CN212615850U

CN212615850U - Anti-theft screw with locking washer

Info

Publication number: CN212615850U
Application number: CN202021194836.7U
Authority: CN
Inventors: 张云飞
Original assignee: Jiaxing Zhenchen Hardware Technology Co ltd
Current assignee: Jiaxing Zhenchen Hardware Technology Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-26
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses an antitheft screw with lock washer, including screw main part and lock washer, the screw main part still includes spiral shell head and double-screw bolt, the last through-hole that is equipped with of lock washer, the inside connecting rod that is equipped with of through-hole, the upper end of connecting rod is equipped with the projection, be equipped with reset spring on the projection, lock washer's lower surface is equipped with the lock sleeve, compares with prior art, the utility model discloses simple structure, reasonable in design need not special mounting tool alright with the theftproof installation that realizes the bolt, in addition, has still strengthened the locking performance of bolt, guarantees bolted connection's long-time stability and reliability.

Description

Anti-theft screw with locking washer

[ technical field ] A method for producing a semiconductor device

The utility model relates to a fastener technical field, especially a theftproof screw with lock washer.

[ background of the invention ]

At present, most of the screws used by people adopt national standards, and the screwing or the disassembling of the screws are realized by screwing nuts by standard tools such as a spanner, a four-character screwdriver and the like, so that the screws are very convenient to use.

However, in some special occasions and special articles, due to the characteristic of easy detachment, certain safety problems may be caused, for example, in facilities such as railways, highway bridges, power transmission towers, microwave communication towers, doors and windows, and the like, and lawless persons often use the facilities as objects of theft or destruction, which may cause extremely unsafe hidden dangers to the infrastructures, so that there is a need for an anti-theft screw with a locking washer.

[ Utility model ] content

The utility model discloses an aim at is solving the problem among the prior art, provides a theftproof screw with lock washer, the utility model discloses simple structure, reasonable in design need not special mounting tool alright with realize the theftproof installation of bolt, in addition, has still strengthened the locking performance of bolt, guarantees bolted connection's long-time stability and reliability.

In order to achieve the above purpose, the utility model provides an anti-theft screw with a lock washer, which comprises a screw main body and a lock washer, wherein the screw main body further comprises a screw head and a screw bolt, the bottom of the screw head is provided with the screw bolt, the top surface of the screw head is provided with a rotary groove, a first through groove is arranged below the rotary groove, an anti-theft block is arranged inside the first through groove, a boss corresponding to the rotary groove is arranged on the upper surface of the anti-theft block, the screw bolt is provided with an open groove transversely penetrating through the screw bolt, the bottom of the open groove is flush with the bottom of the screw head, a second through groove is arranged at the center of the open groove, the upper end of the second through groove is positioned inside the screw head and communicated with the first through groove, the lock washer is provided with a through hole, a connecting rod is arranged inside the through hole, the upper end of, the convex column corresponds to the second through groove, a return spring is arranged on the convex column, and a locking sleeve is arranged on the lower surface of the locking washer.

Preferably, the width of the connecting rod is smaller than the width of the open slot, the section of the connecting rod is square, and the length of the connecting rod is equal to that of the open slot.

Preferably, the lower surface of the locking washer is further provided with anti-slip threads, and the anti-slip threads are arc threads rotating clockwise.

Preferably, the lower end of the return spring is fixedly mounted on the convex column, and the diameter of the return spring is smaller than that of the second through groove.

Preferably, the locking sleeve is a circular table sleeve with the thickness gradually reduced from top to bottom wall, and an elastic anti-loosening sleeve is arranged on the outer side of the locking sleeve.

Preferably, the swivelling chute is regular hexagon groove, first logical groove is cylindrical logical groove, first size that leads to the groove is greater than the swivelling chute, the top surface that first logical groove is equipped with the barb.

Preferably, the outer edge of the upper surface of the anti-theft block is provided with an annular bag sleeve, and the inside of the annular bag sleeve is provided with an adhesive.

