A linkage corner protection mechanism

Abstract

A linkage corner protection mechanism comprises: a rotating shaft, a corner protection, a ratchet device for controlling the rotating shaft to rotate clockwise or counterclockwise, and a corner protection control device connected to the rotating shaft to control the extension or retraction of the corner protection according to the rotation direction of the rotating shaft, wherein the ratchet device has a first button and a second button that are pressed to drive the rotating shaft to rotate. The linkage corner protection mechanism of the present invention has a simple structure and only needs to be installed once. There is no need to install the corner protection every time before transporting and installing the LED display screen, and the corner protection does not need to be removed after installation, which saves labor and time. When in use, only the first button or the second button needs to be pressed to control the extension or retraction of the corner protection. The operation is simple and the use is very convenient.

Description

Technical Field

[0001] The invention relates to the technical field of transportation protection, in particular to a linkage corner protection mechanism. Background Art

[0002] Today's LED display screens are large in area and heavy in weight. They are often used in temporary display occasions and need to be frequently moved and installed. In order to protect the LED display screen from collision damage during transportation and installation, custom metal corner guards are usually installed at the four corners of the LED display screen to protect the four corners. In order not to affect the display effect, the corner guards are removed after the LED display screen is transported to the designated location and installed. The installation and removal of the corner guards are very troublesome, time-consuming and labor-intensive, and need to be improved. Summary of the invention

[0003] The purpose of the present invention is to avoid the shortcomings of the prior art and provide a linkage corner protection mechanism which is simple to operate, convenient to use and does not need to be disassembled.

[0004] A linkage corner guard mechanism comprises: a rotating shaft, a corner guard, a ratchet device for controlling the rotating shaft to rotate clockwise or counterclockwise, and a corner guard control device connected to the rotating shaft and controlling the corner guard to extend or retract according to the rotating direction of the rotating shaft, wherein the ratchet device has a first button and a second button which are driven to drive the ratchet device to control the rotation of the rotating shaft after being pressed.

[0005] Preferably, the ratchet device comprises a limiting device with a first rotating shaft, a base with a first open cavity, a first cover plate fixedly covering the first open cavity, a first gear having a first fixing hole penetrating the rotating shaft and driving the rotating shaft to rotate, a first gear brush having a first gear tooth meshing with the first gear at one end and movably fixed to the first button at the other end, a first cylinder and a second cylinder arranged on the first cover plate, a first spring and a second spring respectively sleeved on the first cylinder and the second cylinder, the base is provided with a mounting hole penetrating the rotating shaft, and the top of the base is provided with A first through hole and a second through hole, one end of the first button is arranged on the first spring and the other end extends out of the first through hole, one end of the second button is arranged on the second spring and the other end extends out of the second through hole, the first gear brush is provided with a second rotating shaft, the first opening cavity is provided with a first shaft hole for movably fixing the first fixing hole, a second shaft hole for movably fixing the first rotating shaft, and a third shaft hole for movably fixing the second rotating shaft, a limiting hook is provided on the upper part of the limiting device, and the right side of the lower part is movably fixed to the second button, and the first button is provided with a boss for the limiting hook to cooperate and snap into.

[0006] Preferably, the lower end of the first button is provided with a first blind hole which is sleeved on the first spring, the lower end of the second button is provided with a second blind hole which is sleeved on the second spring, the length of the first spring is greater than the depth of the first blind hole, and the length of the second spring is greater than the depth of the second blind hole.

[0007] Preferably, the above-mentioned first cover plate is provided with a first support seat, a second support seat, and a third support seat, and a fourth support seat, a fifth support seat, and a sixth support seat are provided in the first opening cavity of the base, the first axial hole is provided at the connection between the first support seat and the fourth support seat, the second axial hole is provided at the connection between the second support seat and the fifth support seat, and the third axial hole is provided at the connection between the third support seat and the sixth support seat.

[0008] Preferably, the first button is provided with a second fixing hole, the first gear brush is provided with a third fixing hole, the second button is provided with a fourth fixing hole, the limiting device is provided with a fifth fixing hole, the linkage corner protection mechanism is also provided with a first fixing pin which sequentially passes through the second fixing hole and the third fixing hole, and the linkage corner protection mechanism is also provided with a second fixing pin which sequentially passes through the fourth fixing hole and the fifth fixing hole.

