CN111102096A

CN111102096A - Crankshaft rear oil seal seat, engine and vehicle

Info

Publication number: CN111102096A
Application number: CN201911367560.XA
Authority: CN
Inventors: 邓厚劲; 周莹; 薛德兰; 季万强; 陈志曼
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-05-05
Anticipated expiration: 2039-12-26
Also published as: CN111102096B

Abstract

The utility model relates to an oil blanket seat, engine and vehicle behind bent axle, oil blanket seat includes behind the bent axle: the rear oil seal seat body is used for being arranged at the rear end of the engine cylinder body in a sealing mode; an inner wall of the rear oil seal housing body is recessed in a direction toward an outer wall thereof to form a gear chamber for accommodating a plurality of gears mounted to a rear end of the engine block. Through set up the gear room sunken from inside to outside on the oil blanket seat behind the bent axle to this gear room is used for holding a plurality of gears of installing the engine cylinder body rear end, and the integrated level is high, has avoided setting up unnecessary spare part at the rear end of engine cylinder body, has reduced the space of arranging of engine cylinder body rear end.

Description

Crankshaft rear oil seal seat, engine and vehicle

Technical Field

The disclosure relates to the technical field of vehicle parts, in particular to a crankshaft rear oil seal seat, an engine and a vehicle.

Background

The crankshaft rear oil seal is an important part in engine design, is arranged at the rear end of an engine block and is generally fixed through bolts, and mainly provides necessary structural conditions for sealing the rear end of the crankshaft. However, the rear oil seal seat of the crankshaft in the prior art has a single structure and a single function, can only be used for sealing the rear end of the crankshaft, and has low integration level, so that redundant parts are required to be arranged at the rear end of the engine cylinder body, and the arrangement space of the rear end of the engine cylinder body is increased.

Disclosure of Invention

The utility model aims at providing an oil seal seat, engine and vehicle behind bent axle, this oil seal seat integrated level behind bent axle is high, can effectively reduce the arrangement space of engine cylinder block rear end.

In order to achieve the above object, the present disclosure provides a crankshaft rear oil seal holder, which includes: the rear oil seal seat body is used for being arranged at the rear end of the engine cylinder body in a sealing mode; an inner wall of the rear oil seal housing body is recessed in a direction toward an outer wall thereof to form a gear chamber for accommodating a plurality of gears mounted to a rear end of the engine block.

Optionally, the gear chamber includes a first chamber and a second chamber, the rear oil seal seat body has a main profile frame and a partition frame thereon, the main profile frame and the partition frame enclose the first chamber and the second chamber, and the partition frame is located between the first chamber and the second chamber, a hollow cavity is formed inside the partition frame to communicate the first chamber and the second chamber, the first chamber is used for accommodating at least one of a crankshaft timing gear, an oil pump gear, an idle gear and an air conditioner compressor gear located at the rear end of the engine block, and the second chamber is used for accommodating the rest of the crankshaft timing gear, the oil pump gear, the idle gear and the air conditioner compressor gear.

Optionally, a first through hole and a second through hole penetrating through the inner wall and the outer wall are formed in the bottom wall of the gear chamber, the first through hole is used for the rear end flange of the crankshaft timing gear to penetrate through, and the second through hole is used for the rear end flange of the idle gear to penetrate through.

Optionally, a mounting groove for accommodating the oil pump gear rear end nut is further formed in the bottom wall of the gear chamber, and a groove bottom of the mounting groove protrudes out of the outer wall.

Optionally, a lubricating oil hole is further formed in the rear oil seal seat body, one end of the lubricating oil hole is used for being communicated with an oil passage in the engine cylinder block, and the other end of the lubricating oil hole is communicated with the gear chamber.

Optionally, a lubricating oil hole is further formed in the rear oil seal seat body, one end of the lubricating oil hole is located on the inner wall of the partition frame and used for being communicated with an oil passage on the engine cylinder block, and the other end of the lubricating oil hole is communicated with at least one of the first chamber and the second chamber.

