Oil stain prevention structure, shock absorber and balance car
By employing a dual-sealing structure in the hydraulic cylinder shock absorber, the primary seal prevents oil leakage and debris contamination, while the secondary seal acts as a barrier, thus solving the problems of seal aging and failure and achieving improved sealing performance and stable shock absorption.
Patent Information
- Application Number
- CN202520270503.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-20
AI Technical Summary
During use, the seals of existing hydraulic cylinder shock absorbers are easily contaminated by oil and debris, leading to aging and damage, which affects their service life and shock absorption effect.
It adopts a dual-sealing structure, including a primary seal and a secondary seal. The primary seal prevents oil leakage and debris contamination, while the secondary seal acts as a barrier to prevent oil and debris from coming into contact, thus forming dual protection.
It effectively prevents oil leakage and debris contamination, improves sealing performance, extends the life of the shock absorber, maintains stable shock absorption effect, and enhances the stability and service life of the shock absorber.
Smart Images
Figure CN223578666U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of oil cylinder shock absorber, concretely relates to an oil stain prevention structure, shock absorber and balance car. BACKGROUND
[0002] Since the oil cylinder shock absorber has been invented, it has experienced multiple technical innovations and is widely used in the fields of vehicles and mechanical equipment. The oil cylinder shock absorber consumes vibration energy through the flow of oil in the oil cylinder, greatly reducing the vibration amplitude. For example, during vehicle driving, the oil cylinder shock absorber can effectively alleviate the vibration caused by road bumps, ensuring the stability of vehicle driving.
[0003] However, the existing oil cylinder shock absorber still has some problems. During the operation of the oil cylinder shock absorber, the oil in the oil chamber is prone to leakage. Once the leaked oil contacts the sealing element, it will accelerate the aging and damage of the sealing element, reduce the sealing performance, and thus affect the service life and stability of the oil cylinder shock absorber. In addition, the oil cylinder shock absorber will continuously generate friction during long-term damping, which will generate debris inside the oil cylinder shock absorber. These debris will contaminate the sealing element, causing the sealing element to fail, and greatly reducing the damping effect of the oil cylinder shock absorber.
[0004] In summary, the sealing element in the existing oil cylinder shock absorber is easily contaminated by oil and debris during use, which will cause aging, damage, and even failure, affecting the service life, stability, and damping effect of the oil cylinder shock absorber. UTILITY MODEL CONTENTS
[0005] In order to overcome the shortcomings of the prior art, the utility model provides an oil stain prevention structure, shock absorber and balance car to solve the problem that the sealing element in the existing oil cylinder shock absorber is easily contaminated by oil and debris during use.
[0006] One scheme of the utility model provides an oil stain prevention structure, which comprises a fastening assembly, an oil pipeline and an oil prevention assembly. The oil prevention assembly is connected with the fastening assembly, and the fastening assembly is installed on the oil pipeline.
[0007] The oil prevention assembly comprises a primary sealing element and a secondary sealing element. The primary sealing element is arranged on the oil pipeline, and the secondary sealing element is arranged on the fastening assembly. Both the primary sealing element and the secondary sealing element are in abutment with the oil pipeline.
[0008] It should be noted that the primary seal and the secondary seal can be annular sealing rings, and in actual use, oil may flow out of the oil pipeline, at which time the oil will first contact the primary seal, and since the primary seal abuts the oil pipeline, the oil will be blocked above the primary seal by the primary seal, and in this process, the primary seal can be regarded as a blocking piece of the secondary seal to isolate the secondary seal from contamination and erosion by the oil, and similarly, in the case of debris generated during long-term damping, the primary seal can also serve as a blocking piece of the secondary seal to block the secondary seal from contamination by the debris, thereby preventing the secondary seal from failing due to contamination by the debris, so that the damping effect of the shock absorber is stably maintained, and the shock absorber always maintains a good working state, thereby ensuring the damping effect of the shock absorber.
[0009] In this scheme, by providing the primary seal and the secondary seal, a double-sealing protection can be formed, wherein the primary seal can effectively block the leakage of oil in the oil pipeline, avoid the oil from contacting the secondary seal, and prevent the secondary seal from being accelerated aging and damaged due to oil erosion, thereby improving the overall sealing performance, prolonging the service life of the shock absorber, and enhancing the stability of the shock absorber.
[0010] In addition, in the case of debris generated during long-term operation of the shock absorber, the primary seal can also serve as a blocking piece of the secondary seal to block the secondary seal from contamination by the debris, thereby preventing the secondary seal from failing due to contamination by the debris, so that the damping effect of the shock absorber is stably maintained, and the shock absorber always maintains a good working state, thereby ensuring the damping effect of the shock absorber.
