JPH11109189A - Optical jack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the axis aligning precision between a plug and an optical element in an optical jack, and minimize the space between the plug and the optical element to improve the transmission characteristic of optical signal. SOLUTION: An optical element 20 is provided on a body 10 for inserting a plug 70 so as to be situated on the tip side of the plug 70. A conical recessed surface 24 with which the tapered tip part of the plug 7 makes contact is formed on the front surface of the optical element 20. A plug holding means 30 to be engaged with the constricted part 72 of the plug 70 is provided on the body 10, and the tip part of the plug 70 is pressed to the conical recessed surface 24 by this engagement. The plug 70 is thus directly axis-aligned to the optical element 20 without through the body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical jack capable of transmitting an optical signal.

[0002]

2. Description of the Related Art With the recent rapid spread of MDs, the number of opportunities for dubbing and editing music from a CD to an MD has been increasing. In this case, it is necessary to optically and electrically connect the CD and the MD, and a rectangular optical connector is used for the connection of the audio equipment. However, the optical connector has a large shape and is not suitable for portable use. For this reason, a combination of an optical fiber cord with a mini-plug and an optical jack into which the mini-plug is inserted is used for connecting a portable device.

A small optical jack used for a portable CD, MD, or the like is an optical element for receiving or emitting light in a body into which a mini-plug is inserted in order to enable shared transmission of an optical signal and an electric signal. And a contact member for transmitting and receiving electric signals (for example, Japanese Utility Model Laid-Open No. 62-193208 and Japanese Patent Laid-Open No. 4-2839).
No. 73, etc.). Then, by inserting the mini-plug into the body, the tip of the optical fiber exposed at the tip of the mini-plug faces the optical element in the body, and the mini-plug mechanically contacts the contact member in the body. Contact, which allows shared transmission of optical and electrical signals.

[0004]

However, such a conventional optical jack has the following problems.

In a conventional optical jack, a plug inserted into a body is aligned by restraining the body. In addition, the optical element is axially aligned with the body by fitting into an empty space formed in the body. For this reason, due to the dimensional tolerance of the body, the plug inserted into the body causes an axis shift with respect to the body, and the optical element fitted to the body also causes the axis shift with respect to the body. As a result, since the two axes are overlapped, the alignment accuracy between the plug and the optical element is considerably reduced.

[0006] The tip of the plug inserted into the body faces the optical element in the body at a distance. Here, if the distance from the tip of the plug to the light receiving / emitting surface of the optical element is long, the received light power becomes small, and the characteristics of the transmission signal deteriorate. In the conventional optical jack, there is a gap between the plug and the optical element, and there is a gap corresponding to the thickness of the package from the front surface of the package to the light receiving / emitting surface.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an optical jack capable of improving the alignment accuracy between a plug and an optical element and suppressing the deterioration of a transmission signal during this time. And

[0008]

In order to achieve the above object, an optical jack according to the present invention comprises a body in which a plug is inserted, and an optical jack which is located at the tip end of the plug inserted in the body. A light-receiving or light-emitting optical element in which a conical concave surface for axial alignment with which the front end of the plug is housed and the front end of which is opposed to the plug is formed in the body. Plug holding means is provided in the plug so as to be engaged with the cracked portion of the inserted plug, and presses the tip of the plug against the concave surface by the engagement.

According to this structure, the plug inserted into the body passes through the body by pressing the pointed tip of the plug against the conical concave surface formed on the front surface of the package of the optical element. It is directly aligned with the optical element without the need. For this reason, the alignment accuracy of the plug and the optical element is affected only by the dimensional tolerance of both, and is not affected by the dimensional tolerance of the body. Therefore, the alignment accuracy is improved.

Further, the tip of the plug inserted into the body is inserted into the recess surrounded by the conical concave surface, and the tip is in close contact with the concave surface. , And the interval between them can be set to a minimum. Therefore, the reduction of the received light power and the deterioration of the characteristics of the transmission signal due to the reduction can be suppressed.

In the optical jack according to the present invention, the body can be provided with a contact member for transmitting and receiving an electric signal to and from a plug inserted into the body.
By doing so, shared transmission of the optical signal and the electric signal becomes possible.

In this case, it is preferable that the contact piece member also serves as a plug holding means. By doing so, the size of the optical jack is reduced. Further, the plug holding means may be a resin spring formed integrally with the body.
By doing so, the number of components is reduced and the size of the optical jack is reduced.

