Ratchet quick lock and LED display screen with the ratchet quick lock

Abstract

The present application discloses a ratchet quick lock and an LED display screen having the ratchet quick lock. The ratchet quick lock includes a lock base, a lock plate, a lock rod, a lock head and a handle. A first axial chute, a second axial chute and a circumferential chute are formed in the side wall of the lock rod. One end of the first axial chute and one end of the second axial chute are respectively communicated with both ends of the circumferential chute, and the other ends of the first axial chute and the second axial chute face the lock head. The lock base and the lock head are sleeved on the lock rod. A fixing member is provided on the lock base, and one end of the fixing member penetrates through the side wall of the lock base and is embedded in the first axial chute or the second axial chute or the circumferential chute. When the lock plate and the lock base of the ratchet quick lock of the present application are locked, the second axial chute can limit the rotation of the lock rod, avoiding the situation that the fixing member is embedded in the first axial chute due to the rotation of the lock rod to unlock, and improving the stability of the ratchet quick lock during locking while realizing the locking of the ratchet quick lock.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a ratchet quick lock and an LED display screen having the ratchet quick lock. Background Art

[0002] With the development of LED display technologies and the increasing demand in the display application market, high-density and high-definition LED display screens have become the new favorites in the market.

[0003] Due to the intuitive and convenient display of LED display screens, they are widely used in advertising exhibitions. Existing LED display screens mostly adopt a box structure design, and according to the specification requirements, unit boxes are spliced into a large LED display screen.

[0004] For the splicing between existing LED unit boxes, most of them are equipped with built-in hoisting components. These built-in hoisting components pass through two adjacent LED unit boxes to fix and connect them. However, the locking stability of the hoisting components in the existing technology is not high.

[0005] In view of this, overcoming the deficiencies of this existing technology is an urgent problem to be solved in this technical field. Summary of the Invention

[0006] The main technical problem to be solved by this application is to provide a ratchet quick lock and an LED display screen having the ratchet quick lock. The ratchet quick lock can improve the locking stability when the ratchet quick lock is locked.

[0007] To solve the above technical problem, a technical solution adopted by this application is: to provide a ratchet quick lock, which includes a lock base, a lock plate, a lock rod, a lock head, and a handle.

[0008] The lock head and the handle are respectively arranged at both ends of the lock rod.

[0009] A first axial chute, a second axial chute, and a circumferential chute are formed on the side wall of the lock rod. One end of the first axial chute and one end of the second axial chute are respectively communicated with both ends of the circumferential chute. The other ends of the first axial chute and the second axial chute face the lock head.

[0010] The lock base and the lock head are sleeved on the lock rod.

[0011] A fixing member is arranged on the lock base. One end of the fixing member penetrates through the side wall of the lock base and is embedded in the first axial chute, or the second axial chute, or the circumferential chute.

[0012] The handle drives the lock rod to rotate, so that one end of the fixing member is embedded in the first axial chute or the second axial chute along the circumferential chute.

[0013] When the fixing member is embedded in the second axial sliding groove, the handle is close to the lock head so that the lock plate and the lock seat are locked.

[0014] When the fixing member is embedded in the first axial sliding groove, the lock head can penetrate through the lock plate, and the locking between the lock plate and the lock seat is released.

[0015] Wherein, a first through hole is provided on the lock plate, a second through hole is provided on the lock seat, and the lock rod penetrates through the first through hole and the second through hole.

[0016] Wherein, the cross-sectional shape of the lock head is the same as the cross-sectional shape of the first through hole, and the cross-sectional shape of the lock head is non-circular.

[0017] Wherein, the fixing member is a fastening rod, a thread is provided on the side wall of the fastening rod, a third through hole is provided on the side wall of the lock seat, a thread is provided on the side wall of the third through hole, and the fixing member is screwed into the third through hole by the thread to be embedded in the first axial sliding groove or the second axial sliding groove or the circumferential sliding groove.

