CN2775391Y

CN2775391Y - Double piston double oil seal multiple gear automatic control inflating type automobile shock reducer

Info

Publication number: CN2775391Y
Application number: CN 200520089516
Authority: CN
Inventors: 付德海
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-01
Filing date: 2005-03-01
Publication date: 2006-04-26
Anticipated expiration: 2015-03-01

Abstract

The utility model relates to a double piston double oil seal multiple gear automatic control inflating type automobile shock reducer, which comprises an external cylinder, an internal cylinder, a guide body, a piston rod, and a valve seat, wherein the utility model is provided with an upper piston and a lower piston on the lower end of the piston rod; an upper and a lower surfaces of the upper piston, the lower piston, and the valve seat are provided with circular ring-shaped internal oil grooves and external oil grooves; the internal parts of the upper piston, the lower piston, and the valve seat are provided with internal oil holes and external oil holes; the surfaces on the upper piston, the lower piston, and the valve seat are laminated with oil guide plates, gaskets, and work valve sheets; the lower surface of the upper piston is laminated with control valve sheets; the lower surfaces of the lower piston and the valve seat are laminated with two to three groups of control valve sheets; the internal parts of the internal cylinder and the external cylinder are filled with medium oil; high-pressure gas is filled on the external cylinder, and the internal part of an upper port which is arranged on the external cylinder on the piston rod is provided with an internal oil seal, a distance sleeve, an external oil seal and an end plug and a dustproof ring which are fastened by screw caps. The utility model has the advantages that automatic control of multiple gears can be realized; shock reducing amplitude can be duly and accurately adjusted; ideal shock reducing effects can be realized; sealing performance is good; sensitivity is high; work is reliable, and service life is long.

Description

The double-piston dual-oil seal is controlled Produce for Gas Car Damper for many grades automatically

Technical field

The utility model belongs to a kind of Produce for Gas Car Damper, and particularly a kind of double-piston dual-oil seal is controlled Produce for Gas Car Damper for many grades automatically.

Background technique

Existing vehicle shock absorber is to be made of the medium oil in inner casing, the valve seat that is located at inner casing lower end mouth place, valve block and spring, outer shell, piston rod and piston, filling inner casing and the outer shell and guide way, seal ring.Its existence problem be: 1, when assembling, in order in outer shell, to fill with oil, want earlier piston to be pressed onto the cylinder body inner bottom surface, be full of the oil back oil sealing is installed, when inner casing top is arrived in piston motion, because piston rod movement outside cylinder body, makes cylinder interior produce certain vacuum, at this moment the active force that acts on the piston of fluid is just desirable not to the utmost, thereby influences effectiveness in vibration suppression; 2, only be provided with a piston on piston rod, can not adjust amplitude according to the active force difference that the road surface fluctuating produces, easily produce the idle stroke phenomenon, effectiveness in vibration suppression is undesirable; 3, in addition, owing to be provided with spring and change logical oil mass by spring on valve block, working sensitivity is poor; 4, owing to adopt single oil sealing to seal, sealing effect is poor, easy oil leakage, and sealability is subject to temperatures involved, and working life is short.

Summary of the invention

The purpose of this utility model is to solve the problems referred to above that prior art exists, a kind of many grades of controls automatically that realize are provided, can regulate the vibration damping amplitude timely and accurately, the effectiveness in vibration suppression of realizing ideal, good airproof performance, highly sensitive, the double-piston dual-oil seal of reliable operation, long service life is controlled Produce for Gas Car Damper for many grades automatically.

The utility model is achieved in that it has an outer shell, in outer shell, be placed with inner casing, the place is equipped with guide way and guide sleeve in the inner casing upper end-hole, in inner casing, be placed with piston rod, lower end mouth at inner casing is provided with valve seat, its special way is at piston-rod lower end upper piston and lower piston to be installed, be provided with spacer between upper piston and the lower piston, at upper piston, the upper surface of lower piston and valve seat and lower surface are respectively equipped with circular inner oil sump and outer oil sump, outer edge and place, valve seat lower edge at the outer oil sump that is positioned at the lower piston upper surface are provided with normal open and clear mouthful respectively, at upper piston, corresponding inner oil sump and outer oil sump place are provided with equally distributed interior oilhole and outer oilhole respectively in lower piston and the valve seat, at upper piston, lower piston and valve seat upper surface by on cause down respectively successively that closed assembly has oil guide plate, packing ring and work valve block, corresponding interior oil-hole location has oil duct junction respectively on said oil guide plate and the work valve block, at upper piston lower surface closed assembly control valve block and fastening by spacer is arranged, lower piston and valve seat lower surface respectively closed assembly two to three groups of control valve blocks and fastening by tightening nut are arranged, be provided with packing ring between the control valve block of adjacent group, control valve block on the said upper piston, control valve block on lower piston and the valve seat piston that is incumbent on respectively, on the inner oil sump of lower piston and valve seat lower surface, in inner casing He in the outer shell, be filled with medium oil, be filled with pressurized gas on outer shell top, on piston rod, be positioned at the outer shell upper end-hole and be provided with inner oil seal from the bottom to top successively, spacer, outer oil seal, plug and dust ring are also fastening by nut.

