CN212401365U - Vehicle body rear frame structure - Google Patents

Abstract

The utility model discloses a frame structure at the rear part of a vehicle body, which is provided with a plurality of vertical ring structures, wherein each vertical ring structure is formed by connecting a beam of a top cover frame assembly, a beam of a rear floor frame assembly and a beam column which extends up and down of a rear side wall frame assembly; at least two stand between the ring structure and set up at interval, two at least stand the ring structure and intersect in rear side wall frame assembly department, and stand between the ring structure through another stand ring structural connection of at least two interval settings. Can strengthen the different positions of automobile body top, bottom and lateral part for the load that automobile body top, bottom, lateral part and rear portion bore can be followed a plurality of routes and run through the ground and dispersed to whole automobile body, avoids passing power because of can not lining up between the upright ring structure and leads to the structure fracture, reduces the automobile body overall deformation, increases automobile body rear portion frame construction's rigidity, intensity and modal property, avoids setting up too much independent local additional strengthening for automobile body rear portion frame construction, simplified structure.

Description

Vehicle body rear frame structure

Technical Field

The utility model belongs to the automobile field especially relates to automobile body rear portion frame construction.

Background

With the rapid development of automobile technology, people have higher and higher requirements on automobile performance. Due to the diversity of chassis suspension forms and the variability of modeling, the difference of the rear frame structures of the vehicle bodies of different vehicle types is relatively large, the quality of the rear frame structures of the vehicle bodies plays a decisive role in the rigidity, the strength, the bending mode and other performances of the vehicle bodies, and meanwhile, the performances of the rear collision, the riding comfort and the like of the whole vehicle can be directly influenced. The existing frame structure at the rear part of the automobile body is often required to be designed with local reinforcement for meeting the requirements of rigidity, strength, modal and local dynamic rigidity of the automobile body, but the reinforcement structures are relatively independent, some positions are over-designed, and some positions have insufficient performance, so that the frame structure at the rear part of the automobile body is complex to carry, the whole force transmission path is not reasonable enough, the connectivity of the force transmission path is not good, the automobile body is easy to crack, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the frame structure at the rear part of the vehicle body is provided aiming at the problems that the whole force transmission path of the existing scheme is not reasonable enough and is easy to crack.

In order to solve the technical problem, an embodiment of the present invention provides a frame structure at the rear of a vehicle body, including a top cover frame assembly, a rear floor frame assembly and a rear side wall frame assembly, wherein the frame structure at the rear of the vehicle body has a plurality of vertical ring structures, and each vertical ring structure is formed by connecting a beam of the top cover frame assembly, a beam of the rear floor frame assembly and a beam column of the rear side wall frame assembly, which extend up and down; at least two stand ring structures are arranged at intervals, the at least two stand ring structures are intersected at the rear side wall frame assembly, and the at least two stand ring structures arranged at intervals are connected through another stand ring structure.

Optionally, the upright ring structure of the rear frame structure of the vehicle body includes a C-pillar ring, a D-pillar ring, and a CD-pillar connecting ring, two beams spaced at a distance from each other in front of and behind the roof frame assembly respectively constitute a top beam of the C-pillar ring and a top beam of the D-pillar ring, an upper end of the CD-pillar connecting ring is connected to the D-pillar ring, and a lower end of the CD-pillar connecting ring is connected to the C-pillar ring.

Optionally, the top cover frame assembly comprises a top cover left side beam, a top cover right side beam, a first top cover cross beam and a second top cover cross beam, wherein the first top cover cross beam and the second top cover cross beam are connected to the top cover left side beam and the top cover right side beam; the rear floor frame assembly comprises a left rear longitudinal beam, a right rear longitudinal beam, a first rear floor cross beam and a second rear floor cross beam, and the first rear floor cross beam and the second rear floor cross beam are connected to the left rear longitudinal beam and the right rear longitudinal beam; the rear side wall frame assembly comprises a left C column, a right C column, a rear tail frame left side beam, a rear tail frame right side beam, a left rear side wall upper supporting beam and a right rear side wall upper supporting beam;

the left end of the first top cover beam, the left C column, the first rear floor beam, the right C column and the right end of the first top cover beam are sequentially connected, and the first top cover beam, the left C column, the first rear floor beam and the right C column surround to form a C column ring;

the left end of the second top cover beam, the rear tail frame left side beam, the second rear floor beam, the rear tail frame right side beam and the right end of the second top cover beam are sequentially connected, and the second top cover beam, the rear tail frame left side beam, the second rear floor beam and the rear tail frame right side beam are enclosed to form a D-shaped column ring;

the left rear side upper supporting beam and the right rear side upper supporting beam are connected to the C column ring and the D column ring and enclose with the local part of the C column ring and the local part of the D column ring to form the CD column connecting ring.

Optionally, the left C-column comprises a left C-column upper section and a left C-column lower section connected to each other, and the right C-column comprises a right C-column upper section and a right C-column lower section connected to each other; the upper and lower ends of the left rear side wall upper supporting beam are respectively connected to the left end of the second top cover beam and the upper end of the left C column lower section, the upper and lower ends of the right rear side wall upper supporting beam are respectively connected to the right end of the second top cover beam and the upper end of the right C column lower section, and the second top cover beam, the left rear side wall upper supporting beam, the left C column lower section, the first rear floor beam, the right C column lower section and the right rear side wall upper supporting beam are enclosed to form a CD column connecting ring.

Optionally, the upper section of the left C column gradually extends backwards from top to bottom, the lower section of the left C column gradually extends forwards from top to bottom, and the upper section of the left C column and the lower section of the left C column are connected to form a curved column which is arched backwards; the left rear side wall upper supporting beam gradually extends forwards from top to bottom, and the left rear side wall upper supporting beam and the left C column lower section are connected into a first left oblique beam;

the upper section of the right C column gradually extends backwards from top to bottom, the lower section of the right C column gradually extends forwards from top to bottom, and the upper section of the right C column and the lower section of the right C column are connected to form a curved column which is arched backwards; the right rear side wall upper supporting beam gradually extends forwards from top to bottom, and the right rear side wall upper supporting beam and the right C column lower section are connected into a first right oblique beam.

