Noise reduction type bicycle disc brake disc

Abstract

The utility model relates to the technical field of disc brake discs, and discloses a noise reduction type bicycle disc brake disc which comprises an inner disc body, a clamping groove hole is formed in the middle of the inner disc body, a plurality of first mounting holes are formed in the periphery, close to the clamping groove hole, of the middle of the inner disc body at equal intervals, and a plurality of second mounting holes are formed in the side, away from the clamping groove hole, of the inner disc body. The inner noise reduction mechanism is used for absorbing noise from the inside in the friction speed reduction process of the brake pad, the outer noise reduction mechanism is used for absorbing noise from the outside in the rotating process of the disc brake disc, and through the arrangement of the inner noise reduction mechanism, noise reduction holes and sound absorption cotton, noise generated in the inner space of the brake pad can be absorbed, and noise reduction is achieved. The material of the outer discs is not changed, the production cost is further saved, in addition, the two outer discs can be quickly mounted and dismounted through the cooperation of bolts, grooves and convex blocks, the sound-absorbing cotton is effectively replaced, and the arrangement flexibility of the sound-absorbing cotton is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to disc brake technology field, concretely is a noise reduction type bicycle disc brake. BACKGROUND

[0002] Disc brake is an important component in disc brake system, its main function is cooperation with brake pad, generates braking force through friction, makes bicycle deceleration or stop, disc brake is usually fixed on the hub of wheel, and keeps certain gap with brake pad, and noise reduction type bicycle disc brake can be mute or low noise effect when braking;

[0003] In prior art, noise reduction type disc brake usually adopts more advanced material and technology, so that its manufacturing cost is relatively higher, this leads to the price of noise reduction type disc brake usually higher than traditional disc brake, increases the purchase cost of consumer, in addition, although noise reduction type disc brake has obtained certain effect in reducing noise, but in some situations, such as emergency brake, still can produce certain noise, therefore, at present, the noise reduction effect of noise reduction type disc brake is limited;

[0004] Therefore, a noise reduction type bicycle disc brake is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a noise reduction type bicycle disc brake to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a noise reduction type bicycle disc brake, including inner disc, the inner disc middle part is equipped with the clamping groove hole, the inner disc middle part is close to the four -way equidistance of clamping groove hole and is equipped with a plurality of first installation hole, the inner disc is equipped with a plurality of second installation hole to the side of the inner disc away from clamping groove hole and tiger opens, still include:

[0007] Inner noise reduction mechanism is used to absorb noise from inside in the process of brake pad friction deceleration;

[0008] Outer noise reduction mechanism is used to absorb noise from outside in the process of disc brake rotation.

[0009] Preferably, the inner noise reduction mechanism includes an outer disc, the outer disc is provided with two, the inner side wall of one outer disc is fixedly connected to the inner disc, and the outer wall of another outer disc is detachably connected to the inner disc, a plurality of bolts are threadedly connected to the middle part of the two outer discs, and a plurality of noise reduction holes are uniformly formed in the outer wall of the two outer discs.

[0010] Preferably, the inner noise reduction mechanism further comprises a plurality of sound-absorbing cottons abutting against the plurality of sound-absorbing cottons, the plurality of sound-absorbing cottons are clamped between the two outer discs, the sound-absorbing cottons are located on the outer disc close to the noise reduction hole, a plurality of grooves are equidistantly arranged on the outer side of one of the outer discs, a plurality of protrusions are equidistantly fixedly connected to the outer side of the other outer disc, and the outer walls of the protrusions are clamped in the grooves.

[0011] Preferably, the outer noise reduction mechanism comprises a plurality of semi-arc plates fixedly connected to the middle part of the inner disc, a plurality of magic tape groups are fixedly connected to the outer side of the plurality of semi-arc plates, and a plurality of slender hairs are fixedly connected to the side of the plurality of magic tape groups away from the semi-arc plates.

