CN211009533U

CN211009533U - Self-locking bolt

Info

Publication number: CN211009533U
Application number: CN201921892161.0U
Authority: CN
Inventors: 范旭超; 范艳普; 张运茂
Original assignee: Ningbo Qingxi Metal Intelligent Technology Co ltd
Current assignee: Ningbo Hexin Standard Parts Co.,Ltd.
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-14
Anticipated expiration: 2029-11-05

Abstract

The utility model provides a self-locking bolt. The self-locking bolt comprises a screw rod and a nut, and is characterized in that: the utility model discloses a screw rod, including screw rod, nut, mount pad, latch, screw rod, nut, connecting rod, screw rod, nut, mounting seat, nut, connecting rod, nut, mounting seat, nut and screw rod, screw rod fixed mounting is in one side of the nut, the nut is kept away from to the screw rod one end and is the screw thread end, the fixed screw thread that is provided with in the screw thread end outside, the screw rod is close to nut one end and is the non-thread end, the inboard fixed cavity that sets up of nut, the inboard both ends of cavity are all fixed and are set up the mount pad, the mount pad is inboard through pivot movable mounting latch, the fixed gag lever post that sets. The utility model provides a pair of self-locking bolt can carry out spacing and reach the function of auto-lock between screw thread and the screw rod through inside gear and latch, has guaranteed the security of device when reaching the auto-lock.

Description

Self-locking bolt

Technical Field

The utility model relates to a bolt technical field especially relates to a self-locking bolt.

Background

Bolts, machine parts, cylindrical threaded fasteners with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes.

Because the bolt passes through swing joint between screw thread and the screw hole, the nut, so the bolt accessible reversal back-out, nevertheless because between some specific parts and specific connection place restriction, probably do not need the bolt counter rotation to loosen to need a self-locking bolt to prescribe a limit, current self-locking bolt is all fixed the bolt through adding limited gear in nut department, because the installation of bolt limit tooth outside, so very easily destroyed, thereby influence the auto-lock effect of bolt.

Therefore, it is necessary to provide a self-locking bolt to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a self-locking bolt has solved self-locking bolt and has all fixed the bolt through locating in the nut and inject the gear in addition, because the installation of bolt limit tooth is in the outside, so very easily destroyed to influence the problem of the auto-lock effect of bolt.

In order to solve the technical problems, the utility model provides a self-locking bolt, which comprises a screw rod and a nut, wherein the screw rod is fixedly arranged at one side of the nut, one end of the screw rod, which is far away from the nut, is a threaded end, the outer side of the threaded end is fixedly provided with threads, one end of the screw rod, which is close to the nut, is a non-threaded end, the inner side of the nut is fixedly provided with a cavity, the inner two ends of the cavity are fixedly provided with a mounting seat, the inner side of the mounting seat is movably provided with a latch through a rotating shaft, one end of the latch is fixedly provided with a limiting rod, one end of the latch, which is close to the limiting rod, is connected with the side wall at the inner side of the cavity through a spring, the nut, which is close to one end of the screw rod, is, the gear is meshed with the clamping teeth.

Preferably, the cross section of the threaded end of the screw is in a convex shape.

Preferably, the screw rod is smoothly connected with the side wall of the connecting port.

Preferably, the gear and the latch are both obliquely arranged.

Preferably, the number of the gears is at least four, and the two latches are arranged in a mirror image manner.

Compared with the prior art, the utility model provides a pair of self-locking bolt has following beneficial effect:

the utility model provides a self-locking bolt, because the inner side of the nut is provided with a cavity, the screw rod is movably connected with the cavity through a rotating shaft and a connecting port, the inner side of the cavity is provided with a connecting plate, the outer side of the connecting plate is provided with at least one gear, the inner side of the cavity is movably provided with a latch through two mounting seats and a rotating shaft, the latch is engaged with the gear, therefore, under the action of the latch and the gear, the latch can simultaneously latch the gear to rotate when the nut is rotated, thereby driving the connecting plate and the screw rod to rotate, because the latch and the gear are obliquely arranged, the latch is connected with the inner side of the cavity through the spring, therefore, when the screw cap is reversely rotated, the clamping teeth can fall off from the gear, so that the gear cannot be limited, and then can't reach and carry out rotatory effect to the screw through the nut, and then can't take out the bolt, reach the effect of auto-lock.

Drawings

Fig. 1 is a schematic structural view of a self-locking bolt according to a preferred embodiment of the present invention;

FIG. 2 is a side view of the self-locking bolt of FIG. 1;

fig. 3 is an enlarged schematic view of a portion a of the self-locking bolt shown in fig. 1 in fig. 2.

