WO2018068348A1

WO2018068348A1 - Locking device

Info

Publication number: WO2018068348A1
Application number: PCT/CN2016/104329
Authority: WO
Inventors: 朱林; 辛栋; 徐尚祥
Original assignee: 深圳市兆威机电有限公司
Priority date: 2016-10-11
Filing date: 2016-11-02
Publication date: 2018-04-19
Also published as: CN106640869B; CN106640869A

Abstract

A locking device, comprising an insertion box (1), a plug (2), a self-reset key cylinder (3), and a rolling locking piece (4). The self-reset key cylinder (3) and the plug (2) are slidably connected in the medial axis direction of the plug (2); an inverted cone-shaped keyhole (5) for allowing the plug (2) and the self-reset key cylinder (3) to be inserted into is formed in the insertion box (1); an accommodating through hole (6) with a side opening is formed in the self-reset key cylinder (3); the rolling locking piece (4) is disposed in the accommodating through hole (5); locking piece guiding mechanisms matching each other are disposed between the self-reset key cylinder (3) and the plug (2); in an inserting locking state, the rolling locking piece (4) protrudes out of the side wall of the self-reset key cylinder (3) and can snap into the opening of the inverted cone-shaped keyhole (5).

Description

Title of the invention: locking device

Technical field

[0001] The present invention relates to the field of connector technology, and more particularly to a locking device.

Background technique

[0002] The locking structure has a wide range of applications in many fields, such as the locking connection of the PTZ camera on the drone, the locking connection device for placing the mobile phone on the display cabinet, and the lock for fixing the mobile phone on the wireless charging device. Tightly connect the device, etc. The existing locking device has a snap-in quick-release structure, an elastic locking structure, a permanent magnet locking structure and the like. The snap-in quick-release device has the advantages of less parts, simple structure and convenient operation, but the snap-type quick-release device is inconvenient to operate after unlocking; the elastic body is used to limit the locking times of the elastic body material. Less, and the locking force is relatively low; the permanent magnet locking device is easy to lock, but there is magnetic interference to the electronic product, which has certain limitations.

technical problem

[0003] An object of the present invention is to provide a locking device, which is intended to solve the problem that the connecting device for connecting a fixed mobile terminal in the prior art can not meet the convenience of plugging and unplugging, high locking force and no interference to electronic products. The issue of three technical indicators.

Problem solution

Technical solution

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: providing a locking device, comprising: a plug-in box, a plug, a self-resetting lock cylinder and at least one rolling lock block, the self-resetting lock cylinder and the a plug is slidably connected in a direction of a central axis of the plug, and the plug box is provided with a reverse tapered locking hole for receiving the plug and the self-resetting lock cylinder, and the self-resetting lock core is provided with a side The through hole is disposed in the through hole, the rolling lock block is disposed in the receiving through hole, and the locking block guiding mechanism is matched between the self-resetting lock core and the plug, so that the rolling The lock block can roll along the direction of the central axis of the plug and the radial direction of the plug as the self-resetting lock cylinder slides, and the slide lock block protrudes from the self-reset lock in the inserted lock state The side wall of the core and can catch the cornice of the inverted tapered keyhole.

[0005] Further, the lock block guiding mechanism is a set of inclined pitch mechanism. [0006] Further, the plug includes a first locking portion, a first guiding portion and a mounting portion, a front end of the first guiding portion is connected to the first locking portion, and a rear end is connected to the mounting portion. a middle of the first guiding portion is provided with a guiding through hole parallel to the central axis of the first guiding portion, and a lower portion of the first locking portion is provided with a slanting top inclined to one side, and the inclined top is located at the middle Guided above the through hole.

[0007] Further, the mounting portion is provided with a plurality of mounting holes.

[0008] Further, the self-resetting lock cylinder includes a second locking portion, a second guiding portion and a self-resetting mechanism, and a front end of the second guiding portion is connected with the second locking portion, and the rear end is The second guiding portion is matched with the shape of the guiding through hole, and is disposed in the guiding through hole, and the second locking portion is provided with the inclined top The inclined surface cooperates with the adjusting inclined surface, and the receiving through hole is disposed on the second locking portion.

