CN209305653U - A kind of subframe - Google Patents

Abstract

The utility model discloses a sub-frame, which comprises a fixed piece and a lower extension part; The bottom of the sheet is provided with oppositely folded flanging; the flanging is fixed with the bottom of the mounting part of the frame through screw fittings; the outer surface of the fixed sheet is provided with a spring support connected with the shock-absorbing spring; The space is connected by two extensions arranged in parallel; the height of the two extensions is lower than that of the fixed plate; the power drive system is installed on the two extensions. The utility model has an ingenious structure. The design of the lower extension can reduce the installation height of the power drive system, lower the center of gravity of the chassis, and reduce the space occupied by the power drive system on the chassis. At the same time, the lower extension also increases the space for placing the power drive system. installation space.

Description

a sub-frame

technical field

The utility model relates to an auxiliary frame.

Background technique

As a new energy vehicle, electric vehicles have the advantages of energy saving and environmental protection, especially pure electric vehicles are becoming more and more research hotspots in the automotive field. At present, the power drive system of the existing front-wheel-drive pure electric vehicle is all arranged on the chassis, specifically on the sub-frame, which has the functions of placing the power drive system and connecting the front suspension. The structure of the subframe is the same as that of a gasoline vehicle, and there is no special structure, which makes the chassis space occupied after the power drive system is placed, and the center of gravity is relatively high. Therefore, it is necessary to design a subframe that can reduce space occupation and lower the center of gravity.

Utility model content

The purpose of the utility model is to provide a sub-frame capable of reducing space occupation and lowering the center of gravity.

The technical solution to achieve the purpose of the utility model is: a sub-frame, including a fixed piece and a lower extension; the fixed piece is provided with two, and is respectively fixed on both sides of the frame installation part by a screw; The bottoms of the two fixed pieces in the lower extension are provided with oppositely folded flanges; the flanges are fixed with the bottom of the mounting part of the vehicle frame through screw fittings; The spring support connected by the shock spring; the two fixed pieces are connected by two downward extensions arranged in parallel; the height of the two downward extensions is lower than the height of the fixed piece; the upper extension of the two downward extensions Used to install power drive system.

The descending part includes a mounting crossbeam and a connecting arm; the connecting arm is respectively provided with one at both ends of the mounting crossbeam, and respectively connects the flanges of the two fixing pieces.

Both ends of the mounting beam of the descending portion are provided with first connecting blocks connected with the front suspension lower swing arm assembly.

The descending part also includes a reinforcement piece; the reinforcement piece is welded and fixed on the installation beam and the connecting arm.

A second connection block connected with the front suspension lower swing arm assembly is arranged on the outer surface of the fixed piece.

A third connection block connected with the front suspension gas spring is arranged on the outer surface of the fixed piece.

It also includes a reinforcing seat; there are two reinforcing seats, which are respectively fixed on the tops of the inner surfaces of the two fixing pieces.

The cross-section of the reinforcing seat is L-shaped, including a vertical part and a transverse part; the vertical part of the reinforcing seat is fixed to the inner surface of the fixed piece; the transverse part of the reinforcing seat is connected to the frame mounting part through a screw fixed at the top.

The vertical part of the reinforcing seat is fixed with a support piece fixedly connected with the transverse part.

Two reinforcing ribs arranged in a figure-eight arrangement are arranged on the top surface of the spring support of the fixed piece.

Adopting the above technical scheme, the utility model has the following beneficial effects: (1) The utility model has an ingenious structure, and the design of the lower extension can reduce the installation height of the power drive system, lower the center of gravity of the chassis, and reduce the weight of the power drive system on the chassis. Occupies space, and at the same time, the lower extension part also increases the installation space for placing the power drive system. The applicable power drive system has a variety of volume specifications, and the fixed piece is installed stably, and is fixed on the side wall of the frame installation part by screws. As well as the bottom, the connection is firm and the impact resistance is strong.

(2) The descending part of the utility model includes a mounting beam and a connecting arm. The connecting arm is respectively provided with one at both ends of the mounting beam, and respectively connects the flanging of the two fixing pieces, so that the center of gravity can be lowered and the installation space can be increased.

(3) The descending part of the utility model also includes a reinforcement sheet, which improves the connection strength between the installation beam and the connecting arm, and has better reliability.

(4) The utility model also includes a reinforcing seat to improve the firmness of the installation, and the fixing piece and the top of the mounting part of the vehicle frame are fixed through the reinforcing seat, and the fixing effect is better.

(5) The vertical part of the reinforcement seat of the present invention is fixed with a support piece fixedly connected with the transverse part, which improves the strength of the reinforcement seat itself and improves the firmness of the installation.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

Fig. 1 is the structural representation of the utility model.

The labels in the accompanying drawings are:

Fixed piece 1, flanging 1-1, spring support 1-2, second connecting block 1-3, third connecting block 1-4, lower extension part 2, installation beam 2-1, first connecting block 2- 1-1, connecting arm 2-2, reinforcement piece 2-3, reinforcement seat 3, support piece 3-1.

