A knob type locking device and front maintenance LED splicing screen

Abstract

The present invention relates to a knob-type locker and a front-maintained LED splicing screen. The LED splicing screen includes a box, a display screen and a knob-type locker. The locker includes a base, a stator, a rotor, a reset spring, a limit pin, a knob sleeve, a cover and a screw. The locker has two unlocking methods. One is to unlock from the front, manually rotate the knob sleeve, and the knob sleeve drives the rotor to rotate to open or lock the locker; the other is to unlock from the back, push the stator upward from the bottom with a pin, the stator drives the limit pin to move upward, and the limit pin drives the rotor to rotate through an inclined groove to open or lock the locker. When the locker is applied to the LED splicing screen, it also has two disassembly and maintenance methods accordingly. One is to disassemble the display screen by the back maintenance method in the prior art, and the other is to disassemble the display screen by the front maintenance method. Since the LED splicing screen of the present application can be individually disassembled and assembled by the front maintenance method to require maintenance, it is extremely convenient to maintain.

Description

Technical Field

[0001] The invention relates to the technical field of LED splicing screens, and in particular to a knob-type locking device and a front-maintained LED splicing screen. Background Art

[0002] At present, LED splicing screens generally include a box and a display screen. The display screen is assembled on the box. In order to improve the assembly efficiency, a plurality of knob-type lockers are generally set on the back of the display screen. A plurality of locking holes are correspondingly set on the box. After the display screen is installed on the box, the locker passes through the locking hole, and then the locker is rotated. The locking block (or locking pin) on the locker rotates and presses the back of the locking hole, thereby realizing the locking of the locker, that is, locking the display screen on the box. However, in this conventional locking method, when disassembling and maintaining the display screen, the locker can only be rotated again from the back to unlock and remove the display screen from the box. This method is also called a rear maintenance structure. Since LED splicing screens are generally installed on the wall, sometimes a protective back shell is also provided on the back of the box. It is very difficult to unlock the locker from the back. It is often necessary to disassemble the display screen piece by piece from the side until the connecting screen that needs to be repaired is disassembled. Sometimes, the entire LED splicing screen must be disassembled, which is very troublesome and needs to be improved. Summary of the invention

[0003] The purpose of the present invention is to provide a knob-type locking device and a front-maintainable LED splicing screen, so that the display screen can be disassembled from the front, and the maintenance is extremely convenient.

[0004] The technical solution provided by the present invention is: a knob-type locker, comprising a base, a stator, a rotor, a reset spring, a limit pin, a knob sleeve, a cover and a screw, wherein the base is in the shape of a hollow cylinder, the upper end is closed, the lower end is open, a mounting base plate is provided at the bottom, a pair of sliding grooves which are centrally symmetrical are provided on the side surface of the base, the limit pin is fixed on the stator, the stator is slidably arranged in the base up and down, and the two ends of the limit pin are slidably arranged in the sliding groove; the rotor is also in the shape of a hollow cylinder, rotatably sleeved on the base, a locking block is provided on the side surface of the bottom of the rotor, an inclined surface is provided on the locking block, an inclined groove is correspondingly provided on the side surface of the rotor, a horizontal accommodating groove is provided on the top of the inclined groove, and the limit pin slides The knob sleeve is movably arranged in the inclined groove, and when the limit pin slides to the uppermost end of the inclined groove, it slides into the horizontal accommodating groove; the knob sleeve is arranged on the rotor, and the lower end of the knob sleeve is provided with an avoidance groove for accommodating the root of the locking block on the rotor; the cover is fixed to the top end of the base by screws, which is used to prevent the rotor and the knob sleeve from sliding axially along the base; the reset spring is arranged inside the base, and the lower end abuts against the upper end of the stator, which is used to elastically reset the stator downward; the knob sleeve is manually rotated, and the knob sleeve drives the rotor to rotate, so that the locker is opened or locked; or the stator is pushed upward from the bottom, and the stator drives the limit pin to move upward, and the limit pin drives the rotor to rotate through the inclined groove, so that the locker is opened or locked.

[0005] Wherein, the installation base plate is provided with two installation holes.

[0006] There are two locking blocks on the rotor, which are arranged in a centrally symmetrical manner.

