JPH0289796A - Man conveyor - Google Patents

Abstract

PURPOSE:To surely detect the breakage of a glass panel by providing a detecting means right under a cutout portion provided on a part of a joint member for interposingly supporting the glass panel and providing the operating/ detecting rod of a safety switch by this detecting means being energized by a spring to the bottom end face of the glass panel. CONSTITUTION:The breakage of a glass panel 8 made of a tempered glass having a property of being smashed to fragments at the time of breakage is detected by an operating/detecting rod 19 placed right under the cutout portions 16a, 17a of joint members 16, 17 interposingly holding the glass panel 8 from both sides. This operating/detecting rod 19 is floated upward by the resilience of a coil spring 20 to operate a safety switch 21 with a part of the operating/ detecting rod 19, rapidly stopping the drive of a man conveyor interlocked therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a passenger conveyor such as an escalator or a walkway, and particularly to a safety device for this passenger conveyor.

(Prior Art) A safety device for this type of passenger conveyor that has already been proposed is constructed as shown in FIGS. 3 and 4.

That is, in FIGS. 3 and 4, a well-known movable staircase 2 is wound around each sprocket (not shown) inside a truss body 1 of an escalator installed at an angle on each floor of a building. It is attached to a drive chain and transported, and on both sides of this moving staircase 2, there are machine frames 3.
is provided. Also, on both sides of the upper part of this machine frame 3,
The inner deck board 4 and the outer deck board 5 are the support frame 6
A glass panel 8 is installed between the inner deck board 4 and the outer deck board 5 so as to be sandwiched between base members 7a and 7b. A handrail deck 9 is fixed to the upper part 8a of the glass panel 8 with a cushioning material 10 interposed therebetween. Further, a guide rail 11 is attached to the upper part of the handrail deck 9, and a handrail belt 12 is wound around the guide rail 11 so as to be transported in synchronization with the moving staircase 2. . Furthermore, a detection device 13 is installed on the support frame 6 located below the lower part 8b of the glass panel 8, and this detection device 13 includes a switch 15 attached to a holder 14. The operating piece 15a is provided so as to come into contact with the side surface of the glass panel 8.

Therefore, the above-mentioned safety device in the passenger conveyor is such that when the glass panel 8 is damaged for some reason, the detection device 13 activates the actuating piece 15a of the switch 15.
detects damage to the glass panel 8 and activates the switch 15 to immediately stop the escalator operation for the safety of passengers.

In addition, the above-mentioned safety devices for passenger conveyors include, for example, the safety devices for escalators and the like (Utility Model Publication No. 51-41747), which was previously filed and announced by the present applicant.
There are also configurations similar to this.

(Problem to be Solved by the Invention) However, although the above-mentioned safety device in the passenger conveyor operates effectively in theory, in reality, the glass panel 8 is connected to each joint part 7a.

Due to the fact that it is installed so that it is sandwiched by 7b,
Even if the glass panel 8 is broken, the broken pieces may be held between the joint members 7a and 7b, and the switch 1 detected by the detection device 13
Since there are pieces of the actuating piece 15a of No. 5 still being held, there is a risk that breakage of the glass panel 8 will not be detected, making it difficult to operate reliably as a safety device in a passenger conveyor.

The present invention has been made in view of the above-mentioned circumstances, and takes advantage of the property of tempered glass to break into fine particles, and the glass panel is mounted so as to be sandwiched between joint members. A detection means is provided directly below each notch other than the above, and a detection rod for detecting the activation of a safety switch by this detection means is biased against the lower end surface of the glass panel by a spring, and the glass panel made of reinforced glass material is damaged due to some reason. Then, the broken pieces are scattered around regardless of the joint members, and the detection lever of the safety switch by the detection means reliably detects the breakage of the glass panel and stops the operation. The purpose is to provide a man conveyor with a

[Structure of the invention]

(Means for Solving the Problems and Their Effects) The present invention provides a handrail deck equipped with a guide rail on the top of a glass panel, and a handrail belt is wound around this guide rail. Each joint member is provided between the inner deck board and the outer deck board so that a glass panel made of reinforced glass material is sandwiched between the joint members, and each joint member is provided with vertical notches in a part thereof relative to the glass panel. a bracket is formed with a gap therebetween, and a bracket is attached to the support frame directly below the glass panel where each of the notches is located;
An operation detection rod is provided on this bracket with a spring biased so as to contact the lower end surface of the glass panel, and a safety switch is attached on the operation path of this operation detection rod. When the glass panel is damaged, the broken pieces are scattered around regardless of the joint members, using the tempered glass's ability to shatter into fine particles, and the detection lever of the safety switch ensures that the glass panel is not damaged. It is designed to be detected.

