US1866671A - Shock absorber device - Google Patents

Shock absorber device Download PDF

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Publication number
US1866671A
US1866671A US201183A US20118327A US1866671A US 1866671 A US1866671 A US 1866671A US 201183 A US201183 A US 201183A US 20118327 A US20118327 A US 20118327A US 1866671 A US1866671 A US 1866671A
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US
United States
Prior art keywords
piston
chamber
valve
compression
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US201183A
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English (en)
Inventor
Royce Frederick Henry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Application granted granted Critical
Publication of US1866671A publication Critical patent/US1866671A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/22—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger
    • F16F9/26—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger with two cylinders in line and with the two pistons or plungers connected together

Definitions

  • AThis invention relates to shock absorbers and more particularly to hydraulic shock absorbers, in which a piston divides a cylinder into two compression chambers, with spring controlled ley-passes for the contained liquid.
  • the chief object of the invention isto provide means by which small movements of the springs of a vehicle are resisted only slighty, while during flexing of greater amplitude the resistance builds up rapidly, reaching a maximum value, then continues constant through any further flexing of the springs.
  • Another object is to provide for this ac'- tionV in both directions of movement, but with greater resistance to movement in one direction than in the other.
  • Another object is to provide a mechanism which will operate in these t'wo desirable ways, almost independently of changes of viscosity of the contained liquid, due to changes of season and temperature.
  • Fig. 3 shows in section the end (Z4 ofthe Ypiston with its by-pass slots e6, the piston valve e1 being seen in end view in the direction of arrow 3 in Fig. 2;
  • Fig. 4 is a vertical transversesection on line 4--4 of Fig. 1. Y
  • the body casting a comprises the cylinder a0; the chamber a1 above the cylinder; the rocker arm housing a2 in Vcommunication with chamber a1; the laterally extending boss a3, Fig. 4 providing a bearing for the rocker shaft b; the reservoir a4, Fig. 4, in communication with chamber a1 and extending down one side of the casting to communicate with passage a9, Fig. 1, by means of holes a14 and L15 in the hollow plug a7, Figs. 1 and 4.
  • the cap a5 secured to the end of the structureand cap a6 secured over the rocker arm housing form a closedsystem to be filled with ⁇ a liquid, preferably. oil.
  • the only break of the closed system is dueto shaft ZJ, which connects with'lever b1 on the outside. Leakage through the bearing of shaft b is prevented by a suitable pac ing gland in housing b2, Fig. 4.
  • Lever b1 is to .befconnect-ed by suitable means to an axle ofa vehicle, while the body casting@ is mounted on some part of the vehicle body, to oppose resistance to movements of the aXle in the'manner described below.' ⁇ l 'K k f'
  • the inner end ofshaft bis squared,as at b5, Fig. 1,arid has rockerarm o6 ⁇ clamped* to it vby bolt o7.
  • Thev rocker arm depends through opening L13 in the cylinder wall and opening o16'Y in the piston walland ,is connected by link bS to knuckle b9, which is mounted in the head @Z1 of piston cl.
  • ports 613 Y are formed in suitable bosses in the piston casting and vconnect the compressionl chamber beyond head d1 on the left with that beyond diaphragmA Z2 on the right, while preventing communicationV of either-chamber with the open central part ofthe piston and the rocker V.the ⁇ close fitting pistonv valve el.”
  • the bore vis l broken into three faces by the two ⁇ annular grooves 612 and valve e1 is shown registering with ⁇ the middle lface, being normally held in so j in perfect alignment.
  • The-two springs are' made otsuchglength and spacer rings e3 .'a'ndc) Vare chosen ⁇ of :suclr thickness as to Yhold valve ,e1-,in thev position shown, registerlling Withthe middle if'acef'o the -pistonbore.
  • v"Butspring @-1v is seen to be astouter spring than 611, so that While the retarding action is alike yin bothy directions, rapidly building ⁇ upA ⁇ to af'maXi'mumandthenvcontinuing substantially constantythis maximum is greater inione direction than in the other.
