Seat damping system

Abstract

The utility model relates to the technical field of seat vibration reduction, in particular to a seat vibration reduction system. The seat vibration reduction system comprises a seat body, and a vibration reduction mechanism and a vibration reduction regulation and control assembly which are arranged at the bottom of the seat body; the damping mechanism comprises an upper mounting part, a lower mounting part and a linear magnetorheological damper; the upper mounting part is arranged at the bottom of the seat body, and the lower mounting part is correspondingly arranged below the upper mounting part and is in contact with the vibration source; one end of the linear magneto-rheological damper is connected with the upper mounting part, and the other end of the linear magneto-rheological damper is connected with the lower mounting part; or the vibration reduction mechanism comprises an upper mounting part, a lower mounting part, a fork arm supporting piece and a magneto-rheological rotary damper; the rotating end of the magneto-rheological rotating damper is connected with a supporting rod in the fork arm supporting piece, and the fixed end of the magneto-rheological rotating damper is connected with the upper installation component and the lower installation component. The vibration reduction regulation and control assembly can be combined with the vibration reduction mechanism to achieve the level that vibration reduction damping force changes continuously and is controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of seat vibration reduction, in particular to a seat vibration reduction system. Background Art

[0002] When a vehicle encounters speed bumps and potholes during travel, the seat will be impacted, which in turn causes a sense of shock and discomfort to the passengers. Therefore, in order to provide passengers with a comfortable riding experience, it is necessary to consider seat vibration reduction. However, most of the existing seat vibration reduction products can only provide the maximum vibration reduction damping force and the minimum vibration reduction damping force, and it is difficult to achieve a level of continuous and controllable vibration reduction damping force. Therefore, this type of seat vibration reduction product cannot provide passengers with a comfortable riding experience.

[0003] In addition, some seat vibration reduction products have complex structures and are difficult and time-consuming to install.

[0004] In summary, it is necessary to provide a seat vibration reduction system to solve the problems of uncontrollable continuous change of vibration reduction damping force and complex structure in the prior art. Utility Model Content

[0005] The utility model aims to provide a seat vibration reduction system, and the specific technical solution is as follows:

[0006] In a first aspect, the utility model provides a seat vibration reduction system, including a seat body and a vibration reduction mechanism and a vibration reduction control assembly arranged at the bottom of the seat body;

[0007] The vibration reduction mechanism includes an upper mounting component, a lower mounting component and a linear magnetorheological damper; the upper mounting component is arranged at the bottom of the seat body, and the lower mounting component is correspondingly arranged below the upper mounting component and contacts the vibration source; one end of the linear magnetorheological damper is connected to the upper mounting component, and the other end is connected to the lower mounting component;

[0008] The vibration reduction control component includes a controller and an acceleration sensor, wherein the controller is arranged on the upper mounting component or the lower mounting component and is electrically connected to the linear magnetorheological damper; the acceleration sensor is arranged on the lower mounting component and is connected to the controller through a data transmission line;

[0009] Alternatively, the vibration damping and control component includes a controller and two acceleration sensors, wherein the controller is arranged on the upper mounting component or the lower mounting component and is electrically connected to the linear magnetorheological damper; wherein one acceleration sensor is arranged on the upper mounting component, and the other acceleration sensor is arranged on the lower mounting component, and both acceleration sensors are connected to the controller via a data transmission line.

[0010] In a second aspect, the utility model provides a seat vibration reduction system, including a seat body and a vibration reduction mechanism and a vibration reduction control assembly arranged at the bottom of the seat body;

[0011] The vibration reduction mechanism includes an upper mounting component, a lower mounting component and a linear magnetorheological damper; the upper mounting component is arranged at the bottom of the seat body, and the lower mounting component is correspondingly arranged below the upper mounting component and contacts the vibration source; one end of the linear magnetorheological damper is connected to the upper mounting component, and the other end is connected to the lower mounting component;

[0012] The vibration reduction control component includes a controller, an acceleration sensor and a displacement sensor. The controller is arranged on the upper mounting component or the lower mounting component and is electrically connected to the linear magnetorheological damper; the acceleration sensor is arranged on the lower mounting component and is connected to the controller through a data transmission line; one end of the displacement sensor is connected to the upper mounting component, and the other end is connected to the lower mounting component, and is connected to the controller through a data transmission line;

[0013] Alternatively, the vibration damping and control component includes a controller and a displacement sensor, the controller is arranged on the upper mounting component or the lower mounting component, and is electrically connected to the linear magnetorheological damper; one end of the displacement sensor is connected to the upper mounting component, and the other end is connected to the lower mounting component, and is connected to the controller via a data transmission line.

[0014] The technical solutions in the first and second aspects also include the following optimization solutions:

[0015] Optionally, the linear magnetorheological damper includes a cylinder, an airbag, a guide, a battery cell assembly, a connecting rod, an upper connecting piece and a lower connecting piece; the airbag and the guide are respectively arranged at the two ends of the cylinder and are sealed with the cylinder; the cylinder is filled with magnetorheological fluid; the battery cell assembly is slidably arranged in the cylinder; one end of the connecting rod is arranged on the battery cell assembly, and the other end passes through the guide and is connected to the upper mounting component through the upper connecting piece; the lower connecting piece is arranged on one end of the cylinder connected to the airbag, and is connected to the lower mounting component.

[0016] Optionally, the battery core assembly includes a battery core, an end cover and an excitation coil; the battery core can be slidably disposed in the cylinder, and a gap for the circulation of magnetorheological fluid is arranged between the battery core and the cylinder; one end of the battery core is connected to the end cover, and the other end is connected to the connecting rod; an annular groove for mounting the excitation coil is arranged on the periphery of the battery core; the excitation coil is connected to a wire; the wire passes through the connecting rod and is connected to the controller; a power source connected to the wire is arranged in the controller.

[0017] Optionally, the vibration reduction mechanism further includes an elastic support member, one end of the elastic support member is connected to the upper mounting component, and the other end of the elastic support member is connected to the lower mounting component.

