Guide mechanism, shock absorber suspension system and vehicle

Abstract

The invention provides a guide mechanism, a shock absorber, a suspension system and a vehicle, and relates to the technical field of guide mechanisms. The guide mechanism comprises a guide rod; the guide rod is suitable for being matched with a driven part of the vibration reduction device so as to guide the driven part. Wherein a ventilation channel is arranged in the guide rod, and / or a ventilation channel is arranged between the outer wall of the guide rod and the inner wall of the driven piece. The guide rod is used for guiding, and the smoothness of relative movement of the guide rod and the driven part can be improved.

Description

Technical Field

[0001] This application relates to the field of guiding mechanism technology, and in particular to a guiding mechanism, a shock absorber suspension system, and a vehicle. Background Technology

[0002] In related technologies, the guiding mechanism includes a guide rod and a follower, with the follower slidably mounted on the guide rod. However, the relative movement between the follower and the guide rod is not smooth enough. Summary of the Invention

[0003] This application provides a guiding mechanism, a shock absorber suspension system, and a vehicle that can improve the smoothness of the relative movement between the guide rod and the driven member.

[0004] Firstly, this application provides a guiding mechanism, comprising:

[0005] Guide rod;

[0006] The guide rod is adapted to cooperate with the driven component of the vibration damping device to guide the driven component;

[0007] The guide rod has a ventilation channel, and / or the outer wall of the guide rod is adapted to form a ventilation channel between itself and the inner wall of the driven member.

[0008] Optionally, one end of the guide rod is adapted to extend into the receiving cavity of the driven member to form an air cavity with the driven member, and the venting channel communicates the air cavity with the outside.

[0009] Optionally, the outer wall of the guide rod is radially concave to form a first groove that serves as the ventilation channel.

[0010] Optionally, the first groove is a straight groove in the axial direction of the guide rod.

[0011] Optionally, the first groove is a spiral groove in the axial direction of the guide rod.

[0012] Optionally, the guide rod has the ventilation channel; the ventilation channel includes:

[0013] The main channel extends axially along the guide rod to the end face of the guide rod facing the air chamber;

[0014] One end of the branch channel is connected to the end of the main channel that is away from the air chamber, and the other end passes through the guide rod.

[0015] Optionally, the number of branch channels is at least two, and the extension directions of at least two branch channels intersect.

[0016] Optionally, the branch channel extends radially along the guide rod.

[0017] Optionally, at least two of the branch channels include a first branch channel, the extension direction of which is perpendicular to the axial direction of the follower.

[0018] Optionally, at least two of the branch channels are on the same axis.

[0019] Optionally, the branch channel is located at one end of the guide rod opposite to the air chamber.

[0020] Optionally, the guide rod has a variable cross-section design.

[0021] Optionally, the guide rod has a spindle-shaped structure.

[0022] Secondly, this application provides a vibration damper, comprising:

[0023] The aforementioned guiding mechanism,

[0024] A follower, the follower being adapted to move along the axial direction of the guide mechanism under the drive of a driving force;

[0025] The guiding mechanism is adapted to cooperate with the driven member to guide the driven member.

[0026] Optionally, the vibration damper further includes: an active component;

[0027] The driving member and the driven member are connected in cooperation. Under the drive force, the driving member causes the driven member to move along the axial direction of the guide mechanism.

[0028] Optionally, the driven member is provided with a receiving cavity extending along the axial direction, and at least a portion of the guide mechanism is disposed within the receiving cavity.

[0029] Optionally, the shock absorber further includes a sliding bearing, which is sleeved on the guide mechanism, and the driven member is sleeved on the sliding bearing.

[0030] Optionally, a gap is formed between the inner wall of the sliding bearing and the outer wall of the guide mechanism, and / or, a gap is formed between the outer wall of the sliding bearing and the inner wall of the driven member.

[0031] Optionally, the inner wall of the driving member is provided with a guide rail in the axial direction, and the driven member cooperates with the guide rail to realize movement in the axial direction of the guiding mechanism.

[0032] Optionally, the guide rail is a helical guide rail extending along the axial direction of the driving member, and the axis of the helical guide rail is coaxial with the driven member.

[0033] Optionally, the number of guide rails is two, and the two guide rails form a double helix guide rail structure.

[0034] Optionally, the shock absorber further includes a base having an inner cavity, with at least a portion of the driving member disposed within the inner cavity of the base, and one end of the driving member extending out of the inner cavity away from the driven member.

[0035] Optionally, one end of the driven member is provided with an opening of the receiving cavity, and the other end of the driven member extends out of the inner cavity.

[0036] Optionally, the driving member has a mounting cavity, and at least a portion of the driven member is disposed within the mounting cavity.

[0037] Optionally, the guide mechanism is connected to the active member, and at least a portion of the guide mechanism is disposed within the mounting cavity.

[0038] Optionally, the guiding mechanism is coaxially arranged with the driving element.

[0039] Optionally, the shock absorber further includes a first sealing sleeve and a second sealing sleeve;

[0040] The first sealing sleeve is located outside the inner cavity and is sleeved on the driven member; the second sealing sleeve is located outside the inner cavity and is disposed on the end of the driving member away from the driven member (12).

[0041] Optionally, the driven member is provided with a connecting cavity and a receiving cavity for accommodating at least a portion of the guide mechanism; the receiving cavity and the connecting cavity are spaced apart inside the driven member;

[0042] The guiding mechanism, the receiving cavity, the connecting cavity, and the driven member are coaxially arranged. The opening direction of the receiving cavity is towards the direction close to the driving member, and the opening direction of the connecting cavity is opposite to the opening direction of the receiving cavity.

