CN213478906U - Retaining structure - Google Patents
Retaining structure Download PDFInfo
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- CN213478906U CN213478906U CN202022318809.2U CN202022318809U CN213478906U CN 213478906 U CN213478906 U CN 213478906U CN 202022318809 U CN202022318809 U CN 202022318809U CN 213478906 U CN213478906 U CN 213478906U
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- thread
- fastening
- nut
- fastening nut
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Abstract
The utility model relates to a technical field of fastener particularly, relates to a stopping structure, including screw rod, fastening nut and lock nut. The screw rod is provided with a fastening thread and a check thread respectively in cooperation with the fastening nut and the check nut. The pitch of the fastening thread and the pitch of the anti-loosening thread are different. When the locking nut is used, if the fastening nut is loosened to some extent and rotates, the screw pitch of the fastening thread is different from that of the locking thread, the fastening nut and the locking nut rotate by the same angle, and the moving distances of the fastening nut and the locking nut along the screw rod are different, so that the fastening nut and the locking nut cannot rotate synchronously. That is, the locknut imparts resistance to rotation of the fastening nut, thereby preventing rotation of the fastening nut.
Description
Technical Field
The utility model relates to a technical field of fastener particularly, relates to a stopping structure.
Background
Fasteners are the most common parts of various devices used to secure or connect various components in the device. Mechanical devices are often accompanied by vibrations during use. Conventional threaded connections can become loose during vibration, thereby making the device unstable to operation.
In the prior art, various anti-loosening nuts are available, but the use effect is general.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stopping structure, it can avoid the nut not hard up under the vibrations environment.
The embodiment of the utility model discloses a realize through following technical scheme:
a retaining structure comprises a screw, a fastening nut and a locknut; the screw is respectively matched with the fastening nut and the locknut and is provided with a fastening thread and a lockthread; the thread pitch of the fastening thread and the thread pitch of the anti-loosening thread are different.
Further, the anti-loosening thread is arranged at the tail end of the screw rod; the screw rod is in a stepped shaft shape; the anti-loosening thread is arranged at the small-diameter end of the screw rod.
Further, the fastening thread extends along the screw from a small-diameter end of the screw to the other end of the screw.
Furthermore, a supporting ring for supporting the fastening nut and the locknut is arranged between the fastening nut and the locknut.
Furthermore, an annular groove for accommodating the abutting ring is formed in the end face of one end, close to the fastening nut, of the locknut.
Furthermore, the abutting ring comprises a male head ring, a female head ring and a connecting ring; a male head is arranged at one end of the male head ring; the outer wall of the male head is arranged in a step shape; the small-diameter end of the male head is arranged at the tail end of the male head;
a female head is arranged at one end of the female head ring; the inner wall of the female head is arranged in a step shape; the large-diameter end of the female head is arranged at the tail end of the female head; the male head can be contained in the female head;
and a male head is arranged at one end of the connecting ring, and a female head is arranged at the other end of the connecting ring.
Further, the pitch of the anti-loosening thread is smaller than that of the fastening thread.
The utility model discloses technical scheme has following advantage and beneficial effect at least:
the utility model discloses a during the stopping structure used, can tentatively fasten through fastening nut and fastening thread's cooperation. Subsequently, the locknut is screwed to the lockthread and is made to abut against the fastening nut. After the locknut and the fastening nut are abutted tightly, the fastening nut and the fastening thread can be abutted tightly and abutted tightly, the abutting degree is larger, the friction force is larger, and the looseness prevention of the locknut and the fastening nut is facilitated.
When the equipment is used, if the fastening nut is loosened to some extent and rotates, the screw pitch of the fastening thread is different from that of the anti-loosening thread, the fastening nut and the anti-loosening nut rotate by the same angle, and the moving distances of the fastening nut and the anti-loosening nut along the screw rod are different, so that the fastening nut and the anti-loosening nut cannot rotate synchronously. That is, the locknut imparts resistance to rotation of the fastening nut, thereby preventing rotation of the fastening nut.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a retaining structure provided in embodiment 1 of the present invention without a retaining ring;
fig. 2 is a schematic structural diagram of a retaining structure provided with a retaining ring according to embodiment 1 of the present invention.
