CN212797112U

CN212797112U - C-pillar and threshold beam connecting structure

Info

Publication number: CN212797112U
Application number: CN202021370071.8U
Authority: CN
Inventors: 林佳武; 杨宏; 李玄霜; 耿富荣
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-03-26
Anticipated expiration: 2030-07-13

Abstract

The utility model provides a connecting structure of a C-pillar and a threshold beam, which comprises a rear longitudinal beam assembly, the threshold beam, a C-pillar lower reinforcing plate, a wheel cover outer plate and the C-pillar; the bottom of the C-pillar lower reinforcing plate is provided with a first overlapping part, and the C-pillar lower reinforcing plate is fixed on the outer side of the doorsill beam through the first overlapping part; the rear longitudinal beam assembly is provided with a second lap joint part, and the rear longitudinal beam assembly is fixed on the inner side of the threshold beam through the second lap joint part. The C-pillar and threshold beam connecting structure provided by the utility model is respectively provided with the lap joint part connected with the threshold beam on the C-pillar lower reinforcing plate and the rear longitudinal beam assembly, thereby improving the connecting strength between the C-pillar lower reinforcing plate and the threshold beam as well as between the rear longitudinal beam assembly and the threshold beam and improving the sealing performance between the C-pillar lower reinforcing plate and the threshold beam; meanwhile, the bottom of the C-pillar lower reinforcing plate is fixedly connected with the threshold beam, the side face of the C-pillar lower reinforcing plate is fixedly connected with the wheel casing outer plate, and the top of the C-pillar lower reinforcing plate is in lap joint with the C-pillar, so that the force is better dispersed and transferred during collision, and the collision performance of the automobile body is improved.

Description

C-pillar and threshold beam connecting structure

Technical Field

The utility model belongs to the technical field of the car body structure technique and specifically relates to a C post and threshold roof beam connection structure is related to.

Background

In the existing all-aluminum vehicle body, related parts of a C column and a threshold beam in lap joint are basically made of aluminum, so that the connection structure is easy to realize. In the steel-aluminum hybrid vehicle body, for example, the upper vehicle body is of a steel structure, the lower vehicle body is of an aluminum structure, and a C-pillar and sill beam connecting structure at the connecting position of the upper vehicle body and the lower vehicle body has a new connecting problem. In the steel-aluminum hybrid vehicle body, because the threshold beam is the extruded piece, when being connected with the upper vehicle body, in order to ensure the welding between the rear wheel casing and the C column and the matching of the rear wheel casing inner plate and the threshold, a part of the rear wheel casing inner plate needs to be cut off, thereby causing a gap to be generated between the threshold beam and the rear wheel casing inner plate, and causing the poor sealing performance of the rear wheel casing inner plate and the rear end of the threshold beam. Meanwhile, the lower end of the C-pillar is in relatively weak lap joint with the threshold beam, so that the connection strength of the rear end of the threshold is insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the joint strength is not enough and the leakproofness is poor between C post and the threshold roof beam on the current steel aluminium hybrid vehicle body, provide a C post and threshold roof beam connection structure.

The utility model provides a technical scheme that its technical problem adopted is: a connecting structure of a C-pillar and a threshold beam comprises a rear longitudinal beam assembly, the threshold beam, a C-pillar lower reinforcing plate, a wheel cover outer plate and the C-pillar, wherein the top of the C-pillar lower reinforcing plate is in lap joint with the C-pillar, and the bottom of the wheel cover outer plate is abutted against the end part of the threshold beam; the bottom of the C-pillar lower reinforcing plate is provided with a first lap joint part matched with the threshold beam, and the C-pillar lower reinforcing plate is fixed on the outer side of the threshold beam through the first lap joint part; the rear longitudinal beam assembly is provided with a second lap joint part matched with the threshold beam, and the rear longitudinal beam assembly is fixed on the inner side of the threshold beam through the second lap joint part.

Further, the threshold roof beam include the crossbeam body with set up in the vertical mounting panel at crossbeam body top, the first overlap joint portion of reinforcing plate under the C post include with the first vertical face of the lateral surface laminating of crossbeam body and with the vertical face of the second of vertical mounting panel laminating, first vertical face with the crossbeam body passes through FDS to be connected, the vertical face of second with vertical mounting panel passes through FDS to be connected.