[0009] Preferably, the number of the corner guards and the corner guard control devices are both two, and the corner guard control devices are arranged at both ends of the rotating shaft.

[0010] Preferably, the above-mentioned corner guard control device includes a third spring, a corner guard seat having a second open cavity and a third open cavity connected to each other, a second cover plate covering the second open cavity and the third open cavity, a sliding pin, a second gear brush having a sixth fixing hole for passing through and fixing the rotating shaft at one end and a second gear tooth at the other end, the sliding pin includes a sliding pin body movably arranged in the second open cavity, a rack meshing with the second gear tooth and a connecting plate connected to the corner guard, the sliding pin body is provided with a third blind hole, and the second open cavity of the corner guard seat is provided with a There is a first strip groove, the corner protector is arranged outside the corner protector seat, the connecting plate is passed through the first strip groove, the length of the third spring is greater than the depth of the third blind hole, the third spring is arranged in the third blind hole and extends out of the third blind hole, a fourth axial hole for movably fixing the sixth fixing hole is arranged at the connection between the corner protector seat and the second cover plate, a second strip groove is arranged between the second open cavity and the third open cavity, the rack is arranged in the third open cavity, and the connection between the sliding pin body and the rack is passed through the second strip groove.

[0011] Preferably, the second opening cavity is cylindrical, and the sliding pin body is cylindrical to match the second opening cavity.

[0012] Preferably, the above-mentioned corner guard is provided with a first connecting hole, the connecting plate is provided with a second connecting hole, and the linked corner guard mechanism is also provided with a third fixing pin which passes through the first connecting hole and the second connecting hole in sequence; the corner guard seat is provided with a threaded hole, the second cover plate is provided with a seventh fixing hole corresponding to the threaded hole, and the linked corner guard mechanism is also provided with a screw which passes through the seventh fixing hole and is screwed into the threaded hole.

[0013] Preferably, the corner protector is a metal corner protector.

[0014] Compared with the prior art, the present invention has the following advantages: the linkage corner protection mechanism of the present invention is installed on the LED display screen, the corner protection is installed at the four corners of the LED display screen, the ratchet device controls the rotating shaft to rotate clockwise or counterclockwise, and the corner protection control device controls the extension or retraction of the corner protection according to the clockwise or counterclockwise rotation of the rotating shaft. When the linkage corner protection mechanism of the present invention presses the first button or the second button of the ratchet device, the ratchet device is driven to control the rotating shaft to rotate clockwise or counterclockwise, and then the corner protection control device controls the extension or retraction of the corner protection. That is, when disassembling and transporting the LED display screen, the corner protection is controlled to extend to protect the four corners of the LED display screen; after the LED display screen is installed, the corner protection is controlled to retract, which will not affect the display effect of the LED display screen, and it is neat and beautiful.

[0015] Therefore, the linkage corner protection mechanism of the present invention has a simple structure and only needs to be installed once. It is not necessary to install the corner protection every time before transporting and installing the LED display screen, and the corner protection does not need to be removed after installation, which saves labor and time. When in use, only the first button or the second button needs to be pressed to control the corner protection to extend or retract. The operation is simple and the use is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described with reference to the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0017] Figure 1 It is a structural schematic diagram of a corner guard of a linkage corner guard mechanism of the present invention when the corner guard is retracted;

[0018] Figure 2 It is a structural schematic diagram of a corner guard of a linkage corner guard mechanism of the present invention when the corner guard is extended;

[0019] Figure 3 It is a schematic diagram of the exploded structure of a ratchet device of a linkage angle protection mechanism of the present invention;

[0020] Figure 4 It is a cross-sectional structural schematic diagram of a ratchet device of a linkage corner protection mechanism of the present invention;

[0021] Figure 5It is a structural schematic diagram of a ratchet device when a first button of a linkage corner protection mechanism of the present invention is pressed;

[0022] Figure 6 It is a schematic cross-sectional structure diagram of a ratchet device when a first button of a linkage corner protection mechanism of the present invention is pressed;

[0023] Figure 7 It is a structural schematic diagram of a ratchet device when the second button of a linkage corner protection mechanism of the present invention is pressed;

[0024] Figure 8 It is a schematic cross-sectional structure diagram of a ratchet device when the second button of a linkage corner protection mechanism of the present invention is pressed;