[0018] Wherein, the handle includes a handle grip and a sleeve, the handle grip is fixed on the outer side wall of the sleeve, a thread is provided inside the sleeve, a thread is provided on the side wall of the lock rod, the sleeve and the lock rod are connected by the thread, when the fixing member is embedded in the second axial sliding groove, the sleeve rotates relative to the lock rod, thereby pushing the lock seat close to the lock plate to lock the lock plate and the lock seat.

[0019] Wherein, the handle further includes a locking wrench and an elastic member, the handle grip is hollow, the handle grip communicates with the sleeve, a ratchet gear is received in the sleeve, the ratchet gear is fixedly connected to one end of the lock rod, the elastic member connects the locking wrench and the handle grip, under the action of the elastic member, the locking wrench abuts against the ratchet gear to limit the rotation of the handle relative to the lock rod, when the locking wrench is pressed, the locking wrench releases the abutment against the ratchet gear so that the handle can rotate relative to the lock rod.

[0020] Wherein, the elastic member is a torsion spring, a support column is provided on the inner wall of the handle grip, the torsion spring and the locking wrench are sleeved on the support column in sequence; the handle further includes a bottom cover, and the bottom cover is threadedly connected to the support column.

[0021] To solve the above technical problems, another technical solution adopted by this application is: to provide an LED display screen, and the LED display screen includes the ratchet quick lock according to any one of the first aspects.

[0022] Among them, the LED display screen includes a plurality of LED unit boxes, and the lock base and the lock plate of the ratchet quick lock are respectively arranged on two adjacent LED unit boxes.

[0023] Among them, the lock base of the ratchet quick lock is integrally formed and connected with the LED unit box;

[0024] Or the lock base of the ratchet quick lock is detachably connected with the LED unit box.

[0025] The beneficial effect of this application is: Different from the prior art, this application provides a ratchet quick lock, which includes a lock base, a lock plate, a lock rod, a lock head and a handle. The side wall of the lock rod is provided with a first axial chute, a second axial chute and a circumferential chute. One end of the first axial chute and one end of the second axial chute are respectively communicated with both ends of the circumferential chute, and the other ends of the first axial chute and the second axial chute face the lock head; the lock base and the lock head are sleeved on the lock rod; a fixing member is provided on the lock base, and one end of the fixing member penetrates through the side wall of the lock base and is embedded in the first axial chute or the second axial chute or the circumferential chute; the handle drives the lock rod to rotate so that one end of the fixing member is embedded in the first axial chute or the second axial chute along the circumferential chute; when the fixing member is embedded in the second axial chute, the handle is close to the lock head so that the lock plate and the lock base are locked; when the fixing member is embedded in the first axial chute, the lock head can penetrate through the lock plate, and the locking between the lock plate and the lock base is released. The ratchet quick lock of this application can rotate the handle so that the fixing member on the lock base is embedded in the first axial chute or the second axial chute through the circumferential chute to control the opening and closing of the ratchet quick lock, and when the lock plate and the lock base are locked, the second axial chute can limit the rotation of the lock rod to avoid the situation that the fixing member is embedded in the first axial chute due to the rotation of the lock rod and the lock is opened, improving the stability of the ratchet quick lock when it is locked while realizing the locking of the ratchet quick lock. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly introduced below. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of a first perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application;

[0028] Figure 2 It is a schematic structural diagram of a second perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application;

[0029] Figure 3 It is a schematic exploded structural diagram of a first perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application;

[0030] Figure 4 It is a schematic diagram of the second explosion structure of a ratchet quick lock provided by an embodiment of the present application;

[0031] Figure 5 It is a schematic diagram of the structure of the lock rod in an embodiment of a ratchet quick lock provided by an embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of the structure of an LED display screen provided by an embodiment of the present application;

[0033] Figure 7 is Figure 6 A detailed structure diagram of area A in the LED display screen. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0036] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or demonstration". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that this application can be implemented without these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of this application with unnecessary details. Therefore, this application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in this application.

