CN215444240U - Timing cover cap assembly and engine - Google Patents

Abstract

The utility model discloses a timing cover assembly of an engine, which comprises: a timing cover provided with a through hole; inhale sound and cover the cover, inhale sound cover set up in the surface of timing shroud and with timing shroud prescribes a limit to wheel body accommodation space jointly, wheel body accommodation space is used for holding the wheel body of the bent axle head of engine, wheel body accommodation space with the through-hole is linked together. Through the fine problem of the peripheral clearance of having solved the engine on the engine of timing shroud subassembly is little can't arrange the sound of inhaling and cover the cover, can effectively the separation come from the noise of engine, avoided the noise to pass through in automobile body and the air transmission car, cause the problem that subjective impression is poor for the passenger in the passenger cabin, improved the quality of car greatly and felt and passenger's comfort.

Description

Timing cover cap assembly and engine

Technical Field

The utility model relates to the technical field of automobile engines, in particular to a timing cover assembly of an engine.

Background

With the higher and higher requirements of consumers on the comfort of the automobile, manufacturers pay more and more attention to the NVH performance of the automobile. The engine noise is the key of the NVH of the whole vehicle, and the noise of the timing system contributes greatly to the engine noise. The existing timing cover belt pulley of the engine is arranged on the outer side of the timing cover, when the engine works, the noise generated by the gear train is relatively large, and the noise and the vibration are transmitted into the vehicle through the vehicle body and the air because the sound of the gear train is not blocked. The large noise in the passenger compartment has poor subjective feeling.

In the related art, the acoustic bag for solving the problem of engine noise is made of materials such as PET, foaming materials, bi-component sound-absorbing cotton and the like, and has poor rigidity and large deformation. Considering the deformation amount and other factors, the smaller position does not have enough space for arranging the traditional acoustics, so that the noise of the engine is larger, and the subjective feeling of passengers is poorer.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a timing cover assembly of an engine, in which a sound-absorbing cover is disposed on a timing cover, so as to solve the problem that the sound-absorbing cover cannot be disposed due to a small gap around the engine, and effectively block noise from the engine.

The utility model further provides an engine which is a device for providing power for the vehicle.

According to the timing cover assembly of the engine of the embodiment of the first aspect of the utility model, the timing cover assembly includes: a timing cover provided with a through hole; inhale sound and cover the cover, inhale sound cover set up in the surface of timing shroud and with timing shroud prescribes a limit to wheel body accommodation space jointly, wheel body accommodation space is used for holding the wheel body of the bent axle head of engine, wheel body accommodation space with the through-hole is linked together.

According to the timing cover cap provided by the embodiment of the utility model, the sound-absorbing cover cap is arranged on the timing cover cap, so that the problem that the sound-absorbing cover cap cannot be arranged due to small peripheral clearance of an engine is solved well, the sound-absorbing cover cap and the timing cover cap form a certain wheel body accommodating space together, and a crankshaft wheel body can be arranged in the accommodating space, so that noise from an engine wheel train is effectively blocked, the noise is prevented from being transmitted into a vehicle through a vehicle body and air, and the quality feeling of the vehicle and the comfort feeling of passengers are improved.

According to some embodiments of the utility model, the sound absorbing covering hood comprises: inhale sound covering and interior sound covering outward, interior sound covering set up in inhale the inboard of sound covering outward, inhale the sound covering outward set up in cover in right time.

According to some embodiments of the utility model, the outer sound absorbing cover is a PP fiberglass cover.

According to some embodiments of the utility model, the inner sound absorbing cover is a foam having sound absorbing holes formed therein.

According to some embodiments of the utility model, the inner acoustic cover is a flexible polyurethane foam.

According to some embodiments of the utility model, the inner sound absorbing cover is a soft foam, and a peripheral edge of the soft foam is located between a peripheral edge of the outer sound absorbing cover and the timing cover and is compressively deformed.

According to some embodiments of the utility model, the sound-absorbing cover is provided with a protrusion protruding towards the outside, the protrusion being provided with a wheel body receiving groove closed at the outside and open at the inside for receiving the wheel body.

According to some embodiments of the utility model, the sound absorbing covering hood comprises: the timing cover comprises a first cover body part and a second cover body part, wherein the second cover body part is connected to the upper part of the first cover body part and extends towards the upper part, the first cover body part is provided with the protrusion, and the second cover body part is attached to the upper part of the timing cover.

According to some embodiments of the utility model, the sound-absorbing cover is detachably provided to the timing cover; or the sound-absorbing cover is integrally formed on the timing cover.

