WO2022156506A1 - 一种挤压型材和铸造组合型电动车前副车架 - Google Patents

一种挤压型材和铸造组合型电动车前副车架 Download PDF

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WO2022156506A1
WO2022156506A1 PCT/CN2021/142917 CN2021142917W WO2022156506A1 WO 2022156506 A1 WO2022156506 A1 WO 2022156506A1 CN 2021142917 W CN2021142917 W CN 2021142917W WO 2022156506 A1 WO2022156506 A1 WO 2022156506A1
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electric vehicle
butterfly
bracket
extruded profile
longitudinal
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PCT/CN2021/142917
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English (en)
French (fr)
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周长孝
丁旷斌
魏文锋
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宁波信泰机械有限公司
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Publication of WO2022156506A1 publication Critical patent/WO2022156506A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members

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  • the invention belongs to the technical field of electric vehicle subframes, and relates to an extruded profile and casting combined type electric vehicle front subframe.
  • the technical problem to be solved by the present invention is to provide an extruded profile and casting combined electric vehicle front subframe, which can reduce the number of parts and welds, improve assembly accuracy, and solve the problem of The problems of insufficient energy absorption and low yield of cast subframe.
  • an extruded profile and casting combined electric vehicle front subframe which is characterized in that it includes:
  • the front cross member is located at the front of the front subframe of the electric vehicle
  • the bracket is located between the longitudinal beam and the front beam, and the bracket is connected with the front point of the vehicle body installation, and at the same time is connected with the front beam and the longitudinal beam;
  • the rear beam is located at the rear of the front subframe of the electric vehicle, and a butterfly beam is connected between the rear beam and the longitudinal beam;
  • the middle beam is located in the middle of the front subframe of the electric vehicle and is connected with the butterfly beam, and the butterfly beam is connected with the longitudinal beam, the middle beam and the rear beam to form a whole.
  • a rear suspension seat is also arranged between the middle beam and the rear beam, wherein the rear suspension seat is formed by extruding a hollow extruded profile. Assembled and used to install the powertrain mount.
  • the bracket is H-shaped, and a powertrain suspension installation point is installed on the bracket.
  • the longitudinal beam includes a left longitudinal beam and a right longitudinal beam, and the left longitudinal beam and the right longitudinal beam are located on the left and right sides of the front cross beam, respectively. side.
  • the bracket includes a left front bracket and a right front bracket, wherein the left front bracket is used to connect the front cross member and the left longitudinal beam, and the The right front bracket is used to connect the front cross member and the right side member.
  • the butterfly beam has a body installation center point, a stabilizer bar, a steering gear connection point, a front point and a rear point of the control arm.
  • the shaped beam includes a left butterfly beam and a right butterfly beam, the left butterfly beam is connected to the left longitudinal beam, the middle beam and the rear beam, and the right butterfly beam is connected to the right longitudinal beam, the middle beam and the rear beam.
  • the front beam, the longitudinal beam, the rear beam and the middle beam are extruded, and the bracket and the butterfly beam are die-casting. .
  • the present invention has the advantage of using the butterfly beam to install the front point of the vehicle body, the center point of the vehicle body installation, the stabilizer bar, the connection point of the steering gear, the front point and the rear point of the control arm on one structural member, reducing the number of parts.
  • the number of parts can improve the assembly accuracy, and the structural parts give full play to the advantages of high yield of extruded profiles, make full use of the fluidity of the casting process, form complex profiles, reduce the number of welds, and are less difficult than integral casting subframes. High pass rate and good energy absorption effect.
  • Figure 1 is a schematic diagram of the structure of the front subframe of the combined extruded profile and casting electric vehicle.
  • the front subframe of the combined extruded profile and cast electric vehicle mainly includes a front beam 100, a longitudinal beam 200, a bracket 300, a rear beam 400, a middle beam 500 and a butterfly beam 600.
  • the front beam 100, the longitudinal beam 200, the rear beam 400 and the middle beam 500 are extruded, and the bracket 300 and the butterfly beam 600 are die-casting.
  • the front cross member 100 is located at the front of the front subframe of the electric vehicle, and the longitudinal beam 200 is located on the left and right sides of the front cross member 100 .
  • the beams 202 are located on the left and right sides of the front cross member 100 respectively, and the bracket 300 is located between the longitudinal beam 200 and the front cross member 100.
  • the bracket 300 is H-shaped, which reduces the weight and ensures the rigidity in the Z direction.
  • a power is installed on the bracket 300.
  • the assembly is suspended at the installation point and connected by bolts.
  • the bracket 300 is connected to the front point of the vehicle body installation, and is also connected to the front cross member 100 and the longitudinal beam 200.
  • the bracket 300 includes a left front bracket 301 and a right front bracket 302, wherein the left front bracket 301 is used to connect the front cross member 100 and the left side member 201, and the right front bracket 302 is used to connect the front cross member 100 and the right side member 202, which can improve the overall lateral rigidity.
  • the rear beam 400 is located at the rear of the front subframe of the electric vehicle, and a butterfly beam 600 is connected between the rear beam 400 and the longitudinal beam 200; the middle beam 500 is located in the middle of the front subframe of the electric vehicle and is connected to the butterfly beam 600, A rear suspension seat 700 is also arranged between the middle beam 500 and the rear beam 400, wherein the rear suspension seat 700 is extruded from a hollow extruded profile and used to install the power assembly suspension, so that the weight reduction effect is good, and the rigidity is improved. Strong, the biggest innovation of this patent here is that the butterfly beam 600 is connected with the longitudinal beam 200, the middle beam 500 and the rear beam 400 to form a whole.
  • butterfly beam 600 includes left butterfly beam 601 and right butterfly beam 602, left butterfly beam 601 connects left longitudinal beam 201, middle beam 500 and rear beam 400, right butterfly beam 601
  • the shape beam 602 connects the right longitudinal beam 202, the middle beam 500 and the rear beam 400, that is to say, the middle beam 500 connects the left butterfly beam 601 and the right butterfly beam 602 to improve the lateral rigidity of the subframe, and at the same time, it is a rear suspension.
  • the seat 700 provides support.
  • the front sub-frame of the electric vehicle designed by the above structure will install the center point of the body, the stabilizer bar, the connection point of the steering gear, the front point and the rear point of the control arm, and connect them with the butterfly beam 600.

