Guider and shock absorber

Abstract

The utility model relates to the technical field of vehicle shock absorption, and provides a guider and a shock absorber, and the guider comprises a body, a guide hole and a flow channel. The guide hole is formed in the body, and a piston rod of the piston is inserted into the guide hole; a flow channel is formed in the body, and the two ends of the flow channel are communicated with oil cavities in the oil storage cylinder and the working cylinder respectively. According to the scheme, the flow channel is additionally arranged on the guider, and in the traditional design, in order to achieve circulation between a rod cavity and other oil cavities, holes are often needed to be formed in a working cylinder. However, in the tapping process, a sealing element on the piston is prone to being scratched, sealing is poor, oil liquid leakage is caused, and the performance of the shock absorber is affected. By additionally arranging the flow channel on the guider, oil can smoothly flow to the oil storage cylinder from the working cylinder, so that the requirement of opening a hole is avoided, the damage of a sealing element is effectively prevented, and the sealing performance of a system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle damping technology field, especially a guider and shock absorber. BACKGROUND

[0002] Shock absorber is used to restrain the oscillation of spring rebound and the impact from the road, and is widely used in vehicles to accelerate the damping of frame and body vibration and improve the driving smoothness of the vehicle. The guider is generally arranged in the shock absorber.

[0003] In the existing design, the high-pressure oil in the hydraulic system will overflow from the bushing of the guider to the upper end of the guider, and part of the oil will be leaked to other oil chambers through the slot. Since the amount of this part of oil is very small, the guider cannot directly realize the flow between the rod chamber and other oil chambers, thereby limiting the efficiency and function of the system. In order to solve the above problem, it is usually necessary to open a hole on the working cylinder so that the oil in the rod chamber can flow to other oil chambers. However, the opening may scratch the sealing element on the piston, causing poor sealing and eventually causing oil leakage, affecting the sealing performance and working efficiency of the system. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a guider and shock absorber to avoid scratching the piston.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a guider applied to a shock absorber, wherein the shock absorber is provided with an oil storage cylinder and a working cylinder, the working cylinder is slidably provided with a piston, and the guider comprises:

[0006] a body;

[0007] a guide hole arranged in the body and used for inserting the piston rod of the piston;

[0008] a flow channel arranged in the body and having two ends respectively communicating with the internal oil chamber of the oil storage cylinder and the working cylinder.

[0009] In an optional embodiment of the utility model, the body is of an annular structure.

[0010] In an optional embodiment of the utility model, the body comprises a first annular table and a second annular table arranged coaxially, the outer diameter of the second annular table is smaller than that of the first annular table, and the second annular table is used for inserting the working cylinder.

[0011] In an optional embodiment of this utility model, the end face of the first annular platform closer to the second annular platform is the first end face, the end face of the second annular platform away from the first annular platform is the second end face, the flow channel is a groove opened along the axial direction of the body, and the groove is open at the position corresponding to the first end face and the second end face.

[0012] In an optional embodiment of this utility model, the groove is open at the position corresponding to the outer peripheral wall of the first annular platform.

[0013] In an optional embodiment of this utility model, the groove is open at the position corresponding to the outer peripheral wall of the second annular platform.

[0014] In one optional embodiment of this utility model, multiple flow channels are provided.

[0015] In an optional embodiment of the present invention, a plurality of the flow channels are arranged at uniform intervals in the circumferential direction of the body.

[0016] In an optional embodiment of the present invention, an annular groove for embedding a sealing ring is provided on the outer peripheral wall of the body, and the sealing ring is used to form a seal between the body and the oil storage cylinder.

[0017] This utility model also proposes a vibration damper, including the aforementioned guide.

[0018] This invention proposes a guide and a vibration damper. In this solution, a flow channel is added to the guide. In traditional designs, to achieve flow between the rod chamber and other oil chambers, a hole often needs to be drilled in the working cylinder. However, the drilling process can easily scratch the sealing elements on the piston, leading to poor sealing, oil leakage, and affecting the performance of the vibration damper. By adding a flow channel to the guide, the oil can flow smoothly from the working cylinder to the reservoir, avoiding the need for a hole, thus effectively preventing damage to the sealing elements and improving the system's sealing performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the guide structure in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal oil flow direction of the shock absorber in one embodiment of the present invention;

[0022] Figure 3 This is a front view of the guide in one embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the guide in one embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Working cylinder; 2. Oil reservoir cylinder; 3. Piston; 4. Piston rod; 10. Body; 11. Guide hole; 12. Flow channel; 13. First annular platform; 14. Second annular platform; 15. First end face; 16. Second end face; 17. Annular groove. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] Shock absorbers are key components used to suppress the oscillations caused by the rebound of vehicle springs after absorbing shocks, as well as impacts from the road surface. They are widely used in the suspension systems of vehicles such as automobiles and motorcycles. Their main function is to improve the ride smoothness and comfort of a vehicle by accelerating the attenuation of vibrations between the frame and the body. In shock absorber design, hydraulic systems are the most common operating principle. Hydraulic shock absorbers typically control the movement of a piston (3) through the flow of fluid, thereby effectively absorbing vehicle vibrations.

