CN106704458A

CN106704458A - Automobile shock absorber

Info

Publication number: CN106704458A
Application number: CN201611227079.7A
Authority: CN
Inventors: 窦贵昊; 马鹏程; 窦省委
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2017-05-24

Abstract

The invention discloses an automobile shock absorber. The automobile shock absorber comprises a buffer connected with an automobile adapter, wherein the buffer comprises a buffer housing; the buffer housing is provided with a piston cavity; a buffering piston shaft is mounted in the piston cavity in a sliding manner; a damping cylinder is arranged in the piston cavity; a reset spring is arranged in the damping cylinder; a lubricating oil inlet channel is formed in the buffer housing; an oil storage tank is formed in one side located on the lubricating oil inlet channel, of the buffer housing; a plurality of through holes are formed in the damping cylinder; the through holes communicate with the piston cavity and the oil storage tank; a lubricating oil discharging channel is formed in one side, away from the lubricating oil inlet channel, of the buffer housing; and damping channels which are respectively formed in two sides of the piston and communicate with the buffering piston shaft are arranged on the piston of the buffering piston shaft. According to the shock absorber disclosed by the invention, through unique structural design, multiple beneficial effects are archived, so that the shock absorber has good application prospects and latent industrial productive capacity in the automobile manufacturing field and the shock absorber field.

Description

A kind of automobile absorber

Technical field

The present invention relates to a kind of damper, relate more particularly to a kind of automobile absorber, belong to damper technical field.

Background technology

In order that vehicle frame is decayed rapidly with the vibration of vehicle body, improve the ride comfort and comfortableness of running car, automotive suspension Damper is typically equipped with system, damper is the rapid wear accessory during automobile use, and damper work quality will be direct The stationarity of running car and the life-span of other parts are influenceed, therefore damper should be made often in good working order.

Damper be mainly used to suppress spring shock-absorbing after rebound when concussion and the impact from road surface, for the bent axle that contends with Twisting vibration (i.e. the impulsive force of bent axle subject cylinder igniting and the phenomenon that twists), because flexible member is hit in suspension system Vibration is produced, to improve vehicle running smoothness, damper is installed in parallel with flexible member in suspension, for decay is vibrated, automobile It is hydraulic damping damper that damper is used in suspension system mostly, and the structure of damper is the piston rod insertion tube with piston Interior, full of oil in cylinder, piston is provided with choke valve so that the oil in two parts space separated by piston can be mutual Supplement, its operation principle be when vehicle frame (or vehicle body) and between vehicle bridge it is vibrated there is relative motion when, on the piston in damper Lower movement, the fluid in snubber cavity is just repeatedly flowed into another chamber from a chamber by choke valve, and flow is smaller, damping Power is bigger, and the viscosity of oil is bigger, and damping force is bigger, if throttle orifice size is constant, when damper operating rate is fast, damps Absorption of the conference influence to impacting.

At present, people have carried out substantial amounts of further investigation to damper, and achieve many achievements, for example：

CN105936199A discloses a kind of automobile absorber assembly, and the automobile absorber assembly includes damper, subtracts Shake device seat body, wheel cover body, wheel cover reinforcing plate and connecting plate；Shock absorber bearing body is welded on the surface of wheel cover body and subtracts One side of shake device seat body is welded on the first face of wheel cover reinforcing plate, and a side of wheel cover body is welded on wheel cover and adds On first face of strong plate；The cross section of connecting plate is anti-" Z " sub- shape, including the first solder side, inclined-plane and the second solder side, first Solder side is welded on the second face of wheel cover reinforcing plate, and the second solder side includes the first welding region, the second welding region and the Three welding regions.By setting the connecting plate that cross section is anti-" Z " sub- shape so that pass to wheel cover body and damping from damper Device seat body on load can be evenly dispersion, improve the intensity of vibration damper assembly.

CN104343883A discloses a kind of automobile absorber, including the cylinder body with piston rod, the main work in cylinder body Plug and auxiliary piston, described main piston are fixed on piston rod one end, oil leak hole are provided with described main piston and auxiliary piston, The two ends of described cylinder body are provided with damping device, and described auxiliary piston is connected on main piston by spring, described master Buffering ball is provided between piston and auxiliary piston, described cylinder body is provided with oil filler point, to the shock of cylinder body end face when it is used Power is small, and cylinder body is difficult to be destroyed.

CN104806684A discloses a kind of automobile damper structure, including cylinder body, and inner wall surface thereof is into smooth knot Structure, is provided with piston in cylinder body, internal piston is inserted with push rod, and the 3rd cylinder cap is provided with positioned at cylinder body afterbody, itself and push rod it Between the first spring is installed, the 3rd cylinder cap into terraced structure, at the step surface of the 3rd cylinder cap and outside piston side face between pacify Swash pipe equipped with shaking, the outer circumference surface of sharp pipe that shakes is fitted with the internal face of cylinder body；Piston rod is also equipped with cylinder body, it passes through star Circle is provided with energy-absorbing piston, and the second cylinder cap is installed between its left side and piston rod head, and its outer circumference surface is formed with step, the Positioning sleeve is installed between the step surface of two cylinder cap and the sharp end surfaces that shake, its outer circumference surface is fitted with the internal face of cylinder body, positions Gap is left between the inner peripheral surface and outside piston side face of set；Cylinder cap is installed on the piston rod at cylinder head, is inhaled Second spring can be installed between piston right-hand member and cylinder cap.It is easy to process, low cost.

CN105240440A discloses the rod set being arranged outside a kind of automobile absorber, including decoupling rod, decoupling rod bottom side, Described rod set is set in damping club body lower outside, and decoupling rod is slidably matched with rod set, and rod set axle center is provided with cooperation damping The axocoel of bar, the corresponding damping club body of rod set is provided with the annular teeth arranged along decoupling rod length direction, is provided with rod set many The gear of individual cooperation teeth, gear is circumferentially uniformly distributed along decoupling rod, and the gear cavity of mate gear, axle are provided with corresponding rod set Chamber, gear cavity are communicated, and are filled in axocoel, gear cavity and put sticky hydraulic oil liquid, and decoupling rod bottom is the piston structure of sphere, piston Inside configuration is provided with Y type oil ducts, and the corresponding damping club body sheathed spring in rod set top, damping is steady, and resiliency preferably, can Avoid abrasion, long service life.

