CN213167703U - Engine suspension device and automobile - Google Patents

Abstract

The present disclosure relates to the field of engine mount technology. Provided are an engine mount device and an automobile, the mount device including: a housing; the bottom plate is connected with the shell and is surrounded to form a lining cavity, and an opening is formed in the lining cavity on the shell; the elastic bushing is arranged in the bushing cavity and is arranged between the shell and the bottom plate in a compression mode, and the elastic bushing is provided with a supporting arm connecting part; and the bracket arm is provided with a bush connecting part and an engine connecting part, the bush connecting part is connected with the bracket arm connecting part, and the engine connecting part is exposed out of the opening and is used for connecting an engine. The elastic bushing with the pre-compression amount can enable the engine suspension device to support a heavier power assembly with a smaller compression amount, and meanwhile, the rigidity is located in a linear section; and when the whole vehicle idles, the engine suspension device works at a lower linear section rigidity, so that a better vibration isolation effect can be achieved.

Description

Engine suspension device and automobile

Technical Field

The disclosure relates to the technical field of engine suspension, in particular to an engine suspension device and an automobile.

Background

The power assembly of the hybrid vehicle consists of an engine, a speed reducer, a generator, a driving motor and a motor controller, and compared with the power assembly of a transmission gasoline vehicle, the power assembly is additionally provided with two motors and two motor controllers, and is heavier in weight. The design requirement of the static load compression amount of the automobile engine mount is about 5mm, and if the compression amount is too large, the durability and the vibration isolation performance of the engine mount are deteriorated. In the hybrid vehicle, the left suspension is loaded relatively heavily, with a static load of about 1400N. If the suspension has low rigidity and large pre-load deformation in the-Z direction (the height direction of the vehicle), the suspension has poor durability and the vibration isolation performance of the suspension in the acceleration stage is influenced; if the suspension stiffness is too high, the idle vibration isolation performance is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides an engine mount device and an automobile.

In a first aspect, an engine mount apparatus is provided, including:

a housing;

the bottom plate is connected with the shell and is encircled to form a lining cavity, and an opening is formed in the lining cavity on the shell;

the elastic bushing is arranged in the bushing cavity and is arranged between the shell and the bottom plate in a compression mode, and a supporting arm connecting part is arranged on the elastic bushing; and

the bracket arm is provided with a lining connecting part and an engine connecting part, the lining connecting part is connected with the bracket arm connecting part, and the engine connecting part is exposed out of the opening and is used for connecting an engine.

Optionally, the elastic bushing includes a bushing bracket and an elastic portion, a bottom of the bushing bracket abuts against the bottom plate, and the elastic portion is disposed between a top of the bushing bracket and the outer shell in a compressed manner; the bracket arm connecting part is connected to the elastic part.

Optionally, the bushing bracket is connected with the outer shell in a sliding guide fit manner in the deformation direction of the elastic part.

Optionally, the side of the bushing bracket is connected with the side of the outer shell in an interference fit manner.

Optionally, a step portion is arranged on the side portion of the outer shell, and the step portion is used for forming a limit with the top of the bushing bracket.

Optionally, the bottom of the bushing bracket is connected with the bottom plate in a positioning fit manner in a direction in which the bushing bracket is pulled out relative to the opening.

Optionally, a recessed portion is disposed at the top of the bushing bracket, and at least a portion of the elastic portion is embedded in the recessed portion.

Optionally, the outer shell is shaped like a Chinese character 'ji', and two ends of the Chinese character 'ji' shaped outer shell are respectively connected with the bottom plate.

Optionally, the elastic bushing has an elastic layer, and the elastic layer is arranged between the top of the outer shell and the bracket connecting part in a compression mode.

The present disclosure also provides an automobile, including a vehicle body, an engine, and a plurality of engine mount devices, the engine is connected to the vehicle body through the plurality of engine mount devices, and at least one of the plurality of engine mount devices is any one of the engine mount devices described above.

