WO2007079707A1 - Kolben-zylinder-einheit - Google Patents
Kolben-zylinder-einheit Download PDFInfo
- Publication number
- WO2007079707A1 WO2007079707A1 PCT/DE2006/002246 DE2006002246W WO2007079707A1 WO 2007079707 A1 WO2007079707 A1 WO 2007079707A1 DE 2006002246 W DE2006002246 W DE 2006002246W WO 2007079707 A1 WO2007079707 A1 WO 2007079707A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- compression spring
- adapter
- cylinder unit
- cylinder
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/12—Connection to driving members with piston-rods, e.g. rigid connections
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/088—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members being distinctly separate from the axis of rotation
Definitions
- the invention relates to a piston-cylinder unit according to the preamble of the first claim.
- Piston-cylinder units in vehicle systems have piston rods which are pivotally mounted on the piston at an angle and act with their piston-side end against a compression spring arranged in the cylinder.
- a piston unit is described in which in the direction of the spring to ensure contact with this a centering approach is provided, which engages in the spring.
- the disadvantage is that during a pivoting movement of the piston unit, the spring is moved by the engaging centering approach and thus creates a friction between the piston unit and the spring. This can lead to marks and damage to the piston unit. Furthermore, it is no longer guaranteed by the radial deflection of the spring whose complete concern with the piston unit.
- the object of the invention is to develop a piston-cylinder unit, which ensures a reliable contact of the piston to the compression spring even at different angular positions of the piston and avoids damage to the piston.
- the piston-cylinder unit consists of a cylinder housing and a piston rod having a piston which is axially displaceable in the cylinder housing and pivotable relative to the cylinder axis at an angle, wherein the piston in the direction of the inner diameter of the cylinder housing has a spherical segment-shaped surface and against the piston from the piston rod opposite side of a cylinder arranged in the compression spring acts, according to the invention, the compression spring acts in the direction of the piston against a convex or concave curved surface, which ensures a pivotal movement of the piston.
- the surface can be arranged on the piston itself or an adapter located between piston and compression spring.
- a convexly curved surface is formed on the piston in the direction of the compression spring, which rests against the compression spring.
- the piston may have a concavely curved surface (pressure surface) in the direction of the compression spring against which the pressure spring rests.
- an adapter to act on the end of the pressure spring pointing in the direction of the piston, wherein the adapter has a surface that is concavely or convexly curved in the direction of the piston and bears against the pressure surface of the piston.
- the adapter is preferably attached to the pointing in the direction of the piston end of the compression spring, but may also be arranged separately in the cylinder housing between the piston and compression spring.
- the adapter has a concave curved surface both in the direction of the piston and in the direction of the piston-facing end of the compression spring. If the adapter is designed as a separate component, it can either rest radially on the inside of the cylinder housing with a diameter or be spaced therefrom.
- the adapter is designed as a ball.
- the adapter has a spherically (convexly) curved surface, it bears against the piston at a radially encircling or concavely curved pressure surface of the piston.
- the main advantage of the solution according to the invention is that a radial deflection of the compression spring is avoided during a pivoting movement of the piston.
- the compression spring performs only an axially directed movement.
- the system between piston and compression spring is thereby possibly improved with the interposition of an adapter.
- FIG. 1 shows a piston-Zyun unit with a piston having a convexly curved in the direction of the compression spring pressure surface against which the compression spring is applied
- FIG. 2 shows a piston-cylinder unit with a piston which has a pressure surface which is concavely curved in the direction of the compression spring and against which the pressure spring rests,
- FIG. 3 shows a piston-cylinder unit with a piston which has a pressure surface concavely curved in the direction of the compression spring, against which a convexly curved surface of an adapter attached to the compression spring rests,
- Fig. 4 a piston-cylinder unit acc. Fig. 3, but with a separate adapter in the form of a sphere.
- FIGS. 1 to 4 show a piston-cylinder unit which consists essentially of a cylinder housing 1 and a piston 2 which can be displaced axially therein and which is pivotable at an angle ⁇ relative to the cylinder axis AZ, with a piston rod 3.
- the piston 2 has, in the direction of the inner diameter 1.1 of the cylinder housing 1, a spherical segment-shaped surface Ak.
- a pressure spring 4 disposed in the cylinder housing 1 acts on the side of the piston 2 facing away from the piston rod 3.
