CN217792955U - Locking mechanism and endoscope device - Google Patents

Abstract

The utility model relates to a locking mechanism and endoscope device. Locking mechanism includes first connection, second connecting seat, lock sleeve subassembly and locating component, the spout that is equipped with of first connecting seat. The second connecting seat is in butt joint with the first connecting seat and is provided with a first limiting bulge. The lock sleeve assembly is sleeved outside the first connecting seat and the second connecting seat, the lock sleeve assembly is provided with a second limiting protrusion and an avoiding groove, the lock sleeve assembly is provided with a locking position and an unlocking position, the first limiting protrusion and the second limiting protrusion are clamped and connected when the lock sleeve assembly is in the locking position, and the second limiting protrusion and the first limiting protrusion are separated when the lock sleeve assembly is in the unlocking position. The one end of locating component runs through the internal surface of lock sleeve subassembly and stretches into the spout, and when the lock sleeve subassembly got into the locking position, locating component's one end slided to the one end of spout, and when the lock sleeve subassembly got into the unblock position, locating component's one end slided to the other end of spout. The locking mechanism is convenient to disassemble and assemble and simple to process.

Description

Locking mechanism and endoscope device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a locking mechanism and endoscope device.

Background

The medical endoscope is mainly applied to surgical operations and routine medical examinations, and when in clinical use, a doctor can extend the lens of the endoscope into the body by utilizing natural holes of the body or making tiny wounds on the body, and then can carry out closed operation in the body outside the body through other surgical instruments and a camera shooting and displaying system. Compared with the traditional surgical operation, the minimally invasive operation adopting the medical endoscope has small wound and quick recovery of a patient after the operation, so the medical endoscope is widely applied.

Medical endoscope generally includes the endoscope body and with this body coupling mirror sheath of endoscope, the endoscope body passes through the lock sleeve subassembly with the mirror sheath and can dismantle and be connected, lock sleeve subassembly and mirror sheath threaded connection, in order to restrict the turn range of lock sleeve subassembly, generally need process thread groove on the screw thread, but thread groove can destroy the screw thread integrality, burr appears in screw thread department easily, the technology complicacy of deburring has increased the part processing degree of difficulty, it is inconvenient also to lead to endoscope body and mirror sheath dismouting.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a locking mechanism and an endoscope apparatus, which are directed to the problems of the conventional endoscope that the detachment and installation of the endoscope body and the sheath are inconvenient, and the processing of the connection locking structure is difficult.

In one aspect, the present application provides a locking mechanism comprising:

the outer surface of the first connecting seat is provided with a sliding groove extending along the circumferential direction;

the second connecting seat is butted with the first connecting seat, and a first limiting bulge is arranged on the outer surface of the second connecting seat;

the lock sleeve assembly is sleeved outside the first connecting seat and the second connecting seat, one end, close to the second connecting seat, of the lock sleeve assembly is provided with a second limiting protrusion and an avoiding groove, and the lock sleeve assembly is provided with a locking position and an unlocking position; when the locking position is adopted, the first limiting bulge is clamped with the second limiting bulge; when the lock is in the unlocking position, the first limiting bulge is separated from the second limiting bulge and enters the avoidance groove; and the number of the first and second groups,

the positioning assembly is arranged on the peripheral side of the lock sleeve assembly, one end of the positioning assembly penetrates through the inner surface of the lock sleeve assembly and extends into the sliding groove, and when the lock sleeve assembly enters the locking position, one end of the positioning assembly slides to one end of the sliding groove and abuts against the sliding groove for limiting; when the lock sleeve assembly enters the unlocking position, one end of the positioning assembly slides to the other end of the sliding groove and is abutted and limited.

The technical scheme of the application is further explained as follows:

in one embodiment, a first positioning hole and a second positioning hole are arranged in the sliding chute at intervals, and when the lock sleeve assembly enters the locking position, one end of the positioning assembly extends into the first positioning hole; when the lock sleeve assembly enters the unlocking position, one end of the positioning assembly extends into the second positioning hole.

