JPH0966024A - Connector device for electronic endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a connector device itself light in weight and compact and to easily provide air-tight structure by providing a base part, where a fitting groove is formed in the shape of loop, and a case body to be joined with the base part by fitting a main body frame and fitting projections with the fitting groove. SOLUTION: A fitting groove 32 is formed in the shape of loop along the outer periphery of a fitting surface S of a base part 12, and an O ring 33 is arranged on the inner surface on the base part center side in this groove. Further, loop-shaped fitting projections 34 to be fitted with the fitting groove 32 are formed around an opening part 26A of a case body 34. Since these fitting groove 32 and the fitting projections 34 are fitted together, even when prescribed inner pressure is applied to the joined case body 26, the case body 26 is not expanded outside and strength sufficiently immune to outer pressure can be kept without fail.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector device for an electronic endoscope, and more particularly to the structure of a connector device for connecting an electronic endoscope as a scope to a light source device or a processor device.

[0002]

2. Description of the Related Art FIG. 5 shows the overall structure of an electronic endoscope apparatus, which is a distal end portion 1 of an electronic endoscope 1 which is a scope.
A is provided with a CCD which is a solid-state image sensor. In the electronic endoscope 1, a signal line for driving the CCD to obtain a video signal is arranged up to the distal end portion 1A, and a light guide for supplying light for observation is arranged. . Further, as shown in the figure, a cable 2 is provided from the operation unit 1B of the electronic endoscope 1 to the connector device 3, and the connector device 3 is connected to the light source device 4. Further, the connector device 3 is provided with a cable 5 up to the connector 6, and the connector 6 is connected to the processor device 7.

Then, the light guide is connected to the cable 2.
It is arranged inside and is connected to the light source device 4 via the connector device 3, whereby the light output from the light source device 4 is transmitted to the tip portion 1A. Further, the signal line passes from the cable 2 into the connector device 3, is arranged in the cable 5, and the processor device 7 via the connector 6.
The video signal can be output to the processor unit 7. Further, a circuit for driving the CCD arranged at the distal end portion 1A under the control suitable for each electronic endoscope 1 is also housed in the connector device 3, and the connector device 3 is a light source. In addition to connecting and arranging the guides and signal lines, they also serve to house the circuit members.

[0004]

However, in the above-mentioned electronic endoscope connector device, the thickness of the main body case is increased in order to have strength for holding both the cable 2 and the cable 5. There is a problem that the connector device 3 itself becomes heavy. Further, in the electronic endoscope, the connector device 3 also employs an airtight structure, but there is a problem that it is difficult to achieve this airtightness.

FIG. 6 shows a case of the connector device 3 which is composed of a case body 3A and a lid 3B each having an opening on a side surface having the largest area in a shape similar to a rectangular parallelepiped. Composed. An O-ring 8 is arranged around the opening of the case body 3A, and the lid 3B is screwed and fixed through the screw hole 9 of the opening and the mounting hole 10 of the lid 3B. It has become. However, in the case body 3A described above, since the lid 3B is placed on the side surface opening, the airtight state may not be maintained in some cases depending on how the screws are attached.
Further, since the lid 3B is attached to the side surface having the largest area, the outer peripheral distance of the connection between the case body 3A and the lid 3B becomes long, which may make it difficult to ensure airtightness.

The present invention has been made in view of the above problems, and an object thereof is to make an apparatus itself light and compact, and to use an airtight structure easily for an electronic endoscope. It is to provide a connector device.

[0007]

In order to achieve the above object, the present invention provides an electronic endoscope which is provided at an end portion of a cable of an electronic endoscope and is connected to a connecting portion on the side of a light source device or a processor device. In a connector device for a mirror, a base portion in which a connecting portion on the electronic endoscope side is arranged and a mounting groove is formed in a ring shape along an outer periphery on a mounting surface on a cable arranging side, and the mounting surface of the base portion has a virtual A frame in which a side surface of the rectangular parallelepiped and one of the upper and lower surfaces connected to this side surface are excluded is attached by three-point support, and a metal main body for attaching and supporting the above cables and accommodating and arranging necessary members. An annular fitting that is integrally formed in a shape that covers the main body frame while providing an opening portion on the mounting surface side of the base portion and the base portion, and that fits in a mounting groove of the base portion around the opening portion. Kiga formed, characterized in that the engagement protrusion configured to include a a case body which merge into the base portion by fitting to the attachment groove.

