Locking device, display device and splicing method

Abstract

The invention discloses a locking device, a display device and a splicing method, and relates to the technical field of display, the locking device comprises a support and a supporting plate which are oppositely arranged, and the side, away from the support, of the supporting plate is used for bearing a display unit; one of the support and the supporting plate comprises a first pin column, the other comprises a first switch, one comprises a second pin column, the other comprises a second switch, and in the installation and use process of the display unit, after the flatness of the display surface of the display unit is adjusted, the first switch can be controlled to be in an off state, and the display surface of the display unit can be controlled to be in an off state. The first switch is used for preventing the inserted first pin from being pulled out, so that the distance between the support and the supporting plate is prevented from being increased, the second switch is controlled to be in an off state, the second switch is used for preventing the inserted second pin from being further inserted, so that the distance between the support and the supporting plate is prevented from being reduced, and the distance between the support and the supporting plate is kept unchanged. Therefore, the flatness of the display surface of the display unit is kept unchanged, and the display effect is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a locking device, a display device and a splicing method. Background Art

[0002] A display device with a flexibly detachable display unit can meet various display requirements, such as displaying a larger area or more shapes. However, during the installation and use of the display unit, how to ensure the flatness of the display surface of the display unit is the key to improving the display effect of the display device. Summary of the invention

[0003] In order to solve the above technical problems, the embodiments of the present application provide a locking device, a display device and a splicing method to ensure the flatness of the display surface of the display unit and improve the display effect of the display device during the installation and use of the display unit.

[0004] To achieve the above objectives, the present application provides the following technical solutions:

[0005] A locking device, comprising:

[0006] The bracket and the support plate are arranged opposite to each other, and the side of the support plate facing away from the bracket is used to carry the display unit;

[0007] One of the bracket and the support plate includes a first pin, and the other includes a first switch. When the first switch is in an off state, the first pin is inserted into the first switch, and the first switch resists the first pin from being withdrawn.

[0008] One of the bracket and the support plate includes a second pin, and the other includes a second switch. When the second switch is in an off state, the second pin is inserted into the second switch, and the second switch resists further insertion of the second pin.

[0009] A display device comprises the above locking device; the display device comprises a display panel, and the display panel is located on a side of the support plate away from the bracket.

[0010] A splicing method, comprising:

[0011] A plurality of display units are respectively attached to their corresponding support plates, with the display surface of the display unit being located on the side of the display unit away from the support plate;

[0012] Each support plate is detachably connected to the bracket from a side of the support plate away from the display unit; wherein, one of the bracket and the support plate comprises a first pin, and the other comprises a first switch, and by inserting the first pin into the first switch and controlling the first switch to be in an off state, the first switch locks the first pin and resists the first pin from being withdrawn; one of the bracket and the support plate comprises a second pin, and the other comprises a second switch, and by inserting the second pin into the second switch and controlling the second switch to be in an off state, the second switch locks the second pin and resists further insertion of the second pin;

[0013] From the display surface side of the display unit, placing each display unit on the same platform;

[0014] By adjusting the locking height of the first switch to the first pin between each support plate and the bracket, and the locking height of the second switch to the second pin, the display surface of each display unit is made to fit with the platform, and the splicing of each display unit is completed.

[0015] Compared with the prior art, the above technical solution has the following advantages:

[0016] The locking device provided in the embodiment of the present application includes a bracket and a support plate arranged opposite to each other, and the support plate is used to carry the display unit on the side away from the bracket; one of the bracket and the support plate includes a first pin and the other includes a first switch, when the first switch is in the off state, the first pin is inserted into the first switch, and the first switch resists the first pin from being withdrawn; and one of the bracket and the support plate includes a second pin and the other includes a second switch, when the second switch is in the off state, the second pin is inserted into the second switch, and the second switch resists the second pin from being further inserted. In this way, during the installation and use of the display unit, after the flatness of the display surface of the display unit is adjusted, the first switch can be controlled to be in the off state, and the first switch can be used to resist the insertion of the first pin, thereby avoiding the increase of the distance between the bracket and the support plate, and the second switch can be controlled to be in the off state, and the second switch can be used to resist the insertion of the second pin, thereby avoiding the decrease of the distance between the bracket and the support plate, that is, the distance between the bracket and the support plate is kept unchanged, thereby maintaining the flatness of the display surface of the display unit located on the side of the support plate away from the bracket unchanged, thereby improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1A schematic cross-sectional structure diagram of a locking device provided in an embodiment of the present application;

[0019] Figure 2 A schematic cross-sectional structure diagram of a locking device provided in an embodiment of the present application when the first switch is in an off state and the second switch is in an off state;

[0020] Figure 3 A structural schematic diagram of a locking device provided in an embodiment of the present application;

[0021] Figure 4 A partial exploded view of a locking device provided in an embodiment of the present application;

[0022] Figure 5 A cross-sectional structural diagram of a first pin and a first switch portion in a locking device provided in an embodiment of the present application;

[0023] Figure 6 for Figure 5 Schematic diagram of

[0024] Figure 7 The force condition of the ball / cylinder in the engaging member when the first switch in the locking device provided in the embodiment of the present application is in the off state;

[0025] Figure 8 The force applied to the ball / cylinder in the engaging member when the first switch in the locking device provided in the embodiment of the present application is in the off state and the first pin is forcibly pulled out;

[0026] Figure 9a-9d Schematic diagram of several states of the process in which the first pin is inserted into the first switch and locked by the first switch;

[0027] Fig.10 for Figure 1 Schematic diagram of the AA' section;

[0028] Fig.11 A schematic top view of a second switch in the locking device provided in an embodiment of the present application;

[0029] Fig.12 A schematic top view of another second switch in the locking device provided in an embodiment of the present application;

[0030] Fig.13a A schematic diagram of the cross-sectional structure of a locking device provided in an embodiment of the present application when the second switch is in an open state and an AA' cross-sectional diagram;

[0031] Fig.13b A schematic cross-sectional structure diagram of a second switch in a locking device provided in an embodiment of the present application when the second switch is in an intermediate state and an AA' cross-sectional diagram;

[0032] Fig.13c A schematic diagram of the cross-sectional structure when the second switch of a locking device provided in an embodiment of the present application is in a closed state and an AA' cross-sectional diagram;

[0033] Figure 14-Figure 21 Schematic diagrams of several combinations of a first damping group consisting of a first pin and a first switch and a second damping group consisting of a second pin and a second switch in the locking device provided in an embodiment of the present application;

[0034] Fig. 22 A schematic cross-sectional structure diagram of another locking device provided in an embodiment of the present application;

[0035] Figure 23a-23e A schematic diagram of the structures corresponding to each step in a splicing method provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 100-bracket; 200-support plate; 300-display unit; 400-locking device; 500-display device; 600-platform; 10-first pin; 20-first switch; 30-second pin; 40-second switch; 21-first frame; 22-engaging member; 23-first elastic member; 24-baffle; K1-first through hole; P1-first accommodating space; S1-first inclined plane; S2-second inclined plane; 41-second frame; 42-clamping member; 420-clamping part; 43-elastic component; 431-first sub-elastic component; 432-second sub-elastic component; 433-third sub-elastic component; 411-top; 412-side wall; K3-third through hole; P2-second accommodating space; S3-third inclined plane; S4-fourth inclined plane; M1-clamping surface. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] As described in the background technology section, during the installation and use of the display unit, how to ensure the flatness of the display surface of the display unit is the key to improving the display effect of the display device.

