CN213541027U - Anti-loosening bolt assembly - Google Patents
Anti-loosening bolt assembly Download PDFInfo
- Publication number
- CN213541027U CN213541027U CN202022650451.3U CN202022650451U CN213541027U CN 213541027 U CN213541027 U CN 213541027U CN 202022650451 U CN202022650451 U CN 202022650451U CN 213541027 U CN213541027 U CN 213541027U
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- nut
- bolt
- movable block
- loosening
- head
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Abstract
The anti-loosening bolt assembly comprises a bolt rod, an anti-loosening head, a nut and a spring washer; the bolt rod comprises a screw rod and a bolt head, and a threaded hole is formed in the other end of the screw rod; the anti-loosening head is cylindrical, a stud is arranged at one end of the anti-loosening head, the rotating direction of the external thread of the stud is opposite to that of the external thread of the bolt rod, a recess is formed in the other end of the anti-loosening head, a movable block is arranged in the recess, the movable block is hexagonal, the movable block is connected with the bottom of the recess through a rebounding device, and when the rebounding device is in a rebounding state, one side, far away from the rebounding device, of the movable block exceeds; the stud on the anti-loosening head is screwed with the threaded hole on the screw rod; the nut is a cylinder with an opening at one end, internal threads are arranged in the cylinder, an annular extension part is arranged at the opening end of the nut in the circumferential direction, and a hexagonal through hole is formed at the other end of the nut; the spring washer is attached to the open end of the nut, and the diameter of the middle hole of the spring washer is matched with the diameter of the inner hole of the nut. The nut and the bolt rod of the assembly are locked through the anti-loosening head, so that looseness cannot occur, and the connection stability is guaranteed.
Description
Technical Field
The utility model relates to a locking bolt assembly that moves.
Background
Bolt assembly includes shank of bolt and nut, and the nut often can appear not hard up problem when being the connecting piece, and prior art's solution is to add spring washer, thereby increases the effect of inseparable degree play stopping between the thread, but the effect is not obvious, when being applied to the mechanical parts of frequent vibrations especially, still can take place not hard up risk.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a locking bolt assembly that moves is provided, through the locking of locking head that loosens between its nut and the shank of bolt, can not take place not hard up, guarantees the stability of connecting.
In order to solve the technical problem, the utility model provides an anti-loosening bolt assembly, which comprises a bolt rod, an anti-loosening head, a nut and a spring washer;
the bolt rod comprises a screw rod and a bolt head arranged at one end of the screw rod, and a threaded hole is formed in the middle area of the end face of the other end of the screw rod;
the anti-loosening head is cylindrical, the diameter of the anti-loosening head is matched with that of the screw rod, a stud matched with the threaded hole is arranged at one axial end of the anti-loosening head, the rotating direction of the external thread of the stud is opposite to that of the external thread of the bolt rod, a recess is arranged on the end face of the other axial end of the anti-loosening head, a movable block is arranged in the recess, the movable block is hexagonal, the movable block is connected with the bottom of the recess through a rebound device, and when the rebound device is in a rebound state, one side, far away from the rebound device, of;
the stud on the anti-loosening head is screwed with the threaded hole on the screw rod;
the nut is a cylinder with an open end, the inner side of the cylinder close to the open end is provided with an internal thread matched with the screw rod, the circumferential direction of one end of the open end of the nut is provided with an annular extension part extending along the radial direction of the annular extension part, and the middle area of the end surface of the other end of the nut is provided with a hexagonal through hole matched with the movable block;
the spring washer is attached to the open end of the nut, and the diameter of the middle hole of the spring washer is matched with the diameter of the inner hole of the nut.
For the sake of simple explanation, the anti-loosening bolt assembly of the present invention is simply referred to as the present assembly below.
The use method of the assembly comprises the following steps: during the use, at the position of pre-connection with shank of bolt and nut cooperation, wherein spring washer pastes with the open one end of nut and leans on, then presses the movable block, under the effect of bounce-back ware, the movable block pops out the concave yield and surpasss the hexagon through-hole of nut, and the movable block cooperates with the hexagon through-hole, because the external screw thread of double-screw bolt and the external screw thread of shank of bolt revolve to opposite, forms the auto-lock structure through lock nut and shank of bolt to make this subassembly can not become flexible.
The advantages of this subassembly: in the assembly, the nut and the bolt rod are locked through the anti-loosening head, so that looseness cannot occur, and the connection stability is ensured.
In order to achieve better using effect of the assembly, the preferable scheme is as follows:
preferably, one end of the movable block, which is far away from the rebounder, is provided with a guide part in the shape of a hexagonal frustum pyramid.
The movable block can more easily penetrate out of the hexagonal through hole through the guide part.
Drawings
Fig. 1 is a schematic view of the construction of the bolt shank of the present assembly.
Fig. 2 is a schematic view of the structure of the anti-loosening head of the present assembly.
Fig. 3 is a view from direction a of fig. 2.
Fig. 4 is a schematic view of the nut of the present assembly.
Fig. 5 is a view from direction B of fig. 4.
Fig. 6 is a schematic view of the use state of the present assembly.