CN105370790A discloses a kind of automobile absorber, and the automobile absorber includes：Supporting plate, piston rod, work Plug, cylinder body, the first return spring and permanent magnet, the supporting plate, piston rod and piston are sequentially affixed from top to bottom, and permanent magnet sets Put cylinder body outer end and with cylinder body Joint, piston is located in the cylinder body, and the supporting plate is located at the cylinder body upper surface Top, and the piston rod upper end, through the top of the cylinder body, first return spring is sleeved on the piston rod, And one end is connected with the supporting plate, the other end is fixed on the top of the cylinder body, overcome in the prior art damper long-term After use, it may appear that damping effect is deteriorated, the resilience of damper easily fails, the short problem of service life, so as to provide Kind in lasting good of long-term use process damping effect, damper resilience is strong, and long service life automobile absorber.

CN104329405A discloses a kind of Stability Analysis of Structures type automobile absorber, including the cylinder body with piston rod, positioned at cylinder Internal main piston and auxiliary piston, is provided with oil leak hole on described main piston and auxiliary piston, described main piston is fixed on Piston rod one end, is provided with oil filler point on described cylinder body, the two ends of described cylinder body are provided with damping device, and described subtracts Shake device is provided with a circle water proof ring with piston rod junction, and described auxiliary piston is connected to main piston by least two springs On, buffering ball is provided between described main piston and auxiliary piston, its Stability Analysis of Structures, to the impact of cylinder body end face when using Small, cylinder body is difficult to be destroyed.

As described above, disclose various automobile absorbers in the prior art, but for new automobile absorber assembly, still In the presence of necessity and demand for continuing to research and develop, this not only has urgent researching value, it may have good economic benefit and industry Application potential, this is leaned on where power that exactly present invention is accomplished with basis.

The content of the invention

In order to research and develop the automobile absorber assembly of novelty, the present inventor has made intensive studies to this, is paying After a large amount of creative works, so as to complete the present invention.

Specifically, the technical problems to be solved by the invention are：A kind of automobile absorber is provided, by damping system and profit Sliding system is connected, and hydraulic damping damper cylinder is compensated using lubricating oil, simplifies structure, extends hydraulic damping damping The service life of device.

In order to solve the above technical problems, the technical scheme is that：A kind of automobile absorber, the automobile shock are provided Device includes the buffer of connection vehicle transit disk, and the buffer includes buffer housing, and the buffer housing has piston Chamber, is slidably fitted with damper piston axle in the plunger shaft, the damper piston axle is connected with the vehicle transit disk, described Damping cylinder is provided with plunger shaft, piston outside of the damping jacket casing loaded on the damper piston axle is provided with the damping cylinder Back-moving spring, the back-moving spring is located in the rodless cavity of the plunger shaft and relies on the piston of the damper piston axle On, the damper piston axle has the guide part stretched into the buffer case body near one end of the back-moving spring, described Buffer housing is provided with lubricating oil oil inlet passage, is provided with positioned at the lubricating oil oil inlet passage side in the buffer housing One oil storage tank, described lubricating oil oil inlet passage one end connects the oil storage tank, and the other end connects the buffer housing afterbody Lubricating oil oil-in, the damping cylinder is located between the oil storage tank and plunger shaft, and the damping cylinder is provided with some through holes, institute Through hole the connection plunger shaft and the oil storage tank are stated, the through hole is arranged along the axial direction of the damping cylinder, the buffer case Lubricating oil oil discharge passage is provided with away from the lubricating oil oil inlet passage side on body, described lubricating oil oil discharge passage one end connects institute The one end of plunger shaft away from the piston is stated, the other end connects the lubricating oil oil-out of the buffer housing afterbody；The resistance Buddhist nun's cylinder offers at least one breach near the end of the back-moving spring；Institute is communicated with the piston of the damper piston axle State the damp channel of the piston both sides of damper piston axle；Lubricating oil pipeline connects the lubricating oil oil-in and the lubrication respectively Oily oil-out；

The buffer housing has an external part extended to the vehicle transit disk, and the damper piston axle runs through The external part, second fixing end is fixedly installed on the external part (be installed on the outer wall of the external part)；

Lubrication channel is provided with the external part, described lubrication channel one end connects the lubricating oil oil discharge passage, another The end connection damper piston axle.

By being provided with lubrication channel in the external part, and it is fuel-displaced described lubrication channel one end is connected the lubricating oil Passage, the other end connects the damper piston axle, and structure design so may be such that damper piston axle is hindered by impact When Buddhist nun buffers, lubricating oil can drain into lubrication channel, and the surface to damper piston axle is lubricated, and unnecessary lubricating oil is then by lubricating Oily oil discharge passage drains into other oil sites, not only saves lubricating oil, and by impulsive force, saves lubricating power, it is not necessary to Frequently enable grease pump and be capable of achieving lubrication, have very important significance.

In the automobile absorber of the invention, as a kind of perferred technical scheme, the damp channel is near institute The sectional area of back-moving spring one end is stated less than the sectional area away from described back-moving spring one end, away from described in the back-moving spring Steel ball is provided with damp channel.

By structure design so, may be such that the steel ball plays a part of check valve, when damper piston axle is rushed When hitting power retraction, steel ball is removed, and damp channel is opened, and the lubricating oil in rodless cavity enters rod chamber by damp channel, and presses Contracting back-moving spring, so as to also play damping shock absorption effect.

In the automobile absorber of the invention, as a kind of perferred technical scheme, near institute on the damping cylinder State the circulating face of the circulation area more than the through hole away from described back-moving spring one end of the through hole of back-moving spring one end Product.

By structure design so, so that when damper piston axle is stretched by external impacts, in damming for steel ball Under effect, damp channel is closed, and lubricating oil can not be flowed from rod chamber to rodless cavity, and can only enter rod chamber by rodless cavity, But throttling action is produced due to the change of through hole sectional area, lubricating oil is gradually subtracted by plunger shaft into the oil inlet quantity of oil storage tank It is few, so as to serve good damping shock absorption effect.

