CN216951179U - Locking mechanism and endoscope sheath - Google Patents
Locking mechanism and endoscope sheath Download PDFInfo
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- CN216951179U CN216951179U CN202220402780.2U CN202220402780U CN216951179U CN 216951179 U CN216951179 U CN 216951179U CN 202220402780 U CN202220402780 U CN 202220402780U CN 216951179 U CN216951179 U CN 216951179U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The utility model relates to a locking mechanism and an endoscope sheath. The second connecting seat is in butt joint with the first connecting seat, and a first limiting bulge is arranged on the outer surface of the second connecting seat. The lock sleeve is sleeved outside the first connecting seat and the second connecting seat, one end, close to the second connecting seat, of the lock sleeve is provided with an adjacent second limiting protrusion and an avoiding groove, the lock sleeve is provided with a locking position and an unlocking position, and the first limiting protrusion and the second limiting protrusion are clamped in a clamping mode when the lock sleeve is in the locking position. When the unlocking position is realized, the first limiting protrusion is separated from the second limiting protrusion and enters the avoiding groove. The ball is rotationally arranged on the inner surface of the lock sleeve and is in rolling fit with the sliding groove, and when the lock sleeve enters the locking position, the ball rolls to one end of the sliding groove. When the lock sleeve enters the unlocking position, the ball rolls to the other end of the sliding groove. The locking mechanism is convenient to disassemble and assemble and simple to process.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a locking mechanism and an endoscope sheath.
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 in vitro 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 after the operation of a patient, so the medical endoscope is widely applied.
The endoscope sheath of the medical endoscope generally comprises an outer sheath and an inner sheath sleeved in the outer sheath, the outer sheath and the inner sheath are detachably connected through a locking sleeve, the locking sleeve is in threaded connection with the outer sheath, in order to limit the rotation range of the locking sleeve, a thread groove is usually required to be machined on a thread, but the thread groove can damage the integrity of the thread, burrs are easily generated at the thread, the process for removing the burrs is complex, the difficulty in machining parts is increased, and the outer sheath and the inner sheath are inconvenient to disassemble and assemble.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a locking mechanism and an endoscope sheath, which are capable of solving the problems of the conventional endoscope sheath that the outer sheath and the inner sheath are not easily assembled and disassembled, and the connection locking structure is difficult to process.
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 is sleeved outside the first connecting seat and the second connecting seat, one end of the lock sleeve, which is close to the second connecting seat, is provided with a second limiting protrusion and an avoiding groove, and the lock sleeve 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 unlocking position is realized, the first limiting bulge is separated from the second limiting bulge and enters the avoidance groove;
the ball is rotatably arranged on the inner surface of the lock sleeve and is in rolling fit with the sliding groove, and when the lock sleeve enters the locking position, the ball is driven to roll to one end of the sliding groove and is abutted to limit; when the lock sleeve enters the unlocking position, the ball is driven to roll to the other end of the sliding groove and is abutted and limited.
The technical solution of the present application is further described below:
in one embodiment, the inner surface of the lock sleeve is provided with a limiting groove, the limiting groove extends along the axial direction of the lock sleeve and penetrates through one end of the lock sleeve, the ball is rollably arranged in the limiting groove, and part of the ball protrudes out of the limiting groove.
In one embodiment, a positioning hole is formed in the bottom of the sliding groove, and an elastic piece is arranged in the positioning hole; at the beginning, the ball is pressed in the locating hole, when the lock sleeve is sleeved outside the first connecting seat and rotates to the limit groove and the locating hole are aligned, the ball enters the limit groove under the elastic action of the elastic piece, and at the moment, the top of the elastic piece is flush with the groove bottom of the sliding groove.
In one embodiment, the inner surface of the lock sleeve is provided with an internal thread, the outer surface of the first connecting seat is provided with an external thread matched with the internal thread, and the external thread is arranged at a distance from the sliding groove.
In one embodiment, one of the first connecting seat and the second connecting seat is provided with a positioning groove extending along the axial direction, and the other one of the first connecting seat and the second connecting seat is provided with a positioning portion inserted in the positioning groove.
In one embodiment, the positioning groove is a conical groove, and the positioning portion is a cone structure matched with the positioning groove in shape.
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.
In one embodiment, the locking mechanism further comprises a shift lever fixed to an outer surface of the lock sleeve.
In one embodiment, the deflector rod is welded with the outer surface of the lock sleeve; or the deflector rod is adhered to the outer surface of the lock sleeve; or the deflector rod and the lock sleeve are of an integrally formed structure.
