Connecting lock and LED display screen therewith

Abstract

The present invention provides a connection lock and an LED display screen having the same, wherein the connection lock comprises: a lock seat; a first locking member, one end of which is provided with a locking portion; a locking structure, comprising a first locking portion provided on the lock seat and a second locking portion provided on the first locking member, wherein the first locking portion and / or the second locking portion are provided with a driving bevel, the driving bevel extending along the circumference of the first locking member, the driving bevel having a first end and a second end in its extending direction, the height of the driving bevel gradually increasing in the direction from the first end to the second end, and when the locking member is in a locked state, the contact portion between the first locking portion and the second locking portion can be switched from the first end of the driving bevel to the second end by rotating the first locking member; and a limiting structure, which limits the movement of the first locking member relative to the lock seat. The technical solution provided by the present application can solve the problem of poor locking effect of the connection lock in the related art.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen assembly, in particular to a connecting lock and an LED display screen having the same. Background Art

[0002] LED displays are widely used in stages, commercial performances, advertising, exhibitions, and other industries due to their excellent display effects and applicability. Conventional LED displays are composed of smaller display units. When a larger display area is required, a large number of display units are required for assembly.

[0003] In the related art, two adjacent display units are assembled using a connecting lock, a lock seat is set on one of the two adjacent display units, and a locking piece is passed through the lock seat. When the locking portion of the locking piece is locked with the other of the two adjacent display units, when the locking piece rotates relative to the lock seat, the lock seat and the locking piece are threadedly matched, so that the two adjacent display units are brought close to each other, thereby achieving the locking effect of the connecting lock on the two adjacent display units.

[0004] However, the connection locks in the related art that use threaded fitting to achieve locking have the problem of poor locking effect. Summary of the Invention

[0005] The present invention provides a connection lock and an LED display screen having the same, so as to solve the problem of poor locking effect of the connection lock in the related art.

[0006] According to one aspect of the present invention, a connecting lock is provided, which includes: a lock seat for connecting to one of two adjacent display screen units; a first locking member, which is movable along its axial direction and rotatable along its circumferential direction on the lock seat, and a locking portion is provided at one end of the first locking member, the locking portion having a locking state in which it is locked with the other of the two adjacent display screen units and an unlocking state in which it is unlocked with the other of the two adjacent display screen units; a locking structure including a first locking portion provided on the lock seat and a second locking portion provided on the first locking member, the first locking member The tightening portion and / or the second locking portion are provided with a driving inclined surface, which extends along the circumference of the first locking piece. The driving inclined surface has a first end and a second end in its extension direction. The height of the driving inclined surface gradually increases in the direction from the first end to the second end. When the locking portion is in a locked state, the first locking portion and the second locking portion abut against each other through the first end of the driving inclined surface. By rotating the first locking piece, the abutting position between the first locking portion and the second locking portion can be switched from the first end of the driving inclined surface to the second end; a limiting structure is arranged between the lock seat and the first locking piece to limit the movement of the first locking piece relative to the lock seat.

[0007] Furthermore, the first locking member includes a rotating handle and a lock shaft movably provided in the rotating handle. One end of the rotating handle is rotatably connected to the lock seat. The lock shaft cooperates with the rotating handle to prevent rotation. The locking portion is provided at one end of the lock shaft. When the locking portion is in a locked state, the locking portion protrudes from the side of the lock seat away from the rotating handle. The second locking portion is provided on the side wall of the lock shaft. The limiting structure is provided between the rotating handle and the lock seat.

[0008] Furthermore, the first locking portion includes a driving boss arranged on the end face of the lock seat facing the rotating handle, at least part of the end face of the driving boss away from the lock seat forms a driving inclined surface, and the second locking portion includes a protrusion arranged on the side wall of the lock shaft.

[0009] Furthermore, the limiting structure includes a limiting button and a plurality of limiting teeth. The limiting button is rotatably arranged at one end of the rotating handle close to the lock seat. The plurality of limiting teeth are arranged on the outer wall of the lock seat and arranged along the circumference of the lock shaft. The limiting button has a limiting position engaged with the limiting teeth and an avoidance position separated from the limiting teeth.

[0010] Furthermore, the lock seat includes a seat body and a cylinder body arranged on the seat body, the lock seat has a first through hole passing through the seat body and the cylinder body, one end of the rotating handle is sleeved on the outside of the cylinder body and is rotatably connected to the cylinder body, the lock shaft is movably passed through the first through hole, the first locking part is arranged at one end of the cylinder body away from the seat body, and the limiting structure is arranged between the rotating handle and the outer wall of the cylinder body.

[0011] Furthermore, the lock seat also includes a block, and a mounting boss is provided at the end of the cylinder away from the seat body, and the block is installed on the mounting boss. The block protrudes outward from the mounting boss radially along the lock shaft, and the first locking portion is provided on one side of the mounting boss; the rotating handle includes a sleeve and a handle provided on the outer wall of the sleeve, and the end of the sleeve facing the lock seat is sleeved on the outside of the mounting boss, and the end of the sleeve facing the lock seat is provided with an annular boss, the outer edge of the annular boss is connected to the inner wall of the sleeve, and the annular boss is clamped with the block.

