Screw structure

Abstract

The utility model belongs to the technical field of hardware connecting pieces, and particularly relates to a screw structure. The screw structure comprises a screw body and an anti-loosening ring, the screw body comprises a head part, a connecting part and a limiting part, one end of the connecting part is connected with the head part, the other end of the connecting part is connected with the limiting part, the anti-loosening ring is arranged on the connecting part in a sleeving mode, and a threaded structure is arranged on the outer surface of part of the connecting part in the axial direction of the connecting part. The thread structure and the limiting part are arranged at an interval and form a limiting space, and the anti-loosening ring is located in the limiting space and can abut against the side, facing the connecting part, of the limiting part. According to the screw structure disclosed by the utility model, when at least two pieces to be connected between the head part and the anti-loosening ring are fastened and then need to be disassembled, the anti-loosening ring after the screw structure is loosened can also abut against or limit the pieces to be connected sleeved outside the thread structure, so that the screw is prevented from falling off or falling off; that is, the screw structure can achieve the effect of no loosening.

Description

Technical Field

[0001] The utility model belongs to the technical field of hardware connectors, and in particular relates to a screw structure. Background Art

[0002] Screws are the most common fasteners in daily life. They are tools that use the physical and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually fasten objects and parts. Existing screws are prone to falling or getting lost during disassembly and assembly, which makes it difficult for operators to find suitable screws for re-installation, reducing work efficiency. Utility Model Content

[0003] The purpose of the utility model is to at least solve the problem that the existing screws are easy to fall off during disassembly. This purpose is achieved through the following technical solutions:

[0004] On the one hand, the utility model proposes a screw structure, comprising:

[0005] The screw body includes a head, a connecting portion and a limiting portion, one end of the connecting portion is connected to the head, and the other end of the connecting portion is connected to the limiting portion;

[0006] An anti-loosening ring is sleeved on the connecting part, and a threaded structure is provided on the outer surface of part of the connecting part. Along the axial direction of the connecting part, the threaded structure and the limiting part are spaced apart to form a limiting space. The anti-loosening ring is located in the limiting space and can be abutted against the side of the limiting part facing the connecting part.

[0007] The screw structure of the present invention has one end of the connecting part connected to the head, and the other end of the connecting part connected to the limiting part. The limiting part and the connecting part can pass through the piece to be connected and cooperate with the anti-loosening ring. The side of the anti-loosening ring located in the limiting space away from the limiting part can abut or limit the piece to be connected which is sleeved outside the threaded structure, to prevent the screw structure from falling off from the piece to be connected, and realize the operation of preventing the screw structure from falling off when it is loose from the piece to be connected, to prevent the screw from falling off before installation. When at least two pieces to be connected located between the head and the anti-loosening ring need to be disassembled after being tightened, the anti-loosening ring after the screw structure is loosened can also abut or limit the piece to be connected which is sleeved outside the threaded structure, to prevent the screw from falling off or falling, that is, the screw structure can achieve the effect of not being able to loosen.

[0008] In addition, the screw structure according to the utility model may also have the following additional technical features:

[0009] In some embodiments of the utility model, the anti-loosening ring includes a ring body and an elastic clamping piece, the elastic clamping piece is connected to the inside of the ring body, and the ring body is sleeved outside the connecting part and connected to the connecting part through the elastic clamping piece.

[0010] In some embodiments of the present invention, there are multiple elastic clips, and the multiple elastic clips are arranged at intervals along the circumference of the ring body.

[0011] In some embodiments of the present invention, the elastic clamp is arranged obliquely relative to the ring body, one end of the elastic clamp is connected to the ring body, and the other end of the elastic clamp is inclined toward the center of the ring body.

[0012] In some embodiments of the present invention, the anti-loosening ring is an elastic ring, one side of the elastic ring has an opening structure, and the elastic ring is pressed and sleeved on the connecting portion.

[0013] In some embodiments of the present invention, the screw structure further includes an anti-skid gasket, which is movably sleeved on the connecting portion.

[0014] In some embodiments of the present invention, the anti-slip gasket includes a gasket body and a first convex tooth structure, the gasket body is sleeved on the connecting portion, and the first convex tooth structure is connected to the outer periphery of the gasket body.

[0015] In some embodiments of the present invention, there are multiple first protruding tooth structures, and the multiple first protruding tooth structures are arranged at intervals along the circumference of the gasket body.

