Seat and vehicle with adjustable backrest feeling
By installing electromagnets and magnetic components between the seat backrest and cushion, and adjusting the magnetic force using a control module, the push-back feeling can be personalized, solving the problem that existing vehicles cannot adjust the push-back feeling and improving driving pleasure and riding experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2022-07-20
- Publication Date
- 2026-06-05
AI Technical Summary
Existing vehicles cannot provide personalized adjustments to the acceleration feel, resulting in a lack of driving pleasure and a poor passenger experience.
Electromagnets and magnetic components are installed between the backrest and the cushion of the seat body. The control module controls the switching power supply module to adjust the magnetic force generated by the electromagnet on the magnetic components according to the acceleration signal, so that the cushion moves closer to or away from the backrest, thereby adjusting the push-back feeling.
By adjusting the magnetic force to move the backrest, different levels of push-back sensation are provided, enhancing the driving pleasure and user experience for drivers and passengers.
Smart Images
Figure CN117465306B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more particularly to an adjustable seat and vehicle with adjustable push-back feel. Background Technology
[0002] Currently, electric vehicles are gradually becoming mainstream, and the number of electric vehicle drivers will continue to grow in the future. Electric vehicles have strong acceleration performance, and the push-back feeling during acceleration brings a new driving pleasure to both drivers and passengers. Some passengers prefer a stronger push-back feeling, while others prefer a weaker one. However, existing vehicles only improve and optimize seat support and comfort, and cannot provide personalized adjustments to the push-back feeling, resulting in a lack of driving pleasure and a poor riding experience. Summary of the Invention
[0003] In view of this, the main purpose of this application is to propose a seat and vehicle with adjustable push-back feeling, which aims to solve the problem that existing vehicles only improve and optimize the seat's wrapping and comfort, but cannot achieve personalized adjustment of push-back feeling, thus lacking driving pleasure.
[0004] To achieve the above objectives, this application provides an adjustable backrest seat, comprising a seat body, an electromagnet, a magnetic element, a switching power supply module, and a control module. The seat body includes a seat cushion, a backrest, and a backrest board. The backrest is disposed on the side of the backrest board facing the seat cushion and is movable towards or away from the backrest board. The electromagnet is fixedly connected to the backrest board and located between the backrest board and the backrest cushion. The magnetic element is connected to the backrest cushion and directly opposite the electromagnet. The switching power supply module is electrically connected to the electromagnet and provides an electrical signal to the electromagnet. The control module is electrically connected to the switching power supply module and acquires and generates a corresponding control signal based on the acceleration signal to control the switching power supply module to output a corresponding electrical signal, thereby adjusting the magnetic force generated by the electromagnet on the magnetic element, and causing the magnetic element to move the backrest cushion towards or away from the backrest board based on the magnetic force.
[0005] The adjustable push-back sensation seat provided in this application utilizes an electromagnet mounted on the backrest of the seat body, a magnetic element mounted on the seat cushion directly opposite the electromagnet, and a control module that controls a switching power supply module based on an acceleration signal to adjust the magnetic force generated by the electromagnet on the magnetic element. This causes the magnetic element to move the cushion closer to or further away from the backrest based on the magnetic force, thereby allowing the driver and passengers to experience different degrees of push-back sensation, bringing driving pleasure and enhancing the user experience.
[0006] Optionally, the adjustable push-back seat further includes a central control multimedia module electrically connected to the control module. The central control multimedia module is used to receive an intensity level signal input by the user, and the control module is used to generate a corresponding control signal based on the acceleration signal and the intensity level signal.
[0007] Optionally, the control module pre-records a mapping table between multiple acceleration data and multiple control data for each intensity level. The control module is used to query the acceleration data that is closest to the acceleration signal value at the user-set intensity level and the corresponding control data, and generate a corresponding control signal based on the control data.
[0008] Optionally, the switching power supply module includes a DC-DC conversion circuit, the control signal output by the control module includes a PWM signal, the control data includes the duty cycle of the PWM signal, and the electrical signal output by the switching power supply module is a voltage signal.
[0009] Optionally, the adjustable push-back seat further includes an adjustment module electrically connected between the DC-DC conversion circuit and the electromagnet. The adjustment module is used to adjust the magnitude of the current generated on the electromagnet by the voltage signal output by the DC-DC conversion circuit, thereby adjusting the magnitude of the magnetic force generated by the electromagnet on the magnetic element.
[0010] Optionally, the adjustable backrest seat may further include an elastic component connecting the backrest and the magnetic element.