Specifically, the side of the C-pillar lower reinforcing plate is provided with a first flanging, and the first flanging of the C-pillar lower reinforcing plate is connected with the wheel casing outer plate in a spot welding mode.

Further, the back longeron assembly include the back longeron body with set up in the last shrouding of back longeron body top, the back longeron body with go up through SPR riveting fixation between the shrouding, the top surface of the crossbeam body of threshold roof beam be provided with the fixed first connecting hole of back longeron assembly, the back longeron assembly is fixed in through the retaining member in vertical direction on the crossbeam body of threshold roof beam.

Further, the second overlap joint portion set up in on the back longeron body, the second overlap joint portion include with the third vertical face of the medial surface laminating of crossbeam body, with the first horizontal plane of the top surface laminating of crossbeam body and with the fourth vertical face of vertical mounting panel laminating, the third vertical face with the crossbeam body passes through the FDS and connects, the fourth vertical face with vertical mounting panel passes through the FDS and connects.

Furthermore, second connecting holes in one-to-one correspondence with the first connecting holes are formed in the first horizontal plane of the rear longitudinal beam body, and the locking piece locks the rear longitudinal beam body on the cross beam body.

Further, go up the shrouding be close to one side of threshold roof beam be provided with the third connecting hole of first connecting hole one-to-one, the retaining member will go up the shrouding locking in on the crossbeam body.

Furthermore, a second flanging is further arranged on one side, close to the threshold beam, of the upper sealing plate, and the second flanging is connected with the vertical mounting plate through an FDS.

Specifically, the second flanging of the upper sealing plate is connected with the C-pillar lower reinforcing plate through FDS.

Furthermore, the upper sealing plate, the C-pillar lower reinforcing plate and the wheel casing outer plate are all steel sheet metal parts, the rear longitudinal beam body is an aluminum casting part, and the threshold beam is an aluminum extrusion part.

The utility model provides a C post and threshold roof beam connection structure's beneficial effect lies in: the C-pillar lower reinforcing plate and the rear longitudinal beam assembly in the connecting structure are respectively provided with the lap joint parts connected with the sill beam, so that the effective connection between an upper vehicle body and a lower vehicle body which are made of different materials in a steel-aluminum mixed vehicle body is realized, the connecting strength between the C-pillar lower reinforcing plate and the sill beam as well as between the rear longitudinal beam assembly and the sill beam is improved, the sealing performance between the C-pillar lower reinforcing plate and the sill beam is improved, and the torsional rigidity and the modal amplitude of a vehicle body structure are also improved; meanwhile, the bottom of the C-pillar lower reinforcing plate is fixedly connected with the threshold beam, the side face of the C-pillar lower reinforcing plate is fixedly connected with the wheel casing outer plate, and the top of the C-pillar lower reinforcing plate is in lap joint with the C-pillar, so that the force is better dispersed and transferred during collision, and the collision performance of the automobile body is improved.

Drawings

Fig. 1 is a schematic perspective view of a connection structure between a C-pillar and a sill beam according to the present invention;

fig. 2 is a sectional view of a connection structure of a C-pillar and a sill beam provided by the present invention;

fig. 3 is a schematic perspective view of a middle C-pillar lower reinforcing plate of a connection structure of a C-pillar and a sill beam according to the present invention;

fig. 4 is a top view of the rear longitudinal beam assembly in a C-pillar and sill beam connection structure according to the present invention.

In the figure: 100-C pillar and sill beam connecting structure, 10-rear longitudinal beam assembly, 11-rear longitudinal beam body, 111-second lap joint part, 1111-third vertical surface, 1112-first horizontal surface, 1113-fourth vertical surface, 1114-second connecting hole, 12-upper sealing plate, 121-third connecting hole, 122-second flanging, 20-sill beam, 21-cross beam body, 22-vertical mounting plate, 23-reinforcing rib, 30-C pillar lower reinforcing plate, 31-first lap joint part, 311-first vertical surface, 312-second vertical surface, 32-first flanging, 40-wheel cover outer plate, 50-C pillar, 60-bolt and 70-rivet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, for the utility model provides a C post and threshold roof beam connection structure 100, this C post and threshold roof beam connection structure 100 is particularly useful for steel aluminium hybrid vehicle body, connects effectively and fixes the last automobile body and the lower automobile body of different materials, under the stable prerequisite of guaranteeing to connect, still has better leakproofness simultaneously.

