DE3245157A1 - BRAKE CALIPER HOUSING, ESPECIALLY FOR A PARTIAL COVER DISC BRAKE OF A MOTOR VEHICLE, AND METHOD FOR PRODUCING THE HOUSING - Google Patents

Description

ALFRED TEVES GMBH. ··. "": - - "; * IJ5r276

Brake caliper housing, in particular for a partially lined disc brake of a motor vehicle and method for manufacturing the housing

The invention relates to a brake caliper housing, in particular for a partially lined disc brake of a motor vehicle, wherein the housing consists of at least two together connected housing parts consists.

Such a brake caliper housing is known from DE-OS 27 10 511. With this caliper housing a first housing part forms a radially extending one Leg which contains a brake cylinder and an axially tangentially extending bridge section. A second housing part forms a second radial one Leg, which is opposite to the first radial leg is arranged. The interface between the two housing parts runs perpendicular to the axis of the brake cylinder. The two are held together Housing parts by means of screw bolts.

The well-known brake caliper housing already has the The advantage resulting from the division into two parts is that the cylinder bore is introduced from the brake disk side can be without the opposite radial leg having a corresponding opening

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got to. As a result of the connection of the housing parts by means of .Screws, however, the known housing cannot be carried out optimally in terms of weight. Also is A radial dismantling of the brake shoes is not possible with this housing.

The invention is therefore based on the object of the known Brake caliper housing to improve that it in terms of weight, space and ease of manufacture is designed more optimally.

This is achieved according to the invention in that the finished machined housing parts are welded together.

With the solution according to the invention, connecting elements, such as bolts that lead to an increase in weight, avoided. Since such fasteners also require space, the solution according to the invention is also more favorable in this regard. Finally is too the production and assembly is facilitated, especially in the case of housings that allow a radial change of the lining, no broaching required. Holes in the outer radial housing leg do not need to be provided, whereby the rigidity is not impaired.

According to an advantageous embodiment of the invention, that of a housing with a first radial housing leg, the one with a cylinder bore for receiving a piston is provided, a second radial housing leg and a bridge part connecting the radial housing legs extends, it is provided that the welded joint at the transition point from

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Bridge part to the first, containing the cylinder bore , Housing legs is provided. The Welded connection is also provided at the transition point from the bridge part to the second radial housing leg be. In both cases, the to be connected Housing parts butting surfaces provided that are perpendicular to the Run longitudinal axis of the housing. In the second case, the housing parts connected to one another can also have abutment surfaces have, which run parallel to the longitudinal axis of the housing.

Another solution according to the invention is based on the fact that an axial cylinder bore provided in a first radial housing leg is designed continuously and is closed by means of a cover and provides that this cover is welded to the radial housing leg is. An advantageous embodiment of this solution is that the cylinder bore on its inner, from the end remote from the bridge part has a radial expansion that in the expansion of the cover used and that the weld seam the circumferential surface of the Connects the lid to the inner peripheral surface of the extension, wherein the weld seam axially abuts on material of the housing surrounding the cylinder bore.

An embodiment in which the cover is on the end face of the cylinder housing part is also expedient placed and that the weld seam on the circumference of this cylinder housing part is arranged. The cover advantageously has an outer, axially extending one The edge and the geometry surrounding the cylinder bore

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housing part has an annular recess into which the .Deckelrand engages so that perpendicular to the cylinder longitudinal axis running abutment surfaces are formed which are connected by means of a weld seam.

Further advantageous refinements consist in that the housing parts connected to one another consist of different Materials. In particular, the housing part containing the cylinder advantageously consists of Ductile iron, cast aluminum, die-cast aluminum or forged aluminum. The one containing the bridge part Housing part is advantageously made of ductile iron, forged steel, cast aluminum, forged Aluminum or die-cast aluminum. Combinations of these materials can be selected with advantage in individual cases will.

The invention also provides a method of manufacture a brake caliper housing, which is characterized in that the finished housing parts are welded together.

The method according to the invention results in significant advantages in the manufacture of the brake caliper housing. These consist in particular of a simplified one Manufacture and in better properties of the housing / as they have already been set out above.

Advantageous embodiments of the method according to the invention provide that the production of the weld connection by means of electron beam welding or laser beam welding he follows.

ALFRED TEVES GMBH . "."'" - _: -; P..5276

• The housing parts to be connected are expediently with
Provide abutting surfaces that are perpendicular or parallel to the
Run longitudinal axis of the housing.