[0025] Fig. 9 It is a schematic diagram of the exploded structure of a corner protection control device of a linkage corner protection mechanism of the present invention;

[0026] Fig.10 It is a structural schematic diagram of a corner guard control device when a corner guard of a linkage corner guard mechanism of the present invention is extended;

[0027] Fig.11 It is a cross-sectional structural schematic diagram of a corner guard control device when a corner guard of a linkage corner guard mechanism of the present invention is extended;

[0028] Fig.12 It is a structural schematic diagram of a corner guard control device when the corner guard of a linkage corner guard mechanism of the present invention is retracted;

[0029] Fig.13 It is a schematic cross-sectional structural diagram of a corner guard control device when the corner guard of a linkage corner guard mechanism of the present invention is retracted. DETAILED DESCRIPTION

[0030] The present invention will be further described with reference to the following examples and accompanying drawings:

[0031] A linkage corner protection mechanism, such as Figures 1 to 13 As shown, it includes: a rotating shaft 10, a corner guard 20, a ratchet device 30 for controlling the rotating shaft 10 to rotate clockwise or counterclockwise, and a corner guard control device 60 connected to the rotating shaft 10 and controlling the corner guard 20 to extend or retract according to the rotation direction of the rotating shaft 10. The ratchet device 30 has a first button 31 and a second button 32 that are driven by pressing the ratchet device 30 to control the rotation of the rotating shaft 10.

[0032] The linkage corner protection mechanism of the present invention is installed on the LED display screen, the corner protection 20 is installed at the four corners of the LED display screen, the ratchet device 30 controls the rotating shaft 10 to rotate clockwise or counterclockwise, and the corner protection control device 60 controls the extension or retraction of the corner protection 20 according to the clockwise or counterclockwise rotation of the rotating shaft 10. When the linkage corner protection mechanism of the present invention presses the first button 31 or the second button 32 of the ratchet device 30, the ratchet device 30 is driven to control the rotating shaft 10 to rotate clockwise or counterclockwise, and the corner protection control device 60 controls the extension or retraction of the corner protection 20 according to the rotation direction of the rotating shaft 10. That is, when disassembling and transporting the LED display screen, the corner protection 20 is controlled to extend to protect the four corners of the LED display screen; after the LED display screen is installed, the corner protection 20 is controlled to retract, which will not affect the display effect of the LED display screen, and is neat and beautiful.

[0033] Therefore, the linkage corner guard mechanism of the present invention has a simple structure and only needs to be installed once. It is not necessary to install the corner guard 20 every time before transporting and installing the LED display screen. The corner guard 20 does not need to be removed after installation, which saves labor and time. When in use, only the first button 31 or the second button 32 needs to be pressed to control the corner guard 20 to extend or retract. The operation is simple and the use is very convenient.

[0034] Preferably, if Figures 1 to 8 As shown, the ratchet device 30 includes a limiting device 33 with a first rotating shaft 34, a base 38 with a first open cavity 39, a first cover plate 40 fixedly covering the first open cavity 39, a first fixing hole 46 having a fixed rotating shaft 10 and driving the rotating shaft 10 to rotate, a first gear 45 having a first gear tooth 48 meshing with the first gear 45 at one end and a first gear brush 47 movably fixed to the first button 31 at the other end, a first cylinder 41 and a second cylinder 42 arranged on the first cover plate 40, and a first spring 43 and a second spring 44 respectively sleeved on the first cylinder 41 and the second cylinder 42, the base 38 is provided with a mounting hole 51 passing through the rotating shaft 10, and the base 38 has a first gear tooth 48 meshing with the first gear 45 at one end and a first gear brush 47 movably fixed to the first button 31 at the other end, a first cylinder 41 and a second cylinder 42 arranged on the first cover plate 40, and a first spring 43 and a second spring 44 respectively sleeved on the first cylinder 41 and the second cylinder 42. A first through hole 49 and a second through hole 50 are provided at the top, one end of the first button 31 is provided on the first spring 43, and the other end extends out of the first through hole 49, one end of the second button 32 is provided on the second spring 44, and the other end extends out of the second through hole 50, the first gear brush 47 is provided with a second rotating shaft 341, and a first shaft hole 52 for movably fixing the first fixing hole 46, a second shaft hole 53 for movably fixing the first rotating shaft 34, and a third shaft hole 54 for movably fixing the second rotating shaft 341 are provided in the first opening cavity 39, a limiting hook 35 is provided on the upper part of the limiting device 33, and the right side of the lower part is movably fixed to the second button 32, and the first button 31 is provided with a boss 36 for the limiting hook 35 to cooperate and snap into.

