A shock-absorbing nitrogen spring for off-road electric vehicles

Abstract

The invention discloses a shock-absorbing nitrogen spring for off-road electric vehicles, including a cylinder body, a piston seat is arranged in the cylinder body, the outer side of the piston seat is movably connected through a piston seat anti-wear ring, a piston column passes through the cylinder body opening and is movably connected to the cylinder body, and a piston sealing sleeve is arranged on the top of the cylinder body. In the shock-absorbing nitrogen spring for off-road electric vehicles, a scraper is arranged at the connection between the opening on the upper surface of the cylinder body and the piston column, which improves the sealing performance of the piston sealing sleeve. The cylinder body, the piston column, the air valve and the connecting rod are on the same axis line, the structure is compact and stable, the space is small, the design is novel, and the use is convenient. At the same time, the shock-absorbing effect is retained, the comfort is increased, and the damage to the off-road electric vehicle is reduced. The pressure of the electric vehicle can be adjusted back and forth through the air valve to play a balancing role, which can meet the requirements of outdoor off-road, and can be inflated and deflated at any time. The piston sealing sleeve can effectively prevent dust from contacting the nitrogen spring, which is conducive to increasing the service life of the shock absorber.

Description

Technical Field

[0001] The invention relates to the technical field of nitrogen springs, in particular to a shock-absorbing nitrogen spring for off-road electric vehicles. Background Art

[0002] The nitrogen spring is a new type of elastic component that uses high-pressure nitrogen as the working medium. It has tasks that are difficult to accomplish with conventional elastic components such as metal springs, rubber and air cushions. It is a new generation of the most ideal elastic component with flexible performance. Nitrogen springs play an important role in shock absorption and balance in off-road electric vehicles. However, the nitrogen springs currently on the market have the problem of insufficient air filling in the cylinder during circulation, which may cause the piston rod to slide down instantly and damage the internal structure of the nitrogen spring, resulting in poor shock absorption and reduced comfort. In addition, the sealing components often have poor sealing, resulting in a short service life of the nitrogen spring. In view of these defects, it is necessary to design a shock-absorbing nitrogen spring for off-road electric vehicles. Summary of the invention

[0003] The object of the present invention is to provide a shock-absorbing nitrogen spring for off-road electric vehicles. A scraper is provided at the connection between the opening on the upper surface of the cylinder body and the piston column. When the piston column performs piston movement, dust or oil on the piston column is cleaned, thereby improving the sealing performance of the piston sealing sleeve. The sealing effect of the nitrogen spring is better when the piston sealing sleeve is cooperated with the piston sealing sleeve. A piston sealing sleeve is provided at the top of the cylinder body. The piston seat and the piston sealing sleeve fix the piston column inside the cylinder body and are movably connected with the cylinder body. At the same time, the piston seat can buffer the rise and fall of the piston column, which is beneficial to protecting the piston column and extending the service life of the piston column. The cylinder body, the piston column, the air valve and the connecting rod are on the same axial line, with a compact and stable structure, small space occupation, novel design and easy use. At the same time, the shock-absorbing effect is retained, the comfort is increased, and the damage to the off-road electric vehicle is reduced. The pressure of the electric vehicle can be adjusted back and forth by the air valve to play a balancing role, which can meet the requirements of outdoor off-road and can be inflated and deflated at any time. The piston sealing sleeve can effectively prevent dust from contacting the nitrogen spring, which is beneficial to increasing the service life of the shock absorber and can solve the problems in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A shock-absorbing nitrogen spring for an off-road electric vehicle comprises a cylinder body, a piston seat is arranged in the cylinder body, the outer side of the piston seat is movably connected via a piston seat anti-wear ring, the inner wall of the piston seat is interference-connected with one end of a piston column, an opening is arranged on the upper surface of the cylinder body, the piston column penetrates through the cylinder body opening and is movably connected with the cylinder body, and a piston sealing sleeve is arranged on the top of the cylinder body;

[0006] The piston sealing sleeve is respectively composed of a dust cover, an O-ring, a positioning ring, a piston sleeve and a piston column sealing ring. The piston sleeve is sleeved on the outer wall of one end of the piston column and is movably connected thereto. The outer wall of the upper end of the piston sleeve is sleeved with a dust cover. The positioning ring is sleeved on the lower end of the dust cover and is fixedly connected thereto. The O-ring is sleeved on the lower end of the positioning ring and is fixedly connected thereto. The piston column sealing ring is fixed to the bottom end of the piston sleeve and is fixedly connected thereto.

[0007] A piston rod interface is arranged at the center of the top end of the piston rod, and an air valve is arranged in the piston rod. One end of the air valve is fixedly connected to the connecting rod by a bolt, and the other end of the air valve penetrates the piston seat and is fixedly connected to the port plug.

[0008] Preferably, the cylinder body, piston column, air valve and connecting rod are on the same axis, and the movement directions of the piston column, air valve and connecting rod are consistent with the direction of the axis.

[0009] Preferably, the cylinder body is a hollow cylinder with an opening at the center of the upper surface, and a scraper is provided at the connection between the opening and the piston column.

