Seat adjusting device, seat assembly and vehicle

Abstract

The utility model relates to a seat adjusting device, a seat assembly and a vehicle and relates to the technical field of vehicles, the seat adjusting device comprises a sliding rail assembly and a motor, the sliding rail assembly comprises a first sliding rail and a second sliding rail slidably connected to the first sliding rail, the first sliding rail is connected with a seat, and the motor drives the first sliding rail to slide on the second sliding rail; the motor comprises a rotor, a Hall sensor, an acquisition circuit, a counter and a processor, the rotor is sleeved with a magnetic ring, the Hall sensor can respond to magnetic field change of the magnetic ring and acquire magnetic field change information, and the acquisition circuit is electrically connected with the Hall sensor and generates a high-level signal and a low-level signal according to the magnetic field change information. The counter is electrically connected with the acquisition circuit and used for calculating the generation number of the high-level signals and / or the low-level signals, and the processor is electrically connected with the counter and the motor and used for receiving the generation number and controlling the motor to decelerate when the generation number reaches a preset number. Therefore, the shaking degree of the seat in the braking stage can be reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a seat adjustment device, a seat assembly and a vehicle. Background Art

[0002] The fore-and-aft movement adjustment of vehicle seats is usually achieved through a slide rail assembly under the seat. Drivers and passengers can adjust the fore-and-aft position of the seat according to their needs to obtain a more comfortable sitting posture.

[0003] In the related art, the slide rail assembly usually includes a lower slide rail connected to the vehicle body floor and an upper slide rail connected to the seat. The upper slide rail can move relative to the lower slide rail under the drive of a motor. Since the output voltage of the motor is constant, the movement speed of the upper slide rail and the seat also remains constant.

[0004] However, when the moving speed of the upper slide rail is kept constant, the seat is subjected to a large inertial force during the braking phase of the upper slide rail, resulting in a more obvious shaking phenomenon. Utility Model Content

[0005] The present application provides a seat adjustment device, a seat assembly and a vehicle to at least solve the technical problems in the related art. The technical solution of the present application is as follows:

[0006] According to a first aspect of the present application, a seat adjustment device is provided for adjusting the position of a seat in a vehicle, the seat adjustment device comprising a slide rail assembly and a motor, the slide rail assembly comprising a first slide rail and a second slide rail slidably connected to the first slide rail, the first slide rail being connected to the seat, the motor being arranged on the first slide rail, driving the first slide rail to slide on the second slide rail, the motor comprising a rotor, a Hall sensor, an acquisition circuit, a counter and a processor, a magnetic ring being sleeved on the rotor, the Hall sensor being able to respond to changes in the magnetic field of the magnetic ring to obtain magnetic field change information, the acquisition circuit being electrically connected to the Hall sensor, generating high-level signals and low-level signals according to the magnetic field change information, the counter being electrically connected to the acquisition circuit, for calculating the number of high-level signals and / or low-level signals generated, the processor being electrically connected to the counter and the motor, for receiving the number of generated signals, and controlling the motor to decelerate when the number of generated signals reaches a preset number.

[0007] According to the above technical means, since a Hall number includes a high-level signal and a low-level signal, the counter can determine the Hall number corresponding to the current position of the first slide rail after counting the high-level signal and the low-level signal. When the Hall number reaches the preset number, the first slide rail enters the braking stage, and the processor controls the motor to decelerate so that the sliding speed of the first slide rail slows down, thereby reducing the vibration of the seat connected to the first slide rail and improving the seat adjustment experience of the driver and passengers.

[0008] In some embodiments of the present application, the acquisition circuit includes a plurality of filter components arranged in parallel, and each filter component includes a resistor and a capacitor arranged in series. According to the above technical means, when the frequency of the input signal is high, the capacitive reactance of the capacitor is low relative to the impedance of the resistor, the voltage division amount of the capacitor is reduced, and the voltage applied to the load is small, which can play the role of low-pass filtering, thereby reducing the magnetic field interference in the motor or the electric field interference of other parts.

