CN111284563B - Automobile collision protection device - Google Patents
Automobile collision protection device Download PDFInfo
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- CN111284563B CN111284563B CN202010195727.5A CN202010195727A CN111284563B CN 111284563 B CN111284563 B CN 111284563B CN 202010195727 A CN202010195727 A CN 202010195727A CN 111284563 B CN111284563 B CN 111284563B
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- cylinder body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/32—Fluid shock absorbers, e.g. with coaxial coil springs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses an automobile collision protection device, which comprises a piston cylinder assembly, wherein the piston cylinder assembly comprises a main cylinder body, an auxiliary cylinder body, a main piston and an auxiliary piston, the main cylinder body is connected with the auxiliary cylinder body, the inner cavity of the main cylinder body is filled with hydraulic oil, the inner cavity of the auxiliary cylinder body is filled with working gas, the inner cavity of the main cylinder body is communicated with the inner cavity of the auxiliary cylinder body through a damping hole, the auxiliary cylinder body can be connected with an automobile front longitudinal beam, and the main cylinder body is positioned on one side of the auxiliary cylinder body, which is close to; the inner walls of the main cylinder body and the auxiliary cylinder body are respectively provided with a lining structure layer, and the lining structure layers are made of iron-nickel hard alloy materials. When an automobile collides with an obstacle, a piston rod close to a front bumper firstly contacts the obstacle, the piston rod transmits energy to a main piston, the main piston compresses hydraulic oil, the hydraulic oil enters an inner cavity of an auxiliary cylinder body through a damping hole in a buffering mode, then the energy is transmitted to an auxiliary piston, the auxiliary piston compresses working gas to play a role in further buffering, and finally energy absorption is completed.
Description
Technical Field
The invention relates to the technical field of automobile collision safety protection equipment and peripheral supporting facilities thereof, in particular to an automobile collision protection device.
Background
With the development of the automobile industry, more and more automobiles enter common families, particularly, domestic private automobiles grow explosively in recent years, and various automobile accidents correspondingly grow rapidly, so that the safety of the automobiles is more and more emphasized by people and becomes one of the most important factors considered when the people buy the automobiles. Currently, the collision safety protection devices for automobiles are roughly divided into three types: one is that the front and rear bumpers of the car comprise a car head and a car tail, and when the car is in collision, the deformation of the front and rear bumpers, the car head and the car tail is utilized to absorb collision energy; the second is a safety belt, which prevents the driver and passengers from generating large displacement when the automobile collides; the third is a safety air bag which isolates the collision between the driver and the vehicle body, and has the defect that when the collision energy of the vehicle is huge, the bumper, the head or the tail of the vehicle cannot completely absorb the collision energy, so that the vehicle can be seriously deformed, and the life safety of the driver and the passenger can be seriously threatened.
The front longitudinal beam of the automobile is a main energy-absorbing component in the front collision process, but is limited by the design of the front structural model and the like, the length of the front longitudinal beam is limited, so that the automobile type meeting the requirements of collision laws and regulations can meet the greater casualty risk of passengers in the collision at higher speed, and particularly for some light and mini-sized automobiles, the front space in the automobile is very limited, and the good collision safety effect is difficult to achieve.
Therefore, how to improve the front collision safety performance of the automobile on the premise that the energy absorption space at the front part of the automobile is limited becomes an urgent solution for those skilled in the art.
Disclosure of Invention
The invention aims to provide an automobile collision protection device, which aims to solve the problems in the prior art and improve the front collision safety performance of an automobile on the premise of limited energy absorption space at the front part of the automobile.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an automobile collision protection device, which comprises a piston cylinder assembly, wherein the piston cylinder assembly comprises a main cylinder body, an auxiliary cylinder body, a main piston and an auxiliary piston, the main cylinder body is connected with the auxiliary cylinder body, the main piston is slidably arranged in the inner cavity of the main cylinder body, the auxiliary piston is slidably arranged in the inner cavity of the auxiliary cylinder body, the inner cavity of the main cylinder body is filled with hydraulic oil, the inner cavity of the auxiliary cylinder body is filled with working gas, the inner cavity of the main cylinder body is communicated with the inner cavity of the auxiliary cylinder body through a damping hole, the auxiliary piston is arranged close to the damping hole, the auxiliary cylinder body can be connected with a front longitudinal beam of the automobile, the main cylinder body is positioned on one side of the auxiliary cylinder body close to the front bumper of the automobile, the main piston is positioned at one end of the main cylinder body far away from the auxiliary cylinder body, the main piston is connected with a piston rod, and the piston rod is arranged close to the front bumper of the automobile; the inner walls of the main cylinder body and the auxiliary cylinder body are provided with lining structure layers, and the lining structure layers are made of iron-nickel hard alloy materials.
