JPH0138350Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a disc brake device in which a caliper is slidably attached to a torque plate fixed to a vehicle body side along a guide portion.

Figure 1 shows the appearance of the entire disc brake system, with 1 being the rotor attached to the wheel hub on the wheel side, 2 being the torque plate being attached to the vehicle body side, for example, the axle housing, and 3 being being attached to this torque plate 2. This is Kyaripa.
The rotor 1 has a substantially cylindrical rotor main body 4, at one end thereof a mounting portion 5 for attachment to a wheel hub, and at the other end a disc-shaped disk 6. Also,
The caliper 3 is attached to the rotor 1 on the torque plate 2.
A retainer spring 7 is provided with a rail-shaped guide portion 2a that guides the retainer spring 7 in the axial direction, and a base end portion of a retainer spring whose free end side extends toward the caliper 3 side is fixed. Therefore, the caliper 3 is held slidably along the guide portion 2a. Furthermore, as shown in FIGS. 2 and 3, the caliper 3 has an inner pad 8 disposed opposite to the inner surface 6a of the disk 6, an outer pad 9 disposed opposite to the outer surface 6b of the disk 6, and furthermore, A cylinder 11 is provided for housing a piston 10 for moving the pads 8, 9 toward and away from the disk 6. This cylinder 11 is provided integrally with a caliper main body 12. In addition, the Caliper main body 12
A claw portion 13 facing the cylinder 11 is connected to the cylinder 11 while holding the disk 6 therebetween. Further, the inner pad 8 is attached to the piston 10 on the side of the carrier body 12 via a first pressure plate 14, and the inner pad 8 is attached to the claw portion 13 via a second pressure plate 15. Outer pad 9 is attached. During non-braking, the piston 10 in the cylinder 11 is held in a non-braking position where both pads 8 and 9 are separated from the disc 6, and during braking, hydraulic pressure is supplied to the cylinder 11 of the caliper body 12, and the piston 10 is operated to move from the non-braking position, and this piston 10
As the brake pads move, both pads 8 and 9 are brought into pressure contact with the disc 6, thereby performing a brake operation.

Incidentally, in this type of disc brake device, the caliper main body 12 is generally formed of a cast product, and the retainer spring 7 is formed of spring steel that is harder than the caliper main body 12. Therefore, the caliper main body 12 and the retainer spring 7 are damaged due to vibrations while the car is running.
When the contact portion with the retainer spring 7 wears out, the damage on the caliper body 12 side is greater than that on the retainer spring 7. When the degree of damage to the caliper main body 12 reaches its usage limit, the entire caliper 3 must be replaced, which is a troublesome task.
There was also a big problem in terms of cost.

This idea was devised in consideration of the above circumstances, and its purpose was to eliminate the need to replace the entire caliper even if the contact area between the retainer spring and the caliper body becomes worn, reducing costs. Another object of the present invention is to provide an advantageous disc brake device.

An example of this invention is shown below in Figures 5 and 6.
This will be explained with reference to the figures. In addition, Figures 5 and 6
In the figure, the same parts as in FIGS. 1 to 4 are given the same reference numerals, and the explanation thereof will be omitted. That is, this invention has a contact member 2 that contacts the free end side of the retainer spring 7 on the caliper body 12 of the caliper 3.
1 is provided in a detachable manner. This contact member 21 is a flat member, and extends over the range in which the retainer spring 7 moves when the caliper main body 12 moves along the guide portion 2a of the torque plate 2. Further, a recess 22 for accommodating the contact member 21 is formed on the side of the caliper main body 12, and the contact member 21 is fixed within the recess 22 by means such as screwing.

Therefore, in the case of the above structure, a concave portion 22 is provided in the contact portion of the caliper body 12 with the retainer spring 7, and a contact member 21 which is separate from the caliper body 12 is removably attached to this concave portion 22. Therefore, even if the contact portion between the retainer spring 7 and the contact member 21 on the caliper body 12 side wears out due to vibrations while the vehicle is running and reaches its usage limit, it is only necessary to replace the contact member 21.
Therefore, there is no need to replace the entire caliper 3 as in the conventional case, which is advantageous in terms of cost.

Note that this invention is not limited to the above embodiments. For example, it is not necessarily necessary to provide the recessed portion 22 on the caliper main body 12 side, and a structure may be adopted in which a fixing means for fixing the contact member 21, such as a screw hole, is provided. Furthermore, it goes without saying that various other modifications can be made without departing from the gist of the invention.

As explained above, according to this invention, the contact member that contacts the retainer spring is removably provided on the caliper that is slidably attached along the guide portion of the torque plate, so that the contact between the retainer spring and the caliper is prevented. Even if a portion of the caliper is worn out, it is only necessary to perform a simple operation of replacing the contact member, which is easier to perform than replacing the entire caliper, and is also advantageous in terms of cost.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the overall external appearance of the disc brake device, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a vertical sectional view showing the internal structure of the caliper, and Fig. 4 is a cross-sectional view showing the main parts of the conventional example. The plan view, FIGS. 5 and 6 show an embodiment of this invention, with FIG. 5 being a cross-sectional view of the main part, and FIG. 6 being a plan view of the same. 2...Torque plate, 2a...Guide part, 3
... Caliper, 7 ... Retainer spring, 21
...Contact member.

Claims (1)

[Scope of utility model registration request] A guide portion for guiding a caliper of a disc brake is provided on a torque plate attached to the vehicle body, and a base end portion of a retainer spring whose free end side extends toward the caliper side is fixed to the torque plate. A disc brake device in which the caliper is held slidably along the guide portion by the free end side of the spring, characterized in that the caliper is removably provided with a contact member that contacts the retainer spring. Disc brake device.