[0007] Another technical solution provided by the present invention is: a front-maintained LED splicing screen, comprising a box, a display screen and the knob-type locking device described above, wherein the knob-type locking device is fixed to the back of the display screen through a mounting base plate, and a locking hole is correspondingly provided on the box, wherein the locking hole is circular as a whole, and a locking sheet extends inward from the side wall, and a through hole is also provided on the display screen, wherein the through hole corresponds to the stator position of the locking device; when assembling the display screen, the locking device on the display screen is aligned with the locking hole on the box, and the display screen is pushed so that the locking device passes through the locking hole, and during the pushing process, the locking hole The locking piece on the upper part contacts the inclined surface on the locking block, forcing the locking block to rotate, and the reset spring is compressed. After the locking block completely passes through the locking piece, the reset spring pushes the stator and the locking block to rotate and reset. After the locking block is reset, it abuts against the back of the locking piece, thereby realizing the locking between the box body and the display screen; when removing the display screen, the rotor is driven to rotate by rotating the knob sleeve or using a push pin to push the stator backward from the front of the display screen. The locking block on the rotor rotates and disengages from the locking piece, thereby realizing the unlocking between the box body and the display screen. At the same time, the limit pin slides into the horizontal receiving groove at the top of the inclined groove and cannot be reset.

[0008] Among them, the display screen is provided with four lockers distributed at four corners, and the box body is correspondingly provided with four locking holes.

[0009] The beneficial effects of the present invention are as follows: the knob-type lock has two unlocking methods, one is to unlock from the front, manually rotate the knob sleeve, and the knob sleeve drives the rotor to rotate, so as to open or lock the lock; the other is to unlock from the back, use a pin to push the stator upward from the bottom, the stator drives the limit pin to move upward, and the limit pin drives the rotor to rotate through the inclined slot, so as to open or lock the lock. When the knob-type lock is applied to the LED splicing screen, there are two corresponding disassembly and maintenance methods, one is to disassemble the display screen by the rear maintenance method in the prior art, and the other is to disassemble the display screen by the front maintenance method. Since a through hole is also provided on the display screen, and the through hole corresponds to the stator position of the lock, the maintenance personnel can use a pin to push the stator backward from the front of the display screen to open the lock and disassemble the display screen. At this time, the limit pin will slide into the horizontal receiving groove at the upper end of the inclined slot and cannot be reset. After the maintenance is completed, the limit pin needs to be disengaged from the horizontal receiving groove. When the display screen is installed back on the box, the locker on the display screen is aligned with the locking hole on the box, and the display screen is pushed so that the locker passes through the locking hole. During the pushing process, the locking plate on the locking hole contacts the inclined surface on the locking block, forcing the locking block to rotate, and the reset spring is compressed. After the locking block completely passes through the locking plate, the reset spring pushes the stator to move and rotates the locking block to reset. After the locking block is reset, it abuts against the back of the locking plate, thereby achieving locking between the box and the display screen. Since the LED splicing screen of this application can be individually disassembled and assembled in a front maintenance manner for the display screen that needs to be repaired, maintenance is extremely convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front perspective view of an embodiment of the front-maintained LED splicing screen of the present invention;

[0011] Figure 2 It is a rear perspective view of an embodiment of the front-maintained LED splicing screen of the present invention;

[0012] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the front-maintained LED splicing screen of the present invention;

[0013] Figure 4 It is a schematic diagram of the exploded structure of the embodiment of the front-maintained LED splicing screen of the present invention;

[0014] Figure 5 It is a schematic diagram of the locking state of the LED splicing screen embodiment of the front maintenance of the present invention;

[0015] Figure 6 This is a schematic diagram of the unlocked state of the front-maintained LED splicing screen embodiment of the present invention;

[0016] Figure 7 It is a schematic diagram of the state of the assembly process of the front-maintained LED splicing screen embodiment of the present invention;

[0017] Figure 8 is a top perspective view of an embodiment of the knob type locking device of the present invention;

[0018] Fig. 9 is a bottom perspective view of an embodiment of the knob type locking device of the present invention;

[0019] Fig.10 is a bottom view of an embodiment of the knob type locking device of the present invention;

[0020] Fig.11 yes Fig.10 Middle AA section view;

[0021] Fig.12 is a schematic diagram of the exploded structure of an embodiment of the knob type locking device of the present invention;

[0022] Fig.13 is a schematic structural diagram of the knob-type locking device embodiment of the present invention after the knob cover is removed;

[0023] Fig.14 It is a schematic diagram of the structure of the knob type locking device embodiment of the present invention after removing the knob cover and the rotor;

[0024] Fig.15 It is a schematic structural diagram of the ejector pin of the present invention.

