An automotive mounting plastic bracket and its assembly structure with a rubber component

Abstract

The present invention discloses an automotive mounting plastic bracket, which includes an injection-molded plastic bracket body. The plastic bracket body is in the shape of an arched bridge. A rubber main spring mounting hole that penetrates through from front to back is provided in the middle of the plastic bracket body. A number of inwardly protruding buckles are evenly distributed on the front end face and the rear end face of the rubber main spring mounting hole, and the buckles on the front end face of the rubber main spring mounting hole are arranged in a staggered manner with the buckles on the rear end face of the rubber main spring mounting hole. Two limit block mounting holes are provided on the upper surface of the plastic bracket body. Metal inserts are pre-embedded in the front and rear parts of the bottom ends on both sides of the plastic bracket body. The present invention also discloses an assembly structure of the automotive mounting plastic bracket and a rubber part. The plastic bracket is used to achieve lightweight, and a special buckle design is adopted to ensure the pressing force between the rubber main spring and the plastic bracket. The rubber limit block is integrated onto the plastic bracket, thereby reducing costs.

Description

Technical Field

[0001] The present invention relates to an automotive suspension plastic bracket and an assembly structure thereof with a rubber component. Background Art

[0002] A powertrain mount (hereinafter referred to as a mount) is a key component that connects a powertrain (an engine and a transmission, or an electric drive system) to a vehicle frame or body, and functions to support and position the powertrain and isolate vibration transmission. The powertrain mount bracket should have sufficient strength to support the powertrain, especially to withstand impacts under extreme conditions such as vehicle collisions, and also have strong dynamic stiffness to ensure the NVH characteristics of the mount. At the same time, it needs to be resistant to high and low temperatures and corrosion. Therefore, the mount bracket is generally made of metal materials such as sheet metal, cast steel, cast iron, and cast aluminum.

[0003] Please refer to Figure 1 and Figure 2 , in the powertrain mount of the prior art, a bracket 1' is connected to the powertrain mount by bolts, and a bracket 2' is connected to the vehicle frame by bolts. A rubber main spring core shaft 31', an outer sleeve 32' and rubber are vulcanized together to form a rubber main spring, and the rubber main spring is press-fitted into the bracket 2' by interference fit. A rubber stopper 4' is sleeved on the core shaft 31' of the rubber main spring 3'. The core shaft 31' of the rubber main spring 3' is connected to the bracket 1' by bolts. In the prior art, both the bracket 1' and the bracket 2' are made of metal materials (the density of steel is 7.85 g / cm 3 , the density of aluminum is 2.7 g / cm 3 ), which cannot meet the lightweight requirement. At the same time, due to the need for anti-corrosion treatment, it brings pressure to the environment and cost. In recent years, with the increasingly stringent requirements for energy conservation and emission reduction, high-performance plastics can well achieve lightweight and are increasingly widely used in the automotive field, especially in the field of new energy vehicles. However, if the bracket 2' is made of plastic material, when the rubber main spring is press-fitted into the plastic bracket 2' by interference fit, since the mechanical properties of the plastic are much lower than those of the metal, the press force of the rubber main spring cannot meet the requirements. The rubber stopper 4' is sleeved on the core shaft 31' of the rubber main spring 3'. Since it is a soft pure rubber body, it is very difficult to ensure the assembly accuracy, and it is easy to fall off during transportation after assembly, resulting in abnormal noise. Summary of the Invention

[0004] The object of the present invention is to overcome the defects of the prior art and provide an automotive suspension plastic bracket and an assembly structure thereof with a rubber component, which uses a plastic bracket to achieve lightweight, ensures the press force between the rubber main spring and the plastic bracket through a special buckle design, and integrates the rubber stopper onto the plastic bracket to reduce costs.

