Multilayer sound insulation and shock absorption engine bearing cover

Abstract

The utility model relates to the technical field of engine accessories, in particular to a multi-layer sound insulation and shock absorption engine bearing cover which comprises a cover body, an assembling groove is formed in the middle of the top of the cover body, an inner sound insulation assembly is arranged in the assembling groove, and the inner sound insulation assembly comprises an outer ring which is arranged in the assembling groove and rotationally connected with the assembling groove. An inner ring is arranged on the inner side of the outer ring, an outer sound insulation pad and an inner sound absorption pad are arranged between the outer ring and the inner ring, the outer sound insulation pad is arranged on the outer side of the inner sound absorption pad in a sleeving mode, an annular groove is formed in the edge of the top face of the cover body, a plurality of fixing protruding blocks are fixedly installed on the annular side face of the outer side of the cover body, and a sealing ring is clamped in the annular groove in a matched mode. A damping ring is fixedly installed at the top of the sealing ring, the bottom face of the damping ring is attached to the top face of the cover body, a plurality of damping protruding blocks are integrally formed on the annular side face of the outer side of the damping ring, and the bottom faces of the damping protruding blocks can be attached to the upper surfaces of the fixing protruding blocks. The sound insulation protection effect is achieved through the outer sound insulation pad and the inner sound absorption pad.

Description

Technical Field

[0001] The utility model relates to the technical field of engine accessories, in particular to a multi-layer sound insulation and vibration reduction engine bearing cover. Background Art

[0002] With the rapid development of the automobile industry, consumers have increasing requirements for automobile comfort, quietness and reliability. The engine is the heart of the car, and the vibration and noise during its operation are one of the key factors affecting the overall performance of the vehicle, especially the engine bearing cover. Since it directly bears the high-speed rotation and complex stress of components such as the crankshaft, its vibration and noise problems are particularly prominent.

[0003] The traditional engine bearing cap is generally improved by improving its precision to ensure that the engine bearing cap and the corresponding shaft body are precisely matched to achieve the effect of eliminating noise. However, during the precise matching process, the bearing cap will still make slight noise when the vehicle is driving and encounters bumpy roads; in addition, with long-term use and wear caused by mutual friction, the bearing cap will also make noise, and it cannot be well soundproofed by the corresponding sound insulation materials, affecting the consumer experience. In view of this, we proposed a multi-layer sound insulation and shock-absorbing engine bearing cap. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-layer sound insulation and vibration reduction engine bearing cover to solve the defects mentioned in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multi-layer sound insulation and vibration reduction engine bearing cover, comprising a cover body, a mounting groove is provided in the middle of the top of the cover body, an inner sound insulation component is arranged in the mounting groove, the inner sound insulation component comprises an outer ring arranged in the mounting groove and rotatably connected with the mounting groove, an inner ring is provided on the inner side of the outer ring, an outer sound insulation pad and an inner sound absorption pad are provided between the outer ring and the inner ring, the outer sound insulation pad is sleeved on the outer side of the inner sound absorption pad, an annular groove is provided on the edge of the top surface of the cover body, a plurality of fixing protrusions arranged in an annular shape and at equal intervals are fixedly installed on the outer annular side surface of the cover body, a sealing ring is snap-fitted in the annular groove, a vibration reduction ring is fixedly installed on the top of the sealing ring, and the bottom surface of the vibration reduction ring is affixed to the top surface of the cover body.

[0007] Preferably, a plurality of shock-absorbing protrusions arranged in a ring shape with equal intervals are integrally formed on the outer annular side surface of the shock-absorbing ring, and the bottom surface of the shock-absorbing protrusion can be attached to the upper surface of the fixing protrusion.

[0008] Preferably, the size of the sealing ring is matched with the size of the annular groove, and the lower projections of the shock-absorbing protrusion and the fixing protrusion overlap.

[0009] Preferably, a bearing ring is fixedly installed at the center of the inner ring, and a bearing chamber is opened at the top of the bearing ring.

[0010] Preferably, a plurality of annular assembly protrusions arranged at equal intervals are fixedly installed between the bearing ring and the inner ring, and each of the assembly protrusions is provided with a through second heat dissipation hole.

[0011] Preferably, a through first heat dissipation hole is opened at the center of the bottom wall of the bearing chamber, and the first heat dissipation hole is smaller than the inner diameter of the bearing.

[0012] Preferably, a plurality of oil expansion and contraction grooves arranged at equal intervals are provided on the inner annular cavity wall of the bearing cavity, and the oil expansion and contraction grooves are not connected to the second heat dissipation holes.

