JP4538296B2 - Signal connector connection part of electronic endoscope device - Google Patents

Description

  The present invention relates to a signal connector connecting portion of an electronic endoscope apparatus.

  In general, in an electronic endoscope apparatus, a signal connector of an electronic endoscope is connected to a video processor in order to transmit a signal input / output to / from a solid-state imaging device disposed at a distal end of an insertion section of the electronic endoscope. A plurality of contact members are provided corresponding to the connector receivers of the video processor.

Then, in order to securely connect the signal connector to the connector receiver and maintain the connection state, the engagement pin provided on one of the signal connector and the connector receiver is engaged with the cam groove provided on the other, and the rotation is performed. The engaging pin is guided along the cam groove by rotating the handle (for example, Patent Document 1).
JP-A-10-52400

  In the signal connector connecting portion of the electronic endoscope apparatus as described above, the electronic endoscope is operated at a midway position as the engaging pin is guided along the cam groove by rotating the rotary handle. The plurality of contact members provided in the signal connector and the plurality of contact members provided in the connector receiver of the video processor are connected to each other.

  However, when a plurality of contact members transition to a connected state, some contact members are connected but some contact members are not connected due to crossing dimensions of each contact member and its mounting member. Since the status occurs, the video processor may recognize that a “connection failure” has occurred and shift to error processing.

  Therefore, the present invention provides a signal connector connection for an electronic endoscope apparatus in which an error does not occur even when there is a deviation in the connection timing of a plurality of contact members when the signal connector of the electronic endoscope is connected to the connector receiver of the video processor. The purpose is to provide a department.

  In order to achieve the above object, the signal connector connecting portion of the electronic endoscope apparatus of the present invention transmits a signal input / output to / from a video processor to a solid-state imaging device disposed at the distal end of the insertion section of the electronic endoscope. A plurality of contact members corresponding to the signal connector of the electronic endoscope and the connector receiver of the video processor, respectively, and the engaging pins provided on one of the signal connector and the connector receiver are connected to the other. A rotating handle for engaging with a cam groove provided in the cam is provided, and the engaging pin is guided along the cam groove by rotating the rotating handle, and the contact member of the signal connector and the contact of the video processor In the signal connector connection part of the electronic endoscope apparatus configured to be connected to the member, the rotary handle is located at a position where all of the plurality of contact members are connected. Rotation position detection means for detecting this is provided, and signal transmission in a plurality of contact members is processed as effective only when the rotation position detection means is in the above-described detection state. .

  Note that a lock mechanism for locking the rotational movement of the rotary handle may be provided, and the lock mechanism may be in a locked state in a state where the rotational position detecting means is detecting the above.

  According to the signal connector connecting portion of the electronic endoscope apparatus of the present invention, the rotary handle is located at a position where the plurality of contact members provided on the signal connector of the electronic endoscope and the connector receiver of the video processor are all connected. By providing a rotational position detecting means for detecting the presence of the signal, the signal transmission in the plurality of contact members is processed as effective only when the rotational position detecting means is in the above-described detection state. In the process where all the contact members are connected, no error occurs even if the connection timings of the plurality of contact members are shifted.

  In order to transmit a signal input / output to / from a video processor to / from a solid-state imaging device disposed at the distal end of the insertion portion of the electronic endoscope, a plurality of signals are respectively provided to the signal connector of the electronic endoscope and the connector receiver of the video processor. Corresponding contact members are provided, and a rotating handle is provided for engaging an engaging pin provided on one of the signal connector and the connector receiver with a cam groove provided on the other, and the rotating handle is rotated. The signal connector connection of the electronic endoscope apparatus configured such that the engagement pin is guided along the cam groove by the operation, and the contact member of the signal connector and the contact member of the video processor are connected. A rotation position detection means for detecting that there is a rotation handle at a position where all the contact members are all connected, and the rotation position detection means detects the rotation handle. Signal transmission in a plurality of contact members only when the to state that is to be treated as valid.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 2 shows an endoscope video processor (also a light source device) 10, and a light guide connector to which a light guide connector and a signal connector of an endoscope (not shown) are connected to a front panel portion 11 thereof. A receiver 13 and a signal connector receiver 14 are arranged side by side. Reference numeral 15 denotes a rotary handle that is rotated when the signal connector is connected to the signal connector receiver 14.

  FIG. 3 shows a signal connector receiver 14. A plurality of (for example, 10 to 50) signal connector receivers 14 are provided at the bottom of a cylindrical receiving cylinder 16 attached to the front panel 11 portion of the video processor 10 so as to protrude outward. Contact holes 17 (contact members) are arranged.

  Each contact hole 17 is formed in an indented state in an electrical insulating member formed in a short cylindrical shape, and an electrical contact is formed therein, each of which will be described later with a signal line not shown. It is connected to a control board 25 in the video processor 10.

  The receiving cylinder 16 is formed with a straight groove 18 opened to the protruding end side in a direction parallel to the axis, and is rotatable around the axis on the outer periphery of the receiving cylinder 16 (however, it does not move in the axial direction) (I) A cam groove 20 is formed on the cam cylinder 19 fitted and disposed so as to be aligned with the linear groove 18.

  As shown in FIG. 4, which is a development view, the cam groove 20 is configured so that an engagement pin 7 provided on a signal connector 2 of the electronic endoscope 1 to be described later can be engaged. An opening 20a is formed on the projecting end surface of the, and by engaging the engaging pin 7 along the cam groove 20, the signal connector 2 is connected to the signal connector receiver 14. ing.

  The rotary handle 15 and the cam cylinder 19 are connected and fixed so as to rotate integrally, and a micro switch 21 (rotation position detecting means) fixedly arranged on the front panel 11 is provided on the outer periphery of the cam cylinder 19. ) Is formed so as to protrude in accordance with the rotation operation of the rotary handle 15.

  The click member 23 is protruded from the front panel 11 so that the tip of the click member 23 is always elastically pressed against the back bottom surface of the cam cylinder 19, and the rotation handle 15 is connected to the signal connector 2 by the signal connector 2. When it is rotated to the locked position where it is completely connected to the receiver 14, as shown in FIG. Together, the rotational movement of the cam cylinder 19 and the rotary handle 15 is click-fixed elastically.

  FIG. 5 shows the signal connector 2 projecting from the connector portion 3 of the electronic endoscope 1 along with a light guide connector (not shown). The signal connector receiver 14 is inserted into and removed from the receiving cylinder 16. A plurality of contact pins 6 (contact members) are erected at positions corresponding to the contact holes 17 of the signal connector receiver 14 from the insulating substrate 5 disposed in the cylindrical insertion tube body 4 that is freely inserted. .

  When the signal connector 2 is connected to the signal connector receiver 14, the contact pins 6 are inserted into the contact holes 17, respectively, and electrical connection is performed therebetween. Each contact pin 6 is connected to a solid-state imaging device 8 (see FIG. 7) disposed at the distal end of the insertion portion of the electronic endoscope 1 by a signal line (not shown).

  Further, an engagement pin 7 that engages with the linear groove 18 and the cam groove 20 of the signal connector receiver 14 is provided on the outer peripheral portion of the insertion tube body 4 so as to protrude sideways. Engagement with the groove 18 restricts the rotational movement around the axis of the insertion cylinder 4, and the rotation handle 15 is rotated to rotate the cam groove 20, whereby the engagement pin 7 moves along the cam groove 20. The insertion tube 4 is guided and guided into the receiving tube 16, and the contact pin 6 enters the contact hole 17.

  FIG. 6 is a front view of the signal connector receiver 14, and when the rotary handle 15 is in the standby position, the projecting piece 22 is located away from the microswitch 21, and the engaging pin 7 of the signal connector 2 is connected to the signal connector receiver 14. When the rotary handle 15 is rotated about the axis by engaging with the cam groove 20 of the 14, the micro switch is moved at a position past all the contact pins 6 and the contact holes 17 in the middle of the operation. 21 is pushed by the projecting piece 22 to turn from off to on (or from on to off).

  In this way, the microswitch 21 detects that the rotary handle 15 has reached a position where all the contact pins 6 and the contact holes 17 are connected, and the rotary handle 15 is click-fixed by the click member 23. In the state of being rotated to the locked position, all the contact pins 6 and the contact holes 17 are connected, and the microswitch 21 has detected it.

