Safety handrail capable of displaying suction force

Abstract

A safety handrail contains: a body, two hollow suckers, two sucking disc units, and two display units. The body includes multiple griping portions. Two hollow suckers are fitted on two ends of the body respectively. The two sucking disc units are accommodated in the two hollow suckers separately, and the two display units are symmetrically disposed beside the two hollow suckers respectively. Each of the two display units includes an accommodation chamber having a window and a through hole, each display unit includes a resilient element housed in the accommodation chamber, and each display unit further includes a movable element accommodated in the accommodation chamber. Furthermore, the movable element has a first section, a second section, and a third section passing through the through hole.

Claims

1. A safety handrail comprising: a body including multiple griping portions; two hollow suckers fitted on two ends of the body respectively; two sucking disc units accommodated in the two hollow suckers separately; and two display units symmetrically disposed beside the two hollow suckers respectively; wherein each of the two display units includes an accommodation chamber having a window and a through hole, each display unit includes a resilient element housed in the accommodation chamber, and each display unit further includes a movable element accommodated in the accommodation chamber, wherein the movable element is a column and has a first section, a second section, and a third section passing through the through hole, wherein the moveable element is configured such that when the third section abuts against a wall, the resilient element is compressed and the second section is visible in the window, and further such that when the third section does not abut against a wall, the resilient element is not compressed and pushes the movable element so that the first section is visible in the window.

2. The safety handrail as claimed in claim 1, wherein the first section has a first color coated thereon.

3. The safety handrail as claimed in claim 1, wherein the second section has a second color coated thereon.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view showing the assembly of a safety handrail according to a preferred embodiment of the present invention.

(2) FIG. 2 is another perspective view showing the assembly of the safety handrail according to the preferred embodiment of the present invention.

(3) FIG. 3 is a cross sectional view showing the assembly of a display unit of the safety handrail according to the preferred embodiment of the present invention.

(4) FIG. 4 is a cross sectional view showing the operation of the display unit of the safety handrail according to the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.

(6) With reference to FIGS. 1 and 2, a safety handrail capable of displaying suction force according to a preferred embodiment of the present invention comprises:

(7) a body 1 including multiple griping portions 11 and being a hollow tube;

(8) two hollow suckers 2 fitted on two ends of the body 1 respectively;

(9) two sucking disc units 3 accommodated in the two hollow suckers 2 separately.

(10) Referring further to FIGS. 3 and 4, two display units 4 are symmetrically disposed beside the two hollow suckers 2 respectively, wherein each of the two display units 4 includes an accommodation chamber 41 having a window 411 and a through hole 412, and each display unit 4 includes a resilient element 42 housed in the accommodation chamber 41, each display unit 4 further includes a movable element 43 accommodated in the accommodation chamber 41 and fitting with the resilient element 42, wherein the movable element 43 has a first section 431, a second section 432, and a third section 433 passing through the through hole 412. The movable element 43 is a column, the first section 431 has a first color (i.e. red) coated thereon, and the second section 432 has a second color (i.e. green) coated thereon.

(11) As shown in FIG. 4, in operation, when the two sucking disc units 3 of the safety handrail securely draw a wall 5, the third section 433 of the movable element 43 of each display unit 4 abuts against the wall 5 (by which the resilient element 42 is pressed), the first color (i.e. the red) of the movable element 43 hides in the accommodation chamber 41 of each display unit 4, while the second color (i.e. the green) of the movable element 43 is visible via the window 411 so as to indicate each of the two sucking disc units 3 draws the wall 5 strongly and safety.

(12) As illustrated in FIG. 3, when each sucking disc unit 3 does not draw the wall 5 stably, the first color of the movable element 43 of each display unit 4 is pushed by the resilient element 42 to move below the window 411, hence the first color (i.e. the red) of the movable element 43 is visible through the window 411 so as to denote each sucking disc unit 3 draws the wall 5 insecurely.

(13) When each display unit 4 denotes each sucking disc unit 3 draws the wall 5 unstably, the first color (i.e. the red) of the movable element 43 is visible through the window 411 of each display unit 4 so as to warn users that a suction force of each sucking disc unit 3 reduces, thus obtaining using safety of the safety handrail.

(14) Thereby, the safety handrail of the present invention has advantages as follows:

(15) 1. Each display unit 4 includes the accommodation chamber, the resilient element, and the movable element, so the safety handrail is simplified and is assembled quickly to lower fabrication cost.

(16) 2. When each sucking disc unit draws the wall unstably, the first color (i.e. the red) of the movable element is visible through the window of each display unit so as to warn the users that the suction force of each sucking disc unit reduces, thus obtaining the using safety of the safety handrail.

(17) 3. Structural features and technology of each display unit of the safety handrail are new and patentable over prior arts.

(18) 4. The movable element of each display unit is movable to indicate the suction force of each sucking disc unit accurately, therefore the safety handrail is in inventive step.