Anti-drop fastener structure

Abstract

The utility model relates to the field of fasteners, and discloses an anti-falling type fastener structure which comprises a hexagon head, a bolt column is fixedly connected to the bottom of the hexagon head, a positioning ring groove is formed in the upper portion of the periphery of the bolt column, a threaded groove is formed in the periphery of the bolt column, a sliding sleeve is connected to the periphery of the bolt column in a sliding mode, and the sliding sleeve is sleeved with the threaded groove. A fixed round block is fixedly connected to the bottom of the sliding sleeve, an elastic assembly is fixedly connected to the top end of the fixed round block, a sliding block is fixedly connected to the top end of the elastic assembly, and a threaded sleeve is fixedly connected to the bottom of the sliding block. According to the fastening piece, the bolt column, the sliding sleeve and the limiting round ball are arranged, after the bolt column enters the sliding sleeve, the limiting round ball clamps the positioning ring groove, when the bolt column moves outwards, the sliding block is driven by the limiting round ball to move upwards, the limiting round ball can be clamped more tightly, and therefore the anti-disengaging performance of the fastening piece is greatly improved; and the connection is relatively stable.

Description

Technical Field

[0001] The utility model relates to the field of fasteners, in particular to an anti-slip fastener structure. Background Art

[0002] A bolt is a cylindrical threaded fastener that is paired with a nut. It is composed of a head and a screw (a cylinder with external threads). It must be used in conjunction 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.

[0003] When mechanical equipment is running, mechanical vibration will inevitably occur. Long-term mechanical vibration will cause the bolts to shake and the threads to wear, which will deteriorate the tightening effect of the bolts and affect the stability of the mechanical equipment. If the fastening bolts of the running machinery and equipment loosen and fall off, it is likely to affect the safety of personnel and cause great property losses. At present, operators usually perform regular maintenance to prevent the nuts on the bolts from loosening by applying torque, which increases the labor cost of mechanical equipment. Therefore, an anti-loosening fastener structure is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an anti-slip fastener structure, which aims to improve the problem in the prior art that vibration easily causes the fixing bolts to loosen and fall off, affecting the stability of the equipment.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-slip fastener structure, including a hexagonal head, a bolt column is fixedly connected to the bottom of the hexagonal head, a positioning ring groove is opened on the upper part of the outer periphery of the bolt column, a threaded groove is opened on the outer periphery of the bolt column, a sliding sleeve is slidably connected to the outer periphery of the bolt column, a fixed round block is fixedly connected to the bottom of the sliding sleeve, an elastic component is fixedly connected to the top of the fixed round block, a sliding block is fixedly connected to the top of the elastic component, a threaded sleeve is fixedly connected to the bottom of the sliding block, a through groove is opened inside the sliding block, a limiting groove is opened inside the sliding block, and a limiting ball is slidably connected inside the limiting groove.

[0006] As a further description of the above technical solution:

[0007] The top of the fixed round block is fixedly connected with an anti-skid bottom pad, the bottom of the hexagonal head is fixedly connected with an anti-skid top pad, and the top of the anti-skid bottom pad and the bottom of the anti-skid top pad are both provided with anti-skid grooves.

[0008] As a further description of the above technical solution:

[0009] The elastic component comprises a limit spring, the lower end of which is fixedly connected to the top of the fixed round block, the upper end of which is fixedly connected to a limit ring, and the top of which is fixedly connected to the bottom end of the sliding block.

[0010] As a further description of the above technical solution:

[0011] The outer periphery of the sliding block is slidably connected to the interior of the sliding sleeve, and the outer periphery of the limiting ring is slidably connected to the interior of the sliding sleeve.

[0012] As a further description of the above technical solution:

[0013] The outer periphery of the bolt column is slidably connected to the inside of the through groove, and the outer periphery of the threaded sleeve is threadedly connected to the outer periphery of the threaded groove.

[0014] As a further description of the above technical solution:

[0015] The inner side of the limiting ball is clamped in the interior of the positioning ring groove, and the outer side of the limiting ball is in contact with the inner wall of the side of the sliding sleeve.

[0016] As a further description of the above technical solution:

[0017] The anti-skid bottom pad is internally fixedly connected to the outer periphery of the sliding sleeve, and the anti-skid top pad is internally fixedly connected to the outer periphery of the bolt column.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, by arranging a bolt column, a sliding sleeve and a limiting ball, after the bolt column enters the interior of the sliding sleeve, the limiting ball clamps the positioning ring groove, and when the bolt column moves outward, the sliding block is driven upward by the limiting ball, which makes the limiting ball clamp more tightly, thereby greatly improving the anti-slip performance of the fastener and making the connection more stable.

[0020] 2. In the utility model, by arranging the anti-skid bottom pad and the anti-skid top pad, when fixing, the anti-skid bottom pad makes the sliding sleeve unable to rotate, making the screwing more convenient. After the screwing is completed, the anti-skid bottom pad and the anti-skid top pad contact with the object to prevent the sliding sleeve and the hexagonal head from being unable to rotate, thereby improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall front view schematic diagram of an anti-slip fastener structure proposed by the utility model;

[0022] Figure 2 A front cross-sectional schematic diagram of a sliding sleeve of an anti-slip fastener structure proposed by the utility model;

[0023] Figure 3The utility model discloses a top cross-sectional schematic diagram of a sliding block of an anti-slip fastener structure.

[0024] Legend:

[0025] 1. Hexagonal head; 2. Bolt column; 3. Positioning ring groove; 4. Threaded groove; 5. Sliding sleeve; 6. Fixed round block; 7. Limit spring; 8. Limit ring; 9. Sliding block; 10. Threaded sleeve; 11. Through groove; 12. Limit groove; 13. Limit ball; 14. Anti-skid bottom pad; 15. Anti-skid top pad; 16. Anti-skid groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-Figure 3 The utility model provides an embodiment: an anti-slip fastener structure, including a hexagonal head 1 that is convenient for screwing and rotating, a bolt column 2 that is convenient for fixing is fixedly connected to the bottom of the hexagonal head 1, a positioning ring groove 3 is opened on the upper part of the outer periphery of the bolt column 2, a thread groove 4 is opened on the outer periphery of the bolt column 2, a sliding sleeve 5 is slidably connected to the outer periphery of the bolt column 2, the top of the sliding sleeve 5 is tightened along the conical surface to form a truncated cone shape, a cavity is formed inside the sliding sleeve 5, and a fixed round block 6 is fixedly connected to the bottom of the sliding sleeve 5, fixed The diameter of the round block 6 is larger than that of the sliding sleeve 5, so that the fixed round block 6 can be easily fixed. An elastic component is fixedly connected to the top of the fixed round block 6, and the elastic component includes a limit spring 7. The lower end of the limit spring 7 is fixedly connected to the top of the fixed round block 6, and the upper end of the limit spring 7 is fixedly connected to the limit ring 8. The outer periphery of the limit ring 8 is slidably connected to the inside of the sliding sleeve 5. The sliding sleeve 5 limits the limit ring 8 to only slide up and down along the inner wall of the sliding sleeve 5. The limit spring 7 pushes the limit ring 8 to move upward when the limit ring 8 is not under force.

[0028] Reference Figure 1-Figure 3The top of the elastic component is fixedly connected with a sliding block 9, the top of the limit ring 8 is fixedly connected to the bottom of the sliding block 9, the outer periphery of the sliding block 9 is slidably connected to the inside of the sliding sleeve 5, and the shape of the sliding block 9 is adapted to the shape of the inner cavity of the sliding sleeve 5. When the sliding block 9 slides downward, the side outer wall of the sliding block 9 will produce a gap with the top side outer wall of the sliding sleeve 5. The bottom of the sliding block 9 is fixedly connected with a threaded sleeve 10, and the outer periphery of the threaded sleeve 10 is threadedly connected to the outer periphery of the thread groove 4, so that the bolt column 2 is connected to the threaded sleeve 10. A through groove 11 is opened inside the sliding block 9, and the position of the through groove 11 is consistent with the threaded sleeve. The top opening positions of 10 are the same and the diameters are the same. The outer periphery of the bolt column 2 is slidably connected to the inside of the through groove 11. A limiting groove 12 is opened inside the sliding block 9. Three groups of limiting grooves 12 are arranged, which are evenly distributed in an annular shape inside the sliding block 9. One end of the limiting groove 12 is connected to the through groove 11, and the other end of the limiting groove 12 is directly connected to the outer wall. A limiting ball 13 is slidably connected inside the limiting groove 12. The inner side of the limiting ball 13 is clamped in the inner side of the positioning ring groove 3, so that the bolt column 2 cannot move up and down. The outer side of the limiting ball 13 contacts the inner side wall of the sliding sleeve 5, so that the limiting ball 13 cannot slide outward.

[0029] Reference Figure 1-Figure 3 The top of the fixed round block 6 is fixedly connected with an anti-skid bottom pad 14, and the bottom of the hexagonal head 1 is fixedly connected with an anti-skid top pad 15. The anti-skid bottom pad 14 and the anti-skid top pad 15 are both made of soft silicone with certain elasticity and friction. The top of the anti-skid bottom pad 14 and the bottom of the anti-skid top pad 15 are both provided with anti-skid grooves 16 to increase friction.

[0030] Working principle: When you want to fix an object, insert the bolt column 2 into the groove 11, press the hexagonal head 1, the bolt column 2 contacts the limiting ball 13 downward, continue to press the bolt column 2 downward, the bolt column 2 drives the sliding block 9 to move downward through the limiting ball 13, and the sliding block 9 squeezes the limiting spring 7 downward. The sliding block 9 moves downward and separates from the top side wall of the sliding sleeve 5, revealing a gap. At this time, the limiting ball 13 moves outward along the limiting groove 12 under the pressure of the bolt column 2, and always contacts the inner wall of the side of the sliding sleeve 5. When the limiting ball 13 completely slides into the limiting groove 12, the bolt column 2 continues to move downward and contacts the threaded sleeve 10. Turn the hexagonal head 1 to fix the bolt column 2 and the threaded sleeve 10. At this time, the bolt column 2 moves downward along the threaded sleeve 10. When the bolt column 2 moves When the positioning ring groove 3 is located at the limiting groove 12, the limiting ball 13 can move inward, and the limiting spring 7 releases its elasticity, pushing the sliding block 9 upward, and the sliding sleeve 5 squeezes the limiting ball 13 to move inward, so that the limiting ball 13 is clamped in the interior of the positioning ring groove 3, thereby fixing firmly. At this time, the bolt column 2 moves upward, which will drive the sliding block 9 to move upward, and the inclined surface of the sliding sleeve 5 squeezes the limiting ball 13 to move inward, so that the bolt column 2 cannot move upward, and has good anti-slip movement. When fixing, the sliding sleeve 5 is slid into the positioning hole of the object to be fixed, and the top of the fixing round block 6 contacts the object to be fixed, squeezing the anti-skid bottom pad 14, so that the sliding sleeve 5 is difficult to rotate, making the installation more convenient. At the same time, after the bolt column 2 is tightened, the hexagonal head 1 contacts the top surface of the fixed object, and squeezes the anti-skid top pad 15, so that the hexagonal head 1 is difficult to rotate, increasing the stability of the connection.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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-slip fastener structure, comprising a hexagonal head (1), characterized in that: The bottom of the hexagonal head (1) is fixedly connected to a bolt column (2), the upper part of the outer circumference of the bolt column (2) is provided with a positioning ring groove (3), the outer circumference of the bolt column (2) is provided with a threaded groove (4), the outer circumference of the bolt column (2) is slidably connected to a sliding sleeve (5), the bottom of the sliding sleeve (5) is fixedly connected to a fixed round block (6), the top of the fixed round block (6) is fixedly connected to an elastic component, the top of the elastic component is fixedly connected to a sliding block (9), the bottom of the sliding block (9) is fixedly connected to a threaded sleeve (10), the interior of the sliding block (9) is provided with a through groove (11), the interior of the sliding block (9) is provided with a limiting groove (12), and the interior of the limiting groove (12) is slidably connected to a limiting ball (13).

2. The anti-slip fastener structure according to claim 1, characterized in that: The top of the fixed round block (6) is fixedly connected with an anti-skid bottom pad (14), the bottom of the hexagonal head (1) is fixedly connected with an anti-skid top pad (15), and the top of the anti-skid bottom pad (14) and the bottom of the anti-skid top pad (15) are both provided with anti-skid grooves (16).

3. The anti-slip fastener structure according to claim 1, characterized in that: The elastic component comprises a limit spring (7), the lower end of the limit spring (7) is fixedly connected to the top of the fixed round block (6), the upper end of the limit spring (7) is fixedly connected to a limit ring (8), and the top of the limit ring (8) is fixedly connected to the bottom end of the sliding block (9).

4. The anti-slip fastener structure according to claim 3, characterized in that: The outer periphery of the sliding block (9) is slidably connected to the interior of the sliding sleeve (5), and the outer periphery of the limiting ring (8) is slidably connected to the interior of the sliding sleeve (5).

5. The anti-slip fastener structure according to claim 1, characterized in that: The outer periphery of the bolt column (2) is slidably connected to the interior of the through groove (11), and the outer periphery of the threaded sleeve (10) is threadedly connected to the outer periphery of the threaded groove (4).

6. The anti-slip fastener structure according to claim 1, characterized in that: The inner side of the limiting ball (13) is clamped in the interior of the positioning ring groove (3), and the outer side of the limiting ball (13) is in contact with the inner wall of the side of the sliding sleeve (5).

7. The anti-slip fastener structure according to claim 2, characterized in that: The anti-skid bottom pad (14) is internally fixedly connected to the outer periphery of the sliding sleeve (5), and the anti-skid top pad (15) is internally fixedly connected to the outer periphery of the bolt column (2).

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