A fastening anti-loosening device

Abstract

The utility model belongs to the technical field of fastener, provide a fastening anti -loose device, including screw rod spare, locking nut spare, clamping assembly, the screw rod spare is equipped with the stud part and screw head part, locking nut spare with the stud part is screwed together, and is formed with fastening space between the screw head part, the stud part on and along its length's extension direction is equipped with a plurality of positioning through groove, clamping assembly is V type structure, including clamping piece and elastic part, the clamping piece includes first clamping plate and second clamping plate. The fastening anti -loose device of the application, the structure design is reasonable, and the installation and operation are convenient, can effectively prevent locking nut spare and loosen displacement because of rotation, thereby prevent the phenomenon that the locking nut spare of fastening article because of vibration leads to loosening.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, specifically relating to a fastening and anti-loosening device. Background Technology

[0002] In existing technologies, conveyor belts, which transport goods in enterprise production workshops, are a crucial component. These conveyor belts rely on the rotation of rollers for power, and these rollers are fixed to the conveyor by screws and nuts. During operation, the rollers rotate continuously; assuming 8 hours a day, this amounts to over 2900 hours a year. Such frequent rotation causes vibrations to the screws and nuts, which over time can lead to loosening of the nuts. This loosening is a very subtle change, difficult to detect visually. If left unchecked, it can eventually cause the rollers to disconnect from the conveyor, resulting in conveyor belt shutdowns, production stoppages, delivery delays, and significant economic losses.

[0003] For example, in August 2023, a beverage company in eastern my country was working overtime during the peak summer season to produce beverages when one of the rollers on the conveyor belt suddenly disconnected from the conveyor, causing the beverages being transported to fall. The entire production line was shut down for maintenance. The inspection revealed that frequent vibrations had loosened the nut on the roller, ultimately causing it to disconnect from the conveyor. Further inspection of all the rollers on the conveyor belt revealed that the nuts on seven more rollers were loose, requiring repair of all of them. This not only delayed production but also forced the postponement of 1.5 million yuan worth of beverages that were originally scheduled for delivery that day, impacting peak season sales and resulting in significant economic losses. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a fastening and anti-loosening device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A fastening and anti-loosening device includes a screw, a locking nut, and a snap-fit ​​assembly; The screw component has a stud portion and a screw head portion, and the locking nut component is threadedly engaged with the stud portion and forms a fastening space with the screw head portion; The stud portion is provided with several positioning slots along its length extension direction; The snap-fit ​​assembly has a V-shaped structure and includes a snap-fit ​​component and an elastic component. The snap-fit ​​component includes a first snap-fit ​​plate and a second snap-fit ​​plate. One end of the first snap-fit ​​plate is hinged to one end of the second snap-fit ​​plate. The elastic component is connected to the first snap-fit ​​plate and the second snap-fit ​​plate respectively. The other end of the first snap-fit ​​plate and the other end of the second snap-fit ​​plate form a snap-fit ​​opening. When the elastic component is in its natural state, the size of the snap-fit ​​opening is larger than the size of the positioning through groove. When the snap-fit ​​assembly engages with one of the positioning slots, the elastic element is in a compressed state, and the other end of the first snap-fit ​​plate is outside the positioning slot.

[0006] Preferably, the first and second snap-fit ​​plates are provided with positioning protrusions, and the inner wall of the positioning through groove is provided with positioning grooves that cooperate with the positioning protrusions.

[0007] Preferably, the positioning protrusion is arc-shaped.

[0008] Preferably, a bent pressing part is provided at the other end of the first snap-fit ​​plate.

[0009] Preferably, the plurality of positioning slots are arranged at equal intervals along the extension direction of the stud portion.

[0010] Preferably, the elastic element is a spring.

[0011] Preferably, when the snap-fit ​​assembly engages with one of the positioning slots, it is positioned above the locking nut, and when the locking nut moves on the stud portion, it can abut against the second snap-fit ​​plate.

[0012] Preferably, it also includes a washer, which is sleeved on the screw and positioned below the locking nut.