[0041] In view of this, an embodiment of the present application provides a locking device. Figure 1 FIG. 4 shows a cross-sectional structural diagram of a locking device provided in an embodiment of the present application. Figure 1 As shown, the locking device includes a bracket 100 and a support plate 200 that are arranged opposite to each other. The side of the support plate 200 away from the bracket 100 is used to carry the display unit 300. The display surface of the display unit 300 is located on the side of the display unit 300 away from the support plate 200.

[0042] like Figure 1 As shown, one of the bracket 100 and the support plate 200 includes a first pin 10, and the other includes a first switch 20, that is, optionally, the bracket 100 includes the first pin 10, and the support plate 200 includes the first switch 20; another option is that the bracket 100 includes the first switch 20, and the support plate 200 includes the first pin 10.

[0043] like Figure 1 As shown, one of the bracket 100 and the support plate 200 includes a second pin 30, and the other includes a second switch 40, that is, optionally, the bracket 100 includes the second pin 30, and the support plate 200 includes the second switch 40; another option is that the bracket 100 includes the second switch 40, and the support plate 200 includes the second pin 30.

[0044] It can be understood that the first pin 10 and the first switch 20 are arranged in a one-to-one correspondence, and the second pin 30 and the second switch 40 are arranged in a one-to-one correspondence, but the present application does not limit whether one of the bracket 100 and the support plate 200 includes the second pin 30 or the second switch 40 while including the first pin 10. Similarly, the present application does not limit whether one of the bracket 100 and the support plate 200 includes the second pin 30 or the second switch 40 while including the first switch 20.

[0045] Figure 2 FIG. 4 shows a cross-sectional structural diagram of a locking device provided in an embodiment of the present application when the first switch 20 is in an off state and the second switch 40 is in an off state. Figure 2 As shown, when the first switch 20 is in the off state, the first pin 10 is inserted into the first switch 20, and the first switch 20 resists the withdrawal of the first pin 10, so that the first pin 10 cannot be withdrawn; when the second switch 40 is in the off state, the second pin 30 is inserted into the second switch 40, and the second switch 40 resists further insertion of the second pin 30, so that the second pin 30 cannot be further inserted.

[0046] With such arrangement, during the installation and use of the display unit 300, after the flatness of the display surface of the display unit 300 is adjusted, the first switch 20 can be controlled to be in the off state, and the first switch 20 can be used to resist the withdrawal of the inserted first pin 10, thereby preventing the distance between the bracket 100 and the support plate 200 from increasing, and the second switch 40 can be controlled to be in the off state, and the second switch 40 can be used to resist the further insertion of the inserted second pin 30, thereby preventing the distance between the bracket 100 and the support plate 200 from decreasing, that is, keeping the distance between the bracket 100 and the support plate 200 unchanged, and then keeping the flatness of the display surface of the display unit 300 located on the side of the support plate 200 away from the bracket 100 unchanged, thereby improving the display effect.

[0047] Optional, such as Figure 3 As shown, there are at least two support plates 200, so that each support plate 200 carries a display unit 300 on the side away from the bracket 100, and the display surface of the display unit 300 is located on the side of the display unit 300 away from the support plate 200, then the locking device provided in the embodiment of the present application can realize the splicing of at least two display units; and, in the process of splicing at least two display units, the height at which the first pin 10 is locked by the first switch 20 and the height at which the second pin 30 is locked by the second switch 40 can be adjusted, thereby adjusting the flatness of the splicing of the at least two display units; after adjusting the flatness of the splicing of the at least two display units, due to the resistance of the first switch 20 to the withdrawal of the first pin 10 and the resistance of the second switch 40 to the further insertion of the second pin 30, the flatness of the splicing of the at least two display units can also be maintained unchanged, thereby improving the splicing display effect.

[0048] Of course, the support plate 200 may also be one, such as Figure 1 and Figure 2 As shown, in this way, after adjusting the flatness of the display surface of the display unit 300, the flatness of the display surface of the display unit 300 located on the side of the support plate 200 away from the bracket 100 can be kept unchanged, thereby improving the display effect.

[0049] Optional, such as Figure 1 As shown, the first switch 20 includes:

[0050] A first frame body 21, wherein the first frame body 21 is provided with a first through hole K1, wherein the first through hole K1 allows the first pin 10 to enter and exit, wherein the first frame body 21 has a first accommodating space P1, wherein the first through hole K1 is in communication with the first accommodating space P1, and wherein the distance between at least a portion of the inner side walls of the first frame body 21 gradually narrows in a direction toward the first through hole K1;

[0051] The engaging member 22 is received in the first accommodating space P1;

[0052] The first elastic member 23 is received in the first accommodating space P1 and is located at a side of the engaging member 22 away from the first through hole K1 to resist the engaging member 22 .

[0053] For ease of understanding, Figure 4 An exploded view of a first pin 10 and a first switch 20 in a locking device provided in an embodiment of the present application is shown, and a structural diagram of a first frame 21 in the first switch 20 is shown. Figure 5 The cross-sectional structure diagram of the first pin 10 and the first switch 20 in a locking device provided in an embodiment of the present application is shown. Figure 6 for Figure 5 Schematic diagram, combined with Figure 4-Figure 6 As shown, the first frame body 21 is provided with a first through hole K1 , and the first frame body 21 has a first accommodating space P1 . The first through hole K1 is connected to the first accommodating space P1 , so that the first pin 10 can freely pass through the first through hole K1 and enter the first accommodating space P1 .

[0054] Combination Figure 4-Figure 6 As shown, the first accommodating space P1 accommodates the engaging member 22 and the first elastic member 23, and the first elastic member 23 is located on the side of the engaging member 22 away from the first through hole K1, supporting the engaging member 22, that is, the first elastic member 23 is compressed and exerts an elastic force to support the engaging member 22.

[0055] Combination Figure 4-Figure 6 As shown, the distance between at least part of the inner side walls of the first frame 21 gradually narrows in the direction toward the first through hole K1, that is, at least part of the inner side walls of the first frame 21 converge toward the first through hole K1, so that at least part of the first accommodating space P1 narrows toward the first through hole K1, or in other words, at least part of the inner side walls of the first frame 21 are tapered and narrowed toward the first through hole K1. In this way, when the first switch 20 is in the off state, the first pin 10 passes through the first through hole K1 and the engaging member 22 to enter the first accommodating space P1, and the engaging member 22 is accommodated in the space defined by the first pin 10, the first frame 21 (specifically the inner side wall of the first frame 21) and the first elastic member 23 to resist the first pin 10 from being pulled out.

[0056] It is understandable that if Figure 6As shown, the more the first pin 10 is pulled out with force, the more the engaging member 22 is driven to move toward the angle between the first pin 10 and the inner side wall of the first frame 21, and at least part of the inner side wall of the first frame 21 gathers toward the first through hole K1, so that at least part of the first accommodating space P1 is narrowed toward the first through hole K1, so that the engaging member 22 is more inclined to move toward the angle between the first pin 10 and the inner side wall of the first frame 21, the greater the squeezing force of the engaging member 22 on the first pin 10, and the greater the squeezing force of the engaging member 22 on the inner side wall of the first frame 21, and thus the greater the friction resistance between the engaging member 22 and the first pin 10 and between the engaging member 22 and the inner side wall of the first frame 21, which prevents the first pin 10 from being pulled out. However, the first pin 10 can be further inserted into the first switch 20.

