CN113789997B

CN113789997B - Lock catch and unlocking device

Info

Publication number: CN113789997B
Application number: CN202110951237.8A
Authority: CN
Inventors: 钟晓通
Original assignee: Shanghai Huichang Culture Communication Co ltd
Current assignee: Shanghai Huichang Culture Communication Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-07-19
Anticipated expiration: 2041-08-18
Also published as: CN113789997A

Abstract

The invention provides a lock catch and an unlocking device, which relate to the technical field of theft prevention and solve the problem that an iron ball in a magnetic catch is easy to clamp during unlocking to cause unlocking failure in the prior art, wherein the lock catch comprises a lock catch body and a contact pin in splicing fit with the lock catch body, the lock catch body comprises a lock catch shell, a first spring, an unlocking slide block and a plurality of locking balls, the first spring, the unlocking slide block and the locking balls are sequentially arranged in the lock catch shell, a limiting groove is formed in the contact pin, the contact pin vertically pushes the locking balls open and penetrates into the unlocking slide block and the first spring, and the locking balls are uniformly clamped in the limiting groove; the locking ball is connected with the unlocking slide block through an elastic mechanism, and the elastic mechanism can drive the locking ball to move radially outwards to separate from the limiting groove when the unlocking slide block compresses the first spring. When the lock catch is unlocked, the lock catch can be unlocked effectively and smoothly, and unlocking failure is avoided.

Description

Lock catch and unlocking device

Technical Field

The invention relates to the technical field of theft prevention, in particular to a lock catch and an unlocking device.

Background

With the rapid development of society and economy, some supermarkets, markets and clothing special stores can add magnetic buckles to the clothing of selling, and magnetic buckles can trigger the alarm device who installs at the access & exit to play the theftproof effect.

The existing anti-theft magnetic buckle consists of a lock nail 5, a plastic shell 9 and a lock sleeve, wherein the lock sleeve is a simple device formed by an iron bead, an iron ring and a spring, and the iron bead is normally in a closed state under the thrust of the spring. During locking, as shown in fig. 1, the locking nail 5 is inserted into the lock sleeve 8, the head of the locking nail 5 pushes the iron bead 6 positioned at the end part close to the locking nail channel, extends into the iron ring 11 and the spring 10, and presses the spring 10 through the iron ring 11 until the iron bead 6 sinks into the limiting ring 7 at the middle part of the locking nail main body. At this time, the iron ring 11 presses the iron ball tightly into the stop collar 7 under the pressure of the spring 10, so that the magnetic lock catch cannot be opened easily due to the limit relationship between the iron ball 6 and the stop collar 7. When the lock needs to be unlocked, as shown in fig. 2, only one magnet needs to be placed above the lock sleeve, under the attraction of the magnet, the iron ring 11 moves upwards together with the iron bead 6 after resisting the action of the spring elasticity, and the iron bead 6 is separated from the limiting ring 7, so that the lock nail 5 can be withdrawn from the lock nail channel, and the purpose of unlocking is achieved. However, the iron beads in the existing magnetic buckles are easy to be stuck, so that unlocking failure is caused.

Disclosure of Invention

The invention aims to provide a lock catch and an unlocking device, which aim to solve the problem that an iron bead in a magnetic buckle is easy to clamp during unlocking to cause unlocking failure in the prior art.

The invention provides a lock catch which comprises a lock catch body and a contact pin in plug fit with the lock catch body, wherein the lock catch body comprises a lock catch shell, a first spring, an unlocking slide block and a plurality of locking balls, the first spring, the unlocking slide block and the locking balls are sequentially arranged in the lock catch shell, a limiting groove is formed in the contact pin, the contact pin vertically penetrates through the locking balls and penetrates into the unlocking slide block and the first spring, and the locking balls are respectively limited in the corresponding limiting grooves;

the locking ball is connected with the unlocking sliding block through an elastic mechanism, and the elastic mechanism can drive the locking ball to move radially outwards to be separated from the limiting groove when the unlocking sliding block compresses the first spring.

