CN220819269U

CN220819269U - Single-shaft miniature pressing force transducer

Info

Publication number: CN220819269U
Application number: CN202322256447.2U
Authority: CN
Inventors: 熊琳
Original assignee: Changzhou Kunwei Sensing Technology Co ltd
Current assignee: Changzhou Kunwei Sensing Technology Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-04-19
Anticipated expiration: 2033-08-22

Abstract

The utility model relates to the technical field of sensor detection, in particular to a single-shaft miniature pressing force transducer, which comprises: the elastic body is provided with a first body and a second body, the second body is arranged in the first body, and the first body is provided with a column body protruding upwards; the strain gauge is arranged on one surface of the second main body close to the cylinder and comprises a strain sensitive element, a lead wire and a covering layer. In the utility model, the second main body is arranged in the first main body, the first main body is provided with the upward protruding column body, the strain gauge is arranged on the second main body, the strain gauge comprises a sensitive element, a lead wire and a covering layer, when an object to be measured is required to be measured, the object to be measured is placed on the first main body, elastic deformation can be generated when the object to be measured is placed on the first main body, the elastic deformation generated by the first main body can be transmitted to the second main body and transmitted to the strain gauge, the sensitive element reacts and is transmitted through the lead wire, the column body amplifies the elastic deformation, the accuracy of a result is improved, and the performance of the device is improved.

Description

Single-shaft miniature pressing force transducer

Technical Field

The utility model relates to the technical field of sensor detection, in particular to a single-shaft miniature pressing force transducer.

Background

With the rapid development of science and technology in recent years, the application of the sensor is more and more extensive, and the increase of the demands is brought about by higher requirements on the accuracy and durability of the sensor. The sensor is applied to the aspects of life, the most applicable is the mechanical and intelligent manufacturing industry, the application of the sensor can assist the production to a great extent, and particularly, the precision manufacturing, the precision assembly and the like are not involved in the sensor; in addition to being applied to the manufacturing industry, other industries have also been applied to sensors, such as in the medical arts, which can be used to monitor critical information for equipment and patient care; the existing unmanned technique also uses sensors for transportation; in other aspects, sensors are required for electronic scales, electronic devices, and the like.

Although the sensor market in China is developed rapidly, the problems of low precision, low performance, insufficient durability and the like still exist.

In order to solve the problems, a single-shaft miniature pressing force sensor is designed.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of utility model

The utility model provides a single-shaft miniature pressing force transducer, which is used for effectively solving the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a uniaxial micro-scale pressure load cell comprising:

The elastic body is provided with a first body and a second body, the second body is arranged in the first body, and one surface of the first body, on which an object to be measured is placed, is provided with a column body protruding upwards;

The strain gauge is arranged on one surface of the second main body close to the cylinder and comprises a strain sensitive element, a lead wire and a covering layer.

Further, the strain gauge is also provided with 4 resistors of different specifications and 6 wire connection sockets.

Further, 4 of the resistors constitute a wheatstone bridge.

Further, a cable is fixedly arranged on the side face of the second main body, one end of the cable is connected to the second main body, and the other end of the cable is connected with a display instrument.

Further, a cover plate is arranged on the non-object placing surface of the first main body, and the cover plate is of a concave structure.

Further, a gap is provided between the first body and the second body.

Further, a chamfer is arranged at the joint of the upper surface, the lower surface and the side surface of the first main body.

Further, the elastic body is made of alloy steel or stainless steel.

The beneficial effects of the utility model are as follows: the elastic main body comprises a first main body and a second main body, wherein the second main body is arranged in the first main body, an upward protruding column body is arranged on one surface of the first main body, where an object to be measured is placed, the strain gauge is arranged on one surface of the second main body, which is close to the column body, the strain gauge comprises a sensitive element, a lead wire and a covering layer, when the object to be measured is required to be measured, the object to be measured is placed on the surface of the first main body, where the column body is provided with the column body, and elastic deformation is generated when the object to be measured is placed on the first main body, the elastic deformation generated by the first main body is transmitted to the second main body, so that the elastic deformation is transmitted to the strain gauge, the sensitive element reacts at the moment and is transmitted out through the lead wire, the column body of the first main body plays a role of amplifying the elastic deformation degree, the sensitive element and the lead wire of the strain gauge are well protected by the covering layer, the accuracy of a measurement result is improved, and the performance of the whole single-axis miniature pressure force measuring sensor is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic diagram of a uniaxial miniature pressure force transducer

FIG. 2 is a schematic view of the internal structure of FIG. 1

FIG. 3 is a schematic diagram of a strain gauge structure

FIG. 4 is a schematic diagram of a Wheatstone bridge

Reference numerals: 1. an elastic body; 11. a first body; 111. a column; 12. a second body; 2. strain gauges; 21. a strain sensitive element; 22. a lead wire; 23. a cover layer; 24. a resistor; 25. a wiring socket; 3. a cable; 4. and a cover plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 2: a uniaxial micro-scale pressure load cell comprising:

The elastic body 1, the elastic body 1 is provided with a first body 11 and a second body 12, the second body 12 is arranged in the first body 11, and one surface of the first body 11 for placing an object to be tested is provided with a column 111 protruding upwards;

The strain gauge 2, the strain gauge 2 is disposed on a surface of the second body 12 near the column 111, and includes a strain sensitive element 21, a lead 22 and a cover layer 23.

