Rear housing display attachment for a display screen

Abstract

This invention discloses a back cover display connection device for a display screen, including a display component, a back cover, a locking rod, a locking sleeve, an unlocking limiting part, and a reset member. The display component is provided with a mounting hole, and the locking rod is slidably disposed within the mounting hole, the locking rod having a locking groove. The locking sleeve is disposed on the back cover along the x-direction, and a locking tongue is slidably disposed on the side wall of the locking sleeve, the locking tongue having a locking spring. When the display component is fastened to the back cover, the locking rod is inserted into the locking sleeve, and the locking tongue abuts against the locking groove. The unlocking limiting part is disposed on the back cover, and when the locking tongue is fully extended from the locking sleeve, the unlocking limiting part is triggered to lock the locking tongue. The locking rod has an unlocking protrusion located between the locking groove and the display panel. The reset member is disposed on the back cover and is used to release the locking tongue from the unlocking limiting part. This invention has an ingenious structure, features simple and quick assembly and disassembly of the display component, and has high security.

Description

Technical Field

[0001] This invention belongs to the field of display screen technology, and specifically relates to a back cover display connection device for a display screen. Background Technology

[0002] With the increasing maturity of LED display technology, LED displays have become a common display tool for both indoor and outdoor use. Furthermore, various large-scale LED displays have been widely installed in outdoor environments such as high-rise buildings and steel structures for display and advertising purposes.

[0003] When installing a display screen, magnetic attraction or hook-and-hanging components are typically used to attach the screen to the cabinet. For example, in the Chinese utility model patent with publication number CN212647813U, entitled "Display Screen Assembly," an anti-detachment structure is used on the back of the display unit to rotate and hook onto the locking part of the cabinet to achieve a stable assembly. However, when disassembling the display unit, the anti-detachment structure rotates and disengages, releasing the lock. Due to the complete separation of the connecting parts between the display screen and the cabinet, the display screen is very likely to fall under its own weight the moment the anti-detachment structure is released. This can cause damage to the display screen, and the fall of a large display screen can easily lead to a safety accident, posing a high safety hazard. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a back cover display connection device for a display screen, which has an ingenious structure that enables rapid installation and removal of the display components while ensuring safety during the installation and removal of the display components.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] The display screen back cover connection device includes a display component and a back cover. Let the direction perpendicular to the plane containing the display component be the x-axis, and the direction perpendicular to the x-axis be the y-axis. It includes:

[0007] The display component is provided with a mounting hole, and the locking rod is slidably disposed in the mounting hole along the x-direction. The locking rod is provided with a locking groove.

[0008] A locking sleeve is disposed on the back cover along the x-direction. The side wall of the locking sleeve is provided with a through hole, and a locking tongue is slidably disposed in the through hole. The locking tongue is provided with a locking spring so that the locking tongue extends into or out of the locking sleeve along the y-direction. When the display component is fastened to the back cover, the locking rod is inserted into the locking sleeve, and the locking tongue abuts against the locking groove.

[0009] An unlocking limiter, disposed on the back cover, is triggered to lock the bolt when the bolt is fully extended from the lock sleeve. The locking bar is equipped with an unlocking protrusion located between the lock groove and the display panel. As the locking bar continues to be inserted into the lock sleeve along the x-axis, the unlocking protrusion can push the bolt to move along the y-axis to fully extend from the lock sleeve; and...

[0010] A reset element, disposed on the back cover, is used to release the locking tongue of the unlocking limit part.

[0011] The unlocking limiting part includes:

[0012] The first sleeve is slidably disposed along the y-direction. The locking spring is disposed inside the first sleeve. A limit rod is disposed at the end of the latch away from the locking rod, and the locking spring is connected to the outer wall of the latch end. The limit rod is slidably disposed inside the first sleeve. When the latch is fully extended out of the lock sleeve, the limit rod contacts the inner wall of the first sleeve and drives the first sleeve to slide along the y-direction.

[0013] A fixing member is slidably disposed on the outer wall of the lock sleeve along the x-direction, and a rod is connected to the other end of the fixing member, which is equipped with an unlocking spring.

[0014] A locking element is disposed on the outer wall of the first sleeve. The locking element has a pushing slope on the side near the fixing element, and the pushing slope is slidably engaged with the fixing element. The fixing element has a pressing surface on the side near the locking rod. When the first sleeve moves along the y direction, the pushing slope can push the fixing element to move along the x direction.