In the automobile absorber of the invention, as a kind of perferred technical scheme, the vehicle transit disk and institute State and be provided between buffer housing dust cover, the damper piston shaft extension goes out the part of the buffer housing through described dust-proof Cover.

By structure design so, on the one hand the dust cover can stop that dust is attached on damper piston axle, have Effect ground protects the potted component such as oil sealing, rubber ring in buffer, extends the service life of damper of the present invention, and Elastic shock attenuation effect is arrived.

In the automobile absorber of the invention, the dust cover is not particularly limited, can be by field of shock absorption Any common elastic material be made, but as a kind of perferred technical scheme, the dust cover is made for macromolecular material Dust cover.

Wherein, the dust cover can be the various synthetic rubber with favorable elasticity, such as nitrile rubber, EP rubbers, fourth Any one in benzene rubber, neoprene, butyl rubber etc..

But outside above-mentioned and following Unique physical design, inventor has also carried out continuing to improve to the dust cover, After creative work has been paid, so as to further increase the performances such as the anti-aging, heat-resisting of the dust cover, elastic shock attenuation, The more excellent dust cover of performance is obtained.

Specifically, it is highly preferred that the dust cover includes the component of following mass fraction：Three groups of 107-113 mass parts Composite elastic base-material, 1-2 mass parts length is divided to be SiC whiskers, the 1-2 mass parts thiodipropionic acid dilauryl cinnamic acids of 0.1-0.2mm Ester, 0.1-0.3 mass parts di-n-butyltin dilaurate, 0.2-0.3 mass parts ethylene-vinyl acetate copolymer (EVA), 0.6-0.9 mass parts methacryloxypropyl trimethoxy silane, 1-1.2 mass parts 4,4'- diamino bicyclic hexyl first Alkane and 2-3 mass parts granularity are the SiO 2 powder of 50-100nm.

Wherein, the three components composite elastic base-material is by mass ratio 100:5-10:The nitrile rubber of 2-3, phenylethylene heat Thermoplastic elastic (TPES) and polyamide-type thermoplastic elastomer (TPAE) are constituted.

Wherein, above-mentioned various materials are all the known materials in this area, can be commercially available by various commercial channel, This is no longer going to repeat them.

Even more preferably, present invention also offers the preparation method of the preferred dust cover, the preparation method bag Include following steps：

S1：It is 0.1-0.2mm's to weigh the component composite elastic base-material of 107-113 mass parts three, 1-2 mass parts length respectively SiC whiskers, 1-2 mass parts thiodipropionic acid dilauryl cinnamic acids ester, 0.1-0.3 mass parts di-n-butyltin dilaurate, 0.2-0.3 Mass parts ethylene-vinyl acetate copolymer (EVA), 0.6-0.9 mass parts methacryloxypropyl trimethoxy silane, 1-1.2 mass parts 4,4'- diamino bicyclic hexyl methane and 2-3 mass parts granularity are the SiO 2 powder of 50-100nm；

S2：To addition SiC whiskers, thiodipropionic acid dilauryl cinnamic acid ester, ethyl vinyl acetate second in three component composite elastic base-materials Enoate copolymer (EVA), the methacryloxypropyl trimethoxy silane for total consumption 20-30% and be total consumption 70- 80% 4,4'- diamino bicyclic hexyl methane, gained mixture is sufficiently mixed at 120-140 DEG C in high-speed mixer Uniformly, base-material is obtained；

S3：To the methyl that di-n-butyltin dilaurate, SiO 2 powder, residue 70-80% are added in the base-material 4, the 4'- diamino bicyclic hexyl methane of acryloxypropyl trimethoxy silane and residue 20-30%, by gained mixture Continue after full and uniform mixing at 120-140 DEG C, obtain can injected plastics material, then carry out injection moulding, it is described so as to obtain Dust cover.

Used in step s 2 whole consumptions (i.e. listed consumption in step S1) three component composite elastic base-materials, SiC whiskers, thiodipropionic acid dilauryl cinnamic acid ester and ethylene-vinyl acetate copolymer (EVA), and it is incorporated as total consumption (i.e. Listed consumption in step S1) 20-30% methacryloxypropyl trimethoxy silane and be total consumption (i.e. in step S1 Listed consumption) 70-80% 4,4'- diamino bicyclic hexyl methane；And whole consumptions (i.e. step is added in step s3 Listed consumption in S1) di-n-butyltin dilaurate and SiO 2 powder, and remaining methacryloxypropyl three Methoxy silane and remaining 4,4'- diamino bicyclics hexyl methane.

The inventors discovered that, when using above-mentioned specific components and specific preparation method, the dust cover for obtaining has non- Many performances of Chang Youyi, such as performance such as high resiliency, heat resistant.So as to using being conventionally synthesized outside rubber, have Further preferably select.

Certainly, this is that dust cover of the present invention is preferably selected, completely can be using conventional synthetic rubber, can not Also there is no need the requirement present invention must be defined to above-mentioned preferred dust cover by the dust cover, and this will reduce without doubt The present invention should protection domain, and damage the deserved protection rights and interests and more upper protection domain of applicant.

In the automobile absorber of the invention, as a kind of perferred technical scheme, the dust cover has connection First fixing end of the vehicle transit disk and the second fixing end of the connection buffer housing.

In the automobile absorber of the invention, as a kind of perferred technical scheme, set on the vehicle transit disk There is top rubber cushion, first fixing end is fixedly connected on the top rubber cushion, and the damper piston axle is fixed with described first End is in contact, and first fixing end is solid construction, is opened up and the damper piston axle phase in the damper piston shaft position The through hole of adaptation, formation is slidingly sealed structure.

By structure design so, can be formed and be slidingly sealed structure, serve good fixation and elastic buffer Effect.

In the automobile absorber of the invention, as a kind of perferred technical scheme, institute is located in the dust cover State and compaction cavum be provided between the first fixing end and second fixing end, the damper piston axle runs through the compaction cavum, The cavity wall of the compaction cavum is accordion.

