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WO2018145421A1 - Mécanisme d'amortissement d'automobile résistant aux chocs - Google Patents

Mécanisme d'amortissement d'automobile résistant aux chocs Download PDF

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Publication number
WO2018145421A1
WO2018145421A1 PCT/CN2017/095012 CN2017095012W WO2018145421A1 WO 2018145421 A1 WO2018145421 A1 WO 2018145421A1 CN 2017095012 W CN2017095012 W CN 2017095012W WO 2018145421 A1 WO2018145421 A1 WO 2018145421A1
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WIPO (PCT)
Prior art keywords
plate
vertical
block
spring
trigger
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.)
Ceased
Application number
PCT/CN2017/095012
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English (en)
Chinese (zh)
Inventor
郑东振
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Individual
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Individual
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Filing date
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Publication of WO2018145421A1 publication Critical patent/WO2018145421A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
    • B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
    • B60G13/10—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • B60G2202/242—Pneumatic damper

Definitions

  • the invention belongs to the field of shock absorption technology, and in particular relates to an impact-resistant automobile shock absorption mechanism.
  • the shock absorbing mechanism is installed between the chassis and the vehicle body, and the body can overcome the influence of the unevenness of the ground on the vehicle body under the action of the shock absorbing mechanism; the traditional shock absorbing mechanism can ensure the elasticity to relieve the ground impact under a certain impact force.
  • the shock absorbing mechanism exceeds the range of the impact force that can be relieved by itself, and the shock absorbing mechanism has an inelastic stroke, which causes the vehicle body to collide with the chassis;
  • the shock absorbing mechanism will lose some elasticity and cause the collision between the body and the chassis. The collision causes certain damage to the chassis and the body of the vehicle, shortening the driving life of the vehicle.
  • the present invention contemplates an impact resistant automotive shock absorbing mechanism that addresses the above problems.
  • the present invention discloses an impact-resistant automobile shock absorbing mechanism which is realized by the following technical solutions.
  • An impact-resistant automobile shock absorbing mechanism comprising: a back support plate, a trigger mechanism, a lower top block, a lower top block support, a first top plate, a top plate support, a first air inlet, a second top plate, and a piston Ring, shock absorbing spring, slide plate, second air outlet, second air inlet, switch second support, switch first support, annular cylinder, trigger mechanism support column, support column support, damping inner rod, damping rod sleeve, bottom plate , air passage, gas switch, switch adjusting block, wherein the first top plate is installed at the bottom of the vehicle body, the second top plate is mounted on the lower side of the first top plate by the top plate support, the top end of the damping inner rod is mounted on the lower side of the second top plate, and the damper rod is embedded The bottom side of the damping inner rod is mounted on the lower side of the damping rod sleeve, and the bottom plate is mounted on the bottom plate; the piston ring is installed on the lower side of the second top plate, and
  • the trigger mechanism includes a trigger block, a card slot, a vertical vertical plate, a vertical movement track, a trigger vertical bar, a block, a vertical horizontal plate, a horizontal guide groove, a trigger horizontal plate, a second spring, a first telescopic rod, and a first a telescopic sleeve, a vertical movement guide groove, a card arc, a bottom end plate, a card slot, a lateral guide block, a second telescopic rod, a second telescopic sleeve, a third spring, a fourth spring, a third telescopic rod, a third telescopic sleeve, wherein the vertical movement rail is mounted on the back support plate, the bottom end plate is installed at the lower end of the vertical movement rail and is located at the upper end of the horizontal support rail, and the vertical movement rail has a trapezoidal vertical movement guide groove; the lower end of the vertical movement vertical plate is installed Vertically moving the horizontal plate, the vertical moving vertical plate has a vertical
  • the second telescopic sleeve is mounted on the vertical vertical plate, the second telescopic rod is installed in the second telescopic sleeve, and the rear side of the trigger vertical rod is connected with one end of the second telescopic rod;
  • the third spring is nested The second telescopic rod and the second telescopic sleeve are outside, and the third spring is connected to the vertical vertical plate at one end, and the other end is connected to the rear side of the trigger vertical rod;
  • the first telescopic sleeve is mounted on the bottom end plate, and the first telescopic rod is mounted on the In the first telescopic sleeve, the lower side of the vertical horizontal plate is connected to the top end of the first telescopic rod;
  • the second spring is nested on the outer side of the first telescopic rod and the first telescopic sleeve, and one end of the second spring is connected with the bottom end plate, and the other end is connected
  • the bottom end of the lower top block and the triggering ramp of the trigger block are in contact with the trigger plane; the slide plate is mounted on the trigger cross plate, and the slide plate cooperates with the switch adjusting block.
