A limit switch and a vehicle having it
By using the magnetic field superposition technology of magnets and coils in the limit switch, combined with the slider and groove structure, the noise and jamming problems of the limit switch are solved, and a low-noise and high-efficiency limit switch design is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AVATR CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-03
AI Technical Summary
Currently, limit switches in electric door systems suffer from problems such as high operating noise and lag during manual operation, resulting in a poor user experience.
A magnet is placed on the first limiting shaft of the limiter, and a coil is placed on the limiting housing. The movement of the limiting shaft is achieved by controlling the superposition of magnetic fields through current, which avoids noise and resistance in the transmission mechanism. The sliding block and groove structure improves the reliability of movement.
It significantly reduces the noise and internal resistance of the limit switch, improves the working efficiency of the limit switch, and enhances the flexibility and reliability of the limit switch.
Smart Images
Figure CN224452554U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of limiting device technology, and more particularly to a limiter and a vehicle having the same. Background Technology
[0002] With increasingly fierce competition in the passenger vehicle market, convenient features that enhance user comfort are becoming more widespread. Electric doors, as a premium feature in high-end luxury vehicles, provide users with a superior entry and exit experience. Currently, limit switches are the components in electric door systems responsible for outputting the driving force, enabling the door to open, close, and stop electrically. However, current limit switches suffer from problems such as high operating noise and manual operation lag, resulting in a poor user experience. Utility Model Content
[0003] In view of this, the present application provides a limiter that, while realizing the movement of the moving part relative to the fixed part, significantly reduces the noise and internal resistance of the limiter and improves the working efficiency of the limiter.
[0004] This application also proposes a vehicle that includes the aforementioned limiter.
[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:
[0006] In a first aspect, embodiments of this application provide a limiter, which is used to limit the distance between a fixed member and a moving member and includes a first limiting shaft and a limiting housing. The first limiting shaft is connected to the fixed member. The limiting housing has a limiting hole that extends through the limiting housing along its length. One end of the first limiting shaft, axially away from the fixed member, is movably inserted into the limiting hole. The limiting housing is connected to the moving member. A magnet is provided on the first limiting shaft, and a coil is provided on the limiting housing.
[0007] The limiter provided in this application embodiment has a magnet on a first limiting shaft and a coil on a limiting shell. The first limiting shaft is connected to a fixed member, and the limiting shell is connected to a moving member. The axial end of the first limiting shaft away from the fixed member is movably inserted into a limiting hole. When the coil is energized, it generates a magnetic field. The magnetic field generated by the coil is superimposed on the magnetic field of the magnet, causing the first limiting shaft where the magnet is located to move, thereby realizing the movement of the moving member relative to the fixed member. This significantly reduces the noise and internal resistance of the limiter and improves its working efficiency. Furthermore, by changing the direction of the current in the coil, the magnetic field generated by the coil can be changed, thereby causing the first limiting shaft where the magnet is located to move in different directions, thus satisfying the movement of the moving member in different directions.
[0008] In one possible implementation of this application, there are multiple magnets arranged sequentially along the axial direction of the first limiting shaft. The N pole and S pole of the same magnet are arranged opposite each other along the radial direction of the first limiting shaft. Along the axial direction of the first limiting shaft, the N pole of one magnet and the S pole of another magnet are adjacent to each other. There are multiple coils controlled individually. Along the axial direction of the first limiting shaft, the distance between the center points of two adjacent magnets is the same as the distance between the center points of two adjacent coils.
[0009] In one possible implementation of this application, one of the outer peripheral wall of the first limiting shaft and the inner peripheral wall of the limiting housing is provided with a slider, and the other is provided with a sliding groove. Both the slider and the sliding groove extend along the axial direction of the first limiting shaft, and the slider is movably disposed in the sliding groove along the axial direction of the first limiting shaft.
[0010] In one possible implementation of this application, the limiter further includes a first bracket, which is connected to the fixing member, and the first bracket and the first limiting shaft are rotatably connected via a first rotating shaft.
[0011] In one possible implementation of this application, the first bracket is connected to the fixing member by fasteners.
[0012] In one possible implementation of this application, the limiter further includes a second bracket connected to the moving member, and the second bracket and the limiting housing are rotatably connected via a second rotating shaft, wherein the axes of the first rotating shaft and the second rotating shaft are parallel.