[0043] Thirdly, this application provides a suspension system, including the guiding mechanism provided in the first aspect of this application, or the shock absorber provided in the second aspect of this application.

[0044] Fourthly, this application provides a vehicle including the guiding mechanism provided in the first aspect of this application, or the shock absorber provided in the second aspect of this application, or the suspension system provided in the second aspect of this application.

[0045] The guiding mechanism provided in this application connects the air chamber to the outside of the driven member through a venting channel. When the guide rod and the driven member slide relative to each other, causing the volume of the air chamber to change, the air chamber can enter and exit through the venting channel. This helps to make the air pressure in the air chamber consistent with the air pressure outside the driven member, and the gas is less likely to cause significant obstruction to the relative movement between the driven member and the guide rod, thereby improving the smoothness of the relative movement between the driven member and the guide rod.

[0046] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0047] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0048] Figure 1 This is a cross-sectional view of a vibration damper in some embodiments of this application;

[0049] Figure 2 This is a cross-sectional view of the guide rod in some embodiments of this application;

[0050] Figure 3 yes Figure 2 A magnified view of a section at point D;

[0051] Figure 4 This is one of the structural schematic diagrams of the guide rod in some embodiments of this application;

[0052] Figure 5 This is the second schematic diagram of the guide rod structure in some embodiments of this application;

[0053] Figure 6 yes Figure 5 Cross-sectional view at the EE section;

[0054] Figure 7 yes Figure 5 Cross-sectional view at the middle FF section;

[0055] Figure 8 This is a cross-sectional view of the guide rod in some other embodiments of this application.

[0056] Figure label:

[0057] 1-Guiding mechanism; 11-Guiding rod; 111-First groove; 112-Ventilation channel; 1121-Main channel section; 1122-Branch channel section; 113-Connecting part; 12-Driven member; 121-Connecting cavity; 122-Matching block; 13-Sliding bearing; 2-Base; 3-Driving member; 31-Guide rail; 4-First sealing sleeve; 5-Second sealing sleeve; a-Air cavity; b-Mounting cavity; c-Inner cavity; y-Axial direction of the driven member. Detailed Implementation

[0058] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0060] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or at least two of the features. In the description of this invention, unless otherwise stated, "at least two" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0061] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "left", "right", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0062] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] Please refer to Figure 1 , Figure 2 and Figure 3This application provides a guiding mechanism 1, which includes a guide rod 11. The guide rod 11 is adapted to cooperate with the driven member 12 of the vibration damping device to guide the driven member 12, that is, the driven member 12 is slidably sleeved on the guide rod 11.

[0064] Please refer to Figure 1 , Figure 2 and Figure 3 It is understood that in the embodiments of this application, the driven member 12 and the guide rod 11 can move relative to each other, and the relative movement has a component in the axial direction of the driven member 12. In some embodiments of this application, the driven member 12 and the guide rod 11 can also rotate relative to each other about the axis of the driven member 12. Of course, in some embodiments of this application, one of the inner wall of the driven member 12 and the outer wall of the guide rod 11 may have a protruding locking block, and the other may have a recessed locking groove, with the locking block and the locking groove engaging in the circumferential direction of the driven member 12. In this way, the relative rotation of the driven member 12 and the guide rod 11 can be restricted.

[0065] Please refer to Figure 1 , Figure 2 and Figure 3 It should be explained that, in this embodiment, the axial direction y of the follower is the through direction of the central through hole of the follower 12. The shape of the cross-section of the central through hole is not limited in this embodiment; for example, it can be circular, elliptical, or polygonal.

[0066] Please refer to Figure 1 , Figure 2 and Figure 3 It should be explained that, in this embodiment, the inner wall of the follower 12 is the circumferential inner surface of the follower 12, which is also the side of the central through hole, and the outer wall of the guide rod 11 is the circumferential outer surface of the guide rod 11. It can be understood that the inner wall of the follower 12 is opposite to the outer wall of the guide rod 11.

[0067] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, at least a portion of the inner wall of the follower 12 is in a sealing fit with the guide rod 11. This means that the portion of the guide rod 11 that is in a sealing fit with the inner wall of the follower 12 is located on the outer wall of the guide rod 11, and the portions of the inner wall of the follower 12 and the outer wall of the guide rod 11 that are in a sealing fit are opposite each other. With this structural configuration, the fit between the follower 12 and the guide rod 11 is relatively tight, and the fitting accuracy is high, which is beneficial for improving guiding accuracy.

[0068] Please refer to Figure 1 , Figure 2 and Figure 3In this embodiment, at least a portion of the inner wall of the driven member 12 is in a sealing fit with the guide rod 11. This sealing fit can be direct, meaning at least a portion of the inner wall of the driven member 12 is in a sealed fit with the guide rod 11, or it can be indirect. For example, in some embodiments of this application, the guide mechanism 1 further includes a sliding bearing 13, which is sleeved on the guide rod 11. The driven member 12 is sleeved on the sliding bearing 13, and at least a portion of the inner wall of the driven member 12 can be in a sealing fit with the guide rod 11 through the sliding bearing 13. The sliding fit between the driven member 12 and the guide rod 11 through the sliding bearing 13 improves the smoothness of the relative sliding between the driven member 12 and the guide rod 11. In this embodiment, the sliding bearing 13 can be fixed to the guide rod 11 or to the driven member 12; this embodiment does not specifically limit this.

[0069] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment of the application, the first end of the follower 12 is closed, that is, one end of the central through hole of the follower 12 is closed.

[0070] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, an air cavity a is formed between the inner wall of the follower 12 and the end face of the guide rod 11. The guide rod 11 has a venting channel 112, and / or, referring to... Figure 4 , 5 A venting channel 112 is provided between the outer wall of the guide rod 11 and the inner wall of the driven member 12. The venting channel 112 is used to connect the air chamber a to the outside of the driven member 12. It is understood that during the relative movement of the driven member 12 and the guide rod 11, resulting in displacement in the axial direction y of the driven member, the volume of the air chamber a will change. By connecting the air chamber a to the outside of the driven member 12 through the venting channel 112, even when the volume of the air chamber a changes, air can enter and exit through the venting channel 112. This helps to make the air pressure in the air chamber a consistent with the outside of the driven member 12, and the gas is less likely to cause significant obstruction to the relative movement of the driven member 12 and the guide rod 11, thereby improving the smoothness of the relative movement between the driven member 12 and the guide rod 11.

[0071] Please refer to Figure 1 , Figure 2 and Figure 3 It is understood that in the embodiments of this application, an air cavity a is formed between the inner wall of the follower 12 and the end face of the guide rod 11. This means that in the axial direction y of the follower, an air cavity a is formed between the end face of the guide rod 11 near the first end of the follower 12 and the inner wall of the follower 12. The end of the guide rod 11 near the first end of the follower 12 is hereinafter referred to as the first end of the guide rod 11.

[0072] Please refer to Figure 1 , Figure 2 and Figure 3 It is understood that in this embodiment, the first end of the follower 12 is closed, and the end face of the inner cavity of the follower 12 near the first end of the follower 12 is opposite to the end face of the first end of the guide rod 11. The end of the inner cavity of the follower 12 near the first end of the follower 12 is hereinafter referred to as the first end of the inner cavity of the follower 12. During the relative movement of the follower 12 and the guide rod 11, and the relative displacement in the axial direction y of the follower, the distance between the end face of the first end of the inner cavity of the follower 12 and the end face of the first end of the guide rod 11 will change, causing the volume of the air cavity a to change. For example, if the distance between the end face of the first end of the inner cavity of the follower 12 and the end face of the first end of the guide rod 11 decreases, the volume of the air cavity a decreases, and the gas in the air cavity a is discharged to the outside of the follower 12 through the venting channel 112, making it less likely that the gas in the air cavity a will significantly hinder the relative sliding of the follower 12 and the guide rod 11.

[0073] Please refer to Figure 1 , Figure 2 and Figure 3 It is understood that in the embodiments of this application, the ventilation channel 112 may only exist in the guide rod 11, or it may only exist between the outer wall of the guide rod 11 and the inner wall of the driven member 12, or it may exist in both the guide rod 11 and the outer wall of the guide rod 11 and the inner wall of the driven member 12. The ventilation channel 112 in the guide rod 11 is hereinafter referred to as the first ventilation channel 112, and the ventilation channel 112 between the outer wall of the guide rod 11 and the inner wall of the driven member 12 is hereinafter referred to as the second ventilation channel 112. In some embodiments of this application, the first ventilation channel 112 and the second ventilation channel 112 may independently connect the air chamber a to the outside of the driven member 12. In some embodiments of this application, the first ventilation channel 112 and the second ventilation channel 112 may be connected end-to-end to jointly connect the air chamber a to the outside of the driven member 12.

[0074] Please refer to Figure 1 , Figure 2 and Figure 3 It is understood that in this embodiment of the application, the first ventilation channel is a ventilation hole formed on the guide rod 11, and the ventilation hole connects the inside and outside of the driven member 12.

[0075] Please refer to Figure 1 , Figure 4 and Figure 5 It is understood that in this embodiment of the application, the part of the outer wall of the guide rod 11 that is sealed and fitted with the driven member 12 is different from the part of the outer wall of the guide rod 11 that is used to form the second ventilation channel 112.

[0076] Please refer to Figure 1 , Figure 2 and Figure 3 Exemplary, in some embodiments of this application, one end of the vent hole penetrates the end face of the first end of the guide rod 11 to communicate with the air chamber a, and the other end of the vent hole extends to the outside of the follower 12 through the first opening of the second end of the follower 12 to communicate with the outside of the follower 12. The first end and the second end of the follower 12 are opposite ends of the follower 12 in the axial direction. In this way, the first venting channel 112 independently communicates the air chamber a with the outside of the follower 12.

[0077] Please refer to Figure 1 , Figure 4 and Figure 5 For example, in some embodiments of this application, one end of the second venting channel 112 extends to the end face of the first end of the guide rod 11 to communicate with the air chamber a, and the other end extends to the first opening of the second end of the follower 12 to communicate with the outside of the follower 12. In this way, the second venting channel 112 independently communicates the air chamber a with the outside of the follower 12.

[0078] Please refer to Figure 1 , Figure 2 and Figure 3 For example, in some embodiments of this application, one end of the vent hole penetrates the end face of the first end of the guide rod 11 to communicate with the air cavity a, and the other end of the vent hole is connected to one end of the second vent channel 112. The other end of the second vent channel extends to the first opening at the second end of the driven member 12 to communicate with the outside of the driven member 12. In this way, the first vent channel 112 and the second vent channel 112 are connected end to end to jointly connect the air cavity a with the outside of the driven member 12.

[0079] Please refer to Figure 1 , Figure 2 and Figure 3 For example, in some embodiments of this application, there are two first ventilation channels 112 and one second ventilation channel 112. The two ends of the second ventilation channel 112 are respectively connected to the two first ventilation channels 112 so that the second ventilation channel 112 and the two first ventilation channels 112 together connect the air cavity a to the outside of the driven member 12.

