JPH1131548A - Electrical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connector, which can reduce the number of part items and which is manufactured at a low cost and of which reliability is easy to be secured. SOLUTION: An insulating part 34B for insulating a metal cylindrical base 35, which is arranged in an outermost periphery, and a metal cylindrical guide member 31, which is arranged inside of the base 35, from each other and an insulator part 34A for insulating a single contact pin 39 for holding are integrally formed, so as to form an insulator 34 of insulator forming members. With this constitution, the number of part items is reduced, is mold easily manufacturable, and reliability is easily secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connector provided at an end of a cable of an electric device and connecting a plurality of electric contacts.

[0002]

2. Description of the Related Art Generally, in electric equipment, a signal or driving power can be supplied through an electric connector provided at an end of a cable. As this electric connector, one having a structure in which an electric contact is attached to an insulator is widely used.

For example, electronic endoscopes having a solid-state image pickup device such as a CCD at the tip of an insertion section are becoming widely used, and this CCD and a video processor having a signal processing system are electrically connected. Wires that transmit various signals such as a DC signal, an AC signal, and a high-frequency signal are used for the cable connected to the power supply.

In this case, since the high frequency component affects other signals as noise, a coaxial line having a shield structure is used for the electric wire for the high frequency signal. Therefore, CCD
A single wire and a coaxial wire are mixed in the electric wire connecting the cable and the video processor, and the single contact and the shield contact are similarly mixed in one insulator for the electric connector provided between the CCD and the video processor. Will be.

[0005] As a conventional example of an electrical connector used for connecting such an electrical device, there is one disclosed in Japanese Patent Application Laid-Open No. 2-129872. This Japanese Patent Laid-Open No. 2-129
In JP 872, as shown in FIG. 1 of the publication, an insulating frame provided between a base and a guide member is provided separately from an insulator for insulating and holding a contact pin.

[0006]

In the structure of the prior art described above, the same parts for the purpose of insulation, that is, an insulator for insulating between the pins and an insulator for insulating between the base and the guide member, are nearby. However, there are disadvantages in that they are separate units, have a large number of parts, have a complicated structure, and have a high manufacturing cost. Also, the structure becomes complicated and the number of assembling steps is large, so that it is difficult to ensure the reliability.

(Object of the Invention) 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 which can reduce the number of parts, reduce the manufacturing cost, and easily secure reliability. .

[0008]

According to the present invention, an insulating member for insulating a base to which the other electrical connector is connected and a guide member provided inside the base and an insulator for insulating and holding a plurality of electrical contacts are provided. Integrally provided by insulator molding members, reducing the number of parts,
It is easy to assemble and improves reliability.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 4 relate to a first embodiment of the present invention, and FIG. 1 is a block diagram showing the overall configuration of a video scope apparatus having the first embodiment. 2
3 is a cross-sectional view showing the structure of the electrical connector according to the first embodiment, FIG. 3 is a rear view of FIG. 2, and FIG. 4 is a cross-sectional view showing the structure of a shield contact portion.

As shown in FIG. 1, an electronic endoscope apparatus or video scope apparatus 1 having the first embodiment supplies a video scope (electronic endoscope) 2 and illumination light to the video scope 2. Light source device 3 and video scope 2
The video processor 6 includes a drive circuit 4 for applying a drive signal to the CPU and a signal processing circuit 5 for performing signal processing, and a color monitor 7 for displaying a video signal output from the video processor 6.

The video scope 2 has an elongated insertion portion 8, and a light guide 12 is inserted into the insertion portion 8 and a universal cord 11 extending from the operation portion 9.
A scope connector 13 is provided at the tip of the universal cord 11. By connecting the light source connector 14 of the scope connector 13 to the connector receiver 15 of the light source device 3, the white light of the light source lamp 16 is condensed by the condenser lens 17 and applied to the incident end face of the light guide 12.

The illumination light transmitted by the light guide 12 is radiated from a light exit end face toward a subject in front. The illuminated subject is imaged by the objective lens 18 attached to the tip on the imaging surface of the CCD 19 disposed on the focal plane. Note that a mosaic filter 21 is attached to the imaging surface of the CCD 19, and separates, for example, R, G, and B colors.

