Width-adjustable automobile seat framework structure

Abstract

The width-adjustable automobile seat framework structure comprises a backrest framework and a cushion framework, and the backrest framework comprises backrest side plates which are in bilateral symmetry, a backrest upper cross beam connected with the upper portions of the backrest side plates and a linkage shaft connected with the lower portions of the backrest side plates. The seat cushion framework comprises seat cushion side plates in bilateral symmetry and a seat cushion rear transverse pipe connected with the rear portions of the seat cushion side plates, the left outer contour and the right outer contour of the backrest upper cross beam are integrally in an arc shape folded inwards from bottom to top, and the inner side faces of the tops of the backrest side plates are matched with the left outer contour and the right outer contour of the backrest upper cross beam. Laser welding surfaces welded with the corresponding mounting surfaces of the backrest upper cross beam are arranged on the front side wall and the rear side wall of the top of the backrest side plate, the laser welding surfaces are larger than the corresponding mounting surfaces of the backrest upper cross beam, and the backrest side plate has the advantages of being adaptive to various seat models, saving cost, being flexible to use, being linked in design structure, being novel in conception, being ingenious in design and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat frames, and in particular relates to an automobile seat frame structure with adjustable width. Background Art

[0002] At present, large trucks or small cars all use their own non-interchangeable car seat frame structures, which makes it impossible to unify the standard mass production. For example, the width span of the cockpit of wide-body light passenger cars, MPVs and SUVs is relatively large (425mm, 430mm, and 410mm respectively). Different interior environments require that the width of the seat frame vary greatly, with the maximum change reaching 20mm. Therefore, the existing seat frames are independently designed according to the needs of each model; and the mold cost of the main driver's seat itself is very high. The seat frames cannot be simply modified to be interchangeable, and the cost is high. Utility Model Content

[0003] The utility model aims to provide a car seat frame structure with adjustable width, which is simple to modify and reduces costs, and solves the problem that the existing seat frames are independently designed according to the requirements of each car model, resulting in high cost.

[0004] To this end, the technical solution adopted by the utility model is: an adjustable width automobile seat frame structure, including a backrest frame and a cushion frame, the backrest frame including left-right symmetrical backrest side panels, a backrest upper crossbeam connected to the upper part of the backrest side panels and a linkage shaft connected to the lower part of the backrest side panels, the cushion frame including left-right symmetrical cushion side panels and a cushion rear cross tube connected to the rear part of the cushion side panels, the left and right outer contours of the backrest upper crossbeam are generally in an arc shape that converges inward from bottom to top, the inner side surface of the top of the backrest side panel matches the left and right outer contours of the backrest upper crossbeam, the left and right ends of the backrest upper crossbeam are provided with mounting surfaces, the front and rear side walls of the top of the backrest side panel are provided with laser welding surfaces welded to the corresponding mounting surfaces of the backrest upper crossbeam, the laser welding surface is larger than the corresponding mounting surface of the backrest upper crossbeam, when the backrest side panels and the cushion side panels synchronously move inward to narrow or move outward away from the widened seat frame, the backrest upper crossbeam moves down or up, and the mounting surface does not exceed the range of the laser welding surface.

[0005] As a preferred embodiment of the above scheme, the front side wall of the lower middle part of the backrest side panel is retracted inward to form a curled edge and the curled edge gradually narrows from bottom to top, thereby improving the whipping performance in the seat whipping dummy test. At the same time, the narrow edge design can increase the soft surface of the seat back and effectively improve the riding comfort.

[0006] Further preferably, a wiring harness through hole is provided in the center of the upper cross beam of the backrest, and an overlapping anti-cut structure is provided at the edge of the wiring harness through hole, which effectively avoids cuts to personnel and wire harness cuts, and the design is reasonable.

[0007] Further preferably, both ends of the linkage shaft are welded to the bottom ends of the backrest side panels, and the welding is firm.

[0008] Further preferably, an arc side plate is provided at an upper edge of the rear portion of the seat cushion side plate corresponding to the obliquely upper side of the seat cushion rear cross tube mounting hole, so that it contacts the arc surface of the outer end of the power assist spring installed on the seat cushion rear cross tube mounting hole, with a smooth surface and small contact stress, thereby effectively avoiding abnormal noise caused by point-line contact.

[0009] Beneficial effects of the utility model:

[0010] (1) Compared with the existing seat frames which are independently designed according to the requirements of each vehicle model, this solution uses the method of simultaneously moving the backrest side panels and the seat cushion side panels inward to narrow them or outward to widen the seat frame to adjust the seat width. Other parts can be directly used. Only the length of the linkage shaft and the rear cross tube of the seat cushion needs to be adaptively adjusted. Different length specifications are designed for selection. The seat frames that meet the seat width requirements of wide-body light buses, MPVs and SUVs can be mass-produced in a standardized manner. The seat frames are suitable for a variety of seat shapes, save costs, and are flexible to use.

[0011] (2) The left and right outer contours of the upper back beam are generally in the shape of an arc that converges inward from bottom to top. The inner side surface of the top of the backrest side panel matches the left and right outer contours of the upper back beam. The laser welding surface is larger than the installation surface of the upper back beam. Since the upper outer edge of the backrest side panel converges inward, the upper part of the left and right backrest side panels forms an installation space structure that is narrow at the top and large at the bottom. When the backrest side panels are narrowed inward or widened outward along the "Y" axis, the upper back beam can adjust the welding surface height downward or upward to avoid conflicts between the left and right edges of the upper back beam and the backrest side panels. The design structure is linked together, the conception is novel, and the design is ingenious.

[0012] To sum up, it has the advantages of adapting to various seat shapes, saving costs, flexible application, interlocking design structure, novel conception and ingenious design. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view of the utility model.

[0014] Figure 2 It is a schematic diagram of the partial structure of the upper crossbeam and the side panels of the backrest.

[0015] Figure 3 It is a schematic diagram of the partial structure of the seat cushion side panel and the rear cross tube of the seat cushion. DETAILED DESCRIPTION

[0016] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0017] Combination Figure 1 — Figure 3 As shown, a width-adjustable automobile seat frame structure is composed of a backrest frame and a seat cushion frame.

[0018] The backrest frame is composed of a left-right symmetrical backrest side plate 1 , a backrest upper crossbeam 2 connected to the upper part of the backrest side plate 1 , and a linkage shaft 3 connected to the lower part of the backrest side plate 1 .

[0019] The seat cushion frame is composed of a left-right symmetrical seat cushion side plate 4 and a seat cushion rear transverse pipe 5 connected to the rear of the seat cushion side plate 4 .

[0020] The left and right outer contours of the upper cross beam 2 of the backrest are in the shape of an arc that converges inward from bottom to top.

[0021] The top inner side surface of the backrest side plate 1 matches the left and right outer contours of the backrest upper cross beam 2.

[0022] The left and right ends of the upper cross beam 2 of the backrest are provided with mounting surfaces.

[0023] The front and rear side walls of the top of the backrest side plate 1 are both provided with laser welding surfaces 11 welded to the corresponding mounting surfaces of the backrest upper cross beam 2 .

[0024] The laser welding surface 11 is larger than the corresponding mounting surface of the upper cross beam 2 of the backrest.

[0025] When the backrest side panels 1 and the seat cushion side panels 4 are simultaneously moved inwardly to narrow or outwardly away from the widened seat frame, the backrest upper cross beam 2 moves downward or upward, and the installation surface does not exceed the range of the laser welding surface 11.

[0026] The front side wall of the lower middle part of the backrest side plate 1 is retracted to form a curling edge, and the curling edge gradually narrows from bottom to top.

[0027] A wiring harness through hole 21 is centrally provided on the backrest upper cross beam 2, and an overlapped edge anti-cutting structure is provided at the edge of the wiring harness through hole 21.

[0028] The two ends of the linkage shaft 3 are welded to the bottom end of the backrest side plate 1.

[0029] An arc side plate 41 is provided at the upper rear edge of the seat cushion side plate 4 corresponding to the upper oblique position of the seat cushion rear transverse tube 5 mounting hole, so as to contact the arc surface of the outer end of the booster spring mounted on the seat cushion rear transverse tube 5 mounting hole.

[0030] When it is necessary to adapt to the narrow frame of a small car seat, the backrest side panel 1 and the seat cushion side panel 4 are simultaneously moved inward and narrowed, and other parts can be directly used, and then the length of the linkage shaft 3 and the rear cross tube 5 of the seat cushion are adaptively adjusted.

[0031] When it is necessary to adapt to the wide seat frame of a large car, the backrest side panel 1 and the seat cushion side panel 4 are simultaneously moved outward along the "Y" axis away from the widened seat frame, and other parts can be directly used, and then the length of the linkage shaft 3 and the rear cross tube 5 of the seat cushion can be adaptively adjusted.

Claims

1. A width-adjustable automobile seat frame structure, characterized in that: The invention comprises a backrest frame and a seat cushion frame, wherein the backrest frame comprises a left-right symmetrical backrest side panel (1), a backrest upper cross beam (2) connected to the upper part of the backrest side panel (1), and a linkage shaft (3) connected to the lower part of the backrest side panel (1); the seat cushion frame comprises a left-right symmetrical seat cushion side panel (4) and a seat cushion rear cross pipe (5) connected to the rear part of the seat cushion side panel (4); the left and right outer contours of the backrest upper cross beam (2) are in the shape of an arc that converges inward from bottom to top; the inner side surface of the top of the backrest side panel (1) and the backrest upper cross beam (2) are connected to each other. The left and right outer contours match, the left and right ends of the upper cross beam (2) of the backrest are provided with mounting surfaces, the front and rear side walls of the top of the backrest side panels (1) are provided with laser welding surfaces (11) welded to the mounting surfaces corresponding to the upper cross beam (2), the laser welding surfaces (11) are larger than the mounting surfaces corresponding to the upper cross beam (2), when the backrest side panels (1) and the cushion side panels (4) are simultaneously moved inwardly to narrow or outwardly away from the widened seat frame, the upper cross beam (2) of the backrest moves downward or upward, and the mounting surface does not exceed the range of the laser welding surface (11).

2. The adjustable width automobile seat frame structure according to claim 1, characterized in that: The front side wall of the lower middle part of the backrest side plate (1) is retracted inward to form a curling edge, and the curling edge gradually narrows from bottom to top.

3. The adjustable width automobile seat frame structure according to claim 1, characterized in that: A wire harness through hole (21) is centrally provided on the backrest upper cross beam (2), and an edge overlap anti-cutting structure is provided on the edge of the wire harness through hole (21).

4. The adjustable width automobile seat frame structure according to claim 1, characterized in that: The two ends of the linkage shaft (3) are welded to the bottom end of the backrest side plate (1).

5. The adjustable width automobile seat frame structure according to claim 1, characterized in that: An arc side plate (41) is provided on the upper edge of the rear portion of the cushion side plate (4) at an angle above the mounting hole of the rear transverse tube (5) of the cushion, so as to contact the arc surface of the outer end of the booster spring mounted on the mounting hole of the rear transverse tube (5) of the cushion.

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