Abstract

一种挤压型材和铸造组合型电动车前副车架，包括前横梁（100）、纵梁（200）、支架（300）、后横梁（400）、中横梁（500）以及蝶形梁（600），后横梁（400）和纵梁（200）之间有蝶形梁（600），中横梁（500）在电动车前副车架中部并连接蝶形梁（600），蝶形梁（600）与纵梁（200）、中横梁（500）及后横梁（400）连接整体。

Description

一种挤压型材和铸造组合型电动车前副车架 技术领域
本发明属于电动车副车架技术领域，涉及一种挤压型材和铸造组合型电动车前副车架。
背景技术
随着环保法规越来越严格，电动车对于大航程的追求，汽车轻量化的要求越来越高；需要结合铝合金工艺，和电动车的整车布置对副车架结构进行全新的设计，以满足副车架性能要求，现有的挤压和铸造工艺组合型铝合金副车架方案和全挤压型材铝合金副车架方案，车身前安装中点，车身安装后点、稳定杆安装点、转向机安装点都是安装在不同的结构上，导致零件数量多，焊接变形大。现有的整体铸造副车架，碰撞吸能效果较差。
发明内容
本发明所要解决的技术问题，是针对现有技术的现状，而提供一种挤压型材和铸造组合型电动车前副车架，可以减少零件的数量和焊缝数量，提高装配精度，解决全铸造副车架吸能不足和成品率低的问题。
本发明解决上述技术问题所采用的技术方案为：一种挤压型材和铸造组合型电动车前副车架，其特征在于，包括：
前横梁，位于电动车前副车架的前部；
纵梁，位于前横梁的左右侧；
支架，位于纵梁和前横梁之间，所述的支架与车身安装前点相连接，同时又与前横梁和纵梁相连接；
后横梁，位于电动车前副车架的后部，在后横梁和纵梁之间连接有蝶形梁；
中横梁，位于电动车前副车架的中部并连接蝶形梁，所述的蝶形梁与纵梁、中横梁以及后横梁连接并组成一个整体。
在上述的一种挤压型材和铸造组合型电动车前副车架中，中横梁和后横梁之间还设置有后悬置座，其中，后悬置座为中空的挤压型材挤出而成并用于安装动力总成悬置。
在上述的一种挤压型材和铸造组合型电动车前副车架中，所述的支架呈H型状，在支架上安装有动力总成悬置安装点。
在上述的一种挤压型材和铸造组合型电动车前副车架中，所述的纵梁包括左纵梁和右纵梁，左纵梁和右纵梁分别位于前横梁的左侧和右侧。
在上述的一种挤压型材和铸造组合型电动车前副车架中，所述的支架包括左前支架和右前支架，其中，所述的左前支架用于连接前横梁和左纵梁，所述的右前支架用于连接前横梁和右纵梁。
在上述的一种挤压型材和铸造组合型电动车前副车架中，所述的蝶形梁上具有车身安装中点，稳定杆、转向机连接点、控制臂前点和后点，蝶形梁包括左蝶形梁和右蝶形梁，所述的左蝶形梁连接左纵梁、中横梁以及后横梁，所述的右蝶形梁连接右纵梁、中横梁以及后横梁。
在上述的一种挤压型材和铸造组合型电动车前副车架中，所述的前横梁、纵梁、后横梁以及中横梁为挤出成型，所述的支架和蝶形梁为压铸成型。
与现有技术相比，本发明的优点在于利用蝶形梁将车身安装前点，车身安装中点，稳定杆、转向机连接点、控制臂前点和后点安装在一个结构件上，减少零件数量，提高装配精度，并且本结构件充分发挥挤压型材成品率高的优点，充分利用铸造工艺的流动性，成型复杂型面，减少焊缝的数量，比整体铸造副车架难度低，合格率高，吸能效果好。
附图说明
