GB2526434A - Subframe for a vehicle, in particular a passenger vehicle - Google Patents
Subframe for a vehicle, in particular a passenger vehicle Download PDFInfo
- Publication number
- GB2526434A GB2526434A GB1507624.3A GB201507624A GB2526434A GB 2526434 A GB2526434 A GB 2526434A GB 201507624 A GB201507624 A GB 201507624A GB 2526434 A GB2526434 A GB 2526434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- subframe
- cross member
- side members
- vehicle
- lower side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
A subframe 10 for a vehicle and connectable to a body of the vehicle comprises two transversely spaced side members 12a, 12b and a first cross member 20 connected to side members 12a, 12b. Subframe 10 also comprises two transversely spaced lower side members 26a, 26b arranged vertically below first side members 12a, 12b, a rear cross member 30 longitudinally behind cross member 20 and at least indirectly connected to side members 12a, 12b, and a lower cross member 34 arranged vertically below cross members 20, 30 and connected to lower side members 26a, 26b. A receiving space 38 for an electric drive motor (40, Figure 2) of the vehicle is bound at least by cross members 20, 30, 34 and lower side members 26a, 26b. Preferably, the motor can be mounted on a mounting element 42 comprised in rear brackets 32a, 32b connected to side members 12a, 12b and lower side members 26a, 26b. At least one of rear cross member 30, lower cross member 34 and lower side members 26a, 26b may be tubular.
Description
Subframe for a Vehicle, in particular a Passenger Vehicle The invention relates to a subframe for a vehicle according to the preamble of patent claim 1.
Such a subframe for a vehicle, in particular a passenger vehicle, can be found in DE 10 2009 052 920 Al. The subframe is configured to be connected to a body of the vehicle and comprises two side members which are arranged at a distance from each other in the transverse direction of the vehicle. Moreover, the subframe comprises a cross member connected to the side members respectively.
Furthermore, US 2014/0145423 Al shows a subframe of a front or rear part of a motor vehicle, the subframe comprising two longitudinal members arranged in spaced-part relationship in a vehicle transverse direction. The subframe further comprises a cross member connecting the longitudinal members with one another. Moreover, the subframe comprises a reinforcement connected to the longitudinal members and the cross member for increasing a torsion resistance of the subframe. Additionally, the subframe comprises a charge module integrated in the reinforcement and configured to transmit energy in a contactless manner.
It is an object of the present invention to further develop a subframe of the aforementioned kind in such a way that the weight and the cost of the subframe can be kept particularly low, wherein a particularly high stiffness of the subframe can be realized.
This object is solved by a subframe having the features of patent claim 1. Advantageous embodiments with expedient developments of the invention are indicated in the other patent claims.
In order to further develop a subframe of the kind indicated in the preamble of patent claim 1 in such a way that the weight and the cost of the subframe can be kept particularly low, wherein a particularly high stiffness of the subframe can be realized, according to the present invention the subframe comprises two lower side members arranged at a distance from each other in the transverse direction of the vehicle, the lower side members being arranged lower than the first side members in the vertical direction of the vehicle. The subframe according to the present invention further comprises a rear cross member arranged behind the first cross member in the longitudinal direction of the vehicle, wherein the rear cross member is connected to the first side members at least indirectly.
Additionally, the subframe according to the present invention comprises a lower cross member arranged lower than the first and rear cross members in the vertical direction of the vehicle. The lower cross member is connected to the lower side members respectively. At least the first cross member, the rear cross member, the lower cross member and the lower side members bound a receiving space for at least one electric drive motor for driving the vehicle.
In other words, at least one electric drive motor configured to drive the vehicle can be arranged in the receiving space bounded by said members. The idea behind the invention is to create a subframe which is configured to receive at least one electric drive motor at least partially, wherein a particularly high stiffness of the subframe can be realized while keeping the weight and the cost of the subframe particularly low. Thereby, the electric drive motor can be mounted on the body of the vehicle via the subframe in a particularly stiff manner. For example, the subframe according to the present invention can be realized as a simple construction by tubing and simple sheet metal pressing, i.e. by using tubular members or tubing parts and parts made of sheet metal. Thus, tubing costs can be kept particularly low so that the subframe can be used for low volume programs.
