Anti-loosening and anti-dismounting nut with taper structure
By adopting a taper structure and elastic locking element design in the anti-loosening anti-removal nut, combined with the anti-theft groove and the anti-theft parts, the existing anti-theft nut has complex structure, high cost and poor anti-theft performance, and a tighter locking effect and effective anti-theft anti-theft anti-theft anti-theft function are achieved.
Patent Information
- Application Number
- CN202421571898.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing anti-theft nuts have complex structure, high cost and poor anti-theft performance, and cannot achieve the tightening and locking effect between nuts and screws.
The anti-loosening and anti-removal nut with a taper structure is adopted. By setting elastic locking elements on the nut and screw, and designing anti-theft grooves and anti-theft parts in the nut, combining the taper structure and elastic locking elements, a tighter locking effect is achieved.
It achieves better locking effect and anti-theft and anti-removal function. Compared with the existing technology, it improves the anti-loosening effect and has anti-theft function.
Smart Images
Figure CN222668645U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of nut anti-theft, and more specifically relates to an anti-loosening and anti-disassembly nut with a taper structure. 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 achieve the anti-theft nut cannot be retracted. Anti-theft nuts can only be tightened and cannot be retracted, and the tightening effect of existing anti-theft nuts is not good. Moreover, most of the existing anti-theft nuts only open anti-theft grooves in the nut grooves and place anti-theft parts to achieve the anti-theft effect, but the locking effect is poor and the best locking effect cannot be achieved. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an anti-loosening and anti-disassembly nut with a tapered structure, which can achieve tighter locking of the nut and the screw through an elastic locking element and has a good locking effect.
[0005] The utility model discloses an anti-loosening and anti-disassembly nut with a tapered structure, comprising a screw, a nut and an elastic locking element; the screw comprises a rod body, and a thread is arranged on the rod body of the screw; a through hole is opened in the middle of the elastic locking element, and a thread matching with the screw rod body is opened on the hole wall of the through hole of the elastic locking element; a threaded connecting sleeve of the elastic locking element is arranged outside the rod body of the screw; the outer periphery of the elastic locking element is a tapered surface, and the thread is opened on the tapered surface; a tapered hole is formed inside the nut; the hole wall of the tapered hole is a tapered surface matching with the outer periphery of the elastic locking element, and a thread matching with the outer periphery of the elastic locking element is opened.
[0006] As a further improvement of the utility model, a threaded surface is provided on the surface of the tapered hole, and an anti-theft groove which is deeper than the thread is also provided in the threaded surface of the tapered hole; an anti-theft piece is also placed in the anti-theft groove, and the anti-theft piece is placed in the anti-theft groove, and the placement depth of the anti-theft piece 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 elastic locking element, and the anti-theft piece rolls and abuts against the outer peripheral surface of the elastic locking element.
[0007] As a further improvement of the present invention, the anti-theft piece always abuts against the bottom of the anti-theft groove.
[0008] As a further improvement of the utility model, a breaking groove is provided at the upper end of the elastic locking element.
[0009] As a further improvement of the utility model, the anti-slip member is in the shape of a hollow sleeve, one end of the anti-slip member is a closed end, and the other end is an open end; the edge of the open end of the anti-slip member protrudes outward to form an abutment surface; and the outer periphery of the closed end of the anti-slip member is formed with a taper.
[0010] As a further improvement of the present invention, the taper formed on the outer periphery of the closed end of the anti-slipping piece is equal to the taper of the tapered hole of the nut, so that the anti-slipping piece is embedded in the nut; the abutting surface of the anti-slipping piece abuts against the outer edge of the upper end of the nut.
[0011] As a further improvement of the utility model, the screw shaft is a tapered portion near the head, and the surface of the tapered portion is provided with the same thread as the screw shaft; the diameter of the tapered portion increases linearly from the tail of the screw to the head.
