A shock absorbing structure for front fork of electric vehicle

Abstract

The invention discloses a shock-absorbing structure for a front fork of an electric vehicle, belonging to the technical field of electric vehicles, and comprising: an outer sleeve, which is in the shape of a cylinder with an opening at one end, and a sink groove is provided at the opening of the outer sleeve; a buffer rod, which is coaxially mounted inside the outer sleeve, and a buffer assembly is connected between the buffer rod and the outer sleeve; an oil seal; a bladder body, which is mounted on the oil seal, and has a plurality of one-way air outlets on the upper side of the bladder body, and an air intake pipe for one-way air intake is mounted on the side of the bladder body; a scraper ring, which is mounted on the upper side of the bladder body; when the buffer rod slides toward the outside of the outer sleeve, external air enters the interior of the bladder body through the air intake pipe, and in the process of the buffer rod sliding toward the interior of the outer sleeve, the scraper ring can clean the dust on the buffer rod, and at the same time the bladder body is squeezed, and the air inside it is blown out through the exhaust port to clean the scraped dust.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a front fork shock absorbing structure of an electric vehicle. Background Art

[0002] In the front fork shock-absorbing structure of an electric vehicle, the relative sliding between the buffer rod and the outer sleeve is the key to achieving the shock-absorbing function. However, in actual use, due to the complexity of the driving environment of the electric vehicle, dust is easily adhered to the outer side of the buffer rod. When the buffer rod slides, the dust may enter the gap between the buffer rod and the outer sleeve, affecting the sealing of the two, which may lead to a decrease in the shock-absorbing effect and even cause more serious mechanical failures. In order to solve the above problems, the present invention provides a front fork shock-absorbing structure of an electric vehicle. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a shock absorbing structure for the front fork of an electric vehicle. When the buffer rod slides toward the inside of the outer sleeve, the scraper ring can clean the dust on the buffer rod. At the same time, the bladder is squeezed and the air inside it is blown out through the exhaust port to clean the scraped dust.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a shock absorbing structure of an electric vehicle front fork, comprising:

[0005] An outer sleeve, the outer sleeve is cylindrical with one end open, and a sink groove is provided at the opening of the outer sleeve;

[0006] A buffer rod, which is coaxially mounted inside the outer sleeve and slides along the axis of the outer sleeve, and a buffer assembly is connected between the buffer rod and the outer sleeve;

[0007] An oil seal installed inside the sink;

[0008] The bladder body is mounted on the oil seal, and a plurality of one-way exhaust ports are provided on the upper side of the bladder body, an air intake pipe for one-way air intake is installed on the side of the bladder body, and a through hole corresponding to the air intake pipe is provided on the side of the outer sleeve;

[0009] A scraper ring, the scraper ring being mounted on the upper side of the capsule;

[0010] When the buffer rod slides toward the inside of the outer sleeve, the scraper ring scrapes off the dust attached to the outside of the buffer rod. At the same time, the capsule is compressed due to friction, and the air inside the capsule is blown out through the exhaust port to clean up the dust scraped off by the scraper ring.

[0011] When the buffer rod slides toward the outside of the outer sleeve, the bladder is stretched due to friction, and at this time, the outside air enters the interior of the bladder through the air inlet pipe.

[0012] Preferably, the capsule is cylindrical in shape, and a plurality of convex rings are provided on the outer annular surface and the inner annular surface of the capsule.

[0013] Preferably, an annular groove matching with the convex ring is provided on the groove wall of the sink groove and the outer side surface of the buffer rod.

[0014] Preferably, the scraper ring has a cross-section in the shape of a right triangle, and a longer right-angled side of the scraper ring fits with the buffer rod.

[0015] Preferably, the plurality of exhaust ports are evenly distributed on the capsule along the circumference of the capsule, and a first spring sheet is provided above each exhaust port, one side of the first spring sheet is fixedly connected to the capsule, and the first spring sheet fits tightly with the upper side of the capsule under the action of its own elastic force.

[0016] Preferably, the side of the first elastic sheet away from the axis of the buffer rod is fixedly connected to the capsule body.

[0017] Preferably, a second elastic sheet is provided on the inner side of the air inlet pipe, one side of the second elastic sheet is fixedly connected to the inner side wall of the sac body, and the second elastic sheet is tightly fitted to the inner side wall of the sac body under the action of its own elastic force.