(Example) Hereinafter, the present invention will be described with reference to an illustrated embodiment.

Note that the present invention includes the same constituent members as those in the above-mentioned specific example.
The same reference numerals will be used for explanation.

In FIGS. 1 to 3, reference numeral 1 denotes a truss body of an escalator installed at an angle on each floor of a building.
is attached to a drive chain wrapped around each sprocket (not shown) and transported, and a machine frame 3 is provided on both sides of the movable staircase 2. Further, on both sides of the upper part of the machine frame 3, an inner deck board 4 and an outer deck board 5 are provided so as to cover the support frame 6, and between the inner deck board 4 and the outer deck board 5, there is a reinforced glass. A glass panel 8 made of material is attached so as to be sandwiched between joint members 16 and 17, and a handrail deck 9 is fixed to the upper part 8a of the glass panel 8 via a cushioning material 10. Further, a guide rail 11 is attached to the upper part of the handrail deck 9, and a handrail belt 12 is attached to this guide rail 11.
is wound so as to be transported in synchronization with the moving stairs 2.

On the other hand, notches 16a and 17a are formed in a part of each of the joint members 16 and 17 with gaps C between them and the glass panel 8 made of a reinforced glass material. , 17a are located on the support frame 6 directly below the glass panel 8. A bracket 18 is attached to the support frame 6 directly below the glass panel 8. Further, an abbreviated-shaped operation detection rod 19 is provided on this bracket 18 and is biased by the elasticity of a coil spring 20 so as to come into contact with the lower end surface 8C of the glass panel 8. A safety switch 21 is attached to the bracket 18 on the operating passage 19.

Therefore, for some reason, the glass panel 8
If the glass panel 8 is broken, this glass panel 8 will be scattered around by taking advantage of the property of tempered glass to break into fine particles.
The detection actuation rod 19 reliably detects damage to the glass panel 8, and furthermore, the detection actuation rod 19 is activated by the coil spring 2.
It floats upward due to the elastic force of 0, and a part of this detection operating rod 19 operates the safety switch 21, and the driving of the passenger conveyor linked therewith is immediately stopped.

〔Effect of the invention〕

As described above, according to the present invention, when a glass panel made of tempered glass material is damaged for some reason, the broken pieces are spread around the surrounding area by utilizing the property of tempered glass to break into fine particles, regardless of each joint member. It is possible to reliably detect damage to the glass panel by using the detection lever of the safety switch using the detection device.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of the passenger conveyor of the present invention;
FIG. 2 is a slope view showing a part of the joint member incorporated in the present invention, FIG. 3 is a side view showing a part of an escalator that has already been proposed, and FIG. 4 is a chain line in FIG. 3. It is an enlarged sectional view along AA. 4...Inner deck board, 5...Outer deck board, 6...Support frame, 8...Glass panel, 9...Handrail deck, 11...Guide rail, 16.17...
Joint member, 16a, 17a...notch, 18...bracket, 19...operation detection rod, 21...safety switch. Applicant's agent Mr. Sato

Claims (1)

[Claims] A handrail deck with a guide rail is provided on the top of the glass panel, and each joint member is installed between the inner deck board and the outer deck board, which are integral with the machine frame, in a passenger conveyor in which a handrail belt is wrapped around the guide rail. A glass panel made of reinforced glass material is provided so as to be sandwiched therebetween, and vertical notches are formed in a part of each joint member with gaps between them relative to the glass panel, and the position of each notch is determined. A bracket is attached to the support frame directly below the glass panel, and an operation detection rod is attached to this bracket with a spring biased so as to come into contact with the lower end surface of the glass panel. A passenger conveyor characterized by being equipped with a switch.