  • the retarding ⁇ l force in either direction may be determined,asdesired7 by a spring of suitable strength.
  • a ⁇ fine gauze a8 may! be-soldered over' holes L1-i to arrest any foreign-matter.
  • Plug a7 may bef-unscrewed land-removed for cleaninglthe gauze.
  • a hydraulic shock abso-rber comprising a closed cylinder, a hollow piston having one end open, a compression chamber on each side of the piston, a diaphragm in the piston forming a chamber adjacent its open end, a. conduit through the piston Iconnecting the chamber within the same to the compression chamber remote therefrom, valve mechanism controlling the passage of liquid through the chamber within the piston adapted to open on pressure in either direction, and two springs, one reacting to restrain the opening of the valve in one direction and the other reacting to restrain the opening in the other direction, so that during a predetermined initial amount of movement of the piston from normal position, the valve shall remain closed.
  • a hydraulic shock absorber comprising a closed cylinder, a hollow double-ended piston therein, a compression chamber on each side of the piston, means for operably connecting Vthe shocked member to be restrained to the piston, a. diaphragm across the interior of the piston forming a chamber at one end thereof, an opening through the end of the piston connecting theV chamber within the same to the adjacent compression chamber and admittingthe flow of liquidv from one chamber to the other, conduits through the body of the piston connecting the chamber within the same to the compression chamber remote therefrom and admitting passage of liquid between such two chambers, a piston valve fitting and slidable in the interior of thechamber within the piston, passage ways adapted to enable fluid to pass from one side to theother of the piston valve when the valve is moved from normal position, twosprings, one reacting to restrain the piston valve from moving on pressure in one direction and the other reacting torestrain the piston valve from moving on pressure in the other direction.
  • a hydraulic shock absorber comprising a closed cylinder, a hollow double-ended piston therein, a compression chamber on each side of the piston, means for operably connecting the shocked member to be restrained with the piston, a diaphragm across the piston Vforming a chamber at one end thereof, an opening through the end of the piston connecting the chamber within ⁇ the same to the adjacent compression chamber,
  • -A hydraulic shook absorber comprising a closed cylinder, 'a hollow double-ended piston therein, a compression chamber Von each side of the piston, means for operably connecting the shocked7 vmember to be restrained with the piston, adiaphragm4 exf tending-across the piston forminga chamber at one end thereof, a co-axial cylindrical projection extended from the ⁇ diaphragm into the chamber. within the piston, a hole through g,
  • Y lgroove'sintothree faces a piston Valve slid- 'HAS hydraulic shock absorber comprising y a-cylinderl closed at both ends; a hollow pis ⁇ tonlintheeyl'inder; a Valve seat formed byy afthickened portion of the piston wall,-hav ing afn'ished bore broken by two annular ably'fitting; the-l bore; lay-passes' formed by. slots 'acrossthe'V two eXtreme faces; and spring's adapted to hold the piston Valve in ⁇ regfisteriwith''th-e3middle face? to close theby' 'pa'SSBSl In witness". whereof? I1 haveV signed this' speci-ication.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
US201183A 1926-06-24 1927-06-24 Shock absorber device Expired - Lifetime US1866671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15886/26A GB275761A (en) 1926-06-24 1926-06-24 Improvements in and relating to shock absorber devices

Publications (1)

Publication Number Publication Date
US1866671A true US1866671A (en) 1932-07-12

Family

ID=10067289

Family Applications (1)

Application Number Title Priority Date Filing Date
US201183A Expired - Lifetime US1866671A (en) 1926-06-24 1927-06-24 Shock absorber device

Country Status (5)

Country Link
US (1) US1866671A (pt)
BE (1) BE342926A (pt)
DE (1) DE471856C (pt)
FR (1) FR636273A (pt)
GB (1) GB275761A (pt)

Also Published As

Publication number Publication date
BE342926A (pt)
DE471856C (de) 1929-02-19
FR636273A (pt) 1928-04-05
GB275761A (en) 1927-08-18

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