Lock and splicing display device

Abstract

The lockset comprises a spring bolt assembly, a first display box body, a second display box body, a second display box body, a third display box body and a fourth display box body, the spring bolt assembly comprises a spring bolt and a driving assembly connected with the spring bolt. The lock groove assembly is used for being installed on a second display box body; the lock groove assembly comprises a locking assembly with a groove hole. Wherein the driving assembly is configured to enable the spring bolt and the locking assembly to reach a pre-hanging state in a first state; in the second state, the spring bolt in the pre-hanging state is driven to move in the direction from the second display box body to the first display box body until the spring bolt and the locking assembly are locked; the pre-hanging state is that the spring bolt keeps in contact with the locking assembly and can relatively move in a preset distance range in a first direction, and the first direction is the arrangement direction of the spring bolt assembly and the lock groove assembly.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a lock and a spliced ​​display device. Background Art

[0002] In a spliced ​​display device, a display module is fixed on a box, and two adjacent boxes are connected to each other through a lock to achieve spliced ​​display. The current lock has only a single locking function, which is not convenient for assembling between boxes. Utility Model Content

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and proposes a lock and a splicing display device.

[0004] In order to achieve the above object, the present disclosure provides a lock, comprising:

[0005] A lock tongue assembly, used for being mounted on the first display box; the lock tongue assembly comprises a lock tongue and a driving assembly connected to the lock tongue;

[0006] A lock slot assembly, used for being mounted on the second display box; the lock slot assembly comprises a locking assembly having a slot hole;

[0007] The driving assembly is configured to, in a first state, enable the lock tongue and the locking assembly to reach a pre-hanging state; and, in a second state, drive the lock tongue in the pre-hanging state to move in a direction from the second display box to the first display box until the lock tongue and the locking assembly are locked;

[0008] The pre-hanging state is a state in which the lock tongue and the locking assembly are in contact and can move relative to each other within a predetermined distance range in a first direction, wherein the first direction is an arrangement direction of the lock tongue assembly and the lock slot assembly.

[0009] In some embodiments, the locking tongue assembly further includes: a first mounting seat fixed on the first display box, the first mounting seat having a first mounting hole;

[0010] The locking tongue comprises: a main body portion passing through the first mounting hole, and a controlled portion connected to the main body portion, wherein the controlled portion has a first axial hole;

[0011] The driving assembly comprises: a driving member and a transmission mechanism connected to the driving member;

[0012] The driving member is configured to rotate around the axis of the first shaft hole in the second state;

[0013] The transmission mechanism passes through the first shaft hole and is configured to convert the rotational motion of the driving member into the linear motion of the locking tongue in the first direction in the second state.

[0014] In some embodiments, the transmission mechanism comprises:

[0015] A rotating member, the rotating member comprising: a rotating shaft portion and a first engaging portion fixed to one end of the rotating shaft portion, the rotating shaft portion being arranged through the first shaft hole and being capable of relatively rotating with the locking tongue;

[0016] A cam, the cam is sleeved on the first engaging portion and can rotate synchronously with the rotating member;

[0017] Wherein, the driving member is arranged on a side of the cam away from the controlled portion and is fixedly connected to the first engaging portion.

[0018] In some embodiments, the driving member has a snap-fitting groove matching the first snap-fitting portion; the first snap-fitting portion is snap-fitted into the snap-fitting groove;

[0019] A first limiting groove is arranged on the side wall of the first engaging portion, and the first limiting groove is arranged around the axis of the rotating member. A limiting pin is arranged in the engaging groove, and at least a part of the limiting pin is located in the first limiting groove.

[0020] In some embodiments, the cam includes a first end;

[0021] The cam is configured to rotate in the second state until the first end abuts against the first mounting seat, so that the locking tongue moves in a direction away from the locking slot assembly until the locking tongue is locked with the locking assembly.

[0022] In some embodiments, in the second state, the rotating member is configured to be acted upon by the cam abutting force and move in a direction away from the lock slot assembly, and the lock tongue is configured to move in a direction from the second display box to the first display box under the drive of the rotating member.

[0023] In some embodiments, in the pre-hanging state, the first end portion and the first mounting seat are not in contact with each other.

[0024] In some embodiments, the first mounting seat further comprises an abutting surface, and in the second state, the first end of the cam abuts against the abutting surface; the cam further comprises a second end, and the distance from the edge of the second end to the center of the first engaging portion is smaller than the distance from the edge of the first end to the center of the first engaging portion;

[0025] In the pre-hanging state, the second end portion is arranged opposite to the abutting surface;

[0026] Wherein, the second end portion is spaced apart from the abutting surface, or,

[0027] The second end portion and the abutting surface are in contact with each other but no interaction force exists, or,

[0028] The second end abuts against the abutment surface, and the distance between the abutment position when the second end abuts against the abutment surface and the center of the first engaging portion is smaller than the distance between the abutment position when the first end abuts against the abutment surface and the center of the first engaging portion.

[0029] In some embodiments, the locking tongue assembly further comprises:

[0030] A first limiting component is connected to the rotating member and is configured to switch between a limiting state and a released state; wherein the first limiting component can limit the rotating member to rotate along a target rotation direction in the limiting state; and release the limitation on the rotation direction of the rotating member in the released state.

[0031] In some embodiments, the rotating member further comprises a second engaging portion fixed to an end of the rotating shaft portion away from the first engaging portion;

[0032] The first limiting component includes:

[0033] a first pressing sheet, the first pressing sheet being sleeved on the second clamping portion and being capable of rotating synchronously with the second clamping portion; a first matching portion being disposed on a surface of the first pressing sheet away from the rotating shaft portion;

[0034] A second pressing sheet, arranged opposite to the first pressing sheet, wherein a second matching portion is arranged on a surface of the second pressing sheet facing the first pressing sheet;

[0035] A control member is fixedly connected to the second pressing plate, and is used to control the second pressing plate to move relative to the first pressing plate along the axial direction of the rotating shaft; wherein, when the second pressing plate approaches the first pressing plate so that the first matching portion and the second matching portion match each other, the first limiting component reaches the limited state; when the second pressing plate moves away from the first pressing plate so that the first matching portion and the second matching portion are released from matching, the first limiting component reaches the released state.

[0036] In some embodiments, the first mounting seat has a first rotation limit portion and a second rotation limit portion, the first rotation limit portion and the second rotation limit portion define a rotation limit gap matching the second pressing plate, the second pressing plate is located in the rotation limit gap, and the rotation limit gap is used to limit the rotational freedom of the second pressing plate around the axis of the rotating shaft portion.

[0037] In some embodiments, the first matching portion includes a plurality of first ratchet teeth arranged around the axis of the rotating shaft portion, the tooth tips of the first ratchet teeth point to the second pressing piece; along the target rotation direction, the height of the first ratchet teeth gradually decreases; the second matching portion includes a plurality of second ratchet teeth arranged around the axis of the rotating shaft portion, the tooth tips of the second ratchet teeth point to the first pressing piece; along the target rotation direction, the height of the second ratchet teeth gradually increases;

[0038] or,

[0039] The first matching portion includes a plurality of first ratchet teeth arranged around the axis of the rotating shaft portion, the tips of the first ratchet teeth point to the second pressing piece; along the target rotation direction, the height of the first ratchet teeth gradually decreases; the second matching portion includes a plurality of second grooves arranged around the axis of the rotating shaft portion, and along the target rotation direction, the depth of the second grooves gradually decreases;

[0040] or,

[0041] The first matching portion includes a plurality of first grooves arranged around the axis of the rotating shaft portion, and the depth of the first grooves gradually increases along the target rotation direction; the second matching portion includes a plurality of second ratchet teeth arranged around the axis of the rotating shaft portion, and the tooth tips of the second ratchet teeth point to the first pressing piece; along the target rotation direction, the height of the second ratchet teeth gradually increases.

[0042] In some embodiments, the control member sequentially passes through the driving member, the cam, the rotating member and the first pressing piece;

[0043] The first limiting component also includes a first elastic member, one end of which is connected to the driving member, and the other end is connected to the control member, and the first elastic member is used to apply an elastic force from the second pressing piece to the first pressing piece to the control member.

[0044] In some embodiments, the control member includes a pressing portion and a connecting rod portion, the connecting rod portion sequentially passes through the driving member, the cam, the rotating member and the first pressing piece, one end of the connecting rod portion is fixedly connected to the second pressing piece, and the other end is fixedly connected to the pressing portion;

[0045] The driving member has a receiving groove, at least part of the first elastic member is located in the receiving groove, and two ends are respectively connected to the inner wall of the receiving groove and the pressing portion; the first elastic member is in a compressed state or a natural state when not subjected to pressing force.

[0046] In some embodiments, the locking tongue assembly further comprises:

[0047] A second limiting component is disposed on at least one of the first pressing plate and the second pressing plate, and is used to limit a rotation start position and / or a rotation end position of the first pressing plate when the first pressing plate rotates relative to the second pressing plate.

[0048] In some embodiments, the second limiting component includes:

[0049] A lug, arranged at an edge of the first pressing sheet;

[0050] A first stopper and a second stopper are arranged on a surface of the second pressing sheet facing the first pressing sheet;

[0051] When the first pressing plate rotates relative to the second pressing plate, the lug moves between the first stopper and the second stopper.

