Locking device and endoscope

Abstract

The application provides a locking device and an endoscope. The locking device comprises a supporting shaft, a rotating part, a bearing part, a locking washer and a blocking part. The locking washer is provided with sawteeth on the outer periphery. One end of the blocking part is detachably connected with the bearing part, and the other end is in abutment with the sawteeth to achieve clamping and fixing of the locking washer and the bearing part, so that displacement of the bearing part is avoided when the rotating part moves relative to the bearing part. The locking washer is tightly attached to one side surface of the bearing part, so that the pressure between the bearing part and the locking washer is stable. On the basis of fixing of the bearing part and the locking washer by the blocking part, the fixing state of the bearing part is further ensured, and the locking state is stable. Meanwhile, the bearing part can be fixed when the torque of the hand wheel knob is confirmed, and the torque does not need to be repeatedly confirmed many times, so that the efficiency is improved. In addition, the blocking part is low in cost, easy to disassemble, and reusable, and compared with the glue fixing scheme, the maintenance difficulty can be greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a locking device and an endoscope. Background Technology

[0002] An electronic endoscope is a medical electronic optical instrument that integrates advanced optical, mechanical, and electronic technologies, allowing direct observation, diagnosis, and treatment within human body cavities and organ cavities. During use, the electronic endoscope requires rotating a handwheel on its operating section to control the up-down and left-right movement of its tip. Furthermore, the handwheel needs to have both locked and unlocked states during surgery. The locked state facilitates the surgeon's operations, such as taking photographs or treating lesions at specific angles. Therefore, the stability of the force applied to the handwheel in both locked and unlocked states directly affects the stability of the intraoperative procedure.

[0003] Please see Figure 1 The existing locking device for the endoscope handwheel includes a rotating component 11, a supporting component 12, and a clamping component 13 sequentially mounted on a support shaft 10. The rotating component 11 is disposed on an extension of one side of the supporting component 12 and is threadedly connected to the extension; the clamping component 13 is fitted against the other side of the supporting component 12 to press and fix the supporting component 12. The rotating component 11 provides damping to the handwheel knob, and the stability of the damping provided by the rotating component 11 directly affects the stability of the locking state of the electronic endoscope. However, during the rotation of the rotating component 11, a force is generated on the supporting component 12, causing the supporting component 12 to slide relative to the rotating component 11. This changes the force between the supporting component 12 and the clamping component, resulting in instability in the locking state.

[0004] The existing solution is to fix the clamping member 13 and the supporting member 12 with glue to prevent displacement of the supporting member 12 and ensure stable rotation of the rotating member 11. However, this solution still has many drawbacks. For example, glue fixation can only be performed after the final torque is confirmed, but when confirming the torque after the actual adjustment, the rotating member 11 and the supporting member 12 will shift again, causing the result after adjustment to change, resulting in repeated waste of work. In addition, glue fixation makes it difficult to disassemble the clamping member 13 and the supporting member 12, making the repair of the lens very troublesome, requiring destructive disassembly first, which increases the difficulty of the repair work.

[0005] Therefore, there is an urgent need for a new locking device to avoid the drawbacks of glue fixation and to improve the stability of the locked state. Summary of the Invention

[0006] The purpose of this invention is to provide a locking device and an endoscope to solve at least one of the following problems: how to improve the stability of the locking state, how to improve the efficiency of handwheel knob torque confirmation, and how to reduce maintenance difficulty.

[0007] To solve the above-mentioned technical problems, the present invention provides a locking device, including a support shaft, a rotating component, a carrier component, a locking washer, and a blocking component; wherein, the rotating component, the carrier component, and the locking washer are sequentially disposed on the support shaft; the rotating component is sleeved on the carrier component and can move relative to the carrier component along the axial direction of the support shaft; the blocking component is detachably connected to the carrier component; the locking washer is attached to the side of the carrier component away from the rotating component, and the outer periphery of the locking washer is provided with serrations to engage with the blocking component.

[0008] Optionally, in the locking device, the carrier includes an annular base plate and a surrounding portion; the locking washer is attached to the annular base plate; the surrounding portion extends from the outer edge of the annular base plate toward the direction of the locking washer; the surrounding portion is provided with a groove to accommodate one end of the blocking member.

[0009] Optionally, in the locking device, the other end of the blocking member is bent toward the locking washer to abut against the serrations.

[0010] Optionally, in the locking device, the carrier further includes a connecting portion, which extends from the inner ring edge of the annular base plate toward the direction of the rotating member, and the rotating member is sleeved on the connecting portion.

[0011] Optionally, in the locking device, the outer and inner walls of the connecting part are provided with threads to be threadedly connected to the rotating part and the support shaft, respectively.

[0012] Optionally, in the locking device, the outer wall pitch of the connecting portion is smaller than the inner wall pitch.

