A self-locking device suitable for endoscope

Abstract

The invention discloses a self-locking device suitable for an endoscope, comprising a connecting assembly, which comprises a driven gear and a lever, wherein the driven gear and the lever are matched with each other through a pin; and a matching assembly, which comprises a driving gear, wherein the driving gear and the driven gear are meshed with each other through the lever. The beneficial effects of the invention are as follows: self-locking is achieved through the meshing of the driven gear and the driving gear, so that the self-locking effect is obvious; through the design of the lever structure, the meshing and separation between the driven gear and the driving gear can be switched back and forth without the need for external forces of the components, which not only saves components but also increases the service life of the instrument.

Description

Technical Field

[0001] The invention relates to the technical field of medical treatment, and in particular to a self-locking device suitable for an endoscope. Background Art

[0002] Endoscopes are widely used as medical instruments. When using them, medical personnel control the position of the endoscope lens in the human body by turning the dial. When doing experiments or surgeries, they usually observe the internal structures of the human body while being careful not to let go of the endoscope control.

[0003] Therefore, there are several defects in the endoscopic devices currently on the market:

[0004] (1) The medical staff who need to operate the device have to keep pressing the dial with their hands, which is inconvenient to use because it cannot be self-locking;

[0005] (2) The self-locking parts (e.g., brake principle type) are easy to wear or break, resulting in a low utilization rate of the device. Utility Model Content

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the above problems and / or the problems existing in the prior art, the present invention is proposed.

[0008] Therefore, one of the objects of the present invention is to provide a self-locking device suitable for an endoscope.

[0009] To solve the above technical problems, the present invention provides the following technical solutions: a self-locking device suitable for an endoscope, comprising a connecting assembly, which includes a driven gear and a lever, and the driven gear and the lever are matched with each other through a pin; a matching assembly, which includes a driving gear, and the driving gear is meshed with the driven gear through the lever.

[0010] As a preferred solution of the self-locking device suitable for an endoscope described in the present invention, wherein: the lever is divided into a gear connecting block and a paddle, and the gear connecting block and the paddle are integrally formed; wherein the cross-section of the gear connecting block is semi-circular, and the internal angle between the gear connecting block and the paddle is 45° to 90°.

[0011] As a preferred solution of the self-locking device suitable for an endoscope described in the present invention, wherein: the driven gear includes a connecting protrusion, and a limiting hole is provided on the connecting protrusion; the gear connecting block is provided with a snap protrusion column, and the snap protrusion column is provided with a connecting hole, and the connecting hole and the limiting hole are matched through a pin; wherein the cross-section of the limiting hole is in the shape of a notch, and its aperture is the same as that of the connecting hole, and its length is greater than the aperture.

[0012] As a preferred solution of the self-locking device suitable for an endoscope described in the present invention, it further includes: a fixing assembly, which includes a central shaft and a positioning member, and the positioning member is fixed to the central shaft by bolts; wherein the driving gear and the driven gear are sequentially sleeved on the central shaft; wherein the paddle is connected to the positioning member by a pin shaft.

[0013] As a preferred solution of the self-locking device suitable for an endoscope described in the present invention, the mating component also includes a gear fixing part, which is fixed on the central axis and includes a central protruding block and a rubber ring, the rubber ring is sleeved on the outer contour of the central protruding block, and the active gear is sleeved on the outside of the rubber ring.

[0014] As a preferred solution of the self-locking device suitable for an endoscope of the present invention, the connecting assembly further comprises a toggle handle, one end of which is hinged to the toggle piece.

[0015] As a preferred solution of the self-locking device suitable for an endoscope described in the present invention, the connecting component also includes a spring sheet, which is in contact with the driven gear, and a first protrusion is provided on the spring sheet, and the first protrusion cooperates with the surface where the snap protrusion column on the gear connecting block contacts the spring sheet.

[0016] As a preferred solution of the self-locking device suitable for an endoscope of the present invention, the spring sheet further includes a second protrusion, and the second protrusion is in a straight line with the first protrusion.

[0017] As a preferred solution of the self-locking device suitable for an endoscope according to the present invention, the fixing assembly further comprises a handle limiter fixed on the other side of the central axis.

[0018] As a preferred solution of the self-locking device suitable for an endoscope described in the present invention, the fixing assembly further includes a connecting shaft, and the connecting shaft passes through the toggle handle and is connected to the handle limiter.