[0011] Compared with the existing oil cylinder shock absorber, the utility model has the following obvious advantages:
[0012] 1. The primary seal can effectively block the leakage of oil, avoid the oil from directly contacting the secondary seal, solve the problem of aging and damage of the sealing element caused by oil leakage of the existing oil cylinder shock absorber, improve the overall sealing performance, and enhance the stability of the shock absorber.
[0013] 2. The primary seal can effectively block the contamination of the secondary seal by the debris in the case of debris generated during long-term operation of the shock absorber, solve the problem of failure of the sealing element caused by contamination of the sealing element by the debris, and ensure that the damping effect of the shock absorber is stably maintained.
[0014] In one scheme, the oil pipeline comprises a movable pipeline and a static pipeline, the static pipeline has a diameter slightly smaller than that of the movable pipeline, the movable pipeline is sleeved on the static pipeline, and the static pipeline is filled with oil.
[0015] In this scheme, the movable pipeline can be flexibly moved according to the vibration condition during the operation of the shock absorber, so as to change the flow area and resistance of the oil and realize the adjustment of the damping force.
[0016] In one of the schemes, a gap exists between the movable pipe and the stationary pipe.
[0017] In this scheme, the gap between the movable pipe and the stationary pipe can provide a buffer space for the movement of the movable pipe. In the case of a sudden and violent impact on the shock absorber, the movable pipe can quickly displace within the gap to avoid damage caused by rigid contact. At the same time, during long-term use, the gap can compensate for the small deformation of the pipe due to temperature changes, mechanical stress, etc., ensuring the normal fitting and relative movement of the movable pipe and the stationary pipe, and maintaining the stability of the shock absorber.
[0018] In addition, the gap can serve as an auxiliary oil channel. During the operation of the shock absorber, part of the oil will flow in the gap, forming an additional oil circulation path, which makes the temperature distribution of the oil more uniform, prevents local overheating of the oil, and reduces the performance of the oil. At the same time, it can better lubricate the contact surface of the movable pipe and the stationary pipe, reduce friction and wear, and prolong the service life of the pipe.
[0019] In one of the schemes, a primary installation groove is formed on the movable pipe, and the primary sealing element is installed in the primary installation groove.
[0020] In one of the schemes, an external thread is provided on the outside of the movable pipe, and the fastening assembly includes an installation housing with an internal thread inside the installation housing, which is adapted to the external thread.
[0021] It should be noted that the cooperation of the internal thread and the external thread can tightly connect the installation housing and the movable pipe, thereby ensuring the synchronous movement of the installation housing and the movable pipe during the operation of the shock absorber, to avoid the situation that the installation housing restricts or even hinders the movement of the movable pipe.
[0022] In this scheme, a primary installation groove is formed on the movable pipe, which can realize the abutment of the primary sealing element and the stationary pipe on one hand, and avoid the displacement of the primary sealing element during the operation of the shock absorber, which may cause a gap between the primary sealing element and the stationary pipe, resulting in oil leakage.
[0023] In one of the schemes, a secondary installation groove is further provided inside the installation housing, and the secondary sealing element is installed in the secondary installation groove.
[0024] In this scheme, a secondary installation groove is formed inside the installation housing, which can realize the abutment of the secondary sealing element and the stationary pipe on one hand, and avoid the displacement of the secondary sealing element during the operation of the shock absorber, which may cause a gap between the secondary sealing element and the stationary pipe, resulting in oil leakage, and ultimately causing the failure of the shock absorber.
[0025] In one of the schemes, the mounting shell further comprises a sealing sleeve, which is fixedly connected to the mounting shell, and the mounting shell is sleeved on the stationary pipeline through the internal thread and the sealing sleeve.
[0026] It should be noted that the sealing sleeve can seal the gap between the movable pipeline and the stationary pipeline to isolate the movable pipeline and the stationary pipeline from the external environment.
[0027] In this scheme, by providing the sealing sleeve, on the one hand, the connection between the mounting shell and the stationary pipeline can be fastened, and on the other hand, the oil liquid that may leak into the mounting shell can be sealed and blocked in the mounting shell, preventing oil liquid leakage.
[0028] One of the schemes of the utility model provides a shock absorber, including shock absorber body and dust cover guide seat, still include preceding one kind of anti -oil dirt structure, the shock absorber body includes the oil pipeline and the anti -oil component, the dust cover guide seat includes the fastening component.