[0013] In one possible implementation of this application, there are two second rotating shafts, which are coaxially arranged and located on opposite sides of the limiting housing.
[0014] In one possible implementation of this application, the second bracket is connected to the moving member by fasteners.
[0015] In one possible implementation of this application, along the axial direction of the first limiting shaft, the second bracket is disposed at one end of the limiting housing near the first bracket.
[0016] The vehicle according to an embodiment of this application includes a door, a side panel assembly, and the aforementioned limiter, wherein the door is rotatably connected to the limiter housing; and the side panel assembly is rotatably connected to the first limiter shaft.
[0017] According to the vehicle embodiment of this application, a magnet is provided on the first limiting shaft, and a coil is provided on the limiting housing. The first limiting shaft is connected to a fixed member, and the limiting housing is connected to a moving member. The axial end of the first limiting shaft away from the fixed member is movably inserted into a limiting hole. When the coil is energized, it generates a magnetic field. The magnetic field generated by the coil is superimposed on the magnetic field of the magnet, causing the first limiting shaft where the magnet is located to move, thereby realizing the movement of the moving member relative to the fixed member. This significantly reduces the noise and internal resistance of the limiter and improves the working efficiency of the limiter. Furthermore, by changing the direction of the current in the coil, the magnetic field generated by the coil can be changed, thereby causing the first limiting shaft where the magnet is located to move in different directions, thus satisfying the movement of the moving member in different directions. Attached Figure Description
[0018] Figure 1 A perspective view of the limiter provided in the embodiments of this application;
[0019] Figure 2 Right view of the limiter provided in an embodiment of this application.
[0020] Figure label:
[0021] 100. Limit switch;
[0022] 1. First limiting axis; 11. Slider;
[0023] 2. Limiting housing; 21. Slide groove;
[0024] 3. First support; 4. First pivot; 5. Second support; 6. Second pivot. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.
[0026] In the embodiments 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.
[0027] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.
[0028] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.
[0029] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0030] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0031] This application provides a vehicle. It should be noted that the vehicle in this application can refer to large vehicles, small vehicles, special-purpose vehicles, etc. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Generally, vehicles are equipped with doors and side panels. When the vehicle is stationary and the door is opened, the side panel assembly is stationary relative to the ground, while the door moves, thus opening the door.
[0032] It should be noted that the opening method of the car door is not limited in this embodiment. For example, the car door can open by rotating or sliding. The control method of the car door is not limited; the car door can be opened by button control, central touch screen control, remote control via mobile APP, voice control, etc.
[0033] With increasingly fierce competition in the passenger vehicle market, convenient features that enhance user comfort are becoming more widespread. Electric doors, as a premium feature in high-end luxury vehicles, provide users with a superior entry and exit experience. Currently, limit switches are the components in electric door systems responsible for outputting the driving force, enabling the door to open, close, and hover electrically. Their structure generally consists of a drive motor, transmission mechanism, push rod, side panel mounting bracket, door mounting bracket, housing, connectors, and wiring harness. The connectors connect to the electric door controller via the wiring harness. The electric door controller outputs drive voltage and current within a specific range and frequency according to a preset strategy, causing the drive motor to rotate. The motor's output torque is converted into a driving force along the push rod axis through the transmission mechanism, propelling the door. Current limit switches suffer from problems such as high operating noise and manual operation stuttering, resulting in a poor user experience. The noise originates from the motor's operation and the transmission mechanism, while the manual operation stuttering mainly stems from internal resistance in the transmission mechanism and motor resistance.
[0034] The limiter 100 provided in this application embodiment can be used to control the relative position of the door and the side panel assembly to meet the user's need to open the door.
[0035] Based on this, refer to Figure 1 This application provides a limiter 100, which includes a first limit shaft 1 and a limit housing 2.
[0036] To better illustrate the limiter 100 provided in the embodiments of this application, the limiter 100 is used to limit the distance between the fixed member and the moving member, and to realize the movement of the moving member relative to the fixed member by changing the relative position of the moving member and the fixed member.
