Power assembly suspension cushion pad and assembling method thereof

Abstract

The invention relates to the technical field of automobile connection power assemblies, in particular to a power assembly suspension cushion pad and an assembling method thereof. A first limiting face is arranged at the upper end of the front face of the cushion pad, the shape of the first limiting face is attached to the outer contour of the connecting position of the upper end of the suspension shell, a second limiting face is arranged at the lower end of the front face of the cushion pad, the shape of the second limiting face is attached to the outer contour of the connecting position of the lower end of the suspension shell, and a third limiting face is arranged on the back face of the cushion pad. The assembly method of the buffer cushion comprises the following steps: S1, sleeving the hollow part on the front surface of the buffer cushion on a support arm of the suspension bracket; s2, pushing to the position of a third limiting surface to be attached to the suspension bracket; and S3, a vibration reduction assembly is arranged on the inner side of the suspension shell, the suspension shell is pressed into the vibration reduction assembly, the lower end of the first limiting face is attached to the vibration reduction assembly, the upper end of the second limiting face is attached to the vibration reduction assembly, and compared with the prior art, the buffering cushion is firmly installed, has the buffering and vibration isolation effects, and is easy to assemble, low in cost and reliable in performance.

Description

Technical Field

[0001] The invention relates to the technical field of automobile connection powertrain, in particular to a powertrain suspension buffer pad and an assembly method thereof. Background Art

[0002] Usually, the powertrain suspension includes suspension brackets, buffer pads, suspension housings, and vibration reduction components. The suspension brackets are connected to the powertrain, and the suspension housings are connected to the vehicle frame. During driving, the powertrain has multiple degrees of freedom motion conditions. Under certain conditions with large displacements, the suspension brackets will hit the suspension housings, so buffer pads are needed between the suspension brackets and the suspension housings to isolate the impact. Buffer pads are usually made of rubber materials and play an important role in vibration isolation and noise reduction of the entire vehicle.

[0003] At present, the assembly method of the buffer pad on the automobile powertrain suspension mainly relies on the installation of the buckle itself. The buckle installation is not firm enough and is easy to fall off, which increases the collision and loss between the suspension bracket and the suspension shell. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the purpose of the present invention is to provide an automobile powertrain suspension buffer pad, hereinafter referred to as the buffer pad, the buffer pad is integrally formed, the middle of the front side of the buffer pad is hollowed out, the hollow shape is matched with the outer contour of the suspension bracket arm, an extension surface is provided outwardly along the hollow shape, a first limiting surface is provided at the upper end of the front side of the buffer pad, the shape of the first limiting surface is matched with the outer contour of the connection at the upper end of the suspension shell, a second limiting surface is provided at the lower end of the front side of the buffer pad, the shape of the second limiting surface is matched with the outer contour of the connection at the lower end of the suspension shell, a third limiting surface is provided at the back side of the buffer pad, the shape of the third limiting surface is matched with the outer contour of the connection at the suspension bracket, the extension surface protrudes outward, the upper end of the extension surface is connected to the lower end of the first limiting surface, the lower end of the extension surface is connected to the upper end of the first limiting surface, and a part of the bottom end of the buffer pad protrudes downward; The assembly method comprises the following steps: S1, inserting the hollow part of the front side of the buffer pad into the suspension bracket arm; S2, pushing it to the third limit surface position to fit with the suspension bracket to form an engine bracket and buffer pad subassembly; S3, a vibration reduction assembly is arranged on the inner side of the suspension shell, and the engine bracket and buffer pad subassembly are pressed into the vibration reduction assembly, so that the lower end of the first limit surface fits with the vibration reduction assembly, and the upper end of the second limit surface fits with the vibration reduction assembly to form a powertrain suspension assembly.

[0005] The left and right sides of the buffer pad are straight lines.

[0006] The lower end of the first limiting surface contour is bent outward to form an "L" shape.

[0007] The first limiting surface has a contour that is bent outward at the upper end and inclined inward at the lower end.

[0008] The third limiting surface has a vertical upper end, a concave middle end, and an outwardly inclined lower end.

[0009] The outer contour of the buffer pad is provided with a chamfer.

[0010] In step S3, a gap is left between the upper end of the first limiting surface and the suspension shell, and a gap is left between the lower end of the second limiting surface and the suspension shell.

[0011] Compared with the prior art, the buffer pad of the present invention is installed between the suspension bracket and the suspension housing without falling off. When the power assembly is displaced too much and hits the suspension housing, the buffer pad can provide a buffering and vibration isolation effect. The assembly is simple, the cost is low, and the performance is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a front view of the cushion of this embodiment; Figure 2 is a side view of the cushion of this embodiment; Figure 3 It is a side view of the engine connection bracket and the buffer pad assembly of this embodiment; Figure 4 is a cross-sectional view of the engine connection bracket and the buffer pad assembly of this embodiment; Figure 5 is a partial cross-sectional view of the powertrain suspension assembly of this embodiment; Figure 6 It is a side view of the powertrain suspension assembly of this embodiment; See also Figures 1 to 6 , 1. Buffer pad; 2. Suspension bracket; 3. Suspension bracket arm; 4. Suspension shell; 5. Vibration reduction assembly; 6. First limiting surface; 7. Second limiting surface; 8. Third limiting surface. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figures 1 to 6, a vehicle powertrain suspension buffer pad, the buffer pad 1 is integrally formed, the middle of the front side of the buffer pad 1 is hollowed out, the hollow shape is matched with the outer contour of the suspension bracket arm 3, and an extension surface is provided outwardly along the hollow shape, and a first limiting surface 6 is provided at the upper end of the front side of the buffer pad 1, and the shape of the first limiting surface 6 is matched with the outer contour of the upper end connection of the suspension shell 4, and a second limiting surface 7 is provided at the lower end of the front side of the buffer pad 1, and the shape of the second limiting surface 7 is matched with the outer contour of the lower end connection of the suspension shell 4, and a third limiting surface 8 is provided on the back side of the buffer pad 1, and the shape of the third limiting surface 8 is matched with the outer contour of the connection of the suspension bracket 2, and the extension surface protrudes outward, and the upper end of the extension surface is connected to the lower end of the first limiting surface 6, and the lower end of the extension surface is connected to the upper end of the first limiting surface 7, and a part of the bottom end of the buffer pad 1 protrudes downward; The assembly method comprises the following steps: S1, inserting the hollow portion of the front side of the buffer pad 1 into the suspension bracket arm 3; S2, pushing it to the position of the third limit surface 8 to fit with the suspension bracket 3, forming an engine bracket and buffer pad subassembly; S3, a vibration reduction assembly 5 is provided on the inner side of the suspension shell 4, and the engine bracket and buffer pad subassembly is pressed into the vibration reduction assembly 5, so that the lower end of the first limit surface 6 fits with the vibration reduction assembly 5, and the upper end 7 of the second limit surface fits with the vibration reduction assembly 5, so as to form a powertrain suspension assembly.