In one embodiment, the positioning assembly comprises:

the shifting rod is arranged on the peripheral side of the lock sleeve assembly, one end of the shifting rod penetrates through the inner surface of the lock sleeve assembly and extends into the sliding groove, and the shifting rod is provided with an accommodating cavity which penetrates through one end of the shifting rod and is communicated with the sliding groove;

a first elastic member disposed in the accommodation chamber; and the number of the first and second groups,

the ejector pin is movably arranged in the accommodating cavity and abutted against the first elastic piece, and when the lock sleeve assembly enters the locking position, the ejector pin enters the first positioning hole under the driving of the elastic force of the first elastic piece; when the lock sleeve assembly enters the unlocking position, the ejector pin enters the second positioning hole under the driving of the elastic force of the first elastic piece.

In one embodiment, the jacket assembly comprises:

the shaft sleeve is sleeved on the first connecting seat and provided with a first through hole communicated with the sliding groove;

the locking ring is butted with the shaft sleeve, and the second limiting bulge and the avoidance groove are both arranged on the locking ring; and the number of the first and second groups,

the outer sleeve is sleeved outside the shaft sleeve and the lock ring, the outer sleeve is provided with a second through hole communicated with the first through hole, and the positioning assembly is inserted in the first through hole and the second through hole.

In one embodiment, one of the sleeve and the lock ring is provided with a positioning protrusion protruding in an axial direction, and the other of the sleeve and the lock ring is provided with a positioning groove, and the positioning protrusion is inserted into the positioning groove.

In one embodiment, the lock ring is provided with a first boss protruding radially outward on the circumferential side, the outer sleeve is provided with a second boss protruding radially inward, and the lock sleeve assembly further includes a second elastic member provided between the lock ring and the outer sleeve, and one end of the second elastic member abuts against the first boss and the other end of the second elastic member abuts against the second boss.

In one embodiment, the sliding groove is obliquely arranged relative to the circumferential direction of the first connecting seat, the sliding groove has a first end farther away from the end of the first connecting seat and a second end closer to the end of the first connecting seat, and when the lock sleeve assembly enters the locking position, one end of the positioning assembly slides to the first end; when the lock sleeve assembly enters the unlocking position, one end of the positioning assembly slides to the second end.

In one embodiment, one of the first connecting seat and the second connecting seat is provided with a tapered groove extending along the axial direction, and the other one of the first connecting seat and the second connecting seat is provided with a tapered positioning portion inserted in the tapered groove.

In one embodiment, one of the first connecting seat and the second connecting seat is provided with an orientation protrusion protruding in an axial direction, and the outer surface of the other of the first connecting seat and the second connecting seat is provided with an orientation groove, and the orientation protrusion is inserted into the orientation groove.

On the other hand, this application still provides an endoscope device, including endoscope body, mirror sheath and foretell locking mechanism, the mirror sheath with first connecting seat is connected, the endoscope body with the second connecting seat is connected.

Above-mentioned endoscope device and locking mechanism pass through the lock sleeve subassembly and connect first connecting seat and second connecting seat to when the lock sleeve subassembly rotates to the locking position, make the first spacing arch of second connecting seat and the first spacing protruding looks joint of lock sleeve subassembly, thereby realize locking the second connecting seat on first connecting seat, when the lock sleeve subassembly rotates to the unlocking position, make the spacing arch of second and the separation of first spacing arch and enter into and dodge the inslot, can make second connecting seat and the separation of first connecting seat. And through seting up the spout at first connecting seat surface, make the locating component who wears to establish on the lock cover subassembly follow the lock cover subassembly and remove in the spout, when the lock cover subassembly gets into the locking position, locating component slides to the one end of spout and makes the lock cover subassembly can't continue to rotate, when the lock cover subassembly gets into the unblock position, locating component slides to another end of spout and makes the lock cover subassembly can't continue to rotate, consequently when the lock cover subassembly is rotatory to locking position or unblock position, locating component can accurately give the user feedback, make the user can accurately fix a position to locking position or unblock position, avoid the lock cover subassembly that the rotatory position of lock cover subassembly is crossed or the position can't accurately to second connecting seat locking or unblock problem that leads to. And can also carry out the axial spacing to the lock sleeve subassembly through stretching into the spout with locating component, saved the helicitic texture between first connecting seat and the lock sleeve subassembly, and then simplified technology, reduced the part preparation degree of difficulty, also be more convenient for endoscope body and mirror sheath dismouting.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a cross-sectional view of one embodiment of a locking mechanism;

FIG. 2 is an exploded view of the locking mechanism of one embodiment;

fig. 3 is a schematic structural view of a lock case of the locking mechanism shown in fig. 2.

