CN100437179C

CN100437179C - Optical socket

Info

Publication number: CN100437179C
Application number: CNB2004100428576A
Authority: CN
Inventors: 中泽阳一; 内田真司
Original assignee: JST Mfg Co Ltd
Current assignee: JST Mfg Co Ltd
Priority date: 2003-05-29
Filing date: 2004-05-26
Publication date: 2008-11-26
Anticipated expiration: 2024-05-26
Also published as: KR101051862B1; KR20040103381A; JP2004354672A; TW200510807A; CN1573386A; JP4074835B2

Abstract

The invention provides an optical socket connected with an optical plug, which comprises a box-shaped socket shell with an opening part, a tabular gate which can rotatablely arranged within the socket shell to open and close the opening part, and a torsion coil spring arranged within the socket shell for applying force to the gate in the direction of opening and closing the opening part. When the optical plug is used to squeeze and stop up the gate on the opening part of the socket shell, the gate conquers the action force of the torsion coil spring and turns, enabling the optical plug to insert in the opening part. According to the invention, because the gate and the revolving axle are made into one body, not like the existing state that the gate and the revolving axle are parted parts, the number of parts can be cut to make the installation of the optical plug easy. And then, because the size of the gate can be reduced, the size of the opening part can be reduced, the appearance of the optical plug arranged on the machine in a condition can be improved.

Description

Optical receptacle

Technical field

The present invention relates to the optical receptacle that is connected with optical plug.Be specifically related to, in establish optical element, the insertion of the optical plug by connecting optical fiber, the optical receptacle that optical fiber and optical element are coupled together.

Background technology

In DVD (Digital Versatile Disc), TV, STB (set-top box Set Top Box), CD (Compact Disc), MD digital sound field of machines such as (Mini Disc), in order to prevent to produce noise, popularizing the mode of utilizing optical fiber to transmit.

In these digital sound machines, adopt optical conenctor.This optical conenctor comprises: optical receptacle, be installed on the control panel of above-mentioned machine, and form peristome; And optical plug, be connected with optical fiber, insert above-mentioned peristome.

Above-mentioned optical receptacle, not with state that optical plug is connected under, on the peristome of optical receptacle, be coated with protective cover.Its reason is, and is inner if dust is invaded from the peristome of optical receptacle, can hinder the transmission of the light signal between the optical element of optical plug and optical receptacle inside, can not correctly transmit light signal.

Therefore, in general, the machine for this optical receptacle is installed during product export, all will clog the peristome of optical receptacle, loads onto protective cover.

Yet because protective cover is another parts that separate with this optical receptacle, the user forgets the installation protective cover sometimes, or loses protective cover.

So, in order to address this problem, a kind of optical receptacle having been proposed, its housing is provided with the gate that opens and closes peristome.(for example, opening the 2000-131564 communique) with reference to the spy.Specifically, this optical receptacle comprises gate; The revolving shaft of this gate is installed; With the torsion disc spring that twists on this revolving shaft.

Yet the optical receptacle number of components with above-mentioned gate is many, and the surface area of control panel that this optical receptacle is installed is big.

Summary of the invention

The objective of the invention is to, address the above problem, provide with existing same, at the chimeric peristome of optical receptacle the gate of open and close type is set, structure is simpler, and it is easier to assemble, and can more reduce the optical receptacle of the surface area of control panel.

In order to achieve the above object, the inventor has invented following new optical receptacle.

(1) a kind of optical receptacle is characterized by, and it is the optical receptacle that is connected with optical plug, comprises: jack housing, be roughly box-shaped, and be formed with peristome; Gate, tabular is arranged on above-mentioned jack housing inside rotationally, opens and closes above-mentioned peristome; With the torsion disc spring, be located at above-mentioned jack housing inside, closing on the direction of above-mentioned peristome, give above-mentioned gate reinforcing, when utilizing above-mentioned optical plug extrusion plug to live in to state the above-mentioned gate of peristome of jack housing, above-mentioned gate overcomes the acting force of above-mentioned torsion disc spring and rotates, and above-mentioned optical plug is inserted in the above-mentioned peristome.

This optical plug can be the optics square plug that meets EIAJ's specification (hereinafter referred to as EIAJ) regulation.

In the jack housing of optical receptacle, on the position relative, second peristome is set with peristome.Can utilize the capping that is roughly the L font to cover this second peristome.

In this case, distolateral in capping forms and keeps gate structures.

Above jack housing, capping and gate are made with PPS (polyphenylene sulfide polyphenylenesulfide) or PBT synthetic resin such as (polybutylene terephthalate polybutylene terephthalate).