On the other hand, the application also provides an endoscope sheath, which comprises an outer sheath, an inner sheath and the locking mechanism, wherein the outer sheath is connected with the first connecting seat, and the inner sheath is connected with the second connecting seat.
The locking mechanism and the endoscope sheath can be connected with the first connecting seat and the second connecting seat through the locking sleeve, wherein the first connecting seat can be used for connecting an outer sheath of the endoscope sheath, and the second connecting seat can be used for connecting an inner sheath of the endoscope sheath. When the lock sleeve rotates to the locking position, the first limiting bulge of the second connecting seat is clamped with the first limiting bulge of the lock sleeve, the second connecting seat is locked on the first connecting seat, namely, the outer sheath and the inner sheath are locked, when the lock sleeve rotates to the unlocking position, the first limiting bulge is separated from the second limiting bulge and enters the avoidance groove, the second connecting seat can be separated from the first connecting seat, and the outer sheath and the inner sheath are separated. The sliding groove is formed in the outer surface of the first connecting seat, the ball arranged on the inner surface of the lock sleeve rolls in the sliding groove, when the lock sleeve enters the locking position, the ball rolls to one end of the sliding groove, so that the lock sleeve cannot continue to rotate, when the lock sleeve enters the unlocking position, the ball rolls to the other end of the sliding groove, so that the lock sleeve cannot continue to rotate, when the lock sleeve rotates to the locking position or the unlocking position, the ball can accurately give feedback to a user, the user can accurately position the locking position or the unlocking position, and the problem that the lock sleeve cannot accurately lock or unlock the second connecting seat due to the fact that the lock sleeve rotates over or is not in place is avoided. And realize restricting the rotation range of lock sleeve through ball and spout cooperation, avoided destroying the helicitic texture on first connecting seat and the lock sleeve, guaranteed the screw thread integrality of first connecting seat and lock sleeve, reduced the processing degree of difficulty for the lock sleeve is more convenient to the locking of second connecting seat and unblock operation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
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 introduced 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 based on these drawings without creative efforts.
FIG. 1 is an exploded view of the latch mechanism of one embodiment;
FIG. 2 is a cross-sectional view of one embodiment of a locking mechanism;
fig. 3 is a schematic structural view of a lock case of the locking mechanism shown in fig. 1.
Description of the reference numerals:
10. a first connecting seat; 11. a chute; 111. positioning holes; 12. an external thread; 13. positioning a groove; 14. an orientation boss; 20. a second connecting seat; 21. a first limit protrusion; 22. a positioning part; 23. a directional tank; 30. a lock sleeve; 31. a second limit bulge; 32. an avoidance groove; 33. an internal thread; 34. a limiting groove; 40. a deflector rod; 51. an elastic member; 52. and a ball.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
One aspect of the present application provides a locking mechanism for connecting an outer sheath and an inner sheath of an endoscopic sheath. Understandably, in other embodiments, the locking mechanism may also be used to connect other detachable two components, such as for connecting an endoscope and a sheath. Referring to fig. 1, fig. 1 shows an exploded view of the locking mechanism in one embodiment of the present invention. Specifically, the locking mechanism of an embodiment includes a first connecting seat 10, a second connecting seat 20, a lock sleeve 30, and a ball 52, wherein an outer surface of the first connecting seat 10 is provided with a sliding groove 11 extending in a circumferential direction. 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 30 is sleeved outside the first connecting seat 10 and the second connecting seat 20, one end of the lock sleeve 30 close to the second connecting seat 20 is provided with a second limiting protrusion 31 and an avoiding groove 32 which are adjacent to each other, the lock sleeve 30 has a locking position and an unlocking position, and the lock sleeve 30 can move between the locking position and the unlocking position by rotating the lock sleeve 30. And when in the locking position, the first limiting protrusion 21 is engaged with the second limiting protrusion 31, so that the locking sleeve 30 locks the second connecting seat 20 to the first connecting seat 10. In the unlocking position, the first limiting protrusion 21 is separated from the second limiting protrusion 31 and enters the avoiding groove 32, and at this time, the second connecting seat 20 can be separated from the first connecting seat 10. Further, the ball 52 is rotatably disposed on the inner surface of the lock sleeve 30 and is in rolling fit with the sliding slot 11, and when the lock sleeve 30 enters the locking position, the ball 52 is driven to roll to one end of the sliding slot 11 and abut against the limit; when the lock sleeve 30 enters the unlocking position, the ball 52 is driven to roll to the other end of the sliding groove 11 and abut against the limiting position, so that the rotation range of the lock sleeve 30 is limited, and the lock sleeve 30 is prevented from being screwed or unscrewed.