Optionally, the lubricating oil hole includes a first oil hole section, a second oil hole section and a third oil hole section which are communicated with each other, and an end of the first oil hole section is formed on an inner wall of the partition frame and is coaxial with the second oil hole section; one end of the second oil hole section is communicated with the first oil hole section, the other end of the second oil hole section is communicated with the third oil hole section, and the aperture of the second oil hole section is smaller than that of the first oil hole section; the third oil hole section is communicated with the gear chamber, and the axis of the third oil hole section is perpendicular to the axis.

Optionally, a plurality of reinforcing ribs extending in different directions are formed on the outer wall of the rear oil seal seat body, at least part of the end portions of the reinforcing ribs extend to the mounting hole of the rear oil seal seat body, and a fastener penetrates through the mounting hole to mount the rear oil seal seat body to the rear end of the engine cylinder block.

The present disclosure also provides an engine comprising the crankshaft rear oil seal seat.

The present disclosure additionally provides a vehicle including the engine.

Through above-mentioned technical scheme, through set up the gear room sunken from inside to outside on the oil blanket seat behind the bent axle to this gear room is used for holding a plurality of gears of installing engine cylinder body rear end, and the integrated level is high, has avoided setting up unnecessary spare part at the rear end of engine cylinder body, has reduced the space of arranging of engine cylinder body rear end.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic view of an assembly of a crankshaft rear oil seal and an engine block according to an embodiment of the present disclosure;

FIGS. 2 and 3 are schematic structural views of a rear oil seal of a crankshaft according to an embodiment of the present disclosure;

fig. 4 is a schematic sectional structure view of a rear oil seal holder of a crankshaft in which a lubricating oil hole is shown according to an embodiment of the present disclosure.

Description of the reference numerals

1 rear oil seal seat body 10 gear chamber

101 first chamber 102 second chamber

11 inner wall of rear oil seal seat body

12 outer wall 121 strengthening rib of back oil seal seat body

13 first through hole 14 second through hole

15 mounting groove 16 lubricating oil hole

161 first bore section 162 second bore section

163 third oil hole section 17 mounting hole

18 main profile frame 19 partition frame

191 partition the inner wall of the frame

200 crankshaft timing gear of 100 engine cylinder block

Rear end flange of 201 crankshaft timing gear

300 oil pump gear

301 rear end nut of oil pump gear

400 idler Gear 401 rear end flange of idler gear

500 air conditioner compressor gear

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, where the terms of orientation such as "inner" and "outer" are used without contrary explanation, they refer to the inner and outer of the specific structural outline, and "rear end" refers to the end of the engine where the flywheel is mounted, and the terms such as "first" and "second" are used merely to distinguish one element from another, and are not sequential or important.

The utility model provides an oil seal seat behind bent axle, this oil seal seat behind bent axle can include back oil seal seat body 1, and this back oil seal seat body 1 can be used for sealed setting at the rear end of engine block 100, and the inner wall 11 of back oil seal seat body 1 can be along the direction of its outer wall 12 sunken in order to form and be used for holding the gear room 10 of installing a plurality of gears at the rear end of engine block 100.

In the above technical solution, by providing the gear chamber 10 recessed from the inside to the outside on the crankshaft rear oil seal holder, and the gear chamber 10 is used for accommodating a plurality of gears mounted to the rear end of the engine cylinder block 100, the integration level is high, the arrangement of redundant parts at the rear end of the engine cylinder block is avoided, and the arrangement space at the rear end of the engine cylinder block is reduced.

Specifically, as shown in fig. 1 and 2, based on the spatial arrangement of the plurality of gears at the rear end of the engine block 100, the gear chamber 10 may include a first chamber 101 and a second chamber 102 for accommodating the different gears, the rear oil seal housing body 1 may have a main profile frame 18 and a partition frame 19 thereon, the first chamber 101 and the second chamber 102 are enclosed by the main profile frame 18 and the partition frame 19, and the partition frame 19 may be located between the first chamber 101 and the second chamber 102, as seen in fig. 2, an inner wall 181 of the main profile frame 18 and an inner wall 191 of the partition frame 19 are flush with each other so as to be in close contact with the engine block 100, and ensure sealability.

In addition, the inside of the partition frame 19 may be formed with a hollow chamber (not shown) to communicate the first chamber 101 and the second chamber 102, the hollow chamber (not shown) being designed to facilitate the gear provided in the second chamber 102 to be engaged with the gear provided in the first chamber 101.

As an embodiment of the present disclosure, the first chamber 101 may be used to accommodate the crankshaft timing gear 200, the oil pump gear 300, and the idle gear 400, and the second chamber 102 may be used to accommodate the air conditioner compressor gear 500 engaged with the idle gear 400, where the engagement between the idle gear 400 and the air conditioner compressor gear 500 may be achieved through the through cavity; alternatively, the first chamber 101 may be used to house only the crankshaft timing gear 200, and the second chamber 102 may be used to house the idler gear 400, the oil pump gear 300, and the oil pump gear 400, in which case the aforementioned hollow chambers may allow for meshing of the crankshaft timing gear 200 with the idler gear 400; still alternatively, the first chamber 101 may be used to house the crankshaft timing gear 200 and the oil pump gear 300, the second chamber 102 may be used to house the idler gear 400 and the air conditioner compressor gear 500, and the hollow cavity may enable engagement of the crankshaft timing gear 200 with the idler gear 400 and engagement of the idler gear 400 with the oil pump gear 300. The present disclosure does not limit the gears at the rear end of the engine block 100 specifically housed in the first chamber 101 and the second chamber 102, and it is sufficient if the mounting is reasonable.

As shown in fig. 2, a first through hole 13 and a second through hole 14 penetrating the inner wall 11 and the outer wall 12 may be formed in the bottom wall of the first chamber 101, the first through hole 13 may be used for the rear end flange 201 of the crankshaft timing gear 200 to penetrate, and the second through hole 14 may be used for the rear end flange 401 of the idle gear 400 to penetrate. During assembly, a first oil seal may be disposed between the first through hole 13 and the rear end flange 201 of the crankshaft timing gear 200 to ensure a sealing relationship between the crankshaft timing gear 200 and the crankshaft rear oil seal seat; also, a second oil seal may be provided between the second through hole 14 and the rear end flange 401 of the idle gear 400 to ensure a sealing relationship between the idle gear 400 and the crankshaft rear oil seal. As for the reason why the first through hole 13 and the second through hole 14 are provided, the reason is that the crankshaft timing gear 200 and the idler gear 400 generally output torque to the outside in the design process of the engine in general, and the first through hole 13 and the second through hole 14 are provided to facilitate the output of torque.

In addition, as shown in fig. 2, a mounting groove 15 for accommodating the rear end nut 301 of the oil pump gear 300 is formed on the bottom wall of the first chamber 101, and the bottom of the mounting groove 15 protrudes from the outer wall 12 for inserting the rear end nut 301. The designer should avoid the design of the through opening as much as possible in the process of designing the crankshaft rear oil seal seat in consideration of the tightness of the crankshaft rear oil seal seat, so as to prevent oil leakage accidents, and the problem of oil leakage of the crankshaft rear oil seal seat is generally difficult to deal with, so the design of the mounting groove 15 is seemingly simple, and the rationality and the inherent design logic of the structural design can be seen even though the mounting groove 15 is small in consideration of the sealing factor of the crankshaft rear oil seal seat.