[0013] Compared with the prior art, the beneficial effects of this utility model include: The fastening and anti-loosening device of this application has a reasonable structural design and is easy to install and operate. It can effectively prevent the locking nut from loosening or shifting due to rotation, thereby preventing the phenomenon of the locking nut from loosening due to vibration of the fastened item. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram illustrating the first method of how this utility model is used in conjunction with an item that needs to be fastened. Figure 2 This is a schematic diagram illustrating a second method of combining the present invention with an item that needs to be fastened; Figure 3 This is a structural schematic diagram of the screw component of this utility model; Figure 4This is a schematic diagram of the structure of the snap-fit ​​component and the positioning through groove of this utility model.

[0016] in: 1-Locking nut, 2-Stud, 3-Screw head, 4-Positioning groove, 5-Elastic element, 6-First snap-fit ​​plate, 7-Second snap-fit ​​plate, 8-Positioning protrusion, 9-Positioning groove, 10-Pressing part, 11-Washer. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0019] Example: like Figure 1-4 As shown, this embodiment provides a fastening and anti-loosening device, including a screw, a locking nut 1, and a snap-fit ​​assembly; The screw component has a stud portion 2 and a screw head 3. The locking nut component 1 is threadedly engaged with the stud portion 2 and forms a fastening space with the screw head 3. The stud portion 2 is provided with several positioning slots 4 along its length extension direction; The snap-fit ​​assembly has a V-shaped structure and includes a snap-fit ​​component and an elastic component 5. The snap-fit ​​component includes a first snap-fit ​​plate 6 and a second snap-fit ​​plate 7. One end of the first snap-fit ​​plate 6 is hinged to one end of the second snap-fit ​​plate 7. The elastic component 5 is connected to the first snap-fit ​​plate 6 and the second snap-fit ​​plate 7 respectively. The other end of the first snap-fit ​​plate 6 and the other end of the second snap-fit ​​plate 7 form a snap-fit ​​opening. When the elastic component 5 is in its natural state, the size of the snap-fit ​​opening is larger than the size of the slot of the positioning through groove 4. When the snap-fit ​​assembly engages with one of the positioning slots 4, the elastic element 5 is in a compressed state, and the other end of the first snap-fit ​​plate 6 is outside the positioning slot 4.

[0020] Specifically, the first snap-fit ​​plate 6 and the second snap-fit ​​plate 7 are provided with positioning protrusions 8, and the inner wall of the positioning through groove 4 is provided with positioning grooves 9 that cooperate with the positioning protrusions 8.

[0021] Specifically, the positioning protrusion 8 is arc-shaped.

[0022] Specifically, a bent pressing part 10 is provided at the other end of the first card plate 6.

[0023] Specifically, several positioning slots 4 are arranged at equal intervals along the extension direction of the stud portion 2.

[0024] Specifically, elastic element 5 is a spring.

[0025] Specifically, when the snap-fit ​​component engages with one of the positioning slots 4 and is positioned above the locking nut 1, the locking nut 1 can abut against the second snap-fit ​​plate 7 when it moves on the stud portion 2.

[0026] Based on the above structure, the application scenarios and the principle of fastening and loosening in this embodiment are as follows: The screw passes through the item to be fastened. Specifically, the item to be fastened is located within the fastening space. The screw head 3 abuts against one end of the item, and the locking nut 1 abuts against the other end of the item to achieve a fastening effect. At this time, a snap-fit ​​component is installed at the position corresponding to the positioning slot 4 above the locking nut 1. Specifically, the snap-fit ​​component is installed into the positioning slot 4, and the positioning protrusion 8 and the positioning groove 9 are engaged to prevent the snap-fit ​​component from moving within the positioning slot 4 and from being moved out of the positioning slot 4, ensuring accurate and reliable positioning within the positioning slot 4. At this time, the elastic element 5 is in a compressed state. When the item to be fastened experiences frequent vibration, the locking nut 1 will displace relative to the screw stud 2 under the action of the fastened item. The second snap-fit ​​plate 7 can abut against the locking nut component through the rebound force of the elastic element 5, preventing the locking nut 1 from loosening or displacing due to rotation, thereby preventing the phenomenon of the locking nut 1 loosening due to vibration of the fastened item.

