CN220706137U - Lockable joint and endoscope - Google Patents

Abstract

The utility model discloses a lockable joint and an endoscope, wherein the joint is used for connecting a male head and a female head, the joint comprises a base, a lock ring, a lock pin fixing piece and an elastic piece, a base hole is formed in the base in a hollow mode, a protruding mounting seat is arranged on the outer wall of the base, and a penetrating mounting hole is formed in the mounting seat and communicated with the base hole; the lock ring is sleeved on the periphery of the base, and an arc-surface groove with gradually changed distance from the center point of the lock ring is formed in the inner wall; the lock pin fixing piece is detachably connected with the mounting seat; the lock pin is arranged in the lock pin fixing piece in a penetrating way, and one end of the lock pin extends out of the mounting seat and is abutted with the cambered surface groove; the elastic piece is arranged between the lock pin and the lock pin fixing piece; the female head is detachably connected with the base; the male head is provided with a blind hole along the radial direction and corresponds to the position of the mounting hole. The lockable joint and the endoscope realize the locking of the male joint and the female joint after the plugging by arranging the detachable rotatable joint structure, prevent the loose during the use and achieve the effect of firm and reliable connection.

Description

Lockable joint and endoscope

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a lockable joint and an endoscope.

Background

At present, the common male and female connectors are inserted and used, and the male and female connectors are easily loosened without corresponding connectors to cause inconvenience in use.

Taking an endoscope as an example, the endoscope is widely applied to the detection fields of industry and medical treatment, particularly to detection and treatment in the medical industry. The endoscope generally comprises a hand-held lens body part and a host terminal, wherein the hand-held lens body part can be manually operated to extend into a human body, focus is visually inspected and sampled, the host terminal displays an internal picture of the human body, and the hand-held lens body part and the host terminal are spliced and matched with a male head of the host terminal through a female head of the hand-held lens body part. The main machine terminal of the current endoscope mainly adopts a desk display main machine and is connected with the handle part of the hand-held endoscope body through a cable, so that the endoscope system is huge and heavy and is not convenient to carry and move, and the doctor cannot carry the endoscope system when going out to visit the doctor; a few host terminals adopt a detachable portable display, but the locking function between the male head and the female head is not realized, so that the normal use of the endoscope system is easily affected due to falling.

Disclosure of Invention

The utility model mainly solves the technical problems of providing a lockable joint and an endoscope, solving the problem that the connection of a male head and a female head is easy to loosen, and avoiding the defects.

In order to solve the technical problems, the utility model adopts a technical scheme that: providing a lockable joint for connecting a male and female head that are mutually spliced;

the connector comprises a base, a lock ring, a lock pin fixing piece and an elastic piece, wherein a base hole is formed in the base in a hollow mode, a protruding mounting seat is arranged on the outer wall of the base, a penetrating mounting hole is formed in the mounting seat, and the mounting hole is communicated with the base hole; the lock ring is sleeved on the periphery of the base, and an arc-surface groove with gradually changed distance from the center point of the lock ring is formed in the inner wall; the lock pin fixing piece is detachably connected with the mounting seat; the lock pin penetrates through the lock pin fixing piece, and one end of the lock pin extends out of the mounting seat to be abutted with the cambered surface groove; the elastic piece is arranged between the lock pin and the lock pin fixing piece;

the female head is detachably connected with one end of the base hole;

the male head is provided with a blind hole along the radial direction, the male head is inserted into the female head through the other end of the base hole and is connected with the female head, and the blind hole corresponds to the mounting hole in position when the male head and the female head are connected;

when the lock pin contacts with the surface of the cambered surface groove farthest from the center point of the lock ring, the male head and the female head can be separated; when the lock ring is rotated to the nearest surface contact between the lock pin and the center point of the lock ring, the lock pin is extruded and inserted into the blind hole, the male head and the female head are locked at the moment, the elastic piece is compressed, when the lock ring is reversed again, the elastic force of the elastic piece is released, and the lock pin is reset.