Optionally, the vertical ring structure of the vehicle body rear frame structure further comprises a rear shock absorber main support ring;

the rear floor frame assembly further comprises a third rear floor beam, and the rear side wall frame assembly further comprises a first left rear side wall lower supporting beam and a first right rear side wall lower supporting beam;

the third rear floor cross member is positioned between the first rear floor cross member and the second rear floor cross member and is connected to the left rear longitudinal beam and the right rear longitudinal beam;

the rear damper main support ring is characterized in that the lower end of the left rear side wall upper support beam, the first left rear side wall lower support beam, the third rear floor cross beam, the first right rear side wall lower support beam and the lower end of the right rear side wall upper support beam are sequentially connected, the second top cover cross beam, the left rear side wall upper support beam, the first left rear side wall lower support beam, the third rear floor cross beam, the first right rear side wall lower support beam and the right rear side wall upper support beam are enclosed to form the rear damper main support ring.

Optionally, the vertical ring structure of the vehicle body rear frame structure further comprises a rear shock absorber auxiliary support ring;

the upper end of the first left rear side wall lower supporting beam is further connected with the lower end of the left C column upper section, the upper end of the first right rear side wall lower supporting beam is further connected with the lower end of the right C column upper section, the first top cover beam is connected with the left C column upper section, the first left rear side wall lower supporting beam, the third rear floor beam is connected with the first right rear side wall lower supporting beam and the right C column upper section are enclosed to form the rear shock absorber auxiliary supporting ring.

Optionally, the vertical ring structure of the vehicle body rear frame structure further comprises a sub-frame main support ring;

the rear floor frame assembly further comprises a fourth rear floor beam, and the rear side wall frame assembly further comprises a second left rear side wall lower supporting beam and a second right rear side wall lower supporting beam;

the fourth rear floor cross member is positioned between the second rear floor cross member and the third rear floor cross member and is connected to the left rear longitudinal beam and the right rear longitudinal beam;

the lower extreme of left side C post upper segment, the left back side wall of second side down-support roof beam the floor crossbeam behind the fourth the right back side wall down-support roof beam of second and the lower extreme of right side C post upper segment connects gradually, first top cap crossbeam left side C post upper segment, the left back side wall of second side down-support roof beam the floor crossbeam behind the fourth right back side wall down-support roof beam with right side C post upper segment encloses to close and forms sub vehicle frame main tributary supporting ring.

Optionally, the vertical ring structure of the vehicle body rear frame structure further comprises a sub-frame auxiliary support ring;

the upper end of the second left rear side wall lower supporting beam is connected with the lower end of the left rear side wall upper supporting beam, the upper end of the second right rear side wall lower supporting beam is connected with the lower end of the right rear side wall upper supporting beam, the second top cover beam, the left rear side wall upper supporting beam, the second left rear side wall lower supporting beam, the fourth rear floor beam, the second right rear side wall lower supporting beam and the right rear side wall upper supporting beam surrounding and closing to form the auxiliary frame auxiliary supporting ring.

Optionally, the left C-pillar upper section and the second left rear side lower supporting beam are connected to form a second left oblique beam which gradually extends backward from top to bottom, and the right C-pillar upper section and the second right rear side lower supporting beam are connected to form a second right oblique beam which gradually extends backward from top to bottom; the rear side wall frame assembly further comprises a third left rear side wall lower supporting beam and a third right rear side wall lower supporting beam;

the third left rear side wall lower support beam is connected to the first left rear side wall lower support beam, the second left rear side wall lower support beam and the left rear longitudinal beam;

the third right rear side wall lower support beam is connected with the first right rear side wall lower support beam, the second right rear side wall lower support beam and the right rear longitudinal beam.

The frame structure at the rear part of the car body provided by the embodiment of the utility model has the advantages that the upright ring structures arranged at intervals can strengthen different positions at the top part, the bottom part and the side part of the car body, the upright ring structures arranged at intervals are connected through other upright ring structures, the load borne by the top, the bottom, the lateral part and the rear part of the automobile body can be dispersed to the whole automobile body in a penetrating way along a plurality of paths, structural cracking caused by the fact that force cannot be transmitted between the vertical ring structures is avoided, parts of the vertical ring structures are intersected at the positions of the rear side wall frame assemblies, the load can be dispersed to the whole automobile body in a penetrating way along a plurality of paths, the integral deformation of the automobile body is reduced, more reasonable force transmission paths are provided, the rigidity, the strength and the modal performance of the rear frame structure of the automobile body are improved, the integral rigidity and the NVH performance of the automobile body are improved, excessive independent local reinforcing structures are prevented from being arranged for the rear frame structure of the.

Drawings

Fig. 1 is a schematic structural view of a rear frame structure of a vehicle body according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the C-ring of FIG. 1;

FIG. 3 is a schematic view of the CD column connecting ring in FIG. 1;

FIG. 4 is a schematic structural view of the D-pillar ring of FIG. 1;

FIG. 5 is a schematic structural view of the main support ring of the rear shock absorber in FIG. 1;

FIG. 6 is a schematic structural view of an auxiliary support ring of the rear shock absorber in FIG. 1;

FIG. 7 is a schematic structural view of the primary support ring of the subframe of FIG. 1;

FIG. 8 is a schematic structural view of the auxiliary support ring of the subframe of FIG. 1;

the reference numerals in the specification are as follows:

101. a top cover left side beam; 102. a top cover right side beam; 103. a first roof rail; 104. a second roof rail; 105. a top cover left stiffening beam; 106. a top cover right stiffening beam;

201. a left rear stringer; 202. a right rear stringer; 203. a first rear floor beam; 204. a second rear floor beam; 205. a third rear floor beam; 206. a fourth rear floor beam;

301. a left C column; 3011. the upper section of the left C column; 3012. the lower section of the left C column; 302. a right C column; 3021. the upper section of the right C column; 3022. the lower section of the right C column; 303. a rear tail frame left side beam; 304. a rear tail frame right side beam; 305. a left rear side upper supporting beam; 306. a right rear side upper supporting beam; 307. a first left rear side lower support beam; 308. a first right rear side lower support beam; 309. a second left rear side lower support beam; 310. a second right rear side lower support beam; 311. a third left rear side lower support beam; 3111. a front section of the left lower supporting beam; 3112. a left lower support beam rear section; 312. a third right rear side lower support beam; 313. a left rear side wall cross member; 314. a right rear side wall cross member;

4. a rear tail frame lower beam; 5. and a rear anti-collision beam.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The directions of front, back, left, right, up and down in the application are consistent with the direction of the automobile in normal running.

