CN217842279U

CN217842279U - Anti-loosening expansion countersunk bolt for connecting fasteners

Info

Publication number: CN217842279U
Application number: CN202221622245.4U
Authority: CN
Inventors: 陈天涵; 陈天野
Original assignee: Jingjiang Feitian Fastener Manufacturing Co ltd
Current assignee: Jingjiang Feitian Fastener Manufacturing Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-18
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a locking inflation countersunk head bolt for fastener is connected, belong to the expansion bolts field, the installation structure comprises a sleeve pipe, fix the fastener connection on the wall body when the inflation countersunk head bolt, and the rotating screw rod makes the bolt enter into the sleeve pipe and let the sleeve pipe take place the inflation when, the screw rod drives the bolt rotation and when removing in the rotating, the bolt will rotate on the T type lantern ring of installation on connecting rod top surface connecting block through notch and T type annular of seting up, and drag the connecting rod with this when the displacement, the connecting rod will move in the expansion pipe through the direction draw runner, and drive in the expansion chamber that the anchor block got into in the expansion pipe, the inflation opening of seting up on the expansion pipe makes it give up behind the anchor block entering expansion chamber and lets the expansion pipe take place the inflation and fix in the wall, and the use of expansion bolts realizes two-stage fixed operation on the cooperation, thereby reach the purpose that improves the fastness after the installation of expansion bolts, and avoid the expansion bolts to receive and appear droing after shaking.

Description

Anti-loosening expansion countersunk bolt for connecting fasteners

Technical Field

The utility model relates to an expansion bolts field, in particular to locking expansion countersunk head bolt for fastener is connected.

Background

Expansion bolts, as one of the standard parts, are special threaded connectors for fastening pipe branches/hangers/brackets or equipment to walls, floors, columns. The expansion bolt is a composite standard part consisting of a countersunk bolt, an expansion pipe, a flat washer, a spring washer and a hexagon nut. Before use, the fixing body is first drilled with holes of corresponding size with impact electric drill (hammer), and the bolt and expanding tube are then installed into the holes and the nut is screwed to expand the bolt, expanding tube, installing part and fixing body into one integral. The bolt can expand after being screwed, the tail part of the bolt is provided with a big head, a round pipe with a diameter slightly larger than that of the bolt is sleeved on the outer surface of the bolt, the tail part is provided with a plurality of openings, after the bolt is screwed, the tail part of the big head is taken into the pipe with the opening, the pipe is punched to be big, the expansion effect is achieved, and then the fastening piece is connected to the ground or the wall, so that the fastening purpose is achieved. However, the conventional expansion countersunk head bolt is only fixed by the opened sleeve, so that the fixation is not firm, and the bolt is easy to loosen after being vibrated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a locking inflation countersunk head bolt for fastener is connected can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a locking inflation countersunk head bolt for fastener is connected, includes the sleeve pipe, the sheathed tube top is equipped with the plain washer, the top of plain washer is equipped with the spring washer, the top of spring washer is equipped with the nut, sheathed tube inside is equipped with the screw rod, the screw rod passes plain washer, spring washer and nut, the bottom of screw rod is equipped with the bolt, the bottom of bolt is equipped with reinforcing mechanism, reinforcing mechanism includes expansion pipe, connecting rod, reinforcing block and connecting block, the connecting rod passes through four side direction draw runner swing joint of outer wall in the expansion pipe, and connecting block fixed connection is at the top surface of connecting rod, the connecting block passes through T type lantern ring swing joint on the outer wall in the bottom of bolt, and reinforcing block fixed connection is in the bottom of connecting rod.

Preferably, the bottom of the bolt is provided with a notch, and the inner wall of the notch is provided with a T-shaped ring groove.

Preferably, the bottom surface of the expansion pipe is provided with an expansion cavity, the expansion cavity is in a trapezoidal shape, the top surface of the expansion cavity is positioned in the expansion pipe and provided with an inner cavity, and the top surface of the inner cavity is positioned in the expansion pipe and further provided with a movable cavity.

Preferably, expansion openings are formed in four sides of the outer wall of the expansion pipe respectively, the expansion openings are communicated with the expansion cavity and the inner cavity, and guide grooves are formed in four sides of the inner wall of the movable cavity respectively.

Preferably, the connecting rod alternates to be installed in the activity intracavity, and four sides of the outer wall of connecting rod respectively fixed mounting have the direction draw runner, direction draw runner slidable mounting is in the guide way, the bottom of connecting rod still fixed mounting have the reinforcement piece and be located the bottom of inflation pipe, and the reinforcement piece presents trapezoidal cylindric and is greater than the inflation chamber.

