WO2018068970A1

WO2018068970A1 - Controller housing for a clutch actuator

Info

Publication number: WO2018068970A1
Application number: PCT/EP2017/072958
Authority: WO
Inventors: Luc Jonckheere; Andreas Eck; Alexander Kilian
Original assignee: Zf Friedrichshafen Ag
Priority date: 2016-10-13
Filing date: 2017-09-13
Publication date: 2018-04-19
Also published as: CN109996971B; CN109996971A; DE102016219901A1

Abstract

The invention relates to a controller housing for a clutch actuator within a clutch bell, wherein the controller housing has a supporting connecting surface for a holding connection to the clutch actuator and the controller housing, in a final mounted position, is at least partially arranged in the clutch bell. According to the invention, a lid fixes the controller housing at least in one degree of freedom relative to the clutch bell.

Description

Control box for a clutch actuator

The invention relates to a control housing for a clutch actuator according to the preamble of patent claim 1.

DE 197 16 600 A1 describes a clutch actuator within a clutch bell. The clutch actuator is disposed concentrically with a transmission input shaft and secured to a bulkhead to a transmission housing. The control housing comprises valves and at least parts of a sensor device. Furthermore, the control housing has at least one Druckmittelzuführleitung and Druckmittelabführleitung for the clutch actuator and a cable connection for the sensor device and for driving the valves in the control housing. To disassemble the control housing, the clutch bell has a maintenance opening in a radial lateral surface.

The pressure medium guide channels between the control housing and the clutch actuator are embodied within a cylinder wall of the clutch actuator. This complicates the manufacture of the clutch actuator. It is Z. B. hardly possible to deburr a connection opening of an opening into the cylinder pressure medium conveying channel. The clutch actuator carries the control housing directly. Consequently, the clutch actuator must absorb all support forces caused by the control housing. For this purpose, the clutch actuator has a support surface in which also engage fastening means for the control housing.

The object of the present invention is to minimize the disadvantages known from the prior art.

The invention is achieved in that a cover fixes the control housing at least in one degree of freedom relative to the clutch bell. Notwithstanding the cited prior art, the cover takes over part of the holding forces for the control housing. The cover and the connection surface are mutually distances, so that there is a much better power distribution at the support points as well as on the control housing.

Furthermore, it is provided that the cover has at least one radial projection in the direction of the control housing, which has a holding surface for the at least one degree of freedom. The cover preferably has two retaining surfaces, so that two degrees of freedom of the control housing are blocked by the lid.

Preferably, the holding surface is designed as a clamping surface. As a result, a backlash is achieved with the rattling noises are minimized.

The lid is preferably designed diametrically to the connection surface. This results in a large support length for the control housing.

In a further advantageous embodiment, the cover has a spacer sleeve portion, starting from an end-side mounting flange. The spacer sleeve section results in that you can build the control housing very compact and still there is a support connection between the cover and the coupling housing. It is much cheaper to extend the cover functionally than to enlarge the control housing.

According to a further subclaim, the control housing has a separate closure lid, independently of the lid. This results in the advantage that with a disassembly of the lid for the removal of the control housing from the clutch bell, the control housing itself still remains completely closed.

The control housing is preferably held to the clutch actuator via a support ring separate from the clutch actuator. The advantage is that the coupling actuator no special requirements for the combination with the control housing must be performed. In particular, no actuator surface for the control housing must be designed on the actuator cylinder. In a further structural embodiment, the support ring on a support surface on which the connection surface of the control housing is fixed. The support ring can be formed by a simple sheet metal ring which carries on the one hand the clutch actuator and on the other hand, the control housing. The support ring is easily attached during assembly with all pre-assembled modules in the clutch bell.

In a support ring made of a sheet metal blank is a comparatively thin wall thickness. Although it can provide reinforcements and stiffeners, but make the support ring more expensive. As an alternative stiffening construction, the control housing has at least one receiving opening for a support web of the supporting ring that is angled away from the supporting surface. Consequently, the control housing has two connection points.

Preferably, line passage openings of the control housing are combined in a plane displaced from a lateral surface of the control housing, the cover having a receptacle for this plane. The staggered plane stiffens the control housing, with the summary providing a simpler housing geometry than if one provided a separate plane for each line.

According to a subclaim, an annular seal is arranged between the offset plane and the receptacle. The receptacle is designed as a passage opening. The ring seal prevents the ingress of dirt and moisture through the receptacle.

So that the at least one line coupling does not have to be dismantled during assembly of the cover, the cross-section of the receptacle is dimensioned larger than a maximum cross-sectional area of a line coupling in the assembly direction.