[0018] Optionally, the vibration damping mechanism also includes a fork arm support member, which is movably arranged between the upper mounting component and the lower mounting component; the fork arm support member includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are cross-arranged, and a rotatable support rod is arranged at the intersection of the two; the upper end of the first fork arm is hinged to the upper mounting component, and the lower end is hinged to the lower mounting component; the upper end of the second fork arm is slidably connected to the upper mounting component.

[0019] In a third aspect, the utility model provides a seat vibration reduction system, including a seat body and a vibration reduction mechanism and a vibration reduction control assembly arranged at the bottom of the seat body;

[0020] The vibration reduction mechanism includes an upper mounting component, a lower mounting component, a fork arm support and a magnetorheological rotation damper; the upper mounting component is arranged at the bottom of the seat body, and the lower mounting component is correspondingly arranged below the upper mounting component and in contact with the vibration source; the fork arm support is movably arranged between the upper mounting component and the lower mounting component, and the fork arm support includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are cross-arranged, and a rotatable support rod is arranged at the intersection of the two; the upper end of the first fork arm is hinged to the upper mounting component, and the lower end is hinged to the lower mounting component; the upper end of the second fork arm is slidably connected to the upper mounting component, and the lower end is hinged to the lower mounting component; the rotating end of the magnetorheological rotation damper is connected to the support rod, and the fixed end is respectively connected to the upper mounting component and the lower mounting component;

[0021] The vibration reduction control component includes a controller and an acceleration sensor, wherein the controller is arranged on the upper mounting component or the lower mounting component and is electrically connected to the magnetorheological rotation damper; the acceleration sensor is arranged on the lower mounting component and is connected to the controller through a data transmission line;

[0022] Alternatively, the vibration damping and control component includes a controller and two acceleration sensors, wherein the controller is arranged on the upper mounting component or the lower mounting component and is electrically connected to the magnetorheological rotational damper; wherein one acceleration sensor is arranged on the upper mounting component, and the other acceleration sensor is arranged on the lower mounting component, and both acceleration sensors are connected to the controller via a data transmission line.

[0023] In a fourth aspect, the utility model provides a seat vibration reduction system, including a seat body and a vibration reduction mechanism and a vibration reduction control assembly arranged at the bottom of the seat body;

[0024] The vibration reduction mechanism includes an upper mounting component, a lower mounting component, a fork arm support and a magnetorheological rotation damper; the upper mounting component is arranged at the bottom of the seat body, and the lower mounting component is correspondingly arranged below the upper mounting component and in contact with the vibration source; the fork arm support is movably arranged between the upper mounting component and the lower mounting component, and the fork arm support includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are cross-arranged, and a rotatable support rod is arranged at the intersection of the two; the upper end of the first fork arm is hinged to the upper mounting component, and the lower end is hinged to the lower mounting component; the upper end of the second fork arm is slidably connected to the upper mounting component, and the lower end is hinged to the lower mounting component; the rotating end of the magnetorheological rotation damper is connected to the support rod, and the fixed end is respectively connected to the upper mounting component and the lower mounting component;

[0025] The vibration reduction control component includes a controller, an acceleration sensor and a displacement sensor. The controller is arranged on the upper mounting component or the lower mounting component and is electrically connected to the magnetorheological rotation damper; the acceleration sensor is arranged on the lower mounting component and is connected to the controller through a data transmission line; one end of the displacement sensor is connected to the upper mounting component, and the other end is connected to the lower mounting component, and is connected to the controller through a data transmission line;

[0026] Alternatively, the vibration damping and control component includes a controller and a displacement sensor, the controller is arranged on the upper mounting component or the lower mounting component, and is electrically connected to the magnetorheological rotational damper; one end of the displacement sensor is connected to the upper mounting component, and the other end is connected to the lower mounting component, and is connected to the controller via a data transmission line.

[0027] The technical solutions in the third and fourth aspects also include the following optimization solutions:

[0028] Optionally, the magnetorheological rotary damper includes an upper pole plate, a lower pole plate, an excitation coil, a rotating pole plate, a rotating shaft, a first bearing, a second bearing, a first oil seal and a second oil seal; the upper pole plate is fixedly arranged on the lower pole plate, and a closed cavity filled with magnetorheological fluid is formed between the two; an excitation coil is arranged on the annular inner wall of the closed cavity; the excitation coil is connected to a wire; the wire passes through the upper pole plate or the lower pole plate and is connected to the controller; a power supply connected to the wire is arranged in the controller; the rotating pole plate is arranged in the cavity; a mounting through hole connected to the rotating shaft is arranged on the rotating pole plate; the rotating shaft passes through the mounting through hole, one end of which is connected to the lower pole plate through a first bearing, and the other end is a rotating end, and passes through the upper pole plate to be connected to a support rod, and the position where the rotating end passes through the upper pole plate is connected by a second bearing; a first oil seal is arranged at the connection between the rotating shaft and the upper pole plate; a second oil seal is arranged at the connection between the rotating shaft and the lower pole plate.

[0029] Optionally, the vibration reduction mechanism further includes an elastic support member, one end of the elastic support member is connected to the upper mounting component, and the other end of the elastic support member is connected to the lower mounting component.

[0030] The application of the technical solution of the utility model has at least the following beneficial effects:

[0031] (1) The seat vibration reduction system provided by the utility model includes a vibration reduction mechanism and a vibration reduction control assembly arranged at the bottom of the seat body, and has the characteristics of simple structure. In addition, by arranging an upper mounting component and a lower mounting component in the vibration reduction mechanism, the vibration reduction mechanism and the seat body can be quickly installed.

