JPH0247772Y2 - - Google Patents

Description

[Detailed description of the invention] a. Purpose of the invention (industrial field of application) The disc brake according to this invention is used for braking automobiles.

(Prior Art) As a disc brake used for braking an automobile, one having a structure as shown in FIGS. 2 and 3 is conventionally known. This conventional disc brake is fixed to the nutcle 3 by fitting the ring-shaped attachment part 2 of the support 1 into the nutcle 3 of the automobile, and screwing a bolt (not shown) into the screw hole 4.
The two ends of the pins 5 and 5 suspended horizontally on the upper part of the support 1 are loosely connected to the inside and outside (inner means the center of the car where the disc brake is installed, that is, the right side in Fig. 3, and the outside means the right side in Figure 3). The caliper 6 is attached to the support 1 so as to be slidable toward the outer end of the vehicle, that is, toward the left in FIG. 3. (There is also a structure in which the caliper and the support are directly engaged without using a pin.) , pads 1 located on both sides of a rotor 9 connected to the hub 7 by bolts 8 inserted into the hub 7 of the wheel.
0,10, piston 1 installed in caliper 6
1 and a caliper claw 6 formed at one end of the caliper 6.
The sliding surface of the lining 13 attached to the backing metal 12 of the pad is pressed against the rotor 9 by a piston 11 pushed out by hydraulic pressure.

The support 1 supports the weight of the pad 10 and also supports the side surface of the rotor 9 and the lining 13 during braking.
In order to support the braking torque that acts on the pad 10 due to friction with the sliding surface of the support 1, and to guide the movement of the pad 10 in the inward and outward directions, a protrusion 14 that protrudes outward and downward from the peripheral wall 17 of the support 1 is provided. A guide groove 15 is provided, and a protrusion 16 of a back metal 12 is engaged with the pad 10 so that the pad 10 is supported by the support and the braking torque is supported by the support 1.

(Problems to be Solved by the Invention) However, in the case of the conventional disc brake constructed and operated as described above, the following disadvantages occur.

That is, conventionally, 1 located on both the front and back sides of the rotor 9
The protrusions 16, 16 provided at both ends of the back metal 12 of the pair of pads 10, 10, and the guide grooves 15, 15 into which the protrusions 16, 16 are slidably fitted are arranged as shown in FIG. It can be formed into a circular arc shape, a U-shape, or a fourth shape.
As shown in the figure, the pin 5 is fitted into the U-shaped notch 18 formed in the back plate 12,
The pad 10 is supported freely only in the direction of the rotation axis of the rotor 9.

In this way, the protrusions 16, 16 and the guide grooves 15, 15
If the disc brake is formed into an arc shape or a U-shape, or if a U-shaped notch 18 is formed in the back plate 12, the forming operation is troublesome and increases the manufacturing cost of the disc brake.

The disc brake of the present invention eliminates the above-mentioned disadvantages.

b. Structure of the invention (Means for solving the problem) The disc brake of the invention, like the conventional disc brake described above, has a caliper attached to a support fixed to the vehicle body inside the rotor that rotates with the wheels. A pair of pads located opposite to each other on both the inner and outer surfaces of the rotor are pressed against the rotor by means of a caliper, thereby braking the wheels via the rotor.

Furthermore, in the disc brake of the present invention, both edges of the back metal of the outer pad of the pair of pads are sloped in such a direction that the width of the back metal gradually increases toward the outer circumference of the rotor. This sloped edge is brought into contact with a support slope sloped in the same direction as the sloped edge of a locking protrusion formed on the support to support the outer side pad, and the outside of the outer side pad is A protruding piece formed on the periphery is brought into contact with a surface of the caliper facing the outer periphery of the rotor.

That is, as shown in FIG.
0 is the inclined edge 19. The direction of inclination of this inclined edge 19 is such that the width of the back metal 12 forming this inclined edge 19 gradually becomes wider as it goes toward the outer circumferential side of the rotor 9 (upper side in FIG. 1).

On the other hand, a locking protrusion 21 formed on the support 1 to support the outer pad 10 is provided with a supporting inclined surface 22 inclined in the same direction as the inclined edge 19.

The inclined edge 19 is brought into contact with the supporting inclined surface 22 so that the braking torque applied to the pad 10 during braking can be supported by the support 1.

Furthermore, a protrusion 2 is provided on the outer peripheral edge of the outer pad 10.
3, and this projecting piece 23 is brought into contact with a surface 24 of the caliper 6 facing the outer peripheral edge of the rotor 9.

(Operation) The operation of the disc brake of the present invention constructed as described above during braking is similar to that of the conventional disc brake described above, except that the outer pad 10 has an inclined edge 19 and a supporting inclined surface 22. The contact between the surface 24 and the projecting piece 23 prevents movement downward in FIG.

Further, the brake torque applied to the outer pad 10 during braking is supported by the locking protrusion 21 of the support 1.

c. Effects of the invention Since the disc brake of the invention is configured and operates as described above, it is easy to manufacture the pad backing and support, and the manufacturing cost of the disc brake can be reduced.

[Brief explanation of drawings]

Fig. 1 is an enlarged view corresponding to section A in Fig. 2 showing the disc brake of the present invention, Fig. 2 is a front view showing the first example of a conventional disc brake, and Fig. 3 is B in Fig. 2. -B sectional view, FIG. 4 is a view similar to FIG. 1 showing a second example of a conventional disc brake. 1: Support, 2: Mounting part, 3: Nutacle,
4: Screw hole, 5: Pin, 6: Caliper, 6a: Caliper pawl, 7: Hub, 8: Bolt, 9: Rotor,
10: Padded, 11: Piston, 12: Back money, 1
3: Lining, 14: Projection, 15: Guide groove, 1
6: protrusion, 17: peripheral wall, 18: notch, 19: inclined edge, 20: end edge, 21: locking protrusion, 22: supporting inclined surface, 23: protruding piece, 24: surface.

Claims (1)

[Scope of utility model registration request] A caliper is attached to a support fixed to the vehicle body inside the rotor that rotates with the wheels, and this caliper allows the sliding surfaces of the linings of a pair of pads located opposite to each other on both the inner and outer sides of the rotor to be attached to the inner and outer sides of the rotor. In a disc brake that brakes a wheel via a rotor by crimping it to a surface, the width of the back metal is on the outer circumferential side of the rotor. This sloped edge is made to be inclined in a direction in which the width gradually becomes wider toward the outside pad, and this sloped edge is formed on a support sloped surface sloped in the same direction as the sloped edge of the locking protrusion formed on the support to support the outer pad. A disc brake characterized in that a protruding piece formed on the outer periphery of the outer pad is brought into contact with a surface of the caliper facing the outer periphery of the rotor.