Anti-theft screw convenient to install

Abstract

The anti-theft screw convenient to install comprises a screw body, a screw head, an anti-theft assembly, an anti-theft cover, a limiting block, a limiting groove, a first threaded hole and a limiting column, the screw head is arranged at one end of the screw body, the screw head and the screw body are integrally formed, the anti-theft assembly is arranged on the outer portion of the screw head in a sleeved mode, and the anti-theft cover is arranged on the anti-theft assembly. The anti-theft assembly comprises an anti-theft cover and a limiting block, the limiting block is arranged on the inner top wall of the anti-theft cover, and a limiting groove matched with the limiting block is formed in the upper portion of the screw head; a first threaded hole is formed in the side wall of the screw rod head, a limiting column is in threaded connection with the interior of the first threaded hole, the two limiting blocks are symmetrically arranged in the front-back direction, second threaded holes are formed in the lower portions of the limiting blocks, and the second threaded holes are aligned in the front-back direction. The anti-theft performance of the screw can be improved, the risk that equipment is stolen is reduced, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screw rod, especially the technical field of anti-theft screw rod convenient to install. BACKGROUND

[0002] As a key element in the field of machinery, the application range of screw rod is extremely wide. In mechanical manufacturing, screw rod is an important means of connecting parts, and can tightly connect two or more objects, such as steel beams, various parts of plates, etc. Meanwhile, it can also be used to adjust the position and posture of objects.

[0003] The screw rod currently used mainly rotates by thread. When connecting two objects, the two connected objects are respectively fixed with the screw rod by thread. In the connection and fastening of objects, the connected objects are loosened and fall off due to the slipping and loosening of the screw rod, thereby causing a series of problems and accidents.

[0004] To solve the problems in the above-mentioned technology, for example, application No. CN201320379122.7 discloses an anti-loosening screw rod, which comprises a first rod body with thread, a second rod body and a third rod body. Each rod body is cylindrical. The second rod body is located between the first rod body and the third rod body. The diameter of the second rod body is larger than that of the other two rod bodies. The connection between the first rod body and the second rod body adopts a circular arc transition. The connection between the second rod body and the third rod body adopts a circular arc transition. The center lines of the first rod body, the second rod body and the third rod body are on the same straight line. By setting three rod bodies with different diameters, when connecting two objects, the two connected objects are respectively fixed with each rod body by thread. In the connection and fastening of objects, the occurrence of loosening phenomenon is effectively prevented. However, the structure still has the following defects:

[0005] Although the structure is connected with the connected objects by thread through three rod bodies, the anti-theft effect of the structure is not good, which leads to easy disassembly, thereby being not conducive to the safety of equipment.

[0006] To solve the problems in the above-mentioned technology, for example, application No. CN201620686988.6 discloses an anti-theft screw rod not easy to disassemble, which comprises a rod body, a twisting head, a sleeve, a cap, and a blocking strip. The rod body top is fixed with the twisting head. The twisting head is externally sleeved with a sleeve. The twisting head side wall has a plurality of insertion slots. The insertion slots are inserted with blocking strips. The length of the blocking strip is greater than the depth of the insertion slot. The sleeve outer wall is provided with external threads. The sleeve side is provided with a groove. The groove is inserted with a plug strip. The cap is screwed on the sleeve. The cap is composed of a cover plate and a connecting pipe. The cover plate is fixed on the top of the connecting pipe. The connecting pipe inner wall has internal threads matched with the external threads. By setting the cylindrical sleeve and cap outside the twisting head, the twisting head cannot be twisted, the screw rod is not easy to disassemble, and the purpose of anti-theft is achieved. However, the structure still has the following defects:

[0007] Although the structure is arranged outside the screwing head by the cap, so that the screwing head cannot be screwed, but due to the single layer anti-theft structure, once the cap is removed, the device is still easy to be stolen, and the safety factor is low. SUMMARY

[0008] The utility model discloses a kind of anti-theft screw rods convenient to install, can improve the anti-theft performance of screw rod, to reduce the risk of device theft, increase security.

