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, in particular to an electric vehicle front fork sliding sleeve lubricating oil seal structure which comprises a front fork body and a sliding sleeve body connected with the front fork body in a sliding mode, a sealing sleeve is arranged above the sliding sleeve body, and the lower end face of the sealing sleeve is fixedly connected with a clamping ring. An annular groove is formed in the upper end face of the sliding sleeve body, the clamping ring is matched with the annular groove in specification and size, the clamping ring corresponds to the annular groove in position, the outer wall of the sliding sleeve body is slidably connected with a plurality of circumferentially-distributed clamping blocks, an annular clamping groove is formed in the outer wall of the clamping ring, and the clamping blocks are matched with the annular clamping groove in position. And the outer wall of the sliding sleeve body is in threaded connection with a threaded sleeve, and rapid disassembly and assembly of the sealing sleeve are achieved through a linkage structure of the threaded sleeve and the clamping block. During disassembly, the limiting is relieved only by rotating the threaded sleeve, and during installation, locking can be realized by reverse operation without violent disassembly of a traditional pinch bar, so that the risks of part damage and personnel injury are avoided, and the maintenance efficiency and the safety are remarkably improved.

Description

Technical Field

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

[0002] The two fixed brackets that hold the front wheel together constitute the electric bicycle's front fork. Located at the front of the structure, the front fork connects to the handlebars at its upper end, the frame to the head tube, and the front axle at its lower end, forming the bicycle's steering system. Its function is crucial: controlling direction; ensuring safety from the impact of forward inertia; and the outer front fork also plays an important role in maintaining the electric bicycle's balance while riding.

[0003] Chinese patent CN220396287U discloses a lubricating oil seal structure for a front fork of an electric vehicle, belonging to the technical field of lubricating oil seal structures. This lubricating oil seal structure for a front fork of an electric vehicle includes a front fork and a sliding sleeve disposed at its bottom. A sealing sleeve is provided at the top of the sliding sleeve, and a retaining ring is provided at the bottom of the sealing sleeve. A trapezoidal block is elastically connected inside the retaining ring. A groove matching the trapezoidal block is provided on the surface of the sliding sleeve. A fixing ring is provided on the outer surface of the sliding sleeve. A first spring is provided at the top of the fixing ring, and a movable ring is provided at the end of the first spring. A top block is provided on the inner wall of the movable ring. This lubricating oil seal structure for a front fork of an electric vehicle allows the sealing sleeve to be removed directly without the need for prying, making it convenient, quick, and labor-saving, and preventing injury to workers. When lubricating oil needs to be added, it is only necessary to add lubricating oil into the oil storage chamber through the filling port, and the lubricating oil flows into the interior of the sliding sleeve through the oil outlet, making it convenient and quick.

[0004] The aforementioned document discloses a lubricating oil seal structure for the sliding sleeve of an electric vehicle. In use, the sliding movable ring can only push the trapezoidal block into the slot through the top block, but cannot push the trapezoidal block out of the slot. This results in the inability to separate the retaining ring from the sliding sleeve. Furthermore, the movable ring is limited by a spring, and during operation, vibration can easily cause the top block to accidentally touch the trapezoidal block, leading to the retaining ring disengaging. Therefore, a lubricating oil seal structure for the sliding sleeve of an electric vehicle is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a lubricating oil seal structure for the front fork sliding sleeve of an electric vehicle. The seal sleeve can be quickly and non-destructively disassembled and assembled through the linkage structure of the threaded sleeve and the locking block. At the same time, it integrates an oil storage chamber and an oil outlet to achieve self-lubrication, taking into account both convenient maintenance and long-term lubrication function.

[0006] This utility model is implemented as follows: a lubricating oil seal structure for a front fork slide sleeve of an electric vehicle includes a front fork body and a slide sleeve body slidably connected thereto. A sealing sleeve is provided on the upper part of the slide sleeve body, and a retaining ring is fixedly connected to the lower end face of the sealing sleeve. An annular groove is formed on the upper end face of the slide sleeve body, and the retaining ring is adapted to the specifications and dimensions of the annular groove. The positions of the retaining ring and the annular groove are corresponding. Multiple circumferentially distributed retaining blocks are slidably connected to the outer wall of the slide sleeve body. An annular retaining groove is formed on the outer wall of the retaining ring. A threaded sleeve is threadedly connected to the outer wall of the slide sleeve body.

[0007] As a preferred embodiment of the lubricating oil seal structure for the front fork sleeve of an electric vehicle according to this utility model, the inner side of the sealing sleeve is provided with an oil storage cavity, and the inner wall of the sealing sleeve is provided with a plurality of oil outlet holes.

