Synchronous telescopic control mechanism for armrests on two sides

Abstract

The utility model discloses a double-side handrail synchronous telescopic control mechanism which comprises a backrest, a base is fixedly installed in the backrest, a first threaded rod and a second threaded rod which extend in the width direction of the backrest are rotationally installed at the two ends of the base respectively, and the first threaded rod is sleeved with a first threaded matching piece matched with the first threaded rod in a threaded mode. The second threaded rod is sleeved with a second threaded matching piece in threaded fit with the second threaded rod, and the first threaded matching piece and the second threaded matching piece are opposite in thread turning direction. The first threaded matching piece is connected with a left armrest, the second threaded matching piece is connected with a right armrest, the first threaded matching piece and the second threaded matching piece are both slidably installed in the width direction of the backrest, a motor is arranged on the base and used for driving the first threaded rod and the second threaded rod to rotate synchronously, and the first threaded rod and the second threaded rod rotate synchronously under the transmission effect of threads. And the first screw-thread fitting piece and the second screw-thread fitting piece can be forced to move in opposite directions. The utility model has the beneficial effects that the single motor is adopted for driving, the size is small, and the synchronism is good.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive seat armrest components, specifically to a synchronous telescopic control mechanism for dual-side armrests. Background Technology

[0002] As people's living standards improve, consumers have increasingly higher requirements for the quality of car interiors and the comfort of seating. To meet these diverse needs, more and more car models are starting to equip themselves with seat armrests to enhance comfort. Traditional car seat armrests mainly come in two forms: one is located on the side of the seat back and can be manually rotated forward, and the other is fixed to both sides of the seat. These traditional forms are functionally limited, inconvenient to use, and take up interior space when not in use.

[0003] To meet the increasingly diverse in-car environments, hidden seat armrests have emerged on the market. These armrests can be stored on both sides of the seat and unfolded when in use, reducing the space occupied on the sides of the seat when not in use. Currently, the armrest control mechanisms are all located inside the seat back. The movement control of the armrests mainly employs two methods: one uses two sets of control mechanisms to control the armrests on both sides of the seat separately. This method occupies a large amount of space and significantly impacts the layout of other modules inside the seat back, and the armrests are rarely used independently. The other method uses a single motor to drive the armrests synchronously through gear transmission or other means. However, most synchronously controlled armrests currently suffer from poor synchronization; inconsistent opening speeds between the two armrests affect user comfort. Utility Model Content

[0004] In view of this, the present invention provides a dual-side handrail synchronous telescopic control mechanism, which has the advantages of good synchronization and small size.

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

[0006] A dual-sided armrest synchronous telescopic control mechanism includes a backrest. A base is fixedly installed inside the backrest. A first threaded rod and a second threaded rod are rotatably installed at both ends of the base. Both the first and second threaded rods extend along the width direction of the backrest. A first threaded fitting is fitted onto the first threaded rod, and a second threaded fitting is fitted onto the second threaded rod, with the threads of the first and second threaded fittings having opposite directions. The first threaded fitting is connected to the left armrest, and the second threaded fitting is connected to the right armrest. Both the first and second threaded fittings are slidably installed along the width direction of the backrest. A motor is installed on the base to drive the first and second threaded rods to rotate synchronously. The rotation of the first and second threaded rods, under the transmission action of the threads, forces the first and second threaded fittings to move in opposite directions.

[0007] The above structure uses a single motor to drive the armrests on both sides via a screw drive principle. The screw threads on both sides rotate in opposite directions, allowing for synchronous extension and retraction. This design is easy to adjust, has good synchronization, and is simple, compact, and small in size, without affecting the arrangement of other modules inside the backrest.

[0008] Preferably, the base is further provided with a limiting component, which is used to allow the first threaded engagement member and the second threaded engagement member to slide along the width direction of the backrest. This structure restricts the rotation of the first threaded engagement member and the second threaded engagement member.

[0009] Preferably, both the first and second threaded mating parts are provided with guide structures protruding radially outward. The limiting assembly includes a guide groove formed on the base, the guide groove being along the axial direction of the first and second threaded rods, and the guide structures are slidably fitted within the guide groove. This structure is simple and allows the first and second threaded mating parts to slide along the width direction of the backrest under the drive of the motor.

[0010] Preferably, a left connecting rod is fixedly connected to the inner side of the left armrest. The left connecting rod is a hollow structure, with a gap fitting onto the first threaded rod. The first threaded fitting is located inside the left connecting rod and is fixedly connected to it. This structure provides greater stability and facilitates connection.

