CN107554271A - A kind of right suspension for engine assembly of the antitorque connecting rod of band - Google Patents

Abstract

The present invention relates to a kind of right suspension for engine assembly of the antitorque connecting rod of band, belongs to automobile engine mounting structure technical field.Including suspending soft cushion assembly, engine side mounting bracket and antitorque connecting rod ASSY, described suspending soft cushion assembly is assemblied in the lower section of engine side mounting bracket, and the antitorque connecting rod ASSY is assemblied in above engine side mounting bracket.The present invention is compact-sized, while realizing low frequency vibration isolation, can also limit torsional displacement caused by power assembly high pulling torque, can not only effectively avoid power assembly from colliding and interfere with environment part, also can guarantee that the NVH performances of vehicle.

Description

Engine right suspension assembly with torsion-resistant connecting rod

technical field

The invention relates to the technical field of automobile engine installation structures, in particular to an engine right suspension assembly with a torsion-resistant connecting rod.

Background technique

The layout of the powertrain of existing cars generally adopts the horizontal front-drive type. The fluid resistance mount is widely used in the engine mount due to its large damping and high stiffness characteristics, which can effectively isolate low-frequency vibrations. The torsional movement of the powertrain caused by the output torque in a short period of time will have a large impact on the vehicle, and the anti-torsion device is used in the front or rear suspension, such as Chinese invention patents CN201410596597.0, CN201210253878.7, etc. However, the torque and displacement of the powertrain of the car are also increasing. Due to the high chassis of the SUV model and the high position of the suspension point, only the above existing structure is far from being able to solve the impact of high torque on the vehicle, which seriously affects the NVH performance of the vehicle.

Contents of the invention

The object of the present invention is to provide a right engine suspension assembly with a torsion-resistant connecting rod aiming at the defects of the prior art.

The technical solution adopted in the present invention is: comprising a suspension cushion assembly, an engine side suspension bracket and a torsion-resistant link assembly, the suspension cushion assembly is assembled under the engine side suspension bracket, the The anti-torsion link assembly is assembled above the engine side suspension bracket.

In a further preferred structure, the suspension cushion assembly includes a mounting flange at the bottom, a rubber main spring in the middle, a fluid resistance suspension and a connecting part at the top; the fluid resistance suspension is located on the outer ring of the rubber main spring.

In a further preferred structure, the mounting flange includes three edges and is distributed in a circle, and each mounting flange is provided with an oblong mounting hole for connecting with the vehicle body; the first oblong hole on the two mounting flanges It is set to be adjustable in the X direction and positioned in the Y direction of the whole vehicle, and the second oblong hole on the other mounting flange is set to be adjustable in the Y direction and positioned in the X direction of the whole vehicle.

In the above solution, the three oblong holes work together to realize the two-way adjustable X/Y in the actual loading, and can accurately position the function, avoiding the problem of difficult or even impossible installation.

In a further preferred structure, the connecting part is vulcanized integrally with the rubber main spring, and a threaded stud is provided on the top for assembly and connection with the engine side suspension bracket.

In a further preferred structure, the suspension bracket on the engine side includes a base, an engine installation hole is opened on the upper end surface of one side of the base for connecting with the engine, and the other side of the base is concavely formed to accommodate the The U-shaped groove of the connecting rod assembly, the bottom of the U-shaped groove is provided with the mounting holes for the suspension cushion assembly for assembly with the suspension cushion assembly, and the bases on both sides above the U-shaped groove are respectively A connecting ear is provided, and a first torsion-resistant link assembly assembly hole and a second torsion-resistant link assembly assembly hole for assembling with the torsion link assembly are opened on the connection ear.

In a further preferred structure, a drainage hole is opened at the bottom of the U-shaped groove.

In a further preferred structure, the torsion-resistant connecting rod assembly includes a torsion-resistant connecting rod bracket, a large-end bushing and a small-end bushing respectively arranged at both ends of the torsion-resistant connecting rod bracket, and the inner ring of the big-end bushing is provided with The first rubber cushion and the first inner skeleton, the first installation hole is opened on the first inner skeleton, the inner ring of the small end bush is provided with the second rubber cushion and the second inner skeleton, the second A second mounting hole is opened on the inner frame.

