CN210484322U

CN210484322U - Fastening shaft pin convenient to disassemble and assemble and preventing loosening

Info

Publication number: CN210484322U
Application number: CN201921422699.5U
Authority: CN
Inventors: 马斯沫; 张连生; 姜方迪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-08
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to a make things convenient for anti-loosening fastening pivot of dismouting, its characterized in that: the pin base is cylindrical, the lowest part of the pin base is a pin head, the upper cylinder of the pin head is hollow and is provided with threads, and the bottom of the cylindrical hollow is provided with two symmetrical limiting holes; the pin cap is a round column, the top of the pin cap is provided with a pin head, the outside of the pin cap of the round column is provided with a thread, the thread of the pin base is meshed with the thread of the pin cap, the middle of the round column of the pin cap is provided with a rectangular pin tongue groove, and an elastic pin tongue is arranged in the pin tongue groove; the key is forked. The anti-loosening device is simple in structure and convenient to use, and can prevent loosening and falling off.

Description

Fastening shaft pin convenient to disassemble and assemble and preventing loosening

Technical Field

The utility model relates to a make things convenient for anti-loosening fastening pivot of dismouting for the rotation axis fastens.

Background

The existing connection of rotating shafts mainly fixes the shaft end and can only be used once, and when the shaft is worn and needs to be replaced, other parts can only be replaced together, such as chain connection of widely used bicycles, motorcycles and the like; a hinge shaft; an automobile door spindle; the fastening of the rotating shaft at the rotating shaft pin of various cranes cannot be maintained after being fixed once, and only can be removed and replaced destructively, so that the potential safety hazard to surrounding parts exists.

Disclosure of Invention

An object of the utility model is to provide a make things convenient for anti-loosening fastening pivot of dismouting, its easy dismounting can not cause destruction to the counter shaft connecting piece during the dismouting, simple structure, and convenient to use prevents not hard up and drops.

The technical scheme of the utility model is realized like this: a fastening shaft pin convenient to disassemble and assemble and preventing loosening is composed of a pin base, a pin cap, an elastic pin tongue, a key, a limiting hole, base threads, pin cap threads and a pin tongue groove; the method is characterized in that: the pin base is cylindrical, the lowest part of the pin base is a pin head, the upper cylinder of the pin head is hollow and is provided with threads, and the bottom of the cylindrical hollow is provided with two symmetrical limiting holes; the pin cap is a round column, the top of the pin cap is provided with a pin head, the outside of the pin cap of the round column is provided with a thread, the thread of the pin base is meshed with the thread of the pin cap, the middle of the round column of the pin cap is provided with a rectangular pin tongue groove, and an elastic pin tongue is arranged in the pin tongue groove; the key is forked.

The key is inserted into the pin tongue groove on the pin cap and is matched with the elastic pin tongue.

The utility model has the advantages of simple structure, convenient use, and prevention of loosening and falling.

Drawings

Fig. 1 is a schematic view of the instant when the key is inserted and opened according to the present invention.

Fig. 2 is a usage state diagram of the present invention.

Fig. 3 is a schematic view of the pin base of the present invention.

Fig. 4 is a schematic view of the pin cap and spring tongue combination of the present invention.

Fig. 5 is a schematic view of the key of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings: as shown in fig. 1-5, a fastening shaft pin convenient to disassemble and assemble and preventing loosening comprises a pin base 1, a pin cap 2, an elastic pin tongue 3, a key 4, a limiting hole 5, a base thread 6, a pin cap thread 7 and a pin tongue groove 8; the method is characterized in that: the pin base 1 is cylindrical, the lowest part of the pin base is a pin head, the upper cylinder of the pin head is hollow and is provided with threads 6, and the bottom of the cylindrical hollow is provided with two symmetrical limiting holes 5; the pin cap 2 is a round column, the top of the pin cap is provided with a pin head, the outside of the pin cap of the round column is provided with a thread 7, a pin base thread 6 is meshed with the pin cap thread 7, the middle of the round column of the pin cap is provided with a rectangular pin tongue groove 8, and an elastic pin tongue 3 is arranged in the pin tongue groove; the key 4 is fork-shaped.

The key 4 is inserted into the pin tongue groove 8 on the pin cap 2 to be matched with the elastic pin tongue 3.

As shown in figure 2, when the bicycle chain is used, if the bicycle chain is connected as required, namely, the middle holes of two parts to be connected are aligned, the pin base 1 is inserted, the pin cap thread 7 is aligned with the pin base thread 6, the key 4 is inserted into the pin tongue groove 8 on the pin cap 2, the elastic pin tongue 3 is compressed to be thin and completely retracted into the pin tongue groove 8, the pin cap 2 can be rotated to enter the pin base 1 at the moment, the key 4 is not completely withdrawn when the bottom is reached, namely, the elastic pin tongue 3 is opened, the end of the pin tongue 3 possibly does not completely enter the limiting hole 5 at the moment, the key needs to be rotated again, and when the elastic pin tongue 3 completely enters the limiting hole 5, the locking state is obtained. How to determine whether to enter the locked state is to rotate the key 4 without inserting it to the bottom, and if the key can be rotated, it means that the locked state is not entered, and if the key cannot be rotated, it means that the locked state is entered. After locking, the key 4 is withdrawn. The shaft pin can not loosen or fall off, the thread is fastened, and the elastic bolt 3 is a limit for preventing the rotation from disengaging.

When the shaft pin needs to be replaced, the key 4 is inserted into the bolt tongue groove 8, the elastic bolt tongue 3 is separated from the limiting hole 5 by pressing the key 4 to the bottom, the clamping state is changed, and then the pin cap 2 can be taken out from the pin base 1 in a rotating mode by rotating the key 4, so that the pin can be replaced conveniently.

Claims

1. The anti-loosening fastening shaft pin convenient to disassemble and assemble consists of a pin base, a pin cap, an elastic pin tongue, a key, a limiting hole, base threads, pin cap threads and a pin tongue groove; the method is characterized in that: the pin base is cylindrical, the lowest part of the pin base is a pin head, the upper cylinder of the pin head is hollow and is provided with threads, and the bottom of the cylindrical hollow is provided with two symmetrical limiting holes; the pin cap is a round column, the top of the pin cap is provided with a pin head, the outside of the pin cap of the round column is provided with a thread, the thread of the pin base is meshed with the thread of the pin cap, the middle of the round column of the pin cap is provided with a rectangular pin tongue groove, and an elastic pin tongue is arranged in the pin tongue groove; the key is forked.

2. The easy-to-mount/dismount anti-loosening fastening shaft pin according to claim 1, wherein the key is inserted into the tongue groove of the pin cap to engage with the resilient tongue.