Low-wear guide structure for a piston rod of a motor vehicle shock absorber

Abstract

The utility model relates to the technical field of automobile shock absorber, and disclose a kind of low abrasion guiding structure of automobile shock absorber piston rod, the structure includes first shell, second shell and piston rod, first, second shell and piston rod surface are equipped with wear-resistant mechanism, shell surface is equipped with external dustproof mechanism, in wear-resistant mechanism, first wear-resistant ring and second wear-resistant ring can reduce the friction of piston rod and shell, first elastic object and second elastic object can buffer shock impact, sealing ring prevents hydraulic oil leakage, oil injection valve, oil drain hole can supplement or replace hydraulic oil, exhaust valve, exhaust hole can discharge internal gas, the telescopic dust cover of external dustproof mechanism can prevent dust, silt and other impurities from entering, its telescopic design synchronous deformation with piston rod movement, do not affect shock absorber work, the structure can prolong the service life of piston rod, reduce wear and tear, oil leakage, reduce maintenance cost, ensure shock absorber stable operation.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber technology, specifically a low-wear guide structure for an automotive shock absorber piston rod. Background Technology

[0002] In automotive shock absorbers, the piston rod guide structure is extremely critical. Traditional guide structures, due to direct contact and friction with the piston rod during its reciprocating motion, easily cause piston rod wear, shortening its service life. During vehicle operation, frequent vibrations and impacts exacerbate wear, affecting shock absorber performance and reliability, and may even lead to problems such as oil leaks, increasing maintenance costs. Therefore, the development of a low-wear guide structure is urgently needed.

[0003] The existing device has the following disadvantages: the piston rod is prone to wear due to direct friction with the housing, resulting in a short service life; the lack of elastic material to buffer vibration and impact exacerbates wear; the absence of sealing rings easily leads to hydraulic oil leakage, affecting shock absorption performance; the inability to regularly replenish or replace hydraulic oil results in poor lubrication; internal gas cannot be discharged, easily causing cavitation wear, unstable operation of the mechanism, and high maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a low-wear guide structure for the piston rod of an automotive shock absorber, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-wear guide structure for a piston rod of an automotive shock absorber, comprising a first housing, a second housing at the bottom of the first housing, a piston rod installed inside the first and second housings, wear-resistant mechanisms on the surfaces of the first housing, the second housing, and the piston rod, and external dustproof mechanisms on the surfaces of the first and second housings.

[0006] The wear-resistant mechanism includes a sealing ring installed at the bottom of the inside of the first housing. A first wear-resistant ring is installed at the bottom of the inside of the first housing. A piston block is installed at the bottom of the piston rod. A first elastic element is fixedly connected to the bottom of the piston block. A second elastic element is installed at the bottom of the inside of the second housing. A second wear-resistant ring is sleeved on the surface of the piston block. An oil injection valve is installed at the top left end of the first housing. An exhaust valve is installed at the top right end of the first housing. An oil drain hole is opened at the top left end of the second housing. An exhaust hole is opened at the top right end of the second housing.

[0007] Preferably, the first wear-resistant ring is disposed on top of the sealing ring, and the piston block, the first elastic element, and the second elastic element are all disposed inside the second housing.

[0008] Preferably, the oil injection valve and the vent valve are both disposed through the first housing and are respectively connected to the interior of the first housing, and the oil injection valve and the vent valve are respectively located at the oil drain hole and the vent hole.

[0009] Preferably, the oil drain hole and the vent hole are located at the top of the second housing, and both the oil drain hole and the vent hole are connected to the interior of the first housing and are located on both sides of the piston block, respectively.

[0010] Preferably, the external dustproof mechanism includes an external retractable dustproof cover, which is disposed at the outer end of the first housing and the second housing. Mounting blocks are fixedly connected to the top and bottom of the outer surface of the external retractable dustproof cover, and connecting screws are installed inside the mounting blocks. The external retractable dustproof cover covers the outer surface of the first housing and the second housing.