[0016] In some embodiments of the present invention, the first protruding tooth structure is inclined relative to the gasket body.

[0017] In some embodiments of the present invention, a second convex tooth structure is provided on the head, the second convex tooth structure is arranged along the circumference of the head, and the second convex tooth structure and the head are an integrally formed structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 The figure schematically shows the assembly structure diagram between the screw structure and the box body in a fastened state according to the embodiment of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0021] Figure 3 The figure schematically shows the assembly structure diagram between the screw structure and the box body in a non-fastened state according to the embodiment of the utility model;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0023] Figure 5 for Figure 1 The overall structural diagram of the screw structure in the middle;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure of the middle screw structure without the anti-loosening ring;

[0025] Figure 7 for Figure 6 A schematic diagram of the structure from another perspective;

[0026] Figure 8 for Figure 5 A schematic diagram of the structure of the anti-slip gasket with a screw structure;

[0027] Fig. 9 for Figure 8 A schematic diagram of the structure from another perspective;

[0028] Fig.10 for Figure 5 A schematic diagram of the structure of the anti-loosening ring of the middle screw structure;

[0029] Fig.11 for Fig.10 A schematic diagram of the structure from another perspective.

[0030] The reference numerals in the accompanying drawings represent the following:

[0031] 100. Screw structure;

[0032] 11. head; 12. connecting part; 121. thread structure; 13. limiting part;

[0033] 20. anti-loosening ring; 21. ring body; 22. elastic clamping piece; 23. through hole; 24. matching space;

[0034] 30. Anti-slip pad; 31. Pad body; 32. First convex tooth structure;

[0035] 200. Cabinet. DETAILED DESCRIPTION

[0036] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0037] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. The terms "comprise", "include", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0039] Screws are the most common fasteners in daily life. They are tools that use the physical and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually fasten objects and parts. Existing screws are prone to falling or getting lost during disassembly and assembly, which makes it difficult for operators to find suitable screws for re-installation, reducing work efficiency.

[0040] In order to solve the above problems, the utility model provides a screw 100. Figure 5 , Figure 6 and Figure 7 As shown, the utility model provides a screw structure 100. The screw structure 100 in the utility model comprises a screw body and an anti-loosening ring 20, wherein the screw body comprises a head 11, a connecting portion 12 and a limiting portion 13.

[0041] One end of the connecting portion 12 is connected to the head portion 11, and the other end of the connecting portion 12 is connected to the limiting portion 13. The anti-loosening ring 20 is detachably mounted on the connecting portion 12. A threaded structure 121 is provided on the outer surface of a portion of the connecting portion 12. Along the axial direction of the connecting portion 12, the threaded structure 121 is spaced apart from the limiting portion 13 to form a limiting space. The anti-loosening ring 20 is located in the limiting space and can abut against the side of the limiting portion 13 facing the connecting portion 12.

[0042] According to the screw structure 100 of the utility model, one end of the connecting portion 12 is connected to the head 11, and the other end of the connecting portion 12 is connected to the limiting portion 13. The limiting portion 13 and the connecting portion 12 can pass through the part to be connected and detachably cooperate with the anti-loosening ring 20. The side of the anti-loosening ring 20 located in the limiting space away from the limiting portion 13 can abut or limit the part to be connected that is sleeved outside the threaded structure 121, preventing the screw structure from falling off from the part to be connected, realizing the operation of preventing the screw structure 100 from falling off when it is loose from the part to be connected, and preventing the screw from falling or slipping before installation.

[0043] When at least two parts to be connected located between the head 11 and the anti-loosening ring 20 need to be disassembled after being tightened, the anti-loosening ring 20 after the screw structure 100 is loosened can abut or limit the parts to be connected that are sleeved outside the threaded structure 121, preventing the screw structure from falling off from the parts to be connected, and avoiding the screw from falling off or falling, that is, the screw structure can achieve the effect of not being able to loosen or fall off.

[0044] In some embodiments of the present invention, the outer diameter of the limiting portion 13 is greater than the outer diameter of the connecting portion 12 , and the outer diameter of the head portion 11 is greater than the outer diameter of the limiting portion 13 .

[0045] In this embodiment, the above arrangement can ensure that the limiting portion 13 abuts against and limits the anti-loosening ring 20 sleeved outside the connecting portion 12 , thereby ensuring the limiting effect of the limiting portion 13 .

