JPH08138787A - Jack plate - Google Patents

Abstract

PURPOSE: To prevent deflection of a connecting substrate due to the force of insertion of a pin plug and to prevent faulty installation of a pin jack. CONSTITUTION: A pin jack 1 is inserted into a storage hole 7 of a housing main body 2 from the front of the main body and installed. The housing main body 2 is provided with a stopper 11 that is sandwiched between the pin jack 1 and a connecting substrate 3 to bear the force of insertion of a pin plug and to ease the force of pressing the connecting substrate 3 so as to prevent deflection. An identifying portion 17 colored for the identification of the pin jack 1 is provided on the front of the connecting substrate 3, and the pin jack 1 with the same color as the identifying portion 17 is selected to prevent faulty installation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack plate provided with a pin jack to which an electric signal is input and used as a terminal plate attached to a television receiver or the like.

[0002]

2. Description of the Related Art In various audiovisual devices such as television receivers, there are a total of 3 pin jacks colored yellow and receiving video signals and pin jacks colored red and white receiving audio signals. Each set is a set, and a plurality of sets of this pin jack are arranged on the jack plate.

The jack plate is provided on the back surface or the front surface of the device in order to electrically connect a pin plug that is externally connected to the main wiring board provided in the device. Since a normal pin jack is arranged in parallel with the main wiring board, a relay board is attached to the back surface of the jack board, and the pin jack and the main wiring board are electrically connected via this relay board. Connected.

The relay board and the main wiring board provided in the device are electrically connected to each other by a connector for connecting printed wiring boards and the like, whereby a signal input to the pin jack is connected to the main wiring board. The signal is output and processed.

In the conventional jack plate, as shown in FIGS. 5 and 6, a housing hole for the pin jack 50 is recessed from the back side of the housing body 51, and the pin jack 50 is housed from the back side of the housing body 51. After inserting it into the hole and engaging the engaging part of the pin jack body with the housing body to prevent it from slipping out to the back side, the relay board 52 is attached to the back surface of the housing body 51 and its electrical connection is made. It is carried out.

[0006]

On the other hand, when a pin plug from an external device such as a VCR is inserted into the pin jack mounted on the jack plate, the connection with the pin jack cannot be confirmed by a lock feeling or a lock sound. Due to the structure, the pin plug may be inserted with a large insertion force far exceeding the designer's expectation.

However, in the jack plate having the above-mentioned conventional structure in which the pin jack is attached from the back side, the inserting force of the pin plug is directly transmitted to the engaging portion or the relay substrate, so that the engaging portion is engaged. If they are not aligned, the pin jack will drop off to the back side or move to the back side to bend the relay board, and this bending will drop the solder that electrically connects the pin jack terminal to the relay board pattern. There is a problem that it does or causes a loss. As a result, there is a problem that the connection by solder becomes insufficient and the signal cannot be transmitted.

Further, as described, the number of pin jacks is three.
It is necessary to insert each pin jack into a predetermined accommodating hole of the housing main body because the pin jacks are assembled so as to form one set.

However, at the time of actual assembly, the pin jack is erroneously inserted into an accommodation hole different from the corresponding accommodation hole,
The erroneous insertion may be followed by soldering with the relay board.

There are two types of pin jacks, a switch-equipped pin jack having a switch terminal and a pin jack not having a SW function. The SW-equipped pin jack is erroneously inserted into another housing hole of the housing. In some cases, signal processing could not be performed, resulting in a defective product. Therefore, when reassembling, it is necessary to remove the solder, remove the relay substrate, and the like, which requires extra steps.

The present invention has been made in view of the above-mentioned problems, and provides a jack plate capable of preventing a defective connection with a connection board without the pin jack dropping off even when a large insertion force by a pin plug is received. The purpose is to do.

Another object of the present invention is to provide a jack plate which has a simple structure and can surely prevent erroneous mounting of a pin jack.

[0013]

In order to solve the above problems, the present invention provides a jack plate according to claim 1 in which a housing main body is formed with a housing hole into which a pin jack is inserted from the front side. Attached to the back of the housing body,
A connection board electrically connected to the terminal of the pin jack inserted into the accommodation hole, and formed on the back surface of the housing body so as to be located between the pin jack and the connection board.
And a stopper with which the insertion end surface of the pin jack inserted into the accommodation hole abuts.

Further, the invention of claim 2 is characterized in that the stopper is formed integrally with the housing body.

