Lightweight double disc brake wheel

Abstract

The utility model discloses a kind of lightweight double-disc brake wheels, including drum part, wheel rim, multiple spokes, drum part is located in the center of wheel rim, and drum part is connected between wheel rim by multiple spokes, drum part includes first end surface and second end surface, drum part is equipped with mounting hole, mounting hole is communicated first end surface and second end surface, the inside of drum part is hollow and forms cavity, the sidewall of drum part is equipped with multiple second lightening holes, second lightening hole is communicated cavity and the outside wall of drum part, the utility model uses sand core technology to make drum part hollow structure, recess is set by wheel rim and spoke connecting place, reduce raw material dosage, drum part is provided with rectangular lightening hole, does not affect structural strength under the realization of wheel hub weight reduction.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle wheel hub technology, and more specifically, to a lightweight dual disc brake wheel. Background Technology

[0002] We need to upgrade the front wheel to have dual disc brakes, with the target weight not exceeding that of the current single disc brake. To achieve dual disc brakes, the drum unit will need to be larger, and the number of studs will increase from 3 to 6. If designed as a single disc front wheel, it will inevitably be heavier than a single disc brake. We need a technical solution to change the front wheel hub from a single disc brake to a dual disc brake without increasing weight or affecting product performance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art by using a hollow drum structure to reduce the weight of the wheel hub without affecting the structural strength, thus providing a lightweight dual-disc brake wheel.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a lightweight dual-disc brake wheel, including a drum, a rim, and multiple spokes. The drum is located at the center of the rim and is connected to the rim by multiple spokes. The drum includes a first end face and a second end face, and has a mounting hole that connects the first end face and the second end face. The drum is hollow inside to form a cavity, and the side wall of the drum has multiple second weight-reducing holes that connect the cavity and the outer side wall of the drum.

[0006] Furthermore, the drum portion is provided with a first weight-reducing groove inside, which is located on the inner side of the connection between the drum portion and the spokes.

[0007] Furthermore, the rim is provided with a second weight-reducing groove, which is located on the outer side of the connection between the rim and the spokes.

[0008] Furthermore, the drum includes a central post, the mounting hole is located at the center of the central post, the central post extends out of the first end face and the second end face, both the first end face and the second end face are provided with a plurality of studs, and both the first end face and the second end face are provided with a plurality of support bars, the support bars connecting the central post and the studs.

[0009] Furthermore, the second end face is provided with a first weight reduction hole. Two first weight reduction holes are provided on both sides of the support bar. The first weight reduction holes connect the cavity and the outer surface of the first end face.

[0010] Furthermore, the wall thickness of the central column gradually decreases towards the center.

[0011] Furthermore, the middle part of the side of the drum protrudes towards the rim.

[0012] Furthermore, the drum has a triangular prism structure, with the first end face and the second end face forming a triangle. Each edge of the drum is connected to two spokes, which extend along two adjacent side faces.

[0013] The beneficial effects of this utility model are:

[0014] This utility model uses sand core technology to form a hollow structure in the drum. By setting grooves at the connection between the rim and the spokes, and between the drum and the spokes, the amount of raw materials used is reduced. The drum is provided with a rectangular second weight reduction hole, and a first weight reduction hole is provided on the second end face. The weight of the wheel hub is reduced without affecting the structural strength, thus achieving the purpose of lightweight wheel hub. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first end face direction in this embodiment.

[0016] Figure 2 This is a schematic diagram of the second end face direction in this embodiment.

[0017] Figure 3 This is a radial cross-sectional view of this embodiment.

[0018] Figure 4 This is a cross-sectional view along the axial direction of this embodiment.

[0019] Reference numerals: 1. Drum; 11. Mounting hole; 111. Center post; 12. Stud; 13. Cavity; 14. First end face; 15. Second end face; 151. Support bar; 152. First weight reduction hole; 16. Second weight reduction hole; 17. First weight reduction groove; 2. Spoke; 3. Rim; 31. Second weight reduction groove. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-4As shown, this embodiment discloses a lightweight dual-disc brake wheel, including a drum 1, a rim 3, and multiple spokes 2. The drum 1 is located at the center of the rim 3, and the drum 1 and the rim 3 are connected by multiple spokes 2. The interior of the drum 1 is hollow, forming a cavity 13. The cavity 13 of the drum 1 is made using sand core technology. The use of sand core structure can reduce the amount of raw materials used, which is beneficial for casting demolding and improves the yield. After the wheel hub is cast, the sand core can be removed to generate the cavity 13 inside the drum 1. Due to the existence of the cavity 13, the drum 1, which was originally solid when using a single disc brake, can now be made into a hollow drum 1 that can install two disc brake discs. This achieves the goal of increasing the area for installing disc brake discs on the drum 1 while ensuring that the weight of the drum 1 does not increase too much.

[0022] The drum 1 has a first weight-reducing groove 17 inside. The first weight-reducing groove 17 is located on the inner side of the connection between the drum 1 and the spoke 2. Since the connection between the spoke 2 and the drum 1 is usually rounded, the thickness of the connection will increase. In this embodiment, when the cavity 13 inside the drum 1 is sand-cast, the first weight-reducing groove 17 is formed on the inner wall of the connection between the drum 1 and the spoke 2. The first weight-reducing groove 17 can reduce the wall thickness of the drum 1 towards the center of the connection, so that the wall thickness of the connection is consistent with the normal wall thickness of the drum 1, thereby reducing the weight of the drum 1.

