CN219367362U - Locking device, safety lock and display device - Google Patents

Abstract

The utility model relates to a locking device, a safety lock and a display device, wherein the locking device comprises: the clamping hook piece is used for being connected with the mounting structure in a rotating mode, the clamping hook piece is used for being connected with the display module in a clamping mode when rotating towards the locking direction, and the clamping hook piece is used for being separated from the display module when rotating towards the opening direction; the matching piece is connected with the clamping hook piece and is used for being magnetically matched with the unlocking piece so as to drive the clamping hook piece to rotate along the opening direction, and the clamping hook piece has a trend of moving along the locking direction when the matching piece is separated from the unlocking piece in a magnetic matching mode. Therefore, the clamping hook piece can be connected with the display module in a clamping manner when rotating towards the locking direction, and the connection mode is more stable. The safety lock comprises the locking device, so that the connection between the display module and the mounting structure is more stable. The display device comprises the safety lock, and the structure is more stable.

Description

Locking device, safety lock and display device

Technical Field

The utility model relates to the technical field of display module assembly, in particular to a locking device, a safety lock and a display device.

Background

The display module is an electronic component widely used for displaying image content or text content. The display module is typically mounted to a housing or other similar mounting structure during use.

In the prior art, the display module is generally fixed with the box body through magnetism, and a safety rope is arranged between the display module and the box body to ensure that the display module is not separated from the box body. However, the cost of the safety rope is relatively high, and the display module cannot be thoroughly prevented from falling off from the box body, and only the falling display module is hung in the mid-air, so that the connection is unstable, potential safety hazards exist and the display effect is affected.

Disclosure of Invention

Based on this, it is necessary to provide a safety lock and a display device for how to make the connection between the display module and the case more stable.

A locking device for connecting a display module to a mounting structure, comprising:

the clamping hook piece is used for being connected with the mounting structure in a rotating mode, the clamping hook piece is used for being connected with the display module in a clamping mode when rotating towards the locking direction, and the clamping hook piece is used for being separated from the display module when rotating towards the opening direction;

the matching piece is connected with the clamping hook piece and is used for being magnetically matched with the unlocking piece so as to drive the clamping hook piece to rotate along the opening direction, and the clamping hook piece has a trend of moving along the locking direction when the matching piece is separated from the unlocking piece in a magnetic matching mode.

In one embodiment, the hook member and the mating member are distributed along a gravity direction, a tangential direction of the locking direction coincides with the gravity direction, and the weight of the hook member is not greater than the weight of the mating member.

In one embodiment, the locking device further comprises a base, the base comprises a bottom plate, a rotating part and a limiting part, the rotating part and the limiting part are both arranged on the bottom plate, the clamping hook piece and the matching piece are rotationally connected with the rotating part, the extending direction of the limiting part is the same as the distribution direction of the clamping hook piece and the matching piece, the clamping hook piece can rotate to be in butt joint with the limiting part along the locking direction, and the matching piece can also rotate to be in butt joint with the limiting part along the direction opposite to the locking direction.

In one embodiment, the display module comprises a module buckle, the hook piece comprises a clamping portion located at one end of the hook piece and used for being close to the display module, an introduction face is arranged on one side, facing the display module, of the clamping portion, and the module buckle is used for being matched with an inclined plane of the introduction face to slide to be matched with the clamping portion in a clamping mode.

In one embodiment, the clamping portion further includes a clamping action surface, the module buckle cooperates with the inclined surface of the guiding surface to slide to contact with the clamping action surface, and an included angle between the clamping action surface and gravity when the clamping portion is clamped with the module buckle is smaller than a maximum static friction angle between the clamping portion and the module buckle.

In one embodiment, the matching piece comprises an armature and a mounting frame, the armature is used for being magnetically matched with the unlocking piece, a mounting groove for accommodating the armature is formed in the mounting frame, and the mounting frame is connected with the clamping hook piece.

A security lock, the security lock comprising:

a closure as in any one of the above embodiments;

the unlocking piece comprises a magnetic piece, and the magnetic piece is magnetically matched with the matching piece to drive the clamping hook piece to rotate towards the opening direction.

