CN204978889U - Passageway in lightweight car - Google Patents

Abstract

The utility model discloses a passageway in lightweight car, how many fonts the longitudinal section of well passageway is, and the both sides of well passageway are provided with the turn -ups, and the both sides of well passageway are connected with the preceding floor of automobile respectively, well passageway sets up in the top on the preceding floor of both sides, the preceding floor of both sides extend to well passageway middle part respectively and respectively with well passageway vacuole formation, the both sides limit of well passageway respectively with the preceding floor welding that corresponds, the end on preceding floor welds respectively in the middle part of well passageway. The utility model discloses the passageway in lightweight car quality is light, structural strength is high.

Description

Passage in a kind of lightweight automobile

Technical field

The utility model relates to field of car body structure, particularly relates to passage in a kind of lightweight automobile.

Background technology

Along with the development of auto trade, the safety of automobile and lightweight have become the important theme that automobile is researched and developed, and in automobile, channel architecture, as the important component part of vehicle body, relates to the safety of automobile in front, side collision process.Usually in this automobile, channel architecture is comparatively large and complicated, therefore how when ensureing collision safety performance, realizing the lightweight of channel architecture in automobile, will become the challenge that in automobile, channel architecture designs.

In current automobile, the design of passage assembly is generally middle channel body and middle passage strength beam, middle channel body longitudinally arranges (Fig. 1), its cross-sectional plane is " several " font (Fig. 2), middle passage connects front floor by the flange of both sides, described middle passage assembly is made up of middle channel body and 2 ~ 3 brace panels, middle passage and front floor body are linked to be integrally welded, add intensity.When vehicle body generation head-on crash, impact force is delivered to front longitudinal floor beam by chassis runner, then passes to rear floor, and is distributed to whole floor simultaneously, in fact the one that whole floor and middle passage are formed constitutes a big frame, serves crucial effect to dispersancy.When vehicle body generation side collision, impact force passes to before floor and middle passage by threshold, then passes to opposite side floor, and whole floor is carried out the dispersion of power.Simultaneously, described middle passage strength beam increases middle passage assembly cross-sectional height and area, and improve the intensity of middle passage assembly, closed cavity is when frontal crash of vehicles and side collision, there is good directional tagging to the load of collision, improve rigidity and the safety performance of automobile.

But in tradition also there is some shortcoming following in channels designs while there is above-mentioned advantage:

Shortcoming 1: middle passage is too independent, in tradition, passage only welds relation at two side flanging place the three unities with floor, comparatively speaking, junction is still weaker, middle passage and floor are still relatively independently, in the process collided like this, unavoidable intensity is not very sufficient, has the possibility that fracture occurs.Such intensity can not effectivelyly ensure.

Shortcoming 2: in tradition when the design of passage, add strength beam, increase middle passage assembly cross-sectional height and area, improve the intensity of middle passage assembly, closed cavity is when auto against simultaneously, has good directional tagging to the load of collision, improves the safety performance of automobile.But strength beam Thickness Ratio is thicker could meet requirement of strength, the 1.2mm of general thickness design herein, as shown in Figure 3, so just adds the weight of middle passage greatly, also just adds the weight of car load.

Utility model content

For solving the problems of the technologies described above, the utility model provides passage in the lightweight automobile that a kind of quality is lighter, intensity is higher.

The utility model is achieved in that

Passage in a kind of lightweight automobile, the vertical section of described middle passage is a few font, the both sides of middle passage are provided with flange, the both sides of middle passage are connected to the front floor of automobile, the thickness on described front floor is 0.5 ~ 0.8mm, and described middle channel setting is in the top on the front floor of both sides, and the front floor of both sides extends respectively to middle channel middle and forms cavity with middle passage respectively, the dual-side of middle passage respectively with corresponding before floor welded, the end on front floor is welded in middle channel middle respectively.

Further, described front floor comprises front floor main body, front floor front cross rail, front Floor rear crossbeam, and the two ends of described front floor front cross rail and front Floor rear crossbeam are connected to the threshold of automobile and middle passage.

Further, the two ends of described middle passage respectively with corresponding before floor welded, form sealed cavity, described middle passage is provided with the valve inside being communicated in described sealed cavity, and sealed cavity extracts inner air by vacuum extractor, forms negative pressure cavity.

Further, the air pressure in described sealed cavity is lower than 1.01325 × 10^3Pa.

Further, weld and the middle passage on described front floor are fitted, the length of laminating is greater than 3cm, middle passage is provided with corrugated first occlusal surface with joint place, front floor, arrange second occlusal surface corresponding with described first occlusal surface on described front floor, described first occlusal surface and the second occlusal surface are interlocked mutually.

Further, on described front floor, corresponding described sealed cavity place is provided with the corrugated structure reinforcement of horizontal expansion.

Further, the solder joint width at described middle passage and front floor welded place is greater than 5mm.

The beneficial effects of the utility model are: in the utility model lightweight automobile, passage eliminates three brace panels before, during and after middle passage, alleviate the weight of car load, reach car load weight-saving object, simultaneously, described front floor extends respectively to middle channel middle and forms cavity with middle passage respectively, and whole front floor and middle passage have been linked to be one, too increase the intensity on floor, effectively ensure that the intensity and toughness of whole middle passage, ensure the safety of occupant.

Accompanying drawing explanation

Fig. 1 is the connection diagram on middle passage and front floor in prior art;

Fig. 2 is the cross section view of Fig. 1;

Fig. 3 is the section-drawing of middle passage in prior art;

Fig. 4 is the section-drawing of middle passage in the utility model one embodiment;

Fig. 5 is the section-drawing of middle passage in another embodiment of the utility model;

Fig. 6 is the partial enlarged drawing of part A in Fig. 5;

Fig. 7 is the partial enlarged drawing of part B in Fig. 5.

Label declaration:

Passage in 1-; The front floor of 2-; 11,12-welding edge; 3-cavity;

13-valve inside; 14-first occlusal surface; 21-second occlusal surface.

Detailed description of the invention

By describing technology contents of the present utility model, structural attitude in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.

Embodiment one

Passage in a kind of lightweight automobile of the utility model embodiment, refer to Fig. 4, for the section-drawing of passage middle in the utility model embodiment, the vertical section of described middle passage 1 is a few font, the both sides of middle passage 1 are connected to the front floor 2 of automobile, described front floor 2 comprises front floor main body, front floor front cross rail, front Floor rear crossbeam, the thickness of front floor main body is 0.5 ~ 0.8mm, and the two ends of described front floor front cross rail and front Floor rear crossbeam are connected to the threshold of automobile and middle passage.Wherein, front floor 2 is arranged at the below of middle passage 1, described middle passage 1 both sides are provided with flange, the front floor 2 of middle passage both sides is respectively to extending in the middle part of middle passage 1 and forming cavity 3 with middle passage 1 respectively, the dual-side of middle passage 1 welds with corresponding front floor 2 (its welding edge is the welding edge 11 in Fig. 4) respectively, and the end on front floor 2 is welded in the middle part of middle passage 1 (its welding edge is the welding edge 12 in Fig. 4) respectively.

For passage 1 in guarantee and the weld strength on front floor 2, in a more excellent embodiment, the solder joint width at described middle passage and front floor welded place is greater than 5mm.

In the present embodiment, before eliminating passage, in, rear three brace panels, alleviate the weight of car load to a certain extent, reach car load weight-saving object, simultaneously, the front floor of described middle passage both sides extends respectively to middle channel middle and forms cavity with middle passage respectively, the dual-side of middle passage respectively with corresponding before floor welded, the end on front floor is welded in middle channel middle respectively, described middle passage and front floor body is actual defines a frame beam structure, through whole front floor, add the intensity on whole front floor, simultaneously because whole front floor and middle passage have been linked to be one, too increase the intensity on floor.So can the whole intensity and toughness of more effective guarantee in the process collided at automobile, ensure the safety of occupant.

Embodiment two

Refer to Fig. 5, be with embodiment one difference, in the present embodiment, the both ends of described middle passage 1 are welded with corresponding front floor 2 respectively, described cavity 3 is made to form sealed cavity, and be provided with the valve inside 13 being communicated in described sealed cavity on described middle passage 1 or front floor 2, described sealed cavity extracts its inner air by vacuum extractor, form negative pressure cavity.

In the present embodiment, the cavity that described middle passage and front floor are formed is welded into sealed cavity, and extract the air of its inside, form negative pressure cavity, thus utilize atmospheric pressure be used for improve in bulk strength between passage and front floor, in not changing channel architecture improve under also not increasing the prerequisite of any weight in the structural strength of passage.Prove through test, described negative pressure cavity makes middle passage 1 improve 15% ~ 18% with the resistance performance on front floor 2., when the air pressure in described sealed cavity is 1.01325 × 10^3Pa, middle passage 1 improves 18% with the resistance performance on front floor 2; When the air pressure in described sealed cavity is 1.01325 × 10^4Pa, middle passage 1 improves 13% with the resistance performance on front floor 2; When the air pressure in described sealed cavity is 5 × 10^2Pa, middle passage 1 improves 15% with the resistance performance on front floor 2.

Further, incorporated by reference to consulting Fig. 6 and Fig. 7, being the anchoring strength in raising between passage 1 and front floor 2, preventing when broadside impact, relative sliding between middle passage 1 and front floor 2.The weld on described front floor 2 (namely in Fig. 5 near welding edge 11 and 12) is fitted with middle passage 1, preferably, the length of laminating is greater than 3cm, and, middle passage 1 is provided with corrugated first occlusal surface 14 with joint place, front floor 2, arrange second occlusal surface 21 corresponding with described first occlusal surface on described front floor 2, described first occlusal surface and the second occlusal surface are interlocked mutually; Further, on described front floor, corresponding described sealed cavity place is provided with the corrugated structure reinforcement of horizontal expansion.

Due to the cavity that described middle passage 1 and the cavity 3 surrounded described in front floor 2 are negative pressure, under the effect of atmospheric pressure, together with fitting tightly in joint place on middle passage 1 and front floor 2, so make the first occlusal surface 14 and the second occlusal surface being interlocked tightly, thus substantially increase the anchoring strength on middle passage 1 and front floor 2.In the present embodiment, described middle passage 1 and front floor 2 are by means of only being welded to connect, atmospheric pressure is also utilized to combine with waveform occlusal surface the Joint strenght improved between the two, thus in further increasing under the prerequisite increasing any structure and weight the structural strength of passage, realize the effect of more lightweight, high strength.

The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification sheets and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (7)

1. passage in a lightweight automobile, it is characterized in that, the vertical section of described middle passage is a few font, the both sides of middle passage are provided with flange, the both sides of middle passage are connected to the front floor of automobile, the thickness on described front floor is 0.5 ~ 0.8mm, described middle channel setting is in the top on the front floor of both sides, the front floor of both sides extends respectively to middle channel middle and forms cavity with middle passage respectively, the dual-side of middle passage respectively with corresponding before floor welded, the end on front floor is welded in middle channel middle respectively.

2. passage in lightweight automobile according to claim 1, it is characterized in that, described front floor comprises front floor main body, front floor front cross rail, front Floor rear crossbeam, and the two ends of described front floor front cross rail and front Floor rear crossbeam are connected to the threshold of automobile and middle passage.

3. passage in lightweight automobile according to claim 1, it is characterized in that, the two ends of described middle passage respectively with corresponding before floor welded, form sealed cavity, described middle passage is provided with the valve inside being communicated in described sealed cavity, sealed cavity extracts inner air by vacuum extractor, forms negative pressure cavity.

4. passage in lightweight automobile according to claim 3, it is characterized in that, the air pressure in described sealed cavity is lower than 1.01325 × 10^3Pa.

5. passage in the lightweight automobile according to claim 3 or 4, it is characterized in that, weld and the middle passage on described front floor are fitted, the length of laminating is greater than 3cm, middle passage is provided with corrugated first occlusal surface with joint place, front floor, arrange second occlusal surface corresponding with described first occlusal surface on described front floor, described first occlusal surface and the second occlusal surface are interlocked mutually.

6. passage in lightweight automobile according to claim 5, is characterized in that, on described front floor, corresponding described sealed cavity place is provided with the corrugated structure reinforcement of horizontal expansion.

7. passage in lightweight automobile according to claim 1, is characterized in that, the solder joint width at described middle passage and front floor welded place is greater than 5mm.