EP0123365A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Double-acting hydraulic shock absorber with controlled compression cycle for vehicles
Assignee: AlliedSignal Automotive Espana SA
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Filing: 1984-04-25
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Granted: —
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Expires: 2004-04-25
Abstract
Abstract Shock absorber comprising a lower body 19 formed by an upper portion 20 and a lower portion 22. The upper portion 20 houses the coils of a solenoid 25 and by means of its upper part 28 holds an upper dislike body 30 which is fitted to the cylinder 1. The upper disc-like body 30 has holes 34 and 35 passing through it, which connect the lower chamber 17 of the cylinder 1 with annular chamber 2, and cooperate with respective spring-loaded closure elements 36 and 40 to adjust the resistances in the recovery and hard compression modes. Holes 42 through the lower body 19 connect the internal chamber 23 with the annular storage chamber 2 and constitute the ducts for generating the soft resistance. The lower orifices of the holes 42 are disposed within an annular rib 43 which forms a valve seat for a closure plate 44. The upper orifices lead into the chamber 23 between two annular ribs 48 which form the valve seat for a closure plate 49 which is displaceable by the solenoid 25.
Inventors
- 👤 Antonio Giner Blazquez
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 01:01
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/06; B60G17/08; F; F16; F16F; F16F9/00; F16F9/32; F16F9/44; F16F9/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
339 words
Double-acting hydraulic shock absorber with controlled compression cycle, for vehicles, comprising a valve arrangement which includes, between the lower chamber in the cylinder and the annular reservoir, one or more ducts including a valve which affords a hard resistance to compression and which opens towards the annular reservoir; one or more ducts including a valve which affords resistance in the recovery mode and which opens towards the lower chamber of the cylinder, and one or more ducts which include, on the one hand, a valve which affords a soft resistance to compression, and, on the other hand, a flow vclve whose closure element is actuable by a solenoid which can be energised from the electrical system of the vehicle to put the valve which affords a soft resistance to compression into operation, characterised in that the valve arrangement which ccrmunicates the lower chamber of the cylinder with the annular reservoir comprises.an upper body portion which is fixed to the lower end of the cylinder, forming the bottom thereof, and a lower body portion which is fixed to the upper body portion in such a way as to form therewith an annular chamber communicating with the annular reservoir and an internal chamber communicating with the lower chamber of the cylinder, the upper body portion having passing therethrough ducts which communicate the lower chamber of the cylinder with the annular chamber and are associated with respective closure elements that are resiliently loaded to afford the resistances in the recovery mode and in the hard compression mode, wherein the wall of the internal chamber of the lower body portion which is more remote from the upper body portion has passing therethrough ducts which communicate same with the annular reservoir and with which there are associated, externally to the body portion, the closure element which affords a soft resistance to compression, and, internally, with seats for the control valve for the closure member which affords a soft resistance to compression, the solenoid of which is formed in the opposite wall of said chamber.
Claim 2
Dependent Claim
85 words
Double-acting shock absorber with controlled compression cycle, for vehicles, according to claim 1, characterised in that the upper body portion has a central opening which is fitted on to a coaxial neck portion of the lower body portion and through which longitudinally passes an axial conduit which communicates the lower chamber of the cylinder with the internal chamber of said body portion, and the annular chamber is defined by stop portions projecting from the mutually oppositely disposed walls of said upper and/or lower body portions.
Claim 3
Dependent Claim
80 words
Double-acting shock absorber with controlled compression cycle, for vehicles, according to claims 1 and 2, characterised in that the recovery ducts are formed on a circumference which is adjacent to the periphery of the upper body portion and the closure element thereof is a laminar disc which is urged against the openings of said ducts by a conical spring which is supported by an abutment fixed to the projecting end of the coaxial neck portion of the lower lody portion.
Claim 4
Dependent Claim
112 words
Double-acting shock absorber with controlled compression cycle, for vehicles, according to claims 1 and 2, characterised in that the ducts which afford a high resistance to compression are distributed over a circumference which h. adjacent to the central aperture of the upper body portion and the closure element thereof is a disc of resilient metal which is fitted on to the coaxial neck portion of the lower body - portion and which is urged by means of its edge against an annular seat which is disposed around said ducts, by means of a conical resilient disc which is trapped between the lower body portion and the central part of the closure disc.
Claim 5
Dependent Claim
94 words
Double-acting shock absorber with controlled compression cycle, for vehicles, according to claims 1 and 2, characterised in that the lower body portion comprises an upper ferromagnetic member, from the upper part of which projects the coaxial neck portion and the lower surface of which has an annular groove which defines a housing for the coil of the solenoid and the edges of which form the pole pieces thereof, and a fitting seat for a non-magnetic bowl-shaped member which defines the internal chamber of said body portion and the lower wall portion of siad chamber.
Claim 6
Dependent Claim
80 words
Double-acting shock absorber with controlled compression cycle, for vehicles, according to claims 1, 2 and 5, characterised in that the ducts which afford a low resistance to compression are formed on a concentric circumference of the non-magnetic member and the low-resistance closure element is formed by a resilient disc which is fixed centrally by riveting or clinching, in such a way that the edge thereof bears with the desired preloading against an annular seat which is disposed around the ducts.
Claim 7
Dependent Claim
67 words
Double-acting shock absorber with controlled compression cycle, for vehicles, according to claims 1, 2, 5 and 6, characterised in that the internal wall of the non-magnetic member comprises two annular ribs disposed on both sides of the circumferential array of low-resistance ducts forming a valve seat for a ferromagnetic closure disc which completes the magnetic circuit of the solenoid and is urged resiliently against said seating ribs.
References Cited (Backward Citations)
No citation records indexed.
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