[0009] Further, the rolling lock block is a needle roller, and the receiving through hole is a horn-shaped strip-shaped through hole, and a long axis thereof is perpendicular to a central axis of the second guiding portion, and the receiving through hole is The inner side opening is located on the adjusting inclined surface, and the outer side opening is located on the outer side wall of the second locking portion, the outer diameter of the rolling lock block is smaller than the width of the inner side opening, and is larger than the outer side The width of the mouth.

[0010] Further, the rolling lock block has a one-to-one correspondence with the receiving through holes.

[0011] Further, the self-resetting mechanism includes a guiding rod, a compression spring disposed on an outer circumference of the guiding rod, and a limiting protrusion disposed at a front end of the guiding rod, a front end of the limiting protrusion and the The front end of the second guiding portion is connected, and the front end of the pressing spring can abut against the rear end surface of the limiting protrusion, and the front end surface of the limiting protrusion can abut against the rear end surface of the mounting portion.

[0012] Further, one side of the limiting protrusion is further provided with an auxiliary unlocking slope.

[0013] Further, an auxiliary unlocking arm that cooperates with the auxiliary unlocking ramp is further included.

[0014] Further, an end of the auxiliary unlocking arm that is in contact with the auxiliary unlocking ramp is provided with an auxiliary reinforcing bevel that matches the inclination of the auxiliary unlocking ramp.

[0015] Further, an insertion guide slope is further disposed at the mouth of the inverted tapered keyhole.

[0016] Further, the side slope angle β of the inverted tapered keyhole is 5°-10°.

[0017] Further, the front end of the first locking portion is provided with an auxiliary insertion protrusion that can cover the front end surface of the second locking portion, and the front end surface of the auxiliary insertion protrusion is a circular surface.

[0018] Further, an angle α between the inclined surface of the inclined top and the inner wall of the guiding through hole is 15°-35°. Advantageous effects of the invention

Beneficial effect

[0019] The locking device provided by the present invention has the beneficial effects that: compared with the prior art, the locking device of the present invention, through the sliding fit of the plug and the lock cylinder, makes the rolling lock block in the process of insertion or extraction. During the sliding process, there are two components parallel to the axial direction of the plug and perpendicular to the axial direction of the plug, which can make the rolling lock block protrude from the lock cylinder or retract into the lock core, thereby controlling the relative sliding of the control plug and the lock cylinder. The purpose of the locking state of the locking device is that the insertion and removal process is convenient, the locking force is high, and no interference is caused to the electronic product.

Brief description of the drawing

DRAWINGS

1 is a perspective structural view of a locking device according to an embodiment of the present invention;

2 is a schematic perspective view showing the assembled structure of a plug, a self-resetting lock cylinder and a rolling lock block according to an embodiment of the present invention;

3 is a cross-sectional view of the A-direction structure of FIG. 1;

4 is an assembled and used state diagram of a locking device according to an embodiment of the present invention;

5 is a schematic structural view of the cartridge of FIG. 3;

6 is a perspective structural view of the cartridge of FIG. 5;

7 is a schematic view showing the assembly structure of the self-resetting lock cylinder and the rolling lock block of FIG. 3;

8 is a perspective view showing the assembled structure of the self-resetting lock cylinder and the rolling lock block of FIG. 7;

9 is a schematic perspective view of the self-resetting lock core of FIG. 7;

10 is a schematic structural view of the plug of FIG. 3;

11 is a perspective structural view of the plug of FIG. 10;

[0031] FIG. 12 is a schematic diagram of the insertion locking process of the present invention;

[0032] FIG. 13 is a schematic diagram of the unlocking and unplugging process of the present invention.

