Power assembly mounting structure and vehicle
Technical Field
The utility model relates to the technical field of vehicle parts, in particular to a power assembly mounting structure. Meanwhile, the utility model also relates to a vehicle with the power assembly mounting structure.
Background
Along with the high-speed development of automobile technology, in order to meet the concept of energy conservation and emission reduction, the pure electric automobile rises. The power assembly (driving bridge) of the pure electric automobile is connected to the frame through the suspension element, so that the vibration of the power assembly is absorbed through the suspension element, and the vibration response of the pavement exciting force to the power assembly is weakened, so that the key parts of the driving bridge are protected in the use process of the automobile.
The prior art suspension systems are comprised of three suspension assemblies and one or three suspension brackets. The suspension assembly, the suspension support and the power assembly (driving bridge) are designed in an independent structure, and the types and the quantity of the components of the system are large, so that the weight and the cost of the whole power system are high, and meanwhile, the requirements on the connection strength of the power system and the frame, the performances such as the mode and the like are high.
In order to ensure the performance indexes such as strength, rigidity, mode and the like among the systems, the problems of thick material and large consumption exist at the connecting parts of the suspension framework and the driving bridge shell, and the production cost and the weight are high. The variety and number of parts also result in poor ease of assembly and controllability of dimensional tolerances of the drive bridge.
At present, the conventional structure of the cooperation of the suspension bushing and the suspension skeleton is adopted in the suspension assembly, so that the sizes of a plurality of bushings are not uniform when the power assembly is installed, and a suspension bracket which is designed independently is required, so that the types and the number of parts and standard parts of the suspension system are large, and the cost and the weight of the suspension assembly are high. Meanwhile, the auxiliary frame cross beam is required to provide a welding bracket structure for suspension, so that the auxiliary frame is complicated in manufacturing process and high in production cost and weight due to the fact that the auxiliary frame cross beam is matched with the installation of a plurality of bushings.
In addition, when the motor drive bridge and the suspension system are designed independently, the engagement length of the suspension bolts or the threaded holes is long, so that the motor drive bridge is easy to invade the interior of the drive bridge, and the arrangement or structural design of precise components in the drive bridge is influenced.
Disclosure of utility model
In view of the foregoing, the present utility model is directed to a powertrain mounting structure that facilitates reducing a number of components of the powertrain.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
The power assembly mounting structure comprises at least three assembly cavities which are arranged on a shell of a power assembly in a non-same-side mode, a plurality of main suspension bushings respectively pressed in the assembly cavities, and a plurality of connecting pieces which are arranged corresponding to the main suspension bushings, wherein one ends of the connecting pieces are connected to a frame, and the other ends of the connecting pieces are connected to inner cores of the corresponding main suspension bushings.
Further, the outer tube of the main suspension bushing comprises a cylindrical main body part and a turned-over edge arranged at one end of the main body part, the main body part is pressed in the assembly cavity, and the turned-over edge is erected at the cavity opening of the assembly cavity.
Further, a drain hole for draining accumulated water is arranged in the assembly cavity.
Further, the assembly cavity comprises a first assembly cavity and a second assembly cavity which are oppositely arranged at the left side and the right side of the shell, and a third assembly cavity which is arranged at the front end or the rear end of the shell.
Further, the axes of the first fitting chamber and the second fitting chamber are each arranged in the left-right direction of the vehicle, and the axis of the third fitting chamber is arranged in the front-rear direction of the vehicle.
The auxiliary suspension bushings are arranged corresponding to the main suspension bushings, the outer tubes of the auxiliary suspension bushings are fixedly arranged on the frame, the connecting pieces are arranged in the inner cores of the corresponding auxiliary suspension bushings in a penetrating mode, and the inner cores of the auxiliary suspension bushings are in abutting connection with the inner cores of the corresponding main suspension bushings.
Further, the frame is provided with a hollow beam body, the auxiliary suspension bushing is arranged on the side wall of the beam body facing one side of the power assembly, an operation hole opposite to the auxiliary suspension bushing is formed in the side wall of the beam body facing away from one side of the power assembly, and the connecting piece is arranged in the inner core of the auxiliary suspension bushing in a penetrating mode through the operation hole.
Further, a through mounting cavity is formed in the side wall of the beam body facing one side of the power assembly, and the auxiliary suspension bushing is pressed into the mounting cavity.
