Shock absorber and vehicle

Abstract

The shock absorber comprises a first assembly, a second assembly and a position detection assembly, one of the first assembly and the second assembly is a stator assembly, the other one of the first assembly and the second assembly is a rotor assembly, a sliding cavity is defined in the first assembly, the second assembly is matched with the sliding cavity in a sliding mode in the preset direction, and the position detection assembly is arranged in the sliding cavity. A cavity is defined in the second assembly, a communication opening is formed in one end, in the preset direction, of the second assembly to communicate the cavity with the sliding cavity, the position detection assembly is arranged in the sliding cavity and / or the cavity and used for detecting the position, in the preset direction, of the rotor assembly, and the position detection assembly comprises a signal transmitter and a signal receiver; the signal transmitter and the signal receiver are arranged opposite to the communication port in the preset direction. The shock absorber provided by the utility model has the advantages of good detection precision, compact structure and small occupied space.

Description

Technical Field

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

[0002] In the related art, the shock absorber is provided with a stator assembly and a mover assembly, so that the shock absorber can adjust the body posture through the electromagnetic cooperation of the stator assembly and the mover assembly. Among them, a detection assembly is provided inside the shock absorber, and the detection assembly is used to detect the displacement of the mover assembly relative to the stator assembly to obtain the change in the height of the body. However, in the related art, the shock absorber structure is not set reasonably, and it is difficult to provide a suitable layout space for the detection assembly, which easily makes the shock absorber occupy a large space. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a vibration damper, which has good detection accuracy and service life, occupies a small space, and has good structural compactness.

[0004] The utility model also provides a vehicle with the shock absorber.

[0005] According to the shock absorber of the first aspect embodiment of the utility model, it includes: a first component and a second component, one of the first component and the second component is a stator component, and the other is a movable component, a sliding cavity is defined in the first component, the second component is slidably fitted in the sliding cavity along a preset direction, a cavity is defined in the second component, and a connecting port is formed at one end of the second component in the preset direction to connect the cavity and the sliding cavity; a position detection component, the position detection component is arranged in the sliding cavity and / or the cavity, the position detection component is used to detect the position of the movable component relative to the stator component in the preset direction, and includes a signal transmitter and a signal receiver, the signal transmitter and the signal receiver are both arranged relative to the connecting port in the preset direction, the signal transmitter is used to transmit a detection signal toward the connecting port, and the signal receiver is used to receive the detection signal transmitted by the signal transmitter.

[0006] According to the shock absorber of the embodiment of the utility model, a position detection component is provided for detecting the relative position of the first component and the second component in a preset direction, so that through active detection, the current relative position of the two can be well measured regardless of whether it is in a static state or a moving state, and the shock absorber has good detection accuracy and service life; moreover, the position detection component is arranged in the sliding cavity and / or the cavity to reasonably utilize the internal space of the shock absorber, and at the same time cooperates with the detection method of the position detection component along the preset direction to effectively save the size of the shock absorber in a direction perpendicular to the preset direction, which is beneficial to improving the structural compactness of the shock absorber.

[0007] In some embodiments, the signal transmitter and the signal receiver are integrated and arranged on the same side of the connecting port in the preset direction, the signal transmitter and the signal receiver are both arranged in one of the first component and the second component, and the other of the first component and the second component is provided with a signal reflecting member, and the signal reflecting member is used to reflect the detection signal emitted by the signal transmitter toward the signal receiver; or, the signal transmitter and the signal receiver are separately arranged and respectively arranged on opposite sides of the connecting port in the preset direction, one of the signal transmitter and the signal receiver is arranged in the first component, and the other is arranged in the second component.

[0008] In some embodiments, the sliding cavity has a mating opening at one end in the preset direction, the second component is inserted into the mating opening, and when the signal transmitter and the signal receiver are integrated, the signal transmitter and the signal receiver are both arranged in the cavity, and the signal reflector is arranged on a side wall of the sliding cavity away from the mating opening.

[0009] In some embodiments, one end of the second component away from the connecting port extends out of the sliding cavity and forms a mounting port connected to the cavity, and the signal transmitter and the signal receiver are both arranged at the mounting port.

[0010] In some embodiments, the cavity includes a first chamber and a second chamber arranged in sequence along the preset direction, the connecting port is formed on a side of the first chamber away from the second chamber, and the second component is constructed so that the first chamber is always located in the sliding chamber and the second chamber is passed through the matching port, the cross-sectional area of ​​the first chamber is larger than the cross-sectional area of ​​the second chamber and the opening area of ​​the matching port, and the signal transmitter and the signal receiver are both arranged in the second chamber.

[0011] In some embodiments, the position detection component is a laser sensor.

[0012] In some embodiments, the shock absorber further includes: a first buffer member, which is fixed to the inner wall of the sliding cavity and arranged around the second component; and a second buffer member, which is fixed to the second component and arranged around a portion of the second component located outside the sliding cavity.

[0013] In some embodiments, the shock absorber further includes: a protective member, which is disposed around the second buffer member, and two ends of the protective member are respectively sealed and connected to the first component and the second component.

[0014] In some embodiments, the shock absorber also includes: a first mounting seat, the first mounting seat is fixed to the first component; a second mounting seat, the second mounting seat is fixed to the second component; and a shock-absorbing spring, the shock-absorbing spring is sleeved outside the second buffer member and stopped between the first mounting seat and the second mounting seat.

[0015] In some embodiments, the first component is a stator component, the second component is a mover component, the stator component further includes a stator coil and a stator body, the stator body defines the sliding cavity, the stator coil is arranged on the inner wall of the sliding cavity, the mover component includes a mover body and a mover magnet, the mover body cooperates with the sliding cavity, the mover magnet is arranged on the mover body and is at least partially located in the sliding cavity.

[0016] The vehicle according to the second aspect of the present invention comprises the shock absorber according to the first aspect of the present invention, wherein one of the stator assembly and the mover assembly is suitable for connection with the wheel of the vehicle, and the other is suitable for connection with the body of the vehicle.

[0017] The vehicle according to the embodiment of the utility model, by adopting the above-mentioned shock absorber, is conducive to improving the detection accuracy of the vehicle's own posture, facilitating the improvement of comfort, and facilitating the freeing up of a certain space for other components of the vehicle, which is conducive to reasonable layout.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a shock absorber according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional view of the shock absorber shown in ;

[0022] Figure 3 yes Figure 2 A partial cross-sectional view of the shock absorber shown in ;

[0023] Figure 4 yes Figure 2 Another partial cross-sectional view of the shock absorber shown in ;

[0024] Figure 5 yes Figure 2 The measurement logic diagram of the shock absorber is shown.

