Main unit, connection structure of main unit and light guide part and control method
Technical Field
The present invention relates to endoscopes, and more particularly, to a host, a connection structure of the host and a light guide, and a control method.
Background
As shown in fig. 1, in an endoscope system widely used in the medical field, an endoscope light guide 20 is inserted into a main body 10 to form a connection structure between the main body and the light guide. The connection structure requires stable and reliable connection, ensures stable data transmission between the endoscope light guide part and the host, and provides stable gas and illumination light for the endoscope light guide part.
As shown in fig. 2, a light guide portion connecting portion 201 is provided on a light guide portion 20 of an endoscope in the prior art, a host connecting portion 101 is provided on a host 10, the light guide portion connecting portion 201 and the host connecting portion 101 are fixedly connected by a snap ring, and when the light guide portion connecting portion 201 is pulled out, the snap ring is pulled out from a clamping groove of the light guide portion connecting portion 201 due to the reduced stress diameter, thereby completing the separation operation. The structure still emits light outwards after the endoscope light guide part 20 is pulled out, so that the output light can possibly reach human eyes to cause injury, and meanwhile, after the endoscope light guide part 20 is pulled out, the host still sends signals to the light guide part, which is not beneficial to energy saving. That is, the existing structure can not establish the optical communication process to control the insertion and extraction of the light guide part of the endoscope.
Accordingly, those skilled in the art have been working to develop a connection structure between a host and a light guide unit in response to insertion and removal of the light guide unit of an endoscope.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a connection structure between a host computer and a light guide portion corresponding to an insertion/extraction operation of the light guide portion of an endoscope.
In order to achieve the above purpose, the invention provides a host machine, wherein the host machine is provided with a jack for inserting a light guide part, and the host machine is also provided with a bracket and an unlocking key;
The support is provided with a rotatable cantilever, one end of the cantilever is hinged with a lock shaft, and the lock shaft penetrates through the support and stretches into the jack;
The other end of the cantilever is connected with the unlocking key, a key switch is arranged in the unlocking key, the key switch is electrically connected with the host, and the key switch is positioned in the rotating stroke of the other end of the cantilever.
In order to enable the lock shaft to generate a section of idle stroke, the middle part of the cantilever is hinged with a first pin shaft arranged on the support, one end of the cantilever is provided with a second pin shaft, the lock shaft is provided with a hinge hole matched with the second pin shaft, and the hinge hole is a waist-shaped hole.
In order to ensure that the key switch starts the host to output power and signals, the unlocking key is also provided with a key switch supporting block, and gaps are arranged between the key switch supporting block and the key switch and between the key switch and the other end of the cantilever.
Further, an elastic sheet is arranged on one side of the key switch, which faces the key switch supporting block.
In order to reset the lock shaft, a limiting protrusion is arranged on one section of the lock shaft, which is positioned in the bracket, and a reset spring is arranged between the limiting protrusion and the bracket.
In order to facilitate the insertion of the light guide part, a guide inclined plane is arranged at one end of the lock shaft extending into the jack.
The invention provides a connection structure of a host and a light guide part, wherein the host is the host, the light guide part is inserted into a jack, a lock hole is formed at one end of the light guide part inserted into the jack, and a lock shaft is inserted into the lock hole.
In order to start the host to output power and signals to the light guide part, the light guide part is provided with a mirror body end spring needle, a host end spring needle is arranged in a jack of the host, and the host end spring needle is contacted with the mirror body end spring needle.
The invention also provides a control method for the connection structure of the host and the light guide part, wherein an unlocking key is arranged on the host;
when the light guide part is inserted into the host, the host starts the light guide part to output power and signals, and a lock is formed between the light guide part and the host;
when the unlocking key is pressed, the host computer stops outputting power and signals to the light guide part, and the unlocking is performed between the light guide part and the host computer, so that the light guide part is pulled out from the host computer.
Preferably, when the unlocking key is pressed, the host computer stops outputting the power and the signal to the light guide part, and then the unlocking is performed between the light guide part and the host computer.
The invention has the advantages that the invention can realize the judgment of whether the host is connected with the light guide part or not, thereby realizing that the host outputs electric power and signals when the light guide part is connected, and stopping outputting the electric power and signals when the light guide part is pulled out, namely, after the host is connected with the light guide part, if an unlocking key is not pressed, the host and the light guide part are not separated, thereby ensuring stable and reliable connection, and when the unlocking key is pressed, the host stops supplying power to the light guide part, supplying illumination light and stopping optical communication, at the moment, the light guide part can be pulled out from the host, and the host does not emit any light to the outside and does not supply power to the outside.
Drawings
Fig. 1 is a schematic perspective view of a connection structure between a host and a light guide unit in the prior art.
Fig. 2 is a schematic structural diagram of a connection structure between a host and a light guide portion in the prior art.
Fig. 3 is a schematic perspective view of a host according to the present invention.
Fig. 4 is a partial sectional view of the structure of the host in the present invention.
FIG. 5 is a schematic diagram of a portion of a host according to the present invention.
Fig. 6 is a schematic structural view of a lock shaft in a host according to the present invention.
Fig. 7 is a schematic perspective view of a light guide portion in the connection structure of a host and the light guide portion according to the present invention.
Fig. 8 is a front view of fig. 7.
Fig. 9 is a schematic diagram of the connection structure of the host and the light guide portion according to the present invention when the host and the light guide portion are locked.
Fig. 10 is a schematic diagram of the connection structure of the host and the light guide portion according to the present invention when the host and the light guide portion are unlocked.
Fig. 11 is a schematic structural diagram of a connection structure between a host and a light guide unit according to the present invention.
Fig. 12 is an enlarged schematic view of a portion P in fig. 11.
Detailed Description
The present invention will be further described with reference to the drawings and examples, and it should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A control method for connection structure of host and light guide part, set up the unlocking key set on the host;
when the light guide part is inserted into the host, the host starts the light guide part to output power and signals, and a lock is formed between the light guide part and the host;
when the unlocking key is pressed, the host computer stops outputting power and signals to the light guide part, and the unlocking is performed between the light guide part and the host computer, so that the light guide part is pulled out from the host computer.
Further, when the unlocking key is pressed, the host computer stops outputting the power and the signal to the light guide part, and then the unlocking is performed between the light guide part and the host computer.
As shown in fig. 3 to 12, the control method can be implemented by a connection structure between a host and a light guide part, wherein the host 10 is provided with a jack into which the light guide part 20 is inserted;
the bracket 114 is provided with a rotatable cantilever 109, one end of the cantilever 109 is hinged with a lock shaft 106, and the lock shaft 106 passes through the bracket 114 and extends into the jack;
The other end of the cantilever 109 is connected with an unlocking key 111, a key switch 110 is arranged in the unlocking key 111, the key switch 110 is electrically connected with the host 10, and the key switch 110 is positioned in the rotation stroke of the other end of the cantilever 109 and is used for stopping the host 10 from outputting power and signals.
In this embodiment, the middle part of the cantilever 109 is hinged with a first pin shaft 108 provided on a bracket 114, one end of the cantilever 109 is provided with a second pin shaft 107, the lock shaft 106 is provided with a hinge hole 106a matched with the second pin shaft 107, and the hinge hole 106a is a waist-shaped hole.
The unlocking key 111 is also provided with a key switch supporting block 112, and gaps are arranged between the key switch supporting block 112 and the key switch 110 and between the key switch 110 and the other end of the cantilever 109. The way of setting the gap has two advantages of 1 better controlling the stroke of the unlocking key 111 to facilitate the operation hand feeling, and 2 ensuring that the key switch 110 firstly sends a signal to the host, the lock shaft 106 is separated from the lock hole 206, and ensuring that the host 10 stops supplying power to the light guide part after the light guide part 20 is pulled out.
The side of the key switch 110 facing the key switch supporting block 112 is provided with an elastic piece 110a. In this embodiment, the elastic piece 110a is elastic foam, the key switch 110 and the elastic piece 110a are mounted together in a lower groove of the unlocking key 111, the cantilever 109 is disposed in an upper groove of the unlocking key 111, and the key switch supporting block 112 is disposed below the elastic piece 110a.
The lock shaft 106 is provided with a limit protrusion 106b on one section of the bracket 114, and a return spring 113 is arranged between the limit protrusion 106b and the bracket 114. Facilitating resetting of the lock shaft 106.
The end of the lock shaft 106 extending into the receptacle is provided with a guide slope 106c. The light guide part is beneficial to being inserted into the jack of the host.
As shown in fig. 7 to 12, in the above-mentioned connection structure between the host and the light guide portion, the light guide portion 20 is inserted into the insertion hole, one end of the light guide portion 20 inserted into the insertion hole is provided with a lock hole 206, and the lock shaft 106 is inserted into the lock hole 206.
The light guide part 20 is provided with a mirror body end spring needle 202, a host end spring needle 102 is arranged in a jack of the host 10, and the host end spring needle 102 is contacted with the mirror body end spring needle 202 and used for starting the host 10 to output power and signals. The spring needle has elasticity, which is beneficial to keeping contact after abrasion.
In this embodiment, the end face of the light guiding portion 20 facing the host 10 is further provided with a mirror-end optical communication interface 203 and a mirror-end air path interface 204, the jack of the host 10 is provided with a host-end optical communication interface 103 for providing optical communication light, a host-end air path interface 104 for providing air, and a host-end illumination light interface 105 for providing illumination light, and the unlocking key 111 is located above these interfaces.
The connection structure of the host and the light guide part has the following working principle:
When the light guide 20 is inserted into the jack of the host 10, the lock shaft 106 can be lifted up to move upwards at the contact position of the guide inclined plane 106c of the lock shaft 106, the hinge hole 106a on the lock shaft 106 is a kidney-shaped hole, so that the cantilever 109 at the idle stroke section of the kidney-shaped hole cannot move, the key switch 110 is prevented from being triggered when the light guide 20 is inserted into the host 10, the lock shaft 106 moves downwards under the elastic force of the reset spring 113 after the light guide 20 is inserted in place, the lock shaft 106 is inserted into the lock hole 206 to complete locking action, meanwhile, the mirror body end spring needle 202 is contacted with the host end spring needle 102, the mirror body end optical communication interface 203 is contacted with the host end optical communication interface 103, the mirror body end illumination optical interface 205 is contacted with the host end illumination optical interface 105, the host end spring needle 102 is contacted with the mirror body end spring needle 202 to obtain an in-place monitoring signal, the host 10 starts to supply power to the light guide 20, the mirror body end optical communication interface 203 is communicated with the host end optical communication interface 103, and the host end illumination optical interface 205 is provided with illumination light.
When the unlocking key 111 is pressed, the left end of the cantilever 109 is driven to move downwards, and when the cantilever 109 is pressed to the key switch 110, the key switch 110 gives a signal to the host 10, and the host 10 performs power-off, stops optical communication and stops providing illumination light to the light guide 20. At this time, due to the existence of the elastic sheet 110a, the unlocking key 111 can still move downward, but the pressing force is gradually increased until the pressing force is not moved, and the total stroke is larger than the distance between the lock shaft 106 and the lock hole 206, so that the purpose of stopping the host 10 from outputting the power and the signal to the light guide part 20 and then unlocking the light guide part 20 and the host 10 is achieved.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.