Description of reference numerals:

10. a first connecting seat; 11. a chute; 111. a first positioning hole; 112. a second positioning hole; 13. a tapered slot; 14. an orientation boss; 20. a second connecting seat; 21. a first limit protrusion; 22. a tapered locating portion; 23. a directional tank; 30. a lock sleeve assembly; 31. a shaft sleeve; 311. a first through hole; 312. positioning a groove; 32. a locking ring; 321. a second limit bulge; 322. an avoidance groove; 323. positioning the projection; 324. a first boss; 33. a second elastic member; 34. a jacket; 341. a second through hole; 342. a second boss; 40. a positioning assembly; 41. a deflector rod; 412. an accommodating chamber; 42. a first elastic member; 43. and (6) ejecting the pin.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

One aspect of the present application provides a locking mechanism for coupling an endoscope and a sheath. Understandably, in other embodiments, the locking mechanism may also be used to attach other detachable two components, such as an outer sheath and an inner sheath for attaching an endoscopic sheath. Referring to fig. 1 and 2, in particular, the locking mechanism of an embodiment includes a first connecting seat 10, a second connecting seat 20, a sleeve assembly 30 and a positioning assembly 40, wherein a sliding groove 11 extending along a circumferential direction is formed on an outer surface of the first connecting seat 10. The second connecting seat 20 is butted with the first connecting seat 10, and a first limiting bulge 21 is arranged on the outer surface of the second connecting seat 20. The lock sleeve assembly 30 is sleeved outside the first connecting seat 10 and the second connecting seat 20, one end of the lock sleeve assembly 30 close to the second connecting seat 20 is provided with a second limiting protrusion 321 and an avoiding groove 322 which are adjacent to each other, the lock sleeve assembly 30 is provided with a locking position and an unlocking position, and the lock sleeve assembly 30 can move between the locking position and the unlocking position by rotating the lock sleeve assembly 30. And when in the locking position, the first limiting protrusion 21 is engaged with the second limiting protrusion 321, so that the lock sleeve assembly 30 locks the second connecting seat 20 to the first connecting seat 10. In the unlocking position, the second limiting protrusion 321 is separated from the first limiting protrusion 21 and enters the avoiding groove 322, and at this time, the second connection seat 20 can be separated from the first connection seat 10.

Further, the positioning assembly 40 is disposed on the peripheral side of the lock sleeve assembly 30, one end of the positioning assembly 40 penetrates through the inner surface of the lock sleeve assembly 30 and extends into the sliding groove 11, when the lock sleeve assembly 30 enters the locking position, one end of the positioning assembly 40 slides to one end of the sliding groove 11 to be abutted against the end groove wall of the sliding groove 11 for limitation, when the lock sleeve assembly 30 enters the unlocking position, one end of the positioning assembly 40 slides to the other end of the sliding groove 11 to be abutted against the other end groove wall of the sliding groove 11 for limitation, thereby limiting the rotation range of the lock sleeve assembly 30, and enabling an operator to accurately position the locking position and the unlocking position of the lock sleeve assembly 30.

Specifically, the first coupling holder 10 is adapted to be coupled to an endoscope sheath, and the second coupling holder 20 is adapted to be coupled to an endoscope. Alternatively, in other embodiments, the first attachment base 10 may be used to attach to an outer sheath of a scope sheath and the second attachment base 20 to attach to an inner sheath of the scope sheath. Specifically, when connecting first connecting seat 10 and second connecting seat 20, first anticlockwise rotate lock sleeve assembly 30 and make lock sleeve assembly 30 rotate to the unblock position, locating component 40 slides to the one end of spout 11 and with the tip cell wall butt of spout 11 this moment, lock sleeve assembly 30 can't continue anticlockwise rotation this moment to the realization is fixed a position the unblock position of lock sleeve assembly 30. Then, the first limiting protrusion 21 of the second connection seat 20 is aligned with the avoiding groove 322 of the lock sleeve assembly 30 and the second connection seat 20 is butted on the first connection seat 10, and then the lock sleeve assembly 30 is rotated clockwise until the positioning assembly 40 slides to the other end of the sliding groove 11, at which time the lock sleeve assembly 30 cannot rotate clockwise continuously, indicating that the lock sleeve assembly 30 has entered the locking position. At this time, the first limiting protrusion 21 is engaged with the second limiting protrusion 321, so as to lock the second connecting seat 20 on the first connecting seat 10. When the unlocking is needed, the lock sleeve assembly 30 is rotated counterclockwise again until the lock sleeve assembly 30 cannot rotate continuously, and at the moment, the lock sleeve assembly 30 enters the unlocking position, so that the second limiting protrusion 321 is separated from the first limiting protrusion 21 and enters the avoiding groove 322, and the second connecting seat 20 can be separated from the first connecting seat 10.