Because the elastic bushing is compressed and arranged between the outer shell and the bottom plate, a certain pre-compression amount is formed, and the elastic bushing with the pre-compression amount works in a non-linear section in a static state, so that higher rigidity can be provided. The engine mount is subjected to the dead load of the powertrain when assembled to the vehicle body. Because the engine suspension device has pre-compression amount, the elastic bushing can provide larger rigidity in the pre-compression section during the compression process, and the rigidity of the bushing works in the linear section beyond the deformation process of the pre-compression section. In this way, the engine suspension device can support a heavier power assembly with smaller compression amount, and meanwhile, the rigidity is positioned in a linear section; and when the whole vehicle idles, the engine suspension device works at a lower linear section rigidity, so that a better vibration isolation effect can be achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic diagram of an engine mount assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a housing of the engine mount of FIG. 1;

FIG. 3 is a schematic diagram of a resilient bushing in the engine mount of FIG. 1;

FIG. 4 is a schematic illustration of a structure of a bedplate in the engine mount of FIG. 1;

fig. 5 is a schematic structural view of a bracket arm in the engine mount of fig. 1.

Description of reference numerals:

100-housing, 120-liner cavity, 123-side of liner cavity, 124-top of housing, 125-stop groove, 130-step;

200-elastic bushing, 210-bushing holder, 220-elastic part, 230-protrusion, 240-bracket connection part, 250-limiting protrusion, 251-step part, 260-elastic layer, 270-recess part;

300-bottom plate, 310-groove;

400-trailing arm, 410-bushing connection, 420-engine connection.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure 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 disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

In the claims and the description of the present disclosure, the descriptions of the "top", "bottom", and "side" of each component are only for convenience of describing the relative orientation relationship of the components themselves and the relative orientation relationship between the components, and are not intended to limit the orientation of the components in the use state.

As shown in fig. 1, an engine mount apparatus provided in an embodiment of the present disclosure includes a housing 100, an elastic bushing 200, a base plate 300, and a bracket 400. The bottom plate 300 is used as a mounting plate, is connected with the casing 100 and surrounds to form a lining cavity 120, and the lining cavity 120 forms an opening on the casing 100; the elastic bushing 200 is installed in the bushing cavity 120 and is compressed between the outer shell 100 and the bottom plate 300, and the elastic bushing 200 is provided with a bracket connecting part 240; the bracket 400 has a bushing connecting portion 410 and an engine connecting portion 420, the bushing connecting portion 410 is connected to the bracket connecting portion 240, and the engine connecting portion 420 is exposed at an opening for connection to an engine.

According to the engine suspension device provided by the embodiment of the disclosure, since the elastic bushing 200 is compressed and arranged between the outer shell 100 and the bottom plate 300 to form a certain pre-compression amount, the elastic bushing 200 with the pre-compression amount works in a non-linear section in a static state, and thus, a larger rigidity can be provided. The engine mount is subjected to the dead load of the powertrain when assembled to the vehicle body. Because the engine mount has a pre-compression amount, the elastomeric bushing 200 provides a greater stiffness in the pre-compression section during compression, and the bushing stiffness operates in the linear section beyond the deformation of the pre-compression section. In this way, the engine suspension device can support a heavier power assembly with smaller compression amount, and meanwhile, the rigidity is positioned in a linear section; and when the whole vehicle idles, the engine suspension device works at a lower linear section rigidity, so that a better vibration isolation effect can be achieved.

The respective components of the engine mount device will be described in detail below.

As shown in fig. 1, 2 and 4, in some embodiments, the housing 100 is generally in a figure-of-several shape, and the figure-of-several shape is not meant to be the exact figure-of-several shape of the finger, but rather to refer to a general outline or shape. The outer side of the n-shaped casing 100 is provided with a plurality of ribs corresponding to the extending direction thereof, and both ends of the casing 100 can be respectively connected with the bottom plate 300 through flange structures, so as to enclose the annular closed bushing cavity 120, but the bushing cavity 120 is not necessarily closed loop, that is, the bottom plate 300 can also be connected with only one end or other parts of the casing 100, as long as the elastic bushing 200 can be compressed. Both circumferential ends of the delta-shaped housing 100 naturally form an opening so that the trailing arm connecting portion 240 can protrude or be exposed inside or outside the opening to achieve connection with the engine. Here, it should be noted that the shape of the housing 100 is not limited to a few figures, but may be a cylindrical, square barrel or other shape of the cover structure as long as it has a side portion connected to the base 300 and a top portion for pressing the elastic bushing 200.

