CN203067743U - Motorcycle die-casting type transmission box top cover - Google Patents
Motorcycle die-casting type transmission box top cover Download PDFInfo
- Publication number
- CN203067743U CN203067743U CN 201220679889 CN201220679889U CN203067743U CN 203067743 U CN203067743 U CN 203067743U CN 201220679889 CN201220679889 CN 201220679889 CN 201220679889 U CN201220679889 U CN 201220679889U CN 203067743 U CN203067743 U CN 203067743U
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- Prior art keywords
- die
- mounting hole
- top cover
- motorcycle
- casting
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- General Details Of Gearings (AREA)
- Extrusion Of Metal (AREA)
Abstract
The utility model belongs to the technical field of engines and particularly relates to a motorcycle die-casting type transmission box top cover. According to the motorcycle die-casting type transmission box top cover, die-casting manufacturing process is adopted in a transmission box, a body is made of aluminum alloy materials, and the wall thickness of the body is from 3.5mm to 5mm. Compared with a body of existing die-casting process, the body is thinner, therefore mass of the body is reduced, a proportion that the body accounts for is lowered when the whole transmission box is assembled, and an air hole during die-casting of the body can also be reduced. Meanwhile, reinforcing ribs are arranged on the outer surface of the body, and therefore whole strength of the body is improved. In addition, when the body is cast, an adopted die has a high precision standard and a high general standard, and therefore the die-casting type body has generality.
Description
Technical field
The utility model belongs to technical field of engines, is specifically related to motorcycle die casting formula transmission case top cover.
Background technique
At present, the top cover of transmission case all is that to select cast iron for use be material, is cast into basic technology with black.Product size does not have versatility like this, makes the assembling difficulty.And cast iron density is 7.8(gram/cubic centimetre), make that the quality of transmission case top cover is big, be assembled in the whole transmission case, the shared proportion of top cover is bigger, is unfavorable for the light-weight design of machinery.Sand casting process exists low every of manufacturing efficiency needs 7-8 minute, yields poorly, and machining allowance is big, and precision is low, and scaling loss is many, and production environment is abominable, and following process is numerous and diverse, and outward appearance such as slightly makes at defective.So now a lot of enterprises change original casting technique into extrusion process, making in the past, the top cover size of the transmission case of casting changes to some extent.
The model utility content
The utility model can provide a kind of quality light, and processing is simple, the motorcycle die casting formula transmission case top cover of highly versatile.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme: motorcycle die casting formula transmission case top cover, the body that comprises aluminum alloy, body is provided with sky gas entering opening, part mounting hole, fastening piece mounting hole, described body wall thickness is 3.5～5mm, this external surface is provided with stiffening rib, and stiffening rib is strip structure, is distributed in around sky gas entering opening, part mounting hole, the fastening piece mounting hole.
Adopt technique scheme, in the utility model, because the technology that transmission case adopts die casting to make, body is aluminum alloy material simultaneously, and the wall thickness of body is 3.5～5mm, and is thinner compared to the body of existing extrusion process, alleviated the quality of body like this, reduce body shared proportion when whole transmission case assembling, can also reduce the pore of body when die casting; Outer surface at body is provided with stiffening rib simultaneously, because die casting clearancen gas entering opening, part mounting hole, fastening piece mounting hole on the body, intensity around it can be affected, so around empty gas entering opening, part mounting hole, fastening piece mounting hole, be provided with stiffening rib, and stiffening rib is list structure, can increase the intensity at each position of body, also very attractive in appearance; Body is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body of die casting formula has versatility more.
Further, in the prior art, the body of casting, could use after boring, the tapping so the fastening piece mounting hole just must cast out step earlier because wall thickness is thicker again.In the utility model scheme, the wall thickness of body is reduced, fastening piece mounting hole and body integral die-cast get final product like this.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model motorcycle die casting formula transmission case top cover.
Embodiment
Embodiment 1:
As shown in Figure 1: motorcycle die casting formula transmission case top cover, the body 1 that comprises aluminum alloy, body 1 is provided with sky gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4, body 1 wall thickness is D, D is 3.5mm, and body 1 outer surface is provided with stiffening rib 5, and stiffening rib 5 is list structure, be distributed in around sky gas entering opening 2, part mounting hole 3, the fastening piece mounting hole 4, fastening piece mounting hole 4 and body 1 are the integrated type die castings.
In the present embodiment, because the technology that transmission case adopts die casting to make, body 1 is aluminum alloy material simultaneously, and the wall thickness of body 1 is D, D is 3.5mm, and is thinner compared to the body of existing extrusion process, alleviated the quality of body 1 like this, reduce body 1 shared proportion when whole transmission case assembling, can also reduce the pore of body 1 when die casting; Outer surface at body 1 is provided with stiffening rib 5 simultaneously, because die casting clearancen gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4 on the body 1, intensity around it can be affected, so around empty gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4, be provided with stiffening rib 5, and stiffening rib 5 is list structure, can increase the intensity at each position of body 1, also very attractive in appearance; Body 1 is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body 1 of die casting formula has versatility more; In the prior art, the body 1 of casting, could use after boring, the tapping so fastening piece mounting hole 4 just must cast out step earlier because wall thickness is thicker again.In the utility model scheme, the wall thickness of body 1 is reduced, fastening piece mounting hole 4 gets final product with body 1 integral die-cast like this.