[0080] Please refer to Figure 1 , Figure 4 and Figure 5In some embodiments of this application, a gap is formed between the inner wall of the sliding bearing 13 and the outer wall of the guide rod 11, and / or a gap is formed between the inner walls of the outer wall of the sliding bearing 13 and the follower 12, to form a ventilation channel. With this structure, the gap between the guide rod 11 and / or the follower 12 and the sliding bearing 13 forms a ventilation channel. This ventilation channel is relatively easy to implement and does not require significant changes to the structure of the sliding bearing 13, while still meeting the ventilation requirements.

[0081] Please refer to Figure 1 One end of the guide rod 11 is adapted to extend into the receiving cavity of the follower 12 to form an air cavity a with the follower 12, and the venting channel 112 connects the air cavity a with the outside.

[0082] In this embodiment, the driven member 12 has a receiving cavity with its opening facing the guide rod 11. The size of the receiving cavity matches the size of the guide rod 11, allowing one end of the guide rod 11 to extend into the receiving cavity of the driven member 12. This forms a connection between the driven member 12 and one end of the guide rod 11 through the receiving cavity, enabling relative movement between the driven member 12 and the guide rod 11. During this relative movement, resulting in displacement along the axial direction y of the driven member 12, the volume of the air cavity a changes. By connecting the air cavity a to the outside of the driven member 12 via the venting channel 112, the air cavity a can still receive and release air through the venting channel 112 when its volume changes. This helps to ensure that the air pressure in the air cavity a is consistent with the outside air pressure of the driven member 12, making it less likely for the gas to significantly impede the relative movement between the driven member 12 and the guide rod 11, thereby improving the smoothness of the relative movement between the driven member 12 and the guide rod 11.

[0083] Please refer to Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments of this application, the outer wall of the guide rod 11 is radially concave to form a first groove 111.

[0084] The first groove 11 provides a ventilation channel 112 between the outer wall of the guide rod 11 and the inner wall of the driven member 12; and / or, the inner wall of the driven member 12 is radially concave to form a second groove, providing a ventilation channel 112 between the outer wall of the guide rod 11 and the inner wall of the driven member 12. With this structure, by forming the first groove 111 on the outer wall of the guide rod 11, the distance between the outer wall of the guide rod 11 and the inner wall of the driven member 12 at the first groove 111 is relatively large, thus providing a ventilation channel 112 between the outer wall of the guide rod 11 and the inner wall of the driven member 12, making the manufacturing of the ventilation channel 112 easier. Similarly, by forming the second groove on the inner wall of the driven member 12, the distance between the outer wall of the guide rod 11 and the inner wall of the driven member 12 at the second groove is relatively large, also providing a ventilation channel 112 between the outer wall of the guide rod 11 and the inner wall of the driven member 12, making the manufacturing of the ventilation channel 112 easier.

[0085] Please refer to Figure 4 For example, in some embodiments of this application, the first groove 111 is a spiral groove in the axial direction of the guide rod 11.

[0086] against Figure 4 The upper end of the guide rod 11 has a threaded connecting part 113, which is used to connect with the cylindrical cam via a thread. The lower part of the guide rod 11 is a slender cylindrical shape with a spiral first groove 111 on its surface. This spiral first groove 111 starts from the bottom of the guide rod 11 and extends beyond the upper limit position of the follower 12. The cylindrical surface of the spiral first groove 111 on the guide rod 11 can be clearance-fitted with the sliding bearing 13, while the follower 12 is interference-fitted with the sliding bearing 13. In the working state, the spiral first groove 111 on the surface of the guide rod 11 connects the receiving cavity of the follower 12 with the external space, providing ventilation and reducing the movement resistance of the follower 12. In addition, the spiral first groove 111 also reduces the contact area between the guide rod and the sliding bearing, thereby reducing frictional heat generation.

[0087] Please refer to Figure 5 , 6 7. Exemplarily, in some embodiments of this application, the first groove 111 is a straight groove in the axial direction of the guide rod 11.

[0088] against Figure 5 , 6 7. A first groove 111 extending axially in a straight line has a linear extension on the outer surface of the guide rod 11. The first groove 111 starts from the bottom of the guide rod 11 and terminates above the upper limit position of the follower 12. The first groove 111 connects the receiving cavity of the follower 12 and the external space of the guide rod 11, thereby reducing the motion resistance of the follower caused by pressure difference. Compared to Figure 4 plan, Figure 5 The solution avoids the potential impact between the sliding bearing and the edge of the spiral first groove during operation.

[0089] Please refer to Figure 1 , Figure 4 and Figure 5 Of course, in some embodiments of this application, the first groove 111 and the second groove may not be provided. Exemplarily, in some embodiments of this application, the cross-section of the guide rod 11 is circular, and the inner contour of the follower 12, i.e., the inner contour of the central through hole, is elliptical, so that the outer wall of the guide rod 11 and the inner wall of the follower 12 form a second channel.

[0090] Please refer to Figure 1 and Figure 4 In some embodiments of this application, at least one of the first groove 111 and the second groove is a helical groove, and the axis of the helical groove is parallel to the axial direction y of the follower. The fact that at least one of the first groove 111 and the second groove is a helical groove can significantly reduce the contact area between the inner wall of the follower 12 and the outer wall of the guide rod 11, which is beneficial for reducing frictional heat generation.

[0091] Please refer to Figure 5 , Figure 6 and Figure 7 In some embodiments of this application, at least one of the first groove 111 and the second groove is a helical groove extending along the axial direction y of the follower 12. At least one of the first groove 111 and the second groove extends to the end face of the guide rod 11 and communicates with the air cavity a. This structural configuration, where at least one of the first groove 111 and the second groove is a helical groove extending along the axial direction y of the follower 12, facilitates the manufacturing of the first groove 111 and the second groove, and reduces the obstruction encountered during the relative sliding process between the inner wall of the follower 12 and the outer wall of the guide rod 11.

[0092] Please refer to Figure 1 , Figure 2 and Figure 3In some embodiments of this application, the guide rod 11 has a ventilation channel 112; the ventilation channel 112 includes a main channel portion 1121 and a branch channel portion 1122. The main channel portion 1121 extends axially along the guide rod 11 to the end face of the guide rod 11 facing the air cavity a, and one end of the main channel portion 1121 communicates with the air cavity a; one end of the branch channel portion 1122 communicates with the end of the main channel portion 1121 away from the air cavity (a), and the other end passes through the guide rod 11 to communicate with the outside of the driven member 12; the number of branch channel portions 1122 is at least two, and the extension directions of the at least two branch channel portions 1122 intersect. With this structural configuration, by providing at least two branch channel portions 1122, the airflow rate within the ventilation channel 112 can be increased, which is beneficial for improving the smoothness of the relative movement between the guide rod 11 and the driven member 12.

[0093] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the branch channel 1122 extends radially along the guide rod 11, and one end of the main channel 1121 penetrates the end face of the first end of the guide rod 11 to communicate with the cavity. This makes the structure of the ventilation channel 112 simpler and easier to manufacture.

[0094] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, at least two branch channels 1122 include a first branch channel 1122, the extension direction of which is perpendicular to the axial direction y of the driven member 12. With this structure, the extension direction of the first branch channel 1122 is approximately perpendicular to the main channel 1121, which facilitates the processing and manufacturing of the ventilation channel 112.

[0095] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, at least two branch channel portions 1122 are located on the same axis. With this structure, the two branch channel portions 1122 can be formed in one process, facilitating the manufacturing of the ventilation channel 112. During processing, the guide rod 11 can be drilled along a direction intersecting the axial direction y of the driven member, forming a through hole on the guide rod 11, and the middle part of the through hole communicates with the main channel portion 1121. Thus, it can be understood that, in the extension direction of the through hole, the portions of the through hole located on both sides of the main channel portion 1121 are respectively the two branch channel portions 1122.

[0096] Please refer to Figure 1 In this embodiment of the application, the branch channel 1122 is located at the end of the guide rod 11 that is away from the air chamber a.

[0097] In this embodiment, one end of the guide rod 11 may be connected to a connecting portion 113, and a branch channel portion 1122 may be located on the end of the guide rod 11 facing the connecting portion 113, that is, the branch channel portion 1122 is located on the end face of the guide rod 11 away from the gas chamber a, and the branch channel portion 1122 is connected to the main channel portion 1121. The connection between the branch channel portion 1122 and the main channel portion 1121 can form a vertical (axial direction of the guide rod 11) gas delivery direction formed by the main channel portion 1121 and a horizontal (perpendicular to the axial direction of the guide rod 11) gas delivery direction formed by the branch channel portion 1122. When the ventilator 112 is venting, the gas can enter the main channel 1121 from the air chamber a and move vertically until it moves to the position of the branch channel 1122 along the main channel 1121, and then be dispersed laterally from the branch channel 1122. When the ventilator 112 is venting, the gas can enter the branch channel 1122 from the outside and move laterally until it moves to the position of the main channel 1121 along the branch channel 1122, and then be vertically transmitted to the air chamber a from the main channel 1121.

[0098] Please refer to Figure 8 In this embodiment, the guide rod (11) has a variable cross-section design. Furthermore, the guide rod (11) has a spindle-shaped structure.

[0099] Specifically, regarding such as Figure 8 The cross-section of the guide rod 11 shown indicates that the guide rod 11 can be a variable cross-section design. Furthermore, the guide rod 11 can be further designed as a spindle shape. Specifically, along the direction from the connecting part 113 to the sliding bearing 13, the cross-sectional width of the guide rod 11 increases sequentially; along the direction from the sliding bearing 13 to the end of the guide rod 11 away from the connecting part 113, the cross-sectional width of the guide rod 11 decreases sequentially. Based on the variable cross-sectional width of the guide rod 11, a spindle shape with narrow ends and a wide middle is formed. This structural design can be understood as moving the air passage from the inside of the guide rod 11 to the outside of the guide rod 11. The guide rod 11 is a spindle-shaped structure with a small diameter at both ends and a large diameter in the middle.

[0100] When guide rod 11 is in Figure 8 In the indicated state, the guide rod 11, sliding bearing 13, and driven member 12 are in a tight fit, preventing airflow. When the driven member 12 moves to its upper or lower limit position, the sliding bearing 13 and the driven member 12 remain in an interference fit. However, because the guide rod 11 has a spindle-shaped structure with the upper and lower shaft diameters smaller than the middle shaft diameter, there is a large gap between the sliding bearing 13 and the guide rod 11, allowing the originally sealed air chamber of the driven member 12 to connect with the outside. Therefore, the guide rod 11 effectively forms a ventilation channel on its entire outer surface, providing both guidance and ventilation. This design allows airflow through the entire outer surface of the spindle-shaped structure, resulting in strong ventilation.

[0101] Please refer to Figure 1 , Figure 2 and Figure 3 This application also provides a suspension system, which includes a guide mechanism 1 or a shock absorber. The suspension system is a general term for all force transmission connection devices between the vehicle frame and the axle or wheels. Its function is to transmit the forces and torques acting between the wheels and the frame, and to buffer the impact forces transmitted from uneven road surfaces to the frame or body, and to dampen the vibrations caused thereby, so as to ensure smooth vehicle driving.

