A belt sensor

Abstract

The utility model discloses a belt sensor, wherein a lower insulating layer has symmetrically formed bending parts on both sides, a positioning groove is formed between the bending part and the main body of the lower insulating layer, two ends of the conductive substrate are respectively embedded in the positioning groove, and a contact area is formed in the middle thereof, two ends of the conductive voltage plate are respectively arranged on the bending parts, and at least the part of the conductive voltage plate located above the contact area has an upper arc surface that can be pressed down and rebound, the upper insulating layer covers the upper end of the conductive voltage plate, the winding layer is wrapped around the outer side of the lower insulating layer and the upper insulating layer, and the shell is wrapped around the outer side of the winding layer. The conductive voltage plate of the utility model is preset with an upper arc surface that can be pressed down and rebound, which can avoid or reduce the downward bulging deformation caused by accumulation in the reciprocating process of being pressed down and rebounding, thereby ensuring the stable state of the conductive voltage plate and improving the service life of the belt sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a belt-type sensor. Background Art

[0002] The belt sensor, also known as the belt switch, has a long length and can be laid on the top of the wall, beside the bed, beside the safe, etc. It can be turned on after being pressed or stepped on to transmit signals or sound an alarm. The specific working principle of the belt switch is: it has a certain length and width when used on the electrical contactor, and can achieve the connection of two conductive media with a gap after being compressed at different positions, so that the lines connected to the two conductive plates are connected to achieve the overall model conduction.

[0003] When the conductive medium is in plate form, such as in the long strip switch with the authorization announcement number CN12211996C, the upper electrode plate and the lower electrode plate, as well as the shape of the upper electrode plate are disclosed. However, this type of upper electrode plate is prone to downward deformation after repeated pressure, resulting in inaccurate switching and reduced service life. Utility Model Content

[0004] The utility model aims to provide a belt sensor, in which a conductive voltage plate is pre-set with an upper arc surface that can rebound when pressed downward, which can avoid or reduce the downward bulging deformation caused by accumulation during the reciprocating process of descending under pressure and rebounding and rising, thereby ensuring the stability of the conductive voltage plate and prolonging the service life of the belt sensor.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a belt sensor, comprising:

[0006] The lower insulating layer has bending parts symmetrically formed on both sides, and a positioning groove is formed between the bending part and the main body of the lower insulating layer.

[0007] The conductive substrate has two ends respectively embedded in the positioning grooves and a contact area formed in the middle thereof.

[0008] The conductive pressure plate has two ends disposed on the bent portion, and at least a portion of the conductive pressure plate located above the abutting area has an upper curved surface that can rebound when pressed downward.

[0009] an upper insulating layer covering the upper end of the conductive voltage plate,

[0010] A winding layer, which is wrapped around the outer sides of the lower insulating layer and the upper insulating layer,

[0011] The shell is wrapped around the outer side of the winding layer.

[0012] As a further optimization, the abutment area has an upper convex surface, and the upper convex surface preferably has a bent plane in the middle, that is, the highest point is formed at the bend, so that the conductive substrate forms an inverted V-shaped structure. On the one hand, this structure can ensure the structural stability of the conductive substrate body, and on the other hand, it can ensure effective contact with the conductive voltage plate. Furthermore, it can facilitate contact and conduction with the conductive voltage plate, and can shorten the pressure drop distance of the conductive voltage plate and reduce the greater deformation degree of the conductive voltage plate.

[0013] As a further optimization, the orthographic projection of at least the middle portion of the conductive voltage plate within the abutment area is in a discontinuous state.

[0014] As a further optimization, the bending portion is a multi-layer bending structure, and at least one end of the conductive voltage plate is embedded in the upper part of the corresponding bending portion, which can ensure the stability of the conductive voltage plate and the insulation of the belt sensor.

[0015] As a further optimization, the conductive voltage plate includes copper material, and alloy copper can be selected. The conductive substrate is made of copper-plated steel. The contact resistance between the conductive voltage plate and the conductive substrate is below 50mΩ and has excellent high voltage resistance.

[0016] As a further optimization, the winding layer is a strip-shaped body, which is wound on the lower insulating layer and the upper insulating layer at intervals along the same spiral direction.

