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Sensing device for testing the weight of contents in the washing tub of a washing machine

A sensor device and washing machine technology, applied in washing devices, other washing machines, textiles and papermaking, etc., can solve the problems such as the inability of the gravity of the washing tub to accurately transmit the shock-absorbing spring, the inaccurate measurement of the sensor, and the destruction of the linear relationship of the displacement of the boom.

Active Publication Date: 2018-01-09
HANGZHOU KAMBAYASHI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is that the supporting body of the shock absorber of the prior art weight sensing device for washing machine, which supports the shock absorber spring, rubs against the shock absorber shell when the gravity of the washing tub moves relative to the shock absorber shell, causing The gravity of the washing bucket cannot be accurately transmitted to the shock absorber spring, so that the linear relationship between the displacement of the boom relative to the shock absorber shell and the gravity applied to the washing bucket is destroyed, resulting in inaccurate measurement of the sensor

Method used

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  • Sensing device for testing the weight of contents in the washing tub of a washing machine
  • Sensing device for testing the weight of contents in the washing tub of a washing machine
  • Sensing device for testing the weight of contents in the washing tub of a washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The sensing device for testing the weight of the contents in the washing machine washing tub is connected with a hook A3 at each of the four upper corners of the inner wall of the washing machine outer box 1, and is connected with four hooks B4 at circumferential intervals at the lower part of the outer wall of the washing machine washing tub 2. B corresponds to the hook A one by one longitudinally. The hook A is connected with a suspender 5 and is stabilized by a pad 6. The hook B is connected with a shock absorber 7 through a shock absorber shell 8, and the shock absorber shell is set There is a support body 9, and a set body 11 is built in the lower part of the shock absorber shell. The upper end of the cover body has a radially inwardly extending retaining wall 11-2. Neck 11-1, the lower part of the suspender 5 is built into the shock absorber housing, and the lower end of the suspender is located at the step formed by the neck contraction of the sleeve body, the sup...

Embodiment 2

[0025] This example differs from the previous example in that a stepped ferrule 15 is attached to the lower part of the shock absorber shell, the lower part of the ferrule shrinks radially, and a longitudinal section L-shaped sealing ring 17 is fitted on the step formed by the radial shrinkage. The upper cover of the sealing ring is close to the lower edge of the shock absorber housing, and the inner cover of the sealing ring corresponds to the outer wall of the casing. Other constructions are the same as the above example. In this example, the sensing device can form a shock-absorbing air chamber on the upper and lower sides of the supporting body, so as to obtain better air damping and shock-absorbing effect.

Embodiment 3

[0027] This example is different from example two in that a spring 16 is arranged between the lower end of the suspension rod and the magnetic iron core, the upper end of the spring is connected to the lower end of the suspension rod, and the lower end of the spring is connected to the magnetic iron core. Other structures are the same as in Example 2. When the gravity of the washing bucket makes the suspender move up relative to the shock absorber shell, there is a hysteresis phenomenon when pulling the magnetic iron core upward, which is manifested in the process of increasing the weight of the washing bucket, the spring 16 is stretched first, and then the magnetic iron core is pulled Move up; so that it can be detected in a relatively large weight range. Figure 5 It shows the change curve between the weight of the washing bucket and the inductance of the sensor inductance coil.

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Abstract

The sensing device for accurately measuring the weight of the content in the washing machine washing tub has a hook A connected to the upper corner of the inner wall of the outer box of the washing machine and a hook B connected to the lower part of the outer wall of the washing machine washing tub. The hook B corresponds to the hook A in the longitudinal direction. A suspender is connected to the hook A, and a shock absorber is connected to the hook B through the shock absorber shell. The shock absorber shell is provided with a support body, and a sleeve is built in the lower part of the shock absorber shell. Below the body, the lower end of the suspender is located at the lower part of the casing. The support body passes through and is loosely sleeved on the suspender. A shock absorbing spring is provided between the support body and the upper top of the shock absorber shell. There is a sensor spring on the top of the block, and the shock absorbing spring and the sensor spring are coaxially sleeved on the boom. The lower end of the sleeve is covered with an inductance coil, and a magnetic iron core is built in. The magnetic iron core is implicated in the lower end of the boom. . The invention is used for detecting the weight of the contents in the washing bucket of the washing machine.

Description

technical field [0001] The invention relates to a sensing device for a washing machine, in particular to a sensing device for testing the weight of content in a washing tub of a washing machine. Background technique [0002] The washing machine needs to sense the weight of the washing load when washing, and it needs to sense the amount of water inflow when it is in the water. At present, the initial rotation of the motor is generally used to drive the washing load to rotate, and the weight of the washing load can be vaguely judged by detecting the time when the pulsator stops after the motor stops. This method has low measurement accuracy, which may lead to misjudgment, resulting in waste of washing water resources or unclean washing. Japanese Patent Application No. 2001-120885 discloses a weight sensing device for a washing machine. A weight sensor is installed on the suspension rod between the washing machine cabinet and the outer tub, and the deformation of the spring is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F39/00D06F37/24
Inventor 竺建军邓睿
Owner HANGZHOU KAMBAYASHI ELECTRONICS