CN218703470U - Lower vehicle body bottom beam and vehicle - Google Patents

Abstract

The embodiment of the application provides a lower vehicle body bottom beam and vehicle, lower vehicle body bottom beam is used for the vehicle, including two longerons and two piece at least crossbeams, longeron integrated into one piece has improved the intensity and the rigidity of longeron, has promoted the manufacturing efficiency of longeron simultaneously. The crossbeam integrated into one piece has improved the intensity and the rigidity of crossbeam, has promoted the manufacturing efficiency of crossbeam simultaneously. Two longerons extend the shaping and set up side by side along the second direction along the first direction for support the vehicle in the both sides of second direction, leave the space between two longerons, be used for placing many crossbeams. And the plurality of cross beams extend and form along the second direction and are arranged side by side along the first direction and are used for supporting the vehicle between the two longitudinal beams. The longitudinal beam and the cross beam are connected in a tailor welding mode, so that no lap welding point exists at the joint of the longitudinal beam and the cross beam, and the connection strength and rigidity of the cross beam and the longitudinal beam are improved. The forming mode and the connecting mode improve the integral strength and rigidity of the bottom beam of the lower vehicle body, and ensure the safety performance of the vehicle body.

Description

Lower vehicle body bottom beam and vehicle

Technical Field

The application relates to the field of automobiles, in particular to a lower vehicle body bottom beam and a vehicle.

Background

With the increasing popularization of vehicles, people have higher and higher requirements on the safety of the vehicles. In the related art, structures such as longitudinal beams and cross beams are provided at the bottom of a vehicle body to support the vehicle body.

The longitudinal beam structure is generally formed by stamping a plurality of longitudinal beams, and the forming mode causes more loss of strength and rigidity of the whole longitudinal beam. The longitudinal beams and the cross beams are connected through spot welding. The connection mode leads the joint strength and rigidity loss of the longitudinal beam and the transverse beam at the lap joint part to be more, leads the strength and rigidity of the whole bottom beam to be lower, and can not ensure the safety performance of the vehicle body.

SUMMERY OF THE UTILITY MODEL

In view of prior art's not enough, this application aim at provides a body bottom beam and vehicle down, aims at solving among the prior art bottom beam's intensity and rigidity are lower, can't guarantee the problem of the security performance of automobile body.

An embodiment of the first aspect of this application provides a lower body bottom beam for the vehicle, lower body bottom beam includes:

the longitudinal beams are integrally formed, extend along a first direction and are arranged side by side along a second direction;

the transverse beams are integrally formed, extend along the second direction, are formed and connected between the two longitudinal beams, and are arranged side by side along the first direction, and the first direction is intersected with the second direction;

wherein, the longitudinal beam is connected with the cross beam in a tailor welding way.

According to the aforesaid any embodiment of the first aspect of this application, longeron includes connecting portion, connecting portion and longeron integrated into one piece to the protrusion sets up in the side surface of longeron, and connecting portion extend the shaping by one of them longeron towards another longeron, and connecting portion and crossbeam tailor-welded joint are connected.

According to any of the embodiments of the first aspect of the present application, at least one of the longitudinal beams and the transverse beams has a U-shaped cross section and includes two opposite side walls, a bottom wall connected between the two side walls, and an inner space enclosed by the side walls and the bottom wall.

According to any one of the embodiments of the first aspect of the present application, the longitudinal beams and the cross beams are both U-shaped in cross section, and the inner spaces of the longitudinal beams and the cross beams are communicated with each other.

According to any one of the embodiments of the first aspect of the present application, the side walls of the longitudinal beams are connected with the side walls of the cross beams by tailor welding; and/or the bottom wall of the longitudinal beam is connected with the bottom wall of the cross beam in a tailor welding manner.

According to any one of the foregoing embodiments of the first aspect of the present application, the cross beam includes first flanges connected to the side walls, the first flanges of two adjacent cross beams extend toward the other one, and the first flanges are provided with protrusions spaced apart from each other along the second direction.

According to any one of the previous embodiments of the first aspect of the present application, the longitudinal beam includes a second flange connected to each of the side walls, and at least a portion of the first flange and the second flange are joined by tailor welding.

According to any one of the foregoing embodiments of the first aspect of the present application, the two cross beams include a first cross beam and a second cross beam, the first cross beam is disposed near the middle of the longitudinal beam in the first direction, the second cross beam is disposed near the end of the longitudinal beam in the first direction, the longitudinal beam is bent and formed along the third direction along the direction from the first cross beam to the second cross beam, and the third direction intersects with both the first direction and the second direction.

