CN112032247A - New energy automobile damping device convenient to installation - Google Patents
New energy automobile damping device convenient to installation Download PDFInfo
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- CN112032247A CN112032247A CN202010924574.3A CN202010924574A CN112032247A CN 112032247 A CN112032247 A CN 112032247A CN 202010924574 A CN202010924574 A CN 202010924574A CN 112032247 A CN112032247 A CN 112032247A
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- Prior art keywords
- sleeve
- fixedly connected
- new energy
- energy automobile
- damping device
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
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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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a new energy automobile damping device convenient to install, which comprises a main damping mechanism and an auxiliary damping mechanism, wherein the main damping mechanism consists of an upper supporting seat, a lower supporting seat, a damping spring, a sleeve, a sliding rod and a buffer spring, the auxiliary damping mechanism is fixedly connected with the upper surface of the upper supporting seat, the auxiliary damping mechanism consists of a movable rod, a sliding sleeve, a fixed sleeve, an electromagnet, a permanent magnet and an external electric control system, the upper surface of the movable rod is fixedly connected with a spline sleeve, the outer surface of the fixed column is sleeved with a clamping sleeve, and one side of an installation hole is fixedly connected with an installation seat. This new energy automobile damping device convenient to installation through the setting of mount pad, has reached the purpose of easy to assemble with the dismantlement, through the setting of spline housing, has reached the purpose of easy to assemble, through main damper and supplementary damper's setting, has reached the purpose that improves the shock attenuation effect.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile damping device convenient to install.
Background
The shock Absorber (Absorber), the shock Absorber is mainly used to restrain the shock and the impact from the road surface when the spring absorbs the shock and rebounds. When the shock absorber passes through the uneven road surface, although the shock absorbing spring can filter the shock of the road surface, the spring can still reciprocate, and the shock absorber is used for inhibiting the spring from jumping. Along with the development of economy, the improvement of people's standard of living, people also improve thereupon to the travelling comfort requirement of vehicle, in order to make the quick decay of frame and the vibration of automobile body, improve the ride comfort and the travelling comfort that the car went, generally all be equipped with the bumper shock absorber on the automobile suspension system, what extensively adopted on the car is the two-way effect cylinder bumper shock absorber, the bumper shock absorber difference with ordinary spring shock attenuation, the jump that produces when can restraining the flexible of spring is common spare part on the car.
The existing damping device of the new energy automobile has the following defects: the damping device is mainly installed and fixed by adopting movable bolts and movable nuts, most of the damping device is installed and detached by means of other tools when being installed and detached, great inconvenience is brought to workers, the damping device basically damps the shock for a single damping spring, the elastic capacity of the damping spring in different temperature environments is different, the damping effect is unstable, and the damping device is complex in structure and short in service life.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the new energy automobile damping device which is convenient to install, has the advantages of convenience in installation, good damping effect and the like, and solves the problems of inconvenience in installation and disassembly, unstable damping effect and complex structure.
(II) technical scheme
In order to realize the purposes of convenient installation and good damping effect, the invention provides the following technical scheme: the utility model provides a new energy automobile damping device convenient to installation, includes main damper and supplementary damper, main damper comprises upper support seat, lower carriage, damping spring, sleeve, slide bar, buffer spring, supplementary damper is connected with upper support seat upper surface fixed, supplementary damper comprises movable rod, sliding sleeve, fixed cover, electro-magnet, permanent magnet and outside electrical system, the last fixed surface of movable rod is connected with the spline housing, the inside of spline housing is pegged graft there is the spline, the bottom surface fixedly connected with fixed column of lower carriage, the cutting ferrule has been cup jointed to the surface of fixed column, the mounting hole has been seted up in the outside of cutting ferrule, one side fixedly connected with mount pad of mounting hole.
Preferably, damping spring's upper surface and the bottom surface fixed connection of last supporting seat, damping spring's lower surface and the upper surface fixed connection of lower carriage, sleeve and slide bar set up the inside at damping spring.
Preferably, the lower surface of the sleeve is fixedly connected with the middle part of the lower supporting seat, the sliding rod is inserted into the sleeve, and the upper end of the sliding rod is fixedly connected with the middle part of the lower surface of the upper supporting seat.