According to the invention of (1), when utilizing above-mentioned optical plug compaction plug to live in to state the above-mentioned gate of opening of jack housing, above-mentioned gate overcomes the rotation of the acting force of above-mentioned torsion disc spring, and above-mentioned optical plug is inserted in the above-mentioned opening.When utilizing optical plug to push the gate of the peristome that clogs jack housing, gate overcomes the acting force of torsion disc spring and rotates, and optical plug is inserted in the peristome.

On the other hand, when the peristome of optical receptacle was extracted optical plug, the acting force that reverses spiral end made gate return original position, clogs peristome.Like this, can prevent dust intrusion optical receptacle inside.

Because gate and revolving shaft form as one, and are not as existing, gate and revolving shaft are parts separately, therefore can cut down number of parts, and the installation of optical receptacle is easy.Owing to be not, the torsion disc spring is twisted on the revolving shaft again, therefore can reduce the size of gate, thereby reduce the size of peristome, improve the outward appearance of the optical receptacle under the state that is installed on the machine as existing.

(2) in (1) described optical receptacle, relative in the inside of above-mentioned jack housing with above-mentioned peristome, optical element is set.

Also can groove be set,, optical element be installed by optical element being embedded in this groove in the inside of jack housing.Like this, can prevent the offset of optical element.

In addition, optical element can be to be the light-emitting component of light signal output with converting electrical signal, also can be will input converting optical signals be the photo detector of electric signal, also can be the light emitting and receiving component that light-emitting component and photo detector are made of one.

(3) in (1) or (2) described optical receptacle,, form the recess at the axial two ends that keep above-mentioned torsion disc spring in the inside of above-mentioned jack housing.

In capping, form recess, in advance the torsion disc spring is installed in the capping, in this state, also capping can be installed on the jack housing.Like this, optical receptacle can be installed easily.

(4) in (1)～(3) in any described optical receptacle, the central shaft of above-mentioned torsion disc spring is positioned at the inboard than the more close above-mentioned peristome of the centre of gyration of above-mentioned gate.

According to the invention of (4), the central shaft of torsion disc spring is positioned at the inboard than the more close peristome of revolving shaft of gate, therefore compared with the existing, can increase the aperture of gate.Thereby, can further reduce the size of peristome.

(5) in (1)～(4), in any described optical receptacle,, be formed on above-mentioned gate and open under the state of above-mentioned opening, accommodate the receiving space of above-mentioned gate in the inside of above-mentioned jack housing.

According to the invention of (5), owing to be provided with the receiving space that holds gate,, can increase the aperture of gate therefore with existing comparison in the inside of jack housing, thereby, can further reduce the size of peristome.

(6) in (5) described optical receptacle, the handle of an end of above-mentioned torsion disc spring is with above-mentioned gate butt, the handle of the other end of above-mentioned coil spring, with the inner butt of above-mentioned jack housing.

(7) in (1)～(6), in any one described optical receptacle, on above-mentioned jack housing, form outstanding laterally convex surface; Above-mentioned peristome forms by above-mentioned convex surface.

(8) in (7) described optical receptacle, the minor face of above-mentioned convex surface is of a size of 8.2mm.

Description of drawings

Fig. 1 is the optical receptacle of an embodiment of the invention and the exploded perspective view of optical plug.

Fig. 2 is the exploded perspective view of the optical receptacle of above-mentioned embodiment.

Fig. 3 A is the front elevation of the jack housing of above-mentioned embodiment.

Fig. 3 B is the right view of the jack housing of above-mentioned embodiment.

Fig. 3 C is the X-X sectional view of the jack housing of above-mentioned embodiment.

Fig. 3 D is the rear view of the jack housing of above-mentioned embodiment.

Fig. 4 A is the planimetric map of the capping of above-mentioned embodiment.

Fig. 4 B is the front elevation of the capping of above-mentioned embodiment.

Fig. 4 C is the right side view of the capping of above-mentioned embodiment.

Fig. 4 D is the left side view of the capping of above-mentioned embodiment.

Fig. 4 E is the backplan of the capping of above-mentioned embodiment.

Fig. 4 F is the X-X sectional view of Fig. 4 A.

Fig. 5 A is the front elevation of the optical receptacle of above-mentioned embodiment.

Fig. 5 B is the right side view of the optical receptacle of above-mentioned embodiment.

Fig. 5 C is the X-X sectional view of Fig. 5 A.

Fig. 6 is the skeleton view of the optical receptacle of the above-mentioned embodiment seen from the back side.

