CN111261059A

CN111261059A - LED display screen case with welding-free door frame

Info

Publication number: CN111261059A
Application number: CN202010164749.5A
Authority: CN
Inventors: 潘尚法; 夏伟良
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-06-09

Abstract

The invention provides an LED display screen case with a welding-free door frame.A case body is formed by a metal sheet, and four sides of the case body are folded simultaneously to form four side walls of the case body; the front part of the box body is provided with a plurality of module installation windows, and the edges of the module installation windows stretch towards the turned-over edge in the box body. The case is also provided with a door frame and a door. The flanges at the edges of the door and the door hole are buckled with each other; the hems of the door frame and the door opening are mutually buckled to form a U-shaped gap, and the gap is filled with adhesive for bonding or sprayed with plastic powder for baking to fix the door frame on the door opening. The edge of the module mounting window is additionally provided with flanging stretching, so that the strength of the box body is improved; the door frame is additionally arranged to serve as a middle transition body between the door and the box body, and the automatic welding is suitable; the gap is filled with adhesive for bonding or sprayed with plastic powder for baking to fix the door frame on the door opening, thereby reducing the welding affecting the manufacturing speed. The invention thus achieves the purposes of saving materials, saving labor and reducing cost.

Description

LED display screen case with welding-free door frame

Technical Field

The invention relates to the technical field of display equipment, in particular to a structure and manufacture of an LED display screen case with a welding-free door frame.

Background

Under the continuous development and promotion of 'Chinese manufacturing', the LED display screen chassis is increasingly pursuing to save materials, save labor and reduce weight and cost under the condition of meeting the strength requirement. This requires continuous improvement in the structural design of LED display cabinet, development and adoption of techniques and processes not yet used thereon, such as calendering and drawing using dies, robot welding, and automated processing in a production line.

Chinese patent document CN207217015U discloses "LED display screen box", and fig. 1 (i.e. original fig. 3) is a schematic diagram of an exemplary embodiment of the solution. Referring to fig. 1, the front part of the frame body of the box body is provided with a plurality of LED module mounting frames arranged in a matrix manner by a plurality of connecting rod bodies which are arranged in a criss-cross manner, the rear part of the frame body is provided with a door, one side of the door is hinged with the frame body by an inserting and rotating structure, and the door is mounted on the frame body. In order to satisfy the strength requirement, the material constituting the "frame main body" must have a certain thickness, and the structure of the "LED module mounting frame arranged in a matrix in a criss-cross arrangement" obviously cannot contribute to reduction of the material thickness to save material and weight. Moreover, the designed structure is obviously suitable for the manufacturing process of manual successive flanging and manual electric welding, because the shapes of the box edge and the box corner are complicated, automatic processing and robot electric welding are difficult to use, and the labor cost cannot be saved. Moreover, the electric welding itself has disadvantages, such as labor-consuming time, polishing after welding, surface treatment (painting, powder spraying, oxidation, etc.), and the manufacturing accuracy is affected.

Chinese patent document CN205194244U discloses an LED die-casting aluminum box, and the technical scheme considers that the problems of unreasonable structural design … …, poor box strength, heavy box, complex production and processing technology, high production and manufacturing cost and the like of the traditional sheet metal box exist, so that the scheme adopts the die-casting aluminum box to realize light weight, reasonable structural design and high support strength, adopts casting one-step forming and can realize box manufacturing through turning and milling technologies, thereby saving a large amount of production such as sheet metal machining, welding and the like, and effectively reducing the production and manufacturing cost. However, with the die-casting aluminum box, in order to ensure the die-casting quality, the effects of reducing the thickness, reducing the weight and increasing the strength are still insufficient due to the process limitation, and meanwhile, the problems of long time and high cost caused by the use of die-casting, turning and milling processes exist, and the manufacturing precision, the manufacturing efficiency and the production and manufacturing cost are still improved.

Therefore, the structural design and manufacturing techniques and processes of the LED display cabinet still need to be improved.

Disclosure of Invention

The invention aims to solve the technical problem that aiming at the defects of the prior art, the structure of the LED display screen case is improved and designed, so that the material is saved, the weight is reduced, and the automatic processing of a production line is easy to realize, thereby achieving the purposes of saving materials and labor and reducing the cost.

In order to solve the technical problems, the technical scheme of the invention is to provide an LED display screen case with a welding-free door frame, which comprises a case body, a door frame and at least one door; the box body is a rectangular body formed by a metal sheet, and four sides of the metal sheet are folded simultaneously through a die to form four side walls of the box body; a plurality of module mounting windows are arranged on the metal sheet in the front of the box body, and the edges of the module mounting windows are stretched towards the inward flanging of the box; the rear part of the box body is provided with a rectangular door opening for installing a door frame, and the door opening and the door frame are bonded by an adhesive or are fixed by spraying plastic powder through baking; the door frame is provided with rectangular door holes with the same number as the doors, and the doors are respectively arranged on the door frame and can close or open the door holes.

Preferably, the edge of a door hole of the door frame is stretched in an L-shaped flanging mode, and the outermost end of the flanging is flanged and turned outwards; the edge of the door is stretched in a spoon-shaped flanging manner, and the outermost end of the flanging is turned inwards in a flanging manner; when the door is closed on the door hole, the flanges at the edges of the door and the door hole are buckled with each other.

Preferably, the edge of the door opening of the box body is a Z-shaped folded edge, the edge of the door frame matched with the door opening is an L-shaped folded edge, the door frame is buckled on the door opening, the folded edges are mutually buckled to form a U-shaped gap, and the gap is filled with adhesive for bonding or sprayed with plastic powder for baking to fix the door frame on the door opening; and the outermost end of the Z-shaped folded edge at the edge of the door opening is bent and turned upwards, so that the Z-shaped folded edge is not easy to move out when the L-shaped folded edge at the edge of the door frame is buckled on the door frame.

Preferably, the door is made of a metal sheet and is provided with a louvered heat dissipating window bulging outward of the case, and the entire heat dissipating window including the louvers is formed by rolling and drawing the same metal sheet constituting the door.

The invention has the beneficial effects that: the module installation window edge is additionally provided with the flanging for stretching, so that the unexpected benefit is brought, namely, the effect of the reinforcing rib is realized on the metal sheet forming the case, the strength of the case body is increased, and the reduction of the thickness and the weight of the material is facilitated. The case comprises a case body, a door frame and a door, wherein the door frame is additionally arranged to serve as a middle transition body between the door and the case body, so that the folded edges of the case body are few and simple, the processes are reduced, and the welding seams at the four corners of the case body are simple and suitable for automatic welding, such as robot welding. Four edges of a metal sheet are simultaneously folded by adopting a die to form four side walls of the box body, the folded edges of the box body and the door frame are mutually buckled to form a U-shaped gap, and the box body can be used for carrying an automatically poured adhesive for bonding and fixing or carrying an automatically sprayed plastic powder for baking and fixing, so that the manufacturing consistency is ensured, the welding influencing the manufacturing speed is reduced, and the automatic processing of a production line is easily realized. The invention thus achieves the purposes of saving materials, saving labor and reducing cost.

Drawings

FIG. 1 is a schematic structural diagram of a case of an LED display screen in the prior art;

fig. 2 is a schematic structural diagram of an LED display screen chassis in embodiment 1;

FIG. 3 is a schematic view of a joining portion of a door frame and a case in embodiment 1;

FIG. 4 is an enlarged view of a portion where the door frame and the case are coupled in embodiment 1;

fig. 5 is a schematic view of a joint portion between the door and the doorframe in embodiment 1.

The figures include the following reference numerals:

1-a box body; 2-a door frame; 3-a door; 4-module installation window; 5-door opening; 6-door hole; 7-a heat dissipation window; 8-door opening edge; 9-door hole edge; 10-door frame edge; 11-door edge; 12-Module installation window edge.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, the terms "center", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Fig. 2 is a schematic structural diagram of an LED display screen chassis according to embodiment 1 of the present invention, please refer to fig. 2. The components of the LED display screen cabinet include a cabinet 1, a door frame 2, and two doors 3 (one door is shown in fig. 2). The box body 1 is a rectangular body formed by a metal thin plate, four sides of the metal thin plate are subjected to corner cutting by a die and then are folded to form four side walls of the box body 1, and therefore manufacturing consistency of the box body is guaranteed. The sheet metal of the front of the cabinet 1 is provided with 18 module mounting windows 4 arranged in a 6x3 array (15 are shown in figure 2, the top row being obscured). The module installation window 4 is rectangular, four corners are round corners, and the edge is stretched towards the inward flanging of the box.

Fig. 3 is a schematic view of a joint portion of the door frame and the box body in embodiment 1, please refer to fig. 2 and 3. The whole circle edge of the module installing window 4 is turned over to the inside of the box in a seamless mode, namely the edge 12 of the module installing window is stretched to the inside of the box in a turned-over mode. The flanging and drawing is to roll the edge of the metal sheet by a die to form a seamless closed loop, and the bending is generally completed by one-step stamping by a properly designed die, so that the processing is convenient and easy. The module installation window edge 12 is stretched towards the in-box L-shaped flange, which obviously increases the strength of the module installation window 4 and also the strength of the box body 1 provided with 18 module installation windows.

Please continue to refer to fig. 2. The rear part of the box body 1 is provided with a rectangular door opening 5 for installing a door frame 2, and the door opening 5 and the door frame 2 are adhered and fixed by an adhesive, or are sprayed with plastic powder and then baked and fixed, or are welded and fixed.

Fig. 4 is an enlarged schematic view of a joint portion of the door frame and the box body in embodiment 1, please refer to fig. 2, fig. 3, and fig. 4 continuously. The edge 8 of the door opening of the box body 1 is a Z-shaped folded edge, and the outermost end of the Z-shaped folded edge is bent and turned upwards. The door frame edge 10 matched with the door opening 5, namely the outer ring edge of the door frame 2, is an L-shaped folded edge. The door frame 2 is buckled on the door opening 5, namely the outer edge of the L-shaped folding edge of the door frame edge 10 is in contact with the inner edge of the Z-shaped folding edge of the door opening edge 8, the outer edge of the Z-shaped folding edge is bent and turned upwards, the folding edges are buckled with each other to form a U-shaped gap, an adhesive is poured into the gap for bonding, or plastic powder is sprayed in the gap and then baked, or the door frame 2 is welded along the gap, so that the door frame 2 is fixed on the door opening 5. Obviously, the outermost end of the Z-shaped folded edge of the door opening edge 8 is bent and turned upwards, so that the Z-shaped folded edge is not easy to move out when the L-shaped folded edge of the door frame edge 10 is fastened on the door frame edge. The folded edges of the door opening 5 and the door frame 2 are buckled with each other to form a U-shaped gap which can receive poured adhesives or sprayed plastic powder and is beneficial to bonding or baking fixation. The U-shaped slit also facilitates welding if welding fixation is used. Moreover, the respective hems of the door opening edge 8 and the door frame edge 10 obviously increase the strength of the case 1 and the door frame 2, respectively.

Please continue to refer to fig. 2. The frame 2 is provided with the same number of rectangular door openings 6 as the doors 3, in this case two substantially identical doors 3, one door 3 being shown in fig. 2. The doors 3 are respectively installed to the door frames 2 by hinges and can close or open the door holes 6.

Fig. 5 is a schematic view of a joint of a door and a doorframe in embodiment 1, please continue to refer to fig. 2 and 5. The door hole edge 9 arranged on the door frame 2 is stretched towards the outside of the box in an L-shaped flanging manner, namely, the whole circle edge of the door hole 6 is seamlessly L-shaped flanging towards the outside of the box, and the outermost end of the flanging is flanged outwards again. The edge 11 of the door is stretched towards the inside of the box in a spoon-shaped flanging manner, namely the whole circle edge of the door 3 is stretched towards the seamless spoon-shaped flanging in the box, and the outermost end of the flanging is turned inwards in a flanging manner. When the door is closed on the door hole, the flanges at the edges of the door and the door hole are mutually buckled, namely the spoon-shaped flange at the edge 11 of the door and the L-shaped flange at the edge 9 of the door hole are mutually buckled, and a waterproof sealing ring (not shown in figure 5) can be arranged in a buckled gap. It is clear that the respective flanging of the door opening edge 9 and the door edge 11 increases the strength of the door frame 2 and the door 3, respectively.

Please continue to refer to fig. 2 and 5. The door 3 is made of a metal sheet, and a heat dissipation window 7 with louvers is provided thereon, which bulges to the outside of the case, the whole heat dissipation window including the louvers is formed by rolling and drawing the same metal sheet constituting the door 3, the upper, left and right three sides of the heat dissipation window 7 are integrally connected with the metal sheet constituting the door 3, and the lower side is broken from the metal sheet to be open.

Please continue to refer to fig. 2 to 5. The flanging of module installation window border 12 is tensile, the flanging of door opening border 9 is tensile and the flanging of door border 11 is tensile, has brought unexpected benefit, has played the effect of strengthening rib promptly to the sheet metal that constitutes quick-witted case, has increased the intensity of box 1, door frame 2 and door 3 respectively, does benefit to and reduces material thickness, weight reduction, reduces the process, reduce cost.

Please continue to refer to fig. 2. The design of general panel beating machine case does not have the door frame, and door direct mount is in the box. If the box body is formed by four walls formed by a metal sheet through multiple folding edges and forms protruding folding edges matched with the door (for water proofing), welding seams at four corners are complex and can only be manually welded, and the multiple folding edges also increase working procedures, which seriously affect the manufacturing efficiency and precision. The design of the case of the embodiment is provided with the door frame 2 as a middle transition body between the door 3 and the case body 1, so that the case body 1 has fewer and simple folded edges forming four walls, the working procedures are reduced, and the welding seams at the four corners are simple and suitable for automatic welding; and four sides of a metal sheet are simultaneously folded by adopting a die to form four side walls of the box body 1, so that the manufacturing efficiency and the manufacturing consistency are greatly improved. The joint of the door frame 2 and the door 3 can be flanged and stretched (for water proofing), and the joint of the door frame 2 and the box body 1 can be simply flanged and buckled, so that the processes are reduced. In addition, the respective hems of the door opening 5 and the door frame 2 are buckled with each other to form a U-shaped gap, so that the U-shaped gap can receive automatically poured adhesive or automatically sprayed plastic powder, the bonding or the baking fixation is facilitated, and the welding influencing the manufacturing speed is reduced. Therefore, the case is provided with the door frame 2, so that the advantages of ensuring precision, reducing working procedures, being suitable for batch and automatic manufacturing, greatly improving manufacturing efficiency and reducing cost are achieved.

The technical features of the present invention which are not described can be implemented by using the prior art, and are not described in detail herein. The above description is not intended to limit the present invention, and any modifications made without departing from the spirit and scope of the present invention are also included in the present invention.

Claims

1. The utility model provides a LED display screen machine case of door frame is exempted from to weld in area which characterized in that: the component parts of the device comprise a box body, a door frame and at least one door; the box body is a rectangular body formed by a metal sheet, and four sides of the metal sheet are folded simultaneously through a die to form four side walls of the box body; a plurality of module installation windows are arranged on the metal sheet in the front of the box body, and the edges of the module installation windows are stretched towards the inward flanging of the box; the rear part of the box body is provided with a rectangular door opening for installing a door frame, and the door opening and the door frame are bonded by an adhesive or are fixed by spraying plastic powder through baking; the door frame is provided with rectangular door holes with the same number as the doors, and the doors are respectively arranged on the door frame and can close or open the door holes.

2. The LED display screen cabinet with the solderless door frame of claim 1, wherein: the edge of the door hole is stretched in an L-shaped flanging mode, and the outermost end of the flanging is turned outwards; the edge of the door is stretched in a spoon-shaped flanging manner, and the outermost end of the flanging is turned inwards in a flanging manner; when the door is closed on the door hole, the flanges at the edges of the door and the door hole are buckled with each other.

3. The LED display screen cabinet with the solderless door frame of claim 1, wherein: the edge of the door opening of the box body is a Z-shaped folded edge, the edge of the door frame matched with the door opening is an L-shaped folded edge, the door frame is buckled on the door opening, the folded edges are mutually buckled to form a U-shaped gap, and the gap is filled with adhesive for bonding or sprayed with plastic powder for baking to fix the door frame on the door opening; and the outermost end of the Z-shaped folded edge at the edge of the door opening is bent and turned upwards, so that the Z-shaped folded edge is not easy to move out when the L-shaped folded edge at the edge of the door frame is buckled on the door frame.

4. The LED display screen cabinet with the solderless door frame of claim 1, wherein: the door is made of metal sheets, and a heat dissipation window with louvers bulging to the outside of the box is arranged on the door, and the whole heat dissipation window including the louvers is formed by rolling, stretching and forming the same metal sheets forming the door.