CN111439304A - Connecting structure of front longitudinal beam and front longitudinal beam sealing plate - Google Patents
Connecting structure of front longitudinal beam and front longitudinal beam sealing plate Download PDFInfo
- Publication number
- CN111439304A CN111439304A CN202010352929.6A CN202010352929A CN111439304A CN 111439304 A CN111439304 A CN 111439304A CN 202010352929 A CN202010352929 A CN 202010352929A CN 111439304 A CN111439304 A CN 111439304A
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- front longitudinal
- longitudinal beam
- plate
- sealing plate
- side wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The invention discloses a connecting structure of a front longitudinal beam and a front longitudinal beam sealing plate, which comprises a water tank beam supporting plate and a front longitudinal beam sealing plate, wherein the water tank beam supporting plate is connected to the side wall of a front longitudinal beam inner plate through a bolt; the structure can realize the guidance and control of the axial crushing deformation area of the front end of the front longitudinal beam and improve the stability of the axial crushing deformation of the front end of the front longitudinal beam; the structure has simple manufacturing process, safety and reliability.
Description
Technical Field
The invention relates to the technical field of automobile part processing, in particular to a connecting structure of a front longitudinal beam and a front longitudinal beam sealing plate.
Background
At present, the automobile design tends to be short front overhang and long wheelbase, the deformation energy absorption space of an engine cabin is more and more compact, and the limited energy absorption space needs to absorb more energy. Therefore, higher requirements are put on deformation energy absorption of the thin-wall structural member of the front side member of the automobile body. The thin-wall structural member has several deformation forms of axial crushing deformation, bending deformation and mixed mode of axial crushing deformation and bending deformation. Among them, the axial crushing deformation is the most effective energy absorption mode and is also a deformation form with poor stability.
Because of the cross-sectional dimension of front longitudinal front end and the influence of water tank crossbeam backup pad, the front longitudinal of current cross-section appears crushing deformation uniformity's relatively poor problem easily when axial crushing warp, and axial crushing deformation mode evolves into axial crushing and bending deformation's mixed mode easily, warp to have unpredictability, is unfavorable for the stability that control front longitudinal warp, and then the direct influence automobile body warp the energy-absorbing condition.
Therefore, the connecting structure of the front longitudinal beam and the front longitudinal beam sealing plate is provided for solving the problems in the prior art, so that the control of the axial crushing deformation area of the front end of the front longitudinal beam is realized, the stability of the axial crushing deformation of the front end of the front longitudinal beam is improved, and the front end of the front longitudinal beam generates stable crushing energy absorption.
Disclosure of Invention
The invention aims to provide a connecting structure of a front longitudinal beam and a front longitudinal beam sealing plate, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a connection structure of front longitudinal and front longitudinal shrouding, includes go-between and front longitudinal shrouding, the go-between passes through seam welding in the front longitudinal shrouding inside wall, the welding of go-between lateral wall has the front longitudinal inner panel through spot welding, front longitudinal shrouding lateral wall passes through spot welding in the front longitudinal inner panel tip, the welding of front longitudinal inner panel lateral wall has the water tank crossbeam backup pad, the terminal surface is connected with the front longitudinal planking through spot welding before the go-between, assorted groove structure has been seted up to front longitudinal inner panel and front longitudinal planking inboard, just front longitudinal inner panel and front longitudinal planking joint are in the same place, the go-between is pegged graft in front longitudinal inner panel and the inboard recess of front longitudinal planking, the front longitudinal inner panel is.
Preferably, the connecting ring is of a rectangular frame structure, and the side wall of the connecting ring is provided with a chamfered edge.
Preferably, the inner side walls of the front longitudinal beam inner plate and the front longitudinal beam outer plate are tightly attached to the outer side of the connecting ring, and the inner walls of the front longitudinal beam inner plate and the front longitudinal beam outer plate are welded together with the outer side wall of the connecting ring.
Preferably, the side wall of the front longitudinal beam sealing plate is connected with the front longitudinal beam inner plate and the front longitudinal beam outer plate through spot welding, and a boss edge is formed in the side wall of the front longitudinal beam sealing plate.
Preferably, bolt hole structures are formed in the side walls of the front longitudinal beam sealing plate, the front longitudinal beam inner plate and the front longitudinal beam outer plate.