[0052] In some embodiments, a limiting protrusion is further provided on the second pressing plate, and the limiting protrusion is located between the first stopper and the second stopper; the height of the limiting protrusion is less than the height of either the first stopper or the second stopper;

[0053] The lug is also provided with a second limiting groove matching the limiting protrusion.

[0054] In some embodiments, the distance between the limiting protrusion and the first stopper is smaller than the distance between the limiting protrusion and the second stopper.

[0055] In some embodiments, a slider is disposed on one of the main body of the locking tongue and the first mounting seat, and a slideway is disposed on the other; the slideway extends along the first direction; and the slideway is slidably disposed on the slideway.

[0056] In some embodiments, the locking tongue includes a main body, the main body includes a lock portion, a first connecting portion, and a second connecting portion sequentially connected along the first direction, the second connecting portion is connected to the driving assembly; the diameter of the end surface of the lock portion facing the first connecting portion and the diameter of the end surface of the second connecting portion facing the first connecting portion are both larger than the diameter of the first connecting portion;

[0057] The locking assembly comprises:

[0058] A locking piece, wherein the slot is formed on the locking piece;

[0059] a traction member connected to the locking member and configured to allow the locking portion to pass through the slot until the locking member contacts an outer wall of the first connecting portion;

[0060] Wherein, in the pre-hanging state, the locking member and the first connecting portion can move relative to each other in the first direction; when the locking tongue and the locking assembly are locked, the locking portion is pressed onto the locking member.

[0061] In some embodiments, the lock slot assembly further includes: a second mounting seat for mounting on the second display box; the locking member is slidably disposed on the second mounting seat;

[0062] The cross section of the locking portion gradually increases in a direction approaching the first connecting portion;

[0063] The traction member is an elastic element relatively fixed to the second mounting seat and is used to provide a force along a third direction to the locking member at least when the locking tongue enters the slot to reach the pre-hanging state, and the third direction is perpendicular to the extension direction of the locking tongue;

[0064] Wherein, in the pre-hanging state, an orthographic projection of the slot on a reference plane perpendicular to the first direction partially overlaps with an orthographic projection of the lock portion on the reference plane.

[0065] In some embodiments, the slot includes: a main hole portion, and a protrusion located on one side of the main hole portion along the radial direction and connected to the main hole portion; the third direction is the direction in which the protrusion points to the main hole portion;

[0066] The diameter of the main hole portion is larger than the diameter of the end surface of the locking portion facing the first connecting portion;

[0067] In the pre-hanging state, the orthographic projection of the protruding portion on the reference surface partially overlaps with the orthographic projection of the locking portion on the reference surface.

[0068] In some embodiments, the locking member includes: a locking piece portion and a first fixing portion and a second fixing portion fixed to the locking piece portion, and the slot is provided on the locking piece portion;

[0069] The locking member is provided with a third fixing portion on one side along the third direction, and the third fixing portion is relatively fixed to the second mounting seat; the traction member is a torsion spring, and the torsion spring is sleeved on the third fixing portion, and the two ends of the torsion spring are respectively against the first fixing portion and the second fixing portion, and when the locking tongue contacts the locking member, the torsion spring is deformed in its winding direction, thereby providing a force along the third direction to the first fixing portion and the second fixing portion.

[0070] In some embodiments, the lock slot assembly further comprises:

[0071] A lock cover, located at a side of the locking member away from the lock tongue assembly and fixedly connected to the second mounting seat;

[0072] An elastic component is arranged between the lock cover and the locking member. When the lock tongue is in the pre-hanging state, the elastic component is in a compressed state to provide a damping force to the lock tongue.

[0073] In some embodiments, the elastic component comprises:

[0074] A shaft sleeve, which is fixedly connected to the lock cover and can be sleeved on the lock head in the pre-hanging state;

[0075] an abutment plate, the abutment plate being located in the shaft sleeve and being capable of relative movement with the shaft sleeve in the first direction;

[0076] A second elastic member, two ends of which are respectively connected to the locking cover and the abutting plate;

[0077] Wherein, when the locking tongue is in the pre-hanging state, the second elastic member is in a compressed state, and the abutting plate abuts against the locking tongue.

[0078] In some embodiments, the locking tongue assembly further comprises: a first mounting base for mounting on the first display box;

[0079] The lock slot assembly further comprises: a second mounting seat for mounting on the second display box; the locking assembly is arranged on the second mounting seat;

[0080] Wherein, one of the first mounting seat and the second mounting seat is provided with a positioning column, and the other is provided with a positioning hole matching with the positioning column.

[0081] The present disclosure further provides a spliced ​​display device, comprising a first display box and a second display box, and the lock described above, wherein a lock tongue assembly of the lock is installed on the first display box, and a lock slot assembly of the lock is installed on the second display box.

[0082] In some embodiments, one of the first display box and the second display box is provided with a positioning post, and the other is provided with a positioning hole matching the positioning post;

[0083] and / or,

[0084] The locking tongue assembly also includes: a first mounting seat for mounting on the first display box; the locking slot assembly also includes: a second mounting seat for mounting on the second display box; a positioning column is provided on one of the first mounting seat and the second mounting seat, and a positioning hole matching the positioning column is opened on the other.

[0085] In some embodiments, the spliced ​​display device is a vertical display device and includes at least one column of display boxes, each column of the display boxes includes a plurality of the display boxes arranged sequentially from the top to the bottom of the spliced ​​display device;

[0086] Two adjacent display boxes in the same column are connected by at least two locks, wherein, among the two adjacent display boxes in the same column, the display box located on the upper side serves as the second display box, and the display box located on the lower side serves as the first display box.

[0087] In some embodiments, the spliced ​​display device further includes a plurality of display modules, and the first display box and the second display box are both used to support at least one of the display modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0089] Figure 1 This is a schematic diagram of the application of the lock provided in some embodiments of the present disclosure.

[0090] Figure 2 It is a schematic diagram of a locking tongue assembly and a first display box provided in some embodiments of the present disclosure.

[0091] Figure 3 It is a top-view stereoscopic schematic diagram of a partial structure of a lock slot assembly provided in some embodiments of the present disclosure.

[0092] Figure 4 This is a schematic diagram of a lock provided in some embodiments of the present disclosure in a pre-hanging state.

[0093] Figure 5 This is a schematic diagram of a lock provided in some embodiments of the present disclosure in a locked state.

[0094] Figure 6 This is a schematic diagram of a lock tongue assembly in a pre-hanging state provided in some embodiments of the present disclosure.

[0095] Figure 7 This is a schematic diagram of a locking tongue assembly in a locked state provided in some embodiments of the present disclosure.

[0096] Figure 8 It is an exploded view of a locking tongue assembly provided in some embodiments of the present disclosure.

[0097] Fig. 9 It is a cross-sectional view of a lock provided in some embodiments of the present disclosure in a pre-hanging state.

[0098] Fig.10 It is a side view of a rotating member provided in some embodiments of the present disclosure.

[0099] Fig.11 Schematic diagram of a driving member provided in some embodiments of the present disclosure.

[0100] Fig.12 It is a plan view of the engaging groove provided in some embodiments of the present disclosure.

[0101] Fig.13 This is a schematic diagram of the cooperation between the limit pin and the first limit groove provided in some embodiments of the present disclosure.

[0102] Fig.14A This is a schematic diagram of a cam in a pre-hanging state provided in some embodiments of the present disclosure.

[0103] Fig. 14B This is a schematic diagram of a cam in a locked state provided in some embodiments of the present disclosure.

[0104] Fig.15 It is a schematic diagram of a first limiting component and its adjacent structures provided in some embodiments of the present disclosure.

[0105] Fig.16 This is a schematic diagram of the positional relationship between the first mounting seat and the second pressing plate provided in some embodiments of the present disclosure.

[0106] Fig.17 It is a stereoscopic schematic diagram from a top perspective of a lock slot assembly provided in some embodiments of the present disclosure.

[0107] Fig.18 for Fig.17 The schematic diagram of the lock slot assembly shown is shown with the lock cover removed.

[0108] Fig.19 An exploded view of a lock slot assembly provided in some embodiments of the present disclosure. DETAILED DESCRIPTION

[0109] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0110] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0111] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0112] As used herein, "parallel" and "perpendicular" include the described situation and the situation similar to the described situation, and the range of the similar situation is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°.