[0005] One technical solution to achieve the above object is: an automotive suspension plastic bracket, including a plastic bracket body formed by injection molding, and the plastic bracket body is in an arched bridge shape;

[0006] A rubber main spring mounting hole is provided in the middle of the plastic bracket body, and a plurality of buckles protruding inward are evenly distributed on the front and rear surfaces of the rubber main spring mounting hole, and the buckles on the front surface of the rubber main spring mounting hole are staggered with the buckles on the rear surface of the rubber main spring mounting hole;

[0007] The upper surface of the plastic bracket body is provided with two limit block mounting holes;

[0008] Metal inserts are pre-buried in the front and rear parts of the bottom ends of both sides of the plastic bracket body.

[0009] The above-mentioned automobile suspension plastic bracket, wherein a plurality of weight-reducing holes are provided on the plastic bracket body.

[0010] In the above-mentioned automobile suspension plastic bracket, the number of buckles on the front end surface and the rear end surface of the rubber main spring mounting hole is four respectively.

[0011] In the above-mentioned automobile suspension plastic bracket, the draft angle of the buckle on the front end surface of the rubber main spring mounting hole is opposite to the draft angle of the buckle on the rear end surface of the rubber main spring mounting hole.

[0012] In the above-mentioned automobile suspension plastic bracket, the buckle and the plastic bracket body are integrally formed by injection molding.

[0013] The present invention also provides an assembly structure of a car suspension plastic bracket and a rubber member, wherein the car suspension plastic bracket adopts the above-mentioned car suspension plastic bracket; the rubber member is a rubber main spring, wherein:

[0014] The rubber main spring is formed by vulcanizing a rubber main spring core shaft and a sleeve together; the sleeve is formed by plastic injection molding, the rubber main spring is interference fitted in the rubber main spring mounting hole, and the buckles on the front end face and the rear end face of the rubber main spring mounting hole contact the front end face and the rear end face of the rubber main spring one by one.

[0015] An assembly structure of a car suspension plastic bracket and a rubber part, wherein the car suspension plastic bracket adopts the above-mentioned car suspension plastic bracket; the rubber part is a rubber limit block, wherein:

[0016] The rubber limit block is in an inverted U-shape, and two mounting legs are vertically arranged on the lower surface of the top plate of the rubber limit block, and the bottom end of each mounting leg is a semicircular clamping platform; a plurality of reinforcing ribs are respectively arranged on the outer wall surfaces of the two side walls of the rubber limit block; the semicircular clamping platforms of the two mounting legs are fixed in the two limit block mounting holes one by one, and the two side walls of the rubber limit block are located in the front and rear sides of the plastic bracket body one by one.

[0017] The above-mentioned assembly structure of an automotive mount plastic bracket and a rubber component, wherein two grooves are provided on the top plate of the rubber limit block, and the two mounting legs are correspondingly arranged on the lower surface of the bottoms of the two grooves.

[0018] Adopting the technical solution of the automotive mount plastic bracket and its assembly structure with a rubber component of the present invention, using a plastic bracket can achieve lightweight while meeting performance requirements, and no anti-corrosion treatment is required. The plastic bracket and the rubber main spring are connected by a buckle on the plastic bracket body to solve the problem of insufficient pressing force of the rubber main spring. The rubber limit block is integrated into the plastic bracket to improve the assembly accuracy, solve problems such as easy displacement or even detachment during transportation and use, resulting in abnormal noises, etc., and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a powertrain mount in the prior art;

[0020] Figure 2 is an exploded structural diagram of a powertrain mount in the prior art;

[0021] Figure 3 is a three-dimensional structural diagram of an automotive mount plastic bracket of the present invention;

[0022] Figure 4 is Figure 3 a partial enlarged view of part X in

[0023] Figure 5 is a top view of an automotive mount plastic bracket of the present invention;

[0024] Figure 6 is an installation schematic diagram of the rubber limit block;

[0025] Figure 7 is Figure 6 a sectional view taken along line B-B of

[0026] Figure 8 is an installation schematic diagram of the rubber main spring and the plastic bracket;

[0027] Figure 9 is Figure 8 a sectional view taken along line A-A of

[0028] Figure 10 is Figure 9 a partial enlarged view of part Y in

[0029] Figure 11 is Figure 9 a partial enlarged view of part Z in

[0030] Figure 12Schematic structural diagram of a powertrain mount using the plastic bracket of the present invention;

[0031] Figure 13 Exploded structural diagram of a powertrain mount using the plastic bracket of the present invention. Specific embodiments

[0032] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present invention, the following will explain its specific embodiments in detail with reference to the accompanying drawings:

[0033] Please refer to Figure 3 、 Figure 4 and Figure 5 For an embodiment of the present invention, an automotive mount plastic bracket 2 includes a plastic bracket body 20 formed by injection molding, and the plastic bracket body 20 is in the shape of an arched bridge.