[0102] Please refer to Figure 1 , Figure 2 and Figure 3 The shock absorber of this application embodiment includes a guide mechanism 1 and a follower 12. The follower 12 is adapted to move along the axial direction of the guide mechanism under the drive of a driving force. The guide mechanism 1 is adapted to cooperate with the follower 12 to guide the follower 12. The shock absorber provided in this application embodiment includes the guide mechanism 1 provided in this application embodiment, wherein the relative movement between the follower 12 and the guide rod 11 of the guide mechanism 1 is relatively smooth, so that the shock absorber can change the distance between the vehicle body and the wheel relatively quickly, which is beneficial to improving the shock absorption effect.

[0103] Furthermore, the shock absorber also includes: an active component 3, which is connected to the driven component 12. Under the drive force, the active component 3 causes the driven component 12 to move along the axial direction of the guide mechanism 1.

[0104] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, the driven member 12 is used for indirect connection with the wheel, such as through a fork arm. The base 2 of the shock absorber is used for connection with the vehicle body. The driven member 12 and the guide rod 11 can move relative to each other, thereby changing the distance between the wheel and the vehicle body in the axial direction of the driven member 12, thus achieving the effect of vibration reduction. When the vehicle encounters a pothole, the guide rod 11 extends outward from the driven member 12, increasing the distance between the wheel and the vehicle body. When the vehicle encounters a bump, the guide rod 11 retracts inward from the driven member 12, decreasing the distance between the wheel and the vehicle body.

[0105] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the follower 12 also forms a connecting cavity 121, which is coaxial with the follower 12. The connecting cavity 121 has an internal thread, and the follower 12 is fixedly connected to the fork arm through the internal thread on the inner wall of the connecting cavity 121. In this way, the vibration damper is more stable to install, easier to implement, and has a lower cost.

[0106] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the follower 12 is provided with an axially extending receiving cavity, and at least part of the guide mechanism 1 is disposed in the receiving cavity.

[0107] In this embodiment, the follower 12 has a receiving cavity with an opening facing the guide rod 11. The size of the receiving cavity matches the size of the guide rod 11, so that one end of the guide rod 11 can extend into the receiving cavity of the follower 12, forming a connection relationship between the follower 12 and one end of the guide rod 11 through the receiving cavity, so that the follower 12 and the guide rod 11 can form relative movement.

[0108] Please refer to Figure 1 The shock absorber also includes a sliding bearing 13, which is sleeved on the guide mechanism, and the driven member 12 is sleeved on the sliding bearing 13.

[0109] In this embodiment, the sliding bearing 13 can be sleeved on the guide rod 11, and the driven member 12 can be sleeved on the sliding bearing 13. At least a portion of the inner wall of the driven member 12 can be sealed to the guide rod 11 through the sliding bearing 13. The sliding engagement between the driven member 12 and the guide rod 11 via the sliding bearing 13 improves the smoothness of the relative sliding between the driven member 12 and the guide rod 11. In this embodiment, the sliding bearing 13 can be fixed to either the guide rod 11 or the driven member 12.

[0110] Please refer to Figure 1 , Figure 4 and Figure 5 According to claim 12, the damper is characterized in that a gap is formed between the inner wall of the sliding bearing 13 and the outer wall of the guide mechanism, and / or a gap is formed between the outer wall of the sliding bearing 13 and the inner wall of the driven member 12 to form a ventilation channel 112.

[0111] Please refer to Figure 1 , Figure 4 , Figure 5 and Figure 7 In some embodiments of this application, a gap is formed between the inner wall of the sliding bearing 13 and the outer wall of the guide rod 11, and / or a gap is formed between the outer wall of the sliding bearing 13 and the inner wall of the driven member 12, so as to form a ventilation channel. With this structural configuration, the gap between the guide rod 11 and / or the driven member 12 and the sliding bearing 13 forms a ventilation channel. The implementation of the ventilation channel is relatively convenient, requiring no major changes to the structure of the sliding bearing 13, and can still meet the ventilation requirements.

[0112] Please refer to Figure 1The driving member 3 forms a mounting cavity b, and at least part of the driven member 12 is disposed within the mounting cavity b. A guide rail 31 is provided on the inner wall of the driving member 3 along the axial direction. The driven member 12 and the guide rail 31 cooperate to realize movement along the axial direction of the guiding mechanism 1. The guiding mechanism is coaxially arranged with the driving member 3.

[0113] The guide rail 31 is a helical guide rail extending along the axial direction of the driving member 3, and the axis of the helical guide rail is coaxial with that of the driven member 12. There are two guide rails 31, and the two guide rails 31 form a double helical guide rail structure.

[0114] In this embodiment, the driving member 3 forms a mounting cavity b, and at least part of the driven member 12 and the guide rod 11 of the guiding mechanism 1 are disposed in the mounting cavity b of the driving member 3. The outer wall of the driven member 12 is helically engaged with the inner wall of the mounting cavity b. Specifically, the inner wall of the driving member 3 may be provided with a guide rail 31 along the axial direction. The driven member 12 can move along the axial direction of the guiding mechanism 1 by engaging with the guide rail 31 through a mating block 122. That is, during the rotation of the driving member 3, the mating block 122 is driven to move in the guide rail 31, thereby driving the driven member 12 to engage with the guide rod 11 to guide the driven member 12. With this structure, the driving member 3 is driven to rotate by a driving device such as a motor, so that the driven member 12 slides relative to the guide rod 11. The structure is relatively simple and convenient to implement and install.

[0115] Furthermore, the driven member 12 is helically engaged with the inner wall of the mounting cavity b of the driving member 3 via the mating block 122. This structural configuration allows the mounting cavity b to protect the portion where the driven member 12 and the guide rod 11 interact, thus improving the reliability of the vibration damper. Specifically, a guide rail 31 is formed on the inner surface of the mounting cavity b; the guide rail 31 is a helical guide rail, and the outer wall of the driven member 12 protrudes to form the mating block 122. The helical engagement between the guide rail 31 and the mating block 122 facilitates manufacturing. Additionally, there are two guide rails 31, forming a double-helical guide rail structure, which improves the stability and smoothness of the engagement process between the driven member 12 and the guide rail 31 of the driving member 3 via the mating block 122.