The locking mechanism is connected with the first connecting seat 10 and the second connecting seat 20 through the lock sleeve assembly 30, and when the lock sleeve assembly 30 rotates to the locking position, the first limiting bulge 21 of the second connecting seat 20 is clamped with the first limiting bulge 21 of the lock sleeve assembly 30, so that the second connecting seat 20 is locked on the first connecting seat 10, when the lock sleeve assembly 30 rotates to the unlocking position, the second limiting bulge 321 is separated from the first limiting bulge 21 and enters the avoiding groove 322, and the second connecting seat 20 can be separated from the first connecting seat 10. And through setting up spout 11 at the first connecting seat 10 surface, make the locating component 40 that wears to establish on the lock sleeve subassembly 30 follow the lock sleeve subassembly 30 and move in spout 11, when the lock sleeve subassembly 30 got into the locking position, locating component 40 slided to one end of spout 11 makes the lock sleeve subassembly 30 can't continue to rotate, when the lock sleeve subassembly 30 got into the unblock position, locating component 40 slided to another end of spout 11 makes the lock sleeve subassembly 30 can't continue to rotate, consequently when the lock sleeve subassembly 30 rotated to locking position or unblock position, locating component 40 can accurately give the user feedback, make the user can accurately fix a position to locking position or unblock position, avoid the lock sleeve subassembly 30 that the rotation of lock sleeve subassembly 30 is excessive or the unable accurate locking or unblock problem to second connecting seat 20 that leads to. And can also carry out axial spacing to lock sleeve assembly 30 through stretching into locating component 40 in the spout 11, saved the helicitic texture between first connecting seat 10 and the lock sleeve assembly 30, and then simplified technology, reduced the part preparation degree of difficulty, also be more convenient for endoscope body and mirror sheath dismouting.

Referring to fig. 3, the sliding slot 11 is provided with a first positioning hole 111 and a second positioning hole 112 at intervals, and when the lock sleeve assembly 30 enters the locking position, one end of the positioning assembly 40 extends into the first positioning hole 111; when the lock sleeve assembly 30 enters the unlocking position, one end of the positioning assembly 40 extends into the second positioning hole 112, so that when the lock sleeve assembly 30 rotates to the locking position or the unlocking position, the positioning assembly 40 timely gives feedback to an operator through entering the first positioning hole 111 or the second positioning hole 112, and the operator can timely know whether the lock sleeve assembly 30 rotates in place. The problem that the lock sleeve assembly 30 cannot lock or unlock the second connecting seat 20 due to the fact that the lock sleeve assembly 30 is rotated too far or not in place is avoided. Preferably, the first positioning hole 111 and the second positioning hole 112 are circular holes, so that the positioning assembly 40 is withdrawn from the first positioning hole 111 or the second positioning hole 112 when the lock sleeve assembly 30 is rotated again.

With reference to fig. 3, the sliding groove 11 is disposed in an inclined manner relative to the circumferential direction of the first connecting seat 10, the sliding groove 11 has a first end far away from the end of the first connecting seat 10 and a second end close to the end of the first connecting seat 10, when the lock sleeve assembly 30 enters the locking position, one end of the positioning assembly 40 slides to the first end, so that the lock sleeve assembly 30 moves in the axial direction toward the first connecting seat 10 during the rotation process to press the second connecting seat 20, and when the lock sleeve assembly 30 enters the unlocking position, one end of the positioning assembly 40 slides to the second end. Thereby causing the sleeve assembly 30 to move axially away from the first connector housing 10 during rotation to release the second connector housing 20. Further, the first positioning hole 111 is near the first end of the slide slot 11, and the second positioning hole 112 is near the second end of the slide slot 11.