[0033] In the figure: 1, the box; 2, the plug; 3, self-resetting the lock core; 4, the rolling lock block; 5, the inverted taper lock hole; 6, the receiving through hole; 7, the first locking portion 8, the first guiding portion; 9, the mounting portion; 10, the guiding through hole; 11, the inclined top; 12, the second locking portion; 13, the second guiding portion; 14, the self-resetting mechanism; 15, adjusting the inclined surface; 16. Guide rod; 17, compression spring; 18, limit protrusion; 19, auxiliary unlocking slope; 20, auxiliary unlock 21; insert guide bevel; 22, auxiliary plug protrusion; 23, front bump; 24, first table; 25

The second countertop.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. FIG. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0035] Please refer to FIG. 1 to FIG. 13 together to explain the locking device provided by the present invention. The locking device comprises a plug-in box 1, a plug 2, a self-resetting lock cylinder 3 and at least one rolling lock block 4, and the self-resetting lock cylinder 3 and the plug are slidably connected in the direction of the central axis of the plug 2, and the plug box 1 is provided There is a reverse taper lock hole 5 for accommodating the plug 2 and the self-resetting lock cylinder 3, and a self-resetting lock core 3 is provided with a lateral through-hole receiving through hole 6, and the rolling lock block 4 is disposed in the receiving through hole 6 The self-resetting lock cylinder 3 and the plug 2 are provided with an interlocking lock block guiding mechanism, so that the rolling lock block 4 can follow the sliding direction of the self-resetting lock cylinder 3 along the central axis direction of the plug 2 and the radial direction of the plug 2. Direction scrolling. In general, the width of the mouth of the inverted taper keyhole 5 coincides with the width of the plug 2 and the self-resetting lock cylinder 3 in the locked state, so that the plug 2 and the self-resetting lock cylinder 3 can just be inserted into the inverted taper keyhole. In the insertion locking state, the rolling lock block 4 is guided by the locking block guiding mechanism to protrude from the side wall of the self-resetting lock cylinder 3, and can catch the nip of the inverted tapered locking hole 5.

[0036] The locking device provided by the present invention provides a lock block guiding mechanism between the plug 2 and the self-resetting lock cylinder 3, and is inserted through the sliding fit of the plug 2 and the self-resetting lock cylinder 3, compared with the prior art. Or pull out the cymbal, cooperate with the inverted taper keyhole 5, so that the rolling lock block 4 has two components parallel to the axial direction of the plug 2 and perpendicular to the axial direction of the plug 2 during sliding, so that the rolling lock block 4 can be made The self-resetting lock cylinder 3 is retracted or retracted into the self-reset lock cylinder 3, thereby achieving the purpose of controlling the locking state of the locking device by the relative sliding of the control plug 2 and the self-resetting lock cylinder 3, in the main locking structure. The snap-on structure, elastomer material or magnetic adsorption structure is not used, which makes the insertion and removal process convenient, the locking force is high, and no interference is caused to the electronic product.

[0037] Further, please refer to FIG. 3 to FIG. 13 together. As a specific implementation manner of the locking device provided by the present invention, the lock block guiding mechanism is a set of inclined pitch mechanism. The guiding is performed by a set of inclined planes which can be away from or close to each other, so that the rolling lock block can perform the above-mentioned movements having two components parallel to the axial direction of the plug 2 and perpendicular to the axial direction of the plug 2 without the need of connecting the spring structure. Lock block The guide mechanism has a longer service life and a more stable performance.

[0038] Further, please refer to FIG. 1 to FIG. 4 and FIG. 10 to FIG. 11 as a specific embodiment of the locking device provided by the present invention, in order to realize the structure of the above-mentioned inclined surface group with adjustable spacing, The plug includes a first locking portion 7, a first guiding portion 8 and a mounting portion 9. The front end of the first guiding portion 8 is connected to the first locking portion 7, and the rear end is connected to the mounting portion 9. The first guiding portion 8 is provided in the middle. There is a guide through hole 10 parallel to the central axis of the first guiding portion 8, and a lower portion of the first locking portion 7 is provided with a slanting top 11 inclined to one side, and the slanting top 11 is located above the guiding through hole 10. The guiding through hole 10 is used for guiding the moving direction of the self-resetting lock cylinder 3, and has the advantages of simple processing, low cost, accurate guiding, and is suitable for use in various sizes of environments. The inclined surface of the inclined roof 11 is the first inclined surface of the above-described inclined surface group structure having an adjustable pitch.

