CN210239780U - Sealing assembly of engine oil pan and engine - Google Patents

Abstract

The utility model provides a seal assembly for engine oil pan, including annular sealed pad body, be equipped with the mounting hole on the sealed pad body, its characterized in that: the sealing gasket body comprises a paper gasket and a rubber gasket which are connected into a whole, and the mounting hole is formed in the paper gasket. The utility model provides a seal assembly has adopted paper pad and rubber pad combination sealing mode, has both had the shock attenuation and the noise reduction effect of rubber pad, sets up the mounting hole on paper pad again, utilizes paper pad to receive non-deformable and ageing-resistant characteristics after the bolt compresses tightly, prevents because the packing force of bolt is too big, mounting hole transitional stretching and hole site link up from top to bottom and lead to the machine oil seepage. The compression rate of the sealing surface of the mounting bolt in the sealing assembly is controlled, so that the sealing reliability of the product is improved, and the product has a long-term lasting sealing effect.

Description

Sealing assembly of engine oil pan and engine

Technical Field

The utility model relates to an automobile engine machine parts technical field particularly, relates to a sealing assembly who is used for engine oil pan and reaches engine including above-mentioned sealing assembly.

Background

At present, an engine oil pan is mounted at the lower part of an engine, the sealing performance of the oil pan is ensured by arranging a sealing gasket between the oil pan and an engine cylinder body during assembly, and a softer material such as a rubber sealing gasket is generally adopted for sealing. In the assembling process, due to the pressing force of the bolts, the rubber pad can be extruded by the oil pan and the engine cylinder body in the up-down direction to deform, so that a gap between the oil pan and the engine cylinder body is filled, and the sealing effect is achieved.

However, realizing the utility model discloses the in-process, utility model human finds that prior art has following problem at least in practical application:

in the case that the oil pan gasket is a rubber gasket, for example, the material of nitrile rubber (NB702A) is easily deformed after receiving the pressing force of the fastening stud, as shown in fig. 1, the longitudinal (a-a) deformation is larger than the transverse (B-B) deformation, so that the fastening stud and the rubber hole are in clearance fit, the rubber hole is penetrated, and the engine oil leaks along the stud. On the other hand, the bolt such as the stud is used for sealing by applying pressure to three layers of structures including the rubber sealing gasket, the oil pan and the oil pan backing plate, the sealing effect is best when the theoretical compression ratio controlled by the sealing structure is 44%, but due to the tolerance distribution of each layer of structure and the stud, the whole compression ratio is possible to be in the range of 10-60%, when the stud is excessively compressed, the rubber hole is communicated when the compression ratio is larger than 44%, and the oil leakage phenomenon occurs.

Meanwhile, the rubber sealing gasket has insufficient stress bearing capacity and is easy to age under high temperature and high pressure, and due to the limited pressure resistance and compression resilience of the rubber material, the rubber sealing gasket loses the elastic deformation capacity after receiving the transitional pressing force of the fastening stud, so that the sealing performance of the engine oil pan is poor or lost, and the oil leakage or oil leakage phenomenon of the engine oil pan is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, an object of the present invention is to provide a seal assembly for an engine oil pan.

Another object of the present invention is to provide an engine including the above sealing assembly.

In order to achieve the above object, the utility model discloses technical scheme of the first aspect provides a seal assembly for engine oil pan, including annular sealed pad body, be equipped with mounting hole, its characterized in that on the sealed pad body: the sealing gasket body comprises a paper gasket and a rubber gasket which are connected into a whole, and the mounting hole is formed in the paper gasket.

The utility model discloses a sealing assembly for engine oil pan that technical scheme of first aspect provided, including paper pad and rubber pad, be provided with the mounting hole on the paper pad, the bolt passes through the mounting hole will sealing pad body fixed mounting be in on the engine oil pan. Because the packing force of bolt, the rubber pad can receive the extrusion of oil pan and engine cylinder body in upper and lower direction and produce the deformation to fill up the gap between oil pan and the engine cylinder body, thereby reach sealed effect. Utility model people discover, to the condition that the mounting hole set up on the rubber pad, when actual compression ratio is greater than a certain value, the rubber pad is compressed by the transition, and its vertical deformation is followed promptly on sealed face upward deformation in the inside and outside direction of engine oil pan is greater than its lateral deformation, the perpendicular to promptly on sealed face upward deformation in the inside and outside direction of engine oil pan. Similarly, the longitudinal deformation of the mounting hole in the rubber gasket is larger than the transverse deformation, so that the part of the mounting hole in the longitudinal direction moves in the direction far away from the bolt, the part is gradually separated from the stud of the bolt to form clearance fit, the mounting hole is communicated up and down, engine oil leaks along the stud, and the oil leakage or oil leakage phenomenon occurs in the oil pan of the engine. Compare in prior art, lead to the uncontrollable mode of actual compression ratio on the rubber pad with the mounting hole setting, the utility model provides a sealing assembly provides a sealing mode by paper pad and rubber pad combination, will the mounting hole sets up on the paper pad to the compression ratio of the sealed face of construction bolt avoids among the control sealing assembly the mounting hole is had a perfect understanding from top to bottom by the compression deformation that passes through, and machine oil is in the same direction as the emergence of double-screw bolt seepage condition. Meanwhile, the problem that the paper pad loses elastic deformation capacity due to the fact that the paper pad is compressed by the bolts in a transitional mode, and the sealing performance of the paper pad is poor or lost is avoided.