With continued reference to fig. 1 and fig. 2, the locking sleeve assembly 30 includes a shaft sleeve 31, a locking ring 32 and an outer sleeve 34, wherein the shaft sleeve 31 is sleeved on the first connecting seat 10, and the shaft sleeve 31 is provided with a first through hole 311 communicating with the sliding slot 11; the lock ring 32 is butted with the shaft sleeve 31, and the second limit projection 321 and the avoidance groove 322 are both arranged on the lock ring 32. The outer sleeve 34 is sleeved outside the shaft sleeve 31 and the locking ring 32, the outer sleeve 34 is provided with a second through hole 341 communicated with the first through hole 311, the positioning component 40 is inserted in the first through hole 311 and the second through hole 341, and one end of the positioning component 40 extends out of the first through hole 311 to reach the sliding groove 11, so that the shaft sleeve 31, the locking ring 32 and the outer sleeve 34 can be driven to synchronously rotate by clockwise or anticlockwise shifting the positioning component 40, and the locking ring 32 can be changed between a locking position and an unlocking position.

Further, the end of the shaft sleeve 31 is provided with a positioning protrusion 323, the end of the lock ring 32 is provided with a positioning groove 312 protruding in the axial direction, and the positioning protrusion 323 is inserted in the positioning groove 23, thereby ensuring that the lock ring 32 and the shaft sleeve 31 can be rotated synchronously while allowing the lock ring 32 to be moved axially relative to the shaft sleeve 31. Understandably, in another embodiment, the positioning protrusion 323 may be provided at the end of the lock ring 32, and the positioning groove 312 may be provided at the end of the shaft sleeve 31, so that the lock ring 32 and the shaft sleeve 31 can be rotated synchronously by inserting the positioning protrusion 323 into the positioning groove 23.

Further, the circumferential side of the lock ring 32 is provided with a first boss 324 protruding outward in the radial direction, the outer sleeve 34 is provided with a second boss 342 protruding inward in the radial direction, the lock sleeve assembly 30 further comprises a second elastic member 33, the second elastic member 33 is disposed between the lock ring 32 and the outer sleeve 34, one end of the second elastic member 33 abuts against the first boss 324, and the other end of the second elastic member 33 abuts against the second boss 342, so that an axial pressing force can be applied to the lock ring 32 by the elastic force of the second elastic member 33, thereby when in a locking position, the lock ring 32 presses the second connecting seat 20, the connection stability of the first connecting seat 10 and the second connecting seat 20 is improved, and the elastic deformation of the second elastic member 33 can offset the assembling error of the shaft sleeve 31, the lock ring 32 and the outer sleeve 34, so that the rotation of the lock sleeve assembly 30 and the first connecting seat 10 is smoother, and the locking is avoided. Preferably, the second elastic member 33 may be a profiled spring.

With continued reference to fig. 1 and 2, the positioning assembly 40 includes a shift lever 41, a first elastic member 42, and a knock pin 43. The shifting lever 41 is inserted into the first through hole 311 and the second through hole 341, and one end of the positioning assembly 40 extends out of the first through hole 311 to reach the sliding slot 11, so that the shifting lever 41 can be shifted to drive the lock sleeve assembly 30 to rotate, and the operation is more convenient and labor-saving. Further, one end of the shift lever 41 penetrates through the inner surface of the jacket assembly 30 and extends into the sliding groove 11, and the shift lever 41 is provided with a receiving cavity 412 penetrating through one end of the shift lever 41 to communicate with the sliding groove 11. The first elastic member 42 is disposed in the receiving chamber 412. The knock pin 43 is movably disposed in the receiving cavity 412 and abuts against the first elastic member 42, and when the lock sleeve assembly 30 enters the locking position, the knock pin 43 of the positioning assembly 40 enters the first positioning hole 111 under the driving of the elastic force of the first elastic member 42; when the lock sleeve assembly 30 enters the unlocking position, the knock pin 43 of the positioning assembly 40 enters the second positioning hole 112 under the driving of the elastic force of the first elastic member 42, specifically, the knock pin 43 can make a crisp sound when bouncing into the first positioning hole 111 or the second positioning hole 112, so that when the lock sleeve assembly 30 enters the locking position or the unlocking position, the knock pin 43 can give a sound feedback, so that an operator knows that the lock sleeve assembly 30 has rotated in place. Preferably, the end of the knock pin 43 is a smooth spherical surface so that the knock pin 43 can be easily withdrawn from the first positioning hole 111 or the second positioning hole 112.

