CN204608414U - The sensing device of contents weight in test tub of washing machine - Google Patents
The sensing device of contents weight in test tub of washing machine Download PDFInfo
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- CN204608414U CN204608414U CN201520032470.6U CN201520032470U CN204608414U CN 204608414 U CN204608414 U CN 204608414U CN 201520032470 U CN201520032470 U CN 201520032470U CN 204608414 U CN204608414 U CN 204608414U
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- spring
- suspension rod
- hook
- supporter
- sensing
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Abstract
The utility model relates to a kind of sensing device testing contents weight in tub of washing machine, there is the hook A being connected to washing machine box body upper inside wall bight and the hook B being connected to tub of washing machine outer wall bottom, hook B is longitudinally corresponding with hook A, hook A is connected with suspension rod, hook B is connected with damper through connecting damper shell, supporter is provided with in damper shell, damper outer casing underpart is built-in with body, body upper end is by being connected in below supporter, suspension rod lower end is positioned at body bottom, supporter passes and pine is placed on suspension rod, push up between the upper top of supporter and damper shell and be provided with damping spring, suspension rod lower end has spring catch platform, on spring catch platform, top is pressed with sensing spring, damping spring and sensing spring are placed on suspension rod coaxially, body bottom overcoat has inductance coil, and be built-in with magnetive cord, this magnetive cord involves in suspension rod lower end.The utility model is used for the detection of contents weight in tub of washing machine.
Description
Technical field
The utility model relates to washing machine sensing device, particularly relates to a kind of sensing device testing contents weight in tub of washing machine.
Background technology
Washing machine needs the weight of perception wash load when washing, need during water inlet action perception inflow number.Generally adopting motor to give just spinning movement at present drives wash load to rotate, the time that after being stopped by detection motor, impeller stops, the weight of fuzzy Judgment wash load.This method certainty of measurement is low, may cause erroneous judgement, causes the waste of washings resource or washs unclean.JP 2001-120885 discloses a kind of weight sensing device of use in washing machine, this is that the suspension rod between casing of washing machine and outer barrel arranges weight sensor, be converted into the change of inductance value by the compressed by weight spring deflection of washtub, realize the measurement of washtub weight.But outer barrel of washing machine is when water filling weight is larger, the displacement of damper shell reaches more than 50mm, therefore the magnetive cord being fixed on damping spring one end designs very large with the volume requirement of the inductance coil being positioned at the damping spring other end, to meet the measurement of suspension rod Large travel range, unreasonable on volume.A kind of check weighing sensing device of No. 201410692056.8 patent applications records of the applicant, damping spring is disposed with from top to bottom in damper shell, supporter, spring A, magnetive cord and spring B, wherein supporter is connected in suspension rod lower end, damping spring is on supporter and damper shell between end face, the damper shell of this device because of Action of Gravity Field decline time, the relative displacement of suspension rod and damper shell is discharged by spring A and spring B elastic force and is transferred to magnetive cord, because magnetive cord upper and lower side is respectively by being connected with spring A, spring B, therefore magnetive cord and the mutual vibrations of damper shell can be avoided to collide and friction, ensure measuring accuracy and the reliability of sensing device., when needs damper can utilize air damping to strengthen damping effect, the diameter of the described supporter in damper shell should be fully large, make the gap of supporter side face and damper outer casing inner wall enough little, sufficient air damping is obtained when supporter just can be made to move axially in damper shell, and diameter is fully large, the friction of supporter when damper shell moves between supporter and damper outer casing inner wall is difficult to avoid, this friction causes washtub gravity not accurately to be delivered on damping spring, the linear relationship of actual weight added by the displacement of the relative damper shell of suspension rod and washtub is destroyed, cause sensor measurement inaccurate.
Summary of the invention
Problem to be solved in the utility model be the supporter of the supporting damping spring of its damper of use in washing machine weight sensing device of prior art when washtub Action of Gravity Field moves relative to damper shell and damper shell rub, washtub gravity is caused accurately not to be delivered on damping spring, the displacement making the relative damper shell of suspension rod is destroyed with the linear relationship of the gravity putting on washtub, causes sensor measurement to be forbidden.The utility model provides a kind of sensing device testing contents weight in tub of washing machine for this reason, this sensing device washtub gravity is not directly delivered to damping spring, thus eliminate or essentially eliminate supporter and damper shell and to rub the impact caused, when fully obtaining air damping damping effect, keep measurement result accurately.