In one embodiment, the unlocking piece further comprises an adsorption structure for adsorbing the display module, so that the display module is fixed relative to the unlocking piece.

A display device, the display device comprising:

a mounting structure;

a safety lock according to any one of the preceding embodiments, wherein the locking means is provided on the mounting structure;

the display module is provided with a module buckle, and the module buckle is connected with the clamping hook piece in a clamping mode.

In one embodiment, one of the hook member and the module buckle is provided with a clamping portion, and the other is provided with a clamping groove in clamping fit with the clamping portion.

The locking device can be in clamping connection with the display module when the clamping hook piece rotates towards the locking direction. Compared with the prior art adopting a connection mode of a safety rope, the connection between the display module and the mounting structure is realized through the clamping hook piece, and the connection mode is more stable. And, because the cooperation piece is used for cooperating with the unblock piece magnetism, can control locking device's rotation direction through the relation of cooperation piece and unblock piece, so can conveniently control locking device and display module assembly block or separation, installation and dismantlement are convenient and simple structure, are convenient for dismantle the display module assembly from the mounting structure, the maintenance and the maintenance of the display module assembly of being convenient for.

Drawings

FIG. 1 is an exploded view of a display device according to an embodiment of the present utility model;

FIG. 2 is a front view of a display module and mounting structure of the display device of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partial enlarged view at B in FIG. 3;

FIG. 5 is a partial enlarged view of the hook member of the display device shown in FIG. 4 in an open state;

FIG. 6 is an exploded view of the closure of the display device of FIG. 4;

fig. 7 is an axial schematic view of the module buckle in the display device shown in fig. 4.

Reference numerals: 10. a display device; 100. a display module; 110. a module buckle; 111. a clamping groove; 200. a mounting structure; 300. a safety lock; 310. a locking device; 311. a mating member; 311a, an armature; 311b, a mounting rack; 3120. a hook member; 3121. an engagement portion; 3121a, an introduction face; 3121b, a clamping action surface; 3122. a connecting body; 313. a base; 313a, a bottom plate; 313b, a rotating part; 313c, a limiting part; 320. an unlocking member; 321. a magnetic member; 322. a handle; 400. a connection structure; 410. a first connector; 420. and a second connecting piece.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, fig. 1 is an exploded view of a display device according to an embodiment of the utility model, and a display device 10 according to an embodiment of the utility model includes a display module 100, a mounting structure 200, and a security lock 300. The safety lock 300 is used for connecting the display module 100 with the mounting structure 200, and the display module 100 and the box body can be conveniently detached from the mounting structure 200 by the safety lock 300 to maintain the display module 100. The mounting structure 200 may specifically be, for example, a box or the like.

Referring to fig. 2-5, in one embodiment, the security lock 300 includes a locking device 310 and an unlocking member 320. The locking device 310 is disposed on the mounting structure 200, and the locking device 310 is used to connect the display module 100 with the mounting structure 200. The lock 310 includes: hook member 3120 and mating member 311. The hook 3120 is configured to be rotatably connected to the mounting structure 200, and when the hook 3120 rotates in the locking direction, the hook 3120 is configured to be engaged with the display module 100, and when the hook 3120 rotates in the opening direction, the hook 3120 is configured to be separated from the display module 100. The engaging member 311 is connected to the latch member 3120, and the engaging member 311 is configured to magnetically engage with the unlocking member 320 to drive the latch member 3120 to rotate in the opening direction. The trip member 3120 has a tendency to move in the locking direction when the engaging member 311 is disengaged from the unlocking member 320.

The locking device 310 can be engaged with the display module 100 when the hook member 3120 rotates in the locking direction. Compared with the prior art adopting a connection mode of a safety rope, the display module 100 and the mounting structure 200 are connected through the clamping hook piece 3120, and the connection mode is more stable. Moreover, since the matching piece 311 is used for magnetically matching with the unlocking piece 320, the rotation direction of the locking device 310 can be controlled through the relation between the matching piece 311 and the unlocking piece 320, so that the locking device 310 can be conveniently controlled to be clamped or separated with the display module 100, the installation and the disassembly are convenient, the structure is simple, the display module 100 is conveniently disassembled from the installation structure 200, and the maintenance and the repair of the display module 100 are convenient. The locking direction is shown by an arrow K in the directions of fig. 4 and 5; the opening direction is seen in the direction of arrow M in fig. 4 and 5.