The CCD 19 is connected to one end of a signal wire 22. The signal wire 22 is inserted through the insertion portion 8 and the universal cord 11, and is formed on the scope connector 13 of the scope of the first embodiment. Electrical connector 2
Reaches 3.

A connection cord-side electric connector receiver 25 attached to one of the connection cords 24 can be connected to the scope-side electric connector 23, and a connection cord-side electric connector receiver 26 attached to the other of the connection cords 24 is connected to a video. It is configured to be detachably connected to a video processor side (abbreviated as VP side) electrical connector 27 provided in the processor 6. The electrical connector 27 can have the same structure as the electrical connector 23.

The electrical connector receiver 2 of the connection cord 24
5, by connecting the electric connector receiver 26 to the electric connector 23 of the scope connector 13 and the electric connector 27 of the video processor 6, respectively, a CCD drive signal from the drive circuit 4 is applied to the CCD 19,
The signal read from 19 is input to the signal processing circuit 5. Then, signal processing is performed by the signal processing circuit 5 and the subject image is displayed in color on the color monitor 7.

An electric connector receiver 25 and an electric connector receiver 26 attached to each end of the connection cord 24 are detachably attached to the electric connector 23 and the electric connector 27 of the first embodiment by attachment rings 28 and 29, respectively. It is.

The electrical connector 23 according to the first embodiment
2 is shown in FIG. As shown in FIG. 2, the electrical connector 23 includes a connector body (or connector outer frame) 30.
To be fixed with fixing screws.

The electric connector 23 serves as a guide for connecting the electric connector receiver 25 shown in FIG. 1, and has a metal (specifically, stainless steel) guide member 31 formed in a cylindrical shape so as to be fitted therein. The front end of a substantially cylindrical metal (specifically, for example, copper) shield frame 32 is screwed onto a screw portion 31a provided on the inner peripheral surface at the rear end of the guide member 31, and is electrically connected. Have been. in this case,
The front end side of the shield frame 32 is enlarged in a trumpet shape and connected to the rear end of the guide member 31.

The guide member 31 is provided with a guide groove for positioning in the circumferential direction when the electric connector receiver 25 is connected. Pins (not shown) of the electric connector receiver 25 are arranged along the guide groove. It can be inserted.

In the vicinity of the rear end of the guide member 31, there is provided a hole 33 communicating the outside and the inside. An insulator 34 formed by pouring an insulator molding member through the hole 33 using a molding die (not shown) is used as a guide. It is formed integrally with the member 31. As the insulator molded member, a resin having good insulation (affinity) with a metal such as the guide member 31 or the like, for example, P
PS (polyphenylene sulfide) can be used.

A cylindrical base 35 made of metal (for example, stainless steel) is provided outside the insulator 34 formed on the outer periphery of the guide member 31.
The rear end of the base 35 and the insulator 34
In a state where the step surface of the base 35 is abutted and positioned, a screw portion 35a provided on a rear end outer peripheral surface of the base 35 is fixedly connected to the insulator 34 by screwing with a fixing ring 36, and further near the rear end of the base 35. The flange provided is abutted against the front end of the connector main body 30 and is fixed to the connector main body 30 with the fixing screw 37 in a state of being positioned.

A pin 38 for positioning in the circumferential direction is provided on the outer peripheral surface of the base 35. Guide member 31
A plurality of electrical contacts, more specifically, a plurality of single contact pins 39, posts 40, and shield contact pins 41 are arranged in the insulator 34 formed inside the vicinity of the rear end.

In this case, the plurality of single contact pins 39, the posts 40, and the shield contact pins 41 are arranged as shown in the drawing, and an insulator molding member is poured around the solidification and solidified to thereby insulate the insulator 34 with the insulator 34. It is in a state where it was done.

That is, the guide member 31, the single contact pin 39, the post 4
0, the shield contact pins 41 are positioned and fixed, and are molded with a poured insulator molding member, so that the plurality of single contact pins 39, the posts 40, and the shield contact pins 41 are insulated and held, and the plurality of An insulator portion 34A for fixing the single contact pin 39, the post 40, and the shield contact pin 41 in a watertight manner is integrally formed.

