Anti-loose and anti-theft nut assembly
By designing a combination of anti-theft nut, wire sleeve and screw, the anti-theft nut with increasing depth and rolling connection anti-theft parts are used to prevent the nut from falling back, and the anti-theft groove is closed with anti-theft nut, which solves the complex structure and high cost of existing anti-theft nuts. As for the poor anti-theft performance, the nut cannot be reversed after tightening and the anti-theft parts do not fall out.
Patent Information
- Application Number
- CN202323594445.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The existing anti-theft nuts have complex structure, high cost and poor anti-theft performance. They cannot recover after tightening the nuts, and the anti-theft parts are prone to fall out when not in use.
A component including an anti-theft nut, a wire sleeve and a screw is designed. The anti-theft nut is equipped with an anti-theft groove with an increasing depth and a rolling anti-theft piece. The external thread of the wire sleeve matches the internal thread of the anti-theft nut, and the anti-theft piece passes through the anti-theft groove. Prevent the wire sleeve from falling back and use anti-detachment parts to close the anti-theft groove to prevent it from falling out.
The anti-loosening and anti-theft function of the nut cannot be reversed after tightening, while reducing manufacturing costs, improving convenience of use, and preventing anti-theft parts from falling out when not in use, enhancing the practicality of the device.
Smart Images
Figure CN222229118U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of nut anti-theft, and more specifically relates to a nut assembly which is anti-loosening and anti-theft. Background Art
[0002] Conventional nuts do not have anti-theft functions, but in some special use occasions, such as power transmission towers, railway projects, communication systems, highways and other field facilities. In order to prevent damage by lawless elements, the fastening nuts are required to have anti-theft functions.
[0003] Anti-theft nuts are a type of nuts. Anti-theft nuts are mainly used to prevent loosening and theft at the fastening parts of mechanical components. However, the existing anti-theft nuts on the market have complex structures, high costs, and poor anti-theft performance. Most of the existing anti-theft and anti-loosening nuts can only be tightened or loosened, but cannot be made to be irreversible. Anti-theft nuts can only be tightened and cannot be retracted. Therefore, the two are combined to realize a nut assembly that prevents loosening and theft. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a nut assembly which is anti-loosening and anti-theft, which can simultaneously ensure that the nut is tightened and cannot be retracted, and the anti-theft part does not fall out when the nut is not in use.
[0005] The utility model discloses a nut assembly for preventing loosening and theft, comprising an anti-theft nut, a threaded sleeve and a screw rod; the anti-theft nut is sleeved on the threaded sleeve, and an anti-theft groove with a deeper depth than the threaded groove is provided on the inner thread of the anti-theft nut; an anti-theft piece is also placed in the anti-theft groove, and the placement depth of the anti-theft piece in the anti-theft groove increases along the tightening direction; the anti-theft piece is rollingly connected in the anti-theft groove; when the anti-theft piece abuts against the deepest end face of the anti-theft groove, the end face of the anti-theft piece is on the rotation interface of the outer peripheral surface of the threaded sleeve, and the anti-theft piece and the outer peripheral surface of the threaded sleeve are rollingly abutted; the threaded sleeve is sleeved on the screw rod, and the threaded sleeve is provided with inner and outer threads, and the outer thread of the threaded sleeve matches the inner thread of the anti-theft nut; the inner thread of the threaded sleeve matches the outer thread of the screw rod.
[0006] As a further improvement of the utility model, the anti-theft piece always abuts against the bottom of the anti-theft groove. In this way, when the thread sleeve is withdrawn and screwed out of the anti-theft nut, the anti-theft piece blocks the thread sleeve from exiting the anti-theft nut through the shallow end of the anti-theft groove.
[0007] As a further improvement of the utility model, a breaking groove is provided at the open end of the silk sleeve, so that the length of the silk sleeve can be effectively adjusted.
[0008] As a further improvement of the utility model, the anti-slipping piece is a hollow cylindrical sleeve, one end of the anti-slipping piece is a closed end, and the other end is an open end; the edge of the open end of the anti-slipping piece protrudes outward to form an abutment surface. This arrangement can facilitate the removal and insertion of the anti-slipping piece.
[0009] As a further improvement of the present invention, the cylindrical outer diameter of the anti-slipping piece matches the inner diameter of the anti-theft nut, so that the anti-slipping piece is embedded in the anti-theft nut; the abutting surface of the anti-slipping piece abuts against the end surface of the anti-theft nut. This arrangement can effectively help the anti-slipping piece abut against the anti-theft nut, so that the anti-slipping piece is more stably embedded in the anti-theft nut.
