AT509996B1 - METHOD FOR PRODUCING A JOINT CONNECTION AND SWITCHING DEVICE FOR A GEAR CHANGING GEARBOX - Google Patents

Description

Austrian Patent Office AT509 996B1 2012-01-15

Description: [0001] The invention relates to a method for producing a joint connection between a functional element and a carrier element, as described in the preamble of claim 1.

In gear change transmissions switching devices are provided for the axial displacement of a sliding sleeve. Such switching devices are known, for example, as a shift fork for direct shift transmission or dual-clutch transmission of a motor vehicle. The shift fork has a rail-like or tubular base element and with this connected by a fabric-liquid joint connection switching cheeks and attached to the base member guide elements, by means of which the shift fork is mounted in the housing of the change-speed gearbox. The shift cheeks engage with driver elements in a circumferential groove of the sliding sleeve, wherein a movement of the shift cheek is transmitted to the sliding sleeve relative to a housing.

Such switching elements are known for example from DE 100 45 506 A1 and DE 20 2009 017 006 U1.

From DE 101 23 962 A1 discloses a switching device is known, which has a shift rail and a slid on one of its ends, one-piece guide element, which is provided with a blind hole-like receiving opening and with a crossing this bore. The shift rail also has a bore, so that in the mounting position of the guide element a locking pin can be inserted through the hole.

According to the statements in DE 20 2005 014 599 U1, DE 10 2006 032 782 A1 and DE 10 2007 061 021 A1, the shift rail is equipped with multi-part guide elements, which each consist of a first guide element part and a second guide element part, wherein the Guide element parts mounted around the transmission shift element around each other and / or are connected to the transmission shift element. The guide element parts are made of a thermoplastic material and welded together by friction, vibration or ultrasonic welding to the guide element. The gear shift element has formations, engage in the complementarily shaped form-fitting parts of the guide element parts, so that the guide member is secured against axial displacement.

According to another embodiment, at least one sleeve made of plastic as a guide element is sprayed onto the switching element, as disclosed in DE 102 02 651 A1.

The object of the invention is to provide a method for producing a joint connection, wherein the functional element can be produced inexpensively and fixed in a simple manner positionally accurate on the support element.

The object of the invention is achieved by the measures in claim 1. It is advantageous that a functional element can be produced inexpensively as a mass product independently of the carrier element in a manufacturing process and attached using the auxiliary tool at an arbitrary longitudinal position on the support element and secured in exact mounting position. The auxiliary tool limits on at least one side of the joint and forms the functional element during the thermal joining process in a section such that the functional element and the support member are firmly and permanently connected to each other. The functional element is preferably made entirely of plastic and is produced inexpensively by means of original molding techniques known from the prior art, for example by injection molding as a mass product.

According to the measures according to claims 2 and 3 is formed by the thermal joining between the functional and support member a positive connection, in particular a flanged seam, so that the functional element is securely fixed even in a continuous operation. Also, contrary to the prior art, in which the functional element and the carrier element are joined together by welding, a pretreatment, such as cleaning, drying and / or tempering of the carrier element omitted. Likewise, a different material pairing between the functional and carrier element (plastic-metal) has no effect on the quality of the joint connection.

Another advantage is the measure of claim 4, according to which an additional material area of plastic is provided on the attachment portion, which is at least partially melted during joining.

Is pushed according to the measure of claim 5, the functional element under the action of force on the support member, an exact centric guidance between the functional and support member is achieved.

If the functional element and the carrier element are joined together during their relative movement, as described in claim 6, the production time required for the production of the joint connection between the functional element and the carrier element can be significantly reduced and thereby the manufacturing costs are reduced. The functional element and the carrier element can be joined together in the direction of a single movement axis, which allows a reliable (robust) joining process and the use of simple joining and positioning devices.

An advantageous feature of the invention is described in claim 7, after which a bead-like joint seam is produced, which can withstand high loads.

The measures according to claim 8 allow the reliable production of the bead-like joint seam. In the working position, the auxiliary tool with the mold cavity is preferably positioned with a first mold wall coaxial with the joint and with a second mold wall radially to the joint, so that the mold walls and a boundary surface of the joint or depression limit a filling space for receiving the molten plastic material.

The invention further relates to a switching device for a change-speed gearbox, as described in the preamble of claim 9.

The US 6,164,151 A discloses a generic switching device comprising a tubular base member and a connected thereto via a cohesive joint connection, one-piece body for axial displacement of a sliding sleeve. The main body forms switching cheeks and a concave-shaped mounting portion connecting them to one another. Independent positioning of the shift cheeks is not possible. In the known switching device so post-processing is unavoidable after the joining process between the base member and the body when the usual required manufacturing tolerances are to be met.

The invention has for its object to provide a switching device that allows easy production taking into account the tightest manufacturing tolerances.

The object of the invention is solved by the features of claim 9. It is advantageous that compared to such switching devices known from the prior art, in which the main body is made in one piece, the shift cheeks can be positioned independently relative to the base member. By this positioning possibility manufacturing inaccuracies of the components to be joined together can be compensated. A post-processing of the switching device after the joining process, for example, an adjustment of the switching cheeks relative to the base member is not required. Sohin now switching devices can be produced with very high manufacturing accuracy. Also, the design freedom is significantly increased when the body is made of several individual shift cheeks. The shift cheeks can also be made due to the simpler shape shape with high dimensional and dimensional accuracy. Thus, the shift cheeks can be made very inexpensive and the technical requirements for the tools for the production of the shift cheeks are kept low.

Another advantage is the embodiment according to claim 10, since by the forming, in particular a material compression, at least a partial section on a side surface of the Austrian Patent Office AT509 996B1 2012-01-15

Assembly section shape deviations, in particular form deviations, such as bumps, waviness and the like., And / or a surface roughness, such as grooves, grooves and the like., Can be significantly compensated at the joining surface. Since the forming over larger surface sections can be done with tools and simple shape geometry, the wear on the tool for the production of the shift cheek (s) can be significantly reduced and the life of the tool can be optimized. In addition, the quality of the joint connection can be improved. According to an advantageous embodiment, the shift cheek and the base member made of a metallic material, in particular steel sheet, and formed by a non-cutting punching and forming process, in particular cold forming, from a thin sheet metal stamped and formed part. The shift cheek can also form a plurality of material deformations (embossments) produced by forming, in particular material compression, in separate sections on a side surface of the mounting section. As a result, a plurality of mutually separate joining sections having an improved joining surface can be produced in the joining area.

Of course, it is also possible that the mounting portion and the base member at their side facing away from the joining surfaces side surfaces each form at least one formed by forming, in particular a material compression, material deformation, the material deformations of the components face each other. Thereby, the mutual contact of the components in the opposite surface portions of the material deformations can be improved.

According to the embodiment of claim 11 is formed between the base and guide element a positive connection, so that the guide element is securely fixed even in a continuous operation.

Is the base member equipped with a connecting device, as described in claim 12, a simple coupling between a bearing mounted in the gearbox actuator for switching movement of the switching device and the base member is possible.

According to claim 13, the tubular base member is provided on the underside along a plane of symmetry of the base body with at least one passage. Thus, the sealing of the open ends of the base member is obsolete. The optionally entering via the open ends in the base member oil is returned via the passage in the gear housing, so that no change in the inertia of the base member ein- occurs. Thus, the switching device is ideally suited for use in dual-clutch transmissions of a motor vehicle, in which the switching device is moved via an electrically, mechanically or electromechanically controllable actuator.