[0113] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0114] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include deviations in shape due to, for example, manufacturing. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0115] The embodiment of the present disclosure provides a lock for connecting two adjacent display boxes. The display box here is used in a spliced ​​display device, which includes a plurality of display boxes and a plurality of display modules spliced ​​together, each display module including a display substrate and a driving circuit board electrically connected to the display substrate. The display box is used to support the display module. For example, the display box includes a bottom wall and a side wall connected to the bottom wall, the bottom wall and the side wall form a storage space, the display substrate is supported on the side wall, and the driving circuit board is located in the storage space. Figure 1 is a schematic diagram of the application of the lock provided in some embodiments of the present disclosure, Figure 2 is a schematic diagram of a locking tongue 110 and a first display box 301 provided in some embodiments of the present disclosure, Figure 3 2 is a top perspective perspective diagram of a partial structure of a lock slot assembly 200 provided in some embodiments of the present disclosure. Figure 4 This is a schematic diagram of a lock provided in some embodiments of the present disclosure in a pre-hanging state. Figure 5 This is a schematic diagram of a lock provided in some embodiments of the present disclosure in a locked state. Figures 1 to 5 As shown, the lock in the embodiment of the present disclosure includes a lock tongue assembly 100 and a lock slot assembly 200. The lock tongue assembly 100 is used to be installed on the first display box 301; the lock tongue assembly 100 includes a lock tongue 110 and a driving assembly 120 connected to the lock tongue 110. The lock slot assembly 200 is used to be installed on the second display box 302; the lock slot assembly 200 includes a locking assembly 210 having a slot 200v. The driving assembly 120 is configured to: in a first state, enable the lock tongue 110 and the locking assembly 210 to reach a pre-hanging state; and in a second state, the driving assembly 120 can drive the lock tongue 110 in the pre-hanging state to move in a direction from the second display box 302 to the first display box 301 until the lock tongue 110 and the locking assembly 210 are locked (that is, the lock tongue 110 and the locking assembly 210 reach a locked state). The pre-hanging state is a state in which the lock tongue 110 and the locking assembly 210 maintain contact and can move relative to each other within a predetermined distance range in a first direction, where the first direction is the arrangement direction of the lock tongue assembly 100 and the lock slot assembly 200 .

[0116] The lock in the embodiment of the present disclosure has a pre-hanging state and a locking state. In practical applications, the first display box 301 with the lock tongue assembly 100 installed can be moved close to the second display box 302 with the lock slot assembly 200 installed until the lock tongue 110 and the locking assembly 210 reach the pre-hanging state; then, the driving assembly 120 reaches the second state, thereby driving the lock tongue 110 to lock the lock tongue assembly 100. By setting the lock in the embodiment of the present disclosure, the two display boxes can be connected more conveniently, and can be operated by a single person.

[0117] Figure 6 is a schematic diagram of the bolt assembly 100 in a pre-hanging state provided in some embodiments of the present disclosure, Figure 7 is a schematic diagram of a locking tongue assembly 100 provided in some embodiments of the present disclosure in a locked state, Figure 8 is an exploded view of a locking tongue assembly 100 provided in some embodiments of the present disclosure, Fig. 9 sectional view of a lock provided in some embodiments of the present disclosure in a pre-hanging state, such as Figure 2 , Figures 6 to 9 As shown, in some embodiments, the locking tongue assembly 100 further includes a first mounting base 130 fixed on the first display box 301, for example, Figure 6 and Figure 7 As shown, the first mounting base 130 is fixed to the first display box 301 by a first fastener 171 (such as a screw). The first mounting base 130 has a first mounting hole.

[0118] like Figure 8 and Fig. 9 As shown, the locking tongue 110 includes: a main body 111 inserted into the first mounting hole, and a controlled part 112 connected to the main body 111, wherein the controlled part 112 has a first axial hole. The main body 111 and the main body 111 may be an integral structure.

[0119] like Figure 8 and Fig. 9 As shown, the driving assembly 120 includes: a driving member 121 and a transmission mechanism 12a connected to the driving member 121. The driving member 121 is configured to rotate around the axis of the first shaft hole in the second state. The transmission mechanism 12a passes through the first shaft hole and is configured to convert the rotational motion of the driving member 121 into a linear motion of the locking tongue 110 in the first direction in the second state. The first state is the state before the driving member 121 starts to rotate.

[0120] Among them, the driving member 121 can be a long strip structure. When locking the lock tongue 110 and the locking assembly 210, the operator can hold the driving member 121 and rotate it, thereby driving the lock tongue 110 in the pre-hanging state to move in a direction away from the locking assembly 210 until it reaches a locked state.

[0121] In some embodiments, Figure 8 and Fig. 9 As shown, the transmission mechanism 12 a includes a rotating member 123 and a cam 122 . Fig.10 is a side view of a rotating member 123 provided in some embodiments of the present disclosure, Fig.11 is a schematic diagram of a driving member 121 provided in some embodiments of the present disclosure, Fig.12 FIG. 1 is a plan view of the engagement slot 121v provided in some embodiments of the present disclosure. Fig.10 As shown, the rotating member 123 includes: a rotating shaft portion 1230 and a first engaging portion 1231 fixed to one end of the rotating shaft portion 1230, the rotating shaft portion 1230 is arranged through the first shaft hole, and can rotate relative to the locking tongue 110. The rotating shaft portion 1230 and the first engaging portion 1231 are rigidly connected, for example, the two are an integrally formed structure. The cam 122 is sleeved on the first engaging portion 1231, and can rotate synchronously with the rotating member 123. The driving member 121 is arranged on the side of the cam 122 away from the controlled portion 112, and is fixedly connected to the first engaging portion 1231.

[0122] In some embodiments, Fig.11 As shown, the driving member 121 has a snap-fitting groove 121v matching the first snap-fitting portion 1231; the first snap-fitting portion 1231 is snap-fitted in the snap-fitting groove 121v, so that when the driving member 121 rotates around the axis of the first shaft hole, the rotating member 123 is driven to rotate synchronously. For example, the cross section of the snap-fitting groove 121v is a right-angled polygon or a rounded polygon, such as a rounded rectangle, and the shape of the first snap-fitting portion 1231 is adapted to the shape of the snap-fitting groove 121v, so that the driving member 121 and the first snap-fitting portion 1231 can rotate synchronously. The cross section of the snap-fitting groove 121v refers to the cross section of the snap-fitting groove 121v perpendicular to the axis of the first shaft hole. In addition, the cam 122 is also provided with a through hole having the same or similar shape as the snap-fitting groove 121v, and the first snap-fitting portion 1231 passes through the through hole on the cam 122, so that the cam 122 and the first snap-fitting portion 1231 can rotate synchronously.

[0123] Fig.13 Schematic diagram of the cooperation between the limiting pin 151 and the first limiting groove 150 provided in some embodiments of the present disclosure. In some embodiments, such as Figure 8 and Fig. 9 , Fig.13As shown, a first limiting groove 150 is provided on the side wall of the first engaging portion 1231, and the first limiting groove 150 is arranged around the axis of the rotating member 123. A limiting pin 151 is provided in the engaging groove 121v, and at least part of the limiting pin 151 is located in the first limiting groove 150. The extending direction of the limiting pin 151 can be perpendicular to the axial direction of the first shaft hole. By setting the limiting pin 151, it is possible to prevent the driving member 121 and the rotating member 123 from moving relative to each other in the axial direction of the first shaft hole, thereby preventing the driving member 121 from being separated from the rotating member 123. In one example, the number of the limiting pins 151 can be two, and the two limiting pins 151 are arranged opposite to each other to improve the fixing stability between the driving member 121 and the rotating member 123.

[0124] Among them, Fig.11 As shown, a pin hole 151v is provided on the side wall of the engaging groove 121v, and the limiting pin 151 can pass through the pin hole 151v and extend into the engaging groove 121v. In practical applications, when the limiting member and the rotating member 123 are assembled, the first engaging portion 1231 can be first extended into the engaging groove 121v, and then the limiting pin 151 is installed from the pin hole 151v into the engaging groove 121v.

[0125] Fig.14A is a schematic diagram of the cam 122 in a pre-hanging state provided in some embodiments of the present disclosure, Fig. 14B 1 is a schematic diagram of the cam 122 in a locked state provided in some embodiments of the present disclosure, in order to more clearly illustrate the relative position relationship between the cam 122 and the first mounting seat 130, Fig.14A and Fig. 14B The driving member 121 is hidden in the figure. Fig.14A and Fig. 14B As shown, the cam 122 includes a first end 1221, and the cam 122 is configured to rotate to the first end 1221 to abut against the first mounting seat 130 when the driving assembly 120 is in the second state, so that the locking tongue 110 moves along the direction from the second display box 302 to the first display box 301 until the locking tongue 110 is locked with the locking assembly 210. The first mounting seat 130 has an abutting surface 130s, and when the driving assembly 120 is in the second state, the first end 1221 of the cam 122 abuts against the abutting surface 130s, and the abutting surface 130s is perpendicular to the first direction.

[0126] In some embodiments, in the second state, the rotating member 123 is configured to be acted upon by the abutting force of the cam 122 and move in a direction away from the first mounting seat 130 , and the locking tongue 110 is configured to move in a direction from the second display box 302 to the first display box 301 under the drive of the rotating member 123 .

[0127] In some embodiments, in the pre-hanging state, the first end portion 1221 and the abutting surface 130s do not contact each other. It should be noted that, when the locking state is not reached, the first end portion 1221 may not contact the abutting surface 130s.

[0128] In some embodiments, the cam 122 further includes a second end 1222, and the distance from the edge of the second end 1222 to the center of the first engaging portion 1231 is smaller than the distance from the edge of the first end 1221 to the center of the first engaging portion 1231. In the pre-hanging state, the second end 1222 is disposed opposite to the abutting surface 130s, for example, the line between the second end 1222 and the center of the first engaging portion 1231 is perpendicular to the line between the first end 1221 and the center of the first engaging portion 1231.

[0129] The second end 1222 and the abutting surface 130s are spaced apart; or the second end 1222 and the abutting surface 130s are in contact with each other but there is no interaction force; or the second end 1222 abuts against the abutting surface 130s, and the distance between the abutting position of the second end 1222 and the abutting surface 130s and the center of the first engaging portion 1231 is smaller than the distance between the abutting position of the first end 1221 and the abutting surface 130s and the center of the first engaging portion 1231. In these three cases, it can be achieved that in the second state, the rotating member 123 drives the cam 122 to rotate until the first end 1221 of the cam 122 abuts against the abutting surface 130s, and there is an abutting force between the first end 1221 and the abutting surface 130s, and under the action of the abutting force, the rotating member 123 is pushed to move away from the first mounting seat 130, thereby driving the locking tongue 110 to move in the direction from the second display box 302 to the first display box 301.

[0130] For example, the line connecting the first end 1221 and the center of the cam 122 and the line connecting the second end 1222 and the center of the cam 122 is less than or equal to 90°. In this way, the cam 122 can be driven to switch between the locked state and the unlocked state by a rotation of no more than 90°, and the switching is more convenient. For example, the line connecting the first end 1221 and the center of the cam 122 and the line connecting the second end 1222 and the center of the cam 122 are equal to 90°. For example, the cam 122 can be a centrally symmetrical structure. In some embodiments, the cam 122 can be made of a wear-resistant material with a relatively high hardness.

[0131] In some embodiments, the lock tongue assembly 100 further includes a first limiting assembly, which is connected to the rotating member 123 and is configured to switch between a limiting state and a released state; wherein the first limiting assembly can limit the rotation direction of the rotating member 123 in the limiting state, so that the rotating member 123 rotates along the target rotation direction; and release the limitation on the rotation direction of the rotating member 123 in the released state. Specifically, in the limiting state, the first limiting assembly limits the rotation direction of the rotating member 123, so that the transmission mechanism can only drive the lock tongue 110 to move away from the locking assembly 210 in the first direction. For example, Figure 6 As shown, in the pre-hanging state, the driving member 121 is in a vertical state; and the first limiting component limits the rotating member 123 to rotate only in the counterclockwise direction (i.e., the above-mentioned target rotation direction) in the limiting state until the lock tongue 110 and the locking assembly 210 reach a locked state, as shown in FIG. Figure 7 as shown in .

[0132] The limiting effect of the first limiting component on the rotation direction can prevent the driving member 121 from swinging during the rotation process or when the locking tongue 110 and the locking component 210 are locked, thereby improving the stability and safety of the connection between the two display boxes.

[0133] In some embodiments, Figure 8 and Fig.10 As shown, the rotating member 123 further includes a second engaging portion 1232 fixed to an end of the rotating shaft portion 1230 away from the first engaging portion 1231, and the second engaging portion 1232 is rigidly connected to the rotating shaft portion 1230, for example, the second engaging portion 1232, the rotating shaft portion 1230, and the first engaging portion 1231 are an integrally formed structure. The first limiting component is connected to the second engaging portion 1232.

[0134] Fig.15 Schematic diagram of the first limiting component and its adjacent structures provided in some embodiments of the present disclosure, such as Figure 8 , Fig. 9 and Fig.15 As shown, the first limiting component includes: a first pressing plate 141, a second pressing plate 142 and a control member 143. The first pressing plate 141 is sleeved on the second engaging portion 1232 and can rotate synchronously with the second engaging portion 1232. For example, a polygonal through hole is provided on the first pressing plate 141, and the shape of the second engaging portion 1232 matches the shape of the through hole on the first pressing plate 141 and is located in the through hole on the first pressing plate 141, so that the first pressing plate 141 can rotate synchronously with the second engaging portion 1232. Fig.15As shown, the first pressing piece 141 is provided with a first matching portion 165 on a surface away from the rotating shaft portion 1230. The second pressing piece 142 is arranged opposite to the first pressing piece 141, and the second matching portion 166 is provided on the surface of the second pressing piece 142 facing the first pressing piece 141. The control member 143 is fixedly connected to the second pressing piece 142, and is used to control the second pressing piece 142 to move relative to the first pressing piece 141 along the axial direction of the rotating shaft portion 1230; wherein, when the second pressing piece 142 approaches the first pressing piece 141 so that the first matching portion 165 and the second matching portion 166 are matched with each other, the first limiting assembly reaches a limiting state; when the second pressing piece 142 moves away from the first pressing piece 141 so that the first matching portion 165 and the second matching portion 166 are released from the matching, the first limiting assembly reaches a released state.

[0135] In one example, a force may be manually applied to the control member 143 to control the second pressing piece 142 to move relative to the first pressing piece 141 along the axial direction of the rotating shaft portion 1230 .

[0136] In some embodiments, Fig.15 As shown, the first matching portion 165 includes a plurality of first ratchet teeth 1651 surrounding the axis of the shaft portion 1230, the tooth tips of the first ratchet teeth 1651 point to the second pressing piece 142; along the target rotation direction, the height of the first ratchet teeth 1651 gradually decreases. The second matching portion 166 includes a plurality of second ratchet teeth 1661 surrounding the axis of the shaft portion 1230, the tooth tips of the second ratchet teeth 1661 point to the first pressing piece 141; along the target rotation direction, the height of the second ratchet teeth 1661 gradually increases. Through the matching of the first ratchet teeth 1651 and the second ratchet teeth 1661, the first pressing piece 141 can only rotate in one direction relative to the second pressing piece 142.

[0137] What requires instructions is: Fig.15The first matching portion 165 and the second matching portion 166 are both ratchet teeth. In other examples, the first matching portion 165 and the second matching portion 166 can adopt the matching mode of ratchet teeth and grooves. For example, in another example, the first matching portion 165 can include a plurality of first ratchet teeth 1651 arranged around the axis of the shaft portion 1230, and the tooth tips of the first ratchet teeth 1651 point to the second pressing piece 142; along the target rotation direction, the height of the first ratchet teeth 1651 gradually decreases; the second matching portion 166 can include a plurality of second grooves arranged around the axis of the shaft portion 1230, and along the target rotation direction, the depth of the second grooves gradually decreases. In another example, the first matching portion 165 can include a plurality of first grooves arranged around the axis of the shaft portion 1230, and along the target rotation direction, the depth of the first grooves gradually increases; the second matching portion 166 can include a plurality of second ratchet teeth 1661 arranged around the axis of the shaft portion 1230, and along the target rotation direction, the height of the second ratchet teeth 1661 gradually increases. Of course, the first matching portion 165 and the second matching portion 166 may also adopt other structures and shapes, as long as they can limit the rotation direction of the first pressing plate 141 when the first limiting component reaches the limiting state, so that it rotates along the target rotation direction but cannot rotate in the opposite direction.

[0138] Fig.16 FIG. 1 is a schematic diagram of the positional relationship between the first mounting seat 130 and the second pressing plate 142 provided in some embodiments of the present disclosure. Figures 6 to 8 , Fig.16 As shown, the first mounting seat 130 has a first rotation limiting portion 131 and a second rotation limiting portion 132, the first rotation limiting portion 131 and the second rotation limiting portion 132 define a rotation limiting gap 130v, the second pressing piece 142 is located in the rotation limiting gap 130v, and the rotation limiting gap 130v is used to limit the rotational freedom of the second pressing piece 142 around the axis of the rotating shaft portion 1230 to prevent the second pressing piece 142 from rotating with the first pressing piece 141. In one example, the second pressing piece 142 is roughly polygonal, and the rotation limiting gap 130v is a rectangular gap to limit the rotation of the second pressing piece 142.

[0139] In one example, a slide groove 131s is provided on the first rotation limit portion 131 and the second rotation limit portion 132, and the slide groove 131s extends along the first direction; when the first limiting component is in the limiting state, the edge positions on the opposite sides of the second pressing plate 142 overlap the slide groove 131s, and the second pressing plate 142 can move along the slide groove 131s.

[0140] In some embodiments, Figure 8 , Fig. 9 and Fig.13As shown, the control member 143 passes through the driving member 121, the cam 122, the rotating member 123 and the first pressing piece 141 in sequence. The first limiting assembly also includes a first elastic member 144, one end of the first elastic member 144 is connected to the driving member 121, and the other end is connected to the control member 143. The first elastic member 144 is used to apply a force in the second direction to the control member 143, and the second direction is the direction from the second pressing piece 142 to the first pressing piece 141. Through the setting of the first elastic member 144, the force in the second direction can be automatically applied to the control member 143, so as to drive the second pressing piece 142 to be arranged close to the first pressing piece 141, and then during the rotation process of the driving member 121, the first locking assembly 210 reaches a locked state; by manually applying pressure to the control member 143, the control member 143 can be moved in the opposite direction of the second direction, so that the second pressing piece 142 is away from the first pressing piece 141, and then the first locking assembly 210 reaches an unlocked state.

