DE102016011870A1 - Joining device for placing a gasket on a gear housing cover, gasket for a gear housing cover of a motor vehicle, and methods of arranging such a gasket on a gear housing cover - Google Patents

Abstract

The invention relates to a joining device (1) for arranging a seal (3) on a gearbox housing cover (5) of a motor vehicle, comprising a base body (7), wherein the base body (7) has a cylinder recess (11) in a surface (9) , is arranged concentrically to the base body (7) along an axis through passage (13), wherein in the passage (13) relative to the base body (7) displaceable in the axial direction, cylindrically symmetrical support element (17) is guided the support element (17) at a finite distance from an end (19) of the support element (17) facing away from the passage (13) has an annular collar (21) with which the support element (17) is guided in the recess (11) the annular collar (21) on its side facing away from the passage (13) has a first support surface (23) for a seal (3), wherein the support element (17) between the annular collar (21) and the Durchführun g (13) facing away from the end (19) has a circumferential support surface (25) which is adapted to bear a lip (27) of the seal (3), and wherein the base body (7) on the recess (11) having surface (9) has a second bearing surface (29) for the seal (3). Furthermore, the invention relates to a seal (3) and a method for arranging the seal (3) on a gear housing cover (5).

Description

The invention relates to a joining device for arranging a seal on a gear housing cover of a motor vehicle, a seal for a gear housing cover of a motor vehicle, and a method for arranging a seal on a gear housing cover of a motor vehicle.

From the German patent application DE 10 2008 043 303 A1 goes out a gear with an external gear portion and with a cam portion. It is envisaged that at least one molded annular seal made of elastomeric material, in particular a rubber compound, is provided on the gear wheel. Such a sealing arrangement can be improved on its own, but is particularly used in motor vehicles for adjusting windows, sunroofs and Sitzverstellmotoren. For sealing gear housings, in particular in the region of a gear housing cover, for traction transmissions, in particular manual transmissions, automatic transmissions, dual-clutch transmissions or the like, such sealing arrangements are not suitable. In particular, in such applications there is room for improvement with regard to a damage-free and stable arrangement of a seal on a gear housing cover and the tightness of such a seal assembly.

The invention has for its object to provide a joining device, a seal and a method for arranging such a seal on a gear housing cover of a motor vehicle, wherein said disadvantages do not occur.

The object is achieved by the objects of the independent claims are created. Advantageous embodiments emerge from the subclaims.

The object is achieved, in particular, by providing a joining device for arranging a seal on a gear housing cover of a motor vehicle, which has a base body, wherein the base body has a recess in the shape of a cylinder recess, concentrically surrounding a passage penetrating the base body along an axis. In the implementation of a relatively displaceable relative to the base body in the axial direction, cylindrically symmetrical support element is guided, wherein the support member in a finite distance, that is, in particular at a non-zero distance from an end facing away from the implementation of the support member has a collar, with the it is guided in the recess. The annular collar has on its side facing away from the implementation of a first bearing surface for a seal. The support member has between the annular collar and the end remote from the implementation of the support member on a peripheral support surface, said circumferential support surface is adapted to abut a lip of the seal. The base body has on the recess surface having a second contact surface for the seal. The joining device is in particular designed to allow the fullest possible, stable installation of the seal before and during the joining process, so that the seal is not damaged when joining with the gear housing cover. In particular, a lip pointing axially in the pressing-in direction of the seal can rest stably on the circumferential support surface during the joining process, wherein it is preferably guided by the circumferential support surface. As a result, the risk of folding over the lip during joining is significantly reduced, if not completely eliminated. Thus, the seal can be joined without damage, in particular in the region of the lip, wherein a preferably annular disc-shaped sealing body of the seal on the first bearing surface and the second bearing surface can rest, in particular the second bearing surface can be used during a relative displacement of the body relative to the support member to add the seal, in particular to press in its mounting position on the gear housing cover.

