WO2008067726A1

WO2008067726A1 - A plug terminal

Info

Publication number: WO2008067726A1
Application number: PCT/CN2007/003437
Authority: WO
Inventors: Shihuang Li
Original assignee: Shihuang Li
Priority date: 2006-12-04
Filing date: 2007-12-04
Publication date: 2008-06-12

Abstract

A plug terminal comprises a terminal body (1) and a copper cover (2) or a copper head (5). The terminal body is an iron rod, one end of which is a thick end (11)and the other end of which is a thin end (12). A step is formed between the thick end (11) and the thin end (12). The outer surface of the rod is covered by a weldable covering. The copper cover (2) or the copper head (5) is a cover or a copper head cover which is made from Cu and has an unidirectional opening. The outer surface of the cover is covered by a nickel covering. The fixation of the copper cover (2) and the terminal body (1) is achieved by making the opening end of the copper cover (2) locked on the step of the wide end (11) of the terminal body (1) from a hem by means of rolling-sealing. Or the fixation of the copper head (5) and the terminal body (1) is achieved by welding, riveting, or screwing etc.

Description

Plug terminal

The present invention relates to a power plug, and more particularly to a plug terminal that conforms to European standards. Background technique

The power plug is a common electrical component in people's daily life. In the existing large and small electrical appliances or electrical equipment, there are plugs of applicable specifications. Each power plug may have different specifications, but its structure is basically the same. It includes a body and a plug terminal, the plug terminal is used to conduct current, and the base is used to fix the plug terminal. A GS plug of the prior art has a plug terminal formed of a solid copper strip body. As shown in FIG. 1, the plug terminal includes a contact portion 11' and a rod portion 12', and the contact portion 11' is used for The plug-in conductive device is in contact with the electric conductor, and the rod portion 12' is used for connecting the wires. In order to ensure the reliability of the contact, the contact portion 1 is usually made larger, since the plug terminal is integrally made of copper material. Therefore, more copper material is needed, and the terminal is usually made of a vehicle, which is too costly in equipment investment, resulting in a high cost of the plug, thereby affecting the competitiveness of the product.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a plug terminal. Under the effect of ensuring the use of the plug terminal, the use amount of the copper material can be saved to a large extent, so as to reduce the production cost and enhance the competitiveness of the product. purpose.

The technical solution adopted by the present invention to solve the technical problem thereof is as follows: A plug terminal, comprising: a terminal body, a rod body made of iron material, one end of the rod body is set as a thick end, and the other end is set as a thin end, which is thick The end to the thin end is stepped, and the outer surface of the rod is coated with a weldable coating; a copper sleeve is a sleeve body made of copper material with a one-way opening, and the outer surface of the sleeve is covered with Nickel plating

The thick end of the terminal body is sleeved in the copper sleeve and fixed to the copper sleeve.

Between the copper sleeve and the thick end of the terminal body, the open end of the copper sleeve is folded along the step of the thick end of the terminal body by rolling and closing.

The inner sleeve of the copper sleeve and the outer wall of the thick end of the terminal body are also welded to each other between the copper sleeve and the thick end of the terminal body to enhance the good electrical conductivity of the terminal.

The inner end of the step end of the terminal body is further provided with an iron ring, and the iron ring and the thick end of the terminal body are The sleeve is folded into the opening of the copper sleeve, and the open end of the copper sleeve is folded at one end of the iron ring by adopting a rolling and closing manner, and the other end of the iron ring abuts against the inner side of the step of the thick end of the terminal body.

The copper sleeve is coupled with the thick end of the terminal body and the iron ring by welding to connect the inner wall of the copper sleeve with the thick end of the terminal body and the outer wall of the iron ring to enhance the good electrical conductivity of the terminal.

The solderable plating layer is a tin plating layer.

