CN213442782U - Automobile front door ring and automobile - Google Patents
Automobile front door ring and automobile Download PDFInfo
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- CN213442782U CN213442782U CN202022437475.0U CN202022437475U CN213442782U CN 213442782 U CN213442782 U CN 213442782U CN 202022437475 U CN202022437475 U CN 202022437475U CN 213442782 U CN213442782 U CN 213442782U
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Abstract
The utility model discloses an automobile front door ring, which comprises an automobile A column comprising an A column upper section and an A column lower section, wherein the A column upper section is provided with a first soft area used for being welded with a roof beam; an automobile B column comprising an upper B column section and a lower B column section; front doorsills of which the front and rear ends are respectively fixed with the rear side of the lower part of the A column and the front side of the lower part of the B column; a rear threshold fixed to the rear side of the lower section of the B-pillar; the first soft area part is removed from the upper section of the A column, the lower section of the A column, the upper section of the B column, the front threshold and the rear threshold are all hard areas, and the lower section of the B column is a second soft area. The utility model also discloses a manufacturing method of above-mentioned car front door ring and the car including above-mentioned car front door ring. The utility model provides a car qianmen ring and manufacturing method and car, car A post and roof crossbeam are difficult for taking place the fracture, and qianmen ring cushioning nature is good, collapsible energy-absorbing when taking place the striking to can control qianmen ring and warp, do benefit to the protection driver and crew head, the security is good.
Description
Technical Field
The utility model relates to an automobile manufacturing field especially relates to car front door ring and car.
Background
The automobile front door ring is an important structural part forming an automobile body framework, and is formed by sequentially connecting an automobile A column, an automobile B column and a front threshold end to end in a surrounding mode. In present automobile manufacturing, in order to improve the strength of automobile body, automobile A post, automobile B post and front doorsill all adopt the rigid plate of superhigh intensity, and current automobile front door ring mainly has following problem:
1. when the automobile collides, accidents such as rollover and the like are easy to happen due to the fact that the integral strength of the automobile body is high and the buffer type is not good;
2. because the whole automobile front door ring is a rigid plate, the front door ring is deformed and damaged uncontrollably when being impacted, and if the upper part of the front door ring is seriously deformed or broken, the head of a driver and passengers can be fatally injured, and the automobile safety is poor;
3. the two ends of the roof beam are respectively welded with the automobile A columns on the left side and the right side of the automobile body, the automobile A columns and the roof beam are directly welded through rigid plates, low-strength areas are easily formed in welding spot areas, when collision occurs, the welding spot areas of the automobile A columns and the roof beam are easily cracked, the cracked automobile A columns and the roof beam easily cause fatal damage to drivers and passengers, and the safety is poor;
4. existing automotive front door rings are made from a single piece product of: the automobile A column, the automobile B column, the front doorsill and other parts are welded and assembled, different dies and processes are needed for manufacturing the parts independently, the cost is high, and the processes are complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a car qianmen ring and car, car A post and roof crossbeam are difficult for taking place the fracture, and qianmen ring cushioning nature is good, collapsible energy-absorbing when taking place the striking to can control qianmen ring deformation region, do benefit to the protection driver and crew head, the security is good, and the process is simple, and is with low costs.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an automobile front door ring, which comprises,
the automobile A column comprises an A column upper section and an A column lower section, wherein the lower end of the A column upper section is fixed with the A column lower section, and the A column upper section is provided with a first soft area used for being welded with a roof beam;
the automobile B column comprises an upper B column section and a lower B column section, wherein the upper end of the upper B column section is fixed with the upper A column section, and the lower end of the upper B column section is fixed with the upper end of the lower B column section;
the front end and the rear end of the front doorsill are respectively fixed with the rear side of the lower part of the A-pillar and the front side of the lower part of the B-pillar;
a rear threshold fixed to a rear side of a lower portion of the column B;
the upper section of the column A except the first soft area part, the lower section of the column A, the upper section of the column B, the front threshold and the rear threshold are all hard areas, and the lower section of the column B is a second soft area.