Further, a plurality of mounting holes are provided in the mounting portion 9 for mounting and fixing with the first table 24 located at the outermost side.

[0040] Further, referring to FIG. 3 to FIG. 4 and FIG. 7 to FIG. 9 , as a specific implementation manner of the locking device provided by the present invention, the self-resetting lock cylinder 3 is matched with the structure of the plug 2 . The second locking portion 12, the second guiding portion 13 and the self-resetting mechanism 14 are included. The front end of the second guiding portion 13 is connected to the second locking portion 12, and the rear end is connected to the self-resetting mechanism 14, and the second guiding portion is connected. 13 is matched with the shape of the guiding through hole 1 and disposed in the guiding through hole 10, and the second locking portion 12 is provided with an adjusting inclined surface 15 matched with the inclined surface of the inclined roof 11, and the receiving through hole 6 is provided. On the second locking portion 12. In the embodiment, the plug 2 is fitted to the outside of the second guiding portion 13 through the guiding through hole 10, and the adjusting inclined surface 15 is located directly below the inclined surface of the inclined top 11, and the second guiding portion 13 can be stabilized inside the guiding through hole 10. Sliding in the direction of the central axis of the guiding through hole 10, without shaking, so that the adjusting inclined surface 15 can accurately approach the inclined surface of the inclined top 11 along the straight line, and when the two inclined surfaces are away from each other, the unlocking state is in an unlocked state, when the two inclined surfaces are mutually Close to 吋, in a locked state. The self-resetting lock cylinder 3 can also provide a continuous locking force for the locked state, that is, the state in which the two inclined surfaces are close to each other in the free state, thereby maintaining the locked state, so that the locking device of the present invention has stable performance. The locking force is high, and it is not easy to loosen. Moreover, the overall size of the device is small, and the fixed side only needs to expose the lock head, and the appearance is more beautiful.

[0041] Further, referring to FIG. 2 to FIG. 4 and FIG. 7 to FIG. 9, as a specific implementation manner of the locking device provided by the present invention, in order to realize the rolling activity of the rolling lock block 4, the rolling motion is limited to And always along an axis, so that the locking process is easy to control, and the locking contact area of the locking jaw is large, rolling The lock block 4 is provided as a needle roller. In the same manner, the receiving through hole 6 is a trumpet-shaped strip-shaped through hole, the long axis of which is perpendicular to the central axis of the second guiding portion 13, the inner side opening of the receiving through hole 6 is located on the adjusting inclined surface 15, and the outer side opening is located at the same On the outer side wall of the second locking portion 12, the outer diameter of the rolling lock block 4 is smaller than the width of the inner side opening and larger than the width of the outer side opening. After adjusting the inclined surface 15 away from the inclined top 11吋, the needle roller can slide down through the guiding of the horn hole, and retracts from the inside of the self-resetting lock cylinder 3, so that the insertion or extraction process can be realized. After the adjusting bevel 15 is close to the inclined top 11吋, the needle can be raised by the guiding force of the horn by the pushing force of the slanting hole 11, and is caught at the outer sill, and a part protrudes from the outer wall of the second locking part 12. , the use of the nip of the inverted tapered keyhole 5 is achieved, but the needle does not come out of the second locking portion 12, and the performance is more stable.

[0042] Further, as a specific implementation manner of the locking device provided by the present invention, the strength of the assembly and the stability of use are ensured, and the rolling lock block 4 corresponds to the receiving through hole 6 to avoid multiple rolling. The movement of the lock block 4 in the same receiving through hole is disordered, affecting the unlocking or locking process, and further reducing the processing difficulty of the receiving through hole 6.