[0116] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the shock absorber further includes a base 2, the base 2 having an inner cavity c, at least a portion of the driving member 3 being disposed within the inner cavity c of the base 2, and the end of the driving member 3 opposite to the driven member 12 extending out of the inner cavity c.

[0117] The base 2 acts as the outer shell of the shock absorber, protecting the internal components such as the driving element 3, driven element 12, and guide rod 1. At least part of the driving element 3 is housed within the inner cavity c, and one end of the driven element 12, facing away from the inner cavity c, extends out of the inner cavity c. One end of the driven element 12 has an opening for receiving the cavity, and the other end of the driven element 12 extends out of the inner cavity c.

[0118] The shock absorber also includes a first sealing sleeve 4 and a second sealing sleeve 5; the first sealing sleeve 4 is located outside the inner cavity c and is sleeved on the driven member 12; the second sealing sleeve 5 is located outside the inner cavity c and is disposed on the end of the driving member 3 away from the driven member (12).

[0119] Specifically, the inner cavity c has a first opening, the axis of which is the same as the axis of the driven member 12. The driven member 12 and the guide rod 11 are disposed within the inner cavity c, and at least part of the driving member 3 is disposed within the inner cavity c. The end of the driven member 12 facing away from the guide rod 11 extends out of the inner cavity c through the first opening, and a first sealing sleeve 4 is provided at the position corresponding to the first opening at the end of the driven member 12 facing away from the guide rod 11 to achieve a sealing fit with the first opening. With this structural form, the part of the driven member 12 that mates with the guide rod 11 can be well protected by the inner cavity c, and impurities in the environment are not easily allowed to enter the interior of the driven member 12, which is beneficial to improving the reliability of the vibration damper. The first sealing sleeve 4 is beneficial to improving the sealing effect of the inner cavity c.

[0120] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the base 12 of the shock absorber further includes a second opening. The axial direction of the second opening is the same as the axial direction of the driven member 12. One end of the driving member 3 is disposed in the inner cavity c, and the other end extends out of the inner cavity c through the second opening to connect with a driving device such as a motor. The other end of the driving member 3 and the corresponding position of the second opening are sealed together by a second sealing sleeve 5. With this structure, the part of the driving member 3 that cooperates with the guide mechanism 1 can be better protected by the inner cavity c, and impurities in the environment are not easily allowed to enter the interior of the driving member 3, which is beneficial to improving the reliability of the shock absorber. The second sealing sleeve 5 can further improve the sealing effect of the inner cavity c.

[0121] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the inner cavity c can be filled with lubricating fluid, which can lubricate the part where the follower 12 and the guide rod 11 cooperate, thereby reducing friction.

[0122] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 In some embodiments of this application, one of the guide rod 11 and the driven member 12 has a connecting portion 113 with an external thread. The external thread is coaxial with the driven member 12, and the mounting cavity b has an internal thread. The external thread and the internal thread engage to fix one of the guide rod 11 and the driven member 12 to the driving member 3. In this way, the connection between one of the guide rod 11 and the driven member 12 and the driving member 3 is more reliable, easier to implement, and lower in cost.

[0123] Please refer to Figure 1 The driven member 12 is provided with a connecting cavity 121 and a receiving cavity for accommodating at least part of the guide mechanism; the receiving cavity and the connecting cavity 121 are spaced apart inside the driven member; the guide mechanism, the receiving cavity, the connecting cavity 121 are coaxially arranged with the driven member 12, the opening direction of the receiving cavity is towards the direction close to the driving member 3, and the opening direction of the connecting cavity 121 is opposite to the opening direction of the receiving cavity.

[0124] In this embodiment, a receiving cavity is provided within the driven member 12 to accommodate at least a portion of the guide rod 11, thereby creating relative movement between the driven member 12 and the guide rod 11. An air chamber a is formed within the receiving cavity, excluding the portion containing the guide rod 11. A connecting cavity 121 may also be provided within the driven member 12, spaced apart from the receiving cavity. The opening direction of the connecting cavity 121 is opposite to that of the receiving cavity. The inner wall of the connecting cavity 121 has internal threads, and the driven member 12 is fixedly connected to the fork arm via these internal threads. This results in a more stable installation of the shock absorber, easier implementation, and lower cost.

[0125] Specifically, refer to Figure 1 Within the base 2, the guide rod 11, the follower 12, the receiving cavity of the follower 12, and the connecting cavity 121 of the follower 12 are all coaxially arranged.

[0126] This application embodiment also provides a vehicle, which includes the aforementioned guiding mechanism 1, the aforementioned shock absorber, or the aforementioned suspension system. The vehicle can be implemented in various forms; for example, it can be a sedan, an off-road vehicle, or a sport utility vehicle (SUV), etc.

[0127] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or at least two embodiments or examples.

[0128] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A guiding mechanism, characterized in that, include: Guide rod (11); The guide rod (11) is adapted to cooperate with the driven member (12) of the vibration damping device to guide the driven member (12); The guide rod (11) has a ventilation channel (112), and / or the outer wall of the guide rod (11) is adapted to form a ventilation channel (112) between itself and the inner wall of the follower (12).

2. The guiding mechanism according to claim 1, characterized in that, One end of the guide rod (11) is adapted to extend into the receiving cavity of the follower (12) to form an air cavity (a) with the follower (12), and the venting channel (112) connects the air cavity (a) to the outside.