Another advantageous solution includes a method in which the cylinder cover is also welded into the cylinder bore.

The cylinder bore is initially widened at its inner end, and the cover is then inserted into the widening. set and the weld on the inner face
made of the cylinder housing part.

In another embodiment of the method, the
The cover is also placed on the end face of the cylinder housing part and the welding is carried out on the circumference of the cylinder housing part.

The housing parts are advantageous from different Materials.

Refinements of the invention and their advantageous
Refinements are shown in the drawing and described below.

Show it:

1 shows a front view of a partially lined disc brake;

FIG. 2 shows a plan view of the partially lined disc brake of FIG. 1;

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3 shows a section through the partially lined disc brake along line A-A of Figure 1;

FIG. 4 shows a partial section through the partially lined disc brake along the line B-B in FIG. 1; FIG.

5 shows a front view of the housing of the partially lined disc brake illustrated in FIGS. 1 to 4;

Fig. 6 is a partially sectioned plan view of the Housing of the partially lined disc brake according to FIG. 5;

7 shows a longitudinal section through a schematically illustrated housing of a partially lined disc brake;

Fig. 8 is a plan view of the housing of Fig. 7;

9 shows another embodiment of the housing of a Partially lined disc brake in longitudinal section;

10 shows a partial view of a closed by means of a cover Cylinder in section;

11 shows another embodiment of a cylinder with Lid closure;

Fig.12 shows a further embodiment of a cylinder, the is closed by means of a lid.

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13 shows a third embodiment of a means of cover closed cylinder,

14 shows a fourth embodiment of a cover by means of a cover closed cylinder,

15 shows a further embodiment of a brake caliper housing on average.

Reference is first made to FIGS. 1 to 6, which show a complete partially lined disc brake in which the solutions according to the invention are implemented.

The partially lined disc brake shown in FIGS. 1 to 6 is intended for installation in a motor vehicle. It has a brake carrier 2, which by means of fastening eyes 4.6 on a steering knuckle, the. axis or another component of the wheel suspension of the motor vehicle can be screwed laterally next to a brake disc 8 is. The brake carrier 2 forms two tangentially spaced apart substantially in a V configuration Brake carrier arms 10, 12, which have bores 14, 16 at their radially outer ends. The hole 14 in the brake carrier arm 10 is arranged in an axially extending extension 18 at the outer end of the brake carrier arm 2. It receives a guide pin 22 attached to a brake caliper 20 so as to be axially displaceable, as further below is described in more detail. In the bore 16 of the brake carrier arm 12 is an axially extending guide pin 24 attached, which is arranged axially displaceably in an axially aligned bore 26 in the brake caliper 20 is, as will also be explained in more detail below.

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tert is.

The brake caliper 20 is essentially cup-shaped formed and has a first radially extending leg 28 which forms a brake cylinder 30, which a brake piston (not shown) receives. A substantially closes on the leg 28 in the axial and circumferential direction extending bridge part 34 which engages over the brake disc 8. On the other On the side of the bridge part 34, this merges into a further radially extending leg 36. On the side next to the brake cylinder 30 an axially extending bore 38 is provided in the leg 28, in which the also axially extending guide pin 22 is attached. The guide pin 22 engages with his free end protruding from the bore 38, as already indicated above, into the bore 14 of the brake carrier arm 10 and is axially displaceable therein. The coordination of the diameter of the guide pin 22 and the hole 14 is made so that the guide pin 22 forms a fixed bearing with the bore 14. The im Brake carrier arm 10 fixed guide pin 24 penetrates with its free end a hole 40, which on the other side of the brake cylinder 30 is provided in the brake caliper 20. The guide pin 24 has a smaller diameter than the bore 16, so that between the guide pin 22 and the bore annular gap 42 is formed and the Guide pin 24 is movable radially and tangentially in the space. To dampen these movements is in the Bore 40 in the brake caliper 20, an elastic sleeve 44 is used, which consists for example of rubber. the

ALFRED TEVES GMBH

The elastic sleeve 44 is essentially cylindrical in shape and has an annular one on its outer circumference Approach 46, which sits in a correspondingly formed annular groove 48 in the bore 16, whereby the elastic sleeve 44 of the bore 40 is held.

Due to the described arrangement of the guide pin 22, the guide pin 24 and the associated bores the brake caliper 20 is mounted axially displaceably on the brake carrier 2, wherein, as already indicated above, the Guide pin 22 with the bore 38 and a fixed bearing the guide pin 24 forms a floating bearing with the bore 40.