By structure design so, the dust cover namely the compaction cavum can realize elastic telescopic, so that real The elastic shock attenuation effect of dust cover is showed.

In the automobile absorber of the invention, as a kind of perferred technical scheme, the vehicle transit disk with it is slow Rush between device housing and be provided with compression spring.

It is as a kind of perferred technical scheme, solid on the vehicle transit disk in the automobile absorber of the invention Dingan County is equipped with the first spring base, and first spring base is installed on the top rubber cushion, is fixedly mounted in the buffer housing There is second spring seat, the compression spring is clamped between first spring base and second spring seat.

By structure design so, compression spring secondary buffer serves cushioning effect, so as to reduce buffer The oil pressure of lubricating oil during damping, reduces the pressure oscillation of oil lubrication system.

In the automobile absorber of the invention, as a kind of perferred technical scheme, the end of the external part is consolidated Surely there is a dust cap, oil sealing and guide pad are provided with the external part, the oil sealing leans with the dust cap, the guiding Block is fixed on the inwall of the external part, and the damper piston axle runs through the guide pad, the oil sealing and the dust cap.

Damper piston axle can be risen by structure design so, the especially use of guide pad (can be rigid structural member) Good guide effect is arrived, it is to avoid eccentric when damper piston shaft extension goes out or retracts and cause potted component unbalance stress It is even, effectively extend the service life of damper of the present invention.

As described above, the invention provides the structure design that a kind of automobile absorber, the damper pass through uniqueness, so that Many beneficial effects are achieved, for example：

(1) because oil storage tank is connected with lubricating oil oil inlet passage and plunger shaft respectively, lubricating oil is directly used as liquid Pressure buffer carrier, it is not necessary to be separately provided Hydraulic Station and hydraulic circuit, the slow of buffer is realized using the lubricating oil of lubricating system Punching is acted on, and playing the lubricating oil in damping effect, and oil storage tank can play compensating action, and what is overflowed when buffering is unnecessary Lubricating oil just can enter lubricating oil oil discharge passage, and damper piston axle or other elements are lubricated, and reduce hydraulic pressure unit Part, simplifies structure, is easy to safeguard, improves performance.

(2) because the circulation area on damping cylinder near the through hole of back-moving spring one end is more than away from back-moving spring one end The circulation area of through hole, when damper piston axle is stretched by external impacts, under the effect of damming of steel ball, lubricating oil can not be by having Rod cavity flows to rodless cavity, and lubricating oil can only enter rod chamber by rodless cavity, and be produced by the change of through hole actual internal area Throttling action, lubricating oil is gradually decreased by plunger shaft into the oil inlet quantity of oil storage tank, is made so as to serve good damping shock absorption With.

(3) sectional area due to damp channel near back-moving spring one end is less than the sectional area away from back-moving spring one end, When damper piston axle is bounced back by impulsive force, the lubricating oil in rodless cavity enters rod chamber by damp channel, as piston is shifted to Compression spring, the circulation area of through hole is increasing, and the lubricating oil in oil storage tank more and more enters rod chamber, while compression Back-moving spring, so as to also play damping shock absorption effect.

(4) due to being provided with compression spring between vehicle transit disk and buffer housing, secondary buffer serves damping work With the oil pressure of lubricating oil during so as to reducing buffer damping reduces the pressure oscillation of oil lubrication system.

(5) because lubricating oil system is connected with damping fluid power oil system, when damper piston axle is subject to external impacts, delay While rushing piston shaft retraction, a lubricating oil part for plunger shaft enters rod chamber, the unnecessary lubrication of another part by rodless cavity It is oily then other oil sites are drained into by lubricating oil oil discharge passage, lubricating oil is not only saved, and by impulsive force, save lubrication Power, it is not necessary to frequently enable grease pump and be capable of achieving lubrication, have very important significance.

As described above, the invention provides the structure design that a kind of automobile absorber, the damper pass through uniqueness, so that Many beneficial effects are achieved, is had a good application prospect in automobile manufacturing field and damper field latent with industrialized production Power.

Brief description of the drawings

Fig. 1 is the structural representation of the automobile absorber of the embodiment of the present invention；

Fig. 2 is the partial enlargement structural representation of A in Fig. 1；

Fig. 3 is the structural representation of damping cylinder in the embodiment of the present invention；

Wherein, in Fig. 1 to Fig. 3, each number designation refers to following concrete meaning, element and/or part respectively.

In figure：1st, vehicle transit disk, 2, top rubber cushion, the 3, first spring base, 4, buffer housing, 401, plunger shaft, 402, Lubricating oil oil inlet passage, 403, lubricating oil oil discharge passage, 404, oil storage tank, 405, lubricating oil oil-in, 406, lubricating oil it is fuel-displaced Mouthful, 5, damper piston axle, 501, piston, 502, damp channel, 503, steel ball, 6, damping cylinder, 601, through hole, 602, breach, 7, Back-moving spring, 8, dust cover, the 801, first fixing end, the 802, second fixing end, 803, compaction cavum, 9, external part, 901, anti- Dirt lid, 902, oil sealing, 903, guide pad, 904, lubrication channel, 10, second spring seat, 11, compression spring.

Specific embodiment

The present invention is further described with reference to the accompanying drawings and examples.But the purposes and mesh of these exemplary embodiments Be only used for enumerate the present invention, any type of any restriction not is constituted to real protection scope of the invention, it is more non-to incite somebody to action this The protection domain of invention is confined to this.

