Lock and LED display device having the same

Abstract

The application provides a lock and an LED display device with the lock, wherein the lock is arranged at an assembly through hole, and the lock comprises: a mounting seat, the mounting seat is provided with a mounting hole, a side wall of the mounting hole is provided with an annular guide sliding groove, the annular guide sliding groove comprises a first limiting position, a second limiting position and a first curved switching section and a second curved switching section; a lock block is arranged outside the mounting seat and is provided with a locking position and an unlocking position; a lock cylinder is movably and rotatably arranged in the mounting hole, a first end of the lock cylinder is connected with the lock block, a guide part is arranged on the lock cylinder, the guide part is slidably inserted into the annular guide sliding groove and drives the lock block to switch between the unlocking position and the locking position; a reset member is arranged in the mounting hole, and the reset member can keep the guide part in the first limiting position or the second limiting position. The technical scheme of the application can effectively solve the problem that the driving end of the tool is easy to break in related technologies, thereby affecting the maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more specifically, to a lock and an LED display device having the lock. Background Technology

[0002] In related technologies, LED display devices generally include an LED cabinet and LED modules that are detachably connected to the front of the LED cabinet via a lock.

[0003] The aforementioned lock generally includes a lock block, which has a locking position that intersects with the mounting through hole on the LED housing and an unlocking position that corresponds to the mounting through hole. When the LED module needs to be removed from the LED housing, the lock needs to be rotated to switch the lock block from the locking position to the unlocking position.

[0004] For small-pitch LED display devices that can only be maintained from the front, only tools with a small diameter at the drive end can be used to drive the lock to rotate. The drive end of the tool is easily broken due to the torsional force, which affects the maintenance efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide a lock and an LED display device with the lock, so as to solve the problem that the drive end of the tool in the related art is easy to break, which affects the maintenance efficiency.

[0006] To achieve the above objectives, according to one aspect of the present invention, a lock for an LED display device is provided. The lock is disposed at a mounting through hole and includes: a mounting base having a mounting hole, an annular guide groove being provided on the side wall of the mounting hole, the annular guide groove including a first limiting position, a second limiting position, and a first bending switching section and a second bending switching section connecting the first limiting position and the second limiting position; a lock block disposed outside the mounting base and having a locking position intersecting the mounting through hole and an unlocking position corresponding to the mounting through hole; and a lock cylinder movably and rotatably disposed within the mounting hole, a first end of the lock cylinder being connected to the lock block, and a guide portion being provided on the lock cylinder, the guide portion being slidably inserted into the annular guide groove and carrying... The moving block switches between the unlocked and locked positions. When the guide is in the first limit position, the block is in the locked position; when the guide is in the second limit position, the block is in the unlocked position. A reset member is disposed in the mounting hole. The two ends of the reset member abut against the mounting base and the lock cylinder, respectively, to apply a reset force to the lock cylinder in a direction away from the block, so that the guide is held in the first limit position or the second limit position. When a force opposite to the reset force is applied to the block or the lock cylinder, the guide enters the first bending switching section and moves to the second limit position under the action of the reset force, or the guide enters the second bending switching section and moves to the first limit position under the action of the reset force, so that the block switches between the unlocked and locked positions.

[0007] Furthermore, the first bending switching section is provided protruding toward the locking block, and the first bending switching section includes a first inclined section and a second inclined section that are interconnected.

[0008] Furthermore, the second bending switching section protrudes toward the locking block, and the second bending switching section includes a third inclined section and a fourth inclined section that are interconnected, with the third inclined section being adjacent to the second inclined section.

[0009] Furthermore, the annular guide groove also includes a first straight groove section extending along the axial direction of the mounting base. The first straight groove section is located between the fourth inclined section and the first inclined section and is connected to both the fourth inclined section and the first inclined section. The first straight groove section extends away from the locking block relative to the fourth inclined section and the first inclined section. The first limiting position is located within the first straight groove section.

[0010] Furthermore, the inflection point between the fourth inclined segment and the first inclined segment is closer to the fourth inclined segment relative to the axis of the first straight groove segment.

[0011] Furthermore, the annular guide groove also includes a second straight groove section extending along the axial direction of the mounting base. The second straight groove section is located between the first inclined section and the second inclined section and is connected to both the first and second inclined sections. The second straight groove section extends toward the locking block relative to the first and second inclined sections. The inflection point between the first and second inclined sections is closer to the first inclined section relative to the axis of the second straight groove section.

[0012] Furthermore, the central angle corresponding to the first bending switching segment and / or the central angle corresponding to the second bending switching segment is 90°.