[0037] An embodiment of this application provides a ratchet quick lock, which includes a lock base, a lock plate, a lock rod, a lock head, and a handle. The side wall of the lock rod is provided with a first axial chute, a second axial chute, and a circumferential chute. One end of the first axial chute and one end of the second axial chute are respectively communicated with both ends of the circumferential chute, and the other ends of the first axial chute and the second axial chute face the lock head; the lock base and the lock head are sleeved on the lock rod; a fixing member is provided on the lock base, and one end of the fixing member penetrates through the side wall of the lock base and is embedded in the first axial chute or the second axial chute or the circumferential chute; the handle drives the lock rod to rotate so that one end of the fixing member is embedded in the first axial chute or the second axial chute along the circumferential chute; when the fixing member is embedded in the second axial chute, the handle is close to the lock head to lock the lock plate and the lock base; when the fixing member is embedded in the first axial chute, the lock head can penetrate through the lock plate, and the locking between the lock plate and the lock base is released.

[0038] The following will be described in detail respectively.

[0039] Refer to Figures 1-5 , Figure 1 which is a schematic structural diagram of a first perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application; Figure 2 which is a schematic structural diagram of a second perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application; Figure 3 which is a schematic exploded structural diagram of a first perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application; Figure 4 which is a schematic exploded structural diagram of a second perspective of an embodiment of a ratchet quick lock provided by an embodiment of this application; Figure 5 which is a schematic structural diagram of the lock rod in an embodiment of a ratchet quick lock provided by an embodiment of this application.

[0040] In the embodiment of the present application, the ratchet quick lock 10 includes a lock base 12, a lock plate 11, a lock rod 13, a lock head 15 and a handle 14. The two ends of the lock rod 13 are respectively provided with a lock head 15 and a handle 14. The side wall of the lock rod 13 is provided with a first axial chute 131, a second axial chute 133 and a circumferential chute 132. One end of the first axial chute 131 and one end of the second axial chute 133 are respectively communicated with the two ends of the circumferential chute 132. The other ends of the first axial chute 131 and the second axial chute 133 face the lock head 15. The lock base 12 and the lock head 15 are sleeved on the lock rod 13. The lock base 12 is provided with a fixing member 123. One end of the fixing member 123 penetrates through the side wall of the lock base 12 and is embedded in the first axial chute 131 or the second axial chute 133 or the circumferential chute 132. The handle 14 drives the lock rod 13 to rotate, so that one end of the fixing member 123 is embedded in the first axial chute 131 or the second axial chute 133 along the circumferential chute 132. When the fixing member 123 is embedded in the second axial chute 133, the handle 14 is close to the lock head 15, so that the lock plate 11 and the lock base 12 are locked. When the fixing member 123 is embedded in the first axial chute 131, the lock head 15 can penetrate through the lock plate 11 and the lock base 12, and the locking between the lock plate 11 and the lock base 12 is released.

[0041] In the embodiment of the present application, the lock plate 11 is provided with a first through hole 111, and the lock base 12 is provided with a second through hole 121. The lock rod 13 penetrates through the first through hole 111 and the second through hole 121. Wherein, the second through hole 121 penetrates through the lock base 12 from one side of the lock base 12 to the other side of the lock base 12. Preferably, the lock rod 13 is a cylinder, and the second through hole 121 is a circular hole. Of course, the second through hole 121 can also be other shapes such as a triangle or a polygon, as long as it is ensured that the second through hole 121 can allow the lock rod 13 to rotate.

[0042] In the embodiment of the present application, the cross-sectional shape of the lock head 15 is the same as the cross-sectional shape of the first through hole 111, and the cross-sectional shape of the lock head 15 is non-circular. For example, the cross-sectional shape of the lock head 15 is a rectangle, a square, a triangle, an ellipse, a polygon or an irregular shape, etc. The cross-sectional shape of the lock head 15 is the same as the cross-sectional shape of the first through hole 111, and both are non-circular. The lock head 15 can pass through the first through hole 111. However, when the lock head 15 rotates relative to the first through hole 111 by a preset angle, the lock head 15 can no longer pass through the first through hole 111, so that the lock plate 11 can be resisted. Of course, the cross-sectional shape of the lock head 15 and the cross-sectional shape of the first through hole 111 can also be different, and the present application does not limit this.