Further, when the unlocking member 320 is disengaged from the mating member 311, the hook member 3120 has a tendency to move along the locking direction, that is, when the unlocking member 320 does not interact with the locking device 310, the hook member 3120 can lock and keep locking the display module 100, so as to ensure the stability of the connection between the display module 100 and the mounting structure 200.

Further, since the unlocking piece 320 is magnetically engaged with the engaging piece 311, the unlocking piece 320 can be rapidly moved to a position corresponding to the engaging piece 311 by magnetic attraction or magnetic repulsion between the unlocking piece 320 and the engaging piece 311. That is, no additional mark is needed to align the unlocking member 320 with the mating member 311.

Referring to fig. 4 and 5, in one embodiment, the display module 100 includes a module buckle 110, and the module buckle 110 is configured to be engaged with the hook 3120. In this way, the module buckle 110 and the hook member 3120 are connected, so that the entire display module 100 can be fixed to the mounting structure 200. It is understood that the latch 3120 is configured to be engaged with the module buckle 110 when rotated in the locking direction, and the latch 3120 is configured to be disengaged from the module buckle 110 when rotated in the opening direction.

Referring to fig. 4 and 5, in one embodiment, the unlocking member 320 includes a magnetic member 321. The magnetic member 321 magnetically cooperates with the engaging member 311 to drive the latch member 3120 to rotate in the opening direction. It is understood that the mating member 311 may be a ferromagnetic material that can magnetically mate with the magnetic member 321. The matching piece 311 is made of ferromagnetic material, and the matching piece 311 can attract or repel with a magnetic structural piece. The matching member 311 may be a metal material capable of adsorbing with the magnetic member 321, such as iron, nickel, cobalt, neodymium iron boron, samarium cobalt, and alnico. Of course, the mating member 311 may also be a magnetic element that is capable of being mutually exclusive with the magnetic member 321.

The safety lock 300 is configured such that the trip member 3120 can be driven to rotate in the locking direction by controlling whether the unlocking member 320 is magnetically engaged with the engaging member 311 of the locking device 310. Therefore, the connection relation between the locking device 310 and the module buckle 110 can be adjusted to be locked or unlocked, so that the connection and separation of the display module 100 and the mounting structure 200 can be controlled, and the mounting and dismounting are convenient and the structure is simple.

It is understood that the magnetic engagement between the magnetic member 321 and the engaging member 311 includes magnetic attraction and magnetic repulsion. The magnetic engagement between the magnetic member 321 and the engaging member 311 can be specifically set to be magnetic attraction or magnetic repulsion according to the relative positions of the engaging member 3120 and the engaging member 311 and the rotation direction of the two.

Referring to fig. 3 and 4, in one embodiment, the display device 10 further includes a connection structure 400. The connection structure 400 includes a first connection member 410 and a second connection member 420, the first connection member 410 is disposed on the display module 100, and the second connection member 420 is disposed on the mounting structure 200. The first and second connection members 410 and 420 may be connected to each other to fix the display module 100 with respect to the mounting structure 200. In this way, the safety lock 300 is combined to further secure the stability of the connection between the display module 100 and the mounting structure 200. The first connecting piece 410 and the second connecting piece 420 can be fixed by magnetic attraction. That is, at least one of the first connector 410 and the second connector 420 is a magnetic body, and the other is a ferromagnetic substance that can be attracted to the magnetic body. In this way, the display module 100 and the mounting structure 200 can be fixed to each other by the first connector 410 and the second connector 420. In addition, the connection mode and the disassembly mode of the magnetic attraction fixing are simpler, and the front maintenance of the display module 100 is facilitated.

The connection structure 400 combines the safety lock 300, and can improve the stability of connection between the display module 100 and the mounting structure 200 on the basis of ensuring a simple connection mode between the display module 100 and the mounting structure 200. Compared with the prior art that the display module 100 is connected between the display module 100 and the mounting structure 200 through the safety rope, the safety lock 300 in each embodiment can ensure that the display module 100 cannot fall off and be separated from the mounting structure 200 when in use, and the disassembly mode is simpler and more convenient when the disassembly and maintenance are needed.