An engine according to an embodiment of the second aspect of the utility model includes: a cylinder; a crankcase disposed at a bottom of the cylinder; the crankshaft is arranged in the crankcase, and a wheel body for balancing weight is arranged at the shaft end of the crankshaft;

according to some embodiments of the utility model, the timing cover assembly is disposed to the cylinder and the crankcase, and the wheel body is disposed in the wheel body accommodating space.

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

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 of the timing cover assembly assembled with an engine

FIG. 2 is a schematic structural view of a timing cover assembly;

FIG. 3 is an exploded schematic view of the timing cover assembly;

FIG. 4 is a cross-sectional view of the timing cover assembly;

FIG. 5 is a cross-sectional view of another angle of the timing cover assembly.

Reference numerals:

10. a timing cover assembly;

11. a timing cover; 12. a sound-absorbing cover; 13. a through hole; 14. a wheel body; 15. an outer surface; 16. a wheel body accommodating space; 17. an outer sound absorbing cover; 18. an inner sound absorption covering; 19. a protrusion; 20. a wheel body accommodating groove; 21. a first cover body portion; 22. a second cover body portion;

30. an engine.

Detailed Description

Referring now to fig. 1-5, a timing cover assembly 10 of an engine 30 according to an embodiment of the present invention is described, and the present invention also proposes an engine 30 having the timing cover 11 described above.

As shown in fig. 1 and 2, a timing cover assembly 10 of an engine 30 according to an embodiment of the first aspect of the present invention is connected to a block of the engine 30, and the timing cover assembly 10 includes: the timing cover 11 is arranged on the engine 30, specifically, the timing cover 11 is fixed on the side of the engine 30, and the inner surface of the timing cover 11 faces the crankshaft of the engine 30, so that the timing cover 11 can protect the timing chain system of the engine 30, prevent foreign matters from entering and engine oil from leaking, and can also reduce noise.

Further, the timing cover assembly 10 further includes a sound-absorbing cover 12, and the sound-absorbing cover 12 is provided on the timing cover 11. With this arrangement, the noise of the engine 30 can be effectively reduced and the comfort of the passenger can be improved by the dual functions of the sound-absorbing cover 12 and the timing cover 11.

And, the sound-absorbing cover 12 is provided on an outer surface 15 of the timing cover 11, and the sound-absorbing cover 12 and the timing cover 11 together define a wheel body accommodating space 16, the wheel body accommodating space 16 being for accommodating a wheel body 14 at a crankshaft end of the engine 30. That is to say, be equipped with at the lateral surface of timing shroud 11 and inhale sound cover 12, can be formed with certain wheel body accommodation space 16 between timing shroud 11 and the sound cover 12 for hold the wheel body 14 of bent axle head, so set up, the motion space of injecing wheel body 14 that can be fine, tightly wraps up it, fine noise that has weakened the transmission of engine 30 has saved the processing material.

Also, the timing cover 11 is provided with a through hole 13, and the wheel body accommodating space 16 communicates with the through hole 13, so that the wheel body 14 at the crankshaft end of the engine 30 can pass through the through hole 13.

From this, through set up at the surface 15 of timing shroud 11 and inhale sound cover 12, can be fine solve the problem that the outer sound cover 17 that inhales can't be arranged to the peripheral clearance of engine 30 is little, and inhale sound cover 12 and timing shroud 11 and formed certain wheel body accommodation space 16 jointly, can set up bent axle wheel body 14 in the accommodation space, the noise that effective separation comes from engine 30 train like this, avoided the noise to pass through the automobile body and the air transmission is to the car in, thereby passenger's use comfort has been improved.

As shown in fig. 3 and 4, the sound-absorbing cover 12 includes: an outer sound absorbing cover 17 and an inner sound absorbing cover 18, the inner sound absorbing cover 18 being provided on the inner side of the outer sound absorbing cover 17, the outer sound absorbing cover 17 being provided on the timing cover 11. That is, the sound-absorbing cover 12 includes two parts, i.e., an outer sound-absorbing cover 17 and an inner sound-absorbing cover 18, the inner sound-absorbing cover 18 is disposed inside the outer sound-absorbing cover 17, the outer sound-absorbing cover 17 is disposed on the timing cover 11, and the inner sound-absorbing cover 18 is in direct contact with the timing cover 11, so that the overall strength of the sound-absorbing cover 12 can be improved. In addition, the outer sound absorbing cover 17 and the inner sound absorbing cover 18 are used in combination, so that the sound absorbing effect of the sound absorbing cover can be improved, and noise from the gear train of the engine 30 can be further blocked.

