Small table plate mechanism for automobile seat backrest

Abstract

The utility model discloses a small table plate mechanism for an automobile seat backrest, which comprises a base fixedly mounted on the rear side of the seat backrest. The small table plate is rotatably arranged on the rear side of the base through a transmission assembly in a turnover manner; the driving mechanism comprises a motor fixedly arranged on the base, a synchronous rod rotationally installed on the base and angle adjusters connected to the two ends of the synchronous rod in a transmission mode, the motor is used for driving the synchronous rod to rotate, and the output ends of the angle adjusters are connected with the transmission assembly; the motor drives the synchronous rod to rotate and can drive the transmission assembly to move under the transmission effect of the angle adjuster so that the small table board can be turned over and switched between the unfolding position and the folding position. The utility model has the beneficial effects that the angle adjuster provides sufficient bearing force, so that the small table plate can be kept stable and does not shake at any position, and the use comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat components technology, specifically to a small table mechanism for automotive seat backrests. Background Technology

[0002] As people's living standards improve, consumers have increasingly higher requirements for the quality of car interiors. To meet these diverse needs, more and more car models are equipping seat tray tables as standard or optional features. Seat tray tables enhance passenger comfort and convenience. They are typically installed behind the front seats, are foldable, space-saving, and can be used for work, reading, entertainment, and other purposes.

[0003] Traditional car seats are mostly folded and unfolded manually, which is inconvenient and cannot be leveled. To improve ease of use, electric tray tables have been developed, driven by a motor. Existing electric tray tables either directly drive the shaft or work in conjunction with lead screws and gears. Due to the vibrations during prolonged car driving, the connection points of the lead screws and gears are prone to loosening, resulting in insufficient load-bearing capacity and poor stability of the tray table. This leads to wobbling during use, significantly affecting comfort. Utility Model Content

[0004] In view of this, the present invention provides a small table mechanism for the backrest of a car seat, the purpose of which is to solve the problems of insufficient load-bearing capacity and poor stability of existing electric seat small tables.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A small table mechanism for a car seat back includes a base for fixed installation on the rear side of the seat back;

[0007] A small table, which is rotatably mounted on the rear side of the base via a transmission assembly; and

[0008] The drive mechanism includes a motor fixed on the base, a synchro rod rotatably mounted on the base, and an angle adjuster connected to both ends of the synchro rod. The motor is used to drive the synchro rod to rotate, and the output end of the angle adjuster is connected to the transmission assembly.

[0009] The motor drives the synchronous rod to rotate, which in turn drives the transmission component to move under the transmission action of the angle adjuster, so as to realize the flipping and switching of the small table between the unfolded position and the folded position.

[0010] With the above structure, the angle adjuster can provide sufficient load-bearing capacity, allowing the small table to stop stably and without wobbling in any position, and the seat back can also be leveled when tilted back, improving the comfort of use.

[0011] Preferably, the transmission assembly includes a first connecting rod and a second connecting rod. The two ends of the second connecting rod are rotatably connected to the base and the small table, respectively. One end of the first connecting rod is rotatably connected to the small table, and the other end is connected to the output end of the angle adjuster. This structure facilitates the unfolding and folding of the small table.

[0012] Preferably, the output end of the angle adjuster is connected to a drive shaft, and the end of the first connecting rod is fixed to the drive shaft. This structure transmits power.

[0013] Preferably, the base is provided with a motor mounting plate and two angle adjuster mounting plates. The motor is mounted on the motor mounting plate, and the two angle adjusters are respectively mounted on the two angle adjuster mounting plates. This structure facilitates installation, is compact, and saves space.

[0014] Preferably, the motor mounting plate and the two angle adjuster mounting plates are arranged along the width direction of the back plate, and each has a through hole for the synchronous rod to pass through. This structure facilitates installation.

[0015] Preferably, both the first and second connecting rods are in pairs and symmetrically arranged on both sides of the small table's width. This structure ensures that the small table is subjected to balanced forces.

[0016] Preferably, the angle adjuster is symmetrically arranged at both ends of the small table. This structure makes the small table more stable.

[0017] Preferably, the base has receiving grooves on both sides, and the first and second connecting rods pass through the receiving grooves. When the small table is in the folded position, the first and second connecting rods are located within the receiving grooves. With the above structure, the small table can fit snugly against the back of the seat back when folded.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The small table mechanism for the back of a car seat provided by this utility model drives the small table to rotate through a combination of a motor and an adjuster. When stopped, it can provide sufficient support to keep the small table stable and not wobbling. The adjuster can keep the small table in any position and can also keep it level when the front seat is reclined, thus improving the comfort of use.

[0020] 2. The motor and adjuster are tightly installed and can be completely placed inside the seat back, without taking up rear passenger space. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 To illustrate the structural diagram of motor mounting plate 21 and angle adjuster mounting plate 41;

[0023] Figure 3 To illustrate the structural diagram of transmission component C;

[0024] Figure 4 A schematic diagram showing the receiving tank a;

[0025] Figure 5 Showing a cross-sectional view of drive shaft 7;

[0026] Figure 6 This is a schematic diagram of the folded-down table 1. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] like Figure 1 and Figure 6 As shown, a small table mechanism for a car seat back includes a base B and a small table 1. The base B is fixedly installed on the rear side of the seat back D, and the small table 1 is rotatably installed on the rear side of the base B via a transmission assembly C. A drive mechanism A is also included, which drives the small table 1 to unfold rearward relative to the base B or fold onto the base B. The drive mechanism A includes a motor 2, a synchronizing rod 3, and an adjuster 4. The motor 2 is fixed to the base B, and the synchronizing rod 3 is rotatably mounted on the base B along its width. The motor 2 drives the synchronizing rod 3 to rotate. Two adjusters 4 are symmetrically arranged on the synchronizing rod 3 corresponding to the two ends of the small table 1. Both adjusters 4 are poweredly connected to the synchronizing rod 3. The motor 2 is located between the two adjusters 4, and the two adjusters 4 are directly or indirectly connected to the transmission assembly C.