The invention further relates to a switching device for a change-speed gearbox, as described in the preamble of claim 14.

DE 10 2008 036 190 A1 discloses a switching device comprising a fork-shaped base body for axial displacement of a sliding sleeve, which forms a receiving portion with an opening and with a guide element (shoe) is provided. The base body has a collar produced by deformation and surrounding the opening, which forms a width which is smaller in relation to the width of the receiving portion and opposing guide surfaces. The guide element can be injection-molded on the main body in the receiving section. The injection molding of the guide element requires a high machine cost and is also an automation of the joining process between the body and the guide element possible only with a high machine and cost.

A guide element for a switching device is known from DE 10 2007 009 120 A1, which forms a plastic body made in one piece by prototyping and having at a base vertically projecting legs and between the legs a first plug-in element. The outer contour of the first plug-in element corresponds in a form-fitting manner to an inner contour of an elongated hole provided in a receiving section for the guide element 3/27 Austrian Patent Office AT509 996 B1 2012-01-15. On the legs project in each case second plug-in elements, which are designed rod-shaped. The receiving portion further has funnel-shaped through holes into which the second plug-in elements are insertable. The guide element is attached to the receiving portion of the shift cheeks, in which this initially inserted via the plug-in elements in the slot and the through holes and then the free end of the second plug-in elements are deformed by heat input by means of ultrasound, so that the through hole filled with the material of the supernatant and the sheet metal section is engaged behind in the through hole. This known joint connection requires a lot of effort for the production of the guide element with different plug-in elements and the receiving portions with different openings. Thus, the production of the joint connection between the guide member and the receiving portion is expensive.

From DE 10 2007 034 571 A1 a guide element for a switching device is known, which has opposing guide walls, a sole and a protruding between the guide walls on the sole pin-like attachment portion.

The invention has for its object to provide a switching device that can be produced inexpensively and a simple assembly and joining process between the body and the guide element allowed.

The object of the invention is solved by the features of claim 14. It is advantageous that the fastening portion serves on the one hand the positioning of the guide element on the base body and on the other hand the production of the joint connection. The guide element is held exclusively on the attachment portion on the base body and anchored thereto. Thereby, the receiving portion can be easily designed. The receiving section is made by forming, serves as a stiffener for the shift cheek and also prevents the rotation of the guide element about its own axis.

By the embodiment according to claim 15, an even higher rigidity is achieved for the shift cheek.

According to the measures according to claims 16 and 17 is formed by the thermal joining between the mounting portion and the holding receptacle a positive connection, in particular a flanged seam, so that the guide element is securely fixed even in continuous operation. As such, the fastening section comprises a material region which can be melted by the heat input and which is formed on the projecting end of the fastening section and is suitable for producing the joint connection between the guide element and the retaining receptacle to be melted by heat input. Also, contrary to the prior art, in which the fastening portion and the holding receptacle are joined together by welding, a pretreatment, such as the cleaning, drying and / or tempering of the switching cheek omitted. Likewise, a different material pairing between the attachment portion and the holding receptacle (plastic-metal) has no effect on the quality of the joint connection.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

In a highly schematically simplified representation: [0033] FIG. 1 shows a perspective view of a switching device according to the invention; Fig. 2, the switching device of Figure 1 without guide elements in Stirnan view. Fig. 3 shows the switching device of Figure 1 without guide elements in perspekti vischer view. FIG. 4 shows a guide element (sliding block) for a shift cheek in a perspective view; FIG. 27.4

Austrian Patent Office Fig. 5 Figure 6 shows the guide element (slide shoe) in the mounted state on the shift cheek, cut along the lines V-V in Fig. 1; the guide element (shoe) in the assembled state on the shift cheek, cut in accordance with the lines VI - VI in Fig. 1; a connecting device for a gear actuator piston in longitudinal section; 8 shows a guide element for mounting the switching device in one

Housing, in perspective view; FIG. 9 shows the guide element according to FIG. 8 in longitudinal section; FIG. 10abis10d the successive process steps for producing a joint connection between a guide element and a base element.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals and the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis transferred to like parts with the same reference numerals or identical component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position.

1 to 3, a switching device 1 of a switching system, not shown, for a motor vehicle gearbox is shown. The switching system of a motor vehicle gearbox has a plurality of switching devices for switching of different gear ratios.

The switching device 1 for the circuit at least one gear stage of a change-speed gearbox comprises a base member 2, a base body 3 for transmitting a switching movement to a sliding sleeve, not shown in the direction of double arrow (Figure 1), guide elements 4, 5 and a connecting device 6 for a gear actuator piston, not shown. The gear actuator piston forms an actuator by means of which the switching device 1 can perform a switching movement in the axial direction. The switching device 1 is mounted by means of the guide elements 4, 5 in a transmission housing. The base element 2 is manufactured separately from the main body 3. The guide elements 4, 5 form functional elements and the base element 2 forms a carrier element.

The base element 2 is an open or closed profile body. Preferably, the profile body is formed over a longitudinal section or over the entire length by a self-contained tubular profile with a round, oval or polygonal cross-section. According to a first embodiment, the tube profile in a chipless forming process, in particular cold forming, such as bending / pressing, made of a flat sheet steel section in one piece and its opposite longitudinal edges in a parting plane via a cohesive joint, in particular by beam welding, such as laser welding or electron beam welding produced Joined, joined together. On the other hand, it is also possible according to a second embodiment, that the tube profile is formed by a seamless drawn tube. The wall thickness of the base element 2 is at most 6 mm, preferably between 1 mm and 3 mm, for example between 1.5 mm and 2.5 mm. On the other hand, the base element 2 can also be formed by solid material.

The main body 3 comprises according to this embodiment in a plane perpendicular to the switching axis 7 transverse plane a first shift cheek 8a, a second shift cheek 8b and optionally a third shift cheek 8c. The first shift cheek 8a and second shift cheek 8b include between them a shift jaw, within which the shift sleeve, not shown, is partially received. At the projecting ends of the shift cheeks 8a, 8b, 8c guide elements 9a, 9b, 9c, so-called sliding shoes are fastened, which are for engagement with the 5/27 Austrian Patent Office AT509 996 B1 2012-01-15

Sliding sleeve serve.

The switching cheeks 8a, 8b each have a mounting portion 10a, 10b, a receiving portion 11a, 11b for the guide member 9a, 9b and a connecting portion 12a, 12b connecting them together. The inclined mutually extending connecting portions 12a, 12b of the switching cheeks 8a, 8b extend from the mounting portion 10a, 10b in the direction of the receiving portion 11a, 11b to a maximum width dimension between the receiving portions 11a, 11b. The mounting portion 10a, 10b of the switching cheeks 8a, 8b is concave and forms a base element 2 facing, concave joining surface 13a, 13b. The receiving portions 11a, 11b of the switching cheeks 8a, 8b are parallel to each other and parallel to a longitudinal plane. The switching cheeks 8a, 8b form in the direction of their longitudinal extent between the mounting portion 10a, 10b and receiving portion 11a, 11b an approximately rectangular shaped cross-sectional profile with over the longitudinal extent of changing cross-sectional dimensions.