[0013] Preferably, the oil expansion and contraction groove is less than half a spherical shape, and the oil expansion and contraction groove is located at half the height of the bearing ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can realize the shock-absorbing and buffering protection operation by means of the provided shock-absorbing ring, sealing ring and shock-absorbing protrusion. In addition, by means of the provided internal sound insulation component, the external sound insulation pad and the internal sound-absorbing pad can be used to achieve the effect of sound insulation protection. Even if slight noise is generated inside, it can be isolated and absorbed by the external sound insulation pad and the internal sound-absorbing pad, thereby reducing the generation of noise and achieving the effect of sound insulation and shock-absorbing and buffering protection of the bearing cover.

[0016] 2. The utility model provides the first heat dissipation hole and the second heat dissipation hole, which is beneficial to the timely dissipation of heat between the shaft and the bearing ring. In addition, the oil expansion and contraction groove is provided, so that the oil between the shaft and the bearing ring can enter the oil expansion and contraction groove for temporary storage after being squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 It is one of the partial structural schematic diagrams of the utility model;

[0020] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0021] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0022] The meaning of each number in the figure is:

[0023] 1. Cover body; 10. Assembly groove; 11. Annular groove; 12. Fixing protrusion;

[0024] 2. shock absorbing ring; 20. sealing ring; 21. shock absorbing convex block;

[0025] 3. Inner sound insulation component; 30. Outer ring; 31. Inner ring; 32. Outer sound insulation pad; 33. Inner sound absorption pad; 34. Bearing ring; 341. Bearing chamber; 35. First heat dissipation hole; 36. Oil expansion and contraction groove; 37. Assembly protrusion; 371. Second heat dissipation hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 The utility model provides a technical solution: a multi-layer sound insulation and shock absorption engine bearing cover, including a cover body 1, a mounting groove 10 is opened in the middle of the top of the cover body 1, an inner sound insulation component 3 is arranged in the mounting groove 10, and the inner sound insulation component 3 includes an outer ring 30 arranged in the mounting groove 10 and rotatably connected with the mounting groove 10, the outer ring 30 slides in contact with the inner wall of the mounting groove 10, and the rotating connection is conducive to reducing friction.

[0028] Specifically, an inner ring 31 is arranged on the inner side of the outer ring 30, the outer ring 30 and the inner ring 31 are open at the top and have a closed bottom, an outer sound insulation pad 32 and an inner sound absorbing pad 33 are arranged between the outer ring 30 and the inner ring 31, and the outer sound insulation pad 32 is sleeved on the outer side of the inner sound absorbing pad 33, thereby achieving the effect of sound insulation protection using the outer sound insulation pad 32 and the inner sound absorbing pad 33.

[0029] Specifically, an annular groove 11 is provided on the edge of the top surface of the cover body 1, and a plurality of fixed protrusions 12 arranged in an annular shape and at equal intervals are fixedly installed on the outer annular side surface of the cover body 1. A sealing ring 20 is snap-fitted in the annular groove 11, and a shock-absorbing ring 2 is fixedly installed on the top of the sealing ring 20. The inner diameter of the shock-absorbing ring 2 is smaller than the inner diameter of the outer ring 30, and the bottom surface of the shock-absorbing ring 2 can be attached to the top surface of the cover body 1, thereby achieving the effect of shock-absorbing protection by using the shock-absorbing ring 2 and the sealing ring 20. At the same time, the sealing ring 20 is stuck in the annular groove 11. After the cover body 1 is assembled, the sealing ring 20 is located between the cover body 1 and the engine housing, which can play a sealing effect and further reduce the propagation of noise in the cover body 1.

[0030] In this embodiment, a plurality of shock-absorbing protrusions 21 arranged in a ring shape with equal intervals are integrally formed on the outer annular side surface of the shock-absorbing ring 2. The bottom surface of the shock-absorbing protrusion 21 can fit on the upper surface of the fixed protrusion 12, so as to facilitate the fixed protrusion 12 to be fixedly connected with bolts. After the cover body 1 is assembled, the shock-absorbing protrusion 21 is located between the fixed protrusion 12 and the engine housing. The shock-absorbing protrusion 21 can absorb a certain vibration force and achieve a certain shock-absorbing protection effect.

[0031] Specifically, the size of the sealing ring 20 is matched with the size of the annular groove 11 , and the lower projections of the shock-absorbing protrusion 21 and the fixing protrusion 12 overlap, thereby achieving a stable assembly operation.

