CN1109151C

CN1109151C - washing machine

Info

Publication number: CN1109151C
Application number: CN98118688A
Authority: CN
Inventors: 金学实; 张凤安
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 1997-11-11
Filing date: 1998-08-25
Publication date: 2003-05-21
Anticipated expiration: 2018-08-25
Also published as: CN1217401A; JPH11156084A; ID21251A

Abstract

Disclosed is a washing machine with an unbalance/door opening measuring device, which includes a first magnet capable of swinging with the water tub when the washing tub rotates unbalanced; a reed contact switch separated from the first magnet by a predetermined distance; a box , containing the first magnet and the reed contact switch; a lever extends downward from the box and adjacent to the water tank, the first magnet is installed on the top of the lever; the second magnet is installed on the back of the washing machine door, separated from the reed contact switch by a predetermined distance . When the first and second magnets approached the reed contact switch, the reed contact switch sent a signal to the microcomputer to stop the washing machine.

Description

Washing machine

The present invention relates to washing machine, particularly a kind of like this washing machine, it has the determinator that can measure the open and-shut mode of washing machine unbalance dynamic and door simple in structure.

Usually, laundry, rinsing, draining and dehydration are that elder generation programmes in the microcomputer of the control laundry processes of washing machine.When the user selects any such program, do washing automatically according to the program of selecting.That is, in case the selected program for washing of user, the user need not to be careful, and laundry is undertaken by the program of selecting automatically.

Therefore, various sensors are very important, for example measure washing machine unbalance dynamic sensor, the sensor of the mensuration door open and-shut mode of monitoring washer need of work, it measures the work at present state exactly, and on the basis of sensor measurement result, microcomputer is accurately controlled laundry processes.

In addition, when laundry or the rotation of dehydration washing drum,, can cause the unbalance dynamic of washing drum because the inequality of doing washing in the washing drum distributes.For fear of trouble, the user should directly check out the unbalance dynamic of washing drum, has therefore developed uneven determinator.

Fig. 1 illustrates the exemplary of the conventional uneven determinator of washing machine.

As shown in Figure 1, conventional uneven determinator comprises the first make contact 3a and the second contact point 3b of the side up and down that lays respectively at shell 7.

A work rod 2, its response washing machine cover lid (not shown) open/close lifting, be located under the second contact point 3b.One end of work rod 2 is fixed to contact point fixture 4, and its other end stretches out predetermined length on the front portion of shell 7.The lever 6 of measuring the uneven rotation of washing drum stretched out on the end of shell 7.End at lever 6 forms for a hole 2a at interior assembly work rod 2.Downwards the spring 5 of pushing lever 6 is located at 6 on shell 7 and lever.Contact point changes part 1 and is formed on 7 on an end of lever 6 and shell, and the moving up and down of lever 6 makes its lifting, thereby, the second contact point 3b is connected to first make contact 3a, or disconnects from first make contact 3a.

Yet, in so conventional uneven determinator, when in being connected and disconnecting when carrying out repeatedly between

contact point

3a and 3b by lever 6, work rod 2 can since its structural disadvantages reverse.And, because the first and

second contact point

3a and 3b not sealing fully in shell 7, because the infiltration of exotic can be broken down.The steam that produces when particularly, the function of contact point can be used hot water (or warm water) disturbs.

Conclusion is, conventional uneven determinator has shortcoming, promptly, its parts are because operation meeting damage repeatedly, because

contact point

3a and 3b are moved by mechanical system, because

contact point

3a and 3b are exposed in exotic and the steam, because unexpected contact the between

contact point

3a and 3b may cause fault.

Therefore, in order to strengthen the performance of washing machine, need a kind of reliable uneven determinator of exploitation, it can overcome above-mentioned shortcoming.

And when door of washing machine was opened, in order to stop washing machine work, conventional uneven determinator should have additional parts, thereby increased part count.

The present invention is in order to address the above problem.The purpose of this invention is to provide and have the washing machine that imbalance/door is opened determinator, when measuring the washing drum unbalance dynamic, this device can prevent the fault that steam or exotic cause.

Another object of the present invention provides has the washing machine that imbalance/door is opened determinator, owing to utilize magnetic, the life-span of described device improves.

Another object of the present invention provides a kind of imbalance/door and opens determinator, and described device utilizes shared parts, and that can measure the unbalance dynamic of washing drum and door opens or close state.

For achieving the above object, according to washing machine of the present invention, comprising: a shell has a top of opening; A water drum is positioned in the shell; A washing drum is installed rotatable in water drum; A door is used to open and close the top of opening of shell; Open determinator with an imbalance/door, both be used to measure the unbalance dynamic of washing drum, also be used to measure the state that opens or closes of door.

Wherein, imbalance/door is opened determinator and is comprised a magnetic generating means, and it is arranged to when the uneven rotation of washing drum along with water drum is removable, with a magnetic-measurement device, separate the preset distance setting with the magnetic generating means, interact, measure the unbalance dynamic of washing drum with the magnetic generating means.

Described magnetic generating means is a magnet, and described magnetic-measurement device is the reed switch that described magnet makes its action.

Described imbalance/door is opened determinator and is also comprised a casing, holds described magnet and reed switch, and it is installed in a side of shell, separates preset distance with water drum; With a lever, stretch out contiguous water drum downwards from described casing, described magnet is positioned on the top of described lever, thus when the uneven rotation of washing drum, the lever of the undesired motion effect of described magnet by being subjected to water drum is near reed switch.

Lever has a hinge axis, and hinge axis stretches out from its both sides, top, and lever is the pivot rotation in casing, thereby lever can be around the hinge axis swing.

An elastic component installs to the hinge axis of lever, and in order to make when the undesired motion of washing drum disappears, lever returns its origin-location.

Casing is divided into first and second compartments by a dividing plate, the space that first compartment provides a described magnet to move with lever, and second compartment holds described reed switch, and a vibration-absorptive material spare prevents that reed switch is not subjected to external shock.

First compartment of casing has a pair of pan, is formed on the casing both sides, and the hinge axis that pivot assembles lever rotatably therein; With the opening that is formed on bottom half, lever is passed through, lever is only moved around hinge axis to a direction.

Imbalance/door is opened determinator and is also comprised one second magnet, it is arranged on the rear portion of described door, make second magnet swing with door at the angular range of a qualification, thereby by with second compartment that is installed in described casing in the interaction of reed switch, measure the motion of the open and close of described door.

Second magnet is installed on the pitman that protrudes upward from the rear portion of described door, makes that second magnet upwards separates from described reed switch, and reed switch is not worked when described door is closed; And when door is opened, the contiguous reed switch of second magnet, reed switch works.

Described magnet is fixedly mounted on the top of water drum, moves with water drum, and reed switch is fixedly mounted on outer casing inner wall, faces described magnet with predetermined space.

Reed switch is formed by a plurality of, distributes with fixed intervals on the inwall of shell.

Other purposes of the present invention and additional advantage, the following explanation of being done in conjunction with the drawings can be understood.

Fig. 1 is the profile of conventional uneven determinator;

Fig. 2 is that first embodiment of the invention has the washing machine profile that imbalance/door is opened determinator;

Fig. 3 is that imbalance/door shown in Figure 2 is opened the determinator decomposition diagram;

Fig. 4 is that imbalance/door is opened the determinator cutaway view under off working state;

Fig. 5 is that following in working order imbalance/door is opened the determinator cutaway view;

Fig. 6 is that second embodiment of the invention has the washing machine profile that imbalance/door is opened determinator;

Fig. 7 is that imbalance/door is opened determinator mounting portion enlarged drawing in washing machine shown in Figure 6;

Fig. 8 is that washing machine control part of the present invention divides block diagram.

Describe the preferred embodiment of the present invention below with reference to the accompanying drawings in detail.

Fig. 2 is that the present invention first implements to have the washing machine profile that imbalance/door is opened determinator.

As shown in Figure 2, establish a cylindrical water drum 20 that supports by a plurality of cantilevers 25 in the enclosure.In water drum 20, columniform washing drum 30 rotatably is installed, wherein form a plurality of holes.The inner bottom part that impeller 40 is installed in washing drum 30 can rotate forward backward, thereby produces current.

The driving mechanism 50 that drives washing drum 30 and impeller 40 be located at washing drum 30 below.

Driving mechanism 50 comprises a motor 51 that produces revolving force; With a transmission device 52, selectively or simultaneously the motor revolving force is transferred to impeller 40 and washing drum 30.A top cover 12 is installed in the top of shell 10.A door 11 is located on the top cover 12, opens or closes the open top of shell.

Imbalance/door with feature of the present invention is opened determinator 100 and is located in the shell 10, and when laundry or dehydration, that measures any unbalance dynamic of washing drum 30 and door 11 opens/close state.

With reference now to Fig. 3, imbalance/door that first embodiment of the invention is described is opened determinator.

As shown in Figure 3, imbalance/door is opened determinator 100 and is comprised a casing 110, is installed in the inside of top cover 12; A reed switch 120 is installed in the inside of casing 110; First magnet 130 separates a preset distance setting and removable with reed switch 120; A lever 140 has first magnet 130 in its upper end; With an elastic component 150, when the undesired motion of washing drum 30 disappears, make lever 140 return its origin-location.

Second magnet 160 is measured the opening/closing motion of door 11, also is installed in the rear side of the hinge 15 of door 11, by with the effect of reed switch 120, measure the switching of door.

The top of lever 140 is contained in the casing 110, and the bottom of lever 140 is stretched out contiguous water drum 20 downwards from casing 110.First magnet 130 is contained in the top of lever 140, thereby together swings with lever 140.Lever 140 comprises a hinge axis 141, and it is outstanding from the opposite side level on the top of lever 140.

Elastic component 150 has a pair of ring part of hinge axis 141 and the line part that stretches out up and down from ring part of being inserted into.The inner bottom part of downward straight line portion contact casing 110.

Reed switch 120 comprises a pair of tongue spare 122, their fixed interval (FI)s that is separated from each other in a glass tube 123.Reed switch 120 is in the magnetic field range of first magnet 130 time, and each contact of the tongue spare 122 of soft iron magnetisable material is magnetized, and has the N utmost point or the S utmost point according to magnetic direction, thereby produces the magnetic attraction of N and S interpolar.If magnetic attraction is bigger than the mechanical elasticity power of the tongue spare 122 of compression, the contact connects.

Open on the top of the casing 110 of box-like.The inside of casing 110 is divided into the reed switch compartment 110 that holds reed switch 120 and holds the magnet compartment 112 of first magnet 130 that is installed in lever 140 tops.Magnet compartment 112 has a space, and the magnet 130 of winning can be swung with lever 140.A pair of pan 113 is located at the both sides of the magnet compartment 112 of casing 110, and the hinge axis 141 of lever 140 inserts wherein, and making can rocking lever 140.The bottom of pan 113 and casing 110 is at a distance of preset distance.

An opening 114 is formed on the bottom at magnet compartment 112, and the external orientation lever 140 of a space to casing 110 is provided, and around hinge axis 141 shift levers 140.Flange 117 has a hole 118, and casing 110 is assembled to top cover 12, and flange 117 also installs to the both sides, top of casing 110.Screw 119 is assembled to hole 118.Second magnet 160 is installed to the top of pitman 161, and rod 161 is installed in door 11 hinge side, tilts to stretch out in the direction that makes progress, and that measures door 11 opens/close motion.When door 11 is closed, the position of second magnet 160 separates preset distance (Fig. 4) with the top of reed switch 120.

In order to prevent that reed switch 120 is subjected to any external impact, the inner space of reed switch compartment 111 seals with vibration-absorptive material spare 170.Available foamed material, rubber or fiber are done vibration-absorptive material spare 170.Couple of conductor 121 connects each reed switch.

With reference now to Fig. 4,, 5 and 8 explanations have above-mentioned imbalance/door and open the working condition of the washing machine of determinator.Figure 4 and 5 are illustrated in the profile that imbalance/door under off working state and the duty is opened determinator respectively.Fig. 8 illustrates the block diagram of the control section of washing machine.

At first, if washing drum 30 is owing to be in the non-equilibrium state rotation in the uneven distribution of the clothing of laundry or dehydration washing, washing drum 30 is run into the inwall of water drum 20, and owing to the irregular vibration of water drum 20, the lower end of lever 140 is pushed away by the inwall to shell 10 off and on then.

The motion like this of the lower end of lever 140 makes first magnet 130 that is contained in lever 140 tops repeatedly near reed switch 120, or retreats (Fig. 5) from reed switch 120.When first magnet 130 near reed switch 120, make reed switch 120 because the magnetic force of magnet 20 connects, reed switch 120 is opened, and is sent to control section 180.In addition, retreat from reed switch 120 when first magnet 130, reed switch 120 is closed (Fig. 4), and also delivers to control section 180.If in the preset time of laundry or dehydration, the number of times of opening/close of reed switch 120 surpasses outside the predetermined number (as three times), control section 180 determines that washing drum 30 is at the unbalance dynamic state, by motor-driven control section 184, stops machine operation.When motor 51 quits work, control section 180 is by display 186 and buzzer 188, this situation of circular user.

In addition, when door 11 is opened, for the work of safety washing machine should stop.For this reason, carry out the process of following mensuration door 11 open modes.

As shown in Figure 4, when door 11 is in closed condition, be located at the position of second magnet 160 at the rear portion of door 11, with the tongue spare 122 that is installed in the reed switch 120 in the casing 110, upwards separate preset distance, make reed switch 120 keep off-states (Fig. 4).At this state, if door 11 is opened on given angular range when washing machine is worked, second magnet 160 along with the motion of door 11 near reed switch 120, it is opened (Fig. 5).By the opening signal of reed switch 120, control section 180 definite doors 11 are opened, and the work of washing machine is stopped.

With reference now to Fig. 6 and 7, describes second preferred embodiment in detail.Fig. 6 and 7 illustrates the enlarged drawing of the part in the washing machine profile of the uneven determinator with second embodiment of the invention and the washing machine that unbalancing device is installed in Fig. 6 respectively.Fig. 8 illustrates the block diagram that washing machine control part of the present invention divides.

Be applied to the general structure of the washing machine of second embodiment, identical with the washing machine control operation that washing drum unbalance dynamic determinator is housed with first embodiment.That is, second embodiment and the first embodiment difference only are their ad hoc structure.The explanation of the same section of first and second embodiment will be omitted.

The uneven determinator of second embodiment of the invention comprises a reed switch 120, and it is fixed to a side and a magnet 130 of the inwall of shell 10, and it is fixed to the outer wall top of water drum 20.

Best, a plurality of reed switch are installed to the inwall of shell with predetermined space, to be convenient to measure any uneven rotation of washing drum.

For preventing under off working state and normal operating conditions, magnet 130 is connected to each other the contact point of reed switch 120, when the uneven rotation of washing drum 30, the magnetic force of magnet 130 both by the distance of 120 of magnet 130 and reed switch, was also determined by the mobile width of water drum 20.Therefore, if because the motion of the water drum 20 that the rotation of the imbalance of washing drum 30 causes, magnet 130 is near the reed switch 120 that is fixed to the inwall of shell 10, and the contact point of reed switch 120 is connected by the magnetic force of magnet 130, thereby opens reed switch 120.