[0010] As a further improvement of the utility model, the starting end face of the anti-theft nut is evenly provided with a limiting groove around the center; the inner wall of the nut cap of the screw is evenly provided with a protrusion around the center; the limiting groove and the protrusion match each other. This arrangement can effectively improve the anti-loosening effect between the anti-theft nut and the screw.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] Compared with the anti-loosening and anti-theft nut in the prior art, the utility device can prevent loosening and theft by matching the thread sleeve and the anti-theft piece of the anti-theft nut. Moreover, the shape of the anti-theft piece in the anti-theft nut is not greatly restricted, so that the manufacturing cost of the utility device is reduced and the utility device is more convenient to use. Moreover, when not in use, an anti-dropping piece is provided to prevent the anti-theft piece from falling out of the anti-theft groove, so as to close the cavity formed by the anti-theft groove and prevent the anti-theft piece from falling out, making the utility device more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of the anti-theft nut assembly of the utility model;
[0014] Figure 2 This is a schematic diagram of the planar structure of the anti-theft nut assembly of the utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the anti-theft nut of the utility model;
[0016] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;
[0017] Figure 5 It is a structural schematic diagram of the silk sleeve of the utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the anti-dropping piece and the anti-theft nut of the utility model;
[0019] Figure 7This is a schematic diagram of the structure of the anti-dropping member of the utility model;
[0020] Figure 8 It is a schematic diagram of the top view of the structure of the specific embodiment 2 of the utility model;
[0021] Fig. 9 It is a bottom view structural schematic diagram of specific embodiment 2 of the utility model.
[0022] Description of the numbers in the figure:
[0023] The anti-theft nut 1, the anti-theft groove 11, the anti-theft piece 12, the limiting groove 13, the thread sleeve 2, the screw rod 3, the protrusion 31, and the anti-slip piece 4. DETAILED DESCRIPTION
[0024] Specific embodiment 1: Please refer to Figure 1-7 The invention discloses a nut assembly for preventing loosening and theft, comprising an anti-theft nut 1, a thread sleeve 2, a screw rod 3 and an anti-dropping part 4.
[0025] An anti-theft groove 11 with a deeper depth than the thread groove is provided on the internal thread at the end of the anti-theft nut 1, and the depth of the anti-theft groove 11 increases in the direction of the thread. An anti-theft piece 12 is also placed in the anti-theft groove 11, and the anti-theft piece 12 is preferably a sphere, and the anti-theft piece 12 always maintains a rotational connection in the anti-theft groove 11. The anti-theft piece 12 is rollingly connected in the anti-theft groove 11. The anti-theft piece 12 abuts against the anti-theft groove 1 through the screw 3. When the thread sleeve 2 is screwed into the anti-theft nut 1 in the direction of the thread, the anti-theft piece 12 rolls and displaces from the shallow end of the placement depth in the anti-theft groove 11 to the deep end of the placement depth; when the thread sleeve 2 is screwed out of the anti-theft nut 1 in the reverse direction of the thread, the anti-theft piece 12 rolls and displaces from the deep end of the placement depth in the anti-theft groove 11 to the shallow end of the placement depth, and prevents the thread sleeve 2 from being screwed out of the anti-theft nut 1.
[0026] The thread sleeve 2 is provided with internal and external threads, and the external threads of the thread sleeve 2 match the internal threads of the anti-theft nut 1, so that the anti-theft nut 1 can be sleeved on the thread sleeve 2. The open end of the thread sleeve 2 is provided with a break groove, which is used to facilitate self-adjustment of the length.
[0027] The threads of the screw rod 3 match the internal threads of the thread sleeve 2 so that the thread sleeve 2 is sleeved on the screw rod 3 .
[0028] The anti-slip member 4 is a hollow cylindrical sleeve, and one end is a closed end and the other end is an open end. The edge of the open end of the anti-slip member 4 protrudes outward to form an abutment surface. The cylindrical outer diameter of the anti-slip member 4 matches the inner diameter of the anti-theft nut 1. When the anti-theft nut 1 is not in use, the anti-slip member 4 is embedded in the anti-theft nut 1, and the abutment surface abuts against the outer edge of the anti-theft nut 1, so that the anti-theft member 12 does not fall off during the transportation of the anti-theft nut 1.