Specifically, the first connecting holder 10 is used for connecting with an outer sheath of an endoscope sheath, and the second connecting holder 20 is used for connecting with an inner sheath of an endoscope sheath. Alternatively, in other embodiments, the first connecting block 10 may be used to connect with a sheath, and the second connecting block 20 may be used to connect with an endoscope. Preferably, the lock sleeve 30 is threadedly coupled with the first coupling seat 10. When the lock sleeve 30 is installed, one end of the lock sleeve 30 is sleeved on the first connecting seat 10, the lock sleeve 30 is rotated anticlockwise to enable the lock sleeve 30 to rotate to the unlocking position, the ball 52 rolls to one end of the sliding groove 11 at the moment, the ball 52 is abutted by the end part of the sliding groove 11 and limited, and cannot continue to roll, and the lock sleeve 30 cannot continue to rotate anticlockwise, so that the unlocking position of the lock sleeve 30 is positioned. Then, the first limiting protrusion 21 of the second connecting seat 20 is aligned with the avoiding groove 32 of the lock sleeve 30 and the first connecting seat 10 is butted on the first connecting seat 10, and then the lock sleeve 30 is rotated clockwise until the ball 52 rolls to the other end of the sliding slot 11, the ball 52 is limited by the end of the sliding slot 11 and cannot roll continuously, and at this time, the lock sleeve 30 cannot rotate clockwise continuously, which indicates that the lock sleeve 30 has entered into the locking position. At this time, the first limiting protrusion 21 is engaged with the second limiting protrusion 31, so as to lock the second connecting seat 20 on the first connecting seat 10. When unlocking is needed, the lock sleeve 30 is rotated counterclockwise again until the lock sleeve 30 cannot rotate continuously, the lock sleeve 30 enters the unlocking position, and the first limiting protrusion 21 and the second limiting protrusion 31 are separated and enter the avoiding groove 32, so that the second connecting seat 20 and the first connecting seat 10 can be separated.
The locking mechanism is connected with the first connecting seat 10 and the second connecting seat 20 through the lock sleeve 30, when the lock sleeve 30 rotates to the locking position, the first limiting protrusion 21 of the second connecting seat 20 is clamped with the first limiting protrusion 21 of the lock sleeve 30, the second connecting seat 20 is locked on the first connecting seat 10, when the lock sleeve 30 rotates to the unlocking position, the first limiting protrusion 21 is separated from the second limiting protrusion 31 and enters the avoiding groove 32, and the second connecting seat 20 can be separated from the first connecting seat 10. The sliding groove 11 is formed in the outer surface of the first connecting seat 10, so that the ball 52 arranged on the inner surface of the lock sleeve 30 rolls in the sliding groove 11, when the lock sleeve 30 enters the locking position, the ball 52 rolls to one end of the sliding groove 11, so that the lock sleeve 30 cannot continue to rotate, when the lock sleeve 30 enters the unlocking position, the ball 52 rolls to the other end of the sliding groove 11, so that the lock sleeve 30 cannot continue to rotate, when the lock sleeve 30 rotates to the locking position or the unlocking position, the ball 52 can accurately give feedback to a user, so that the user can accurately position the locking position or the unlocking position, and the problem that the lock sleeve 30 cannot accurately lock or unlock the second connecting seat 20 due to over-position or under-position rotation of the lock sleeve 30 is avoided. And realize restricting the rotation range of lock sleeve 30 through ball 52 and the cooperation of spout 11, avoided destroying the helicitic texture on first connecting seat 10 and the lock sleeve 30, guaranteed the screw thread integrality of first connecting seat 10 and lock sleeve 30, reduced the processing degree of difficulty for the lock sleeve 30 is more convenient to the locking of second connecting seat 20 and unblock operation.
Referring to fig. 1 and 2, the inner surface of the lock sleeve 30 is provided with an internal thread 33, and the outer surface of the first connecting seat 10 is provided with an external thread 12 matched with the internal thread 33, so that the lock sleeve 30 can be in threaded fit with the first connecting seat 10, and when the lock sleeve 30 is rotated to lock the lock sleeve 30, the lock sleeve 30 can move in the axial direction, so that the second limiting protrusion 31 compresses the first limiting protrusion 21, and the connection stability of the first connecting seat 10 and the second connecting seat 20 is further improved. Further, the external thread 12 and the sliding groove 11 are spaced, so that the integrity of the external thread 12 is prevented from being damaged, burrs are prevented from appearing on the external thread 12, and the processing difficulty is reduced.