[0009] In some embodiments of the present application, the seat adjustment device also includes a transmission structure, which includes a lead screw and a gear assembly, the lead screw is arranged in the inner cavity of the second slide rail, the gear assembly is arranged on the first slide rail, and the gear assembly is respectively connected to the lead screw and the output end of the motor to change the torque direction of the motor.

[0010] According to the above technical means, the present application can convert the rotational motion of the motor into the linear motion of the first slide rail relative to the second slide rail.

[0011] In some embodiments of the present application, the gear assembly includes a first bevel gear and a second bevel gear, the inner hole surface of the first bevel gear is connected to the output end of the motor, the inner hole surface of the second bevel gear is threadedly connected to the lead screw, and the outer tooth surface of the second bevel gear is meshed with the outer tooth surface of the first bevel gear for transmission; wherein the rotation axis of the first bevel gear and the rotation axis of the second bevel gear are staggered.

[0012] According to the above technical means, the rotation of the motor output end can first drive the rotation of the first bevel gear, and the rotation of the first bevel gear can then drive the rotation of the second bevel gear. After the second bevel gear rotates, it can move along the extension direction of the lead screw, thereby driving the first slide rail connected to the gear assembly to move relative to the second slide rail.

[0013] In some embodiments of the present application, the slide rail assembly includes two groups, the two groups of slide rail assemblies are arranged relatively along a first direction, the first direction is parallel to the width direction of the seat, and the seat is respectively connected to each group of first slide rails in the two groups of slide rail assemblies.

[0014] According to the above technical means, the slide rail assembly can provide more force fulcrums for the seat, making the seat more stable during the sliding process.

[0015] In some embodiments of the present application, the transmission structure includes two groups, each group of transmission structures is arranged in a corresponding group of slide rail assemblies; the motor includes a first output end and a second output end, the first output end is connected to the first bevel gear in one group of transmission structures, and the second output end is connected to the first bevel gear in another group of transmission structures.

[0016] According to the above technical means, the motor can simultaneously drive the two first slide rails under the seat to move relative to the second slide rail, ensuring the synchronization of the moving speeds on both sides of the seat, thereby making the seat more stable during the sliding process.

[0017] In some embodiments of the present application, the transmission assembly also includes a first flexible shaft and a second flexible shaft, one end of the first flexible shaft is connected to the first output end, and the other end of the first flexible shaft is connected to the first bevel gear in a group of gear assemblies; one end of the second flexible shaft is connected to the second output end, and the other end of the second flexible shaft is connected to the first bevel gear in another group of gear assemblies.

[0018] According to the above technical means, the first flexible shaft and the second flexible shaft can reduce the vibration of the motor during operation, thereby effectively reducing the vibration during the transmission process and maintaining the smooth movement of the transmission structure and the seat.

[0019] In some embodiments of the present application, the seat adjustment device further includes a support frame, opposite ends of the support frame are respectively connected to each first slide rail in the two slide rail assemblies, and the motor is disposed on the support frame.

[0020] According to the above technical means, the support frame can not only provide installation space for the motor and the first flexible shaft and the second flexible shaft, facilitating the bidirectional transmission of the motor's torque, but also enable the movement of the first slide rail to remain synchronized, making the seat more stable during sliding.

[0021] According to a second aspect provided by the present application, a seat assembly is provided, comprising the above-mentioned seat adjustment device.

[0022] According to a third aspect provided by the present application, a vehicle is provided, comprising the above-mentioned seat assembly.

[0023] Therefore, the above technical features of the present application have the following beneficial effects:

[0024] (1) The present application can reduce the vibration of the seat during the adjustment process and improve the seat adjustment experience of the driver and passengers.

[0025] (2) The present application can perform signal processing through a filtering component, thereby reducing magnetic field interference within the motor or electric field interference from other parts.

[0026] (3) The rotational motion of the motor can be converted into the linear motion of the first slide rail relative to the second slide rail.

[0027] (4) The rotation of the motor output end can first drive the rotation of the first bevel gear, and the rotation of the first bevel gear can then drive the rotation of the second bevel gear. After the second bevel gear rotates, it can move along the extension direction of the lead screw, thereby driving the first slide rail connected to the gear assembly to move relative to the second slide rail.

[0028] (5) The slide rail assembly can provide more force fulcrums for the seat, making the seat more stable during the sliding process.

[0029] (6) The motor can simultaneously drive the two first slide rails under the seat to move relative to the second slide rail, ensuring the synchronization of the moving speeds of both sides of the seat, thereby making the seat more stable during the sliding process.

[0030] (7) The first flexible shaft and the second flexible shaft can reduce the vibration of the motor during operation, thereby effectively reducing the vibration during the transmission process and maintaining the smooth movement of the transmission structure and the seat.

[0031] (8) The support frame can provide installation space for the motor and the first flexible shaft and the second flexible shaft, thereby facilitating the bidirectional transmission of the motor torque, and can also promote the synchronization of the movement of the first slide rail, thereby making the seat more stable during the sliding process.

[0032] It should be noted that the technical effects brought about by any implementation method in the second aspect to the third aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0033] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0035] Figure 1 The overall structural diagram of a seat adjustment device provided by an embodiment of the present application is shown;

[0036] Figure 2 A schematic diagram of the top view of the seat adjustment device provided in one embodiment of the present application is shown;

[0037] Figure 3 A schematic structural diagram of a slide rail assembly provided in an embodiment of the present application is shown;

[0038] Figure 4 A schematic diagram of the structure of a collection circuit provided in an embodiment of the present application is shown;

[0039] Figure 5 Shows Figure 2 A schematic diagram of the cross-sectional structure at position AA;

[0040] Figure 6 Shows Figure 2 Schematic diagram of the cross-sectional structure at position BB.

[0041] Reference numerals:

[0042] Seat adjustment device 1;

[0043] Slide rail assembly 10; first slide rail 11; second slide rail 12;

[0044] Motor 20;

[0045] Transmission structure 30; lead screw 31; gear assembly 32; first flexible shaft 33; second flexible shaft 34;

[0046] Seat 2;

[0047] First area A1; second area A2; third area A3;

[0048] First direction F1. DETAILED DESCRIPTION

[0049] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0051] The fore-and-aft movement adjustment of vehicle seats is usually achieved through a slide rail assembly under the seat. Drivers and passengers can adjust the fore-and-aft position of the seat according to their needs to obtain a more comfortable sitting posture.

[0052] In the related art, the slide rail assembly usually includes a lower slide rail connected to the vehicle body floor and an upper slide rail connected to the seat. The upper slide rail can move relative to the lower slide rail under the drive of a motor. Since the output voltage of the motor is constant, the movement speed of the upper slide rail and the seat also remains constant.

[0053] However, when the moving speed of the upper slide rail is kept constant, the seat is subjected to a large inertial force during the braking phase of the upper slide rail, resulting in a more obvious shaking phenomenon.

[0054] Based on this, the present application provides a seat adjustment device, a seat assembly and a vehicle, which are used to improve the user experience during the seat adjustment process. For ease of understanding, the seat adjustment device provided by the present application is specifically introduced below in conjunction with the accompanying drawings of the specification.

[0055] Figure 1The overall structure diagram of the seat adjustment device provided by an embodiment of the present application is shown. Figure 1 According to the first aspect of the present application, a seat adjustment device 1 is provided for adjusting the position of a seat 2 in a vehicle. The seat adjustment device 1 may include a slide rail assembly 10 and a motor 20, wherein the slide rail assembly 10 is used to adjust the position of the seat 2 in the vehicle, and the motor 20 is used to provide power for the sliding process of the slide rail assembly 10.

