Anti-loosening bolt with loosening warning function

Abstract

The present invention discloses an anti-loosening bolt with a loosening warning function, which relates to the field of automobile accessories. The structure thereof comprises a nut, a screw rod being fixedly connected to the bottom end, the nut being provided with a cavity opening upward, a warning device being provided in the cavity of the nut, and the warning device giving a corresponding prompt when the bolt is loosened. In order to give an obvious prompt when the bolt is loosened, the present invention comprises a nut being provided with a cavity opening upward, a warning device being provided in the cavity of the nut, and in order to allow two movable plates to separate on opposite sides after being subjected to the force of a top block, opposite sides of the two movable plates close to the top end are arranged to be in an arc shape, and the top end of the top block close to the outer wall is a cone, and in order to prevent loosening, the bottom block further comprises a gasket, and protrusions are evenly distributed on the bottom end of the gasket, and in order to achieve a better anti-loosening effect, the screw rod comprises a tightening rod, a groove and a second slideway.

Description

Technical Field

[0001] The invention relates to the technical field of fasteners, and in particular to an anti-loosening bolt with a loosening warning function. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is matched with a nut. A type of fastener consisting of a head and a screw (a cylinder with external threads), which must be matched with a nut to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. The existing bolts will become loose due to vibration, movement and other logistics movements when tightened, and there is even a risk of falling off, which requires careful observation to be discovered. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an anti-loosening bolt with a loosening warning function. Compared with the prior art, in order to provide an obvious prompt when the bolt is loose, the present invention is provided with a cavity with an opening upward, and an early warning device is provided in the nut cavity. In order to make it easier for the two movable plates to slide to the non-opposite side, the opposite side of the two movable plates close to the bottom end and the top of the top block close to the outer wall are arranged at a 90° angle. In order to prevent loosening, the bottom block also includes a gasket, and protrusions are evenly distributed on the bottom end of the gasket. In order to have a better anti-loosening effect, the screw includes a tightening rod, a groove and a second slide.

[0004] The present invention is achieved through the following technical scheme: an anti-loosening bolt with a loosening warning function, whose structure includes a nut, a screw rod is fixedly connected to the bottom end of the nut, the nut is provided with a cavity opening upward, and an early warning device is provided in the nut cavity. When the bolt is loose, the early warning device will give a corresponding prompt.

[0005] Preferably, the warning device comprises a top cover, a movable plate, a top plate, a first spring and a second spring, the movable plates are two, the top cover is detachably connected to the top end of the nut, and limit blocks are arranged on both sides of the bottom end of the top cover near the cavity, and the first slide is arranged on the other two sides of the bottom end of the top cover near the cavity, and a hole is arranged on the top end of the top cover, the two movable plates are slidably connected to the first slide, and the first spring is connected between the two non-opposite sides of the two movable plates and the two ends of the first slide, the top end of the top plate is arranged at the bottom of the nut cavity, the second spring is connected between the top of the top plate near the two ends and the top cover, the top end of the top plate is arranged at the top, and the bottom end of the top plate near the two ends is arranged at the bottom of the top plate, the top plate, the top block and the bottom block are an integrated structure, the inner wall of the hole is aligned with the outer wall of the top block, and the two ends of the nut cavity near the bottom of the inner wall are provided with through grooves, and the inner wall of the through groove is corresponding to the outer wall of the bottom block.

[0006] Preferably, the two movable panels are red.

[0007] Preferably, the top block is green.

[0008] Preferably, grooves are provided on opposite sides of the two movable plates, opposite sides of the two movable plates close to the top are configured to be in an arc shape, and the top of the top block close to the outer wall is a cone.

[0009] Preferably, the distance from the top of the top block to the top of the top plate is the same as the distance from the bottom of the bottom block to the bottom of the top plate, and the distance from the bottom of the first slideway to the bottom of the nut is the same as the distance from the bottom of the top plate to the bottom of the bottom block.

[0010] Preferably, the early warning of the bolt includes the following states:

[0011] Initial state: the top cover is fixed to the top of the nut, the top plate slides toward the bottom of the nut cavity under the pressure of the first spring, the bottom block passes through the through slot and extends to the bottom of the nut, the two movable plates are pressed by the second spring, the two movable plates fit on opposite sides, and only the two movable plates can be observed through the hole;

[0012] Tightened state: the bottom block slides toward the top cover through the slot due to the reverse thrust of the cross section of the fixed object, the first spring is compressed by the force of the top plate, the bottom end of the nut fits with the cross section of the fixed object, the bottom end of the bottom block fits with the cross section of the fixed object, the two movable plates move toward the two limit blocks along the first slideway respectively due to the force of the top block, the second spring is compressed by the force of the movable plate, the top end of the top block is embedded in the hole, and the top block can only be observed through the hole;

[0013] Warning status: The bolts and the fixture are loose, the bottom end of the nut is separated from the cross-section of the fixture, the top plate slides toward the bottom end of the nut cavity along the inner wall of the nut cavity under the force of the first spring, the bottom block slides toward the cross-section of the fixture through the inner wall of the through groove, the top block slides toward the bottom end of the nut with the top plate, and the two movable plates slide under the pressure of the second spring. The two movable plates and the top block can be observed through the hole.

