S-shaped pressure detection force sensor

Abstract

The utility model discloses a kind of S-type pressure detection force sensors, including force-receiving part, the top of force-receiving part is fixedly arranged with strain part, the top of strain part is fixedly arranged with connecting part, the middle part of strain part is equipped with strain bin, the inside of strain bin is fixedly arranged with thin film strain gauge, a kind of S-type pressure detection force sensor of the utility model, this S-type pressure detection force sensor adopts bionic honeycomb material, light in weight, high in strength, good in impact resistance, reduce self weight, reduce the requirement to installation equipment, improve anti-interference ability and service life, and strain can be effectively concentrated in specific area, uniform dispersion stress, avoid the stress concentration problem of traditional structure, integral structure design can eliminate connecting gap and weak link, improve sensor overall strength and reliability, reduce failure risk, adopt high sensitivity thin film strain gauge, can accurately perceive the resistance change caused by strain part tiny deformation, realize the accurate measurement of pressure.

Description

Technical Field

[0001] This utility model relates to the field of S-type pressure detection force sensors, specifically an S-type pressure detection force sensor. Background Technology

[0002] In numerous fields such as industrial automation, aerospace, and automotive manufacturing, accurate measurement of pressure and force is crucial. S-type pressure / force sensors, due to their unique shape and performance advantages, are widely used in these fields. However, traditional S-type pressure / force sensors have many limitations in their structural design, making it difficult to meet the ever-increasing demands for high-precision and high-reliability measurements. The beam structure of traditional S-type pressure / force sensors is typically solid or a simple hollow structure, mainly relying on machining. While this structure is relatively simple to manufacture, it has significant shortcomings in mechanical performance. When the sensor is subjected to external forces, due to the uniformity of the structure, the strain distribution is not uniform. During force transmission, stress concentration inevitably occurs in some areas. Stress concentration not only causes the local stress in these areas to be much greater than the average stress, causing the material to prematurely enter the plastic deformation stage and affecting the sensor's measurement accuracy, but also accelerates material fatigue damage, significantly shortening the sensor's lifespan. Furthermore, traditional sensors often employ a split design, with components assembled via connectors. This connection method introduces gaps and weak points. During long-term use, under the influence of external forces such as vibration and impact, the connection is prone to loosening or even breaking, further increasing the risk of failure.

[0003] To address the aforementioned issues, an S-type pressure sensing force sensor is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an S-type pressure detection force sensor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an S-type pressure detection force sensor, including a force-receiving part;

[0006] A strain gauge is fixedly mounted on the top of the force-bearing part, and a connecting part is fixedly mounted on the top of the strain gauge. A strain chamber is formed in the middle of the strain gauge, and a thin-film strain gauge is fixedly mounted inside the strain chamber. A wire-fixing hole is formed at one corner of the bottom of the force-bearing part, and a connecting cable is fixedly mounted inside the wire-fixing hole. A wire-passing hole is formed in the middle of the connecting part, and threaded mounting holes are formed in the middle of both sides of the connecting part. Both threaded mounting holes are connected to the wire-passing hole. The force-bearing part, strain gauge, and connecting part are an integral structure, and the force-bearing part, strain gauge, and connecting part are all made of biomimetic honeycomb material.

[0007] This S-type pressure sensor uses biomimetic honeycomb material, which is lightweight, high-strength, and has good impact resistance. This reduces its own weight, lowers the requirements for installation equipment, improves anti-interference capabilities and service life, and allows strain to be effectively concentrated in a specific area, evenly distributing force and avoiding the stress concentration problems of traditional structures. The integrated structural design eliminates connection gaps and weak points, improving the overall strength and reliability of the sensor and reducing the risk of failure. It employs a high-sensitivity thin-film strain gauge to accurately sense the resistance changes caused by minute deformations in the strained part, achieving precise pressure measurement. The coordinated design of the first and second strain grooves optimizes the stress transmission path, guiding stress concentration and distribution, allowing the strained part to accurately generate minute deformations corresponding to pressure. Combined with the high-sensitivity thin-film strain gauge, this enables precise pressure measurement. The auxiliary chamfered design guides the installation process, making it smoother and reducing the risk of sensor damage.

