Disc brake caliper body for vehicle

Abstract

The brake caliper body is selectively assembled with either of the opposite-side brake caliper half body of a radially mounted vehicle body or the opposite-side brake caliper half body of an axially mounted vehicle body on the vehicle body side brake caliper half body, wherein the vehicle body side brake caliper half body (5), the opposite-side brake caliper half body of the radially mounted vehicle body (6), and the opposite-side brake caliper half body of the axially mounted vehicle body each form a working fluid introduction hole for introducing working fluid into a cylinder hole from a joint surface toward a bottom side of the cylinder hole, the introduction hole formed in the opposite-side brake caliper half body of the radially mounted vehicle body (6) and the introduction hole formed in the opposite-side brake caliper half body of the axially mounted vehicle body each communicate with the introduction hole formed in the vehicle body side brake caliper half body (5) at the joint surface, and either of the opposite-side brake caliper half body of the radially mounted vehicle body (6) or the opposite-side brake caliper half body of the axially mounted vehicle body is selectively assembled with the vehicle body side brake caliper half body (5) via the respective joint surface.

Description

[0001] This application is a divisional application of the invention patent application filed on December 13, 2021, with application number 202180085483.8 and invention title "Brake Caliper Body for Disc Brakes for Vehicles". Technical Field

[0002] The present invention relates to brake caliper bodies for disc brakes for vehicles, and more specifically, to a split type brake caliper body formed by connecting a pair of brake caliper halves arranged on both sides of a disc rotor using a bridging portion. Background Technology

[0003] Conventionally, a split-type brake caliper body, formed by connecting a pair of brake caliper halves arranged on both sides of a disc rotor using a bridging section, has the following configuration: a radially mounted body mounting portion on the brake caliper halves arranged on the opposite side of the disc rotor from the vehicle body, the radially mounted body mounting portion having through holes for body mounting bolts in the disc radius direction (for example, see Patent Document 1); and an axially mounted body mounting portion on the brake caliper halves arranged on the opposite side of the disc rotor from the vehicle body, the axially mounted body mounting portion having through holes for body mounting bolts in the disc axis direction (for example, see Patent Document 2).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 7-12149

[0007] Patent Document 2: Japanese Patent No. 4212185 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] As shown in the aforementioned patent documents 1 and 2, for example, even if the brake caliper halves on the vehicle body are of the same shape, brake caliper bodies of different mounting types to the vehicle body are designed and manufactured.

[0010] Therefore, the object of the present invention is to provide a brake caliper body for a vehicle disc brake, wherein either a radially mounted vehicle-side brake caliper half having a radially mounted vehicle mounting portion or an axially mounted vehicle-side brake caliper half having an axially mounted vehicle mounting portion can be selectively assembled onto the vehicle-side brake caliper half.

[0011] Technical solutions for solving the problem

[0012] To achieve the above objectives, the brake caliper body of the vehicle disc brake of the present invention, relative to the vehicle-side brake caliper half disposed on the vehicle side of the disc rotor, is selectively assembled on the opposite side of the vehicle body of the disc rotor by either a radially mounted vehicle-side brake caliper half having a radially mounted vehicle mounting portion or an axially mounted vehicle-side brake caliper half having an axially mounted vehicle mounting portion, by engaging their respective mating surfaces and fastening them with connecting bolts. The present invention is characterized in that the vehicle-side brake caliper half, the radially mounted vehicle-side brake caliper half, and the axially mounted vehicle-side brake caliper half each have an inlet hole for introducing working fluid into the cylinder bore formed from the mating surface toward the bottom side of the cylinder bore. The inlet holes formed in the radially mounted vehicle-side brake caliper half and the axially mounted vehicle-side brake caliper half are respectively connected to the inlet holes formed in the vehicle-side brake caliper half at the mating surface.

[0013] Additionally, preferably, the radially mounted vehicle body opposite-side caliper half and the axially mounted vehicle body opposite-side brake caliper half have a sealing groove provided on the outer periphery of the opening of the inlet hole that opens on the mating surface, a connecting hole for introducing working fluid into the inlet hole or a vent hole for venting gas from the working fluid, and an internal threaded hole for tightening the connecting bolt.