[0015] There is an interference fit of 0.5mm between the size of the buffer pad 1 and the connection between the suspension bracket 2 and the suspension bracket arm 3, which increases the rigidity and stability of the connection, improves the seismic resistance and deformation resistance of the assembly, reduces noise and vibration, and increases the service life of the product.

[0016] The left and right sides of the buffer pad 1 are straight, making the edges smoother and reducing friction and resistance during assembly.

[0017] The lower end of the first limiting surface 6 is bent outward to form an "L" shape.

[0018] The second limiting surface 7 has an outline with the upper end bent outward and the lower end inclined inward.

[0019] The third limiting surface 8 has a vertical upper end, a concave middle end, and an outwardly inclined lower end.

[0020] The outer contour of the buffer pad 1 is provided with chamfers to reduce collision and damage of parts during assembly.

[0021] In step S3, a gap is left between the upper end of the first limiting surface 6 and the suspension housing 4, and a gap is left between the lower end 7 of the second limiting surface and the suspension housing 4, so that there is room for assembly error and displacement of the suspension housing 4 and the vibration reduction assembly 5.

[0022] When the powertrain is in an upward jumping condition, the first limit surface 6 provides lateral buffering. When the powertrain is in a downward jumping condition, the upper end of the second limit surface 7 provides longitudinal buffering. When the powertrain moves laterally, the lower end of the second limit surface 7 provides lateral buffering. In general, the buffer pad can provide buffering and vibration isolation for the displacement of the powertrain caused by working conditions in different directions.

Claims

1. An automobile powertrain suspension cushion, hereinafter referred to as a cushion, characterized in that: The buffer pad (1) is integrally formed, the middle of the front side of the buffer pad (1) is hollowed out, the hollowed-out shape fits the outer contour of the suspension bracket arm (3), an extension surface is provided outwardly along the hollowed-out shape, a first limiting surface (6) is provided at the upper end of the front side of the buffer pad (1), the shape of the first limiting surface (6) fits the outer contour of the upper end connection of the suspension shell (4), a second limiting surface (7) is provided at the lower end of the front side of the buffer pad (1), the shape of the second limiting surface (7) fits the outer contour of the lower end connection of the suspension shell (4), a third limiting surface (8) is provided at the back side of the buffer pad (1), the shape of the third limiting surface (8) fits the outer contour of the connection of the suspension bracket (2), the extension surface bulges outwardly, and the extension surface extends outwardly. The upper end of the spreading surface is connected to the lower end of the first limiting surface (6), the lower end of the extending surface is connected to the upper end of the first limiting surface (7), and a portion of the bottom end of the buffer pad (1) is protruding downward. The assembly method comprises the following steps: S1, inserting the hollow portion of the front side of the buffer pad (1) into the suspension bracket arm (3); S2, pushing it to the position of the third limiting surface (8) and fitting it with the suspension bracket (3) to form an engine bracket and buffer pad subassembly; S3, a vibration reduction assembly (5) is provided on the inner side of the suspension shell (4), and the engine bracket and buffer pad subassembly is pressed into the vibration reduction assembly (5), so that the lower end of the first limiting surface (6) fits the vibration reduction assembly (5), and the upper end of the second limiting surface (7) fits the vibration reduction assembly (5), so as to form a powertrain suspension assembly.

2. The automotive powertrain suspension cushion according to claim 1, characterized in that: The left and right side surfaces of the buffer pad (1) are linear.

3. The automotive powertrain suspension cushion according to claim 1, characterized in that: The lower end of the contour of the first limiting surface (6) is bent outwards to form an "L" shape.

4. The automotive powertrain suspension buffer pad according to claim 1, characterized in that: The first limiting surface (7) has a profile with an upper end bent outward and a lower end inclined inward.

5. The automobile powertrain suspension buffer pad according to claim 1, characterized in that: The third limiting surface (8) has a contour with a vertical upper end, an inwardly concave middle end, and an outwardly inclined lower end.

6. The automotive powertrain suspension buffer pad according to claim 1, characterized in that: The outer contour of the buffer pad (1) is provided with a chamfer.

7. The automobile powertrain suspension buffer pad and the assembly method thereof according to claim 1, characterized in that: In step S3, a gap is left between the upper end of the first limiting surface (6) and the suspension housing (4), and a gap is left between the lower end (7) of the second limiting surface and the suspension housing (4).

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