Fig. 7 A is the side cross-sectional view of the optical plug of above-mentioned embodiment.

Fig. 7 B is the front elevation of the optical plug of above-mentioned embodiment.

Embodiment

Below, embodiments of the present invention are described with reference to the accompanying drawings.

Fig. 1 represents the optical receptacle 100 of present embodiment and the exploded perspective view of optical plug 1.

The tetragonal optical plug 1 of EIAJ regulation is connected with optical receptacle 100.

Optical receptacle 100 comprises: jack housing 2; Be installed in the capping 5 on this jack housing 2; Be arranged on the gate 3 of jack housing 2 inside; Torsion disc spring 4; With optical element 6.

Fig. 2 represents the exploded perspective view of optical receptacle 100.Fig. 3 A is the front elevation of jack housing 2.Fig. 3 B is the right side view of jack housing 2.Fig. 3 C is the X-X sectional view of jack housing 2.Fig. 3 D is the rear view of jack housing 2.

Jack housing 2 is approximately box-shaped, and it comprises: the peristome 20 that inserts optical plug 1; Peristome 25 with chimeric capping 5.

On jack housing 2, form outwards outstanding convex surface 21.Peristome 20 forms by this convex surface 21.This convex surface 21 exposes from the machine that optical receptacle 100 is installed.

In the present embodiment, the minor face size W of convex surface 21 is 8.2mm.Because with respect to existing 9.9～10.0mm, minor face size W shortens, the area that exposes from the machine that optical receptacle 100 is installed is reduced greatly.

Peristome 20 forms the hexagonal configuration corresponding with the teat described later 12 of optical plug 1.That is, in peristome 20, form the hypotenuse 222,223 corresponding with the inclined-plane 122,123 of the teat 12 of optical plug 1.In the following description, with a side that hypotenuse 222,223 is not set as upside, with a side that hypotenuse 222,223 is set as downside.

In addition, on the limit relative, form protuberance 224 with the hypotenuse 222,223 of peristome 20.The groove of the notch described later 32 of gate 3 is entrenched in the protuberance 224, prevents the dust intrusion.

On two sides of the inside of peristome 20, forming a pair cross-section that reaches jack housing 2 inside is arc groove 22A, the 22B of circular arc.

Be formed for installing the mounting groove 20B of optical element 6 in the inside of peristome 20, between this mounting groove 20B and peristome 20, form ring light introduction part 20A.

The mold portion described later 60 of optical element 6 embeds among this mounting groove 20B, inserts light introduction part 20A by the becket described later 13 with optical plug 1, makes optical element 6 consistent with the optical axis of optical fiber 1A.

Shown in Fig. 3 D, on the inside of jack housing 2, form pawl 25A, form a pair of

pawl

25B, 25C below across mounting groove 20B.

Again as shown in Figure 3A, at the upside of the peristome 20 of jack housing 2, be formed for optical receptacle 100 is screwed tight fixed orifice 24 on not shown machine control panel.

At the downside of the peristome 20 of jack housing 2, do three highlightedly and be used to be inserted into and split sliding pin 26 on the not shown printed base plate.

Fig. 4 A is the planimetric map of capping 5.Fig. 4 B is the front elevation of capping 5.Fig. 4 C is the right side view of capping 5.Fig. 4 D is the left side view of capping 5, and Fig. 4 E is the bottom view of capping 5, and Fig. 4 F is the X-X sectional view of Fig. 4 A.

Fig. 5 A is the front elevation of optical receptacle.Fig. 5 B is the right side view of optical receptacle 100.Fig. 5 C is the X-X sectional view of Fig. 5 A.

Capping 5 is roughly the L font, clogs peristome 25.Peristome 25 is across with the opposite face of 20 formed of peristomes with towards the extended surface of peristome 20 and form.Therefore, capping 5 is by vertical the establish sheet 52 relative with peristome 20; Hanging down with this haply, to establish sheet 52 vertical, and the sheet 51 that is horizontally set with that extends towards peristome 20 constitutes.

Wherein, the inboard recess 50 that forms on the top that is horizontally set with sheet 51.On the inside surface of recess 50, form a pair of

relative projection

5C, 5D mutually.In recess 50, become the space of placing torsion disc spring 4 than the more close front of a pair of

projection

5C, 5D; This becomes the space of the gate 3 of placing open mode to the base end side of

projection

5C, 5D.

In addition, at the front end that is horizontally set with sheet 51,, be provided with a pair of extension 5A, the 5B that extend towards peristome 20 in the both sides of recess 50.