In the brake carrier 2, a shaft 50 is formed which forms two mutually parallel, spaced contact surfaces 52,54 in the circumferential direction, between an inner brake shoe 56 with its back plate 58 is guided. A corresponding shaft 60 is on the opposite side of the brake disc 8 in the Leg 36 of the brake caliper 20 is formed. This shaft 60 also has two contact surfaces 62, 64 between an outer brake shoe 66 with its back plate 68 is arranged. In the bridge part 34 of the brake caliper 20 is a substantially rectangular shape through opening 70 is provided, which allows access to the brake shoes 56,66. Through this opening 70 the brake shoes 56,66 can easily be inserted into their shafts 50, 60 or out of these shafts into can be taken in the radial direction.

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To secure the brake shoes 56, 66 have their back plates 58/68 on both sides continuous elongated openings, of which in FIG. 2 only one opening 72 and 74, respectively. Axially extending lining retaining pins are through these openings 72, 74 76.78 led. The lining retaining pins 76,78 sit in opposite directions Bores 80, 82 in the brake caliper 20. The pad retaining pins 76, 78 are secured by means of a deformable one attached to its inner end barrel-shaped element 84 with which the pad retaining pin 76 is clamped in the bore 80. In addition, pad retaining springs 86,88 are provided, which have an im have a substantial H-shape and extend parallel to the brake shoes 56,66. That of the brake disc 8 facing legs 90,92,94,96 of the pad retaining springs are longer than those of the Legs 98,100,102 and 104 facing away from the brake disc and engage under the pad retaining pins 76,78. Middle bars 106,108 of the pad retaining springs 86,88 are on the upper sides the back plates 58,68 and the shorter legs 98,100,102 and 104 are on the backs of the Back plates 58.68.

The guide pin 22 has a fastening part 110 and a guide part 112. The fastening part 110 sits in the bore 40 in the brake caliper 20 and is with welded to this. The weld seam is produced using an electron beam welding process, which connects the contacting surfaces of the guide pin 22 and the bore 40 to one another. in the Fastening part 110 is for reasons of weight saving

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A central recess 114 is provided which is closed by means of a plastic stopper 116. The transition from the fastening part 110 to the guide part 112 has a rounding 118 in order to avoid notch stresses. In the guide part has an annular groove 120 is provided which receives the inner end of a rubber sleeve 122, the ^mi: t its outer end 124 by a ring 126 on a circular ümfangsflache the axial projection 18 is attached. The guide part 112 has a helical oil groove 128.

As can be seen in particular from FIGS. 6 and 9, the brake cylinder 30 has a continuous cylinder bore 130, which is opened by means of a cylinder cover 132 is locked. The cylinder cover sits in an extension 134 of the cylinder bore and rests against it a shoulder 136 formed between the actual cylinder bore 130 and the extension 134. The connection of the cylinder cover 132 with the brake cylinder is produced by means of electron beam welding, this welded joint S-S being the circumferential surface of the Cylinder cover 132 connects to the inner surface of the extension 134, so that a circumferential circular Weld 138 results.

Further configurations of the connection of a cylinder cover to the housing emerge from FIGS. 10 and 11. In configuration ¹ of FIG. 10, the cylinder bore 142 is not designed in a stepped manner. For this purpose, the cylinder cover 140 has a shoulder 144 extending into the interior of the cylinder bore 142. Between this approach 144 and the outer part of the cylinder cover

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140 thereby a circumferential shoulder 146 is formed and the cylinder cover 140 rests with its radially protruding edge 148 on the one delimiting the cylinder bore 142 Face 150 on. In this arrangement, the weld 152 runs perpendicular to the cylinder axis between of the end face 150 and the edge 148 of the cylinder cover 140.

In the embodiment shown in FIG. 11, the Cylinder cover 154 has a collar 156 on the outside, which is in a circumferential recess 158 of the .Zylinderbohrung 160 having part sits. The end face 162 of the part surrounding the cylinder bore 160 is stepped as a result and the weld seam 162 runs perpendicular to the cylinder axis in the area of the end face 164 of the collar 156 and the corresponding part of the end face 166.

