JPH0132374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc brake having an integral knuckle type support part, and more particularly to a holder spring used for assembly including a caliper and a friction pad.

Conventionally, there has been a desire to reduce the weight of brake equipment as one of the devices installed in vehicles, and various improvements and innovations have been made. A caliper that is supported so as to be movable and a friction pad that is pressed against the rotor by this caliper are assembled and supported by an integral knuckle type support part that is integrally formed with a knuckle that supports the wheel. A pin-type disc brake is also offered.

This is compared to the known separate support that is fastened to the knuckle with bolts, etc.
It is known to have a desirable configuration that is suitable for weight reduction because it has a small number of parts and has advantageous structural strength against the pressure of receiving brake torque.

By the way, the following problems occurred with the integral knuckle type disc brake having this structure. In other words, before a brake device is assembled into a vehicle, it is necessary to construct it as an assembly (assembly) made up of various parts, transport it, and install it on a line for assembly into the desired vehicle. Due to such working relationships, it is desirable that the system be suitable for handling work as one unit when a large number of parts are combined in relation to each other to form an assembly. In the above-mentioned integral knuckle type disc brake, there is nothing to connect the caliper and friction pad to each other in the assembly, making the handling work complicated.In particular, the assembly position of the brake device has a relatively large volume. If the operator had to hold the caliper and friction pad separately in their hands, the complexity of the work would be a major cause of inefficiency. be.

From this point of view, the present invention is capable of preparing a caliper and friction pad in an integral knuckle type brake device as an assembly in which the caliper and friction pad are connected and held in a predetermined relationship before being assembled to a vehicle. .

The specific features of the present invention that achieve this are: an opening that is opened radially outward across the rotor edge and extending across both sides of the rotor; An integral knuckle type in which a pair of friction pads and a caliper assembly are assembled to an integral knuckle type support part that has a pair of shoulders extending in the axial direction of the rotor and is integrated with the knuckle. In the disc brake, the assembly includes protrusions for engaging and supporting the friction pads that engage with the shoulders when assembled into the openings, on both sides of each of the pair of friction pads in the rotor circumferential direction. A holder spring is attached to the outer surface of the saddle that straddles the rotor edge of the caliper, and the extending free end of the holder spring is hooked to each of the protrusions of the friction pads, thereby connecting and suspending the pair of friction pads to the caliper. This is an integral knuckle type disc brake assembly characterized by having a structure in which the brake is held in place.

The present invention will be described below based on embodiments shown in the drawings.

Figures 1 and 2 show a disc brake assembled on a vehicle, with 1 being a knuckle that supports the wheels, and consisting of a pair of forked arms extending near the edge of the rotor 3. A support portion 2, 2 is formed on one side of the rotor 3. The support portions 2, 2 extend across the radially outward position of the rotor edge to the opposite side of the rotor 3,
On both sides of the rotor 3, inner and outer friction pads 4 and 5 are housed between a pair of left and right support parts 2 and 2, and these friction pads 4 and 5 have ears formed at their left and right upper corners. 4a,
The rotor is supported movably in the axial direction by being hooked and supported by the support parts 2, 2 at 4a, 5a, 5a.

A caliper 6 is disposed so as to straddle the edge of the rotor, and is supported movably in the axial direction of the rotor by the support portions 2, 2 via a pair of left and right sliding support devices 7, 8. This caliper clamps the pair of friction pads 4 and 5 to the rotor by the operation of a pad pressing mechanism (not shown) housed in a leg located on one side of the rotor 3 and by the movability in the axial direction of the rotor. It is placed so that it is pressed.

Numeral 9 is a pad spring inserted between the caliper 6 and the friction pads 4 and 5 to prevent backlash.

The feature of the present invention is that in the disc brake having such a configuration, before it is assembled to the vehicle, that is, before the friction pads 4, 5 and the caliper 6 are assembled to the support parts 2, 2 of the integral knuckle, These friction pads 4, 5 and caliper 6
A special feature is the holder spring that allows it to be handled as a set.

FIGS. 3A and 3B show an embodiment of the holder spring 10, 10 of this example, which is made of a bent wire spring material, and is usually fitted into an opening 6a formed in the center of the saddle of the caliper 6. The free end of the spring material is bent into a V-shape with the joining part 10a as the center,
A bent portion 10b for hooking and suspending the ears 4a, 5a of the friction pads 4, 5 is provided at the tip thereof.