Preferably, the ladder groove has been seted up to telescopic inside, the one end fixed connection inserted block of slide bar, the inserted block sets up the inside in ladder groove, buffer spring sets up under the inserted block, the equal fixedly connected with spring holder in buffer spring's both ends, lower extreme the last fixed surface of spring holder and under bracing seat is connected.
Preferably, the movable rod is inserted in the sliding sleeve, the bottom of the sliding sleeve is fixedly connected with the upper surface of the upper supporting seat, and one end of the movable rod is fixedly connected with the fixed sleeve.
Preferably, the fixed sleeve is arranged in the sliding sleeve, the electromagnet is arranged in the fixed sleeve, the permanent magnet is arranged under the electromagnet, and the bottom of the permanent magnet is fixedly connected with the middle part of the upper surface of the upper supporting seat.
Preferably, the electromagnet consists of an iron core and a coil, and the coil is in conductive connection with an external electric control system through a lead.
Preferably, the lower extreme of fixed column is provided with the boss of notch cuttype, the inside of cutting ferrule is provided with the ladder draw-in groove, the lower extreme looks adaptation of ladder draw-in groove and fixed column.
Preferably, a threaded rod is inserted into the mounting hole, a rotating handle is fixedly connected to one end of the threaded rod, a nut is arranged inside the mounting seat, a groove matched with the nut is formed in the mounting seat, the nut is arranged inside the groove, and the other end of the threaded rod is in threaded connection with the nut.
(III) advantageous effects
Compared with the prior art, the invention provides the new energy automobile damping device convenient to install, and the damping device has the following beneficial effects:
1. this new energy automobile damping device convenient to installation, through the setting of mount pad, through the cooperation of mount pad with threaded rod and turning handle when using, can manual installation and dismantlement, possessed and need not use other instrument can realize installation and dismantlement, reached the purpose of easy to assemble and dismantlement, through the setting of spline housing, realized easy to assemble and convenient fixed ability through the cooperation of spline and spline housing when using, reached easy to assemble's purpose.
2. This new energy automobile damping device convenient to installation, setting through main damper and supplementary damper, carry out main shock attenuation through damping spring in the use, through the principle that like poles attract opposite poles repel each other between electro-magnet and the permanent magnet, carry out the supplementary shock attenuation of magnetic force, make this new energy automobile damping device convenient to installation can carry out the shock attenuation of different modes, the influence of temperature to damping device has been reduced, the purpose that improves the shock attenuation effect has been reached, setting through damping spring and electro-magnet, simple structure has been reached, it is less to receive the external influence, life's purpose is improved.
Drawings
Fig. 1 is a schematic front view of a damping device of a new energy vehicle, which is convenient to install and provided by the invention;
FIG. 2 is a schematic diagram of an internal structure of a main damping mechanism of a damping device of a new energy automobile, which is convenient to install and provided by the invention;
fig. 3 is a left side view structural schematic diagram of a clamping sleeve of a damping device of a new energy automobile convenient to mount, which is provided by the invention;
FIG. 4 is a schematic view of the internal structure of the part A in FIG. 1 of the damping device for a new energy vehicle convenient to install according to the present invention;
FIG. 5 is a schematic view of the internal structure of the part B in FIG. 1 of the damping device for a new energy vehicle convenient to install according to the present invention;
fig. 6 is a schematic three-dimensional structure diagram of a clamping sleeve of a damping device of a new energy automobile convenient to mount.
In the figure: 1. an upper support base; 2. a lower support seat; 3. a damping spring; 4. a sleeve; 5. a slide bar; 6. a buffer spring; 7. a movable rod; 8. a sliding sleeve; 9. fixing a sleeve; 10. an electromagnet; 11. a permanent magnet; 12. an external electronic control system; 13. a spline housing; 14. a spline; 15. fixing a column; 16. a card sleeve; 17. mounting holes; 18. a mounting seat; 19. inserting a block; 20. a threaded rod; 21. a handle is rotated; 22. and a nut.
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.