In the optical jack according to the present invention, the contact piece can be omitted. In this case, as the plug holding means, a resin spring formed integrally with the body is particularly preferable. This provides a micro optical jack dedicated to optical signals.

The package of the optical element can be shared with the body. This further improves the alignment accuracy between the plug and the optical element. In addition, cost can be reduced by reducing the number of parts and the number of molding steps. Further, the length in the plug insertion direction is reduced.

[0015] The optical element may also be configured such that a part of the package is exposed outside the body, and the color of the package is different for light reception and light emission. This makes it possible to visually distinguish between light receiving and light emitting even after the optical element is incorporated in the body. Further, there is no problem that the optical element is erroneously inserted in the manufacturing process. In the conventional optical element, the package has the same shape for light reception and light emission, and both are transparent, so that it is difficult to visually distinguish the package.

When the color of the package is changed for light reception and light emission, only one of them may be colored, or both may be colored differently.

When the package is colored, it can be colored to limit the wavelength band of light to a band suitable for transmitting the light. In the case of a conventional transparent package, the light wavelength band is wide, and the material dispersion and the structural dispersion increase due to the difference in the refractive index of the wavelength of the light passing therethrough.However, by limiting the light wavelength band by coloring, These dispersions are reduced, and pulse width distortion and jitter as transmission characteristics are improved.

As for the body, a detachable sleeve can be provided at the entrance. Conventionally, this sleeve was constituted by a part of the body, and was therefore the same color as the body. Then, the body is colored in various desired color tones, and as a result, process control and the like are difficult.
However, if a detachable sleeve is provided at the entrance, the body has a common color tone, and a sleeve colored in a desired color tone can be attached to the body later. As a result, common components can be used up to the final process of mounting the sleeve, so that process management becomes easy. In addition, a wide variety of colors can be handled.

The electric connection terminal protruding outside the body can be bent to the lower side of the body. Conventionally,
Because this electrical connection terminal protruded to the side of the body,
The projection area when mounting the optical jack on the board was large, and the degree of freedom of the arrangement pattern was limited.Bending this electrical connection terminal to the lower side of the body, the projected area of the entire optical jack And the degree of freedom of the arrangement pattern increases. When the terminal is insert-molded in the body, the terminal is fixed to the body, and the rattle is eliminated. When a contact piece member or the like in the body is pressed into contact with the end of the terminal on the body side, rattling of the terminal is eliminated, and the flatness of the end on the body side is increased, so that the efficiency of mass production is improved.

When the electric connection terminal is bent to the lower side of the body, the terminal may be flush with the lower surface of the body,
The terminal may be protruded from the lower surface of the body by the thickness of the terminal.
Further, a gap may be provided between the terminal and the lower surface of the body.

The type of plug is not particularly limited. In the case of an optical jack having a contact member, any of a plug dedicated to an optical signal, a plug for common transmission of an optical signal and an electric signal, and a plug dedicated to an electric signal can be used. In the case of a jack, it is possible to use a plug dedicated to an optical signal or a plug for sharing transmission of an optical signal and an electric signal.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 10 show a first embodiment of the present invention. FIG. 1 is a perspective view of an optical jack according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a main part of the optical jack. 3 is a four-sided view of the optical jack, FIG. 4 is a three-sided view of a body used in the optical jack, FIG. 5 is a cross-sectional view of the body, and FIG. 6 is an optical element used in the optical jack. FIG. 7 is a three-view drawing of plug holding means (first contact member) used in the optical jack, and FIG. 8 is a two-view drawing of a second contact member used in the optical jack. 9 is a two-sided view of a third contact piece used in the optical jack, and FIG. 10 is a two-sided view of a fourth contact piece used in the optical jack.

The optical jack according to the first embodiment of the present invention is a small optical jack used for portable CDs, MDs, and the like, and is capable of shared transmission of optical signals and electric signals.

As shown in FIGS. 1 to 3, the optical jack includes a resin body 10 into which the plug 70 is inserted, and a body 10 inside the body 10 so as to be located at the tip end of the plug 70 inserted into the body 10. , The plug holding means 30, the second contact member 40, the third contact member 50, which are incorporated in the body 10 so as to be located around the plug 70 inserted in the body 10. The fourth contact member 60,
60, and the plug holding means 30 also serves as the first contact piece member.

