CN211234649U

CN211234649U - Round weighing sensor

Info

Publication number: CN211234649U
Application number: CN201922496263.7U
Authority: CN
Inventors: 严新民
Original assignee: Guangdong Ruiles Precision Electrical Measurement Technology Co ltd
Current assignee: Guangdong Ruiles Precision Electrical Measurement Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-11
Anticipated expiration: 2029-12-31

Abstract

The application discloses circle formula weighing sensor, it includes: the elastic body is provided with an open arc-shaped structure, and a plurality of supporting legs at equal intervals are arranged on the elastic body in a downward protruding mode from the upper end surface of the elastic body to the lower end surface along the radian direction of the elastic body; and the plurality of resistance strain gauges are uniformly distributed on the upper end surface of the elastic body along the radian direction of the elastic body. This application is through setting the support to have an open-ended convex structure, the structural strength and the elastic property of support have been promoted, it is little to avoid the deformation volume, further strengthen the accuracy of weighing, promote anti overload capacity, avoid the support to take place plastic deformation, can improve the accuracy of weighing, through the steadiness that sets up a plurality of equidistant supporting legss multiplicable supports in the bottom of support, be favorable to accurate weighing, through set up a plurality of resistance strain gauges on the elastomer simultaneously, a plurality of resistance strain gauges have been guaranteed to be in on the coplanar, reducible unbalance loading error of weighing.

Description

Round weighing sensor

Technical Field

The utility model belongs to the technical field of the sensor, especially, relate to a circular weighing sensor.

Background

The sensor is a detection device which can sense the measured information and convert the sensed information into an electric signal or other information in a required form according to a certain rule and output the electric signal or the information. Weighing sensor is one of them kind of sensor, mainly used for detecting the weight of waiting to weigh the article, weighing sensor generally includes the elastomer and sets up the resistance strain meter on the elastomer, when the elastomer pressurized takes place elastic deformation, thereby the deformation volume that the resistance strain meter can respond to the elastomer detects the weight of the object that awaits measuring, weighing sensor's application range is wide, can install on common article in the life, but present weighing sensor does not optimize its shape structure, the ubiquitous anti-overload capacity is poor, the accuracy of weighing is poor, the big problem of unbalance loading error.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to overcome the above insufficiency, the utility model aims to provide a circular weighing sensor to it is poor to solve present weighing sensor anti overload ability, and the accuracy of weighing is poor, and the technical problem that the unbalance loading error is big.

(II) technical scheme

In order to achieve the purpose, the technical scheme provided by the application is as follows:

a round load cell, comprising:

the elastic body is provided with an open arc-shaped structure, and a plurality of supporting legs at equal intervals are arranged on the elastic body in a downward protruding mode from the upper end surface of the elastic body to the lower end surface along the radian direction of the elastic body;

the resistance strain gauges are uniformly distributed on the upper end face of the elastic body along the radian direction of the elastic body and used for sensing the deformation quantity of the elastic body after the object to be weighed is placed on the elastic body so as to detect the weight of the object to be weighed.

Further, the radian formed by two adjacent supporting feet is 45-50 degrees.

Further, the supporting legs are four.

Furthermore, the cross section of the supporting foot is of a triangular structure.

Further, the thickness of the elastomer is 2.5-3.2 mm.

Further, a plurality of fixing holes are formed in the elastic body along the radian direction of the elastic body, and external fixing pieces penetrate through the fixing holes to fix the elastic body to the outside.

Further, the elastic body is a metal member.

Borrow by above technical scheme, the beneficial effect of this application lies in: the round weighing sensor can reduce the weighing error and improve the weighing accuracy by arranging the bracket into an arc structure with an opening, and the bracket with the arc structure is matched with the pressure cooker and the electric cooker in shape, moreover, the structural strength and the elastic performance of the bracket with the opening arc-shaped structure are greatly improved, the deformation amount is small, the accuracy is further enhanced, because the elastomer body has better elastic property, the support can bear the heavier weighing article of heavier bearing weight and does not take place plastic deformation, has increased bearing capacity, and further, the bottom of support sets up the stationarity of a plurality of equidistant supporting legss multiplicable supports, is favorable to the accuracy to weigh, sets up a plurality of resistance strain gauges simultaneously on the support of this application, has guaranteed that a plurality of resistance strain gauges are in the coplanar, reducible unbalance loading error of weighing.

Drawings

Fig. 1 is a schematic front structural view of a round weighing sensor of the present invention;

fig. 2 is a schematic diagram of a reverse structure of the round weighing sensor of the present invention;

fig. 3 is a schematic side view of the round weighing sensor of the present invention;

FIG. 4 is a schematic view of a prior art load cell;

reference numerals:

1: an elastomer; 101: a fixing hole; 102: supporting legs; 2: a resistance strain gauge; 3: the beam is mounted.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The utility model provides a pair of round weighing sensor, it includes:

the elastic body 1 is provided with an open arc-shaped structure, and a plurality of supporting legs 102 at equal intervals are arranged on the elastic body 1 in a downward protruding mode from the upper end surface of the elastic body 1 to the lower end surface along the radian direction of the elastic body 1;

the resistance strain gauges are uniformly distributed on the upper end face of the elastic body 1 along the radian direction of the elastic body 1 and used for sensing the deformation quantity of the elastic body 1 after an object to be weighed is placed, so that the weight of the object to be weighed is detected.

