Tension sensor with self-limiting protection
By introducing limiting grooves and bump structures into the tension sensor, combined with a protective baffle and sealing layer, the self-protection problem of the sensor in overload conditions is solved, ensuring stable sensor function and easy maintenance.
Patent Information
- Application Number
- CN202322237711.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-21
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2033-08-21
AI Technical Summary
Existing S-shaped pressure and tension sensors are prone to exceeding their elastic limit when the tension or pressure is too large, resulting in irreversible deformation, loss of function, and lack of self-protection properties.
A tension sensor with limit protection is designed. The limit groove and limit bump structure are used to limit the deformation of the upper and lower elastic flaps. Combined with the protective baffle and dustproof sealing layer, excessive deformation is prevented to achieve self-protection.
It effectively prevents damage to the elastic piece caused by excessive tension or pressure, maintains stable sensor function, facilitates maintenance, and extends service life.
Smart Images
Figure CN223449373U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sensor technical field, concretely relates to a tension sensor with self -limiting protection. BACKGROUND
[0002] The tension sensor is a kind of device that is widely used in industrial weighing system, platform scale, electronic scale, hook scale, batching scale and other force measuring occasions, and it is with the elastic body as the intermediary, the resistance of the resistance sheet on the both sides of the sensor is changed by the force, and then the corresponding circuit is converted into electrical signal, so that the following control is realized, and it has the advantages of high precision, wide measuring range, long service life, simple structure, good frequency response characteristics and the like. UTILITY MODEL CONTENT
[0003] The utility model discloses a tension sensor with self-limiting protection, which solves the problems in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme: a tension sensor with self-limiting protection, comprising a sensor body, a circuit board and a cable, one end of the sensor body is provided with an upper elastic tab, the other end is provided with a lower elastic tab, a circuit mounting groove is arranged at the middle position in the sensor body, the circuit board is located in the circuit mounting groove and is fixed in the circuit mounting groove through a dustproof sealing layer, the circuit board is in communication with the cable on one side of the sensor body, one end of the upper elastic tab is integrally made with the sensor body, the other end is provided with a limiting protrusion, the sensor body is provided with a limiting groove corresponding to the limiting protrusion, the limiting protrusion is located in the limiting groove and has a gap, and the structure of the lower elastic tab and the sensor body is consistent with the structure of the upper elastic tab and the sensor body.
[0005] Further, the upper elastic tab and the lower elastic tab are respectively provided with connecting through holes, and the opening positions of the connecting through holes are symmetrical to each other.
[0006] Further, the circuit mounting groove on the sensor body is hollow, the sensor body is respectively provided with a protective baffle on both sides corresponding to the circuit mounting groove through fastening screw, one side of the sensor body is provided with a fixing through hole, and the fastening screw is fixed through the fixing through hole.
[0007] Further, the internal profile of the limiting groove is consistent with the external profile of the limiting protrusion, and the turning points are not less than two and are all right-angle turning points.
[0008] Further, the dustproof sealing layer is sealing glue or sealing resin, which is poured on the circuit board in the circuit mounting groove.
[0009] Further, the circuit board includes but is not limited to one of 1 / 4 bridge, half-bridge and full-bridge circuit structures.
[0010] Compared with the prior art, the tension sensor with self-limiting protection has the functions of preventing excessive deformation caused by excessive tension, realizing self-protection and avoiding loss of sensing tension and pressure, by adopting the structure of the limiting groove and the limiting protrusion, so that the upper elastic flap and the lower elastic flap have the function of limiting protection respectively. BRIEF DESCRIPTION OF DRAWINGS
[0011] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application, in the drawings:
[0012] Figure 1 is a structural schematic view of the present application;
[0013] Figure 2 is a structural schematic view of the present application.
[0014] In the figure: 1, sensor body; 2, upper elastic flap; 3, lower elastic flap; 4, circuit mounting groove; 5, circuit board; 6, dustproof sealing layer; 7, cable; 8, fixed through hole; 9, connecting through hole; 10, limiting groove; 11, limiting protrusion; 12, protective baffle; 13, fastening screw. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0016] Please refer to Figure 1 , 2As shown, the utility model provides a technical scheme: a tension sensor with self -limiting protection, including sensor body 1, circuit board 5 and cable 7, one end of sensor body 1 is equipped with upper elastic flap 2, and the other end is equipped with lower elastic flap 3, the middle position in sensor body 1 is equipped with circuit mounting groove 4, and circuit board 5 is located in circuit mounting groove 4, and is fixed in circuit mounting groove 4 through dustproof sealing layer 6, and circuit board 5 is communicated with the cable 7 of one side of sensor body 1, one end of upper elastic flap 2 is integrally made with sensor body 1, and the other end is equipped with limiting lug 11, and the limiting lug 11 is located in the limiting recess 10, and there is a gap, and the structure of lower elastic flap 3 and sensor body 1 is consistent with the structure of upper elastic flap 2 and sensor body 1.
[0017] Further, the upper elastic flap 2 and the lower elastic flap 3 are respectively provided with a connecting through hole 9, and the opening positions of the connecting through holes 9 are symmetrical to each other.
[0018] Further, the circuit mounting groove 4 on the sensor body 1 is hollow, and the sensor body 1 is assembled with a protective baffle 12 on both sides corresponding to the circuit mounting groove 4 through a fastening screw 13, and a fixing through hole 8 is arranged on one side of the sensor body 1 corresponding to the cable 7, and the fastening screw 13 is fixed through the fixing through hole 8.
[0019] Further, the internal contour of the limiting recess 10 is consistent with the external contour shape of the limiting lug 11, and the turning points are not less than two, and are all right-angle turning points.
[0020] Further, the dustproof sealing layer 6 is sealing glue or sealing resin, which is poured on the circuit board 5 in the circuit mounting groove 4.
[0021] Further, the circuit board 5 includes but is not limited to one of 1 / 4 bridge, half-bridge and full-bridge circuit structures.
[0022] In summary, the tension sensor with self-limiting protection has the advantages that the structure of the limiting recess 10 and the limiting lug 11 between the upper elastic flap 2 and the lower elastic flap 3 and the sensor body 1 can prevent the upper elastic flap 2 and the lower elastic flap 3 from being pulled off or not being reset due to excessive tension or pressure exceeding the measurement limit, the protective baffle 12 on the sensor body 1 can protect the circuit board 5, and the circuit board 5 can be easily disassembled and repaired, and the circuit board 5 is prevented from being damaged due to collision.
[0023] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A tension sensor with self-limiting protection, comprising a sensor body, a circuit board, and a cable, characterized in that: An upper elastic lift piece is provided at one end of the sensor body, and a lower elastic lift piece is provided at the other end. A circuit mounting groove is provided in the middle position of the sensor body. The circuit board is located in the circuit mounting groove and is fixed in the circuit mounting groove through a dustproof sealing layer. The circuit board is connected to a cable on one side of the sensor body. One end of the upper elastic lift piece is integrally made with the sensor body, and the other end is provided with a limiting protrusion. A limiting groove is provided on the sensor body corresponding to the limiting protrusion. The limiting protrusion is located in the limiting groove and a gap is left. The structure of the lower elastic lift piece and the sensor body is consistent with the structure of the upper elastic lift piece and the sensor body.
2. A tension sensor with self-limiting protection according to claim 1, characterized in that: The upper elastic lift piece and the lower elastic lift piece are respectively provided with connecting through holes, and the opening positions of the connecting through holes are symmetrical to each other.
3. The tension sensor with self-limiting protection according to claim 1, characterized in that: The circuit installation slot on the sensor body is hollow, and protective baffles are assembled on both sides of the sensor body corresponding to the circuit installation slots through fastening screws. A fixing through hole is provided on one side of the sensor body on which the cable is located, and the fastening screw is fixed through the fixing through hole.
4. The tension sensor with self-limiting protection according to claim 1, characterized in that: The inner contour of the limiting groove is consistent with the outer contour of the limiting protrusion, and there are no less than two turning points, and both are right-angle turns.
5. The tension sensor with self-limiting protection according to claim 1, characterized in that: The circuit board includes but is not limited to one of a quarter bridge, a half bridge and a full bridge circuit structure.