It should be noted that, in the conventional technology, the display module 100 and the mounting structure 200 are not sufficiently connected by magnetic attraction, and the display module 100 may be displaced or even fall off relative to the mounting structure 200 based on factors such as vibration. Therefore, a safety rope is required to be added in the conventional art to prevent the display module 100 from being separated from the mounting structure 200. Compared with the connection by adopting the safety rope, the clamping locking mode of the safety lock 300 according to the embodiments can make the connection between the display module 100 and the mounting structure 200 more stable and the disassembly, assembly and maintenance more convenient.

In one embodiment, the unlocking member 320 further includes a handle 322 and an adsorption structure (not shown) for adsorbing the display module 100. The display module 100 can be fixed relative to the unlocking member 320 by the adsorption structure. The magnetic member 321 and the adsorption structure are both disposed on the handle 322. When the magnetic member 321 rotates the engaging member 311 and the hook member 3120 around the opening direction, the adsorption structure can adsorb the display module 100, so that the display module 100 separated from the mounting structure 200 can be fixed relative to the unlocking member 320. So configured, the display module 100 can be conveniently picked up and transferred by the handle 322.

Referring to fig. 4 to 6, in one embodiment, the locking device 310 further includes a base 313, and the base 313 is fixedly connected to the mounting structure 200. Both the hook 3120 and the mating member 311 are rotatably connected to the base 313, i.e., the hook 3120 and the mating member 311 are connected to the mounting structure 200 through the base 313.

Referring to fig. 4 and 5, in one embodiment, the hook members 3120 and the engaging members 311 are distributed along the gravity direction, and a tangential direction of the locking direction coincides with the gravity direction. It can be appreciated that, since the hook 3120 and the mating member 311 are distributed along the gravity direction, the hook 3120 and the mating member 311 can rotate along the locking direction or at least have a tendency to rotate along the locking direction based on the gravity of the hook 3120 and the mating member 311 without being affected by other forces, so that the locking device 310 can keep the locking engagement with the module buckle 110. In other words, in the present embodiment, the hook member 3120 and the matching member 311 can have a tendency to rotate along the locking direction, so as to achieve the self-locking of the hook member 3120 and the module buckle 110.

The weight of the hook 3120 is no greater than the weight of the mating member 311. Since the unlocking member 320 magnetically cooperates with the mating member 311 to rotate the mating member 311 and the hook member 3120 around the opening direction, the weight of the hook member 3120 is not greater than that of the mating member 311, so that the hook member 3120 can move along with the movement of the mating member 311, and the hook member 3120 can be separated from the module buckle 110 more conveniently to separate the display module 100 from the mounting structure 200.

It should be noted that, the hook members 3120 and the matching members 311 are distributed along the gravity direction, which means that the hook members 3120 and the matching members 311 are distributed along the gravity direction when the display module 100 and the mounting structure 200 are in the normal use state. When the display module 100 and the mounting structure 200 are in a different state from the normal use state, the hook members 3120 and the mating members 311 can be distributed along other directions.

In some embodiments, the security lock 300 may also include a retainer (not shown, infra). The retaining member is an elastic member. The retaining member can move the clasp 3120 in the locking direction or can have a tendency to move the clasp 3120 in the locking direction. One end of the holding member is connected to the mating member 311, and the other end of the holding member is connected to the mounting structure 200 so as to be elastically connected between the mating member 311 and the mounting structure 200 by the holding member, so that the mating member 311 and the trip member 3120 connected to the mating member 311 can move in the locking direction or at least have a tendency to move in the locking direction. That is, in this embodiment, the hook member 3120 may be enabled to move in the locking direction or at least have a tendency to move in the locking direction by the resilient nature of the retaining member.

It will be appreciated that depending on the particular connection point of the retainer to the mounting structure 200, whether the retainer is a tension or compression spring may be provided.

