Fixing mechanism and LED display screen

Abstract

The utility model provides a fixing mechanism and an LED display screen, the LED display screen comprises a box body, an LED display module and the fixing mechanism, and the fixing mechanism is used for installing the LED display module on the box body. The fixing mechanism comprises a first fixing seat fixed to the box body, a through groove is formed in the first fixing seat, the two opposite ends, corresponding to the through groove, of the first fixing seat are provided with a first end face and a second end face, and the second end face is concaved inwards to form a clamping groove; the movable seat is arranged to be movably mounted on the LED display module, and the movable seat is provided with a clamping part capable of penetrating into the through groove from the first end face; the forward rotation movable seat can drive the clamping part to be clamped into the clamping groove from the through groove, and at the moment, the clamping groove can limit rotation of the clamping part; and the movable seat is reversely rotated to drive the clamping part to retreat from the clamping groove to the through groove. According to the fixing mechanism, the LED display module can be firmly installed on the box body, and operation is convenient.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and more specifically, relates to a fixing mechanism and an LED display screen. Background Art

[0002] LED display screen is a display screen used to display various information such as text, graphics, images, animations, market conditions, videos, and video signals. It mainly includes two major components: a cabinet and an LED display module. The LED display module is generally adsorbed on the cabinet through a magnetic structure. The LED display module can be installed, disassembled, and maintained without the use of additional tools, which can effectively ensure the convenience of disassembly and maintenance of the LED display screen; but it can be expected that the method of fixing the connection only by a magnetic structure is not completely reliable. When the LED display module is squeezed by a certain external force or subjected to high-frequency vibration, the LED display module may separate from the cabinet, causing the LED display module to fall off, thereby causing unnecessary losses. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a fixing mechanism and an LED display screen to solve the technical problem in the prior art that the LED display module and the box body are not firmly fixed.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a fixing mechanism for mounting the first structural member on the second structural member, the fixing mechanism comprising:

[0005] A first fixing seat, arranged to be fixed to the first structural member, the first fixing seat is formed with a through slot, the first fixing seat has a first end surface and a second end surface at opposite ends corresponding to the through slot, and the second end surface is concave to form a clamping slot;

[0006] A movable seat, arranged to be movably mounted on the second structural member, the movable seat being provided with a clamping portion capable of penetrating into the through groove from the first end surface;

[0007] The forward rotation of the movable seat can drive the engaging portion to engage in the engaging slot from the through slot, and at this time, the engaging slot can limit the rotation of the engaging portion; the reverse rotation of the movable seat can drive the engaging portion to withdraw from the engaging slot to the through slot.

[0008] In one embodiment, the card slot is cross-arranged with the through slot, and the card slot includes slot portions located on both sides of the through slot; in a locked state, the opposite ends of the clamping portion are respectively clamped into the two slot portions from the opposite ends of the through slot.

[0009] In one embodiment, along a length extension direction parallel to the slot, a width dimension of the slot portion gradually increases along a positive rotation direction.

[0010] In one embodiment, the fixing mechanism also includes a second fixing seat, which is configured to be fixed to the second structural member, the movable seat is passed through the second fixing seat and forms a rotational connection with the second fixing seat, and a limiting component is connected between the movable seat and the second fixing seat; when the clamping portion is clamped in the clamping slot, the limiting component limits the relative rotation of the movable seat and the second fixed seat, and the limiting component also limits the movement of the movable seat toward the first fixed seat.

[0011] In one embodiment, the limiting assembly includes a first limiting portion provided on the second fixed seat and a second limiting portion provided on the movable seat; when the clamping portion is clamped in the clamping slot, the first limiting portion abuts against the second limiting portion to limit the forward rotation of the movable seat and limit the movement of the movable seat toward the first fixed seat.

[0012] In one embodiment, the first limiting portion has a first inclined surface, and the second limiting portion has a second inclined surface, and the first inclined surface and the second inclined surface are both arranged at an acute angle or an obtuse angle with the axial direction; when the clamping portion is clamped in the clamping groove, the first inclined surface abuts against the second inclined surface, and the second limiting portion is located on the side of the first limiting portion away from the first fixing seat.