In this case, a ring-shaped space is provided between the inner peripheral surface of the molding die and the outer peripheral surface of the guide member 31, and the insulator molded member is poured into the cavity through the hole 33 and molded. An insulating portion 34 for insulating the guide member 31 and the base 35 over the entire outer periphery of the guide member 31
B is also integrally formed.

That is, in the present embodiment, the guide member 31, the single contact pin 39, the post 40, and the shield contact pin 41 are positioned and fixed in advance in the molding die when molding with the molding die. The plurality of single contact pins 3 can be formed by molding with the poured insulator molding member.
9, an insulator portion 3 for insulating the post 40 and the shield contact pin 41 and fixing the plurality of single contact pins 39, the post 40 and the shield contact pin 41 in a watertight manner.
4A and an insulating portion 34B that is formed in a ring-shaped gap between the guide member 31 and the base 35 attached to the outer peripheral side thereof and insulates the guide member 31 and the base 35 from each other. It is characteristic.

At some of the plurality of single contact pins 38, a single wire 43 inside a signal wire 42 is connected and fixed to the rear end by soldering. The coaxial wire 45 inside the signal wire 42 is connected and fixed to the shield contact pin 41 by soldering.

The signal wire 42 passes through a small opening of a shield member 47 fixed with screws 46 at the rear end of the shield frame 32, is sandwiched by cushion members 48, 48 outside the shield wire 32, and a wire stopper plate 49 is superposed. , And is wound in a ring shape near the outer peripheral surface of the shield frame 32.

An O-ring 52 is interposed between the outer peripheral surface of the insulator 34 at a portion adjacent to the fixing ring 36 and the inner peripheral surface of the connector main body 30.
A watertight structure is maintained between the electrical connector 23 and the electrical connector 23.

By the way, some of the single contact pins 39 need to electrically connect the single contact pins 39. Conventionally, a substrate is provided and a specific pin is soldered to a circuit on the surface thereof. However, in the present embodiment, a metal connection plate 54 having a hole through which the rear end of the pin is formed by pressing is provided, and is inserted between the pins as shown in FIGS. 2 and 3. The insulator 34 is provided on the rear end face and soldered thereto. The material of the connection plate 54 is, for example, copper.

In the present embodiment, the insulator 34 further includes a vent 55 for ventilating the inside and outside of the video scope 2 with contact pins (single contact pin 39, post 4).
0, a shield contact pin 41 is generically provided, and a ventilation sheet 56 (one that allows only air but not water) is provided in the ventilation hole 55 with a sheet holding ring 57.
Are adhesively fixed to the insulator 34 in a replaceable manner.

In the prior art, the shield contact pin 41 is replaceable. However, in the case of maintaining a watertight function, reliability is lacking. In this embodiment, the shield contact pin 41 is bonded and fixed to the insulator 34. ing.

For this reason, the structure of the shield contact pin 41 is such that an insulating material 62 is provided outside the inner conductor 61 as shown in FIG.
The external conductor 63 provided via the adhesive is fixed to the insulator 34 by an adhesive 64.

In this case, the outer conductor 63 has a flange 63a.
Is provided on the insulator 34.
a is formed from the front, and the flange 6
3a is fitted and fixed with an adhesive 64 in a positioning state in which it abuts against the bottom surface of the hole, so that a staying portion of the adhesive 64 is formed on the entire periphery of the brim portion 63a, and a watertight function is secured. It is fixed. The internal conductor 61 fitted inside the insulating material 62 is also fixed to the insulating material 62 by the adhesive 64.

That is, the outer peripheral surface of the inner conductor 61 is cut out to form a ring-shaped gap between the inner conductor 61 and the inner peripheral surface of the insulating material 62. The fixing portion 66 of the adhesive 64 is formed on the entire surface, and is fixed to the insulating material 62 while ensuring a watertight function.

In this case, a rectangular hole 67 is provided in the middle of the insulating material 62 at a position to be the rear end face of the insulator 34, and the inner conductor 61 is formed by cutting out an outer peripheral position facing the rectangular hole 67. A notch 61a is provided, and a U-shaped retaining member 68 is fitted into the rectangular hole 67 and the notch 61a to position and fix the insulating member 62 and the internal conductor 61.