[0012] Furthermore, the rotating handle includes a sleeve and an end cover arranged at the end of the sleeve away from the lock seat, the lock shaft includes a lock shaft body and a stop column arranged at the end of the lock shaft body facing the end cover, and a stop hole is provided on the end cover, and the stop column cooperates with the stop hole to prevent rotation.

[0013] Furthermore, the connecting lock also includes a first return spring, which is sleeved on the lock shaft, and two ends of the first return spring are respectively connected to the lock seat and the lock shaft.

[0014] Furthermore, the connection lock further includes a second locking member provided on the other display screen unit of the two adjacent display screen units, and the locking portion is locked or unlocked with the second locking member.

[0015] Furthermore, the second locking member includes a fixed seat and a lock tongue movably arranged on the fixed seat, the fixed seat has a second through hole, the lock tongue has a lock hole arranged corresponding to the second through hole, the lock hole includes a first hole section and a second hole section arranged along the moving direction of the lock tongue, the locking part includes a card slot arranged on the side wall of the lock shaft, the aperture of the first hole section is larger than the diameter of the lock shaft, and the aperture of the second hole section is smaller than the diameter of the lock shaft. When the locking part is in a locked state, the lock tongue is clamped in the card slot through the second hole section.

[0016] Furthermore, the lock tongue includes a connecting section and an operating section, the fixed seat has an installation cavity, the connecting section is arranged in the installation cavity and is movably connected to the fixed seat, one end of the operating section is connected to the connecting section, and the other end of the operating section extends from the installation cavity; and / or, the second locking member also includes a second return spring, and the two ends of the second return spring are respectively connected to the fixed seat and the lock tongue.

[0017] According to another aspect of the present invention, an LED display screen is provided, comprising: at least two display units; a connecting lock arranged between two adjacent display units to lock or unlock the two adjacent display units, wherein the connecting lock package is the connecting lock provided above.

[0018] According to the technical solution of the present invention, the connecting lock includes a lock seat, a first locking member, a locking structure and a limiting structure. When the locking portion is in a locked state, the first locking portion of the lock seat and the second locking portion of the first locking member abut against each other through the first end of the driving bevel. By rotating the first locking member, the abutting portion between the first locking portion and the second locking portion can be switched from the first end of the driving bevel to the second end. Since the height of the driving bevel gradually increases in the direction from the first end to the second end, after the first locking member is rotated, the driving bevel can be used to drive the locking portion of the first locking member to move toward the lock seat, thereby bringing the two adjacent display units closer together, that is, the connecting lock locks the two adjacent display units. After the two adjacent display units are locked, the limiting structure is used to limit the relative movement of the first locking member to the lock seat, thereby allowing the two adjacent display units to continue to maintain a locked state, which can improve the locking effect. By adopting the above structure, the driving inclined surface is used to drive the two adjacent display units closer together, and then the two adjacent display units are locked. This has the advantage of a reliable locking structure, and the limiting structure is used to enable the two adjacent display units to continue to maintain a locked state. With the cooperation of the locking structure and the limiting structure, the locking effect of the connecting lock can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 An exploded view of a lock base and a first locking member of a connecting lock provided by an embodiment of the present invention is shown;

[0021] Figure 2 A schematic structural diagram of a lock seat of a connection lock provided in an embodiment of the present invention is shown;

[0022] Figure 3 A right side view of a lock base of a connecting lock provided by an embodiment of the present invention is shown;

[0023] Figure 4 Shown Figure 3 Cross-sectional view at AA in the middle;

[0024] Figure 5 Shown Figure 3 Cross-sectional view at the middle BB;

[0025] Figure 6 A cross-sectional view showing the first locking portion and the second locking portion of the connecting lock provided by an embodiment of the present invention abutting against each other through the first end of the driving inclined surface;

[0026] Figure 7 A schematic structural diagram showing the first locking portion and the second locking portion of the connecting lock provided by an embodiment of the present invention abutting against each other via the first end of the driving inclined surface;

[0027] Figure 8 A cross-sectional view showing the first locking portion and the second locking portion of the connecting lock provided by an embodiment of the present invention abutting against each other through the second end of the driving inclined surface;

[0028] Figure 9 A schematic structural diagram showing a first locking portion and a second locking portion of a connecting lock provided by an embodiment of the present invention abutting against each other via the second end of the driving inclined surface;

[0029] Figure 10 A schematic structural diagram of a lock base and a first locking member is shown with the locking portion of a connecting lock provided by an embodiment of the present invention in an unlocked state;

[0030] Figure 11 A top view of the lock base and the first locking member of the connecting lock provided by an embodiment of the present invention is shown, with the locking portion of the connecting lock in an unlocked state;