The switching cheek 8c is disposed between the switching cheeks 11a, 11b and has a mounting portion 10c and a receiving portion 11c for the guide member 9c. The mounting portion 10c forms a joining element 13c facing the base element 2.

The switching cheeks 8a, 8b, 8c are made separately from one another and each formed by a thin sheet formed without cutting punched and / or formed part with approximately constant wall thickness. The wall thickness of the switch cheeks 8a, 8b, 8c, which are preferably made of thin sheet steel, is between 2 mm and 6 mm, for example 4 mm or 5 mm.

As schematically indicated by dashed lines in FIGS. 2 and 3, according to one embodiment it is also possible for the switching cheeks 8a, 8b to be disposed at their mounting portions 10a, 10b on a side surface opposite the joining surface 13a, 13b, with at least one respective face formed by deformation, in particular cold forming embossing 15a, 15b (plastic material deformation) are provided. The embossment 15a, 15b lies opposite a joining region formed by the overlapping, overlapping surface sections of the base element 2 and the switching cheeks 8a, 8b and may extend over the length and over part of the width of the joining region. If a plurality of embossments 15a, 15b are provided for each mounting section 10a, 10b, they extend in each case in the opposite edge regions of the mounting section 10a, 10b over the length and over part of the width of the joining region, as shown diagrammatically in dashed lines in the figures. On the other hand, it is also possible that the embossing 15a, 15b corresponds to the area dimension of the joining region, wherein the joining region is defined by the overlapping surface sections.

By embossing 15a, 15b can now be ensured that the joining surface 13a, 13b can be produced in the Umformvorrich tion by the material displacement associated with the embossing process with the highest manufacturing accuracy. If the switching cheeks 8a, 8b and the base element 2 are joined together in particular by beam welding without additional material, a joint gap in the joining region must not exceed a maximum width of 0.1 mm, otherwise the joint connection can not be produced with the required quality. By embossing 15a, 15b any bumps on the joining surface 13a, 13b can be compensated. This ensures that the joint gap in the joint area has a maximum width of 0.1 mm. Of course, the switching cheek 8c can also be provided with at least one embossing (plastic material deformation) produced by deformation, in particular cold forming, however, as is not shown.

As can be seen in particular in Figs. 2 and 3, the base body 3 at its side walls 8a, 8b in the receiving portions 11a, 11b each have a holding receptacle 16a, 16b. The holding receptacle 16a, 16b, which is arranged in an end region of the switching cheek 8a, 8b facing away from the base element 2, is produced integrally with the switching cheek 8a, 8b in a chipless forming process, in particular cold forming, such as embossing. According to the embodiment shown, the holding receptacle 16a, 16b is formed by an implementation produced integrally in a stamping and / or forming process at the receiving portion 11a, 6/27 Austrian Patent Office AT509 996B1 2012-01-1511b. A height 17 of the enforcement is approximately equal to or smaller than a wall thickness 18 of the side wall 8a, 8b in the receiving portion 11a, 11b. A width 19 of the enforcement is smaller than a width 20 of the side wall 8a, 8b in the receiving portion 11a, 11b. The holding receptacle 16a, 16b thus forms a protrusion 21a, 21b on an (inner) first side surface facing the base element 2 and a recess 22a, 22b on an (outer) second side surface facing away from the base element 2. The holding receptacle 16a, 16b forms in the longitudinal plane of the switching device 1 at mutually spaced mutually parallel first guide surfaces 23 and in the transverse plane of the switching device 1 at a mutual distance inclined to each other extending second guide surfaces 24. The second guide surfaces 24 extend starting from a boundary surface 25 in the direction of the first side surface of the switching cheeks 8a, 8b. The boundary surface 25 extends between the guide surfaces 23, 24 parallel to the side surfaces of the switching cheeks 8a, 8b. Further, the holding receptacle 16a, 16b or enforcement comprises an opening extending therethrough and with respect to the surface thereof in the cross-sectional area smaller opening 26. According to the embodiment shown, a diameter of the opening 26 is smaller than the width 19 of the holding receptacle 16a, 16b. The longitudinal axis of the opening 26 extends perpendicular to the boundary surface 25 and is formed as a bore.

As can be seen in the figures, the base element 2 forms on its peripheral surface, at least in sections, a joining surface 14. The base element 2 and the switching cheeks 8a, 8b, 8c are applied with their mutually facing joining surfaces 13a, 13b, 13c, 14 against each other and in joining regions formed by the juxtaposed, overlapping surface portions respectively via joining seams 28 produced by beam welding, in particular electron beam welding or laser welding firmly connected.

The joining seams 28 form a fluid joining connection. The described joint seams may alternatively be formed by adhesive or soldered seams to the welds.

A particularly economical production of the switching cheeks 8a, 8b can be realized if, for each switching cheeks 8a, 8b, a flat sheet metal strip, preferably endless from a coil, a punching and forming device, in particular a progressive compound, and is passed through them and progressively through stamping and forming stations. In this case, a plurality of blanks or blanks is punched out of the sheet metal strip in a stamping process and this in a forming process (bending, pressing, stamping, calibrating) in one or more successive forming step (s) with the mounting portion 10a, 10b, receiving portion 11a, 11b, connecting portion 12a, 12b, the joining surface 13a, 13b, the holding receptacle 16a, 16b and optionally the embossments 15a, 15b formed. The production of the switching cheeks 8a, 8b can be done almost free of cuts and processed in the functional areas, therefore in the mounting portion 10a, 10b or receiving portion 11a, 11b to the required dimensional and shape tolerance. The design of the switching cheeks 8a, 8b provides that this requires no mechanical reworking after performing all forming operations.

The switching cheek 8c can also be produced according to the described principle, for the switching cheek 8c, a flat sheet metal strip, preferably endless from a coil, a punching device, in particular a progressive tool, and is passed through this and progressively punching stations passes. In this case, the mounting portion 10c and the receiving portion 11c are punched out of the sheet metal strip in a stamping process in one or more successive work steps.

The structural design and the attachment of the guide elements 9a, 9b are described with reference to FIGS. 4 to 6.

The guide element 9a, 9b is made of plastic, in particular thermoplastic material, preferably in one piece by injection molding and is attached as a prefabricated component to the holding receptacle 16a, 16b. The guide element 9a, 9b at a distance forms opposite and parallel first side walls 29 and second side walls 30 connecting the same and connecting them to a sole 31. The side walls 29, 30 and the sole 31 delimit a receiving opening 32 which is dimensioned so that in it the holding receptacle 16a, 16b can be accommodated and the side walls 29, 30 enclose the holding receptacle 16a, 16b on the circumference. The guide element 9a, 9b preferably forms exclusively a fastening section 33 on the sole 31. This is formed for example by a hollow cylindrical shaft. The guide element 9a, 9b may alternatively be made of a composite material of metal and plastic, in which case at least the attachment portion 33 consists of plastic.

The first side walls 29 form on the one hand in the transverse plane of the guide element 9a, 9b with mutually spaced mutually facing and mutually parallel inner guide surfaces 34 and on the other hand remote from each other and parallel to each other outer guide surfaces 35. The outer guide surfaces 35 are for engagement with the (not shown) sliding sleeve. The second side walls 30 form in the longitudinal plane of the guide element 9a, 9b at a mutual distance from each other facing and inclined extending guide surfaces 36. The guide surfaces 36 extend starting from the sole 31 in the direction of the longitudinal extent of the attachment portion 33.