The preparation of dust cover

Preparation example 1

S1：The component composite elastic base-material of 108 mass parts three is weighed respectively (by 100 mass parts nitrile rubbers, 5 mass parts benzene Ethene analog thermoplastic elastomer (TPES) and 3 mass parts polyamide-type thermoplastics elastomer (TPAE) are constituted), 1 mass parts length For the SiC whiskers of 0.1-0.2mm, 2 mass parts thiodipropionic acid dilauryl cinnamic acid esters, 0.1 mass parts di-n-butyltin dilaurate, 0.3 mass parts ethylene-vinyl acetate copolymer (EVA), 0.6 mass parts methacryloxypropyl trimethoxy silane, 1.2 mass parts 4,4'- diamino bicyclic hexyl methane and 2 mass parts granularities are the SiO 2 powder of 50-100nm；

S2：To addition SiC whiskers, thiodipropionic acid dilauryl cinnamic acid ester, ethyl vinyl acetate second in three component composite elastic base-materials Enoate copolymer (EVA), the methacryloxypropyl trimethoxy silane (i.e. 0.12 mass parts) for total consumption 20% and Be 4, the 4'- diamino bicyclic hexyls methane (i.e. 0.96 mass parts) of total consumption 80%, by gained mixture at 130 DEG C in height It is sufficiently mixed in fast mixer uniformly, obtains base-material；

S3：To the metering system that di-n-butyltin dilaurate, SiO 2 powder, residue 80% are added in the base-material Acryloxypropylethoxysilane trimethoxy silane (i.e. 0.48 mass parts) and remaining 20% 4,4'- diamino bicyclic hexyls methane are (i.e. 0.24 mass parts), gained mixture is continued after full and uniform mixing at 130 DEG C, obtain for preparing noting for dust cover Moulding material (obtains final product dust cover) after injection, be named as F1.

Preparation example 2

S1：The component composite elastic base-material of 112 mass parts three is weighed respectively (by 100 mass parts nitrile rubbers, 10 mass parts benzene Ethene analog thermoplastic elastomer (TPES) and 2 mass parts polyamide-type thermoplastics elastomer (TPAE) are constituted), 2 mass parts length For the SiC whiskers of 0.1-0.2mm, 1 mass parts thiodipropionic acid dilauryl cinnamic acid ester, 0.3 mass parts di-n-butyltin dilaurate, 0.2 mass parts ethylene-vinyl acetate copolymer (EVA), 0.9 mass parts methacryloxypropyl trimethoxy silane, 1 Mass parts 4,4'- diamino bicyclic hexyl methane and 3 mass parts granularities are the SiO 2 powder of 50-100nm；

S2：To addition SiC whiskers, thiodipropionic acid dilauryl cinnamic acid ester, ethyl vinyl acetate second in three component composite elastic base-materials Enoate copolymer (EVA), the methacryloxypropyl trimethoxy silane (i.e. 0.27 mass parts) for total consumption 30% and Be 4, the 4'- diamino bicyclic hexyls methane (i.e. 0.7 mass parts) of total consumption 70%, by gained mixture at 120 DEG C in height It is sufficiently mixed in fast mixer uniformly, obtains base-material；

S3：To the metering system that di-n-butyltin dilaurate, SiO 2 powder, residue 70% are added in the base-material Acryloxypropylethoxysilane trimethoxy silane (i.e. 0.63 mass parts) and remaining 30% 4,4'- diamino bicyclic hexyls methane (i.e. 0.3 Mass parts), gained mixture is continued after full and uniform mixing at 120 DEG C, obtain the be molded material for preparing dust cover Material (dust cover is obtained final product after injection), is named as F2.

Preparation example 3

S1：The component composite elastic base-material of 110 mass parts three is weighed respectively (by 100 mass parts nitrile rubbers, 7.5 mass parts Styrene analog thermoplastic elastomer (TPES) and 2.5 mass parts polyamide-type thermoplastics elastomer (TPAE) are constituted), 1.5 mass Part length is SiC whiskers, 1.5 mass parts thiodipropionic acid dilauryl cinnamic acid esters, the 0.2 mass parts tin dilaurate two of 0.1-0.2mm Normal-butyl tin, 0.25 mass parts ethylene-vinyl acetate copolymer (EVA), 0.8 mass parts methacryloxypropyl front three TMOS, 1.1 mass parts 4,4'- diamino bicyclic hexyl methane and 2.5 mass parts granularities are the silica of 50-100nm Powder；

S2：To addition SiC whiskers, thiodipropionic acid dilauryl cinnamic acid ester, ethyl vinyl acetate second in three component composite elastic base-materials Enoate copolymer (EVA), the methacryloxypropyl trimethoxy silane (i.e. 0.2 mass parts) for total consumption 25% and it is 4, the 4'- diamino bicyclic hexyls methane (i.e. 0.825 mass parts) of total consumption 75%, by gained mixture at 140 DEG C in height It is sufficiently mixed in fast mixer uniformly, obtains base-material；

S3：To the metering system that di-n-butyltin dilaurate, SiO 2 powder, residue 75% are added in the base-material Acryloxypropylethoxysilane trimethoxy silane (i.e. 0.6 mass parts) and remaining 25% 4,4'- diamino bicyclic hexyls methane are (i.e. 0.275 mass parts), gained mixture is continued after full and uniform mixing at 140 DEG C, obtain for preparing noting for dust cover Moulding material (obtains final product dust cover) after injection, be named as F3.

Comparative example 1-9

Comparative example 1-3：Three component composite elastic base-materials in respectively by embodiment 1-3 the step of S1 such as replace with the quality Outside one-component nitrile rubber, other operations are constant, so as to embodiment 1-3 is repeated, sequentially obtain comparative example 1-3, by institute Must be used to preparing dust cover can injected plastics material be sequentially named as D1, D2 and D3.

Comparative example 4-6：Three component composite elastic base-materials in respectively by embodiment 1-3 the step of S1 such as replace with the quality Outward, other operations are constant, so as to embodiment 1-3 is repeated, sequentially for one-component styrene analog thermoplastic elastomer (TPES) Obtain comparative example 4-6, by gained be used for prepare dust cover can injected plastics material be sequentially named as D4, D5 and D6.

Comparative example 7-9：Three component composite elastic base-materials in respectively by embodiment 1-3 the step of S1 such as replace with the quality Outward, other operations are constant, so as to embodiment 1-3 is repeated, sequentially for one-component polyamide-type thermoplastic elastomer (TPAE) Obtain comparative example 7-9, by gained be used for prepare dust cover can injected plastics material be sequentially named as D7, D8 and D9.

