JPH09243934A - Connector device for electric scope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high performance shield property even when strain of a connector and sink-down, etc., of a connection part of a processor side exist. SOLUTION: A contact piece spring 44 is constituted of a barrel part 44A bent formed in a nearly U shape and a pair of upper/lower contact pieces 44B projecting from the body part 44A to a terminal part side of a set-up board. plural parallel slits are cut deep into a pair of upper/lower contact pieces 44B on upper/lower symmetrical positions from the tip side to the base end side of the contact pieces, and the contact pieces 44B are formed to a comb tooth shape consisting of plural the same shape projection surface parts 44E. Thus, respective projection surface parts 44E are constituted so as to be capable of forming independent contact surfaces for the connectors of the processor side.

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 scope, and more particularly to an electronic scope used for an electronic endoscope apparatus, which is connected to a processor for processing a signal from the electronic scope as an image signal. Regarding a connector device.

[0002]

2. Description of the Related Art In an electronic endoscope apparatus, a CCD is built in a tip portion of an electronic scope, a signal from the CCD is transmitted to a processor through a multicore cable, and a signal is further processed in the processor to display an image. Displayed on the monitor TV screen. In this electronic endoscope apparatus, the electronic scope and the processor are connected via connectors.

Further, a treatment instrument such as a high-frequency snare is inserted through a forceps channel formed between the tip of the electronic scope and the manual operation section, and the treatment instrument is operated while observing the affected section on the image of the monitor television. Cutting, stopping hemostasis, etc. Therefore, an extremely clear image is required for the monitor television. However, when noise generated by an external environment using the electronic scope, high-frequency noise generated by a treatment tool, for example, a high-frequency snare, etc. enters into the electronic scope connector device, the image on the monitor television becomes unclear.
On the contrary, radiation noise from the connector device to the outside is large, and variations and adverse effects are exerted on external equipment.

For these reasons, the electronic scope connector device is required to have a high-performance shielding property.

[0005]

However, in the conventional connector device for the electronic scope, in the connection portion with the connector device on the processor side, distortion of the connector on the processor side or sag of the connection portion on the electronic scope side causes a problem. There is a drawback that poor contact is likely to occur and high-performance shielding properties cannot be obtained.

The present invention has been made in view of the above circumstances, and a connector for an electronic scope capable of obtaining a high-performance shielding property even if the connector on the processor side is distorted or the connection portion is dented. Provide a device.

[0007]

In order to achieve the above object, the present invention is a connector device for an electronic scope, which is connected to a connector of a processor for performing image signal processing and the like, and is wired in the electronic scope. A connector device having a shield case to which a shield wire of a signal cable is connected, and a contact spring arranged in the shield case and electrically connecting the shield case and a ground grounding member of the connector of the processor. The contact piece spring has a plurality of plate-shaped surface portions each of which is elastically deformable at a connection portion connected to the processor-side connector, and each plate-shaped surface portion forms an independent contact surface with respect to the connector. It is characterized by doing so.

According to the present invention, the contact piece spring has the plurality of plate-shaped surface portions forming the contact surface independent of the connector of the processor in the connection portion connected to the connector on the processor side. Even if one plate-shaped surface portion causes poor contact with the processor-side connector, the other plate-shaped surface portion forms a contact surface for the processor-side connector. Therefore,
A contact area required to obtain a high-performance shield property can be secured in the connection portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a connector device for an electronic scope according to the present invention will be described below in detail with reference to the accompanying drawings. 1 is a top sectional view of a connector 10 of an electronic scope according to the present invention, FIG. 2 is a front view of the connector 10, and FIG. 3 is a side sectional view of the connector 10.

As shown in these figures, a shield case 14 having an opening on the front surface (left side in FIG. 1) forms a space 16 in the rear portion of the housing 12 inside the plastic housing 12. Is installed in. A setup board 22 (connector substrate) having a plurality of terminals 20 is inserted into the terminal portion 18 from the opening of the shield case 14, and a flange member 24 formed on the outer periphery of the setup board 22 makes the opening of the shield case 14 airtight. And is blocked. Further, the rear end portion (right side in FIG. 1) of the setup board 22 is supported by the shield case 14 by the insulating fixing member 28, and the cable holding portion 30 is provided on the rear surface of the shield case.
Is provided.