If the guide element 9a, 9b is mounted on the holding receptacle 16a, 16b, as can be seen in FIGS. 5 and 6, the fixing section 33 extends through the opening 26, the inner guide surfaces 34 are virtually "clearance-free". against the guide surfaces 23 and the guide surfaces 36 are based on the guide surfaces 24 from. Due to the inclined guide surfaces 24, 36, a self-centering of the guide element 9a, 9b on the holding receptacle 16a, 16b and thus in the transverse plane of the switching device 1 an exact positioning of the guide element 9a, 9b relative to the switching cheek 8a, 8b achieved. Accordingly, the opening 26 and / or the attachment portion 33 can be made with larger dimensional tolerances. It merely has to be ensured that the guide element 9a, 9b can be positioned in the radial direction to the longitudinal axis of the opening 26 relative to the holding receptacle 16a, 16b. In addition, the positioning of the guide element 9a, 9b on the holding receptacle 16a, 16b in the axial direction of the fastening section 33 can be achieved via the inclined guide surfaces 24, 36. An axial length of the attachment portion 33 is dimensioned so that its free end always protrudes from the opening 26 irrespective of the manufacturing tolerances of the guide element 9a, 9b and the holding receptacle 16a, 16b in order to enable a secure attachment of the guide element 9a, 9b.

After the guide element 9a, 9b and the holding receptacle 16a, 16b are fixed to one another via the guide surfaces 23, 34, an exact positioning of the guide element 9a, 9b relative to the switching cheek 8a, 8b is achieved even in the longitudinal plane of the switching device 1.

The guide element 9a, 9b and the holding receptacle 16a, 16b are connected to each other via a positive connection, so that a rotation of the guide element 9a, 9b relative to the switching cheek 8a, 8b can be excluded. The holding receptacle 16a, 16b made of metal, in particular sheet steel, acts as a reinforcement for the guide element 9a, 9b, which is preferably made of plastic. The guide element 9a, 9b can now transmit high switching forces, since this primarily serves the sliding guide with the sliding sleeve and not the force. Thus, the guide member 9a, 9b are formed thin-walled. The material requirement for the production of the guide element 9a, 9b is low and thus the production of the switching device 1 cost.

It is also advantageous that the guide element 9a, 9b can be made independently of the base body 3 and the already prefabricated guide element 9a, 9b is mounted and fixed to the holding receptacle 16a, 16b. As a result, in contrast to the methods known from the prior art, where the guide element 9a, 9b is injection-molded onto the switching cheek 8a, 8b, the manufacture of the switching device 1 is simplified.

In the following, the assembly and mounting of the guide element 9a, 9b described at the receiving portion 11a, 11b. [0067] The prefabricated guide element 9a, 9b is threaded into the opening 26 via the attachment section 33 and attached to the holding receptacle 16a, 16b. In this case, the guide element 9a, 9b and the holding receptacle 16a, 16b positioned on the guide surfaces 23, 24, 34, 36 to each other. The fastening section 33 has a material region 39 which can be melted or plastically deformed by heat input in a thermal joining process. The material region 39 is formed at the free end of the attachment portion 33. If the guide element 9a, 9b is mounted on the holding receptacle 16a, 16b, the material region 39 protrudes out of the opening 26 and this is plastically deformed at least in sections by the heat input. In this case, the recess 22a, 22b is partially filled with the plastic material and the receiving portion 11a, 11b in the recess 22a, 22b is engaged behind. After hardening of the molten plastic material, a joining seam 37 (flanged seam) is produced whose dimension is greater than the dimension of the opening 26, as shown in FIGS. 5 and 6.

Preferably, the guide element 9a, 9b is connected to the switching cheeks 8a, 8b by ultrasound bonding to the support receptacle 16a, 16b specially designed for this purpose.

In ultrasonic joining, the heat required for plasticizing is generated by the conversion of ultrasonic vibrations into mechanical vibrations and fed with a specific contact pressure via a sonotrode (not shown) to the guide element 9a, 9b to be joined. The guide element 9a, 9b made of plastic acts here as an energy source. The mechanical vibrations impinging on the guide element 9a, 9b are absorbed and reflected at the interface. Due to the molecular friction, heat is generated which causes the plastic to melt.

In order to keep the joining time as low as possible, so-called energy directors 38 are provided by means of which a targeted as well as concentrated energy input is achieved on the meltable by heat input material area 39. The energy director 38 is formed on the attachment portion 33. According to this exemplary embodiment, the energy directing device 38 is defined by acute-angle bordering surfaces (FIG. 4), the boundary surfaces ending in a body edge.

The ultrasonic joining offers the advantage that three-dimensional joint seams can be realized in short welding cycles, post-processing of the joint seams is not necessary and requires only a fraction of the energy in comparison to the other thermal joining methods known from the prior art.

Fig. 7 shows an enlarged portion of the base member 2 with the connecting device 6 for a gear actuator piston, not shown. The connecting device 6 comprises a plugged into the open end of the base member 2 and fixedly connected to this disc 40. The base member 2 and the disc 40 are fixedly connected to each other by welding, in particular electron beam welding or laser welding, produced by beam welding, in particular electron beam welding or laser welding. The joining seams 41 form a fluid joining connection. The described joint seams may alternatively be formed by adhesive or soldered seams to the welds.

The disc 40 forms a threaded portion 42, with which the gear actuator piston is connectable.

On the other hand, it is also possible that the connecting device 6 is produced in one piece with the base element 2 in a stamping and / or forming process.

As indicated in Fig. 3, the base member 2 may be provided in its wall with one or more passage (s) 43 for draining oil. The passage 43 is formed on the underside of the base element 2 in a centrally extending between the switching cheeks 8 a, 8 b in the direction of the switching axis 7 longitudinal plane of the switching device 1. According to the embodiment shown, the base element 2 is provided with three passages 43 each having a diameter of about 1 mm to 2 mm. The passages 43 are formed on the underside of the base element 2 in the longitudinal plane of the switching device 1 on the other side.

This setting 43 is provided in switching devices 1, which can be used in an automatic transmission or dual-clutch transmission of a motor vehicle. Such transmissions require a control with which a shift between the gear ratios is monitored. Thus, it is sometimes also necessary that the switching movement of the switching devices is monitored and executed via corresponding sensors and actuators, wherein the actuators are acted upon by control signals calculated by the control. To have a "vibration behavior" To avoid the scheme, disturbances are already turned off by the structural design of the switching devices from the outset.

Such a disturbance is when the base member 2 by a uncontrolled oil inlet via the open ends to the switching operations has a different mass inertia.

To eliminate this disadvantage, it is known from the prior art that the base element 2, which is designed as a tubular profile, is sealed at its open ends with sealing elements (oil), which is very expensive and extensive quality tests ( Leak testing) requires.

According to one embodiment of the invention, an alternative constructive solution to the sealing elements is proposed, which can be realized inexpensively and easily.

The 43 provided for this purpose allows now that the base member 2 does not have to be sealed at the open ends, but the over at least one of the open ends in the base member 2 entering oil is derived in the gear housing and thus no change in inertia occurs.

A particularly simple production of the switching device 1 can also be achieved if the joining device, in particular the laser beam or electron beam welding device, on the one hand for producing the joint seams 28, 41 and on the other hand for producing the passage 43 is used in an automated assembly plant. In order to produce the passage 43, the energy beam is directed by the joining device onto the base element 2 and the energy density is controlled such that the passage (s) 43 are cut out in the base element 2. A machining of the base element 2 for producing the passage (s) 43 is thus not required. The position of the adjustment (s) 43 is achieved exactly by controlling the actuator for the joining device.

Furthermore, the base element 2 forms in assembly areas 44 for the guide elements 4, 5 in each case a joint 45 produced in a preferably non-cutting or optionally machining production method. The joint 45 is formed by embodiment shown by a recess which is bounded by a boundary surface. The joint 45 may also form a plurality of recesses, which are distributed over a surface portion of the base member 2.

Thus, the recess of the joint 45 may be formed according to a first embodiment by a single circumferential over the circumference of the base member 2 groove which is bounded by a concave boundary surface and whose depth is a maximum of 3 mm, in particular between 0.5 mm and 2.5 mm, for example 2 mm. According to the embodiment shown, the depth is approximately half the wall thickness of the base element 2. A width of the groove is a maximum of 3 mm, in particular between 0.5 mm and 2.5 mm, for example 2 mm. The recess is preferably produced without cutting, for example by rolling.

Are provided according to a second embodiment over a surface portion of the base member 2 more recesses at the joint 45, these are formed by grooves or grooves, each bounded by a concave boundary surface and the depth is in each case a maximum of 2 mm, in particular between 0.1 mm and 1.5 mm, for example 0.2 mm. A width of the groove or groove is a maximum of 2 mm, in particular between 0.1 mm and 1 mm, for example 0.2 mm. The recesses are preferably produced without cutting, for example by rolling.

Although according to these embodiments, the recess (s) extends continuously over the entire circumference of the base member 2, it is equally well possible that at the joint 45 in the circumferential direction a plurality of separately produced groove-like depressions are formed, which each only over extend a peripheral portion.

According to these ranges of values, the plastic volume to be melted for producing the joining seam 70 can be plasticized within a short time with the described thermal joining method, so that the joint connection can be produced inexpensively.

According to a third embodiment, it is also possible that the joint 45 has a surface profile (boundary surface) over a surface section on the surface of the base element 2. The surface profile is formed by over the surface portion regularly or irregularly distributed, recurring profile peaks and profile valleys. The profile valleys each form a depression, which can be separated from one another by the profile tips or can also be connected to one another. The surface profile is produced by forming the material or removing the material in the area section. For example, the surface profile is a toothing with parallel, oblique or perpendicular to the longitudinal axis of the base member 2 extending teeth, the tooth flanks of adjacent teeth limit profile valleys. A tooth height or depth of the profile valleys is a maximum of 2 mm, in particular between 0.1 mm and 1 mm, for example 0.2 mm. A maximum gap width (width) between the tooth flanks of adjacent teeth is a maximum of 20 mm, in particular between 0.1 mm and 10 mm, for example 1 mm. On the other hand, the surface profile may be formed solely by the roughness of the surface portion on the surface of the base member 2. The average roughness Ra is greater than 50 pm, in particular between 70 pm and 100 pm. If the surface profile is already realized by the material surface with which the base element 2 is produced, an additional processing step for producing the surface profile is not required.

The third embodiment can be used in particular with thin-walled base element 2. In addition, a reliable anchoring of the guide element 4, 5 is achieved on the base member 2 by the plurality of wells.

As can be deduced from the above statements, the at least one depression at the joint 45 can be made with a depth between 0.1 mm and 3 mm and a width between 0.1 mm and 20 mm.

In FIGS. 8 and 9, the guide element 4, 5 is shown in different views. The guide element 4 is made of plastic, in particular thermoplastic, preferably in one piece by injection molding and comprises a sleeve body 46, a hollow cylindrical mounting portion 47 and extending therethrough receiving opening 48. The guide member 4 may optionally also have a bottom which the receiving opening 48th closes, as this is not shown. The guide element 4, 5 may alternatively be made of a composite material of metal and plastic, in which case at least the attachment portion 47 is made of plastic.

The sleeve body 46 is provided on the one hand at its inner peripheral surface with axially extending, diametrically opposite and projecting into the receiving opening 48 guide projections 49 and on the other hand on its outer peripheral surface extending in the axial direction, diametrically opposed grooves 50 for receiving oil. Preferably, the guide projections 49 extend at least over the axial length of the sleeve body 46. Between the guide projections 49 running parallel in the direction of the longitudinal axis of the guide element 4, a respective flow channel is formed over which In the production of the joining connection to be described in more detail, the air enclosed between the fastening section 47 and the auxiliary tool 57 or the steam produced during joining can escape.

The guide element 4 is supported in the mounted state with the guide projections 49 on the peripheral surface of the base element 2, as shown in Fig. 10d.

The fastening section 47 has a material region 53 which can be melted or plastically deformed by heat input in a thermal joining process. The material region 53 is formed at the free end of the attachment portion 47.

By means of an energy directing device 51, targeted as well as concentrated energy introduction to the meltable material region 53 is achieved so that the joining time can be kept low. The fastening section 47 comprises the energy directing device 51, which is formed concentrically to the longitudinal axis of the guide element 4 and extends over a partial length of the fastening section 47. According to this embodiment, the energy directing device 38 is defined by acute-angled bordering surfaces, wherein the boundary surfaces terminate in a body edge.

As can be seen in FIG. 9, the fastening section 47 between the sleeve body 46 and the material region 53 can also comprise a collar 52 extending concentrically with respect to the longitudinal axis of the guide element 4.

The guide element 5 corresponds to the structural design of the guide element 4 described.

FIGS. 10a to 10d show the method for producing a joint connection between the guide element 4 shown in FIG. 9 and the base element 2 shown in FIG. 3 in successive method steps.

The joining connection is produced in a fully automated or partially automated joining station (not shown). For this purpose, the prefabricated guide element 4 is first pushed onto the base element 2 in the joining station (FIG. 10a) and fastened to the base element 2, in which in the mounting region 44 between the guide element 4 and the base element 2 by forming the material region 53 with a thermal joining process a positive connection , in particular flanged seam, is produced (FIG. 10d).

According to the inventive method, the base element 2 and the guide element 4 is prefabricated to the final dimensions and provided as individual components in the joining station. Even before the base member 2 and the guide member 4 are joined in the joining station, they must be aligned in their position to each other so that a longitudinal axis 54 of the base member 2 and a longitudinal axis 55 of the guide member 4 are aligned.

For this purpose, the base element 2 and the guide element 4 is brought in a first joining stage of the joining station on (not shown) positioning devices each in a required joining position for prefitting. Thereafter, by a relative movement, the base member 2 and the guide member 4 with each other prefixed (Fig. 10a) by the base member 2 and the guide member 4 in a direction parallel to the longitudinal axes 54, 55 joining direction toward each other and thereby the guide member 4 preferably below Force is pushed onto the base element 2.

