CN210919755U - Closed double-screw anti-loosening assembly - Google Patents
Closed double-screw anti-loosening assembly Download PDFInfo
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- CN210919755U CN210919755U CN201921731077.0U CN201921731077U CN210919755U CN 210919755 U CN210919755 U CN 210919755U CN 201921731077 U CN201921731077 U CN 201921731077U CN 210919755 U CN210919755 U CN 210919755U
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Abstract
The utility model discloses a closed double-screw anti-loosening assembly, which relates to the technical field of fasteners, and comprises a main screw with a positive thread on a screw rod and an auxiliary screw with a reverse thread on the screw rod, wherein the main screw is provided with a through hole for the auxiliary screw to pass through, and the length of the auxiliary screw is longer than that of the main screw; the top end of the main screw nut is provided with an oblique tooth groove, and the bottom end of the auxiliary screw nut is provided with a gasket; the gasket is provided with a plurality of teeth. The utility model discloses can solve current screw because of the long-time not hard up problem of vibrations of work piece.
Description
Technical Field
The utility model belongs to the technical field of the fastener technique and specifically relates to a locking subassembly that moves of closed double screw.
Background
The screw is a common connecting piece, mainly comprises a nut and a screw rod, and can be used independently or matched with the nut. Mainly through the thread fastening two or more than two work pieces on the screw rod, the work piece is when violent the motion, if in electric tool, the screw is along with the violent vibrations of work piece, there is relative motion with the work piece, produce frictional force to the work piece, the screw easily takes place to slide under the condition that frictional force exists, thereby lead to the screw not hard up, can not stable with the work piece be connected, can make the screw produce not hard up, and the object that leads to the fastening loosens, light then lead to various losses, heavy then threatens the safety, in order to avoid the pine to take off the hidden danger, need a large amount of manpowers, material resources carry out periodic inspection, this use cost has just greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem to provide a locking subassembly that moves of two screws of closed to it is not hard up because of the long-time vibrations of work piece to solve current screw.
In order to solve the above problem, the utility model discloses a technical scheme is: the main screw with the positive threads and the auxiliary screw with the negative threads are arranged on the screw rod, a through hole for the auxiliary screw rod to pass through is formed in the main screw, and the length of the auxiliary screw rod is longer than that of the main screw.
In the above technical solution, a more specific technical solution may also be: the screw is characterized by further comprising a main nut matched with the main screw and an auxiliary nut matched with the auxiliary screw, wherein the internal thread of the screw hole of the main nut is a positive thread, and the internal thread of the screw hole of the auxiliary nut is a negative thread.
Further: the main nut is connected with the auxiliary nut through welding.
Further: the top end of the main screw nut is provided with an oblique tooth groove, and the bottom end of the auxiliary screw nut is provided with a gasket.
Further: the gasket is provided with a plurality of teeth.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. firstly, a main screw with positive threads is screwed into a workpiece, then an auxiliary screw with negative threads is screwed into the workpiece from a through hole of the main screw, and the main screw is fixed on the workpiece by the auxiliary screw through the combined application of the positive and negative threads, so that the main screw is prevented from loosening;
2. the inclined tooth grooves are formed in the top ends of the main screw nuts, the gaskets are arranged at the bottom ends of the auxiliary screw nuts, and when the main screw is rotated out of a workpiece in the forward direction under the vibration, certain resistance is formed between the gaskets and the teeth on the inclined tooth grooves, so that the main screw is prevented from being rotated out in the forward direction;
3. the gasket is provided with a plurality of teeth, the teeth on the gasket are driven into the oblique tooth groove by using a hammer or other tools, the main screw is subjected to resistance from the reverse direction of the auxiliary screw when the main screw is rotated out of the workpiece in the forward direction under the vibration, and the auxiliary screw is subjected to resistance from the forward direction of the main screw when the auxiliary screw is rotated out of the workpiece in the reverse direction under the vibration, so that the problem that the main screw and the auxiliary screw are loosened due to the vibration can be effectively solved.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 4 is a sectional view of a second embodiment of the present invention.
Detailed Description
The invention will be described in more detail with reference to the following examples:
the first embodiment is as follows:
the closed double-screw anti-loosening assembly shown in fig. 1 comprises a main screw 1 with a positive thread 1-1 on a screw rod and an auxiliary screw 2 with a negative thread 2-1 on the screw rod, wherein the main screw 1 is provided with a through hole for the screw rod of the auxiliary screw 2 to pass through, and the length of the screw rod of the auxiliary screw 2 is longer than that of the main screw 1; the top end of the main screw 1 and the nut is provided with an oblique tooth groove 1-2, and the bottom end of the auxiliary screw 2 and the nut is provided with a gasket 2-2; the pad 2-2 is provided with a plurality of teeth.