[0014] Invention Effects

[0015] According to the present invention, in the brake caliper body of a vehicle disc brake, the vehicle-side brake caliper half, the radially mounted vehicle-side brake caliper half, and the axially mounted vehicle-side brake caliper half each have inlet holes for introducing working fluid into the cylinder bore from the mating surface of the brake caliper half toward the bottom side of the cylinder bore. The inlet holes formed in the radially mounted vehicle-side brake caliper half and the axially mounted vehicle-side brake caliper half are respectively formed by communicating with the inlet holes formed in the vehicle-side brake caliper half at the mating surface. Therefore, even if either the radially mounted vehicle-side brake caliper half or the axially mounted vehicle-side brake caliper half is joined to the vehicle-side brake caliper half, the inlet holes are connected, allowing working fluid to be supplied to each cylinder bore. Thus, since either the radially mounted vehicle-side brake caliper half or the axially mounted vehicle-side brake caliper half can be selectively assembled onto the vehicle-side brake caliper half, even brake caliper bodies with different mounting types installed on the vehicle body can use the same vehicle-side brake caliper half, thereby reducing costs.

[0016] Furthermore, the radially mounted vehicle-side brake caliper half and the axially mounted vehicle-side brake caliper half have: a sealing groove provided on the outer periphery of the opening of the inlet hole that opens at the mating surface; either a connecting hole for introducing working fluid into the inlet hole or a vent hole for venting gas from the working fluid; and an internally threaded hole for fastening the connecting bolt, thereby enabling the vehicle-side brake caliper half to be shaped as simply as possible, and further reducing costs. Attached Figure Description

[0017] Figure 1 This is a front view of a vehicle disc brake according to an embodiment of the present invention, which uses a radially mounted brake caliper half on the opposite side of the vehicle body.

[0018] Figure 2 This is a rear view of the same vehicle with disc brakes.

[0019] Figure 3 This is a top view of the same vehicle using disc brakes.

[0020] Figure 4 This is a side view of the same vehicle with disc brakes.

[0021] Figure 5 yes Figure 4 VV cross-section diagram.

[0022] Figure 6 yes Figure 1 Section VI-VI.

[0023] Figure 7 yes Figure 2 Section VII-VII.

[0024] Figure 8 This is a front view of the main part showing the connection bolts and hollow hose connector installed in the connection hole.

[0025] Figure 9 This is a side view showing the connection bolts and hollow hose connector installed in the connection hole.

[0026] Figure 10 yes Figure 8 XX cross-sectional view.

[0027] Figure 11 This is a front view of the brake caliper body of the first embodiment of the present invention.

[0028] Figure 12 This is a rear view of the brake caliper half on the opposite side of the vehicle body.

[0029] Figure 13 yes Figure 11 Section XIII-XIII.

[0030] Figure 14 This is a front view of the brake caliper on the side of the vehicle body.

[0031] Figure 15 This is a rear view of the brake caliper half on the side of the vehicle body.

[0032] Figure 16 yes Figure 15 XVI-XVI cross-sectional view.

[0033] Figure 17 This is a front view of a vehicle disc brake that uses a brake caliper body with a radially mounted brake caliper half on the opposite side of the vehicle body replaced by an axially mounted brake caliper half on the opposite side of the vehicle body.

[0034] Figure 18 This is a side view of the same vehicle with disc brakes. Detailed Implementation

[0035] Figures 1 to 18 This is a diagram illustrating one embodiment of the disc brake for vehicles according to the present invention. Figures 1 to 16 This indicates a vehicle disc brake that uses a radially mounted brake caliper half on the opposite side of the vehicle body. Figure 17 and Figure 18 This indicates a vehicle disc brake that uses a brake caliper body with a brake caliper body that is axially mounted on the opposite side of the vehicle body, replacing the radially mounted brake caliper half on the opposite side of the vehicle body. Additionally, arrow A indicates the direction of rotation of the disc rotor, which rotates integrally with the wheel when the vehicle is moving forward. The terms "disc out" and "disc in" mentioned below refer to the direction of vehicle movement.

[0036] like Figures 1 to 16 As shown, the vehicle disc brake 1 consists of a disc rotor 2 that rotates integrally with a wheel (not shown) in the direction of arrow A, a brake caliper 3 mounted on one side of the disc rotor 2 on the vehicle body, and a pair of friction pads 4, 4 disposed opposite each other inside the brake caliper 3 with the disc rotor 2 in between.

[0037] The brake caliper body 3 is formed by two connecting bolts 7, 7 integrally connecting the vehicle side brake caliper half 5, which is divided by the bridge part 3a spanning the outer periphery of the disc rotor 2, and the radially mounted vehicle opposite side brake caliper half 6.

