CN2374380Y

CN2374380Y - Automotive multifunctional control dampener

Info

Publication number: CN2374380Y
Application number: CN 99226764
Authority: CN
Inventors: 胡建新
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-28
Filing date: 1999-05-28
Publication date: 2000-04-19
Anticipated expiration: 2009-05-28

Abstract

The utility model relates to a shock absorption device for automobiles, which comprises a cylindrical operating oil cylinder, an outer oil cylinder which is in the same axial line with the operating oil cylinder, and a piston rod which is provided with a piston and positioned in the operating oil cylinder, wherein, a gap for storing oil is reserved in the position between the operating oil cylinder and the outer oil cylinder. The utility model is characterized in that a lost motion preventing device which can prevent the piston from running into an oil absorbing seat when the piston moves downwards is connected to the piston rod, wherein, the lost motion preventing device comprises a lost motion preventing cylinder which is provided with an axial circulating groove and is in that same axial line with the piston rod, a one-way valve which is provided with a valve plate, a spring and a valve seat and is installed on the lost motion preventing cylinder, and a circlip. Therefore, the utility model solves the problems of total lost motion, bad effect of shock absorption, shorter service life, oil leakage, etc., of the existing pistons of the automobile shock absorber.

Description

Automobile multifunctional control bumper

The utility model relates to a kind of device that is used for automobile shock.

Existing automobile absorber can be seen from Figure 10, it contain operating cylinder 11, and the operating cylinder coaxial line and with the outer oil cylinder 6 that leaves annular store oil gap 16 between the operating cylinder, be positioned at the piston rod 10 of the band piston 12 of operating cylinder, its China and foreign countries' oil cylinder has top cover 1, bottom (head) 14 and spring perch 7, and the top of operating cylinder has guide holder 3 and seal ring 2, bottom have the oil suction seat 13 that operating cylinder is communicated with annular store oil gap.This bumper is threaded on the auto body by piston rod part, and outer oil cylinder is connected on the propons or back axle of automobile bottom by its spring perch and the spring that adds.When running car during at rugged roadbed, bumper is compressed or stretches, that is piston moves down or up, fluid or enter annular store oil gap or flow back to operating cylinder from annular store oil gap from operating cylinder; Be subjected to effect such as piston inner hole, oil suction seat endoporus and casing wall friction in the flow process and produce damping and make automobile shock.The shortcoming of existing automobile absorber is: 1) danger of bump oil suction seat arranged greatly because of shaking force in the piston folding process, that is produce the idle running phenomenon, its damping effect is undesirable and bumper is damaged; The service life of this bumper is lower, has only 7-12 month usually; 2) fluid shock damping action in the flow process in bumper is undesirable, so damping effect not too closes requirement, even amplitude is bigger.

The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, oil tight automobile multifunctional control bumper in a kind of good damping effect, long service life and the use is provided, and makes it have characteristics such as rational in infrastructure, easily manufactured.

Automobile multifunctional control bumper contains a columniform operating cylinder, one and operating cylinder coaxial line and with the columniform outer oil cylinder that leaves the store oil gap between the operating cylinder, a piston rod that is positioned at the band piston of operating cylinder, its China and foreign countries' oil cylinder has top cover, bottom (head) and spring perch, the operating cylinder top has guide holder and seal ring, the bottom has the oil suction seat that operating cylinder is communicated with the store oil gap, characteristics of the present utility model are: connected one on the piston rod and can prevent that the piston that moves down from bumping against the anti-idle running device on the oil suction seat, this device include its inwall have concave shaped the axial flow groove and with the columniform anti-idle running cylinder of piston rod coaxial line, one that is installed on the anti-idle running cylinder has valve block, spring, the check valve of valve seat and jump ring.

Oil suction seat in the utility model bumper can contain one and be fixed on base on the bottom (head), centrosome that is installed in the band damping hole in the centre hole of base, one and be installed in the adjusting valve block of centrosome bottom and outer pad that is installed in the centrosome top and over cap, interior jump ring by suppressing mainspring.

The utility model shake device also can have a cylinder sleeve with the uncovered annulus cylindricality in piston rod coaxial line and bottom between the operating cylinder inwall is with piston rod, the upper end of this cylinder sleeve is fastened on the guide holder.

Seal ring in the utility model bumper can contain can banding on piston rod the center hoop, can contain to live the circular planes of guide holder end face and be fixed on the periphery end of circular planes and the flange on the cylinder wall outside wall energy is clamped on outside it.