Wherein, the lock ring is coaxial with the base hole, the maximum distance between the cambered surface groove and the center point of the lock ring is greater than or equal to the sum of the radius of the base hole and the length of the lock pin, and the minimum distance between the cambered surface groove and the center point of the lock ring is greater than the difference between the sum of the radius of the base hole and the length of the lock pin and the depth of the blind hole.

The connector further comprises a positioning structure, wherein the positioning structure comprises a first plane axially arranged on the inner wall of the base hole and a second plane axially arranged on the outer wall of the male head;

the extending directions of the mounting holes and the blind holes are perpendicular to the first plane and the second plane respectively, and the distribution angles of the blind holes and the first plane on the male head are the same as the distribution angles of the mounting holes and the second plane on the base;

the depth of the blind hole inserted into the base hole is the same as the distance between the mounting hole and the top end of the base.

The inner wall of one end of the base hole is provided with a first internal thread, the outer wall of the female head is provided with a first external thread which is matched with the first internal thread, and the female head is in threaded connection with the base;

the connector further comprises a locking nut which is matched with the external thread and used for locking the female head.

The mounting hole is internally provided with a second internal thread, the outer wall of the locking pin fixing piece is provided with a second external thread which is matched with the second internal thread, and the locking pin fixing piece is in threaded connection with the mounting seat.

The connector also comprises a lock ring shell, wherein the lock ring shell is sleeved on the periphery of the lock ring and fixedly connected with the lock ring;

the outer wall of the lock ring shell is also provided with a plurality of stripes along the axial direction, and the end surface far away from the base is also provided with a rotary mark.

The male head is axially provided with a plug and a connecting seat, one end of the plug is fixedly connected with the connecting seat, and the blind hole is formed in the plug;

the plug is a cylinder, the diameter of the base hole is larger than that of the plug, the radial width of the connecting seat is larger than that of the base hole, and when the male head is inserted into the base, one end face of the connecting seat is abutted to the base.

The locking device comprises a base, a locking ring, a locking nut and a locking nut, wherein a first sealing ring is further arranged between the base and the locking ring, and a second sealing ring is further arranged between the locking nut and the base.

Wherein the elastic piece is a spring.

In order to solve the technical problem, the utility model also provides an endoscope, which comprises the joint as described in any one of the above, an endoscope host and a handle assembly, wherein one end of the male head is connected with the endoscope host, and one end of the female head is connected with the handle assembly.

Compared with the prior art, the lockable joint has the following beneficial effects: through setting up detachable rotatable joint structure, realized the locking after male head and female head grafting, the pine takes off when preventing to use, has reached firm in connection reliable effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.

FIG. 1 is a schematic view of the lockable joint of the present utility model;

FIG. 2 is a cross-sectional view of a joint;

FIG. 3 is a schematic diagram of the explosive structure of FIG. 1;

FIG. 4 is a schematic view of the construction of the locking ring;

FIG. 5 is a schematic diagram of a split structure of a male;

FIG. 6 is a schematic cross-sectional view of the female with the connector installed;

FIG. 7 is a schematic diagram of the structure of the male and female connectors prior to mating;

FIG. 8 is a schematic diagram of the structure of the male and female connectors after mating;

FIG. 9 is a schematic view of the internal structure of the male of FIG. 8 when the male is not locked by the locking pin;

fig. 10 is a partial enlarged view of a portion a in fig. 9;

FIG. 11 is a schematic view of the internal structure of the male of FIG. 8 when locked by the locking pin;

fig. 12 is a partial enlarged view of the portion B in fig. 11;

FIG. 13 is a schematic view of the structure of the male plug at a previous angle;

fig. 14 is a schematic view of another angle of the male plug prior to insertion into the connector.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

All directional indications (such as up, down, left, right, front, back … …) in embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. The terms "first," "second," and the like in this application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 to 14, fig. 1 is a schematic diagram of a lockable joint according to the present utility model, which is used for connecting a male head 100 and a female head 200 that are mutually inserted, wherein a plug 101 is disposed on an axial end surface of the male head 100, and a jack for inserting the male head 100 is disposed on the female head 200 along the axial direction, and the male head 100 and the female head 200 are inserted through the plug 101 and the jack.

In one embodiment, the number of the plug 101 and the jack inserting structures may be plural, and the corresponding jacks are also plural, and the distribution situation is matched with the distribution of the plug 101.

The joint 300 in the present application includes a base 1, a lock ring 2, a lock pin 3, a lock pin holder 4, and an elastic member 5. In one embodiment, the base 1 may be a hollow cylinder, and the inside of the base is hollow to form a base hole 11, and the base hole 11 penetrates through two axial ends of the base 1. For convenience of description, the axial direction of the base hole 11 will be referred to as a vertical direction, and the radial direction will be referred to as a horizontal direction. When the male 100 and the female 200 are connected, they are inserted into the base 1 from two ends of the base hole 11 in the vertical direction.

Wherein, be equipped with convex mount pad 6 on the outer wall of base 1, mount pad 6 has seted up the mounting hole 61 that runs through mount pad 6, and mounting hole 61 communicates with each other with base hole 11, and corresponds with blind hole 102 position. The mounting seat 6 may also be a hollow cylinder, the extending direction is horizontal and vertical to the base 1, the mounting hole 61 is a through hole penetrating through the mounting seat 6 horizontally, and one end of the mounting hole 61 near the base 1 is communicated with the base hole 11.

The proximal end of the locking pin 3 in this application is cylindrical and can withstand large stresses, facilitating insertion into the blind bore 102 from within the mounting bore 61 to lock the male head 100. The distal end head is semicircular, is convenient to be abutted with the cambered surface groove 21 and slides along the cambered surface groove 21. The locking pin fixing member 4 is shaped as a hollow housing, and the locking pin 3 can be accommodated therein.

The lock pin fixing piece 4 is detachably connected with the mounting seat 6, the lock pin 3 penetrates through the lock pin fixing piece 4, the length of the lock pin 3 is larger than that of the mounting seat 6 and the lock pin fixing piece 4, and therefore the lock pin 3 is at least partially exposed from the lock pin fixing piece 4 and the mounting seat 6. For ease of description, the end proximal to the center of the base aperture 11 will be referred to as the proximal end and the end distal to the center of the base aperture 11 will be referred to as the distal end. The elastic member 5 is provided between the locking pin 3 and the locking pin fixing member 4, and the elastic member 5 is in a compressed state when the locking pin fixing member 4 mounts the locking pin 3 in the mounting hole 61.

The lock ring 2 in the application is sleeved on the periphery of the base 1, and a cambered surface groove 21 gradually changing from the center point of the lock ring 2 is formed in the inner wall. The lock ring 2 is coaxial with the base 1, and the radius of the inner wall of the lock ring 2 is slightly larger than the length of the farthest end of the mounting seat 6 from the center point of the base 1, so that the lock ring 2 cannot collide with the mounting seat 6 when being sleeved on the periphery of the base 1. The cambered surface groove 21 is a gradual groove formed by recessing on the inner wall of the locking ring 2, wherein in one embodiment, the distance between the cambered surface groove 21 and the center point of the locking ring 2 gradually increases along the clockwise direction.

The female 200 in this application may extend into one end of the base aperture 11 to be removably coupled to the base 1. The male head 100 is provided with a plug 101 on one axial end surface, the plug 101 is provided with a blind hole 102 along the radial direction, the plug 101 is inserted into the other end of the base hole 11 to be connected with the female head 200, and the blind hole 102 corresponds to the mounting hole 61 in position when the plug 101 is connected with the base hole 11.