Automatically control Produce for Gas Car Damper for many grades according to above-mentioned double-piston dual-oil seal, on plug, be provided with the anti-overflow hole.

Automatically control Produce for Gas Car Damper for many grades according to above-mentioned double-piston dual-oil seal, be provided with spring pressuring ring, to improve the oil sealing effect and to play compensating action at inner oil seal and outer oil seal fairlead outer wall lower end.

Automatically control Produce for Gas Car Damper for many grades according to above-mentioned double-piston dual-oil seal, the outer oilhole on said upper piston, lower piston and the valve seat is an arcuation, to increase pressure, makes the valve block action sensitiveer.

The utility model has the advantages that: by injecting pressurized gas, make the medium oil in the vibration damper become high pressure oil, no matter piston motion is to any position, can both make its bottom in time be full of oil, thereby guarantee that this vehicle shock absorber has sufficient effectiveness in vibration suppression, no longer include the idle stroke phenomenon and occur, this gas also plays the effect of decompression and voltage stabilizing to vibration damper inside, prevents vehicle damage sealing configuration and the situation of leakage of oil occurs during prominent road conditions of meeting very severe under the situation of heavy duty; Even the oil of the medium in addition in vibration damper oxidation, rotten also can not influence the performance of product; Owing to be provided with two-way inside and outside oil groove at valve seat and the upper and lower surface of piston, can increase the pressure that acts on the valve block, make the valve block action sensitiveer, by actual road conditions effect active force onboard, make oil pressure produce different active forces and act on the valve block, make valve block open corresponding angle, give birth to corresponding damping by corresponding oil miscarriage, under any road conditions, can both make vehicle have the better damping effect; Adopt double-piston and work valve block and control valve chip architecture, can realize many grades of controls automatically, and it is reliable to be active in one's movements, and can regulate effectiveness in vibration suppression timely and accurately, make it and actual road conditions coupling, give a kind of comfortable mild sensation of driver and passenger; By changing the kind and the quantity of valve block, can be suitable for different vehicles; Oil sealing no longer includes welding process after installing, make it not be subjected to temperatures involved, thereby give full play to its premium properties, owing to adopt inside and outside oil seal structure, can improve sealing effect, and play compensating action, under bad working environment, Sealing also can have a superior working environment, has greatly prolonged the working life of vibration damper.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a valve seat construction schematic representation in the utility model;

Fig. 3 is that the A of Fig. 2 is to view;

Fig. 4 is a upper piston structural representation in the utility model;

Fig. 5 is that the B of Fig. 4 is to view;

Fig. 6 is a lower piston structural representation in the utility model;

Fig. 7 is that the C of Fig. 6 is to view;

Fig. 8 is mounted in the oil guide plate structural representation on the lower piston;

Fig. 9 is mounted in the operating valve chip architecture schematic representation on the lower piston.

Among the figure: 1-outer shell, 2-inner casing, 3-valve seat, 301-inner oil sump, 302-outer oil sump, oilhole in the 303-, the outer oilhole of 304-, normal open and clear mouthful of 305-, 4-lower piston, the 401-inner oil sump, oilhole in the 402-outer oil sump, 403-, the outer oilhole of 404-, normal open and clear mouthful of 405-, 5-upper piston, 501-inner oil sump, 502-outer oil sump, oilhole in the 503-, the outer oilhole of 504-, 6-medium oil, 7-gas, the 8-connecting plate, 9-pallet, 10-inner oil seal, 11-guide way, the 12-nut, 13-dust ring, 14-oil sealing projection, 15-oil guide plate, 16-packing ring, the 17-valve block of working, 18-controls valve block, 19-oil guide plate, 20-packing ring, the 21-valve block of working, 22-controls valve block, 23-packing ring, the 24-spring pressuring ring, 25-plug, 26-anti-overflow hole, 27-outer oil seal, the 28-spacer, the 29-oil guide plate, the 30-piston rod, 31-controls valve block, 32-spacer, the 33-valve block of working, 34-packing ring, 35-packing ring.