[0025] Among them, 1. Locking device; 11. Base; 111. Mounting bottom plate; 112. Slide groove; 113. Mounting hole; 12. Stator; 13. Rotor; 131. Locking block; 132. Inclined surface; 133. Inclined groove; 134. Horizontal accommodation groove; 14. Reset spring; 15. Limit pin; 16. Knob sleeve; 161. Avoidance groove; 17. Cover; 18. Screw; 2. Box body; 21. Locking hole; 22. Locking plate; 3. Display screen; 31. Through hole; 4. Ejector pin. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] As an embodiment of the knob type locking device of the present invention, Figures 8 to 14As shown, it includes a base 11, a stator 12, a rotor 13, a reset spring 14, a limit pin 15, a knob sleeve 16, a cover 17 and a screw 18. The base 11 is hollow cylindrical, closed at the upper end and open at the lower end, and a mounting base plate 111 is provided at the bottom. A pair of sliding grooves 112 are provided on the side of the base 11 in a centrally symmetrical manner. The limit pin 15 is fixed on the stator 12, and the stator 12 is slidably arranged in the base 11 up and down. Both ends of the limit pin 15 are slidably arranged in the sliding groove 112; the rotor 13 is also hollow cylindrical and rotatably sleeved on the base 11. A locking block 131 is provided on the side of the bottom of the rotor 13, and an inclined surface 132 is provided on the locking block 131. A corresponding inclined groove 133 is also provided on the side of the rotor 13, and a horizontal accommodating groove 134 is also provided on the top of the inclined groove 133. The limit pin 15 is slidably arranged in the inclined groove 133, and when the limit pin 15 slides to the uppermost end of the inclined groove 133, it slides into the horizontal accommodating groove 134; the knob sleeve 16 is sleeved on the rotor 13, and the lower end of the knob sleeve 16 is provided with an avoidance groove 161 for accommodating the root of the locking block 131 on the rotor 13; the cover 17 is fixed to the top end of the base 11 by screws 18, which is used to prevent the rotor 13 and the knob sleeve 16 from sliding axially along the base 11, and the reset spring 14 is arranged inside the base 11, and the lower end abuts against the upper end of the stator 12, which is used to elastically reset the stator 12 downward; manually rotate the knob sleeve 16, the knob sleeve 16 drives the rotor 13 to rotate, and the lock is opened or locked; or the stator 12 is pushed upward from the bottom, the stator 12 drives the limit pin 15 to move upward, and the limit pin 15 drives the rotor 13 to rotate through the inclined groove 133, so that the lock is opened or locked.

[0028] Since the avoidance groove 161 on the knob sleeve 16 is clamped at the root of the rotor locking block 131 , when the knob sleeve 16 is manually rotated, the rotor 13 can be driven to rotate accordingly.

[0029] like Fig.14 As shown, the stator 13 and the limit pin 15 can only move up and down inside the base 11; as shown in Figure 13, due to the effect of the inclined slot 133, when the limit pin moves up and down, it can drive the rotor 13 to rotate around the base 11, but the rotor cannot move up and down.

[0030] In this embodiment, two mounting holes 113 are provided on the mounting base plate 111 for mounting the locking device on the display screen.

[0031] In this embodiment, there are two locking blocks 131 on the rotor 13, which are arranged in a centrally symmetrical manner (the number of locking blocks may be greater than 2).

[0032] As an embodiment of the LED splicing screen with front maintenance described in the present invention, Figures 1 to 14As shown, it includes a box body 2, a display screen 3 and the knob-type locker 1 described above, the knob-type locker 1 is fixed to the back of the display screen 3 through the mounting base plate 111, the box body 2 is correspondingly provided with a locking hole 21, the locking hole 21 is circular as a whole, and a locking piece 22 extends inward from the side wall, and the display screen 3 is also provided with a through hole 31, and the through hole 31 corresponds to the position of the stator 12 of the locker 1; when assembling the display screen 3, the locker 1 on the display screen 3 is aligned with the locking hole 21 on the box body 2, and the display screen 3 is pushed to make the locker 1 pass through the locking hole 21. During the pushing process, the locking piece 22 on the locking hole 21 contacts the inclined surface 132 on the locking block 131, forcing the locking block 131 to rotate (specifically as shown in FIG. Figure 7 As shown, the locking block 131 is below the locking piece 22), the reset spring 14 is compressed, and after the locking block 141 completely passes through the locking piece 22, the reset spring 14 pushes the stator 12 again, so that the locking block 131 rotates and resets, and the locking block 131 is reset and abuts against the back of the locking piece 22 (as shown in FIG. Figure 5 When removing the display screen 3, the rotor 13 is driven to rotate by rotating the knob sleeve 16 or by using the ejector pin 4 to push the stator 12 backward from the front of the display screen 3. The locking block 131 on the rotor 13 rotates and disengages from the locking sheet 22, thereby unlocking the box 2 and the display screen 3 (as shown in FIG. Figure 6 As shown), the limit pin 15 slides into the horizontal receiving groove 134 at the top of the inclined groove 133 and cannot be reset.

[0033] In this embodiment, the display screen 3 is provided with four locking devices 1 distributed at four corners, and the box body 2 is correspondingly provided with four locking holes 21 .

[0034] The knob-type locker 1 has two unlocking modes. One is to unlock from the front by manually rotating the knob sleeve 16, which drives the rotor 13 to rotate, thereby opening or locking the locker 1. The other is to unlock from the back by using the ejector pin 4 to push the stator 12 upward from the bottom, which drives the limit pin 15 to move upward, and the limit pin 15 drives the rotor 13 to rotate through the inclined slot 133, thereby opening or locking the locker 1.