Further, referring to fig. 3, the inner surface of the lock case 30 is provided with a retainer groove 34, the retainer groove 34 extends in the axial direction of the lock case, and the ball 52 is rollably disposed in the retainer groove 34 so as to be axially movable relative to the lock case. Furthermore, the part of the ball 52 protrudes out of the limiting groove 34, so that the part of the ball 52 protruding out of the limiting groove can enter the sliding groove 11, and the sliding groove and the ball are matched to ensure that the ball 52 can limit the rotation range of the lock sleeve 30. Preferably, the retaining groove 34 extends through an edge of one end of the sleeve 30 to facilitate placement of the ball 52 into the retaining groove 34.
Further, in order to avoid interference of the balls 52 with the external threads 12 of the first coupling seat 10 when the lock sleeve 30 is coupled to the first coupling seat 10. The balls 52 can be fixed in the sliding grooves 11 before the lock sleeve 30 is sleeved on the first connecting seat 10. Specifically, referring to fig. 1 and 2, the groove bottom of the sliding chute 11 is further provided with a positioning hole 111, and the elastic member 51 is disposed in the positioning hole 111. Initially, the balls 52 are pressed into the positioning holes 111, when the lock sleeve 30 is sleeved outside the first connecting seat 10 and rotates until the limiting groove 34 is aligned with the positioning holes 111, the balls 52 can enter the limiting groove 34 under the elastic force of the elastic member 51, and at this time, the balls 52 can roll along the sliding groove 11 along with the lock sleeve 30 when the lock sleeve 30 rotates. Further, after the ball 52 enters the limiting groove 34, at this time, the elastic member 51 is restored to the state that the top of the elastic member 51 is flush with the bottom of the sliding slot 11, so that the ball 52 is prevented from entering the positioning hole 111 again during the rolling process along the sliding slot 11. Preferably, the elastic member 51 may be a silica gel column or a rubber column.
Referring to fig. 1, in the present embodiment, the end portion of the first connecting seat 10 is provided with a positioning groove 13 extending along the axial direction, the second connecting seat 20 is provided with a positioning portion 22, and the positioning portion 22 is inserted into the positioning groove 13, so as to ensure the connection stability of the first connecting seat 10 and the second connecting seat 20. Preferably, the positioning groove 13 is a tapered groove, and the positioning portion 22 is a cone structure matched with the shape of the positioning groove 13, so that the coaxiality of the first connecting seat 10 and the second connecting seat 20 is improved by matching the tapered positioning groove 13 with the tapered connecting portion, the coincidence of the central axis of the first connecting seat 10 and the central axis of the second connecting seat 20 is ensured, and the connection stability of the first connecting seat 10 and the second connecting seat 20 is further improved. It should be noted that, in another embodiment, the positioning slot 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. 1, 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 30 is in the locking position, the first limiting protrusion 21 is aligned with the second limiting protrusion 31, and when the lock sleeve 30 is in the unlocking position, the first limiting protrusion 21 is aligned with the avoiding groove 32. It should be understood that, in another embodiment, the orientation protrusion 14 may also be disposed on the second connecting seat 20, and the positioning slot 13 may also be disposed on the first connecting seat 10, so as to also position the circumferential position of the first limiting protrusion 21, which is not described herein again.
Referring to fig. 1, the locking mechanism further includes a shift lever 40, and the shift lever 40 is fixed on the outer surface of the lock sleeve 30, so that the lock sleeve 30 can be driven to rotate by shifting the shift lever 40, and the locking or unlocking operation is more concise and labor-saving. Preferably, the shift lever 40 is welded to the outer surface of the lock sleeve 30, or the shift lever 40 is adhered to the outer surface of the lock sleeve 30; or the shift lever 40 and the lock sleeve 30 are of an integrally formed structure, so that holes are prevented from being formed in the lock sleeve 30, the internal thread 33 of the lock sleeve 30 is prevented from being damaged, and the integrity of the internal thread 33 of the lock sleeve 30 is ensured.
In another aspect, the present application further provides an endoscope sheath, 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 with the first connecting seat 10.
The endoscope device of one embodiment comprises an endoscope body, a sheath and the locking mechanism of any one of the above embodiments, wherein the sheath is connected with the first connecting seat 10, and preferably, the sheath can be welded with the first connecting seat 10 or integrally formed. 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.
