Anti-loosening assembly, anti-loosening device and fitness equipment

Abstract

The utility model discloses an anti-loosening assembly, an anti-loosening device and fitness equipment. The anti-loosening assembly comprises a fixing shaft, a gasket and a nut. The fixing shaft is provided with an abutting face and a screw protruding out of the abutting face, the screw is provided with a threaded section and two first rotation stopping faces deviating from each other, and the screw is suitable for penetrating through the via hole; the gasket is suitable for being supported by the abutting face and provided with a through hole, the through hole is suitable for being arranged on the screw in a sleeved mode and provided with a second rotation stopping face matched with the first rotation stopping face in a rotation stopping mode, and due to the fact that the number of the first rotation stopping face and the number of the second rotation stopping face are two, compared with only one, the gasket can be better clamped on the screw, and rotation of the gasket is prevented. The nut and the gasket are suitable for being located at the two ends of the through hole correspondingly, and the nut is suitable for being in threaded fit with the threaded section so that the gasket and the nut can clamp the rotating piece, and therefore the rotating piece is installed. When the rotating piece rotates, the gasket cannot rotate along with the rotating piece due to the action of the rotation stopping face, the gasket is kept still, the nut cannot rotate, and therefore it is guaranteed that the structure still has the tight anti-loosening effect.

Description

Technical Field

[0001] This utility model relates to the field of anti-loosening structures, specifically to an anti-loosening component, an anti-loosening device, and fitness equipment. Background Technology

[0002] An anti-loosening structure is a mechanical design used to prevent fasteners (such as bolts, nuts, screws, etc.) from loosening spontaneously due to vibration, impact, or dynamic loads. Its core principle is to counteract the tendency to loosen by increasing frictional resistance, mechanical interference, or deformation locking. Commonly used anti-loosening structures on fitness equipment include nylon anti-loosening nuts, double nuts, and the addition of spring washers. However, these methods are only relatively effective for static structures and are ineffective for structures that require rotation. Therefore, it is necessary to design an anti-loosening structure suitable for rotating activities to solve the problem of structural loosening caused by prolonged rotation. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems existing in the background art or to provide a material basis for overcoming the above-mentioned defects or problems existing in the background art, and to provide an anti-loosening component, an anti-loosening device and a fitness equipment.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Option 1: An anti-loosening component suitable for clamping a rotating part, wherein the rotating part is provided with a through hole, including...

[0006] A fixed shaft has an abutment surface and a screw protruding from the abutment surface. The screw has a threaded section and two mutually opposing first anti-rotation surfaces. The screw is adapted to pass through the through hole.

[0007] A gasket, adapted to be supported by the rotating member, has a through hole, the through hole being adapted to be fitted onto the screw and having a second anti-rotation surface that engages with the first anti-rotation surface to prevent rotation;

[0008] A nut, located above the washer and adapted to engage with the threaded section, so that the washer and the abutment surface are adapted to clamp the rotating member.

[0009] Option 2, based on Option 1, wherein the threaded segment is a fine thread.

[0010] Option 3, based on Option 1, is a lock nut.

[0011] Option 4, based on Option 1, further includes a flat washer, which is adapted to be fitted onto the screw and sit on the abutment surface, with the side of the flat washer facing away from the abutment surface abutting against the rotating member 5.

[0012] Option 5, based on Options 1 to 4, involves the screw's dimensions gradually increasing in the direction approaching the contact surface.

[0013] Option 6, based on Option 5, has a screw taper of 0.3°-1°.

[0014] Option 7, an anti-loosening device, comprising a rotating component and an anti-loosening assembly as described in any one of Options 1 to 6.

[0015] Option 8, a fitness device, includes a rotating component and an anti-loosening component as described in any one of Options 1 to 6.

[0016] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0017] 1. In Scheme 1 and its preferred embodiments, an anti-loosening component is suitable for clamping a rotating part, the rotating part is provided with a through hole, and the anti-loosening component includes a fixed shaft, a washer, and a nut.