[0141] In some embodiments, Fig. 9 and Fig.13 As shown, the control member 143 includes a pressing portion 1431 and a connecting rod portion 1432. The connecting rod portion 1432 is fixedly connected to the pressing portion 1431. For example, the two are an integrally formed structure. The connecting rod portion 1432 passes through the driving member 121, the cam 122, the rotating member 123 and the first pressing plate 141 in sequence. One end of the connecting rod portion 1432 is fixedly connected to the second pressing plate 142, and the other end is fixedly connected to the pressing portion 1431. Fig. 9 As shown, the driving member 121 has a receiving groove 121s, at least part of the first elastic member 144 is located in the receiving groove 121s, and the two ends are respectively connected to the inner wall of the receiving groove 121s and the pressing portion 1431; the first elastic member 144 is in a compressed state or a natural state when not subjected to a pressing force, so that it can continuously provide pressure to the pressing portion 1431 when not subjected to a pressing force. Among them, a hole can be provided at the middle position of the bottom of the receiving groove 121s, and the connecting rod portion 1432 passes through the hole at the bottom of the receiving groove 121s. The first elastic member 144 can be a compression spring, one end of which can be connected to the edge position of the bottom of the receiving groove 121s, and the first elastic member 144 can be sleeved on the connecting rod portion 1432. The second pressing sheet 142 can be connected to one end of the connecting rod portion 1432 away from the pressing portion 1431 through a second fastener 156 (such as a screw).

[0142] When it is necessary to put the first limiting component into a released state, pressing force can be manually applied to the pressing portion 1431 to move the second pressing piece 142 away from the first pressing piece 141, so as to ensure that the first matching portion 165 and the second matching portion 166 on the first pressing piece 141 no longer match, thereby ensuring that the first pressing piece 141 can rotate in both directions (the target rotation direction and the opposite direction); when pressing force is no longer applied to the pressing portion 1431, during the rotation of the driving member 121, the elastic restoring force of the first elastic member 144 is utilized to set the second pressing piece 142 close to the first pressing piece 141 to reach a locked state.

[0143] In some embodiments, the bolt assembly 100 further includes: a second limiting assembly, which is disposed on at least one of the first pressing piece 141 and the second pressing piece 142, and is used to limit the rotation start position and / or rotation end position of the first pressing piece 141 when the first pressing piece 141 rotates relative to the second pressing piece 142. It should be noted that the rotation start position (or rotation end position) of the first pressing piece 141 refers to the positive projection position of a reference position on the first pressing piece 141 on the second pressing piece 142 when the first pressing piece 141 starts to rotate (or stops rotating). In addition, it can be understood that since the first pressing piece 141, the cam 122, and the rotating member 123 rotate synchronously, the restriction on the rotation start position of the first pressing piece 141 is also the restriction on the rotation start position of the cam 122 and the rotating member 123; the restriction on the rotation end position of the second pressing piece 142 is also the restriction on the rotation end position of the cam 122 and the rotating member 123.

[0144] For example, in one example, the starting rotation position of the first pressing plate 141 is limited to: when the second end 1222 of the cam 122 abuts against the first mounting seat 130, the reference position on the first pressing plate 141 is the positive projection position on the second pressing plate 142; the ending rotation position of the first pressing plate 141 is limited to: when the first end 1221 of the cam 122 abuts against the first mounting seat 130, the reference position on the first pressing plate 141 is the positive projection position on the second pressing plate 142.

[0145] In some embodiments, Fig.16As shown, the second limiting component includes: a lug 164, a first stopper 161 and a second stopper 162. The lug 164 is arranged at the edge of the first pressing sheet 141. The first stopper 161 and the second stopper 162 are arranged on the surface of the second pressing sheet 142 facing the first pressing sheet 141. When the first pressing sheet 141 rotates relative to the second pressing sheet 142, the lug 164 moves between the first stopper 161 and the second stopper 162. The lug 164 is restricted from moving between the first stopper 161 and the second stopper 162 by being blocked by the first stopper 161 and the second stopper 162, thereby limiting the rotation start position and the rotation end position of the first pressing sheet 141. Among them, the reference position on the above-mentioned first pressing plate 141 is the position where the lug 164 is set on the first pressing plate 141. In this case, the starting position of the rotation of the first pressing plate 141 is: located on the side of the first stop block 161 close to the second stop block 162 and adjacent to the first stop block 161; the ending position of the rotation of the first pressing plate 141 is: located on the side of the second stop block 162 close to the first stop block 161 and adjacent to the second stop block 162.

[0146] In some embodiments, a limiting protrusion 163 is further provided on the second pressing piece 142, and the limiting protrusion 163 is located between the first stopper 161 and the second stopper 162; the height of the limiting protrusion 163 is less than the height of either the first stopper 161 or the second stopper 162. A second limiting groove 164v matching the limiting protrusion 163 is further provided on the lug 164. When the lug 164 is located in the second limiting groove 164v, the second pressing piece 142 and the first pressing piece 141 can no longer rotate relative to each other, so that the driving member 121 remains fixed and cannot rotate, thereby preventing the driving member 121 from rotating by mistake due to external force when it is not necessary to rotate.

[0147] In some embodiments, the distance between the limiting protrusion 163 and the first stopper 161 is smaller than the distance between the limiting protrusion 163 and the second stopper 162, so as to prevent the limiting protrusion 163 from obstructing the rotating member 123 during the rotation of the rotating member 123. In one example, the position of the limiting protrusion 163 satisfies: when the limiting protrusion 163 is located in the second limiting groove 164v, the lug 164 contacts or approaches the first stopper 161, and the second end 1222 of the cam 122 is opposite to the first mounting seat 130.

[0148] In some embodiments, along the above-mentioned target rotation direction, the limiting protrusion 163 may have a first vertical surface and a first inclined surface, the first inclined surface is located on one side of the first vertical surface along the target rotation direction, and the shape of the second limiting groove 164v matches the shape of the limiting protrusion 163. In this case, the limiting protrusion 163 can slide into the second limiting groove 164v very smoothly, and when the limiting protrusion 163 needs to be separated from the second limiting groove 164v, it is necessary to apply a thrust to the control member 143 to move the second pressing sheet 142 away from the first pressing sheet 141, so as to further prevent the driving member 121 from rotating by mistake due to external force when it is not necessary to rotate.

[0149] In some embodiments, Fig. 9 As shown, a slider 152 is provided on one of the main body 111 of the lock tongue 110 and the first mounting seat 130, and a slideway 153 is provided on the other; the slideway 153 extends along the first direction; the slideway 153 is slidably provided on the slideway 153 to prevent the lock tongue 110 from escaping from the mounting hole of the first mounting seat 130. Fig. 9 In the figure, the slider 152 is arranged on the first mounting seat 130 and the slideway 153 is arranged on the main body 111. Alternatively, the slideway 153 may be arranged on the first mounting seat 130 and the slider 152 may be arranged on the main body 111. The slider 152 may be a screw and the slideway 153 may be a groove.

[0150] like Figure 8 and Fig. 9 As shown, the lock tongue 110 includes a main body 111, and the main body 111 includes a lock portion 1110, a first connection portion 1111, and a second connection portion 1112 connected in sequence along a first direction, and the second connection portion 1112 is connected to the drive assembly 120; the diameter of the end surface of the lock portion 1110 facing the first connection portion 1111 and the diameter of the end surface of the second connection portion 1112 facing the first connection portion 1111 are both larger than the diameter of the first connection portion 1111. In the pre-hanging state and the locking state, the first connection portion 1111 is inserted into the slot 200v.

[0151] Fig.17 2 is a top perspective perspective diagram of a lock slot assembly 200 provided in some embodiments of the present disclosure. Fig.18 for Fig.17 The schematic diagram of the lock slot assembly 200 after removing the lock cover 220 is shown. Fig.19 FIG. 2 is an exploded view of a lock slot assembly 200 provided in some embodiments of the present disclosure, such as Figures 17 to 19As shown, the locking assembly 210 includes: a locking member 211 and a pulling member 212. A slot 200v is provided on the locking member 211; the pulling member 212 is connected to the locking member 211 and is configured to allow the locking portion 1110 to pass through the slot 200v until the locking member 211 contacts the outer wall of the first connecting portion 1111. In the pre-hanging state, the locking member 211 and the first connecting portion 1111 can move relative to each other in the first direction; when the locking tongue 110 is locked with the locking assembly 210, the locking portion 1110 is pressed against the locking member 211.

[0152] In some embodiments, the locking assembly 210 may further include a second mounting base 230, the second mounting base 230 is used to be mounted on the second display box 302, and the locking member 211 is slidably disposed on the second mounting base 230. Fig.19 As shown, the second mounting seat 230 includes a bottom plate 231, the locking member 211 is slidably disposed on the bottom plate 231, a bottom plate through hole 230v is disposed on the bottom plate 231, and the bottom plate through hole 230v is communicated with the slot 200v.