Further, in the invention of claim 3, the connection board has a terminal hole through which the terminal of the pin jack is inserted, and the periphery of the terminal hole on the front surface is colored for identifying the pin jack. Is characterized by.

Further, according to the invention of claim 4, the connection board attached to the back surface of the accommodation hole is provided with terminal holes corresponding to the number of terminals of the pin jack inserted into the accommodation hole. Characterize.

Further, the invention of claim 5 is characterized in that the pin jack is formed with an engagement projection which engages with the accommodation hole of the housing body.

[0018]

According to the first aspect of the invention, the pin jack inserted into the housing hole of the housing body comes into contact with the stopper and stops. The stopper is interposed between the pin jack and the connection board, and receives the insertion force when inserting the pin plug from the external device into the pin jack. Therefore, even if an abnormal insertion force is applied, the pin jack does not fall off, and the pressing force acting on the connection board is reduced or disappears, so that the board does not bend and the solder drops off due to the bending. , Connection defects such as defects are eliminated. On the other hand, the forward force that the pin jack receives from the pulling force of the pin plug is limited to the frictional force generated from the contact pressure between the two, and the pin jack cannot be pulled out only by providing a simple retaining mechanism.

According to the second aspect of the present invention, since the stopper is formed integrally with the housing body, the number of parts can be reduced and the stopper mounting step can be omitted.

According to the third aspect of the present invention, prior to inserting the pin jack into the housing hole of the housing body, the coloring can be visually recognized from the housing hole, and the pin jack of the same color as this color is inserted into the housing hole. To do. As a result, incorrect attachment of the pin jack can be prevented.

According to the fourth aspect of the present invention, the SW is provided on the connection substrate on the rear surface of the accommodation hole into which the SW-equipped pin jack is inserted.
The number of terminal holes corresponding to the number of terminals of the pin jacks with holes is formed, and the connection board on the back of the accommodating hole into which the pin jack without the SW function is inserted is the terminal of the pin jack without the SW function. The terminal holes corresponding to the number are drilled.

Therefore, the pin jack with SW is mistakenly S
Even if an attempt is made to insert the pin into the accommodating hole into which a pin jack having no W function is inserted, the tip of the SW terminal cannot be inserted into contact with the connection board, which prevents erroneous insertion.

According to the fifth aspect of the present invention, the engagement of the engaging projections prevents the pin jack from falling off, and also reliably prevents the pin jack from coming off when the pin plug of the external device is pulled out.

[0024]

1 shows a jack plate according to an embodiment of the present invention, in which a housing main body 2 in which a plurality of pin jacks 1 are arranged and a relay board 3 as a connection board mounted on the back surface of the housing main body 2 are connected. It has and.

In the pin jack 1 provided in the housing body 2, a connecting cylinder portion 4 into which a pin plug (not shown) from a video deck or other external device is freely inserted and removed is provided on the front side of the block-shaped body portion 5. In addition to the above, a straight terminal 6 connected to the relay substrate 3 is provided on the back side of the main body 5 (see FIG. 2). The pin jack terminal 6 having no SW function is composed of two terminals, a signal terminal and an earth terminal, and is attached to the body portion 5 of each pin jack. Further, the SW-equipped pin jack is further provided with a switch terminal, and a total of three terminals are attached to the pin jack.

Here, one pin jack for video,
Two pin jacks for the left and right voices form one set, and the three pin jacks 1 forming the set are the housing body 2
Are arranged in a vertical row.

In the illustrated example, the housing body 2 includes
One set of pin jacks 1 arranged vertically is arranged in three rows on the left and right, but this is to support AV equipment such as a plurality of VCRs, and the number thereof is not particularly limited. Absent.

The housing body 2 has three receiving holes 7 into which the pin jacks 1 are inserted, three in the vertical direction and three in the left and right.
Formed in rows.

FIG. 2 shows the receiving hole 7, and the insertion portion 7
a, the housing portion 7b, and the penetrating portion 7c are sequentially connected to each other. The insertion portion 7a is for inserting the pin jack 1 and is located on the front side of the housing body 2. That is, the accommodation hole 7 of this embodiment is one in which the pin jack 1 is inserted from the front side.

The accommodation portion 7b of the accommodation hole 7 accommodates the main body portion 5 of the pin jack 1 inserted from the insertion portion 7a. In this accommodation state, the connection tubular portion 4 of the pin jack 1 is accommodated.
Protrudes to the front side of the housing body 1, and the pin plug is inserted into and removed from an external device.

