Anti-theft nut

Abstract

The utility model discloses an anti-theft nut which is used for being screwed on a bolt in a threaded mode and comprises a nut assembly and a key, and the nut assembly comprises an inner core assembly and a decoration ring. A threaded hole is formed in the center of the inner core assembly, and the inner core assembly is used for being screwed to the bolt through the threaded hole; the decoration ring is rotationally connected to the periphery of the inner core assembly in a sleeving mode, when the decoration ring rotates, the axis wound by the decoration ring is consistent with the axis of the threaded hole, and the inner core assembly is integrally limited in the decoration ring; the key can be detachably inserted into the decoration ring from one axial end of the decoration ring, after the key is inserted, the key is in circumferential clamping connection with the inner core assembly, part of the key is exposed out of the decoration ring to form an operation part, and the inner core assembly can be driven to rotate around the bolt by rotating the operation part so that the inner core assembly can be screwed into or screwed out of the bolt. According to the utility model, the nut assembly can be taken down from the bolt only through a specific key tool.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-theft devices, in particular to an anti-theft nut. Background Art

[0002] In the field of outdoor equipment technology, especially rooftop tents, if traditional bolts and nuts are used to fix the tent to the roof, since most nuts are standard parts, they can be unscrewed from the bolts using tools such as wrenches that match the nuts, or by directly twisting the nuts by hand, thereby releasing the lock on the tent that was originally locked to the roof by bolts and nuts. Therefore, anyone can easily unscrew the nuts and then remove the tent from the roof, making it difficult to ensure anti-theft performance. In addition, the space between the tent and the roof is very limited. Therefore, if an anti-theft nut that requires a small installation space, can only be removed with specific tools, and is easy to operate can be designed, the anti-theft performance of the tent that is locked to the roof by bolts and nuts will be effectively improved. Utility Model Content

[0003] The utility model aims to provide an anti-theft nut, and solves the technical problem of how to improve the anti-theft performance of a roof tent that is locked on a vehicle roof by bolts and nuts.

[0004] To achieve the above-mentioned purpose, the solution of the present utility model is: an anti-theft nut for being threadedly screwed on a bolt, comprising a nut assembly and a key, wherein the nut assembly comprises an inner core assembly and a decorative ring;

[0005] The inner core component has a threaded hole in the center, and the inner core component is used to be screwed onto the bolt through the threaded hole;

[0006] The decorative ring is rotatably sleeved on the outer periphery of the inner core component, and when rotating, the axis around which it rotates is consistent with the axis of the threaded hole;

[0007] The key can be removably inserted into the decorative ring from one axial end of the decorative ring. After insertion, it is circumferentially engaged with the inner core assembly, and a portion is exposed from the decorative ring to form an operating part. By rotating the operating part, the inner core assembly can be driven to rotate around the bolt, so that the nut assembly can be screwed in or out of the bolt.

[0008] Furthermore, the threaded hole is a through hole, and a bolt through hole is formed on the key. When the key is inserted into the decorative ring, the whole covers one axial end of the decorative ring, and the bolt through hole is aligned with the threaded hole for the bolt to pass through.

[0009] Furthermore, the key is formed with a plurality of protrusions on the side facing the decorative ring, and the plurality of protrusions are arranged around the bolt perforation array, and a socket is formed on the inner core component corresponding to each protrusion. When the key is covered on one end of the decorative ring, the protrusion extends into the decorative ring and is inserted into the socket, so that the key and the inner core component are circumferentially engaged.

[0010] Furthermore, a guiding slope is formed on the edge of the socket on one side for the protrusion to be inserted into.

[0011] Furthermore, the operating portion includes a portion of the key side wall that is exposed from the decorative ring and can be grasped by a hand when the key is covered on one end of the decorative ring, and / or includes a wrench fitting portion that is protruding and fixed on the end of the key facing away from the decorative ring and is used for a wrench to twist.

[0012] Furthermore, friction lines are formed on the side wall surface of the key.

[0013] Furthermore, a first magnetic part is provided on the inner core component, and a second magnetic part is provided on the key. When the key is inserted into the decorative ring from one axial end of the decorative ring, the first magnetic part and the second magnetic part are magnetically attracted to keep the key inserted in the decorative ring.