[0153] In some embodiments, Fig. 9 As shown, the cross section of the lock head 1110 gradually increases along the direction close to the first connecting portion 1111. The traction member 212 is an elastic element relatively fixed with the second mounting seat 230 (the "relatively fixed" here means that the position of the traction member 212 relative to the second mounting seat 230 remains fixed, and only the traction member 212 itself is deformed), and is used to provide a force in a third direction for the locking member 211 at least when the lock tongue 110 enters the slot 200v to reach the pre-hanging state, and the third direction is perpendicular to the extension direction of the lock tongue 110. In one example, the third direction is the same as the second direction. Wherein, in the pre-hanging state, the orthographic projection of the slot 200v on the reference plane perpendicular to the first direction partially overlaps with the orthographic projection of the lock head 1110 on the reference plane, and the "partial overlap" here means that a part of the orthographic projection of the lock head 1110 is located inside the orthographic projection of the slot 200v, and another part of the orthographic projection of the lock head 1110 is located outside the orthographic projection of the slot 200v. In some examples, in the pre-hanging state, the traction member 212 can also provide a force along the third direction to the locking member 211, so that the locking member 211 provides a force in the third direction to the first connecting portion 1111 of the lock tongue 110 to prevent the lock tongue 110 from shaking and improve the stability of the lock tongue 110.

[0154] When the first mounting seat 130 and the second mounting seat 230 gradually approach each other, the lock head portion 1110 approaches the slot hole 200v, and because the lock head portion 1110 is a structure that is small at the top and large at the bottom, as the first mounting seat 130 and the second mounting seat 230 approach each other further, the lock head portion 1110 slides into the slot hole 200v along the side wall of the slot hole 200v until the lock head portion 1110 completely passes through the slot hole 200v. Due to the force along the third direction provided by the traction member 212, the locking member 211 is pulled to slide along the third direction until the inner wall of the slot hole 200v contacts the outer surface of the first connecting portion 1111, and the lock head portion 1110 overlaps the locking member 211. When the two display boxes need to be disassembled and separated, the locking member 211 is pushed along a fourth direction opposite to the third direction so that the main body 111 of the slot 200v is aligned with the lock head 1110, and then the first mounting seat 130 and the second mounting seat 230 are moved away from each other so that the lock tongue 110 is disengaged from the slot 200v.

[0155] In one example, if Figure 3 As shown, the slot 200v includes: a main hole portion 201v, and a protrusion 202v located on one side of the main hole portion 201v along its radial direction and connected to the main hole portion 201v; the diameter of the main hole portion 201v is greater than the diameter of the end surface of the lock portion 1110 facing the first connecting portion 1111. The curvature of the protrusion 202v is greater than the curvature of the main hole portion 201v, so that the slot 200v is formed into a gourd shape. In the pre-hanging state, the orthographic projection of the protrusion 202v on the reference surface partially overlaps with the orthographic projection of the lock portion 1110 on the reference surface (that is, a part of the orthographic projection of the lock portion 1110 is located inside the orthographic projection of the protrusion 202v, and the other part is located outside the orthographic projection of the protrusion 202). The third direction is the direction from the protrusion 202v to the main hole portion 201v. By setting the slot 200v to a gourd shape and the diameter of the main hole 201v being larger than the diameter of the end surface of the lock head 1110 facing the first connecting portion 1111, it is easier for the lock tongue 110 to be separated from the slot 200v when the box is disassembled.

[0156] In one example, if Figure 3 As shown, the locking member 211 includes: a locking piece 211a and a first fixing portion 211b and a second fixing portion 211c fixed on the locking piece 211a. The first fixing portion 211b, the second fixing portion 211c and the locking piece 211a can be an integrally formed structure. The slot 200v is provided on the locking piece 211a. Fig. 9As shown, a third fixing portion 211e is provided on one side of the locking member 211 along the third direction, and the third fixing portion 211e is relatively fixed to the second mounting seat 230; the traction member 212 is a torsion spring, which is sleeved on the third fixing portion 211e, and the two ends of the torsion spring are respectively against the first fixing portion 211b and the second fixing portion 211c. When the lock tongue 110 extends into the slot 200v, the surface of the lock head portion 1110 slides along the side wall of the slot 200v, applying a force along the fourth direction to the locking member 211, thereby causing the torsion spring to deform in its winding direction, thereby providing a force along the third direction to the first fixing portion 211b and the second fixing portion 211c.

[0157] For example, when the traction member 212 is not subjected to external force in the third direction and the reverse direction, the torsion spring is in a natural state; when the lock tongue 110 extends into the slot 200v, it drives the locking member 211 to move along the fourth direction, and the torsion spring is in a compressed state in its winding direction, thereby providing a force along the third direction to the locking member 211.

[0158] In one example, if Figure 3 As shown, the locking member 211 also includes a force-applying portion 211d fixed on the locking piece portion 211a, so that when the two display boxes need to be disassembled and separated, it is convenient for the operator to apply a thrust along the fourth direction to the locking member 211, so that the locking tongue 110 is located in the main hole portion 201v, thereby facilitating the locking tongue 110 to be disengaged from the slot hole 200v, thereby achieving complete separation of the locking tongue assembly 100 and the lock slot assembly 200.

[0159] In some embodiments, Fig. 9 , Fig.17 and Fig.19 As shown, the lock slot assembly 200 further includes: a lock cover 220, which is located on a side of the locking member 211 away from the lock tongue assembly 100 and is fixedly connected to the second mounting seat 230. For example, the lock cover 220 is fixedly connected to the second mounting seat 230 by a third fastener 157 (such as a screw). In one example, the third fixing portion 211e can be fixed on the surface of the lock cover 220 facing the locking member 211. Fig. 9 and Fig.19 As shown, the lock slot assembly 200 may further include: an elastic component 240, which is arranged between the lock cover 220 and the locking piece 211. When the lock tongue 110 is in a pre-hanging state, the elastic component 240 is in a compressed state to provide a damping force to the lock tongue 110 to prevent the lock tongue 110 from moving more smoothly in the pre-hanging state and preventing it from colliding with the locking piece 211.

[0160] In some embodiments, Fig. 9 and Fig.19As shown, the elastic component 240 includes: a sleeve 241, an abutment plate 243, and a second elastic member 242. The sleeve 241 is fixedly connected to the lock cover 220, and can be sleeved on the lock head 1110 in a pre-hanging state. The abutment plate 243 is located in the sleeve 241, and can move relative to the sleeve 241 in a first direction. The two ends of the second elastic member 242 are respectively connected to the lock cover 220 and the abutment plate 243. Among them, when the lock tongue 110 is in the pre-hanging state, the second elastic member 242 is in a compressed state, and the abutment plate 243 abuts against the lock tongue 110, so that under the elastic action of the second elastic member 242, a damping force is provided for the movement of the lock tongue 110. In one example, the second elastic member 242 is a spring. The abutment plate 243 is an annular structure, and its inner diameter is smaller than the maximum diameter of the lock portion 1110 ; of course, the abutment plate 243 may also be a planar structure, and its orthographic projection on the reference surface covers the orthographic projection of the lock portion 1110 on the reference surface.

[0161] In some embodiments, Figure 8 , Fig. 9 , Figures 17 to 19 As shown, a positioning column 154 is disposed on one of the first mounting seat 130 and the second mounting seat 230 , and a positioning hole 155 matching the positioning column 154 is opened on the other one. Figure 8 , Fig. 9 , Figures 17 to 19 In the figure, the positioning column 154 is arranged on the first mounting seat 130, and the positioning hole 155 is arranged on the second mounting seat 230. The positioning column 154 can also be arranged on the second mounting seat 230, and the positioning hole 155 can be arranged on the first mounting seat 130. Through the arrangement of the positioning column 154 and the positioning hole 155, the first mounting seat 130 and the second mounting seat 230 can be accurately positioned during the locking process of the lock tongue 110 and the locking assembly 210.

[0162] It should be noted that, in other embodiments, one of the positioning column 154 and the positioning hole 155 may be disposed on the first display box 301 , and the other may be disposed on the second display box 302 .

[0163] The present disclosure also provides a splicing display device, such as Figure 1 As shown, the spliced ​​display device includes a first display box 301 and a second display box 302, and the lock in the above embodiment, the lock tongue assembly 100 of the lock is installed on the first display box 301, and the lock slot assembly 200 of the lock is installed on the second display box 302.

[0164] In some embodiments, the spliced ​​display device is a vertical display device and includes at least one column of display boxes, each column of display boxes includes a plurality of display boxes arranged in sequence from the top to the bottom of the spliced ​​display device. Two adjacent display boxes in the same column are connected by at least two locks to improve the connection stability. Among them, in the two adjacent display boxes in the same column, the display box located at the top is used as the second display box 302, and the display box located at the bottom is used as the first display box 301. That is to say, when the number of display boxes in the same column is greater than 2, a portion of the display boxes are provided with a lock tongue assembly 100 on the top and a lock groove assembly 200 on the bottom, and these display boxes can be used as the first display box 301 or the second display box 302; the top display box in the same column is provided with a lock groove assembly 200 at the bottom, and the top may not be provided with a lock tongue assembly 100; the bottom display box in the same column is provided with a lock tongue assembly 100 at the top, and the bottom may not be provided with a lock groove assembly 200.

[0165] The present disclosure also provides an assembly method of a spliced ​​display device, the method comprising at least one cabinet assembly process, the cabinet assembly process comprising:

[0166] S1. Move the first display box closer to the second display box until the locking tongue 110 on the first display box and the locking assembly 210 on the second display box reach a pre-hanging state.

[0167] S2. Use the driving assembly 120 on the first display box to drive the locking tongue 110 in the pre-hanging state to move in a direction from the second display box 302 to the first display box 301 until the locking tongue 110 is locked with the locking assembly 210.

