Fixed expansion bolt

Abstract

The utility model discloses a fixed expansion bolt which comprises a two-way retaining ring (1), a forward retaining ring (2), a nut (3), a screw rod (4), a clamp spring (5), a conical cap (6) and a reverse retaining ring (7). An integrated conical cap (6) is arranged on the screw rod (4), the screw rod (4) is respectively sleeved with the left-hand thread sleeve (7) and the two-way thread sleeve (1), the right-hand thread sleeve (2) is screwed into the nut (3), and the left-hand thread sleeve (7) is fixedly connected with the conical cap (6). The screw is provided with a plurality of reverse buckles, is not easy to loosen, cannot be separated from a wall body, and is safe and stable, and the screw cannot be bent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bolt technical field, and specifically relates to a fixed expansion bolt. BACKGROUND

[0002] The expansion bolt is a special threaded connecting piece used for fixing a pipeline support, a hanging bracket or equipment on a wall, a floor or a column. SUMMARY

[0003] The utility model discloses a fixed expansion bolt which is not easy to loosen, does not separate from the wall, is safe and stable, and the screw rod does not bend.

[0004] The utility model discloses a fixed expansion bolt which is not easy to loosen, does not separate from the wall, is safe and stable, and the screw rod does not bend.

[0005] The utility model discloses a fixed expansion bolt which is not easy to loosen, does not separate from the wall, is safe and stable, and the screw rod does not bend.

[0006] The both ends of the bidirectional buckle sleeve are respectively provided with the inclined buckle heads.

[0007] One end of the buckle sleeve is provided with the anti-bending sleeve, and the other end is provided with the inclined buckle head.

[0008] The reverse buckle sleeve is provided with the inclined buckle head.

[0009] The bidirectional buckle sleeve, the buckle sleeve and the reverse buckle sleeve are respectively provided with the clamping spring.

[0010] Compared with the prior art, this utility model has significant advantages. As can be seen from the above technical solution: a conical cap is integrally mounted on the screw rod, and a reverse-locking sleeve, a two-way locking sleeve, and a forward-locking sleeve are respectively fitted onto the screw rod and screwed into the nut. The reverse-locking sleeve is welded and fixed to the conical cap. Moving the nut pushes the forward-locking sleeve, causing the inclined surfaces of the forward-locking sleeve and the two-way locking sleeve to misalign, and the inclined surfaces of the two-way locking sleeve and the reverse-locking sleeve to misalign. The two retaining springs open, and the two-way locking sleeve, the forward-locking sleeve, and the reverse-locking sleeve protrude at an angle. The buckles of the two-way locking sleeve, the forward-locking sleeve, and the reverse-locking sleeve are respectively locked in the holes, preventing the expansion bolt from detaching from the hole in the wall. Multiple two-way locking sleeves can be installed according to actual conditions. The narrowed anti-bending sleeve at one end of the forward-locking sleeve has a small gap with the screw rod, preventing the screw rod from bending. This achieves multiple reverse locks, making it less prone to loosening, preventing it from detaching from the wall, ensuring safety and stability, and preventing the screw rod from bending. Attached Figure Description

[0011] Figure 1 This is the front view of this utility model;

[0012] Figure 2 This is an exploded view of this utility model;

[0013] Figure 3 This is a diagram showing the usage state of this utility model.

[0014] 1. Two-way snap sleeve, 2. Straight snap sleeve, 3. Nut, 4. Screw, 5. Snap ring, 6. Conical cap, 7. Reverse snap sleeve. Detailed Implementation

[0015] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structure, features, and effects of this utility model.

[0016] This utility model discloses a fixed expansion bolt, comprising a bidirectional snap sleeve 1, a forward snap sleeve 2, a nut 3, a screw 4, a retaining spring 5, a conical cap 6, and a reverse snap sleeve 7. The screw 4 is characterized by having an integral conical cap 6. The reverse snap sleeve 7, bidirectional snap sleeve 1, and forward snap sleeve 2 are respectively fitted onto the screw 4 and screwed into the nut 3. The reverse snap sleeve is welded to the conical cap for fixation. The bidirectional snap sleeve 1, forward snap sleeve 2, and reverse snap sleeve 3 are each provided with an inclined buckle. A retaining spring 5 is installed on each of the bidirectional snap sleeve 1, forward snap sleeve 2, and reverse snap sleeve 7.

[0017] When using, please refer to Figure 3 Move the nut 3, and the nut 3 pushes the straight-lock sleeve 2. The straight-lock sleeve and the double-lock sleeve 1 are misaligned on their inclined surfaces, and the double-lock sleeve 1 and the reverse-lock sleeve 7 are misaligned on their inclined surfaces. The two retaining springs 5 ​​open respectively, and the double-lock sleeve 1, straight-lock sleeve 2, and reverse-lock sleeve 7 protrude at an inclined angle. The buckles of the double-lock sleeve 1, straight-lock sleeve 2, and reverse-lock sleeve 7 are respectively locked in the hole to prevent the expansion bolt from coming out of the hole in the wall. Multiple double-lock sleeves 1 can be installed according to the actual situation.

[0018] 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. Any simple 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 fixed expansion bolt, comprising a bidirectional snap sleeve (1), a forward snap sleeve (2), a nut (3), a screw (4), a retaining ring (5), a conical cap (6), and a reverse snap sleeve (7), characterized in that; A conical cap (6) is provided on the screw (4). A reverse sleeve (7), a double sleeve (1), and a forward sleeve (2) are respectively fitted on the screw (4) and screwed into the nut (3). The reverse sleeve (7) and the conical cap (6) are welded and fixed.

2. The fixed expansion bolt as described in claim 1, characterized in that; The two-way buckle (1) has inclined buckles at both ends.

3. The fixed expansion bolt as described in claim 1, characterized in that; One end of the snap fastener (2) is provided with a constricted anti-bending sleeve, and the other end of the snap fastener (2) is provided with an inclined buckle.

4. The fixed expansion bolt as described in claim 1, characterized in that; The reverse buckle (7) is provided with an inclined buckle.

5. The fixed expansion bolt as described in claim 1, characterized in that; The bidirectional buckle (1), the forward buckle (2), and the reverse buckle (7) are respectively equipped with snap rings (5).

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