[0032] Furthermore, a bearing ring 34 is fixedly installed at the center of the inner ring 31. The top of the bearing ring 34 is open and the bottom is a closed structure. A bearing chamber 341 is opened at the top of the bearing ring 34. The bearing chamber 341 is used for the insertion and assembly of the shaft. A plurality of assembly protrusions 37 arranged in an annular shape and at equal intervals are fixedly installed between the bearing ring 34 and the inner ring 31. A through second heat dissipation hole 371 is opened in each assembly protrusion 37. A through first heat dissipation hole 35 is opened at the center of the bottom wall of the bearing chamber 341. The first heat dissipation hole 35 is smaller than the inner diameter of the bearing, so that heat dissipation operation is performed using the first heat dissipation hole 35 and the second heat dissipation hole 371.

[0033] In addition, a plurality of oil expansion and contraction grooves 36 are arranged at equal intervals on the annular cavity wall inside the bearing cavity 341, and the oil expansion and contraction grooves 36 are not connected to the second heat dissipation holes 371; the oil expansion and contraction grooves 36 are less than half a sphere, and the oil expansion and contraction grooves 36 are located at half the height of the bearing ring 34, so that after the oil between the shaft body and the bearing cavity 341 is squeezed and expanded, the excess oil can be temporarily stored in the oil expansion and contraction grooves 36.

[0034] When the multi-layer sound insulation and shock absorption engine bearing cover of the utility model is in use, the outer ring 30 is placed in the assembly groove 10, and then the sealing ring 20 is inserted into the annular groove 11, and at the same time, the bottom surface of the shock absorption ring 2 is made to fit on the top surface of the cover body 1, and the bottom surface of the shock absorption protrusion 21 is ensured to fit on the upper surface of the fixing protrusion 12. Finally, the cover body 1 is assembled on the engine housing, and the fixing protrusion 12 and the shock absorption protrusion 21 are fixed to the engine housing together with bolts to complete the assembly operation.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-layer sound-insulating and vibration-reducing engine bearing cover, comprising a cover body (1), characterized in that: A mounting groove (10) is provided in the middle of the top of the cover body (1), an inner sound insulation component (3) is arranged in the mounting groove (10), the inner sound insulation component (3) comprises an outer ring (30) arranged in the mounting groove (10) and rotatably connected to the mounting groove (10), an inner ring (31) is arranged on the inner side of the outer ring (30), an outer sound insulation pad (32) and an inner sound absorption pad (33) are arranged between the outer ring (30) and the inner ring (31), and the outer The sound insulation pad (32) is sleeved on the outside of the inner sound absorption pad (33); an annular groove (11) is provided on the edge of the top surface of the cover body (1); a plurality of fixed protrusions (12) arranged in an annular shape and at equal intervals are fixedly installed on the outer annular side surface of the cover body (1); a sealing ring (20) is snap-fitted in the annular groove (11); a shock-absorbing ring (2) is fixedly installed on the top of the sealing ring (20); and the bottom surface of the shock-absorbing ring (2) is in contact with the top surface of the cover body (1).

2. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 1 is characterized in that: A plurality of shock-absorbing protrusions (21) arranged in an annular shape and at equal intervals are integrally formed on the outer annular side surface of the shock-absorbing ring (2), and the bottom surface of the shock-absorbing protrusion (21) can be attached to the upper surface of the fixing protrusion (12).

3. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 2 is characterized in that: The size of the sealing ring (20) is matched to the size of the annular groove (11), and the lower projections of the shock-absorbing protrusion (21) and the fixing protrusion (12) overlap.

4. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 1 is characterized in that: A bearing ring (34) is fixedly mounted at the center of the inner ring (31), and a bearing chamber (341) is opened at the top of the bearing ring (34).

5. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 4 is characterized in that: A plurality of annular assembly protrusions (37) arranged at equal intervals are fixedly mounted between the bearing ring (34) and the inner ring (31), and each assembly protrusion (37) is provided with a through second heat dissipation hole (371).

6. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 5 is characterized in that: A through first heat dissipation hole (35) is provided at the center of the bottom wall of the bearing chamber (341), and the first heat dissipation hole (35) is smaller than the inner diameter of the bearing.

7. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 6 is characterized in that: A plurality of oil expansion and contraction grooves (36) arranged at equal intervals are provided on the annular cavity wall inside the bearing cavity (341), and the oil expansion and contraction grooves (36) are not connected to the second heat dissipation holes (371).

8. The multi-layer sound insulation and vibration reduction engine bearing cap according to claim 7 is characterized in that: The oil expansion and contraction groove (36) is smaller than half a sphere, and the oil expansion and contraction groove (36) is located at half the height of the bearing ring (34).

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