A device for controlling the on-off of an automobile circuit driven by a motor

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The automotive circuit switching device, controlled by multiple contacts and springs, solves the problems of energy waste and poor shock resistance of traditional relays, achieves stable electrical connection under high current conditions, and improves conductivity and shock resistance.

CN224536995UActive Publication Date: 2026-07-21杨乐

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: 杨乐
Filing Date: 2025-06-12
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

In existing automotive battery disconnect switches, traditional relays suffer from energy waste and overheating, magnetic latching relays have poor shock resistance, and double-contact relays are prone to poor contact or loose connections under high current.

Method used

The automotive circuit switching device, which adopts a multi-contact structure and independent spring control, achieves precise control and adaptive compensation of the contacts through the linkage of a rotating wheel and a hook, combined with an elastic conductive sheet and spring structure, thereby enhancing shock resistance and synchronization.

Benefits of technology

It achieves stable contact connection under high current conditions, avoids poor contact and increased resistance caused by vibration, and improves conductivity and shock resistance.

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Abstract

The utility model belongs to circuit on-off technical field, concretely relates to a kind of device of automobile circuit on-off driven by control motor.It is fixed with motor to its installation bottom plate, and motor output shaft is connected rotating wheel;Rotating wheel periphery extends outward, and recessed portion is formed by inwardly bending extension section, and the outside is convex portion.Hook is connected by first horizontal plate and second horizontal plate through vertical plate, and first horizontal plate is attached to extension section.One end of elastic conductive sheet is fixed to first fixed plate, and the other end extends to the upper of second fixed plate, and it is equipped with multiple first contact points that are penetrated;Every contact point is equipped with a fixed spring above, and lower end is abutted with contact point.Second fixed plate is equipped with second contact point corresponding to first contact point position;Second horizontal plate is between elastic conductive sheet and second fixed plate, and is fixed with elastic conductive sheet, and it is hollowed out corresponding to first contact point position.The utility model realizes the quick on-off of contact point, pressure stability and anti-seismic reliable through the mechanical linkage of rotating wheel and hook, the elastic compensation of spring.

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Description

Technical Field

[0001] This utility model belongs to the field of automotive battery circuit switching technology, specifically relating to a device for switching automotive circuits by controlling a motor drive. Background Technology

[0002] Currently, traditional relays or magnetic latching relays are commonly used in the field of intelligent vehicle battery power-off switches to achieve circuit switching. Traditional relays need to continuously consume power when energized, resulting in energy waste and heat generation problems; while magnetic latching relays can maintain their state after power is cut off, they rely on permanent magnets to maintain contact pressure, which has defects such as poor shock resistance and susceptibility to contact malfunctions or poor contact due to vibration.

[0003] In addition, current motor relays use dual contacts, which are suitable for small currents. When one contact is manufactured with a high or low process, the synchronization of the contacts is difficult to guarantee. Since it is not possible to guarantee that the two contacts can be tightly connected at the same time, it is easy to cause defects such as loose contact or poor contact, which can easily lead to increased resistance or local overheating and poor conductivity.

[0004] Therefore, there is an urgent need to develop a device that controls the on / off state of automotive circuits driven by a motor to solve the above problems. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing a device for controlling the on / off state of a motor-driven automotive circuit. Through multiple contacts, it achieves a solution for motor control suitable for high currents. The relatively independent contacts, combined with a spring structure, enhance shock resistance, thus solving the technical problems of poor shock resistance and loose contact.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A device for controlling the on / off switching of an automotive circuit driven by a motor includes: a mounting base plate, a motor, a rotating wheel, a hook, an elastic conductive sheet, a first fixing plate, and a second fixing plate.

[0008] The motor is fixed to the mounting base plate, and its output shaft is connected to the rotating wheel; the rotating wheel has an extension section extending outward from its periphery, the extension section bends inward to form a concave part, and its outer side forms a convex part.

[0009] The hook includes a first horizontal plate and a second horizontal plate that are parallel to each other and are connected by a vertical plate. The first horizontal plate is attached to the extension of the rotating wheel.

[0010] One end of the elastic conductive sheet is fixed to the first fixing plate, and the other end extends to the top of the second fixing plate. The elastic conductive sheet is provided with multiple through first contacts. A spring is provided above each first contact. The upper end of the spring is fixed to the fixing structure of the mounting base plate, and the lower end elastically abuts against the first contact or the elastic conductive sheet.

[0011] The second fixing plate is provided with a second contact point at the position corresponding to the first contact point;

[0012] The second horizontal plate below the hook is located between the elastic conductive sheet and the second fixing plate, and is fixed to the elastic conductive sheet. It has a hollow area corresponding to the first contact point.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the free end of the elastic conductive sheet is provided with multiple cuts, dividing the free end into several independent elastic arms, with each first contact point fixedly penetrating the end of an elastic arm.

[0015] Furthermore, multiple cuts are evenly distributed along the width direction of the elastic conductive sheet, and adjacent cuts are parallel to each other.