Preferably, the secondary cylinder block comprises first and second secondary cylinder blocks, the secondary pistons comprise first and second secondary pistons, the first slave piston being slidably disposed in the internal cavity of the first slave cylinder block, the second slave piston being slidably disposed in the internal cavity of the second slave cylinder block, working gas is filled in the inner cavity of the first auxiliary cylinder body and the inner cavity of the second auxiliary cylinder body, the inner cavity of the first auxiliary cylinder body is communicated with the inner cavity of the main cylinder body through a first damping hole, the inner cavity of the second auxiliary cylinder body is communicated with the inner cavity of the main cylinder body through a second damping hole, the diameter of the first damping hole is larger than that of the second damping hole, the inner cavity of the first auxiliary cylinder body is communicated with the inner cavity of the second auxiliary cylinder body through a connecting hole, and the connecting hole is located at one end, far away from the main cylinder body, of the auxiliary cylinder body.
Preferably, the number of the second auxiliary cylinder bodies is six, and the six second auxiliary cylinder bodies are circumferentially and uniformly distributed around the axis of the first auxiliary cylinder body.
Preferably, the axial section of the connecting hole is V-shaped.
Preferably, the automobile collision protection device further comprises a positioning sleeve, the positioning sleeve is sleeved outside the auxiliary cylinder body, the positioning sleeve is clamped with the auxiliary cylinder body, and the positioning sleeve can be connected with the automobile front longitudinal beam.
Preferably, the positioning sleeve is provided with a positioning hole, and the positioning sleeve can be connected with the automobile front longitudinal beam through the positioning hole.
Preferably, a threaded hole is formed in one end, far away from the main piston, of the piston rod.
Preferably, the automobile collision protection device further comprises a cylinder end cover, the cylinder end cover is detachably connected with the main cylinder, the piston rod is slidably connected with the cylinder end cover and extends out of the cylinder end cover, a sealing element is arranged between the cylinder end cover and the piston rod, and the diameter of the piston rod is smaller than that of the main piston.
Compared with the prior art, the invention has the following technical effects: the automobile collision protection device comprises a piston cylinder assembly, wherein the piston cylinder assembly comprises a main cylinder body, an auxiliary cylinder body, a main piston and an auxiliary piston, the main cylinder body is connected with the auxiliary cylinder body, the main piston is slidably arranged in an inner cavity of the main cylinder body, the auxiliary piston is slidably arranged in an inner cavity of the auxiliary cylinder body, the inner cavity of the main cylinder body is filled with hydraulic oil, the inner cavity of the auxiliary cylinder body is filled with working gas, the inner cavity of the main cylinder body is communicated with the inner cavity of the auxiliary cylinder body through a damping hole, the auxiliary piston is arranged close to the damping hole, the auxiliary cylinder body can be connected with an automobile front longitudinal beam, the main cylinder body is arranged on one side of the auxiliary cylinder body close to an automobile front bumper, the main piston is arranged at one end of the; the inner walls of the main cylinder body and the auxiliary cylinder body are respectively provided with a lining structure layer, and the lining structure layers are made of iron-nickel hard alloy materials. The automobile collision protection device is arranged between an automobile front longitudinal beam and a front bumper, when an automobile collides with an obstacle, a piston rod close to the front bumper firstly contacts the obstacle, the piston rod transmits energy to a main piston, the main piston compresses hydraulic oil, the hydraulic oil enters an inner cavity of an auxiliary cylinder body through a damping hole in a buffering mode, then the energy is transmitted to an auxiliary piston, the auxiliary piston compresses working gas to play a role in further buffering, and finally energy absorption is completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a cutaway schematic view of an automotive crash protection apparatus of the present invention;
FIG. 2 is a schematic end view of a secondary cylinder of the vehicle crash protection apparatus of the present invention;
the piston type cylinder comprises a main cylinder body 1, a main piston 2, a lining structure layer 3, a first auxiliary cylinder body 4, a second auxiliary cylinder body 5, a first auxiliary piston 6, a second auxiliary piston 7, a first damping hole 8, a second damping hole 9, a connecting hole 10, a positioning sleeve 11, a positioning hole 12, a cylinder end cover 13 and a piston rod 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an automobile collision protection device, which aims to solve the problems in the prior art and improve the front collision safety performance of an automobile on the premise of limited energy absorption space at the front part of the automobile.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-2, fig. 1 is a sectional view of the collision protection apparatus for a vehicle according to the present invention, and fig. 2 is a schematic end view of an auxiliary cylinder of the collision protection apparatus for a vehicle according to the present invention.
