Anti-falling bolt
By designing anti-detachment components in the bolts, and using the cooperation of springs, washers and clamps, the problems of nut loosening and falling off in traditional bolts in high vibration environments are solved, achieving better tightening effect and stability.
Patent Information
- Application Number
- CN202421995745.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-08-17
AI Technical Summary
Traditional bolts can easily cause the nut to loosen or even fall off in high vibration working environments, resulting in poor tightening effect.
An anti-fall bolt is designed, using an anti-fall assembly including springs, washers, clamps and small springs. Through the fit of clamps and springs, the nuts are prevented from falling back and loosening.
Effectively prevent the nut from loosening and falling off in high vibration environments, improve the tightening effect, and ensure the stability and reliability of the bolts.
Smart Images
Figure CN222848512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolts, in particular to an anti-falling bolt. Background Art
[0002] Bolts, mechanical parts, consist of two parts, screws and nuts, and are used to fasten two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the screw, the two parts can be separated, so the bolt connection is a detachable connection.
[0003] Bolts are widely used in various working environments. Traditional bolts have poor anti-vibration effect. When bolts are in a high-vibration working environment, they will be vibrated for a long time, which can easily cause the nut to loosen or even fall off, resulting in poor fastening effect. Utility Model Content
[0004] The utility model aims to provide an anti-dropping bolt to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-dropping bolt, comprising a stud, a screw head fixedly arranged above the stud, and a nut threadedly connected to the stud, characterized in that: the stud is provided with an anti-dropping component, the anti-dropping component comprises a spring A and a washer A sleeved on the screw, a clamping block movably arranged on the screw, and a plurality of small springs, the washer A is located above the nut, the spring A is located between the nut and the washer A, the two ends of the spring A are respectively fixedly connected to the nut and the washer A, a telescopic groove is provided on the screw, the small spring is located inside the telescopic groove, the two ends of the small spring are respectively fixedly connected to the clamping block and the side wall of the telescopic groove, the clamping block is located below the nut and is connected to the nut in abutment with the nut, the clamping block is arranged in an arc shape away from the screw, and the clamping block is located outside the telescopic groove.
[0006] Preferably, the anti-slip assembly also includes an extension column fixedly arranged below the stud, a screw sleeve threadedly connected to the extension column, a spring B and a washer B sleeved on the extension column, and a plurality of clamping columns fixedly arranged above the washer B, the washer B is located above the screw sleeve, the spring B is located between the screw sleeve and the washer B, the two ends of the spring B are fixedly connected to the screw sleeve and the washer B respectively, and the clamping column is in contact with the nut.
[0007] Preferably, a sliding block is fixedly provided above the clamping block, a sliding groove matching the sliding block is provided on the top wall of the telescopic groove, and the sliding block is located inside the sliding groove and is slidably connected with the screw.
[0008] Preferably, the diameter of the extension column is smaller than the diameter of the stud, the stud thread is a positive thread, and the extension column is provided with a negative thread.
[0009] Preferably, the outer side of the screw sleeve is provided with a reticulated knurling.
[0010] Preferably, a cross groove is provided on the top wall of the screw head.
[0011] Preferably, a hexagonal groove penetrating the cross groove is provided on the top wall of the screw head.
[0012] The beneficial effects of the utility model are as follows: when the utility model is used, the stud is inserted into the through hole on the part to be locked, so that the screw head is located above the part to be locked and is connected with it in abutment, the nut is screwed into the stud and is threadedly connected with the stud, so that the nut is located below the part to be locked and is fixedly connected with it, so that the part to be locked is locked between the screw head and the nut; in the process of rotating the nut to move it upward, since the clamping block is arranged in an arc shape away from the screw on one side, the clamping block is located outside the telescopic groove, the nut will squeeze the clamping block, and the clamping block will retract into the telescopic groove after squeezing the spring, and the nut will be located above the clamping block after being fixedly connected to the part, and the spring will pop the clamping block out of the telescopic groove, so that the clamping block is clamped under the nut and is in abutment with it. The spring A is located between the nut and the washer A and is fixedly connected to the nut and the washer A, and after the nut is tightened, the spring A will give the nut an elastic force, so that the thread of the nut and the thread of the stud are tightly pressed against each other, thereby preventing the nut from loosening and further preventing the nut from falling off; in summary, the utility model has the beneficial effect of preventing the nut from loosening and retreating, and solves the problem that when the bolt is in a high-vibration working environment, the bolt will be subjected to long-term vibration, which may easily cause the nut to loosen or even fall off, resulting in a poor fastening effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Attached Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Attached Figure 2 This is a schematic diagram of the bottom structure of the utility model;
[0015] Attached Figure 3 It is a top view of the utility model;
[0016] Attached Figure 4 For attachment Figure 3 Sectional view at AA.