Embodiment

As shown in the figure, the utility model has an outer shell 1, outer side wall bottom at outer shell 1 is provided with connecting plate 8, outer side wall top at outer shell 1 is provided with pallet 9, place inner casing 2 in the said outer shell 1, lower end mouth at inner casing 2 is provided with valve seat 3, valve seat 3 and inner casing 2 interference fit, be outer oil cavity between said outer shell 1 and the inner casing 2, in the inner casing 2 is interior oil pocket, on piston rod 30, be positioned at outer shell 1 upper end-hole and be provided with inner oil seal 10, spacer 28, outer oil seal 27, plug 25 and dust ring 13 from the bottom to top successively, and fastening by nut 12, on plug 25, be provided with anti-overflow hole 26.Be provided with three-five dentation oil sealing projectioies 14 at inner oil seal 10 and outer oil seal 27 inwalls, oil sealing projection 14 is three in the present embodiment.By interference fit guide way 11 is installed in inner casing 2 upper end-hole, guide way 11 is provided with oil duct, is provided with guide sleeve at guide way 11 middle parts, by inner oil seal 10 and guide way 11 inner casing 2 is fixed in the outer shell 1.In inner casing 2, be placed with piston rod 30, said piston rod 30 is upwards drawn through guide sleeve and inner oil seal 10, outer oil seal 27, be provided with spring pressuring ring 24 at inner oil seal 10 and outer oil seal 27 fairlead outer wall lower ends, in order to strengthen the surface of contact of inner oil seal 10 and outer oil seal 27 and piston rod 30, improve the oil sealing effect and play compensating action.Upper piston 5 and lower piston 4 are installed in the lower end of piston rod 30, corresponding upper piston 5 places, the bottom of piston rod 30 are provided with step, be provided with spacer 32 between upper piston 5 and the lower piston 4, be respectively equipped with circular inner oil sump 501 and outer oil sump 502 at upper piston 5 upper surfaces and lower surface, be respectively equipped with circular inner oil sump 401 and outer oil sump 402 at lower piston 4 upper surfaces and lower surface, upper surface and lower surface at valve seat 3 are respectively equipped with circular inner oil sump 301 and outer oil sump 302, in upper piston 5 corresponding inner oil sump 501 and outer oil sump 502 places be provided with respectively several equally distributed in oilhole 503 and outside oilhole 504, in lower piston 4 corresponding inner oil sump 401 and outer oil sump 402 places be provided with respectively several equally distributed in oilhole 403 and outside oilhole 404, in valve seat 3 corresponding inner oil sump 301 and outer oil sump 302 places be provided with respectively several equally distributed in oilhole 303 and outside oilhole 304, outer oilhole 504,404 and 304 is arcuation, at upper piston 5, lower piston 4 and valve seat 3 upper surfaces by on cause down successively that closed assembly has oil guide plate 29, packing ring 34 and work valve block 33, oil guide plate 15, packing ring 16 and work valve block 17 and oil guide plate 19, packing ring 20 and work valve block 21, said

oil guide plate

29,15 and 19 are provided with oil duct junction, oilhole 503 positions in the correspondence on work valve block 33, on the work valve block 17 corresponding in oilhole 403 positions and work valve block 21 corresponding in oilhole 303 positions oil duct junction is arranged respectively, at upper piston 5 lower surface closed assemblies one group of control valve block 31 is arranged, at lower piston 4 and valve seat 3 lower surface closed assemblies two to three groups of

control valve blocks

18 and 22 and fastening by tightening nut are arranged, every group of control valve block has two to five valve blocks to constitute, be provided with packing ring 35 between the control valve block 18 of adjacent group, be provided with packing ring 23 between the control valve block 22 of adjacent group, control valve block 31 on the said upper piston 5, control valve block 18 on lower piston 4 and the

valve seat

3,22 pistons 5 that are incumbent on respectively, the inner oil sump 501 of lower piston 4 and valve seat 3 lower surfaces, on 401 and 301, to play the effect of one-way valve.Be provided with normal open and clear mouthful 405 at the outer edge place of the outer oil sump 42 of the upper surface that is positioned at lower piston 4, be provided with mounting hole at valve seat 3 middle parts, clamping bolt and nut are installed in mounting hole, oil guide plate 19, packing ring 20, work valve block 21, control valve block 22 and packing ring 23 are installed on the valve seat 3 by the fastening screw screw bolt and nut that passes mounting hole on the valve seat 3, be provided with normal open and clear mouthful 305 in the lower edge of valve seat 3, oil pocket and outer oil cavity in being used to be communicated with.

