JPH0724653B2 - Connector device for endoscope - Google Patents

Description

TECHNICAL FIELD The present invention relates to an endoscope connector device that connects an endoscope body side and an endoscope control device side.

[Prior Art] In recent years, by inserting an elongated insertion portion into a body cavity, various internal medical treatments can be performed by observing organs and the like in the body cavity and, if necessary, using a treatment instrument inserted in a treatment instrument channel. Endoscopes are widely used.

This endoscope has an optical endoscope that transmits the target optical image from the observation window at the tip of the insertion section to the eyepiece section of the hand-held operation section, and visually observes the target optical image at this eyepiece section, and the tip of the insertion section. The target optical image is photoelectrically converted using a solid-state image sensor such as a charge-coupled device (CCD) provided inside the unit, and the photoelectrically converted electric signal is sent to the external image pickup control device via the operation unit on the side of the hand and is sent as a signal. Process and
There is an electronic endoscope that sends a video signal from the imaging control device to a monitor for visualization.

Each of the endoscopes is supplied with illumination light from a light source device provided outside the endoscope main body, and controls the brightness of the light source of the light source device or a flash or the like.

As described above, the endoscope device requires an endoscope control device including a light source device externally in addition to the endoscope body, and the both are detachably attached, for example, as disclosed in JP-A-62-34525. It is connected with the connector.

[Problems to be Solved by the Invention] A conventional connector as disclosed in JP-A-62-34525 has a structure in which a lid is directly tightened and fixed to a casing containing a connector body with screws or the like. There is. Therefore, stress due to screw tightening is applied to the casing,
It is necessary to make the casing strong so as to withstand the stress, and the thickness is made large with metal or the like to make it large and heavy.

The present invention has been made in view of these circumstances, and prevents external stress due to the tightening of screws from being applied to the outer casing that encloses the connector body, and enables the outer casing to be small and lightweight, and its material and It is an object of the present invention to provide an endoscope connector device having a large degree of freedom in design.

[Means for Solving the Problem and Its Action] In order to achieve the above object, the connector device for an endoscope according to the present invention is a connector device for detachably connecting the endoscope body side and the endoscope control device. There is a connector body and a casing that encloses the connector body, the lid body is abutted from both end sides of the casing to the connector body, and the lid body is fixed to the connector body by a fixing member,
A liquid-tight seal is provided between the casing and the connector body and between the casing and the lid by elastic sealing members.

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

1 to 8 relate to an embodiment of the device of the present invention. FIG. 1 is a vertical sectional view of a universal connector, FIG. 2 is a horizontal sectional view of the universal connector, and FIG. 3 is A- in FIG. A
2 is a sectional view taken along line BB in FIG. 2, FIG. 5 is a perspective view showing a base, FIG. 6 is a perspective view showing an index ring, and FIG. 7 is a whole endoscope apparatus. FIG. 8 is a side view showing a connecting portion between the electronic endoscope, the light source device, and the imaging control device.

The endoscope apparatus shown in this embodiment relates to an electronic endoscope apparatus, but the present invention is naturally applied to an optical endoscope apparatus.

As shown in FIG. 7, the endoscope device 20 includes an electronic endoscope 21.
And a light source device 40 for supplying illumination light to the electronic endoscope 21.
From the imaging control device 50, the imaging control device 50 that performs signal processing for the solid-state imaging device in the electronic endoscope 21, the signal cable 53 that connects the electronic endoscope 21 and the imaging control device 50, And a monitor 70 for displaying an observation line image.

The electronic endoscope 21 is provided with an elongated and flexible insertion portion 22, for example, and a large-diameter operation portion 23 is connected to the rear end of the insertion portion 22. A flexible universal cable 24 extends laterally from the operation section 23, and a universal connector 25 is provided at the tip of the universal cable 24. As shown in FIG. 2, this universal connector 25
An electric connector portion 30 is provided on the side portion of. In addition, the operation unit 23, the freeze or the like, the imaging control device
An operation unit switch 38 for controlling 50 is provided.

On the other hand, in the light source device 40, for example, on the left side of the front surface of the housing, as shown in FIG.
A light guide receiver 41 to which 25 can be detachably connected is provided. Further, the image pickup control device 50 is provided with a video connector 98 on the front left side of the housing, for example.

Further, the signal cable 53 has a curl cable 52, a scope-side connector 54 detachably connected to the electric connector section 30 is provided at one end of the curl cable 52, and the video connector is provided at the other end. A device-side connector 99 that is detachably connected to 98 is provided. And
The signal cable 53 includes an electric connector portion 30 of the universal connector 25 and a video connector 98 of the image pickup control device 50.
It is designed to connect with. Both the scope-side connector 54 and the device-side connector 99 have a waterproof structure outside the shell on the outer circumference of the insulator part. Also,
The connection portion between the curl cable 52 and the respective connectors 54 and 99, and the curl cable 52 itself have a waterproof structure.