[0025] Reference numerals

[0026] Shock absorber 100,

[0027] First component 1, sliding cavity 10, matching port 10a,

[0028] The second component 2, the cavity 20, the communication port 20a, the installation port 20b, the first chamber 20c, the second chamber 20d,

[0029] stator assembly 3, stator coil 31, stator body 32, cylinder 321, first cover plate 322, second cover plate 323, push rod 324,

[0030] The mover assembly 4, the mover magnetic steel 41, the mover body 42,

[0031] Position detection component 5, connecting line 50, signal transmitter 51, signal receiver 52, signal reflection element 53,

[0032] The first buffer 61, the second buffer 62, the protective member 7,

[0033] The first mounting seat 81 , the second mounting seat 82 , the seat body 821 , the mounting plate 822 , the bushing 823 , the damping spring 83 , and the clamping nut 84 . DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0036] Hereinafter, a shock absorber 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0037] like Figure 1 and Figure 2As shown, the shock absorber 100 includes a first component 1 and a second component 2, one of which is a stator component 3, and the other of which is a mover component 4. The stator component 3 and the mover component 4 move and match along a preset direction (for example, the axial direction of the shock absorber 100), and the stator component 3 includes a stator coil 31. A sliding cavity 10 is defined in the first component 1, and the second component 2 is slidingly matched in the sliding cavity 10 along the preset direction.

[0038] Obviously, the first component 1 and the second component 2 move and cooperate along the preset direction, and the length of the portion of the second component 2 extending into the sliding cavity 10 in the preset direction changes with the relative movement of the first component 1 and the second component 2; the stator component 3 and the mover component 4 interact with each other to produce an action, and the action force can make the mover component 4 and the stator component 3 move relative to each other along the preset direction, that is, form a thrust or resistance of the shock absorber 100. Exemplarily, when the shock absorber 100 is used in a vehicle, the shock absorber 100 can be connected between the vehicle body and the wheel to change the height of the vehicle body relative to the wheel to adjust the posture of the whole vehicle body, which is conducive to making the vehicle drive in a suitable posture.

[0039] The second component 2 defines a cavity 20, and a communication port 20a is formed at one end of the second component 2 in a preset direction to connect the cavity 20 and the sliding cavity 10. The communication port 20a is formed on the portion of the second component 2 extending into the sliding cavity 10, and the communication port 20a is located at one end of the portion of the second component 2 extending into the sliding cavity 10. Therefore, by providing the sliding cavity 10 and the cavity 20, it is beneficial to appropriately reduce the weight of the first component 1 and the second component 2, and at the same time, it is convenient to provide a certain arrangement space for other components (such as the position detection component 5 described later).

[0040] It can be understood that when the first component 1 is the stator component 3 and the second component 2 is the movable component 4, a sliding cavity 10 is defined in the stator component 3, a portion of the movable component 4 extends into the sliding cavity 10, and a cavity 20 is defined in the movable component 4; when the first component 1 is the movable component 4 and the second component 2 is the stator component 3, a sliding cavity 10 is defined in the movable component 4, a portion of the stator component 3 extends into the sliding cavity 10, and a cavity 20 is defined in the stator component 3.

[0041] For example, in Figure 2In the example, taking the preset direction as the up and down direction as an example, at least the lower portion of the second component 2 extends into the sliding cavity 10, and at least the portion of the second component 2 extending into the sliding cavity 10 defines a cavity 20, that is, at least the lower portion of the cavity wall of the cavity 20 is located in the sliding cavity 10, and a connecting port 20a is formed at the lower end of the cavity 20 to connect the cavity 20 and the sliding cavity 10; of course, in other examples, at least the upper portion of the second component 2 extends into the sliding cavity 10, and at least the portion of the second component 2 extending into the sliding cavity 10 defines a cavity 20, and a connecting port 20a is formed at the upper end of the cavity 20 to connect the cavity 20 and the sliding cavity 10.

[0042] like Figure 2 As shown, the shock absorber 100 also includes a position detection component 5, which is used to detect the position of the movable component 4 relative to the stator component 3 in a preset direction. The position detection component 5 can measure the position change of the movable component 4 relative to the stator component 3 over a period of time to obtain the displacement of the movable component 4 relative to the stator component 3. At this time, the speed, acceleration, etc. of the movable component 4 can be obtained by performing a function analysis on time.

[0043] It can be seen that the position detection component 5 in the present application is an active detection component with strong self-learning ability. It can correct deviations through self-learning without the need for large-scale equipment to assist in correction and learning, and can well measure the position of the movable component 4 relative to the stator component 3 regardless of whether it is in a stationary state or a moving state. That is to say, in the current state, regardless of whether the movable component 4 moves relative to the stator component 3, the position detection component 5 can detect the current position of the movable component 4 relative to the stator component 3, so that when the shock absorber 100 is used in a vehicle, it is convenient for vehicle offline detection and calibration.

[0044] In addition, compared with some technologies that use passive detection components, such as transmission machinery or grating guide rails + scanning head sensors, etc., the passive detection components are used to detect the displacement of the mover component 4 relative to the stator component 3. When the mover component 4 moves slowly relative to the stator component 3 or the mover component 4 is stationary relative to the stator component 3, there is a large deviation in the measurement of the passive detection component. The position detection component 5 in the present application can effectively solve the above problems. At the same time, the above-mentioned setting of the present application is basically not limited by the loss of physical structure. When the shock absorber 100 is used in a vehicle, the influence of suspension movement and force and the loss of components have little effect on the detection accuracy of the position detection component 5, and basically have no significant impact, which effectively improves the service life.

[0045] Among them, the position detection component 5 is arranged in the sliding cavity 10 and / or the cavity 20, and can include the following multiple parallel schemes: 1. The position detection component 5 is arranged in the sliding cavity 10, and at least part of the position detection component 5 is located in the sliding cavity 10; 2. The position detection component 5 is arranged in the cavity 20, and at least part of the position detection component 5 is located in the cavity 20. At this time, there is no specific restriction on the position of the position detection component 5 relative to the sliding cavity 10. For example, the position detection component 5 can always be located in the sliding cavity 10, or it can always be located outside the sliding cavity 10, and it can also follow the relative movement of the second component 2 and the first component 1 to realize switching between a first position located in the sliding cavity 10 and a second position located outside the sliding cavity 10; 3. The position detection component 5 is arranged in the sliding cavity 10 and the cavity 20, and at least part of the position detection component 5 is located in the space area formed by the sliding cavity 10 and the cavity 20.