The accommodating portion 7b is formed to have a diameter slightly larger than that of the insertion portion 7a, so that the accommodating portion 7 is provided with an engaging step portion 8 on the front side of the upper portion thereof.

On the other hand, each pin jack 1 has an engaging projection 9 for engaging with the engaging stepped portion 8 on the upper surface of the main body portion 5, and the pin jack 1 is inserted into the accommodation hole 7. As a result, the engagement step portion 8 and the engagement protrusion 9 are engaged with each other. As a result, the pin jack 1 is locked in the front,
It is possible to reliably prevent the pin jack 1 from coming off when the pin plug is pulled out.

The penetrating portion 7c of the accommodation hole 7 is a pin jack 1
The terminal 6 of the pin jack 1 penetrates when the pin jack 1 is accommodated in the accommodation hole 7.

The penetrating end of the terminal 6 protrudes to the rear surface side of the housing body 2 and also penetrates the relay board 3, so that the solder 10 electrically connects to the relay board 3 as described later. The connection is made.

The penetrating portion 7c is located on the rear surface side of the housing body 2, and the peripheral portion of the penetrating portion 7c projects inward of the accommodation hole 7 so that the peripheral portion of the penetrating portion 7c is a stopper. It is 11. This stopper 11
Is molded integrally with the housing body 2, and the step of attaching the stopper 11 is unnecessary.

Further, by forming the stopper 11, the stopper 11 receives the insertion force when the pin plug is inserted from the external device. As a result, the pin jack 1 does not drop off to the rear side, and the pressing force when inserting the pin plug acting on the relay board 3 is not significantly reduced, so that the relay board 3 does not bend and the flexure is prevented. It is possible to prevent the solder 10 from coming off and being damaged.

The penetrating portion 7c of the accommodation hole 7 is formed to have a diameter larger than that of the terminal hole 12 in the relay substrate 3, as described later.

The relay substrate 3 is attached to the back surface of the housing body 2 as described above. In order to perform this attachment, on both sides of the housing body 2, as shown in FIG.
The hook 14 projects, and a hook slit 15 is provided at a corresponding position on the relay board 3. Then, the hook 14 and the hook slit 15 are engaged with each other, so that the relay substrate 3 is attached.

The relay board 3 is electrically connected to the terminal 5 of the pin jack 1 inserted in the housing hole 7 of the housing body 2. This electrical connection is made by the relay board 3
This is done on the back side of the
The terminal hole 12 through which the terminal 5 of the pin jack 1 is inserted is formed in a corresponding number at a corresponding portion (see FIGS. 1 and 2).

That is, in the rear surface of the accommodation hole 7 at the lowest stage for accommodating the pin jack 1 not having the SW function, two terminals 5 of the pin jack 1 not having the SW function are arranged side by side so as to be inserted therethrough. Individual terminal holes 12 are provided. Further, the rear side of the middle and upper housing holes 7 for accommodating the SW-equipped pin jacks 1 are arranged side by side so that the three terminals 5 of the SW-equipped pin jacks 1 can be inserted.
Individual terminal holes 12 are provided.

The periphery of these side-by-side terminal holes 12 is an identification portion 17 as shown in FIG.

Each identification section 17 has a corresponding pin jack 1
The same color as the color is applied. For example, when the main body 5 of the pin jack to which the video signal is input is yellow and the main body 5 of the pin jack to which the audio signal is input is red and white, it corresponds to the pin jack for the video signal. The identification portion 17 around the terminal hole 12 is colored yellow, while the identification portion 17 around the terminal hole 12 corresponding to each pin jack for audio signals is colored red and white, respectively.

For this coloring, if a printing process of silk-screening a lot display etc. on the relay substrate is used, it is not necessary to add a new coloring process.

The colored identification portion 17 corresponding to the pin jack 1 is provided in the housing hole 7 of the housing body 2.
Since the penetrating portion 7c has a large diameter, its color can be confirmed from the housing hole 7 of the housing body 2. Then, by inserting the pin jack 1 of the same color as the identification portion 17 into the accommodation hole 7, the accommodation hole 7 of the pin jack 1 is inserted.
It is possible to prevent erroneous insertion into the device and prevent defective products.

