CN2166277Y

CN2166277Y - Bidirectional self-locking device

Info

Publication number: CN2166277Y
Application number: CN 93223107
Authority: CN
Inventors: 陈国民
Original assignee: State Run No 699 Factory
Current assignee: State Run No 699 Factory
Priority date: 1993-09-02
Filing date: 1993-09-02
Publication date: 1994-05-25
Anticipated expiration: 2003-09-02

Abstract

A self-locking mechanism on mechanical transmission, in particular to a bidirectional self-locking device with an automatically locked output shaft; the utility model comprises an input shaft, a shifting fork, an output shaft, a locking square block, a steel ball or steel column, a fixed sleeve, a bearing and the like; the utility model discloses small, light in weight, simple structure, transmission efficiency are high, do not generate heat, lock safe and reliable, can use with the cooperation of various reduction gears, have expanded the function and the range of application of reduction gear greatly, and the wide application has very big economic benefits and social in automatic control or other mechanical transmission.

Description

Double-directional self-locking device

The utility model relates to the self-locking mechanism on a kind of mechanical transmission, the bidirectional self-locking device that particularly a kind of output shaft is automatically locked.

Existing bidirectional self-locking mechanism roughly has three kinds, i.e. friction plate self-locking, automatically controlled self-locking and friction self-locking, and these several self-locking mechanism complex structures, the self-locking poor reliability, efficient is low; Present existing unidirectional self-lock mechanism can only satisfy the unidirectional self-lock requirement, can not make output two-way locked.

The purpose of this utility model be for provide a kind of simple in structure, volume is little, efficient height, the two-way locked reliable bidirectional self-locking device of output shaft.

The purpose of this utility model realizes by following technological scheme.The utility model is made of input shaft, shift fork, output shaft, locked square, steel ball or steel column, fixed cover, bearing etc., end at input shaft is shaped on shift fork, steel ball or steel column are placed in the pusher dog of shift fork, end at output shaft is shaped on locked square, the integral structure of the integral structure of input shaft and shift fork with output shaft and locked square connected with bearing, and it is placed in the fixed cover, promptly constitute the bidirectional self-locking device.

One end of fixed cover can have an end cap, and end cap is fixed on the fixed cover; Shift fork can be made of annular pusher dog or protruding pusher dog; The annular pusher dog is meant the circular hole that is shaped on non-uniform four or more on the cylinder of an end of input shaft; The projection pusher dog is meant on the end face of an end of input shaft and is shaped on non-uniform four couple or the pawl of the projection more than four pairs; Locked square is to be shaped on four uniform planes on the cylinder of an end of output shaft.

The utility model is a kind of mechanism that is automatically locked, possess that volume is little, in light weight, simple in structure, transmission efficiency is high, do not generate heat, locked characteristics such as safe and reliable, this bidirectional self-locking device and various retarder are used, expanded the function and application scope of these retarders greatly, can be widely used in having very big economic benefit and social benefit in control automatically or other mechanical transmission.

Below in conjunction with drawings and Examples the utility model is described in further detail:

Fig. 1 is the utility model cross-sectional view

Fig. 2 is the structural representation (annular pusher dog type) of the utility model shift fork

Fig. 3 is the structural representation (protruding pusher dog type) of the utility model shift fork

Fig. 4 is the locked box structure schematic representation of the utility model

Referring to figs. 1 through Fig. 4, get input shaft 1, shift fork 9, output shaft 7, locked square 3, steel ball or steel column 4, fixed cover 2, bearing 6, end cap 8, screw 5 ready, end at input shaft is shaped on shift fork 9, steel ball or steel column 4 are placed in the pusher dog of shift fork 9, end at output shaft 7 is shaped on locked square 3, the integral structure of the integral structure of input shaft 1 and shift fork 9 with output shaft 7 and locked square 3 connected with bearing 6, and it is placed in the fixed cover, promptly constitute the bidirectional self-locking device.

End at fixed cover 2 can have an end cap 8, and end cap 8 is screwed on fixed cover 2; Shift fork 9 can be made of annular pusher dog or protruding pusher dog.The annular pusher dog is meant the circular hole that is shaped on non-uniform four or more on the cylinder of an end of input shaft 1, and steel ball or steel column 4 are placed in the circular hole; The projection pusher dog is meant on the end face of an end of input shaft 1 and is shaped on non-uniform four couple or the pawl of the projection more than four pairs.Among the pawl of every pair of projection, be placed with steel ball or steel column 4; Locked square 3 is to be shaped on four uniform planes on the cylinder of an end of output shaft 7.

This bidirectional self-locking device can be widely used in automatic control mechanism, machine tool, materials handling equipment, joint of robot, on the various mechanical transmissions such as automotive electronic control system device.

Claims

1, a kind of bidirectional self-locking device, it is characterized in that described bidirectional self-locking device is by input shaft [1], shift fork [9], output shaft [7], locked square [3], steel ball or steel column [4], fixed cover [2], bearing [6] is formed, end at input shaft [1] is shaped on shift fork [9], steel ball or steel column [4] are placed in the pusher dog of shift fork [9], end at output shaft [7] is shaped on locked square [3], the integral structure of the integral structure of input shaft [1] and shift fork [9] with output shaft [7] and locked square [3] connected with bearing [6], and it is placed in the fixed cover [2], promptly constitute the bidirectional self-locking device.

2, bidirectional self-locking device as claimed in claim 1 is characterized in that an end of described fixed cover ［ 2 ］ can have an end cap ［ 8 ］, and end cap ［ 8 ］ is fixed on the fixed cover ［ 2 ］.

3, bidirectional self-locking device as claimed in claim 1 is characterized in that described shift fork ［ 9 ］ can be made of annular pusher dog or protruding pusher dog, and annular pusher dog is meant and is shaped on non-four or more uniform circular hole on the cylinder of an end of input shaft ［ 1 ］; The projection pusher dog is meant on the end face of an end of input shaft ［ 1 ］ and is shaped on non-uniform four couple or the pawl of the projection more than four pairs.

4, bidirectional self-locking device as claimed in claim 1 is characterized in that described locked square ［ 3 ］ is to be shaped on four uniform planes on the cylinder of an end of output shaft ［ 7 ］.