The utility model has the advantages that: the upper section of the A column is welded with the roof beam through the first soft area, so that the toughness of a welding spot area is improved, the stress concentration at the welding spot is reduced, the first soft area absorbs energy during collision, the upper section of the A column and the roof beam are not easy to crack, and the damage of broken A column and the roof beam of the automobile to drivers and passengers is avoided; the safety is good; the lower section of the B column is a second soft area, so that the energy can be contracted and absorbed when collision occurs, the instantaneous impact is reduced, the injury to drivers and passengers is reduced, and meanwhile, the rollover accident caused by the overlarge instantaneous impact energy when the overall strength is too high can be avoided; after the lower section of the B column contracts and absorbs energy, the lower section of the A column connected with the front doorsill deforms towards the lower section of the B column, the first soft area of the upper section of the A column is beneficial to the flexible swing of the A column of the automobile, the upper space of a front door ring can be ensured as much as possible, and the upper part of the front door ring is prevented from deforming or damaging to the head of a driver or passenger; the front door ring has good buffering property, can be contracted to absorb energy when being impacted, can control the deformation of the front door ring, and is beneficial to protecting the heads of drivers and passengers; the first soft area part, the A column lower section, the B column upper section, the front doorsill and the rear doorsill are removed from the A column upper section, and all the hard areas can ensure the strength of a vehicle body and have high integral safety coefficient.
Further, the upper section of the column a, the lower section of the column a, the upper section of the column B, the lower section of the column B, the front doorsill and the rear doorsill are integrally formed by punching.
The beneficial effect of adopting the further scheme is that: in the prior art, each part of an upper section of a column A, a lower section of the column A, an upper section of a column B, a lower section of the column B, a front threshold, a rear threshold and the like needs to be manufactured independently, all parts are spliced after being manufactured, the manufacturing of each part corresponds to different dies and working procedures, multiple times of stamping is needed, the cost is high, and the working procedures are complex; the upper section of the column A, the lower section of the column A, the upper section of the column B, the lower section of the column B, the front doorsill and the rear doorsill are integrally formed through stamping, the stamping times can be reduced, only one group of dies is needed, the stamping die is more economical, all parts of the front door ring integrally formed through stamping are fixed more stably, and the possibility of cracking can be reduced.
Further, the automobile A column further comprises a first reinforcing patch plate and a second reinforcing patch plate, the first reinforcing patch plate is integrally formed with the upper section of the A column through a local reinforcing area of the upper section of the A column in a stamping mode, the second reinforcing patch plate is integrally formed with the lower section of the A column through a local reinforcing area of the lower section of the A column in a stamping mode, the automobile B column further comprises a third reinforcing patch plate, and the third reinforcing patch plate is integrally formed with the upper section of the B column through a local reinforcing area of the upper section of the B column in a stamping mode.
The beneficial effect of adopting the further scheme is that: because some parts on the automobile A column and the automobile B column need local reinforcement, in the existing automobile manufacturing, a method of welding parts such as cold stamping reinforcements and the like at the positions needing the local reinforcement is often adopted for realizing, the automobile A column and the automobile B column which are welded with the cold stamping reinforcements are heavy in weight, the connecting areas of the parts such as the cold stamping reinforcements and the like which are welded during collision are easy to crack, the cracked cold stamping reinforcements are easy to cause injury to drivers and passengers, and in addition, tools such as dies, clamps and the like need to be additionally manufactured for manufacturing the cold stamping reinforcements, so that the production cost is high, and the production efficiency is low; the first reinforcing patch plate, the second reinforcing patch plate and the third reinforcing patch plate are arranged on the upper section of the A column, the lower section of the A column and the upper section of the B column respectively to improve the local strength of the upper sections of the A column and the B column of the automobile, so that different strength requirements of the automobile body on each area can be met, the strength of the upper sections of the A column and the B column of the automobile is high, other cold stamping reinforcing parts do not need to be welded, only the local reinforcing areas are provided with the first reinforcing patch plate, the second reinforcing patch plate or the third reinforcing patch plate, the weight is light, other tools do not need to be additionally designed and manufactured, and the automobile is not easy to crack and high in safety coefficient by stamping and integral forming; the first reinforcing patch board, the second reinforcing patch board and the third reinforcing patch board can adopt leftover materials for manufacturing other parts of the front door ring, and the utilization rate of raw materials is high.