Further, the connecting piece comprises a bolt, the bolt penetrates through the inner core of the corresponding auxiliary suspension bushing and is screwed into the inner core of the corresponding main suspension bushing, and the head of the bolt is reserved in the beam body.
Compared with the prior art, the utility model has the following advantages:
According to the power assembly mounting structure, at least three assembly cavities which are not on the same side are arranged on the shell of the power assembly, and the main suspension bushings are respectively pressed in the assembly cavities, so that the main suspension bushings are integrated on the shell of the power assembly, and the power assembly can be mounted on the frame through the plurality of connecting pieces corresponding to the main suspension bushings, thereby being beneficial to reducing the number of parts required by the assembly of the power assembly, reducing the weight and the production cost, simplifying the assembly process of the power assembly and improving the assembly efficiency of the power assembly.
In addition, the cylindrical main body part and the flanging are simple in structure and convenient to machine and shape, and the main suspension bushing can be limited in the corresponding assembly cavity through the flanging which is erected at the cavity opening of the assembly cavity. The drain hole for draining accumulated water is arranged in the assembly cavity, so that the outer pipe of the main suspension bushing is prevented from being corroded due to accumulated water in the assembly cavity, and the service life of the main suspension bushing is prolonged. The first assembly cavity and the second assembly cavity on the left side and the right side and the third assembly cavity on the front end or the rear end of the shell can enable the three main suspension bushings to be arranged in a triangle shape, so that the stability of the power assembly in installation is improved.
In addition, the axis in first assembly chamber and second assembly chamber all is arranged along the left and right direction of vehicle, and the axis in third assembly chamber is arranged along the fore-and-aft direction of vehicle, and not only be convenient for arrange the implementation, and do benefit to the result of use that further improves three main suspension bush, further promote the installation stability of power assembly. Through a plurality of auxiliary suspension bushes that correspond each main suspension bush setting on the frame, the connecting piece wears to adorn in the inner core of corresponding auxiliary suspension bush for the inner core of auxiliary suspension bush links to each other with the inner core butt of corresponding main suspension bush, can realize the secondary damping through auxiliary suspension bush cooperation main suspension bush, thereby does benefit to the NVH performance that promotes whole car. The arrangement of the beam body and the operation hole in the frame is not only beneficial to the arrangement and installation of the auxiliary suspension bushing in the frame, but also beneficial to the connection of the operation connecting piece.
Furthermore, the mounting cavity that link up on the roof beam body to and vice suspension bush pressure equipment is in the mounting cavity for vice suspension bush integration is on the frame, does benefit to the quantity that reduces spare part, and the installation of the vice suspension bush of being convenient for, and the simple structure in mounting cavity easily process shaping simultaneously. The bolt passes the inner core of corresponding vice suspension bush to the spiro union is in the inner core of corresponding main suspension bush, and the head of bolt is left in the roof beam body, not only easily realizes the connection of frame and vice suspension bush and main suspension bush, has still saved the structure of nut moreover, thereby further reduces the quantity of spare part, and the connection convenient operation of bolt, and it is effectual to connect.
In addition, another object of the present utility model is to provide a vehicle in which a powertrain is mounted on a frame using the powertrain mounting structure as described above.
The vehicle is mounted on the frame by adopting the power assembly mounting structure, so that the improvement of the power assembly mounting efficiency and the reduction of the production cost are facilitated, and the improvement of the mounting effect of the power assembly on the frame is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model, wherein the words of front and back, top and bottom, etc. are used to indicate relative position and are not intended to limit the utility model unduly. In the drawings:
FIG. 1 is a schematic view of a powertrain mounting structure and a frame and powertrain in an assembled state according to an embodiment of the present utility model;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a schematic view of a powertrain mounting structure and a powertrain in a connected state according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a powertrain and a main suspension liner in an assembled state according to an embodiment of the present utility model;
FIG. 6 is a schematic view of a powertrain according to an embodiment of the present utility model;
FIG. 7 is a schematic view of a powertrain according to an embodiment of the present utility model from another perspective;
FIG. 8 is a schematic view of a main suspension liner according to an embodiment of the present utility model;
FIG. 9 is a schematic view of a main suspension liner according to an embodiment of the present utility model from another perspective;
FIG. 10 is a schematic view illustrating a structure of a frame and a sub-suspension bushing in an assembled state according to an embodiment of the present utility model;
FIG. 11 is a schematic view of a frame according to an embodiment of the present utility model;
fig. 12 is a schematic structural view of a secondary suspension liner according to an embodiment of the present utility model.