The invention provides an automobile collision protection device, which comprises a piston cylinder assembly, wherein the piston cylinder assembly comprises a main cylinder body 1, an auxiliary cylinder body, a main piston 2 and an auxiliary piston, the main cylinder body 1 is connected with the auxiliary cylinder body, the main piston 2 is slidably arranged in an inner cavity of the main cylinder body 1, the auxiliary piston is slidably arranged in an inner cavity of the auxiliary cylinder body, the inner cavity of the main cylinder body 1 is filled with hydraulic oil, the inner cavity of the auxiliary cylinder body is filled with working gas, the inner cavity of the main cylinder body 1 is communicated with the inner cavity of the auxiliary cylinder body through a damping hole, the auxiliary piston is arranged close to the damping hole, the auxiliary cylinder body can be connected with an automobile front longitudinal beam, the main cylinder body 1 is positioned on one side of the auxiliary cylinder body close to an automobile front bumper, the main piston 2 is positioned at one end of the main cylinder; the inner walls of the main cylinder body 1 and the auxiliary cylinder body are both provided with a lining structure layer 3, and the lining structure layer 3 is made of iron-nickel hard alloy materials.
The automobile collision protection device is arranged between an automobile front longitudinal beam and a front bumper, when an automobile collides with an obstacle, a piston rod 14 close to the front bumper firstly contacts the obstacle, the piston rod 14 transmits energy to a main piston 2, the main piston 2 compresses hydraulic oil, the hydraulic oil enters an inner cavity of an auxiliary cylinder body through a damping hole in a buffering mode, then the energy is transmitted to the auxiliary piston, the auxiliary piston compresses working gas to play a role in further buffering, and finally energy absorption is completed, lining structure layers 3 are arranged inside the main cylinder body 1 and the auxiliary cylinder body, the lining structure layers 3 are made of iron-nickel hard alloy materials, the structural strength of the main cylinder body 1 and the auxiliary cylinder body is improved, and then the front collision safety performance of the automobile is improved. It should be noted here that the working gas may be air or other gas that is compressed and heated to a stable state, so as to ensure the safety of the vehicle collision protection device, and the selection of the working gas belongs to the conventional means of those skilled in the art, and will not be described herein again.
Specifically, the auxiliary cylinder body comprises a first auxiliary cylinder body 4 and a second auxiliary cylinder body 5, the auxiliary piston comprises a first auxiliary piston 6 and a second auxiliary piston 7, the first auxiliary piston 6 is slidably arranged in an inner cavity of the first auxiliary cylinder body 4, the second auxiliary piston 7 is slidably arranged in an inner cavity of the second auxiliary cylinder body 5, working gas is filled in the inner cavity of the first auxiliary cylinder body 4 and the inner cavity of the second auxiliary cylinder body 5, the inner cavity of the first auxiliary cylinder body 4 is communicated with the inner cavity of the main cylinder body 1 through a first damping hole 8, the inner cavity of the second auxiliary cylinder body 5 is communicated with the inner cavity of the main cylinder body 1 through a second damping hole 9, the diameter of the first damping hole 8 is larger than that of the second damping hole 9, the inner cavity of the first auxiliary cylinder body 4 is communicated with the inner cavity of the second auxiliary cylinder body 5 through a connecting hole 10, and the connecting hole 10.
