Metal piece for connecting display module and display equipment

By designing a metal part for connecting the display module with spaced convex portions, and using adhesive to fill the gap and spill out to the groove, the problem of fixation instability between the metal part and the lamp plate is solved, and higher adhesion and connection stability are achieved.

CN222914360UActive Publication Date: 2025-05-27UNILUMIN GRP
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Patent Information

Application Number
CN202421937642.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-12
Publication Date
2025-05-27
Estimated Expiration
2034-08-12

AI Technical Summary

Technical Problem

During the production and splicing of display screens, the fixing method between metal parts and lamp plates has problems such as limited adhesive area and unstable adhesion of the coating, resulting in unstable connection.

Method used

A metal member for connecting the display module is designed, which includes a metal member body and a connecting part. The connecting part is arranged at the root of the metal member body, including several spaced convex parts, a gap is formed between the convex parts, and an adhesive fills the gap between the convex parts and can spill out to the grooves of the outer wall of the convex part.

Benefits of technology

By increasing the contact area of ​​the adhesive, the adhesion between the metal parts and the lamp plate is improved, the thrust moment is reduced, the ability to withstand tension is enhanced, the problem of unstable adhesion of the coating is solved, and the stability of the connection is improved.

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Abstract

The utility model discloses a metal piece for display module connection and a display device, which comprise a metal piece main body and a connecting part, the connecting part is arranged at the root part of the metal piece main body, the connecting part comprises at least two convex parts, the convex parts extend towards the direction far away from the metal piece main body, and the end surfaces, far away from the metal piece main body, of the at least two convex parts are positioned on the same horizontal plane. A gap is formed between every two adjacent protruding parts, and the side, close to the metal piece body, of the outer wall of each protruding part is inwards provided with a groove. The metal piece is in contact with the lamp panel in an inverted mode, the adhesive is filled in the gaps among the protruding parts and overflows to the grooves in the outer walls of the protruding parts, the contact area between the adhesive and the metal piece is greatly increased, the adhesive wraps the root of the metal piece in a solidified mode and is connected with the lamp panel, the thrust torque of the metal piece is reduced, and the service life of the lamp panel is prolonged. The tensile force bearing capacity of the metal piece is improved, the adhesive force between the metal piece and the lamp panel is improved, and the stability of connection between the metal piece and the lamp panel is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of display devices, and particularly relates to a metal part for connecting a display module and a display device. Background Art

[0002] In the production and splicing process of a display screen, in addition to welding, epoxy resin glue is usually used to fix the metal part and the lamp board in the fixing manner between the lamp board and the metal part. In actual use, due to the limited space of the high-density board, when using metal parts, especially cylindrical legs or hexagonal legs, the diameter is limited, resulting in a limited bonding area. Epoxy resin glue is in a paste state and there is no capillary phenomenon during the extrusion process, which makes it easy to have problems when the metal part is subjected to thrust and tensile tests. At the same time, when iron sheets or metal parts need to use coatings due to reasons such as salt spray, and the coating is an electrochemical reaction, it is very difficult to control the process during production, resulting in changes in the coating adhesion and there are certain potential hazards. The utility model proposes a new solution for the above problems. Summary of the Utility Model

[0003] In order to overcome at least one of the above-mentioned disadvantages, the utility model provides a metal part for connecting a display module and a display device. The object of the utility model can be achieved by adopting the following technical solutions:

[0004] In the first aspect of the utility model, a metal part for connecting a display module is provided, and the metal part includes:

[0005] A metal part main body;

[0006] A connecting part, the connecting part is arranged at the root of the metal part main body, the connecting part includes at least two convex parts, the convex parts extend in a direction away from the metal part main body, end faces of at least two of the convex parts away from the metal part main body are located on the same horizontal plane, a gap is formed between adjacent two of the convex parts, and the outer wall of the convex part is recessed inwardly on a side close to the metal part main body.

[0007] In an implementable manner, a plurality of the convex parts are arranged circumferentially, and the distance between adjacent two of the convex parts is the same.

[0008] In an implementable manner, the number of the convex parts is two, three, four or other integer numbers.

[0009] In an implementable manner, the number of the convex parts is two, the two convex parts are arranged oppositely, and a straight slot is formed between the two convex parts; or,

[0010] The number of the convex parts is three, the included angle between the three convex parts is 120°, and a three-tooth slot is formed between the three convex parts; or,

[0011] The number of the convex parts is four, and the included angle between the four convex parts is 90°, and a cross groove is formed among the four convex parts; or,

[0012] The number of the convex parts is six, and the included angle between the six convex parts is 60°, and a six-tooth groove is formed among the six convex parts.