The lower cross member helps realize a particularly high lateral stiffness and allows to realize a large package space for the electric drive motor to deliver particularly high power. Moreover, the lower cross member can meet service demands for disassembly of the electric drive motor since, for example, the lower cross member is reversibly connected to the lower side member so that the lower cross member can be dismounted from and mounted on the lower side members in a non-destructive manner. Moreover, the subframe according to the present invention can be assembled in a particularly time-saving way since, for example, an optimized welding process can be used. Thus, for example, the subframe can be realized as a light weight tubular subframe for motor vehicles, fuel cell vehicles, electric vehicles and hybrid vehicles in which said receiving space is a cradle in which the electric drive motor can be arranged at least partially so that the electric drive motor can be protected by the subframe surrounding the electric drive motor at least partially.
Preferably, the subframe according to the present invention is configured to be arranged in a rear portion of the vehicle so that the subframe is configured to be connected to a rear portion of the body of the vehicle. For example, the subframe is configured to be arranged beneath a rear luggage compartment of the body of the vehicle.
Further advantages, features, and details of the invention derive from the following description of a preferred embodiment as well as from the drawing. The features and feature combinations previously mentioned in the description as well as the features and feature combinations mentioned in the following description of the figures and/or shown in the figures alone can be employed not only in the respectively indicated combination but also in other combination or taken alone without leaving the scope of the invention.
The drawing shows in: Fig. 1 a schematic perspective view of a subirame for a vehicle, the subframe being configured to be connected to the body of the vehicle and comprising a receiving space for at least one electric drive motor configured to drive the vehicle; and Fig. 2 a further schematic perspective view of the subframe, wherein the electric drive motor is mounted on the subframe.
In the figures the same elements or elements having the same functions are indicated by the same reference signs.
Fig. 1 shows a subframe 10 for a vehicle such as, for example, a passenger vehicle. For example, the vehicle is configured as a motor vehicle, fuel cell vehicle, electric vehicle or hybrid vehicle. The subframe 10 comprises two first side members 1 2a and 1 2b which are configured as, for example, side member assemblies. As can be seen from Fig. 1, the first side members 1 2a, b are arranged at a distance from each other in the transverse direction of the vehicle. In Fig. 1, the transverse direction of the vehicle is indicated by a directional arrow 14. Moreover, the forward driving direction of the vehicle is indicated by a directional arrow 16, wherein the longitudinal direction of the vehicle is indicated by a directional arrow 18. Moreover, the subframe 10 comprises a first cross member 20 which is also referred to as a front cross member, wherein the first cross member 20 is connected to the side members 12a, b respectively. Thus, the side members 12a, bare connected with each other by the front member 20.
In order to realize a particularly high stiffness of the subframe 10, wherein the weight and the cost of the subframe 10 can be kept particularly low the subframe 10 further comprises two lower side members 26a and 26b which are arranged at a distance from each other in the transverse direction of the vehicle. As can be seen from Fig. 1, the lower side members 26a, b are arranged lower than the first side members 1 2a, b in the vertical direction of the vehicle. The vertical direction of the vehicle is indicated by a directional arrow 28.
Furthermore, the subframe 10 comprises a rear cross member 30 which is arranged behind the first cross member 20 in the longitudinal direction of the vehicle. The rear cross member 30 is connected to the first side members 12a, bat least indirectly. In the present case the rear cross member 30 is connected to the first side members 1 2a, b via respective rear brackets 32a and 32b of the subframe 10, wherein the rear brackets 32a, b are connected to the first side members 1 2a, b and the rear cross member 30. Thus, the rear brackets 32a, b are connected with each other via the rear cross member 30.
Additionally, the subframe 10 comprises a lower cross member 34 which is arranged lower than the first cross member 20 and the rear cross member 30 in the vertical direction of the vehicle. The lower cross member 34 is connected to the lower side members 26a, b respectively. As can be seen from Fig. 1, the rear brackets 32a, b are also connected to the lower side members 26a, b. For example, the first cross member 20 is connected to the first side members 1 2a, b by welding. Moreover, the lower side members 26a, b are connected to the first cross member 20 by, for example, welding.
Furthermore, the rear brackets 32a, b can be connected to the lower side members 26a, b and/or the cross member 30 and/or the first side members 1 2a, b by welding.
As can be seen from Figs. 1 and 2, the first cross member 20, the rear cross member 30, the lower cross member 34, the lower side members 26a, b, the rear brackets 32a, b and lateral spring link brackets 36a and 36b bound a receiving space 38 for at least one electric drive motor 40 (Fig. 2) for driving the vehicle. This means the electric drive motor is configured to drive wheels of the vehicle and, thus, the vehicle itself.
