CN100432328C

CN100432328C - Spring seat of clutch for washing machine and its making method

Info

Publication number: CN100432328C
Application number: CNB031096980A
Authority: CN
Inventors: 尹聖鲁
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2003-04-11
Filing date: 2003-04-11
Publication date: 2008-11-12
Anticipated expiration: 2023-04-11
Also published as: CN1536147A

Abstract

The present invention provides a spring seat and a making method thereof for a clutch of a washing machine. The spring seat is a cylinder body with an inner hole which is matched with a gear shaft, and the peripheral surface of the upper end part of the spring seat is in a chamfered edge shape. The making method is processed according to the following steps: 1) a mould is made, firstly, an upper part mould and a lower part mould of the spring seat are made, and the junction surface of the upper part mould has a convex part which is the peripheral surface of the upper end part of the spring seat and is in a chamfered edge shape; an inner cavity of the spring seat which is arranged in the lower part mould is matched with the outer diameter of the convex part of the upper part mould; 2) a technology for making an inner hole core of the spring seat and a technology for making the spring seat by sintering powder metallurgical materials adopt a universal technology. The present invention has the advantages that the present invention improves the making method for the spring seat of the clutch of the washing machine and reduces the processing complexity and the difficulty for clearing up fins, etc. The present invention has the advantages of simple manufacture technology, improved efficiency and reduced cost.

Description

Spring seat of clutch for washing machine and manufacture method thereof

Technical field

What the present invention relates to is washing machine, particularly be the invention of spring seat of clutch for washing machine and manufacture method thereof.

Background technology

In general, washing machine is to utilize the rubbing action of the current that the stirring vane rotation of the softening effect of washing powder and agitator causes and agitator to put on washed percussion to remove product attached to the various dirts on clothes, the bedding.Washing machine generally detects washed amount and kind by sensor, automatic setting laundry pattern, and again according to washed amount and kind, the water of will the doing washing appropriate water level that feeds water is done washing by system controlled by computer.

As shown in Figure 1, existing washing machine structure comprises: there is the dehydration tube of most dewatering holes rotations of the band washing drum 12 of holding concurrently urceolus 2 inside in shell 11; The bottom center of washing drum 12 has rotatable laundry stirring vane 1; The bottom of urceolus 2 is the clutches 4 to washing drum 12 and laundry stirring vane 1 transferring power.

Bottom one side of above-mentioned urceolus 2 is equipped with motor 3, and being contained on 3 in the motor is motor pulley 13, is contained between clutch pulley 14 and the motor pulley 13 on the clutch 4 to be connected with V-shape belt 15.

As shown in Figure 2, clutch pulley 14 tightens sprocket drive spindle 5; Gear shaft 5 upper ends are washing shaft 16; Dehydrating shaft 17 is equipped with in washing shaft 16 outsides.

The lower end of dehydrating shaft 17 is fixed on the wheel hub 18a of gear casing, and the bottom of wheel hub 18a is connected with undergear shell 18b, and wheel hub 18a is equipped with inside the gear mechanism 19 that reduces power.

The bottom of gear shaft 5 is fixed with spring base 10 and clutch bushing 6; The periphery of clutch bushing 6 is equipped with and controls the brake lever 20 of the electromagnetic valve interlock of draining valve; The clutch lever 23 of interlock when one side of brake lever 20 is equipped with its startup; The lower end of clutch lever 23 is contained on the driving cam 21 that together rotates with clutch lever 23.

The clutch 4 of said structure course of work when laundry and dehydration is as follows:

During laundry, the electromagnetic valve of control draining valve (omitting diagram) is in closed condition, starts brake lever 20, and clutch lever 23 is pushed, cause with the driving cam 21 of clutch lever 23 interlocks to combine with clutch bushing 6, the direction that clutch spring 9 is urged to the diameter that increases changes.

Because the increase of clutch spring 9 diameters, make from spring base 10 outer peripheral faces occur from every state.

After the revolving force of motor 3 was passed to clutch pulley 14, gear shaft 5 by V-shape belt 15, the washing shaft 16 by the top that is connected with gear shaft 5 was delivered to laundry stirring vane 1 again, 1 rotation of laundry stirring vane.

During dehydration, under the state of the laundry water natural drainage in dehydration tube 12, the electromagnetic valve pulling brake lever 20 of controlled draining valve, the interlock of brake lever 20 and clutch lever 23, driving cam 21 will break away from from the zigzag joint portion of clutch bushing 6, because restoring force, the diameter of clutch spring 9 diminishes, at this moment, clutch spring 9 clamps undergear shell 18b and spring base 10.

The power that motor 3 transmits makes gear shaft 5 rotations, the spring base 10 that is fixed on the gear shaft 5 rotates with gear shaft 5, at this moment, the clutch spring 9 of fastening spring seat 10 and undergear shell 18b will be to the turn opposite spin, bring into play stronger clamping force, rotation wheel hub 18a and gear mechanism 19 can not slided.

During dehydration, the transmission of power of motor 3 dewaters the washing drum dual-purpose dehydration tube 12 of rotation at a high speed to clutch 4 and washing shaft 16, dehydrating shaft 17.

When dehydration stops, damper brake liner 7 will be close to the outer peripheral face 181 of wheel hub 18a, stop operating after 12 brakings of forced dehydration tube.

Make above-mentioned existing structure spring base the time, have following problem:

After existing spring base 10 is shaped,,, need the polishing operation in order to remove burr because there are the burr of protrusion in the outside of the spring base diameter after forming.As existing spring base 10 are thermal sinterings, in upper die 70a and the contacted place of lower mould 70b, burr occur to radial direction, if do not remove this burr, interference between the spring 9 in the spring base 10 and the outside will inevitably take place, and therefore must remove burr, thereby can increase manufacturing process.Therefore, there is the many and high shortcoming of production cost of operation in the manufacture method of existing spring base 10.

Summary of the invention

The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of omission to remove the burr manufacturing procedure, reduce the spring seat of clutch for washing machine and the manufacture method thereof of manufacturing cost

Solving the problems of the technologies described above the technical scheme that is adopted is:

A kind of spring seat of clutch for washing machine, this spring base are cylinders that has endoporus, and its endoporus cooperates with gear shaft, and the upper end outer peripheral face of spring base is the chamfered edge shape.

A kind of spring seat of clutch for washing machine manufacture method, this manufacture method is carried out as follows:

1). make mould: at first make the upper die and the lower mould of spring base, the faying face of its upper die has protuberance, and this protuberance makes the upper end outer peripheral face of spring base be the chamfered edge shape; The spring base inner chamber of lower mould matches with the external diameter of upper die protuberance;

2). make the technology of spring base endoporus fuse and all adopt common processes with the technology that the powdered metallurgical material sintering is made spring base.

The invention has the beneficial effects as follows: the present invention has improved the spring seat of clutch for washing machine manufacture method, has reduced machining complexity and difficulty such as removing burr.Make manufacturing technique simple, raise the efficiency and reduce cost.

Description of drawings

Fig. 1 is the profile of existing washing machine structure;

Fig. 2 is the profile of clutch configuration among Fig. 1;

Fig. 3 is the spring base stereogram of Fig. 2;

Fig. 4 is a spring base stereogram of the present invention;

Fig. 5 is that the protuberance of spring base mould of the present invention is tetragonal profile;

Fig. 6 is the rectangular leg-of-mutton profile of the protuberance of spring base mould of the present invention.

The specific embodiment

The present invention is a kind of spring seat of clutch for washing machine, and this spring base is one and has the cylinder that cooperates endoporus with gear shaft that the upper end outer peripheral face of spring base 10 is the chamfered edge shape.

The upper end outer peripheral face of described spring base 10 is step-like by the part of chamfered edge.

The upper end outer peripheral face of described spring base 10 is the chamfering shape by the part of chamfered edge.

Described spring base material forms with powder metallurgy sintered.

The invention provides a kind of manufacture method of spring seat of clutch for washing machine, this manufacture method is carried out as follows:

1). make mould: at first make the upper die 70a and the lower mould 70b of spring base 10, the faying face of its upper die 70a has protuberance 700a, and this protuberance 700a makes the upper end outer peripheral face of spring base be the chamfered edge shape; Spring base 10 inner chambers of lower mould 70b match with the external diameter of upper die 70a protuberance 700a;

2). make the technology of spring base 10 endoporus fuses and all adopt common processes with the technology that the powdered metallurgical material sintering is made spring base 10.

The section shape of the protuberance 700a of upper die 70a is quadrangle.

The rectangular triangle of section shape of the protuberance 700a of upper die 70a.

Below in conjunction with accompanying drawing embodiments of the invention are further specified:

Among the present invention, washing shaft 16 is arranged at gear shaft 5 tops; Dehydrating shaft 17 is equipped with in washing shaft 16 outsides; The bottom of dehydrating shaft 17 is fixed on the wheel hub 18a of upper gear shell; Wheel hub 18a bottom connects undergear shell 18b; Wheel hub 18a is equipped with inside the gear mechanism 19 in order to reduce power; There are fixing spring seat 10 and clutch bushing 6 in the bottom of gear shaft 5; Clutch bushing 6 peripheries be equipped with and control draining valve the electromagnetic valve interlock brake lever 20 and spring base manufacture process of the present invention that clutch lever 23 constitutes as mentioned above and act on as follows.

Just can know that with reference to Fig. 4 and Fig. 5 spring base 10 is thermal sinterings.Earlier powder metallurgy is poured into rear flank in the lower mould 70b, make the upper die 70a and the lower mould 70b matched moulds that are positioned at lower mould 70b top.

According to spring base 10 manufacture methods of the present invention, be formed with the protuberance 700a of the chamfered edge part that is equivalent to spring base 10 at upper die 70a faying face.Therefore when upper die 70a and lower mould 70b matched moulds, the spring base inner chamber of lower mould 70b matches with upper die 70a protuberance 700a external diameter; Powder metallurgy can not pour into the part that protuberance 700a forms.

After sintering is finished, separate upper die 70a and lower mould 70b, when spring base 10 sintered bodies are taken out from mould, the upper end outer peripheral face of the spring base 10 that is shaped according to the protuberance 700a of upper die faying face will be the chamfered edge shape.

By the part of chamfered edge, its section shape is quadrangle or right angle trigonometry shape in the spring base 10.Even form burr in the spring base 10, can not have influence on spring base 10 outermost profiles yet, even do not remove burr, cooperatively interacting between spring 9 and the spring base 10 can not taken place yet, so remove the polishing work of removing burr from.

Claims

1. spring seat of clutch for washing machine, this spring base is a cylinder that has endoporus, its endoporus cooperates with gear shaft, it is characterized in that the upper end outer peripheral face of spring base (10) is the chamfered edge shape.

2. according to the spring base described in the claim 1, it is characterized in that the upper end outer peripheral face of spring base (10) is step-like by the part of chamfered edge.

3. according to the spring base described in the claim 1, it is characterized in that the upper end outer peripheral face of spring base (10) is the chamfering shape by the part of chamfered edge.

4. according to the spring base described in the claim 1, it is characterized in that this spring base material is to form with powder metallurgy sintered.

5. spring seat of clutch for washing machine manufacture method is characterized in that this manufacture method carries out as follows:

1). make mould: at first make the upper die (70a) and the lower mould (70b) of spring base (10), the faying face of its upper die (70a) has protuberance (700a), and this protuberance (700a) makes the upper end outer peripheral face of spring base be the chamfered edge shape; Spring base (10) inner chamber of lower mould (70b) matches with the external diameter of upper die (70a) protuberance (700a);

2). make the technology of spring base (10) endoporus fuse and all adopt common processes with the technology that the powdered metallurgical material sintering is made spring base (10).

6. according to the manufacture method described in the claim 5, it is characterized in that the section shape of the protuberance (700a) of upper die (70a) is quadrangle.

7. according to the manufacture method described in the claim 5, it is characterized in that the rectangular triangle of section shape of the protuberance (700a) of upper die (70a).