[0035] The first gear 45 and the first gear brush 47 are both arranged in the first opening cavity 39 of the base 38. The first spring 43 and the second spring 44 are respectively sleeved on the first cylinder 41 and the second cylinder 42 on the first cover plate 40, so that the first spring 43 and the second spring 44 can be positioned so that the first spring 43 and the second spring 44 will not deviate from the position during movement. The rotating shaft 10 is passed through and fixed in the first fixing hole 46 of the first gear 45. When the first gear 45 rotates, it can drive the rotating shaft 10 to rotate; the first gear teeth 48 of the first gear brush 47 are meshed with the first gear 45, and the other end of the first gear teeth 48 is movably fixed to the first button 31. The second rotating shaft 341 of the first gear brush 47 is movably fixed to the third shaft hole 54, so that the first gear brush 47 can rotate with the second rotating shaft 341 as the axis. The first rotating shaft 34 of the limiting device 33 is movably fixed to the first shaft hole 52 , that is, the limiting device 33 can rotate around the first rotating shaft 34 . The upper part of the limiting device 33 is provided with a limiting hook 35 , and the lower part is movably fixed to the second button 32 .

[0036] Press the first button 31, such as Figure 5 and Figure 6 As shown, the first spring 43 is compressed. Since the first gear brush 47 is fixed to the first button 31, the first button 31 moves downward, driving one end of the first gear brush 47 to move downward. The first gear brush 47 rotates clockwise around the second rotating shaft 341. Since the first gear teeth 48 of the first gear brush 47 mesh with the first gear 45, the first gear 45 is driven to rotate counterclockwise, thereby driving the rotating shaft 10 to rotate counterclockwise. At this time, Figures 1 to 13 As shown, the corner guard control device 60 controls the corner guard 20 to extend, so as to protect the four corners of the LED display. Figure 6 As shown, the limiting hook 35 on the upper part of the limiting device 33 is just caught on the boss 36 of the first button 31. Due to the limiting effect of the limiting hook 35, the first button 31 will not rebound after the first button 31 is released.

[0037] Press the second button 32, such as Figure 7 and Figure 8 As shown, the second spring 44 is compressed. Since the lower part of the limiting device 33 is movably fixed to the second button 32, the second button 32 moves downward, driving the right side of the limiting device 33 to move downward. The limiting device 33 rotates clockwise with the first rotating shaft 34 as the axis. The limiting hook 35 rotates clockwise and leaves the boss 36 of the first button 31. Since the first button 31 is not limited by the limiting hook 35, the first spring 43 rebounds. Due to the rebound of the first button 31, the first button 31 moves upward, driving one end of the first gear brush 47 to move upward. The first gear brush 47 rotates counterclockwise with the second rotating shaft 341 as the axis. Since the first gear teeth 48 of the first gear brush 47 mesh with the first gear 45, the first gear 45 is driven to rotate clockwise, thereby driving the rotating shaft 10 to rotate clockwise. At this time, Figures 1 to 13 As shown, the corner guard control device 60 controls the corner guard 20 to retract, that is, the corner guard 20 does not need to be removed after installation, and does not affect the appearance.

[0038] As can be seen from the above, when the corner protector 20 needs to be extended, only the first button 31 needs to be pressed; when the corner protector 20 needs to be retracted, only the second button 32 needs to be pressed. The operation is simple and the use is very convenient.

[0039] Preferably, if Figures 3 to 8 As shown, the first button 31 is provided with a first blind hole 37 sleeved on the first spring 43 at the lower end, and the second button 32 is provided with a second blind hole 371 sleeved on the second spring 44 at the lower end. The length of the first spring 43 is greater than the depth of the first blind hole 37, and the length of the second spring 44 is greater than the depth of the second blind hole 371. The first blind hole 37 is provided at the lower end of the first button 31, and the first spring 43 is sleeved in the first blind hole 37. Since the length of the first spring 43 is greater than the depth of the first blind hole 37, and the first spring 43 extends out of the first blind hole 37, the first spring 43 can be prevented from being separated when the first button 31 moves, and the first spring 43 can be compressed and rebounded. The second blind hole 371 is provided at the lower end of the second button 32, and the second spring 44 is sleeved in the second blind hole 371. Since the length of the second spring 44 is greater than the depth of the second blind hole 371, and the second spring 44 extends out of the second blind hole 371, the second spring 44 can be prevented from being separated when the second button 32 moves, and the second spring 44 can be compressed and rebounded.