Referring to fig. 1-6, a new energy automobile damping device convenient to mount comprises a main damping mechanism and an auxiliary damping mechanism, wherein the main damping mechanism comprises an upper supporting seat 1, a lower supporting seat 2, a damping spring 3, a sleeve 4, a sliding rod 5 and a buffer spring 6, the upper surface of the damping spring 3 is fixedly connected with the bottom surface of the upper supporting seat 1, the lower surface of the damping spring 3 is fixedly connected with the upper surface of the lower supporting seat 2, the sleeve 4 and the sliding rod 5 are arranged inside the damping spring 3, the lower surface of the sleeve 4 is fixedly connected with the middle part of the lower supporting seat 2, the sliding rod 5 is inserted inside the sleeve 4, the upper end of the sliding rod 5 is fixedly connected with the middle part of the lower surface of the upper supporting seat 1, a stepped groove is formed inside the sleeve 4, one end of the sliding rod 5 is fixedly connected with an insert block 19, the insert block 19 is arranged inside the stepped groove, the buffer spring 6 is arranged right below, the two ends of the buffer spring 6 are fixedly connected with spring seats, the lower end spring seat is fixedly connected with the upper surface of the lower support seat 2, the auxiliary damping mechanism is fixedly connected with the upper surface of the upper support seat 1, the auxiliary damping mechanism comprises a movable rod 7, a sliding sleeve 8, a fixed sleeve 9, an electromagnet 10, a permanent magnet 11 and an external electric control system 12, the movable rod 7 is inserted in the sliding sleeve 8, the bottom of the sliding sleeve 8 is fixedly connected with the upper surface of the upper support seat 1, one end of the movable rod 7 is fixedly connected with the fixed sleeve 9, the fixed sleeve 9 is arranged in the sliding sleeve 8, the electromagnet 10 is arranged in the fixed sleeve 9, the permanent magnet 11 is arranged under the electromagnet 10, the bottom of the permanent magnet 11 is fixedly connected with the middle part of the upper surface of the upper support seat 1, the electromagnet 10 comprises an iron core and a coil, the coil is electrically connected with the external electric control system 12 through a lead, the upper, spline housing 13's inside is pegged graft there is spline 14, the bottom surface fixedly connected with fixed column 15 of lower support base 2, cutting ferrule 16 has been cup jointed to fixed column 15's surface, fixed column 15's lower extreme is provided with the boss of notch cuttype, cutting ferrule 16's inside is provided with the ladder draw-in groove, the lower extreme looks adaptation of ladder draw-in groove and fixed column 15, mounting hole 17 has been seted up in cutting ferrule 16's the outside, one side fixedly connected with mount pad 18 of mounting hole 17, threaded rod 20 is pegged graft to the inside of mounting hole 17, the one end fixedly connected with turning handle 21 of threaded rod 20, the inside nut 22 that is provided with of mount pad 18, the inside of mount pad 18 seted up with nut 22 assorted recess, nut 22 sets up the inside at the.
When the automobile shock absorber is used, a clamping sleeve 16 at the lower end of the device is welded at a corresponding place, a fixed column 15 is inserted into the clamping sleeve 16, a threaded rod 20 is inserted into an installation hole 17, a rotating handle 21 is rotated, the threaded rod 20 is in threaded connection with a nut 22 in an installation seat 18, the fixed column 15 and the clamping sleeve 16 are clamped, the purpose of convenient fixation is achieved, a spline sleeve 13 at the upper end of the device is fixedly connected with a position corresponding to the outside through a spline 14, when the automobile vibrates during running, a shock absorption spring 3 stretches, a sliding rod 5 moves in a sleeve 4, an insertion block 19 at one end of the sliding rod 5 is extruded with a buffer spring 6 in the sleeve 4, the purposes of shock absorption and buffering are achieved, when the temperature changes greatly, the elastic capacity of the shock absorption spring 3 changes due to the change of the temperature, an external electric control system 12 is started at the moment, the electromagnet 10 is electrified to generate a magnetic field with opposite acting force between the electromagnet 10 and the permanent magnet 11, and the two magnetic fields repel each other to achieve the purpose of auxiliary shock absorption.
