Inclination angle adjusting seat five-connecting-rod structure small in occupied space

Abstract

The invention relates to an inclination angle adjusting seat five-connecting-rod structure small in occupied space, and belongs to the technical field of automobile seats. The seat five-connecting-rod structure comprises a sliding rail reinforcing plate, a five-connecting-rod rotating shaft support, a five-connecting-rod, a rear transverse pipe, a five-connecting-rod rotating shaft, a leg support mounting connector, a rear transverse pipe support, a seat cushion safety belt support, a backrest safety belt lock support and a headrest mounting bent pipe. A rear transverse pipe and a five-connecting-rod rotating shaft serve as supporting points, a frame structure composed of a rear transverse pipe support, a five-connecting-rod rotating shaft support and a sliding rail reinforcing plate serves as a main body, a headrest installation bent pipe provides an installation point for a headrest, and a backrest safety belt lock support and a cushion safety belt support provide installation positions for safety of the whole chair. The space occupied by the seat is effectively reduced, and the requirement of the electric vehicle for internal space optimization is met; through the improved safety belt fixing point design and the reinforced structure, the safety of the seat is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile seats, and in particular to a five-link structure of an inclination-adjustable seat that occupies a small space. Background Art

[0002] The existing car seat design concept is constantly developing in the direction of low cost, light weight, high strength and high comfort. However, the traditional front seat frame has the following shortcomings: 1. The overall structure occupies a large vertical space, which does not meet the requirements of low space occupation in electric vehicles; 2. The platform is backward and the safety is low, which is difficult to meet the increasing demand; 3. The structure is complex and the production cost is high. Summary of the invention

[0003] In view of this, the present application provides a five-link structure for a tilt-adjustable seat that occupies a small space and can effectively overcome the defects of the above-mentioned prior art.

[0004] The present application provides a five-link structure for an inclination-adjustable seat with a small footprint, comprising a slide rail reinforcement plate, a five-link pivot bracket, a five-link, a rear cross tube, a five-link pivot shaft, a leg rest mounting interface, a rear cross tube bracket, a seat cushion safety belt bracket, a backrest safety belt lock bracket, and a headrest mounting elbow;

[0005] The five-link pivot bracket is slidably set on the slide rail reinforcement plate, the five-link is set on the five-link pivot bracket, the rear cross tube and the five-link rotating shaft are connected to two five-link pivot brackets, the rear cross tube and the five-link rotating shaft are fulcrums, the leg rest mounting interface is set on the five-link, the rear cross tube bracket is connected to the rear cross tube and the five-link, the seat cushion safety belt bracket is set on the five-link pivot bracket, the backrest safety belt lock bracket is set on the backrest connected to the five-link pivot bracket, and the headrest mounting bent pipe is set on the top of the backrest connected to the five-link pivot bracket.

[0006] This application adopts a low-BLOCK design: effectively reducing the space occupied by the seat, adapting to the needs of electric vehicles for optimizing the internal space. Enhanced safety performance: The safety of the seat is improved through the improved seat belt fixing point design and strengthened structure. Efficient assembly and maintenance: The integrated design of the backrest head and the hanging headrest installation method significantly improve assembly efficiency and reduce maintenance costs.

[0007] Preferably, two triangular prisms are symmetrically arranged on the five-link rotation axis, and the connection between the triangular prisms and the five-link rotation axis is an arc transition.

[0008] Preferably, the slide rail reinforcement plate includes a first slide rail and a second slide rail, the second slide rail is arranged on the first slide rail, and the five-link shaft bracket is slidably matched with the first slide rail and the second slide rail.

[0009] Preferably, the first slide rail comprises an L-shaped plate, and an upper portion of a vertical plate of the L-shaped plate is bent inward to form a first bent plate parallel to the vertical plate.

[0010] Preferably, the second slide rail comprises a U-shaped plate, and upper portions on both sides of the U-shaped plate are respectively bent inward to form second bent plates parallel to the two sides thereof.

[0011] Preferably, the headrest mounting bend pipe comprises a C-shaped bend pipe, with parallel connecting pipes formed at both ends of the bend pipe, the connecting pipes are used to connect with the backrest, and two flat mounting parts are symmetrically formed on the top of the bend pipe, and two square tubes are arranged on the mounting parts, and the square tubes are used for installing the headrest.

[0012] Compared with the prior art, this application has the following beneficial effects:

[0013] 1. The front seat frame design of this application: adopts a low BLOCK design, so that the upper plane of the seat cushion is closer to the installation surface, thereby achieving more compact space utilization.

[0014] 2. The design of the seat belt fixing point of this application: the seat belt fixing point is set on the backrest frame, and a reinforced structure is adopted to cope with the huge force during impact, which meets higher safety standards.