Based on the above structure, when the lock ring 2 is sleeved on the periphery of the base 1, the elastic member 5 is in a compressed state, so that the elastic member 5 drives the lock pin 3 to move in a distal direction, and the distal end of the lock pin 3 extends from the distal end of the mounting seat 6. Since the distance from the distal end of the mounting seat 6 to the center of the base hole 11 is close to the radius of the inner wall of the lock ring 2, the distal end of the lock pin 3 abuts against the arc groove 21. In one embodiment, when the lock ring 2 is mounted on the base 1, the lock pin 3 is aligned with the end of the arc groove 21 with the greatest distance from the center point of the lock ring 2, at this time, the distal end of the lock pin 3 extends from the distal end of the mounting hole 61 and contacts the surface of the arc groove 21 furthest from the center point of the lock ring 2, at this time, the male head 100 and the female head 200 located in the base hole 11 can be separated. When the lock ring 2 is rotated in the counterclockwise direction after the installation is completed, the distance between the arc groove 21 and the center point of the lock ring 2 is gradually reduced, the space between the lock ring 2 and the mounting seat 6 is also gradually reduced, the lock pin 3 is pushed to move from the distal end to the proximal end, when the lock ring 2 is rotated until the lock pin 3 contacts with the surface of the arc groove 21 closest to the center point of the lock ring 2, that is, the distance between the arc groove 21 and the center point of the lock ring 2 is minimum, the lock pin 3 is pressed, the distal end of the lock pin 3 is completely pushed into the mounting hole 61 by the arc groove 21, the proximal end of the lock pin 3 is exposed from the proximal end of the mounting hole 61, and extends into the base hole 11 communicated with the proximal end of the mounting hole 61. At this time, since the plug 101 of the male 100 is inserted into the base hole 11 in advance, and the blind hole 102 corresponds to the position of the mounting hole 61 after insertion, the proximal end of the lock pin 3 is inserted into the blind hole 102, and the male 100 cannot be pulled out from the base 1, and the male 100 and the female 200 are locked.

When the male 100 and the female 200 are in the locked state, the elastic member 5 is compressed, and when the lock ring 2 is reversed again, the elastic force of the elastic member 5 is released, the lock pin 3 is reset, the lock pin is removed from the blind hole 102, and the male 100 can be pulled out from the female 200.

Through the structure, a rotatable joint structure is formed, so that the male head 100 and the female head 200 are locked after being spliced, the loose joint is prevented from being released during use, and the effect of firm and reliable connection is achieved.

The lock ring 2 and the base hole 11 are coaxial in the application, and the maximum distance between the cambered surface groove 21 and the center point of the lock ring 2 is larger than or equal to the sum of the radius of the base hole 11 and the length of the lock pin 3, so when the lock ring 2 rotates to the position that the lock pin 3 is abutted with the farthest end of the cambered surface groove 21, the lock pin 3 is subjected to the elastic force of the elastic piece 5 to the far end and moves to the far end, the far end of the lock pin 3 extends out of the mounting seat 6, the near end is completely retracted into the mounting seat 6, and the male head 100 positioned in the base hole 11 cannot form transverse obstruction. The minimum distance between the cambered surface groove 21 and the center point of the lock ring 2 is larger than the difference between the sum of the radius of the base hole 11 and the length of the lock pin 3 and the depth of the blind hole 102, when the lock ring 2 rotates until the lock pin 3 abuts against the nearest end of the cambered surface groove 21, the far end of the lock pin 3 is driven to move towards the near end by the cambered surface groove 21, the far end of the lock pin 3 is completely retracted into the mounting hole 61, the near end extends out of the mounting seat 6 into the base hole 11, and the near end of the lock pin 3 enters the blind hole 102 to clamp the male head 100, so that the male head 100 cannot be separated from the female head 200, and the locking effect is realized.