Another measure to simplify the connection of the control housing to the clutch actuator is that between the control housing and the clutch actuator, a pressure medium line adapter is arranged, which is the Control housing connects to the clutch actuator. This avoids channeling within the actuator and eliminates the need for hoses. Another great advantage is that you then simple plug-in couplings between the control housing and the pressure medium line adapter that you do not have to separately close or solve. The plug-in couplings are closed by the assembly of the control housing.

It can be provided that the pressure medium line adapter is attached to the support ring. Even with this measure, the use of a non-individualized Kupplungsaktuators is promoted.

In a further embodiment, the pressure medium adapter connects the control housing to an axial end side of the clutch actuator. Due to the pressure medium connection, no loss length occurs in the cylinder of the clutch actuator. Theoretically, the piston of the clutch actuator can retract to the cylinder bottom.

Preferably, all of the connections in communication with the control housing have the same radial alignment with the connection surface of the control housing. As a result, a simple radial assembly movement can be easily realized.

The invention will be explained in more detail with reference to the following description of the figures.

It shows:

Fig. 1 assembly drawing of the control housing in the clutch bell; Fig. 2 clutch bell with gear housing;

Fig. 3 supporting ring for the control housing as a single part

Fig. 4 connection between the control housing and support ring as a detail;

Fig. 5 u. 6 detail enlargement to FIG. 1

Fig. 7 Connection of the lid with the control housing

Fig. 8 cover as a single part;

9 shows associations between the control housing and the support ring;

Fig. 10 top view of the mounted lid; Fig. 1 1 section through the mounted lid;

Fig. 12 pressure medium line adapter;

FIG. 13, like FIG. 12, with the control housing; FIG.

Fig. 14 Detail view of the connection between pressure medium adapter and

Control housing / clutch

Fig. 15 - 17 pressure medium line adapter to the flow channel in a partition wall

FIG. 1 shows a perspective view of a clutch bell 1. The clutch bell 1 is shown in the figure 2 as a single part, wherein the representation of an adjoining transmission housing 3 has been omitted in detail. Furthermore, it was dispensed with the representation of a flywheel on a crankshaft, which closes the clutch bell end.

The clutch bell 1 has in a partition wall 5 to the transmission housing 3 via a through hole 7 for a transmission input shaft 9. Furthermore, a mounting hole 1 1 can be seen, via which even in an already mounted in the drive train clutch bell 1 an intervention in the interior of the clutch bell. 1 is possible.

Concentric with the transmission input shaft 9, a clutch actuator 13 is disposed within the clutch bell 1. The clutch actuator 13 is used for opening and closing a clutch, not shown. With regard to the structural design of the clutch actuator can be made by way of example to DE 10 2005 053 408 A1.

In addition, a control housing 15 is disposed within the clutch bell 1. In this embodiment, the control housing 15 is completely enveloped by the clutch bell 1.

As can be seen from the figure 1, the cross section of the mounting hole 1 1 is greater than the cross section of the control housing 15 in the mounting direction. Consequently, it can be provided that the control housing is still accessible even when the flywheel is mounted. 1 shows a supply line 17 for components within the control housing 15. The supply line 17 may be connected to a power electronics and also comprise a signal line for a sensor, the z. B. detects the stroke of the clutch actuator.

The mounting opening 1 1 in a circumferential surface 19 of the clutch bell 1 is closed by a cover 21 separate from the clutch bell.

Both the clutch actuator 13 and the control housing 15 are attached to a support ring 23 as shown in FIG. For the attachment of the support ring 23 with the partition wall 5 three tabs 25 are provided with mounting holes 27. Furthermore, fastening means 29 for connecting the support ring 23 to a cylinder 31 (see FIG. 4) of the clutch actuator 13 are shown. In this embodiment, it is rivet shanks, which are positively connected to the cylinder 31. But you can also provide a screw.

The support ring has a support surface 33, is fixed on a connection surface 35 of the control housing (see Fig. 1). The support surface 33 is formed by two retaining plates 39, which are angled away from an annular base body 37 and in turn have a reinforcing web 41 in the longitudinal extent of the support surface 33. The two retaining plates 39 are arranged spaced apart in the circumferential direction to the base body 37 and also have mounting holes 43 for the control housing.

Between the retaining plates 39, the support ring 23 has supporting webs 45 angled toward the support surface 33, for which the control housing 15 has at least one receiving opening 47. In the figure 4, the receiving opening 47 delimiting wall parts of the control housing can be seen.

From the synopsis of Figs. 5 to 7, the assembled clutch actuator 13 can be seen together with the control housing 15 in the final assembly position, in which a support ring 23 on the partition wall 5 together with the clutch actuator 13 and the control housing 15 is fixed. By means of the lid 21, the mounting opening 1 1 is closed in the clutch bell 1.