Here, the plug 70 (FIG. 2) is a so-called mini-plug capable of shared transmission of an optical signal and an electric signal. An optical fiber is provided at the center of the plug 70, and the tip is exposed at the center of the tip surface of the plug 70. The tip of the plug 70 is a pointed portion 71 whose outer surface is reduced in diameter toward the tip. Behind the pointed portion 71 is a concave portion 72 whose outer surface is reduced in diameter toward the rear end side. These form a first conductive portion. A first straight body portion 73, which is a second conductive portion, is provided via an insulating member behind the concave portion 72, and a second straight body portion 74, which is a third conductive portion, is provided with an insulating member behind the first straight body portion 73. It is provided through.

As shown in FIGS. 4 and 5, the body 10 has a plug accommodating portion 11 into which a plug 70 is inserted at a central portion, and has an integrally formed thin sleeve 17 at an inlet portion. I have.

The optical element 2 is located at the back of the plug housing 11.
An element accommodating portion 12 for accommodating 0 is provided. The element accommodating section 12 communicates with the plug accommodating section 11, and the upper surface of the element accommodating section 12 is open upward so that the optical element 20 accommodated in the element accommodating section 12 from below can be viewed.

A first contact piece accommodating section 13 is provided on the entrance side of the element accommodating section 12 so as to intersect with the plug accommodating section 11. The plug holding means 30 serving also as the first contact piece member is inserted into the first contact piece accommodating portion 13 from below.

At a further entrance side of the first contact piece accommodating section 13, a second contact piece accommodating section 14 and a third contact piece accommodating section 15 are provided on one side of the plug accommodating section 11, and Five contact piece receiving portions 16 are provided on the other side of the plug receiving portion 11. The second contact piece member 40 is inserted into the second contact piece accommodating portion 14 from below, and the third contact piece member 50 is inserted into the third contact piece accommodating portion 15 from above. In addition, the fifth
The fourth contact piece members 60 are inserted into the contact piece accommodating portions 16 from above. Each of these contact piece receiving portions communicates with the plug receiving portion 11.

As shown in FIG. 6, the optical element 20 includes a lead frame 21, a light-receiving or light-emitting element main body 22 attached to the front center of the lead frame 21, and a package 23 for enclosing them. Have. A part of the lead frame 21 is used as an electrical connection terminal in the package 2.
3 protrudes rearward from the lower surface. The optical element 20 is inserted into the element accommodating portion 12 of the body 10 from below. In this state, the element main body 22 is connected to the plug accommodating portion 11 of the body 10.
Concentrically facing.

The package 23 is a board body having a rectangular front surface and is made of a transparent resin. At the front of the package 23, a conical concave surface 24 whose diameter gradually decreases toward the back is provided. Behind the concave surface 24, a straight circumferential surface is continuously provided. These are formed concentrically with the element main body 22, and the element main body 22 is located in a space surrounded by a circumferential surface.

As shown in FIG. 2, the pointed portion 71 of the plug 70 inserted into the plug accommodating portion 11 of the body 10 is inserted into the concave portion surrounded by the concave surface 24. Here, the concave surface 24
Is set to be the same or substantially the same as the tilt angle of the pointed portion 71. Accordingly, the outer surface of the pointed portion 71 is pressed against the concave surface 24, so that the plug 70 is axially aligned with the element main body 22 of the optical element 20.

Plug holding means 30 also serving as first contact piece member
Consists of a thin metal plate. As shown in FIG. 7, the plug holding means 30 includes a frame 31 having a round hole at the center where a plug 70 is inserted, and a base 32 extending rearward from a lower edge of the frame 31. And a pair of contact portions 33, 33 extending rearward from both side edges of the frame portion 31, and a terminal portion 34 extending laterally from one side edge of the base portion 32. The contact portions 33 on both sides are symmetrically inclined inward.

The plug holding means 30 is inserted and fixed to the first contact piece accommodating portion 13 of the body 10 from below with the frame portion 31 facing the entrance side. In this state, the contact portions 33 on both sides protrude into the plug accommodating portion 11 of the body 10, and the terminal portion 34 protrudes to the side of the body 10. When the plug 70 is inserted into the plug accommodating portion 11, the contact portions 33 on both sides elastically contact the concave portion 72 of the plug 70 from both sides. Here, the outer surface of the concave portion 72 gradually decreases in diameter toward the rear of the plug 70. For this reason, the contact portions 33, 33 elastically contact the concave portion 72 from both sides, so that the plug 70 is pressed toward the distal end side. As a result, the pointed portion 71 of the plug 70 becomes concave on the optical element 20. The plug 70 is axially aligned with the element body 22 of the optical element 20 by being pressed against the element 24.