[0029] In this embodiment, the angle adjuster 4 is a mature product in the field, and its working principle will not be described in detail in this embodiment.

[0030] like Figure 2 As shown, the base B has a motor mounting plate 21 perpendicular to the main body of the base B and two angle adjuster mounting plates 41. The three are located in the middle of the base B. The motor 2 is fixedly mounted on the motor mounting plate 21 facing the base B, and the two angle adjusters 4 are fixedly mounted on the two angle adjuster mounting plates 41 respectively. The structure is compact and can be placed inside the seat back D. The two angle adjuster mounting plates 41 and the motor mounting plate 21 are arranged along the width direction of the base B, and each has a through hole 3a for the synchronous rod 3 to pass through.

[0031] like Figure 3 and Figure 4 As shown, the transmission assembly C includes a first connecting rod 5 and a second connecting rod 6. Both the first connecting rod 5 and the second connecting rod 6 are in pairs and symmetrically arranged on both sides of the width of the small table 1. The two ends of the second connecting rod 6 are rotatably connected to the base B and the small table 1, respectively. One end of the first connecting rod 5 is rotatably connected to the small table 1, and the other end is connected to the output end of the angle adjuster 4. Figure 5 As shown, in this embodiment, the output end of the angle adjuster 4 is connected to the drive shaft 7, and the end of the first connecting rod 5 is fixed to the drive shaft 7. The second connecting rod 6 is located above the first connecting rod 5, and the first connecting rod 5, the second connecting rod 6, the small table 1, and the base B form a four-bar linkage. The hinge point of the second connecting rod 6 on the small table 1 is located behind the first connecting rod 5. In the unfolded state, the position of the second connecting rod 6 at the front end of the small table 1 is constructed in a zigzag shape to avoid obstruction, ensuring that the usable surface of the small table 1 is flat and unobstructed.

[0032] like Figure 3 and Figure 4 As shown, both sides of the base B are provided with receiving grooves a. The first connecting rod 5 and the second connecting rod 6 pass through the receiving grooves a. When the small table 1 is in the folded position, the first connecting rod 5 and the second connecting rod 6 can be completely folded into the receiving grooves a, so that the small table 1 can be completely folded down. Figure 6 The image shows the state of being tightly attached to base B. (As shown) Figure 1 and Figure 3 As shown, when the table needs to be unfolded for use, motor 2 drives synchronous rod 3 to rotate. Synchronous rod 3 transmits power to the angle adjuster 4 connected at both ends. Under the transmission action of angle adjuster 4, the first connecting rod 5 of transmission component C rotates, realizing the flipping and switching of the small table 1 between the unfolded position and the folded position. During this process, after the small table 1 stops at any position, the angle adjuster 4 can provide sufficient load-bearing capacity to keep the small table 1 stable and not wobbling. Therefore, even if the front seats are tilted back, the small table 1 can still move horizontally, making it convenient to use.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A small table mechanism for a car seat backrest, characterized in that, include: Base (B), said base (B) is used for fixed installation on the rear side of the seat back; Small table (1), the small table (1) being rotatably turned on the rear side of the base (B) via a transmission assembly (C); as well as The drive mechanism (A) includes a motor (2) fixed on a base (B), a synchro rod (3) rotatably mounted on the base (B), and an angle adjuster (4) connected to both ends of the synchro rod (3). The motor (2) is used to drive the synchro rod (3) to rotate, and the output end of the angle adjuster (4) is connected to the transmission assembly (C). The motor (2) drives the synchronizing rod (3) to rotate, which can drive the transmission component (C) to move under the transmission action of the angle adjuster (4), so as to realize the small table (1) to flip and switch between the unfolded position and the folded position.

2. The small table mechanism for a car seat backrest according to claim 1, characterized in that: The transmission assembly (C) includes a first link (5) and a second link (6). The two ends of the second link (6) are rotatably connected to the base (B) and the small table (1), respectively. One end of the first link (5) is rotatably connected to the small table (1), and the other end is connected to the output end of the angle adjuster (4).

3. The small table mechanism for a car seat backrest according to claim 2, characterized in that: The output end of the angle adjuster (4) is connected to the drive shaft (7), and the end of the first connecting rod (5) is fixed to the drive shaft (7).

4. The small table mechanism for a car seat backrest according to claim 1, characterized in that: The base (B) is provided with a motor mounting plate (21) and two angle adjuster mounting plates (41). The motor (2) is mounted on the motor mounting plate (21), and the two angle adjusters (4) are respectively mounted on the two angle adjuster mounting plates (41).

5. A small table mechanism for a car seat backrest according to claim 4, characterized in that: The motor mounting plate (21) and the two angle adjuster mounting plates (41) are arranged along the width direction of the base (B), and each of them has through holes (3a) for passing through the synchronizing rod (3).

6. A small table mechanism for a car seat backrest according to claim 2, characterized in that: The first link (5) and the second link (6) are both in two sets and are symmetrically arranged on both sides of the width direction of the small table (1).

7. A small table mechanism for a car seat backrest according to claim 1, characterized in that: The angle adjuster (4) is symmetrically arranged at both ends relative to the small table (1).

8. A small table mechanism for a car seat backrest according to claim 2, characterized in that: The base (B) has receiving grooves (a) on both sides. The first connecting rod (5) and the second connecting rod (6) pass through the receiving grooves (a). When the small table (1) is in the folded position, the first connecting rod (5) and the second connecting rod (6) are located in the receiving grooves (a).

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