[0010] Preferably, a piston column guide is provided at the connection between the piston sealing sleeve and the piston column, and the piston column guide is fixedly connected to the inner wall of the piston sealing sleeve.

[0011] Preferably, the inner wall of the piston column interface is provided with a threaded portion, and the bottom end of the piston column interface is fixedly connected to one end of the connecting rod.

[0012] Preferably, the piston seat and the piston sealing sleeve fix the piston column inside the cylinder body and are movably connected to the cylinder body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The shock-absorbing nitrogen spring for off-road electric vehicles is provided with a scraper at the connection between the opening on the upper surface of the cylinder body and the piston column. The dust or oil on the piston column is cleaned when the piston column moves, thereby improving the sealing performance of the piston sealing sleeve. The sealing effect of the nitrogen spring is better when the piston sealing sleeve is cooperated with the piston sealing sleeve. A piston sealing sleeve is provided on the top of the cylinder body. The piston seat and the piston sealing sleeve fix the piston column inside the cylinder body and are movably connected to the cylinder body. At the same time, the piston seat can buffer the rise and fall of the piston column, which is beneficial to protect the piston column and extend the service life of the piston column.

[0015] 2. The shock-absorbing nitrogen spring for the off-road electric vehicle has a threaded portion on the inner wall of the piston column interface, and the bottom end of the piston column interface is fixedly connected to one end of the connecting rod, which is convenient for the installation and disassembly of the shock-absorbing nitrogen spring. The cylinder body, piston column, air valve and connecting rod are on the same axis line, with a compact and stable structure, small space occupation, novel design, and easy use. At the same time, the shock-absorbing effect is retained, the comfort is increased, and the damage to the off-road electric vehicle is reduced.

[0016] 3. The shock-absorbing nitrogen spring for this off-road electric vehicle can adjust the pressure of the electric vehicle back and forth through the air valve to play a balancing role. It can meet the requirements of outdoor off-road and can be inflated and deflated at any time. The piston sealing sleeve can effectively prevent dust from contacting the nitrogen spring, which is beneficial to increase the service life of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a sectional front view of the overall structure of the present invention;

[0019] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0020] Figure 4 is a cross-sectional view of the piston sealing sleeve of the present invention;

[0021] Figure 5 It is a schematic diagram of the local structure of the present invention;

[0022] Figure 6 It is a bottom view of the overall structure of the present invention.

[0023] In the figure: 1. cylinder body; 2. piston seat; 3. piston seat anti-wear ring; 4. piston column; 5. piston sealing sleeve; 6. dust cover; 7. O-ring; 8. positioning ring; 9. piston sleeve; 10. piston column sealing ring; 11. piston column interface; 12. air valve; 13. connecting rod; 14. port plug; 15. piston column guide. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-6A shock-absorbing nitrogen spring for off-road electric vehicles includes a cylinder body 1, a piston seat 2 is arranged in the cylinder body 1, the outer side of the piston seat 2 is movably connected through a piston seat anti-wear ring 3, the inner wall of the piston seat 2 is interference-connected with one end of a piston column 4, an opening is arranged on the upper surface of the cylinder body 1, the piston column 4 passes through the opening of the cylinder body 1 and is movably connected with the cylinder body 1, the cylinder body 1 is a hollow cylinder with an opening in the center of the upper surface, a scraper is arranged at the connection between the opening and the piston column 4, the dust or oil on the piston column 4 is cleaned when the piston column 4 performs piston movement, the sealing performance of the piston sealing sleeve 5 is improved, and the sealing effect of the nitrogen spring is better when the piston sealing sleeve 5 is cooperated with the piston sealing sleeve 5, and the top of the cylinder body 1 is arranged There is a piston sealing sleeve 5, and a piston column guide 15 is provided at the connection between the piston sealing sleeve 5 and the piston column 4 to ensure that the movement direction of the piston column 4 is on the center line. The piston column guide 15 is fixedly connected to the inner wall of the piston sealing sleeve 5. The piston seat 2 and the piston sealing sleeve 5 fix the piston column 4 inside the cylinder body 1 and are movably connected to the cylinder body 1. At the same time, the piston seat 2 can buffer the rise and fall of the piston column 4, which is beneficial to protect the piston column 4 and extend the service life of the piston column 4. The piston sealing sleeve 5 is respectively composed of a dust cover 6, an O-ring 7, a positioning ring 8, a piston sleeve 9 and a piston column sealing ring 10. The piston sleeve 9 is sleeved on the piston column 4 is movably connected to the outer wall of one end of the piston sleeve 9, a dust cover 6 is sleeved on the outer wall of the upper end of the piston sleeve 9, a positioning ring 8 is sleeved on the lower end of the dust cover 6 and is fixedly connected to it, an O-ring 7 is sleeved on the lower end of the positioning ring 8 and is fixedly connected to it, a piston column sealing ring 10 is fixed to the bottom end of the piston sleeve 9 and is fixedly connected to it, a piston column interface 11 is provided at the top center of the piston column 4, a threaded portion is provided on the inner wall of the piston column interface 11, and the bottom end of the piston column interface 11 is fixedly connected to one end of the connecting rod 13 to facilitate the installation and disassembly of the shock-absorbing nitrogen spring, an air valve 12 is provided in the piston column 4, and one end of the air valve 12 is fixedly connected to the connecting rod 13 by bolts, the cylinder body 1, the piston column 4 , the air valve 12 and the connecting rod 13 are on the same axis, and the movement direction of the piston column 4, the air valve 12 and the connecting rod 13 is consistent with the axis direction. The structure is compact and stable, occupies a small space, has a novel design, and is easy to use. At the same time, the shock absorption effect is retained, the comfort is increased, and the damage to the off-road electric vehicle is reduced. The other end of the air valve 12 passes through the piston seat 2 and is fixedly connected with the port plug 14. The pressure of the electric vehicle can be adjusted back and forth through the air valve 12 to play a balancing role, which can meet the requirements of outdoor off-road and can be inflated and deflated at any time. The piston sealing sleeve 5 can effectively prevent dust from contacting the nitrogen spring, which is beneficial to increase the service life of the shock absorber.