[0014] Furthermore, the inner core assembly includes an upper cover, a nut and a lower cover. The upper cover and the lower cover are buckled and fixed to each other, and the nut is accommodated and fixed between the upper cover and the lower cover. After the upper cover and the lower cover are buckled and fixed, a groove is formed on the outer ring between the two. The inner wall of the decorative ring cooperates with the outer rings of the two and is rotated on the outer rings of the two. A convex rib is formed on the inner side of the decorative ring, and the convex rib extends into and is limited in the groove, so that the decorative ring can be rotatably sleeved on the outer periphery of the inner core assembly, and the inner core assembly is axially clamped and limited in the decorative ring.

[0015] Furthermore, the inner core assembly is entirely confined within the decorative ring.

[0016] Furthermore, the inner core component is provided with a convex point at the portion where the inner core component is sleeved by the decorative ring, and the convex point abuts against the decorative ring, so that an interference fit is formed between the inner core component and the decorative ring, thereby providing resistance to rotation between the inner core component and the decorative ring;

[0017] Alternatively, the decorative ring is provided with a convex point at the position where it is sleeved on the inner core component, and the convex point abuts against the inner core component to form an interference fit between the inner core component and the decorative ring, thereby creating resistance to rotation between the inner core component and the decorative ring.

[0018] After adopting the above solution, the beneficial effects of the utility model are:

[0019] (1) The inner core component has a threaded hole in the center, and the inner core component is used to be screwed onto the bolt through the threaded hole. The decorative ring is rotatably sleeved on the outer periphery of the inner core component, and when rotating, the axis around which it rotates is consistent with the axis of the threaded hole. Therefore, when the inner core component is installed on the bolt, since it is located inside the decorative ring, and the decorative ring forms a rotational fit with the inner core component, only the decorative ring can be rotated from the outside. Since the inner core component has a large resistance when tightened on the bolt, the rotation of the decorative ring will not drive the rotation of the inner core component. Therefore, the inner core component cannot be unscrewed from the bolt;

[0020] (2) The key can be inserted into the decorative ring from one axial end of the decorative ring in a detachable manner. After insertion, it is circumferentially engaged with the inner core component and partially exposed from the decorative ring to form an operating portion. By rotating the operating portion, the inner core component can be driven to rotate around the bolt, so that the inner core component is screwed in or out of the bolt. Therefore, only by using a special key that can be inserted into the decorative ring and circumferentially engaged with the inner core component can the anti-theft nut be easily unscrewed from the bolt, thereby improving the anti-theft performance of the equipment locked by bolts and nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded structural diagram of the utility model;

[0022] Figure 2 This is an exploded structural diagram from another perspective of the present invention;

[0023] Figure 3 It is a three-dimensional structural diagram of the nut assembly;

[0024] Figure 4 is a partial cross-sectional view of a nut assembly;

[0025] Figure 5 A perspective view of the key and nut assembly separated;

[0026] Figure 6 This is a partial cross-sectional view of the key when it is inserted into the decorative ring and axially engaged with the inner core assembly;

[0027] Figure 7 A schematic diagram of installing a rooftop tent on a vehicle roof using a first-shaped bow frame;

[0028] Figure 8 A schematic diagram of installing a rooftop tent on a vehicle roof using a second-shaped bow frame;

[0029] Figure 9 A schematic diagram of installing a rooftop tent on a vehicle roof using a third-shaped bow frame;

[0030] Figure 10 This is a schematic diagram of installing a roof tent on a vehicle roof using a fourth shape of bow frame.

