Disc brake power cut-off switch structure

Abstract

The utility model discloses a kind of disc brake power-off switch structure, belong to electric vehicle disc brake system technical field, aim at overcoming the defect that current disc brake power-off switch is easy to malfunction. The deformation groove of switch shell first end portion makes it have elastic deformation ability, under the extrusion effect of adjusting screw, switch shell end portion deforms, its inner wall is closely attached to wire surface, forms ring type locking effect, avoids wire relative switch shell activity, to make the position of magnetic field sensing element more stable, reduce disc brake power-off switch malfunction risk.

Description

Technical Field

[0001] This utility model belongs to the technical field of disc brake systems for electric vehicles, and relates to a disc brake power-off switch structure. Background Technology

[0002] Disc brake power cut-off switches are critical safety components in the disc brake systems of electric vehicles such as electric bikes and electric motorcycles. Their core function is to quickly cut off the power supply to the motor when the rider operates the disc brake, preventing the dangerous situation where the motor continues to rotate while braking. This, in turn, shortens braking distance and reduces brake pad wear. Common disc brake power cut-off switches include mechanical lever structures and Hall effect magnet-based structures. Hall effect switches use a lever rotation to move a magnet assembly, which in turn generates a signal in conjunction with a Hall effect switch.

[0003] When a Hall effect switch is in operation, squeezing the handle causes the magnet assembly to rotate synchronously, changing its relative position with the Hall element. The Hall element senses the change in the magnetic field and outputs a specific linear voltage. When the voltage reaches the set value, the controller cuts off the motor power, achieving power-off braking. In existing disc brake power-off switches, the Hall element is connected to the controller via a wire. When the wire is stretched, the Hall element is prone to displacement, which can easily cause the disc brake power-off switch to malfunction. Summary of the Invention

[0004] This utility model proposes a disc brake power-off switch structure to address the problems existing in the prior art, aiming to overcome the defect that existing disc brake power-off switches are prone to failure.

[0005] This utility model is implemented as follows:

[0006] A disc brake power-off switch structure, characterized in that it includes:

[0007] The mounting base has a mounting slot;

[0008] A switch housing is inserted into the mounting slot, with its first end exposed outside the mounting base and having a deformation groove.

[0009] The magnetic field sensing element is housed inside the switch housing.

[0010] A wire is connected to the magnetic field sensing element and extends out from the first end of the switch housing;

[0011] An adjusting screw has an axial through hole through which the first end of the switch housing passes. The adjusting screw is threaded into the fixing seat. The switch housing and the adjusting screw are fixed relative to each other in the axial direction. The inner wall of the adjusting screw presses against the first end of the switch housing so that the first end of the switch housing is pressed tightly against the wire.

[0012] The inner wall of the mounting groove has a positioning groove, the switch housing has a positioning part that cooperates with the positioning groove, the fixing seat has a threaded hole that extends through the mounting groove, a fastening screw is installed in the threaded hole, and the fastening screw abuts against the adjusting screw.

[0013] The switch housing has a first limiting platform and a second limiting platform located at the first end of the switch housing, and the two ends of the adjusting screw abut against the first limiting platform and the second limiting platform, respectively.

[0014] The end of the second limiting platform facing away from the adjusting screw has a guide slope.

[0015] The deformation groove includes a first groove and a second groove arranged symmetrically about the axis of the switch housing.

[0016] The magnetic field sensing element is a Hall element or a reed switch.

[0017] The present invention has the following beneficial effects: the deformation groove at the first end of the switch housing enables it to elastically deform. Under the squeezing action of the adjusting screw, the end of the switch housing deforms, and its inner wall then tightly adheres to the surface of the wire, forming a ring-like locking effect. This prevents the wire from moving relative to the switch housing, thereby making the position of the magnetic field sensing element more stable and reducing the risk of disc brake power-off switch failure. This fixation achieved through elastic deformation can generate sufficient static friction to resist wire pulling while avoiding damage to the wire insulation layer caused by rigid compression. Attached Figure Description

[0018] Figure 1 A schematic diagram of the disc brake power-off switch structure;

[0019] Figure 2 This is a partial structural diagram of the disc brake power-off switch.

[0020] Figure 3 This is a schematic diagram of the structure of the fixed base;

[0021] Figure 4 This is a schematic diagram of the switch housing.

[0022] Figure labeling: 100, fixed base; 110, mounting groove; 120, positioning groove; 130, threaded hole; 200, switch housing; 210, deformation groove; 211, first groove; 212, second groove; 220, positioning part; 230, first limiting platform; 240, second limiting platform; 241, guide slope; 300, wire; 400, adjusting screw. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of this utility model easier to understand and master. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] This embodiment provides a disc brake power-off switch structure, such as... Figure 1-4 As shown, the device includes a mounting base 100, a switch housing 200, a magnetic field sensing element, a wire 300, and an adjusting screw 400. The mounting base 100 has a mounting groove 110, in which the switch housing 200 is inserted. The first end of the switch housing 200 protrudes from the mounting base 100 and has a deformation groove 210. The magnetic field sensing element is disposed within the switch housing 200. The wire 300 is connected to the magnetic field sensing element and extends from the first end of the switch housing 200. The adjusting screw 400 has an axial through hole through which the first end of the switch housing 200 passes. The adjusting screw 400 is threaded into the mounting base 100. The switch housing 200 and the adjusting screw 400 are axially fixed relative to each other. The inner wall of the adjusting screw 400 presses against the first end of the switch housing 200 to make the first end of the switch housing 200 press tightly against the wire 300. The magnetic field sensing element is a Hall effect sensor or a reed switch.