[0027] Meanwhile, when maintenance is required, press the other end of the first snap-fit ​​plate 6 to make the spring force of the locking nut 1 disappear, and the snap-fit ​​assembly can be removed for maintenance, which is convenient and simple.

[0028] In the above structure, in order to facilitate the positioning and movement of the snap-fit ​​component in the positioning slot 4, the positioning protrusion 8 is arc-shaped, and the shape of the positioning groove 9 matches the shape of the positioning protrusion 8. The arc-shaped mating surface facilitates the engagement and disengagement of the positioning protrusion 8 and the positioning groove 9. Furthermore, the pressing part 10 also makes it easier for users to press the other end of the first snap-fit ​​plate 6 to change the angle between the first snap-fit ​​plate 6 and the second snap-fit ​​plate 7. Furthermore, the structure in which several positioning slots 4 are arranged at equal intervals along the extension direction of the stud portion 2 can accommodate fastening spaces of different sizes formed for items of different thicknesses that require fastening, thereby increasing the adaptability of this embodiment. To further enhance the adaptability of this embodiment, please refer to the following for details. Figure 2 It also includes a washer 11, which is sleeved on the screw and positioned below the locking nut 1. The above structure is designed so that when the thickness of the item to be fastened causes a distance difference between the locking nut 1 and the second snap-fit ​​plate 7, preventing the second snap-fit ​​plate 7 from abutting against the locking nut 1, the washer 11 is specifically positioned between the locking nut 1 and the item to be fastened to offset the distance difference between the locking nut 1 and the second snap-fit ​​plate 7, ensuring that the second snap-fit ​​plate 7 abuts against the locking nut 1 and ensuring a fastening and anti-loosening effect.

[0029] In summary, the structural design of this embodiment is reasonable, and the installation and operation are convenient. It can effectively prevent the locking nut 1 from loosening and shifting due to rotation, thereby preventing the phenomenon that the locked object will loosen due to vibration.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A fastening and anti-loosening device, characterized in that, Includes screw components, locking nut components, and snap-fit ​​components; The screw component has a stud portion and a screw head portion, and the locking nut component is threadedly engaged with the stud portion and forms a fastening space with the screw head portion; The stud portion is provided with several positioning through slots along its length. The snap-fit ​​assembly has a V-shaped structure and includes a snap-fit ​​component and an elastic component. The snap-fit ​​component includes a first snap-fit ​​plate and a second snap-fit ​​plate. One end of the first snap-fit ​​plate is hinged to one end of the second snap-fit ​​plate. The elastic component is connected to the first snap-fit ​​plate and the second snap-fit ​​plate respectively. The other end of the first snap-fit ​​plate and the other end of the second snap-fit ​​plate form a snap-fit ​​opening. When the elastic component is in its natural state, the size of the snap-fit ​​opening is larger than the size of the positioning through groove. When the snap-fit ​​assembly engages with one of the positioning slots, the elastic element is in a compressed state, and the other end of the first snap-fit ​​plate is outside the positioning slot.

2. The fastening and anti-loosening device according to claim 1, characterized in that, The first and second snap-fit ​​plates are provided with positioning protrusions, and the inner wall of the positioning through groove is provided with positioning grooves that cooperate with the positioning protrusions.

3. The fastening and anti-loosening device according to claim 2, characterized in that, The positioning protrusion is arc-shaped.

4. The fastening and anti-loosening device according to claim 1, characterized in that, A bent pressing part is provided at the other end of the first snap-fit ​​plate.

5. The fastening and anti-loosening device according to claim 1, characterized in that, Several of the positioning slots are arranged at equal intervals along the extension direction of the stud portion.

6. The fastening and anti-loosening device according to claim 1, characterized in that, The elastic element is a spring.

7. The fastening and anti-loosening device according to claim 1, characterized in that, When the snap-fit ​​assembly engages with one of the positioning slots, it is positioned above the locking nut. When the locking nut moves on the stud portion, it can abut against the second snap-fit ​​plate.

8. The fastening and anti-loosening device according to claim 1, characterized in that, It also includes a washer, which is fitted onto the screw and positioned below the locking nut.

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