Mainboard fixing structure and display device

Abstract

The utility model discloses a mainboard fixing structure and a display device.The mainboard fixing structure is applied to the display device, the display device comprises a mainboard and a shell, the mainboard fixing structure comprises a fixing buckle which is arranged on one surface of the shell and comprises a first supporting part and a first clamping hook part, and the first clamping hook part is connected to the end, away from the shell, of the first supporting part; the surface, facing the shell, of the first clamping hook part is a first inclined plane; an included angle is formed between the first inclined plane and a horizontal plane parallel to the mainboard; the limiting column is arranged on one surface of the shell, the limiting column and the fixing buckle are arranged in a spaced mode, the height of the limiting column is smaller than that of the first supporting part in the longitudinal direction, and the first inclined face is used for obliquely inserting the main board and limiting the main board between the limiting column and the first clamping hook part. By means of the arrangement, screws are not needed, the mainboard can be fixedly assembled on the shell through the mainboard fixing structure, and the problems that in the prior art, when the mainboard is fixed through screws, a display device is prone to screw loosening, low in production efficiency and abnormal in product sound can be solved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a mainboard fixing structure and a display device. Background Art

[0002] Most of the motherboards of display devices on the market are installed by screws, which has low production efficiency. At the same time, when the middle shell of the assembled motherboard is made of plastic material, the screws are prone to stripping after repeated disassembly and assembly. Moreover, when the display device is turned off, due to the asynchronous high and low temperature contraction of the plastic middle shell and the motherboard material, after the display device is turned off, the plastic middle shell at the motherboard locking screw, the screw nut and the upper and lower surfaces of the motherboard are prone to relative sliding, resulting in abnormal noise of the product. Utility Model Content

[0003] The present application mainly provides a mainboard fixing structure and a display device to solve the problems in the prior art that when the display device uses screws to fix the mainboard, the screws are easy to slip, the production efficiency is low, and the product makes abnormal noises.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a mainboard fixing structure, applied to a display device, the display device includes a mainboard and a housing, the mainboard fixing structure includes:

[0005] A fixing buckle is provided on a surface of the housing, comprising a first supporting portion and a first hook portion, wherein the first hook portion is connected to an end of the first supporting portion away from the housing, and a surface of the first hook portion facing the housing is a first inclined surface, and an angle is formed between the first inclined surface and a horizontal plane parallel to the mainboard;

[0006] A limiting column is provided on a surface of the housing and is spaced apart from the fixing buckle; along the longitudinal direction, the height of the limiting column is less than the height of the first supporting portion;

[0007] Wherein, the first inclined surface is used to obliquely insert the mainboard and limit it between the limiting column and the first hook portion.

[0008] In one embodiment, the mainboard fixing structure further includes:

[0009] A stepped column pin is arranged on a surface of the shell and is spaced apart from the fixing buckle and the limiting column. An end of the stepped column pin away from the shell is used to be embedded in the first positioning hole of the mainboard.

[0010] In one embodiment, the mainboard fixing structure further includes:

[0011] A diamond pin is arranged on a surface of the shell, along the first direction, located on the side of the fixing buckle close to the stepped column pin; the end of the diamond pin away from the shell is used to pass through the second positioning hole of the main board, and along the first direction, there is a gap between the side of the diamond pin and the side wall of the second positioning hole.

[0012] In one embodiment, the mainboard fixing structure further includes:

[0013] An elastic clip is arranged on a surface of the shell, along the first direction, and is spaced apart from the fixed clip on one side; the elastic clip includes a second supporting portion and a second hook portion, the second hook portion is connected to an end of the second supporting portion away from the shell; the surface of the second supporting portion facing the fixed clip is a plane, and the mainboard is arranged between the second supporting portion and the first supporting portion.

[0014] In one embodiment, the surface of the second hook portion facing the shell is a second inclined surface, and an angle is formed between the second inclined surface and a horizontal plane parallel to the main board; the second hook portion is used to limit the main board between the limiting column and the second inclined surface.

[0015] In one embodiment, the angle between the first inclined surface and a horizontal plane parallel to the main board is 8-15 degrees; and / or,

[0016] The included angle between the second inclined surface and a horizontal plane parallel to the main board is 8-15 degrees.

[0017] In one embodiment, the fixing buckle further includes a first reinforcing rib, the first reinforcing rib is connected to the surface of the first supporting portion and the first hook portion away from the elastic buckle, and is located at the center of the surface; and / or,

[0018] The elastic buckle further includes a second reinforcing rib connected to the second supporting portion and a surface of the second hook portion away from the fixing buckle.