The embodiment of the utility model provides a vehicle body rear frame structure, including top cap frame assembly, back floor frame assembly and back side wall frame assembly, vehicle body rear frame structure has a plurality of upright ring structures, upright ring structure is formed by connecting the crossbeam of top cap frame assembly, the crossbeam of back floor frame assembly and the beam column of back side wall frame assembly extending from top to bottom; at least two stand between the ring structure and set up at interval, two at least stand the ring structure and intersect in rear side wall frame assembly department, and stand between the ring structure through another stand ring structural connection of at least two interval settings.

Compared with the prior art, the frame structure at the rear part of the automobile body provided by the embodiment of the utility model has the advantages that the upright ring structures arranged at intervals can strengthen different positions of the top part, the bottom part and the side part of the automobile body, and the upright ring structures arranged at intervals are connected through other upright ring structures, so that the load borne by the top part, the bottom part, the side part and the rear part of the automobile body can be dispersed to the whole automobile body through a plurality of paths, the structural cracking caused by the fact that the upright ring structures can not be communicated with each other to transfer force is avoided, the intersection of the frame assemblies at the rear side wall among the partial upright ring structures is beneficial to the load to be dispersed to the whole automobile body through a plurality of paths, the integral deformation of the automobile body is reduced, a more reasonable force transfer path is provided, the rigidity, the strength and the modal performance of the frame structure at the rear part of the automobile body are improved, the structure is simplified.

In one embodiment, the standing ring structure of the rear frame structure of the vehicle body comprises a C-pillar ring, a D-pillar ring and a CD-pillar connecting ring, two beams arranged at intervals in front and at back of the roof frame assembly respectively form a top beam of the C-pillar ring and a top beam of the D-pillar ring, the upper end of the CD-pillar connecting ring is connected to the D-pillar ring, and the lower end of the CD-pillar connecting ring is connected to the C-pillar ring. The C-pillar ring is a standing ring structure comprising C pillars, namely, the C pillars of the rear side wall frame assembly form a side supporting beam of the C-pillar ring, and the D-pillar ring is a standing ring structure comprising D pillars, namely, the D pillars of the rear side wall frame assembly form a side supporting beam of the D-pillar ring.

The C-shaped pillar ring can improve the side collision safety performance, the roof compression resistance performance, the rear collision safety performance and the torsional rigidity of the vehicle body, and in addition, the mounting area of the rear longitudinal arm or the trailing arm of most vehicle types is close to the rear end of the doorsill; the D-shaped pillar ring can improve the compression resistance of the roof, the rear collision safety performance, the torsional rigidity and the torsional mode of the vehicle body, and increase the opening and closing feeling of the back door and the riding comfort; the CD post connecting ring connects the C post ring and the D post ring, the reinforcing effect is played to the C post ring and the D post ring, the force transmission path of the dispersed stress at the rear part of the vehicle body is increased, the C post ring, the D post ring and the CD post connecting ring are mutually connected, so that the top part, the bottom part, the load born by the side part and the rear part of the vehicle body can be dispersed to the whole vehicle body in a penetrating way, the structural cracking caused by the fact that the force cannot be transmitted through the C post ring and the D post ring is avoided, the rigidity, the strength and the modal performance of the frame structure at the rear part of the vehicle body are increased, the overall rigidity and the NVH performance of the vehicle body are improved, the excessive independent local reinforcing structure is avoided being arranged for the frame structure at the rear part of the vehicle body, the reinforcing effects of.

In one embodiment, as shown in fig. 1, the roof frame assembly comprises a roof left side beam 101, a roof right side beam 102, a first roof cross beam 103 and a second roof cross beam 104, wherein the first roof cross beam 103 and the second roof cross beam 104 are connected to the roof left side beam 101 and the roof right side beam 102; the rear floor frame assembly comprises a left rear longitudinal beam 201, a right rear longitudinal beam 202, a first rear floor cross beam 203 and a second rear floor cross beam 204, and the first rear floor cross beam 203 and the second rear floor cross beam 204 are connected to the left rear longitudinal beam 201 and the right rear longitudinal beam 202; the rear side wall frame assembly comprises a left C column 301, a right C column 302, a rear tail frame left side beam 303, a rear tail frame right side beam 304, a left rear side wall upper supporting beam 305 and a right rear side wall upper supporting beam 306;

as shown in fig. 1 and 2, the left end of the first roof cross beam 103, the left C-pillar 301, the first rear floor cross beam 203, the right C-pillar 302 and the right end of the first roof cross beam 103 are connected in sequence, and the first roof cross beam 103, the left C-pillar 301, the first rear floor cross beam 203 and the right C-pillar 302 enclose to form a C-pillar ring;

as shown in fig. 1 and 4, the left end of the second roof cross beam 104, the rear tail frame left side beam 303, the second rear floor cross beam 204, the rear tail frame right side beam 304 and the right end of the second roof cross beam 104 are connected in sequence, and the second roof cross beam 104, the rear tail frame left side beam 303, the second rear floor cross beam 204 and the rear tail frame right side beam 304 enclose to form a D-pillar ring; the rear tail frame left side beam 303 is also referred to as a left D-pillar, and the rear tail frame right side beam 304 is also referred to as a right D-pillar;

the left rear side upper support beam 305 and the right rear side upper support beam 306 are connected to the C-pillar ring and the D-pillar ring, and enclose with a part of the C-pillar ring and a part of the D-pillar ring to form a CD-pillar connecting ring.

Enclose through four beam column structures and close the top that forms around automobile body rear portion frame construction, the C post ring of lateral part and bottom, enclose through four beam column structures and close the top that forms around automobile body rear portion frame construction, the D post ring of lateral part and bottom, enclose through left back side wall upper support beam 305, right back side wall upper support beam 306, the part of C post ring and the part of D post ring enclose and close the top that forms around automobile body rear portion frame construction, the CD post go-between of lateral part and bottom, the overlap joint is simpler, reasonable equilibrium, make the load that automobile body top, bottom, lateral part and rear portion bore disperse to whole automobile body with changing to lining up, avoid the fracture, increase automobile body rear portion frame construction's rigidity, intensity and modal property.

