A type of handrail limiting shaft

Abstract

This utility model provides a handrail limiting shaft, belonging to the field of handrails. It solves the problem that most handrails on the market use a single point of support for limiting force, resulting in low support strength under greater pressure and potentially leading to handrail breakage. This utility model includes a main frame and two interlocking handrail frames. The main frame and handrail frames are connected by a hinge. One end of the main frame extends between the two handrail frames. One handrail frame is provided with a limiting plate for cooperating with and limiting the main frame. The main frame located between the handrail frames is provided with a mating part for abutting against the limiting plate. A slot is formed below the mating part. A mounting base is provided between the two handrail frames, and a support column is provided on the mounting base for cooperating with the slot.

Description

Technical Field

[0001] This utility model belongs to the field of handrails, and specifically relates to a handrail limiting shaft. Background Technology

[0002] Armrests are a common component of seats, used for resting the arms. During use, armrests are subjected to downward pressure. Most armrests on the market use a single point of support and limit, which is insufficient for supporting greater pressure and may cause the armrest to break. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a handrail limiting shaft.

[0004] The purpose of this utility model can be achieved through the following technical solution: a handrail limiting shaft, including a main frame and two interlocking handrail frames, characterized in that the main frame and the handrail frames are connected by a hinge, one end of the main frame extends into the space between the two handrail frames, a limiting plate is provided on one of the handrail frames for cooperating with the main frame for limiting, and a mating part is provided on the main frame located between the handrail frames for abutting against the limiting plate.

[0005] A slot is provided below the mating part, and a mounting base is provided between the two handrail frames. The mounting base is provided with a support column for mating with the slot.

[0006] The main frame has through holes, and ball bearings are engaged in the through holes. Both armrest frames have arc-shaped grooves at their bottom for cooperating with the ball bearings. The arc-shaped grooves extend upward to form guide grooves for limiting the ball bearings. A ball bearing compartment connected to the guide grooves is provided above the guide grooves.

[0007] In the aforementioned handrail limiting shaft, a reinforcing rib is provided between the support column and the rotating platform to strengthen the support column.

[0008] In the aforementioned handrail limiting shaft, trapezoidal protrusions for cooperating with the handrail frame are provided on both sides of the mounting base, and trapezoidal grooves corresponding to them are provided on the handrail frame.

[0009] In the aforementioned handrail limiting shaft, one side of the groove abuts against the support column, while the other side allows the support column to be rotated out.

[0010] Compared with existing technologies, this handrail limiting shaft enhances the support of the handrail through multiple support and limiting parts, reducing the risk of the handrail breaking due to excessive pressure. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the main body of the handrail limiting shaft;

[0012] Figure 2 This is a bottom view of the handrail's limiting axis;

[0013] Figure 3 This is an internal view of the armrest's limiting axis.

[0014] In the diagram, 1. Main frame; 2. Handrail frame; 3. Limiting plate; 4. Mating part; 5. Groove; 6. Mounting base; 7. Support column; 8. Ball bearing; 9. Arc groove; 10. Guide groove; 11. Ball bearing chamber; 12. Reinforcing rib; 13. Trapezoidal protrusion. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1 , Figure 2 , Figure 3 As shown, this handrail limiting shaft includes a main frame 1 and two interlocking handrail frames 2. The main frame 1 and the handrail frames 2 are connected by a hinge. One end of the main frame 1 extends between the two handrail frames 2. A limiting plate is provided on one handrail frame 2 for cooperating with the main frame 1 for limiting. A mating part 4 is provided on the main frame 1 located between the handrail frames 2 for abutting against the limiting plate.

[0017] A slot 5 is provided below the mating part 4, and a mounting base 6 is provided between the two handrail frames 2. A support column 7 is provided on the mounting base 6 for mating with the slot 5.

[0018] The main frame 1 has a through hole, and a ball bearing 8 is engaged in the through hole. The ball bearing 8 can be made of a metal material with a certain elasticity or a rubber material. To ensure the smooth rolling of the ball bearing 8, lubricating oil can be applied to the surface of the ball bearing 8. Both handrail frames 2 have an arc-shaped groove 9 at the bottom for cooperating with the ball bearing 8. The arc-shaped groove 9 extends upward to a guide groove 10 for limiting the ball bearing 8. A ball bearing chamber 11 connected to the guide groove 10 is provided above the guide groove 10.

[0019] During the downward rotation of the armrest frame 2, the ball bearing 8 will first come into contact with the arc groove 9, and then the ball bearing 8 will enter the arc groove 9 and eventually enter the ball bearing chamber 11 along the guide groove 10. At the same time, the support column 7 enters the slot 5 and abuts against one side of the slot 5, and the mating part 4 abuts against the limiting plate.

[0020] To elaborate further, a reinforcing rib 12 is provided between the support column 7 and the turntable to reinforce the support column 7 and prevent the support column 7 from breaking.

[0021] To elaborate further, trapezoidal protrusions 13 are provided on both sides of the mounting base to cooperate with the handrail frame 2. The handrail frame 2 is provided with corresponding trapezoidal grooves. The trapezoidal structure is more stable and more effectively fixes the mounting base.

[0022] To elaborate further, one side of the slot 5 abuts against the support column 7, while the other side allows the support column 7 to be rotated out. One side is used to reinforce the support of the handrail frame 2, and the other side prevents the support column 7 from interfering with the support column 7 during the rotation process, thus preventing it from getting stuck.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0024] Although this document frequently uses terms such as main frame 1, handrail frame 2, limiting plate, mating part 4, groove 5, mounting base 6, support column 7, ball bearing 8, arc groove 9, guide groove 10, ball bearing chamber 11, reinforcing rib 12, trapezoidal protrusion 13, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A handrail limiting shaft comprising a main frame (1) and two mutually engaged handrail frames (2), characterized in that, The main frame (1) and the handrail frame (2) are connected by a hinge. One end of the main frame (1) extends between the two handrail frames (2). One of the handrail frames (2) is provided with a limiting plate (3) for cooperating with and limiting the main frame (1). The main frame (1) located between the handrail frames (2) is provided with a mating part (4) for abutting against the limiting plate (3). The mating part (4) is provided with a slot (5) below, and a mounting base (6) is provided between the two handrail frames (2). The mounting base (6) is provided with a support column (7) for mating with the slot (5). The main frame (1) has a through hole, and a ball (8) is engaged in the through hole. Both armrest frames (2) have an arc groove (9) for cooperating with the ball (8) at the bottom. The arc groove (9) extends upward to form a guide groove (10) for limiting the ball (8). A ball chamber (11) connected to the guide groove (10) is provided above the guide groove (10).

2. A handrail limit shaft according to claim 1, wherein A reinforcing rib (12) is provided between the support column (7) and the turntable to reinforce the support column (7).

3. A handrail limit shaft according to claim 1, wherein The mounting base (6) has trapezoidal protrusions (13) on both sides for cooperating with the handrail frame (2), and the handrail frame (2) has trapezoidal grooves on both sides.

4. A handrail limit shaft according to claim 1, wherein The slot (5) abuts against the support column (7) on one side, and the support column (7) can be spun out on the other side.

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