[0037] Furthermore, the first limiting shaft 1 is connected to the fixing member, and the limiting housing 2 is provided with a limiting hole, which is along the length direction of the limiting housing 2 (e.g., ...). Figure 1 The first direction shown) penetrates the limiting housing 2, and the axial direction of the first limiting shaft 1 (as shown) Figure 1 The end of the moving part (shown in the first direction) away from the fixed part is movably inserted into the limiting hole, and the limiting housing 2 is connected to the moving part. By moving the first limiting shaft 1 in the limiting hole, the first limiting shaft 1 pushes the fixed part, the fixed part remains stationary, the first limiting shaft 1 applies a reaction force to the limiting housing 2, and the limiting housing 2 drives the moving part to move, thereby realizing the movement of the moving part relative to the fixed part.
[0038] The first limiting shaft 1 is equipped with a magnet, and the limiting housing 2 is equipped with a coil. When the coil is energized, it generates a magnetic field. The magnetic field generated by the coil is superimposed on the magnetic field of the magnet, causing the first limiting shaft 1, where the magnet is located, to move, thus realizing the movement of the moving part relative to the fixed part. The first limiting shaft 1 directly serves as the output torque of the push rod. The limiter 100 eliminates the noise and resistance of the transmission mechanism, significantly reducing the noise and internal resistance of the limiter 100 and improving its working efficiency.
[0039] By changing the direction of the current in the coil, the magnetic field generated by the coil can be changed, thereby causing the first limiting shaft 1 where the magnet is located to move in different directions, thus satisfying the movement of the moving part in different directions.
[0040] Furthermore, in this embodiment, the material of the magnet is not limited, as long as it can generate a magnetic field.
[0041] According to the embodiments of this application, the limiter 100 has a magnet on the first limiting shaft 1 and a coil on the limiting housing 2. The first limiting shaft 1 is connected to a fixed member, and the limiting housing 2 is connected to a moving member. The axial end of the first limiting shaft 1 away from the fixed member is movably inserted into a limiting hole. When the coil is energized, it generates a magnetic field. The magnetic field generated by the coil is superimposed on the magnetic field of the magnet, causing the first limiting shaft 1, where the magnet is located, to move. This enables the moving member to move relative to the fixed member, significantly reducing the noise and internal resistance of the limiter 100 and improving its working efficiency. Furthermore, by changing the direction of the current in the coil, the magnetic field generated by the coil can be changed, thereby causing the first limiting shaft 1, where the magnet is located, to move in different directions, thus satisfying the movement of the moving member in different directions.
[0042] In this embodiment, the fixed component is the side panel assembly, and the movable component is the vehicle door.
[0043] In some embodiments of this application, there are multiple magnets, which are arranged sequentially along the axial direction of the first limiting shaft 1. The N pole and S pole of the same magnet are arranged opposite each other along the radial direction of the first limiting shaft 1. Along the axial direction of the first limiting shaft 1, the N pole of one magnet and the S pole of another magnet are adjacent to each other. There are multiple coils, which are controlled individually. Along the axial direction of the first limiting shaft 1, the distance between the center points of two adjacent magnets is the same as the distance between the center points of two adjacent coils.
[0044] Understandably, when the north pole of one magnet and the south pole of the other are adjacent, the first limiting shaft 1 can form a periodically changing magnetic field. When multiple coils on the limiting shell 2 are energized to generate a traveling wave magnetic field, the secondary magnetic field interacts with the primary magnetic field, producing continuous attractive and repulsive forces, thus preventing the thrust from being interrupted. Simultaneously, it prevents the magnetic poles of the multiple magnets in the first limiting shaft 1 from aligning in the same direction, prevents the magnetic fields between adjacent magnets from canceling each other out, prevents a sudden drop in magnetic flux density, and prevents the inability to generate effective thrust.
[0045] Furthermore, refer to Figure 1 and Figure 2 In some embodiments of this application, one of the outer peripheral wall of the first limiting shaft 1 and the inner peripheral wall of the limiting housing 2 is provided with a slider 11, and the other is provided with a groove 21. Both the slider 11 and the groove 21 extend along the axial direction of the first limiting shaft 1, and the slider 11 is movably disposed in the groove 21 along the axial direction of the first limiting shaft 1. This allows the first limiting shaft 1 to move under the guidance of the groove 21 when moving along the axial direction of the first limiting shaft 1, making the movement of the first limiting shaft 1 along the axial direction of the first limiting shaft 1 more reliable. At the same time, it can avoid relative rotation between the first limiting shaft 1 and the limiting housing 2, avoid changes in the magnetic field position caused by the rotation of the magnet, avoid affecting the superposition effect of the magnetic field generated by the coil and the magnetic field of the magnet, and increase the reliability of the movement of the first limiting shaft 1.