It is worth explaining that, the paper pad has high temperature and high pressure resistant characteristics as the sealing pad of the engine oil pan, and compared with the rubber pad, the paper pad is not easy to age in high temperature and high pressure environment, has longer service life, still keeps the elastic deformation capability in the condition of high temperature work of the engine, can effectively fill up the gap between the oil pan and the engine cylinder body, and avoids the occurrence of leakage. In addition, the pressure resistance and the compression resilience of the paper pad are limited, the pressure resistance of the paper pad is stronger, and the compression rate is small when the paper pad is subjected to the pressure of the same degree, so that the longitudinal deformation of the mounting hole can be effectively reduced, the vertical penetration is prevented, the sealing reliability of the product is improved, and the product has a long-term lasting sealing effect.

Additionally, the utility model provides an engine oil pan's among the above-mentioned technical scheme seal assembly can also have following additional technical characterstic:

in the above technical solution, the sealing assembly further includes: the bolt is matched with the mounting hole and penetrates through the mounting hole; wherein, the bolt is a hexagon flange bolt.

The hexagonal flange bolt comprises a hexagonal head, a flange plate and a screw rod, wherein the bottom surface of the flange plate is provided with anti-slip teeth, after the hexagonal flange bolt is screwed up and fixed, the anti-slip teeth compress the paper pad, and the contact area and the friction resistance between the paper pad and the paper pad are enhanced through a tooth-shaped structure so as to play a role in anti-slip locking, so that the paper pad is not easy to loosen or displace when vibrated. In addition, relative other bolts, the size of the hexagon head of the hexagon flange bolt can be smaller than other bolts, so that the hexagon head can be conveniently installed in a narrow place in space, and the hexagon head is installed by using a small inner hexagon sleeve, so that the operation is simple, and the installation is convenient.

In the technical scheme, the paper pads comprise strip-shaped structures and are arranged on the horizontal sealing surface of the engine oil pan, the number of the paper pads is two, and the two paper pads are arranged oppositely; the two rubber pads are arranged oppositely, and the two rubber pads are arranged on the arc-shaped sealing surface of the engine oil pan in a protruding manner towards one side away from the plane where the paper pad is arranged; the paper pad is a paper pad, the rubber pads are rubber pads, and two ends of the two paper pads are respectively connected with two ends of the two rubber pads end to form a closed annular structure.

The sealing assembly for the engine oil pan comprises two paper gaskets and two rubber gaskets, wherein the two paper gaskets are arranged oppositely; the two rubber pads are also oppositely arranged. One end of one paper pad is connected with one rubber pad, and the other end of the paper pad is connected with the other rubber pad; one end of one rubber pad is connected with one paper pad, and the other end of the rubber pad is connected with the other paper pad. Such a paper pad, a rubber pad, another paper pad, another rubber pad end to end form a closed ring structure to cover the sealing face of the engine oil pan. The paper pad is adopted to seal the part of the engine oil pan, which is the plane, and the rubber pad component in the prior art is changed into the paper pad component, so that the deformation of the paper pad after being extruded by the oil pan and the engine cylinder body is smaller than that of the rubber pad, thereby avoiding the oil leakage risk caused by the transitional compression of the bolt and improving the use reliability of the product. The sealing surface of the engine oil pan is a non-planar part, such as an arc-shaped sealing surface, and the rubber gasket is used for sealing. Like this, through setting up paper spare and the sealed mode of rubber pad combination, both solved oil pan damping and reliability problem, solved the oil pan plane sealing part rubber pad compression deformation poor and the risk of the oil leak that arouses again. Therefore, the sealing performance is ensured, the use reliability of the product is improved, and the product has a long-term and lasting sealing effect.

In the above technical solution, at least the end of the strip structure is provided with the mounting hole.

The mounting holes are formed in the end portions of the paper pads, and good fixing effect can be achieved on the paper pads. Therefore, the four mounting holes are formed in the two ends of the two paper gaskets, the paper gaskets are fixedly mounted on the sealing surface of the oil pan through bolts and are compressed and sealed at the four corners of the oil pan, and the sealing performance of the sealing assembly can be further improved. It will be appreciated that the provision of mounting holes in the bent or other portions of the paper mat also reduces the risk of oil leakage there, further improving the sealing and operational reliability of the seal assembly. Obviously, a plurality of mounting holes are arranged on the strip-shaped structure.