As a preferable aspect of the present invention, an inner end surface of the lock casing near one end of the locking ball is trapezoidal, and the first spring presses the locking ball through the unlocking slider and abuts against the locking ball on the trapezoidal inner end surface of the lock casing.

As a preferable scheme of the present invention, the elastic mechanism includes a second spring and a rocker arm, an inner cavity is provided in the unlocking slider, the second spring is transversely disposed in the inner cavity, and one end of the second spring is connected to a side wall of the inner cavity, and the other end is connected to one end of the rocker arm, and the other end of the rocker arm extends to an outer side of the unlocking slider and is connected to the locking ball;

when the contact pin is inserted into the lock catch body, the first spring and the second spring are both in a compressed state, and the elastic force of the first spring is greater than that of the second spring.

As a preferable aspect of the present invention, the unlocking slider includes a first magnet and a slider main body, and the first magnet is disposed at one end of the slider main body close to the first spring; the rocker arm is provided with a connecting shaft, a transverse shaft hole is formed in the side wall of the slider body, and the rocker arm is rotatably connected to the unlocking slider through the connecting shaft and the shaft hole.

As a preferable scheme of the present invention, the unlocking slider includes a first slider and a second slider, the first slider and the second slider are both semicircular, chord edges of the semicircular first slider and chord edges of the semicircular second slider are opposite to each other and are connected at both sides by a baffle, a strip-shaped inner cavity is formed between the first slider and the second slider, a through hole for the insertion pin to pass through is formed in the center of the inner cavity, one end of the second spring is connected to the baffle, the other end of the second spring extends in the direction of the through hole and is connected to the rocker, and the rocker extends to the outside of the inner cavity.

As a preferable scheme of the present invention, the latch body further includes an outer housing, an outer convex structure is disposed on the outer housing, and the latch housing is disposed in the outer convex structure.

The invention also provides an unlocking device, which is matched with the lock catch and used for taking the contact pin out of the lock catch body, and comprises a support main body, a base, a second magnet and a shelling mechanism, wherein the support main body is arranged on the base and surrounds the base to form an unlocking cavity with an upward opening, the convex structure of the lock catch body is matched with the unlocking cavity, the second magnet is arranged on the base at the bottom of the unlocking cavity, and the shelling mechanism is arranged on the support main body and protrudes into the unlocking cavity.

As a preferable aspect of the present invention, the hulling mechanism includes a third spring and a hulling wheel set, the supporting body is provided with a transverse adjusting cavity, the third spring is transversely disposed in the adjusting cavity, one end of the third spring is connected to the supporting body, the other end of the third spring is connected to the hulling wheel set, and a part of the hulling wheel set extends into the unlocking cavity.

As a preferable aspect of the present invention, the shelling wheel set includes a single wheel, a torsion spring, and a wheel seat, the wheel seat is connected to the third spring, two ends of the wheel seat are respectively connected to the single wheel through bearings, the torsion spring is disposed at two ends of the wheel seat corresponding to the single wheel, an inner ring of the torsion spring is connected to the wheel seat, and an outer ring of the torsion spring is connected to the single wheel.

As a preferable scheme of the present invention, the base is provided with a fixing hole or a suction cup, when the base is provided with the fixing hole, the base passes through the fixing hole through a fixing member to connect the base to a fixing device, and when the base is provided with the suction cup, the base adsorbs the base to the fixing device through the suction cup.