FIG. 3 shows a rear view of the relay substrate 3 assembled on the rear surface of the housing body 2.

A ring-shaped land pattern 21 is formed around each terminal hole 12 from which the terminal 6 of the pin jack 1 projects, and each land pattern 21 is
It is continuous with the lead pattern 22. A ring-shaped land pattern 23 is also connected to the end of each lead pattern 22 opposite to the land pattern 21.

One end of a terminal pin 24 described later is electrically connected to the land pattern 23 at the opposite end by soldering.

Reference numeral 25 is a slit for cutting formed on the back surface of the relay substrate 3 in the vertical direction, which is used when the relay substrate 3 is cut to a predetermined size.

In this embodiment, the slit 25 for cutting is used.
Is used to attach an earth plate 27 (see FIG. 4) described later.

FIG. 4 shows an assembled state of this embodiment. The relay board 3 is attached to the main wiring board 30 in an upright state integrally with the housing body 2. The positioning and mounting of the housing body 2 with respect to the main wiring board 30 are performed by fitting the boss portions 31 formed on the lower surface of the housing body 2 into the corresponding holes of the main wiring board 30.

The relay board 3 is electrically connected to the terminal 6 of the pin jack 1 by the solder 10, and also electrically connected to the pattern (not shown) of the main wiring board 30 to be input to the pin jack 1. It serves as a connection board for transmitting the generated signal to the main wiring board 30.

The electrical connection to the main wiring board 30 is made by the terminal pins 24. Terminal pin 24
4 is bent into an "L" shape as shown in FIG. 4, one end 24a of which is inserted through the relay substrate 3, and the insertion end is solder 32 and the land pattern 23 of the relay substrate 3 (see FIG. 3). Refer to)).

As shown in FIG. 3, the other end 24b of the terminal pin 24 hangs from the relay board 3 and the main wiring board 30 is inserted therethrough. Then, the insertion end of the other end 24b is connected to the pattern of the main wiring board 30 via the solder 33 as shown in FIG.

In the earth plate 27 attached to the back surface of the relay board 3, the end leg portions 36 on the relay board 3 side are fitted into the cutting slits 25 (see FIG. 3) of the board 3, and the earth land pattern and the solder are soldered. Is connected. A ground leg portion 34 hangs from the lower end surface of the ground plate 27, and the ground leg portion 34 inserts the main wiring board 30 as shown in FIG.

Then, the ground leg portion 34 is grounded on the main wiring board 30 by the solder 35 (not shown).
Installed electrically connected to.

In the illustrated example, the earth plate 2
7 supports the housing main body 2 and the relay substrate 3 from the back side, and thereby acts to prevent the rearward tilt of these when the pin plug of the external device is inserted, and at the same time, through the relay substrate, the main wiring substrate 30 It acts so as to be electrically connected to the ground pattern, and prevents the lead pattern on the relay substrate 3 from being overcrowded.

Next, the assembly of this embodiment will be described.

First, as shown in FIG. 1, the relay board 3 is attached to the rear surface of the housing body 2 by engaging the hook 14 and the hook slit 15. Due to this attachment, the identification portion 17 of the relay board 3 becomes the housing body 2
Facing each accommodation hole 7.

Each pin jack 1 is attached to the accommodation hole 7
From this, the color of the identifying portion 17 is visually recognized, and the pin jack 1 of the same color as the identifying portion 17 is inserted into the accommodation hole 7. This prevents erroneous insertion of the pin jack 1 and eliminates the occurrence of defective products due to erroneous insertion.

The pin jack 1 is attached to the accommodation hole 7 from the front side thereof.
The end surface of the main body portion 5 of the pin jack 1 inserted into the stopper abuts on the stopper 11 and is stopped. At the same time, the engaging projection 9 of the pin jack 1 engages with the engaging stepped portion 8 of the housing hole 7 of the housing body 1 and is positioned and fixed in the housing hole 7.

After the insertion of all the pin jacks 1 is completed, the terminal 6 and the land pattern 21 on the back side of the relay board 3 are connected by the solder 10, and then the housing body 2 and the relay board are connected as shown in FIG. 3 is vertically attached to the main wiring board 30, and the terminal pins 24 of the relay board 3 are attached.
And the pattern of the main wiring board 30 are connected by solder 33.

Then, the ground plate 27 is erected on the main wiring board 30, the ground pins 34 and the main wiring board 30 are electrically connected by the solder 35, and the assembly is completed.