[0017] As a further optimization, the winding layer is made of plastic fiber, for example, nylon material can be selected, such as nylon rope, which is sequentially wound around the outer sides of the lower insulating layer and the upper insulating layer.

[0018] As a further optimization, the shell is made of a deformable plastic material and is extruded on the winding layer.

[0019] As a further optimization, the shell is formed with a convex portion at least above the abutting area, so that the belt sensor can be pressed conveniently through the convex portion and the pressure can be quickly and effectively transmitted to the conductive plate by using the convex portion.

[0020] As a further optimization, the height of the belt sensor is 4 mm-5 cm.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The conductive voltage plate is preset with an upper arc surface that can rebound when pressed down, which can avoid or reduce the downward convex deformation caused by accumulation during the reciprocating process of pressure drop and rebound rise, ensuring the stability of the conductive voltage plate and prolonging the service life of the belt sensor;

[0023] 2. The upper convex surface on the conductive substrate can reduce the distance that the upper arc surface drops under pressure, which can avoid the upper arc surface from undergoing a large degree of deformation multiple times, is conducive to its state recovery, can ensure the structural stability of the conductive voltage plate, and improve the service life of the belt sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the utility model.

[0025] Figure 2 It is a cross-sectional view of the utility model.

[0026] Figure 3 It is a structural diagram of the conductive voltage plate of the utility model.

[0027] Figure 4 It is a schematic diagram of the upper arc surface of the conductive voltage plate of the present invention.

[0028] Figure 5 It is a schematic diagram of the winding layer of the utility model.

[0029] Figure 6 It is a cross-sectional view of another embodiment of the utility model. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figures 1 to 5 As shown, a belt sensor 100 includes a lower insulating layer 1, a conductive substrate 2, a conductive voltage plate 3, an upper insulating layer 4, a winding layer 5 and a shell 6. The lower insulating layer 1 has symmetrically formed bending portions 11 on both sides. A positioning groove 10 is formed between the bending portion 11 and the main body of the lower insulating layer 1. The two ends of the conductive substrate 2 are respectively embedded in the positioning groove 10 to ensure the stability of the conductive substrate 2 on the lower insulating layer 1. A contact area 20 is formed in the middle of the area outside the positioning groove 10 on the conductive substrate 2. The two ends of the conductive voltage plate 3 are respectively arranged on the bending portion 11. For example, in one embodiment, it can be directly placed on the upper end of the bending portion 11. At least the portion of the conductive voltage plate 3 located above the contact area 20 has an upper arc surface 30 that can be pressed down and rebound. The upper insulating layer 4 covers the upper end of the conductive voltage plate 3. The winding layer 5 is wrapped around the outer side of the lower insulating layer 1 and the upper insulating layer 4, and the shell 6 is wrapped around the outer side of the winding layer 5.

[0032] In the present invention, the conductive substrate 2 is positioned on the lower insulating layer 1, and the conductive voltage plate 3 is placed on the bending portion 11 of the lower insulating layer 1, and the upper insulating layer 4 is stacked thereon, and the above components are fixed by wrapping the winding layer 5, and the preparation of the belt sensor 100 is completed by the outer molding shell 6, and the height of the belt sensor 100 is 4mm-5cm, and different thicknesses are selected according to different usage scenarios. In the present invention, the bending portion 11 can have a lifting function, which is used to lift the conductive voltage plate 3 to form a gap with the conductive substrate 1. The conductive voltage plate 3 has an upper arc surface 30, and the preset upper arc surface 30 can avoid or reduce the downward convex deformation caused by accumulation during the reciprocating process of pressure drop and rebound rise, and can avoid the gap between the conductive voltage plate 3 and the conductive substrate 2 disappearing or reducing, which causes the two to contact and conduct when there is no external pressure or the corresponding pressure value is not reached. Therefore, the preset upper arc surface 30 can increase the number of times of pressure without deformation, thereby increasing the service life.

[0033] Furthermore, a convex surface 21 of a certain degree can be formed on the abutment area 20. The existence of the convex surface preferably makes the conductive voltage plate 3 present an inverted V-shaped structure, so that the upper arc surface 30 of the conductive voltage plate 3 contacts and conducts with the upper convex surface 21 after being pressed down, which can reduce the distance that the upper arc surface 30 is pressed down, and can avoid the conductive voltage plate 3 being subjected to multiple large deformations that affect the resilience of the conductive voltage plate 3; and by reducing the distance after the upper arc surface is pressed down, the sensitivity of the conductive voltage plate 3 to contact and conduct with the conductive substrate 2 can be guaranteed.

