CN104455183A - Damping-force-variable shock absorption assembly - Google Patents
Damping-force-variable shock absorption assembly Download PDFInfo
- Publication number
- CN104455183A CN104455183A CN201410676947.4A CN201410676947A CN104455183A CN 104455183 A CN104455183 A CN 104455183A CN 201410676947 A CN201410676947 A CN 201410676947A CN 104455183 A CN104455183 A CN 104455183A
- Authority
- CN
- China
- Prior art keywords
- damping
- assembly
- damping force
- spring
- force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000035939 shock Effects 0.000 title abstract description 9
- 238000010521 absorption reaction Methods 0.000 title abstract description 7
- 238000013016 damping Methods 0.000 claims abstract description 151
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 239000006096 absorbing agent Substances 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010339 dilation Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/443—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction manually adjusted while the damper is fully retracted or extended in a non-operational mode by rotating mechanical means that have engaged between the piston and one end of the cylinder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a damping-force-variable shock absorption assembly. The damping-force-variable shock absorption assembly comprises a shock absorption spring and a damper assembly. The damper assembly comprises a damping cylinder and a piston assembly. The recovery damping force of the damper assembly can be adjusted, and a recovery damping force adjustment portion is exposed out of a shock absorber. The structure that the recovery damping force can be externally adjusted is adopted, the key performance parameter, namely, the recovery damping force, can be adjusted according to requirements for use environments such as different road conditions when the damping-force-variable shock absorption assembly is used, the dynamic application effect is achieved, the comfort and reliability of a whole vehicle are effectively improved, the adaptability of the whole vehicle to different road conditions is improved, and driving habits of different drivers are met.
Description
Technical field
The present invention relates to a kind of automotive component, particularly a kind of damping assembly of damping force variable.
Background technique
Vibration damper is the necessary parts of motor vehicle, handling, the travelling comfort of structure influence car load, performance whether reliable and stable, is directly connected to the safe and reliable of car load, travelling comfort and handling.Existing vibration damper generally adopts fixing structure and fixing performance parameter, comprise absorber spring to preload, recovery damping force, before compression damping power etc., the critical performance parameters of damping performance is fixed value, narrow in the accommodation of different road conditions to car load, can not meet the different user demands of different road conditions, adaptability is poor.Particularly for roadsters such as motorcycles, Applicable scope is comparatively extensive, only adopt standardized shock absorber structure, can cause using the motorcycle of the vibration damper of unified standard can not be adapted to different Environmental Conditions, recovery damping force is then the principal element causing travelling comfort and reliability not to coordinate well.
Therefore, design a kind of vibration damper, according to Environmental Conditions needs such as different road conditions during use, this critical performance parameters of adjustable recovery damping force, there is the effect of dynamic application, the travelling comfort of car load and reliability are effectively improved, promotes car load for the adaptability of different road conditions, meet the driving habits of different driver.
Summary of the invention
In view of this, the invention provides a kind of damping assembly of damping force variable, according to Environmental Conditions needs such as different road conditions during use, this critical performance parameters of adjustable recovery damping force, there is the effect of dynamic application, the travelling comfort of car load and reliability are effectively improved, promotes car load for the adaptability of different road conditions, meet the driving habits of different driver.
The damping assembly of damping force variable of the present invention, comprise damping spring and damper assembly, described damper assembly comprises damping cylinder and piston assembly, described vibration damper is provided with recovery damping force controlling device, and described damping force controlling device at least comprises the first damping force adjusting element for adjusting damping spring reduction length; Realize recovery damping force by the adjustment of reduction length to regulate, regulate according to different running condition to facilitate, and adjustment scale can be set, to have the reference role of adjustment.
Further, described damping spring is variable-pitch spring, and damping spring rigidity has difference according to different compressed state, can adapt to the use of different loads situation, improves the adaptation of product; The pitch of described damping spring is increased gradually by the piston rod direction of damping cylinder to piston assembly, during use, piston rod is general upwards, in less vibrations or concave-convex road surface, good flexibility can be ensured, improve travelling comfort, along with pavement behavior is deteriorated, fine pith part works, and ensures the stability of vehicle, Security and travelling comfort.