[0015] 3. The unique five-link mechanism of the present application: In view of the high chassis characteristics of electric vehicles, a method is specially designed to compress the height space occupied by the five-link mechanism to the minimum, ensuring that the required seat tilt function can be achieved even in low BLOCK conditions.

[0016] 4. The backrest head design of this application: by directly bending and welding on the upper beam frame, the structure is simple and one-piece, achieving low cost and high efficiency. In addition, the backrest assembly adopts a hanging design, which simplifies the subsequent installation process of the headrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the description of the present application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of a five-link structure of a tilt-angle adjustment seat with a small footprint of the present application;

[0019] Figure 2 is a side view of the five-link structure of the tilt-angle adjustment seat with small footprint of the present application;

[0020] Figure 3It is a front view of the five-link structure of the tilt-angle adjustment seat with small space occupied by the present application;

[0021] Figure 4 It is a bottom view of the five-link structure of the tilt-angle adjustment seat with small space occupied by the present application.

[0022] Description of reference numerals:

[0023] 1. Headrest installation elbow; 2. Backrest seat belt lock bracket; 3. Seat cushion seat belt bracket; 4. Slide rail reinforcement plate; 5. Five-link shaft bracket; 6. Leg support installation interface; 7. Five-link; 8. Rear cross tube bracket; 9. Rear cross tube; 10. Five-link rotating shaft. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0026] Secondly, it should be noted that in the description of the present application, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0027] Reference Figures 1 to 4 The embodiment of the present application provides a five-link structure of a tilt-adjustable seat with a small space, which includes a slide rail reinforcement plate 4, a five-link pivot bracket 5, a five-link 7, a rear cross tube 9, a five-link rotation axis 10, a leg support mounting interface 6, a rear cross tube bracket 8, a seat cushion safety belt bracket 3, a backrest safety belt lock bracket 2 and a headrest mounting bent pipe 1.

[0028] Specifically, two slide rail reinforcement plates 4 are arranged in parallel. The two slide rail reinforcement plates 4 are fixed on the surface of the car floor, and two five-link rotating shaft brackets 5 slide on the corresponding slide rail reinforcement plates 4 respectively. Electric screw rod structures are respectively installed inside the two slide rail reinforcement plates 4. By driving of the electric screw rod structures, the five-link rotating shaft brackets 5 slide on the slide rail reinforcement plates 4 to adjust the front-back position of the entire seat.

[0029] Specifically, two groups of five-link mechanisms 7 are provided. Each group of five-link mechanisms 7 is pivotally connected to the five-link rotating shaft bracket 5 respectively. The five-link rotating shaft bracket 5 serves as the support body of the entire seat and is used to adjust the angle and state of the seat. The rear cross-tube bracket 8 is connected to the rear cross-tube 9 and the five-link mechanism 7. The rear cross-tube 9 and the five-link rotating shaft 10 are connected to the two five-link rotating shaft brackets 5. With the rear cross-tube 9 and the five-link rotating shaft 10 as the fulcrums, the five-link mechanism 7 moves to adjust the angle of the seat cushion, and in cooperation with the backrest, the inclination angle of the entire seat is adjusted.

[0030] Specifically, the leg rest mounting interface 6 is installed on the five-link mechanism 5. The leg rest mounting interface 6 provides rich functional interfaces as a functional component. The headrest mounting elbow 1 is fixed at the top of the backrest connected to the five-link rotating shaft bracket 5. The headrest mounting elbow 1 provides a mounting point for the headrest. The seat cushion seat belt bracket 3 is fixed on the five-link rotating shaft bracket 5, and the backrest seat belt lock bracket 2 is fixed on the backrest connected to the five-link rotating shaft bracket 5. Both provide mounting positions for the safety of the entire seat.

[0031] In this embodiment, two triangular prisms are symmetrically arranged on the five-link rotating shaft 10, and the connection between the triangular prism and the five-link rotating shaft 10 has a circular arc transition. By designing the structure of the five-link rotating shaft 10, the performance of the five-link rotating shaft is improved.

[0032] In this embodiment, the slide rail reinforcement plate 4 includes a first slide rail and a second slide rail. The second slide rail is detachably fixed on the first slide rail, and the five-link rotating shaft bracket 5 is in sliding fit with the first slide rail and the second slide rail.

[0033] Specifically, the first slide rail includes an L-shaped plate, and the upper part of the vertical plate of the L-shaped plate is bent inward to form a first bent plate parallel to the vertical plate. The second slide rail includes a C-shaped plate, and the upper parts of both sides of the C-shaped plate are bent inward to form second bent plates parallel to both sides thereof. The sliding plates on the five-link rotating shaft bracket 5 are in sliding fit with the first bent plate and the second bent plate on the slide rail reinforcement plate 4 respectively.

[0034] In this embodiment, the headrest mounting elbow 1 includes a C-shaped elbow. Both ends of the elbow form connecting pipes that deviate from the elbow and are arranged in parallel. The connecting pipes are used to connect with the backrest. Two flat mounting parts are symmetrically formed at the top of the elbow, and two square pipes are arranged on the mounting parts for the installation of the headrest.

[0035] This embodiment designs the front seat frame, seat belt fixing points, five-link mechanism and backrest head. Front seat frame design: A low BLOCK design is adopted to make the upper plane of the seat cushion closer to the installation surface, thereby achieving more compact space utilization. Seat belt fixing point design: Seat belt fixing points are provided on the backrest frame, and a reinforced structure is adopted to cope with the huge force during impact, meeting higher safety standards. Unique five-link mechanism: In view of the high chassis characteristics of electric vehicles, a method is specially designed to minimize the height space occupied by the five-link mechanism, ensuring that the required seat cushion tilt function can be achieved under low BLOCK conditions. Backrest head design: It is directly bent and welded to the upper crossbeam frame, with a simple structure and one-piece molding, achieving low cost and high efficiency. In addition, the backrest assembly adopts a hanging design, which simplifies the subsequent installation process of the headrest.

[0036] The working principle of the five-link structure of the tilt-angle adjustment seat with small space in this embodiment is as follows:

[0037] 1. With the rear cross tube 9 and the five-link rotating shaft 10 as the fulcrum, the five-link 7 moves to adjust the seat angle, and cooperates with the backrest to achieve the inclination adjustment of the entire seat; 2. The frame structure composed of the rear cross tube bracket 8, the five-link rotating shaft bracket 5, and the slide rail reinforcement plate 4 is the main body, which is a part of the connecting rod structure and carries various functional parts at the same time; 3. The headrest mounting elbow 1 provides a mounting point for the headrest; the backrest seat belt lock bracket 2 and the seat cushion seat belt bracket 3 provide an installation position for the safety of the entire chair; the leg support mounting interface 6 provides a rich functional interface as a functional part.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A five-link structure for an inclination-adjustable seat that occupies a small space, characterized in that: It comprises a slide rail reinforcement plate (4), a five-link shaft bracket (5), a five-link (7), a rear cross tube (9), a five-link rotating shaft (10), a leg support mounting interface (6), a rear cross tube bracket (8), a seat cushion safety belt bracket (3), a backrest safety belt lock bracket (2) and a headrest mounting elbow (1); The five-link pivot bracket (5) is slidably arranged on the slide rail reinforcement plate (4), the five-link (7) is arranged on the five-link pivot bracket (5), the rear transverse tube (9) and the five-link rotation axis (10) are connected to the two five-link pivot brackets (5), the rear transverse tube (9) and the five-link rotation axis (10) are fulcrums, the leg support mounting interface (6) is arranged on the five-link (7), the rear transverse tube bracket (8) is connected to the rear transverse tube (9) and the five-link (7), the seat cushion safety belt bracket (3) is arranged on the five-link pivot bracket (5), the backrest safety belt lock bracket (2) is arranged on the backrest connected to the five-link pivot bracket (5), and the headrest mounting elbow (1) is arranged on the top of the backrest connected to the five-link pivot bracket (5).

2. The five-link structure of the tilt-angle adjustment seat with small space occupation according to claim 1 is characterized in that: Two triangular prisms are symmetrically arranged on the five-link rotating shaft (10), and the connection between the triangular prisms and the five-link rotating shaft (10) is an arc transition.

3. The five-link structure of the tilt-angle-adjustable seat with small space occupation according to claim 1 is characterized in that: The slide rail reinforcement plate (4) comprises a first slide rail and a second slide rail, the second slide rail is arranged on the first slide rail, and the five-link shaft bracket (5) is slidably matched with the first slide rail and the second slide rail.

4. The five-link structure of the tilt-angle-adjustable seat with small space occupation according to claim 3 is characterized in that: The first slide rail comprises an L-shaped plate, and an upper portion of a vertical plate of the L-shaped plate is bent inward to form a first bent plate parallel to the vertical plate.

5. The five-link structure of the tilt-angle-adjustable seat with small space occupation according to claim 3 is characterized in that: The second slide rail comprises a U-shaped plate, and upper portions of both sides of the U-shaped plate are respectively bent inward to form second bent plates parallel to both sides thereof.

6. The five-link structure of the tilt-angle-adjustable seat with small space occupation according to claim 1, characterized in that: The headrest mounting elbow (1) comprises a C-shaped elbow, with parallel connecting pipes formed at both ends of the elbow, the connecting pipes being used to connect with a backrest, and two flat mounting parts being symmetrically formed at the top of the elbow, with two square pipes being arranged on the mounting parts, the square pipes being used to mount the headrest.

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