Axial-removable drum external-pressing brake pad device

Abstract

The challenge is to perform the removal process using only the axial movement of the brake pads. [Solution] By removing the retractable U-shaped spring pin 17, the disc pad 13 can be removed from the disc pad base 11 to which it is attached by pulling out the disc pad base removal hole 12, and when mounting a tire wheel that has a space for the disc pad 13 and the disc pad base 11 to pass through, the disc pad 13 can be attached and detached from the outside of the tire wheel.

Description

Technical Field

[0001] This invention relates to a drum outer surface pressing brake pad device that can be axially removed.

Background Art

[0002] In a conventional brake shoe - disk pad, it was not possible to remove it only by axial movement during disassembly and removal work.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, an object of this invention is to enable removal work only by axial movement of the brake pad.

Means for Solving the Problems

[0004] To solve the above problems, this invention provides a brake drum 1 with radially shaped backing material, whose outer circumference is the same as the outer circumference of the disc rotor, to the hub portion to which the conventional brake drum and disc rotor are attached. The outer surface of the brake drum 1 with radially shaped backing material is polished to match the length from the axis. Furthermore, a convex-shaped guide portion 3 is provided above the axial inner end of the brake drum 1 with radially shaped backing material, allowing the cylinder body 2, whose cylinder direction is radial, to slide between 0 and 5 degrees downward in the radial horizontal direction. A recessed grooved bar 4 is integrally molded to the knuckle 5 so that the convex-shaped guide portion 3, which is provided below and above and below it, can slide between 0 and 5 degrees downward in the radial horizontal direction. A rectangular column cylinder outer end stopper 7, which is fitted into the center of the circle of the outer end of the cylinder 6 and has a U-shape with wedge surfaces on the upper and lower inner halves, is fitted into a high-strength receiving portion 8, allowing the cylinder body 2 to move laterally. In addition, the caliper portion 9 attached to the centrifugal outer side of the cylinder body 2 is reversed from the conventional method. The caliper portion 9 is installed so that the recessed groove 10 faces each other vertically, and the caliper portion 9 extends to the outer end of the brake drum. A disc pad base 11 is inserted into the upper and lower recessed grooves 10 of the caliper portion 9 so that it can slide in. A disc pad base removal hole 12 is provided at the outer front position of the disc pad base 11, and the opposite side is located in the space between the disc pad base 11 and the outer circumference of the brake drum 1 with radial back reinforcement, and the opposite side is located in the space between the disc pad base 11 and the outer circumference of the brake drum 1 with radial back reinforcement that coincides with the outer circular arc surface of the brake drum 1 with radial back reinforcement. A disc pad 13 of the specified shape is bonded to the disc pad base 11 to form a brake drum 1 outer circumference retaining disc pad with radial back reinforcement material, and a lateral groove 14 is made in the disc pad 13 up to the position where the disc pad base removal hole 12 of the disc pad base 11 to which the disc pad 13 is attached is open, and an inverted V-shaped 1 mm diameter hole 15 is made to penetrate the recessed groove 10 from the upper part 2 mm inward in the axial direction from the position where the recessed groove 10 on the caliper part 9 into which the disc pad base 11 is inserted ends, and when the disc pad 13 is installed in the caliper part 9,A vertical cut surface 16 is created by grinding down the corner of the disc pad base 11 until the inverted V-shaped 1 mm diameter hole 15 appears in the upper recessed groove 10. A retractable U-shaped spring pin 17, which becomes U-shaped when its tip is opened, is then attached to this vertical cut surface 16 while the inverted V-shaped 1 mm diameter hole 15 is passing through it. [Effects of the Invention]

[0005] In this invention, the brake pad is configured such that a rectangular column cylinder outer end stopper 7, located at the tip of the recessed grooved bar 4 of the cylinder body 2 which is integrated with the knuckle 5 and slides within the recessed grooved bar 4, moves the reversed caliper portion 9 in the centrifugal direction. The disc pad base 11 is fixed to the caliper portion 9 by a retractable U-shaped spring pin 17 through a recessed groove 10 above the caliper portion 9, and the disc pad 13 is bonded to the disc pad base 11 in the space between the disc pad base 11 and the outer surface of the brake drum 1 with radial backing reinforcement, thereby enabling a braking effect.

[0006] In this invention, by removing the retractable U-shaped spring pin 17, the brake pad 13 can be removed only in the axial direction by pulling out the disc pad base removal hole 12 of the disc pad base 11 to which the disc pad 13 is bonded. When mounting the brake pad on a tire wheel that has a space for the disc pad 13 and the disc pad base 11 to pass through, the disc pad 13 can be attached and detached from outside the tire wheel. [Brief explanation of the drawing]

[0007] [Figure 1] An inside perspective view of this invention, without showing the hub portion. [Figure 2] Perspective view from the inside of the outer end stopper of the rectangular column cylinder. [Figure 3] External perspective view of this invention, without showing the hub portion. [Figure 4] External perspective view of the disc pad base and disc pad. [Figure 5] Shrinkable U-shaped spring pin - Cross-sectional view showing reduced shrinkage rate in the inverted V-shaped 1 mm hole. [Figure 6]A front side view of this invention, without showing the hub portion. [Modes for carrying out the invention]