Further, described damping spring is pressed closer by locking nut and installs and carry out pretightening force adjustment by locking nut; Regulate simple and convenient, convertibility is strong; Described locking nut is provided with for the opening by external force adjusting nut internal diameter, described opening side is provided with tapped hole, opposite side is relative with tapped hole is provided with through hole, be threaded onto tapped hole be provided with screw for adjusting nut internal diameter through through hole, locking nut is made by screw after adjustment, under external force and utilize the size of the internal diameter of the elasticity adjustable nut of nut itself, and utilize the adjustment of internal diameter to change nut to the tightening force of vibration damper, namely External Force Acting is utilized to reduce aperture pitch, thus reduce nut internal diameter, to reach the object of mechanical interlocking; Owing to only having a nut can realize adjustment and locking, reduce axial dimension, the adjustment range of vibration damper can be increased, and adjust more convenient, simplify locking mechanism itself, strengthen locking intensity, ensure the safe handling of vibration damper preferably.
Further, described first damping force adjusting element is knob structure, and described knob structure screw-thread fit is in the vibration damper fitting seat with piston rod axial restraint and for by rotating the reduction length adjusting damping spring; Structure is simple and easy to adjust, is conveniently arranged at outside and facilitates manual tune.
Further, described damping spring is coated at the piston rod of damping cylinder and piston assembly simultaneously, described locking nut screw-thread fit is in damping cylinder, locking nut is withstood in damping spring one end, the other end withstands the spring seat be connected at axial restraint with the piston rod of piston assembly, and structure is simple, and spring travel is longer, the interference between spring with piston rod effectively can be avoided to contact, improve travelling comfort.
Further, be coated at piston rod and be provided with elastomeric damper member, this elastomeric damper member be frustum structure and frustum large end face near spring seat, small end face is facing to damping cylinder; Spring shock absorption part can adopt rubber to make; Can in damping extreme limit of travel situation, force value increases gradually, on the guarantee reliable and stable basis of limit case, takes into account travelling comfort.
Further, the damping cavity connection in described damping cylinder is provided with relative to damping cylinder independently damping air bag, and be filled with reliable and stable inert gas (as nitrogen) during use, high-pressure oil pipe can be adopted to connect, and deformed dilation coefficient is little, reliable and stable; Independently airbag structure, the structure according to car load is arranged, flexible arrangement is convenient.
Further, described damping air bag is provided with the air valve for inflation/deflation; Existing valve inside can be adopted to design, can convenient and swift inflation and venting as required, superior performance, reliable and stable.
Further, damping force controlling device also comprises and is arranged at damping air bag for adjusting the second damping force adjusting element of damping force, with the first damping force adjusting element acting in conjunction, regulates recovery damping force, ensures the ride comfort of car load; This second damping force adjusting element is utilized (to be generally positioned at the passage port that damping air bag is communicated with vibration damper, adopt the structure of modulating valve) open, close or adjustable partially open adjustment passage, the size of circulation area is changed in the process of adjustment, not only regulate sensitivity higher, also there is linear character, ensure the usability of vibration damper.
Further, the adjusting portion of the first damping force adjusting element and the second damping force adjusting element, all can manually operated mode expose, can regulate scale according to design forming, simple and easy to use.
Beneficial effect of the present invention: the damping assembly of damping force variable of the present invention, adopt the structure of adjustable recovery damping force, according to Environmental Conditions needs such as different road conditions during use, this critical performance parameters of adjustable recovery damping force, there is the effect of dynamic application, the travelling comfort of car load and reliability are effectively improved, promotes car load for the adaptability of different road conditions, meet the driving habits of different driver.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is locking nut structure schematic diagram.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is locking nut structure schematic diagram, as shown in the figure: the damping assembly of the damping force variable of the present embodiment, comprise damping spring 1 and damper assembly, described damper assembly comprises damping cylinder 2 and piston assembly, and piston assembly comprises piston and piston rod 3 certainly; Described vibration damper is provided with recovery damping force controlling device, and described damping force controlling device at least comprises the first damping force adjusting element for adjusting damping spring reduction length; Realize recovery damping force by the adjustment of reduction length to regulate, regulate according to different running condition to facilitate, and adjustment scale can be set, to have the reference role of adjustment.
In the present embodiment, described damping spring 1 is variable-pitch spring, and damping spring rigidity has difference according to different compressed state, can adapt to the use of different loads situation, improves the adaptation of product.
