CN2432638Y

CN2432638Y - Rotary counter mechanism

Info

Publication number: CN2432638Y
Application number: CN 00218345
Authority: CN
Inventors: 陈志贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-07
Filing date: 2000-07-07
Publication date: 2001-05-30
Anticipated expiration: 2010-07-07

Abstract

The utility model relates to a rotary counter mechanism, which comprises a shell, wherein, a drive shaft, a positive rotary shaft, a negative rotary shaft, and a counting wheel shaft are arranged on the shell; gears are respectively arranged on the positive rotary shaft and negative rotary shaft, and are engaged with a counting gear on the counting wheel shaft; rotary discs of the positive rotary shaft and negative rotary shaft are sheathed on the positive rotary shaft and negative rotary shaft; the rotary directions of the rotary discs of the positive rotary shaft and negative rotary shaft are opposite; ratchets are hinged on the rotary discs; ratchet wheels are fixed on corresponding shafts to match with the ratchets. No matter the drive wheel rotates positively or negatively, the counting wheel both does positive rotation. If applied to an electric energy meter, the utility model can effectively protect users from electric larceny by unfair means to enable the dial of the electric energy meter to negatively rotate.

Description

A kind of rotation counter mechanism

The utility model relates to a kind of rotation counter mechanism.

Existing rotation counting mechanism is simple in structure, is mostly to rotate also transmission by gear set of driving gear drive to give counter wheel, and when driving gear just changeed, its counter wheel also just changeed, and when driving gear reversed, its counter wheel also reversed.This rotation counting mechanism is some occasion (thereby electricity filching person is that the purpose that reaches stealing makes its driving gear that rotates counting mechanism counter-rotating with the electric energy meter reversal connection in as electric energy meter, counter wheel is counter-rotating thereupon also), and is obviously too simple and inapplicable because of structure.

The purpose of this utility model is to overcome the above-mentioned defective of prior art, and a kind of rotation counting mechanism that still can just change when driving gear counter-rotating counter wheel is provided.

The utility model comprises housing, on housing, be provided with main drive shaft, positive rotating shaft, reversing shaft and counting wheel shaft, main drive shaft is provided with driving gear, the counting wheel shaft is provided with several counter wheels, in the end a counter wheel is provided with counting gear, in positive rotating shaft, be provided with positive shaft gear, on reversing shaft, be provided with the reversing shaft gear, positive shaft gear and reversing shaft gear mesh with counting gear respectively, in positive rotating shaft, be arranged with positive rotating shaft rotating disk simultaneously, on reversing shaft, be arranged with the reversing shaft rotating disk, on positive rotating shaft rotating disk and counter-rotating reel, be respectively equipped with transmission gear, on main drive shaft, also be provided with transmission gear, each transmission gear is meshing with each other and makes under the drive of main drive shaft the switched in opposite of positive rotating shaft rotating disk and reversing shaft rotating disk, on positive rotating shaft rotating disk, be hinged with ratchet, in positive rotating shaft, be installed with ratchet and click-fit simultaneously, on the reversing shaft rotating disk, be hinged with ratchet, on reversing shaft, be installed with simultaneously ratchet and click-fit, ratchet in the positive rotating shaft, ratchet on the direction of ratchet interlock and the reversing shaft, the direction of ratchet interlock is identical.

The revolution counter mechanism that adopts above-mentioned concrete structure is when just changeing under the drive of driving wheel in external force of main drive shaft, driving positive rotating shaft rotating disk by transmission gear just changes, make the counter-rotating of reversing shaft rotating disk simultaneously, ratchet in positive rotating shaft this moment and the ratchet interlock on the positive rotating shaft rotating disk, positive rotating shaft rotating disk will drive positive rotating shaft just to be changeed, and the ratchet on ratchet on the reversing shaft and the reversing shaft rotating disk is thrown off, the reversing shaft rotating disk slides on reversing shaft relatively, at this moment driving wheel is to drive counter wheel by the positive shaft gear in the positive rotating shaft just to change, when reversing under the drive of driving wheel in external force of main drive shaft, positive rotating shaft rotating disk counter-rotating, the reversing shaft rotating disk just changes, ratchet in positive rotating shaft this moment is thrown off with the ratchet on the positive rotating shaft rotating disk, positive rotating shaft rotating disk slides in positive rotating shaft relatively, and the ratchet interlock on ratchet on the reversing shaft and the reversing shaft rotating disk, the reversing shaft rotating disk will drive reversing shaft just to be changeed, and at this moment driving wheel is just to take turns by the reversing shaft gear driven counter wheel on the reversing shaft.

