CN212959472U

CN212959472U - Self-locking fastening bolt

Info

Publication number: CN212959472U
Application number: CN202021096970.3U
Authority: CN
Inventors: 朱玉传
Original assignee: Shenyang Boyan Railway Vehicle Fittings Co ltd
Current assignee: Shenyang Boyan Railway Vehicle Fittings Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-13
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a bolt technical field just discloses a from locking-type fastening bolt, including the head, the bottom fixedly connected with screw rod of head, the both sides on screw rod top all are equipped with the recess, two the equal fixedly connected with fixture block of inner chamber of recess, the top of screw rod is equipped with the spout, the equal swing joint in inboard at spout both ends has the pull rod, the bottom of two pull rods respectively with the top fixed connection of one of them fixture block, the equal fixedly connected with connecting rod in both sides at spout inner chamber middle part. This from locking-type fastening bolt, through the setting of fixture block, this bolt stretches out the outside of this bolt at the in-process fixture block that uses, and the end of fixture block contacts with the inner wall of bolt hole, and the bolt can't remove in the bolt hole, has realized the auto-lock of this bolt, and this bolt can not produce because of reasons such as vibration not hard up at the in-process that uses, has improved the security of this bolt, the use of this bolt of being convenient for.

Description

Self-locking fastening bolt

Technical Field

The utility model relates to a bolt technical field specifically is a from locking-type fastening bolt.

Background

The bolt is a fastener commonly used for fastening two or more parts or components into a whole, and consists of a head part and a screw (a cylinder with external threads), and the bolt is usually fixed by a nut in the using process.

The existing bolt does not have the self-locking function, when the bolt is used in equipment or environment with vibration, the bolt is easy to loosen, the normal use of the equipment is influenced, the equipment is seriously damaged, casualties of personnel are seriously injured, and unnecessary loss is caused.

SUMMERY OF THE UTILITY MODEL

The not enough to current fastening bolt, the utility model provides a from locking-type fastening bolt possesses the advantage that can lock etc. and solved the problem that proposes among the above-mentioned background.

The utility model provides a following technical scheme: the utility model provides a from locking-type fastening bolt, includes the head, the bottom fixedly connected with screw rod of head, the both sides on screw rod top all are equipped with the recess, two the equal fixedly connected with fixture block in inner chamber of recess, the top of screw rod is equipped with the spout, the equal swing joint in inboard at spout both ends has the pull rod, the bottom of two pull rods respectively with the top fixed connection of one of them fixture block, the equal fixedly connected with connecting rod in both sides at spout inner chamber middle part, and the other end fixedly connected with pulley of connecting rod, two the inboard equal fixedly connected with stay cord one in middle part of pull rod, stay cord one contacts with the bottom of corresponding pulley.

Preferably, the shape of the bottom end of the screw is a circular truncated cone, and the diameter of the bottom of the screw is smaller than that of the top end of the screw.

Preferably, the middle part of the head and the middle part of the top end of the screw rod are both provided with a connecting groove, a second pull rope is movably connected in the connecting groove, one end of the second pull rope extends to the outer side of the head, one end of the second pull rope is fixedly connected with a pull ring, the other end of the second pull rope extends to an inner cavity of the sliding groove, and the other ends of the first pull ropes are fixedly connected with the bottom of the second pull rope.

Preferably, the top of the head is fixedly connected with a limiting block, a gap is reserved between the limiting block and the diameter of the head, and the gap is matched with the pull rope.

Preferably, the inner cavities of the two grooves are fixedly connected with springs, and the other ends of the springs are fixedly connected with the clamping blocks.

Preferably, the length of the fixture block is smaller than the diameter of the groove, and the tail end of the fixture block is fixedly connected with the soft rubber pad.

With current fastening bolt contrast, the utility model discloses possess following beneficial effect:

1. this from locking-type fastening bolt, through the pull ring, convenient to use person stimulates stay cord two, and when the user outwards stimulates stay cord two, stay cord two drives stay cord one and upwards removes, and stay cord one stimulates the pull rod and inwards removes, and the pull rod drives the fixture block and inwards removes, and the fixture block removes to the inner chamber of recess, and fixture block and bolt hole separation, spring are compressed, and convenient to use person takes off this bolt.