[0046] In the first embodiment of the present invention, Fig.10 and Fig.11 As shown, the anti-loosening ring 20 includes a ring body 21 and an elastic clamping member 22. The elastic clamping member 22 is connected to the inside of the ring body 21, and the ring body 21 is sleeved outside the connecting portion 12 and connected to the connecting portion 12 through the elastic clamping member 22.

[0047] The ring body 21 has a through hole 23 therein, and the projection of the elastic clamping piece 22 along the through hole 23 is located inside the through hole 23. The connecting portion 12 is clamped between the elastic clamping pieces 22.

[0048] In this embodiment, the anti-loosening ring 20 is composed of a ring body 21 and an elastic clamping member 22. The ring body 21 is used to be sleeved outside the connecting portion 12, thereby realizing the connection between the anti-loosening ring 20 and the screw. When at least two to-be-connected parts between the head 11 and the anti-loosening ring 20 are in a non-tightened state, the anti-loosening ring 20 can prevent the screw from slipping out of the to-be-connected parts, that is, the effect of preventing the screw from being loosened is achieved.

[0049] Specifically, in the first embodiment of the utility model, the diameter of the through hole 23 of the ring body 21 of the anti-loosening ring 20 is equal to or greater than the outer diameter of the limiting portion 13, so that the anti-loosening ring 20 can be smoothly inserted into the limiting portion 13 and the connecting portion 12 in turn, thereby improving reliability.

[0050] In the first embodiment of the present utility model, there are multiple elastic clamping members 22 , and the multiple elastic clamping members 22 are arranged at intervals along the circumference of the ring body 21 .

[0051] Multiple elastic clips 22 are arranged inside the ring body 21 and are respectively connected to the ring body 21. The connecting part 12 can be passed between the multiple elastic clips 22 and snap-fit ​​with the multiple elastic clips 22 to complete the connection between the anti-loosening ring 20 and the screw. When the screw and the connected part are in a non-tightened state, the screw can be prevented from falling off.

[0052] In the first embodiment of the present invention, Fig.10 As shown, a plurality of elastic clips 22 enclose a matching space 24. In a natural state, the outer diameter of the matching space 24 is smaller than the outer diameter of the connecting portion 12. In this embodiment, since the elastic clips 22 are elastic, when the plurality of elastic connectors are matched with different types of screws, the matching space 24 will change and be altered at any time, thereby improving the versatility and applicability of the anti-loosening ring 20.

[0053] Specifically, in the present embodiment, there are preferably five elastic clamping members 22 , and the five elastic clamping members 22 are spaced and evenly arranged along the inner circumference of the ring body 21 .

[0054] Specifically, in the present embodiment, the structures of the multiple elastic clips 22 are the same, so the mating space 24 surrounded by the multiple elastic clips 22 is a cylindrical space, and the outer diameter of the cylindrical space is smaller than the outer diameter of the connecting part 12, which can ensure that the cylindrical space is snap-fitted with the connecting part 12 of the screw and has a certain connecting force.

[0055] When at least two connected parts between the head 11 and the anti-loosening ring 20 are in a loose state, the anti-loosening ring 20 has a certain clamping force with the connecting part 12, which can prevent the screw from slipping out of the connected parts, that is, the screw cannot be loosened.

[0056] In the first embodiment of the present invention, Fig.11 As shown, the elastic clamping member 22 is arranged obliquely relative to the ring body 21 , one end of the elastic clamping member 22 is connected to the ring body 21 , and the other end of the elastic clamping member 22 is inclined toward the center of the ring body 21 .

[0057] In this embodiment, in the natural state, one end of the plurality of elastic clips 22 is connected to the ring body 21, and the other ends of the plurality of elastic clips 22 face the same side of the center line of the through hole 23. That is, the elastic clips 22 are arranged obliquely relative to the ring body 21, one end of the elastic clips 22 is connected to the ring body 21, and the other end of the elastic clips 22 is inclined toward the center of the ring body 21.

[0058] When the anti-loosening ring 20 cooperates with the connecting part 12, one end of the connecting part 12 can be passed through the ring body 21 in a direction away from the other end of the elastic clip 22, making the process of connecting the two more convenient. Thereafter, when the connecting part 12 cooperates with the elastic clip 22, a clipping effect can be provided, thereby realizing the connection and fixation of the screw and the anti-loosening ring 20.