In the present embodiment, the pitch of described damping spring 1 is increased gradually by piston rod 3 direction of damping cylinder to piston assembly, during use, piston rod 3 is general upwards, in less vibrations or concave-convex road surface, good flexibility can be ensured, improve travelling comfort, along with pavement behavior is deteriorated, fine pith part works, and ensures the stability of vehicle, Security and travelling comfort.
In the present embodiment, described damping spring 1 is pressed closer by locking nut 10 and installs and carry out pretightening force adjustment by locking nut 10, regulate simple and convenient, convertibility is strong, described locking nut 10 is provided with for the opening 10a by external force adjusting nut internal diameter, described opening 10a side is provided with tapped hole 10b, opposite side is relative with tapped hole is provided with through hole, be threaded onto tapped hole be provided with screw for adjusting nut internal diameter through through hole, locking nut 10 is made by screw after adjustment, under external force and utilize the size of the internal diameter of the elasticity adjustable nut of nut itself, and utilize the adjustment of internal diameter to change nut to the tightening force of vibration damper, namely External Force Acting is utilized to reduce aperture pitch, thus reduce nut internal diameter, to reach the object of mechanical interlocking, owing to only having a nut can realize adjustment and locking, reduce axial dimension, the adjustment range of vibration damper can be increased, and adjust more convenient, simplify locking mechanism itself, strengthen locking intensity, ensure the safe handling of vibration damper preferably, as shown in the figure, opening is disposed radially, and namely opening direction is along the radial direction of nut, easy to process, has good stress, and can ensure the bulk strength after locking nut 10 opening, is easy to arrange the parts it being applied to external force, the radial outer wall of locking nut 10 is provided with for providing screw to screw in space and holding the groove of screw head, this groove facilitates laying of screw and screws in, and screw head is hidden in groove, avoid rotating interference during operation, and nut entirety is taken up room do not occur comparatively significantly to change, thus avoid motion artifacts, the cross section of described groove is right angle, wherein a sidewall leans against the inner side end of screw head perpendicular to screw axis, make screw head and nut have larger area of contact, ensure the locking of screw itself, thus ensure the locking property that the nut after adjustment is final, as shown in the figure, locking nut 10 is loop configuration, its cylindrical circumferencial direction be laid with for screw or loosening nut put forth effort hole, facilitate the installation and removal of locking nut 10 to operate.
In the present embodiment, described first damping force adjusting element is knob structure 5, and described knob structure 5 screw-thread fit is in the vibration damper fitting seat with piston rod axial restraint and for by rotating the reduction length adjusting damping spring; Structure is simple and easy to adjust, is conveniently arranged at outside and facilitates manual tune; As shown in the figure, knob structure 5 axially pushes against with spring seat 4 or is fixedly connected with (generally adopting the structure pushed against).
In the present embodiment, described damping spring 1 is coated at damping cylinder 2 and piston rod 3 simultaneously, described locking nut 10 screw-thread fit is in damping cylinder 2, locking nut 10 is withstood in damping spring 1 one end, the other end withstands the spring seat 4 be connected at axial restraint with the piston rod 3 of piston assembly, and structure is simple, and spring travel is longer, the interference between spring with piston rod effectively can be avoided to contact, improve travelling comfort.
In the present embodiment, be coated at piston rod 3 and be provided with elastomeric damper member 11, as shown in the figure, elastomeric damper member 11 is between damping spring 1 and the piston rod 3 of piston assembly; This elastomeric damper member 11 be frustum structure and frustum large end face near spring seat 4, small end face is facing to damping cylinder; Spring shock absorption part 11 can adopt rubber to make; Can in damping extreme limit of travel situation, small end face withstands damping cylinder end cap, and force value increases gradually in elastic compression process, on the guarantee reliable and stable basis of limit case, takes into account travelling comfort.
In the present embodiment, damping cavity connection in described damping cylinder 2 is provided with relative to damping cylinder 2 independently damping air bag 8, adopt independently airbag structure, be filled with reliable and stable inert gas (as nitrogen) during use, the size of expansion damping cavity, plays the effect of Auxiliary Damping, vibration damper is enable fully to play the effect of damping, high-pressure oil pipe can be adopted to connect, and deformed dilation coefficient is little, reliable and stable; Independently airbag structure, the structure according to car load is arranged, flexible arrangement is convenient, and the aesthetic appearance of car load, travelling comfort and reliability are effectively improved.