Preferably, the top surface fixed mounting of connecting rod has the connecting block and is located the notch, and fixed mounting has T type lantern ring on the outer wall of connecting block, T type lantern ring movable mounting is in T type annular.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, the reinforcing mechanism of setting, connect the fastener when the inflation countersunk head bolt and fix on the wall body, and the rotating screw rod makes the bolt enter into the sleeve pipe and let the sleeve pipe take place the inflation when, the screw rod drives the bolt rotation and removes at the rotating, the bolt will rotate on the T type lantern ring of installation on connecting rod top surface connecting block through notch and T type annular offered, and drag the connecting rod with this when the displacement, the connecting rod will move in the expansion pipe through the direction draw runner, and drive in the inflation chamber of seting up in the reinforcement block enters into the expansion pipe, the inflation opening of seting up on the expansion pipe makes its reinforcement block get into the expansion chamber after the expansion pipe takes place the inflation to fix in the wall, and expansion bolt's use realizes two-stage process fixed operation on the cooperation, thereby reach the purpose that improves expansion bolt installation back fastness, and avoid expansion bolt to receive and appear droing after shaking.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional schematic view of the bolt of the present invention;

fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention;

fig. 4 is a sectional and disassembled schematic view of the reinforcing mechanism of the present invention;

fig. 5 is the overall structure of the connecting rod of the present invention is a sectional schematic view.

In the figure: 1. a sleeve; 2. a flat washer; 3. a spring washer; 4. a nut; 5. a screw; 6. a bolt; 7. a reinforcement mechanism; 8. a recess; 9. a T-shaped ring groove; 10. an expansion pipe; 11. an expansion chamber; 12. an inner cavity; 13. a movable cavity; 14. a guide groove; 15. an expansion opening; 16. a connecting rod; 17. a reinforcing block; 18. a guide slider; 19. connecting blocks; 20. t-shaped lantern ring.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.

As shown in fig. 1-5, an anti-loose expansion countersunk head bolt for fastener connection comprises a sleeve 1, a flat washer 2 is arranged at the top of the sleeve 1, a spring washer 3 is arranged at the top of the flat washer 2, a nut 4 is arranged at the top of the spring washer 3, a screw 5 is arranged inside the sleeve 1, the screw 5 penetrates through the flat washer 2, the spring washer 3 and the nut 4, a bolt 6 is arranged at the bottom of the screw 5, a reinforcing mechanism 7 is arranged at the bottom of the bolt 6, the reinforcing mechanism 7 comprises an expansion pipe 10, a connecting rod 16, a reinforcing block 17 and a connecting block 19, the connecting rod 16 is movably connected in the expansion pipe 10 through a guide sliding strip 18 on the four sides of the outer wall, the connecting block 19 is fixedly connected to the top surface of the connecting rod 16, the connecting block 19 is movably connected in the bottom of the bolt 6 through a T-shaped lantern ring 20 on the outer wall, and the reinforcing block 17 is fixedly connected to the bottom of the connecting rod 16.

As shown in fig. 2-5, in this embodiment, in order to achieve the purpose of improving the firmness of the expansion countersunk head bolt after use by the reinforcing mechanism 7, thereby performing a two-stage reinforcing function, a notch 8 is formed at the bottom of the bolt 6, a T-shaped ring groove 9 is formed on the inner wall of the notch 8, an expansion cavity 11 is formed on the bottom surface of the expansion tube 10, the expansion cavity 11 is trapezoidal, an inner cavity 12 is formed on the top surface of the expansion cavity 11 and positioned in the expansion tube 10, a movable cavity 13 is further formed on the top surface of the inner cavity 12 and positioned in the expansion tube 10, expansion openings 15 are respectively formed on four sides of the outer wall of the expansion tube 10, the expansion openings 15 are communicated with the expansion cavity 11 and the inner cavity 12, guide grooves 14 are respectively formed on four sides of the inner wall of the movable cavity 13, a connecting rod 16 is inserted and installed in the movable cavity 13, guide sliding strips 18 are respectively fixedly installed on four sides of the outer wall of the connecting rod 16, the guide sliding strips 18 are slidably installed in the guide grooves 14, a block 17 is fixedly installed at the bottom of the expansion tube 10 and positioned at the bottom end of the expansion tube 10, and a T-shaped ring 20 is installed on the outer wall of the connecting rod 16, and a T-shaped ring is installed in the fixed ring sleeve 20;

