JP2007143821A - Control part housing of endoscope instrument and endoscope instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control part housing of an endoscope instrument which achieves safe working with the restriction of electric shock and electric discharge due to electrification by keeping electric charge from being accumulated between the control part and a worker. <P>SOLUTION: In a control part housing 8 of the endoscope instrument 1 which consists of a plurality of housing components made of a resin joined together to house a board and a frame for supporting the board inside, nickel plated work (electroconductive body) electrically connected to the ground is disposed on the outer surface of each of the housing components. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an operation unit housing of an endoscope apparatus and an endoscope apparatus.

In the case of an imaging apparatus such as a portable endoscope apparatus, the constituent members of the operation unit housing are made of resin for weight reduction. On the other hand, in order to protect the electronic components arranged in the housing, a conductor for blocking electromagnetic noise from the outside is arranged on the inner side of the operation unit housing (for example, see Patent Document 1). Further, in order to shield electromagnetic wave noise not only in the operation unit but also in the cable, the electromagnetic wave noise is shielded by a conductive film formed (for example, see Patent Document 2) or a connector which is a connection part with the cable. (For example, refer to Patent Document 3).
JP 2002-301022 A JP 2000-271122 A JP 2004-267488 A

  However, since the operation unit housing of the conventional endoscope apparatus has a conductor arranged inside the resin-made housing component member, the operator operating the operation unit is insulated from the operation unit housing. Therefore, static electricity is easily charged. Therefore, when an operator touches the conductor, an electric shock may be received due to the accumulated electric charge. At this time, a spark may occur, and the explosion-proof regulations cannot be satisfied as it is.

  The present invention has been made in view of the above circumstances, and is an internal view that can perform a safe work while preventing electric charge and discharge due to charging so as not to accumulate electric charge between an operation unit and an operator. An object of the present invention is to provide an operation unit housing for a mirror device.

The present invention employs the following means in order to solve the above problems.
An operation unit housing of an endoscope apparatus according to the present invention is an operation unit housing of an endoscope apparatus in which a plurality of resin-made housing components are joined, and a substrate and a frame that supports the substrate are accommodated therein. A conductor that is electrically connected to a ground is disposed on an outer surface of at least one of the housing components.
In addition, an endoscope apparatus according to the present invention includes an operation unit having an operation unit housing of the endoscope apparatus according to the present invention.

  In the present invention, when the operator touches the operation unit housing during work, the operator and the operation unit can be electrically connected to each other through the conductor disposed on the outer surface, and an electric charge is accumulated between the two. Can not be.

The operation unit housing of the endoscope apparatus according to the present invention is the operation unit housing of the endoscope apparatus, wherein the conductor is a conductive filler, a conductive metal, a conductive paint, a conductive plating, It consists of a combination of any two or more.
According to the present invention, the conductor can be easily arranged on the outer surface even if the housing component is made of resin.

Further, the operation unit housing of the endoscope apparatus according to the present invention is the operation unit housing of the endoscope apparatus, wherein a gripping part that is gripped by an operator during operation is arranged, and the conductor is the gripping part. It is provided in.
According to the present invention, the worker and the ground can be electrically connected and conducted simply by gripping the grip portion by the worker.

The operation unit housing of the endoscope apparatus according to the present invention is the operation unit housing of the endoscope apparatus, wherein the conductor is connected to a ground via the frame. .
According to the present invention, the conductor and the ground can be electrically connected without directly connecting the conductor and the ground.

  According to the present invention, it is possible to perform a safe operation by preventing electric charge and electric discharge due to charging by preventing accumulation of electric charge between the operation unit and the operator.

A first embodiment according to the present invention will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the endoscope apparatus 1 according to the present embodiment includes an insertion unit 2 that is inserted into an observation target (not shown), an operation unit 3 that is connected to the proximal end of the insertion unit 2, and A portable device body 6 provided with a display unit 5 and a cable 7 for connecting the device body 6 and the operation unit 3 are provided.