Reference numbers in the figures: 1. a screw; 11. a threaded end; 12. a thread; 13. a non-threaded end; 2. a nut; 21. a cavity; 22. a mounting seat; 23. a limiting rod; 24. clamping teeth; 25. a connecting port; 26. a connecting plate; 27. a gear; 28. a spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic structural diagram of a self-locking bolt according to a preferred embodiment of the present invention; FIG. 2 is a side view of the self-locking bolt of FIG. 1; fig. 3 is an enlarged schematic view of a portion a of the self-locking bolt shown in fig. 1 in fig. 2. A self-locking bolt comprises a screw rod 1 and a screw cap 2, wherein the screw rod 1 is fixedly arranged on one side of the screw cap 2, one end, away from the screw cap 2, of the screw rod 1 is a threaded end 11, threads 12 are fixedly arranged on the outer side of the threaded end 11, one end, close to the screw cap 2, of the screw rod 1 is a non-threaded end 13, the inner side of the screw cap 2 is fixedly provided with a cavity 21, two ends, inside the cavity 21, of the screw rod are fixedly provided with a mounting seat 22, the inner side of the mounting seat 22 is movably provided with a latch 24 through a rotating shaft, one end of the latch 24 is fixedly provided with a limiting rod 23, one end, close to the limiting rod 23, of the latch 24 is connected with the side wall, inside the cavity 21, through a spring 28, when the latch 24 rotates towards one side far away from the prime number limiting rod 23, the spring 28 is in a stretching state; the screw cap 2 is close to the fixed connector 25 that sets up of 1 one end of screw rod, and 1 pole of screw rod is close to the fixed extension of 2 one end of screw cap to the inboard cavity 21 department of screw rod 1, and screw rod 1 is located the inboard one end of cavity 21 and fixedly sets up connecting plate 26, and the outside of connecting plate 26 is provided with a plurality of gear 27, and gear 27 meshes with latch 24 mutually.

The cross section of the threaded end 11 of the screw rod 1 is convex.

The screw rod 1 is smoothly connected with the side wall of the connecting port 25.

The gear 27 and the latch 24 are both disposed obliquely.

At least four gears 27 are arranged, and two latches 24 are arranged in a mirror image manner.

The utility model provides a pair of self-locking bolt's theory of operation as follows:

when in use, one end of a screw rod 1 of the bolt is aligned with a threaded hole or a nut, the nut 2 is rotated by a wrench, because the cavity 21 is arranged on the inner side of the nut 2, the screw rod 1 is movably connected with the cavity 21 through a rotating shaft and a connecting port 25, the connecting plate 26 is arranged on the inner side of the cavity 21, at least four gears 27 are arranged on the outer side of the connecting plate 26, and the latch 24 is movably arranged on the inner side of the cavity 21 through two mounting seats 22 and the rotating shaft, the latch 24 is meshed with the gears 27, under the action of the latch 24 and the gears 27, the latch 24 can simultaneously latch the gears 27 to rotate when the nut 2 is rotated, so as to drive the connecting plate 26 and the screw rod 1 to rotate, under the action of the thread 12, the screw rod 1 can continuously rotate into the threaded hole and the nut, thereby playing a fastening role, because the latch 24 and the gears 27 are obliquely arranged, the latch 24 is connected with the inner side of the cavity 21 through a spring, therefore, when the nut 2 is reversely rotated, the latch 24 will fall off from the gear 27, so that the gear 27 cannot be limited, the effect of rotating the screw rod 1 through the nut 2 cannot be achieved, and the bolt cannot be taken out, thereby achieving the self-locking effect.

because the cavity 21 is arranged on the inner side of the nut, the screw rod 1 is movably connected with the cavity 21 through the rotating shaft and the connecting port 25, the connecting plate 26 is arranged on the inner side of the cavity 21, at least one gear 27 is arranged on the outer side of the connecting plate 26, the latch 24 is movably arranged on the inner side of the cavity 21 through the two mounting seats 22 and the rotating shaft, and the latch 24 is meshed with the gear 27, under the action of the latch 24 and the gear 27, the nut 2 is rotated, the latch 24 simultaneously latches the gear 27 to rotate, the connecting plate 26 and the screw rod 1 are driven to rotate, because the latch 24 and the gear 27 are obliquely arranged, and the latch 24 is connected with the inner side of the cavity 21 through the spring 28, when the nut 2 is reversely rotated, the latch 24 falls off from the gear 27, the gear 27 cannot be limited, and the effect of rotating the screw rod 1 through the nut 2 cannot be achieved, and then the bolt can not be taken out, thereby achieving the self-locking effect.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a self-locking bolt, includes screw rod (1), nut (2), its characterized in that: the screw rod (1) is fixedly installed on one side of the screw cap (2), one end, far away from the screw cap (2), of the screw rod (1) is a threaded end (11), threads (12) are fixedly arranged on the outer side of the threaded end (11), one end, close to the screw cap (2), of the screw rod (1) is a non-threaded end (13), a cavity (21) is fixedly arranged on the inner side of the screw cap (2), installation seats (22) are fixedly arranged on the two ends of the inner side of the cavity (21), clamping teeth (24) are movably installed on the inner side of the installation seats (22) through rotating shafts, a limiting rod (23) is fixedly arranged on one end of each clamping tooth (24), one end, close to the limiting rod (23), of each clamping tooth (24) is connected with the inner side wall of the cavity (21) through a spring (28), one end, close to one end of the screw cap (1), is fixedly provided with a connecting port (25), one end, close to, the screw rod (1) is located the fixed connecting plate (26) that sets up of cavity (21) inboard one end, the outside of connecting plate (26) is provided with a plurality of gear (27), gear (27) and latch (24) mesh mutually.

2. A self-locking bolt according to claim 1 characterised in that the threaded end (11) of the threaded rod (1) is of convex cross-section.

3. Self-locking bolt according to claim 1, characterised in that the screw (1) is connected smoothly to the side wall of the connection opening (25).

4. A self-locking bolt according to claim 1 characterised in that the gear (27) and the latch (24) are both arranged in an inclined manner.

5. A self-locking bolt according to claim 1 characterised in that there are at least four of said gears (27) and two of said dogs (24) are mirror images.