A method for manufacturing a plug terminal as described above, comprising the steps of:

a. The iron rod is processed by a taro process and a twisting process, so that the iron rod forms a terminal body having a head feature, a tail feature, and a middle step or a thread mark;

b. plating the terminal body to coat the outer surface of the iron terminal body with a solderable coating; c insert the processed iron ring into the head of the iron terminal body or the rod adjacent to the head; d Inserting the processed copper sleeve into the head end of the iron terminal body, so that the copper sleeve completely covers the head of the iron terminal body and the iron ring;

A plug terminal includes:

A terminal body is a rod body made of iron material. One end of the rod body is set to a thick end, and the other end is set as a thin end, and a step is transitioned from a thick end to a thin end, and a weldability is coated on the outer surface of the rod body. a copper head, a copper head cover body made of a copper material having a one-way opening, the outer surface of the copper head cover body being coated with a nickel plating layer;

The end of the thick end of the terminal body is mounted in the copper head and fixed to the copper head.

The end of the thick end of the terminal body and the copper head are fixed by welding.

The end of the thick end of the terminal body and the copper head are fixed by riveting.

The end of the thick end of the terminal body is fixed to the copper head by a screw connection.

The solderable plating layer is a tin plating layer.

The plug terminal of the invention is a structural improvement of the GS plug terminal of the prior art, and the rod body made of the iron material of the terminal body can reduce the material cost of the product on the basis of ensuring the conductivity, because the copper material is more than Iron materials are expensive. Of course, it is not necessarily necessary to use an iron material as the terminal body, and it is also possible to use other electrically conductive metal materials which are cheaper than copper materials as the terminal body, and the purpose is also to save material costs and reduce production costs. The matching between the copper sleeve or the copper head and the terminal body of the non-copper material can ensure good electrical conductivity when the plug terminal is in contact with the conductive device. The plug terminal of the present invention is composed of a terminal body and a copper sleeve or a copper head, and the terminal body and the copper sleeve are connected by rolling and closing, so that the copper sleeve does not fall out from the terminal body, and after rolling and closing Between the terminal body and the copper sleeve, soldering can be added to obtain better electrical conductivity. Of course, the purpose of conducting electricity can be achieved without soldering; soldering or riveting or screwing can be used between the terminal body and the copper head. Achieve a fixed relationship between the two. The outer surface of the copper sleeve or the copper head is plated with a layer of nickel, which is to ensure the good electrical conductivity of the outer surface of the copper sleeve or the copper head as a contact conductive device, and also protects the copper. Prevents copper from being oxidized and corroded; the outer surface of the terminal body is coated with a solderable coating. The purpose of the plating is to facilitate the soldering between the plug terminal (slim end) and the wire, making the wire easier. Ground soldering on the terminals, the plating is usually tin-plated, so that the terminal body is much easier and more reliable when soldering copper wires through tin, and if there is no tin plating, the copper wires are soldered. Direct soldering to irons is difficult and the connection is not strong. Of course, the solderable coating is also preferably a tin plating.

The invention has the beneficial effects that the plug terminal is formed by using a terminal body and a copper sleeve or a copper head, and the terminal body is made of iron material or other non-copper conductive metal material, the copper sleeve or the copper head A sleeve or copper sleeve body made of a unidirectional opening made of a copper material, coated with a weldable coating on the outer surface of the iron body, and coated with a nickel coating on the outer surface of the copper sleeve or the copper head The end of the thick end or the thick end of the terminal body is installed in the copper sleeve or the copper head and is fixed with the copper sleeve or the copper head, so that the plug terminal of the invention is compared with the original GS plug terminal, and the plug terminal is ensured. Under the effect of use, the use amount of copper material can be saved to a large extent, the purpose of reducing the production cost and enhancing the competitiveness of the product can be achieved; and the soldering layer is completely coated on the outside of the terminal body, so that the wire is made The connection with the plug terminal is easier and more reliable; since the solder joint can be added between the copper sleeve and the terminal body, the conductive performance of the plug terminal is more favorable and reliable.

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, a plug terminal of the present invention is not limited to the embodiment.

1 is a schematic structural view of a prior art GS plug terminal;

Figure 2 is a schematic view showing the structure of the first embodiment of the present invention;

3 is a schematic structural view of the second embodiment of the present invention;

Figure 4 is a schematic view showing the structure of the third embodiment of the present invention; Figure 5 is a schematic view showing the structure of the fourth embodiment of the present invention;

detailed description

Embodiment 1, as shown in FIG. 2, a plug terminal of the present invention includes:

A terminal body 1 is a round rod body made of iron material. One end of the rod body is set to a thick end 11 and the other end is set as a thin end 12, and a transition from a thick end 11 to a thin end 12 is stepped, and the outer surface of the rod body is wrapped. Covering a solderable plating layer (not shown), the solderable plating layer is a tin plating layer;

a copper sleeve 2, a circular sleeve body made of a copper material and having a one-way opening, the outer surface of the sleeve body is coated with a nickel plating layer (not shown);

The thick end 11 of the terminal body is sleeved in the copper sleeve 2 and fixed to the copper sleeve 2.