In the present embodiment, described damping air bag 8 is provided with the air valve 7 for inflation/deflation; Existing valve inside can be adopted to design, can convenient and swift inflation and venting as required, superior performance, reliable and stable.
In the present embodiment, damping force controlling device also comprises and is arranged at damping air bag 8 for adjusting the second damping force adjusting element 6 of damping force, with the first damping force adjusting element acting in conjunction, regulates recovery damping force, ensures the ride comfort of car load; Utilize this second damping force adjusting element to open, close or adjustable partially open adjustment passage, in the process of adjustment, change the size of circulation area, not only regulate sensitivity higher, also there is linear character, ensure the usability of vibration damper.In the present embodiment, damping force controlling device 6 is the modulating valve on the passage (being generally positioned at the passage port that damping air bag is communicated with vibration damper) that is arranged at damping air bag and is communicated with damping cavity, the adjustment drive portion of controlling device is valve handle or electric driving part, and structure is simple and install easy to adjust.
In the present embodiment, the adjusting portion of the first damping force adjusting element and the second damping force adjusting element 6, all can manually operated mode expose, can regulate scale according to design forming, simple and easy to use.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. the damping assembly of a damping force variable, comprise damping spring and damper assembly, described damper assembly comprises damping cylinder and piston assembly, it is characterized in that: described vibration damper is provided with recovery damping force controlling device, described damping force controlling device at least comprises the first damping force adjusting element for adjusting damping spring reduction length.
2. the damping assembly of damping force variable according to claim 1, is characterized in that: described damping spring is variable-pitch spring; The pitch of described damping spring is increased gradually by the piston rod direction of damping cylinder to piston assembly.
3. the damping assembly of damping force variable according to claim 1, is characterized in that: described damping spring is pressed closer by locking nut and installs and carry out pretightening force adjustment by locking nut; Described locking nut is provided with for the opening by external force adjusting nut internal diameter, and described opening side is provided with tapped hole, and opposite side is relative with tapped hole is provided with through hole, is threaded onto tapped hole is provided with screw for adjusting nut internal diameter through through hole.
4. the damping assembly of damping force variable according to claim 1, it is characterized in that: described first damping force adjusting element is knob structure, described knob structure screw-thread fit is in the vibration damper fitting seat with piston rod axial restraint and for by rotating the reduction length adjusting damping spring.
5. the damping assembly of damping force variable according to claim 1, it is characterized in that: described damping spring is coated at the piston rod of damping cylinder and piston assembly simultaneously, described locking nut screw-thread fit is in damping cylinder, locking nut is withstood in damping spring one end, and the other end withstands the spring seat be connected at axial restraint with the piston rod of piston assembly.
6. the damping assembly of damping force variable according to claim 5, is characterized in that: be coated at piston rod and be provided with elastomeric damper member, this elastomeric damper member be frustum structure and frustum large end face near spring seat, small end face is facing to damping cylinder.
7. the damping assembly of damping force variable according to claim 1, is characterized in that: the damping cavity connection in described damping cylinder is provided with relative to damping cylinder independently damping air bag.
8. the damping assembly of damping force variable according to claim 7, is characterized in that: described damping air bag is provided with the air valve for inflation/deflation.
9. the damping assembly of damping force variable according to claim 7, is characterized in that: damping force controlling device also comprises and is arranged at damping air bag for adjusting the second damping force adjusting element of damping force.