A signal cable such as a multi-core cable 32 for sending a signal from a CCD or the like provided in the electronic scope or a remote cable 34 for a camera shutter is inserted into a lead-in port 36 formed at the rear end of the housing 12. Confidentiality protection plug 3 provided
8 (for example, a rubber stopper) and is drawn into the space 16 in the housing 12. The cables 32 and 34 drawn into the space 16 are wound around a ferrite core 39 supported at the rear end of the fixing member 28 or another ferrite core 40 that is not fixed, and then the cable holding portion 30.
And is connected to the connecting portion 42 of the setup board 22 via the cable holding portion 30. On the other hand, the shield wire that shields the cables 32 and 34, or the shield wire of the forceps channel (not shown) is the cable holding portion 30.
Is connected to the shield case 14 via.

Further, the shield case 14 is provided with a pair of left and right contact piece springs 44, 44 made of metal elastic pieces so as to surround the entire front side circumference of the shield case 14.
4 is fixed to the shield case 14 with set screws 47, 47 ... The contact piece spring 44 is formed so that a body portion 44A, which is a connection portion with the shield case 14, makes surface contact with the shield case and surrounds the entire circumference of the shield case 14. As a result, the electrical contact area between the contact spring 44 and the shield case 14 can be increased, so that noise easily flows from the shield case 14 to the contact spring 44 near the chassis of the processor.

FIG. 4 is a perspective view of the contact piece spring 44, FIG. 5 is a top view, and FIG. 6 is a side view of FIG. 4 viewed from the direction of the arrow. As shown in these figures, the contact piece spring 44 includes a body portion 44A bent and formed in a substantially U-shape, a pair of upper and lower contact pieces 44B protruding from the body portion 44A toward the terminal portion 18 side of the setup board 22, 44B and. Body part 4
A groove 44C having a concave cross section is formed at the connecting portion between 4A and the contact pieces 44B, 44B, and this groove 44C is formed in the shield case 1.
4 is fitted in the corresponding groove, and screw holes 44D, 44D ...
It is fixed to the shield case 14 by the set screws 47, 47 through. Plural parallel slits are cut from the front end side to the base end side of the contact piece in the vertically symmetrical position in the pair of upper and lower contact pieces 44B, 44B, and the contact piece 44B is composed of a plurality of comb-shaped teeth 44E having the same shape. Formed into a shape.
As a result, each of the projecting surface portions 44E is elastically deformed individually with respect to an external force, so that each of the projecting surface portions 44E can form an independent contact surface for the connector. Further, the tip end side 44F of each projecting surface portion 44E is formed so as to be curved so as to press the outer surface of the ground grounding case of the connector (not shown) on the processor side provided with the socket terminal (see FIG. 6). ). Accordingly, when the connector 10 of the electronic scope and the connector of the processor are connected, the pair of upper and lower contact pieces 44B, 44B can be surely brought into contact with the grounding case of the connector on the processor side.

On the other hand, the ground grounding case of the processor is connected to the chassis (ground) of the processor via the capacitor. As a result, a shield line is formed in the electronic scope through the seal lines of the signal cables 32 and 34, the shield case 14, and the contact spring 44 to the chassis of the processor. In addition, the contact spring 44 and the housing 12
An insulating airtight holding plate 48 (for example, a rubber plate) is interposed between the inner surface and the inner surface, and a groove having a concave cross section of the airtight holding plate 48 is fitted into the groove 44C of the contact piece spring 44, and at the same time, this groove portion is formed. The insulating O-ring 46 is wound so as to be fitted therein. An airtight structure of the connector 10 is formed by the airtight holding plate 48 and the airtightness holding plug 38 provided in the inlet 36 described above. Therefore, when cleaning the electronic scope, the cleaning liquid does not enter the connector 10 even if the connector 10 is cleaned. Further, a plastic housing cover 50 is provided so that the terminal portion 18 of the setup board 22 and the contact pieces 44B and 44B of the contact piece spring 44 are exposed, and bolts 52 and 52 are fixed to the housing 12.