Reference numerals illustrate:
1. The vehicle comprises a vehicle frame, 10 parts, a beam body, 100 parts, side walls, 11 parts, a mounting cavity, 12 parts, an operation hole, 2 parts, a power assembly, 20 parts, a shell, 210 parts, a water drain hole, 211 parts, a first assembly cavity, 212 parts, a second assembly cavity, 213 parts, a third assembly cavity, 214 parts, a cylindrical bulge, 215 parts, a transverse part, 216 parts, a longitudinal part, 31 parts, a main suspension bushing, 310 parts, a first outer tube, 311 parts, a main body part, 312 parts, a first inner core, 313 parts, flanges, 314 parts, threaded holes, 32 parts, a secondary suspension bushing, 321 parts, a second outer tube, 322 parts, a second inner core, 323 parts, through holes, 400 parts and bolts.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, the terms "upper, lower, left, right, front, and rear" used in the present embodiment are defined with reference to the up-down direction, the left-right direction, and the front-rear direction of the vehicle. Wherein the up-down direction of the vehicle, i.e., the height direction of the vehicle, the front-back direction of the vehicle, i.e., the longitudinal direction of the vehicle, and the left-right direction of the vehicle, i.e., the width direction of the vehicle. In addition, the terms "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the components may be fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or communicated with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The present embodiment relates to a powertrain mounting structure, aiming at reducing the number of parts required for assembling the powertrain 2 by optimizing the design of the mounting structure.
The power assembly mounting structure comprises at least three assembly cavities arranged on the shell 20 of the power assembly 2 in a non-same side manner, a plurality of main suspension bushings 31 respectively press-fitted in the assembly cavities, and a plurality of connecting pieces arranged corresponding to the main suspension bushings 31. One end of the connecting member is connected to the frame 1 and the other end is connected to the inner core of the corresponding main suspension bushing 31.
In the power assembly installation structure of the present embodiment, at least three assembly cavities on the non-identical side are provided on the housing 20 of the power assembly 2, and the main suspension bushings 31 are respectively press-fitted in the respective assembly cavities, so that the main suspension bushings 31 are integrated on the housing 20 of the power assembly 2. And through a plurality of connecting pieces that correspond each main suspension bush 31 and set up, can link together power assembly 2, frame 1 and main suspension bush 31, realize the installation of power assembly 2 on frame 1, do benefit to the quantity that reduces the required spare part of power assembly 2 assembly to do benefit to weight reduction and manufacturing cost, still do benefit to simultaneously and simplify the assembly process of power assembly 2, and then improve the assembly efficiency of power assembly 2.
Based on the above general description, an exemplary structure of the powertrain mounting structure described in the present embodiment is shown in fig. 1 and 2. The frame 1 in the present embodiment may be a front frame 1 of a vehicle, and the powertrain 2 may employ a driving bridge in the related art, and the powertrain 2 is mounted on the front frame 1 by the mounting structure in the present embodiment.
For example, as shown in the drawings, the powertrain 2 has a "T" shape and has a lateral portion 215 extending in the left-right direction of the entire vehicle, and a longitudinal portion 216 extending in the front-rear direction of the entire vehicle. The frame 1 is hollow frame-shaped, and the power assembly 2 is positioned in the frame 1. The distance between the rear parts of the left side and the right side of the frame 1 is gradually reduced along the direction away from the head of the vehicle. This facilitates a reduction in the space occupation of the vehicle frame 1 and a compact arrangement of the powertrain 2.
As a preferred embodiment, as shown in fig. 5 to 7, the fitting chambers include first and second fitting chambers 211 and 212 oppositely provided at left and right sides of the housing 20, and a third fitting chamber 213 provided at a rear end of the housing 20. That is, the first fitting chamber 211 and the second fitting chamber 212 are provided at both ends of the lateral portion 215, respectively, and the third fitting chamber 213 is provided at the rear end of the longitudinal portion 216. The arrangement is such that the three assembly cavities are arranged on the frame 1 in a triangle shape, and the stability of the main suspension bushing 31 in use is improved by utilizing the characteristic that the triangle shape has better stability, so that the connection stability between the power assembly 2 and the frame 1 is improved.
