Traction wheel self-locking assembly, endoscope handle, and endoscope

Abstract

The present application is applicable to the technical field of endoscopes, and provides a traction wheel self-locking assembly, an endoscope handle, and an endoscope. The traction wheel self-locking assembly is applied to the endoscope and comprises: a handle housing, and a traction wheel, a locking member and a support member that are arranged on the handle housing. The traction wheel is rotationally matched with the handle housing. The support member is arranged on a first side face of the traction wheel in an axial direction. The locking member is movably matched with the handle housing, and the locking member can move, relative to the handle housing, close to or away from a second side face of the traction wheel in the axial direction. Under the condition that the locking member abuts against the second side face of the traction wheel in the axial direction, the support member is supported on the first side face of the traction wheel in the axial direction. The support member in the present application provides support for the traction wheel, avoiding situations such as the traction wheel being offset due to abutment when the locking member locks the traction wheel.

Description

A traction wheel self-locking assembly, an endoscope handle, and an endoscope.

[0001] This application relates to the field of endoscope technology, and in particular to a traction wheel self-locking assembly, an endoscope handle, and an endoscope. Background Technology

[0002] In existing technology, the traction rope is pre-tensioned in the endoscope by rotating a traction wheel. After pre-tensioning, a self-locking component engages with the traction wheel, thus locking it in place. However, during this engagement, the traction wheel is prone to deformation, which can further affect the tension of the traction rope wound around it. Utility Model Content

[0003] The purpose of this application is to provide a traction wheel self-locking assembly, an endoscope handle, and an endoscope to solve the aforementioned technical problems existing in the prior art, mainly including the following:

[0004] The first aspect of this application provides a traction wheel self-locking assembly for use in an endoscope, comprising:

[0005] The handle housing and a traction wheel, a locking member, and a support member disposed on the handle housing, wherein the traction wheel is rotatably engaged with the handle housing;

[0006] The support member is disposed on the first side of the traction wheel along its axial direction;

[0007] The locking member is movably engaged with the handle housing, and the locking member can move closer to or further away from the second side of the traction wheel axis relative to the handle housing; when the locking member abuts against the second side of the traction wheel axis, the support member is supported on the first side of the traction wheel axis.

[0008] To further improve the implementation of this application, the following configuration structure is specifically adopted: when the locking member abuts against the second side of the traction wheel axially, the locking member is supported on the first position of the traction wheel, and the support member is supported on the second position of the traction wheel;

[0009] Wherein, the projection of the first position along the axial direction of the traction wheel onto the first side of the traction wheel is located on the line connecting the second position and the center of the first side of the traction wheel.

[0010] To further improve the implementation of this application, the following structure is specifically adopted: the handle housing is provided with a mounting hole, the mounting hole is provided with an internal thread, the locking member is provided with an external thread, and the locking member engages with the external thread through the internal thread to move the locking member closer to or further away from the second side of the traction wheel axially.

[0011] To further improve the implementation of this application, the following structure is specifically adopted: it also includes a spring, which is connected to the handle housing and the locking member respectively, and the spring can move the locking member away from the traction wheel.

[0012] To further improve the implementation of this application, the following structure is specifically adopted: the support member includes a support body and a reinforcing rib, and at least one reinforcing rib is provided on the outer wall of the support body, and the reinforcing rib extends in a direction away from the outer wall of the support body.

[0013] To further improve the implementation of this application, the following structure is specifically adopted: a guide surface is provided on one end of the support body adjacent to the first side of the traction wheel axis, and the guide surface is an arc-shaped surface.

[0014] To further improve the implementation of this application, the following structure is specifically adopted: the end face of the first side of the reinforcing rib adjacent to the axial direction of the traction wheel is set as an inclined surface, and the inclined surface is inclined in a direction away from the support body.

[0015] To further improve the implementation of this application, the following structure is specifically adopted: the support member is any one of cross-shaped, T-shaped, or L-shaped.

[0016] A second aspect of this application provides an endoscope handle, including the aforementioned traction wheel self-locking assembly.

[0017] A third aspect of this application provides an endoscope including the endoscope handle as described above.

