JPH0322031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in medical electrical devices used for medical treatment, such as light source devices for endoscopes.

In light source devices for endoscopes, devices have been considered in which functions can be expanded by connecting an accessory functional device, typified by an expansion unit, to the light source device as a separate electrical device.

Conventionally, when connecting this accessory functional device, a connecting part is formed on the main body side, a plug-in method or a connector is used, and the accessory functional device is electrically connected through a cord to the connecting part, and the accessory functional device is separated into units. There is a technology to place it in a certain place.

By the way, when connecting the light source device and the attached functional device, most of the connection lines that form the connection part are weak signal lines and some are power lines, due to the operation of the attached functional devices. In order to ensure safety, it is necessary to avoid dust, dirt, etc. that can cause noise and poor contact in signal lines.

However, according to the above-mentioned plug-in method and technology using a connector, all of the connection parts are exposed to the outside of the light source device, and there is a risk that a user or the like may accidentally touch the power supply line. Moreover, the connection part is completely unprotected from dust and dirt. Furthermore, since the electrical connection is made simply through the connection part, there is a risk that a completely different unit may be attached.

Therefore, as shown in Japanese Utility Model Publication No. 54-33368, when a connector member is inserted into the connector part of the main body, a cover (lid) is provided on the connector part, and this cover opens when the connector member is inserted. There is. However, in this example, the lid remains open when the connector member is pulled out, and if the cover is forgotten to close, the above-mentioned problem will still occur. Furthermore, it is also possible to release the lock with your finger or a stick, and in this case, the lid will remain open.

There are also examples where the lid is automatically closed, as shown in Utility Model Publication No. 55-6451 and Utility Model Publication No. 51-79694, but in these cases, when the center of the lid is pressed, the lid opens immediately. It has the disadvantage of being

This invention was made in view of the above-mentioned circumstances, and it is designed so that the cover opens only when a required electrical device is inserted, and closes when the device is removed. It is an object of the present invention to provide a medical electrical device with high safety and good operability.

The present invention will be explained below based on an embodiment shown in FIGS. 1 to 4. In FIG. 1, numeral 1 indicates an endoscope light source device which is an electric device, and 2 is the main body of the light source device 1. As shown in FIG. An insertion opening 4 is provided at the rear of the main body 2 into which an expansion unit 3 as a separate electric device is inserted. Here, the expansion unit 3 has two stages of guides 5, 5 on both sides with respect to the insertion direction of the housing 3a, and
It has a connector 6 as a connection part inside the insertion end. In addition, 7 is a connection hole, and 8 is a board constituting the expansion unit 3 connected to the connector 6.

On the other hand, a concave partition wall 9 extending into the main body 2 is connected to the inside of the insertion opening 4 . The guides 5 and 5 of the expansion unit 3 are provided on the inner surface of both sides of the partition wall 9 in the width direction on the side of the insertion opening.
Guide grooves 10a, 10a corresponding to the guide grooves 10a, 10a are provided, and a recessed space surrounded by the guide grooves 10a, 10a and the partition wall 9 constitutes a guide insertion path 10. Therefore, in the main body 2, the expansion unit 3 is
It can be inserted into the main body 2 through the guide insertion path 10 using the mutually interlocking guide grooves 10a, 10a and the recessed space as guides. Further, on the wall portion of the partition wall 9 that is on the terminal side of the guide insertion path 10, a connection board 11 is provided as a connection portion connected to equipment (not shown) in the main body 2 at a position facing the connector 6 of the expansion unit 3.
extends through the through hole 10b toward the guide insertion path 10, and extends the expansion unit 3 into the guide insertion path 10.
By inserting along the line, the end of the connection board 11 is inserted into the connector 6 of the expansion unit 3, and the power line and signal line between the light source device 1 and the expansion unit 3 are electrically connected through the connection board 11 and the connector 6. It is now possible to do so. Note that 12 is a stopper provided at the lower end of the guide insertion path 10, and it goes without saying that the size of the guide insertion path 10 in cross section corresponds to the size of the expansion unit 3.

Further, a cover 13 for opening and closing the insertion opening 4 is provided on the guide insertion path 10. This cover 13 covers the guide insertion path 10 excluding the guide grooves 10a and 10a.
It is made up of a plate whose dimensions are approximately the same as the cross-sectional area of , and its mounting structure is as follows.

That is, as shown in FIG. 4, a through hole 14 for storing the cover is formed in the upper wall portion of the partition wall 9 from a position corresponding to the end of the guide grooves 10a, 10a toward the inside of the main body 2. A support shaft 15 is installed at the end of the hole 14 on the insertion opening 4 side. The upper end of the cover 13 is rotatably connected to the support shaft 15, and the spring member 1 wound around the support shaft 15 is
6, the cover 13 is urged toward the closed side and attached. Therefore, the cover 13 can open and close the insertion opening 4 in the vertical direction using the support shaft 15 as a fulcrum, and in the closed state, the guide groove 1
The closed state can be maintained by using the ends of 0a and 10a as stoppers.

