A structure for connecting an extension cord based on a capacitive sensor
By introducing a reinforcing structure into the connection structure of the capacitive sensor extension line, and utilizing the design of threaded connections and elastic elements, the problem of easy breakage of traditional capacitive sensor extension lines is solved, achieving higher signal stability and sensor reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHOU JISHI (SHANGHAI) ELECTRONIC TECH CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional capacitive sensor extension cable connection structures lack reinforcement, making the internal wires prone to breakage when pulled, bent, or squeezed, and the outer insulation layer may be damaged, affecting signal stability and sensor effectiveness.
An extension line connection structure based on a capacitive sensor was designed. The reinforced structure includes a third and a fourth mating part. Through the cooperation of threaded connection and elastic element, a stable connection between the sensor body and the extension line body is achieved, which enhances the tensile strength and buffering capacity.
It effectively prevents the extension cable from breaking and making poor contact due to mechanical vibration or frequent plugging and unplugging, thus improving the stability and reliability of signal transmission.
Smart Images
Figure CN224554854U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitive sensor extension lines, specifically an extension line connection structure based on a capacitive sensor. Background Technology
[0002] Capacitive sensors detect changes in capacitance (C) to perceive the measured physical quantity. When the measured physical quantity (such as displacement, pressure, liquid level, etc.) causes any of the above parameters to change, the capacitance value changes accordingly. The sensor converts the capacitance change into electrical signals such as voltage and frequency, realizing the conversion from non-electrical quantity to electrical quantity. The extension cable of the capacitive sensor can be a coaxial cable, twisted pair cable, or shielded cable. The specific choice depends on the type of sensor and the signal transmission method. Coaxial cables have less signal attenuation and are suitable for long-distance transmission; twisted pair cables and shielded cables are suitable for short-distance transmission. The specifications of the extension cable should match the output signal of the sensor to ensure the stability and accuracy of the signal.
[0003] However, most traditional capacitive sensor extension cables have a relatively simple connection structure, relying only on simple plugging and tightening without reinforcement structures or measures. Extension cables lacking reinforcement (such as no braided layer, metal sheath, or rigid support) are prone to internal wire breakage and outer insulation layer damage when subjected to tension, bending, or compression, leading to sensor failure. For example, in industrial automation scenarios, the movement of robotic arms or equipment vibration may directly break the cable. Furthermore, if the connection between the extension cable and the sensor or measuring equipment is not reinforced, frequent plugging and unplugging or vibration may lead to poor contact, causing signal interruption or measurement errors. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, most traditional capacitive sensor extension cable connection structures are relatively simple, relying only on simple plugging and tightening without reinforcement structures and measures. Extension cables without reinforcement structures are prone to internal wire breakage and outer insulation layer damage when subjected to pulling, bending or squeezing, leading to sensor failure. This utility model proposes an extension cable connection structure based on capacitive sensors.
[0005] The technical solution adopted by this utility model to solve its technical problem is: an extension line connection structure based on a capacitive sensor, including a sensor body and an extension line body, a first docking member is fixedly connected to one side of the sensor body, a second docking member is fixedly connected to one end of the extension line body, the inner wall of the second docking member is threadedly connected to the surface of the first docking member, and a reinforcement structure is provided between the sensor body and the extension line body.
[0006] The reinforcement structure includes a third docking member and a fourth docking member. The inner cavity of the third docking member is fitted onto the surface of the first docking member. The third docking member has four slots on one side. The inner cavity of each slot is provided with an elastic element. The inner cavity of the third docking member is provided with a fixing rod. The inner cavity of the fourth docking member is slidably fitted onto the surface of the second docking member. Two limiting plates are fixedly connected to the surface of the second docking member. One side of each limiting plate is attached to one side of the fourth docking member. Four inserts are fixedly connected to one side of the fourth docking member. Each insert is inserted into a corresponding slot. A fixing hole is provided on one side of each insert. The surface of the fixing rod is inserted into the inner wall of the fixing hole.
[0007] Preferably, a fixing plate is fixedly connected to the surface of the third docking member, and one side of the fixing plate is fixedly connected to one side of the sensor body.
[0008] Preferably, the surface of the fixing rod is provided with a threaded groove, and the inner wall of the threaded groove is threadedly connected to the inner cavity of the third mating member.
[0009] Preferably, the elastic element includes a damping telescopic rod, one end of which is fixedly connected to the inner wall of the slot, and the other end of which is fixedly connected to a stop block, one side of which abuts against one side of the insert block.
[0010] Preferably, a first spring is sleeved on the surface of the damping telescopic rod, one end of the first spring is fixedly connected to the inner wall of the slot, and the other end of the first spring is fixedly connected to one side of the abutment.
[0011] Preferably, a second spring is fixedly connected to one side of the fourth docking member, and there are multiple second springs. A buffer plate is fixedly connected to the other end of the second spring, and the buffer plate is sleeved on the surface of the extension line body.
[0012] Preferably, a buffer pad is fixedly connected to the inner wall of the buffer plate, and the inner wall of the buffer pad is in contact with the surface of the extension line body.
[0013] The advantages of this utility model are:
[0014] In this invention, the sensor body and the extension cable body can be first connected by screwing together the first and second mating parts. The third mating part in the reinforcement structure is first sleeved on the surface of the first mating part, and the fourth mating part is limited to the surface of the second mating part by a limiting plate. The fourth mating part can rotate along the second mating part. The insert on one side of the fourth mating part can be inserted into the corresponding slot. The insert can squeeze the elastic element in the inner cavity of the slot. When the insert is displaced to the position of the fixing hole and the fixing rod, the fixing rod passes through the inner cavity of the third mating part and the insert. The fixing rod is threaded to the third mating part through the threaded groove, thereby fixing the third and fourth mating parts and reinforcing the sensor body and the extension cable body. This solves the problems of the traditional capacitive sensor extension cable connection structure being relatively simple, relying only on simple insertion and screwing, lacking reinforcement structure and measures. Extension cables without reinforcement structure are prone to internal wire breakage and outer insulation layer damage when subjected to pulling, bending or compression, leading to sensor failure. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a three-dimensional schematic diagram of the sensor body and the first docking component of this utility model;
[0018] Figure 3 This is a three-dimensional schematic diagram of the fixing rod structure of this utility model;
[0019] Figure 4 This is a three-dimensional schematic diagram of the extension line body and the second docking component of this utility model;
[0020] Figure 5 This is a half-sectional view of the overall structure connection of this utility model;
[0021] Figure 6 For the present utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle.
[0022] In the diagram: 1. Sensor body; 2. Extension cable body; 3. First docking piece; 4. Second docking piece; 5. Reinforcing structure; 501. Third docking piece; 502. Fourth docking piece; 503. Slot; 504. Fixing rod; 5041. Threaded groove; 505. Limiting plate; 506. Insert block; 507. Fixing hole; 6. Elastic element; 601. Damping telescopic rod; 602. Abutment block; 603. First spring; 7. Fixing plate; 8. Second spring; 9. Buffer plate; 10. Buffer pad. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0025] This application discloses an extension line connection structure based on a capacitive sensor. (Refer to...) Figures 1 to 6 An extension line connection structure based on a capacitive sensor includes a sensor body 1 and an extension line body 2. A first mating member 3 is fixedly connected to one side of the sensor body 1, and a second mating member 4 is fixedly connected to one end of the extension line body 2. The inner wall of the second mating member 4 is threadedly connected to the surface of the first mating member 3. A reinforcing structure 5 is provided between the sensor body 1 and the extension line body 2.