[0031] Figure 12 Shown Figure 11 Cross-sectional view at CC;

[0032] Figure 13 A front view of a lock base and a first locking member of a connecting lock provided by an embodiment of the present invention with the locking portion in an unlocked state is shown;

[0033] Figure 14A schematic structural diagram of a lock base and a first locking member is shown with the locking portion of a connecting lock provided by an embodiment of the present invention in a locked state;

[0034] Figure 15 A front view of a lock base and a first locking member with the locking portion of a connecting lock provided by an embodiment of the present invention in a locked state is shown;

[0035] Figure 16 Shown Figure 15 Cross-sectional view at DD in the middle;

[0036] Figure 17 A top view of the lock base and the first locking member of the connecting lock provided by an embodiment of the present invention is shown, with the locking portion in a locked state;

[0037] Figure 18 A schematic structural diagram showing a locking portion of a connecting lock provided by an embodiment of the present invention in an unlocked state;

[0038] Figure 19 A schematic structural diagram showing a locking portion of a connecting lock provided by an embodiment of the present invention in a locked state;

[0039] Figure 20 A right side view of a second locking member of a connecting lock provided by an embodiment of the present invention is shown;

[0040] Figure 21 A cross-sectional view of a second locking member of a connecting lock provided by an embodiment of the present invention is shown;

[0041] Figure 22 A top view of a second locking member of a connecting lock provided by an embodiment of the present invention is shown;

[0042] Figure 23 A front view of a second locking member of a connecting lock provided by an embodiment of the present invention is shown;

[0043] Figure 24 A schematic structural diagram showing another perspective of a lock base of a connecting lock provided by an embodiment of the present invention is shown;

[0044] Figure 25 A structural schematic diagram showing a lock seat of a connecting lock provided by an embodiment of the present invention from another perspective;

[0045] Figure 26 Shows a left side view of a lock base of a connecting lock provided by an embodiment of the present invention;

[0046] Figure 27 A schematic structural diagram of a lock shaft of a connecting lock provided in an embodiment of the present invention is shown;

[0047] Figure 28 Shown Figure 27 Cross-sectional view at EE;

[0048] Figure 29 A schematic structural diagram showing another perspective of a lock shaft of a connecting lock provided by an embodiment of the present invention is shown;

[0049] Figure 30 A structural schematic diagram showing a lock shaft of a connecting lock provided by an embodiment of the present invention from another perspective;

[0050] Figure 31 A left side view of a lock base and a first locking member of a connecting lock provided by an embodiment of the present invention is shown;

[0051] Figure 32 A schematic diagram showing the structure of an LED display screen in a locked state provided by an embodiment of the present invention is shown;

[0052] Figure 33 A schematic diagram showing the structure of an LED display screen in an unlocked state provided by an embodiment of the present invention is shown;

[0053] Figure 34 An exploded view of an LED display screen provided by an embodiment of the present invention is shown;

[0054] Figure 35 A top view of an LED display screen provided by an embodiment of the present invention is shown;

[0055] Figure 36 Shown Figure 35 Cross-sectional view at FF;

[0056] Figure 37 It shows the front view of the LED display screen provided by the embodiment of the present invention;

[0057] Figure 38 The left side view of the LED display screen provided by the embodiment of the present invention is shown.

[0058] The above drawings include the following reference numerals:

[0059] 10. Lock seat; 11. Seat body; 12. Cylinder body; 121. Mounting boss; 13. First through hole; 14. Stopper;

[0060] 20. First locking member; 21. Locking portion; 211. Slot; 22. Rotating handle; 221. Sleeve; 2211. Annular boss; 222. Handle; 223. End cap; 2231. Anti-rotation hole; 23. Lock shaft; 231. Lock shaft body; 232. Anti-rotation post;

[0061] 30. Locking structure; 31. First locking portion; 311. Driving boss; 32. Second locking portion; 321. Protrusion; 33. Driving ramp;

[0062] 40. Limit structure; 41. Limit button; 42. Limit tooth;

[0063] 50. Anti-rotation structure;

[0064] 60. First return spring;

[0065] 70, second locking member; 71, fixing seat; 711, second through hole; 712, mounting cavity; 72, locking tongue; 721, locking hole; 7211, first hole section; 7212, second hole section; 722, connecting section; 723, operating section; 73, second return spring;

