Traction wheel self-locking assembly, endoscope handle and endoscope

Abstract

The utility model is suitable for 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 shell, a traction wheel, a locking piece and a supporting piece, the traction wheel, the locking piece and the supporting piece are arranged on the handle shell, and the traction wheel is in running fit with the handle shell; the supporting piece is arranged on the axial first side face of the traction wheel. The locking piece is movably matched with the handle shell, and the locking piece can be close to or away from the second side face in the axial direction of the traction wheel relative to the handle shell. Under the condition that the locking piece abuts against the second side face of the traction wheel in the axial direction, the supporting piece is supported on the first side face of the traction wheel in the axial direction. The supporting piece provides support for the traction wheel, and the situation that when the locking piece locks the traction wheel, the traction wheel is in abutting connection and deviates is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to a traction wheel self-locking assembly, an endoscope handle and an endoscope. Background Art

[0002] In the prior art, the traction rope is pre-tightened by rotating the traction wheel in the endoscope. After the traction rope is pre-tightened, the traction wheel is abutted by the self-locking member to achieve self-locking. In the process of the self-locking member abutting the traction wheel, the traction wheel is easily deformed, which further affects the tension of the traction rope wound on the traction wheel. 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 above technical problems existing in the prior art, mainly including the following contents:

[0004] The first aspect of the present application provides a traction wheel self-locking assembly, which is applied to an endoscope, comprising:

[0005] A handle housing and a traction wheel, a locking member and a supporting member arranged on the handle housing, wherein the traction wheel is rotatably matched with the handle housing;

[0006] The support member is arranged on a first axial side of the traction wheel;

[0007] The locking piece is movably matched with the handle housing, and the locking piece can approach or move away from the second axial side of the traction wheel relative to the handle housing; when the locking piece abuts against the second axial side of the traction wheel, the supporting piece is supported on the first axial side of the traction wheel.

[0008] To further better implement the present application, the following configuration is particularly adopted: when the locking member abuts against the second axial side surface of the traction wheel, the locking member is supported at the first position of the traction wheel, and the supporting member is supported at the second position of the traction wheel;

[0009] The projection of the first position along the axial direction of the traction wheel on the first axial side surface of the traction wheel is located on a line connecting the center of the second position and the first side surface of the traction wheel.

[0010] In order to better implement the present application, the following setting structure is particularly adopted: a mounting hole is provided on the handle shell, an internal thread is provided in the mounting hole, and the locking piece is provided with an external thread. The locking piece cooperates with the external thread through the internal thread to make the locking piece approach or move away from the second axial side of the traction wheel.

[0011] In order to better realize the present application, the following setting structure is particularly adopted: it also includes a spring, which is respectively connected to the handle housing and the locking member, and the spring can act on the locking member to move in a direction away from the traction wheel.

[0012] In order to better realize the present application, the following structure is particularly adopted: the support member includes a support body and a reinforcing rib, at least one reinforcing rib is arranged 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 better realize the present application, the following configuration structure is particularly adopted: a guide surface is provided on one end of the support body adjacent to the first axial side surface of the traction wheel, and the guide surface is an arc-shaped surface.

[0014] To further better implement the present application, the following configuration is particularly adopted: the end surface of the reinforcing rib adjacent to the first axial side surface of the traction wheel is configured as an inclined surface, and the inclined surface is inclined in a direction away from the support body.

[0015] In order to better realize the present application, the following setting structure is particularly adopted: the support member is any one of a cross shape, a T shape, and an L shape.

[0016] A second aspect of the present application provides an endoscope handle, comprising the traction wheel self-locking assembly as described above.

[0017] A third aspect of the present application provides an endoscope, comprising the endoscope handle as described above.

[0018] Compared with the prior art, this application has at least the following technical effects:

[0019] In the present application, a locking piece and a supporting piece are respectively provided on both sides of the traction wheel. When the traction wheel completes pre-tightening of the traction rope, the locking piece approaches the second side surface of the traction wheel and abuts against the second side surface of the traction wheel to lock the traction wheel. The supporting piece can abut against the first side surface of the traction wheel to provide support for the traction wheel, thereby preventing the traction wheel from being abutted and offset when the locking piece is locking the traction wheel, or the traction wheel from being deformed after the locking piece has locked the traction wheel multiple times, so that the tensioning degree of the traction wheel on the traction rope changes, or even the traction rope is detached from the traction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

[0022] Figure 2 This is a schematic diagram of the traction wheel self-locking assembly in the handle housing in this application. Figure 1 ;

[0023] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the traction wheel self-locking component in the handle housing in this application Figure 2 ;

[0025] Figure 5 yes Figure 4 The cross-section view in the BB direction;

[0026] Figure 6 yes Figure 5 Enlarged view of the middle F part;

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

[0028] Figure 8 yes Figure 7 Cross-sectional view in CC direction;

[0029] Fig. 9 yes Figure 8 The large picture of the middle D section;

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

[0031] Fig.11 yes Fig.10 Enlarged view of part E in the middle.