The main body is preferably cylindrically symmetrical, in particular circular cylindrical. It has in the particular frontal surface on a cylindrical recess, wherein the recess has a cylindrical symmetry, in particular circular cylindrical designed, and at the same time trough-shaped, wherein the recess as a whole does not reach through the body, but rather has a bottom. Preferably, the cylinder trough-shaped recess is arranged concentrically to the cylindrically symmetrical base body at this. The surface which has the cylinder-shaped recess, is formed annular due to the cylinder-shaped recess. The implementation is arranged concentrically to the cylinder-shaped recess and passes through the implementation completely, in which case it also engages in particular through the bottom of the cylinder-shaped recess. In this case, after all of the base body has an outer diameter, in particular a first, largest diameter, wherein the recess in the cylindrical recess has a second, smaller diameter, wherein the passage has a third, smallest diameter.

The fact that the support element is displaceable in the axial direction means, in particular, that it can be displaced along the axis along which the bushing passes through the base body.

The surface of the base body, which has the recess, forms at least the second contact surface, so that the second contact surface is in particular annular.

According to one embodiment of the invention it is provided that the support element is resiliently mounted in the implementation. This allows in particular a relative displacement of the base body and the support member to each other against a biasing force, wherein following the joining process, the support member and the base body due to the spring force or bias can return to their original state without this requires further action. The joining device is in this case particularly very easy to apply, with very particular manual operation or actuation by means of a simple manipulator or in a simple manner by a robot is eligible. Alternatively or additionally, it is possible that the support element relative to the base body - or the base body relative to the support element - is pneumatically, hydraulically, electrically or otherwise actively displaced. This represents in particular a possible embodiment when the joining device is actuated by means of a manipulator or by a robot. In this case, a particularly reproducible and more accurate relative displacement of the support member and the base body to each other can be effected.

According to one embodiment of the invention it is provided that the support element has a central bore for receiving a transmission shaft end. In particular, the support element is preferably designed like a sleeve. It thus has with the central bore on a cavity in which a transmission shaft end of a transmission shaft during the joining process can be added. This makes it possible to thread the joining device on the transmission shaft end and from there - in the axial direction - to press the seal on the gear housing cover.

According to one embodiment of the invention, it is provided that the support element has a stop for a transmission shaft collar at its end remote from the end of the implementation. The stop is preferably designed as an annular border of the central bore. The stop makes it possible to arrange the support element in a defined manner, in particular in a defined axial position, relative to the transmission shaft end, this axial position being predetermined by the stop on the one hand and the transmission shaft collar on the other hand.

The object is also achieved by providing a seal for a gear housing cover of a motor vehicle, which has an annular disc-shaped sealing body. On the sealing body, an inner lip is arranged, which surrounds a central passage opening for a transmission shaft - seen in the circumferential direction in particular completely. This lip is intended to engage around the gear shaft in the assembled state of the seal and to abut tightly against an outer peripheral surface of the gear shaft. In particular, the lip is axially from the sealing body, wherein the axial direction is determined here by the axis of symmetry of the annular disc-shaped sealing body and the central passage opening. On an outer periphery of the seal body, an axially projecting collar is arranged. This collar is designed as intended to intervene in the intended assembled state in an annular groove of the gear housing cover. By means of the seal, a passage for a transmission shaft to a transmission housing can be completely sealed, wherein the lip allows a radially inner seal in the transmission shaft and the collar a radially outer seal in the region of the annular groove. The lip and the collar are axially projecting beyond the sealing body in the same direction, namely in particular in a press-in direction, that is to say in a direction in which the seal is intended to be pressed into the gearbox housing cover. The joining device described above allows in particular a pressing of the seal in the gear housing cover, without causing the axially projecting lip is folded, whereby a damage-free mounting of the seal is possible.