[0040] Preferably, if Figures 3 to 8 As shown, the first cover plate 40 is provided with a first support seat 55, a second support seat 56, and a third support seat 57, and the first opening cavity 39 of the base 38 is provided with a fourth support seat 58, a fifth support seat 59, and a sixth support seat 591, and the first axial hole 52 is provided at the connection between the first support seat 55 and the fourth support seat 58, the second axial hole 53 is provided at the connection between the second support seat 56 and the fifth support seat 59, and the third axial hole 54 is provided at the connection between the third support seat 57 and the sixth support seat 591. The first support seat 55 and the fourth support seat 58 are respectively provided with half holes, and the first axial hole 52 is formed by docking; the second support seat 56 and the fifth support seat 59 are respectively provided with half holes, and the second axial hole 53 is formed by docking; the third support seat 57 and the sixth support seat 591 are respectively provided with half holes, and the third axial hole 54 is formed by docking, which has a simple structure and is easy to install. Of course, the first axial hole 52, the second axial hole 53 and the third axial hole 54 can also be realized by other structures.

[0041] Preferably, if Figures 3 to 8As shown, the first button 31 is provided with a second fixing hole 311, the first gear brush 47 is provided with a third fixing hole 471, the second button 32 is provided with a fourth fixing hole 321, the limiting device 33 is provided with a fifth fixing hole 331, and the linkage angle protection mechanism is also provided with a first fixing pin 312 that sequentially penetrates the second fixing hole 311 and the third fixing hole 471, and the linkage angle protection mechanism is also provided with a second fixing pin 322 that sequentially penetrates the fourth fixing hole 321 and the fifth fixing hole 331. The first button 31 and the first gear brush 47 are movably fixed together by the first fixing pin 312 that sequentially penetrates the second fixing hole 311 and the third fixing hole 471, and the second button 32 and the limiting device 33 are movably fixed together by the second fixing pin 322 that sequentially penetrates the fourth fixing hole 321 and the fifth fixing hole 331, so that when the first button 31 and the second button 32 are pressed and rebounded, the connection between the first button 31 and the first gear brush 47 can rotate, and the connection between the second button 32 and the limiting device 33 can rotate, thereby realizing the linkage of various actions.

[0042] Preferably, if Figure 1 to Figure 2 As shown, there are two corner guards 20 and two corner guard control devices 60, and the corner guard control devices 60 are arranged at both ends of the rotating shaft 10. The rotating shaft 10 is provided with a first fixing hole 46 fixed to the ratchet device 30, and the corner guard control device 60 is arranged at both ends of the rotating shaft 10, that is, the corner guard 20 and the corner guard control device 60 can be respectively arranged at two corners of the LED display screen, and one ratchet device 30 controls the extension and contraction of two corner guards 20, and the control operation is simple and convenient. Compared with one ratchet device 30 controlling one corner guard 20, the structure is simplified, the material cost is reduced, and the space of the equipment is saved.

[0043] Preferably, if Figures 9 to 13As shown, the corner guard control device 60 includes a third spring 61, a corner guard seat 62 having a second open cavity 63 and a third open cavity 64 connected to each other, a second cover plate 65 covering the second open cavity 63 and the third open cavity 64, a sliding pin 66, and a second gear brush 67 having a sixth fixing hole 68 penetrating the fixed rotating shaft 10 at one end and a second gear tooth 69 at the other end. The sliding pin 66 includes a sliding pin body 70 movably arranged in the second open cavity 63, a rack 71 meshing with the second gear tooth 69, and a connecting plate 72 connected to the corner guard 20. The sliding pin body 70 is provided with a third blind hole 73. The third blind hole 73 of the corner guard seat 62 is provided with a sixth fixing hole 68 penetrating the fixed rotating shaft 10. A first strip groove 74 is provided at the second opening cavity 63, the corner protector 20 is provided outside the corner protector seat 62, the connecting plate 72 is provided through the first strip groove 74, the length of the third spring 61 is greater than the depth of the third blind hole 73, the third spring 61 is provided in the third blind hole 73 and extends out of the third blind hole 73, a fourth shaft hole 75 for movably fixing the sixth fixing hole 68 is provided at the connection between the corner protector seat 62 and the second cover plate 65, a second strip groove 76 is provided between the second opening cavity 63 and the third opening cavity 64, the rack 71 is provided in the third opening cavity 64, and the connection between the sliding pin body 70 and the rack 71 is provided through the second strip groove 76. One end of the third spring 61 is provided in the blind hole, and the other end is blocked in the second cover plate 65. The connection between the sliding pin body 70 and the rack 71 is provided through the second strip groove 76, and the rack 71 is provided in the third opening cavity 64.

