Stably-locked expansion bolt
By designing a locked and stable expansion bolt including expansion sleeve, fixing barb, extrusion end and auxiliary fixing, the problem of poor fixability of existing expansion bolts is solved, and a firmer and more stable fixing effect is achieved and safety is improved.
Patent Information
- Application Number
- CN202421520696.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Existing expansion bolts have poor fixity when fixing equipment, which is easy to shake or rotate, resulting in poor fixing effect and poses safety hazards.
A locked and stable expansion bolt is designed including a bolt rod, an expansion sleeve, a fixing barb, an extrusion end, an expansion groove, a washer, a nut and an auxiliary fixture. Through the expansion of the expansion sleeve and the twisting of the auxiliary fixing parts, a firmer fixation is achieved, and the stability is enhanced through the extrusion of the extrusion end.
A more stable fixing effect is achieved, avoiding the bolts rotating or sliding during use, and improving the firmness and safety of the equipment.
Smart Images
Figure CN222650300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fasteners, in particular to a firmly locked expansion bolt. Background Art
[0002] Expansion bolts are a special type of threaded connector, which are mainly used to fix pipes and other equipment on walls, floors, and columns. However, the existing expansion bolts have poor fixation during use and are prone to shaking or rotating, resulting in poor fixing effect and prone to danger. Therefore, a device is needed to solve the above problems. Utility Model Content
[0003] The purpose of the utility model is to provide a locking and stable expansion bolt to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locked and stable expansion bolt, comprising a bolt rod, an expansion sleeve, a fixed barb, an extrusion end, an expansion groove, a washer, a nut and an auxiliary fixing piece, the expansion groove being evenly arranged on the expansion sleeve, the expansion sleeve being sleeved on the bolt rod, the nut being threadedly rotatably mounted on the upper end of the bolt rod, the washer being arranged between the nut and the upper end of the expansion sleeve, the auxiliary fixing piece being arranged inside the bolt rod, the extrusion end being fixedly connected to the bottom end of the bolt rod, the fixed barb being evenly fixedly mounted on the expansion sleeve, a threaded control hole being arranged inside the bolt rod, and a slotted hole being arranged inside the extrusion end.
[0005] Preferably, the auxiliary fixing member comprises an auxiliary fixing bolt and a thread tip, and the thread tip is fixedly connected to the bottom end of the auxiliary fixing bolt.
[0006] Preferably, the auxiliary fixing bolt is threadedly arranged inside the thread control hole, and the thread tip is located inside the slotted hole.
[0007] Preferably, extrusion protrusions are evenly and fixedly arranged on the extrusion end head.
[0008] Preferably, the upper end of the extrusion protrusion is arranged in a smooth arc shape.
[0009] Preferably, extrusion grooves are evenly formed inside the bottom end of the expansion sleeve, and the extrusion grooves are matched with the extrusion protrusions.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] After the utility model is fixed by expansion through the expansion sleeve, the fixing barbs evenly arranged on the expansion sleeve play a role in stable anti-falling off, and after the bolt rod and the expansion sleeve are fixed, the auxiliary fixing bolt is inserted into the inside of the threaded control hole by screwing, and the end of the auxiliary fixing bolt is continuously screwed by the tool so that the thread tip is discharged from the inside of the slot hole and fixed to the workpiece again, thereby achieving the role of auxiliary fixation and locking again, making the bolt body more firm and stable during use, and when the extrusion end squeezes the bottom end of the expansion sleeve, each extrusion protrusion is squeezed and inserted into the inside of the extrusion groove, and then the bottom end of the expansion sleeve is evenly squeezed at the protruding part, which plays a role of auxiliary stability, so that the bolt body will not rotate or slide during use, and is more firm and stable during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the main body split structure in the utility model;
[0014] Figure 3 This is a schematic diagram of the extrusion end structure in the utility model;
[0015] Figure 4 It is a schematic diagram of the auxiliary fixing member structure in the utility model.
[0016] In the figure: 2-bolt rod, 3-expansion sleeve, 4-fixing barb, 5-extrusion end, 6-extrusion protrusion, 7-expansion groove, 8-washer, 9-nut, 10-auxiliary fixing piece, 11-threaded control hole, 12-slot hole, 13-extrusion groove, 14-auxiliary fixing bolt, 15-threaded tip. DETAILED DESCRIPTION
[0017] 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.
