CN102242485A

CN102242485A - Pawl device of decelerating clutch of washing machine

Info

Publication number: CN102242485A
Application number: CN2010101834731A
Authority: CN
Inventors: 刘军; 薛华林; 江平国
Original assignee: NINGGUO JULONG INDUSTRY Co Ltd
Current assignee: Anhui Julong Transmission Technology Co Ltd
Priority date: 2010-05-16
Filing date: 2010-05-16
Publication date: 2011-11-16
Anticipated expiration: 2030-05-16
Also published as: CN102242485B

Abstract

The invention provides a pawl device of a decelerating clutch of a washing machine, relates to the technical field of washing machines, and in particular relates to a decelerating clutch of an impeller type washing machine. The pawl device mainly comprises a bearing retainer, a fixed shaft, a support, a bottom ratchet wheel, a clutch torsion spring, a clutch shaft sleeve, a clutch shaft, a top ratchet wheel and pawls, wherein, the pawls consist of a pair of main-auxiliary pawls; the arm length from pawl ends of the main pawl and the auxiliary pawl to a rotation center is equal and symmetrical; the two pawls are synchronously opened and closed just like pinchers; the pawl ends can be respectively inserted into or deviated from the bottom ratchet wheel and the top ratchet wheel at the same time; and the main pawl takes the fixed shaft as a rotation support center, and the auxiliary pawl takes the fixed shaft or a small shaft fixed on the support as a rotation support center. The pawl device has the beneficial effects that relative rotating angles of the top ratchet wheel and the bottom ratchet wheel can be changed through the main pawl and the auxiliary pawl so as to control the clutch torsion spring in the ratchet wheels to loose or clasp the clutch shaft sleeve and the clutch shaft, which realizes synchronous clutch, meets the requirements for equal insertion depth and consistent opening clearance, and achieves good, stable and reliable clutch effect without abnormal sound.

Description

A kind of decelerating clutch of washing machine pawl device

Technical field

The present invention relates to the washing machine technical field, particularly the decelerating clutch of washing machine pawl device.

Background technology

Existing automatic reduction clutch of washing machine generally all adopts two pawl devices, as shown in Figure 1, be conventional whole two pawl component work schematic diagrames, by two the ratchet A and the B that are contained on the same whole ratchet holder, in order to insert or to leave upper and lower two

ratchets

9,5, change its relative rotation and control the clutch of clutch torsion spring 6 in the ratchet, play the translation function of washing and dehydration procedure; Because two ratchet A, B are contained on the same ratchet holder, are bearing on the same fixed axis 2, its pawl end distance pivot brachium differs greatly, and b is much larger than a; Be illustrated in figure 2 as the two pawl component work schematic diagrames of conventional split, this structure keeps the A ratchet of Fig. 1, its pivot still is a fixed axis 2, its brachium still is a, same position is established a B ratchet in addition above the A ratchet, and its pivot is little axle 11, and its brachium is b, b is much smaller than a, and the connection that is meshing with each other of a pair of elevating arc is housed between two A, B ratchet.

By Fig. 1, the two pawl structures of routine shown in Figure 2, two ratchet does not wait owing to brachium, can not be synchronous when inserting or leaving ratchet, can not satisfy simultaneously and insert, break away from requirement simultaneously, and can not satisfy that insertion depth equates, two requirements that the ratchet relative rotation angle is close, opening clearance is consistent, the clutch effect is relatively poor, ratchet spring generally all is housed, the unlatching resistance of tractor when having increased work on this conventional ratchet.

Summary of the invention

The objective of the invention is to invent a kind of decelerating clutch of washing machine pawl device, to overcome whole two ratchets or two ratchet clutch weak effects of split and the big defective of unlatching resistance in the above prior art, two pawl arm appearance etc. and symmetry in this device, can insert or leave two ratchets simultaneously, save ratchet spring, satisfy the requirement that clutch is effective, opening force is little.

According to above-mentioned purpose, technical scheme of the present invention is: a kind of decelerating clutch of washing machine pawl device mainly comprises bearing retainer, fixed axis, support, bottom ratchet wheel, clutch torsion spring, clutch axle sleeve, clutch shaft, goes up ratchet and ratchet; One end of fixed axis is fixed on the bearing retainer, and the other end is rack-mount, and the clutch torsion spring is contained in the upper and lower ratchet, and the clutch torsion spring also is enclosed within on external diameter identical the clutch axle sleeve and clutch shaft; It is characterized in that: described ratchet is made up of a pair of major and minor ratchet, and the brachium of the pawl end distance pivot separately of major and minor ratchet equates and symmetry, and two pawls can synchronous opening and closing as pliers, and its pawl end can insert or leave bottom ratchet wheel simultaneously respectively and go up ratchet.

Described main ratchet is the supporting pivot with the fixed axis, and secondary ratchet serves as the supporting pivot with the little axle that is fixed on the support.