[0018] This application has at least the following technical advantages over the prior art:

[0019] In this application, by setting a locking member and a supporting member on both sides of the traction wheel, when the traction wheel completes the pretensioning of the traction rope, the locking member moves closer to the second side of the traction wheel and abuts against the second side of the traction wheel to lock the traction wheel, while the supporting member abuts against the first side of the traction wheel to provide support for the traction wheel. This avoids the traction wheel being offset by the abutment when the locking member locks the traction wheel, or the traction wheel deforming after the locking member locks the traction wheel multiple times, causing the tension of the traction wheel on the traction rope to change, or even the traction rope to detach from the traction wheel. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a schematic diagram of the self-locking component on the handle housing in this application;

[0022] Figure 2 is a schematic diagram of the self-locking assembly of the traction wheel in this application in the handle housing;

[0023] Figure 3 is an enlarged view of part A in Figure 2;

[0024] Figure 4 is a schematic diagram of the structure of the traction wheel self-locking assembly in the handle housing in this application;

[0025] Figure 5 is a cross-sectional view of Figure 4 in the BB direction;

[0026] Figure 6 is an enlarged view of part F in Figure 5;

[0027] Figure 7 is a schematic diagram of the mounting holes on the handle housing in this application;

[0028] Figure 8 is a cross-sectional view of Figure 7 in the CC direction;

[0029] Figure 9 is a magnified view of part D in Figure 8;

[0030] Figure 10 is a schematic diagram of the installation of the support member in the handle housing;

[0031] Figure 11 is an enlarged view of part E in Figure 10.

[0032] In the picture:

[0033] Handle housing; 11-Mounting hole; 111-Internal thread;

[0034] Traction wheel; 21-First side; 22-Second side;

[0035] Locking element; 31 - External thread; 32 - Spring;

[0036] Support component; 41-Support body; 411-Guide surface; 42-Reinforcing rib; 421-Inclined surface. Detailed Implementation

[0037] The following description provides many different embodiments or examples for implementing various features of this application. The elements and arrangements described in the specific examples below are only for concise expression of this application and are merely examples, not intended to limit this application.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to represent selected embodiments of this application.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0040] In this application, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" a first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In existing technology, the traction rope is pre-tensioned in the endoscope by rotating a traction wheel. After pre-tensioning, a self-locking component engages with the traction wheel, thus locking it in place. However, during this engagement, the traction wheel is prone to deformation, which can further affect the tension of the traction rope wound around it.

[0042] In view of this, the first aspect of this application provides a traction wheel self-locking assembly for use in an endoscope, as shown in Figures 1-11, comprising:

[0043] The handle housing 10 includes a traction wheel 20, a locking member 30, and a support member 40 disposed on the handle housing 10. The traction wheel 20 is rotatably engaged with the handle housing 10. For example, the handle housing 10 includes a first sub-housing and a second sub-housing, which are mated together. The mating method can be snap-fit, adhesive, etc. The traction wheel 20 is installed inside the first sub-housing and can rotate relative to it. The traction wheel 20 can also be installed inside the second sub-housing; this is not limited to this configuration.

[0044] The support member 40 is disposed on the first side 21 of the traction wheel 20 in the axial direction; the locking member 30 is movably engaged with the handle housing 10, and the locking member 30 can move closer to or further away from the second side 22 of the traction wheel 20 in the axial direction relative to the handle housing 10; when the locking member 30 abuts against the second side 22 of the traction wheel 20 in the axial direction, the support member 40 is supported on the first side 21 of the traction wheel 20 in the axial direction.

[0045] In the above embodiments, the traction wheel 20 has a first side surface 21 and a second side surface 22 along the axial direction. One end of the support member 40 is disposed on the first side surface 21 of the traction wheel 20, and the support member 40 can move closer to or further away from the first side surface. For example, one end of the support member 40 can abut against the first side surface 21 of the traction wheel 20, and the other end is fixedly installed on the second sub-housing. The support member 40 can be fixedly connected to the inner wall of the second sub-housing by welding, bolting, snap-fitting, etc. When the support member 40 is connected to the second sub-housing by bolting, etc., the support member 40 can be promptly disassembled and replaced if wear or other problems occur. In some optional embodiments, the support member 40 can also be movably engaged with the second sub-housing, allowing the support member 40 to move closer to or further away from the first side surface 21 of the traction wheel 20 relative to the second sub-housing. The support member 40 can be movably engaged with the second sub-housing by threads or snap-fitting, etc.

[0046] The locking member 30 is disposed on the second side 22 of the traction wheel 20 and is movably mounted on the first sub-housing. When the traction wheel 20 has not completed the pre-tensioning of the traction rope, the locking member 30 is located away from the second side 22 of the traction wheel 20; when the traction wheel 20 has completed the pre-tensioning of the traction rope, the locking member 30 is located close to the second side 22 of the traction wheel 20 and abuts against the second side 22 to lock the traction wheel.