The object is also achieved by providing a method for arranging a seal on a gear housing cover of a motor vehicle, comprising the following steps: A seal according to one of the preceding embodiments is arranged on a joining device according to one of the preceding embodiments such that the lip adjoins the circumferential support surface is present, and that the sealing body rests against the first contact surface and at the same time on the second contact surface, wherein the lip and the collar facing away from the implementation of the body of the joining device in the axial direction. The support member is slipped onto a free end of a gear shaft protruding from a gear housing cover, the free end of the gear shaft being received in the support member. The support element is thus threaded onto the free end of the transmission shaft, so to speak. The base body is displaced relative to the support element in the direction of the transmission housing cover, ie in the axial direction, and the collar of the seal is pressed into an annular groove of the transmission housing cover. In connection with the method arise in particular the advantages that have already been explained in connection with the joining device on the one hand and the seal on the other hand. In particular, the method allows a damage-free arrangement of the seal on the transmission housing cover, without the inner lip is folded over and thus damaged. At the same time an axial-linear guide and a bearing-oriented pressing of the sealing ring are made possible by means of the joining device. Overall, the seal can be reliably attached to the gear housing cover with little expenditure of time, which at the same time is inexpensive and effective.

After the gasket has been pressed into the gear housing cover, the joining device is displaced away from the gear housing cover, the base body and the support element being displaced relative to one another back to their starting position, preferably due to a spring bias, which is provided in particular due to the preferably spring-mounted support element.

According to one embodiment of the invention it is provided that the support element is pushed onto the free end of the transmission shaft until the transmission shaft strikes with a transmission shaft collar on the stop of the support member. In this way, the joining device can be arranged in a defined axial position on the transmission shaft and thus at the same time on the transmission housing and the transmission housing cover.

According to one embodiment of the invention, it is provided that the joining device is operated directly manually, that is to say in particular by hand, by means of a manipulator or by a robot. The joining device is thus particularly adapted for manual assembly or for automated assembly, wherein the method is preferably carried out by hand or automatically.

It shows in particular the following: In the context of the method, the seal is preferably first placed on the support element until it rests against the respective supports. The collar, as well as the sealing lip formed on the annular disc hole edge of the seal, point axially away from the main body of the joining device. The joining device is then threaded onto the transmission shaft end, with the central bore of the support element receiving the transmission shaft end. The support member finally strikes with its stop on the transmission shaft collar, after which the base body moves relative to the support member in the axial direction upon further axial movement in the direction of the gear housing cover, in particular in a further downward movement. Here, the seal is pushed by the support member and applied on the one hand with the lip of this led to the shaft, wherein the lip is guided in particular by the circumferential support surface, and on the other hand, the seal is pressed with the collar in the annular groove of the transmission housing cover. Due to the tight guide on the circumferential support surface, the lip is not folded and thus not damaged. After the operation, the joining device is easily removed again, with the support element - in particular elastically - returns to its original position.

The invention will be explained in more detail below with reference to the drawing.

Showing:

1 a schematic representation of an embodiment of a joining device for arranging a seal on a gear housing cover of a motor vehicle and

2 a representation of another embodiment of the joining device with an embodiment of a seal arranged thereon, and a gear housing cover.

1 shows a schematic representation of an embodiment of a joining device 1 to arrange an in 2 illustrated seal 3 at a likewise in 2 illustrated gear housing cover 5 a motor vehicle, not shown, wherein - coming back on 1 - The joining device 1 a basic body 7 has, which is preferably cylindrical, wherein the base body 7 in a surface 9 a cylinder trough-shaped recess 11 has, to the concentric one the main body 7 thorough implementation 13 is arranged, which the body along a in 1 vertical axis passes through. The recess 11 even reaches through the body 7 not completely, but rather has a floor 15 in turn, the implementation 13 be upheld. In particular, the implementation indicates 13 a smaller diameter than the recess 11 ,

In the implementation 13 is a relative to the main body 7 in the axial direction - in 1 in the vertical direction - displaceable, cylindrically symmetrical support element 17 guided. The support element 17 points at a finite distance from one of the implementation 13 opposite end 19 of the support element 17 a ring collar 21 on top of it in the recess 11 is guided. In this case, the annular collar 21 on its implementation 13 off and the end 19 facing side a first bearing surface 23 for the seal 3 on. The support element points between the annular collar 21 and the end 19 a circumferential support surface 25 on, which is set up to create a turn in 2 illustrated lip 27 the seal 3 ,

The main body 7 indicates at the the recess 11 having surface 9 a second contact surface 29 for the seal 3 on. In particular, the annular surface forms 9 the then also annular second bearing surface 29 , Also the first contact surface 23 on the ring collar 21 is annular.