Compared with the prior art, the invention has the following positive effects:

1. the invention provides a lock catch which comprises a lock catch body and a contact pin matched and spliced with the lock catch body, wherein the lock catch body comprises a lock catch shell, a first spring, an unlocking sliding block and a plurality of locking balls; the locking ball is connected with the unlocking slide block through an elastic mechanism, and the elastic mechanism can drive the locking ball to move radially outwards to be separated from the limiting groove when the unlocking slide block compresses the first spring. When the lock catch is unlocked, the unlocking slide block upwards compresses the first spring under the attraction of the magnet, the unlocking slide block upwards pulls the locking ball, so that the locking ball obtains a space moving towards the radial outer side, the unlocking slide block vertically pulls the locking ball to slip out of the limiting groove, and under the action of the elastic structure, the locking ball can move towards the radial outer side, so that the locking ball is separated from the limiting groove, a contact pin can be pulled out of the lock catch body, and the lock catch is smoothly unlocked.

2. The lock catch provided by the embodiment of the invention comprises a second spring and a rocker arm through an elastic mechanism, wherein an inner cavity is arranged in an unlocking sliding block, the second spring is transversely arranged in the inner cavity, one end of the second spring is connected with the side wall of the inner cavity, the other end of the second spring is connected with one end of the rocker arm, the other end of the rocker arm extends to the outer side of the unlocking sliding block and is connected with a locking ball, when a contact pin is inserted into a lock catch body, the first spring and the second spring are both in a compressed state, and the elastic force of the first spring is greater than that of the second spring. The unlocking slide block is connected with the locking ball through the second spring and the rocker arm, so that the locking ball can move radially under the vertical pulling of the unlocking slide block, when the unlocking slide block is locked, the locking ball can push the locking ball to move radially inwards under the action of the trapezoidal inclined plane at the end part, the locking ball is clamped in the limiting groove, and when the unlocking slide block is unlocked, the locking ball moves radially outwards under the pulling action of the unlocking slide block and the pushing action of the second spring to separate from the limiting groove.

Drawings

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

FIG. 1 is a schematic structural view of a prior art anti-theft buckle with a locking pin inserted into a lock sleeve;

FIG. 2 is a schematic view of a prior art anti-theft buckle during unlocking;

FIG. 3 is a schematic view of the latch of the present invention;

FIG. 4 is a schematic structural view of the connection between the unlocking slider and the locking ball in the present invention;

FIG. 5 is a schematic structural view of an unlocking slide block in the present invention;

FIG. 6 is a top view of the unlocking slide in the present invention;

FIG. 7 is a schematic structural view of an unlocking device according to the present invention;

FIG. 8 is a schematic view of the hulling wheel set of the present invention;

fig. 9 is a plan view of the unlocking means in the present invention.

In the figure: 1. inserting a pin; 101. a limiting groove; 2. a lock catch body; 201. a latch housing; 202. a first spring; 203. unlocking the slide block; 2031. a first magnet; 2032. a slider body; 2033. a shaft hole; 2034. a first slider; 2035. a second slider; 2036. a baffle plate; 2037. an inner cavity; 2038. perforating; 204. a second spring; 205. a rocker arm; 206. a locking ball; 207. a connecting shaft; 208. an outer housing; 2081. a convex structure; 3. an unlocking device; 301. hulling wheel sets; 3011. single-wheel; 3012. a bearing; 3013. a torsion spring; 3014. A wheel seat; 302. a third spring; 303. a base; 3031. a fixing hole; 304. a second magnet; 305. a support body; 306. an unlocking chamber; 4. a connecting seat; 5. locking nails; 6. iron beads; 7. a limiting ring; 8. a lock sleeve; 9. A housing; 10. a spring; 11. and (4) an iron ring.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, merely for convenience in describing and simplifying the present invention, 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example 1:

the latch provided by the embodiment includes, as shown in fig. 3, a latch body 2 and a pin 1 that is fittingly inserted into the latch body. When the lock catch is used, an article is clamped between the lock catch body 2 and the contact pin 1, and the contact pin 1 is inserted into the lock catch body 2, so that the lock catch is fixed on the article.