[0028] In traditional hydraulic shock absorber designs, guides are typically installed inside the shock absorber to guide the movement of the hydraulic piston 3, ensuring its stable operation along a predetermined trajectory. However, existing hydraulic shock absorber designs have some problems, particularly regarding the hydraulic channel design of the guides. High-pressure oil in the hydraulic system overflows through the guide bushing to the upper end of the guide, and some leaks into other oil chambers through slots. The flow rate of this leaked oil is very limited, causing the guide to be unable to effectively facilitate oil flow between the rod chamber and other oil chambers. This limits the efficiency and functionality of the hydraulic system.

[0029] The main structure of a vibration damper includes the following parts:

[0030] Casing: Usually made of metal, with sufficient strength and rigidity to protect the internal hydraulic system and withstand external impacts.

[0031] Piston 3: Located inside the shock absorber, it is a key component in contact with the hydraulic fluid and is usually made of wear-resistant material. Piston 3 reciprocates within the shock absorber cavity, driving the flow of hydraulic fluid, thereby achieving vibration absorption and attenuation.

[0032] Guide: The guide is typically used to guide piston 3, ensuring stable movement of piston 3 within the damper. It helps reduce friction, improve sealing, and reduce wear during piston 3's movement.

[0033] Hydraulic cylinder: The hydraulic cylinder is divided into a working cylinder 1 and a reservoir cylinder 2. The working cylinder 1 is usually connected to the piston rod 4 and is responsible for controlling the up and down movement of the piston 3.

[0034] like Figures 1-4 As shown, this utility model proposes a guide for use in a vibration damper. The vibration damper contains an oil reservoir 2 and a working cylinder 1. A piston 3 is slidably disposed within the working cylinder 1. The guide includes a body 10, a guide hole 11, and a flow channel 12. The body 10 is the main part of the guide and is typically made of wear-resistant and corrosion-resistant metal. It supports the guide hole 11 and the flow channel 12 and is responsible for engaging with other vibration damper components (such as the piston 3, the working cylinder 1, etc.).

[0035] A guide hole 11 is formed in the body 10, and the guide hole 11 is used for the piston rod 4 of the piston 3 to be inserted. The piston rod 4 is connected to the guide through the guide hole 11, and the guide stabilizes the movement of the piston rod 4 through its structure, preventing the piston rod 4 from deviating or getting stuck during operation, thereby ensuring the smooth operation of the vibration damper.

[0036] The flow channel 12 is formed in the body 10, and its two ends are respectively connected to the oil reservoir 2 and the internal oil chamber of the working cylinder 1. The function of the flow channel 12 is to provide a flow channel for the hydraulic fluid, so that the hydraulic fluid can flow and communicate between the rod chamber (inside the working cylinder 1) and other oil chambers (such as the oil reservoir 2), and avoid the reduction in working efficiency caused by obstruction or insufficient flow of hydraulic fluid.

[0037] Traditional hydraulic dampers often guide oil flow by opening a hole in the working cylinder 1. This practice can easily scratch the sealing elements on the piston 3, leading to seal failure and oil leakage. This design, however, avoids the need for an opening in the working cylinder 1 by adding a flow channel 12 to the guide, thus effectively protecting the integrity of the piston 3's sealing elements and maintaining the system's sealing performance.

[0038] like Figures 2-4 As shown, the body 10 has a ring structure. The ring structure design of the body 10 provides good strength and stability, making it particularly suitable for components in hydraulic systems that need to withstand high pressure and dynamic loads. The ring structure effectively distributes external forces, ensuring that the guide is not easily deformed during operation, thereby improving overall durability and operational stability.

[0039] like Figures 2-4 As shown, the body 10 includes a first annular platform 13 and a second annular platform 14 arranged coaxially. The first annular platform 13 has a larger outer diameter. Its main function is to provide sufficient support force so that the guide can be firmly fixed in the other components of the shock absorber, preventing loosening during operation. The outer diameter of the second annular platform 14 is smaller than that of the first annular platform 13. The second annular platform 14 is used to insert into the working cylinder 1. The second annular platform 14 has a smaller outer diameter, specifically designed for insertion into the working cylinder 1. The size design of the second annular platform 14 can precisely match the inner wall of the working cylinder 1, allowing the guide to be firmly embedded in the working cylinder 1, providing good guidance for the piston rod 4.