[0023] Similarly, the rim 3 is provided with a second weight reduction groove 31, which is located on the outer side of the connection between the rim 3 and the spoke 2. The connection between the rim 3 and the spoke 2 is also rounded and thickened. By providing a second weight reduction groove 31 that is recessed towards the spoke 2 at the corresponding location of the connection between the outer side of the rim 3 and the spoke 2, the weight of the rim 3 can be reduced, thus achieving the purpose of lightweighting.

[0024] The drum 1 includes a first end face 14 and a second end face 15. The drum 1 is provided with a mounting hole 11, which connects the first end face 14 and the second end face 15. The drum 1 includes a central column 111. The mounting hole 11 is located at the center of the central column 111. The mounting hole 11 is used to install bearings and the central shaft of the wheel. The central column 111 extends out of the first end face 14 and the second end face 15. The first end face 14 and the second end face 15 are each provided with a plurality of studs 12. The first end face 14 and the second end face 15 are provided with a plurality of support bars 151. The support bars 151 connect the central column 111 and the studs 12. The support bars 151 adopt a reinforcing rib structure, which can strengthen the structure between the studs 12 and the central column 111 and ensure the structural strength of the hollow drum 1. The wall thickness of the central column 111 gradually decreases towards the middle, reducing the material used in the central column 111, thereby achieving the purpose of lightweighting the wheel hub.

[0025] In this embodiment, the drum 1 has a triangular prism structure, with the first end face 14 and the second end face 15 forming a triangle. Each edge of the drum 1 is connected to two spokes 2, which extend along two adjacent side faces. The two spokes 2 and the rim 3 form a triangular structure. Figure 4 As can be seen from this embodiment, there are six spokes 2. The six spokes 2 are arranged in pairs to form a triangular structure with the rim 3. The triangular structure formed is diagonally opposite to the triangular structure formed by the drum 1, so that the force on the rim 3 can be transferred between all the spokes 2, making the hub structure more stable and ensuring the support strength.

[0026] The side wall of the drum 1 is provided with a plurality of second weight reduction holes 16. The second weight reduction holes 16 connect the cavity 13 and the outer side wall of the drum 1. The drum 1 includes three sides, and each side is provided with a second weight reduction hole 16. The second weight reduction hole 16 is rectangular. The setting of the second weight reduction hole 16 can reduce the weight of the drum 1 without affecting the structural strength of the drum 1, thereby achieving the purpose of lightweighting the wheel hub. The second weight reduction hole 16 also provides space for the demolding of the sand core.

[0027] The middle of the side of the drum 1 protrudes towards the rim 3. The size of the two ends of the drum 1 gradually increases towards the middle, so that the two ends of the drum 1 form two bosses towards the middle, making the structure of the drum 1 more stable, and making the first end face 14 and the second end face 15 more stable after the disc brake disc is installed.

[0028] The second end face 15 is provided with a first weight reduction hole 152. There are two first weight reduction holes 152 on both sides of the support bar 151. The first weight reduction hole 152 connects the cavity 13 and the outer side of the first end face 14. The first weight reduction hole 152 reduces the weight of the drum 1 without affecting the structural strength of the second end face 15, so as to achieve the purpose of lightweighting the wheel hub. At the same time, the first weight reduction hole 152 provides space for the sand core technology to be used during casting to connect with the casting mold.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A lightweight dual-disc brake wheel, characterized in that, The device includes a drum (1), a rim (3), and multiple spokes (2). The drum (1) is located at the center of the rim (3). The drum (1) and the rim (3) are connected by multiple spokes (2). The drum (1) includes a first end face (14) and a second end face (15). The drum (1) is provided with a mounting hole (11), which connects the first end face (14) and the second end face (15). The interior of the drum (1) is hollow to form a cavity (13). The sidewall of the drum (1) is provided with multiple second weight-reducing holes (16), which connect the cavity (13) and the outer sidewall of the drum (1).

2. The lightweight dual-disc brake wheel according to claim 1, characterized in that, The drum (1) is provided with a first weight-reducing groove (17) inside, which is located on the inner side of the connection between the drum (1) and the spokes (2).

3. The lightweight dual-disc brake wheel according to claim 1, characterized in that, The rim (3) is provided with a second weight-reducing groove (31), which is located on the outer side of the connection between the rim (3) and the spokes (2).

4. The lightweight dual-disc brake wheel according to claim 1, characterized in that, The drum (1) includes a central post (111), the mounting hole (11) is located at the center of the central post (111), the central post (111) extends out of the first end face (14) and the second end face (15), the first end face (14) and the second end face (15) are provided with a plurality of studs (12), the first end face (14) and the second end face (15) are provided with a plurality of support bars (151), and the support bars (151) connect the central post (111) and the studs (12).

5. A lightweight dual-disc brake wheel according to claim 4, characterized in that, The second end face (15) is provided with a first weight reduction hole (152). Two first weight reduction holes (152) are provided on both sides of the support bar (151). The first weight reduction hole (152) connects the cavity (13) and the outer side of the first end face (14).

6. The lightweight dual-disc brake wheel according to claim 4, characterized in that, The wall thickness of the central column (111) gradually decreases towards the center.

7. The lightweight dual-disc brake wheel according to claim 1, characterized in that, The middle part of the side of the drum (1) protrudes toward the rim (3).

8. The lightweight dual-disc brake wheel according to claim 1, characterized in that, The drum (1) has a triangular prism structure, the first end face (14) and the second end face (15) are triangular, and each edge of the drum (1) is connected to two spokes (2), which extend along the direction of two adjacent sides respectively.

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