In accordance with any one of the preceding embodiments of the first aspect of the present application, one of the cross-members includes a plurality of ribs spaced apart along the second direction.

An embodiment of a second aspect of the present application provides a vehicle including the lower body bottom rail of any of the above embodiments.

According to this application embodiment's lower body bottom beam for the vehicle, lower body bottom beam includes two longerons and two piece at least crossbeams, longeron integrated into one piece, has improved the intensity and the rigidity of longeron, has promoted the manufacturing efficiency of longeron simultaneously. The crossbeam integrated into one piece has improved the intensity and the rigidity of crossbeam, has promoted the manufacturing efficiency of crossbeam simultaneously. Two longerons extend the shaping and set up side by side along the second direction along the first direction for support the vehicle in the both sides of second direction, leave the space between two longerons, be used for placing many crossbeams. And the cross beams extend and form along the second direction and are arranged side by side along the first direction and are used for supporting the vehicle between the two longitudinal beams. The longitudinal beam and the cross beam are connected in a tailor welding mode, so that no lap welding point exists at the joint of the longitudinal beam and the cross beam, and the connection strength and rigidity of the cross beam and the longitudinal beam are improved. The forming mode and the connecting mode improve the integral strength and rigidity of the bottom beam of the lower vehicle body, and ensure the safety performance of the vehicle body.

Drawings

Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings, in which like or similar reference characters refer to the same or similar parts.

FIG. 1 is a schematic structural view of a lower vehicle body bottom beam provided by an embodiment of the present application;

FIG. 2 is a schematic structural view of a lower body bottom rail provided in an embodiment of the present application from another perspective;

FIG. 3 is an enlarged view of a portion of the beam of FIG. 1;

fig. 4 is a schematic structural diagram of a lower vehicle body bottom beam provided in an embodiment of the present application at a further viewing angle.

Description of reference numerals:

10. a lower body bottom rail;

100. a longitudinal beam; 110. a connecting portion; 120. a side wall; 130. a bottom wall; 140. second turned-over edge

200. A cross beam; 201. a first cross member; 202. a second cross member; 210. a side wall; 220. a bottom wall; 230. a first flanging; 231. a convex portion; 240. reinforcing ribs;

x, a first direction; y, a second direction; z, third direction.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

With the rapid development of the automobile industry, automobiles have become one of indispensable vehicles for people to go out. The quantity of automobiles kept increases year by year, and with the increasing popularity of automobiles, the manufacturing and design of automobile parts bring about rapid development.

Along with the continuous popularization of electric automobiles in life, the performance of electric automobile parts is also more and more valued by people.

In order to ensure the safety performance of the vehicle body, a cross beam and a longitudinal beam structure are arranged at the bottom of the lower vehicle body. In the correlation technique, longeron and crossbeam structure generally are the punching press of multistage longeron to through the overlap joint form through spot welding welded connection, owing to adopt this kind of form, make whole longeron more at overlap joint department joint strength and rigidity loss, whole longeron is unfavorable for spare part integration owing to need use the punching press of multistage panel simultaneously, thereby leads to the manufacturing efficiency to reduce.

In order to solve the above problem, the lower body underbeam 10 and the vehicle of the embodiment of the present application are proposed. For a better understanding of the present invention, the lower body sill 10 of the embodiment of the present application will be described in detail with reference to fig. 1 to 4.

Referring to fig. 1, fig. 1 is a schematic structural view of a lower vehicle body bottom beam according to an embodiment of the present application.

The lower body bottom beam 10 provided by the embodiment of the application is used for a vehicle, the lower body bottom beam 10 comprises two longitudinal beams 100 and at least two cross beams 200, the longitudinal beams 100 are integrally formed, the longitudinal beams 100 are formed by extending along a first direction X, and the two longitudinal beams 100 are arranged side by side along a second direction Y; the cross beams 200 are integrally formed, the cross beams 200 extend along the second direction Y and are connected between the two longitudinal beams 100, at least two cross beams 200 are arranged side by side along the first direction X, and the first direction X is intersected with the second direction Y; wherein, the longitudinal beam 100 is connected with the transverse beam 200 by tailor welding.

The first direction X is the longitudinal direction of the vehicle, and the second direction Y is the width direction of the vehicle.

According to the lower body bottom beam 10 of the embodiment of the application, the lower body bottom beam 10 is used for a vehicle, the lower body bottom beam 10 comprises two longitudinal beams 100 and at least two cross beams 200, the longitudinal beams 100 are integrally formed, the strength and the rigidity of the longitudinal beams 100 are improved, and meanwhile the manufacturing efficiency of the longitudinal beams 100 is improved. The cross beam 200 is integrally formed, so that the strength and rigidity of the cross beam 200 are improved, and the manufacturing efficiency of the cross beam 200 is improved. Two longerons 100 extend the shaping and set up side by side along second direction Y along first direction X for support the vehicle in the both sides of second direction Y, leave the space between two longerons 100, be used for placing many crossbeams 200. The plurality of cross members 200 are formed to extend in the second direction Y and arranged side by side in the first direction X, and are used to support the vehicle between the two longitudinal members 100. The longitudinal beams 100 and the transverse beams 200 are connected in a tailor welding manner, so that no overlapping welding spot exists at the connection part of the longitudinal beams 100 and the transverse beams 200, and the connection strength and rigidity of the transverse beams 200 and the longitudinal beams 100 are improved. The forming mode and the connecting mode improve the integral strength and rigidity of the lower vehicle body bottom beam 10 and ensure the safety performance of the vehicle body.

As shown in fig. 1, in some alternative embodiments, the longitudinal beams 100 include connecting portions 110, the connecting portions 110 are integrally formed with the longitudinal beams 100 and are disposed to protrude from side surfaces of the longitudinal beams 100, the connecting portions 110 are formed by extending from one longitudinal beam 100 to the other longitudinal beam 100, and the connecting portions 110 are connected to the cross beam 200 in a tailor-welded manner.

In these alternative embodiments, the connecting portion 110 protrudes from the side surface of one longitudinal beam 100 toward the other longitudinal beam 100, and the longitudinal beam 100 and the cross beam 200 are excessively connected at the connecting portion 110, so that the side surface of the longitudinal beam 100 is prevented from being directly connected with the cross beam 200, and the loss of strength and rigidity is reduced. The connecting portion 110 is connected with the cross beam 200 in a tailor welding mode, so that no lap welding point exists at the connecting portion of the longitudinal beam 100 and the cross beam 200, and the connecting strength and rigidity of the cross beam 200 and the longitudinal beam 100 are improved.

Optionally, the connecting portion 110 is integrally formed with the longitudinal beam 100, so that the strength and rigidity of the longitudinal beam 100 at the position of the connecting portion 110 are improved, and the manufacturing efficiency of the longitudinal beam 100 is improved. The forming mode and the connecting mode improve the integral strength and rigidity of the lower vehicle body bottom beam 10 and ensure the safety performance of the vehicle body.

Referring to fig. 2, fig. 2 is a schematic structural view of a bottom beam of a lower vehicle body provided in an embodiment of the present application from another view angle.

In some alternative embodiments, at least one of the longitudinal beams 100 and the transverse beams 200 has a U-shaped cross section and includes two opposite side walls, a bottom wall connected between the two side walls, and an inner space enclosed by the side walls and the bottom wall.

In these alternative embodiments, the cross section of the longitudinal beam 100 or the transverse beam 200 has a U-shaped inner space for fitting with a convex portion on the lower body floor, so that the longitudinal beam 100 or the transverse beam 200 is tightly fitted with the lower body floor, the structure is stable, the supporting capability of the longitudinal beam 100 or the transverse beam 200 is improved, and the material consumption of the longitudinal beam 100 and the transverse beam 200 is reduced by fitting the inner space with the convex portion, so that the weight of the longitudinal beam 100 and the transverse beam 200 is reduced.

In some alternative embodiments, the longitudinal beams 100 and the transverse beams 200 are U-shaped in cross section, and the inner spaces of the longitudinal beams 100 and the transverse beams 200 communicate with each other.

In these optional embodiments, the longitudinal beam 100 and the transverse beam 200 both have U-shaped inner spaces and are communicated with each other, so that the longitudinal beam 100 and the transverse beam 200 can be attached to the convex portions of the bottom plate at one time, the longitudinal beam 100 and the transverse beam 200 are closely attached to the bottom plate of the lower vehicle body, the longitudinal beam 100 and the transverse beam 200 are both attached to the convex portions of the bottom plate, the longitudinal beam 100 and the transverse beam 200 are uniformly supported by the bottom plate, the longitudinal beam 100 and the transverse beam 200 are structurally more stable, and the supporting capability of the longitudinal beam 100 and the transverse beam 200 is further improved.

As shown in fig. 2, in some alternative embodiments, the side walls 130 of the longitudinal beams 100 are connected with the side walls 210 of the transverse beams 200 by tailor welding; and/or the bottom wall 130 of the longitudinal beam 100 is connected with the bottom wall 220 of the transverse beam 200 by tailor welding.

In these alternative embodiments, the side walls 120 of the longitudinal beams 100 are connected with the side walls 210 of the transverse beams 200 in a tailor welding manner, so that the joints of the side walls 120 of the longitudinal beams 100 and the side walls 210 of the transverse beams 200 have no lap welding points, and the joint strength and rigidity of the joints of the side walls 120 of the longitudinal beams 100 and the side walls 210 of the transverse beams 200 are improved. The bottom wall 130 of the longitudinal beam 100 is connected with the bottom wall 220 of the cross beam 200 in a tailor welding mode, so that no overlap welding point exists at the connecting position of the bottom wall 130 of the longitudinal beam 100 and the bottom wall 220 of the cross beam 200, and the connecting strength and rigidity of the connecting position of the bottom wall 130 of the longitudinal beam 100 and the bottom wall 220 of the cross beam 200 are improved. The connection mode improves the integral strength and rigidity of the lower vehicle body bottom beam 10, and ensures the safety performance of the vehicle body.

With continued reference to fig. 1 and 3, in some alternative embodiments, the cross beam 200 includes first flanges 230 connected to the side walls 210, the first flanges 230 of one of the two adjacent cross beams 200 extend toward the other, and the first flanges 230 are provided with protrusions 231 spaced apart along the second direction Y.

In these alternative embodiments, the first flange 230 is disposed on the cross beam 200, and when the cross beam 200 is disposed on the bottom plate, the first flange 230 increases the contact area between the cross beam 200 and the bottom plate, so that the structure of the cross beam 200 is more stable, and the supporting capability of the cross beam 200 is further improved. The first flanging 230 is provided with convex parts 231 distributed at intervals along the second direction Y, and the convex parts 231 on the first flanging 230 are attached to the convex parts on the bottom plate of the lower vehicle body, so that the first flanging 230 is closely attached to the bottom plate, the longitudinal beam 100 and the cross beam 200 are more stable in structure, and the supporting capability of the longitudinal beam 100 and the cross beam 200 is further improved.

In some alternative embodiments, the stringer 100 includes a second flange 140 connected to each sidewall 120, and at least a portion of the first flange 230 and the second flange 140 are joined by a tailor weld.

In these alternative embodiments, the second flange 140 is disposed on the longitudinal beam 100, and when the longitudinal beam 100 is disposed on the bottom plate, the second flange 140 increases the contact area between the longitudinal beam 100 and the bottom plate, so that the structure of the longitudinal beam 100 is more stable, and the support capability of the longitudinal beam 100 is further improved. The first flanging 230 and the second flanging 140 are connected in a tailor welding manner, so that no lap welding point exists at the joint of the second flanging 140 of the longitudinal beam 100 and the first flanging 230 of the transverse beam 200, and the connection strength and rigidity of the joint of the second flanging 140 of the longitudinal beam 100 and the first flanging 230 of the transverse beam 200 are improved. The connection mode improves the integral strength and rigidity of the lower vehicle body bottom beam 10, and ensures the safety performance of the vehicle body.

Referring to fig. 1 and fig. 4 together, fig. 4 is a schematic structural view of a bottom beam of a lower vehicle body provided in an embodiment of the present application from another view angle.

In some alternative embodiments, the two cross beams 200 include a first cross beam 201 and a second cross beam 202, the first cross beam 201 is disposed near a middle portion of the longitudinal beam 100 in the first direction X, and the second cross beam 202 is disposed near an end portion of the longitudinal beam 100 in the first direction X, and along a direction from the first cross beam 201 to the second cross beam 202, the longitudinal beam 100 is bent and formed along a third direction Z, and the third direction Z intersects with both the first direction X and the second direction Y.

In these optional embodiments, the first cross beam 201 is disposed near the middle of the longitudinal beams 100 in the first direction X, so that the two longitudinal beams 100 are relatively fixedly connected in the middle of the first direction X through the first cross beam 201, the structural stability of the longitudinal beams 100 and the cross beam 200 is improved, and the cross beam 200 is located in the middle, so that the structural stability of the parts of the longitudinal beams 100 located on the two sides of the cross beam 200 in the first direction X is similar, and the overall safety performance of the lower vehicle body bottom beam 10 is ensured. The second cross member 202 is disposed near the end of the longitudinal member 100 in the first direction X, so that the end positions of the two longitudinal members 100 in the first direction X are relatively fixedly connected by the first cross member 201, and the structural stability of the end of the longitudinal member 100 is further improved. The stability of the middle part and the end part of the lower vehicle body bottom beam 10 in the first direction X can be ensured, and the overall safety performance is obviously improved. The longitudinal beam 100 is bent and formed along the third direction Z and matched with the radian design of the bottom of the lower vehicle body, so that the longitudinal beam 100 is matched with the shape of the bottom of the lower vehicle body, the longitudinal beam 100 is tightly attached to the bottom plate, the structure of the longitudinal beam 100 is more stable, and the supporting capacity of the longitudinal beam 100 is further improved.

With continued reference to fig. 1, in some alternative embodiments, one of the cross beams 200 includes a plurality of ribs 240, and the plurality of ribs 240 are spaced apart along the second direction Y.

In these alternative embodiments, the cross beam 200 is provided with a plurality of reinforcing ribs 240 distributed at intervals, so as to increase the strength and rigidity of the cross beam 200, and after the strength and rigidity of the cross beam 200 are improved, because the cross beam 200 connects the two longitudinal beams 100, the overall strength and rigidity of the lower vehicle body bottom beam 10 are improved, and further the safety performance of the vehicle body is ensured.

Optionally, the reinforcing rib 240 is formed by a downward depression of the bottom wall surface of the cross beam 200, and other materials are not additionally used and attached to the surface of the cross beam 200, so that the material consumption is saved, and the cost is reduced.

The lower body bottom beam 10 supports all parts of the lower body, and can play a role in force transmission, so that the safety performance of the lower body is ensured.

In addition, the lower body bottom beam 10 is also used for connecting various components, in some optional embodiments, a plurality of mounting holes are arranged on the longitudinal beam 100 and the transverse beam 200 at intervals, the components are connected and integrated on the longitudinal beam 100 and the transverse beam 200 through the mounting holes, the longitudinal beam 100 and the transverse beam 200 are integrally arranged, and after the components are integrated on the longitudinal beam 100 and the transverse beam 200, the stability is ensured, and the safety performance of the lower body is improved.

In any of the above embodiments, the integral forming process may be casting integral forming, stamping integral forming, or turning integral forming. The materials of all parts can be selected from aluminum alloy and other materials with high hardness and light weight.

Embodiments of the second aspect of the present application also provide a vehicle including the lower body underbeam 10 of any of the embodiments of the first aspect. Since the vehicle according to the embodiment of the present application includes the lower body bottom beam 10 according to any one of the embodiments, the vehicle according to the embodiment of the present application has the beneficial effects of the lower body bottom beam 10 according to any one of the embodiments, and details are not repeated herein.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. A lower body floor beam for a vehicle, the lower body floor beam comprising:

the longitudinal beams are integrally formed, the longitudinal beams extend and are formed along a first direction, and the two longitudinal beams are arranged side by side along a second direction;

the transverse beams are integrally formed, extend along the second direction and are connected between the two longitudinal beams, the transverse beams are arranged side by side along the first direction, and the first direction is intersected with the second direction;

and the longitudinal beams are connected with the cross beams in a tailor welding manner.

2. The underbody beam as claimed in claim 1, wherein said longitudinal beams include connecting portions formed integrally with said longitudinal beams and protruding from side surfaces of said longitudinal beams, said connecting portions being formed by extending one of said longitudinal beams toward the other of said longitudinal beams, said connecting portions being connected to said cross members by tailor welding.

3. The underbody sill of claim 2, wherein at least one of said side rails and said cross rail is U-shaped in cross section and includes opposing side walls, a bottom wall connected between said side walls, and an interior space defined by said side walls and said bottom wall.

4. The lower body bottom rail as claimed in claim 3, wherein said longitudinal member and said lateral member are each U-shaped in cross section, and said inner spaces of said longitudinal member and said lateral member communicate with each other.

5. The lower body sill of claim 3 wherein said side walls of said stringers are joined to said side walls of said cross member by a tailor weld;

and/or the bottom wall of the longitudinal beam is connected with the bottom wall of the cross beam in a tailor welding mode.

6. The underbody beam of claim 4, wherein the cross member includes a first flange connected to each of the side walls, the first flange of one of the adjacent two cross members extends toward the other of the adjacent two cross members, and the first flange is provided with protrusions spaced apart in the second direction.

7. The lower body sill of claim 6, wherein the side rails include a second flange connected to each of the side walls, at least a portion of the first flange and the second flange being joined by a tailor weld.

8. The underbody beam of claim 1, wherein two of said cross members include a first cross member disposed near a middle portion of said longitudinal member in said first direction and a second cross member disposed near an end portion of said longitudinal member in said first direction, and wherein said longitudinal member is bent in a third direction along a direction from said first cross member to said second cross member, said third direction intersecting both said first direction and said second direction.

9. The lower body floor rail of claim 1 wherein one of the cross members includes a plurality of reinforcing ribs spaced apart along the second direction.

10. A vehicle comprising the lower body floor rail of any of claims 1-9.

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