CN112854905A

CN112854905A - Anti-theft lock

Info

Publication number: CN112854905A
Application number: CN202110290520.0A
Authority: CN
Inventors: 王妙玉; 夏亮; 邓建平
Original assignee: Guangdong Hotata Smart Home Co Ltd
Current assignee: Guangdong Hotata Smart Home Co Ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-05-28

Abstract

The invention relates to the technical field of locks, and provides an anti-theft lock which comprises: the handle is arranged on the pivot and provided with a concave cavity which is formed by sinking towards the radial direction of the pivot, and the sliding piece is arranged in the sliding groove in a sliding mode and is used for being clamped in/slid out of the concave cavity; the shell is provided with a strip-shaped hole parallel to the sliding groove, and the sliding piece is provided with a shifting portion penetrating through the strip-shaped hole. When a user needs to lock the handle, the rotating part can be prevented from rotating only by poking the sliding part through the poking part to slide so that the sliding part is clamped in the concave cavity, and therefore the pivot on the handle is prevented from rotating; when a user needs to unlock the handle, the rotating part can be unlocked to rotate only by shifting the sliding part to slide through the shifting part so that the sliding part slides out of the concave cavity, and therefore the pivot rotation on the handle is unlocked; the safety is guaranteed.

Description

Anti-theft lock

Technical Field

The invention belongs to the technical field of locks, and particularly relates to an anti-theft lock.

Background

In modern buildings, security doors are widely used, and in order to facilitate observation, the security doors are usually provided with cat eyes. However, a lawbreaker can easily pull the door handle on the inner side of the door through the cat eye with a tool, and once the door handle is pulled, the door can be easily opened, so that the safety of a user is seriously influenced.

Disclosure of Invention

The invention aims to provide an anti-theft lockset to solve the technical problem that a door handle is easy to pull and then open in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: provided is an antitheft lock including: the handle is arranged on the pivot and provided with a concave cavity which is formed by sinking towards the radial direction of the pivot, and the sliding piece is arranged in the sliding groove in a sliding mode and is used for being clamped in/slid out of the concave cavity; the shell is provided with a strip-shaped hole parallel to the sliding groove, and the sliding piece is provided with a shifting portion penetrating through the strip-shaped hole.

Further, the cavity comprises a first concave part and a second concave part which are communicated, and the sliding piece is provided with a first convex part which is inserted into the first concave part and a second convex part which is inserted into the second concave part.

Further, the first protruding portion is bent, and/or the second protruding portion is bent.

Further, the inner wall of the first recess and the inner wall of the second recess are connected to form a W shape.

Further, the first concave portion, the second concave portion, the first convex portion, and the second convex portion are respectively plural; the first concave parts, the second concave parts, the first convex parts and the second convex parts are in one-to-one correspondence.

Furthermore, an elastic body for driving the sliding piece to be close to the rotating piece is connected between the sliding piece and the shell.

Furthermore, a positioning piece is arranged on the shell, a positioning notch is formed in the edge of the sliding piece, and when the first protruding portion is clamped in the first recessed portion, the positioning piece is clamped in the positioning notch.

Further, the positioning notch is located between the first boss and the second boss.

Furthermore, a clamping groove extending along the extending direction of the pivot is formed in the pivot, and a boss clamped in the clamping groove is arranged on the rotating piece.

Furthermore, a guide hole parallel to the sliding groove is formed in the sliding part, and a guide piece inserted in the guide hole is arranged on the shell.

The anti-theft lock provided by the invention has the beneficial effects that: compared with the prior art, according to the anti-theft lock provided by the invention, a user drives the pivot shaft to rotate through the handle, the pivot shaft is provided with the rotating part, and the rotating part is driven to rotate by the rotation of the pivot shaft; the rotating piece is provided with a concave cavity which is sunken towards the radial direction of the pivot; the shell is provided with a sliding chute, and the sliding part is arranged in the sliding chute in a sliding manner; when a user needs to lock the handle, the rotating part can be prevented from rotating only by poking the sliding part through the poking part to slide so that the sliding part is clamped in the concave cavity, and therefore the pivot on the handle is prevented from rotating; when a user needs to unlock the handle, the rotating part can be unlocked to rotate only by shifting the sliding part to slide through the shifting part so that the sliding part slides out of the concave cavity, and therefore the pivot rotation on the handle is unlocked; the safety is guaranteed.

Drawings

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

FIG. 1 is a schematic view of a mounting of a toggle portion according to an embodiment of the present invention;

FIG. 2 is a schematic view of a slider assembly according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a sliding member according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a reversible lock according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a sleeve portion according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of an assembly of a sleeve portion and a pivot according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of an assembled sleeve and return spring according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a return spring in a first position according to an embodiment of the present invention;

FIG. 9 is a perspective view of a rotor according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of a return spring according to an embodiment of the present invention;

FIG. 11 is a schematic perspective view of a return spring in a second position according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a return spring in a first position according to an embodiment of the present invention;

fig. 13 is a schematic diagram of the return spring in the second position according to the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a shell; 11-a sleeve portion; 12-a first stop; 13-a second stop; 14-a chute; 15-strip shaped holes; 21-a handle; 22-a pivot; 221-card slot; 23-a rotating member; 231-a first pushing part; 232-a second pushing part; 233-boss; 241-a cavity; 2411-a first recess; 2412-a second recess; 25-a screw cap; 3-a return spring; 31-a first end; 32-a second end; 4-a slide; 41-a toggle part; 42-a first boss; 43-a second boss; 44-positioning notches; 45-a positioning member; 46-a pilot hole; 47-a guide; 5-an elastomer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

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

Referring to fig. 1 to 5, the anti-theft lock according to the present invention will now be described. The anti-theft lock includes: a casing 1 having a slide groove 14, a handle 21 pivotally connected to the casing 1 through a pivot 22, a rotation member 23 provided on the pivot 22 and having a cavity 241 formed by being depressed in a radial direction of the pivot 22, and a slider 4 slidably provided in the slide groove 14 and adapted to be caught/slipped into/out of the cavity 241; the casing 1 is provided with a strip-shaped hole 15 parallel to the sliding chute 14, and the sliding part 4 is provided with a toggle part 41 penetrating through the strip-shaped hole 15.

Thus, a user drives the pivot 22 to rotate through the handle 21, the pivot 22 is provided with the rotating part 23, and the rotating part 23 is driven to rotate by the rotation of the pivot 22; the rotating member 23 is provided with a cavity 241, and the cavity 241 is recessed toward the radial direction of the pivot 22 (in one embodiment, the cavity 241 is recessed toward the radial direction of the pivot 22 and the direction close to the axis); the shell 1 is provided with a sliding chute 14, and the sliding piece 4 is arranged in the sliding chute 14 in a sliding manner; when a user needs to lock the handle 21, the rotating member 23 can be prevented from rotating only by dialing the sliding member 4 through the dialing part 41 to slide so that the sliding member 4 is clamped in the concave cavity 241, thereby preventing the pivot 22 on the handle 21 from rotating; when a user needs to unlock the handle 21, the rotating member 23 can be unlocked to rotate only by dialing the sliding member 4 through the dialing part 41 to slide so that the sliding member 4 slides out of the concave cavity 241, thereby unlocking the rotation of the pivot 22 on the handle 21; the safety is guaranteed.

In one embodiment, the toggle portion 41 is rod-shaped. In one embodiment, the width of the strip-shaped hole 15 is the same as the diameter of the dial 41.

Further, referring to fig. 1 to 5, as an embodiment of the anti-theft lock according to the present invention, the cavity 241 includes a first recess 2411 and a second recess 2412 that are communicated with each other, and the slider 4 has a first protrusion 42 inserted into the first recess 2411 and a second protrusion 43 inserted into the second recess 2412. Thus, the first protrusion 42 is engaged with the first recess 2411, the second protrusion 43 is engaged with the second recess 2412, and the first protrusion 42 and the second protrusion 43 are provided together to lift the brake on the rotating member 23.

