DE10051126A1 - Hydraulic block, esp. valve block for motor vehicle brake system has component fastened to it in individual connection points by caulking or clinching - Google Patents

Abstract

The valve block (1) has at least one component (2) fastened to it positively in one or more individual connection points. The component is an electric motor, regulator housing, solenoid valve, or pressure accumulator, and the connection is via caulking or clinching. The block has an aperture (5) with projection (8), and the component has a projecting bracket (3) with opening (7) engaging with block aperture and projection.

Description

The present invention relates to a hydraulic block, in particular valve block of a slip-controlled brake system ge of a vehicle, according to the preamble of the patent Proverb 1. The present invention further relates to Method according to the preamble of patent claim 27.

It is known from the prior art to attach parts to an egg hydraulic block of a hydraulic control unit (HCU) to be fastened by means of screw connections. Such power conclusive screw fastenings have the after partly that additional measures are required, which counteract an independent loosening of the screws. This is especially true if the screws only have a short clamp own lengths.

From the generic document DE 41 04 804 A1 it is fer ner known, solenoid valves by means of caulking to connect with a hydraulic block. Since the Ver All around, d. H. on the entire circumference of the attachment. On the one hand, this is cost-intensive and requires others on the one hand, a hole in the hydraulic block, into which the attachment or solenoid valve can be used here. With that too  caulking material is present, the hydraulic system block correspondingly thicker, which in addition to the Construction volume increase also to an increase in weight of the hydraulic block.

The object of the present invention is therefore to avoid the disadvantages of the prior art, and egg ne Connection of a hydraulic block with one or more Train attachments in such a way that this connection which is simple, inexpensive, compact and safe.

This task is done with a valve block and a procedure ren of the type mentioned in the claim 1 or 27 specified features solved.

There is a particular advantage of the present invention in that if the attachment of the attachment to one or several individual connection points is provided, one can do without the complex all-round caulking. Furthermore, no all-round material is required Lich, so that the hydraulic block smaller and lighter can be designed. In contrast to all-round caulking the attachment to individual connection points also easier and cheaper.

Advantageously, the attachment is in particular an elec tromotor. Such an electric motor can be used as direct current engine designed and provided for pump drive. However, the attachment attached according to the invention can  another component, such as. B. a pressure accumulator or the housing of an electronic assembly.

The form-fitting fastening is preferably an amplification mung. By caulking or clinching is on a simple and cost-effective way a particularly si Secure connection reached. To avoid excessive ver leverage during assembly is the form-fitting befe Essentially locally at least at one point educated. Through the local training of caulking a variety of locations, especially along the circumference ges of the attachment, especially with attachments a relatively large outside diameter in a simple manner particularly safe caulking with little at the same time Power and cost can be achieved.

According to a preferred embodiment of the invention the valve block has at least one recess, the Attachment has at least one protruding tab, and the material of the Ven til blocks for fixing the at least one tab ver is stemmed. By forming a tab on the extension Part of a caulking regardless of its shape binding are provided.

It can be provided, for example, that the little least a tab resiliently in the at least one recess mung is attached. The resilient bias can Tab by appropriate shaping or bending of the same ben are generated in the unstressed state. This offers  also advantages in terms of assembly, since the La is fixed after insertion into the recess. In addition can thus tolerances between the valve block and the Attachment to be compensated. It is also preferred that with or without pre-tensioned La cal, due to the caulking process itself the tab is applied. For example, the over the flap stood over the contact surface and / or the depth the holes are designed so that an additional Stop is impressed by the bias.

The at least one recess preferably has one Projection on, wherein the at least one tab ent has speaking recess. This can increase the strength the positive connection can be further increased.

The protrudes preferably in the intended installation position jump through the recess, the protrusion over the at least one tab is caulked. So the tab can be fixed on both sides of the projection.

Especially for attachments that extend to one edge extend the valve block is preferably provided that a surface of the valve block on a surface of the attachment is applied, the attachment to another surface or Side surface of the hydraulic or valve block is formed is. This variant of the invention is particularly in the Preferred case, in which on the adjacent surfaces no space for the provision of a caulking point is there. This "corner" included in the invention  Connection "is also in terms of the strength of the Attachment is an advantage.

To facilitate assembly and to increase the fastening The valve block is preferably on the other Surface or side surface at least one recess, wherein the attachment has at least one protruding tab points, and wherein a latching hook is formed on the tab which engages in the at least one recess.

Advantageously, the hydraulic block on the other Surface also have at least one recess, the Attachment includes at least one protruding tab, and wherein a tongue is formed on the tab, which in the recess is bent. Through the bending step the strength of the attachment is further increased.

If you want in the above embodiments in particular have a fixed positive connection, so is for everyone Connection point a recess or a hole-shaped opening provide provision in which the assigned tab enough. Part of the opening wall is then caulked, so that a radial approach of the tab is positively held becomes. This construction completely fulfills a simple che and safe as well as permanent connection between the Attachment and the hydraulic block, the previous also was often referred to as a valve block. The usage of valves in the hydraulic block is, however, for the Invention not decisive. It is sufficient if this block is suitable  is predetermined as a function of control signals Open or close hydraulic paths.