Referring to fig. 2 and 3, in some embodiments, the elastic bushing 200 has a substantially convex shape, and includes a bushing bracket 210 and an elastic portion 220, and a bracket connecting portion 240 connected to the elastic portion 220. The bushing bracket 210 is a rigid bracket, and may be substantially box-shaped, which is equivalent to the elastic portion 220 installed in a box at the lower half thereof; wherein the bushing bracket 210 may also be a box-shaped or solid structure, and the elastic part 220 is installed at the top side of the bushing bracket 210. Of course, in other embodiments, the elastic bushing 200 may also be composed of only an elastic structure.

In some preferred embodiments, the top of the bushing bracket 210 is provided with a recess, and at least a portion of the elastic portion 220 is embedded in the recess, so that the bracket connecting portion 240 can be located closer to the bottom plate 300, and the suspension device can be more compact. In addition, in the embodiment in which the bushing bracket 210 is box-shaped or solid, the recess may also form a semi-surrounding support for the elastic part 220, so that stability and reliability of the elastic part 220 may be improved.

In some embodiments, the bushing bracket 210 is coupled with the housing 100 in a sliding guiding engagement in a deformation direction of the elastic portion 220, wherein the deformation direction refers to a direction in which the elastic portion 220 is compressed and expanded, and the sliding guiding refers to a sliding engagement in a set direction. Specifically, when the housing 100 is coupled to the base plate 200, the resilient portion 220 is compressed a set amount in a set direction, resulting in a set precompression effect. Specifically, the limiting protrusions 250 may be provided on two opposite sides of the bushing bracket 210, and the limiting grooves 125 may be provided on the sides of the casing 100 to be engaged therewith, although the positions of the limiting grooves 125 and the limiting protrusions 250 may be interchanged.

The stepped portion 130 is provided on the side of the housing 100, and the stepped portion 130 is used to form a stopper with the top of the bushing bracket 210, which can prevent the elastic bushing from being excessively compressed. Wherein the side of the bushing bracket 210 is preferably connected with the side of the outer casing (100) in an interference fit so as to make the fit between the outer casing 100 and the elastic bushing 100 tighter.

When the elastic bush 200 is assembled to the housing 100, the stopper protrusion 250 is engaged with the stopper groove 125, the stepped portion 130 is engaged with the reverse step 130, and the elastic layer 260 abuts against the top 124 of the housing, from the bottom of the housing 100 upward (Z direction) into the bush chamber 120. The two sides of the bushing bracket 210 are connected with the sides 123 of the bushing cavity in an interference fit manner. The engagement between the stepped portion 130 and the top of the bushing bracket 210 is a rigid structure engagement, and no compression occurs therebetween, so that the compression portion between the housing 100 and the elastic bushing 200 can be precisely controlled at the upper half portion of the elastic portion 220. Of course, the step limit fitting structure may not be provided between the housing 100 and the elastic bushing 200, and the elastic portion 220 may be pre-compressed, so that the engine suspension device has a better damping effect.

The top of the spring part 220 is provided with a spring layer 260, and the spring layer 260 is compressed by the top 124 of the housing when the spring part 220 is assembled to the housing 100, preferably by 1 mm. The bracket connecting portion 240 has a groove structure, and the opening direction is preferably perpendicular to the plane of the opening of the housing 100. The bottom of the bushing bracket 210 is also provided with a protrusion 230.

The bottom plate 300 is provided with a groove 310 in the middle, the groove 310 is adapted to the protrusion 230 of the bushing bracket 210, and the engaging structure can also provide a limiting function to prevent the elastic bushing 200 from coming out of the second opening 122, wherein the positions of the groove 310 and the protrusion 230 can also be interchanged as long as the bottom of the bushing bracket 210 and the bottom plate 300 can form a limiting engaging connection in the direction in which the bushing bracket 210 comes out of the opening of the housing 100. When the base plate 300 is assembled to the bottom of the housing 100, the protrusion 230 enters the groove 310. The elastic layer 260 is compressed under the clamping of the base plate 300 and the housing 100. In some alternative embodiments, the bottom plate 300 may not be provided with the groove 310, and the bottom of the bushing bracket 210 of the elastic bushing 200 may not be provided with the protrusion 230.

As shown in fig. 5, the bracket 400 includes a bushing connecting portion 410 and an engine connecting portion 420, the shape of the bushing connecting portion 410 is matched with the shape of the bracket connecting portion 240 of the elastic bushing 200, and the bushing connecting portion is a cylindrical structure with a rounded corner, and a free end of the bushing connecting portion can be provided with a screw hole to be fixed with the side portion of the housing 100. The engine connection part 420 includes a disk-shaped body on which a plug post and a socket are provided for connection with the engine.