[0066] 81. Fixed plate. DETAILED DESCRIPTION

[0067] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0068] like Figures 1 to 31 As shown, an embodiment of the present invention provides a connecting lock, which includes a lock base 10, a first locking member 20, a locking structure 30 and a limiting structure 40. The lock base 10 is used to connect with one of the two adjacent display units. The first locking member 20 is movable along its axial direction and rotatable along its circumferential direction on the lock base 10. One end of the first locking member 20 is provided with a locking portion 21. The locking portion 21 has a locking state in which it is locked with the other display unit of the two adjacent display units and an unlocking state in which it is unlocked with the other display unit of the two adjacent display units. The locking structure 30 includes a first locking portion 31 provided on the lock base 10 and a second locking portion 32 provided on the first locking member 20. The first locking member 20 is movable along its axial direction and rotatable along its circumferential direction on the lock base 10. The first locking member 20 is provided with a locking portion 21. The locking portion 21 has a locking state in which it is locked with the other display unit of the two adjacent display units and an unlocking state in which it is unlocked with the other display unit of the two adjacent display units. The locking structure 30 includes a first locking portion 31 provided on the lock base 10 and a second locking portion 32 provided on the first locking member 20. The tightening portion 31 and / or the second locking portion 32 are provided with a driving inclined surface 33, which extends along the circumference of the first locking member 20. The driving inclined surface 33 has a first end and a second end in its extension direction. The height of the driving inclined surface 33 gradually increases in the direction from the first end to the second end. When the locking portion 21 is in a locked state, the first locking portion 31 and the second locking portion 32 abut against each other through the first end of the driving inclined surface 33. By rotating the first locking member 20, the abutting position between the first locking portion 31 and the second locking portion 32 can be switched from the first end of the driving inclined surface 33 to the second end. The limiting structure 40 is arranged between the lock seat 10 and the first locking member 20 to limit the movement of the first locking member 20 relative to the lock seat 10.

[0069] The connection lock provided by this embodiment includes a lock base 10, a first locking member 20, a locking structure 30, and a limiting structure 40. When the locking portion 21 is in a locked state, the first locking portion 31 of the lock base 10 and the second locking portion 32 of the first locking member 20 abut against each other through the first end of the driving bevel 33. By rotating the first locking member 20, the abutment portion between the first locking portion 31 and the second locking portion 32 can be switched from the first end of the driving bevel 33 to the second end. Since the height of the driving bevel 33 gradually increases in the direction from the first end to the second end, after rotating the first locking member 20, the driving bevel 33 can drive the locking portion 21 of the first locking member 20 to move toward the lock base 10, thereby bringing the two adjacent display units closer together, that is, the connection lock locks the two adjacent display units. After the two adjacent display units are locked, the limiting structure 40 is used to limit the movement of the first locking member 20 relative to the lock base 10, thereby allowing the two adjacent display units to continue to remain locked, thereby improving the locking effect. By adopting the above structure, the driving inclined surface 33 is used to drive the two adjacent display units closer together, and then the two adjacent display units are locked. This has the advantage of the reliability of the locking structure 30, and the limiting structure 40 is used to ensure that the two adjacent display units continue to maintain a locked state. With the cooperation of the locking structure 30 and the limiting structure 40, the locking effect of the connecting lock can be improved.

[0070] The first locking member 20 is locked and the second locking member 32 is unlocked, so the locking member 20 is unlocked. The locking portion 21 moves in the direction close to the lock seat 10; in Example 3, a driving inclined surface 33 is provided on the first locking portion 31 and the second locking portion 32, and the first locking portion 31 and the second locking portion 32 are matched through the driving inclined surface 33. When the first locking member 20 is in the locked state, the first locking member 20 is rotated to drive the first locking portion 31 and the second locking portion 32 to rotate around the axis of the first locking member 20 relative to the driving inclined surface 33, and the first locking portion 31 and the second locking portion 32 are switched from matching through the driving inclined surface 33 to the first locking portion 31 and the second locking portion 32 are only abutted through the second end of the driving inclined surface 33, and the driving inclined surface 33 drives the first locking member 20 to move toward the direction where the locking portion 21 is close to the lock seat 10.

[0071] It should be noted that the height of the driving inclined surface 33 refers to the height dimension of the driving inclined surface 33 in the axial direction of the first locking member 20 .

[0072] Among them, the first locking member 20 may include a rotating handle and a lock shaft of a split structure, the lock shaft is movably and rotatably arranged on the lock seat, and the rotating handle is rotatably arranged on the lock seat to drive the lock shaft to rotate synchronously relative to the lock seat 10. At this time, the limiting structure 40 is only used to limit the rotation of the rotating handle and the lock shaft relative to the lock seat 10. The limiting structure 40 can be a limiting tooth and a limiting button that are engaged with each other; the first locking member 20 can also include a handle and a lock shaft of an integrated structure, the handle and the lock shaft rotate or move synchronously relative to the lock seat, and at this time the limiting structure 40 is used to limit the movement and rotation of the first locking member 20 relative to the lock seat 10. The limiting structure 40 can be a pin hole arranged between the first locking member 20 and the lock seat 10 and a pin shaft structure passing through the pin hole.