When an automobile collides with an obstacle, a piston rod 14 close to a front bumper firstly contacts the obstacle, the piston rod 14 transmits energy to a main piston 2, the main piston 2 compresses hydraulic oil, the hydraulic oil enters a first auxiliary cylinder body 4 through a first damping hole 8 in a buffering mode, meanwhile, the hydraulic oil enters a second auxiliary cylinder body 5 through a second damping hole 9, the diameter of the first damping hole 8 is larger than that of the second damping hole 9, therefore, the movement speed of a first auxiliary piston 6 under the action of the hydraulic oil pressure is higher than that of a second auxiliary piston 7, namely, pressure difference is generated between the first auxiliary cylinder body 4 and the six second auxiliary cylinder bodies 5, firstly, the first auxiliary piston 6 compresses working gas in the first auxiliary cylinder body 4, and the compressed working gas simultaneously enters the six second auxiliary cylinder bodies 5 through a connecting hole 10, so that the six second auxiliary pistons 7 are blocked in movement to form primary buffering, then, as hydraulic oil in the main cylinder body 1 continuously enters the six second auxiliary cylinder bodies 5, the six blocked second auxiliary pistons 7 continuously move towards the bottoms of the second auxiliary cylinder bodies 5, compressed working gas in the six second auxiliary cylinder bodies 5 gushes into the first auxiliary cylinder body 4, the first auxiliary piston 6 is blocked to move, secondary buffering is formed, energy absorption is finally completed, and the temperature of the working gas is increased.
In the embodiment, the number of the second auxiliary cylinders 5 is six, and the six second auxiliary cylinders 5 are uniformly distributed in the circumferential direction around the axis of the first auxiliary cylinder 4, so that the stress uniformity of the first auxiliary piston 6 is improved.
The axial cross section of the connecting hole 10 is V-shaped, the moving path of working gas is prolonged, the first auxiliary cylinder body 4 and the second auxiliary cylinder body 5 are prevented from being rapidly communicated, and the automobile collision protection device can play a role.
More specifically, the automobile collision protection device further comprises a positioning sleeve 11, the positioning sleeve 11 is sleeved outside the auxiliary cylinder body, the positioning sleeve 11 is clamped with the auxiliary cylinder body, the main cylinder body 1 extends out of the positioning sleeve 11, the positioning sleeve 11 can play a role in fixing the main cylinder body 1 and the auxiliary cylinder body, the positioning sleeve 11 can be connected with an automobile front longitudinal beam, and the auxiliary cylinder body is conveniently connected with the automobile front longitudinal beam.
In addition, the positioning sleeve 11 is provided with a positioning hole 12, and the positioning sleeve 11 can be connected with the automobile front longitudinal beam through the positioning hole 12. Bolted connection makes things convenient for the dismouting, improves the simple operation nature.
Further, one end of the piston rod 14, which is far away from the main piston 2, is provided with a threaded hole, and the threaded hole facilitates fixing of the piston rod 14.
Furthermore, the automobile collision protection device further comprises a cylinder end cover 13, the cylinder end cover 13 is detachably connected with the main cylinder 1, the piston rod 14 is slidably connected with the cylinder end cover 13 and extends out of the cylinder end cover 13, a sealing element is arranged between the cylinder end cover 13 and the piston rod 14, the diameter of the piston rod 14 is smaller than that of the main piston 2, the cylinder end cover 13 is arranged to limit the limit position of the main piston 2, the main piston 2 is prevented from slipping and misplacing, and the automobile collision protection device is ensured to play a role.
