CN208393469U - A kind of under(-)chassis and automobile of automobile - Google Patents

Abstract

The utility model discloses a kind of under(-)chassis of automobile and automobile, which includes: two sill strips, and two sill strips extend along the length of wagon direction of the automobile, and the interior side-wall surface connection finite place piece that two sill strips are opposite；Front wall lower beam, the front wall lower beam is connected between two sill strips, and the both ends of the front wall lower beam and the locating part are clamped, to form the limit for preventing the front wall lower beam from moving up and move down in the bodywork height direction of the automobile.The sill strip of the under(-)chassis has locating part, limits connection front wall lower beam by the locating part, to improve the fastness of the bottom frame structure, and the problem for avoiding stress raisers caused by welding, bonding strength low.

Description

A kind of under(-)chassis and automobile of automobile

Technical field

The utility model relates to automobile technical field, in particular to the under(-)chassis and automobile of a kind of automobile.

Background technique

With the development of automobile technical field, the requirement to automobile driving safe is increasingly improved.Vehicle body framework construction is made For one of the important component of vehicle, stability, the fixing of structure directly restrict the performance of automobile.Body of a motor car Under(-)chassis includes sill strip, front wall lower beam, seat front beam and seat rear cross beam, and under(-)chassis needs to provide biggish branch Support force, sill strip and front wall lower beam, seat front beam, the connection between seat rear cross beam need sufficiently tight.

In the prior art, the end face of the inner surface of two sill strips and front wall lower beam, seat front beam in under(-)chassis End face, seat rear cross beam end face be bonded and be welded to connect.When the under(-)chassis of this structure, act on front wall lower beam, The power of seat front beam and seat rear cross beam directly concentrates the inner surface for acting on sill strip and its part that respectively end face is welded, Its bonding strength is weaker, is easy to happen connection unstability, causes the performance of vehicle poor.

Utility model content

The purpose of the utility model is to provide a kind of under(-)chassis of automobile and automobile, the sill strip of the under(-)chassis has Locating part limits connection front wall lower beam by the locating part, to improve the fastness of the bottom frame structure, and avoids welding Caused by the low problem of concentration of local stress, bonding strength.

The utility model provides a kind of under(-)chassis of automobile, comprising:

Two sill strips, two sill strips extend along the length of wagon direction of the automobile, and two thresholds The opposite interior side-wall surface of beam connects finite place piece；

Front wall lower beam, the front wall lower beam are connected between two sill strips, and the front wall lower beam Both ends and the locating part are clamped, and prevent the front wall lower beam from moving up in the bodywork height direction of the automobile to be formed With the limit moved down.

Optionally, the locating part includes:

Inclined-plane is limited, the interior side-wall surface of limit inclined-plane from the sill strip tilts down extension；

Limit bottom surface, the limit bottom surface are connected to the lower edge on the limit inclined-plane and the inner sidewall table of the sill strip Between face.

Optionally, the top edge on the limit inclined-plane is aligned with the roof of the sill strip.

Optionally, the limit bottom surface is parallel with the lower wall of the front wall lower beam and is located at the front wall lower beam Lower wall above.

Optionally, the first tilt angle of inner sidewall of the limit inclined-plane relative to the sill strip is less than the limit Second tilt angle of the inclined-plane relative to the limit bottom surface.

Optionally, first tilt angle is within the scope of 15 °~30 °.

Optionally, the both ends of the front wall lower beam offer gap, and the gap, which has, is overlapped in the limit inclined-plane Faying surface and the bearing surface that is connected to below the limit bottom surface.

Optionally, the locating part extends along the length of wagon direction of the automobile, and the under(-)chassis further wraps It includes:

Seat front beam, after the seat front beam is located at the front wall lower beam on the length of wagon direction Side is simultaneously connected between two sill strips, and the lapping ends of the seat front beam are prevented in the locating part with being formed The limit that the seat front beam moves down in the bodywork height direction；

Seat rear cross beam, after the seat rear cross beam is located at the seat front beam on the length of wagon direction Side is simultaneously connected between two sill strips, and the lapping ends of the seat rear cross beam are prevented in the locating part with being formed The limit that the seat rear cross beam moves down in bodywork height direction.

Optionally, there is the sill strip vehicle-body width direction along automobile to extend and be connected in the sill strip Reinforcing rib between side wall and lateral wall, the top of the seat front beam are higher than the reinforcing rib, the seat rear cross beam Top is lower than the reinforcing rib.

The utility model also provides a kind of automobile, and the automobile includes above-described under(-)chassis.

It can be seen from the above, the utility model provides a kind of under(-)chassis of automobile, two sill strips of the under(-)chassis Inner sidewall connects finite place piece, and the connection position of front wall lower beam, seat front beam and seat rear cross beam is limited by the locating part It sets, front wall lower beam is prevented to be detached from sill strip up and down along bodywork height direction, prevent cross after seat front beam and seat Beam is detached from downwards sill strip along bodywork height direction, in the prior art using welding manner compared with, limit that can be stronger The fixed front wall lower beam in position, seat front beam and seat rear cross beam.Promote stability, the fastness of bottom frame structure.

Detailed description of the invention

The following drawings only does schematic illustration and explanation to the utility model, does not limit the scope of the utility model.

Fig. 1 is the structural schematic diagram of the under(-)chassis in the utility model specific embodiment；

Fig. 2 is the structural schematic diagram of the sill strip in the utility model specific embodiment；

Fig. 3 is the schematic diagram of the sill strip and front wall lower beam connection relationship in the utility model specific embodiment；

Fig. 4 is the schematic diagram of the sill strip and seat front beam connection relationship in the utility model specific embodiment；

Fig. 5 is the schematic diagram of the sill strip and seat rear cross beam connection relationship in the utility model specific embodiment.

Label declaration:

10 under(-)chassis；

11 sill strips；

111 locating parts；

111a limits inclined-plane；

111b limit bottom surface；

112 roofs；

113 bottom walls；

114 reinforcing ribs；

12 front wall lower beams；

121 vertical beams；

121a upper wall；

121b reinforcing beam；

122 horizontal beams；

122a lower wall；

13 seat front beams；

The roof of 13a seat front beam；

14 seat rear cross beams；

The roof of 14a seat rear cross beam；

The first tilt angle of α；

The second tilt angle of β.

Specific embodiment

In order to which the technical features, objects and effects to utility model are more clearly understood, Detailed description of the invention sheet is now compareed The specific embodiment of utility model, identical label indicates identical part in the various figures.

Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.

To make simplified form, only schematically shown in each figure with the utility model relevant portion, and do not represent Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand Component only symbolically depicts one of those, or has only marked one of those.

Structural stability in order to solve the problems, such as under(-)chassis in the prior art is poor, fastness is low, and the utility model mentions Two sill strips are promoted by the optimization to two sill strips and front wall lower beam connection structure for a kind of bottom frame structure It is effectively provided with the bonding strength of front wall lower beam to promote the stability of bottom frame structure, fastness for other component Support.

Referring to Figure 1, shown in Fig. 2 and Fig. 3, Fig. 1 is that the structure of the under(-)chassis in the utility model specific embodiment is shown It is intended to；Fig. 2 is the structural schematic diagram of the sill strip in the utility model specific embodiment；Fig. 3 is the utility model specific implementation The schematic diagram of sill strip and front wall lower beam connection relationship in example.

In a particular embodiment, the utility model provides a kind of under(-)chassis 10 of automobile, which includes two Root sill strip 11 and front wall lower beam 12.

Two sill strips 11 extend along the length of wagon direction of automobile, also, the inner sidewall table that two sill strips 11 are opposite Face connects finite place piece 111, and front wall lower beam 12 is connected between two sill strips 11, also, the both ends of front wall lower beam 12 It is clamped with locating part 111, prevents front wall lower beam 12 from moving up and move down in the bodywork height direction of automobile to be formed Limit.

Compared with the surface of inner sidewall that the both ends of front wall lower beam are directly welded to two sill strips in the prior art, The utility model can limit front wall lower beam 12 in bodywork height direction by the structure of above-mentioned locating part 111, and And while limit front wall lower beam 12 and move up and move down, so that limit front wall lower beam 12 be effectively fixed, promoted The stability of 10 structure of under(-)chassis.

As shown in Figures 2 and 3, the locating part 111 of sill strip 11 includes limit inclined-plane 111a and limit bottom surface 111b, In, the interior side-wall surface of limit inclined-plane 111a from sill strip 11 tilts down extension, and limit bottom surface 111b is connected to limit inclined-plane Between the lower edge of 111a and the interior side-wall surface of sill strip 11.Limit inclined-plane 111a, limit bottom surface 111b and sill strip 11 Interior side-wall surface forms the structure of triangle, so that the support front wall lower beam 12 that locating part 111 is stable and firm.

In a particular embodiment, the top edge for limiting inclined-plane 111a is aligned with the roof 112 of sill strip 11, limit bottom surface 111b is parallel with the lower wall 122a of front wall lower beam 12 and is located at the top of the lower wall 122a of front wall lower beam 12.So set It sets, the overlapping edges of the upper wall 121a of front wall lower beam 12 are in the top edge of limit inclined-plane 111a, to limit front wall lower beam 12 upper wall 121a is moved vertically downward along bodywork height direction, also, also makes the upper wall 121a and door of front wall lower beam 12 The roof 112 of sill beam 11 is parallel.The lower wall 122a of front wall lower beam 12 is located at the lower section of limit bottom surface 111b, thus by under front wall The lower wall 122a limit of crossbeam 12 prevents front wall lower beam 12 along vehicle body height in the lower section of the limit bottom surface 111b of locating part 111 Degree direction moves up.Before upper wall 121a, limit bottom surface the 111b limitation for limiting front wall lower beam 12 by limit inclined-plane 111a The lower wall 122a for enclosing lower beam 12 is formed steady from being connected to front wall lower beam 12 between the locating part 111 of two sill strips 11 Fixed firm connection.

For above-mentioned locating part 111, first inclination angle alpha of the inclined-plane 111a relative to the inner sidewall of sill strip 11 is limited The second inclination angle beta less than limit inclined-plane 111a relative to limit bottom surface 111b, as shown in Figure 3.

First inclination angle alpha is within the scope of 15 °~30 °, in a particular embodiment, as shown in figure 3, the first inclination angle alpha It is 30 °, and the second inclination angle beta is 60 °, limit inclined-plane 111a, limit bottom surface 111b are connected to the inner sidewall of sill strip 11, shape At the locating part 111 of right angled triangle, to provide reliable support for front wall lower beam 12.

It should be noted that " first, second " used herein limits different tilt angles, merely to difference statement The tilt angle of the different location of locating part 111 to the claimed technical solution of the application and does not constitute a limitation.

In a particular embodiment, the length for limiting inclined-plane 111a is 60mm, and the length of limit bottom surface 111b is 30mm.And And the locating part 111 and sill strip 11 are all made of aluminium alloy 6061, are integrally formed by squeezing.

Also, limit inclined-plane 111a, limit bottom surface 111b are connected to the inner sidewall of sill strip 11, surround the limit with cavity Position part 111.So set, locating part 111 uses cavity structure, it on the one hand can reduce the weight of under(-)chassis 10, meet vehicle Light-weighted design requirement；On the other hand, it is capable of forming crumple chamber, the collision transmitted when for absorbing side impact by sill strip 11 Power reduces destruction of the side impact to vehicle body crew module.

As shown in figure 3, the both ends of front wall lower beam 12 offer gap, which, which has, is overlapped in limit inclined-plane 111a's Faying surface and the bearing surface being connected to below limit bottom surface 111b, wherein the gradient of faying surface and limit inclined-plane 111a are kissed It closes, so that faying surface is fitted on limit inclined-plane 111a, and bearing surface is fitted in limit bottom surface 111b in parallel.The gap Shape matches with the outer shape of limit inclined-plane 111a, limit bottom surface the 111b locating part 111 formed, so as to firmly limit Position connection front wall lower beam 12.

In assembly, after the relative position of two sill strips 11 is fixed, front wall lower beam 12 by sill strip 11 front end edge Rear end is inserted between two sill strips 11 backward in length of wagon direction, so that faying surface is under limit inclined-plane 111a guiding to vehicle body Rear be moved to faying surface and be fitted on limit inclined-plane 111a, and bearing surface fitting and along limit bottom surface 111b to vehicle body Rear is moved to the bearing surface and is fitted on limit bottom surface 111b completely.

As shown in figure 3, front wall lower beam 12 includes the vertical beam 121 with cavity, the horizontal beam 122 with cavity, erect Straight beam 121 and horizontal beam 122 connect, and the top of vertical beam 121 and the roof 112 of sill strip 11 are concordant, bottom and horizontal beam 122 top connection is simultaneously concordant with the limit bottom surface 111b of locating part 111, the bottom of horizontal beam 122 and the bottom wall of sill strip 11 113 is concordant.There is the reinforcing beam 121b extended along vehicle-body width direction in the cavity of the vertical beam 121 of the front wall lower beam 12, And there is sill strip 11 vehicle-body width direction along automobile to extend and be connected between the inner sidewall and lateral wall of sill strip 11 Reinforcing rib 114, reinforcing beam 121b are concordant with reinforcing rib 114.So set, front wall lower beam 12 is connected to two sill strips 11 Front end when, reinforcing beam 121b is concordant with reinforcing rib 114, can increase the stability of 10 planform of under(-)chassis.

Referring to figs. 1 and 2, which extends to thereafter along length of wagon direction, by the front end of sill strip 11 End, it is identical as 11 length of sill strip.So set, the locating part 111 further tie by other to be connected between sill strip 11 Structure provides installation limited support.

Specifically, which further comprises seat front beam 13 and seat rear cross beam 14, seat front beam 13 It is located at the rear side of front wall lower beam 12 on length of wagon direction and is connected between two sill strips 11, seat front beam 13 Lapping ends in locating part 111, prevent the limit that moves down in bodywork height direction of seat front beam 13 to be formed.Seat Chair rear cross beam 14 positioned at the rear side of seat front beam 13 and is connected between two sill strips 11, seat on length of wagon direction The lapping ends of chair rear cross beam 14 prevent seat rear cross beam 14 downward on bodywork height direction in locating part 111, to be formed Mobile displacement.

In a particular embodiment, as shown in Figure 4 and Figure 5, the end of seat front beam 13, seat rear cross beam 14 are overlapped on limit On the corresponding position of position inclined-plane 111a, the end face of seat front beam 13, the end face of seat rear cross beam 14 are and limit inclined-plane The inclined-plane that 111a is bonded to each other is stablized so that seat front beam 13, seat rear cross beam 14 and sill strip 11 are realized, is firm Connection.

The locating part 111 of rear end is extended to using the above-mentioned front end by sill strip 11, can be simultaneously front wall lower beam 12, Seat front beam 13 and seat rear cross beam 14 provide installation support, in the prior art by front wall lower beam, seat front beam and The inner sidewall that seat rear cross beam is respectively welded at sill strip is compared, and be can avoid concentration of local stress and is caused connection unstability.

There is the vehicle-body width direction along automobile to extend and be connected to the inner sidewall and lateral wall of sill strip 11 for sill strip 11 Between reinforcing rib 114, the roof 13a of seat front beam 13 is higher than reinforcing rib 114, the roof 14a of seat rear cross beam 14 is lower than Reinforcing rib 114.Seat front beam 13 and seat rear cross beam 14 are the beam of cavity structure, make seat front beam 13 roof 13a, The roof 14a of seat rear cross beam 14 is located at the two sides of reinforcing rib 114, to avoid enhancing locating part 111 this position at intensity, In this way, enabling to the abundant crumple deformation at this position of reinforcing rib 114 and locating part 111 to absorb side when side impact occurs Touch energy.

Two vertical bars are connected between the reinforcing rib 114 and roof 112 of the sill strip 11, a vertical bar is connected to this The middle position of reinforcing rib 114 and roof 112, another vertical bar are connected to three points of 112 outside of reinforcing rib 114 and roof One of place.

Thus above-mentioned each embodiment is it is found that the utility model provides a kind of under(-)chassis 10 of automobile, the under(-)chassis The inner sidewall of 10 two sill strips 11 connects finite place piece 111, limits front wall lower beam 12, seat by the locating part 111 The link position of front beam 13 and seat rear cross beam 14 prevents front wall lower beam 12 to be detached from up and down along bodywork height direction Sill strip 11 prevents seat front beam 13 and seat rear cross beam 14 to be detached from sill strip 11 downwards along bodywork height direction, and existing It is compared in technology using welding manner, the fixed front wall lower beam 12 of limit, seat front beam 13 and seat that can be stronger Rear cross beam 14.Promote stability, the fastness of 10 structure of under(-)chassis.

In addition to above-mentioned under(-)chassis 10, the utility model also provides a kind of automobile, which includes above-mentioned each reality The under(-)chassis 10 in example is applied, since the under(-)chassis 10 has above-mentioned technique effect, the vapour with the under(-)chassis 10 Vehicle also technical effect having the same, refers to above-mentioned elaboration, details are not described herein.

