Noise reduction type lightweight safety hub

Abstract

The utility model discloses a noise reduction type light weight safety hub which comprises a rim and a spoke, vitex strips are arranged on one side of the inner wall of the rim, the vitex strips comprise a first vitex strip and a second vitex strip, an installation hole is formed in the inner wall of the rim, a sound nozzle is arranged in the installation hole and comprises a fixing end and a noise reduction end, the two ends of the spoke are in a U shape, and the two ends of the spoke are connected through a connecting rod. A first welding end and a second welding end are arranged at the two ends of the spoke, and a hollow cavity is formed between the rim and the spoke; the automobile hub has the advantages that the conditions of tunnels and insufficient welding caused by welding spots on the inner wall of the rim after girth welding is started are eradicated, so that the condition of air leakage caused by the fact that air pressure breaks through the inner wall of the rim is avoided, potential safety hazards in the driving process are reduced, noise reverberation generated in the hollow-out position in the driving process is reduced through the sound nozzle, and the service life of the automobile hub is prolonged. And noise is weakened to improve the driving experience.

Description

Technical Field

[0001] The utility model relates to the field of wheel hub manufacturing, in particular to a noise-reducing lightweight safety wheel hub. Background Art

[0002] At present, the wheel hub of new energy vehicles is made of the straight edges of the spoke rim and the rim spliced ​​horizontally, and fixed together by stir friction welding. After welding, the wheel hub is not only relatively heavy, which makes the vehicle consume more fuel, but also the ring-welded wheel hub has certain quality risks. When the spokes and rims of the ring-welded rims are welded to form, welding points are generated at the welding points between the rim and the spokes, which are prone to tunnels (i.e., cold welds). When the tires are added and inflated later, under the action of air pressure and driving pressure, the gas can easily break through the tunnels and welding points to cause air leakage, causing safety hazards during driving. Nowadays, wheels pursue lightweight, and a common weight reduction method is to hollow out the spokes to reduce weight without affecting the performance of the wheel hub. However, during driving, the hollow cavity will resonate due to wind resistance and the sound of friction of the wheel itself, amplifying the noise, resulting in a poor driving experience. Summary of the Invention

[0003] (1) Technical problems solved

[0004] The technical problem to be solved by the present invention is: at present, the wheel hub of new energy vehicles is relatively heavy, resulting in high fuel consumption, and the current ring welding method is prone to produce tunnels at the welding point when connecting the rim and the spokes, which will cause wheel hub leakage during driving and cause safety hazards. Moreover, nowadays, the wheel hub pursues lightweightness, and a common weight reduction method is to hollow out the spokes to reduce weight without affecting the performance of the wheel hub. However, during driving, the hollow cavity will resonate due to wind resistance and the sound of friction between the wheels themselves, thereby amplifying the noise, resulting in a poor driving experience.

[0005] (2) Technical solution

[0006] In order to solve the above problems, the present invention provides the following technical solutions:

[0007] A noise-reducing lightweight safety wheel hub comprises a rim and spokes, a rib is provided on one side of the inner wall of the rim, the rib comprises a first rib and a second rib, a mounting hole is provided in the inner wall of the rim, a sound nozzle is provided in the mounting hole, the sound nozzle comprises a fixed end and a silencer end, the two ends of the spoke are U-shaped, a first welding end and a second welding end are provided at both ends of the spoke, and a hollow cavity is provided between the rim and the spokes.

[0008] Furthermore, the first bramble and the second bramble are stepped, and the bramble and the rim are integrated.

[0009] Furthermore, the mounting hole passes through the inner wall of the rim, and the mounting hole is oblique.

[0010] Furthermore, the sound nozzle is arranged on one side of the outer wall of the rim, and one end of the sound nozzle passes through the mounting hole and is connected to the inside of the hollow cavity.

[0011] Furthermore, a plurality of the sound nozzles are set up along the outer wall of the rim, and the number of the sound nozzles is at least five.

[0012] Furthermore, the fixed end is inserted into the mounting hole by interference fit, the silencer end is made of sound-absorbing material, and the fixed end is made of aluminum.

[0013] Furthermore, the length of the first welding end is greater than that of the second welding end, the first welding end is fixedly welded to the first bramble, and the second welding end is fixedly welded to the second bramble.

[0014] (3) Beneficial effects

[0015] The beneficial effects of the utility model are:

[0016] The spokes are welded together using thorns as the welding part to avoid direct welding contact between the spokes and the inner wall of the rim, and prevent tunnels and cold welds caused by the weld points on the inner wall of the rim after the ring welding starts. As a result, air pressure will not break through the inner wall of the rim and cause air leakage, which reduces safety hazards during driving. At the same time, while hollowing out to reduce the overall weight of the wheel hub, the noise echo generated by the hollow part during driving is reduced through the sound nozzle, thereby reducing noise and improving the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a side view of the utility model;

[0019] Figure 3 It is an AA cross-sectional view of the present utility model;

[0020] Figure 4 It is an enlarged view of part B of the present utility model;