[0013] Furthermore, the mounting base includes a first mounting body and a second mounting body nested and fitted with the first mounting body. The first mounting body includes a first mounting sleeve, and the second mounting body is a second mounting sleeve. The first mounting sleeve is fitted inside the second mounting sleeve. The inner holes of the first and second mounting sleeves form a mounting hole. The end of the first mounting sleeve is provided with a first toothed portion, and the inner sidewall of the second mounting sleeve is provided with a second toothed portion. The gap between the first and second toothed portions forms an annular guide groove.

[0014] Furthermore, the first base body also includes a connecting plate, which is located at the end of the first mounting sleeve away from the second base body. The connecting plate is provided with a first through hole, through which the first end of the lock cylinder passes.

[0015] Furthermore, the second seat portion has a second through hole at the end away from the first seat portion, through which the second end of the lock cylinder and / or an external tool can pass. A drive hole is provided on the end wall of the second end of the lock cylinder.

[0016] Furthermore, the lock cylinder includes a rod body and a cap body located at one end of the rod body away from the lock block. A reset member is sleeved on the rod body and its two ends abut against the connecting plate and the cap body respectively. The lock cylinder also includes a pin passing through the cap body, with the end of the pin protruding from the side wall of the cap body to form a guide portion.

[0017] According to another aspect of the present invention, an LED display device is provided, including a lock, wherein the lock is the lock described above.

[0018] Using the technical solution of this invention, a lock is installed between an LED housing and an LED module, and is positioned at the mounting through-hole of the LED housing. The lock includes a locking block. When the locking block intersects with the mounting through-hole, it locks the LED module onto the LED housing. When the locking block aligns with the mounting through-hole, it unlocks the LED module and the LED housing, allowing the LED module to be removed from the LED housing. The lock also includes a mounting base, a lock cylinder, and a reset component. The mounting base is provided with an annular guide groove. A guide portion on the lock cylinder can slide within the annular guide groove to switch the locking block between a locked position and an unlocked position. The annular guide groove includes a first curved switching section and a second curved switching section. When it is necessary to switch the position of the locking block, it is only necessary to push the lock cylinder to move along the axis of the mounting base within the mounting base. The guide portion slides along the first or second curved switching section, causing the lock cylinder to rotate relative to the mounting base during its movement relative to the axis of the mounting base. This causes the locking block to rotate with the lock cylinder to switch positions. During operation, the operator does not need to directly rotate the lock cylinder or lock block; they only need to push the lock cylinder or lock block along the axial direction of the mounting base. This means the drive end of the corresponding tool does not bear torsional force, and even with a small radial dimension, it is not prone to breakage. Therefore, the technical solution of this application effectively solves the problem of easy breakage of the drive end of tools in related technologies, which affects maintenance efficiency. Attached Figure Description

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

[0020] Figure 1 A perspective view of an embodiment of a lock according to the present invention is shown;

[0021] Figure 2 It shows Figure 1 A schematic diagram of the exploded structure of the lock;

[0022] Figure 3 It shows Figure 1 A cross-sectional view of the lock;

[0023] Figure 4 It shows Figure 1 An unfolded diagram of the annular guide groove of the lock;

[0024] Figure 5 It shows Figure 1 A three-dimensional structural diagram of the second seat of the lock;

[0025] Figure 6 It shows Figure 5 A three-dimensional structural diagram of the second body from another angle;

[0026] Figure 7 It shows Figure 1 A three-dimensional structural diagram of the first seat of the lock;

[0027] Figure 8 It shows Figure 7 A three-dimensional structural diagram of the first body from another angle;

[0028] Figure 9 It shows Figure 1 A three-dimensional structural diagram of the lock cylinder of the lock;

[0029] Figure 10 It shows Figure 1 A three-dimensional structural diagram of the locking block of the lock;

[0030] Figure 11 This demonstrates the use of external tools to drive. Figure 1 A schematic diagram of the lock;

[0031] Figure 12 A perspective view of an embodiment of the LED display device according to the present invention is shown;

[0032] Figure 13 It shows Figure 12 An enlarged view of point A on the LED display device;

[0033] Figure 14 It shows Figure 12 An exploded view of the LED display device;

[0034] Figure 15 It shows Figure 14 An enlarged view of point B on the LED display device;

[0035] Figure 16 It shows Figure 12 A cross-sectional schematic diagram of a portion of the structure of an LED display device; and

[0036] Figure 17 It shows Figure 12 A three-dimensional structural diagram of the LED module of an LED display device.