Comparative example 10-15

Comparative example 10-12：Except by all of methacryloxypropyl trimethoxy silane and 4,4'- diamino bicyclics Hexyl methane is disposable, and all addition is outer in step s 2, and its operation is constant, so as to embodiment 1-3 is repeated, sequentially obtains Comparative example 10-12, by gained be used for prepare dust cover can injected plastics material be sequentially named as D10, D11 and D12.

Comparative example 13-15：Except by all of methacryloxypropyl trimethoxy silane and 4,4'- diamino bicyclics Hexyl methane is disposable, and all addition is outer in step s3, and its operation is constant, so as to embodiment 1-3 is repeated, sequentially obtains Comparative example 13-15, by gained be used for prepare dust cover can injected plastics material be sequentially named as D13, D14 and D15.

Comparative example 16-21

Comparative example 16-18：Except all of methacryloxypropyl trimethoxy silane is disposable all in step Outside being added in S2 and disposably adding all of 4,4'- diamino bicyclics hexyl methane in step s3, it is operated not Become, so as to embodiment 1-3 is repeated, sequentially obtain comparative example 16-18, by gained be used for prepare dust cover can injected plastics material it is suitable It is secondary to be named as D16, D17 and D18.

Comparative example 19-21：Except all of methacryloxypropyl trimethoxy silane is disposable all in step Outside being added in S3 and disposably adding all of 4,4'- diamino bicyclics hexyl methane in step s 2, it is operated not Become, so as to embodiment 1-3 is repeated, sequentially obtain comparative example 19-21, by gained be used for prepare dust cover can injected plastics material it is suitable It is secondary to be named as D19, D20 and D21.

Performance test

To above-mentioned gained for prepare dust cover can injected plastics material carry out following multiple performance tests, it is specific as follows：

1st, according to standard GB/T/T 528-2009 operating procedure and code, to following differences can injected plastics material carry out The measure of elongation at break (testing its elastic performance), wherein represent within " 0 day " to prepare can injected plastics material enter immediately Row test, and expression in " 200 days " is tested after being placed 200 days at 35 DEG C according to same national standard.Overall result See the table below 1.

Table 1

As can be seen here：1st, when three component composite elastic base-materials are replaced with into any one-component, fracture is caused Elongation is significantly reduced, and is reduced when being especially single use polyamide-type thermoplastic elastomer (TPAE) significantly, this card It is bright to be mutually promoted when the mixture using these three materials, obtain best technique effect；2nd, methacryloxypropyl is worked as Base propyl trimethoxy silicane and 4,4'- diamino bicyclic hexyls methane are not added step by step as preparation method of the invention When, cause elongation at break have substantially attenuating (either both materials simultaneously in one step all addition, or Any one whole components are added in different steps), this demonstrate that when so substep adds preparation, can obtain best Technique effect.

2nd, resistance to elevated temperatures

By each can injected plastics material placed 75 hours at 90 DEG C, observe the mode of appearance of each sample, including color plus Whether whether deep, surface significantly viscosifies, with this investigate it is different can injected plastics material resistance to elevated temperatures, as a result see the table below in 2.

Table 2

Wherein：" light discolouration ", " micro- discoloration " and the discoloration of " discoloration " are deepened successively；" slight tacky ", " micro- hair It is viscous " and the tacky degree of " tacky " become weigh successively.

As can be seen here：1st, when three component composite elastic base-materials are replaced with into any one-component, high temperature resistant is led Performance decreases, when being especially single use polyamide-type thermoplastic elastomer (TPAE)；2nd, when methacryloxy third When base trimethoxy silane and 4,4'- diamino bicyclic hexyl methane are not added step by step as preparation method of the invention, Causing resistance to elevated temperatures has substantially attenuating (either both materials all additions in one step simultaneously, or in difference The step of in add any one whole components), especially D10-15 reduction significantly, this demonstrate that so substep plus When entering to prepare, best technique effect can be obtained.

Automobile absorber of the present invention

As shown in Fig. 1-3 is common, the invention provides a kind of automobile absorber, including the buffering for connecting vehicle transit disk 1 Device, buffer includes buffer housing 4, and buffer housing 4 has in plunger shaft 401, plunger shaft 401 to be slidably fitted with to buffer lives Plug axle 5, damper piston axle 5 is connected with vehicle transit disk 1, and damping cylinder 6 is provided with plunger shaft 401, and damping cylinder 6 is set in buffering The outside of piston 501 of piston shaft 5, is provided with back-moving spring 7 in damping cylinder 6, back-moving spring 7 is located in the rodless cavity of plunger shaft 401 And rely on the piston 501 of damper piston axle 5, damper piston axle 5 has near one end of back-moving spring 7 and stretches into buffer case Guide part in body 4, buffer housing 4 is provided with lubricating oil oil inlet passage 402, and lubricating oil oil-feed is located in buffer housing 4 The side of passage 402 is provided with an oil storage tank 404, the one end of lubricating oil oil inlet passage 402 connection oil storage tank 404, other end connection buffering The lubricating oil oil-in 405 of the afterbody of device housing 4, damping cylinder 6 is located between oil storage tank 404 and plunger shaft 401, is set on damping cylinder 6 There are some through holes 601, through hole 601 connection plunger shaft 401 and oil storage tank 404, through hole 601 are buffered along the axial direction arrangement of damping cylinder 6 On device housing 4 lubricating oil oil discharge passage 403, the one end of lubricating oil oil discharge passage 403 are provided with away from the side of lubricating oil oil inlet passage 402 The one end of plunger shaft 401 away from piston 501 is connected, the other end connects the lubricating oil oil-out 406 of the afterbody of buffer housing 4, is Guarantee plunger shaft 401 is connected always with oil storage tank 404, it is to avoid lacks lubricating oil in plunger shaft 401, in damping cylinder 6 near multiple The end of position spring 7 offers at least one breach 602 and (may be such that plunger shaft 401 is connected with oil storage tank 404, it is to avoid piston Lack lubricating oil in chamber 401)；The resistance of the both sides of piston 501 of damper piston axle 5 is communicated with the piston 501 of damper piston axle 5 Buddhist nun's passage 502, lubricating oil pipeline connects lubricating oil oil-in 405 and lubricating oil oil-out 406 respectively, by damping system and lubrication System is connected, and hydraulic damping damper cylinder is compensated using lubricating oil, and unnecessary lubricating oil drains into profit by lubricating oil outlet Sliding point, eliminates the choke valve in conventional damping systems, restores the parts such as shell fragment, simplifies structure.