[0013] Optionally, in the locking device, the minimum distance between the rotating member and the annular base plate is greater than or equal to 0.5 mm.

[0014] Optionally, in the locking device, the locking device includes a plurality of the blocking members, and the plurality of the blocking members are evenly distributed on the outer periphery of the carrier member.

[0015] Optionally, in the locking device, the locking device further includes a limiting member, which is sleeved on the end of the support shaft and adjacent to the locking washer.

[0016] Based on the same inventive concept, the present invention also provides an endoscope, the endoscope including the locking device.

[0017] In summary, this invention provides a locking device and an endoscope. The locking device features serrations on the outer periphery of the locking washer and includes a blocking member. One end of the blocking member is detachably connected to the carrier, while the other end abuts against the serrations, thus locking and securing the locking washer and the carrier, preventing displacement of the carrier when the rotating component moves relative to it. Furthermore, the locking washer is pressed against the side of the carrier away from the rotating component, ensuring stable force between the carrier and the locking washer; and further, based on the fixing of the carrier and the locking washer by the blocking member, it ensures the fixed and stable locking state of the carrier. Simultaneously, the carrier can be fixed by checking the torque of the handwheel knob, eliminating the need for repeated torque checks and improving efficiency. Moreover, the blocking member is not only low-cost but also easy to disassemble and reuse, significantly reducing maintenance difficulty.

[0018] Therefore, this invention not only improves the stability of the locking state and the efficiency of handwheel knob torque confirmation, but also reduces maintenance difficulty. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a locking device in the prior art;

[0020] Figure 2 This is a schematic diagram of the structure of a locking device according to an embodiment of the present invention;

[0021] Figure 3 This is a top view of a locking device according to an embodiment of the present invention;

[0022] The attached figures are labeled as follows:

[0023] 10-Support shaft; 11-Rotating component; 12-Bearing component; 13-Clamping component;

[0024] 20-Support shaft; 21-Rotating component; 22-Bearing component; 220-Annular base plate; 221-Enclosing part; 2210-Groove; 222-Connecting part; 23-Locking washer; 24-Blocking component; 25-Limiting component. Detailed Implementation

[0025] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clearly illustrate the objectives of the embodiments of the present invention. Furthermore, the structures shown in the drawings are often part of the actual structures. In particular, different figures may emphasize different aspects and sometimes use different scales. It should also be understood that, unless specifically stated or indicated, the terms "first," "second," "third," etc., in the specification are only used to distinguish the various components, elements, steps, etc., in the specification, and are not used to indicate the logical or sequential relationships between the various components, elements, steps, etc.

[0026] Please see Figure 2 This embodiment provides a locking device, including a support shaft 20, a rotating member 21, a carrier member 22, a locking washer 23, and a blocking member 24. The rotating member 21, the carrier member 22, and the locking washer 23 are sequentially disposed on the support shaft 20. The rotating member 21 is sleeved on the carrier member 22 and can move relative to the carrier member 22 along the axial direction of the support shaft 20. The blocking member 24 is detachably connected to the carrier member 22. The locking washer 23 is fitted against the side of the carrier member 22 away from the rotating member 21, and the outer periphery of the locking washer 23 is provided with serrations to engage with the blocking member 24. The side of the carrier member 22 refers to the side of the carrier member 22 along the axial direction of the support shaft 20 away from the rotating member 21.

[0027] As can be seen, in this embodiment, serrations are provided on the outer periphery of the locking washer 23, and the blocking member 24 is added. One end of the blocking member 24 is detachably connected to the carrier member 22, and the other end abuts against the serrations. The blocking member 24 and the serrations engage, thereby fixing the locking washer 23 and the carrier member 22, preventing displacement of the carrier member 22 when the rotating member 21 moves relative to the carrier member 22. Furthermore, the locking washer 23 is tightly attached to one side of the carrier member 22, ensuring stable force between the carrier member 22 and the locking washer 23; and based on the fixing of the carrier member 22 and the locking washer 23 by the blocking member 24, further ensuring the fixed state of the carrier member 22 and the stable locking state. At the same time, the carrier member 22 can be fixed when the torque of the handwheel knob is checked, without repeatedly checking the torque, improving efficiency. Furthermore, the blocking component 24 is not only low-cost but also easy to disassemble and reuse, significantly reducing maintenance difficulty compared to glue-based fixing methods. Therefore, the locking device provided in this embodiment not only improves the stability of the locking state and the efficiency of handwheel knob torque confirmation but also reduces maintenance difficulty.

[0028] The following is in conjunction with the appendix Figure 2-3 This embodiment provides a detailed description of the locking device.

