CN1083034C

CN1083034C - Washer with plastic rinsing container

Info

Publication number: CN1083034C
Application number: CN97118084A
Authority: CN
Inventors: H·霍佩; A·梅斯里尼
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 1996-08-21
Filing date: 1997-08-21
Publication date: 2002-04-17
Anticipated expiration: 2017-08-21
Also published as: DE59705508D1; ES2169298T3; TR199700829A3; EP0825291B1; RU2129177C1; KR19980018724A; PL321698A1; CN1179489A; BR9704470A; DE19633705A1; KR100440767B1; PL185363B1; ATE209716T1; EP0825291A1; TR199700829A2

Abstract

The washing machine with a horizontal drum, and a plastics washing fluid tub, has a circle of straps (13) at intervals round the base (11), at right angles to the main axis of the base (11). At least three laying surfaces (19) are shaped at the base (11) within the circle, on a plane parallel to the main plane, to take the loading weight (12) with a density of >= 2 g/cm<3>, to be secured by the straps (13). They are clamped externally by a clamping strip (16) against the narrow mantle surface of the weight (12).

Description

The washing machine that has a plastic rinsing container

The present invention relates to a kind of washing machine, it has a rinsing container that is used for cleaning-drum, and cleaning-drum has at least near the rotating shaft of level, is equipped with one at least near circular sheet counterweight in the bottom of rinsing container, and the proportion of weight material is greater than 2g/cm ³

DE4238686C1 discloses a kind of such washing machine.Have perforation on the counterweight of this washing machine, its be contained in rinsing container bottom, the conical helix tube of frustum is consistent.The screw line that screws in from the upper surface of counterweight points to the spring base perforation on the one hand, also is the helix tube that is arranged in the thermoplastic material of perforation from following sensing on the other hand.At this, tensile force is big like this, although thermoplastic is distinctive lax, leaves enough elastic force in its life termination fashion.Except obtain the difficulty of accurate staring torque in a kind of so thorny scope, the obtainable uniformity of thermoplastic almost can not satisfy this spiral probably and connect the conditional request that should satisfy.

A kind of faultless in this respect counterweight type of attachment is disclosed in DE3217160A1.In the limit of concrete weight coating top casting one metal outside hub, it is an outer volume that is in the tilted angle downwards.The eminence of rinsing container at the preceding end also has so outer volume.The common top that constitutes by a top shape tensioning ring overlap joint of the inclined outer surface of two outer volumes.During tension, the end face of two outer volumes moves towards each other.Between rinsing container and counterweight, form stable a connection thus.

The shortcoming of this type of attachment is in the scope inner concrete of the outer hub of casting and the disadvantageous collocation of these two kinds of materials of steel.Because hub expands greatly than concrete bodies outside when temperature is high, lose connection closely between these two parts gradually.To this, bonding strength will be affected, and then the size accuracy of counterweight is had higher requirement.For this reason, how many top scopes of tightening hoop is placed earlier on the outward flange of outer volume, at this moment counterweight just can be enough near the preceding end of rinsing container.In addition, because counterweight must remain on the eminence at the preceding end of rinsing container before loading onto tensioning ring, therefore the installability of this known counterweight is damaged.

The basis of task of the present invention is, for the described the sort of washing machine of beginning, finds out a kind of type of attachment of counterweight of rinsing container, and it does not have tangible external action under any service condition of washing machine, and installs easily.Consider that simultaneously any special mounting condition is not forced in the customer service of fixed weight body aspect.

According to the present invention, this task solves like this, form a circumference in the bottom by the clamping plate that separate each other perpendicular to the bottom principal plane, in this circumference of bottom, form three at least and be positioned at a contact-making surface on a plane that is parallel to the bottom principal plane, counterweight is kept flat on these contact-making surfaces by these clamping plate, the outer surrounding of clamping plate a puller strap, with they narrow periphery surface tensions by counterweight.

For the robustness according to type of attachment of the present invention in lifetime is faultless.Different temperature expansions is to the not influence of robustness of this connection, and with respect to the diameter on this chassis, the allowable tolerance of counterweight is 1mm, and this also is faultless.In addition, be easy to install according to counterweight of the present invention.Because clamping plate have maintained counterweight before tension band is tensioned, and counterweight automatic centering in ring when the tension band tensioning.Because counterweight anywhere not with the point-like support fixation in rinsing container, so eliminated the stress fission of counterweight.If breach has been arranged in counterweight, and the thrust on the periphery also can make its pressing.

Can be according to washing machine of the present invention with the so further structure of very favorable mode, the narrow periphery surface of counterweight tilts like this, and the diameter of the circular surface of non-assembling side is less than the diameter of the circular surface of assembling side.Whereby, under the situation of tension, the free end of each clamping plate is clipped on the less circular diameter, and counterweight is not only stressed reasonably to be connected by the thrust of puller strap thereby make, and shape reasonably is fixed on the bottom of rinsing container.

Can also so advantageously constitute according to washing machine of the present invention, make the free end of clamping plate have a rising that exceeds puller strap thickness.Particularly connect with foregoing further structure and have such advantage, promptly puller strap can not slide from the free end of clamping plate.

According to another favourable structure of the present invention, puller strap is a ring steel belt, and its each end is the tensioning Lock Part, like this, just can produce necessary tensioning pressure in simple mode.

Advantageously, the periphery surface that makes counterweight under the locking piece in tension is just for smooth, on the circumference of clamping plate, leave one at least with the suitable space of length of tension locking piece.The effect in this case of flat sections on the periphery surface is to be formed with the direction that is beneficial to the screw fixed locking piece.

Present invention is described below in conjunction with the embodiment shown in the accompanying drawing.

Fig. 1 is a side view of cutting the top loading washing machine that illustrates open;

Fig. 2 is a bottom view according to the present invention's rinsing container structure, that counterweight is housed;

Fig. 3 one passes the almost vertical profile of the counterweight that is fixed in rinsing container bottom along the hatching III-III among Fig. 2;

Fig. 4 is the zoomed-in view of the thin IV of portion in the tension locking piece zone among Fig. 2;

Fig. 5 is the zoomed-in view of vertical section before tension that is passed in corresponding to the counterweight in the strap zone of the thin V of portion among Fig. 3;

Fig. 6 is the zoomed-in view of the same area after tension among Fig. 5.

The washing machine that can feed from above among Fig. 1 comprises a rinsing container 2, and it is driven by a drive unit 3, and drive unit is made up of motor 4, belt 5 and belt pulley 6.The cleaning-drum (not shown at this) that belt pulley and can support in rinsing container 2 with horizontally rotating is rotatably connected.Rinsing container 2 can be hung quiveringly by the spring 7 in the housing 8 of washing machine 1, and is supported in the bottom 10 of housing 8 by shock absorber 9.Fix a counterweight 12 on the chassis 11 that is positioned at the rinsing container 2 of drive unit 3 opposite sides, its effect is the weight equalizer as the quality of drive unit 3 on the one hand, is the damping block as vibration rinsing container system on the other hand.

The loop configuration of counterweight 12 as can be seen in the view on the chassis shown in Fig. 2 11.This counterweight is contained in the flat jar shape structure on chassis 11, and the clamping plate 13 that the peripheral side wall of jar shape structure is arranged on by separating each other on the circumference constitute, and clamping plate 13 are the parts by chassis 11 one made from plastics.On the position that can find out by the thin IV of portion, in the circumference that clamping plate constitute, leave a space 14, counterweight 12 has a flat sections 15 on this space.It is as the bearing of the two tension framves 17 at the two ends that are contained in a puller strap 16 respectively, and the pulling force that is applied to by a bolt 18 on the two ends of puller strap 16 furthers two tension framves each other.

The section that passes chassis 11 and counterweight 12 from hatching III-III along Fig. 2 shown in Figure 3 as can be seen, counterweight 12 contacts with chassis 11 by a contact-making surface 19.Contact-making surface 19 is the part of one of protuberance 20 of three rounded distributions on the chassis 11.It is in order to give the contact position that counterweight 12 1 limits that these three protuberances are set.Because the remaining surface on chassis 11 does not contact with counterweight 12 by this way, therefore avoided the vibrating noise that this connection produced.