The drilling of recesses or openings in the housing The hydraulic block requires additional operations ge, where the number of holes from the number of ge depends on the desired connection points. If you have multiple ver connection points, you have to drill accordingly often, or it must be drilling several recesses at the same time a correspondingly complicated tool can be used.

If you want the caulking in a simpler way Achieve agile protrusions is recommended in Next education of the invention, the combination of features according to claim 11. This particularly advantageous principle consists in we significant in that one or more parallel as a lead Provide extending webs that are located on the attachment assigned area of the hydraulic block over the entire Extend area. The webs can be relatively high and narrow his. Is the distance between the bars chosen so that they tang tial to the attachment part of the attachment used for fastening are sufficient, the webs only need at the point of contact between the attachment point of the housing and the web locally to be caulked. You then have two very simple ver leverage points that may be sufficient for attachment nen, which must be less stable. The parallel webs can be done simultaneously as described below with the manufacture of the hydraulic block housing in the strand Manufacture or add pressing process.  

The webs can also, after further processing have an inverted L-shape, so that the attachment edge of the attachment is inserted laterally in the form of a rail and then can be attached by caulking. A Be piece of the hydraulic block in a perpendicular to the befe then direction is not possible anymore.

In many cases, however, one would like to have two fastening points instead of two have four or more attachment points over which the attachment is caulked with a hydraulic block. In this The case is recommended in a further development of the invention Combination of features according to claim 12. Practically means this means that at least two preferably parallel to each other Webs are molded onto the block housing.

But since the attachment is not on the webs, but in height the surface of the mounting side of the valve block zen must, here, as above together slope described with the surface of the valve block, ent speaking of the combination of features according to claim 13 in the Web recesses are inserted, in which then the most protruding projections or tabs of the attachment. The individual inserted recesses thus have the Approaches adjacent walls that with the projecting La approaches or can be caulked. Under the An assumed that the contour of the attachment has a circular diameter can correspond with the help of a single depression corresponding diameter size, all the connecting parts jump walls can be created at the same time. The sinking  can be used for a machined surface for the Put on the circular attachment, so it can even a little deeper than the surface of the attached part facing side of the hydraulic block, so that they can serve sealing purposes at the same time, how further will be explained below. Has the attachment a right angular contour, two pairs can be made with just two webs parallel lines of several caulking or Reach connection points.

Of course, it is also possible for the Verbin necessary recesses by an appropriate casting process through which the hydraulic block will be produced. By applying the appropriate forces and with correspondingly soft material it is also possible a sufficiently large depression with a suitable diameter press it directly into the hydraulic block. In this Trap is then a circular wall to Ver addition at the appropriately chosen local locations for Caulking of the fastening approach in the depression inserted blocks can serve.

The insertion of the recess for fastening is done in the Usually before inserting the hydraulic channels inside of the hydraulic block.

If the attachment approach or the tab has a smooth Surface, there is a risk that the caulking in the mounting plane in the tangential direction triggers so that the attachment ultimately from the mounting position  can be unscrewed by pulling the tabs out of the Swing out the caulking points. This can be done prevent use of the features of claim 16 find, d. H. by inserting openings and recesses or also suitable projections in the tab are Caulking undercuts in the to mounting levels parallel plane formed which is a twisting or out prevent swiveling of the attachment.

If the attachment only lies smoothly over the caulking points the surface of the hydraulic block, so it can sweat if the contact surface is sealed have to be. In these cases, further training is recommended the invention the application of the combination of features Claim 17. The depression or recess is not only up to the foot of the footbridges, but preferably one more Inserted further into the hydraulic block. It ent is then a preferably circular recessed edition surface for the attachment with a surrounding wall. Is the attachment approach is also circular, so by a hollow cylindrical caulking tool the circumferential Ver edge continuously at the individual connection points be lifted. The invention also allows use the clinching process, in which locally on the web walls or opposite the circumferential wall of the depression by ent speaking harnessing tool the harder material the attachment approach or the respective tab in the softer material of the hydraulic block is pressed.  

A possible twisting of the attachment in relation to the befe increasing caulking points can also be used prevent extension of the features of claim 18. Here will inserted a recess in the block or in the web, which has a contour that the contour of the assigned Tab of the attachment corresponds. This can, for example preferably be semicircular so that they are without Difficulties caused by a cylindrical drilling tool has the bridge brought in. Since the wall corresponds to that corresponding section of the assigned tab, for example surrounds semicircular, the attachment can no longer ver be rotated. By caulking the recess walls then lifting the attachment from the hydraulic block not possible anymore.

Because to caulk the attachment to the hydraulics block just a ledge over the mounting boss or the tab of the attachment is necessary, this can in a further development of the invention also obtained in a way as listed in claim 19. After that the required lead is not achieved by a Stigungsfläche reaching recess as recess wall ge won, but the material is made from the block expressed that a contrary to the future caulking force directed from the mounting side opposite side acts on the hydraulic block. In usually the block will be so thick that the usual Forces will not be sufficient, a corresponding befe working out on the fastening side One can then look through the context of claim  Measures described 19 help by the Ma material in the fastening area from the counter surface mend weakened until finally available through the standing force of the projection from the fastening surface che can be put out.