Shown in Fig. 5 C, by capping 5 is embedded jack housing 2,, and between a pair of extension 5A, the 5B of capping, form revolving shaft accepting groove 22C, the 22D of the aftermentioned revolving shaft 3A, the 3B that hold gate 3 at the inner face of the peristome 20 of jack housing 2.

In addition, in the outside that is horizontally set with sheet 51, forming the cross section highlightedly is leg-of-mutton stop pin 55A.Establish on two sides of sheet 52 vertical, forming outstanding round about cross section is leg-of-

mutton stop pin

55B, 55C.

As shown in Figure 6, these stop pin 55A～55C embeds among the pawl 25A～25C of jack housing 2, and capping 5 is fixed on the jack housing 2.In addition, tool using enlarges the gap between capping 5 and the jack housing 2, can remove the chimeric of pawl 25A～25C and stop pin 55A～55C, and capping 5 is taken out from jack housing 2.

In the inboard of hanging down and establishing sheet 52, form the protuberance 54 that extends along its length.As shown in Figure 5, by capping 5 is embedded in the jack housing 2, the mold portion described later 60 of optical element 6 can be clamped in the protuberance 54 of capping 5, between the mounting groove 20B of jack housing 2 and the light introduction part 20A.

Getting back to Fig. 2 can find out, optical element 6 is to be the light-emitting component (light emitting diode) of light signal output with converting electrical signal.This optical element 6 has the mold portion 60 that is roughly rectangle; With from these mold portion 60 extended three reeds.They are with respect to peristome 20 configurations.This optical element 6 is clamped in capping 5 vertical establishing between sheet 52 and the jack housing 2.In addition, optical element 6 also can be that the converting optical signals that will import is the photo detector (photistor) of electric signal, also can be the light emitting and receiving component that light-emitting component and photo detector are made of one.

Gate 3 comprises: dull and stereotyped hexagonal lock portion 33; With outward extending revolving

shaft

3A, 3B from the two ends of this lock portion 33.The thickness of slab of the lock portion 33 of gate 3, roughly the same with the external diameter of revolving

shaft

3A, 3B.

By using gate 3 with revolving

shaft

3A, 3B is that the centre of gyration rotates, and can open and close peristome 20.

The lock portion 33 of gate 3 is corresponding with peristome 20, forms sexangle.Form the groove 31 of the ratchet 12C of engaging aftermentioned optical plug 1 on the surface of lock portion 33.

In addition, on the lock portion 33 of gate 3, form thin plate flange 33A, the 33B that engages with the hypotenuse 222,223 of peristome 20.Even gate 3 rotates, when from the inboard peristome 20 being clogged,

thin plate flange

33A, 33B and hypotenuse 222,223 butts can limit the rotation of gate 3, and therefore, gate 3 can not fly out laterally from peristome 20.

Between revolving shaft 3A, the 3B of gate 3, form the groove of the notch 32.This groove of the notch 32 is that the minor face size W for the convex surface 21 that reduces to form peristome 20 as far as possible is provided with.

Revolving shaft 3A, the 3B of gate 3 is clipped between the inside surface of a pair of extension 5A, the 5B of capping 5 and jack housing 2, keeps free to rotately.

Torsion disc spring 4 gives gate 3 reinforcings on the direction of cutting out peristome 20.The coil 41 that makes torsion disc spring 4 embeds in the placement space 50 of torsion disc spring under compressive state.Thereby make torsion disc spring 4 remain on the inside of jack housing 2.

In addition, take in torsion disc spring 4, its central shaft is positioned at than the centre of gyration of gate 3 more near the inboard of peristome 20.Therefore, can guarantee open angle greatly with respect to the peristome 20 of gate 3.

The handle 42 of one end of torsion disc spring 4 and the back side butt of gate 3; The handle 43 of the other end and the inside butt of jack housing 2.

Fig. 7 A is the side cross-sectional view of optical plug 1, and Fig. 7 B is the front elevation of optical plug 1.

Optical plug 1 comprises: the cable bearing sleeve 11 that is connected with optical fiber 1A; With the front end that is located at this cable bearing sleeve 11, insert the teat 12 of peristome 20 inside.

Cable bearing sleeve 11 is a square, keeps the cardinal extremity of teat 12.Control this cable bearing sleeve 11, optical plug 1 can be installed in the optical receptacle 100.

Teat 12 comprises: the teat body of hexagonal barrel shape; The columnar becket 13 that highlights from the front end of this body; Optical fiber 1A with the inside that remains on teat body and becket 13.