The application discloses sensor mainly uses in intelligent household electrical appliances, for example intelligent pressure cooker, electric rice cooker of intelligence etc. can acquire current pressure cooker, the weight of food among the electric rice cooker of intelligence in real time through the sensor. Referring to fig. 4, a conventional elastic body 1 is a field-type structure, a resistance strain gauge 2 is mounted on a middle deformation beam, fixing holes 101 are formed in mounting beams 3 on both sides of the deformation beam for fixing a mounting seat, and the resistance strain gauge 2 detects the weight of an object to be weighed by detecting the deformation amount of the deformation beam, so that, for the conventional weighing sensor, the structural strength difference between the deformation beam and the mounting beam 3 is hard to bear large pressure, resulting in poor overload resistance of the sensor, the deformation beam and the mounting beam 3 are easy to be plastically deformed when subjected to large pressure, and are hard to return to the original state, resulting in poor weighing accuracy and incapability of accurate load bearing, and the conventional sensor is provided with only one resistance strain gauge 2, and a plurality of resistance strain gauges 2 are required to cooperate with each other during normal load bearing, so that, if install current this kind of weighing sensor, need treat a plurality of sensors of installation simultaneously under the bearing thing side member, it is big because the depth of parallelism between a plurality of sensors is inconsistent to lead to the unbalance loading error to install a plurality of sensors simultaneously, can influence the accuracy of bearing equally to, current pressure cooker such as field type structure and round bottom, the pot bottom shape of electric rice cooker does not match, and the accuracy of weighing also can receive the influence.

Referring to fig. 1-3, to solve the above problems, the present application sets the bracket to have an open arc structure, the bracket of the arc structure is matched with the pressure cooker and the electric cooker in shape, so as to reduce the weighing error and improve the weighing accuracy, and the bracket of the open arc structure has greatly improved structural strength and elastic performance, so as to be not easy to generate plastic deformation, further enhance the weighing accuracy, because the elastic body 1 has better structural strength and elastic performance, the bracket can bear heavy objects without generating plastic deformation, so as to increase the bearing capacity, further, the bottom of the bracket is simultaneously provided with a plurality of equally spaced supporting legs 102, so as to increase the stability of the bracket, which is beneficial to accurate weighing, the bracket of the present application is simultaneously provided with a plurality of resistance strain gauges, so as to ensure that the plurality of resistance strain gauges are on the same plane, the unbalance loading error of weighing can be reduced.

Specifically, each resistance strain gauge is connected with a lead, one end of the lead is connected with the resistance strain gauge 2, and the other end of the lead is connected with the display module or the sending module, so that the sensing signal of the resistance strain gauge 2 is transmitted to the display module or the sending module to be displayed or sent.

Preferably, in a specific embodiment, the elastic body 1 is provided with four supporting feet 102, and the arc angle a between adjacent supporting feet 102 is 45-50 degrees, so that the elastic body 1 can be placed more stably, the pressure can be uniformly dispersed on the whole elastic body 1, and the weighing is more accurate.

Preferably, the cross section of the supporting foot 102 is a triangular structure, and the stability of the supporting foot 102 with the triangular structure is high, so that the measurement accuracy can be further improved.

Preferably, multiple tests show that the thickness d of the elastic body 1 is set to be 2.5-3.2mm, so that the strength of the support frame can be enhanced, the elastic body 1 is prevented from being subjected to plastic deformation, and the weighing accuracy can be improved.

Specifically, referring to fig. 1 and 2, a plurality of fixing holes 101 are formed in the elastic body 1 along the arc direction, and the fixing holes 101 are used for external fixing members, such as screws, to penetrate therethrough so as to fix the elastic body 1 to the outside.

Optionally, the elastic body 1 is a metal piece, and the metal piece has the characteristics of wear resistance and easiness in processing, so that the maintenance cost can be reduced, and the processing efficiency can be improved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A round load cell, comprising:

the elastic body is provided with an open arc-shaped structure, and a plurality of supporting legs at equal intervals are formed on the elastic body in a downward protruding mode from the upper end surface of the elastic body to the lower end surface along the radian direction of the elastic body;

the resistance strain gauges are uniformly distributed on the upper end face of the elastic body along the radian direction of the elastic body and are used for sensing the deformation amount of the elastic body after an object to be weighed is placed on the elastic body, so that the weight of the object to be weighed is detected.

2. The round load cell according to claim 1, wherein the arc degree formed by two adjacent support feet is 45-50 degrees.

3. The round load cell according to claim 2, wherein the number of the support feet is four.

4. The round load cell of claim 3, wherein said support feet are triangular in cross-section.

5. The round load cell of claim 4 wherein said elastomer has a thickness of 2.5-3.2 mm.

6. The round load cell according to claim 5, wherein said elastic body is provided with a plurality of fixing holes along its arc direction for external fixing members to penetrate therethrough to fix said elastic body to the outside.

7. The round load cell according to any one of claims 1 to 6, wherein said elastic body is a metal member.