[0038] The vehicle-side brake caliper half 5 has: an actuating part 5b having cylinder bores 5a, 5a arranged side-by-side in the circumferential direction of the disc; and a bridging half 5c that constitutes approximately half of the bridging half 3a. The radially mounted vehicle-side brake caliper half 6, similar to the vehicle-side brake caliper half 5, also has: an actuating part 6b having cylinder bores 6a, 6a arranged side-by-side in the circumferential direction of the disc; and a bridging half 6c that constitutes approximately half of the bridging half 3a. Furthermore, the length of the bridging half 6c in the disc axis direction of the radially mounted vehicle-side brake caliper half 6 is longer than the length of the bridging half 5c in the disc axis direction of the vehicle-side brake caliper half 5. When the brake caliper body 3, formed by joining the bridging half 5c and 6c together, is assembled onto the vehicle body, the mating surface 8 is formed further towards the vehicle side than the width direction center CL1 of the disc rotor 2.

[0039] The brake caliper half 5 on the vehicle body side has pistons 9 and 9 inserted into cylinder bores 5a and 5a. Hydraulic chambers 10 and 10 for introducing working fluid are divided between the bottom of the cylinder bores 5a and 5a and the pistons 9 and 9. Furthermore, a first working fluid inlet hole 11 (the inlet hole of the present invention) is provided through the dividing surface of the mating surface 8 on the rotating side of the bridging half 5c toward the hydraulic chamber 10 of the rotating side cylinder bore 5a. At the bottom of the rotating side cylinder bore 5a, there is a first contouring section 5d, which connects the rotating side hydraulic chamber 10 and the first working fluid inlet hole 11 through contouring; and a second contouring section 5e, which performs contouring toward the rotating side hydraulic chamber 10. Furthermore, a third contour processing section 5f is formed at the bottom of the cylinder bore 5a on the disc-in side, which is contoured towards the second contour processing section 5e. By connecting the second contour section 5e and the third contour processing section 5f, the first working fluid inlet hole 11, the hydraulic chamber 10 on the disc-out side, and the hydraulic chamber 10 on the disc-in side are connected.

[0040] Additionally, a vent hole 12 is provided on the disc-rotating side of the bridging half 5c, at the outer end in the disc radius direction, with an opening on the outer end face 5g in the disc radius direction and communicating with the first working fluid inlet hole 11. The vent hole 12 has an internal thread portion 12a formed on the opening side for screwing in the vent screw 13, and a mounting surface 5h for the vent screw 13 is formed on the outer end face 5g in the disc radius direction on the outer periphery of the opening. The vent screw 13 has a gas discharge hole on its inner periphery, an external thread portion 13a on its outer periphery for screwing in the internal thread portion 12a, and a rubber vent cap 13b covering its front end head.

[0041] The radially mounted brake caliper half 6 on the opposite side of the vehicle body is similar to the brake caliper half 5 on the vehicle body side. Pistons 14 and 14 are inserted into cylinder bores 6a and 6a, and hydraulic chambers 15 and 15 are divided between the bottom of the cylinder bores 6a and 6a and the pistons 14 and 14. Furthermore, a second working fluid inlet hole 16 (the inlet hole of the present invention) is provided through the dividing surface of the mating surface 8 on the disc-out side of the bridging half 6c, facing the hydraulic chamber 15 on the disc-out side. The first working fluid inlet hole 11 and the second working fluid inlet hole 16 communicate at the mating surface 8. Additionally, a sealing groove 17a is provided on the outer periphery of the opening of the second working fluid inlet hole 16 at the mating surface 8, and a sealing member 17 is installed in this sealing groove 17a. At the bottom of the disc-out side cylinder bore 6a, there is a fourth contouring section 6d, which connects the hydraulic chamber 15 on the disc-out side and the second working fluid inlet hole 16 through contouring; and a fifth contouring section 6e, which is contoured towards the hydraulic chamber 15 on the disc-in side. Furthermore, a sixth contour machining section 6f is formed at the bottom of the cylinder bore 6a on the disc-in side, which is contoured toward the fifth contour section 6e. By connecting the fifth contour machining section 6e and the sixth contour machining section 6f, the second working fluid inlet hole 16, the hydraulic chamber 15 on the disc-out side, and the hydraulic chamber 15 on the disc-in side are connected.