  • the second air inlet is connected to the high pressure cylinder through the air duct, the second air outlet is connected to the first air inlet through the air duct, and the second air outlet is a pressure sensing air outlet and is open to the atmosphere.
  • the first air inlet is a one-way air inlet.
  • the above high pressure gas cylinder is mounted on the chassis.
  • the second spring, the third spring and the fourth spring are all compression bombs Spring.
  • the lower side of the card slot has a card groove slope
  • the block has a card arc
  • the shock absorbing mechanism of the invention is installed between the chassis and the vehicle body, and the body can overcome the influence of the unevenness of the ground on the vehicle body under the action of the shock absorbing mechanism; the traditional shock absorbing mechanism can be used at a certain impact strength.
  • the next guarantee is flexible to mitigate the impact on the ground.
  • the shock absorbing mechanism exceeds the range of the impact force that can be relieved by itself, and the shock absorbing mechanism has an inelastic stroke, which causes the vehicle body to collide with the chassis; When it is long, the shock absorbing mechanism will lose some elasticity and cause the collision between the body and the chassis.
  • the bottom plate of the damper mechanism is connected to the chassis, the first top plate is connected to the vehicle body, and the damper mechanism is arranged between the first top plate and the bottom plate, and the damper inner rod in the damper mechanism can be accompanied by a certain resistance sliding in the damper sleeve.
  • the accompanying resistance makes the impact quickly damped;
  • the outer periphery of the damping structure has a pneumatic spring that can adjust the air pressure.
  • the height of the air pressure can affect the elastic coefficient of the pneumatic spring; the pneumatic spring introduces high-pressure air through the first air inlet and passes through the first The air port slowly releases high-pressure air.
  • the compressed gas generates a repulsive force.
  • the gas pressure affects the compressibility of the gas, which in turn affects the elastic coefficient of the pneumatic spring.
  • the pneumatic spring has a conventional rigid spring. When the impact is within the elastic spring elastic receiving range, the pneumatic spring The internal air pressure is stable, when the impact exceeds the elastic spring elastic tolerance range, The trigger will activate the pneumatic switch through the lower top block support and the lower top block triggering mechanism.
  • the high pressure gas will be introduced into the pneumatic spring through the first air inlet, so that the elastic coefficient of the pneumatic spring is increased to alleviate the next excessive Shock.
  • the specific embodiment is as follows: initially, the body body under its own weight, the damping mechanism and the pneumatic spring in the damping mechanism maintain a certain relative position, and at this time, the length of the damping mechanism is the longest, and the contact surface of the lower top block and the trigger block is triggered.
  • the second spring is compressed to a certain extent; when the local surface protrusion is small, the amplitude of the lower top block swings up and down is small, and the contact surface of the lower top block and the trigger block is a trigger plane when the upper and lower amplitude swings slightly; the trigger block passes through the vertical
  • the vertical plate slides in the vertical movement guide groove to move up and down, and the downward movement of the lower top block moves downward with the trigger block while compressing the second spring; when the lower top block rises, the trigger block is under the action of the second spring It can follow the rise of the lower block.
  • the trigger mechanism does not trigger, and the gas switch is always in the closed state.