[0012] Preferably, the thickness of the inner disc is consistent with the thickness of the two outer discs.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. By arranging the inner noise reduction mechanism, the noise generated in the inner space of the brake pad can be adsorbed by arranging the noise reduction hole and the sound-absorbing cotton, and the material of the outer disc is not changed, thereby saving the production cost. In addition, the two outer discs can be quickly installed and disassembled by cooperation of the bolt, the groove and the protrusion, the sound-absorbing cotton can be effectively replaced, and the flexibility of the sound-absorbing cotton arrangement is increased.

[0015] 2. By arranging the outer noise reduction mechanism, the inner disc can rotate synchronously under the action of the overall rotation of the disc brake, thereby driving the semi-arc plate and the magic tape group to rotate. The slender hairs on the magic tape group also rotate under the action of a certain centrifugal force. The side of the slender hairs away from the semi-arc plate continuously approaches the brake pad. By the characteristic that the slender hairs have many fine fibers, the noise generated on the surface of the noise reduction hole and the brake pad is further adsorbed from the outside, the noise reduction performance is improved, the magic tape group can be torn to remove and replace the slender hairs, and the long-term use is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure schematic view of the utility model;

[0017] Fig. 2 It is a rear view three-dimensional structure schematic view of the utility model;

[0018] Fig. 3 It is a structure schematic view of the sound-absorbing cotton connection of the utility model;

[0019] Fig. 4 It is a structure schematic view of the protrusion connection of the utility model.

[0020] In the drawing:

[0021] 1, outer disc; 2, inner disc; 3, first mounting hole; 4, second mounting hole; 5, clamping groove hole; 6, bolt; 7, noise reduction hole; 8, half-arc plate; 9, slender hair; 10, magic tape group; 11, sound-absorbing cotton; 12, groove; 13, protrusion. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figs. 1 to 4 An embodiment provided by the utility model: a noise reduction type bicycle disc brake, comprising an inner disc 2, a clamping groove hole 5 is formed in the middle of the inner disc 2, a plurality of first mounting holes 3 are equidistantly formed around the middle of the inner disc 2 close to the clamping groove hole 5, a plurality of second mounting holes 4 are formed on the side of the inner disc 2 far from the clamping groove hole 5, and further comprising:

[0024] An inner noise reduction mechanism for absorbing noise from the inside during the process of friction deceleration of the brake pad;

[0025] An outer noise reduction mechanism for absorbing noise from the outside during the rotation of the disc brake;

[0026] The inner noise reduction mechanism comprises two outer discs 1, the inner side wall of one outer disc 1 is fixedly connected to the inner disc 2, and the outer wall of the other outer disc 1 is detachably connected to the inner disc 2, a plurality of bolts 6 are threadedly connected to the middle of the two outer discs 1, and a plurality of noise reduction holes 7 are uniformly formed in the outer wall of the two outer discs 1;

[0027] The inner noise reduction mechanism further comprises a plurality of sound-absorbing cottons 11 abutting against each other, the sound-absorbing cottons 11 are clamped between the two outer discs 1, the sound-absorbing cottons 11 are located on the outer disc 1 close to the noise reduction holes 7, a plurality of grooves 12 are equidistantly formed on the outer side of one outer disc 1, a plurality of protrusions 13 are equidistantly fixedly connected to the outer side of the other outer disc 1, and the outer wall of the protrusions 13 is clamped in the grooves 12;

[0028] The thickness of the inner disc 2 is consistent with the thickness of the two outer discs 1 added together;

[0029] The setting of the noise reduction holes 7 and the sound-absorbing cottons 11 can absorb the noise generated in the inner space of the brake pad, and the material of the outer disc 1 is not changed, thereby saving the production cost. In addition, the two outer discs 1 can be quickly installed and detached through the cooperation of the bolts 6, the grooves 12 and the protrusions 13.

