• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A balance shaft assembly is provided to prevent a generation of air bubble in the engine oil contained in the oil pan. CONSTITUTION: A balance shaft assembly(10) is interposed between a cylinder block(20) and an oil pan(30). The balance shaft assembly includes a balance shaft carrier having a top rim(11a) coupled to the bottom of the cylinder block through a plurality of coupling members. A curved top cover(11c) is formed integrally with the top of the balance shaft carrier which is connected, in a vertical direction, to the bottom surface of the cylinder block. The top cover closes the space formed between the rims, and has a plurality of oil holes(11d) for interconnecting the cylinder block and the oil pan.
    公开号:KR20040015574A
    申请号:KR1020020047857
    申请日:2002-08-13
    公开日:2004-02-19
    发明作者:이병철
    申请人:현대자동차주식회사；
    IPC主号:
    专利说明:

    Balance shaft assembly of car
    [10] The present invention relates to a balance shaft assembly of an automobile, and in particular, in engine oil stored in the oil pan by preventing engine oil sprayed from the oil jet during engine operation by cooling the piston and then directly falling down to the oil pan. The present invention relates to a balance shaft assembly of a vehicle that can prevent bubbles from being generated in the vehicle.
    [11] In general, the balance shaft assembly 10 used to reduce the vibration generated during the operation of the engine is attached to a plurality of coupling members such as bolts (not shown) at the bottom of the cylinder block 20 as shown in FIG. While being coupled by the lower portion is installed to be located in the oil pan (30).
    [12] As shown in FIGS. 1 to 3, the balance shaft assembly 10 is installed by being coupled by a plurality of coupling members while the upper edge portion 11a is in surface contact with the bottom surface of the cylinder block 20. A balance shaft carrier 11, a balance shaft 12 rotatably installed while penetrating the balance shaft carrier 11 in a longitudinal direction, and a tip of the balance shaft 12 penetrating the balance shaft carrier 11. The driven gear 13 by the driven gear 13 coupled to the sink key 13a and the gear bolt 14a screwed into the tip of the balance shaft 12 through the driven gear 13. One end of the balance shaft carrier 11 via a plurality of gear bolts (15a) to protect the balance weight 14 and the driven gear 13 and the balance weight 14 is installed to be located in the front of the). Front cover combined with 15 and a rear cover 16 coupled to the other end of the balance shaft carrier 11 via a plurality of gear bolts 16a to protect the tail of the balance shaft 12.
    [13] Accordingly, the balance shaft assembly 10 is installed so that the driven gear 13 is connected to the crankshaft pulley via the power transmission belt, and the balance shaft 12 coupled with the driven gear 13 drives the engine. The vibration of the engine is reduced while rotating at the same speed or twice as fast as the crankshaft in the same or reverse direction.
    [14] On the other hand, when the balance shaft carrier 11 is coupled to the cylinder block 20, a through hole 11b of a predetermined size is formed on the upper side of the balance shaft carrier 11 which is connected in the longitudinal direction to the bottom surface of the cylinder block 20. The through hole 11b serves as a passage through which engine oil sprayed from the oil jet cools the piston and then flows into the oil pan 30 when the engine is operated.
    [15] However, the size of the through hole 11b formed on the upper surface of the balance shaft carrier 11 is too large (that is, the upper surface of the balance shaft carrier is opened due to the through hole), and thus the engine is operated. When the engine oil cooling the piston flows into the oil pan 30 as shown by the arrow shown in FIG. 1, the engine oil falls vertically directly to the oil surface 31 of the oil pan 30, and thus the oil pan 30. At the oil surface 31, oil droplets bounced upwards on the oil surface 31, causing air bubbles in the engine oil.
    [16] In addition, if bubbles are generated in the engine oil as described above, there is a problem that adversely affects the normal operation of the hydraulic valve clearance adjusting device, and consequently also adversely affects the performance of the vehicle.