As already explained at the beginning, the invention is not only for attaching an electric motor to a Ven tilblock, but also other assemblies, such as as pressure accumulator or controller housing on a hydraulic system block suitable. However, the housing to be attached an electronics unit usually not from a fixed one Material, but be made of plastic, which by the caulking process could be destroyed locally. Use you therefore find a plastic housing for the electronics unit, so is recommended in further development of the invention in An Proverb 20 described procedures. In principle, there will be to the plastic housing of the Metalla electronic control or a circumferential console-shaped approach made of Me tall cast on, then in the manner described above can be caulked with the hydraulic block.

The object of the present invention is inter alia also suitable for a releasable positive connection, as shown in connection with FIGS. 23 to 29. In order to be able to optimally apply this principle, the combination of features according to claim 21 is recommended in further training. The tab is therefore no longer caulked, but inserted into an undercut and jammed there. The undercut can be formed by a milling cutter or another suitable tool, and can be formed with the position of the inserted recess. The advantage that is achieved through the material-saving use of the webs is retained even with this type of connection.

To the tabs of the attachment more easily in the rear to be able to push in the protrusions and for to ensure a constant increase in clamping force is recommended the combination of features in a development of the invention according to claim 22. The tab thus has in the direction of movement tion a substantially wedge-shaped ramp that the Einfä relieved and for a growing increase in Clamping force with progressive insertion of the tab into the Undercut provides.

With move in the radial direction to the attachment the movement of the caulked material can be detrimental current loads on the housing and thus in the housing anchored facilities come because the load of meh the other side acts radially on the edge of the housing, which can therefore not avoid and possibly deformed a little becomes. It is therefore proposed that the arrangement be such to design that the material flow of the caulking material rials not radial but tangential to the circumference of the an component runs. It is also proposed not un indirectly caulking the lower edge of the attachment, but to provide tabs there, which are removed from the lower edge of the case. In an advantageous way terbildung the invention here is the combination of features  proposed according to claim 24. This remains inventive cal principle of material saving and preferably through Extruded web obtained. But now it will no longer directly the edge of the attachment in radial Caulked in the direction, but it becomes one in the radial direction tion extending edge to a side wall of the web applied and the caulking takes place at a distance from the An component with a tangent to the circumference of the attachment current flow direction of the material. It is not necessary that only one edge of the tab opposite one Bridge is caulked. The tab can also be forked Include web, so that in both tangential directions both inner fork edges are tangentially caulked.

Another way to tan two edges of a tab The combination of features shows that potential caulking is possible according to claim 25. The two side surfaces are egg ner flap adjacent to the inner walls of two parallel extending webs, the two being in this way edges of the tab can be caulked in the tangential direction are.

You will regularly use the attachment on the hydraulic block want to fix a symmetrically arranged attachment. For this purpose, the feature comma combination according to claim 26 recommended. In principle, it will through an inserted recess in the web space for the Recording of the attachment created. To accommodate the cultivation partly a part of a web is thus removed, so that two protrusions adjacent to the location of the attachment  remain from the jetty. With two parallel bars accordingly there are four projections. The side edges or Side edge of the tab or tabs are on the sides wall of the web or the two parallel webs, so that a tangential caulking of the two ra each other dial opposite tabs of the attachment can. The tabs will be placed so that they are in opti absorb painterly forces exerted on the attachment capital.

If the attachment is, for example, a radial piston pump two radial pistons, so you will put the tabs in such a way that the force exerted on the attachment as possible in The longitudinal direction of the tabs runs. That is the direction in which the stem connection without deformation of the attachment able to absorb the greatest forces.

The invention, as well as further features, goals, advantages and Applications of the same will or will follow gend explained with reference to the accompanying drawings. The same reference numbers are used throughout the drawings chen the same or corresponding elements. In doing so all described and / or illustrated elements for itself or in any meaningful combination the Ge subject of the present invention, independently from their summary in the claims or theirs Relationship. The drawings show:

Fig. 1 is a schematic representation of a section of a view from above of the hydraulic block according to the invention according to a first embodiment of the present invention;

FIG. 2 shows a detail of a sectional view along the line II of FIG. 1;

Figure 3 is a schematic top view of a hy drauliktilblock according to a second embodiment example of the present invention.

FIG. 4 shows a detail of a sectional view taken along the line III-III of FIG. 3;

Fig. 5 is a schematic view from above of a Ven tilblock according to a third or fourth exporting approximately example of the present invention;

Fig. 6 is a schematic illustration of a detail of a cross-sectional view taken along the line VV of Figure 5 according to a third Ausführungsbei game of the present invention.

Fig. 7 is a schematic illustration of a detail of a cross-sectional view taken along the line VV of Figure 5 according to a fourth Ausführungsbei play the present invention.

Figure 8 is a side view of a valve block with two webs ver, to which an engine is attached;

Figure 9 is a section through the attachment portion as shown in FIG 8 of the engine to the hydraulic block..;

Fig. 10 is a plan view of the attachment of the motor of Figure 8 with an annular caulking tool.

Fig. 11 is a plan view in sections of the connection of the motor to the valve block by means of one or more circular Verstemmwerkzeuge;

FIG. 12 is cut out in view of the Verclin of the attachment surfaces with an annular caulking die;

Figure 13 is a plan view of the caulking of a mounting set of the motor, which partially surrounds the side walls of the web.