Furthermore, the lower section of the B-pillar is in an inverted T shape, the protruding end part of the lower section of the B-pillar on the front side is fixed with the front threshold, and the protruding end part of the lower section of the B-pillar on the rear side is used for being fixed with the rear threshold.
The beneficial effect of adopting the further scheme is that: the lower section of the B column is conveniently connected and fixed with the front doorsill and the rear doorsill, the buffering energy absorption area is long, the energy absorption effect is good, and the impact of the front doorsill on the rear doorsill can be reduced when collision occurs.
Furthermore, an included angle between the horizontal section and the vertical section of the lower section of the B column is in arc surface transition.
The beneficial effect of adopting the further scheme is that: when the automobile is impacted, the automobile slowly deforms along the cambered surface, so that the buffering performance can be improved, the deformation quantity can be reduced, and the safety is improved.
Further, the first soft zone is formed by laser tempering and softening the area of the A column upper section for welding with the roof cross beam.
The beneficial effect of adopting the further scheme is that: the laser tempering softening of the upper section of the column A is directly carried out to form a first soft area, the production is convenient, no additional component is needed, no middle welding material is needed, the weight reduction is facilitated, and the welding times are reduced.
Further, the yield strength of the upper section of the column A except the first soft area part, the lower section of the column A, the upper section of the column B, the front threshold and the rear threshold is 950-1300 MPa, the tensile strength is 1300-1650 MPa, the tensile test A80 is more than or equal to 4.5%, and the hardness is 400-520 HV; the yield strength of the lower section of the column B is 400-550 MPa, the tensile strength is 600-800 MPa, the tensile test A80 is more than or equal to 10%, and the hardness is 160-235 HV; the yield strength of the first soft zone is 600-750 MPa, the tensile strength is 800-950 MPa, the tensile test A80 is more than or equal to 6%, and the hardness is 160-300 HV.
The beneficial effect of adopting the further scheme is that: the first soft area part, the A column lower section, the B column upper section, the front doorsill and the rear doorsill are removed from the A column upper section, the strength is high, enough stability can be provided, the B column lower section and the toughness are large, contraction energy absorption and deformation control of the front door ring when the front door ring is impacted are facilitated, the strength and the toughness are both considered in the first soft area, cracking of a welding spot area is facilitated to be prevented, the automobile A column can swing, and the space of the upper portion of the front door ring is facilitated to be kept.
Further, the thickness of the lower section of the column A is smaller than that of the upper section of the column A, the thickness of the front doorsill is smaller than that of the upper section of the column B, and the thicknesses of the upper section of the column B and the lower section of the column B are the same.
The beneficial effect of adopting the further scheme is that: the thickness of each position is different, satisfies the intensity needs of automobile body different positions, does benefit to the automobile body and subtracts heavy under the circumstances of guaranteeing intensity.
The utility model discloses an automobile, including foretell automobile front door ring.
