CN215257281U

CN215257281U - Anti-theft self-locking bolt

Info

Publication number: CN215257281U
Application number: CN202120157171.0U
Authority: CN
Inventors: 陈震; 曹芳群
Original assignee: Zhejiang Hongyang Automobile Components Co ltd
Current assignee: Zhejiang Hongyang Automobile Components Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-12-21
Anticipated expiration: 2031-01-20

Abstract

The utility model discloses an anti-theft self-locking bolt, which comprises a screw head, a screw rod, a hexagonal counter bore, a cover plate, a mounting hole, a mounting rod, a spring, a limiting rod, a cross rod, a mounting cavity, a bayonet, a shaft hole, a rotating shaft, a circular plate, a tooth point, a screw hole, a screw and a gear, wherein the screw rod is fixedly arranged at the bottom of the screw head, the hexagonal counter bore is arranged at the central position of the upper part of the screw head, the cover plate is arranged at the upper part of the screw head, the mounting hole which is vertically arranged is arranged at the side part of the hexagonal counter bore at the upper part of the screw head, the mounting rod is inserted in the mounting hole, the mounting rod is in axial sliding fit with the mounting hole, the spring is arranged between the lower end of the mounting rod and the hole bottom of the mounting hole, one end of the spring is rotationally connected with the lower end of the mounting rod, compared with the prior art, the bolt can be effectively prevented from loosening, the bolt is effectively prevented from being randomly disassembled by other people, and the use safety and the reliability of the bolt are improved, simple structure, convenient use and convenient popularization and application.

Description

Anti-theft self-locking bolt

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of fastener, especially a theftproof self-locking bolt.

[ background of the invention ]

Bolts are mechanical parts, cylindrical threaded fasteners fitted with nuts. The fastener consists of a head and a cylinder with a screw rod provided with external threads, and is matched with a nut and used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. The bolt with the structure has the following defects in the actual use process: when the bolt in the prior art is used in a vibrating device, the bolt is easy to loosen and fall off, so that the working reliability and safety of the device are affected, in addition, the existing bolt has no anti-theft function, and the existing bolt can be easily detached from an object by using a wrench or a screwdriver, so that an object fixed by the bolt is stolen by other useful people, such as a vehicle license plate, and therefore, the bolt with the anti-theft self-locking function is needed to be provided.

[ Utility model ] content

The utility model aims at solving the problem in the prior art and providing an anti-theft self-locking bolt.

In order to achieve the purpose, the utility model provides an anti-theft self-locking bolt, which comprises a screw head, a screw rod, a hexagonal counter bore, a cover plate, a mounting hole, a mounting rod, a spring, a limiting rod, a cross rod, a mounting cavity, a bayonet, a shaft hole, a rotating shaft, a circular plate, a tooth point, a screw hole, a screw and a gear, wherein the screw rod is fixedly arranged at the bottom of the screw head, the hexagonal counter bore is arranged at the central position of the upper part of the screw head, the cover plate is arranged at the upper part of the screw head, the mounting hole which is vertically arranged is arranged at the side part of the hexagonal counter bore at the upper part of the screw head, the mounting rod is inserted in the mounting hole and is in axial sliding fit with the mounting hole, the spring is arranged between the lower end of the mounting rod and the hole bottom of the mounting hole, one end of the spring is rotatably connected with the lower end of the mounting rod, the other end is fixedly connected with the hole bottom of the mounting hole, a plurality of through holes are arranged at the edge of the upper part of the cover plate, the mounting rod penetrates through one of the through holes, the mounting rod is fixedly connected with the through holes, limiting rods are inserted into the other through holes, the limiting rods are in running fit with the through holes, the lower end of each limiting rod is provided with a horizontally arranged cross rod, a plurality of mounting cavities corresponding to the positions of the limiting rods are arranged on the periphery of the hexagonal counter bores in the screw head, bayonets communicated with the mounting cavities are arranged on the upper surface of the screw head right above each mounting cavity, the lower end of each limiting rod penetrates through the bayonets, the upper surface of each cross rod is just contacted with the top of the inside of the mounting cavity, a shaft hole extending into the screw rod is formed in the center of the bottom of the hexagonal counter bore, a rotating shaft is rotatably arranged on the inner side of a hole opening of the shaft hole through a bearing, a horizontally arranged circular plate is fixedly arranged at the lower end of the rotating shaft, and tooth tips distributed in an annular shape are fixedly arranged at the edge of the bottom of the circular plate, the side part of the screw rod is provided with a screw hole communicated with the shaft hole, a screw is connected with the screw in the screw hole in an internal thread manner, a gear which is coaxial with the screw is fixedly arranged at the rear end of the screw, and the gear is meshed with the tooth tip.