According to the embodiment shown, the base element 2 is held on the positioning device in its joining position, while the guide element 4 is pressed by a (not shown) joining tool, in particular a press ram, under the action of force on the end of the base element 2.

During the joining process, the guide surfaces of the guide projections 49 and the peripheral surface of the base member 2 touch, so that the base member 2 and the guide member 4 are vorged essentially free of play. The guide element 4 is pressed by the joining tool with a joining force on the end of the base member 2, which is adjusted by the friction between the mutually contacting guide and peripheral surfaces. Thereafter, in a second joining stage of the joining station, the guide element 4 is permanently connected to the base element 2 by ultrasound joining. For this purpose, an auxiliary tool 57 is first moved into the mounting area 44 in a working position. The auxiliary tool 57 has a receiving opening 60 and a recessed in the side surface 61 mold cavity 62, wherein the receiving opening 60 is limited in diameter by a lateral surface 63. The diameter of the receiving opening 60 is dimensioned slightly larger than an outer diameter of the base element 2. The mold cavity 62 forms in the depth direction between the side surface 61 and the lateral surface 63 of a contour shape 64, which serves to produce the joint connection between the base member 2 and the guide member 4. The mold cavity 62 is delimited by a mold wall 65 extending axially in the direction of the longitudinal axis of the auxiliary tool 57 and a mold wall 66 extending radially to the longitudinal axis of the auxiliary tool 57. The mold walls 65, 66 form the mold contour 64 and define a filling space. In addition, the auxiliary tool 57 between the side surface 61 and the mold cavity 62 form a concentric around the longitudinal axis of the auxiliary tool 57 and recessed in the side surface 61 formed recess 67 for receiving the collar 52. The auxiliary tool 57 may be formed integrally or by a plurality of radially adjustable to the longitudinal axis 54 of the base member 2 segments.

The auxiliary tool 57 is mounted according to a preferred embodiment on a (not shown) electronically controlled drive unit, which has at least one electric drive, in particular continuously controllable servo motor. The drive is connected to an electronic control, which in turn has an electronic evaluation unit, in particular a controller. This can evaluate a joining force and / or a travel of the auxiliary tool 57. For this purpose, the applied torque or the motor current of the continuously controllable electric motor is detected and the actual value of the joining force and / or actual value of the travel of the auxiliary tool 57 is determined. The travel of the auxiliary tool 57 is determined via a (not shown) Wegmesssystem. In the evaluation unit, a desired-actual comparison of the joining force and / or the travel is performed.

In the working position (Fig. 10, 10c), the auxiliary tool 57 is positioned with the mold cavity 62 coaxial with the joint 45 and encloses with its shape contour 64 adjacent to the joint 45 peripheral portion of the base member 2. Here, the auxiliary tool 57, the base member 2 in the circumferential direction only over a peripheral portion or completely enclose.

In order to achieve an exact positioning of the mold contour 64 relative to the joint 45, it proves to be advantageous if the position of the joint 45 is determined and the working position of the auxiliary tool 57 is determined by the controller by the actual position position of the joint 45. The actual position position can be determined according to an embodiment via a (not shown) measuring system, for example by a probe or an optoelectronic measuring system, in particular laser or infrared measuring system or triangulation sensor and the like, or by an ultrasonic measuring system.

On the other hand, it is also possible that the base member 2 is positioned with one of the end face against a reference surface in the joining station, for example on a clamping unit, and the position of the joint 45 is set by a controller as a fixed value. After the fixed value and the actual position can deviate slightly due to the usual manufacturing tolerances of the base element 2, it is now provided that the controller is acted upon by a correction value and the auxiliary tool 57 is moved to a specified by the control work position. Thus, the corrected working position of the auxiliary tool 57 can be calculated from the difference between the fixed value for the positional position of the joint 45 and an offset dimension defined in the axial direction relative to the joint 45. The offset dimension is greater than the bandwidth of those manufacturing tolerances of the base member 2, which leads in the axial direction to a deviation between the fixed value for the position position and the actual position position. In other words, the manufacturing tolerances on the end face and / or the joint 45 of the base element 2 have an effect on the positional position of the joint 45. Thus, the offset dimension relative to the joint 45 in the axial direction of the base element 2 may be, for example, between 1 mm and 6 mm, in particular between 2 mm and 4 mm. The offset amount will vary depending on the volume of material that is melted by heat input from the mounting portion 47 and fills the mold cavity 62. Therefore, the offset amount can be increased as the filling volume of the mold cavity 62 increases.

The described embodiment has the advantage that the metrological effort is eliminated and thus the joining station can be easily constructed.

If the auxiliary tool 57 has now been positioned in the working position, the base element 2 with the guide element 4 and the joining tool 58, in particular a sonotrode in a joining direction 59 running parallel to the longitudinal axes 54, 55, is displaced relative to one another in the second joining step and thereby the guide member 4 moves on the base member 2 in the mounting portion 44, as entered in Fig. 10b.

The joining tool 58 is mounted according to a preferred embodiment on a (not shown) electronically controlled drive unit, which has at least one electric drive, in particular continuously controllable servo motor. The drive is connected to an electronic control, which in turn has an electronic evaluation unit, in particular a controller. This can evaluate a joining force and / or a travel path of the joining tool 58. For this purpose, the applied torque or the motor current of the continuously controllable electric motor is detected and the actual value of the joining force and / or actual value of the travel of the joining tool 58 is determined. The travel of the joining tool 58 is determined via a (not shown) distance measuring system. In the evaluation unit, a desired-actual comparison of the joining force and / or the travel is performed.

Preferably, the guide element 4 is positioned on the mounting region 44 such that an end edge 68 (FIG. 9), which faces the auxiliary tool 57 positioned in the working position, runs against the radial mold wall 66. By evaluating the joining force and / or the travel path of the joining tool 58, a starting time for the start of the joining process can be determined by the controller. For example, a limit value for the joining force and / or travel is determined by the controller. If the actual value of the joining force and / or actual value of the travel reaches the limit value, a control signal is generated by the controller, which impresses the drive unit for the joining tool 58 and the joining process is started.

During the joining operation, heat is generated by the joining tool 58 in the fastening section 47, so that the plastic material of the material region 53 begins to melt. Heat is supplied and plastic material is melted until the filling space of the joint 45 and the mold cavity 62 of the auxiliary tool 57 are completely filled with the plastic melt, as shown in FIG. 10c. This results in a flanged seam, which is produced by thermal deformation. If necessary, the melt may flow into the recess 67 adjoining the mold cavity 62 if there is excess material. Due to the continuous relative movement between the base element 2 and the guide element 4, the melted material is pressed into the filling chambers with pressure. The auxiliary tool 57 is preferably not moved during the joining process and held in the working position.

If the guide element 4 is in its final assembly position shown in FIG. 10c relative to the joining direction 59, the heat input is terminated and the liquid (doughy) plastic material solidifies in the filling space and mold cavity 62. The base element 2 and the guide element 4 are thereby held in their joining positions relative to the joining direction 59 exact position and cools the molten material under force by the joining tool 58 from. The mounting position for the guide element 4 results preferably from the evaluation of the joining force and / or the travel path of the joining tool 58. If, for example, the joining tool 58 has been adjusted to a limit set by the control for the travel, the guide element 4 is in its desired position - 14/27 Austrian Patent Office AT509 996 B1 2012-01-15

Mounting position, and the relative movement between the base member 2 and the guide member 4 is stopped.