[0018] The fixed shaft has an abutment surface and a screw protruding from the abutment surface. The screw has a threaded section and two opposing first anti-rotation surfaces. The screw is suitable for passing through a through hole. The washer is suitable for being supported by the rotating part. It has a through hole, which is suitable for being fitted onto the screw and has a second anti-rotation surface that cooperates with the first anti-rotation surface to prevent rotation. Since there are two first and second anti-rotation surfaces, compared to only one, the washer can be better clamped onto the screw to prevent the washer from rotating.

[0019] The nut is positioned above the washer and is designed to engage with the threaded section to clamp the rotating component between the washer and the mating surface, thus enabling the installation of the rotating component. When the rotating component rotates, the washer remains stationary due to the anti-rotation surface, preventing it from rotating with the component. Consequently, the nut also remains stationary, ensuring the structure maintains its tight, anti-loosening function.

[0020] 2. In Scheme 2 and its preferred embodiments, the threaded section is a fine thread, which has a better anti-loosening effect compared to a coarse thread.

[0021] 3. In Scheme 3 and its preferred embodiments, the nut is a lock nut, which has a better lock-locking effect than a regular nut.

[0022] 4. In Scheme 4 and its preferred embodiments, a flat washer is also included. The flat washer is suitable for being sleeved on the screw and located on the abutting surface. The side of the flat washer away from the abutting surface abuts against the rotating part. The flat washer has the functions of anti-slip, wear-resistant and noise-eliminating.

[0023] 5. In Scheme 5 and its preferred embodiments, the size of the screw gradually increases along the direction close to the contact surface to facilitate the installation of the gasket and flat washer.

[0024] 6. In Scheme 6 and its preferred embodiments, the taper of the screw is 0.3°-1° to reduce the difficulty of processing and ensure the threaded fit between the threaded section and the nut.

[0025] 7. In Scheme 7 and its preferred embodiments, an anti-loosening device includes a rotating component and the aforementioned anti-loosening assembly, and has the beneficial effects brought about by the aforementioned anti-loosening assembly.

[0026] 8. In Scheme 8 and its preferred embodiments, a fitness device includes a rotating component and the aforementioned anti-loosening component, and has the beneficial effects brought about by the aforementioned anti-loosening component. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the anti-loosening device in Example 1;

[0029] Figure 2 This is an exploded view of the anti-loosening device in Example 1;

[0030] Figure 3 This is a perspective view of the fixed shaft in Embodiment 1;

[0031] Figure 4 This is a perspective view of the gasket in Example 1;

[0032] Figure 5 This is a perspective view of the rotating component in Example 1.

[0033] Explanation of key figure labels:

[0034] Fixed shaft 1; abutment surface 11; screw 12; threaded section 121; first anti-rotation surface 122; washer 2; through hole 21; second anti-rotation surface 211; nut 3; flat washer 4; round hole 41; rotating part 5; through hole 51; mounting groove 52; sitting surface 53; first direction 6; Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0037] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of the invention.

[0038] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0039] In the claims, description and accompanying drawings of this utility model, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0040] refer to Figures 1-5 An anti-loosening device includes a rotating component 5 and an anti-loosening assembly. This anti-loosening device is used in fitness equipment.

[0041] refer to Figure 5 The rotating member 5 is provided with a through hole 51 and a mounting groove 52. The through hole 51 extends along the first direction 6, with one end opening into the groove wall of the mounting groove 52 and the other end opening into the surface of the rotating member 5. The mounting groove 52 opens in a direction perpendicular to the first direction 6, and the groove wall of the mounting groove 52 forms an upward-facing resting surface 53. The rotating member 5 is adapted to rotate about an axis parallel to the first direction 6.

[0042] refer to Figure 1 , Figure 2 The anti-loosening component is suitable for clamping the rotating part 5. The anti-loosening component includes a fixed shaft 1, a washer 2, a nut 3, and a flat washer 4.

[0043] refer to Figure 3 The fixed shaft 1 is provided with an abutment surface 11 and a screw 12. The abutment surface 11 is a plane and is formed by a flange that protrudes radially from the screw 12. The abutment surface 11 is perpendicular to the first direction 6.