As shown in fig. 2 and 4, a lubricating oil hole 16 may be further formed in the rear oil seal housing body 1, and one end of the lubricating oil hole 16 may be used to communicate with an oil passage on the engine block 100, and the other end may communicate with the gear chamber 10. Because the rear oil seal seat body 1 is not integrally formed on the engine block 100, oil passages of the rear oil seal seat body 1 and the engine block 100 may be not communicated tightly enough to cause oil leakage, and in an alternative embodiment, a sealing structure may be provided at a connection between the lubricating oil hole 16 and the engine block 100 to avoid oil leakage. In another alternative embodiment, a delivery oil pipe may be provided between the oil hole 16 and an oil passage on the engine block 100 to achieve delivery of the oil. The other end of the lubricating oil hole 16 can be communicated with the gear chamber 10 so as to spray lubricating oil to the gears in the gear chamber 10, and the gears are meshed with each other, so that the lubricating effect of the lubricating oil on each gear can be realized in the process of gear transmission, the friction between the gears is reduced, and the stability of the gear transmission is improved.

Further, as shown in fig. 2, the lubricating oil hole 16 may have one end located on the inner wall 191 of the partition frame 19 for communication with the oil passage on the engine block 100 and the other end communicating with at least one of the first chamber 101 and the second chamber 102. When assembling, one end of the lubricating oil hole 16 on the inner wall 191 of the partition frame 19 may be closely matched with the oil passage on the rear end of the engine block 100, and of course, in order to further improve the sealing performance of the communication, a sealing ring or the like may be provided at the communication. The other end of the oil hole 16 may communicate with at least one of the first chamber 101 and the second chamber 102. For example, the further end may communicate with only the first chamber 101; or may communicate with only the second chamber 102; or may be in communication with both the first chamber 101 and the second chamber 102. The present disclosure is not so limited.

Referring to fig. 4, the oil hole 16 may include a first oil hole section 161, a second oil hole section 162, and a third oil hole section 163 penetrating one another. The end of the first oil hole section 161 may be formed on the inner wall 191 of the partition frame 19, and is coaxial a with the second oil hole section 162; one end of the second oil hole section 162 may communicate with the first oil hole section 161 and the other end may communicate with the third oil hole section 163, and the bore diameter of the second oil hole section 162 may be smaller than that of the first oil hole section 161, the third oil hole section 163 may communicate with the gear chamber 10, and the axis B of the third oil hole section 163 may be perpendicular to the axis a.

One problem that arises to designers during the design of a structure is: the way in which the lubricating oil enters the gear chamber 10 is more reasonable and the lubricating effect is better. In view of this problem, one embodiment considered by the designer is to inject the lubricating oil into the gear chamber 10 by injection, and in order to perform the pressurization treatment on the lubricating oil, the aperture of the second oil hole section 162 may be much smaller than that of the first oil hole section 161, and the lubricating oil passes through the second oil hole section 162, the flow rate is increased, the pressure is increased, and the lubricating oil is injected into the gear chamber 10 by being guided by the third oil hole section 163, thereby performing the lubricating action on the gears in the gear chamber 10.

As shown in fig. 1 and 3, a plurality of ribs 121 extending in different directions may be formed on the outer wall 12 of the rear oil seal housing body 1, ends of at least some of the ribs 121 extend to the mounting holes 17 of the rear oil seal housing body 1, and a fastener is inserted into the mounting holes 17 to mount the rear oil seal housing body 1 to the rear end of the engine block 100. As can be seen, the mounting holes 17 are provided in plurality and at different positions of the main profile frame 18, and the ends of at least some of the reinforcing ribs 121 extend to the mounting holes 17 of the main profile frame 18, thereby reinforcing the problem of the reduction in structural strength caused by the provision of the mounting holes 17. The fastener can be constructed for bolt and nut structure, conveniently dismantles and installs back oil blanket body 1.

In addition, in order to avoid the addition of connecting parts and unnecessary process flows, the crankshaft rear oil seal seat can be integrally cast and molded by a rigid metal material.

The present disclosure also provides an engine, which may include the crankshaft rear oil seal seat.