[0014] Preferably, the bottom block further comprises a gasket, which is detachably connected to the bottom end of the bottom block and is made of rubber.

[0015] Preferably, protrusions are evenly distributed on the bottom end of the gasket.

[0016] Preferably, a groove is provided at the bottom end of the screw, a fastening rod is slidably provided in the groove, an extension portion is provided at the top end of the fastening rod, the middle portion of the extension portion can be bent outward, and the bolt is provided with a second slideway passing through both ends of the screw and the bottom end of the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an anti-loosening bolt with a loosening warning function;

[0018] Figure 2 A top view of an anti-loosening bolt with a loosening warning function

[0019] Figure 3 An exploded view of an anti-loosening bolt with a loosening warning function;

[0020] Figure 4 It is a cross-sectional view of an anti-loosening bolt with a loosening warning function;

[0021] Figure 5 for Figure 4 Cross-sectional view of bolts in tightened state;

[0022] Figure 6 Schematic diagram of the structure of the gasket. DETAILED DESCRIPTION

[0023] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0024] Embodiment 1:

[0025] like Figure 1-2 As shown, the present invention discloses an anti-loosening bolt with a loosening warning function, comprising: a nut 1, a screw rod 2 is fixedly connected to the bottom end of the nut 1, the nut 1 is provided with a cavity opening upward, and a warning device 3 is provided in the cavity of the nut 1. When the bolt is loosened, the warning device 3 will give a corresponding prompt.

[0026] Further, such as Figure 2-5As shown, the early warning device 3 includes a top cover 31, a movable plate 32, a top plate 33, a first spring 341 and a second spring 342. There are two movable plates 32. The top cover 31 is detachably connected to the top of the nut 1. Specifically, the detachable connection is connected through a buckle assembly. Buckles are provided on both sides of the top of the nut near the cavity opening. The top cover 31 is fixed to the top of the nut by pressing. Limiting blocks 312 are provided on both sides of the bottom of the top cover 31 near the cavity. The other two sides of the bottom of the top cover 31 near the cavity are provided with a first slide 313. A hole 314 is provided on the top of the top cover 31. The two movable plates 32 slide with the first slide 313. The movable plates 32 are dynamically connected, and a first spring 341 is connected between the non-opposite side of the two movable plates 32 and the two ends of the first slideway 313. The top of the top plate 33 is arranged at the bottom of the nut 1 cavity, and a second spring 342 is connected between the top of the top plate 33 near the two ends and the top cover 31. A top block 331 is arranged at the top of the top plate 33, and a bottom block 332 is arranged at the bottom of the top plate 33 near the two ends. The top plate 33, the top block 331 and the bottom block 332 are an integrated structure. The inner wall of the hole 314 is aligned with the outer wall of the top block 331. Through grooves are provided at both ends of the nut 1 cavity near the bottom of the inner wall, and the inner wall of the through groove corresponds to the outer wall of the bottom block 332.

[0027] Based on the above structure, Figure 3-4 As shown, the early warning of the bolt includes the following states:

[0028] Initial state: the top cover 31 is fixed to the top of the nut 1, the top plate 33 slides toward the bottom of the cavity of the nut 1 under the pressure of the first spring 341, the bottom block 332 extends through the through slot to the bottom of the nut 1, the two movable plates 32 are pressed by the second spring 342, the two movable plates fit on opposite sides, and the two movable plates can only be observed through the hole 314;

[0029] Tightened state: the bottom block 332 slides toward the top cover 31 through the slot under the reverse thrust of the cross section of the fixed object, the first spring 341 is compressed by the force of the top plate 33, the bottom end of the nut 1 fits with the cross section of the fixed object, the bottom end of the bottom block 332 fits with the cross section of the fixed object, the two movable plates 32 move toward the two limit blocks 312 along the first slideway respectively under the force of the top block 332, the second spring 342 is compressed by the force of the movable plate 32, the top end of the top block 331 is embedded in the hole 314, and the top block 331 can only be observed through the hole 314;

[0030] Warning status: the bolts and the fixture are loose, the bottom end of the nut 1 is separated from the cross-section of the fixture, the top plate 33 slides along the inner wall of the nut 1 cavity toward the bottom end of the nut 1 cavity under the force of the first spring 341, the bottom block 332 slides through the inner wall of the through groove toward the cross-section of the fixture, the top block 332 slides toward the bottom end of the nut 1 along the top plate 33, and the two movable plates 32 slide under the pressure of the second spring 342. The two movable plates and the top block 331 can be observed through the hole 314.

