CN217100161U - Front auxiliary frame structure of miniature electric vehicle - Google Patents

Abstract

The application provides a sub vehicle frame structure before miniature electric motor car, including preceding sub vehicle frame and front beam, be provided with first linking bridge on the preceding sub vehicle frame, be provided with on the front beam with first linking bridge complex second linking bridge, first linking bridge with the connection can be dismantled to the second linking bridge. The application provides a sub vehicle frame structure before miniature electric motor car through designing a front beam, makes it can dismantle with preceding sub vehicle frame and be connected, effectively promotes vehicle lateral rigidity, improves the anti nodding of braking and the anti pitch performance of drive, and this front beam is as the after-sale optional product, realizes the differentiation installation to the different situation of different customer groups, can compromise the cost simultaneously, operates stability ability and comfort, satisfies the customer demand in the at utmost.

Description

Front auxiliary frame structure of miniature electric vehicle

Technical Field

The application relates to the technical field of minicar parts, in particular to a front auxiliary frame structure of a miniature electric vehicle.

Background

With the global energy shortage, the aggravation of the greenhouse effect and the increasingly serious urban traffic congestion, in order to meet the daily walk-substituting requirements of vast middle-low income groups, the rapid development of the miniature environment-friendly electric automobile becomes a trend, and the miniature environment-friendly electric automobile gradually becomes a vehicle for people to go out daily.

The general auxiliary frame of the chassis of the miniature electric vehicle is compact in structural design under the limitation of the endurance mileage and weight cost of the miniature electric vehicle, so that the unsprung mass and the cost of the vehicle can meet the design target. However, this approach often sacrifices the stability and comfort of the vehicle to some extent, such as a schematic diagram of a front macpherson suspension of a miniature electric vehicle shown in fig. 1, which cancels a front stabilizer bar structure and sacrifices the roll stiffness of the suspension to some extent.

The structure of the front auxiliary frame of the micro electric automobile which is mainstream in the market at present is divided into two types, one type does not sacrifice the stability performance and the comfort performance, and the structure design of the front auxiliary frame of the micro electric automobile is not much different from that of the traditional automobile, but has the problems of more complex structure, heavier weight, higher cost and the like; the other type of the miniature electric automobile sacrifices certain stability and comfort performance, and the front auxiliary frame of the miniature electric automobile is simple in structural design, low in weight and overall cost, but has the problems of reduced safety performance, reduced comfort and the like. The preceding sub vehicle frame structure of two kinds of miniature electric automobile all has certain drawbacks, if need satisfy the differentiation of different customer groups under different conditions and use the car demand, then need change the overall structure of preceding sub vehicle frame, and the cost is great, can not satisfy the customer demand in the at utmost.

Disclosure of Invention

The technical problem how realize the installation of sub vehicle frame structure differentiation before miniature electric motor car will be solved in this application.

In order to solve the technical problem, the technical scheme adopted by the application is as follows: the utility model provides a sub vehicle frame structure before miniature electric motor car, includes preceding sub vehicle frame and front beam, be provided with first linking bridge on the preceding sub vehicle frame, be provided with on the front beam with first linking bridge complex second linking bridge, first linking bridge with the connection can be dismantled to the second linking bridge.

Preferably, the first connecting support and the second connecting support are symmetrically arranged, and the front subframe and the second connecting support are of tubular beam structures.

Further, still include the bolt, first linking bridge passes through with second linking bridge is connected through the bolt.

Furthermore, the front cross beam comprises a front pull rod and a front stabilizer bar, wherein a front pull rod mounting point and a front stabilizer bar mounting support are arranged at two ends of the front cross beam, and the front pull rod and the front stabilizer bar are respectively connected with the front cross beam through the front pull rod mounting point and the front stabilizer bar mounting support.

Furthermore, the device also comprises a glass fiber plate spring, a rear connecting rod and a front ball pin base, wherein the glass fiber plate spring, the rear connecting rod, the front pull rod and the front stabilizing rod are connected through the front ball pin base.

Further, the both sides of preceding sub vehicle frame are provided with back swing arm mounting point, preceding sub vehicle frame with the back connecting rod passes through back swing arm mounting point connects, the front end downside of preceding sub vehicle frame is provided with glass fiber leaf spring mounting point, preceding sub vehicle frame with the glass fiber leaf spring passes through glass fiber leaf spring mounting point connects.

Preferably, the mounting point of the rear swing arm is close to the connecting point of the vehicle body, and the rigidity of the mounting point is higher; the mounting point of the glass fiber plate spring is located at the joint of the cross beam and the longitudinal arm of the front auxiliary frame, so that the rigidity of the local mounting point is ensured.