[0031] Explanation of the numbers: 1-bolt, 2-inner core assembly, 3-decorative ring, 4-key, 5-threaded hole, 6-operating part, 7-bolt through hole, 8-protrusion, 9-socket, 10-guide slope, 11-key side wall, 12-nut assembly, 13-wrench fitting part, 14-first magnetic part, 15-second magnetic part, 16-upper cover, 17-nut, 18-lower cover, 19-slot, 20-rib, 21-base, 22-locking screw, 23-crossbeam, 24-bump, 25-bow frame, 26-flat washer, 27-elastic washer, 28-wrench. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words, such as the use of terms such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0034] The utility model provides an anti-theft nut, such as Figure 1-10As shown, it is used for threaded connection on the bolt 1, including a nut assembly 12 and a key 4, and the nut assembly 12 includes an inner core assembly 2 and a decorative ring 3; the inner core assembly 2 has a threaded hole 5 in the center, and the inner core assembly 2 is used to be threaded and connected to the bolt 1 through the threaded hole 5. The specific structure is given later; the decorative ring 3 is rotatably sleeved on the outer periphery of the inner core assembly 2, and when rotating, the axis around which it rotates is consistent with the axis of the threaded hole 5, and the inner core assembly 2 is entirely confined in the decorative ring 3, that is, the side wall is covered by the decorative ring 3; the key 4 can be detachably inserted into the decorative ring 3 from one axial end of the decorative ring 3 (specifically, during use, the end facing the direction of unscrewing the bolt), and after insertion, it is circumferentially clamped with the inner core assembly 2. The structure of the circumferential clamping is not specifically limited, and a specific embodiment is given later. The rotation of the axis of the perforation 5 can drive the inner core component 2 to rotate around the bolt 1. After insertion, the inner core component 2 is partially exposed from the decorative ring 3 to form the operating portion 6. By rotating the operating portion 6 with the help of a tool or directly by hand, the inner core component 2 can be driven to rotate around the bolt 1, so that the nut component 12 is screwed in or out of the bolt 1. When the key 4 is removed, the inner core component 2 cannot be directly twisted on the outer periphery of the inner core component 2 because the side wall of the inner core component 2 is covered by the decorative ring 3. Since the inner core component 2 has a large resistance when tightened on the bolt 1, the inner core component 2 cannot be driven to rotate together when twisting the decorative ring 3. Only by inserting a specially designed key 4 that matches the inner core component 2 can the inner core component 2 be twisted, thereby improving the anti-theft performance of the device fixed by the bolt 1 and the anti-theft nut.

[0035] Key References Figure 7-10 As shown, the installation process is as follows: first, place the base frame 21 of the roof tent on the crossbeam 23 above the roof, and then use a bow frame 25. The shape of the bow frame 25 is not specifically limited ( Figure 7-10 Four bow frames 25 of different shapes are given in the specification, so that the middle part of the bow frame 25 spans under the cross beam 23, and the two ends extend to the bottom of the base frame 21. A downward extending bolt 1 is fixedly provided on the bottom side of the base frame 21, and mounting holes for the bolts 1 to pass through are provided at both ends of the bow frame 25. Each mounting hole is for a bolt 1 to pass through, and then a nut assembly 12 is tightened at the bottom end of each bolt 1 by the key 4. The nut assembly 12 presses the bow frame 25 upward to clamp the cross beam 23 between the base frame 21 and the bow frame 25. The roof tent is fixed above the roof through multiple bow frame 25 structures with the above-mentioned installation method. Preferably, a flat washer 26 and an elastic washer 27 can also be set on the bolt 1, so that the flat washer 26 and the elastic washer 27 are clamped between the nut assembly 12 and the bow frame 25.

[0036] In a more preferred embodiment, the inner core component 2 is provided with a convex point 24 at the position where the decorative ring 3 is sleeved, and the convex point 24 abuts on the decorative ring 3 to form an interference fit between the inner core component 2 and the decorative ring 3. Of course, a convex point 24 can also be provided at the position where the decorative ring 3 is sleeved on the inner core component 2, and the convex point 24 abuts on the inner core component 2 to form an interference fit between the inner core component 2 and the decorative ring 3, as long as there is resistance to rotation between the inner core component 2 and the decorative ring 3; and then during the installation process, you can first use your hands to straighten it The decorative ring 3 connected to the twist nut assembly 12 has a certain resistance to rotation between the decorative ring 3 and the inner core assembly 2. At this time, the inner core assembly 2 will rotate with the decorative ring 3 until the inner core assembly 2 is tightly pressed against the bow frame 25, resulting in the torque driving the inner core assembly 2 to rotate greater than the resistance to relative rotation between the decorative ring 3 and the inner core assembly 2. At this time, the inner core assembly 2 cannot be rotated by the decorative ring 3, so the key 4 is used to directly twist the inner core assembly 2 to continue tightening. This setting can make the operation more convenient during the installation process.