That is, the outer conductor 6 is attached to the insulator 34.
3 is positioned and fixed by its flange 63a, and a rectangular hole 67 is formed as a through hole at the position of the rear end face of the insulator 34 in the middle of the insulating material 62 fitted from behind so as to be aligned with the rear end face of the outer conductor 63. And a notch 61 provided in the middle of the rectangular hole 67 and the internal conductor 61.
a of a U-shaped insulating material, for example, a retaining member 68 made of ceramics is inserted into the outer conductor 6 from the side.
3. Positioning of the insulating material 62 and the inner conductor 61, and since the outer width of the retaining member 68 is larger than the hole diameter of the rectangular hole 67 of the insulating material 62, the outer conductor 63, the insulating material 62,
Even if the inner conductor 61 is no longer fixed due to the deterioration of the adhesive 64, it is prevented from coming off the insulator 34.

Further, the retaining member 68 is formed so that the outer conductor 63 and the inner conductor 61 rotate so that the inner covering 45 a of the coaxial line 45 is rotated.
And the external conductor 45d are prevented from being cut.

The inner conductor 61 extends rearward from the rear end of the insulating member 62, and the tip of the inner conductor 45b exposed from the inner coating 45a of the coaxial line 45 is provided in a connection hole 61b provided in this portion. Is inserted and soldered.

The rear end of the insulator 34 to which the shield contact 41 is attached is formed so that the outer circumference is lowered by one step, so that the soldering iron can be used even when the outer conductor 63, the insulating material 62, and the inner conductor 61 are fixed to the insulator 34. Can be brought into contact with the rear end of the internal conductor 61. For this reason, the outer conductor 6 which has conventionally been replaced is
3, the insulating material 62 and the internal conductor 61 can be reused.

Further, a connecting pipe 71 previously passed through the coaxial line 45 is provided on the rear end of the outer conductor 63, an inner coating 45a is provided on the rear end of the connecting pipe 71, and a fixed pipe 72 is provided outside the connecting pipe 71. , The outer conductor 45d is sandwiched therebetween (therefore, the connection pipe 71 is electrically connected to the fixed pipe 72, and these are also electrically connected to the outer conductor 45d).

An insulating ring 73 is provided inside the connection pipe 71.
Are provided, and the connection hole 61b is provided so that the external conductor 63
The connection pipe 71 covers the vicinity of the rear end of the inner conductor 61 projecting rearward from the rear end of the internal conductor 61 in a state where the insulation ring 73 is interposed therebetween. A recess 7 is provided at the tip of the connection pipe 71.
A plurality of 1a are provided, and the rear end of the outer conductor 63 is press-fitted to ensure electrical connection.

The exposed outer conductor 45 d sandwiched between the connecting pipe 71 and the fixed pipe 72 is connected to the brass press-fixed fixing plate 74 which is bonded and fixed to the insulator 34 in advance, between the front end of the fixed pipe 72 and the rear end of the connecting pipe 71. Soldering is also used for fixing. Thus, the fixed pipe 72, the connection pipe 71, and the external conductor 63 have the same potential as the external conductor 45d, and a shielding effect is obtained.

An extension 7 is provided at a part of the rear end of the fixed pipe 72.
2a, the ferrite piece 75 previously passed through the coaxial line 45 is attached to the extension 72a with a silicone adhesive 7
It is fixed at 6.

The fixing plate 74 may be integrated by inserting and fixing it at the time of molding the insulator 34. The outer conductor 63 may be positioned and arranged in advance at the time of molding the insulator 34, and may be integrated by inserting and fixing. .

As shown in FIGS. 2 and 3, an R-shaped projection 77 is provided on the rear end side of the insulator 34 so that the solder does not flow to an unnecessary portion when the connection plate 54 and the single contact pin 39 are soldered. Is provided.

The portion for fixing the fixing plate 74 is as follows.
For example, the ribs are formed radially in five ribs, and have an overall strength UP.