[0011] Optionally, the adjustable backrest seat further includes a connecting bracket, which includes a connecting portion and a limiting portion that are perpendicular to each other. One end of the elastic member is connected to the backrest through the connecting portion, and the other end of the elastic member is connected to the magnetic element. The limiting portion and the magnetic element are movably connected, and the limiting portion is used to restrict the movement of the magnetic element along the extension and retraction direction of the elastic member.
[0012] Optionally, the limiting part includes a limiting plate, the limiting plate is provided with a groove extending along the extension and retraction direction of the elastic member, the magnetic element is provided with a sliding part that cooperates with the groove, and the groove is used to restrict the sliding part of the magnetic element from sliding along the groove.
[0013] Optionally, the adjustment module includes a sliding rheostat.
[0014] This application also provides a vehicle, the vehicle including a vehicle body and the aforementioned adjustable push-back seat, wherein the adjustable push-back seat is installed in the vehicle body.
[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of an adjustable backrest seat provided in an embodiment of this application.
[0017] Figure 2 This is a schematic diagram of the circuit structure of an adjustable backrest seat provided in an embodiment of this application. The adjustable backrest seat includes a switching power supply module.
[0018] Figure 3 yes Figure 1 The diagram shows a cross-sectional view of the structure along tangent AA.
[0019] Figure 4 This is a schematic diagram of a control data calibration table provided in an embodiment of this application.
[0020] Figure 5 yes Figure 2 The diagram shows a circuit structure of a switching power supply module.
[0021] The annotations in the attached figures are explained as follows:
[0022] Adjustable push-back seats 10
[0023] Seat body 100
[0024] Board 101
[0025] Cushion 102
[0026] Base 103
[0027] Seat Cushion 1031
[0028] Electromagnet 200
[0029] Magnetic Components 300
[0030] Sliding part 301
[0031] Switching power supply module 400
[0032] Control Module 500
[0033] Central control multimedia module 600
[0034] Elastic component 700
[0035] Connecting bracket 800
[0036] Connector 801
[0037] Limiting part 802
[0038] 8021 Slide
[0039] Adjustment module 900
[0040] Capacitor C
[0041] Inductor L
[0042] Diode D
[0043] Switching transistor T
[0044] Power supply E
[0045] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0046] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0047] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0048] This application provides a vehicle (not shown in the figures), the vehicle including a vehicle body (not shown in the figures) and an adjustable seat 10 with adjustable backrest pressure, wherein the adjustable seat 10 is installed in the vehicle body. Please refer to [link to relevant documentation]. Figures 1-2 The adjustable push-back seat 10 includes a seat body 100, an electromagnet 200, a magnetic element 300, a switching power supply module 400, and a control module 500. It should be noted that the adjustable push-back seat 10 provided in this application can be applied not only to vehicles but also to driving simulators.
[0049] In this embodiment, the seat body 100 includes a backrest 101, a cushion 102, and a base 103. A seat cushion 1031 is mounted on the base 103. The cushion 102 is disposed on the side of the backrest 101 facing the base 103. One end (the bottom end) of the cushion 102 is connected to the seat cushion 1031 on the base 103. The cushion 102 and the backrest 101 are positioned opposite each other with a gap between them. The cushion 102 can move towards or away from the backrest 101. In this embodiment, the cushion 102 can be made of an elastic material, allowing it to move towards or away from the backrest 101 when it undergoes elastic deformation. In other embodiments, the cushion 102 may also be made of a rigid material. The other end (i.e. the top end) of the cushion 102 is movably connected to the backrest 101. The cushion 102 can rotate relative to the seat cushion 1031, thereby moving towards or away from the backrest 101.
[0050] Furthermore, the electromagnet 200 is fixedly connected to the backrest 101, and the magnetic element 300 is connected to the cushion 102. The electromagnet 200 and the magnetic element 300 are arranged opposite each other at a distance and are both located in the gap between the backrest 101 and the cushion 102. The magnetic element 300 can be a permanent magnet.
[0051] Furthermore, the switching power supply module 400 is electrically connected to the electromagnet 200, and the switching power supply module 400 provides an electrical signal to the electromagnet 200. The electromagnet 200 generates a magnetic field based on the received electrical signal, thereby generating a magnetic force on the magnetic element 300, which in turn causes the magnetic element 300 to move the cushion 102 towards or away from the backrest 101 based on the magnetic force. Exemplarily, the switching power supply module 400 can be a controlled current source, used to provide a current signal to the electromagnet 200. The switching power supply module 400 can also be a controlled voltage source, used to provide a voltage signal to the electromagnet 200; this is not limited here.
[0052] Furthermore, the adjustable backrest seat 10 also includes an elastic member 700 connected between the backrest 102 and the magnetic element 300, the extension and retraction direction of the elastic member 700 being perpendicular to the backrest 102. The adjustable backrest seat 10 also includes a connecting bracket 800, which includes a connecting portion 801 and a limiting portion 802 that are perpendicular to each other. One end of the elastic member 700 is fixedly connected to the backrest 102 via the connecting portion 801, and the other end of the elastic member 700 is fixedly connected to the magnetic element 300. The limiting portion 802 is movably connected to the magnetic element 300, and the limiting portion 802 is used to restrict the movement of the magnetic element 300 along the extension and retraction direction of the elastic member 700 (i.e., to prevent the magnetic element 300 from moving perpendicular to the extension and retraction direction of the elastic member 700). It is understood that the elastic component 700 can convert the magnetic force of the electromagnet 200 on the magnetic element 300 into elastic force, and transmit it to the cushion 102 through the connecting part 801, thereby causing the cushion 102 to move towards or away from the backrest 101. Exemplarily, the elastic component 700 includes a spring. The elastic component 700 can buffer the magnetic force, making the thrust of the cushion 102 on the driver's or passenger's back more gentle and providing greater comfort.
[0053] Please see Figure 3 In this embodiment, the limiting part 802 includes a limiting plate, on which a groove 8021 extending along the extension direction of the elastic member 700 is provided. The magnetic element 300 is provided with a sliding part 301 that cooperates with the groove 8021. The groove 8021 is used to restrict the sliding part 301 of the magnetic element 300 from sliding along the groove 8021, thereby restricting the magnetic element 300 to move only along the extension direction of the elastic member 700. Preferably, the groove 8021 does not penetrate the limiting plate, that is, the length of the groove 8021 in its extension direction is less than the length of the limiting plate. This prevents the sliding part 301 of the magnetic element 300 from sliding out of the groove 802. In this way, the elastic member 700 can convert all the magnetic force into elastic force and act perpendicularly on the cushion 102, resulting in higher transmission efficiency. Of course, in other embodiments, the limiting part 802 can also be other components with limiting functions. For example, the limiting part 802 can also be a limiting rod. Correspondingly, the magnetic element 300 is provided with a through hole that cooperates with the limiting rod. The limiting rod passes through the through hole, thereby restricting the magnetic element 300 to move only along the extension and retraction direction of the elastic member 700.
[0054] Furthermore, such as Figure 2As shown, the control module 500 is electrically connected to the switching power supply module 400. The control module 500 acquires and generates a corresponding control signal based on the vehicle's acceleration signal to control the switching power supply module 400 to output a corresponding electrical signal. This adjusts the magnetic force generated by the electromagnet 200 on the magnetic element 300, causing the magnetic element 300 to move the cushion 102 closer to or further away from the backrest 101 based on the magnetic force. The control module 500 can be the vehicle's overall controller or an independently configured microcontroller unit (MCU), single-chip microcomputer, digital signal processor (DSP), or other control device. For example, the vehicle also includes an acceleration sensor (not shown), throttle (not shown), and speed sensor (not shown). The acceleration signal can be measured by the acceleration sensor or calculated by the vehicle's overall controller based on at least one of the throttle depth signal, current vehicle speed signal, and current gear signal. Understandably, when the vehicle accelerates, if the magnetic force received by the magnetic element 300 is a repulsive force, it will cause the cushion 102 to move away from the backrest 101, thereby increasing the pressure of the cushion 102 on the driver's and passenger's back, resulting in a stronger push-back sensation. The stronger the magnetic force, the stronger the push-back sensation. Conversely, if the magnetic force received by the magnetic element 300 is an attractive force, it will cause the cushion 102 to move closer to the backrest 101, thereby reducing the pressure of the cushion 102 on the driver's and passenger's back, resulting in a weaker push-back sensation. Again, the stronger the magnetic force, the weaker the push-back sensation. This allows for the satisfaction of different needs regarding the push-back sensation for drivers and passengers.
[0055] In this embodiment, the adjustable push-back seat 10 further includes a central control multimedia module 600 electrically connected to the control module 500. The central control multimedia module 600 receives an intensity level signal input by the user, and the control module 500 generates a corresponding control signal based on the acceleration signal and the intensity level signal. Specifically, in this embodiment, the control module 500 pre-records a mapping table between multiple acceleration data and multiple control data at each intensity level. The control module 500 queries the acceleration data closest to the acceleration signal value at the user-set intensity level and the corresponding control data, and generates a corresponding control signal based on the control data. For example, as shown... Figure 4The control data calibration table shown includes intensity levels Q1, Q2, ..., Qm. Under each intensity level, there is a mapping table between n acceleration data points (including a1, a2, ..., an) and n control data points. Assuming the driver and passengers set the intensity level to Q2 via the central multimedia module 600, when the control module 600 receives an acceleration signal with a value of a0 (e.g., a0 is closest to a2), the control module 600 can look up the table to obtain the acceleration data point closest to a0, which is a2, and the corresponding control data point k22 for that acceleration data point a2 under intensity level Q2. The control module then generates the corresponding control signal based on the control data k22, where 1 ≤ m and 1 ≤ n. It can be understood that when the vehicle is under the same acceleration, the driver and passengers can set different intensity levels via the central multimedia module 600 according to their needs, thereby obtaining different degrees of acceleration sensation. It should be noted that the adjustable push-back seat 10 can not only provide the driver and passengers with different push-back experiences during the vehicle's acceleration, but also provide the user with a "simulated" push-back experience when the user selects the driving game mode, making it widely applicable.
[0056] Furthermore, the switching power supply module 400 includes a DC-DC conversion circuit, and the control signal output by the control module 500 includes a PWM (Pulse Width Modulation) signal. The control data includes the duty cycle α of the PWM signal. The electrical signal output by the switching power supply module 400 is a voltage signal. In other words, the value of the duty cycle α of the PWM signal is obtained by the control module 500 from a table based on the intensity level signal and the acceleration signal, for example, k22. Exemplarily, the DC-DC conversion circuit can be a Buck circuit (buck chopper circuit), a Boost circuit (boost chopper circuit), or a Buck-Boost circuit (buck-boost chopper circuit). Figure 5As shown, taking the DC-DC conversion circuit as an example, the Buck circuit includes a power supply E, a switching transistor T, a diode D, an inductor L, and a capacitor C. The power supply E can be the vehicle's battery. The control terminal of the switching transistor T is electrically connected to the control module 500, and the control terminal of the switching transistor T is used to receive the PWM signal output by the control module 500. The first connection terminal of the switching transistor T is electrically connected to the positive terminal of the power supply E. The second connection terminal of the switching transistor T is simultaneously electrically connected to the negative terminal of the diode and one end of the inductor L. The other end of the inductor L is electrically connected to one end of the capacitor C. The other end of the capacitor C is simultaneously electrically connected to the positive terminal of the diode D and the negative terminal of the power supply E. The two ends of the capacitor C constitute the output terminal of the switching power supply module 400, and the switching power supply module 400 outputs a voltage signal to the electromagnet 200 through its output terminal. According to the working principle of the Buck circuit, the voltage value U0 of the voltage signal output from the output terminal of the switching power supply module 400 is directly proportional to the duty cycle α of the PWM signal. The larger the duty cycle α of the PWM signal, the larger the voltage value U0 of the voltage signal; the smaller the duty cycle α of the PWM signal, the smaller the voltage value U0 of the voltage signal. Specifically, the relationship between U0 and the duty cycle α is: U0 = α * E, where E is the voltage value of the power supply E, and 0 ≤ α ≤ 1.
[0057] Furthermore, the adjustable push-back seat 10 also includes an adjustment module 900 electrically connected between the DC-DC conversion circuit and the electromagnet 200. The adjustment module 900 is used to adjust the magnitude of the current i generated by the voltage signal output by the switching power supply module 400 on the electromagnet 200. It is understood that the magnitude of the magnetic force generated by the electromagnet 200 on the magnetic element 300 is directly proportional to the current i flowing through the electromagnet 200. Therefore, the driver and passenger can adjust the magnitude of the magnetic force generated by the electromagnet 200 on the magnetic element 300 by adjusting the adjustment module 900, thereby obtaining different degrees of push-back sensation. For example, the adjustment module 900 includes a sliding rheostat, such as... Figure 1 As shown, the sliding rheostat is located on the side of the base 103 of the seat body 100. The driver and passenger can change the resistance value of the sliding rheostat by rotating the knob of the sliding rheostat, thereby adjusting the current i flowing through the electromagnet 200 and thus adjusting the intensity of the push-back feeling.
[0058] Assuming the resistance of the sliding rheostat is Rf and the resistance of the electromagnet 200 is R0, according to Kirchhoff's voltage law, the following relationship exists between the current i flowing through the electromagnet 200, the duty cycle α of the PWM signal, and the resistance Rf of the sliding rheostat:
[0059] i = U0 / (R0+Rf) = α*E / (R0+Rf)
[0060] Therefore, it can be seen that the current i flowing through the electromagnet 200 is positively correlated with the duty cycle α of the PWM signal and negatively correlated with the resistance value Rf of the sliding rheostat. Thus, drivers and passengers can obtain different degrees of push-back sensation by adjusting the intensity level and / or adjusting the adjustment module 900. This provides more adjustment methods, greater convenience, a wider adjustment range, and broader applicability.
[0061] The adjustable push-back seat 10 provided in this application uses an electromagnet 200 on the backrest 101 of the seat body 100 and a magnetic element 300 on the cushion 102 of the seat body 100 opposite to the electromagnet 200. The control module 500 controls the switching power supply module 400 to adjust the magnetic force generated by the electromagnet 200 on the magnetic element 300 according to the vehicle's acceleration signal. This causes the magnetic element 300 to move the cushion 102 closer to or away from the backrest 101 based on the magnetic force, thereby allowing the driver and passengers to experience different degrees of push-back sensation, bringing driving pleasure and improving the user experience.
[0062] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A seat with adjustable push-back feel, characterized in that, include: The seat body includes a seat cushion, a back cushion, and a backrest, wherein the back cushion is disposed on the side of the backrest facing the seat cushion, and the back cushion can move toward or away from the backrest. An electromagnet is fixedly connected to the backrest and located between the backrest and the cushion; A magnetic element is connected to the cushion and is directly opposite the electromagnet; A switching power supply module, electrically connected to the electromagnet, is used to provide an electrical signal to the electromagnet; and The control module is electrically connected to the switching power supply module. The control module is used to acquire and generate a corresponding control signal based on the acceleration signal to control the switching power supply module to output a corresponding electrical signal, thereby adjusting the magnetic force generated by the electromagnet on the magnetic element, so that the magnetic element drives the cushion to move closer to or away from the backrest based on the magnetic force.
2. The adjustable push-back seat as described in claim 1, characterized in that, The adjustable push-back seat also includes a central control multimedia module electrically connected to the control module. The central control multimedia module is used to receive the intensity level signal input by the user, and the control module is used to generate the corresponding control signal based on the acceleration signal and the intensity level signal.
3. The adjustable push-back seat as described in claim 2, characterized in that, The control module contains a pre-recorded mapping table between multiple acceleration data and multiple control data at various intensity levels; The control module is used to query the acceleration data that is closest to the acceleration signal value at the intensity level set by the user, as well as the control data corresponding to the acceleration data, and generate the corresponding control signal based on the control data.
4. The adjustable push-back seat as described in claim 3, characterized in that, The switching power supply module includes a DC-DC conversion circuit, the control signal output by the control module includes a PWM signal, the control data includes the duty cycle of the PWM signal, and the electrical signal output by the switching power supply module is a voltage signal.
5. The adjustable push-back seat as described in claim 4, characterized in that, The adjustable backrest seat also includes an adjustment module electrically connected between the DC-DC conversion circuit and the electromagnet. The adjustment module is used to adjust the magnitude of the current generated on the electromagnet by the voltage signal output by the DC-DC conversion circuit, thereby adjusting the magnitude of the magnetic force generated by the electromagnet on the magnetic element.
6. The adjustable push-back seat as described in claim 1, characterized in that, The adjustable backrest seat also includes an elastic component connecting the backrest and the magnetic element.
7. The adjustable push-back seat as described in claim 6, characterized in that, The adjustable backrest seat also includes a connecting bracket, which includes a connecting part and a limiting part that are perpendicular to each other. One end of the elastic member is connected to the backrest through the connecting part, and the other end of the elastic member is connected to the magnetic element. The limiting part and the magnetic element are movably connected, and the limiting part is used to restrict the movement of the magnetic element along the extension and retraction direction of the elastic member.
8. The adjustable push-back seat as described in claim 7, characterized in that, The limiting part includes a limiting plate, the limiting plate is provided with a groove extending along the extension and retraction direction of the elastic component, the magnetic element is provided with a sliding part that cooperates with the groove, and the groove is used to restrict the sliding part of the magnetic element from sliding along the groove.
9. The adjustable push-back seat as described in claim 5, characterized in that, The adjustment module includes a sliding rheostat.
10. A vehicle, characterized in that, include: Vehicle body; as well as The adjustable push-back seat as described in any one of claims 1-9, wherein the adjustable push-back seat is installed in the vehicle body.