[0040] like Figure 3 , 4As shown, the end face of the first annular platform 13 closest to the second annular platform 14 is the first end face 15, which is one end face of the guide body 10 and is located inside the oil reservoir 2. It is in close contact with other components of the oil reservoir 2 and is responsible for bearing the pressure and load from inside the oil reservoir 2. The end face of the second annular platform 14 furthest from the first annular platform 13 is the second end face 16, which is located on the side of the second annular platform 14 furthest from the first annular platform 13 and is located inside the working cylinder 1. It is in close contact with other components of the working cylinder 1 and bears the pressure and mechanical load from inside the working cylinder 1. The flow channel 12 is a groove opened along the axial direction of the body 10. These grooves form an open design at the contact position with the first end face 15 and the second end face 16. Through this open design, the flow channel 12 can directly connect the oil reservoir 2 and the working cylinder 1, ensuring smooth flow of oil. The open-shaped flow channel 12 corresponds to the open positions of the first end face 15 and the second end face 16. This design allows the flow channel 12 to simultaneously connect the reservoir cylinder 2 and the working cylinder 1. This means that the oil in the reservoir cylinder 2 and the working cylinder 1 can flow to each other through the flow channel 12 in the guide, thereby completing the oil exchange in the hydraulic system. The open design of the flow channel 12 connects the reservoir cylinder 2 and the working cylinder 1, realizing direct oil flow. This design greatly reduces the resistance to oil flow, ensuring that hydraulic oil can flow quickly and stably from the reservoir cylinder 2 to the working cylinder 1, or from the working cylinder 1 back to the reservoir cylinder 2. The improved flow efficiency helps the shock absorber respond more quickly to external loads and environmental changes during operation.

[0041] like Figure 3 , 4 As shown, the groove is open at the position corresponding to the outer peripheral wall of the first annular platform 13. This means that the opening of the groove is directly exposed to the outside of the first annular platform 13 and is in communication with the external environment. This open design facilitates the flow of oil from the oil reservoir 2, thereby ensuring the flow and regulation of oil within the hydraulic system.

[0042] like Figure 3 , 4 As shown, the groove is open at the position corresponding to the outer peripheral wall of the second annular platform 14. This open portion is connected to the oil flow path inside the working cylinder 1, ensuring that the oil in the working cylinder 1 and the guide can flow smoothly, realizing the oil exchange between the oil storage cylinder 2 and the working cylinder 1.

[0043] Except for the open sections mentioned above, all other parts of the groove are sealed. Specifically, the groove is a U-shaped channel, a design typically used to provide a larger flow channel area, facilitating rapid oil flow. The inner wall of the U-shaped channel effectively guides the oil flow along the channel's path, reducing flow resistance and eddies, and improving flow efficiency. The U-shaped openings of the U-shaped channel are arranged radially.

[0044] like Figure 3 , 4 As shown, multiple flow channels 12 are provided. These flow channels 12 are used to guide the flow of liquids (such as oil) in the system. Multiple flow channels 12 help to distribute the flow load of the fluid and avoid situations where the flow channels 12 are too narrow, resulting in increased flow resistance or uneven flow.

[0045] like Figure 3 , 4 As shown, the multiple flow channels 12 are evenly spaced circumferentially around the body 10. This design ensures the uniformity of liquid flow, avoiding situations where local flow channels 12 are too dense or too sparse, leading to uneven flow and potentially affecting the overall performance of the system. The circumferentially uniform arrangement helps improve the smoothness of liquid flow and the consistency of system operating conditions.

[0046] By setting multiple flow channels 12, and arranging these flow channels 12 evenly in the circumferential direction of the body 10, the flow of liquid can be made more uniform, avoiding local uneven flow or excessively fast or slow flow rates. This effectively reduces flow resistance and eddies, enhances the flow efficiency of the system, and prevents blockage or excessive flow in certain areas of the flow channels 12. The design of multiple flow channels 12 improves the stability of the hydraulic system. When one flow channel 12 becomes blocked or leaks, the other flow channels 12 can still maintain the flow and function of the system, preventing complete system failure. Therefore, this design plays an important role in improving system reliability, especially suitable for hydraulic equipment with high load, high pressure, and long-term operation. The design of multiple flow channels 12 distributes the workload within the system to a certain extent. Even if some flow channels 12 have problems, the basic functions of the system can continue to be maintained through the other flow channels 12, reducing the risk of overall system failure. In addition, the good sealing design reduces the possibility of leakage and contamination, thereby reducing the frequency of system maintenance and repair, and improving long-term operational reliability.