Specifically, as shown in fig. 1, the utility model provides a C post and threshold beam connection structure 100 includes back longeron assembly 10, threshold beam 20, reinforcing plate 30 under the C post, wheel casing planking 40 and C post 50, and the top and the C post 50 overlap joint of reinforcing plate 30 under the C post, and the bottom butt of wheel casing planking 40 is in the tip of threshold beam 20. The top of this reinforcing plate 30 under C post is connected with C post 50, and the bottom is connected with threshold roof beam 20, and the side is connected with wheel casing planking 40, has realized the relatively fixed connection between the three part through reinforcing plate 30 under the C post to the transmission of collision power when realizing the collision, thereby guaranteed the mutual firm between the three part.

Specifically, the utility model provides a back longeron assembly 10 that provides has steel sheet metal component and aluminium casting simultaneously in C post and threshold roof beam connection structure 100, and threshold roof beam 20 is aluminium extrusion spare, and reinforcing plate 30 and wheel casing planking 40 are steel sheet metal component under the C post, through the utility model provides a relative fixed connection between steel sheet metal component and the aluminium part can be realized to connection structure 100. The steel-aluminum mixed material is adopted as different parts of the vehicle body, so that the overall weight of the vehicle body can be effectively reduced, and the aim of improving the cruising ability of the vehicle is fulfilled by reducing the weight.

In order to ensure the stability of the connection between the metal plate and the aluminum member, the bottom of the C-pillar lower reinforcement 30 in the connection structure 100 provided by the present invention has a first overlapping portion 31 engaged with the rocker 20, and the C-pillar lower reinforcement 30 is fixed to the outer side of the rocker 20 by the first overlapping portion 31; the rear side member assembly 10 has a second lap joint portion 111 that engages with the rocker beam 20, and the rear side member assembly 10 is fixed to the inner side of the rocker beam 20 by the second lap joint portion 111. The C-pillar lower gusset 30 and the rear side rail assembly 10 are located above the rocker 20 and on both the inner and outer sides of the rocker 20, respectively. This gusset 30 is connected firmly between the threshold roof beam 20 through first overlap joint 31 realization under the C post, and back longeron assembly 10 realizes being connected firmly between the threshold roof beam 20 through second overlap joint 111 to guarantee under the C post between the gusset 30, the threshold roof beam 20 and the back longeron assembly 10 three kinds of different materials can fastening connection.

In the present embodiment, as shown in fig. 1, the rocker beam 20 is an aluminum extruded member, the rocker beam 20 includes a cross beam body 21 and a vertical mounting plate 22 disposed on the top of the cross beam body 21, and a reinforcing rib 23 is disposed inside the cross beam body 21. The vertical mounting plate 22 is integrally formed with the cross member body 21. The C-pillar lower reinforcing plate 30 and the rear longitudinal beam assembly 10 in the connecting structure 100 are respectively located on two sides of the vertical mounting plate 22, and are both fixedly connected with the vertical mounting plate 22.

Further, as shown in fig. 3, the first overlapping portion 31 of the C-pillar lower reinforcement panel 30 includes a first vertical surface 311 attached to the outer side surface of the cross beam body 21 and a second vertical surface 312 attached to the vertical mounting plate 22, the first vertical surface 311 is connected to the cross beam body 21 by FDS, and the second vertical surface 312 is connected to the vertical mounting plate 22 by FDS. A horizontal connecting plate is further provided between the first vertical surface 311 and the second vertical surface 312 of the C-pillar lower gusset 30, and an end of the horizontal connecting plate is adjacent to the rocker beam 20 and gradually extends upward to a side surface of the C-pillar lower gusset 30. The first bridging portion 31 provided to the C-pillar lower gusset 30 can improve the stability of the connection between it and the rocker 20, thereby securing the stable connection between the C-pillar 50 and the rocker 20. Wherein, the first lap joint part 31 is fixed in the horizontal direction through FDS to realize connection. FDS connect and all indicate the connection that realizes through rotatory tapping riveting technique. In this embodiment, the FDS connections are all secured using rivets 70. The FDS connection is a rotary tapping and riveting process, the connection among different materials can be realized through a cold forming process of tapping and riveting after the plate is thermally deformed through high-speed rotation, and the FDS connection has better air tightness, water tightness and dynamic bearing capacity.

Specifically, as shown in fig. 3, the first flange 32 is provided on the side of the C-pillar lower reinforcing plate 30, and the first flange 32 of the C-pillar lower reinforcing plate 30 is spot-welded to the wheel house outer plate 40. The side of the C-pillar lower reinforcing plate 30 is fixedly connected with the wheel cover outer plate 40 through the first flanging 32. The first flange 32 provides a sealing engagement between the C-pillar lower reinforcement plate 30 and the wheel house outer plate 40.

Further, as shown in fig. 1 and fig. 4, in the connection structure 100 provided by the present invention, the rear longitudinal beam assembly 10 includes a rear longitudinal beam body 11 and an upper sealing plate 12 disposed above the rear longitudinal beam body 11, and the rear longitudinal beam body 11 and the upper sealing plate 12 are riveted and fixed by SPR. Structural adhesive is further arranged at the joint between the rear longitudinal beam body 11 and the upper closing plate 12.

Further, the fixed connection between the rear side member assembly 10 and the rocker beam 20 is achieved by the second lap joint portion 111 provided on the rear side member body 11. This second bridging portion 111 sets up on back longeron body 11, and second bridging portion 111 includes the third vertical face 1111 with the laminating of the medial surface of crossbeam body 21, the first horizontal plane 1112 with the laminating of the top surface of crossbeam body 21 and the fourth vertical face 1113 with the laminating of vertical mounting panel 22, and the third vertical face 1111 passes through the FDS with crossbeam body 21 to be connected, and the fourth vertical face 1113 passes through the FDS with vertical mounting panel 22 to be connected. As shown in fig. 2, the third vertical surface 1111 of the second lap joint portion 111 is provided at the vertical mounting plate 22 of the rocker beam 20, the fourth vertical surface 1113 is provided on the inner side surface of the cross beam body 21 of the rocker beam 20, and the step structure formed by the first vertical surface 1111 and the first horizontal surface 1112 is matched with the cross beam body 21 of the rocker beam 20. The rear side member assembly 10 is fixed to the rocker beam 20 in the horizontal direction by FDS and by rivets 70.

Specifically, the rear side member assembly 10 is fixed to the cross member body 21 of the rocker 20 in the vertical direction by a locking member, and the top surface of the cross member body 21 of the rocker 20 is provided with a first connecting hole fixed to the rear side member assembly 10. The connection of the rear longitudinal beam assembly 10 and the threshold beam 20 in the vertical direction is realized through a locking piece, and structural glue is arranged on the periphery of the locking piece. In this embodiment, the retaining member is a bolt 60. As shown in fig. 2, the first horizontal surface 1112 is provided with second connection holes 1114 corresponding to the first connection holes one to one, and the locking member locks the first horizontal surface 1112 to the beam body 21. The fixing between the rear side member body 11 and the rocker beam 20 in the vertical direction is achieved by locking members, which are fixed by bolts 60 in this embodiment. As shown in fig. 4, the upper closing plate 12 is provided at a side close to the threshold beam 20 with third coupling holes 121 disposed in one-to-one correspondence with the first coupling holes, and a locking member locks the upper closing plate 12 to the cross member body 21. In this embodiment, three third connecting holes 121 are provided in the upper closing plate 12 for fixing, and the rear side rail assembly 10 and the rocker beam 20 are fixedly connected in the vertical direction by three bolts 60.

Further, as shown in FIG. 2, the upper closure plate 12 is further provided with a second flange 122 on a side thereof adjacent to the rocker beam 20, the second flange 122 being connected to the vertical mounting plate 22 by FDS. The bottom of the second flange 122 is fixedly connected to the vertical mounting plate 22 on the rocker beam 20, the top of the second flange 122 is fixedly connected to the C-pillar lower reinforcement 30, and the second flange 122 of the upper closure panel 12 is connected to the C-pillar lower reinforcement 30 by FDS.