Further, referring to fig. 1 to 5, as an embodiment of the anti-theft lock according to the present invention, the first protrusion 42 is bent, and/or the second protrusion 43 is bent. In this way, the first bent boss 42 can reinforce the strength of the first boss 42, and the second bent boss 43 can reinforce the strength of the second boss 43.

Further, referring to fig. 1 to 5, as a specific embodiment of the anti-theft lock according to the present invention, an inner wall of the first recess 2411 and an inner wall of the second recess 2412 are connected to form a W shape. Thus, the processing is easy, and the W-shaped structure can improve the deformation resistance.

Further, referring to fig. 1 to 5, as a specific embodiment of the anti-theft lock according to the present invention, a plurality of first concave portions 2411, a plurality of second concave portions 2412, a plurality of first convex portions 42, and a plurality of second convex portions 43 are provided; the first concave portions 2411, the second concave portions 2412, the first convex portions 42, and the second convex portions 43 correspond to each other one by one. In this way, the first concave portions 2411, the second concave portions 2412, the first convex portions 42, and the second convex portions 43 cooperate with each other to position the rotating member 23 at different rotating angles.

Further, referring to fig. 1 to 5, as an embodiment of the anti-theft lock according to the present invention, an elastic body 5 for driving the sliding member 4 to approach the rotating member 23 is connected between the sliding member 4 and the housing 1. In this way, the elastic body 5 can drive the sliding member 4 to approach the rotating member 23 and to be stuck in the concave cavity 241 to brake the rotating member 23.

Specifically, in one embodiment, the elastic body 5 is a torsion spring. Specifically, in one embodiment, the elastic body 5 is a butterfly-type torsion spring.

Further, referring to fig. 1 to 5, as a specific embodiment of the anti-theft lock according to the present invention, a positioning element 45 is disposed on the housing 1, and a positioning notch 44 is disposed on an edge of the sliding element 4, wherein when the first protruding portion 42 is locked in the first recessed portion 2411, the positioning element 45 is locked in the positioning notch 44. Thus, when the first protruding portion 42 is engaged with the first recess 2411, the positioning element 45 on the housing 1 is engaged with the positioning notch 44 on the sliding element 4, so as to reduce the shaking of the sliding element 4.

Further, referring to fig. 1 to fig. 5, as an embodiment of the anti-theft lock according to the present invention, a positioning notch 44 is located between the first protruding portion 42 and the second protruding portion 43. In this way, the first and

second protrusions

42 and 43 on the first and

second protrusions

42 and 43 can protect the positioning notch 44 between the first and

second protrusions

42 and 43; and the positioning notch 44 can transmit force to the first and

second protrusions

42 and 43 when being subjected to external force.

Further, referring to fig. 1 to 5, as a specific embodiment of the anti-theft lock according to the present invention, a slot 221 extending along the extending direction of the pivot 22 is disposed on the pivot 22, and a boss 233 clamped in the slot 221 is disposed on the rotating member 23. Thus, the boss 233 of the rotating member 23 is locked in the locking slot 221 to prevent the rotating member 23 from rotating relative to the pivot 22.

Further, referring to fig. 1 to 5, as a specific embodiment of the anti-theft lock according to the present invention, a guide hole 46 parallel to the sliding groove 14 is formed on the sliding member 4, and a guide element 47 inserted in the guide hole 46 is disposed on the housing 1. In this way, the guide piece 47 inserted in the guide hole 46 can play a guiding role during the sliding process of the sliding piece 4; and the guide 47 can reduce the vibration/shaking of the slider 4 occurring during the sliding.

Referring to fig. 1 to 10, in one embodiment, the anti-theft lock further includes: a housing 1, a handle 21 pivotally connected to the housing 1 via a pivot 22, a rotating member 23 disposed on the pivot 22, a first pushing part 231 disposed on the rotating member 23 and rotatable with the rotating member 23 about the pivot 22, and an elastic member; the housing 1 has a first position and a second position for placing the elastic members thereon, respectively, and the first position and the second position are located on a moving path of the first pushing part 231, respectively.