Preferably, both the screw head and the cover plate are of cylindrical design.

Preferably, the bearing is sleeved on the outer side of the limiting rod, and the bearing on the outer side of the limiting rod is fixedly connected with the inner side wall of the through hole.

Preferably, the diameter of the limiting rod is the same as that of the cross rod, and the width of the bayonet is slightly larger than that of the cross rod.

Preferably, the upper end of the limiting rod is provided with a straight knife groove or a cross knife groove, and the upper end of the limiting rod is flush with the upper surface of the cover plate.

Preferably, the upper end of the rotating shaft is provided with a straight knife groove or a cross knife groove.

Preferably, the diameter of the gear is smaller than the diameter of the screw.

The utility model has the advantages that: the utility model discloses a be equipped with the apron on the upper portion of spiral shell head, the lateral part that the upper portion of spiral shell head is located six arris counter bores has seted up the mounting hole of vertical setting, insert in the mounting hole and be equipped with the installation pole, installation pole and mounting hole axial sliding fit, be equipped with the spring between the lower extreme of installation pole and the hole bottom of mounting hole, the one end of spring rotates with the lower extreme of installation pole to be connected, the other end is connected with the hole bottom fixed of mounting hole, the edge on the upper portion of apron has seted up a plurality of through-holes, the installation pole wears to establish in one of them through-hole, installation pole and through-hole fixed connection, all insert in other through-holes and be equipped with the gag lever post, the lower extreme of every gag lever post all is equipped with the horizontal setting, the periphery that the inside of spiral shell head is located six arris counter bores has seted up a plurality of installation chambeies that correspond with the gag lever post position, the bayonet socket that communicates with the installation cavity is all seted up directly over the upper surface of spiral shell head, the lower end of the limiting rod penetrates through the bayonet, the upper surface of the cross rod is just contacted with the top inside the mounting cavity, when the cover plate is required to be opened, all the limiting rods must be correctly rotated, so that the cross rods at the lower end of the limiting rods are in the same direction as the bayonet, the cross rods can be drawn out from the bayonet and move upwards, the mounting rods push the cover plate to ascend under the action of the elastic force of the spring, then the cover plate can be rotated to disassemble the bolt, however, when all the limiting rods are required to be correctly rotated, the cover plate cannot ascend, the bolt cannot be disassembled, the anti-theft effect is achieved, the shaft hole extending into the screw rod is formed in the center of the bottom of the hexagonal counter bore, the rotating shaft is rotatably arranged on the inner side of the hole of the shaft hole through a bearing, the horizontal round plate is fixedly arranged at the lower end of the rotating shaft, and the annular tooth tips are fixedly arranged at the edge of the bottom of the round plate, the communicating screw with the shaft hole is seted up to the lateral part of screw rod, screw female connection has the screw, the rear end of screw is fixed to be equipped with the gear with the coaxial setting of screw, the gear is connected with the meshing of prong, after this bolt is screwed up, can rotate the pivot with the screwdriver, the pivot drives the plectane and rotates, the prong of plectane bottom drives gear revolve, screw and screw thread fit make the screw precess to the outer end of screw, the head of screw has just bored the inside of the object of screw rod lateral part, can effectively avoid this bolt free rotation, the function of auto-lock has been played, compared with the prior art, can effectively prevent that the bolt from becoming flexible, effectively prevent that the bolt from being dismantled at will by other people, the security and the reliability of bolt use have been promoted, moreover, the steam generator is simple in structure, high durability and convenient use, and convenient popularization and application.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural view of the anti-theft self-locking bolt of the present invention.

In the figure: 1-screw head, 2-screw rod, 3-hexagonal counter bore, 4-cover plate, 41-through hole, 5-mounting hole, 6-mounting rod, 7-spring, 8-limiting rod, 9-cross rod, 10-mounting cavity, 11-bayonet, 12-shaft hole, 13-rotating shaft, 14-circular plate, 15-tooth point, 16-screw hole, 17-screw and 18-gear.

