CN201120906Y - Front auxiliary bicycle frame of vehicle - Google Patents

Abstract

The utility model provides an automobile front sub car frame applied in the field of the automobile loading type car body. A sub car frame upper body I (1), a sub car frame upper body II (2), a sub car frame upper body I (5) and a sub car frame upper body II (7) are connected together through respective edge parts, thus forming the enclosed type automobile front sub car frame the inner part of which adopts an empty cavity structure, and the convex or concave structures of the sub car frame upper body I (1), the sub car frame upper body II (2), the sub car frame upper body I (5) and the sub car frame upper body II (7) extend to the inner part of the sub car frame and are mutually connected. The automobile front sub car frame adopting the technical proposal of the utility model can enhance the anti-bending shearing stress intensity and the torsion resistant intensity on the condition that the identical bent direct stress is met. Moreover, the technical proposal of the utility model divides the sub car frame into four parts for processing, namely being convenient for stamping and molding.

Description

A kind of vehicle fore sub frame

Technical field:

The utility model relates to vehicle self-supporting body field, more particularly relates to a kind of vehicle chassis fore sub frame.

Background technology:

At present, fore sub frame on the automobile mainly contains two kinds of structures, a kind of is the fore sub frame that is stamped to form by steel plate, and fore sub frame upper body and lower body constitute the fore sub frame of cavity by welding manner, the parts that are connected with other devices of setting and car body also on fore sub frame.The major advantage of the fore sub frame of this structure is that required welding tooling is few, and welding process is simple, guarantees easily the conformability of processing, suitable production in enormous quantities in enormous quantities, but because this fore sub frame inside is cavity structure, so its load-carrying capacity and bending strength are limited; Another kind of fore sub frame is the pipe girder structure, and this fore sub frame adopts steel tube bending, forms osed top frame-type framework by various welding processs.For satisfying the matching requirements of other associated components, the fore sub frame of this structure also can add some panel beating supports of weldering on vehicle frame, the major advantage of the fore sub frame of this form is that technology is simple, compact conformation, area occupied is little, and welding capacity is few, is easy to carry out Transform Type design, its shortcoming is that the elastic deformation of material is bigger, and forming accuracy is difficult to guarantee.This fore sub frame since on support body captive joint an arc pipe and the not high defective of original intensity is remedied to some extent, but its overall construction intensity still is difficult to satisfy the vehicle operation requirement.

The utility model content:

The utility model provides a kind of vehicle fore sub frame, its objective is: provide that a kind of bearing capacity is strong, rigidity is high, be convenient to punch forming, structure is comparatively simple, and widely applicable vehicle fore sub frame, thereby improves the reliability of vehicle performance.

In order to address the above problem, the general plotting of the technical scheme that the utility model is taked is:

A kind of vehicle fore sub frame, comprise: the subframe upper body, the subframe lower body, it is characterized in that: described subframe upper body and subframe lower body are combined by the sheet metal member more than two or two respectively, each sheet metal member all is set to fitfull projection or recessed structure, and each sheet metal member links together and forms the vehicle fore sub frame.

Described fore sub frame is by subframe upper body I, subframe upper body II, and subframe lower body I, four sheet metal members of subframe lower body II are formed.

Described subframe upper body I, subframe upper body II, subframe lower body I, subframe lower body II links together by position, edge separately, thereby forms the vehicle fore sub frame that case type inside is cavity.

Described subframe upper body I, subframe upper body II, subframe lower body I, the projection of subframe lower body II or recessed structure are at the subframe internal connection.

Described subframe upper body I is connected with subframe upper body II, the extensibility of structure of subframe lower body I is to the inner chamber of subframe lower body II and subframe upper body II, the intermediate projections part of subframe lower body I is connected with subframe upper body I and subframe upper body II, the recessed part of subframe lower body I is connected with subframe lower body II, the edge part of subframe lower body I is connected respectively with subframe upper body I and subframe upper body II, subframe upper body I, subframe upper body II, subframe lower body I, it is four fitfull square structures that four panel beatings of subframe lower body II are formed the cross section, middle part.

Described subframe carries out the transition to each irregular square structure of one of two ends along the cross sectional shape of car load left and right directions gradually by four square tubular structures of middle part.

Described fore sub frame is provided with plurality of strengthening ribs by the middle part of the fore sub frame lower body that subframe lower body I and subframe lower body II form.

Adopt the vehicle fore sub frame of the technical solution of the utility model, traditional relatively steel plate type or pipe beam type subframe, under the condition that satisfies same bending normal stresses intensity, strengthened its counter-bending shearing stress intensity and torsional strength, and, the automobile front subframe of employing the technical solution of the utility model is divided into four parts with main body of vehicle frame and processes, both be convenient to punch forming, be convenient to optimizing and revising of structure again, in addition, this subframe structure is comparatively compact, so space availability ratio height, be easy to other system is arranged that applicable surface is comparatively extensive, brought very big improvement for the production and the processing of car chassis.

Description of drawings:

Do briefly bright to each width of cloth accompanying drawing in this specification sheets expressed content and the mark among the figure below:

Fig. 1 is the Facad structure scheme drawing of a kind of vehicle fore sub frame of the utility model;

Fig. 2 is the structure scheme drawing of a kind of vehicle fore sub frame of the utility model;

Fig. 3 is the middle part A-A schematic cross-section of a kind of automobile front subframe shown in Figure 1;

Be labeled as among the figure: 1, subframe upper body I; 2, subframe upper body II; 3, front frame; 4, boss; 5, subframe lower body I; 6, bearing; 7, subframe lower body II; 8, subframe upper body; 9, subframe lower body; 10, reinforced rib.

The specific embodiment:

Contrast accompanying drawing below, by description, the effect of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and principle of work etc. are described in further detail embodiment.

A kind of vehicle fore sub frame, comprise: subframe upper body 8, subframe lower body 9, described subframe upper body 8 and subframe lower body 9 are combined by the sheet metal member more than two or two respectively, each sheet metal member all is set to fitfull projection or recessed structure, and each sheet metal member links together and forms the inner vehicle fore sub frame of cavity structure that is.

Described fore sub frame is by subframe upper body I1, subframe upper body II2, and subframe lower body I5, four sheet metal members of subframe lower body II7 are formed.

Described subframe upper body I1, subframe upper body II2, subframe lower body I5, subframe lower body II7 links together by position, edge separately, thereby forms the vehicle fore sub frame that case type inside is cavity.

Described subframe upper body I1, subframe upper body II2, subframe lower body I5, the projection of subframe lower body II7 or recessed structure are at the subframe internal connection.

Described subframe upper body I1 is connected with subframe upper body II2, the extensibility of structure of subframe lower body I5 is to the inner chamber of subframe lower body II7 and subframe upper body II2, the intermediate projections part of subframe lower body I5 is connected with subframe upper body I1 and subframe upper body II2, the recessed part of subframe lower body I5 is connected with subframe lower body II7, the edge part of subframe lower body I5 is connected respectively with subframe upper body I1 and subframe upper body II2, subframe upper body I1, subframe upper body II2, subframe lower body I5, it is four fitfull square structures that four panel beatings of subframe lower body II7 are formed the cross section, middle part.

Described subframe carries out the transition to each irregular square structure of one of two ends along the cross sectional shape of car load left and right directions gradually by four square tubular structures of middle part.

According to formula ${\mathrm{\σ}}_{\max }=\frac{M_{\max }}{W_Z}\≤\left[\mathrm{\σ}\right]$ As can be seen, under stressing conditions unmodified condition, (be maximal bending moment M _MaxOne timing), improve the load-carrying capacity of fore sub frame, can only be by adjusting its cross sectional shape, to improve bending resistant section coefficient W _Z

The fore sub frame of the utility model structure, just be based on this theory, by adjusting, optimize the structure of four big sheet metal components, by subframe upper body I1, subframe upper body II2, subframe lower body I5, the extensibility of structure of subframe lower body II7 arrives inside each other, and is connected with its surface, traditional relatively steel plate type or pipe beam type subframe, under the condition that satisfies same bending normal stresses intensity, strengthened the counter-bending shearing stress intensity and the torsional strength of subframe.

Described fore sub frame is provided with plurality of strengthening ribs 10 by the middle part of the fore sub frame lower body 9 that subframe lower body I5 and subframe lower body II7 form.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above, but specific implementation of the present utility model is not subjected to the restriction of aforesaid way.As long as adopted the improvement of the various unsubstantialities that design of the present utility model and technical scheme carry out, or design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model without improving.

Claims (7)

1, a kind of vehicle fore sub frame, comprise: subframe upper body (8), subframe lower body (9), it is characterized in that: described subframe upper body (8) and subframe lower body (9) are combined by the sheet metal member more than two or two respectively, each sheet metal member all is set to fitfull projection or recessed structure, and each sheet metal member links together and forms the vehicle fore sub frame.

2, according to the described a kind of vehicle fore sub frame of claim 1, it is characterized in that: described fore sub frame is by subframe upper body I (1), subframe upper body II (2), and subframe lower body I (5), (7) four sheet metal members of subframe lower body II are formed.

3, according to the described a kind of vehicle fore sub frame of claim 1, it is characterized in that: subframe upper body I (1), subframe upper body II (2), subframe lower body I (5), subframe lower body II (7) links together by position, edge separately, thereby forms the vehicle fore sub frame that case type inside is cavity.

4, according to the described a kind of vehicle fore sub frame of claim 1, it is characterized in that: described subframe upper body I (1), subframe upper body II (2), subframe lower body I (5), projection or the recessed structure of subframe lower body II (7) are connected to each other in subframe inside.

5, according to the described a kind of vehicle fore sub frame of claim 4, it is characterized in that: described subframe upper body I (1) is connected with subframe upper body II (2), the extensibility of structure of subframe lower body I (5) is to the inner chamber of subframe lower body II (7) with subframe upper body II (2), the intermediate projections part of subframe lower body I (5) is connected with subframe upper body I (1) and subframe upper body II (2), the recessed part of subframe lower body I (5) is connected with subframe lower body II (7), the edge part of subframe lower body I (5) is connected respectively with subframe upper body I (1) and subframe upper body II (2), subframe upper body I (1), subframe upper body II (2), subframe lower body I (5), it is four fitfull square structures that (7) four panel beatings of subframe lower body II are formed the cross section, middle part.

6, according to the described a kind of vehicle fore sub frame of claim 4, it is characterized in that: described subframe carries out the transition to each irregular square structure of one of two ends along the cross sectional shape of car load left and right directions gradually by four square tubular structures of middle part.

7, according to the described a kind of vehicle fore sub frame of claim 1, it is characterized in that: the middle part of the described fore sub frame lower body of being made up of subframe lower body I (5) and subframe lower body II (7) (9) is provided with plurality of strengthening ribs (10).

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