A small chair back table with angle adjustment function

Abstract

The present invention belongs to the technical field of automobile seats, and specifically relates to a small chair back table with an angle adjustment function, comprising: a table top plate, a table bottom plate, an intermediate reinforcing bracket installed between the table top plate and the table bottom plate, two sets of two-link mechanisms symmetrically installed on the intermediate reinforcing bracket for unfolding or folding the table, and a gear adjustment dial rotatably connected to the intermediate reinforcing bracket for adjusting the folding angle of the two-link mechanism, the two-link mechanism comprising: an upper link, a lower link, and a link fixing frame, one end of the upper link and the lower link is hinged on a hinge damper on the intermediate reinforcing bracket, the other end of the upper link and the lower link is hinged on the link fixing frame through an avoidance groove, and the link fixing frame is fixedly connected to a seat back frame; the advantage of the present invention is that the angle of the table can be adjusted to suit the second row of passengers along with the angle adjustment of the front seat, thereby improving the comfort requirements of the second row of passengers.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a small seat back table with an angle adjustment function. Background Art

[0002] In the field of small seatback tables, current mass-produced models only have horizontal tables in the designed position, that is, the table is horizontal when opened in the designed position of the front seat. When the front passenger adjusts the angle of the front seat backrest, the angle of the table changes and the horizontal position cannot be guaranteed. At this time, adjustable angle tables have become products urgently needed by the market. The angle of the table can be adjusted to suit the second-row passengers along with the angle adjustment of the front seats, thereby improving the comfort needs of the second-row passengers. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to provide a small seat back table with an angle adjustment function, which is used to manually adjust the angle of the table along with the front seats, so as to overcome the shortcomings of the above-mentioned prior art.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A small chair back table with an angle adjustment function, comprising: an upper cover plate on the table plate, a lower cover plate on the table plate, an intermediate reinforcing bracket installed between the upper cover plate and the lower cover plate on the table plate, two sets of two-link mechanisms for unfolding or folding the table plate symmetrically installed on the intermediate reinforcing bracket, and a gear adjustment dial wheel rotatably connected to the intermediate reinforcing bracket for adjusting the folding angle of the two-link mechanism, two avoidance grooves for the two-link mechanism to pass through are provided on the upper cover plate on the table plate, the two-link mechanism comprises: an upper link, a lower link, and a link fixing frame, one end of the upper link and the lower link is hinged to the hinge damper on the intermediate reinforcing bracket, the other end of the upper link and the lower link is hinged to the link fixing frame through the avoidance groove, the link fixing frame is fixedly connected to the seat back frame, and the gear adjustment dial wheel is rotatably connected to the seat back frame through the dial wheel shaft On the middle reinforcing bracket near the upper connecting rod, a driving friction edge is provided on one side of the gear adjustment wheel, and a step protrusion is provided on the other side of the gear adjustment wheel. At least three steps are provided on the step protrusion from low to high, and the step on the step protrusion is used to contact the upper connecting rod and limit its rotation angle. A waist-shaped hole is provided on the gear adjustment wheel, and a limit stop pin is fixedly connected to the position corresponding to the waist-shaped hole on the middle reinforcing bracket. The limit stop pin is placed in the waist-shaped hole to limit the rotation angle of the gear adjustment wheel. An angle adjustment groove is provided on the side of the lower cover plate of the table top to avoid the driving friction edge. The gear adjustment wheel is driven to rotate on the wheel shaft by manually rotating the driving friction edge at the angle adjustment groove. During the rotation of the gear adjustment wheel, the step on the step protrusion is driven to contact the upper connecting rod and adjust its landing position.

[0006] As a preferred embodiment of the present invention, the gear adjustment dial is in the shape of a Fibonacci spiral.

[0007] As a preferred embodiment of the present invention, five steps are arranged on the step protrusion, and the angles of the table top corresponding to the five steps from low to high are 0 degree, 2.297 degrees, 5.13 degrees, 7.621 degrees, and 9.849 degrees with the horizontal direction.

[0008] The advantages and positive effects of the present invention are:

[0009] 1. The seat back table of the present invention can be adjusted along with the angle of the front row seats to adjust the table angle suitable for the second row passengers, thereby improving the comfort requirements of the second row passengers.

[0010] 2. The gear adjustment dial of the present invention can be set with multiple gears, that is, steps corresponding to the adjustment angles can be set to match the multi-angle adjustment of the front seats.

[0011] 3. The gear adjustment dial of the present invention adopts a Fibonacci spiral shape, and the gear adjustment dial of this shape can be externally operated, that is, by opening an angle adjustment groove on the side of the lower cover plate of the table top, and using the friction edge of the angle adjustment groove to control the rotation of the gear adjustment dial. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention after it is unfolded.