[0057] Optional, such as Figure 6 As shown, part of the inner side wall of the first frame body 21 may converge toward the first through hole K1, so that part of the first accommodation space P1 is narrowed toward the first through hole K1. Alternatively, the entire inner side wall of the first frame body 21 may converge toward the first through hole K1, so that the entire first accommodation space P1 is narrowed toward the first through hole K1, and the present application does not limit this.

[0058] Optional, such as Figure 6 As shown, at least part of the inner side wall of the first frame 21 is gathered toward the first through hole K1 in an inclined manner, so that the inner side wall of the first frame 21 includes a first inclined surface S1 that gradually narrows in the direction toward the first through hole K1, so that when the first switch 20 is in the off state, the angle between the first pin 10 passing through the engaging member 22 and the first inclined surface S1 is an acute angle, and the engaging member 22 is accommodated in the space defined by the first pin 10, the first inclined surface S1 and the first elastic member 23. When the first pin 10 is pulled out with force, the engaging member 22 tends to move toward the angle between the first pin 10 and the first inclined surface S1, which is more conducive to resisting the first pin 10 from being pulled out. Alternatively, at least part of the inner side wall of the first frame 21 can also be gathered toward the first through hole K1 in the form of a concave surface, a stepped surface, etc., and the present application does not limit this.

[0059] Optionally, the first elastic member 23 may be a spring.

[0060] Optionally, the engaging member 22 is ferromagnetic, so that a magnetic field can be applied to the first switch 20 to put the first switch 20 in an on state. When the first switch 20 is in the on state, the engaging member 22 is subjected to a magnetic field force in the magnetic field due to its ferromagnetism, so that the engaging member 22 presses against the first elastic member 23, so that the engaging member 22 no longer tightly squeezes the first pin 10, and even separates from the first pin 10, allowing the first pin 10 to move in and out freely.

[0061] Optionally, the engaging member 22 includes two balls; when the first switch 20 is in the pre-off state, such as Figure 1 As shown, the first pin 10 does not pass through the engaging member 22, and the two balls of the engaging member 22 are in contact with each other; when the first switch 20 is in the off state, as shown in FIG. Figure 2 , Figure 5-Figure 6 As shown, the first pin 10 passes through the first through hole K1 and the engaging member 22 to enter the first accommodating space P1 , and two balls of the engaging member 22 are located on both sides of the first pin 10 and abut against the first pin 10 .

[0062] It is understandable that, alternatively, the engaging member 22 may also include two cylinders; when the first switch 20 is in the pre-off state, refer to Figure 1 As shown, the first pin 10 does not pass through the engaging member 22, and the two cylinders of the engaging member 22 are in contact with each other; when the first switch 20 is in the off state, refer to Figure 2 , Figure 5-Figure 6 As shown, the first pin 10 passes through the first through hole K1 and the engaging member 22 to enter the first accommodating space P1 , and two cylinders of the engaging member 22 are located on both sides of the first pin 10 and abut against the first pin 10 .

[0063] In summary, the first switch 20 is in a normally closed state, including a pre-closed state and a closed state. When the first switch 20 is in the pre-closed state, the two balls or cylinders of the engaging member 22 fit together, and the first pin 10 does not pass through the engaging member 22. However, at this time, the engaging member 22 allows the first pin 10 to pass through, that is, the first pin 10 can pass through the engaging member 22; when the first switch 20 is in the closed state, the first pin 10 passes through the first through hole K1 and the engaging member 22 to enter the first accommodating space P1. The two balls or cylinders of the engaging member 22 are located on both sides of the first pin 10 and abut against the first pin 10 to resist the withdrawal of the first pin 10. However, at this time, the first pin 10 can be further inserted. A magnetic field can be applied to the first switch 20 to turn the first switch 20 from the off state to the on state, and the engaging member 22 abuts against the first elastic member 23. The engaging member 22 is no longer restricted in the space defined by the first pin 10, the first slope S1 and the first elastic member 23, allowing the first pin 10 to move in and out freely.

[0064] Optional, such as Figure 1-Figure 2 , Figure 4-Figure 6 As shown, the first switch 20 may further include a baffle 24, which is accommodated in the first accommodation space P1 and located between the engaging member 22 and the first elastic member 23, and the first elastic member 23 abuts against the engaging member 22 through the baffle 24; the baffle 24 is provided with a second through hole K2, which corresponds to the first through hole K1, allowing the first pin 10 to enter and exit. It can be understood that the first pin 10 must pass through the first through hole K1 and the engaging member 22, and may pass through the second through hole K2, or may not pass through the second through hole K2, or may be inserted into the second through hole K2, depending on the specific situation.

[0065] Further optional, such as Figure 6 As shown, the inner side wall of the first frame body 21 includes a first inclined surface S1 that gradually narrows in the direction toward the first through hole K1; the surface of the baffle 24 that abuts against the engaging member 22 includes a second inclined surface S2, and the second inclined surface S2 and the first inclined surface S1 are arranged opposite to each other; in this way, when the first switch 20 is in the off state, the first pin 10 passing through the engaging member 22 has an acute angle with the first inclined surface S1, and also has an acute angle with the second inclined surface S2, and the engaging member 22 is accommodated in the space defined by the first pin 10, the first inclined surface S1 and the second inclined surface S2, so as to resist the first pin 10 from being pulled out.

[0066] Figure 7 FIG. 2 shows the force applied to the ball / cylinder in the engaging member 22 when the first switch 20 is in the off state. Figure 7 As shown, the first pin 10 has a resisting pressure F1 on the ball / cylinder in the engaging member 22, the first inclined surface S1 of the inner wall of the first frame 21 has a resisting pressure F2 on the ball / cylinder in the engaging member 22, and the second inclined surface S2 of the baffle plate 24 has a resisting supporting force F3 on the ball / cylinder in the engaging member 22 under the action of the first elastic member 23. These three forces and gravity keep the ball / cylinder in the engaging member 22 in force balance.

[0067] Figure 8 FIG. 2 shows the force applied to the ball / cylinder in the engaging member 22 when the first switch 20 is in the off state and the first pin 10 is pulled out with force. Figure 8 As shown in the figure, when the first switch 20 is in the off state and the first pin 10 is forcibly pulled out, the first pin 10 has a tendency to move outward relative to the ball / cylinder in the engaging member 22, and the ball / cylinder in the engaging member 22 generates a friction force on the first pin 10. At the same time, the ball / cylinder in the engaging member 22 is also subjected to the friction force F4 generated by the first pin 10, driving the ball / cylinder in the engaging member 22, so that the ball / cylinder in the engaging member 22 has a tendency to roll along the first inclined surface S1 toward the first through hole K1, thereby causing the ball / cylinder in the engaging member 22 to roll along the first inclined surface S1 toward the first through hole K1. The column is also subjected to the friction force F5 generated by the first inclined surface S1; and, the harder the first pin 10 is pulled out, the more tightly the ball / cylinder in the engaging part 22 is confined in the space defined by the first pin 10, the first inclined surface S1 and the second inclined surface S2, so that the pressure F1 between the ball / cylinder in the engaging part 22 and the first pin 10 and the pressure F2 between the ball / cylinder in the engaging part 22 and the first inclined surface S1 both become larger, thereby increasing the friction resistance of the ball / cylinder in the engaging part 22 to the first pin 10, thereby resisting the first pin 10 from being pulled out.

[0068] It can be understood that due to the supporting effect of the second inclined surface S2 of the baffle plate 24 on the engaging member 22, when the first pin 10 is forcibly pulled out, the extrusion force between the first pin 10 and the engaging member 22 and the extrusion force between the engaging member 22 and the first inclined surface S1 are further increased, thereby further increasing the obstructive friction between the first pin 10 and the engaging member 22 and between the engaging member 22 and the first inclined surface S1, which can further resist the first pin 10 from being pulled out.

[0069] Optionally, when the first switch 20 is in the off state, the bisector of the angle between the first pin 10 and the first slope S1 passing through the engaging member 22 is perpendicular to the second slope S2, so that when the first pin 10 is pulled out with force, the first pin 10 can be further resisted from being pulled out.

[0070] Optionally, at least one of the engaging member 22 and the baffle plate 24 is ferromagnetic, that is, the engaging member 22 is ferromagnetic, or the baffle plate 24 is ferromagnetic, or both the engaging member 22 and the baffle plate 24 are ferromagnetic; in this way, a magnetic field can be applied to the first switch 20 to put the first switch 20 in an on state. When the first switch 20 is in the on state, the engaging member 22 or the baffle plate 24 is subjected to a magnetic field force in the magnetic field due to its ferromagnetism, so that the engaging member 22 and the baffle plate 24 jointly resist the first elastic member 23, so that the engaging member 22 no longer tightly squeezes the first pin 10, and even separates from the first pin 10, allowing the first pin 10 to move in and out freely.

[0071] Figure 9a-9d Schematic diagrams showing several states of the process in which the first pin 10 is inserted into the first switch 20 and locked by the first switch 20. Figure 9a As shown, the first pin 10 has not yet been inserted into the first switch 20, the first switch 20 is in a pre-closed state, and the two balls / cylinders of the engaging member 22 in the first switch 20 are in contact with each other; Figure 9b As shown, the first pin 10 is inserted into the first through hole K1, but has not passed through the engaging member 22, and the first switch 20 is still in the pre-closing state; Fig.9c As shown, the first pin 10 is passing through the engaging member 22, and the engaging member 22 is just about to exert a force on the first pin 10 to resist withdrawal; Figure 9d As shown, the first pin 10 passes through the locking member 22 , and the locking member 22 can prevent the first pin 10 from being withdrawn.

[0072] Optional, such as Figure 1 As shown, the second switch 40 includes:

[0073] A second frame body 41, wherein the second frame body 41 is provided with a third through hole K3, wherein the third through hole K3 allows the second pin 30 to enter and exit, wherein the second frame body 41 has a second accommodating space P2, wherein the third through hole K3 is in communication with the second accommodating space P2, and wherein the inner side wall of the second frame body 41 includes a third inclined surface S3 which is gradually narrowed in a direction away from the third through hole K3;

[0074] The clamping member 42 is received in the second accommodation space P2, and the clamping member 42 includes at least two clamping portions 420, each of which is disposed around the third through hole K3;

[0075] At least two sets of elastic components 43 are accommodated in the second accommodating space P2. The elastic components 43 and the clamping parts 420 are connected one by one. The clamping parts 420 are connected to the second frame 41 through the elastic components 43 and are held on the third inclined surface S3 by the elastic components 43.

[0076] It can be understood that the inner wall of the second frame body 41 includes a third inclined surface S3 that gradually narrows in a direction away from the third through hole K3. The inner wall of the second frame body 41 as a whole gradually narrows in a direction away from the third through hole K3 to form the third inclined surface S3, or part of the inner wall of the second frame body 41 gradually narrows in a direction away from the third through hole K3 to form the third inclined surface S3, depending on the specific circumstances.

[0077] It can also be understood that the clamping portion 420 is connected to the second frame 41 through the elastic component 43 and is held on the third slope S3 by the elastic component 43. In this way, the clamping portion 420 is subjected to the elastic force of the elastic component 43, the supporting force of the third slope S3 and gravity, thereby maintaining force balance.

[0078] Thus, when the second switch 40 is in the off state, Figure 2 As shown, the second pin 30 enters the second accommodating space P2 through the third through hole K3 and is clamped by each clamping part 420. The clamping part 420 is accommodated in the space defined by the second pin 30, the third inclined surface S3 and the correspondingly connected elastic component 43 to resist further insertion of the second pin 30.

[0079] When the second switch 40 is in the off state, the elastic component 43 can be set to have an elastic force on the connected clamping part 420 in the direction away from the third through hole K3, so that if the second pin 30 is to be further inserted, the greater the squeezing force between the second pin 30 and each clamping part 420, the greater the friction resistance to the second pin 30, which hinders the further insertion of the second pin 30. However, when the second switch 40 is in the off state, the second pin 30 can be pulled out by force.

[0080] Optional, such as Figure 1As shown, the clamping portion 420 has a fourth inclined surface S4, which abuts against the third inclined surface S3, that is, the clamping portion 420 abuts against the third inclined surface S3 through the fourth inclined surface S4. In this way, the clamping portion 420 is similar to a wedge block, and the clamping portion 420 is placed on the third inclined surface S3 more stably.

[0081] In order to facilitate understanding of the connection relationship between the clamping portion 420 and the elastic component 43, Fig.10 Shows Figure 1 Schematic diagram of the AA' section, combined with Figure 1 and Fig.10 As shown, the second frame body 41 includes a top 411 and a side wall 412, and the top 411 is provided with a third through hole K3; the elastic component 43 includes a first sub-elastic member 431, a second sub-elastic member 432 and a third sub-elastic member 433; wherein the first sub-elastic member 431 is connected between the top 411 of the second frame body 41 and the clamping portion 420; the second sub-elastic member 432 is connected between the side wall 412 of the second frame body 41 and the clamping portion 420, and the third sub-elastic member 433 is connected between the side wall 412 of the second frame body 41 and the clamping portion 420, and the second sub-elastic member 432 and the third sub-elastic member 433 are located on opposite sides of the clamping portion 420.

[0082] Optionally, the first sub-elastic member 431 , the second sub-elastic member 432 , and the third sub-elastic member 433 may be springs.

[0083] In practical applications, the first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433 can be set in a compressed state to have an elastic force to resist the connected clamping portion 420; it is conceivable that since the first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433 are located in the same plane, the connected clamping portion 420 will pop out in a direction perpendicular to the plane where the first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433 are located. To this end, a third inclined surface S3 is set on the inner side wall of the second frame body 41 in a direction away from the third through hole K3, and the clamping portion 420 is set to have a fourth inclined surface S4, and the fourth inclined surface S4 is resisted against the third inclined surface S3, so that the clamping portion 420 is resisted on the third inclined surface S3 and the force is balanced.

[0084] Fig.11 FIG. 4 shows a top view of a second switch 40 in the locking device provided in an embodiment of the present application. Fig.11 As shown, the clamping member 42 includes two clamping portions 420 , and the two clamping portions 420 are located at two opposite sides of the third through hole K3 and surround the third through hole K3 .

[0085] Fig.12 FIG. 4 shows a top view of another second switch 40 in the locking device provided in an embodiment of the present application. Fig.12 As shown, the clamping member 42 includes three clamping portions 420 , and the three clamping portions 420 surround the third through hole K3 .

[0086] It can be understood that the clamping member 42 may include four or even more clamping portions 420 , and each clamping portion 420 may be disposed around the third through hole K3 .

[0087] like Fig.11 and Fig.12 As shown, the clamping portion 420 has a clamping surface M1; when the second switch 40 is in the off state, the clamping surface M1 of the clamping portion 420 abuts against the second pin 30, that is, the clamping surface M1 of the clamping portion 420 contacts the second pin 30. Optionally, as Fig.11 As shown, the clamping surface M1 of the clamping portion 420 is a plane. Fig.12 As shown, the clamping surface M1 of the clamping portion 420 is a curved surface so as to clamp the second pin 30 more tightly, enhance the clamping friction between the clamping portion 420 and the second pin 30 , and resist further insertion of the second pin 30 .

[0088] Further optionally, the clamping surface M1 of the clamping portion 420 has threads, that is, the clamping surface M1 of the clamping portion 420 is a threaded tooth surface, which can further enhance the clamping friction between the clamping portion 420 and the second pin 30 and resist further insertion of the second pin 30.

[0089] Optionally, at least part of the clamping portion 420 is magnetic, and the magnetic field of the clamping portion 420 has a component at least in the direction in which the bracket 100 and the support plate 200 are relatively set. In this way, when the magnetic field is applied to the second switch 40, the clamping portion 420 can be subjected to the magnetic field force along the direction in which the bracket 100 and the support plate 200 are relatively set, so that the clamping portion 420 can disperse or gather along the third inclined surface S3, thereby adjusting the second switch 40 to be in different states.

[0090] The various states of the second switch 40 are described below.

[0091] When the second switch 40 is in the on state, Figure 1 and Fig.13a As shown, each clamping portion 420 is held against the third inclined surface S3 by the connected first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433, allowing the second pin 30 to freely enter and exit; that is, the second pin 30 can enter the second accommodating space P2 through the third through hole K3 and freely enter and exit the middle of each clamping portion 420. Among them, the first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433 are all in a compressed state, and have an elastic force to resist the connected clamping portion 420, as shown in FIG. Fig.13a Indicated by the arrow.

[0092] By applying a magnetic field to the second switch 40, the second switch 40 can be switched from the on state to the intermediate state. Fig.13b As shown, since at least part of the clamping portion 420 is magnetic, and the magnetic field of the clamping portion 420 has a component at least in the direction in which the bracket 100 and the support plate 200 are relatively arranged, after the magnetic field is applied to the second switch 40, each clamping portion 420 can be subjected to the magnetic field force in the direction in which the bracket 100 and the support plate 200 are relatively arranged, so that each clamping portion 420 presses against the first sub-elastic member 431 upward along the third inclined surface S3, the first sub-elastic member 431 is compressed more strongly, and the first sub-elastic member 431 accumulates elastic potential energy; and, since each clamping portion 420 presses against the first sub-elastic member 431 upward along the third inclined surface S3, each clamping portion 420 is relatively dispersed, allowing the second pin 30 to freely enter and exit.

[0093] Understandably, compared Fig.13a and Fig.13b As shown, when the second switch 40 is in the intermediate state, compared with when the second switch 40 is in the open state, the second sub-elastic member 432 and the third sub-elastic member 433 are relatively elongated, and the elastic force of the first sub-elastic member 431 on the clamping portion 420 becomes larger.

[0094] After the second pin 30 is inserted to a moderate height of the second switch 40, the magnetic field is quickly removed, and the elastic potential energy accumulated in the first sub-elastic member 431 is converted into the kinetic energy of the clamping portion 420, so that each clamping portion 420 is quickly gathered along the third inclined surface S3 under the elastic force of the connected first sub-elastic member 431, and the second pin 30 is clamped, so that the second switch 40 is in the off state, as shown in FIG. Fig.13c As shown, when the second switch 40 is in the off state, each clamping portion 420 clamps the second pin 30, and each clamping portion 420 is accommodated in the space defined by the second pin 30, the third inclined surface S3, and the correspondingly connected first sub-elastic member 431, the second sub-elastic member 432, and the third sub-elastic member 433, thereby resisting further insertion of the second pin 30.

[0095] When the second switch 40 is in the off state, Fig.13c As shown, the first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433 are still in a compressed state, and have an elastic force to resist the clamping portion 420, so that the clamping portion 420 is resisted between the second pin 30 and the third inclined surface S3. When the second pin 30 is to be further inserted, due to the elastic force of the first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433 on the clamping portion 420, the greater the extrusion force between the second pin 30 and each clamping portion 420, the greater the frictional resistance to the second pin 30, which hinders the second pin 30 from being further inserted.

[0096] It can be understood that after the magnetic field is applied to the second switch 40 again, each clamping part 420 is subjected to the magnetic field force in the direction in which the bracket 100 and the support plate 200 are relatively arranged, so that each clamping part 420 presses upward against the first sub-elastic member 431 along the third inclined surface S3, thereby making the second switch 40 change from the closed state to the intermediate state; after the second pin 30 is pulled out, the magnetic field is slowly removed, although the elastic potential energy accumulated in the first sub-elastic member 431 will also be converted into the kinetic energy of the clamping part 420, but because the magnetic field is withdrawn slowly, each clamping part 420 slowly returns to the equilibrium position where the second switch 40 is in the open state.

[0097] Through the above analysis, it can be known that the first switch 20 controlling the first pin 10 is a normally closed switch, which can be opened under the action of a magnetic field. When the first switch 20 is in the closed state, it has the effect of resisting the withdrawal of the inserted first pin, so as to resist the increase of the distance between the bracket 100 and the support plate 200 carrying the display unit 300. The second switch 40 controlling the second pin 30 is a bistable switch, which can be switched from the open state to the closed state by applying a magnetic field once and withdrawing, and can be switched from the closed state to the open state by applying a magnetic field again and withdrawing. When the second switch 40 is in the closed state, it has the effect of resisting the further insertion of the inserted second pin 30, so as to resist the reduction of the distance between the bracket 100 and the support plate 200 carrying the display unit 300.

[0098] Thus, the first pin 10 and the first switch 20 form a first damping group R1 to resist the increase of the distance between the bracket 100 and the support plate 200 carrying the display unit 300, and the second pin 30 and the fourth switch 40 form a second damping group R2 to resist the decrease of the distance between the bracket 100 and the support plate 200 carrying the display unit 300. After the flatness of the display surface of the display unit 300 is adjusted, the distance between the bracket 100 and the support plate 200 can be kept unchanged by the first damping group R1 and the second damping group R2, thereby maintaining the flatness of the display surface of the display unit 300 located on the side of the support plate 200 away from the bracket 100, thereby improving the display effect.

[0099] It can be understood that, between the bracket 100 and the support plate 200, there can be one or more first damping groups R1, and there can also be one or more second damping groups R2, which will be described below in detail with reference to embodiments.

[0100] Optional, such as Fig.14 and Fig.15 As shown, when a single first damping group R1 corresponds to a second damping group array composed of multiple second damping groups R2, the distance between the geometric center of the single first damping group R1 and the geometric center of the corresponding second damping group array is less than the first preset range, that is, the geometric center of the single first damping group R1 is close to the geometric center of the corresponding second damping group array, and it is optimal when they are almost overlapping.

[0101] Another option, such as Fig.16 and Fig.17 As shown, when two first damping groups R1 correspond to a second damping group array composed of multiple second damping groups R2, the distance between the center of the line connecting the geometric centers of the two first damping groups R1 and the geometric center of the corresponding second damping group array is less than the second preset range, that is, the center of the line connecting the geometric centers of the two first damping groups R1 is close to the geometric center of the corresponding second damping group array, and it is optimal when they are almost overlapping.

[0102] Another option is, Fig.18 As shown, when a first damping group array composed of multiple first damping groups R1 corresponds to a second damping group array composed of multiple second damping groups R2, the distance between the geometric center of the first damping group array and the geometric center of the corresponding second damping group array is less than the third preset range, that is, the geometric center of the first damping group array is close to the geometric center of the corresponding second damping group array, and it is optimal when they are almost overlapping.

[0103] Another option is Fig.19 As shown, when a first damping group array composed of multiple first damping groups R1 corresponds to a single second damping group, the distance between the geometric center of the first damping group array and the geometric center of the corresponding single second damping group R2 is less than the fourth preset range, that is, the geometric center of the first damping group array is close to the geometric center of the corresponding single second damping group R2, and it is optimal when they are almost overlapping.

[0104] Another option is, Fig. 20 and Fig.21 As shown, when a first damping group array composed of multiple first damping groups R1 corresponds to two second damping groups R2, the distance between the geometric center of the first damping group array and the center of the line connecting the geometric centers of the corresponding two second damping groups R2 is less than the fifth preset range, that is, the geometric center of the first damping group array is close to the geometric center of the corresponding two second damping groups R2, and it is optimal when they are almost overlapping.

[0105] The above-mentioned first preset range, second preset range, third preset range, fourth preset range and fifth preset range can be set according to actual conditions and can be specific distance range values, or can be set with reference to the interval between the first pins 10, the interval between the second pins 30, and the interval between the first pins 10 and the second pins 30. For example, when there are multiple first pins 10, it can be set to be less than half of the minimum interval between the first pins 10.

[0106] The above methods are all intended to make the point where the first damping group R1 resists the increase in the distance between the bracket 100 and the support plate 200 close to the point where the second damping group R2 resists the decrease in the distance between the bracket 100 and the support plate 200, thereby maintaining the flatness of the display surface of the display unit 300 carried by the support plate 200 unchanged.

[0107] It should be noted that Figure 14-Figure 21 Only limited cases are listed in which the geometric center of the first damping group R1 or the first damping group array formed by the first damping group R1 is almost coincident with the geometric center of the second damping group array formed by the second damping group R1 or the second damping group R2. It can be understood that many cases in which the geometric center of the first damping group R1 or the first damping group array formed by the first damping group R1 is almost coincident with the geometric center of the second damping group array formed by the second damping group R1 or the second damping group R2 can be derived from this, and they are not listed one by one.

[0108] It should also be noted that Figure 14-Figure 21 The locking device is merely shown as a rectangle and is not intended to limit the shape of the locking device.

[0109] Optional, such as Fig. 22 As shown, the first pin 10 and the second pin 30 can also be made into an integrally formed structure, and the first switch 20 and the second switch 40 are stacked along the direction in which the bracket 100 and the support plate 200 are relatively arranged. In this way, the integrally formed pin can be inserted into the second switch 40 and the first switch 20 successively, so that the first switch 20 has a function of resisting the integrally formed pin from being pulled out, and the second switch 40 has a function of resisting the integrally formed pin from being further inserted. In this way, the geometric centers of the first damping group R1 formed by the first pin 10 and the first switch 20 coincide with the geometric centers of the second damping group R2 formed by the second pin 30 and the second switch 40, thereby simplifying the structural design.

[0110] Accordingly, the embodiment of the present application further provides a display device, such as Figure 2 As shown, the display device 500 includes the locking device 400 provided in any of the above embodiments, that is, the display device 500 includes a bracket 100, a support plate 200, and a first pin 10, a first switch 20, a third pin 30, and a second switch 40 located between the bracket 100 and the support plate 200; the display device 500 also includes a display panel, that is, the aforementioned display unit 300, which is located on the side of the support plate 200 away from the bracket 100 and is used to display images. Since the locking device 400 can keep the distance between the bracket 100 and the support plate 200 unchanged, and thus keep the flatness of the display surface of the display panel located on the side of the support plate 200 away from the bracket 100 unchanged, the display effect of the display device can be improved.

[0111] Optionally, there may be two or more support plates 200, and the display device 500 may be a display device formed by splicing two or more display panels.

[0112] Based on the same inventive concept, the embodiment of the present application further provides a splicing method, which includes:

[0113] S100: Fig.23a As shown, a plurality of display units 300 are respectively attached to their corresponding support plates 200 , and the display surface of the display unit 300 is located at the side of the display unit 300 away from the support plate 200 .

[0114] S200: Figure 23a-23c , from the side of the support plate 200 away from the display unit 300, each support plate 200 is detachably connected to the bracket 100;

[0115] Among them, one of the bracket 100 and the support plate 200 includes a first pin 10, and the other includes a first switch 20. By inserting the first pin 10 into the first switch 20 and controlling the first switch 20 to be in the off state, the first switch 20 locks the first pin 10 and resists the first pin 10 from being pulled out; one of the bracket 100 and the support plate 200 includes a second pin 30, and the other includes a second switch 40. By inserting the second pin 30 into the second switch 40 and controlling the second switch 40 to be in the off state, the second switch 40 locks the second pin 30 and resists further insertion of the second pin 30.

[0116] As is known from the foregoing, the first switch 20 is in a normally closed state. Therefore, by directly inserting the first pin 10 into the first switch 20 , the first switch 20 can be controlled to be in an off state, so that the first switch 20 locks the first pin 10 and resists the first pin 10 from being withdrawn.

[0117] Specifically, when the first switch 20 is in the pre-off state, Fig.23a As shown, the first pin 10 is not inserted into the first switch 20, and the two balls / cylinders of the engaging member 22 in the first switch 20 are in contact with each other; Figure 23b and Fig.23c As shown, the first pin 10 is inserted into the first switch 20, and the first switch 20 is in the off state. The first switch 20 locks the first pin 10 to prevent the first pin 10 from being withdrawn.

[0118] Optionally, the process of inserting the second pin 30 into the second switch 40 and controlling the second switch 40 to be in an off state so that the second switch 40 locks the second pin 30 and resisting further insertion of the second pin 30 includes:

[0119] S210: Fig.23a and Figure 23bAs shown, a magnetic field is applied to the second switch 40 to switch the second switch 40 from the open state to the intermediate state. When the second switch 40 is in the open state and / or the intermediate state, the second pin 30 is inserted into the second switch 40.

[0120] S220: Fig.23c As shown, the magnetic field is removed, so that the second switch 40 is switched from the intermediate state to the off state, the second pin 30 is locked, and further insertion of the second pin 30 is resisted.

[0121] It should be noted that in step S220, the magnetic field is quickly removed so that the elastic potential energy accumulated in the first sub-elastic member 431 is converted into the kinetic energy of the clamping portion 420, so that each clamping portion 420 is quickly gathered along the third inclined surface S3 under the elastic force of the connected first sub-elastic member 431 to clamp the second pin 30. Each clamping portion 420 is accommodated in the space defined by the second pin 30, the third inclined surface S3 and the correspondingly connected first sub-elastic member 431, the second sub-elastic member 432 and the third sub-elastic member 433, thereby resisting further insertion of the second pin 30.

[0122] S300: Fig.23d As shown, each display unit 300 is placed on the same platform 600 from the display surface side of the display unit 300 .

[0123] It is understandable that step S200 is only to detachably connect the support plates 200 with the display units 300 attached thereto to the bracket 100 through the first pin 10 and the first switch 20 and the second pin 30 and the second switch 40, but the display surfaces of the display units 300 may not be in the same plane. Fig.23d As shown, from the display surface side of the display unit 300, each display unit 300 is placed on the same platform 600, and then there may be a step difference in the splicing of different display units 300. This step difference may be caused by the different thicknesses of different display units 300, or by the different distances between the support plate 200 and the bracket 100, or by the tilt of the display unit 300.

[0124] S400: Fig.23e As shown, by adjusting the locking height of the first switch 20 to the first pin 10 between each support plate 200 and the bracket 100, and the locking height of the second switch 40 to the second pin 30, the display surface of each display unit 300 is made to fit with the platform 600, thereby completing the splicing of each display unit 300.

[0125] As is known from the above, by applying a magnetic field to the first switch 20, the first switch 20 is in an open state, so that the first pin 10 can freely move in and out to adjust the height; and, by applying a magnetic field to the second switch 40, the second switch 40 is in an open state, so that the second pin 30 can freely move in and out to adjust the height; after each display unit 300 is attached to the platform 600 under the action of gravity, the magnetic field is removed, and the first pin 10 is locked by the first switch 20, and the second pin 30 is locked by the second switch 40, so that the splicing of each display unit 300 is completed, and the display surface of each display unit 300 is as flat as the surface of the platform 600. In addition, in the subsequent use process, since the distance between the support plate 200 and the bracket 100 has been locked by the first pin 10 and the first switch 20 and the second pin 30 and the second switch 40, the display surface of each display unit 300 remains flat.

[0126] Optionally, the process of adjusting the locking height of the first switch 20 to the first pin 10 between the support plate 200 and the bracket 100 includes:

[0127] S10: applying a magnetic field to the first switch 20 to switch the first switch 20 from an off state to an on state, allowing the first pin 10 to move in and out freely;

[0128] S20: After the display unit 300 is attached to the platform 600 under the action of gravity, the magnetic field is removed to switch the first switch 20 from the on state to the off state, thereby locking the first pin 10 and preventing the first pin 10 from being withdrawn.

[0129] Optionally, the process of adjusting the locking height of the second switch 40 to the second pin 30 between the support plate 200 and the bracket 100 includes:

[0130] S30: applying a magnetic field to the second switch 40, and then removing the magnetic field, so that the second switch 40 is switched from the off state to the on state, allowing the second pin 30 to move in and out freely;

[0131] S40: After the display unit 300 is attached to the platform under the action of gravity, a magnetic field is applied to the second switch 40, and then the magnetic field is removed, so that the second switch 40 is converted from the open state to the closed state via the intermediate state, the second pin 30 is locked, and further insertion of the second pin 30 is resisted.

[0132] Optionally, a magnetic field may be applied to the first switch 20 and the second switch 40 via the platform 600 , that is, the platform 600 may be an electromagnetic platform.

[0133] It should be noted that, in the present application, the height of the first pin 10 inserted into the first switch 20 is the height of the first switch 20 locking the first pin 10. The deeper the first pin 10 is inserted into the first switch 20, the higher the height of the first switch 20 locking the first pin 10, and the closer the distance between the support plate 200 and the bracket 100; the shallower the first pin 10 is inserted into the first switch 20, the lower the height of the first switch 20 locking the first pin 10, and the farther the distance between the support plate 200 and the bracket 100.

[0134] Similarly, the height of the second pin 30 inserted into the second switch 40 is the locking height of the second switch 40 to the second pin 30. The deeper the second pin 30 is inserted into the second switch 40, the greater the locking height of the second switch 40 to the second pin 30, and the closer the distance between the support plate 200 and the bracket 100; the shallower the second pin 30 is inserted into the second switch 40, the lower the locking height of the second switch 40 to the second pin 30, and the farther the distance between the support plate 200 and the bracket 100.

[0135] It should be emphasized that the locking height of the first switch 20 to the first pin 10 can be adjusted arbitrarily, and the locking height of the second switch 40 to the second pin 10 can also be adjusted arbitrarily, that is, the distance between the support plate 200 and the bracket 100 can be adjusted arbitrarily, and the flatness difference of the splicing of the display unit 300 is generally within 1 mm, so that the display unit 300 can be fully adjusted to eliminate the flatness difference of the splicing.

[0136] The various parts in this manual are described in a combination of parallel and progressive ways. Each part focuses on the differences from other parts, and the same or similar parts between the various parts can be referenced to each other.

[0137] With respect to the above description of the disclosed embodiments, the features described in the embodiments in this specification may be replaced or combined with each other, so that professionals in the field can implement or use the present application. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locking device, characterized in that: include: A bracket and a support plate are arranged opposite to each other, wherein a side of the support plate facing away from the bracket is used for carrying a display unit; One of the bracket and the support plate includes a first pin, and the other includes a first switch, when the first switch is in an off state, the first pin is inserted into the first switch, and the first switch resists the first pin from being withdrawn; One of the bracket and the support plate includes a second pin, and the other includes a second switch. When the second switch is in an off state, the second pin is inserted into the second switch, and the second switch resists further insertion of the second pin.

2. The locking device according to claim 1, characterized in that: There are at least two support plates.

3. The locking device according to claim 1, characterized in that: The first switch comprises: A first frame body, wherein the first frame body is provided with a first through hole, the first through hole allowing the first pin to enter and exit, the first frame body having a first accommodating space, the first through hole being in communication with the first accommodating space, and the distance between at least part of the inner side walls of the first frame body gradually narrows in a direction toward the first through hole; A clamping member, the clamping member is accommodated in the first accommodating space; A first elastic member, the first elastic member is accommodated in the first accommodating space, is located at a side of the engaging member away from the first through hole, and abuts against the engaging member; When the first switch is in the off state, the first pin passes through the engaging member and enters the first accommodating space. The engaging member is accommodated in the space defined by the first pin, the first frame and the first elastic member to resist the first pin from being withdrawn.

4. The locking device according to claim 3, characterized in that: The inner side wall of the first frame body comprises a first inclined surface which gradually narrows in a direction toward the first through hole; When the first switch is in the off state, the angle between the first pin passing through the engaging member and the first inclined surface is acute, and the engaging member is accommodated in the space defined by the first pin, the first inclined surface and the first elastic member to resist the first pin from being withdrawn.

5. The locking device according to claim 4, characterized in that: The engaging member has ferromagnetism; When the first switch is in an on state, the engaging member abuts against the first elastic member, allowing the first pin to move in and out freely.

6. The locking device according to claim 3, characterized in that: The first switch further comprises: a baffle, the baffle being received in the first accommodating space and being located between the engaging member and the first elastic member, wherein the first elastic member abuts against the engaging member through the baffle; The baffle plate is provided with a second through hole, which corresponds to the first through hole and allows the first pin to enter and exit.

7. The locking device according to claim 6, characterized in that: The inner side wall of the first frame body comprises a first inclined surface which gradually narrows in a direction toward the first through hole; The surface of the baffle plate abutting against the engaging member comprises a second inclined surface, and the second inclined surface is arranged opposite to the first inclined surface; When the first switch is in the off state, the first pin passing through the engaging member has an acute angle with the first inclined surface, and also has an acute angle with the second inclined surface. The engaging member is accommodated in the space defined by the first pin, the first inclined surface and the second inclined surface to resist the first pin from being pulled out.

8. The locking device according to claim 7, characterized in that: When the first switch is in the off state, the bisector of the angle between the first pin of the engaging member and the first inclined surface is perpendicular to the second inclined surface.

9. The locking device according to claim 6, characterized in that: At least one of the engaging member and the baffle is ferromagnetic; When the first switch is in an open state, the engaging member and the blocking plate abut against the first elastic member, allowing the first pin to freely move in and out.