In one embodiment, as shown in fig. 1 and 3, the left C-pillar 301 includes an interconnected left C-pillar upper section 3011 and a left C-pillar lower section 3012, and the right C-pillar 302 includes an interconnected right C-pillar upper section 3021 and a right C-pillar lower section 3022; the upper and lower ends of the left rear side wall upper supporting beam 305 are respectively connected to the left end of the second top cover beam 104 and the upper end of the left C column lower segment 3012, the upper and lower ends of the right rear side wall upper supporting beam 306 are respectively connected to the right end of the second top cover beam 104 and the upper end of the right C column lower segment 3022, and the second top cover beam 104, the left rear side wall upper supporting beam 305, the left C column lower segment 3012, the first rear floor beam 203, the right C column lower segment 3022 and the right rear side wall upper supporting beam 306 are enclosed to form a CD column connecting ring.

The force transmission path of the rear trailing arm or trailing arm of the chassis system is: the load is transmitted to the left rear side upper side supporting beam 305/the right rear side upper side supporting beam 306 and the left C column upper section 3011/the right C column upper section 3021 through the left C column lower section 3012/the right C column lower section 3022, and then is dispersed to the whole vehicle body, and is mainly supported through the rear C column ring and the CD column connecting ring, so that the rigidity and the strength of the vehicle body are ensured, and the overall deformation of the vehicle body is reduced.

Specifically, as shown in fig. 1, the left and right ends of the first roof cross beam 103 are respectively connected to the roof left side beam 101 and the roof right side beam 102, and the left and right ends of the second roof cross beam 104 are respectively connected to the rear end of the roof left side beam 101 and the rear end of the roof right side beam 102, that is, the second roof cross beam 104 is a roof rear cross beam;

the left end and the right end of the first rear floor cross beam 203 are respectively connected to the left rear longitudinal beam 201 and the right rear longitudinal beam 202, and the left end and the right end of the second rear floor cross beam 204 are respectively connected to the left rear longitudinal beam 201 and the right rear longitudinal beam 202;

the upper end and the lower end of the left C column 301 are respectively connected to the left end of the first top cover beam 103 and the left end of the first rear floor beam 203, and specifically can be directly connected to the left end of the first top cover beam 103 and the left end of the first rear floor beam 203, and can also be indirectly connected to the left end of the first top cover beam 103 and the left end of the first rear floor beam 203 through the position of the left side longitudinal beam 201 over to the left end of the first top cover beam 103 and the position of the left rear longitudinal beam 201 over to the left end of the first rear floor beam 203. The upper end and the lower end of the right C-pillar 302 are respectively connected to the right end of the first top cover cross beam 103 and the right end of the first rear floor cross beam 203, and specifically can be directly connected to the right end of the first top cover cross beam 103 and the right end of the first rear floor cross beam 203, or can be indirectly connected to the right end of the first top cover cross beam 103 and the right end of the first rear floor cross beam 203 by being directly connected to the position of the top cover right side beam 102 facing the right end of the first top cover cross beam 103 and the position of the right rear longitudinal beam 202 facing the right end of the first rear floor cross beam 203;

the upper end and the lower end of the rear tail frame left side beam 303 are respectively connected to the left end of the second top cover beam 104 and the left end of the second rear floor beam 204, and specifically, the upper end and the lower end of the rear tail frame left side beam 303 can be directly connected to the left end of the second top cover beam 104 and the left end of the second rear floor beam 204, and the upper end and the lower end of the rear tail frame left side beam 303 can also be indirectly connected to the left end of the second top cover beam 104 and the left end of the second rear floor beam 204 by being directly connected to the position of the top cover left side beam 101, which is just opposite to the left end of the second top cover beam 104, and the position. The upper and lower ends of the rear tail frame right side beam 304 are respectively connected to the right end of the second top cover cross beam 104 and the right end of the second rear floor cross beam 204, and specifically, the rear tail frame right side beam can be directly connected to the right end of the second top cover cross beam 104 and the right end of the second rear floor cross beam 204, or can be indirectly connected to the right end of the second top cover cross beam 104 and the right end of the second rear floor cross beam 204 by being directly connected to the position of the top cover right side beam 102 facing the right end of the second top cover cross beam 104 and the position of the right rear longitudinal beam 202 facing the right end of the second rear floor cross beam 204.

In an embodiment, as shown in fig. 1 to 3, the left C-pillar upper section 3011 gradually extends backward from top to bottom, and specifically may be curved backward or linearly extend backward, the left C-pillar lower section 3012 gradually extends forward from top to bottom, and specifically may be curved forward or linearly extend forward, and the left C-pillar upper section 3011 and the left C-pillar lower section 3012 are connected to form a curved column that arches backward; the left rear side wall upper supporting beam 305 and the left C column lower section 3012 are connected into a first left oblique beam; specifically, both ends of the first left oblique beam extend to the left end of the second roof rail 104 and the left end of the first rear floor rail 203, respectively.

The right C-pillar upper section 3021 gradually extends backward from top to bottom, specifically, may be bent backward or linearly extended backward, the right C-pillar lower section 3022 gradually extends forward from top to bottom, specifically, may be bent forward or linearly extended forward, specifically, may be bent forward or extended forward, and the right C-pillar upper section 3021 and the right C-pillar lower section 3022 are connected to form a curved column which is arched backward; the right rear side surrounding upper supporting beam 306 gradually extends forwards from top to bottom, and the right rear side surrounding upper supporting beam 306 and the right C column lower section 3022 are connected into a first right oblique beam; specifically, both ends of the first right cant beam extend to the right end of the second roof rail 104 and the right end of the first rear floor rail 203, respectively.