[0019] In one embodiment, the first supporting portion is used to be clamped in the U-shaped groove of the mainboard, and a chamfer is provided at a corner of a side surface of the first supporting portion.

[0020] In one embodiment, the mainboard fixing structure includes at least two positioning columns that are spaced apart from each other, and the at least two positioning columns are used to be inserted into at least two third positioning holes of the mainboard in a one-to-one correspondence.

[0021] In order to solve the above technical problems, another technical solution adopted by the present application is: to provide a display device, comprising:

[0022] case;

[0023] Motherboard;

[0024] The mainboard fixing structure is any mainboard fixing structure as described above, and the mainboard fixing structure fixes and assembles the mainboard on the housing.

[0025] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a mainboard fixing structure and a display device, the mainboard fixing structure is applied to the display device, the display device includes a mainboard and a shell, the mainboard fixing structure includes: a fixing buckle, which is arranged on a surface of the shell, including a first support portion and a first hook portion, the first hook portion is connected to an end of the first support portion away from the shell, the surface of the first hook portion facing the shell is a first inclined surface, and there is an angle between the first inclined surface and the horizontal plane parallel to the mainboard; a limiting column, which is arranged on a surface of the shell, and is spaced from the fixing buckle, and along the longitudinal direction, the height of the limiting column is less than the height of the first support portion, and the first inclined surface is used to obliquely insert the mainboard and limit it between the limiting column and the first hook portion. Through the above arrangement, the mainboard can be fixedly assembled on the shell by the mainboard fixing structure without using screws, which can solve the problems of easy slipping, low production efficiency, and abnormal sound of the product when the display device uses screws to fix the mainboard in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0027] Figure 1 is a structural schematic diagram of an embodiment of a display device provided by the present application;

[0028] Figure 2 yes Figure 1 A schematic structural diagram of a housing of a display device is provided;

[0029] Figure 3 yes Figure 1 A partial enlarged schematic diagram of a mainboard fixing structure of a display device provided;

[0030] Figure 4 yes Figure 3 A schematic diagram of the structure of the fixing buckle of the mainboard fixing structure provided;

[0031] Figure 5 yes Figure 3 A schematic diagram of the structure of the elastic buckle of the mainboard fixing structure provided;

[0032] Figure 6 yes Figure 3 A schematic diagram of the structure of the stepped pins of the mainboard fixing structure provided;

[0033] Figure 7 yes Figure 3 A schematic diagram of the structure of the diamond pins of the mainboard fixing structure provided;

[0034] Figure 8 yes Figure 1 A schematic structural diagram of a mainboard of a display device is provided.

[0035] Figure Number:

[0036] Display device 300; main board 1; U-shaped groove 11; first positioning hole 12; second positioning hole 13; third positioning hole 14; shell 2; main board fixing structure 3; fixing buckle 31; first supporting portion 311; first hook portion 312; first inclined surface 313; first reinforcing rib 314; limiting column 32; elastic buckle 33; second supporting portion 331; second hook portion 332; second inclined surface 333; second reinforcing rib 334; stepped column pin 34; diamond pin 35; positioning column 36. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] See also Figures 1 to 8 , Figure 1 is a schematic structural diagram of an embodiment of a display device provided by the present application, Figure 2 yes Figure 1 A schematic diagram of the structure of a housing of a display device is provided, Figure 3 yes Figure 1 A partial enlarged schematic diagram of a mainboard fixing structure of a display device is provided, Figure 4 yes Figure 3 A schematic diagram of the structure of the fixing buckle of the mainboard fixing structure provided, Figure 5 yes Figure 3 A schematic diagram of the structure of the elastic buckle of the mainboard fixing structure provided, Figure 6 yes Figure 3 The schematic diagram of the structure of the stepped pins of the mainboard fixing structure provided, Figure 7 yes Figure 3 The schematic diagram of the structure of the diamond pins of the mainboard fixing structure provided, Figure 8 yes Figure 1 A schematic structural diagram of a mainboard of a display device is provided.

[0041] See also Figure 1 The present application provides a display device 300, which may be a television or other display device, for example, an LCD television or an LCD monitor or an all-in-one computer product.

[0042] The display device 300 includes a mainboard 1, a shell 2 and a mainboard fixing structure 3, wherein the mainboard 1 is in a plate shape, the shell 2 can be made of materials such as plastic, and the mainboard fixing structure 3 fixes the mainboard 1 on the shell 2 to achieve connection and fixation between the mainboard 1 and the shell 2.

[0043] See also Figure 2 and Figure 3 The mainboard fixing structure 3 is arranged on the shell 2. Specifically, the mainboard fixing structure 3 includes a fixing buckle 31 and a limiting column 32. The fixing buckle 31 and the limiting column 32 are both arranged on the same surface of the shell 2, specifically, on the surface of the shell 2 facing the mainboard 1.

[0044] like Figure 4As shown, the fixing buckle 31 includes a first supporting portion 311 and a first hook portion 312 connected to each other, the first hook portion 312 is connected to one end of the first supporting portion 311 away from the housing 2, the surface of the first hook portion 312 facing the housing 2 is a first inclined surface 313, and there is an angle A between the first inclined surface 313 and a horizontal plane parallel to the mainboard 1, and the angle A is a first angle, that is, the first inclined surface 313 is arranged to be inclined to the horizontal plane, that is, the first inclined surface 313 is arranged to be inclined to the mainboard 1. Among them, the first supporting portion 311 extends in the longitudinal direction, and the longitudinal direction is a direction perpendicular to the horizontal plane. In the direction parallel to the horizontal plane, one end of the first hook portion 312 protrudes from the first supporting portion 311 to facilitate the longitudinal positioning of the mainboard 1, and the height of the first inclined surface 313 gradually increases from the end of the first inclined surface 313 close to the first supporting portion 311 to the end away from the first supporting portion 311.

[0045] The limiting column 32 is arranged at intervals from the fixing buckle 31. In the longitudinal direction, the height of the limiting column 32 is less than the height of the first support portion 311. Specifically, the limiting column 32 also extends in the longitudinal direction. The shape of the limiting column 32 can be cylindrical, or truncated, or any other shape. The main board 1 is obliquely inserted between the first inclined surface 313 of the first hook portion 312 and the limiting column 32, and after being installed in place, it is limited by the first inclined surface 313 and the limiting column 32 between the limiting column 32 and the first hook portion 312, thereby realizing the longitudinal limitation of the main board 1, that is, the thickness of the main board 1 is less than or equal to the longitudinal spacing between the first hook portion 312 and the limiting column 32. In a specific embodiment, after the main board 1 is installed in place, along the longitudinal direction, the top surface of the main board 1 abuts against the first inclined surface 313 of the first hook portion 312, and the bottom surface of the main board 1 abuts against the top surface of the limiting column 32, thereby realizing the longitudinal limitation of the main board 1.

[0046] When the mainboard 1 is installed in the housing 2, the fixing buckle 31 will not be deformed. Specifically, the first hook portion 312 and the first support portion 311 of the fixing buckle 31 will not be elastically deformed, and the fixing buckle 31 can be made of a rigid material. The first support portion 311 of the fixing buckle 31 can also limit the mainboard 1 in the horizontal direction.

[0047] It can be understood that due to the provision of the limiting column 32 and the first hook portion 312, the main board 1 needs to be assembled and limited between the limiting column 32 and the first hook portion 312 to achieve longitudinal limitation. The present application sets the surface of the first hook portion 312 facing the shell 2 as a first inclined surface 313 inclined to the horizontal plane. When the main board 1 is installed in the shell 2, it can be ensured that the main board 1 is smoothly obliquely inserted between the limiting column 32 and the first hook portion 312 through the first inclined surface 313, thereby avoiding deformation of the fixing buckle 31 and ensuring that the main board 1 is installed in place. After the main board 1 is installed in place, the main board 1 is set parallel to the horizontal plane, thereby better realizing the limitation of the main board 1 by the main board fixing structure 3. By providing the mainboard fixing structure 3, it is no longer necessary to fix the mainboard 1 to the shell 2 by screws, thereby achieving quick installation of the mainboard 1 without screws, improving the production efficiency of the display device 300, and at the same time, avoiding the problem of the mainboard 1 being loosely fixed due to the loss of screws during product maintenance, saving the production cost of the screws, and at the same time, avoiding the problem of abnormal noise caused by the two different materials of the screws and the shell 2 expanding or contracting in a non-uniform manner during the heating and cooling process of the display device 300 when the mainboard 1 and the shell 2 are fixed with screws.

[0048] Specifically, the angle A between the first inclined surface 313 of the first hook portion 312 and the horizontal plane parallel to the mainboard 1 is an acute angle. Preferably, the angle A between the first inclined surface 313 and the horizontal plane parallel to the mainboard 1 is 8-15 degrees. More preferably, the angle A between the first inclined surface 313 and the horizontal plane parallel to the mainboard 1 is 10 degrees. By setting the angle A between the first inclined surface 313 and the horizontal plane parallel to the mainboard 1 within the above range, it can be ensured that the mainboard 1 is smoothly inserted obliquely between the first inclined surface 313 and the limiting column 32 through the first inclined surface 313, and it can also be ensured that after the mainboard 1 is installed in place, the first inclined surface 313 and the limiting column 32 have a longitudinal limiting effect on the mainboard 1, so as to better prevent the mainboard 1 from moving in the longitudinal direction.

[0049] See also Figure 1 and Figure 3 In one embodiment, the mainboard fixing structure 3 further includes an elastic buckle 33, which is disposed on a surface of the housing 2. Specifically, along a first direction, the elastic buckle 33 is spaced apart and located on one side of the fixing buckle 31. The first direction is parallel to the horizontal plane. Specifically, the first direction is a horizontal direction. Figure 5 As shown, the elastic buckle 33 includes a second support portion 331 and a second hook portion 332 connected to each other, and the second hook portion 332 is connected to one end of the second support portion 331 away from the shell 2. Specifically, the second support portion 331 extends longitudinally, and along a direction parallel to the horizontal plane, one end of the second hook portion 332 protrudes from the second support portion 331 to facilitate longitudinal limitation of the mainboard 1.

[0050] The surface of the second support portion 331 of the elastic buckle 33 facing the fixed buckle 31 is a plane, and along the first direction, the mainboard 1 is clamped between the second support portion 331 and the first support portion 311. Specifically, in one embodiment, after the mainboard 1 is installed in place, along the first direction, one side surface of the mainboard 1 abuts against the surface of the second support portion 331 facing the fixed buckle 31, and the other side surface of the mainboard 1 abuts against the surface of the first support portion 311 facing the elastic buckle 33, thereby realizing the horizontal limitation of the mainboard 1. It can be understood that the elastic buckle 33 is an elastic structure, and when the mainboard 1 is installed on the housing 2, the elastic buckle 33 can be deformed, so that the mainboard 1 can be more smoothly installed between the elastic buckle 33 and the fixed buckle 31, ensuring that the mainboard 1 is installed in place.

[0051] In a specific embodiment, Figure 5 As shown, the surface of the second hook portion 332 of the elastic buckle 33 facing the housing 2 is a second inclined surface 333, and an angle B is formed between the second inclined surface 333 and a horizontal plane parallel to the mainboard 1, and the angle B is a second angle. The second hook portion 332 limits the mainboard 1 between the limiting column 32 and the second inclined surface 333, thereby achieving longitudinal limitation of the left side of the mainboard 1. Providing the second inclined surface 333 on the second hook portion 332 can also facilitate the installation of the mainboard 1 and ensure that the mainboard 1 is installed in place.

[0052] The angle B between the second bevel 333 and the horizontal plane parallel to the mainboard 1 is an acute angle. Preferably, the angle B between the second bevel 333 and the horizontal plane parallel to the mainboard 1 is 8-15 degrees. More preferably, the angle B between the first bevel 313 and the horizontal plane parallel to the mainboard 1 is 10 degrees. Similarly, the angle range and specific technical effects of the angle B between the second bevel 333 and the horizontal plane parallel to the mainboard 1 are the same as those of the angle A between the first bevel 313 and the horizontal plane parallel to the mainboard 1, and are not repeated here. In other embodiments, the surface of the second hook portion 332 of the elastic buckle 33 facing the shell 2 can also be set to a plane to better limit the mainboard 1 between the second hook portion 332 and the limiting column 32.

[0053] See also Figure 1 , Figure 3 and Figure 8 In one embodiment, an edge of the mainboard 1 has a U-shaped groove 11, and the first support portion 311 of the fixing buckle 31 is clamped in the U-shaped groove 11 of the mainboard 1. The surface of the first support portion 311 close to the mainboard 1 abuts against the bottom wall of the U-shaped groove 11, so that the first support portion 311 limits the horizontal movement of the mainboard 1.

[0054] In a specific embodiment, a chamfer is provided at the corner of the side of the first support portion 311, and / or a chamfer is provided at the corner of the side wall of the U-shaped groove 11. The chamfer can be used for guiding, and the chamfer can be a rounded corner, or it can also be an oblique angle, which makes it easier for the first support portion 311 to be smoothly inserted into the U-shaped groove 11 of the mainboard 1. At the same time, the U-shaped groove 11 of the mainboard 1 can also be avoided to ensure that the mainboard 1 is installed in place.

[0055] See also Figure 4 In one embodiment, the fixing buckle 31 further includes a first reinforcing rib 314, which is connected to the first support portion 311 and the first hook portion 312. Specifically, the first reinforcing rib 314 is connected to the surface of the first support portion 311 and the first hook portion 312 away from the elastic buckle 33 and is located at the center of the surface. The first reinforcing rib 314 can extend in the longitudinal direction. By providing the first reinforcing rib 314 on the fixing buckle 31, the structural strength of the fixing buckle 31 can be improved, and the fixing buckle 31 can be better prevented from being deformed, which provides a guarantee for the mainboard 1 to be firmly fixed on the housing 2; at the same time, by connecting the first reinforcing rib 314 to the center of the surface of the first support portion 311 and the first hook portion 312 away from the elastic buckle 33, while ensuring the structural strength of the fixing buckle 31, the size of the fixing buckle 31 in the second direction, i.e., the vertical direction, is made smaller. The size of the fixing buckle 31 is reduced, and the size of the U-shaped groove 11 on the corresponding mainboard 1 in the second direction can also be smaller, which is more conducive to reducing the overall size of the mainboard 1 and saving costs. The first reinforcing rib 314 may be fixedly connected to the fixing buckle 31 , or may be integrally formed with the fixing buckle 31 .

[0056] In other embodiments, the first reinforcing rib 314 may also be provided at other positions of the fixing buckle 31. For example, the first reinforcing rib 314 may be provided at an edge position of the surface of the first supporting portion 311 and the first hook portion 312 that is away from the elastic buckle 33. The number of the first reinforcing rib 314 may be provided at one, or at any number such as two or three, as long as the structural strength of the fixing buckle 31 can be enhanced. Alternatively, the fixing buckle 31 may not be provided with the first reinforcing rib 314, and may be designed as needed.

[0057] See also Figure 5In one embodiment, the elastic buckle 33 further includes a second reinforcing rib 334, and the second reinforcing rib 334 is connected to the second support portion 331 and the second hook portion 332. Specifically, the second reinforcing rib 334 is connected to the surface of the second support portion 331 and the second hook portion 332 away from the fixed buckle 31, and the second reinforcing rib 334 can extend in the longitudinal direction. In a specific embodiment, the second reinforcing rib 334 is connected to the edge position of the surface of the second support portion 331 and the second hook portion 332 away from the fixed buckle 31, such as Figure 5 As shown, the elastic buckle 33 includes two second reinforcing ribs 334, which are arranged at intervals along the second direction, i.e., the vertical direction, and are arranged one by one corresponding to the two opposite sides of the surface of the elastic buckle 33 away from the fixed buckle 31. By arranging the second reinforcing ribs 334 on the elastic buckle 33, the structural strength of the elastic buckle 33 can be improved, ensuring that the elastic buckle 33 has sufficient elasticity and strength, and better positioning of the mainboard 1 can be achieved. Among them, the second reinforcing ribs 334 can be fixedly connected to the elastic buckle 33, and can also be integrally formed with the elastic buckle 33.

[0058] In other embodiments, the second reinforcing rib 334 may also be provided at other positions of the elastic buckle 33. For example, the second reinforcing rib 334 may be connected to any one or both of the two side surfaces of the second support portion 331 and the second hook portion 332 that are relatively arranged along the second direction; or, the second reinforcing rib 334 may also be connected to the center position of the surface of the second support portion 331 and the second hook portion 332 that is away from the fixed buckle 31. The number of the second reinforcing ribs 334 may also be set to any number such as one or three; or, the elastic buckle 33 may not be provided with the second reinforcing rib 334 and may be designed as needed.

[0059] It can be understood that in the first direction, i.e., the horizontal direction, the elastic buckle 33 and the fixed buckle 31 are respectively arranged on opposite sides of the mainboard 1, and the opposite sides of the mainboard 1 can be horizontally limited by the second support portion 331 of the elastic buckle 33 and the first support portion 311 of the fixed buckle 31. Along the horizontal direction, the left side of the mainboard 1 is longitudinally limited by the second hook portion 332 of the elastic buckle 33 and the limiting column 32, and the right side is longitudinally limited by the first hook portion 312 of the fixed buckle 31 and the limiting column 32, so that the mainboard 1 can be installed and limited on the housing 2 more stably.

[0060] The preparation of the fixed buckle 31 or the elastic buckle 33 can be in the form of front and rear mold collision. The mold structure for preparing the fixed buckle 31 or the elastic buckle 33 is simple, has a long service life, and is easy to maintain. The number of the fixed buckle 31 or the elastic buckle 33 can be set to any number such as one, two, three, five, etc. When the fixed buckle 31 or the elastic buckle 33 is set to multiple, multiple fixed buckles 31 are arranged at intervals along the second direction, and multiple elastic buckles 33 are arranged at intervals along the second direction. The second direction is parallel to the horizontal plane. Specifically, the second direction is the vertical direction, and the horizontal direction and the vertical direction are perpendicular to each other and are both perpendicular to the longitudinal direction. Specifically, multiple fixed buckles 31 can be evenly spaced in the vertical direction, and multiple elastic buckles 33 can also be evenly spaced in the vertical direction to ensure the uniformity of the limit of the mainboard 1, so that the mainboard 1 can be more stably limited and assembled on the shell 2.

[0061] In one embodiment, see Figure 1 , Figure 3 , Figure 6 and Figure 8 , the mainboard fixing structure 3 also includes a stepped pin 34, which is arranged on a surface of the shell 2 and is spaced apart from the fixing buckle 31 and the limiting column 32. A first positioning hole 12 is arranged on the mainboard 1, and one end of the stepped pin 34 away from the shell 2 is embedded in the first positioning hole 12 of the mainboard 1. By arranging the stepped pin 34 on the shell 2 and inserting the end of the stepped pin 34 away from the shell 2 into the first positioning hole 12 of the mainboard 1, the stepped pin 34 can simultaneously realize the precise positioning of the mainboard 1 in the first direction, i.e., the horizontal direction, and the second direction, i.e., the vertical direction. Specifically, the first positioning hole 12 is a round hole, and the stepped pin 34 is in the shape of a stepped cylinder.

[0062] It can be understood that by arranging the stepped pin 34 on the shell 2, it can be ensured that after the right side of the mainboard 1 is obliquely inserted between the first inclined surface 313 of the first hook portion 312 of the fixing buckle 31 and the limiting column 32, the first positioning hole 12 of the mainboard 1 can be smoothly introduced into the position of the stepped pin 34 on the shell 2 in a counterclockwise direction, so that the end of the stepped pin 34 away from the shell 2 is inserted into the first positioning hole 12, thereby making it easier to install the mainboard 1 and limit the horizontal and vertical directions in the horizontal plane, thereby ensuring the assembly effect of the mainboard 1.

[0063] Further, a chamfer is provided at one end of the step pin 34 away from the housing 2, and the chamfer can be a rounded angle or an oblique angle. By providing the chamfer, it is easier to insert the step pin 34 into the first positioning hole 12 of the mainboard 1, ensuring that the mainboard 1 is installed in place. The number of the step pins 34 can be set to one or more, and the multiple step pins 34 can be evenly distributed on the housing 2 or randomly distributed. When the step pin 34 is set to one, the production cost can be saved, and the assembly efficiency of the mainboard 1 is higher.

[0064] In one embodiment, see Figure 1 , Figure 3 , Figure 7 and Figure 8 The mainboard fixing structure 3 also includes a diamond pin 35, which is arranged on a surface of the housing 2, and along the first direction, i.e., the horizontal direction, the diamond pin 35 is located on the side of the fixing buckle 31 close to the step pin 34, i.e., the diamond pin 35 is arranged close to the fixing buckle 31, and the step pin 34 is arranged close to the elastic buckle 33. A second positioning hole 13 is also arranged on the mainboard 1, and the end of the diamond pin 35 away from the housing 2 is used to penetrate into the second positioning hole 13 of the mainboard 1, and along the first direction, the side of the diamond pin 35 is spaced from the side wall of the second positioning hole 13, i.e., in the horizontal direction, there is a gap between the left and right sides of the diamond pin 35 and the side wall of the second positioning hole 13 of the mainboard 1, and in the vertical direction, the upper and lower sides of the diamond pin 35 are in contact with the side wall of the second positioning hole 13 of the mainboard 1. Specifically, the second positioning hole 13 is a round hole, and the cross section of the diamond pin 35 is hexagonal.

[0065] It can be understood that by providing a diamond pin 35 instead of a cylindrical pin on the shell 2, the problem that when the mainboard 1 is obliquely inserted between the first hook portion 312 and the limiting column 32, there is no gap between the left and right sides of the cylindrical pin and the side walls of the second positioning hole 13 of the mainboard 1, and the cylindrical pin cannot be inserted into the second positioning hole 13. The design of the diamond pin 35 allows a gap between the left and right sides of the diamond pin 35 and the side walls of the second positioning hole 13 of the mainboard 1, ensuring that the second positioning hole 13 of the mainboard 1 can be smoothly sleeved on the diamond pin 35, thereby avoiding the problem that the mainboard 1 cannot be installed in place; at the same time, it can also avoid the problem that the mainboard 1 cannot be assembled to the shell 2 when there is a deviation between the distance between the first positioning hole 12 and the second positioning hole 13 on the mainboard 1 and the stepped column pin 34 and the cylindrical pin on the shell 2; at the same time, the use of the diamond pin 35 also ensures that when the display device 300 is working or stored in different temperature environments, the mainboard 1 will not be bent and deformed due to the different contraction states of the two different materials, resulting in the falling off of components, thereby causing the product to fail.

[0066] The number of the diamond pins 35 can be one or more. When the diamond pins 35 are multiple, they can be evenly distributed or randomly distributed on the housing 2. When the diamond pins 35 are one, the production cost can be saved and the assembly efficiency of the mainboard 1 is higher.

[0067] By simultaneously providing a stepped pin 34 and a diamond pin 35 on the shell 2, it is possible to ensure that the mainboard 1 is installed more smoothly, and to achieve precise positioning of the mainboard 1 in the horizontal and vertical directions, thereby ensuring the assembly effect of the mainboard 1 and the shell 2 and improving the performance of the display device 300.

[0068] In other embodiments, the mainboard fixing structure 3 may also only have a fixing buckle 31 and a stepped pin 34, or only have a fixing buckle 31 and a diamond pin 35, or only have a stepped pin 34 and a diamond pin 35, or only have a fixing buckle 31 and a limiting column 32, that is, it may include any two or more of the above-mentioned fixing buckles 31, limiting columns 32, elastic buckles 33, stepped pins 34 and diamond pins 35. The present application does not impose any limitation on this, as long as it can ensure that the mainboard 1 can be smoothly inserted obliquely and fixedly assembled and limited on the shell 2.

[0069] In one embodiment, see Figure 1 and Figure 8 , at least two third positioning holes 14 are also provided on the mainboard 1, and the mainboard fixing structure 3 also includes at least two positioning columns 36 which are provided on the surface of the housing 2 facing the mainboard 1. At least two positioning columns 36 are provided in a one-to-one correspondence in at least two third positioning holes 14 of the mainboard 1 to achieve the positioning of the mainboard 1. It can be understood that by providing the positioning columns 36 on the housing 2 and the third positioning holes 14 on the mainboard 1, the third positioning holes 14 can be spare holes. When the elastic buckle 33 or the fixed buckle 31 of the mainboard fixing structure 3 is accidentally broken or damaged, the positioning columns 36 can cooperate with the third positioning holes 14 to fix and assemble the mainboard 1 and limit it on the housing 2, so as to ensure that the mainboard 1 is assembled in place, realize the spare locking function, and avoid the problem that the mainboard 1 cannot be fixed or positioned after the elastic buckle 33 and the fixed buckle 31 of the mainboard fixing structure 3 are damaged.

[0070] Specifically, the third positioning hole 14 is a circular hole, and the positioning column 36 can be truncated cone-shaped. The diameter of the positioning column 36 gradually decreases from the end of the positioning column 36 close to the shell 2 to the end away from the shell 2. The end of the positioning column 36 away from the shell 2 is inserted into the third positioning hole 14 of the mainboard 1 to achieve the positioning of the mainboard 1.

[0071] In a specific embodiment, the positioning column 36 may not be set on the shell 2, and the limiting column 32 can be directly set to a truncated cone shape, that is, the limiting column 32 also serves as the positioning column 36. After the mainboard 1 is installed in place, the third positioning hole 14 of the mainboard 1 corresponds to the position setting of the limiting column 32, and the end of the limiting column 32 away from the shell 2 is inserted into the third positioning hole 14, so that the limiting column 32 simultaneously realizes the limitation of the mainboard 1 in the longitudinal direction, horizontal direction and vertical direction.

[0072] In other embodiments, the positioning column 36 may be set to other shapes, and the third positioning hole 14 may be set to other shapes corresponding to the positioning column 36, as long as the positioning column 36 and the third positioning hole 14 can cooperate to realize the backup locking function of the mainboard 1.

[0073] In other embodiments, the display device 300 may also be provided with screws, by which the mainboard 1 and the shell 2 may be fixedly assembled, and the screw fixation may be used as a backup solution, so that when the elastic buckle 33 or the fixing buckle 31 of the above-mentioned mainboard fixing structure 3 is damaged or accidentally broken, the mainboard 1 may be locked by the screws.

[0074] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A mainboard fixing structure, applied to a display device, the display device comprising a mainboard and a housing, characterized in that: The mainboard fixing structure comprises: A fixing buckle is provided on a surface of the housing, comprising a first supporting portion and a first hook portion, wherein the first hook portion is connected to an end of the first supporting portion away from the housing, and a surface of the first hook portion facing the housing is a first inclined surface, and an angle is formed between the first inclined surface and a horizontal plane parallel to the mainboard; A limiting column is provided on a surface of the housing and is spaced apart from the fixing buckle; along the longitudinal direction, the height of the limiting column is less than the height of the first supporting portion; Wherein, the first inclined surface is used to obliquely insert the mainboard and limit it between the limiting column and the first hook portion.

2. The mainboard fixing structure according to claim 1, characterized in that: The mainboard fixing structure also includes: A stepped column pin is arranged on a surface of the shell and is spaced apart from the fixing buckle and the limiting column. An end of the stepped column pin away from the shell is used to be embedded in the first positioning hole of the mainboard.

3. The mainboard fixing structure according to claim 2, characterized in that: The mainboard fixing structure also includes: A diamond pin is arranged on a surface of the shell, along the first direction, located on the side of the fixing buckle close to the stepped column pin; the end of the diamond pin away from the shell is used to pass through the second positioning hole of the main board, and along the first direction, there is a gap between the side of the diamond pin and the side wall of the second positioning hole.

4. The mainboard fixing structure according to claim 1, characterized in that: The mainboard fixing structure also includes: An elastic clip is arranged on a surface of the shell, along the first direction, and is spaced apart from the fixed clip on one side; the elastic clip includes a second supporting portion and a second hook portion, the second hook portion is connected to an end of the second supporting portion away from the shell; the surface of the second supporting portion facing the fixed clip is a plane, and the mainboard is arranged between the second supporting portion and the first supporting portion.

5. The mainboard fixing structure according to claim 4, characterized in that: The surface of the second hook portion facing the shell is a second inclined surface, and an angle is formed between the second inclined surface and a horizontal plane parallel to the main board; the second hook portion is used to limit the main board between the limiting column and the second inclined surface.

6. The mainboard fixing structure according to claim 5, characterized in that: The angle between the first inclined surface and a horizontal plane parallel to the main board is 8-15 degrees; and / or, The included angle between the second inclined surface and a horizontal plane parallel to the main board is 8-15 degrees.

7. The mainboard fixing structure according to claim 4, characterized in that: The fixing buckle further includes a first reinforcing rib, which is connected to the surface of the first supporting portion and the first hook portion away from the elastic buckle and is located at the center of the surface; and / or, The elastic buckle further includes a second reinforcing rib connected to the second supporting portion and a surface of the second hook portion away from the fixing buckle.

8. The mainboard fixing structure according to claim 1, characterized in that: The first supporting portion is used to be clamped in the U-shaped groove of the mainboard, and a chamfer is provided at a corner of a side surface of the first supporting portion.

9. The mainboard fixing structure according to claim 1, characterized in that: The mainboard fixing structure comprises at least two positioning posts arranged at intervals, and the at least two positioning posts are used to be inserted into at least two third positioning holes of the mainboard in a one-to-one correspondence.

10. A display device, characterized in that: include: case; Motherboard; The mainboard fixing structure is the mainboard fixing structure as described in any one of claims 1 to 9, and the mainboard fixing structure fixes the mainboard on the housing.

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