[0008] This embodiment of the invention involves mounting a cylinder body 2 with a convex-shaped guide portion 3 on the knuckle 5 at the back of a brake drum 1 with radially shaped back reinforcement, attaching a high-strength receiving portion 8 to the tip of a recessed-shaped grooved bar 4, and securing the outer end 6 of the cylinder with a rectangular column cylinder outer end stopper 7. This allows the cylinder body 2 to move laterally, and a disc pad 13, having a reversed surface that matches the outer circular arc surface of the brake drum 1 with radially shaped back reinforcement, is bonded to a reversed caliper portion 9 with a recessed-shaped groove 10 attached to the cylinder body 2, forming a disc pad base. With the disc pad base 11 installed, a vertical cut surface 16 is created by grinding down the corner of the disc pad base 11 until the inverted V-shaped 1 mm diameter hole 15 appears in the upper recessed groove 10. A retractable U-shaped spring pin 17, which becomes U-shaped when its tip is opened, is attached to the vertical cut surface 16 with the inverted V-shaped 1 mm diameter hole 15 passing through it. When the retractable U-shaped spring pin 17 is removed, the disc pad base can be removed axially using the disc pad base removal hole 12 that appears from the lateral groove 14 of the disc pad 13, thus creating a drum outer surface brake pad configuration. [Explanation of Symbols]

[0009] 1. Brake drum with radial backing reinforcement. 2 Cylinder body 3. Protruding shape guide section 4. Recessed grooved bar 5 Knuckle 6. Outer end of cylinder 7. Rectangular column cylinder outer end stopper 8. High-strength support section 9 Caliper section 10 Recessed groove shape 11 Disc pad base 12 Disc pad base removal holes 13 Disc pads 14 Lateral grooves 15. Inverted V-shaped 1 mm diameter hole 16 Vertical cut surface 17. Retractable U-shaped spring pin

Claims

1. A brake drum 1 with radially shaped guide parts is installed on the hub portion where a conventional brake drum and disc rotor are attached, with radially shaped guide parts on the back and an outer circumference that is the same as the outer circumference of the disc rotor. The outer surface of the brake drum 1 with radially shaped guide parts is polished to match the length from the axis. In addition, at a position that does not contact the axial inner end of the brake drum 1 with radially shaped guide parts, a cylinder body 2 whose cylinder direction is radial is provided above and below, allowing it to slide between 0 and 5 degrees downward in the radial horizontal direction. The convex-shaped guide parts 3 provided above and below are designed to allow them to slide between 0 and 5 degrees downward in the radial horizontal direction. A recessed grooved bar 4 is integrally molded to the knuckle 5, and a rectangular column cylinder outer end stopper 7, which can be fitted into the tip of the recessed grooved bar 4 and has a U-shaped upper and lower half with wedge-shaped surfaces on the inner half, is fitted into a high-strength receiving part 8 that engages with the center of the circle of the outer end of the cylinder 6, allowing for biting pressure installation, and the caliper part 9 attached to the centrifugal outer side of the cylinder body 2 is installed in the opposite direction to the conventional design, and the shape of the caliper part 9 is such that the recessed groove 10 is positioned facing the brake drum direction in a position where the recessed grooves 10 face each other vertically, and the caliper part 9 extends to the outer end of the brake drum, thus creating a recessed grooved reverse caliper device.

2. A disc pad base 11 that can slide into the upper and lower recessed grooves 10 of the caliper portion 9 of the reverse caliper device with recessed grooves according to claim 1 is inserted, and a disc pad base removal hole 12 is provided at the outer front position of the disc pad base 11, and a disc pad 13 having a shape that is opposite to the outer circular arc surface of the brake drum 1 with radial back reinforcement is bonded to the disc pad base 11 in the space between the disc pad base 11 and the outer circumference of the brake drum 1 with radial back reinforcement, thereby forming an outer circumference retaining disc pad for the brake drum 1 with radial back reinforcement, and the disc pad base removal hole 12 of the disc pad base 11 to which the disc pad 13 is attached is open A lateral groove 14 is provided in the disc pad 13 up to the top, and a 1 mm diameter inverted V-shaped hole 15 is made through the recessed groove 10 on the caliper portion 9 into which the disc pad base 11 fits, starting from the upper part 2 mm axially inward from the position where the recessed groove 10 on the caliper portion 9 ends, and a vertical cut surface 16 is made by beveling the corner of the disc pad base 11 up to the position where the inverted V-shaped 1 mm diameter hole 15 that has passed through appears in the upper recessed groove 10 when the disc pad 13 is installed in the caliper portion 9, and a retractable U-shaped spring pin 17 that becomes U-shaped when its tip is opened is attached to the vertical cut surface 16 with the inverted V-shaped 1 mm diameter hole 15 passing through it, thus creating a drum outer surface brake pad device that can be removed axially.

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