[0044] The rotating shaft 10 is fixed in the sixth fixing hole 68 of the second gear brush 67. When the rotating shaft 10 rotates counterclockwise, the second gear brush 67 is driven to rotate counterclockwise. Since the second gear teeth 69 of the second gear brush 67 are meshed with the rack 71, the rack 71 moves toward the second cover plate 65; since the rack 71 is connected to the sliding pin body 70, the sliding pin body 70 is also moved toward the second cover plate 65 driven by the rack 71; since the third spring 61 extends out of the third blind hole 73, the third spring 61 is compressed at this time; since the corner guard 20 is connected to the sliding pin body 70 through the connecting plate 72, the corner guard 20 moves toward the second cover plate 65 driven by the sliding pin body 70, and at this time, the corner guard 20 extends out.

[0045] When the rotating shaft 10 rotates clockwise, it drives the second gear brush 67 to rotate clockwise. Since the second gear teeth 69 of the second gear brush 67 are meshed with the rack 71, the rack 71 moves away from the second cover plate 65; since the rack 71 is connected to the sliding pin body 70, the sliding pin body 70 also moves away from the second cover plate 65 driven by the rack 71; at this time, the third spring 61 rebounds; since the corner guard 20 is connected to the sliding pin body 70 through the connecting plate 72, the corner guard 20 moves away from the second cover plate 65 driven by the sliding pin body 70, and at this time, the corner guard 20 retracts.

[0046] Preferably, if Figures 9 to 13As shown, the second opening cavity 63 is cylindrical, and the sliding pin body 70 is cylindrical to match the second opening cavity 63. The second opening cavity 63 is set to be cylindrical, and the sliding pin body 70 is set to be cylindrical, so that the second opening cavity 63 and the sliding pin body 70 are in contact with each other more smoothly, and when the sliding pin body 70 moves back and forth in the second opening cavity 63, it is smoother and will not get stuck.

[0047] Preferably, if Figures 9 to 13 As shown, the corner protector 20 is provided with a first connection hole 21, the connecting plate 72 is provided with a second connection hole 77, and the linkage corner protector mechanism is also provided with a third fixing pin 22 that passes through the first connection hole 21 and the second connection hole 77 in sequence; the corner protector seat 62 is provided with a threaded hole 78, the second cover plate 65 is provided with a seventh fixing hole 79 corresponding to the threaded hole 78, and the linkage corner protector mechanism is also provided with a screw 80 that passes through the seventh fixing hole 79 and is screwed into the threaded hole 78. The corner protector 20 is fixed to the connecting plate 72 by the third fixing pin 22, and the connection structure is simple and the installation operation is convenient. The second cover plate 65 is fixed to the corner protector seat 62 by the screw 80, and the connection structure is simple, the structure is firm, and the installation operation is convenient.