In conclusion, the damping device for the new energy automobile convenient to mount can be manually mounted and dismounted through the matching of the mounting base 18 and the threaded rod 20 and the rotating handle 21 when in use through the arrangement of the mounting base 18, has the advantages that the mounting and dismounting can be realized without other tools, the purpose of convenient mounting and dismounting is achieved, the capability of convenient mounting and convenient fixing is achieved through the matching of the spline 14 and the spline sleeve 13 when in use through the arrangement of the spline sleeve 13, the purpose of convenient mounting is achieved, the damping spring 3 is used for main damping through the arrangement of the main damping mechanism and the auxiliary damping mechanism, magnetic auxiliary damping is carried out through the principle that like poles attract each other and opposite poles repel each other between the electromagnet 10 and the permanent magnet 11, the damping device for the new energy automobile convenient to mount can carry out damping in different modes, and the influence of temperature on the damping device is reduced, the purpose of improving the damping effect is achieved, and the purposes of being simple in structure, small in external influence and long in service life are achieved through the arrangement of the damping spring 3 and the electromagnet 10.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a new energy automobile damping device convenient to installation, includes main damper and supplementary damper, its characterized in that: the main damping mechanism consists of an upper supporting seat (1), a lower supporting seat (2), a damping spring (3), a sleeve (4), a sliding rod (5) and a buffer spring (6), the auxiliary damping mechanism is fixedly connected with the upper surface of the upper supporting seat (1), the auxiliary damping mechanism consists of a movable rod (7), a sliding sleeve (8), a fixed sleeve (9), an electromagnet (10), a permanent magnet (11) and an external electric control system (12), the upper surface of the movable rod (7) is fixedly connected with a spline housing (13), a spline (14) is inserted in the spline housing (13), a fixed column (15) is fixedly connected to the bottom surface of the lower supporting seat (2), a clamping sleeve (16) is sleeved on the outer surface of the fixed column (15), the outer side of the clamping sleeve (16) is provided with a mounting hole (17), and one side of the mounting hole (17) is fixedly connected with a mounting seat (18).
2. The new energy automobile damping device convenient to install of claim 1, characterized in that: the upper surface of damping spring (3) and the bottom surface fixed connection of last supporting seat (1), the lower surface of damping spring (3) and the upper surface fixed connection of lower carriage (2), sleeve (4) and slide bar (5) set up the inside at damping spring (3).
3. The new energy automobile damping device convenient to install according to claim 2, characterized in that: the lower surface of the sleeve (4) is fixedly connected with the middle part of the lower supporting seat (2), the sliding rod (5) is inserted in the sleeve (4), and the upper end of the sliding rod (5) is fixedly connected with the middle part of the lower surface of the upper supporting seat (1).
4. The new energy automobile damping device convenient to install of claim 1, characterized in that: the ladder groove has been seted up to the inside of sleeve (4), the one end fixed connection inserted block (19) of slide bar (5), inserted block (19) set up in the inside in ladder groove, buffer spring (6) set up under inserted block (19), the equal fixedly connected with spring holder in both ends of buffer spring (6), lower extreme the last fixed surface of spring holder and under bracing seat (2) is connected.
5. The new energy automobile damping device convenient to install of claim 1, characterized in that: the movable rod (7) is inserted in the sliding sleeve (8), the bottom of the sliding sleeve (8) is fixedly connected with the upper surface of the upper supporting seat (1), and one end of the movable rod (7) is fixedly connected with the fixed sleeve (9).
6. The new energy automobile damping device convenient to install of claim 1, characterized in that: fixed cover (9) set up the inside at sliding sleeve (8), electro-magnet (10) set up the inside at fixed cover (9), permanent magnet (11) set up under electro-magnet (10), the bottom of permanent magnet (11) and the middle part fixed connection of last supporting seat (1) upper surface.
