JP2589350Y2 - Disc brake device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake device.

[0002]

2. Description of the Related Art Conventionally, a friction pad of a disc brake device has ears on both sides, and is mounted so that the upper and lower ends of the ears are sandwiched by pad springs (for example, Japanese Utility Model Laid-Open No. 63-166729). FIG.
The pad spring is fixed to the arm of the mounting bracket of the disc brake device, is sandwiched between the arm and the ear of the friction pad, and is fixed to the right and left so as not to be displaced. The upper portion of the pad spring that presses the upper end of the ear portion of the friction pad is configured to bend upward.

[0003]

[Problems to be Solved by the Invention] The prior art has the following problems. <A> When attaching the friction pad to both arms of the mounting bracket, slide the friction pad in the axial direction of the rotor while bending the upper part of the pad spring that holds the ears of the friction pad upward, and insert it. ing. At this time, in order to simultaneously insert the ear portions on both sides of the friction pad, the friction pad is inserted from the axial direction of the rotor while simultaneously bending the upper portions of the two pad springs on both sides. Therefore, the mounting operation is complicated. <B> When removing the friction pad, the operation is reverse to the mounting operation, and the upper part of the two pad springs is removed in the axial direction of the rotor while simultaneously flexing the upper parts.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a disk brake device in which a friction pad can be easily attached and detached.

[0005]

According to the present invention, a pair of friction pads are provided on both sides of a torque receiving member in parallel with the rotor axis, and a pair of friction pads are frictionally engaged on both sides of the rotor. And a plate-like pad liner is interposed between at least one contact surface between the arm and the friction pad, the pad liner is attached to the arm, and the friction pad slides on the arm. In the disc brake device which freely engages, the pad liner has a guide portion for facilitating insertion of the friction pad from a radially outer side of the rotor, and the friction pad is inserted into contact with the guide portion, and A flexible portion elastically supported so as to be deviated in a direction away from the friction pad, and a locking portion provided on a distal end side of the flexible portion to limit movement of the friction pad radially outward with respect to the rotor. With Characterized Rukoto, disc brake device, or, the pad liner is characterized in that it comprises a resilient pressing portion for biasing the friction pad to one of said torque receiving member, the disc brake device,
Alternatively, the flexible portion is bent by the action force of the friction pad moving in the radial direction, and the locking portion is shifted in a direction away from the friction pad to allow the friction pad to move outward in the radial direction. A disc brake device, or a caliper is disposed above the friction pad so as to be slidable with the torque receiving member, and the elastic pressing portion contacts the caliper to form the friction pad. A disc brake device characterized by being pressed against a torque receiving member.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

<A> Outline of Disc Brake Device FIGS. 1 and 2 are a front view and a plan view, respectively, showing a partial cross section of the disc brake device 10. The disc brake device 10 is fixed to a vehicle body or the like by a bolt hole 1c of the torque receiving member 1. Arm portions 1a and 1b are protrudingly provided on both sides of the torque receiving member 1, and guide pins 2 and 3 are respectively fitted into the arms. These guide pins 2 and 3 are arranged parallel to a rotor shaft (not shown). The caliper 4 has two wings 4c, 4 on which the guide pins 2, 3 are attached.
c, an actuator section 4a having a built-in piston (not shown), and a reaction section 4b disposed opposite to the actuator section 4a. Further, the guide pins 2 and 3 may be attached to the torque receiving member 1, and in that case, the guide pins 2 and 3 are smoothly fitted to the caliper 4. The pair of friction pads 5, 6 are orthogonal to the guide pins 2, 3, and are slidable on the arms 1a, 1b of the torque receiving member 1 via the pad liner 7 so as to sandwich a rotor (not shown). Are located.

<B> Friction Pads The friction pads 5, 6 are respectively composed of back plates 5a, 6a and linings 5b, 6b as friction materials. The back plates 5a and 6a have ears 5c and 6c on both sides, respectively.
It is slidably attached to the pad liner 7 via c and 6c.