[0030] The outer noise reduction mechanism comprises a plurality of half-arc plates 8 fixedly connected to the middle part of the inner disc 2, a plurality of magic tape groups 10 fixedly connected to the outer side of the plurality of half-arc plates 8, and a plurality of slender hairs 9 fixedly connected to the side of the plurality of magic tape groups 10 away from the half-arc plates 8;

[0031] The inner disc 2 rotates, thereby driving the half-arc plates 8 and the magic tape groups 10 to rotate, and the slender hairs 9 on the magic tape groups 10 also rotate. Under the action of a certain centrifugal force, the side of the slender hairs 9 away from the half-arc plates 8 continuously abuts and approaches the brake pad, and the noise generated by the surface of the noise reduction hole 7 and the brake pad is further adsorbed from the outside due to the characteristic of the slender hairs 9 having many fine fibers.

[0032] The working principle of the above embodiment is as follows: when the bicycle starts to brake, the brake pad approaches the outer wall of the outer disc 1 and is clamped, and at this time, the hub drives the disc brake to rotate as a whole, so that the outer disc 1 rubs against the brake pad to generate noise. Through the arrangement of the noise reduction hole 7 and the sound-absorbing cotton 11, the noise generated in the internal space of the brake pad can be adsorbed, and under the action of the disc brake rotating as a whole, the inner disc 2 can rotate synchronously, thereby driving the half-arc plates 8 and the magic tape groups 10 to rotate, and the slender hairs 9 on the magic tape groups 10 also rotate. Under the action of a certain centrifugal force, the side of the slender hairs 9 away from the half-arc plates 8 continuously abuts and approaches the brake pad, and the noise generated by the surface of the noise reduction hole 7 and the brake pad is further adsorbed from the outside due to the characteristic of the slender hairs 9 having many fine fibers. Effective noise reduction is achieved, and the material of the outer disc 1 is not changed, thereby saving costs. In addition, the two outer discs 1 can be quickly installed and disassembled through the cooperation of the bolts 6, the grooves 12 and the protrusions 13, the sound-absorbing cotton 11 can be effectively replaced, and the slender hairs 9 can be removed and replaced by tearing the magic tape groups 10, which is conducive to long-term use.

[0033] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between these entities or actions. Moreover, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing bicycle disc brake, comprising an inner disc (2), characterized in that, The inner disk (2) has a slot hole (5) in the middle, and a plurality of first mounting holes (3) are equally spaced around the center of the inner disk (2) near the slot hole (5). A plurality of second mounting holes (4) are also provided on the side of the inner disk (2) away from the slot hole (5). The inner disk (2) also includes: An internal noise reduction mechanism is used to absorb noise from the inside during the brake pad friction deceleration process; External noise reduction mechanism is used to absorb noise from the outside during the rotation of the disc brake disc.

2. The noise-reducing bicycle disc brake disc according to claim 1, characterized in that: The inner noise reduction mechanism includes an outer disk (1), and there are two outer disks (1). The inner sidewall of one outer disk (1) is fixedly connected to the inner disk (2), and the outer wall of the other outer disk (1) is detachably connected to the inner disk (2). Several bolts (6) are threadedly connected to the middle of the two outer disks (1), and multiple noise reduction holes (7) are evenly opened on the outer walls of the two outer disks (1).

3. The noise-reducing bicycle disc brake disc according to claim 2, characterized in that: The internal noise reduction mechanism also includes abutting against multiple sound-absorbing cotton (11), which are sandwiched between two outer discs (1). The sound-absorbing cotton (11) is located on the outer disc (1) near the noise reduction hole (7). Multiple grooves (12) are equidistantly opened on the outer side of one outer disc (1), and multiple protrusions (13) are equidistantly fixed on the outer side of the other outer disc (1). The outer walls of the protrusions (13) are all engaged in the grooves (12).

4. The noise-reducing bicycle disc brake disc according to claim 1, characterized in that: The external noise reduction mechanism includes multiple semi-arc plates (8) fixedly connected to the middle of the inner plate (2). Each of the multiple semi-arc plates (8) is fixedly connected to a Velcro group (10), and each of the multiple Velcro groups (10) is fixedly connected to a number of long and thin hairs (9) on the side away from the semi-arc plates (8).

5. A noise-reducing bicycle disc brake disc according to claim 2, characterized in that: The thickness of the inner disk (2) is the same as the sum of the thicknesses of the two outer disks (1).

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