For solving the problem, the technical solution adopted in the utility model is provided with the hook A being connected to washing machine box body upper inside wall bight and the hook B being connected to tub of washing machine outer wall bottom, hook B is longitudinally corresponding with hook A, on hook A, extension is connected with suspension rod, hook B is connected with damper through the company's of extension damper shell, supporter is provided with in described damper shell, its special character is that described damper outer casing underpart is built-in with a body, this body upper end is by being connected in below described supporter, described suspension rod bottom is built in damper shell, and suspension rod lower end is positioned at described body bottom, described supporter passes and pine is placed on suspension rod, push up between the upper top of supporter and described damper shell and be provided with damping spring, suspension rod lower end has spring catch platform, on this spring catch platform, top is pressed with sensing spring, damping spring and sensing spring are placed on suspension rod coaxially, and damping spring is positioned at above sensing spring, described body bottom overcoat has inductance coil, body bottom is built-in with the magnetive cord that can in inductance coil move axially corresponding with described inductance coil, this magnetive cord involves in suspension rod lower end.
Preferably the coefficient of elasticity of described sensing spring is greater than the coefficient of elasticity of described damping spring, so that washtub weightening finish, after damping spring is fully compressed, washtub changes in weight causes sensing spring to stretch.
Obtain damping effect for air damping can be made full use of, be connected with stepped ramp type lasso at described damper outer casing underpart, between this stepped ramp type lasso and described body, be provided with sealing ring.So below supporter, form relatively airtight air chamber at damper shell, it is formed together with the air chamber above supporter " having a double meaning air chamber ", strengthen air damping effect, its principle is supporter moves, upper plenum supercharging, below air chamber decompression, pressure differential has obstruction trend to supporter moves; Supporter moves down situation in like manner.Be provided with sealing ring between stepped ramp type lasso and described body, but cover physical efficiency opposing seal circle moves up and down, as piston mobile in plug tube.
Magnetive cord described in the utility model involves and refers to that magnetive cord upper end is connected with suspension rod lower end in suspension rod lower end, when suspension rod is relative to (actual is that damper shell moves down, and suspension rod keeps upper and lower coordination) when damper shell moves, magnetive cord moves.
It also can be provided with spring between suspension rod and magnetive cord that described magnetive cord involves in suspension rod lower end, and this spring upper end is connected in suspension rod lower end, and this lower spring end is connected in magnetive cord.When suspension rod is relative to when damper shell moves, pull magnetive cord moves and have a hysteresis, show in washtub weightening finish process, the so far stage, early stage, described spring was first stretched, and later stage magnetive cord is pulled and moves; So can detect in relatively large weight range ability.
Preferably described body bottom has the neck of radial contraction;
Described body bottom overcoat has inductance coil to refer to, and described neck overcoat has inductance coil;
Described body bottom is built-in with the magnetive cord that can in inductance coil move axially corresponding with described inductance coil and refers to that described neck is built-in with the magnetive cord that can in inductance coil move axially corresponding with described inductance coil.
Body upper end described in the utility model can have the retaining wall inwardly prolonged in footpath, by being connected in below described supporter, described body upper end refers to that this retaining wall of body is by being connected in below supporter, on described spring catch platform, top is pressed with sensing spring and refers to that on spring catch platform, top is pressed with sensing spring, and this sensing spring upper end relies on described retaining wall.
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model is arranged on washing machine;
Fig. 2 is an embodiment structural representation of the utility model sensing device;
Fig. 3 is another embodiment structural representation of the utility model sensing device;
Fig. 4 is the washtub weight of the utility model Fig. 2 device and the change curve of sensors inductance winding inductance quantity;
Fig. 5 is the washtub weight of the utility model Fig. 3 device and the change curve of sensors inductance winding inductance quantity;
Fig. 6 is the enlarged drawing of Fig. 2 device bottom area elliptica.
Mark in figure: 1 outer case, 2 washtubs, 3 hook A, 4 hook B, 5 suspension rods, 6 cushion blocks, 7 dampers, 8 damper shells, 9 supporters, 10 damping springs, 11 bodies, 11-1 neck, 11-2 retaining wall, 12 magnetive cords, 13 sensing springs, 14 inductance coils, 15 lassos, 16 springs, 17 sealing rings.
Detailed description of the invention
Embodiment one
The sensing device of contents weight in test tub of washing machine, a hook A3 is respectively connected with in washing machine box body 1 upper inside wall four bights, four hook B4 are connected with in circumference compartment of terrain, tub of washing machine 2 outer wall bottom, hook B is longitudinally corresponding one by one with hook A, on hook A, extension is connected with suspension rod 5, and it is firm through cushion block 6, hook B is connected with damper 7 by the company's of extension damper shell 8, supporter 9 is provided with in damper shell, damper outer casing underpart is built-in with a body 11, body upper end has the retaining wall 11-2 inwardly prolonged in footpath, this retaining wall is by being connected in below supporter, body bottom has the neck 11-1 of radial contraction, suspension rod 5 bottom is built in damper shell, and suspension rod lower end is positioned at the described neck of body to shrinking the step place formed, described supporter 9 passes and pine is placed on suspension rod, push up between the upper top of supporter and damper shell and be provided with damping spring 10, suspension rod lower end has spring catch platform, on this spring catch platform, top is pressed with sensing spring 13, sensing spring upper end relies on the retaining wall of described body, damping spring and sensing spring are placed on suspension rod coaxially, and damping spring is positioned at above sensing spring, described in body bottom, the neck overcoat of radial contraction has inductance coil 14, and the neck of this radial contraction is built-in with the magnetive cord 12 that can in inductance coil move axially corresponding with inductance coil, and this magnetive cord is connected in suspension rod lower end.
In the utility model, the gravity of washtub puts on damper shell, this gravity makes washtub together with grand under damper shell, upper end hangs the spring catch platform of suspension rod 5 through its lower end being connected in the hook A of washing machine box body and this gravity is passed to sensing spring 13, body 11, supporter 9 and damping spring 10 successively, makes sensing spring and damping spring compression; When not rubbing between supporter 9 and damper shell 8, the gravity of washtub is fully applied on sensing spring and damping spring; When having friction between supporter and shell, the spring catch platform of the elastic force that sensing spring compression produces and suspension rod lower end is applied to the pressure attains equilibrium on sensing spring, and therefore the deflection of sensing spring is not by the impact whether having friction between supporter and shell.The coefficient of elasticity that can be equipped with as sensing spring is greater than the coefficient of elasticity of damping spring, when washtub gravity like this causes sensing spring and damping spring to compress, sensing spring compress variation is less than damping spring compress variation, so that after damping spring is fully compressed, washtub gravity increases Compression alone sensing spring.The coefficient of elasticity of sensing spring designs enough large, can reduce the deflection of sensing spring, thus can reduce the volume of inductance coil.Fig. 4 represents the change curve of washtub weight and sensors inductance winding inductance quantity.
Embodiment two
What this example was different from example is the lasso 15 being connected with stepped ramp type at damper outer casing underpart, the bottom radial contraction of this lasso, the step that radial contraction is formed is combined with the sealing ring 17 of longitudinal section L shape, the cover of sealing circle is connivent in opening's edge under damper shell, and inside sealing ring, front cover corresponds to the outer wall of described body.Other structures are identical with upper example.This routine sensing device can respectively form a damping air chamber in the upper and lower both sides of supporter, obtains better air damping damping effect.
Embodiment three
What this example was different from example two is be provided with spring 16 between suspension rod lower end and magnetive cord, and this spring upper end is connected in suspension rod lower end, and this lower spring end is connected in magnetive cord.Other structures are identical with example two.Washtub gravity makes suspension rod relative to when damper shell moves, and pulls magnetive cord moves to have a hysteresis, and show that in washtub weightening finish process, spring 16 is first stretched, magnetive cord is led on position and moves subsequently; So can detect in relatively large weight range ability.Fig. 5 represents the change curve of washtub weight and sensors inductance winding inductance quantity.
Claims (7)
1. test the sensing device of contents weight in tub of washing machine, there is the hook A (3) being connected to washing machine box body (1) upper inside wall bight and the hook B (4) being connected to tub of washing machine (2) outer wall bottom, hook B is longitudinally corresponding with hook A, on hook A, extension is connected with suspension rod (5), hook B is connected with damper (7) through company's of extension damper shell (8), supporter (9) is provided with in described damper shell, it is characterized in that described damper outer casing underpart is built-in with a body (11), this body upper end is by being connected in below described supporter, described suspension rod bottom is built in damper shell, and suspension rod lower end is positioned at described body bottom, described supporter passes and pine is placed on suspension rod, push up between the upper top of supporter and described damper shell and be provided with damping spring (10), suspension rod lower end has spring catch platform, on this spring catch platform, top is pressed with sensing spring (13), damping spring and sensing spring are placed on suspension rod coaxially, described body bottom overcoat has inductance coil (14), body bottom is built-in with the magnetive cord (12) that can in inductance coil move axially corresponding with described inductance coil, this magnetive cord involves in suspension rod lower end.
2. sensing device as claimed in claim 1, is characterized in that the coefficient of elasticity of described sensing spring is greater than the coefficient of elasticity of described damping spring.
3. sensing device as claimed in claim 1 or 2, damper outer casing underpart described in its feature is connected with stepped ramp type lasso (15), is provided with sealing ring (17) between this stepped ramp type lasso and described body.
4. sensing device as claimed in claim 1 or 2, is characterized in that described magnetive cord involves and refers to that magnetive cord upper end is connected with suspension rod lower end in suspension rod lower end.
5. sensing device as claimed in claim 1 or 2, it is characterized in that described magnetive cord involves and to refer in suspension rod lower end and be provided with spring (16) between suspension rod and magnetive cord, this spring upper end is connected in suspension rod lower end, and this lower spring end is connected in magnetive cord.
6. sensing device as claimed in claim 1 or 2, is characterized in that described body bottom has the neck of radial contraction (11-1);
Described body bottom overcoat has inductance coil to refer to, and described neck overcoat has inductance coil (14);
Described body bottom is built-in with the magnetive cord that can in inductance coil move axially corresponding with described inductance coil and refers to that described neck is built-in with the magnetive cord that can in inductance coil move axially corresponding with described inductance coil.
7. sensing device as claimed in claim 1 or 2, it is characterized in that described body upper end has the retaining wall (11-2) inwardly prolonged in footpath, by being connected in below described supporter, described body upper end refers to that this retaining wall of body is by being connected in below supporter, on described spring catch platform, top is pressed with sensing spring and refers to that on spring catch platform, top is pressed with sensing spring, and this sensing spring upper end relies on described retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032470.6U CN204608414U (en) | 2015-01-17 | 2015-01-17 | The sensing device of contents weight in test tub of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032470.6U CN204608414U (en) | 2015-01-17 | 2015-01-17 | The sensing device of contents weight in test tub of washing machine |
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| Publication Number | Publication Date |
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| CN204608414U true CN204608414U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520032470.6U Withdrawn - After Issue CN204608414U (en) | 2015-01-17 | 2015-01-17 | The sensing device of contents weight in test tub of washing machine |
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| CN (1) | CN204608414U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839354A (en) * | 2015-01-17 | 2016-08-10 | 杭州神林电子有限公司 | Sensing device for testing weight of contents in washing bucket of washing machine |
| WO2017114274A1 (en) * | 2015-12-30 | 2017-07-06 | 合肥海尔洗衣机有限公司 | Vibration damping device having 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 |
-
2015
- 2015-01-17 CN CN201520032470.6U patent/CN204608414U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839354A (en) * | 2015-01-17 | 2016-08-10 | 杭州神林电子有限公司 | Sensing device for testing weight of contents in washing bucket of washing machine |
| CN105839354B (en) * | 2015-01-17 | 2018-01-09 | 杭州神林电子有限公司 | Test the sensing device of tub of washing machine intraluminal interior weight |
| WO2017114274A1 (en) * | 2015-12-30 | 2017-07-06 | 合肥海尔洗衣机有限公司 | Vibration damping device having weighing function and washing machine |
| CN106930044A (en) * | 2015-12-30 | 2017-07-07 | 合肥海尔洗衣机有限公司 | A kind of vibration absorber and washing machine with function of weighing |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20180109 |
|
| AV01 | Patent right actively abandoned |