[0015] The locking element includes a connecting block, a push rod hinged to the connecting block, and an elastic element disposed between the push rod and the first sleeve. The push rod has an inclination angle α with the straight line in the y direction, the outer wall of the push rod forms a pushing slope, and the end face of the push rod away from the hinge point is a pressing surface.

[0016] The reset component includes:

[0017] The locking tongue reset assembly includes a fixedly disposed second sleeve and a first reset spring disposed within the second sleeve. The first sleeve is slidably disposed within the second sleeve and is connected to the second sleeve. The elastic coefficient of the first reset spring is greater than that of the locking spring.

[0018] The fixing component reset assembly includes a connecting rod that slides along the y-direction. The connecting rod is equipped with a driving block that slides in contact with the end of the rod. When the driving connecting rod slides along the y-direction, the driving block can push the rod to move the top component along the x-direction.

[0019] The connecting rod is equipped with a second return spring. One end of the connecting rod is a reset trigger part, which penetrates into the lock sleeve and is located between the lock tongue and the lock sleeve port. The lock rod is equipped with a reset protrusion ring, which can push the reset trigger part to move along the y direction.

[0020] An installation sleeve is embedded in the mounting hole, and a pressing spring is disposed inside the installation sleeve. The end of the locking rod is connected to the pressing spring.

[0021] The reset protrusion contacts the inner wall of the locking sleeve, and the outer wall of the reset protrusion is provided with an anti-slip layer.

[0022] The locking bar has a cone block at the end away from the display component, and the locking tongue has a push-up slope that matches the cone block.

[0023] Both the unlocking spring and the second reset spring are equipped with spring sleeves, and the spring sleeves are respectively fitted onto the outer walls of the rod and the connecting rod. The spring sleeves are fixedly installed on the back shell.

[0024] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0025] This invention utilizes a locking rod and a locking sleeve. During the assembly of the display component, the component is aligned with the back cover and fastened to it. The locking rod is inserted into the locking sleeve. As the locking rod moves along the x-axis, its end contacts the latch, pushing the latch outward along the y-axis, compressing the locking spring. With continued insertion, the locking groove aligns with the latch, and the spring force forces the latch to insert and press against the groove, completing the assembly of the display component. Assembly is simple and quick, and the assembled component exhibits good stability. During disassembly, the locking rod is pressed and pushed inward from the outside using the mounting hole, causing the latch to contact the unlocking ring. The unlocking ring pushes the latch completely out of the locking sleeve, triggering the unlocking limit part to lock the latch, thus allowing the display component to be removed and the locking rod to disengage from the locking sleeve, completing the disassembly. This simple and quick operation, combined with the enhanced security of the display component after unlocking, ensures that the locking rod remains inserted into the locking sleeve. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the longitudinal cross-sectional structure of the present invention;

[0028] Figure 2 This is a schematic diagram showing the connection relationship between the locking rod and the locking sleeve in this invention;

[0029] Figure 3 This is a schematic diagram showing the connection relationship between the unlocking limiting part and the reset part in this invention.

[0030] Icons: 1-Display component, 10-Mounting hole, 11-Mounting sleeve, 12-Pressing spring, 2-Back shell, 3-Locking rod, 31-Locking groove, 32-Unlocking protrusion ring, 33-Conical block, 4-Locking sleeve, 41-Through hole, 51-First sleeve, 52-Locking component, 521-First pushing slope, 522-Firming surface, 523-Connecting block, 524-Push rod, 525-Elastic component, 53-Fixing component, 531-Rod, 532-Unlocking spring, 611-Second sleeve, 612-First return spring, 621-Connecting rod, 6210-Reset trigger, 622-Drive block, 623-Second pushing slope, 624-Second return spring, 7-Lock tongue, 71-Locking spring, 72-Limiting rod, 73-Third pushing slope, 8-Spring sleeve. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that if terms such as "inner" or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "configure," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example

[0037] Please refer to Figure 1-3 The back shell display connection device of the display screen provided in this embodiment includes a display component 1, a back shell 2, a locking rod 3, a locking sleeve 4, an unlocking limit part and a reset part. Let the direction perpendicular to the plane where the display component 1 is located be the x-direction, and the direction perpendicular to the x-direction be the y-direction.

[0038] The display component 1 is provided with a mounting hole 10, and the locking rod 3 is slidably disposed in the mounting hole 10 along the x direction. The locking rod 3 is provided with a locking groove 31.