7. The new energy automobile damping device convenient to install of claim 1, characterized in that: the one end and fixed cover (9) fixed connection of movable rod (7), fixed cover (9) set up the inside at sliding sleeve (8), electro-magnet (10) set up the inside at fixed cover (9), permanent magnet (11) set up under electro-magnet (10), the bottom of permanent magnet (11) and the middle part fixed connection of last supporting seat (1) upper surface, electro-magnet (10) have and constitute by iron core and coil, the coil passes through wire and outside electrical system (12) electrically conductive connection.
8. The new energy automobile damping device convenient to install of claim 1, characterized in that: the lower extreme of fixed column (15) is provided with the boss of notch cuttype, the inside of cutting ferrule (16) is provided with the ladder draw-in groove, the lower extreme looks adaptation of ladder draw-in groove and fixed column (15).
9. The new energy automobile damping device convenient to install of claim 1, characterized in that: the threaded rod (20) is inserted into the mounting hole (17), one end of the threaded rod (20) is fixedly connected with a rotating handle (21), a nut (22) is arranged inside the mounting seat (18), a groove matched with the nut (22) is formed in the mounting seat (18), the nut (22) is arranged inside the groove, and the other end of the threaded rod (20) is in threaded connection with the nut (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010924574.3A CN112032247A (en) | 2020-09-05 | 2020-09-05 | New energy automobile damping device convenient to installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010924574.3A CN112032247A (en) | 2020-09-05 | 2020-09-05 | New energy automobile damping device convenient to installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112032247A true CN112032247A (en) | 2020-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010924574.3A Withdrawn CN112032247A (en) | 2020-09-05 | 2020-09-05 | New energy automobile damping device convenient to installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112032247A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB588137A (en) * | 1943-04-30 | 1947-05-15 | Barr & Stroud Ltd | Improvements in or connected with vibration damping mountings for optical observation instruments |
| CN202349089U (en) * | 2011-12-14 | 2012-07-25 | 上海天合石油工程股份有限公司 | Shock absorber |
| CN207068452U (en) * | 2017-08-23 | 2018-03-02 | 天津市美声达乐器有限公司 | A kind of clarinet flute head card |
| CN108189908A (en) * | 2018-02-28 | 2018-06-22 | 常熟虞通光电科技有限公司 | A kind of motor turning damper |
| CN108612804A (en) * | 2018-06-27 | 2018-10-02 | 陈清 | A kind of motorcycle vibration absorber that damping effect is excellent |
| CN108799382A (en) * | 2018-07-05 | 2018-11-13 | 黄桂芳 | A kind of new-energy automobile damping device being easily installed |
| CN108807756A (en) * | 2018-06-08 | 2018-11-13 | 张志军 | New-energy automobile power battery protective housing damping |
| CN110630676A (en) * | 2019-10-25 | 2019-12-31 | 苏州富瑞特铝合金升降机械有限公司 | Buffer gear for elevator |
-
2020
- 2020-09-05 CN CN202010924574.3A patent/CN112032247A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB588137A (en) * | 1943-04-30 | 1947-05-15 | Barr & Stroud Ltd | Improvements in or connected with vibration damping mountings for optical observation instruments |
| CN202349089U (en) * | 2011-12-14 | 2012-07-25 | 上海天合石油工程股份有限公司 | Shock absorber |
| CN207068452U (en) * | 2017-08-23 | 2018-03-02 | 天津市美声达乐器有限公司 | A kind of clarinet flute head card |
| CN108189908A (en) * | 2018-02-28 | 2018-06-22 | 常熟虞通光电科技有限公司 | A kind of motor turning damper |
| CN108807756A (en) * | 2018-06-08 | 2018-11-13 | 张志军 | New-energy automobile power battery protective housing damping |
| CN108612804A (en) * | 2018-06-27 | 2018-10-02 | 陈清 | A kind of motorcycle vibration absorber that damping effect is excellent |
| CN108799382A (en) * | 2018-07-05 | 2018-11-13 | 黄桂芳 | A kind of new-energy automobile damping device being easily installed |
| CN110630676A (en) * | 2019-10-25 | 2019-12-31 | 苏州富瑞特铝合金升降机械有限公司 | Buffer gear for elevator |
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Application publication date: 20201204 |
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| WW01 | Invention patent application withdrawn after publication |