图1是本挤压型材和铸造组合型电动车前副车架结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的描述中，需要理解的是，术语“中心”、“横向”、“纵向”、“前”、“后”、“左”、“右”、“上”、“下”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明保护范围的限制。
图中，前横梁100；纵梁200；左纵梁201；右纵梁202；支架300；左前支架301；右前支架302；后横梁400；中横梁500；蝶形梁600；左蝶形梁601；右蝶形梁602；后悬置座700。
如图1所示，本挤压型材和铸造组合型电动车前副车架，主要包括前横梁100、纵梁200、支架300、后横梁400、中横梁500以及蝶形梁600，这里为了实现轻量化，前横梁100、纵梁200、后横梁400以及中横梁500为挤出成型，支架300和蝶形梁600为压铸成型，充分发挥挤压型材成品率高的优点，充分利用铸造工艺的流动性，成型复杂型面，减少横梁、纵梁200、支架300、后横梁400、中横梁500与支架300和蝶形梁600之间连接焊缝的数量。
具体来说，前横梁100位于电动车前副车架的前部，纵梁200位于前横梁100的左右侧，纵梁200包括左纵梁201和右纵梁202，左纵梁201和右纵梁202分别位于前横梁100的左侧和右侧，支架300位于纵梁200和前横梁100之间，支架300呈H型状，这样减少重量又保证Z向刚度，在 支架300上安装有动力总成悬置安装点，并通过螺栓紧固连接，支架300与车身安装前点相连接，同时又与前横梁100和纵梁200相连接，作为进一步优化，支架300包括左前支架301和右前支架302，其中，左前支架301用于连接前横梁100和左纵梁201，右前支架302用于连接前横梁100和右纵梁202，这样可以整体提高侧向刚度。
后横梁400位于电动车前副车架的后部，在后横梁400和纵梁200之间连接有蝶形梁600；中横梁500位于电动车前副车架的中部并连接蝶形梁600，中横梁500和后横梁400之间还设置有后悬置座700，其中后悬置座700为中空的挤压型材挤出而成并用于安装动力总成悬置，这样减重效果好，刚度强，这里本专利最大的创新是蝶形梁600与纵梁200、中横梁500以及后横梁400连接并组成一个整体，作为进一步优化，蝶形梁600上具有车身安装中点，稳定杆、转向机连接点、控制臂前点和后点，蝶形梁600包括左蝶形梁601和右蝶形梁602，左蝶形梁601连接左纵梁201、中横梁500以及后横梁400，右蝶形梁602连接右纵梁202、中横梁500以及后横梁400，也就是说中横梁500连接了左蝶形梁601和右蝶形梁602，提高副车架的侧向刚度，同时为后悬置座700提供支撑，经以上结构设计的电动车前副车架将车身安装中点，稳定杆、转向机连接点、控制臂前点和后点的多个安装点，用蝶形梁600连接在一起，能够减少零件的数量，降低焊接变形，可以整体减重30％和轻量化要求，对于减少能源消耗，提高续航里程和较大帮助，合格率高，降低了铸造难度，能够满足模态、刚度要求、强度CAE要求。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神所定义的范围。