Herein, "one" is not offered as being limited to the quantity of the utility model relevant portion " only this ", and And the situation of "one" quantity " more than one " for not indicating exclusion the utility model relevant portion.

Herein, "upper", "lower", "front", "rear" etc. are only used for indicating the relative positional relationship between relevant portion, and The absolute position of these non-limiting relevant portions.

Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate significance level and sequence and Existing premise etc. each other.

Unless otherwise indicated, numberical range herein not only includes the entire scope in two endpoint, also includes containing In several subranges therein.

Although not each embodiment is only wrapped it should be appreciated that this specification is described according to each embodiment Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art The other embodiments that member is understood that.

Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model Body explanation, and not to limit the protection scope of the utility model, it is all without departing from made by the utility model skill spirit etc. Effect embodiment or change should be included within the scope of protection of this utility model such as the combination, segmentation or repetition of feature.

Claims (10)

1. a kind of under(-)chassis of automobile characterized by comprising

Two sill strips (11), two sill strips (11) extend along the length of wagon direction of the automobile, and described in two The opposite interior side-wall surface of sill strip (11) connects finite place piece (111)；

Front wall lower beam (12), the front wall lower beam (12) is connected between two sill strips (11), and the front wall The both ends and the locating part (111) of lower beam (12) are clamped, and prevent the front wall lower beam (12) in the automobile to be formed The limit that moves up and move down of bodywork height direction.

2. the under(-)chassis of automobile as described in claim 1, which is characterized in that the locating part (111) includes:

It limits inclined-plane (111a), the interior side-wall surface of limit inclined-plane (111a) from the sill strip (11), which tilts down, prolongs It stretches；

Limit bottom surface (111b), the limit bottom surface (111b) are connected to the lower edge and the door of limit inclined-plane (111a) Between the interior side-wall surface of sill beam (11).

3. the under(-)chassis of automobile as claimed in claim 2, which is characterized in that it is described limit inclined-plane (111a) top edge with The roof (112) of the sill strip (11) is aligned.

4. the under(-)chassis of automobile as claimed in claim 3, which is characterized in that the limit bottom surface (111b) and the front wall The lower wall (122a) of lower beam (12) is parallel and is located above the lower wall (122a) of the front wall lower beam (12).

5. the under(-)chassis of automobile as claimed in claim 3, which is characterized in that the limit inclined-plane (111a) is relative to described The first tilt angle (α) of the inner sidewall of sill strip (11) is less than the limit inclined-plane (111a) relative to the limit bottom surface Second tilt angle (β) of (111b).

6. the under(-)chassis of automobile as claimed in claim 5, which is characterized in that first tilt angle (α) 15 °~ Within the scope of 30 °.

7. the under(-)chassis of automobile as claimed in claim 2, which is characterized in that the both ends of the front wall lower beam (12) open up There is gap, the gap has the faying surface for being overlapped in limit inclined-plane (111a) and is connected to the limit bottom surface Bearing surface below (111b).

8. such as the under(-)chassis of the described in any item automobiles of claim 1-7, which is characterized in that the locating part (111) is along institute The length of wagon direction for stating automobile extends, and the under(-)chassis (10) further comprises:

Seat front beam (13), the seat front beam (13) are located at the front wall lower beam on the length of wagon direction (12) rear side is simultaneously connected between two sill strips (11), and the lapping ends of the seat front beam (13) are in described Locating part (111), to form the limit for preventing the seat front beam (13) from moving down in the bodywork height direction；

Seat rear cross beam (14), the seat rear cross beam (14) are located at the seat front beam on the length of wagon direction (13) rear side is simultaneously connected between two sill strips (11), and the lapping ends of the seat rear cross beam (14) are in described Locating part (111), to form the limit for preventing the seat rear cross beam (14) from moving down in bodywork height direction.

9. the under(-)chassis of automobile as claimed in claim 8, which is characterized in that the sill strip (11) has the vehicle along automobile Body width direction extends and is connected to the reinforcing rib (114) between the inner sidewall and lateral wall of the sill strip (11), the seat The roof (13a) of chair front beam (13) is higher than the reinforcing rib (114), the roof (14a) of the seat rear cross beam (14) is lower than The reinforcing rib (114).

10. a kind of automobile, which is characterized in that the automobile includes the described in any item under(-)chassis of claim 1-9 (10).