[0029] Please continue reading. Figure 2 The locking device is used to cooperate with the knob on the endoscope handwheel to lock the knob in the locked state, facilitating operations such as taking pictures or treating lesions. The support shaft 20 is a metal rod with a threaded structure on its outer surface, allowing the rotating component 21, the carrier component 22, and the locking washer 23 to be sequentially mounted on the support shaft 20. Through their mutual cooperation, they lock the handwheel knob, ensuring the stability of the locked state. The locking washer 23 is threadedly connected to the support shaft 20, and the rotating component 21 and the carrier component 22 are slidably mounted on the support shaft 20. Furthermore, the rotating component 21 provides damping to the handwheel knob to ensure its locked state. One side of the rotating component 21 is positioned opposite the handwheel knob, and the other side is positioned opposite the carrier component 22, and it can move axially to press and lock the handwheel knob.

[0030] Please see Figure 2 and 3The supporting member 22 has an annular base plate 220 for fitting onto the supporting shaft 20. The locking washer 23 is able to conform to the side of the annular base plate 220 away from the rotating member 21, while the rotating member 21 is disposed on the other side of the annular base plate 220. The annular base plate 220 has a surrounding portion 221 extending toward the direction of the locking washer 23 on its outer circumference. It is understood that the surrounding portion 221 is integrally formed with the annular base plate 220 and surrounds the outer circumference of the annular base plate 220. Furthermore, the diameter of the annular base plate 220 is larger than the diameter of the locking washer 23, so the locking washer 23 can be located within the surrounding portion 221 and closely adhere to one side of the annular base plate 220. The surrounding portion 221 is provided with a groove 2210 for accommodating one end of the blocking member 24. That is, one end of the blocking member 24 is inserted into the groove to connect with the surrounding portion 221. The other end of the blocking member 24 is bent toward the locking washer 23 so as to abut against the serrations of the locking washer 23 inside the surrounding portion 221, thereby fixing the locking washer 23 and the carrier member 22 together. Optionally, the shape of the blocking member 24 may include, but is not limited to, an "L" shape, a "V" shape, a "W" shape, or a "U" shape. Further, the number of blocking members 24 may be 1, 2, 3, or 4, and the corresponding surrounding portion 221 is also provided with an equal number of grooves 2210 to cooperate with the operation of the blocking member 24. In this embodiment, the specific number and placement of the blocking members 24 are not specifically limited, but when multiple blocking members 24 are provided, the multiple blocking members 24 are evenly distributed on the outer periphery of the carrier member 22 so that the carrier member 22 and the locking washer 23 are subjected to balanced forces.

[0031] Furthermore, the inner ring edge of the annular base plate 220 has a connecting portion 222 extending toward one end of the rotating member 21, and the rotating member 21 is sleeved on the connecting portion 222. Similarly, the connecting portion 222 and the annular base plate 220 are integrally formed and are tubular, capable of being sleeved onto the support shaft 20. The outer and inner walls of the connecting portion 222 are threaded, allowing the connecting portion 222 to be threadedly connected to both the rotating member 21 and the support shaft 20. In addition, the rotating member 21 is also annular, and its ring has a threaded structure that matches the threaded outer wall of the connecting portion 222, enabling the rotating member 21 to move axially relative to the connecting portion 222. In other words, along the axial direction of the connecting portion 222, the rotating member 21 can rotate and move axially relative to the connecting portion 222 to move closer to and press against the handwheel knob, or move away from and release the handwheel knob.

[0032] Furthermore, since the connecting part 222 is also threadedly connected to the support shaft 20, to prevent the connecting part 222 from moving along with the rotating part 21 when it rotates relative to the connecting part 222, the outer wall pitch of the connecting part 222 is smaller than the inner wall pitch of the connecting part 222. This ensures that the connecting part 222 will not rotate relative to the support shaft 20 when the rotating part 21 rotates relative to the connecting part 222, thereby improving the connection stability of the bearing member 22. Furthermore, to avoid the rotating part 21 and the bearing member 22 being too close together in the initial state, making rotation difficult, the locking device provided in this embodiment sets the minimum distance between the rotating part 21 and the annular base plate 220 to be greater than or equal to 0.5 mm, so that the rotating part 21 can be rotated in the initial state.

[0033] Please continue reading. Figure 2 The locking device further includes a limiting member 25, which is sleeved on the end of the support shaft 20 and adjacent to the locking washer 23. The limiting member 25 can be used to press the locking washer 23 and restrict its movement toward the end of the support shaft 20. Further, the limiting member 25 is a nut with a threaded structure to threadedly engage with the support shaft 20. Moreover, both the locking washer 23 and the bearing member 22 have threaded structures within their rings, so that both the bearing member 22 and the locking washer 23 are threadedly engaged with the support shaft 20.

[0034] The above is a detailed introduction to each component of the locking device. The following describes the assembly process of the locking device and the operation process in the locked and unlocked states.