Detailed Description
Referring to fig. 1-6, the anti-loosening bolt assembly comprises a bolt rod 1, an anti-loosening head 2, a nut 3 and a spring washer 4;
the bolt rod 1 comprises a screw rod and a bolt head arranged at one end of the screw rod, and a threaded hole is formed in the middle area of the end face of the other end of the screw rod;
the locking head 2 be cylindrical, its diameter and screw rod diameter phase-match, locking head 2 axial one end be equipped with screw hole assorted double-screw bolt 21, the external screw thread of double-screw bolt 21 is opposite with the external screw thread of shank of bolt 1 soon, be equipped with a concave recess 22 on the terminal surface of locking head 2 axial other end, be equipped with a movable block 23 in the concave recess 22, movable block 23 is hexagonal prism shape, the one end that bounce-back ware 24 was kept away from to movable block 23 is equipped with the guide part 231 of hexagonal frustum of a prism shape. The movable block 23 is connected with the bottom of the recess 22 through the rebounder 24, and when the rebounder 24 is in a rebounding state, one side, far away from the rebounder 24, of the movable block 23 exceeds the recess 22;
the stud 21 on the anti-loosening head 2 is screwed with the threaded hole on the screw rod;
the nut 3 is a cylinder with an open end, the inner side of the cylinder close to the open end is provided with internal threads matched with the screw (the inner diameter of the threaded part of the cylinder is smaller than that of the non-threaded part), the circumferential direction of one end of the open end of the nut 3 is provided with an annular extension part 31 extending along the radial direction of the end, and the middle area of the end surface of the other end of the nut 3 is provided with a hexagonal through hole 32 matched with the movable block 23;
the spring washer 4 is attached to the open end of the nut 3, and the diameter of the middle hole of the spring washer 4 is matched with the diameter of the inner hole of the nut 3. The spring washer 4 is deformed by more than one sixth of the screw pitch in the axial direction.
The use method of the assembly comprises the following steps: when the anti-loosening bolt assembly is used, the anti-loosening head 2 is connected with the bolt rod 1 in a screwing mode, then the movable block 23 is pressed into the concave groove 22 through the rebounding device 24, the bolt rod 1 is matched with the nut 3 at a pre-connected position (a part 5 in the embodiment), the spring washer 4 is attached to one open end of the nut 3 in a leaning mode, then the movable block 23 is pressed, under the action of the rebounding device 24, the movable block 23 is popped out of the concave groove 22 and exceeds the hexagonal through hole 32 of the nut 3, the movable block 23 is matched with the hexagonal through hole 32, due to the fact that the external thread of the stud 21 is opposite to the external thread of the bolt rod 1 in a screwing mode, the nut 3 and the bolt rod 1 form a self-locking structure through the anti-.
The advantages of this subassembly: in the assembly, the nut 3 and the bolt rod 1 are locked through the anti-loosening head 2, so that looseness cannot occur, and the connection stability is ensured.
The movable block 23 can more easily pass through the hexagonal through-hole 32 by the guide 231.
Claims (2)
1. Locking bolt assembly that moves, its characterized in that: comprises a bolt rod, an anti-loosening head, a nut and a spring washer;
the bolt rod comprises a screw rod and a bolt head arranged at one end of the screw rod, and a threaded hole is formed in the middle area of the end face of the other end of the screw rod;
the anti-loosening head is cylindrical, the diameter of the anti-loosening head is matched with that of the screw rod, a stud matched with the threaded hole is arranged at one axial end of the anti-loosening head, the rotating direction of the external thread of the stud is opposite to that of the external thread of the bolt rod, a recess is arranged on the end face of the other axial end of the anti-loosening head, a movable block is arranged in the recess, the movable block is hexagonal, the movable block is connected with the bottom of the recess through a rebound device, and when the rebound device is in a rebound state, one side, far away from the rebound device, of;
the stud on the anti-loosening head is screwed with the threaded hole on the screw rod;
the nut is a cylinder with an open end, the inner side of the cylinder close to the open end is provided with an internal thread matched with the screw rod, the circumferential direction of one end of the open end of the nut is provided with an annular extension part extending along the radial direction of the annular extension part, and the middle area of the end surface of the other end of the nut is provided with a hexagonal through hole matched with the movable block;
the spring washer is attached to the open end of the nut, and the diameter of the middle hole of the spring washer is matched with the diameter of the inner hole of the nut.
2. The anti-loosening bolt assembly according to claim 1, wherein: one end of the movable block, which is far away from the rebounder, is provided with a guide part in the shape of a hexagonal frustum pyramid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022650451.3U CN213541027U (en) | 2020-11-16 | 2020-11-16 | Anti-loosening bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022650451.3U CN213541027U (en) | 2020-11-16 | 2020-11-16 | Anti-loosening bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541027U true CN213541027U (en) | 2021-06-25 |
Family
ID=76482728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022650451.3U Active CN213541027U (en) | 2020-11-16 | 2020-11-16 | Anti-loosening bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253603A (en) * | 2020-11-16 | 2021-01-22 | 李天勇 | Anti-loosening bolt assembly |
-
2020
- 2020-11-16 CN CN202022650451.3U patent/CN213541027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253603A (en) * | 2020-11-16 | 2021-01-22 | 李天勇 | Anti-loosening bolt assembly |
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