When the anti-loosening device is used, a large mounting hole is formed in a first workpiece 3 and a second workpiece 4, a small mounting hole is formed in the large mounting hole of the first workpiece 3, the first workpiece 3 and the second workpiece 4 are fastened by screwing a main screw 1 into the large mounting hole, an auxiliary screw 2 is screwed into the small mounting hole of the first workpiece 3 from a through hole 1-3 of the main screw 1, and finally teeth on a gasket 2-2 are driven into an oblique tooth groove 1-2 by a hammer to achieve the anti-loosening effect; if the main screw 1 needs to be screwed out, the teeth need to be separated from the inclined tooth grooves 1-2 by a tool, and the main screw 1 can be screwed out after the auxiliary screw 2 is screwed out, so that the embodiment is suitable for thicker workpieces, as shown in fig. 2.
Example two:
the closed double-screw anti-loosening assembly shown in fig. 3 comprises a main screw 1 with a positive thread 1-1 on a screw rod and an auxiliary screw 2 with a negative thread 2-1 on the screw rod, wherein the main screw 1 is provided with a through hole for the screw rod of the auxiliary screw 2 to pass through, and the length of the screw rod of the auxiliary screw 2 is longer than that of the main screw 1; the screw is characterized by further comprising a main nut 5 matched with the main screw 1 and an auxiliary nut 6 matched with the auxiliary screw 2, wherein the internal thread of the screw hole of the main nut 5 is a positive thread 5-1, and the internal thread of the screw hole of the auxiliary nut 6 is a negative thread 6-1; the main nut 5 is connected with the auxiliary nut 6 through welding; the top end of the main screw 1 and the nut is provided with an oblique tooth groove 1-2, and the bottom end of the auxiliary screw 2 and the nut is provided with a gasket 2-2; the pad 2-2 is provided with a plurality of teeth.
When the anti-loosening device is used, a mounting hole is formed in a first workpiece 3 and a second workpiece 4, then a main screw 1 is screwed into the mounting holes of the first workpiece 3 and the second workpiece 4, then the main nut 5 welded with an auxiliary nut 6 is screwed on the main screw 1 through a positive thread 5-1, then the auxiliary screw 2 is screwed into a reverse thread 6-1 of the auxiliary nut 6 from a through hole 1-3 of the main screw 1, and finally teeth on a gasket 2-2 are driven into an oblique tooth groove 1-2 by a hammer, so that the anti-loosening effect can be achieved; if the main screw 1 needs to be screwed out, the teeth need to be separated from the inclined tooth grooves 1-2 by a tool, and the main screw 1 can be screwed out after the auxiliary screw 2 is screwed out, so that the embodiment is suitable for thinner workpieces, as shown in fig. 4.
Claims (5)
1. The utility model provides a locking subassembly that moves of closed double screw which characterized in that: the main screw with the positive threads and the auxiliary screw with the negative threads are arranged on the screw rod, a through hole for the auxiliary screw rod to pass through is formed in the main screw, and the length of the auxiliary screw rod is longer than that of the main screw.
2. The closed double screw anti-loosening assembly of claim 1, wherein: the screw is characterized by further comprising a main nut matched with the main screw and an auxiliary nut matched with the auxiliary screw, wherein the internal thread of the screw hole of the main nut is a positive thread, and the internal thread of the screw hole of the auxiliary nut is a negative thread.
3. The closed double screw anti-loosening assembly of claim 2, wherein: the main nut is connected with the auxiliary nut through welding.
4. The closed double screw anti-loosening assembly according to claim 1 or 2, wherein: the top end of the nut of the main screw is provided with an oblique tooth groove, and the bottom end of the nut of the auxiliary screw is provided with a gasket.
5. The closed double screw anti-loosening assembly of claim 4, wherein: the gasket is provided with a plurality of teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731077.0U CN210919755U (en) | 2019-10-16 | 2019-10-16 | Closed double-screw anti-loosening assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731077.0U CN210919755U (en) | 2019-10-16 | 2019-10-16 | Closed double-screw anti-loosening assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210919755U true CN210919755U (en) | 2020-07-03 |
Family
ID=71350072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921731077.0U Active CN210919755U (en) | 2019-10-16 | 2019-10-16 | Closed double-screw anti-loosening assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210919755U (en) |
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2019
- 2019-10-16 CN CN201921731077.0U patent/CN210919755U/en active Active
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