The lock catch body 2 comprises a lock catch shell 201, a first spring 202, an unlocking slide block 203 and a plurality of locking balls 206, the first spring 202, the unlocking slide block 203 and the locking balls 206 are sequentially arranged in the lock catch shell 201, a limiting groove 101 is formed in the pin 1, the pin 1 vertically penetrates through the locking balls 206 and is inserted into the unlocking slide block 203 and the first spring 202, and the locking balls 206 are respectively limited in the corresponding limiting grooves 101, so that the pin 1 is locked in the lock catch body 2.

The locking ball 206 is connected to the unlocking slider 203 by an elastic mechanism that can drive the locking ball 206 to move radially outward to disengage from the stopper groove 101 when the unlocking slider 203 compresses the first spring 202. As shown in fig. 3, when the latch of this embodiment is unlocked, the unlocking slider 203 compresses the first spring 202 upwards under the attraction of the magnet, the unlocking slider 203 pulls the locking ball 206 upwards, so that the locking ball 206 obtains a space moving radially outwards, the unlocking slider 203 pulls the locking ball 206 vertically to slip out of the limiting groove 101, and under the action of the elastic structure, the locking ball 206 can move radially outwards, so as to separate from the limiting groove 101, so that the pin 1 can be pulled out of the latch body 2, and the latch can be unlocked smoothly.

Preferably, the inner end surface of the lock casing 201 close to one end of the locking ball 206 is trapezoidal, and the first spring 202 presses the locking ball 206 through the unlocking slider 203 and abuts the locking ball 206 against the trapezoidal inner end surface of the lock casing. The inside of the lock casing is provided with a cavity for accommodating the first spring 202, the unlocking slider 203 and the locking ball 206, and the cavity is arranged in a trapezoid shape close to the inner side surface of the locking ball. The first spring 202 presses the locking ball 206 to the end face of the locking housing, and the trapezoidal inclined surface of the end face presses the locking ball 206 to the central axis direction of the pin 1, so that the locking ball 206 is limited.

Preferably, the elastic mechanism comprises a second spring 204 and a rocker arm 205, an inner cavity is arranged in the unlocking slide block 203, the second spring 204 is transversely arranged in the inner cavity, one end of the second spring 204 is connected with the side wall of the inner cavity, the other end of the second spring is connected with one end of the rocker arm 205, and the other end of the rocker arm 205 extends to the outer side of the unlocking slide block 203 and is connected with the locking ball 206. The unlocking slider 203 is connected to the locking ball 206 through the second spring 204 and the rocker arm 205, so that the locking ball 206 can move radially outward by the vertical pulling of the unlocking slider 203. The second spring 204 pushes the upper end of the rocker arm 205 radially inward, and the lower end of the rocker arm 205 tends to rotate radially outward. When the lock is locked, the locking ball 206 can push the locking ball 206 to move radially inward under the action of the trapezoidal slope at the end part to be limited in the limiting groove 101, and when the lock is unlocked, the locking ball 206 moves radially outward under the pulling action of the unlocking slide block 203 and the pushing action of the second spring 204 to be separated from the limiting groove 101.

When the pin 1 is inserted into the latch body 2, the first spring 202 and the second spring 204 are both in a compressed state, and the elastic force of the first spring 202 is greater than that of the second spring 204. The elastic force of the first spring 202 presses the locking ball 206 against the trapezoidal end face and presses the locking ball 206 radially inward under the pressing of the trapezoidal end face; the elastic force of the second spring can push the rocker arm 205 to drive the locking ball 206 to move towards the radial outer side, and during locking, because the elastic force of the first spring 202 is greater than the elastic force of the second spring 204, the acting force of the locking ball 206 driving towards the radial inner side is greater than the acting force driving towards the radial outer side, so that the locking ball 206 can be clamped in the limiting groove 101. When unlocking, the unlocking slide block 203 pulls the locking ball 206 to move upwards, the locking ball 206 is not extruded by the trapezoidal inclined surface and loses the acting force driven towards the radial inner side, and the elastic force of the second spring 204 pushes the rocker arm 205 to drive the locking ball 206 to move towards the radial outer side, so that the locking ball is separated from the limiting groove 101, and unlocking is realized.