[0059] In the second embodiment of the utility model, the anti-loosening ring 20 is an elastic ring, one side of the elastic ring has an open structure, and the elastic ring is pressed and sleeved on the connecting part 12. In a natural state, the inner diameter of the elastic ring is smaller than the outer diameter of the connecting part 12. In this embodiment, the anti-loosening ring 20 is an elastic ring structure, one side of the elastic ring has an open structure, and the connecting part of the screw can achieve the sleeve matching of the screw and the anti-loosening ring 20 through the open structure. At the same time, since the inner diameter of the elastic ring is smaller than the outer diameter of the connecting part 12, the snap-fitting between the anti-loosening ring 20 and the screw can be achieved. When at least two to-be-connected parts between the head 11 and the anti-loosening ring 20 are in a non-tightened state, the anti-loosening ring 20 can prevent the screw from slipping out of the to-be-connected parts, that is, the effect of preventing the screw from loosening is achieved.

[0060] In this embodiment, the threaded structure 121 can cooperate with the threaded hole on the part to be connected to achieve a threaded connection. The outer surface of the other part of the connecting portion 12 is a smooth structure, and the smooth structure is provided with an anti-loosening ring 20. The smooth structure will not wear the anti-loosening ring 20 sleeved on the outside, thereby improving reliability. In addition, along the axial direction of the connecting portion 12, the anti-loosening ring 20 is located between the limiting portion 13 and the threaded structure 121, so that the anti-loosening ring 20 will not interfere with the threaded cooperation between the threaded structure 121 and the threaded hole of the part to be connected. At the same time, since the outer diameter of the threaded structure 121 is larger than the outer diameter of the smooth structure, the threaded structure 121 and the limiting portion 13 can also limit the anti-loosening ring 20 in two directions to ensure the positioning of the anti-loosening ring 20.

[0061] Specifically, in this embodiment, the end of the limiting portion 13 away from the head 11 has a chamfered structure, which facilitates guiding the screw into the threaded hole of the part to be connected, improves the convenience of assembling the screw and the part to be connected, and improves the assembly efficiency.

[0062] In some embodiments of the present invention, Figure 8 and Fig. 9 As shown, the screw structure 100 also includes an anti-skid pad 30, which is movably sleeved on the connecting portion 12. In this embodiment, the end of the connecting portion 12 away from the head 11 is connected to the threaded hole on the box body 200, and then the ground wire terminal is inserted between the anti-skid pad 30 and the box body 200, and then the head 11 is tightened until the head 11, the anti-skid pad 30, the ground wire terminal and the box body 200 are respectively abutted in sequence, that is, the connection between the ground wire terminal and the box body 200 is completed. The cross-sectional area of ​​the anti-skid pad 30 is larger than the cross-sectional area of ​​the head 11. During the tightening process of the head 11, the friction area between the head 11 and the box body 200 can be increased, thereby increasing the friction force and the connection force between the screw, the ground wire terminal and the box body 200, and reducing the slipping phenomenon during the tightening process of the head 11.

[0063] In some embodiments of the present invention, Figure 8 and Fig. 9 As shown, the anti-skid pad 30 includes a pad body 31 and a first convex tooth structure 32, the pad body 31 is sleeved on the connecting portion 12, and the first convex tooth structure 32 is connected to the outer periphery of the pad body 31. There are multiple first convex tooth structures 32, and the multiple first convex tooth structures 32 are arranged at intervals along the circumference of the pad body 31. In this embodiment, the multiple first convex tooth structures 32 are respectively connected to the outer periphery of the pad body 31 at intervals, which can further increase the contact area between the overall anti-skid pad 30 and the box body 200, thereby increasing the friction area and the connection force.

[0064] In some embodiments of the present invention, Figure 8 and Fig. 9 As shown, the first convex tooth structure 32 is tilted relative to the gasket body 31. That is, the cross section of the first convex tooth structure 32 is set at an angle greater than zero with the cross section of the gasket body 31. In this embodiment, the first convex tooth structure 32 is tilted with the gasket body 31. During the tightening process of the head 11, the opposite sides of the first convex tooth structure 32 of the anti-slip gasket 30 will respectively abut against the ground wire terminal and the head 11. At the same time, due to the tilted setting of the first convex tooth structure 32, the first convex tooth structure 32 will be deformed to a certain extent, thereby increasing the locking force and improving the reliability of the connection.