[0013] In one embodiment, the fixing mechanism also includes a torsion spring connected between the movable seat and the second fixed seat; when the clamping portion is clamped in the clamping slot, the torsion spring has an axial pulling force on the movable seat toward the first fixed seat, and the torsion spring has a reverse rotational force on the movable seat.

[0014] In one embodiment, the movable seat is provided with a plurality of the first limiting portions distributed in sequence along the circumferential direction, and the second fixed seat is provided with a plurality of the second limiting portions distributed in sequence along the circumferential direction; along the circumferential direction, the minimum distance between two adjacent second limiting portions is greater than the maximum circumferential dimension of the first limiting portion.

[0015] In one embodiment, the movable seat includes a fixedly connected latch and a rotating sleeve, the clamping portion is formed on the latch, and the rotating sleeve is fixedly sleeved on an end of the latch away from the clamping portion.

[0016] On the other hand, the present application also provides an LED display screen, including a box, an LED display module and the above-mentioned fixing mechanism, wherein the fixing mechanism is used to install the LED display module on the box.

[0017] The fixing mechanism and LED display screen provided by the present application have the following beneficial effects: it includes a first fixing seat and a movable seat, and the first fixing seat is fixed on the first structural member, and the movable seat is movably installed on the second structural member, and the clamping part in the movable seat can be inserted into the through slot of the first fixing seat, and the forward rotation of the movable seat can drive the clamping part to clamp into the clamping slot from the through slot, so that the first structural member can be installed on the second structural member; and the reverse rotation of the movable seat can drive the clamping part to withdraw from the clamping slot to the through slot, so that the first structural member can be removed from the second structural member. At the same time, when the clamping part is clamped into the clamping slot, the clamping slot can limit the rotation of the clamping part, thereby preventing the first structural member from being detached from the second structural member, thereby ensuring the reliability of the connection between the first structural member and the second structural member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an LED display screen provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a fixing mechanism provided in an embodiment of the present application at an angle;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the part in the middle;

[0022] Figure 4 A schematic diagram of the structure of the fixing mechanism provided in another angle in an embodiment of the present application;

[0023] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the local B in the middle;

[0024] Figure 6 A schematic axial cross-sectional view of the fixing mechanism provided in an embodiment of the present application in an unlocked state;

[0025] Figure 7 A schematic axial cross-sectional view of a fixing mechanism provided in an embodiment of the present application in a locked state;

[0026] Figure 8 A schematic diagram of the end face of the fixing mechanism provided in an embodiment of the present application in a locked state;

[0027] Fig. 9A schematic cross-sectional view of a locking state of a fixing mechanism provided in an embodiment of the present application, perpendicular to the axial direction;

[0028] Fig.10 A schematic diagram of the structure of a rotating sleeve in a fixing mechanism provided in an embodiment of the present application;

[0029] Fig.11 A schematic diagram of the structure of a second fixing seat in a fixing mechanism provided in an embodiment of the present application;

[0030] Fig.12 A schematic diagram of a locking state of a limiter assembly in a fixing mechanism provided in an embodiment of the present application;

[0031] Fig.13 A schematic diagram of an unlocked state of a limit assembly in a fixing mechanism provided in an embodiment of the present application;

[0032] Fig.14 A schematic diagram of the structure of a latch in a fixing mechanism provided in an embodiment of the present application.

[0033] Among them, the reference numerals in the figure are:

[0034] 1000, fixing mechanism; 100, first fixing seat; 110, through groove; 111, first end surface; 112, second end surface; 113, third arc surface; 120, slot; 121, slot portion; 1211, first abutting surface; 1212, second arc surface; 1213, entry side; 1214, stop side; 200, movable seat; 210, latch; 211, clamping portion; 2111, second abutting surface; 2112, first arc surface ; 212, convex ring; 2121, first mounting groove; 220, rotating sleeve; 300, second fixed seat; 310, second mounting groove; 400, torsion spring; 500, limiting assembly; 510, first limiting portion; 511, first inclined surface; 520, second limiting portion; 521, second inclined surface; 530, limiting space; 2000, first structural member; 3000, second structural member; Z1, first axial direction; Z2, second axial direction. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] See also Figure 1 , the fixing mechanism 1000 provided in the embodiment of the present application is now described. The fixing mechanism 1000 is used to install the first structural member 2000 on the second structural member 3000. In the present embodiment, the first structural member 2000 is an LED display module in an LED display screen, the second structural member 3000 is a box, and the fixing mechanism 1000 is used to install the LED display module on the box to prevent the LED display module from falling off the box due to separation from the box. It can be understood that in other embodiments of the present application, according to actual application conditions, the above-mentioned fixing mechanism 1000 can also be used in other places, such as for hanging a TV on a wall, or for installing an exterior wall on a wall base, which is not the only limitation here.

[0040] See also Figures 2 to 7 The fixing mechanism 1000 includes a first fixing seat 100 and a movable seat 200. The first fixing seat 100 is configured to be fixed to the first structural member 2000, and the first fixing seat 100 is formed with a through slot 110. The first fixing seat 100 has a first end face 111 and a second end face 112 at opposite ends corresponding to the through slot 110, and the second end face 112 is concave to form a clamping slot 120; the movable seat 200 is configured to be movably mounted on the second structural member 3000, and the movable seat 200 is provided with a clamping portion 211 that can penetrate the through slot 110 from the first end face 111; the forward rotation of the movable seat 200 can drive the clamping portion 211 to clamp into the clamping slot 120 from the through slot 110, and at this time, the clamping slot 120 can limit the rotation of the clamping portion 211; the reverse rotation of the movable seat 200 can drive the clamping portion 211 to withdraw from the clamping slot 120 to the through slot 110.

[0041] The first fixing base 100 may be an independent structure fixed on the first structural member 2000. Alternatively, the first fixing base 100 may also be a part of the first structural member 2000. For example, in this embodiment, the first fixing base 100 is a part of the housing of the LED display module.

[0042] The through slot 110 is disposed through the first fixed seat 100, the first end surface 111 is the end surface of the through slot 110 facing the second structural member 3000, and the second end surface 112 is the end surface of the through slot 110 facing away from the second structural member 3000. The clamping portion 211 on the movable seat 200 can be inserted into the through slot 110 from the first end surface 111 and clamped on the second end surface 112 of the through slot 110.

[0043] It should be noted that the forward and reverse directions referred to here do not have specific directions, and the forward and reverse directions are two opposite directions. When the movable seat 200 can be connected with the first fixed seat 100 after being rotated in one direction, the direction is the forward direction. Figure 5 and Figure 8 When the movable seat 200 is rotated in the other direction and can be unlocked and engaged with the second fixed seat 300, the other direction is the reverse direction, for example Figure 5 and Figure 8 Indicated by the reverse arrow in .

[0044] In addition, the movable seat 200 can be configured to have a certain angle of rotation in the positive direction before it can be snap-fitted with the first fixed seat 100, which can be set according to the actual structure; it can be that the movable seat 200 can be snap-fitted with the first fixed seat 100 by rotating a small angle after being inserted into the first fixed seat 100, or it can be that the movable seat 200 needs to be rotated a preset angle after being inserted into the first fixed seat 100 before it can be snap-fitted with the first fixed seat 100.

[0045] Similarly, the movable seat 200 can rotate in the reverse direction at a certain angle before it is unlocked and connected with the first fixed seat 100. This is generally based on the angle of the movable seat 200's forward rotation. When the movable seat 200 is connected with the first fixed seat 100 after rotating 10 degrees in the forward direction, the movable seat 200 can be unlocked and connected with the first fixed seat 100 after rotating 10 degrees in the reverse direction.

[0046] In addition, it should be noted that when the clamping portion 211 is inserted into the clamping slot 120, the clamping slot 120 can limit the rotation of the clamping portion 211, which means that when there is no external force or the external force is small, the clamping portion 211 cannot be separated from the clamping slot 120, thereby ensuring the reliability of the clamping. The clamping portion 211 can only be rotated out of the clamping slot 120 when the external force acting on the clamping portion 211 is greater than the preset rotational force. Among them, the magnitude of the preset rotational force is related to the degree of restriction of the clamping portion 211 by the clamping slot 120, and is generally set to be able to manually rotate the clamping portion 211 out.

[0047] When using the fixing mechanism 1000 to install the first structural member 2000 on the second structural member 3000, first fix the first fixed seat 100 on the first structural member 2000; then movably install the movable seat 200 on the second structural member 3000; then set the first fixed seat 100 close to the movable seat 200 so that the clamping part 211 on the movable seat 200 is inserted into the through groove 110 from the first end face 111; then rotate the movable seat 200 forward so that the clamping part 211 is clamped into the clamping slot 120 from the through groove 110, and at this time, the clamping slot 120 can limit the rotation of the clamping part 211 to ensure the reliability of the clamping.

[0048] When the first structural member 2000 and the second structural member 3000 need to be separated, the movable seat 200 only needs to be driven to rotate by a rotational force greater than a preset rotational force, so that the clamping portion 211 can be rotated from the clamping slot 120 to the through slot 110, thereby removing the clamping portion 211 from the through slot 110.

[0049] The fixing mechanism 1000 in the embodiment of the present application includes a first fixed seat 100 and a movable seat 200, and the first fixed seat 100 is fixed on the first structural member 2000, and the movable seat 200 is movably installed on the second structural member 3000, and the clamping portion 211 in the movable seat 200 can be inserted into the through groove 110 of the first fixed seat 100. The forward rotation of the movable seat 200 can drive the clamping portion 211 from the through groove 110 to the clamping slot 120, so that the first structural member 2000 can be installed on the second structural member 3000; and the reverse rotation of the movable seat 200 can drive the clamping portion 211 to withdraw from the clamping slot 120 to the through groove 110, so that the first structural member 2000 can be removed from the second structural member 3000. At the same time, when the engaging portion 211 is engaged with the engaging slot 120 , the engaging slot 120 can limit the rotation of the engaging portion 211 , thereby preventing the first structural member 2000 from being separated from the second structural member 3000 , thereby ensuring the connection reliability between the first structural member 2000 and the second structural member 3000 .

[0050] In addition, when the fixing mechanism 1000 of the present application is used in conjunction with the original magnetic structure to install the LED display module on the box, while ensuring the convenience of disassembly of the LED display module and the box, the reliability of the connection and fixation between the LED display module and the box can be fully improved.

[0051] In this example, see Figure 6 and Figure 7 The card slot 120 is a groove formed by the concave second end face 112. The surface of the card slot 120 parallel to the second end face 112 is set as the first abutting surface 1211, and the surface of the clamping portion 211 facing the second structural member 3000 is set as the second abutting surface 2111. In order to ensure that the clamping portion 211 can be clamped into the card slot 120 after being rotated forward by a preset angle in the through slot 110, it is necessary to ensure that the second abutting surface 2111 is located between the second end face 112 and the first abutting surface 1211 before the clamping portion 211 rotates forwardly, or it is necessary to ensure that the second abutting surface 2111 is coplanar with the first abutting surface 1211. With this arrangement, when the clamping portion 211 is rotated forward by a preset angle, the clamping portion 211 can be clamped into the card slot 120, and the second abutting surface 2111 of the clamping portion 211 abuts against the first abutting surface 1211 along the axial direction of the through slot 110.

[0052] In one embodiment, see Figure 5 and Figure 8 The card slot 120 is cross-arranged with the through slot 110 , and the card slot 120 includes slot portions 121 located on both sides of the through slot 110 ; in the locked state, the opposite ends of the clamping portion 211 are respectively clamped into the two slot portions 121 from the opposite ends of the through slot 110 .

[0053] Specifically, the clamping portion 211 is inserted into the through slot 110 before the forward rotation by a preset angle, and the clamping portion 211 is clamped in the clamping slot 120 after the forward rotation by a preset angle, so the clamping slot 120 is actually a blind slot formed after the through slot 110 rotates by a preset angle. The difference is that the through slot 110 is arranged to penetrate the first fixing seat 100, while the clamping slot 120 does not penetrate the first fixing seat 100. The portion between the two groove portions 121 of the clamping slot 120 is connected and shared with the through slot 110. When the opposite ends of the clamping portion 211 are respectively clamped into the two groove portions 121, the two groove portions 121 can rotationally limit the opposite ends of the clamping portion 211, and because the first abutting surface 1211 abuts against the second abutting surface 2111, the groove portion 121 also has an axial limiting effect on the clamping portion 211.

[0054] In one embodiment, see Figure 5 and Figure 8The cross section of the clamping portion 211 parallel to the first abutting surface 1211 is roughly rectangular, and the cross sections of the clamping slot 120 and the through slot 110 are both adapted to the cross section of the clamping portion 211. In addition, the outer contour surfaces at the opposite ends of the clamping portion 211 are respectively the first arc surface 2112, the first inner contour surfaces at the opposite ends of the clamping slot 120 are the second arc surface 1212, and the second inner contour surfaces at the opposite ends of the through slot 110 are the third arc surface 113. The rectangular setting facilitates the clamping and limiting of the clamping portion 211 in the clamping slot 120, and the setting of the first arc surface 2112, the second arc surface 1212 and the third arc surface 113 facilitates the rotational switching of the clamping portion 211 between the clamping slot 120 and the through slot 110.

[0055] In one embodiment, see Figure 5 and Figure 8 , along a length extension direction parallel to the card slot 120 , the width of the slot portion 121 gradually increases along the positive rotation direction.

[0056] The length extension direction of the card slot 120 refers to the extension direction of the two groove portions 121 of the card slot 120 , that is, the direction indicated by the arrow in the figure.

[0057] When the width of the groove portion 121 gradually increases along the positive rotation direction, see Figure 8 , it is assumed that along the positive rotation direction, the groove portion 121 has an entry side 1213 and a stop side 1214, the entry side 1213 refers to the side where the clamping portion 211 is clamped into the clamping slot 120 from the corresponding through slot 110, and the stop side 1214 refers to the side where the clamping portion 211 abuts after being rotated forward by a preset angle. The width of the groove portion 121 gradually increases from the entry side 1213 to the stop side 1214, wherein the smaller the width of the entry side 1213, the less difficult it is for the clamping portion 211 to be clamped into the clamping slot 120 from the through slot 110, and similarly, the less difficult it is for the clamping portion 211 to be detached from the clamping slot 120. The larger the width of the entry side 1213, the more difficult it is for the clamping portion 211 to be clamped into the clamping slot 120 from the through slot 110, and similarly, the more difficult it is for the clamping portion 211 to be detached from the clamping slot 120. Therefore, the width of the entry side 1213 needs to be reasonably set to ensure that when the user applies a preset rotational force to the movable seat 200, the clamping portion 211 can be clamped from the through slot 110 into the clamping slot 120, and the clamping portion 211 is not easily detached from the clamping slot 120.

[0058] In one embodiment, see Figure 6 and Figure 7The fixing mechanism 1000 also includes a second fixing seat 300, which is configured to be fixed to the second structural member 3000, the movable seat 200 is penetrated through the second fixing seat 300 and forms a rotational connection with the second fixing seat 300, and a limiting assembly 500 is connected between the movable seat 200 and the second fixing seat 300; when the clamping portion 211 is clamped in the clamping slot 120, the limiting assembly 500 limits the relative rotation of the movable seat 200 and the second fixing seat 300, and the limiting assembly 500 also limits the movable seat 200 from moving toward the first fixing seat 100.

[0059] It should be noted that the second fixing seat 300 can be a part of the second structural member 3000, for example, the second fixing seat 300 is a part of the box. Alternatively, the second fixing seat 300 can also be independently provided and fixed to the second structural member 3000 by welding, bonding, screw locking, etc.

[0060] In addition, the movable seat 200 is rotatably connected with the second fixed seat 300, so that the movable seat 200 can rotate relative to the second fixed seat 300 in the positive direction to engage with the first fixed seat 100 or rotate in the reverse direction to separate from the first fixed seat 100. The setting of the limiting assembly 500 ensures that when the engaging portion 211 is engaged in the slot 120, the movable seat 200 and the second fixed seat 300 will not rotate relative to each other. In addition, the limiting assembly 500 also limits the movable seat 200 from moving toward the first fixed seat 100, and the slot 120 is combined with the movable seat 200 to limit the movable seat 200 from moving away from the first fixed seat 100, thereby locking the movable seat 200 in the axial direction, ensuring the connection reliability between the first fixed seat 100 and the second fixed seat 300, and further ensuring the connection reliability between the box and the LED display module.

[0061] For ease of understanding, a first axial direction Z1 and a second axial direction Z2 are provided here. The directions of the first axial direction Z1 and the second axial direction Z2 are opposite. The first axial direction Z1 and the second axial direction Z2 are both axial directions of the second fixed axis. For details of the first axial direction Z1 and the second axial direction Z2, see Figure 6 and Figure 7 When the engaging portion 211 is engaged in the engaging groove 120 , the first abutting surface 1211 and the second abutting surface 2111 abut against each other, thereby limiting the engaging portion 211 and the movable seat 200 from moving along the first axial direction Z1 ; and the limiting assembly 500 limits the movable seat 200 from moving along the second axial direction Z2 , thereby forming an axial limit for the movable seat 200 .

[0062] In one embodiment, see Figure 7 , Figures 9 to 11, the limiting assembly 500 includes a first limiting portion 510 provided on the second fixed seat 300 and a second limiting portion 520 provided on the movable seat 200; when the clamping portion 211 is clamped in the clamping groove 120, the first limiting portion 510 and the second limiting portion 520 abut against each other to limit the forward rotation of the movable seat 200, and limit the movable seat 200 from moving toward the first fixed seat 100. In this embodiment, the abutment between the first limiting portion 510 and the second limiting portion 520 can limit the movement of the movable seat 200 in the axial direction and around the axial direction, and the structure is simple. It can be understood that in other embodiments, the movement restriction of the movable seat 200 in the axial direction and around the axial direction can also be achieved respectively by two different limiting combinations, which is not limited here.

[0063] In one embodiment, see Figures 10 to 13 The first limiting portion 510 has a first inclined surface 511, and the second limiting portion 520 has a second inclined surface 521. The first inclined surface 511 and the second inclined surface 521 are both set at an acute angle or an obtuse angle with the axial direction; in the locked state, the first inclined surface 511 abuts against the second inclined surface 521, and the second limiting portion 520 is located on the side of the first limiting portion 510 away from the first fixed seat 100.

[0064] Among them, the first inclined surface 511 and the second inclined surface 521 are both set at an acute angle or an obtuse angle with the axial direction, which means that the first inclined surface 511 is not perpendicular to the axial direction and is not parallel to the axial direction, and the second inclined surface 521 is not perpendicular to the axial direction and is not parallel to the axial direction. Such a setting enables, when the first inclined surface 511 and the second inclined surface 521 abut against each other, the first inclined surface 511 and the second inclined surface 521 have an axial force acting on each other, and also have a rotational force around the axial direction, thereby realizing the axial limitation and the rotational limitation of the movable seat 200 around the axial direction.

[0065] In one embodiment, see Figure 6 and Figure 7 The fixing mechanism 1000 also includes a torsion spring 400 connected between the movable seat 200 and the second fixed seat 300; when the clamping portion 211 is clamped in the clamping slot 120, the torsion spring 400 has an axial pulling force on the movable seat 200 toward the first fixed seat 100, and the torsion spring 400 has a reverse rotation force on the movable seat 200.

[0066] Specifically, from Fig.12It can be seen that when the clamping portion 211 is clamped in the clamping slot 120, the second limiting portion 520 abuts against the top of the first limiting portion 510. When the torsion spring 400 exerts an axial pulling force on the movable seat 200 toward the first fixed seat 100, that is, it has a force along the second axial direction Z2, the second limiting portion 520 can be kept abutting against the top of the first limiting portion 510, thereby ensuring the axial limitation and rotational limitation between the movable seat 200 and the second fixed seat 300, and further ensuring the connection reliability between the first fixed seat 100, the movable seat 200 and the second fixed seat 300.

[0067] In this embodiment, in order to ensure that the torsion spring 400 has a force on the movable seat 200 along the second axial direction Z2 in the locked state, the movable seat 200 needs to be moved along the first axial direction Z1 from the loosened state to the locked state, so that the torsion spring 400 is in a stretched state. This not only ensures that the second limiting portion 520 is tightly pressed against the first limiting portion 510, but also has a restoring force on the movable seat 200 along the second axial direction Z2 when unlocking, making the unlocking of the movable seat 200 convenient and labor-saving.

[0068] In one embodiment, see Figures 9 to 13 The movable seat 200 is provided with a plurality of first limiting portions 510 distributed in sequence along the circumferential direction, and the second fixed seat 300 is provided with a plurality of second limiting portions 520 distributed in sequence along the circumferential direction; along the circumferential direction, the minimum distance between two adjacent second limiting portions 520 is greater than the maximum circumferential dimension of the first limiting portion 510.

[0069] The provision of the plurality of first limiting portions 510 and the plurality of second limiting portions 520 can make the structural limiting between the movable seat 200 and the second fixed seat 300 evenly distributed along the circumferential direction, thereby ensuring the connection stability between the movable seat 200 and the second fixed seat 300.

[0070] In addition, a limiting space 530 is formed between two adjacent second limiting portions 520. Along the circumferential direction, the minimum circumferential dimension of the limiting space 530 is greater than the maximum circumferential dimension of the first limiting portion 510, so that the first limiting portion 510 can be inserted into the limiting space 530 along the second axial direction Z2.

[0071] In the initial state, the fixing mechanism 1000 of this embodiment is Figure 6 and Fig.12, the clamping portion 211 is arranged in the through groove 110, and the clamping portion 211 has a preset distance with the second abutting surface 2111, the torsion spring 400 is in a normal state, the first limiting portion 510 is located above the second limiting portion 520, and the first limiting portion 510 corresponds to the limiting space 530 between the two second limiting portions 520; during assembly, the movable seat 200 is first moved along the first axial direction Z1 by a preset distance, so that the first abutting surface 1211 of the clamping portion 211 and the second abutting surface 2 111 are arranged coplanarly, so that the torsion spring 400 has a force on the movable seat 200 along the second axial direction Z2, and the first limiting portion 510 moves to the limiting space 530; then the movable seat 200 is rotated in the forward direction by a preset angle, so that the clamping portion 211 is clamped into the clamping slot 120, the torsion spring 400 has a reverse rotation force on the movable seat 200, and the first inclined surface 511 of the first limiting portion 510 abuts against the second inclined surface 521 of the second limiting portion 520, thereby achieving locking. When unlocking is required, the movable seat 200 is first rotated in the opposite direction to a preset angle so that the clamping portion 211 rotates from the clamping slot 120 to the through slot 110. The torsion spring 400 has no rotational force but has axial force, and the first limiting portion 510 rotates out of the second limiting portion 520. At this time, the movable seat 200 moves along the second axial direction Z2 under the tension of the torsion spring 400, so that the first limiting portion 510 withdraws to the top of the limiting space 530, that is, returns to the initial position.

[0072] Among them, the torsion spring 400 can ensure that the first abutting surface 1211 and the second abutting surface 2111 are tightly abutted against each other in the locked state, ensuring a secure locking; when unlocking, it can drive the movable seat 200 to reset along the second axial direction Z2, making the unlocking operation simple.

[0073] In one embodiment, see Figure 7 and Fig.14 A convex ring 212 is formed on the outer peripheral wall of the movable seat 200, and a first mounting groove 2121 is formed on the convex ring 212. A second mounting groove 310 is formed on the inner wall of the second fixed seat 300. The first mounting groove 2121 and the second mounting groove 310 are arranged at intervals along the circumferential direction and the axial direction. The torsion spring 400 is sleeved on the movable seat 200, and the opposite ends of the torsion spring 400 are respectively installed in the first mounting groove 2121 and the second mounting groove 310.

[0074] In one embodiment, see Figure 6 and Figure 7The movable seat 200 includes a fixedly connected latch 210 and a rotating sleeve 220, a clamping portion 211 is formed on the latch 210, and the rotating sleeve 220 is fixedly sleeved on the end of the latch 210 away from the clamping portion 211. In this embodiment, since the clamping portion 211 and the convex ring 212 need to be formed on the latch 210, the second limiting portion 520 needs to be formed on the rotating sleeve 220, and the first limiting portion 510 needs to be formed on the second fixed seat 300, in order to form an axial sleeve connection between the latch 210 and the second fixed seat 300, the latch 210 and the rotating sleeve 220 are separately provided.

[0075] Optionally, the latch 210 and the rotating sleeve 220 may be fixedly connected by screw locking, interference fit connection, welding or bonding, etc. In other embodiments, if the structural design allows, the latch 210 and the rotating sleeve 220 may also be connected as one body, which is not the only limitation here.

[0076] On the other hand, the present application also provides an LED display screen, including a box, an LED display module and the above-mentioned fixing mechanism 1000, the LED display module is the first structural component 2000, the box is the second structural component 3000, and the fixing mechanism 1000 is used to install the LED display module on the box.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fixing mechanism for mounting a first structural member on a second structural member, characterized in that: The fixing mechanism comprises: A first fixing seat, arranged to be fixed to the first structural member, the first fixing seat is formed with a through slot, the first fixing seat has a first end surface and a second end surface at opposite ends corresponding to the through slot, and the second end surface is concave to form a clamping slot; A movable seat, arranged to be movably mounted on the second structural member, the movable seat being provided with a clamping portion capable of penetrating into the through groove from the first end surface; The forward rotation of the movable seat can drive the engaging portion to engage in the engaging slot from the through slot, and at this time, the engaging slot can limit the rotation of the engaging portion; the reverse rotation of the movable seat can drive the engaging portion to withdraw from the engaging slot to the through slot.

2. The fixing mechanism according to claim 1, characterized in that: The clamping slot is cross-arranged with the through slot, and the clamping slot includes slot portions located on both sides of the through slot; in a locked state, opposite ends of the clamping portion are respectively clamped into the two slot portions from opposite ends of the through slot.

3. The fixing mechanism according to claim 2, characterized in that: Along a length extension direction parallel to the card slot, a width dimension of the slot portion gradually increases along a positive rotation direction.

4. The fixing mechanism according to any one of claims 1 to 3, characterized in that: The fixing mechanism also includes a second fixing seat, which is configured to be fixed to the second structural member, the movable seat is inserted into the second fixing seat and forms a rotational connection with the second fixing seat, and a limiting component is connected between the movable seat and the second fixing seat; when the clamping portion is clamped in the clamping slot, the limiting component limits the relative rotation of the movable seat and the second fixing seat, and the limiting component also limits the movable seat from moving toward the first fixing seat.

5. The fixing mechanism according to claim 4, characterized in that: The limiting assembly includes a first limiting portion provided on the second fixed seat and a second limiting portion provided on the movable seat; when the clamping portion is clamped in the clamping slot, the first limiting portion abuts against the second limiting portion to limit the forward rotation of the movable seat and limit the movement of the movable seat toward the first fixed seat.

6. The fixing mechanism according to claim 5, characterized in that: The first limiting portion has a first inclined surface, and the second limiting portion has a second inclined surface, and the first inclined surface and the second inclined surface are both set at an acute angle or an obtuse angle with the axial direction; when the clamping portion is clamped in the clamping groove, the first inclined surface abuts against the second inclined surface, and the second limiting portion is located on the side of the first limiting portion away from the first fixing seat.

7. The fixing mechanism according to claim 5, characterized in that: The fixing mechanism also includes a torsion spring connected between the movable seat and the second fixed seat; when the clamping portion is clamped in the clamping slot, the torsion spring has an axial pulling force on the movable seat toward the first fixed seat, and the torsion spring has a reverse rotation force on the movable seat.

8. The fixing mechanism according to claim 5, characterized in that: The movable seat is provided with a plurality of first limiting portions distributed in sequence along the circumferential direction, and the second fixed seat is provided with a plurality of second limiting portions distributed in sequence along the circumferential direction; along the circumferential direction, the minimum distance between two adjacent second limiting portions is greater than the maximum circumferential dimension of the first limiting portion.

9. The fixing mechanism according to any one of claims 1 to 3, characterized in that: The movable seat comprises a fixedly connected latch and a rotating sleeve, the clamping portion is formed on the latch, and the rotating sleeve is fixedly sleeved on an end of the latch away from the clamping portion.

10. An LED display screen, characterized in that: It comprises a box, an LED display module and a fixing mechanism as described in any one of claims 1 to 9, wherein the fixing mechanism is used to install the LED display module on the box.

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