Framework structure of automobile seat backrest

Abstract

An automobile seat backrest framework structure belongs to the technical field of automobiles and comprises a left side plate, a right side plate, an upper cross beam, a headrest guide sleeve and a lower cross beam, the left side plate, the right side plate, the upper cross beam and the lower cross beam are of framework structures, and the two ends of the upper cross beam are connected with the tops of the left side plate and the right side plate in a clamped mode through first dovetail groove structures. The upper cross beam is welded with the contacted front and back surfaces of the left side plate and the right side plate, two ends of the lower cross beam are connected with the left side plate and the right side plate through bolts, the headrest guide sleeve is positioned at the front part of the upper cross beam, and the headrest guide sleeve is connected with the upper cross beam through a second dovetail groove structure. The left side plate, the right side plate, the upper cross beam, the headrest guide sleeve and the lower cross beam are formed by aluminum alloy extrusion or magnesium alloy extrusion. The production efficiency is improved, the production cost is reduced, energy conservation and emission reduction are facilitated, and the environment is protected.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a frame structure of a car seat backrest. Background Art

[0002] Traditional seat back frames are usually welded from several stamped parts, which have the following disadvantages: 1. Each stamping part on the frame needs to be manufactured by a mold. A seat frame will involve more than a dozen or even dozens of stamping dies, which greatly reduces production efficiency. In addition, the stamping die has a service life. After a certain number of uses, a new mold needs to be copied for part manufacturing, which will greatly increase the cost of parts.

[0003] 2. After these stamping parts are manufactured, a set of welding clamps needs to be designed to weld and assemble them. The production efficiency is low, the welding clamps have high precision requirements, the manufacturing cycle is long and the price is expensive, which will further increase the cost of the product.

[0004] 3. The seat frame made of carbon steel is also relatively heavy, which is not conducive to energy conservation and emission reduction. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problems existing in the traditional seat frame and to provide a car seat back frame structure. The present invention improves production efficiency, reduces production costs, is beneficial to energy conservation and emission reduction, and protects the environment.

[0006] The present invention adopts the following technical solutions: A car seat back frame structure includes a left side plate, a right side plate, an upper crossbeam, a headrest guide sleeve and a lower crossbeam. The left side plate, the right side plate, the upper crossbeam and the lower crossbeam are frame structures. The two ends of the upper crossbeam are clamped with the tops of the left side plate and the right side plate through a first dovetail groove structure. The upper crossbeam is welded between the front and rear faces where the left side plate and the right side plate contact. The two ends of the lower crossbeam are connected to the left side plate and the right side plate by bolts. The headrest guide sleeve is located at the front of the upper crossbeam. The headrest guide sleeve is connected to the upper crossbeam through a second dovetail groove structure.

[0007] The left side plate and the right side plate have the same structure. The right side plate is composed of a front frame plate, a rear frame plate and a middle W-shaped plate. The middle W-shaped plate is located between the front frame plate and the rear frame plate.

[0008] The left side plate, the right side plate, the upper crossbeam, the headrest guide sleeve and the lower crossbeam are formed by extrusion of aluminum alloy or magnesium alloy.

[0009] The material of the bolt is steel.

[0010] The lower ends of the left side plate and the right side plate are both provided with mounting holes on their outer sides, and the mounting holes are used for mounting the angle adjuster.

[0011] Beneficial effects of the present invention: 1. All parts are made of extruded profiles. The formed extruded profiles are cut and then simply processed to form the required parts, which improves production efficiency.

[0012] 2. The processed profile parts only need simple welding or bolting to form the seat frame, which further improves production efficiency.

[0013] 3. Since the price of extrusion profile molds is relatively low, the cost allocated to each part is relatively low, and the entire seat frame structure does not require complex welding clamps and other tooling to assist in assembly, further reducing the cost of part manufacturing.

[0014] 4. The parts are made of aluminum alloy or magnesium alloy, which has a significant weight reduction effect and can greatly reduce the weight of the seat frame, which is beneficial to energy conservation and emission reduction of the entire vehicle and protects the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 yes Figure 2 A-A sectional view; Figure 4 yes Figure 2 The B-B section view; Figure 5 yes Figure 2 The C-C section view; Figure 6 yes Figure 1 The enlarged schematic diagram of D in FIG. Figure 7 It is an exploded view of the present invention. DETAILED DESCRIPTION

[0016] like Figures 1 to 7 As shown, a car seat back frame structure includes a left side panel 1, a right side panel 2, an upper crossbeam 3, a headrest guide sleeve 4 and a lower crossbeam 5. The left side panel 1, the right side panel 2, the upper crossbeam 3 and the lower crossbeam 5 are a frame structure. The two ends of the upper crossbeam 3 are clamped with the top of the left side panel 1 and the right side panel 2 through a first dovetail groove structure 31. The upper crossbeam 3 is welded between the front and rear surfaces of the left side panel 1 and the right side panel 2. The two ends of the lower crossbeam 5 are connected to the left side panel 1 and the right side panel 2 by bolts 51. The headrest guide sleeve 4 is located in front of the upper crossbeam 3. The headrest guide sleeve 4 is connected to the upper crossbeam 3 through a second dovetail groove structure 41.

[0017] The left side plate 1 and the right side plate 2 have the same structure. The right side plate 2 is composed of a front frame plate 21 , a rear frame plate 22 and a middle W-shaped plate 23 . The middle W-shaped plate 23 is located between the front frame plate 21 and the rear frame plate 22 .

[0018] The left side plate 1, the right side plate 2, the upper cross beam 3, the headrest guide sleeve 4 and the lower cross beam 5 are formed by extrusion of aluminum alloy or magnesium alloy.

[0019] The bolt 51 is made of steel.

[0020] The lower outer sides of the left side plate 1 and the right side plate 2 are both provided with mounting holes 6, and the mounting holes 6 are used for mounting the angle adjuster.

Claims

1. A car seat back frame structure, comprising a left side plate (1), a right side plate (2), an upper crossbeam (3), a headrest guide sleeve (4) and a lower crossbeam (5), characterized in that: The left side plate (1), the right side plate (2), the upper crossbeam (3) and the lower crossbeam (5) are a skeleton structure. The two ends of the upper crossbeam (3) are clamped with the tops of the left side plate (1) and the right side plate (2) through a first dovetail groove structure (31). The upper crossbeam (3) is welded to the front and rear surfaces of the left side plate (1) and the right side plate (2). The two ends of the lower crossbeam (5) are connected to the left side plate (1) and the right side plate (2) by bolts (51). The headrest guide sleeve (4) is located at the front of the upper crossbeam (3). The headrest guide sleeve (4) is connected to the upper crossbeam (3) through a second dovetail groove structure (41). The left side plate (1), the right side plate (2), the upper crossbeam (3), the headrest guide sleeve (4) and the lower crossbeam (5) are formed by extrusion of an aluminum alloy or a magnesium alloy.

2. The automobile seat back frame structure according to claim 1, characterized in that: The left side plate (1) and the right side plate (2) have the same structure. The right side plate (2) is composed of a front frame plate (21), a rear frame plate (22) and a middle W-shaped plate (23). The middle W-shaped plate (23) is located between the front frame plate (21) and the rear frame plate (22).

3. The automobile seat back frame structure according to claim 1, characterized in that: The bolt (51) is made of steel.

4. The automobile seat back frame structure according to claim 1, characterized in that: The lower ends of the left side plate (1) and the right side plate (2) are both provided with mounting holes (6) on their outer sides.

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