  • the body When the rigid spring can not withstand the impact, the body will have a rigid impact with the chassis.
  • the shock absorbing mechanism When the shock absorbing mechanism is in the shortest state, the triggering vertical rod is pressed by the lower top block to the card slot to cooperate with the card block, and the block passes through the third telescopic rod and the third Shrink sleeve Sliding and snapping into the card slot, the card block arc and the card slot bevel are designed to facilitate the card block to enter the card slot; when the impact is temporarily lost, the rigid spring and the pneumatic spring act.
  • the lower top block starts to move upwards, but at this time, the trigger block cannot move up and down because the card block is stuck in the card slot; the trigger horizontal plate, the trigger vertical bar and the trigger block can slide laterally along the traverse guide groove, and the lower top block rises. After a small amplitude, the contact surface of the lower top block and the trigger block changes from the trigger plane to the trigger ramp.
  • the trigger block moves under the action of the third spring, triggering the transverse plate to move toward the pneumatic switch installation position, and triggering through the slide during the movement.
  • the switch adjusting block allows the high-pressure gas in the high-pressure gas tank to enter the pneumatic spring, increasing the elasticity of the pneumatic spring and preventing the impact caused by the next large impact.
  • the lateral movement of the trigger block causes the card block to gradually disengage from the card slot.
  • the card slot, the triggering vertical rod and the trigger block will move upward under the action of the second spring and contact with the lower top block.
  • the lower top block first contacts the trigger ramp to cause the trigger cross-plate to return to the original position of the gas switch direction until the lower side of the lower top block contacts the trigger plane, and finally closes the gas switch. If the road surface is relatively flat, the high-pressure gas in the pneumatic spring will slowly release to the pressure recognized by the original air outlet through the first air outlet, and restore the normal elastic coefficient.
  • the design of the skateboard is to oscillate up and down in the whole process of triggering the horizontal plate.
  • the design of the skateboard ensures that the switch adjustment block can be triggered at any position up and down.
  • the first telescopic rod and the first telescopic sleeve, the second telescopic rod and the second telescopic sleeve, and the third telescopic rod and the third telescopic sleeve are both designed to increase lateral stability when the spring is compressed. In the present invention, only when the current top block is raised by a small amount, the gas enters the pneumatic spring.
  • the design purpose is that the increase of the length of the shock absorbing mechanism after the rise of a small section reduces the resistance of the high pressure gas cylinder gas when entering the pneumatic spring;
  • the purpose of the one-way inlet is that the pressure of the pneumatic spring does not apply pressure through the first air inlet, and can only be applied through the first air outlet.
  • Figure 1 is a schematic view of the overall component distribution.
  • Figure 2 is a cross-sectional view of the overall component.
  • Figure 3 is a schematic view showing the mutual mounting position of the piston ring and the damper inner rod.
  • Figure 4 is a schematic view showing the installation of a piston ring and an annular cylinder.
  • FIG. 5 is a schematic diagram of a support structure of a pneumatic switch and a trigger mechanism.
  • Figure 6 is a schematic view of the installation of the lower top block.
  • Figure 7 is a schematic diagram of a gas switch.
  • Fig. 8 is a schematic structural view of a trigger mechanism.
  • FIG. 9 is a schematic diagram of a structure of a trigger block.
  • Figure 10 is a schematic view showing the structure of the traverse guide groove.
  • Figure 11 is a schematic view of the structure of the card block.
  • FIG. 1 and 2 it comprises a back support plate, a trigger mechanism, a lower top block, a lower top block support, a first top plate, a top plate support, a first air inlet, a second top plate, a piston ring, a shock absorbing spring, Skateboard, second air outlet, second air inlet, switch second support, switch first support, annular cylinder, trigger mechanism support column, support column support, damping inner rod, damping rod sleeve, bottom plate, air passage, gas switch a switch adjusting block, wherein the first top plate is mounted on the bottom of the vehicle body, as shown in FIG.