The subframe 10 comprises the spring link brackets 36a, b which are arranged between and connected to the first side members 1 2a, b and the lower side members 26a, b. For example, the spring link brackets 36a, b are connected to the first side members 1 2a, b and/or the lower side members 26a, b by welding. The rear brackets 32a, b and the first cross member 20 comprise respective mounting elements 42 for mounting the electric drive motor 40 on the subframe 10. Thus, the electric motor 40 can be supported on the subframe 10 by the mounting elements 42 which are also referred to as electric drive motor mountings.
As can be seen from Fig. 1, each of the spring link brackets 36a, b comprises at least one mounting element 44. For example, at least one stabilizer bar can be mounted on the mounting elements 44, wherein said stabilizer bar is also referred to as a sway bar stabilizer, an anti sway bar or an anti-roll bar. Thus, the mounting elements 44 are also referred to as stabilizer mountings. Moreover, the rear cross member 30, the respective lower side member 26a, b and the lower cross member 34 are configured as tubular members. This means the subframe 10 can be configured as a light weight tubular subframe configured to be arranged in a rear portion of the vehicle. This means the subframe 10 is configured to be mounted or connected to the body of the vehicle. For this purpose the first side members 1 2a, b comprise respective mounting elements 46 by means of which the subframe 10 can be connected to the body. Thus, the mounting elements 36 are also referred to as body mountings.
Moreover, the first side members 1 2a, b comprise respective control arm brackets 48 by means of which control arms can be pivotably mounted on the side members 1 2a, b. Said control arms are used to pivotably mount respective wheels of the vehicle on the subframe 10. For example, the subframe 10 is configured to be arranged beneath a rear portion of the body of the vehicle so that the subframe 10 is arranged on the body upwardly in a mounting direction extending in the vertical direction of the vehicle.
Preferably, the side members 12a, bare made of steel. Preferably, the side members 1 2a, b are made of steel EN 10268-1.0548. Moreover, the first front member 20, the spring link brackets 36a, b and the rear brackets 32a, b are configured as stamping parts.
Preferably, the first cross member 20, the rear brackets 32a-b and the spring brackets 36a, bare made of steel, in particular steel EN 10268-1.0548. Moreover, the side members 26a, b and the rear cross member 30 can be configured as tubing parts and/or made of steel.
Preferably, the lower cross member 34 is configured as an extrusion part. Preferably, the lower cross member 34 is made of aluminum or fiber-reinforced plastics. Thus, the subframe 10 can be configured as a light weight tubular rear subframe design with a combination of stamping parts, simple tubing structure and simple sheet metal parts, wherein, for example, the side members 12a, bare made of sheet metal, i.e. are configured as sheet metal parts. The lower cross member 34 allows realizing a particularly high lateral stiffness.
As can be seen from Fig. 1, the subframe 10 comprises lateral mounting brackets 50 which are connected to the lower side members 26a, b. For example the mounting brackets 50 are welded to the lower side members 26a, b. Moreover, the mounting brackets 50 can be made of steel and/or configured as stamping parts. The lower cross member 34 is connected to lower side members 26a, b via the mounting brackets 50, wherein, for example, the lower cross member 34 is screwed to the mounting brackets 50 and, thus, the lower side members 26a, b. This means nuts and bolts 52 are used to connect the lower cross member 34 to the lower side members 26a, b so that the lower cross member 34 is reversibly connected to the lower side members 26a, b. Thus, the lower cross member 34 can be connected to and dismounted from the mounting brackets and, thus, the lower side members 26a, b in a non-destructive manner. Thereby, the lower cross member 34 which bounds the receiving space 38 in the vertical direction of the vehicle towards the bottom at least partially can be mounted on the lower side members 26a, b after the electric drive motor 40 was arranged in the receiving space 38.
The idea behind the subframe 10 is that since electrical and fuel cell vehicles will be new to the market car manufacturers entry with lesser volumes. Thus, the design of the subframe 10 contains for example 55 percent of simple tubing structure that reduces the manufacturing cost. The assembly of the lower cross member 34 by bolts and nuts helps realizing a particularly high stiffness of the subframe 10 and allows more package space for the electric drive motor 40 which can provide more power to drive the vehicle.
The subframe 10 can be realized as a simple construction by tubing and simple sheet metal pressing which helps reduce tooling costs and is suited for low volume programs.
Moreover, the subframe 10 can be manufactured in a particularly cost-and time-efficient way by using an optimized welding process. In order to mount the electric drive motor on the subframe 10, at first, the electric motor 40 is arranged in the receiving space 38.
Thereafter, the lower cross member 34 is assembled and connected to the lower side members 26a, b. The receiving space 38 is a cradle in which the electric drive motor 40 is arranged at least partially. The described sequence to mount the electric drive motor 40 on the subframe 10 respects the package and allows to realize a particularly large mounting space for the electric drive motor 40. Moreover, said assembly sequence meets service demands for assembly and disassembly of the electric drive motor 40 so that the electric drive motor 40 can be mounted on and dismounted from the subframe 10 particularly easily. In order to dismount the electric drive motor 40, the subframe 10 can stay connected to the body and the lower cross member 34 is removed so that the electric drive motor 40 can be moved out of the receiving space 38, for example, downwards in the vertical direction of the vehicle.
Said tubing parts are normal tubing parts with simple bending and a simple design. Thus any complicated tooling to manufacture said parts can be avoided. The optimized welding and assembly process is well suited for low volume programs like fuel cell vehicles and the like vehicles with alternative drives. For example, the side members 12a, b are carry over parts which can be carried over from existing designs, in particular from existing subframes.
List of reference signs subframe 1 2a, b first side members 14 directional arrow 16 directional arrow 18 directional arrow first cross member 26a, b lower side members 28 directional arrow rear cross member 32a, b rear brackets 34 lower cross member 36a, b spring link brackets 38 receiving space electric drive motor 42 mounting element 44 mounting element 46 mounting element 48 mounting brackets mounting brackets 52 nuts and bolts
Claims (6)
- Claims A subframe (10) for a vehicle, the subframe being configured to be connected to a body of the vehicle and comprising: -two side members (1 2a, b) arranged at a distance from each other in the transverse direction of the vehicle; and -a cross member (20) connected to the side members (12a, b) respectively; characterized in that the subframe (10) comprises: -two lower side members (26a, b) arranged at a distance from each other in the transverse direction of the vehicle, the lower side members (26a, b) being arranged lower than the first side members (1 2a, b) in the vertical direction of the vehicle; -a rear cross member (30) arranged behind the first cross member (20) in the longitudinal direction of the vehicle, the rear cross member (30) being connected to the first side members (12a, b) at least indirectly; and -a lower cross member (34) arranged lower than the first and rear cross members (20, 30) in the vertical direction of the vehicle, the lower cross member (34) being connected to the lower side members (26a, b) respectively, wherein at least the first cross member (20), the rear cross member (30), the lower cross member (34) and the lower side members (26a, b) bound a receiving space (38) for at least one electric drive motor (40) for driving the vehicle.
- 2. The subframe (10) according to claim 1, characterized in that the first cross member (20) comprises at least one mounting element (42) for mounting the electric drive motor (40) on the first cross member (20).
- 3. The subframe (10) according to claim 1 or 2, characterized in that the subframe (10) comprises rear brackets (32a, b) connected to the first side members (12a, b) and the lower side members (26a, b) respectively, wherein the rear cross member (30)is connected to the rear brackets (32a, b).
- 4. The subframe (10) according to claim 3, characterized in that the respective rear bracket (32a, b) comprises at least one mounting element (42) for mounting the electric drive motor (20) on the respective rear bracket (32a, b).
- 5. The subframe (10) according to any one of the preceding claims, characterized in that the subframe (10) comprises spring link brackets (36a, b) arranged between and connected to the first side members (1 2a, b) and the lower side members (26a, b) respectively.
- 6. The subframe (10) according to any one of the preceding claims, characterized in that the rear cross member (30) and/or the respective lower side member (26a, b) and/or the lower cross member (34) is configured as a tubular member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507624.3A GB2526434A (en) | 2015-05-04 | 2015-05-04 | Subframe for a vehicle, in particular a passenger vehicle |
| DE102016004723.2A DE102016004723A1 (en) | 2015-05-04 | 2016-04-19 | Subframe for a vehicle, especially a passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507624.3A GB2526434A (en) | 2015-05-04 | 2015-05-04 | Subframe for a vehicle, in particular a passenger vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201507624D0 GB201507624D0 (en) | 2015-06-17 |
| GB2526434A true GB2526434A (en) | 2015-11-25 |
Family
ID=53489117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1507624.3A Withdrawn GB2526434A (en) | 2015-05-04 | 2015-05-04 | Subframe for a vehicle, in particular a passenger vehicle |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102016004723A1 (en) |
| GB (1) | GB2526434A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017209762A1 (en) | 2017-06-09 | 2018-12-13 | Zf Friedrichshafen Ag | Axle carrier for a motor vehicle |
| DE102017210887A1 (en) | 2017-06-28 | 2019-01-03 | Audi Ag | Subframe for an electrically operated vehicle |
| DE102017220208B4 (en) | 2017-11-14 | 2020-04-09 | Audi Ag | Vehicle axle for a two-lane vehicle |
| DE102017220795A1 (en) | 2017-11-21 | 2019-05-23 | Audi Ag | Vehicle axle of a two-lane vehicle |
| DE102018205085B4 (en) | 2018-04-04 | 2022-09-01 | Audi Ag | Body structure for a vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2571683A1 (en) * | 1984-10-15 | 1986-04-18 | Durand Francois | VEHICLE FOR INDIVIDUAL TRANSPORT OF GOODS |
| WO2005012605A2 (en) * | 2003-08-04 | 2005-02-10 | Daiwabo Co., Ltd. | Filler-fixed fiber, fiber structure, molded fiber, and processes for producing these |
| JP2009190684A (en) * | 2008-02-18 | 2009-08-27 | Autobacs Seven Co Ltd | Rear sub-frame of automobile |
| US20100230192A1 (en) * | 2009-03-12 | 2010-09-16 | Riley Robert Q | Hybrid vehicle |
| DE102010017991A1 (en) * | 2010-04-21 | 2011-10-27 | Fachhochschule Südwestfalen | Autonomous axle module for motor vehicle, has electric drive wheel suspension unit for driving left or right wheel, where axle module is operated separately in permanently functional manner |
| DE102012013909A1 (en) * | 2012-07-13 | 2014-01-16 | Man Truck & Bus Ag | Frame support structure i.e. undercarriage, for e.g. semi-trailer lorry, has powertrain unit driving commercial vehicle, and carrying device receiving and supporting powertrain unit and formed in self-supporting manner |
| DE102014018442A1 (en) * | 2014-12-12 | 2015-06-18 | Daimler Ag | Support frame for a truck in modular design |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009052920A1 (en) | 2009-11-12 | 2010-06-17 | Daimler Ag | Auxiliary and especially integral truss, for an automobile chassis, has longitudinal and lateral support members of a lightweight metal or alloy |
| DE102012023363B4 (en) | 2012-11-29 | 2014-06-26 | Audi Ag | Subframe for a motor vehicle |
-
2015
- 2015-05-04 GB GB1507624.3A patent/GB2526434A/en not_active Withdrawn
-
2016
- 2016-04-19 DE DE102016004723.2A patent/DE102016004723A1/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2571683A1 (en) * | 1984-10-15 | 1986-04-18 | Durand Francois | VEHICLE FOR INDIVIDUAL TRANSPORT OF GOODS |
| WO2005012605A2 (en) * | 2003-08-04 | 2005-02-10 | Daiwabo Co., Ltd. | Filler-fixed fiber, fiber structure, molded fiber, and processes for producing these |
| JP2009190684A (en) * | 2008-02-18 | 2009-08-27 | Autobacs Seven Co Ltd | Rear sub-frame of automobile |
| US20100230192A1 (en) * | 2009-03-12 | 2010-09-16 | Riley Robert Q | Hybrid vehicle |
| DE102010017991A1 (en) * | 2010-04-21 | 2011-10-27 | Fachhochschule Südwestfalen | Autonomous axle module for motor vehicle, has electric drive wheel suspension unit for driving left or right wheel, where axle module is operated separately in permanently functional manner |
| DE102012013909A1 (en) * | 2012-07-13 | 2014-01-16 | Man Truck & Bus Ag | Frame support structure i.e. undercarriage, for e.g. semi-trailer lorry, has powertrain unit driving commercial vehicle, and carrying device receiving and supporting powertrain unit and formed in self-supporting manner |
| DE102014018442A1 (en) * | 2014-12-12 | 2015-06-18 | Daimler Ag | Support frame for a truck in modular design |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016004723A1 (en) | 2016-11-10 |
| GB201507624D0 (en) | 2015-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |