CN105696258B - A kind of sensing device for testing tub of washing machine intraluminal interior weight - Google Patents
A kind of sensing device for testing tub of washing machine intraluminal interior weight Download PDFInfo
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- CN105696258B CN105696258B CN201410692056.8A CN201410692056A CN105696258B CN 105696258 B CN105696258 B CN 105696258B CN 201410692056 A CN201410692056 A CN 201410692056A CN 105696258 B CN105696258 B CN 105696258B
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Abstract
Detection is stablized, a kind of accurately sensing device for testing tub of washing machine intraluminal interior weight, with being connected to the hook A of wall upper corner in washing machine box body and be connected to the hook B of tub of washing machine outer wall lower part, it is longitudinal corresponding with hook A to link up with B, it is hung on hook A and is connected with sunpender, shell through the company's of extension damper on hook B is connected with the damper, the lower end of the sunpender is inserted into the shell of damper, supporter is equipped in shell, downrod lower end is connect with the supporter, damping spring is provided between supporter and shell upper top, the outer casing bottom is provided with spring A, the upper end spring A overhead is magnetic iron core, overhead has spring B between the magnetive cord and the supporter, outer casing underpart periphery is installed with inductance coil in magnetive cord corresponding position, the coefficient of elasticity of the spring A and the spring of spring B Property coefficient is unequal.The present invention is used for the detection of tub of washing machine intraluminal interior weight.
Description
Technical field
The present invention relates to washing machine sensing devices, more particularly to a kind of test tub of washing machine intraluminal interior weight
Sensing device.
Background technique
Washing machine needs to perceive the weight of wash load in washing, water inlet need to perceive when acting inflow number.
At present generally using motor give just spinning movement drive wash load rotation, by detection motor stop after impeller stop when
Between, the weight of fuzzy Judgment wash load.This method measurement accuracy is low, may result in erroneous judgement, causes washing water resource
Waste or washing be not clean.Special open 2001-120885 discloses a kind of weight sensing device of use in washing machine, this is to do washing
Weight sensor is set on sunpender between box body and outer barrel, electricity is converted by the compressed by weight spring deflection of washing tube
The measurement of washing tube weight is realized in the variation of sensibility reciprocal.But outer barrel of washing machine fill the water weight it is larger when, damper shell
Displacement must reach 50mm or more, therefore be fixed on the magnetive cord of damping spring one end and be located in the damping spring other end
The volume requirement of inductance coil be designed very big, it is unreasonable in volume to meet the measurement of sunpender big displacement, besides do washing
Machine fierce can shake when being dehydrated, and shake iron core with sunpender, collision is easy to happen between iron core and inductance coil.
Summary of the invention
The invention solves the iron of use in washing machine weight sensing device sensing device in laundry machine dehydration of the prior art
Core and inductance coil are easy to happen collision and the big problem in space is occupied in sensing device installation, provide of the invention one thus
The sensing device of kind test tub of washing machine intraluminal interior weight, stability is good when sensing device of the invention uses, laundry
Iron core and inductance coil will not collide when machine is dehydrated, and it is reasonable to install duty.
To solve the above problems, the technical solution that the present invention uses is that have to be connected to washing machine box body upper inside wall
The hook A in the corner and hook B for being connected to tub of washing machine outer wall lower part, hook B are longitudinal corresponding with hook A, link up with and hang on A
It is connected with sunpender, the shell through the company's of extension damper on B is linked up with and is connected with the damper, the lower end of the sunpender is inserted into damper
In shell, supporter is equipped in shell, downrod lower end connect with the supporter, is provided with and subtracts between supporter and shell upper top
Spring is shaken, is characterized in that the outer casing bottom is provided with spring A, the upper end spring A overhead is magnetic iron core, the magnetive cord
Overhead has spring B between the supporter, and outer casing underpart periphery is installed with inductance coil, the bullet in magnetive cord corresponding position
The coefficient of elasticity of spring A and the spring property coefficient of spring B are unequal.
A kind of excellent scheme of the present invention is that the coefficient of elasticity of the spring A is greater than the coefficient of elasticity of the spring B.
The damping spring can coaxially mutually set forms by damping spring A and damping spring B, and the height of damping spring B is small
In the height of damping spring A.
The supporter can have the cavity that Open Side Down, and guide rod is equipped in the cavity, and lower end of the guide rod is connected in Armco magnetic iron
Core, the length of guide rod are to maintain at the top of the guide rod upper end and the cavity and leave a distance, and the spring B is placed on guide rod, spring B
Upper end is above guide rod upper end.
The present invention is preferably set there are four the hook A, is respectively connected to wall four corners in washing machine box body, is correspondingly provided with
Four hook B, if there are four the dampers.
The present invention is connected in the hook B of washing tube outer wall lower part due to damper shell, and sunpender is connected in washing machine box body
The hook A on wall top, downrod lower end are inserted into deceleration shake device shell, and the opposite sunpender of shell energy moves up and down, the branch in shell
Support body is connected in downrod lower end (supporter and shell are not connected to), and the variation of washing tube intraluminal interior weight makes shell is opposite to support
The displacement of body passes to magnetic core by spring B and spring A, makes magnetic core in inductance coil inner axes direction with respect to inductance
Coil displacements, this be displaced in the variation for leading to inductance and washing tube accommodate weight and are changing into certain proportionate relationship, wash
Though sunpender and damper shell have mechanical shock when clothing machine washing washs especially dehydration, magnetism is since upper/lower terminal is respectively by spring
B, spring A press is fixed, and magnetive cord is set in shell, and inductance coil is set to outside shell, therefore can be to avoid Armco magnetic iron
Core the vibration collision and friction mutual with damper shell, to guarantee the measuring accuracy and reliability of sensing device.
Detailed description of the invention
Fig. 1 is the schematic diagram that the present invention is mounted on washing machine；
Fig. 2 is the structural schematic diagram of the first embodiment of sensing device of the present invention；
Fig. 3 is the washing tube weight of Fig. 2 device of the present invention and the change curve of sensors inductance winding inductance quantity；
The structural schematic diagram of second of embodiment of Fig. 4 sensing device of the present invention；
Fig. 5 is the washing tube weight of Fig. 4 device of the present invention and the change curve of sensors inductance winding inductance quantity；
Fig. 6 is the structural schematic diagram of the third embodiment of sensing device of the present invention.
Marked in the figure: 1 outer case, 2 washing tubes, 3 hook A, 4 hook B, 5 sunpenders, 6 cushion blocks, 7 dampers, 8 shells, 9
Support body, 10 damping springs, 10-1 damping spring A, 10-2 damping spring B, 11 inductance coils, 12 magnetive cords, 13 spring Bs, 14
Spring A, 15 guide rods.
Specific embodiment
Embodiment one
Sensing device of the invention is respectively connected in 1 upper inside wall four corners of washing machine box body as shown in Figure 1 and Figure 2
One hook A3, in 2 outer wall lower part of tub of washing machine circumferentially-spacedly even there are four B4 is linked up with, hook B is indulged one by one with hook A
It to correspondence, links up with extension on A and is connected with sunpender 5, and is firm through cushion block 6, link up with extension on B and be connected with damper 7, which has shell
8, the lower end of sunpender 5 is inserted into the shell of damper, and supporter 9 is equipped in shell, and downrod lower end is connect with the supporter, outside
Damping spring 10 is provided between shell upper top and supporter, shell upper is hung makes the damper be connected in hook together in hook B
B is provided with spring A14 in bottom in shell, and the upper end spring A overhead is magnetic iron core 12, the magnetive cord and state supporter it
Between overhead have a spring B 13, outer casing underpart periphery is installed with inductance coil 11, the elasticity system of spring A14 in magnetive cord corresponding position
Number is greater than the coefficient of elasticity of spring B 13.
In washing tube 2 plus water, washing tube increase weight and decline, and washing tube drives the shell 8 of damper downward together with hook B
Mobile, the lengthwise position of supporter 9 and sunpender 5 is constant, and damping spring 10 is compressed, between supporter 9 and inductance coil 11
Distance extends, spring A and the release of spring B elastic force, since the coefficient of elasticity of spring A is greater than the coefficient of elasticity of spring B, to make magnetic
Property iron core 12 moved up relative to inductance coil 11, the inductance of inductance coil generates variation, through oversampling circuit to information processing
Weight signal is exported after conversion.If the weight that water is added is G, the downward displacement of washing tube is L, and magnetive cord is with respect to inductor wire
The amount of shifting up is L2, and the coefficient of elasticity of damping spring 10 is K1, the coefficient of elasticity K2 of spring A, spring B coefficient of elasticity K3, then
The displacement L=G/K1 of washing tube, the displacement L2=L*K2/ (K2+K3) of magnetive cord.Washing tube weight and sensing device electricity
The variation relation relationship felt between the inductance of coil is as shown in Figure 3.
Embodiment two
This example sensing device, as shown in figure 4, the damping spring is same by damping spring A10-1 and damping spring B10-2
Axis mutually covers composition, and the height of damping spring B is less than damping spring A, and one end of damping spring B keeps vacantly (subtracting under A-stage
Then upper end keeps hanging when shake spring B lower end peaks at supporter).Other constructions are the same as implementation one.
Add water in washing tube, such as in the first embodiment, the shell of damper moves down, shock-absorbing spring A is first compressed,
With adding water weight to increase, when damping spring A is compressed to height equal to shock-absorbing spring B height, continue to add water, damping spring B
It is compressed.If damping spring A coefficient of elasticity be K1, drift La, damping spring B coefficient of elasticity K4, drift Lb,
The total kilometres of washing tub are L, and when damping spring B is not acted on, the weight G=L*K1 of water is added, when damping spring B is acted on, is added
The weight of water is G=(La-Lb) * K1+ (L-La+Lb) * (K1+K4).The inductance of washing tube weight and sensing device inductance coil
When between variation relation curved line relation it is as shown in Figure 5.Opposite example one, this example are suitble to the measurement in bigger weight range.
