CN220769900U

CN220769900U - Locking U-shaped bolt for leaf spring

Info

Publication number: CN220769900U
Application number: CN202322181628.3U
Authority: CN
Inventors: 吴家熔; 汤国放
Original assignee: Fujian Delain Auto Parts Co ltd
Current assignee: Fujian Delain Auto Parts Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-04-12
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses an anti-loosening U-shaped bolt for a plate spring, which comprises a U-shaped screw, wherein first external threads are formed on the peripheral side surfaces of the bottoms of two ends of the U-shaped screw; the device is reasonable in structure, high in practicality, safe and reliable, adopts the cooperation structure of first fastening nut, second fastening nut and iron wire, realizes locking each other between the nuts, reaches mutual locking effect, and it is big to produce automobile vibration when using to effectively solve U-shaped bolt, makes bolt nut not hard up, leads to axle steel plate spring to play the problem of cushioning effect.

Description

Locking U-shaped bolt for leaf spring

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to an anti-loosening U-shaped bolt for a plate spring.

Background

The connecting axle U-shaped bolt is used for fixedly connecting the leaf spring and the connecting axle; the leaf spring is fixed on the axle, plays the absorbing effect, however the car is jolting in driving the in-process frequently shakes, if connect axle U-shaped bolt and take place not hard up, can lead to leaf spring unable absorbing effect, consequently connect the locking requirement of axle U-shaped bolt very strict, and current prior art's U-shaped bolt only relies on ordinary bolt to prevent looseness, and the security performance can't satisfy the work demand.

Disclosure of Invention

The utility model aims to provide an anti-loosening U-shaped bolt for a plate spring, which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the anti-loosening U-shaped bolt for the plate spring comprises a U-shaped screw, wherein first external threads are formed on the peripheral side surfaces of the bottoms of the two ends of the U-shaped screw; the first external thread is connected with a first fastening nut in a threaded manner, the bottom surfaces of two ends of the U-shaped screw are fixedly connected with extension rods, second external threads are formed in the peripheral side surfaces of the extension rods, the second external threads are connected with second fastening nuts in a threaded manner, and the screwing direction of the threads of the first external threads is opposite to that of the threads of the second external threads.

Further, both ends all are provided with the go-between around the first fastening nut and the both ends around the second fastening nut, can wear to be equipped with the iron wire between the go-between on the first fastening nut and the go-between of the same one side on the second fastening nut, the both ends of iron wire twist together each other.

Further, the diameter size of the extension rod is smaller than that of the U-shaped screw rod, a fixing plate is movably connected between the extension rods on two sides, the second fastening nut is located below the fixing plate and pushes the fixing plate upwards to enable the fixing plate to be in butt joint with the bottom end of the U-shaped screw rod, a plurality of springs are connected to the top surface of the fixing plate, and a pressing plate is connected to the other end of each spring.

Further, a rubber pad is arranged on the top surface of the pressing plate.

Further, the U-shaped screw rod and the extension rod are of a cast integrated structure.

Compared with the prior art, the utility model has the beneficial effects that:

the device is reasonable in structure, high in practicability, safe and reliable, the mutual locking between the nuts is achieved by adopting the cooperative structure of the first fastening nut, the second fastening nut and the iron wires, the mutual anti-loosening effect is achieved, the problem that the U-shaped bolt is large in vibration of an automobile when being used, the screw nut is loosened, and the axle leaf spring cannot play a damping role is effectively solved.

Drawings

FIG. 1 is a front view of a locking U-bolt for a leaf spring of the present utility model;

FIG. 2 is a front view of a screw of a locking U-bolt for a leaf spring according to the present utility model;

fig. 3 is a side view of a locking U-bolt for a leaf spring according to the present utility model.