<C> Pad Liner The pad liner 7 is, as shown in FIGS.
For example, a spring-like metal plate is formed in a substantially gate shape, and the arms 1 a and 1 b of the torque receiving member 1 and the ears 5 of the friction pads 5 and 6 are formed.
It is arranged between the contact surfaces with c and 6c. Pad liner 7
Are a liner portion 7a interposed between these contact surfaces, a mounting portion 7b inserted into the rotor escape grooves 1f and 1g of the arm portion of the torque receiving member 1, a U-shaped elastically supported flexible member. And a member which is bent at a substantially right angle from the flexible portion 7c and contacts the upper surfaces of the ear portions 5c, 6c of the friction pads 5, 6 to limit the movement of the friction pads 5, 6 outward in the radial direction. Stop 7d
And a guide portion 7e for guiding the insertion of the friction pads 5 and 6.
And a protruding claw 7f protruding in the axial direction from the flexible portion 7c and extending from below the liner portion 7a and abutting against the lower surfaces of the friction pads 5 and 6, so that the friction pads 5 and 6 An elastic pressing portion 7g biasing in one direction is integrally formed.

If the contact between the engaging portion 7d and the upper surfaces of the ear portions 5c, 6c is weakened in the axial direction away from the rotor, the force acting on the friction pads 5, 6 in the direction away from the rotor when the brake is released. (Retract force) is generated, and the friction pads 5 and 6 can be prevented from being dragged. In addition, the pad liner 7 has substantially gate-shaped both legs, which are friction pads 5, 6 respectively.
But does not necessarily have to have both legs,
A structure that engages with only one friction pad may be used.

<D> Arms The arms 1 a and 1 b of the torque receiving member 1 are
Has the protrusions 1d and 1e that come into contact with the liner portion 7a. When the friction pads 5 and 6 are inserted into the arms 1a and 1b from the radial outside of the rotor, the flexible portions 7c and the locking portions 7d are provided.
And guide portions 7e have recessed spaces 1h and 1i so that they can be shifted outward from the surfaces of the protrusions 1d and 1e.

<E> Attachment and Removal of Friction Pad FIG. 5 shows a state in which the friction pad 6 is attached to the torque receiving member 1.
Shown in When the friction pad 6 is inserted between the two arms 1a and 1b of the torque receiving member 1 from the outside in the radial direction of the rotor, the ear 6c of the friction pad 6 comes into contact with the guide 7e of the pad liner 7. When the friction pad 6 is further pushed in, the flexible portion 7c of the pad liner 7 shifts to the concave space 1i of the arm 1b. The friction pad 6 is further inserted, and the lug portion 6c of the friction pad 6 presses the liner portion 7a against the projection 1e and abuts on the elastic pressing portion 7g. At the same time, the flexible portion 7c returns to the free state, and the locking portion 7d abuts on the upper portion of the lug 6c of the friction pad 6 to lock the friction pad 6 as shown in FIG. As a result, the engaging portion 7d prevents the friction pad 6 from floating outward in the rotor radial direction. In order to remove the friction pad 6, the operation reverse to the mounting is performed, and the engaging portion 7d is pushed out into the recessed space 1i of the arm portion 1b by the projection 7f of the pad liner 7, and the friction pad 6 is pulled out in the radial direction of the rotor.