The cover 21 fixes the control housing 15 in at least one degree of freedom relative to the clutch bell 13. For this purpose, the cover 21 has at least one radial projection 49 in the direction of the control housing 15, which has a retaining surface 51 for the at least one degree of freedom. In the figure 8, the lid 21 is shown as a single part with a view of the inside of the lid.

The holding surfaces 51 are designed as clamping surfaces and engage opposite side of the control housing 15 (see Fig. 7). The combination of FIGS. 5 and 7 reveals that the cover 21 is made diametrically to the connection surface 35. Thus, all fasteners engage the end of the control housing 15.

Furthermore, the cover 21 has a spacer sleeve section 53 starting from an end-side fastening flange 55. This spacer sleeve portion 53 is in the direction of a main axis 57 (see FIG. 1 1) of the control housing 15 in axial overlap with the control housing 15th

As already stated, the control housing 15 has various supply lines. Cable passage openings 59 of the control housing 15 are combined in a plane 63 which is displaced to a jacket surface 61 of the control housing 15, the cover 21 having a receptacle 65 for this plane 63 (see FIGS. 5, 6 and 10). Between the offset plane 63 and the receptacle 65, a ring seal 67 is arranged, which prevents a dirt entry between the cover 21 and the control housing 15. A clutch bell seal 69 is clamped between the mounting hole 1 1 of the clutch bell 1 and the mounting flange 55 of the deck 21, as shown in FIG. 1 1 shows. The cross-section of the receptacle 65 is greater than a maximum cross-sectional area of a pipe coupling 71 in the mounting direction, as will be illustrated with the Fig. 6. 9, a closure lid 75 provided with stiffening webs 73 of the control housing 15 is shown in detail. The closure lid 75 can be removed laterally if necessary. The control housing has the separate closure lid 75 independently of the lid 21.

FIGS. 9 and 12 to 14 are intended to show that a separate pressure medium line adapter 77, which connects the control housing 15 to the clutch actuator 13 via a first flow path 79, is arranged between the control housing 15 and the clutch actuator 13. The pressure medium line adapter 77 comprises a rigid support body 94 with a base plate 96 as a contact surface support to the support ring 23. The base plate 96 is provided with stiffening ribs 98, between which the flow paths 79; 81 are executed.

Furthermore, the pressure medium line adapter 77 has a further flow path 81 between the control housing 15 and a transmission brake 83 (FIG. 1). All connections 95 connected to the control housing 15; 97 of the pressure medium line adapter have the same radial orientation to the pad 35 of the control housing 15 as plug-in couplings 99; 101 of the control housing, which mesh in the assembled state.

Fig. 12 shows the mechanical and the flow connection between the pressure medium line adapter 77 and the support ring 23 and the clutch actuator 13. Mechanically, the pressure medium line adapter 77 is attached to the support ring 23. The connections 95; 97 have a larger diameter than the carrier body 91. Therefore, the support ring 23 has a recess. There is no carrying connection between the cylinder 31 of the clutch actuator 13 and the pressure medium line adapter 77. The pressure medium line adapter 77 has two attachment openings 85 for receiving fastening bolts 87 or screws. For this, the support ring has corresponding closing surfaces, such. B. threaded bolt. Both flow paths are designed as a simple angle line. Simple O-rings 89, 91 seal the outlet openings in the direction of the clutch actuator 13 and in the direction of the transmission brake 83. The synopsis of Figures 12 and 14 illustrates that the pressure medium adapter 77, the control housing 15 with a connection opening 92 connects to an axial end face 93 of the clutch actuator 13.

As FIGS. 15 to 17 show, the pressure medium line adapter 77 is connected to a flow channel 103 within the partition wall 5 between the clutch bell 1 and the transmission housing 3.

The flow channel 103 bridges within the partition wall 5 a lateral offset between the pressure medium line adapter 77 and the transmission brake 83, wherein the flow channel 103 opens to the transmission brake 83 in the clutch bell 1. From the transmission brake is simplified only a pressure medium cylinder 105 shown.

The flow channel 103 in the partition wall 5 is designed as an angular channel with two intersecting channel sections 107; 109 executed and can therefore be easily made mechanically. The partition wall 5 has in the region of an outlet opening 1 1 1 of the flow channel to a greater wall thickness, as at a connection opening 1 13 to the pressure medium line adapter. On the presentation of a through hole for receiving the transmission brake has been omitted. This passage opening is within the range of greater wall thickness, so that a particularly large guide length is available for an actuator of the transmission brake.

As can be seen in particular from the figure 16, the outlet opening 1 1 1 and a clamping surface 1 15 for the transmission brake 83 on the partition 5 an identical orientation. Consequently, the sealing of the outlet opening 1 1 1 can be achieved directly via the clamping of the transmission brake 83.