[0046] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] The position detection component 5 includes a signal transmitter 51 and a signal receiver 52. The signal transmitter 51 and the signal receiver 52 are both arranged relative to the connecting port 20a in a preset direction. Then, on a plane perpendicular to the preset direction, at least part of the orthographic projection of the signal transmitter 51 is located within the orthographic projection range of the outer peripheral wall of the connecting port 20a, and at least part of the orthographic projection of the signal receiver 52 is also located within the orthographic projection range of the outer peripheral wall of the connecting port 20a; the signal transmitter 51 is used to transmit a detection signal toward the connecting port 20a, so that the detection signal emitted by the signal transmitter 51 can pass through the connecting port 20a, and the signal receiver 52 is used to receive the detection signal emitted by the signal transmitter 51, so that the signal emitted by the signal transmitter 51 is received by the signal receiver 52 after passing through the connecting port 20a.

[0048] It can be understood that the signal receiver 52 can be used to directly receive the detection signal emitted by the signal transmitter 51, and the detection signal emitted by the signal transmitter 51 can be transmitted in the sliding cavity 10 and the cavity 20 until it is received by the signal receiver 52. At this time, the signal transmitter 51 and the signal receiver 52 can be located on opposite sides of the connecting port 20a in a preset direction, and the signal transmitter 51 can emit the detection signal toward the signal receiver 52; of course, the signal receiver 52 can also be used to indirectly receive the detection signal emitted by the signal transmitter 51. At this time, the detection signal emitted by the signal transmitter 51 can be received by the signal receiver 52 after at least one reflection. For example, the signal transmitter 51 and the signal receiver 52 can be located on the same side of the connecting port 20a in a preset direction.

[0049] It can be seen that, since the position detection component 5 is arranged in the sliding cavity 10 and / or the cavity 20, and the setting of the connecting port 20a can allow the detection signal emitted by the signal transmitter 51 to pass through, the first component 1 and the second component 2 will not block the transmission of the detection signal, which is conducive to the first component 1 and the second component 2 not affecting the detection accuracy of the position detection component 5, and at the same time facilitates the arrangement of the signal transmitter 51 and the signal receiver 52 and the transmission of the detection signal. Moreover, the detection signal of the position detection component 5 can be transmitted along a preset direction or along a direction inclined relative to the preset direction. In a plane perpendicular to the preset direction, the position detection component 5 will not occupy too much space, which is conducive to improving the design compactness of the shock absorber 100; for example, when the preset direction is the axial direction of the shock absorber 100, the measurement method of the position detection component 5 is basically axial measurement. Compared with some technologies, the grating guide + scanning head obtains the displacement of the mover component 4 by radial measurement, that is, the grating guide and the scanning head are arranged at intervals along the radial direction. The above-mentioned setting of the present application can save the radial size of the shock absorber 100 to a great extent, making the design of the shock absorber 100 more compact.

[0050] Moreover, other components of the stator assembly 3 and other components of the movable assembly 4 (for example, the stator coil 31 and movable magnet 41 described later may be arranged) need to be arranged in the sliding cavity 10. Usually, the sliding cavity 10 needs to have a suitable radial dimension. The present application arranges the position detection component 5 in the sliding cavity 10 and / or the cavity 20 so as to make more reasonable use of the internal space of the shock absorber 100.

[0051] According to the shock absorber 100 of the embodiment of the utility model, a position detection component 5 is provided for detecting the relative position of the first component 1 and the second component 2 in a preset direction, so that through active detection, the current relative position of the two can be well measured regardless of being in a stationary state or a moving state, and the shock absorber 100 has good detection accuracy and service life; moreover, the position detection component 5 is arranged in the sliding cavity 10 and / or the cavity 20 to reasonably utilize the internal space of the shock absorber 100, and at the same time cooperates with the detection method of the position detection component 5 along the preset direction to effectively save the size of the shock absorber 100 in a direction perpendicular to the preset direction, which is beneficial to improving the structural compactness of the shock absorber 100.

[0052] It should be noted that, in the description of this application, “the axial direction of the shock absorber 100” refers to the axial direction of the stator assembly 3 or the axial direction of the mover assembly 4. Figure 2 The extension direction of the dotted line L, the dotted line L is the central axis of the stator assembly 3 and the movable assembly 4, and the "radial direction of the shock absorber 100" is the radial direction of the stator assembly 3, which refers to the direction passing through the central axis of the stator assembly 3 on the radial plane of the stator assembly 3. The "radial" is perpendicular to the "axial".

[0053] In some embodiments, the sliding cavity 10 has a matching opening 10a at one end in a preset direction, and the second component 2 is inserted into the matching opening 10a, so that a portion of the second component 2 extends into the sliding cavity 10. Figure 2 In the example, taking the preset direction as the up and down direction as an example, the mating port 10a is formed at the top of the sliding cavity 10, and the mating port 10a is connected to the sliding cavity 10, at least the lower part of the second component 2 is penetrated through the mating port 10a and extends into the sliding cavity 10, and at least the part of the second component 2 extending into the sliding cavity 10 defines the cavity 20, that is, at least the lower part of the cavity wall of the cavity 20 is located in the sliding cavity 10, and the lower end of the cavity 20 is formed with a connecting port 20a to connect the cavity 20 and the sliding cavity 10; of course, in other examples, the mating port 10a can also be formed at the bottom of the sliding cavity 10, at least the upper part of the second component 2 is penetrated through the mating port 10a and extends into the sliding cavity 10, and at least the part of the second component 2 extending into the sliding cavity 10 defines the cavity 20, and the upper end of the cavity 20 is formed with a connecting port 20a to connect the cavity 20 and the sliding cavity 10.