Wherein, the copper sleeve 2 and the thick end 11 of the terminal body are rolled and closed so that the open end of the copper sleeve is folded at 21 at the step 13 of the thick end 11 of the terminal body.

In order to enhance the good conductivity of the terminal, the copper sleeve 2 and the thick end 11 of the terminal body may be connected by welding. Of course, welding is not necessary, and welding may not be performed. The soldering is done by heating. When the terminal body is tinned, tin is also plated on the thick end 11 of the terminal body. Thus, the tin layer can be connected to the copper sleeve 2 by using the tin layer, and the tin powder can also be used. It is placed in the gap between the thick end 11 of the terminal body and the inner wall of the copper sleeve 2, and when heated, the tin powder welds the thick end 11 of the terminal body and the copper sleeve 2 together.

The plug terminal of the present invention is a structural improvement of the prior art GS plug terminal, and the terminal body 1 is made of a ferrite material, which can reduce the material cost of the product on the basis of ensuring conductivity, because the copper material It is more expensive than iron. Of course, it is not necessary to use iron materials as the terminal body, and other conductive metal materials which are cheaper than copper materials can be used as the terminal body, in order to save material costs and reduce production costs. The cooperation between the copper sleeve 2 and the terminal body 1 ensures good electrical conductivity when the plug terminal is in contact with the conductive device.

The plug terminal of the present invention is composed of the terminal body 1 and the copper sleeve 2, and the terminal body 1 and the copper sleeve 2 are connected by rolling and closing, so that the copper sleeve 2 does not fall out from the terminal body 1, and is rolled. After the crimping port is closed, the welding between the terminal body 1 and the copper sleeve 2 can also be performed, thereby obtaining better electrical conductivity, and of course, the purpose of conducting electricity can be achieved without soldering. The outer surface of the copper sleeve 2 is plated with a layer of nickel, which is to ensure the good electrical conductivity of the outer surface of the copper sleeve 2 as a contact conductive device, and also protects copper from copper oxidation. Corroded; the outer surface of the terminal body 1 is covered with a solderable coating, that is, a tin plating layer, and the function of the tin plating layer is to facilitate the realization of the plug terminal 1 (thin end) and the wire The welding between the wires enables the wire to be soldered to the terminal 1 relatively easily, so that the terminal body 1 is much easier and more reliable when soldering the copper wire by tin, and if there is no tin plating, copper is required. It is difficult to solder the wire directly to the iron rod by soldering, and the connection is not strong. Of course, the plating layer can also be other solderable coating.

In the production, the turning process can also be selected: the terminal body 1 and the copper sleeve 2 are separately manufactured. The terminal body 1 is made of iron material to correspond to the style of the GS plug terminal, and is actually turned by turning. Of course, the terminal body 1 When the copper sleeve 2 is matched, the shape and size of the copper sleeve 2 can be the same as that of the standard GS plug terminal, and the terminal body 1 is made of an iron cylinder to form a corresponding rod body. The copper sleeve 2 is made of a copper material and has a one-way opening. The closed end of the copper sleeve 2 is generally formed in a spherical shape to facilitate insertion into the socket. After the terminal body 1 is the iron member and the copper sleeve 2 are respectively fabricated, the terminal body 1 and the copper sleeve 2 are to be plated, and the terminal body 1 is plated with a solderable layer, that is, a tin plating layer, and the copper sleeve 2 is Plated with a layer of nickel plating. Finally, the terminal body 1 and the copper sleeve 2 are put together, and the thick end 11 of the terminal body is inserted into the copper sleeve 2, and the two are connected by rolling and closing, that is, the open end of the copper sleeve is folded along the 21st. At the step 13 of the thick end 11 of the terminal body, the copper sleeve 2 is not separated from the terminal body 1. In addition, the way of soldering can be increased to increase its electrical conductivity. After the above production, a standard GS plug terminal is formed, which can be mated with the base body to form a plug.

