CN2137739Y

CN2137739Y - Pawl-rocking type click

Info

Publication number: CN2137739Y
Application number: CN 91228844
Authority: CN
Inventors: 欧阳维超; 常喜元
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-16
Filing date: 1991-11-16
Publication date: 1993-07-07
Anticipated expiration: 2001-11-16

Abstract

The utility model relates to a pawl-rocking type notch wheel mechanism, which comprises a notch wheel, a pawl, a driving lever, a central shaft and a pawl shaft. At least two pawls are arranged on every piece of pawl shaft, and the front end of the pawl is disposed on the notch wheel in overlapping. The width of the back end of the pawl is smaller than the front end, and the pawls are sheathed on the pawl shaft side by side, so the contact face of the pawl and the ratchet is increased, the movement loss and the contact stress are reduced, and the abrasive resistance and the transmission accuracy are enhanced. The utility model can be used for the notch wheel mechanism which is step or stepless.

Description

Pawl-rocking type click

The utility model relates to a kind of ratchet swing type ratchet mechanism, especially a kind of ratchet swing type ratchet mechanism that is applicable in the loom let off motion.

Existing ratchet swing type ratchet mechanism, its composition comprises ratchet, ratchet, driving lever, central shaft and pawl axis, ratchet on its pawl axis is single, transmission accuracy is low, the traverse loss is big, in loom let off motion, use, often cause the unequal adverse consequences of warp tension, for reducing the traverse loss and improving transmission accuracy, people adopt the way that is arranged in juxtaposition several ratchets on the width direction of ratchet, but the surface of contact when this way makes the ratchet driving pawl reduces greatly, thereby contact stress is increased, and wearing and tearing are accelerated.

The purpose of this utility model provides that the loss of a kind of traverse is little, transmission accuracy is high, and the ratchet swing type ratchet mechanism that contact stress is little, wear resistance is good simultaneously especially is applicable to the ratchet swing type ratchet mechanism in the loom let off motion.

Ratchet swing type ratchet mechanism of the present utility model, comprise ratchet, driving lever, central shaft and pawl axis, its improvements are: every pawl axis is provided with at least two ratchets, and ratchet front end arranged superposed on ratchet, and ratchet rear end width is less than front end and be placed on the pawl axis side by side.

The number of detents that is provided with on every pawl axis of the utility model is 2～8, but Cui is 3～5.

The said ratchet of the utility model preferably drops on respectively on the different ratchets, and ratchet pawl distance is greater than the ratchet tooth distance.

Ratchet of the present utility model is not advisable not take place mutually to disturb at the height of overlapping.

Compared with prior art, the utility model is owing to the method that has adopted many ratchets overlapping to arrange, thereby the increase of the surface of contact of ratchet and ratchet, and the traverse loss reduces with contact stress, and wear resistance and transmission accuracy improve greatly.The utility model is for having level and stepless ratchet mechanism to be suitable for.

Below in conjunction with accompanying drawing the utility model and embodiment are described in detail:

Fig. 1 is an embodiment's of the utility model a structural representation.

Fig. 2 is the plan view of the utility model ratchet.

Fig. 3 is the plan view of the utility model ratchet.

With reference to Fig. 1, pawl-rocking type click of the present utility model, comprise ratchet (1), driving lever (2), central shaft (3) and pawl axis (7), be provided with at least two ratchets (4,5,6) at every pawl axis, and front end is arranged superposed on ratchet, at the height of overlapping, be not advisable not take place mutually to disturb; Ratchet rear end width is less than front end and be placed in side by side (Fig. 2, Fig. 3) on the pawl axis, and the number of detents that arranges on every pawl axis is 2～8, but optimum value is 3～5; For improving transmission accuracy, ratchet drops on respectively on the different ratchets, and ratchet pawl distance is greater than the ratchet tooth distance.

Embodiment:

With reference to Fig. 1, form by ratchet (1), driving lever (2), central shaft (3) and pawl axis (7), two pawl axis are being arranged on the driving lever, be fixed on the driving lever by screw (8), every pawl axis is provided with three ratchets (4,5,6), ratchet front end arranged superposed on ratchet, the rear end is placed on the pawl axis side by side, and each ratchet drops on respectively on the different ratchets, and pawl is apart from bigger by 1/3rd than tooth pitch.

Claims

1, a kind of ratchet swing type ratchet mechanism, comprise ratchet, driving lever, central shaft and pawl axis, it is characterized by: every pawl axis is provided with at least two ratchets, and ratchet front end arranged superposed on ratchet, and ratchet rear end width is less than front end and be placed on the pawl axis side by side.

2, ratchet swing type ratchet mechanism as claimed in claim 1 is characterized in that the number of detents that is provided with on the every pawl axis is 2～8.

3, ratchet swing type ratchet mechanism as claimed in claim 1 or 2 is characterized in that said ratchet drops on respectively on the different ratchets, and ratchet pawl distance is greater than the ratchet tooth distance.