[0008] According to the action described above, since the metallic body frame is disposed, it is possible to reduce the wall thickness of the case body, and by the main body frame 3 point support, for example, the side surface and the lower surface of the 2 Since the surface is open, the light guide, the signal line or the circuit board can be easily arranged. Further, since the opening of the case body is on the base side and the base and the case body are united by the fitting of the annular mounting groove and the annular fitting protrusion, there is an advantage that the airtightness of the connector device can be easily obtained. .

[0009]

1 to 4 show a connector device for an electronic endoscope according to an embodiment of the present invention, and FIG. 3 shows the inside of the assembled connector device. FIG. 4 is a diagram showing a joint structure of a base and a case body. As shown in FIGS. 1 and 2, a connecting portion (fitting portion) 13 for connecting to a connector receiving portion on the light source device side of a base portion 12 made of synthetic resin.
Is provided, and the light guide end 14 </ b> A is arranged so as to project from the connecting portion 13. A screw 17 and a nut 18 are provided so that the body frame 16 as shown in the drawing is supported at three points P1, P2, and P3 on the mounting surface S on the cable arranging side of the base 12 opposite to the connecting portion 13. It is attached.

The main body frame 16 does not have a lower left side support portion in FIG. 1 and has a shape in which the left side surface and the lower surface of the virtual rectangular parallelepiped are eliminated, thereby forming an open space 100. In addition, 2 is provided on the rear side of the body frame 16.
Ring 2 for arranging two cables (the cable inner cylinders 20 and 21 of FIG. 2 and the cable jacket 38 of FIG. 3)
2 and 23 are attached to this ring 22, 23
A male screw portion NA is formed on each of these. According to such a body frame 16, the mounting rings 22, 23
It is possible to arrange a light guide and a signal line inside the connector, and to fix a circuit board and the like to the frame 16. The box-shaped high-frequency shield body 22 shown in the figure is arranged so as to cover the internal circuit member from the open space 100 (insulated from the main body case 16) after the necessary arrangement is completed.

Further, there is provided a case body 26 made of synthetic resin having a size to cover the body frame 16, and the case body 26 is integrally formed by forming an opening 26A on the base 12 side. That is, the case body 26 is a rectangular parallelepiped similar to the above-mentioned virtual rectangular parallelepiped,
Also in this example, the surface having the largest area is arranged on the side surface side, and the opening 26A is provided on the surface having the smaller area. Then, on the opposite side of the opening 26A, the cable inner cylinders 20, 21 are provided.
And mounting holes 27 and 28 for fixing the case body 26 to the body frame 16 are formed. The case body 26 is fixed by fixing rings 29 and 30 having female threaded portions NB which are screwed into the male threaded portions NA of the mounting rings 22 and 23.

FIG. 4 shows the above-mentioned base 12 and case body 26.
An enlarged view of the joining structure of the union part of FIG.
A mounting groove 32 is formed in an annular shape along the outer periphery of the mounting surface S of the above, and an O ring 33 is arranged on the inner surface of the mounting groove 32 on the center side of the base. On the other hand, the opening 26 of the case body 26
An annular fitting protrusion 34 that fits into the mounting groove 32 is formed around A. With such fitting of the mounting groove 32 and the fitting protrusion 34, even if a predetermined internal pressure is applied to the united case body 26, the case body 26 does not bulge outward, and of course against external pressure. The strength that can withstand is maintained. Therefore, compared with the conventional lid type as shown in FIG. 6, there is an advantage that airtightness is kept good.

