CN218718110U - Anti-loosening bolt assembly - Google Patents

Abstract

The utility model relates to an anti-loosening bolt assembly, which is used for connecting a connected piece provided with a first threaded hole and a connecting piece provided with a second threaded hole, the first threaded hole and the second threaded hole have the same rotation direction and the first threaded hole The diameter of the hole is greater than the diameter of the second threaded hole. The anti-loosening bolt assembly includes a bolt, a first ring segment and a second ring segment. The first ring segment is placed in the first threaded through hole, and both end surfaces of the first ring segment are sloped. The included angles between the two slopes and the top surface of the first ring segment are obtuse angles, the first ring segment is provided with a first threaded segment that matches the first threaded hole, and a second ring segment is provided in the first threaded through hole to be connected There is a limiting groove connected with the first threaded through hole on the part, and a limiting part is arranged in the limiting groove, and the second ring segment and the limiting part are fixed in the circumferential direction, and the first ring segment and the second ring segment are combined to form a closed ring . The anti-loosening bolt assembly of the utility model has good anti-loosening effect and is not easy to loosen.

Description

Anti-loosening bolt assembly

technical field

The utility model relates to the technical field of bolts, in particular to an anti-loosening bolt assembly.

Background technique

The bolt assembly is used to fasten two parts with through holes. It is widely used in production and life, and has become an indispensable part in industrial production. However, after the bolt assembly is tightened to the parts, it is easy to loosen due to the movement of the parts, especially for high-speed running vehicles and continuously running machinery and equipment. Loosening or even loosening and falling, 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.

Utility model content

In order to overcome the technical defects in the prior art, the utility model provides an anti-loosening bolt assembly, which has a good anti-loosening effect and is not easy to loosen.

The technical solution adopted by the utility model is: an anti-loosening bolt assembly, which is used to connect the connected piece with the first threaded hole and the connecting piece with the second threaded hole, the first threaded hole and the second threaded hole The two threaded holes have the same direction of rotation and the diameter of the first threaded hole is larger than the diameter of the second threaded hole. The anti-loosening bolt assembly includes a bolt, and the bolt includes a screw part and a screw head arranged on the upper end of the screw part. The screw part below the head is connected with a first ring segment with a central angle greater than 180 degrees, the first ring segment is placed in the first threaded through hole, and the two end faces of the first ring segment are is an inclined plane, and the included angles between the two inclined planes and the top surface of the first ring segment are obtuse angles, and the side of the first ring segment away from the center of the circle is provided with a first threaded segment matched with the first threaded hole, A second ring segment is also provided in the first threaded through hole, a limiting groove communicating with the first threaded through hole is provided on the connected piece, a limiting member is arranged in the limiting groove, and the first The second ring segment and the limiting member are circumferentially fixed, and the first ring segment is combined with the second ring segment to form a closed ring.

Preferably, blind holes with openings facing upward are provided on both slopes of the first ring segment, and protrusions are provided on the second ring segment to fit into the blind holes.

Preferably, a vertically extending groove is provided on a side of the second ring segment away from the bolt axis, and a raised line that fits with the groove is provided on the limit key.

Preferably, the screw head is a hexagon bolt head.

Preferably, a transition section is provided between the screw head and the screw part.

The beneficial effect of the utility model is that: the anti-loosening bolt assembly of the utility model includes a bolt, the bolt includes a screw part and a screw head arranged at the upper end of the screw part, and the screw part below the screw head is provided with a central angle The first ring segment greater than 180 degrees, the first ring segment is matched with the first threaded through hole through a thread pair, the first threaded through hole is also provided with a second ring segment, the connected part There is a limiting groove communicating with the first threaded through hole, the second ring section extends from the first threaded through hole into the limiting groove, an elastic washer is arranged under the screw head, and the lower end of the elastic washer It abuts against the top surface of the first ring segment and the top surface of the second ring segment, and after the screw is combined in the first threaded hole through the first ring segment, the second ring segment is assembled so that the first ring segment and the second ring segment form a Complete closed loop, when the bolt is loose and rotated due to vibration, the second ring segment cannot follow the rotation of the bolt and will lock the first ring segment so that it cannot rotate, thus realizing the locking of the bolt.

Description of drawings

Fig. 1 is the schematic diagram of the anti-loosening bolt assembly of the structure of the utility model.

Fig. 2 is a top view of the first ring section of the present invention.

Fig. 3 is the front view of the second ring section of the utility model

Fig. 4 is a schematic diagram of assembly of the first ring segment and the second ring segment of the present invention.

Explanation of reference signs: 1. Connected piece; 101, first threaded hole; 102, through hole; 103, limit groove; 2, connector; 201, second threaded hole; 3, bolt; 301, screw head; 302, screw part; 303, transition section; 4, first ring section; 401, slope; 402, blind hole; 5, second ring section; 501, protrusion; 502, groove; 6, limiter; 601 , Convex.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 to 4, this embodiment provides an anti-loosening bolt assembly. Connector 2, the first threaded hole 101 and the second threaded hole 201 have the same rotation direction and the diameter of the first threaded hole 101 is larger than the diameter of the second threaded hole 201, the anti-loosening bolt assembly includes a bolt 3, The bolt 3 includes a screw part 302 and a screw head 301 arranged on the upper end of the screw part 302 , the screw part 302 below the screw head 301 is connected with a first ring segment 4 with a central angle greater than 180 degrees. The first ring segment 4 is placed in the first threaded hole 101, and both end surfaces of the first ring segment 4 are slopes 401, and the two slopes 401 are clamped with the top surface of the first ring segment 4. The angles are all obtuse angles, and the side of the first ring segment 4 away from its center is provided with a first threaded segment matching with the first threaded hole 101, and a second ring is also provided in the first threaded through hole 102. Section 5, the connected part 1 is provided with a limiting groove 103 communicating with the first threaded through hole 102, the limiting groove 103 is provided with a limiting member 6, the second ring segment 5 and the limiting member 6 is fixed in the circumferential direction, and the first ring segment 4 is combined with the second ring segment 5 to form a closed ring. The anti-loosening bolt assembly of this embodiment has a simple structure and can effectively prevent the bolts 3 from loosening.

