CN100519895C

CN100519895C - Washing machine impeller mounting structure

Info

Publication number: CN100519895C
Application number: CNB2004100348815A
Authority: CN
Inventors: 西尔维奥·安东尼奥·博尔托洛蒂
Original assignee: Multibras SA
Current assignee: Whirlpool SA
Priority date: 2003-04-15
Filing date: 2004-04-15
Publication date: 2009-07-29
Anticipated expiration: 2024-04-15
Also published as: BR0301405B1; BR0301405A; CN1550611A

Abstract

The present invention provides a washing machine impeller mounting structure comprising a center shaft (10) which rotatablely supports a frame section in vertical direction and having an upper end section (11) with a spline arranged along the column direction, and mounting and fixing rotatablely a center hole (21) with a spline and arranged on an impeller (20), the impeller can rotates with the center shaft (10) together to move clothes immerged in washing liquid, and the washing liquid is contained in a multiaperture basket of the washing machine. According to the invention, the center shaft arranges at least a locking member containing member (15) on upper end (11), the impeller (20) has at least a locking member (25), the locking member (25) can move to a non-operation position from an operation position selectively, wherein when it is on the operation position, the locking member supports in each locking member containing member (15), such that the impeller is fixed on the center shaft (10) in shaft direction and said member is positioned on locking position capable of rotating relatively; on non-operation position, the locking member and the locking member containing member (15) have a certain distance interval and the impeller (20) is tripped off from the center shaft (10).

Description

The mounting structure of washing machine impeller

Background of invention

The present invention relates to a kind of mounting structure of washing machine impeller, wherein this washing machine comprises: a central shaft, this central shaft is rotatably supported on the rack section and is limited by a tubular shafts substantially and forms, and this tubular shafts is rotatably supported on the support, this support is fixed to a well-bucket below, the version that the size of this well-bucket is designed to hold a certain amount of wash liquid and a porous basket can be installed, and this porous basket is designed to hold clothing that needs wash and be fixed to version on the described tubular shafts from the below.No matter the mounting structure of well-bucket, porous basket and supporting driving shaft thereof how, the present invention all can be applicable to be provided with on the central shaft of a upper end and a bottom, and the end is installed and is being fixed impeller thereon, and impeller is used for making the clothing load that is immersed in wash liquid to move in the porous basket; And the bottom of this central shaft is mounted and is fixed in the central shaft hole of a belt pulley, and this belt pulley generally drives by the motor of a belt by washing machine.

Particularly, the present invention relates to a kind of being used for is installed to the erecting device on the end within the central shaft with impeller.

Prior art

In this area, utilization is arranged on the spline on the outside and is arranged on the upper end that the spline of arbor hole inside among the impeller is installed to impeller central shaft has been technique known, these splines can be bonded with each other, thereby impeller is rotatably fixed on the axle, so just can in the operating process of washing machine, impeller is rotated with axle.

It is that polygonal parts engage that another kind rotational fixation system utilizes telescopic parts and cross section exactly, and these polygonal limit numbers generally change in from 4 to 6 scope.

But, these rotation lock devices can not guarantee axially to lock between these parts, on the end of thread that therefore just a nut need be screwed to spool or on the end of thread of other axial location parts, for example an elastic circular ring is assembled in all groove that are arranged on the axle.

Although these known devices can be realized reliable assembling, still there is following defective in it: central shaft need be manufactured can installation shaft to the version of Lock Part, but this axial lock limiting-members itself is an optional feature.These existing technical scheme need a lot of the manufacturing and assembly manipulation, will increase the cost of syndeton like this.In the field of determining, for example for the washing machine field, especially for the not too complicated washing machine of those structures, be used for impeller is installed to the described device that drives on the central shaft that washing components uses, its manufacturing cost will be directly connected to the totle drilling cost of washing machine, for some washing machine structure, this cost is unacceptable sometimes.Except manufacturing cost was higher, these known devices also needed to adopt complicated machine.

Goal of the invention

Owing to exist above-mentioned defective in the existing erecting device, therefore the object of the present invention is to provide a kind of being used for that impeller is installed to the new structure on the axle among the washing machine, this structure can be saved some and be used for belt pulley is fixed to parts on the central shaft vertically, like this, compare with conventional device, just can provide a kind of cost to be able to greatly reduce also can be by the mounting structure that adopts fairly simple equipment just can shape.

To description of the invention

Can be applied to the mounting structure of the present invention on the washing machine of the above-mentioned type, it is characterized in that: the upper end of central shaft is provided with the parts that hold of at least one locking piece, impeller is provided with at least one Lock Part, described Lock Part can move on the off position from operating position selectively, wherein on operating position, Lock Part is bearing in respectively on each locking piece support unit, thereby when described parts are on the spin locking position, can vertically impeller be fixed on the central shaft; On off position, Lock Part holds the certain distance of parts space and the relative central shaft of impeller is under the released state vertically with locking piece.