<F> Other Embodiments As shown in FIG. 6, a pad liner 17 of another embodiment includes a mounting portion 17b, a flexible portion, and a continuous L-shaped liner portion 17a. 17c, guide portion 17e, locking portion 17
d and an elastic pressing portion 17g. Elastic pressing part 17g
When the caliper 4 is arranged above the friction pad 6,
The tip abuts on the caliper 4 to urge the friction pad 6 against one of the torque receiving members 1. The pad liner 17 is interposed between a concave portion 16d formed in the ear portions 16c at both ends of the friction pad 6 and the protrusion 11e of the torque receiving member 1, and makes the engaging portion 17d abut against the concave portion 16d to provide friction. The pad 6 is prevented from floating outward in the radial direction of the rotor. The torque receiving member 1 has a protrusion 11e provided above the arm 1b, and forms a concave space 1i below the arm 1b. The guide portion 17e and the locking portion 17d of the pad liner 17 are shifted in this space, so that the friction pad 6 can be attached and detached. As shown in FIG. 7, when the bending direction of the locking portion 27d of the pad liner 27 is directed downward, when the friction pad 6 is detached and the friction pad 6 is pulled outward in the radial direction of the rotor with a certain force or more, the pad liner is removed. 27 is a notch 6 of the friction pad 6
Guided by d, the flexible portion bends and shifts away from the friction pad 6.

In the above embodiment, the torque receiving member 1 is usually called a carrier, but a torque receiving portion may be formed on the caliper. Further, a torque receiving portion may be formed on both the caliper and the carrier, and one friction pad may be supported by the torque receiving portion of the caliper, and the other friction pad may be supported by the torque receiving portion of the carrier. Thus, the present invention can be applied to an open-top type or an open-type disk brake device.

[0015]

[Effects of the Invention] The present invention has the following effects. <B> A guide part for facilitating the insertion of the friction pad from the radial outside of the rotor into the pad liner, and a friction pad is inserted and elastically supported so as to be displaced away from the friction pad by contacting the guide part. Since the friction pad is provided, the friction pad can be easily attached or detached from the radial outside of the rotor. <B> Since the elastic pressing portion is formed integrally with the pad liner, rattle noise can be prevented without increasing the number of components. <C> The present invention can be applied not only to a fist type disc brake device but also to an open top type or an opposed type disc brake device.

[Brief description of the drawings]

FIG. 1 is a front view of a disc brake device showing a partial cross section.

FIG. 2 is a plan view of the disc brake device.

FIG. 3 is a side view of a pad liner.

FIG. 4 is a perspective view of a pad liner.

FIG. 5 is a diagram showing a mounting state of a friction pad.

FIG. 6 is a partially enlarged view of a disc brake device according to another embodiment.

FIG. 7 is a partially enlarged view of a disc brake device according to still another embodiment.

[Description of Signs] 1: Torque receiving member, 5, 6: friction pad, 7: pad liner, 10: disc brake device

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16D 65/097 F16D 55/224 113

Claims (4)

(57) [Scope of request for utility model registration] An arm parallel to a rotor axis is provided on both sides of a torque receiving member, and a pair of friction pads frictionally engaged with both sides of the rotor are mounted between the arms. A disc brake device in which a plate-shaped pad liner is interposed between at least one contact surface with the friction pad, the pad liner is attached to the arm, and the friction pad is slidably engaged with the arm. The pad liner includes a guide portion for facilitating the insertion of the friction pad from the radial outside of the rotor, and the pad liner is shifted in a direction away from the friction pad when the friction pad is inserted into contact with the guide portion. A flexible portion elastically supported as described above, and a locking portion provided on the distal end side of the flexible portion and restricting movement of the friction pad radially outward with respect to the rotor. Do Click brake system. 2. A disc brake according to claim 1, wherein said pad liner includes an elastic pressing portion for urging said friction pad against one of said torque receiving members. apparatus. 3. The disk brake device according to claim 1, wherein the flexible portion is bent by an action force of the friction pad moving in a radial direction, and the locking portion is shifted in a direction away from the friction pad. A disc brake device characterized in that the friction pad is allowed to move radially outward. 4. The disc brake device according to claim 2, wherein a caliper is disposed above the friction pad so as to be slidable with the torque receiving member, and the elastic pressing portion is brought into contact with the caliper so as to contact the friction pad. A disc brake device.