JP2013099397A - Electric connector device of endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector device of an endoscope excellent in appearance, hard to be a dirt collecting part, and excellent in detergency.SOLUTION: The outer periphery of a connector part support disk 14 is arranged to fit by insertion to the inner periphery of a distal end opening 12a of a housing 12 in a state not to project from the distal end opening 12a of the housing 12 to the exterior over the whole periphery, and an eave-shaped part 14a formed to extend from the outer edge of the connector part support disk 14 toward the housing 12 side is fitted in a recessed groove part 12b formed on the housing 12 side.

Description

  The present invention relates to an electrical connector device for an endoscope provided on the endoscope side in order to electrically connect an endoscope and an external device.

  In an electrical connector device for an endoscope, generally, a base portion of an electrical connector that is detachably connected to an external device is supported on a distal end opening portion of a cylindrical housing for covering a space in which an electrical wiring board is disposed. The outer edge part of the connector part support board is attached in the state which engages watertight over the perimeter. Constructing the electrical connector device of the endoscope in a watertight manner is necessary to prevent cleaning water or the like from entering the interior when disinfecting or cleaning after use of the endoscope.

  In addition, it is necessary to conduct a leak test to check whether pinholes or the like are generated in the endoscope and there is no risk of water leakage. In the leak test, an endoscope in which pressurized air is sent into the internal space is placed in water, and a method for checking whether there is any leakage of bubbles is adopted.

  Therefore, in the leak test, the space in the endoscope is pressurized to increase the internal pressure, and the housing tends to deform in the bulging direction. If the pressurized air leaks from between the outer edges of the tube, the leak test cannot be performed correctly.

  Therefore, at the engaging portion between the housing front end opening and the connector support plate, the connector support plate side is fitted to the outer periphery of the housing front end opening so that the housing front end opening cannot spread in the radial direction. The structure which joins is taken (for example, patent document 1).

JP 2005-87661 A

  FIG. 5 shows an electrical connector device of an endoscope described in Patent Document 1 and the like, and the inside of a circle is a partially enlarged view. In this configuration, the outer edge portion of the connector support plate 91 that covers the front end opening of the housing 92 covers the outer periphery of the front end opening of the housing 92 and is exposed over the entire circumference.

  In such a configuration, the boundary portion between the housing 92 and the connector support plate 91 is not only visually noticeable, but also has a step 93 (or a step can be easily formed) at the boundary portion. At the same time, there was concern that it would become a filth pool.

  An object of the present invention is to solve such a conventional problem and to provide an electrical connector device for an endoscope excellent in appearance and excellent in cleanability that does not easily become a waste accumulation.

  In order to achieve the above object, an electrical connector device for an endoscope according to the present invention is detachably connected to an external device at a distal end opening of a cylindrical housing for covering a space where an electrical wiring board is arranged. The outer edge of the connector support board that supports the base of the electrical connector is mounted so that it is watertightly engaged over the entire circumference, and the outer periphery of the connector support board is open at the front end of the housing on the entire circumference. The hook-shaped part that is fitted and arranged on the inner peripheral part of the front end opening part of the housing so as not to protrude outward from the part and that extends from the outer edge part of the connector part supporting board toward the housing side is provided on the housing side. It fits in the recessed groove part formed in this.

  Note that an O-ring that seals the engagement portion between the front end opening of the housing and the connector support plate is provided, and an O-ring mounting groove for mounting the O-ring is formed on the outer peripheral portion of the connector support plate. Good.

  Moreover, the cross-sectional shape of a housing and a connector part support board may each be circular, and the outer wall surface near the front-end | tip opening part of a housing may be formed in the smooth curved surface shape without a corner | angular.

  According to the present invention, the outer periphery of the connector support plate is fitted into the inner periphery of the front end opening of the housing so that the outer periphery of the connector support plate does not protrude outward from the front end opening of the housing. The flange-shaped part formed extending from the part toward the housing side is fitted in the recessed groove part formed on the housing side, so that an appearance without a step can be obtained, and also a filth reservoir It is possible to provide an electrical connector device for an endoscope that is difficult to become and has excellent cleanability.

1 is an overall external view of an endoscope according to an embodiment of the present invention. 1 is an external perspective view of an electrical connector device for an endoscope according to an embodiment of the present invention. It is side surface sectional drawing of the electrical connector apparatus of the endoscope which concerns on the Example of this invention. It is side surface sectional drawing which isolate | separates and shows the housing and connector part support board of the electrical connector apparatus of the endoscope which concern on the Example of this invention. It is a side view of the electric connector apparatus of the conventional endoscope.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows the overall configuration of the endoscope, and the base end of the flexible insertion portion 1 is connected to the lower end of the operation portion 2.

  A main connector portion 4 that is detachably connected to a video processor (not shown) is attached to the distal end of the connecting flexible tube 3 extending from near the upper end portion of the operation portion 2. In the main connector portion 4, a light guide connector 5, an imaging signal connector 6, and the like are arranged.

  At the distal end of the branch flexible tube 7 provided in a state of branching from the vicinity of the base of the connecting flexible tube 3, an external device (not shown) (for example, a confocal control processor for performing microscopic magnified observation) is provided. The 2nd connector part 10 connected detachably is attached.

