JPH02129872A - Electric connector - Google Patents

Abstract

PURPOSE:To easily repair an electric connector in which a plurality of contacts are provided in an insulator by providing detachable contacts at the outer periphery of undetachable contacts. CONSTITUTION:For instance, in an electric connector 23 connected to a signal cable 22 employed for a video scope, a plurality of single pin contacts 52 and shield contacts 54 arranged respectively for connection of wires 55 and a shield wire 56 to an insulator 39, and post 53 is inserted. The shield wire 56 which needs repair often due to malfunction is attached detachably and the single pin contacts 52 and also the post 53 which comparatively rarely need repair are attached undetachably. Further, the shield contacts 54 are provided at the outside of the single pin contacts 52. Thus, repair is easily conducted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrical connector in which detachable contacts are disposed on the outer circumferential side to facilitate repair and the like.

[Prior Art] In general, electrical equipment is capable of supplying signals and drive signals via electrical connectors.

The electrical connector described above has a structure in which contacts are attached to an insulator and is widely used. These contacts can be either non-removable or removable from the insulator. Non-removable items are Utsukai 59-7750.
As disclosed in No. 7, there is a device in which an insulator and a contact are integrally molded. In addition, there are connectors that are watertightly fixed to an insulator to ensure watertightness, and connectors that are fixed to a simple structure by eliminating the attachment l112 mechanism so that the connector can be miniaturized. These wires are soldered to contacts after wiring.

On the other hand, with a removable structure, for example, there is a type in which the contact and wire are connected by crimping (if the contact is fixed to an insulator and cannot be crimped); this is effective in the case of shielded contacts. be. this is,
The wire has a double structure of an inner conductor and an outer conductor, and in order to connect it to a coaxial contact which also has a double structure, crimping is faster and easier than soldering. Because it will be.

On the other hand, in recent years, electronic endoscopes with a built-in COD at the tip of the insertion tube have become widely used.
Various signals such as DC signals, AC signals, and high-frequency signals are transmitted through electric wires that electrically connect the video processor equipped with a signal processing system. Naturally, high-frequency components affect the signal as noise, so shielded wires are used for the high-frequency signal wires. Therefore, the electric wires connecting the COD and the video processor include a mixture of solid wires and shielded wires. Similarly, for the electrical connector installed between the COD and the video processor, single contacts and shield contacts coexist in one insulator.

In electrical connectors that have a mixture of contacts like this, it takes time to remove the wire from non-removably fixed contacts, but it is easy to remove removably-attached contacts from the insulator. be.

On the other hand, the internal conductor of the shielded wire is thin, and the internal contact of the shielded contact is rotatable relative to the external contact, so it is easy to disconnect from the internal conductor. In other words, compared to other single contacts, shield contacts are more likely to break and need to be repaired more frequently.

[Problems to be Solved by the Invention] Conventionally, no consideration has been given to a layout of contacts that can effectively deal with the above-mentioned circumstances.

The present invention has been made in view of the above points, and an object of the present invention is to provide an electrical connector that is easy to repair.

[Means and effects for solving the problem] In the present invention, the insulator is laid out so that the removable contacts are placed on the outer periphery of the non-removable contacts. Since it is on the side, it is easy to repair.

[Example] Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIGS. 1 to 5 relate to the first embodiment of the present invention.
The figure is a sectional view showing the structure of the electrical connector of the first embodiment, FIG. 2 is a block diagram showing the overall configuration of the video endoscope device having the first embodiment, and FIG. 3 is a front view of FIG. 1. Figure 4 is a sectional view showing the structure of the shield contact part, Figure 5
The figure is an explanatory view showing how the shield wire fixing pipe is deformed by caulking.

As shown in FIG. 2, a videoscope device 1 equipped with a first embodiment includes a videoscope 2, a light source device 3 that supplies illumination light to the videoscope 2, and a videoscope 2 that supplies illumination light to the videoscope 2.
The video processor 6 includes a drive circuit 4 that applies a drive signal to the video processor 6, a signal processing circuit 5 that performs signal processing, and a color monitor 7 that displays the video signal output from the video processor 6.

