Lubricating oil seal structure for sliding sleeve of front fork of electric vehicle

Abstract

The utility model relates to the technical field of lubricating oil seal structures, and provides an electric vehicle front fork sliding sleeve lubricating oil seal structure which comprises a connecting rod, a connecting sealing mechanism, a piston rod sealing mechanism and a lubricating mechanism. According to the piston rod sealing mechanism, the connecting base and the connecting cover are arranged and matched, the piston rod sealing mechanism can be firmly fixed, the connecting cover can be taken down when replacement is needed, operation is convenient and fast, the U-shaped sealing ring, the supporting ring and the connecting ring are arranged, the gap between the sleeve and the piston rod body can be sealed through the U-shaped sealing ring, and the sealing effect is good. After the piston rod is used for a period of time, the sealing ring is abraded, and attaching becomes poor, the connecting ring is rotated to enable the supporting ring to move downwards, pressure is applied to the inner side of the sealing ring, the sealing ring is attached to the piston rod body again, and the sealing effect is kept; by arranging the oil seal ring, the oil seal ring can prevent external impurities from entering from a gap between the piston rod main body and the connecting ring, so that the cleanness of lubricating oil is kept, and the influence on the service life of the front fork is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of lubricating oil seal structure, specifically a lubricating oil seal structure for the front fork sleeve of an electric vehicle. Background Technology

[0002] The lubricating oil seal structure of the electric vehicle front fork sliding sleeve is an important component of the electric vehicle front fork system. The sliding sleeve is fixed to the front fork tube and fits tightly with the front fork guide sleeve, allowing the front fork to slide smoothly during riding. Lubricating oil fills the inside of the sliding sleeve, which reduces friction, wear, and extends the life of the front fork. The oil seal is located at both ends of the sliding sleeve, which seals the lubricating oil and prevents dust and water from entering. This structural design ensures that the front fork can move flexibly during the electric vehicle's operation, while reducing heat generated by friction and improving the life of the front fork. The excellent performance of the oil seal structure allows the electric vehicle to maintain stable riding performance under various road conditions, bringing riders a safe and comfortable riding experience.

[0003] According to Chinese Utility Model Publication No. CN220396287U, a lubricating oil seal structure for an electric vehicle front fork sliding sleeve is disclosed. 1) When using this electric vehicle front fork sliding sleeve lubricating oil seal structure, if the sealing sleeve needs to be disassembled, simply push the movable ring to make the top block squeeze the trapezoidal block, causing the trapezoidal block to disengage from the groove. At this time, the sealing sleeve can be directly removed, which is convenient and quick, without the need for prying with a pry bar, saving time and effort and avoiding injury to workers. 2) When using this electric vehicle front fork sliding sleeve lubricating oil seal structure, if lubricating oil needs to be added, simply add lubricating oil to the oil storage chamber through the oil filling port. The lubricating oil flows into the interior of the sliding sleeve through the oil outlet hole, which is convenient and quick.

[0004] However, there are some issues to consider when implementing the above technical solutions: First, the wall thickness of the oil seal structure's sliding sleeve prevents the top block from completely pushing out the trapezoidal block, making disassembly inconvenient and limiting. Furthermore, the sealing sleeve will wear out after a period of use, affecting the sealing quality. Second, the oil outlet of the oil seal structure will still be in contact with the outside environment, causing dust and water to intrude, affecting the lubrication effect and the service life of the fork. Moreover, it is inconvenient to know the remaining amount of lubricating oil, which can easily lead to oil shortage. Utility Model Content

[0005] The purpose of this utility model is to provide a lubricating oil seal structure for the front fork sleeve of an electric vehicle, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lubricating oil seal structure for a front fork of an electric vehicle, comprising a connecting rod, a connecting sealing mechanism, a piston rod sealing mechanism, and a lubrication mechanism. The bottom of the connecting rod is connected to a piston rod body, a sleeve is sleeved on the outside of the piston rod body, a connecting sealing mechanism is installed on the outside of the sleeve, a piston rod sealing mechanism is installed on the top of the sleeve, and a lubrication mechanism is provided on the top of the piston rod sealing mechanism.

[0007] Preferably, the connecting sealing mechanism includes a connecting seat, a connecting cover, a sealing groove, and a sealing strip. The connecting seat is sleeved on the outer side of the sleeve, and the connecting cover is bolted to the connecting seat.

[0008] Preferably, a sealing groove is provided on the top surface of the connecting seat, and a sealing strip is sleeved inside the sealing groove, the sealing strip being tightly fitted to the connecting seat and the connecting cover.

[0009] Preferably, the piston rod sealing mechanism includes a groove, a sealing ring, a support ring, a connecting ring, and an oil seal ring. The top of the sleeve has a groove, and a sealing ring is fitted inside the groove. The sealing ring fits tightly with the sleeve, and the inner side of the sealing ring is U-shaped.

[0010] Preferably, a support ring is fitted inside the sealing ring, the shape of the support ring matches the shape of the sealing ring, a connecting ring is welded to the top of the support ring, and the connecting ring and the connecting cover are threaded together.