Embodiment three
This example sensing device, as shown in fig. 6, be different from example two is that supporter 9 is equipped with downwardly open cavity, in cavity
Equipped with guide rod 15, lower end of the guide rod is connected in magnetive cord 12, and guide rod and magnetive cord connecting place have the step radially extended out, guide rod
Length be to maintain at the top of guide rod upper end and the cavity and leave a distance, spring B 13 is placed on guide rod, and guide rod is set in spring B lower end
The step, spring B upper end is above guide rod upper end.Other constructions are the same as implementation two.This example is in the structure and function for keeping spring B
It can reduce the distance between magnetive cord and supporter in the case of energy, be conducive to sensing device miniaturization.
Claims (3)
1. a kind of sensing device for testing tub of washing machine intraluminal interior weight, has and is connected in washing machine box body (1)
The hook A (3) of the wall upper corner and hook B (4) for being connected to tub of washing machine (2) outer wall lower part, hook B and hook A are vertical
It to correspondence, hangs and is connected with sunpender (5) on hook A, link up with the shell (8) through the company's of extension damper on B and be connected with the damper (7), institute
The lower end for stating sunpender is inserted into the shell of damper, is equipped with supporter (9) in shell, and downrod lower end is connect with the supporter,
Damping spring (10) are provided between supporter and shell upper top, it is characterized in that the outer casing bottom is provided with spring A (14),
The upper end spring A overhead is magnetic iron core (12), there is spring B (13) overhead between the magnetive cord and the supporter, under shell
Portion periphery is installed with inductance coil (11) in magnetive cord corresponding position, and the coefficient of elasticity of the spring A is greater than the bullet of the spring B
Property coefficient.
2. sensing device as described in claim 1, it is characterized in that the damping spring is by damping spring A (10-1) and damping bullet
The coaxial mutually set composition of spring B (10-2), the height of damping spring B are less than the height of damping spring A.
3. sensing device as claimed in claim 1 or 2, it is characterized in that the supporter (9) has the cavity that Open Side Down, it should
Guide rod (15) are equipped in cavity, lower end of the guide rod is connected in magnetive cord (12), the length of guide rod be to maintain the guide rod upper end with it is described
A distance is left at the top of cavity, the spring B is placed on guide rod, and spring B upper end is above guide rod upper end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692056.8A CN105696258B (en) | 2014-11-26 | 2014-11-26 | A kind of sensing device for testing tub of washing machine intraluminal interior weight |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410692056.8A CN105696258B (en) | 2014-11-26 | 2014-11-26 | A kind of sensing device for testing tub of washing machine intraluminal interior weight |
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| CN105696258A CN105696258A (en) | 2016-06-22 |
| CN105696258B true CN105696258B (en) | 2018-12-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106930044B (en) * | 2015-12-30 | 2020-03-20 | 合肥海尔洗衣机有限公司 | Vibration damper with weighing function and washing machine |
| CN109620094A (en) * | 2018-11-15 | 2019-04-16 | 浙江欧琳生活健康科技有限公司 | A kind of dish-washing machine and its control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241658A (en) * | 1998-07-14 | 2000-01-19 | Lg电子株式会社 | Method for sensing water level and vibration of washing mahcine and apparatus therefor |
| JP2001120885A (en) * | 1999-10-27 | 2001-05-08 | Sanyo Electric Co Ltd | Weight sensor and washing machine |
| CN1570251A (en) * | 2003-07-25 | 2005-01-26 | 乐金电子(天津)电器有限公司 | Suspension arrangement for vertical washing machine |
| CN103628277A (en) * | 2013-09-23 | 2014-03-12 | 无锡小天鹅股份有限公司 | Washing machine |
| CN204401312U (en) * | 2014-11-26 | 2015-06-17 | 杭州神林电子有限公司 | A kind of sensing device testing contents weight in tub of washing machine |
-
2014
- 2014-11-26 CN CN201410692056.8A patent/CN105696258B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241658A (en) * | 1998-07-14 | 2000-01-19 | Lg电子株式会社 | Method for sensing water level and vibration of washing mahcine and apparatus therefor |
| JP2001120885A (en) * | 1999-10-27 | 2001-05-08 | Sanyo Electric Co Ltd | Weight sensor and washing machine |
| CN1570251A (en) * | 2003-07-25 | 2005-01-26 | 乐金电子(天津)电器有限公司 | Suspension arrangement for vertical washing machine |
| CN103628277A (en) * | 2013-09-23 | 2014-03-12 | 无锡小天鹅股份有限公司 | Washing machine |
| CN204401312U (en) * | 2014-11-26 | 2015-06-17 | 杭州神林电子有限公司 | A kind of sensing device testing contents weight in tub of washing machine |
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