2. This from locking-type fastening bolt, through the setting of fixture block, this bolt stretches out the outside of this bolt at the in-process fixture block that uses, and the end of fixture block contacts with the inner wall of bolt hole, and the bolt can't remove in the bolt hole, has realized the auto-lock of this bolt, and this bolt can not produce because of reasons such as vibration not hard up at the in-process that uses, has improved the security of this bolt, the use of this bolt of being convenient for.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a partial internal view of the structure of FIG. 1 of the present invention;

FIG. 3 is a top view of the head of the present invention;

fig. 4 is a schematic view of the structure of the sliding chute of the present invention.

In the figure: 1. a head portion; 2. a screw; 3. connecting grooves; 4. a second pull rope; 5. a pull ring; 6. a limiting block; 7. a chute; 8. a groove; 9. a spring; 10. a pulley; 11. pulling a first rope; 12. a pull rod; 13. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a self-locking fastening bolt comprises a head 1, a screw 2 is fixedly connected to the bottom of the head 1, two grooves 8 are respectively formed on two sides of the top end of the screw 2, clamping blocks 13 are fixedly connected to the inner cavities of the two grooves 8, the clamping blocks 13 can abut against the inner walls of bolt holes during use of the bolt through the arrangement of the clamping blocks 13, so that the bolt cannot move in the bolt holes, the self-locking of the bolt is realized, a sliding groove 7 is formed in the top end of the screw 2, pull rods 12 are movably connected to the inner sides of two ends of the sliding groove 7, a user can conveniently move the clamping blocks 13 into the grooves 8 through the arrangement of the pull rods 12, the bolt can be conveniently removed, the bottoms of the two pull rods 12 are respectively and fixedly connected to the top of one clamping block 13, connecting rods are fixedly connected to two sides of the middle of the inner cavity of, through the arrangement of the pulley 10, the direction of force applied to the pull ropes 11 by a user can be changed by the pulley 10, so that the pull ropes 11 can pull the pull rods 12 to move, the pull ropes 11 are fixedly connected to the middle parts of the inner sides of the two pull rods 12, and the pull ropes 11 are in contact with the bottom of the corresponding pulley 10.

Wherein, the shape of 2 bottoms of screw rod is the round platform type, and the diameter of 2 bottoms of screw rod is less than the diameter on top, and through the setting of 2 bottoms of screw rod, the diameter of this bolt bottom is less than the diameter of bolt hole, and convenient to use person stretches into the bolt hole to this bolt, practices thrift the user and puts into the bolt hole time to the bolt, has improved work efficiency.

Wherein, the middle part on head 1 and the middle part on 2 tops of screw rod all are equipped with spread groove 3, and swing joint has two 4 stay cords in the spread groove, the one end of two 4 stay cords extends to the outside of head 1, the one end fixedly connected with pull ring 5 of two 4 stay cords, the other end of two 4 stay cords extends to the inner chamber of spout 7, the other end of two 11 stay cords all with two 4 bottom fixed connection of stay cords, through pull ring 5, convenient to use person stimulates two 4 stay cords, when the user outwards stimulates two 4 stay cords, two 4 stay cords drive 11 rebound of stay cords, 11 a pulling pull rod of stay cord 12 moves to the inboard, pull rod 12 drives fixture block 13 and moves to the inboard, fixture block 13 moves to the inner chamber of recess 8, fixture block 13 and bolt hole separation, spring 9 is compressed.

Wherein, the top fixedly connected with stopper 6 of head 1, stopper 6 and head diameter leave the clearance, and two 4 looks adaptations of clearance and stay cord, can fix stay cord two 4 through stopper 6, and convenient to use person takes off this bolt.

Wherein, the equal fixedly connected with spring 9 of inner chamber of two recesses 8, spring 9's the other end and fixture block 13 fixed connection, through the setting of spring 9, spring 9's resilience force can outwards promote fixture block 13, makes fixture block 13 contact with the bolt hole all the time, fixes this bolt, realizes the auto-lock of this bolt.

