JPS5818533B2 - disc brake - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc brake, and more particularly to a Dinuk brake, which includes an anti-noise spring between at least one friction element and a torque member.

The relative movement between the friction element and the torque member that occurs when a vehicle equipped with brakes travels on uneven terrain generates noise that is unpleasant to the vehicle occupants, so it is common to An anti-noise spring is provided to suppress relative movement between the two.

This noise prevention spring must have a very simple structure so that it can be manufactured with a minimum amount of time, and it must also be equipped with a device to prevent the spring from accidentally separating from between the torque member and the friction element during normal braking. Must be prepared.

The anti-noise spring must be sufficiently elastic to be able to compress and expand the vehicle an indefinite number of times without losing its elasticity.

Furthermore, the noise-prevention springs must not in any case interfere with the normal operation of the brakes.

Therefore, an important object of the present invention is to provide a Dinuk brake in which the elastic or actuating part of the noise prevention spring is located at a distance from the torque member so that it cannot be deformed even slightly by the braking torque. be.

To this end, the invention provides a rotor having a pair of friction surfaces, a torque member disposed proximate said rotor and having a pair of opposing inner edges, and a torque member slidable on said torque member. and has a torque transmitting portion adjacent to each of the inner edges, one of the torque transmitting portions cooperating with the corresponding inner edge to provide a brake when the rotor rotates in one direction. The friction element corresponds to a friction element that limits the gap during application, but closes the gap and transmits brake torque to the torque member when applying the brake when the rotor rotates in the opposite direction. a drive device for engaging the friction surface; and a noise prevention device including an annular resilient body spaced apart from the gap, the annular body being connected to a corresponding inner side of the torque member. It has an axis extending substantially parallel to the end edge and a pair of end edges, and a pair of lattice-shaped legs extend from the end edge into the gap, and the elasticity of the body allows the legs to the legs are expanded so that one of the legs engages the corresponding inner edge, the other leg engages the one torque transmitting portion, and the other leg engages the corresponding inner edge; extends substantially parallel to the torque transmitting portion and terminates in a section perpendicular to the other portions of the leg, cooperating with the annular body to accommodate the torque transmitting portion of the friction element; a protrusion extending from the annular body into the recess for frictionally engaging the torque transmitting portion and securing the noise prevention device to the torque transmitting portion; and the other leg has an opening for receiving the one leg when the torque transmitting portion moves toward the corresponding inner edge, and the other leg has an opening in the opposite direction of the rotor. The present invention provides a Dinuk brake characterized in that the brake torque is transmitted through the two leg portions when the brake is applied during rotation.

According to one embodiment of the invention, one of the legs includes a device for fixing it to the torque transmitting part of the friction element.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

A Tinuku brake, generally designated 10 in FIGS. 1-4, includes a rotor 12 having a pair of friction surfaces 14 and 16.

The torque member, indicated generally at 18, includes a pair of circumferentially spaced arms 20 and 22 (not fully shown) having a recess 24 therebetween.
limit.

Each arm 2n, 22 bounds an inner edge 26 having a notch, the notch bounded by arm 20 being indicated generally at 28.

The notch 28 has an upper edge 30°, a lower edge 32, and an edge 30.
and 32 to each other.

Dinuk brake 10 further includes a first friction element 36 disposed opposite friction surface 14 and a second friction element 38 disposed opposite friction surface 16 .

Each family of circumferentially spaced ends of friction element 36 includes a protrusion that is received within a corresponding notch on torque member 18 so that friction element 36 is slidably mounted. The friction surface 14 can be moved toward and away from the friction surface 14.

The protrusion contained within the cutout 28 is generally designated 4.
It is indicated by 0.

Projection 40 has a vertically extending edge 42 extending generally parallel to edge 34 of notch 28 .

A noise protection spring, generally designated 44, is disposed between the edge 34 of the notch 28 and the edge 42 of the projection 40.

Anti-noise spring 44 includes an annular body 46 with a pair of edges 48 and 50 from which legs 52 and 54 extend.

Leg 52 includes portions 56 and 58 that extend substantially parallel to each other and are connected to each other by linkage 60 .

Portions 56, 58 and 60 delimit a recess receiving the end of projection 40, and projection 61 projects from edge 48 into the recess and frictionally engages the frictional element so that the same element recesses. It prevents you from moving from there.

Edge 50 is tapered so that leg 540 width is substantially less than the width of leg 52.

An opening 63 is formed in leg 52 and has a width sufficient to accommodate leg 54.

Friction elements 36 and 38 are connected to corresponding friction surfaces 14 and 1 by a drive member or caliper, generally designated 62.
6 and are frictionally engaged.

Caliper 62 includes a nose housing 64 defining a bore 66 therein for slidably receiving a drive pinneton 68 .

One end of pinuton 68 cooperates with the end of bore 66 to define a variable volume fluid chamber 70 therebetween.

The other end of pinuton 68 operatively engages friction element 36 .

The vehicle's master cylinder (
(not shown) flows into the variable volume fluid chamber 70 via the inlet lower 2.

Caliper 62 further includes a bridge portion 74 extending across the outer circumference of rotor 12 and a radially inwardly extending portion 7.6 disposed proximate friction surface 16 and supporting friction element 38.

Caliper 62 is slidably mounted on torque member 18 by elongated bearing surfaces on both sides of bridge portion 74 extending substantially parallel to the axis of rotation of rotor 12 .

As shown in FIG. 1, one of the bearing surfaces 78 slidingly engages a corresponding bearing surface 80 on a key 82 releasably retained on arm 2''0 by thumbscrew 84. .

An anti-noise spring 86 is disposed between the key 82 and the bearing surface 78 to limit relative movement between the caliper 62 and the torque member 18.