Preferably, the middle of the outer plate of the front longitudinal beam is of an inwards concave arc-shaped surface structure, and the middle of the inner plate of the front longitudinal beam is provided with an arc-shaped surface matched with the outer plate of the front longitudinal beam.
Compared with the prior art, the invention has the beneficial effects that:
the structure can increase the connection strength of the front longitudinal beam and the front longitudinal beam sealing plate area; the structure can realize the guidance and control of the axial crushing deformation area of the front end of the front longitudinal beam and improve the stability of the axial crushing deformation of the front end of the front longitudinal beam; the structure is simple in manufacturing process, safe and reliable, the length of the connecting structural part ensures that at least two rows of welding spots are distributed when the connecting structure is welded with the front longitudinal beam, and further the connecting strength of the front longitudinal beam and the front longitudinal beam sealing plate is ensured; the area of the front longitudinal beam between the connecting structure and the longitudinal beam reinforcing plate has obvious rigidity difference compared with the peripheral area, and the rear end of the connecting structure is the third corrugation period. This connection structure plays restraint guide structure effect, has not only eliminated the axial crushing unstability problem that longeron cross-sectional dimension and water tank crossbeam backup pad caused through the restraint effect, still guides the axial crushing deformation for the crumple zone produces stable crushing deformation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an attachment ring structure according to the present invention;
FIG. 3 is a schematic view of an assembly structure according to the present invention.
In the figure: the water tank beam support plate 1, the front longitudinal beam sealing plate 2, the front longitudinal beam inner plate 3, the front longitudinal beam outer plate 4 and the connecting ring 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a connecting structure of a front longitudinal beam and a front longitudinal beam sealing plate comprises a connecting ring 5 and a front longitudinal beam sealing plate 2, wherein the connecting ring 5 is welded on the inner side wall of the front longitudinal beam sealing plate 2 through seam welding, the side wall of the connecting ring 5 is welded with a front longitudinal beam inner plate 3 through spot welding, the side wall of the front longitudinal beam sealing plate 2 is welded on the end part of the front longitudinal beam inner plate 3 through spot welding, the side wall of the front longitudinal beam inner plate 3 is welded with a water tank beam supporting plate 1, the front end surface of the connecting ring 5 is connected with a front longitudinal beam outer plate 4 through spot welding, the inner sides of the front longitudinal beam inner plate 3 and the front longitudinal beam outer plate 4 are provided with matched groove structures, the front longitudinal beam inner plate 3 and the front longitudinal beam outer plate 4 are clamped together, the connecting ring 5 is inserted in grooves on the front longitudinal beam inner plate 3 and the, 4 inside walls of front longitudinal inner panel 3 and front longitudinal planking and the 5 outside of go-between closely laminate, and the welding of 4 inner walls of front longitudinal inner panel 3 and front longitudinal planking and 5 outside walls of go-between is in the same place, 2 lateral walls of front longitudinal shrouding are connected through spot welding with front longitudinal inner panel 3 and front longitudinal planking 4, and the boss limit has been seted up to 2 lateral walls of front longitudinal shrouding, bolt hole structure has all been seted up to front longitudinal shrouding 2, 4 lateral walls of front longitudinal inner panel 3 and front longitudinal planking, be indent arc face structure in the middle of the front longitudinal planking 4, set up in the middle of the front longitudinal inner panel 3 with.
The structure principle is that a connecting ring 5 between a front longitudinal beam inner plate 3 and a front longitudinal beam outer plate 4 is an annular structural member, four planes of the connecting ring 5 are attached to the inner surface of the front end of a front longitudinal beam, round angle transition is adopted between the planes, the length L of the connecting ring 5 is obtained through theoretical calculation, the connecting structure is firstly connected with a front longitudinal beam sealing plate through seam welding and then connected with the front longitudinal beam inner plate through at least two rows of welding spots in a spot welding mode, the three planes are guaranteed to be reliably connected with the front longitudinal beam inner plate, and finally connected with the front longitudinal beam outer plate through at least two rows of welding spots to form a last plane.
From the SFE theory, one can obtain: fold cycle length of axial crushing deformationλThe empirical formula of (a) is,
wherein, t: wall thickness, c-1/2 (b + d), b, d: the length and width of the cross section.