[0042] Additionally, a connecting hole 18 is provided at the disc-out end of the bridging half 6c, opening on the disc-out end face 6g and communicating with the second working fluid inlet hole 16. The connecting hole 18 has an internal thread 18a on the opening side for tightening the connecting bolt 19, and a mounting surface 6h for the connecting bolt 19 is formed on the disc-out end face 6g on the outer periphery of the opening. A hollow hose connector 21, fixed to the end of the brake hose 20, is mounted on the connecting bolt 19, and an anti-rotation portion 6i of the hollow hose connector 21 is formed on the outer periphery of the mounting surface 6h. An anti-rotation portion 6i protrudes from the outer peripheral side of the mounting surface 6h and has a wall portion 6j for protecting the connection between the connecting bolt 19 and the hollow hose connector 21, and a locking portion 6k for preventing the hollow hose connector 21 from rotating by cutting a portion of the wall portion 6j. By clamping the hollow hose connector 21 in the locking portion 6k, the hollow hose connector 21 does not rotate when the connecting bolt 19 is screwed into the connecting hole 18. The connecting bolt 19 has an external thread portion 19a that engages with the internal thread portion 18a and a hexagonal head 19b. A liquid through hole 19c is formed inside the external thread portion 19a. The brake hose 20 communicates with the connecting hole 18 via the connecting bolt 19.

[0043] In addition, radially mounted body mounting parts 6n and 6n with mounting bolt insertion holes 6m and 6m in the disc-in and disc-out sides of the brake caliper half 6 on the opposite side of the radially mounted body are formed. The brake caliper body 3 is mounted on the vehicle body by screwing the mounting bolts that pass through the mounting bolt insertion holes 6m and 6m into the brake caliper mounting parts located on the side of the body.

[0044] The brake caliper body 3 uses a bridging part 3a to connect the vehicle-side brake caliper half 5 and the radially mounted vehicle-side brake caliper half 6. Connecting bolts 7 and 7, which pass through bolt holes 7a and 7a formed in the vehicle-side brake caliper half 5, are fastened to internal threaded holes 7b and 7b formed in the radially mounted vehicle-side brake caliper half 6, thereby connecting the first working fluid inlet hole 11 and the second working fluid inlet hole 16. Simultaneously, the first working fluid inlet hole 11, the second working fluid inlet hole 16, the hydraulic chambers 10 and 10 of the vehicle-side brake caliper half 5, and the hydraulic chambers 15 and 15 of the radially mounted vehicle-side brake caliper half 6 are connected. Furthermore, since the connecting hole 18 connects to the second working fluid inlet hole 16, working fluid is supplied to the hydraulic chambers 10, 10, 15, 15 via the connecting bolt 19 and the first working fluid inlet hole 11 and the second working fluid inlet hole 16. In addition, since the vent hole 12 is connected to the first working fluid inlet hole 11, the gas mixed in with the working fluid introduced into the first working fluid inlet hole 11, the second working fluid inlet hole 16, and the hydraulic chambers 10, 10, 15, 15 is discharged to the outside through the vent screw 13.

[0045] Each friction pad 4 consists of a liner 4a that slides in contact with the side of the disc rotor 2 and a metal back plate 4b to which the liner 4a is attached. A suspension plate 4c extends from the upper center of the back plate 4b, through which a hanger 22 is inserted. The hanger 22 is mounted along the disc axis direction at the working parts 5b and 6b of both sides through the canopy opening 3b formed in the bridge part 3a of the brake caliper body 3. It can move along the disc axis direction between the torque bearing parts 5i, 5i, 6p, 6p respectively provided on the disc-in and disc-out sides of the brake caliper half 5 on the vehicle side and the brake caliper half 6 on the radially mounted side of the vehicle body. In addition, a pad spring 23 is provided throughout the back plate 4b, the bridge part 3a and the hanger 22 to press the friction pads 4 and 4 towards the disc-out side and the inner side in the disc radius direction.

[0046] Figure 17 and Figure 18 The disc brake 31 shown uses a brake caliper body 33 formed by replacing the radially mounted brake caliper half 6 on the opposite side of the vehicle body with an axially mounted brake caliper half 32 on the opposite side of the vehicle body.

[0047] The axially mounted brake caliper half 32 on the opposite side of the vehicle body has pistons 34 and 34 inserted into cylinder bores 32a and 32a. A hydraulic chamber (not shown) is divided between the bottom side of the cylinder bores 32a and 32a and the pistons 34 and 34. Furthermore, a second working fluid inlet hole 36 (the inlet hole of the present invention) passes through the hydraulic chamber on the rotating side of the mating surface 35 of the bridging portion 32b. The first working fluid inlet hole 11 and the second working fluid inlet hole 36 formed on the vehicle body side brake caliper half 5 communicate at the mating surface 35. Additionally, a sealing groove (not shown) is provided on the outer periphery of the opening of the second working fluid inlet hole 36 at the mating surface 35, and a sealing member (not shown) is installed in this sealing groove.