[0043] Further, referring to FIG. 1 to FIG. 4 and FIG. 7 to FIG. 9 , as one embodiment of the locking device provided by the present invention, the self-resetting mechanism 14 includes a guiding rod 16 and is disposed on the guiding rod 16 . The outer peripheral compression spring 17 and the limiting protrusion 18 disposed at the front end of the guiding rod 16 , the front end of the limiting protrusion 18 is connected with the rear end of the second guiding portion 13 , and the front end of the compression spring 17 can be coupled with the limiting protrusion 18 The rear end surface abuts, and the front end surface of the limiting projection 18 can abut against the rear end surface of the mounting portion 9. The rear end of the compression spring 17 abuts against the second mesa 25 located on the inner side, and the second mesa 25 is provided with a through hole or a groove-like structure capable of accommodating the passage of the guide rod 16, thereby realizing the whole of the self-resetting lock cylinder 3 Movement in the direction of its axis. In the free state, the compression spring 17 can continue to tighten the self-resetting cylinder 3, thereby keeping it locked.

[0044] Further, referring to FIG. 1 to FIG. 4 and FIG. 7 to FIG. 9 , as one specific embodiment of the locking device provided by the present invention, one side of the limiting protrusion 18 is further provided with an auxiliary unlocking slope 19 . After unlocking, an external force is required to move the self-resetting lock cylinder 3 rearward, so that the inclined top 11 and the adjusting inclined surface 15 are away from each other. Therefore, the auxiliary unlocking inclined surface 19 can provide a relatively convenient force applying platform for facilitating the unlocking process. operating.

[0045] Further, referring to FIG. 4, as a specific implementation manner of the locking device provided by the present invention, in order to further facilitate the unlocking operation, an auxiliary unlocking arm 20 that cooperates with the auxiliary unlocking ramp 19 is further included. The auxiliary unlocking arm 20 is mounted between the first table top 24 and the second table top 25, wherein the shaft and the central axis of the guiding rod 16 are perpendicular to each other, and the auxiliary unlocking arm 20 is adjusted to move along the axial direction thereof so as to contact the auxiliary unlocking oblique The surface 19 is pressed and the self-resetting lock cylinder 3 is moved back as a whole.

[0046] Preferably, the end of the auxiliary unlocking arm 20 that is in contact with the auxiliary unlocking ramp 19 is provided with an auxiliary reinforcing bevel that matches the inclination of the auxiliary unlocking ramp 19, which can make the adjustment process of the auxiliary unlocking arm 20 more labor-saving and more efficient in mediation. high.

[0047] Further, the auxiliary unlocking arm 20 can be adjusted by a manual device. When the unlocking is required, the human hand needs to press and hold the control end connected to the auxiliary unlocking arm 20; or can be adjusted by an automatic device, when the need to unlock the hand, the hand is required. Only by triggering its control end, the automatic control device can continuously push the auxiliary unlocking arm 20, and the regulation efficiency is higher.

[0048] Further, referring to FIG. 3 to FIG. 6 , as a specific implementation manner of the locking device provided by the present invention, in order to further facilitate the insertion of the plug 2 and the self-resetting lock cylinder 3, the reverse tapered locking hole 5 is An insertion guide bevel 21 is also provided at the cornice, which is capable of preliminary guiding the inserted object.

[0049] Further, referring to FIG. 5, as a specific embodiment of the locking device provided by the present invention, in order to further improve the locking force and simplify the machining process, the side wall inclination angle β of the inverted taper keyhole 5 It is 5°-10°.

[0050] Further, referring to FIG. 3 to FIG. 6 and FIG. 10 to FIG. 11 , as a specific implementation manner of the locking device provided by the present invention, the front end of the first locking portion 7 is provided to cover the second lock. The auxiliary insertion protrusion 22 of the front end surface of the tight portion 12 has a front end surface of the auxiliary insertion protrusion 22 which is a circular surface. Since the second locking portion 12 of the front portion of the self-resetting lock cylinder 3 is thin and has a receiving through hole, the insertion 吋 directly contacts the insertion box 1 and is easily damaged by the auxiliary insertion protrusion 22 The cladding, the front end of the self-resetting lock cylinder 3 can be better protected. The circular front end face of the auxiliary insertion boss 22 can be further engaged with the insertion guide slope 21 to improve the efficiency of the insertion alignment, thereby making the insertion process more convenient.