[0029] Working principle:
[0030] When the device is in use, the threaded sleeve is threadedly connected to the anti-theft nut, and the screw rod is threadedly connected to the threaded sleeve, and the threaded sleeve is used to improve the connection strength between the screw rod and the anti-theft nut. The screw rod is threadedly connected to the threaded sleeve, and the threaded sleeve is arranged on the screw rod. An anti-theft piece is arranged in the anti-theft groove of the anti-theft nut. When the threaded sleeve and the screw rod are screwed into the anti-theft nut, the threaded sleeve and the screw rod enter the anti-theft nut along the thread direction and are screwed into the end of the anti-theft nut and the screwing in is not affected. When the threaded sleeve and the screw rod are to be screwed out of the anti-theft nut, the anti-theft piece in the anti-theft nut is always rollingly connected to the anti-theft groove, so when the threaded sleeve and the screw rod rotate counterclockwise, the anti-theft piece is driven to rotate. The depth of the anti-theft piece anti-theft groove is limited, and the anti-theft piece is at the shallower end to block and clamp the threaded sleeve and the screw rod to achieve the anti-theft function.
[0031] Specific embodiment 2: Please refer to Figure 8-9 A nut assembly for preventing loosening and theft is disclosed, wherein the starting end face of the anti-theft nut 1 is evenly provided with a limiting groove 13 around the center. The inner wall of the nut cap of the screw rod 3 is evenly provided with a protrusion 31 around the center, and the limiting groove 13 and the protrusion 31 match each other. After the screw rod 3 is tightened through the thread sleeve 2, the inner wall of the nut cap abuts against the starting end of the anti-theft nut 1, and the protrusion 31 abuts against the limiting groove 13, so that the anti-loosening effect between the anti-theft nut 1 and the screw rod 3 is better.
[0032] Working principle:
[0033] In use, the threaded rod is sleeved with the threaded sleeve, and the anti-theft nut is sleeved with the threaded sleeve, so that the screw is tightened along the threaded direction of the threaded sleeve, and the starting end face of the anti-theft nut gradually approaches the inner wall of the nut cap of the screw. When the starting end face of the anti-theft nut completely abuts against the inner wall of the nut cap of the screw, the limiting groove on the starting end face of the anti-theft nut matches and abuts against the upper end protrusion of the inner wall of the nut cap, so that the anti-theft nut and the threaded sleeve screw have a better anti-loosening effect.
Claims
1. A nut assembly for preventing loosening and theft, characterized in that: It comprises an anti-theft nut (1), a threaded sleeve (2) and a screw rod (3); The anti-theft nut (1) is sleeved on the thread sleeve (2), and the internal thread of the anti-theft nut (1) is provided with an anti-theft groove (11) which is deeper than the thread groove; An anti-theft piece (12) is also placed in the anti-theft groove (11), and the placement depth of the anti-theft piece (12) in the anti-theft groove (11) increases along the tightening direction; the anti-theft piece (12) is rollingly connected to the anti-theft groove (11); when the anti-theft piece (12) abuts against the deepest end face of the anti-theft groove (11), the end face of the anti-theft piece (12) is located on the rotation interface of the outer peripheral surface of the thread sleeve (2), and the anti-theft piece (12) and the outer peripheral surface of the thread sleeve (2) are rollingly abutted; The thread sleeve (2) is sleeved on the screw rod (3), and the thread sleeve (2) is provided with internal and external threads. The external threads of the thread sleeve (2) match the internal threads of the anti-theft nut (1); the internal threads of the thread sleeve (2) match the external threads of the screw rod (3).
2. The anti-loosening and anti-theft nut assembly according to claim 1, characterized in that: The anti-theft piece (12) always abuts against the bottom of the anti-theft groove (11).
3. The anti-loosening and anti-theft nut assembly according to claim 1, characterized in that: The open end of the wire sleeve (2) is provided with a breaking groove.
4. The anti-loosening and anti-theft nut assembly according to claim 1, characterized in that: The anti-slipping piece (4) is a hollow cylindrical sleeve, one end of the anti-slipping piece (4) is a closed end, and the other end is an open end; the edge of the open end of the anti-slipping piece (4) protrudes outwards to form an abutment surface.
5. The anti-loosening and anti-theft nut assembly according to claim 4, characterized in that: The cylindrical outer diameter of the anti-slip component (4) matches the inner diameter of the anti-theft nut (1), so that the anti-slip component (4) is embedded in the anti-theft nut (1); the abutting surface of the anti-slip component (4) abuts against the end surface of the anti-theft nut (1).
6. The anti-loosening and anti-theft nut assembly according to claim 1, characterized in that: The starting end surface of the anti-theft nut (1) is provided with a limiting groove (13) evenly arranged around the center; the inner wall of the nut of the screw rod (3) is provided with a protrusion (31) evenly arranged around the center; the limiting groove (13) and the protrusion (31) match each other.