[0047] In this application, by providing locking members 30 and support members 40 on both sides of the traction wheel 20, when the traction wheel 20 pre-tensions the traction rope, the locking members 30 and support members 40 can move simultaneously or the locking members 30 can move closer to the corresponding surface of the traction wheel 20. When the locking members 30 abut against the second side 22 of the traction wheel 20 to lock the traction wheel 20, the support members 40 can abut against the first side 21 of the traction wheel 20 to provide support for the traction wheel 20. At the same time, the support members 40 assist the locking members 30 in locking the traction wheel 20, thus preventing the traction wheel 20 from shifting due to abutment when the locking members 30 locks it, or preventing the traction wheel 20 from deforming after the locking members 30 locks it multiple times, which would cause the tension of the traction wheel 20 on the traction rope to change, or even cause the traction rope to detach from the traction wheel 20.

[0048] According to some optional embodiments, when the locking member 30 abuts against the second side 22 of the traction wheel 20 in the axial direction, the locking member 30 abuts against the first position of the traction wheel 20, and the support member 40 supports the second position of the traction wheel 20.

[0049] Wherein, the projection of the first position along the axial direction of the traction wheel 20 onto the first side 21 of the traction wheel 20 is located on the line connecting the second position and the center of the first side 21 of the traction wheel 20.

[0050] In the above scheme, the locking member 30 abuts against the second side 22 of the traction wheel 20 at the first position, and the supporting member 40 supports the first side 21 of the traction wheel 20 at the second position. For example, if the first position of the locking member 30 abutting against the second side 22 of the traction wheel 20 is point P, then the second position of the supporting member 40 abutting against the first side 21 of the traction wheel 20 can be point N, where point N is directly aligned with point P. This effectively locks the traction wheel 20 while ensuring that the traction wheel 20 does not shift or deform.

[0051] In some optional embodiments, the first position where the locking member 30 abuts against the second side 22 of the traction wheel 20 can be located between the center of the traction wheel 20 and the second position. This can be understood as the first position P being located between the line connecting the center O and the second position N. With this arrangement, when the locking member 30 abuts against the traction wheel 20, the support member 40 can still provide sufficient support force to ensure the integrity of the traction wheel 20 and prevent problems such as displacement and deformation.

[0052] According to some optional embodiments, the handle housing 10 is provided with a mounting hole 11, the mounting hole 11 is provided with an internal thread 111, the locking member 30 is provided with an external thread 31, and the locking member 30 is engaged with the external thread 31 through the internal thread 111 to make the locking member 30 move closer to or away from the second side 22 of the traction wheel 20 in the axial direction.

[0053] In the above scheme, the locking member 30 has a rod-shaped structure, preferably a screw or bolt. A through hole, which is a mounting hole 11, is provided on the first sub-housing of the handle housing 10 for engaging with the locking member 30. A force-applying part is provided on the portion of the locking member 30 located outside the first sub-housing. The operator needs to apply force to the force-applying part to rotate the locking member 30. The locking member 30 and the mounting hole 11 are engaged by internal and external threads, allowing for quick movement towards or away from the traction wheel 20, facilitating operation and disassembly.

[0054] In some alternative embodiments, the traction wheel self-locking assembly further includes a spring 32, which is connected to the handle housing 10 and the locking member 30, respectively, and the spring 32 can move the locking member 30 away from the traction wheel 20.

[0055] In the above embodiment, the elastic force generated by the spring 32 can compensate for the gap between the locking member 30 and the internal thread 111 of the mounting hole 11, allowing the external thread 31 on the locking member 30 to fit tightly with the internal thread 111 on the inner wall of the mounting hole 11, and also increasing the resistance to rotation of the locking member 30 relative to the mounting hole 11. Therefore, this embodiment is beneficial for maintaining the state of the locking member 30. For example, when the locking member 30 is in the unlocked state, it is beneficial for keeping the locking member 30 in the unlocked state and preventing the locking member 30 from self-locking. When the locking member 30 is in the locked state, it is beneficial for keeping the locking member 30 in the locked position and preventing the locking member 30 from automatically unlocking.

[0056] According to some optional embodiments, the support member 40 includes a support body 41 and a reinforcing rib 42, at least one reinforcing rib 42 is provided on the outer wall of the support body 41, and the reinforcing rib 42 extends in a direction away from the outer wall of the support body 41.

[0057] In the above scheme, the supporting body 41 and the reinforcing rib 42 are fixedly connected, such as by adhesive bonding or integral molding. The reinforcing rib 42 can be set to one, two, three, etc., on the outer wall of the supporting body 41. The supporting body 41 is plate-shaped, and at least one reinforcing rib 42 is set perpendicular to the outer wall of the supporting body 41, which can improve the strength of the supporting body 41 and ensure the supporting effect.