[0021] Figure 5 is a schematic diagram of the rim structure;

[0022] Markings in the figure: 1-rim, 2-spoke, 3-branch, 4-nozzle, 5-hollow cavity, 1a-mounting hole, 2a-first welding end, 2b-second welding end, 3a-first bramble, 3b-second bramble, 4a-fixed end, 4b-muffler end. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] See also Figure 1-5 The noise-reducing lightweight safety wheel hub shown in the figure includes a rim 1 and a spoke 2. A thorn 3 is provided on one side of the inner wall of the rim 1. The thorn 3 includes a first thorn 3a and a second thorn 3b. A mounting hole 1a is provided in the inner wall of the rim 1. A sound nozzle 4 is provided in the mounting hole 1a. The sound nozzle 4 includes a fixed end 4a and a silencer end 4b. The two ends of the spoke 2 are U-shaped. The two ends of the spoke 2 are provided with a first welding end 2a and a second welding end 2b. A hollow cavity 5 is provided between the rim 1 and the spoke 2.

[0026] The first brace 3a and the second brace 3b are stepped. The brace 3 is integrated with the rim 1 and is an extension of the inner wall of the rim 1. When the spoke 2 is connected to the rim 1, the first welding end 2a and the second welding end 2b of the spoke 2 are welded to the brace 3. The first welding end 2a is in contact with the first brace 3a for welding, while the second welding end 2b is welded to the second brace 3b. Figure 4 At this time, a hollow cavity 5 is formed between the spoke 2 and the rim 1 to reduce weight. Moreover, since the welding is not in direct contact with the inner wall of the rim 1, the welding point is avoided on the inner wall of the rim, thereby eliminating the occurrence of cold welds and tunnels, and preventing the subsequent tire from being added and the inflation pressure breaking through the cold welds and tunnels to cause air leakage.

[0027] Mounting hole 1a extends through the inner wall of rim 1. This hole is angled and extends through rim 1, connecting to hollow cavity 5. Due to the presence of hollow cavity 5, when the vehicle is in motion, tire friction noise is transmitted to the wheel hub and reverberates through hollow cavity 5. Noise nozzle 4 is made of the same material as the wheel hub. After transmitting noise vibrations through fixed end 4a, it is attenuated and absorbed by the top end 4b. This end 4b is made of a sound-absorbing material, such as foam or rubber, and is secured with adhesive or other means. Noise nozzle 4 is located on one side of the outer wall of rim 1. One end of the nozzle 4 extends through mounting hole 1a and connects to the interior of hollow cavity 5. Several nozzles 4 are provided along the outer wall of rim 1. There are at least five nozzles 4, and the number can be increased or decreased to improve noise reduction performance based on production needs. Fixed end 4a is inserted into mounting hole 1a with an interference fit, and silencer end 4b is made of a sound-absorbing material.

[0028] The first welding end 2a is longer than the second welding end 2b. The first welding end 2a is fixedly welded to the first bramble 3a, and the second welding end 2b is fixedly welded to the second bramble 3b.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A noise-reducing lightweight safety wheel hub, characterized in that: The invention comprises a rim (1) and a spoke (2); a thorn (3) is provided on one side of the inner wall of the rim (1); the thorn (3) comprises a first thorn (3a) and a second thorn (3b); a mounting hole (1a) is provided in the inner wall of the rim (1); a sound nozzle (4) is provided in the mounting hole (1a); the sound nozzle (4) comprises a fixed end (4a) and a mute end (4b); the two ends of the spoke (2) are U-shaped; the two ends of the spoke (2) are provided with a first welding end (2a) and a second welding end (2b); and a hollow cavity (5) is provided between the rim (1) and the spoke (2).

2. A noise-reducing lightweight safety wheel hub according to claim 1, characterized in that: The first bramble (3a) and the second bramble (3b) are in a stepped shape, and the bramble (3) and the wheel rim (1) are integral.

3. The noise-reducing lightweight safety wheel hub according to claim 1, characterized in that: The mounting hole (1a) passes through the inner wall of the rim (1), and the mounting hole (1a) is oblique.

4. The noise-reducing lightweight safety wheel hub according to claim 1, characterized in that: The sound nozzle (4) is arranged on one side of the outer wall of the rim (1); one end of the sound nozzle (4) passes through the mounting hole (1a) and is connected to the inside of the hollow cavity (5).

5. The noise-reducing lightweight safety wheel hub according to claim 1, characterized in that: A plurality of the sound nozzles (4) are arranged along the outer wall of the rim (1), and the number of the sound nozzles (4) is at least five.

6. The noise-reducing lightweight safety wheel hub according to claim 1, characterized in that: The fixed end (4a) is inserted into the mounting hole (1a) by means of interference fit, and the silencer end (4b) is made of sound-absorbing material.

7. The noise-reducing lightweight safety wheel hub according to claim 1, characterized in that: The first welding end (2a) is longer than the second welding end (2b), the first welding end (2a) is fixedly welded to the first bramble (3a), and the second welding end (2b) is fixedly welded to the second bramble (3b).

Images