Further, the axes of the first fitting chamber 211 and the second fitting chamber 212 are each arranged in the left-right direction of the vehicle, and the axis of the third fitting chamber 213 is arranged in the front-rear direction of the vehicle. Specifically, the two ends of the transverse portion 215 and the rear end of the longitudinal portion 216 of the power assembly 2 are respectively provided with the outwardly convex cylindrical projections 214, and the fitting cavities are respectively formed inside the corresponding cylindrical projections 214. By the arrangement, the installation convenience of the main suspension bushing 31 in the corresponding assembly cavity is improved, and the connection effect between the main suspension bushing 31 and the power assembly 2 is improved.
It should be noted that, in addition to the third fitting chamber 213 being provided at the rear end of the frame 1, the third fitting chamber 213 in this embodiment may be provided at the front end of the frame 1. In addition, the number of the assembly cavities is increased according to the use requirement besides three. In this embodiment, the arrangement of the plurality of fitting chambers to be satisfied on the non-identical side means that it is impossible to arrange all of the fitting chambers on the same side of the frame 1 to ensure the mounting stability of the power assembly 2.
As a preferred embodiment, as shown in fig. 3, 8 and 9, the outer tube of the main suspension bush 31 includes a cylindrical main body portion 311, and a flange 313 provided at one end of the main body portion 311, the main body portion 311 being press-fitted into the fitting chamber, the flange 313 being erected at the mouth of the fitting chamber. To distinguish from the structure of the secondary suspension bushing 32 described below, the outer tube in the primary suspension bushing 31 is referred to as a first outer tube 310 and the inner core is referred to as a first inner core 312.
In particular, the first outer tube 310 is made of a metal material, and the inner core of the first inner core 312 made of a rubber material is formed inside the first outer tube 310. The flange 313 is overlapped at the cavity opening of the assembly cavity, namely, the flange 313 is overlapped on the cylindrical protrusion 214. Here, the flange 313 is overlapped at the cavity mouth of the assembly cavity, so that the first outer tube 310 which is pressed in place can be limited to move into the assembly cavity continuously, and the main suspension bush 31 is ensured to be installed in place in the assembly cavity. The main body 311 in this embodiment is press-fitted into the assembly cavity, and is integrated on the housing 20 through the main suspension bush 31, which is beneficial to the joint shipment of the main suspension bush and the housing 20, and is beneficial to improving the assembly efficiency of the main suspension in the corresponding assembly cavity.
As shown in fig. 3, a drain hole 210 for draining accumulated water is provided in the assembly chamber. The drain holes 210 herein facilitate preventing the first outer tube 310 of the main suspension bushing 31 from being corroded by water accumulation in the assembly chamber, thereby facilitating the extension of the service life of the main suspension bushing 31. In a specific structure, a cavity is formed between the inner end of the main suspension bushing 31 and the inner end of the assembly cavity in the assembled state, and the drain hole 210 is disposed at the bottom of the cavity (i.e., the portion facing the vehicle bottom) so as to facilitate the drainage of accumulated water entering the cavity due to gravity. Further, the drainage holes 210 are arranged at the bottom of the cavity along the circumferential direction of the cavity at intervals, so as to further improve the drainage efficiency of the accumulated water.
As a preferred embodiment, as shown in fig. 4 and 12, the powertrain mounting structure in the present embodiment further includes a plurality of sub suspension bushings 32 provided corresponding to the respective main suspension bushings 31. The outer tube of the auxiliary suspension bush 32 is fixedly mounted on the frame 1, the connecting piece is arranged in the inner core of the corresponding auxiliary suspension bush 32 in a penetrating manner, and the inner core of the auxiliary suspension bush 32 is in abutting connection with the inner core of the corresponding main suspension bush 31. For convenience of distinction, the outer tube in the secondary suspension liner 32 is referred to as a second outer tube 321, and the inner core is referred to as a second inner core 322.