The utility model has the advantages that: the upper section of the A column is welded with the roof beam through the first soft area, so that the toughness of a welding spot area is improved, the stress concentration at the welding spot is reduced, the first soft area absorbs energy during collision, the upper section of the A column and the roof beam are not easy to crack, and the damage of broken A column and the roof beam of the automobile to drivers and passengers is avoided; the safety is good; the lower section of the B column is a second soft area, so that the energy can be contracted and absorbed when collision occurs, the instantaneous impact is reduced, the injury to drivers and passengers is reduced, and meanwhile, the rollover accident caused by the overlarge instantaneous impact energy when the overall strength is too high can be avoided; after the lower section of the B column contracts and absorbs energy, the lower section of the A column connected with the front doorsill deforms towards the lower section of the B column, the first soft area of the upper section of the A column is beneficial to the flexible swing of the A column of the automobile, the upper space of a front door ring can be ensured as much as possible, and the upper part of the front door ring is prevented from deforming or damaging to the head of a driver or passenger; the front door ring has good buffering property, can be contracted to absorb energy when being impacted, can control the deformation of the front door ring, and is beneficial to protecting the heads of drivers and passengers; the first soft area part, the A column lower section, the B column upper section, the front doorsill and the rear doorsill are removed from the A column upper section, and all the hard areas can ensure the strength of a vehicle body and have high integral safety coefficient.
The utility model discloses a manufacturing method of automobile front door ring, including the step:
fixedly connecting plates for manufacturing an upper section of a B column, a lower section of the B column, a front doorsill, a rear doorsill, a lower section of the A column and an upper section of the A column to form a front door ring blank, wherein the plates for manufacturing the upper section of the B column, the front doorsill, the rear doorsill, the lower section of the A column and the upper section of the A column are made of hard zone materials, and the plate for manufacturing the lower section of the B column is made of a second soft zone material;
stamping the front door ring blank to integrally form the upper section of the B column, the lower section of the B column, the front doorsill, the rear doorsill, the lower section of the A column and the upper section of the A column;
and softening the area of the upper section of the A column, which is used for welding with the roof cross beam, after the stamping is finished to form a first soft area.
The utility model has the advantages that: the upper section of the A column is welded with the roof beam through the first soft area, so that the toughness of a welding spot area is improved, the stress concentration at the welding spot is reduced, the first soft area absorbs energy during collision, the upper section of the A column and the roof beam are not easy to crack, and the damage of broken A column and the roof beam of the automobile to drivers and passengers is avoided; the safety is good; the lower section of the B column is made of a second soft area material, so that the B column can contract to absorb energy when collision occurs, the instantaneous impact is reduced, the injury to drivers and passengers is reduced, and meanwhile, the rollover accident caused by the overlarge instantaneous impact energy when the overall strength is too high can be avoided; after the lower section of the B column contracts and absorbs energy, the lower section of the A column connected with the front doorsill deforms towards the lower section of the B column, the first soft area of the upper section of the A column is beneficial to the flexible swing of the A column of the automobile, the upper space of a front door ring can be ensured as much as possible, and the upper part of the front door ring is prevented from deforming or damaging to the head of a driver or passenger; the front door ring has good buffering property, can be contracted to absorb energy when being impacted, can control the deformation of the front door ring, and is beneficial to protecting the heads of drivers and passengers; the first soft area part of the upper section of the A column, the lower section of the A column, the upper section of the B column, the front doorsill and the rear doorsill are all hard areas, so that the strength of a vehicle body can be ensured, and the overall safety coefficient is high; after the front door ring blank is fixedly formed by plates for manufacturing the upper section of the A column, the lower section of the A column, the upper section of the B column, the lower section of the B column and the front door sill, the front door ring formed by the upper section of the A column, the lower section of the A column, the upper section of the B column, the lower section of the B column, the front door sill and the rear door sill is integrally formed through one-step stamping, the stamping times can be reduced, only one group of dies is needed, the method is more economical, all parts of the front door ring integrally formed through one-step stamping are fixed more stably, and.
Drawings
FIG. 1 is a schematic view of a front door ring of an automobile provided by the present invention;
FIG. 2 is a schematic view of the connection of the roof rail to the left and right A-pillars of the vehicle
In the figure: 1. an automobile A-pillar; 11. an upper section of the column A; 12. the lower section of the column A; 2. a roof rail; 31. a first reinforcing patch panel; 32. a second reinforcing patch panel; 33. a third reinforcing patch panel; 4. a front threshold; 5. An automobile B-pillar; 51. the upper section of the column B; 52. the lower section of the column B; 6. a rear threshold; 7. a first soft zone;
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.