The existing left C column and the right C column are bent columns which are arched backwards, but the upper ends of the left C column and the right C column are directly connected to a top cover rear cross beam generally, a left rear side wall upper supporting beam and a right rear side wall upper supporting beam are not arranged, a vehicle body rear frame structure does not form a coherent integral frame between an upper vehicle body and a lower vehicle body, the force transmission effect is poor, and cracking is easily caused. In the present application, the left rear side upper supporting beam 305 and the left C-pillar lower section 3012 both extend gradually forward from top to bottom, so that the left rear side upper supporting beam 305 and the left C-pillar lower section 3012 are connected to form a first left oblique beam, and thus a force transmission path penetrating to the second top cover cross beam 104 and the first rear floor cross beam 203 is formed between the C-pillar ring and the D-pillar ring; the right rear side upper surrounding bracing beam 306 and the right C-pillar lower section 3022 both extend forward from top to bottom gradually, so that the right rear side upper surrounding bracing beam 306 and the right C-pillar lower section 3022 are connected into a first right oblique beam, thereby forming a force transmission path between the C-pillar ring and the D-pillar ring, which penetrates to the second top cover cross beam 104 and the first rear floor cross beam 203; therefore, the connection of the frame structure at the rear part of the vehicle body is more continuous, the stress is more balanced, and the improvement of the bending rigidity of the vehicle body, the mode of the vehicle body, the dynamic rigidity of the chassis attachment point and the like is facilitated.

In one embodiment, as shown in fig. 1 to 5, the upright ring structure of the vehicle body rear frame structure further includes a rear shock absorber main support ring; the rear floor frame assembly further comprises a third rear floor beam 205, the rear side wall frame assembly further comprises a first left rear side wall lower support beam 307 and a first right rear side wall lower support beam 308;

a third rear floor cross member 205 is located between the first rear floor cross member 203 and the second rear floor cross member 204, and is connected to the left rear longitudinal member 201 and the right rear longitudinal member 202;

the lower end of the left rear side wall upper supporting beam 305, the first left rear side wall lower supporting beam 307, the third rear floor beam 205, the first right rear side wall lower supporting beam 308 and the lower end of the right rear side wall upper supporting beam 306 are connected in sequence, and the second top cover beam 104, the left rear side wall upper supporting beam 305, the first left rear side wall lower supporting beam 307, the third rear floor beam 205, the first right rear side wall lower supporting beam 308 and the right rear side wall upper supporting beam 306 enclose and close to form a rear shock absorber main supporting ring.

The main support ring of the rear shock absorber is connected with the D-shaped column ring through a left rear side upper support beam 305 and a right rear side upper support beam 306, and plays a role in reinforcing the main support ring of the rear shock absorber and the D-shaped column ring; the ring plays an important role in improving the torsional rigidity and the mode of the vehicle body, and obviously improves the dynamic rigidity of the spring tower seat and the shock absorber installation area of the vehicle body.

Specifically, the left and right ends of the third rear floor cross beam 205 are connected to the left rear longitudinal beam 201 and the right rear longitudinal beam 202, respectively, and the upper and lower ends of the first left rear side wall lower supporting beam 307 are connected to the lower end of the left rear side wall upper supporting beam 305 and the left end of the third rear floor cross beam 205, respectively; more specifically, the lower end of the first left side back side bottom brace 307 may be directly connected to the left end of the third rear floor cross member 205, or may be indirectly connected to the left end of the third rear floor cross member 205 by connecting the left back longitudinal member 201 to a position opposite to the left end of the third rear floor cross member 205. The upper and lower ends of the first right rear side wall lower supporting beam 308 are connected to the lower end of the right rear side wall upper supporting beam 306 and the right end of the third rear floor cross beam 205, respectively; more specifically, the lower end of the first right rear side lower supporting beam 308 may be directly connected to the right end of the third rear floor cross beam 205, or may be indirectly connected to the right end of the third rear floor cross beam 205 by connecting the right rear longitudinal beam 202 at a position opposite to the right end of the third rear floor cross beam 205.

In an embodiment, as shown in fig. 1 to 6, the standing ring structure of the vehicle body rear frame structure further includes a rear shock absorber auxiliary support ring; the upper end of the first left rear side wall lower supporting beam 307 is further connected to the lower end of the left C column upper section 3011, the upper end of the first right rear side wall lower supporting beam 308 is further connected to the lower end of the right C column upper section 3021, and the first top cover beam 103, the left C column upper section 3011, the first left rear side wall lower supporting beam 307, the third rear floor beam 205, the first right rear side wall lower supporting beam 308 and the right C column upper section 3021 are enclosed to form the rear shock absorber auxiliary supporting ring.

The rear shock absorber auxiliary support ring is connected with the C column ring through a first left rear side wall lower support beam 307 and a first right rear side wall lower support beam 308, plays a role in enhancing the rear shock absorber auxiliary support ring and the C column ring, is connected with the D column ring through a left rear side wall upper support beam 305 and a right rear side wall upper support beam 306, and plays a role in enhancing the rear shock absorber auxiliary support ring and the D column ring; the ring is beneficial to improving the torsional rigidity and the mode of the vehicle body and the dynamic rigidity of the spring tower seat and the shock absorber installation area of the vehicle body.

Rear spring and shock absorber pass power path: the load is transmitted to the left rear side body upper supporting beam 305/the right rear side body upper supporting beam 306, the left C column upper section 3011/the right C column upper section 3021 through the first left rear side body lower supporting beam 307/the first right rear side body lower supporting beam 308, and then dispersed to the whole vehicle body, and is mainly supported by the rear shock absorber main supporting ring and the rear shock absorber auxiliary supporting ring, so that the rigidity and the strength of the vehicle body are ensured, and the overall deformation of the vehicle body is reduced.

In one embodiment, as shown in fig. 1 to 7, the upright ring structure of the vehicle body rear frame structure further includes a sub-frame main support ring; the rear floor frame assembly further comprises a fourth rear floor beam 206, the rear side wall frame assembly further comprises a second left rear side wall lower support beam 309 and a second right rear side wall lower support beam 310;

a fourth rear floor cross member 206 is located between the second rear floor cross member 204 and the third rear floor cross member 205, and is connected to the left rear longitudinal member 201 and the right rear longitudinal member 202;

the lower end of the left C-pillar upper section 3011, the second left rear side wall lower support beam 309, the fourth rear floor beam 206, the second right rear side wall lower support beam 310 and the lower end of the right C-pillar upper section 3021 are connected in sequence, and the first top cover beam 103, the left C-pillar upper section 3011, the second left rear side wall lower support beam 309, the fourth rear floor beam 206, the second right rear side wall lower support beam 310 and the right C-pillar upper section 3021 are enclosed to form an auxiliary frame main support ring. The ring plays a key role in improving the local rigidity and the dynamic rigidity of the auxiliary frame mounting point.