[0054] In some embodiments, Figure 2 and Figure 3 As shown, the signal transmitter 51 and the signal receiver 52 are integrated, and the signal transmitter 51 and the signal receiver 52 are arranged on the same side of the communication port 20a in a preset direction. The signal transmitter 51 and the signal receiver 52 are both arranged in one of the first component 1 and the second component 2. The other of the first component 1 and the second component 2 is provided with a signal reflector 53, and the signal reflector 53 is used to reflect the detection signal emitted by the signal transmitter 51 toward the signal receiver 52. Therefore, it is beneficial to save the occupied space of the signal transmitter 51 and the signal receiver 52, and at the same time, the wiring of the signal transmitter 51 and the signal receiver 52 will not be too scattered, which is convenient for wiring arrangement.

[0055] Therefore, the signal transmitter 51 and the signal receiver 52 are both arranged in the first component 1 or the second component 2, which can effectively avoid the position detection component 5 from having a large measurement deviation when the shock absorber 100 is subjected to lateral force, which is beneficial to improving the measurement accuracy of the position detection component 5; moreover, the above-mentioned setting is particularly suitable for the situation where there is no medium such as oil inside the shock absorber 100, so as to ensure that the detection signal can smoothly reach the signal reflection component 53 to be reflected.

[0056] Among them, the signal transmitter 51 and the signal receiver 52 are arranged on the same side of the connecting port 20a in a preset direction, and may include the following multiple parallel schemes: 1. The signal transmitter 51 and the signal receiver 52 are both arranged in the cavity 20. At this time, the signal transmitter 51 and the signal receiver 52 can be both fixedly mounted on the second component 2, and there is no specific restriction on the relative positions of the signal transmitter 51 and the signal receiver 52 and the sliding cavity 10. For example, the signal transmitter 51 and the signal receiver 52 can both always be located in the sliding cavity 10, or can both always be located outside the sliding cavity 10, or can both follow the relative movement of the second component 2 and the first component 1 to switch between a first position located in the sliding cavity 10 and a second position located outside the sliding cavity 10; 2. The signal transmitter 51 and the signal receiver 52 are both arranged in the sliding cavity 10 and are suitable for being located outside the cavity 20. At this time, the signal transmitter 51 and the signal receiver 52 can both be fixedly mounted on the first component 1.

[0057] The following is an example in which the signal reflecting element 53 is arranged in the first component 1, and the signal transmitter 51 and the signal receiver 52 are both arranged in the second component 2. After reading the following description, those skilled in the art can easily understand the implementation scheme in which the signal reflecting element 53 is arranged in the second component 2, and the signal transmitter 51 and the signal receiver 52 are both arranged in the first component 1.

[0058] exist Figure 2-Figure 4 In the example, the preset direction is the up-down direction, the signal reflector 53 is fixed on the bottom wall of the sliding cavity 10 and is suitable for being located at the lower side of the connecting port 20a, the signal transmitter 51 and the signal receiver 52 are both fixed on the second component 2 and are both located above the connecting port 20a, the signal transmitter 51 transmits the detection signal downward, and the detection signal passes through the connecting port 20a and is reflected by the signal reflector 53 and transmitted upward until it is received by the signal receiver 52. Of course, the signal reflector 53 can be provided on the top wall of the sliding cavity 10 and is suitable for being located at the upper side of the connecting port 20a.

[0059] Optionally, the signal reflector 53 is a reflective patch, which is helpful to improve the reflective ability of the signal reflector 53 to the detection signal. Of course, the signal reflector 53 can also be a reflective coating applied to the corresponding surface; or, the signal reflector 53 can also be a partial surface of the first component 1 or a partial surface of the second component 2, for example, the signal reflector 53 is arranged on the bottom wall of the sliding cavity 10, and at least part of the bottom wall of the sliding cavity 10 can be formed as the signal reflector 53 to reflect the detection signal. It can be seen that the signal reflector 53 can be integrally formed with the first component 1 or integrally formed with the second component 2, and can also be installed on the first component 1 or the second component 2 by assembly means.

[0060] Of course, the present application is not limited to this; in some other embodiments of the present application, the signal transmitter 51 and the signal receiver 52 are separately arranged, and the signal transmitter 51 and the signal receiver 52 are respectively arranged on opposite sides of the connecting port 20a in a preset direction, one of the signal transmitter 51 and the signal receiver 52 is arranged in the first component 1, and the other of the signal transmitter 51 and the signal receiver 52 is arranged in the second component 2; at this time, the detection signal emitted by the signal transmitter 51 can be directly received by the signal receiver 52 after passing through the connecting port 20a, and there is no need to set the signal reflecting member 53, which is conducive to simplifying the structure of the shock absorber 100.

[0061] The following description will be made by taking the example that the signal transmitter 51 is arranged in the second component 2 and the signal receiver 52 is arranged in the first component 1. After reading the following description, those skilled in the art will easily understand other parallel implementation schemes.

[0062] Exemplarily, the preset direction is the up-down direction, the signal transmitter 51 is arranged in the cavity 20 and is located above the connecting port 20a, the signal receiver 52 is arranged on the bottom wall of the sliding cavity 10 and is suitable for being located at the lower side of the connecting port 20a, the signal transmitter 51 transmits the detection signal downward, and the detection signal passes through the connecting port 20a until it is received by the signal receiver 52; at this time, the signal transmitter 51 can always be located in the sliding cavity 10, can also always be located outside the sliding cavity 10, and can also follow the relative movement of the second component 2 and the first component 1 to switch between the first position located in the sliding cavity 10 and the second position located outside the sliding cavity 10. Of course, the signal receiver 52 can be arranged on the top wall of the sliding cavity 10 and is suitable for being located at the upper side of the connecting port 20a.

[0063] It is understandable that, whether the signal transmitter 51 and the signal receiver 52 are integrated or separated, the position of the moving subassembly 4 relative to the stator assembly 3 can be calculated based on the signal amount received by the signal receiver 52. The signal amount may include at least one of the flight time (i.e., the time interval between transmission and reception), signal strength, etc., but is not limited thereto. The signal strength can be understood as the signal amplitude. Moreover, whether the signal transmitter 51 and the signal receiver 52 are integrated or separated, the measurement space of the position detection assembly 5 has a certain degree of closure, so as to effectively reduce the influence of the external environment on the position detection assembly 5 and improve the detection reliability.