[0013] In an implementable embodiment, the metal part body includes a metal part main body and a metal part root, the metal part main body and the metal part root are fixedly connected or integrally formed, the connecting part is arranged at one end of the metal part root away from the metal part main body, and the cross-sectional area of the metal part main body is larger than the cross-sectional area of the metal part root.

[0014] In an implementable embodiment, the metal part body is an eccentric structure, and the axis of the metal part main body is arranged staggeredly with the axis of the metal part root.

[0015] In an implementable embodiment, the metal part main body is made of iron or an iron alloy.

[0016] In an implementable embodiment, on the plane where the metal part root is located, the projection of the convex part is within the range of the metal part root, and at least one groove wall flush with the end face of the convex part is included at the outer wall groove of the convex part.

[0017] In a second aspect of the present invention, a display device is provided, including:

[0018] A metal part for connecting a display module as described in any item of the first aspect,

[0019] And a lamp board;

[0020] Wherein, the metal part is connected to the non-display surface of the lamp board through an adhesive.

[0021] In an implementable embodiment, the display device further includes:

[0022] A box body;

[0023] A magnetic attraction part, and the magnetic attraction part is arranged on the box body;

[0024] Wherein, the magnetic attraction part is magnetically connected to the metal part, and the box body and the lamp board are detachably connected through the magnetic attraction part and the metal part.

[0025] Advantageous technical effects of the present utility model: According to the present disclosure, the metal part for connecting the display module includes a metal part main body and a connecting part. The connecting part includes a plurality of convex parts arranged at intervals. The plurality of convex parts are separated from each other and form a gap. The metal part is buckled and in contact with the lamp board. The adhesive is filled in the gap between the plurality of convex parts, and the adhesive can also overflow to the groove on the outer wall of the convex part, greatly increasing the contact area between the adhesive and the metal part. The cured adhesive wraps around the root of the metal part and is connected to the lamp board, reducing the thrust moment of the metal part and improving the tensile strength of the metal part, making it more conducive to withstanding the thrust test, improving the adhesion between the metal part and the lamp board, solving the adhesion risk caused by the plating layer, and improving the stability of the connection between the metal part and the lamp board. Description of the Drawings

[0026] In the drawings, the following is given by way of example and not by way of limitation:

[0027] Figure 1 Shows a schematic structural view of the display device of the present utility model from a first angle (the cabinet is not shown);

[0028] Figure 2 Shows a schematic structural view of the display device of the present utility model from a second angle (the cabinet is not shown);

[0029] Figure 3 Shows a schematic structural view of the display device of the present utility model from a third angle (the cabinet is not shown);

[0030] Figure 4 Shows a schematic structural view of the display device of the present utility model from a fourth angle (the cabinet is not shown);

[0031] Figure 5 Shows a cross-sectional view of the structure of the display device of the present utility model (the cabinet is not shown);

[0032] Figure 6 Shows a cross-sectional view of the structure of the display device of the present utility model;

[0033] Figure 7 Shows Figure 6 An enlarged schematic view of the structure of part A;

[0034] Figure 8 Shows a cross-sectional view of the traditional connection structure between the metal part and the lamp board;

[0035] Figure 9 Shows a perspective view of the traditional connection structure between the metal part and the lamp board from an angle;

[0036] Figure 10 Shows a cross-sectional view of the connection structure between the metal part and the lamp board of the present utility model;

[0037] Figure 11 The structural sectional view of the metal part, lamp board and adhesive of the present utility model at one angle is shown;

[0038] Figure 12 The structural schematic diagram of the metal part, lamp board and adhesive of the present utility model at another angle is shown;

[0039] Figure 13 The three-dimensional connection structure diagram of the first metal part and the lamp board of the present utility model at one angle is shown;

[0040] Figure 14 The three-dimensional connection structure diagram of the second metal part and the lamp board of the present utility model at one angle is shown;

[0041] Figure 15 The three-dimensional connection structure diagram of the third metal part and the lamp board of the present utility model at one angle is shown;

[0042] Figure 16 The three-dimensional connection structure diagram of the fourth metal part and the lamp board of the present utility model at one angle is shown;

[0043] Figure 17 Shows Figure 10 The sectional view of the connection structure size of the metal part and the lamp board.

[0044] In the figure:

[0045] 1. Lamp board; 2. Metal part; 3. Adhesive; 4. Box body; 5. Magnetic attraction part;

[0046] 21. Metal part main body; 22. Connection part;

[0047] 211. Metal part body; 212. Root of metal part; 221. Convex part. Specific embodiments

[0048] In the following detailed disclosure, reference is made to the accompanying drawings and these embodiments are fully described. To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the described embodiments are not limited thereto. The present utility model will be further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0049] In the present utility model, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plurality" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0051] In the first aspect of the present utility model, as Figures 1 - 7 and Figure 10 Figure 17 shown, there is provided a metal part for connecting a display module. The metal part 2 includes a metal part main body 21 and a connecting part 22. The connecting part 22 is provided at the root of the metal part main body 21. The connecting part 22 includes at least two convex parts 221. The convex parts 221 extend in a direction away from the metal part main body 21. The end faces of at least two convex parts 221 away from the metal part main body 21 are located on the same horizontal plane. A gap is formed between two adjacent convex parts 221. The outer wall of the convex part 221 is recessed inward on the side close to the metal part main body 21.

[0052] In the traditional connection method, the end face of the metal part 2 is directly connected to the lamp board 1 through an adhesive 3, as Figure 8 and Figure 9 shown. The adhesive 3 is filled between the end face of the metal part 2 and the lamp board 1, and the adhesive 3 may also overflow beyond the abutting surface of the two. At this time, the contact area between the adhesive 3 and the metal part 2 is approximately the cross-sectional area of the end face of the metal part 2, and the contact area between the adhesive 3 and the lamp board 1 is slightly larger than the cross-sectional area of the end face of the metal part 2. The bonding area between the two is small and only extends on a plane, and the adhesion is low. The traditional connection structure of the metal part 2 and the lamp board 1 through the adhesive 3 is not stable, and there is a situation where the metal part 2 is likely to fall off after being fixed with glue.

[0053] The metal part 2 of the present utility model includes a metal part main body 21 and a connecting part 22. The connecting part 22 includes a number of convex parts 221 arranged at intervals. The convex parts 221 are separated from each other and form a gap. The metal part 2 is buckled and in contact with the lamp board 1. The end faces of the convex parts 221 are all in contact with the lamp board 1. The adhesive 3 is filled in the gap between the convex parts 221. The adhesive 3 can climb upward along the gap. The adhesive 3 can also overflow to the groove at the outer wall of the convex part 221, greatly increasing the bonding area of the adhesive 3 in the V direction. The adhesive 3 cures and wraps the root of the metal part 2 and is connected to the lamp board 1, reducing the thrust moment of the metal part 2, improving the ability of the metal part 2 to withstand tension, being more conducive to withstanding the thrust test, improving the adhesion between the metal part 2 and the lamp board 1, solving the adhesion risk caused by the plating layer, and improving the stability of the connection between the metal part 2 and the lamp board 1.

[0054] It can be understood that the convex parts 221 are arranged separately from each other. The convex part 221 includes a fixed end and a free end. The fixed end is fixedly connected to the metal part main body 21, and the free end extends away from the metal part main body 21. The convex part 221 can be arranged to extend along the axial direction of the metal part main body 21. A gap for the adhesive 3 to enter is formed between the convex parts 221.

[0055] Among them, as Figure 11 and Figure 12 shown, the adhesive 3 can overflow from the gap between the convex parts 221 to the outer peripheral side of the convex part 221. There is a groove on the outer wall of the convex part 221. The adhesive 3 can wrap around the outer wall of the convex part 221 and extend downward until it is connected to the lamp board 1. The adhesive 3 cures to form a base that tightly wraps a part of the convex part 221 together, greatly increasing the contact area between the adhesive 3 and the metal part 2, providing the bonding area and bonding force. The structure similar to the base reduces the thrust moment of the metal part 2. The adhesion risk caused by the plating layer is solved by the groove method, thereby improving the reliability of the bonding between the metal part and the lamp board.

[0056] As Figure 17 shown, the radius of the root 212 of the metal part is R. The height of the adhesive 3 is set to 1 mm, the height of the metal part 2 is L. The groove width W of the gap between the convex parts 221 is set to 1 mm. The length of the straight side of the slot is set to be approximately equal to 2*R - 1. The height L1 from the groove to the lamp board 1 is set to 0.5 mm.

[0057] Among them, when the shape of the root 212 of the metal part is a traditional cylindrical shape, the bonding area at this time = π*R*R(H) + 2πR*1(V).

[0058] Among them, in this embodiment, taking the cross-sectional shape of the root 212 of the metal part as a circle and provided with convex parts 221 and grooves as an example, the adhesive area at this time = π*R*R(H)+(4*(2*R - 1)*1+(2πR - 2)*0.5)(V).

[0059] Among them, when R = 2 mm is set, the bonding area of the traditional metal part 2 at this time = π*2*2 + 2π*2*1 = 12.56(H)+12.56(V) mm 2 , the bonding area of the metal part 2 in this embodiment = π*2*2+(4*(2*2 - 1)*1+(2π*2 - 2)*0.5) = 12.56(H)+17.28(V) mm 2 , the adhesive force Fv in the vertical direction increases to 1.38 times.

[0060] Among them, when L = 4 mm is set, since the adhesive 3 is at a height of 1 mm in the gap, the thrust moment is simplified, and F*4 is reduced to F*3, which is equivalent to the thrust moment being 75% of the original. In addition, when the adhesive 3 flows into the groove, the cured adhesive 3 can increase the anti-thrust and tensile forces.

[0061] In an implementable manner, as Figures 12 - 16 shown, several convex parts 221 are arranged along the circumferential direction, and the distance between two adjacent convex parts 221 is the same.

[0062] Among them, several convex parts 221 are arranged along the circumferential direction, and the gaps between adjacent convex parts 221 are interconnected, facilitating the self-flow filling of the adhesive 3 in the gaps between several convex parts 221.

[0063] In an implementable manner, the number of convex parts 221 is two, three, four or other integer numbers, as long as it can ensure that the horizontal surface area and vertical surface area of the convex parts 221 in contact with the adhesive 3 are appropriate, and it can be specifically set according to the shape and size of the metal part 2.

[0064] Among them, as Figure 14 shown, the number of convex parts 221 can be two, and the two convex parts 221 are arranged oppositely, and a straight groove is formed between the two convex parts 221.

[0065] Among them, as Figure 15 shown, the number of convex parts 221 can be three, and the angle between the three convex parts 221 is 120°, and a three-tooth groove is formed between the three convex parts 221.

[0066] Among them, as Figure 13 shown, the number of convex parts 221 can be four, and the angle between the four convex parts 221 is 90°, and a cross groove is formed between the four convex parts 221.

[0067] Among them, as Figure 16As shown, the number of convex portions 221 can be six, and the included angle between four convex portions 221 is 60°. Six convex portions 221 form six tooth grooves.

[0068] In an implementable manner, as Figures 12 - 16 shown, the metal part body 21 includes a metal part main body 211 and a metal part root 212. The metal part main body 211 and the metal part root 212 are fixedly connected or integrally formed. The connecting portion 22 is provided at one end of the metal part root 212 away from the metal part main body 211, and the cross-sectional area of the metal part main body 211 is larger than the cross-sectional area of the metal part root 212.

[0069] The metal part body 21 includes a metal part main body 211 and a metal part root 212. Due to the limited space of the high-density lamp board 1, the cross-sectional area of the metal part root 212 is generally smaller than the cross-sectional area of the metal part main body 211. The metal part root 212 serves as a support leg of the metal part main body 211 for fixedly connecting with the connecting portion 22. The metal part root 212 is usually cylindrical or hexagonal prism-shaped, and the metal part main body 211 is connected to the lamp board 1 through the metal part root 212 and the connecting portion 22.

[0070] Among them, the metal part 2 is usually made of hard metal material. In this embodiment, the metal part 2 is provided, and the metal part main body 211 and the metal part root 212 are integrally formed, with a stable structure.

[0071] Among them, the metal part 2 is usually made of hard metal material. In this embodiment, the metal part 2 is provided, the metal part main body 211 is made of iron or iron alloy, and the metal part root 212 is made of copper or copper alloy.

[0072] In an implementable manner, as Figures 12 - 16 shown, the metal part body 21 provided in this embodiment is an eccentric structure, and the axis of the metal part main body 211 is staggered with the axis of the metal part root 212.

[0073] This embodiment provides an eccentric structure. Among them, the cross-sectional area of the metal part main body 211 is larger than the cross-sectional area of the metal part root 212, and the axes of the metal part main body 211 and the metal part root 212 are parallel but not coincident, which is convenient for installation at the edge position of the module and facilitates replacing the original module copper pins used for soldering.

[0074] Among them, the cross-sectional shape of the metal part main body 211 is one of a polygon, a circle, or a special shape.

[0075] Among them, the cross-sectional shape of the metal part root 212 is one of a polygon, a circle, or a special shape.

[0076] In an implementable manner, as Figure 10As shown, on the plane where the root 212 of the metal part is located, the projection of the convex part 221 is within the range of the root 212 of the metal part, and at least one groove wall flush with the end face of the convex part 221 is included at the outer wall groove of the convex part 221.

[0077] It can be understood that when the adhesive overflows from the gap between two adjacent convex parts 221, the adhesive 3 diffuses outward along the gap to the outer wall of the convex part 221. The area of the convex part 221 near the root 212 of the metal part is set to be concave, that is, a flange is formed on the outer peripheral side of the end of the convex part 221 away from the metal part body 21, so that the adhesive 3 can diffuse along the concave outer wall and bond with the flange, and the outer peripheral side of the convex part 221 is wrapped by the adhesive 3. When the adhesive 3 cures, it forms a whole and tightly adheres several convex parts 221 and the lamp board 1 together.

[0078] Among them, on the plane where the root 212 of the metal part is located, the projection of the convex part 221 is within the range of the root 212 of the metal part, that is, the convex part 221 does not protrude beyond the outer edge of the root 212 of the metal part, so as to reduce the area where the adhesive 3 overflows and diffuses, and try to make the adhesive 3 wrap around the convex part 221 to avoid polluting other areas of the lamp board 1.

[0079] Among them, at least one groove wall flush with the end face of the convex part 221 is included at the outer wall groove of the convex part 221, that is, the upper end face of the flange is a plane flush with the lamp board 1. When the adhesive 3 diffuses to the outer side groove of the convex part 221, the adhesive 3 contacts the upper end face of the flange under the action of its own weight until it bonds with the lamp board 1, improving the uniformity during the diffusion of the adhesive 3, improving the uniformity of the thickness after the adhesive 3 cures, reducing the occurrence of weak positions, and improving the adhesion force.

[0080] In the second aspect of the present invention, as Figures 1 - 7 shown, a display device is provided, including a metal part for connecting a display module as described in any one of the first aspect, and a lamp board 1; wherein, the metal part 2 is connected to the non-display surface of the lamp board 1 through an adhesive 3.

[0081] Among them, the adhesive 3 generally uses epoxy resin glue, and other flexible adhesive materials can also be used. Epoxy resin glue has good chemical stability and has advantages such as corrosion resistance, vibration resistance, impact resistance, and heat resistance. Epoxy resin glue is composed of an epoxy resin monomer containing an epoxy group and a curing agent. Epoxy resin glue is composed of an epoxy resin monomer containing an epoxy group and a curing agent. The epoxy group has strong affinity and composite properties, and the surfactant in the epoxy resin glue can destroy the oxide film, so that the epoxy resin glue forms better contact with the metal surface and improves the bonding strength. The adhesion strength of epoxy resin glue to metal materials is relatively high, and it can always maintain the bonding strength under high load and vibration conditions.

[0082] When the metal part 2 is connected to the lamp board 1, the adhesive 3 wraps around the end of the convex part 221 and the lamp board 1, the gaps between several convex parts 221, and the outer peripheral side of the convex part 221.

[0083] In specific implementation, first place the adhesive 3 at a predetermined position on the lamp board. Invert the metal part 2 so that the connecting part 22 contacts the adhesive 3 until it abuts against the lamp board 1. The flexible adhesive 3 is squeezed by the metal part 2. The first part of the adhesive 3 is located between the end face of the convex part 221 and the lamp board 1. The second part of the adhesive 3 overflows to the outside of the convex part 221. The third part of the adhesive 3 is squeezed into the gap between the convex parts 221. The excess adhesive 3 in the gap overflows outward to the groove and converges with the second part of the adhesive 3. After the first part, the second part, and the third part of the adhesive 3 are cured, a base is formed, tightly wrapping the convex part 221 and adhering to the lamp board 1, which can reduce the thrust moment at the root 212 of the metal part, is more conducive to withstanding the thrust test, greatly increases the adhesive area of the adhesive 3 in both the horizontal and vertical directions, greatly improves the adhesion, and improves the connection stability between the metal part 2 and the lamp board 1.

[0084] In an implementable embodiment, as Figure 6 and Figure 7 shown, the display device further includes a box body 4 and a magnetic attraction part 5. The magnetic attraction part 5 is arranged on the box body 4, and the magnetic attraction part 5 is magnetically connected to the metal part 2. The box body 4 and the lamp board 1 are detachably connected through the magnetic attraction between the magnetic attraction part 5 and the metal part 2.

[0085] Among them, the detachable connection is realized by the magnetic attraction between the magnetic attraction part 5 and the metal part 2. At least a part of the metal part 2 can be made of iron metal material, that is, at least part of the metal part body 211 is made of iron metal or iron alloy.

[0086] Among them, the lamp board 1 covers the box body 4. The magnetic attraction part 5 is arranged in the inner cavity of the box body 1. The metal part 2 is bonded to the non-display surface of the lamp board 1. The detachable connection between the box body 4 and the lamp board 1 is realized through the magnetic attraction between the metal part 2 and the magnetic attraction part 5, which is convenient for installation and disassembly, improves the installation and disassembly effect, and improves user satisfaction.

[0087] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0088] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0089] In view of the foregoing detailed description, these and other changes can be made to these embodiments. This written description includes the best mode of the embodiments to disclose the present utility model. The scope of the patent obtained for the present utility model is defined by the claims, and the claims are not limited by this disclosure. The protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent replacements or changes, and all are within the protection scope of the present utility model.

Claims

1. A metal piece for connecting a display module, characterized in that: The metal part comprises: Metal body; A connecting portion, wherein the connecting portion is arranged at the root of the metal component body, and the connecting portion includes at least two protrusions, wherein the protrusions extend in a direction away from the metal component body, and at least two of the protrusions are located in the same horizontal plane away from the end surface of the metal component body, and a gap is formed between two adjacent protrusions, and the outer wall of the protrusion is close to an inward groove on one side of the metal component body.

2. The metal fitting for connecting the display module according to claim 1, characterized in that: The plurality of protrusions are arranged along the circumferential direction, and the distance between two adjacent protrusions is the same.

3. The metal fitting for connecting the display module according to claim 1 or 2, characterized in that: The number of the protrusions is two, three, four or other integers.

4. The metal piece for connecting the display module according to claim 3, characterized in that: There are two protrusions, the two protrusions are arranged opposite to each other, and a straight groove is formed between the two protrusions; or, The number of the convex parts is three, the angle between the three convex parts is 120°, and three tooth grooves are formed between the three convex parts; or, The number of the protrusions is four, the angle between the four protrusions is 90°, and a cross groove is formed between the four protrusions; or, The number of the convex parts is six, the angle between the six convex parts is 60°, and six tooth grooves are formed between the six convex parts.

5. The metal piece for connecting the display module according to any one of claims 1 to 4, characterized in that: The metal component body includes a metal component body and a metal component root, the metal component body and the metal component root are fixedly connected or integrally formed, the connecting portion is arranged at one end of the metal component root away from the metal component body, and the cross-sectional area of ​​the metal component body is larger than the cross-sectional area of ​​the metal component root.

6. The metal member for connecting the display module according to claim 5, characterized in that: The metal component body is an eccentric structure, and the axis of the metal component body and the axis of the root of the metal component are arranged in a staggered manner.

7. The metal member for connecting the display module according to claim 5, characterized in that: The metal component body is made of iron or iron alloy.

8. The metal member for connecting the display module according to claim 5, characterized in that: On the plane where the root of the metal part is located, the projection of the convex part is located within the range of the root of the metal part, and the groove on the outer wall of the convex part includes at least one groove wall that is flush with the end face of the convex part.

9. A display device, characterized in that: include: The metal piece for connecting a display module according to any one of claims 1 to 8, and light panels; Wherein, the metal piece is connected to the non-display surface of the light board through an adhesive.

10. The display device according to claim 9, characterized in that The display device further includes: Box; A magnetic attraction component, wherein the magnetic attraction component is arranged on the box body; Wherein, the magnetic attraction component is magnetically connected to the metal component, and the box body and the light panel are detachably connected to the metal component through the magnetic attraction component.