[0026] The reinforcing structure 5 includes a third docking member 501 and a fourth docking member 502. The inner cavity of the third docking member 501 is fitted onto the surface of the first docking member 3. Four slots 503 are provided on one side of the third docking member 501. An elastic element 6 is provided within the inner cavity of each slot 503. A fixing rod 504 is provided within the inner cavity of the third docking member 501. The inner cavity of the fourth docking member 502 is slidably fitted onto the surface of the second docking member 4. A limiting plate 505 is fixedly connected to the surface of the second docking member 4. There are two positioning plates 505. One side of each positioning plate 505 is attached to one side of the fourth docking member 502. Four insert blocks 506 are fixedly connected to one side of the fourth docking member 502. Each insert block 506 is inserted into a corresponding slot 503. A fixing hole 507 is provided on one side of each insert block 506. The surface of a fixing rod 504 is inserted into the inner wall of the fixing hole 507. A threaded groove 5041 is provided on the surface of the fixing rod 504. The inner wall of the threaded groove 5041 is connected to the third docking member 502. In the internal threaded connection of 01, the sensor body 1 and the extension line body 2 in the extension line connection structure based on the capacitive sensor can be first connected by the first docking part 3 and the second docking part 4 through threaded tightening. The third docking part 501 in the reinforcement structure 5 is first sleeved on the surface of the first docking part 3. The fourth docking part 502 is limited to the surface of the second docking part 4 by the limiting plate 505, and the fourth docking part 502 can rotate along the second docking part 4. The insert 506 on one side of the fourth docking part 502 can be inserted into the corresponding slot 503. The insert 506 can squeeze the elastic element 6 in the inner cavity of the slot 503. When the insert 506 is displaced to the position of the fixing hole 507 and the fixing rod 504 corresponding to each other, the fixing rod 504 passes through the inner cavity of the third docking part 501 and the insert 506. The fixing rod 504 is threadedly connected to the third docking part 501 through the threaded groove 5041, so that the third docking part 501 and the fourth docking part 502 are fixedly connected, and the sensor body 1 and the extension line body 2 are reinforced.
[0027] Reference Figure 1 A fixing plate 7 is fixedly connected to the surface of the third docking part 501. One side of the fixing plate 7 is fixedly connected to one side of the sensor body 1. Multiple fixing bolts can be inserted into the fixing plate 7. The third docking part 501 and the sensor body 1 can be fixedly connected by the cooperation of the fixing bolts and the fixing plate 7.
[0028] Reference Figure 5 and Figure 6The elastic element 6 includes a damping telescopic rod 601. One end of the damping telescopic rod 601 is fixedly connected to the inner wall of the slot 503, and the other end of the damping telescopic rod 601 is fixedly connected to a stop block 602. One side of the stop block 602 abuts against one side of the insert block 506. A first spring 603 is sleeved on the surface of the damping telescopic rod 601. One end of the first spring 603 is fixedly connected to the inner wall of the slot 503, and the other end of the first spring 603 is fixedly connected to one side of the stop block 602. Through the elastic element 6, the damping telescopic rod 601 plays a major connecting role. The damping telescopic rod 601 can connect the stop block 602 to the inner cavity of the slot 503. The first spring 603 can provide elastic support for the stop block 602. When the insert block 506 is inserted into the slot 503, it can squeeze the stop block 602 and the first spring 603. The elastic force of the first spring 603 increases the firmness between the insert block 506 and the fixing rod 504, further improving the reinforcement stability.
[0029] Reference Figure 4 A second spring 8 is fixedly connected to one side of the fourth docking part 502. There are multiple second springs 8. A buffer plate 9 is fixedly connected to the other end of the second spring 8. The buffer plate 9 is sleeved on the surface of the extension cable body 2. A buffer pad 10 is fixedly connected to the inner wall of the buffer plate 9. The inner wall of the buffer pad 10 is in contact with the surface of the extension cable body 2. Through the second spring 8 and the buffer plate 9, the buffer pad 10 can be made of rubber and fixedly connected to the buffer plate 9. The buffer pad 10 is sleeved on the surface of the extension cable body 2. Therefore, the second spring 8 can provide elastic support for the buffer plate 9 and the extension cable body 2, which can maximize the buffering effect when the extension cable body 2 is accidentally pulled.