[0032] (2) When the vibration reduction mechanism provided by the present invention adopts a linear magnetorheological damper to provide damping force or a magnetorheological rotary damper to provide damping force, the vibration reduction control component includes a controller and an acceleration sensor, which can achieve a continuous and controllable level of vibration reduction damping force. The specific operating principle is as follows: when the vibration source drives the seat body to vibrate, the acceleration sensor detects the acceleration signal of the vibration source, and the data processing module in the controller integrates the collected acceleration signal over time to obtain the speed; when the speed is positive and increases, it means that the seat body is in a compressed state and will continue to compress. The controller reduces the current delivered to the excitation coil to reduce the damping force and reduce the force transmission above the seat body; when the speed is positive and decreases, it means that the seat body is in a compressed state and will slow down the compression. The controller should gradually increase the current delivered to the excitation coil to gradually increase the damping force to avoid the seat body from suddenly stretching and producing greater vibration; when the speed is negative and increases, it means that the seat body is in a stretched state and will slow down the stretching. The controller should gradually increase the current delivered to the excitation coil to increase the damping force to avoid a sudden change in the vibration direction and a hard collision of the seat body; when the speed is negative and decreases, it means that the seat body is in a stretched state and will continue to stretch. The controller should reduce the current delivered to the excitation coil to reduce the damping force so that the seat body can move downward more smoothly and avoid greater vibration.

[0033] (3) When the vibration reduction mechanism provided by the utility model adopts a linear magnetorheological damper to provide damping force or a magnetorheological rotary damper to provide damping force, the vibration reduction control component includes a controller and two acceleration sensors, which can achieve a controllable level of continuous change in the magnitude of the vibration reduction damping force. The specific operating principle is as follows: when the vibration source drives the seat body to vibrate, the acceleration sensor arranged on the lower mounting component detects the acceleration signal of the vibration source, and the data processing module in the controller integrates the collected acceleration signal over time to obtain the unsprung speed V1; the acceleration sensor arranged on the upper mounting component detects the acceleration signal of the vibration source, and the data processing module in the controller integrates the collected acceleration signal over time to obtain the sprung speed V2; through the ceiling control algorithm, the speed relationship between V1 and V2 is judged, the current size is controlled, and thus the damping force size is controlled.

[0034] (4) When the vibration reduction mechanism provided by the utility model adopts a linear magnetorheological damper to provide damping force or a magnetorheological rotary damper to provide damping force, the vibration reduction control component includes a controller, an acceleration sensor and a displacement sensor, which can achieve a controllable level of continuous change in the magnitude of the vibration reduction damping force. The specific operating principle is as follows: When the vibration source drives the seat body to vibrate, the acceleration sensor detects the acceleration signal of the vibration source, and the data processing module in the controller integrates the collected acceleration signal over time to obtain the unsprung velocity V1; the relative displacement signal detected by the displacement sensor is obtained by the data processing module in the controller by differentiating the collected relative displacement over time to obtain the relative velocity (V2-V1) of the vibration reduction mechanism. Through the ceiling control algorithm, the speed relationship between V1 and V2 is judged, the current size is controlled, and thus the damping force size is controlled.

[0035] (5) When the vibration reduction mechanism provided by the utility model adopts a linear magnetorheological damper to provide damping force or a magnetorheological rotary damper to provide damping force, the vibration reduction control component includes a controller and a displacement sensor, which can achieve a controllable level of continuous change in the magnitude of the vibration reduction damping force. The specific operating principle is as follows: When the vibration source drives the seat body to vibrate, the relative displacement signal detected by the displacement sensor is obtained by the data processing module in the controller by differentiating the collected relative displacement with respect to time to obtain the relative speed of the seat body. When the relative speed is positive and increases, it means that the seat body is in a compressed state and will continue to compress. The controller reduces the current input to the excitation coil to reduce the damping force and reduce the force transmission above the seat body; when the relative speed is positive and decreases, it means that the seat body is in a compressed state and will slow down the compression. The controller should gradually increase the current input to the excitation coil to gradually increase the damping force to avoid sudden stretching of the seat body and generating greater vibration; when the relative speed is negative and increases, it means that the seat body is in a stretched state and will slow down the stretching. The controller should gradually increase the current input to the excitation coil to increase the damping force to avoid sudden changes in the vibration direction and hard collisions of the seat body; when the relative speed is negative and decreases, it means that the seat body is in a stretched state and will continue to stretch. The controller should reduce the current input to the excitation coil to reduce the damping force so that the seat body can move downward more smoothly and avoid greater vibrations.

[0036] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0038] Figure 1 It is a schematic diagram of the overall structure of a seat vibration reduction system in Embodiment 1 of the present utility model;

[0039] Figure 2 is a structural schematic diagram of the combination of the vibration reduction mechanism and the vibration reduction control component in Example 1;

[0040] Figure 3 is a schematic structural diagram of a linear magnetorheological damper in Example 1;

[0041] Figure 4 yes Figure 3 A schematic diagram of the structure of the battery cell assembly and the connecting rod combination;

[0042] Figure 5 is a structural schematic diagram of the combination of the vibration reduction mechanism and the vibration reduction control component in Example 2;

[0043] Figure 6 is a structural schematic diagram of the combination of the vibration reduction mechanism and the vibration reduction control component in Example 3;

[0044] Figure 7 is a structural schematic diagram of the combination of the vibration reduction mechanism and the vibration reduction control component in Example 4;

[0045] Figure 8 is a structural schematic diagram of the combination of the vibration reduction mechanism and the vibration reduction control component in Example 5;

[0046] Fig. 9 is a schematic structural diagram of the magnetorheological rotation damper in Example 5;

[0047] Among them, 1. seat body, 2. vibration reduction mechanism, 2.1. upper mounting part, 2.2. lower mounting part, 2.3. linear magnetorheological damper, 2.3.1. cylinder, 2.3.2. airbag, 2.3.3. guide, 2.3.4. battery cell assembly, 2.3.4.1. battery cell, 2.3.4.2. end cover, 2.3.5. connecting rod, 2.3.6. upper connecting part, 2.3.7. lower connecting part, 2.4. elastic support part, 2.5. Fork arm support, 2.5.1, support rod, 2.6, magnetorheological rotation damper, 2.6.1, upper pole plate, 2.6.2, lower pole plate, 2.6.3, rotating pole plate, 2.6.4, rotating shaft, 2.6.5, first bearing, 2.6.6, second bearing, 2.6.7, first oil seal, 2.6.8, second oil seal, 3, vibration reduction and control component, 3.1, controller, 3.2, acceleration sensor, 3.3, displacement sensor, W, vibration source. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0049] Embodiment 1:

[0050] See also Figure 1 and Figure 2 , a seat vibration reduction system, comprising a seat body 1 and a vibration reduction mechanism 2 and a vibration reduction regulating component 3 arranged at the bottom of the seat body 1;

[0051] The vibration reduction mechanism 2 includes an upper mounting component 2.1, a lower mounting component 2.2 and a linear magnetorheological damper 2.3; the upper mounting component 2.1 is arranged at the bottom of the seat body 1, and the lower mounting component 2.2 is correspondingly arranged below the upper mounting component 2.1 and in contact with the vibration source W; one end of the linear magnetorheological damper 2.3 is connected to the upper mounting component 2.1, and the other end is connected to the lower mounting component 2.2;

[0052] The vibration reduction and regulation component 3 includes a controller 3.1 and an acceleration sensor 3.2. The controller 3.1 is arranged on the lower mounting component 2.2 and is electrically connected to the linear magnetorheological damper 2.3; the acceleration sensor 3.2 is arranged on the lower mounting component 2.2 and is connected to the controller 3.1 through a data transmission line.

[0053] See also Figure 3 The linear magnetorheological damper 2.3 includes a cylinder 2.3.1, an airbag 2.3.2 (the airbag 2.3.2 is filled with nitrogen), a guide 2.3.3, a battery core assembly 2.3.4, a connecting rod 2.3.5, an upper connecting piece 2.3.6 and a lower connecting piece 2.3.7; the airbag 2.3.2 and the guide 2.3.3 are respectively arranged at the two ends of the cylinder 2.3.1 and are sealed and connected to the cylinder 2.3.1; the cylinder 2.3.1 is filled with nitrogen. Magnetorheological fluid; the battery cell assembly 2.3.4 can be slidably arranged in the cylinder 2.3.1; one end of the connecting rod 2.3.5 is arranged on the battery cell assembly 2.3.4, and the other end passes through the guide 2.3.3, and is connected to the upper mounting component 2.1 through the upper connecting member 2.3.6; the lower connecting member 2.3.7 is arranged on one end of the cylinder 2.3.1 connected to the airbag 2.3.2, and is connected to the lower mounting component 2.2.

[0054] See also Figure 4The battery cell assembly 2.3.4 includes a battery cell 2.3.4.1, an end cover 2.3.4.2 and an excitation coil; the battery cell 2.3.4.1 can be slidably arranged in the cylinder 2.3.1, and a gap for the circulation of magnetorheological fluid is arranged between the battery cell 2.3.1 and the cylinder 2.3.1; one end of the battery cell 2.3.4.1 is connected to the end cover 2.3.4.2, and the other end is connected to the connecting rod 2.3.5; an annular groove for mounting the excitation coil is arranged on the periphery of the battery cell 2.3.4.1; the excitation coil is connected to a wire; the wire passes through the connecting rod 2.3.5 and is connected to the controller 3.1; a power source connected to the wire is arranged in the controller 3.1.

[0055] The operating principle of the linear magnetorheological damper 2.3 during compression is as follows:

[0056] When the controller 3.1 inputs current to the excitation coil through the wire, the magnetic field is excited, and the connecting rod 2.3.5 drives the battery cell assembly 2.3.4 to move in the cylinder 2.3.1 toward the airbag 2.3.2, so that the magnetorheological fluid flows from the rodless cavity (the cavity surrounded by the airbag 2.3.2, the battery cell assembly 2.3.4 and the cylinder 2.3.1) to the rod cavity (the cavity surrounded by the guide 2.3.3, the battery cell assembly 2.3.4, the connecting rod 2.3.5 and the cylinder 2.3.1). Under the effect of the magnetic field, the magnetorheological fluid undergoes a rheological reaction, thereby changing the damping force during the circulation process. At the same time, the airbag 2.3.2 is compressed to provide the possibility for the connecting rod 2.3.5 and the battery cell assembly 2.3.4 to move; according to the control of the current input to the excitation coil by the controller 3.1, the damping force is controlled.

[0057] The operating principle of the linear magnetorheological damper 2.3 during recovery is as follows:

[0058] When the controller 3.1 inputs current to the excitation coil through the wire, the magnetic field is excited, and the connecting rod 2.3.5 drives the battery cell assembly 2.3.4 to move in the direction of the guide 2.3.3 in the cylinder 2.3.1, so that the magnetorheological fluid flows from the rod cavity to the rodless cavity. Under the effect of the magnetic field, the magnetorheological fluid undergoes a rheological reaction, thereby changing the damping force during the circulation process. At the same time, the expansion of the airbag 2.3.2 provides the possibility for the movement of the connecting rod 2.3.5 and the battery cell assembly 2.3.4. The damping force is controlled by the controller 3.1 on the current input to the excitation coil.

[0059] The vibration reduction mechanism 2 further comprises an elastic support member 2.4 (specifically an air bag 2.3.2 or a mold spring), one end of the elastic support member 2.4 is connected to the upper mounting component 2.1, and the other end is connected to the lower mounting component 2.2.

[0060] The vibration damping mechanism 2 also includes a fork arm support member 2.5, which is movably arranged between the upper mounting component 2.1 and the lower mounting component 2.2; the fork arm support member 2.5 includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are cross-arranged, and a rotatable support rod 2.5.1 is arranged at the intersection of the two; the upper end of the first fork arm is hinged to the upper mounting component 2.1, and the lower end is hinged to the lower mounting component 2.2; the upper end of the second fork arm is slidably connected to the upper mounting component 2.1 (specifically, a slide groove mechanism is arranged on the upper mounting component 2.1, and the upper end of the second fork arm is slidably connected to the slide groove mechanism).

