Classifications

• • 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
  • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
  • F16D25/083—Actuators therefor

Definitions

• the invention relates to a Kupplungs compellingzylinder overlooked with a Nehmerzylin- dergeophuse in which a piston between a rest position and a working position is guided back and forth movable, wherein an interface between the piston and the slave cylinder housing is radially outwardly surrounded by a cover.
• the interface between the piston and the slave cylinder housing is radially outwardly surrounded by a bellows made of a flexible plastic material, such as rubber, which prevents ingress of dirt between the piston and the slave cylinder housing.
• a bellows deforms as the piston reciprocates.
• the attachment of the bellows is relatively expensive, among other things, because of its flexibility.
• the object of the invention is to provide a Kupplungs redesignate a Kupplungs redesignate a preamble of claim 1, which is simple in construction and inexpensive to produce.
• the object is in a Kupplungs strictly speaking with a slave cylinder housing in which a piston between a rest position and a working position is guided back and forth movable, wherein an interface between the piston and the slave cylinder housing is radially outwardly surrounded by a covering, achieved in that the covering is formed of a relatively rigid material, in particular of a relatively rigid plastic material, and has the shape of a sleeve which releasably on a front side, that is repeatedly non-destructively separable, is attached to the slave cylinder housing.
• the covering device according to the invention is in contrast to a bellows, which is attached at one end to the slave cylinder housing and with its other end to the piston so that it deforms during a piston movement, attached only at one end to the slave cylinder and does not deform, when the piston moves back and forth between the rest position and the working position.
• a preferred embodiment of the Kupplungs nowadays is characterized in that the covering device has at least one snap hook, which engages in the slave cylinder housing.
• a further preferred embodiment of the clutch slave cylinder device is characterized in that the snap hook extends in the axial direction and is arranged in the circumferential direction between two axial recesses in the cover device. The recesses improve the flexibility of the snap hook.
• Another preferred embodiment of the Kupplungs alone is characterized in that the two axial recesses are covered by a skirt which extends from the cover. The skirt prevents dirt from entering the interior of the cover through the axial recesses.
• Another preferred embodiment of the clutch slave cylinder device is characterized in that several snap hooks emanate from the slave cylinder housing facing the front side of the cover. Preferably, the snap hooks are evenly distributed over the circumference of the cover.
• a further preferred embodiment of the clutch slave cylinder device is characterized in that at least two fastening straps are angled away from the cover device.
• the fastening straps serve to fasten the covering device alternatively or in addition to the snap hooks on a support structure, for example a coupling housing.
• a further preferred embodiment of the clutch slave cylinder device is characterized in that the slave cylinder housing facing end face of the cover means has a radially inwardly projecting web, which bears against the slave cylinder housing.
• the web is formed circumferentially and forms a support surface for the covering device on the slave cylinder housing.
• a further preferred embodiment of the clutch slave cylinder device is characterized in that the web is clamped between the slave cylinder housing and one end of a spring device.
• a further preferred embodiment of the clutch slave cylinder device is characterized in that the thickness of the web is adapted to the contour and / or the pitch of the one end of the spring device.
• the spring device is preferably a helical compression spring with the aid of which a release bearing mounted on the piston is pretensioned.
• the web preferably has the same pitch as the associated end of the helical compression spring.
• a further preferred embodiment of the clutch slave cylinder device is characterized in that between the other end of the spring device and the piston or a release bearing mounted on the piston, a stripping element is clamped, which abuts the inside of the cover and is moved along when the piston relative to the slave cylinder housing moves.
• the scraper element is preferably made of rubber and closes off the interior of the covering device to the outside.
• FIG. 1 shows a Kupplungs constitutional unit (A) of a first embodiment in longitudinal section;
• Figure 2 shows the Kupplungs supportivezylinder driving of Figure 1 in plan view and
• Figure 3 shows a Kupplungs dormitorer observed according to a second embodiment in longitudinal section.
• FIG. 1 shows a longitudinal section of a clutch slave cylinder device 1.
• the clutch slave cylinder device 1 is part of a hydraulically actuated disengagement system and comprises a slave cylinder housing 2.
• the slave cylinder housing 2 is arranged concentrically or coaxially around at least one (not shown) transmission input shaft in the installed state and attached, for example, to a transmission housing part.
• the slave cylinder housing 2 has a substantially circular cylinder jacket-shaped cylinder wall 4, to which a guide sleeve 6 is spaced radially inwardly.
• the guide sleeve 6 is fixed by means of an annular flange 7 on the slave cylinder housing 2.
• annular space 8 is formed, which is also referred to as a pressure chamber.
• the pressure chamber 8 is bounded in the axial direction by the annular flange 7 and a piston 9.
• the piston 9 is provided to the pressure chamber 8 out with a U-ring seal 10, the sealing lips rest against the guide sleeve 6 and the cylinder wall 4 sealingly.
• a release bearing 11 is mounted, which is supported in the installed state of the Kupplungs strictlyzylinder Anlagen 1 on disengaging a friction clutch.
• the actuation of the clutch slave cylinder device 1 is effected by an axial displacement of the piston 9 from a rest position to the working position shown in Figure 1.
• the U-ring seal 10 of the piston 9 is arranged in the vicinity of the annular flange 7 of the guide sleeve 6.
• a piston displacement is triggered by a pressure medium of the pressure chamber 8.