[0029] It should be noted that the dust cover guide seat is used to install an external dust cover on the shock absorber body to block external dust, impurities and other environmental factors that may affect the normal operation of the shock absorber.
[0030] In this scheme, the shock absorber can cooperate with the anti-oil dirt structure and the dust cover guide seat, on the one hand, to prevent oil leakage and debris pollution that may occur during long-term operation, and on the other hand, to block external dust, impurities and other environmental factors from entering the shock absorber.
[0031] In one of the schemes, the movable pipeline top is provided with a connecting part, and the connecting part is used to connect the frame part of the external carrier.
[0032] In one of the schemes, the stationary pipeline bottom is provided with an internal spline, and the internal spline is used to connect the wheel part of the external carrier.
[0033] In this scheme, the shock absorber body can be connected to the frame part and the wheel part of the external carrier through the connecting part at the top of the movable pipeline and the internal spline at the bottom of the stationary pipeline, respectively, so as to install the shock absorber body on the carrier, thereby realizing the shock absorption effect.
[0034] One of the schemes of the utility model provides a balance car, including frame, wheel, battery compartment and pedal, the wheel is rotatably arranged below the frame, the battery compartment is arranged on the side or inside of the frame, the pedal is arranged on the battery compartment or the frame, the frame is provided with the shock absorber of any one of the preceding schemes. BRIEF DESCRIPTION OF DRAWINGS
[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.
[0036] Figure 1 It is a whole structure sectional view of the oil-proof structure of the present application.
[0037] Figure 2 It is a whole structure schematic view of the sleeve sealing element in the oil-proof structure of the present application.
[0038] Figure 3 It is a whole structure schematic view of the primary sealing element and the secondary sealing element in the oil-proof structure of the present application.
[0039] Figure 4 It is a whole structure schematic view of the shock absorber of the present application.
[0040] Figure 5 It is a whole structure sectional view of the shock absorber of the present application.
[0041] Among them, 1, fastening assembly; 11, mounting shell; 111, internal thread; 112, secondary mounting groove; 12, sealing sleeve element; 2, oil pipeline; 21, movable pipeline; 211, primary mounting groove; 212, external thread; 213, connecting part; 22, static pipeline; 221, internal spline; 3, oil-proof assembly; 31, primary sealing element; 32, secondary sealing element; 4, shock absorber body; 5, dust cover guide seat. DETAILED DESCRIPTION
[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0043] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.
[0044] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.
[0045] Please refer to Figures 1-5 One of the embodiments of the utility model provides an oil stain prevention structure, including fastening assembly 1, oil pipeline 2 and oil prevention assembly 3, the oil prevention assembly 3 is connected with the fastening assembly 1, the fastening assembly 1 is installed on the oil pipeline 2;
[0046] The oil prevention assembly 3 includes primary seal 31 and secondary seal 32, the primary seal 31 is arranged on the oil pipeline 2, the secondary seal 32 is arranged on the fastening assembly 1, the primary seal 31 and the secondary seal 32 are all in abutment with the oil pipeline 2.
[0047] It should be noted that the primary seal 31 and the secondary seal 32 can all be annular sealing rings, in actual use, oil may flow out of the oil pipeline 2, at this time, the oil will first contact the primary seal 31, as the primary seal 31 is in abutment with the oil pipeline 2, the oil will be blocked above the primary seal 31 by the primary seal 31, in the process, the primary seal 31 can be regarded as a blocking piece of the secondary seal 32 to isolate the pollution and erosion of the oil to the secondary seal 32, additionally, in the long-term damping process, debris will be generated inside the shock absorber due to long-term friction, especially between the movable pipeline 21 and the stationary pipeline 22 in the oil pipeline 2, debris will fall into the gap between the movable pipeline 21 and the stationary pipeline 22 in the long-term friction, and flow into the gap together with the oil, finally, the oil and the debris will be blocked above the primary seal 31 by the primary seal 31.
[0048] In this embodiment, by setting the primary seal 31 and the secondary seal 32, a double-seal protection can be formed, wherein the primary seal 31 can effectively block the leakage of the oil liquid in the oil liquid pipeline 2, avoid the oil liquid from contacting the secondary seal 32, prevent the secondary seal 32 from being eroded by the oil liquid and accelerated aging and damage, thereby improving the overall sealing performance, prolonging the service life of the shock absorber and enhancing the stability of the shock absorber.
[0049] In addition, in the case that debris is generated during long-term work of the shock absorber, the primary seal 31 can also act as a barrier for the secondary seal 32 to block the pollution of the secondary seal 32 by the debris, avoid the secondary seal 32 from being invalid due to the pollution of the debris, thereby stably maintaining the shock-absorbing effect of the shock absorber and keeping a good working state, and guaranteeing the shock-absorbing effect of the shock absorber.