The insertion portion 2 is elongated and flexible, and an observation optical system (not shown) is disposed at the tip.
The operation unit 3 includes an operation unit housing (an operation unit housing of an endoscope apparatus) 8 formed by joining resin housing components 8A, 8B, and 8C. The operation unit housing 8 includes a joystick 10 for bending the insertion unit 2, a zoom button 11 for adjusting magnification, a brightness button 12 for adjusting brightness, a BOOST button 13 for adjusting black and white / color, and a display image. In addition to a stationary / record button 15 for performing recording, a gun grip-like gripping part 16 that is gripped by an operator during operation is arranged.

As shown in FIGS. 2 and 3, the housing components 8A and 8B are each formed in a halved shape, and a plurality of screw holes 17 through which assembly screws (not shown) can be inserted are arranged on the surface. Yes. The housing components 8A and 8B are fixed to each other via a plurality of screws, or are partially framed, in a state in which the housing components 8A and 8B are engaged with each other so as to be accommodated inside with a board 18 and a frame 18 supporting the board interposed therebetween 18 is fixed to a female screw portion 20 provided at 18.
The housing component 8C constitutes a portion where various operation buttons are arranged, and is connected to the housing components 8A and 8B by a plurality of screws.

  These housing components 8A, 8B, 8C are made of, for example, ABS resin, and nickel plating (conductor) is applied to the outer surface thereof. The nickel plating is arranged as electroless plating, and is also applied to the surface of the screw hole 17 provided in the housing components 8A, 8B, 8C. Therefore, by tightening the screws, the housing components 8A, 8B, 8C or the housing components 8A, 8B, 8C and the frame 18 are electrically connected.

As shown in FIG. 4, the frame 18 includes a first frame 18 and a second frame 18, and these are combined to form a box shape.
A ground contact 20 </ b> A to which a ground line (not shown) is connected is arranged on the frame 18, and is connected to a ground provided on the apparatus body 6 through a ground line in the cable 7. The ground contact 20A is one of the female screw portions 20. That is, when the operation unit housing 8 is assembled, the nickel plating applied to the outer surfaces of the housing components 8A, 8B, and 8C and the ground of the apparatus body 6 are electrically connected.

  The grip 16 is composed of housing components 8A, 8B, and 8C, and an elastomer 21 is disposed on the outer surface so that an operator can easily grip it.

  According to the operation unit housing 8 and the endoscope apparatus 1, when the operator touches the operation unit housing 8 at the time of work, the operator and the operation unit 3 are connected with each other through the nickel plating disposed on the outer surface. It is possible to conduct, to allow the charge to flow to ground, and to prevent the charge from accumulating between them. Accordingly, it is possible to perform a safe operation by preventing electric charge and discharge due to charging by preventing accumulation of electric charge between the operation unit 3 and the operator.

Next, a second embodiment will be described.
In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment mentioned above, and description is abbreviate | omitted.
The difference between the second embodiment and the first embodiment is that the elastomer of the grip portion in the operation unit housing of the endoscope apparatus according to the present embodiment is a conductive elastomer.

This conductive elastomer is in contact with the nickel plating disposed on the outer surfaces of the housing components 8A, 8B, and 8C, and is electrically connected to the ground of the apparatus main body 6.
According to the operation unit housing and the endoscope apparatus, the worker and the ground of the apparatus main body 6 can be electrically connected and conducted even when the worker grips only the grip portion.

Next, a third embodiment will be described.
In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment mentioned above, and description is abbreviate | omitted.
The difference between the third embodiment and the first embodiment is that the outer surface of the housing component in the operation unit housing of the endoscope apparatus according to this embodiment is subjected to conductive coating treatment instead of nickel plating. This is the point.

As the conductive paint, a paint to which conductive particles such as graphite, nickel, silver and copper are added is arranged.
According to the operation unit housing and the endoscope apparatus, the same operations and effects as those of the first embodiment can be achieved.

Next, a fourth embodiment will be described.
In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment mentioned above, and description is abbreviate | omitted.
The difference between the fourth embodiment and the first embodiment is that each housing component in the operation unit housing of the endoscope apparatus according to the present embodiment is made of a conductive resin mixed with a conductive filler. This is the point.