Further, around the other single contact pin 39 which is not connected by the connection plate 54, a brass pressed ground plate 78 having a large number of holes and partially expanding in a fan shape is inserted. The ground pin 39a at the center as shown in FIG.
And soldered.

The ground pin 39a is connected to an overall shield wire for covering and shielding the single wire 43 and the like.
The occurrence of noise is prevented by the ground plate 78 having the potential of the overall shield line. The guide member 31
Is electrically connected to the overall shield line, and has the same potential as this potential.

The overall shield line is connected to the video processor 6
It is connected to the ground of the internal patient circuit and becomes the ground potential of the patient circuit. On the other hand, the base 35 disposed outside the guide member 31 is different from this potential, for example, 2
It is held at the ground potential of the next circuit. For this reason, the base 35 and the guide member 31 have a structure insulated by the insulating portion 34B.

With this configuration, according to the first embodiment, the insulating portion 34B for insulating and holding the base 35 and the guide member 31 insulated, and the insulator portion for insulating and holding a plurality of contact pins from each other. Since the insulator 34A is realized by the insulator 34 formed integrally with the insulator molding member, the number of assembly steps can be reduced to facilitate manufacture, and the number of parts can be reduced, thereby improving reliability and manufacturing. Cost can be reduced.

In particular, when forming the insulator 34, the single contact pin 39, the shield contact pin 41, the fixing plate 74,
Since the base 35 and the like can be fixed at a time, the number of assembling steps can be significantly reduced.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. If only the differences from the first embodiment are described, in the second embodiment, the resin of the insulator 34 forming the insulator portion 34A and the insulating portion 34B is formed of a transparent and strong epoxy resin. The rear end is provided with a step portion 81 having a step surface formed concentrically.

The insulator 34 is divided by the step 81, and a cylindrical pyramid-shaped holding member 82 made of the same transparent resin is provided with a plurality of single contact pins 39.
Are formed with holes for fitting. The shape of the post 40 and the single contact pin 39 is such that only a portion having a large outer diameter fits into the step portion 81.

In assembling, the single contact pin 39 and the post 40 are preliminarily applied to the holding member 82 with an adhesive such as an ultraviolet curable adhesive which is cured or solidified with light of a specific wavelength.
Into the hole formed in Insulator 34
A UV curable adhesive is applied to the hole into which the pin is inserted, and is also applied to the stepped portion 81 so that the insulator 34 and the holding member 82
After assembling, the contact pins are fixed by holding the holding member 82 and the insulator 34 at once.

At this time, the insulator 34 and the post 40
Because the maximum outer diameter of the is not overlapped, the irradiating ultraviolet rays create a shadow of the pin in front, so that solidification cannot be prevented.

Another difference is that the base 35 and the insulating portion 3
The method of fixing to 4B is not by a fixing screw, but by a fixing pin 83. Also, a plurality of snap-fit rods 84 are provided at the rear end of the holding member 82, and the spherical contact 85 provided on the side surface of the fixed pipe 72 is inserted and fitted to fix the shield contact pin 41.

The effect of the second embodiment is that the insulator portion 34A and the insulating portion 34B are connected to the insulator 3A.
4 is the same as in the first embodiment, except that the single contact pin 3 is formed using an ultraviolet-curing adhesive.
9. By fixing the post 40 to the insulator 34 (the insulator portion 34A), the contact pins can be fixed more reinforced than in the first embodiment, and the durability and reliability of the watertight function can be increased.

Further, the shape of the base 35 is simpler than that of the first embodiment, and can be manufactured at a low cost by, for example, making the shape close to that by cold forging and then processing it more precisely. Further, a sealing material 86 is applied between the contact pins on the front surface of the insulator 34 between the contact pins and cured by irradiation and curing.

The sealing material 86 ensures more watertightness. This may be a silicone adhesive.
In addition, a visible light curable adhesive or an electron beam curable adhesive that cures with visible light or an electron beam other than ultraviolet light may be used.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 6 shows a main part of the electrical connector according to the third embodiment. In the present embodiment, the resin forming the insulator 34 that integrates the insulating portion 34B and the insulator portion 34A is a liquid crystal plastic (more specifically, for example, Vectra of Polyplastics Co., Ltd.). Plastic can be plated, and an electric circuit 87 is formed at the rear end of the insulator 34 by electroless steel plating.