In some embodiments, the elastomeric bushing 200 has an elastomeric layer 260, the elastomeric layer 260 being compressively disposed between the top 124 of the housing and the bracket connection 240. The engine suspension device is provided with a pre-compressed elastic bushing, and the elastic bushing is linearly deformed from-1 mm to-9 mm in a compressed deformation section and has lower rigidity. The suspension is assembled in a vehicle, and the rigidity working point of the suspension is in a deformation section of-5 mm when the suspension is under the static load of an engine. The suspension can provide smaller rigidity in the idle state of the vehicle, and has better vibration isolation function; meanwhile, the Z direction and the + Z direction (vertical direction) have longer linear section rigidity, so that better vibration isolation effect is achieved during acceleration and Z-direction jumping of the power assembly; furthermore, the low static compression of the elastic bushing contributes to its durability. In addition, during assembly, the elastic bushing 200 is pressed from the Z direction, and the elastic layer 260 can adjust the pre-compression amount as required, so that the problem of difficult assembly when the pre-compression amount is pressed in the Y direction (lateral direction) is solved.

In some alternative embodiments, the bushing bracket 210 may not be provided, and the elastic portion 220 is directly clamped between the bushing cavity 120 of the outer casing 100 and the bottom plate 300. In some alternative embodiments, the compression of the resilient protrusions 260 in the resilient bushing 200 may also be anywhere between 0.5mm and 1.5 mm.

The present disclosure also provides an automobile including a body, an engine, and a plurality of engine mount devices, the engine being connected to the body through the plurality of engine mount devices. At least one of the plurality of engine mount devices is the engine mount device described in any of the preceding embodiments.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An engine mount device, comprising:

a housing (100);

the bottom plate (300) is connected with the shell (100) and is encircled to form a lining cavity (120), and an opening is formed in the lining cavity (120) on the shell (100);

the elastic bushing (200) is arranged in the bushing cavity (120) and is arranged between the shell (100) and the bottom plate (300) in a compression mode, and a supporting arm connecting part (240) is arranged on the elastic bushing (200); and

the bracket (400) is provided with a bushing connecting part (410) and an engine connecting part (420), the bushing connecting part (410) is connected with the bracket connecting part (240), and the engine connecting part (420) is exposed out of the opening and is used for being connected with an engine.

2. The engine mount according to claim 1, characterized in that the elastic bush (200) includes a bush bracket (210) and an elastic portion (220), a bottom portion of the bush bracket (210) interferes with the bottom plate (300), and the elastic portion (220) is compressively disposed between a top portion of the bush bracket (210) and the outer case (100); the bracket arm connecting part (240) is connected to the elastic part (220).

3. The engine mount assembly according to claim 2, characterized in that the bushing bracket (210) is in sliding guiding fit connection with the outer shell (100) in a deformation direction of the elastic portion (220).

4. The engine mount of claim 2, characterized in that the sides of the bushing bracket (210) are connected with the sides of the outer case (100) in an interference fit.

5. The engine mount assembly of claim 2, characterized in that a step (130) is provided on a side of the outer case (100), the step (130) being configured to form a stop with a top of the bushing bracket (210).

6. The engine mount of claim 2, characterized in that the bottom of the bushing bracket (210) is in a stop-fit connection with the floor plate (300) in a direction in which the bushing bracket (210) is withdrawn relative to the opening.

7. The engine mount according to claim 2, characterized in that the bushing bracket (210) is provided at a top portion thereof with a recess, and at least a part of the elastic portion (220) is fitted in the recess.

8. The engine mount assembly of claim 1, wherein the outer case (100) has a zigzag shape, and both ends of the zigzag shape of the outer case (100) are connected to the base plate (300), respectively.

9. The engine mount of any one of claims 1 to 8, characterized in that the resilient bushing (200) has a resilient layer (260), the resilient layer (260) being disposed in compression between a top portion of the outer shell (100) and the bracket arm connection (240).

10. An automobile comprising a body, an engine and a plurality of engine mounts, the engine being connected to the body by the plurality of engine mounts, characterized in that at least one of the plurality of engine mounts is an engine mount according to any one of claims 1 to 9.

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