On the other hand, a lock mechanism 17 for controlling opening and closing of the cover 13 is provided on the main body 2 side. This locking mechanism 17 is constructed as shown in FIGS. 2 and 3.

That is, to explain the structure of the lock mechanism 17, reference numeral 18 in the figure is a reciprocating member having a flange 18a on the base side. A lock pawl 19 constituting a lock portion and a protrusion portion 20 constituting a protruding/recessing portion are connected to the distal end portion of the reciprocating member 18 in a U-shape. The base of the reciprocating member 18 configured in this manner is inserted into the sliding hole 21a of the support member 21 provided on the side of the side wall portion of the partition wall 9 corresponding to the side of the cover 13 so as to be freely retractable. . Further, at the tip of the reciprocating member 18, a lock pawl 19 passes through the through holes 22a and 22b, which are respectively bored in the gap of the guide groove 10a, at the position of the cover 13 in the closed state. It is arranged so that it can be protruded and retracted into the immediate vicinity, and the protrusion 20 is inserted into the through hole 22.
b, and is disposed so as to be able to protrude and retract to the outside of the cover 13 through the cover 13. A spring member 23 is interposed on the flange 18a side of the advancing/retracting member to urge the advancing/retracting member 18 toward the guide insertion path 10 side, and a guide is provided on the distal end surface of the protrusion 20 for guiding the protruding/retracting motion. The distal end surface of a leaf spring member 24 having an oblique guide surface 24a provided on the outside of the insertion path 10 is in contact with the plate spring member 24 through the through hole 22b. Therefore, the lock mechanism 17 normally locks the cover 13 in the closed state by the lock pawl 19 that is biased by the spring member 13 and retractably protrudes inward from the side of the guide insertion path 10. size,
By inserting the required expansion unit 3 including the shape along the guide insertion path 10, the protrusion 20
The cover 13 is retracted, and the locking claw 19 is retracted to release the lock of the cover 13, so that the extension unit 3 can be controlled to be received into the main body 2.

Next, the operation of the medical electrical device configured as described above will be explained.

When the expansion unit 3 is not installed, the insertion opening 4 of the cover 13 is locked in the closed state by the protrusion of the lock claw 19, thereby shielding the contact board 11 from the outside and preventing contact with the power supply line. It also prevents dust and dirt on the signal lines.

When attaching the expansion unit 3 to the light source device 1, the expansion unit 3 is inserted into the insertion opening 4 with the connector 6 side as the insertion end, so that the guides 5, 5 engage with the guide grooves 10a, 10a and are supported. , are also guided to the guide insertion path 10. The expansion unit 3 guided along the guide insertion path 10 is then inserted into the guide surface 2 of the leaf spring member 24.
4a, the leaf spring member 24 is pushed in, so that the protrusion 20 retracts against the elastic force of the spring member 23, and at the same time the lock pawl 19 that locks the cover 13 retracts. As a result, the cover 13 is unlocked, and as the expansion unit 3 is inserted, the cover 13 is pressed against the support shaft 1.
It gradually opens with 5 as the fulcrum, and finally opens fully. In this way, the connector 6 is connected to the connection board 11 on the main body 2 side by successive pushing (insertion) of the expansion unit 3, and when the required connection is completed, the insertion of the expansion unit 3 is restricted by the stopper 12. As shown in FIG. 4, the expansion unit 3 is electrically connected by a one-touch operation such as insertion, and the expansion unit 3 itself is also connected to the light source device 1.

In addition, when connecting this expansion unit 3, for example, if another model of expansion unit 3 is to be connected, the guide insertion path 10 and the expansion unit 3 are connected.
Furthermore, since the cover 13 is not properly engaged with the guide grooves 10a and 10a, the cover 13 remains locked, and connection of another expansion unit 3 is prevented.