When using the utility model bumper, make its piston rod by be threaded on the auto body, spring perch is connected on the propons or back axle of automobile bottom by adding spring.When automobile when rugged roadbed travels, it is up or move down in operating cylinder that piston rod drives piston.Move down as piston rod, Piston Compression the fluid of its underpart operating cylinder, make fluid enter the store oil gap through the oil suction seat, in this process, the check valve auto-closing on the anti-idle running device, thus increased the damping that piston moves down, prevented the bump of piston with the oil suction seat; Up as piston rod, then the fluid in the store oil gap is sucked back to operating cylinder by the oil suction seat, and the check valve on the anti-pocket is opened under pressure automatically, and the fluid in the operating cylinder is stable.

The utility model has the advantages that: 1, the anti-idle running device of bonded assembly on piston rod, the damping that its check valve produces both can effectively prevent the piston idle running on earth, the fluid that can keep operating cylinder again is stable; Be provided with centrosome in the oil suction seat, regulate after the valve block, make the oil suction seat become the controller of energy automatic control fluid circulation, then the fluid of operating cylinder is more stable; The cylinder sleeve that between piston rod is with operating cylinder, is provided with, available buffer also compresses fluid and circulates groove producing damping, and then prevented the idle running phenomenon; Because of the utility model bumper added anti-idle running device, controller and cylinder sleeve on the basis of existing bumper after, its good damping effect, long service life.Usually, do not exceed 8mm at roadbed its amplitude of part that is uneven, can reach 5-7 service life; 2, the flange on the seal ring can increase the leak free effect, so the utility model bumper in use not have oil leakage phenomenon in pressure lower edge radial expansion.

To and contrast accompanying drawing by embodiment below, the utility model will be further described below.Have in the accompanying drawing:

Fig. 1 is the positive view of the utility model automobile multifunctional control bumper;

Fig. 2 is the enlarged drawing of the anti-idle running device 8 among Fig. 1;

Fig. 3 is the enlarged drawing of the oil suction seat 13 among Fig. 1;

Fig. 4 is the enlarged drawing of the base 36 in Fig. 3 oil suction seat;

Fig. 5 is the base upward view among Fig. 4;

Fig. 6 is the node I enlarged drawing among Fig. 1;

Fig. 7 is the birds-eye view of the cylinder sleeve 81 among Fig. 2;

Fig. 8 is over cap 31 enlarged drawings among Fig. 3;

Fig. 9 is the birds-eye view of over cap;

Figure 10 is the positive view of existing automobile absorber.

From Fig. 1, can see the structure of the utility model automobile multifunctional control bumper, it contains the piston rod 10 of columniform operating cylinder 11, columniform outer oil cylinder 6, band piston 12, and operating cylinder is with outer oil cylinder coaxial line and leave store oil gap 16 between the two.Outer oil cylinder has top cover 1, bottom (head) 14 and spring perch 7; The operating cylinder top has guide holder 3 and seal ring 2, bottom have oil suction seat 13; Connected anti-idle running device 8 on the piston rod, and piston rod with have cylinder sleeve 5 between the operating cylinder inwall, piston rod can reduce piston rod worn-down lining 4 with having one between the guide holder.

From Fig. 2, can be clear that anti-idle running device 8 by the ladder boss 17 on the piston rod and jump ring 9 from being axially fixed on the piston rod 10, it contains with the anti-idle running cylinder 81 of piston rod coaxial line and a check valve of being made up of valve block 83, spring 84, valve seat 85; Anti-idle running cylinder 81 adopts partial metallurgy to make, and its structure also can be seen from its birds-eye view 8, have the axial flow groove 82 of concave shaped on its inner peripheral wall.In bumper work, big as the oil pressure of anti-idle running device top, then the check valve of being made up of valve block 83, spring 84, valve seat 85 can be opened automatically, on the contrary check valve SELF CL then.

Oil suction seat 13 also can see from Fig. 3, the adjusting valve block 37 that it contains base 36, be installed in centrosome 34 in the centre hole of base, install in the centrosome bottom and be installed in outer pad 33 above the centrosome and over cap 31, interior jump ring 32.The structure of base also can be seen from Fig. 4 and Fig. 5, regulates valve block 37 and is installed on the neighboring of centrosome bottom, has damping hole 342 in the centrosome.When the excessive then damping hole of the oil pressure of operating cylinder can make fluid from its axial channel, radially the duct flow back into operating cylinder, to play shock damping action, if the oil pressure in store oil gap is excessive, then fluid promotes to regulate valve block 37, centrosome 34 and be with elastomeric outer pad 33 to move up, and at this moment the gap of fluid between base and adjusting valve block bottom flows into operating cylinder.Outer pad is fixed on the base by interior jump ring 32.The structure of over cap 31 can see from Fig. 8 and Fig. 9 that also its roof has three tabs 311, carries out spacing in order to the rise height of external pad.Over cap is fixed on the bottom (head) of outer oil cylinder oil suction seat 13 with the mainspring 35 that suppresses that is provided with between the base, and this resiliently mounted structure also can prevent the vibrations of bumper self effectively.