Referring to fig. 4 to 7, in one embodiment, the mating member 311 includes an armature 311a and a mounting frame 311b. The mounting bracket 311b is provided with a mounting groove (not shown) for receiving the armature 311a, and the mounting bracket 311b is coupled to the trip member 3120. It is understood that the armature 311a can magnetically cooperate with the magnetic member 321. Furthermore, the provision of the armature 311a also increases the overall weight of the mating member 311 so that the trip member 3120 moves with the mating member 311.

In other embodiments, the retaining member may also be connected at one end to mating member 311 and at the other end to base 313 such that mating member 311 and trip member 3120 connected to mating member 311 are capable of movement in the locking direction or at least have a tendency to move in the locking direction. In this embodiment, the retaining member may also be a torsion spring, and the retaining member may be disposed at a rotational connection portion between the mating member 311 and the base 313. That is, the torsion spring may have one end abutting against the mating member 311 and one end abutting against the base 313, so as to ensure that the mating member 311 and the hook member 3120 can move in the locking direction or at least have a tendency to move in the locking direction.

Referring to fig. 6, in one embodiment, the base 313 includes a base 313a, and a rotating portion 313b and a limiting portion 313c both disposed on the base 313 a. The engaging member 311 and the engaging member 3120 are rotatably connected to the rotating portion 313 b. The extending direction of the limiting portion 313c is the same as the distribution direction of the hook 3120 and the mating member 311, so as to ensure that the hook 3120 and the mating member 311 can both rotate to abut against the limiting portion 313c. The hook 3120 can rotate to be abutted with the limiting portion 313c along the locking direction; the engaging piece 311 can also be rotated in a direction opposite to the locking direction to abut against the stopper 313c. Thus, the limiting portion 313c can limit the rotation angle of the hook member 3120 and the mating member 311 in the locking direction and the opening direction, so that the rotation angle of the hook member 3120 and the mating member is within the expected range, and the hook member 3120 is prevented from rotating to a position incapable of being engaged with the module buckle 110.

Referring to fig. 4, 5 and 7, in one embodiment, one of the hook member 3120 and the module buckle 110 is provided with a locking portion 3121, and the other is provided with a locking groove 111 engaged with the locking portion 3121, and the display module 100 and the mounting structure 200 can be mutually fixed through the locking engagement of the locking portion 3121 and the locking groove 111.

The clamping groove 111 may be specifically disposed on the module buckle 110. It can be appreciated that the groove-like structure of the engaging groove 111 is simpler and smaller in volume than the hook-like structure of the engaging portion 3121. Thus, the clamping groove 111 is arranged on the module buckle 110, so that the whole structure of the display module 100 is simpler and the weight is lighter.

As shown in fig. 7, the module buckle 110 may have a plate-shaped rotation structure, two ends of the module buckle 110 are connected with the display module 100, and a clamping groove 111 is formed between two ends of the module buckle 110 at intervals for being clamped and matched with the clamping hook 3120.

For ease of understanding and description, the engaging portion 3121 is provided on the hook member 3120, and the engaging groove 111 is provided on the module buckle 110. Otherwise, the same procedure is omitted.

Referring to fig. 4 and 5, in one embodiment, the engaging portion 3121 is disposed at an end of the hook member 3120 near the display module 100, so as to be engaged with the engaging groove 111 of the module buckle 110. The side of the engaging portion 3121 facing the display module 100 is provided with a guiding surface 3121a, and the module buckle 110 is in slant fit with the guiding surface 3121a to slide into engagement with the engaging portion 3121. In other words, the guiding surface 3121a is provided to facilitate the module buckle 110 sliding relative to the hook member 3120 to the engagement groove 111 to engage with the engagement portion 3121.

Referring to fig. 4 and 5, when the module buckle 110 contacts the guiding surface 3121a, the module buckle 110 can gradually push the hook member 3120 to rotate in the opening direction. When the module button 110 slides along the introducing surface 3121a to the end and finally separates from the introducing surface 3121a, the engaging member 3120 rotates in the locking direction based on the gravity of the engaging member 311 and the engaging member 3120 or based on the holding force of the holding member, so that the engaging portion 3121 is engaged in the engaging groove 111.