[0025] When the brake lever is squeezed, the magnet assembly rotates synchronously, changing its relative position with the magnetic field sensing element. The magnetic field sensing element detects the change in the magnetic field and outputs a linear voltage signal. When the voltage reaches the threshold set by the controller, the motor power is quickly cut off. The rigid positioning of the mounting base 100 and the switch housing 200 ensures a more precise initial relative position between the magnetic field sensing element and the magnet assembly, preventing threshold drift caused by housing movement and ensuring the timeliness and accuracy of the power-off signal output.

[0026] By adjusting the screw 400 to press the end of the switch housing 200 to form a ring-shaped locking mechanism, the wire 300 and the switch housing 200 are rigidly connected as a whole. When the wire 300 is pulled by an external force, the tension is transmitted to the fixing base 100 through the locking part, rather than acting directly on the wiring terminal of the magnetic field sensing element. The magnetic field sensing element is stably confined inside the switch housing 200, and its relative position with the magnet assembly is always kept within the effective sensing range, ensuring the stability of magnetic field signal detection.

[0027] like Figure 3 , 4As shown, the inner wall of the mounting groove 110 has a positioning groove 120, and the switch housing 200 has a positioning part 220 that cooperates with the positioning groove 120. This prevents the switch housing 200 and the fixing seat 100 from rotating relative to each other. The fixing seat 100 has a threaded hole 130 that extends through the mounting groove 110. A fastening screw is installed in the threaded hole 130, and the fastening screw abuts against the adjusting screw 400. In this way, the adjusting screw 400 is fixed on the fixing seat 100, preventing the adjusting screw 400 from rotating relative to the fixing seat 100 and preventing the switch housing 200 from detaching from the fixing seat 100.

[0028] like Figure 2 , 4 As shown, the switch housing 200 has a first limiting platform 230 and a second limiting platform 240 located at the first end of the switch housing 200. The two ends of the adjusting screw 400 abut against the first limiting platform 230 and the second limiting platform 240, respectively. The switch housing 200 and the adjusting screw 400 are axially limited. When the adjusting screw 400 rotates, it moves axially relative to the fixed base 100, causing the switch housing 200 to move axially, thereby adjusting the position of the magnetic field sensing element inside the switch housing 200 and ensuring that the magnetic field sensing element can be in an effective sensing position.

[0029] like Figure 1 , 4 As shown, the second limiting platform 240 has a guide slope 241 at the end facing away from the adjusting screw 400. This facilitates the insertion of the switch housing 200 into the adjusting screw 400, so that the adjusting screw 400 is embedded in the position between the first limiting platform 230 and the second limiting platform 240.

[0030] like Figure 1 , 4 As shown, the deformation groove 210 includes a first groove 211 and a second groove 212 symmetrically arranged about the axis of the switch housing 200. In this way, the first end of the switch housing 200 is divided into two halves, which facilitates deformation.

[0031] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A disc brake power-off switch structure, characterized in that, include: The mounting base (100) has a mounting slot (110); A switch housing (200) is inserted into the mounting groove (110), and the first end of the switch housing (200) is exposed outside the fixing base (100) and has a deformation groove (210). A magnetic field sensing element is disposed inside the switch housing (200); A wire (300) is connected to the magnetic field sensing element and extends out from the first end of the switch housing (200); An adjusting screw (400) has an axial through hole through which the first end of the switch housing (200) passes. The adjusting screw (400) is threadedly engaged with the fixing seat (100). The switch housing (200) and the adjusting screw (400) are fixed relative to each other in the axial direction. The inner wall of the adjusting screw (400) presses against the first end of the switch housing (200) so that the first end of the switch housing (200) is pressed tightly against the wire (300).

2. The disc brake power-off switch structure according to claim 1, characterized in that, The inner wall of the mounting groove (110) has a positioning groove (120), and the switch housing (200) has a positioning part (220) that cooperates with the positioning groove (120). The fixing seat (100) has a threaded hole (130) that extends through the mounting groove (110). A fastening screw is installed in the threaded hole (130), and the fastening screw abuts against the adjusting screw (400).

3. The disc brake power-off switch structure according to claim 1, characterized in that, The switch housing (200) has a first limiting platform (230) and a second limiting platform (240) located at the first end of the switch housing (200), and the two ends of the adjusting screw (400) abut against the first limiting platform (230) and the second limiting platform (240) respectively.

4. The disc brake power-off switch structure according to claim 3, characterized in that, The second limiting platform (240) has a guide slope (241) at the end opposite to the adjusting screw (400).

5. The disc brake power-off switch structure according to claim 1, characterized in that, The deformation groove (210) includes a first groove (211) and a second groove (212) arranged symmetrically about the axis of the switch housing (200).

6. The disc brake power-off switch structure according to claim 1, characterized in that, The magnetic field sensing element is a Hall element or a reed switch.

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