The video scope 2 has an elongated insertion section 8, and a light guide 12 is inserted into the insertion section 8 and a universal cord 11 extending from the operation section 9. A connector 3 is provided, and by connecting the light source connector 4 of the scope connector 3 to the connector receiver 15 of the light source device 3, the white light of the light source lamp 16 is transmitted to the condenser lens 17.
The light is focused and irradiated onto the incident end face of the light guide 12.

The illumination light transmitted by this light guide 12 is irradiated from the mountain/river end face toward the subject in front. The illuminated object is imaged by the objective lens 18 attached to the tip onto the imaging plane of the CCD 19 disposed at its focal plane. Incidentally, a mosaic filter 21 is attached to the imaging surface of this CCD 19, and the mosaic filter 21 is divided into colors W, for example, R, G, and B.

The CCD 19 is connected to one end of a signal wire 22, which is connected to the insertion portion 8 and the universal cord 1.
1 and formed in the scope connector 13.
This leads to the scope-side electrical connector 23 of the embodiment. A VP side electrical connector receiver 25 attached to one side of the connection cord 24 can be connected to this scope side electrical connector 23.
This connection is made so that the VP side main electrical connector 26 attached to the other side of the card 24 can be connected to the electrical connector receiver 27 of the video processor 6.

Electrical connector holder 27 of the connection cord 24 [25° electrical connector 26 is connected to the scope connector 3 electrical connector 23 and the video processor 6 electrical connector 27]
By connecting to , a COD drive signal from the drive circuit 4 is applied to the CCD 19 , and a signal read from the CCD 19 is input to the signal processing circuit 5 . The signal processing circuit 5 then processes the signal, and the subject image is displayed in color on the color monitor 7.

Electrical connector receivers 25 attached to each end of the connection cord 24. Electrical connectors 26 are connected to electrical connectors 23. of the first embodiment at mounting rings 28.29, respectively. It can be attached to and detached from the electrical connector receiver 27.

The structure of the electrical connector 23 of the first embodiment is shown in FIG.

A flange portion 32 of a cylindrical mouthpiece 31 is fixed to a scope connector main body 34 with screws 33. A cylindrical insulating frame 35 is fitted into this base 31, and roughly this insulating frame 35
A guide member 36 is fitted inside.

A locking protrusion 3 is provided on the inner periphery of the guide member 36 from the rear end.
7 is formed and abuts on the protrusion 37 and a cover member 38,
The insulator 39 covered with the cover member 38 and the board 41 are stacked, and a board stopper 42 is inserted from the rear of the board 41.
It is screwed and fixed to the rear end of the guide member 36 at. During this screwing and fixing, the guide member 36 is fixed in a positioned state by the positioning pin 43 that is engaged with the base 31 and the insulating frame 35. In addition, when fixing with the board stopper 42, a watertight packing 44 is interposed between the outer circumference of the board stopper 42 and the inner periphery of the rear end of the base 31, and the board is clamped and fixed by the board stopper 42. Ru.

A cylindrical shield frame 45 is screwed onto the rear end of the board stopper 42 . At the rear end of this shield frame 45 is a signal wire 2.
The shield member 46 is fixed with screws 47.The signal wire 22 is also sandwiched between cushion members 48 and 48 in the shield member 46, and is further fitted with a cable stopper plate. 49 are overlapped and fixed with screws 51.

By the way, a plurality of holes are formed in the insulator 39, and single pin contacts 52, 52 . ... and the boss 53 are inserted and fixed irremovably with adhesive. Further, a shield contact 54 is detachably attached to this insulator 39. Single pin contact 52, boss 53, and shield contact 54 attached to this insulator 39
The arrangement is as shown in FIG.