3. The guiding mechanism according to claim 1, characterized in that, The outer wall of the guide rod (11) is radially concave, forming a first groove (111) that serves as the ventilation channel.

4. The guiding mechanism according to claim 3, characterized in that, The first groove (111) is a straight groove in the axial direction of the guide rod (11).

5. The guiding mechanism according to claim 3, characterized in that, The first groove (111) is a spiral groove in the axial direction of the guide rod (11).

6. The guiding mechanism according to claim 2, characterized in that, The guide rod (11) has the ventilation channel (112); the ventilation channel (112) includes: The main channel portion (1121) extends along the axial direction of the guide rod (11) to the end face of the guide rod (11) facing the air chamber (a); The branch channel (1122) has one end connected to the end of the main channel (1121) that is away from the air chamber (a), and the other end passes through the guide rod (11).

7. The guiding mechanism according to claim 6, characterized in that, The number of the branch channel portions (1122) is at least two, and the extension directions of at least two of the branch channel portions (1122) intersect.

8. The guiding mechanism according to claim 7, characterized in that, The branch channel (1122) extends radially along the guide rod (11).

9. The guiding mechanism according to claim 7, characterized in that, The first branch channel (1122) is included among the at least two branch channel portions (1122), and the extension direction of the first branch channel portion (1122) is perpendicular to the axial direction of the follower (12).

10. The guiding mechanism according to claim 7, characterized in that, At least two of the branch channels (1122) are on the same axis.

11. The guiding mechanism according to claim 6, characterized in that, The branch channel (1122) is located at one end of the guide rod (11) away from the air chamber (a).

12. The guiding mechanism according to claim 1, characterized in that, The guide rod (11) has a variable cross-section design.

13. The guiding mechanism according to claim 12, characterized in that, The guide rod (11) has a spindle-shaped structure.

14. A vibration damper, characterized in that, include: The guiding mechanism according to any one of claims 1 to 11, Follower (12), the follower (12) being adapted to move along the axial direction of the guide mechanism under the drive of a driving force; The guiding mechanism is adapted to cooperate with the driven member (12) to guide the driven member (12).

15. The vibration damper according to claim 14, characterized in that, The vibration damper also includes: an active component (3); The active member (3) is connected to the driven member (12). Under the drive force, the active member (3) causes the driven member (12) to move along the axial direction of the guide mechanism.

16. The vibration damper according to claim 14, characterized in that, The driven member (12) is provided with an axially extending receiving cavity, and at least part of the guide mechanism is disposed in the receiving cavity.

17. The vibration damper according to claim 14, characterized in that, The damper also includes a sliding bearing (13), which is sleeved on the guide mechanism, and the driven member (12) is sleeved on the sliding bearing (13).

18. The vibration damper according to claim 17, characterized in that, A gap is formed between the inner wall of the sliding bearing (13) and the outer wall of the guide mechanism, and / or a gap is formed between the outer wall of the sliding bearing (13) and the inner wall of the follower (12).

19. The vibration damper according to claim 15, characterized in that, The inner wall of the active member (3) is provided with a guide rail (31) along the axial direction. The driven member (12) and the guide rail (31) cooperate to realize movement along the axial direction of the guiding mechanism.

20. The vibration damper according to claim 19, characterized in that, The guide rail (31) is a helical guide rail extending along the axial direction of the driving member (3), and the axis of the helical guide rail is coaxial with the driven member (12).

21. The vibration damper according to claim 19, characterized in that, The number of guide rails (31) is two, and the two guide rails (31) form a double helix guide rail structure.

22. The vibration damper according to claim 15, characterized in that, The damper also includes a base (2) having an inner cavity (c), at least a portion of the driving member (3) being disposed within the inner cavity (c) of the base (2), with one end of the driving member (3) extending out of the inner cavity (c) away from the driven member (12).

23. The vibration damper according to claim 22, characterized in that, One end of the follower (12) is provided with an opening of the receiving cavity, and the other end of the follower (12) extends out of the inner cavity (c).

24. The vibration damper according to claim 15, characterized in that, The driving member (3) has a mounting cavity (b), and at least part of the driven member (12) is disposed in the mounting cavity (b).

25. The vibration damper according to claim 24, characterized in that, The guiding mechanism is connected to the active member (3), and at least a portion of the guiding mechanism is disposed within the mounting cavity (b).

26. The vibration damper according to claim 25, characterized in that, The guiding mechanism is coaxially arranged with the active component (3).

27. The vibration damper according to claim 22, characterized in that, The vibration damper also includes a first sealing sleeve (4) and a second sealing sleeve (5); The first sealing sleeve (4) is located outside the inner cavity (c) and is sleeved on the driven member (12); the second sealing sleeve (5) is located outside the inner cavity (c) and is disposed on the end of the driving member (3) away from the driven member (12).

28. The vibration damper according to claim 15, characterized in that, The driven member (12) is provided with a connecting cavity (121) and a receiving cavity for accommodating at least a portion of the guide mechanism; the receiving cavity and the connecting cavity (121) are spaced apart inside the driven member; The guiding mechanism, the receiving cavity, the connecting cavity (121) and the driven member (12) are coaxially arranged. The opening direction of the receiving cavity is towards the direction close to the driving member (3), and the opening direction of the connecting cavity (121) is opposite to the opening direction of the receiving cavity.

29. A suspension system, characterized in that, It includes the guiding mechanism according to any one of claims 1 to 14, or the vibration damper according to any one of claims 15 to 28.

30. A vehicle, characterized in that, It includes the guiding mechanism according to any one of claims 1 to 14, or the shock absorber according to any one of claims 15 to 28, or the suspension system according to claim 29.

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