the use of the expansion countersunk head bolt in cooperation with the upper reinforcing mechanism 7 is specifically operated as follows: the expansion countersunk head bolt and the reinforcing mechanism 7 are installed in the wall together, after a user rotates the screw rod 5 in the sleeve 1, the screw rod 5 drives the bolt 6 to rotate and move outwards, at the moment, the bolt 6 is movably installed at the bottom of the bolt 6 in a limiting way through the T-shaped sleeve ring 20 on the outer wall of the connecting block 19 installed at the top end of the connecting rod 16 along the T-shaped sleeve ring 9 on the inner wall of the groove of the notch 8 formed in the bottom surface in the rotating process, when the bolt 6 moves and enters the sleeve 1, the bolt 6 drives the connecting rod 16 to move out of the top of the expansion pipe 10, the connecting rod 16 moves upwards in the expansion cavity 11, the inner cavity 12 and the movable cavity 13, in the moving process, the guide sliding strip 18 installed on the outer wall of the connecting rod 16 slides in the guide groove 14 and plays a guiding role for the connecting rod 16, after the bolt 6 enters the sleeve 1 and expands the sleeve 1, in the process, the connecting rod 16 drives the reinforcing block 17 into the reinforcing mechanism 10 in the trapezoidal cylindrical reinforcing cavity 10 to be fixed on the expansion cavity 11 in a manner of preventing the expansion countersunk head from being loosened and being matched with the reinforcing mechanism, and further, so that the expansion bolt 11 and the reinforcing mechanism is installed on the expansion pipe 10 after the expansion of the expansion pipe 11 and the expansion.

While the invention has been described in detail with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Claims

1. An anti-loosening expansion countersunk head bolt for fastener connection, which comprises a sleeve (1) and is characterized in that: the top of sleeve pipe (1) is equipped with plain washer (2), the top of plain washer (2) is equipped with spring washer (3), the top of spring washer (3) is equipped with nut (4), the inside of sleeve pipe (1) is equipped with screw rod (5), plain washer (2), spring washer (3) and nut (4) are passed in screw rod (5), the bottom of screw rod (5) is equipped with bolt (6), the bottom of bolt (6) is equipped with reinforcing mechanism (7), reinforcing mechanism (7) are including expansion pipe (10), connecting rod (16), reinforcing block (17) and connecting block (19), connecting rod (16) are through four sides direction draw runner (18) swing joint in expansion pipe (10) of outer wall, and connecting block (19) fixed connection is at the top surface of connecting rod (16), connecting block (19) are through T type lantern ring (20) swing joint on the outer wall in the bottom of bolt (6), and reinforcing block (17) fixed connection is in the bottom of connecting rod (16).

2. An anti-loosening expansion countersunk bolt for fastener connection according to claim 1, wherein: a notch (8) is formed in the bottom of the bolt (6), and a T-shaped annular groove (9) is formed in the inner wall of the notch (8).

3. The anti-loosening expansion countersunk bolt for fastener connection as claimed in claim 2, wherein: expansion chamber (11) have been seted up to the bottom surface of expansion pipe (10), expansion chamber (11) present the trapezoidal, and the top surface of expansion chamber (11) is located expansion pipe (10) and has seted up inner chamber (12), the top surface of inner chamber (12) is located expansion pipe (10) and has still seted up movable chamber (13).

4. An anti-loosening expansion countersunk bolt for fastener connection according to claim 3, wherein: expansion openings (15) are formed in four sides of the outer wall of the expansion pipe (10) respectively, the expansion openings (15) are communicated with the expansion cavity (11) and the inner cavity (12), and guide grooves (14) are formed in four sides of the inner wall of the movable cavity (13) respectively.

5. The anti-loosening expansion countersunk bolt for fastener connection as claimed in claim 4, wherein: the connecting rod (16) is inserted and installed in the movable cavity (13), guide sliding strips (18) are fixedly installed on four sides of the outer wall of the connecting rod (16) respectively, the guide sliding strips (18) are installed in the guide grooves (14) in a sliding mode, reinforcing blocks (17) are further fixedly installed at the bottom of the connecting rod (16) and located at the bottom end of the expansion pipe (10), and the reinforcing blocks (17) are in a trapezoid cylinder shape and larger than the expansion cavity (11).

6. An anti-loosening expansion countersunk bolt for fastener connection according to claim 5, wherein: the top surface fixed mounting of connecting rod (16) has connecting block (19) and is located notch (8), and fixed mounting has T type lantern ring (20) on the outer wall of connecting block (19), T type lantern ring (20) movable mounting is in T type ring groove (9).