[ detailed description ] embodiments

Referring to fig. 1, the utility model relates to an anti-theft self-locking bolt, which comprises a screw head 1, a screw rod 2, a hexagonal counter bore 3, a cover plate 4, a mounting hole 5, a mounting rod 6, a spring 7, a limiting rod 8, a cross rod 9, a mounting cavity 10, a bayonet 11, a shaft hole 12, a rotating shaft 13, a circular plate 14, a tooth tip 15, a screw hole 16, a screw 17 and a gear 18, wherein the screw rod 2 is fixedly arranged at the bottom of the screw head 1, the hexagonal counter bore 3 is arranged at the central position of the upper part of the screw head 1, the cover plate 4 is arranged at the upper part of the screw head 1, the vertically arranged mounting hole 5 is arranged at the side part of the hexagonal counter bore 3 at the upper part of the screw head 1, the mounting rod 6 is inserted into the mounting hole 5, the mounting rod 6 is axially matched with the mounting hole 5 in a sliding manner, the spring 7 is arranged between the lower end of the mounting rod 6 and the hole bottom of the mounting hole 5, one end of the spring 7 is rotatably connected with the lower end of the mounting rod 6, the other end of the cover plate is fixedly connected with the bottom of the mounting hole 5, the edge of the upper part of the cover plate 4 is provided with a plurality of through holes 41, the mounting rod 6 is arranged in one of the through holes 41 in a penetrating manner, the mounting rod 6 is fixedly connected with the through holes 41, other through holes 41 are internally provided with a limiting rod 8 in an inserted manner, the limiting rod 8 is in running fit with the through holes 41, the lower end of each limiting rod 8 is provided with a horizontal rod 9 which is horizontally arranged, the interior of the screw head 1 is positioned at the periphery of the hexagonal counter bore 3 and is provided with a plurality of mounting cavities 10 corresponding to the positions of the limiting rods 8, the upper surface of the screw head 1 is positioned right above each mounting cavity 10 and is provided with bayonets 11 communicated with the mounting cavities 10, the lower end of the limiting rod 8 penetrates through the bayonets 11, the upper surface of the horizontal rod 9 is just contacted with the top of the interior of the mounting cavities 10, the central position of the bottom of the hexagonal counter bore 3 is provided with a shaft hole 12 extending into the screw rod 2, the inner side of the orifice of the shaft hole 12 is rotatably provided with a rotating shaft 13 through a bearing, the lower end of the rotating shaft 13 is fixedly provided with a circular plate 14 which is horizontally arranged, the edge of the bottom of the circular plate 14 is fixedly provided with a tooth tip 15 which is annularly distributed, the side part of the screw rod 2 is provided with a screw hole 16 which is communicated with the shaft hole 12, the screw hole 16 is connected with a screw 17 in an internal thread manner, the rear end of the screw 17 is fixedly provided with a gear 18 which is coaxially arranged with the screw 17, the gear 18 is meshed with the tooth tip 15, the screw head 1 and the cover plate 4 are both in a cylindrical design, the outer side of the limiting rod 8 is sleeved with a bearing, the bearing at the outer side of the limiting rod 8 is fixedly connected with the inner side wall of the through hole 41, the diameter of the limiting rod 8 is the same as that of the cross rod 9, the width of the bayonet 11 is slightly larger than that of the cross rod 9, and the upper end of the limiting rod 8 is provided with a straight knife groove or a cross-shaped knife groove, the upper end of the limiting rod 8 is flush with the upper surface of the cover plate 4, the upper end of the rotating shaft 13 is provided with a straight knife groove or a cross knife groove, and the diameter of the gear 18 is smaller than that of the screw 17.

