Endoscope cold light source assembly and endoscope

Abstract

The invention discloses an endoscope cold light source assembly and an endoscope, belonging to the technical field of endoscopes, the cold light source assembly comprises a cold light source host and a light guide part, the host body of the cold light source host is provided with a plug-in hole, and also comprises a locking assembly, the locking assembly comprises a pull ring and a fixing ring, the fixing ring is arranged on the inner side of the pull ring; the pull ring comprises a rigid ring and a flexible ring fixed on the inner side of the rigid ring, the inner wall of the flexible ring is elastically squeezed on the outer wall of the fixing ring; the fixing ring is provided with a through hole, and a pressure bead is provided in the through hole; the pull ring and the fixing ring are elastically supported on the host body, and an insertion channel is formed on the inner side of the fixing ring; the locking assembly also comprises a driving assembly, the outer wall of the light guide part is provided with a groove, and the endoscope comprises the cold light source host, and this scheme can effectively solve the problem of unplanned detachment of the cold light source host and the light guide part during the use of the endoscope, and has the characteristic of easy use.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an endoscope cold light source component and an endoscope. Background Art

[0002] An endoscope usually includes a host device and a mirror body connected to the host device. The specific application is that the mirror body enters the body through a natural channel or an incision channel to observe the internal features of the human body. The endoscope is an important medical device. The endoscope cold light source system is an important component of the endoscope. Its main function is to provide a high-brightness, stable light source to ensure that the doctor can clearly observe the details of the patient's body, while reducing the discomfort caused to the patient and avoiding the risk of tissue damage.

[0003] In existing applications, the cold light source system includes a cold light source host and a light guide tube. The light guide tube is connected to the cold light source host through the light guide part at its connection end. The common connection method is plug-in connection, and the connection state of the light guide part on the cold light source host is constrained by an elastic member. During the use of the endoscope, there is a risk of excessive pulling on the endoscope hose (light guide tube) when the operator turns around or makes large movements. Possible problems include causing the endoscope light guide part to fall off from the cold light source host, causing the endoscope to lose image signals and lighting environment during the operation, posing a safety hazard to the safety of the operation. At the same time, as the endoscope serves a longer service life, when the elastic member ages, the connection reliability between the light guide part and the cold light source host will be greatly reduced.

[0004] Based on the connection reliability problem between the light guide part and the cold light source host, the prior art involves patent documents with publication (announcement) numbers CN110403563B, CN109950723B, CN213429973U, and CN113520277A. Among these technical solutions, a technical solution using a magnetic adsorption method to improve the connection reliability between the light guide part and the cold light source host is provided, and a technical solution based on a spring steel ball clip to achieve corresponding connection is provided (CN109950723B).

[0005] Endoscopes are medical instruments widely used in the medical field. Further optimization of endoscopes will undoubtedly promote the development of the medical industry. Summary of the invention

[0006] In order to further optimize the endoscope mentioned above, the present invention provides an endoscope cold light source assembly and an endoscope. This solution can effectively solve the problem of unplanned detachment of the cold light source main unit and the light guide part during the use of the endoscope, and is easy to use.

[0007] In view of the above problems, an endoscope cold light source assembly and an endoscope provided by the present invention solve the problems through the following technical points: an endoscope cold light source assembly, comprising a cold light source host and a light guide part, a host body of the cold light source host is provided with a plug hole for plugging the light guide part, and also comprises a locking assembly for locking the light guide part on the cold light source host, the locking assembly comprises a pull ring and a fixing ring both of which are annular structures, and the fixing ring is arranged on the inner side of the pull ring;

[0008] The pull ring comprises a rigid ring and a flexible ring fixed inside the rigid ring, wherein the inner wall of the flexible ring is elastically pressed against the outer wall of the fixed ring;

[0009] The fixing ring is provided with a through hole penetrating the side wall of the fixing ring, and a pressure bead is provided in the through hole;

[0010] The pull ring and the fixing ring are both arranged on the main body and located at the position of the plug hole. The pull ring and the fixing ring are both elastically supported on the main body. The inner side of the fixing ring forms an insertion channel for the light guide part to be inserted into the plug hole.

[0011] The locking assembly further comprises a driving assembly, the driving assembly acts on the rigid ring and is used to drive the pull ring to reciprocate in the axial direction of the plug hole, and the outer wall of the light guide portion is provided with a groove for embedding the pressed bead;

[0012] Under the action of the driving assembly, the pull ring and the fixed ring can slide relative to each other in the axial direction of the plug-in hole, and in the radial direction of the plug-in hole, the relative positions of the two can slide as follows: in the first relative position, the flexible ring is located on the outside of the pressed bead, and in the process of inserting the light guide part into the plug-in hole, the pressed bead is embedded in the flexible ring, allowing the pressed bead to be embedded in the groove; in the second relative position, the pressed bead is embedded in the groove, the rigid ring is located on the outside of the pressed bead, and the pressed bead is supported on the inner wall of the rigid ring.

[0013] When the present solution is specifically applied to an endoscope, the light guide portion serves as the head end of the light guide tube, that is, the light guide portion is used to realize the connection between the light guide tube and the cold light source host, the plug-in hole serves as the connection hole for connecting the light guide portion to the host body, and the locking assembly serves as a component on the host body for realizing the locking of the light guide portion. In use, taking the plug-in hole provided at the front end of the host body as an example, the plug-in process of the light guide portion and the process of locking the light guide portion by the locking assembly are as follows: before the light guide portion is inserted into the plug-in hole from the front end of the host body, the pull ring and the fixing ring cooperate to form a flexible ring located at the orifice position outside the through hole, that is, the first position, which is larger than For example, the pull ring and the fixed ring both move to the front end of their respective movement trajectories. At this time, the pressure bead and the flexible ring are located at the same axial position of the plug-in hole. The through hole is a channel along the radial direction of the plug-in hole. The depth of the through hole is smaller than the diameter of the pressure bead. The diameter of the hole opening on the inner side of the through hole or the diameter of the through hole close to the inner side is smaller than the diameter of the pressure bead to prevent the pressure bead from escaping from the hole opening on the inner side of the through hole. In the process of inserting the light guide into the plug-in hole, before the pressure bead is embedded in the groove, the pressure bead is embedded in the flexible ring under the pressure of the outer side of the light guide on the inner side of the pressure bead. The giving way action of the pressure bead allows the light guide to be further inserted until it is inserted into the pressure bead embedding groove. When the pressure bead When the bead is embedded in the groove, the person inserting the light guide can sense the change in resistance to the light guide insertion caused by the elastic rebound of the pressure bead. After the operation is completed, the initial fixation of the light guide on the host body is achieved. Then, the driving component is activated, and the driving component acts on the rigid ring and pulls the pull ring backward. In this process, the friction force on the fixed ring generated by the elastic compression of the inner wall of the flexible ring against the outer wall of the fixed ring forces the fixed ring to move backward, and the normal force of the pressure bead on the light guide forces the light guide to move synchronously with the fixed ring. With the increase in the backward movement distance of the fixed ring, when the force of the host body on the fixed ring increases to the friction When the friction force is insufficient to further drive the fixed ring to move or maintain the original displacement state, the pull ring and the fixed ring are dislocated or further dislocated, that is, the pull ring moves backward or further backward relative to the fixed ring, so that the relative position of the two slides to the second relative position, that is, the rigid ring is located on the outside of the pressure bead, and the pressure bead is clamped between the rigid ring and the groove. When the pull ring moves backward to the set position, the drive assembly stops moving, and the matching relationship between the pull ring and the fixed ring is maintained in a state where the outside of the pressure bead is supported on the inside of the rigid ring. At this time, the rigid constraint provided by the outside of the pull ring to the pressure bead is used to lock the light guide part on the host body to complete the final locking. When the light guide part needs to be pulled out, the drive assembly is used to restore the positions of the pull ring and the fixed ring in the axial direction of the plug-in hole to the first relative position. At this time, the light guide part and the light guide tube can be provided with a pulling force toward the outside, so that the pressure bead is embedded in the flexible ring under the force of the groove wall and the outer side of the light guide part, providing a clearance action for the light guide part to be pulled out.

[0014] In summary, the structural design of the pull ring, the matching relationship between the pull ring and the fixed ring, and the elastic support of the main body for the pull ring and the fixed ring, allow the pull ring and the fixed ring to be staggered with each other to achieve the switchable constraint state provided by the pull ring for the pressed bead. The matching relationship between the fixed ring and the pull ring provides a structural basis for further pulling of the light guide part, and the driving assembly serves as the power element of the locking assembly.

[0015] Compared with the prior art: this solution provides a structural basis for the process of inserting the light guide into the host body, including preliminary fixation, further pulling, and final locking, which conforms to the general habit of users inserting the light guide tube on the cold light source host. At the same time, after the preliminary fixation, the light guide part can be further pulled to ensure the plug-in quality of the light guide part and the host body. When the pull ring and the fixing ring are misaligned to the outside of the rigid ring constraining the pressure bead, since the pressure bead has no possibility of further outward movement in the radial direction, this solution can achieve reliable locking of the light guide part through the rigid ring, avoiding the unplanned detachment of the light guide tube from the cold light source host.

[0016] At the same time, when the relative positions of the two are adjusted to the first relative position by the driving component, the light guide can be inserted into the locking component, and further pulling and final locking operations can be completed through further actions of the driving component. When the light guide needs to be pulled out, the second relative position can be restored to the first relative position. Therefore, this solution also has the characteristics of simple structure and convenient use.

[0017] At the same time, the pull ring and the fixed ring are elastically supported on the main body. The elastic constraint not only makes the present solution have a compact structure, but also, during the process of the drive component pulling the pull ring, the load of the drive component can change continuously and relatively evenly, which can not only protect the drive component, but also in the second relative position, if the drive component is configured to include a drive motor and a linear motion component, the linear motion component includes a transmission screw and a nut threadedly connected to the transmission screw, the nut is fixedly connected to the rigid ring through a pull plate, and the drive motor is used to drive the transmission screw to rotate around the axis of the transmission screw at a fixed position, so that the restoring force of the support structure realized by the elastic support can be used for locking the drive component state, that is, after the drive motor is powered off, the force transmitted to the nut through the pull plate is loaded on the corresponding connecting thread, which can be used to achieve the locking of the nut on the transmission screw.

[0018] In specific application, the flexible ring is arranged on the inner side of the rigid ring near one end of the host body. Preferably, the inner wall of the rigid ring near one end of the host body is provided with a first annular groove, and the first annular groove makes the channel on the inner side of the rigid ring a stepped hole. The flexible ring is fixed in the first annular groove, and a boss is arranged on the outer side of the fixed ring near one end of the host body, and an avoidance hole for the boss to pass through the flexible ring is arranged on the inner side of the flexible ring. When the pull ring and the fixed ring are misaligned with each other so that the step surface of the first annular groove is supported on the boss, in the process of the pull ring further moving toward one side of the host body, the rigid ring provides a direct pulling effect for the fixed ring through the boss to ensure that the light guide part It can be reliably pulled to the set position; preferably, in the application of the above example, in order to ensure that the pull ring moves away from the main body to release the light guide part, the pull ring and the fixed ring can be misaligned so that the flexible ring moves to the outside of the pressure bead, so that the pressure bead can be embedded in the flexible ring to provide a space for pulling out the light guide part. A support plate is fixed to one end of the rigid ring close to the main body. When the rigid ring moves under the action of the driving assembly to the point where the support plate contacts the inner end of the fixed ring, the rigid support provided by the support plate to the fixed ring and the constraint of the front end of the fixed ring by the following baffle plate reset the two to the state where the flexible ring is located outside the pressure bead / the outer opening of the through hole is facing the flexible ring.

[0019] As a further technical solution of the endoscope cold light source assembly:

[0020] As a specific implementation of the locking assembly, the locking assembly further includes a baffle, one end of which is fixed to the plug-in hole of the host body, and a cavity having a first boundary and a second boundary is formed inside the baffle;

[0021] The first boundary is used to provide constraints for the outer side of the rigid ring to constrain the position of the pull ring in the radial direction of the plug hole;

[0022] The second boundary is used to provide a constraint for the end of the rigid ring away from the host body, so as to constrain the position of the pull ring in the axial direction of the plug hole.

[0023] In the present scheme, the baffle is used to form a constraint boundary for the pull ring, specifically: the first boundary is used to form a radial constraint on the rigid ring to prevent the pull ring from shifting sideways in the radial direction of the plug-in hole, and the second boundary is used to form an axial constraint on the rigid ring to constrain the pull ring between the second boundary and the main body. In specific implementation, the baffle can be set as a cylindrical structure with an inwardly folded retaining edge at the front end, and the first boundary is provided by the inner wall of the cylindrical structure, and the second boundary is provided by the inner side of the retaining edge. The baffle can also be set as a bent plate with a bend at the front end. In order to achieve anti-warping constraints on various positions of the pull ring in the circumferential direction, the number of baffles is greater than 1 and is evenly distributed relative to the axis of the plug-in hole. The rear end of the baffle is fixed on the main body, and the front end of the baffle is bent inward. The first boundary is formed by the inner side wall of each baffle, and the second boundary is formed by the inner end face of the bend. Preferably, in order to limit the terminal position of the forward movement of the fixed ring by the baffle, the width of the baffle and the bend satisfies: when the fixed ring moves forward, the baffle or the bend provides support for the front end of the fixed ring to constrain the terminal position of the forward movement of the fixed ring.

[0024] As a specific implementation of the pull ring and the fixing ring, the pull ring and the fixing ring are both circular ring structures coaxial with the plug hole, and the number of the pressing beads is multiple, and the pressing beads are arranged on the fixing ring at intervals;

[0025] A first annular groove is arranged on the inner side of one end of the pull ring close to the main body, and the flexible ring is a circular ring structure embedded in the first annular groove;

[0026] The groove is a second annular groove coaxial with the light guide portion.

[0027] In the present solution, the structural form of the pull ring and the fixed ring and their relative positions to the plug-in hole are intended to form a plug-in channel on the inner side of the fixed ring that is adapted to the light guide part, which is generally a cylindrical structure; the arrangement of multiple pressed beads, which are spaced apart on the fixed ring, is intended to provide a technical solution that can have multiple pulling points and fixing points in the circumferential direction of the light guide part, so as to reduce the degree of skewness of the light guide part after the plug-in is completed, and to ensure the coaxiality of the light guide part and the plug-in hole. The spaced arrangement is preferably evenly arranged along the circumferential direction of the fixed ring; the fixing form of the flexible ring on the rigid ring is intended to provide a technical solution in which a single flexible ring can act on all pressed beads; the setting form of the groove is intended to provide a technical solution in which a single second annular groove can adapt to all pressed beads, so as to achieve the purpose of simplifying the structure of the present solution and facilitating the assembly of various components.