A single contact pin 39 is soldered to the electric circuit 87. Thus, the electrical circuit 87 conducts between the pins that need to be electrically connected. The filter 8 is provided in front of the ventilation sheet 56, that is, upstream of the ventilation air.
Reference numeral 8 is sandwiched between the insulator 34 and the sheet pressing ring 57, and is detachably attached (detachable) with a detachable means, for example, with a silicone adhesive or the like in a watertight structure.

Further, a conductor, for example, a stainless steel ring for preventing electric shock 89 is formed around the specific single contact pin 39 in the front of the U-shaped groove 90, and is inserted and molded integrally with the insulator 34 and fixed. To prevent electric shock due to careless contact with fingertips. A plurality of retaining holes 91 are formed in the side surface of the ring 89 so that the resin flows through the holes to prevent the resin from falling out.

This embodiment has the following effects. With such a configuration, even when contact pins that need to be conductive are separated, a circuit can be easily formed therebetween. Since the upstream filter 88 of the ventilation sheet 56 filters out dirt and dust in the air at the time of the EOG gas and the leak test, the relatively expensive ventilation sheet 56 can be prevented from being clogged and can be used for a long time. The use period can be extended as follows.

Further, since the filter 88 is merely sandwiched between the sheet holding ring 57 and the insulator 34, the filter 88 can be easily replaced. Also, a ring 89 for preventing electric shock
U-shaped groove 90 is provided with a ring 89 for preventing electric shock when the electric connector of the present embodiment comes into contact with water.
When it enters, it drains well and is easy to dry.

As a modification of the third embodiment, the ground plate 78 can be formed by copper plating instead of manufacturing a press plate. Also, as shown in FIG. 6, the ground plate 78 can be fixed by a snap fit 94 formed on the rear end surface of the insulator 34. Other methods of fixing the ground plate 78 include supersonic welding and fixing with a heat-resistant adhesive.

(Fourth Embodiment) In this embodiment, a connection pipe 71 and a fixed pipe 72 in a shield contact 41 are shown.
This corresponds to another embodiment in which the external conducting wire 45d is interposed between them. In the present embodiment, a bent piece 71b obtained by bending a part of each end of the connection pipe 71 and the fixed pipe 72,
72 b is provided so that the bent piece 71 b of the connection pipe 71 abuts on the fixing plate 74.

The bent piece 7 provided on the fixed pipe 72
2b, the bent piece 71b of the connection pipe 71 is inserted into the groove after bending the bent piece 72b.

The external conductor 45d is soldered between the two bent pieces 71b and 72b.
Other configurations are the same as those in the first embodiment, for example.

This embodiment has the following effects. First
In addition to the effects of the embodiment, the risk of disconnection when the external conductor 45d is sandwiched is smaller than when the external conductor 45d is sandwiched between the fitting portions of the ring. The fixed pipe 72 can be positioned by the bent pieces 71b and 72b, and the work of soldering is easy.

(Fifth Embodiment) The fifth embodiment shows another configuration in which the fixing plate 74 is integrally formed and fixed with the insulator 34. As shown in FIG. 8, the fixing plate 74 in the present embodiment is a substantially L-shaped plate as shown in FIG. 8A, and this fixing plate 74 is integrated with the insulator 34 as shown in FIG. Fixed.

In this case, the part to be insert-molded is L
The width is widened in a letter shape, and a retaining hole 95 is formed. Therefore, it is possible to effectively prevent the fixing plate 74 from falling off or falling down after the fixing.

For example, in the first embodiment,
When the insulator 34 for integrally molding the insulator portion 34A and the insulating portion 34B is formed by the insulator molding member, the electric contact such as the contact pin 39 and the guide member 3
The present invention also includes a case where at least one of the bases 35 and the base 35 are simultaneously inserted and molded. In addition, embodiments and the like configured by partially combining the above-described embodiments and the like also belong to the present invention.