[0044] The screw 12 protrudes from the abutment surface 11 and extends along the first direction 6. The screw 12 is adapted to pass through the through hole 51, and the size of the screw 12 gradually increases in the direction close to the abutment surface 11. Specifically, the taper of the screw 12 is 0.3°-1°.

[0045] The screw 12 has a threaded section 121 and two opposing first anti-rotation surfaces 122, giving the screw 12 a double-D shape. The threaded section 121 is cut into two parts and connected by the two first anti-rotation surfaces 122. The threaded section 121 has a fine-pitch thread. The manufacture of fine-pitch threads is a common technique in the mechanical field, as described in GB5785 and GB5786, and will not be elaborated upon here. The first anti-rotation surfaces 122 are parallel to the first direction 6. The length of the first anti-rotation surfaces 122 can be the same as or less than the length of the threaded section 121, depending on the position of the washer 2.

[0046] refer to Figure 2 , Figure 3 The flat pad 4 is annular in shape, with both its upper and lower surfaces being flat, and a circular hole 41 in the center. The flat pad 4 is suitable for being fitted onto the screw 12 and resting on the abutment surface 11, with the side of the flat pad 4 facing away from the abutment surface 11 abutting against the rotating component 5. In this embodiment, the flat pad 4 is a POM plastic flat pad 4, which has good wear resistance, high rigidity, and anti-slip, wear-resistant, and noise-eliminating functions.

[0047] The gasket 2 is suitable for being supported by the sitting surface 53. The gasket 2 is annular in shape, and its upper and lower surfaces are both flat. The gasket 2 is provided with a through hole 21. The through hole 21 is suitable for being fitted onto the screw 12 and is provided with a second anti-rotation surface 211 that cooperates with the first anti-rotation surface 122 to prevent rotation. The hole wall of the through hole 21 is formed by two arc surfaces and two second anti-rotation surfaces 211. The two arc surfaces are connected by the two second anti-rotation surfaces 211.

[0048] refer to Figure 1 The nut 3 and washer 2 are located above the through hole 51 and are adapted to engage with the threaded section 121 so that the flat washer 4 and washer 2 clamp the rotating part 5. Since the threaded section 121 has a fine thread, the nut 3 also has a fine thread that matches the threaded section 121. The nut 3 is a lock nut, with a special engineering plastic permanently attached to the thread. During the tightening process, the engineering plastic is squeezed and generates a strong reaction force, which greatly increases the friction between the internal and external threads and provides absolute resistance to vibration, thereby achieving the lock-loosening effect. In this embodiment, the nut 3 is a nylon lock nut.

[0049] During installation, first, place the flat washer 4 onto the screw 12, so that the flat washer 4 rests on the abutment surface 11. Then, install the rotating part 5, which rests on the flat washer 4. Let the screw 12 pass through the through hole 51 and extend into the mounting groove 52. Then, install the washer 2, so that the second anti-rotation surface 211 of the washer 2 mates with the first anti-rotation surface 122 on the screw 12. The nut 3 extends into the mounting groove 52 through the opening of the mounting groove 52 and engages with the screw 12 threaded into the mounting groove 52 until the nut 3 can no longer engage with the screw 12 threadedly. At this point, the washer 2 and the flat washer 4 clamp the rotating part 5.

[0050] When in use, when the rotating part 5 rotates around the first axis, the washer 2 is prevented from rotating when the rotating part 5 rotates because the second anti-rotation surface 211 is engaged with the first anti-rotation surface 122 on the screw 12. This prevents the washer 2 from rotating and the nut 3 from rotating, thus achieving anti-loosening. In addition, the anti-loosening effect is further improved by using anti-loosening nuts, fine threads, etc.

[0051] Compared with the prior art, this embodiment has the following beneficial effects:

[0052] In one exemplary embodiment, an anti-loosening component is provided, which is suitable for clamping a rotating member 5. The rotating member 5 is provided with a through hole 51. The anti-loosening component includes a fixed shaft 1, a washer 2, and a nut 3.