[0056] Figure 2 FIG. 1 shows a schematic diagram of a top view of a seat adjustment device provided in an embodiment of the present application. Figure 3 The schematic diagram of the structure of the slide rail assembly provided by an embodiment of the present application is shown in FIG. Figure 2 and Figure 3 In some embodiments of the present application, the slide rail assembly 10 may include a first slide rail 11 and a second slide rail 12, the first slide rail 11 is connected to the seat 2, the second slide rail 12 is arranged on the floor of the vehicle and is slidably connected to the first slide rail 11, so that when the first slide rail 11 moves relative to the second slide rail 12, the seat 2 can be driven to move relative to the floor of the vehicle, thereby completing the adjustment of the position of the seat 2 in the vehicle to accommodate drivers and passengers of different heights.

[0057] Continue reading Figure 3 In some embodiments of the present application, the second slide rail 12 may include a first area A1, a second area A2 and a third area A3 connected in sequence along the extension direction of the second slide rail 12. The motor 20 is connected to the first slide rail 11 and can drive the first slide rail 11 to slide through the first area A1, the second area A2 and the third area A3 of the second slide rail 12 in sequence.

[0058] Figure 4 The structure diagram of the acquisition circuit provided by an embodiment of the present application is shown in FIG. Figure 3 and Figure 4 In some embodiments of the present application, the motor 20 may include a rotor, a Hall sensor, an acquisition circuit, a counter and a processor. A magnetic ring is sleeved on the rotor. The Hall sensor can respond to the magnetic field changes of the magnetic ring to obtain magnetic field change information. The acquisition circuit is electrically connected to the Hall sensor and generates high-level signals and low-level signals according to the magnetic field change information. The counter is electrically connected to the acquisition circuit and is used to calculate the number of high-level signals and / or low-level signals generated. The processor is electrically connected to the counter and the motor and is used to receive the generated number and control the motor to decelerate when the generated number reaches a preset number.

[0059] It can be understood that the motor 20 has a rotating magnetic ring, and the Hall element (HALL) in the acquisition circuit can sense the rotation of the rotating magnetic ring and generate a high-level signal (HA) and a low-level signal (HC). Since a Hall number includes a high-level signal and a low-level signal, the counter can determine the Hall number corresponding to the first slide rail 11 at the current moment after receiving and recording the number of high-level signals and low-level signals. Then, the processor can determine the Hall number corresponding to the first slide rail 11 at the current moment according to the relationship between the current Hall number and the preset number (which can also be the Hall number corresponding to the first slide rail 11 at the current moment). The ratio of the Hall number to the total Hall number after the first slide rail 11 passes through all the moving areas) is used to determine the position of the first slide rail 11. If the first slide rail 11 is in the first area A1, the processor can send a high duty cycle pulse width modulation (PWM) signal to control the speed of the motor 20 to gradually increase, thereby driving the first slide rail 11 to slide on the second slide rail 12 at an accelerated speed. If the first slide rail 11 is in the third area A3, the processor can send a low duty cycle pulse width modulation signal to control the speed of the motor 20 to gradually decrease, thereby driving the first slide rail 11 to slide on the second slide rail 12 at a decelerated speed.

[0060] That is to say, the present application determines the position of the first slide rail 11 on the second slide rail 12 by the ratio of the current Hall number of the first slide rail 11 to the total Hall number, and the motor 20 drives the first slide rail 11 to operate in different states according to the position of the first slide rail 11. The first slide rail 11 moves with uniform acceleration in the first area A1, which can make the seat 2 gradually accelerate in the starting stage, reduce the forward inertial force and the degree of forward shaking of the seat 2. Similarly, the first slide rail 11 moves with uniform deceleration in the third area A3, which can make the seat 2 gradually decelerate in the braking stage, reduce the backward inertial force and the degree of backward shaking of the seat 2. The movement of the seat 2 in the entire position adjustment process is relatively smooth, thereby improving the comfort of the driver and passengers in the process of adjusting the seat 2. At the same time, the first slide rail 11 maintains a relatively high speed uniform motion in the second area A2, which can speed up the running time of the first slide rail 11 in the second area A2 and balance the time required for the seat 2 in the entire adjustment process. Thereby, the vibration degree of the seat 2 in the starting and braking stages can be reduced, and the adjustment speed of the seat 2 can be increased, thereby effectively improving the actual use experience of the user.

[0061] Exemplarily, when the ratio is in the range of 0-5%, it can be determined that the first slide rail 11 is in the first area A1, when the ratio is in the range of 5%-95%, it can be determined that the first slide rail 11 is in the second area A2, and when the ratio is in the range of 95%-100%, it can be determined that the first slide rail 11 is in the third area A3.

[0062] It should be noted that the proportion of the first area A1, the second area A2 and the third area A3 in the entire motion area is related to the speed of the first slide rail 11 in the second area A2. If the speed is relatively high, the proportion of the first area A1 and the third area A3 in the entire motion area can be appropriately increased, and the proportion of the second area A2 in the entire motion area can be appropriately reduced, so that the acceleration of the first slide rail 11 in the first area A1 and the third area A3 is relatively small, thereby reducing the inertial force and the degree of shaking of the seat 2 during the starting and braking stages. On the contrary, if the speed of the first slide rail 11 in the second area A2 is relatively low, the proportion of the first area A1 and the third area A3 in the entire motion area can be appropriately reduced, and the proportion of the second area A2 in the entire motion area can be appropriately reduced, so as to ensure that the seat 2 runs smoothly during the starting and braking stages while reducing the time required for the adjustment process of the seat 2.

[0063] Continue reading Figure 4 In some embodiments of the present application, the acquisition circuit may include a plurality of filter components arranged in parallel, each filter component includes a resistor and a capacitor arranged in series. Exemplarily, the acquisition circuit may include three resistor-capacitor (RC) parallel circuits (i.e., filter components), the first RC circuit includes a first capacitor C57 and a first resistor R102, the second RC circuit includes a second capacitor C58 and a second resistor R108, and the third RC circuit includes a third capacitor C59 and a third resistor R110. The three RC circuits can filter the input signal of the Hall element after being connected in parallel. When the frequency of the input signal is low, the capacitive reactance of the capacitor is high relative to the impedance of the resistor, and the voltage division amount of the capacitor is high; when the frequency of the input signal is high, the capacitive reactance of the capacitor is low relative to the impedance of the resistor, the voltage division amount of the capacitor is reduced, and the voltage applied to the load is small, which can play a role of low-pass filtering, thereby reducing the magnetic field interference in the motor 20 or the electric field interference of other parts.

[0064] In some embodiments of the present application, the acquisition circuit may further include pull-up resistors R96, R97, and R100. The three pull-up resistors are respectively connected in parallel to three RC circuits to clamp the input signal of the Hall element to a high level, thereby stabilizing the potential of the Hall element at the output end, making it easier for the processor to accurately identify the signal of the Hall element.

[0065] Figure 5 Shows Figure 2 The cross-sectional structure diagram at position AA, combined with reference Figure 2 and Figure 5In some embodiments of the present application, the seat 2 adjustment device 1 also includes a transmission structure 30, the transmission structure 30 includes a lead screw 31 and a gear assembly 32, the lead screw 31 is arranged in the inner cavity of the second slide rail 12, the gear assembly 32 is arranged in the first slide rail 11, and the gear assembly 32 is respectively connected to the lead screw 31 and the output end of the motor 20, which can change the torque direction of the motor 20, thereby converting the rotational motion of the motor 20 into a linear motion of the first slide rail 11 relative to the second slide rail 12.

[0066] In some possible structural designs, the gear assembly 32 may include a first bevel gear and a second bevel gear, the inner hole surface of the first bevel gear is connected to the output end of the motor 20, the inner hole surface of the second bevel gear is threadedly connected to the lead screw 31, and the outer tooth surface of the second bevel gear is meshed with the outer tooth surface of the first bevel gear for transmission, wherein the rotation axis of the first bevel gear and the rotation axis of the second bevel gear are staggered.

[0067] In this way, the rotation of the output end of the motor 20 can first drive the rotation of the first bevel gear, and the rotation of the first bevel gear can then drive the rotation of the second bevel gear. After the second bevel gear rotates, it can move along the extension direction of the lead screw 31, thereby driving the first slide rail 11 connected to the gear assembly 32 to move relative to the second slide rail 12.

[0068] In some other possible structural designs, the transmission structure 30 may also use a worm gear structure, with the worm wheel connected to the output end of the motor 20 and the worm gear disposed in the inner cavity of the second slide rail 12. Thus, when the motor 20 rotates, since the position of the worm gear in the front-to-back direction is fixed, the rotational motion of the worm wheel can be converted into the movement of the worm wheel relative to the worm gear in the front-to-back direction, thereby driving the movement of the first slide rail 11 relative to the second slide rail 12.

[0069] It should be noted that a gear box is provided on the outer periphery of the second bevel gear or worm wheel, and the gear box can be firmly connected to the first slide rail 11, so that the first slide rail 11 can be indirectly connected to the second bevel gear or worm wheel. In this way, when the second bevel gear moves relative to the screw 31 or the worm wheel moves relative to the worm, the first slide rail 11 can be driven to move relative to the second slide rail 12.

[0070] Figure 6 Shows Figure 2 The cross-sectional structure diagram at position BB, combined with reference Figure 1 , Figure 2 and Figure 6In some embodiments of the present application, the slide rail assembly 10 may include two groups, the two groups of slide rail assemblies 10 are arranged opposite to each other along the first direction F1, the first direction F1 is parallel to the width direction of the seat 2, and the seat 2 is respectively connected to each group of first slide rails 11 in the two groups of slide rail assemblies 10. In this way, the slide rail assembly 10 can provide more force fulcrums for the seat 2, so that the seat 2 is more stable during the sliding process.

[0071] In some embodiments of the present application, the transmission structure 30 may include two groups, each group of transmission structures 30 is arranged in a corresponding group of slide rail assemblies 10, the motor 20 includes a first output end and a second output end, the first output end is connected to the first bevel gear in one group of transmission structures 30, and the second output end is connected to the first bevel gear in another group of transmission structures 30.

[0072] In this way, the motor 20 can simultaneously drive the two first slide rails 11 under the seat 2 to move relative to the second slide rail 12, ensuring the synchronization of the moving speeds of both sides of the seat 2, thereby making the seat 2 more stable during the sliding process.

[0073] Continue reading Figure 6 In some embodiments of the present application, the transmission structure 30 may also include a first flexible shaft 33 and a second flexible shaft 34, one end of the first flexible shaft 33 is connected to the first output end, the other end of the first flexible shaft 33 is connected to the first bevel gear in a group of gear assemblies 32, one end of the second flexible shaft 34 is connected to the second output end, and the other end of the second flexible shaft 34 is connected to the first bevel gear in another group of gear assemblies 32.

[0074] It can be understood that the first flexible shaft 33 and the second flexible shaft 34 can reduce the vibration of the motor 20 during operation, thereby effectively reducing the vibration during the transmission process and maintaining the smooth movement of the transmission structure 30 and the seat 2.

[0075] Continue reading Figure 2 In some embodiments of the present application, the seat 2 adjustment device 1 also includes a support frame, the opposite ends of the support frame are respectively connected to each group of first slide rails 11 in the two groups of slide rail assemblies 10, and the motor 20 is arranged on the support frame.

