A kind of arc lock and splicing screen

Abstract

The present invention relates to an arc lock and a splicing screen, wherein the arc lock comprises a first box, a second box, a lock block, a lock cover, a lock rod, a lock shaft, a handle, a spring, a gasket, a lock cap and a limit pin. The lock block is rotatably arranged on the first box, and has an embedded design, a small size and occupies less space. The lock column on the lock block is perpendicular to the splicing surface of the first box, and two lock columns with symmetrical positions jointly form an angle surface. A plurality of lock columns with different heights form a plurality of angle surfaces with different slopes. Two positioning bosses on the second box block correspond to the positions of two lock columns in the same angle surface, and different splicing angles can be obtained by selecting lock columns of different angle surfaces to cooperate with the positioning bosses. In addition, due to the different heights of the lock columns, different height differences are generated after splicing different angle surfaces. At this time, the handle can be rotated, and the handle will rise and fall along the lock shaft to adjust the travel of the lock rod, so as to ensure that the lock rod can be inserted into the card hole on the card block and locked.

Description

Technical Field

[0001] The present invention relates to the technical field of splicing screens, and in particular to an arc lock and a splicing screen. Background Art

[0002] In the prior art, large-sized curved display screens are generally spliced ​​screens, which are formed by splicing multiple display unit boxes through arc locks. The arc locks are also called angle locks. The angle locks are designed with multiple splicing surfaces with different angles, such as the most common +10°, +5°, 0°, -5°, -10°, etc. When splicing, the splicing surface required by the angle lock is rotated to the splicing position, and the adjacent display unit boxes naturally produce the corresponding splicing angles. Then, the two adjacent display unit boxes are locked by the locking rod. The specific structure can refer to China Utility Model Patent 201920593930.0 Angle lock mechanism and display device. This angle lock mechanism has a large splicing surface area and a good fixing effect, but the entire angle lock is large in size and appears bulky. The angle block of the angle lock is not convenient to adjust, and needs to be improved. Summary of the invention

[0003] The purpose of the present invention is to provide a small-sized and easily adjustable arc lock and splicing screen.

[0004] The technical solution provided by the present invention is: an arc lock, comprising a first box body, a second box body, a locking block, a locking cover, a locking rod, a locking shaft, a handle, a spring, a gasket, a locking cap and a limit pin; the first box body is provided with a mounting groove, the locking block is rotatably arranged in the mounting groove, the locking cover is used to press the locking block in the mounting groove to prevent the locking block from falling out, the middle part of the locking block is provided with a step hole, the locking rod is slidably arranged in the step hole up and down, the locking cap is fixed to the upper end of the locking rod by the limit pin, and the locking rod is driven to rotate by rotating the locking cap, the gasket is arranged below the lock cap, the spring is sleeved on the locking rod, one end abuts against the gasket, and the other end abuts against the locking block, and the spring is used to lift the locking rod; the lower end of the locking rod is provided with a cross bar, and the lower end surface of the step hole of the locking block is provided with a cross groove, and when the locking rod is lifted by the spring, the cross bar is stuck in the cross groove The lock block is provided with a card block in the middle part, and the lock cap is pressed, the cross bar is inserted into the card hole and then rotated, thereby locking the first box body and the second box body.

[0005] Among them, a positioning column is provided on the upper surface of the positioning boss, and a first positioning groove is correspondingly provided on the lower end surface of the lock column of the locking block. The positioning column is inserted into the first positioning groove to realize the positioning of the positioning boss and the lock column.

[0006] The locking block has eight locking columns, which respectively form four angle surfaces of +3°, 0°, -3°, and -6°.

[0007] Wherein, a rotation positioning block is provided on the side of the locking block, and a rotation angle limiting groove is correspondingly provided on the side of the locking cover for limiting the rotation angle range of the locking block.

[0008] Wherein, positioning glass beads are further provided at the side walls of the installation groove of the first box body, and the outer side wall of the locking block is provided with a plurality of second positioning grooves, and the positioning glass beads are embedded in different second positioning grooves, so as to position the locking block at different angles.

[0009] Among them, the cross section of the lower end of the lock shaft is D-shaped, and the cross section of the step hole in the middle of the lock block is also D-shaped, forming a transmission structure.