The embodiment shown in FIG. 12 has a cylinder cover 168 which, completely in a cylinder bore 170 is used. The weld 172 here runs parallel to the axis of the cylinder bore between the circumferential surface of the cover 168 and the inner surface of the cylinder bore 170. To avoid that If a crater forms on the inside during electron beam welding, the weld to be made on the outside is not executed continuously, rather its depth is less than the depth of the cover 168. The cylinder cover 168 has a recess 174 to reduce weight.

The cover 168 is seated in the cylinder bore 170 by means of a press fit.

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tuell be executed. To the lid 168 with a press fit in To introduce the cylinder bore, a slip bevel 169 is provided on the inner edge of the cover 168.

A third embodiment of a closed by means of cover 216 13 shows the cylinder 218. The end wall 220 as well as the cover 216 are stepped here. Between the outer part of the lid 216 of smaller diameter and the corresponding outer part the end wall 220 is provided with a weld connection 222. Since the forces generated by braking inside the The pressure built up in the cylinder 218 is absorbed by the step 224, the welded connection has here essentially only sealing function,

A fourth embodiment is shown in FIG. In this variant, the end wall is 226 of the cylinder 228 is further closed, so that the diameter of the cover 230 is smaller. Between the circumferential surface of the Cover 230 and the inner wall of the bore that receives the cover 230 is in turn a weld 232 intended. The cover sits with a press fit in the bore and the weld seam depth is less than the cover depth. Due to the relatively small diameter of the Cover 230 results in a low load on the connection between cover 230 and end wall 226.

In Figs. 7 and 8, a brake caliper housing is schematically 20 shown. This caliper housing 20 corresponds in principle the brake caliper housing previously described in connection with FIGS. 1 to 6 and 9 to 11;

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7 and 8 serve in particular to the division, the brake caliper housing and the position of the welds better to demonstrate.

As already described above, the brake caliper housing 20 has first and second radial legs 28, 36, which are connected by means of a bridge part 34. In the embodiment shown here the leg 28, which contains the brake cylinder 30, forms a first housing part 188, while the bridge part 34 and the second radial leg 36 represent a second housing part 190. On the bridge part 34 pointing At the end of the first housing part 188, the latter has an abutment surface running perpendicular to the cylinder axis 192, and the second housing part 190 forms at the end of the bridge part facing the brake cylinder 30 34 a corresponding abutment surface 194. The abutting surfaces 192, 194 are by means of a weld seam 196 connected, which is made by means of electron or laser beam welding.

In another embodiment, a weld seam runs 198 between the end of the bridge part 34 facing the leg 36 and the leg 36. This weld seam 198 is indicated in FIGS. 7 and 8 by means of a zigzag line. Another alternative is to use a To place the weld seam 200 parallel to the cylinder axis, as also indicated in FIG. 7 with a zigzag line is.

The housing parts 188, 190 can consist of various materials. In particular, for the housing

ALFRED TEVES GMBH ~ ": '". ^: "· _ ^:. ". * - 5276

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seteil 188 ductile iron, cast aluminum, forged aluminum and die-cast aluminum are useful, while for the Housing part 190 ductile iron, forged steel, cast aluminum, forged aluminum and die-cast aluminum with Benefit come into play. There are various combinations of these in special applications Materials in question.

When manufacturing the caliper housing, the Housing parts 188, 190 finished before welding. That is, the housing part 188 with the cylinder bore 130 and grooves 202 and 204 for receiving seals and sleeves. Unless the cylinder bore 130, 142, 160 is carried out continuously, as is shown in FIGS. 7 to 11 also the contact surfaces for the cylinder cover in this Process stage already finished. The housing part 190 also goes through all for its finishing After the housing parts 188, 190 have been completed, they are connected by means of electron or laser beam welding. The welding of the cylinder cover can take place before or after the welding of the housing legs take place.

Fig. 15 shows an embodiment of a brake caliper housing 234 in which the radial housing parts 236, 238 and the bridge part 240 are made in one piece. In the outer radial housing part 228 is a continuous, im Cross-section U-shaped recess 242 provided through which the cylinder bore 244 can be introduced. A pressure plate 246 is inserted into the recess 242, whose outer contour is at least the contour of the recess

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is partially adapted. Pressure plate 246 and radial housing part 238 are welded to one another by means of electron beam or laser welding or other suitable welding processes welded. This configuration results in a particularly simple manufacturing method. By the subsequent welding in of the pressure plate 246 results in a covering system for a (not shown) outer brake pad and an increase in the rigidity of the housing.