The joint 300 in the application further comprises a positioning structure, the positioning structure comprises a first plane 111 axially arranged on the inner wall of the base hole 11 and a second plane 103 axially arranged on the outer wall of the plug 101, the extending directions of the mounting hole 61 and the blind hole 102 are respectively perpendicular to the first plane 111 and the second plane 103, the distribution angle of the blind hole 102 and the first plane 111 on the plug 101 is identical to the distribution angle of the mounting hole 61 and the second plane 103 on the base 1, and the depth of the blind hole 101 entering the base hole 11 is identical to the distance of the mounting hole 61 from the top end of the base 1.

The cross section shapes of the base hole 11 and the plug 101 are circular, and the first plane 111 and the second plane 103 are respectively arranged along the axial direction, so that before the plug 101 of the male head 100 enters the base hole 11, only the first plane 111 is aligned with the second plane 103, the plug 101 can enter, and the unique installation angle of the male head 100 and the base 1 is ensured.

The distribution angle of the blind holes 102 and the first plane 111 on the plug 101 is the same as the distribution angle of the mounting holes 61 and the second plane 103 on the base 1, so that when the male 100 is inserted into the base 1, the orientations of both the mounting holes 61 and the blind holes 102 also correspond. Meanwhile, after the male head 100 and the female head 200 are inserted, the depth of the blind hole 101 entering the base hole 11 is the same as the distance between the mounting hole 61 and the top end of the base 1, so that the blind hole 101 and the mounting hole 61 are located on the same plane.

The arrangement directions of the first plane 111 and the second plane 103 are all along the vertical direction, and the mounting hole 61 and the blind hole 102 are all along the horizontal direction, so that the mounting hole 61 and the blind hole 102 can be correspondingly formed in the same plane, and the lock pin 3 can enter and exit in the mounting hole 61 and the blind hole 102.

Be equipped with first internal thread on the one end inner wall of base hole 11 in this application, the outer wall of female head 200 is equipped with the first external screw thread of looks adaptation, female head 200 and base 1 threaded connection. The joint 300 further comprises a locking nut 7, the locking nut 7 being adapted to the external thread for locking the female head 200. In the use process, the female head 200 is usually fixed, so that the female head 200 is not shifted when being inserted, and when the male head 100 and the female head 200 are matched for use, the male head 100 is only required to be inserted or pulled out, so that the stability during use is ensured.

The second internal thread is arranged in the mounting hole 61 in the application, the outer wall of the locking pin fixing piece 4 is provided with the second external thread which is matched with the second internal thread, and the locking pin fixing piece 4 is in threaded connection with the mounting seat 6. When the locking pin is installed, firstly, the elastic piece 5 is sleeved on the periphery of the locking pin 3, secondly, the elastic piece 5 and the locking pin 3 are placed in the locking pin fixing piece 4 to be clamped, and then the locking pin fixing piece 4 is screwed into the installation hole 61, so that the locking pin fixing piece 4 is relatively fixed, the locking pin 3 can axially move in the locking pin fixing piece 4, and the elastic piece 5 compresses or releases elastic force along with the movement of the locking pin 3.

Of course, in other embodiments, the locking pin fixing member 4 may be adhered to the mounting seat 6 or fixed by other connection manners, and may also meet the use requirement, which is also contemplated by the present application.

The joint 300 in the present application further includes a lock ring housing 8, the lock ring housing 8 being fitted around the outer circumference of the lock ring 2 and fixedly connected with the lock ring 2. In one embodiment, the lock ring housing 8 is also in the shape of a hollow annular shell in which the lock ring 2 is received, and the outer wall of the lock ring 2 is bonded to the inner wall of the lock ring housing 8 so that the two are fixed as one body. The lock ring housing 8 protects the lock ring 2 and facilitates the user to rotate the lock ring 2 by rotating the exchanged housing 8 when in use.

