一种可调节支臂

Abstract

本实用新型公开了一种可调节支臂，包括：支臂固定座、可相对于支臂固定座绕轴进行水平往复的支臂基座、和支臂固定座保持同一平面内往复运动的支臂连接座，和支臂连接座保持平行运动的支臂连接头，以及用于连接支臂固定座和支臂连接座的第一支臂、用于连接支臂固定座和支臂连接头的第二支臂，所述第一支臂通过第一销轴和第二销轴连接，所述第二支臂通过第三销轴和第四销轴连接，可调支臂在负载、弹力和阻尼之间在运行范围内达到力矩平衡。

Claims

1. An adjustable arm, comprising: The support arm fixing seat (1), the first support arm (5), and the second support arm (6) are provided. One end of the support arm fixing seat (1) is swayably connected to one end of the first support arm (5) via a first pin (9), and the other end of the first support arm (5) is swayably connected to the second support arm (6) via a support arm connecting seat (3). The support arm fixing seat further includes: The support arm base (2) is connected to one end of the support arm fixing seat (1) via a rotating shaft, and the support arm fixing seat (1) and the support arm base (2) can rotate freely relative to each other; The two ends of the support arm connecting seat (3) are respectively equipped with a second pin (10) and a third pin (11), which are rotatably connected to the first support arm (5) and the second support arm (6); The fixed end of the outrigger connector (4) is rotatably mounted with a fourth pin (12), and the outrigger connector (4) is swayably connected to one end of the second outrigger (6) through the fourth pin (12); The arm connector (3) and the arm connector (4) remain parallel to each other at any operating position.

2. The adjustable arm of claim 1, wherein, The arm fixing seat (1) and the arm connecting seat (3) are provided with a first rotation center. The first rotation center on the arm fixing seat (1) and the arm connecting seat (3) is oscillatingly connected by a first connecting strip (7). The rotation center axis in the first rotation center forms a first parallelogram structure with the rotation center axis of the first pin (9) and the second pin (10) on the first arm (5).

3. The adjustable arm of claim 1, wherein, The arm connecting seat (3) and the arm connecting head (4) are provided with a second rotation center. A second connecting strip (8) is oscillatingly connected between the two second rotation centers. The rotation center axis of the second rotation center forms a second parallelogram structure with the rotation center axes of the third pin (11) and the fourth pin (12).

4. The adjustable arm of claim 1, wherein, The arm mounting base (1) is provided with a first one-way rotation assembly (13), which is used to lock the first pin (9) relative to the arm mounting base (1) or the first arm (5) in one direction.

5. The adjustable arm of claim 1, wherein, The arm connecting seat (3) is also provided with a second one-way rotation component (13), which is used to lock the third pin (11) relative to the second arm (6) or the arm connecting seat (3) in one direction.

6. The adjustable arm of claim 2, wherein, One of the fulcrums of the first parallelogram is the first common pivot, and a fifth pivot (14) is provided. A first elastic component (16) is connected between the first common pivot and the fifth pivot (14).

7. The adjustable arm of claim 2, wherein, The second pin (10) is not rotatable relative to the support arm connecting seat (3), but is rotatable relative to the first support arm (5).

8. The adjustable arm of claim 3, wherein, One of the fulcrums of the second parallelogram is the second common pivot, and a sixth pivot (15) is provided. A second elastic component (17) with adjustable force value is installed between the second common pivot and the sixth pivot (15).

9. The adjustable arm of claim 3, wherein, The fourth pin (12) is non-rotatable relative to the arm connector (4), but rotatable relative to the second arm (6).

10. The adjustable arm of claim 4, wherein, The first pin shaft (9) and the second pin shaft (10) are provided with spring leaves (18), and the third pin shaft (11) and the fourth pin shaft (12) are also provided with spring leaves (18), and one side of the spring leaves (18) is provided with adjusting shims (19) which are tightly connected with the spring leaves (18).

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