FIG. 14 excerpts and enlarges the caulking according to FIG. 13;

15 shows the pushing out of a protrusion of the material of the valve block.

. Fig. 16, the caulking of the projection of Figure 15 with an opening in the fastening attachment of the tab or of the engine;

A ver to the valve block braced motor in side view of Fig. 17;

FIG. 18 shows the motor fastening according to FIG. 17 in a direction of view perpendicular to FIG. 17 (rear view);

Fig. 19 is a perspective view of the attachment of the engine of Figures 17 and 18 and the attachment made in an analogous manner two pressure accumulators.

Fig. 20 is the mounting of a gutter in a plastic housing an electronic control unit (ECU) NEN fastening lug by crimping;

FIG. 21 the fastening of the tab corresponding to FIG. 20 by caulking;

Fig. 22 the caulking according to Figure 21 with a amplified th mounting approach, which forms a one-piece plastic unit with the controller housing.

Fig. 23 shows another embodiment of the present invention, in which the attachment is brought into the desired installation position by twisting;

FIG. 24 shows the hydraulic block shown in FIG. 23 with an attached part;

Fig. 25 shows a detail of Fig. 24;

Fig. 26 is a view of a tangential section along the line II-II of Fig. 25;

Fig. 27 is a view of a radial section along the line IV-IV of Fig. 25;

Fig. 28 is a sectional view similar to that of Fig. 26, but for another embodiment;

FIG. 29 shows the exemplary embodiment shown in FIG. 28 in a view according to FIG. 27;

FIG. 30 is a further embodiment of the present invention in a top view;

FIG. 31 shows a detail from FIG. 30 in a sectional side view; FIG. and

FIG. 32 shows the detail from FIG. 30 in a top view.

In connection with FIGS. 1 and 2, a first embodiment of the present invention will be described in the following, FIG. 2 being a sectional view along the line II of FIG. 1. In Figs. 1 and 2 is a section of a hydraulic or valve block 1, and in particular a slip-controlled brake system of a motor driving tool, shown schematically. To attach a component 2 , which can be, for example, a controller housing, a solenoid valve, a memory or a motor for driving a (not shown) hydraulic pump, a tab 3 is preferably formed on the attachment 2 or attached directly to it. The flap 3 has an issue in the Wesent L-shaped cross-section and having an, in we sentlichen by an angle of 90 °, outwards curved, short leg section. 4 In the intended Einbaula ge projecting beyond the outer contour of the attachment 2 section 4 of the tab 3 in a recess, for example as a Boh tion 5 in the valve block 1 is completely dig dig. Here, the curved section 4 lies against the base and / or side surface of the recess 5 . For form-locking fastening of the attachment part 2 at the valve block 1 of the recess 5 is brought material of the valve block 1 through the portion 4 of the tab 3, preferably by means of caulking or clinching to the accessible area of the outer wall. In this case, in the sectional view of 2, the contour of the recess 5 is indicated in front of the caulking 6 of FIG.. The contour of the recess 5 also shown in FIG. 2 after the caulking process is denoted by 6 '.

It should be noted that from the illustration of FIG. 1 he gives that the connection between the valve or hydraulic likblock 1 and the attachment 2 takes place only at a connec tion point. However, this is not restrictive for the present invention, since the invention also provides a plurality of appropriately constructed, individual positive connection points for fastening the attachment part 2 to the valve block 1 as provided by the invention, in particular the fastening takes place on the outer circumference of the Attachment 2 . However, the number of connection points is preferably limited, so that secure attachment with little attachment points or connection points is provided. For example, four connection points can be provided.

In connection with Figs. 3 and 4, a second embodiment of the present invention will be described below. In contrast to the first embodiment described above in connection with FIGS. 1 and 2, according to the second embodiment of the present invention, the bent portion 4 of the tab 3 is perforated. This means that the curved section 4 of the tab 3 has a recess 7 . The recess 5 can be drilled, for example, with a crown milling cutter, which originally leaves a projection 8 with the contour 6 in the center of the bore or recess 5 . The outer diameter of the projection 8 corresponds essentially to the inner diameter of the recess 7 . In a proper position, the curved section 4 of the tab 3 rests against the bottom of the recess 5 , the projection 8 protruding through the recess 7 . As can be seen from Fig. 4, the projection 8 is outside the outer circumference of the attachment part 2 and is therefore easily accessible from the outside for fastening or caulking via the section 4 of the tab 3 . As above, the contour of the projection 8 before the caulking process is designated 6 and the contour after the caulking process is 6 '.

In connection with Figs. 5, 6 and 7, a third and fourth embodiment of the present invention will be explained nä forth. In contrast to the first two exemplary embodiments, the positive connection according to the invention, provided at one or more individual points, is not realized on two adjacent, mutually facing surfaces of hydraulic block 1 and attachment 2 . The third or fourth embodiment is therefore particularly advantageous in the case in which the add-on part 2 extends to an edge 9 of the valve block 1 . For this purpose, the hydraulic or valve block 1 on its side surfaces 10 and 11 , the upper edge of which corresponds to the edge 9 , has substantially identical recesses 5 . In these exemplary embodiments, the two fastenings or two individual connection points are arranged opposite one another and are constructed essentially identically, which is why only one of the two individual connection points is described below.