[0011] Preferably, a right connecting rod is fixedly connected to the inner side of the right handrail. The right connecting rod is a hollow structure, with a gap fitting onto the second threaded rod. The second threaded fitting is located inside the right connecting rod and is fixedly connected to it. This structure provides greater stability and facilitates connection.

[0012] Preferably, both the left and right connecting rods have mounting holes on their side walls, and the guide structures pass through these mounting holes, with their ends slidably fitted into the guide grooves. This structure is compact and easy to install.

[0013] Preferably, the motor is connected to a synchronizing rod, and the two ends of the synchronizing rod are respectively connected to a first threaded rod and a second threaded rod via couplings. This structure provides a simple and stable connection, and the motor drives the synchronizing rod to rotate, causing the first and second threaded rods to rotate synchronously.

[0014] Preferably, an extension rod is fixedly connected between the second threaded rod and the synchronizing rod. This structure facilitates symmetrical installation of the handrails on both sides.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The present invention provides a synchronous telescopic control mechanism for double-sided handrails, which is driven by a motor and controls the handrails on both sides through the principle of screw transmission. The screw threads of the handrails on both sides rotate in opposite directions. When the first screw rod and the second screw rod rotate synchronously, the first screw thread mating part and the second screw thread mating part can slide synchronously inward and outward to drive the handrails on both sides to telescopically extend and retract synchronously. It is easy to adjust and has good synchronization.

[0017] 2. The overall layout of the control mechanism is linear, with a simple and compact structure, small size, and minimal space occupation, without affecting the layout of other modules inside the backrest. Attached Figure Description

[0018] Figure 1 This is an installation diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3 A schematic diagram illustrating the limiting component 7;

[0021] Figure 4 This is a schematic diagram illustrating that the threads on both sides rotate in opposite directions. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, a dual-sided armrest synchronous telescopic control mechanism includes a backrest B, a base A fixedly installed inside the backrest B, and a first threaded rod 3 and a second threaded rod 4 rotatably installed on the base A. Both the first threaded rod 3 and the second threaded rod 4 extend along the width direction of the backrest B. As shown... Figure 3As shown, a first threaded fitting 5 is fitted on the first threaded rod 3 and a second threaded fitting 6 is fitted on the second threaded rod 4 and a second threaded fitting 6 is fitted on the second threaded rod 4. The first threaded fitting 5 is connected to the left armrest 8 and the second threaded fitting 6 is connected to the right armrest 9. A limiting component 7 is provided on the base A to allow the first threaded fitting 5 and the second threaded fitting 6 to slide along the width direction of the backrest B.

[0024] like Figure 4 As shown, a motor 1 is mounted on base A. The motor 1 is connected to a synchronizing rod 2. The two ends of the synchronizing rod 2 are connected to a first threaded rod 3 and a second threaded rod 4 respectively via couplings 10. To ensure symmetrical installation of the handrails on both sides, an extension rod 11 is also fixedly connected between the second threaded rod 4 and the synchronizing rod 2. The motor 1 drives the synchronizing rod 2 to rotate, which in turn drives the first threaded rod 3 and the second threaded rod 4 to rotate synchronously. The threads of the first threaded rod 3 and the second threaded rod 4 have opposite directions of rotation, and the corresponding threads of the first threaded mating parts 5 and the second threaded mating parts 6 also have opposite directions of rotation. When the first threaded rod 3 and the second threaded rod 4 rotate synchronously, under the transmission action of the threads, the first threaded mating parts 5 and the second threaded mating parts 6 can be forced to move in opposite directions, thereby driving the handrails on both sides to extend and retract synchronously.

[0025] like Figure 3 As shown, in this embodiment, a left connecting rod 81 is fixedly connected to the inner side of the left handrail 8, and a right connecting rod 91 is fixedly connected to the inner side of the right handrail 9. Both the left connecting rod 81 and the right connecting rod 91 are hollow structures, respectively fitted onto the first threaded rod 3 and the second threaded rod 4 with a gap. The first threaded fitting 5 is located inside the left connecting rod 81 and is fixedly connected to it. The second threaded fitting 6 is located inside the right connecting rod 91 and is fixedly connected to it. Both the first threaded fitting 5 and the second threaded fitting 6 are provided with guide structures 5a that protrude radially outward. The limiting component 7 includes a guide groove C opened on the base A. The guide groove C is along the axial direction of the first threaded rod 3 and the second threaded rod 4. The side walls of both the left connecting rod 81 and the right connecting rod 91 are provided with mounting holes 81a. The guide structures 5a pass through the mounting holes 81a and are slidably fitted into the guide groove C at their ends.

