CN2221793Y

CN2221793Y - Overrunning clutch reversing wheel for automatic watch

Info

Publication number: CN2221793Y
Application number: CN 95209702
Authority: CN
Inventors: 陈照京
Original assignee: MINGZHU WATCH INDUSTRY Co Ltd GUANGZHOU
Current assignee: MINGZHU WATCH INDUSTRY Co Ltd GUANGZHOU
Priority date: 1995-04-17
Filing date: 1995-04-17
Publication date: 1996-03-06
Anticipated expiration: 2005-04-17

Abstract

The utility model provides an overrunning clutch reversing wheel for an automatic watch. The utility model is characterized in that the middle part of the outer ring of the reversing wheel is blanked into a plum blossom shape slot. Because the radial clearance of a roller along the circumference direction in the slot is variable, which causes the roller to be pressed with an inner ring tightly to rotate or roll along the surface of the inner ring. Therefore, the requirement that the power is input to a spring or the moving force is transferred in one way can be realized. The utility model has the advantages of big shock resistant ability, simple part structure, and easy assembly.

Description

Automatic watch super-clutch type reverse wheel

A kind of automatic watch super-clutch type reverse wheel relates to the improvement of automatic watch reverse mechanism.

The reverse wheel of existing automatic watch, the general pawl ratchet formula reverse wheel that adopts, pawl ratchet is sharp tooth, its pointed tooth weares and teares easily, fractures and wears no resistance, intensity is low, processing and manufacturing is difficult, cause the phenomenon that bar is malfunctioning on the automatic watch, pawl-and-gearing interferes with each other, directly influence the work effect of reverse wheel.

The purpose of this utility model is to provide a kind of improved automatic watch overdrive clutch formula reverse wheel, it has not only solved the problem that pawl ratchet formula reverse wheel exists, and the performance and the serviceable life of having improved the automatic watch reverse mechanism, have higher impact resistance, simple in structure, be easy to the assembling.

The utility model is to implement like this: tooth axle 2 is through the center of wheel component 1, change wheel slice 3, interior ring 5, cover plate 6, and interior ring 4 and outer shroud 7 are loaded between cover plate 6 and the change wheel slice 3.When 7 rotations of nail drive outer shroud dialled in the solid word on the wheel component 1, the roller 4 in outer shroud 7 grooves was followed outer shroud 7 and is rolled along about the surface of interior ring 5, thereby ensures to the requirement of clockwork spring input power or single aspect transferring power.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is axial structure figure of the present utility model;

Fig. 2 is that the D-D of Fig. 1 is to cut-away view.

Shown in accompanying drawing 1,2, this reverse wheel is loaded between cover plate 6 and the change wheel slice 3, and reverse wheel is made up of tooth axle 2, roller 4, interior ring 5, outer shroud 7.Ring 5 is anchored on the tooth axle 2 in ganoid, and the middle body of outer shroud 7 is cut into plum blossom shape slotted eye, and ring 5 rotated or rolling on interior ring 5 in round roller 4 pressed in smooth slotted eye.Roller 4 along the circumferential direction radial play in the slotted eye of outer shroud 7 changes, and reduce from left to right gradually with negative value most in its gap.

When dialling nail and stir outer shroud 7 and rotate counterclockwise on the wheel component 1, roller 4 is compressed in the right-hand of slotted eye, this moment, the gap was a negative value, outer shroud 7, roller 4, interior ring 5 are pressed on together, interior ring 5 rotates with outer shroud 7 with tooth axle 2, forms self-locking state, thereby makes tooth axle 2 promote forwinding wheel sheets 8, to clockwork spring input power, and keep the wrist-watch motion.

When dialling nail and stir outer shroud 7 and clockwise rotate on the wheel component 1, roller 4 is in the left side of slotted eye, and has radial play, roller 4 can only roll on interior ring 5, ring 5 and tooth axle 2 rotate in can not driving, and the also unpowered forwinding wheel sheet 8 of exporting to is just realized the requirement of unidirectional delivery motoricity this moment.

The utility model is a kind of overdrive clutch formula reverse wheel that is applied to automatic watch, because stressed in the reverse wheel is the cylinder contact of smooth garden, so stress equilibrium, reduced parts wearing and tearing at the volley, improved last bar speed, and reliable operation.

Claims

1, a kind of automatic watch super-clutch type reverse wheel, this reverse wheel is loaded between change wheel slice (3) and the cover plate (6), reverse wheel is made up of tooth axle (2), interior ring (5), roller (4), outer shroud (7), it is characterized in that: ring (5) is anchored on the tooth axle (2) in ganoid, the middle body of outer shroud (7) is punched into plum blossom shape slotted eye, and round roller (4) presses interior ring (5) rotation or goes up rolling at interior ring (5) in smooth slotted eye.

2, automatic watch super-clutch type reverse wheel according to claim 1 is characterized in that roller (4) radial play along circumferencial direction in the slotted eye of outer shroud (7) changes, and reduce from left to right gradually with negative value most in its gap.