Preferably, as shown in fig. 5 to 6, the unlocking slider 203 includes a first slider 2034 and a second slider 2035, the first slider 2034 and the second slider 2035 are both semicircular, the chord sides of the semicircular first slider 2034 and the semicircular second slider 2035 are opposite and are connected at two sides by a baffle 2036, a strip-shaped inner cavity 2037 is formed between the first slider 2034 and the second slider 2035, a through hole 2038 for the insertion needle 1 to pass through is provided at the center of the inner cavity 2037, one end of a second spring 204 is connected to the baffle 2036, the other end extends toward the through hole 2038 and is connected to a rocker arm 205, and the rocker arm 205 extends to the outside of the inner cavity 2037. Preferably, the elastic mechanism and the locking ball 206 comprise two sets, respectively, and the two second springs 204 are symmetrically disposed about the center line of the unlocking slider 203 in the inner cavity 2037. The bar-shaped inner cavity provides a telescopic space for the second spring 204 on the one hand, and the second spring 204 is limited in the inner cavity on the other hand, so that the second spring 204 is prevented from being bent, and a stable elastic effect is provided for the rocker arm 205.

Preferably, as shown in fig. 5, the unlocking slider 203 includes a first magnet 2031 and a slider body 2032, and the first magnet 2031 is disposed at one end of the slider body 2032 near the first spring 202. The upper ends of the first slider 2034 and the second slider 2035 are both first magnets 2031, and the lower ends of the first slider 2034 and the second slider 2035 are both slider bodies 2032. When the latch is unlocked, the magnet is arranged above the latch, the magnet attracts the unlocking slider 203 to slide upwards, the first magnet 2031 is arranged on the slider main body 2032, and the attraction of the external magnet to the unlocking slider 203 is increased through the principle of magnetic attraction, so that the latch is easier to unlock. In addition, the unlocking slider 203 may be made of a ferrous material.

Preferably, the rocker arm 205 is provided with a connecting shaft 207, a lateral shaft hole 2033 is provided on a side wall of the slider body 2032, and the rocker arm 205 is rotatably connected to the unlocking slider 203 through the connecting shaft 207 and the shaft hole 2033. The shaft hole 2033 penetrates through the side walls of the first slider 2034 and the second slider 2035, the connecting shafts 207 are disposed on both sides of the rocker arm 205, and the rocker arm 205 is disposed in the shaft holes 2033 of the first slider 2034 and the second slider 2035 through the two connecting shafts 207, so that the setting of the rocker arm 205 on the unlocking slider 203 is more stable.

Preferably, as shown in fig. 3, the latch body 2 further includes an outer shell 208, a convex structure 2081 is disposed on the outer shell 208, and the latch shell 201 is disposed in the convex structure 2081. The outer housing 208 is provided with an access opening into which the insertion pin extends, and the insertion hole of the locking housing 201 corresponds to the access opening. The pin 1 is inserted into the latch housing 201 from the outer housing 208.

Example 2

The unlocking device provided by this embodiment, as shown in fig. 7, the unlocking device is matched with the latch in embodiment 1, and is used for taking out the pin 1 from the latch body 2, the unlocking device includes a supporting main body 305, a base 303, a second magnet 304 and a shell removing mechanism, the supporting main body 305 is disposed on the base 303 and encloses and forms an unlocking cavity 306 with an upward opening on the base 303, a convex structure 2081 of the latch body 2 is matched with the unlocking cavity 306, the second magnet 304 is disposed on the base 303 at the bottom of the unlocking cavity 306, and the shell removing mechanism is disposed on the supporting main body 305 and protrudes into the unlocking cavity 306. When the lock catch is unlocked, the convex structure 2081 of the lock catch is inserted into the unlocking cavity 306 of the unlocking device, the second magnet 304 provides magnetic attraction for the lock catch, the shelling mechanism is attached to the outer surface of the convex structure 2081, and the convex structure 2081 can be automatically separated from the unlocking cavity 306 of the unlocking device through the shelling mechanism.