Icon: 1-screw rod, 11-fastening screw thread, 12-anti-loose screw thread, 2-fastening nut, 3-anti-loose nut, 31-annular groove, 4-abutting ring, 41-male head ring, 42-female head ring and 43-connecting ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of this application is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and be operated is not to be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1 and 2, the utility model provides a retaining structure, including screw rod 1, fastening nut 2 and locknut 3. The shank 1 may be the shank 1 portion of a bolt. The screw 1 is provided with a fastening thread 11 and a check thread 12 respectively matching with the fastening nut 2 and the check nut 3. The pitch of the fastening thread 11 and the pitch of the check thread 12 are different.
The utility model discloses a stopping structure when using, can tentatively fasten through fastening nut 2 and fastening thread 11's cooperation. I.e. the parts to be fastened will be fixed by means of the fastening nut 2. Subsequently, the locknut 3 is tightened to the lockthread 12 and the locknut 3 is made to abut against the fastening nut 2. After the locknut 3 and the fastening nut 2 are abutted, the locknut 2 and the fastening thread 11 are abutted tightly and the locknut 3 and the lockthread 12 are abutted tightly by continuously screwing, the abutting degree is larger, the friction force is larger, the locknut 3 and the fastening nut 2 are difficult to rotate relative to the screw rod 1, and the looseness of the locknut 3 and the fastening nut 2 is prevented.
When the equipment is used, if the fastening nut 2 is loosened to some extent and rotates, because the thread pitch of the fastening thread 11 is different from that of the anti-loosening thread 12, the fastening nut 2 and the anti-loosening nut 3 rotate by the same angle and the moving distances of the two along the screw rod 1 are different, so that the two can not rotate synchronously. That is, the lock nut 3 gives resistance when the fastening nut 2 rotates, thereby preventing the fastening nut 2 from rotating.
In this embodiment, the check thread 12 is provided at the end of the screw 1. The screw 1 is in a stepped shaft shape. The check thread 12 is provided at the small diameter end of the screw 1. That is, the end of the screw 1 is a small diameter end. If the outer diameter of the end of the screw 1 is greater than or equal to the outer diameter of the other part of the screw 1, the fastening nut 2 cannot be sleeved on the screw 1 through the end of the screw 1. This arrangement allows the fastening nut 2 to be smoothly fitted over the fastening thread 11 and tightened.
In this embodiment, the fastening screw 11 extends along the screw 1 from the small diameter end of the screw 1 to the other end of the screw 1. This just makes the distance that fastening nut 2 can move along screw rod 1 very long, makes the utility model discloses a range that stopping structure can use is bigger.
In this embodiment, a tightening ring 4 for tightening the fastening nut 2 and the locknut 3 is further disposed between the fastening nut 2 and the locknut 3. When the locknut 3 is screwed to the end of the lockthread 12, if the locknut 3 still can not support the fastening nut 2 tightly, the supporting ring 4 is added between the fastening nut 2 and the locknut 3.
In this embodiment, an end surface of the locknut 3 near one end of the fastening nut 2 is provided with an annular groove 31 for accommodating the abutting ring 4. Since the tightening ring 4 needs to be sleeved outside the fastening thread 11. That is, the inner diameter of the tightening ring 4 is larger than the outer diameter of the screw 1 at the fastening thread 11, and is larger than the outer diameter of the screw 1 at the locking thread 12. In order to avoid that the abutting ring 4 is offset from the position where the anti-loose thread 12 can be arranged relative to the screw 1 along the direction perpendicular to the radial direction of the screw 1 by too large a position to affect the effect of the abutting ring 4 abutting against the fastening nut 2 and the anti-loose nut 3, the end surface of the anti-loose nut 3 close to one end of the fastening nut 2 is provided with an annular groove 31 for accommodating the abutting ring 4. The abutting ring 4 is accommodated in the annular groove 31, so that the radial offset of the abutting ring 4 relative to the screw rod 1 can be avoided, and the effect of abutting the abutting ring 4 against the fastening nut 2 and the locknut 3 is further ensured.
