CN106627763B - Front longitudinal beam rear section enclosed construction and electric automobile including same - Google Patents
Front longitudinal beam rear section enclosed construction and electric automobile including same Download PDFInfo
- Publication number
- CN106627763B CN106627763B CN201611205696.7A CN201611205696A CN106627763B CN 106627763 B CN106627763 B CN 106627763B CN 201611205696 A CN201611205696 A CN 201611205696A CN 106627763 B CN106627763 B CN 106627763B
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- connecting part
- connection
- longitudinal beam
- rear section
- front longitudinal
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Classifications
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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
-
- 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
Abstract
The application discloses a front longitudinal beam rear section sealing structure and an electric automobile comprising the same. The front longitudinal back end seal structure includes front longitudinal back end body, still includes: a first connecting member attached to one segment of the front side rail rear section body and having a notch communicating in a lateral direction; and a second connection member detachably fitted to the first connection member to close the notch of the first connection member to form a space for installing other components. The application adopts a detachable structure, which not only leaves the assembly, disassembly and movement space of the transmission shaft, but also ensures the integral strength of the front longitudinal beam.
Description
Technical Field
The application relates to an automobile body structural member, in particular to a front longitudinal beam rear section sealing structure.
The application also relates to an electric automobile provided with the front longitudinal beam and rear section closed structure.
Background
With the continuous progress of technology, the body structure of the electric automobile is greatly different from that of the traditional fuel automobile, and the traditional repairing and repairing mode on the body structure of the fuel automobile type cannot meet the increasingly strict collision and safety requirements. Development of a brand new vehicle body structure for the characteristics of electric vehicles has gradually become a trend. The front side member is an important bearing part in the traditional vehicle body structure, and is also a key component for absorbing energy in a frontal collision, so that important attention is required in the design of the vehicle body structure. Currently, power batteries are generally arranged at the lower part of a vehicle body floor, and the whole vehicle quality of the electric vehicle is generally larger than that of a traditional fuel vehicle due to larger battery quality. Meanwhile, since the electric automobile is equipped with a large number of high-voltage components, the high-voltage components (particularly the driving battery) are prevented from suffering large impact to the greatest extent when collision occurs. When the front longitudinal beam is required to be designed, the front part is ensured to have enough energy absorption collapsing space, and the rear part of the longitudinal beam is ensured to have enough supporting strength, so that the driving battery is prevented from being damaged.
In order to improve collision performance and bearing strength, a design of reducing the relative height of a floor is generally adopted in the front longitudinal beam structure of an electric vehicle which is mainstream at present. The front longitudinal beam structure design improves collision performance, but the front longitudinal beam occupies a mounting space of the front motor transmission shaft due to lower position of the longitudinal beam, so that the front motor transmission shaft is difficult to mount or even cannot mount. If the assembly space of the transmission shaft is cut out on the longitudinal beam, local stress concentration of the longitudinal beam can be caused during collision, and the collision performance of the front longitudinal beam is greatly reduced. When the electric automobile realizes the four-wheel drive function, a front-rear double-motor arrangement mode is generally adopted, so that the front longitudinal beam mode with simple structure and good reliability is required to be designed, and the requirements of collision energy absorption and front motor transmission shaft assembly and disassembly can be met.
Disclosure of Invention
The application aims to solve the technical problem of providing a front longitudinal beam, in particular to a rear section part of the front longitudinal beam, and the height between the rear section of the front longitudinal beam and a vehicle body floor is reduced on the premise of ensuring the strength of the longitudinal beam.
One aspect of the present application relates to a front-side-member rear-section closed structure including a front-side-member rear-section body, further comprising:
a first connecting member attached to one segment of the front side rail rear section body and having a notch communicating in a lateral direction; and
and a second connection member detachably fitted to the first connection member to close the notch of the first connection member to form a space for installing other components.
The rear section of the front longitudinal beam adopts a detachable and connected split structure. After the rear section closed structure is formed by the first connecting part and the second connecting part, the assembly, disassembly and movement space of the transmission shaft are reserved, and the integral strength of the front longitudinal beam is ensured. With this structure, the relative height between the front side member and the vehicle body floor can be reduced to a low level, and the collision performance of the front side member can be improved.
Optionally, in the front-side member rear section closing structure described above, the bottom of the first connecting member is formed with the notch together with the front-side member rear section body. The closed structure utilizes part of the space of the front side member, so that the installation is more compact and the strength is ensured.
Optionally, in the front-side-beam rear-section closed structure, the front-side-beam rear-section body is welded to the first connecting member; the first connecting part is connected with the second connecting part through bolts, and the first connecting part is connected with the second connecting part through bolts.
Optionally, in the front-side member rear section closing structure, the bolt connection between the first connecting member and the second connecting member is at least two, wherein a first bolt connection is a connection in a first direction, and a second bolt connection is a connection in a second direction perpendicular to the first direction.
Optionally, in the front-side member rear-section closed structure, the first direction is an up-down direction, and the first bolt is connected at a relatively forward position of the front-side member rear-section closed structure; the second direction is a transverse direction, and the second bolt is connected to a relatively rear position of the front-side member rear section closing structure.
The front-side member rear-section closing structure of the present application allows for spatial layout and positioning and connection in multiple directions, so that the second connecting member is firmly and conveniently mounted on the first connecting member.
Optionally, in the front-side member rear section sealing structure, a first tooth guiding structure is further provided between the first connecting component and the second connecting component, the first tooth guiding structure includes a first protruding portion and a recess portion matched with the first protruding portion, the first protruding portion is disposed on one of the first connecting component and the second connecting component, and the recess portion is disposed on the other one.
Optionally, in the front longitudinal back section enclosed structure, a second tooth guiding structure is further provided between the first connecting component and the second connecting component, the second tooth guiding structure includes a second protruding portion and a restraining portion in which the second protruding portion can be embedded, bolt through holes are formed in the restraining portion for penetrating bolts, the second protruding portion is disposed on one of the first connecting component and the second connecting component, and the restraining portion is formed on two lateral opposite sides of the other.
The first connecting part and the second connecting part which form the rear section of the front longitudinal beam are respectively provided with tooth-shaped protruding features, so that the assembly guiding function is realized, and the strength of the longitudinal beam is enhanced after the assembly guiding function is realized.
Optionally, in the front-side member rear-section closed structure described above, the first connecting member is provided with a plurality of lightening holes; the bottom of the second connecting part is provided with longitudinal ribs.
Optionally, in the front longitudinal beam rear section closed structure, the second connecting component is further provided with a mounting hole connected with the front longitudinal beam rear section body and the front auxiliary frame, and a positioning hole for matching with the front auxiliary frame tool is formed in one side of the second connecting component.
The second connecting part is provided with a tooling structure for being matched with a front auxiliary frame tooling, and the tooling structure can be quickly positioned and installed on a vehicle body together with the front auxiliary frame.
Another aspect of the present application is an electric vehicle, including a motor disposed in a front vehicle body and two front side members, the motor being between the front side members, the front side members having the front side member rear section closed structure described above, a space formed by the notch of the first connecting member being for receiving a drive shaft of the motor.
This electric automobile has reduced the weight of longeron self when guaranteeing not influencing collision performance and longeron intensity owing to adopted new front and back end seal structure, has taken into account the convenience of transmission shaft dismouting simultaneously, can realize quick location and dismouting with the help of frock clamp.
Other aspects and features of the present application will become apparent from the following detailed description, which refers to the accompanying drawings. It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the application, for which reference should be made to the appended claims. It should be further understood that the drawings are merely intended to conceptually illustrate the structures and procedures described herein and that, unless otherwise indicated, the drawings are not necessarily drawn to scale.
Drawings
The present application will be more fully understood from the following detailed description of the specific embodiments, taken in conjunction with the accompanying drawings, in which like reference numerals refer to like elements throughout the views. Wherein:
FIG. 1 is an exploded schematic view of one embodiment of a front rail rear end closure structure in accordance with the present application;
FIG. 2 is a schematic view of section A-A of FIG. 1;
FIG. 3 is a schematic view of an embodiment of a second attachment member in a front rail rear closure structure in accordance with the present application;
FIG. 4 is a schematic view of an assembled front rail rear end closure structure in accordance with the present application; and
fig. 5 is a schematic view of an assembled front rail rear section closure structure in a vehicle body in accordance with the present application.
Detailed Description
In order to assist those skilled in the art in precisely understanding the subject matter claimed herein, a detailed description of the application is provided below in connection with the accompanying drawings.
Referring to fig. 1, an exploded view of a front side member rear end closure structure according to the present application is shown. The front side member rear section closing structure includes a front side member rear section body 1, a first connecting member 2 (i.e., an upper connecting member), and a second connecting member 3 (i.e., a lower connecting member). The front side member rear section body 1 may be an elongated member made of a plurality of thin-walled tubular metal members, reference being made to the cross section shown in fig. 2. Fig. 1 shows a front side member rear body 1 of a segment, in which the left-right direction is longitudinal, the left side is front, and the right side is rear with respect to the vehicle body. The front side member rear body 1 is a portion located behind the front side member and close to the subframe with respect to the entire front side member. The application relates to a front longitudinal beam rear section sealing structure which is arranged on a section of a front longitudinal beam rear section. The front longitudinal beam rear section body 1 is fixedly connected with the first connecting part 2, and the second connecting part 3 is detachably assembled and connected with the first connecting part 2. According to the shape of the first connecting member 2, a notch with a predetermined shape is cut in the front side member rear section body 1 to facilitate attachment of the first connecting member 2. The front longitudinal beam rear section body 1 is welded with the first connecting part 2. The first connecting part 2 is also provided with a notch 21 in the bottom, which notch 21 is used for the passage of other parts in the vicinity of the rear section of the front side rail. When the first connecting member 2 is welded to the front side member rear body 1, the notch 21 opens downward to form a space 4 extending transversely therethrough, the transverse direction being substantially perpendicular to the longitudinal direction along which the front side member is disposed. The first connecting part 2 and the second connecting part 3 are connected by bolts. Bolt through holes 27, 28, 37 (fig. 3), 38 are provided in each of the first connecting member 2 and the second connecting member 3. The second connecting member 3 can be fastened to the first connecting member 2 by bolts. When the second connecting part 3 is connected to the first connecting part 2, the notch 21 of the first connecting part 2 can be closed, which notch 21 thereby forms a space 4 for mounting other parts (see fig. 4-5).
The rear section of the front longitudinal beam is not a welded integral structure, but a detachable and connected split structure is adopted. After the rear section closed structure is formed by the upper connecting part and the lower connecting part, the assembly, disassembly and movement space of the transmission shaft 71 is reserved, and the integral strength of the front longitudinal beam is ensured.
Returning to and in conjunction with fig. 1 and 3, there are at least two bolted connections between the first connection part 2 and the second connection part 3. The first screw connection 5 is a connection in the first direction z, i.e. in the up-down direction, which is in the forward position of the entire closure. The second screw connection 6 is a connection in the second direction y, i.e. in the transverse direction, which is in the rear position of the entire closure. The second direction y is substantially perpendicular to the first direction z. The arrangement of the first bolting 5 in the up-down direction in the forward position and the arrangement of the second bolting 6 in the transverse direction in the rear position corresponds to the structure of the front side rail itself, which contributes to space saving. For the first bolt connection 5, a bolt through hole 27 is formed in the bottom of the first connection part 2, a bolt through hole 37 is correspondingly formed in the second connection part 3, and bolts sequentially penetrate through the second connection part 3 and the first connection part 2 from bottom to top to be fastened. The number, the aperture, the position and the like of the bolt through holes 27 and 37 are calculated by dimension design and strength, and the bolt through holes can be arranged in a staggered manner as shown in fig. 1 and 3, and other arrangement manners are also possible. For the second bolted connection 6, bolt through holes 28 are provided on opposite sides of the first connection part 2, respectively, and the second connection part 3 is provided with bolt through holes 38 at corresponding places, through which bolts are fastened in turn in the transverse direction to form the second bolted connection 6 (see below in fig. 2).
Tooth guiding structures are further arranged between the first connecting part 2 and the second connecting part 3 and comprise a first tooth guiding structure and a second tooth guiding structure. The first tooth guiding structure comprises two first protrusions 22 provided on the bottom of the first connecting part 2 and correspondingly two recesses 32 provided on the second connecting part 3, the two first protrusions 22 being insertable into the two corresponding recesses 32. The first boss 22 is toothed. The first tooth guide structure not only has a guiding function, but also has a strength reinforcing function due to the engagement of the teeth. It is conceivable to the person skilled in the art that it is also possible to provide the first connecting part 2 with a recess and the second connecting part 3 with a first projection, as well as to achieve a dual effect of guiding and strength.
The second tooth guide structure includes a second boss 31 provided on the second connecting member 3 and restraining portions 24 formed on laterally opposite sides of the first connecting member 2, the second boss 31 being capable of being embedded in both restraining portions 24. The second boss 31 is tooth-shaped with a certain thickness. The second protrusions 31 are inserted between the constraining sections 24, which serves both as a guide and the presence of teeth enhances strength. The second screw connection 6 is integrated in the second tooth guide structure. The second protruding portion 31 is provided with an elongated bolt through hole 38, the two restraining portions 24 are provided with bolt through holes 28, and after the second protruding portion 31 is embedded in the restraining portions 24 and is installed in place, bolts sequentially penetrate through the bolt through holes 28 and 38 to achieve fastening. It is conceivable to the person skilled in the art that it is also possible to provide a second bulge on the first connecting part 2, a constraint on the second connecting part 3, or three constraints on the first connecting part 2, and two second bulges on the second connecting part 3 to be respectively embedded between two constraints to achieve the same guiding and mounting effect described above.
A number of lightening holes 26 (see fig. 1) may be suitably arranged on the surface of the first connecting part 2, the bottom of the second connecting part 3 being provided with one or more longitudinal ribs 36 to strengthen the strength in this direction (see fig. 2 below).
The second connecting part 3 is also provided with a tooling structure which is convenient for installing other parts. With continued reference to fig. 3, a mounting hole 34 is provided at a rear position of the second connecting member 3 to be connected to the front-side-member rear-section body 1 and the front subframe, and the front subframe is mounted to the front-side-member rear-section body 1 through the mounting hole 34.
Two positioning holes 35 for matching with the front auxiliary frame fixture are also formed on one side of the second connecting part 3, as shown in fig. 3.
The application relates to a process for mounting a front longitudinal beam rear section closed structure on a vehicle body, which comprises the following steps:
the front longitudinal beam rear section body 1 is provided with a hole, the first connecting part 2 is basically matched with the hole, and the front longitudinal beam rear section body 1 is fixed by adopting a welding mode. At this time, the notch at the lower part of the front longitudinal beam rear section body 1 is not closed, so as to complete the assembly of the transmission shaft 71 of the motor 7.
The drive shaft 71 of the motor 7 is passed through the unsealed gap.
The second connecting part 3 is provided with a mounting hole and a positioning hole for positioning and matching the front auxiliary frame and a fixture thereof, and when the front auxiliary frame and the vehicle body are assembled, the second connecting part 3 can be quickly positioned and mounted at a design position together with the front auxiliary frame.
The second connecting part 3 is quickly mounted to the first connecting part 2 by means of the first tooth guide structure, the second tooth guide structure. Specifically, the first protruding portion of the first connecting member 2 is inserted into the recessed portion of the second connecting member 3, the second protruding portion of the second connecting member 3 is inserted between the restraining portions of the first connecting member 2, and the bolt through holes thereof are aligned.
Bolts are screwed into the bolt through holes of the first connecting member 2 and the second connecting member 3, and bolts for installing the front subframe are screwed.
When the second connecting part 3 is mounted to the first connecting part 2, the rear front rail section forms a closed structure, see fig. 4-5. The space 4 through which the drive shaft 71 of the motor 7 passes is a closed space, and the closed structure reinforces the strength of the front side rail.
Above-mentioned scheme, the height between front longitudinal beam back end and the floor 8 obtains reducing, can reduce longeron weight when guaranteeing not influencing front longitudinal beam collision performance, guarantees the assembly space of the transmission shaft 71 of front motor 7, and whole assembly process is simple, and the maintenance is dismantled conveniently good, has further reduced the cost in production and the after-sale maintenance in-process.
For convenience of description, terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "both sides", and the like, referring to the present application, refer to the direction of the front side member rear section closing structure in the vehicle body. However, the above-described azimuth terms are only for convenience of description, and it is conceivable to those skilled in the art that the description of the front side member of the vehicle may not be limited to the above-described azimuth terms. Within three dimensions, these azimuthal terms may vary.
While specific embodiments of the application have been shown and described in detail to illustrate the principles of the application, it will be understood that the application may be embodied otherwise without departing from such principles.
Claims (8)
1. The front longitudinal beam rear section enclosed structure comprises a front longitudinal beam rear section body (1), and is characterized by further comprising:
-a first connection part (2), which first connection part (2) is attached to one segment of the front rail rear section body (1) and has a notch (21) communicating laterally, the bottom of the first connection part (2) together with the front rail rear section body (1) forming the notch (21), a space (4) formed by the notch (21) of the first connection part (2) being configured to receive a drive shaft of a motor; and
a second connection member (3), the second connection member (3) being detachably fitted to the first connection member (2) to close a notch (21) of the first connection member (2) to form a space (4) for mounting other members;
the second connecting part (3) is also provided with a mounting hole (34) connected with the front longitudinal beam rear section body (1) and the front auxiliary frame, and one side of the second connecting part (3) is provided with a positioning hole (35) for matching with the front auxiliary frame tool.
2. The front-rail rear-section closed structure according to claim 1, characterized in that: the front longitudinal beam rear section body (1) is welded with the first connecting component (2); the first connecting part (2) is connected with the second connecting part (3) through bolts, bolt through holes (27, 28, 37, 38) are formed in the first connecting part (2) and the second connecting part (3), and connection is achieved through the bolts.
3. The front-side rail rear-section closed structure according to claim 2, characterized in that: the screw connections between the first connecting part (2) and the second connecting part (3) are at least two, wherein the first screw connection (5) is a connection in a first direction (z) and the second screw connection (6) is a connection in a second direction (y) perpendicular to the first direction (z).
4. A front rail rear end closure according to claim 3, wherein: the first direction (z) is an up-down direction, and the first bolt connection (5) is at a relatively front position of the front longitudinal beam rear section closed structure; the second direction (y) is a transverse direction and the second bolting (6) is in a relatively rear position of the front rail rear section closure.
5. The front-side rail rear-section closed structure according to claim 2, characterized in that: still be provided with first tooth guide structure between first connecting piece (2) with second connecting piece (3), first tooth guide structure include first bellying (22) with cooperate in depressed part (32) of first bellying (22), first bellying (22) set up in on one of them connecting piece (2) with second connecting piece (3), depressed part (32) set up on another.
6. The front-side rail rear-section closed structure according to claim 2, characterized in that: still be provided with second tooth guide structure between first connecting part (2) with second connecting part (3), second tooth guide structure include second bellying (31) with restraint portion (24) that second bellying (31) can imbed, second bellying (31) restraint portion (24) are last all to be equipped with bolt via hole (28, 38) for the bolt to penetrate, second bellying (31) set up in first connecting part (2) with on one of them of second connecting part (3), restraint portion (24) form on the lateral opposite both sides of another.
7. The front-side rail rear-section closed structure according to claim 2, characterized in that: the first connecting part (2) is provided with a plurality of lightening holes (26); a longitudinal rib (36) is provided on the bottom of the second connecting part (3).
8. The utility model provides an electric automobile, is including setting up motor (7) and two front longitudinal beams in preceding automobile body, motor (7) are in between the front longitudinal beam, characterized by: the front side member has the front side member rear section closing structure according to claim 1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205696.7A CN106627763B (en) | 2016-12-23 | 2016-12-23 | Front longitudinal beam rear section enclosed construction and electric automobile including same |
| PCT/CN2017/117962 WO2018113772A1 (en) | 2016-12-23 | 2017-12-22 | Vehicle and front longitudinal beam thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205696.7A CN106627763B (en) | 2016-12-23 | 2016-12-23 | Front longitudinal beam rear section enclosed construction and electric automobile including same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106627763A CN106627763A (en) | 2017-05-10 |
| CN106627763B true CN106627763B (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611205696.7A Active CN106627763B (en) | 2016-12-23 | 2016-12-23 | Front longitudinal beam rear section enclosed construction and electric automobile including same |
Country Status (1)
| Country | Link |
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| CN (1) | CN106627763B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018113772A1 (en) * | 2016-12-23 | 2018-06-28 | 上海蔚来汽车有限公司 | Vehicle and front longitudinal beam thereof |
| CN206900487U (en) * | 2017-04-07 | 2018-01-19 | 上海蔚来汽车有限公司 | Front lower longeron component and include its vehicle |
| CN109808771B (en) * | 2017-11-20 | 2020-09-29 | 上海汽车集团股份有限公司 | Vehicle, auxiliary frame mounting structure and design method thereof |
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| JPH06115363A (en) * | 1992-10-06 | 1994-04-26 | Toyota Motor Corp | Mount bracket |
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| Publication number | Publication date |
|---|---|
| CN106627763A (en) | 2017-05-10 |
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