The utility model discloses the working process: when the bolt needs to be screwed down, in an initial state, the cross rod 9 and the bayonet 11 are in the same direction, under the elastic force action of the spring 7, the mounting rod 6 is jacked up to separate the cover plate 4 from the screw head 1, then the cover plate 4 is rotated to enable the cover plate 4 not to be positioned right above the screw head 1, then a hexagonal dismounting tool is inserted into the hexagonal counter bore 3 to screw down the bolt, after the bolt is screwed down, then the rotating shaft 13 is rotated by a screwdriver, the rotating shaft 13 drives the circular plate 14 to rotate, the tooth tip 15 at the bottom of the circular plate 14 drives the gear 18 to rotate, the screw 17 is in threaded fit with the screw hole 16 to enable the screw 17 to be screwed into the outer end of the screw hole 16, the head of the screw 17 is drilled into the inside of an object at the side part of the screw rod 2, the bolt can be effectively prevented from rotating freely, the self-locking function is achieved, then the cover plate 4 is rotated to enable the cover plate 4 to be positioned right above the screw head 1, then the cover plate 4 is pressed downwards, make horizontal pole 9 of 8 lower extremes of gag lever posts pass bayonet socket 11, then rotate all gag lever posts 8 with the screwdriver at will, make horizontal pole 9 and bayonet socket 11 syntropy, the upper portion of horizontal pole 9 supports at the interior top of installation cavity 10, if want to dismantle this bolt again, just must be correct rotate all gag lever posts 8 and make horizontal pole 9 and bayonet socket 11 syntropy talent go, this is very difficult, consequently, just can play the effect of theftproof, compare with prior art, can prevent effectively that the bolt from becoming flexible, prevent effectively that the bolt from being dismantled by other people at will, the security and the reliability that the bolt used have been promoted, moreover, the steam generator is simple in structure, high durability and convenient use, and convenient popularization and application.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. An anti-theft self-locking bolt is characterized in that: comprises a screw head (1), a screw rod (2), a hexagonal counter bore (3), a cover plate (4), a mounting hole (5), a mounting rod (6), a spring (7), a limiting rod (8), a cross rod (9), a mounting cavity (10), a bayonet (11), a shaft hole (12), a rotating shaft (13), a circular plate (14), a tooth tip (15), a screw hole (16), a screw (17) and a gear (18), wherein the screw rod (2) is fixedly arranged at the bottom of the screw head (1), the hexagonal counter bore (3) is arranged at the central position of the upper part of the screw head (1), the cover plate (4) is arranged at the upper part of the screw head (1), the vertically arranged mounting hole (5) is arranged at the side part of the hexagonal counter bore (3) at the upper part of the screw head (1), the mounting rod (6) is inserted in the mounting hole (5), and the mounting rod (6) is in axial sliding fit with the mounting hole (5), be equipped with spring (7) between the hole bottom of the lower extreme of installation pole (6) and mounting hole (5), the one end of spring (7) rotates with the lower extreme of installation pole (6) to be connected, the hole bottom fixed connection of the other end and mounting hole (5), a plurality of through-holes (41) have been seted up at the edge on the upper portion of apron (4), install pole (6) are worn to establish in one of them through-hole (41), install pole (6) and through-hole (41) fixed connection, other all insert in through-hole (41) and be equipped with gag lever post (8), gag lever post (8) and through-hole (41) normal running fit, every the lower extreme of gag lever post (8) all is equipped with horizontal pole (9) that the level set up, the inside of spiral shell head (1) is located the periphery of six arris counter bore (3) and sets up a plurality of installation cavity (10) that correspond with gag lever post (8) position, the upper surface of spiral shell head (1) is located directly over every installation cavity (10) and all seted up with installation cavity (10) A bayonet (11) communicated with the limiting rod (8), wherein the lower end of the limiting rod passes through the bayonet (11), the upper surface of the cross bar (9) is just contacted with the top of the inner part of the mounting cavity (10), the center of the bottom of the hexagonal counter bore (3) is provided with a shaft hole (12) extending into the screw rod (2), the inner side of the hole opening of the shaft hole (12) is rotatably provided with a rotating shaft (13) through a bearing, a circular plate (14) which is horizontally arranged is fixedly arranged at the lower end of the rotating shaft (13), the edge of the bottom of the circular plate (14) is fixedly provided with tooth tips (15) which are distributed annularly, the side part of the screw rod (2) is provided with a screw hole (16) communicated with the shaft hole (12), the screw hole (16) is connected with a screw (17) through internal threads, a gear (18) which is coaxial with the screw (17) is fixedly arranged at the rear end of the screw (17), and the gear (18) is meshed with the tooth tip (15).

2. An anti-theft self-locking bolt according to claim 1, characterized in that: the screw head (1) and the cover plate (4) are both in cylindrical design.

3. An anti-theft self-locking bolt according to claim 1, characterized in that: the outside cover of gag lever post (8) is equipped with the bearing, the bearing and through-hole (41) inside wall fixed connection in the outside of gag lever post (8).

4. An anti-theft self-locking bolt according to claim 1, characterized in that: the diameter of the limiting rod (8) is the same as that of the cross rod (9), and the width of the bayonet (11) is slightly larger than that of the cross rod (9).

5. An anti-theft self-locking bolt according to claim 1, characterized in that: the upper end of the limiting rod (8) is provided with a straight knife groove or a cross knife groove, and the upper end of the limiting rod (8) is flush with the upper surface of the cover plate (4).

6. An anti-theft self-locking bolt according to claim 1, characterized in that: the upper end of the rotating shaft (13) is provided with a straight knife groove or a cross knife groove.

7. An anti-theft self-locking bolt according to any one of claims 1 to 6, wherein: the diameter of the gear (18) is smaller than that of the screw (17).