[0010] Wherein, a bevel scale is also provided on the side surface of the lock column on the lock block, and a notch is provided at a corresponding position of the first box body for exposing the bevel scale.

[0011] Another technical solution provided by the present invention is: a spliced ​​screen, comprising the arc lock described above.

[0012] The beneficial effects of the present invention are as follows: the locking block of the arc lock is rotatably arranged on the first box body, with an embedded design, small size, and small space occupation; the locking column on the locking block is perpendicular to the joint surface of the first box body; two locking columns with symmetrical positions jointly form an angle surface; a plurality of locking columns with different heights form a plurality of angle surfaces with different slopes; the two positioning bosses on the second box body block correspond to the positions of the two locking columns in the same angle surface; different locking columns with different angle surfaces are selected to cooperate with the positioning bosses to obtain different joint angles; firstly, when adjusting the angle surface, due to the spring The locking rod is pushed upward, the cross bar is stuck in the cross groove, the lock cap is rotated, and the lock block is driven to rotate by the lock rod to achieve the purpose of adjusting the angle surface, so the adjustment is very convenient; then the first box body and the second box body are spliced, the lock rod is inserted into the card hole on the card block, the lock cap is manually twisted, and the lock rod is driven to rotate 90 degrees to form a locked state; in addition, due to the different heights of the lock columns, different angle surfaces after splicing produce different height differences after splicing. At this time, the handle can be rotated, and the handle will rise and fall along the lock shaft to adjust the lock rod stroke to ensure that the lock rod can be inserted into the card hole on the card block and locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a stereogram of an embodiment of the arc lock of the present invention;

[0014] Figure 2 is a three-dimensional diagram of the arc lock embodiment of the present invention from another angle;

[0015] Figure 3 is a schematic diagram of the exploded structure of the arc lock embodiment of the present invention;

[0016] Figure 4 is a schematic diagram of the exploded structure of the arc lock embodiment of the present invention from another angle;

[0017] Figure 5 is a top view of an embodiment of the arc lock of the present invention;

[0018] Figure 6 yes Figure 5 AA section view;

[0019] Figure 7 yes Figure 5 Cross-sectional view in the middle BB direction;

[0020] Figure 8It is a schematic diagram of the main parts installed on the first box body in the embodiment of the arc lock of the present invention;

[0021] Fig. 9 is a schematic diagram of another angle of the main parts installed on the first box body in the embodiment of the arc lock of the present invention;

[0022] Fig.10 It is a schematic diagram of the exploded structure of the main parts installed on the first box body in the embodiment of the arc lock of the present invention;

[0023] Fig.11 is a three-dimensional diagram of the locking block of the present invention;

[0024] Fig.12 It is a three-dimensional diagram of the locking block of the present invention from another angle.

[0025] Among them, 1. first box body; 101. mounting groove; 102. positioning glass bead; 103. notch; 2. second box body; 21. clamping block; 211. positioning boss; 212. clamping hole; 213. positioning column; 3. locking block; 31. step hole; 32. cross slot; 33. locking column; 331. first positioning slot; 332. inclined plane scale; 34. rotation positioning block; 35. second positioning slot; 4. locking cover; 41. rotation angle limiting slot; 5. locking rod; 51. cross rod; 6. locking shaft; 61. external thread; 7. handle; 8. spring; 9. gasket; 10. locking cap; 11. limit 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] The splicing screen of the present invention includes a curvature lock. As an embodiment of the curvature lock of the present invention, Figures 1 to 12 As shown, it includes a first box body 1, a second box body 2, a locking block 3, a locking cover 4, a locking rod 5, a locking shaft 6, a handle 7, a spring 8, a gasket 9, a locking cap 10 and a limiting pin 11.

[0028] The first box body 1 is provided with an installation groove 101, and the lock block 3 is rotatably arranged in the installation groove 101. The lock cover 4 is used to press the lock block 3 into the installation groove 101 to prevent the lock block 3 from falling out. The middle part of the lock block 3 is provided with a step hole 31, and the lock rod 5 is slidably arranged in the step hole 31 up and down. The lock cap 10 is fixed to the upper end of the lock rod 5 by the limit pin 11, and the lock rod 5 is driven to rotate by rotating the lock cap 10. The gasket 9 is arranged below the lock cap 10, and the spring 8 is sleeved on the lock rod 5, one end of which abuts against the gasket 9 and the other end abuts against the lock block 3. The spring 8 is used to lift the lock rod 5; a cross bar 51 is provided at the lower end of the lock rod 5, and a cross groove 32 is provided on the lower end surface of the lock block step hole 31. When the lock rod 5 is lifted by the spring 8, the cross bar 51 is stuck in the cross groove 32, and the lock cap 10 is rotated to drive the lock block 3 to rotate through the lock rod 5.