Specifically, the left and right ends of the fourth rear floor cross member 206 are connected to the left rear side member 201 and the right rear side member 202, respectively. The upper end and the lower end of the second left rear side wall lower supporting beam 309 are respectively connected to the lower end of the left C-pillar upper section 3011 and the left end of the fourth rear floor beam 206, more specifically, the lower end of the second left rear side wall lower supporting beam 309 is directly connected to the left end of the fourth rear floor beam 206, and the lower end of the second left rear side wall lower supporting beam 309 is directly connected to the position of the left rear longitudinal beam 201 right opposite to the left end of the fourth rear floor beam 206, so as to realize indirect connection to the left end of the fourth rear floor beam 206. The upper end and the lower end of the second right rear side wall lower supporting beam 310 are respectively connected to the lower end of the right C-pillar upper section 3021 and the right end of the fourth rear floor cross beam 206, more specifically, the lower end of the second right rear side wall lower supporting beam 310 is directly connected to the right end of the fourth rear floor cross beam 206, and the lower end of the second right rear side wall lower supporting beam 310 is directly connected to the right rear longitudinal beam 202 at a position right opposite to the right end of the fourth rear floor cross beam 206, so as to realize indirect connection to the right end of the fourth rear floor cross beam 206.

Preferably, as shown in fig. 1, the left C-pillar upper section 3011 and the second left rear side gusset lower support beam 309 are connected to form a second left oblique beam extending gradually backward from top to bottom, and the right C-pillar upper section 3021 and the second right rear side gusset lower support beam 310 are connected to form a second right oblique beam extending gradually backward from top to bottom. Therefore, a force transmission path penetrating to the first top cover cross beam 103 and the fourth rear floor cross beam 206 is formed between the C-shaped column ring and the auxiliary frame main support ring, so that the connection of the frame structure at the rear part of the vehicle body is more continuous, the stress is more balanced, and the improvement of the bending rigidity of the vehicle body, the mode of the vehicle body, the dynamic rigidity of a chassis attachment point and the like is facilitated.

In one embodiment, as shown in fig. 1 to 8, the upright ring structure of the vehicle body rear frame structure further includes a sub-frame auxiliary support ring; the upper end of the second left rear side wall lower supporting beam 309 is further connected to the lower end of the left rear side wall upper supporting beam 305, the upper end of the second right rear side wall lower supporting beam 310 is further connected to the lower end of the right rear side wall upper supporting beam 306, and the second top cover cross beam 104, the left rear side wall upper supporting beam 305, the second left rear side wall lower supporting beam 309, the fourth rear floor cross beam 206, the second right rear side wall lower supporting beam 310 and the right rear side wall upper supporting beam 306 are enclosed to form an auxiliary frame auxiliary supporting ring. This ring is connected sub vehicle frame main support ring and D ring through left rear side wall upper support beam 305 and right rear side wall upper support beam 306, plays the reinforcing effect to sub vehicle frame main support ring and D ring.

Sub vehicle frame passes power route: the load is transmitted to the left C pillar upper section 3011/right C pillar upper section 3021, the left rear side body upper support beam 305/right rear side body upper support beam 306 through the second left rear side body lower support beam 309/second right rear side body lower support beam 310, and then dispersed to the entire vehicle body, and is mainly supported by the sub-frame main support ring and the sub-frame auxiliary support ring, so that the rigidity and strength of the vehicle body are ensured, and the overall deformation of the vehicle body is reduced.

In one embodiment, as shown in fig. 1, the quarter frame assembly further comprises a third left quarter lower support beam 311 and a third right quarter lower support beam 312;

the third left rear side gusset lower support beam 311 is connected to the first left rear side gusset lower support beam 307, the second left rear side gusset lower support beam 309 and the left rear side rail 201;

the third right back side gusset down-support beam 312 is connected to the first right back side gusset down-support beam 308, the second right back side gusset down-support beam 310, and the right back side rail 202.

The first left rear side wall lower support beam 307, the second left rear side wall lower support beam 309 and the left rear longitudinal beam 201 are connected through the third left rear side wall lower support beam 311, the first right rear side wall lower support beam 308, the second right rear side wall lower support beam 310 and the right rear longitudinal beam 202 are connected through the third right rear side wall lower support beam 312, and the subframe rear point load is transmitted to the second left rear side wall lower support beam 309/the second right rear side wall lower support beam 310, the first left rear side wall lower support beam 307/the first right rear side wall lower support beam 308 through the third left rear side wall lower support beam 311/the third right rear side wall lower support beam 312, then transmitted to the left C column upper section 3011/the right C column upper section 3021, the left rear side wall upper support beam 305/the right rear side wall upper support beam 306, then dispersed to the whole vehicle body, thereby ensuring the rigidity and the strength of the vehicle body and reducing the overall deformation of the vehicle body.

Specifically, both ends of the third left rear side wall lower support beam 311 are connected to the first left rear side wall lower support beam 307 and the left rear longitudinal beam 201, respectively, and one end of the third left rear side wall lower support beam 311 connected to the left rear longitudinal beam 201 is located between the second rear floor cross beam 204 and the fourth rear floor cross beam 206.

The third left rear side wall lower support beam 311 may include a left lower support beam front section 3111 and a left lower support beam rear section 3112, the front end of the left lower support beam front section 3111 is connected to the first left rear side wall lower support beam 307, the rear end is connected to the second left rear side wall lower support beam 309, the front end of the left lower support beam rear section 3112 is connected to the second left rear side wall lower support beam 309, and the rear end is connected to the left rear side wall 201. The front section 3111 and the rear section 3112 of the left lower supporting beam may be two separate parts or may be an integral part.

Specifically, two ends of the third right rear side wall lower support beam 312 are respectively connected to the first right rear side wall lower support beam 308 and the right rear longitudinal beam 202, and one end of the third right rear side wall lower support beam 312 connected to the right rear longitudinal beam 202 is located between the second rear floor cross beam 204 and the fourth rear floor cross beam 206.