As shown in fig. 1 and 2, the present invention discloses an embodiment of a front door ring for an automobile, including,
comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the automobile A column comprises an A column upper section 11 and an A column lower section 12, wherein the lower end of the A column upper section 11 is fixed with the A column lower section 12, and the A column upper section 11 is provided with a first soft area 7 used for being welded with a roof cross beam 2;
the automobile B column comprises an upper B column section 51 and a lower B column section 52, wherein the upper end of the upper B column section 51 is fixed with the upper A column section 11, and the lower end of the upper B column section 51 is fixed with the upper end of the lower B column section 52;
a front threshold 4 with the front and rear ends respectively fixed with the rear side of the lower part of the A-pillar lower section 12 and the front side of the lower part of the B-pillar lower section 52;
a rear threshold 6 fixed to the rear side of the lower portion of the B-pillar lower section 52;
the part of the upper A-pillar section 11 except the first soft area 7, the lower A-pillar section 12, the upper B-pillar section 51, the front threshold 4 and the rear threshold 6 are all hard areas, and the lower B-pillar section 52 is a second soft area.
The lower A-pillar section 12, the upper A-pillar section 11, the upper B-pillar section 51, the lower B-pillar section 52, the front doorsill 4 and the rear doorsill 6 are connected to form a front door ring.
As a further aspect of the above embodiment, the a-pillar upper section 11, the a-pillar lower section 12, the B-pillar upper section 51, the B-pillar lower section 52, the front rocker 4, and the rear rocker 6 are integrally formed by pressing.
As a further aspect of the above embodiment, the automobile a-pillar 1 further includes a first reinforcing patch panel 31 and a second reinforcing patch panel 32, the first reinforcing patch panel 31 is integrally formed with the a-pillar upper section 11 by being pressed against a partial reinforcing region of the a-pillar upper section 11, the second reinforcing patch panel 32 is integrally formed with the a-pillar lower section 12 by being pressed against a partial reinforcing region of the a-pillar lower section 12, the automobile B-pillar 5 further includes a third reinforcing patch panel 33, and the third reinforcing patch panel 33 is integrally formed with the B-pillar upper section 51 by being pressed against a partial reinforcing region of the B-pillar upper section 51. The shape of the car a-pillar 1 may be the same as the shape of the upper bow half.
The first reinforcing patch panel 31, the second reinforcing patch panel 32 and the third reinforcing patch panel 33 are respectively welded at corresponding positions by spot welding before the a-pillar upper section 11, the a-pillar lower section 12, the B-pillar upper section 51, the B-pillar lower section 52, the front doorsill 4 and the rear doorsill 6 are integrally formed by punching, and then the first reinforcing patch panel 31, the second reinforcing patch panel 32 and the third reinforcing patch panel 33 are subjected to one-time press forming together with the a-pillar upper section 11, the a-pillar lower section 12, the B-pillar upper section 51, the B-pillar lower section 52, the front doorsill 4 and the rear doorsill 6. The automobile body reinforcing structure is convenient to produce, can ensure enough strength in an area needing to be reinforced, is light in weight and is beneficial to reducing the weight of the automobile body.
The locally reinforced areas of the a-column upper section 11, the a-column lower section 12, and the B-column upper section 51 are the middle sections thereof.
In a further aspect of the above embodiment, the B-pillar lower 52 is in an inverted "T" shape, the lower front protruding end of the B-pillar lower 52 is fixed to the front rocker 4, and the lower rear protruding end of the B-pillar lower 52 is fixed to the rear rocker 6.
As a further scheme of the above embodiment, an included angle between the horizontal and vertical sections of the B-pillar lower section 52 is in arc transition, when the B-pillar lower section 52 is impacted, the lower part of the inverted T-shaped B-pillar lower section 52 connected with the front threshold 4 and the rear threshold 6 has a long buffer distance and good buffer and energy absorption effects, and the inverted T-shaped B-pillar lower section 52 slowly deforms along the arc, so that the buffer performance can be improved, the deformation of the lower part of the front door ring can be reduced, and the safety performance is good.
As a further aspect of the above embodiment, the first soft zone 7 is formed by laser temper softening the area of the a-pillar upper section 11 for welding with the roof rail 2. Specifically, the positions, used for being welded with the roof cross beam 2, on the surface of the A column upper section 11 are softened through laser tempering to form the first soft areas 7, and the A column upper section 11 is welded with the two ends of the roof cross beam 2 through the first soft areas 7 on the two sides of the vehicle body, so that the production is convenient, components do not need to be additionally added, middle welding materials do not need to be used, weight reduction is facilitated, and the welding times are reduced.
Specifically, the yield strength of the upper section 11 of the A pillar except the first soft area 7, the lower section 12 of the A pillar, the upper section 51 of the B pillar, the front threshold 4 and the rear threshold 6 can be any value from 950MPa to 1300MPa, the tensile strength can be any value from 1300MPa to 1650MPa, the tensile test A80 is more than or equal to 4.5 percent, and the hardness can be any value from 400 HV to 520 HV; the yield strength of the lower section 52 of the column B is any value of 400-550 MPa, the tensile strength is any value of 600-800 MPa, the tensile test A80 is more than or equal to 10%, and the hardness is any value of 160-235 HV; the yield strength of the first soft zone 7 is any value of 600-750 MPa, the tensile strength is any value of 800-950 MPa, the tensile test A80 is more than or equal to 6%, and the hardness is any value of 160-300 HV.
The part of the A-pillar upper section 11 except the first soft area 7, the A-pillar lower section 12, the B-pillar upper section 51, the front doorsill 4, the rear doorsill 6, the first reinforcing patch panel 31, the second reinforcing patch panel 32 and the third reinforcing patch panel 33 can be made of the same materials, the performances are the same, Usibor1500 materials can be selected, the material areas of the first reinforcing patch panel 31, the second reinforcing patch panel 32 and the third reinforcing patch panel 33 are small, leftover materials can be selected for manufacturing, and the utilization rate of raw materials is improved.
The thickness of the A-pillar lower section 12 is smaller than that of the A-pillar upper section 11, the thickness of the front threshold 4 is smaller than that of the B-pillar upper section 51, and the thicknesses of the B-pillar upper section 51 and the B-pillar lower section 52 are the same. The first reinforcing patch panel 31, the second reinforcing patch panel 32 and the third reinforcing patch panel 33 may have the same thickness, and may have any value of 0.6 to 1.2mm as required. The thickness of the upper section 11 of the A column can be any value of 0.8-1.6 mm; the thickness of the front doorsill 4 can be any value in the range of 1.0-1.8 mm; the thicknesses of the upper B-pillar section 51, the lower B-pillar section 52 and the rear doorsill 6 can be any value of 1.2-2.0 mm.
In one embodiment, the first reinforcing patch panel 31, the second reinforcing patch panel 32 and the third reinforcing patch panel 33 may have a thickness of 0.8mm, and the a-pillar upper section 11 may have a thickness of 1.2 mm; the thickness of the front threshold 4 may be 1.4 mm; the thickness of the B-pillar upper section 51, the B-pillar lower section 52, and the rear threshold 6 may be 1.6 mm.
The lower B-column section 52 may be selected from Ductibor450 or Ductibor500 materials.
The utility model discloses an embodiment of car, including foretell car front door ring. The left side and the right side of the automobile body both adopt the automobile front door ring, and two ends of the roof cross beam 2 are respectively welded with the first soft areas 7 on the left side and the right side of the automobile body. The protruding end of the rear side of the B-pillar lower section 52 of the automobile front door ring is welded with the corresponding rear doorsill 6
The utility model discloses a manufacturing approach's of car front door ring embodiment, including the step:
fixedly connecting plates for manufacturing the B-pillar upper section 51, the B-pillar lower section 52, the front doorsill 4, the rear doorsill 6, the A-pillar lower section 12 and the A-pillar upper section 11 to form a front door ring blank, wherein the plates for manufacturing the B-pillar upper section 51, the front doorsill 4, the rear doorsill 6, the A-pillar lower section 12 and the A-pillar upper section 11 are made of hard zone materials, and the plate for manufacturing the B-pillar lower section 52 is made of a second soft zone material;
stamping a front door ring blank to integrally form a B pillar upper section 51, a B pillar lower section 52, a front door sill 4, a rear door sill 6, an A pillar lower section 12 and an A pillar upper section 11;
after the punching is finished, the area of the A-pillar upper section 11 for welding with the roof cross beam 2 is softened to form a first soft area 7.