A plurality of vertical stripes 81 have still been seted up along the axial on the outer wall of catch shell 8 in this application, increase frictional force, rotate when being convenient for the user to use. The end surface of the lock ring shell 8 far away from the base 1 is also provided with a rotary mark, namely the end surface far away from the base 1, namely the opposite surface when the user uses, and the rotary mark can be a rotary arrow, a locking and unlocking mark and is used for guiding the user to use. The rotation arrow may be the same as the rotation direction of the arc groove 21, the lock flag may correspond to one end of the minimum distance between the arc groove 21 and the center point of the lock ring 2, and the unlock flag may correspond to one end of the maximum distance between the arc groove 21 and the center point of the lock ring 2.

The male 100 in the present application further includes a connection base 104, and one end of the plug 101 is fixedly connected with the connection base 104. The plug 101 is cylindrical, and the diameter of the base hole 11 is slightly larger than the diameter of the plug 101, so that the plug 101 can be inserted into the base hole 11. The radial width of the connecting seat 104 is larger than the diameter of the base hole 11, when the male head 100 is inserted into the base 1, one end face of the connecting seat 104 is abutted against the base 1, and the mounting hole 61 and the blind hole 102 are located on the same plane at this time, so that the corresponding mounting positions of all components can be ensured.

Still be equipped with first sealing washer 9 between base 1 and the catch 2 in this application for to the junction of base 1 and catch 2 seal, prevent that water or debris from getting into the grafting that influences public head 100 and female head 200. A second sealing ring is further arranged between the locking nut 7 and the base 1, and is used for tightly connecting and not loosening the female head 200 and the base 1. The first sealing ring 9 and the second sealing ring can be rubber sealing rings.

The elastic member 5 in this application is a spring that urges the lock pin 3 to return by compression and release of elastic force. Of course, the elastic member 5 may be a hollow rubber cylinder or a rubber block in the present application, as long as it can be placed between the locking pin 3 and the locking pin 3 fixing member to compress and release the elastic force.

The lockable joint of the application is installed and used in the following modes: firstly, the elastic piece 5 is sleeved outside the lock pin 3, secondly, the elastic piece 5 and the lock pin are placed in the lock pin fixing piece 4, then the lock pin fixing piece 4 is installed on the installation seat 6, then the lock ring 2 and the lock ring shell 8 are sleeved on the periphery of the base 1, and finally, the female head 200 is fixedly installed on one end of the base 1. According to the rotary mark 82, the lock ring shell 8 is rotated to the unlocking position, at the moment, the proximal end of the lock pin 3 does not enter the base hole 11, the male head 100 can be inserted from the other end of the base 1 and is connected with the female head 200 in an inserting mode, the lock ring shell 8 is rotated to the locking position after the male head and the female head are connected in an inserting mode, at the moment, the proximal end of the lock pin 3 enters the base hole 11 and is inserted into the blind hole 102, the male head 100 is clamped, the male head 200 cannot be pulled out to be separated from the female head 200, the locking effect is achieved, and the male head 100 and the female head 200 are prevented from being loosened when in use. When unlocking is required, the lock ring housing 8 is again rotated to the unlocked position, at which point the male 100 may be disconnected from the female 200.

In order to solve the technical problem, the utility model also provides an endoscope, which comprises the joint 300, an endoscope host and a handle assembly, wherein one end of the male head 100 is connected with the endoscope host, and one end of the female head 200 is connected with the handle assembly, so that the endoscope host and the handle assembly can be conveniently connected, meanwhile, the connection reliability of the endoscope host and the handle assembly can be ensured not to be loosened when the endoscope works, and the use stability of the movable detachable endoscope is improved.

By using the lockable joint and the endoscope, through arranging the detachable rotatable joint structure, the locking of the male joint and the female joint after the male joint and the female joint are spliced is realized, the loose joint is prevented during use, and the effect of firm and reliable connection is achieved. Meanwhile, the joint can be applied to an endoscope, so that the movable detachable portable endoscope host and the endoscope handle assembly can be firmly and reliably connected.