The soft cushion assembly of the liquid resistance mount of the present invention can overcome the disadvantages of general rubber mounts that the rigidity and damping cannot be adjusted, and effectively realize the characteristics of large stiffness and large damping at low frequencies and small stiffness and small damping at high frequencies, thus playing a good isolation The vibration effect ensures the NVH performance of the whole vehicle. However, while realizing its vibration isolation characteristics, the general liquid resistance mount needs to set up a special limit structure to limit the large torque output by the powertrain or the large displacement when it is impacted. In this way, the structure of the mount cushion assembly will It will be complicated and the layout space will be large. The invention adopts the torsion-resistant connecting rod assembly structure, which can not only realize the X-direction limit of the engine mount assembly, limit the rotational displacement generated by the large torque of the power assembly, but also control the stiffness of the large and small end bushes through separate debugging. Achieve vehicle NVH performance. Therefore, this kind of engine mount assembly can realize the maximum commonality of the mount cushion assembly of vehicles on the same platform, thereby saving development costs, and at the same time, has a compact structure and saves layout space.

The invention has a compact structure, can realize low-frequency vibration isolation, and can also limit the torsional displacement generated by the large torque of the power assembly, not only can effectively avoid the collision and interference between the power assembly and the environmental components, but also can ensure the NVH performance of the whole vehicle.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the suspension cushion assembly of the present invention;

Fig. 3 is a structural schematic diagram of the engine side suspension bracket of the present invention;

Fig. 4 is a structural schematic diagram of the torsion-resistant connecting rod assembly of the present invention.

Among them: 1-Suspension cushion assembly, 11-Fluid resistance suspension, 12-Installation flange, 13-Connection part, 121-First oblong hole, 122-Second oblong hole, 131-Stud, 2- Engine side suspension bracket, 21-Engine mounting hole, 22-Mounting cushion assembly assembly hole, 23-First torsion-resistant link assembly assembly hole, 24-Second torsion-resistant link assembly assembly hole, 25 -drain hole, 26-U-shaped groove, 3-torsion-resistant link assembly, 31-torsion-resistant link bracket, 32-small end bushing, 321-second rubber cushion, 322-second inner frame, 323 -the second installation hole, 33-big end bushing, 331-the first rubber cushion, 332-the first inner frame, 333-the first installation hole, 4-nut, 5-bolt.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

As shown in Figure 1, in the three-dimensional coordinate system shown in the figure, X represents the length direction of the vehicle, Y represents the width direction of the vehicle, and Z represents the height direction of the vehicle. The suspension cushion assembly 1 is assembled under the suspension bracket 2 on the engine side, and is tightened by a nut 4 . The anti-torque connecting rod assembly 3 is assembled in the U-shaped groove 26 of the suspension bracket 2 on the engine side, and is tightened by the bolt 5 .

As shown in FIG. 2 , the suspension cushion assembly 1 is composed of a liquid resistance suspension 11 , a mounting flange 12 and a connecting part 13 . Its mounting flange 12 is provided with a first oblong hole 121 and a second oblong hole 122 for connecting and assembling with the vehicle body. The first oblong hole 121 realizes assembly and positioning in the Y direction, while the X direction is adjustable; the second oblong hole 122 realizes X-direction assembly positioning, while Y-direction is adjustable, so that through the joint action of the first oblong hole 121 and the second oblong hole 122, the problem of difficult assembly caused by poor assembly precision control can be avoided. Its connection part 13 is vulcanized into one with the rubber main spring, and is provided with stud 131, and it has external thread, can be used for assembling and connecting with the suspension cushion assembly assembly hole 22 in the U-shaped groove 26.

As shown in Figure 3, the engine side suspension bracket 2 is provided with an engine mounting hole 21 connected with the engine, and a suspension cushion assembly assembly hole 22 assembled with a stud 131 in the suspension cushion assembly 1 for anti-torsion In the connecting rod assembly 3 , the large-end bushing 33 is assembled and connected to the first torsion-resistant connecting rod assembly assembly hole 23 , the second torsion-resistant connecting rod assembly assembly hole 24 , and the drain hole 25 . Wherein, the assembling hole 24 of the second torsion-resistant connecting rod assembly is a through hole provided with an internal thread. During the assembly process, the bolt 5 passes through the assembling hole 23 of the first torsion-resistant connecting rod assembly and is screwed into the internally threaded assembling hole 24. Nuts need to be added to save space and facilitate installation.

As shown in Figure 4, the torsion link assembly 3 is composed of a torsion link bracket 31, a large end bush 33 and a small end bush 32, and the large end bush 33 and the small end bush 32 pass through the torsion link The bracket 31 is connected. The big end bushing 33 is provided with a first rubber pad 331 and a first inner frame 332 , and the first inner frame 332 is provided with a first installation hole 333 . The big-end bushing 33 is placed in the U-shaped groove 26 , and the big-end bushing 33 is connected with the engine side suspension bracket 2 through the first installation hole 333 . Preferably, the height of the first inner frame 332 is higher than the peripheral edge of the big end bushing 33 and the torsion link bracket 31 to ensure the axial displacement of the first rubber cushion 331 so as to avoid Interference with engine side mount bracket 2 due to excessive steering displacement due to high engine torque. The small end bushing 32 is provided with a second rubber cushion 321 and a second inner frame 322, and the second inner frame 322 is provided with a second mounting hole 323, and the small end bushing 32 is connected to the vehicle body through the second mounting hole 323 . Based on the same principle, preferably, the height of the second inner frame 322 is higher than the peripheral edge of the small end bushing 32 and the torsion link bracket 31, so as to ensure the axial displacement of the second rubber cushion 321, thereby avoiding the During the movement, due to the large torque of the engine, the steering displacement is too large, resulting in interference with the car body.