The third right rear side gusset lower support beam 312 may include a right lower support beam front section and a right lower support beam rear section, the front end of the right lower support beam front section is connected to the first right rear side gusset lower support beam 308, the rear end is connected to the second right rear side gusset lower support beam 310, the front end of the right lower support beam rear section is connected to the second right rear side gusset lower support beam 310, and the rear end is connected to the right rear longitudinal beam 202. The front section of the right lower supporting beam and the rear section of the right lower supporting beam can be two split parts or can be an integral part.

In one embodiment, as shown in fig. 1, the roof frame assembly further includes a roof left stiffening beam 105 and a roof right stiffening beam 106;

the roof left reinforcing beam 105 is located behind the first roof cross beam 103, extends from front to back gradually to the right, specifically can be bent or linearly extend from front to back gradually to the right, and two ends of the roof left reinforcing beam 105 are respectively connected to the roof left side beam 101 and the second roof cross beam 104;

the roof right reinforcement beam 106 is located behind the first roof cross beam 103, extends gradually leftward from front to back, specifically may gradually curve or linearly extend leftward from front to back, and has two ends connected to the roof right side beam 102 and the second roof cross beam 104, respectively. The four-side frame structure formed by the top cover left side beam 101, the first top cover cross beam 103, the top cover right side beam 102 and the second top cover cross beam 104 is reinforced through the top cover left reinforcing beam 105 and the top cover right reinforcing beam 106, so that the load is dispersed conveniently, and the strength and the rigidity of the top cover frame assembly are improved.

In one embodiment, as shown in FIG. 1, the quarter frame assembly further comprises a left quarter cross member 313 and a right quarter cross member 314;

the left rear side wall cross beam 313 is positioned below the top cover left side beam 101 and above the left rear longitudinal beam 201, and two ends of the left rear side wall cross beam are respectively connected to the second left rear side wall lower supporting beam 309 and the rear tail frame left side beam 303;

right rear side wall cross member 314 is positioned below top cover right side member 102 and above right rear side member 202 and is connected at its ends to second right rear side wall lower support member 310 and rear tail frame right side member 304, respectively. Through the left rear side wall cross beam 313 and the right rear side wall cross beam 314, a supporting function is realized between the second left rear side wall lower support beam 309 and the rear tail frame left side beam 303 and between the second right rear side wall lower support beam 310 and the rear tail frame right side beam 304, and meanwhile, a force transmission path is increased, so that the load born by the rear tail frame left side beam 303 and the rear tail frame right side beam 304 can be forwards transmitted to the second left rear side wall lower support beam 309 and the second right rear side wall lower support beam 310 and can be redispersed to the whole vehicle body, and the load born by the second left rear side wall lower support beam 309 and the second right rear side wall lower support beam 310 can be backwards transmitted to the rear tail frame left side beam 303 and the rear tail frame right side beam 304 and can be redispersed to the whole vehicle body, so that the strength and the rigidity of the vehicle body are ensured, and the overall deformation of the.

In one embodiment, as shown in fig. 1, a rear tail frame lower cross beam 4 is further included, the rear tail frame lower cross beam 4 is located below the second roof cross beam 104 and above the second rear floor cross beam 204, and both ends of the rear tail frame lower cross beam are respectively connected to a rear tail frame left side beam 303 and a rear tail frame right side beam 304, so that D-pillar reinforcement is achieved through the rear tail frame lower cross beam 4.

In an embodiment, as shown in fig. 1, a rear impact beam 5 is further included, the rear impact beam 5 is located behind the second rear floor cross beam 204, and two ends of the rear impact beam are respectively connected to the left rear longitudinal beam 201 and the right rear longitudinal beam 202, so that the rear impact safety performance is improved.

Wherein, all elements of the frame structure at the rear part of the vehicle body can be connected together by adopting the forms of welding, riveting or screwing and the like, thereby forming an integral frame structure with reasonable strength.

Through aforementioned automobile body rear portion frame construction, form the overall frame construction that the ring detained mutually, guarantee automobile body overall rigidity and NVH performance, aim at the vehicle body chassis load and pass the power condition simultaneously, pointed biography power route design, through the enhancement of loop configuration, reduce the impact of chassis to the automobile body, chassis load transmission is reasonable, helps platformization and lightweight.

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 (10)

1. A rear frame structure of a vehicle body comprises a top cover frame assembly, a rear floor frame assembly and a rear side wall frame assembly, wherein the rear frame structure of the vehicle body is provided with a plurality of vertical ring structures, and each vertical ring structure is formed by connecting a cross beam of the top cover frame assembly, a cross beam of the rear floor frame assembly and a beam column extending up and down of the rear side wall frame assembly; the method is characterized in that: at least two stand ring structures are arranged at intervals, the at least two stand ring structures are intersected at the rear side wall frame assembly, and the at least two stand ring structures arranged at intervals are connected through another stand ring structure.

2. The vehicle body rear frame structure according to claim 1, characterized in that: the upright ring structure of the frame structure at the rear part of the vehicle body comprises a C-shaped column ring, a D-shaped column ring and a CD-shaped column connecting ring, two beams which are arranged at intervals in the front and at the back of the top cover frame assembly respectively form a top beam of the C-shaped column ring and a top beam of the D-shaped column ring, the upper end of the CD-shaped column connecting ring is connected with the D-shaped column ring, and the lower end of the CD-shaped column connecting ring is connected with the C-.

3. The vehicle body rear frame structure according to claim 2, characterized in that: the top cover frame assembly comprises a top cover left side beam, a top cover right side beam, a first top cover cross beam and a second top cover cross beam, and the first top cover cross beam and the second top cover cross beam are connected to the top cover left side beam and the top cover right side beam; the rear floor frame assembly comprises a left rear longitudinal beam, a right rear longitudinal beam, a first rear floor cross beam and a second rear floor cross beam, and the first rear floor cross beam and the second rear floor cross beam are connected to the left rear longitudinal beam and the right rear longitudinal beam; the rear side wall frame assembly comprises a left C column, a right C column, a rear tail frame left side beam, a rear tail frame right side beam, a left rear side wall upper supporting beam and a right rear side wall upper supporting beam;

the left end of the first top cover beam, the left C column, the first rear floor beam, the right C column and the right end of the first top cover beam are sequentially connected, and the first top cover beam, the left C column, the first rear floor beam and the right C column surround to form a C column ring;

the left end of the second top cover beam, the rear tail frame left side beam, the second rear floor beam, the rear tail frame right side beam and the right end of the second top cover beam are sequentially connected, and the second top cover beam, the rear tail frame left side beam, the second rear floor beam and the rear tail frame right side beam are enclosed to form the D-shaped column ring;

the left rear side upper supporting beam and the right rear side upper supporting beam are connected to the C column ring and the D column ring and enclose with the local part of the C column ring and the local part of the D column ring to form the CD column connecting ring.