For example, a carbon fiber chip is used as the conductive filler. For this reason, not only the outer surface of each housing component but also the entire housing component has conductivity. Therefore, as in the first embodiment, the housing component and the ground are electrically connected via the screw.
According to this operation part housing and endoscope apparatus, the same effect as a 1st embodiment can be produced.

Next, a fifth embodiment will be described with reference to FIG.
In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment mentioned above, and description is abbreviate | omitted.
The difference between the fifth embodiment and the first embodiment is that the housing components 31A, 31B, 31C in the operation unit housing 31 of the endoscope apparatus 30 according to the present embodiment are different from the metal (conductor) 32. It is the point which was shape | molded integrally and exposed the metal 32 to some outer surfaces.

The metal 32 is disposed in the vicinity of the elastomer 21 of the gripping portion 16 so that when the operator grips the gripping portion 16, the metal 32 also contacts the metal. When the housing components 8A, 8B, and 8C are assembled into the operation unit housing 31, the metal 32 and the ground contact of the frame (not shown) are connected to be electrically connected to the ground. .
According to the operation unit housing 31 and the endoscope device 30, the same effects as those of the first embodiment can be obtained.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, even if the conductor is not disposed on the outer surface of the housing component of the operation unit housing, it is only necessary that the conductive elastomer is disposed on the grip portion. At this time, the worker can be brought into conduction with the ground by gripping the grip portion.

Further, in the third to fifth embodiments, not only the conductor is disposed on the outer surface of the housing component of the operation unit housing, but also a conductive elastomer is disposed on the grip portion. I do not care. In this case, similarly to the second embodiment, it is possible to improve the probability that the worker contacts the conductor, and to reduce the chance of charging to allow the charge to escape to the ground.
In the grip portion, the conductor may be disposed in a portion other than the portion where the elastomer is disposed.

  The resin constituting the housing component is not limited to the ABS resin, and may be any resin that can be plated or painted, for example, nylon, PP (polypropylene), PMMA (polymethyl methacrylate), PU (polyurethane). And plastics such as PC (polycarbonate), PBT (polybutylene terephthalate), PA (polyamide), PPO (polyphenylene oxide) (registered trademark), SPS (syndiotactic polystyrene) (registered trademark), PES (poly Super engineering plastics such as butylene succinate carbonate), PPS (polyphenylene sulfide), PEI (polyetherimide), LCP (polycyclohexylene, dimethylene, terephthalate), PC ABS, as long such special engineering plastics PC / ASA (acrylate styrene acrylonitrile).

  In this case, the plating material is not limited to nickel plating, but may be other nickel plating or chromium plating.

1 is a perspective view showing an endoscope apparatus and an operation unit housing according to a first embodiment of the present invention. 1 is an exploded view showing an endoscope apparatus and an operation unit housing according to a first embodiment of the present invention. FIG. 3 is an exploded view illustrating housing components of the operation unit housing according to the first embodiment of the present invention. It is a perspective view which shows the flame | frame accommodated in the operation part housing which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the operation part housing which concerns on the 5th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Endoscope apparatus 2 Insertion part 3 Operation part 8 Operation part housing 8A, 8B, 8C Housing component 16 Grip part 18 Frame

Claims (5)

In an operation unit housing of an endoscope apparatus in which a plurality of resin housing components are joined, and a substrate and a frame that supports the substrate are accommodated therein,
An operation unit housing for an endoscope apparatus, wherein a conductor electrically connected to a ground is disposed on an outer surface of at least one of the housing components.   The operation unit housing according to claim 1, wherein the conductor is made of a conductive filler, a conductive metal, a conductive paint, a conductive plating, or a combination of any two or more thereof. A gripping part that the operator grips during operation is arranged,
The operation part housing of the endoscope apparatus according to claim 1, wherein the conductor is provided in the grip part.   The operation unit housing of the endoscope apparatus according to any one of claims 1 to 3, wherein the conductor is connected to a ground via the frame. An endoscope apparatus comprising: an operation unit having an operation unit housing of the endoscope apparatus according to any one of claims 1 to 4.

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