[0011] Preferably, an oil seal ring is fitted onto the inner top of the connecting ring. The oil seal ring is made of silicone rubber and fits tightly against the piston rod body.

[0012] Preferably, the lubrication mechanism includes a lubricating oil chamber, an oil outlet, an oil filling port, and an observation window. The lubricating oil chamber is located inside the connecting ring, and the oil outlet is located on the inner surface of the connecting ring.

[0013] Preferably, the connecting ring has an oil filler port on the top front and an observation window on the top front, the observation window being made of transparent glass.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model uses a connecting seat and a connecting cover to securely fix the piston rod sealing mechanism. When replacement is needed, the connecting cover can be removed for easy and quick operation. By setting a "U"-shaped sealing ring, a support ring, and a connecting ring, the "U"-shaped sealing ring can seal the gap between the sleeve and the piston rod body. After a period of use, when the sealing ring wears down and the fit deteriorates, rotating the connecting ring moves the support ring down and applies pressure to the inside of the sealing ring, so that the sealing ring and the piston rod body are brought closer together again to maintain the sealing effect.

[0016] This invention incorporates an oil seal ring, which prevents external impurities from entering through the gap between the piston rod body and the connecting ring, thus keeping the lubricating oil clean and avoiding affecting the service life of the fork. An observation window allows for timely monitoring of the oil level in the lubrication chamber, and lubricating oil can be added through the filler port when needed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance structure of this utility model.

[0018] Figure 2 This is a schematic diagram showing the fit between the sleeve, connecting seat, sealing groove, and locking groove of this utility model.

[0019] Figure 3 This is an explosive fit diagram of the sleeve, connecting seat, connecting cover, sealing strip, sealing ring, connecting ring, oil seal ring, and oil filling port of this utility model.

[0020] Figure 4 This is a cross-sectional view of the sealing ring and connecting ring of this utility model.

[0021] In the diagram: 1. Connecting rod; 2. Piston rod body; 3. Sleeve; 4. Connecting sealing mechanism; 401. Connecting seat; 402. Connecting cover; 403. Sealing groove; 404. Sealing strip; 5. Piston rod sealing mechanism; 501. Slot; 502. Sealing ring; 503. Support ring; 504. Connecting ring; 505. Oil seal ring; 6. Lubrication mechanism; 601. Lubricating oil chamber; 602. Oil outlet; 603. Oil filling port; 604. Observation window. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] 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.

[0026] Please see Figure 1-4 An embodiment of this utility model provides a lubricating oil seal structure for a front fork of an electric vehicle, comprising a connecting rod 1, a connecting sealing mechanism 4, a piston rod sealing mechanism 5, and a lubrication mechanism 6. The bottom of the connecting rod 1 is connected to a piston rod body 2, a sleeve 3 is sleeved on the outside of the piston rod body 2, the connecting sealing mechanism 4 is installed on the outside of the sleeve 3, the piston rod sealing mechanism 5 is installed on the top of the sleeve 3, and the lubrication mechanism 6 is provided on the top of the piston rod sealing mechanism 5.

[0027] Specifically, the connecting sealing mechanism 4 includes a connecting seat 401, a connecting cover 402, a sealing groove 403, and a sealing strip 404. The connecting seat 401 is sleeved on the outside of the sleeve 3, and the connecting cover 402 is bolted to the connecting seat 401. The connecting seat 401 and the connecting cover 402 cooperate to firmly fix the piston rod sealing mechanism 5. When replacement is needed, the connecting cover 402 can be removed for operation, which is convenient and quick.

[0028] Specifically, a sealing groove 403 is provided on the top surface of the connecting seat 401, and a sealing strip 404 is fitted inside the sealing groove 403. The sealing strip 404 fits tightly with the connecting seat 401 and the connecting cover 402. The cooperation between the sealing strip 404 and the sealing groove 403 can prevent external impurities from entering through the gap between the connecting seat 401 and the connecting cover 402.

[0029] Specifically, the piston rod sealing mechanism 5 includes a groove 501, a sealing ring 502, a support ring 503, a connecting ring 504, and an oil seal ring 505. The top of the sleeve 3 has a groove 501, and the sealing ring 502 is fitted inside the groove 501. The sealing ring 502 fits tightly with the sleeve 3. The inner side of the sealing ring 502 is U-shaped. The U-shaped sealing ring 502 can seal the gap between the sleeve 3 and the piston rod body 2.

[0030] Specifically, a support ring 503 is fitted inside the sealing ring 502. The shape of the support ring 503 matches the shape of the sealing ring 502. A connecting ring 504 is welded to the top of the support ring 503. The connecting ring 504 is threadedly connected to the connecting cover 402. After a period of use, when the sealing ring 502 wears down and the fit deteriorates, the connecting ring 504 is rotated to move the support ring 503 down and apply pressure to the inside of the sealing ring 502, so that the sealing ring 502 and the piston rod body 2 are brought closer together again to maintain the sealing effect.

[0031] Specifically, an oil seal ring 505 is fitted inside the top of the connecting ring 504. The oil seal ring 505 is made of silicone rubber and fits tightly with the piston rod body 2. The oil seal ring 505 can prevent external impurities from entering through the gap between the piston rod body 2 and the connecting ring 504, keeping the lubricating oil clean and avoiding affecting the service life of the fork.

[0032] Specifically, the lubrication mechanism 6 includes a lubrication oil chamber 601, an oil outlet 602, an oil filling port 603, and an observation window 604. The lubrication oil chamber 601 is located inside the connecting ring 504, and the oil outlet 602 is provided on the inner surface of the connecting ring 504. The lubricating oil in the lubrication oil chamber 601 gradually seeps out from the oil outlet 602 to lubricate the piston rod body 2, reduce friction during movement, and improve the service life of the fork.

[0033] Specifically, the connecting ring 504 has a filler port 603 on the top front and an observation window 604 on the top front. The observation window 604 is made of transparent glass. The oil storage status in the lubrication chamber 601 can be monitored in a timely manner through the observation window 604. When the lubrication is insufficient, it can be added through the filler port 603.

[0034] Working principle: First, the connecting seat 401 and the connecting cover 402 cooperate to firmly fix the piston rod sealing mechanism 5. When replacement is needed, simply remove the connecting cover 402 for easy and quick operation. Simultaneously, the sealing strip 404 and the sealing groove 403 cooperate to prevent external impurities from entering through the gap between the connecting seat 401 and the connecting cover 402. Next, the "U"-shaped sealing ring 502 seals the gap between the sleeve 3 and the piston rod body 2. At the same time, the oil seal ring 505 prevents external impurities from entering through the gap between the piston rod body 2 and the connecting ring 504, keeping the lubricating oil clean and preventing it from affecting the front... As the fork's lifespan increases, lubricating oil in the lubrication chamber 601 gradually seeps out from the oil outlet 602 to lubricate the piston rod body 2, reducing friction during movement and improving the fork's lifespan. After a period of use, when the sealing ring 502 wears down and the fit deteriorates, rotating the connecting ring 504 causes the support ring 503 to move down, applying pressure to the inside of the sealing ring 502, so that the sealing ring 502 and the piston rod body 2 are brought closer together again, maintaining the sealing effect. Furthermore, the oil level in the lubrication chamber 601 can be monitored in a timely manner through the observation window 604. When the lubricating oil is insufficient, it can be added through the oil filler port 603.

[0035] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lubricating oil seal structure for a front fork sleeve of an electric vehicle, comprising a connecting rod (1), a connecting sealing mechanism (4), a piston rod sealing mechanism (5), and a lubrication mechanism (6), characterized in that: The bottom of the connecting rod (1) is connected to the piston rod body (2), the outside of the piston rod body (2) is sleeved with a sleeve (3), the outside of the sleeve (3) is equipped with a connecting sealing mechanism (4), the top of the sleeve (3) is equipped with a piston rod sealing mechanism (5), and the top of the piston rod sealing mechanism (5) is provided with a lubrication mechanism (6).

2. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The connecting sealing mechanism (4) includes a connecting seat (401), a connecting cover (402), a sealing groove (403), and a sealing strip (404). The connecting seat (401) is sleeved on the outside of the sleeve (3), and the connecting cover (402) is connected to the connecting seat (401) by bolts.

3. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 2, characterized in that: The top surface of the connecting seat (401) is provided with a sealing groove (403), and a sealing strip (404) is sleeved inside the sealing groove (403). The sealing strip (404) is in close contact with the connecting seat (401) and the connecting cover (402).

4. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The piston rod sealing mechanism (5) includes a groove (501), a sealing ring (502), a support ring (503), a connecting ring (504), and an oil seal ring (505). The top of the sleeve (3) is provided with a groove (501). The sealing ring (502) is sleeved inside the groove (501). The sealing ring (502) fits tightly with the sleeve (3). The inner side of the sealing ring (502) is "U".

5. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 4, characterized in that: A support ring (503) is fitted inside the sealing ring (502). The shape of the support ring (503) matches the shape of the sealing ring (502). A connecting ring (504) is welded to the top of the support ring (503). The connecting ring (504) is threadedly connected to the connecting cover (402).

6. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 4, characterized in that: An oil seal ring (505) is fitted on the inner side of the top of the connecting ring (504). The oil seal ring (505) is made of silicone rubber and fits tightly with the piston rod body (2).

7. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The lubrication mechanism (6) includes a lubricating oil chamber (601), an oil outlet (602), an oil filling port (603), and an observation window (604). The lubricating oil chamber (601) is located inside the connecting ring (504), and the oil outlet (602) is provided on the inner surface of the connecting ring (504).

8. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 7, characterized in that: The connecting ring (504) has an oil filling port (603) on the top front and an observation window (604) on the top front, which is made of transparent glass.

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