[0028] Preferably, since the host body has a light source signal receiving board fixed by a signal board fixing frame, the plug-in hole includes a through hole located at the center of the light source signal receiving board, the head end of the light guide has a PIN needle, and the light source signal receiving board is equipped with a pinhole matching the position of the PIN needle. To ensure that the light guide can be inserted into the plug-in hole at a specified angle, a guide groove or guide rib is provided on the inner side of the fixing ring, and an adapted guide rib or guide groove is provided on the outer wall of the light guide to constrain the rotation angle of the light guide during insertion through the corresponding guide groove and guide rib, so that the PIN needle and the pinhole have a correct positional relationship when the light guide is inserted. As an alternative, it can also be arranged that a guide column is provided at the head end of the light guide, and a guide hole eccentric to the plug-in hole is provided on the light source signal receiving board, and the guide hole is used to insert the guide column when the light guide is plugged in.

[0029] As a specific implementation form of the drive component, the drive component includes a drive motor fixed to the main body through a motor frame, a pull plate is connected to the rotor of the drive motor through a linear motion component, the pull plate is fixedly connected to a rigid ring, and the linear motion component is used to convert the rotational motion output by the drive motor into linear motion.

[0030] When the present solution is used in practice, the linear motion assembly converts the rotational motion output by the drive motor into linear motion, thereby driving the rigid ring to reciprocate along the axis of the plug hole. The linear motion assembly can be implemented by including the above nut and a transmission screw threadedly connected to the nut. The rotor of the drive motor can be processed into the transmission screw, or a transmission screw can be coaxially fixed on the rotor of the drive motor. When the transmission screw rotates, the rotation constraint member acting on the nut constrains the nut to move linearly along the axis of the transmission screw.

[0031] Furthermore, the number of the drive assemblies is greater than 1, and the pull plates on different drive assemblies have different connection positions on the rigid ring, and the connection positions are evenly arranged in the circumferential direction of the rigid ring;

[0032] It also includes a guide assembly, which serves as a guide mechanism for the movement of the pull ring when the pull ring moves under the action of the driving assembly.

[0033] In the above scheme, the number of drive components and the connection position of each drive component on the rigid ring are set to provide a technical solution that uses each drive component to provide synchronous pulling to the rigid ring to avoid the rigid ring from being skewed in the circumferential direction; the guide mechanism is used to further constrain the motion trajectory of the rigid ring to ensure the accuracy of the motion trajectory of the rigid ring. When the pull ring is skewed, the eccentric wear between it and the baffle will cause different drive motors to have loads with large differences. Preferably, in order to ensure the reliability of the locking assembly clamping the light guide, each drive motor is equipped with a current monitoring device, so as to monitor the working parameters of each drive motor through the current monitoring device, and use the current difference as the judgment condition to determine whether each drive component has a consistent pace, so as to avoid the unreliable locking of the light guide due to the skewness of the rigid ring.

[0034] In order to ensure the squeezing effect of the flexible ring on the fixed ring, a pre-tightening mechanism is also provided on the rigid ring, and the pre-tightening mechanism is used to adjust the squeezing force of the inner wall of the flexible ring squeezing the outer wall of the fixed ring.

[0035] In this solution, for the flexible ring installed on the inner side of the rigid ring through the step hole, the pre-tightening mechanism can be configured as: including a pressure ring fitted with the outer side of the flexible ring and a pre-tightening screw threaded on the rigid ring, the inner side of the pre-tightening screw is squeezed on the pressure ring, and when the extrusion force needs to be adjusted, the extrusion force of the pressure ring on the flexible ring is adjusted by rotating the pre-tightening screw, thereby changing the extrusion force of the inner wall of the flexible ring against the outer wall of the fixed ring.

[0036] As a technical solution in which before the light guide part is initially fixed, the pull ring and the fixing ring on the assembly can automatically adapt to the state in which the light guide part can complete the initial fixation, after the light guide part is initially fixed, the assembly can automatically perform further pulling action, and after the light guide part reaches the set position, the locking assembly can automatically stop the action, and also includes a sensor for detecting the insertion depth of the light guide part in the plug hole, and the sensor is connected to the control module of the drive assembly by data;

[0037] When the locking assembly releases the light guide, the driving assembly drives the pull ring to move in the radial direction of the plug hole so that the flexible ring is located outside the pressing bead;

[0038] When the sensor identifies that the pressure bead is embedded in the groove, the driving component performs a locking action under the control of the control module, and the locking action is: the driving component drives the pull ring to move toward the side where the host body is located. During the movement of the pull ring, the friction force of the flexible ring on the fixed ring drives the fixed ring to move toward the side where the host body is located. As the fixed ring moves toward the host body, the support force of the host body on the fixed ring continues to increase; when the fixed ring moves to the point where the friction force is insufficient to overcome the support force of the host body on the fixed ring, the fixed ring further moves to the second relative position of the two, and the light guide further penetrates into the plug hole under the pull of the pressure bead;

[0039] When the sensor identifies that the insertion depth of the light guide portion in the plug hole reaches a set position, the driving assembly stops moving under the control of the control module.

[0040] In the above scheme, the sensor is used to detect the insertion depth of the light guide in the plug hole. The sensor transmits the insertion depth detection result to the control module through the data connection with the control module. The state of the locking assembly releasing the light guide is the state that the light guide is not inserted into the plug hole. In this state, the relative position of the pull ring and the fixed ring is adjusted by the driving assembly, so that the flexible ring is located outside the pressure bead to adapt to the pressure bead being embedded in the flexible ring during the insertion of the light guide, so that the light guide can be further inserted by embedding in the flexible ring; after the sensor's detection result determines that the initial fixation is completed, the driving assembly is activated to pull the light guide so that it is further inserted into the plug hole and the pull ring and the fixed ring are misaligned to change to a state where the rigid ring constrains the outside of the pressure bead; after the sensor recognizes that the set position has been reached, the driving assembly stops the action and uses the pressure bead to constrain the light guide to a locked state. Further, when the locking assembly performs the action of releasing the light guide, the corresponding instruction can be provided to the control module of the locking assembly by operating a button on the light guide, a human-computer interaction screen of the endoscope, or other input devices, and the locking assembly performs the action of releasing the light guide under the instruction.

[0041] It is easy to understand that the driving assembly acts directly on the rigid ring, so the rigid ring and the pull plate have the characteristics of synchronous movement. The relative misalignment between the pull ring and the fixed ring is determined by the change of the movement resistance of the fixed ring. When technical personnel in this field implement this solution, according to specific settings, the process of relative misalignment may occur throughout the movement of the rigid ring, or the pull ring and the fixed ring may not be relatively misaligned in the initial stage of the rigid ring movement.

[0042] As a sensor implementation method with a simple structure and reliable detection results, the sensor includes a photoelectric sensor and a photoelectric baffle, and the photoelectric sensor obtains different inspection results according to different swing angles of the photoelectric baffle;

[0043] The photoelectric baffle is arranged in the plug-in hole, and the light guide part pushes the photoelectric baffle to swing through the optical fiber tube at the front end thereof.