[0061] The operating principle of the seat vibration reduction system in this embodiment 1 is as follows:

[0062] When the vibration source W drives the seat body to vibrate, the acceleration signal of the vibration source W is detected by the acceleration sensor 3.2, and the data processing module in the controller 3.1 integrates the collected acceleration signal over time to obtain the speed; when the speed is positive and increases, it means that the seat body is in a compressed state and will continue to be compressed. The controller 3.1 reduces the current transmitted to the excitation coil to reduce the damping force and reduce the force transmission above the seat body; when the speed is positive and decreases, it means that the seat body is in a compressed state and will slow down the compression. The controller 3.1 should gradually increase the current transmitted to the excitation coil. The current increases the damping force gradually to avoid the seat body from being stretched suddenly and causing greater vibrations. When the speed is negative and increases, it means that the seat body is in a stretched state and will slow down the stretching. The controller 3.1 should gradually increase the current delivered to the excitation coil to increase the damping force to avoid a sudden change in the vibration direction and a hard collision of the seat body. When the speed is negative and decreases, it means that the seat body is in a stretched state and will continue to stretch. The controller 3.1 should reduce the current delivered to the excitation coil to reduce the damping force, so that the seat body can move downward more smoothly and avoid greater vibrations.

[0063] Embodiment 2:

[0064] Different from Example 1, see Figure 5 The vibration reduction and control component 3 includes a controller 3.1 and two acceleration sensors 3.2. The controller 3.1 is arranged on the lower mounting component 2.2 and is electrically connected to the linear magnetorheological damper 2.3; wherein one acceleration sensor 3.2 is arranged on the upper mounting component 2.1, and the other acceleration sensor 3.2 is arranged on the lower mounting component 2.2, and both acceleration sensors 3.2 are connected to the controller 3.1 through a data transmission line.

[0065] The operating principle of the seat vibration reduction system in this embodiment 2 is as follows:

[0066] When the vibration source W drives the seat body to vibrate, the acceleration sensor 3.2 disposed on the lower mounting component 2.2 detects the acceleration signal of the vibration source W, and the data processing module in the controller 3.1 integrates the collected acceleration signal over time to obtain the sprung velocity V2; the acceleration sensor 3.2 disposed on the upper mounting component 2.1 detects the acceleration signal of the vibration source W, and the data processing module in the controller 3.1 integrates the collected acceleration signal over time to obtain the sprung velocity V1; the ceiling control algorithm is used to determine the velocity relationship between V1 and V2, control the current, and thus control the damping force. Specifically, the ceiling control algorithm is as follows:

[0067]

[0068] Here, I represents current, I=1, indicating that current is supplied to the excitation coil; I=0, indicating that current is not supplied to the excitation coil.

[0069] When the speed directions of V2 and V2-V1 are the same, the controller 3.1 increases the current delivered to the excitation coil to increase the damping force; when the speed directions of V2 and V2-V1 are the same, and the larger the absolute value of V2-V1 is, the current delivered to the excitation coil by the controller 3.1 is continuously increased to increase the damping force; when the speed directions of V2 and V2-V1 are the same, and the smaller the absolute value of V2-V1 is, the current delivered to the excitation coil by the controller 3.1 is continuously reduced to reduce the damping force, thereby achieving continuous and controllable variation of the vibration damping force; when the speed directions of V2 and V2-V1 are opposite, the current delivered to the excitation coil by the controller is zero, so that the damping force is zero.

[0070] Embodiment 3:

[0071] Different from Example 1, see Figure 6 The vibration reduction and control component 3 includes a controller 3.1, an acceleration sensor 3.2 and a displacement sensor 3.3. The controller 3.1 is arranged on the upper mounting component 2.1 or the lower mounting component 2.2, and is electrically connected to the linear magnetorheological damper 2.3; the acceleration sensor 3.2 is arranged on the lower mounting component 2.2, and is connected to the controller 3.1 through a data transmission line; one end of the displacement sensor 3.3 is connected to the upper mounting component 2.1, and the other end is connected to the lower mounting component 2.2, and is connected to the controller 3.1 through a data transmission line.

[0072] The operating principle of the seat vibration reduction system in this embodiment 3 is as follows:

[0073] When the vibration source W drives the seat body to vibrate, the acceleration signal of the vibration source W is detected by the acceleration sensor 3.2, and the data processing module in the controller 3.1 integrates the collected acceleration signal in time to obtain the sprung speed V2; the displacement sensor 3.3 detects the relative displacement signal of the linear magnetorheological damper 2.3, and the data processing module in the controller 3.1 differentiates the collected relative displacement in time to obtain the relative speed (V2-V1) of the damping mechanism 2. The ceiling control algorithm is used to determine the speed relationship between V1 and V2, control the current size, and thus control the damping force size. For the specific control process, see Example 2.

[0074] Embodiment 4:

[0075] Different from Example 1, see Figure 7 The vibration reduction and control component 3 includes a controller 3.1 and a displacement sensor 3.3. The controller 3.1 is arranged on the upper mounting component 2.1 or the lower mounting component 2.2 and is electrically connected to the linear magnetorheological damper 2.3; one end of the displacement sensor 3.3 is connected to the upper mounting component 2.1, and the other end is connected to the lower mounting component 2.2, and is connected to the controller 3.1 through a data transmission line.

[0076] The operating principle of the seat vibration reduction system in this embodiment 4 is as follows:

[0077] When the vibration source W drives the seat body to vibrate, the displacement sensor 3.3 detects the displacement signal of the linear magnetorheological damper 2.3, and the data processing module in the controller 3.1 differentiates the collected relative displacement with respect to time to obtain the relative speed of the seat body. When the relative speed is positive and increases, it means that the seat body is in a compressed state and will continue to compress. The controller 3.1 reduces the current input to the excitation coil to reduce the damping force and reduce the force transmission above the seat body; when the relative speed is positive and decreases, it means that the seat body is in a compressed state and will slow down the compression. The controller 3.1 should gradually increase the current input to the excitation coil to gradually increase the damping force to avoid sudden stretching of the seat body and generating greater vibration; when the relative speed is negative and increases, it means that the seat body is in a stretched state and will slow down the stretching. The controller 3.1 should gradually increase the current input to the excitation coil to increase the damping force to avoid sudden changes in the vibration direction and hard collisions of the seat body; when the relative speed is negative and decreases, it means that the seat body is in a stretched state and will continue to stretch. The controller 3.1 should reduce the current input to the excitation coil to reduce the damping force so that the seat body can move downward more smoothly and avoid greater vibrations.

[0078] Embodiment 5:

[0079] A seat vibration reduction system comprises a seat body 1 and a vibration reduction mechanism 2 and a vibration reduction control component 3 arranged at the bottom of the seat body 1;

[0080] See also Figure 8 The vibration reduction mechanism 2 includes an upper mounting component 2.1, a lower mounting component 2.2, a fork arm support 2.5 and a magnetorheological rotation damper 2.6; the upper mounting component 2.1 is arranged at the bottom of the seat body 1, and the lower mounting component 2.2 is correspondingly arranged below the upper mounting component 2.1 and in contact with the vibration source W; the fork arm support 2.5 is movably arranged between the upper mounting component 2.1 and the lower mounting component 2.2, and the fork arm support 2.5 includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are cross-arranged, and a movable fork arm is arranged at the intersection of the two. The upper end of the first fork arm is hinged to the upper mounting part 2.1, and the lower end is hinged to the lower mounting part 2.2; the upper end of the second fork arm is slidably connected to the upper mounting part 2.1 (specifically, a slide groove mechanism is provided on the upper mounting part 2.1, and the upper end of the second fork arm is slidably connected to the slide groove mechanism), and the lower end is hinged to the lower mounting part 2.2; the rotating end of the magnetorheological rotation damper 2.6 is connected to the support rod 2.5.1, and the fixed end is respectively connected to the upper mounting part 2.1 and the lower mounting part 2.2;

[0081] The vibration reduction and regulation component 3 includes a controller 3.1, an acceleration sensor 3.2 and a displacement sensor 3.3. The controller 3.1 is arranged on the upper mounting component 2.1 or the lower mounting component 2.2, and is electrically connected to the magnetorheological rotation damper 2.6; the acceleration sensor 3.2 is arranged on the lower mounting component 2.2, and is connected to the controller 3.1 through a data transmission line; one end of the displacement sensor 3.3 is connected to the upper mounting component 2.1, and the other end is connected to the lower mounting component 2.2, and is connected to the controller 3.1 through a data transmission line.

[0082] See also Fig. 9The magnetorheological rotary damper 2.6 comprises an upper pole plate 2.6.1, a lower pole plate 2.6.2, an excitation coil, a rotating pole plate 2.6.3, a rotating shaft 2.6.4, a first bearing 2.6.5, a second bearing 2.6.6, a first oil seal 2.6.7 and a second oil seal 2.6.8; the upper pole plate 2.6.1 is fixedly arranged on the lower pole plate 2.6.2, and a closed cavity filled with magnetorheological fluid is formed between the two; the upper pole plate 2.6.1 and the lower pole plate 2.6.2 are both connected to the upper mounting component 2.1 and the lower mounting component 2.2; an excitation coil is arranged on the annular inner wall of the closed cavity; the excitation coil is connected to a wire; the wire passes through the upper pole plate 2.6.1 or the lower pole plate 2.6.2 and is connected to the controller 3.1; A power source connected to the wire is arranged in the controller 3.1; the rotating pole plate 2.6.3 is arranged in the mold cavity; a mounting through hole connected to the rotating shaft 2.6.4 is arranged on the rotating pole plate 2.6.3; the rotating shaft 2.6.4 passes through the mounting through hole, one end of which is connected to the lower pole plate 2.6.2 through a first bearing 2.6.5, and the other end is a rotating end, and passes through the upper pole plate 2.6.1 and is connected to the support rod 2.5.1, and the position where the rotating end passes through the upper pole plate 2.6.1 is connected through a second bearing 2.6.6; a first oil seal 2.6.7 is arranged at the connection between the rotating shaft 2.6.4 and the upper pole plate 2.6.1; a second oil seal 2.6.8 is arranged at the connection between the rotating shaft 2.6.4 and the lower pole plate 2.6.2.

[0083] The operating principle of the magnetorheological rotary damper 2.6 is as follows:

[0084] When the controller 3.1 inputs current to the excitation coil through the wire, the magnetic field is excited, and the rotating shaft 2.6.4 drives the rotating pole plate 2.6.3 to rotate in the closed cavity under the action of the support rod 2.5.1, so that the magnetorheological fluid is cut. Under the effect of the magnetic field, the magnetorheological fluid undergoes a rheological reaction, thereby changing the damping force during the cutting process; the damping force is controlled by the controller 3.1 controlling the current input to the excitation coil, thereby controlling the rotational torque of the support rod 2.5.1.

[0085] The vibration reduction mechanism 2 further comprises an elastic support member 2.4 (specifically an air bag 2.3.2 or a mold spring), one end of the elastic support member 2.4 is connected to the upper mounting component 2.1, and the other end is connected to the lower mounting component 2.2.

[0086] The operating principle of the seat vibration reduction system in this embodiment 5 is as follows:

[0087] When the vibration source W drives the seat body to vibrate, the acceleration signal of the vibration source W is detected by the acceleration sensor 3.2, and the data processing module in the controller 3.1 integrates the collected acceleration signal in time to obtain the sprung speed V2; the displacement sensor 3.3 detects the relative displacement signal of the magnetorheological rotary damper 2.6, and the data processing module in the controller 3.1 differentiates the collected relative displacement in time to obtain the relative speed (V2-V1) of the damping mechanism 2. The ceiling control algorithm is used to determine the speed relationship between V1 and V2, control the current size, and thus control the damping force size. For the specific control process, see Example 2.