[0035] When the knob-type locker 1 is applied to the LED splicing screen, there are two corresponding disassembly and maintenance methods. One is to disassemble the display screen by the rear maintenance method in the prior art, and the other is to disassemble the display screen by the front maintenance method. Since a through hole 31 is also provided on the display screen 3, the through hole 31 corresponds to the position of the stator 12 of the locker 1. The maintenance personnel can use the ejector pin 4 to push the stator 12 backward from the front of the display screen 3 to open the locker 1 and disassemble the display screen 3. At this time, the limit pin 15 will slide into the horizontal accommodating groove 134 at the upper end of the inclined groove 133 and cannot be reset. After the maintenance is completed, the limit pin 15 needs to be disengaged from the horizontal receiving groove 134. When the display screen 3 is installed back on the box body 2, the locker 1 on the display screen 3 is aligned with the locking hole 21 on the box body 2, and the display screen 3 is pushed so that the locker 1 passes through the locking hole 21. During the pushing process, the locking piece 22 on the locking hole 21 contacts the inclined surface 132 on the locking block 131, forcing the locking block 131 to rotate, and the reset spring 14 is compressed. After the locking block 131 completely passes through the locking piece 21, the reset spring 14 pushes the stator 12 downward and the locking block 131 rotates and resets. After the locking block 131 is reset, it abuts against the back of the locking piece 21, thereby achieving the locking between the box body 2 and the display screen 3. Since the LED splicing screen of the present application can be individually disassembled and assembled in a front maintenance manner for the display screen that needs to be repaired, maintenance is extremely convenient.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knob type locker, characterized in that: The invention comprises a base, a stator, a rotor, a reset spring, a limit pin, a knob sleeve, a cover and a screw. The base is in the shape of a hollow cylinder, with a closed upper end and an open lower end. A mounting base plate is provided at the bottom. A pair of sliding grooves which are centrally symmetrical are provided on the side of the base. The limit pin is fixed on the stator. The stator is slidably arranged in the base up and down. Both ends of the limit pin are slidably arranged in the sliding groove. The rotor is also in the shape of a hollow cylinder and is rotatably sleeved on the base. A locking block is provided on the side of the bottom of the rotor, and an inclined surface is provided on the locking block. An inclined groove is also provided on the side of the rotor. A horizontal accommodating groove is also provided on the top of the inclined groove. The limit pin is slidably arranged in the inclined groove. When the limit pin slides to the uppermost end of the inclined slot, it slides into the horizontal accommodating slot; the knob sleeve is arranged on the rotor, and the lower end of the knob sleeve is provided with an avoidance slot for accommodating the root of the locking block on the rotor; the cover is fixed to the top end of the base by screws, so as to prevent the rotor and the knob sleeve from sliding axially along the base; the reset spring is arranged inside the base, and the lower end abuts against the upper end of the stator, so as to elastically reset the stator downward; the knob sleeve is manually rotated, and the knob sleeve drives the rotor to rotate, so as to open or lock the locker; or the stator is pushed upward from the bottom, and the stator drives the limit pin to move upward, and the limit pin drives the rotor to rotate through the inclined slot, so as to open or lock the locker; The mounting base plate is provided with two mounting holes; There are two locking blocks on the rotor, which are arranged in a centrally symmetrical manner.

2. A front-maintained LED splicing screen, characterized in that: The invention comprises a box body, a display screen and the knob-type lock as claimed in claim 1, wherein the knob-type lock is fixed to the back of the display screen through a mounting base plate, a locking hole is correspondingly provided on the box body, the locking hole is circular as a whole, and a locking sheet extends inward from the side wall, and a through hole is also provided on the display screen, and the through hole corresponds to the stator position of the lock; when assembling the display screen, the lock on the display screen is aligned with the locking hole on the box body, and the display screen is pushed so that the lock passes through the locking hole, and during the pushing process, the locking sheet on the locking hole is aligned with the inclined portion on the locking block The locking block is forced to rotate and the reset spring is compressed. After the locking block completely passes through the locking plate, the reset spring pushes the stator and the locking block to rotate and reset. After the locking block is reset, it abuts against the back of the locking plate, thereby realizing the locking between the box body and the display screen. When removing the display screen, the rotor is driven to rotate by rotating the knob sleeve or by using a push pin to push the stator backward from the front of the display screen. The locking block on the rotor rotates and disengages from the locking plate, thereby realizing the unlocking between the box body and the display screen. At the same time, the limit pin slides into the horizontal receiving groove at the top of the inclined groove and cannot be reset.

3. The front-maintained LED splicing screen according to claim 2, characterized in that: The display screen is provided with four lockers distributed at four corners, and the box body is correspondingly provided with four locking holes.

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