Claims (7)

  1. 一种挤压型材和铸造组合型电动车前副车架，其特征在于，包括：
    前横梁，位于电动车前副车架的前部；
    纵梁，位于前横梁的左右侧；
    支架，位于纵梁和前横梁之间，所述的支架与车身安装前点相连接，同时又与前横梁和纵梁相连接；
    后横梁，位于电动车前副车架的后部，在后横梁和纵梁之间连接有蝶形梁；
    中横梁，位于电动车前副车架的中部并连接蝶形梁，所述的蝶形梁与纵梁、中横梁以及后横梁连接并组成一个整体。
  2. 根据权利要求1所述的一种挤压型材和铸造组合型电动车前副车架，其特征在于，中横梁和后横梁之间还设置有后悬置座，其中，后悬置座为中空的挤压型材挤出而成并用于安装动力总成悬置。
  3. 根据权利要求1或2所述的一种挤压型材和铸造组合型电动车前副车架，其特征在于，所述的支架呈H型状，在支架上安装有动力总成悬置安装点。
  4. 根据权利要求3所述的一种挤压型材和铸造组合型电动车前副车架，其特征在于，所述的纵梁包括左纵梁和右纵梁，左纵梁和右纵梁分别位于前横梁的左侧和右侧。
  5. 根据权利要求4所述的一种挤压型材和铸造组合型电动车前副车架，其特征在于，所述的支架包括左前支架和右前支架，其中，所述的左前支架用于连接前横梁和左纵梁，所述的右前支架用于连接前横梁和右纵梁。
  6. 根据权利要求5所述的一种挤压型材和铸造组合型电动车前副车架，其特征在于，所述的蝶形梁上具有车身安装中点，稳定杆、转向机连接点、控制臂前点和后点，蝶形梁包括左蝶形梁和右蝶形梁，所述的左蝶形梁连 接左纵梁、中横梁以及后横梁，所述的右蝶形梁连接右纵梁、中横梁以及后横梁。
  7. 根据权利要求6所述的一种挤压型材和铸造组合型电动车前副车架，其特征在于，所述的前横梁、纵梁、后横梁以及中横梁为挤出成型，所述的支架和蝶形梁为压铸成型。
PCT/CN2021/142917 2021-01-21 2021-12-30 一种挤压型材和铸造组合型电动车前副车架 WO2022156506A1 (zh)

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