[0008] Furthermore, a first strip-shaped strain groove is provided at the connection between the force-bearing part and the strain part, and a second strip-shaped strain groove is provided at the connection between the strain part and the connecting part. The width of the first strip-shaped strain groove and the width of the second strip-shaped strain groove are both 2mm.

[0009] Furthermore, auxiliary chamfers are provided on both sides of the top of the connecting part.

[0010] Furthermore, the diameter of the wire-passing hole is 10mm, and the diameter of each of the two threaded mounting holes is 5mm.

[0011] Furthermore, threaded fixing holes are provided on both sides of the bottom end of the force-bearing part, and the diameter of the two threaded fixing holes is 3.3mm.

[0012] Furthermore, an auxiliary hole with a diameter of 2.2 mm is provided on one side of the strain section.

[0013] Furthermore, the center distance between the two threaded fixing holes is 15mm, and the diameter of the fixing hole is 2.2mm.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This S-type pressure sensor uses biomimetic honeycomb material, which is lightweight, high-strength, and has good impact resistance. This reduces its own weight, lowers the requirements for installation equipment, improves anti-interference ability and service life, and enables strain to be effectively concentrated in a specific area, evenly distributing the force and avoiding the stress concentration problem of traditional structures. The integrated structural design eliminates connection gaps and weak points, improves the overall strength and reliability of the sensor, and reduces the risk of failure. The use of a high-sensitivity thin-film strain gauge can accurately sense the resistance change caused by the minute deformation of the strain section, achieving accurate pressure measurement. The combination of the first and second strip-shaped strain grooves optimizes the stress transmission path, guides stress concentration and distribution, and enables the strain section to accurately generate minute deformations corresponding to the pressure. Combined with the high-sensitivity thin-film strain gauge, accurate pressure measurement is achieved. The auxiliary chamfer setting plays a guiding role during installation, making the installation process smoother and reducing the risk of sensor damage. Attached Figure Description

[0015] Figure 1 This is the first perspective view of the present invention;

[0016] Figure 2 This is a second perspective view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This is the third perspective view of the present invention.

[0019] In the figure: 1. Force-bearing part; 2. Strain part; 3. Connection part; 4. First strip strain groove; 5. Second strip strain groove; 6. Wire passage hole; 7. Threaded mounting hole; 8. Auxiliary chamfer; 9. Wire fixing hole; 10. Connecting cable; 11. Threaded fixing hole; 12. Strain chamber; 13. Thin film strain gauge; 14. Auxiliary hole. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1-4 This utility model provides an S-type pressure detection force sensor, including a force receiving part 1;

[0022] A strain unit 2 is fixedly installed on the top of the force-bearing part 1, and a connecting part 3 is fixedly installed on the top of the strain unit 2. A strain chamber 12 is opened in the middle of the strain unit 2, and a thin film strain gauge 13 is fixedly installed inside the strain chamber 12. A wire fixing hole 9 is opened at one corner of the bottom of the force-bearing part 1, and a connecting cable 10 is fixedly installed inside the wire fixing hole 9. A wire-passing hole 6 is opened in the middle of the connecting part 3, and threaded mounting holes 7 are opened in the middle of both sides of the connecting part 3. Both threaded mounting holes 7 are connected to the wire-passing holes 6. The force-bearing part 1, the strain unit 2 and the connecting part 3 are an integral structure, and the force-bearing part 1, the strain unit 2 and the connecting part 3 are all made of biomimetic honeycomb material.

[0023] This S-type pressure sensor uses biomimetic honeycomb material, which is lightweight, high-strength, and has good impact resistance. It reduces its own weight, lowers the requirements for installation equipment, improves anti-interference ability and service life, and can effectively concentrate strain in a specific area, evenly distributing the force and avoiding the stress concentration problem of traditional structures. The integrated structural design can eliminate connection gaps and weak points, improve the overall strength and reliability of the sensor, and reduce the risk of failure. It uses a high-sensitivity thin-film strain gauge 13, which can accurately sense the resistance change caused by the slight deformation of the strain section 2, and realize accurate pressure measurement.

[0024] See Figure 1-4 As shown, a first strip-shaped strain groove 4 is provided at the connection between the force-bearing part 1 and the strain part 2, and a second strip-shaped strain groove 5 is provided at the connection between the strain part 2 and the connecting part 3. The width of the first strip-shaped strain groove 4 and the width of the second strip-shaped strain groove 5 are both 2mm. Auxiliary chamfers 8 are provided on both sides of the top of the connecting part 3. The diameter of the wire hole 6 is 10mm, and the diameter of the two threaded mounting holes 7 is 5mm.

[0025] The combination of the first strip strain gauge 4 and the second strip strain gauge 5 optimizes the stress transmission path, guides stress concentration and distribution, and enables the strain section 2 to accurately generate minute deformations corresponding to the pressure. Combined with the high-sensitivity thin-film strain gauge 13, it enables accurate pressure measurement. The auxiliary chamfer 8 plays a guiding role during installation, making the installation process smoother and reducing the risk of sensor damage.

[0026] See Figure 1-4 As shown, threaded fixing holes 11 are provided on both sides of the bottom end of the force-bearing part 1. The diameter of the two threaded fixing holes 11 is 3.3mm. An auxiliary hole 14 is provided on one side of the strain part 2. The diameter of the auxiliary hole 14 is 2.2mm. The center distance between the two threaded fixing holes 11 is 15mm. The diameter of the wire fixing hole 9 is 2.2mm.

[0027] Both sides of the bottom end of the force-bearing part 1 are provided with threaded fixing holes 11 with a diameter of 3.3mm, and the center distance between the two threaded fixing holes 11 is 15mm. This design provides an additional fixing method for the sensor. When it is necessary to securely install the sensor on a specific device or structure, it can be fixed by passing two bolts that match the threaded fixing holes 11 through the two threaded fixing holes 11. This double fixing method can enhance the firmness of the sensor installation and effectively prevent the sensor from loosening or shifting due to vibration or external impact in complex working environments, thereby ensuring the accuracy and stability of the measurement results.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An S-type pressure detection force sensor, comprising a force receiving part (1); Its features are: The top of the force-bearing part (1) is fixedly provided with a strain section (2), the top of the strain section (2) is fixedly provided with a connecting part (3), a strain chamber (12) is opened in the middle of the strain section (2), a thin film strain gauge (13) is fixedly provided inside the strain chamber (12), a wire fixing hole (9) is opened at one corner of the bottom end of the force-bearing part (1), a connecting cable (10) is fixedly provided inside the wire fixing hole (9), a wire-passing hole (6) is opened in the middle of the connecting part (3), and threaded mounting holes (7) are opened in the middle of both sides of the connecting part (3). Both threaded mounting holes (7) are connected to the wire-passing hole (6). The force-bearing part (1), the strain section (2) and the connecting part (3) are an integral structure. The force-bearing part (1), the strain section (2) and the connecting part (3) are all made of biomimetic honeycomb material.

2. The S-type pressure sensing force sensor according to claim 1, characterized in that: A first strip-shaped strain groove (4) is provided at the connection between the force-bearing part (1) and the strain part (2), and a second strip-shaped strain groove (5) is provided at the connection between the strain part (2) and the connecting part (3). The width of the first strip-shaped strain groove (4) and the width of the second strip-shaped strain groove (5) are both 2 mm.

3. The S-type pressure sensing force sensor according to claim 1, characterized in that: The top of the connecting part (3) is provided with auxiliary chamfers (8) on both sides.

4. The S-type pressure sensing force sensor according to claim 1, characterized in that: The diameter of the wire hole (6) is 10 mm, and the diameter of the two threaded mounting holes (7) is 5 mm.

5. An S-type pressure sensing force sensor according to claim 1, characterized in that: Both sides of the bottom end of the force-bearing part (1) are provided with threaded fixing holes (11), and the diameter of the two threaded fixing holes (11) is 3.3mm.

6. The S-type pressure sensing force sensor according to claim 1, characterized in that: An auxiliary hole (14) is provided on one side of the strain section (2), and the diameter of the auxiliary hole (14) is 2.2 mm.

7. An S-type pressure sensing force sensor according to claim 5, characterized in that: The center distance between the two threaded fixing holes (11) is 15mm, and the diameter of the fixing hole (9) is 2.2mm.

Images