A Cam Assembly With A Modified Camshaft

Bosch Limited
Withdrawn App No 202141002748 Mechanical Engineering

Patent information

IP India · live record
Application number
202141002748
Filing date
20 January 2021
Status
Withdrawn
Publication number
29/2022
Publication type
INA
Invention field
Mechanical Engineering

Abstract

The CAM assembly 10 comprises a housing 12 having a roller tappet 14. The CAM assembly 10 comprises a plain shaft 16 with a step structure 18 and a cam lobe 20 having an opening 15 for accommodating the plain shaft 16. The plain shaft 5 16 is accommodated in the cam lobe 20 in such a way that, the cam lobe 20 and the plain shaft 16 forms a camshaft 22. With the above disclosed new design of the cam shaft 22, the cost on material that is used to make the cam shaft 22 (as in the conventional design) can be reduced along with the manufacturing time .The plain shaft 16 as disclosed in the 10 invention, can be reused by replacing a damaged cam lobe with new cam lobe.

Applicants

2
India
Bosch Limited Post Box No 3000, Hosur Road, Adugodi, Bangalore – 560030, Karnataka, India
Germany
Robert Bosch GmbH Feuerbach, Stuttgart, Germany

Inventors

3
India
Prasad Kumar Allareddy BasavannappaNo. 5, 7th ‘C’ cross, Jakkasandra, Koramangala 1 st block, Bangalore-560034
India
Lakshmikanth Balakrishnappa#156/10 ‘G’, 25th crs, Kempamma layout, Hulimavu, Bannergatta road, Bangalore-560076
India
Nitish Dayanand#22, Joripet, Gangamma temple street, Cubbonpet, Bangalore-560002

Claims

8
1 A CAM assembly (10) in a vehicle, said CAM assembly (10) comprising : - a housing (12) having a roller tappet (14); characterized in that: - a plain shaft (16) with a step 5 structure (18); - a cam lobe (20) having an opening (15) for accommodating said plain shaft (16), such a way that, said cam lobe (20) and said plain shaft (16) forms a camshaft (22).
2 The CAM assembly (10) as claimed in claim 1, wherein said cam lobe (20) comprises a cut-section (24) corresponding to said step structure (18) of said plain shaft (16), such that, said plain shaft (16) and said cam lobe (20) are locked into each other.
3 The CAM assembly (10) as claimed in claim 1, wherein said cam lobe (20) and said plain shaft (16) are made as separate components and said plain shaft (16) is slided into said cam lobe during assembly.
4 The CAM assembly (10) as claimed in claim 1, wherein a portion of said cam lobe 20 (20) is made to come in contact with said roller tappet (14) during operation of said CAM assembly (10).
5 The CAM assembly (10) as claimed in claim 1, comprises a first supporting element (28) positioned on an opposite side of said step structure (18) of said 25 plain shaft (16) for restricting a movement of said plain shaft (16) during said operation of said CAM assembly (10).
6 The CAM assembly (10) as claimed in claim 1, comprises a second supporting element (30) is positioned on a portion of said plain shaft (16) in proximity to 30 said opening of said cam lobe (20) for an efficient transmission of said cam shaft (22).
7 The CAM assembly (10) as claimed in claim 6, wherein said second supporting element (30) is positioned on said plain shaft (16) externally. 5
8 The CAM assembly (10) as claimed in claim 1, wherein said cam lobe (20), said plain shaft (16) and said second supporting element (30) is made of a same material , wherein said material being steel. , Description:The CAM assembly 10 comprises a housing 12 having a roller tappet 14. The CAM assembly 10 comprises a plain shaft 16 with a step structure 18 and a cam lobe 20 having an opening 15 for accommodating the plain shaft 16. The plain shaft 5 16 is accommodated in the cam lobe 20 in such a way that, the cam lobe 20 and the plain shaft 16 forms a camshaft 22. With the above disclosed new design of the cam shaft 22, the cost on material that is used to make the cam shaft 22 (as in the conventional design) can be reduced along with the manufacturing time .The plain shaft 16 as disclosed in the 10 invention, can be reused by replacing a damaged cam lobe with new cam lobe.

Specification

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Claims:1. A CAM assembly (10) in a vehicle, said CAM assembly (10) comprising : - a housing (12) having a roller tappet (14); characterized in that: - a plain shaft (16) with a step 5 structure (18); - a cam lobe (20) having an opening (15) for accommodating said plain shaft (16), such a way that, said cam lobe (20) and said plain shaft (16) forms a camshaft (22). 2. The CAM assembly (10) as claimed in claim 1, wherein said cam lobe (20) comprises a cut-section (24) corresponding to said step structure (18) of said plain shaft (16), such that, said plain shaft (16) and said cam lobe (20) are locked into each other. 3. The CAM assembly (10) as claimed in claim 1, wherein said cam lobe (20) and said plain shaft (16) are made as separate components and said plain shaft (16) is slided into said cam lobe during assembly. 4. The CAM assembly (10) as claimed in claim 1, wherein a portion of said cam lobe 20 (20) is made to come in contact with said roller tappet (14) during operation of said CAM assembly (10). 5. The CAM assembly (10) as claimed in claim 1, comprises a first supporting element (28) positioned on an opposite side of said step structure (18) of said 25 plain shaft (16) for restricting a movement of said plain shaft (16) during said operation of said CAM assembly (10). 6. The CAM assembly (10) as claimed in claim 1, comprises a second supporting element (30) is positioned on a portion of said plain shaft (16) in proximity to 30 said opening of said cam lobe (20) for an efficient transmission of said cam shaft (22). 7. The CAM assembly (10) as claimed in claim 6, wherein said second supporting element (30) is positioned on said plain shaft (16) externally. 5 8. The CAM assembly (10) as claimed in claim 1, wherein said cam lobe (20), said plain shaft (16) and said second supporting element (30) is made of a same material , wherein said material being steel. , Description:The CAM assembly 10 comprises a housing 12 having a roller tappet 14. The CAM assembly 10 comprises a plain shaft 16 with a step structure 18 and a cam lobe 20 having an opening 15 for accommodating the plain shaft 16. The plain shaft 5 16 is accommodated in the cam lobe 20 in such a way that, the cam lobe 20 and the plain shaft 16 forms a camshaft 22. With the above disclosed new design of the cam shaft 22, the cost on material that is used to make the cam shaft 22 (as in the conventional design) can be reduced along with the manufacturing time .The plain shaft 16 as disclosed in the 10 invention, can be reused by replacing a damaged cam lobe with new cam lobe.

Documents

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Application documents
1 202141002748-POWER OF AUTHORITY [20-01-2021(online)].pdf 20 Jan 2021
2 202141002748-FORM 1 [20-01-2021(online)].pdf 20 Jan 2021
3 202141002748-DRAWINGS [20-01-2021(online)].pdf 20 Jan 2021
4 202141002748-DECLARATION OF INVENTORSHIP (FORM 5) [20-01-2021(online)].pdf 20 Jan 2021
5 202141002748-COMPLETE SPECIFICATION [20-01-2021(online)].pdf 20 Jan 2021
6 202141002748-Form-1_After Filling_29-09-2021.pdf 29 Sep 2021