[0013] Figure 2 It is a schematic diagram of the rear side of the overall structure of the present invention after folding.

[0014] Figure 3 It is a front schematic diagram of the overall structure after folding of the present invention.

[0015] Figure 4 This is one of the partial structural schematic diagrams of the present invention after the upper cover plate of the table top is removed.

[0016] Figure 5 This is the second schematic diagram of the partial structure of the present invention after removing the cover plate on the table top.

[0017] Figure 6 It is a schematic diagram of the Fibonacci spiral shape of the gear adjustment dial of the present invention.

[0018] Figure 7 It is a schematic diagram of the gear adjustment dial of the present invention.

[0019] Figure 8 It is a schematic diagram of the intermediate reinforcing bracket of the present invention.

[0020] Figure numerals: upper cover plate 1 of table top, lower cover plate 2 of table top, middle reinforcement bracket 3, two-link mechanism 4, gear adjustment dial 5, avoidance groove 6, upper connecting rod 7, lower connecting rod 8, connecting rod fixing bracket 9, dial wheel shaft 10, toggle friction edge 11, step protrusion 12, waist-shaped hole 13, limit stop pin 14, angle adjustment groove 15, hinge shaft damper 16, reinforcement support rod 17, upper connecting rod 18, lower connecting rod 19. DETAILED DESCRIPTION

[0021] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0022] See also Figure 1-8 The present embodiment provides a small chair back table with an angle adjustment function, including: an upper cover plate 1 on the table plate, a lower cover plate 2 on the table plate, an intermediate reinforcement bracket 3 installed between the upper cover plate 1 and the lower cover plate 2 on the table plate, two sets of two-link mechanisms 4 for unfolding or folding the table plate symmetrically installed on the intermediate reinforcement bracket 3, and a gear adjustment dial wheel 5 rotatably connected to the intermediate reinforcement bracket 3 for adjusting the folding angle of the two-link mechanism 4. Two avoidance grooves 6 for the two-link mechanism 4 to pass through are provided on the upper cover plate 1 on the table plate. The two-link mechanism 4 includes: an upper link 7, a lower link 8, and a link fixing frame 9. One end of the upper link 7 and the lower link 8 is hinged to the hinge damper 16 on the intermediate reinforcement bracket 3, and the other end of the upper link 7 and the lower link 8 is hinged to the link fixing frame 9 through the avoidance groove 6. The link fixing frame 9 is fixedly connected to the seat back frame to realize the connection between the table plate and the seat. The gear adjustment dial wheel 5 is connected to the seat back frame through the dial wheel shaft. 10 is rotatably connected to the middle reinforcing bracket 3 near the upper connecting rod 7, a toggle friction edge 11 is provided on one side of the gear adjustment dial wheel 5, and a step protrusion 12 is provided on the other side of the gear adjustment dial wheel 11, and at least five steps are provided on the step protrusion 12 from low to high, and the step on the step protrusion 12 is used to contact with the upper connecting rod 7 and limit its rotation angle, a waist-shaped hole 13 is provided on the gear adjustment dial wheel 5, and a limited stop pin 14 is fixedly connected to the middle reinforcing bracket 3 corresponding to the position of the waist-shaped hole 13, and the limited stop pin 14 is placed in the waist-shaped hole 13 to limit the rotation angle of the gear adjustment dial wheel 5, and an angle adjustment groove 15 for avoiding the toggle friction edge 11 is provided on the side of the table top lower cover 2, and the toggle friction edge 11 at the angle adjustment groove 15 is manually rotated to drive the gear adjustment dial wheel 5 to rotate on the dial wheel shaft 10, and during the rotation of the gear adjustment dial wheel 5, the step on the step protrusion 12 is driven to contact with the upper connecting rod 7 and adjust its landing position.

[0023] See also Figure 6The shape of the gear adjustment dial 5 in this embodiment is a Fibonacci spiral shape, wherein the size of the first spiral segment A is 8 mm, the size of the second spiral segment B is 5 mm, the size of the third spiral segment C is 3 mm, the size of the fourth spiral segment D is 2 mm, and the sizes of the fifth spiral segment E and the sixth spiral segment F are 1 mm.