The jack board assembled in this way is
The pin plug of the external device is inserted into the pin jack 1.
Since the stopper 11 receives the pressure, the pressing force acting on the relay substrate 3 is reduced. For this reason, the relay substrate 3 does not bend, and the solder 10 can be prevented from falling off or being damaged due to the deflection, and the electrical connection between the pin jack 1 and the relay substrate 3 can be maintained well.

The present invention is not limited to the above embodiment, but various modifications can be made. For example, the main wiring board 30 may be used as a connection board, and the main wiring board 30 may be directly attached to the back surface of the housing 2. in this case,
There is an advantage that the relay board 3 becomes unnecessary and the number of parts is reduced.

[0065]

As described above, according to the first aspect of the present invention, the stopper 11 with which the pin jack 1 abuts is provided on the rear surface of the housing body 2 into which the pin jack 1 is inserted into the accommodation hole 7 from the front side. Is forming. This stopper 11
Is located between the pin jack 1 and the connection board 3 and receives the insertion force when the pin jack 1 is inserted into the pin plug from an external device.

Therefore, the pin jack 1 does not fall off from the accommodation hole 7 to the back side.

Further, the pressing force acting on the connection board 3 is reduced or disappeared, and the connection board 3 is not bent, and good electrical connection between the pin jack 1 and the connection board 3 can be maintained.

According to the second aspect of the present invention, since the stopper is formed integrally with the housing body, the number of parts can be reduced, and the step of attaching the stopper can be omitted.

According to the invention of claim 3, a terminal hole through which the terminal of the pin jack is inserted is formed in the connection board, and the periphery of the terminal hole on the front surface of the connection board is colored for identifying the pin jack. . This makes it possible to visually check the coloring from the housing hole before inserting the pin jack into the housing hole, and by inserting the pin jack of the same color into this housing hole, the wrong pin jack can be attached. Can be prevented.

According to the fourth aspect of the invention, even if the pin jack with SW is mistakenly stored in the storage hole into which the pin jack without the SW function is inserted, the tip of the SW terminal abuts on the connection board. It cannot be accommodated and erroneous insertion is prevented.

According to the fifth aspect of the present invention, the engagement of the engagement protrusion can prevent the pin jack from coming off when the pin plug of the external device is pulled out.

[0072]

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a housing body in a state where a pin jack is inserted.

FIG. 3 is a rear view of a relay substrate.

FIG. 4 is a side view showing an assembled state.

FIG. 5 is a perspective view showing a conventional jack plate.

FIG. 12 is a plan view of FIG.

[Explanation of symbols]

 1 pin jack 2 housing body 3 relay board 6 terminal 7 accommodation hole

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[Procedure amendment]

[Submission date] February 28, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a housing body in a state where a pin jack is inserted.

FIG. 3 is a rear view of a relay substrate.

FIG. 4 is a side view showing an assembled state.

FIG. 5 is a perspective view showing a conventional jack plate.

FIG. 6 is a plan view of FIG.

[Explanation of symbols] 1 pin jack 2 housing body 3 relay board 6 terminal 7 accommodation hole

Claims (5)

[Claims] 1. A housing body (2) having a housing hole (7) into which the pin jack (1) is inserted from the front side.
A connection board (3) that is attached to the rear surface of the housing body (2) and is electrically connected to the terminal (6) of the pin jack (1) inserted into the accommodation hole (7); ) And the connection board (3), the housing hole (7) is formed on the back surface of the housing body (2).
A jack plate, comprising: a stopper (11) with which the insertion end surface of the pin jack (1) inserted into the contacting member abuts. 2. The jack plate according to claim 1, wherein the stopper (11) is molded integrally with the housing body (2). 3. The connection board (3) has a terminal hole (12) through which the terminal (6) of the pin jack (1) is inserted, and a pin jack is identified around the terminal hole (12) on the front surface thereof. The jack plate according to claim 1 or 2, wherein the jack plate is colored. 4. The connection board (3) attached to the rear surface of the accommodation hole (7) has terminal holes corresponding to the number of terminals (6) of the pin jack (1) inserted in the accommodation hole (7). The jack plate according to claim 1, 2 or 3, wherein (12) is provided. 5. The pin jack (1) is formed with an engagement protrusion (9) which engages with a housing hole (7) of the housing body (2). Alternatively, the jack board according to claim 4.