[Supplementary Notes] (1) A cylindrical base, a cylindrical insulating member fitted on the inner peripheral surface side of the base, a guide member fitted on the inner peripheral surface side of the cylindrical insulating member, It is located inside this guide member,
An electrical connector comprising: an insulator formed integrally with the cylindrical insulating member; and a plurality of electrical contacts insulated and held by the insulator.

(1 ′) an insulator for insulating a plurality of electrical contacts, a contact fixed to the insulator,
A connection base provided outside the insulator, an insulation member inside the connection base and electrically insulating between the guide member, and a guide groove provided at the inside of the insulation member for connection. An electrical connector comprising: a guide member having the electrical connector, wherein the insulating member is provided integrally with the insulator. (2) At least one of the base, the guide member, and the electrical contact is formed in the cylindrical shape. The electrical connector according to (1), wherein the insulating member and the insulator are formed at the same time as being integrally formed. (3) The cylindrical insulating member and the insulator are formed of a material that transmits light of a specific wavelength, and at least one of the base, the guide member, and the electrical contact is cured by irradiation with the specific wavelength. (1) The electrical connector according to (1) or (2), wherein the tubular insulating member or the insulator is integrally fixed with an agent.

(4) The electrical connector according to (3), wherein the specific wavelength is ultraviolet light. (5) The electrical connector according to (3), wherein the specific wavelength is a visible light. (6) The electrical connector according to any one of supplementary notes (1) to (5), further comprising an energization preventing unit configured to prevent conduction between the plurality of contacts due to contact of a fingertip.

(7) The electrical connector according to (6), wherein the conduction preventing means includes a protruding pin that protrudes forward of the insulator from the plurality of contact points, inside the insulator. (8) The electric connector according to any one of supplementary notes (1) to (7), wherein an electric circuit is formed on a rear end surface of the insulator. (9) The electrical connector according to (8), wherein the electric circuit is formed at the same time when the insulator is formed.

(10) The rear end face of the insulator is formed stepwise, and the large-diameter portions of the electric contacts arranged at each step portion do not overlap with each other. The electrical connector according to any one of (1) to (2). (11) The electrical connector according to (2), wherein a portion of the outer surface of the insulator that comes into contact with water is sealed with a photocurable adhesive. (12) a vent that passes through the front end face and the rear end face of the insulator, and is disposed in front of or behind the vent;
It is provided with a gas permeable membrane that allows air to pass through without passing through water, a filter that is disposed in front of the passage membrane, and is provided detachably with respect to the insulator, and a detachable unit that attaches and detaches the filter to and from the insulator. The electrical connector according to any one of supplementary notes (1) to (11), characterized in that:

(Effects of Supplementary Notes 1 to 12) The number of parts is reduced, making assembly easier. 2. Can be cheap. 3. By reducing the number of parts, there is an effect that failures are reduced.

(13) In an electrical connector in which a plurality of contact pins for electrical connection are provided on an insulator, a material of the insulator for fixing the contact pins is a transparent material that transmits light of a specific wavelength, and An electrical connector characterized in that the contact pins are fixed using an adhesive that is cured or solidified by light. (14) The electrical connector according to supplementary note (13), wherein the specific wavelength is ultraviolet light. (15) The electrical connector according to supplementary note (13), wherein the specific wavelength is a visible light.

(Background of Supplementary Notes 13 to 15) (Prior Art) In Japanese Patent Application Laid-Open No. 2-129872, an epoxy adhesive is applied to the entire periphery of the contact pin, and the contact pin is bonded and fixed to the insulator. (Problems of the prior art) For this reason, there was a disadvantage that assembling took time. In addition, there is a disadvantage that drying takes time. For this reason, an object of the present invention is to provide an electrical connector that enables simple fixing and bonding of the contact pins.
3) to (15).

(Operation of Supplementary Notes 13 to 15) Since the insulator is a transparent material for a specific wavelength, the photocurable adhesive is easily cured, and the contact pins can be securely fixed. Since the shape of the insulator, the shape of the contact pins, and the layout facilitate the transmission of light, curing is ensured.