[0088] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A seat vibration reduction system, characterized in that: It comprises a seat body (1), and a vibration reduction mechanism (2) and a vibration reduction regulating component (3) arranged at the bottom of the seat body (1); The vibration reduction mechanism (2) comprises an upper mounting component (2.1), a lower mounting component (2.2) and a linear magnetorheological damper (2.3); the upper mounting component (2.1) is arranged at the bottom of the seat body (1), and the lower mounting component (2.2) is correspondingly arranged below the upper mounting component (2.1) and in contact with the vibration source (W); one end of the linear magnetorheological damper (2.3) is connected to the upper mounting component (2.1), and the other end is connected to the lower mounting component (2.2); The vibration reduction control component (3) comprises a controller (3.1) and an acceleration sensor (3.2); the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2) and is electrically connected to the linear magnetorheological damper (2.3); the acceleration sensor (3.2) is arranged on the lower mounting component (2.2) and is connected to the controller (3.1) via a data transmission line; Alternatively, the vibration reduction control component (3) comprises a controller (3.1) and two acceleration sensors (3.2), wherein the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2) and is electrically connected to the linear magnetorheological damper (2.3); wherein one acceleration sensor (3.2) is arranged on the upper mounting component (2.1), and the other acceleration sensor (3.2) is arranged on the lower mounting component (2.2), and both acceleration sensors (3.2) are connected to the controller (3.1) via a data transmission line.

2. A seat vibration reduction system, characterized in that: It comprises a seat body (1), and a vibration reduction mechanism (2) and a vibration reduction regulating component (3) arranged at the bottom of the seat body (1); The vibration reduction mechanism (2) comprises an upper mounting component (2.1), a lower mounting component (2.2) and a linear magnetorheological damper (2.3); the upper mounting component (2.1) is arranged at the bottom of the seat body (1), and the lower mounting component (2.2) is correspondingly arranged below the upper mounting component (2.1) and in contact with the vibration source (W); one end of the linear magnetorheological damper (2.3) is connected to the upper mounting component (2.1), and the other end is connected to the lower mounting component (2.2); The vibration reduction control component (3) comprises a controller (3.1), an acceleration sensor (3.2) and a displacement sensor (3.3); the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2), and is electrically connected to the linear magnetorheological damper (2.3); the acceleration sensor (3.2) is arranged on the lower mounting component (2.2), and is connected to the controller (3.1) via a data transmission line; one end of the displacement sensor (3.3) is connected to the upper mounting component (2.1), and the other end is connected to the lower mounting component (2.2), and is connected to the controller (3.1) via a data transmission line; Alternatively, the vibration reduction control component (3) comprises a controller (3.1) and a displacement sensor (3.3); the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2) and is electrically connected to the linear magnetorheological damper (2.3); one end of the displacement sensor (3.3) is connected to the upper mounting component (2.1), and the other end is connected to the lower mounting component (2.2), and is connected to the controller (3.1) via a data transmission line.

3. The seat vibration reduction system according to claim 1 or 2, characterized in that: The linear magnetorheological damper (2.3) comprises a cylinder (2.3.1), an airbag (2.3.2), a guide (2.3.3), a battery core assembly (2.3.4), a connecting rod (2.3.5), an upper connecting piece (2.3.6) and a lower connecting piece (2.3.7); the airbag (2.3.2) and the guide (2.3.3) are respectively arranged at two ends of the cylinder (2.3.1) and are sealedly connected to the cylinder (2.3.1); the cylinder (2.3.1) is filled with magnetorheological fluid; The battery cell assembly (2.3.4) can be slidably arranged in the cylinder (2.3.1); one end of the connecting rod (2.3.5) is arranged on the battery cell assembly (2.3.4), and the other end passes through the guide (2.3.3) and is connected to the upper mounting component (2.1) through the upper connecting member (2.3.6); the lower connecting member (2.3.7) is arranged on one end of the cylinder (2.3.1) connected to the airbag (2.3.2), and is connected to the lower mounting component (2.2).

4. The seat vibration reduction system according to claim 3, characterized in that: The battery core assembly (2.3.4) comprises a battery core (2.3.4.1), an end cover (2.3.4.2) and an excitation coil; the battery core (2.3.4.1) can be slidably arranged in the cylinder (2.3.1), and a gap for the circulation of magnetorheological fluid is arranged between the battery core (2.3.4.1) and the cylinder (2.3.1); one end of the battery core (2.3.4.1) is connected to the end cover (2.3.4.2), and the other end is connected to the connecting rod (2.3.5); an annular groove for mounting the excitation coil is arranged on the outer periphery of the battery core (2.3.4.1); the excitation coil is connected to a wire; the wire passes through the connecting rod (2.3.5) and is connected to the controller (3.1); a power source connected to the wire is arranged in the controller (3.1).

5. The seat vibration reduction system according to claim 3, characterized in that: The vibration reduction mechanism (2) further comprises an elastic support member (2.4), one end of the elastic support member (2.4) being connected to the upper mounting component (2.1) and the other end of the elastic support member (2.4) being connected to the lower mounting component (2.2).

6. The seat vibration reduction system according to claim 3, characterized in that: The vibration reduction mechanism (2) further comprises a fork arm support member (2.5), wherein the fork arm support member (2.5) is movably arranged between the upper mounting member (2.1) and the lower mounting member (2.2); the fork arm support member (2.5) comprises a first fork arm and a second fork arm, wherein the first fork arm and the second fork arm are arranged crosswise, and a rotatable support rod (2.5.1) is arranged at the intersection of the first fork arm and the second fork arm; the upper end of the first fork arm is hinged to the upper mounting member (2.1), and the lower end is hinged to the lower mounting member (2.2); the upper end of the second fork arm is slidably connected to the upper mounting member (2.1).