• the slave cylinder housing 2 is integrally connected to a discharge nozzle 12, at its free end a pressure port 14 is provided.
• the pressure port 14 serves to connect the Kupplungs strictlyzylindereinrich- device 1 hydraulically with a clutch master cylinder device.
• a helical compression spring 16 is clamped between the release bearing 11 and a collar 15 which projects radially outward from the slave cylinder housing 2.
• the release bearing 11 is biased.
• One end 21 of the helical compression spring 16 is located at the release bearing 11 with the interposition of a support ring 20.
• the other end 22 of the helical compression spring 16 abuts against the collar 15 of the slave cylinder housing 2.
• a cover sleeve 28 which has substantially the shape of a circular cylinder jacket, arranged concentrically to the cylinder wall 4 of the slave cylinder housing 2.
• the inner diameter of the cover sleeve 28 is slightly larger than the outer diameter of the release bearing 11, so that the release bearing 11, at least partially, can move into an annular space 29, when the piston 9 with the release bearing 11 from the working position shown in Figure 1 in the Rest position is moved.
• the annular space 29 is bounded radially on the outside by the covering sleeve 28.
• annular space 29 Radially inside the annular space 29 is bounded by the cylinder wall 4 of the slave cylinder housing 2 and the piston 9 and the groove ring seal 10.
• the helical compression spring 16 is partially arranged in the annular space 29. To the release bearing 11 out the cover sleeve 28 is open.
• the cover sleeve 28 has a radially inwardly projecting web 30, which forms a support surface.
• the support surface formed by the radially inwardly circumferential web 30 abuts against the slave cylinder housing 2.
• the attachment of the cover sleeve 28 is effected by means of a snap-action hook 32 which engages in a corresponding recess which is recessed in the slave cylinder housing 2.
• FIG. 2 shows the clutch slave cylinder device 1 from FIG. 1 in plan view.
• the four snap hooks 32 and 43 to 45 are distributed uniformly in the circumferential direction.
• the mobility of the snap hooks 32, 43 to 45 is achieved by incisions or recesses adjacent in the circumferential direction to the Snap hooks extend in the axial direction.
• the incisions are covered by aprons 38, 39, 40, 41, which are provided outside the cover sleeve 28 in the region of the snap hooks.
• the attachment tabs 51 and 54 are each provided with a through hole 52, 55 which serves to pass a fastener such as a screw.
• the attachment tabs 51, 54 serve to secure the cover sleeve 28 to a coupling housing part, such as a clutch cover.
• the covering sleeve 28 according to the invention is fastened to the slave cylinder housing instead of a bellows.
• the cover sleeve 28 By integrated into the cover sleeve 28 snap hook the attachment of the cover sleeve 28 is simplified to the slave cylinder housing 2.
• the snap hooks can serve as a transport lock. However, the snap hooks can also serve to secure the cover sleeve 28 to the slave cylinder housing during normal operation of the clutch slave cylinder device.
• the fastening tabs 51, 54 which are also referred to as mounting tabs, serve to fix the cover sleeve 28.
• the different mounting options can be used individually or in combination, depending on the type of soiling and load.
• the cover sleeve according to the invention is much easier to install compared to a solution with bellows. Due to the ease of assembly and the simplicity of the individual components is a very cost-effective solution.
• FIG. 3 shows a similar clutch slave cylinder device 61 as in FIGS. 1 and 2.
• the clutch slave cylinder device 61 includes a slave cylinder housing 62 having an outer cylinder wall 64 and an inner cylinder wall 66.
• the cylinder walls 64 and 66 each have the shape of a circular cylinder jacket and are arranged coaxially with each other.
• the cylinder walls 64 and 66 are integrally connected by a connecting ring 67 and limit in the radial direction an annular space 68, in which a piston 69 is received with a U-ring seal 70 movable back and forth.
• a release bearing 71 is attached at the groove ring seal 70 facing away from the end of the piston 69.
• a helical compression spring 76 is clamped in the axial direction.
• the helical compression spring 76 has an end 81 facing the release bearing 71 and an end 82 facing away from the release bearing 71.
• a cover sleeve 88 is disposed in the region of an interface 85 between the piston 69 and the U-ring seal 70 and the outer cylinder wall 64.
• the cover sleeve 88 has substantially the shape of a circular cylinder jacket which surrounds the interface 85 and prevents ingress of dirt.
• the cover sleeve 88 has at its end facing away from the release bearing 71 a web 90 which extends radially inwardly.
• the radially inwardly of the cover sleeve 88 circumferential web 90 is clamped or clamped between the end 82 of the helical compression spring 76 and the slave cylinder housing 62.
• the thickness of the web 90 that is the dimension of the web 90 in the axial direction of the cover sleeve 88, is adapted to the pitch of the helical compression spring 76.
• a stripping element 92 is clamped or clamped.
• the stripping element 92 has a support ring 94 made of a resilient plastic material, for example rubber.
• a support ring 95 is disposed of sheet metal, which prevents the end 81 of the helical compression spring 76 digs into the support ring 94.
• a wiper lip 100 is attached, which is integrally connected to the support ring 94.
• the free end of the wiper lip 100 abuts the inside of the cover sleeve 88.
• the scraper element 92 serves to further reduce contamination of the interior of the cover sleeve 88.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
• Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38026970

Family Applications (1)

Country Status (5)

Cited By (7)

Families Citing this family (7)

Citations (5)

Family Cites Families (9)

• 2006
  • 2006-06-07 BR BRPI0611972-7A patent/BRPI0611972B1/pt active IP Right Grant
  • 2006-06-07 EP EP06753251A patent/EP1896744A1/de not_active Withdrawn
  • 2006-06-07 DE DE112006001435.8T patent/DE112006001435C5/de active Active
  • 2006-06-07 WO PCT/DE2006/000976 patent/WO2006136132A1/de active Application Filing
  • 2006-06-07 CN CN2006800226942A patent/CN101203689B/zh active Active

Patent Citations (5)

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