[0018] See also Figure 1-4The utility model provides an embodiment: a locked and stable expansion bolt, comprising a bolt rod 2, an expansion sleeve 3, a fixed barb 4, an extrusion end 5, an expansion groove 7, a washer 8, a nut 9 and an auxiliary fixing piece 10, the expansion groove 7 is evenly arranged on the expansion sleeve 3, the expansion sleeve 3 is sleeved on the bolt rod 2, the nut 9 is threadedly rotated and installed on the upper end of the bolt rod 2, the washer 8 is arranged between the nut 9 and the upper end of the expansion sleeve 3, the auxiliary fixing piece 10 is arranged inside the bolt rod 2, the extrusion end 5 is fixedly connected to the bottom end of the bolt rod 2, the fixed barb 4 is evenly fixedly installed on the expansion sleeve 3, a threaded control hole 11 is opened inside the bolt rod 2, and a slot 12 is opened inside the extrusion end 5.
[0019] The auxiliary fixing member 10 includes an auxiliary fixing bolt 14 and a thread tip 15. The thread tip 15 is fixedly connected to the bottom end of the auxiliary fixing bolt 14. The auxiliary fixing bolt 14 is threadedly arranged inside the thread control hole 11. The thread tip 15 is located inside the slot 12 to play the role of auxiliary fixing and locking.
[0020] An extrusion protrusion 6 is evenly and fixedly arranged on the extrusion end head 5, and the upper end of the extrusion protrusion 6 is arranged in an arc-shaped and smooth shape. An extrusion groove 13 is evenly opened inside the bottom end of the expansion sleeve 3, and the extrusion groove 13 is adapted to the extrusion protrusion 6. By extruding the extrusion protrusion 6 to squeeze the inside of the extrusion groove 13, a raised fixed edge can be evenly formed on the bottom end of the expansion sleeve 3.
[0021] Working principle: During use, by screwing the nut 9, the extrusion end head 5 will squeeze the bottom end of the expansion sleeve 3, and the expansion groove 7 is evenly set at the bottom end of the expansion groove 7, so that the bottom end of the expansion sleeve 3 begins to deform and expand, thereby achieving fixation. The evenly set fixing barbs 4 on the expansion sleeve 3 play a role in stable anti-falling. After the bolt rod 2 and the expansion sleeve 3 are fixed, the auxiliary fixing bolt 14 is inserted into the inside of the threaded control hole 11 by screwing, and the end of the auxiliary fixing bolt 14 is continuously screwed by the tool so that the thread tip 15 is discharged from the inside of the slot 12 and fixed to the workpiece again, achieving the role of auxiliary fixation and locking again, so that the bolt body is more firm and stable during use, and when the extrusion end head 5 squeezes the bottom end of the expansion sleeve 3, each extrusion protrusion 6 is squeezed and inserted into the inside of the extrusion groove 13, and then the bottom end of the expansion sleeve 3 is evenly squeezed at the protruding part, which plays a role of auxiliary stability, so that the bolt body will not rotate or slide during use, and it is more firm and stable during use.
[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A locking and firmly locked expansion bolt, comprising a bolt rod (2), an expansion sleeve (3), a fixing barb (4), an extrusion end (5), an expansion groove (7), a washer (8), a nut (9) and an auxiliary fixing member (10), characterized in that: The expansion groove (7) is evenly arranged on the expansion sleeve (3), the expansion sleeve (3) is sleeved on the bolt rod (2), the nut (9) is threadedly mounted on the upper end of the bolt rod (2), the washer (8) is arranged between the nut (9) and the upper end of the expansion sleeve (3), the auxiliary fixing member (10) is arranged inside the bolt rod (2), the extrusion end head (5) is fixedly connected to the bottom end of the bolt rod (2), the fixing barb (4) is evenly fixedly mounted on the expansion sleeve (3), a threaded control hole (11) is arranged inside the bolt rod (2), and a slot hole (12) is arranged inside the extrusion end head (5).
2. The locking and stable expansion bolt according to claim 1, characterized in that: The auxiliary fixing member (10) comprises an auxiliary fixing bolt (14) and a thread tip (15), wherein the thread tip (15) is fixedly connected to the bottom end of the auxiliary fixing bolt (14).
3. The locking and stable expansion bolt according to claim 2, characterized in that: The auxiliary fixing bolt (14) is threadably arranged inside the thread control hole (11), and the thread tip (15) is located inside the slotted hole (12).
4. The locking and stable expansion bolt according to claim 3, characterized in that: Extrusion protrusions (6) are evenly and fixedly arranged on the extrusion end head (5).
5. The locking and stable expansion bolt according to claim 4, characterized in that: The upper end of the extrusion protrusion (6) is arranged in an arc-shaped and smooth shape.
6. The locking and stable expansion bolt according to claim 5, characterized in that: Extrusion grooves (13) are evenly arranged inside the bottom end of the expansion sleeve (3), and the extrusion grooves (13) are adapted to the extrusion protrusions (6).