[0026] like Figure 3 and Figure 4 As shown, in this embodiment, a motor 1 drives the first threaded engagement component 5 and the second threaded engagement component 6 using a screw drive principle. The first threaded engagement component 5 and the second threaded engagement component 6 are connected to the armrests on both sides through a left connecting rod 81 and a right connecting rod 91. Since the threads of the first threaded engagement component 5 and the second threaded engagement component 6 have opposite directions, under the transmission action of the threads, the first threaded engagement component 5 and the second threaded engagement component 6 can be forced to move in opposite directions to drive the armrests on both sides to extend and retract synchronously. The adjustment is convenient, the synchronization is good, and the structure is simple, compact, and small in size, without affecting the arrangement of other modules inside the backrest.

[0027] 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 dual sided handrail synchronous telescoping control mechanism characterized by: The backrest (B) is internally fixedly provided with a base (A), the base (A) is rotatably provided with a first threaded rod (3) and a second threaded rod (4) at two ends respectively, the first threaded rod (3) and the second threaded rod (4) extend along the width direction of the backrest (B), the first threaded rod (3) is provided with a first threaded fitting (5) which is threadedly matched with the first threaded rod (3), the second threaded rod (4) is provided with a second threaded fitting (6) which is threadedly matched with the second threaded rod (4), and the first threaded fitting (5) and the second threaded fitting (6) are oppositely threaded. The first threaded fitting (5) is connected with a left armrest (8), the second threaded fitting (6) is connected with a right armrest (9), the first threaded fitting (5) and the second threaded fitting (6) are slidably arranged along the width direction of the backrest (B), and the base (A) is provided with a motor (1) for driving the first threaded rod (3) and the second threaded rod (4) to synchronously rotate. The first threaded rod (3) and the second threaded rod (4) rotate, and under the transmission of threads, the first threaded fitting (5) and the second threaded fitting (6) are forced to move in opposite directions.

2. A dual side handrail synchronous extension and retraction control mechanism according to claim 1, characterized in that: The base (A) is further provided with a limiting assembly (7) for enabling the first threaded fitting (5) and the second threaded fitting (6) to slide along the width direction of the backrest (B).

3. A dual side handrail synchronous extension and retraction control mechanism according to claim 2, wherein: The first threaded fitting (5) and the second threaded fitting (6) are both provided with a guide structure (5a) which protrudes outward in the radial direction thereof, the limiting assembly (7) comprises a guide groove (C) formed in the base (A), the guide groove (C) is along the axial direction of the first threaded rod (3) and the second threaded rod (4), and the guide structure (5a) is slidably sleeved in the guide groove (C).

4. A dual side handrail synchronous extension and retraction control mechanism according to claim 3, wherein: The left armrest (8) is fixedly connected with a left connecting rod (81) on the inner side, the left connecting rod (81) is a hollow structure, is gap-sleeved on the first threaded rod (3), and the first threaded fitting (5) is located in the left connecting rod (81) and is fixedly connected with the left connecting rod (81).

5. A dual side handrail synchronous extension and retraction control mechanism according to claim 4, wherein: The right armrest (9) is fixedly connected with a right connecting rod (91) on the inner side, the right connecting rod (91) is a hollow structure, is gap-sleeved on the second threaded rod (4), and the second threaded fitting (6) is located in the right connecting rod (91) and is fixedly connected with the right connecting rod (91).

6. A dual side handrail synchronous telescoping control mechanism as claimed in claim 5, wherein: The left connecting rod (81) and the right connecting rod (91) are both provided with a mounting hole (81a) in the side wall, the guide structure (5a) penetrates through the mounting hole (81a) and is slidably sleeved in the guide groove (C) at the terminal end.

7. A dual side handrail synchronous telescoping control mechanism as claimed in claim 1, wherein: The motor (1) is connected with a synchronous rod (2), the synchronous rod (2) is connected with the first threaded rod (3) and the second threaded rod (4) through a shaft coupling (10) at two ends respectively.

8. A dual side handrail synchronous telescoping control mechanism as claimed in claim 7, wherein: An extension rod (11) is fixedly connected between the second threaded rod (4) and the synchronous rod (2).

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