[0048] At the bottom of the cylinder bore 32a on the rotating side, there are: a seventh contour machining section 32c, which connects the hydraulic chamber on the rotating side and the second working fluid inlet hole 36 through contour machining; and an eighth contour machining section 32d, which is contour machined toward the hydraulic chamber on the rotating side. Additionally, a ninth contour machining section 32e is formed at the bottom of the cylinder bore on the rotating side, which is contour machined toward the eighth contour machining section 32d. By connecting the eighth contour machining section 32d and the ninth contour machining section 32e, the second working fluid inlet hole 36, the hydraulic chamber on the rotating side, and the hydraulic chamber on the rotating side are connected. Furthermore, at the rotating side end of the bridging half 32b, there is a connecting hole 37 that opens on the rotating side end face 32f and communicates with the second working fluid inlet hole 36. The connecting hole 37 has an internal thread portion 37a and a mounting surface 37b provided on the rotating side end face 32f around the opening. An anti-rotation portion 37c of a hollow hose connector is formed on the outer periphery of the mounting surface 37b.

[0049] In addition, on the disc-out side and the inner side of the disc radius direction of the brake caliper half 32 on the opposite side of the axially mounted vehicle body, there are vehicle body mounting arms 32h and 32h (vehicle body mounting parts of the present invention) with mounting bolt through holes 32g and 32g in the disc axis direction. By screwing the mounting bolts that pass through the mounting bolt through holes 32g and 32g into the brake caliper mounting parts provided on the vehicle body side, the brake caliper body 33 is mounted on the vehicle body.

[0050] The brake caliper body 33 connects the vehicle-side brake caliper half 5 and the axially mounted vehicle-side brake caliper half 32 via the bridging part 33a. Connecting bolts 7 and 7, inserted into bolt insertion holes 7a and 7a formed on the vehicle-side brake caliper half 5, are tightened into internal threaded holes (not shown) formed on the axially mounted vehicle-side brake caliper half 32, thereby connecting the first working fluid inlet hole 11 and the second working fluid inlet hole 36. This connects the first working fluid inlet hole 11, the second working fluid inlet hole 36, and each hydraulic chamber. Furthermore, since the connecting hole 37 connects to the second working fluid inlet hole 36, working fluid is supplied to each hydraulic chamber via the connecting bolts and the first and second working fluid inlet holes 11 and 36. Additionally, since the vent hole 2 connects to the first working fluid inlet hole 11, gas mixed in with the working fluid introduced into the first working fluid inlet hole 11, the second working fluid inlet hole 36, and each hydraulic chamber is discharged to the outside via the vent screw 13.

[0051] In this example, as described above, regardless of whether the radially mounted opposite-side brake caliper half 6 or the axially mounted opposite-side brake caliper half 32 is engaged with the vehicle-side brake caliper half 5, the second working fluid inlet hole 16 or the second working fluid inlet hole 36 communicates with the first working fluid inlet hole 11, enabling the supply of working fluid to the cylinder bores 5a and 32a. Therefore, even brake caliper bodies with different mounting types for vehicle body installation can be manufactured using the same vehicle-side brake caliper half 5, achieving cost reduction.

[0052] Furthermore, the radially mounted vehicle side brake caliper half 6 and the axially mounted vehicle side brake caliper half 32 have a sealing groove 17a, connecting holes 18 and 37, and internally threaded holes 7b and 7b for fastening the connecting bolts 7. As a result, the shape of the vehicle side brake caliper half 5 can be formed as simply as possible, and further cost reduction can be achieved.

[0053] Furthermore, the present invention is not limited to the above-described embodiments. The connection between the cylinder bore and the working fluid inlet hole, as well as the connection between adjacent cylinder bores, is not limited to a structure achieved through contour machining; it can also be achieved through flange machining or casting. Additionally, connecting holes can be provided on the brake caliper half on the vehicle body side, and vent holes can be provided on the radially mounted brake caliper half on the opposite side of the vehicle body and the axially mounted brake caliper half on the opposite side of the vehicle body. Furthermore, the number of cylinder bores formed on each brake caliper half is arbitrary.