The elastic main body 1 comprises a first main body 11 and a second main body 12, the second main body 12 is arranged in the first main body 11, an upward protruding column 111 is arranged on one surface of the first main body 11, where an object to be measured is placed, the strain gauge 2 is arranged on one surface of the second main body 12, which is close to the column 111, the strain gauge 2 comprises a sensitive element, a lead 22 and a cover layer 23, when the object to be measured is needed to be measured, the object to be measured is placed on the surface of the first main body 11, because the column 111 protrudes upwards, the elastic deformation can be generated when the object to be measured is placed on the first main body 11, the elastic deformation generated by the first main body 11 can be transmitted to the second main body 12 in the interior, so that the elastic deformation is transmitted to the strain gauge 2, at the moment, the sensitive element reacts and is transmitted through the lead 22, the column 111 of the first main body 11 has the effect of amplifying the elastic deformation degree, the cover layer 23 protects the sensitive element and the lead 22 of the strain gauge 2 well, the accuracy of a measurement result is improved, and the performance of the whole uniaxial micro-pressure force measuring sensor is improved.

As shown in fig. 3, the strain gauge 2 is further provided with 4 resistors 24 of different specifications and 6 wire sockets 25.

By arranging 4 resistors 24 with different specifications on the strain gauge 2, when the strain gauge 2 receives pressure generated by elastic deformation, tiny changes can be converted into corresponding resistors 24 to be output, so that the sensitivity is increased; the 6 patch jacks 25 output different data, facilitating later data analysis.

As shown in fig. 4, 4 resistors 24 constitute a wheatstone bridge.

The wheatstone bridge is formed by the 4 resistors 24, the resistance 24 signals generated by the strain gauge 2 are converted into voltage signals to be output, the wheatstone bridge is used for measuring, the problems of power supply, ammeter voltage division, voltmeter current division, excessive lead voltage division and the like can be avoided, relative errors are reduced, the later data are more accurate, and the converted voltage signals are convenient for later data processing.

In this embodiment, the cable 3 is fixedly disposed on the side of the second body 12, and one end of the cable 3 is connected to the second body 12, and the other end is connected to the display apparatus.

The cable 3 is fixedly arranged on the side face of the second main body 12, one end of the cable 3 is connected to the second main body 12, the other end of the cable is connected with a display instrument, the display instrument can clearly display the output voltage signal, and the display instrument can be used for more conveniently analyzing and processing the data.

In this embodiment, the non-object surface of the first body 11 is provided with a cover plate 4, and the cover plate 4 is provided with a concave structure.

By arranging the cover plate 4 on the non-object-placing surface of the first main body 11, the cover plate 4 can play a role of mechanical protection, effectively resist external collision, and simultaneously can protect the internal components of the elastic main body 1 from being polluted by water, dust or other substances, thereby improving the durability of the device; the apron 4 sets up to indent structure, and indent and second main part 12 contact, has compensated the clearance between first main part 11 and the second main part 12, has played the effect of supporting second main part 12 for when measuring the object to be measured, elastic body 1 can not produce the vibration, has improved the stability when detecting.

In the present embodiment, a gap is provided between the first body 11 and the second body 12.

Gaps are arranged between the first main body 11 and the second main body 12, enough space is reserved for deformation of the elastic main body 1, and the reserved space enables the elastic deformation degree of the elastic main body 1 to be more sufficient, so that the force measurement result which is finally subjected to data analysis processing is more accurate.

In the present embodiment, the junction of the upper and lower surfaces and the side surfaces of the first body 11 is provided with chamfers.

The joint of the upper surface, the lower surface and the side surface of the elastic main body 1 is provided with a chamfer, and burrs of the whole device are removed through the arrangement of the chamfer, so that the device is more attractive, and meanwhile, unnecessary damage of sharp corners to a human body can be reduced.

In this embodiment, the material of the elastic body 1 is alloy steel or stainless steel.

The elastic main body 1 is made of high-strength alloy or stainless steel, and the strength, corrosion resistance and mechanical property of the elastic main body 1 are improved, so that the durability of the whole single-shaft micro-pressure force transducer device is improved.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A uniaxial miniature press load cell comprising:

2. The uniaxial miniature press load cell of claim 1, wherein said strain gage is further provided with 4 different gauge resistors and 6 wire sockets.

3. The uniaxial miniature piezo-force transducer of claim 2, wherein 4 of said resistors form a wheatstone bridge.

4. The uniaxial miniature press force transducer of claim 1, wherein a cable is fixedly arranged on the side surface of the second main body, one end of the cable is connected to the second main body, and the other end of the cable is connected to a display instrument.

5. The uniaxial miniature press load cell of claim 1, wherein a cover plate is disposed on a non-object-bearing surface of the first body, the cover plate being configured as a concave structure.

6. The uniaxial miniature press load cell of claim 1, wherein a gap is provided between said first body and said second body.

7. The uniaxial miniature pressing force transducer of claim 1, wherein a chamfer is provided at a junction of the upper and lower surfaces and the side surface of the first body.

8. The uniaxial miniature pressure cell of claim 1 wherein the material of the elastic body is selected from alloy steel or stainless steel.