[0073] like Figure 1 As shown, in this embodiment, the first locking member 20 includes a rotating handle 22 and a lock shaft 23 movably provided on the rotating handle 22. One end of the rotating handle 22 is rotatably connected to the lock seat 10. The lock shaft 23 is engaged with the rotating handle 22 to prevent rotation. The locking portion 21 is provided at one end of the lock shaft 23. When the locking portion 21 is in a locked state, the locking portion 21 protrudes from the side of the lock seat 10 away from the rotating handle 22. The second locking portion 32 is provided on the side wall of the lock shaft 23. The limiting structure 40 is provided between the rotating handle 22 and the lock seat 10. When the locking portion 21 is in the locked state, due to the anti-rotation cooperation between the rotating handle 22 and the lock shaft 23, the rotating handle 22 is rotated, so that the rotating handle 22 drives the lock shaft 23 to rotate relative to the lock base 10 through the anti-rotation structure 50 between the rotating handle 22 and the lock shaft 23, and the lock shaft 23 moves along its own axial direction relative to the lock base 10, so that the locking portion 21 is close to the lock base 10, so that the two adjacent display units are close to each other, and since the limiting structure 40 is arranged between the rotating handle 22 and the lock base 10, the limiting structure 40 limits the rotation of the rotating handle 22 relative to the lock base 10, thereby ensuring the locking effect of the two adjacent display units.

[0074] Specifically, when using the connecting lock to lock two adjacent display units, under the action of external force, the lock shaft 23 is first moved along the axis of the lock shaft 23 relative to the rotating handle 22, so that the locking portion 21 protrudes from the side of the lock seat 10 away from the rotating handle 22. When the locking portion 21 is in a locked state locked with the other display unit of the two adjacent display units, the first locking portion 31 and the second locking portion 32 abut against each other, so that the lock shaft 23 and the lock seat 10 abut against each other through the driving inclined surface, and then the locking portion 21 and the lock seat 10 respectively apply opposite forces to the two adjacent display units, thereby preliminarily locking the two adjacent display units.

[0075] like Figure 1 and Figure 2 As shown, in this embodiment, the first locking portion 31 includes a driving boss 311 provided on the end surface of the lock base 10 facing the rotating handle 22. At least a portion of the end surface of the driving boss 311 away from the lock base 10 forms a driving inclined surface 33. The second locking portion 32 includes a protrusion 321 provided on the side wall of the lock shaft 23. When the locking portion 21 is in the locked state, the protrusion 321 abuts against the driving inclined surface 33 of the driving boss 311. The lock shaft 23 is rotated to drive the protrusion 321 to rotate along the axis of the lock shaft 23, so that the protrusion 321 moves along the driving inclined surface 33. The driving inclined surface 33 drives the protrusion 321 to move in a direction away from the lock base 10, so that the lock shaft 23 moves along its own axial direction relative to the rotating handle 22, so that the locking portion 21 approaches the lock base 10, thereby locking the two adjacent display units.

[0076] like Figure 1 As shown, the limiting structure 40 includes a limiting button 41 and a plurality of limiting teeth 42. The limiting button 41 is rotatably disposed at one end of the rotary handle 22 near the lock base 10. The plurality of limiting teeth 42 are disposed on the outer side wall of the lock base 10 and arranged along the circumference of the lock shaft 23. The limiting button 41 has a limiting position in which it engages with the limiting teeth 42 and a circumferential position in which it is separated from the limiting teeth 42. When the connecting lock is used to lock or unlock two adjacent display units, the limiting button 41 is pressed to locate the limiting button 41 in the circumferential position, and the rotary handle 22 can rotate relative to the lock base 10. After the connecting lock has locked or unlocked the two adjacent display units, the limiting button 41 is pressed to locate the limiting button 41 in the limiting position. Since the plurality of limiting teeth 42 are arranged along the circumference of the lock shaft 23, the limiting teeth 42 limit the limiting button 41, so that the rotary handle 22 cannot rotate relative to the lock base 10.

[0077] like Figure 1 and Figure 2 As shown, the lock base 10 includes a base 11 and a cylinder 12 disposed on the base 11. The lock base 10 has a first through hole 13 that passes through the base 11 and the cylinder 12. One end of the rotating handle 22 is sleeved on the outside of the cylinder 12 and is rotatably connected to the cylinder 12. The lock shaft 23 is movably inserted into the first through hole 13. The first locking portion 31 is disposed at the end of the cylinder 12 away from the base 11. The limiting structure 40 is disposed between the rotating handle 22 and the outer wall of the cylinder 12. By sleeved one end of the rotating handle 22 on the outside of the cylinder 12 and the limiting structure 40 between the rotating handle 22 and the outer wall of the cylinder 12, the limiting structure 40 can limit the rotation of the rotating handle 22 on the cylinder 12.