The automobile collision protection device comprises a main piston 2, a first auxiliary piston 6 and six second auxiliary pistons 7, when an automobile collides with an obstacle, a piston rod 14 close to a front bumper firstly contacts the obstacle, the piston rod 14 transmits energy to the main piston 2, the main piston 2 compresses hydraulic oil, the hydraulic oil enters a first auxiliary cylinder 4 in a buffering mode through a first damping hole 8, meanwhile, the hydraulic oil enters a second auxiliary cylinder 5 through a second damping hole 9, the diameter of the first damping hole 8 is larger than that of the second damping hole 9, the speed of the hydraulic oil entering the first auxiliary cylinder 4 is higher than that of the hydraulic oil entering the second auxiliary cylinder 5, therefore, the first auxiliary piston 6 rapidly moves towards the bottom of the first auxiliary cylinder 4, compressed working gas is pressurized into the six second auxiliary cylinders 5, the movement of the six second auxiliary pistons 7 towards the bottom is blocked, and primary buffering is formed, along with hydraulic oil constantly gets into the vice cylinder body 5 of second in the main cylinder body 1, the vice piston 7 of second moves to the vice cylinder body 5 bottom of second, and the working gas that receives the compression in the vice cylinder body 5 of second gushes into again in the first vice cylinder body 4, and first vice piston 6 movement is obstructed, forms the second grade buffering, finally accomplishes energy absorption, and the working gas temperature rises. It should be noted that, all set up lining structure layer 3 on the inner wall of main cylinder body 1, first vice cylinder body 4, the vice cylinder body 5 of second, lining structure layer 3 is made by the iron-nickel carbide material, improves the structural strength of main cylinder body 1 and vice cylinder body, improves collision security performance before the car then.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. An automobile collision protection device is characterized in that: the piston cylinder assembly comprises a main cylinder body, an auxiliary cylinder body, a main piston and an auxiliary piston, wherein the main cylinder body is connected with the auxiliary cylinder body, the main piston is slidably arranged in an inner cavity of the main cylinder body, the auxiliary piston is slidably arranged in an inner cavity of the auxiliary cylinder body, hydraulic oil is filled in the inner cavity of the main cylinder body, working gas is filled in the inner cavity of the auxiliary cylinder body, the inner cavity of the main cylinder body is communicated with the inner cavity of the auxiliary cylinder body through a damping hole, the auxiliary piston is arranged close to the damping hole, the auxiliary cylinder body can be connected with a front longitudinal beam of an automobile, the main cylinder body is positioned on one side, close to a front bumper of the automobile, of the auxiliary cylinder body, the main piston is positioned at one end, far away from the auxiliary cylinder body, of the main cylinder body, the main piston is connected with; lining structure layers are arranged on the inner walls of the main cylinder body and the auxiliary cylinder body and are made of iron-nickel hard alloy materials;
the auxiliary cylinder body comprises a first auxiliary cylinder body and a second auxiliary cylinder body, the auxiliary piston comprises a first auxiliary piston and a second auxiliary piston, the first auxiliary piston can be arranged in the inner cavity of the first auxiliary cylinder body in a sliding mode, the second auxiliary piston can be arranged in the inner cavity of the second auxiliary cylinder body in a sliding mode, working gas is filled in the inner cavity of the first auxiliary cylinder body and the inner cavity of the second auxiliary cylinder body, the inner cavity of the first auxiliary cylinder body is communicated with the inner cavity of the main cylinder body through a first damping hole, the inner cavity of the second auxiliary cylinder body is communicated with the inner cavity of the main cylinder body through a second damping hole, the diameter of the first damping hole is larger than that of the second damping hole, the inner cavity of the first auxiliary cylinder body is communicated with the inner cavity of the second auxiliary cylinder body through a connecting hole, and the connecting hole is located, and the auxiliary cylinder.
2. The automobile collision protection apparatus according to claim 1, characterized in that: the quantity of the second pair of cylinder bodies is six, six the second pair of cylinder bodies winds the axis circumference equipartition of first pair of cylinder body.
3. The automobile collision protection apparatus according to claim 1, characterized in that: the axial section of the connecting hole is V-shaped.
4. The automobile collision protection apparatus according to claim 1, characterized in that: the automobile front longitudinal beam positioning device is characterized by further comprising a positioning sleeve, wherein the positioning sleeve is sleeved outside the auxiliary cylinder body and is clamped with the auxiliary cylinder body, and the positioning sleeve can be connected with an automobile front longitudinal beam.