[0037] The above figures include the following reference numerals:

[0038] 10. LED housing; 11. Assembly through hole; 20. Mounting base; 21. Mounting hole; 22. Annular guide groove; 221. First curved switching section; 2211. First inclined section; 2212. Second inclined section; 222. Second curved switching section; 2221. Third inclined section; 2222. Fourth inclined section; 223. First straight groove section; 224. Second straight groove section; 225. Third straight groove section; 226. Fourth straight groove section; 23. First base part; 231. First mounting sleeve; 2311. First toothed part; 232. Connecting plate; 2321 233. First through hole; 234. First mating protrusion; 235. Third mating protrusion; 24. Second seat body; 241. Second toothed part; 242. Second through hole; 243. First mating recess; 30. Lock block; 31. Second mating recess; 40. Lock cylinder; 41. Guide part; 42. Rod body; 421. Second mating protrusion; 43. Cap body; 431. Drive hole; 44. Pin; 50. Reset part; 60. External tool; 61. Handle; 62. Ejector pin; 70. Fastener; 80. LED module; 81. Bracket; 811. Mounting part;

[0039] a. The inflection point between the fourth inclined segment and the first inclined segment; L1. The axis of the first straight groove segment; b. The inflection point between the first inclined segment and the second inclined segment; L2. The axis of the second straight groove segment; c. The central angle corresponding to the first curved switching segment; d. The central angle corresponding to the second curved switching segment. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1 to 11As shown, this application provides a lock for an LED display device. In this embodiment, the lock is disposed at the mounting through-hole 11 of the LED housing 10. The lock includes: a mounting base 20, a locking block 30, a lock cylinder 40, and a reset member 50. The mounting base 20 has a mounting hole 21, and an annular guide groove 22 is provided on the side wall of the mounting hole 21. The annular guide groove 22 includes a first limiting position, a second limiting position, and a first bending switching section 221 and a second bending switching section 222 connecting the first and second limiting positions. The locking block 30 is disposed outside the mounting base 20 and has a locking position intersecting the mounting through-hole 11 and an unlocking position corresponding to the mounting through-hole 11. The lock cylinder 40 is movably and rotatably disposed within the mounting hole 21. The first end of the lock cylinder 40 is connected to the locking block 30. A guide portion 41 is provided on the lock cylinder 40. The guide portion 41 is slidably inserted into the annular guide groove 22 and drives the locking block 30 to switch between the unlocking and locking positions. The guide portion 41 is located at the first... When the first limit position is reached, the locking block 30 is in the locked position; when the guide part 41 is in the second limit position, the locking block 30 is in the unlocked position. The reset member 50 is disposed in the mounting hole 21, and the two ends of the reset member 50 abut against the mounting base 20 and the lock cylinder 40 respectively to apply a reset force to the lock cylinder 40 in a direction away from the locking block 30, so that the guide part 41 is kept in the first limit position or the second limit position. When a force opposite to the reset force is applied to the locking block 30 or the lock cylinder 40, the guide part 41 enters into the first bending switching section 221 and moves to the second limit position under the action of the reset force, or the guide part 41 enters into the second bending switching section 222 and moves to the first limit position under the action of the reset force, so that the locking block 30 switches between the unlocked position and the locked position.

[0042] Using the technical solution of this embodiment, the lock is installed between the LED housing 10 and the LED module 80, and is located at the mounting through hole 11 of the LED housing 10. The lock includes a locking block 30. When the locking block 30 intersects with the mounting through hole 11 (i.e., the locking block 30 is in the locked position), the LED module 80 is locked to the LED housing 10. When the locking block 30 corresponds to the mounting through hole 11 (i.e., the locking block 30 is in the unlocked position), the LED module 80 and the LED housing 10 are unlocked, allowing the LED module 80 to be removed from the LED housing 10. The lock also includes a mounting base 20, a lock cylinder 40, and a reset member 50. The mounting base 20 is provided with an annular guide groove 22. The guide portion 41 on the lock cylinder 40 can slide within the annular guide groove 22 to drive the locking block 30 to switch between the locked and unlocked positions. The annular guide groove 22 includes a first curved switching section 221 and a second curved switching section 222. When it is necessary to switch the position of the locking block 30, it is only necessary to push the lock cylinder 40 to move along the axis of the mounting base 20 within the mounting base 20. The guide part 41 slides along the first curved switching section 221 or the second curved switching section 222, so that the lock cylinder 40 will also rotate relative to the mounting base 20 during the movement relative to the axis of the mounting base 20, thereby causing the locking block 30 to rotate with the lock cylinder 40 to switch positions. That is, during operation, the operator does not need to directly rotate the lock cylinder 40 or the locking block 30, but only needs to push the lock cylinder 40 or the locking block 30 along the axial direction of the mounting base 20. That is, the driving end of the corresponding tool (i.e., the pin 62 of the external tool 60 in this embodiment) does not need to bear torsional force, and it is not easy to break even if its radial dimension is small. Therefore, the technical solution of this embodiment can effectively solve the problem that the driving end of the tool is easy to break, which affects the maintenance efficiency in related technologies.

[0043] Specifically, such as Figure 4 As shown, in this embodiment, the annular guide groove 22 includes a first limiting position, a second limiting position, and a first bending switching section 221 and a second bending switching section 222 connecting the first limiting position and the second limiting position. When the guide part 41 is in the first limiting position, the locking block 30 is in the locked position; when the guide part 41 is in the second limiting position, the locking block 30 is in the unlocked position. When it is necessary to switch the position of the locking block 30, it is only necessary to drive the lock cylinder 40 or the locking block 30 to move relative to the mounting base 20 along its axial direction. Specifically, when the guide part 41 moves from the first limiting position through the first bending switching section 221 to the second limiting position, the locking block 30 switches from the locked position to the unlocked position; when the guide part 41 moves from the second limiting position through the second bending switching section 222 to the first limiting position, the locking block 30 switches from the unlocked position to the locked position.

[0044] Specifically, in this embodiment, the locking block 30 is a cuboid structure, and the mounting through hole 11 is a rectangular through hole adapted to the cross-sectional shape of the cuboid structure. The phrase "the locking block 30 intersects with the mounting through hole 11" means that the long side of the cuboid structure intersects with the long side of the rectangular through hole, and the cuboid structure and the solid structure around the mounting through hole 11 provide a stop fit. The phrase "the locking block 30 corresponds to the mounting through hole 11" means that the projection of the cuboid structure onto the plane of the mounting through hole 11 completely falls within the range of the mounting through hole 11. The phrase "the reset member 50 keeps the guide portion 41 in the first limit position or the second limit position" means that the reset force of the reset member 50 can push the lock cylinder 40, causing the guide portion 41 to move along the second curved switching section 222 to the first limit position and remain in the first limit position, or push the lock cylinder 40, causing the guide portion 41 to move along the first curved switching section 221 to the second limit position and remain in the second limit position.

[0045] like Figures 1 to 4 As shown, the first curved switching section 221 protrudes towards the lock block 30. The first curved switching section 221 includes a first inclined section 2211 and a second inclined section 2212 that are interconnected. After the lock cylinder 40 is pushed from the first limiting position into the first inclined section 2211, the guide part 41 moves along the first inclined section 2211 to the intersection of the first inclined section 2211 and the second inclined section 2212. During this process, the lock cylinder 40 drives the lock block 30 to move away from the mounting base 20 and rotate a certain angle. When the pushing force on the lock cylinder 40 is released, the lock cylinder 40 moves along the second inclined section 2212 to the second limiting position under the action of the reset force of the reset member 50 and remains in the second limiting position. During this process, the lock cylinder 40 drives the lock block 30 to move closer to the mounting base 20 and rotate a certain angle further. After the above actions, the lock block 30 moves from the locked position to the unlocked position (corresponding to...). Figure 11 (From top to bottom, the third to fifth states) allow the LED module 80 to be removed from the LED housing 10.

[0046] like Figures 1 to 4As shown, the second curved switching section 222 protrudes towards the lock block 30. The second curved switching section 222 includes a third inclined section 2221 and a fourth inclined section 2222 that are interconnected. The third inclined section 2221 is adjacent to the second inclined section 2212. After the lock cylinder 40 is pushed from the second limit position into the third inclined section 2221, the guide part 41 moves along the third inclined section 2221 to the intersection of the third inclined section 2221 and the fourth inclined section 2222. During this process, the lock cylinder 40 drives the lock block 30 to move away from the mounting base 20 and rotate a certain angle. When the pushing force on the lock cylinder 40 is released, the lock cylinder 40 moves along the fourth inclined section 2222 to the first limit position under the action of the reset force of the reset member 50 and remains in the first limit position. During this process, the lock cylinder 40 drives the lock block 30 to move closer to the mounting base 20 and rotate a certain angle further. After the above actions, the lock block 30 moves from the unlocked position to the locked position (corresponding to the...). Figure 11 (From top to bottom, the first to third states) enable the LED module 80 to be locked onto the LED housing 10.

[0047] Specifically, the first inclined segment 2211, the second inclined segment 2212, the third inclined segment 2221 and the fourth inclined segment 2222 can be straight segments or curved segments. Further, the first curved switching segment 221 formed by the first inclined segment 2211 and the second inclined segment 2212 can be a polygonal groove or a curved groove, and the second curved switching segment 222 formed by the third inclined segment 2221 and the fourth inclined segment 2222 can be a polygonal groove or a curved groove.

[0048] like Figures 1 to 4 As shown, the annular guide groove 22 also includes a first straight groove section 223 extending along the axial direction of the mounting base 20. The first straight groove section 223 is located between the fourth inclined section 2222 and the first inclined section 2211 and communicates with both the fourth inclined section 2222 and the first inclined section 2211. The first straight groove section 223 extends away from the locking block 30 relative to the fourth inclined section 2222 and the first inclined section 2211, and the first limiting position is located within the first straight groove section 223. The first straight groove section 223 is provided between the first inclined section 2211 and the fourth inclined section 2222 so that the guide portion 41 can be stably maintained at the first limiting position between the first inclined section 2211 and the fourth inclined section 2222.