The present disclosure additionally provides a vehicle that may include the engine described above.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a crankshaft rear oil seal seat which characterized in that, crankshaft rear oil seal seat includes:

the rear oil seal seat comprises a rear oil seal seat body (1), wherein the rear oil seal seat body (1) is used for being arranged at the rear end of an engine cylinder body (100) in a sealing mode;

an inner wall (11) of the rear oil seal housing body (1) is recessed in a direction toward an outer wall (12) thereof to form a gear chamber (10) for accommodating a plurality of gears mounted to a rear end of the engine block (100).

2. The crankshaft rear oil seal seat according to claim 1, characterized in that the gear chamber (10) comprises a first chamber (101) and a second chamber (102), the rear oil seal seat body (1) is provided with a main outline frame (18) and a separation frame (19), the main outline frame (18) and the separation frame (19) enclose the first chamber (101) and the second chamber (102), the separation frame (19) is positioned between the first chamber (101) and the second chamber (102), the separation frame (19) is internally formed with a hollow cavity to communicate the first chamber (101) and the second chamber (102),

the first chamber (101) is used for accommodating at least one of a crankshaft timing gear (200), an oil pump gear (300), an idle gear (400) and an air conditioner compressor gear (500) which are positioned at the rear end of the engine block (100), and the second chamber (102) is used for accommodating the rest of the crankshaft timing gear (200), the oil pump gear (300), the idle gear (400) and the air conditioner compressor gear (500).

3. The crankshaft rear oil seal holder according to claim 2, characterized in that a first through hole (13) and a second through hole (14) penetrating the inner wall (11) and the outer wall (12) are formed on the bottom wall of the gear chamber (10),

the first through hole (13) is used for a rear end flange (201) of the crankshaft timing gear (200) to penetrate through, and the second through hole (14) is used for a rear end flange (401) of the idle gear (400) to penetrate through.

4. The crankshaft rear oil seal seat according to claim 3, characterized in that a mounting groove (15) for accommodating a rear end nut (301) of the oil pump gear (300) is further formed on the bottom wall of the gear chamber (10), and the bottom of the mounting groove (15) protrudes from the outer wall (12).

5. The crankshaft rear oil seal seat according to claim 1, characterized in that a lubricating oil hole (16) is further formed on the rear oil seal seat body (1), one end of the lubricating oil hole (16) is used for communicating with an oil passage on the engine cylinder block (100), and the other end of the lubricating oil hole is communicated with the gear chamber (10).

6. The crankshaft rear oil seal according to claim 2, characterized in that a lubricating oil hole (16) is further formed on the rear oil seal body (1), one end of the lubricating oil hole (16) is located on the inner wall (191) of the partition frame (19) for communicating with an oil passage on the engine block (100), and the other end is communicated with at least one of the first chamber (101) and the second chamber (102).

7. The rear oil seal of the crankshaft as claimed in claim 6, wherein the oil hole (16) includes a first oil hole section (161), a second oil hole section (162), and a third oil hole section (163) penetrating each other,

the end of the first oil hole section (161) is formed on the inner wall (191) of the partition frame (19) and is coaxial (A) with the second oil hole section (162);

one end of the second oil hole section (162) is communicated with the first oil hole section (161), the other end of the second oil hole section is communicated with the third oil hole section (163), and the aperture of the second oil hole section (162) is smaller than that of the first oil hole section (161);

the third oil hole section (163) is communicated with the gear chamber (10), and an axis (B) of the third oil hole section (163) is perpendicular to the axis (A).

8. The crankshaft rear oil seal according to any one of claims 1 to 7, characterized in that a plurality of reinforcing ribs (121) extending in different directions are formed on the outer wall (12) of the rear oil seal body (1), the end of at least part of the reinforcing ribs (121) extends to the mounting hole (17) of the rear oil seal body (1), and a fastener is arranged through the mounting hole (17) to mount the rear oil seal body (1) to the rear end of the engine block (100).

9. An engine, characterized in that it comprises a crankshaft rear oil seal according to any one of claims 1-8.

10. A vehicle characterized by comprising the engine recited in claim 9.