Fig. 6 shows that the BEFE on the attachment 2 Stigt tab 3 in cross-section sits in something an S-shape be. The tab 3 extends in the installed position along the con ture of the valve block 1 and has a base section 12 , an approximately right-angled section 13 and a fastening section 14 . The base section 12 serves to fasten the tab 3 to the attachment 2 . The bent section 13 serves to support the tab 3 on the upper side 15 of the valve block 1 . The fastening portion 14 , which is formed almost parallel to the base portion 12 , rests on the side surface 11 of the valve block 1 . By appropriate punching or by other suitable methods in the fastening section 14 of the tab 3, a tongue 16 is formed, which is pre-bent to the extent that the tongue 16 has a curvature pointing away from the side 11 of the valve block 1 . To assemble the attachment 2 on the valve block 1 , the tongues 16 are reeved or bent in the recess 5 of the valve block 1 . This is preferably followed by caulking at the upper end of the tongue 16 in FIG. 6. In the fixed position, the tongue is designated by the reference symbol 16 'in FIG. 6.

The fourth embodiment of the present invention, shown schematically in FIG. 7 in conjunction with FIG. 5, differs from the third exemplary embodiment essentially in that, in the intended installation position, the curved section 13 of the tab 3 does not abut the upper side 15 of the valve block . Furthermore, the tongue 16 is already bent inwards before assembly and thus acts as a snap lock or latching hook which snaps into the recess 5 . This locked position is shown in Fig. 7. Due to the special design of the curved portion 13 of the tab 3 , a spring effect is achieved, which can be provided in particular for the purpose of providing tolerance compensation between the valve block 1 and the attachment 2 .

FIGS. 8 and 9 show in side view and enlarged sectional view of a detail of a motor 25 which is mounted on the mounting surface 17 of a valve block 1 and preferably caulked to the latter. For caulking at the connection points 23 are used, for example, four projections 18 protruding from the valve block 1 , which according to a preferred embodiment of the present invention are formed from two originally continuous webs 19 , 20 by a recess 21 made therein. The recess 21 is cut out of the originally continuous Ste gene 19 , 20, for example, by a circular milling tool, which has a diameter which corresponds approximately to the diameter of the cylindrical housing of the motor 25 . But it is not absolutely necessary that the recess 21 is circular. The recess can, with a corresponding design of the milling tool, for example using a crown milling cutter, also be ring-shaped, insofar as the design of the motor 25 with its housing permits a smooth placement on the bottom of the then ring-shaped recess. If you want to ensure a particularly good seal between the engine 25 and the valve block 1 , the recess 21 can also be guided a little way into the valve block 1 or its upper surface 17 (not shown), so that a recess 21 is provided results in a circular or annular side wall, which is adjacent to the circumferential fastening projection 22 of the motor 25 .

In Fig. 10, the connection points 23 according to the invention can be seen in a plan view, which are formed, for example, by caulking by placing an annular caulking tool (see, for example, Fig. 12) on the projections 18 . In the lower part of FIG. 10, the state of the engine 25 and valve block 1 can be seen before the caulking. Here you can also see two openings or recesses 24 on the circumferential fastening attachment 22 , into which material of the valve block 1 is pressed when caulking, which consequently advantageously prevents the motor 25 from rotating relative to the valve block 1 in the plane of the fastening surface 17 .

The hydraulic or valve block 1 is, for example, made of aluminum and preferably in the extrusion process Herge, whereby in an advantageous manner during the Preßvor gangs also extending in the direction of webs 19 , 20 can be formed.

While the connection points 23 are formed according to FIG. 10 by means of an annular caulking tool (see FIG. 12), the individual connection or caulking points 26 were formed in sections in FIG. 11 by means of several circular punches with a small diameter, where at each of the caulking points 26 with a separate stamp or all connection points 26 with several stamps can be formed simultaneously. The contour of the corresponding caulking tool is indicated in Fig. 11 with ge dashed lines. The connection points 26 protrude for fastening the annular mounting set 22 of the housing, for example a motor 25 or another attachment, not shown.

In Fig. 12 is a detail and enlarged a hydraulic lik- or valve block 1 is shown, in the deviations from the embodiments described above in connection with FIGS. 8 to 11, the recess 21 also in the upper surface 17 of the hydraulic or valve block 1 is introduced. This is preferably used to obtain an improved seal between valve block 1 and engine 25 in addition to the pure holding function. The motor 25 with its housing is inserted into the recess 21 and then with an annular caulking tool 28 material of the likewise annular fastening projection 22 of the housing of the motor 25 in the direction of the joint between the bottom 29 and the circumferential side wall of the recess 21 in the form of a clinch - or caulking connection in the aluminum, in particular, material of the valve block 1 , so that a bulge 30 is formed here, which undercuts the wall of the recess 21 and thus seals. The ring-shaped caulking is optional and is only used for better sealing. The attachment of the Mo gate 25 takes place according to the invention as above beschrie ben, wherein the material at the edge of the fins 20 relative to the circumferential attachment lip 22 at one or several individual connecting points is caulked in height of the ridges 20 (as shown for example in Fig. 10 can be seen). It thus maintains a firm and at the same time very tight connection between the housing of the motor 25 and the hydraulic block 1 .