In the figure, a U-shaped screw rod-1, a first external thread-2, a first fastening nut-3, an extension rod-4, a second external thread-5, a second fastening nut-6, a connecting ring-7, an iron wire-8, a fixing plate-9, a spring-10, a pressing plate-11 and a rubber pad-12.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, an anti-loosening U-shaped bolt for a plate spring comprises a U-shaped screw 1, wherein first external threads 2 are respectively formed on the peripheral side surfaces of the bottoms of two ends of the U-shaped screw 1; the first external thread 2 is connected with a first fastening nut 3 in a threaded manner, the bottom surfaces of two ends of the U-shaped screw 1 are fixedly connected with an extension rod 4,U-shaped screw 1 and the extension rod 4 which are of a cast integrated structure, the peripheral side surface of the extension rod 4 is provided with a second external thread 5, the second external thread 5 is connected with a second fastening nut 6 in a threaded manner, and the screwing direction of the threads of the first external thread 2 is opposite to that of the second external thread 5.

As shown in fig. 3, the front and rear ends of the first fastening nut 3 and the front and rear ends of the second fastening nut 6 are respectively provided with a connecting ring 7, an iron wire 8 can be arranged between the connecting ring 7 on the first fastening nut 3 and the connecting ring 7 on the same side of the second fastening nut 6 in a penetrating way, and the two ends of the iron wire 8 are mutually twisted together.

As shown in fig. 1, the diameter of the extension rod 4 is smaller than that of the U-shaped screw 1, a fixing plate 9 is movably connected between the extension rods 4 at two sides, a second fastening nut 6 is located below the fixing plate 9 and pushes up the fixing plate 9 to enable the fixing plate to be abutted to the bottom end of the U-shaped screw 1, a plurality of springs 10 are connected to the top surface of the fixing plate 9, a pressing plate 11 is connected to the other end of each spring 10, and a rubber pad 12 is arranged on the top surface of each pressing plate 11.

The working principle of this embodiment is as follows:

when the automobile axle is used, the U-shaped screw 1 is used for fixing the plate spring on the axle, after two ends of the U-shaped screw 1 respectively penetrate through the fixing holes on the axle, the first fastening nut 3 is screwed in to realize the installation of the U-shaped screw 1 relative to the axle, then the fixing plate 9 is arranged on the extension rod 4, the pressing plate 11 on the extension rod is abutted against the end face of the axle, the second fastening nut 6 is screwed in, the influence of vibration generated by the axle in the running process of the automobile on the second fastening nut 6 can be relieved through the action of the spring 10, and the plate spring and the axle can be further guaranteed to be always attached, and gaps cannot be formed due to the vibration; finally, an iron wire 8 is screwed between the first fastening nut 3 and the second fastening nut 6, and because the thread directions of the first fastening nut 3 and the second fastening nut 6 are opposite, when one fastening nut rotates to a loosening direction due to vibration, the other fastening nut is driven to rotate to the screwing direction under the linkage of the iron wire 8, so that the two fastening nuts are mutually restricted, and the mutual locking function is achieved.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a locking U-shaped bolt that moves for leaf spring which characterized in that: the screw comprises a U-shaped screw, wherein first external threads are formed on the peripheral side surfaces of the bottoms of the two ends of the U-shaped screw; the first external threads are connected with first fastening nuts in a threaded manner, the bottom surfaces of the two ends of the U-shaped screw are fixedly connected with extension rods, second external threads are formed in the peripheral side surfaces of the extension rods, second fastening nuts are connected with the second external threads in a threaded manner, and the screw threads of the first external threads are opposite to the screw threads of the second external threads in the screw direction; the connecting rings are arranged at the front end and the rear end of the first fastening nut and the front end and the rear end of the second fastening nut, an iron wire can be arranged between the connecting ring on the first fastening nut and the connecting ring on the same side of the second fastening nut in a penetrating way, and the two ends of the iron wire are mutually twisted together.

2. The anti-loosening U-bolt for a leaf spring as set forth in claim 1, wherein: the diameter size of the extension rod is smaller than that of the U-shaped screw rod, a fixing plate is movably connected between the extension rods on two sides, the second fastening nut is located below the fixing plate and pushes up the fixing plate to enable the fixing plate to be in butt joint with the bottom end of the U-shaped screw rod, a plurality of springs are connected to the top surface of the fixing plate, and a pressing plate is connected to the other end of each spring.

3. The anti-loosening U-bolt for a leaf spring as set forth in claim 2, wherein: the top surface of clamp plate is provided with the rubber pad.

4. The anti-loosening U-bolt for a leaf spring as set forth in claim 1, wherein: the U-shaped screw rod and the extension rod are of a cast integrated structure.