[0064] In some embodiments, Figure 2-Figure 4As shown, the sliding cavity 10 has a mating opening 10a at one end in a preset direction, and the second component 2 is arranged through the mating opening 10a. When the signal transmitter 51 and the signal receiver 52 are integrated, the signal transmitter 51 and the signal receiver 52 are both arranged in the cavity 20. If the signal transmitter 51 and the signal receiver 52 need to be installed in the second component 2 before the first component 1 and the second component 2 are assembled, then during the assembly process of the first component 1 and the second component 2, since a part of the second component 2 extends into the sliding cavity 10, the signal transmitter 51 and the signal receiver 52 will not interfere with the above assembly; of course, the shock absorber 100 can also be constructed to assemble the first component 1 and the second component 2 first, and then install the signal transmitter 51 and the signal receiver 52. At this time, the first component 1 will not interfere with the installation of the signal transmitter 51 and the signal receiver 52. This is conducive to improving the assembly convenience of the shock absorber 100.

[0065] The signal reflector 53 is disposed on a side wall of the sliding cavity 10 away from the mating port 10a, so that the signal reflector 53 is disposed relative to the signal transmitter 51 and the signal receiver 52 along a preset direction, and the signal reflector 53 is disposed relative to the connecting port 20a along a preset direction, so that the signal receiver 52 can smoothly receive the detection signal reflected by the signal reflector 53. In addition, the signal reflector 53 will not occupy too much space on a plane perpendicular to the preset direction, which is conducive to further improving the compactness of the shock absorber 100.

[0066] In some embodiments, Figure 2-Figure 4 As shown, one end of the second component 2 away from the connecting port 20a extends out of the sliding cavity 10, and the other end of the second component 2 away from the connecting port 20a is formed with an installation port 20b connected to the cavity 20, and the signal transmitter 51 and the signal receiver 52 are both arranged at the installation port 20b. At this time, during the relative movement of the first component 1 and the second component 2, the signal transmitter 51 and the signal receiver 52 can always be located outside the sliding cavity 10, which is convenient for increasing the distance between the signal transmitter 51 and the signal receiver 52 and the magnetic fields of the stator component 3 and the mover component 4, and making the signal transmitter 51 and the signal receiver 52 basically outside the above-mentioned magnetic field range, so as to effectively reduce the interference of the magnetic field on the position detection component 5, which is beneficial to improving the detection accuracy; moreover, the signal transmitter 51, the signal receiver 52 and the connecting line 50 of the position detection component 5 (the connecting line 50 may include the routing of at least one of the signal transmitter 51 and the signal receiver 52) are not limited by the spatial size of the sliding cavity 10, which is beneficial for further improving the layout convenience and routing convenience of the position detection component 5, thereby facilitating improving the applicability of the shock absorber 100.

[0067] Of course, the position detection component 5 may not be provided with the connecting line 50. In this case, the position detection component 5 can transmit data with other components wirelessly.

[0068] For example, in Figure 2-Figure 4 In the example, the preset direction is the up and down direction, the matching port 10a is formed at the top of the sliding cavity 10, the connecting port 20a is formed at the bottom of the cavity 20, and the installation port 10b is formed at the top of the cavity 20, then the signal transmitter 51 and the signal receiver 52 can be both arranged at the top of the shock absorber 100 to improve the convenience of layout, and the connecting line 50 can be directly extended upward to further improve the convenience of wiring; moreover, compared with some technologies, the detection component is placed externally and needs to be lifted and disassembled, and the disassembly is cumbersome, and the grating guide rail + scanning head sensor is arranged inside, and the replacement requires the replacement of the shock absorber at the same time, and the maintenance cost is too high. In this application, by arranging the signal transmitter 51 and the signal receiver 52 at the top of the shock absorber 100, the disassembly and replacement can be completed without auxiliary equipment such as a lift, thereby improving the convenience of after-sales maintenance.

[0069] Optionally, when the signal transmitter 51 and the signal receiver 52 are both disposed at the mounting opening 20 b , the position detection component 5 is snap-fitted, bonded, or threadedly connected to the second component 2 .

[0070] Optionally, the connecting line 50 includes wiring of the signal transmitter 51 and the signal receiver 52 , and the connecting line 50 is directly press-fitted or plug-fitted to the signal transmitter 51 and the signal receiver 52 .

[0071] In some embodiments, Figure 2-Figure 4 As shown, the cavity 20 includes a first chamber 20c and a second chamber 20d which are arranged in sequence along a preset direction, a connecting port 20a is formed on a side of the first chamber 20c away from the second chamber 20d, and the second component 2 is constructed so that the first chamber 20c is always located in the sliding chamber 10 and the second chamber 20d is passed through the matching port 10a, and the cross-sectional area of ​​the first chamber 20c is greater than the cross-sectional area of ​​the second chamber 20d and the opening area of ​​the matching port 10a. When the cavity wall of the second chamber 20c directly or indirectly abuts against the cavity wall of the sliding chamber 10 where the matching port 10a is formed, the second component 2 can be restricted from continuing to move out of the sliding chamber 10 to avoid the second component 2 from being disengaged from the first component 1, and at the same time, it is convenient to make the positive projection of the inner circumferential wall of the second chamber 20c on a plane perpendicular to the preset direction all located within the positive projection range of the outer circumferential edge of the connecting port 20a, to ensure that the signal transmitter 51 transmits a detection signal toward the connecting port 20a to be reflected toward the signal receiver 52 by the signal reflecting member 53.

[0072] Among them, the signal transmitter 51 and the signal receiver 52 are both arranged in the second chamber 20d, and at least part of the signal transmitter 51 and the signal receiver 52 are arranged in the second chamber 20d, so that the second chamber 20d provides a suitable arrangement space for the signal transmitter 51 and the signal receiver 52, which is conducive to making the signal transmitter 51 and the signal receiver 52 directly fixed to the cavity wall of the second chamber 20d.

[0073] For example, in Figure 2-Figure 4 In the example, a mounting opening 20b is formed at one end of the second chamber 20d away from the first chamber 20c, and the signal transmitter 51 and the signal receiver 52 are both arranged at the mounting opening 20b to improve the convenience of wiring. Of course, the signal transmitter 51 and the signal receiver 52 can also be arranged at other positions of the second chamber 20d, not limited to the mounting opening 20b.

[0074] In some embodiments, the position detection component 5 is a laser sensor, and the measurement frequency of the laser sensor can be flexibly set. Especially when the measurement frequency of the laser sensor is high, the laser sensor measures the position change of the movable component 4 relative to the stator component 3 over a period of time to obtain the displacement of the movable component 4 relative to the stator component 3. At this time, the speed and acceleration of the movable component 4 can be obtained by performing a function analysis on time, which is beneficial to reduce measurement deviation and improve measurement accuracy.