During use, on the pallet 9 of this Produce for Gas Car Damper, shock-absorbing spring is installed, and this vehicle shock absorber is installed on the automobile car beam by connecting plate 8.Piston rod 30 is at stationary apparatus, and the work valve block 33 of upper piston 5 and control valve block 31 are in closed condition, and upper piston 5 and lower piston 4 remain static.When vehicle driving ran into Uneven road, the control valve block 31 of upper piston 5 was opened, and upper piston 5 and lower piston 4 move upward, and play damping function; When making active force big because of the road surface big rise and fall, the control valve block 18 on the lower piston 4 is opened, and according to amount of force, control valve block 18 is opened different amount and opened two groups or three groups, realizes control automatically, plays the damping effect of coupling.

Claims

1, a kind of double-piston dual-oil seal is controlled inflatable vibration damper for many grades automatically, comprise outer shell (1), in outer shell (1), be placed with inner casing (2), the upper end-hole place is equipped with guide way (11) and guide sleeve at inner casing (2), in inner casing (2), be placed with piston rod (30), lower end mouth at inner casing (2) is provided with valve seat (3), its special way is in piston rod (30) lower end upper piston (5) and lower piston (4) to be installed, be provided with spacer (32) between upper piston (5) and the lower piston (4), in upper piston (5), the upper surface of lower piston (4) and valve seat (3) and lower surface are respectively equipped with circular inner oil sump (501,401,301) and outer oil sump (502,402 and 302), outer edge and place, valve seat (3) lower edge at the outer oil sump (402) that is positioned at lower piston (4) upper surface are provided with several normal open and clear mouthful (405 and 305) respectively, in upper piston (5), corresponding inner oil sump (501 in lower piston (4) and the valve seat (3), 401 and 301) and outer oil sump (502,402 and 302) locate to be provided with respectively several equally distributed interior oilholes (503,403 and 303) and outer oilhole (504,404 and 304), in upper piston (5), lower piston (4) and valve seat (3) upper surface by on cause down successively that closed assembly has oil guide plate (29), packing ring (34) and work valve block (33), oil guide plate (15), packing ring (16) and work valve block (17) and oil guide plate (19), packing ring (20) and work valve block (21), said oil guide plate (29,15 and 19) be provided with oil duct junction, oilhole (503) position in work valve block (33) is gone up correspondence, corresponding interior oilhole (303) position of oilhole (403) position and work valve block (21) had oil duct junction respectively in work valve block (17) was upward corresponding, at upper piston (5) lower surface closed assembly control valve block (31) and fastening by spacer (32) is arranged, lower piston (4) and valve seat (3) lower surface respectively closed assembly two to three groups of control valve blocks (18 are arranged, 22) also fastening by tightening nut, be provided with packing ring (35) between the control valve block (18) of adjacent group, be provided with packing ring (23) between the control valve block (22) of adjacent group, control valve block (31) on the said upper piston (5), control valve block (18 on lower piston (4) and the valve seat (3), 22) piston (5) that is incumbent on respectively, the inner oil sump (501 of lower piston (4) and valve seat (3) lower surface, 401 and 301) on, be filled with medium oil (6) in inner casing (2) and in the outer shell (1), be filled with pressurized gas (7) on outer shell (1) top, on piston rod (30), be positioned at outer shell (1) upper end-hole and be provided with inner oil seal (10) from the bottom to top successively, spacer (28), outer oil seal (27), plug (25) and dust ring (13) are also fastening by nut (12).

2, double-piston dual-oil seal according to claim 1 is controlled inflatable vibration damper for many grades automatically, it is characterized in that: be provided with anti-overflow hole (26) on plug (25).

3, double-piston dual-oil seal according to claim 1 is controlled inflatable vibration damper for many grades automatically, it is characterized in that: be provided with spring pressuring ring (24) at inner oil seal (10) and outer oil seal (27) fairlead outer wall lower end.

4, double-piston dual-oil seal according to claim 1 is controlled inflatable vibration damper for many grades automatically, and it is characterized in that: the outer oilhole (504,404 and 304) on said upper piston (5), lower piston (4) and the valve seat (3) is an arcuation.