CN209666759U - Lower swing arm hydraulic bushing and suspension assembly before suspension - Google Patents

Abstract

Lower swing arm hydraulic bushing before a kind of suspension, including support arm, outer tube, rubber spring and the inner tube radially set gradually from outside to inside, rubber spring is set between outer tube and inner tube and connect by outer tube with inner tube, cavity is equipped in rubber spring, limited block is equipped in cavity, limited block includes the outer collision block, collision block rubber and interior collision block radially set gradually from outside to inside, and collision block rubber is set between outer collision block and interior collision block.Lower swing arm hydraulic bushing solves the problems, such as to generate abnormal sound between limited block and outer tube and inner tube because of shock before the suspension, and structure is simple, optimizes the NVH performance of lower swing arm before suspension, improves the comfort in driving conditions.The invention also discloses a kind of suspension assemblies.

Description

Suspension front lower swing arm hydraulic bushing and suspension assembly

technical field

The utility model relates to the technical field of bushings, in particular to a hydraulic bushing and a suspension assembly of a front lower swing arm of a suspension.

Background technique

With the continuous improvement of people's living standards, car users have higher and higher requirements for car comfort. On the one hand, due to the limited damping provided by traditional rubber bushings, they often cannot quickly attenuate the body vibration caused by bumpy roads or rapid acceleration or deceleration, and the scope of use is becoming more and more limited; on the other hand, new hydraulic bushings It can provide advantages such as large damping in the case of low frequency and large amplitude. More and more automobiles use hydraulic bushings in the front lower arm. However, due to structural reasons, abnormal noise problems are very common in hydraulic bushings. The hydraulic bushing limit block structure design It is necessary to balance durability and abnormal noise.

In the existing technical solution, the material of the limit block of the hydraulic bushing is hard material, because the outer tube of the hydraulic bushing is also made of hard material, the collision between the limit block and the outer tube is easy to produce abnormal noise, which affects the quality of the whole vehicle. cause customer complaints.

Utility model content

The purpose of the utility model is to provide a suspension front lower swing arm hydraulic bushing and suspension assembly, which can eliminate the abnormal noise caused by the collision between the limit block and the outer tube and inner tube, has a simple structure, and optimizes the suspension The NVH (noise, vibration and harshness) performance of the front lower swing arm improves the comfort during driving.

The utility model provides a hydraulic bushing of the front lower swing arm of the suspension, which comprises an outer bracket, an outer tube, a rubber main spring and an inner tube which are sequentially arranged radially from outside to inside, and the rubber main spring is arranged on the outer tube. Between the inner tube and the outer tube and the inner tube, it is characterized in that a cavity is provided in the main rubber spring, and a limit block is arranged in the cavity, and the limit block It includes an outer bumper, a bumper rubber and an inner bumper arranged in sequence from outside to inside in the radial direction, and the bumper rubber is arranged between the outer bumper and the inner bumper.

Further, the inner and outer sides of the limiting block respectively abut against between the inner tube and the outer tube.

Further, the cavity is axially located in the middle of the rubber main spring.

Further, the outer bumper is composed of an outer bumper body and a plurality of rubber bumps, and the plurality of rubber bumps are arranged on a side surface of the outer bumper body close to the outer tube.

Further, the number of the plurality of rubber bumps is four, which are respectively arranged on the side of the outer bumper body close to the outer tube.

Further, the main rubber spring is vulcanized between the outer tube and the inner tube to connect the outer tube to the inner tube.

Further, a skeleton is provided inside the rubber main spring on a side close to the outer tube.

Further, the outer tube is connected to the outer bracket through an interference fit.

The utility model also provides a suspension assembly, including the above-mentioned hydraulic bushing of the front lower swing arm of the suspension.

The hydraulic bushing of the front lower swing arm of the suspension provided by the utility model, when the inner tube is displaced due to force, the inner tube collides with the limit block, and then drives the limit block to collide with the outer tube, through The impact block rubber of the limit block is set between the outer impact block and the inner impact block, which plays a buffering role, and then solves the problem of abnormal noise caused by impact between the limit block and the outer tube and inner tube. The structure is simple , optimize the NVH performance of the front lower swing arm of the suspension, and improve the comfort during driving.

Description of drawings

Fig. 1 is the top view schematic diagram after the hydraulic bushing of the front lower swing arm of the suspension is assembled in the utility model;

Fig. 2 is a schematic cross-sectional view of the A-A direction of Fig. 1;

Fig. 3 is the structural representation of stop block in the utility model;

Fig. 4 is a schematic cross-sectional view of the B-B direction of Fig. 3;

Fig. 5 is a schematic diagram of the structure of the outer collision block in the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in Figures 1 to 5, the utility model provides a hydraulic bushing of the front lower swing arm of the suspension, which includes an outer bracket 1, an outer tube 2, a rubber main spring 4 and an inner tube arranged in sequence from outside to inside in the radial direction 5. The rubber main spring 4 is arranged between the outer tube 2 and the inner tube 5 and connects the outer tube 2 and the inner tube 5. The rubber main spring 4 is provided with a cavity 40, and the cavity 40 is provided with a limit block 6 to limit The position block 6 includes an outer bumper 61 , a bumper rubber 62 and an inner bumper 63 arranged radially from outside to inside in sequence, and the bumper rubber 62 is arranged between the outer bumper 61 and the inner bumper 63 .