For assembly, a structural unit between the support ring 23 and the clutch actuator 13 is closed. In the next step, the pressure medium line adapter 77 is attached as shown in FIG. Thereafter, the control housing 15 including the supply lines 17 and connected line coupling 71 is mounted via the connection surface 35 on the support surface 33 of the support ring 23. In a further step, this unit is connected via the support ring 23 in the coupling 1 attached. The assembly of the transmission brake 83 can be done before or after the installation of the support ring 23 with its attachments.

Subsequently, the supply lines are passed through the mounting holes 11 of the clutch bell 1. In a final step, the cover 21 is used together with the ring seal 67 and the clutch bell seal 69, whereby the fixation of the control housing with the lid 21 is closed. If components within the control housing 15 are damaged, then you can remove the lid 21 and remove the control housing radially through the mounting hole 11 from the clutch bell 1. The pressure medium line adapter 77 remains on the support ring 23 in the clutch bell first

REFERENCE CHARACTERS

Clutch bell 61 lateral surface

Gearbox 63 level

Partition 65 Recording

Through opening 67 Ring seal

Transmission input shaft 69 Clutch bell seal

Mounting hole 71 Line coupling

Clutch actuator 73 Stiffener webs

Control housing 75 Cover

Supply line 77 Pressure medium line adapter

Lateral surface 79 flow path (first)

Cover 81 further flow path

Carrier ring 83 Transmission brake

Tabs 85 attachment

Fastening holes 87 Mounting bolts

Fasteners 89 O-rings

Cylinder 91 O-rings

Wing 92 connection opening

Connection surface 93 front side

Basic body 94 carrier body

Retaining plates 95, 97 connection

Stiffening bar 96 Base plate

Mounting holes 98 Stiffening rib

Support bar 99, 101 Plug-in coupling

Receiving opening 100 recess

Radial projection 103 flow channel

Holding surface 105 pressure cylinder

Spacer sleeve section 107 channel section

Mounting flange 109 channel section

Main axis 111 outlet opening

Line through holes 113 connection opening

115 clamping surface

Claims

claims

A control housing (15) for a clutch actuator (13) within a clutch bell (1), the control housing (15) having a bearing pad (35) for a retention connection to the clutch actuator (13) and the control housing (15) in a final assembly position at least partially in the clutch bell (1), characterized in that a cover (21) fixes the control housing (15) at least in one degree of freedom relative to the clutch bell (1).

2. Control housing according to claim 1, characterized in that the cover (21) in the direction of the control housing (15) has at least one radial projection (49) which has a holding surface (51) for the at least one degree of freedom.

3. Control housing according to claim 2, characterized in that the holding surface (51) is designed as a clamping surface.

4. Control housing according to claim 1, characterized in that the cover (21) is designed diametrically to the connection surface (35).

5. Control housing according to claim 1, characterized in that the cover (21) has a spacer sleeve portion (53), starting from an end-side mounting flange (55).

6. Control housing according to claim 1, characterized in that the control unit (15) independently of the cover (23) has a separate closure lid (75).

7. Control housing according to claim 1, characterized in that the control housing (15) via a to the clutch actuator (13) separate support ring (23) is held to the clutch actuator (13).

8. Control housing according to claim 7, characterized in that the support ring (23) has a support surface (33) on which the connection surface (35) of the control housing (15) is fixed.

9. Control housing according to claim 8, characterized in that the control housing (15) has at least one receiving opening (47) for a supporting surface (33) angled support web (45).

10. Control housing according to claim 1, characterized in that line passage openings (59) of the control housing (15) summarized in a to a lateral surface (61) of the control housing (15) offset plane (63) are executed, wherein the lid (21) has a receptacle (65) for this level (63).

11. Control housing according to claim 10, characterized in that between the offset plane (63) and the receptacle (65) an annular seal (67) is arranged.

12. Control housing according to claim 10, characterized in that the cross section of the receptacle (65) is greater than a maximum cross-sectional area of a line coupling (71) in the mounting direction.

13. Control housing according to claim 1, characterized in that between the control housing (15) and the Kupplungsaktuator (13) a pressure medium line adapter (77) is arranged, which connects the control housing (15) with the Kupplungsaktuator (13).

14. Control housing according to claim 13, characterized in that the pressure medium line adapter (77) on the support ring (23) is attached.

15. Control housing according to claim 13, characterized in that the pressure medium line adapter (77) connects the control housing (15) with an axial end face (93) of the Kupplungsaktuators (13).

16. Control housing according to claim, characterized in that all with the control housing (15) in communication ports (95, 97) have the same radial orientation to the connection surface (35) of the control housing.