[0054] Explanation of reference numerals in the attached figures

[0055] 1: Disc brakes for vehicles

[0056] 2: Disc rotor

[0057] 3: Brake caliper body

[0058] 3a: Bridging section

[0059] 3b: Ceiling opening

[0060] 4: Friction pad

[0061] 4a: Lining

[0062] 4b: Back panel

[0063] 4c: Suspension plate

[0064] 5: Side brake caliper half of the vehicle body

[0065] 5a: Cylinder bore

[0066] 5b: Functional part

[0067] 5c: Bridge half-body

[0068] 5d: First contour machining department

[0069] 5e: Second contour machining section

[0070] 5f: Third contour machining department

[0071] 5g: Outer end face in the direction of disk radius

[0072] 5h: Install the seat surface

[0073] 5i: Torque Bearing Section

[0074] 6: Radial mounting type brake caliper half on the opposite side of the vehicle body

[0075] 6a: Cylinder bore

[0076] 6b: Functional part

[0077] 6c: Bridge half

[0078] 6d: Fourth Contour Machining Department

[0079] 6e: Fifth Contour Machining Department

[0080] 6f: Sixth Contour Machining Department

[0081] 6g: Rotate the disc to the side end face

[0082] 6h: Mounting surface

[0083] 6i: Anti-rotation part

[0084] 6j: Wall

[0085] 6k: Card-connecting part

[0086] 6m: Through hole for mounting bolts

[0087] 6n: Body mounting section

[0088] 6p: Torque-bearing section

[0089] 7: Connecting bolts

[0090] 7a: Bolt insertion hole

[0091] 7b: Internal threaded hole

[0092] 8: Joint surface

[0093] 9: Piston

[0094] 10: Hydraulic Chamber

[0095] 11: First working fluid inlet hole

[0096] 12: Vent hole

[0097] 12a: Internal thread section

[0098] 13: Breather screw

[0099] 13a: External thread section

[0100] 13b: Ventilation cap

[0101] 14: Piston

[0102] 15: Hydraulic Chamber

[0103] 16: Second working fluid inlet hole

[0104] 17: Sealing components

[0105] 17a: Sealing groove

[0106] 18: Connecting hole

[0107] 18a: Internal thread section

[0108] 19: Connecting bolts

[0109] 19a: External thread section

[0110] 19b: Hexagonal head

[0111] 19c: Liquid passage

[0112] 20: Brake hose

[0113] 21: Hollow hose connector

[0114] 22: Revocation

[0115] 23: Spring Pad

[0116] 31: Disc brakes for vehicles

[0117] 32: Radial mounting type brake caliper half on the opposite side of the vehicle body

[0118] 32a: Cylinder bore

[0119] 32b: Bridge half

[0120] 32c: Seventh Contour Machining Department

[0121] 32d: Eighth Contour Machining Department

[0122] 32e: Ninth Contour Machining Department

[0123] 32f: Rotate the disc to the side end face

[0124] 32g: Through hole for mounting bolts

[0125] 32h: Body mounting arm

[0126] 33: Brake caliper body

[0127] 33a: Bridging section

[0128] 34: Piston

[0129] 35: Joint surface

[0130] 36: Second working fluid inlet hole

[0131] 37: Connecting hole

[0132] 37a: Internal thread section

[0133] 37b: Mounting surface

[0134] 37c: Anti-rotation part

Claims

1. A vehicle body side brake caliper half of a disc brake caliper, characterized in that, have: Functional part with cylinder bore; and The bridging section half that forms half of the bridging section spanning the outer periphery of the disc rotor. The bridging section half is provided with a mating surface that engages with the brake caliper half on the opposite side of the vehicle body. An inlet hole for introducing working fluid into the cylinder bore is formed from the mating surface toward the bottom side of the cylinder bore. It is configured to supply working fluid to the brake caliper half on the opposite side of the vehicle body through the inlet hole.

2. A brake caliper body for a disc brake, characterized in that, It is constructed by fastening the vehicle body side brake caliper half as described in claim 1 to the vehicle body opposite side brake caliper half using connecting bolts.

3. The brake caliper body of the disc brake according to claim 2, characterized in that, The vehicle-side brake caliper half has either a connecting hole for introducing working fluid into the inlet hole or a vent hole for venting gas from the working fluid, and the opposite-side brake caliper half has the other of the connecting hole or the vent hole, as well as an internally threaded hole for fastening the connecting bolt.

4. The brake caliper body of the disc brake according to claim 2 or 3, characterized in that, The brake caliper half on the opposite side of the vehicle body has either a radially mounted body mounting part or an axially mounted body mounting part.

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