In other words, there is a boss 53 in the center and single pin contacts 5 around it.
2.52. ... and these single pin contacts 52.5
2. Shield contact 54°54,... on the outer circumference side of...
This is the layout with the . Each single pin contact 5 above
Single wires 55 forming the signal wires 22 are connected and fixed to the rear ends of the wires 2 by soldering, respectively. Also, shield (
The coaxial) line 56 is connected to a shield contact 54 fitted into the insulator 39 .

In addition, in Fig. 3, the shield contact point is 54.54°...
A vent hole 61 is provided on the outer periphery on the opposite side, and a bore seat 62 that allows air to pass through but does not allow water to pass through is attached to the seat retainer ring 63, and this seat retainer ring 6
3 is fixed to the inculator 39 with a vent metal 64. In other words, this vent hole 61 is designed to not allow water to pass through, but to allow air to pass through. Therefore, a waterproof cap (not shown) is attached to the electrical connector 23, and air is sent into a vent fitting provided on the waterproof cap to pressurize the inside of the videoscope 2 so that it can be inspected for water leakage. In addition, in FIG. 3, PO is the vent 61, and the outermost contact point P
1. P2. P11. P12 is a single pin contact, P3~
PIO is the shield contact 54. Also, P1 inside this
Single bottle contacts 52 from 3 to P30 are arranged, and the center P31
is the boss 53.

Said single pin contact 52.52. ...and the boss 53,
It is soldered to the land portion of the board 41.

In addition, when connecting the single wire 55 to each single pin contact 52, the wiring work can be easily performed by starting before fitting the shield contact 52 attached to the outer circumferential side.

Incidentally, a cap pin 65 is provided protruding from the cap 31, and is used to determine the orientation during installation. Further, the guide member 36 is provided with a guide groove 36a as shown in FIG. 3.

By the way, the structure of the shield contact 52 is shown in FIG.

An outer conductor 67 is fixed to the outer periphery of the cylindrical insulating phase 66, and a support member 68 is fixed non-removably to the outer periphery of the outer conductor 67. An inner conductor 69 is fitted inside the insulating material 66, a support sleeve 71 is housed inside the rear outer conductor 67, and a shielded wire fixing pipe 72 is placed over the outer side of the outer conductor 67. These internal conductor 69, support sleeve 71, and (shielded wire) fixing pipe 72 are installed separately.

Therefore, the 1ijlit+l+ wire 56 in the signal wire 22
and preform the inner conductor 56b from the inner sheath 56a.
, and insert its tips into the four parts of the internal conductor 69,
Next, the inner conductor 69 is pushed into the insulating material 66 using the support sleeve 71. Although the inner conductor 69 can be attached to the insulating material 66, it cannot be removed.

Next, an external conductor 56d is exposed from the external sheath 56G, and this external conductor 56d is arranged around the outer circumference of the rear end of the external conductor 67, and the fixed pipe 72 is placed over the outside of the external conductor 56d as shown by arrows A and B.
The parts are caulked as shown in FIGS. 5(a) and (b). This crimping can be done only once, but since the area that can be crimped in one time is 50% to 90% of the entire circumference, some parts will be crimped and will not be visible.

Therefore, in this embodiment, in order to completely crimp, 82 locations A are crimped in the axial direction, and the crimped portions are shown in Fig. 5(a).
, As shown in (b), the direction is changed to caulk. As shown in Fig. 5, it is not necessary to swage.

In this way, the shield wire 56 is connected to the shield contact 54 in advance, and the mounting on the three insulators is performed after the single wire 55 is wired to the single pin contact 52 first. That is, after connecting the single wire 55 to the single pin contact 52, the shield contact 54 is fitted into the insulator 39.