Referring to fig. 1 and 2, in the present embodiment, the end portion of the first connecting seat 10 is provided with a tapered groove 13 extending along the axial direction, the second connecting seat 20 is provided with a tapered positioning portion 22, and the tapered positioning portion 22 is inserted in the tapered groove 13, so as to ensure the connection stability of the first connecting seat 10 and the second connecting seat 20. And through the cooperation of conical tapered groove 13 and conical location portion 22, improved the axiality of first connecting seat 10 with second connecting seat 20, guarantee the coincidence of the central axis of first connecting seat 10 central axis and second connecting seat 20, further improve the stability of being connected of first connecting seat 10 and second connecting seat 20. It should be noted that, in another embodiment, the tapered groove 13 may also be disposed on the second connecting seat 20, and the connecting portion may also be disposed on the first connecting seat 10, which is not described herein.

With reference to fig. 2, the first connecting seat 10 has a protruding directional protrusion 14 along the axial direction, the outer surface of the second connecting seat 20 is provided with a directional groove 23, and the directional protrusion 14 is inserted into the directional groove 23, so as to position the circumferential position of the second connecting seat 20 relative to the first connecting seat 10, ensure the circumferential position of the first limiting protrusion 21, further ensure that when the lock sleeve assembly 30 is in the locking position, the first limiting protrusion 21 is aligned with the second limiting protrusion 321, and when the lock sleeve assembly 30 is in the unlocking position, the first limiting protrusion 21 is aligned with the avoiding groove 322. It is understood that, in another embodiment, the orientation protrusion 14 may also be disposed on the second connection seat 20, and the tapered groove 13 may also be disposed on the first connection seat 10, so as to also position the circumferential position of the first limit protrusion 21, which is not described herein.

In another aspect, the present application further provides an endoscope apparatus, and in particular, the endoscope apparatus of an embodiment comprises an endoscope body, a sheath and the locking mechanism of any of the above embodiments, the sheath is connected to the first connecting seat 10, and preferably, the sheath can be welded to the first connecting seat 10 or integrally formed with the first connecting seat. The endoscope body is connected with the second connecting seat 20, and preferably, the sheath can be welded with the first connecting seat 10 or integrally formed.

In a further aspect of the present application, an endoscope sheath is provided, and in particular, an endoscope sheath of an embodiment includes an outer sheath, an inner sheath, and the locking mechanism of any of the above embodiments, the outer sheath is connected to the first connecting seat 10, the inner sheath is connected to the second connecting seat 20, and preferably, the outer sheath can be welded to the first connecting seat 10 or integrally formed.

The endoscope device is connected with the endoscope body and the endoscope sheath through the locking mechanism, or the endoscope sheath is connected with the outer sheath and the inner sheath through the locking mechanism, the locking mechanism is connected with the first connecting seat 10 and the second connecting seat 20 through the lock sleeve assembly 30, and when the lock sleeve assembly 30 rotates to the locking position, the first limiting bulge 21 of the second connecting seat 20 is connected with the first limiting bulge 21 of the lock sleeve assembly 30 in a clamping mode, so that the second connecting seat 20 is locked on the first connecting seat 10, when the lock sleeve assembly 30 rotates to the unlocking position, the second limiting bulge 321 is separated from the first limiting bulge 21 and enters the avoidance groove 322, and the second connecting seat 20 can be separated from the first connecting seat 10. And through seting up spout 11 in first connecting seat 10 surface, make the locating component 40 that wears to establish on the lock cover subassembly 30 follow the lock cover subassembly 30 and move in spout 11, when the lock cover subassembly 30 got into the locking position, locating component 40 slided to the one end of spout 11 and makes the lock cover subassembly 30 can't continue to rotate, when the lock cover subassembly 30 got into the unblock position, locating component 40 slided to the other end of spout 11 and makes the lock cover subassembly 30 can't continue to rotate, consequently when the lock cover subassembly 30 rotated to locking position or unblock position, locating component 40 can accurately give the user feedback, make the user can accurately fix a position to locking position or unblock position, avoid the lock cover subassembly 30 that the rotation is crossed the position or is not reached and is caused can't accurately lock or unblock the problem to second connecting seat 20. And can also carry out axial spacing to lock sleeve subassembly 30 in stretching into spout 11 through with locating component 40, saved the helicitic texture between first connecting seat 10 and the lock sleeve subassembly 30, and then simplified technology, reduced the part preparation degree of difficulty, also be more convenient for endoscope body and mirror sheath dismouting.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A locking mechanism, comprising:

the outer surface of the first connecting seat is provided with a sliding groove extending along the circumferential direction;

the second connecting seat is butted with the first connecting seat, and a first limiting bulge is arranged on the outer surface of the second connecting seat;

