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Dual-step double-precision weighing sensor

A load cell, double-precision technology, applied in the field of load cell structure design, can solve the problems of use, large error, and inability to be used as a weight scale.

Inactive Publication Date: 2016-09-14
申俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The weight electronic scales currently on the market are mainly composed of a loading board, a display screen, an adjustment button, a power module and a load cell for supporting the loading board. When the weight of the loaded object exceeds the preset value, the display screen will start to display the value. The preset value is generally 5 kg; in addition, the maximum range of this kind of weight electronic scale is generally 180 kg, and the accuracy value is only 100 grams. The error is large. Therefore, this traditional weight electronic scale can basically not be used for other purposes except for weighing, especially it cannot be used as a kitchen electronic scale.
However, the existing kitchen electronic scales have an accuracy of 1 gram or even less, but their range generally does not exceed 10 kilograms, so they cannot be used as weighing scales.

Method used

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  • Dual-step double-precision weighing sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment is a double-stage double-precision load cell, see Figure 1 to Figure 6 As shown, it includes a mounting base 1 , a first precision load cell 2 , a second precision load cell 3 , a support foot 4 and an elastic support 5 .

[0038] The mounting seat is provided with a mounting plate portion 11 and a force guiding support portion 12 for transmitting the pressure received by itself to the mounting plate portion; an elastic support member, a first precision load cell, a mounting plate portion, and a second precision weighing The sensor and supporting feet are crimped and set in sequence.

[0039] The installation board part is arranged horizontally, the first card holder is arranged on the top wall of the installation board part, and the second card holder is arranged on the bottom wall. The existence of the first deck and the second deck can make the installation operation of the first precision load cell and the second precision load cell faster and more...

Embodiment 2

[0061] This embodiment is basically the same as Embodiment 1, the difference is: see Figure 7 to Figure 8 As shown, this embodiment also includes an adjustment mechanism 6 for adjusting the height of the elastic support; the outer peripheral wall of the upper support is provided with a convex stopper 513, and the outer peripheral wall of the force guiding support is provided with an external thread area 122; the adjustment mechanism includes an adjustment gland 61 and an elastic gasket 62; the upper end of the adjustment gland is provided with a ring-shaped anti-off crimping part 611, and the inner wall of the lower end is provided with an internal thread adapted to the external thread area of ​​the force guiding support part Zone 612, the middle end is provided with a crimping surface 613; through the crimping surface, the adjusting gland crimps the elastic gasket on the top of the force-guiding support part, and the anti-off crimping part is sleeved on the upper support memb...

Embodiment 3

[0065] This embodiment is basically the same as Embodiment 2, the difference is: see Figure 9 to Figure 10 As shown, a static contact 123 is provided on the top of the force guiding support part, and a moving contact 514 adapted to the static contact is provided on the force guiding crimping part of the upper support; when the force guiding crimping part is crimped on the guide When it is on the force supporting part, the moving contact is crimped and arranged on the static contact, and the two realize electrical connection.

[0066] In practice, when the moving contact and the static contact are in electrical contact, an electrical signal is generated to the connected external central control circuit. When the central control circuit receives the signal, the second precision load cell measurement is displayed on the display When the central control circuit does not receive the signal, the data measured by the first precision load cell will be displayed on the display screen;...

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Abstract

The invention discloses a dual-step double-precision weighing sensor comprising a mounting seat, a first precision weighing sensor, a second precision weighing sensor, supporting legs, and an elastic support element. The mounting seat is provided with a mounting plate part and a guiding and supporting part for transmitting pressures to the mounting plate part; and the elastic supporting element, the first precision weighing sensor, the mounting plate part, the second precision weighing sensor, and the supporting legs are arranged successively in a pressing mode. The elastic supporting element consists of an upper support element, a spring, and a lower support element; the top of the spring is abutted against the upper support element and the bottom of the spring is abutted against the lower support element; and the lower support element is arranged on the first precision weighing sensor in a pressing mode. A guiding pressing part is arranged on the bottom wall of the upper support element; and the guiding pressing part is higher than the top of a guiding supporting part in a free state. When a force applied on the upper support element reaches a preset degree, the guiding pressing part moves down and then presses the guiding supporting part. The weighing sensor has the continuous dual-step ranges and has different precision values in ranges at all steps.

Description

technical field [0001] The invention belongs to the technical field of weighing sensor structure design, and in particular relates to a double-stage double-precision weighing sensor. Background technique [0002] The weight electronic scales currently on the market are mainly composed of a loading board, a display screen, an adjustment button, a power module and a load cell for supporting the loading board. When the weight of the loaded object exceeds the preset value, the display screen will start to display the value. The preset value is generally 5 kg; in addition, the maximum range of this kind of weight electronic scale is generally 180 kg, and the accuracy value is only 100 grams. The error is large. Therefore, this traditional weight electronic scale can not be used for other purposes except weighing the body on weekdays, especially it cannot be used as a kitchen electronic scale. And existing kitchen electronic scale, its precision value can reach 1 gram even smalle...

Claims

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Application Information

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IPC IPC(8): G01G19/44G01G19/62
CPCG01G19/44G01G19/62
Inventor 申俊
Owner 申俊
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