[0065] In some embodiments of the utility model, a second convex tooth structure is provided on the head 11, and the second convex tooth structure is arranged along the circumference of the head 11, and the second convex tooth structure and the head 11 are an integrally formed structure. In this embodiment, the head 11 and the anti-slip gasket are integrated into an integral structure, and a plurality of second convex tooth structures are provided, all of which are inclined relative to the head 11. The plurality of second convex tooth structures can also increase the contact area between the head 11 and the box body 200, thereby increasing the friction and connection force between the screw, the ground wire terminal and the box body 200, and reducing the slippage phenomenon during the tightening process of the head 11.

[0066] Further, in this embodiment, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two parts to be connected are provided, one is the box 200, and the other is the ground wire terminal. The ground wire terminal needs to be fixed on the box 200. The operator first inserts the end of the screw away from the head 11 through the threaded hole of the box 200, and then sets the anti-loosening ring 20 on the connecting part 12 and between the threaded structure 121 of the connecting part 12 and the limiting part 13. Then, the ground wire terminal is inserted outside the connecting part 12 and located between the anti-slip pad 30 and the box 200, and then the operator tightens the head 11 until the head 11, the anti-slip pad 30, the ground wire terminal and the box 200 are abutted in sequence, that is, the connection between the ground wire terminal and the box 200 is completed.

[0067] When the screw needs to be removed or loosened later, the operator only needs to loosen the head 11 to complete the disassembly of the box 200 and the ground wire terminal. At this time, since the anti-loosening ring 20 is always mounted on the end of the connecting part 12 away from the head 11, the screw will be limited from sliding out of the threaded hole of the box 200, thereby preventing the screw from falling off or falling off when loosened, thereby achieving the effect of preventing the screw from falling off.

[0068] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A screw structure (100), characterized in that: include: A screw body, the screw body comprising a head (11), a connecting portion (12) and a limiting portion, one end of the connecting portion (12) being connected to the head (11), and the other end of the connecting portion (12) being connected to the limiting portion (13); An anti-loosening ring (20) is sleeved on the connecting portion (12); a threaded structure (121) is provided on the outer surface of a portion of the connecting portion (12); along the axial direction of the connecting portion (12), the threaded structure (121) and the limiting portion (13) are spaced apart to form a limiting space; the anti-loosening ring (20) is located in the limiting space and can abut against a side of the limiting portion (13) facing the connecting portion (12).

2. The screw structure according to claim 1, characterized in that: The anti-loosening ring (20) comprises a ring body (21) and an elastic clamping piece (22), wherein the elastic clamping piece (22) is connected to the inside of the ring body (21), and the ring body (21) is sleeved outside the connecting portion (12) and connected to the connecting portion (12) via the elastic clamping piece (22).

3. The screw structure according to claim 2, characterized in that: The elastic clamping parts (22) are multiple in number, and the multiple elastic clamping parts (22) are arranged at intervals along the circumference of the ring body (21).

4. The screw structure according to claim 2, characterized in that: The elastic clamping piece (22) is arranged obliquely relative to the ring body (21); one end of the elastic clamping piece (22) is connected to the ring body (21); and the other end of the elastic clamping piece (22) is inclined toward the center of the ring body (21).

5. The screw structure according to claim 1, characterized in that: The anti-loosening ring (20) is an elastic ring, one side of which has an opening structure, and the elastic ring is pressed and sleeved on the connecting portion (12).

6. The screw structure according to claim 1, characterized in that: The screw structure (100) further comprises an anti-skid gasket (30), wherein the anti-skid gasket (30) is movably sleeved on the connecting portion (12).

7. The screw structure according to claim 6, characterized in that: The anti-slip gasket (30) comprises a gasket body (31) and a first convex tooth structure (32); the gasket body (31) is sleeved on the connecting portion (12); and the first convex tooth structure (32) is connected to the outer periphery of the gasket body (31).

8. The screw structure according to claim 7, characterized in that: The number of the first protruding tooth structures (32) is multiple, and the multiple first protruding tooth structures (32) are arranged at intervals along the circumference of the gasket body (31).

9. The screw structure according to claim 7, characterized in that: The first protruding tooth structure (32) is arranged obliquely relative to the gasket body (31).

10. The screw structure according to claim 1, characterized in that: The head (11) is provided with a second convex tooth structure, the second convex tooth structure is arranged along the circumference of the head (11), and the second convex tooth structure and the head (11) are an integrally formed structure.

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