Compared with the prior art, the present invention proposes an engine right mount assembly composed of a liquid resistance mount, a torsion-resistant connecting rod mount and a mount bracket, which can not only exert the low frequency, high stiffness and large damping of a general liquid resistance mount The characteristics of high frequency, small stiffness and small damping achieve good NVH performance, and the X-direction limit function can also be realized through the additional torsion-resistant connecting rod structure, which makes the liquid resistance mount compact in structure and occupies less space. At the same time, the anti-torsion link structure can also limit the torsional displacement generated when the powertrain outputs high torque, thereby avoiding interference or collision between the powertrain and the environmental parts during the movement of the vehicle. In addition, different vehicle NVH performance requirements can be achieved by separately adjusting and controlling the stiffness of the large and small end bushings of the torsion-resistant link structure. Therefore, this kind of engine right suspension assembly can also be used as a suspension cushion assembly for vehicles on the same platform. Maximize the versatility, thereby saving development costs.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (7)

1. An engine right mount assembly with a torsion-resistant connecting rod, characterized in that it includes a suspension cushion assembly (1), an engine side mount bracket (2) and a torsion-resistant connecting rod assembly (3) , the suspension cushion assembly (1) is assembled under the engine side suspension bracket (2), and the torsion-resistant link assembly (3) is assembled above the engine side suspension bracket (2). 2. The engine right suspension assembly with torsion connecting rod according to claim 1, characterized in that, the suspension cushion assembly (1) comprises a bottom mounting flange (12), a middle The rubber main spring, the liquid resistance suspension (11) and the connecting part (13) on the top; the liquid resistance suspension (11) is located at the outer ring of the rubber main spring. 3. The engine right suspension assembly with a torsion-resistant connecting rod according to claim 2, characterized in that, the mounting flange (12) comprises three edges and is distributed along the circumference, and each mounting flange There are oblong mounting holes on the edge (12) for connecting with the vehicle body; the first oblong holes (121) on the two mounting flanges are set to be adjustable in the X direction and positioned in the Y direction of the vehicle, and the other mounting flange The second oblong hole (122) on the top is set to be adjustable in the Y direction and positioned in the X direction of the whole vehicle. 4. The engine right mount assembly with torsion-resistant connecting rod according to claim 2, characterized in that, the connecting part (13) is vulcanized integrally with the rubber main spring, and the top is provided with a mount for mounting on the engine side. The bracket (2) is fitted with threaded studs (131) attached. 5. The engine right suspension assembly with torsion connecting rod according to claim 1, characterized in that, the engine side suspension bracket (2) comprises a base, and the upper end surface on one side of the base is There is an engine mounting hole (21) for connecting with the engine, and the other side of the base is recessed to form a U-shaped groove (26) for accommodating the torsion-resistant connecting rod assembly (3), and the U-shaped groove ( 26) There are mounting holes (22) for the suspension cushion assembly on the bottom for assembling with the suspension cushion assembly (1), and the bases on both sides above the U-shaped groove (26) are respectively provided with connection An ear, the connecting ear is provided with a first torsion-resistant link assembly assembly hole (23) and a second torsion-resistant link assembly assembly hole (24) for assembly with the torsion link assembly (3). 6. The engine right mount assembly with a torsion-resistant connecting rod according to claim 5, characterized in that a drain hole (25) is opened at the bottom of the U-shaped groove (26). 7. The engine right mount assembly with a torsion-resistant connecting rod according to claim 1, characterized in that, the torsion-resistant connecting rod assembly (3) comprises a torsion-resistant connecting rod bracket (31), respectively The big-end bushing (33) and the small-end bushing (32) arranged at both ends of the torsion-proof link bracket (31), the inner ring of the big-end bushing (33) is provided with a first rubber pad (331) and The first inner skeleton (332), the first installation hole (333) is opened on the first inner skeleton (332), and the inner ring of the small end bush (32) is provided with a second rubber cushion (321) and A second inner frame (322), and a second mounting hole (323) is opened on the second inner frame (322).