[0075] Of course, the type of the position detection component 5 is not limited, and the position detection component 5 can also be other types of active sensors, such as an acoustic wave sensor.

[0076] In some embodiments, Figure 2 As shown, the shock absorber 100 also includes a first buffer member 61, which is fixed to the inner wall of the sliding cavity 10, and the first buffer member 61 is arranged around the second component 2 to limit the maximum axial length of the shock absorber 100, that is, to limit the maximum displacement of the movable component 4 relative to the stator component 3, reduce the collision between the movable component 4 and the stator component 3, thereby reducing the damage to the movable component 4 and the stator component 3, so as to play a role of limiting protection; exemplarily, the sliding cavity 10 has a mating opening 10a at one end in a preset direction, and the second component 2 is penetrated through the mating opening 10a, so that a part of the second component 2 extends into the sliding cavity 10, and the first buffer member 61 is arranged around the mating opening 10a.

[0077] The shock absorber 100 also includes a second buffer member 62, which is fixed to the second component 2 and is arranged around the portion of the second component 2 located outside the sliding cavity 10 to limit the minimum axial length of the shock absorber 100, that is, to limit the minimum displacement of the movable component 4 relative to the stator component 3, reduce the collision between the movable component 4 and the stator component 3, thereby reducing the damage to the movable component 4 and the stator component 3, so as to play a role of limiting protection.

[0078] Optionally, the first buffer member 61 and the second buffer member 62 are rubber members or the like.

[0079] exist Figure 2 In the example, the preset direction is the up and down direction, the mating port 10a is formed at the top of the sliding cavity 10, the connecting port 20a is formed at the bottom of the cavity 20, the first buffer 61 is arranged on the top wall of the sliding cavity 10, and the first buffer 61 is arranged around the mating port 10a and the part of the second component 2 passing through the mating port 10a, so as to limit the second component 2 from continuing to move upward when the second component 2 moves upward to the upper jump position stroke limit position relative to the first component 1; the second buffer 62 is arranged above the first component 1 and around the upper part of the second component 2 extending out of the sliding cavity 10, so as to limit the second component 2 from continuing to move downward when the second component 2 moves downward to the lower jump position stroke limit position relative to the first component 1.

[0080] In some embodiments, Figure 2 and Figure 3 As shown, the shock absorber 100 also includes a protective member 7, which is arranged around the second buffer member 62, and the two ends of the protective member 7 are respectively sealed and connected to the first component 1 and the second component 2, so that the protective member 7, the first component 1 and the second component 2 define a sealed cavity. The protective member 7 is arranged in the sealed cavity to realize the dustproof and waterproof settings of the second buffer member 62, so as to enhance the protection capability of the shock absorber 100.

[0081] It can be understood that the length of the protective member 7 in a preset direction is adjustable so that the protective member 7 can adapt to the relative movement of the first component 1 and the second component 2 .

[0082] In some embodiments, Figure 2 and Figure 3As shown, the shock absorber 100 also includes a first mounting seat 81, a second mounting seat 82 and a shock-absorbing spring 83. The first mounting seat 81 is fixed to the first component 1, the second mounting seat 82 is fixed to the second component 2, and the shock-absorbing spring 83 is sleeved outside the second buffer member 62. Then, on the plane passing through the central axis L of the shock absorber 100, the orthographic projection of the shock-absorbing spring 83 and the orthographic projection of the second buffer member 62 at least partially overlap, and the shock-absorbing spring 83 stops between the first mounting seat 81 and the second mounting seat 82 to absorb the vibration transmitted from the ground to the vehicle body when the vehicle is driving, thereby ensuring that the vehicle has good driving smoothness, and at the same time helps to reduce the space occupied by the shock absorber 100 in a preset direction.

[0083] Of course, the position of the shock-absorbing spring 83 is not limited to this. The position of the shock-absorbing spring 83 in the preset direction can be set according to actual needs. For example, if the preset direction is the up and down direction, the shock-absorbing spring 83 can be arranged at the upper part, middle part, or lower part of the shock absorber 100 to meet the needs of different vehicle models; or the shock-absorbing spring 83 is arranged outside the shock absorber 100 to be independent of the shock absorber 100.

[0084] For example, in Figure 2 and Figure 3 In the example, the shock absorber 100 includes a protective member 7, a first mounting seat 81, a second mounting seat 82 and a shock-absorbing spring 83. One end of the protective member 7 is sealed with the first mounting seat 81, so that the protective member 7 is connected to the first component 1 through the first mounting seat 81, and the other end of the protective member 7 is sealed with the second mounting seat 82, so that the protective member 7 is connected to the second component 2 through the second mounting seat 82, so that the protective member 7 and the first mounting seat 81 and the second mounting seat 82 jointly define a sealed cavity, and the second buffer member 62 is arranged in the sealed cavity to achieve dust and other protection for the second buffer member 62; the shock-absorbing spring 83 is sleeved on the outside of the protective member 7.

[0085] In some embodiments, Figure 2-Figure 4 As shown, the first component 1 is the stator component 3, the second component 2 is the mover component 4, the stator component 3 also includes a stator coil 31 and a stator body 32, the stator body 32 defines a sliding cavity 10, the stator coil 31 is arranged on the inner wall of the sliding cavity 10, the mover component 4 includes a mover body 42 and a mover magnet 41, the mover body 42 is matched with the sliding cavity 10, for example, the sliding cavity 10 has a matching opening 10a at one end in a preset direction, the mover body 42 is passed through the matching opening 10a, so that a part of the mover body 42 extends into the sliding cavity 10; the mover magnet 41 is arranged on the mover body 42, and at least a part of the mover magnet 41 is located in the sliding cavity 10. When the shock absorber 100 works normally, the stator coil 31 and the mover magnet 41 move relative to each other. The mover magnet 41 cuts the magnetic lines of force, causing the shock absorber 100 to generate a corresponding damping force. The damping force of the vibration reduction system can be controlled by adjusting the current of the stator coil 31.

[0086] It can be understood that during the relative movement of the stator assembly 3 and the mover assembly 4, the mover magnet 41 can always be completely located in the sliding cavity 10, or the mover magnet 41 can switch between a position where it is completely located in the sliding cavity 10 and a position where it is partially located in the sliding cavity 10.