In this case, the outer conductor 67 is provided with a gill-shaped elastic member 73, and this elastic member 73 is connected to the shield contact 51! When the insulator 39 is attached to the insulator 39 by inserting it into the hole, the insulator 39 will be deflated as it passes through the narrow part of the hole, but after passing through, the insulator 39 will expand due to its elastic force and will prevent it from being pulled out. Incidentally, a stop portion 74 is provided at the rear end of the support member 68 to cover the role of a stopper.

The internal conductor 56b is very thin, and the internal conductor 69 is made of insulating material 6.
6, the internal conductor 56b may break when the electrical connector 230 is repeatedly connected and disconnected, resulting in frequent failures. It is easy to repair.

The electrical connector 23 of this first embodiment can also be applied to an electrical connector 26 connected to the video processor 6 shown in FIG.

In addition to this first embodiment, it has the following effects.

When repairing the inner contact (failure due to disconnection, etc.), the outer wiring must be removed (3L), but since there is a contact on the outer periphery that is easy to remove (each contact), the repair time can be shortened.

The 4Sb shield contact 51I is mainly used for cables that transmit high frequency components, but by placing and covering the noise source at the outermost periphery, mutual influence can be minimized.

In the first embodiment, the electrical connector 23 (or 26) is applied to one of the electrical connector receivers 25 (or 27) to which the electrical connectors 23 (or 26) are connected, but the other, that is, the electrical connector receiver 25 (or 27) can also be applied. Moreover, the present invention can also be applied to these pairs.

FIG. 6 shows a videoscope device 81 to which the first embodiment of the present invention is applied.

In this embodiment, an external TV camera 85 having a TV camera 84 attached to the eyepiece 83 of a fiberscope 82 is used in place of the videoscope 2 of the first embodiment.

The fiberscope 82 is the same as the videoscope 2 in FIG. 2, in which the incident end face of an image guide 80 is disposed on the focal plane of the objective lens 18, and the image guide 80 provides an optical image on the exit end face on the eyepiece 83 side. is transmitted. An eyepiece lens 86 is disposed opposite to the output end surface of the image guide 80 of the eyepiece portion 83.
The optical image transmitted through the optical system can be observed with the naked eye.

When a television camera 84 is attached to the eyepiece 83, an optical image is formed on the CCD 88 by an imaging lens 87 facing the eyepiece 86.

A mosaic color filter 8 is provided on the imaging surface of this CCD 88.
9 is installation.

A light guide cable 91 is extended from the operation section 9 of the fiber path]-bu 82, and this light guide cable 9
Illumination light is supplied by connecting the light source connector 92 at the tip of the light source device 3 to the light source device 3.

On the other hand, a signal wire 94 is connected to the CCD 88 of the television camera 84, and this signal wire 94 is connected to a camera cord 95.
is inserted, and reaches a camera side electrical connector 96 attached to the tip of this camera cord 95. This camera-side electrical connector 96 is connected to the electrical connector receiver 2 of the video processor 6.
7, and has the same configuration as the first embodiment.

Incidentally, this electrical connector 96 can be attached to the VP side electrical connector receptacle 27 using a ring 97.

The rest of the structure is the same as that of the first embodiment, and is denoted by the same reference numerals.

FIG. 7 shows an image carrier 10 to which the first embodiment of the present invention is applied.
1 is shown.

Attached to the tripod 102 (the TV camera 103 that was pulled)
An objective lens 104 and a CCD 105 arranged on the focal plane of this objective lens 104 are housed, and this CCD 105
A signal wire 106 connected to the camera cord 107 is inserted through the camera cord 107. Note that the CCD 105 is equipped with a mosaic filter 108.

A camera-side electrical connector 109 having a structure similar to that of the first embodiment is attached to the tip of the camera cord 107 so that it can be connected to the electrical connector receiver 27 of the video processor I6.

FIG. 8 shows a second embodiment of an electrical connector 110 of the present invention.

This electrical connector 110 is a waterproof structure of the electrical connector 23 of the first embodiment.