The endoscope sheath is connected with the outer sheath and the inner sheath through the locking mechanism, or the endoscope device is connected with the endoscope body and the endoscope 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 30, and when the lock sleeve 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 30 in a clamping mode, so that the endoscope body and the endoscope sheath are connected stably, when the lock sleeve 30 rotates to the unlocking position, the first limiting bulge 21 is separated from the second limiting bulge 31 and enters the avoidance groove 32, and the endoscope body and the endoscope sheath can be separated. The sliding groove 11 is formed in the outer surface of the first connecting seat 10, so that the ball 52 arranged on the inner surface of the lock sleeve 30 rolls in the sliding groove 11, when the lock sleeve 30 enters the locking position, the ball 52 rolls to one end of the sliding groove 11, so that the lock sleeve 30 cannot continue to rotate, when the lock sleeve 30 enters the unlocking position, the ball 52 rolls to the other end of the sliding groove 11, so that the lock sleeve 30 cannot continue to rotate, when the lock sleeve 30 rotates to the locking position or the unlocking position, the ball 52 can accurately give feedback to a user, so that the user can accurately position the locking position or the unlocking position, and the problem that the lock sleeve 30 cannot lock or unlock the second connecting seat 20 due to over-position or under-position rotation of the lock sleeve 30 is avoided. And realize restricting the rotation range of lock sleeve 30 through ball 52 and the cooperation of spout 11, avoided destroying the helicitic texture on first connecting seat 10 and the lock sleeve 30, guaranteed the screw thread integrality of first connecting seat 10 and lock sleeve 30, reduced the processing degree of difficulty for the lock sleeve 30 is more convenient to the locking of second connecting seat 20 and unblock operation.
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 express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the 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," "secured," and the like are to be construed broadly and can, 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 connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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 latch 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 is sleeved outside the first connecting seat and the second connecting seat, one end of the lock sleeve, which is close to the second connecting seat, is provided with a second limiting protrusion and an avoidance groove, and the lock sleeve 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 unlocking position is realized, the first limiting bulge is separated from the second limiting bulge and enters the avoidance groove;
the ball is rotatably arranged on the inner surface of the lock sleeve and is in rolling fit with the sliding groove; when the lock sleeve enters the locking position, the ball is driven to roll to one end of the sliding groove and abut against the sliding groove for limiting; when the lock sleeve enters the unlocking position, the ball is driven to roll to the other end of the sliding groove and abut against the sliding groove for limiting.
2. The lock mechanism according to claim 1, wherein the lock sleeve is provided on an inner surface thereof with a stopper groove extending in an axial direction of the lock sleeve, the ball is rollably disposed in the stopper groove, and a part of the ball protrudes from the stopper groove.
3. The locking mechanism of claim 2, wherein a positioning hole is formed at the bottom of the sliding groove, and an elastic member is arranged in the positioning hole; at the beginning, the ball is pressed in the locating hole, when the lock sleeve is sleeved outside the first connecting seat and rotates to the limit groove and the locating hole are aligned, the ball enters the limit groove under the elastic action of the elastic piece, and at the moment, the top of the elastic piece is flush with the groove bottom of the sliding groove.
4. The locking mechanism of claim 1 wherein the inner surface of the sleeve is provided with an internal thread, the outer surface of the first connector is provided with an external thread that mates with the internal thread, and the external thread is spaced from the channel.
5. The locking mechanism according to claim 1, wherein one of the first connecting seat and the second connecting seat is provided with a positioning groove extending along the axial direction, and the other of the first connecting seat and the second connecting seat is provided with a positioning portion inserted into the positioning groove.
6. The locking mechanism of claim 5 wherein the detent is a tapered groove and the detent is a tapered structure matching the shape of the detent.
7. 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.
8. The locking mechanism of claim 1, further comprising a lever secured to an outer surface of the sleeve.
9. The locking mechanism of claim 8 wherein said toggle is welded to an outer surface of said sleeve; or the deflector rod is adhered to the outer surface of the lock sleeve; or the deflector rod and the lock sleeve are of an integrally formed structure.
10. An endoscopic sheath comprising an outer sheath, an inner sheath, and the locking mechanism of any one of claims 1-9, wherein the outer sheath is connected to the first connecting hub, and the inner sheath is connected to the second connecting hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220402780.2U CN216951179U (en) | 2022-02-25 | 2022-02-25 | Locking mechanism and endoscope sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220402780.2U CN216951179U (en) | 2022-02-25 | 2022-02-25 | Locking mechanism and endoscope sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951179U true CN216951179U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220402780.2U Active CN216951179U (en) | 2022-02-25 | 2022-02-25 | Locking mechanism and endoscope sheath |
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| Country | Link |
|---|---|
| CN (1) | CN216951179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117599225A (en) * | 2024-01-24 | 2024-02-27 | 浙江华诺康科技有限公司 | Mirror sheath type sterilizing box |
-
2022
- 2022-02-25 CN CN202220402780.2U patent/CN216951179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117599225A (en) * | 2024-01-24 | 2024-02-27 | 浙江华诺康科技有限公司 | Mirror sheath type sterilizing box |
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