[0087] Of course, the first component 1 can also be a mover component 4, the second component 2 can be a stator component 3, the mover body 42 defines a sliding cavity 10, and the stator body 32 is penetrated through the matching opening 10a.

[0088] Optionally, the mover magnetic steel 41 may include a plurality of annular permanent magnets arranged in sequence along a preset direction.

[0089] The vehicle according to the second aspect of the present invention comprises the shock absorber 100 according to the first aspect of the present invention, wherein one of the stator assembly 3 and the mover assembly 4 is suitable for connection with the wheel of the vehicle, and the other is suitable for connection with the body of the vehicle.

[0090] The vehicle according to the embodiment of the utility model adopts the above-mentioned shock absorber 100, which is beneficial to improving the detection accuracy of the vehicle's own posture, facilitating the improvement of comfort, and facilitating the freeing up of a certain space for other components of the vehicle, thereby facilitating a reasonable layout.

[0091] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0092] Reference below Figure 1-Figure 5 The shock absorber 100 according to the embodiment of the utility model is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description, and is not a specific limitation to the utility model.

[0093] like Figure 1-Figure 5 As shown, the shock absorber 100 includes a stator assembly 3, a mover assembly 4 and a position detection assembly 5, and the stator assembly 3 and the mover assembly 4 are movable and matched in the up and down directions.

[0094] The stator assembly 3 includes a stator coil 31 and a stator body 32. The stator body 32 defines a sliding cavity 10, and the stator body 32 includes a cylinder 321, a first cover plate 322 and a second cover plate 323. The first cover plate 322 is arranged at the upper end of the cylinder 321, and the first cover plate 322 is formed with a matching opening 10a that passes through from top to bottom. The second cover plate 323 is arranged at the lower end of the cylinder 321, and the stator coil 31 is arranged on the inner circumferential wall of the cylinder 321; the stator assembly Component 4 includes a mover magnet 41 and a mover body 42, the mover magnet 41 is arranged in the mover body 42, and a cavity 20 is defined in the mover assembly 4, the cavity 20 includes a first chamber 20c and a second chamber 20d, the first chamber 20c is located at the lower side of the second chamber 20d, and a connecting port 20a is formed at the lower end of the first chamber 20c to connect the first chamber 20c and the sliding chamber 10, and an installation port 20b is formed at the upper end of the second chamber 20d. Among them, the cross-sectional area of ​​the first chamber 20c is larger than the cross-sectional area of ​​the second chamber 20d and the opening area of ​​the matching port 10a, the opening area of ​​the connecting port 20a is basically consistent with the cross-sectional area of ​​the first chamber 20c, and the cross-sectional areas of the first chamber 20c and the second chamber 20d are both perpendicular to the preset direction; during the relative movement of the stator assembly 3 and the mover assembly 4, the first chamber 20c is always located in the sliding cavity 10 and the second chamber 20d is penetrated through the matching port 10a, that is, the first chamber 20c is always located on the lower side of the first cover plate 322.

[0095] The stator body 32 further includes a push rod 324 . The push rod 324 is disposed on the lower side of the second cover plate 323 and is fixedly connected to the second cover plate 323 . The push rod 324 is suitable for being connected to a wheel of a vehicle.

[0096] The position detection component 5 is arranged in the cavity 20. The position detection component 5 is a laser sensor and is used to detect the position of the mover component 4 relative to the stator component 3 in the up and down directions; the position detection component 5 includes a signal transmitter 51 and a signal receiver 52. The signal transmitter 51 and the signal receiver 52 are integrated and are both arranged at the installation port 20b. A signal reflecting component 53 is provided on the inner wall of the second cover plate 323. The signal reflecting component 52 is used to reflect the laser detection signal emitted by the signal transmitter 51 toward the signal receiver 52.

[0097] The shock absorber 100 further includes a first buffer member 61, a second buffer member 62, a protective member 7, a first mounting seat 81, a second mounting seat 82 and a shock absorbing spring 83. The first buffer member 61 is fixedly arranged on the inner wall of the first cover plate 322 and is arranged around the matching opening 10a, so that the first buffer member 61 is sleeved outside the second chamber 20d. The first buffer member 61 is suitable for directly or indirectly abutting against the mover body 42 to achieve position limiting protection; the second buffer member 62 is fixedly arranged on the second mounting seat 82 and is arranged around the second chamber 20d. 0d, the second buffer 62 is located outside the sliding cavity 10 and is suitable for directly or indirectly abutting against the first cover plate 322 to achieve position limiting protection; the protective member 7 is arranged around the second buffer 62, and the two ends of the protective member 7 are respectively fixedly connected to the first mounting seat 81 and the second mounting seat 82, the first mounting seat 81 is fixedly arranged on the stator assembly 3, the second mounting seat 82 is fixedly arranged on the mover assembly 4, and the damping spring 83 is sleeved outside the protective member 7 and abutted between the first mounting seat 81 and the second mounting seat 82. Of course, the first buffer 61 can also be arranged on the mover body 42, and the second buffer 62 can also be arranged on the stator body 32.

[0098] The second mounting seat 82 includes a seat body 821, a mounting plate 822 and a bushing 823. The seat body 821 is arranged around the bushing 823. The mounting plate 822 is arranged between the seat body 821 and the bushing 823. The bushing 823 is arranged around the outer peripheral wall of the second chamber 20d. The movable body 42 is pressed onto the mounting plate 822 through the bushing 823 and the clamping nut 84.

[0099] It is understandable that when the shock absorber 100 leaves the factory or replaces parts (or the threshold value is set and directly handed over to the sensor and controller for self-learning), the initial height measurement and setting of the vehicle is completed as the initial reference position of the vehicle.

[0100] This application utilizes the hollow space inside the mover assembly 4 through a clever design, and uses a laser sensor with high measurement accuracy to make up for the various shortcomings of traditional automobile suspension sensors. It has advantages in layout space, measurement accuracy, measurement content, service life, maintenance convenience, etc. Among them, the above-mentioned settings of this application are applicable to the shock absorber 100 without a medium (such as oil, etc.) in the middle. This application only uses electromagnetic suspension (i.e. electromagnetic shock absorber) as an example to explain the working method and principle. In actual use, all electromagnetic suspensions (cylinder type, plate type, etc.) and air suspensions (air shock absorbers) with space in the middle and no reflective medium are applicable to the above-mentioned settings of this application. That is to say, the shock absorber 100 in this application is not limited to electromagnetic shock absorbers, and can also be other types of shock absorbers, such as air shock absorbers, etc.