Thus, the handle 21 drives the pivot 22 to rotate, the pivot 22 drives the rotating part 23 to rotate, and the rotating part 23 drives the first pushing part 231 to rotate around the pivot 22; when the elastic member is located at the first position and the first pushing portion 231 contacts with the elastic member at the first position (assuming that the handle 21 is located at the first working position), after the user rotates the handle 21 to deform the elastic member at the first position, if the user releases the handle 21, the handle 21 is pushed by the first pushing portion 231 to reset during the process of restoring the elastic member; when the elastic member is moved from the first position to the second position and the first pushing portion 231 contacts with the elastic member at the second position (assuming that the handle 21 is located at the second working position), after the user rotates the handle 21 to deform the elastic member at the second position, if the user releases the handle 21, the handle 21 is pushed to be reset by the first pushing portion 231 during the process of restoring the elastic member; namely, the handle 21 can be used in the first working position or the second working position by adjusting the elastic element in the first position and the second position, and the adjustment is very convenient.

In one embodiment, the housing 1 is a metal/plastic shell.

In one embodiment, the rotating member 23 is a metal plate.

In one embodiment, the handle 21 is rotated by a different angle relative to the housing 1 when the handle 21 is in the first or second operating position.

Further, referring to fig. 1 to 10, in one embodiment, the elastic element is a cylindrical return spring 3; the housing 1 has a sleeve portion 11 fitted over a pivot 22; the return spring 3 is sleeved on the sleeve part 11; the return spring 3 is switchable between a first position and a second position around the sleeve portion 11; the two ends of the return spring 3 are respectively a first end 31 and a second end 32; the housing 1 on two opposite sides of the sleeve portion 11 is provided with a first stopper 12 and a second stopper 13; the second stop member 13 is detachably fixed to the housing 1; the first end 31 is located on a rotation path of the first push portion 231; when the return spring 3 rotates to the first position, the first end 31 of the return spring 3 abuts against the first stop member 12, and the second end 32 of the return spring 3 abuts against the second stop member 13; in the rotation direction of the return spring 3, the first stopper 12, the second stopper 13, and the first pushing portion 231 are respectively located in the same section between the first end 31 and the second end 32; when the return spring 3 rotates to the second position, the first end 31 of the return spring 3 abuts on the second stopper 13, and the second end 32 of the return spring 3 abuts on the first stopper 12; in the rotation direction of the return spring 3, the first stopper 12, the second stopper 13, and the first pushing portion 231 are respectively located in the same section between the first end 31 and the second end 32.

Thus, (1) the handle 21 is pivoted on the housing 1 through the pivot 22, the sleeve part 11 on the housing 1 is sleeved on the outer side of the pivot 22, the return spring 3 is sleeved on the sleeve part 11, the return spring 3 can rotate around the sleeve part 11, the sleeve part 11 separates the pivot 22 and the return spring 3, and the mutual interference between the return spring 3 and the pivot 22 is avoided; (2) the return spring 3 is switchable around the sleeve portion 11 between a first position and a second position; when the handle 21 rotates, the pivot 22 is driven to rotate, the pivot 22 rotates to drive the rotating part 23 to rotate, and the rotating part 23 rotates to drive the first pushing part 231 on the rotating part 23 to rotate around the pivot 22; since the first end 31 is located on the rotation path of the first push portion 231, the first push portion 231 may contact the first end 31 of the return spring 3 and push the return spring 3 to rotate about the pivot 22 when rotating about the pivot 22; (3) when the return spring 3 is located at the first position (assuming that the handle 21 is rotated at the first operating position), the first end 31 of the return spring 3 abuts against the first stopper 12, and the second end 32 of the return spring 3 abuts against the second stopper 13, so that the state of the return spring 3 can be kept stable; (4) the process of turning and resetting the handle 21 in the first working position is as follows: when the user rotates the handle 21, the first pushing part 231 rotates around the pivot 22 and pushes the first end 31 to approach the second end 32, the potential energy of the return spring 3 increases; the user releases the handle 21, the first end 31 of the return spring 3 pushes the handle 21 to return by the first pushing portion 231 (the handle 21 stops rotating when the first end 31 abuts on the first stopper 12) (5) when the user removes the second stopper 13, the user drives the first pushing portion 231 to rotate around the pivot 22 through the handle 21 and pushes the return spring 3 to rotate through the first end 31, the second end 32 originally abutted against the second stop member 13 can cross the installation position of the second stop member 13 and then rotate towards the first stop member 12 until the return spring 3 rotates to the second position (assuming that the handle 21 rotates to the second working position at the moment), then the second stop member 13 is installed, the first end 31 of the return spring 3 is abutted against the second stop member 13, the second end 32 of the return spring 3 is abutted against the first stop member 12, and the state of the return spring 3 can be kept stable; (6) the process of turning and resetting the handle 21 in the second working position is as follows: at this time, if the user rotates the handle 21 so that the first pushing part 231 rotates about the pivot 22 and pushes the first end 31 to approach the second end 32, the potential energy of the return spring 3 rises; the user releases the handle 21, the first end 31 of the return spring 3 pushes the handle 21 to return by the first pushing portion 231 (when the first end 31 abuts on the second stopper 13, the handle 21 stops rotating); (7) namely, the handle 21 can rotate and reset when being positioned at the first working position, and after the handle 21 is rotated from the first working position to the second working position after the second stop part 13 is detached, the second stop part 13 is installed, so that the function that the handle 21 can rotate and reset when being positioned at the second working position can be realized; the user can set the handle 21 at the first working position or the second working position according to actual conditions.