[0019] Beneficial effects of the present invention:

[0020] (1) Self-locking is achieved through the engagement of the driven gear and the driving gear, making the self-locking effect obvious;

[0021] (2) Through the design of the lever structure, the engagement and separation between the driven gear and the driving gear can be switched back and forth without the need for external force from the components, which not only saves components but also increases the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0023] Figure 1 A partial exploded schematic diagram of an angle of a self-locking device applicable to an endoscope provided by the present invention;

[0024] Figure 2 A partial exploded schematic diagram of another angle of a self-locking device applicable to an endoscope provided by the present invention;

[0025] Figure 3 A schematic diagram of the overall structure of the spring sheet of a self-locking device suitable for an endoscope provided by the present invention;

[0026] Figure 4 A structural schematic diagram of the positional relationship between the lever and the spring sheet in a non-self-locking state of a self-locking device applicable to an endoscope provided by the present invention;

[0027] Figure 5 A structural schematic diagram of the positional relationship between the lever and the spring sheet in a self-locking state of a self-locking device applicable to an endoscope provided by the present invention;

[0028] Figure 6 A schematic structural diagram of a self-locking device for an endoscope provided by the present invention in a non-self-locking state;

[0029] Figure 7 A schematic structural diagram of a self-locking device for an endoscope provided by the present invention in a self-locking state.

[0030] in:

[0031] Connecting assembly - 100; driven gear - 101; connecting protrusion - 101a; limiting hole - 101a-1; lever - 102; gear connecting block - 102a; buckle protrusion column - 102a-1; connecting hole - 102a-2; pressing protrusion - 102a-3; paddle - 102b; spring sheet - 103; first protrusion - 103a; second protrusion - 103b; toggle handle - 104;

[0032] Matching assembly - 200; driving gear - 201; bayonet protrusion - 201a; gear fixing piece - 202; center protrusion block - 202a; rubber ring - 202b; limiting column - 202c;

[0033] Fixed assembly - 300; center axis - 301; positioning piece - 302, handle limit piece - 304, connecting shaft - 305;

[0034] Pin – 401; Pin shaft – 402. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example 1

[0039] Reference Figure 1 to Figure 7 The present invention provides a self-locking device suitable for an endoscope. In a first embodiment of the present invention, the main body thereof includes a connecting component 100 and a matching component 200. The connecting component 100 and the matching component 200 interact with each other to achieve a self-locking state and a non-self-locking state.

[0040] Specifically, the connecting component 100 includes a driven gear 101 and a lever 102. The driven gear 101 and the lever 102 are matched with each other through a pin 401, so that when the lever 102 is moved, the driven gear 101 can achieve left and right movement relative to the matching component 200 (the "left and right" here is relative to the orientation in the figure. For clear expression, the positive direction of the x-axis in the figure is defined as "right", and the following description uses "left" or "right", which will not be repeated), thereby achieving a self-locking state formed by mutual engagement and a non-self-locking state formed by mutual disengagement.

[0041] The mating assembly 200 includes a driving gear 201 , and the driving gear 201 is meshed with the driven gear 101 through a shifting rod 102 .

[0042] It should be noted that the teeth of the driving gear 201 and the driven gear 101 are gears that can mesh with each other, and the teeth of the two are arranged on opposite surfaces, refer to the accompanying drawings.

[0043] Preferably, the driven gear 101 comprises a connecting protrusion 101 a , a limiting hole 101 a - 1 is provided on the connecting protrusion 101 a , and a cross section of the limiting hole 101 a - 1 is in the shape of a notch.

[0044] The shift lever 102 is divided into a gear connecting block 102a and a shift piece 102b. The gear connecting block 102a is provided with a snap-on protrusion column 102a-1. The recessed area between every two adjacent snap-on protrusion columns 102a-1 cooperates with the connecting protrusion 101a. The snap-on protrusion column 102a-1 cooperates with the connecting protrusion 101a (the connecting protrusion 101a is inserted into two adjacent snap-on protrusion columns 102a-1). The snap-on protrusion column 102a-1 is provided with a connecting hole 102a-2. The cross-section of the connecting hole 102a-2 is circular, and its position is connected to the limiting hole 101a-1.