[0031] Furthermore, in order to better identify the status of the warning device 3, the two movable panels 32 are red.

[0032] Furthermore, in order to better identify the status of the warning device 3, the top block 331 is green.

[0033] Further, such as Figure 3-4 As shown, in order to separate the opposite sides of the two movable plates 32 after being subjected to the force of the top block 331, grooves are provided on the opposite sides of the two movable plates 32, and the opposite sides of the two movable plates 32 near the top are arranged to be in an arc shape, and the top of the top block 331 near the outer wall is a cone, so that the apex of the cone can be more easily pushed into between the opposite sides of the two movable plates 32 near the top, and the arc outer wall can slide more easily along the outer wall of the cone.

[0034] Further, such as Figure 5 As shown, the distance from the top of the top block 331 to the top of the top plate 33 is the same as the distance from the bottom of the bottom block 332 to the bottom of the top plate 33, and the distance from the bottom of the first slideway 313 to the bottom of the nut 1 is the same as the distance from the bottom of the top plate 33 to the bottom of the bottom block 332. When the bolt and the fixture are fully tightened, the outer wall of the top block 331 fits the inner wall of the hole 314, and the bottom end of the bottom block 332 is aligned parallel to the bottom end of the nut 1, thereby rationally utilizing the cavity space of the nut 1.

[0035] Embodiment 2:

[0036] like Figure 3-5 As shown, based on the first embodiment, the bottom block 332 further includes a gasket 4, which is detachably connected to the bottom end of the bottom block 332, and the gasket 4 is made of rubber.

[0037] Furthermore, as shown in FIG6 , protrusions are evenly distributed on the bottom end of the gasket 4 .

[0038] Based on the above structure, Figure 5 and 6 As shown, when the bolt is loosened, the top plate 33 moves downward due to the rebound force of the first spring 341, and the gasket 4 is compressed due to the rebound force, so that the bottom end of the gasket 4 fits more closely with the fixed object. At the same time, the evenly distributed protrusions on the bottom end of the gasket 4 increase the friction between the gasket 4 and the cross-section of the fixed object when the bolt is loosened and rotated, thereby playing a role in preventing loosening.

[0039] Embodiment three:

[0040] like Figure 4 and 5As shown, based on the second embodiment, a groove 22 is provided at the bottom end of the screw 2, and a fastening rod 21 is slidably provided in the groove 22. An extension portion is provided at the top of the fastening rod 21, and the middle portion of the extension portion can be bent outward. The bolt is provided with a second slideway 23 that passes through both ends of the screw 2 and the bottom end of the groove 22. When the bolt is fastened to the fixed object, the fastening rod 21 is affected by the reaction force of the bottom end of the threaded hole and slides upward along the inner wall of the groove. The extension portion of the fastening rod 21 is folded toward the outer wall of the bolt along the second slideway 23 due to the sliding of the fastening rod 21. When the bolt is completely fastened to the fixed object, the folded portion of the extension portion of the fastening rod 21 is affected by the force and is clamped with the outer wall of the threaded hole. The folded portion of the extension portion of the fastening rod 21 applies pressure to the inner wall of the threaded hole, thereby achieving a better anti-loosening effect.

[0041] In summary, compared with the prior art, in order to provide an obvious prompt when the bolt is loose, the present invention is provided with a cavity with an opening upward, and an early warning device 3 is provided in the cavity of the nut 1. In order to separate the two movable plates 32 on opposite sides after being subjected to the force of the top block 331, the two movable plates 32 are provided with an arc shape on opposite sides near the top, and the top of the top block 331 near the outer wall is a cone. In order to prevent loosening, the bottom block 332 also includes a gasket 4, and protrusions are evenly distributed on the bottom end of the gasket 4. In order to better prevent loosening, the screw 2 includes a fastening rod 21, a groove 22 and a second slide 23.