[0034] A rubber main spring mounting hole 24 penetrating through the front and back is provided in the middle of the plastic bracket body 20. Four inwardly protruding buckles 22 are evenly distributed on the front end face and the back end face of the rubber main spring mounting hole 24, and the four buckles 22 on the front end face of the rubber main spring mounting hole 24 are arranged in a staggered manner with the four buckles 22 on the back end face of the rubber main spring mounting hole 24; two limit block mounting holes 23 are provided on the upper surface of the plastic bracket body 20; metal inserts 21 are pre-embedded in the front and back parts at the bottom on both sides of the plastic bracket body 20. A plurality of weight-reducing holes 25 are provided in the plastic bracket body 21 to further reduce its weight and achieve lightweight.

[0035] The draft angles of the buckles 22 on the front end face of the rubber main spring mounting hole 24 are opposite to the draft angles of the buckles on the back end face of the rubber main spring mounting hole. In this way, it is convenient for demolding and can ensure the interference fit dimension. The buckles 22 and the plastic bracket body 20 are integrally formed by injection molding, without generating additional processes and costs.

[0036] The automotive mount plastic bracket 2 of the present invention is formed by injection molding using a high-performance plastic material. Metal inserts 21 are pre-embedded during the injection molding of the plastic bracket 2, and the metal inserts 21 are connected to the vehicle frame by bolts.

[0037] Please refer to Figures 6 to 11 The present invention also provides an assembly structure of an automotive mount plastic bracket and a rubber part. The automotive mount plastic bracket adopts the structure of the automotive mount plastic bracket 2 in the embodiment; the rubber part is a rubber limit block 4 and / or a rubber main spring 3.

[0038] Please refer to Figure 6 and Figure 7, the structure of the rubber limit block 4 is designed according to the shape of the plastic bracket 2. The rubber limit block 4 is in an inverted U shape. On the lower surface of the top plate of the rubber limit block 4, two mounting legs 41 are vertically arranged, and the bottom end of each mounting leg 41 is a semi-circular clamping platform; specifically, two grooves 40 are arranged on the top plate of the rubber limit block 4, and the two mounting legs 41 are correspondingly arranged on the lower surface of the bottom of the two grooves 40. On the outer wall surfaces of the two side walls of the rubber limit block 4, a number of reinforcing ribs 42 are respectively arranged, which can improve the strength of the rubber limit block 4; through the extrusion deformation of the rubber, the semi-circular clamping platforms of the two mounting legs 41 are correspondingly fixed in the two limit block mounting holes 23 of the plastic bracket 2, effectively avoiding easy detachment during transportation and improving the installation accuracy and firmness of the rubber limit block 4. The rubber limit block 4 has the characteristics of simple structure, light weight, high installation accuracy, convenient replacement and high service life.

[0039] Please refer to Figure 8 , Figure 9 , Figure 10 and Figure 11 , the rubber main spring 3 is formed by vulcanizing the rubber main spring core shaft 31 and the outer sleeve 32 together; the outer sleeve 32 is formed by plastic injection molding. The rubber main spring 3 is press-fitted into the rubber main spring mounting hole 24 with an interference fit, and the buckles 22 on the front end face and the rear end face of the rubber main spring mounting hole 24 are in contact with the front and rear end faces of the rubber main spring 3 correspondingly. In this way, during the use of the mount, when the rubber main spring core shaft 31 is subjected to an axial force, through the interference conforming assembly and the limiting and blocking action of the buckles 22 on both sides of the plastic bracket 2, the pressing force performance of the rubber main spring 3 is improved, and it is avoided that the outer sleeve 32 of the rubber main spring loosens or falls off in the plastic bracket 2 due to the plastic creep generated during long-term use of the plastic.

[0040] Please refer to Figure 12 and Figure 13 , for the powertrain mount using the automotive mount plastic bracket of the present invention and its assembly structure with rubber parts, the rubber main spring 3 is press-fitted into the rubber main spring mounting hole 24 of the plastic bracket 2 with an interference fit, and the semi-circular clamping platforms of the two mounting legs 41 of the rubber limit block 4 are correspondingly fixed in the two limit block mounting holes 23 of the plastic bracket 2. The bracket 1 is connected to the powertrain mount by bolts. During the collision caused by the relative movement between the bracket 1 and the plastic bracket 2, the reinforcing ribs 42 on the rubber limit block 4 contact the bracket 1 earlier relative to the rubber limit block body, improving the product service life.

[0041] In summary, for the plastic bracket of the vehicle mount and its assembly structure with the rubber component of the present invention, the use of a plastic bracket can achieve lightweight while meeting performance requirements, and anti-corrosion treatment is not required. The plastic bracket and the rubber main spring are connected by a buckle on the plastic bracket body to solve the problem of insufficient pressing force of the rubber main spring. The rubber limit block is integrated into the plastic bracket to improve the assembly accuracy, solve problems such as easy displacement or even detachment during transportation and use, resulting in abnormal noises, etc., and reduce costs.

[0042] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as within the scope of the substantial spirit of the present invention, changes and modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. An automotive suspension plastic bracket, characterized in that, It includes an injection-molded plastic bracket body, and the plastic bracket body is in the shape of an arched bridge; A front-rear through rubber main spring mounting hole is provided in the middle of the plastic bracket body. A number of inwardly protruding buckles are evenly distributed on the front end face and the rear end face of the rubber main spring mounting hole, and the buckles on the front end face of the rubber main spring mounting hole are arranged in a staggered manner with the buckles on the rear end face of the rubber main spring mounting hole; Two limit block mounting holes are provided on the upper surface of the plastic bracket body; Metal inserts are respectively embedded in the front and rear parts of the bottom ends on both sides of the plastic bracket body; A plurality of weight reduction holes are provided in the plastic bracket body; The number of buckles on the front end face and the rear end face of the rubber main spring mounting hole is four respectively; The draft angles of the buckles on the front end face of the rubber main spring mounting hole and the draft angles of the buckles on the rear end face of the rubber main spring mounting hole are opposite; The buckles and the plastic bracket body are integrally formed by injection molding; The assembly structure of the automotive mount plastic bracket and the rubber part, the rubber part is a rubber main spring, and the rubber main spring is formed by vulcanizing a rubber main spring core shaft and an outer sleeve together; the outer sleeve is injection-molded with plastic, the rubber main spring is press-fitted in the rubber main spring mounting hole, and the buckles on the front end face and the rear end face of the rubber main spring mounting hole are in contact with the front and rear end faces of the rubber main spring in a one-to-one correspondence.

2. An assembly structure of an automotive mount plastic bracket and a rubber part, the automotive mount plastic bracket adopts the automotive mount plastic bracket as described in claim 1; the rubber part is a rubber limit block, and its characteristics are: The rubber limit block is in an inverted U shape. Two mounting legs are vertically provided on the lower surface of the top plate of the rubber limit block, and the bottom end of each mounting leg is a semi-circular clamping platform; a number of reinforcing ribs are respectively provided on the outer wall surfaces of the two side walls of the rubber limit block; the semi-circular clamping platforms of the two mounting legs are fixedly arranged in the two limit block mounting holes in a one-to-one correspondence, and the two side walls of the rubber limit block are located on the front and rear sides of the plastic bracket body in a one-to-one correspondence; Two grooves are provided on the top plate of the rubber limit block, and the two mounting legs are respectively arranged on the lower surface of the bottom of the two grooves in a one-to-one correspondence.

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