[0037] Preferably, the threaded hole 5 is a through hole. In order to facilitate the fitting and positioning of the key 1 during the insertion of the decorative ring 3, as well as the avoidance bolt 1, a bolt through hole 7 is preferably formed on the key 4. When the key 4 is inserted into the decorative ring 3, the whole covers one axial end of the decorative ring 3. The bolt through hole 7 is aligned with the threaded hole 5 for the bolt 1 to pass through. More specifically, the key 4 is disc-shaped, and the bolt through hole 7 is arranged through the center of the disc-shaped key 4.

[0038] Preferably, in this embodiment, the key 4 and the decorative ring 3 are circumferentially engaged by the following structure: the key 4 is formed with a plurality of protrusions 8 on the side facing the decorative ring 3. Specifically, three protrusions 8 are provided in this embodiment. Each protrusion 8 is arranged in an array around the bolt through-hole 7. A socket 9 is formed on the inner core assembly 2 corresponding to each protrusion 8. When the key 4 is placed on one end of the decorative ring 3, each protrusion 8 extends into the decorative ring 3 and inserts into the corresponding socket 9, thereby circumferentially engaging the key 4 and the inner core assembly 2. To facilitate alignment of the protrusion 8 with the socket 9, the socket 9 is preferably formed with a guide slope 10 on the edge of the side for the protrusion 8 to be inserted.

[0039] In order to facilitate the alignment and positioning of the protrusion 8 on the key 4 with the socket 9 on the inner core component 2, and to prevent the key 4 from falling out during the process of inserting the key 4 into the decorative ring 3 and circumferentially engaging with the inner core component 2, preferably, a first magnetic part 14 is provided on the inner core component 2, and a second magnetic part 15 is provided on the key 4. More specifically, three first magnetic parts 14 and second magnetic parts 15 are provided respectively, and the three first magnetic parts 14 are arranged around the threaded hole 5, and the three second magnetic parts 15 correspond to the positions of the three first magnetic parts 14. When the key 4 is inserted into the decorative ring 3 from one axial end of the decorative ring 3, each first magnetic part 14 is magnetically attracted to each second magnetic part 15, so that the key 4 remains inserted into the decorative ring 3. Therefore, in the process of twisting the inner core component 2 by the key 4, even if the key 4 is inserted into the decorative ring 3 from the bottom of the inner core component 2, the key 4 will not be separated from the inner core component 2 due to the action of gravity, making the process of rotating the inner core component 2 by the key 4 more convenient.

[0040] Preferably, in this embodiment, the operating portion 6 includes a portion of the key side wall 11 that is exposed from the decorative ring 3 and can be grasped by a human hand when the key 4 is covered on one end of the decorative ring 3. More preferably, friction patterns are formed on the surface of the key side wall 11 to provide greater friction when grasped by a human hand. The operating portion 6 also includes a wrench fitting portion 13 that is convexly fixed to the end of the key 4 away from the decorative ring 3 and is used for being twisted by a wrench 28. The wrench fitting portion 13 is formed in a shape consistent with the outer contour of a standard nut so that it can be twisted by an existing standard wrench 28 (emphasis combined with Figure 10 As shown), thereby providing two ways to rotate the key 4; of course, only one structure of the key side wall 11 or the wrench fitting portion 13 that can be grasped by a hand can be provided as the operating portion 6, and the present invention is not limited thereto.