Wherein, the length of fixture block 13 is less than the diameter of recess 8, and through the setting of fixture block 13 length, fixture block 13 can remove to the inner chamber of recess 8, and convenient to use person takes off this bolt, and the soft cushion of terminal fixedly connected with of fixture block 13, through the setting of soft cushion, fixture block 13 can closely laminate with the inner wall of bolt hole, the fixed of this bolt of being convenient for.

The working principle is as follows: when the bolt is used, the bolt is screwed into the matched bolt hole, a user rotates the pull rope II 4 to separate the pull rope II 4 from the limiting block 6, the pull rope II 4 moves to the inner cavity of the sliding groove 7 under the action of the resilience force of the spring 9, the pull rope I11 has no tension on the pull rod 12, the resilience force of the spring 9 pushes the fixture block 13 fixedly connected with the pull rope II outwards, the tail end of the fixture block 13 moves to the outer side of the bolt, the tail end of the fixture block 13 is tightly attached to the inner wall of the bolt hole, the bolt is fixed in the bolt hole, the self-locking of the bolt is realized, the bolt cannot be loosened in the working process, the safety of the bolt is improved, when the bolt needs to be taken down, the user pulls the pull rope II 4 outwards, the length of the exposed length of the pull rope II 4 is long, the tail end of the pull rope II 4 moves upwards, the pull rope II 4 pulls the pull, the pull rod 12 is pulled by the first pull rope 11 to move towards the inner side, the pull rod 12 drives the clamping block 13 to move towards the inner side, the clamping block 13 moves to the inner cavity of the groove 8, the clamping block 13 is separated from the bolt hole, the spring 9 is compressed, the user clamps the second pull rope 4 at the bottom of the limiting block 6, the length of the second pull rope 4 is fixed, the bolt is rotated reversely by the user, and the bolt is taken out.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A self-locking fastening bolt comprising a head (1), characterized in that: the bottom fixedly connected with screw rod (2) of head (1), the both sides on screw rod (2) top all are equipped with recess (8), two the equal fixedly connected with fixture block (13) of inner chamber of recess (8), the top of screw rod (2) is equipped with spout (7), the equal swing joint in inboard at spout (7) both ends has pull rod (12), the bottom of two pull rods (12) respectively with the top fixed connection of one of them fixture block (13), the equal fixedly connected with connecting rod in both sides at spout (7) inner chamber middle part, and the other end fixedly connected with pulley (10) of connecting rod, two the equal fixedly connected with stay cord (11) in middle part of pull rod (12) inboard, the bottom of stay cord (11) and corresponding pulley (10) contacts mutually.

2. The self-locking fastening bolt of claim 1, characterized in that: the bottom end of the screw rod (2) is in a round table shape, and the diameter of the bottom of the screw rod (2) is smaller than that of the top end of the screw rod.

3. The self-locking fastening bolt of claim 1, characterized in that: the middle part on the middle part of head (1) and screw rod (2) top all is equipped with spread groove (3), and swing joint has stay cord two (4) in spread groove (3), the one end of stay cord two (4) extends to the outside of head (1), the one end fixedly connected with pull ring (5) of stay cord two (4), the other end of stay cord two (4) extends to the inner chamber of spout (7), two the other end of stay cord one (11) all with the bottom fixed connection of stay cord two (4).

4. The self-locking fastening bolt of claim 1, characterized in that: the top fixedly connected with stopper (6) of head (1), stopper (6) and head diameter leave the clearance, and clearance and two (4) looks adaptations of stay cord.

5. The self-locking fastening bolt of claim 1, characterized in that: the inner cavities of the two grooves (8) are fixedly connected with springs (9), and the other ends of the springs (9) are fixedly connected with clamping blocks (13).

6. The self-locking fastening bolt of claim 1, characterized in that: the length of the clamping block (13) is smaller than the diameter of the groove (8), and the tail end of the clamping block (13) is fixedly connected with a soft rubber pad.