Although the connector device has the above-described structure, as shown in FIGS. 1 and 2, the main body frame 16 is supported at three positions P1, P2, and P3, and the open space 1 is provided.
Since 00 is provided, there is an advantage that the work of storing and arranging various members becomes easy. In this example, as shown in FIG. 3, the light guide 14, the signal line 36, the circuit board 37, and the like are arranged. Then, after these members are arranged and the cable inner cylinders 20 and 21 are mounted, the case body 26 is arranged from the opening 26A toward the base portion 12, and the case body 26 is fitted into the mounting groove 32 of the base portion 12. By fitting the protrusions 34, the case body 26 is
Be merged into.

In such a state, the fixing rings 29, 30
Through the mounting holes 27, 28 for mounting rings 22, 2
If it is screwed and fixed to 3, the case body 26 becomes the main body frame 16
And fixed to the base 12. Then, as shown in FIG. 3, the cable jacket 38 is covered on the cable inner cylinders 20 and 21 and the mounting rings 22 and 23 to complete the assembly.

As described above, the opening 26A of the case body 26 is joined to the mounting surface S of the base portion 12, and the fitting protrusion 34 is fitted into the mounting groove 32 to fit the base portion 12 and the case body 2 together.
By combining 6 with each other, a strong bonded state can be obtained against internal pressure (applying a predetermined internal pressure of F at the time of inspection) and external pressure, and the airtight state can be maintained well. Further, in the connector device in which the side surface has the largest area in the rectangular parallelepiped, in this example, since the base portion 12 and the case body 26 are united by the surface having a small area, as compared with the structure of FIG. 6 in which the lid is provided on the side surface side, Since the outer peripheral distance of the joint becomes shorter,
There is also an advantage that airtightness can be easily obtained.

In the above example, the connector device connected to the light source device side has been described in which two cables are connected. However, the present invention connects to a connector device for connecting one cable or a processor device. The same can be applied to the connector device.

[0017]

As described above, according to the present invention,
A base portion in which an attachment groove is formed in an annular shape along the outer periphery of the attachment surface on the cable arranging side, and the attachment surface of this base is made of a metal that is supported at three points with the side surface and the lower surface of the virtual rectangular parallelepiped being excluded. The main body frame and the base part are integrally formed in a shape that covers the main body frame while providing an opening on the mounting surface side of the base part, and an annular fitting protrusion that fits into the mounting groove of the base part is formed around the opening part. Since it is configured to include the case body, the device itself is light,
There are advantages that it can be made compact and that an airtight structure can be easily taken.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a connector device for an electronic endoscope according to an embodiment of the present invention.

FIG. 2 is a view showing a side surface of the connector device of FIG. 1 and a cross-sectional view of a case body.

FIG. 3 is a cross-sectional view showing a state in which the connector device of FIG. 1 is assembled.

FIG. 4 is a cross-sectional view showing a structure of a united portion of a base portion and a case body in the embodiment.

FIG. 5 is a perspective view showing an overall configuration of a conventional electronic endoscope apparatus.

6 is an exploded perspective view showing a structure of a case of the connector device of FIG.

[Explanation of symbols]

 12 ... Base, 16 ... Main body frame, 22, 23 ... Mounting ring, 26 ... Case body, 29, 30 ... Fixing ring, 32 ... Mounting groove, 34 ... Engaging projection, 100 ... Open space, P1, P2, P3… Mounting position.

Claims (1)

[Claims] 1. A connector unit for an electronic endoscope, which is provided at an end of a cable of an electronic endoscope and is connected to a connecting unit on a light source device or a processor unit side, wherein a connecting unit on the electronic endoscope side is arranged. And a base portion in which a mounting groove is formed in an annular shape along the outer periphery of the mounting surface on the cable arrangement side, and on the mounting surface of the base portion, one of the side surface of the virtual rectangular parallelepiped and the upper and lower surfaces connected to this side surface is formed. The frame in the removed state is attached by three-point support, and while the cable is attached and supported, a metal main body frame for accommodating and arranging necessary members and an opening portion on the attachment surface side of the base portion are provided. , Is integrally formed to cover the main body frame, and an annular fitting protrusion is formed around the opening so as to fit into the mounting groove of the base. The fitting protrusion is fitted in the mounting groove. A connector device for an electronic endoscope, characterized in that the connector device includes a case body that is combined with a base portion by being made to move.