The single pin contact 52, the post 53, and the vent metal 64 are connected to the board 41.
are soldered to the boss portions 111a, 111b, and 111C (see FIG. 10), respectively. A shielded coaxial line 56 is arranged on the shielded wire 54 and the single wire is wired to the single pin contact 52, and then the shielded contact 54 is fitted into the insulator 39. As shown in FIG. 9, the shield contact 54 is made by first applying a low viscosity silicon adhesive 112 to the fixing pipe 7.
The liquid is poured into the opening of No. 2, and is poured into the exposed portion of the internal conductor 56b, the tip of the internal coating 56a, and between the internal conductor 69 and the insulating material 66, and is allowed to solidify. Next, a highly viscous silicone adhesive 113 is poured into the opening of the fixed pipe 72 and hardened near the opening of the fixed pipe 72. The former waterproofs the internal conductor 56b and the internal coating 56a, and also substantially fixes the internal conductor 69 and the insulating material 66, making them unrotatable, so fixing the internal conductor 69 prevents the internal conductor 56b from breaking. It has the effect of effectively preventing.

The latter adhesive 113 is applied to the fixing pipe 72 and the outer covering 5.
It not only provides 6G waterproofing and waterproofing of the fixed pipe 72 and internal conductor 56b, but also serves as reinforcement when the shielded coaxial line 56 is pulled.

As shown in FIG. 8, a high viscosity silicone adhesive 113 is also poured between the shield contact 54 and the substrate 41 and hardened, and a high viscosity silicone adhesive 113 is also applied between the substrate stopper 42 and the substrate 41. Make it waterproof. Note that the space between the base 31 and the board stopper 42 is waterproofed with a gasket 43.

In this way, moisture entering through the opening of the cap 31 is waterproofed by the line between the cap 31, the board stopper 42, and the board 41.

A part of the shield contact 54 and the substrate 41 may be soldered (indicated by reference numeral 114 J") to prevent the adhesive 113 from peeling off due to slight movement of the shield contact 54 in the axial direction. However, in this case, the work of filling the adhesive inside the shield contact 54 may be performed after this half-opening. In this case, the part of the board 41 to which the shield contact 54 is soldered is As shown in FIG. 10, this can be done using partial lands 111d provided in the outer circumferential direction.

In this way, soldering can be carried out without increasing the distance between adjacent shield contacts 54, 54.

In addition, it is also possible to solder the entire circumference between the shield contact 54 and the board 41 and omit the adhesive for this part, but in this case, the shield contact 54 of the board 41 (=the land is soldered all around the J part) This requires a large distance between the shield contacts 54.degree. 5/4, which increases the size of the connector itself and makes it difficult to perform soldering work during removal.

For repair, remove the adhesive 113 poured between the shield contact 54 and the board 41, and remove the shield contact 54 with a jig while melting the solder. The jig is pipe-shaped, and the outer periphery is smaller than the enlarged part of the hole, and the inner diameter is larger than the outer diameter of the support member 68 for mounting the shield contact with three insulators.The jig is inserted from the left side in FIG. 73 so that the shield contact 54 can be pulled out to the right.

According to this second embodiment, even if the user accidentally submerges the scope in water without attaching the waterproof cap, it is possible to prevent water from entering the sniver, although this is not good for the electrical connector 110. .

By the way, when disinfecting or cleaning the screen 2 or television camera 84 shown in FIG. 2 or 6 by submerging it in liquid,
By attaching the waterproof cap 121 shown in FIG. 11 to the electrical connectors 23, 96, or both, it is possible to prevent water from entering these electrical connectors 23, 96. For example, the cap 31 of the electrical connector 23 has a cap pin 65 installed as shown in FIG. 1 or FIG.
When attaching the pull 25, attach the bayonet 1111 that is attached to the pull 28 so that it can rotate freely on the connector receiver 25.
This connector receiver 25 is fixed to the connector 23 by engaging with the connector 23. Similarly, as shown in FIG. 13, the electrical connector 96 is provided with a rotatable mounting ring 97.
The cap pin provided on the outer periphery of the VP side electrical connector receiver 27 is engaged with the bayonet groove 122 provided in the connector 7, thereby fixing the electrical connector 96 and the electrical connector receiver 27. The connector 23 is provided with a cap pin 65, and the electrical connector 96 is provided with a take-off ring 97 provided with a bayonet groove 122.