- a sealing bellows 6 seals.
- FIG. 1 A similar embodiment of a piston-cylinder unit, but with a concave in the direction of the compression spring 4 pressure surface D2 of the piston 2, against which the compression spring 4 is applied, the figure 2.
- FIG. 1 A further embodiment of the piston-cylinder unit with a piston 2, which has a conical pressure surface D3 in the direction of the compression spring 4, is shown in FIG.
- the conical pressure surface D3 acting as an adapter 7 ball 8 engages.
- the ball 8 presses in the direction of the piston 2 facing end of the compression spring 4.
- the ball 8 engages something in the fitting / n turn / s of the compression spring 8 a.
- the novel design of the pressure surfaces possibly in conjunction with an adapter ensures that the piston 2 can pivot by the angle ⁇ , without the compression spring 4 is deflected in the radial direction. As a result, a safe investment of the compression spring 4 is given to the piston 2 and damage to the piston 2 are avoided.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06828677A EP1977115A1 (de) | 2006-01-11 | 2006-12-14 | Kolben-zylinder-einheit |
BRPI0620927-0A BRPI0620927A2 (pt) | 2006-01-11 | 2006-12-14 | unidade de pistão-cilindro |
DE112006003462T DE112006003462A5 (de) | 2006-01-11 | 2006-12-14 | Kolben-Zylinder-Einheit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006001465 | 2006-01-11 | ||
DE102006001465.0 | 2006-01-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007079707A1 true WO2007079707A1 (de) | 2007-07-19 |
Family
ID=37943807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/002246 WO2007079707A1 (de) | 2006-01-11 | 2006-12-14 | Kolben-zylinder-einheit |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1977115A1 (de) |
CN (1) | CN101356376A (de) |
BR (1) | BRPI0620927A2 (de) |
DE (1) | DE112006003462A5 (de) |
WO (1) | WO2007079707A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2446331C1 (ru) * | 2010-11-08 | 2012-03-27 | Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Пространственный шарнирный четырехзвенник |
US20190226464A1 (en) * | 2016-05-19 | 2019-07-25 | Innas Bv | A hydraulic device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205069A (ja) * | 1984-03-29 | 1985-10-16 | Nissin Kogyo Kk | 流体圧式シリンダ |
WO1990007064A1 (en) * | 1988-12-13 | 1990-06-28 | Frank Douda Nimmo | A fluid actuated cylinder assembly with a floating cylinder head |
US5836235A (en) * | 1993-09-15 | 1998-11-17 | Fahrzeugtechnik Ebern Gmbh | Piston for hydraulic actuating cylinders |
-
2006
- 2006-12-14 WO PCT/DE2006/002246 patent/WO2007079707A1/de active Application Filing
- 2006-12-14 CN CNA2006800509528A patent/CN101356376A/zh active Pending
- 2006-12-14 EP EP06828677A patent/EP1977115A1/de not_active Withdrawn
- 2006-12-14 BR BRPI0620927-0A patent/BRPI0620927A2/pt not_active Application Discontinuation
- 2006-12-14 DE DE112006003462T patent/DE112006003462A5/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205069A (ja) * | 1984-03-29 | 1985-10-16 | Nissin Kogyo Kk | 流体圧式シリンダ |
WO1990007064A1 (en) * | 1988-12-13 | 1990-06-28 | Frank Douda Nimmo | A fluid actuated cylinder assembly with a floating cylinder head |
US5836235A (en) * | 1993-09-15 | 1998-11-17 | Fahrzeugtechnik Ebern Gmbh | Piston for hydraulic actuating cylinders |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2446331C1 (ru) * | 2010-11-08 | 2012-03-27 | Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Пространственный шарнирный четырехзвенник |
US20190226464A1 (en) * | 2016-05-19 | 2019-07-25 | Innas Bv | A hydraulic device |
US11067067B2 (en) * | 2016-05-19 | 2021-07-20 | Innas Bv | Hydraulic device |
Also Published As
Publication number | Publication date |
---|---|
BRPI0620927A2 (pt) | 2011-11-29 |
EP1977115A1 (de) | 2008-10-08 |
DE112006003462A5 (de) | 2008-09-18 |
CN101356376A (zh) | 2009-01-28 |
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