7. A seat vibration reduction system, characterized in that: It comprises a seat body (1), and a vibration reduction mechanism (2) and a vibration reduction regulating component (3) arranged at the bottom of the seat body (1); The vibration reduction mechanism (2) comprises an upper mounting component (2.1), a lower mounting component (2.2), a fork arm support component (2.5) and a magnetorheological rotation damper (2.6); the upper mounting component (2.1) is arranged at the bottom of the seat body (1), the lower mounting component (2.2) is correspondingly arranged below the upper mounting component (2.1) and in contact with the vibration source (W); the fork arm support component (2.5) is movably arranged between the upper mounting component (2.1) and the lower mounting component (2.2), the fork arm support component (2.5) comprises a first fork arm and a second fork arm, the first fork arm A fork arm is arranged crosswise with the second fork arm, and a rotatable support rod (2.5.1) is arranged at the intersection of the two; the upper end of the first fork arm is hinged to the upper mounting part (2.1), and the lower end is hinged to the lower mounting part (2.2); the upper end of the second fork arm is slidably connected to the upper mounting part (2.1), and the lower end is hinged to the lower mounting part (2.2); the rotating end of the magnetorheological rotary damper (2.6) is connected to the support rod (2.5.1), and the fixed end is respectively connected to the upper mounting part (2.1) and the lower mounting part (2.2); The vibration reduction control component (3) comprises a controller (3.1) and an acceleration sensor (3.2); the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2) and is electrically connected to the magnetorheological rotation damper (2.6); the acceleration sensor (3.2) is arranged on the lower mounting component (2.2) and is connected to the controller (3.1) via a data transmission line; Alternatively, the vibration reduction control component (3) comprises a controller (3.1) and two acceleration sensors (3.2), wherein the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2) and is electrically connected to the magnetorheological rotation damper (2.6); wherein one acceleration sensor (3.2) is arranged on the upper mounting component (2.1), and the other acceleration sensor (3.2) is arranged on the lower mounting component (2.2), and both acceleration sensors (3.2) are connected to the controller (3.1) via a data transmission line.

8. A seat vibration reduction system, characterized in that: It comprises a seat body (1), and a vibration reduction mechanism (2) and a vibration reduction regulating component (3) arranged at the bottom of the seat body (1); The vibration reduction mechanism (2) comprises an upper mounting component (2.1), a lower mounting component (2.2), a fork arm support component (2.5) and a magnetorheological rotation damper (2.6); the upper mounting component (2.1) is arranged at the bottom of the seat body (1), the lower mounting component (2.2) is correspondingly arranged below the upper mounting component (2.1) and in contact with the vibration source (W); the fork arm support component (2.5) is movably arranged between the upper mounting component (2.1) and the lower mounting component (2.2), the fork arm support component (2.5) comprises a first fork arm and a second fork arm, the first fork arm A fork arm is arranged crosswise with the second fork arm, and a rotatable support rod (2.5.1) is arranged at the intersection of the two; the upper end of the first fork arm is hinged to the upper mounting part (2.1), and the lower end is hinged to the lower mounting part (2.2); the upper end of the second fork arm is slidably connected to the upper mounting part (2.1), and the lower end is hinged to the lower mounting part (2.2); the rotating end of the magnetorheological rotary damper (2.6) is connected to the support rod (2.5.1), and the fixed end is respectively connected to the upper mounting part (2.1) and the lower mounting part (2.2); The vibration reduction control component (3) comprises a controller (3.1), an acceleration sensor (3.2) and a displacement sensor (3.3); the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2), and is electrically connected to the magnetorheological rotation damper (2.6); the acceleration sensor (3.2) is arranged on the lower mounting component (2.2), and is connected to the controller (3.1) via a data transmission line; one end of the displacement sensor (3.3) is connected to the upper mounting component (2.1), and the other end is connected to the lower mounting component (2.2), and is connected to the controller (3.1) via a data transmission line; Alternatively, the vibration reduction control component (3) comprises a controller (3.1) and a displacement sensor (3.3); the controller (3.1) is arranged on the upper mounting component (2.1) or the lower mounting component (2.2) and is electrically connected to the magnetorheological rotation damper (2.6); one end of the displacement sensor (3.3) is connected to the upper mounting component (2.1), and the other end is connected to the lower mounting component (2.2), and is connected to the controller (3.1) via a data transmission line.

9. The seat vibration reduction system according to claim 7 or 8, characterized in that: The magnetorheological rotary damper (2.6) comprises an upper pole plate (2.6.1), a lower pole plate (2.6.2), an excitation coil, a rotating pole plate (2.6.3), a rotating shaft (2.6.4), a first bearing (2.6.5), a second bearing (2.6.6), a first oil seal (2.6.7) and a second oil seal (2.6.8); the upper pole plate (2.6.1) is fixedly arranged on the lower pole plate (2.6.2), and a closed cavity filled with magnetorheological fluid is formed between the two; an excitation coil is arranged on the annular inner wall of the closed cavity; the excitation coil is connected to a wire; the wire passes through the upper pole plate (2.6.1) or the lower pole plate (2.6.2) and is connected to the controller (3.1); a power source connected to the wire is arranged in the controller (3.1); The pole plate (2.6.3) is arranged in the mold cavity; a mounting through hole connected to the rotating shaft (2.6.4) is arranged on the rotating pole plate (2.6.3); the rotating shaft (2.6.4) passes through the mounting through hole, one end of which is connected to the lower pole plate (2.6.2) through a first bearing (2.6.5), and the other end is a rotating end, which passes through the upper pole plate (2.6.1) and is connected to the support rod (2.5.1), and the position where the rotating end passes through the upper pole plate (2.6.1) is connected through a second bearing (2.6.6); a first oil seal (2.6.7) is arranged at the connection between the rotating shaft (2.6.4) and the upper pole plate (2.6.1); and a second oil seal (2.6.8) is arranged at the connection between the rotating shaft (2.6.4) and the lower pole plate (2.6.2).

10. The seat vibration reduction system according to claim 9, characterized in that: The vibration reduction mechanism (2) further comprises an elastic support member (2.4), one end of the elastic support member (2.4) being connected to the upper mounting component (2.1) and the other end of the elastic support member (2.4) being connected to the lower mounting component (2.2).

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