[0078] like Figure 1 and Figure 12As shown, the lock base 10 further includes a stopper 14. A mounting boss 121 is provided at one end of the cylinder 12 away from the base 11. The stopper 14 is mounted on the mounting boss 121. The stopper 14 protrudes radially outward from the mounting boss 121 along the lock shaft 23. The first locking portion 31 is provided on one side of the mounting boss 121. The rotary handle 22 includes a sleeve 221 and a handle 222 provided on the outer wall of the sleeve 221. The end of the sleeve 221 facing the lock base 10 is sleeved on the outer side of the mounting boss 121. The end of the sleeve 221 facing the lock base 10 is provided with an annular boss 2211. The outer edge of the annular boss 2211 is connected to the inner wall of the sleeve 221, and the annular boss 2211 is engaged with the stopper 14. During the assembly process, the sleeve 221 is first sleeved on the outside of the mounting boss 121, and then the stopper 14 is installed on the mounting boss 121. Since the stopper 14 protrudes radially outward from the mounting boss 121 along the lock shaft 23, the annular boss 2211 is engaged with the stopper 14, so that after the assembly is completed, the lock base 10 and the rotating handle 22 can be rotatably sleeved on the outside of the mounting boss 121 through the engagement of the stopper 14 and the annular boss 2211, and the rotating handle 22 cannot move axially along the lock shaft 23 relative to the lock base 10.

[0079] like Figure 1 As shown, the rotating handle 22 includes a sleeve 221 and an end cap 223 provided at an end of the sleeve 221 away from the lock base 10. The lock shaft 23 includes a lock shaft body 231 and a stop post 232 provided at an end of the lock shaft body 231 facing the end cap 223. The end cap 223 is provided with a stop hole 2231, and the stop post 232 engages with the stop hole 2231 to prevent rotation. By inserting the stop post 232 into the stop hole 2231, when the rotating handle 22 is rotated, the stop hole 2231 and the stop post 232 engage to prevent rotation, so that the rotating handle 22 drives the lock shaft 23 to rotate synchronously.

[0080] like Figure 1 and Figure 12 As shown, the connecting lock further includes a first return spring 60, which is sleeved on the lock shaft 23. The two ends of the first return spring 60 are respectively connected to the lock base 10 and the lock shaft 23. Under the action of an external force, the lock shaft 23 moves relative to the rotating handle 22 in a direction closer to the lock base 10, and the first return spring 60 is compressed and deformed. When the locking portion 21 is in the locked state, the first return spring 60 remains in a compressed state. During the unlocking process of the connecting lock, when the locking portion 21 is in the unlocked state, under the action of the compression deformation force of the first return spring 60, the lock shaft 23 moves relative to the rotating handle 22 in a direction away from the lock base 10, thereby completing the unlocking of the connecting lock.

[0081] like Figure 20 and Figure 27As shown, the connecting lock further includes a second locking member 70 provided on the other of the two adjacent display units, and the locking portion 21 is locked or unlocked with the second locking member 70. Under the action of an external force, the lock shaft 23 moves relative to the rotating handle 22 toward the lock base 10, causing the locking portion 21 to lock with the second locking member 70, thereby locking the two adjacent display units.

[0082] like Figure 20 and Figure 27 As shown, the second locking member 70 includes a fixed seat 71 and a locking tongue 72 movably arranged on the fixed seat 71, the fixed seat 71 has a second through hole 711, the locking tongue 72 has a locking hole 721 arranged corresponding to the second through hole 711, the locking hole 721 includes a first hole section 7211 and a second hole section 7212 arranged along the moving direction of the locking tongue 72, the locking part 21 includes a card slot 211 arranged on the side wall of the lock shaft 23, the aperture of the first hole section 7211 is larger than the diameter of the lock shaft 23, and the aperture of the second hole section 7212 is smaller than the diameter of the lock shaft 23. When the locking part 21 is in a locked state, the locking tongue 72 is clamped in the card slot 211 through the second hole section 7212. Under the action of external force, the lock shaft 23 moves relative to the rotating handle 22 in the direction close to the lock seat 10, so that the lock tongue 72 is clamped in the slot 211 through the second hole section 7212, and the first locking member 20 is in a locked state. The first locking member 20 and the second locking member 70 lock the two adjacent display units. Press the lock tongue 72 so that the lock shaft 23 can be movably passed through the second through hole 711 and the first hole section 7211 of the lock hole 721, and the first locking member 20 and the second locking member 70 are in an unlocked state.

[0083] like Figure 21 As shown, the lock tongue 72 includes a connecting section 722 and an operating section 723. The fixed base 71 has a mounting cavity 712. The connecting section 722 is disposed within the mounting cavity 712 and is movably connected to the fixed base 71. One end of the operating section 723 is connected to the connecting section 722, and the other end of the operating section 723 extends from the mounting cavity 712. By applying force to the operating section 723, the connecting section 722 is driven to move within the mounting cavity 712, causing the lock shaft 23 to switch between the first hole section 7211 and the second hole section 7212.

[0084] like Figure 21 As shown, the second locking member 70 further includes a second return spring 73, the two ends of which are respectively connected to the fixing seat 71 and the lock tongue 72. When the lock tongue 72 is pressed, the lock shaft 23 is movably inserted into the second through hole 711 and the first hole section 7211 of the lock hole 721, and the second return spring 73 is elastically deformed. When the lock tongue 72 is released, the lock tongue 72 is reset under the elastic deformation force of the second return spring 73, so that the lock tongue 72 is locked in the locking groove 211 through the second hole section 7212.

