JPH0144814Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a disc brake, and particularly to a caliper thereof.

Prior Art Conventionally, a caliper has been provided with a caliper which has a saddle shape, including a cylinder part and a pawl part facing each other, and a connecting part which connects the cylinder part and the pawl part, and which is installed astride a disc rotor, and a caliper on the inside of the caliper. pads arranged on both sides of the disc rotor;
A disc brake is provided in which one of the pads is pressed against one surface of the disc rotor by a piston projected from the cylinder part, and at the same time the other pad is pressed against the other surface of the disc rotor by the claw part.

Problems to be Solved by the Invention However, in such disc brakes, the caliper, which is composed of a cylinder part, a connecting part, and a claw part, is usually integrally formed by casting, so the connection between the cylinder part and the claw part is difficult. The distance between them is always constant, and depending on the thickness of the disc rotor and pad, the type of the disc rotor, etc., it may not be possible to arrange the disc rotor and pad between the cylinder part and the claw part. be. For this reason, conventionally, even if the inner diameter of the cylinder part is the same, there are multiple types in which the distance between the cylinder part and the claw part differs depending on the thickness of the disc rotor and pad, the type of disc rotor, etc. The company had no choice but to cast and mold each type of caliper.

Means for Solving the Problems The present invention was made against the background of the above-mentioned circumstances, and its gist is that in the above-mentioned type of disc brake, the caliper includes the cylinder portion. It is composed of two members, a first partial caliper and a second partial caliper including the claw portion, and the two members are provided with an overlapping portion that overlaps in the radial direction of the disc rotor, and the overlapping portion is provided in the radial direction of the disc rotor. Engagement teeth capable of positioning a plurality of types of relative positions of the two members in the axial direction of the disk rotor are formed on two facing surfaces of the disc rotor, and when the engagement teeth are in an engaged state, the overlapping portion of the two members is formed. are fixed to each other using fixing means.

Operation and Effects of the Invention According to this structure, the caliper is composed of two members, the first partial caliper including the cylinder portion and the second partial caliper including the pawl portion, and the two members are arranged in the radial direction of the disc rotor. An overlapping portion is provided that overlaps the disk rotor, and two surfaces of the overlapping portion facing each other in the radial direction of the disk rotor are capable of positioning a plurality of types of relative positions in a direction parallel to the axis of the cylinder portion of the two members. Engaging teeth are formed respectively, and the overlapping portions of the two members are fixed to each other by the fixing means in the engaged state of the engagement teeth, so by appropriately selecting the engagement position of the engagement teeth, , the relative positions of the two members in the axial direction of the disc rotor can be changed to a plurality of types, and the relationship between the cylinder part and the claw part can be improved by simply fixing the overlapping part with a fixing means at a predetermined engagement position. Multiple types of calipers with different distances can be easily manufactured. For this reason,
There is no need to cast different types of calipers with different distances, as is the case in the past.

In addition, since the caliper is composed of two members, the first part caliper including the cylinder part and the second part caliper including the claw part, when finishing the inside of the cylinder part, etc., the claw part should face the cylinder part. The first part of the caliper, which has not been completely removed, can be processed as a single item, and its finishing process, etc., is easier than in the past.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

1 and 2 are diagrams showing the main parts of a disc brake to which the present invention is applied, in which numeral 10 is disposed straddling the outer circumferential side of the disc rotor 12 in its thickness direction, and is generally saddle-shaped as a whole. It is a caliper that accomplishes this. The caliper 10 is supported in a floating manner on a pair of guide portions 18 by a pair of slide pins 16 and the like protruding from a torque plate 14 fixed to a non-rotating member (not shown) in a direction parallel to the axis of the disc rotor 12. has been done. Calipa 10
is a cylinder part 22 in which a cylinder bore 20 is formed, and extends in a direction parallel to the axis of the cylinder part 22 from the open end of the cylinder bore 20 on the radially outer side of the disc rotor 12 of the cylinder part 22. The connecting portion 24 is provided with a connecting portion 24 that extends out, and a claw portion 26 that extends toward the inside in the radial direction of the disc rotor 12 at the distal end of the connecting portion 24 and is opposed to the cylinder portion 22. A piston 28 is slidably fitted. A pair of pads 30 and 32 are supported by the torque plate 14 between the piston 28 and the claw portion 26 so as to be movable in the axial direction of the cylinder portion 22 with the disc rotor 12 sandwiched therebetween.

In such a disc brake, the fluid chamber 34
When hydraulic pressure is supplied to the piston 28, the piston 28 is pushed out from the cylinder bore 20, and one pad 30 is pressed against one surface of the disc rotor 12, and the caliper 10 is moved in the opposite direction to the piston 28 by the reaction force. The other pad 32 is pressed against the other surface of the disk rotor 12 by the claw portion 26. As a result, the disc rotor 12 is compressed by the pads 30 and 32 with a predetermined pressing force, and its rotation is suppressed.