[0029] The lock shaft 6 is a hollow structure, which is sleeved on the lock rod 5. The lower end is inserted into the step hole 31 and rotates with the lock block 3. The upper end of the lock shaft 6 is provided with an external thread 61, and the handle 7 is provided with an internal thread. The handle 7 is screwed on the upper end of the lock shaft 6, and the upper end of the handle 7 abuts against the gasket 9. The handle 7 is rotated and the handle 7 is lifted up and down along the lock shaft 6 to adjust the stroke of the lock rod 5. The lower end face of the lock block 3 is provided with a plurality of lock columns 33. Two symmetrical lock columns 33 together form an angle surface, and the plurality of lock columns 33 have different heights to form a plurality of angle surfaces with different inclinations.

[0030] The second box body 2 is provided with a block 21, and two positioning bosses 211 are provided on the block 21. The two positioning bosses 211 correspond to the positions of the two lock columns 33 in the same angle plane. A locking hole 212 is provided in the middle of the block 21. The lock cap 10 is pressed, the cross bar 51 is inserted into the locking hole 212 and then rotated, so as to lock the first box body 1 and the second box body 2.

[0031] The locking block 3 of the arc lock is rotatably arranged on the first box body 1. It has an embedded design, a small size and occupies little space. The locking column 33 on the locking block 3 is perpendicular to the splicing surface of the first box body 1, which is completely different from the prior art. Two symmetrical locking columns 33 together form an angle surface, and multiple locking columns 33 with different heights form multiple angle surfaces with different slopes. The two positioning bosses 211 on the block 21 of the second box body 2 correspond to the positions of the two locking columns 33 in the same angle surface. Different splicing angles can be obtained by selecting locking columns 33 with different angle surfaces to cooperate with the positioning bosses 211. First, when the angle surface needs to be adjusted, due to the action of the spring 8, the locking rod 5 is pushed up, the cross bar 51 is stuck in the cross groove 32, and the lock cap 10 is rotated to drive the locking block 3 to rotate through the locking rod 5, so as to achieve the purpose of adjusting the angle surface, so the adjustment is very convenient; then the first box body 1 and the second box body 2 are spliced, the locking rod 5 is inserted into the card hole 212 on the card block 21, and the locking cap 10 is manually twisted to drive the locking rod 5 to rotate 90 degrees to form a locked state; in addition, due to the different heights of the locking column 33, different angle surfaces after splicing will produce different height differences (step differences) after splicing. At this time, the handle 7 can be rotated, and the handle 7 will rise and fall along the lock shaft 6 to adjust the stroke of the locking rod 5 to ensure that the locking rod 5 can be inserted into the card hole 212 on the card block 21 and can be locked.

[0032] In this embodiment, a positioning column 213 is provided on the upper surface of the positioning boss 211, and a first positioning groove 331 is correspondingly provided on the lower end surface of the lock column 33 of the locking block 3. The positioning column 213 is inserted into the first positioning groove 331 to realize the positioning of the positioning boss 211 and the lock column 33, so that the first box body 1 and the second box body 2 can be accurately positioned without displacement.

[0033] In this embodiment, the number of locking posts 33 of the locking block 3 is eight, which respectively form four angle surfaces of +3°, 0°, -3°, and -6°. Of course, other angles may also be used, such as +10°, +5°, -5°, -10°, etc. The number of locking posts 33 of the locking block 3 is at least four, so that two angle surfaces can be formed.

[0034] In this embodiment, a rotation positioning block 34 is provided on the side of the locking block 3, and a rotation angle limiting groove 41 is correspondingly provided on the side of the locking cover 4 to limit the rotation angle range of the locking block 3. In normal use, the locking block 3 can only rotate 180 degrees, so that the angle surface is always in the correct direction.