[0048] Preferably, the corner protector 20 is a metal corner protector 20. The corner protector 20 is set as a metal corner protector 20, which has greater strength and hardness. After installation, it plays a better protective role on the LED display screen.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A linkage corner protection mechanism, characterized in that: include: A rotating shaft, a corner guard, a ratchet device for controlling the rotating shaft to rotate clockwise or counterclockwise, a corner guard control device connected to the rotating shaft and controlling the corner guard to extend or retract according to the rotating direction of the rotating shaft, the ratchet device having a first button and a second button that are driven to control the rotating shaft to rotate after being pressed, the ratchet device comprising a limiting device having a first rotating shaft, a base having a first open cavity, a first cover plate fixedly covering the first open cavity, a first gear having a first fixing hole through which the rotating shaft is fixed and driving the rotating shaft to rotate, a first gear brush having a first gear tooth meshing with the first gear at one end and movably fixed to the first button at the other end, a first cylinder and a second cylinder arranged on the first cover plate, a first spring and a second spring respectively sleeved on the first cylinder and the second cylinder, the base being provided with a mounting hole through which the rotating shaft is penetrated, a first through hole and a second through hole being provided at the top of the base, one end of the first button being provided on the first spring and the other end extending out of the first through hole, one end of the second button being provided on the second spring and the other end extending out of the second through hole, The first gear brush is provided with a second rotating shaft, and the first open cavity is provided with a first shaft hole for movably fixing the first fixing hole, a second shaft hole for movably fixing the first rotating shaft, and a third shaft hole for movably fixing the second rotating shaft. The upper part of the limiting device is provided with a limiting hook, and the right side of the lower part is movably fixed to the second button. The first button is provided with a boss for the limiting hook to cooperate and snap into. The lower end of the first button is provided with a first blind hole sleeved on the first spring, and the lower end of the second button is provided with a second blind hole sleeved on the second spring. The length of the first spring is greater than the depth of the first blind hole, and the length of the second spring is greater than the depth of the second blind hole. The first cover plate is provided with a first support seat, a second support seat, and a third support seat. The first open cavity of the base is provided with a fourth support seat, a fifth support seat, and a sixth support seat. The first shaft hole is provided at the connection between the first support seat and the fourth support seat, the second shaft hole is provided at the connection between the second support seat and the fifth support seat, and the third shaft hole is provided at the connection between the third support seat and the sixth support seat.

2. The linkage corner protection mechanism according to claim 1, characterized in that: The first button is provided with a second fixing hole, the first gear brush is provided with a third fixing hole, the second button is provided with a fourth fixing hole, the limiting device is provided with a fifth fixing hole, the linkage corner protection mechanism is also provided with a first fixing pin which sequentially passes through the second fixing hole and the third fixing hole, and the linkage corner protection mechanism is also provided with a second fixing pin which sequentially passes through the fourth fixing hole and the fifth fixing hole.

3. The linkage corner protection mechanism according to claim 1, characterized in that: The number of the corner guards and the number of the corner guard control devices are both two, and the corner guard control devices are arranged at both ends of the rotating shaft.

4. The linkage corner protection mechanism according to claim 1, characterized in that: The corner guard control device includes a third spring, a corner guard seat with a second open cavity and a third open cavity connected, a second cover plate covering the second open cavity and the third open cavity, a sliding pin, and a second gear brush with a sixth fixing hole for penetrating and fixing the rotating shaft at one end and a second gear tooth at the other end. The sliding pin includes a sliding pin body movably arranged in the second open cavity, a rack meshing with the second gear tooth and a connecting plate connected to the corner guard, the sliding pin body is provided with a third blind hole, and the second open cavity of the corner guard seat is provided with a sixth fixing hole for penetrating and fixing the rotating shaft. A strip groove, the corner protector is arranged outside the corner protector seat, the connecting plate is passed through the first strip groove, the length of the third spring is greater than the depth of the third blind hole, the third spring is arranged in the third blind hole and extends out of the third blind hole, a fourth axial hole for movably fixing the sixth fixing hole is arranged at the connection between the corner protector seat and the second cover plate, a second strip groove is arranged between the second open cavity and the third open cavity, the rack is arranged in the third open cavity, and the connection between the sliding pin body and the rack is passed through the second strip groove.

5. The linkage corner protection mechanism according to claim 4, characterized in that: The second opening cavity is cylindrical, and the sliding pin body is cylindrical to match the second opening cavity.

6. The linkage corner protection mechanism according to claim 5, characterized in that: The corner guard is provided with a first connecting hole, the connecting plate is provided with a second connecting hole, and the linked corner guard mechanism is also provided with a third fixing pin which passes through the first connecting hole and the second connecting hole in sequence; the corner guard seat is provided with a threaded hole, the second cover plate is provided with a seventh fixing hole corresponding to the threaded hole, and the linked corner guard mechanism is also provided with a screw which passes through the seventh fixing hole and is screwed into the threaded hole.

7. A linkage corner protection mechanism according to any one of claims 1 to 6, characterized in that: The corner protector is a metal corner protector.

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