[0034] The orthographic projection of the middle portion of the conductive plate 3 in the abutment area 20 is discontinuous, which can save material and make the conductive plate 3 lightweight, thereby ensuring that multiple points can be in contact and conduction with the conductive substrate 2 after the pressure drops.

[0035] like Figure 6 As shown, in another embodiment of the present invention, the bending portion 11 is a multi-layer bending structure, and the upper sides of a pair of bending portions 11 close to each other can form slots 111 respectively, and the two ends of the conductive voltage plate 3 are respectively embedded in the slots 111, which can ensure the stability of the conductive voltage plate 3 during initial installation, and the two ends of the conductive voltage plate 3 are blocked in the lower insulating layer 1, and the two ends of the conductive voltage plate 3 will not be offset in the horizontal direction and protrude from the side of the upper insulating layer 4 during installation or use, so the overall insulation performance can be further guaranteed. In addition, after the two ends of the conductive voltage plate 3 are placed in the slots 111, a gap 110 is formed between them and the side walls of the slot 111 when they are not subjected to downward pressure. The existence of the gap 110 can provide a space for the upper arc surface 30 of the conductive voltage plate 3 to be in a straight state during the process of being pressed down and to extend in the horizontal direction, which can ensure the structural stability of the lower insulating layer 1 to accommodate the conductive voltage plate 3.

[0036] In the present invention, the conductive plate 3 is made of copper, such as alloy copper, which has good conductivity, ductility, resilience and strength. The conductive substrate 1 is made of copper-plated steel, which has good conductivity and strength.

[0037] The winding layer 5 is a strip of plastic fiber, such as a strip of nylon material, which is wound around the lower insulating layer 1 and the upper insulating layer 4 at intervals along the same spiral direction.

[0038] The shell 6 is made of a deformable plastic material, which can rebound after being pressed down. It is extruded and formed on the winding layer 5 after being melted.

[0039] In addition, the housing 6 is formed with a convex portion 61 at least above the abutting area, and external force acting on the convex portion 61 makes it easier to press down the conductive plate 3.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A belt sensor, characterized in that: include: The lower insulating layer has bending parts symmetrically formed on both sides, and a positioning groove is formed between the bending part and the main body of the lower insulating layer. The conductive substrate has two ends respectively embedded in the positioning grooves and a contact area formed in the middle thereof. The conductive pressure plate has two ends disposed on the bent portion, and at least a portion of the conductive pressure plate located above the abutting area has an upper curved surface that can rebound when pressed downward. an upper insulating layer covering the upper end of the conductive voltage plate, A winding layer, which is wrapped around the outer sides of the lower insulating layer and the upper insulating layer, The shell is wrapped around the outer side of the winding layer.

2. The belt sensor according to claim 1, characterized in that The abutment area has an upper convex surface.

3. The belt sensor according to claim 1, characterized in that: The orthographic projection of at least the middle portion of the conductive voltage plate in the abutting area is in a discontinuous state.

4. The belt sensor according to any one of claims 1 to 3, characterized in that: The bending portion is a multi-layer bending structure, and at least one end of the conductive voltage plate is embedded in the upper part of the corresponding bending portion.

5. The belt sensor according to claim 1, characterized in that: The conductive plate is made of copper, and the conductive substrate is made of copper-plated steel.

6. The belt sensor according to claim 1, characterized in that The winding layer is a strip-shaped body, which is wound on the lower insulating layer and the upper insulating layer at intervals along the same spiral direction.

7. The belt sensor according to claim 1 or 6, characterized in that: The winding layer is made of plastic fiber.

8. The belt sensor according to claim 1, characterized in that The shell is made of a deformable plastic material and is formed on the winding layer by extrusion.

9. The belt sensor according to claim 1 or 8, characterized in that: The shell body is provided with a convex portion at least located above the abutting area.

10. The belt sensor according to claim 1, characterized in that The height of the belt sensor is 4 mm-5 cm.

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