Rising handrail

Abstract

The invention provides a rising handrail, which comprises a main body, a handrail body and an adjustment device, wherein the first end of the main body is combined with a chair; the second end of the main body is provided with a positioning groove; a plurality of positioning parts longitudinally arranged in parallel are arranged in the positioning groove; the surface of the inner wall of the handrail body is convexly provided with two longitudinal holding parts; the adjustment device comprises a combination body, a seizing piece and an elastic body; the combination body stretches through the handrail body and is combined with the handrail body; two longitudinal butting parts are formed on the outer surface of the combination body; the two longitudinal butting parts are just held by the two holding parts of the handrail body; the middle segment of the seizing piece is pivoted with the combination body; the first end of the seizing piece is convexly provided with a press part convexly stretching in a gap of the handrail body; and the second end of the seizing piece is convexly provided with a seizing part selectively seized by the positioning parts of the main body.

Description

technical field [0001] The invention relates to a handrail, in particular to a rising handrail with better structural strength. Background technique [0002] Please refer to Figure 11 It is a schematic diagram of adjusting the structure of the armrest of a traditional office chair, including: the top of the hollow sleeve body 91 is combined with the armrest body 92, and the top end of the hollow sleeve body 91 is also pivotally connected with a lock handle 93, and the lock handle 93 selectively engages the support body 94. The lock handle 93 is selectively positioned on the support body 94, further allowing the relative position of the hollow sleeve body 91 and the support body 94 to change, so as to achieve the purpose of raising and lowering the armrest. [0003] Wherein, the first end of the lock handle 93 is provided with a pivot shaft 931, the second end of the lock handle 93 is provided with a convex body 932, and the first end of the lock handle 93 forms a buckling p...

AI Technical Summary

Problems solved by technology

[0005] First, the first end of the lock handle 93 is pivotally connected to the hollow casing 91, and the second end is locked on the support body 94, and the lock handle 93 is pivoted by pulling the buckle part 933 at the first end of the lock handle 93, but , the pivot shaft 931 and the buckle part 933 of the lock handle 93 are located at the first end, and the balance of force cannot be achieved when the lock handle 93 is manipulated, and the lock handle 93 is pivotally connected to the top of the hollow casing 91 and there is also a lock handle 93 cannot really drive the absence of the hollow sleeve 91

[0006] Second, the position of the spring 934 is located in the middle of the pivot shaft 931 and the convex body 932. In other words, the spring 934 is located at the middle section of the pivot shaft 931, and one end of the spring 934 is pushed against the lock handle 93, and the other end is pushed against the lock handle 93. On the inner wall of the hollow casing 91, the spring 934 has not been well set in fact. When the lock handle 93 is manipulated, the spring 934 is easy to break away from the original predetermined position, so that the lock handle 93 loses the effect of the automatic locking of the reset, and when When the spring 934 falls between the lock handle 93 and the hollow sleeve 91, it will hinder the pivoting effect of the lock handle 93 in the hollow sleeve 91, further making the armrest lose the purpose of height adjustment

[0007] Third, the lock handle 93 is only pivotally connected to the hollow sleeve body 91 through the pivot shaft 931. When the handrail operator presses down on the handrail body by reciprocating operation, the lock handle 93 and the hollow sleeve body 91 are subjected to the downward force for a long time, and the lock handle 93 The pivotal shaft 931 often breaks away from the hollow sleeve 91, causing damage to the armrest and making it unusable

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