Holder springs 1 are attached to the left and right ears 4a and 5a of the friction pads 4 and 5, respectively.
The bent part 10b of 0 is hooked, and the fitting engagement part 1
0a into the opening 6a of the caliper 6,
These friction pads 4 and 5 are suspended by a caliper 6.

According to such a configuration, the friction pads 4 and 5 can be handled integrally with the caliper 6 by the holder springs 10 and 10 that engage with the outer surface of the saddle portion of the caliper 6, making it possible to assemble the pads into the vehicle. Effective in improving attachment workability.

Regarding the holder spring 10 of this example,
Since the pair of left and right holder springs 10, 10 can be configured so that their free ends engage with the opposing surfaces of the opposing friction pads 4, 5,
If the approach of these friction pads 4 and 5 is stopped by the spring force of the wire spring material, there is also the advantage that it becomes possible to naturally provide a gap equal to the thickness of the rotor when assembling it into a vehicle. Furthermore, in the case of the type in which the pad spring for preventing backlash shown in FIGS. 1 and 2 is inserted between the caliper and the friction pad, the engagement and holding relationship between these by the holder spring becomes even more stable. It turns out.

4A and 4B, the holder spring of the embodiment shown in FIG. 3 is connected by a connecting member made of a thin plate, so that it is prevented from fitting into the opening 6a of the caliper 6. An example is shown, and in this case, the left and right holder springs 1
Since the pads 0' and 10' are connected to each other, they are configured to circumferentially wrap the saddle of the caliper together with the friction pads 4 and 5, which has the advantage of reducing the risk of them falling off.

FIG. 5 shows that the left and right holder springs 10'', 1
Although there is a difference in that the 0'' is fixed by welding at the center, the effect is almost the same.

FIGS. 6A and 6B and FIG. 7 show that the holder springs 12, 12 alone are attached to the friction pad 4 on the inner side or the outer side, in contrast to the above-described embodiments.
or 5's left and right ear parts 4a, 4a or 5a, 5a, each of these holder springs 1
2 and 12 are connected by a thin plate connecting member 13 (see Fig. 6), or the holder spring 1 is connected at the center.
Although the difference is that 2' and 12' are fixed by welding, the same effects as in the previous embodiment can be obtained.

As described above, the present invention allows an assembly in which a caliper and a friction pad are interconnected by a holder spring to be assembled to a disc brake equipped with an integral knuckle type support part, resulting in weight reduction. This type of disc brake, which has the above-desired configuration, can satisfactorily resolve the difficulties in handling as a brake assembly, and after assembly to the vehicle, it can be reinstalled by appropriately removing the holder spring. Its usefulness, such as how it can be used, is extremely great.

[Brief explanation of drawings]

1 and 2 show a disc brake having an integral knuckle type support portion to which the present invention is applied, FIG. 1 being a plan view and FIG. 2 being a front view. 3 to 7 show each embodiment of the holder spring used in the present invention, FIG. 3A is a plan view showing the assembly relationship of the caliper, friction pad, and holder spring, and FIG. 4A, 5, 6A, and 7 are respectively plan views of the holder spring, and FIGS. 4B and 6B are partial side views of each A. It is a diagram. 1: Knuckle, 2: Support part, 3: Rotor, 4, 5: Friction pad, 4a, 5a: Ear part,
6: Caliper, 6a: Opening, 7, 8: Sliding support device, 9: Pad spring, 10, 10', 1
0″: Holder spring, 10a: Fitting engagement part,
10b: bending part, 11: connecting member, 12,1
2': Holder spring, 13: Connecting member.

Claims (1)

[Claims] 1. An opening opening radially outward across the rotor edge and extending across both sides of the rotor, and an opening spaced apart from and facing each other on both sides of the rotor circumferential direction of this opening and extending in the rotor axial direction. An integral knuckle type disc brake in which an assembly of a pair of friction pads and a caliper is assembled to an integral knuckle type support part having a pair of shoulder parts and having a structure integrated with the knuckle. The three-dimensional body is provided with protrusions on both sides in the rotor circumferential direction of each of the pair of friction pads to engage and support the friction pads that engage with the shoulder portions when the three-dimensional body is inserted and assembled into the opening, A holder spring is attached to the outer surface of the saddle that straddles the edge, and the extending free ends of the holder spring are hooked to the respective projections of the friction pads, so that the pair of friction pads are connected and suspended by the caliper. An integral knuckle type disc brake assembly featuring the following.