[0044] In the above scheme, as the insertion depth of the light guide part in the plug hole increases, when the optical fiber tube at the front end of the light guide part pushes on the photoelectric baffle, the photoelectric baffle can be forced to swing a certain angle, and the swing angle increases with the increase of the insertion depth. In this way, the photoelectric baffle is used to adjust the transmission, blocking, reflection or interference of light, etc., and the insertion depth of the light guide part in the plug hole can be obtained by using the relationship between the swing angle and the insertion depth and the different detection results of the photoelectric sensor under different swing angles of the photoelectric baffle. In this scheme, the state of the photoelectric baffle is associated with the insertion depth of the optical fiber tube, which is different from using the optical fiber tube as the only influencing structure of the light field. It is determined by the structure and surface conditions of the head end of the optical fiber tube. During the further insertion of the optical fiber tube, the influence of different insertion depths on the light field may be the same. Therefore, the sensor including only the light emitting end and the receiving end may not be able to reliably measure the change of the light guide part from the initial fixed position to the set position. In this scheme, the photoelectric baffle is used as a light field interference component and is linked with the light guide part, which can effectively solve the above problems under the condition of simple structure.

[0045] As described above, in order to enable the pull ring to reliably push the fixed ring to a state where the pressure bead can be embedded in the flexible ring when moving forward, it also includes a support plate fixed on the end of the rigid ring close to the main body. When the pull ring moves away from the main body, the support plate is used to provide the fixed ring with a thrust away from the main body.

[0046] In the present solution, when the locking assembly performs the action of loosening the light guide part, when the support plate moves to a forward position with the pull ring, the support plate is utilized to provide rigid support for the rear end of the fixed ring so that the fixed ring can move forward synchronously with the pull ring. After the action is completed, the relative position of the fixed ring and the pull ring is the position where the press bead can be embedded in the flexible ring, so as to prepare for the next completion of the preliminary fixation of the light guide part on the locking assembly.

[0047] As a specific application of the endoscope cold light source assembly, the present solution also relates to an endoscope, which includes the endoscope cold light source assembly as described in any one of the above items.

[0048] The present invention has the following beneficial effects:

[0049] This solution provides a structural basis for the process of inserting the light guide into the host body, including preliminary fixation, further pulling, and final locking. It conforms to the user's general habit of inserting the light guide tube, and can ensure the docking quality of the light guide part and the host body. This solution can achieve reliable locking of the light guide part through a rigid ring to avoid the unplanned detachment of the light guide tube from the cold light source host; at the same time, this solution also has the characteristics of simple structure and convenient use; at the same time, by utilizing the elastic support provided by the host body, this solution has the characteristics of compact structure, can provide rigid collision protection for the moving parts thereon to protect the drive assembly, and can provide a locking function for the state of the drive assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a structural schematic diagram reflecting the coordination relationship between the cold light source host and the light guide part in a specific embodiment of the prior art;

[0051] Figure 2 This is a structural schematic diagram reflecting the coordination relationship between the cold light source host and the light guide part in a specific embodiment of the endoscope cold light source assembly described in this solution;

[0052] Figure 3 This is a structural schematic diagram of the position of the plug hole in a specific embodiment of the endoscope cold light source assembly described in this solution;

[0053] Figure 4 This is a structural schematic diagram reflecting the matching relationship between the light guide part and the locking assembly in a specific embodiment of the endoscope cold light source assembly described in this scheme. In this schematic diagram, the light guide part is in a position where the preliminary fixation is not completed;

[0054] Figure 5 A schematic diagram of a structure reflecting the structural form of a sensor and the functional relationship between the sensor and the light guide in a specific embodiment of the endoscope cold light source assembly described in the present solution. In the schematic diagram, the light guide is in a position where preliminary fixation has not been completed;

[0055] Figure 6 This is a structural schematic diagram reflecting the matching relationship between the light guide part and the locking assembly in a specific embodiment of the endoscope cold light source assembly described in this scheme. In this schematic diagram, the light guide part is in a preliminary fixed position;

[0056] Figure 7 A schematic diagram of a structure reflecting the sensor structure and the working relationship between the sensor and the light guide in a specific embodiment of the endoscope cold light source assembly described in the present solution, in which the light guide is in a preliminarily fixed position or is pulled to a set position;

[0057] Figure 8 This is a structural schematic diagram reflecting the assembly method of the pre-tightening mechanism and the support plate in a specific embodiment of the endoscope cold light source assembly described in this solution.

[0058] The reference numerals in the figure are: 1, cold light source host, 101, host body, 10101, photoelectric sensor, 10102, photoelectric baffle, 102, locking assembly, 10201, pull ring, 1020101, rigid ring,

[0059] 1020102, flexible ring, 1020103, pre-tightening mechanism, 1020104, support plate, 10202, fixing ring, 10203, pressure bead, 10204, baffle, 10205, guide assembly, 10211, drive motor, 10212, linear motion assembly, 10213, pull plate, 10214, motor frame, 10221, light source signal receiving board, 10222, signal board fixing frame, 2, light guide part, 201, button. DETAILED DESCRIPTION

[0060] The present invention is further described in detail below in conjunction with embodiments, but the present invention is not limited to the following embodiments:

[0061] Embodiment 1:

[0062] like Figures 1 to 8 As shown, an endoscope cold light source assembly includes a cold light source host 1 and a light guide 2, wherein a host body 101 of the cold light source host 1 is provided with a plug hole for plugging the light guide 2, and further includes a locking assembly 102 for locking the light guide 2 on the cold light source host 1, wherein the locking assembly 102 includes a pull ring 10201 and a fixing ring 10202, both of which are annular structures, and the fixing ring 10202 is arranged on the inner side of the pull ring 10201;

[0063] The pull ring 10201 includes a rigid ring 1020101 and a flexible ring 1020102 fixed inside the rigid ring 1020101, and the inner wall of the flexible ring 1020102 is elastically pressed on the outer wall of the fixed ring 10202;

[0064] The fixing ring 10202 is provided with a through hole penetrating the side wall of the fixing ring 10202, and a pressing bead 10203 is provided in the through hole;

[0065] The pull ring 10201 and the fixing ring 10202 are both arranged on the host body 101 and located at the plug hole. The pull ring 10201 and the fixing ring 10202 are elastically supported on the host body 101. The inner side of the fixing ring 10202 forms an insertion channel for the light guide 2 to be inserted into the plug hole.

[0066] The locking assembly 102 further includes a driving assembly, which acts on the rigid ring 1020101 and is used to drive the pull ring 10201 to reciprocate in the axial direction of the plug hole. The outer wall of the light guide portion 2 has a groove for embedding the pressing bead 10203.

[0067] Under the action of the driving assembly, the pull ring 10201 and the fixed ring 10202 can slide relative to each other in the axial direction of the plug-in hole, and in the radial direction of the plug-in hole, the relative positions of the two can slide as follows: in the first relative position, the flexible ring 1020102 is located on the outside of the pressed bead 10203, and in the process of inserting the light guide part 2 into the plug-in hole, the pressed bead 10203 is embedded in the flexible ring 1020102, allowing the pressed bead 10203 to be embedded in the groove; in the second relative position, the pressed bead 10203 is embedded in the groove, the rigid ring 1020101 is located on the outside of the pressed bead 10203, and the pressed bead 10203 is supported on the inner wall of the rigid ring 1020101.