  • the second top plate is mounted on the lower side of the first top plate by the top plate support, and the top end of the damping inner rod is mounted on the lower side of the second top plate, as shown in FIG.
  • the damper rod sleeve is nested on the lower side of the damper inner rod, the bottom side of the damper rod sleeve is mounted with a bottom plate, and the bottom plate is mounted on the bottom plate; as shown in Figs. 2 and 4, a piston ring is mounted on the lower side of the second top plate, and the piston ring is installed.
  • the annular cylinder is a circular cylinder and has an annular inner cavity in the ring, the annular cylinder is mounted on the bottom plate and the inner wall of the annular cylinder is in surface contact with the outer edge of the damper sleeve, and the piston ring is nested in the annular cylinder In the annular cavity; as shown in Figure 3.
  • a first air inlet and a first air outlet are symmetrically mounted on the second top plate, and the piston ring is symmetrically opened with two through air passages and the two air passages are respectively connected to the first air inlet and the first air outlet As shown in FIG.
  • the damper spring is nested outside the piston ring and the annular cylinder, and one end of the damper spring is mounted on the upper side of the bottom plate, and the other end is mounted on the lower side of the second top plate;
  • the lower top block is mounted on the lower side of the second top plate by the lower top block support;
  • the trigger mechanism support column is supported on the bottom plate by the support column support, and the second support of the switch is installed through the first support of the switch.
  • the back support plate is mounted on the top end of the trigger mechanism support column through the horizontal support plate.
  • the trigger mechanism is mounted on the horizontal support plate; the gas switch is mounted on the second support of the switch, as shown in the figure. As shown in Fig. 7, a second air inlet is mounted on the side of the gas switch, a second air outlet is mounted on the upper end of the gas switch, and a switch adjusting block is arranged on the gas switch side.
  • the trigger mechanism includes a trigger block, a card slot, a vertical vertical plate, a vertical movement track, a trigger vertical bar, a block, a vertical horizontal plate, a horizontal guide groove, a trigger horizontal plate, and a second spring.
  • the guide groove is vertically moved; the vertical horizontal plate is installed at the lower end of the vertical vertical plate, as shown in Fig.
  • the vertical vertical plate has a vertical displacement guide block on one side, and the vertical vertical plate moves through the vertical guide block and the vertical movement guide groove.
  • the utility model is installed on the vertical movement rail, and the vertical movement horizontal plate has a horizontal movement guide groove; as shown in FIG. 9, the trigger block is mounted on the trigger vertical rod, the trigger vertical rod is mounted on the trigger horizontal plate, and the trigger horizontal plate has the lower side of the horizontal plate.
  • the guide block is traversed, and the trigger cross plate is mounted on the vertical cross plate by the cooperation of the traverse guide block and the traverse guide groove, and the upper side of the trigger block has
  • the slanting surface and the triggering plane are mounted on the side of the triggering vertical rod, and the card slot has a card slot in the middle; as shown in Figures 8 and 10, the second telescopic sleeve is mounted on the vertical vertical plate, and the second telescopic rod is installed in the first In the second telescopic sleeve, the rear side of the triggering vertical rod is connected with one end of the second telescopic rod; the third spring is nested on the outer side of the second telescopic rod and the second telescopic sleeve, and one end of the third spring is connected with the vertical vertical board, and the other end is connected with Triggering the rear side of the vertical rod; the first telescopic sleeve is mounted on the bottom end plate, the first telescopic rod is installed in the
  • the third telescopic rod is installed in the third telescopic sleeve, and the rear side of the block is connected to one end of the third telescopic rod;
  • the fourth spring is nested on the outer side of the third telescopic rod and the third telescopic sleeve, and the fourth spring end and the back support plate Connected, the other end is connected to the rear side of the card block; the card slot is matched with the card block.
  • the bottom end of the lower top block and the triggering ramp of the trigger block are in contact with the trigger plane; the slide plate is mounted on the trigger cross plate, and as shown in FIG. 8, the slide plate cooperates with the switch adjusting block.