4. The vehicle body rear frame structure according to claim 3, characterized in that: the left C column comprises a left C column upper section and a left C column lower section which are connected with each other, and the right C column comprises a right C column upper section and a right C column lower section which are connected with each other; the upper and lower ends of the left rear side wall upper supporting beam are respectively connected to the left end of the second top cover beam and the upper end of the left C column lower section, the upper and lower ends of the right rear side wall upper supporting beam are respectively connected to the right end of the second top cover beam and the upper end of the right C column lower section, and the second top cover beam, the left rear side wall upper supporting beam, the left C column lower section, the first rear floor beam, the right C column lower section and the right rear side wall upper supporting beam are enclosed to form a CD column connecting ring.

5. The vehicle body rear frame structure according to claim 4, characterized in that: the upper section of the left C column gradually extends backwards from top to bottom, the lower section of the left C column gradually extends forwards from top to bottom, and the upper section of the left C column and the lower section of the left C column are connected to form a curved column which is arched backwards; the left rear side wall upper supporting beam gradually extends forwards from top to bottom, and the left rear side wall upper supporting beam and the left C column lower section are connected into a first left oblique beam;

the upper section of the right C column gradually extends backwards from top to bottom, the lower section of the right C column gradually extends forwards from top to bottom, and the upper section of the right C column and the lower section of the right C column are connected to form a curved column which is arched backwards; the right rear side wall upper supporting beam gradually extends forwards from top to bottom, and the right rear side wall upper supporting beam and the right C column lower section are connected into a first right oblique beam.

6. The vehicle body rear frame structure according to claim 5, characterized in that: the vertical ring structure of the frame structure at the rear part of the vehicle body further comprises a main support ring of a rear shock absorber;

the rear floor frame assembly further comprises a third rear floor beam, and the rear side wall frame assembly further comprises a first left rear side wall lower supporting beam and a first right rear side wall lower supporting beam;

the third rear floor cross member is positioned between the first rear floor cross member and the second rear floor cross member and is connected to the left rear longitudinal beam and the right rear longitudinal beam;

the lower extreme of left side back side wall upper beam first left side back side wall is supporting the roof beam down the floor crossbeam behind the third first right side back side wall is supporting the roof beam down with the lower extreme that the roof beam was supported on the right side rear side wall connects gradually, second top cap crossbeam left side back side wall upper beam first left side back side wall is supporting the roof beam down the floor crossbeam behind the third first right back side wall is supporting the roof beam down with right side back side wall is supporting the roof beam and encloses to close and form back bumper shock absorber main tributary supporting ring.

7. The vehicle body rear frame structure according to claim 6, characterized in that: the vertical ring structure of the frame structure at the rear part of the vehicle body further comprises an auxiliary support ring of a rear shock absorber;

the upper end of first left side rear side wall is propped down the roof beam still connect in the lower extreme of left side C post upper segment, the upper end of first right rear side wall is propped down the roof beam still connect in the lower extreme of right side C post upper segment, first top cap crossbeam left side C post upper segment first left side rear side wall is propped down the roof beam third rear floor crossbeam first right rear side wall is propped down the roof beam with right side C post upper segment is enclosed and is closed the formation the support ring is assisted to the rear shock absorber.

8. The vehicle body rear frame structure according to claim 6, characterized in that: the vertical ring structure of the vehicle body rear frame structure further comprises an auxiliary frame main support ring;

the rear floor frame assembly further comprises a fourth rear floor beam, and the rear side wall frame assembly further comprises a second left rear side wall lower supporting beam and a second right rear side wall lower supporting beam;

the fourth rear floor cross member is positioned between the second rear floor cross member and the third rear floor cross member and is connected to the left rear longitudinal beam and the right rear longitudinal beam;

the lower extreme of left side C post upper segment the side wall is back-supported roof beam under the second left side the floor crossbeam behind the fourth the side wall is back-supported roof beam under the second right side with the lower extreme of right side C post upper segment connects gradually, first top cap crossbeam left side C post upper segment the side wall is back-supported roof beam under the second left side back floor crossbeam the side wall is back-supported roof beam under the second right side back side and the right side C post upper segment encloses to close and forms sub vehicle frame main tributary supporting ring.

9. The vehicle body rear frame structure according to claim 8, characterized in that: the vertical ring structure of the frame structure at the rear part of the vehicle body further comprises an auxiliary support ring of an auxiliary frame;

the upper end of the second left rear side wall lower supporting beam is connected with the lower end of the left rear side wall upper supporting beam, the upper end of the second right rear side wall lower supporting beam is connected with the lower end of the right rear side wall upper supporting beam, the second top cover beam is connected with the left rear side wall upper supporting beam, the second left rear side wall lower supporting beam, the fourth rear floor beam, the second right rear side wall lower supporting beam and the right rear side wall upper supporting beam surrounding and closing to form the auxiliary frame auxiliary supporting ring.

10. The vehicle body rear frame structure according to claim 8, characterized in that: the left C column upper section and the second left rear side wall lower supporting beam are connected into a second left oblique beam which gradually extends backwards from top to bottom, and the right C column upper section and the second right rear side wall lower supporting beam are connected into a second right oblique beam which gradually extends backwards from top to bottom; the rear side wall frame assembly further comprises a third left rear side wall lower supporting beam and a third right rear side wall lower supporting beam;

the third left rear side wall lower support beam is connected to the first left rear side wall lower support beam, the second left rear side wall lower support beam and the left rear longitudinal beam;

the third right rear side wall lower support beam is connected with the first right rear side wall lower support beam, the second right rear side wall lower support beam and the right rear longitudinal beam.

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