10. The locking device according to any one of claims 3 to 9, characterized in that: The engaging member includes two balls; when the first switch is in a pre-closed state, the first pin does not pass through the engaging member, and the two balls fit together; when the first switch is in a closed state, the first pin passes through the engaging member and enters the first accommodating space, and the two balls are located on both sides of the first pin and abut against the first pin; Alternatively, the engaging member includes two cylinders; when the first switch is in a pre-closing state, the first pin does not pass through the engaging member, and the side walls of the two cylinders are in contact with each other; when the first switch is in a closing state, the first pin passes through the engaging member and enters the first accommodating space, the two cylinders are located on both sides of the first pin, and the side walls of the two cylinders are against the first pin.

11. The locking device according to claim 1, characterized in that: The second switch comprises: a second frame body, wherein the second frame body is provided with a third through hole, the third through hole allowing the second pin to enter and exit, the second frame body having a second accommodating space, the third through hole communicating with the second accommodating space, and an inner side wall of the second frame body comprising a third inclined surface gradually narrowing in a direction away from the third through hole; A clamping member, the clamping member is received in the second accommodation space, the clamping member comprises at least two clamping parts, and each of the clamping parts is arranged around the third through hole; At least two groups of elastic components, the elastic components are accommodated in the second accommodation space, the elastic components and the clamping parts are connected one by one, the clamping parts are connected to the second frame through the elastic components, and are held against the third inclined surface by the elastic components; When the second switch is in the off state, the second pin enters the second accommodating space through the third through hole and is clamped by each of the clamping parts. The clamping parts are accommodated in the space defined by the second pin, the third inclined surface and the correspondingly connected elastic component to resist further insertion of the second pin.

12. The locking device according to claim 11, characterized in that: The clamping portion has a fourth inclined surface, and the fourth inclined surface abuts against the third inclined surface.

13. The locking device according to claim 12, characterized in that: The second frame includes a top and a side wall, and the top is provided with the third through hole; The elastic component includes a first sub-elastic member, a second sub-elastic member and a third sub-elastic member; The first sub-elastic member is connected between the top and the clamping portion; The second sub-elastic member is connected between the side wall and the clamping portion, the third sub-elastic member is connected between the side wall and the clamping portion, and the second sub-elastic member and the third sub-elastic member are located on opposite sides of the clamping portion.

14. The locking device according to claim 13, characterized in that: At least part of the clamping portion is magnetic, and the magnetic field of the clamping portion has a component at least in the direction in which the bracket and the support plate are relatively arranged; When the second switch is in an open state, the first sub-elastic member, the second sub-elastic member and the third sub-elastic member connected to each of the clamping portions are pressed against the third inclined surface, allowing the second pin to freely move in and out; When the second switch is in the middle state, each of the clamping portions abuts against the first sub-elastic member along the third inclined surface, allowing the second pin to freely move in and out; When the second switch is in the off state, each clamping portion clamps the second pin, and each clamping portion is accommodated in the space defined by the second pin, the third inclined surface, and the correspondingly connected first sub-elastic member, the second sub-elastic member, and the third sub-elastic member, thereby resisting further insertion of the second pin.

15. The locking device according to claim 11, characterized in that: The clamping portion has a clamping surface; when the second switch is in the off state, the clamping surface of the clamping portion abuts against the second pin, and the clamping surface is a plane or a curved surface.

16. The locking device according to claim 15, characterized in that: The clamping surface has threads.

17. The locking device according to claim 1, characterized in that: The first pin and the first switch correspondingly constitute a first damping group, and the second pin and the second switch correspondingly constitute a second damping group; When a single first damping group corresponds to a second damping group array formed by a plurality of second damping groups, a distance between a geometric center of the single first damping group and a geometric center of the corresponding second damping group array is less than a first preset range; Alternatively, when two of the first damping groups correspond to a second damping group array formed by a plurality of the second damping groups, a distance between a center of a line connecting geometric centers of the two first damping groups and a geometric center of the corresponding second damping group array is less than a second preset range; Alternatively, when a first damping group array formed by a plurality of the first damping groups corresponds to a second damping group array formed by a plurality of the second damping groups, a distance between a geometric center of the first damping group array and a geometric center of the corresponding second damping group array is less than a third preset range; Alternatively, when a first damping group array formed by a plurality of the first damping groups corresponds to a single second damping group, a distance between a geometric center of the first damping group array and a geometric center of the corresponding single second damping group is less than a fourth preset range; Alternatively, when a first damping group array formed by a plurality of the first damping groups corresponds to two of the second damping groups, a distance between the geometric center of the first damping group array and the center of a line connecting the geometric centers of the corresponding two second damping groups is less than a fifth preset range.

18. The locking device according to claim 1, characterized in that: The first pin and the second pin are an integrally formed structure, and the first switch and the second switch are stacked along the direction in which the bracket and the support plate are relatively arranged.

19. A display device, characterized in that: comprising a locking device as claimed in any one of claims 1 to 18; The display device comprises a display panel, and the display panel is located at a side of the support plate away from the bracket.

20. A splicing method, characterized in that: include: A plurality of display units are respectively attached to their corresponding support plates, wherein the display surface of the display unit is located on a side of the display unit away from the support plate; Each of the support plates is detachably connected to the bracket from a side of the support plate away from the display unit; wherein, one of the bracket and the support plate comprises a first pin, and the other comprises a first switch, and by inserting the first pin into the first switch and controlling the first switch to be in an off state, the first switch locks the first pin and resists the first pin from being withdrawn; one of the bracket and the support plate comprises a second pin, and the other comprises a second switch, and by inserting the second pin into the second switch and controlling the second switch to be in an off state, the second switch locks the second pin and resists further insertion of the second pin; Placing each of the display units on the same platform from the display surface side of the display unit; By adjusting the locking height of the first switch to the first pin between each support plate and the bracket, and the locking height of the second switch to the second pin, the display surface of each display unit is made to fit with the platform, thereby completing the splicing of each display unit.

21. The splicing method according to claim 20, characterized in that: The process of adjusting the locking height of the first switch to the first pin between the support plate and the bracket includes: Applying a magnetic field to the first switch to switch the first switch from an off state to an on state, allowing the first pin to move in and out freely; After the display unit is attached to the platform under the action of gravity, the magnetic field is removed to switch the first switch from the on state to the off state, thereby locking the first pin and preventing the first pin from being withdrawn.

22. The splicing method according to claim 20, characterized in that: The process of inserting the second pin into the second switch and controlling the second switch to be in an off state so that the second switch locks the second pin and resists further insertion of the second pin includes: Applying a magnetic field to the second switch to switch the second switch from an open state to an intermediate state, and inserting the second pin into the second switch when the second switch is in the open state and / or the intermediate state; The magnetic field is removed, so that the second switch is switched from the intermediate state to the off state, the second pin is locked, and further insertion of the second pin is resisted.

23. The splicing method according to claim 20, characterized in that: The process of adjusting the locking height of the second switch to the second pin between the support plate and the bracket includes: Applying a magnetic field to the second switch and then removing the magnetic field to switch the second switch from an off state to an on state, allowing the second pin to freely move in and out; After the display unit is attached to the platform under the action of gravity, a magnetic field is applied to the second switch and then removed, so that the second switch is converted from an open state to a closed state via an intermediate state, the second pin is locked, and further insertion of the second pin is resisted.

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