  • the second air inlet is connected to the high pressure cylinder through the air duct, and the second air outlet and the first air inlet are passed
  • the air duct is connected, and the second air outlet is a pressure sensing air outlet and is open to the atmosphere.
  • the first air inlet is a one-way air inlet.
  • the above high pressure gas tank is mounted on the chassis.
  • the second spring, the third spring, and the fourth spring are both compression springs.
  • the lower side of the card slot has a card groove slope
  • the block has a block arc.
  • the shock absorbing mechanism is installed between the chassis and the vehicle body, and the body can overcome the influence of the unevenness of the ground on the vehicle body under the action of the shock absorbing mechanism; the traditional shock absorbing mechanism can ensure the impact under a certain impact force. Flexibility to relieve ground impact. When the vehicle speed is fast or the ground protrusion is large and the impact is large, the shock absorbing mechanism exceeds the range of the impact force that can be relieved by itself, and the shock absorbing mechanism has an inelastic stroke, which causes the vehicle body to collide with the chassis; When it is long, the shock absorbing mechanism will lose some elasticity and cause the collision between the body and the chassis.
  • the bottom plate of the damper mechanism is connected to the chassis, the first top plate is connected to the vehicle body, and the damper mechanism is arranged between the first top plate and the bottom plate, and the damper inner rod in the damper mechanism can be accompanied by a certain resistance sliding in the damper sleeve.
  • the accompanying resistance makes the impact quickly damped;
  • the outer periphery of the damping structure has a pneumatic spring that can adjust the air pressure.
  • the height of the air pressure can affect the elastic coefficient of the pneumatic spring; the pneumatic spring introduces high-pressure air through the first air inlet and passes through the first The air port slowly releases high-pressure air.
  • the compressed gas generates a repulsive force.
  • the gas pressure affects the compressibility of the gas, which in turn affects the elastic coefficient of the pneumatic spring.
  • the pneumatic spring has a conventional rigid spring. When the impact is within the elastic spring elastic receiving range, the pneumatic spring The internal air pressure is stable, when the impact exceeds the elastic spring elastic tolerance range, The trigger will activate the pneumatic switch through the lower top block support and the lower top block triggering mechanism.
  • the high pressure gas will be introduced into the pneumatic spring through the first air inlet, so that the elastic coefficient of the pneumatic spring is increased to alleviate the next excessive Shock.
  • the specific embodiment is as follows: initially, the body body under its own weight, the damping mechanism and the pneumatic spring in the damping mechanism maintain a certain relative position, and at this time, the length of the damping mechanism is the longest, and the contact surface of the lower top block and the trigger block is triggered.
  • the second spring is compressed to a certain extent; when the local surface protrusion is small, the amplitude of the lower top block swings up and down is small, and the contact surface of the lower top block and the trigger block is a trigger plane when the upper and lower amplitude swings slightly; the trigger block passes through the vertical
  • the vertical plate slides in the vertical movement guide groove to move up and down, and the downward movement of the lower top block moves downward with the trigger block while compressing the second spring; when the lower top block rises, the trigger block is under the action of the second spring It can follow the rise of the top block, and the trigger mechanism does not touch during the entire small-scale operation.
  • the gas switch is always in the closed state; when the strong spring can not withstand the impact, the body will have a rigid impact with the chassis.
  • the shock absorbing mechanism is in the shortest state, and the triggering vertical rod is pressed by the lower top block.
  • the card slot is matched with the card block, and the card block is inserted into the card slot through the sliding of the third telescopic rod and the third telescopic sleeve, and the card block arc and the card slot bevel are designed to be compared.
  • the lower block starts to move upward under the action of the rigid spring and the pneumatic spring, but at this time, the trigger block cannot move up and down because the card jams the card slot;
  • the plate, the triggering vertical rod and the triggering block can slide laterally along the traverse guiding groove.
  • the contact surface of the lower top block and the triggering block changes from the triggering plane to the triggering inclined plane, and the triggering block is in the process.