[0012] As a further improvement of the utility model, the hole wall of the through hole of the elastic locking element is a conical surface matching the tapered portion, and is provided with a thread matching the outer periphery of the tapered portion.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] Compared with the prior art, the device of the utility model realizes the anti-theft and anti-disassembly functions and strengthens the locking effect. Compared with the prior art, which only adds anti-loosening thread sleeves or anti-theft grooves and anti-theft parts for anti-theft, the device of the utility model improves the anti-loosening effect by adding elastic locking elements and making the nuts and screws have a certain taper, and at the same time has anti-theft grooves and anti-theft parts to achieve the anti-theft and anti-disassembly effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a three-dimensional structural schematic diagram of the nut of the utility model;
[0017] Figure 3 It is a side view structural schematic diagram of the nut of the utility model;
[0018] Figure 4 For this utility model Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;
[0019] Figure 5 It is a structural schematic diagram of the elastic locking element of the utility model;
[0020] Figure 6 It is a side view structural schematic diagram of the elastic locking element of the utility model;
[0021] Figure 7 For this utility model Figure 7 Schematic diagram of the cross-sectional structure at AA in the middle;
[0022] Figure 8 This is a schematic diagram of the structure of the anti-dropping member and the nut combined in the utility model;
[0023] Fig. 9 This is a schematic diagram of the three-dimensional structure of the screw in the second embodiment of the utility model;
[0024] Fig.10 This is a schematic structural diagram of an elastic locking element according to a second embodiment of the present utility model;
[0025] Fig.11 This is a side structural schematic diagram of the elastic locking element of the second embodiment of the utility model;
[0026] Fig.12 For this utility model Fig.11 Schematic diagram of the cross-sectional structure at AA in the middle.
[0027] Description of the numbers in the figure:
[0028] The screw 1 , the tapered portion 11 , the nut 2 , the tapered hole 21 , the anti-theft groove 22 , the anti-theft piece 221 , the elastic locking element 3 , the breaking groove 31 , and the anti-slip piece 4 . DETAILED DESCRIPTION
[0029] Specific embodiment 1: Please refer to Figure 1-8 The invention discloses a nut with a tapered structure for preventing loosening and disassembly, comprising a screw 1, a nut 2 and an elastic locking element 3. The nut 2 is sleeved on the screw 1, and an elastic locking element 3 is also clamped between the nut 2 and the screw 1.
[0030] The screw 1 comprises a rod body and a rod cap, and a thread is formed on the rod body of the screw 1. The rod cap end of the screw 1 is hexagonal.
[0031] A tapered hole 21 is provided in the middle of the nut 2, and a thread is provided on the hole wall of the tapered hole 21. An anti-theft groove 22 which is deeper than the thread is also provided on the hole wall of the tapered hole 21. The depth of the anti-theft groove 22 increases along the thread direction. An anti-theft piece 221 is also placed in the anti-theft groove 22. The anti-theft piece 221 is preferably a sphere, and the anti-theft piece 221 always keeps a rotation connection in the anti-theft groove 22. The anti-theft piece 221 is rollingly connected in the anti-theft groove 22. The anti-theft piece 221 abuts against the anti-theft groove 1 through the screw 1. When the elastic locking element 3 is screwed into the nut 1 along the thread direction, the anti-theft piece 221 rolls and displaces from the shallow end of the placement depth in the anti-theft groove 22 to the deep end of the placement depth; when the elastic locking element 3 is screwed out of the nut 1 in the reverse direction of the thread, the anti-theft piece 221 rolls and displaces from the deep end of the placement depth in the anti-theft groove 22 to the shallow end of the placement depth, and prevents the elastic locking element 3 from being screwed out of the nut 1.
[0032] The elastic locking element 3 is provided with a through hole in the middle, and the hole wall of the elastic locking element 3 is provided with a thread matching the shaft of the screw 1. The elastic locking element 3 is threadedly connected and sleeved outside the shaft of the screw 1. The outer periphery of the elastic locking element 3 is a conical surface, and the conical surface is provided with a thread. The conical surface formed by the hole wall of the tapered hole 21 of the nut 2 matches the conical surface of the outer periphery of the elastic locking element 3, and is provided with a thread matching the hole wall of the tapered hole 21. The upper end of the elastic locking element 3 is provided with a break groove, and the break groove is used to facilitate self-adjustment of the length.
[0033] The anti-slip member 4 is in the shape of a hollow sleeve, with one end being a closed end and the other end being an open end. The edge of the open end of the anti-slip member 4 protrudes outward to form an abutment surface. The outer periphery of the closed end of the anti-slip member 4 is formed with a taper, and the taper formed on the outer periphery of the closed end of the anti-slip member 4 is equal to the taper of the tapered hole 21 of the nut 2. When the anti-theft nut 1 is not used, the anti-slip member 4 is embedded in the nut 2, and the abutment surface abuts against the outer edge of the upper end of the nut 2, so that the anti-theft member 221 does not fall off during the transportation of the nut 2.
[0034] Working principle:
[0035] When the device is in use, the elastic locking element is threadedly connected to the anti-theft nut, and the screw is threadedly connected to the elastic locking element. The elastic locking element is used to improve the connection strength between the screw and the anti-theft nut. The screw is threadedly connected to the elastic locking element, and the elastic locking element is sleeved on the screw. An anti-theft piece is provided in the anti-theft groove of the anti-theft nut. When the elastic locking element and the screw are screwed into the anti-theft nut, the elastic locking element and the screw 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 elastic locking element and the screw 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 the elastic locking element and the screw rotate counterclockwise to drive the anti-theft piece to rotate. The depth of the anti-theft groove of the anti-theft piece is limited, and the anti-theft piece is at the shallower end to block and clamp the elastic locking element and the screw to achieve the anti-theft function.