[0043] In the embodiment of the present application, the fixing member 123 is a fastening rod. The side wall of the fastening rod is provided with a thread. The side wall of the lock base 12 is provided with a third through hole 122. The side wall of the third through hole 122 is provided with a thread. The fixing member 123 is screwed into the third through hole 122 through the thread to be embedded in the first axial chute 131 or the circumferential chute 132 or the second axial chute 133.

[0044] In the embodiment of the present application, the handle 14 includes a grip 141 and a sleeve 142. The grip 141 is fixed to the outer side wall of the sleeve 142. The inside of the sleeve 142 is provided with threads, and the side wall of the locking rod 13 is provided with threads. The sleeve 142 is threadedly connected to the locking rod 13. When the fixing member 123 is inserted into the second axial chute 133, the sleeve 142 rotates relative to the locking rod 13, so as to approach the locking seat 12, thereby pushing the locking seat 12 close to the locking plate 11 to lock the locking plate 11 and the locking seat 12. Specifically, the grip 141 extends in a direction away from the sleeve 142, facilitating a person to rotate the sleeve 142 through the grip 141.

[0045] In the embodiment of the present application, the handle 14 further includes a locking wrench 145 and an elastic member 144. The grip 141 is hollow and communicates with the sleeve 142. A gear 143 is received in the sleeve 142. The gear 143 is fixedly connected to one end of the locking rod 13. The elastic member 144 connects the locking wrench 145 and the grip 141. Under the action of the elastic member 144, the locking wrench 145 abuts against the gear 143 to limit the rotation of the handle 14 relative to the locking rod 13. When the locking wrench 145 is pressed, the locking wrench 145 releases the abutment against the gear 143, so that the handle 14 can rotate relative to the locking rod 13.

[0046] In the embodiment of the present application, the elastic member 144 is a torsion spring. A support post 146 is provided on the inner wall of the grip 141. The torsion spring and the locking wrench 145 are sequentially sleeved on the support post 146; the handle 14 further includes a bottom cover 147, and the bottom cover 147 is threadedly connected to the support post 146.

[0047] The present application provides a ratchet quick lock. The ratchet quick lock includes a locking seat, a locking plate, a locking rod, a lock head and a handle. The two ends of the locking rod are respectively provided with a lock head and a handle. The side wall of the locking rod is provided with a first axial chute and a circumferential chute. One end of the first axial chute communicates with one end of the circumferential chute, and the other end of the first axial chute faces the lock head; the locking seat and the lock head are sleeved on the locking rod; a fixing member is provided on the locking seat. The handle drives the locking rod to move, so that one end of the fixing member penetrates through the side wall of the locking seat and is inserted into the first axial chute or the circumferential chute; when the fixing member is inserted into the circumferential chute, the axial movement of the locking rod is restricted, the lock head abuts against the side of the locking plate away from the locking seat, and the circumferential chute abuts against the fixing member on the locking seat to lock the locking plate and the locking seat; when the fixing member is inserted into the first axial chute, the restriction on the axial movement of the locking rod is released to unlock the locking plate and the locking seat. The ratchet quick lock of the present application can rotate the handle to make the fixing member on the locking seat be inserted into the first axial chute or the circumferential chute, thereby controlling the opening and closing of the ratchet quick lock. By the circumferential chute abutting against the fixing member, the locking of the ratchet quick lock is realized, and the stability of the ratchet quick lock during locking is improved.

[0048] Further, referring to Figure 6 andFigure 7 , Figure 6 is a schematic structural view of an embodiment of an LED display screen provided by an embodiment of the present application; Figure 7 is Figure 6 a detailed structural view of area A in the LED display screen in

[0049] In an embodiment of the present application, the LED display screen 20 includes a plurality of LED unit boxes, and the lock base and the lock plate of the ratchet quick lock are respectively arranged on two adjacent LED unit boxes.