The utility model provides a lap joint portion of being connected with threshold roof beam 20 has been set up respectively on C post lower reinforcing plate 30 and the back longeron assembly 10 in C post 50 and the connecting structure 100 of threshold roof beam 20, realized the effective connection between the last automobile body of different materials in the steel-aluminum hybrid automobile body and the lower automobile body, improved the joint strength between C post lower reinforcing plate 30 and threshold roof beam 20 and back longeron assembly 10 and threshold roof beam 20, promoted the sealing performance between C post lower reinforcing plate 30 and threshold roof beam 20, also improved the torsional rigidity and the modal amplitude of automobile body structure; meanwhile, the bottom of the C-pillar lower reinforcing plate 30 is fixedly connected with the threshold beam 20, the side face of the C-pillar lower reinforcing plate is fixedly connected with the wheel house outer plate 40, and the top of the C-pillar lower reinforcing plate is lapped with the C-pillar 50, so that the force is better dispersed and transferred during collision, and the collision performance of the vehicle body is improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A connecting structure of a C-pillar and a threshold beam is characterized by comprising a rear longitudinal beam assembly, the threshold beam, a C-pillar lower reinforcing plate, a wheel cover outer plate and the C-pillar, wherein the top of the C-pillar lower reinforcing plate is in lap joint with the C-pillar, and the bottom of the wheel cover outer plate is abutted against the end part of the threshold beam; the bottom of the C-pillar lower reinforcing plate is provided with a first lap joint part matched with the threshold beam, and the C-pillar lower reinforcing plate is fixed on the outer side of the threshold beam through the first lap joint part; the rear longitudinal beam assembly is provided with a second lap joint part matched with the threshold beam, and the rear longitudinal beam assembly is fixed on the inner side of the threshold beam through the second lap joint part.

2. The connecting structure of a C-pillar and a rocker beam as claimed in claim 1, wherein the rocker beam comprises a beam body and a vertical mounting plate disposed at the top of the beam body, the first lap joint portion of the C-pillar lower reinforcement plate comprises a first vertical surface attached to the outer side surface of the beam body and a second vertical surface attached to the vertical mounting plate, the first vertical surface is connected to the beam body through FDS, and the second vertical surface is connected to the vertical mounting plate through FDS.

3. The connecting structure of the C-pillar and the rocker beam as recited in claim 1, wherein a first flanging is provided on a side surface of the C-pillar lower reinforcing plate, and the first flanging of the C-pillar lower reinforcing plate is spot-welded to the wheel house outer panel.

4. The connecting structure of the C-pillar and the threshold beam as claimed in claim 2, wherein the rear longitudinal beam assembly includes a rear longitudinal beam body and an upper sealing plate disposed above the rear longitudinal beam body, the rear longitudinal beam body and the upper sealing plate are fixed by SPR riveting, a top surface of the cross beam body of the threshold beam is provided with a first connecting hole fixed with the rear longitudinal beam assembly, and the rear longitudinal beam assembly is fixed to the cross beam body of the threshold beam in a vertical direction by a locking member.

5. The C-pillar and rocker beam connection structure of claim 4, wherein the second lap joint portion is provided on the rear side rail body, the second lap joint portion includes a third vertical surface attached to an inner side surface of the cross rail body, a first horizontal surface attached to a top surface of the cross rail body, and a fourth vertical surface attached to the vertical mounting plate, the third vertical surface is connected to the cross rail body through FDS, and the fourth vertical surface is connected to the vertical mounting plate through FDS.

6. The connecting structure of the C-pillar and the sill beam as claimed in claim 5, wherein a first horizontal surface of the rear longitudinal beam body is provided with second connecting holes corresponding to the first connecting holes one to one, and the locking member locks the rear longitudinal beam body to the cross beam body.

7. The structure as claimed in claim 4, wherein the upper sealing plate is provided at a side thereof adjacent to the doorsill beam with third coupling holes corresponding to the first coupling holes one to one, and the locking member locks the upper sealing plate to the cross member body.

8. The structure as claimed in claim 4, wherein the upper sealing plate is further provided with a second flange at a side adjacent to the rocker, and the second flange is connected to the vertical mounting plate by FDS.

9. The structure as claimed in claim 8, wherein the second flange of the upper closure plate is connected to the C-pillar lower reinforcement plate by FDS.

10. The connecting structure of a C-pillar and a rocker beam as claimed in claim 4, wherein the upper sealing plate, the C-pillar lower reinforcing plate and the wheel house outer plate are all steel sheet metal parts, the rear longitudinal beam body is an aluminum casting part, and the rocker beam is an aluminum extrusion part.