Next, the operation of the connector device 10 of the electronic scope configured as described above will be described with an example in which it is applied to an electronic endoscope device. Before using the electronic endoscope device, the connector device 10 of the electronic scope is connected to the connector of the processor provided with the socket terminal. By this connection, the contact piece spring 44 of the connector 10 on the electronic scope side comes into contact with the ground grounding case of the connector on the processor side. As a result, noise that enters the electronic scope is dropped into the processor chassis, that is, the signal cable 3
The grounding of the connector of the processor via the shield wires 2 and 34, the shield case 14 provided in the connector device 10 to which the shield wires of the signal cables 32 and 34 are connected, and the contact spring 44 provided in the shield case 14. A line is formed that falls on the member. In the connection between the connector device 10 of the electronic scope and the processor-side connector provided with the receiving terminal, the contact piece 44B and the processor side may be distorted due to, for example, distortion of the processor-side connector or sag of the contact piece 44B. If a poor shield occurs without sufficient contact with the connector of, the noise that enters the electronic scope or connector will not be reliably dropped to the ground grounding member of the processor, and the image on the monitor TV of the electronic endoscope device will be unclear. Become. Further, when a shield defect occurs, not only the amount of noise radiated to the outside increases, but also variations in the amount of noise adversely affect external equipment.

Therefore, in the present invention, in the contact piece spring 44, the contact piece 44B, which is a connecting portion to be connected to the connector on the processor side, is formed into a comb-tooth shape by the plurality of elastically deformable projecting surface portions 44E. Each projecting surface portion 44E independently forms a contact surface with respect to the connector on the processor side. As a result, for example, even if one projecting surface portion 44E receives a pressing force due to the distortion of the connector on the processor side, only the projecting surface portion 44E that receives the pressing force elastically deforms and the other projecting surface portion 44E.
Does not elastically deform, so that the other projecting surface portion 44E can properly make surface contact with the connector of the processor. Further, even if one protrusion surface 44E is depressed due to long-term use and a contact failure with the connector on the processor side occurs, the influence of the depression does not reach the other protrusion portions 44E.
The other protruding surface portion 44E can form a contact surface independent of the connector on the processor side. Therefore, the connector device of the electronic scope of the present invention can secure the contact area required to obtain high-performance shielding properties.

By the way, when the contact piece 44 is formed of a single plate, the contact piece 44 is prevented from being distorted by the connector on the processor side.
When a part of the contact piece is pressed, the pressing force affects the entire contact piece 44, and a gap is apt to be formed between the contact piece 44 and the connector on the processor side. The area cannot be secured.

[0018]

As described above, according to the connector device for an electronic scope of the present invention, even if the connector on the processor side is distorted or the contact piece is sagged, a high-performance shielding property can be obtained. It is possible to secure the necessary contact area. As a result, noise entering the electronic scope or the connector can be surely dropped to the ground grounding member of the processor. For example, when a monitor TV is connected to the processor, the image on the monitor TV can be made clearer. .

Further, since the amount of noise radiated to the outside is reduced and variations in the amount of noise are eliminated, it is possible to eliminate adverse effects on external equipment.

[Brief description of drawings]

FIG. 1 is a top sectional view of a connector of an electronic endoscope apparatus of the present invention.

FIG. 2 is a front view of a connector.

FIG. 3 is a side sectional view of a connector.

FIG. 4 is a perspective view showing an example of a contact spring.

FIG. 5 is a top view of a contact spring.

FIG. 6 is a side view of FIG. 4 as seen from the direction of the arrow.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector 12 ... Housing | casing 14 ... Shield case 18 ... Terminal part 22 ... Setup board 30 ... Cable holding part 32, 34 ... Cable 38 ... Airtight holding stopper 39, 40 ... Ferrite core 44 ... Contact spring 44A ... Body part 44B ... Contact piece 44C ... Groove 44D ... Screw hole 44E ... Projection surface portion (plate-shaped surface portion) 48 ... Airtight holding plate 50 ... Housing lid

Claims (2)

[Claims] 1. A connector device for an electronic scope, which is connected to a connector of a processor for performing image signal processing,
A shield case to which a shield wire of a signal cable wired in the electronic scope is connected, and a contact piece spring arranged in the shield case and electrically connecting the shield case and a ground grounding member of the connector of the processor. In the connector device having the above, the contact piece spring has a plurality of plate-shaped surface portions in which a connecting portion connected to the connector on the processor side is individually elastically deformable, and each plate-shaped surface portion with respect to the connector. A connector device for an electronic scope, characterized in that each of them forms an independent contact surface. 2. The connector device for an electronic scope according to claim 1, wherein the shape of the connecting portion having a plurality of plate-shaped surface portions is a comb-teeth shape.