Another: a bearing surface (not shown) slidingly engages a corresponding bearing surface supported directly by arm 22.

This feature simply releases thumbscrew 84 and key 82.
The caliper can be removed from the torque member 18 by removing the brake.

It makes maintenance very easy.

When the brake 10 is assembled, the protrusion 40 on the friction element 36 is delimited by the sections sj, s8 and 60 of the anti-noise spring 44. is inserted into the recess.

The protrusion 61 frictionally engages with the side surface of the friction element β6. This prevents the noise prevention spring 44' from accidentally moving away from the friction element 36.

Thereafter, an assembly consisting of friction element 36 and anti-noise spring 44 is placed in recess 24 bounded between pools 20 and 22.

When the friction element 36 is disposed within the recess 24, the legs 52 and 54 are perpendicular to the projection 40! It should be noted that it is located within the gap defined between edge 42 and vertical edge 34 of notch 28.

However, 5, since the body 46 of the spring 44 is not located within this gap, the body 46 does not absorb the force caused by the movement of the friction element 36 towards the arm 20.

When the brakes of the vehicle are released, the elasticity of the body 46 is the first.
Legs 52 and 54 are spaced apart from each other as clearly shown in FIGS.

Of course, this action exerts a biasing force on the friction element 36 to limit its relative movement with respect to the torque member 18, thereby preventing the production of unpleasant noises.

The Dinuk brake described above operates as follows.

When brake application occurs, pressurized fluid flows into chamber 70 forcing pinuton 68 to the right in FIG.

Friction element 36 is operatively connected to pinuton 68 such that movement of the pinuton causes friction element 3''6 to engage friction surface 14.

Because the caliper 62 is slidably mounted on the torque member 18, fluid pressure within the chamber 70 exerts a reaction force on the caliper 6.2, which is applied to the bridge portion 74 and inwardly. Acting through the elongated portion 76 , the friction element 38 is brought into engagement with the friction surface 16 .

When the vehicle is moving forward, the friction element 36 is anchored against the edge of a notch (not shown) supported by the arm 22.

However, if brake application occurs while the vehicle is reversing, the protrusion 40 will move toward the edge 34 of the notch 28 and drive the leg 52 toward the torso 46.
Press.

As shown in FIG. 4, opening 63 is large enough to accommodate leg 54 so that legs 52 and 54 do not overlap when friction element 36 is in anchoring engagement with arm 20.

Of course, the anchoring force is applied to the protrusion 40 via the legs 52 and 54.
and is transmitted to the edge 34.

The invention is not limited to the embodiments described above; at least one anti-noise spring, such as spring 44 in the embodiments described above, is inserted between one of the friction elements and the frame or fixed caliper. It will be appreciated that the invention is equally applicable to sliding frame or fixed caliper type disc brakes.

Moreover, the present invention is not limited to Dinuk brakes that include a single anti-noise spring, such as spring 44, where each friction element is mounted on at least one of its circumferentially spaced ends. The present invention can be similarly applied to a Dinuk brake equipped with a noise prevention spring.

[Brief explanation of drawings]

Fig. 1 is a partial side view of a Dinuk brake with a noise prevention spring showing an embodiment of the present invention, and Fig. 2 is an enlarged transparent view of the noise prevention spring used in the disc brake shown in Fig. 1. 3 is a cross-sectional view taken along line 3--3 of FIG. 1, and FIG. 4 is a partial cross-sectional view taken along line 4--4 of FIG. In the drawings, numeral 10 is a disc brake, 12 is a rotor, 14 and 16 are friction surfaces, 18 is a torque member, 20 and 22 are arms, 24 is a recess, 26 is an inner edge, 28 is a notch, 36 and 38 are first and second friction elements; 40 is a protrusion; 44 and 86 are noise prevention springs; 46 is an annular body;
8 and 50 are edges, 52 and 54 are leg parts, 56 and 58 are parts, 60 is a connecting part, 61 is a projection part, 62 is a caliper, 63
68 is a driving pinuton, 70 is a variable volume fluid chamber,
Reference numeral 82 indicates a key, and reference numeral 84 indicates a thumbscrew.

Claims (1)

[Claims] 1 a rotor having a pair of friction surfaces, a torque member disposed proximate to the rotor and having a pair of forward facing inner edges, and a torque member slidably mounted on the torque member, each of the inner edges a torque transmitting portion adjacent to the inner edge, one of the torque transmitting portions cooperating with the corresponding inner edge;
Friction limits the gap when applying the brake when the rotor rotates in one direction, but closes the gap when applying the brake when the rotor rotates in the opposite direction and transmits the brake torque to the tonoshift member. a drive device for engaging the friction element with the corresponding friction surface, and a noise prevention device including an annular elastic body spaced apart from the gap force, the annular The body has an axis extending substantially parallel to the corresponding inner edge of the torque member and a pair of edges, from which a pair of lattice shaped legs extend into the gap. The elasticity of the trunk expands the legs so that one of the legs engages the corresponding inner edge, and the other of the legs engages the one torque transmitting portion. the other leg extending substantially parallel to the torque transmitting portion and terminating at a right angle to the other portion of the leg and cooperating with the annular body. delimiting a recess for accommodating the torque transmitting portion of the friction element; further, a protrusion extends from the annular body into the recess and frictionally engages the torque transmitting portion to reduce the noise. means for securing the prevention device to the torque transmitting portion, the other leg receiving the one leg when the torque transmitting portion moves toward the corresponding inner edge; 1. A disc brake, characterized in that the disc brake is configured to have an opening in which the brake torque is transmitted through the legs during application of the brake during rotation of the rotor in the opposite direction.