[0035] In this embodiment, a positioning glass bead 102 is further provided on the side wall of the installation groove 101 of the first box body 1, and a plurality of second positioning grooves 35 are provided on the outer side wall of the locking block 3. The positioning glass bead 102 is embedded in different second positioning grooves 35, so as to position the locking block 3 at different angles. When the locking cap 10 is manually rotated, the positioning glass bead 102 slides out of one second positioning groove 35 and slides into another second positioning groove 35, there will be a click sound, which is convenient for the operator to feel.

[0036] In this embodiment, the cross section of the lower end of the lock shaft 6 is D-shaped, and the cross section of the step hole 31 in the middle of the lock block 3 is also D-shaped, forming a transmission structure, so that the lock shaft 6 can rotate with the lock block 3.

[0037] In this embodiment, the side of the lock column 33 on the lock block 3 is further provided with an inclined scale 332, and a notch 103 is provided at a corresponding position of the first box body 1 to expose the inclined scale 332, so that the operator can directly observe the splicing angle of the arc lock.

[0038] 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 radian lock, characterized in that: It includes a first box body, a second box body, a lock block, a lock cover, a lock rod, a lock shaft, a handle, a spring, a gasket, a lock cap and a limit pin; The first box body is provided with an installation groove, the lock block is rotatably arranged in the installation groove, the lock cover is used to press the lock block in the installation groove to prevent the lock block from falling out, the middle part of the lock block is provided with a step hole, the lock rod is slidably arranged in the step hole up and down, the lock cap is fixed to the upper end of the lock rod by a limit pin, and the lock rod is driven to rotate by rotating the lock cap, the gasket is arranged under the lock cap, the spring sleeve is arranged on the lock rod, one end abuts against the gasket, and the other end abuts against the lock block, and the spring is used to lift the lock rod; the lower end of the lock rod is provided with a cross bar, and the lower end surface of the step hole of the lock block is provided with a cross groove, and when the lock rod is lifted by the spring, the cross bar is stuck in the cross groove, and the lock cap is rotated to drive the lock block to rotate through the lock rod; The lock shaft is a hollow structure, which is sleeved on the lock rod, and the lower end is inserted into the step hole and rotates with the lock block. The upper end of the lock shaft is provided with an external thread, and the handle is provided with an internal thread. The handle is screwed to the upper end of the lock shaft, and the upper end of the handle abuts against the gasket. The handle is rotated and the handle is raised and lowered along the lock shaft to adjust the lock rod stroke. A plurality of lock columns are provided on the lower end surface of the lock block, and two lock columns with symmetrical positions jointly form an angle surface, and a plurality of lock columns with different heights form a plurality of angle surfaces with different inclinations. The second box body is provided with a card block, and the card block is provided with two positioning bosses, and the two positioning bosses correspond to the positions of two lock cylinders in the same angle plane. A card hole is provided in the middle of the card block, and the lock cap is pressed, and the cross bar is inserted into the card hole and then rotated, so as to lock the first box body and the second box body; A rotation positioning block is provided on the side of the locking block, and a rotation angle limiting groove is correspondingly provided on the side of the locking cover, for limiting the rotation angle range of the locking block; A positioning column is provided on the upper surface of the positioning boss, and a first positioning groove is correspondingly provided on the lower end surface of the lock column of the locking block. The positioning column is inserted into the first positioning groove to realize the positioning of the positioning boss and the lock column.

2. The arc lock according to claim 1, characterized in that: The locking block has eight locking columns, which respectively form four angle surfaces of +3°, 0°, -3°, and -6°.

3. The arc lock according to claim 1, characterized in that: Positioning beads are also provided on the side walls of the installation groove of the first box body, and a plurality of second positioning grooves are provided on the outer side wall of the locking block. The positioning beads are embedded in different second positioning grooves, so as to position the locking block at different angles.

4. The arc lock according to claim 1, characterized in that: The cross section of the lower end of the lock shaft is D-shaped, and the cross section of the step hole in the middle of the lock block is also D-shaped, forming a transmission structure.

5. The arc lock according to claim 1, characterized in that: The side surface of the lock column on the lock block is also provided with an inclined scale, and a corresponding position of the first box is provided with a notch for exposing the inclined scale.

6. A spliced ​​screen, characterized in that: Including the arc lock as described in any one of claims 1 to 5.

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