JP2570648Y2 - Mounting structure of brake pad wear detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a brake pad wear detector in a disk brake of an automobile or the like.

[0002]

2. Description of the Related Art A detector (generally called a probe) is mounted at a wear limit position of a brake pad lining to detect wear of the lining, and a break in the detector is electrically detected by a change in voltage to detect wear. There are known ways to do this. The above-mentioned detector needs to be easily mounted as required, and needs to be mounted so that abrasion detection can be stably performed. Various mounting structures have been proposed. One example is shown in FIG.

The illustrated detector mounting structure has a lining 11
The notch 13 in a part of the back plate 12 of the brake pads together span the backplate 12 provided in the clip 14 to the notch 13
The probe 15 is inserted from the outer periphery of the pad in the radial direction of the disc brake across the pad. The notch 13 is provided with a step on the inner side thereof, and the step of the clip 14 is engaged with the step to serve as a stopper.

[0004]

The detector mounting structure of the prior art described above is excellent in design and arrangement especially for an opposed brake.

[0005] However, since the clip used in the mounting structure is formed so as to fit entirely within the notch so as to entirely surround the lower half portion of the probe, a gap is formed in the fitting portion. I can not avoid backlash against the notch. Therefore, there is a problem that the wear cannot be detected in a stable state as the wear detecting action.

[0006] In this invention, attention is paid to the problem of such a conventional wear detector mounting structure, and a detector inserted into a notch formed in a back plate of a brake pad is locked by a clip of an elastic member. It is an object of the present invention to provide a mounting structure having a simple structure that can be mounted securely and easily and easily.

[0007]

According to the present invention, a notch for mounting a wear detector at an appropriate position on a back plate of a brake pad is provided in a radial direction of a disc brake from an outer periphery of the brake pad. The notch is provided so that it can be inserted into the notch, and a guide edge that engages with the groove provided in the detector insertion direction is formed on the back plate, and this notch is elastically engaged with the mounted detector. The elastic clip is formed by connecting two band-shaped elastic members having a substantially U-shaped cross section and having a protrusion at one end, and the protrusion of the clip is engaged with one side of the notch. The mounting structure of the brake pad wear detector is formed by forming a stepped portion.

[0008]

In the detector mounting structure according to the present invention having the above-described structure, the detector is inserted into the notch in the back plate with an elastic clip. The lower end of the elastic clip is inserted by pushing the lower end of the elastic clip so as to sandwich the back plate. As a result, the elastic clip engages with the notch step at the lower end and is inserted into the back plate, and the detector is always held in a stable position because the detector is elastically pressed against the back plate. Is done.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view in which a probe is mounted on the wear detector mounting structure of the embodiment. As shown in the drawing, the probe X is elastically engaged with a clip 4 in a notch 3 provided at an appropriate position on the back plate 2 of the brake pad in which the back plate 2 is adhered to the lining 1 and mounted.

As shown in FIG. 2, the probe X is formed by bending a lead wire L into a U-shape inside and integrally molding the same with resin, as shown in FIG. A guide groove S for mounting is formed. As shown in FIG. 6, the notch 3 is provided so that the probe X can be inserted into the back plate 2 from the outer periphery of the brake pad in the radial direction of the disc brake and can be mounted. It is formed so that a linear shape and a curved shape are overlapped. Linear guide edge 3 of back plate 2
The thickness of “a” corresponds to the width of the guide groove S of the probe X. The curved notch 3b is provided on one side of the back plate 2, and a notch step 3c is formed in a part thereof.

As shown in FIG. 2B, the clip 4 has a projecting portion 4b at an end of a band-shaped elastic member 4a having a substantially U-shaped cross section, and the two portions are connected by a connecting portion 4c. Consists of Although the connecting portion 4c connects the two at the lower end of the elastic member 4a as shown in the figure, the connecting portion 4c may be connected at another appropriate position. The protrusion 4b engages with a notch step 3c formed on the back plate 2.

FIGS. 3, 4, and 5 show details of a state where the probe X is assembled to the above-mentioned mounting structure.

When the probe X is mounted on the wear detector mounting structure of the embodiment configured as described above, the probe X is elastically engaged with the back plate. In assembling, the groove S of the probe X in FIG. 2A is inserted along the guide edge 3a of the notch 3 in FIG. 6, and the clip 4 is pushed in from above to lock the probe X. At this time, the projection 4b of the clip 4 is
In order to engage with c, when the clip 4 is pushed and spread, the clip 4 is inserted across the back plate 2 and the both ends are free.

Thus, the clip 4 is attached to the back plate 2 by the projection 4b.
And the clip 4 is firmly fixed to the back plate 2 and a part of the band of the clip 4 comes into contact with a part of the top of the probe X so that the probe X is moved in the direction opposite to the insertion direction. Since the escape is prevented, the probe X is also locked.

If it is desired to remove the probe X for any reason, the probe X and the clip 4 can be easily removed from the back plate by pushing the lower end of the clip 4 open. In the above embodiment, the shape of the clip 4 uses a band-shaped member. However, the clip 4 has a projection 4b at an end thereof, and the back plate 2 can be elastically sandwiched in a U-shaped cross section. It will be apparent to those skilled in the art that various shapes other than those described above can be adopted.

[0016]

As described in detail above, the wear detector mounting structure according to the present invention includes an elastic clip which locks a detector inserted into a notch formed on a back plate of a brake pad, and a single side of the notch. The protrusion can be freely inserted into the notch step formed in the elastic clip, so that the detector can be easily and securely locked simply by expanding and pushing in both ends of the elastic clip, and economical which can prevent backlash. Therefore, there is an advantage that a mounting structure having a simple configuration can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a wear detector mounting structure according to an embodiment.

FIG. 2 is a perspective view of a probe and a clip.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view of the above.

FIG. 5 is a side view of the above.

FIG. 6 is a detailed view of a notch.

FIG. 7 is an exploded perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lining 2 Back plate 3 Notch 3a Guide edge 3b Notch 3c Notch step 4 Clip X Probe S Guide groove

Claims (1)

(57) [Scope of request for utility model registration] 1. A notch for mounting a wear detector at an appropriate position on a back plate of a brake pad is provided so as to be insertable from an outer periphery of a brake pad in a radial direction of a disc brake. A guide edge engaging with the groove provided in the insertion direction is formed on the back plate, and an elastic clip for elastically engaging the notch with the mounted detector is provided. This elastic clip has a substantially U-shaped cross section. Mounting of a brake pad wear detector, comprising a belt-shaped two-piece elastic member having a protrusion at one end and having a step formed on one side of the notch to be engaged with a protrusion of a clip. Construction.