Further, the rear end of the first connecting support is provided with a first welding edge, the first connecting support is connected with the main body of the front auxiliary frame through the first welding edge, and a first bolt hole is formed in the first connecting support in a penetrating mode.

Furthermore, a second welding edge is arranged at the front end of the second connecting support, the second connecting support is connected with the main body of the front cross beam through the second welding edge, and a second bolt hole is formed in the second connecting support in a penetrating mode.

Furthermore, four ends of the front auxiliary frame are provided with front auxiliary frame vehicle body connection points, two ends of the front cross beam are provided with front cross beam vehicle body connection points, and the front auxiliary frame and the front cross beam are connected with a vehicle body through the front auxiliary frame vehicle body connection points and the front cross beam vehicle body connection points respectively.

Furthermore, both sides of the first connecting bracket are provided with flanges.

Furthermore, the upper side of the second connecting support is provided with an avoiding concave rib, and the lower side of the rear end of the second connecting support is provided with a notch.

By adopting the technical scheme, the application has the following beneficial effects:

the application provides a pair of sub vehicle frame structure before miniature electric motor car through the dismantled connection of the second linking bridge that sets up on the first linking bridge that sets up on the sub vehicle frame of front and the front beam, realizes dismantling of sub vehicle frame and front beam and is connected, effectively promotes vehicle lateral rigidity, improves the anti head of braking and the anti pitching performance of drive. This front beam is as after-sale optional equipment product, realizes the differentiation installation to the different condition of different customer groups, can compromise cost, operate steady performance and comfort simultaneously, satisfies the customer's demand in the at utmost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a front Macpherson suspension of a miniature electric vehicle according to the prior art;

FIG. 2 is a schematic overall view of a front subframe structure of a miniature electric vehicle according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a front subframe of a miniature electric vehicle according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a front cross member of a miniature electric vehicle according to an embodiment of the present disclosure;

FIG. 5 is a schematic view illustrating a connection between a front subframe and a front cross member of a miniature electric vehicle according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a first connecting bracket of a micro electric vehicle according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a second connecting bracket of a micro electric vehicle according to an embodiment of the present application.

The following is a supplementary description of the drawings:

1-a front subframe; 11-a first connecting bracket; 111-a first welded edge; 112-flanging; 113-a first bolt hole; 12-front subframe body attachment points; 13-rear swing arm mounting point; 14-mounting points for glass fiber plate springs; 2-front beam; 21-a second connecting bracket; 211-second welded edge; 212-avoiding concave ribs; 213-second bolt hole; 214-a notch; 22-front cross member body attachment point; 23-front tie rod mounting point; 24-a front stabilizer bar mounting bracket; 3-a glass fiber plate spring; 4-a rear connecting rod; 5-front pull rod; 6-front stabilizer bar; 7-front ball pin seat; 8-bolt.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

Example (b):

as shown in fig. 2, the application provides a sub vehicle frame structure before miniature electric motor car, including preceding sub vehicle frame 1 and front beam 2, preceding sub vehicle frame 1 is pi style of calligraphy structure, front beam 2 is U style of calligraphy structure, the crossbeam and the longitudinal arm of preceding sub vehicle frame 1 adopt the tubular beams structure, the cost is lower than the welding piece, and bending resistance and torsion resistance are strong, be provided with first linking bridge 11 on the preceding sub vehicle frame 1, the quantity of first linking bridge 11 is two and be the symmetric distribution, be provided with on the front beam 2 with first linking bridge 11 complex second linking bridge 21, equally, second linking bridge 21 quantity is two and be the symmetric distribution, first linking bridge 11 can dismantle with second linking bridge 21 and be connected. The detachable front cross beam 2 can meet the requirements of different customer groups on different performances of the front auxiliary frame structure under different conditions.

Specifically, as shown in fig. 5, the vehicle body connecting structure further comprises a bolt 8, the first connecting support 11 is connected with the second connecting support 21 through the bolt 8, on one hand, because the front beam 2 is provided with the front beam vehicle body connecting point 22, when the front subframe 1 is connected with the front beam 2, the connecting points of the front subframe 1 and the vehicle body are increased, on the other hand, the structure obviously improves the rigidity of the local mounting points on the front beam 2, through CAE analysis, the rigidity of the front pull rod mounting point 23 in each direction is improved by nearly one time, and the detachable connection of the front subframe 1 and the front beam 2 is realized through the bolt 8, so that the operation is convenient.

Specifically, as shown in fig. 2 and 4, the front sub-frame further includes a front pull rod 5 and a front stabilizer bar 6 for improving the lateral rigidity of the front sub-frame structure and the stability of the whole vehicle, the travelling comfort, the anti performance such as pitching of braking anti-nod and drive, the quantity of front pull rod 5 is two and symmetric distribution, front stabilizer bar 6 is a few font structures, front beam 2's both ends all are provided with front pull rod mounting point 23 and front stabilizer bar installing support 24, two front pull rod mounting point 23 are located front beam 2's downside and are symmetric distribution, two front stabilizer bar mounting point 24 are located front beam 2's rear side and are symmetric distribution, front pull rod 5 is connected with front beam 2 through front pull rod mounting point 23, be provided with on the front stabilizer bar 6 with front stabilizer bar mounting point 24 assorted front stabilizer bar mounting block, front stabilizer bar 6 and front beam 2 realize dismantling the connection through front stabilizer bar mounting block and front stabilizer bar mounting point 24.

Specifically, as shown in fig. 2, the device further comprises a glass fiber plate spring 3, a rear connecting rod 4 and a front ball pin seat 7, wherein the glass fiber plate spring 3, the rear connecting rod 4, the front pull rod 5 and the front stabilizer bar 6 are connected through the front ball pin seat 7. The glass fiber plate spring 3 is lighter than a traditional steel structure plate spring by more than 60%, so that the whole quality of the front auxiliary frame structure can be reduced by using the glass fiber plate spring 3, the design is good, the strength is high, the fatigue life is long, the number of independent parts of a suspension system can be reduced, the structure and the assembly process are simplified, and the mass production of the front auxiliary frame structure is facilitated; the number of the rear connecting rods 4 is two and the rear connecting rods are symmetrically distributed, and the number of the front ball pin bases 7 is two and the front ball pin bases are symmetrically distributed.

Specifically, as shown in fig. 2 and fig. 3, rear swing arm mounting points 13 are arranged on two sides of a front subframe 1, the rear swing arm mounting points 13 are close to a vehicle body connecting point, the mounting point rigidity is high, the front subframe 1 is connected with a rear connecting rod 4 through the rear swing arm mounting points 13, a glass fiber plate spring mounting point 14 is arranged on the lower side of the front end of the front subframe 1, the number of the glass fiber plate spring mounting points 14 is two and is symmetrically distributed, the two glass fiber plate spring mounting points 14 are respectively located at two cross-connecting positions of a cross beam and a longitudinal arm of the front subframe 1, the local mounting point rigidity is ensured, and the front subframe 1 is connected with the glass fiber plate spring 3 through the glass fiber plate spring mounting points 14.

Specifically, as shown in fig. 6, a first welding edge 111 is disposed at the rear end of the first connecting bracket 11, the first connecting bracket 11 is connected to the main body of the front subframe 1 through the first welding edge 111, and a first bolt hole 113 is disposed on the first connecting bracket 11 in a penetrating manner.

Specifically, as shown in fig. 7, a second welding edge 211 is provided at the front end of the second connecting bracket 21 to realize full welding between the second connecting bracket and the front cross beam, so as to ensure welding strength, the second connecting bracket 21 is connected to the main body of the front cross beam 2 via the second welding edge 211, and a second bolt hole 213 is provided on the second connecting bracket 21 in a penetrating manner.

Specifically, as shown in fig. 3 and 4, the front subframe 1 is provided with front subframe body connection points 12 at four ends thereof, the front cross member 2 is provided with front cross member body connection points 22 at two ends thereof, and the front subframe 1 and the front cross member 2 are connected to the body through the front subframe body connection points 12 and the front cross member body connection points 22, respectively.

Specifically, as shown in fig. 6, flanges 112 are disposed on both sides of the first connecting bracket 11, so as to increase the welding length between the first connecting bracket 11 and the front subframe 1, thereby ensuring the welding strength and the rigidity of the first connecting bracket 11 itself.

Specifically, as shown in fig. 7, an avoiding concave rib 212 is arranged on the upper side of the second connecting bracket 21 to avoid the motion envelope of the front stabilizer bar, and a notch 214 is arranged on the lower side of the rear end of the second connecting bracket 21 to facilitate installation.

In this embodiment, when the miniature electric vehicle leaves the factory, the front subframe structure only includes a front subframe 1, a glass fiber plate spring 3, a rear connecting rod 4 and a front ball pin seat 7, the glass fiber plate spring 3 is connected with the front subframe 1 through a glass fiber plate spring mounting point 14, the rear connecting rod 4 is connected with the front subframe 1 through a rear swing arm mounting point 13, the glass fiber plate spring 3 and the rear connecting rod 4 are connected through the front ball pin seat 7, the front subframe 1 is connected with the vehicle body through a front subframe vehicle body connecting point 12, at this time, the front subframe structure of the miniature electric vehicle is simple in design and low in weight, when a customer purchases the vehicle, if the vehicle needs to improve the vehicle operation stability and comfort, the front cross beam 2, the front connecting rod 5 and the front stabilizer bar 6 can be installed after sale, the first connecting support 11 is arranged on the front subframe 1, the second connecting support 21 matched with the first connecting support 11 is arranged on the front cross beam 2, first linking bridge 11 passes through bolted connection 8 with second linking bridge 21, the both ends of front beam 2 all are provided with front pull rod mounting point 23 and front stabilizer bar installing support 24, front pull rod 5 is connected with front beam 2 through front pull rod mounting point 23, be provided with on the front stabilizer bar 6 with front stabilizer bar mounting point 24 assorted front stabilizer bar installation piece, front stabilizer bar 6 and front beam 2 realize dismantling the connection through front stabilizer bar installation piece and front stabilizer bar mounting point 24, front pull rod 5 and front stabilizer bar 6 are connected through preceding ball round pin seat 7, front beam 2 is connected with the automobile body main part through preceding sub vehicle frame automobile body tie point 12, at this moment, the lateral rigidity of vehicle obtains effectively promoting, braking resistance to point head and the anti pitching performance of drive obtain improving, and then improve the behaviour and stability ability and the comfort performance of vehicle, satisfy customer's demand. Therefore, the differential installation of the front auxiliary frame structure of the miniature electric vehicle is realized.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. The utility model provides a sub vehicle frame structure before miniature electric motor car, its characterized in that, includes preceding sub vehicle frame (1) and front beam (2), be provided with first linking bridge (11) on preceding sub vehicle frame (1), be provided with on front beam (2) with first linking bridge (11) complex second linking bridge (21), first linking bridge (11) with second linking bridge (21) can be dismantled and connect.

2. The front sub-frame structure of the miniature electric vehicle as claimed in claim 1, further comprising a bolt (8), wherein the first connecting bracket (11) and the second connecting bracket (21) are connected by the bolt (8).

3. The front subframe structure of a miniature electric vehicle as claimed in claim 1, further comprising a front pull rod (5) and a front stabilizer bar (6), wherein a front pull rod mounting point (23) and a front stabilizer bar mounting bracket (24) are respectively disposed at two ends of the front cross beam (2), and the front pull rod (5) and the front stabilizer bar (6) are respectively connected with the front cross beam (2) through the front pull rod mounting point (23) and the front stabilizer bar mounting bracket (24).

4. The front sub-frame structure of the miniature electric vehicle as claimed in claim 3, further comprising a glass fiber plate spring (3), a rear connecting rod (4) and a front ball pin seat (7), wherein the glass fiber plate spring (3), the rear connecting rod (4), the front pull rod (5) and the front stabilizer bar (6) are connected through the front ball pin seat (7).

5. The front sub-frame structure of the mini-electric vehicle as claimed in claim 4, wherein the front sub-frame (1) is provided with rear swing arm mounting points (13) at both sides, the front sub-frame (1) is connected with the rear connecting rods (4) through the rear swing arm mounting points (13), the front sub-frame (1) is provided with glass fiber plate spring mounting points (14) at the lower side of the front end, and the front sub-frame (1) is connected with the glass fiber plate spring (3) through the glass fiber plate spring mounting points (14).

6. The front sub-frame structure of the miniature electric vehicle as claimed in claim 1, wherein the rear end of the first connecting bracket (11) is provided with a first welding edge (111), the first connecting bracket (11) is connected with the main body of the front sub-frame (1) through the first welding edge (111), and a first bolt hole (113) is penetratingly arranged on the first connecting bracket (11).

7. The front subframe structure of a miniature electric vehicle as claimed in claim 1, wherein the front end of the second connecting bracket (21) is provided with a second welding edge (211), the second connecting bracket (21) is connected with the main body of the front cross member (2) through the second welding edge (211), and a second bolt hole (213) is penetratingly arranged on the second connecting bracket (21).

8. The front subframe structure of the mini-electric vehicle as claimed in claim 1, wherein four ends of the front subframe (1) are provided with front subframe body connection points (12), two ends of the front cross beam (2) are provided with front cross beam body connection points (22), and the front subframe (1) and the front cross beam (2) are respectively connected with a vehicle body through the front subframe body connection points (12) and the front cross beam body connection points (22).

9. The front subframe structure of a miniature electric vehicle as claimed in claim 1, wherein said first connecting bracket (11) is provided with flanges (112) on both sides.

10. The front subframe structure of a miniature electric vehicle as claimed in claim 1, wherein the upper side of the second connecting bracket (21) is provided with an avoiding concave rib (212), and the lower side of the rear end of the second connecting bracket (21) is provided with a notch (214).

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