[0009] To achieve the above object, the utility model provides an anti-theft screw rod convenient to install, including screw rod, screw rod head, anti-theft component, anti-theft cover, limiting block, limiting groove, first threaded hole and limiting column, one end of the screw rod is equipped with screw rod head, the screw rod head is integrally formed with screw rod, the outside of the screw rod head is equipped with anti-theft component, the anti-theft component includes anti-theft cover and limiting block, the inner top wall of the anti-theft cover is equipped with limiting block, the upper of the screw rod head is equipped with the limiting groove compatible with limiting block;The side wall of the screw rod head is equipped with first threaded hole, and the inside of the first threaded hole is threadedly connected with limiting column.

[0010] Preferably, the number of limiting blocks is two, the two limiting blocks are symmetrically arranged front and back, and second threaded holes are formed below the limiting blocks.

[0011] Preferably, the number of limiting grooves is two, the two limiting grooves correspond to the two limiting blocks up and down respectively, and the limiting grooves all extend to the inner lower part of the screw rod head.

[0012] Preferably, the first threaded hole extends to the inside of the screw rod head and communicates with the two limiting grooves, and the first threaded hole and the second threaded hole are on the same center line.

[0013] Preferably, the end of the first threaded hole is connected with a clamping groove, the end of the limiting column is provided with a fixing block compatible with the clamping groove, and the limiting column is sequentially screwed into the first threaded hole, the second threaded hole and the clamping groove.

[0014] Preferably, the front end of the limiting column is provided with a first anti-theft hole, and the first anti-theft hole has a square structure.

[0015] Preferably, a second anti-theft hole is formed in the upper center position of the screw rod head, an anti-theft column is arranged in the second anti-theft hole, and a plum blossom groove is formed in the anti-theft column.

[0016] Preferably, a lock washer is sleeved at the connection between the screw rod and the screw rod head, and an anti-slip pattern is arranged on the lower end surface of the lock washer.

[0017] The utility model discloses the beneficial effect of:

[0018] 1. The utility model discloses a theftproof cover, limit block, limit groove and the common cooperation of limit post, can improve the theftproof performance of screw rod, through the two limit blocks on theftproof cover are inserted to the limit groove on screw head, subsequently limit post is screwed into first threaded hole and passes through the second threaded hole on two limit blocks, until the fixed block on limit post is embedded to the clamping groove, and then realize the close connection of theftproof cover and screw head, and then prevent the destruction and dismantling to equipment, even if the theftproof cover is dismantled with a large amount of time, but because the theftproof post and plum blossom groove are still arranged on screw head, need through the special tool of outside and insert theftproof post and plum blossom groove to be able to dismantle it, therefore there is no more physical strength and energy to continue to dismantle it, and then played the effect of double -layer theftproof, thereby greatly increased the security of equipment, solved the problem of only setting up single -layer theftproof structure, leading to the cap to be dismantled, still easy to occur the risk problem of equipment theft.

[0019] 2. The utility model discloses through setting up the lock washer, can increase the friction between screw rod and the connected object, so that the structure is not easy to loosen, and then prolong the service life of equipment. DRAWINGS

[0020] Figure 1 It is the front view of the theftproof screw of the utility model convenient to install;

[0021] Figure 2 It is theftproof assembly schematic view of the theftproof screw of the utility model convenient to install;

[0022] Figure 3 It is partial structure view of the theftproof screw of the utility model convenient to install;

[0023] Figure 4 It is the screw head section view of the theftproof screw of the utility model convenient to install;

[0024] In the drawing: 1-screw rod, 2-screw head, 3-theftproof assembly, 31-theftproof cover, 32-limit block, 4-limit groove, 5-first threaded hole, 51-clamping groove, 6-limit post, 61-fixed block, 62-first theftproof hole, 7-second threaded hole, 8-second theftproof hole, 9-theftproof post, 10-plum blossom groove, 11-lock washer. CONCRETE IMPLEMENTATION

[0025] Reference Figures 1 to 4The utility model provides a kind of anti-theft screw convenient to install, including screw 1, screw head 2, anti-theft component 3, anti-theft cover 31, limiting block 32, limiting groove 4, first threaded hole 5 and limiting column 6, one end of the screw 1 is equipped with screw head 2, the screw head 2 is integrally formed with screw 1, the outside of the screw head 2 is equipped with anti-theft component 3, the anti-theft component 3 includes anti-theft cover 31 and limiting block 32, the inner top wall of the anti-theft cover 31 is equipped with limiting block 32, the upper of the screw head 2 is equipped with the limiting groove 4 compatible with limiting block 32;The side wall of the screw head 2 is equipped with first threaded hole 5, the inside thread of first threaded hole 5 is connected with limiting column 6, and the surface of screw head 2 is plated in the present application, such as galvanizing or chrome plating, these treatments not only can improve corrosion resistance, but also can make surface more smooth, so even if anti-theft cover 31 is removed, screw 1 cannot be easily removed with ordinary tools, to further increase the anti-theft effect.

[0026] Reference Figure 2 , the number of limiting block 32 is two, two limiting block 32 is symmetrically arranged front and back, the lower of limiting block 32 is equipped with second threaded hole 7, second threaded hole 7 is arranged front and back alignment, by limiting block 32 is symmetrically arranged front and back, so that limiting column 6 can be screwed into two second threaded holes 7 in turn, to complete the installation of anti-theft cover 31 and screw head 2.

[0027] Reference Figure 3 , the number of limiting groove 4 is two, two limiting groove 4 is respectively corresponding with two limiting block 32 up and down, and the limiting groove 4 all extend to the inner lower of screw head 2, by setting limiting groove 4, so that limiting block 32 can be aligned with limiting groove 4 and inserted, so as to facilitate the installation of anti-theft cover 31.

[0028] Reference Figure 4 , the first threaded hole 5 extends to the inside of screw head 2 and communicates with two limiting groove 4, and the first threaded hole 5 and the second threaded hole 7 are on the same center line, by screwing limiting column 6 from first threaded hole 5, and passing through two second threaded holes 7 in turn, so that limiting column 6 can firmly fix anti-theft cover 31 on screw head 2, to make anti-theft cover 31 not easily fall off.

[0029] Reference Figure 4 , the end of first threaded hole 5 is communicated with clamping groove 51, the end of limiting column 6 is equipped with fixed block 61 compatible with clamping groove 51, one end of limiting column 6 is connected with first threaded hole 5, second threaded hole 7 and clamping groove 51 in turn, by being equipped with fixed block 61 at the end of limiting column 6, so that limiting column 6 can be embedded into clamping groove 51 through fixed block 61 after being completely screwed into the inside of screw head 2, to further improve the connection fastening between anti-theft cover 31 and screw head 2.

[0030] Referring to Figure 3 , the front end of the limiting column 6 is provided with a first anti-theft hole 62, which is in a square structure. By providing the first anti-theft hole 62, the limiting column 6 needs to be twisted by a tool matched with the first anti-theft hole 62, so as to further improve the anti-theft effect and avoid the limiting column 6 being easily twisted out.

[0031] Referring to Figure 1 and Figure 3 , a second anti-theft hole 8 is formed in the upper center position of the screw head 2, and an anti-theft column 9 is arranged in the second anti-theft hole 8. A keyway 10 is formed in the anti-theft column 9. By providing the second anti-theft hole 8, the screw head 2 needs to be inserted into the anti-theft column 9 and the keyway 10 by a special tool from the outside before it can be disassembled, so as to further improve the anti-theft effect and avoid the screw 1 being easily twisted out.

[0032] Referring to Figure 3 , a lock washer 11 is arranged at the connection between the screw 1 and the screw head 2. The lower end surface of the lock washer 11 is provided with anti-skid lines. By providing the lock washer 11, the friction between the screw 1 and the connected object can be increased, so that the structure is not easy to loosen, thereby prolonging the service life of the equipment.

[0033] The working process of the anti-theft screw convenient to install is as follows:

[0034] In the working process of the anti-theft screw convenient to install, first, the screw 1 is twisted into the connected object by a special tool, and then the nut is screwed in for fixation. Then, the two limiting blocks 32 on the anti-theft cover 31 are inserted into the limiting grooves 4 on the screw head 2. Then, the limiting column 6 is twisted into the first threaded hole 5 and passes through the second threaded holes 7 on the two limiting blocks 32, until the fixing block 61 on the limiting column 6 is embedded into the clamping groove 51, so as to realize the close connection between the anti-theft cover 31 and the screw head 2, thereby preventing the equipment from being damaged and disassembled. Even if a lot of time is consumed to disassemble the anti-theft cover 31, since the anti-theft column 9 and the keyway 10 are also arranged on the screw head 2, a special tool from the outside needs to be inserted into the anti-theft column 9 and the keyway 10 before the screw head 2 can be disassembled, so there is no more physical strength and energy to continue to disassemble it, thereby achieving the effect of double-layer anti-theft, thereby greatly increasing the safety of the equipment.

[0035] The above embodiments are illustrative of the utility model, not limiting of the utility model. Any simple transformation of the utility model belongs to the protection scope of the utility model.

Claims

1. A tamper-resistant screw for ease of installation, characterized by: Including screw rod (1), screw rod head (2), anti-theft assembly (3), anti-theft cover (31), limiting block (32), limiting groove (4), first threaded hole (5) and limiting column (6), one end of the screw rod (1) is equipped with screw rod head (2), the screw rod head (2) is integrally formed with screw rod (1), the outside of the screw rod head (2) is equipped with anti-theft assembly (3), the anti-theft assembly (3) includes anti-theft cover (31) and limiting block (32), the inner top wall of the anti-theft cover (31) is equipped with limiting block (32), the upper portion of the screw rod head (2) is equipped with limiting groove (4) matched with limiting block (32); The side wall of the screw rod head (2) is equipped with a first threaded hole (5), and the first threaded hole (5) is internally threadedly connected with a limiting column (6).

2. A tamperproof screw for ease of installation as claimed in claim 1 wherein: The number of the limiting block (32) is two, the two limiting blocks (32) are symmetrically arranged front and back, and the lower portion of the limiting block (32) is provided with a second threaded hole (7), and the second threaded hole (7) is arranged front and back in alignment.

3. The tamper-resistant screw of claim 1, wherein: The number of the limiting groove (4) is two, the two limiting grooves (4) correspond to the two limiting blocks (32) up and down respectively, and the limiting groove (4) extends to the inner lower portion of the screw rod head (2).

4. A tamperproof screw for ease of installation as claimed in claim 2 wherein: The first threaded hole (5) extends to the inside of the screw rod head (2) and communicates with the two limiting grooves (4), and the first threaded hole (5) and the second threaded hole (7) are on the same center line.

5. A tamperproof screw for ease of installation as claimed in claim 2 wherein: The end of the first threaded hole (5) is communicated with a clamping groove (51), the end of the limiting column (6) is provided with a fixing block (61) matched with the clamping groove (51), and one end of the limiting column (6) is sequentially screwed into the first threaded hole (5), the second threaded hole (7) and the clamping groove (51) and connected.

6. A tamperproof screw for ease of installation as claimed in claim 1 wherein: The front end of the limiting column (6) is provided with a first anti-theft hole (62), and the first anti-theft hole (62) is a square structure.

7. A tamperproof screw for ease of installation as claimed in claim 1 wherein: A second anti-theft hole (8) is formed in the upper center position of the screw rod head (2), the second anti-theft hole (8) is provided with an anti-theft column (9), and a plum blossom groove (10) is formed in the anti-theft column (9).

8. A tamperproof screw for ease of installation as claimed in claim 1 wherein: The connecting portion of the screw rod (1) and the screw rod head (2) is provided with an anti-loose washer (11), and the lower end surface of the anti-loose washer (11) is provided with anti-skid lines.

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