(Effects of Supplementary Notes 13 to 15) With an adhesive that cures at a specific wavelength, such as an ultraviolet curable type, it can be cured in 5 to 10 minutes, so that the assembling time can be shortened as compared with a normal epoxy adhesive. Also, if an ultraviolet-curing adhesive having a relatively low viscosity is used, the adhesive can be filled without any gap between the contact pin and the insulator, so that the strength and the life can be reduced.
P. In addition, high watertightness can be secured.

(16) An insulator provided at the end of a cable connected to the endoscope, through which air passes for checking the waterproof state of the endoscope, and an electrical contact for making an electrical connection. In the electrical connector for an endoscope provided in the above, a ventilation hole that passes through the front end face and the rear end face of the insulator, and a ventilation sheet or ventilation that is disposed in front of or behind this ventilation port and that allows air to pass through without passing through water. An electrical connector for an endoscope, comprising: a membrane; a filter disposed in front of the passage sheet and detachably provided to the insulator; and a detachable means for attaching and detaching the filter to and from the insulator.

(Background of Supplementary Note 16) (Prior Art) Japanese Patent Application Laid-Open No. 2-129872 discloses a ventilation sheet, but a single sheet without a filter. (Problems of the prior art) When the water leak inspection is repeated, dirt easily accumulates on the ventilation sheet and clogs in a short period of time.
For this reason, the configuration of Appendix 16 is provided for the purpose of providing an endoscope electrical connector having a configuration that can extend the time or period until clogging.

(Operation of Supplementary Note 16) A filter is provided on the upstream side of the ventilation sheet, and dirt in the air adheres to the filter, so that the ventilation sheet is hardly clogged. (Effect of Supplementary Note 16) Since the air in the room is dirty and becomes clogged during use, the time until the use can be extended. Further, since the ventilation sheet is more expensive than the filter, the replacement and repair cost can be reduced by making the filter detachable.

[0087]

As described above, according to the present invention, an insulating portion for insulating and holding between a base and a guide member and an insulator portion for insulating and holding a plurality of contact pins from each other are integrally formed by an insulator molding member. Since it is realized by an insulator formed in a simplified manner, it can be easily manufactured by reducing the number of assembly steps, and the number of parts can be reduced, so that reliability can be improved and manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a videoscope device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing the structure of the electrical connector according to the first embodiment of the present invention.

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a sectional view showing a structure of a shield contact portion.

FIG. 5 is a sectional view showing the structure of an electrical connector according to a second embodiment of the present invention.

FIG. 6 is a sectional view showing a main part of an electric connector according to a third embodiment of the present invention.

FIG. 7 is a sectional view showing a part of a shield contact of an electric connector according to a fourth embodiment of the present invention.

FIG. 8 is a diagram showing a state in which a fixing plate and an insulator are fixed to an insulator according to a fifth embodiment of the present invention.

[Description of Signs] 1 ... Video scope device 2 ... Video scope (electronic endoscope) 3 ... Light source device 4 ... Drive circuit 5 ... Signal processing circuit 6 ... Video processor 7 ... Color monitor 13 ... Scope connector 23 ... (Scope side) ) Electrical connector 24 ... Connection cord 25 ... VP side electrical connector receptacle 26 ... VP side electrical connector 27 ... Electrical connector receptacle 30 ... Connector body 31 ... Guide member 32 ... Shield frame 33 ... Hole 34 ... Insulator 34A ... Insulator part 34B ... Insulation Part 35 ... Base 38 ... Pin 39 ... Single contact pin 40 ... Post 41 ... Shield contact pin 42 ... Signal wire 43 ... Single wire 45 ... Coaxial wire 56 ... Ventilation sheet

[Procedure amendment]

[Submission date] February 12, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction contents]

An extension 7 is provided at a part of the rear end of the fixed pipe 72.
2a, the ferrite bead 75 previously passed through the coaxial line 45 is attached to the extension 72a with a silicone adhesive 7
It is fixed at 6.

Claims (1)

[Claims] 1. A cylindrical base, a cylindrical insulating member fitted on the inner peripheral surface side of the base, a guide member fitted on the inner peripheral surface side of the cylindrical insulating member, An electrical connector, comprising: an insulator disposed inside and formed integrally with the tubular insulating member; and a plurality of electrical contacts insulated and held by the insulator.