The foregoing description is only of embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A lockable joint for connecting a male and female head that are mutually plugged, characterized in that:

the connector comprises a base, a lock ring, a lock pin fixing piece and an elastic piece, wherein a base hole is formed in the base in a hollow mode, a protruding mounting seat is arranged on the outer wall of the base, a penetrating mounting hole is formed in the mounting seat, and the mounting hole is communicated with the base hole; the lock ring is sleeved on the periphery of the base, and an arc-surface groove with gradually changed distance from the center point of the lock ring is formed in the inner wall; the lock pin fixing piece is detachably connected with the mounting seat; the lock pin penetrates through the lock pin fixing piece, and one end of the lock pin extends out of the mounting seat to be abutted with the cambered surface groove; the elastic piece is arranged between the lock pin and the lock pin fixing piece;

the female head is detachably connected with one end of the base hole;

the male head is provided with a blind hole along the radial direction, the male head is inserted into the female head through the other end of the base hole and is connected with the female head, and the blind hole corresponds to the mounting hole in position when the male head and the female head are connected;

when the lock pin contacts with the surface of the cambered surface groove farthest from the center point of the lock ring, the male head and the female head can be separated; when the lock ring is rotated to the nearest surface contact between the lock pin and the center point of the lock ring, the lock pin is extruded and inserted into the blind hole, the male head and the female head are locked at the moment, the elastic piece is compressed, when the lock ring is reversed again, the elastic force of the elastic piece is released, and the lock pin is reset.

2. The lockable joint of claim 1, wherein the locking ring is coaxial with the base bore, a maximum distance between the arcuate slot and a center point of the locking ring being greater than or equal to a sum of a radius of the base bore and a length of the locking pin, and a minimum distance between the arcuate slot and the center point of the locking ring being greater than a difference between the sum of the radius of the base bore and the length of the locking pin and a depth of the blind bore.

3. The lockable joint of claim 1, further comprising a locating structure comprising a first planar surface axially disposed on the inner wall of the base hole and a second planar surface axially disposed on the outer wall of the male head;

the extending directions of the mounting holes and the blind holes are perpendicular to the first plane and the second plane respectively, and the distribution angles of the blind holes and the first plane on the male head are the same as the distribution angles of the mounting holes and the second plane on the base;

the depth of the blind hole inserted into the base hole is the same as the distance between the mounting hole and the top end of the base.

4. The lockable joint of claim 1, wherein the base hole has a first internal thread on an inner wall at one end, the outer wall of the female head has a first external thread that is adapted, and the female head is threadably coupled to the base;

the connector further comprises a locking nut which is matched with the external thread and used for locking the female head.

5. The lockable joint of claim 1, wherein the mounting hole has a second internal thread, the outer wall of the locking pin fixture has a second external thread that is adapted, and the locking pin fixture is threadably coupled to the mounting block.

6. The lockable joint of any of claims 1-5, further comprising a lock ring housing that is disposed around the circumference of the lock ring and fixedly coupled thereto;

the outer wall of the lock ring shell is also provided with a plurality of stripes along the axial direction, and the end surface far away from the base is also provided with a rotary mark.

7. A lockable joint according to any of claims 1-3, characterized in that the male head is provided with a plug and a connection seat in the axial direction, one end of the plug is fixedly connected with the connection seat, and the blind hole is opened on the plug;

the plug is a cylinder, the diameter of the base hole is larger than that of the plug, the radial width of the connecting seat is larger than that of the base hole, and when the male head is inserted into the base, one end face of the connecting seat is abutted to the base.

8. The lockable joint of claim 4, further comprising a first seal ring between the base and the locking ring, and a second seal ring between the locking nut and the base.

9. The lockable joint of claim 1, wherein the resilient member is a spring.

10. An endoscope comprising the joint of any one of claims 1-9, further comprising an endoscope host and a handle assembly, wherein one end of the male head is connected to the endoscope host and one end of the female head is connected to the handle assembly.