[0101] The following briefly describes the measurement of various parameters when the shock absorber 100 is used in a vehicle:

[0102] Distance measurement: When the vehicle is moving, the signal transmitter 51 transmits a detection signal, and the detection signal passes through the connecting port 20a to the signal reflector 53 to be reflected back to the signal receiver 52. By comparing and calculating the functions, the distance from the signal reflector 53 to the integrated structure of the signal transmitter 51 and the signal receiver 52 can be obtained. By comparing the initial positions, the movement stroke (i.e., the suspension stroke) of the stator assembly 3 relative to the mover assembly 4 can be obtained. The posture of the vehicle at this time can be easily calculated through the different distance functions of the four wheels, thereby providing a reference for the active suspension (electromagnetic suspension or air suspension) to correct the vehicle posture.

[0103] Speed ​​and acceleration measurement: Since the position detection component 5 is an active measurement sensor with a high measurement frequency, the suspension height (distance) parameters can be obtained in real time. Low-frequency vibration and even the stationary state of the vehicle will not affect the measurement parameters. Therefore, the position detection component 5 can not only be used to measure the suspension stroke, but also can easily obtain the suspension movement speed (i.e. the movement speed of the stator component 3 relative to the mover component 4) through the functional relationship between the difference in suspension stroke and time. The real-time deceleration of the vehicle can be calculated by comparing the suspension movement speed with the time function again. In theory, the number of vehicle sensors can be greatly reduced to achieve the purpose of intensive design.

[0104] Measurement of vehicle load parameters in a stationary state: Since the position detection component 5 is an active measurement sensor, it can still provide good information such as the vehicle posture when the vehicle is stationary. By comparing the initial state of the vehicle, the load of different axes of the vehicle can be preliminarily calculated. The basic principle is as follows: Measure the height of the four wheels of the vehicle when the vehicle starts or is about to move. Since the vehicle has no relative motion and road impact at this time, the distance change can be regarded as the generation of load compression damping. Based on this, the empty or fully loaded state of the vehicle can be judged, so it can provide a more accurate reference basis for four-wheel control.

[0105] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0106] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0107] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0108] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0109] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that: include: A first component and a second component, one of the first component and the second component is a stator component, and the other is a mover component, a sliding cavity is defined in the first component, the second component slides and fits in the sliding cavity along a preset direction, a cavity is defined in the second component, and a connecting port is formed at one end of the second component in the preset direction to connect the cavity and the sliding cavity; A position detection component, wherein the position detection component is disposed in the sliding cavity and / or the cavity, and is used to detect the position of the mover component relative to the stator component in a preset direction, and comprises a signal transmitter and a signal receiver, wherein the signal transmitter and the signal receiver are both arranged relative to the connecting port in the preset direction, the signal transmitter is used to transmit a detection signal toward the connecting port, and the signal receiver is used to receive the detection signal transmitted by the signal transmitter.

2. The shock absorber according to claim 1, characterized in that: The signal transmitter and the signal receiver are integrated and arranged on the same side of the communication port in the preset direction, the signal transmitter and the signal receiver are both arranged in one of the first component and the second component, and the other of the first component and the second component is provided with a signal reflecting member, and the signal reflecting member is used to reflect the detection signal emitted by the signal transmitter toward the signal receiver; or, The signal transmitter and the signal receiver are separately arranged and respectively arranged on opposite sides of the communication port in the preset direction, and one of the signal transmitter and the signal receiver is arranged in the first component, and the other is arranged in the second component.

3. The shock absorber according to claim 2, characterized in that: The sliding cavity has a mating opening at one end in the preset direction, the second component is inserted into the mating opening, and when the signal transmitter and the signal receiver are integrated, the signal transmitter and the signal receiver are both arranged in the cavity, and the signal reflecting component is arranged on a side wall of the sliding cavity away from the mating opening.

4. The vibration absorber according to claim 3, characterized in that: One end of the second component away from the communicating port extends out of the sliding cavity and forms a mounting port communicating with the cavity, and the signal transmitter and the signal receiver are both arranged at the mounting port.

5. The shock absorber according to claim 3, characterized in that: The cavity includes a first chamber and a second chamber arranged in sequence along the preset direction, the connecting port is formed on a side of the first chamber away from the second chamber, and the second component is constructed so that the first chamber is always located in the sliding chamber and the second chamber is passed through the matching port, the cross-sectional area of ​​the first chamber is larger than the cross-sectional area of ​​the second chamber and the opening area of ​​the matching port, and the signal transmitter and the signal receiver are both arranged in the second chamber.

6. The shock absorber according to claim 1, characterized in that The position detection component is a laser sensor.

7. The vibration absorber according to claim 1, characterized in that: Also includes: A first buffer member, the first buffer member is fixed to the inner wall of the sliding cavity and is disposed around the second component; The second buffer is fixed to the second component and is arranged around a portion of the second component located outside the sliding cavity.

8. The shock absorber according to claim 7, characterized in that Also includes: A protective member is arranged around the second buffer member, and two ends of the protective member are respectively sealed and connected to the first component and the second component.

9. The vibration absorber according to claim 7, characterized in that: Also includes: a first mounting seat, wherein the first mounting seat is fixed to the first component; a second mounting base, wherein the second mounting base is fixed to the second component; A vibration-damping spring is sleeved outside the second buffer member and abuts between the first mounting seat and the second mounting seat.

10. The vibration absorber according to any one of claims 1 to 9, characterized in that: The first component is a stator component, and the second component is a mover component. The stator component includes a stator coil and a stator body. The stator body defines the sliding cavity. The stator coil is arranged on the inner wall of the sliding cavity. The mover component includes a mover body and a mover magnet. The mover body cooperates with the sliding cavity. The mover magnet is arranged on the mover body and is at least partially located in the sliding cavity.

11. A vehicle, characterized in that: The invention comprises a shock absorber according to any one of claims 1 to 10, wherein one of the stator assembly and the mover assembly is suitable for being connected to a wheel of the vehicle, and the other is suitable for being connected to a body of the vehicle.

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