[0039] The locking sleeve 4 is disposed on the back shell 2 along the x-direction. The side wall of the locking sleeve 4 is provided with a through hole 41. A locking tongue 7 is slidably disposed in the through hole 41. The locking tongue 7 is provided with a locking spring 71 so that the locking tongue 7 extends into or out of the locking sleeve 4 along the y-direction. When the display component 1 is fastened to the back shell 2, the locking rod 3 is inserted into the locking sleeve 4 and the locking tongue 7 abuts against the locking groove 31. Preferably, the locking rod 3 and the locking sleeve 4 can be set in multiple sets. As shown in this embodiment, two sets of locking rod 3 and locking sleeve 4 are symmetrically arranged to improve the stability when the display component 1 is assembled with the back shell 2.

[0040] The unlocking limit part is configured on the back shell 2. When the lock tongue 7 is fully extended out of the lock sleeve 4, the unlocking limit part is triggered to lock the lock tongue 7. The lock rod 3 is configured with an unlocking protrusion 32, which is located between the lock groove 31 and the display panel. When the lock rod 3 continues to be inserted into the lock sleeve 4 along the x direction, the unlocking protrusion 32 can push the lock tongue 7 to move along the y direction to fully extend out of the lock sleeve 4.

[0041] A reset element is disposed on the back cover 2, which is used to release the locking tongue 7 of the unlocking limit part.

[0042] With the above settings, when assembling the display component 1, the display component 1 is aligned with the back cover 2 and then fastened to the back cover 2. The locking rod 3 is inserted into the locking sleeve 4 accordingly. As the locking rod 3 moves and inserts along the x-direction, the end of the locking rod 3 contacts the locking tongue 7, pushing the locking tongue 7 to move outward along the y-direction. The locking spring 71 is compressed. As the locking rod 3 continues to be inserted, the locking groove 31 moves to align with the locking tongue 7. The elastic force of the locking spring 71 drives the locking tongue 7 to insert and press against the locking groove 31, completing the assembly of the display component 1. The assembly is simple and quick. When disassembling the display component 1... By pressing and pushing the locking rod 3 from the outside using the mounting hole 10, the locking rod 3 moves inward, and the locking tongue 7 contacts the unlocking protrusion 32. The unlocking protrusion 32 is used to completely push the locking tongue 7 out of the lock sleeve 4, triggering the unlocking limit part to restrict and lock the locking tongue 7, thereby removing the display component 1 and disengaging the locking rod 3 from the lock sleeve 4, completing the disassembly of the display component 1. The operation is simple and quick. After unlocking, because the locking rod 3 remains inserted into the lock sleeve 4, the display component 1 will not fall off after unlocking. The operation is convenient and has higher security.

[0043] Please refer to Figure 2 and Figure 3 The unlocking limiting part includes a first sleeve 51, a locking member 52, and a fixing member 53;

[0044] The first sleeve 51 is slidably disposed on the outer wall of the lock sleeve 4 in the y direction. The locking spring 71 is disposed inside the first sleeve 51. The end of the locking tongue 7 away from the locking rod 3 is provided with a limiting rod 72, and the outer wall of the end of the locking tongue 7 is connected to the locking spring 71. The limiting rod 72 is slidably disposed inside the first sleeve 51. When the locking tongue 7 is fully extended out of the lock sleeve 4, the limiting rod 72 contacts the inner wall of the first sleeve 51 and drives the first sleeve 51 to slide in the y direction.

[0045] The fixing member 53 is slidably disposed on the outer wall of the locking sleeve 4 along the x direction, and the other end of the fixing member 53 is connected to the rod 531, which is equipped with an unlocking spring 532;

[0046] The locking member 52 is disposed on the outer wall of the first sleeve 51. The locking member 52 has a first pushing inclined surface 521 on the side near the fixing member 53. The first pushing inclined surface 521 is slidably engaged with the end of the fixing member 53. The fixing member 53 has a pressing surface 522 on the side near the locking rod 3. When the first sleeve 51 moves in the y direction, the first pushing inclined surface 521 can push the fixing member 53 to move in the x direction.