Embodiment 2 Referring to FIG. 3, a plug terminal of the present invention includes:

a terminal body 1 made of a ferrous material, one end of the terminal body 1 is provided with a head portion 11 made by a boring process, and the other end of the terminal body is provided with a connecting portion 13 made of a twisting process, the terminal The middle portion of the main body is a rod body 12 made of a silk reeling process, and the rod body 12 includes a step 121 for facilitating fixing with the injection molded plug body body, and may also be a thread mark, and the outer surface of the terminal main body 1 is covered with a Welded coating (not shown);

a copper sleeve 2 made of a copper material, which is a sleeve having a one-way opening;

An iron ring 3, which is a closed ring;

The copper sleeve 2 is sleeved into the head portion 11 of the terminal body 1 as a contact portion of the plug terminal, and the iron ring 3 is lined between the copper sleeve 2 and the rod body adjacent to the head of the terminal body, and the open end of the copper sleeve 2 is The upper end edge of the iron ring 3 is folded inward along 21, and the lower end edge of the shovel 3 is placed at the step 111 where the head 11 and the rod body 12 intersect. The iron ring 3 is a closed annular structure, and may of course be an unclosed annular structure. If necessary, the lower end of the iron ring may be fixed with the head of the rod body by riveting or welding; the open end of the copper sleeve 2 is rolled along the 21 The crimping port is folded over the upper end of the iron ring 3; the solderable coating is a tin-plated layer; and the inner wall and the terminal of the copper sleeve can be welded by the welding between the copper sleeve and the head of the terminal body and the iron ring. The head of the body and the outer wall of the iron ring are coupled to enhance the good electrical conductivity of the terminal.

The method for manufacturing the plug terminal as described above includes the following steps:

Step a. The iron rod is processed by a steaming process and a twisting process, so that the iron rod is formed with a terminal body 1 having a head feature 11, a tail feature 13 and a middle step 121;

Step b. plating the terminal body 1 so that the outer surface of the iron terminal body 1 is coated with a tin plating layer;

Step c. Insert the processed iron ring 3 into the rod body 12 adjacent to the head of the iron terminal body 1, so that the lower end of the iron ring 3 abuts against the step 111 where the head 11 and the rod body 12 intersect;

Step d. Insert the processed copper sleeve 2 into the head end of the iron terminal body 1, so that the copper sleeve 2 is completely covered on the head 11 and the iron ring 3 of the iron terminal body;

Step e. The open end of the copper sleeve 2 is folded inwardly at 21 on the upper end edge of the iron ring 3 by rolling and closing.

Step c may further include riveting or welding the lower end of the iron ring to the head of the iron terminal body as needed; step d may further include: before the copper sleeve is inserted into the iron terminal body or after the iron terminal body is inserted, The solder paste is extruded into the copper sleeve, and after the step e, the inner wall of the copper sleeve is fixed to the head of the iron terminal body and the outer wall of the iron ring by welding.

In the plug terminal of the present invention, the terminal body 1 is made of a ferrous material, and the material cost of the product can be reduced on the basis of ensuring conductivity, because the copper material is more expensive than the iron material. Of course, it is not necessary to use ferrous materials as the terminal body. It is also possible to use other conductive metal materials that are cheaper than copper materials to replace the ferrous materials as terminal bodies. The purpose is to save materials. Cost, reduce production costs. The cooperation between the copper sleeve 2 and the terminal body of the non-copper material can be To ensure good electrical conductivity when the plug terminal is in contact with the conductive device.

In the method for manufacturing the plug terminal of the present invention, the terminal body 1 is manufactured by using a screw processing process, the head portion 11 is formed by a boring process, and the other portion is processed by a boring process, including the terminal portion 13 at the end. And the central body 12 and the step 121 on the rod body which are convenient for fixing with the injection molded plug body body, so that it is not necessary to have a high price equipment when the vehicle is processed, the manufacturing process is simple and easy, and the production equipment is low, ij is made. This is low.