Description of drawings

Below with reference to accompanying drawings, utilize most preferred embodiment that the present invention is described in detail, wherein:

Fig. 1 and 2 is respectively the radially sectional perspective view that is installed in a central shaft-impeller assembly in the washing machine and longitudinal section radially;

Fig. 3 will be for being installed to the perspective view of the impeller on the central shaft;

Fig. 4 is as illustrated in fig. 1 and 2 and is installed to the radial cross-section of the impeller on the central shaft upper end;

Fig. 5 is the partial cut-away perspective view that is installed in the impeller on the end on the central shaft;

Fig. 6 is for being installed in the perspective upper view of the core of the impeller on the central shaft.

Detailed description of the invention

As mentioned above, the present invention relates to a kind of washing machine of following type: this washing machine is provided with a central shaft 10, this central shaft 10 vertically is rotatably supported on the center of a rack section and is provided with a upper end 11, on this upper end, generally fixing an impeller 20, the configuration of this impeller is constructed in the following manner and is formed: when central shaft 10 rotations, it can make a large amount of clothings that are immersed in the wash liquid and are contained within the porous basket 2 produce required moving, and the structure of this porous basket 2 is known, and be installed in the inside of a well-bucket 3, and well-bucket 3 is fixed on the washing machine framework.

This central shaft 10 also is provided with a bottom 12, and this bottom is protruding by porous basket 2 and well-bucket 3, and generally also is fixed with a belt pulley 4 within it, and this belt pulley can be driven by a motor that is fixed on the washing machine framework.

According to the present invention, the upper end 11 of central shaft 10 is vertically arranged with spline structure and is configured to carry the version that at least one locking piece holds parts 15 in its outside, these parts 15 are all groove of end axis on prolongation that is arranged on central shaft 10 in illustrated embodiment, and described prolongation stretches out from the keyway zone of central shaft.

On the other hand, impeller 20 roughly is one to have the parts of circular contour and is made by the plastic material mold pressing, carry at least one Lock Part 25 on this impeller 20, and Lock Part 25 can be moved on the off position selectively by an operating position, wherein on operating position, this Lock Part can lock onto impeller 20 on the central shaft 10 vertically, and at this.On the position, two parts keep rotationally locking mutually by its splined section; And on off position, this Lock Part 25 can make impeller 20 relative central shaft 10 releases vertically.On operating position, Lock Part 25 is bearing in the corresponding locking piece of end axis on prolongation 11a that is positioned at central shaft 10 respectively and holds parts 15, thereby prevents that impeller 20 from outwards moving under the state that is bonded with each other by spline with central shaft 10 vertically.On off position, Lock Part 25 skew so that itself and locking piece hold parts 15 and keep at a certain distance away, can vertically impeller 20 being disassembled from central shaft 10.

In illustrated preferred structure, each Lock Part 25 all presents the form of a protruding tongue, this protruding tongue can produce strain when moving on the off position from operating position, and can be on the position of the centre bore 21 of an adjacent impeller 20 should protruding tongue and impeller 20 make all-in-one-piece parts.As shown in the figure, also can along the circumferential direction be arranged side by side a plurality of Lock Parts 25, purpose is to make these Lock Parts join together to form a sleeve pipe, this sleeve pipe can be installed in the below of impeller 20 and surround the end axis of central shaft 10 loosely to prolongation 11a, described Lock Part 25 also is provided with an internal protrusion 25a, when Lock Part 15 is in mode of operation following time, the locking piece that this internal protrusion is bearing in central shaft 10 holds on the parts 15.

In a preferred embodiment, impeller 20 is provided with a central upper portion groove 26, and this groove has the diapire of an annular, and on this diapire, one is made with the centre bore 21 of coaxial loop configuration and impeller 20 in the bottom of Lock Part 25.

Utilize this structure, the axially-extending part 11a of Lock Part 25 and central shaft 10 is remained on the retraction impeller 20 under the state in the central recess 26.

Shown in Figure 4 and 5, this device also comprises a locking holding member 30, when Lock Part 25 is on the illustrated operating position, this locking holding member 30 can be mounted to around the Lock Part 25, purpose is that Lock Part is remained on the correct position, preventing its strain, thereby radially outwards moves on the off position, on this off position, it can make the outside vertically direction of impeller 20 break away from the state that is bonded with each other with central shaft 10.

