# US 2017/0284487 A1 · Concealed dual moving disc brake

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- Number: US 2017/0284487 A1
- Document ID: US20170284487A1
- Status: Published application
- Kind: A1
- Application number: 15/265,464
- Filed: 2016-09-14
- Published: 2017-10-05
- Earliest claimed: 2016-04-01
- Assignees: Ningbo C-Star Bicycle Co., Ltd.
- Applicants: Ningbo C-Star Bicycle Co., Ltd.
- Inventors: ZHENG-JUN ZHOU
- Web page: https://patentgrep.com/patent/US20170284487A1

## CPC

- F16D 55/2265: the axial movement being guided by one or more pins {engaging bores in the brake support or the brake housing}
- F16D 55/225: the braking members being brake pads
- F16D 65/0068: {Brake calipers}
- F16D 65/0075: {assembled from a plurality of parts}
- F16D 2055/0016: {Brake calipers}
- F16D 2055/0033: {Fully-enclosing housings}
- F16D 2125/36: Helical cams, Ball-rotating ramps
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

The present invention discloses a concealed dual moving disc brake, comprising left and light calipers, static discs, moving discs, and a drawing arm and brake cable. The calipers are fixed together via a caliper-fastening screw. The static discs are riveted within the calipers. In rolling paths of the static discs, a left and a right steel ball are provided. The drawing arm is mounted inside the static discs. The brake pads are moved toward each other during braking, such that the disc is located centrally without deformation to prolong service life. Simple and easy mounting adjustment is performed, only if the brake lever is held to lock the disc brake. The drawing arm is concealed within the head cover to form a succinct and aesthetic appearance. This product is the connection between the high-end mechanical disc brake and the low-end oil pressure disc brake with significant market prospect and potential.

## Claims

### Claim 1

A concealed dual moving disc brake, characterized by comprising a left caliper, a left static disc, a left moving disc, a drawing aim, a fight moving disc, a right static disc, a right caliper and a brake cable, said left caliper and said right caliper being connected and fixed to each other via a caliper-fastening screw, said left static disc and said right static disc being riveted within said left caliper and said right caliper, respectively, a left steel ball and a right steel ball being provided in rolling paths for steel balls of said left static disc and said right static disc, respectively, said drawing arm being mounted inside said left static disc and said right static disc, said left moving disc and said right moving disc being fixed at two sides of said drawing arm via a left fastening screw for drawing arm and a right fastening screw for drawing arm, respectively, said left fastening screw for drawing arm and said right fastening screw for drawing arm being provided in circular recesses on back faces thereof with a left releasing ring and a right releasing ring, respectively, said left releasing ring and said right releasing ring being provided in center through-holes thereof with a left magnet and a right magnet, respectively, a left brake pad and a right brake pad being attracted at the bottom of said left magnet and said right magnet, respectively, said drawing arm being provided at rear side thereof with a cable-guiding jacket, said cable-guiding jacket being then provided at rear side thereof with a brake cable-regulating knob, a brake cable-fastening nut and a brake cable-fastening screw being further mounted at the top of said drawing arm, said brake cable being allowed for passing through said cable-guiding jacket, said brake cable-fastening nut and said drawing arm in turn, and then protruding away from a cable-guiding socket of said right caliper, a left plastic cover and a right plastic cover being fixed to the top of said left caliper and said light caliper via a respective plastic cover-fastening screw, respectively, a head cover being provided between said left plastic cover and said right plastic cover.

### Claim 2 (depends on 1)

The concealed dual moving disc brake according to claim 1, characterized in that said left moving disc and said right moving disc are provided thereon with a respective hexagonal step, while said drawing arm is provided thereon with hexagonal holes in cooperation with said hexagonal steps, respectively.

### Claim 3 (depends on 1)

The concealed dual moving disc brake according to claim 1, characterized in that each of said left plastic cover and said right plastic cover is provided with a slide track, said head cover being allowed for sliding into said slide tracks of said left plastic cover and said right plastic cover, so as to clad said drawing arm.

### Claim 4 (depends on 1)

The concealed dual moving disc brake according to claim 1, characterized in that the material of said drawing arm is spring steel, said drawing arm being located inside said left caliper and said right caliper.