[0068] When the present solution is specifically applied to an endoscope, the light guide part 2 serves as the head end of the light guide tube, that is, the light guide part 2 is used to connect the light guide tube to the cold light source host 1, the plug-in hole serves as the connection hole on which the light guide part 2 is connected to the host body 101, and the locking assembly 102 serves as a component on the host body 101 for locking the light guide part 2. In use, taking the plug-in hole provided at the front end of the host body 101 as an example, the plug-in process of the light guide part 2 and the process of locking the light guide part 2 by the locking assembly 102 are as follows: before the light guide part 2 is inserted into the plug-in hole from the front end of the host body 101, the pull ring 10201 and the fixing ring 10202 cooperate to form a hole position where the flexible ring 1020102 is located outside the through hole, that is, the first position. For example, the pull ring 10201 and the fixing ring 10202 both move to the front end of their respective motion trajectories. At this time, the pressing bead 10203 and the flexible ring 1020102 are located at the plug-in hole. At the same axial position, the through hole is a channel along the radial direction of the plug-in hole, the depth of the through hole is smaller than the diameter of the bead 10203, the diameter of the hole opening inside the through hole or the diameter of the through hole near the inside is smaller than the diameter of the bead 10203, so as to prevent the bead 10203 from slipping out of the hole opening inside the through hole. In the process of inserting the light guide 2 into the plug-in hole, before the bead 10203 is embedded in the groove, the bead 10203 is embedded in the flexible ring 1020102 under the pressure of the outer side of the light guide 2 on the inner side of the bead 10203. The yielding action of the bead 10203 allows the light guide 2 to be further inserted until it is inserted into the groove where the bead 10203 is embedded. When the bead 10203 is embedded in the groove, the person inserting the light guide 2 can sense the change in resistance to the elastic rebound of the bead 10203 hitting the light guide 2 and the insertion of the light guide 2. After completing the operation, the initial fixation of the light guide 2 on the host body 101 is achieved.Then, the driving component is activated, and the driving component acts on the rigid ring 1020101 and pulls the pull ring 10201 backward. In this process, the friction force on the fixed ring 10202 generated by the elastic squeezing of the inner wall of the flexible ring 1020102 on the outer wall of the fixed ring 10202 forces the fixed ring 10202 to move backward, and the normal force of the pressure bead 10203 on the light guide part 2 forces the light guide part 2 to move synchronously with the fixed ring 10202. With the increase of the backward movement distance of the fixed ring 10202, when the force of the main body 101 on the fixed ring 10202 increases to the point where the friction force is insufficient to further drive the fixed ring 10202 to move or maintain the original displacement state, the pull ring 10201 and the fixed ring 10202 are misaligned or further moved. The pull ring 10201 moves backward or further backward relative to the fixed ring 10202, so that the relative positions of the two slide to the second relative position, that is, the rigid ring 1020101 is located on the outside of the pressing bead 10203, and the pressing bead 10203 is clamped between the rigid ring 1020101 and the groove. When the pull ring 10201 moves backward to the set position, the driving assembly stops moving, and the matching relationship between the pull ring 10201 and the fixed ring 10202 is maintained in a state where the outer side of the pressing bead 10203 is supported on the inner side of the rigid ring 1020101. At this time, the rigid constraint provided by the outer side of the pull ring 10201 for the pressing bead 10203 is used to lock the light guide part 2 on the main body 101 to complete the final locking. When the light guide 2 needs to be pulled out, the driving assembly is used to restore the positions of the pull ring 10201 and the fixing ring 10202 in the axial direction of the plug hole to the first relative position. At this time, the light guide 2 and the light guide tube can be pulled outward to make the pressing bead 10203 embed into the flexible ring 1020102 under the force of the groove wall and the outer side surface of the light guide 2, providing a giving way action for the light guide 2 to be pulled out.

[0069] In summary, the structural design of the pull ring 10201, the matching relationship between the pull ring 10201 and the fixed ring 10202, and the elastic support of the main body 101 for the pull ring 10201 and the fixed ring 10202, make the pull ring 10201 and the fixed ring 10202 staggered with each other to realize the switchable constraint state provided by the pull ring 10201 for the press bead 10203, the matching relationship between the fixed ring 10202 and the pull ring 10201 provides a structural basis for further pulling the light guide part 2, and the driving component serves as the power element of the locking component 102.

[0070] Compared with the prior art: this solution provides a structural basis for the process of inserting the light guide part 2 into the host body 101, including preliminary fixation, further pulling, and final locking, which conforms to the general habit of users to insert the light guide tube on the cold light source host 1. At the same time, after the preliminary fixation, the light guide part 2 can be further pulled to ensure the plug-in quality of the light guide part 2 and the host body 101. When the pull ring 10201 and the fixing ring 10202 are misaligned to the outside of the rigid ring 1020101 to constrain the pressure bead 10203, since the pressure bead 10203 does not have the possibility of further outward movement in the radial direction, this solution can achieve reliable locking of the light guide part 2 through the rigid ring 1020101, thereby avoiding the unplanned detachment of the light guide tube from the cold light source host 1.

[0071] At the same time, when the relative positions of the two are adjusted to the first relative position by the driving component, the light guide 2 can be inserted into the locking component 102, and further pulling and final locking operations can be completed through further actions of the driving component. When the light guide 2 needs to be pulled out, it can be restored from the second relative position to the first relative position. Therefore, this solution also has the characteristics of simple structure and convenient use.

[0072] At the same time, the pull ring 10201 and the fixed ring 10202 are both elastically supported on the main body 101. The elastic constraint not only makes the present solution have a compact structure, but also, in the process of the drive component pulling the pull ring 10201 after execution, the load of the drive component can change continuously and relatively evenly, which can not only protect the drive component, but also in the second relative position, if the drive component is set to include a drive motor 10211 and a linear motion component 10212, the linear motion component 10212 includes a transmission screw and a nut threadedly connected to the transmission screw, the nut is fixedly connected to the rigid ring 1020101 through a pull plate 10213, the drive motor 10211 is used to drive the transmission screw to rotate around the axis of the transmission screw at a fixed position, and the restoring force of the support structure of the elastic support can be used for locking the state of the drive component, that is: after the drive motor 10211 is powered off, the force transmitted to the nut through the pull plate 10213 is loaded on the corresponding connecting thread, which can be used to achieve the locking of the nut on the transmission screw.

[0073] In specific use, the flexible ring 1020102 is arranged on the inner side of the rigid ring 1020101 close to the host body 101. Preferably, the inner wall of the rigid ring 1020101 close to the host body 101 has a first annular groove, and the first annular groove makes the channel inside the rigid ring 1020101 a stepped hole. The flexible ring 1020102 is fixed in the first annular groove, and a fixed ring 10202 is arranged on the outer side of the fixed ring 10202 close to the host body 101. The boss is provided on the inner side of the flexible ring 1020102 with an avoidance hole for the boss to pass through the flexible ring 1020102. When the pull ring 10201 and the fixed ring 10202 are mutually offset so that the step surface of the first annular groove is supported on the boss, in the process of the pull ring 10201 further moving toward the side of the host body 101, the rigid ring 1020101 provides a direct pulling effect for the fixed ring 10202 through the boss, so as to ensure that the light guide part 2 can be reliably pulled to the set position; Preferably, in the above example, in order to ensure that the pull ring 10201 moves away from the host body 101 to release the light guide 2, the pull ring 10201 and the fixed ring 10202 can be misaligned so that the flexible ring 1020102 moves to the outside of the pressing bead 10203, so that the pressing bead 10203 is embedded in the flexible ring 1020102 to provide a space for pulling out the light guide 2, and a support plate 1 is fixed to one end of the rigid ring 1020101 close to the host body 101 020104, when the rigid ring 1020101 moves under the action of the driving assembly to the point where the support plate 1020104 contacts the inner end of the fixed ring 10202, the rigid support provided by the support plate 1020104 for the fixed ring 10202 and the constraint of the baffle 10204 on the front end of the fixed ring 10202 reset the two to a state where the flexible ring 1020102 is located on the outside of the pressure bead 10203 / the outer opening of the through hole is facing the flexible ring 1020102.