Preferably, the hulling mechanism comprises a third spring 302 and a hulling wheel set 301, a lateral adjustment cavity is provided on the support body 305, the third spring 302 is laterally provided in the adjustment cavity, one end of the third spring 302 is connected to the support body and the other end is connected to the hulling wheel set 301, and a portion of the hulling wheel set 301 extends into the unlocking cavity 306. The hulling wheel set 301 enables the outer convex structure 2081 to automatically release from the unlocking cavity 306, and the third spring 302 enables the hulling wheel set 301 to displace in the radial direction, so as to provide a regulation buffer space for the hulling wheel set 301 and also enable the hulling wheel set 301 to reset after working.

Preferably, as shown in fig. 8, the shelling wheel set 301 includes a single wheel 3011, a torsion spring 3013 and a wheel seat 3014, the wheel seat 3014 is connected to the third spring 302, the single wheel 3011 is connected to two ends of the wheel seat 3014 through bearings 3012 respectively, the single wheel 3011 is connected to the single wheel 3011 through bearings 3012 respectively, the torsion spring 3013 is disposed at two ends of the wheel seat 3014 corresponding to the single wheel, an inner ring of the torsion spring 3013 is connected to the wheel seat 3014 and an outer ring is connected to the single wheel 3011. When the lock catch is inserted into the unlocking cavity 306, the single wheel 3011 rotates along with the outer surface of the outer shell 208, the torsion spring 3013 stores the force while rotating, after unlocking, the lock catch body is released, and when the torsion spring 3013 releases the rotating force, the single wheel 3011 rotates in the opposite direction, so that the outer shell 208 is automatically released from the unlocking device.

Preferably, a coupling socket 4 protruding from the upper surface of the base 303 is provided on the base 303, and a recessed coupling groove is provided at the bottom end of the support body 305, the coupling groove being adapted to the coupling socket, and the support body 305 is coupled to the base 303 by fixing the coupling socket 4 in the coupling groove through a sidewall of the support body 305 and the coupling socket 4 by a screw.

Preferably, as shown in fig. 7, a fixing hole 3031 or a suction cup is provided on the base 303, and when the fixing hole 3031 is provided on the base 303, the base 303 passes through the fixing hole 3031 by a fixing member to connect the base 303 to the fixing device; when the base 303 is provided with the sucker, the base 303 adsorbs the base 303 on the fixing device through the sucker, so that the detachable setting of any scene is realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can make several variations and modifications without departing from the inventive concept of the present invention, and all such variations and modifications are intended to be covered by the scope of the present invention.

Claims

1. A lock catch is characterized by comprising a lock catch body (2) and a contact pin (1) matched with the lock catch body (2), wherein the lock catch body (2) comprises a lock catch shell (201), a first spring (202), an unlocking slide block (203) and a plurality of locking balls (206), the first spring (202), the unlocking slide block (203) and the locking balls (206) are sequentially arranged in the lock catch shell (201), a limiting groove (101) is formed in the contact pin (1), the contact pin (1) vertically penetrates through the locking balls (206) and is inserted into the unlocking slide block (203) and the first spring (202), and the locking balls (206) are respectively limited in the corresponding limiting grooves (101);

the locking ball (206) is connected with the unlocking slide block (203) through an elastic mechanism, and the elastic mechanism can drive the locking ball (206) to move radially outwards to be separated from the limiting groove (101) when the unlocking slide block (203) compresses the first spring (202);

the elastic mechanism comprises a second spring (204) and a rocker arm (205), an inner cavity is arranged in the unlocking sliding block (203), the second spring (204) is transversely arranged in the inner cavity, one end of the second spring (204) is connected with the side wall of the inner cavity, the other end of the second spring is connected with one end of the rocker arm (205), and the other end of the rocker arm (205) extends to the outer side of the unlocking sliding block (203) and is connected with the locking ball (206);

when the contact pin (1) is inserted into the lock catch body (2), the first spring (202) and the second spring (204) are both in a compressed state, and the elastic force of the first spring (202) is greater than that of the second spring (204).

