CN202883840U - Brake drum of electric vehicle - Google Patents
Brake drum of electric vehicle Download PDFInfo
- Publication number
- CN202883840U CN202883840U CN 201220581127 CN201220581127U CN202883840U CN 202883840 U CN202883840 U CN 202883840U CN 201220581127 CN201220581127 CN 201220581127 CN 201220581127 U CN201220581127 U CN 201220581127U CN 202883840 U CN202883840 U CN 202883840U
- Authority
- CN
- China
- Prior art keywords
- brake drum
- reinforcing plate
- drum body
- piece
- hub bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a brake drum of an electric vehicle. The brake drum consists of an axle core, a brake drum body, a reinforcing plate and a hub bolt in a welding mode. The reinforcing plate and the inner end of the brake drum body are respectively welded and fixed with the axle core, and an accommodating space similar to a right-angled triangle is formed between the reinforcing plate and the inner end of the brake drum body so as to ensure enough strength and prevent deformation caused by axial or radial stress. The outer end of the reinforcing plate coincides with the brake drum body, and the hub bolt for installing a tire rim is plugged at the coinciding position. The outer edge of the reinforcing plate is welded and fixed with the brake drum body to form a rotary brake drum main body. A notch of the root portion of the hub bolt is embedded into an excircle step corresponding to the reinforcing plate. The hub bolt penetrates through the brake drum body and the reinforcing plate simultaneously to improve the local stress condition and avoid local deformation of the brake drum body caused by tensile force of the hub bolt.
Description
Technical field
The utility model relates to a kind of electric motor car device, is specifically related to electric vehicle brake drum.
Background technique
Electric motor car be a kind ofly adapt in small and medium-sized cities and the rural area, the environmental protection traffic tool that short distance is taken, transported, can effectively alleviate petroleum resources in short supply, reduce carbon emission, improve the town and country air quality, promote social sustainable development, approved by society.The braking device of electric motor car is the important component part of electric motor car, and at present automobile, motorcycle, electric motor car industry brake drum mostly adopt after cast iron or the aluminum alloy casting the again making method of machining; The cast iron brake drum is because relatively thick, and volume and weight is larger, and waste material and profile are coarse not attractive in appearance; Aluminum alloy brake drum poor rigidity, material expensive, cost of production are higher.
Summary of the invention
For addressing the above problem, the utility model provides a kind of electric vehicle brake drum, and it is applicable to middle-size and small-size electric motor car, motorcycle, good rigidly, work more reliable.
The utility model is achieved by the following technical solution: a kind of electric vehicle brake drum comprises by axle core, brake drum, stopping-off piece, boss bolt being welded to form; The inner of described stopping-off piece, brake drum is welded and fixed with the axle core respectively; Form the leg-of-mutton containing of approximate right angle space between the inner of described stopping-off piece and brake drum; The outer end of described stopping-off piece overlaps with brake drum, and at the boss bolt of overlapping position plug-in mounting in order to the mounting tyre steel ring; Outer rim and the brake drum of described stopping-off piece are welded and fixed, and form a jatharapanvartanasana brake drum main body.
The otch of boss bolt root embeds on the corresponding cylindrical step of stopping-off piece.
Good effect of the present utility model is: compact structure, beautiful shape; Good rigidly, intensity are large, work is more reliable; Energy saving, economical material, cost of production is low.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model structural representation.
Among the figure: 1, axle core, 2, stopping-off piece, 3, brake drum, 4, boss bolt.
Embodiment
As shown in Figure 1, a kind of electric vehicle brake drum comprises by axle core, brake drum, stopping-off piece, boss bolt being welded to form; The inner of described stopping-off piece 2, brake drum 3 is welded and fixed with axle core 1 respectively; Form the leg-of-mutton containing of approximate right angle space between the inner of described stopping-off piece 2 and brake drum 3, to ensure enough intensity, prevent axially or radial force causes distortion; The outer end of described stopping-off piece 2 overlaps with brake drum 3, and at the boss bolt 4 of overlapping position plug-in mounting in order to the mounting tyre steel ring; The outer rim of described stopping-off piece 2 and brake drum 3 are welded and fixed, and form a jatharapanvartanasana brake drum main body.
The otch of boss bolt 4 roots embeds on the corresponding cylindrical step of stopping-off piece 2.
The utility model boss bolt 4 passes brake drum and stopping-off piece simultaneously, improves the local pressure situation, avoids causing brake drum local deformation because of the pulling force of boss bolt 4.The utility model compact structure, beautiful shape; Good rigidly, intensity are large, work is more reliable; Energy saving, economical material, cost of production is low.
Claims (2)
1. an electric vehicle brake drum comprises by axle core, brake drum, stopping-off piece, boss bolt being welded to form; It is characterized in that: the inner of described stopping-off piece (2), brake drum (3) is welded and fixed with axle core (1) respectively; Form the leg-of-mutton containing of approximate right angle space between the inner of described stopping-off piece (2) and brake drum (3); The outer end of described stopping-off piece (2) overlaps with brake drum (3), and at the boss bolt (4) of overlapping position plug-in mounting in order to the mounting tyre steel ring; The outer rim of described stopping-off piece (2) and brake drum (3) are welded and fixed, and form a jatharapanvartanasana brake drum main body.
2. electric vehicle brake drum according to claim 1 is characterized in that: the otch of boss bolt (4) root embeds on the corresponding cylindrical step of stopping-off piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220581127 CN202883840U (en) | 2012-11-07 | 2012-11-07 | Brake drum of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220581127 CN202883840U (en) | 2012-11-07 | 2012-11-07 | Brake drum of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883840U true CN202883840U (en) | 2013-04-17 |
Family
ID=48075271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220581127 Expired - Fee Related CN202883840U (en) | 2012-11-07 | 2012-11-07 | Brake drum of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007243A (en) * | 2021-02-04 | 2021-06-22 | 张译 | Bimetal brake drum structure, brake drum shell and manufacturing method thereof |
-
2012
- 2012-11-07 CN CN 201220581127 patent/CN202883840U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007243A (en) * | 2021-02-04 | 2021-06-22 | 张译 | Bimetal brake drum structure, brake drum shell and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131107 |