[0008] As a preferred embodiment of the lubricating oil seal structure for the front fork sleeve of an electric vehicle according to this utility model, the upper end face of the sealing sleeve is provided with an oil filling port, and the outer wall of the oil filling port is threadedly connected with a sealing cap.

[0009] As a preferred embodiment of the lubricating oil seal structure for the front fork sleeve of an electric vehicle according to this utility model, a limiting ring located below the threaded sleeve is fixedly connected to the outer wall of the sleeve body.

[0010] As a preferred embodiment of the lubricating oil seal structure for the front fork sleeve of an electric vehicle according to this utility model, the cross-section of the end of the locking block near the locking ring and the annular locking groove are both triangular.

[0011] As a preferred embodiment of the lubricating oil seal structure for the front fork sleeve of an electric vehicle according to this utility model, the upper end of the threaded sleeve is an inwardly inclined slope.

[0012] The beneficial effects of this utility model are:

[0013] 1. The sealing sleeve is quickly installed and removed through a linkage structure between the threaded sleeve and the locking block (beveled fit + triangular groove). Disassembly only requires rotating the threaded sleeve to release the limit, and installation is achieved by reversing the operation to lock it in place. This eliminates the need for traditional pry bars and forced disassembly, avoiding component damage and personnel injury risks, and significantly improving maintenance efficiency and safety.

[0014] 2. The integrated oil reservoir and oil outlet design, along with the reusable filler neck, ensures continuous and even lubrication of the lubricating oil to the sliding interface. This reduces the hassle of frequent disassembly and lubrication, ensures the fork and sleeve remain lubricated for extended periods, extends component life, and reduces maintenance frequency. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is an overall structural diagram of a lubricating oil seal structure for a front fork sleeve of an electric vehicle according to the present invention.

[0017] Figure 2 This is a front sectional view of the lubricating oil seal structure for the front fork sleeve of an electric vehicle according to this utility model.

[0018] Figure 3 This is a structural diagram of the present invention after disassembly.

[0019] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0020] Figure 5 This is a structural diagram of the sealing sleeve of this utility model.

[0021] Figure 6 This is a structural diagram of the card block of this utility model.

[0022] Figure 7 This is a structural diagram of the threaded sleeve of this utility model.

[0023] The markings in the diagram are: 1. Front fork body; 2. Slip sleeve body; 3. Sealing sleeve; 4. Snap ring; 5. Annular groove; 6. Snap block; 7. Annular snap groove; 8. Threaded sleeve; 9. Limiting ring; 10. Oil reservoir; 11. Oil filler port; 12. Oil outlet. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Please see Figure 1-7 An oil seal structure for a front fork lubricating oil seal of an electric vehicle includes a front fork body 1 and a sliding sleeve body 2 slidably connected thereto. A sealing sleeve 3 is provided on the upper part of the sliding sleeve body 2. A retaining ring 4 is fixedly connected to the lower end face of the sealing sleeve 3. An annular groove 5 is provided on the upper end face of the sliding sleeve body 2. The retaining ring 4 and the annular groove 5 are matched in size and position. A plurality of circumferentially distributed retaining blocks 6 are slidably connected to the outer wall of the sliding sleeve body 2. An annular retaining groove 7 is provided on the outer wall of the retaining ring 4. A threaded sleeve 8 is threadedly connected to the outer wall of the sliding sleeve body 2.

[0026] In this embodiment: When disassembling the sealing sleeve 3, the threaded sleeve 8 is rotated, causing it to move downwards until it abuts against the limiting ring 9. At this time, the locking block 6 loses the limiting effect of the threaded sleeve 8 and pulls the sealing sleeve 3 upwards. The sealing sleeve 3 drives the retaining ring 4 to move upwards, which in turn drives the locking block 6 to slide outwards through the annular groove 7. This causes one end of the locking block 6 to retract into the sliding sleeve body 2, while the other end slides out of the sliding sleeve body 2 and rests against the inclined inner wall of the threaded sleeve 8, facilitating the smooth upward pullout of the retaining ring 4, thereby removing the sealing sleeve. 3. When successfully removing and installing the sealing sleeve 3, insert the retaining ring 4 into the annular groove 5 and fully insert it to the bottom. At this time, the retaining block 6 is aligned with the annular groove 7. Rotate the threaded sleeve 8 in the opposite direction to make the threaded sleeve 8 move upward. Under the action of the inclined inner wall of the threaded sleeve 8, the retaining block 6 is driven to slide inward, so that the retaining block 6 is engaged in the annular groove 7, fixing the retaining ring 4, thereby fixing the sealing sleeve 3. When removing the sealing sleeve 3, this utility model does not require the use of a pry bar for violent prying, which is convenient, quick, time-saving, labor-saving, and avoids injury to workers.

[0027] As a technical optimization of this utility model, the sealing sleeve 3 has an oil storage cavity 10 inside, and the inner wall of the sealing sleeve 3 has a plurality of oil outlet holes 12.

[0028] In this embodiment, lubricating oil flows into the interior of the sleeve body 2 through the oil outlet 12, which facilitates lubrication of the fork body 1 and the sleeve body 2.

[0029] As a technical optimization of this utility model, the upper end face of the sealing sleeve 3 is provided with an oil filling port 11, and the outer wall of the oil filling port 11 is threaded with a sealing cap.

[0030] In this embodiment, when lubricating oil needs to be added, simply open the sealing cap and add lubricating oil into the oil storage chamber 10 through the oil filling port 11, which is convenient and quick.

[0031] As a technical optimization of this utility model, a limiting ring 9 located below the threaded sleeve 8 is fixedly connected to the outer wall of the sliding sleeve body 2.

[0032] In this embodiment: the limiting ring 9 facilitates the limiting of the threaded sleeve 8, preventing the threaded sleeve 8 from being positioned too low and losing its limiting effect on the locking block 6, thus causing the locking block 6 to disengage.

[0033] As a technical optimization of this utility model, the end of the card block 6 near the card ring 4 and the cross section of the annular card groove 7 are both triangular.

[0034] In this embodiment, by setting the end of the card block 6 near the card ring 4 and the cross section of the annular card groove 7 as a triangle, it is convenient to move the card block 6 outward when the card ring 4 is moved up and down.

[0035] As a technical optimization of this utility model, the upper end of the threaded sleeve 8 is an inwardly inclined slope.

[0036] In this embodiment: by setting the upper end of the threaded sleeve 8 as an inwardly inclined slope, it is convenient to move the threaded sleeve 8 upward and drive the locking block 6 to slide inward.

[0037] The working principle and usage process of this utility model are as follows: When disassembling the sealing sleeve 3, rotate the threaded sleeve 8 to move it downwards until it abuts against the limiting ring 9. At this time, the locking block 6 loses the limiting effect of the threaded sleeve 8 and pulls the sealing sleeve 3 upwards. The sealing sleeve 3 drives the retaining ring 4 to move upwards, and then drives the locking block 6 to slide outwards through the annular groove 7. This causes one end of the locking block 6 to retract into the sliding sleeve body 2, and the other end of the locking block 6 to slide out of the sliding sleeve body 2 and press against the inclined inner wall of the threaded sleeve 8, making it easy for the retaining ring 4 to be pulled out upwards smoothly. When the sealing sleeve 3 is successfully removed, insert the retaining ring 4 into the annular groove 5 and fully insert it to the bottom. At this time, the retaining block 6 is aligned with the annular groove 7. Rotate the threaded sleeve 8 in the opposite direction to make the threaded sleeve 8 move upward. Under the action of the inclined inner wall of the threaded sleeve 8, the retaining block 6 is driven to slide inward, so that the retaining block 6 is locked into the annular groove 7, fixing the retaining ring 4, thereby fixing the sealing sleeve 3. When disassembling the sealing sleeve 3, there is no need to use a pry bar for violent prying, which is convenient, quick and easy, saves time and effort, and avoids injury to workers.

[0038] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0039] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A lubricating oil seal structure for a front fork sliding sleeve of an electric vehicle, comprising a front fork body (1) and a sliding sleeve body (2) slidably connected thereto, characterized in that: A sealing sleeve (3) is provided on the upper part of the sliding sleeve body (2). A retaining ring (4) is fixedly connected to the lower end face of the sealing sleeve (3). An annular groove (5) is opened on the upper end face of the sliding sleeve body (2). The retaining ring (4) and the annular groove (5) are matched in size. The positions of the retaining ring (4) and the annular groove (5) are corresponding. Multiple circumferentially distributed retaining blocks (6) are slidably connected to the outer wall of the sliding sleeve body (2). An annular retaining groove (7) is opened on the outer wall of the retaining ring (4). A threaded sleeve (8) is threadedly connected to the outer wall of the sliding sleeve body (2).

2. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The sealing sleeve (3) has an oil storage cavity (10) inside, and the inner wall of the sealing sleeve (3) has several oil outlet holes (12).

3. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The upper end face of the sealing sleeve (3) is provided with an oil filling port (11), and the outer wall of the oil filling port (11) is threaded with a sealing cap.

4. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The outer wall of the sliding sleeve body (2) is fixedly connected to a limiting ring (9) located below the threaded sleeve (8).

5. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The cross-section of the end of the card block (6) near the card ring (4) and the annular card groove (7) are both triangular.

6. The lubricating oil seal structure for the front fork sleeve of an electric vehicle according to claim 1, characterized in that: The upper end of the threaded sleeve (8) is an inwardly inclined slope.

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