If reed switch 120 is opened, a corresponding signal is sent to control section 180, and whether control section 180 determines washing drum 30 in normal rotation according to the input signal of reed switch 120, or uneven rotation.The reed switch 120 of second embodiment of the invention and the work of control section 180 are identical with second embodiment's.

As above describe in detail, washing machine of the present invention has an imbalance/door and opens determinator, and it comprises a reed switch substantially, and it has the contact point of magnetic force manipulation and at the glass tube inner sealing; With a magnet that forms magnetic force to the contact point of reed switch.

Such imbalance/door is opened the structure of determinator, can prevent laundry or dehydration procedure measure washing drum the imbalance rotation and any fault of opening/causing by steam or exotic when closing state of door.

And, adopt such imbalance/door to open assay device structures, the life-span can increase, and has strengthened the performance of washing machine.

And what imbalance/door simple in structure of the present invention opened that determinator can measure door opens/closes state, can also measure any unbalance dynamic of washing drum, thereby reduce part count, has improved the space availability ratio of washing machine.

The present invention has been described in conjunction with being considered to most realistic best embodiment, but has should be understood that and the invention is not restricted to disclosed embodiment, the present invention includes various schemes and equivalent structure in the claim spirit and scope.

Claims

1. A washing machine, comprising: a casing with an open top; a water tub installed in the casing; a washing tub installed rotatably in the water tub; a door for opening and closing the open top of the casing; and an unbalance/door opening measuring device, both for determining the dynamic unbalance of the drum and for determining the open or closed state of the door,

Wherein, the unbalance/door opening measuring device includes a magnetic generating device, which is arranged to move along with the water tub when the washing drum is unbalanced and rotates; interaction to determine the dynamic unbalance of the washing drum.

2. The washing machine according to claim 1, wherein said magnetism generating means is a magnet, and said magnetism measuring means has a reed contact switch activated by said magnet.

3. The washing machine according to claim 2, wherein said unbalance/door opening measuring device further comprises a box housing said magnet and a reed contact switch, which is mounted on one side of the casing and is predetermined separately from the water tub. distance;

and a lever projecting downwardly from said tank and adjacent to the water cylinder, said magnet mounted on top of said lever,

The lever is arranged such that unbalanced rotation of the tub pushes the lever, and the magnet mounted on top of the lever, close to the reed contact switch.

4. The washing machine according to claim 3, wherein the lever has a hinge shaft protruding from both sides of its upper portion, and the lever pivots in the casing to swing around the hinge shaft.

5. The washing machine according to claim 4, wherein an elastic member is attached to the hinge shaft of the lever so that the lever returns to its original position when the abnormal movement of the tub disappears.

6. The washing machine according to claim 3, wherein said tank is divided into first and second compartments by a partition, the first compartment provides a space for said magnet to move with the lever, and the second compartment The reed contact switch is housed and sealed with shock absorbing material.

7. The washing machine according to claim 6, wherein the first compartment of the case has a pair of hinge holes formed on both sides of the case so that the hinge shaft of the lever is pivotally fitted therein; The opening at the bottom of the box and moves in one direction around the hinge axis.

8. The washing machine according to claim 6, wherein said imbalance/door opening detection device further comprises a second magnet disposed at the rear of said door,

The door is configured such that its opening and closing drives the second magnet to swing within a limited angle range, interacting with a reed contact switch installed in the second compartment of the box to measure the opening and closing of the door.

9. The washing machine according to claim 8, wherein the second magnet is mounted on a connecting rod protruding upward from the rear of the door,

When the door is closed, the second magnet separates upward from the reed contact switch, and the reed contact switch does not work; when the door is opened, the second magnet is adjacent to the reed contact switch, and the reed contact switch works.

10. The washing machine according to claim 2, wherein the magnet is fixedly installed on an upper portion of the water tub to move together with the water tub, and the reed contact switch is fixedly installed on an inner wall of the housing to face the magnet at a predetermined interval.

11. The washing machine according to claim 10, wherein the reed contact switch is composed of a plurality of switches distributed at regular intervals on the inner wall of the housing.