Fig. 13 shows the possibility of ver see the mounting boss 22 of the attachment 2 (z. B. electric motor) with tabs 31 . These tabs 31 preferably have openings or recesses 32 which partially surround the projections 18 . It is in the lower part of Fig. 13 to a stand before the final installation of the fixture 2 to the hydraulic block 1 shown in the upper part of the Vorsprün are ge 18 already caulked to the attachment part 2. The projections 18 , as already described in connection with FIGS. 8 to 10, were created by machining two webs, which were obtained, for example, by an extrusion process in the manufacture of the valve or hydraulic block 1 . By undercut the projections 18 infol ge of the edge of the opening 32 , the attachment 2 is secured against rotation relative to the valve block 1 . The caulking takes place, as already described above in connection with FIG. 11. Details of FIG. 13 are shown enlarged in part in FIG. 14.

FIGS. 15 and 16 show another way, a necessary for the caulking projection 33 from the valve or the hydraulic unit 1 to work out by material of the valve block 1 by providing a bore 34 accordingly weakened and subsequently with a correspondingly stalteten stamp 35 Projection 33 is pressed out in connection with a die, not shown. Subsequently, by means of a round punch 36, the jump 33 is caulked with respect to the edge of the opening 32 with the surrounding wall 22 of an attachment.

Figs. 17 to 19 show in a side, a rear and a perspective view of the hydraulic block 1 with mounted electric motor 25 and with ridges 19, 20, which have been processed by inserting a recess 21 to four upstanding projections 18. According to the method described above, the attachment lug 22 of the motor 25 according to the invention was made on the four individual ones. Connection points 26 caulked to the hydraulic block 1 . Deviating from the previous embodiments, the Ven tilblock 1 is also provided with two pressure accumulators 37 , which can also be connected to the valve block 1 in the manner according to the invention. Arise in FIGS. 17 and 18 nor a mounting according to the invention is also one of the regulator housing 38 to the valve block 1 by means of three webs 40 and made from this six projections shown, from which as already explained above by means of forming operations six separate, form-fitting connection points: 39.

The Fig. 20, 21 and 22 show in an enlarged representation and rotated 180 ° be the possible variants of FIG. 18 known connection between the hydraulic block 1 and Reglerge housing 38 at the right connection shown there item 39. Since, as can be seen from FIG. 20, either a web 40 is flanged in sections or in its entirety around a fastening attachment 42 or is cold formed in another way. Or it is, as can be seen from FIGS. 21 and 22, caulked over the entire web length or only locally, so that the individual caulking or connection points 39 are formed which hold the fastening projection 42 of the controller housing 38 . The fastening attachment 42 can be cast, for example, with the housing 38, which is made of plastic in particular, of an electronic control (ECU), e.g. B. by an injection molding process. In FIG. 22, the attachment lug 42 is formed in one piece against the regulator housing 38 , which then consists of a plastic suitable for attachment.

Figs. 23 to 27 show further embodiments of the present invention with a form-fitting, at one or several individual connecting points provided for connection of the attachment part 2 to the hydraulic block 1,. In this case 25, Fig. An enlarged detail of Fig. 24 (here shown as a circle) while Figures 26 and 27 has a tangential section taken along the line II-II of FIG. 25 and a radial section along the line IV-IV of FIG. . 25 represent.

The hydraulic block 1 consists, as above, preferably of aluminum, two webs 19 , 20 being formed on the hydraulic block 1 in the extrusion process. A inserted in the Ven tiloblock 1 circular recess 21 makes two projections 18 from the two webs 19 , 20 in the manner already described above, the mounting part 2 being inserted into the recess 21 . The attachment 2 has in particular four tabs 31 , which adjoin the inner wall of the inserted recess 21 . The outer region of the inserted recess 21 forms an undercut 50 for the webs 19 , 20 or projections 18 , which has been produced by inserting the groove 52 visible in FIGS . 26 and 27 into the recess 21 . By a comparison of the Fig. 23 with Fig. 24 seen rotation of the attachment 2 , the tabs 31 get under the undercut 50 by being inserted into the groove 52 (see also Fig. 26 or Fig. 27). The tolerance of the height of the groove 52 relative to the thickness of the tabs 31 is preferably chosen such that the tabs 31 jam on the upper wall 53 of the groove 52 , so that the attachment 2 is held firmly on the hydraulic block 1 .

In order to facilitate the threading of the tabs 31 into the undercuts 50 or grooves 52 and to increase the clamping force continuously, the tabs 31 , as can be seen from FIGS. 26 and 28, are preferably hen with wedge-shaped ramps 54 . To prevent unscrewing of the attachment 2 from the connec tion in the manner of a bayonet lock, a snap connection between the tabs 31 and the walls of the groove 52 can also be provided. The width of the ramp 54 only needs to be chosen as large as it dips into the undercut 50 . The ramp 54 can be formed for example by non-cutting shaping.

In Figs. 28 and 29 is a slightly modified depicting the tab 31 and the groove 52 shows ge lung form regard. The tab 52 here shows a bend 55 in its end region, which has a spring action compared to the rest of the tab. With this spring action, the bend 55 rests with its upper side 56 on the upper wall 53 of the groove 52 , which is enlarged compared to FIGS . The tab 31 can in turn have a ramp 54 on its bend 55 , as is shown, for example, in FIG. 28.