    [17] Accordingly, the present invention has been made to solve the above problems, by forming a plurality of oil passage holes on the upper cover while integrally forming the upper cover on the upper surface of the balance shaft carrier, cooling the piston during operation of the engine When the engine oil falls freely toward the oil pan, it first falls on the upper cover of the balance shaft carrier and then flows into the oil pan surface through the oil passage hole, so that the engine oil that cooled the piston falls directly on the oil pan surface. It is an object of the present invention to provide a balance shaft assembly of a vehicle that can help the normal operation of the valve clearance adjusting device by preventing bubbles from occurring in the engine oil contained in the oil pan.
    [18] The present invention for achieving the above object, comprising a balance shaft carrier which is installed between the cylinder block and the oil pan while the upper edge portion is coupled to the bottom surface of the cylinder block via a plurality of coupling members. In the balance shaft assembly of an automobile, a top cover of a curved shape which seals the space between the edges is integrally formed on the upper side of the balance shaft carrier which is connected in the longitudinal direction with the bottom surface of the cylinder block, and the top cover has a cylinder Characterized in that a plurality of oil passage holes formed to connect the block and the oil pan.
    [1] 1 is a longitudinal sectional view showing a state in which a conventional balance shaft assembly is mounted on a lower portion of a cylinder block;
    [2] 2 and 3 are exploded perspective views and longitudinal cross-sectional views for explaining a conventional balance shaft assembly;
    [3] Figure 4 is a longitudinal sectional view showing a state in which the balance shaft assembly according to the invention mounted on the lower portion of the cylinder block,
    [4] 5 and 6 are exploded perspective views and longitudinal cross-sectional views for explaining the balance shaft assembly according to the present invention.
    [5] <Description of Symbols for Main Parts of Drawings>
    [6] 10-Balance Shaft Assembly 11-Balance Shaft Carrier
    [7] 11a-rim 11c-top cover
    [8] 11d-Oil passage hole 20-Cylinder block
    [9] 30-oil pan
    [19] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
    [20] Figure 4 is a longitudinal sectional view showing a state in which the balance shaft assembly according to the present invention is mounted on the lower portion of the cylinder block, will be described with the same reference numerals to the same parts as the conventional structure.
    [21] The balance shaft assembly 10 according to the present invention is coupled to the bottom of the cylinder block 20 by a plurality of coupling members such as bolts (not shown), as shown in FIG. It is installed so as to position, it serves to reduce the vibration generated during the operation of the engine.
    [22] That is, the balance shaft assembly 10 is a cylinder block by a plurality of coupling members while the upper edge portion 11a is in surface contact with the bottom surface of the cylinder block 20, as shown in Figs. The balance shaft carrier 11 is installed in combination with the 20, the balance shaft 12 is rotatably installed while penetrating the balance shaft carrier 11 in the longitudinal direction, and passes through the balance shaft carrier 11. A driven gear 13 coupled to the tip of one balance shaft 12 via a sink key 13a and a gear bolt 14a screwed into the tip of the balance shaft 12 through the driven gear 13. Balance weight 14 is installed to be located on the front of the driven gear 13 by a), and the plurality of gear bolts (15a) to protect the driven gear 13 and the balance weight (14) through the To one end of the balance shaft carrier 11 Composed of the front cover 15 and the rear cover 16 coupled to the other end of the balance shaft carrier 11 via a plurality of gear bolts 16a to protect the rear end of the balance shaft 12. do.
    [23] Here, when the balance shaft carrier 11 is coupled to the cylinder block 20, the upper surface of the balance shaft carrier 11 which is connected in the longitudinal direction with the bottom surface of the cylinder block 20 has a constant curved shape according to the present invention. Branch top cover (11c) is formed integrally, the abnormal end cover (11c) is formed integrally along the upper edge portion (11a) of the balance shaft carrier (11) and the edge portion (11a) and the edge portion (11a) The space between them is sealed, and thus the cylinder block 20 and the oil pan 30 are blocked from each other by the top cover 11c according to the present invention.