[0074] Embodiment 2:

[0075] This embodiment is further refined on the basis of embodiment 1:

[0076] As a specific implementation of the locking assembly 102, the locking assembly 102 further includes a baffle 10204, one end of the baffle 10204 is fixed to the plug hole position of the host body 101, and the inner side of the baffle 10204 forms a cavity having a first boundary and a second boundary;

[0077] The first boundary is used to provide constraints for the outer side of the rigid ring 1020101, so as to constrain the position of the pull ring 10201 in the radial direction of the plug hole;

[0078] The second boundary is used to provide a constraint for the end of the rigid ring 1020101 away from the host body 101, so as to constrain the position of the pull ring 10201 in the axial direction of the plug hole.

[0079] In this solution, the baffle 10204 is used to form a constraint boundary for the pull ring 10201, specifically: the first boundary is used to form a radial constraint on the rigid ring 1020101 to prevent the pull ring 10201 from shifting sideways in the radial direction of the plug hole, and the second boundary is used to form an axial constraint on the rigid ring 1020101 to constrain the pull ring 10201 between the second boundary and the host body 101. In specific implementation, the baffle 10204 can be set to a cylindrical structure with an inwardly folded retaining edge at the front end, and the inner wall of the cylindrical structure can be used to provide a The first boundary is provided, and the second boundary is provided through the inner side of the rib. The baffle 10204 can also be set as a bent plate with a bend at the front end. In order to realize the anti-tilting constraint of each position of the pull ring 10201 in the circumferential direction, the number of the baffles 10204 is greater than 1 and is evenly distributed relative to the axis of the plug hole. The rear end of the baffle 10204 is fixed on the host body 101, and the bend at the front end of the baffle 10204 is folded inward. The inner side wall of each baffle 10204 is used to form the first boundary, and the inner side end surface of the bend is used to form the second boundary. Preferably, in order to limit the terminal position of the forward movement of the fixed ring 10202 by the baffle 10204, the rib and the width of the bend meet the following conditions: when the fixed ring 10202 moves forward, the rib or bend is used to provide support to the front end of the fixed ring 10202 to constrain the terminal position of the forward movement of the fixed ring 10202.

[0080] Embodiment 3:

[0081] This embodiment is further refined on the basis of embodiment 1:

[0082] As a specific implementation of the pull ring 10201 and the fixing ring 10202, the pull ring 10201 and the fixing ring 10202 are both circular ring structures coaxial with the plug hole, and the number of the pressing beads 10203 is multiple, and the pressing beads 10203 are arranged on the fixing ring 10202 at intervals;

[0083] A first annular groove is provided on the inner side of one end of the pull ring 10201 close to the main body 101, and the flexible ring 1020102 is a circular ring structure embedded in the first annular groove;

[0084] The groove is a second annular groove coaxial with the light guide portion 2 .

[0085] In the present solution, the structural form of the pull ring 10201 and the fixed ring 10202 and their relative positions to the plug-in hole are intended to form a plug-in channel on the inner side of the fixed ring 10202 that is adapted to the light guide part 2, which is generally a cylindrical structure; the pressing beads 10203 are arranged in a plurality and at intervals on the fixed ring 10202, in order to provide a technical solution that can have multiple pulling points and fixing points in the circumferential direction of the light guide part 2, so as to reduce the degree of skewness of the light guide part 2 after the insertion is completed, and to ensure the coaxiality of the light guide part 2 and the plug-in hole, and the interval arrangement is preferably uniformly arranged along the circumferential direction of the fixed ring 10202; the fixing form of the flexible ring 1020102 on the rigid ring 1020101 is intended to provide a technical solution in which a single flexible ring 1020102 can act on all the pressing beads 10203; the setting form of the groove is intended to provide a technical solution in which a single second annular groove can adapt to all the pressing beads 10203, so as to achieve the purpose of simplifying the structure of the present solution and facilitating the assembly of various components.

[0086] Preferably, since the host body 101 has a light source signal receiving board 10221 fixed by a signal board fixing frame 10222, the plug-in hole includes a through hole located at the center of the light source signal receiving board 10221, the head end of the light guide 2 has a PIN pin, and the light source signal receiving board 10221 is equipped with a pinhole matching the position of the PIN pin. To ensure that the light guide 2 can be inserted into the plug-in hole at a specified angle, a guide groove or guide rib is provided on the inner side of the fixing ring 10202, and an adapted guide rib or guide groove is provided on the outer wall of the light guide 2, so that the rotation angle of the light guide 2 during insertion is constrained by the corresponding guide groove and guide rib, so that the PIN pin and the pinhole have a correct positional relationship when the light guide 2 is inserted. As an alternative, it can also be arranged that a guide column is provided at the head end of the light guide 2, and a guide hole eccentric to the plug-in hole is provided on the light source signal receiving board 10221, and the guide hole is used to insert the guide column when the light guide 2 is plugged in.

[0087] Embodiment 4:

[0088] This embodiment is further refined on the basis of embodiment 1:

[0089] As a specific implementation form of the drive component, the drive component includes a drive motor 10211 fixed to the host body 101 through a motor frame 10214, and a pull plate 10213 is connected to the rotor of the drive motor 10211 through a linear motion component 10212. The pull plate 10213 is fixedly connected to the rigid ring 1020101, and the linear motion component 10212 is used to convert the rotational motion output by the drive motor 10211 into linear motion.

[0090] When this solution is used in practice, the linear motion assembly 10212 converts the rotational motion output by the drive motor 10211 into linear motion, thereby driving the rigid ring 1020101 to reciprocate along the axis of the plug hole. The linear motion assembly 10212 can be implemented by including the above nut and a transmission screw threadedly connected to the nut. The rotor of the drive motor 10211 can be processed into the transmission screw, or a transmission screw can be coaxially fixed on the rotor of the drive motor 10211. When the transmission screw rotates, the rotation constraint member acting on the nut constrains the nut to move linearly along the axis of the transmission screw.

[0091] Embodiment 5:

[0092] This embodiment is further refined on the basis of Embodiment 4:

[0093] Furthermore, the number of the driving components is greater than 1, and the pull plates 10213 on different driving components have different connection positions on the rigid ring 1020101, and the connection positions are evenly arranged in the circumferential direction of the rigid ring 1020101;

[0094] It also includes a guide component 10205. When the pull ring 10201 moves under the action of the driving component, the guide component 10205 serves as a guide mechanism for the movement of the pull ring 10201.