Therefore, since the connection board 11 on the main body 2 side is protected by the cover 13 with a lock, there is a risk of danger if the user etc. touches the power line, and there is a risk of dust and dirt on the signal line causing poor contact. Further, it is possible to prevent troubles such as those caused by not covering the cover when not in use, and to ensure high safety and reliability. Moreover, since the expansion unit 3 can be connected with just one touch, operation is easy, and since the expansion unit 3 itself is connected to the light source device 1, there is no need for any cords, and furthermore, the expansion unit 3 can be connected to another location. The advantage is that there is no need to place Furthermore, by employing the locking mechanism 17 that allows only the required expansion units 3 to open the cover 13, it is possible to prevent erroneous connections such as when another expansion unit 3 is erroneously connected at the same time. Further, since the cover 13 is always urged in the closing direction by the spring member 16, when the connected expansion unit 13 is removed, the cover 13 will be closed by the spring member 16.
Since the insertion opening 4 is automatically closed by the elastic force of 6 and locked by the lock claw 19, the insertion opening 4 can be closed without requiring any troublesome operations. Moreover, even if the cover 13 is opened by recessing the protrusion 20 and the locking claw 19, the cover 13
Since it is adapted to be closed by the spring member 16, it is also possible to prevent the contacts from being touched by mischief. In addition, when inserting the expansion unit 3, the use of guide grooves 10a, 10a has the advantage of facilitating the connection operation and making it possible to firmly hold the expansion unit 3.

Furthermore, the present invention is not limited to the embodiments described above. For example, in the above-mentioned embodiment, a technique was adopted in which the locking mechanism 17, in which the locking pawl 19 and the protrusion 20 were connected, was disposed so as to be protrusive and retractable on the side of the guide insertion path 10, but the present invention is not limited to this.
An electromagnetic solenoid (not shown) is arranged on the 3 side, and a sensor (not shown) such as a photoelectric element is arranged in the guide insertion path 10, and the cover 13 is normally kept in a closed state through communication between the sensor and the electromagnetic solenoid. The cover 13 may be unlocked when the required expansion unit 3 is inserted along the guide insertion path 10, and according to the technology employing such sensors and electromagnetic solenoids, the arrangement, shape, etc. It has the advantage of being free from restrictions and having a rich degree of freedom.

Further, in the embodiments described above, the present invention is applied to a light source device for an endoscope, but the present invention is not limited to this and can be applied to many other medical electrical devices such as lasers.

As explained above, the present invention includes a guide insertion path in the main body of an electrical device, a cover that can be opened and closed, the cover is always locked in a closed state, and the lock is released when the required electrical device is inserted into the guide insertion path. By providing a locking mechanism (the lock cannot be released with fingers, sticks, etc.), the locking cover protects the connection parts of electrical equipment and ensures safety, and prevents connection failures due to dust, etc. In addition, since the cover is designed to close when the electrical device is unplugged after the lock is released, the connection part can be reliably protected. Moreover, at the same time, the locking of the cover prevents erroneous connection in which another separate electrical device is inserted into the electrical device, resulting in excellent safety and reliability. In addition, when connecting a separate electrical device, it is inserted through the guide insertion path and electrically connected through the connection part, so it can be operated with a simple one-touch operation without the need for a cord or placing it in a separate location. It is effective if you do it.

Furthermore, since the cover is always biased in the closing direction by the biasing means, if the separately connected electrical device is removed, the cover will automatically close and be locked by the locking mechanism, requiring troublesome operations. The insertion opening can be closed without having to do so.
Moreover, even if the locking mechanism is unlocked, the cover is closed by the biasing means, so that it is possible to prevent the contacts from being accidentally touched.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view showing the entire medical electrical device, FIG. 2 is a plan sectional view showing the structure around the lock mechanism, FIG. 3 is a front view thereof, and FIG. FIG. 4 is a side sectional view showing the structure of the cover as well as a state in which an additional electrical device is connected. 1... Endoscope light source device (electrical device), 2...
Main unit, 3... Expansion unit (separate electrical device), 4
... Insertion opening, 8 ... Connector, connection board (connection part), 10 ... Guide insertion path, 10a ... Guide groove, 13 ... Cover, 17 ... Lock mechanism, 19
. . . Lock pawl (lock portion), 20 .

Claims (1)

[Claims] 1. A guide insertion path is separately provided in the main body of the electrical device, into which the guide of the electrical device is inserted while being engaged and guided, and a cover that opens and closes the insertion opening is provided on this guide insertion path, and the cover is provided with a cover that opens and closes the insertion opening. A biasing means for always biasing the electrical device in the closing direction is provided at each of the terminal end of the guide insertion path and the insertion end of the electrical device when the electrical device is inserted into the main body of the electrical device. Separately, a connecting part is provided to electrically connect to the electrical device, and a lock part that protrudes freely from the side of the guide insertion path into the inside of the cover to lock the cover in the closed state, and the guide of the electrical device is guided separately. A locking mechanism is provided at a position where the locking mechanism is provided, and has a protruding and recessing part that protrudes freely outward from the cover and retracts when a separate electrical device is inserted to release the locking part, and the locking mechanism is provided with a locking mechanism that is provided at a position where the cover is normally closed. A medical electrical device characterized in that the cover is locked in the closed state and is unlocked when a required separate electrical device is inserted along the guide insertion path.