Specifically, in one embodiment, the first push portion 231 is a protrusion provided on the rotation member 23.

Specifically, in one embodiment, the second pushing portion 232 is a protrusion provided on the rotating member 23.

Further, referring to fig. 1 to 10, in one embodiment, when the first pushing part 231 pushes the return spring 3 to rotate from the first position to the second position, the pivot 22 rotates ninety degrees to one hundred eighty degrees. As such, the state of the handle 21 may be rotated ninety degrees to one hundred eighty degrees when the position of the handle 21 is switched from the first operating position to the second operating position.

Specifically, in one embodiment, the pivot 22 rotates one hundred and eighty degrees when the first push portion 231 pushes the return spring 3 to rotate from the first position to the second position.

Further, referring to fig. 1 to 10, in one embodiment, the return spring 3 is a torsion spring. Thus, the structure is simple. The first and second ends 31 and 32 of the torsion spring are capable of storing/releasing elastic potential energy when relatively rotated about the pivot 22.

Further, referring to fig. 1 to 10, in one embodiment, the pivot 22 is provided with a slot 221 extending along the extending direction of the pivot 22, and the rotating member 23 is provided with a boss 233 clamped in the slot 221; the pivot shaft 22 is fitted with a nut 25, and the rotor 23 is held between the nut 25 and the sleeve portion 11. Thus, the boss 233 on the rotating member 23 is locked in the locking slot 221 to prevent the rotating member 23 from rotating relative to the pivot 22; the nut 25 prevents the rotating member 23 from being disengaged from the pivot shaft 22.

Further, referring to fig. 1 to 10, in an embodiment, the distance between the first pushing portion 231 and the pivot 22 is less than the distance between the first stopper 12 and the pivot 22, and the distance between the first pushing portion 231 and the pivot 22 is less than the distance between the second stopper 13 and the pivot 22. Thus, the first pushing portion 231 is prevented from colliding with the first stopper 12 when rotating around the pivot 22, and the first pushing portion 231 is prevented from colliding with the second stopper 13 when rotating around the pivot 22.

Further, referring to fig. 1 to 10, in one embodiment, the first stop member 12 is a screw threadedly connected with the housing 1, and/or the second stop member 13 is a screw threadedly connected with the housing 1. Thus, it is very convenient to detach the first stopper member 12 and the second stopper member 13.