In this embodiment, through a plurality of auxiliary suspension bushings 32 corresponding to each main suspension bushing 31 disposed on the vehicle frame 1, the connecting piece is installed in the second core 322 of the corresponding auxiliary suspension bushing 32 in a penetrating manner, so that the second core 322 of the auxiliary suspension bushing 32 is connected with the first core 312 of the corresponding main suspension bushing 31 in an abutting manner, and the auxiliary suspension bushing 32 is matched with the main suspension bushing 31 to realize secondary vibration reduction, thereby further improving the NVH performance of the whole vehicle.
In detail, as shown in fig. 10 and 11, the frame 1 has a hollow beam body 10, a secondary suspension bushing 32 is disposed on a side wall 100 of the beam body 10 facing the power assembly 2, and an operation hole 12 facing the secondary suspension bushing 32 is formed in the side wall 100 of the beam body 10 facing away from the power assembly 2, and a connector is inserted into an inner core of the secondary suspension bushing 32 through the operation hole 12. The arrangement of the beam body 10 and the operation hole 12 in the frame 1 is not only beneficial to the arrangement and installation of the auxiliary suspension bushing 32 in the frame 1, but also beneficial to the connection of the operation connecting piece.
In order to facilitate the installation of the secondary suspension bush 32, as shown in fig. 3 and 11, a through installation cavity 11 is formed in a side wall 100 of the beam body 10 facing the power assembly 2, and the secondary suspension bush 32 is press-fitted into the installation cavity 11. The through installation cavity 11 on the beam body 10 and the auxiliary suspension bushing 32 are pressed into the installation cavity 11, so that the auxiliary suspension bushing 32 is integrated on the frame 1, and the auxiliary suspension bushing and the installation cavity can be matched together. Compared with the scheme that the conventional suspension bushing is required to use the suspension transfer bracket, the suspension bracket structure is not required to be welded on the frame 1, so that the number of parts is reduced, the installation of the auxiliary suspension bushing 32 is facilitated, and meanwhile, the installation cavity 11 is simple in structure and easy to process and shape.
In addition, as shown in connection with fig. 3 and 4, the connection member in the present embodiment includes a bolt 400, the bolt 400 passing through the second core 322 of the corresponding sub-suspension bushing 32 and being screwed into the first core 312 of the corresponding main suspension bushing 31, the head of the bolt 400 being left inside the beam body 10. The first core 312 is provided with a screw hole 314 having an opening facing outward, and the second core 322 is provided with a through hole 323 through which the shank of the bolt 400 passes.
In particular operation, the bolt 400 is screwed into the threaded hole 314 of the first core 312 through the through hole 323 of the second core 322 by the operation hole 12. When the bolt 400 is fastened in place, the head of the bolt 400 abuts against the outer side of the second inner core 322, thereby connecting the frame 1 with the sub suspension bushing 32 and the main suspension bushing 31, and completing the installation of the powertrain 2 on the frame 1.
So set up, not only easily realize the connection of frame 1 with vice suspension bush 32 and main suspension bush 31, but also saved the structure of nut to do benefit to the quantity that further reduces spare part, and the connection operation of bolt 400 is convenient, and the connection effect is good.
As a preferred embodiment, in this embodiment, the main suspension bushes 31 are identical in specification, and the sub suspension bushes 32 are identical in specification, which is advantageous for further reducing the types of parts and reducing the production cost.
In the power assembly installation structure in this embodiment, the main suspension bush 31 is integrated on the housing 20 of the power assembly 2, the auxiliary suspension bush 32 is integrated on the beam body 10 of the vehicle frame 1, and then the main suspension bush 31 and the auxiliary suspension bush 32 are connected through the connecting piece, so that the installation of the power assembly 2 on the vehicle frame 1 can be completed. The number of parts required in the whole power assembly 2 installation process is less, the operation is simpler, the connection stability is good, and the use effect of the power assembly 2 is improved.
In addition, the power assembly mounting structure in the embodiment is beneficial to improving the integration and compact design of the power assembly 2, the suspension bushing and the frame 1, is beneficial to improving the strength and the mode of the whole structure, and has better use performance.
Example two
The present embodiment also relates to a vehicle in which the powertrain 2 of the vehicle is mounted to the frame 1 using the powertrain mounting structure described in the first embodiment.
The vehicle of the embodiment is mounted on the frame 1 by adopting the power assembly mounting structure, which is beneficial to improving the mounting efficiency of the power assembly 2, reducing the production cost and improving the mounting effect of the power assembly 2 on the frame 1.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.