[0050] In a specific embodiment, the LED display screen 20 includes two adjacent LED unit boxes, namely a first LED unit box 21 and a second LED unit box 22. The lock base 12 and the lock plate 11 of the ratchet quick lock are respectively arranged on the first LED unit box 21 and the second LED unit box 22.

[0051] It should be noted that the lock base 12 and the lock plate 11 of the ratchet quick lock can be respectively located on the side beams of the first LED unit box 21 and the second LED unit box 22 to longitudinally lock the first LED unit box 21 and the second LED unit box 22. The lock base 12 and the lock plate 11 of the ratchet quick lock can also be respectively located on the side longitudinal beams of the first LED unit box 21 and the second LED unit box 22 to horizontally lock the first LED unit box 21 and the second LED unit box 22.

[0052] In a specific embodiment, the lock base 12 of the ratchet quick lock is integrally formed and connected to the first LED unit box 21. In another specific embodiment, the lock base 12 of the ratchet quick lock and the first LED unit box 21 can be connected by detachable connection methods such as bolt connection and snap connection.

[0053] Combined with Figures 1-7 , the process of installing the ratchet quick lock 10 on the LED display screen is as follows:

[0054] Pull the handle 14 in a direction away from the lock plate 11 so that one end of the fixing member 123 reaches one end of the first axial sliding groove 131 close to the lock plate 11. At this time, the ratchet quick lock is in an open state (the state in Figure 5 ). Align the first LED unit box 21 and the second LED unit box 22 so that the lock base 12 and the lock plate 11 of the ratchet quick lock are aligned. Push the handle 14 in a direction close to the lock plate 11 so that one end of the fixing member 123 reaches the end where the first axial sliding groove 131 communicates with the circumferential sliding groove 132. Rotate the handle 14 so that one end of the fixing member 123 enters the circumferential sliding groove 132 and enters the communication part of the circumferential sliding groove 131 and the second axial sliding groove 133 through the circumferential sliding groove 131.

[0055] Further, press the locking wrench 145. The locking wrench 145 no longer abuts against the ratchet gear 143, and the handle 14 can rotate relative to the locking rod 13. Continue to rotate the handle 14. The handle 14 can rotate through the thread and approach the lock seat 12, and push the lock seat 12 closer to the lock plate 11. At this time, the fixing member 123 follows the lock seat 12 and approaches the lock plate 11 along the second axial chute 133. When the lock plate 11 abuts against the lock head 15, the lock seat 12 and the lock plate 11 are locked under the abutment on both sides of the lock head 15 and the handle 14. Release the locking wrench 145. Under the action of the elastic member 144, the locking wrench 145 abuts against the ratchet gear 143 to limit the rotation of the handle 14 relative to the locking rod 13. Thus, the lock seat 12 and the lock plate 11 are fastened. That is, the first LED unit box 21 and the second LED unit box 22 are fastened.

[0056] The beneficial effects of this application are as follows: Different from the prior art, this application provides a ratchet quick lock, which includes a lock seat, a lock plate, a locking rod, a lock head and a handle. The side wall of the locking rod is provided with a first axial chute, a second axial chute and a circumferential chute. One end of the first axial chute and one end of the second axial chute are respectively communicated with both ends of the circumferential chute, and the other ends of the first axial chute and the second axial chute face the lock head; the lock seat and the lock head are sleeved on the locking rod; a fixing member is provided on the lock seat, and one end of the fixing member penetrates through the side wall of the lock seat and is embedded in the first axial chute or the second axial chute or the circumferential chute; the handle drives the locking rod to rotate so that one end of the fixing member is embedded in the first axial chute or the second axial chute along the circumferential chute; when the fixing member is embedded in the second axial chute, the handle approaches the lock head so that the lock plate and the lock seat are locked; when the fixing member is embedded in the first axial chute, the lock head can penetrate through the lock plate, and the locking of the lock plate and the lock seat is released. The ratchet quick lock of this application can rotate the handle to make the fixing member on the lock seat be embedded in the first axial chute or the second axial chute through the circumferential chute to control the opening and closing of the ratchet quick lock. And when the lock plate and the lock seat are locked, the second axial chute can limit the rotation of the locking rod, avoiding the situation that the fixing member is embedded in the first axial chute due to the rotation of the locking rod and unlocking, and improving the stability of the ratchet quick lock when it is locked while realizing the locking of the ratchet quick lock.