Further, referring to fig. 1 to 10, in an embodiment, the rotating member 23 further has a second pushing portion 232, and the second end 32 is located on a rotating path of the second pushing portion 232; when the return spring 3 is rotated to the first position, the first stopper 12, the second stopper 13, and the second pushing portion 232 are respectively located in the same section between the first end 31 and the second end 32 in the rotational direction of the return spring 3; when the return spring 3 is rotated to the second position, the first stopper 12, the second stopper 13, and the second pushing portion 232 are located in the same section between the first end 31 and the second end 32, respectively, in the rotational direction of the return spring 3. In this way, after the second stopper 13 is detached and the first pushing portion 231 pushes the return spring 3 to the second position by pushing the first end 31; if the return spring 3 needs to be pushed from the second position to the first position, after the second stop member 13 is detached, the user drives the second pushing portion 232 to rotate around the pivot 22 through the handle 21 and pushes the return spring 3 to rotate through the second end 32, the first end 31 originally abutted against the second stop member 13 can cross the installation position of the second stop member 13 and then rotate towards the first stop member 12 until the return spring 3 rotates to the first position (at this time, the handle 21 rotates to the first working position), the second stop member 13 is installed, the first end 31 of the return spring 3 abuts against the first stop member 12, the second end 32 of the return spring 3 abuts against the second stop member 13, and the state of the return spring 3 can be kept stable; that is, the return spring 3 can be pushed to rotate from the second position to the first position very conveniently by the second stopper 13.

Further, referring to fig. 1 to 10, in one embodiment, the distance from the second pushing portion 232 to the axis of the pivot 22 is smaller than the distance from the first stopper 12 to the axis of the pivot 22, and the distance from the second pushing portion 232 to the axis of the pivot 22 is smaller than the distance from the second stopper 13 to the axis of the pivot 22. Thus, the second pushing portion 232 is prevented from colliding with the first stopper 12 when rotating around the pivot 22, and the second pushing portion 232 is prevented from colliding with the second stopper 13 when rotating around the pivot 22.

Further, referring to fig. 1 to 10, in an embodiment, when the return spring 3 is located at the first position, the first pushing portion 231 abuts against the first end 31, and the second pushing portion 232 abuts against the second end 32. So, first promotion portion 231 and second promotion portion 232 all contact with reset spring 3, and the first promotion portion 231 of being convenient for drives reset spring 3 and rotates, perhaps second promotion portion 232 drives and drives reset spring 3 and rotate.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Theftproof tool to lock, its characterized in that includes: the handle is arranged on the pivot and provided with a concave cavity which is formed by sinking towards the radial direction of the pivot, and the sliding piece is arranged in the sliding groove in a sliding mode and is used for being clamped in/slid out of the concave cavity; the shell is provided with a strip-shaped hole parallel to the sliding groove, and the sliding piece is provided with a shifting portion penetrating through the strip-shaped hole.

2. The anti-theft lock according to claim 1, characterized in that said cavity comprises a first recess and a second recess communicating with each other, said slider having a first protrusion for being inserted in said first recess and a second protrusion for being inserted in said second recess.

3. The anti-theft lock according to claim 2, characterized in that said first projection is bent and/or said second projection is bent.

4. The anti-theft lock according to claim 2, characterized in that the inner wall of said first recess and the inner wall of said second recess are joined to form a W-shape.

5. The anti-theft lock according to claim 1, characterized in that said first recess, said second recess, said first projection, and said second projection are respectively plural; the first concave parts, the second concave parts, the first convex parts and the second convex parts are in one-to-one correspondence.

6. The anti-theft lock according to claim 1, wherein an elastic body for driving the sliding member close to the rotary member is connected between the sliding member and the housing.

7. The anti-theft lock according to claim 2, wherein a positioning member is disposed on the housing, and the edge of the sliding member has a positioning notch, and when the first protruding portion is engaged with the first recessed portion, the positioning member is engaged with the positioning notch.

8. The anti-theft lock according to claim 7, characterized in that said positioning notch is located between said first boss and said second boss.

9. The anti-theft lock according to claim 1, wherein said pivot shaft is provided with a notch extending in the direction in which said pivot shaft extends, and said rotating member is provided with a boss engaged in said notch.

10. The anti-theft lock according to claim 1, characterized in that said sliding member is provided with a guide hole parallel to said sliding groove, and said housing is provided with a guide member inserted in said guide hole.