In the embodiment according to FIGS . 30 to 32, the component 2 is provided with two enlarged tabs 57 which project radially from the add-on part 2 on the hydraulic block 1 . The hydraulic or valve block 1 has again, as already described above, two webs 19, 20 which are formed on the preferably consisting of aluminum hydraulic block 1, for example by extrusion. Be tenkanten 58 (see Fig. 31) of the enlarged tabs 57 border in the unmounted state on the side walls of the webs 19 , 20 which, as already described above, are divided into four projections 18 by an inserted recess 21 . The connection or caulking points 59 are now set such that the caulked material is tan potential deformed to the inserted recess 21 or the round bottom surface of the attachment 2 . The forces F _N resulting from the caulking thus act radially on the side surfaces 58 of the enlarged tabs 57 . And do not play as with the Ausführungsbei described above, radially on the circumferential lower edge of the attachment part 2 . This largely prevents deformation of the housing of the component 2 , since the caulking forces only act on the housing tab 57 and no longer act on the housing 2 of the attachment 2 itself. This principle is also applicable when using only a single web with two projections and the inserted recess 21 , but also with a corresponding shaping of the tabs 57 with only one web. Here, the web can be attached, for example, laterally offset to the housing of the attachment 2 or the two tabs 57 have a fork-shaped recess, the inner side surfaces of which bear against the outer surfaces of the web. In this case, however, an inserted recess 21 is necessary.

FIG. 31 shows an enlarged section through the hydraulic block 1 at the level of the tab 57 and the connection points 59 , while FIG. 32 shows an enlarged plan view of this area, the enlarged area being shown as a circle in FIG. 30.

The invention was previously explained in more detail with reference to preferred examples. However, it is obvious to a person skilled in the art that different modifications and modifications can be made without departing from the idea on which the invention is based. In particular, the invention also includes a variant in which the attachment 2 "dips" into the valve block 1 and is then caulked. For this purpose, in particular hen that a recess is formed in the valve block 1 , the inner diameter of which corresponds to the outer diameter of the attachment part 1 substantially. Here, the inclusion of the valve block 1 by the immersion depth is accordingly formed thicker.

Claims (28)