[0016] Furthermore, the rotating wheel has two symmetrical outward extension segments around its periphery, forming an overall inverted S-shape.

[0017] Furthermore, one end of the second horizontal plate is fixedly connected to the bottom of the vertical plate, and the other end is fixedly connected to the middle of the elastic conductive sheet by riveting or bolting.

[0018] Furthermore, the fixing structure includes a spring baffle and two first mounting posts fixed above the mounting base plate. The spring baffle is horizontally fixed between the two first mounting posts, and the upper end of the spring is fixed to the lower surface of the spring baffle.

[0019] Furthermore, the first fixing plate and the second fixing plate are fixedly installed on the mounting base plate.

[0020] Furthermore, a second mounting column is fixed above the mounting base plate, and the motor is mounted on the second mounting column by bolts.

[0021] The beneficial effects of this utility model are:

[0022] 1. In this utility model, the concave and convex portions of the rotating wheel convert rotational motion into linear displacement via hooks, precisely controlling the closing and opening of the contacts. A spring return provides basic contact pressure, while the lever effect of the hooks enhances closing stability. This dual mechanism ensures uniform pressure distribution at the contacts, preventing poor contact caused by vibration.

[0023] 2. The elastic conductive sheet of this utility model is divided into multiple independent elastic arms by a cut. Each contact point is independent and controlled by a corresponding independent spring, which allows for local adaptive adjustment and can adaptively compensate for height deviations (such as the problem of a certain contact point being too high or too low due to production errors), avoid single-point poor connection, and completely solve the problem of multi-contact synchronization. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the device for controlling the on / off state of a motor-driven automotive circuit according to an embodiment of the present invention.

[0025] Figure 2 This is a partial structural diagram of the internal structure of the device for controlling the on / off state of a motor-driven automotive circuit according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the hook described in an embodiment of the present utility model;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Motor; 2. Hook; 21. First horizontal plate; 22. Second horizontal plate; 23. Vertical plate; 24. Hollowed-out area; 3. Mounting base plate; 4. Second fixing plate; 5. First fixing plate; 6. Elastic conductive sheet; 7. First contact point; 8. Rotating wheel; 9. Spring baffle; 10. Spring; 11. First mounting post; 12. Second mounting post; 13. Second contact point. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0032] Example

[0033] A device for controlling the on / off state of an automobile's circuit driven by a motor, such as Figure 1-2 As shown, it includes: a mounting base plate 3, a motor 1, a rotating wheel 8, a hook 2, and an elastic conductive sheet 6; the mounting base plate 3 is fixedly mounted with a first fixing plate 5 and a second fixing plate 4; wherein the elastic conductive sheet 6, the first fixing plate 5, and the second fixing plate 4 are all made of copper for conductivity;

[0034] A second mounting column 12 is fixed above the mounting base plate 3. The motor 1 is mounted on the second mounting column 12 by bolts, and its output shaft is connected to the rotating wheel 8. The rotating wheel 8 has two extension sections that extend symmetrically outward around its periphery. The overall shape is reverse S-shaped. Its structural symmetry can reduce the influence of eccentric vibration on the stability of the contact point. The extension sections bend inward to the rotating wheel 8 to form a concave part, and a convex part is formed on its outer side.

[0035] like Figure 3 As shown, the hook 2 includes a first horizontal plate 21 and a second horizontal plate 22 that are parallel to each other and are connected by a vertical plate 23. The first horizontal plate 21 is attached to the extension of the rotating wheel 8.

[0036] One end of the elastic conductive sheet 6 is fixed to the first fixing plate 5, and the other end extends to the top of the second fixing plate 4. The elastic conductive sheet 6 is provided with a plurality of through first contact points 7. A spring 10 is provided above each first contact point 7. The upper end of the spring 10 is fixed to the fixing structure of the mounting base plate 3, and the lower end is sleeved on the first contact point 7 and elastically abuts against the elastic conductive sheet 6.

[0037] The second fixing plate 4 is provided with a second contact 13 at the position corresponding to the first contact 7;

[0038] The second horizontal plate 22 below the hook 2 is located between the elastic conductive sheet 6 and the second fixing plate 4. One end is fixedly connected to the bottom of the vertical plate 23, and the other end is fixedly connected to the middle of the elastic conductive sheet 6 by bolts. A hollow area 24 is provided at the position corresponding to the first contact point 7. There is a distance between the bolt and the edge of the second horizontal plate 22. When the hook 2 is pressed down, the bolt can act as a fulcrum. When the hook 2 is continuously pressed down, the edge of the second horizontal plate 22 forms a lever with the screw as the fulcrum, applying a secondary downward pressure to the elastic conductive sheet 6, further pressing the contact point.

[0039] The fixing structure includes a spring baffle 9 and two first mounting posts 11 fixed above the mounting base plate 3. The spring baffle 9 is horizontally fixed between the two first mounting posts 11, and the upper end of the spring 10 is fixed to the lower surface of the spring baffle 9.