The bumper rubber 62 is vulcanized between the outer bumper 61 and the inner bumper 63 to connect the outer bumper 61 to the inner bumper 63 . By setting the bumper rubber 62 of the limiter 6 between the outer bumper 61 and the inner bumper 63, it plays a buffer role during the operation of the vehicle, thereby solving the problem of the relationship between the limiter 6 and the outer tube 2 and the inner tube 5. The problem of abnormal noise caused by impact between them is simple, and the NVH performance of the front lower swing arm of the suspension is optimized, which improves the comfort during driving.

Specifically, the inner and outer sides of the limiting block 6 abut against the inner tube 5 and the outer tube 2 respectively, and limit the rubber main spring 4 to prevent the rubber main spring 4 from being displaced and deformed due to impact. The cavity 40 provided with the limiting block 6 is axially located in the middle of the rubber main spring 4 , and when the limiting block 6 is installed, it is beneficial to balance the stress on the rubber main spring 4 .

Preferably, the outer bumper 61 is composed of an outer bumper body 611 and a plurality of rubber bumps 612 , and the plurality of rubber bumps 612 are arranged on a side surface of the outer bumper body 611 close to the outer tube 2 . When the vehicle is running, the rubber bump 612 can buffer the impact between the outer impact block 61 and the outer tube 2 , thereby eliminating the problem of abnormal noise caused by the impact. In this embodiment, the number of the plurality of rubber bumps 612 is four, but the present invention is not limited thereto. The four rubber bumps 612 are respectively arranged on one side of the outer bumper body 611 close to the outer tube 2 .

In this embodiment, the rubber main spring 4 is vulcanized between the outer tube 2 and the inner tube 5 to realize the connection between the outer tube 2 and the inner tube 5 . Preferably, the main rubber spring 4 is provided with a skeleton 3 on the side close to the outer tube 2, which increases the strength of the main rubber spring 4 and prevents the hydraulic bushing of the front lower arm of the suspension from deforming or even cracking and falling off.

Specifically, the outer tube 2 and the outer bracket 1 are connected through an interference fit, which can withstand the impact load of the vehicle during running, and has little weakening of the strength of the shaft.

Its bumper rubber 62 and rubber bump 612 adopt rubber material, because rubber has the characteristics of high elasticity and low rigidity, rubber can produce larger deformation under the action of less external force, and can accelerate again after external force disappears. The speed returns to the original shape, which plays the role of buffer and vibration reduction. When the inner tube 5 is displaced due to the force, a collision occurs between the inner tube 5 and the limiting block 6, which then drives the impact between the limiting block 6 and the outer tube 2. The hard connection between the space and the outer collision block 61 and the outer tube 2 is changed to a soft connection, which can play a buffer role twice, thereby solving the problem of abnormal noise caused by impact between the limit block and the outer tube 2 and inner tube 5 The structure is simple, the NVH performance of the front lower swing arm of the suspension is optimized, and the comfort during driving is improved.

The utility model also provides a suspension assembly, including the above-mentioned hydraulic bushing of the front lower swing arm of the suspension. The specific functions are as described above and will not be repeated here.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (9)

1. A suspension front lower swing arm hydraulic bushing, comprising an outer support (1), an outer tube (2), a rubber main spring (4) and an inner tube (5) arranged radially from outside to inside, the The rubber main spring (4) is arranged between the outer tube (2) and the inner tube (5) and connects the outer tube (2) with the inner tube (5), it is characterized in that the The rubber main spring (4) is provided with a cavity (40), the cavity (40) is provided with a limit block (6), and the limit block (6) includes radially arranged from outside to inside The outer bumper (61), the bumper rubber (62) and the inner bumper (63), the bumper rubber (62) is arranged between the outer bumper (61) and the inner bumper (63) between. 2. The hydraulic bushing of the suspension front lower swing arm according to claim 1, characterized in that, the inner and outer sides of the limit block (6) respectively abut against the inner tube (5) and the outer tube (2) between. 3. The hydraulic bushing of the suspension front lower swing arm according to claim 1, characterized in that, the cavity (40) is located in the middle of the rubber main spring (4) along the axial direction. 4. The suspension front lower swing arm hydraulic bushing according to any one of claims 1-3, characterized in that, the outer bumper (61) consists of an outer bumper body (611) and a plurality of rubber bumps ( 612), the plurality of rubber bumps (612) are arranged on the side surface of the outer bumper body (611) close to the outer tube (2). 5. The suspension front lower swing arm hydraulic bushing according to claim 4, characterized in that, the number of the plurality of rubber bumps (612) is four, which are respectively arranged on the outer bumper body (611) on the side close to the outer tube (2). 6. The hydraulic bushing of the front lower swing arm of the suspension according to claim 1, characterized in that, the rubber main spring (4) is set on the outer tube (2) and the inner tube (5) by vulcanization between the outer tube (2) and the inner tube (5). 7. The hydraulic bushing of the front lower swing arm of the suspension according to claim 1, characterized in that, a skeleton (3) is provided inside the rubber main spring (4) on a side close to the outer tube (2). 8. The hydraulic bushing of the front lower swing arm of the suspension according to claim 1, characterized in that, the outer tube (2) and the outer bracket (1) are connected by an interference fit. 9. A suspension assembly, characterized in that it comprises the hydraulic bushing of the front lower swing arm of the suspension according to any one of claims 1 to 8.