The properties of the hard zone material are: the yield strength is 950-1300 MPa, the tensile strength is 1300-1650 MPa, the tensile test A80 is more than or equal to 4.5%, the hardness is 400-520 HV, and Usibor1500 material can be selected;
the properties of the second soft zone material are: the yield strength is 400-550 MPa, the tensile strength is 600-800 MPa, the tensile test A80 is more than or equal to 10%, the hardness is 160-235 HV, and a Ductibor450 or Ductibor500 material can be selected.
As a further scheme of the above embodiment, the plate materials for manufacturing the B-pillar upper section 51, the B-pillar lower section 52, the front doorsill 4, the rear doorsill 6, the a-pillar lower section 12 and the a-pillar upper section 11 are fixedly connected by spot welding to enclose a front door ring blank, and the plate materials are punched after spot welding, and the possibility of cracking is almost zero.
As a further aspect of the above embodiment, after the plate materials for manufacturing the B-pillar upper section 51, the B-pillar lower section 52, the front doorsill 4, the rear doorsill 6, the a-pillar lower section 12, and the a-pillar upper section 11 are fixedly connected and enclosed to form a front door ring blank, before the pressing, the first reinforcement patch panel 31, the second reinforcement patch panel 32, and the third reinforcement patch panel 33 are laser spot welded to correspond to the local reinforcement areas of the a-pillar upper section 11, the a-pillar lower section 12, and the B-pillar upper section 51, respectively, and after the first reinforcement patch panel 31, the second reinforcement patch panel 32, and the third reinforcement patch panel 33 are welded, the whole front door ring with the first reinforcement patch panel 31, the second reinforcement patch panel 32, and the third reinforcement patch panel 33 is formed by the pressing at one time together with the front door ring blank.
Before stamping, a front door blank formed by welding and enclosing plate materials for manufacturing the B-pillar upper section 51, the B-pillar lower section 52, the front door sill 4, the rear door sill 6, the A-pillar lower section 12 and the A-pillar upper section 11, and the first reinforcing patch plate 31, the second reinforcing patch plate 32 and the third reinforcing patch plate 33 welded on the front door blank are heated to 930 ℃ and then placed in a stamping die for one-time stamping forming.
After the punching is finished, softening the area of the surface of the A-pillar upper section 11 for welding with the roof cross beam 2 by a laser tempering softening method to form a first soft area 7, wherein the edge of the first soft area 7 on the A-pillar upper section 11 is a transition area.
According to different thickness requirements of the manufactured B-pillar upper section 51, the B-pillar lower section 52, the front doorsill 4, the rear doorsill 6, the A-pillar lower section 12 and the A-pillar upper section 11, plates with different thicknesses are selected at various positions to form a front door ring blank in a surrounding mode. Through the process of tailor-welding stamping with different material thicknesses, the front door ring can be formed by one set of die through one-step stamping, so that the cost is saved, and the working procedures are saved.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and encompass, for example, a fixed connection, a removable connection, or an integral connection, either directly or indirectly through intervening media. The specific meaning of the above terms in the utility model can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or unit referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. An automobile front door ring, characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the automobile A column comprises an A column upper section (11) and an A column lower section (12), wherein the lower end of the A column upper section (11) is fixed with the A column lower section (12), and the A column upper section (11) is provided with a first soft area (7) used for being welded with a roof cross beam (2);
the automobile B column comprises an upper B column section (51) and a lower B column section (52), wherein the upper end of the upper B column section (51) is fixed with the upper A column section (11), and the lower end of the upper B column section (51) is fixed with the upper end of the lower B column section (52);
the front end and the rear end of the front doorsill (4) are respectively fixed with the rear side of the lower part of the A column lower section (12) and the front side of the lower part of the B column lower section (52);
a rear doorsill (6) fixed to the rear side of the lower portion of the B-pillar lower section (52);
the part of the upper section (11) of the column A except the first soft area (7), the lower section (12) of the column A, the upper section (51) of the column B, the front doorsill (4) and the rear doorsill (6) are all hard areas, and the lower section (52) of the column B is a second soft area.