The utility model has the advantages that:

1. the utility model discloses a mode through setting up swivelling chute, first logical groove, theftproof piece, connecting rod, projection and reset spring utilizes projection and reset spring jack-up the theftproof piece in first logical groove after the screw installation is accomplished, utilizes the theftproof piece to fill up the swivelling chute, sets up the barb on the cooperation first logical groove top surface and sets up cyclic annular bag cover at the outer edge department of theftproof piece upper surface, when projection and reset spring jack-up the theftproof piece completely, the annular bag cover is punctureed to the barb, and the binder in the cyclic annular bag cover spills, bonds the theftproof piece fixedly, realizes the theftproof effect;

2. the utility model discloses a set up the mode of lock sleeve and anti-skidding line, increased extrusion force and frictional force between spiral shell head bottom surface and the work piece, promoted the holistic locking performance of screw.

[ description of the drawings ]

Fig. 1 is a schematic structural view of an anti-theft screw with a lock washer according to the present invention;

FIG. 2 is a top view of a locking washer of the anti-theft screw with a locking washer of the present invention;

FIG. 3 is a bottom view of a locking washer of the anti-theft screw with a locking washer of the present invention;

fig. 4 is an enlarged schematic view of a position a in the anti-theft screw with the lock washer according to the present invention.

In the figure: 1-screw main body, 2-locking washer, 21-through hole, 22-connecting rod, 23-convex column, 24-reset spring, 25-locking sleeve, 26-anti-slip thread, 27-elastic anti-loosening sleeve, 3-screw head, 31-rotary groove, 32-first through groove, 33-anti-theft block, 34-boss, 35-annular bag sleeve, 36-adhesive, 4-stud, 41-open groove and 42-second through groove.

[ detailed description ] embodiments

Referring to the drawings, the utility model relates to an anti-theft screw with a lock washer, which comprises a screw main body 1 and a lock washer 2, wherein the screw main body 1 further comprises a screw head 3 and a screw bolt 4, the bottom of the screw head 3 is provided with the screw bolt 4, the top surface of the screw head 3 is provided with a rotary groove 31, a first through groove 32 is arranged below the rotary groove 31, an anti-theft block 33 is arranged inside the first through groove 32, a boss 34 corresponding to the rotary groove 31 is arranged on the upper surface of the anti-theft block 33, an open groove 41 transversely penetrating through the screw bolt 4 is arranged on the screw bolt 4, the bottom of the open groove 41 is flush with the bottom of the screw head 3, a second through groove 42 is arranged at the center of the open groove 41, the upper end of the second through groove 42 is positioned inside the screw head 3 and communicated with the first through groove 32, the lock washer 2 is provided with a through hole 21, a connecting rod 22 is arranged inside, the lock washer 2 is installed inside the open groove 41 through the connecting rod 22, the convex column 23 corresponds to the second through groove 42, the convex column 23 is provided with the return spring 24, and the lower surface of the lock washer 2 is provided with the locking sleeve 25.

The width of the connecting rod 22 is smaller than the width of the opening groove 41, the cross section of the connecting rod 22 is square, and the length of the connecting rod 22 is equal to the length of the opening groove 41.

The lower surface of the lock washer 2 is further provided with anti-slip threads 26, and the anti-slip threads 26 are arc threads rotating clockwise.

The lower end of the return spring 24 is fixedly mounted on the convex column 23, and the diameter of the return spring 24 is smaller than that of the second through groove 42.

The locking sleeve 25 is a circular table sleeve with the thickness gradually reduced from top to bottom, and an elastic anti-loosening sleeve 27 is arranged on the outer side of the locking sleeve 25.

Wherein, the swivelling chute 31 is regular hexagon groove, first logical groove 32 is cylindrical logical groove, first logical groove 32's size is greater than swivelling chute 31, first logical groove 32's top surface is equipped with the barb.

Wherein, the outer edge of the upper surface of the anti-theft block 33 is provided with an annular bag sleeve 35, and the inside of the annular bag sleeve 35 is provided with a binder 36.

