JPH022990Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention This invention relates to an insertion socket for a detector plug fixed to a butt back plate when electrically detecting the amount of wear on a disc brake pad.

BACKGROUND TECHNOLOGY As shown in FIG. 4, a conventional detector plug insertion socket has a socket body formed into a thin-walled cylindrical body with a flange, and a cylindrical portion of the flange cylindrical body.
A pair of locking pieces are formed on a part of the peripheral wall portion with three edges separated, and the locking pieces are bent inside the cylindrical portion.

Problems to be Solved In the conventional insertion socket, a through mounting hole is provided in the back plate of the pad, and the flange must be press-fitted into the mounting hole on the pad mounting side. First, a work procedure is required in which the pad is attached to the pad back plate, the pad back plate with the pad attached is attached to the caliper, and the caliper is attached to the anchor plate. Additionally, since the detector plug is inserted through the opening in the opposite direction to the flange of the insertion socket, if the engagement between the locking piece of the detector plug and the insertion socket is too tight, the insertion plug that has been press-fitted and fixed may be pulled out. It also has some problems. The object of this invention is to provide an insertion socket for a wear detector plug which solves the above-mentioned problems.

Structure of the invention Means for solving the problem In order to solve the above-mentioned problems, this invention provides a plurality of grooves passing through the insertion socket body including the flange in parallel in the axial direction. The diameter in the cross section decreases as it approaches the part.
Formed into an elastic material in a tapered shape,
After inserting into the pad back plate, insert the wear detector plug into the pad back plate, and push out the cylindrical part of the insertion socket to connect it with the through-mounting hole in the pad back plate. The insertion socket is fixed by generating mutual surface pressure on the circumferential surface, and at the same time, the locking piece of the insertion socket cylindrical portion stands up to fix the detector plug.

Embodiments Hereinafter, embodiments will be described based on the drawings.

In the figure, 1 is a pad, 2 is a pad back plate, and 3 is an insertion socket. There is an insertion socket 3 on the padded back plate 2.
A through hole 4 is provided for attaching. The pad 1 is fixed to the pad back plate 2 in a bonded manner,
Pads 1 as wear materials are pressed against the side surface of the rotating rotor to generate braking force. When the pad 1 wears out due to friction with the rotor and the tip of the detector plug 5 inserted into the socket 3 inserted into the through hole 4 of the pad back plate 2 comes into contact with the rotor,
It is designed so that the amount of wear on the pad can be detected electrically. The insertion socket 3 is formed by a collar part 6 and a cylindrical part 7 which extend slightly outward. Cylindrical part 7
A rectangular locking piece is formed by cutting off three edges of the peripheral wall, and the locking piece 8 is bent so as to rise inward toward the flange 6. In addition, a pair of opposed abutting pieces 9 are provided near the opposing openings of the flange 6 of the cylindrical part 7. The abutment piece 9 is formed into a rectangular shape with three edges in the same direction as the locking piece 8 cut off, and is bent so as to rise toward the outside of the cylindrical portion 7 . In addition, three or more grooves 10 including the flange 6 are formed in the cylindrical portion 7 so as to extend through the cylindrical portion 7 to near the opening edge facing the flange 6.
The insertion socket 3 in which the locking piece 8, the abutment piece 9, and the cut groove part 10 are formed allows the notch edges of the cut groove part 10 to overlap with each other with the locking piece 8 and the abutment piece 9 raised up. In this state, it is formed into a tapered truncated conical shape whose cross-sectional diameter decreases as it approaches the collar 6. In other words, even if the flange portion 6 is once widened to form a cylindrical shape with a flange, it is formed so that it returns to a tapered shape.
The insertion socket 3 in this state is inserted into the through hole 4 with the flange 6 facing toward the pad, as shown in FIG. In this case, when the flange 6 is positioned so as to hang over the opening edge of the through hole 4 formed in the pad back plate 2, the push-open edge of the abutting piece 9 is in contact with the flange 6 of the pad back plate 9. Form it so that it touches the opposite side.

After inserting the insertion socket 3 into the through hole 4, the detector plug 5 is inserted into the insertion socket 3 while being pressed. The insertion socket 3 expands in the radial direction and makes tight contact with the circumferential surface of the through hole 4, and the flange 6 contacts the surface of the pad back plate 2 including the opening edge of the through hole 4, and the abutting piece 9 comes into contact with the opposing surface, and at the same time, the edge of the locking piece 8 engages with the circumferential groove 11 of the detector plug 5, fixing the detector plug 5 and the insertion socket 3 so as not to disengage them, and also fixing the insertion socket 3. The pad is formed so that it does not fit or disengage from the through hole 4 of the pad back plate 2.

Effects Since this invention is constructed as claimed in the utility model registration based on the above-mentioned embodiment, there is no need to remove the butt to install the insertion socket, and there is no need to remove the caliper. It disappears.
Further, no tools such as a press are required to fix the insertion socket, making it possible to significantly improve work efficiency. The insertion socket is first fixed to the pad back plate by inserting the detector plug, and at the same time the insertion plug is fixed by the insertion socket and the locking piece, so once the insertion socket is inserted, it cannot be removed. This makes it possible to provide a mounting socket for a wear detector plug that is not practical.

[Brief explanation of the drawing]

FIG. 1 is an enlarged cross-sectional view of the insertion socket insertion part, FIG. 2 is a cross-sectional view of the insertion socket part with the detector plug inserted, and FIG. 3 is a plan view of the insertion socket. FIG. 4 is a sectional view of a conventional socket portion. 1... Pad, 2... Pad back plate, 3... Insertion socket, 4... Through hole, 5... Detector plug,
8... Locking piece, 9... Butting piece, 10... Cut groove portion.

Claims (1)

[Scope of utility model registration request] A flange part 6 and a cylindrical part 7 are provided in connection with the flange part 6, three rectangular edges are cut off from the peripheral wall of the cylindrical part 7, and the separated edges on the side of the flange part 6 are folded inward. Three rectangular edges are cut off from the locking piece 8 formed in this way, and near the opening edge of the cylindrical part 7 facing the flange 6, and the separated edges on the flange 6 side are folded outward. A plurality of cut grooves 1 are provided in the axial direction of the cylindrical portion 7 including the collar portion 6.
0, and the notch edges of the grooves 10 are overlapped to form a truncated conical cylinder shape whose cross-sectional diameter gradually decreases as it approaches the flange 6, and the pad back plate is provided with a pad 1. 2 into the through hole 4 from the flange 6, then insert the detector plug 5 from the opening opposite to the flange 6, push out the truncated conical cylindrical part 7, and expand the cylindrical part 7 of the through hole 4. At the same time, the flange portion 6 and the abutment piece 9 are used to clamp both sides of the pad back plate 2, and the locking piece 8 is engaged with the circumferential groove portion 11 of the detector plug 5. A pad wear detector plug mounting socket formed by an insertion socket 3 for fixing and engaging the detector plug 5.