[0168] In some embodiments, step S2 specifically includes: using the control member 143 to control the second pressing piece 142 to move away from the first pressing piece 141 so that the limiting protrusion 163 is located outside the second limiting groove 164v. Afterwards, the driving member 121 is controlled to rotate around the axis of the first shaft hole to drive the lock tongue 110 to move in a direction from the second display box 302 to the first display box 301 until the lock tongue 110 is locked with the locking assembly 210.

[0169] In some embodiments, the spliced ​​display device is a vertical display device and includes at least one column of display boxes, each column of display boxes includes a plurality of display boxes arranged in sequence from the top to the bottom of the spliced ​​display device. In this case, when assembling a plurality of display boxes in the same column, they are assembled one by one. Specifically, starting from the second display box, each display box is assembled with the previous display box in sequence according to the box assembly process of steps S1 and S2 above. Among them, the display box to be assembled is used as the first display box 301, and the previous display box is used as the second display box 302. For example, the second display box is first used as the first display box 301, the first display box is used as the second display box 302, and assembled according to steps S1 and S2; then, the third display box is used as the first display box 301, the second display box is used as the second display box 302, and assembled according to steps S1 and S2; and so on, until all the multiple display boxes in a column are assembled. The first, second and third display boxes mentioned above refer to the first, second and third display boxes arranged from the top to the bottom of the spliced ​​display device.

[0170] The assembly process of the first display box 301 and the second display box 302 will be described in detail below with reference to the accompanying drawings.

[0171] When assembling the first display box 301 and the second display box 302, the driving member 121 can be used as a handle. The operator lifts the first display box 301 with the handle, and the lock tongue 110 naturally extends out under the action of gravity; the first display box 301 is moved close to the second display box 302 until the lock head 1110 of the lock tongue 110 passes through the slot 200v on the locking member 211. At this time, under the elastic action of the traction member 212, the locking member 211 is driven to move along the third direction, so that the inner wall of the slot 200v contacts the first connecting portion 1111 of the lock tongue 110, the lock head 1110 overlaps the locking member 211, and the lock tongue 110 and the locking assembly 210 reach a pre-hanging state. Afterwards, the pressing portion 1431 of the control member 143 is pressed, and the driving member 121 is rotated counterclockwise at the same time, so that the limiting protrusion 163 on the second pressing piece 142 is disengaged from the second limiting groove 164v; the pressing portion 1431 is released, so that the first elastic member 144 applies a force along the second direction to the pressing portion 1431 of the control member 143, thereby causing the second pressing piece 142 to move closer to the first pressing piece 141, and the first matching portion 165 and the second matching portion 166 cooperate with each other, and the first limiting component reaches a limited state; continue to rotate The driving member 121 is rotated, thereby driving the rotating member 123 and the cam 122 to rotate synchronously. When the cam 122 rotates to the point where the first end 1221 abuts against the abutting surface 130s of the first mounting seat 130, the rotating member 123 is acted upon by the abutting force between the cam 122 and the first mounting seat 130, and moves in a direction away from the lock slot assembly 200, thereby driving the lock tongue 110 to move in a direction from the second display box body 302 to the first display box body 301, until the lock tongue 110 is pressed against the locking member 211 to reach a locked state.

[0172] When the first display box 301 and the second display box 302 are disassembled and separated, the control member 143 can be pressed, so that the control member 143 is used to push the second pressing piece 142 to move away from the first pressing piece 141, and the first limiting component reaches the released state; in the process of pressing the control member 143, the driving member 121 is rotated clockwise, thereby driving the rotating member 123 and the cam 122 to rotate synchronously, and when the cam 122 rotates to the second end 1222 and the abutting surface 130s of the first mounting seat 130 are arranged opposite to each other, at this time, the lock tongue 110 and the locking assembly reach the pre-hanging state; when the limiting protrusion 163 on the second pressing piece 142 is aligned with the second limiting protrusion 163, the locking tongue 110 and the locking assembly reach the pre-hanging state. When the grooves 164v are opposite to each other, the control member 143 is released, so that the first elastic member 144 applies a force along the second direction to the pressing portion 1431 of the control member 143, thereby causing the second pressing piece 142 to move closer to the first pressing piece 141, and the limiting protrusion 163 extends into the second limiting groove 164v, and the driving member 121 cannot continue to rotate; thereafter, a thrust is applied to the force-applying portion 211d of the locking member 211 along the fourth direction, so that the locking tongue 110 is located in the main hole portion 201v of the slot 200v, and then the first display box 301 and the second display box 302 are moved away from each other, thereby driving the locking tongue 110 to completely disengage from the slot 200v.

[0173] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A lock, characterized in that: include: A lock tongue assembly, used for being mounted on the first display box; the lock tongue assembly comprises a lock tongue and a driving assembly connected to the lock tongue; A lock slot assembly, used for being mounted on the second display box; the lock slot assembly comprises a locking assembly having a slot hole; The driving assembly is configured to, in a first state, enable the lock tongue and the locking assembly to reach a pre-hanging state; and, in a second state, drive the lock tongue in the pre-hanging state to move in a direction from the second display box to the first display box until the lock tongue and the locking assembly are locked; The pre-hanging state is a state in which the lock tongue and the locking assembly are in contact and can move relative to each other within a predetermined distance range in a first direction, wherein the first direction is an arrangement direction of the lock tongue assembly and the lock slot assembly.

2. The lock according to claim 1, characterized in that: The locking tongue assembly further comprises: a first mounting seat fixed on the first display box, the first mounting seat having a first mounting hole; The locking tongue comprises: a main body portion passing through the first mounting hole, and a controlled portion connected to the main body portion, wherein the controlled portion has a first axial hole; The driving assembly comprises: a driving member and a transmission mechanism connected to the driving member; The driving member is configured to rotate around the axis of the first shaft hole in the second state; The transmission mechanism passes through the first shaft hole and is configured to convert the rotational motion of the driving member into the linear motion of the locking tongue in the first direction in the second state.

3. The lock according to claim 2, characterized in that: The transmission mechanism comprises: A rotating member, the rotating member comprising: a rotating shaft portion and a first engaging portion fixed to one end of the rotating shaft portion, the rotating shaft portion being arranged through the first shaft hole and being capable of relatively rotating with the locking tongue; A cam, the cam is sleeved on the first engaging portion and can rotate synchronously with the rotating member; Wherein, the driving member is arranged on a side of the cam away from the controlled portion and is fixedly connected to the first engaging portion.

4. The lock according to claim 3, characterized in that: The driving member has a clamping groove matching the first clamping portion; the first clamping portion is clamped in the clamping groove; A first limiting groove is arranged on the side wall of the first engaging portion, and the first limiting groove is arranged around the axis of the rotating member. A limiting pin is arranged in the engaging groove, and at least a part of the limiting pin is located in the first limiting groove.

5. The lock according to claim 3, characterized in that: The cam includes a first end; The cam is configured to rotate in the second state until the first end abuts against the first mounting seat, so that the locking tongue moves in a direction away from the locking slot assembly until the locking tongue is locked with the locking assembly.

6. The lock according to claim 5, characterized in that: In the second state, the rotating member is configured to be acted upon by the cam abutting force and move in a direction away from the lock slot assembly, and the locking tongue is configured to be driven by the rotating member and move in a direction from the second display box to the first display box.

7. The lock according to claim 5, characterized in that: In the pre-hanging state, the first end portion and the first mounting seat are not in contact with each other.

8. The lock according to claim 7, characterized in that: The first mounting seat further comprises an abutting surface, and in the second state, the first end of the cam abuts against the abutting surface; the cam further comprises a second end, and the distance from the edge of the second end to the center of the first engaging portion is smaller than the distance from the edge of the first end to the center of the first engaging portion; In the pre-hanging state, the second end portion is arranged opposite to the abutting surface; Wherein, the second end portion is spaced apart from the abutting surface, or, The second end portion and the abutting surface are in contact with each other but no interaction force exists, or, The second end abuts against the abutment surface, and the distance between the abutment position when the second end abuts against the abutment surface and the center of the first engaging portion is smaller than the distance between the abutment position when the first end abuts against the abutment surface and the center of the first engaging portion.

9. The lock according to claim 3, characterized in that: The locking tongue assembly also includes: A first limiting component is connected to the rotating member and is configured to switch between a limiting state and a released state; wherein the first limiting component can limit the rotating member to rotate along a target rotation direction in the limiting state; and release the limitation on the rotation direction of the rotating member in the released state.

10. The lock according to claim 9, characterized in that: The rotating member further comprises a second engaging portion fixed to an end of the rotating shaft portion away from the first engaging portion; The first limiting component includes: A first pressing piece, which is sleeved on the second clamping portion and can rotate synchronously with the second clamping portion; a first matching portion is provided on a surface of the first pressing piece away from the rotating shaft portion; A second pressing sheet, arranged opposite to the first pressing sheet, wherein a second matching portion is arranged on a surface of the second pressing sheet facing the first pressing sheet; A control member is fixedly connected to the second pressing plate, and is used to control the second pressing plate to move relative to the first pressing plate along the axial direction of the rotating shaft; wherein, when the second pressing plate approaches the first pressing plate so that the first matching portion and the second matching portion match each other, the first limiting component reaches the limited state; when the second pressing plate moves away from the first pressing plate so that the first matching portion and the second matching portion are released from matching, the first limiting component reaches the released state.