The utility model discloses a working process:

in the working process of the anti-theft screw with the locking washer of the utility model, the connecting rod 22 of the locking washer 2 can be aligned with the open slot 41, the locking washer 2 is arranged on the stud 4, then, the screw body 1 is aligned with the mounting hole, the mounting tool is aligned with the rotary groove 31, the screw body 1 is screwed into the mounting hole, in the process of continuously screwing the screw main body 1, the convex column 23 and the return spring 24 continuously rise until the return spring 24 completely jacks up the anti-theft block 33, so that the annular cuff 35 comes into contact with the barbs of the upper wall of the first through groove 32, the annular cuff 35 ruptures, releasing the adhesive 36, and at this point the adhesive 36 does not completely bond the anti-theft block 33 to the first through groove 32, but under the support of the return spring 24, the adhesive 36 will finally firmly adhere the anti-theft block 33 and the first through slot 32 together, and the installation of the anti-theft screw is completed.

Compared with the prior art, the utility model discloses a set up rotatory groove 31, first logical groove 32, theftproof piece 33, connecting rod 22, projection 23 and reset spring 24's mode, utilize projection 23 and reset spring 24 jack-up the theftproof piece 33 inside the first logical groove 32 after the screw installation is accomplished, utilize theftproof piece 33 to fill up rotatory groove 31, set up the barb on the cooperation first logical groove 32 top surface and set up cyclic annular bag cover 3 at the outer border department of the upper surface of theftproof piece 33, when projection 23 and reset spring 24 jack-up theftproof piece 33 completely, cyclic annular bag cover 35 is punctured to the barb, and the binder 36 inside cyclic annular bag cover 35 spills, bonds theftproof piece 33 fixed, realizes the theftproof effect; through the mode that sets up lock sleeve and 25 antiskid line 26, increased extrusion force and frictional force between spiral shell head 3 bottom surface and the work piece, promoted the holistic locking performance of screw.

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. The utility model provides an antitheft screw with lock washer which characterized in that: including screw main part (1) and locking washer (2), screw main part (1) still includes spiral shell (3) and double-screw bolt (4), the bottom of spiral shell (3) is equipped with double-screw bolt (4), the top surface of spiral shell (3) is equipped with swivelling chute (31), the below of swivelling chute (31) is equipped with first logical groove (32), first logical groove (32) inside is equipped with theftproof piece (33), be equipped with boss (34) that correspond with swivelling chute (31) on the upper surface of theftproof piece (33), be equipped with open slot (41) that transversely runs through double-screw bolt (4) on double-screw bolt (4), the tank bottom and spiral shell (3) bottom of open slot (41), the center department of open slot (41) is equipped with the logical groove of second (42), the upper end that the logical groove (42) of second is located spiral shell (3) inside and is linked together with first logical groove (32), be equipped with through-hole (21) on locking washer (2), through-hole (21) inside connecting rod (22) that is equipped with, the upper end of connecting rod (22) is equipped with projection (23), open slot (41) is installed through connecting rod (22) inside lock washer (2), projection (23) are corresponding with second logical groove (42), be equipped with reset spring (24) on projection (23), the lower surface of lock washer (2) is equipped with lock sleeve (25).

2. The antitheft screw with lock washer of claim 1 wherein: the width of the connecting rod (22) is smaller than the width of the opening groove (41), the section of the connecting rod (22) is square, and the length of the connecting rod (22) is equal to that of the opening groove (41).

3. The antitheft screw with lock washer of claim 1 wherein: the anti-skidding lock ring is characterized in that anti-skidding threads (26) are further arranged on the lower surface of the locking washer (2), and the anti-skidding threads (26) are arc threads rotating clockwise.

4. The antitheft screw with lock washer of claim 1 wherein: the lower end of the return spring (24) is fixedly arranged on the convex column (23), and the diameter of the return spring (24) is smaller than that of the second through groove (42).

5. The antitheft screw with lock washer of claim 1 wherein: the locking sleeve (25) is a circular table sleeve with the thickness gradually reduced from top to bottom wall, and an elastic anti-loosening sleeve (27) is arranged on the outer side of the locking sleeve (25).

6. The antitheft screw with lock washer of claim 1 wherein: the swivelling chute (31) is regular hexagon groove, first logical groove (32) are cylindrical logical groove, the size that first logical groove (32) was greater than swivelling chute (31), the top surface that first logical groove (32) is equipped with the barb.

7. The antitheft screw with lock washer of claim 1 wherein: the outer edge of the upper surface of the anti-theft block (33) is provided with an annular bag sleeve (35), and a bonding agent (36) is arranged inside the annular bag sleeve (35).