The length L of the connecting knot component adopts two fold cycle lengths, namely L-2λ＝4H。
The connecting structure of the design has the following two advantages:
1. the length of the connecting structural member ensures that at least two rows of welding spots are distributed when the connecting structure is welded with the front longitudinal beam, so that the connecting strength of the front longitudinal beam and the front longitudinal beam sealing plate is ensured;
2. the area of the front longitudinal beam between the connecting structure and the longitudinal beam reinforcing plate has obvious rigidity difference compared with the peripheral area, and the rear end of the connecting structure is the third corrugation period. This connection structure plays restraint guide structure effect, has not only eliminated the axial crushing unstability problem that longeron cross-sectional dimension and water tank crossbeam backup pad caused through the restraint effect, still guides the axial crushing deformation for the crumple zone produces stable crushing deformation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a connection structure of front longitudinal and front longitudinal shrouding, includes go-between (5) and front longitudinal shrouding (2), its characterized in that: the connecting ring (5) is welded on the inner side wall of the front longitudinal beam sealing plate (2) through seam welding, the side wall of the connecting ring (5) is welded with the front longitudinal beam inner plate (3) through spot welding, the side wall of the front longitudinal beam sealing plate (2) is welded at the end part of the front longitudinal beam inner plate (3) through spot welding, the side wall of the front longitudinal beam inner plate (3) is welded with a water tank cross beam support plate (1), the front end surface of the connecting ring (5) is connected with the front longitudinal beam outer plate (4) through spot welding, the inner sides of the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4) are provided with matched groove structures, the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4) are clamped together, the connecting ring (5) is inserted in the grooves at the inner sides of the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4), the front longitudinal beam inner plate (3) is connected with the front longitudinal beam outer plate (4) through welding edge spot welding.
2. The structure of claim 1, wherein the front side frame and the front side frame sealing plate are connected by a connecting structure comprising: the connecting ring (5) is of a rectangular frame structure, and a chamfered edge is formed in the side wall of the connecting ring (5).
3. The structure of claim 1, wherein the front side frame and the front side frame sealing plate are connected by a connecting structure comprising: the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4) are tightly attached to the outer side of the connecting ring (5), and the inner walls of the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4) are welded with the outer side wall of the connecting ring (5).
4. The structure of claim 1, wherein the front side frame and the front side frame sealing plate are connected by a connecting structure comprising: the side wall of the front longitudinal beam sealing plate (2) is connected with the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4) through spot welding, and the side wall of the front longitudinal beam sealing plate (2) is provided with a boss edge.
5. The structure of claim 1, wherein the front side frame and the front side frame sealing plate are connected by a connecting structure comprising: bolt hole structures are formed in the side walls of the front longitudinal beam sealing plate (2), the front longitudinal beam inner plate (3) and the front longitudinal beam outer plate (4).
6. The structure of claim 1, wherein the front side frame and the front side frame sealing plate are connected by a connecting structure comprising: the middle of the front longitudinal beam outer plate (4) is of an inwards concave arc-shaped surface structure, and an arc-shaped surface matched with the front longitudinal beam outer plate (4) is arranged in the middle of the front longitudinal beam inner plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352929.6A CN111439304A (en) | 2020-04-29 | 2020-04-29 | Connecting structure of front longitudinal beam and front longitudinal beam sealing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352929.6A CN111439304A (en) | 2020-04-29 | 2020-04-29 | Connecting structure of front longitudinal beam and front longitudinal beam sealing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111439304A true CN111439304A (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010352929.6A Pending CN111439304A (en) | 2020-04-29 | 2020-04-29 | Connecting structure of front longitudinal beam and front longitudinal beam sealing plate |
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| Country | Link |
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| CN (1) | CN111439304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115384624A (en) * | 2022-09-23 | 2022-11-25 | 重庆长安汽车股份有限公司 | Engine compartment longitudinal beam front end connecting structure and vehicle |
-
2020
- 2020-04-29 CN CN202010352929.6A patent/CN111439304A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115384624A (en) * | 2022-09-23 | 2022-11-25 | 重庆长安汽车股份有限公司 | Engine compartment longitudinal beam front end connecting structure and vehicle |
| CN115384624B (en) * | 2022-09-23 | 2023-11-21 | 重庆长安汽车股份有限公司 | Engine compartment longitudinal beam front end connecting structure and vehicle |
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