[0036] Specific embodiment 2: Please refer to Figure 9-12 The invention discloses a nut with a tapered structure for preventing loosening and disassembly. The difference from the first embodiment is that the screw 1 further comprises a tapered portion 11, which is located at the end of the rod cap of the screw 1. The tapered portion 11 is integrally formed with the screw 1. Threads are provided on the rod and the tapered portion 11. The diameter of the tapered portion 11 increases linearly from the tail to the head of the screw 1.
[0037] The inner wall and the outer wall of the elastic locking element 3 are both provided with threads, and the outer thread of the elastic locking element 3 is threadedly connected with the nut 2, so that the nut 1 can be sleeved on the elastic locking element 3. The inner thread of the elastic locking element 3 is threadedly connected with the screw 1, so that the nut 1 can be sleeved on the elastic locking element 3. The hole wall of the through hole of the elastic locking element 3 is a conical surface matching the tapered portion 11, and is provided with threads matching the outer periphery of the tapered portion 11, so that the inner thread of the elastic locking element 3 is threadedly connected with the screw 1.
[0038] Working principle:
[0039] In this embodiment, the screw shaft has a tapered portion near the head end, and the hole wall of the through hole of the elastic locking element is provided with a tapered surface, so that the hole wall of the through hole of the elastic locking element and the tapered portion of the screw match each other, and the locking degree is further improved to maintain the stability of the overall structure.
Claims
1. An anti-loosening and anti-disassembly nut with a tapered structure, characterized in that: It comprises a screw (1), a nut (2) and an elastic locking element (3); The screw (1) comprises a shaft, and the shaft of the screw (1) is provided with a thread; A through hole is provided in the middle of the elastic locking element (3), and a thread matching the shaft of the screw (1) is provided on the wall of the through hole of the elastic locking element (3); the threaded connection sleeve of the elastic locking element (3) is arranged outside the shaft of the screw (1); the outer periphery of the elastic locking element (3) is a conical surface, and a thread is provided on the conical surface; The nut (2) has a tapered hole (21) in its interior. The wall of the tapered hole (21) is a tapered surface that matches the outer periphery of the elastic locking element (3), and is provided with a thread that matches the outer periphery of the elastic locking element (3).
2. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 1, characterized in that: The surface of the tapered hole (21) is provided with a threaded surface, and the threaded surface of the tapered hole (21) is also provided with an anti-theft groove (22) which is deeper than the threaded surface; an anti-theft piece (221) is also placed in the anti-theft groove (22), and the anti-theft piece (221) is placed in the anti-theft groove (22), and the placement depth of the anti-theft piece (221) increases along the tightening direction; the anti-theft piece (221) is rollingly connected in the anti-theft groove (22); when the anti-theft piece (221) abuts against the deepest end face of the anti-theft groove (22), the end face of the anti-theft piece (221) is located on the rotation interface of the outer peripheral surface of the elastic locking element (3), and the anti-theft piece (221) is in rolling abutment with the outer peripheral surface of the elastic locking element (3).
3. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 2, characterized in that: The anti-theft piece (221) always abuts against the bottom of the anti-theft groove (22).
4. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 1, characterized in that: The upper end of the elastic locking element (3) is provided with a breaking groove.
5. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 1, characterized in that: The anti-slip member (4) is also provided in the form of a hollow sleeve, one end of the anti-slip member (4) 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 outwards to form an abutment surface; and the outer periphery of the closed end of the anti-slip member (4) is formed with a taper.
6. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 5, characterized in that: The taper formed on the outer periphery of the closed end of the anti-slipping piece (4) is equal to the taper of the tapered hole (21) of the nut (2), so that the anti-slipping piece (4) is embedded in the nut (2); the abutting surface of the anti-slipping piece (4) abuts against the outer edge of the upper end of the nut (2).
7. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 1, characterized in that: The shaft of the screw (1) is provided with a tapered portion (11) near the head, and a surface of the tapered portion (11) is provided with a thread identical to that of the shaft of the screw (1); the diameter of the tapered portion (11) increases linearly in the direction from the tail of the screw (1) to the head.
8. The anti-loosening and anti-disassembly nut with a tapered structure according to claim 7, characterized in that: The hole wall of the through hole of the elastic locking element (3) is a conical surface matching the tapered portion (11), and is provided with a thread matching the outer periphery of the tapered portion (11).