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List of reference symbols

2 B rents carriers

4 fastening eyes

6 mounting eye

8 brake disc

10 brake carrier arm

12 Brake carrier arm

14 hole

16 hole

18 axial approach

20 caliper

22 guide pins

24 guide pin

26 bore

28 legs

30 brake cylinders

32 -

34 part of the bridge

36 legs

38 bore

40 bore

42 space

44 elastic sleeve

46 ring-shaped attachment

48 annular groove

50 bay

52 contact surface

54 contact surface

56 inner brake shoe

58 back plate

60 bay

62 contact surface

64 contact surface

66 outer brake shoe

68 back plate

70 opening

72 opening

74 opening

76 pad retaining pins

78 Pad retaining pin

80 bore

82 bore

84 barrel-shaped element

86 Pad retaining spring

88 Pad retaining spring

90 legs

92 legs

ORIGINAL

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94 legs 96 legs 98 legs 100 legs 102 legs 104 legs 106 Middle bar 108 Middle bar 110 Fastening part 112 Guide part 114 Central recess 116 Plastic plug 118 Rounding 120 ring groove 122 rubber sleeve 124 outer end 126 ring

128 lubrication groove 130 cylinder bore 132 cylinder cover 134 extension 136 shoulder 138 weld seam 140 cylinder cover 142 cylinder bore 144 shoulder 146 paragraph 148 margin

150 end face 152 weld seam 154 cylinder cover 156 collar

158 recess 160 cylinder bore 162 weld seam 164 end face 166 face

168 cylinder cover

169 slip bevel

170 cylinder bore 172 weld seam 174 recess 188 housing part 190 housing part 192 abutment surface 194 abutment surface 196 weld seam 198 weld seam 200 weld seam 202 groove
204 groove

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216 cover 218 cylinder 220 end wall 222 welded joint 224 Steps 226 Front wall 228 Cylinder 230 Cover 232 Weld seam 234 Brake caliper housing 236 radial housing part 238 radial housing part 240 bridge part 242 recess 244 cylinder bore 246 pressure plate

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Claims (29)