[0085] like Figures 32 to 38 As shown, another embodiment of the present invention provides an LED display screen, which includes at least two display units and a connecting lock, wherein the connecting lock is arranged between two adjacent display units to achieve locking or unlocking of the two adjacent display units, and the connecting lock is the connecting lock provided above. Therefore, when the LED display screen provided by this embodiment is used, a second locking member 70 is provided on one of the two adjacent display units, and a lock seat 10 is provided on the other of the two adjacent display units. Since the locking portion 21 of the first locking member 20 has a locking state in which it is locked with the second locking member 70 and an unlocking state in which it is unlocked with the second locking member 70, the driving inclined surface 33 can be used to drive the connecting lock to lock the two adjacent display units. During the locking process, the locking force is provided by the abutment between the first locking portion 31 and the second locking portion 32, and the structural reliability of the first locking portion 31 and the second locking portion 32 is used to ensure the locking effect of the connecting lock.

[0086] like Figures 32 to 38 As shown, the display unit includes a fixing plate 81, the second locking member 70 is arranged on a side of the fixing plate 81 of one of the two adjacent display units away from the lock seat 10 corresponding to the second locking member 70, and the lock seat 10 is arranged on a side of the fixing plate 81 of the other of the two adjacent display units away from the second locking member 70 corresponding to the lock seat.

[0087] Applying the technical solution provided in this embodiment has the following beneficial effects:

[0088] (1) The driving inclined surface 33 is used to drive the connecting lock to lock two adjacent display units. During the locking process, the first locking portion 31 and the second locking portion 32 are in contact with each other to provide a locking force. The structural reliability of the first locking portion 31 and the second locking portion 32 is utilized to ensure the locking effect of the connecting lock.

[0089] (2) When the connecting lock is used to lock or unlock two adjacent display units, the limit button 41 is pressed to locate the limit button 41 in the avoidance position, and the rotary handle 22 can rotate relative to the lock base 10. After the connecting lock is locked or unlocked, the limit button 41 is pressed to locate the limit button 41 in the limit position. Since the plurality of limit teeth 42 are arranged along the circumference of the lock shaft 23, the limit teeth 42 limit the limit button 41, so that the rotary handle 22 cannot rotate relative to the lock base 10.

[0090] (3) Under the action of external force, the lock shaft 23 moves relative to the rotating handle 22 toward the lock base 10, so that the lock tongue 72 is clamped in the clamping slot 211 through the second hole section 7212, and the first locking member 20 is in a locked state. The first locking member 20 and the second locking member 70 lock the two adjacent display units. The lock tongue 72 is pressed, so that the lock shaft 23 can be movably passed through the second through hole 711 and the first hole section 7211 of the lock hole 721, and the first locking member 20 and the second locking member 70 are in an unlocked state.

[0091] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A connecting lock, characterized in that: The connection lock comprises: A lock seat (10) is used to connect to one of the two adjacent display units; a first locking member (20) being movable along its axial direction and rotatable along its circumferential direction on the lock seat (10), wherein one end of the first locking member (20) is provided with a locking portion (21), wherein the locking portion (21) has a locked state in which the first locking member is locked with the other of the two adjacent display units and an unlocked state in which the first locking member is unlocked with the other of the two adjacent display units; The locking structure (30) comprises a first locking portion (31) provided on the lock seat (10) and a second locking portion (32) provided on the first locking member (20), wherein the first locking portion (31) and / or the second locking portion (32) are provided with a driving inclined surface (33), wherein the driving inclined surface (33) extends along the circumference of the first locking member (20), and the driving inclined surface (33) has a first end and a second end in its extending direction, and the height of the driving inclined surface (33) gradually increases in the direction from the first end to the second end, and when the locking portion (21) is in the locked state, the first locking portion (31) and the second locking portion (32) abut against each other through the first end of the driving inclined surface (33), and by rotating the first locking member (20), the abutting position of the first locking portion (31) and the second locking portion (32) can be switched from the first end of the driving inclined surface (33) to the second end; a limiting structure (40) disposed between the lock seat (10) and the first locking member (20) to limit movement of the first locking member (20) relative to the lock seat (10); Wherein, the first locking member (20) includes a rotating handle (22) and a lock shaft (23) movably provided on the rotating handle (22); one end of the rotating handle (22) is rotatably connected to the lock seat (10); the lock shaft (23) and the rotating handle (22) are locked in engagement; the locking portion (21) is provided at one end of the lock shaft (23); when the locking portion (21) is in the locked state, the locking portion (21) protrudes from a side of the lock seat (10) away from the rotating handle (22); the second locking portion (32) is provided on a side wall of the lock shaft (23); and the limiting structure (40) is provided between the rotating handle (22) and the lock seat (10).