[0051] Further, as a specific embodiment of the locking device provided by the present invention, the angle α between the inclined surface of the inclined roof 11 and the inner wall of the guiding through hole 10 (ie, the inclined angle of the inclined top 11) is 15°- 35°. This angle can ensure the guiding effect of the bevel, thereby ensuring smooth unlocking and locking process, and also enables the self-resetting lock cylinder 3 and the plug 2 to be designed to be lighter and thinner, occupying a smaller space, and the overall device is more beautiful.

[0052] Further, the insertion box 1 is provided with a corresponding connection fixing structure, which is convenient for connection with the locked member, and can also be directly disposed on the locked member.

[0053] Further, as described above, the connecting portion that cooperates with the plug 2 and the self-resetting lock cylinder 3 requires two mounting mesas, that is, the first mesa 24 of the outer layer, for fixing the plug 2, and the inner layer Two countertops 25 for compression springs 17 provides a force applying plane and can accommodate the reciprocating motion of the guide rod 16.

[0054] Insert the locking process, see Figure 12:

[0055] In this embodiment, when the connection port is required, the plug 2 is fixed to the side, the inverted taper lock hole 5 and the connected locked member are moved downward, and the plug 2 is initially inserted into the inverted taper lock hole 5. The needle in the plug 2 first comes into contact with the insertion guide slope 21 of the inverted cone lock hole 5, since the mouth of the inverted cone lock hole 5 is smaller than the total of the plug 2, the self-resetting lock cylinder 3 and the exposed portion of the needle roller. The width, the plug 2, the self-resetting lock cylinder 3 and the needle roller cannot pass; under the action of the insertion of the guide inclined surface 21, the needle roller drives the self-resetting lock cylinder 3 downward to move the compression spring 17 at the bottom of the compression, and adjusts the slope 15 to start Keep away from the inclined top 21; the same needle roller that moves downward from the reset lock cylinder 3 moves along the oblique direction of the receiving through hole 6 to the lower left; when moved to a certain position, the needle is completely located inside the self-resetting lock cylinder 3, the plug 2 And the self-resetting lock cylinder 3 can continue to be inserted into the inverted taper keyhole 5, and the adjusting inclined surface 15 starts to approach the inclined top 21; since the small inner portion of the inner cavity of the cavity is large, the inverted tapered keyhole 5 moves downward, The needle is moved to the right along the side wall of the cavity until the plug 2 is inserted into the defined position to complete the insertion operation.

[0056] In the connected state, since the side wall of the inverted cone locking hole 5 has a certain angle with the outer wall of the plug 2 and the self-resetting lock cylinder 3, the insertion box 1 拔 is pulled upward, and the needle roller is inverted. The inner cavity of the taper keyhole 5 is tighter and tighter, and the locking function is realized. After the locking, if there is no external force to push the auxiliary unlocking ramp 19, the cartridge 1 and the plug 2 are not separated, and the locking force is reliable.

[0057] Unlock the extraction process, see Figure 13:

[0058] In this embodiment, when the unlocking of the cymbal is required, the insertion box 1 is slightly moved downward, and the needle roller moves downward and rightward along the hole of the inverted cone locking hole 5 to be separated from the inclined surface of the plug 2, and then the auxiliary unlocking is adjusted. The arm 20 is pressed to assist the unlocking of the inclined surface 19, the self-resetting lock cylinder 3 is moved downward, the adjusting inclined surface 15 starts to move away from the inclined top 21, and the needle roller moves downwardly to the left along the cavity of the inverted tapered locking hole 5, further with the plug 2 The inclined surface is separated and retracted toward the interior of the self-resetting lock cylinder 3; then, the insertion box 1 is pulled upward, and the needle roller moves to the left under the action of the side wall of the cavity, and when the needle roller finishes entering the self-resetting lock cylinder 3, the inverted cone The keyhole 5 can be smoothly pulled out from the plug 2 to complete the unlocking action.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Within the scope of protection of the invention.