[0024] In this embodiment, the step protrusion 12 is provided with five steps, and the five steps from low to high correspond to the table top and the horizontal angle of 0 degrees, 2.297 degrees, 5.13 degrees, 7.621 degrees, and 9.849 degrees, wherein, when the table top is opened, when the first step of the gear adjustment dial wheel 5 is turned to the bottom of the upper connecting rod 7, the first step is not in contact with the upper connecting rod 7, the step protrusion 12 does not work, and the table top can be opened to a horizontal state. When the table top is opened, when the second step of the gear adjustment dial wheel 5 is turned to the bottom of the upper connecting rod 7, the second step props up the upper connecting rod 7, so that the upper connecting rod 7 cannot continue to open, and the table top and the horizontal angle are 2.297 degrees. When the table top is opened, when the third step of the gear adjustment dial wheel 5 is turned to the bottom of the upper connecting rod 7, the third step props up the upper connecting rod 7, so that the upper connecting rod 7 cannot continue to open, and the table top and the horizontal angle are 5.13 degrees. When the table top is opened, when the fourth step of the gear adjustment dial wheel 5 is turned to the bottom of the upper connecting rod 7, the fourth step props up the upper connecting rod 7, so that the upper connecting rod 7 cannot be opened further, and the table top has an angle of 7.621 degrees with the horizontal. When the table top is opened, when the fifth step of the gear adjustment dial wheel 5 is turned to the bottom of the upper connecting rod 7, the fifth step props up the upper connecting rod 7, so that the upper connecting rod 7 cannot be opened further, and the table top has an angle of 9.849 degrees with the horizontal.

[0025] The hinge axis damper 16 in this embodiment is fixedly connected to the middle reinforcing bracket 3 by bolts, and the damping hinge axes of the two hinge axis dampers 16 are hinged to the upper connecting rod 7 and the lower connecting rod 8 respectively.

[0026] In the present embodiment, decorative cover plates are installed in the two avoidance grooves 6 on the upper cover plate 1 of the table board, and the decorative cover plates are used to make the avoidance grooves 6 look beautiful.

[0027] The middle reinforcing bracket 3 in this embodiment is composed of two left and right reinforcing support rods 17 , and an upper connecting rod 18 and a lower connecting rod 19 located between the two reinforcing support rods 17 .

[0028] Working principle: The support strength of the table board is improved by embedding the middle reinforcement bracket 3 between the table board upper cover plate 1 and the table board lower cover plate 2, and the table board uses two two-link mechanisms 4 to realize the connection between the table board and the backrest frame. The gear adjustment dial 5 is installed on the table board lower cover plate 2, and the gear adjustment dial 5 is used to adjust the angle of the two-link mechanism 4 to match the angle adjustment of the front seat to achieve the flatness requirement of the table board.

[0029] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A small chair back table with angle adjustment function, characterized in that: include: An upper cover plate of the table board, a lower cover plate of the table board, an intermediate reinforcing bracket installed between the upper cover plate of the table board and the lower cover plate of the table board, two sets of two-link mechanisms for unfolding or folding the table board symmetrically installed on the intermediate reinforcing bracket, and a gear adjustment dial wheel rotatably connected to the intermediate reinforcing bracket for adjusting the folding angle of the two-link mechanism, two avoidance grooves for the two-link mechanism to pass through are provided on the upper cover plate of the table board, the two-link mechanism includes: an upper link, a lower link, and a link fixing frame, one end of the upper link and the lower link is hinged to the hinge damper on the intermediate reinforcing bracket, the other end of the upper link and the lower link is hinged to the link fixing frame through the avoidance groove, the link fixing frame is fixedly connected to the seat back frame, the gear adjustment dial wheel is rotatably connected to the intermediate reinforcing bracket near the upper link through a dial wheel shaft, and the gear adjustment dial wheel A toggling friction edge is provided on one side of the gear adjustment wheel, and a step protrusion is provided on the other side of the gear adjustment wheel. At least three steps are provided on the step protrusion from low to high, and the step on the step protrusion is used to contact the upper connecting rod and limit its rotation angle. A waist-shaped hole is provided on the gear adjustment wheel, and a limit stop pin is fixedly connected to the position of the waist-shaped hole on the intermediate reinforcing bracket. The limit stop pin is placed in the waist-shaped hole to limit the rotation angle of the gear adjustment wheel. An angle adjustment groove is provided on the side of the lower cover plate of the table top to avoid the toggling friction edge. The gear adjustment wheel is driven to rotate on the wheel shaft by manually rotating the toggling friction edge at the angle adjustment groove. During the rotation of the gear adjustment wheel, the step on the step protrusion is driven to contact the upper connecting rod and adjust its landing position; the shape of the gear adjustment wheel is a Fibonacci spiral.

2. The seat back table with angle adjustment function according to claim 1, characterized in that: The step protrusion is provided with five steps, and the corresponding angles of the table top from low to high are 0 degree, 2.297 degrees, 5.13 degrees, 7.621 degrees, and 9.849 degrees with the horizontal.

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