Wherein, the external sound absorbing covering member 17 may be a PP glass fiber covering member. Specifically, the PP glass fiber covering piece can be a PP glass fiber board, the PP glass fiber board has the advantages of good hardness and strength performance, the manufacturing precision of the PP glass fiber board can reach +/-0.3 mm, which is far higher than that of the existing acoustic bag material, the PP glass fiber board can accurately control the product size of the external sound absorption covering piece 17, and the sufficient gap between the timing cover 11 of the engine 30 and the periphery is ensured. In addition, the PP glass fiber board has the advantages of good sound absorption performance, excellent mechanical property, low cost, simple process, larger expansion rate than that of the traditional hot-pressing material, capability of being made into a variable cross-section product, high dimensional stability and the like, and the problem that the outer sound absorption covering piece 17 cannot be arranged due to small peripheral clearance of the engine 30 is well solved. The PP glass fiber board is a plate-shaped structure formed by polypropylene glass fibers.

And, the inner sound absorbing cover 18 may be a foamed member in which a sound absorbing hole is formed. That is, the inner sound absorbing cover 18 is made of a foam material, which has advantages of light weight, good flexibility, and cushioning and sound absorption. Further, be equipped with in the foaming piece and inhale the sound hole, the noise that engine 30 sent can be along inhaling inside the sound hole deep-entering internal sound absorption covering 18 to the noise can take place the friction with the hole edge and turn into heat energy with acoustic energy, thereby makes engine 30's noise weaken, inhales the sound hole promptly and can improve the sound absorption performance of internal sound absorption covering 18.

Alternatively, inner acoustic cover 18 may be a flexible polyurethane foam. That is, the soft polyurethane foam part is composed of the soft polyurethane foam material, wherein, the soft polyurethane foam material has a large amount of inside tiny apertures, and the even cellular structure of distribution, these cellular structure are inside each other in the material together with, run through each other, and the micropore all opens outwards, and lead to with the external world, and the noise passes a hole transmission outside layer upon layer, has attenuated the sound energy greatly, thereby can play the effect of making an uproar of falling, in addition, soft polyurethane foam material still has advantages such as light, ventilative. Further, the thicker the soft polyurethane material is, the better the sound absorbing and insulating effect of the sound absorbing cover material is.

Alternatively, the inner sound absorbing cover 18 is a soft foam, and the peripheral edge of the soft foam is positioned between the peripheral edge of the outer sound absorbing cover 17 and the timing cover 11 and is compressively deformed. Thus, the inner sound absorbing cover 18 can be compressed and deformed with a small deformation amount, and the sealing and sound insulating performance of the inner sound absorbing cover 18 is effectively improved. Referring to fig. 4-5, the soft foaming member contacts with the timing cover, and there is a certain interference amount between the soft foaming member and the timing cover, specifically, the interference amount may be 2mm, and there is a 2mm compression amount at the peripheral edge of the soft foaming member during assembly, so that the sound-absorbing cover 12 has better sealing performance and better sound-absorbing and insulating effects.

In addition, as shown in fig. 2, the sound-absorbing cover 12 is provided with a protrusion 19 protruding outward, the protrusion 19 is provided with a wheel-receiving groove 20 closed at the outer side and opened at the inner side, and the wheel-receiving groove 20 is used for receiving the wheel 14. That is to say, inhale sound and cover 12 and be provided with the arch 19 towards the outside, adopted totally closed structure to hold bent wheel body 14 in inhaling sound and cover 12 inboardly, tightly wrapped up bent wheel body 14 with timing shroud 11 jointly, can effectively strengthen timing shroud 11 body mode like this, can keep apart the burning noise that comes from engine 30 better and to the transmission sound, greatly reduced product cost has reduced manufacturing procedure.

As shown in fig. 2, the sound-absorbing cover 12 includes: a first cover body part 21 and a second cover body part 22, wherein the second cover body part 22 is connected to the upper part of the first cover body part 21, the second cover body part 22 extends towards the upper part, the first cover body part 21 is provided with a projection 19, and the second cover body part 22 is attached to the upper part of the timing cover 11. With this arrangement, the first cover body 21 is provided with the protrusion 19, so that the wheel body can be conveniently matched with the wheel body accommodating space 16 in the protrusion 19. In addition, an avoiding groove is formed between the first cover body portion 21 and the second cover body portion 22, wherein the avoiding groove is used for avoiding the front longitudinal beam and is of a closed structure. In addition, the escape grooves can also be used to increase the strength of the sound-absorbing covering hood 12.

Further, the sound-absorbing cover cap 12 is detachably provided to the timing cover 11. Wherein, the periphery of cover 11 and the sound of inhaling between the cover 12 of covering can be equipped with corresponding through-hole in right time, and the through-hole can be the shaft hole, and the fastener passes through the shaft hole to be connected fixedly, so sets up, has avoided covering the problem that cover 10 changes in right time can not dismantle because of the sound of damage and has covered cover 12, has improved the utilization ratio that inhales sound cover 12, effectively the cost is reduced. Specifically, as shown in fig. 1, the timing cover 11 and the sound-absorbing cover 12 are mounted on the timing cover of the engine 30 by using five bolts with large spacers, and cover the crank wheel 14.