[0045] Preferably, in order to ensure the stability of the connection, the number of snap-on protrusion columns 102a-1 is preferably 4, and the number of connecting protrusions 101a is 2, as shown in the figure, but the number is not limited to this, and other numbers are also within the scope of this application and are not illustrated one by one.

[0046] It should be noted that although the aperture of the limiting hole 101a-1 is the same as that of the connecting hole 102a-2, the length of the limiting hole 101a-1 is greater than the aperture. Therefore, when the pin 401 passes through the limiting hole 101a-1 and the connecting hole 102a-2 to connect the lever 102 and the driven gear 101, the connecting lever 102 moves up and down along the length direction of the limiting hole 101a-1 with the pin 401 (the "up and down" here is relative to the orientation in the figure. For clear expression, the positive direction of the y-axis in the figure is defined as "up", and the following description uses "up" or "down" and will not be repeated).

[0047] Example 2

[0048] Reference Figure 1 to Figure 7 The present invention provides a self-locking device suitable for an endoscope. In a second embodiment of the present invention, the embodiment is different from the first embodiment in that: in this embodiment, a fixing assembly 300 is also included, which includes a central shaft 301 and a positioning member 302, the driving gear 201 and the driven gear 101 are sequentially sleeved on the central shaft 301, the positioning member 302 is fixed to the central shaft 301 by bolts, and the paddle 102b is connected to the positioning member 302 by a pin 402.

[0049] Specifically, the connecting assembly 100 includes a driven gear 101 and a lever 102. The driven gear 101 includes a connecting protrusion 101a. The connecting protrusion 101a is provided with a limiting hole 101a-1, and the cross-section of the limiting hole 101a-1 is in the shape of a notch. The lever 102 is divided into a gear connecting block 102a and a paddle 102b. The gear connecting block 102a is provided with a buckle protrusion column 102a-1. The recessed area between every two adjacent buckle protrusion columns 102a-1 is matched with the connecting protrusion 101a. The buckle protrusion column 102a-1 is matched with the connecting protrusion 101a. The buckle protrusion column 102a-1 is provided with a connecting hole 102a-2. The cross-section of the connecting hole 102a-2 is circular, and its position is connected with the limiting hole 101a-1. The driven gear 101 and the lever 102 are matched through a pin 401.

[0050] Preferably, the gear connection block 102a and the paddle 102b are integrally formed, and the cross section of the gear connection block 102a is semi-circular, so as to ensure that when the gear connection block 102a moves up and down along the limiting hole 101a-1, no interference will occur. The internal angle between the gear connection block 102a and the paddle 102b is 45° to 90°, so that the gear connection block 102a can be moved by paddle 102b, and the effect of labor saving can be achieved.

[0051] The mating assembly 200 includes a driving gear 201 , and the driving gear 201 is meshed with the driven gear 101 through a shifting rod 102 .

[0052] The fixing assembly 300 includes a central shaft 301 and a positioning member 302 . The driving gear 201 and the driven gear 101 are sequentially sleeved on the central shaft 301 . The positioning member 302 is fixed to the central shaft 301 by bolts. The paddle 102 b is connected to the positioning member 302 by a pin 402 .

[0053] Preferably, the pin 402 is hinged to the positioning member 302 .

[0054] In order to prevent the driving gear 201 from shifting, in this embodiment, the matching assembly 200 further includes a gear fixing member 202, which is fixed on the central shaft 301 and includes a central protruding block 202a and a rubber ring 202b, wherein the rubber ring 202b is sleeved on the outer contour of the central protruding block 202a, and the driving gear 201 is sleeved on the outer side of the rubber ring 202b. The friction between the central protruding block 202a and the driving gear 201 is increased by the rubber ring 202b.

[0055] Preferably, a limiting column 202 c is provided on the gear fixing member 202 , and a bayonet protrusion 201 a is provided on the driving gear 201 . The bayonet protrusion 201 a cooperates with the limiting column 202 c to constrain the position of the driving gear 201 .

[0056] It should be noted that, in the present embodiment, the paddle 102b is fixed to the positioning member 302 via a pin 402. Therefore, when the unfixed end of the paddle 102b is subjected to force, the gear connecting block 102a will rotate around the pin 402, and the other end of the gear connecting block 102a will move in the limiting hole 101a-1 via the pin 401. Therefore, in the present embodiment, in order to adapt to the size and range of motion, the limiting hole 101a-1 is in an arc shape.