The teat body passes through the angle chamfering with the mutual vicinity of quadrangle tube, forms inclined-plane 122,123.In the following description, with a side that inclined-plane 122,123 is not set as above, illustrate as following with the side that inclined-plane 122,123 is set.

On the front end face of teat body, form recess 14 around becket 13.

The front end chamfering of becket 13 forms fillet surface 131.By this fillet surface 131, just insert easily among the light introduction part 20A.

On the two sides of teat 12, form a pair of circular-arc

circular arc projection

12A, 12B in the opposite direction.The shape of this

circular arc projection

12A, 12B is corresponding with arc groove 22A, the 22B of jack housing 2.

In addition, on the surface that

circular arc projection

12A, 12B are not set in teat 12, round about, form a pair of ratchet 12C, 12D.The ratchet 12C of upside is corresponding with the groove 31 that forms on the surface of gate 3.The ratchet 12D of downside is corresponding with the groove 23 of the rectangle that forms on jack housing 2.

Below, the action that optical plug 1 is plugged above-mentioned optical receptacle 100 is described.

Utilize teat 12 extruding of optical plug 1 to clog the gate 3 of the peristome 20 of jack housing 2.Like this, gate 3 will overcome the acting force of torsion disc spring 4 and rotate.If teat 12 former states of optical plug 1 ground is inserted the peristome 20 of jack housing 2, circular arc projection 12A, the 12B of teat 12 just guided by arc groove 22A, the 22B of jack housing 2.Make the becket 13 of optical plug 1 insert light introduction part 20A thus.So, can make the optical axis of optical fiber 1A consistent reliably with the optical axis of optical element 6.

Simultaneously, shown in the double dot dash line among Fig. 5 C, gate 3 rotates, and is incorporated in the recess 50.Like this, the recess 31 that forms on the surface of the ratchet 12C of the upside of optical plug 1 and gate 3 engages.Also have, the ratchet 12D of downside then engages with the groove 23 of the rectangle that forms on jack housing 2.Like this, can make the depth direction location of teat 12 at peristome 20.

On the other hand, when optical plug 1 is extracted, utilize the acting force of torsion disc spring 4 from the peristome 20 of optical receptacle 100, make gate 3 return back to the origin-location, clog peristome 20.Like this, can prevent the inside of dust intrusion optical receptacle 100.

Adopt the present invention that following effect is arranged.

Because gate and gyroaxis form as one, and are not as existing, gate and revolution Axle is parts separately, therefore can cut down number of parts, makes the installation of optical receptacle become easy. Further, owing to be not as existing, the torsion disc spring is twisted on the gyroaxis, therefore can To reduce the size of gate, reduce the size of peristome. Thus, can improve and be installed in machine State under the outward appearance of optical receptacle.

Claims

1. an optical receptacle is characterized by,

It is the optical receptacle that is connected with optical plug, comprises:

Jack housing is roughly box-shaped, is formed with peristome;

Gate, tabular is formed with a pair of revolving shaft that extends towards its outside, is that the centre of gyration is arranged on described jack housing inside rotationally with described a pair of revolving shaft, opens and closes described peristome; With

The torsion disc spring is located at described jack housing inside, is closing on the direction of above-mentioned peristome, gives described gate reinforcing,

When utilizing described optical plug extrusion plug residence to state the described gate of peristome of jack housing, described gate overcomes the acting force of described torsion disc spring and rotates, and described optical plug is inserted in the described peristome.

2. according to the optical receptacle described in the claim 1, it is characterized by,

In the inside of described jack housing, relative with described peristome, optical element is set.

3. according to the optical receptacle described in claim 1 or 2, it is characterized by,

In the inside of described jack housing, form the recess at the axial two ends that keep described torsion disc spring.

4. optical receptacle according to claim 1 and 2 is characterized by,

The central shaft of described torsion disc spring is positioned at the inboard than the more close described peristome of the centre of gyration of described gate.

5. optical receptacle according to claim 1 and 2 is characterized by,

In the inside of described jack housing, be formed on described gate and open under the state of described peristome, accommodate the receiving space of described gate.

6. according to the optical receptacle described in the claim 5, it is characterized by,

The handle of one end of described torsion disc spring is with described gate butt, the handle of the other end of described torsion disc spring, with the inner butt of described jack housing.

7. according to any one described optical receptacle in the claim 1,2,6, it is characterized by, on described jack housing, form outstanding laterally convex surface;

Described peristome forms by described convex surface.

8. according to the optical receptacle described in the claim 7, it is characterized by,

The minor face of described convex surface is of a size of 8.2mm.