Cylinder sleeve 5 the operating cylinder inwall with the space between the piston rod in, it be the annulus cylindricality and the bottom uncovered, its upper end inner hole wall be fastened on the guide holder 3, and with the piston rod coaxial line.

Seal ring 2 in the utility model bumper also can be seen from Fig. 6, it contain can banding on piston rod center hoop 23, can contain to live the circular planes 22 of guide holder end face and be fixed on the periphery end of circular planes and the flange 21 of oil cylinder inner wall outside wall energy is clamped on outside it, also can be bumped into steel frame 24 (representing steel frame with blacking respectively among Fig. 1 and Fig. 6) in the circular planes.When fluid rises by the duct on the guide holder 38, the oil pressure effect will make the flange 21 outside cylinder wall expansions of seal ring, so its better tightness, the steel frame 24 in the seal ring has guaranteed the radial dilatation of flange again simultaneously, has guaranteed the totally-enclosed of bumper top.

Automobile multifunctional control bumper can be tightened on piston rod 11 top screw threads on the auto body when installing on automobile, and spring perch is installed on the spring of propons or back axle, so that outer oil cylinder fuses with vehicle wheel frame, and is filled with fluid in the bumper.The Yin Luji injustice causes piston rod movement in the running car, move down as piston rod, Piston Compression the fluid of its underpart, fluid is circled round in the operating cylinder bottom through the damping hole of oil suction seat, and the closed check valve in the anti-idle running device that moves down with piston rod, the adjusting valve block in the oil suction seat also are pressed on the base, thereby have increased the damping of piston motion; On the contrary, when piston rod moves up, because the bottom pressure of oil suction seat, anti-idle running device is big than top, so adjusting valve block, check valve are all opened automatically.In a word, the fluid of operating cylinder is very stable all the time, and it plays shock damping action to the motion of piston, thereby the amplitude of restricting vehicle effectively makes running car steady, cylinder sleeve the buffer action that flowed to fluid is set, it makes fluid more stable.

Claims

1, a kind of automobile multifunctional control bumper, it contains a columniform operating cylinder (11), one and operating cylinder coaxial line and with the columniform outer oil cylinder (6) that leaves store oil gap (16) between the operating cylinder, a piston rod (10) that is positioned at the band piston (12) of operating cylinder, its China and foreign countries' oil cylinder has top cover (1), bottom (head) (14) and spring perch (7), the operating cylinder top has guide holder (3) and seal ring (2), the bottom has the oil suction seat (13) that operating cylinder is communicated with the store oil gap, feature of the present utility model is: connected one on the piston rod and can prevent that the piston that moves down from bumping against the anti-idle running device (8) on the oil suction seat, this device include its inwall have concave shaped axial flow groove (82) and with the columniform anti-idle running cylinder (81) of piston rod coaxial line, one that is installed on the anti-idle running cylinder has valve block (83), spring (84), the check valve of valve seat (85) and jump ring (9).

2, bumper as claimed in claim 1 is characterized in that said oil suction seat (13) contains one and is fixed on base (36) on the bottom (head), one and is installed in the centrosome (34) of the band damping hole (342) in the centre hole of base, adjusting valve block (37) that is installed in the centrosome bottom and one and is installed in outer pad (33) above the centrosome and over cap (31), interior jump ring (32) by suppressing mainspring (35).

3, bumper as claimed in claim 1, it is characterized in that said operating cylinder inwall with between the piston rod with a cylinder sleeve (5) with the uncovered annulus cylindricality in piston rod coaxial line and bottom, the upper end of this cylinder sleeve is fastened on the guide holder.

4, as claim 1 and 2 and 3 described bumpers, it is characterized in that said seal ring (2) contain can banding on piston rod center hoop (23), can contain to live the circular planes (22) of guide holder end face and be fixed on the periphery end of circular planes and the flange (21) on the cylinder wall outside wall energy is clamped on outside it.