Embodiment 2:
As shown in Figure 1: motorcycle die casting formula transmission case top cover, the body 1 that comprises aluminum alloy, body 1 is provided with sky gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4, body 1 wall thickness is D, D is 4mm, and body 1 outer surface is provided with stiffening rib 5, and stiffening rib 5 is list structure, be distributed in around sky gas entering opening 2, part mounting hole 3, the fastening piece mounting hole 4, fastening piece mounting hole 4 and body 1 are the integrated type die castings.
In the present embodiment, because the technology that transmission case adopts die casting to make, body 1 is aluminum alloy material simultaneously, and the wall thickness of body 1 is D, D is 4mm, and is thinner compared to the body of existing extrusion process, alleviated the quality of body 1 like this, reduce body 1 shared proportion when whole transmission case assembling, can also reduce the pore of body 1 when die casting; Outer surface at body 1 is provided with stiffening rib 5 simultaneously, because die casting clearancen gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4 on the body 1, intensity around it can be affected, so around empty gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4, be provided with stiffening rib 5, and stiffening rib 5 is list structure, can increase the intensity at each position of body 1, also very attractive in appearance; Body 1 is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body 1 of die casting formula has versatility more; In the prior art, the body 1 of casting, could use after boring, the tapping so fastening piece mounting hole 4 just must cast out step earlier because wall thickness is thicker again.In the utility model scheme, the wall thickness of body 1 is reduced, fastening piece mounting hole 4 gets final product with body 1 integral die-cast like this.
Embodiment 3:
As shown in Figure 1: motorcycle die casting formula transmission case top cover, the body 1 that comprises aluminum alloy, body 1 is provided with sky gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4, body 1 wall thickness is D, D is 5mm, and body 1 outer surface is provided with stiffening rib 5, and stiffening rib 5 is list structure, be distributed in around sky gas entering opening 2, part mounting hole 3, the fastening piece mounting hole 4, fastening piece mounting hole 4 and body 1 are the integrated type die castings.
In the present embodiment, because the technology that transmission case adopts die casting to make, body 1 is aluminum alloy material simultaneously, and the wall thickness of body 1 is D, D is 5mm, and is thinner compared to the body of existing extrusion process, alleviated the quality of body 1 like this, reduce body 1 shared proportion when whole transmission case assembling, can also reduce the pore of body 1 when die casting; Outer surface at body 1 is provided with stiffening rib 5 simultaneously, because die casting clearancen gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4 on the body 1, intensity around it can be affected, so around empty gas entering opening 2, part mounting hole 3, fastening piece mounting hole 4, be provided with stiffening rib 5, and stiffening rib 5 is list structure, can increase the intensity at each position of body 1, also very attractive in appearance; Body 1 is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body 1 of die casting formula has versatility more; In the prior art, the body 1 of casting, could use after boring, the tapping so fastening piece mounting hole 4 just must cast out step earlier because wall thickness is thicker again.In the utility model scheme, the wall thickness of body 1 is reduced, fastening piece mounting hole 4 gets final product with body 1 integral die-cast like this.
In the utility model scheme, the wall thickness of body 1 is D, and the span of D is between 3.5～5mm, can both reach the intensity needs of body 1.
Above-described only is preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not influence effect and practical applicability that the utility model is implemented.
Claims (2)
1. motorcycle die casting formula transmission case top cover, it is characterized in that: the body that comprises aluminum alloy, body is provided with sky gas entering opening, part mounting hole, fastening piece mounting hole, described body wall thickness is 3.5～5mm, this external surface is provided with stiffening rib, stiffening rib is strip structure, is distributed in around sky gas entering opening, part mounting hole, the fastening piece mounting hole.
2. motorcycle die casting formula transmission case top cover according to claim 1, it is characterized in that: described fastening piece mounting hole and body are the integrated type die castings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679889 CN203067743U (en) | 2012-12-11 | 2012-12-11 | Motorcycle die-casting type transmission box top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679889 CN203067743U (en) | 2012-12-11 | 2012-12-11 | Motorcycle die-casting type transmission box top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067743U true CN203067743U (en) | 2013-07-17 |
Family
ID=48766529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220679889 Expired - Fee Related CN203067743U (en) | 2012-12-11 | 2012-12-11 | Motorcycle die-casting type transmission box top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115138A (en) * | 2012-12-11 | 2013-05-22 | 重庆百吉四兴压铸有限公司 | Motorcycle pressure casting type transmission box top cover |
| CN105351502A (en) * | 2015-12-03 | 2016-02-24 | 苏州市大华精密机械有限公司 | Gear case of sweeper |
-
2012
- 2012-12-11 CN CN 201220679889 patent/CN203067743U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115138A (en) * | 2012-12-11 | 2013-05-22 | 重庆百吉四兴压铸有限公司 | Motorcycle pressure casting type transmission box top cover |
| CN105351502A (en) * | 2015-12-03 | 2016-02-24 | 苏州市大华精密机械有限公司 | Gear case of sweeper |
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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: 20130717 Termination date: 20131211 |