[0050] Compared with the existing oil cylinder shock absorber, the utility model has the following obvious advantages:
[0051] 1、The utility model discloses a primary seal 31 can effectively block the leakage of the oil liquid, avoid the oil liquid from contacting the secondary seal 32, solve the problem of the existing oil cylinder shock absorber oil liquid leakage leads to the aging damage of the seal, improve the overall sealing performance, enhance the stability of the shock absorber.
[0052] 2、The utility model discloses a primary seal 31 as the barrier for the secondary seal 32 can effectively block the pollution of the secondary seal 32 by the debris in the case that debris is generated during long-term work of the shock absorber, solve the problem of the pollution of the seal by the debris leads to the invalidation of the seal and the discount of the shock-absorbing effect, and guarantee the stable maintenance of the shock-absorbing effect of the shock absorber.
[0053] In one embodiment, the oil liquid pipeline 2 includes a movable pipeline 21 and a static pipeline 22, the static pipeline 22 has a caliber slightly smaller than that of the movable pipeline 21, the movable pipeline 21 is sleeved on the static pipeline 22, and the static pipeline 22 is filled with oil liquid.
[0054] In this embodiment, by the sleeving structure of the movable pipeline 21 and the static pipeline 22, the movable pipeline 21 can be flexibly moved according to the vibration condition during the work of the shock absorber, thereby changing the flow area and resistance of the oil liquid and realizing the adjustment of the shock-absorbing force.
[0055] In one embodiment, there is a gap between the movable pipeline 21 and the static pipeline 22.
[0056] In this embodiment, a gap is arranged between the movable pipe 21 and the stationary pipe 22, which can provide a buffer space for the movement of the movable pipe 21. When the shock absorber is subjected to a sudden and violent impact, the movable pipe 21 can quickly displace within the range of the gap to avoid damage caused by rigid contact. At the same time, during long-term use, the gap can compensate for the small deformation of the pipe caused by factors such as temperature changes and mechanical stresses, ensuring the normal fitting and relative movement of the movable pipe 21 and the stationary pipe 22, and maintaining the stability of the shock absorber.
[0057] In addition, the gap can serve as an auxiliary oil channel. When the shock absorber is working, part of the oil will flow in the gap, forming an additional oil circulation path, which makes the temperature distribution of the oil more uniform, prevents the performance of the oil from declining due to excessive local oil temperature, and also better lubricates the contact surface of the movable pipe 21 and the stationary pipe 22, reducing friction and wear, and prolonging the service life of the pipe.
[0058] In one embodiment, a primary installation groove 211 is formed on the movable pipe 21, and the primary sealing member 31 is installed in the primary installation groove 211.
[0059] In one embodiment, an external thread 212 is arranged on the outside of the movable pipe 21, and the fastening assembly 1 includes an installation housing 11, which is internally provided with an internal thread 111 that is adapted to the external thread 212.
[0060] It should be noted that the cooperation of the internal thread 111 and the external thread 212 can tightly connect the installation housing 11 and the movable pipe 21, and thus ensure that the installation housing 11 and the movable pipe 21 move synchronously during the working process of the shock absorber, so as to avoid the situation that the installation housing 11 restricts or even hinders the movement of the movable pipe 21.
[0061] In this embodiment, the primary installation groove 211 is formed on the movable pipe 21, which can realize the abutment of the primary sealing member 31 and the stationary pipe 22 on one hand, and avoid the displacement of the primary sealing member 31 during the working process of the shock absorber on the other hand, which may cause a gap between the primary sealing member 31 and the stationary pipe 22, resulting in oil leakage.
[0062] In one embodiment, the installation housing 11 is further internally provided with a secondary installation groove 112, and the secondary sealing member 32 is installed in the secondary installation groove 112.
[0063] In this embodiment, the secondary installation groove 112 is arranged inside the installation housing 11, which can realize the abutment between the secondary sealing element 32 and the stationary pipeline 22, and avoid the displacement of the secondary sealing element 32 during the operation of the shock absorber, which may cause the gap between the secondary sealing element 32 and the stationary pipeline 22, resulting in oil leakage and finally causing the failure of the shock absorber.
[0064] In one of the embodiments, the installation housing 11 further comprises a sealing sleeve element 12, which is fixedly connected to the installation housing 11, and the installation housing 11 is sleeved on the stationary pipeline 22 through the internal thread 111 and the sealing sleeve element 12.
[0065] It should be noted that the sealing sleeve element 12 can seal the gap between the movable pipeline 21 and the stationary pipeline 22, so as to isolate the movable pipeline 21 and the stationary pipeline 22 from the outside.
[0066] In this embodiment, by arranging the sealing sleeve element 12, the connection between the installation housing 11 and the stationary pipeline 22 can be fastened, and the oil that may leak into the installation housing 11 can be sealed and blocked in the installation housing 11, preventing oil leakage.
[0067] One of the embodiments of the utility model provides a shock absorber, including shock absorber body 4 and dust cover guide seat 5, still include preceding an oil stain prevention structure, shock absorber body 4 includes oil pipeline 2 and oil proof subassembly 3, dust cover guide seat 5 includes fastening subassembly 1.
[0068] It should be noted that the dust cover guide seat 5 is used to install an external dust cover on the shock absorber body 4 to block external dust, dirt and other environmental factors that may affect the normal operation of the shock absorber.
[0069] In this embodiment, the shock absorber can cooperate with the dust cover guide seat 5 through the oil stain prevention structure, which can prevent oil leakage and debris pollution that may occur during long-term operation, and block external dust, dirt and other impurities from entering the shock absorber.
[0070] In one of the embodiments, the movable pipeline 21 is provided with a connecting portion 213 at the top, which is used to connect the frame part of the external carrier.
[0071] In one of the embodiments, the stationary pipeline 22 is provided with an internal spline 221 at the bottom, which is used to connect the wheel part of the external carrier.
[0072] In this embodiment, the shock absorber body 4 is connected with the frame part and the wheel part of the external carrier respectively through the connecting part 213 at the top of the movable pipe 21 and the inner spline 221 at the bottom of the static pipe 22, so as to install the shock absorber body 4 on the carrier and realize the shock absorbing effect.
[0073] The utility model discloses an embodiment provides a balance car, including frame, wheel, battery compartment and pedal, the wheel rotation is arranged below the frame, the battery compartment is arranged in the frame side or inside, the pedal is arranged in the battery compartment or the frame, be provided with the shock absorber of any preceding item on the frame.
[0074] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the utility model concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.
Claims
1. An oil stain preventing structure characterized by comprising: The oil-proof structure comprises a fastening assembly, an oil pipeline and an oil-proof assembly, the oil-proof assembly is connected with the fastening assembly, and the fastening assembly is installed on the oil pipeline. The oil-proof assembly comprises a primary sealing member and a secondary sealing member, the primary sealing member is arranged on the oil pipeline, the secondary sealing member is arranged on the fastening assembly, and the primary sealing member and the secondary sealing member are in abutment with the oil pipeline.
2. The oil stain-proof structure according to claim 1, wherein The oil pipeline comprises a movable pipeline and a static pipeline, the static pipeline has a smaller diameter than the movable pipeline, the movable pipeline is sleeved on the static pipeline, and the static pipeline is filled with oil.
3. An oil-contamination preventing structure according to claim 2, wherein There is a gap between the movable pipeline and the static pipeline.
4. The oil-contamination preventing structure according to claim 2, wherein The primary sealing member is installed in the primary installation groove.
5. The oil-contamination preventing structure according to claim 2, wherein The movable pipeline is externally provided with external threads, the fastening assembly comprises an installation shell, the installation shell is internally provided with internal threads, and the internal threads are matched with the external threads.
6. A structure according to claim 5, wherein The installation shell is internally further provided with a secondary installation groove, and the secondary sealing member is installed in the secondary installation groove.
7. The oil-contamination preventing structure according to claim 5, wherein The installation shell further comprises a sealing sleeve connector which is fixedly connected to the installation shell, and the installation shell is sleeved on the static pipeline through the internal threads and the sealing sleeve connector.
8. A shock absorber characterized by The shock absorber body comprises the oil pipeline and the oil-proof assembly, and the dust cover guide seat comprises the fastening assembly.
9. A shock absorber as claimed in claim 8, wherein The top of the movable pipeline is provided with a connecting portion which is used for connecting a frame portion of an external carrier.
10. A shock absorber as claimed in claim 8, wherein The bottom of the static pipeline is provided with internal splines which are used for connecting a wheel portion of the external carrier.
11. A balance car, characterized in that, The shock absorber comprises a frame, a wheel, a battery compartment and a pedal, the wheel is rotationally arranged below the frame, the battery compartment is arranged on a side or inside of the frame, the pedal is arranged on the battery compartment or the frame, and the frame is provided with the shock absorber according to any one of claims 8-10.