In the technical scheme, the paper pad comprises a first connecting part, and the first connecting part is bent and transited from the end part of the strip-shaped structure to the direction of the rubber pad and is used for being connected with the rubber pad; and/or the rubber pad comprises a second connecting part, and the second connecting part is bent and extended from the end part of the circular arc structure to the paper pad direction and is used for being connected with the paper pad.

The utility model provides a seal assembly includes paper pad and rubber pad, wherein the paper pad with the rubber pad can be fixed connection, also can support by the split structure together. The paper pad and the rubber pad can be connected more tightly by arranging the connecting part between the paper pad and the rubber pad, so that the overall sealing performance of the sealing assembly is further improved. Specifically, two ends of the paper pad arranged on the plane sealing surface are respectively provided with a first connecting part, and the first connecting parts extend from one end of the strip-shaped structure to the direction of the rubber pad and are used for being connected with the rubber pad. It can also be understood that the two ends of the rubber pad on the non-planar sealing surface are respectively provided with a second connecting portion, the second connecting portions are bent from the end portions of the rubber pad to the paper pad, so that the second connecting portions are located on the planar sealing surface to be attached to the paper pad on the planar sealing surface, and by the second connecting portions, the possibility of oil leakage at the bent portion or the inflection point of the oil pan is reduced, and the sealing effect is further improved. And correspondingly, under the condition that the first connecting part and the second connecting part are arranged at the same time, at least part of the first connecting part is matched with at least part of the second connecting part, so that the second connecting part is attached to the first connecting part, and the overall sealing performance of the product is further improved. It can be understood that, to the rubber pad includes the condition of second connecting portion, the setting is in the mounting hole of paper pad tip with the second connecting portion are adjacent and mutually noninterfere, when fixing through the bolt, can also compress tightly the second connecting portion to further improve the paper pad with leakproofness between the rubber pad plays certain limiting displacement to the second connecting portion simultaneously, with further improvement the holistic reliability in utilization of seal assembly.

In the technical scheme, the joint of the paper pad and the rubber pad is fixed by sealing glue.

In the prior art, the oil pan is also subjected to a sealing process of integral gluing, but the requirement on manufacturing a sealing surface is high, the gluing is required to be uniform, and otherwise, when the glue layer is extruded, the blockage of a bolt hole or an oil return hole is easily caused. On the other hand, after the oil pan is disassembled and assembled, the sealant must be completely removed, which wastes time and labor. The utility model provides a sealing assembly only the paper pad with the junction of rubber pad is fixed through sealed gluey bonding, makes the paper pad with the connection of rubber pad is more fastened, has filled the paper pad with gap between the rubber pad to improved the product leakproofness, the bolt hole of jam oil pan or the condition of oil gallery can not take place yet simultaneously. Optionally, the sealant is silica gel. Silica gel is comparatively common as sealed glue, owing to have high temperature resistance, can be under the condition of engine intensification, still keep the paper pad with the rubber pad bonds together, avoids machine oil to follow the paper pad with the seam crossing seepage of rubber pad, in order to guarantee sealed combination's use reliability.

In any one of the above technical solutions, the arc-shaped structure is provided with a plurality of reinforcing ribs, the reinforcing ribs extend along the circumferential direction of the arc-shaped structure, and the plurality of reinforcing ribs are arranged at intervals along the axis direction of the arc-shaped structure.

The rubber gasket is arranged on the non-planar sealing surface of the oil pan, the overall thickness of the rubber gasket can be increased by arranging the reinforcing ribs, so that the structural strength and the elastic performance of the rubber gasket are improved, the phenomenon that the rubber gasket loses the original elastic deformation capability when being extruded by the oil pan and an engine cylinder body, the sealing performance of an engine is poor or loses the sealing performance is avoided, the service life of the rubber gasket is prolonged, and the use reliability of the rubber gasket is improved; on the other hand, by arranging a plurality of reinforcing ribs extending along the circumferential direction of the circular arc-shaped structure, multi-layer isolation is formed between the inside and the outside of the oil pan, so that the sealing performance of the rubber gasket on the sealing surface of the oil pan is enhanced. Meanwhile, when the bolt is pressed tightly, the paper pads are transversely compressed and deformed, the rubber pads are extruded from the paper pads at the two sides to the center position, and the rubber pads are provided with a plurality of reinforcing ribs, so that the reinforcing ribs can be ensured to be filled in the position of a gap generated between the rubber pads and the non-planar sealing surface due to the arching of the rubber pads, and the sealing performance between the rubber pads and the non-planar sealing surface is ensured. In this way, the sealing performance and the use reliability of the sealing assembly are further improved by arranging the reinforcing ribs.

In any of the above technical solutions, the paper mat is a swelling vulcanized plate mat.

Compared with other non-swelling paper gaskets, the swelling vulcanized plate can naturally expand when meeting oil so as to enhance the tightness of the connection between the paper gasket and the oil pan as well as the engine cylinder body, and is filled in the gap between the oil pan and the engine cylinder body, so that the sealing performance is better; compared with other non-vulcanized paper mats, the swelling vulcanized plate can not be aged at higher temperature and still has elastic deformation capacity so as to still maintain good sealing performance at high temperature of an engine. Thus, the swelling vulcanized plate can be naturally expanded by oil at higher temperature as a paper pad, and has tighter sealing effect continuously.