[0011] Preferably, a first retaining ring is fixedly connected to the top of the piston rod, and a second retaining ring is fixedly connected to the bottom of the second housing.

[0012] Compared with the prior art, this utility model provides a low-wear guiding structure for the piston rod of an automotive shock absorber, which has the following beneficial effects:

[0013] 1. The low-wear guide structure of the piston rod of this automotive shock absorber is equipped with a wear-resistant mechanism. This mechanism utilizes a first wear-resistant ring and a second wear-resistant ring for wear resistance treatment. The wear-resistant material reduces direct friction between the piston rod and the housing, extending the overall service life of the piston rod. The first elastic element connecting the piston block and the second elastic element within the housing buffer vibration and impact during the reciprocating motion of the piston rod, reducing wear caused by impact. A sealing ring prevents internal hydraulic oil leakage, ensuring shock absorber performance. The oil injection valve and drain hole allow for periodic replenishment or replacement of hydraulic oil, maintaining lubrication. The exhaust valve and exhaust hole discharge internal gas, preventing cavitation wear and ensuring stable operation of the mechanism. Reduced wear prevents decreased shock absorption performance due to component damage, reduces the risk of oil leakage, lowers maintenance costs, and improves the overall reliability of the shock absorber.

[0014] 2. The low-wear guide structure of the piston rod of this automotive shock absorber is equipped with an external dustproof mechanism. The external retractable dust cover covers the surfaces of the first and second housings, preventing dust, mud, and other impurities from entering the shock absorber and preventing impurities from aggravating the wear of the piston rod and housing. The retractable design allows the dust cover to deform synchronously with the extension and retraction of the piston rod, without affecting the normal operation of the shock absorber, while maintaining the dustproof effect at all times. It is easy to install and disassemble, and can fit tightly to the housing to ensure the sealing of the dust cover, effectively blocking external pollutants, reducing the impact of dust and other impurities on the internal structure, indirectly reducing wear, extending the service life of various components of the shock absorber, and ensuring the long-term stable operation of the shock absorber. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the wear-resistant mechanism of the present invention.

[0018] Figure 3 This is a schematic diagram of the disassembled wear-resistant mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the external dustproof mechanism of the present invention.

[0020] In the diagram: 1. First housing; 2. Second housing; 3. Piston rod; 4. First retaining ring; 5. Second retaining ring; 6. Wear-resistant mechanism; 61. Sealing ring; 611. First wear-resistant ring; 62. Piston block; 63. First elastic element; 64. Second elastic element; 65. Second wear-resistant ring; 66. Oil injection valve; 67. Exhaust valve; 68. Oil drain hole; 69. Exhaust hole; 7. External dustproof mechanism; 71. External retractable dustproof cover; 72. Mounting block; 73. Connecting screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] This utility model provides the following technical solution:

[0024] Example 1

[0025] Please see Figure 1-4 A low-wear guiding structure for a piston rod of an automotive shock absorber includes a first housing 1, a second housing 2 at the bottom of the first housing 1, a piston rod 3 installed inside the first housing 1 and the second housing 2, wear-resistant mechanisms 6 on the surfaces of the first housing 1, the second housing 2 and the piston rod 3, and an external dustproof mechanism 7 on the surfaces of the first housing 1 and the second housing 2.

