Wear warning device and warning system

Patent metadata

Field	Value
Publication number	US-10935094-B2
Application number	US-201916420327-A
Country	US
Kind code	B2
Filing date	May 23, 2019
Priority date	Jun 6, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

The disclosure provides a wear warning device including a caliper, two brake pads, an elastic component and a first switch. The caliper has two push parts. The two push parts are respectively disposed at a first wall surface and a second wall surface of the caliper. The brake pads are located between the two push parts. The elastic component includes two arm parts and a connection part located between the arm parts. The arm parts are respectively disposed on the brake pads. The first switch is located between the arm parts. When the brake pads are in a worn-out state and the push parts are moved toward each other to force the brake pads to clamp a brake disk and to force the two arm parts to move toward each other, one of the arm parts activates the first switch to produce a wear warning signal.

First claim

What is claimed is:

1. A wear warning device, configured to be disposed near a brake disk, comprising:
a caliper, having an accommodation space, a first wall surface, a second wall surface and two push parts, wherein the first wall surface and the second wall surface are located on two opposite sides of the accommodation space, and the two push parts are respectively disposed at the first wall surface and the second wall surface and are movable close to or away from each other;
two brake pads, located in the accommodation space and located between the two push parts, wherein the two brake pads have a non-worn-out state or a worn-out state;
an elastic component, comprising a first arm part, a connection part and a second arm part, wherein the connection part is connected to and located between the first arm part and the second arm part, and the first arm part and the second arm part are respectively disposed on the two brake pads; and
a first switch, disposed on the first arm part and located between the first arm part and the second arm part;
wherein when the two brake pads are in the non-worn-out state and the two push parts are moved toward each other to force the two brake pads to clamp the brake disk and to force the first arm part and the second arm part to move toward each other, the second arm part does not activate the first switch to produce a wear warning signal; when the two brake pads are in the worn-out state and the two push parts are moved toward each other to force the two brake pads to clamp the brake disk and to force the first arm part and the second arm part to move toward each other, the second arm part activates the first switch to produce the wear warning signal;
wherein the first arm part has a first engagement structure, the first switch has a second engagement structure, the second engagement structure is engaged with the first engagement structure.

2. The wear warning device according to claim 1 , wherein the first engagement structure comprises two positioning pawls, the two positioning pawls extend toward the second arm part, the second engagement structure comprises two positioning recesses, the two positioning pawl are respectively engaged with the two positioning recesses.

3. The wear warning device according to claim 2 , wherein the first engagement structure further comprises a positioning hole, the positioning hole are located between the two positioning pawls, the second engagement structure further comprises a positioning protrusion, the positioning protrusion is located between the two positioning recesses, and the positioning protrusion is inserted into the positioning hole.

4. The wear warning device according to claim 1 , further comprising a wireless transmission device, wherein the first switch is electrically connected to the wireless transmission device.

5. The wear warning device according to claim 4 , further comprising an oil inlet tube, wherein the oil inlet tube is connected to the caliper, the wireless transmission device has a mount portion, and the wireless transmission device is mount on the oil inlet tube via the mount portion.

6. The wear warning device according to claim 1 , wherein the first switch is a two-step switch; when the two brake pads are in the non-worn-out state and the two push part are moved toward each other to force the two brake pads to clamp the brake disk and to force the first arm part and the second arm part to move toward each other, the second arm part activates the first switch to produce a brake warning signal.

7. The wear warning device according to claim 1 , further comprising a second switch and an elastic contact component, wherein the second switch is disposed on the first arm part and is located between the first arm part and the second arm part, the elastic contact component is disposed on the second arm part and is located between the first arm part and the second arm part; when the two brake pads are in non-worn-out state and the two push parts are moved toward each other to force the two brake pads to clamp the brake disk and to force the first arm part and the second arm part to move toward each other, the elastic contact component activates the second switch to produce a brake warning signal.

8. The wear warning device according to claim 7 , wherein the first switch is located closer to the connection part of the elastic component than the second switch.

9. The wear warning device according to claim 7 , wherein the second switch is located closer to the connection part of the elastic component than the first switch.

10. The wear warning device according to claim 7 , wherein a distance between the first switch and the connection part of the elastic component is equal to a distance between the second switch and the connection part of the elastic component.

11. A warning system, comprising:
a brake lever, having a wear warning lamp and a brake lamp; and
the wear warning device according to claim 7 , wherein the first switch of the wear warning device is electrically connected to the wear warning lamp, and the second switch of the wear warning device is electrically connected to the brake lamp.

12. The warning system according to claim 11 , wherein the wear warning signal produced by the first switch and the brake warning signal produced by the second switch are respectively transmitted to the wear warning lamp and the brake lamp via a wireless transmission manner or a wire transmission manner.

13. The warning system according to claim 11 , further comprising a direction lamp, wherein the brake lever has two control switches, and signals respectively produced by the two control switches are transmitted to the direction lamp via a wireless transmission manner or a wire transmission manner.

14. A warning system, comprising:
a brake lever, having a wear warning lamp; and
the wear warning device according to claim 1 , wherein the first switch of the wear warning device is electrically connected to the wear warning lamp.

15. The warning system according to claim 14 , wherein the wear warning signal produced by the first switch is transmitted to the wear warning lamp via a wireless transmission manner or a wire transmission manner.

16. The warning system according to claim 14 , further comprising a direction lamp, wherein the brake lever has two control switches, and signals respectively produced by the two control switches are transmitted to the direction lamp via a wireless transmission manner or a wire transmission manner.

17. A wear warning device, configured to be disposed near a brake disk, comprising:
a caliper, having an accommodation space, a first wall surface, a second wall surface and two push parts, wherein the first wall surface and the second wall surface are respectively located on two opposite sides of the accommodation space, and the two push parts are respectively disposed at the first wall surface and the second wall surface and are movable close to or away from each other;
two brake pads, located in the accommodation space and located between the two push parts;
an elastic component, comprising a first arm part, a connection part and a second arm part, wherein the connection part is connected to and located between the first arm part and the second arm part, and the first arm part and the second arm part are respectively disposed on the two brake pads; and
a first switch, disposed on the first arm part and located between the first arm part and the second arm part;
wherein when the two push parts are moved toward each other to force the two brake pads to clamp the brake d

Assignees

• Tektro Technology Corp

Inventors

• Tsai Szu-Fang
• Huang Yu-Ming
• Lin Pao-Wen

Classifications

• F16D2055/0016

  Brake calipers · CPC title

• F16D66/025

  sensing the position of parts of the brake system other than the braking members, e.g. limit switches mounted on primary cylinders · CPC title

• F16D66/026 Primary

  indicating different degrees of lining wear · CPC title

• B60T17/22 Primary

  Devices for monitoring or checking brake systems; Signal devices · CPC title

• F16D66/028

  with non-electrical sensors or signal transmission, e.g. magnetic, optical · CPC title