[0046] In this embodiment, the slider 11 is disposed on the outer peripheral wall of the first limiting shaft 1 and extends along the axial direction of the first limiting shaft 1, and the groove 21 is disposed on the inner peripheral wall of the limiting hole in the limiting housing 2 and extends along the axial direction of the first limiting shaft 1.
[0047] In some embodiments of this application, reference is made to Figure 1 The limiter 100 also includes a first bracket 3, which is connected to a fixing member. The first bracket 3 and the first limiting shaft 1 are rotatably connected via a first rotating shaft 4, allowing free rotation between the first bracket 3 and the first limiting shaft 1, thus improving the flexibility of the first limiting shaft 1. Simultaneously, this enhances the load-bearing capacity of the first limiting shaft 1 and increases the reliability of the connection between the first limiting shaft 1 and the first bracket 3.
[0048] In this embodiment, the fixed component is the side panel assembly, and the movable component is the car door. When the car door rotates relative to the side panel assembly, the first rotating shaft 4 realizes the rotational connection between the first bracket 3 and the first limiting shaft 1. When the car door rotates, the torsional force on the first limiting shaft 1 can be offset by the first rotating shaft 4, thereby realizing the rotation of the car door.
[0049] In some embodiments of this application, the first bracket 3 is connected to the fixing member by fasteners. The connection between the first bracket 3 and the fixing member is relatively simple and reliable, and is easy to disassemble and replace, reducing the maintenance and replacement cost of the limiting member.
[0050] In some embodiments of this application, reference is made to Figure 1 The limiter 100 also includes a second bracket 5, which is connected to the moving part. The second bracket 5 and the limiting housing 2 are rotatably connected via a second rotating shaft 6, allowing free rotation between the second bracket 5 and the limiting housing 2, thus improving the flexibility of the limiting housing 2. Simultaneously, it can improve the load-bearing capacity of the limiting housing 2 and increase the reliability of the connection between the limiting housing 2 and the second bracket 5.
[0051] In this embodiment, the fixed component is the side panel assembly, and the moving component is the car door. When the car door rotates relative to the side panel assembly, the second rotating shaft 6 realizes the rotational connection between the second bracket 5 and the limiting shell 2. When the car door rotates, the first limiting shaft 1 is directly subjected to torsion, and the limiting shell 2 is subjected to torsion due to the influence of the first limiting shaft 1. The torsional force suffered by the limiting shell 2 can be offset by the second rotating shaft 6, thereby realizing the rotation of the car door.
[0052] The axes of the first rotating shaft 4 and the second rotating shaft 6 are parallel. It can be understood that the slider 11 on the first limiting shaft 1 and the groove 21 in the limiting housing 2 restrict the relative rotation of the first limiting shaft 1 and the limiting housing 2. When at least one of the first limiting shaft 1 and the limiting housing 2 is subjected to torsional force, the first limiting shaft 1 and the limiting housing 2 will synchronously show a rotational tendency. The parallel axes of the first rotating shaft 4 and the second rotating shaft 6 can synchronously counteract the torsional force of the first limiting shaft 1 and the limiting housing 2, avoid the first limiting shaft 1 and the limiting housing 2 from being deformed or damaged due to torsional force, and increase the reliability of the limiter 100.
[0053] In some embodiments of this application, reference is made to Figure 1 There are two second rotating shafts 6, which are coaxially arranged and located on opposite sides of the limiting housing 2. This allows for rotational connection between the limiting housing 2 and the second bracket 5 at two points, increasing the reliability of the connection between the second bracket 5 and the limiting housing 2.
[0054] In some embodiments of this application, the second bracket 5 is connected to the moving part by fasteners. The connection between the second bracket 5 and the moving part is relatively simple and reliable, and is easy to disassemble and replace, reducing the maintenance and replacement cost of the limiting part.
[0055] In some embodiments of this application, reference is made to Figure 1 Along the axial direction of the first limiting shaft 1, the second bracket 5 is located at the end of the limiting housing 2 close to the first bracket 3, and the end of the limiting housing 2 away from the first bracket 3 can be located inside the car door to avoid the limiter 100 occupying too much space.