In this embodiment, the tightening ring 4 includes a male ring 41, a female ring 42, and a connecting ring 43. One end of the male head ring 41 is provided with a male head. The outer wall of the male head is arranged in a ladder shape. The small diameter end of the male head is arranged at the tail end of the male head.
The female ring 42 has a female end at one end. The inner wall of the female head is arranged in a step shape. The big-diameter end of the female head is arranged at the tail end of the female head. The male head can be accommodated in the female head. One end of the connecting ring 43 is provided with a male head, and the other end is provided with a female head.
In practice, the number of the connection rings 43 may be plural or none. The specific number of the connection rings 43 may be set according to the distance from the locknut 3 to the fastening nut 2, so that the locknut 3 can abut against the fastening nut 2 through the abutting ring 4.
In the present embodiment, the pitch of the check thread 12 is smaller than the pitch of the fastening thread 11. That is, when the fastening nut 2 and the locknut 3 rotate by the same angle, the distance that the fastening nut 2 moves along the screw 1 is greater than the distance that the locknut 3 moves along the screw 1. Under the same vibration condition, the loosening amplitude of the fastening nut 2 is larger than that of the locknut 3. In this process, the locknut 3 always gives resistance to the fastening nut 2, thereby preventing the fastening nut 2 from loosening.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A retaining structure is characterized in that: comprises a screw rod (1), a fastening nut (2) and a locknut (3); the screw (1) is respectively matched with the fastening nut (2) and the locknut (3) and is provided with a fastening thread (11) and a lockthread (12); the thread pitch of the fastening thread (11) and the thread pitch of the anti-loosening thread (12) are different.
2. The backstop structure according to claim 1, characterized in that: the anti-loosening thread (12) is arranged at the tail end of the screw (1); the screw (1) is in a stepped shaft shape; the anti-loosening thread (12) is arranged at the small-diameter end of the screw (1).
3. The backstop structure according to claim 2, characterized in that: the fastening thread (11) extends from the small-diameter end of the screw (1) to the other end of the screw (1) along the screw (1).
4. The backstop structure according to claim 3, characterized in that: and a butting ring (4) which is used for butting against the fastening nut (2) and the locknut (3) is also arranged between the fastening nut (2) and the locknut (3).
5. The backstop structure according to claim 4, characterized in that: the end face of one end, close to the fastening nut (2), of the locknut (3) is provided with an annular groove (31) for accommodating the abutting ring (4).
6. The backstop structure according to claim 5, characterized in that: the abutting ring (4) comprises a male head ring (41), a female head ring (42) and a connecting ring (43); a male head is arranged at one end of the male head ring (41); the outer wall of the male head is arranged in a step shape; the small-diameter end of the male head is arranged at the tail end of the male head;
a female head is arranged at one end of the female head ring (42); the inner wall of the female head is arranged in a step shape; the large-diameter end of the female head is arranged at the tail end of the female head; the male head can be contained in the female head;
one end of the connecting ring (43) is provided with a male head, and the other end is provided with a female head.
7. The backstop structure according to claim 1, characterized in that: the thread pitch of the anti-loosening thread (12) is smaller than that of the fastening thread (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318809.2U CN213478906U (en) | 2020-10-16 | 2020-10-16 | Retaining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318809.2U CN213478906U (en) | 2020-10-16 | 2020-10-16 | Retaining structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213478906U true CN213478906U (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022318809.2U Active CN213478906U (en) | 2020-10-16 | 2020-10-16 | Retaining structure |
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| CN (1) | CN213478906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847325A (en) * | 2021-09-13 | 2021-12-28 | 中国重汽集团济南动力有限公司 | Drive axle shaft head locking structure and assembling and disassembling operation method thereof |
-
2020
- 2020-10-16 CN CN202022318809.2U patent/CN213478906U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847325A (en) * | 2021-09-13 | 2021-12-28 | 中国重汽集团济南动力有限公司 | Drive axle shaft head locking structure and assembling and disassembling operation method thereof |
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