The anti-loosening bolt assembly of this embodiment prevents the loosening of the bolt 3 through the locking of the first ring segment 4 and the second ring segment 5, the first ring segment 4 and the screw part 302 of the bolt 3 are fixedly connected, and the first ring segment Section 4 passes through the first threaded section provided on it and the first threaded through hole 102 on the connected part 1. When the bolt 3 is loosened, the bolt 3 will rotate and move upward, and the first ring section 4 will rotate accordingly, and the second ring section 4 will rotate accordingly. When the first ring segment 4 rotates, the slope 401 on the first ring segment 4 will abut against the second ring segment 5. Due to the existence of the slope 401, the force exerted by the first ring segment 4 on the second ring segment 5 is inclined upward. Due to the existence of the limiting member 6, the second ring segment 5 cannot follow the rotation of the bolt 3 and will lock the first ring segment 4 so that it cannot rotate.

In this embodiment, both inclined surfaces 401 of the first ring segment 4 are provided with blind holes 402 with openings facing upwards, and the second ring segment 5 is provided with protrusions that are mated with the blind holes 402 . 501, the side of the second ring segment 5 away from the axis of the bolt 3 is provided with a vertically extending groove 502, and the limiting groove 103 is provided with a raised strip 601 that matches the groove 502, Install the bolt 3 so that its screw part 302 is screwed into the second threaded hole 201, while the first ring section 4 is screwed into the first threaded hole 101, and the bolt 3 is continued to be rotated so that the gap of the first ring section 4 is in line with the limit on the connected part 1 The positioning grooves 103 are aligned, and then the second ring segment 5 and the limiting member 6 are installed, so that the convex strip 601 on the limiting member 6 is inserted into the groove 502 on the second ring segment 5 .

When the anti-loosening bolt 3 of this embodiment is used, the first threaded through hole 102 on the connected part 1 is coaxial with the second threaded through hole 102 on the connecting part 2, and the screw part 302 of the bolt 3 passes through the connected part. Part 1 cooperates with the second threaded through hole 102. After continuing to rotate, the first ring segment 4 cooperates with the first threaded hole 101, and then continues to rotate the bolt 3 so that the notch of the first ring segment 4 is in line with the stop on the connected part 1. The groove 103 is aligned, and then the second ring segment 5 and the stopper 6 are installed, so that the protrusion 601 on the stopper 6 is plugged into the groove 502 on the second ring segment 5. Preferably, the screw head A transition section 303 is provided between 301 and the screw part 302. After the assembly is completed, the transition section 303 passes through the through hole 102 at the bottom of the connected part 1. The screw head 301 in this embodiment adopts a hexagon bolt head.

The basic principles and main features of the present invention and the advantages of the utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and description are only illustrations The principle of the present utility model, under the premise of not departing from the inventive spirit and scope of the present invention, the present utility model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The desired protection is defined by the appended claims and their equivalents.

Claims (5)

1. An anti-loosening bolt assembly, which is used to connect a connected piece provided with a first threaded hole and a connecting piece provided with a second threaded hole, the first threaded hole and the second threaded hole have the same rotation direction and The diameter of the first threaded hole is greater than the diameter of the second threaded hole, and it is characterized in that: the anti-loosening bolt assembly includes a bolt, and the bolt includes a screw part and a screw head arranged on the upper end of the screw part, and the screw below the screw head A first ring segment with a central angle greater than 180 degrees is connected to the upper part, and the first ring segment is placed in the first threaded through hole. Both end faces of the first ring segment are sloped surfaces, and both The included angles between the two slopes and the top surface of the first ring segment are all obtuse angles, and the side of the first ring segment away from its center is provided with a first threaded segment matching with the first threaded hole, and the first ring segment is A second ring segment is also provided in the threaded through hole, and a limiting groove communicating with the first threaded through hole is provided on the connected piece, and a limiting member is arranged in the limiting groove, and the second ring segment and the The limiting member is fixed circumferentially, and the first ring segment is combined with the second ring segment to form a closed ring. 2. The anti-loosening bolt assembly according to claim 1, characterized in that: blind holes with openings facing upwards are provided on the two slopes of the first ring section, and blind holes with openings facing upwards are provided on the second ring section. Projection for blind mating mating. 3. The anti-loosening bolt assembly according to claim 1, characterized in that: a groove extending vertically is provided on the side of the second ring segment away from the axis of the bolt, and a groove corresponding to the The grooves fit the ribs. 4. The anti-loosening bolt assembly according to claim 1, wherein the screw head is a hexagonal bolt head. 5. The anti-loosening bolt assembly according to claim 1, wherein a transition section is provided between the screw head and the screw rod.

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