This waterproof cap 121 can be attached to both types of caps (for example, 31), and is provided with a bayonet @ 123 and a pin 124 for attachment.

FIG. 12 shows a view of attaching the waterproof cap 121 to the electrical connector 23 of the videoscope 2. As shown in FIG. 12, the cap pin 65 is engaged with the bayonet groove 123 and fixed. This waterproof cap As shown in FIG.
25a and elastic portion 125b are provided. This elastic part 1
25b is zero due to the repulsive force when the cap pin 65 is in the locking part 123a of the bayonet groove 123 (see FIG. 11).
The gold pin 65 is pressed against the locking portion 123a to rotate the waterproof cap 121 itself, and also serves as a click when the cap is attached.

FIG. 13 shows the waterproof cap 121 attached to the electrical connector 96. As can be seen from this figure, during installation, the no pin enters the bayonet groove 122 of the ring 97 and is fixed by the locking part.

When this waterproof cap 121 is attached to the electrical connector 23, the inner surface of this waterproof cap 121 and the electrical connector 23
When the waterproof cap 121 is attached to the electrical connector 96 (pull it), the outer surface of the waterproof cap 121 fits into the inner surface of the attachment ring 97.

In this way, attach the waterproof cap 121 to the videoscope 2.
By being able to use it for both the TV camera 84 and the TV camera 84, it is possible to eliminate the trouble of incorrect assembly by the user.

[Effects of the Invention] As described above, according to the present invention, since the removable contact is attached to the insulator in a non-detachable manner (=1t-1) and is disposed on the outer circumferential side of the contact, it is possible to prevent the insulator from becoming detachable due to repeated attachment and detachment. Removable contacts, which are more likely to fail than regular contacts, can be repaired more easily.

[Brief explanation of the drawing]

FIGS. 1 to 5 relate to the first embodiment of the present invention.
The figure shows the structure of the electrical connector of the first embodiment, a cross-sectional view, FIG. 2 shows the overall configuration of a videoscope device equipped with the first embodiment, and FIG. Figure 4 is a cross-sectional view showing the structure of the shield contact, Figure 5 is an explanatory diagram showing the state in which the fixing pipe placed outside the external conductor is caulked, and Figure 6 is a front view showing the arrangement of the contacts. FIG. 7 is an overall configuration diagram of a videoscope device to which the first embodiment is applied.
FIGS. 8 to 10 are general configuration diagrams of an imaging device to which the embodiment is applied, and FIG. 8 is a sectional view of an electrical connector of the second embodiment, and FIG. 10 is an enlarged rear view showing the arrangement of the contacts as seen from the board side of FIG. 8, and FIG. 11 shows the structure of the waterproof cap that can be attached to the first embodiment. Cross section, 1st
2 and 13 are cross-sectional views showing the waterproof cap shown in FIG. 11 attached to the electrical connector of a video scope and the electrical connector of a television camera, respectively. 1... Video scope device 2... Video scope 3... Light source device 4...
Video processor 5...Color monitor 22...Signal wire 23.26...Electrical connector 24...Connection cord 25.27...Electrical connector receiver 28.29...Mounting ring 2/1 Fig. 1 Procedures for correction <voluntary) 1. Display of case 1984 Patent Application No. 284109-2, title of invention Electrical Connector 3, person making amendment Relationship with the case

Claims (1)

[Scope of Claims] An electrical connector including an insulator, a non-removable contact on the insulator, and a removable contact on the insulator, wherein the removable contact is disposed on the outer periphery of the non-detachable contact. An electrical connector characterized by: