Threaded connection anti-loosening structure, connector and endoscope system

Abstract

The utility model relates to a threaded connection anti-loosening structure, a connector and an endoscope system.The threaded connection anti-loosening structure comprises a connecting column and a fixing sleeve, the outer surface of the connecting column is provided with a first thread and a limiting protrusion located on the rear side of the first thread in the screwing-in direction of the connecting column, and the fixing sleeve is provided with a through connecting hole; a second thread matched with the first thread is arranged on the inner circumference of the connecting hole, an abutting protrusion and a receding groove are arranged at the front end in the fixing sleeve in the screwing-in direction of the fixing sleeve, and the distance from the top end of the abutting protrusion to the center line of the connecting hole is larger than the distance from the top end of the second thread to the center line of the connecting hole. The end, deviating from the second thread, of the receding groove penetrates through the fixing sleeve, the fixing sleeve is provided with a locking position and a screwing-out position, under the locking position, the abutting protrusion is matched with the limiting protrusion in an abutting mode so that the fixing sleeve can be prevented from being screwed out of the connecting column, and under the screwing-out position, the limiting protrusion is arranged in the receding groove so that the fixing sleeve can be screwed out of the connecting column. The threaded connection anti-loosening structure can realize a threaded anti-loosening function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of endoscopes, in particular to a threaded connection anti-loose structure, a connector and an endoscope system. BACKGROUND

[0002] An endoscope system is a commonly used medical instrument, which comprises an endoscope, a main machine and a connector for connecting the endoscope and the main machine. Generally, the connector can comprise a first shell, a second shell and a fixing sleeve, and the connector can fix the first shell and the second shell through threaded connection of the fixing sleeve, the first shell and the second shell, so that the connector can reliably fix the cable of the endoscope inserted into the installation cavity.

[0003] However, since the threaded connection is prone to loosening under the action of vibration or other loads, how to prevent the threaded connection from loosening becomes the key to ensuring the connection reliability between the connector and the endoscope. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a threaded connection anti-loose structure, a connector and an endoscope system in view of the problem that the threaded connection is prone to loosening.

[0005] The technical scheme is as follows:

[0006] In a first aspect, the present application provides a threaded connection anti-loose structure, comprising:

[0007] a connecting column, an outer surface of the connecting column being provided with a first thread and a limiting protrusion, the limiting protrusion being located at a rear side of the first thread in a screwing direction of the connecting column;

[0008] a fixing sleeve, the fixing sleeve being provided with a connecting hole penetrating therethrough, an inner periphery of the connecting hole being provided with a second thread for cooperating with the first thread, a front end of the fixing sleeve in a screwing direction of the fixing sleeve being provided with an abutting protrusion and a giving recess at intervals, a distance from a top end of the abutting protrusion to a center line of the connecting hole being greater than a distance from a top end of the second thread to the center line of the connecting hole, one end of the giving recess away from the second thread penetrating through the fixing sleeve, the fixing sleeve having a locking position and a screwing-out position, in the locking position, the abutting protrusion and the limiting protrusion are in abutting cooperation to limit the fixing sleeve from being screwed out of the connecting column, in the screwing-out position, the limiting protrusion is arranged in the giving recess to enable the fixing sleeve to be screwed out of the connecting column.

[0009] In the thread connection anti-loose structure, the abutting protrusion is located at the front side of the second thread in the screwing direction of the fixing sleeve, and the distance from the top of the abutting protrusion to the center line of the connecting hole is greater than the distance from the top of the second thread to the center line of the connecting hole, so that the abutting protrusion does not affect the cooperation between the first thread and the second thread, and the fixing sleeve can be reliably sleeved on the outer periphery of the connecting column by thread connection. When the limiting protrusion is located at the rear side of the first thread in the screwing direction of the connecting column, and the fixing sleeve is sleeved on the connecting column, the limiting protrusion can abut against the abutting protrusion to limit the rotation of the fixing sleeve in the unscrewing direction, so that the abutting of the limiting protrusion and the abutting protrusion can effectively prevent the fixing sleeve from rotating in the unscrewing direction when the thread connection between the connecting column and the fixing sleeve fails or is loosened due to vibration or other loads, thereby achieving the thread anti-loose effect. Therefore, the thread connection anti-loose structure can achieve thread anti-loose by the cooperation between the limiting protrusion and the abutting protrusion, thereby effectively ensuring the connection reliability between the connecting column and the fixing sleeve. In addition, the fixing sleeve is also provided with a recess located at the front side of the second thread in the screwing direction of the fixing sleeve, and the limiting protrusion is arranged in the recess, so that the recess can provide a space for the limiting protrusion to exit the fixing sleeve in the unscrewing position, thereby achieving the disassembly of the fixing sleeve.

[0010] The technical solutions are further described as follows:

[0011] In one of the embodiments, a cooperation groove is arranged in the front end of the fixing sleeve in the screwing direction of the fixing sleeve and communicates with the connecting hole, and the abutting protrusion and the recess are arranged on the groove wall of the cooperation groove.

[0012] In one of the embodiments, the number of the limiting protrusions, the number of the abutting protrusions, and the number of the recesses are all multiple, the multiple abutting protrusions and the multiple recesses are arranged at intervals along the edge of the connecting hole, at least one recess is arranged between every two adjacent limiting protrusions, the limiting protrusion and the abutting protrusion are in one-to-one abutting cooperation in the locking position, and each limiting protrusion is arranged in one recess in the unscrewing position.

[0013] And / or, the height of at least part of the limiting protrusion gradually increases in the tightening direction of the fixing sleeve, and the height of the abutting protrusion gradually decreases in the tightening direction of the fixing sleeve.

[0014] In a second aspect, the application provides a connector, comprising a first shell, a second shell and the thread connection anti-loosening structure of any one of the above, the first shell and the second shell are clamped together and jointly enclose a mounting cavity, one end of the first shell is provided with a first connecting part, one end of the second shell is provided with a second connecting part, the first connecting part and the second connecting part are oppositely arranged and jointly enclose a connecting column, the connecting column is provided with a threading hole communicating with the mounting cavity, and the threading hole is used for threading a cable of an endoscope into the mounting cavity.

[0015] In the above connector, since the abutting protrusion is located in front of the second thread in the screwing direction of the fixing sleeve, and the distance from the top end of the abutting protrusion to the center line of the connecting hole is greater than the distance from the top end of the second thread to the center line of the connecting hole, the arrangement of the abutting protrusion does not affect the cooperation of the first thread and the second thread, which enables the fixing sleeve to be reliably sleeved on the outer periphery of the connecting column through thread connection. Since the limiting protrusion is arranged at the rear of the first thread in the screwing direction of the connecting column, and the limiting protrusion can abut against the abutting protrusion to limit the rotation of the fixing sleeve out of the connecting column when the fixing sleeve is sleeved on the connecting column, in the locked position, when the thread connection between the connecting column and the fixing sleeve fails or loosens due to vibration or other loads, the abutment of the limiting protrusion and the abutting protrusion can effectively prevent the fixing sleeve from rotating in the loosening direction, thereby playing a thread anti-loosening role. Therefore, the thread connection anti-loosening structure in the connector can effectively realize the thread anti-loosening function, thereby improving the connection reliability between the first shell and the second shell and ensuring the connection reliability between the connector and the endoscope. Since the fixing sleeve is also provided with the clearance groove located in front of the second thread in the screwing direction of the fixing sleeve, and the limiting protrusion can be arranged in the clearance groove, in the unscrewed position, the clearance groove can provide a clearance space for the limiting protrusion, so that when the fixing sleeve is unscrewed, the limiting protrusion can exit the fixing sleeve from the clearance groove, thereby completing the disassembly of the fixing sleeve and releasing the connection between the first shell and the second shell.

[0016] In one embodiment, one end of the first connecting part close to the first shell and one end of the second connecting part close to the second shell are both provided with the limiting protrusion, the fixing sleeve is provided with a plurality of abutting protrusions and a plurality of clearance grooves, in the locked position, the limiting protrusion and the abutting protrusion are in one-to-one abutting cooperation, and in the unscrewed position, each limiting protrusion is arranged in one clearance groove.

[0017] In one of the embodiments, the mounting cavity has an open end facing away from one end of the connecting column, a button hole is formed on the first shell and communicates with the mounting cavity, the connector further comprises an end cover, a button and a buckle, the end cover is sleeved on the outer periphery of the first shell and the second shell and covers the open end, the end cover is provided with a buckle hole communicating with the mounting cavity, the button is movably mounted in the mounting cavity, one end of the button can pass through the button hole to form a driving end, the buckle is rotatably mounted in the mounting cavity, one end of the buckle is connected with one end of the button facing away from the driving end, the other end of the buckle passes through the buckle hole to form a buckling end, and the buckling end is used for buckling and matching with a connecting socket; the buckle is provided with a rotating part rotatably connected with the side wall of the mounting cavity, and the buckle can be rotated around the rotating part under the driving of the button.

[0018] In one of the embodiments, the connector comprises an elastic arm, one end of the elastic arm is connected with one end of the button facing away from the driving end, and the other end is connected with the inner wall of the first shell.

[0019] In one of the embodiments, the connector comprises an elastic member and a support, the elastic member and the support are arranged in the mounting cavity, the button and the buckle are arranged on the same side of the support, one end of the elastic member is connected with one end of the buckle facing away from the buckling end, and the other end is connected with the support.

[0020] In one of the embodiments, a limiting groove is formed on the support and faces the buckle, one end of the elastic member facing away from the buckle penetrates into the limiting groove and abuts against the bottom wall of the limiting groove.

[0021] And / or, one side of the buckle facing the support is provided with a positioning column, and one end of the elastic member facing away from the support is sleeved on the positioning column.

[0022] In a third aspect, the application provides an endoscope system comprising the connector of any one of the above.

[0023] In the aforementioned endoscope system, since the abutment protrusion is located on the front side of the second thread in the screwing direction of the fixing sleeve, and the distance from the top of the abutment protrusion to the center line of the connecting hole is greater than the distance from the top of the second thread to the center line of the connecting hole, the setting of the abutment protrusion does not affect the fit between the first and second threads. This allows the fixing sleeve to be reliably fitted onto the outer periphery of the connecting post via a threaded connection. Furthermore, since the limiting protrusion is located on the rear side of the first thread in the screwing direction of the connecting post, and when the fixing sleeve is fitted onto the connecting post, the limiting protrusion can abut against the abutment protrusion to restrict the fixing sleeve from unscrewing from the connecting post. Therefore, in the locked position, when the threaded connection between the connecting post and the fixing sleeve fails or becomes loose due to vibration or other loads, the abutment between the limiting protrusion and the abutment protrusion can effectively prevent the fixing sleeve from rotating in its loosening direction, thus providing a thread-locking function. Therefore, the threaded connection anti-loosening structure in this endoscope system can effectively achieve the thread anti-loosening function, thereby improving the connection reliability between the first housing and the second housing, ensuring the connection reliability between the connector and the endoscope, and ensuring the reliability of the endoscope system. Furthermore, since the fixing sleeve also has a clearance groove located on the front side of the second thread in the screw-in direction of the fixing sleeve, and the limiting protrusion can be located in the clearance groove, in the unscrewed position, the clearance groove can provide clearance space for the limiting protrusion, so that when the fixing sleeve is unscrewed, the limiting protrusion can exit the fixing sleeve from the clearance groove, thereby completing the disassembly of the fixing sleeve and releasing the connection between the first housing and the second housing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the connector in one embodiment.

[0025] Figure 2 This is a partial structural diagram of the connector in one embodiment.

[0026] Figure 3 for Figure 2 A magnified schematic diagram of a portion of the structure at point A shown.

[0027] Figure 4 This is a schematic diagram of the structure of the fixing sleeve in one embodiment.

[0028] Figure 5 This is a partial cross-sectional view of the anti-loosening structure of the threaded connection in one embodiment.

[0029] Figure 6 This is a cross-sectional view of the connector in one embodiment.

[0030] Figure 7 This is an exploded view of the connector in one embodiment.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100, connector; 200, thread connection anti-loose structure; 1, fixing sleeve; 11, connecting hole; 111, second thread; 12, matching groove; 121, let go recess; 122, abutment protrusion; 2, connecting column; 2a, threading hole; 21, first thread; 22, limiting protrusion; 3a, mounting cavity; 3, first shell; 31, first connecting part; 32, keyhole; 4, key; 41, elastic arm; 42, limiting column; 5, end cover; 6, second shell; 61, second connecting part; 7, buckle; 71, clamping end; 72, positioning column; 73, rotating part; 8, bracket; 81, limiting groove; 9, elastic piece; S1: the screwing direction of the connecting column; S2: the screwing direction of the fixing sleeve; S3: the tightening direction of the fixing sleeve. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0036] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless specifically defined otherwise, if there is a description of the first feature "on" or "below" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is less than the second feature in horizontal height.

[0038] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0039] Reference Figures 1 to 5The embodiment of the application provides a threaded connection anti-loosening structure 200, which comprises a connecting column 2 and a fixing sleeve 1. The outer surface of the connecting column 2 is provided with a first thread 21 and a limiting protrusion 22. In the screwing direction S1 of the connecting column 2, the limiting protrusion 22 is located at the rear side of the first thread 21. The fixing sleeve 1 is provided with a through connecting hole 11. The inner periphery of the connecting hole 11 is provided with a second thread 111 for cooperating with the first thread 21. The front end of the fixing sleeve 1 is provided with a butt protrusion 122 and a give-way groove 121 at intervals in the screwing direction S2 of the fixing sleeve 1. The distance from the top end of the butt protrusion 122 to the center line of the connecting hole 11 is greater than the distance from the top end of the second thread 111 to the center line of the connecting hole 11. One end of the give-way groove 121 away from the second thread 111 penetrates through the fixing sleeve 1. The fixing sleeve 1 has a locking position and a screwing-out position. In the locking position, the butt protrusion 122 and the limiting protrusion 22 abut and cooperate to limit the fixing sleeve 1 from being screwed out of the connecting column 2. In the screwing-out position, the limiting protrusion 22 is arranged in the give-way groove 121, so that the fixing sleeve 1 can be screwed out of the connecting column 2.

[0040] In the thread connection anti-loosening structure 200 described above, since the abutting protrusion 122 is located at the front side of the second thread 111 in the screwing direction S2 of the fixing sleeve 1, and the distance from the top end of the abutting protrusion 122 to the center line of the connecting hole 11 is greater than the distance from the top end of the second thread 111 to the center line of the connecting hole 11, the arrangement of the abutting protrusion 122 does not affect the cooperation of the first thread 21 and the second thread 111, which enables the fixing sleeve 1 to be reliably sleeved on the outer periphery of the connecting column 2 by thread connection. Since the limiting protrusion 22 is arranged at the rear side of the first thread 21 in the screwing direction S1 of the connecting column 2, and the limiting protrusion 22 can abut against the abutting protrusion 122 to limit the unscrewing of the fixing sleeve 1 from the connecting column 2 when the fixing sleeve 1 is sleeved on the connecting column 2, in the locked position, when the thread connection between the connecting column 2 and the fixing sleeve 1 fails or loosens due to vibration or other loads, the abutment of the limiting protrusion 22 and the abutting protrusion 122 can effectively prevent the fixing sleeve 1 from rotating in the loosening direction thereof, thereby playing a thread anti-loosening role. Therefore, the thread connection anti-loosening structure 200 can realize thread anti-loosening through the cooperation between the limiting protrusion 22 and the abutting protrusion 122, thereby effectively ensuring the connection reliability between the connecting column 2 and the fixing sleeve 1. Since the fixing sleeve 1 is also provided with the accommodating groove 121 located at the front side of the second thread 111 in the screwing direction S2 of the fixing sleeve 1, and the limiting protrusion 22 can be arranged in the accommodating groove 121, in the unscrewing position, the accommodating groove 121 can provide a space for the limiting protrusion 22, so that when the fixing sleeve 1 is unscrewed, the limiting protrusion 22 can exit the fixing sleeve 1 from the accommodating groove 121, thereby completing the disassembly of the fixing sleeve 1. Since the fixing sleeve 1 forms the accommodating groove 121 by reducing the wall thickness of the fitting groove 12, the side wall of the accommodating groove 121 is more likely to deform under external force, which also enables the limiting protrusion 22 to quickly disengage from the fixing sleeve 1 by using the deformation of the side wall of the accommodating groove 121 when the fixing sleeve 1 is unscrewed, thereby quickly disassembling the fixing sleeve 1.

[0041] Specifically, as shown in Figure 4 the fixing sleeve 1 can be rotated from the locked position to the unscrewing position by rotating relative to the connecting column 2 in the tightening direction S3, so as to release the locking of the abutting protrusion 122 and the limiting protrusion 22, and realize the disassembly of the fixing sleeve 1.

[0042] In one embodiment, in combination Figure 4As shown, the front end of the fixing sleeve 1 along the screwing direction S2 of the fixing sleeve 1 is provided with a matching groove 12 communicated with the connecting hole 11, and the abutting protrusion 122 and the giving recess 121 are both arranged on the groove wall of the matching groove 12. In this way, when the fixing sleeve 1 is threadedly connected with the connecting column 2, the abutting protrusion 122 arranged on the fixing sleeve 1 will not interfere with the movement of the connecting column 2, so that the fixing sleeve 1 can be reliably rotated relative to the connecting column 2. Moreover, the abutting protrusion 122 can reliably abut against the limiting protrusion 22 to achieve the thread locking effect.

[0043] In one embodiment, the fixing sleeve 1 is threadedly connected with the connecting column 2. Figure 4 As shown, the number of the limiting protrusions 22, the number of the abutting protrusions 122 and the number of the giving recesses 121 are all multiple, the multiple abutting protrusions 122 and the multiple giving recesses 121 are arranged at intervals along the edge of the connecting hole 11, and at least one giving recess 121 is arranged between every adjacent two limiting protrusions 22. In the locked position, the limiting protrusions 22 and the abutting protrusions 122 abut and match one by one, and in the unscrewing position, each limiting protrusion 22 is arranged in a giving recess 121. In this way, it is beneficial to further prevent the thread connection between the connecting column 2 and the fixing sleeve 1 from loosening, thereby improving the connection reliability between the connecting column 2 and the fixing sleeve 1.

[0044] Optionally, the fixing sleeve 1 is threadedly connected with the connecting column 2. Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the height of at least part of the limiting protrusions 22 gradually increases in the tightening direction S3 of the fixing sleeve 1, and the height of the abutting protrusions 122 gradually decreases in the tightening direction S3 of the fixing sleeve 1. In this way, at least part of the surface of the limiting protrusion 22 away from the outer surface of the connecting column 2 can be an arc surface, and the surface of the abutting protrusion 122 towards the center line of the connecting hole 11 is an arc surface, which is beneficial to reduce the friction force generated when the abutting protrusion 122 abuts against the limiting protrusion 22 when the fixing sleeve 1 is tightened, so that the abutting protrusion 122 can more conveniently pass over the limiting protrusion 22 to reach the locked position of the fixing sleeve 1, thereby achieving the thread locking function. The height of the limiting protrusion 22 refers to the distance from the surface of the limiting protrusion 22 away from the outer surface of the connecting column 2 to the outer surface of the connecting column 2, and the height of the abutting protrusion 122 refers to the distance from the surface of the abutting protrusion 122 towards the center line of the connecting hole 11 to the inner wall surface of the corresponding fixing sleeve 1.

[0045] Referring to Figures 1 to 7An embodiment of the present application provides a connector 100, comprising a first shell 3, a second shell 6 and the thread connection anti-loosening structure 200 of any of the above embodiments, the first shell 3 and the second shell 6 are clamped and matched and jointly enclose a mounting cavity 3a, one end of the first shell 3 is provided with a first connecting part 31, one end of the second shell 6 is provided with a second connecting part 61, the first connecting part 31 and the second connecting part 61 are oppositely arranged and jointly enclose a connecting column 2, the connecting column 2 is provided with a threading hole 2a which is communicated with the mounting cavity 3a, and the threading hole 2a is used for threading a cable of an endoscope into the mounting cavity 3a.

[0046] In the connector 100 described above, since the abutting protrusion 122 is located at the front side of the second thread 111 in the screwing direction S2 of the fixing sleeve 1, and the distance from the top end of the abutting protrusion 122 to the center line of the connecting hole 11 is greater than the distance from the top end of the second thread 111 to the center line of the connecting hole 11, the arrangement of the abutting protrusion 122 does not affect the matching of the first thread 21 and the second thread 111, which enables the fixing sleeve 1 to be reliably sleeved on the outer periphery of the connecting column 2 in a thread connection manner. Since the limiting protrusion 22 is arranged at the rear side of the first thread 21 in the screwing direction S1 of the connecting column 2, and the limiting protrusion 22 can abut against the abutting protrusion 122 to limit the unscrewing of the fixing sleeve 1 from the connecting column 2 when the fixing sleeve 1 is sleeved on the connecting column 2, in the locked position, when the thread connection between the connecting column 2 and the fixing sleeve 1 is failed or loosened due to vibration or other loads, the abutment of the limiting protrusion 22 and the abutting protrusion 122 can effectively prevent the fixing sleeve 1 from rotating in the unscrewing direction thereof, thereby playing a thread anti-loosening role. Therefore, the thread connection anti-loosening structure 200 in the connector 100 can effectively realize the thread anti-loosening function, thereby improving the connection reliability between the first shell 3 and the second shell 6 and ensuring the connection reliability between the connector 100 and the endoscope. Since the fixing sleeve 1 is also provided with the accommodating groove 121 located at the front side of the second thread 111 in the screwing direction S2 of the fixing sleeve 1, and the limiting protrusion 22 can be arranged in the accommodating groove 121, in the unscrewed position, the accommodating groove 121 can provide a space for the limiting protrusion 22, so that when the fixing sleeve 1 is unscrewed, the limiting protrusion 22 can exit the fixing sleeve 1 from the accommodating groove 121, thereby completing the disassembly of the fixing sleeve 1 and releasing the connection between the first shell 3 and the second shell 6. Since the fixing sleeve 1 forms the accommodating groove 121 by reducing the wall thickness of the fitting groove 12, the side wall of the accommodating groove 121 is more likely to deform under external force, which also enables the limiting protrusion 22 to quickly disengage from the fixing sleeve 1 by utilizing the deformation of the side wall of the accommodating groove 121 when the fixing sleeve 1 is unscrewed, so as to quickly release the fixing of the fixing sleeve 1 to the first shell 3 and the second shell 6 and realize the quick disassembly of the connector 100.

[0047] For example, the connector 100 is used for connecting an endoscope and a camera head. Figure 2As shown, the outer surface of the first connecting portion 31 away from the second connecting portion 61 is provided with a first threaded portion, the outer surface of the second connecting portion 61 away from the first connecting portion 31 is provided with a second threaded portion, and the first threaded portion and the second threaded portion jointly form the first thread 21.

[0048] Optionally, the first shell 3 is provided with a first matching portion, the second shell 6 is provided with a second matching portion which is clamped with the first matching portion, and the first shell 3 is clamped with the second shell 6 through the first matching portion and the second matching portion. Illustratively, the first matching portion can include a clamping hook, and the second matching portion can include a hook groove which is matched and connected with the clamping hook.

[0049] In one embodiment, in combination with Figures 2 to 5 As shown, one end of the first connecting portion 31 close to the first shell 3 and one end of the second connecting portion 61 close to the second shell 6 are both provided with a limiting protrusion 22, the fixing sleeve 1 is provided with a plurality of abutting protrusions 122 and a plurality of giving recesses 121, and in the locked position, the limiting protrusions 22 are matched and abutted with the abutting protrusions 122 one by one, and in the unscrewed position, each limiting protrusion 22 is arranged in one giving recess 121. Among them, the plurality of abutting protrusions 122 and the plurality of giving recesses 121 are arranged at intervals along the edge of the connecting hole 11, and at least one giving recess 121 is arranged between each adjacent two limiting protrusions 22. In this way, through the matching of the limiting protrusions 22 and the abutting protrusions 122, the loosening between the fixing sleeve 1 and the first connecting portion 31 and the second connecting portion 61 can be effectively prevented, so that the fixing sleeve 1 can reliably fix the first shell 3 and the second shell 6, and the connection reliability between the connector 100 and the endoscope is improved.

[0050] In one embodiment, in combination with Figure 1 、 Figure 2 、 Figure 6 and Figure 7As shown, the mounting cavity 3a has an open end away from one end of the connecting column 2, the first shell 3 is provided with a button hole 32, the button hole 32 is communicated with the mounting cavity 3a, the connector 100 further comprises a cover 5, a button 4 and a buckle 7, the cover 5 is sleeved on the outer periphery of the first shell 3 and the second shell 6 and covers the open end, the cover 5 is provided with a buckle hole communicated with the mounting cavity 3a, the button 4 is movably mounted in the mounting cavity 3a, and one end of the button 4 can pass through the button hole 32 to form a driving end out of the mounting cavity 3a, the buckle 7 is rotatably mounted in the mounting cavity 3a, one end of the buckle 7 is connected with the end of the button 4 away from the driving end, the other end of the buckle 7 passes through the buckle hole to form a clamping end 71 out of the mounting cavity 3a, the clamping end 71 is used for clamping and matching with the connecting socket, the buckle 7 is provided with a rotating part 73 rotatably connected with the side wall of the mounting cavity 3a, and the buckle 7 can be rotated around the rotating part 73 under the driving of the button 4. In this way, the button 4 can reliably drive the buckle 7 to rotate, so that the buckle 7 can conveniently clamp the connecting socket or release the clamping with the connecting socket, thereby realizing the quick plugging and unplugging of the connector 100. In the connection of the connector 100 and the connecting socket, since the rotation of the buckle 7 needs to be driven by the button 4, the connector 100 can be reliably plugged into the connecting socket through the clamping between the buckle 7 and the connecting socket, avoiding the loosening or falling off of the connector 100, thereby ensuring the connection reliability between the endoscope and the host.

[0051] In one embodiment, as shown in Figure 6 and Figure 7 The connector 100 comprises an elastic arm 41, one end of the elastic arm 41 is connected with the end of the button 4 away from the driving end, and the other end is connected with the inner wall of the first shell 3. In this way, the end of the elastic arm 41 away from the button 4 is connected with the first shell 3 to form a fixed end, and the end of the elastic arm 41 connected with the button 4 is a free end, which makes the elastic arm 41 not only support the button 4, but also drive the button 4 to reset to the state before being pressed through its elastic performance, thereby effectively ensuring the reliability of the connector 100.

[0052] In one embodiment, as shown in Figure 6 and Figure 7 The connector 100 comprises an elastic member 9 and a bracket 8, the elastic member 9 and the bracket 8 are both arranged in the mounting cavity 3a, and the button 4 and the buckle 7 are both arranged on the same side of the bracket 8, one end of the elastic member 9 is connected with the end of the buckle 7 away from the clamping end 71, and the other end is connected with the bracket 8. In this way, when the button 4 drives the buckle 7 to rotate, the elastic member 9 can be elastically deformed under the action of the buckle 7, so that when the force applied to the button 4 is removed, the elastic member 9 can drive the buckle 7 to rotate in the opposite direction, thereby driving the buckle 7 and the button 4 to return to the state before being pressed, ensuring the reliability of the connector 100.

[0053] Optionally, asFigure 6 And Figure 7 As shown in

[0054] Optionally, as shown in Figure 6 The side of the buckle 7 facing the bracket 8 is provided with a positioning column 72, and the end of the elastic member 9 away from the bracket 8 is sleeved on the positioning column 72. In this way, the connection reliability of the elastic member 9 and the buckle 7 can be ensured, so that the elastic member 9 can reliably support the buckle 7, so that the buckle 7 can maintain the state when the key 4 is not pressed when there is no external force, effectively ensuring the reliability of the connector 100.

[0055] Optionally, in combination with Figure 7 The side of the elastic arm 41 facing the bracket 8 is provided with a limiting column 42, and the limiting column 42 is used to abut against the bracket 8 to limit the distance of the key 4 moving towards the side of the bracket 8. In this way, the abutment of the limiting column 42 and the bracket 8 can limit the movable stroke distance of the key 4 within the elastic limit of the elastic member 9, so as to avoid damage to the elastic member 9 due to overstroke movement of the key 4. Therefore, the design can effectively ensure the reliability of the connector 100.

[0056] In combination with Figures 1 to 7 An embodiment of the present application provides an endoscope system, which comprises the connector 100 of any of the above embodiments.

[0057] In the aforementioned endoscope system, since the abutment protrusion 122 is located in front of the second thread 111 in the screwing direction S2 of the fixing sleeve 1, and the distance from the top of the abutment protrusion 122 to the center line of the connecting hole 11 is greater than the distance from the top of the second thread 111 to the center line of the connecting hole 11, the setting of the abutment protrusion 122 will not affect the fit between the first thread 21 and the second thread 111. This allows the fixing sleeve 1 to be reliably fitted onto the outer periphery of the connecting post 2 by means of threaded connection. Since the limiting protrusion 22 is located on the rear side of the first thread 21 in the screwing direction S1 of the connecting post 2, and when the fixing sleeve 1 is fitted onto the connecting post 2, the limiting protrusion 22 can abut against the abutting protrusion 122 to restrict the fixing sleeve 1 from screwing out of the connecting post 2. Therefore, in the locked position, when the threaded connection between the connecting post 2 and the fixing sleeve 1 fails or becomes loose due to vibration or other loads, the abutment between the limiting protrusion 22 and the abutting protrusion 122 can effectively prevent the fixing sleeve 1 from rotating in its loosening direction, thus playing a role in preventing thread loosening. Therefore, the threaded connection anti-loosening structure 200 in this endoscope system can effectively achieve the thread anti-loosening function, thereby improving the connection reliability between the first housing 3 and the second housing 6, ensuring the connection reliability between the connector 100 and the endoscope, and ensuring the reliability of the endoscope system. Furthermore, since the fixed sleeve 1 is also provided with a clearance groove 121 located on the front side of the second thread 111 in the screw-in direction S2 of the fixed sleeve 1, and the limiting protrusion 22 can be provided in the clearance groove 121, in the screw-out position, the clearance groove 121 can provide clearance space for the limiting protrusion 22, so that when the fixed sleeve 1 is screwed out, the limiting protrusion 22 can exit the fixed sleeve 1 from the clearance groove 121, thereby completing the disassembly of the fixed sleeve 1 and disconnecting the connection between the first housing 3 and the second housing 6. Among them, since the fixed sleeve 1 forms the clearance groove 121 by thinning the wall thickness of the mating groove 12, the side wall of the clearance groove 121 is more likely to deform under the action of external force. This also allows the limiting protrusion 22 to quickly detach from the fixed sleeve 1 by utilizing the deformation of the side wall of the clearance groove 121 when the fixed sleeve 1 is screwed out, so as to quickly release the fixed sleeve 1 from the first housing 3 and the second housing 6, thereby facilitating the quick disconnection of the connector 100 and the endoscope and improving the disassembly efficiency of the endoscope system.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only express several implementation ways of the present application, and the description is specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A threadedly connected anti-loosening structure, characterized by comprising: The connecting column is provided with a first thread and a limiting protrusion on its outer surface, and the limiting protrusion is located at the rear side of the first thread in the screwing direction of the connecting column. The fixing sleeve is provided with a second thread for cooperating with the first thread on the inner periphery of the connecting hole, and the fixing sleeve is provided with abutting protrusions and accommodating grooves at intervals in the front end of the fixing sleeve in the screwing direction of the fixing sleeve. The distance from the top end of the abutting protrusion to the center line of the connecting hole is greater than the distance from the top end of the second thread to the center line of the connecting hole. One end of the accommodating groove away from the second thread penetrates through the fixing sleeve. The fixing sleeve has a locking position and a screwing-out position. In the locking position, the abutting protrusion abuts and cooperates with the limiting protrusion to limit the screwing-out of the fixing sleeve from the connecting column. In the screwing-out position, the limiting protrusion is arranged in the accommodating groove to enable the screwing-out of the fixing sleeve from the connecting column. The front end of the fixing sleeve in the screwing direction of the fixing sleeve is provided with a cooperating groove in communication with the connecting hole, and the abutting protrusion and the accommodating groove are arranged on the groove wall of the cooperating groove.

2. The thread connection anti-loosening structure according to claim 1, characterized in that, The number of limiting protrusions, the number of abutting protrusions and the number of accommodating grooves are all multiple. Multiple abutting protrusions and multiple accommodating grooves are arranged at intervals along the edge of the connecting hole. At least one accommodating groove is arranged between every two adjacent limiting protrusions. In the locking position, the limiting protrusion abuts and cooperates with the abutting protrusion one by one. In the screwing-out position, each limiting protrusion is arranged in one accommodating groove.

3. The thread connection anti-loosening structure according to claim 1 or 2, characterized by And / or, the height of at least part of the limiting protrusion gradually increases in the tightening direction of the fixing sleeve, and the height of the abutting protrusion gradually decreases in the tightening direction of the fixing sleeve. The threaded connection anti-loosening structure comprises a first shell, a second shell and the threaded connection anti-loosening structure of any one of claims 1 to 3. The first shell and the second shell are clamped and cooperatively form an installation cavity. One end of the first shell is provided with a first connecting part, and one end of the second shell is provided with a second connecting part. The first connecting part and the second connecting part are oppositely arranged and cooperatively form the connecting column. The connecting column is provided with a wire hole in communication with the installation cavity, and the wire hole is used for the wire of an endoscope to penetrate into the installation cavity.

4. A connector characterized by comprising: The first connecting part is provided with the limiting protrusion at one end close to the first shell, and the second connecting part is provided with the limiting protrusion at one end close to the second shell. The fixing sleeve is provided with multiple abutting protrusions and multiple accommodating grooves. In the locking position, the limiting protrusion abuts and cooperates with the abutting protrusion one by one. In the screwing-out position, each limiting protrusion is arranged in one accommodating groove.

5. The connector of claim 4, wherein, ​ 6. The connector of claim 4, wherein, The mounting cavity has an open end away from one end of the connecting column, a key hole is formed on the first shell and communicates with the mounting cavity, the connector further comprises an end cover, a key and a buckle, the end cover is sleeved on the outer periphery of the first shell and the second shell and covers the open end, the end cover is provided with a buckle hole communicating with the mounting cavity, the key is movably mounted in the mounting cavity, one end of the key can pass through the key hole to form a driving end, the buckle is rotatably mounted in the mounting cavity, one end of the buckle is connected with the end of the key away from the driving end, the other end of the buckle passes through the buckle hole to form a clamping end, and the clamping end is used for clamping and matching with a connecting socket; the buckle is provided with a rotating part rotatably connected with the side wall of the mounting cavity, and the buckle can be rotated around the rotating part under the driving of the key.

7. The connector of claim 6, wherein, The connector comprises an elastic arm, one end of the elastic arm is connected with the end of the key away from the driving end, and the other end is connected with the inner wall of the first shell.

8. The connector of claim 6, wherein, The connector comprises an elastic member and a support, the elastic member and the support are arranged in the mounting cavity, the key and the buckle are arranged on the same side of the support, one end of the elastic member is connected with the end of the buckle away from the clamping end, and the other end is connected with the support.

9. The connector of claim 8, wherein, An limiting groove is formed on the support and faces the buckle, one end of the elastic member away from the buckle penetrates into the limiting groove and abuts against the bottom wall of the limiting groove. And / or, the buckle is provided with a positioning column on the side facing the support, and one end of the elastic member away from the support is sleeved on the positioning column.

10. An endoscope system characterized by comprising: The connector comprises the connector according to any one of claims 4 to 9.

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