Between described major and minor ratchet by the connection that is meshing with each other of a pair of elevating arc.

Between described major and minor ratchet by the connection that links mutually of short pin and straight trough.

Described major and minor ratchet all is the supporting pivot with the fixed axis.

Between described major and minor ratchet with the connection that links mutually of short pin one, short pin two and cross frid.

Described major and minor ratchet can make up with brake apparatus, and ratchet spring is not established in synchronous interaction in addition.

Compared with prior art, advantage of the present invention and beneficial effect are as follows:

1, adopt decelerating clutch of washing machine pawl device of the present invention, main, the pawl end distance of the secondary ratchet brachium of pivot separately equates and symmetry, two pawls are synchronous opening and closing as pliers, its pawl end can insert or leave bottom ratchet wheel simultaneously respectively and go up ratchet, by the master, on secondary ratchet changes, the relative rotation of bottom ratchet wheel, control the unclamping or hold tightly of clutch torsion spring in the ratchet to clutch axle sleeve and clutch shaft, reach the effect of synchronous interface, can satisfy insertion depth equates, two ratchet relative rotation angle are close, and the requirement of opening clearance unanimity, clutch are steadily reliable, be as good as sound, effective.

2, adopt decelerating clutch of washing machine pawl device of the present invention, can make up with brake apparatus, ratchet spring is not established in synchronous interaction in addition, greatly reduces the unlatching resistance of tractor, has reduced noise, has prolonged the service life of related components.

Description of drawings

Fig. 1 is conventional whole two pawl component work schematic diagrames;

Fig. 2 is the two pawl component work schematic diagrames of conventional split;

Fig. 3 is decelerating clutch of washing machine pawl device embodiment one structural representation of the present invention, and it is the upward view of Fig. 4;

Fig. 4 is decelerating clutch of washing machine pawl device embodiment one structural representation of the present invention, and it is that the expansion view is cutd open in the rotation of Fig. 3;

Fig. 5 is decelerating clutch of washing machine pawl device example two structural representations of the present invention, and it is the upward view of Fig. 6;

Fig. 6 is decelerating clutch of washing machine pawl device example two structural representations of the present invention, and it is the revolved section expanded view of Fig. 5;

Fig. 7 is decelerating clutch of washing machine pawl device embodiment three structural representations of the present invention, and it is the upward view of Fig. 6;

Fig. 8 is decelerating clutch of washing machine pawl device embodiment three structural representations of the present invention, and it is the revolved section expanded view of Fig. 5.

Among the figure:

1, bearing retainer 2, fixed axis 3, support 4, main ratchet

5, bottom ratchet wheel 6, clutch torsion spring 7, clutch axle sleeve 8, clutch shaft

9, go up ratchet 10, secondary ratchet 11, little axle 12, elevating arc

13, power shaft 14, cross frid 15, short pin 15a, short pin one

15b, short pin 2 16, little pin 17, straight trough

The specific embodiment

In conjunction with Fig. 3, Fig. 4, be decelerating clutch of washing machine pawl device embodiment one structural representation of the present invention, this device mainly comprises: bearing retainer 1, fixed axis 2, support 3, bottom ratchet wheel 5, clutch torsion spring 6, clutch axle sleeve 7, clutch shaft 8, last ratchet 9, little axle 11 and ratchet, clutch torsion spring 6 is contained in the

bottom ratchet wheel

9,5, and the clutch torsion spring also is enclosed within on external diameter identical the clutch axle sleeve 7 and clutch shaft 8; It is characterized in that: ratchet is made up of a pair of major and

minor ratchet

4,10, main ratchet 4 serves as the supporting pivot with the fixed axis 2 that is fixed on bearing retainer 1 and the support 3, secondary ratchet 10 serves as main supporting pivot with the little axle 11 that is fixed on the support 3, the pawl end distance of the major and minor ratchet brachium of pivot separately equates, a=b, and symmetry, between major and minor ratchet by the connection that is meshing with each other of a pair of elevating arc 12, two pawls can synchronous opening and closing as pliers, and its pawl end can insert or leave bottom ratchet wheel 5 simultaneously respectively, go up ratchet 9.

When the washing operating mode, the ratchet interior (shown in Fig. 3 solid line) that the pawl end of major and

minor ratchet

4,10 inwardly inserts

ratchet

5,9 simultaneously respectively rotates to an angle two ratchets relatively in the opposite direction, clutch torsion spring 6 is released, clutch axle sleeve 7 is in free state at that time, can drive impeller by power shaft 13 and back and forth rotate, carry out washing work.

When dehydration condition, the pawl end of major and

minor ratchet

4,10 outwards opens simultaneously, leave two ratchets 5,9 (shown in Fig. 3 double dot dash line), and keep identical gap, make the free return of two ratchets, the clutch torsion spring is held clutch axle sleeve 7 and clutch shaft 8 automatically simultaneously tightly, and the clutch axle sleeve will drive clutch shaft with interior bucket rotation carrying out dehydration work at that time.