[0057] The above are only the embodiments of this application, and do not limit the patent scope of this application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of this application.

Claims

1. A ratchet quick lock, characterized in that, The ratchet quick lock includes a lock base, a lock plate, a lock rod, a lock head and a handle. The lock head and the handle are respectively provided at two ends of the lock rod. The side wall of the lock rod is provided with a first axial chute, a second axial chute and a circumferential chute. One end of the first axial chute and one end of the second axial chute are respectively communicated with two ends of the circumferential chute. The other ends of the first axial chute and the second axial chute face the lock head. The lock base and the lock head are sleeved on the lock rod. A fixing member is provided on the lock base. One end of the fixing member penetrates through the side wall of the lock base and is embedded into the first axial chute, or the second axial chute, or the circumferential chute. The handle drives the lock rod to rotate so that one end of the fixing member is embedded into the first axial chute or the second axial chute along the circumferential chute. When the fixing member is embedded into the second axial chute, the handle approaches the lock head so that the lock plate and the lock base are locked. When the fixing member is embedded into the first axial chute, the lock head can penetrate through the lock plate and the locking between the lock plate and the lock base is released. The handle includes a hand grip and a sleeve. The hand grip is fixed on the outer side wall of the sleeve. The inner part of the sleeve is provided with threads. The side wall of the lock rod is provided with threads. The sleeve is threadedly connected with the lock rod. When the fixing member is embedded into the second axial chute, the sleeve rotates relative to the lock rod, thereby pushing the lock base close to the lock plate to lock the lock plate and the lock base. The handle further includes a locking wrench and an elastic member. The hand grip is hollow and communicated with the sleeve. A gear is received in the sleeve. The gear is fixedly connected to one end of the lock rod. The elastic member connects the locking wrench and the hand grip. Under the action of the elastic member, the locking wrench abuts against the gear to limit the rotation of the handle relative to the lock rod. When the locking wrench is pressed, the locking wrench releases the abutment against the gear so that the handle can rotate relative to the lock rod.

2. The ratchet quick lock according to claim 1, characterized in that, A first through hole is provided on the lock plate. A second through hole is provided on the lock base. The lock rod penetrates through the first through hole and the second through hole.

3. The ratchet quick lock according to claim 2, characterized in that, The cross-sectional shape of the lock head is the same as that of the first through hole, and the cross-sectional shape of the lock head is non-circular.

4. The ratchet quick lock according to claim 1, characterized in that, The fixing member is a fastening rod. The side wall of the fastening rod is provided with threads. The side wall of the lock base is provided with a third through hole. The side wall of the third through hole is provided with threads. The fixing member is screwed into the third through hole to be embedded into the first axial chute, or the second axial chute, or the circumferential chute.

5. The ratchet quick lock according to claim 1, characterized in that, The elastic member is a torsion spring. A support post is provided on the inner wall of the hand grip. The torsion spring and the locking wrench are sequentially sleeved on the support post. The handle further includes a bottom cover. The bottom cover is threadedly connected with the support post.

6. An LED display screen, characterized in that, The LED display screen includes the ratchet quick lock according to any one of claims 1-5.

7. The LED display screen according to claim 6, characterized in that, The LED display screen includes a plurality of LED unit boxes. The lock base and the lock plate of the ratchet quick lock are respectively arranged on two adjacent LED unit boxes.

8. The LED display screen according to claim 7, characterized in that, The lock base of the ratchet quick lock is integrally formed and connected with the LED unit box body; Or the lock base of the ratchet quick lock is detachably connected with the LED unit box body.

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