Of course, the sound-absorbing cover 12 can also be fixed on the timing cover 11 by clamping, for example, a buckle is arranged on the timing cover 11, a clamping groove is arranged on the sound-absorbing cover 12, and the buckle is matched with the clamping groove in a clamping manner, so that the sound-absorbing cover 12 and the timing cover 11 can be fixed together.

Alternatively, the sound-absorbing cover 12 may be integrally formed on the timing cover 11. That is, the sound-absorbing cover 12 and the timing cover 11 are provided as an integral structural member, which improves the integrity of the timing cover assembly 10 and facilitates the installation of the timing cover 11, i.e., simplifies the installation process.

As shown in fig. 1, an engine 30 according to the embodiment of the second aspect of the present invention includes: the method comprises the following steps: a cylinder, a crankcase disposed at the bottom of the cylinder, a crankshaft disposed within the crankcase, and a timing cover assembly 10. The crankcase is used for mounting a crankshaft, the crankshaft is the most important component in the engine 30, and the crankshaft is used for bearing the force transmitted by the connecting rod, converting the force into torque and outputting the torque through the crankshaft, and driving other accessories on the engine 30 to work. And, the crankshaft shaft end is provided with a wheel body 14 for counterweight, wherein, the wheel body 14 for counterweight is used for balancing the rotation inertia force and the moment thereof generated by the connecting rod big end, the connecting rod journal, the crank and the like, so that the crankshaft of the engine 30 runs smoothly.

In addition, the timing cover 11 is disposed on the cylinder and the crankcase, and the wheel 14 is at least partially disposed in the wheel-receiving groove 20. In this way, the weighted wheel 14 can be received in the wheel-receiving cavity 20, so as to protect the weighted wheel 14 and protect other structures of the engine 30.

And, the surface 15 of the timing cover 11 sets up and inhales the covering hood 12 of sound, and inhale the covering hood 12 of sound and cover the 11 and form certain wheel body accommodation space 16 together with the timing, can set up the crankshaft wheel body 14 in the accommodation space, effectively the separation comes from the noise of engine 30 train like this, has avoided the noise to pass through automobile body and air transmission to the car in, thereby has improved the quality sense of car and passenger's comfort.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A timing cover assembly for an engine, comprising:

a timing cover provided with a through hole;

inhale sound and cover the cover, inhale sound cover set up in the surface of timing shroud and with timing shroud prescribes a limit to wheel body accommodation space jointly, wheel body accommodation space is used for holding the wheel body of the bent axle head of engine, wheel body accommodation space with the through-hole is linked together.

2. The timing cover assembly of claim 1, wherein said sound absorbing cover comprises: inhale sound covering and interior sound covering outward, interior sound covering set up in inhale the inboard of sound covering outward, inhale the sound covering outward set up in cover in right time.

3. The timing cover assembly of claim 2, wherein said outer sound absorbing cover is a PP fiberglass cover.

4. The timing cover assembly according to any one of claims 2-3, wherein said internal sound absorbing cover is a foam member having sound absorbing holes formed therein.

5. The timing cover assembly of claim 4, wherein said inner sound absorbing cover is a flexible polyurethane foam.

6. The timing cover assembly according to claim 4, wherein said inner sound absorbing cover is a soft foam, a peripheral edge of said soft foam being located between a peripheral edge of said outer sound absorbing cover and said timing cover and compressively deformed.

7. The timing cover assembly according to claim 1, wherein said sound-absorbing cover is provided with a protrusion protruding toward the outside, said protrusion being provided with a wheel-receiving groove closed on the outside and open on the inside for receiving said wheel.

8. The timing cover assembly of claim 7, wherein said sound absorbing cover comprises: the timing cover comprises a first cover body part and a second cover body part, wherein the second cover body part is connected to the upper part of the first cover body part and extends towards the upper part, the first cover body part is provided with the protrusion, and the second cover body part is attached to the upper part of the timing cover.

9. The timing cover assembly according to claim 1, wherein said sound-absorbing cover is detachably provided to said timing cover; or

The sound-absorbing cover is integrally formed on the timing cover.

10. An engine, comprising:

a cylinder;

a crankcase disposed at a bottom of the cylinder;

the crankshaft is arranged in the crankcase, and a wheel body for balancing weight is arranged at the shaft end of the crankshaft;

the timing cover assembly of the engine of any one of claims 1-9, said timing cover being disposed to said cylinder and said crankcase, said wheel being disposed in said wheel receiving space.

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