CN204628375U - A kind of brake disc - Google Patents

Abstract

A brake disc, the brake disc includes: an inner disc, an outer disc installed on the outer periphery of the inner disc, the outer disc includes a braking portion and a first connecting portion located inside the braking portion, the The inner disc includes a mounting portion for mounting the brake disc on the bicycle, a second connecting portion located outside the mounting portion, and a transition between the mounting portion and the second connecting portion part, the first connecting part is mated with the second connecting part, the outer disk is arranged in parallel with the mounting part, and the first connecting part includes a plurality of first connecting parts extending inward. A connecting arm, the first connecting arm is provided with a first mounting hole, the second connecting part includes a plurality of second connecting arms extending outward, and the second connecting arm is provided with a second As for the installation hole, the first installation hole is coincident with the second installation hole and is connected by bolts.

Description

a brake disc

technical field

The utility model relates to a brake disc.

Background technique

With the development of bicycle technology becoming more and more mature and people's higher requirements for green travel, bicycles are more and more used in daily life. Therefore, researchers have invested more energy in improving bicycle performance, especially on bicycle brakes. Currently used bicycle braking devices mainly contain disc and drum types. Disc brakes are widely used due to their quick response, good stability and good heat dissipation. The brake discs in the prior art are One-piece molding, during use, due to the large friction of the outer disc, it is severely worn, and the brake disc must be replaced as a whole when replacing.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a bicycle brake disc.

In order to solve the above technical problems, the utility model takes the following technical solutions:

A disc brake disc, the brake disc includes: an inner disc, an outer disc installed on the outer periphery of the inner disc, the outer disc includes a braking part and a first connecting part located inside the braking part, the The inner disc includes a mounting portion for mounting the brake disc on the bicycle, a second connecting portion located outside the mounting portion, and connected between the mounting portion and the second connecting portion The transition part, the first connecting part is mated with the second connecting part, and the outer disk is arranged parallel to the mounting part. The first connecting part includes a plurality of first connecting arms extending inward, and the first connecting arm is provided with a first installation hole, and the second connecting part includes a plurality of second connecting arms extending outward. The connecting arm, the second connecting arm is provided with a second mounting hole, the first mounting hole coincides with the second mounting hole and is connected by bolts. The first connecting arm has an inclination angle with the diameter direction of the outer disk, the plurality of first connecting arms and the second connecting arm extend outward along the tangential direction of the outer edge of the transition part, and the plurality of first connecting arms A connecting arm and the plurality of second connecting arms are inclined in the same direction.

Preferably, the transition portion is gradually inclined from the second connecting portion to the installation portion.

Preferably, the installation portion is recessed relative to the transition portion, and the transition portion is perpendicular to the installation portion.

Preferably, the outer disk is provided with 8 first connecting arms, and the inner disk is provided with 8 second connecting arms.

Preferably, the braking part of the outer disk is provided with a plurality of through holes for increasing the frictional force of the braking part.

Preferably, the mounting portion of the inner disc has a plurality of connecting holes arranged at intervals along its circumference, and the brake disc is mounted on the wheel through the connecting holes.

Due to the implementation of the above technical solutions, the utility model has the following advantages compared with the prior art:

The inner disc and the outer disc of the utility model are not integrally formed, but fixedly connected by bolts, so that when the outer disc is damaged, only the outer disc can be replaced.

Description of drawings

The utility model is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of a kind of bicycle brake disc described in the utility model;

Fig. 2 is a side view structural schematic diagram of a bicycle brake disc described in the utility model;

Fig. 3 is a side view structural schematic diagram of another bicycle brake disc described in the utility model;

Among them: 1. Outer disc; 11. Braking part; 12. First connecting arm; 2. Inner disc; 21. Mounting part; 22. Transition part; 23. Second connecting arm; 3. Bolt.

Detailed ways

A bicycle brake disc as shown in Figures 1 to 3, the brake disc includes: an inner disc 2, an outer disc 1 installed on the outer periphery of the inner disc 2, the outer disc 1 includes a brake part 11 and is located on the inner disc 2. The first connecting part inside the brake part 11, the inner disc 2 includes a mounting part 21 for mounting the brake disc on the bicycle, a second connecting part outside the mounting part 21, a connecting In the transition part 22 between the installation part 21 and the second connection part, the first connection part is matched with the second connection part, and the outer disk 1 and the second connection part The installation parts 21 are arranged in parallel. The first connecting part includes a plurality of first connecting arms 12 extending inward, and the first connecting arms 12 are provided with first mounting holes, and the second connecting part includes a plurality of extending outwards. The second connecting arm 23 , the second connecting arm 23 is provided with a second mounting hole, the first mounting hole coincides with the second mounting hole and is connected by bolts 3 . The first connecting arms 12 have an inclination angle with the diameter direction of the outer disk 1, and the second connecting arms 23 of the plurality of first connecting arms 12 extend outward along the tangential direction of the outer edge of the transition portion 22, so The plurality of first connecting arms 12 and the plurality of second connecting arms 23 are inclined in the same direction. The transition portion 22 is gradually inclined from the second connecting portion to the installation portion 21 . In another embodiment, the installation portion 21 is recessed relative to the transition portion 22 , and the transition portion 22 is perpendicular to the installation portion 21 . Preferably, the outer disk 1 is provided with 8 first connecting arms 12 , and the inner disk 2 is provided with 8 second connecting arms 23 . The braking portion 11 of the outer disc 1 is provided with a plurality of through holes for increasing the friction force of the braking portion 11 . The mounting portion 21 of the inner disc 2 has a plurality of connecting holes arranged at intervals along its circumference, and the brake disc is mounted on the wheel through the connecting holes.

The utility model has been described in detail above, but the utility model is not limited to the above-mentioned embodiments. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (7)

1. a kind of brake disc, it is characterized in that: described brake disc comprises: inner disc, be arranged on the outer disk of described inner disc periphery, described outer disk comprises braking part and is positioned at the first joint inside described braking part, described inner disc comprises the assembly department for being installed to by described brake disc on bicycle, be positioned at the second joint outside described assembly department, be connected to the transition part between described assembly department and the second described joint, the first described joint and the second described joint in mating connection, described outer disk parallels setting with described assembly department, the first described joint comprises multiple the first link arm extended internally, the first described link arm is provided with the first mounting hole, the second described joint comprises multiple outward extending second link arm, the second described link arm is provided with the second mounting hole, the first described mounting hole and the second described mounting hole coincide and are bolted.

2. a kind of brake disc according to claim 1, it is characterized in that: the first described link arm and the diametric(al) of outer disk have an inclination angle, described the second link arm described in multiple first link arms stretches out along the outer peripheral tangent direction of transition part, and described multiple first link arm and multiple second link arm are to inclined.

3. a kind of brake disc according to claim 1, is characterized in that: described transition part tilts from the second joint gradually to described assembly department.

4. a kind of brake disc according to claim 1, is characterized in that: the transition part depression that described assembly department is relatively described, described transition part and described assembly department perpendicular.

5. a kind of brake disc according to claim 1, is characterized in that: described outer disk is provided with 8 the first link arms, and described inner disc is provided with 8 the second link arms.

6. a kind of brake disc according to claim 1, is characterized in that: the braking part of described outer disk is provided with multiple through hole for increasing braking part frictional force.

7. a kind of brake disc according to claim 1, is characterized in that: the assembly department of described inner disc has the multiple attachment holes be intervally arranged along its circumference, and described brake disc is arranged on wheel by described attachment hole.