  In this embodiment, the present invention is applied to the second connector portion 10. However, the present invention may be applied to the electric connector device of the endoscope provided for the main connector portion 4 or other purposes.

FIG. 2 is an external perspective view of the second connector portion 10, and FIG. 3 is a side sectional view thereof.
In the second connector portion 10, an electrical connector is detachably connected to an external device (not shown) in a distal end opening portion 12a of a cylindrical housing 12 for covering the space where the electrical wiring board 11 is disposed. The outer edge part of the connector part support board 14 which supports 13 base parts is attached in the state which engages watertight over the perimeter.

  The cross-sectional shapes of the housing 12 and the connector portion support board 14 are each circular. However, a cross-sectional shape other than circular may be used. Reference numeral 15 shown in FIG. 2 denotes an engaging pin that engages with a guide groove on the side of the external device (not shown).

  As shown in FIG. 3, the electrical connector 13 is provided with a large number of contact pins 13a for electrical connection with the external device side. The contact pin 13 a is electrically connected to the wiring on the electric wiring board 11. When the external device is a confocal control processor, the end of the laser beam transmission fiber and the like are also arranged in the electrical connector 13.

  The electrical wiring board 11 arranged in a state surrounded by the housing 12 is attached to the frame frame 15. The electrical connector 13 and the frame 15 are integrally fixed by a fixing nut 16 with the connector support board 14 sandwiched therebetween.

  The end of the branch flexible tube 7 is connected and fixed to the cylindrical member 17 fixed to the other end of the frame 15 with a screw, and the housing 12 is formed on the outer periphery of the end of the cylindrical member 17. A pressing ring 18 made of stainless steel that is screwed to the male screw is pressed against and fixed to the flange-shaped protrusion 17a formed on the cylindrical member 17. A wiring or the like extending from the electric wiring board 11 is inserted into the branch flexible tube 7.

  As shown enlarged in the circle of FIG. 3, the outer peripheral portion of the connector portion support board 14 is not projected to the outside from the front end opening portion 12 a of the housing 12 on the entire circumference. It is inserted and arranged in the inner periphery.

  In addition, an O-ring 19 is provided for sealing an engagement portion between the front end opening 12a of the housing 12 and the connector support board 14, and an O-ring mounting groove 20 in which the O-ring 19 is mounted has a connector support board. 14 is formed all around the outer periphery.

  The outer wall surface in the vicinity of the front end opening 12a of the housing 12 is formed into a smooth curved surface with no corners. As a result, the second connector portion 10 of the present invention can obtain a smooth and streamlined appearance without a sense of unevenness, and it is difficult to become a filth reservoir and has excellent cleaning properties and the like. .

  In addition, a flange-shaped portion 14a formed to extend from the entire circumference of the outer edge portion of the connector portion support board 14 toward the housing 12 is fitted into a recessed groove portion 12b formed on the entire circumference on the housing 12 side. Yes.

  As a result, during the leak test, even if the internal space of the endoscope is pressurized to increase the internal pressure of the second connector portion 10 and the housing 12 is deformed in the bulging direction, the distal end opening portion 12a of the housing 12 In the engaging part with the connector part support board 14, the front-end | tip opening part 12a of the housing 12 does not spread in radial direction, and an air leak does not generate | occur | produce from the inside of the 2nd connector part 10. FIG.

  FIG. 4 shows the housing 12 and the connector support plate 14 separated as described above, and 21 and 22 position the housing 12 and the connector support plate 14 in the direction around the axis. Therefore, the key groove and the convex portion are engaged to restrict relative rotation.

  In addition, this invention is not limited to the said Example, Various embodiments other than having illustrated as an Example can be taken.

DESCRIPTION OF SYMBOLS 10 2nd connector part 11 Electric wiring board 12 Housing 12a Tip opening part 12b Groove part 13 Electrical connector 14 Connector part support board 14a Gutter-like part 19 O-ring 20 O-ring mounting groove

Claims (4)

The outer edge of the connector support board that supports the base of the electrical connector that is detachably connected to the external device is attached to the front end opening of the cylindrical housing for covering the space where the electrical wiring board is arranged. With a configuration attached in a state of watertight engagement over
The outer peripheral part of the connector part supporting board is fitted and arranged in the inner peripheral part of the front end opening part of the housing so that the outer peripheral part of the whole part does not protrude outside from the front end opening part of the housing. An electric connector device for an endoscope, wherein a hook-shaped portion formed to extend from the portion toward the housing side is fitted into a concave groove portion formed on the housing side.   An O-ring that seals the engagement portion between the front end opening of the housing and the connector support plate is provided, and an O-ring mounting groove for mounting the O-ring is formed on the outer peripheral portion of the connector support plate. The endoscope electrical connector device according to claim 1.   The electrical connector device for an endoscope according to claim 1 or 2, wherein each of the housing and the connector support board has a circular cross-sectional shape.   The electric connector device for an endoscope according to any one of claims 1 to 3, wherein an outer wall surface in the vicinity of the distal end opening of the housing is formed into a smooth curved surface without corners.

Images