[0047] With the above settings, during the assembly of display component 1, as the locking rod 3 is inserted into the locking sleeve 4, the locking tongue 7 moves outward, causing the limiting rod 72 to move. At this time, the limiting rod 72 does not contact the inner wall of the first sleeve 51, so the limiting rod 72 will not exert a pushing force on the first sleeve 51, and the first sleeve 51 is in a stationary state. This allows the locking tongue 7 to be inserted into the locking groove 31 and abut against the locking rod 3 under the action of the locking spring 71 when the locking groove 31 is aligned with the locking tongue 7. When the locking rod 3 is pushed or pressed inward from the mounting hole 10, the locking tongue 7 is pushed out of the locking groove 31, and under the action of the unlocking protrusion 32, the locking tongue 7... When the lock sleeve 4 is fully extended, the limiting rod 72 contacts the first sleeve 51 and applies a pushing force. The first sleeve 51 moves along the y-direction, causing the locking member 52 to move. Under the action of the first pushing inclined surface 521 of the locking member 52, the fixing member 53 is pushed away from the first sleeve 51 along the x-direction. The unlocking spring 532 is compressed. As the locking member 52 continues to move, the fixing member 53 passes over the locking member 52. Under the action of the unlocking spring 532, the fixing member 53 approaches the first sleeve 51 along the x-direction. The locking tongue 7 is locked by the abutting surface 522 of the locking member 52, preventing the locking tongue 7 from extending into the lock sleeve 4.

[0048] In this embodiment, the locking member 52 further includes a connecting block 523, a push rod 524 hinged to the connecting block 523, and an elastic member 525 disposed between the push rod 524 and the first sleeve 51. In this embodiment, the elastic member 525 is a metal spring sheet; in other embodiments, the elastic member 525 may be a spring. The push rod 524 has an inclination angle α with the straight line containing the y-direction. The outer wall of the push rod 524 forms a first pushing inclined surface 521, and the end face of the push rod 524 away from the hinge point is a pressing surface 522. The hinged push rod 524 and elastic member 525 make pushing the fixing member 53 smoother and less strenuous.

[0049] In other embodiments, the locking member 52 may be a trapezoidal block, with the inclined surface of the trapezoidal block serving as the first pushing inclined surface 521 and the large end face of the trapezoidal block serving as the abutting surface 522, thereby realizing the function of pushing and fixing member 53 to lock the locking tongue 7.

[0050] Please refer to Figure 2 and Figure 3 The reset component includes a locking tongue 7 reset assembly and a fixing component 53 reset assembly.

[0051] The locking tongue 7 reset assembly includes a fixedly disposed second sleeve 611 and a first reset spring 612 disposed within the second sleeve 611. The first sleeve 51 is slidably disposed within the second sleeve 611 and is connected to the second sleeve 611. The elastic coefficient of the first reset spring 612 is greater than that of the locking spring 71. Preferably, the elastic coefficient of the first reset spring 612 is much greater than that of the locking spring 71.

[0052] The fixing member 53 reset assembly includes a connecting rod 621 that slides along the y-direction. The connecting rod 621 is equipped with a driving block 622, which slides in contact with the end of the rod 531. When the driving connecting rod 621 slides along the y-direction, the driving block 622 can push the rod 531 to move the top member along the x-direction. Specifically, the driving block 622 has a second pushing inclined surface 623, which pushes the rod 531 to move along the x-direction.

[0053] With the above configuration, utilizing the second sleeve 611 and the first return spring 612, when the locking tongue 7 moves along the y-direction and drives the limiting rod 72 to move, since the elastic coefficient of the first return spring 612 is greater than that of the locking spring 71, the first sleeve 51 remains relatively stationary under the action of the first return spring 612, and the locking spring 71 is compressed. When the limiting rod 72 contacts the inner wall of the first sleeve 51 and continues to move, the limiting rod 72 pushes the first sleeve 51 to move and compress the first return spring 612, and the locking member 52 pushes the fixing member 53. The locking member 52 cooperates with the fixing member 53 to lock. When the locking member 52 is released, the driving link 621 slides along the y-direction, thereby driving the driving block 622 to drive the rod 531 and the fixing member 53 to move along the x-direction. The fixing member 53 moves away from the first sleeve 51 and disengages from the locking member 52. Thus, under the action of the first return spring 612, the first sleeve 51 moves to the y-direction to reset, and the locking tongue 7 extends into the lock sleeve 4 to achieve reset.