[0018] Preferably, the buffer rod is hollow, and the interior of the buffer rod is connected to a mounting rod via a spring, the lower end of the mounting rod passes through the buffer rod and extends to the interior of the outer sleeve, the mounting rod is engaged with a bolt through a threaded opening provided on its lower end surface, and the threaded column of the bolt extends to the interior of the outer sleeve through a through hole provided on the outer sleeve.

[0019] The beneficial effects of the present invention are:

[0020] The scraper ring of the present invention can scrape off dust adhering to the buffer rod as the buffer rod slides along the axis of the outer sleeve toward the inside of the outer sleeve, thereby preventing dust from adhering to the buffer rod and entering between the buffer rod and the outer sleeve during the movement of the buffer rod, thereby affecting the seal between the buffer rod and the outer sleeve.

[0021] The present invention realizes, through the arrangement of the sac, the air inlet pipe and the air outlet, that when the buffer rod slides toward the inside of the outer sleeve, the sac is compressed, and the air inside the sac is ejected through the air inlet pipe to clean the dust scraped off by the scraper ring; and when the buffer rod slides toward the outside of the outer sleeve, the sac is stretched, and the outside air enters the interior of the sac through the air inlet pipe.

[0022] The present invention provides convex rings on the inner and outer annular surfaces of the bladder body, and annular grooves on the groove walls of the sink groove and the outer side surface of the buffer rod. When the bladder body is compressed or stretched, the convex rings and the groove walls of different annular grooves are squeezed against each other, which can play an auxiliary buffering role. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of a front fork shock absorbing structure of an electric vehicle provided in an embodiment of the present invention.

[0025] Figure 2 It is a cross-sectional view of the outer sleeve and the buffer rod of the present invention.

[0026] Figure 3 For the present invention Figure 2 Enlarged view of point A.

[0027] Figure 4 It is a schematic diagram of the assembly of the outer sleeve, the buffer rod and the bladder body of the present invention.

[0028] Figure 5 For the present invention Figure 4 Enlarged view of point B.

[0029] Figure 6 It is an exploded view of the outer sleeve and the buffer rod of the present invention.

[0030] Description of reference numerals:

[0031] 1. Outer sleeve, 2. Buffer rod, 3. Sink, 4. Oil seal, 5. Bag, 6. Exhaust port, 7. Inlet pipe, 8. Scraper ring, 9. Ring groove, 10. First spring piece, 11. Second spring piece, 12. Spring, 13. Mounting rod, 14. Bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention provides a shock absorbing structure for the front fork of an electric vehicle, such as Figures 1 to 6 shown.

[0034] Embodiment 1:

[0035] A shock absorbing structure for a front fork of an electric vehicle comprises an outer sleeve 1, which is in the shape of a cylinder with an opening at one end. A buffer rod 2 is inserted into the inner part of the outer sleeve 1, and the axis of the buffer rod 2 coincides with the axis of the outer sleeve 1. A recessed groove 3 is provided on the inner side surface of the opening of the outer sleeve 1, an oil seal 4 is installed in the recessed groove 3, a capsule 5 is installed on the oil seal 4, the capsule 5 is annular in shape, and a scraper ring 8 is fixedly installed on the upper side surface of the capsule 5, and the inner ring surface of the scraper ring 8 is tightly fitted with the outer side surface of the buffer rod 2.

[0036] The buffer rod 2 is hollow, and the interior of the buffer rod 2 is connected to a mounting rod 13 through a spring 12. The upper end of the buffer rod 2 is connected to an end cap through a thread. When the end cap is threadedly mounted on the buffer rod 2, the spring 12 is in a compressed state, one end of the spring 12 is tightly pressed against the end cap, and the other end is a first mounting rod 13. The lower end of the mounting rod 13 passes through the buffer rod 2 and extends to the interior of the outer sleeve 1. The mounting rod 13 is in the shape of a stepped shaft, with the end with a thicker diameter located inside the buffer rod 2, and the end with a thinner diameter passing through the buffer rod 2 and extending to the interior of the outer sleeve 1. The mounting rod 13 is meshed and connected with a bolt 14 through a threaded opening on its lower end surface. The threaded column of the bolt 14 is screwed into and fixed to the interior of the outer sleeve 1 through a through hole provided on the outer sleeve 1. The mounting rod 13 can be connected to the outer sleeve 1 through the bolt 14, so that when the buffer rod 2 slides toward the interior of the outer sleeve 1, the spring 12 will be compressed, thereby smoothly playing a buffering role.

[0037] The upper end surface of the sac body 5 is provided with a plurality of one-way exhaust ports 6, and an air inlet pipe 7 is installed on the side of the sac body 5, and the air inlet pipe 7 extends to the outside of the outer sleeve 1 through the through hole provided on the side of the outer sleeve 1, and the air inlet pipe 7 can assist in fixing the lower end of the sac body 5 so that the sac body 5 can stably open and contract when the buffer rod 2 slides back and forth. In the process of the buffer rod 2 sliding toward the outside of the outer sleeve 1, the sac body 5 will be stretched under the action of friction. At this time, the outside air will enter the interior of the sac body 5 through the air inlet pipe 7. In the process of the buffer rod 2 sliding toward the inside of the outer sleeve 1, the sac body 5 will be compressed under the action of friction. At this time, the air inside the sac body 5 will be blown out through the exhaust port 6, and the dust scraped by the scraper ring 8 will be blown off the scraper ring 8, thereby preventing the dust from remaining on the scraper ring 8 and affecting the sealing between the buffer rod 2 and the scraper ring 8 during the reciprocating sliding of the buffer rod 2.

[0038] The cross-section of the scraper ring 8 is in the shape of a right triangle, and the long right-angled side of the scraper ring 8 fits with the buffer rod 2. When the buffer rod 2 slides into the outer sleeve 1, the scraper ring 8 can better scrape off the dust on the buffer rod 2. Moreover, the length of the long right-angled side of the scraper ring 8 is longer than the other two sides, and the length that fits with the buffer rod 2 is also longer, which means that the sealing between the buffer rod 2 and the scraper ring 8 is better. Moreover, the inclined surface of the scraper ring 8 faces the side away from the axis of the buffer rod 2, which can guide the gas blown out from the exhaust port 6, so that the dust scraped off by the scraper ring 8 can be better cleaned.

[0039] Embodiment 2:

[0040] A plurality of exhaust ports 6 are evenly distributed on the capsule 5 along the circumference of the capsule 5. The gas exhausted from the exhaust ports 6 can be evenly blown to the scraper ring 8 to clean the dust on the scraper ring 8. A first spring piece 10 is provided above each exhaust port 6. One side of the first spring piece 10 is fixedly connected to the capsule 5. The first spring piece 10 fits tightly with the upper side of the capsule 5 under its own elastic force. The diameter of the first spring piece 10 is larger than the diameter of the exhaust port 6. When the capsule 5 is squeezed, the gas inside the capsule 5 can be discharged under its own pressure. The first spring piece 10 is pushed open so that the first spring piece 10 overcomes its own elastic force to produce elastic deformation, so that the gas inside the capsule 5 can be discharged smoothly. When the capsule 5 is stretched, because the diameter of the first spring piece 10 is larger than the diameter of the exhaust port 6, the outside air cannot push the first spring piece 10 open and enter the interior of the capsule 5 through the exhaust port 6. When the capsule 5 is not squeezed, the first spring piece 10 fits with the upper end surface of the capsule 5 under the action of its own elastic force, so that the exhaust port 6 can remain sealed, so that the exhaust port 6 forms a one-way air outlet.

[0041] The side of the first spring piece 10 away from the axis of the buffer rod 2 is fixedly connected to the sac body 5. When the air inside the sac body 5 pushes open the first spring piece 10, the side of the first spring piece 10 close to the scraper ring 8 will be separated from the sac body 5 first, and the air inside the sac body 5 will be blown toward the scraper ring 8 first, which can improve the cleaning effect of the scraper ring 8.

[0042] A second spring piece 11 is provided on the inner side of the air intake pipe 7, one side of the second spring piece 11 is fixedly connected to the inner wall of the sac body 5, and the second spring piece 11 fits tightly with the inner wall of the sac body 5 under the action of its own elastic force, and the diameter of the second spring piece 11 is larger than the diameter of the air intake pipe 7. When the sac body 5 is stretched, the external air can push the second spring piece 11 open, so that the second spring piece 11 overcomes its own elastic force and smoothly enters the interior of the sac body 5. When the sac body 5 is compressed, the air inside the sac body 5 cannot deform the second spring piece 11, and cannot be discharged through the air intake pipe 7. When the sac body 5 is not compressed, the second spring piece 11 fits with the air intake pipe 7 under the action of its own elastic force, so that the air intake pipe 7 forms a one-way air intake.

[0043] Embodiment three:

[0044] On the basis of the second embodiment, in order to increase the buffering effect, a plurality of convex rings are arranged on the outer ring surface and the inner ring surface of the sac body 5, and annular grooves 9 matching the convex rings are arranged on the groove walls of the sink groove 3 and the outer side surfaces of the buffer rod 2. When the sac body 5 is stretched or compressed, the convex rings on the sac body 5 will squeeze and collide with the groove walls of different annular grooves 9, thereby playing an auxiliary buffering role and increasing the buffering effect.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A shock absorbing structure for a front fork of an electric vehicle, characterized in that: include: An outer sleeve (1), the outer sleeve (1) being cylindrical with one end open, and a sink groove (3) being provided at the opening of the outer sleeve (1); A buffer rod (2), the buffer rod (2) being coaxially mounted inside the outer sleeve (1) and sliding along the axial direction of the outer sleeve (1), and a buffer assembly being connected between the buffer rod (2) and the outer sleeve (1); An oil seal (4), the oil seal (4) being installed inside the sink (3); A bladder body (5), the bladder body (5) being mounted on the oil seal (4), and a plurality of one-way air outlets (6) being provided on the upper side of the bladder body (5), an air intake pipe (7) being provided on the side of the bladder body (5) for one-way air intake, and a through hole corresponding to the air intake pipe (7) being provided on the side of the outer sleeve (1); A scraper ring (8), the scraper ring (8) being mounted on the upper side of the capsule body (5); When the buffer rod (2) slides toward the inside of the outer sleeve (1), the scraper ring (8) scrapes off the dust attached to the outside of the buffer rod (2), and at the same time the capsule (5) is compressed, and the air inside the capsule (5) is blown out through the exhaust port (6), thereby cleaning the dust scraped off by the scraper ring (8); When the buffer rod (2) slides toward the outside of the outer sleeve (1), the bladder (5) is stretched, and at this time, external air enters the interior of the bladder (5) through the air inlet pipe (7); The capsule (5) is cylindrical in shape, and a plurality of convex rings are provided on the outer annular surface and the inner annular surface of the capsule (5); An annular groove (9) adapted to the convex ring is provided on the groove wall of the sink groove (3) and on the outer side surface of the buffer rod (2); The plurality of exhaust ports (6) are evenly distributed on the capsule (5) along the circumference of the capsule (5), and a first elastic sheet (10) is provided above each exhaust port (6), one side of the first elastic sheet (10) is fixedly connected to the capsule (5), and the first elastic sheet (10) is tightly fitted to the upper side of the capsule (5) under the action of its own elastic force; A second spring sheet (11) is provided on the inner side of the air inlet pipe (7), one side of the second spring sheet (11) is fixedly connected to the inner side wall of the capsule (5), and the second spring sheet (11) is tightly fitted to the inner side wall of the capsule (5) under the action of its own elastic force.

2. The electric vehicle front fork shock absorbing structure according to claim 1, characterized in that: The scraper ring (8) has a cross-sectional shape of a right-angled triangle, and a longer right-angled side of the scraper ring (8) fits in with the buffer rod (2).

3. The electric vehicle front fork shock absorbing structure according to claim 1, characterized in that: The side of the first elastic sheet (10) away from the axis of the buffer rod (2) is fixedly connected to the capsule (5).

4. The electric vehicle front fork shock absorbing structure according to claim 1, characterized in that: The buffer rod (2) is hollow, and the interior of the buffer rod (2) is connected to a mounting rod (13) via a spring (12); the lower end of the mounting rod (13) passes through the buffer rod (2) and extends to the interior of the outer sleeve (1); the mounting rod (13) is meshedly connected to a bolt (14) via a threaded opening provided on its lower end surface; the threaded column of the bolt (14) extends to the interior of the outer sleeve (1) via a through hole provided on the outer sleeve (1).

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