JP3581785B2 - Endoscope device housing where connection member for noise suppression is arranged - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an endoscope apparatus housing, and more particularly to a configuration of an endoscope apparatus housing in which a housing body and a cover thereof are electrically connected by an EMI spring or the like to prevent noise.
[0002]
[Prior art]
For example, in an electronic endoscope device, a scope is configured to be connected to a processor device or a light source device, and the casing of the processor device has a structure in which high-frequency noise is radiated from the inside and affects peripheral devices. In order to suppress this, an EMI (Electro-Magnetic Interference) spring formed by bending a leaf spring member or a gasket is disposed.
[0003]
FIG. 5 shows the above-mentioned conventional processor device and light source device. For example, a light source device 2 is placed on a lower processor device 1 and arranged. In the lower processor device 1, the EMI spring 5 is attached between the upper surface member (metal) 3A of the housing body 3 and the cover 4 placed thereon.
[0004]
According to the EMI spring 5, even if the housing body 3 and the cover 4 are deformed due to environmental conditions such as temperature and the distance between them is slightly changed, an electrical contact state is maintained and one of them is grounded. Is maintained at the ground potential. Therefore, a noise current generated from an internal circuit or the like of the processor device 1 flows to the ground via the main body 3 and the cover 4, thereby suppressing the noise from being radiated to the outside.
[0005]
[Problems to be solved by the invention]
However, in the configuration of the above-described conventional endoscope device housing, as shown in FIG. 5, the cover 4 is fixed to the side surface of the housing main body 3 with the fixing screws 6A and 6B. The center of the upper surface tends to bend so as to swell, and the swelling causes the EMI spring 5 to separate from the upper surface member 3A or the cover 4 to cause a problem of poor contact.
[0006]
Further, in the processor device 1, the load of the light source device 2 mounted thereon is applied to the end of the cover 4 via, for example, the legs 7 disposed at the four corners. The club swells. If the cover 4 or the upper surface member 3A of the housing main body 3 and the EMI spring 5 cause a contact failure, these members cannot be naturally held at the ground potential, and the effect of dissipating noise decreases.
[0007]
The present invention has been made in view of the above problems, and an object of the present invention is to maintain a good contact state of the noise countermeasure connection member even when there is a case deformation such as a swelling of the upper central portion of the case cover. Another object of the present invention is to provide an endoscope apparatus housing that can maintain the effect of preventing noise from escaping to the outside.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an endoscope apparatus housing comprising a main body and a cover body, wherein another device constituting an endoscope system is mounted on an upper surface of the cover body. And a cover body are electrically connected to each other, and a connecting member for noise suppression is used to hold them at a ground potential. The connecting portion for noise suppression is provided with a support portion for supporting the weight of the other device. It is characterized by being arranged between the cover body and the main body at or near the position.
[0009]
According to the above configuration, for example, concave portions for positioning the legs (supporting portions) of the upper device are formed at four corners of the upper surface of the cover body, and an EMI spring is provided between the rear surface of the concave portion and the housing body. Be placed. Further, since another device is placed in the concave portion, the concave portion does not rise above the lower main body than a predetermined state, and poor contact with the EMI spring below or the EMI spring and the housing Poor contact with the main body does not occur.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show an endoscope apparatus housing according to the embodiment. In this example, as shown in FIG. 1A, a light source device 12 is placed on a processor device 10. It is configured to be mounted. In the processor device 10, a signal cable from a scope is connected to a connector 13, and various signal processing circuits for performing image processing on a video signal sent from a CCD or the like are arranged inside.
[0011]
In addition, a light guide cable from a scope is connected to the connector 14 of the light source device 12, and light emitted from a light source in the device 12 is supplied to a distal end portion through the light guide cable. At the four corners of the bottom surface of the light source device 12, legs (supporting portions) 15 for supporting the weight of the entire device are attached.
[0012]
FIG. 1B shows a housing main body portion of the processor device 10. The processor device 10 includes the main body 16 and a cover 17 shown in FIG. As shown in FIG. 2, the main body 16 is provided with a base 19 projecting from the front plate to the upper surface side (the same applies to the rear plate), and the EMI spring 20 illustrated on the base 19 is placed thereon. Note that a gasket (conductive member) may be used instead of the EMI spring 20.
[0013]
As shown in FIG. 3, the other cover 17 has an upper surface and both side surfaces as in the conventional case, and the side surface is fixed to the main body 16 with fixing screws 22. On the upper surface of the cover 17, circular recesses 24 for positioning the legs 15 of the light source device 12 are formed at four corners.
[0014]
In such a configuration, as shown in FIGS. 1 and 4, the EMI spring 20 is disposed on the base 19 of the main body 16 and below the recess 24 of the cover 17 described above. As shown in FIG. 4, the EMI spring 20 is formed by bending a leaf spring in a shape such that the upper side becomes an arch shape with respect to the bottom surface of the flat plate, and the bottom surface is adhered to the base 19 with an adhesive or the like. Will do.
[0015]
As described above, according to this example, the weight of the light source device 12 is applied to the concave portion 24 of the cover 17 of the processor device 10 and its periphery via the leg portion 15, and this portion is It is hard to leave. Therefore, as shown in FIG. 4, the EMI spring 20 firmly contacts the back surface of the cover 17 (recess 24) or the base 19 of the main body 16, and this state can be maintained.
[0016]
In the above example, the concave portions 24 are provided at the four corners of the cover 17. However, the concave portions 24 may not be provided, and the EMI spring 20 may be disposed not only directly below the leg 15 but also in the vicinity thereof. It will be good. Further, the upper and lower relationships of the above devices may be reversed, and these devices include all devices used in the endoscope system.
[0017]
【The invention's effect】
As described above, according to the present invention, in a lower device in which two devices are arranged in an overlapping manner, a connection for noise suppression for electrically connecting the housing body and the cover body and holding them at the ground potential. When a member is used, the noise-measuring connection member is arranged at or near the position where the portion supporting the weight of the upper device is arranged, so that the housing deformation such as the center of the upper surface of the housing cover rises. Even if there is, the contact state of the noise countermeasure connection member is kept good, and a reduction in the effect of preventing noise from escaping to the outside is prevented.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an endoscope apparatus [(FIG. A)] and a housing body [(FIG. B)] according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a structure of a front plate and a rear plate of the main body of FIG. 1;
FIG. 3 is a perspective view showing an external configuration of the processor device of FIG. 1;
FIG. 4 is a cross-sectional view showing an arrangement state of EMI springs at four corners of the processor device.
FIG. 5 is a diagram showing a configuration of a conventional endoscope apparatus housing.
[Explanation of symbols]
1,10 ... processor device,
2,12 ... light source device,
3,16 ... body,
4,17… cover,
5,20 ... EMI spring,
7,15 ... legs,
19 ... units,
24 ... recess.

Claims (1)

In an endoscope device housing comprising a main body and its cover body, and mounting another device constituting the endoscope system on the upper surface of the cover body,
The above-mentioned main body and the cover body are electrically connected, and a connection member for noise suppression is used to hold these at a ground potential.
The noise-measurement connection member, wherein the noise-measurement connection member is arranged between the cover body and the main body at or near a position where a supporting portion for supporting the weight of the other device is arranged. Endoscope device housing to be placed.

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