[0035] When assembling the locking device, the rotating member 21 is first rotated onto the connecting portion 222 of the bearing member 22, while maintaining a distance greater than or equal to 0.5 mm between the rotating member 21 and the annular base plate 220 to ensure rotation space. Then, the rotating member 21 and the bearing member 22 are fitted together onto the support shaft 20, and the locking washer 23 and the limiting member 25 are screwed into the support shaft 20 in sequence. Next, the locking washer 23 is rotated to fit tightly against one side of the annular base plate 220, and the torque is adjusted. Then, the limiting member 25 is rotated to one side of the locking washer 23 and the locking washer 23 is pressed to adjust the pressure between the locking washer 23 and the bearing member 22. Finally, one end of the blocking member 24 is inserted into the bearing member 22, and the other end is abutted against the serrations of the locking washer 23 to lock and fix the bearing member 22 and the locking washer 23. As can be seen, the locking device provided in this embodiment can fix the bearing member 22 when the torque of the handwheel knob is confirmed, without the need for repeated confirmation of the torque. During disassembly and maintenance, the blocking member 24 can be removed first, and then the limiting member 25, the locking washer 23, the bearing member 22 and the rotating member 21 can be removed in sequence.

[0036] In the locked state, rotating the rotating member 21 away from the annular base plate 220 presses the handwheel knob, thus achieving the locked state. In the released state, rotating the rotating member 21 closer to the annular base plate 220 releases the handwheel knob, thus achieving the released state. Under the action of the blocking member 24, the locking washer 23 locks the support member 22, keeping the support member 22 and the locking washer 23 fixed. Therefore, when the rotating member 21 rotates, the support member 22 will not shift with the movement of the rotating member 21, ensuring the stability of the locked state.

[0037] Based on the same inventive concept, this embodiment also provides an endoscope, which includes the locking device.

[0038] In summary, this embodiment provides a locking device and an endoscope. The locking device features serrations on the outer periphery of the locking washer 23 and includes a blocking member 24. One end of the blocking member 24 is detachably connected to the carrier member 22, and the other end abuts against the serrations, thus locking and fixing the locking washer 23 and the carrier member 22, preventing displacement of the carrier member 22 when the rotating member 21 moves relative to it. Furthermore, the locking washer 23 is tightly pressed against the side of the carrier member 22 away from the rotating member 21, ensuring stable force between the carrier member 22 and the locking washer 23; and further ensuring the fixed and stable locking state of the carrier member 22, based on the fixing of the carrier member 22 and the locking washer 23 by the blocking member 24. In addition, the blocking member 24 is not only low-cost but also easy to disassemble and reuse. Compared to glue-based fixing methods, the locking device provided in this embodiment can not only fix the bearing member 22 when the torque of the handwheel knob is confirmed, eliminating the need for repeated torque confirmation, but also significantly reduces maintenance difficulty.

[0039] Furthermore, it should be understood that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the technical solutions of the present invention based on the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the scope of protection of the present invention.

Claims

1. A locking device, characterized in that, The device includes a support shaft, a rotating component, a carrier component, a locking washer, and a blocking component. The rotating component, the carrier component, and the locking washer are sequentially mounted on the support shaft. The rotating component is threaded onto the carrier component and is axially movable relative to the carrier component along the support shaft. The carrier component is threaded onto the support shaft, and the blocking component is detachably connected to the carrier component. The locking washer is threaded onto the support shaft and fits against the side of the carrier component away from the rotating component. The locking washer has serrations on its outer periphery to engage with the blocking component.

2. The locking device according to claim 1, characterized in that, The support member includes an annular base plate and a surrounding portion; the locking washer is attached to the annular base plate; the surrounding portion extends from the outer edge of the annular base plate toward the locking washer; the surrounding portion is provided with a groove to accommodate one end of the blocking member.

3. The locking device according to claim 2, characterized in that, The other end of the blocking member is bent toward the locking washer to abut against the saw teeth.

4. The locking device according to claim 2, characterized in that, The support member further includes a connecting portion, which extends from the inner ring edge of the annular base plate toward the direction of the rotating member, and the rotating member is sleeved on the connecting portion.

5. The locking device according to claim 4, characterized in that, The outer and inner walls of the connecting part are both provided with threads to connect with the rotating part and the support shaft respectively.

6. The locking device according to claim 5, characterized in that, The pitch of the outer wall of the connecting part is smaller than the pitch of the inner wall.

7. The locking device according to claim 2, characterized in that, The minimum distance between the rotating component and the annular base plate is greater than or equal to 0.5 mm.

8. The locking device according to claim 1, characterized in that, The locking device includes a plurality of blocking members, and the plurality of blocking members are evenly distributed on the outer periphery of the bearing member.

9. The locking device according to claim 1, characterized in that, The locking device also includes a limiting member, which is sleeved on the end of the support shaft and adjacent to the locking washer.

10. An endoscope, characterized in that, The endoscope includes a locking device as described in any one of claims 1-9.

Images