[0054] In this embodiment, the connecting rod 621 is further equipped with a second return spring 624. One end of the connecting rod 621 is a return trigger part 6210, which penetrates into the lock sleeve 4 and is located between the bolt 7 and the port of the lock sleeve 4. The locking rod 3 is equipped with a return protrusion ring, which can push the return trigger part 6210 to move in the y-direction. By using the return protrusion ring, when the locking rod 3 is inserted into the lock sleeve 4, the return protrusion ring of the locking rod 3 first contacts the return trigger part 6210 and pushes the connecting rod 621, thereby resetting the bolt 7. This achieves the effect of automatic reset of the bolt 7, which is simple and convenient to use.

[0055] In this embodiment, the unlocking spring 532 and the second reset spring 624 are both equipped with spring sleeves 8. The spring sleeves 8 are respectively fitted on the outer walls of the rod 531 and the connecting rod 621. The spring sleeves 8 are fixedly installed on the back shell 2, and the spring sleeves 8 are used to limit the movement direction of the rod 531 and the connecting rod 621.

[0056] Please refer to Figure 1 and Figure 2 The mounting hole 10 is fitted with a mounting sleeve 11, and a pressing spring 12 is disposed inside the mounting sleeve 11. The end of the locking rod 3 is connected to the pressing spring 12.

[0057] In this embodiment, the reset protrusion contacts the inner wall of the lock sleeve 4, and the outer wall of the reset protrusion is provided with an anti-slip layer. The anti-slip layer increases the friction coefficient between the lock rod 3 and the lock sleeve 4, thereby further preventing the display component 1 from falling off when the lock tongue 7 is released, and improving security.

[0058] Please refer to Figure 2 The locking rod 3 has a cone block 33 at the end away from the display component 1, and the locking tongue 7 has a third pushing slope 73 that matches the cone block 33. The third pushing slope facilitates the insertion of the locking rod 3. Specifically, in this embodiment, a locking groove 31 is formed between the cone block 33 and the locking rod 3. In this embodiment, the unlocking protrusion 32 is also used as a reset protrusion. In other embodiments, the unlocking protrusion 32 and the reset protrusion are set separately.

[0059] The working principle of this embodiment is as follows:

[0060] When assembling the display component 1, the display component 1 is aligned with the back shell 2 and then fastened to the back shell 2. The locking rod 3 is inserted into the locking sleeve 4 accordingly. As the locking rod 3 moves and inserts along the x-direction, the cone block 33 at the end of the locking rod 3 contacts the locking tongue 7, pushing the locking tongue 7 to move outward along the y-direction. The locking spring 71 is compressed by force. As the locking rod 3 continues to be inserted, the locking groove 31 moves to align with the locking tongue 7. The elastic force of the locking spring 71 drives the locking tongue 7 to insert and press against the locking groove 31, thus completing the assembly of the display component 1. The assembly is simple and quick.

[0061] When disassembling the display component 1, pressing the locking lever 3 causes it to move inward. The locking tongue 7 contacts the unlocking protrusion 32, and the locking tongue 7 drives the limiting lever 72 to move. Since the elastic coefficient of the first return spring 612 is greater than that of the locking spring 71, the first sleeve 51 remains relatively stationary under the action of the first return spring 612, and the locking spring 71 is compressed. The locking tongue 7 continues to move under the push of the unlocking protrusion 32 and fully extends out of the lock sleeve 4, causing the limiting lever 72 to contact the inner wall of the first sleeve 51 and continue to move. The limiting lever 72 pushes the first sleeve 51 to move and compress the first return spring 612, and the push rod 5... 24. Push the fixing member 53 away from the first sleeve 51, and then the fixing member 53 passes over the locking member 52. Under the action of the unlocking spring 532, the fixing member 53 approaches the first sleeve 51 in the x direction. The pressing surface 522 of the push rod 524 is used to lock the locking tongue 7, preventing the locking tongue 7 from extending into the lock sleeve 4. Thus, the display component 1 can be taken out and the locking rod 3 can be disengaged from the lock sleeve 4, completing the disassembly of the display component 1. The operation is simple and quick. After unlocking, since the locking rod 3 remains inserted into the lock sleeve 4, the display component 1 will not fall off after unlocking. The operation is convenient and has higher security.