A water supply tank 166 is removably arranged on the side of the light source device 40. Then, one end of a water supply tube 167 is connected to the water supply tank 166, and the other end of the water supply tube 167 is connected to a water supply cap 26 provided on the universal connector 25.

The universal connector 25 is constructed as shown in FIGS. In these drawings, reference numeral 1 is a connector case (casing), which is molded with plastic or the like, and the connector case 1 is provided with a first opening 27, a second opening 28, and a third opening 29. . This third
The base 2 shown in FIG. 5 is fitted in the opening 29, while the first main body block 3 and the second main body block 4 are fitted in the first and second openings 27, 28, respectively. The first body block 3 and the second body block 4 are in contact with the base 2, respectively. In this state, the first main body block 3 and the second main body block 4 are slightly projected from the first opening 27 and the second opening 28, respectively. And the base 2 and the first
The main body block 3 and the second main body block 4 form a connector main body.

The first lid 7 is provided on the first opening 27 side of the connector case 1.
However, when the second lid 8 is in contact with the first main body block 3 and the second main body block 4 on the second opening 28 side, the fixing screw 6
The connector case 1 is not stressed by the screwing of the fixing screw 6 at this time.

A support 17 is fixed to the tip side of the first lid 7 by means of a screw 31, and a light guide cap 16 is attached to the support 17.
While being screwed in and fixed liquid-tightly, a nut 15 having a reverse screw is screwed into the rear end of the light guide base 16 to prevent loosening. A fluid base 18 is screwed and fixed to the support 17 in a liquid-tight manner, and a connecting pipe 13 is provided between a rear end of the fluid base 18 and a receiving portion 32 of the first body block 3.
It is adapted to communicate with the first fluid passage 9 in the first main body block 3. A first connection mouthpiece 33 is provided in a liquid-tight manner on the rear end side of the first block 3 to communicate with the first fluid passage 9, and one end of the flexible tube 11 is connected to the first connection mouthpiece 33. Connected. In addition, on the outer periphery of this tube 11,
Flex 12 is packaged to prevent buckling. On the other hand, on the front end side of the second main body block 4, a second connection mouthpiece 34 communicating with the second fluid passage 10 in the second main body block 4 is provided in a liquid-tight manner and the other end of the tube 11 is connected. ing.

A second fluid passage is provided at the rear end of the second body block 4.
A connection mouthpiece 19 communicating with 10 is screwed and fixed, and a flexible tube 6 inserted in a universal cable 24 is connected to the connection mouthpiece 19. A series of fluid passages are formed by these.

The tube 11 is arranged along the groove 37 provided in the base 2, while the light guide bundle 14 installed in the universal cable 24 is provided in the first main body block 3 and the second main body block 4. The first through hole 35, the second through hole 36, the groove 39 provided in the base 2, and the light guide cap 16 provided in the first lid 7 are internally provided.
Further, the base 2 is internally provided with a partition tube 5, which defines a tube groove 37 and a light guide bundle groove 39, respectively. On the other hand, a C ring 42 is fitted on the outer peripheral surface of the first lid 7, and the C ring 42 is elastically engaged with the light guide receiver 41 of the light source device 40.

An electric connector portion 30 is arranged on the third opening 29 side of the connector case 1, and the electric connector portion 30 is fixed to the base 2 by a stopper screw 46. An electric wire 57 incorporated in the universal cable 24 and an end of an electric wire 58 from the connector contact are connected to a printed circuit board (not shown) inside the electric connector section 30. These wires 57,5
8 is a sufficiently long length, and the middle part is fastened at each of two places, and the electric wire between the fastening parts 51, 55, 51, 49 is the base of the former electrical connector part 30. It is wound around a shield tube 48 provided at the end, and the latter is folded in a meandering shape and is housed in the space 1a of the connector case 1. A shield plate 47 is attached to the tip of the shield tube 48, and the shield plate 47 and the shield tube 48 prevent noise from entering. The engaging portion 51 provided on the shield plate 47 and the engaging portions 49 and 55 provided on the base 2 are formed by a rubber plate and a pressing plate. Further, the electric wires 57 and 58 are arranged in the first electric wire insertion hole 44 and the second electric wire insertion hole 45 provided in the first main body block 3 and the second main body block 4, respectively.

The connector case 1 and the first main body block 3, the connector case 1 and the second main body block 4, the connector case 1 and the first lid body 7, the connector case 1 and the second lid body 8, and the fluid base 18
And connecting pipe 13, first lid 7 and support 17, connector case 1
An elastic packing P is interposed between the base 2 and the base 2 and between the electric connector portion 30 and the base 2, and is liquid-tightly sealed.