[0032] In the figure:

[0033] 10-handle housing; 11-mounting hole; 111-internal thread;

[0034] 20-traction wheel; 21-first side surface; 22-second side surface;

[0035] 30-locking piece; 31-external thread; 32-spring;

[0036] 40 - support member; 41 - support body; 411 - guide surface; 42 - reinforcing rib; 421 - inclined surface. DETAILED DESCRIPTION

[0037] The following description provides many different embodiments or examples for implementing different features of the present application. The components and arrangements described in the following specific examples are only used to simplify the present application and are only used as examples, not to limit the present application.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents the selected embodiments of the present application.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In the prior art, the traction rope is pre-tightened by rotating the traction wheel in the endoscope. After the traction rope is pre-tightened, the traction wheel is abutted by the self-locking member to achieve self-locking. In the process of the self-locking member abutting the traction wheel, the traction wheel is easily deformed, which further affects the tension of the traction rope wound on the traction wheel.

[0042] In view of this, the first aspect of the present application provides a traction wheel self-locking assembly, which is applied to an endoscope, such as Figure 1-Figure 11 As shown, including:

[0043] The handle housing 10 and the traction wheel 20, the locking member 30 and the supporting member 40 arranged on the handle housing 10, the traction wheel 20 is rotatably matched with the handle housing 10. Exemplarily, the handle housing 10 includes a first sub-housing and a second sub-housing, and the first sub-housing and the second sub-housing are butted, and the butting method can be snap connection, gluing, etc. The traction wheel 20 is installed in the first sub-housing and can rotate relative to the first sub-housing. The traction wheel 20 can also be installed in the second sub-housing, which is not limited here.

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

[0045] In the above embodiment, the traction wheel 20 has a first side surface 21 and a second side surface 22 in the axial direction, and one end of the support member 40 is arranged on the first side surface 21 of the traction wheel 20, and the support member 40 can be close to or away from the first side surface. Exemplarily, 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 mounted on the second sub-shell. The support member 40 can be fixedly connected to the inner wall of the second sub-shell by welding, bolt connection, clamping, etc. When the support member 40 is connected to the second sub-shell by bolt connection, etc., when the support member 40 has problems such as wear, the support member 40 can be removed and replaced in time. In some optional embodiments, the support member 40 can also be movably matched with the second sub-shell, so that the support member 40 can be close to or away from the first side surface 21 of the traction wheel 20 relative to the second sub-shell. Among them, the support member 40 can be movably matched with the second sub-shell by threading or clamping.

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

[0047] In the present application, by respectively providing a locking member 30 and a supporting member 40 on both sides of the traction wheel 20, when the traction wheel 20 completes pre-tightening of the traction rope, the locking member 30 and the supporting member 40 can be simultaneously or the locking member 30 can approach the corresponding surface of the traction wheel 20, and when the locking member 30 abuts against the second side surface 22 of the traction wheel 20 to lock the traction wheel 20, the supporting member 40 can abut against the first side surface 21 of the traction wheel 20 to provide support for the traction wheel 20, and also assist the locking member 30 in locking the traction wheel 20, thereby preventing the traction wheel 20 from being abutted and offset when the locking member 30 is locking the traction wheel 20, or the traction wheel 20 from being deformed after the locking member 30 has locked the traction wheel 20 for multiple times, so that the tensioning degree of the traction rope by the traction wheel 20 changes, and even the traction rope is separated from the traction wheel 20.

[0048] According to some optional embodiments, when the locking member 30 abuts against the axial second side surface 22 of the traction wheel 20, the locking member 30 abuts against the first position of the traction wheel 20, and the support member 40 is supported at the second position of the traction wheel 20;

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

[0050] In the above solution, the position where the locking member 30 abuts on the second side surface 22 of the traction wheel 20 is the first position, and the position where the support member 40 supports on the first side surface 21 of the traction wheel 20 is the second position. Exemplarily, the first position where the locking member 30 abuts on the second side surface 22 of the traction wheel 20 is at point P, and the second position where the support member 40 abuts on the first side surface 21 of the traction wheel 20 can be at point N, wherein point N is aligned with point P, and when the traction wheel 20 is locked, it can be well ensured that the traction wheel 20 will not be offset or deformed.