[0017] In the figure: stud 1, screw head 2, nut 3, spring A4, washer A5, block 6, small spring 7, telescopic slot 8, extension column 9, screw sleeve 10, spring B11, washer B12, clamping column 13, slider 14, slide groove 15, reticulated knurling 17, cross groove 18, hexagonal groove 19. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0019] like Figure 1-4 As shown, the utility model discloses an anti-dropping bolt, comprising a stud 1, a screw head 2 fixedly arranged above the stud 1, and a nut 3 threadedly connected to the stud 1, the stud 1 is provided with an anti-dropping component, the anti-dropping component comprises a spring A4 and a washer A5 sleeved on the screw, a clamping block 6 movably arranged on the screw, and a plurality of small springs 7, the washer A5 is located above the nut 3, the spring A4 is located between the nut 3 and the washer A5, the two ends of the spring A4 are respectively fixedly connected to the nut 3 and the washer A5, a telescopic groove 8 is opened on the screw, the small spring 7 is located inside the telescopic groove 8, the two ends of the small spring 7 are respectively fixedly connected to the clamping block 6 and the side wall of the telescopic groove 8, the clamping block 6 is located below the nut 3 and is connected in abutment with the nut 3, the clamping block 6 is arranged in an arc shape away from the screw, and the clamping block 6 is located outside the telescopic groove 8. When the utility model is used, the stud 1 is inserted into the through hole on the part to be locked, so that the screw head 2 is located above the part to be locked and is connected with it in abutment, the nut 3 is screwed into the stud 1 and is threadedly connected with the stud 1, so that the nut 3 is located below the part to be locked and is fixedly connected with it, so that the part to be locked is locked between the screw head 2 and the nut 3; in the process of rotating the nut 3 to move it upward, since the clamping block 6 is arranged in an arc shape away from the screw, the clamping block 6 is located outside the telescopic groove 8, the nut 3 will squeeze the clamping block 6, and the clamping block 6 will retract into the telescopic groove 8 after squeezing the spring, and the nut 3 will be located above the clamping block 6 after being fixedly connected to the part, and the spring will pop the clamping block 6 out of the telescopic groove 8, so that the clamping block 6 is stuck below the nut 3 and is connected with it in abutment, so as to start The screw thread of the nut 3 is tightened, and the screw thread of the stud 1 is tightened, thereby preventing the nut 3 from loosening and further preventing the nut 3 from falling off. In summary, the utility model has the beneficial effect of preventing the nut 3 from loosening and retreating, and solves the problem that when the bolt is in a high-vibration working environment, the bolt will be subjected to long-term vibration, which may easily cause the nut 3 to loosen or even fall off, resulting in a poor tightening effect.
[0020] Preferably, the anti-slip assembly also includes an extension column 9 fixedly arranged below the stud 1, a screw sleeve 10 threadedly connected to the extension column 9, a spring B11 and a washer B12 sleeved on the extension column 9, and a plurality of clamping columns 13 fixedly arranged above the washer B12, the washer B12 is located above the screw sleeve 10, the spring B11 is located between the screw sleeve 10 and the washer B12, the two ends of the spring B11 are respectively fixedly connected to the screw sleeve 10 and the washer B12, and the clamping column 13 is in contact with the nut 3. When the nut 3 is fixedly connected to the part, the screw sleeve 10 is screwed into the extension column 9 and threadedly connected to the extension column 9. Since the spring B11 is located between the screw sleeve 10 and the washer B12 and is fixedly connected to the screw sleeve 10 and the washer B12, a plurality of clamping columns 13 are fixedly arranged above the washer B12. After the screw sleeve 10 is rotated to move it upward, the clamping columns 13 will press on the nut 3 and be fixedly connected to it, thereby further preventing the nut 3 from loosening. After the clamping columns 13 are fixedly connected to the nut 3, the spring B11 will give the screw sleeve 10 an elastic force, so that the thread of the screw sleeve 10 is pressed against the thread of the extension column 9, thereby preventing the screw sleeve 10 from loosening.
[0021] Preferably, a slider 14 is fixedly arranged above the block 6, a slide groove 15 matching the slider 14 is provided on the top wall of the telescopic slot 8, and the slider 14 is located inside the slide groove 15 and is slidably connected to the screw. Since the slider 14 is located inside the slide groove 15 and is slidably connected to the screw, it facilitates the sliding of the block 6.
[0022] Preferably, the diameter of the extension column 9 is smaller than that of the stud 1, the thread of the stud 1 is a positive thread, and the extension column 9 is provided with a negative thread. Since the diameter of the extension column 9 is smaller than the diameter of the stud 1, it is convenient to remove the nut 3; since the thread of the stud 1 is a positive thread, the extension column 9 is provided with a negative thread, which plays a role in strengthening the pressing force of the screw sleeve 10 on the nut 3.
[0023] Preferably, the outer side of the screw sleeve 10 is provided with a reticulated knurling 17. Since the outer side of the screw sleeve 10 is provided with the reticulated knurling 17, it is convenient to rotate the screw sleeve 10.
[0024] Preferably, a cross groove 18 is provided on the top wall of the screw head 2. Since the cross groove 18 is provided on the top wall of the screw head 2, it is convenient to tighten the stud 1.
[0025] Preferably, a hexagonal groove 19 is provided on the top wall of the screw head 2 and is connected to the cross groove 18. Since the hexagonal groove 19 is provided on the top wall of the screw head 2 and is connected to the cross groove 18, the screw head 2 can be adapted to various tools.
[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An anti-drop bolt, comprising a stud (1), a screw head (2) fixedly arranged above the stud (1), and a nut (3) threadedly connected to the stud (1), characterized in that: The stud (1) is provided with an anti-slip assembly, which comprises a spring A (4) and a washer A (5) sleeved on the screw, a clamping block (6) movably arranged on the screw, and a plurality of small springs (7). The washer A (5) is located above the nut (3), the spring A (4) is located between the nut (3) and the washer A (5), and the two ends of the spring A (4) are respectively fixedly connected to the nut (3) and the washer A (5). A telescopic groove (8) is provided on the screw, the small spring (7) is located inside the telescopic groove (8), and the two ends of the small spring (7) are respectively fixedly connected to the clamping block (6) and the side wall of the telescopic groove (8). The clamping block (6) is located below the nut (3) and is connected to the nut (3) in abutting manner. The side of the clamping block (6) away from the screw is arranged in an arc shape, and the clamping block (6) is located outside the telescopic groove (8).
2. The anti-dropping bolt according to claim 1, characterized in that: The anti-slip assembly further comprises an extension column (9) fixedly arranged below the stud (1), a screw sleeve (10) threadedly connected to the extension column (9), a spring B (11) and a washer B (12) sleeved on the extension column (9), and a plurality of clamping columns (13) fixedly arranged above the washer B (12), wherein the washer B (12) is located above the screw sleeve (10), the spring B (11) is located between the screw sleeve (10) and the washer B (12), the two ends of the spring B (11) are respectively fixedly connected to the screw sleeve (10) and the washer B (12), and the clamping column (13) is in contact connection with the nut (3).
3. The anti-dropping bolt according to claim 1, characterized in that: A sliding block (14) is fixedly arranged above the clamping block (6), a sliding groove (15) matching the sliding block (14) is provided on the top wall of the telescopic slot (8), and the sliding block (14) is located inside the sliding groove (15) and is slidably connected to the screw.
4. The anti-dropping bolt according to claim 2, characterized in that: The diameter of the extension column (9) is smaller than the diameter of the stud (1); the thread of the stud (1) is a positive thread, and the extension column (9) is provided with a negative thread.
5. The anti-dropping bolt according to claim 2, characterized in that: The outer side of the screw sleeve (10) is provided with a reticulated knurling (17).
6. The anti-dropping bolt according to claim 1, characterized in that: A cross groove (18) is provided on the top wall of the screw head (2).
7. The anti-dropping bolt according to claim 6, characterized in that: The top wall of the screw head (2) is provided with a hexagonal groove (19) which penetrates the cross groove (18).