[0057] Working principle: Pull the unfixed end of the paddle 102b, and the gear connecting block 102a rotates around the pin 402. At the same time, the gear connecting block 102a slides along the limiting hole 101a-1 through the pin 401. When the pin 401 moves to the bottom (bottommost end) of the limiting hole 101a-1 in the figure, the driving gear 201 and the driven gear 101 are meshed with each other, and the device is self-locking. When the pin 401 moves to the top (topmost end) of the limiting hole 101a-1 in the figure, the driving gear 201 and the driven gear 101 are disengaged, and the device is disengaged from self-locking.

[0058] Example 3

[0059] Reference Figure 1 to Figure 7 The present invention provides a self-locking device suitable for an endoscope. In a third embodiment of the present invention, this embodiment is different from the second embodiment in that: in this embodiment, the connecting component 100 also includes a spring sheet 103, which is in contact with the driven gear 101, and a first protrusion 103a is provided on the spring sheet 103, and the first protrusion 103a cooperates with a clamping protrusion 102a-3 on the gear connecting block 102a.

[0060] For ease of understanding, the directions in the figure are used as an example for specific explanation. When the pressing protrusion 102a-3 is below the first protrusion 103a, the device is in a self-locking state; when the pressing protrusion 102a-3 is above the first protrusion 103a, the device is in a non-self-locking state. Through the cooperation between the pressing protrusion 102a-3 and the first protrusion 103a, the user can get a hand feeling when turning the gear connecting block 102a and know when the position is reached.

[0061] Preferably, the spring sheet 103 further includes a second protrusion 103b, and the second protrusion 103b is in a straight line with the first protrusion 103a. Here, the second protrusion 103b serves to enhance the elastic potential energy of the rib where the first protrusion 103a is located.

[0062] Example 4

[0063] Reference Figure 1 to Figure 7 The present invention provides a self-locking device suitable for an endoscope. In a fourth embodiment of the present invention, this embodiment is different from the third embodiment in that: the connecting component 100 also includes a toggle handle 104, and one end of the toggle handle 104 is hinged to the paddle 102b.

[0064] Specifically, the connecting assembly 100 includes a driven gear 101, a lever 102, a spring sheet 103 and a lever handle 104. The driven gear 101 includes a connecting protrusion 101a. The connecting protrusion 101a is provided with a limiting hole 101a-1, and the cross-section of the limiting hole 101a-1 is notched and arc-shaped. The lever 102 is divided into a gear connecting block 102a and a lever 102b. The gear connecting block 102a is provided with a buckle protrusion column 102a-1. The recessed area between every two adjacent buckle protrusion columns 102a-1 is matched with the connecting protrusion 101a. The buckle protrusion column 102a-1 is matched with the connecting protrusion 101a. The buckle protrusion column 102a-1 is provided with a connecting hole 102a-2. The cross-section of the connecting hole 102a-2 is circular, and its position is connected with the limiting hole 101a-1. The driven gear 101 and the shifting rod 102 are matched with each other through the pin 401 .

[0065] Preferably, the gear connection block 102a and the paddle 102b are integrally formed, and the cross section of the gear connection block 102a is semi-circular, so as to ensure that when the gear connection block 102a moves up and down along the limiting hole 101a-1, no interference will occur. The internal angle between the gear connection block 102a and the paddle 102b is 45° to 90°, so that the gear connection block 102a can be moved by paddle 102b, and the effect of labor saving can be achieved.

[0066] One end of the toggle handle 104 is hinged to the paddle 102b.

[0067] The spring sheet 103 is fitted with the driven gear 101 . A first protrusion 103 a is provided on the spring sheet 103 . The first protrusion 103 a matches with a pressing protrusion 102 a - 3 on the gear connecting block 102 a .

[0068] The mating assembly 200 includes a driving gear 201 and a gear fixing member 202. The driving gear 201 is meshed with the driven gear 101 through the lever 102. The gear fixing member 202 is fixed on the central shaft 301 and includes a central protruding block 202a and a rubber ring 202b. The rubber ring 202b is sleeved on the outer contour of the central protruding block 202a, and the driving gear 201 is sleeved on the outer side of the rubber ring 202b.

[0069] The fixing assembly 300 includes a central shaft 301 and a positioning member 302 . The driving gear 201 and the driven gear 101 are sequentially sleeved on the central shaft 301 . The positioning member 302 is fixed to the central shaft 301 by bolts. The paddle 102 b is connected to the positioning member 302 by a pin 402 .

[0070] Preferably, the pin 402 is hinged to the positioning member 302 .

[0071] Preferably, the fixing assembly 300 further includes a handle stopper 304 and a connecting shaft 305 . The handle stopper 304 is fixed on the other side of the central axis 301 , and the connecting shaft 305 passes through the toggle handle 104 and is connected to the handle stopper 304 .

[0072] Preferably, the gear fixing member 202 is provided with a limiting column 202 c , and the driving gear 201 is provided with a bayonet protrusion 201 a , and the bayonet protrusion 201 a cooperates with the limiting column 202 a to constrain the position of the driving gear 201 .

[0073] Working principle: Slide the toggle handle 104 to the far left side of the diagram. When the pin 401 moves to the bottom (bottommost end) of the limiting hole 101a-1 in the diagram, the driving gear 201 and the driven gear 101 engage with each other, and the device is self-locking. Slide the toggle handle 104 to the far right side of the diagram. When the pin 401 moves to the top (topmost end) of the limiting hole 101a-1 in the diagram, the driving gear 201 and the driven gear 101 disengage, and the device is self-locking. Through the design of the lever structure, the engagement and separation between the driven gear and the driving gear can be switched back and forth without the need for external forces from the components, which saves components and increases the service life of the device.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A self-locking device suitable for an endoscope, characterized in that: include, A connecting assembly (100) comprises a toggle handle (104), a driven gear (101) and a toggle lever (102), wherein the driven gear (101) and the toggle lever (102) are matched with each other via a pin (401); A mating assembly (200) comprising a driving gear (201), wherein the driving gear (201) is meshed with the driven gear (101) via the shifting rod (102); The lever (102) is divided into a gear connection block (102a) and a paddle (102b), and the gear connection block (102a) and the paddle (102b) are integrally formed; one end of the paddle handle (104) is hinged to the paddle (102b); Wherein, the cross section of the gear connecting block (102a) is semi-annular; The driven gear (101) comprises a connecting protrusion (101a), and a limiting hole (101a-1) is provided on the connecting protrusion (101a); The gear connection block (102a) is provided with a buckle protrusion column (102a-1), the buckle protrusion column (102a-1) is provided with a connection hole (102a-2), and the connection hole (102a-2) and the limiting hole (101a-1) are matched through a pin (401); The cross-section of the limiting hole (101a-1) is in the shape of a notch, the hole diameter of which is the same as that of the connecting hole (102a-2), and the length of which is greater than the hole diameter; The self-locking device also includes a fixing assembly (300), which includes a central shaft (301) and a positioning member (302), wherein the positioning member (302) is fixed to the central shaft (301) by means of bolts; Wherein, the driving gear (201) and the driven gear (101) are sequentially sleeved on the central shaft (301); Wherein, the paddle (102b) is connected to the positioning member (302) via a pin shaft (402); The mating assembly (200) further comprises a gear fixing member (202), the gear fixing member (202) being fixed on the central shaft (301), and comprising a central protruding block (202a) and a rubber ring (202b), the rubber ring (202b) being sleeved on the outer contour of the central protruding block (202a), and the driving gear (201) being sleeved on the outer side of the rubber ring (202b); The connecting assembly (100) further comprises a spring sheet (103) which fits the driven gear (101), a first protrusion (103a) being provided on the spring sheet (103), and the first protrusion (103a) matches with the surface of the snap-on protrusion column (102a-1) on the gear connecting block (102a) which contacts the spring sheet (103).

2. The self-locking device for endoscope according to claim 1, characterized in that: The spring sheet (103) further comprises a second protrusion (103b), wherein the second protrusion (103b) and the first protrusion (103a) are in a straight line.

3. The self-locking device for endoscope according to claim 1 or 2, characterized in that: The fixing assembly (300) further comprises a handle stopper (304) which is fixed on the other side of the central axis (301).

4. The self-locking device for endoscope according to claim 3, characterized in that: The fixing assembly (300) further comprises a connecting shaft (305), wherein the connecting shaft (305) passes through the toggle handle (104) and is connected to the handle stopper (304).

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