This locking holding member 30 can pass through the manufactured shaping of different ways, and needing only it can be along the circumferential direction around Lock Part 25, purpose be Lock Part 25 is stabilized in reliably can be vertically fixedly on the operating position of impeller 20.

In illustrated structure, locking holding member 30 is a columnar tubulose capping, and Lock Part 25 is gone up and surrounded to the end axis that central shaft 10 is installed in this capping to prolongation 11a.Will be appreciated that this locking holding member 30 also can be a kind of inverted cup that can be assembled on the Lock Part 25.In order to cover central upper portion groove 26, this locking holding member 30 can be wholely set a periphery 31, and the also available plastic mould pressing of this periphery 31 is made and is bearing on the impeller 20 around described central recess 26.

Above-mentioned structure can with impeller 20 vertically secure fixation to the upper end 11 of central shaft 10, and need not to be provided with any other holding member, and other holding member becomes parts that are independent of impeller probably.In addition, the assembling of this impeller is also extremely simple, move down described impeller because only need vertically around the upper end 11 of central shaft 10, up to arriving the spline that is arranged on two parts and can cooperatively interacts is on the position that is bonded with each other, this position can be guaranteed by a retainer (not shown) that is arranged on the central shaft 10 and can be suitably passed.On the position that impeller 20 is assemblied in fully on the central shaft 10, Lock Part 25 is by making its internal protrusion 25a move to the top, free upper end of central shaft 10 and outside strain radially, purpose is to allow described internal protrusion 25a to continue to get back to by elasticity the operating position of Lock Part 25, on this position, it is bearing in locking piece and holds in the parts 15, thereby vertically with impeller 20 fix in position.

Although one embodiment of the present of invention have been made explanation,, be appreciated that in the protection domain that limits by appended claims, can make multiple variants and modifications to the form and the structure of each parts of constituting mounting structure.

Claims

1. mounting structure that is used for the washing machine impeller, described washing machine comprises: a central shaft (10), this central shaft vertically is rotatably supported on the rack section of this washing machine and is provided with a upper end (11), this upper end is vertically arranged with spline, and a centre bore (21) that is positioned on the impeller (20) and is provided with spline is also assembled and locked rotationally in this upper end on every side, this impeller will rotate with central shaft (10), thereby a large amount of clothings that are immersed in the wash liquid are produced to be moved, and wash liquid is contained in the porous basket of washing machine, described structure is characterized in that: the upper end (11) of central shaft (10) has at least one locking piece and holds parts (15), have at least one Lock Part (25) on the impeller (20), Lock Part (25) can move on the off position selectively from an operating position, wherein on operating position, described Lock Part is bearing in corresponding locking piece to be held on the parts (15), thus between impeller (20) and central shaft (10) in relative rotation the latched position place vertically impeller (20) is locked on the central shaft (10); On off position, described Lock Part and locking piece hold the certain at interval distance of parts (15) and impeller (20) and central shaft (10) are thrown off.

2. structure according to claim 1 is characterized in that: described Lock Part (25) is in strain when operating position moves to off position.

3. structure according to claim 2 is characterized in that: described Lock Part (25) is near the protruding tongue the centre bore (21) that a kind of and impeller (20) be made into integration and be positioned at impeller.

4. structure according to claim 3, it is characterized in that: a plurality of Lock Parts (25) along the circumferential direction are arranged side by side, form a sleeve pipe to unite, the end axis that this sleeve pipe is looped around central shaft (10) loosely to prolongation (11a) on every side, and the below of Lock Part (25) engages with impeller (20), its top then is provided with an internal protrusion (25a), when Lock Part (25) was on the operating position, the corresponding locking piece that this projection is bearing in central shaft (10) held on the parts (15).

5. structure according to claim 4 is characterized in that: described locking piece holds parts (15) and is limited by all grooves of end axis on prolongation (11a) that is arranged on central shaft (10) and form.

6. structure according to claim 4 is characterized in that: the bottom of described Lock Part (25) engages with the annular bottom wall of the central upper portion groove (26) of impeller (20), and is coaxial with the centre bore (21) of impeller (20).

7. structure according to claim 6, it is characterized in that: it also comprises a locking holding member (30), these parts assemble around Lock Part (25) on operating position, so that described Lock Part (25) is remained on the described operating position, with prevent its strain to impeller (20) from its state that engages with central shaft radially outwards on the off position of relieving.

8. structure according to claim 7, it is characterized in that: described locking holding member (30) is a columnar tubulose capping, and this tubulose capping will be mounted to the end axis of central shaft (10) and go up and surround Lock Part (25) to prolongation (11a).

9. structure according to claim 8 is characterized in that: described locking holding member (30) has been wholely set a periphery (31), and central recess (26) is gone up and surrounded to this rim bearing at impeller (20).