[0049] like Figures 1 to 4As shown, the inflection point a between the fourth inclined segment 2222 and the first inclined segment 2211 is closer to the fourth inclined segment 2222 relative to the axis L1 of the first straight groove segment 223. Thus, when the lock cylinder 40 is pushed, causing the guide portion 41 to move along the first straight groove segment 223 to the intersection between the fourth inclined segment 2222 and the first inclined segment 2211, the guide portion 41 will continue to move towards the first inclined segment 2211, but will not move towards the fourth inclined segment 2222. This ensures that the guide portion 41 can move in the annular guide groove 22 in a preset direction without retraction.

[0050] Correspondingly, such as Figures 1 to 4 As shown, the annular guide groove 22 also includes a third straight groove section 225 extending along the axial direction of the mounting base 20. The third straight groove section 225 is located between the second inclined section 2212 and the third inclined section 2221 and communicates with both the second inclined section 2212 and the third inclined section 2221. The third straight groove section 225 extends away from the locking block 30 relative to the second inclined section 2212 and the third inclined section 2221. The second limiting position is located within the third straight groove section 225. The inflection point between the second inclined section 2212 and the third inclined section 2221 is closer to the second inclined section 2212 relative to the axis of the third straight groove section 225.

[0051] like Figures 1 to 4 As shown, the annular guide groove 22 also includes a second straight groove section 224 extending along the axial direction of the mounting base 20. The second straight groove section 224 is located between the first inclined section 2211 and the second inclined section 2212 and is connected to both the first inclined section 2211 and the second inclined section 2212. The second straight groove section 224 extends toward the locking block 30 relative to the first inclined section 2211 and the second inclined section 2212. The inflection point b between the first inclined section 2211 and the second inclined section 2212 is closer to the first inclined section 2211 relative to the axis L2 of the second straight groove section 224. A second straight groove section 224 is provided between the first inclined section 2211 and the second inclined section 2212, with the axis L2 offset from the inflection point b between the first inclined section 2211 and the second inclined section 2212. This allows the guide part 41 to move into the second inclined section 2212 under the action of the reset force of the reset member 50 after the pushing force on the lock cylinder 40 is removed, without moving towards the first inclined section 2211. This ensures that the guide part 41 can move in the annular guide groove 22 in a preset direction without retraction.

[0052] Correspondingly, such as Figures 1 to 4As shown, the annular guide groove 22 also includes a fourth straight groove section 226 extending along the axial direction of the mounting base 20. The fourth straight groove section 226 is located between the third inclined section 2221 and the fourth inclined section 2222 and communicates with both the third inclined section 2221 and the fourth inclined section 2222. The fourth straight groove section 226 extends toward the locking block 30 relative to the third inclined section 2221 and the fourth inclined section 2222. The inflection point between the third inclined section 2221 and the fourth inclined section 2222 is closer to the third inclined section 2221 relative to the axis of the fourth straight groove section 226.

[0053] like Figure 11 As shown, in this embodiment, the central angle c corresponding to the first bending switching segment 221 and the central angle d corresponding to the second bending switching segment 222 are 90°. The central angles corresponding to the first inclined segment 2211, the second inclined segment 2212, the third inclined segment 2221, and the fourth inclined segment 2222 are all 45°.

[0054] Figure 4 This diagram shows an unfolded view of the annular guide groove 22 of the lock according to this embodiment. The guide portion 41 can move along the annular guide groove 22 in a specified direction (i.e., Figure 4 The sliding motion repeats cyclically from right to left.

[0055] The following is combined with Figure 4 and Figure 11 The movement of the locking block 30 relative to the mounting through hole 11 is explained:

[0056] When the lock block 30 is in the unlocked position (corresponding to...) Figure 11 In the uppermost state), the axis of the locking block 30 coincides with or has only a small included angle with the axis of the mounting through hole 11, and the guide part 41 is located at the second limiting position within the third straight groove section 225;

[0057] When it is necessary to lock the LED housing 10 and the LED module 80, use the external tool 60 to push the lock cylinder 40. The guide part 41 moves along the third inclined section 2221, the lock block 30 rotates relative to the mounting through hole 11, and the guide part 41 is pushed into the fourth straight groove section 226. The lock cylinder 40 rotates 45° relative to the mounting through hole 11 (corresponding to...). Figure 11 (Second state from top to bottom in the middle); After the pushing force on the lock cylinder 40 is removed, the lock cylinder 40, under the action of the reset member 50, causes the guide part 41 to move along the fourth inclined section 2222, the lock block 30 continues to rotate relative to the mounting through hole 11, the guide part 41 is pushed into the first straight groove section 223, and the lock cylinder 40 rotates further 45° relative to the mounting through hole 11 (corresponding to the second state from top to bottom in the middle). Figure 11(The third state from top to bottom in the process), at this time, there is an angle of about 90° between the axis of the locking block 30 and the axis of the mounting through hole 11;

[0058] When it is necessary to unlock the LED housing 10 and LED module 80, use external tool 60 to push the lock cylinder 40. The guide part 41 moves along the first inclined section 2211, the lock block 30 rotates relative to the mounting through hole 11, the guide part 41 is pushed into the second straight groove section 224, and the lock cylinder 40 rotates 45° relative to the mounting through hole 11 (corresponding to...). Figure 11 (The fourth state from top to bottom in the middle); after the pushing force on the lock cylinder 40 is removed, the lock cylinder 40, under the action of the reset member 50, causes the guide part 41 to move along the second inclined section 2212, the lock block 30 continues to rotate relative to the mounting through hole 11, the guide part 41 is pushed into the third straight groove section 225, and the lock cylinder 40 rotates further 45° relative to the mounting through hole 11 (corresponding to the fourth state from top to bottom in the middle). Figure 11 (The fifth state from top to bottom in the process), at this time, the axis of the locking block 30 coincides with the axis of the mounting through hole 11 or has only a small included angle.

[0059] Lock block 30 from Figure 11 The process of rotating 360° back to the topmost state (where the locking block 30 is set to the 0° position) is as follows: The external tool 60 first presses against the lock cylinder 40, causing the locking block 30 to extend forward and rotate to the 45° position; the external tool 60 is released for the first time, causing the locking block 30 to retract and rotate to the 90° position; the external tool 60 presses against the lock cylinder 40 a second time, causing the locking block 30 to extend forward and rotate to the 135° position; the external tool 60 is released for the second time, causing the locking block 30 to retract and rotate to the 180° position; the external tool 60 presses against the lock cylinder 40 a third time, causing the locking block 30 to extend forward and rotate to the 225° position; the external tool 60 is released for the third time, causing the locking block 30 to retract and rotate to the 270° position; the external tool 60 presses against the lock cylinder 40 a fourth time, causing the locking block 30 to extend forward and rotate to the 315° position; the external tool 60 is released for the fourth time, causing the locking block 30 to retract and rotate to the 360° position (i.e., back to the 0° position).

[0060] like Figures 1 to 3 as well as Figures 5 to 8As shown, the mounting base 20 includes a first base portion 23 and a second base portion 24 nested within the first base portion 23. The first base portion 23 includes a first mounting sleeve 231, and the second base portion 24 is a second mounting sleeve. The first mounting sleeve 231 is fitted inside the second mounting sleeve. The inner holes of the first and second mounting sleeves form a mounting hole 21. The end of the first mounting sleeve 231 is provided with a first toothed portion 2311, and the inner sidewall of the second mounting sleeve is provided with a second toothed portion 241. The gap between the first and second toothed portions 2311 and 241 forms an annular guide groove 22. The mounting base 20 is configured as a split structure to facilitate the installation of the lock cylinder 40 and the reset member 50 into the mounting hole 21. By providing a first toothed portion 2311 on the first mounting sleeve 231 and a second toothed portion 241 on the second mounting sleeve, and forming an annular guide groove 22 through the gap between the first toothed portion 2311 and the second toothed portion 241, the structure has the advantages of being simple and easy to process.

[0061] Specifically, such as Figure 4 As shown, in this embodiment, the first inclined segment 2211 and the third inclined segment 2221 have the same structure, the second inclined segment 2212 and the fourth inclined segment 2222 have the same structure, the first straight groove segment 223 and the third straight groove segment 225 have the same structure, and the second straight groove segment 224 and the fourth straight groove segment 226 have the same structure, which facilitates the processing of the first toothed portion 2311 and the second toothed portion 241.

[0062] Specifically, such as Figures 5 to 8 As shown, a first mating protrusion 233 is provided on the outer wall of the first mounting sleeve 231, and a first mating recess 243 is provided on the second mounting sleeve. During the assembly of the first base body 23 and the second base body 24, the first mating protrusion 233 is inserted into the first mating recess 243 to achieve circumferential positioning between the first mounting sleeve 231 and the second mounting sleeve. A third mating protrusion 234 is also provided on the outer wall of the first mounting sleeve 231. The third mating protrusion 234 can abut against the end face of the second mounting sleeve to achieve axial positioning between the first mounting sleeve 231 and the second mounting sleeve.

[0063] like Figures 5 to 8 , Figure 12 , Figure 13 and Figure 16As shown, in this embodiment, the lock is mounted on the LED module 80. The LED module 80 includes a bracket 81, and the first base portion 23 also includes a connecting plate 232. The connecting plate 232 is located at the end of the first mounting sleeve 231 away from the second base portion 24. The connecting plate 232 has a first through hole 2321, and the first end of the lock cylinder 40 passes through the first through hole 2321. The lock is mounted on the bracket 81 via the connecting plate 232, specifically by fasteners passing through the bracket 81 and the connecting plate 232.

[0064] Specifically, such as Figure 12 , Figure 13 , Figure 16 and Figure 17 As shown, the bracket 81 is provided with a mounting part 811 that is adapted to the shape of the lock. The mounting part 811 has a first receiving cavity and a second receiving cavity that are interconnected. The first mounting sleeve 231 and the second mounting sleeve are disposed in the first receiving cavity, and the connecting plate 232 is disposed in the second receiving cavity. The first receiving cavity has a bottom wall, and the depth of the first receiving cavity is adapted to the length of the first mounting sleeve 231 and the second mounting sleeve after they are joined together. When the lock is installed on the mounting part 811, the end of the second mounting sleeve away from the first mounting sleeve abuts against the bottom wall of the first receiving cavity. The connecting plate 232 is fixedly connected to the bottom wall of the second receiving cavity. The relative position between the first seat part 23 and the second seat part 24 is fixed, that is, there is no need to set up an additional fixing structure to fix the first seat part 23 and the second seat part 24.

[0065] Of course, in order to ensure a tight connection between the second seat and the second seat, they can be made to fit together by interference fit or fasteners (such as screws) can be used to fasten them together.

[0066] like Figure 3 , Figure 5 , Figure 6 , Figure 11 and Figure 16 As shown, the second base portion 24 has a second through hole 242 at the end away from the first base portion 23. The second end of the lock cylinder 40 and the external tool 60 can pass through the second through hole 242. A drive hole 431 is provided on the end wall of the second end of the lock cylinder 40. The external tool 60 includes a handle 61 and a push pin 62. When front maintenance of the LED display device is required, especially for small-pitch LED display devices (such as display devices with a pitch of P3 or P4), through holes can be provided on the bottom wall of the first receiving cavity of the mounting portion 811 and on the lamp plate, so that the push pin can pass through the through hole and extend into the drive hole 431. Then, the operator can hold the handle 61 and push the lock cylinder 40, so that the lock cylinder 40 moves and rotates, thereby allowing the lock block 30 to switch positions.

[0067] Specifically, in this embodiment, since it is not necessary to use tools to directly rotate the lock cylinder 40 or the lock block 30, the radial dimension of the ejector pin 62 can be set to be small, for example, the diameter of the ejector pin 62 can be between 0.5mm and 2mm.

[0068] As shown in the figure Figure 3 as well as Figure 9 As shown, the lock cylinder 40 includes a rod portion 42 and a cap portion 43 located at the end of the rod portion 42 away from the lock block 30. A reset member 50 is sleeved on the rod portion 42, with both ends of the reset member 50 abutting against the connecting plate 232 and the cap portion 43, respectively. The lock cylinder 40 also includes a pin 44 passing through the cap portion 43, with the end of the pin 44 protruding from the side wall of the cap portion 43 to form a guide portion 41. By providing a pin 44 in the cap portion 43 to form the guide portion 41, compared to directly machining a guide protrusion on the cap portion 43, it has the advantages of simple structure and easy processing. Specifically, in this embodiment, the reset member 50 is a compression spring. The two ends of the compression spring abut against the connecting plate 232 and the cap portion 43, respectively, so that the guide portion 41 can be held in a first limit position or a second limit position. The pin 44 passing through the cap portion 43 can avoid interference with the reset member 50.

[0069] like Figures 1 to 3 , Figure 9 as well as Figure 10 As shown, the rod body 42 is provided with a second mating protrusion 421, and the lock block 30 is provided with a second mating recess 31. During assembly, the second mating protrusion 421 is first inserted into the second mating recess 31, and then the lock cylinder 40 and the lock block 30 are fixed together by fasteners 70.

[0070] like Figures 12 to 17 As shown, this application also provides an LED display device. An embodiment of the LED display device includes an LED housing 10, an LED module 80 disposed on the front side of the LED housing 10, and a lock disposed between the LED housing 10 and the LED module 80. The lock is the aforementioned lock, which effectively solves the problem in related technologies where the drive end of the tool is easily broken, affecting maintenance efficiency. The LED display device with the aforementioned lock also has the aforementioned advantages.

[0071] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0072] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lock for an LED display device, the lock being disposed at a mounting through hole (11), characterized in that, The lock includes: Mounting base (20), the mounting base (20) has mounting hole (21), and an annular guide groove (22) is provided on the side wall of the mounting hole (21). The annular guide groove (22) includes a first limiting position, a second limiting position, and a first bending switching section (221) and a second bending switching section (222) connected between the first limiting position and the second limiting position. A locking block (30) is disposed outside the mounting base (20) and has a locking position intersecting the mounting through hole (11) and an unlocking position corresponding to the mounting through hole (11); A lock cylinder (40) is movably and rotatably disposed in the mounting hole (21). The first end of the lock cylinder (40) is connected to the lock block (30). A guide part (41) is provided on the lock cylinder (40). The guide part (41) is slidably inserted into the annular guide groove (22) and drives the lock block (30) to switch between the unlock position and the locked position. When the guide part (41) is in the first limiting position, the lock block (30) is in the locked position. When the guide part (41) is in the second limiting position, the lock block (30) is in the unlock position. A reset member (50) is disposed in the mounting hole (21). The two ends of the reset member (50) abut against the mounting base (20) and the lock cylinder (40) respectively to apply a reset force to the lock cylinder (40) in a direction away from the lock block (30) so that the guide part (41) is held in the first limit position or the second limit position. When a force opposite to the reset force is applied to the lock block (30) or the lock cylinder (40), the guide part (41) enters the first bending switching section (221) and moves to the second limit position under the action of the reset force, or the guide part (41) enters the second bending switching section (222) and moves to the first limit position under the action of the reset force, so that the lock block (30) switches between the unlock position and the locked position.

2. The lock according to claim 1, characterized in that, The first bending switching section (221) is provided protruding toward the locking block (30), and the first bending switching section (221) includes a first inclined section (2211) and a second inclined section (2212) that are interconnected.

3. The lock according to claim 2, characterized in that, The second bending switching section (222) protrudes toward the locking block (30). The second bending switching section (222) includes a third inclined section (2221) and a fourth inclined section (2222) that are interconnected. The third inclined section (2221) is arranged adjacent to the second inclined section (2212).

4. The lock according to claim 3, characterized in that, The annular guide groove (22) further includes a first straight groove section (223) extending along the axial direction of the mounting base (20). The first straight groove section (223) is located between the fourth inclined section (2222) and the first inclined section (2211) and communicates with both the fourth inclined section (2222) and the first inclined section (2211). The first straight groove section (223) extends away from the locking block (30) relative to the fourth inclined section (2222) and the first inclined section (2211). The first limiting position is located within the first straight groove section (223).

5. The lock according to claim 4, characterized in that, The inflection point (a) between the fourth inclined segment (2222) and the first inclined segment (2211) is closer to the fourth inclined segment (2222) relative to the axis (L1) of the first straight groove segment (223).

6. The lock according to claim 3, characterized in that, The annular guide groove (22) further includes a second straight groove section (224) extending along the axial direction of the mounting base (20). The second straight groove section (224) is located between the first inclined section (2211) and the second inclined section (2212) and communicates with both the first inclined section (2211) and the second inclined section (2212). The second straight groove section (224) extends toward the locking block (30) relative to the first inclined section (2211) and the second inclined section (2212). The inflection point (b) between the first inclined section (2211) and the second inclined section (2212) is closer to the first inclined section (2211) relative to the axis (L2) of the second straight groove section (224).

7. The lock according to claim 3, characterized in that, The central angle (c) corresponding to the first bending switching segment (221) and / or the central angle (d) corresponding to the second bending switching segment (222) is 90°.

8. The lock according to any one of claims 1 to 7, characterized in that, The mounting base (20) includes a first base part (23) and a second base part (24) nested with the first base part (23). The first base part (23) includes a first mounting sleeve (231), and the second base part (24) is a second mounting sleeve. The first mounting sleeve (231) is sleeved inside the second mounting sleeve. The inner hole of the first mounting sleeve (231) and the inner hole of the second mounting sleeve form the mounting hole (21). The end of the first mounting sleeve (231) is provided with a first toothed part (2311), and the inner sidewall of the second mounting sleeve is provided with a second toothed part (241). The gap between the first toothed part (2311) and the second toothed part (241) forms the annular guide groove (22).

9. The lock according to claim 8, characterized in that, The first seat body (23) also includes a connecting plate (232), which is disposed at the end of the first mounting sleeve (231) away from the second seat body (24). The connecting plate (232) is provided with a first through hole (2321), and the first end of the lock cylinder (40) passes through the first through hole (2321).

10. The lock according to claim 9, characterized in that, The second seat portion (24) has a second through hole (242) at one end away from the first seat portion (23), through which the second end of the lock cylinder (40) and / or an external tool (60) can pass. A drive hole (431) is provided on the end wall of the second end of the lock cylinder (40).

11. The lock according to claim 10, characterized in that, The lock cylinder (40) includes a rod body (42) and a cap body (43) disposed at one end of the rod body (42) away from the lock block (30). The reset member (50) is sleeved on the rod body (42) and the two ends of the reset member (50) abut against the connecting plate (232) and the cap body (43) respectively. The lock cylinder (40) also includes a pin (44) passing through the cap body (43). The end of the pin (44) protrudes from the side wall of the cap body (43) to form the guide portion (41).

12. An LED display device, comprising a lock, characterized in that, The lock is the lock as described in any one of claims 1 to 11.

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