After curing of the molten plastic material, the auxiliary tool 57 is moved away from the mounting area 44 again. The result is a protruding on the outer circumference of the base member 2, collar-like seam 70 (flanged seam) whose inner dimension is smaller than the outer dimension of the base member 2. As shown in Fig. 10d, the base member 2 and the guide member 4 are permanently connected to each other via a positive connection.

According to a preferred embodiment, the base member 2 is held on the (not shown) positioning in its joining position, while the guide member 4 is pushed over the schematically illustrated joining tool 58 (sonotrode) under force and heat to the base member 2. During the joining and joining process, the respectively opposite guide surfaces of the guide projections 49 and the peripheral surface of the base member 2 touch, so that the base member 2 and the guide member 4 are guided substantially without play each other. The guide element 4 is pressed by the joining tool 58 with a joining force to the base element 2, which adjusts itself by the friction between the guide projections 49 and the peripheral surface of the base element 2 and the counterforce resulting from the melt bath on the guide element 4 against the joining direction 59.

By evaluating the joining force and / or the travel path, a quality control can be carried out, in particular the dimensional accuracy of the base element 2 and guide element 4 detected and the joining process, such as the melting of the material area or the end of the joining process to be monitored. Thus, the joining force is monitored when the guide element 4 is pushed onto the base element 2.

If, for example, a material region is not properly melted, this is detected by determining the joining force and the setpoint-actual-value comparison of the joining force carried out in the evaluation unit, and the base element 2 with the guide element 4 from the production process by a control unit actuated by the evaluation unit Extraction device discharged as a reject part (e).

About the travel of the joining tool 58, the mounting position of the guide member 4 can be monitored when pushed onto the base member 2. The guide element 4 is slid so far in the joining direction 59 on the base member 2 until the actual value reaches a desired value (limit). If the evaluation of the mounting position on the joining force, the target mounting position is determined by evaluating the increase in force when starting the end edge 68 on the mold wall 66.

The guide element 4 can be pushed in the joining direction 59 as far as possible to the base member 2 until the collar 52 abuts against the bottom of the recess 67. Now, if the joining force is evaluated, it can be recognized by the controller by the strong force increase after the abutment of the collar 52 against the ground that, for example, the working position of the auxiliary tool 57 must be corrected relative to the joint 45.

As a result of the evaluation of the joining force and the travel path, both the proper joining process and the mounting position of the guide element 4 on the base element 2 can be monitored.

In a preferred embodiment, joining takes place by ultrasound, in which a so-called sonotrode (joining tool) is placed on the end edge 69 and the base element 2 with the guide element 4 and the sonotrode are moved relative to each other. The sonotrode in the guide element 4, the molecules are vibrated and generated by the internal friction heat and melted the material area. Due to the targeted introduction of energy into the energy directing device 51, the plastic material melts very quickly in the material region 53. It thus created by thermal deformation produced plastic material deformation. 15/27 Austrian Patent Office AT509 996B1 2012-01-15 [00123] The base element 2 and the prefabricated guide element 5 are joined together in the same way.

Even if, according to the embodiments described above, the joint connection between the base element 2 and the guide element 4, 5 or the switching cheek 8a, 8b and the guide element 9a, 9b is produced by ultrasound, the joint connection can also by other thermally acting joining method, which operate with laser light, electron beam or sound waves with a frequency less than 20 kHz, or are produced by an embossing process under the action of temperature at least on the plastically deformable material region 39, 53 of the guide element 4, 5 or 9a, 9b.

In the following, the method for manufacturing the switching device 1 will be described. As described above, the base element 2, the switching cheeks 8a, 8b, 8c of the base body 3, the guide elements 4, 5, 9a, 9b are prefabricated for the time being and then joined to the switching device 1 in a joining installation (not shown).

The production of the switching device 1 takes place in successive positioning and joining processes.

In a first positioning and joining process, the base body 3 and the base element 2 are connected to one another. For this purpose, the first shift cheek 8a and second shift cheek 8b (in a first direction) in the transverse plane of the shift device 1 to a required distance measure (shift jaw width) between the guide elements 9a, 9b and (in a second direction) in the longitudinal plane of the switching device 1 in a aligned position position relative to each other positioned and joined together in their aligned relative positions. The switching cheeks 8a, 8b are applied during the positioning process relative to the base element 2 with their joining surfaces 13a, 13b against the joining surface 14 of the base element 2, wherein due to the high manufacturing accuracy of the joining surfaces 13a, 13b, 14 in a radial direction to the longitudinal axis of the base element 2 a sufficient positioning accuracy (in a third direction) is given.

The positioning of the switching cheeks 8a, 8b can take place via a positioning device, not shown, which motorized adjustable positioning elements, such as positioning pins with a cylindrical engagement surface or positioning with a spherical engagement surface, which in the positioning and joining process in a (not shown) Positioning, such as a hole in the connecting portion 12a, 12b, can engage the switching cheeks 8a, 8b.

If the prefabricated shift cheeks 8a, 8b are positioned in the three spatial directions and with respect to one another, the shift cheeks 8a, 8b are firmly connected to the base element 2 via integral joining connections, in particular the joining seams 28.

In a second positioning and joining process, the third shift cheek 8c becomes relative to the base member 2 in a transverse direction (FIG positioned to the switching cheeks 8a, 8b and joined in their aligned relative position on the joining seams 28 with the base element 2. The third shift cheek 8c is applied during the positioning process relative to the base member 2 with the joining surface 13c against the joining surface 14 of the base member 2, wherein due to the high manufacturing accuracy of the joining surfaces 13c, 14 in a radial direction to the longitudinal axis of the base member 2 sufficient positioning accuracy (in a third direction) is given.

In a third positioning and joining process, the disk 40 of the connecting device 6 is positioned in the axial direction relative to the base element 2 and joined to the base element 2 via the joining seams 41.

In a fourth positioning and joining process, the guide elements 4, 5 in the manner described above with the base member 2 either before or after the joining of the switching cheeks 8a, 8b, 8c joined to the base member 2. The guide elements 9a, 9b are in a fifth positioning and joining process in the manner described above with the switching cheeks 8a, 8b either before or after the joining of the switching cheeks 8a, 8b joined to the base element 2.

Of course, the order of positioning and joining processes can be arbitrarily selected.

A switching system may comprise a plurality of switching devices of the type described above, wherein the switching devices differ only in that the base bodies are attached to the base elements at different longitudinal positions and the base elements optionally have different axial lengths. The basic body, base elements and guide elements can be identical. As a result, only a few different parts have to be produced in the production, so that the production can be well automated. Likewise, a simple and inexpensive production in mass production is possible. The number of switching devices varies depending on the number of gear stages to be shifted.

Preferably, all, as described above and realized by beam welding joint connections are made without filler material.

All information on ranges of values in the present description should be understood to include any and all sub-ranges thereof, e.g. the indication between 0.5 and 2.5 shall be understood to mean that all sub-ranges, starting from the lower limit of 0.5 and the upper limit of 2.5, are included; all subareas begin with a lower limit of 0.5 or greater and end at an upper limit of 2.5 or less, e.g. 0.5 to 1.7, or 2 to 2.5.

For the sake of order, it should finally be pointed out that for a better understanding of the structure of the switching device 1, these or their components have been shown partially unevenly and / or enlarged and / or reduced in size.

Above all, the individual embodiments shown in FIGS. 1 to 10 can form the subject of independent solutions according to the invention.

Reference drawing 1 Switching device 21a, 21b elevation 2 base element 22a, 22b recess 3 base 23 guide surface 4 guide element 24 guide surface 5 guide element 25 boundary surface 6 connection device 26 opening 7 switching axis 27 8a, 8b, 8c shift cheek 28 joining seam 9a, 9b, 9c guide element 29 side wall 10a, 10b, 10c mounting portion 30 side wall 11a, 11b, 11c receiving portion 31 sole 12a, 12b, 12c connecting portion 32 receiving opening 13a, 13b, 13c joining surface 33 fixing portion 14 joining surface 34 guide surface 15a, 15b embossment 35 guide surface 16a, 16b holding support 36 guide surface 17 height 37 joint seam 18 Wall thickness 38 Energy directors 19 Width 39 Material range 20 Width 40 Washer 17/27

Claims (17)

Austrian Patent Office AT509 996 B1 2012-01-15 41 Joint 61 Side surface 42 Thread section 62 Mold cavity 43 Adjustment 63 Sheath surface 44 Mounting region 64 Shaping contour 45 Joint 65 Shaped wall 46 Sleeve body 66 Shaped wall 47 Attachment section 67 Recess 48 Through opening 68 End edge 49 Guiding projection 69 End edge 50 Groove 70 Joint 51 Energiichtungsgeber 52 collar 53 material area 54 longitudinal axis 55 longitudinal axis 56 joining direction 57 auxiliary tool 58 joining tool 59 joining direction 60 receiving opening claims 1. A method for producing a joint connection between a at least partially prefabricated plastic functional element (4, 5) and a carrier element (2), in particular a transmission component, such as a switching device (1), in which at least one functional element (4, 5) via a receiving opening formed in this (48) spent on the support element (2) and in an assembly Area (44) by thermal joining to the support element (2) is firmly connected, characterized in that in the manufacture of the joint connection, an auxiliary tool (57) is used, which surrounds the carrier element (2) in the circumferential direction during the joining process and thereby a joint (45 ) in the axial direction of the carrier element (2) on at least one side such that the plastic melted during the joining of the functional element (4, 5) remains at the joint (45). 2. The method according to claim 1, characterized in that the functional element (4, 5) plastically deformed by heat input in a material region (53) and at the joint (45) by a positive connection on the support element (2) is anchored. 3. The method according to claim 1 or 2, characterized in that on the carrier element (2) at the joint (45) at least one recess, in particular a groove, surface structure or grooves, is present, in particular produced, which melted during thermal joining plastic material at least partially receives, so after curing of the plastic material, a positive connection, in particular a flanged seam, between the functional and support element (2, 4, 5) is formed. 4. The method according to claim 1 or 2, characterized in that the functional element (4, 5) has a fastening portion (33) with a material region (53) made of plastic, in particular thermoplastic material, which is melted by the heat input during joining. 5. The method according to claim 1 or 2, characterized in that the functional element (4, 5) in a longitudinal extent of the support element (2) parallel joining direction (56, 59) under the action of force on the mounting portion (44) of the support element (2) is pushed. 18/27 Austrian Patent Office AT509 996B1 2012-01-15 6. The method according to any one of claims 1 to 5, characterized in that during the relative movement between the guide element (4, 5) and the carrier element (2) the guide element (4, 5) with the base element (2) is joined. 7. The method according to any one of claims 1 to 6, characterized in that the auxiliary tool (57) has a mold cavity (62), by means of which at the joint (45) relative to the carrier element (2) radially projecting joint seam (70) is produced , 8. The method according to any one of claims 1 to 7, characterized in that the auxiliary tool (57) in the mounting region (44) is moved to a working position while the mold cavity (62) having a mold contour (64) relative to the joint (45). is positioned so that the shape contour (64) and a boundary surface of the joint (45) limit a filling space for receiving the molten plastic material. 9. switching device (1) for a change-speed gearbox, comprising a tubular base member (2) and connected thereto via a cohesive joint connection body (3) for axial displacement of a sliding sleeve, characterized in that the base body (3) manufactured separately from each other switching cheeks (3 8a, 8b) and in that the base element (2) forms a joining surface (14) and the switching cheeks (8a, 8b) form a mounting section (10a, 10b) extending over a circumferential section of the base element (2) and concavely shaped , wherein the switching cheeks (8a, 8b) via the mounting portion (10a, 10b) relative to the joining surface (14) can be positioned and connected via cohesive joint connections (28) with the base element (2). 10. Switching device according to claim 9, characterized in that the mounting portion (10a, 10b) on one of the joining surface (14) facing away from the side surface and / or the base element (2) with at least one plastic material deformation (15a, 15b), in particular embossing provided is. 11. Switching device according to claim 9, characterized in that the tubular base element (2) in a mounting region (44) for a guide element (4, 5) with a joint (45), in particular a recess, is equipped. 12. Switching device according to claim 9, characterized in that the tubular base element (2) with a connecting device (6) for an actuator for switching movement of the switching device (1) is equipped. 13. Switching device according to claim 9, characterized in that the tubular base element (2) is provided in its wall with at least one passage (43) for discharging oil. 14. Switching device (1) for a change-speed gearbox, comprising a base body (3) for axial displacement of a sliding sleeve which forms at least one receiving portion (11a, 11b) and is provided with at least one guide element (9a, 9b) which on the receiving portion (11a , 11b) is fastened by a joint connection, wherein the receiving portion (11a, 11b) with the base body (3) by forming chipless produced holding receptacle (16a, 16b) which opposite to the width (20) of the receiving portion (11a, 11b ) smaller width (19) and in the displacement direction opposite guide surfaces (23) is formed, characterized in that a prefabricated, one-piece guide element (9a, 9b) is provided with opposing guide walls (29) and a fastening portion (33) arranged between these which in mounted on the receiving portion (11 a, 11 b) state with its guide walls (29) against the guide surfaces (23) of the holding receptacle (16a, 16b) is supported and held relative to the base body (3) by means of the fastening section (33), wherein the guide element (9a, 9b) is deformed by partially plastic deformation of the fastening section (33) with the retaining receptacle (33). 16a, 16b) is firmly connected. 19/27 Austrian Patent Office AT509 996 B1 2012-01-15 15. Switching device according to claim 14, characterized in that the holding receptacle (16a, 16b) forms an enforcement. 16. Switching device according to claim 14, characterized in that the fastening portion (33) has a plastically deformable by heat input material region (39), via which the fastening portion (33) after its deformation as a positive connection to the holding receptacle (16a, 16b) is anchored. 17. Switching device according to one of claims 14 to 16, characterized in that the fastening portion (33) inserted through an opening (26) in the holding receptacle (16a, 16b) and the out of the opening (26) protruding material region (39) is plastically deformed by heat input, so that in the receiving portion (11a, 11b) formed recess (22a, 22b) with the attachment portion (33) from the material region (39) melted material is partially filled and the receiving portion (11a, 11b) is engaged behind. For this 7 sheets drawings 20/27