[0062] When the display component 1 is removed, as the locking rod 3 is pulled out, the unlocking protrusion 32 contacts the reset protrusion 6210, which pushes the connecting rod 621, causing the connecting rod 621 and the driving block 622 to move along the y-direction. Under the action of the second pushing inclined surface 623, the driving block 622 drives the rod 531 and the fixing member 53 to move along the x-direction. The fixing member 53 moves away from the first sleeve 51 and disengages from the locking member 52. As a result, under the action of the first reset spring 612, the first sleeve 51 moves to the y-direction to reset, and the locking tongue 7 extends into the locking sleeve 4 to achieve reset, so that the display component 1 can be assembled and used next time. The reset process is automatically triggered and is simple and convenient to use.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A display screen back cover and display connection device, comprising a display component and a back cover, wherein the direction perpendicular to the plane where the display component is located is defined as the x-direction, and the direction perpendicular to the x-direction is defined as the y-direction, characterized in that, include: The display component is provided with a mounting hole, and the locking rod is slidably disposed in the mounting hole along the x-direction. The locking rod is provided with a locking groove. A locking sleeve is disposed on the back cover along the x-direction. The side wall of the locking sleeve is provided with a through hole, and a locking tongue is slidably disposed in the through hole. The locking tongue is provided with a locking spring so that the locking tongue extends into or out of the locking sleeve along the y-direction. When the display component is fastened to the back cover, the locking rod is inserted into the locking sleeve, and the locking tongue abuts against the locking groove. An unlocking limiter is configured on the back cover. When the lock tongue is fully extended from the lock sleeve, the unlocking limiter is triggered to lock the lock tongue. The lock rod is configured with an unlocking protrusion ring, which is located between the lock groove and the display panel. When the lock rod continues to be inserted into the lock sleeve along the x direction, the unlocking protrusion ring can push the lock tongue to move along the y direction to fully extend from the lock sleeve. as well as, A reset element, disposed on the back cover, is used to release the locking tongue of the unlocking limit part; The unlocking limiting part includes: The first sleeve is slidably disposed along the y-direction. The locking spring is disposed inside the first sleeve. A limit rod is disposed at the end of the latch away from the locking rod, and the locking spring is connected to the outer wall of the latch end. The limit rod is slidably disposed inside the first sleeve. When the latch is fully extended out of the lock sleeve, the limit rod contacts the inner wall of the first sleeve and drives the first sleeve to slide along the y-direction. A fixing member is slidably disposed on the outer wall of the lock sleeve along the x-direction, and a rod is connected to the other end of the fixing member, which is equipped with an unlocking spring. A locking element is disposed on the outer wall of the first sleeve. The locking element has a pushing slope on the side near the fixing element. The pushing slope is slidably engaged with the fixing element. The fixing element has a pressing surface on the side near the locking rod. When the first sleeve moves along the y direction, the pushing slope can push the fixing element to move along the x direction. The reset component includes: The locking tongue reset assembly includes a fixedly disposed second sleeve and a first reset spring disposed within the second sleeve. The first sleeve is slidably disposed within the second sleeve and is connected to the second sleeve. The elastic coefficient of the first reset spring is greater than that of the locking spring. A fixing component reset assembly includes a connecting rod that slides along the y-direction. The connecting rod is equipped with a driving block that slides in contact with the end of the rod. When the driving connecting rod slides along the y-direction, the driving block can push the rod to move the top component along the x-direction. The connecting rod is equipped with a second return spring. One end of the connecting rod is a reset trigger part, which penetrates into the lock sleeve and is located between the lock tongue and the lock sleeve port. The lock rod is equipped with a reset protrusion ring, which can push the reset trigger part to move along the y direction.

2. The back cover display connection device for the display screen according to claim 1, characterized in that, The locking element includes a connecting block, a push rod hinged to the connecting block, and an elastic element disposed between the push rod and the first sleeve. The push rod has an inclination angle α with the straight line in the y direction, the outer wall of the push rod forms a pushing slope, and the end face of the push rod away from the hinge point is a pressing surface.

3. The back cover display connection device for the display screen according to claim 1, characterized in that, An installation sleeve is embedded in the mounting hole, and a pressing spring is disposed inside the installation sleeve. The end of the locking rod is connected to the pressing spring.

4. The back cover display connection device for the display screen according to claim 2, characterized in that, The reset protrusion contacts the inner wall of the locking sleeve, and the outer wall of the reset protrusion is provided with an anti-slip layer.

5. The back cover display connection device for the display screen according to claim 1, characterized in that, The locking bar has a cone block at the end away from the display component, and the locking tongue has a push-up slope that matches the cone block.

6. The back cover display connection device for the display screen according to claim 1, characterized in that, Both the unlocking spring and the second reset spring are equipped with spring sleeves, and the spring sleeves are respectively fitted onto the outer walls of the rod and the connecting rod. The spring sleeves are fixedly installed on the back shell.

Images