5. The automobile collision protection apparatus according to claim 4, characterized in that: the positioning sleeve is provided with a positioning hole, and the positioning sleeve can be connected with the automobile front longitudinal beam through the positioning hole.
6. The automobile collision protection apparatus according to claim 1, characterized in that: and one end of the piston rod, which is far away from the main piston, is provided with a threaded hole.
7. The automobile collision protection apparatus according to claim 6, characterized in that: the cylinder body end cover is detachably connected with the main cylinder body, the piston rod can be slidably connected with the cylinder body end cover and extends out of the cylinder body end cover, a sealing element is arranged between the cylinder body end cover and the piston rod, and the diameter of the piston rod is smaller than that of the main piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195727.5A CN111284563B (en) | 2020-03-19 | 2020-03-19 | Automobile collision protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195727.5A CN111284563B (en) | 2020-03-19 | 2020-03-19 | Automobile collision protection device |
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| Publication Number | Publication Date |
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| CN111284563A CN111284563A (en) | 2020-06-16 |
| CN111284563B true CN111284563B (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010195727.5A Active CN111284563B (en) | 2020-03-19 | 2020-03-19 | Automobile collision protection device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801087A (en) * | 1970-08-04 | 1974-04-02 | Nissan Motor | Hydropneumatic impact absorptive device |
| JPS4977320A (en) * | 1972-12-01 | 1974-07-25 | ||
| US3934912A (en) * | 1973-07-23 | 1976-01-27 | Nissan Motor Company Limited | Vehicle energy-absorbing system with adjustable absorption capacity |
| EP0009112A2 (en) * | 1978-09-21 | 1980-04-02 | Boge GmbH | Hydropneumatic shock absorber with two telescopic tubes, particularly for motor vehicles |
| JPH01250632A (en) * | 1988-03-30 | 1989-10-05 | Sumitomo Precision Prod Co Ltd | Aircraft shock absorber |
| JPH04191540A (en) * | 1990-11-27 | 1992-07-09 | Sanwa Tekki Corp | Vertical earthquake-proof device |
| CN2392698Y (en) * | 1999-09-26 | 2000-08-23 | 段吉兴 | Face-collision bufferning protector for automobile |
| CN103982654A (en) * | 2014-05-30 | 2014-08-13 | 四川中物泰沃新材料有限公司 | Anti-corrosion wear-proof hydraulic cylinder and manufacturing method thereof |
| CN110316125A (en) * | 2019-06-26 | 2019-10-11 | 江苏卡威汽车工业集团股份有限公司 | A kind of bumper of mis-collision preventing and resistance to temporary impact |
-
2020
- 2020-03-19 CN CN202010195727.5A patent/CN111284563B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801087A (en) * | 1970-08-04 | 1974-04-02 | Nissan Motor | Hydropneumatic impact absorptive device |
| JPS4977320A (en) * | 1972-12-01 | 1974-07-25 | ||
| US3934912A (en) * | 1973-07-23 | 1976-01-27 | Nissan Motor Company Limited | Vehicle energy-absorbing system with adjustable absorption capacity |
| EP0009112A2 (en) * | 1978-09-21 | 1980-04-02 | Boge GmbH | Hydropneumatic shock absorber with two telescopic tubes, particularly for motor vehicles |
| JPH01250632A (en) * | 1988-03-30 | 1989-10-05 | Sumitomo Precision Prod Co Ltd | Aircraft shock absorber |
| JPH04191540A (en) * | 1990-11-27 | 1992-07-09 | Sanwa Tekki Corp | Vertical earthquake-proof device |
| CN2392698Y (en) * | 1999-09-26 | 2000-08-23 | 段吉兴 | Face-collision bufferning protector for automobile |
| CN103982654A (en) * | 2014-05-30 | 2014-08-13 | 四川中物泰沃新材料有限公司 | Anti-corrosion wear-proof hydraulic cylinder and manufacturing method thereof |
| CN110316125A (en) * | 2019-06-26 | 2019-10-11 | 江苏卡威汽车工业集团股份有限公司 | A kind of bumper of mis-collision preventing and resistance to temporary impact |
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| CN111284563A (en) | 2020-06-16 |
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