By the above-mentioned course of work as can be seen, no matter driving wheel is just changeing still counter-rotating, the counter wheel of rotation counting mechanism described in the utility model all will be done the rotation of forward.As being applied to, the utility model can prevent effectively in the electric energy meter that the user from making electric energy meter rotating disk counter-rotating carrying out stealing with improper means, simultaneously by changing the ratio of gear of gear, ratio of gear when the ratio of gear when making the driving wheel counter-rotating between driving wheel and the counter wheel is just changeing greater than active between driving wheel and the counter wheel can also be punished the electricity filching person of malice.

Further illustrate particular content of the present utility model below in conjunction with drawings and Examples.

Fig. 1: the existing structural representation that rotates counting mechanism;

Fig. 2: the structural representation of present embodiment;

The A-A view of Fig. 3: Fig. 2;

The B-B view of Fig. 4: Fig. 2.

As shown in the figure, present embodiment comprises housing 1, on housing 1, be provided with main drive shaft 2, positive rotating shaft 3, reversing shaft 4 and counting wheel shaft 5, main drive shaft 2 is provided with driving gear 21, counting wheel shaft 5 is provided with five counter wheels 51,52,53,54,55, in the end a counter wheel 55 is provided with counting gear 56, in positive rotating shaft 3, be provided with positive shaft gear 31, on reversing shaft 4, be provided with reversing shaft gear 41, positive shaft gear 31 meshes with counting gear 56 respectively with reversing shaft gear 41, in positive rotating shaft 3, be arranged with positive rotating shaft rotating disk 32 simultaneously, on reversing shaft 4, be arranged with reversing shaft rotating disk 42, on positive rotating shaft rotating disk 32, be provided with two transmission gears 33,34 are provided with a transmission gear 43 on counter-rotating reel 42, on main drive shaft 2, also be provided with transmission gear 23, transmission gear 23 and transmission gear 33 are meshing with each other, transmission gear 34 and transmission gear 43 are meshing with each other, like this under the drive of main drive shaft 2 positive rotating shaft rotating disk 32 and reversing shaft rotating disk 42 turn to just opposite, on positive rotating shaft rotating disk 32, be hinged with ratchet 35, being installed with ratchet 36 simultaneously in positive rotating shaft 3 cooperates with ratchet 35, on reversing shaft rotating disk 42, be hinged with ratchet 45, simultaneously on reversing shaft 4, be installed with ratchet 46 and cooperate, the ratchet 36 in the positive rotating shaft 3 with ratchet 45, the direction of ratchet 35 interlocks and the ratchet on the reversing shaft 46, the direction of ratchet 45 interlocks is identical.

Claims

1, a kind of rotation counter mechanism, comprise housing, on housing, be provided with main drive shaft and counting wheel shaft, main drive shaft is provided with driving gear, the counting wheel shaft is provided with several counter wheels, in the end a counter wheel is provided with counting gear, it is characterized in that: on housing, also be provided with positive rotating shaft and reversing shaft, in positive rotating shaft, be provided with positive shaft gear, on reversing shaft, be provided with the reversing shaft gear, positive shaft gear and reversing shaft gear mesh with counting gear respectively, in positive rotating shaft, be arranged with positive rotating shaft rotating disk simultaneously, on reversing shaft, be arranged with the reversing shaft rotating disk, on positive rotating shaft rotating disk and counter-rotating reel, be respectively equipped with transmission gear, on main drive shaft, also be provided with transmission gear, each transmission gear is meshing with each other and makes under the drive of main drive shaft the switched in opposite of positive rotating shaft rotating disk and reversing shaft rotating disk, on positive rotating shaft rotating disk, be hinged with ratchet, in positive rotating shaft, be installed with ratchet and click-fit simultaneously, on the reversing shaft rotating disk, be hinged with ratchet, on reversing shaft, be installed with simultaneously ratchet and click-fit, ratchet in the positive rotating shaft, ratchet on the direction of ratchet interlock and the reversing shaft, the direction of ratchet interlock is identical.