[0051] In some optional embodiments, the first position where the locking member 30 abuts against the second side surface 22 of the traction wheel 20 can be located between the center of the traction wheel 20 and the second position. It can be understood that the first position P is located between the line connecting the center O and the second position N. In this way, when the locking member 30 abuts against the traction wheel 20, the support member 40 can still provide sufficient supporting force to ensure the integrity of the traction wheel 20, and problems such as displacement and deformation will not occur.

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

[0053] In the above scheme, the structure of the locking member 30 is rod-shaped, and a screw or a bolt structure may be preferred. A through hole is provided on the first sub-shell of the handle shell 10, and the through hole is a mounting hole 11, and the mounting hole 11 is used to cooperate with the locking member 30. A force-applying part is provided on the part of the locking member 30 located outside the first sub-shell, and 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 cooperate with each other through internal and external threads, and can quickly achieve close to or away from the traction wheel 20, which is convenient for operation and disassembly.

[0054] In some optional 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 act on the locking member 30 to move in a direction away from the traction wheel 20 .

[0055] In the above embodiment, the elastic force generated by the spring 32 can be used to make up for the clearance between the locking member 30 and the internal thread 111 of the mounting hole 11, so that the external thread 31 on the locking member 30 and the internal thread 111 on the inner wall of the mounting hole 11 can fit tightly, and it is beneficial to increase the resistance of the locking member 30 to rotate relative to the mounting hole 11. Therefore, this embodiment is beneficial to maintaining the state of the locking member 30. Exemplarily, when the locking member 30 is in the unlocked state, it is beneficial to keep the locking member 30 in the unlocked state to prevent the locking member 30 from self-locking. When the locking member 30 is in the locked state, it is beneficial to keep the locking member 30 in the locked position to prevent 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 disposed 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 solution, the support body 41 and the reinforcing rib 42 are fixedly connected, such as by gluing or integral molding. The number of reinforcing ribs 42 on the outer wall of the support body 41 can be one, two, three, etc. The support body 41 is plate-shaped, and at least one reinforcing rib 42 is perpendicularly arranged to the outer wall of the support body 41, so that the strength of the support body 41 can be improved and the supporting effect can be ensured.

[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 in the axial direction of the traction wheel 20, and the guide surface 411 is an arc-shaped surface. The support body 41 is provided with the guide surface 411 on the end surface adjacent to the first side surface 21, which can, on the one hand, prevent the traction wheel 20 from scratching the first side surface 21 of the traction wheel 20 during the rotation process, 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 be more closely attached to the first side surface 21, so as to better support the traction wheel 20.

[0059] According to some optional embodiments, the end surface of the reinforcing rib 42 adjacent to the first side surface 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. The inclined surface 421 provided on the reinforcing rib 42 can well prevent the reinforcing rib 42 from scratching the traction wheel 20 and reduce the friction between the reinforcing rib 42 and the traction wheel 20.

[0060] According to some optional embodiments, the support member 40 is any one of a cross-shaped, T-shaped, and L-shaped. Exemplarily, the cross-shaped support member 40 means that the cross section of the support member 40 perpendicular to its extension direction is a cross-shaped. Specifically, the extension direction of the support member 40 can be the axial direction of the traction wheel 20.

[0061] In the above embodiment, the cross section of the support member 40 in the direction perpendicular to the axis of the traction wheel 20 is any one of a cross shape, a T shape, and an L shape, so that it can be ensured that the support member 40 has sufficient strength to support the traction wheel.

[0062] A second aspect of the present application provides an endoscope handle, comprising the traction wheel self-locking assembly as described above.

[0063] A third aspect of the present application provides an endoscope, comprising the endoscope handle as described above.

[0064] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

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

Claims

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

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

3. The traction wheel self-locking assembly according to claim 1, characterized in that: 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) cooperates with the external thread (31) via the internal thread (111) to move the locking member (30) closer to or farther away from the axial second side surface (22) of the traction wheel (20).

4. The traction wheel self-locking assembly according to claim 3, characterized in that: It also comprises a spring (32), wherein the spring (32) is connected to the handle housing (10) and the locking member (30) respectively, and the spring (32) can act on the locking member (30) to move in a direction away from the traction wheel (20).

5. The traction wheel self-locking assembly according to claim 1, characterized in that: The support member (40) comprises a support body (41) and a reinforcing rib (42), wherein 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 according to claim 5, characterized in that: A guide surface (411) is provided on one end of the support body (41) adjacent to the axial first side surface (21) of the traction wheel (20), and the guide surface (411) is an arc-shaped surface.

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

8. The traction wheel self-locking assembly according to claim 5, characterized in that: The support member (40) is any one of a cross shape, a T shape, and an L shape.

9. An endoscope handle, characterized in that: It comprises a traction wheel self-locking assembly as described in any one of claims 1-8.

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

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