Detailed ways

(Example 1)

Referring to FIG. 1 , the subframe of this embodiment includes a fixing piece 1 , a descending portion 2 and a reinforcing seat 3 . There are two fixing pieces 1, and they are respectively fixed on both sides of the vehicle frame installation site by screw fittings. The bottoms of the two fixing pieces 1 on the downward extension 2 are provided with oppositely folded flanges 1-1. The flanging 1-1 is fixed with the bottom of the vehicle frame installation site by screw fittings. The outer surface of the fixed piece 1 is provided with a spring support 1-2 connected with the shock absorbing spring. The two fixed pieces 1 are connected by two downward extensions 2 arranged in parallel. The height of the two descending parts 2 is lower than that of the fixing piece 1 . The two lower extensions 2 are used to install the power drive system.

The descending part 2 includes a mounting beam 2-1 and a connecting arm 2-2. The connecting arms 3-2 are respectively provided with one at the two ends of the mounting beam 3-1, and are respectively connected to the flanges 1-1 of the two fixing pieces 1.

Both ends of the installation crossbeam 2-1 of the down extension part 2 are provided with a first connection block 2-1-1 connected with the front suspension lower swing arm assembly.

The descending part 2 also includes a reinforcing piece 2-3. The reinforcing sheet 2-3 is welded and fixed on the installation beam 2-1 and the connecting arm 2-2.

A second connection block 1-3 connected to the front suspension lower swing arm assembly is provided on the outer surface of the fixed piece 1 . Preferably, four second connecting blocks 1-3 are provided, and every two second connecting blocks 1-3 form a group, and each second connecting block 1-3 is provided with a screw hole.

A third connection block 1-4 connected with the front suspension gas spring is arranged on the outer surface of the fixed piece 1 . The third connection block 1-4 is rotatably connected with the front suspension gas spring through a pin shaft.

There are two reinforcing seats 3, and they are respectively fixed on the tops of the inner sides of the two fixing pieces 1.

The section of the reinforcement seat 3 is L-shaped, including a vertical part and a transverse part. The vertical portion of the reinforcement seat 3 is fixed to the inner surface of the fixed piece 1 . The transverse portion of the reinforcement seat 3 is fixed to the top of the vehicle frame installation site by screw fittings.

A support piece 3-1 fixedly connected with the transverse part is fixed on the vertical part of the reinforcement base 3 .

The top surface of the spring support 1-2 of the fixed piece 1 is provided with two reinforcing ribs in a figure-eight arrangement.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. It should be understood that the above descriptions are only specific embodiments of the present utility model and are not intended to limit the present invention. For the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (10)

1. A sub-frame, characterized in that: it includes a fixed piece (1) and a lower extension part (2); the fixed piece (1) is provided with two, and is fixed on the frame installation part by screw fittings On both sides of the lower extension part (2) and the bottom of the two fixed pieces (1) are provided with oppositely folded flanges (1-1); the flanges (1-1) are screwed together The parts are fixed with the bottom of the frame installation part; the outer surface of the fixed piece (1) is provided with a spring support (1-2) connected with the shock absorber spring; the two fixed pieces (1) are connected by parallel The two lower extensions (2) are connected; the height of the two lower extensions (2) is lower than the height of the fixed piece (1); the two lower extensions (2) are used to install the power drive system . 2. A subframe according to claim 1, characterized in that: the descending part (2) includes a mounting beam (2-1) and a connecting arm (2-2); the connecting arm (2 -2) One flange (1-1) is respectively provided at both ends of the installation beam (2-1), and is respectively connected to the two fixing pieces (1). 3. A sub-frame according to claim 2, characterized in that: both ends of the mounting crossbeam (2-1) of the descending part (2) are provided with the front suspension lower swing arm assembly. First connection block (2-1-1). 4. A sub-frame according to claim 2, characterized in that: the descending part (2) also includes a reinforcement piece (2-3); the reinforcement piece (2-3) is welded and fixed on the installation On the beam (2-1) and the connecting arm (2-2). 5. A sub-frame according to claim 1, characterized in that: the outer surface of the fixed piece (1) is provided with a second connecting block (1-3) connected to the front suspension lower swing arm assembly . 6. The auxiliary frame according to claim 1, characterized in that: a third connection block (1-4) connected to the front suspension gas spring is provided on the outer surface of the fixed piece (1). 7. A subframe according to claim 1, characterized in that: it also includes a reinforcement seat (3); there are two reinforcement seats (3), and they are respectively fixed on two fixing pieces (1) on top of the inner side. 8. A sub-frame according to claim 7, characterized in that: the section of the reinforcing seat (3) is L-shaped, including a vertical part and a transverse part; the vertical part of the reinforcing seat (3) The part is fixed with the inner surface of the fixed piece (1); the transverse part of the reinforcement seat (3) is fixed with the top of the frame installation part by a threaded piece. 9. The sub-frame according to claim 8, characterized in that: the vertical part of the reinforcing seat (3) is fixed with a support piece (3-1) fixedly connected with the transverse part. 10. The sub-frame according to claim 1, characterized in that two reinforcing ribs arranged in a figure-eight shape are arranged on the top surface of the spring support (1-2) of the fixing piece (1).