10. the damping assembly of damping force variable according to claim 9, is characterized in that: the adjusting portion of the first damping force adjusting element and the second damping force adjusting element is all can manually operated mode expose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676947.4A CN104455183A (en) | 2014-11-21 | 2014-11-21 | Damping-force-variable shock absorption assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676947.4A CN104455183A (en) | 2014-11-21 | 2014-11-21 | Damping-force-variable shock absorption assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104455183A true CN104455183A (en) | 2015-03-25 |
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ID=52901737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410676947.4A Pending CN104455183A (en) | 2014-11-21 | 2014-11-21 | Damping-force-variable shock absorption assembly |
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| Country | Link |
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| CN (1) | CN104455183A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939887A (en) * | 2017-12-21 | 2018-04-20 | 晋江圣翔机械有限公司 | A kind of buffer |
| CN112283284A (en) * | 2020-10-23 | 2021-01-29 | 台州绿嘉壹科技有限公司 | Hardness-adjustable shock absorber |
| CN113944722A (en) * | 2021-10-12 | 2022-01-18 | 珠海格力电器股份有限公司 | Smoke exhaust ventilator |
| CN114458713A (en) * | 2022-01-18 | 2022-05-10 | 深圳扬宁汽车配件有限公司 | Shock Absorbers and Automobiles |
| CN115367003A (en) * | 2022-08-31 | 2022-11-22 | 东风华神汽车有限公司 | Cab front suspension assembly and vehicle |
| CN116989089A (en) * | 2023-09-26 | 2023-11-03 | 天和骏行智能装备(福建)有限公司 | Damping device for emergency power supply vehicle under complex road conditions |
| CN119122992A (en) * | 2024-11-13 | 2024-12-13 | 盐城大丰盛源机械有限责任公司 | Electric vehicle shock absorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3543156A1 (en) * | 1985-12-06 | 1987-06-11 | Bosch Gmbh Robert | Hydropneumatic spring strut |
| CN201368169Y (en) * | 2009-03-27 | 2009-12-23 | 江苏振龙减震器有限公司 | Motorbike front shock absorber with adjustable damping and hardness |
| CN201866056U (en) * | 2010-11-26 | 2011-06-15 | 青特集团有限公司 | Locking nut for automobile front axle hub bearings |
| CN203239842U (en) * | 2013-05-13 | 2013-10-16 | 瑞安市耐迪特汽摩配有限公司 | Shock absorber with adjustable restoring resistance |
| CN103527698A (en) * | 2013-11-04 | 2014-01-22 | 四川川南减震器集团有限公司 | Motorcycle shock absorber with damping force adjustable |
-
2014
- 2014-11-21 CN CN201410676947.4A patent/CN104455183A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3543156A1 (en) * | 1985-12-06 | 1987-06-11 | Bosch Gmbh Robert | Hydropneumatic spring strut |
| CN201368169Y (en) * | 2009-03-27 | 2009-12-23 | 江苏振龙减震器有限公司 | Motorbike front shock absorber with adjustable damping and hardness |
| CN201866056U (en) * | 2010-11-26 | 2011-06-15 | 青特集团有限公司 | Locking nut for automobile front axle hub bearings |
| CN203239842U (en) * | 2013-05-13 | 2013-10-16 | 瑞安市耐迪特汽摩配有限公司 | Shock absorber with adjustable restoring resistance |
| CN103527698A (en) * | 2013-11-04 | 2014-01-22 | 四川川南减震器集团有限公司 | Motorcycle shock absorber with damping force adjustable |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939887A (en) * | 2017-12-21 | 2018-04-20 | 晋江圣翔机械有限公司 | A kind of buffer |
| CN112283284A (en) * | 2020-10-23 | 2021-01-29 | 台州绿嘉壹科技有限公司 | Hardness-adjustable shock absorber |
| CN113944722A (en) * | 2021-10-12 | 2022-01-18 | 珠海格力电器股份有限公司 | Smoke exhaust ventilator |
| CN114458713A (en) * | 2022-01-18 | 2022-05-10 | 深圳扬宁汽车配件有限公司 | Shock Absorbers and Automobiles |
| CN115367003A (en) * | 2022-08-31 | 2022-11-22 | 东风华神汽车有限公司 | Cab front suspension assembly and vehicle |
| CN116989089A (en) * | 2023-09-26 | 2023-11-03 | 天和骏行智能装备(福建)有限公司 | Damping device for emergency power supply vehicle under complex road conditions |
| CN116989089B (en) * | 2023-09-26 | 2023-12-05 | 天和骏行智能装备(福建)有限公司 | Damping device for emergency power supply vehicle under complex road conditions |
| CN119122992A (en) * | 2024-11-13 | 2024-12-13 | 盐城大丰盛源机械有限责任公司 | Electric vehicle shock absorber |
| CN119122992B (en) * | 2024-11-13 | 2025-04-08 | 盐城大丰盛源机械有限责任公司 | Electric motor car bumper shock absorber |
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Application publication date: 20150325 |