[0026] In summary, in the shock-absorbing nitrogen spring for off-road electric vehicles, a scraper is provided at the connection between the opening on the upper surface of the cylinder body 1 and the piston column 4. When the piston column 4 performs piston movement, the dust or oil on the piston column 4 is cleaned, thereby improving the sealing performance of the piston sealing sleeve 5. The sealing effect of the nitrogen spring is better when the piston sealing sleeve 5 is cooperated with the piston sealing sleeve 5. A piston sealing sleeve 5 is provided at the top of the cylinder body 1. The piston seat 2 and the piston sealing sleeve 5 fix the piston column 4 inside the cylinder body 1 and are movably connected to the cylinder body 1. At the same time, the piston seat 2 can buffer the rise and fall of the piston column 4, which is beneficial to protect the piston column 4 and prolong the service life of the piston column 4. The piston column interface 1 1 The inner wall is provided with a threaded portion, and the bottom end of the piston column interface 11 is fixedly connected to one end of the connecting rod 13, which is convenient for the installation and removal of the shock-absorbing nitrogen spring. The cylinder body 1, the piston column 4, the air valve 12 and the connecting rod 13 are on the same axis line, with a compact and stable structure, small space occupation, novel design, and easy use. At the same time, the shock absorption effect is retained, the comfort is increased, and the damage to the off-road electric vehicle is reduced. The pressure of the electric vehicle can be adjusted back and forth through the air valve 12 to play a balancing role, which can meet the requirements of outdoor off-road and can be inflated and deflated at any time. The piston sealing sleeve 5 can effectively prevent dust from contacting the nitrogen spring, which is beneficial to increase the service life of the shock absorber.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing nitrogen spring for an off-road electric vehicle, comprising a cylinder (1), characterized in that: The cylinder body (1) is provided with a piston seat (2), the outer side of the piston seat (2) is movably connected via a piston seat anti-wear ring (3), the inner wall of the piston seat (2) is interference-connected with one end of a piston rod (4), the upper surface of the cylinder body (1) is provided with an opening, the piston rod (4) penetrates the opening of the cylinder body (1) and is movably connected with the cylinder body (1), and a piston sealing sleeve (5) is provided at the top of the cylinder body (1); The piston sealing sleeve (5) is respectively composed of a dust cover (6), an O-ring (7), a positioning ring (8), a piston sleeve (9) and a piston column sealing ring (10); the piston sleeve (9) is sleeved on the outer wall of one end of the piston column (4) and is movably connected thereto; the outer wall of the upper end of the piston sleeve (9) is sleeved with a dust cover (6); the positioning ring (8) is sleeved on the lower end of the dust cover (6) and is fixedly connected thereto; the O-ring (7) is sleeved on the lower end of the positioning ring (8) and is fixedly connected thereto; and the piston column sealing ring (10) is fixedly connected to the bottom end of the piston sleeve (9) and is fixedly connected thereto; A piston rod interface (11) is provided at the center of the top end of the piston rod (4), and an air valve (12) is provided inside the piston rod (4). One end of the air valve (12) is fixedly connected to a connecting rod (13) via a bolt, and the other end of the air valve (12) passes through the piston seat (2) and is fixedly connected to a port plug (14); The cylinder body (1), the piston column (4), the air valve (12) and the connecting rod (13) are on the same axis, and the movement direction of the piston column (4), the air valve (12) and the connecting rod (13) is consistent with the direction of the axis; The cylinder body (1) is a hollow cylinder with an opening at the center of the upper surface, and a scraper is provided at the connection between the opening and the piston column (4); A piston column guide (15) is provided at the connection between the piston sealing sleeve (5) and the piston column (4), and the piston column guide (15) is fixedly connected to the inner wall of the piston sealing sleeve (5); The inner wall of the piston column interface (11) is provided with a threaded portion, and the bottom end of the piston column interface (11) is fixedly connected to one end of the connecting rod (13); The piston seat (2) and the piston sealing sleeve (5) fix the piston column (4) inside the cylinder body (1) and are movably connected to the cylinder body (1).

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