2. The automotive front door ring of claim 1, wherein: the pillar A upper section (11), the pillar A lower section (12), the pillar B upper section (51), the pillar B lower section (52), the front doorsill (4) and the rear doorsill (6) are integrally formed by punching.
3. The automotive front door ring of claim 1, wherein: the automobile A column (1) further comprises a first reinforcing patch plate (31) and a second reinforcing patch plate (32), the first reinforcing patch plate (31) is arranged on the local reinforcing area of the A column upper section (11) and integrally formed with the A column upper section (11) through stamping, the second reinforcing patch plate (32) is arranged on the local reinforcing area of the A column lower section (12) and integrally formed with the A column lower section (12) through stamping, the automobile B column (5) further comprises a third reinforcing patch plate (33), and the third reinforcing patch plate (33) is arranged on the local reinforcing area of the B column upper section (51) and integrally formed with the B column upper section (51) through stamping.
4. The automotive front door ring of claim 1, wherein: the lower section (52) of the B column is of an inverted T shape, the protruding end part of the lower section (52) of the B column on the front side is fixed with the front doorsill (4), and the protruding end part of the lower section (52) of the B column on the rear side is used for being fixed with the rear doorsill (6).
5. The automotive front door ring according to claim 4, characterized in that: the included angle between the horizontal section and the vertical section of the lower section (52) of the B column is in arc surface transition.
6. The automotive front door ring according to any one of claims 1 to 5, characterized in that: the first soft zone (7) is formed by laser tempering and softening of the area of the A-pillar upper section (11) for welding with the roof cross beam (2).
7. The automotive front door ring according to any one of claims 1 to 5, characterized in that: the yield strength of the upper section (11) of the A column except the first soft area (7), the lower section (12) of the A column, the upper section (51) of the B column, the front doorsill (4) and the rear doorsill (6) is 950-1300 MPa, the tensile strength is 1300-1650 MPa, the tensile test A80 is more than or equal to 4.5%, and the hardness is 400-520 HV; the yield strength of the lower section (52) of the column B is 400-550 MPa, the tensile strength is 600-800 MPa, the tensile test A80 is more than or equal to 10%, and the hardness is 160-235 HV; the first soft area (7) has yield strength of 600-750 MPa, tensile strength of 800-950 MPa, tensile test A80 of more than or equal to 6% and hardness of 160-300 HV.
8. The automotive front door ring according to any one of claims 1 to 5, characterized in that: the thickness of the A column lower section (12) is smaller than that of the A column upper section (11), the thickness of the front doorsill (4) is smaller than that of the B column upper section (51), and the thicknesses of the B column upper section (51) and the B column lower section (52) are the same.
9. An automobile, characterized in that: comprising the automotive front door ring according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022437475.0U CN213442782U (en) | 2020-10-28 | 2020-10-28 | Automobile front door ring and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022437475.0U CN213442782U (en) | 2020-10-28 | 2020-10-28 | Automobile front door ring and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213442782U true CN213442782U (en) | 2021-06-15 |
Family
ID=76295572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022437475.0U Active CN213442782U (en) | 2020-10-28 | 2020-10-28 | Automobile front door ring and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213442782U (en) |
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2020
- 2020-10-28 CN CN202022437475.0U patent/CN213442782U/en active Active
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