JPH0529543Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a mechanism for preventing brake pads from falling off in disc brakes.

(Prior Art) Figures 3 to 5 show an example of a conventional disc brake, in which 1 is a torque receiving member;
are opposing rails. In order to simplify the drawing, the rail 2 in the upper half of FIG. 4 shows a type without a notch for passing the disk, and the rail 3 in the lower half shows a type with a notch 4 for passing the disk. It is shown.

Reference numeral 5 denotes a caliper slidably provided on guide pins 8 and 9 provided upright on the torque receiving member 1, 6 an actuator section, and 7 a reaction section.

Further, reference numerals 10 and 11 designate brake pads that are movably mounted on the rails 2 and 3 via pad clips 12 and 13.
It has a function of preventing body wear and vibration of the brake pads 10 and 11.

First, the shape of the pad clip 12 will be explained in detail with reference to FIG. 6. 12a is a protection part that covers the crank-shaped rail 2, 12b is a mounting piece that snaps onto the outer end surface of the rail 2, and 12c is a part of the brake pads 10, 11. This is a guide piece during installation.

Next, the shape of the pad clip 13 will be explained in detail with reference to FIG. 7.A notch 13d for passing the disk is formed in the crank-shaped protection portion 13a. 1
3b is a mounting piece that snaps onto the end face within the notch 4 of the rail 3, and 13c is a guide piece.

Pad clips 12 and 13 as described above are common, but such pad clips have a drawback in that the brake pads 10 and 11 tend to come off the rails 2 and 3 during transport or maintenance of the disc brake.

Therefore, countermeasures have been devised, such as those shown in, for example, Japanese Utility Model Application Publications No. 53-15483 and No. 57-10539.

First, the former example will be summarized with reference to FIG. 8. This is a stopper 1 that restricts the amount of movement of the brake pad so that the brake pad does not fall into the disc passage notch 14d of the pad clip 14.
4e is provided.

Next, the latter example will be summarized with reference to FIG. 9, in which a pad clip 15 is provided with stoppers 15e and 15'e for regulating the amount of movement of the brake pad in both directions of the disk axis.

(Problem to be solved by the invention) However, the former (Utility Model Application Publication No. 15483/1983)
In this case, there are the following issues.

(1) When replacing brake pads, etc., remove one guide pin 9 and then replace the other guide pin 8.
Since this is done with the caliper 5 rotated approximately 180° using the fulcrum as a fulcrum, as shown by the chain double-dashed line in FIG. 5, the brake pads will slip off the rail if the rail is tilted.

(2) When automating the assembly of a pair of brake pads to the torque receiving member, the pads must be inserted from both outer sides of the rail, which generally requires two complicated and expensive pad insertion devices.
At this time as well, the torque receiving member must be supported so as not to tilt.

In the case of the latter (Japanese Utility Model Publication No. 10539/1983), there are the following problems.

(1) This is described so that when assembling the brake pad to the torque receiving member, it is inserted between the two stoppers 15'e and 15'e. Therefore, when replacing brake pads or the like, the torque receiving member must be removed from the vehicle body or the like, otherwise the disk will get in the way and it will not be possible to remove or remove it. Further, at this time, two operations are required: lifting the stopper 15'e and moving the brake pad to the normal position.

Even if we devised a way to attach the pad clip after assembling the brake pads, the pad clip would have to be removed each time the brake pads or rubber parts are replaced periodically.
Not only is the work cumbersome, but there is also the risk of parts being lost or deformed.

(2) Since the operation of assembling the brake pads to the torque receiving member is as described in (1) above, it is difficult to automate it.

(Means for solving the problem) In order to solve the above-mentioned problem, in this invention,
In a disc brake in which a brake pad is movably mounted in the disc axis direction via a pad clip between opposing rails of a torque receiving member, the amount of sliding movement of the brake pad in both directions of the disc axis is restricted, and the brake pad is A disc brake is constructed by protruding from the pad clip a stopper that can be elastically deformed in a direction that allows passage of the brake pad when an external force is applied.

(Function) As mentioned above, in this invention, the stopper of the pad clip is elastically deformable, so even if the disc brake is tilted, the brake pad will not slip off the rail, and moreover, the brake pad will not be affected by external force (pushing force, pulling force). When force is applied, the stopper of the pad clip elastically deforms, allowing the brake pad to pass through the stopper, making it easier to attach and remove the brake pad.

Furthermore, when assembling a pair of brake pads to the torque receiving member, since the pair of brake pads can be inserted from one direction of the rail, only one pad insertion device is required, which simplifies automation. Furthermore, even when the disc is mounted on the vehicle body, the brake pads can be easily attached and detached from both directions of the rail. The pad clip according to the present invention is convenient because it is compatible with conventional pad clips.

(Embodiment) Next, a first embodiment of the present invention in which a conventional pad clip 12 is processed will be described with reference to FIGS. 1A and 1B.

That is, in this embodiment, the padded clip 11
Approximately dogleg-shaped stoppers 112e are provided at both ends of 2 to protrude.

In this case, when an external force P is applied to the brake pad, the stopper 112e is bent by an amount H of protrusion, allowing the brake pad to pass through. Once it has passed, it will not slip unless an external force is applied to the brake pads.

Next, a second embodiment of the present invention in which a conventional pad clip 13 is processed will be described with reference to FIGS. 2A and 2B.

That is, in this embodiment, the padded clip 11
3, substantially dogleg-shaped stoppers 113e are provided at both ends, and a stopper 113'e is also provided protruding from the center, and its function is the same as that of the first embodiment described above.

(Effects of the invention) As mentioned above, in the present invention, the stopper of the pad clip is made elastically deformable, so even if the disc brake is tilted, the brake pads will not slip off the rail. When adding a pulling force),
Since the stopper of the pad clip is elastically deformed and the brake pad can pass through the stopper, the brake pad can be easily attached and removed.

Furthermore, when assembling a pair of brake pads to the torque receiving member, since the pair of brake pads can be inserted from one direction of the rail, only one pad insertion device is required, which simplifies automation. Moreover, even when the disc is mounted on the vehicle body, the brake pads can be easily attached and detached from both directions of the rail. The pad clip according to the present invention is convenient because it is compatible with conventional pad clips.

As described above, according to the present invention, many practical effects can be obtained.

[Brief explanation of the drawing]

Figure 1 shows the first embodiment of the padded clip of the present invention, Figure A is a perspective view thereof, Figure B is an enlarged view taken in the direction of the arrow in Figure A, and Figure 2 is a second embodiment of the present invention. Figure A is a perspective view of the same, Figure B is an enlarged view taken in the direction of the arrow in Figure A, Figure 3 is a longitudinal sectional view showing a conventional disc brake, and Figure 4 is the same as that shown in Figure 3. The plan view, Fig. 5, is the same as Fig. 4.
6 to 9 are perspective views of various conventional pad clips. 112... Padded clip, 112e... Stopper, 113... Padded clip, 113e,
113'e...stopper.

Claims (1)

[Scope of utility model registration request] In a disc brake in which a brake pad is movably mounted in the disc axis direction via a pad clip between opposing rails of a torque receiving member, the amount of sliding movement of the brake pad in both directions of the disc axis is restricted, and the brake pad is A disc brake comprising a stopper projecting from the pad clip that can be elastically deformed in a direction that allows passage of the brake pad when an external force is applied.