[0076] In this way, the support frame can provide installation space for the motor 20 and the first flexible shaft 33 and the second flexible shaft 34, facilitating the bidirectional transmission of the torque of the motor 20, and can also promote the synchronization of the movement of the first slide rail 11, so that the seat 2 is more stable during the sliding process.

[0077] According to a second aspect of the present application, a seat assembly is also provided, the seat assembly comprising the above-mentioned seat adjustment device.

[0078] According to a third aspect of the present application, a vehicle is also provided, the vehicle comprising the above-mentioned seat assembly.

[0079] The technical effects brought about by any implementation method in the second aspect to the third aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0080] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the present application for which protection is claimed, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0081] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0082] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A seat adjustment device for adjusting the position of a seat in a vehicle, characterized in that: The seat adjustment device comprises: A slide rail assembly, comprising a first slide rail and a second slide rail slidably connected to the first slide rail, wherein the first slide rail is connected to the seat; and a motor, which is disposed on the first slide rail and drives the first slide rail to slide on the second slide rail, and comprises: A rotor, wherein a magnetic ring is sleeved on the rotor; A Hall sensor, responding to the magnetic field change of the magnetic ring to obtain magnetic field change information; An acquisition circuit, electrically connected to the Hall sensor, and generating a high level signal and a low level signal according to the magnetic field change information; a counter, electrically connected to the acquisition circuit, and used to count the number of generated high-level signals and / or low-level signals; and a processor electrically connected to the counter and the motor, configured to receive the generated quantity and control the motor to decelerate when the generated quantity reaches a preset quantity.

2. A seat adjustment device according to claim 1, characterized in that: The acquisition circuit includes: a plurality of filter components arranged in parallel, each of which includes a resistor and a capacitor arranged in series.

3. A seat adjustment device according to claim 1, characterized in that: The seat adjustment device further comprises: a transmission structure, wherein the transmission structure comprises: A lead screw, the lead screw being arranged in the inner cavity of the second slide rail; and a gear assembly, wherein the gear assembly is arranged on the first slide rail and the gear assembly is respectively connected to the lead screw and the output end of the motor to change the torque direction of the motor.

4. A seat adjustment device according to claim 3, characterized in that: The gear assembly comprises: A first bevel gear, wherein the inner hole surface of the first bevel gear is connected to the output end of the motor; and a second bevel gear, wherein the inner hole surface of the second bevel gear is threadedly connected to the lead screw, and the outer tooth surface of the second bevel gear is meshed with the outer tooth surface of the first bevel gear for transmission; Wherein, the rotation axis of the first bevel gear and the rotation axis of the second bevel gear are arranged alternately.

5. A seat adjustment device according to claim 4, characterized in that: The slide rail assembly includes two groups, and the two groups of slide rail assemblies are arranged opposite to each other along a first direction, and the first direction is parallel to the width direction of the seat; The seat is respectively connected to each of the first slide rails in the two groups of slide rail assemblies.

6. A seat adjustment device according to claim 5, characterized in that: The transmission structure comprises two groups, each of which is arranged on a corresponding group of the slide rail assemblies; The motor comprises a first output end and a second output end, the first output end is connected to the first bevel gear in one group of the transmission structures, and the second output end is connected to the first bevel gear in another group of the transmission structures.

7. A seat adjustment device according to claim 6, characterized in that: The transmission structure also includes: A first flexible shaft, one end of which is connected to the first output end, and the other end of which is connected to the first bevel gear in the group of gear assemblies; And a second flexible shaft, one end of the first flexible shaft is connected to the second output end, and the other end of the second flexible shaft is connected to the first bevel gear in the other group of gear assemblies.

8. A seat adjustment device according to claim 7, characterized in that: The seat adjustment device further comprises: a support frame, the opposite ends of which are respectively connected to each of the first slide rails in the two groups of slide rail assemblies; and the motor is arranged on the support frame.

9. A seat assembly, characterized in that: The seat assembly comprises the seat adjustment device according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle includes the seat assembly of claim 9.

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