Claims

Claim

[Claim 1] A locking device, comprising: a cassette, a plug, a self-resetting lock cylinder, and at least one rolling lock block, wherein the self-resetting lock cylinder and the plug slide in a direction of a central axis of the plug Connecting, the insertion box is provided with a reverse tapered locking hole for accommodating the plug and the self-resetting lock cylinder, and the self-resetting lock core is provided with a receiving opening of the lateral opening, a rolling lock block is disposed in the receiving through hole, and a self-resetting lock block guiding mechanism is disposed between the self-resetting lock cylinder and the plug, so that the rolling lock block can follow the self-resetting lock cylinder Sliding in the direction of the central axis of the plug and the radial direction of the plug, the slide lock block protrudes from the side wall of the self-resetting lock cylinder and can be stuck in the inserted locking state The mouth of the inverted tapered keyhole.

[Claim 2] The locking device according to claim 1, wherein: the lock block guiding mechanism is a set of adjustable pitch bevel mechanisms.

[Claim 3] The locking device according to claim 2, wherein: the plug includes a first locking portion, a first guiding portion, and a mounting portion, and a front end of the first guiding portion and the first portion a locking portion is connected, a rear end is connected to the mounting portion, a middle of the first guiding portion is provided with a guiding through hole parallel to the central axis of the first guiding portion, and a lower portion of the first locking portion is provided with a direction a sloping sloping roof on one side, the slanting top being located above the guiding through hole.

[Claim 4] The locking device according to claim 3, wherein: the mounting portion is provided with a plurality of mounting holes.

[Claim 5] The locking device according to claim 3, wherein: the self-resetting lock cylinder includes a second locking portion, a second guiding portion, and a self-resetting mechanism, and a front end of the second guiding portion Connected to the second locking portion, the rear end is connected to the self-resetting mechanism, the second guiding portion is adapted to the shape of the guiding through hole, and is disposed in the guiding through hole, One side of the second locking portion is provided with an adjusting inclined surface that cooperates with the inclined surface of the inclined top, and the receiving through hole is disposed on the second locking portion.

[Claim 6] The locking device according to claim 5, wherein: the rolling lock block is a needle roller, and the receiving through hole is a horn-shaped strip-shaped through hole, the long axis of which is perpendicular to the a central axis of the second guiding portion, the inner side opening of the receiving through hole is located on the adjusting inclined surface, and the outer side opening is located at the On the outer side wall of the second locking portion, the outer diameter of the rolling lock block is smaller than the width of the inner side opening and larger than the width of the outer side opening.

[Claim 7] The locking device according to claim 6, wherein: the rolling lock block has a one-to-one correspondence with the receiving through holes.

[Claim 8] The locking device according to claim 5, wherein: the self-resetting mechanism includes a guide rod, a compression spring disposed on an outer circumference of the guide rod, and a limit provided at a front end of the guide rod a front end of the limiting protrusion is connected to a rear end of the second guiding portion, and a front end of the pressing spring can abut the rear end surface of the limiting protrusion, the limiting protrusion The front end surface can abut against the rear end surface of the mounting portion.

[Claim 9] The locking device according to claim 8, wherein: one side of the limiting protrusion is further provided with an auxiliary unlocking slope.

[Claim 10] The locking device of claim 9, further comprising an auxiliary unlocking arm that cooperates with the auxiliary unlocking ramp.

[Claim 11] The locking device according to claim 10, wherein: the end of the auxiliary unlocking arm that is in contact with the auxiliary unlocking ramp is provided with an auxiliary reinforcement that matches the inclination of the auxiliary unlocking ramp Beveled.

[Claim 12] The locking device according to claim 3, wherein: the opening of the inverted tapered locking hole is further provided with an insertion guiding slope.

[Claim 13] The locking device according to claim 12, wherein: the side wall of the inverted tapered keyhole has an inclination angle β of 5° to 10°.

[Claim 14] The locking device according to claim 12, wherein: the front end of the first locking portion is provided with an auxiliary insertion protrusion that can cover the front end surface of the second locking portion. The front end surface of the auxiliary insertion protrusion is a circular surface.

[Claim 15] The locking device according to claim 3, wherein an angle α between the inclined surface of the inclined top and the inner wall of the guide through hole is 15°-35°.