CN218916366U

CN218916366U - S-shaped sensor with uniform strain

Info

Publication number: CN218916366U
Application number: CN202222219594.8U
Authority: CN
Inventors: 孙昊辰; 高辉; 姚俊
Original assignee: Quanli Sensor Technology Nanjing Co ltd
Current assignee: Quanli Sensor Technology Nanjing Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-04-25
Anticipated expiration: 2032-08-23

Abstract

The utility model relates to the technical field of sensors, in particular to an S-shaped sensor with uniform strain, which comprises an elastomer, wherein the elastomer is of an S-shaped structure, hexagonal blind holes with the depth of thirteen millimeters are formed in the middle positions of two S-shaped surfaces of the elastomer, two side edges of each hexagonal blind hole are vertically distributed and have the length of twelve millimeters, the lengths of the other four sides of each hexagonal blind hole are consistent and are ten millimeters, and the included angle between the two twelve millimeter edges of each hexagonal blind hole and the two adjacent sides of each hexagonal blind hole is one hundred and zero octadegrees. By moving the over-plug into the outer region, the resulting additional bending stress is removed. By the R-angle design, the extra stress due to stress concentration is removed. Thereby achieving the purpose of improving the measuring precision of the sensor.

Description

S-shaped sensor with uniform strain

Technical Field

The utility model relates to the technical field of sensors, in particular to an S-shaped sensor with uniform strain.

Background

The sensor is a detecting device, which can sense the measured information and convert the sensed information into electric signals or other information output in the required form according to a certain rule, so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The characteristics of the sensor include: microminiaturization, digitization, intellectualization, multifunction, systemization, networking. The method is a primary link for realizing automatic detection and automatic control. The existence and development of the sensor can lead the object to have sense organs such as touch sense, taste sense, smell sense and the like, and lead the object to be slowly activated. Generally, the basic sensing functions of the sensor are classified into ten categories of thermosensitive elements, photosensitive elements, gas-sensitive elements, force-sensitive elements, magnetic-sensitive elements, humidity-sensitive elements, acoustic-sensitive elements, radiation-sensitive elements, color-sensitive elements, taste-sensitive elements and the like.

In the prior art, the following problems exist:

the design of the deformation part (strain foil-attached area) of the sensor is the most central part of the design of the sensor, and the quality of the design directly determines the performance of several key parameters of the sensor such as linearity and hysteresis. The current design of sensing areas for wide-range S-type and shear beam sensors generally takes two forms: one is a square blind hole and the other is a circular (shown in fig. 1) blind hole, thereby forming an i-beam shape that the sensing region should have. Taking a round blind hole as an example, by analyzing the existing design with finite elements, it can be seen that the strain distribution in the deformed portion (strain gage region) is very non-uniform. It can have a detrimental effect on the performance of the product, including linearity and hysteresis.

Disclosure of Invention

The utility model aims to provide an S-shaped sensor with uniform strain, so as to solve the problems in the background technology.

The technical scheme of the utility model is as follows: the utility model provides a S type sensor that strain is even, includes the elastomer, the elastomer is S-shaped structure, the hexagon blind hole that the degree of depth is thirteen millimeters has all been seted up to the intermediate position of two S-shaped faces of elastomer, the both sides limit vertical distribution and the twelve millimeters of length of hexagon blind hole, the other four sides length of hexagon blind hole is unanimous and is ten millimeters, the both sides twelve millimeters limit in both sides of hexagon blind hole and its adjacent both sides form the contained angle and be one hundred and eight degrees, two ten millimeter limit formation contained angles in the bottom and the top of hexagon blind hole are one hundred and forty four degrees, the equal fillet transition in both sides that the hexagon blind hole is adjacent, and the diameter of fillet is the millimeter.

Preferably, two vertically distributed threaded holes are formed in one side positions of the two S-shaped surfaces of the elastic body, a protecting cover is arranged on the S-shaped surface of the elastic body, two vertically distributed positioning holes are formed in the outer wall of the protecting cover, the two positioning holes are aligned with the two threaded holes, fixing screws are connected with the inner walls of the threaded holes through threads, and pass through the positioning holes to fix the protecting cover on the elastic body.

Preferably, an inserting port is formed in the middle of the outer wall of one side of the elastic body, a cable connector is mounted on the inner wall of one side of the inserting port, and a cable is mounted in the cable connector.

The utility model provides an S-shaped sensor with uniform strain through improvement, and compared with the prior art, the S-shaped sensor has the following improvement and advantages:

according to the utility model, the induction area is designed to be hexagonal, so that the influence of other shearing stress on the structure can be removed by adjusting the angle of the hexagon. Removing the generated extra bending stress by moving the through-plug interface to the outer area of the web plate of the I-beam; by the R-angle design, the extra stress due to stress concentration is removed. Thereby achieving the purpose of improving the measuring precision of the sensor; after improvement, the strain distribution becomes very uniform compared to the original design.

Drawings

The utility model is further explained below with reference to the drawings and examples:

FIG. 1 is a front view of a prior art circular blind hole sensor elastomer;

FIG. 2 is an overall perspective view of the present utility model

FIG. 3 is a perspective view of an elastomer of the present utility model

FIG. 4 is a three-view of the present utility model

Fig. 5 is a front view of an elastomer of the present utility model.

Reference numerals illustrate:

1. an elastomer; 11. hexagonal blind holes; 12. an interface; 2. a protective cover; 3. a fixing screw; 4. a cable; 5. a cable joint.

Detailed Description

The following detailed description of the present utility model clearly and fully describes the technical solutions of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides an S-shaped sensor with uniform strain through improvement, and the technical scheme of the utility model is as follows:

as shown in fig. 1 to 5, an S-type sensor with uniform strain includes an elastic body 1, the elastic body 1 is improved in view of the prior art, detailed dimensions are not described herein, and the elastic body 1 is made of metal;

the elastic body 1 is S-shaped structure, the hexagon blind hole 11 that the degree of depth is thirteen millimeters has all been seted up to the intermediate position of two S-shaped faces of elastic body 1, the both sides limit vertical distribution and the twelve millimeters of length of hexagon blind hole 11, the other four sides length of hexagon blind hole 11 is unanimous and all is ten millimeters, the both sides twelve millimeter limit of hexagon blind hole 11 forms the contained angle with its adjacent both sides and is one hundred and zero octagon, two ten millimeter limit formation contained angles in the bottom and the top of hexagon blind hole 11 are one hundred and forty four degrees, and the equal fillet transition in both sides that hexagon blind hole 11 is adjacent, and the diameter of fillet is 4 millimeters.

Further, two vertically distributed threaded holes are formed in one side of two S-shaped surfaces of the elastic body 1, a protecting cover 2 is arranged on the S-shaped surface of the elastic body 1, two vertically distributed positioning holes are formed in the outer wall of the protecting cover 2, the two positioning holes are aligned with the two threaded holes, fixing screws 3 are connected with the inner walls of the threaded holes through threads, the fixing screws 3 penetrate through the positioning holes to fix the protecting cover 2 on the elastic body 1, and the protecting cover 2 is used for protecting blind holes and preventing dust from entering.

Further, an inserting port 12 is formed in the middle of the outer wall of one side of the elastic body 1, a cable connector 5 is mounted on the inner wall of one side of the inserting port 12, and a cable 4 is mounted in the cable connector 5.

Working principle: by adopting the hexagonal design for the induction area, the influence of other shearing stress on the structure can be removed by adjusting the angle of the hexagon; by moving the access opening 12 to the outer region, the additional bending stresses that are created are removed. By the R-angle design, the extra stress due to stress concentration is removed. Thereby achieving the purpose of improving the measuring precision of the sensor; after improvement, the strain distribution becomes very uniform compared to the original design.

Claims

1. An S-type sensor with uniform strain, which is characterized in that: the novel elastic body comprises an elastic body (1), wherein the elastic body (1) is of an S-shaped structure, and hexagonal blind holes (11) with the depth of thirteen millimeters are formed in the middle positions of two S-shaped surfaces of the elastic body (1).

2. A uniformly strained S-type sensor in accordance with claim 1, wherein: the two sides of the hexagonal blind hole (11) are vertically distributed and have twelve millimeters of length, the lengths of the other four sides of the hexagonal blind hole (11) are consistent and are ten millimeters, the two sides of the hexagonal blind hole (11) and the two adjacent sides form an included angle of one hundred and eight degrees, and the two adjacent ten millimeter sides at the bottom and the top of the hexagonal blind hole (11) form an included angle of one hundred and forty four degrees.

3. A uniformly strained S-type sensor in accordance with claim 2, wherein: the two adjacent sides of the hexagonal blind hole (11) are in round corner transition, and the diameter of the round corner is 4 mm.

4. A uniformly strained S-type sensor in accordance with claim 1, wherein: two vertically distributed threaded holes are formed in one side positions of two S-shaped surfaces of the elastic body (1), a protecting cover (2) is arranged on the S-shaped surface of the elastic body (1), two vertically distributed positioning holes are formed in the outer wall of the protecting cover (2), the two positioning holes are aligned with the two threaded holes, fixing screws (3) are connected to the inner walls of the threaded holes through threads, and the fixing screws (3) penetrate through the positioning holes to fix the protecting cover (2) on the elastic body (1).

5. A uniformly strained S-type sensor in accordance with claim 1, wherein: an inserting port (12) is formed in the middle of the outer wall of one side of the elastic body (1), a cable connector (5) is mounted on the inner wall of one side of the inserting port (12), and a cable (4) is mounted in the cable connector (5).