[0042] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" and any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include... ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. An anti-loosening bolt with a loosening warning function, characterized in that: include: A nut (1), wherein a screw rod (2) is fixedly connected to the bottom end of the nut (1), the nut (1) is provided with a cavity opening upward, and an early warning device (3) is provided in the cavity of the nut (1), and when the bolt is loosened, the early warning device (3) will give a corresponding prompt; The early warning device (3) comprises a top cover (31), a movable plate (32), a top plate (33), a first spring (341) and a second spring (342), wherein the movable plates (32) are two, the top cover (31) is detachably connected to the top of the nut (1), both sides of the bottom of the top cover (31) close to the cavity are provided with limit blocks (312), the other two sides of the bottom of the top cover (31) close to the cavity are provided with first slideways (313), the top of the top cover (31) is provided with a hole (314), the two movable plates (32) are slidably connected to the first slideway (313), and the non-opposite sides of the two movable plates (32) are connected to the two ends of the first slideway (313). A first spring (341) is connected between the top of the top plate (33), the top of the top plate (33) is arranged at the bottom of the nut (1) cavity, a second spring (342) is connected between the top of the top plate (33) near both ends and the top cover (31), a top block (331) is arranged at the top of the top plate (33), and a bottom block (332) is arranged at the bottom of the top plate (33) near both ends, the top plate (33), the top block (331) and the bottom block (332) are an integrated structure, the inner wall of the hole (314) is aligned with the outer wall of the top block (331), and the two ends of the nut (1) cavity near the bottom of the inner wall are provided with through grooves, and the inner wall of the through groove is corresponding to the outer wall of the bottom block (332).

2. The anti-loosening bolt with loosening warning function according to claim 1, characterized in that: The two movable plates (32) are red.

3. The anti-loosening bolt with loosening warning function according to claim 2, characterized in that: The top block (331) is green.

4. The anti-loosening bolt with loosening warning function as claimed in claim 3, characterized in that: The two movable plates (32) are each provided with a groove on one opposite side, the two movable plates (32) are each provided with an arc-shaped opposite side near the top, and the top of the top block (331) near the outer wall is a cone.

5. The anti-loosening bolt with loosening warning function according to claim 4, characterized in that: The distance from the top end of the top block (331) to the top end of the top plate (33) is the same as the distance from the bottom end of the bottom block (332) to the bottom end of the top plate (33); the distance from the bottom end of the first slideway (313) to the bottom end of the nut (1) is the same as the distance from the bottom end of the top plate (33) to the bottom end of the bottom block (332).

6. The anti-loosening bolt with loosening warning function according to claim 5, characterized in that: The bolt warning includes the following states: Initial state: the top cover (31) is fixed to the top of the nut (1), the top plate (33) slides toward the bottom of the cavity of the nut (1) under the pressure of the first spring (341), the bottom block (332) passes through the through slot and extends to the bottom of the nut (1), the two movable plates (32) are pressed by the second spring (342), the two movable plates fit on opposite sides, and the two movable plates can only be observed through the hole (314); Tightened state: the bottom block (332) is subjected to the reverse thrust of the cross section of the fixed object and slides through the slot toward the top cover (31); the first spring (341) is compressed by the force of the top plate (33); the bottom end of the nut (1) fits with the cross section of the fixed object; the bottom end of the bottom block (332) fits with the cross section of the fixed object; the two movable plates (32) are subjected to the force of the top block (332) and move along the first slideway toward the two limit blocks (312) respectively; the second spring (342) is compressed by the force of the movable plate (32); the top end of the top block (331) is embedded in the hole (314); and the top block (331) can only be observed through the hole (314); Warning state: the bolt and the fixed object are loose, the bottom end of the nut (1) is separated from the cross section of the fixed object, the top plate (33) slides along the inner wall of the nut (1) cavity toward the bottom end of the nut (1) cavity under the force of the first spring (341), the bottom block (332) passes through the inner wall of the through groove and slides toward the cross section of the fixed object, the top block (332) slides toward the bottom end of the nut (1) along with the top plate (33), the two movable plates (32) slide under the pressure of the second spring (342), and the two movable plates and the top block (331) can be observed through the hole (314).

7. The anti-loosening bolt with loosening warning function according to any one of claims 1 to 6, characterized in that: The bottom block (332) further comprises a gasket (4), wherein the gasket (4) is detachably connected to the bottom end of the bottom block (332), and the gasket (4) is made of rubber.

8. The anti-loosening bolt with loosening warning function according to claim 7, characterized in that: The bottom end of the gasket (4) is evenly distributed with protrusions.

9. The anti-loosening bolt with loosening warning function according to claim 8, characterized in that: The bottom end of the screw rod (2) is provided with a groove (22), a fastening rod (21) is slidably arranged in the groove (22), an extension portion is arranged at the top end of the fastening rod (21), the middle portion of the extension portion can be bent outwards, and the bolt is provided with a second slideway (23) passing through both ends of the screw rod (2) and the bottom end of the groove (22).

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