the lock sleeve assembly is sleeved outside the first connecting seat and the second connecting seat, one end, close to the second connecting seat, of the lock sleeve assembly is provided with a second limiting protrusion and an avoiding groove, and the lock sleeve assembly is provided with a locking position and an unlocking position; when the locking position is adopted, the first limiting bulge is clamped with the second limiting bulge; when the lock is in the unlocking position, the first limiting bulge is separated from the second limiting bulge and enters the avoidance groove; and the number of the first and second groups,

the positioning assembly is arranged on the peripheral side of the lock sleeve assembly, and one end of the positioning assembly penetrates through the inner surface of the lock sleeve assembly and extends into the sliding groove; when the lock sleeve assembly enters the locking position, one end of the positioning assembly slides to one end of the sliding groove and abuts against and limits the position; when the lock sleeve assembly enters the unlocking position, one end of the positioning assembly slides to the other end of the sliding groove and is abutted and limited.

2. The locking mechanism of claim 1 wherein the slot defines a first alignment aperture and a second alignment aperture spaced apart from the first alignment aperture; when the lock sleeve assembly enters the locking position, one end of the positioning assembly extends into the first positioning hole; when the lock sleeve assembly enters the unlocking position, one end of the positioning assembly extends into the second positioning hole.

3. The locking mechanism of claim 2, wherein the positioning assembly comprises:

the shifting rod is arranged on the peripheral side of the lock sleeve assembly, one end of the shifting rod penetrates through the inner surface of the lock sleeve assembly and extends into the sliding chute, and the shifting rod is provided with an accommodating cavity which penetrates through one end of the shifting rod and is communicated with the sliding chute;

a first elastic member disposed in the accommodation chamber; and (c) a second step of,

the ejector pin is movably arranged in the accommodating cavity and is abutted against the first elastic piece; when the lock sleeve assembly enters the locking position, the ejector pin enters the first positioning hole under the driving of the elastic force of the first elastic piece; when the lock sleeve assembly enters the unlocking position, the ejector pin enters the second positioning hole under the driving of the elastic force of the first elastic piece.

4. The locking mechanism of claim 1, wherein the sleeve assembly comprises:

the shaft sleeve is sleeved on the first connecting seat and provided with a first through hole communicated with the sliding groove;

the locking ring is butted with the shaft sleeve, and the second limiting bulge and the avoidance groove are both arranged on the locking ring; and the number of the first and second groups,

the outer sleeve is sleeved outside the shaft sleeve and the lock ring, the outer sleeve is provided with a second through hole communicated with the first through hole, and the positioning assembly is inserted in the first through hole and the second through hole.

5. The locking mechanism according to claim 4, wherein one of said sleeve and said locking ring is provided with a positioning projection projecting in the axial direction, and the other of said sleeve and said locking ring is provided with a positioning groove in which said positioning projection is inserted.

6. The lock mechanism according to claim 4, wherein a first boss protruding radially outward is provided on a peripheral side of the lock ring, a second boss protruding radially inward is provided on the outer jacket, the lock jacket assembly further comprises a second elastic member provided between the lock ring and the outer jacket, and one end of the second elastic member abuts against the first boss and the other end of the second elastic member abuts against the second boss.

7. The locking mechanism according to claim 1, wherein the sliding groove is disposed obliquely with respect to a circumferential direction of the first connecting seat, and has a first end farther from an end of the first connecting seat and a second end closer to the end of the first connecting seat; when the lock sleeve assembly enters the locking position, one end of the positioning assembly slides to the first end; when the lock sleeve assembly enters the unlocking position, one end of the positioning assembly slides to the second end.

8. The locking mechanism according to claim 1, wherein one of the first connecting seat and the second connecting seat is provided with a tapered groove extending in the axial direction, and the other of the first connecting seat and the second connecting seat is provided with a tapered positioning portion inserted in the tapered groove.

9. The locking mechanism according to claim 1, wherein one of the first connecting seat and the second connecting seat is provided with an orientation protrusion protruding in an axial direction, and an outer surface of the other of the first connecting seat and the second connecting seat is provided with an orientation groove, and the orientation protrusion is inserted into the orientation groove.

10. An endoscopic device comprising an endoscope body, a sheath and a locking mechanism as defined in any one of claims 1 to 9, the sheath being connected to the first connecting base and the endoscope body being connected to the second connecting base.

Images