ALFRED TEVES GMBH October 25, 1982 Frankfurt am Main ZL / Gr / ro 0305P P 527 6 J. Burgdorf -102 R. Thiel - 19th Claims ( IJ brake caliper housing, in particular for a partially lined disc brake of a motor vehicle, whereby the housing consists of at least two interconnected housing parts, thereby marked that the finished machined Housing parts (188,190) are welded together. 2. The caliper housing of claim 1, wherein the housing has a first radial housing part which is provided with a cylinder bore for receiving a piston is provided, furthermore a second radial housing leg and one connecting the radial housing legs Bridge part, thereby characterized in that the welded joint at the transition point from the bridge part (34) the first housing leg (28) containing the cylinder bore (30) is provided. 3. The caliper housing according to claim 1, wherein the housing having a first radial housing leg with a cylinder bore for receiving a Piston is provided, furthermore a second radial housing leg and a radial housing leg ALFRED TEVES GMBH. "·. '*" - · - "*: ■ .. ·' V 5276 .connecting bridge part / characterized in that the welded connection provided at the transition point from the bridge part (34) to the second radial housing leg (36) is, 4. Brake caliper housing according to one of claims 2 or 3, characterized in that the housing parts to be connected (188, 190) abutment surfaces (192/194) which are perpendicular to the longitudinal axis of the housing. 5. brake caliper housing according to claim 3, characterized characterized in that the interconnected housing parts (188,190) have abutting surfaces, which run parallel to the longitudinal axis of the housing. 6. Brake caliper housing, in particular according to one of the preceding claims, wherein one in a first radial housing legs provided axial cylinder bore carried out continuously and by means of a Lid is closed, characterized in that the lid (132,140,144) is welded to the radial housing leg (28). · 7. Brake caliper housing according to claim 6, characterized in that the cylinder bore (130) has a radial extension (134) at its inner end remote from the bridge part (34), that in the extension (134) the cover (130) ORIGINAL BATHROOM - ALFRED TEVES GMBH : '";".' Ί ' - "-", ".P 5276 - 3 - inserted and that the weld seam (138) the peripheral surface of the cover with the inner peripheral surface the extension connects, the weld seam axially onto the cylinder bore (130) surrounding material of the housing. 8. Brake caliper housing according to claim 6, characterized in that the cover (140) placed on the end face of the housing leg (28) and that the weld seam (152) on the circumference of the the cylinder forming part of the housing leg (28) is arranged. 9. brake caliper housing according to claim 8, characterized characterized in that the cover has an outer, axially extending collar (156) and that the housing leg surrounding the cylinder bore (160) has an annular recess on the outside (158), in which the cover collar (156) engages, so that extending perpendicular to the cylinder longitudinal axis Butt surfaces are formed which are connected by means of a weld seam (162). 10. Brake caliper housing according to claim 8, characterized in that the cover has a has inner extending into the cylinder bore and adapted to this shoulder (144). 11. Brake caliper housing according to claim 6, characterized in that the cover is completely is inserted into the cylinder bore and that the weld seam is parallel to the axis of the cylinder ALFRED TEVES GMBH. · *. * "*: - _: · _: · ..""P 5276 hole between the peripheral surface of the cover and the inner surface of the cylinder, the depth the weld seam is less than the depth of the lid at its edge. 12. Brake caliper housing according to one of the preceding claims, characterized in that the housing parts (188,190) from different Materials. 13. Brake caliper housing according to claim 12, characterized in that the cylinder containing housing legs (28) made of nodular cast iron, cast aluminum, die-cast aluminum or forged Made of aluminum. 14. Brake caliper housing according to one of the preceding claims, characterized in that the housing part containing the bridge part (34) made of nodular cast iron, forged steel, cast aluminum, forged aluminum or die-cast aluminum. 15. Process for the production of a brake caliper housing, in particular for a partially lined floating caliper brake of motor vehicles, at least two of which are the housing forming housing clusters are manufactured as raw parts and essentially finished, characterized in that the finished housing legs are welded together will. BATH ORIGINAL ALFRED TEVES GMBH - "* ·" "* -; -; - .." ■ P 5276 16. The method according to claim 15 / characterized in that the production the welded joint is carried out by means of electron beam welding. 17. The method according to claim 15, characterized in that the production the weld is made by means of laser welding. 18. The method according to any one of claims 15 to 17, wherein the housing has a first radial housing lug which is provided with a cylinder bore for receiving it a piston is provided, furthermore a second radial housing lug and a radial housing lug connecting bridge part, characterized in that the welded connection at the transition point from the bridge part to the. first, the cylinder bore containing the housing leg is made. 19. The method according to any one of claims 15 to 17, wherein the housing has a first radial housing lug which is provided with a cylinder bore for receiving a piston, and also a second radial Gehausebauschkel and a the radial Ge. The bridge part connecting the house flank, thereby characterized in that the welded joint at the transition point from the bridge part to second radial housing leg is made. ALFRED TEVES GMBH. · *. '* ·: - * - - * "; -1« - "Έ 5276 20. The method according to any one of claims 18 or 19 / characterized in that the to connecting housing legs are provided with abutment surfaces that are perpendicular to the longitudinal axis of the housing get lost. 21. The method according to claim 19, characterized in that the to be connected Housing legs are provided with abutting surfaces that run parallel to the longitudinal axis of the housing. 22. The method, in particular according to one of claims 15 to 21, wherein one in a first radial housing leg provided axial cylinder bore carried out continuously and closed by means of a cover is, characterized in that the cover is welded to the radial housing leg will. 23. The method according to claim 21, characterized in that the cylinder bore is extended at its inner end that inserted into the extension of the lid and that the Welding is made on the inner face of the cylinder housing leg. 24. The method according to claim 22, characterized in that the cover is on the end face of the cylinder housing leg placed and that the weld on the circumference of the cylinder housing leg is made. BATH ORIGINAL ALFRED TEVES GMBH .--. "**: - '- / - *" - · * £ 5276 25. The method according to any one of the preceding claims, characterized in that the housing legs are made of different materials. 26. Brake caliper housing according to one of claims 1 to 14, wherein the cylinder bore by means of a cover is locked, thereby characterized in that the cover (.168) is seated with a press fit in the cylinder bore (170). 27. Brein saddle housing according to claim 26, characterized characterized in that the cover (168) has a slip bevel (169) on the inner edge. 28. Brake caliper housing according to one of claims 6 to 14, 26, 27, characterized in that that the weld is carried out as a point weld is. 29. Brake caliper housing according to one of claims 2 to or 25 to 28, thereby characterized in that the outer radial housing part (238) has an axially continuous recess (242), in die.eine pressure plate (246) is inserted, which is welded to the housing part is.