1. hydraulic block ( 1 ), in particular valve block for a slip-controlled brake system of a vehicle, to which at least one attachment ( 2 ) is attached in a form-fitting manner, characterized in that the attachment of the attachment ( 2 ) to one or more individual connection points ( 23 , 26 , 39 , 59 ) is provided. 2. Hydraulic block ( 1 ) according to claim 1, characterized in that the attachment ( 2 ) is an electric motor ( 25 ), controller housing ( 38 ), solenoid valve or pressure accumulator ( 37 ). 3. Hydraulic block ( 1 ) according to claim 1 or 2, characterized in that the positive fastening is a caulking or clinching. 4. Hydraulic block ( 1 ) according to one of claims 1 to 3, characterized in that the hydraulic block ( 1 ) we at least has a recess ( 5 ), wherein the component ( 2 ) has at least one protruding hash ( 3 ), and wherein the material of the hydraulic block ( 1 ) adjoining the recess ( 5 ) is caulked to fix the at least one tab ( 3 ). 5. Hydraulic block ( 1 ) according to one of claims 1 to 4, characterized in that the at least one tab ( 3 ) is resiliently fastened in the at least one recess ( 5 ). 6. Hydraulic block ( 1 ) according to claim 4, characterized in that the at least one recess ( 5 ) has a projection ( 8 ), wherein the at least one plate ( 3 ) has a corresponding recess ( 7 ). 7. hydraulic block ( 1 ) according to claim 6, characterized in that in the intended installation position of the projection ( 8 ) through the recess ( 7 ), the projection ( 8 ) via the at least one tab ( 3 ) caulked with this. 8. Hydraulic block (1) claims according to any one of the preceding, characterized in that a surface of the hydraulic block (1) abuts a surface of the attachment part (2), said attachment to another surface (side surface) of the hydraulic block (2) formed is. 9. hydraulic block ( 1 ) according to claim 8, characterized in that the hydraulic block ( 1 ) on the other surface (side surface) has at least one recess ( 5 ), wherein the attachment ( 2 ) has at least one front tab ( 3 ) , wherein a latching hook is formed on the tab ( 3 ), which is latched into the least least one recess ( 5 ). 10. Hydraulic block ( 1 ) according to claim 8, characterized in that the hydraulic block ( 1 ) on the other surface (side surface) has at least one recess ( 5 ), the attachment ( 2 ) having at least one front tab ( 3 ) , and wherein on the tab ( 3 ) a tongue ( 16 ) is formed, which is bent into the recess ( 5 ). 11. Hydraulic block ( 1 ) according to one of claims 1 to 3, characterized in that the attachment ( 2 ) facing surface ( 17 ) of the hydraulic block ( 1 ) with at least one, substantially perpendicular to protruding projection ( 18 ) is provided, to which a preferably radially extending fastening projection ( 22 ) of the housing of the attachment ( 2 ) is sufficient, and that the material adjacent to the projection ( 22 ) of the pre jump ( 18 ) is connected by a caulking and / or clinching connection Attachment ( 2 ) to the hydraulic block ( 1 ). 12. Hydraulic block ( 1 ) according to one of the preceding claims, characterized in that the protruding projection ( 18 ) by one or more parallel webs ( 19 , 20 ) on the attachment ( 2 ) associated surface ( 17 ) of the hydraulic block ( 1 ) is formed. 13. Hydraulic block ( 1 ) according to claim 11 or 12, characterized in that a wall of the projection ( 18 ) facing the fastening projection ( 22 ) is formed by a recess ( 21 ) inserted into the webs ( 19 , 20 ). 14. Hydraulic block ( 1 ) according to one of claims 11 to 13, characterized in that the webs ( 19 , 20 ) made of the same material as the hydraulic block ( 1 ), preferably aluminum, are formed by extrusion. 15. Hydraulic block ( 1 ) according to one of the preceding claims, characterized in that the inserted recess ( 21 ) is formed by non-cutting or machining Be the webs ( 19 , 20 ). 16. Hydraulic block ( 1 ) according to one of claims 11 to 15, characterized in that the fastening projection ( 22 ) or the tab ( 31 ) is provided with at least one recess ( 24 , 32 ) into which the caulking or Clinching process, shifted material of the hydraulic block ( 1 ) is inserted. 17. Hydraulic block ( 1 ) according to one of claims 11 to 16, characterized in that the inserted recess ( 21 ) is substantially circular, the bottom ( 29 ) of this recess ( 21 ) being below the surface plane ( 17 ) from which the at least one web ( 19 , 20 ) protrudes. 18. Hydraulic block ( 1 ) according to claim 16, characterized in that the recess ( 32 ) of the fastening lug ( 22 ), which is preferably designed as a tab, comprises the projection ( 18 ) at least in sections. 19. Hydraulic block ( 1 ) according to one of claims 11 to 18, characterized in that the material from the surface of the attachment ( 2 ) opposite the surface of the hydraulic block ( 1 ) is weakened so far that it is in the form of a projection ( 33 ) can be pressed out of the surface ( 17 ) facing the attachment ( 2 ). 20. Hydraulic block ( 1 ) according to one of the preceding claims, characterized in that the attachment ( 2 , 38 ) has a housing made of plastic and a BEFE stigungsansatz ( 42 ) is connected to the housing by casting or injection molding. 21. Hydraulic block ( 1 ) according to one of claims 11 to 15, characterized in that the projection ( 18 ) with egg ner in the plane of the extension ( 31 ) radially extending undercut ( 52 ) is provided, in which a tab ( 31 ) can be inserted. 22. Hydraulic block ( 1 ) according to claim 21, characterized in that the tab ( 31 ) is provided with a rising in the closing direction Ver ramp ( 54 ). 23. Hydraulic block ( 1 ) according to one of claims 11 to 16, characterized in that the hydraulic block ( 1 ) is provided with at least one web ( 19 , 20 ), that the attachment ( 2 ) is provided with at least one fastening tab ( 31 ) , whose side edge ( 58 ) runs adjacent to the side wall of the web ( 18 , 19 ), and that the tab ( 31 ) is calked with the web ( 18 , 19 ) in such a way that the material to be caulked is perpendicular to the direction of extension of the web ( 19 , 20 ) moves. 24. Hydraulic block ( 1 ) according to claim 23, characterized in that the web ( 19 , 20 ) is divided by an inserted recess ( 21 ) into two projections ( 18 ) that the attachment ( 2 ) with two tabs ( 57 ) ver can be seen, and that the tabs ( 57 ) with the projections ( 18 ) are caulked in such a way that the caulked material ( 60 ) moves transversely to the direction of extension of the web ( 19 , 20 ). 25. Hydraulic block according to claim 24, characterized in that two parallel webs ( 19 , 20 ) are provided and the tab ( 57 ) is braced on both side edges ver. 26. Hydraulic block according to claim 25, characterized in that two webs ( 19 , 20 ) by an inserted recess ( 21 ) are divided into four projections ( 18 ) and that the attachment ( 2 ) with two aligned tabs ( 57 ) is, the four Be tenränder with four projections ( 18 ) are caulked such that the material flow of the caulking is transverse to the direction of extension of the webs ( 19 , 20 ) or tabs ( 57 ). 27. A method for attaching an attachment ( 2 ) to a hydraulic block ( 1 ), preferably a valve block, characterized in that the attachment of the attachment ( 2 ) to the valve block ( 1 ) is form-fitting and points at one or more individual connections ( 23 , 26 , 39 , 59 ) is provided. 28. The method according to claim 27, characterized in that on the attachment ( 2 ) facing surface ( 17 ) at least one perpendicular to this web ( 19 , 20 ) from the material of the hydraulic block ( 1 ) is worked out that the attachment ( 2 ) is placed on the surface ( 17 ) in such a way that an assigned fastening attachment ( 22 ) of the attachment ( 2 ) adjoins the web ( 19 , 20 ) and by non-cutting deformation of the web ( 19 , 20 ) and / or Fastening approach ( 22 ) the attachment part ( 2 ) on the hydraulic block ( 1 ) is held.