[0053] The fixed shaft 1 has an abutment surface 11 and a screw 12 protruding from the abutment surface 11. The screw 12 has a threaded section 121 and two mutually opposing first anti-rotation surfaces 122. The screw 12 is adapted to pass through the through hole 51. The washer 2 is adapted to be supported by the rotating part. It has a through hole 21. The through hole 21 is adapted to be sleeved on the screw 12 and has a second anti-rotation surface 211 that cooperates with the first anti-rotation surface 122 to prevent rotation. Since there are two first anti-rotation surfaces 122 and two second anti-rotation surfaces 211, compared to only one, the washer 2 can be better clamped on the screw 12 to prevent the washer 2 from rotating.

[0054] Nut 3 is located above washer 2 and is adapted to engage with threaded section 121 so that washer 2 and abutment surface 11 are adapted to clamp rotating part 5, thereby realizing the installation of rotating part 5. When rotating part 5 rotates, washer 2 will not rotate with rotating part 5 due to the action of anti-rotation surface, and washer 2 will remain stationary. Nut 3 will also not rotate, thus ensuring that the structure still has a tight anti-loosening function.

[0055] In one exemplary embodiment, the threaded section 121 is a fine thread, which has a better anti-loosening effect compared to a coarse thread.

[0056] In one exemplary embodiment, the nut 3 is a lock nut, which has a better lock-loosening effect than a regular nut 3.

[0057] In one exemplary embodiment, a flat washer 4 is also included. The flat washer 4 is adapted to be sleeved on the screw 12 and sit on the abutment surface 11. The side of the flat washer 4 facing away from the abutment surface 11 abuts against the rotating member 5. The flat washer 4 has the functions of anti-slip, wear-resistant and noise-eliminating.

[0058] In one exemplary embodiment, the size of the screw 12 gradually increases in the direction close to the abutment surface 11 to facilitate the installation of the gasket 2 and the flat gasket 4.

[0059] In one exemplary embodiment, the taper of the screw 12 is 0.3°-1° to reduce the difficulty of machining and to ensure the threaded engagement between the threaded section 121 and the nut 3.

[0060] In one exemplary embodiment, an anti-loosening device includes a rotating member 5 and the aforementioned anti-loosening component, and has the beneficial effects brought about by the aforementioned anti-loosening component.

[0061] In one exemplary embodiment, a fitness device includes a rotating member 5 and the aforementioned anti-loosening component, and has the beneficial effects brought about by the aforementioned anti-loosening component.

[0062] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. An anti-loosening assembly suitable for clamping a rotating member (5), said rotating member (5) having a through hole (51), characterized in that: include A fixed shaft (1) is provided with an abutment surface (11) and a screw (12) protruding from the abutment surface (11). The screw (12) is provided with a threaded section (121) and two mutually opposing first anti-rotation surfaces (122). The screw (12) is adapted to pass through the through hole (51). A gasket (2) adapted to be supported by the rotating member (5) has a through hole (21) adapted to be fitted onto the screw (12) and has a second anti-rotation surface (211) that cooperates with the first anti-rotation surface (122) to prevent rotation. A nut (3) is located above the washer (2) and is adapted to be threaded into the threaded section (121) so that the washer (2) and the abutment surface (11) are adapted to clamp the rotating member (5).

2. The anti-loosening component as described in claim 1, characterized in that: The threaded section (121) is a fine thread.

3. The anti-loosening component as described in claim 1, characterized in that: The nut (3) is a lock nut.

4. The anti-loosening component as described in claim 1, characterized in that: It also includes a flat washer (4), which is adapted to be fitted onto the screw (12) and sit on the abutment surface (11), and the side of the flat washer (4) facing away from the abutment surface (11) abuts against the rotating member (5).

5. An anti-loosening component as described in any one of claims 1-4, characterized in that: The size of the screw (12) gradually increases in the direction close to the abutment surface (11).

6. The anti-loosening component as described in claim 5, characterized in that: The taper of the screw (12) is 0.3°-1°.

7. An anti-loosening device, characterized in that: It includes a rotating component (5) and an anti-loosening assembly as described in any one of claims 1-6.

8. A fitness device, characterized in that: It includes a rotating component (5) and an anti-loosening assembly as described in any one of claims 1-6.

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