A screw gasket integrated structure for back plate side door and back plate

Abstract

The utility model discloses a screw gasket integrated structure for backboard side door, backboard, screw gasket integrated structure includes: backboard's side door body, is equipped with the mounting hole of passing through on side door body, screw subassembly, screw subassembly includes big head nut, light pole section and thread section, light pole section and thread section coaxial formation in big head nut's same side, light pole section is located between big head nut and thread section, and the thread section is used for with backboard's fixed screw hole cooperation and is connected, the diameter of light pole section is less than the outer thread of thread section major diameter, and light pole section passes through side door body's mounting hole, gasket subassembly, the inner wall of gasket subassembly is close -fitted with the outer wall of light pole section, and two end faces of gasket subassembly are respectively with side door body and thread section abut. The utility model can make the side door, screw and gasket keep the connection state when disassembling, do not have the disintegration.

Description

Technical Field

[0001] This utility model relates to the field of back panel technology, and in particular to an integrated screw and washer structure for a back panel side door and a back panel. Background Technology

[0002] In the production and maintenance of advertising machines, the disassembly and assembly of the rear side door is a common operation, and its fastening reliability and ease of disassembly and assembly directly affect the equipment maintenance efficiency. Currently, the fastening of the rear side door of advertising machines mostly adopts the traditional structure of screws and washers. However, improved solutions for integrated fasteners have emerged in existing technologies. For example, the technical solution disclosed in Chinese Utility Model Patent CN216343328U discloses a large-head screw with an integrated washer. The technical solution includes a large-head nut, on one side of which is formed a screw post, and on the other side, it is formed with a cross or slotted tightening pattern. The screw post is located at the center of the large-head nut, and a spiral groove is provided around the screw post on one side of the large-head nut. The area occupied by the spiral groove is not less than half and less than two-thirds of the circumference of the large-head nut. The purpose of this design is to improve the integrity and sealing of the fastener through the integrated structure of the screw and washer, adapt to the working conditions of larger fixing screw holes, reduce installation gaps, and prevent loosening. However, in the process of disassembling and assembling the side door, the side door body is still easily separated from the "screw-washer" assembly, resulting in the loss of screws or washers, requiring secondary matching and reassembly, which seriously affects maintenance efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an integrated screw and washer structure for a back panel side door, which enables the side door, screw and washer to remain connected during disassembly and does not disintegrate.

[0004] To solve the above-mentioned technical problems, the first aspect of this utility model discloses an integrated screw washer structure for a back panel side door, comprising: The back panel has a side door body, on which a through mounting hole is provided; A screw assembly, comprising a large-head nut, a smooth section, and a threaded section, wherein the smooth section and the threaded section are coaxially formed on the same side of the large-head nut, the smooth section is located between the large-head nut and the threaded section, and the threaded section is used to mate with the fixing screw hole of the back plate; the diameter of the smooth section is smaller than the major diameter of the external thread of the threaded section, and the smooth section passes through the mounting hole of the side door body; The gasket assembly has its inner wall tightly attached to the outer wall of the smooth rod section, and its two end faces abut against the side door body and the threaded section, respectively.

[0005] As an optional implementation, the gasket assembly is an open-type gasket.

[0006] As another alternative implementation, the opening size of the gasket assembly is 0.2-0.4 mm smaller than the diameter of the optical rod segment.

[0007] As another alternative implementation, the gasket assembly is made of acetal alloy.

[0008] As another optional implementation, the length ratio of the smooth rod section to the threaded section is 1:1.

[0009] As another optional implementation, the optical rod segment is clearance-fitted with the mounting hole.

[0010] The second aspect of this utility model discloses a back panel, which includes an integrated structure of a side door body and a screw washer as described in the first aspect of this utility model.

[0011] Compared with the prior art, the embodiments of this utility model have the following beneficial effects: Compared to the shortcomings of traditional split structures, where "screws, side doors, and gaskets are easily separated and lost after loosening, requiring re-matching during secondary installation," this utility model structure, through specific dimensions and assembly design, forms a stable integrated connection between the back panel side door body, screw assembly, and gasket assembly: the bare rod section passes through the mounting hole of the side door body, the inner wall of the gasket assembly is in close contact with the outer wall of the bare rod section, and both ends abut against the side door body and the threaded section respectively. The three parts always maintain a fixed relative position during disassembly and assembly. Even if the screw assembly is disassembled (the threaded section is removed from the screw hole of the back panel), the parts will not fall apart, effectively avoiding the risk of losing parts and significantly reducing the time cost and adaptation difficulty of secondary assembly. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a back panel side door with an integrated screw washer structure disclosed in an embodiment of this utility model; Figure 2 This is a disclosure of the embodiments of this utility model. Figure 1 A magnified view of a portion of the image; Figure 3 This is a disclosure of the embodiments of this utility model. Figure 1 Another enlarged partial schematic diagram; Figure 4 This is a schematic diagram of the screw assembly disclosed in an embodiment of the present utility model; Figure 5 This is a top view of the gasket assembly disclosed in an embodiment of the present invention. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example 1 See Figures 1-5 This utility model discloses an integrated screw washer structure for a back panel side door, comprising: The side door body 1 of the back panel S has a through mounting hole 11. Screw assembly 2 includes a large-head nut 21, a smooth section 23, and a threaded section 22. The smooth section 23 and the threaded section 22 are coaxially formed on the same side of the large-head nut 21. The smooth section 23 is located between the large-head nut 21 and the threaded section 22. The threaded section 22 is used to mate with the fixing screw hole 4 of the back plate S. The diameter of the smooth section 23 is smaller than the major diameter of the external thread of the threaded section 22. The smooth section 23 passes through the mounting hole 11 of the side door body 1. Gasket assembly 3, the inner wall of the gasket assembly 3 is in close contact with the outer wall of the light rod section 23, and the two end faces of the gasket assembly 3 abut against the side door body 1 and the threaded section 22 respectively.

[0016] Compared to the shortcomings of traditional split structures, where "screws, side doors, and gaskets are easily separated and lost after loosening, requiring re-matching during secondary installation," this utility model structure, through specific dimensions and assembly design, forms a stable integrated connection between the back panel S, side door body 1, screw assembly 2, and gasket assembly 3: the bare rod section 23 passes through the mounting hole 11 of the side door body 1, the inner wall of the gasket assembly 3 is in close contact with the outer wall of the bare rod section 23, and both ends abut against the side door body 1 and the threaded section 22, respectively. The three components always maintain a fixed relative position during disassembly and assembly. Even if the screw assembly 2 is disassembled (the threaded section 22 is removed from the fixing screw hole 4 of the back panel S), the components will not fall apart, effectively avoiding the risk of losing parts and significantly reducing the time cost and adaptation difficulty of secondary assembly.

[0017] Optionally, the gasket assembly 3 is an open-type gasket.

[0018] Alternatively, the opening size of the gasket assembly 3 is 0.2-0.4 mm smaller than the diameter of the optical rod segment 23.

[0019] Alternatively, the gasket assembly 3 may be made of acetal alloy.

[0020] Optionally, the length ratio of the smooth rod segment 23 to the length of the threaded segment 22 is 1:1.

[0021] Further optionally, the optical rod segment 23 is clearance-fitted with the mounting hole 11.

[0022] Optionally, the threaded section 22 is manufactured using an extrusion forming process, and the pitch of the threaded section 22 is 0.8-1.2 mm.

[0023] Optionally, the large-head nut 21 is provided with anti-slip texture on the side away from the smooth rod section 23. The anti-slip texture is cross-shaped, straight, or plum blossom-shaped, and the depth of the anti-slip texture is 0.3-0.5mm.

[0024] Alternatively, the acetal may be made of polyoxymethylene (POM) and the gasket assembly 3 may have a Shore hardness of 85-90D.

[0025] Optionally, the connection between the smooth rod section 23 and the large-head nut 21 is provided with an arc transition portion, the radius of which is 0.2-0.3mm.

[0026] Optionally, the clearance between the optical rod section 23 and the mounting hole 11 is 0.05-0.1 mm.

[0027] Assembly process: 1. Pre-fixing of gasket: Apply a slight external force to the opening of the gasket assembly (using the tensile properties of POM material) and fit it onto the smooth section of the screw assembly. After the external force is removed, the gasket assembly shrinks and retracts through the opening to fit tightly against the outer wall of the smooth section (without loosening), forming a "screw-gasket pre-assembly". 2. Inserting the side door body: With the threaded section of the "screw-washer pre-assembly" facing the mounting hole of the side door body, the smooth section passes through along the axis of the mounting hole until one end face of the washer assembly abuts against the surface of the side door body. 3. Connect the back plate: Align the threaded section with the M6 ​​fixing screw hole on the back plate, apply torque through the cross-shaped anti-slip pattern of the big-head nut (manual initial tightening can be done without additional tools), so that the extruded threaded section fits tightly with the fixing screw hole, and finally the other end face of the gasket assembly abuts against the stepped surface of the threaded section (the junction of the smooth rod section and the threaded section), completing the assembly.

[0028] Example 2 This utility model discloses a back panel side door, including the screw and washer integrated structure as described in Embodiment 1.

[0029] The contents disclosed in this utility model embodiment are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. An integrated screw washer structure for a back panel side door, characterized in that, include: The back panel has a side door body, on which a through mounting hole is provided; A screw assembly, comprising a large-head nut, a smooth section, and a threaded section, wherein the smooth section and the threaded section are coaxially formed on the same side of the large-head nut, the smooth section is located between the large-head nut and the threaded section, and the threaded section is used to mate with the fixing screw hole of the back plate; the diameter of the smooth section is smaller than the major diameter of the external thread of the threaded section, and the smooth section passes through the mounting hole of the side door body; The gasket assembly has its inner wall tightly attached to the outer wall of the smooth rod section, and its two end faces abut against the side door body and the threaded section, respectively.

2. The screw washer integrated structure according to claim 1, characterized in that, The gasket assembly is an open-type gasket.

3. The screw washer integrated structure according to claim 2, characterized in that, The opening size of the gasket assembly is 0.2-0.4 mm smaller than the diameter of the optical rod section.

4. The screw washer integrated structure according to claim 1, characterized in that, The gasket assembly is made of acetal steel.

5. The screw washer integrated structure according to claim 1, characterized in that, The length ratio of the smooth section to the threaded section is 1:

1.

6. The screw washer integrated structure according to claim 1, characterized in that, The optical rod section is clearance-fitted with the mounting hole.

7. A backplate, characterized in that, It includes the integrated structure of the side door body and screw washer as described in any one of claims 1 to 6.

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