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CN-122009342-A - Integrated rear floor and vehicle

CN122009342ACN 122009342 ACN122009342 ACN 122009342ACN-122009342-A

Abstract

The invention provides an integrated rear floor and a vehicle. The integrated rear floor comprises a rear plate body, a rear cross beam and a rear extension beam, wherein the rear extension beam is connected with at least one of the rear plate body and the rear cross beam, at least part of the rear extension beam extends along the length direction of the rear floor, the rear extension beam comprises two side connecting plates and a bottom connecting plate, at least one machining groove is formed in at least one of the two side connecting plates which are oppositely arranged, the inner surface of the side connecting plate which is provided with the machining groove facing one side of the installation space and the outer surface of the side far away from the installation space are arranged at an angle, the machining groove is formed in the outer surface, the plane of the groove bottom of the machining groove is parallel to the inner surface, a pattern drawing platform is arranged in at least one machining groove, at least part of the pattern drawing platform extends along the circumferential direction of the connecting hole, and the pattern drawing platform and the inner surface are arranged at an angle. The problem that the linking wall machining efficiency of floor and back longeron is low and the quality is relatively poor after among the prior art has been solved to this scheme.

Inventors

  • ZHOU LIGONG
  • ZHOU HONG
  • CAO JI
  • FENG HAIZHOU
  • SHI LIJUN
  • DAI JUNLIANG

Assignees

  • 一汽铸造有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (11)

  1. 1. An integrated rear floor board, which is characterized in that, characterized by comprising the following steps: A rear plate body (10); the rear cross beam (20), the said rear cross beam (20) connects with said back plate body (10); The rear extension beam (30), the rear extension beam (30) is connected with at least one of the rear plate body (10) and the rear cross beam (20), at least part of the rear extension beam (30) extends along the length direction of the rear floor, the rear extension beam (30) comprises two side connecting plates (31) and a bottom connecting plate (32), two sides of the bottom connecting plate (32) are respectively connected with one side connecting plate (31) to form an installation space (300), the two side connecting plates (31) are oppositely arranged along the width direction of the rear floor, a plurality of connecting holes (310) are formed in the side connecting plates (31), at least one machining groove (33) is formed in at least one of the two oppositely arranged side connecting plates (31), and part of the connecting holes (310) are formed in the groove bottom of the machining groove (33); Wherein, set up add groove (33) the side connecting plate (31) orientation mounting space (300) one side internal surface (311) with keep away from between surface (312) on mounting space (300) one side has the angle setting, add groove (33) set up on surface (312), the plane that the tank bottom of machine add groove (33) place with internal surface (311) are parallel, at least one be provided with in the machine add groove (33) pattern drawing platform (330), at least part pattern drawing platform (330) are followed the circumference extension of connecting hole (310), pattern drawing platform (330) with have the angle setting between internal surface (311).
  2. 2. The integrated rear floor according to claim 1, characterized in that the rear panel body (10) is integrally cast with the rear cross member (20), the rear extension beam (30).
  3. 3. The integrated rear floor according to claim 1 or 2, characterized in that the distance between the inner surface (311) and the outer surface (312) is arranged gradually increasing from top to bottom in the rear floor height direction, and the distance between the drawing platform (330) and the plane in which the bottom of the machining groove (33) is located is arranged gradually increasing from top to bottom in the rear floor height direction.
  4. 4. A rear integrated floor according to claim 3, characterized in that the distance between the inner surface (311) and the outer surface (312) is D, the distance between the drawing platform (330) and the plane of the bottom of the machined groove (33) is H, wherein 0.8 d≤h≤0.82D.
  5. 5. The integrated rear floor as claimed in claim 4, wherein, along the height direction of the rear floor, a first machining groove (331) is formed in an end of the side connecting plate (31) provided with the machining groove (33) away from the bottom connecting plate (32), a second machining groove (332) is formed in an end of the side connecting plate (31) provided with the machining groove (33) close to the bottom connecting plate (32), the first machining groove (331) and the second machining groove (332) are arranged at intervals along the height direction of the rear floor, wherein, the die drawing platform (330) is arranged in the second machining groove (332), and the die drawing platform (330) is connected with the groove wall of the second machining groove (332).
  6. 6. The integrated rear floor according to claim 5, characterized in that an angle α is present between the inner surface (311) and the outer surface (312), wherein 5.8 ° - α -6.2 °, and/or an angle β is present between the inner surface (311) and a vertical plane perpendicular to the horizontal plane direction, and an angle γ is present between the outer surface (312) and a vertical plane perpendicular to the horizontal plane direction, wherein 2.8 ° - β -3.2 °,2.8 ° - γ -3.2 °.
  7. 7. The integrated rear floor according to claim 6, characterized in that the draft platform (330) has an angle δ with the plane of the groove bottom of the second machined groove (332), wherein δ is 3.8 ° -4.2 °.
  8. 8. The integrated rear floor of claim 7, wherein the draft angle of the plane in which the draft platform (330) is located is 0.8 ° -1.2 °, and the draft angle of the outer surface (312) is 2.8 ° -3.2 °.
  9. 9. The integrated rear floor according to any one of claims 1,2, 4-8, characterized in that two side connection plates (31) located at both sides of the same installation space (300) are parallel with both side surfaces of one side connection plate (31), and both sides of the other side connection plate (31) form the inner surface (311) and the outer surface (312), respectively.
  10. 10. The integrated rear floor according to any of the claims 5-7, characterized in that the geometrical centre line of the axial direction of the connection hole (310) in the second machined groove (332) is perpendicular to the inner surface (311).
  11. 11. A vehicle, characterized in that the vehicle has an integrated rear floor, the integrated rear floor is the integrated rear floor of any one of claims 1-10.