[0041] In order to make the inner core component easier to produce and manufacture, the inner core component 2 includes an upper cover 16, a nut 17 and a lower cover 18. The upper cover 16 and the lower cover 18 are fastened together and fixed, and are locked by a locking screw 22. After the upper cover 16 and the lower cover 18 are fastened together, they can cooperate with the inner ring of the decorative ring 3, so that the decorative ring 3 can rotate around the outer periphery of the two, so that the decorative ring 3 can be rotatably sleeved on the outer periphery of the inner core component 2. The nut 17 is accommodated and fixed between the upper cover 16 and the lower cover 18. After the upper cover 16 and the lower cover 18 are fastened together, a card groove 19 is formed in the outer ring clamp between the two, and a rib 20 is formed on the inner side of the decorative ring 3. The rib 20 extends into and is confined in the card groove 19, so as to realize the aforementioned axial card connection and limit position of the inner core component 2 in the decorative ring 3.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. An anti-theft nut, used for threading onto a bolt, characterized by: It includes a nut assembly and a key, and the nut assembly includes an inner core assembly and a decorative ring; The inner core component has a threaded hole in the center, and the inner core component is used to be screwed onto the bolt through the threaded hole; The decorative ring is rotatably sleeved on the outer periphery of the inner core component, and when rotating, the axis around which it rotates is consistent with the axis of the threaded hole; The key can be removably inserted into the decorative ring from one axial end of the decorative ring. After insertion, it is circumferentially engaged with the inner core assembly, and a portion is exposed from the decorative ring to form an operating part. By rotating the operating part, the inner core assembly can be driven to rotate around the bolt, so that the nut assembly can be screwed in or out of the bolt.

2. The anti-theft nut according to claim 1, characterized in that: The threaded hole is a through hole, and a bolt through hole is formed on the key. When the key is inserted into the decorative ring, the whole key covers one axial end of the decorative ring, and the bolt through hole is aligned with the threaded hole for the bolt to pass through.

3. The anti-theft nut according to claim 2, characterized in that: The key is formed with a plurality of protrusions on the side facing the decorative ring, and the plurality of protrusions are arranged around the bolt through-hole array. A socket is formed on the inner core component corresponding to each protrusion. When the key is covered on one end of the decorative ring, the protrusion extends into the decorative ring and is inserted into the socket, so that the key and the inner core component are circumferentially engaged.

4. The anti-theft nut according to claim 3, characterized in that: The edge of the socket for inserting the protrusion is formed with a guiding slope.

5. The anti-theft nut according to claim 2, characterized in that: The operating portion includes a portion of the key side wall that is exposed from the decorative ring and can be grasped by a person when the key is covered on one end of the decorative ring, and / or includes a wrench fitting portion that is convexly fixed on the end of the key away from the decorative ring and is used for being twisted by a wrench.

6. The anti-theft nut according to claim 5, characterized in that: Friction lines are formed on the surface of the key side wall.

7. The anti-theft nut according to claim 1, characterized in that: The inner core assembly is provided with a first magnetic part, and the key is provided with a second magnetic part. When the key is inserted into the decorative ring from one axial end of the decorative ring, the first magnetic part and the second magnetic part are magnetically attracted to keep the key inserted into the decorative ring.

8. The anti-theft nut according to claim 1, characterized in that: The inner core component includes an upper cover, a nut and a lower cover. The upper cover and the lower cover are buckled and fixed to each other. The nut is accommodated and fixed between the upper cover and the lower cover. After the upper cover and the lower cover are buckled and fixed, a groove is formed on the outer ring between the two. The inner wall of the decorative ring cooperates with the outer rings of the two and is rotatably sleeved on the outer rings of the two. A convex rib is formed on the inner side of the decorative ring, and the convex rib extends into and is confined in the groove, so that the decorative ring can be rotatably sleeved on the outer periphery of the inner core component, and the inner core component is axially clamped and limited in the decorative ring.

9. The anti-theft nut according to claim 1, characterized in that: The inner core component is entirely confined within the decorative ring.

10. The anti-theft nut according to claim 1, characterized in that: The inner core component is provided with a convex point at the portion where it is sleeved by the decorative ring, and the convex point abuts against the decorative ring, so that an interference fit is formed between the inner core component and the decorative ring, thereby creating resistance to rotation between the inner core component and the decorative ring; Alternatively, the decorative ring is provided with a convex point at the position where it is sleeved on the inner core component, and the convex point abuts against the inner core component to form an interference fit between the inner core component and the decorative ring, thereby creating resistance to rotation between the inner core component and the decorative ring.

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