CN210769779U - Anti-loosening conical double nut - Google Patents
Anti-loosening conical double nut Download PDFInfo
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- CN210769779U CN210769779U CN201921731076.6U CN201921731076U CN210769779U CN 210769779 U CN210769779 U CN 210769779U CN 201921731076 U CN201921731076 U CN 201921731076U CN 210769779 U CN210769779 U CN 210769779U
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Abstract
The utility model discloses an anti-loosening conical double nut, which relates to the technical field of fasteners and comprises a main nut and an auxiliary nut, wherein the upper part of the main nut is provided with a conical groove, the conical groove is larger than the inner diameter of a screw hole of the main nut, and the lower part of the auxiliary nut is provided with a conical section matched with the conical groove; the surface of the conical groove is smooth, and the surface of the conical section is provided with a plurality of slots. The utility model discloses can solve current nut and shake not hard up problem because of the work piece is long-time.
Description
Technical Field
The utility model belongs to the technical field of the fastener technique and specifically relates to an anti-looseness cone type double nut.
Background
The nut is a part screwed together with a bolt or a screw rod to play a fastening role and is mainly used for fastening two or more workpieces, when the workpieces move violently, for example, in an electric tool, the nut vibrates violently along with the workpieces and moves relatively to the workpieces to generate friction, and the nut is easy to rotate backwards from the bolt under the condition of the existence of the friction, so that the nut is withdrawn from the bolt and cannot be stably connected with the workpieces, the workpieces are loosened, fastened objects are loosened, various losses are caused, safety is threatened seriously, in order to avoid loosening hidden dangers, a large amount of manpower and material resources are needed for periodic inspection, and the use cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem to provide an anti-looseness awl type double nut to solve current nut and shake not hard up problem because of the work piece for a long time.
In order to solve the above problem, the utility model discloses a technical scheme is: the nut comprises a main nut and an auxiliary nut, wherein a conical groove is formed in the upper portion of the main nut and is larger than the inner diameter of a screw hole of the main nut, and a conical section matched with the conical groove is formed in the lower portion of the auxiliary nut.
In the above technical solution, a more specific technical solution may also be: the surface of the conical groove is smooth, and the surface of the conical section is provided with a plurality of slots.
Further: the taper-shaped groove is at an angle A with the horizontal direction, the angle A is 30 degrees to 60 degrees, the taper section is at an angle B with the vertical direction, and the angle B is 60 degrees to 30 degrees.
Further: the angle A and the angle B are both 45 degrees.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. through the inclined surface contact formed between the conical groove of the main nut and the conical section of the auxiliary nut, when the main nut rotates backwards under the vibration of a workpiece, the conical groove cannot continuously retreat under the resistance of the conical section of the auxiliary nut, so that the anti-loosening effect is achieved;
2. a plurality of slots are seted up through the conical section of the smooth vice nut of the taper type recess surface machining of main nut, when the main nut received the vibrations of work piece when rotating backward, the taper type recess circle can push up vice nut, because the conical section of vice nut has the space of slot, the conical section can produce the internal diameter shrink and hold the bolt tightly, the thread on vice nut and the bolt produces very big frictional force, the power that the main nut received the vibrations backset is big more, then the power that the bolt was held tightly to the conical section shrink of vice nut is just big more, no matter how big vibrations of work piece have can not retreat, and the smooth vice nut that can't drive in taper type recess surface retreats, locking effect is better.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a working sectional view of the present invention.
Detailed Description
The invention will be described in more detail with reference to the following examples:
the anti-loosening conical double nut shown in the figure 1 comprises a main nut 1 and an auxiliary nut 2, wherein the upper part of the main nut 1 is provided with a conical groove 1-1, the inner diameter of the conical groove 1-1 is larger than that of a screw hole of the main nut 1, and the lower part of the auxiliary nut 2 is provided with a conical section 2-1 matched with the conical groove 1-1; the surface of the conical groove 1-1 is smooth, and the surface of the conical section 2-1 is provided with a plurality of slots 2-2; the conical groove 1-1 forms an angle A with the horizontal direction, the angle A is 30-60 degrees, the conical section 2-1 forms an angle B with the vertical direction, and the angle B is 60-30 degrees; both angle a and angle B are 45 degrees.
When the anti-loosening bolt is used, as shown in fig. 2, after the bolt 3 penetrates through the first workpiece 5 and the second workpiece 4, the main nut 1 and the auxiliary nut 2 are sequentially screwed on the bolt 3, when the main nut 1 rotates backwards under the vibration of the workpieces, the conical groove 1-1 can prop against the auxiliary nut 2, as the conical section 2-1 of the auxiliary nut 2 has a space with the cutting seam 2-2, the conical section 2-1 can contract in inner diameter to clamp the bolt 3, the auxiliary nut 2 and the thread on the bolt 3 generate great friction force, the larger the retreating force of the main nut 1 under the vibration is, the larger the retreating force of the conical section 2-1 of the auxiliary nut 2 is, the larger the retreating force of the auxiliary nut 2 is, the retreating force of the bolt 3 is the larger, the workpiece cannot retreat no matter how much vibration exists, the surface of the conical groove 1-1 is smooth, the auxiliary nut 2 cannot be driven to retreat, and the anti-loosening. When the bolt 3 needs to be dismounted from the first workpiece 5 and the second workpiece 4, the main nut 1 can be unscrewed only by unscrewing the auxiliary nut 2, when the angle a is smaller than 30 degrees and the angle B is larger than 60 degrees, the effect that the conical section 2-1 of the auxiliary nut 2 is stressed to shrink to clasp the bolt 3 is not good, and when the angle a is larger than 60 degrees and the angle B is smaller than 30 degrees, the effect that the conical section 2-1 of the auxiliary nut 2 is stressed to shrink to clasp the bolt 3 is too good, so that the auxiliary nut 2 is difficult to unscrew from the bolt 3, and therefore in the embodiment, the angle a and the angle B are both set to be 45 degrees.
Claims (4)
1. The utility model provides an anti-loosening conical double nut which characterized in that: the nut comprises a main nut and an auxiliary nut, wherein a conical groove is formed in the upper portion of the main nut and is larger than the inner diameter of a screw hole of the main nut, and a conical section matched with the conical groove is formed in the lower portion of the auxiliary nut.
2. The anti-loosening cone-type double nut as defined in claim 1, wherein: the surface of the conical groove is smooth, and the surface of the conical section is provided with a plurality of slots.
3. The anti-loosening cone-type double nut as defined in claim 1 or 2, wherein: the taper-shaped groove is at an angle A with the horizontal direction, the angle A is 30 degrees to 60 degrees, the taper section is at an angle B with the vertical direction, and the angle B is 60 degrees to 30 degrees.
4. The anti-loosening cone-type double nut as defined in claim 3, wherein: the angle A and the angle B are both 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731076.6U CN210769779U (en) | 2019-10-16 | 2019-10-16 | Anti-loosening conical double nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731076.6U CN210769779U (en) | 2019-10-16 | 2019-10-16 | Anti-loosening conical double nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769779U true CN210769779U (en) | 2020-06-16 |
Family
ID=71046667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921731076.6U Active CN210769779U (en) | 2019-10-16 | 2019-10-16 | Anti-loosening conical double nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769779U (en) |
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2019
- 2019-10-16 CN CN201921731076.6U patent/CN210769779U/en active Active
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