  FIG. 1 shows a state in which the signal connector 2 of the electronic endoscope 1 is connected to the signal connector receiver 14 of the video processor 10 and the rotary handle 15 is in the locked position, and all the contact pins 6 are in the contact holes 17. Are connected to each other and electrically connected to each other, and the state is detected by the microswitch 21. Since the engaging pin 7 is engaged with the cam groove 20, the mechanical connection between the signal connector 2 and the signal connector receiver 14 is not released.

  FIG. 7 schematically shows signal wirings on the electronic endoscope 1 side and the video processor 10 side connected by the signal connector receiver 14, and a CPU (Central Processing Unit) is mounted in the video processor 10. The control board 25 is disposed, and the signal connector 2 is connected to the signal connector receiver 14 and the contact pin 6 and the contact hole 17 are connected, thereby transmitting a signal input / output to / from the solid-state imaging device 8. All signal lines are connected to the control board 25.

  However, in the control board 25, the detection signal sent from the micro switch 21 to the control board 25 is processed by the CPU, and as shown schematically in FIG. Only when a detection signal for detecting the presence of the rotary handle 15 is input at a position where the contact hole 17) is connected, signal transmission at each contact member (contact pin 6 and contact hole 17) is effective. Controlled to process.

  Therefore, in the process where all the contact members (contact pin 6 and contact hole 17) are connected, a part of the contact member (contact pin 6 and contact hole 17) is connected and a part is not connected. Even in the process, the signal transmission with the solid-state image pickup device 8 is not processed as being effective in the control board 25 in the process. Since the contact member (contact pin 6 and contact hole 17) is connected, there is no possibility that erroneous error processing or the like is executed.

  The present invention is not limited to the above embodiment. For example, the cam groove 20 may be provided on the signal connector 2 side, and the engagement pin 7 may be provided on the signal connector receiver 14 side. There is no problem.

It is side surface sectional drawing of the lock state of the signal connector connection part of the electronic endoscope apparatus of the Example of this invention. It is an external appearance perspective view of the video processor of the Example of this invention. It is side surface sectional drawing of the signal connector receptacle of the Example of this invention. It is an expanded view of the cam groove of the Example of this invention. It is side surface sectional drawing of the signal connector of the Example of this invention. It is a front view of the signal connector receptacle of the Example of this invention. It is a schematic diagram of wiring in the state where the electronic endoscope was connected to the video processor of the example of the present invention. It is a time chart which briefly shows the operation | movement of signal transmission valid / invalid control performed in the control board of the Example of this invention.

Explanation of symbols

1 Electronic Endoscope 2 Signal Connector 6 Contact Pin (Contact Member)
7 engaging pin 8 solid-state imaging device 10 video processor 14 signal connector receiver (connector receiver)
15 Rotating handle 17 Contact hole (contact member)
18 Linear groove 19 Cam cylinder 20 Cam groove 21 Micro switch (rotation position detecting means)
22 Projection piece 25 Control board

Claims (2)

In order to transmit a signal input / output to / from a video processor to a solid-state imaging device arranged at the distal end of the insertion part of the electronic endoscope, the signal connector of the electronic endoscope and the connector receiver of the video processor A plurality of contact members are provided correspondingly, and a rotary handle for engaging an engagement pin provided on one of the signal connector and the connector receiver with a cam groove provided on the other is provided, The engaging pin is guided along the cam groove by rotating the rotating handle, and the contact member of the signal connector and the contact member of the video processor are connected. In the signal connector connection part of the electronic endoscope device,
Rotation position detection means for detecting that the rotation handle is at a position where all of the plurality of contact members are in a connected state, and when the rotation position detection means is not in the detection state, An electronic device comprising: control means for processing signal transmission at the plurality of contact members as effective only when the rotational position detecting means is performing the detection without turning off the power. Signal connector connection part of the endoscope apparatus.   The electronic endoscope according to claim 1, wherein a lock mechanism for locking the rotational movement of the rotary handle is provided, and the lock mechanism is in a locked state in a state where the rotational position detecting means performs the detection. Signal connector connection part of the device.

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