The support element 17 is in the recess 11 preferably spring-mounted, it being possible, for example, that directly in the recess 11 a corresponding spring element is arranged, which, for example, on the ground 15 on the one hand and the ring collar 21 on whose the end 19 opposite side supported on the other. But it is also possible that such a spring element between a on the support element 17 provided or with the support element 17 connected plant block 31 and the body 7 is arranged.

However, an embodiment is preferred in which the spring element in the recess 11 is arranged.

Alternatively or additionally, the attachment block 31 preferably a stop surface 33 on, in the unloaded, non-actuated state of the joining device 1 due to the bias of the spring element on the body 7 strikes, in which case in a defined manner, the first bearing surface 23 and the second bearing surface 29 aligned with each other so that the seal 3 full surface on the bearing surfaces 23 . 29 can be present. In 1 is a deflected from this rest position functional position of the joining device 1 it is clear that the annular collar 21 with the support element 17 against the bias in the recess 11 can be moved into it, in which case the second bearing surface 29 no longer with the first contact surface 23 is aligned, but rather - seen in the axial direction - over this, in this way in particular the seal 3 with the gearbox housing cover 5 can be joined. This will be explained in more detail below.

In any case, the seal 3 in the joining process by the joining device 1 optimally supported, in particular the lip 27 securely on the circumferential support surface 25 is applied and guided by them, so that they can not fold during joining, whereby the seal 3 undamaged is added.

The support element 17 has a central hole 35 which is adapted to receive a transmission shaft end 37 , which in turn 2 is shown. Coming back to 1 again shows that the support element 17 frontally at the end 19 a stop 39 for a turn in 2 illustrated transmission shaft collar 41 having.

2 shows a representation of the embodiment of the joining device 1 according to 1 with an embodiment of a seal 3 and the transmission housing cover 5 , Identical and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description. The seal 3 in particular has an annular disk-shaped sealing body 43 on, on which the lip 27 as inner, a central passage opening for the transmission shaft 38 encompassing lip is arranged. On an outer circumference of the seal body 43 is an axially protruding collar 45 arranged, which projects axially in the same direction as the lip 27 , in 2 namely, up, with the collar 45 in particular, is set up in an annular groove 47 of the gear housing cover 5 to be pressed in.

To arrange the seal 3 on the gearbox cover 5 this is now first on the joining device 1 arranged so that the lip 27 on the circumferential support surface 25 of the support element 17 is applied, wherein the sealing body 43 both at the first contact surface 23 as well as at the flush with this second bearing surface 29 is applied. The lip 27 and the collar 45 then point - seen in the axial direction - of the implementation 13 the joining device 1 path. Subsequently, the support element 17 on the free gear shaft end 37 plugged or threaded, including the joining device 1 together with the seal 3 in comparison to the illustration according to 2 rotated by 180 °. The transmission shaft end 37 is doing in the central hole 35 of the support element 17 added. The support element 17 is doing so far on the transmission shaft end 37 postponed that the transmission shaft collar 41 at the stop 39 strikes.

Will the joining device 1 continue in the axial direction on the gear housing cover 5 to shift, becomes the support element 17 through the stop 39 on the transmission shaft collar 41 prevented from further axial displacement, so rather only the main body 7 relative to the support element 17 continue down to the gearbox cover 5 to be relocated. This is the collar 45 through the second bearing surface 29 in the ring groove 47 pressed. At the same time, the lip becomes 27 from the circumferential support surface 25 down and on the gear shaft 38 pushed, so that it then fits tightly against this. However, the lip will 27 safely guided by the circumferential support surface during the press-in process so that it can not fold down. In particular, this is a damage-free joining of the seal 3 on the gearbox cover 5 possible.