[0040] The extension of the rotating wheel 8 is bent to form a concave part and a convex part. Combined with the linkage between the hook 2 and the elastic conductive sheet 6, the precise separation and closure of the contacts are achieved. When the concave part presses down on the hook 2, the spring 10 returns to its original position, applying downward pressure and connecting the contacts. When the convex part lifts the hook 2, the contacts separate. This solves the problems of easy loose connection due to vibration and insufficient contact pressure in high current scenarios of traditional relays.

[0041] In a preferred embodiment, the free end of the elastic conductive sheet 6 has multiple slits, dividing the free end into several independent elastic arms. Each first contact 7 is fixedly inserted through the end of an elastic arm. The multiple slits are evenly distributed along the width direction of the elastic conductive sheet 6, and adjacent slits are parallel to each other. This design allows each contact to have independent movement space. When a contact is too high or too low due to manufacturing process issues, the spring 10 can independently press down the first contact 7 to make it fit with the second contact 13 below. When a contact has inconsistent height due to assembly or manufacturing process issues, it may be possible to make one contact fit, avoiding the contact being suspended and loosely connected, which would lead to increased resistance and poor conductivity.

[0042] The working process of this utility model:

[0043] Contact Closure: Motor 1 drives the rotating wheel 8 to rotate counterclockwise. The concave part of the rotating wheel 8 contacts and presses down on the first horizontal plate 21 of the hook 2. When the second horizontal plate 22 of the hook 2 is pressed down, its first horizontal plate 21 pulls down the elastic conductive sheet 6 through the screw fulcrum. The spring 10 returns to its original position due to pressure release, pushing the first contact 7 of the elastic conductive sheet 6 to fit tightly with the second contact 13 of the second fixed plate 4, thus completing the circuit. When the contact is closed, the second horizontal plate 22 of the hook 2 continues to be pressed down by the concave part. Its edge forms a lever with the screw as the fulcrum, applying a secondary downward pressure to the elastic conductive sheet 6, further pressing the contact. At this time, the first fixed plate 5 and the second fixed plate 4 are in a conductive state.

[0044] Contact separation: Motor 1 drives the rotating wheel 8 to rotate clockwise in the reverse direction. The protrusion of the rotating wheel 8 contacts the first horizontal plate 21 of the hook 2 and lifts it up. When the second horizontal plate 22 of the hook 2 is lifted up, the second horizontal plate 22 pushes the elastic conductive sheet 6 upward, the spring 10 is compressed and contracts, forcing the first contact 7 to separate from the second contact 13, and the circuit is broken.

[0045] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the methods, systems, and devices described above are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A device for controlling the on / off switching of an automotive circuit driven by a motor, characterized in that, include: Mounting base plate, motor, rotating wheel, hook, elastic conductive sheet, first fixing plate and second fixing plate; The motor is fixed to the mounting base plate, and its output shaft is connected to the rotating wheel; the rotating wheel has an extension section extending outward from its periphery, the extension section bends inward to form a concave part, and its outer side forms a convex part. The hook includes a first horizontal plate and a second horizontal plate that are parallel to each other and are connected by a vertical plate. The first horizontal plate is attached to the extension of the rotating wheel. One end of the elastic conductive sheet is fixed to the first fixing plate, and the other end extends to the top of the second fixing plate. The elastic conductive sheet is provided with multiple through first contacts. A spring is provided above each first contact. The upper end of the spring is fixed to the fixing structure of the mounting base plate, and the lower end elastically abuts against the first contact or the elastic conductive sheet. The second fixing plate is provided with a second contact point corresponding to the position of the first contact point; The second horizontal plate below the hook is located between the elastic conductive sheet and the second fixing plate, and is fixed to the elastic conductive sheet. It has a hollow area corresponding to the first contact point.

2. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 1, characterized in that, The free end of the elastic conductive sheet has multiple cuts, dividing the free end into several independent elastic arms, with each first contact point fixedly penetrating the end of an elastic arm.

3. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 2, characterized in that, Multiple cuts are evenly distributed along the width of the elastic conductive sheet, and adjacent cuts are parallel to each other.

4. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 1, characterized in that, The rotating wheel has two symmetrical outward extensions around its periphery, forming an overall inverted S-shape.

5. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 1, characterized in that, One end of the second horizontal plate is fixedly connected to the bottom of the vertical plate, and the other end is fixedly connected to the middle of the elastic conductive sheet by riveting or bolting.

6. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 1, characterized in that, The fixing structure includes a spring baffle and two first mounting posts fixed above the mounting base plate. The spring baffle is horizontally fixed between the two first mounting posts, and the upper end of the spring is fixed to the lower surface of the spring baffle.

7. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 1, characterized in that, The first fixing plate and the second fixing plate are fixedly installed on the mounting base plate.

8. The device for controlling the on / off state of a motor-driven automotive circuit according to claim 1, characterized in that, A second mounting column is fixed above the mounting base plate, and the motor is mounted on the second mounting column by bolts.