Description

Integrated rear floor and vehicle Technical Field The invention relates to the technical field of vehicle part manufacturing, in particular to an integrated rear floor and a vehicle. Background The integrated rear floor is generally not integrated with the whole section of the rear longitudinal beam during integration, but a part of the longitudinal beam at the rearmost end is made into a split structure and is connected with the integrated floor through bolts so as to consider maintenance economy. Because the casting is required to have demoulding inclination, two side surfaces of the connecting wall are not parallel, and in order to ensure reliable fastening of the bolts, the contact surface of the bolt head on one side is required to be machined so as to realize the purpose that the two side surfaces are perpendicular to the axis of the bolt hole. However, the connecting wall belongs to a thin-wall structure, has insufficient rigidity, is easy to deform and vibrate during processing, and has low processing efficiency and difficult quality assurance. In view of the above technical problems, no effective solution has been proposed at present. Disclosure of Invention The invention mainly aims to provide an integrated rear floor and a vehicle, which are used for solving the problems of low processing efficiency and poor quality of a connecting wall of the integrated rear floor and a rear longitudinal beam in the prior art. In order to achieve the above object, according to one aspect of the present invention, there is provided an integrated rear floor comprising a rear plate body, a rear cross member connected to the rear plate body, a rear extension beam connected to at least one of the rear plate body and the rear cross member, at least part of the rear extension beam extending in the longitudinal direction of the rear floor, the rear extension beam comprising two side connection plates and a bottom connection plate, both sides of the bottom connection plate being connected to one side connection plate to form an installation space, the two side connection plates being disposed opposite to each other in the width direction of the rear floor, the side connection plates being provided with a plurality of connection holes, at least one of the two opposite side connection plates being provided with at least one machine slot, part of the connection holes being provided with a slot bottom of the machine slot, wherein the inner surface of the side connection plate provided with the machine slot facing the installation space and the outer surface of the side remote from the installation space being provided with an angle therebetween, the plane of the slot bottom of the machine slot being parallel to the inner surface, at least one machine slot being provided with a die-drawing platform, the at least part of the machine slot being provided with a die-drawing platform extending in the circumferential direction between the connection holes and the inner surface of the die-drawing platform. Further, the rear plate body, the rear cross beam and the rear extension beam are integrally cast and formed. Further, the distance between the inner surface and the outer surface is gradually increased from top to bottom along the height direction of the rear floor, and the distance between the pattern drawing platform and the plane where the bottom of the machined groove is located is gradually increased from top to bottom along the height direction of the rear floor. Further, the distance between the inner surface and the outer surface is D, and the distance between the drawing platform and the plane where the bottom of the machined groove is positioned is H, wherein H is more than or equal to 0.8D and less than or equal to 0.82D. Further, along the height direction of the rear floor, a first machining groove is formed in one end, far away from the bottom connecting plate, of the side connecting plate provided with the organic groove, a second machining groove is formed in one end, close to the bottom connecting plate, of the side connecting plate provided with the organic groove, the first machining groove and the second machining groove are arranged at intervals along the height direction of the rear floor, a drawing platform is arranged in the second machining groove, and the drawing platform is connected with the groove wall of the second machining groove. Further, there is an angle α between the inner surface and the outer surface, wherein 5.8 β≤6.2 °, and/or there is an angle β between the inner surface and a vertical plane perpendicular to the horizontal plane direction, and there is an angle γ between the outer surface and a vertical plane perpendicular to the horizontal plane direction, wherein 2.8 β≤3.2 °,2.8 ° γltoreq.3.2 °. Further, an angle delta is formed between the drawing platform and a plane where the bottom of the second machining groove is located, wherein delta is more than or equal to 3.8 degrees and less