As shown in FIG. 8, the second contact member 40 is
It has a vertical base portion 41, a contact portion 42 that inclines and protrudes inward from the base portion 41, and a terminal portion 43 that extends outward from a lower edge of the base portion 41. Further, as shown in FIG. 9, the third contact piece member 50 mounted on the body 10 side by side with the second contact piece member 40 includes a vertical base portion 51,
It has a contact portion 52 formed by cutting and raising a part of the base portion 51 in a tongue shape, and a terminal portion 53 extending outward from a lower edge portion of the base portion 51.

The second contact member 40 is inserted into the second contact accommodating portion 14 of the body 10 from below, and the third contact member 50
Is inserted into the second contact piece accommodating portion 14 of the body 10 from above. In this state, the contact portion 42 of the second contact member 40 projects into the plug accommodating portion 11 of the body 10 and the third contact member 5
The zero contact portion 52 is located outside the contact portion 42 with a gap. The terminal portions 43 and 53 protrude to the side of the body 10. When the plug 70 is inserted into the plug accommodating portion 11 in this state, the contact portion 42
The contact portion 52 is pressed by the second straight body portion 74 and elastically deforms outward to come into contact with the contact portion 52. Thereby, the body 10
The insertion of the plug 70 into the plug is detected as an electric signal.

As shown in FIG. 10, each of the fourth contact members 60, 60 has a vertical base 61 and a base 61.
Has a contact portion 62 formed by cutting and raising a part of the base portion in a tongue shape, and a terminal portion 63 extending outward from a lower edge portion of the base portion 61. Each fourth contact piece member 60 is connected to the fourth
It is inserted into the contact piece accommodating portion 16 from above. In this state, the contact portion 62 of the fourth contact piece member 60 projects into the plug accommodating portion 11 of the body 10, and the terminal portion 63 projects to the side of the body 10. When the plug 70 is inserted into the plug accommodating portion 11, each contact portion 6 of the fourth contact piece members 60
2 contacts the first straight body 73 and the second straight body 74 of the plug 70, respectively.

Next, the function of the optical jack according to the first embodiment of the present invention will be described.

The plug 7 is inserted into the plug accommodating portion 11 of the body 10.
0, the pointed portion 71 of the plug 70 penetrates through the plug accommodating portion 11 as shown in FIG.
No. 0 is inserted into a concave portion surrounded by a concave surface 24 formed on the front surface of the lens 0 and comes into contact with the concave surface 24. Thereby, the plug 7
The leading end surface of the optical element 20 faces the element body 22 of the optical element 20, and optical signals are transmitted and received between the two.

At this time, the plug holding means 30 serving also as the first contact piece member is provided in the cracked portion 72 of the inserted plug 70.
Are elastically contacted from both sides. Here, the outer surface of the concave portion 72 gradually decreases in diameter toward the rear of the plug 70. For this reason, the contact portion 3 is
The plugs 70 are pressed elastically from both sides, so that the plug 70 is pressed toward the distal end. As a result, the plug 70 is prevented from coming off, and the pointed portion 71 is pressed against the concave surface 24 of the optical element 20. As a result, the plug 70 is illuminated by the concave surface 24 of the optical element 20 without passing through the body 10. The axis is directly aligned with the element body 22 of the element 20. Therefore, the plug 70 and the optical element 20 are aligned with high accuracy without being affected by the dimensional tolerance of the body 10.

The tip of the plug 70 inserted into the plug accommodating portion 11 of the body 10 is inserted into a concave portion surrounded by the conical concave surface 24, and the tip of the plug 70 is concave.
4, the distance between the plugs 70 can be set to a minimum without bringing the tip of the plug 70 into contact with the element body 22. Therefore, the reduction of the received light power and the deterioration of the characteristics of the transmission signal due to the reduction can be suppressed.

Plug holding member 30 also serving as first contact member
The contact portions 33, 33 of the plug 70 contact the concave portion 72, which is the first conductive portion of the plug 70, so that an electric signal is transmitted and received between them. In addition, the contact portion 42 of the second contact member 40 is pressed by the second straight body portion 74 of the plug 70 and elastically deforms outward to come into contact with the contact portion 52 of the third contact member 50, so that the body Insertion of plug 70 into 10 is detected as an electrical signal. Further, the contact portions 62 of the fourth contact members 60 contact the first straight body portion 73 and the second straight body portion 74 of the plug 70, which are the second and third conductive portions, respectively. Transmission and reception of electric signals are performed between these.

As described above, the optical jack according to the first embodiment of the present invention has excellent optical signal transmission characteristics in terms of both the alignment accuracy of the plug 70 and the optical element 20 and the distance between them. .

FIGS. 11 and 12 show a second embodiment of the present invention. FIG. 11 is a perspective view of an optical jack according to a second embodiment of the present invention, and FIG. 12 is a cross-sectional view of a main part of the optical jack. It is.

The optical jack according to the second embodiment of the present invention differs from the optical jack according to the first embodiment in the plug holding means 30.

That is, the plug holding means 30 also functions as the first contact piece member in the first embodiment, but is formed integrally with the body 10 in the second embodiment. Specifically, a pair of leaf spring portions 1 extending toward the inlet side is provided on the body 10.
8 and 18 are formed integrally with the plug accommodating portion 11 interposed therebetween.

The leaf spring portions 18, 18 are similar to the contact portions 33, 33 of the plug holding means 30, which also serve as the first contact piece members.
The tip 70 of the plug 70 is elastically contacted with the concave portion 72 of the inserted plug 70 from both sides, and the tip 70 of the plug 70 is pressed against the concave surface 24 of the optical element 20 to align the axis of the plug 70 with the optical element 20.

The optical jack according to the second embodiment of the present invention performs the common transmission of an optical signal and an electric signal.
The configuration in which the plug holding means 30 is integrated with the body 10 is as follows.
This is particularly effective for reducing the size of an optical jack dedicated to an optical signal without using a contact member.

FIGS. 13 and 14 show a third embodiment of the present invention. FIG. 13 is a perspective view of an optical jack according to the third embodiment of the present invention, and FIG. 14 is a cross-sectional view of a main part of the optical jack. It is.

The optical jack according to the third embodiment of the present invention is different from the optical jack according to the first embodiment in that
0 is different.

That is, the optical element 20 here does not have a dedicated package, and the body 10 also serves as the package. Specifically, the lead frame 21 of the optical element 20 and the element body 22 attached to the lead frame 21 are insert-molded in the body 10. Along with this, a conical concave surface 19 is formed in the body 10, against which the pointed tip 71 is pressed for axial alignment of the plug 70.

According to this configuration, the body 10 and the optical element 2
Since the inclination of the optical element 20 in the body 10 due to the dimensional tolerance of 0 is eliminated, the alignment accuracy between the plug 70 and the optical element 20 is further improved. In addition, cost can be reduced by reducing the number of parts and the number of molding steps. Further, the length of the optical jack in the plug insertion direction is reduced, and the optical jack can be downsized.

FIG. 15 is a perspective view of an optical jack according to a fourth embodiment of the present invention.

The optical jack according to the fourth embodiment of the present invention is different from the optical jack according to the first embodiment in that
0 sleeve 17 is different.

That is, the sleeve 17 provided at the entrance of the body 10 is formed integrally with the body 10 in the first embodiment, but is separated from other parts of the body 10 in the fourth embodiment. . Specifically, this sleeve 17
Is a pair of claw portions 1 on both sides protruding toward the body of the body 10.
7 ', 17', which are inserted and fixed in insertion holes 17 ", 17" provided in the main body side of the body 10, thereby being held at the entrance of the body 10.

According to this configuration, when various colors are required for the body 10, the main body side of the body 10 can be made a common color and only the sleeve 17 can be colored to the required color. In this way, even when a wide variety of colors are required, common parts are used until the final step, and by attaching the sleeve 17 in the final step, the color tone can be handled. Becomes

This configuration is applicable not only to the optical jack according to the present invention but also to other general optical jacks.

FIG. 16 is a front view of an optical jack according to the fifth embodiment of the present invention.

The optical jack according to the fifth embodiment of the present invention differs from the optical jack according to the first embodiment in the electrical connection terminals.

That is, in the optical jack according to the first embodiment, as the electrical connection terminals, the protruding portion of the lead frame 21 of the optical element 20, the terminal portion 34 of the plug holding means 30 also serving as the first contact piece member, and the second connection portion. The terminal portion 43 of the one-sided member 40, the terminal portion 53 of the third contact-side member 50, and the fourth contact-side members 60, 60.
Each terminal section 63 exists. These electrical connection terminals protrude laterally from the lowermost part of the body 10.
On the other hand, in the optical jack according to the fifth embodiment, these electrical connection terminals are bent along the lower surface of the body 10. By doing so, the projected area when the optical jack is mounted on the board is reduced, and the degree of freedom of the arrangement pattern is increased.

Although the lower part of the body 10 is in contact with the lower surface of the body 10 in FIG. 16, it may be embedded in the lower surface of the body 10 so as to be flush with the lower surface of the body 10. It may be away from the lower surface.

This configuration is not limited to the optical jack according to the present invention, but is applicable to other general optical jacks.

FIG. 17 is a front view of an optical jack according to the sixth embodiment of the present invention.

The optical jack according to the sixth embodiment of the present invention is the same as the optical jack according to the fifth embodiment, except that
The electrical connection terminals 4, 43, 53, 63, etc. are separated from other parts and insert molded into the body 10.

The terminal portion 53 of the third contact member 50 will be specifically described. The third contact member 50 includes a terminal portion 53 protruding out of the body 10 and a terminal portion other than the terminal portion incorporated in the body 10. And part 54. Also, the body 10
Are separated into a main body 10a having an open lower surface and a bottom plate 10b closing the opening. Here, the terminal 53
Is insert-molded in the bottom plate portion 10b, the upper portion is bent along the upper surface of the bottom plate portion 10b, and the lower portion is
0b is bent along the lower surface. On the other hand, the portion 54 other than the terminal portion is bent such that the lower portion is in surface contact with the upper portion of the terminal portion 53.

In a state in which the portion 54 other than the terminal portion is incorporated in the main body portion 10a of the body 10, the bottom plate portion 10b is attached to the main body portion 10b, so that the portion 54
Is in surface contact with the upper part of the terminal portion 53. Here, the terminal 53
Into the bottom plate portion 10b of the body 10,
The terminal portion 53 is fixed to the bottom plate portion 10b, and the backlash is eliminated. For this reason, even though the terminal portion 53 is separated, the terminal portion 53 surely comes into surface contact with the portion 54 other than the terminal portion, thereby preventing poor conduction. By separating the terminal portion 53, the efficiency of mass production can be improved.

While the first to sixth embodiments of the present invention have been described above, in any of the embodiments, the optical device 2
0 package 23 can be colored in different colors for light reception and light emission.

According to this configuration, the optical jack body 1
Even after the optical element 20 is incorporated into the optical jack 0, it is visually determined whether the optical jack is for light reception or light emission.
Further, a situation in which different types of optical elements 20 are erroneously incorporated in the manufacturing process is avoided. In addition, by setting the color tone in this case so that the wavelength band of light is limited to a band suitable for transmission and reception of the light, material dispersion and structural dispersion are reduced, and pulse width distortion and jitter as transmission characteristics are reduced. Is improved.

This configuration is applicable not only to the optical jack according to the present invention but also to other general optical jacks.

In the above embodiment, the optical jack for performing the common transmission of the optical signal and the electric signal has been mainly described. However, the present invention can be applied to the optical jack dedicated to the optical signal. The type of the plug is not particularly limited, and a plug that transmits only an optical signal or only an electric signal can be used in an optical jack that performs shared transmission of an optical signal and an electric signal.

[0072]

As described above, in the case of the optical jack according to the present invention, a conical concave surface is formed on the front surface of the package of the optical element, and the inserted plug is pressed against this concave surface by the plug holding means. Since the axis of the plug and the optical element are aligned, the axis of the plug and the optical element are directly aligned without passing through the body.
The alignment accuracy of both is improved. Further, the distance between the two is reduced. Therefore, the transmission characteristics of the optical signal are improved from both sides.

Further, the size of the optical jack can be reduced by using a structure in which the contact piece for transmitting the electric signal also functions as the plug holding means.

Further, by using a resin spring formed integrally with the body for the plug holding means, the number of components can be reduced and the optical jack can be reduced in size.

Further, by sharing the package of the optical element with the body, the alignment accuracy of the plug and the optical element can be further improved, and the cost and size of the optical jack can be reduced.

Further, by exposing a part of the package of the optical element to the outside of the body, and by changing the color of the package between the light receiving type and the light emitting type, the type of the optical jack can be easily identified. Erroneous insertion of the optical element is prevented.

Further, when coloring the package of the optical element, the transmission characteristics are improved by selecting a color in which the wavelength band of the light is limited to a band suitable for the transmission of the light.

Further, by making the sleeve provided at the entrance of the body detachable, it is possible to cope with the color tone only by coloring the sleeve, and as a result, the process management becomes easy.

Further, by bending the electric connection terminals protruding outside the body to the lower side of the body, the degree of freedom of the arrangement pattern of the optical jack is increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of an optical jack according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the optical jack.

FIG. 3 is a four-sided view of the optical jack, (a) is a plan view,
(B) is a side view, (c) is a front view, and (d) is a bottom view.

FIG. 4 is a three side view of a body used for the optical jack;
(A) is a plan view, (b) is a side view, and (c) is a bottom view.

5A and 5B are cross-sectional views of the body, wherein FIG. 5A is a view taken along line AA of FIG. 4 (cross-sectional plan view), and FIG. 5B is a view taken along line BB of FIG. It is.

FIG. 6 is a two-sided view of an optical element used for the optical jack;
(A) is a front view, (b) is a bottom view.

FIGS. 7A and 7B are three views of a plug holding means (first contact member) used in the optical jack, wherein FIG. 7A is a plan view, FIG. 7B is a side view, and FIG.

FIG. 8 is a two-sided view of a second contact piece member used for the optical jack, (a) is a plan view, and (b) is a side view.

FIG. 9 is a two-sided view of a third contact piece member used in the optical jack, (a) is a front view, and (b) is a side view.

FIG. 10 shows a fourth contact piece member 2 used for the optical jack.
(A) is a front view and (b) is a side view.

FIG. 11 is a perspective view of an optical jack according to a second embodiment of the present invention.

FIG. 12 is a transverse sectional view of a main part of the optical jack.

FIG. 13 is a perspective view of an optical jack according to a third embodiment of the present invention.

FIG. 14 is a cross-sectional view of a main part of the optical jack.

FIG. 15 is a perspective view of an optical jack according to a fourth embodiment of the present invention.

FIG. 16 is a front view of an optical jack according to a fifth embodiment of the present invention.

FIG. 17 is a front view of an optical jack according to a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Body 11 Plug main part 12 Element accommodating part 13, 14, 15, 16 Contact piece accommodating part 17 Sleeve 19 Leaf spring (resin spring) 20 Optical element 21 Lead frame 22 Element main body 23 Package 24 Concave surface 30 Plug holding member 40, 50 , 60 contact piece 70 plug 71 pointed tip 72 cracked part

Continuation of the front page (72) Inventor Yutaka Uno 1-4-3 Kitakyuho-ji Temple, Yao-shi, Osaka Ho-Siden Corporation

Claims (9)

[Claims] 1. A body in which a plug is inserted, and a front end of the plug, which is housed in the body and located at the tip side of the plug inserted into the body, and which has a pointed tip end of the plug facing the body, A light receiving or light emitting optical element having a conical concave surface for axial alignment with which the tip abuts is formed, and is provided in the plug so as to engage with a crack portion of the plug inserted into the body. An optical jack, comprising: plug holding means for pressing the tip of the plug against the concave surface by engagement. 2. The optical jack according to claim 1, wherein the body is provided with a contact member for transmitting and receiving an electric signal to and from a plug inserted into the body. . 3. The optical jack according to claim 2, wherein the contact member also functions as a plug holding unit. 4. The optical jack according to claim 1, wherein the plug holding means is a resin spring formed integrally with the body. 5. The optical jack according to claim 1, wherein the optical element has a structure in which a package is shared with the body. 6. The optical element according to claim 1, wherein a part of a package is exposed outside the body, and a color of the package is different between light receiving and light emitting.
23. The optical jack according to 3, 4, or 5. 7. The optical jack according to claim 6, wherein the package is colored so as to limit a wavelength band of light to a band suitable for transmitting the light. 8. The apparatus according to claim 1, wherein the body has a detachable sleeve at an entrance.
The optical jack according to 5, 6, or 7. 9. The electric connection terminal according to claim 1, wherein the electric connection terminal protruding outside the body is bent to a lower side of the body. The described optical jack.