CN2347262Y

CN2347262Y - Mute timer

Info

Publication number: CN2347262Y
Application number: CN 98211309
Authority: CN
Inventors: 王祖伟
Original assignee: TIANMA TIMING DEVICE FACTORY HANGZHOU CITY
Current assignee: TIANMA TIMING DEVICE FACTORY HANGZHOU CITY
Priority date: 1998-02-06
Filing date: 1998-02-06
Publication date: 1999-11-03
Anticipated expiration: 2008-02-06

Abstract

The utility model relates to the improvement on the structure of the escapement wheel of the washing timing device. The escape teeth are changed into the narrow and long tooth bodies which are uniformly distributed on a tooth seat and are slantwise arranged on the tooth seat. As the tooth body and the tooth seat has a bevel, and the ratio of the length and the width of the tooth body achieves 5, the utility model has the advantages of reasonable structure, handy operation, exact timing, long service life, mechanical operation noise elimination, etc.

Description

Quiet timer

The utility model relates to a kind of mechanical wind-up timer, especially to a kind of structural improvement of timer timing mechanism.

The existing mechanical wind-up timer, the structure that its timing mechanism adopts escape wheel and escapement lever to match more, though that it has is simple in structure, advantage comparatively accurately regularly, but the escapement tooth of traditional escape wheel is tubbiness comparatively all, and profile of tooth is very unreasonable, the bump that exists escape wheel and escapement lever so be in operation is comparatively stiff, the bigger deficiency that waits of bump sound.

The purpose of this utility model is the above-mentioned deficiency at prior art, provide a kind of and can improve the tooth of escape wheel and the action direction of escapement lever impact, increase its elasticity, obviously alleviate the operation sound, and make lighter and handier, the quiet timer more accurately of the operation of this mechanism.

Major scheme of the present utility model is: the escapement dentition of the escape wheel in described timing mechanism is made of toothholder that is distributed in the escape wheel periphery and tilting thin-and-long tooth body on it; The toothholder of described escapement tooth can preferentially adopt to a skew back and put, and α is 40 °-60 ° to its angle (angle between center line and tangent line, down together), and the angle β that is provided with of tilting thin-and-long tooth body on toothholder is 15 °-30 °.

In order further to improve the elasticity of escapement tooth and to consider the facility that its production mould is made, be the arcuation transition between the toothholder of described escapement tooth and link to each other; The facewidth of described thin-and-long tooth body is 1 with the ratio of tooth length: 3-8.The back side parallels with the thin-and-long tooth body of adjacent teeth after the described toothholder.

Because the utility model has adopted the escape wheel of the profile of tooth and the reasonable Arrangement thereof of unique design, make it it in service with cooperating of escapement lever, can original frequent and stiff bump be transformed into the elastic deformation of this tooth body etc. and noise reduction, energy dissipating, thereby have rational in infrastructure, operation is light and handy, regularly accurately, useful life is longer, especially can eliminate the characteristics such as noise of mechanical movement.Can be widely used in mechanical wind-up timer.

Fig. 1 is a kind of partial groups assembling structure schematic diagram of the present utility model.

Fig. 2 is the front view of a kind of escape wheel in the utility model.

Fig. 3 is the A-A cutaway view of Fig. 2.

Below by embodiment, the utility model is described specifically.

Embodiment: the central vertical of escape wheel 2 is provided with wheel shank 21, is provided with gear 22 around wheel shank 21.Periphery at escape wheel 2 is laid with 20 toothholders 201, and the angle α between the tangent line of its center line and wheel is 50 °; Tiltedly be provided with thin-and-long tooth body 202 in the end of toothholder, its facewidth is 1: 6 with the ratio of tooth length, and the angle β that is provided with of tooth body is 25 °.201 of each toothholders are circular-arc transition and connect, and the back back side 203 of toothholder 201 constitutes parallel grooves with 202 of the thin-and-long tooth bodies of adjacent teeth, and the increment face 204 of thin-and-long tooth body and being on the normal at this place of escape wheel (as shown in Figures 2 and 3).Above-mentioned all structures adopt mold integral injection molded.

During assembling, described escape wheel 2 and escapement lever 1 are installed between base 4 and the lid 5 by existing structure.During use, the timer operation is also similar to other timer.The kinetic force that is clockwork spring 3 drives great wheel, and the latter takes turns through two and acts on the three-wheel, and an end coaxial at three-wheel is provided with cam at times; Three-wheel acts on the escape wheel 2 again through the transmission of four-wheel, and the quick transmission of escape wheel 2 relies on the escapement lever 1 of being located at its side, controls its transmission speed by technique known, thereby makes above-mentioned timing mechanism be able to steadily move leggiero.

Claims

1, a kind of quiet timer, include timing mechanism, period controlling organization, gear shift control mechanism and housing, the escapement tooth (20) that it is characterized in that the escape wheel (2) in the described timing mechanism is made of toothholder (201) that is distributed in escape wheel (2) periphery and tilting thin-and-long tooth body (202) on it.

2, quiet timer as claimed in claim 1 is characterized in that the toothholder (201) of described escapement tooth (20) is put to a skew back, and its angle α is that the angle β that is provided with of 40 °-60 ° and tilting thin-and-long tooth body (202) on present is 15 °-30 °.

3, quiet timer as claimed in claim 1 or 2 is characterized in that being between the toothholder (201) of described escapement tooth (20) the arcuation transition and links to each other; The facewidth of described thin-and-long tooth body (202) is 1 with the ratio of tooth length: 3-8.

4, quiet timer as claimed in claim 1 or 2, the toothholder (201) that the it is characterized in that described escapement tooth back side (203) afterwards parallels with the thin-and-long tooth body (202) of adjacent teeth.

5, quiet timer as claimed in claim 3, the toothholder (201) that the it is characterized in that described escapement tooth back side (203) afterwards parallels with the thin-and-long tooth body (202) of adjacent teeth.