In the plug terminal of the present invention and the manufacturing method thereof, the plug terminal is composed of the terminal body 1 and the copper sleeve 2, and the terminal body 1 and the copper sleeve 2 are usually connected by rolling and closing, so that the copper sleeve 2 does not pass from the terminal body 1. The upper part is dropped out, and after the rolling and closing, the welding step can be added between the terminal body 1 and the copper sleeve 2, thereby obtaining better electrical conductivity, and of course, the purpose of conducting the electricity can be achieved without the connection; The outer surface may also be plated with a layer of nickel, which ensures that the outer surface of the copper sleeve 2 has good electrical conductivity as required to contact the conductive device, and also protects the copper from corrosion by corrosion of the copper; Since the head 11 of the terminal body 1 is made by the boring process, it is also necessary to add an iron ring 3 at the head of the terminal body 1 to cooperate with the copper sleeve 2 as a contact portion of the plug terminal, iron. The ring 3 may be a closed annular structure directly cast, or may be formed by using an iron ring to form a ring shape. When the iron piece ring is formed into a ring shape, the two ends of the iron piece may be fixed to each other. Ring is closed annular structure, but also allows the two ends of the iron is not coupled (i.e. leaving a slit) so that the hoop is not a closed annular structure.

In the production, the terminal body 1 and the copper sleeve 2 are separately manufactured. The terminal body 1 is made of a ferrous material (ie, an iron member) by a boring process or a twisting process, and the iron terminal body 1 is plated with a tin layer. The copper sleeve 2 may also be plated with a nickel layer, the iron terminal body 1 must be plated, and the copper sleeve 2 does not necessarily need to be plated; the closed end of the copper sleeve 2 is generally spherical in shape to facilitate insertion into the socket. Since the head 11 of the terminal body 1 adopts a boring process, the iron ring 3 is also fitted with the iron ring 3, and the iron ring 3 is placed in the terminal body 1. If necessary, the iron ring and the terminal body can be fixed by riveting or welding. Finally, the rolling end of the copper sleeve 2 is folded over the end of the iron ring 3 by 21 turns, so that the iron ring 3 does not detach from the copper sleeve 2, and the copper sleeve 2 does not come out of the terminal. The main body 1 realizes the phase fixing between the copper sleeve 2 and the terminal body 1, and is necessary At the same time, the welding can be increased to fix the copper sleeve to the terminal body to increase its electrical conductivity. Embodiment 3 Referring to FIG. 4, a plug terminal of the present invention includes:

a terminal body 1 made of a ferrous material, one end of the terminal body 1 is provided with a head portion 14 made by a boring process, and the other end of the terminal body is provided with a connecting portion 13 made of a twisting process, the terminal The middle portion of the main body is a rod body 12 made of a silk reeling process, and the rod body 12 includes a step 121 for facilitating fixing with the injection molded plug body body, and may also be a thread mark, and the outer surface of the terminal main body 1 is covered with a Welded coating (not shown);

An iron ring 3, which is a closed ring;

The copper sleeve 2 is sleeved into the head portion 14 of the terminal body 1 as a contact portion of the plug terminal, and the iron ring 3 is lined between the copper sleeve 2 and the rod body adjacent to the head of the terminal body, and the open end of the copper sleeve 2 is The upper end edge of the iron ring 3 is folded inward along 21, and the lower end edge of the iron ring 3 is placed at the step 112 where the head 14 and the rod body 12 intersect.

The difference from the second embodiment is that the head portion 14 of the terminal body 1 is small, and the step 112 at which the head portion 14 and the rod body 12 intersect is a stepped step. Therefore, the iron ring 3 is required to have a larger size and a size. The bottom end of the iron ring 3 is riveted to the head 14.

Embodiment 4 Referring to FIG. 5, a plug terminal of the present invention includes:

A terminal body 4 is a round rod body made of iron material. One end of the rod body is a thick end 41, and the other end is a thin end 42. The thick end to the thin end are stepped, and the outer surface of the rod body is covered with a a solderable plating layer (not shown), the solderable plating layer being a tin plating layer;

a copper head 5, a copper head cover body made of a copper material and having a one-way opening, the outer surface of the copper head cover body being covered with a nickel plating layer (not shown);

The end of the thick end 41 of the terminal body is housed in the copper head 5 and fixed to the copper head.