[0026] The wear-resistant mechanism 6 includes a sealing ring 61, which is installed at the bottom inside of the first housing 1. A first wear-resistant ring 611 is installed at the bottom inside of the first housing 1. A piston block 62 is installed at the bottom of the piston rod 3, and a first elastic element 63 is fixedly connected to the bottom of the piston block 62. A second elastic element 64 is installed at the bottom inside of the second housing 2, and a second wear-resistant ring 65 is fitted onto the surface of the piston block 62. An oil injection valve 66 is installed at the top left end of the first housing 1, and an exhaust valve 67 is installed at the top right end of the first housing 1. An oil drain hole 68 is opened at the top left end of the second housing 2, and an exhaust hole 69 is opened at the top right end of the second housing 2. In this device, wear resistance is achieved through the first wear-resistant ring 611 and the second wear-resistant ring 65. Wear-resistant materials reduce direct friction between the piston rod 3 and the housing, extending the overall service life of the piston rod 3. The first elastic element 63 connected to the piston block 62 and the second elastic element 64 inside the second housing 2 can buffer vibration and impact during the reciprocating motion of the piston rod, reducing wear caused by impact. The sealing ring 61 prevents internal hydraulic oil leakage, ensuring the performance of the shock absorber. The oil injection valve 66 and the oil drain hole 68 can periodically replenish or replace hydraulic oil to maintain lubrication. The exhaust valve 67 and the exhaust hole 69 discharge internal gas to avoid cavitation wear, ensure stable operation of the mechanism, reduce wear, avoid the decline in shock absorption performance due to component damage, reduce the risk of oil leakage, reduce maintenance costs, and improve the overall reliability of the shock absorber.

[0027] The first wear-resistant ring 611 is disposed on the top of the sealing ring 61, and the piston block 62, the first elastic element 63, and the second elastic element 64 are all disposed inside the second housing 2;

[0028] Both the oil injection valve 66 and the vent valve 67 are provided through the first housing 1 and are respectively connected to the inside of the first housing 1. The oil injection valve 66 and the vent valve 67 are respectively located at the oil drain hole 68 and the vent hole 69.

[0029] Oil drain hole 68 and vent hole 69 are located on the top of the second housing 2. Both oil drain hole 68 and vent hole 69 are connected to the interior of the first housing 1 and are located on both sides of the piston block 62 respectively.

[0030] Example 2

[0031] Please see Figure 1-4Based on Embodiment 1, the external dustproof mechanism 7 further includes an external retractable dustproof cover 71. The external retractable dustproof cover 71 is disposed at the outer end of the first housing 1 and the second housing 2. Mounting blocks 72 are fixedly connected to the top and bottom of the outer surface of the external retractable dustproof cover 71. Connecting screws 73 are installed inside the mounting blocks 72. The external retractable dustproof cover 71 covers the outer surface of the first housing 1 and the second housing 2, preventing dust, mud and other impurities from entering the shock absorber and preventing impurities from aggravating the wear between the piston rod 3 and the housing. The retractable design allows the dustproof cover to deform synchronously with the extension and retraction of the piston rod, without affecting the normal operation of the shock absorber, while always maintaining the dustproof effect. It is easy to install and disassemble, and can fit tightly to the housing to ensure the sealing of the dustproof cover, effectively blocking external pollutants, reducing the impact of dust and other impurities on the internal structure, indirectly reducing wear, extending the service life of each component of the shock absorber, and ensuring the long-term stable operation of the shock absorber.

[0032] The piston rod 3 is fixedly connected to the top of a first retaining ring 4, and the second housing 2 is fixedly connected to the bottom of a second retaining ring 5.

[0033] In actual operation, when this device is used, it is installed on the vehicle via the first fixing ring 4 and the second fixing ring 5. The device is treated with wear-resistant rings 611 and 65 to reduce direct friction between the piston rod 3 and the housing, extending the overall service life of the piston rod 3. The first elastic element 63 connected to the piston block 62 and the second elastic element 64 inside the second housing 2 can buffer vibration and impact during the reciprocating motion of the piston rod, reducing wear caused by impact. The sealing ring 61 prevents internal hydraulic oil leakage, ensuring the performance of the shock absorber. The oil injection valve 66 and the oil drain hole 68 allow for periodic replenishment or replacement of hydraulic oil to maintain lubrication. The exhaust valve 67 and the exhaust hole 69 discharge internal gas, preventing cavitation wear and ensuring stable operation of the mechanism. Reduced wear can prevent a decrease in shock absorption performance due to component damage, reducing the risk of oil leakage, reducing maintenance costs, and improving the overall reliability of the shock absorber. When subjected to impact, the piston rod 3 presses down, and the hydraulic oil inside the device reduces the impact force, thereby ensuring the smooth driving of the vehicle.

[0034] An external retractable dust cover 71 covers the surfaces of the first housing 1 and the second housing 2, preventing dust, mud, and other impurities from entering the shock absorber and preventing impurities from aggravating the wear between the piston rod 3 and the housing. The retractable design allows the dust cover to deform synchronously with the extension and retraction of the piston rod, without affecting the normal operation of the shock absorber, while maintaining the dustproof effect at all times. It is easy to install and disassemble, and can fit tightly to the housing to ensure the sealing of the dust cover, effectively blocking external pollutants, reducing the impact of dust and other impurities on the internal structure, indirectly reducing wear, extending the service life of various components of the shock absorber, and ensuring the long-term stable operation of the shock absorber.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A low-wear guide structure for a piston rod of an automotive shock absorber, comprising a first housing (1), characterized in that: The bottom end of the first housing (1) is provided with a second housing (2), and a piston rod (3) is installed inside the first housing (1) and the second housing (2). Wear-resistant mechanisms (6) are provided on the surfaces of the first housing (1), the second housing (2) and the piston rod (3), and an external dustproof mechanism (7) is provided on the surfaces of the first housing (1) and the second housing (2). The wear-resistant mechanism (6) includes a sealing ring (61), which is installed at the bottom of the inside of the first housing (1). A first wear-resistant ring (611) is installed at the bottom of the inside of the first housing (1). A piston block (62) is installed at the bottom of the piston rod (3). A first elastic element (63) is fixedly connected to the bottom of the piston block (62). A second elastic element (64) is installed at the bottom of the inside of the second housing (2). A second wear-resistant ring (65) is sleeved on the surface of the piston block (62). An oil injection valve (66) is installed at the top left end of the first housing (1). An exhaust valve (67) is installed at the top right end of the first housing (1). An oil drain hole (68) is opened at the top left end of the second housing (2). An exhaust hole (69) is opened at the top right end of the second housing (2).

2. The low-wear guide structure for an automotive shock absorber piston rod according to claim 1, characterized in that: The first wear-resistant ring (611) is disposed on the top of the sealing ring (61), and the piston block (62), the first elastic element (63), and the second elastic element (64) are all disposed inside the second housing (2).

3. The low-wear guide structure for an automotive shock absorber piston rod according to claim 1, characterized in that: The oil injection valve (66) and the vent valve (67) are both installed through the first housing (1) and are connected to the inside of the first housing (1). The oil injection valve (66) and the vent valve (67) are respectively located at the oil drain hole (68) and the vent hole (69).

4. The low-wear guide structure for an automotive shock absorber piston rod according to claim 1, characterized in that: The oil drain hole (68) and the exhaust hole (69) are located on the top of the second housing (2). The oil drain hole (68) and the exhaust hole (69) are both connected to the interior of the first housing (1) and are located on both sides of the piston block (62).

5. The low-wear guide structure for an automotive shock absorber piston rod according to claim 1, characterized in that: The external dustproof mechanism (7) includes an external retractable dustproof cover (71), which is located at the outer end of the first housing (1) and the second housing (2). Mounting blocks (72) are fixedly connected to the top and bottom of the outer surface of the external retractable dustproof cover (71). Connecting screws (73) are installed inside the mounting blocks (72). The external retractable dustproof cover (71) covers the outer surface of the first housing (1) and the second housing (2).

6. The low-wear guide structure for an automotive shock absorber piston rod according to claim 1, characterized in that: The piston rod (3) is fixedly connected to the top of a first fixing ring (4), and the second housing (2) is fixedly connected to the bottom of a second fixing ring (5).

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