Here, in this embodiment, the caliper 10
The member including the cylinder part 22 and the member including the claw part 26 are integrally connected to each other on the cylinder part 22 side of the connecting part 24, and the overlapping part 36 is on the cylinder part 22 side, and the member including the claw part Overlapping portions 38 are formed on the 26 side. Serrated engagement teeth 40 extending over a predetermined length substantially along a plane perpendicular to the axis of the cylinder portion 22 are provided on the inner surface of the overlapping portion 36 located on the radially inner side of the disk rotor 12 . A plurality of engagement teeth 42 are formed in a direction parallel to the axis of the disc rotor 12, and a plurality of engagement teeth 42 that mesh with the engagement teeth 40 are formed on the outer surface of the overlapping portion 38 located on the radially outer side of the disc rotor 12. ing. And cylinder part 2
The outer surface of the overlapping portion 36 of the two parts on the side opposite to the engaging teeth 40 has a predetermined depth, and the head of the bolt 52 (to be described later) is provided with a predetermined gap (A in FIG. 1) in the axial direction of the cylinder portion 22. ) and are fitted into the overlapping portion 3.
6 is formed over a predetermined length in a direction parallel to the axis of the cylinder portion 22, and
Elongated holes 46 whose long axes are located in a direction parallel to the axis of the cylinder portion 22 are formed at the bottoms of the notches 44, respectively. In addition, the overlapping portion 38 of the claw portion 26
A female threaded hole 48 is formed in the substantially radial direction of the disc rotor 12 and corresponds to the elongated hole 46 . Then, the cylinder portion 22 is opened with both the engaging teeth 40 and 42 being engaged with each other at a predetermined position.
The bolt 52 passes through the elongated hole 46 through the washer 50 from the side of the overlapping portion 36 of the female screw hole 4 of the claw portion 26.
8, the overlapping parts 36 and 38, that is, the cylinder part 22 and the claw part 26
The relative positions of the cylinder portions 22 in the direction parallel to the axis are fixed relative to each other, and
As a result, the caliper 10 including the cylinder portion 22, the connecting portion 24, and the claw portion 26 is integrally formed. Therefore, in this example,
The first portion caliper is moved by the cylinder portion 22 and the overlapping portion 36, and the claw portion 26 and the overlapping portion 38
The second partial caliper is constructed by the bolt 52 and the female threaded hole 48.
etc. function as a fixing means. Further, a predetermined gap (B and C in the figure in this embodiment) is formed between the surfaces of the overlapping parts 36 and 38 that face each other in a direction parallel to the axis of the cylinder part 22. Gaps B, C, bolt 52 and long hole 4
6 in the axial direction of the cylinder portion 22, that is, in the axial direction of the disk rotor 12, and the gap A, the overlapping portions 36 and 3
8, that is, relative movement of the cylinder portion 22 and the claw portion 26 in a direction parallel to the axis of the cylinder portion 22 is permitted.

As described above, according to this embodiment, the cylinder portion 22
The relative position of the claw portion 26 in the direction parallel to the axis of the cylinder portion 22 can be changed into a plurality of types based on the engagement positions of the engagement teeth 40, 42 formed in the overlapping portions 36, 38, Overlapping part 3
6, 38 from the approximate radial direction of the disk rotor 12, the overlapping portions 36, 38 can be easily fixed in a predetermined engagement position.
According to the thickness of 0.0, 32 or the type of disc rotor, it is easy to create multiple types of calipers with different distances D between the cylinder part 22 and the claw part 26, and furthermore, different distances E between the piston 28 and the claw part 26. It can be manufactured to This eliminates the need to cast different types of calipers with different distances D and E, unlike the conventional method.

Furthermore, according to this embodiment, the caliper 10 is composed of two members: the first caliper portion including the cylinder portion 22 and the second caliper portion including the pawl portion 26, so that when finishing the cylinder bore 20, etc. This has the advantage that the first part caliper, in which the claw part 26 is not opposed to the cylinder part 22, can be machined as a single item, and the finishing process thereof is easier than in the past.

In addition, in the above-mentioned embodiment, the overlapping portions 36, 3
Although a plurality of serrated teeth are formed in each of the engagement teeth 40 and 42 of No. 8, it is not necessary, and even if one of the engagement teeth 40 and 42 has only one, the other may have a plurality of serrations. If this is the case, a certain effect of the present invention can be obtained, and the engagement teeth may have a shape other than sawtooth, for example, a rectangular shape.
In short, engaging teeth are formed that can position the first partial caliper including the cylinder portion 22 and the second partial caliper including the claw portion 26 in a plurality of types of relative positions in a direction parallel to the axis of the cylinder portion 22. It's fine if you have one.

Further, in the above-described embodiment, the first partial caliper and the second partial caliper are each integrally molded, but they may also be constructed by integrally fixing a plurality of members.

Further, in the above-described embodiment, the fixing means is constituted by the bolt 52, etc., but it does not necessarily have to be constituted in this way. They may also be fixed to each other.

In addition, various changes may be made to the present invention without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is an enlarged view showing a main part of a cross section taken along the line - in FIG. 2. FIG. 2 is a plan view showing the main parts of a disc brake to which the present invention is applied. 10: Caliper, 12: Disc rotor, [2
2: cylinder part, 36: overlapping part] (first part caliper), 24: connecting part, [26: claw part, 38: overlapping part] (second part caliper), 28: piston,
30, 32: Padded, 40, 42: Engaging tooth, [4
8: female screw hole, 52: bolt] (fixing means).

Claims (1)

[Claims for Utility Model Registration] A caliper having a saddle shape and comprising a cylinder portion and a pawl portion facing each other, and a connecting portion connecting the cylinder portion and the pawl portion, and installed astride a disc rotor;
pads disposed on both sides of the disc rotor inside the caliper, one of the pads is pressed against one surface of the disc rotor by the piston protruding from the cylinder part, and at the same time, the claw part presses one of the pads against one surface of the disc rotor. In a disc brake of a type in which the other part is pressed against the other surface of the disc rotor, the caliper is composed of two members: a first partial caliper including the cylinder part and a second partial caliper including the claw part, The member is provided with an overlapping portion that overlaps in the radial direction of the disc rotor, and two surfaces of the overlapping portion that face each other in the radial direction of the disc rotor are provided with a plurality of types of relative positions of the two members in the axial direction of the disc rotor. A disc brake characterized in that positionable engaging teeth are formed, and the overlapping portions of the two members are fixed to each other using a fixing means in the engaged state of the engaging teeth.