  • the triggering transverse plate moves toward the installation position of the pneumatic switch.
  • the switch regulating block is triggered by the sliding plate, so that the high-pressure gas in the high-pressure gas tank enters the gas.
  • Spring increase the elasticity of the pneumatic spring, to prevent the next big impact shocks.
  • the lateral movement of the trigger block causes the card block to gradually disengage from the card slot.
  • the card slot, the triggering vertical rod and the trigger block will move upward under the action of the second spring and contact with the lower top block.
  • the lower top block first contacts the trigger ramp to cause the trigger cross-plate to return to the original position of the gas switch direction until the lower side of the lower top block contacts the trigger plane, and finally closes the gas switch.
  • the design of the skateboard is to oscillate up and down in the whole process of triggering the horizontal plate.
  • the design of the skateboard ensures that the switch adjustment block can be triggered at any position up and down.
  • the first telescopic rod and the first telescopic sleeve, the second telescopic rod and the second telescopic sleeve, and the third telescopic rod and the third telescopic sleeve are both designed to increase lateral stability when the spring is compressed.
  • the gas enters the pneumatic spring.
  • the design purpose is that the increase of the length of the shock absorbing mechanism after the rise of a small section reduces the resistance of the high pressure gas cylinder gas when entering the pneumatic spring;
  • the purpose of the one-way inlet is that the pressure of the pneumatic spring does not apply pressure through the first air inlet, and can only be applied through the first air outlet.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

La présente invention porte sur un mécanisme d'amortissement d'automobile résistant aux chocs, comprenant un mécanisme de déclenchement (81), un bloc éjecteur inférieur (82), un ressort d'amortissement (89), une plaque coulissante (90), un cylindre annulaire (96), une plaque inférieure (102), un commutateur de gaz (104), et un bloc de réglage de commutateur (105), la plaque inférieure (102) étant reliée à un châssis, une première plaque supérieure (84) étant reliée à une carrosserie d'automobile, et un mécanisme d'amortissement étant disposé entre la première plaque supérieure (84) et la plaque inférieure (102). Un amortisseur pneumatique est disposé à la périphérie du mécanisme d'amortissement. Du gaz dans le cylindre annulaire (96) peut être comprimé par coulissement d'un segment de piston (88), une force de répulsion est générée par le gaz comprimé, la pression du gaz influence la compressibilité du gaz, et ainsi le coefficient d'élasticité de l'amortisseur pneumatique est influencé. De plus, un ressort rigide classique est en outre prévu à la périphérie de l'amortisseur pneumatique, un impact de celui-ci déclenche le mécanisme de déclenchement (81) pour permettre à un commutateur pneumatique d'être ouvert après que l'impact dépasse la plage de tolérance d'élasticité du ressort rigide, et du gaz haute pression est conduit dans le ressort pneumatique au moyen d'une première entrée de gaz (86) lorsque le commutateur pneumatique est ouvert, de telle sorte que le coefficient d'élasticité du ressort pneumatique est augmenté, et un impact excessif suivant est atténué.
PCT/CN2017/095012 2017-02-09 2017-07-28 Mécanisme d'amortissement d'automobile résistant aux chocs Ceased WO2018145421A1 (fr)

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CN201710070085.4 2017-02-09
CN201710070085.4A CN106704469B (zh) 2017-02-09 2017-02-09 一种抗冲击的汽车减震机构

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CN109866720A (zh) * 2019-03-22 2019-06-11 安徽彤上智能科技有限公司 一种减小刚性冲击转换冲击力的防撞梁
CN111981070A (zh) * 2020-09-01 2020-11-24 陈刚 一种双向汽车减震系统

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CN108799396B (zh) * 2017-02-09 2020-06-02 林锦国 一种汽车减震机构
CN109494046A (zh) * 2018-11-15 2019-03-19 王笑梅 一种油浸式缓冲变压器及缓冲方法

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