2. The connecting lock according to claim 1, characterized in that: The first locking portion (31) includes a driving boss (311) arranged on the end face of the lock seat (10) facing the rotating handle (22), at least a portion of the end face of the driving boss (311) away from the lock seat (10) forms the driving inclined surface (33), and the second locking portion (32) includes a protrusion (321) arranged on the side wall of the lock shaft (23).

3. The connecting lock according to claim 1, characterized in that: The limiting structure (40) includes a limiting button (41) and a plurality of limiting teeth (42), wherein the limiting button (41) is rotatably arranged at one end of the rotating handle (22) close to the lock seat (10), and the plurality of limiting teeth (42) are arranged on the outer side wall of the lock seat (10) and arranged along the circumference of the lock shaft (23), and the limiting button (41) has a limiting position engaged with the limiting teeth (42) and an avoidance position separated from the limiting teeth (42).

4. The connecting lock according to claim 1, characterized in that: The lock seat (10) includes a seat body (11) and a cylinder body (12) arranged on the seat body (11); the lock seat (10) has a first through hole (13) passing through the seat body (11) and the cylinder body (12); one end of the rotating handle (22) is sleeved on the outside of the cylinder body (12) and is rotatably connected to the cylinder body (12); the lock shaft (23) is movably passed through the first through hole (13); the first locking portion (31) is arranged at an end of the cylinder body (12) away from the seat body (11); and the limiting structure (40) is arranged between the rotating handle (22) and the outer wall of the cylinder body (12).

5. The connecting lock according to claim 4, characterized in that: The lock seat (10) further comprises a stopper (14); an end of the cylinder (12) away from the seat body (11) is provided with a mounting boss (121); the stopper (14) is mounted on the mounting boss (121); the stopper (14) protrudes outwardly from the mounting boss (121) in the radial direction of the lock shaft (23); and the first locking portion (31) is provided on one side of the mounting boss (121); The rotating handle (22) includes a sleeve (221) and a handle (222) arranged on the outer side wall of the sleeve (221), one end of the sleeve (221) facing the lock seat (10) is sleeved on the outer side of the mounting boss (121), and one end of the sleeve (221) facing the lock seat (10) is provided with an annular boss (2211), the outer edge of the annular boss (2211) is connected to the inner side wall of the sleeve (221), and the annular boss (2211) is engaged with the stopper (14).

6. The connecting lock according to claim 1, characterized in that: The rotating handle (22) includes a sleeve (221) and an end cover (223) arranged at one end of the sleeve (221) away from the lock seat (10); the lock shaft (23) includes a lock shaft body (231) and a stop column (232) arranged at one end of the lock shaft body (231) facing the end cover (223); a stop hole (2231) is provided on the end cover (223); and the stop column (232) is engaged with the stop hole (2231) to prevent rotation.

7. The connecting lock according to claim 1, characterized in that: The connecting lock further comprises a first return spring (60), which is sleeved on the lock shaft (23), and the two ends of the first return spring (60) are respectively connected to the lock seat (10) and the lock shaft (23).

8. The connecting lock according to any one of claims 1 to 7, characterized in that: The connection lock further comprises a second locking member (70) arranged on the other of the two adjacent display units, and the locking portion (21) is locked or unlocked with the second locking member (70).

9. The connecting lock according to claim 8, characterized in that: The second locking member (70) includes a fixing seat (71) and a locking tongue (72) movably arranged on the fixing seat (71), the fixing seat (71) has a second through hole (711), the locking tongue (72) has a locking hole (721) arranged corresponding to the second through hole (711), the locking hole (721) includes a first hole section (7211) and a second hole section (7212) arranged along the moving direction of the locking tongue (72), the locking portion (21) includes a clamping groove (211) arranged on the side wall of the lock shaft (23), the aperture of the first hole section (7211) is larger than the diameter of the lock shaft (23), and the aperture of the second hole section (7212) is smaller than the diameter of the lock shaft (23), and when the locking portion (21) is in the locked state, the locking tongue (72) is clamped in the clamping groove (211) through the second hole section (7212).

10. The connecting lock according to claim 9, characterized in that: The locking tongue (72) comprises a connecting section (722) and an operating section (723); the fixing seat (71) has a mounting cavity (712); the connecting section (722) is disposed in the mounting cavity (712) and is movably connected to the fixing seat (71); one end of the operating section (723) is connected to the connecting section (722); and the other end of the operating section (723) extends out of the mounting cavity (712); and / or, The second locking member (70) further includes a second return spring (73), and two ends of the second return spring (73) are respectively connected to the fixing seat (71) and the locking tongue (72).

11. An LED display screen, characterized in that: The LED display screen includes: at least two display units; A connecting lock is provided between two adjacent display units to achieve locking or unlocking of the two adjacent display units. The connecting lock is the connecting lock according to any one of claims 1 to 10.

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