Wherein, the end of the thick end 41 of the terminal body and the copper head 5 are fixed by a threaded connection, so that the end of the thick end 41 of the terminal body is provided with an external thread 43 in the inner cavity of the copper head 5. The internal thread 51 is provided, and the copper head 5 is coupled to the terminal body 4 by the engagement of the internal thread 51 and the external thread 43 of the terminal body. Of course, the end of the thick end of the terminal body and the copper head can also be fixed by welding. Or the riveting phase is fixed.

The above embodiments are only used to further illustrate the plug terminal of the present invention, but the present invention is not limited to the embodiment, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present invention are all included in the present invention. Within the scope of protection of the technical solutions of the present invention.

Industrial applicability

The plug terminal of the invention comprises a terminal body and a copper sleeve or a copper head; the terminal body is a rod body made of iron material, one end of the rod body is set as a thick end, and the other end is set as a thin end, and a step is transitioned from a thick end to a thin end. The outer surface of the rod body is coated with a weldable coating layer; the copper sleeve or the copper head is made of a copper material and has a one-way opening sleeve or a copper sleeve body, and the outer surface of the sleeve body is coated with a nickel plating layer; After adopting the structure, under the effect of ensuring the use of the plug terminal, the use amount of the copper material can be largely saved, the production cost is reduced, the competitiveness of the product is enhanced, and the industrial applicability is good.

Claims

& WoJ

A plug terminal, comprising: a terminal body, a rod body made of iron material, one end of the rod body is set to a thick end, and the other end is set to a thin end, and a step is transitioned from a thick end to a thin end The outer surface of the rod body is coated with a weldable coating layer; a copper sleeve is a sleeve body made of a copper material and having a one-way opening, and the outer surface of the sleeve body is coated with a nickel plating layer;

2 . The plug terminal according to claim 1 , wherein: the copper sleeve and the thick end of the terminal body are rolled and closed, so that the open end of the copper sleeve is folded over the thick end of the terminal body. At the steps.

3. The plug terminal according to claim 2, wherein: the copper sleeve and the thick end of the terminal body are further connected to the outer wall of the thick end of the terminal body by welding. .

4. The plug terminal according to claim 1, wherein: the inner end of the step end of the terminal body is further provided with an iron ring, and the iron ring is sleeved with the thick end of the terminal body in the opening of the copper sleeve. The open end of the copper sleeve is folded over at one end of the iron ring by means of rolling and closing, and the other end of the iron ring abuts against the inner side of the step of the thick end of the terminal body.

The plug terminal according to claim 4, wherein: the copper sleeve and the thick end of the terminal body and the iron ring are welded together to make the inner wall of the copper sleeve and the thick end of the terminal body And the outer wall of the iron ring is connected.

6. A plug terminal according to claim 1, wherein: said solderable plating layer is a tin plating layer.

The plug terminal according to claim 1, wherein: the method for manufacturing the plug terminal comprises the following steps:

a. The iron rod is processed by a steaming process and a twisting process, so that the iron rod forms a terminal body having a head feature, a tail feature, and a middle step or a thread mark;

b. plating the terminal body to cover the outer surface of the iron terminal body with a tin plating layer; c insert the processed iron ring into the head of the iron terminal body or the rod adjacent to the head; d. The processed copper sleeve is inserted into the head end of the iron terminal body, so that the copper sleeve is completely covered with iron The head of the terminal body and the iron ring;

e. The open end of the copper sleeve is folded inwardly on the upper end edge of the iron ring by rolling and closing.

8. A plug terminal, comprising:

9. A plug terminal according to claim 8, wherein: the end of the thick end of the terminal body is fixed to the copper head by soldering or riveting.

10. A plug terminal according to claim 8, wherein: the end of the thick end of the terminal body is fixed to the copper head by a threaded connection.

11. The terminal as claimed in one type of plug according to claim 8, wherein: said tin plating solderable layer wound ₀

12. A plug terminal according to claim 8, wherein: the method of fabricating the plug terminal comprises the steps of:

a. The iron rod is processed by a taro process and a twisting process to form an iron terminal body having a head feature, a tail feature, and a middle step or a thread mark;

b. Coating the iron terminal body with a tin plating layer on the outer surface of the iron terminal body; c Insert or screw the processed copper head into the head end of the iron terminal body to make the copper head completely Covering the head of the iron terminal body;

d. The copper head is fixed to the iron terminal body by welding, riveting or screwing.