The actuation of the joining device 1 is preferably carried out directly manually, preferably hand-guided, by means of a manipulator, or by a robot.

Overall, it turns out that with the joining device proposed here 1 , the seal 3 and the method a very good seal of a gear housing cover 5 can be achieved, with the seal 3 cost-effective, reliable and effective on the gear housing cover 5 can be arranged.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008043303 A1 [0002]

Claims (8)

Joining device ( 1 ) for placing a seal ( 3 ) on a transmission housing cover ( 5 ) of a motor vehicle, having - a basic body ( 7 ), where - the basic body ( 7 ) in a surface ( 9 ) a cylinder trough-shaped recess ( 11 ), concentrically to the base body ( 7 ) along an axis sweeping implementation ( 13 ), wherein - in the implementation ( 13 ) a relative to the main body ( 7 ) displaceable in the axial direction, cylindrically symmetrical support element ( 17 ), wherein - the supporting element ( 17 ) at a finite distance from one of the execution ( 13 ) facing away from the end ( 19 ) of the support element ( 17 ) an annular collar ( 21 ), with which the support element ( 17 ) in the recess ( 11 ), wherein - the annular collar ( 21 ) on its implementation ( 13 ) facing away from a first bearing surface ( 23 ) for a seal ( 3 ), wherein - the support element ( 17 ) between the collar ( 21 ) and the implementation ( 13 ) facing away from the end ( 19 ) a circumferential support surface ( 25 ) which is adapted to abut a lip ( 27 ) of the seal ( 3 ), and where - the basic body ( 7 ) at the recess ( 11 ) surface ( 9 ) a second bearing surface ( 29 ) for the seal ( 3 ) having. Joining device ( 1 ) according to claim 1, characterized in that the supporting element ( 17 ) in the recess ( 11 ) is spring-mounted. Joining device ( 1 ) according to one of the preceding claims, characterized in that the supporting element ( 17 ) a central bore ( 35 ) for receiving a transmission shaft end ( 37 ) having. Joining device ( 1 ) according to one of the preceding claims, characterized in that the supporting element ( 17 ) at the front end of its execution ( 13 ) facing away from the end ( 19 ) a stop ( 39 ) for a transmission shaft collar ( 41 ) having. Poetry ( 3 ) for a transmission housing cover ( 5 ) of a motor vehicle, with - an annular disc-shaped sealing body ( 43 ), wherein - on the sealing body ( 43 ) an inner, a central passage opening for a transmission shaft ( 38 ) encompassing lip ( 27 ), and wherein - on an outer circumference of the sealing body ( 43 ) an axially projecting collar ( 45 ) is arranged. Method for arranging a seal ( 3 ) on a transmission housing cover ( 5 ) of a motor vehicle, comprising the following steps: - arranging a seal ( 3 ) according to claim 5 on a joining device ( 1 ) according to one of claims 1 to 4 such that the lip ( 27 ) on the circumferential support surface ( 25 ) is applied, and that the sealing body ( 43 ) at the first contact surface ( 23 ) and at the second contact surface ( 29 ), wherein the lip ( 27 ) and the collar ( 45 ) in the axial direction of the bushing ( 13 ) of the basic body ( 7 ) point away; - attaching the support element ( 17 ) on a free end of a transmission housing cover ( 5 ) projecting gear shaft ( 38 ), wherein the free end in the support element ( 17 ) is recorded; - shifting the basic body ( 7 ) relative to the support element ( 17 ) in the direction of the gear housing cover ( 5 ), and - pressing in the collar ( 45 ) in an annular groove ( 47 ) of the transmission housing cover ( 5 ). Method according to claim 6, characterized in that the supporting element ( 17 ) on the free end of the transmission shaft ( 38 ) is pushed until the transmission shaft ( 38 ) with a transmission shaft collar ( 41 ) at the stop ( 39 ) strikes. Method according to one of claims 6 and 7, characterized in that the joining device ( 1 ) is operated directly manually, by means of a manipulator, or by a robot.

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