[0047] like Figure 3 , 4 As shown, an annular groove 17 for embedding a sealing ring is formed on the outer peripheral wall of the body 10. The sealing ring is used to form a seal between the body 10 and the oil reservoir 2. The sealing ring ensures a sealing effect between the body 10 and the oil reservoir 2, preventing liquid leakage. The design of the annular groove 17 ensures that the sealing ring can be firmly embedded and maintain a sealing effect for a longer period of time, enhancing the sealing performance of the system.

[0048] An annular groove 17 is formed on the outer peripheral wall of the body 10, and used in conjunction with a sealing ring, which can effectively prevent oil leakage. The embedded design of the sealing ring ensures the stability and long-term effectiveness of the sealing effect, enabling the system to operate for a long time under high pressure and high temperature environments without easily causing leakage problems. The design of the annular groove 17 ensures that the sealing ring can fit tightly against the outer peripheral wall of the body 10, further enhancing the sealing performance.

[0049] This utility model also proposes a vibration damper, including the aforementioned guide.

[0050] This invention proposes a guide and a vibration damper. In the above solution, a flow channel 12 is added to the guide. In traditional designs, to achieve flow between the rod chamber and other oil chambers, it is often necessary to open a hole in the working cylinder 1. However, the opening process can easily scratch the sealing elements on the piston 3, leading to poor sealing, oil leakage, and affecting the performance of the vibration damper. By adding a flow channel 12 to the guide, the oil can flow smoothly from the working cylinder 1 to the reservoir 2, avoiding the need for an opening, thus effectively preventing damage to the sealing elements and improving the system's sealing performance. The flow channel 12 provides a stable and smooth flow path for the oil, allowing the oil between the rod chamber and the reservoir 2 to flow quickly, avoiding the poor oil flow caused by an insufficiently small or improperly designed flow channel 12 in traditional designs. This not only increases the oil flow rate but also effectively reduces the damping force, improving the vibration damper's response speed and working efficiency. Traditional opening designs usually cause restricted oil flow, thereby increasing pressure loss and additional resistance in the hydraulic system. By adding flow channel 12 to the guide, the resistance to oil flow is reduced, the hydrodynamic efficiency is improved, and energy loss is reduced, thereby optimizing the overall performance of the shock absorber. Compared with traditional designs, this patented design reduces the reliance on the opening in the working cylinder 1 by optimizing the structure of the guide, thus simplifying the manufacturing process. It eliminates the need for precise control over the opening position, diameter, and wear resistance of the sealing elements, reducing manufacturing difficulty and cost. Furthermore, the implementation of this design has minimal impact on improvements to existing production processes, making it easier to promote and apply on existing production lines. Avoiding the structural damage and sealing failure that could result from openings in the working cylinder 1, the addition of flow channel 12 makes the entire hydraulic system more compact and reliable. Simultaneously, due to the absence of potential problems associated with openings, the service life and long-term stability of the shock absorber are effectively improved.

[0051] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0052] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0053] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0054] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0055] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0056] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0057] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

[0058] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0059] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A guide, characterized in that, Applied to a vibration damper, the vibration damper includes an oil reservoir and a working cylinder, with a piston slidably disposed within the working cylinder, and the guide includes: ontology; A guide hole is formed in the body, and the guide hole is used for the piston rod of the piston to be inserted; A flow channel is formed in the body, and the two ends of the flow channel are respectively connected to the oil storage cylinder and the internal oil chamber of the working cylinder.

2. A guide according to claim 1, characterized in that, The body has a ring structure.

3. A guide according to claim 2, characterized in that, The body includes a first annular platform and a second annular platform arranged coaxially. The outer diameter of the second annular platform is smaller than the outer diameter of the first annular platform. The second annular platform is used to insert the working cylinder.

4. A guide according to claim 3, characterized in that, The end face of the first annular platform closer to the second annular platform is the first end face, and the end face of the second annular platform away from the first annular platform is the second end face. The flow channel is a groove opened along the axial direction of the body, and the groove is open at the position corresponding to the first end face and the second end face.

5. A guide according to claim 4, characterized in that, The groove is open at the position corresponding to the outer peripheral wall of the first annular platform.

6. A guide according to claim 4, characterized in that, The groove is open at the position corresponding to the outer peripheral wall of the second annular platform.

7. A guide according to claim 2, characterized in that, The flow channel is provided in multiple ways.

8. A guide according to claim 7, characterized in that, The multiple flow channels are evenly spaced in the circumferential direction of the body.

9. A guide according to claim 2, characterized in that, The outer peripheral wall of the body is provided with an annular groove for embedding a sealing ring, which is used to form a seal between the body and the oil reservoir.

10. A vibration damper, characterized in that, Includes the guide as described in any one of claims 1-9.

Images