[0095] In the above scheme, the number of drive components and the connection position of each drive component on the rigid ring 1020101 are set to provide a technical solution that uses each drive component to provide synchronous pulling to the rigid ring 1020101 to prevent the rigid ring 1020101 from being skewed in the circumferential direction; the guide mechanism is used to further constrain the motion trajectory of the rigid ring 1020101 to ensure the accuracy of the motion trajectory of the rigid ring 1020101. When the pull ring 10201 is skewed, the eccentric wear between it and the baffle 10204 will cause different drive motors 10211 to have loads with large differences. Preferably, in order to ensure the reliability of the locking component 102 clamping the light guide 2, each drive motor 10211 is equipped with a current monitoring device, so as to monitor the working parameters of each drive motor 10211 through the current monitoring device, and use the current difference as a judgment condition to determine whether each drive component has a consistent pace, so as to avoid the unreliable locking of the light guide 2 due to the skew of the rigid ring 1020101.

[0096] Embodiment 6:

[0097] This embodiment is further refined on the basis of embodiment 1:

[0098] In order to ensure the squeezing effect of the flexible ring 1020102 on the fixed ring 10202, a pre-tightening mechanism 1020103 is also provided on the rigid ring 1020101, and the pre-tightening mechanism 1020103 is used to adjust the squeezing force of the inner wall of the flexible ring 1020102 on the outer wall of the fixed ring 10202.

[0099] In the present solution, for the flexible ring 1020102 installed on the inner side of the rigid ring 1020101 through the step hole, the pre-tightening mechanism 1020103 can be configured as: including a pressing ring fitted with the outer side of the flexible ring 1020102 and a pre-tightening screw threadedly connected to the rigid ring 1020101, the inner side of the pre-tightening screw is squeezed on the pressing ring, and when the extrusion force needs to be adjusted, the extrusion force of the pressing ring on the flexible ring 1020102 is adjusted by rotating the pre-tightening screw, thereby changing the extrusion force of the inner wall of the flexible ring 1020102 squeezing the outer wall of the fixed ring 10202.

[0100] Embodiment 7:

[0101] This embodiment is further refined on the basis of embodiment 1:

[0102] As a technical solution in which before the light guide 2 is initially fixed, the pull ring 10201 and the fixing ring 10202 on the assembly can automatically adapt to the state in which the light guide 2 can complete the initial fixation, after the light guide 2 is initially fixed, the assembly can automatically perform further pulling action, and after the light guide 2 reaches the set position, the locking assembly 102 can automatically stop the action, and also includes a sensor for detecting the insertion depth of the light guide 2 in the plug hole, and the sensor is connected to the control module of the drive assembly by data;

[0103] When the locking assembly 102 releases the light guide 2, the driving assembly drives the pull ring 10201 to move in the radial direction of the plug hole so that the flexible ring 1020102 is located outside the pressing bead 10203;

[0104] When the sensor identifies that the pressing bead 10203 is embedded in the groove, the driving component performs a locking action under the control of the control module, and the locking action is: the driving component drives the pull ring 10201 to move toward the side where the host body 101 is located. During the movement of the pull ring 10201, the friction force of the flexible ring 1020102 on the fixed ring 10202 drives the fixed ring 10202 to move toward the side where the host body 101 is located. As the fixed ring 10202 moves toward the host body 101, the support force of the host body 101 on the fixed ring 10202 continues to increase; when the fixed ring 10202 moves to the point where the friction force is insufficient to overcome the support force of the host body 101 on the fixed ring 10202, the fixed ring 10202 further moves to the second relative position of the two, and the light guide 2 is pulled further into the plug hole by the pressing bead 10203;

[0105] When the sensor identifies that the insertion depth of the light guide 2 in the insertion hole reaches a set position, the driving component stops moving under the control of the control module.

[0106] In the above scheme, the sensor is used to detect the insertion depth of the light guide part 2 in the plug hole. The sensor transmits the insertion depth detection result to the control module through the data connection with the control module. The state in which the locking component 102 releases the light guide part 2 is the state in which the light guide part 2 is not inserted into the plug hole. In this state, the relative position of the pull ring 10201 and the fixed ring 10202 is adjusted by the driving component, so that the flexible ring 1020102 is located on the outside of the pressing bead 10203 to adapt to the pressing bead 10203 being able to pass through during the insertion of the light guide part 2. The light guide 2 is allowed to be further inserted by embedding the flexible ring 1020102; after the sensor detects that the initial fixation is completed, the driving component is activated, pulling the light guide 2 so that it is further inserted into the plug hole and the pull ring 10201 is misaligned with the fixing ring 10202, so as to change to a state where the rigid ring 1020101 constrains the outer side of the pressing bead 10203; after the sensor recognizes that the set position has been reached, the driving component stops the action and uses the pressing bead 10203 to constrain the light guide 2 to a locked state. Further, when the locking component 102 performs the action of releasing the light guide 2, the control module of the locking component 102 can be provided with corresponding instructions by operating, for example, the button 201 on the light guide 2, the human-machine interaction screen of the endoscope or other input devices, and the locking component 102 performs the action of releasing the light guide 2 under the instruction.

[0107] It is easy to understand that the driving assembly directly acts on the rigid ring 1020101, so the rigid ring 1020101 and the pull plate 10213 have the characteristics of synchronous movement, and the relative misalignment between the pull ring 10201 and the fixed ring 10202 is determined by the change of the movement resistance of the fixed ring 10202. When implementing this scheme, those skilled in the art may, based on specific settings, cause the relative misalignment to occur throughout the entire movement of the rigid ring 1020101, or may cause no relative misalignment between the pull ring 10201 and the fixed ring 10202 in the initial stage of the movement of the rigid ring 1020101.

[0108] Embodiment 8:

[0109] This embodiment is further refined on the basis of Embodiment 7:

[0110] As a sensor implementation method with a simple structure and reliable detection results, the sensor includes a photoelectric sensor 10101 and a photoelectric baffle 10102. The photoelectric sensor 10101 obtains different inspection results according to different swing angles of the photoelectric baffle 10102.

[0111] The photoelectric baffle 10102 is arranged in the plug-in hole, and the light guide part 2 pushes the photoelectric baffle 10102 to swing through the optical fiber tube at its front end.

[0112] In the above scheme, as the insertion depth of the light guide part 2 in the plug-in hole increases, when the optical fiber tube at the front end of the light guide part 2 pushes on the photoelectric baffle 10102, the photoelectric baffle 10102 is forced to swing at a certain angle, and the swing angle increases with the increase of the insertion depth. In this way, by utilizing the relationship between the swing angle and the insertion depth, the insertion depth of the light guide part 2 in the plug-in hole can be obtained through different detection results of the photoelectric sensor at different swing angles of the photoelectric baffle.

[0113] Embodiment 9:

[0114] This embodiment is further refined on the basis of embodiment 1:

[0115] As described above, in order to enable the pull ring 10201 to reliably push the fixed ring 10202 to a state where the pressure bead 10203 can be embedded in the flexible ring 1020102 when moving forward, the support plate 1020104 is also fixed on the end of the rigid ring 1020101 close to the main body 101. When the pull ring 10201 moves away from the main body 101, the support plate 1020104 is used to provide a thrust for the fixed ring 10202 to move away from the main body 101.

[0116] In the present solution, when the locking assembly 102 performs the action of loosening the light guide part 2, when the support plate 1020104 moves to a forward position along with the pull ring 10201, the support plate 1020104 is utilized to provide rigid support for the rear end of the fixed ring 10202 so that the fixed ring 10202 can move forward synchronously with the pull ring 10201. After the action is completed, the relative position of the fixed ring 10202 and the pull ring 10201 is the position where the pressing bead 10203 can be embedded in the flexible ring 1020102, so as to prepare for the next completion of the preliminary fixation of the light guide part 2 on the locking assembly 102.

[0117] Embodiment 10:

[0118] This embodiment is further refined on the basis of embodiment 1:

[0119] As a specific application of the endoscope cold light source assembly, the present solution also relates to an endoscope, which includes the endoscope cold light source assembly as described in any one of the above items.

[0120] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, other embodiments obtained without departing from the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An endoscope cold light source assembly, comprising a cold light source host (1) and a light guide (2), wherein a host body (101) of the cold light source host (1) is provided with a plug hole for plugging the light guide (2), and further comprising a locking assembly (102) for locking the light guide (2) on the cold light source host (1), characterized in that: The locking assembly (102) comprises a pull ring (10201) and a fixing ring (10202), both of which are annular structures, and the fixing ring (10202) is arranged on the inner side of the pull ring (10201); The pull ring (10201) comprises a rigid ring (1020101) and a flexible ring (1020102) fixed inside the rigid ring (1020101), wherein the inner wall of the flexible ring (1020102) is elastically pressed against the outer wall of the fixed ring (10202); The fixing ring (10202) is provided with a through hole penetrating the side wall of the fixing ring (10202), and a pressing bead (10203) is provided in the through hole; The pull ring (10201) and the fixing ring (10202) are both arranged on the host body (101) and located at the plug hole. The pull ring (10201) and the fixing ring (10202) are both elastically supported on the host body (101), and the inner side of the fixing ring (10202) forms an insertion channel for the light guide part (2) to be inserted into the plug hole. The locking assembly (102) further comprises a driving assembly, the driving assembly acting on the rigid ring (1020101) and used to drive the pull ring (10201) to reciprocate in the axial direction of the plug hole, and the outer wall of the light guide portion (2) comprises a groove for embedding a pressing bead (10203); Under the action of the driving component, the pull ring (10201) and the fixed ring (10202) can slide relative to each other in the axial direction of the plug-in hole, and in the radial direction of the plug-in hole, the relative positions of the two can slide as follows: in a first relative position, the flexible ring (1020102) is located outside the pressing bead (10203), and during the process of inserting the light guide portion (2) into the plug-in hole, the pressing bead (10203) is embedded in the flexible ring (1020102), allowing the pressing bead (10203) to be embedded in the groove; in a second relative position, the pressing bead (10203) is embedded in the groove, the rigid ring (1020101) is located outside the pressing bead (10203), and the pressing bead (10203) is supported on the inner wall of the rigid ring (1020101).

2. The endoscope cold light source assembly according to claim 1, characterized in that: The locking assembly (102) further comprises a baffle (10204), one end of the baffle (10204) being fixed to the plug hole of the host body (101), and a cavity having a first boundary and a second boundary being formed inside the baffle (10204); The first boundary is used to provide constraints for the outer side of the rigid ring (1020101) so as to constrain the position of the pull ring (10201) in the radial direction of the plug hole; The second boundary is used to provide a constraint for the end of the rigid ring (1020101) away from the host body (101), so as to constrain the position of the pull ring (10201) in the axial direction of the plug hole.

3. The endoscope cold light source assembly according to claim 1, characterized in that: The pull ring (10201) and the fixing ring (10202) are both circular ring structures coaxial with the plug-in hole, and the number of the pressing beads (10203) is multiple, and the pressing beads (10203) are arranged at intervals on the fixing ring (10202); A first annular groove is provided on the inner side of one end of the pull ring (10201) close to the main body (101), and the flexible ring (1020102) is a circular ring structure embedded in the first annular groove; The groove is a second annular groove coaxial with the light guide portion (2).

4. The endoscope cold light source assembly according to claim 1, characterized in that: The driving assembly comprises a driving motor (10211) fixed to a main body (101) via a motor frame (10214); a pull plate (10213) is connected to the rotor of the driving motor (10211) via a linear motion assembly (10212); the pull plate (10213) is fixedly connected to a rigid ring (1020101); and the linear motion assembly (10212) is used to convert the rotational motion output by the driving motor (10211) into linear motion.

5. The endoscope cold light source assembly according to claim 4, characterized in that: The number of the drive assemblies is greater than 1, and the pull plates (10213) on different drive assemblies have different connection positions on the rigid ring (1020101), and the connection positions are evenly arranged in the circumferential direction of the rigid ring (1020101); It also includes a guide assembly (10205), and when the pull ring (10201) moves under the action of the driving assembly, the guide assembly (10205) serves as a guide mechanism for the movement of the pull ring (10201).

6. An endoscope cold light source assembly according to any one of claims 1 to 5, characterized in that: The rigid ring (1020101) is also provided with a pre-tightening mechanism (1020103), and the pre-tightening mechanism (1020103) is used to adjust the extrusion force of the inner wall of the flexible ring (1020102) against the outer wall of the fixing ring (10202).

7. An endoscope cold light source assembly according to any one of claims 1 to 5, characterized in that: It also includes a sensor for detecting the insertion depth of the light guide (2) in the plug hole, the sensor being data-connected to a control module of the drive assembly; When the locking assembly (102) releases the light guide portion (2), the driving assembly drives the pull ring (10201) to move in the radial direction of the plug hole so that the flexible ring (1020102) is located outside the pressing bead (10203); When the sensor identifies that the pressure bead (10203) is embedded in the groove, the drive component performs a locking action under the control of the control module, wherein the locking action is as follows: the drive component drives the pull ring (10201) to move toward the side where the host body (101) is located, and during the movement of the pull ring (10201), the friction force of the flexible ring (1020102) on the fixed ring (10202) drives the fixed ring (10202) to move toward the side where the host body (101) is located, accompanied by the fixed ring (10202). The ring (10202) moves toward the host body (101), and the supporting force of the host body (101) on the fixed ring (10202) continues to increase; when the fixed ring (10202) moves to a point where the friction force is insufficient to overcome the supporting force of the host body (101) on the fixed ring (10202), the fixed ring (10202) further moves to a point where the relative position of the two is located at a second relative position, and the light guide portion (2) further penetrates into the plug hole under the pull of the pressing bead (10203); When the sensor identifies that the insertion depth of the light guide portion (2) in the plug hole reaches a set position, the drive component stops moving under the control of the control module.

8. The endoscope cold light source assembly according to claim 7, characterized in that: The sensor comprises a photoelectric sensor (10101) and a photoelectric baffle (10102), wherein the photoelectric sensor (10101) obtains different inspection results according to different swing angles of the photoelectric baffle (10102); The photoelectric baffle (10102) is arranged in the plug-in hole, and the light guide portion (2) pushes the photoelectric baffle (10102) to swing through the optical fiber tube at its front end.

9. An endoscope cold light source assembly according to any one of claims 1 to 5, characterized in that: It also includes a support plate (1020104) fixed to one end of the rigid ring (1020101) close to the main body (101), and when the pull ring (10201) moves in a direction away from the main body (101), the support plate (1020104) is used to provide a thrust for the fixed ring (10202) to move away from the main body (101).

10. An endoscope, characterized in that: The invention comprises an endoscope cold light source assembly as claimed in any one of claims 1 to 9.

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