Arc splicing lock and LED display screen with same

Abstract

The application provides an arc splicing lock and an LED display screen with the same. The arc splicing lock comprises a seat body for connecting with one of two adjacent display screen units, and a rotating member rotatably arranged on the seat body around its own axis. A first end of the rotating member is located outside the seat body, and at least two contact surfaces are arranged on an end face of the first end of the rotating member. The at least two contact surfaces are distributed along the circumference of the rotating member, and one of the at least two contact surfaces can be selectively brought into contact with the other of the two adjacent display screen units by rotating the rotating member. An included angle between the contact surface and the axis of the rotating member is an inclination angle of the contact surface, and the inclination angles of the at least two contact surfaces are different from each other. The technical scheme provided by the application can solve the problem of poor versatility of the splicing lock in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display screen splicing, in particular to an arc splicing lock and an LED display screen with the same. BACKGROUND

[0002] At present, LED display screens are widely used in the stage, commercial performance, advertising, exhibition and other industries due to their excellent display effect and applicability. With the development of the LED display screen industry, the diversification of LED display screens is increasingly increasing, and the arc screen structure has become a new demand of people.

[0003] In the related art, in order to meet the needs of arc splicing of LED display screens, customized splicing locks are used to connect multiple display screen units.

[0004] However, the angle of the splicing lock in the related art is fixed, which causes the problem of poor universality of the splicing lock. SUMMARY

[0005] The present application provides an arc splicing lock and an LED display screen with the same to solve the problem of poor universality of the splicing lock in the related art.

[0006] According to one aspect of the present application, an arc splicing lock is provided, which comprises: a seat body for connecting with one of two adjacent display screen units; a rotating member rotatably arranged on the seat body about its own axis, a first end of the rotating member being located outside the seat body, at least two contact surfaces being arranged on the end face of the first end of the rotating member, the at least two contact surfaces being distributed along the circumference of the rotating member, and the at least two contact surfaces being selectively brought into contact with the other of the two adjacent display screen units by rotating the rotating member; wherein the included angle between the contact surface and the axis of the rotating member is the inclination angle of the contact surface, and the inclination angles of the at least two contact surfaces are different from each other.

[0007] Further, at least two protrusions with different heights are arranged on the first end of the rotating member, the at least two protrusions being distributed along the circumference of the rotating member, and at least part of the end face of the protrusion forms the contact surface.

[0008] Further, each protrusion comprises a first boss and a second boss, the first boss and the second boss being symmetrically arranged on both sides of the axis of the rotating member, the end face of the first boss and the end face of the second boss being coplanar to jointly form the contact surface.

[0009] Further, a lock hole is arranged on the end face of the first boss, and a positioning hole or a positioning column is arranged on the end face of the second boss.

[0010] Further, the seat body has a through hole, the rotating member is rotatably arranged in the through hole, and the arc splicing lock further comprises a rotation stopping structure arranged between the seat body and the part of the rotating member located in the through hole to limit the rotation of the rotating member relative to the seat body.

[0011] Further, the rotation stopping structure comprises a rotation stopping block and at least two rotation stopping grooves, the side wall of the seat body is provided with a through avoiding hole communicating with the through hole, the rotation stopping block is movably arranged in the avoiding hole, the at least two rotation stopping grooves are arranged on the outer side wall of the rotating member and correspond to the at least two contact surfaces one by one, and the rotation stopping block has a rotation stopping position extending into the rotation stopping groove and an avoiding position out of the rotation stopping groove.

[0012] Further, the rotation stopping structure further comprises a fastening handle and an elastic member, the fastening handle is rotatably arranged above the rotation stopping block and cooperates with the rotation stopping block, the rotation stopping block is pressed down by rotating the fastening handle to move the rotation stopping block from the avoiding position to the rotation stopping position, and one end of the elastic member is connected with the inner wall of the avoiding hole and the other end of the elastic member is connected with the rotation stopping block to apply an elastic force to the rotation stopping block in a direction away from the rotating member.

[0013] Further, the rotation stopping structure further comprises a ball arranged on the surface of the rotation stopping block facing the fastening handle, the side wall of the fastening handle is provided with a first arc-shaped groove and a second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are arranged at intervals along the rotation direction of the fastening handle, and the distance from the bottom of the first arc-shaped groove to the rotation center of the fastening handle is greater than the distance from the bottom of the second arc-shaped groove to the rotation center of the fastening handle.

[0014] Further, the elastic member comprises a buffer rubber pad, the rotation stopping block comprises a rotation stopping block main body and an annular boss arranged at one end of the rotation stopping block main body facing the fastening handle, the avoiding hole comprises a first hole section and a second hole section communicating with each other, the second hole section is located between the first hole section and the through hole, the hole diameter of the first hole section is greater than that of the second hole section to form an annular step surface therebetween, the outer side wall of the annular boss is fitted with the inner side wall of the first hole section, the outer side wall of the rotation stopping block main body is fitted with the inner side wall of the second hole section, one side of the buffer rubber pad is fitted with the annular boss, and the other side of the buffer rubber pad is fitted with the annular step surface.

[0015] Further, the seat body has a through hole, the rotating member is rotatably arranged in the through hole, and the arc splicing lock further comprises a feedback spring and a plurality of feedback teeth, the feedback spring is arranged on the seat body and extends into the through hole, and the plurality of feedback teeth are arranged on the outer side wall of the rotating member in the circumferential direction of the rotating member, and the feedback spring is engaged with the feedback teeth.

[0016] Further, the seat body has a through hole, the rotating member includes a knob member and a flange member connected with each other, the knob member is rotatably arranged in the through hole, the flange member is arranged outside the through hole, the contact surface is arranged on an end surface of the flange member away from the through hole, and an end of the knob member away from the flange member is provided with a knob part, and the knob part is arranged outside the through hole.

[0017] Further, the first end surface of the rotating member is provided with a first contact surface, a second contact surface and a third contact surface, the first contact surface, the second contact surface and the third contact surface are uniformly distributed in the circumferential direction of the rotating member, the inclination angle of the first contact surface is positive, the inclination angle of the second contact surface is 0°, and the inclination angle of the third contact surface is negative.

[0018] According to another aspect of the present application, an LED display screen is provided, which comprises: at least two display screen units, each of the display screen units comprising a frame and a display screen arranged on the frame; and an arc splicing lock arranged between two adjacent display screen units, a seat body of the arc splicing lock being connected with the frame of one of the two adjacent display screen units, and a contact surface of the arc splicing lock abutting against the frame of the other of the two adjacent display screen units, the arc splicing lock being the arc splicing lock provided above.

[0019] According to the technical scheme of the present application, the arc splicing lock comprises a seat body and a rotating member, when the rotating member rotates relative to the seat body around its own axis, since the first end of the rotating member is provided with at least two contact surfaces and the first end of the rotating member is arranged outside the seat body, the arc splicing lock can select one of the at least two contact surfaces to complete splicing with the two adjacent display screen units, and since the at least two contact surfaces are distributed along the circumferential direction of the rotating member and the inclination angles of the at least two contact surfaces are different from each other, the seat body is connected with one of the two adjacent display screen units, and by rotating the rotating member, one of the at least two contact surfaces can be selectively brought into contact with the other of the two adjacent display screen units, so that the two adjacent display screen units can be spliced at different angles by the arc splicing lock, and the versatility of the arc splicing lock is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0021] Figure 1 A structure schematic view of the rotation stopping block of the arc splicing lock provided by the embodiment of the present application at a rotation stopping position is shown;

[0022] Figure 2 An exploded view of the arc splicing lock provided by the embodiment of the present application is shown.

[0023] Figure 3 An exploded view of another perspective of the arc splicing lock provided by the embodiment of the present application is shown;

[0024] Figure 4 A front view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at a rotation-stopping position is shown;

[0025] Figure 5 A cross-sectional view of Figure 4 the embodiment of the present application at A-A is shown;

[0026] Figure 6 A cross-sectional view of Figure 4 the embodiment of the present application at B-B is shown;

[0027] Figure 7 A structural schematic view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at an avoiding position is shown;

[0028] Figure 8 A front view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at an avoiding position is shown;

[0029] Figure 9 A cross-sectional view of Figure 8 the embodiment of the present application at C-C is shown;

[0030] Figure 10 A cross-sectional view of Figure 8 the embodiment of the present application at D-D is shown;

[0031] Figure 11 A right view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at a rotation-stopping position is shown;

[0032] Figure 12 A left view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at a rotation-stopping position is shown;

[0033] Figure 13 A top view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at a rotation-stopping position is shown;

[0034] Figure 14 A right view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at an avoiding position is shown;

[0035] Figure 15 A left view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at an avoiding position is shown;

[0036] Figure 16 A top view of the rotation-stopping block of the arc splicing lock provided by the embodiment of the present application at an avoiding position is shown;

[0037] Figure 17 This diagram illustrates the structure of the display unit and the arc splicing lock provided in an embodiment of the present invention.

[0038] Figure 18 This diagram illustrates a structural schematic of the display unit and the arc splicing lock provided in an embodiment of the present invention from another perspective.

[0039] Figure 19 This diagram illustrates a structural schematic of the display unit and the arc splicing lock provided in an embodiment of the present invention from another perspective.

[0040] Figure 20 A schematic diagram of the structure of the LED display screen provided in an embodiment of the present invention is shown;

[0041] Figure 21 This diagram illustrates the structure of an LED display screen assembled via a first contact surface, as provided in an embodiment of the present invention.

[0042] Figure 22 This is a schematic diagram of the structure of an LED display screen assembled via a second contact surface according to an embodiment of the present invention;

[0043] Figure 23 This diagram illustrates the structure of an LED display screen assembled via a third contact surface, as provided in an embodiment of the present invention.

[0044] The above figures include the following reference numerals:

[0045] 10. Base; 11. Through hole; 12. Clearance hole; 121. First hole section; 122. Second hole section;

[0046] 20. Rotating component; 21. Contact surface; 211. First contact surface; 212. Second contact surface; 213. Third contact surface; 22. Knob component; 221. Knob part; 23. Flange component;

[0047] 30. Protrusion; 31. First boss; 311. Locking hole; 32. Second boss; 321. Positioning hole;

[0048] 40. Anti-rotation structure; 41. Anti-rotation block; 411. Annular boss; 412. Anti-rotation block body; 42. Anti-rotation groove; 43. Fastening handle; 431. First arc groove; 432. Second arc groove; 44. Ball bearing; 45. Elastic element; 451. Buffer pad;

[0049] 51. Feedback spring; 52. Feedback tooth;

[0050] 61. Display unit; 611. Frame; 62. Curved splicing lock. Detailed Implementation

[0051] 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.

[0052] like Figures 1 to 16 As shown, this embodiment of the invention provides an arc splicing lock, which includes a base 10 and a rotating member 20. The base 10 is used to connect with one of two adjacent display screen units. The rotating member 20 is rotatably disposed on the base 10 about its own axis. The first end of the rotating member 20 is located outside the base 10. At least two contact surfaces 21 are provided on the end face of the first end of the rotating member 20. The at least two contact surfaces 21 are distributed along the circumference of the rotating member 20. By rotating the rotating member 20, one of the at least two contact surfaces 21 can be selectively contacted and engaged with the other display screen unit in the two adjacent display screen units. The angle between the contact surface 21 and the axis of the rotating member 20 is the tilt angle of the contact surface 21, and the tilt angles of the at least two contact surfaces 21 are different from each other.

[0053] The arc splicing lock provided in this embodiment includes a base 10 and a rotating member 20. When the rotating member 20 rotates relative to the base 10 around its own axis, since at least two contact surfaces 21 are provided on the end face of the first end of the rotating member 20, and the first end of the rotating member 20 is located outside the base 10, the arc splicing lock can select one of the at least two contact surfaces 21 to complete the splicing with two adjacent display screen units. Furthermore, since the at least two contact surfaces 21 are distributed along the circumference of the rotating member 20, and the tilt angles of the at least two contact surfaces 21 are different, the base 10 is connected to one of the two adjacent display screen units. By rotating the rotating member 20, one of the at least two contact surfaces 21 can be selectively made to contact and cooperate with the other display screen unit in the two adjacent display screen units. Thus, the two adjacent display screen units can be spliced ​​at different angles through the arc splicing lock, improving the versatility of the arc splicing lock.

[0054] like Figure 1As shown, at least two protrusions 30 of different heights are provided on the first end of the rotating member 20. The at least two protrusions 30 are distributed circumferentially along the rotating member 20, and at least a portion of the end face of the protrusions 30 forms a contact surface 21. By providing at least two protrusions 30 of different heights on the first end of the rotating member 20, and by forming a contact surface 21 on at least a portion of the end face of the protrusions 30, a height difference is created between the contact surfaces. This prevents interference from other contact surfaces 21 when two adjacent display units are assembled through any contact surface 21, ensuring the reliability of the splicing angle of the arc splicing lock.

[0055] It should be noted that the height of the protrusion 30 refers to the distance projected onto the end face of the first end of the rotating member 20 from the farthest point of the protrusion 30 in the axial direction of the rotating member 20.

[0056] like Figure 1 As shown, each protrusion 30 includes a first protrusion 31 and a second protrusion 32. The first protrusion 31 and the second protrusion 32 are symmetrically arranged on both sides of the axis of the rotating member 20. The end faces of the first protrusion 31 and the second protrusion 32 are coplanar to form a contact surface 21. When two adjacent display screen units are assembled through the contact surface 21, by symmetrically arranging the first protrusion 31 and the second protrusion 32 on both sides of the axis of the rotating member 20, the display screen unit is subjected to a force symmetrical with respect to the axis of the rotating member 20, which increases the stress stability of the display screen unit and thus improves the assembly stability of the arc splicing lock.

[0057] Specifically, the end face of the first boss 31 forms a first sub-contact surface, and the end face of the second boss 32 forms a second sub-contact surface. The first sub-contact surface and the second sub-contact surface are coplanar, and the first sub-contact surface and the second sub-contact surface together constitute a contact surface 21.

[0058] like Figure 1 As shown, a locking hole 311 is provided on the end face of the first boss 31, and a positioning hole 321 or a positioning post is provided on the end face of the second boss 32. In two adjacent display screen units 61, the base 10 of the arc splicing lock is connected to one display screen unit 61, and a movable locking rod is provided on the other display screen unit 61. When the two adjacent display screen units 61 are assembled, the positioning effect of the positioning hole 321 or the positioning post ensures the accuracy of the installation position of the arc splicing lock, and the locking hole 311 and the locking rod cooperate to lock the two adjacent display screen units.

[0059] In this embodiment, a positioning hole 321 is provided on the end face of the second protrusion 32. In two adjacent display screen units 61, the base 10 of the arc splicing lock is connected to one display screen unit 61, and a fixed positioning post is provided on the other display screen unit 61. Since the positioning post passes through the positioning hole 321, the positioning effect of the positioning post on the positioning hole 321 ensures the accuracy of the installation position of the arc splicing lock relative to the other display screen unit 61.

[0060] like Figure 5 and Figure 9 As shown, the base 10 has a through hole 11, and the rotating member 20 is rotatably inserted through the through hole 11. The arc splicing lock also includes an anti-rotation structure 40, which is disposed between the base 10 and the portion of the rotating member 20 located within the through hole 11, to restrict the rotation of the rotating member 20 relative to the base 10. When two adjacent display screen units are assembled through the contact surface 21, the anti-rotation structure 40 prevents the rotating member 20 from rotating after the arc splicing lock is installed, thus preventing the contact surface 21 selected during the assembly of two adjacent display screen units from changing and ensuring the splicing reliability of the arc splicing lock.

[0061] like Figure 5 and Figure 9 As shown, the anti-rotation structure 40 includes an anti-rotation block 41 and at least two anti-rotation grooves 42. A through clearance hole 12 is provided on the side wall of the base 10, communicating with the through hole 11. The anti-rotation block 41 is movably inserted into the clearance hole 12. The anti-rotation grooves 42 are provided on the outer side wall of the rotating member 20. At least two anti-rotation grooves 42 correspond one-to-one with at least two contact surfaces 21. The anti-rotation block 41 has an anti-rotation position extending into the anti-rotation groove 42 and a clearance position disengaging from the anti-rotation groove 42. When installing the arc-shaped splicing lock, the anti-rotation block 41 disengages from the anti-rotation groove 42. After rotating the rotating member 20 to select a suitable contact surface 21, the anti-rotation block 41 is inserted into the corresponding anti-rotation groove 42, thereby preventing the rotating member 20 from rotating after the arc-shaped splicing lock installation is completed.

[0062] Specifically, at least two anti-rotation slots 42 are configured to correspond one-to-one with at least two contact surfaces 21. This means that each anti-rotation slot 42 corresponds to one and only one contact surface 21, and each contact surface 21 corresponds to one and only one anti-rotation slot 42. When the anti-rotation block 41 extends into an anti-rotation slot 42, two adjacent display screen units are spliced ​​together through one and only one contact surface 21, with each contact surface 21 corresponding to one and only one anti-rotation slot 42.

[0063] like Figure 5 and Figure 9As shown, the anti-rotation structure 40 also includes a fastening handle 43 and an elastic member 45. The fastening handle 43 is rotatably disposed above the anti-rotation block 41. The fastening handle 43 cooperates with the anti-rotation block 41. By rotating the fastening handle 43, the anti-rotation block 41 is pressed down, so that the anti-rotation block 41 moves from the clearance position to the anti-rotation position. One end of the elastic member 45 is connected to the inner wall of the clearance hole 12, and the other end of the elastic member 45 is connected to the anti-rotation block 41, so that the elastic member 45 applies a spring force to the anti-rotation block 41 in a direction away from the rotating member 20. When installing the arc-shaped splicing lock, after rotating the rotating part 20 to select a suitable contact surface 21, rotate the fastening handle 43 to drive the anti-rotation block 41 into the corresponding anti-rotation groove 42. The elastic element 45 deforms. When disassembling the arc-shaped splicing lock, rotate the fastening handle 43. The elastic deformation force of the elastic element 45 drives the anti-rotation block 41 to disengage from the anti-rotation groove 42. By rotating the fastening handle 43, the anti-rotation block 41 can be driven to move between the anti-rotation position and the avoidance position, which facilitates the user's operation and improves the connection efficiency and user experience of the arc-shaped splicing lock.

[0064] like Figure 5 and Figure 9 As shown, the anti-rotation structure 40 also includes ball bearings 44, which are disposed on the surface of the anti-rotation block 41 facing the fastening handle 43. The side wall of the fastening handle 43 is provided with a first arc-shaped groove 431 and a second arc-shaped groove 432, which are spaced apart along the rotation direction of the fastening handle 43. The distance from the bottom of the first arc-shaped groove 431 to the rotation center of the fastening handle 43 is greater than the distance from the bottom of the second arc-shaped groove 432 to the rotation center of the fastening handle 43. By providing the ball bearings 44, the fastening handle 43 indirectly contacts the anti-rotation block 41 through the ball bearings 44, reducing the external driving force required for the anti-rotation block 41, facilitating user operation, and improving the connection efficiency of the arc-shaped splicing lock. Furthermore, since the distance from the bottom of the first arc-shaped groove 431 to the rotation center of the fastening handle 43 is greater than the distance from the bottom of the second arc-shaped groove 432 to the rotation center of the fastening handle 43, when the anti-rotation block 41 is in the avoidance position, after rotating the rotating member 20 to select a suitable contact surface 21, rotating the fastening handle 43 causes the ball 44 to be located in the first arc-shaped groove 431, and the anti-rotation block 41 to extend into the corresponding anti-rotation groove 42. The elastic member 45 deforms, and when driving the anti-rotation block 41 to move to the avoidance position, rotating the fastening handle 43 again causes the ball 44 to be located in the second arc-shaped groove 432. The deformation force of the elastic member 45 drives the anti-rotation block 41 to disengage from the anti-rotation groove 42.

[0065] like Figure 5 and Figure 9As shown, the elastic element 45 includes a buffer pad 451, the anti-rotation block 41 includes an anti-rotation block body 412 and an annular boss 411 disposed at one end of the anti-rotation block body facing the fastening handle 43, the clearance hole 12 includes a first hole segment 121 and a second hole segment 122 that are connected, the second hole segment 122 is located between the first hole segment 121 and the through hole 11, and the diameter of the first hole segment 121 is larger than the diameter of the second hole segment 122 to form an annular step surface between the two, the outer side wall of the annular boss 411 is in contact with the inner side wall of the first hole segment 121, the outer side wall of the anti-rotation block body 412 is in contact with the inner side wall of the second hole segment 122, one side of the buffer pad 451 is in contact with the annular boss 411, and the other side of the buffer pad 451 is in contact with the annular step surface. When the ball bearing 44 is located in the first arc-shaped groove 431, the anti-rotation block 41 extends into the corresponding anti-rotation groove 42, the annular boss 411 approaches the annular step surface, and the buffer pad 451 undergoes compression deformation. When disassembling the arc splicing lock, rotating the fastening handle 43 causes the ball bearing 44 to be located in the second arc-shaped groove 432. The compression deformation force of the buffer pad 451 drives the anti-rotation block 41 to disengage from the anti-rotation groove 42. Furthermore, since one side of the buffer pad 451 is in contact with the annular boss 411 and the other side of the buffer pad 451 is in contact with the annular step surface, the contact area of ​​the buffer pad 451 is increased, ensuring that the anti-rotation block 41 is subjected to uniform force and moves smoothly.

[0066] like Figure 6 and Figure 10 As shown, the base 10 has a through hole 11, through which the rotating member 20 rotatably passes. The arc-shaped splicing lock also includes a feedback spring 51 and multiple feedback teeth 52. The feedback spring 51 is disposed on the base 10 and extends into the through hole 11. The multiple feedback teeth 52 are disposed on the outer side wall of the rotating member 20 along its circumference, and the feedback spring 51 meshes with the feedback teeth 52. By providing the meshing feedback spring 51 and multiple feedback teeth 52, the user receives mechanical feedback when the rotating member 20 rotates relative to the base 10, thus improving the user experience.

[0067] like Figure 2 and Figure 3 As shown, the base 10 has a through hole 11. The rotating component 20 includes a knob 22 and a flange 23 connected to each other. The knob 22 is rotatably inserted through the through hole 11, and the flange 23 is located outside the through hole 11. The contact surface 21 is provided on the end face of the flange 23 away from the through hole 11. A knob portion 221 is provided at the end of the knob 22 away from the flange 23, and the knob portion 221 is located outside the through hole 11. By applying torque to the knob portion 221, the rotating component 20 is driven to rotate relative to the through hole 11. When the rotating component 20 moves relative to the through hole 11, the external driving force required for the arc splicing lock is reduced, making it easier for the user to use and improving the connection efficiency and user experience of the arc splicing lock.

[0068] In this embodiment, the knob 22 and the flange 23 are fixedly connected by fasteners.

[0069] like Figure 1 As shown, a first contact surface 211, a second contact surface 212, and a third contact surface 213 are provided on the end face of the first end of the rotating member 20. The first contact surface 211, the second contact surface 212, and the third contact surface 213 are evenly distributed in the circumferential direction of the rotating member 20. The tilt angle of the first contact surface 211 is positive, the tilt angle of the second contact surface 212 is 0°, and the tilt angle of the third contact surface 213 is negative.

[0070] like Figures 21 to 23 As shown, when two adjacent display screen units are assembled through the first contact surface 211, the two adjacent display screen units are assembled with an outer arc; when two adjacent display screen units are assembled through the second contact surface 212, the two adjacent display screen units are assembled with a flat surface; and when two adjacent display screen units are assembled through the third contact surface 213, the two adjacent display screen units are assembled with an inner arc.

[0071] In this embodiment, the tilt angle of the first contact surface 211 is 5°, the tilt angle of the second contact surface 212 is 0°, and the tilt angle of the third contact surface 213 is -5°.

[0072] It should be noted that the uniform distribution of the first contact surface 211, the second contact surface 212, and the third contact surface 213 in the circumferential direction of the rotating member 20 means that the first contact surface 211, the second contact surface, and the third contact surface each occupy 120° in the circumferential direction at the first end of the rotating member.

[0073] like Figures 17 to 23As shown, another embodiment of the present invention provides an LED display screen, which includes at least two display screen units 61 and an arc splicing lock 62. The display screen unit 61 includes a frame 611 and a display screen disposed on the frame 611. The arc splicing lock 62 is disposed between two adjacent display screen units 61. The base 10 of the arc splicing lock 62 is connected to the frame 611 of one of the two adjacent display screen units 61, and the contact surface 21 of the arc splicing lock 62 abuts against the frame 611 of the other two adjacent display screen units 61. The arc splicing lock 62 is the arc splicing lock provided above. Therefore, in this embodiment, by rotating the rotating component 20, the contact surface 21 that abuts against the frame 611 of the other display unit 61 in the two adjacent display units 61 can be changed. Furthermore, since at least two contact surfaces 21 are distributed along the circumference of the rotating component 20, and the tilt angles of at least two contact surfaces 21 are different, the two adjacent display units 61 can be assembled at different angles through the arc splicing lock 62, thereby improving the versatility of the arc splicing lock 62.

[0074] The technical solution provided by this invention has the following beneficial effects:

[0075] (1) Since at least two contact surfaces 21 are distributed along the circumference of the rotating part 20, and the tilt angles of at least two contact surfaces 21 are different, when the rotating part 20 rotates around its own axis, adjacent display screen units can be assembled at different angles through the arc splicing lock, thereby improving the versatility of the arc splicing lock.

[0076] (2) By setting the anti-rotation structure 40, the rotating part 20 is prevented from rotating after the arc splicing lock is installed, and the contact surface 21 selected when assembling two adjacent display screen units is changed, thus ensuring the splicing reliability of the arc splicing lock.

[0077] (3) By setting meshing feedback springs 51 and multiple feedback teeth 52, when the rotating part 20 rotates relative to the seat, the user receives mechanical feedback, thereby improving the user experience.

[0078] (4) By setting the knob part 221 and the fastening handle 43, the external driving force required for the arc splicing lock is reduced, and it is convenient for users to use, thereby improving the connection efficiency and user experience of the arc splicing lock.

[0079] 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. An arc-shaped splicing lock, characterized in that, The arc splicing lock includes: A base (10) for connecting to one of two adjacent display units (61); A rotating component (20) is rotatably disposed on the base (10) about its own axis. The first end of the rotating component (20) is located outside the base (10). At least two contact surfaces (21) are provided on the end face of the first end of the rotating component (20). The at least two contact surfaces (21) are distributed along the circumference of the rotating component (20). By rotating the rotating component (20), one of the contact surfaces (21) can be selectively made to contact and cooperate with the other display screen unit (61) in the two adjacent display screen units (61). The angle between the contact surface (21) and the axis of the rotating member (20) is the inclination angle of the contact surface (21), and the inclination angles of at least two contact surfaces (21) are different from each other; The first end of the rotating member (20) is provided with at least two protrusions (30) of different heights, and the at least two protrusions (30) are distributed circumferentially along the rotating member (20), and at least a portion of the end face of the protrusions (30) forms the contact surface (21). The base (10) has a through hole (11) through which the rotating member (20) is rotatably inserted. The arc splicing lock also includes an anti-rotation structure (40), which is disposed between the base (10) and the portion of the rotating member (20) located in the through hole (11) to restrict the rotating member (20) from rotating relative to the base (10). The anti-rotation structure (40) includes an anti-rotation block (41) and at least two anti-rotation grooves (42). A through clearance hole (12) is provided on the side wall of the seat (10). The clearance hole (12) is connected to the through hole (11). The anti-rotation block (41) is movably inserted into the clearance hole (12). The anti-rotation groove (42) is provided on the outer side wall of the rotating member (20). At least two of the anti-rotation grooves (42) are provided in correspondence with at least two of the contact surfaces (21). The anti-rotation block (41) has an anti-rotation position that extends into the anti-rotation groove (42) and a clearance position that disengages from the anti-rotation groove (42). The anti-rotation structure (40) further includes a fastening handle (43) and an elastic element (45). The fastening handle (43) is rotatably disposed above the anti-rotation block (41). The fastening handle (43) cooperates with the anti-rotation block (41). By rotating the fastening handle (43), the anti-rotation block (41) is pressed down, so that the anti-rotation block (41) moves from the clearance position to the anti-rotation position. One end of the elastic element (45) is connected to the inner wall of the clearance hole (12), and the other end of the elastic element (45) is connected to the anti-rotation block (41) so that the elastic element (45) applies a spring force to the anti-rotation block (41) in a direction away from the rotating element (20).

2. The arc-shaped splicing lock according to claim 1, characterized in that, Each of the protrusions (30) includes a first protrusion (31) and a second protrusion (32), the first protrusion (31) and the second protrusion (32) are symmetrically arranged on both sides of the axis of the rotating member (20), and the end face of the first protrusion (31) and the end face of the second protrusion (32) are coplanar to jointly form the contact surface (21).

3. The arc-shaped splicing lock according to claim 2, characterized in that, The first boss (31) has a locking hole (311) on its end face, and the second boss (32) has a positioning hole (321) or a positioning post on its end face.

4. The arc-shaped splicing lock according to claim 1, characterized in that, The anti-rotation structure (40) further includes a ball (44) disposed on the surface of the anti-rotation block (41) facing the fastening handle (43). The fastening handle (43) has a first arc groove (431) and a second arc groove (432) on its side wall. The first arc groove (431) and the second arc groove (432) are spaced apart along the rotation direction of the fastening handle (43). The distance from the bottom of the first arc groove (431) to the rotation center of the fastening handle (43) is greater than the distance from the bottom of the second arc groove (432) to the rotation center of the fastening handle (43).

5. The arc-shaped splicing lock according to claim 4, characterized in that, The elastic element (45) includes a buffer pad (451), the anti-rotation block (41) includes an anti-rotation block body (412) and an annular boss (411) disposed at one end of the anti-rotation block body (412) facing the fastening handle (43), the clearance hole (12) includes a first hole segment (121) and a second hole segment (122) that are connected, the second hole segment (122) is located between the first hole segment (121) and the through hole (11), and the first hole segment (121) is connected to the second hole segment (412). The aperture of the 21) is larger than that of the second hole segment (122) to form an annular step surface between the two. The outer wall of the annular boss (411) is in contact with the inner wall of the first hole segment (121). The outer wall of the anti-rotation block body (412) is in contact with the inner wall of the second hole segment (122). One side of the buffer pad (451) is in contact with the annular boss (411), and the other side of the buffer pad (451) is in contact with the annular step surface.

6. The arc-shaped splicing lock according to any one of claims 1 to 5, characterized in that, The base (10) has a through hole (11) through which the rotating member (20) is rotatably inserted. The arc splicing lock also includes a feedback spring (51) and a plurality of feedback teeth (52). The feedback spring (51) is disposed on the base (10) and extends into the through hole (11). The plurality of feedback teeth (52) are disposed on the outer side wall of the rotating member (20) along the circumference of the rotating member (20). The feedback spring (51) meshes with the feedback teeth (52).

7. The arc-shaped splicing lock according to any one of claims 1 to 5, characterized in that, The seat (10) has a through hole (11) and the rotating member (20) includes a knob (22) and a flange (23) connected to each other. The knob (22) is rotatably inserted through the through hole (11). The flange (23) is located outside the through hole (11). The contact surface (21) is provided on the end face of the flange (23) away from the through hole (11). The knob (22) is provided with a knob part (221) at one end away from the flange (23). The knob part (221) is located outside the through hole (11).

8. The arc-shaped splicing lock according to any one of claims 1 to 5, characterized in that, The first end face of the rotating member (20) is provided with a first contact surface (211), a second contact surface (212) and a third contact surface (213). The first contact surface (211), the second contact surface (212) and the third contact surface (213) are evenly distributed in the circumferential direction of the rotating member (20). The tilt angle of the first contact surface (211) is positive, the tilt angle of the second contact surface (212) is 0° and the tilt angle of the third contact surface (213) is negative.

9. An LED display screen, characterized in that, The LED display screen includes: At least two display screen units (61), each display screen unit (61) including a frame (611) and a display screen disposed on the frame (611); An arc splicing lock (62) is disposed between two adjacent display screen units (61). The base (10) of the arc splicing lock (62) is connected to the frame (611) of one of the two adjacent display screen units (61). The contact surface (21) of the arc splicing lock (62) abuts against the frame (611) of the other of the two adjacent display screen units (61). The arc splicing lock (62) is the arc splicing lock according to any one of claims 1 to 8.

Images