    [24] In addition, a plurality of oil passage holes 11d connecting the cylinder block 20 and the oil pan 30 to the upper cover 11c are formed at regular intervals, and the oil passage holes 11d are formed in the engine. In operation, the engine oil sprayed from the oil jet cools the piston and then acts as a passage when it flows into the oil pan 30.
    [25] On the other hand, the reference numeral 31 shown in Figure 4 shows the oil surface of the engine oil contained in the oil pan (30).
    [26] Therefore, when the engine oil sprayed from the oil jet during the operation of the engine cools the piston and then passes through the cylinder block 20 and falls into the oil pan 30, first, the upper cover of the balance shaft carrier 11 according to the present invention ( 11c), and then the engine oil dropped on the top cover 11c flows along the curved surface of the top cover 11c and flows into the oil pan 30 through the oil passage hole 11d.
    [27] In this way, the engine oil cooling the piston falls freely to the top cover 11c of the balance shaft carrier 11 and then flows along the curved surface of the top cover 11c, and then flows through the oil passage hole 11d. The structure of the present invention introduced into 30) is, as described above with reference to FIGS. 1 to 3, compared to the conventional structure in which the engine oil cooled the piston directly falls vertically onto the oil surface 31 of the oil pan 30, The magnitude of potential energy and kinetic energy of the engine oil freely falling into the oil surface 31 of the oil pan 30 is greatly reduced, and thus the engine oil may fall to the oil surface 31 of the oil pan 30. When the engine oil contained in the oil pan 30 is splashed to the upper side of the oil surface 31 can be prevented.
    [28] In addition, when the engine oil cooled by the piston flows into the oil pan 30 via the upper cover 11c according to the present invention, when the splashing phenomenon of the engine oil contained in the oil pan 30 is eliminated, the oil Not only can solve the conventional problem that bubbles are generated in the engine oil contained in the fan 30, but also help the normal operation of the hydraulic valve clearance adjusting device, and consequently help to improve the performance of the vehicle. You can also expect benefits.
    [29] As described above, according to the present invention, an upper cover having a plurality of oil passage holes is integrally formed on the upper side of the balance shaft carrier constituting the balance shaft assembly, and the engine oil cooling the piston during operation of the engine is the upper cover. By entering the oil pan through the oil pan, bubbles are prevented from occurring in the engine oil contained in the oil pan when the engine oil falls to the oil surface of the oil pan, and thus the normal operation of the hydraulic valve clearance adjusting device and the overall performance of the vehicle. It will also help you.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] Balance shaft carrier 11 is installed between the cylinder block 20 and the oil pan 30 while the upper edge portion 11a is coupled to the bottom of the cylinder block 20 via a plurality of coupling members. In the balance shaft assembly of the vehicle comprising a,
    On the upper side of the balance shaft carrier 11 which is connected in the longitudinal direction and the bottom surface of the cylinder block 20, a curved top cover 11c is formed integrally to seal the space between the edge portion 11a, The upper cover (11c) balance shaft assembly of the vehicle, characterized in that a plurality of oil passage holes (11d) connecting the cylinder block 20 and the oil pan (30) is formed.
    [2" claim-type="Currently amended] According to claim 1, The upper cover (11c) is the engine oil cooling the piston during operation of the engine falls freely fall, the engine oil dropped on the upper cover (11c) along the curved surface of the upper cover (11c) Balanced shaft assembly of the vehicle, characterized in that flowing through the oil passage hole (11d) flows into the oil pan (30).
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-08-13|Application filed by 현대자동차주식회사
    2002-08-13|Priority to KR1020020047857A
    2004-02-19|Publication of KR20040015574A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020020047857A|KR20040015574A|2002-08-13|2002-08-13|balance shaft assembly of car|
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