[0030] Working principle: The sensor body 1 and the extension cable body 2 can be first connected by screwing together the first docking part 3 and the second docking part 4. The third docking part 501 in the reinforcement structure 5 is first sleeved on the surface of the first docking part 3. The fourth docking part 502 is limited to the surface of the second docking part 4 by the limiting plate 505, and the fourth docking part 502 can rotate along the second docking part 4. The insert 506 on one side of the fourth docking part 502 can be inserted into the corresponding slot 503. The insert 506 can compress the elastic element 6 in the inner cavity of the slot 503. When the insert 506 is displaced to the position where the fixing hole 507 and the fixing rod 504 correspond to each other, the fixing rod 504 passes through the inner cavity of the third docking part 501 and the insert 506. The fixing rod 504 is threadedly connected to the third docking part 501 through the threaded groove 5041, so that the third docking part 501... The fourth docking part 502 is fixedly connected to reinforce the sensor body 1 and the extension cable body 2. The damping telescopic rod 601 in the elastic part 6 plays the main connecting role. The damping telescopic rod 601 can connect the abutment 602 to the inner cavity of the slot 503. The first spring 603 can provide elastic support for the abutment 602. When the insert 506 is inserted into the slot 503, it can squeeze the abutment 602 and the first spring 603. The elastic force of the first spring 603 increases the firmness between the insert 506 and the fixing rod 504, further improving the reinforcement stability. The buffer pad 10 can be made of rubber and fixedly connected to the buffer plate 9. The buffer pad 10 is sleeved on the surface of the extension cable body 2. Therefore, the second spring 8 can provide elastic support for the buffer plate 9 and the extension cable body 2, which can maximize the buffering effect when the extension cable body 2 is accidentally pulled.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An extension line connection structure based on a capacitive sensor, comprising a sensor body (1) and an extension line body (2), characterized in that: A first docking piece (3) is fixedly connected to one side of the sensor body (1), and a second docking piece (4) is fixedly connected to one end of the extension line body (2). The inner wall of the second docking piece (4) is threadedly connected to the surface of the first docking piece (3). A reinforcing structure (5) is provided between the sensor body (1) and the extension line body (2). The reinforcing structure (5) includes a third docking member (501) and a fourth docking member (502). The inner cavity of the third docking member (501) is fitted onto the surface of the first docking member (3). A slot (503) is provided on one side of the third docking member (501). There are four slots (503). An elastic element (6) is provided in the inner cavity of the slot (503). A fixing rod (504) is provided in the inner cavity of the third docking member (501). The inner cavity of the fourth docking member (502) is slidably fitted onto the surface of the second docking member (4). The surface of the connector (4) is fixedly connected to a limiting plate (505). There are two limiting plates (505). One side of each limiting plate (505) is attached to one side of the fourth connector (502). One side of the fourth connector (502) is fixedly connected to a plug (506). There are four plugs (506). Each plug (506) is inserted into a corresponding slot (503). A fixing hole (507) is opened on one side of each plug (506). The surface of the fixing rod (504) is inserted into the inner wall of the fixing hole (507).
2. The extension line connection structure based on a capacitive sensor according to claim 1, characterized in that: The surface of the third docking part (501) is fixedly connected to a fixing plate (7), and one side of the fixing plate (7) is fixedly connected to one side of the sensor body (1).
3. The extension line connection structure based on a capacitive sensor according to claim 1, characterized in that: The surface of the fixing rod (504) is provided with a threaded groove (5041), and the inner wall of the threaded groove (5041) is threadedly connected to the inner cavity of the third mating part (501).
4. The extension line connection structure based on a capacitive sensor according to claim 1, characterized in that: The elastic element (6) includes a damping telescopic rod (601), one end of which is fixedly connected to the inner wall of the slot (503), and the other end of which is fixedly connected to a stop block (602), one side of which abuts against one side of the insert block (506).
5. The extension line connection structure based on a capacitive sensor according to claim 4, characterized in that: The surface of the damping telescopic rod (601) is fitted with a first spring (603), one end of the first spring (603) is fixedly connected to the inner wall of the slot (503), and the other end of the first spring (603) is fixedly connected to one side of the abutment (602).
6. The extension line connection structure based on a capacitive sensor according to claim 1, characterized in that: A second spring (8) is fixedly connected to one side of the fourth docking member (502). There are multiple second springs (8). A buffer plate (9) is fixedly connected to the other end of the second spring (8). The buffer plate (9) is sleeved on the surface of the extension line body (2).
7. The extension line connection structure based on a capacitive sensor according to claim 6, characterized in that: The inner wall of the buffer plate (9) is fixedly connected to a buffer pad (10), and the inner wall of the buffer pad (10) is attached to the surface of the extension line body (2).