The thin IV of portion among Fig. 2 shown in amplifying in Fig. 4 at length shows the tension locking of puller strap 16.Tension frame 17 is housed at the two ends of puller strap 16, and it simultaneously is used to keep the bolt head 21 of bolt 18, and another side is used to keep the nut 22 of bolt 18.Tension frame 17 slides on the flat sections 15 of counterweight 12 during the bolt tension, can not make leg 23 depart from its square position and move.

The thin V of portion among Fig. 3 shown in Fig. 5 has represented clamping plate 13 and the position of puller strap 16 before being strained by

tension locking piece

17,18,21,22.Can clearly be seen that, narrow periphery surface 24 slight inclination of counterweight 12, the diameter of contact side 25 that makes counterweight 12 is greater than the diameter of noncontact side circular surfaces 26, and the inclination angle is 2.5 °.In order to make clamping plate 13 easy on the narrow periphery surface 24 that withstands on counterweight 12 under the pressure of puller strap 16, the root thickness of clamping plate 13 is littler than its free-ended thickness.Some clamping plate that are distributed on the circumference on chassis 11 have a rising 27 that exceeds puller strap thickness on its free end.The effect of these risings is to prevent puller strap 16 landing from the clamping plate 13 of slight inclination.Remaining clamping plate does not have this rising, shown in the thin X of portion among Fig. 3.

Situation after installing corresponding to the thin portion among Fig. 5 has been shown among Fig. 6.At this moment puller strap 16 is pressed in whole clamping plate 13 on the periphery surface 24 of inclination of counterweight 12.Like this, on the one hand since tightening force act on the periphery surface, therefore stressed rationally, on the other hand, because the angle between the contact-making surface of contact-making surface 25 and clamping plate 13 is decreased to 87.5 ° (having reduced 2.5 °) from 90 °, thereby shape is reasonable.The shape of clamping plate 13 was selected (as being clear that among Fig. 6), formed one 90 ° of angles at its outer surface of its contact position with respect to the contact side 25 of counterweight 12.So also reduced the danger of landing on puller strap 16 middle clamp plates 13.

Claims

1. washing machine, it has a rinsing container that is used for cleaning-drum, and cleaning-drum has at least near the rotating shaft of level, is equipped with one at least near circular sheet counterweight in the bottom of rinsing container, and the proportion of weight material is greater than 2g/cm ³It is characterized in that: (11) form a circumference by the clamping plate (13) perpendicular to bottom (11) principal plane that separate each other in the bottom, in this circumference of bottom (11), form three at least and be positioned at a contact-making surface (19) on a plane that is parallel to the bottom principal plane, counterweight (12) is kept flat on these contact-making surfaces by these clamping plate (13), the outer surrounding of clamping plate a puller strap (16), and they are headed on narrow periphery surface (24) tension of counterweight (12).

2. washing machine as claimed in claim 1 is characterized in that: the narrow periphery surface (24) of counterweight (12) tilts like this, and the diameter of circular surface (26) that makes the noncontact side is less than the diameter of the circular surface of contact side (25).

3. washing machine as claimed in claim 1 is characterized in that: the free end of three or more clamping plate (13) has a rising (27) that exceeds the thickness of puller strap (16).

4. washing machine as claimed in claim 2 is characterized in that: the free end of three or more clamping plate (13) has a rising (27) that exceeds the thickness of puller strap (16).

5. as the described washing machine of one of claim 1 to 4, it is characterized in that: puller strap (16) is a ring steel belt, and its end has two parts (17) that are used to strain locking piece (17,18,21,22).

6. washing machine as claimed in claim 5, it is characterized in that: under tension locking piece (17,18,21,22), the periphery surface (24) of counterweight (12) is flat fully, on the circumference of clamping plate (13), have one at least with the tension locking piece (17,18,21,22) the suitable space (14) of length.