[0056] In addition, the part of the limiting shell 2 that is far from the second bracket 5 may shift downward under the action of gravity. The second bracket 5 is located at the end of the limiting shell 2 that is close to the first bracket 3, which can prevent the end of the limiting shell 2 that allows the first limiting shaft 1 to enter and exit from shifting downward, making the cooperation between the first limiting shaft 1 and the limiting shell 2 more reliable.
[0057] The vehicle according to the embodiments of this application includes a door, a side panel assembly, and a limiter 100. The door is rotatably connected to the limiter housing 2, and the side panel assembly is rotatably connected to the first limiter shaft 1.
[0058] According to the vehicle embodiment of this application, a magnet is provided on the first limiting shaft 1, and a coil is provided on the limiting housing 2. The first limiting shaft 1 is connected to a fixed member, and the limiting housing 2 is connected to a moving member. The axial end of the first limiting shaft 1 away from the fixed member is movably inserted into a limiting hole. When the coil is energized, it generates a magnetic field. The magnetic field generated by the coil is superimposed on the magnetic field of the magnet, causing the first limiting shaft 1 where the magnet is located to move, thereby realizing the movement of the moving member relative to the fixed member. This significantly reduces the noise and internal resistance of the limiter 100 and improves the working efficiency of the limiter 100. Furthermore, by changing the direction of the current in the coil, the magnetic field generated by the coil can be changed, thereby causing the first limiting shaft 1 where the magnet is located to move in different directions, thus satisfying the movement of the moving member in different directions.
[0059] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A limiter characterized by, The distance between the limiting and fixing components and the moving components includes: The first limiting shaft (1) is connected to the fixing member; The limiting housing (2) is provided with a limiting hole, which penetrates the limiting housing (2) along the length direction of the limiting housing (2). The end of the first limiting shaft (1) away from the fixing member in the axial direction is movably inserted into the limiting hole. The limiting housing (2) is connected to the moving member. The first limiting shaft (1) is provided with a magnet, and the limiting outer shell (2) is provided with a coil.
2. The limiter of claim 1, wherein There are multiple magnets, which are arranged sequentially along the axial direction of the first limiting shaft (1). The N pole and S pole of the same magnet are arranged opposite each other along the radial direction of the first limiting shaft (1). Along the axial direction of the first limiting shaft (1), the N pole of one magnet and the S pole of the other magnet are adjacent to each other in two adjacent magnets. There are multiple coils, which are controlled individually. Along the axial direction of the first limiting shaft (1), the distance between the center points of two adjacent magnets is the same as the distance between the center points of two adjacent coils.
3. The position limiter of claim 1, wherein One of the outer peripheral wall of the first limiting shaft (1) and the inner peripheral wall of the limiting shell (2) is provided with a slider (11), and the other is provided with a groove (21). The slider (11) and the groove (21) both extend along the axial direction of the first limiting shaft (1), and the slider (11) is movably disposed in the groove (21) along the axial direction of the first limiting shaft (1).
4. The limiter according to claim 1, characterized in that, Also includes: The first bracket (3) is connected to the fixing member, and the first bracket (3) and the first limiting shaft (1) are rotatably connected through the first rotating shaft (4).
5. A limiter according to claim 4, wherein The first bracket (3) is connected to the fixing member by fasteners.
6. The position limiter of claim 4, wherein Also includes: The second bracket (5) is connected to the moving part. The second bracket (5) and the limiting shell (2) are rotatably connected by the second rotating shaft (6). The axes of the first rotating shaft (4) and the second rotating shaft (6) are parallel.
7. A limiter according to claim 6, characterised in that There are two second rotating shafts (6), which are coaxially arranged and located on opposite sides of the limiting shell (2).
8. The limiter of claim 6, wherein The second bracket (5) is connected to the moving part by fasteners.
9. The limiter of claim 6 wherein, Along the axial direction of the first limiting shaft (1), the second bracket (5) is disposed at one end of the limiting shell (2) near the first bracket (3).
10. A vehicle characterized by comprising: include: The limiter (100) according to any one of claims 1-9; The car door is rotatably connected to the limiting housing (2); Side panel assembly, which is rotatably connected to the first limiting shaft (1).