In conjunction with Fig. 5, Fig. 6, be decelerating clutch of washing machine pawl device embodiment two structural representations of the present invention, it is to be connected mutually by short pin 15 on the ratchet 4 and the straight trough 17 on the secondary ratchet 10 between major and minor ratchet with the difference of example one, and all the other structures and washing, dehydration condition are identical with first example.

In conjunction with Fig. 7, Fig. 8, be decelerating clutch of washing machine pawl device embodiment three structural representations of the present invention, this device mainly comprises: bearing retainer 1, fixed axis 2, support 3, bottom ratchet wheel 5, clutch torsion spring 6, clutch axle sleeve 7, clutch shaft 8, last ratchet 9 and ratchet; Clutch torsion spring 6 is contained in the upper and

lower ratchet

9,5, and the clutch torsion spring also is enclosed within on external diameter identical the clutch axle sleeve 7 and clutch shaft 8; It is characterized in that: ratchet is by a pair of master,

secondary ratchet

4,10 form, main, secondary ratchet serves as the supporting pivot with the fixed axis 2 that is fixed on bearing retainer 1 and the support 3 all, main, the brachium of the pawl end distance pivot of secondary ratchet equates a=b and symmetry, be fixed with short pin one 15a on the main ratchet 4, be fixed with short pin two 15b on the secondary ratchet 10, two pins insert respectively in two transverse grooves of cross frid 14, ratchet whens swing two pin can slippage in this transverse groove, the cannelure of cross frid 14 can be in the outer garden of fixed axis 2 and is fixed on little pin 16 annular groove internal diameter slippages on the support 3 with guiding, main, secondary ratchet is interlock connection mutually thus, two pawls can synchronous opening and closing as pliers, and its pawl end can insert or leave bottom ratchet wheel 5 simultaneously respectively, last ratchet 9.

When the washing operating mode, the pawl end of major and

minor ratchet

4,10 inwardly inserts respectively simultaneously in the ratchet of

ratchet

5,9 two ratchets is rotated to an angle relatively in the opposite direction, clutch torsion spring 6 is released, clutch axle sleeve 7 is in free state at that time, can drive impeller by power shaft 13 and back and forth rotate, carry out washing work.

When dehydration condition, the pawl end of major and

minor ratchet

4,10 outwards opens simultaneously, leave two

ratchets

5,9, and keep identical gap, make the free return of two ratchets, the clutch torsion spring is held clutch axle sleeve 7 and clutch shaft 8 automatically simultaneously tightly, and the clutch axle sleeve will drive clutch shaft with interior bucket rotation carrying out dehydration work at that time.

Claims

1. decelerating clutch of washing machine pawl device, mainly comprise bearing retainer (1), fixed axis (2), support (3), bottom ratchet wheel (5), clutch torsion spring (6), clutch axle sleeve (7), clutch shaft (8), last ratchet (9) and ratchet, one end of fixed axis (2) is fixed on the bearing retainer (1), the other end is installed on the support (3), clutch torsion spring (6) is contained in, bottom ratchet wheel (9,5) in, clutch torsion spring (6) also is enclosed within on external diameter identical the clutch axle sleeve (7) and clutch shaft (8), it is characterized in that: described ratchet is by a pair of master, secondary ratchet (4,10) form, main, secondary ratchet (4, the brachium of pawl end distance pivot separately 10) equates and symmetry, the synchronous opening and closing of two pawls, its pawl end are inserted or are left bottom ratchet wheel (5) simultaneously and go up ratchet (9).

2. decelerating clutch of washing machine pawl device according to claim 1 is characterized in that: described main ratchet (4) serves as the supporting pivot with fixed axis (2), and secondary ratchet (10) serves as the supporting pivot with the little axle (11) that is fixed on the support (3).

3. decelerating clutch of washing machine pawl device according to claim 2 is characterized in that: between described major and minor ratchet (4,10) by a pair of elevating arc (12) connection that is meshing with each other.

4. decelerator for washing machine pawl device according to claim 2 is characterized in that: connected by short pin (15) and the mutual interlock of straight trough (17) between described major and minor ratchet (4,10).

5. decelerator for washing machine pawl device according to claim 1 is characterized in that: described major and minor ratchet (4,10) serves as the supporting pivot with fixed axis (2) all.

6. decelerating clutch of washing machine pawl device according to claim 5 is characterized in that: connect with short pin one (15a), short pin two (15b) and the mutual interlock of cross frid (14) between described major and minor ratchet (4,10).

7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described decelerating clutch of washing machine pawl devices, it is characterized in that: described major and minor ratchet (4,10) can make up with brake apparatus, and ratchet spring is not established in synchronous interaction in addition.