2. A latch as claimed in claim 1, characterized in that the inner end of the latch housing (201) near the end of the locking ball (206) is trapezoidal, and the first spring (202) presses the locking ball (206) via the unlocking slide (203) and presses the locking ball (206) against the trapezoidal inner end of the latch housing.

3. A latch as claimed in claim 2, characterized in that the unlocking slide (203) comprises a first magnet (2031) and a slide body (2032), the first magnet (2031) being arranged at an end of the slide body (2032) close to the first spring (202); the rocker arm (205) is provided with a connecting shaft (207), the side wall of the slider main body (2032) is provided with a transverse shaft hole (2033), and the rocker arm (205) is rotatably connected to the unlocking slider (203) through the connecting shaft (207) and the shaft hole (2033).

4. A latch as claimed in claim 2, characterized in that the unlocking slider (203) comprises a first slider (2034) and a second slider (2035), the first slider (2034) and the second slider (2035) are both semicircular, the chordal edges of the semicircular first slider (2034) and second slider (2035) are opposite and connected at both sides by a baffle (2036), a strip-shaped inner cavity (2037) is formed between the first slider (2034) and the second slider (2035), a through hole (2038) for the insertion pin (1) to pass through is arranged in the center of the inner cavity (2037), the second spring (204) has one end connected to the baffle (2036) and the other end extending towards the through hole (2038) and connected to the rocker (205), and the rocker (205) extends to the outside of the inner cavity (2037).

5. A latch as claimed in claim 3, characterized in that the latch body (2) further comprises an outer housing (208), wherein the outer housing (208) is provided with a protruding structure (2081), and wherein the latch housing is provided in the protruding structure (2081).

6. An unlocking device, characterized in that it cooperates with a lock according to any one of claims 1 to 5 for removing a pin (1) from the lock body (2), and comprises a support body (305), a base (303), a second magnet (304) and a hulling mechanism, wherein the support body (305) is arranged on the base (303) and encloses an unlocking chamber (306) with an upward opening on the base (303), a protruding structure (2081) of the lock body (2) is adapted to the unlocking chamber (306), the second magnet (304) is arranged on the base (303) at the bottom of the unlocking chamber (306), and the hulling mechanism is arranged on the support body (305) and protrudes into the unlocking chamber (306).

7. An unlocking device according to claim 6, characterized in that the hulling mechanism comprises a third spring (302) and a hulling wheel set (301), the supporting body (305) being provided with a transverse adjustment cavity, the third spring (302) being transversely arranged in the adjustment cavity, one end of the third spring (302) being connected to the supporting body and the other end being connected to the hulling wheel set (301), a portion of the hulling wheel set (301) extending into the unlocking chamber (306).

8. The unlocking device according to claim 7, wherein the shelling wheel set (301) comprises a single wheel (3011), a torsion spring (3013) and a wheel seat (3014), the wheel seat (3014) is connected to the third spring (302), two ends of the wheel seat (3014) are respectively connected to the single wheel (3011) through bearings (3012), the torsion spring (3013) is arranged at two ends of the wheel seat (3014) corresponding to the single wheel, an inner ring of the torsion spring (3013) is connected to the wheel seat (3014), and an outer ring of the torsion spring (3013) is connected to the single wheel (3011).

9. An unlocking device according to claim 6, wherein a fixing hole (3031) or a suction cup is arranged on the base (303), when the fixing hole (3031) is arranged on the base (303), the base (303) passes through the fixing hole (3031) through a fixing member to connect the base (303) to the fixing device, and when the suction cup is arranged on the base (303), the base (303) sucks the base (303) on the fixing device through the suction cup.