The utility model discloses technical scheme of second aspect provides the engine, and an engine includes: an oil pan, a sealing surface of which is provided with a sealing assembly as described in any one of the embodiments of the first aspect of the present invention; the oil pan is characterized in that a plurality of mounting holes are formed in a paper pad of the sealing assembly, the paper pad is arranged on a plane sealing surface of the oil pan, a plurality of bolt holes which correspond to the mounting holes in a one-to-one mode are formed in the plane sealing surface and used for fixing the sealing assembly on the oil pan through bolts, and a rubber pad of the sealing assembly is arranged on an arc-shaped sealing surface of the oil pan.

The utility model discloses the engine that technical scheme of second aspect provided, because of including any one in the first aspect technical scheme seal assembly, therefore have all beneficial effects that any above-mentioned technical scheme had, no longer describe herein.

The oil pan is characterized in that a plurality of mounting holes which penetrate through the paper pad in the thickness direction are formed in the paper pad of the sealing assembly, and a plurality of bolt holes which correspond to the mounting holes one to one are formed in the sealing surface of the oil pan and used for fixing the sealing assembly on the oil pan through bolts. The paper pad of the sealing assembly is provided with a mounting hole, the sealing surface of the oil pan is provided with a plurality of bolt holes in one-to-one correspondence with the mounting hole, the mounting hole is penetrated through by a fastener and screwed into the bolt holes, so that the sealing assembly is assembled on the sealing surface of the oil pan, the fixed connection between the sealing assembly and the oil pan is realized, the sealing assembly continuously provides a stable sealing effect for the engine, the engine is prevented from oil leakage or oil seepage, the performance of the engine is prevented from being influenced, the normal operation of the engine is ensured, and the use reliability of the engine is further improved.

In the technical scheme, the plane sealing surface of the oil pan is coated with the sealant, and the sealant is arranged on the central line of the connecting line between every two adjacent bolt holes.

Through setting up sealed glue will the sealed face bonding of paper pad and oil pan is in the same place, can make the paper pad pastes tightly the sealed face of oil pan, a plurality of establishing simultaneously adjacent two sealed glue between the bolt hole with the bolt cooperatees and establishes on the frame of oil pan one side forms the seal structure of similar sealed muscle class to reduce the communicating possibility in the engine, in order to strengthen the sealing performance of engine further reduces the emergence of oil leak or oil impregnate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view showing the compression deformation of a rubber packing according to the background art of the present invention;

fig. 2 is a schematic perspective view of a seal assembly according to some embodiments of the present invention;

wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:

1, sealing the assembly; 11 a paper pad; 111 an elongated structure; 113 a first connection portion; 115 mounting holes; 13 rubber pad; 131 circular arc structure; 133 a second connection portion; 135 reinforcing ribs.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The following describes a seal assembly 1 of an engine oil pan according to some embodiments of the present invention and an engine including the above seal assembly 1 with reference to fig. 1 and 2.

As shown in fig. 2, an embodiment of the first aspect of the present invention provides a sealing assembly 1 for an engine oil pan, including a paper pad 11, a rubber pad 13, and a mounting hole 115 provided on the paper pad 11.

Example one

The utility model discloses a sealing assembly 1 for engine oil pan that embodiment of first aspect provided, including paper pad 11 and rubber pad 13, be provided with mounting hole 115 on paper pad 11, the bolt passes through mounting hole 115 with sealing pad body fixed mounting on engine oil pan. Due to the pressing force of the bolts, the rubber pad 13 is squeezed by the oil pan and the engine cylinder body in the up-down direction to deform so as to fill the gap between the oil pan and the engine cylinder body, thereby achieving the sealing effect. Utility model people discover, to the condition that the mounting hole set up on the rubber pad, as shown in fig. 1, when actual compression ratio is greater than a certain value, the rubber pad is compressed by the transition, and its longitudinal deformation is greater than its transverse deformation along the deformation of the inside and outside side of engine oil pan on sealed face promptly, the deformation of the inside and outside side of perpendicular to engine oil pan on sealed face promptly. Similarly, the longitudinal deformation of the mounting hole 115 in the rubber gasket is larger than the transverse deformation, so that the part of the mounting hole 115 in the longitudinal direction moves away from the bolt, the part is gradually separated from the stud of the bolt to form clearance fit, the mounting hole 115 is communicated up and down, engine oil leaks along the stud, and the oil leakage or oil leakage phenomenon occurs in the oil pan of the engine. Compare in prior art, set up mounting hole 115 and lead to the uncontrollable mode of actual compression ratio on rubber pad 13, the utility model provides a sealing assembly 1 provides a by the sealed mode of paper pad 11 and the combination of rubber pad 13, sets up mounting hole 115 on paper pad 11 to the compression ratio of the sealed face of mounting bolt in the control sealing assembly 1 avoids mounting hole 115 to be had a perfect understanding from top to bottom by the compression deformation of transition, and machine oil is in the same direction as the emergence of the double-screw bolt seepage condition. Meanwhile, the problem that the paper pad loses elastic deformation capacity due to the fact that the paper pad is compressed by the bolts in a transitional mode, and the sealing performance of the paper pad is poor or lost is avoided.

It is worth to be noted that, the paper pad 11 is used as a sealing pad of the engine oil pan, has the characteristic of high temperature and high pressure resistance, and compared with the rubber pad 13, the paper pad 11 is not easy to age in the high temperature and high pressure environment, and has a longer service life, and in the case of high temperature operation of the engine, the paper pad still maintains the elastic deformation capability, and can effectively fill up the gap between the oil pan and the engine cylinder body, and avoid the occurrence of leakage. In addition, compared with the rubber material, the paper pad 11 has limited pressure resistance and compression resilience, and has stronger pressure resistance and small compression ratio when being pressed by the same degree, so that the longitudinal deformation of the mounting hole 115 can be effectively reduced, the vertical penetration can be prevented, the sealing reliability of the product can be improved, and the product has long-term and durable sealing effect.

Further, the seal assembly 1 further comprises: the bolt is matched with the mounting hole 115 and penetrates through the mounting hole 115; wherein, the bolt is a hexagon flange bolt.

The hexagonal flange bolt includes hexagon head, ring flange and screw rod, and wherein the bottom surface of ring flange is provided with anti-skidding tooth, screws up at the hexagonal flange bolt and fixes the back, and anti-skidding tooth compresses tightly paper pad 11 to through area of contact and the frictional resistance of dentate structure reinforcing and paper pad 11, in order to play anti-skidding locking effect, thereby make paper pad 11 difficult pine take off or take place the displacement when receiving the vibration. In addition, the size of the hexagon head of the hexagon flange bolt can be smaller than that of other bolts relative to other bolts, so that the hexagon head can be conveniently installed in a narrow place in space, and the hexagon head is installed by using a small inner hexagon sleeve, so that the operation is simple, and the installation is convenient.

Further, as shown in fig. 2, the paper pad 11 includes a strip-shaped structure 111 for being disposed on the horizontal sealing surface of the engine oil pan, and the number of the paper pads 11 is two, and the two paper pads 11 are disposed oppositely; the rubber pads 13 comprise circular arc structures 131 protruding towards one side away from the plane where the paper pads 11 are located, and are used for being arranged on the arc sealing surface of the engine oil pan, the number of the rubber pads 13 is two, and the two rubber pads 13 are oppositely arranged; wherein, paper pad 11 is paper pad 11, and rubber pad 13 is rubber pad 13, and the both ends of two paper pads 11 are end to end with the both ends of two rubber pads 13 respectively, form inclosed annular structure.

Specifically, the sealing assembly 1 for the engine oil pan comprises two paper pads 11 and two rubber pads 13, wherein the two paper pads 11 are oppositely arranged; the two rubber pads 13 are also oppositely arranged. One end of one paper pad 11 is connected with one rubber pad 13, and the other end of the paper pad 11 is connected with the other rubber pad 13; similarly, one end of one rubber pad 13 is connected to one paper pad 11, and the other end of the rubber pad 13 is connected to the other paper pad 11. Such a paper pad 11, a rubber pad 13, another paper pad 11, another rubber pad 13 are connected end to form a closed ring structure to cover the sealing surface of the engine oil pan. The paper pad 11 is adopted to seal the part of the engine oil pan with the plane sealing surface, the rubber pad 13 component in the prior art is changed into the paper pad 11 component, and the deformation of the paper pad 11 after being extruded by the oil pan and the engine cylinder body is smaller than that of the rubber pad 13, so that the oil leakage risk caused by the transitional compression of bolts can be avoided, and the use reliability of the product is improved. The sealing surface of the engine oil pan is a non-planar part, such as an arc-shaped sealing surface, and the rubber gasket 13 is used for sealing, so that the rubber gasket 13 has good vibration reduction effect and noise reduction effect, and can be suitable for the non-planar sealing surface. Like this, through setting up paper and the mode that rubber pad 13 combination is sealed, both solved oil pan damping and reliability problem, solved the oil pan plane sealing part rubber pad 13 again and compressed deformation poor and the risk of the oil leak that arouses. Therefore, the sealing performance is ensured, the use reliability of the product is improved, and the product has a long-term and lasting sealing effect.

Further, as shown in fig. 2, at least the end of the elongated structure 111 is provided with a mounting hole 115.

The installation hole 115 is provided at the end of the paper pad 11, which can provide a good fixing effect to the paper pad 11. Thus, the two ends of the two paper pads 11 are provided with four mounting holes 115, the paper pads 11 are fixedly mounted on the sealing surface of the oil pan through bolts, and the four corners of the oil pan are pressed and sealed, so that the sealing performance of the sealing assembly 1 can be further improved. It will be appreciated that the provision of the mounting holes 115 at the bent or other portions of the paper mat 11 also reduces the risk of oil leakage there, further improving the sealing and operational reliability of the seal assembly 1. It is apparent that the elongated structure 111 is provided with a plurality of mounting holes 115.

Further, as shown in fig. 2, the paper pad 11 includes a first connecting portion 113, and the first connecting portion 113 is bent from the end of the elongated structure 111 toward the rubber pad 13 for connecting with the rubber pad 13.

The utility model provides a seal assembly 1 includes paper pad 11 and rubber pad 13, and wherein paper pad 11 and rubber pad 13 can be fixed connection, also can lean on the split structure that leans on together. The connection between the paper pad 11 and the rubber pad 13 can be more tightly achieved by arranging the connection part between the paper pad 11 and the rubber pad 13, so that the overall sealing performance of the sealing assembly 1 is further improved. Specifically, the two ends of the paper pad 11 disposed on the plane sealing surface are respectively provided with a first connecting portion 113, and the first connecting portion 113 extends from one end of the elongated structure 111 to the direction of the rubber pad 13 for connecting with the rubber pad 13. The gap at the joint of the paper pad 11 and the rubber pad 13 can be reduced by providing the first connecting portion 113 to improve the sealing performance of the sealing assembly 1.

Further, as shown in fig. 2, the rubber pad 13 includes a second connecting portion 133, and the second connecting portion 133 is bent and extended from the end of the circular arc structure 131 toward the paper pad 11 for connecting with the paper pad 11.

It can also be understood that the two ends of the rubber gasket 13 disposed on the non-planar sealing surface are respectively provided with the second connecting portion 133, the second connecting portion 133 is bent from the end of the rubber gasket 13 toward the paper gasket 11, so that the second connecting portion 133 is located on the planar sealing surface to be attached to a part of the paper gasket 11 on the planar sealing surface, and by providing the second connecting portion 133, the possibility of oil leakage at the bent portion or inflection point of the oil pan is reduced, and the sealing effect is further improved. Corresponding to the situation that the first connecting part 113 and the second connecting part 133 are arranged at the same time, at least part of the first connecting part 113 is matched with at least part of the second connecting part 133, so that the second connecting part 133 is attached to the first connecting part 113, and the overall sealing performance of the product is further improved. It can be understood that, in the case that the rubber gasket 13 includes the second connecting portion 133, the mounting hole 115 provided at the end of the paper gasket 11 is adjacent to the second connecting portion 133 and does not interfere with each other, and when the fixing is performed by the bolt, the second connecting portion 133 can be pressed, so as to further improve the sealing performance between the paper gasket 11 and the rubber gasket 13, and meanwhile, the second connecting portion 133 is limited to a certain extent, so as to further improve the overall use reliability of the sealing assembly 1.

Further, as shown in fig. 2, the joint of the paper pad 11 and the rubber pad 13 is fixed by adhesive by a sealant.

In the prior art, the oil pan is also subjected to a sealing process of integral gluing, but the requirement on manufacturing a sealing surface is high, the gluing is required to be uniform, and otherwise, when the glue layer is extruded, the blockage of a bolt hole or an oil return hole is easily caused. On the other hand, after the oil pan is disassembled and assembled, the sealant must be completely removed, which wastes time and labor. The utility model provides a seal assembly 1 only bonds fixedly through sealed glue in the junction of paper pad 11 and rubber pad 13 for the connection of paper pad 11 and rubber pad 13 is more fastened, has filled the gap between paper pad 11 and the rubber pad 13, thereby has improved the product leakproofness, also can not take place to block up the bolt hole of oil pan or the condition of oil gallery simultaneously. Optionally, the sealant is silica gel. Silica gel is more common as a sealant, and because of high temperature resistance, the paper pad 11 and the rubber pad 13 can be bonded together under the condition of engine temperature rise, so that the leakage of engine oil from the seam between the paper pad 11 and the rubber pad 13 is avoided, and the use reliability of the sealing combination is ensured.

Example two

In addition to the first embodiment, as shown in fig. 2, a plurality of ribs 135 are provided on the circular arc-shaped structure 131, the ribs 135 extend in the circumferential direction of the circular arc-shaped structure 131, and the plurality of ribs 135 are provided at intervals in the axial direction of the circular arc-shaped structure 131.

The rubber gasket 13 is arranged on the non-planar sealing surface of the oil pan, the overall thickness of the rubber gasket 13 can be increased by arranging the reinforcing ribs 135, so that the structural strength and the elastic performance of the rubber gasket 13 are improved, and the phenomenon that the rubber gasket 13 loses the original elastic deformation capacity when being extruded by the oil pan and an engine cylinder body to cause the sealing performance of an engine to be poor or lose the sealing performance is avoided, so that the service life of the rubber gasket 13 is prolonged, and the use reliability of the rubber gasket 13 is improved; on the other hand, by providing a plurality of reinforcing ribs 135 extending in the circumferential direction of the circular arc structure 131, a multi-layer separation is formed between the inside and the outside of the oil pan to enhance the sealing performance of the rubber gasket 13 on the oil pan sealing surface. Meanwhile, when the bolt is compressed, the paper pads 11 are transversely compressed and deformed, the rubber pads 13 are pressed by the paper pads 11 from two sides and point to the central position, and the structure with the plurality of reinforcing ribs 135 can ensure that the reinforcing ribs 135 can be filled in the position of a gap generated between the rubber pads 13 and the non-planar sealing surface due to the arching of the rubber pads 13, so that the sealing performance between the rubber pads 13 and the non-planar sealing surface is ensured. In this way, the sealing performance and the reliability of use of the seal assembly 1 are further improved by providing the reinforcing ribs 135.

Further, the paper mat 11 is a swelling vulcanized sheet mat.

Compared with other non-swelling paper gaskets 11, the swelling vulcanized plate can naturally expand when meeting oil, so that the tightness of the connection between the paper gasket 11 and the oil pan and the engine cylinder body is enhanced, and the swelling vulcanized plate is filled in the gap between the oil pan and the engine cylinder body, so that the sealing performance is better; compared with other non-vulcanized paper mats 11, the bentonite vulcanized board can not be aged at higher temperature and still has elastic deformation capability so as to still maintain good sealing performance at high temperature of the engine. Thus, the swollen vulcanized sheet as the paper mat 11 can be naturally swollen by oil at a higher temperature, and has a tighter sealing effect continuously.

An embodiment of the second aspect of the present invention provides an engine, comprising: an oil pan, wherein a sealing surface of the oil pan is provided with the sealing assembly 1 in any one embodiment of the first aspect of the invention; wherein, be provided with a plurality of mounting holes 115 on the paper pad 11 of seal assembly 1, paper pad 11 sets up on the plane sealing face of oil pan, is provided with a plurality of bolt holes with mounting hole 115 one-to-one on the plane sealing face for fix seal assembly 1 on the oil pan through the bolt, seal assembly 1's rubber pad 13 is established on the arc sealing face of oil pan.

The embodiment of the second aspect of the present invention provides an engine, which comprises the sealing assembly 1 of any one of the embodiments of the first aspect, and therefore has all the advantages of any one of the embodiments, and is not repeated herein.

The paper pad 11 of the sealing assembly 1 is provided with a plurality of mounting holes 115 which penetrate through the paper pad 11 in the thickness direction, and the sealing surface of the oil pan is provided with a plurality of bolt holes which are in one-to-one correspondence with the mounting holes 115 and used for fixing the sealing assembly 1 on the oil pan through bolts. Be provided with mounting hole 115 on seal assembly 1's paper pad 11, be provided with a plurality of bolt holes with mounting hole 115 one-to-one simultaneously on the sealing face of oil pan, run through mounting hole 115 and screw in bolt hole through the fastener, thereby assemble seal assembly 1 on the sealing face of oil pan, realize the fixed connection of seal assembly 1 and oil pan, and then make seal assembly 1 last to provide stable sealed effect for the engine, prevent that the engine from taking place oil leak or oil seepage phenomenon, influence the performance of engine, guarantee the normal operating of engine, thereby the messenger further has improved the use reliability of engine.

Furthermore, sealant is coated on the plane sealing surface of the oil pan and is arranged on the central line of the connecting line between every two adjacent bolt holes.

Through setting up sealed the sealed face bonding of gluing with paper pad 11 and oil pan together, can make paper pad 11 paste the sealed face of tight oil pan, a plurality of sealed glue of establishing between two adjacent bolt holes simultaneously cooperatees with the bolt and establishes on the frame of oil pan one side, forms the seal structure of similar sealed muscle class to reduce the communicating possibility inside and outside the engine, with the sealing performance of reinforcing engine, further reduce the emergence of oil leak or oil impregnate. The specific structure of the seal assembly provided herein is described in detail below in conjunction with a specific embodiment.

At present, a sealing gasket occupies an important position on an engine, and the phenomena of oil-water leakage, dripping and the like can be caused by the failure of the sealing gasket, so that the performance of the engine is seriously influenced. If the engine lacks oil and water due to poor sealing, the abrasion of parts and even serious accidents can be caused. The main function of the oil pan is to store and supply oil to the engine lubrication system, ensuring lubrication and cooling of engine components. How to seal the oil pan is also an important issue in the engine industry. At present, an oil pan with a non-planar sealing surface is generally sealed by an integral rubber gasket with circular arcs at two ends, the vibration reduction and noise reduction effects of the rubber gasket are good, but the requirement on the compression ratio control is high, the elliptical deformation at a bolt mounting hole is difficult to control, and particularly when the internal and external sealing widths of a machine body are limited, the internal and external communication is easily caused, so that the sealing is ineffective; if the whole gluing process of the sealing surface is adopted, the mounting mode has higher requirements on the manufacturing of the sealing surface, and the vibration and noise reduction effect and the reliability of the oil pan are poor.

Therefore, an object of the present invention is to provide a combined oil pan sealing method to overcome the above sealing and reliability defects. Adopt the sealed pad of swelling vulcanization to replace present rubber packing at oil pan both sides frame, reduce the compression ratio, reduce vertical compression deformation, to the position of non-planar sealing face, for example the lip of oil pan still uses current rubber packing structure to choose for use M8X 12's hexagon flange face bolt to replace stud, compress tightly sealed four angles to the oil pan. Therefore, the oil pan with non-planar sealing is sealed in a paper pad and rubber pad combined sealing mode, the rubber pads are arranged at the circular arcs at the two ends of the oil pan, the paper pads are arranged at other planar parts, and the joints of the rubber pads and the paper pads are sealed in a gluing mode. The paper pad is used for sealing between the oil pan and the plane of the engine body; the rubber pad is used for sealing the circular arc sealing surfaces at the two ends of the oil pan. The combined sealing mode solves the problems of vibration reduction and reliability of the oil pan, and solves the risk of oil leakage caused by poor controllability of compression deformation of a rubber pad at the plane sealing part of the oil pan. In addition, the paper pad of the plane sealing part has good ageing resistance, and the compression transverse deformation is smaller than that of the rubber pad.

To sum up, the utility model provides a sealing assembly has adopted paper pad and rubber pad combination sealing mode to set up the mounting hole on the paper pad, through the compression ratio of the sealed face of mounting bolt in the control sealing assembly, avoid the mounting hole is link up from top to bottom by the transition compressive deformation leads to, and machine oil is in the same direction as the emergence of double-screw bolt seepage condition. Because the paper pad has high temperature and high pressure resistant characteristic as the sealed pad of engine oil pan, compare in the rubber pad, the paper pad is difficult for ageing in the high temperature and high pressure environment, and life is longer, in the condition of engine high temperature work, still keeps elastic deformation's ability, can effectively fill up the gap between oil pan and the engine cylinder body, avoids the emergence of seepage. In addition, the pressure resistance and the compression resilience of the paper pad are limited, the pressure resistance of the paper pad is stronger, and the compression rate is small when the paper pad is subjected to the pressure of the same degree, so that the longitudinal deformation of the mounting hole can be effectively reduced, the vertical penetration is prevented, the sealing reliability of the product is improved, and the product has a long-term lasting sealing effect.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a seal assembly for engine oil pan, includes annular sealed pad body, be equipped with the mounting hole on the sealed pad body, its characterized in that: the sealing gasket body comprises a paper gasket and a rubber gasket which are connected into a whole, and the mounting hole is formed in the paper gasket.

2. The seal assembly of claim 1, further comprising:

the bolt is matched with the mounting hole and penetrates through the mounting hole;

wherein, the bolt is a hexagon flange bolt.

3. The seal assembly of claim 1,

the paper pads comprise strip-shaped structures and are arranged on the horizontal sealing surface of the engine oil bottom shell, the number of the paper pads is two, and the two paper pads are arranged oppositely;

the two rubber pads are arranged oppositely;

the two ends of the two paper pads are connected with the two ends of the two rubber pads end to end respectively to form the sealing pad body.

4. The seal assembly of claim 3,

the mounting hole is arranged on at least the end part of the strip-shaped structure.

5. The seal assembly of claim 3,

the paper pad comprises a first connecting part, and the first connecting part is bent and transited from the end part of the strip-shaped structure to the direction of the rubber pad and is used for being connected with the rubber pad; and/or

The rubber pad comprises a second connecting part, and the second connecting part is bent and extended towards the paper pad from the end part of the circular arc-shaped structure and is used for being connected with the paper pad.

6. The seal assembly of claim 5,

the paper pad and the rubber pad are fixedly connected through sealant in a bonding mode.

7. The seal assembly of any one of claims 3 to 6,

the arc-shaped structure is provided with a plurality of reinforcing ribs, the reinforcing ribs extend along the circumferential direction of the arc-shaped structure, and the plurality of reinforcing ribs are arranged at intervals along the axis direction of the arc-shaped structure.

8. The seal assembly of any one of claims 1 to 6,

the paper pad is a swelling vulcanized plate sealing pad.

9. An engine, comprising: an oil pan having a sealing face provided with a seal assembly according to any one of claims 1 to 8;

the oil pan is characterized in that a plurality of mounting holes are formed in a paper pad of the sealing assembly, the paper pad is arranged on a plane sealing surface of the oil pan, a plurality of bolt holes which correspond to the mounting holes in a one-to-one mode are formed in the plane sealing surface and used for fixing the sealing assembly on the oil pan through bolts, and a rubber pad of the sealing assembly is arranged on an arc-shaped sealing surface of the oil pan.

10. The engine of claim 9,

and sealant is coated on the plane sealing surface of the oil pan and is arranged on the central line of the connecting line between every two adjacent bolt holes.

Images