The buffer housing 4 has an external part 9 extended to vehicle transit disk 1, and damper piston axle 5 is through stretching out End 9, the second fixing end 802 is fixedly installed on external part 9 (be installed on the outer wall of the external part).

Lubrication channel 904 is provided with the external part 9, the one end of lubrication channel 904 connects lubricating oil oil discharge passage 403, separately One end connects damper piston axle 5.

By structure design so, when may be such that damper piston axle 5 is carried out damping buffering by impact, lubricating oil can be arranged To lubrication channel 904, the surface to damper piston axle 5 is lubricated, and unnecessary lubricating oil is then by the row of lubricating oil oil discharge passage 403 To other oil sites, lubricating oil is not only saved, and by impulsive force, save lubricating power, it is not necessary to frequently enable lubrication Oil pump is to be capable of achieving lubrication, is had very important significance.

Wherein, in processing and fabricating, buffer housing 4 is divided into two halfbodies, two at the position with plunger shaft 401 Halfbody is split up and down along the axis of plunger shaft 401, after machining, by the installation of damper piston axle 5, then two halfbodies is closed Together, so as to obtain the buffer housing 4.

Wherein, sectional area of the damp channel 502 near the one end of back-moving spring 7 is less than away from the one end of back-moving spring 7 Sectional area, away from back-moving spring 7 damp channel 502 in be provided with steel ball 503.

By structure design so, may be such that the steel ball plays a part of check valve, when damper piston axle 5 is rushed When hitting power retraction, steel ball 503 is removed, and damp channel 502 is opened, and the lubricating oil in rodless cavity is entered by damp channel 502 to be had Rod cavity, and compression reseting spring 7, so as to also play damping shock absorption effect.

Wherein, the circulation area on the damping cylinder 6 near the through hole 601 of the one end of back-moving spring 7 is more than away from reset bullet The circulation area of the through hole 601 of the one end of spring 7.

By structure design so, so that when damper piston axle 5 is stretched by external impacts, in steel ball 503 Under the effect of damming, damp channel is closed, and lubricating oil can not be flowed from rod chamber to rodless cavity, and can only be entered by rodless cavity has bar Chamber, but throttling action is produced due to the change of the sectional area of through hole 601, lubricating oil entering into oil storage tank 404 by plunger shaft 401 Oil mass is gradually decreased, so as to serve good damping shock absorption effect.

Wherein, dust cover 8 is provided between the vehicle transit disk 1 and buffer housing 4, damper piston axle 5 stretches out buffering Dust cover 8 is run through in the part of device housing 4, and dust cover 8 can stop that dust is attached on damper piston axle 5, advantageously protect The potted component of oil sealing, rubber ring etc. in buffer, extends the service life of damper of the present invention, and serves elastic shock attenuation Effect.

Wherein, the dust cover 8 that the dust cover 8 can be made for macromolecular material (for example can be with each of favorable elasticity Synthetic rubber, such as any one in nitrile rubber, EP rubbers, butadiene-styrene rubber, neoprene, butyl rubber are planted, or Improved dust cover of the invention preferably described above, is no longer described in detail herein).

For the structure of the dust cover 8, the present inventor has proceeded to improve, i.e., preferably the dust cover 8 has such as Lower structure：Dust cover 8 has the first fixing end 801 of connection vehicle transit disk 1 and the second fixing end of connection buffer housing 4 802。

More specifically, the vehicle transit disk 1 is provided with top rubber cushion 2, and the first fixing end 801 is fixedly connected on top rubber cushion On 2, and damper piston axle 5 is in contact with the first fixing end 801, and the first fixing end 801 is solid construction, only in damper piston axle 5 positions open up the through hole being adapted with damper piston axle 5.By structure design so, can be formed and be slidingly sealed structure, Serve good fixation and elastic buffer effect.

It is located in the dust cover and compaction cavum 803 is provided between the first fixing end 801 and the second fixing end 802, is buffered Piston shaft 5 runs through the compaction cavum 803, and the cavity wall of compaction cavum 803 is accordion.

By structure design so, the dust cover 8 namely the compaction cavum 803 can realize elastic telescopic, from And realize the elastic shock attenuation effect of dust cover.

The end of the external part 9 is fixed with a dust cap 901, external part 9 and is provided with oil sealing 902 and guide pad 903, oil Envelope 902 is leant with dust cap 901, and guide pad 903 is fixed on the inwall of external part 9, and damper piston axle 5 runs through guide pad 903rd, oil sealing 902 and dust cap 901.

By structure design so, especially the use of guide pad 903 (can be rigid structural member) can be to damper piston Axle 5 serves good guide effect, it is to avoid eccentric when damper piston axle 5 stretches out or retracts and cause potted component stress It is uneven, effectively extend the service life of damper of the present invention.

Compression spring 11 is provided between the vehicle transit disk 1 and buffer housing 4.

It is highly preferred that the specific mounting means of the compression spring 11 is as follows, first is installed with vehicle transit disk 1 Spring base 3, the first spring base 3 is installed on the rubber cushion 2 of top, and second spring seat 10, the second bullet are installed with buffer housing 4 Spring abutment 10 is set in external part 9, and compression spring 11 is clamped between the first spring base 3 and second spring seat 10.

By structure design so, the secondary buffer of compression spring 11 serves cushioning effect, so as to reduce buffering The oil pressure of lubricating oil during device damping, reduces the pressure oscillation of oil lubrication system.

The concrete operating principle and process of the automobile absorber of the invention are as follows：

Before work, lubricating oil is added in oil storage tank 404 from lubricating oil oil inlet passage 402, lubricating oil then enters lubrication Passage 904, realizes the lubrication of buffer piston shaft 5, and unnecessary lubricating oil then enters lubrication by lubricating oil oil discharge passage 403 Point, because oil storage tank 404 is connected with plunger shaft 401, lubricating oil is also filled with plunger shaft 401.When damper piston axle 5 receives external force During tensile impact, under the effect of damming of steel ball 503, damp channel 502 is closed, and lubricating oil can not be from rod chamber to rodless cavity stream Dynamic, lubricating oil can only enter rod chamber by rodless cavity, and produce throttling action by the change of the sectional area of through hole 601, lubricating oil Gradually decreased into the oil inlet quantity of oil storage tank 404 by plunger shaft 401, so as to serve good damping shock absorption effect；Buffering is lived When plug axle 5 is bounced back by impulsive force, the lubricating oil in rodless cavity enters rod chamber by damp channel 502, as piston 501 is shifted to Compression spring 11, the circulation area of through hole 601 is increasing, and the lubricating oil in oil storage tank 404 more and more enters rod chamber, Compression reseting spring 7, dust cover 8 and compression spring 11, act on so as to also play damping shock absorption simultaneously.Though piston 501 to Which direction motion, unnecessary lubricating oil then drains into other oil sites, not only saves lubrication by lubricating oil oil discharge passage 403 Oil, and by impulsive force, save lubricating power, it is not necessary to frequently enable grease pump and be capable of achieving lubrication, when impact masterpiece After with elimination, in the presence of back-moving spring 7, damper piston axle 5 restores balance position.

It should be appreciated that the purposes of these embodiments is merely to illustrate the present invention and is not intended to limit protection model of the invention Enclose.Additionally, it will also be appreciated that after technology contents of the invention have been read, those skilled in the art can make each to the present invention Plant and change, change and/or modification, all these equivalent form of value equally falls within the guarantor that the application appended claims are limited Within the scope of shield.

Claims

1. a kind of automobile absorber, the automobile absorber includes the buffer of connection vehicle transit disk, and the buffer includes Buffer housing, the buffer housing has plunger shaft, and damper piston axle, the buffering are slidably fitted with the plunger shaft Piston shaft is connected with the vehicle transit disk, and damping cylinder is provided with the plunger shaft, and the damping jacket casing is loaded on the buffering The piston outside of piston shaft, back-moving spring is provided with the damping cylinder, and the back-moving spring is located at the rodless cavity of the plunger shaft On the piston that is interior and relying on the damper piston axle, the damper piston axle has near one end of the back-moving spring The guide part in the buffer case body is stretched into, the buffer housing is provided with lubricating oil oil inlet passage, the buffer case An oil storage tank is provided with positioned at the lubricating oil oil inlet passage side on body, described lubricating oil oil inlet passage one end connects the oil storage Groove, the other end connects the lubricating oil oil-in of the buffer housing afterbody, and the damping cylinder is located at the oil storage tank and piston Between chamber, the damping cylinder is provided with some through holes, and the through hole connects the plunger shaft and the oil storage tank, the through hole edge The axial direction arrangement of the damping cylinder, away from the lubricating oil oil inlet passage side is provided with lubricating oil fuel-displaced in the buffer housing Passage, described lubricating oil oil discharge passage one end connects the one end of the plunger shaft away from the piston, and other end connection is described slow Rush the lubricating oil oil-out of device housing afterbody；The damping cylinder offers at least one and lacks near the end of the back-moving spring Mouthful；The damp channel of the piston both sides of the damper piston axle is communicated with the piston of the damper piston axle；Lubricating oil pipe Road connects the lubricating oil oil-in and the lubricating oil oil-out respectively；

The buffer housing has an external part extended to the vehicle transit disk, and the damper piston axle is through described External part, second fixing end is fixedly installed on the external part；

Lubrication channel is provided with the external part, described lubrication channel one end connects the lubricating oil oil discharge passage, and the other end connects Connect the damper piston axle.

2. automobile absorber as claimed in claim 1, it is characterised in that：The damp channel is near described back-moving spring one end Sectional area less than the sectional area away from described back-moving spring one end, away from being provided with the damp channel of the back-moving spring Steel ball.

3. automobile absorber as claimed in claim 1 or 2, it is characterised in that：Near the back-moving spring on the damping cylinder Circulation area of the circulation area of the through hole of one end more than the through hole away from described back-moving spring one end.

4. the automobile absorber as described in claim any one of 1-3, it is characterised in that：The vehicle transit disk and the buffering Dust cover is provided between device housing, the dust cover is run through in the part that the damper piston shaft extension goes out the buffer housing.

5. automobile absorber as claimed in claim 4, it is characterised in that：The dust cover has the connection vehicle transit disk The first fixing end and the connection buffer housing the second fixing end.

6. the automobile absorber as described in claim any one of 1-5, it is characterised in that：The vehicle transit disk is provided with top glue Pad, first fixing end is fixedly connected on the top rubber cushion, and the damper piston axle connects with first fixing end Touch, first fixing end is solid construction, opens up what is be adapted with the damper piston axle in the damper piston shaft position Through hole, formation is slidingly sealed structure.

7. the automobile absorber as described in claim any one of 1-6, it is characterised in that：Described first is located in the dust cover Compaction cavum is provided between fixing end and second fixing end, the damper piston axle runs through the compaction cavum, the pressure The cavity wall of contracting cavity is accordion.

8. the automobile absorber as described in claim any one of 4-7, it is characterised in that：The vehicle transit disk and buffer case Compression spring is provided between body.

9. the automobile absorber as described in claim any one of 1-8, it is characterised in that：Fixedly mounted on the vehicle transit disk There is the first spring base, first spring base is installed on the top rubber cushion, and second is installed with the buffer housing Spring base, the compression spring is clamped between first spring base and second spring seat.

10. automobile absorber as claimed in claim 9, it is characterised in that：The end of the external part is fixed with a dust cap, Oil sealing and guide pad are provided with the external part, the oil sealing leans with the dust cap, the guide pad is fixed on described On the inwall of external part, the damper piston axle runs through the guide pad, the oil sealing and the dust cap.