Referring to fig. 4 and fig. 5, specifically, the hook member 3120 includes a connecting body 3122 and an engaging portion 3121 connected to the connecting body 3122, and one end of the connecting body 3122 away from the engaging portion 3121 is connected to the base 313 and the mating member 311. The introduction surface 3121a is inclined with respect to the connection body 3122.

With continued reference to fig. 4, in one embodiment, the engaging portion 3121 further includes an engaging surface 3121b. The module button 110 is inclined to mate with the lead-in surface 3121a to eventually slide into contact with the snap-action surface 3121b. In other words, when the module buckle 110 and the engagement surface 3121b are in close contact with each other, the module buckle 110 and the hook member 3120 are in the locking state. The included angle between the clamping acting surface 3121b and gravity when the clamping part 3121 is clamped with the module buckle 110 is smaller than the maximum static friction angle between the clamping part 3121 and the module buckle 110. In this way, the module buckle 110 and the clamping acting surface 3121b can be prevented from being separated due to the gravity of the module buckle 110 and the display module 100. Referring to fig. 4, the direction of gravity is shown as G in fig. 4, the extension line of the engagement surface 3121b is shown as H in fig. 4, and the angle between the engagement surface 3121b and gravity is shown as Q in fig. 4.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A locking device for connecting a display module to a mounting structure, comprising:

the clamping hook piece is used for being connected with the mounting structure in a rotating mode, the clamping hook piece is used for being connected with the display module in a clamping mode when rotating towards the locking direction, and the clamping hook piece is used for being separated from the display module when rotating towards the opening direction;

the matching piece is connected with the clamping hook piece and is used for being magnetically matched with the unlocking piece so as to drive the clamping hook piece to rotate along the opening direction, and the clamping hook piece has a trend of moving along the locking direction when the matching piece is separated from the unlocking piece in a magnetic matching mode.

2. A locking device according to claim 1, wherein the hook members and the mating members are distributed along the direction of gravity, the direction of a tangent to the locking direction coincides with the direction of gravity, and the weight of the hook members is not greater than the weight of the mating members.

3. The locking device according to claim 1, further comprising a base, wherein the base comprises a bottom plate, a rotating part and a limiting part, the rotating part and the limiting part are both arranged on the bottom plate, the clamping hook piece and the matching piece are rotationally connected with the rotating part, the extending direction of the limiting part is the same as the distribution direction of the clamping hook piece and the matching piece, the clamping hook piece can rotate to be abutted with the limiting part along the locking direction, and the matching piece can also rotate to be abutted with the limiting part along the direction opposite to the locking direction.

4. The locking device according to claim 1, wherein the display module comprises a module buckle, the hook member comprises a clamping portion located at one end of the hook member and close to the display module, an introduction surface is disposed on a side of the clamping portion facing the display module, and the module buckle is used for being matched with the introduction surface in an inclined plane to slide to be matched with the clamping portion in a clamping manner.

5. The locking device of claim 4, wherein the engagement portion further comprises a snap-in surface, the module clasp mates with the lead-in surface bevel to slide into contact with the snap-in surface, and an angle between the snap-in surface and gravity when the engagement portion is snapped into engagement with the module clasp is less than a maximum static friction angle between the engagement portion and the module clasp.

6. A locking device according to claim 1, wherein the mating member comprises an armature for magnetically mating with the unlocking member and a mounting bracket having a mounting slot for receiving the armature, the mounting bracket being connected to the hook member.

7. A security lock, the security lock comprising:

a closure as claimed in any one of claims 1 to 6;

the unlocking piece comprises a magnetic piece, and the magnetic piece is magnetically matched with the matching piece to drive the clamping hook piece to rotate towards the opening direction.

8. The safety lock according to claim 7, wherein the unlocking member further comprises an adsorption structure for adsorbing the display module, so that the display module is fixed relative to the unlocking member.

9. A display device, characterized in that the display device comprises:

a mounting structure;

a safety lock according to claim 7 or 8, the locking means being provided on the mounting structure;

the display module is provided with a module buckle, and the module buckle is connected with the clamping hook piece in a clamping mode.

10. The display device according to claim 9, wherein one of the hook member and the module buckle is provided with a locking portion, and the other is provided with a locking groove in locking engagement with the locking portion.