11. The lock according to claim 10, characterized in that: The first mounting seat has a first rotation limit portion and a second rotation limit portion, the first rotation limit portion and the second rotation limit portion define a rotation limit gap matching the second pressing plate, the second pressing plate is located in the rotation limit gap, and the rotation limit gap is used to limit the rotational freedom of the second pressing plate around the axis of the rotating shaft portion.

12. The lock according to claim 10, characterized in that: The first matching portion includes a plurality of first ratchet teeth arranged around the axis of the rotating shaft portion, the tooth tips of the first ratchet teeth point to the second pressing piece; along the target rotation direction, the height of the first ratchet teeth gradually decreases; the second matching portion includes a plurality of second ratchet teeth arranged around the axis of the rotating shaft portion, the tooth tips of the second ratchet teeth point to the first pressing piece; along the target rotation direction, the height of the second ratchet teeth gradually increases; or, The first matching portion includes a plurality of first ratchet teeth arranged around the axis of the rotating shaft portion, the tips of the first ratchet teeth point to the second pressing piece; along the target rotation direction, the height of the first ratchet teeth gradually decreases; the second matching portion includes a plurality of second grooves arranged around the axis of the rotating shaft portion, and along the target rotation direction, the depth of the second grooves gradually decreases; or, The first matching portion includes a plurality of first grooves arranged around the axis of the rotating shaft portion, and the depth of the first grooves gradually increases along the target rotation direction; the second matching portion includes a plurality of second ratchet teeth arranged around the axis of the rotating shaft portion, and the tooth tips of the second ratchet teeth point to the first pressing piece; along the target rotation direction, the height of the second ratchet teeth gradually increases.

13. The lock according to claim 10, characterized in that: The control member passes through the driving member, the cam, the rotating member and the first pressing sheet in sequence; The first limiting component also includes a first elastic member, one end of which is connected to the driving member, and the other end is connected to the control member, and the first elastic member is used to apply an elastic force from the second pressing piece to the first pressing piece to the control member.

14. The lock according to claim 13, characterized in that: The control member includes a pressing portion and a connecting rod portion, wherein the connecting rod portion sequentially passes through the driving member, the cam, the rotating member and the first pressing sheet, one end of the connecting rod portion is fixedly connected to the second pressing sheet, and the other end of the connecting rod portion is fixedly connected to the pressing portion; The driving member has a receiving groove, at least part of the first elastic member is located in the receiving groove, and two ends are respectively connected to the inner wall of the receiving groove and the pressing portion; the first elastic member is in a compressed state or a natural state when not subjected to pressing force.

15. The lock according to claim 10, characterized in that: The locking tongue assembly also includes: A second limiting component is disposed on at least one of the first pressing plate and the second pressing plate, and is used to limit a rotation start position and / or a rotation end position of the first pressing plate when the first pressing plate rotates relative to the second pressing plate.

16. The lock according to claim 15, characterized in that: The second limiting component includes: A lug, arranged at an edge of the first pressing sheet; A first stopper and a second stopper are arranged on a surface of the second pressing sheet facing the first pressing sheet; When the first pressing plate rotates relative to the second pressing plate, the lug moves between the first stopper and the second stopper.

17. The lock according to claim 16, characterized in that: A limiting protrusion is also provided on the second pressing plate, and the limiting protrusion is located between the first stopper and the second stopper; the height of the limiting protrusion is smaller than the height of either the first stopper or the second stopper; The lug is also provided with a second limiting groove matching the limiting protrusion.

18. The lock according to claim 17, characterized in that: The distance between the limiting protrusion and the first stopper is smaller than the distance between the limiting protrusion and the second stopper.

19. The lock according to any one of claims 2 to 18, characterized in that: A slider is arranged on one of the main body of the locking tongue and the first mounting seat, and a slideway is arranged on the other; the slideway extends along the first direction; and the slideway is slidably arranged on the slideway.

20. The lock according to any one of claims 1 to 18, characterized in that: The lock tongue comprises a main body, the main body comprises a lock portion, a first connecting portion and a second connecting portion connected in sequence along the first direction, the second connecting portion is connected to the driving assembly; the diameter of the end surface of the lock portion facing the first connecting portion and the diameter of the end surface of the second connecting portion facing the first connecting portion are both larger than the diameter of the first connecting portion; The locking assembly comprises: A locking piece, wherein the slot is formed on the locking piece; a traction member connected to the locking member and configured to allow the locking portion to pass through the slot until the locking member contacts an outer wall of the first connecting portion; Wherein, in the pre-hanging state, the locking member and the first connecting portion can move relative to each other in the first direction; when the locking tongue and the locking assembly are locked, the locking portion is pressed onto the locking member.

21. The lock according to claim 20, characterized in that: The lock slot assembly further comprises: a second mounting seat for mounting on the second display box; the locking member is slidably disposed on the second mounting seat; The cross section of the locking portion gradually increases in a direction approaching the first connecting portion; The traction member is an elastic element relatively fixed to the second mounting seat and is used to provide a force along a third direction to the locking member at least when the locking tongue enters the slot to reach the pre-hanging state, and the third direction is perpendicular to the extension direction of the locking tongue; Wherein, in the pre-hanging state, an orthographic projection of the slot on a reference plane perpendicular to the first direction partially overlaps with an orthographic projection of the lock portion on the reference plane.

22. The lock according to claim 21, characterized in that: The slot hole comprises: a main hole portion, and a protrusion portion located on one side of the main hole portion along the radial direction and connected to the main hole portion; the third direction is the direction in which the protrusion portion points to the main hole portion; The diameter of the main hole portion is larger than the diameter of the end surface of the locking portion facing the first connecting portion; In the pre-hanging state, the orthographic projection of the protruding portion on the reference surface partially overlaps with the orthographic projection of the locking portion on the reference surface.

23. The lock according to claim 21, characterized in that: The locking member comprises: a locking piece portion and a first fixing portion and a second fixing portion fixed on the locking piece portion, and the slot is provided on the locking piece portion; The locking member is provided with a third fixing portion on one side along the third direction, and the third fixing portion is relatively fixed to the second mounting seat; the traction member is a torsion spring, and the torsion spring is sleeved on the third fixing portion, and the two ends of the torsion spring are respectively against the first fixing portion and the second fixing portion, and when the locking tongue contacts the locking member, the torsion spring is deformed in its winding direction, thereby providing a force along the third direction to the first fixing portion and the second fixing portion.

24. The lock according to claim 21, characterized in that: The lock slot assembly also includes: A lock cover, located at a side of the locking member away from the lock tongue assembly and fixedly connected to the second mounting seat; An elastic component is arranged between the lock cover and the locking member. When the lock tongue is in the pre-hanging state, the elastic component is in a compressed state to provide a damping force to the lock tongue.

25. The lock according to claim 24, characterized in that The elastic component comprises: A shaft sleeve, which is fixedly connected to the lock cover and can be sleeved on the lock head in the pre-hanging state; an abutment plate, the abutment plate being located in the shaft sleeve and being capable of relative movement with the shaft sleeve in the first direction; A second elastic member, two ends of which are respectively connected to the locking cover and the abutting plate; Wherein, when the locking tongue is in the pre-hanging state, the second elastic member is in a compressed state, and the abutting plate abuts against the locking tongue.

26. The lock according to any one of claims 1 to 18, characterized in that: The locking tongue assembly further comprises: a first mounting seat for mounting on the first display box; The lock slot assembly further comprises: a second mounting seat for mounting on the second display box; the locking assembly is arranged on the second mounting seat; Wherein, one of the first mounting seat and the second mounting seat is provided with a positioning column, and the other is provided with a positioning hole matching with the positioning column.

27. A splicing display device, characterized in that: The invention comprises a first display box and a second display box, and the lock according to any one of claims 1 to 25, wherein the lock tongue assembly of the lock is mounted on the first display box, and the lock slot assembly of the lock is mounted on the second display box.

28. The splicing display device according to claim 27, characterized in that: One of the first display box and the second display box is provided with a positioning column, and the other is provided with a positioning hole matching the positioning column; and / or, The locking tongue assembly also includes: a first mounting seat for mounting on the first display box; the locking slot assembly also includes: a second mounting seat for mounting on the second display box; a positioning column is provided on one of the first mounting seat and the second mounting seat, and a positioning hole matching the positioning column is opened on the other.

29. The splicing display device according to claim 27, characterized in that: The spliced ​​display device is a vertical display device and includes at least one column of display boxes, each column of the display boxes includes a plurality of the display boxes arranged in sequence from the top to the bottom of the spliced ​​display device; Two adjacent display boxes in the same column are connected by at least two locks, wherein, among the two adjacent display boxes in the same column, the display box located on the upper side serves as the second display box, and the display box located on the lower side serves as the first display box.

30. The splicing display device according to claim 27, characterized in that: The spliced ​​display device further includes a plurality of display modules, and the first display box and the second display box are both used to support at least one of the display modules.

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