The second body block 4 has a bent pipe 60 and a stopper.
61 and 61 are integrally insert-molded. A suction mouthpiece 63 is screwed and fixed to one end of the bent pipe 60,
At the other end, a suction pipe line to which a suction tube 64 incorporated in the universal cable 24 is connected is formed. Suction base
A tube from a suction pump (not shown) is connected to 63, and suction can be performed by operating a suction button of the endoscope operation section 23.

The terminal receiving portion 65 formed on the second main body block 4 is connected to a terminal 66 connected to an electric wire incorporated in the universal cable 24. The terminal receiving portion 65 penetrates a part of the stopper 61. Further, the E terminal 62 is screwed into the stopper 61 to connect and fix the terminal 66.

On the other hand, the rear cylinder 67 is fixed to the other end of the second lid body 8 with a screw, and the rear end side of the universal cable 24 is fixed to the rear cylinder 67 with a screw. Are connected. Bend stoppers 69 are externally fitted to the other end of the second lid body 8, the rear cylinder 67, and the rear end side of the universal cable 24, and packing P is interposed between them to ensure liquid tightness. There is. The break stop 69 is formed by forming a break preventive rubber 79 on the break preventive insert 68 by, for example, lining molding. One end of the break-preventing rubber 79 is substantially in close contact with the universal cable 24, and protects the bending of the flexible universal cable 24 at the root portion.

With this configuration, when the universal connector 25 is connected to the light source device 40 or the like, an external force such as a tilt is applied to the folding stop 69 portion, the force is rear cylinder 67 → second lid 8 → fixing screw 6 → second.
The main body block 4 → the base 2 → the fixing screw 6 → the first main body block 3 → the first lid 7 → the support 17 → the light guide base 16 are transmitted, but the force is not transmitted to the connector case 1.

An index ring 59 is provided between the connector case 1 and the electric connector 30 on the side of the third opening 29. This index ring 59 is a notch formed in the connector case 1.
The convex index portion 56 formed on the index ring 59 is fitted and fixed in the index ring 16. This indicator ring 59
Is an index when connecting the scope-side connector 54 to the electric connector section 30. By fixing the electric connector section 30 to the base 2 with the fixing screw 46, the index ring 59 is also fixed at the same time. Further, there is an elastic member 176 between the index ring 59 and the flange portion of the electrical connector section 30, and when the electrical connector section 30 is fixed, the index ring 59 is pushed by the elastic force, whereby the index ring 59 It prevents backlash.

As shown in FIG. 3, a contact 71 to which an electric wire 58 is connected is liquid-tightly fixed to the first lid 7 via an insulating material 72.
The electric wires 58 are distributed along the groove 73 provided in the fixing screw 6 so that the openings of the first through hole 35 and the receiving portion 32 are not hindered.

As described above, since the electric connector portion 30 is fixed to the base 2, the force due to the attachment / detachment of the scope-side connector 54 with respect to the electric connector portion 30 is not applied to the connector case 1. Further, a name plate 74 is fixed to the upper side of the first lid body 7 with screws. Further, the tightening of the screw does not apply to the connector case 1. Since the name plate 74 is in the upward direction, it is easy to discriminate when the connector is attached to the light source device 40.

[Effects of the Invention] As described above, according to the present invention, the external casing that encloses the connector body is not subjected to external stress due to the tightening of the screws, and the external casing can be made compact and lightweight, and its material and design are free. It has the effect of increasing the degree.

[Brief description of drawings]

1 to 8 relate to an embodiment of the device of the present invention. FIG. 1 is a vertical sectional view of a universal connector, FIG. 2 is a horizontal sectional view of the universal connector, and FIG. 3 is A- in FIG. A
2 is a sectional view taken along line BB in FIG. 2, FIG. 5 is a perspective view showing a base, FIG. 6 is a perspective view showing an index ring, and FIG. 7 is a whole endoscope apparatus. FIG. 8 is a side view showing a connecting portion between the electronic endoscope, the light source device, and the imaging control device. 1 ... Connector case, 2 ... Base 3 ... 1st main body block, 4 ... 2nd main body block 6 ... Fixing screw, 7 ... 1st lid body 8 ... 2nd lid body, P ... Packing

Claims (1)

[Claims] 1. A connector device for detachably connecting an endoscope main body side and an endoscope control device, comprising a connector main body and a casing enclosing the connector main body, wherein both ends of the casing are provided in the connector main body. The lids are brought into contact with each other from the sides, and the lids are fixed to the connector body by a fixing member, and the casing and the connector body and between the casing and the lid are liquid-tightly sealed by elastic sealing members. A connector device for an endoscope, which is characterized in that