[0058] According to some optional embodiments, a guide surface 411 is provided on one end of the support body 41 adjacent to the first side surface 21 of the traction wheel 20 along the axial direction, and the guide surface 411 is an arc-shaped surface. Providing the guide surface 411 on the end face of the support body 41 adjacent to the first side surface 21 can, on the one hand, prevent the traction wheel 20 from scratching the first side surface 21 during rotation, and reduce the friction between the support body 41 and the traction wheel 20; on the other hand, when the support body 41 abuts against the first side surface 21 to provide support, the guide surface 411 can fit more closely to the first side surface 21, providing better support for the traction wheel 20.

[0059] According to some optional embodiments, the end face of the reinforcing rib 42 adjacent to the first side 21 of the traction wheel 20 axial direction is set as an inclined surface 421, and the inclined surface 421 is inclined in a direction away from the supporting body 41. The inclined surface 421 provided on the reinforcing rib 42 can effectively prevent the reinforcing rib 42 from scratching the traction wheel 20 and reduce friction between the reinforcing rib 42 and the traction wheel 20.

[0060] According to some optional embodiments, the support member 40 can be any one of a cross shape, a T shape, or an L shape. For example, a cross shape for the support member 40 means that the cross-section of the support member 40 perpendicular to its extending direction is cross-shaped. Specifically, the extending direction of the support member 40 can be the axial direction of the traction wheel 20.

[0061] In the above embodiments, the cross section of the support member 40 in the direction perpendicular to the axis of the traction wheel 20 is any one of cross shape, T shape, or L shape, which can ensure that the support member 40 has sufficient strength to support the traction wheel.

[0062] A second aspect of this application provides an endoscope handle, including the aforementioned traction wheel self-locking assembly.

[0063] A third aspect of this application provides an endoscope including the endoscope handle as described above.

[0064] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0065] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A traction wheel self-locking assembly, used in an endoscope, characterized in that, include: The handle housing (10) and the traction wheel (20), locking member (30) and support member (40) disposed on the handle housing (10), wherein the traction wheel (20) is rotatably engaged with the handle housing (10); The support member (40) is disposed on the first side (21) of the traction wheel (20) in the axial direction; The locking member (30) is movably engaged with the handle housing (10), and the locking member (30) can move closer to or further away from the second side (22) of the traction wheel (20) axially relative to the handle housing (10); when the locking member (30) abuts against the second side (22) of the traction wheel (20) axially, the support member (40) is supported on the first side (21) of the traction wheel (20) axially.

2. The traction wheel self-locking assembly as described in claim 1, characterized in that, When the locking member (30) abuts against the second side (22) of the axial direction of the traction wheel (20), the locking member (30) abuts against the first position of the traction wheel (20), and the support member (40) supports the second position of the traction wheel (20); Wherein, the projection of the first position along the axial direction of the traction wheel (20) onto the first side (21) of the axial direction of the traction wheel (20) is located on the line connecting the second position and the center of the first side (21) of the traction wheel (20).

3. The traction wheel self-locking assembly as described in claim 1, characterized in that, The handle housing (10) is provided with a mounting hole (11), and the mounting hole (11) is provided with an internal thread (111). The locking member (30) is provided with an external thread (31). The locking member (30) engages with the external thread (31) through the internal thread (111) to make the locking member (30) move closer to or further away from the second side (22) of the traction wheel (20) in the axial direction.

4. The traction wheel self-locking assembly as described in claim 3, characterized in that, It also includes a spring (32), which is connected to the handle housing (10) and the locking member (30) respectively, and the spring (32) can move the locking member (30) away from the traction wheel (20).

5. The traction wheel self-locking assembly as described in claim 1, characterized in that, The support member (40) includes a support body (41) and a reinforcing rib (42). At least one reinforcing rib (42) is provided on the outer wall of the support body (41), and the reinforcing rib (42) extends in a direction away from the outer wall of the support body (41).

6. The traction wheel self-locking assembly as described in claim 5, characterized in that, The support body (41) has a guide surface (411) on one end of the first side (21) adjacent to the axial direction of the traction wheel (20), and the guide surface (411) is an arc-shaped surface.

7. The traction wheel self-locking assembly as described in claim 5, characterized in that, The end face of the reinforcing rib (42) adjacent to the first side (21) of the traction wheel (20) is set as an inclined surface (421), and the inclined surface (421) is inclined in a direction away from the support body (41).

8. The traction wheel self-locking assembly as described in claim 5, characterized in that, The support member (40) can be any one of the following: cross-shaped, T-shaped, or L-shaped.

9. An endoscope handle, characterized in that, Includes the traction wheel self-locking assembly as described in any one of claims 1-8.

10. An endoscope, characterized in that, Includes the endoscope handle as described in claim 9.

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