JP2786753B2 - Safety device for man conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a man conveyor such as an escalator and a moving sidewalk.

[0003]

2. Description of the Related Art Conventionally, for example, escalators use a skirt guard switch shown in FIGS.

In FIG. 6, an escalator includes a handrail belt H attached to a peripheral portion of a balustrade B via a guide rail.
The step S that moves in synchronization with the step S is provided endlessly, and is driven by a driving device (not shown).

[0005] skirt guard 3 at a small gap in the left and right ends of the footstep S is mounted to the mounting member 2 provided in the main body.

[0006] Generally, in the escalator, in the upper and lower floor entry / exit sections, shoes and foreign matter are likely to be trapped between the left and right skirt guards in the process of the plurality of steps S being inclined from horizontal and from the inclined to horizontal. A skirt guard switch is provided on the back side of the skirt guard 3 in this portion, and the deflection displacement and the elasticity of the skirt guard 3 are set according to the expected detection value. A safety device is provided, such as a warning device that detects an abnormality.

More specifically, as shown in FIG. 5, the upper part of the skirt guard 3 is sandwiched by screws 5 and the lower part of the skirt guard 3 is sandwiched between members 2 and 2 previously attached to the escalator body frame. It is fixed tightly to prevent it from slipping.

On the other hand, the steps 1 and the skirt guard 3
Is about 2 to 5 mm , and the gap g between the skirt guard 3 and the cart guard switch 7 is 0 to 0.5 mm.
Provided to the extent.

In this manner, the skirt guard switch 7 has the tip of the detection pin 9 connected to the back of the skirt guard 3.
With a predetermined gap g between and is supported by the switch support 10 via the compression coil spring 12, and the microswitch 13 to the rear of the detection pin 9 is configured by fixing the horizontal portion of the switch support 10. The switch support 10 is fixed to a mounting member 14 provided on the main body via an adjustment shim 14a.

On the other hand, the inner ledge 4 is mounted on the mounting member 2 with screws 6 so as to press the skirt guard 3, and forms a balustrade.

When foreign matter enters the gap between the step 1 and the skirt gart 3 by the skirt guard switch 7 having the above-described configuration, the skirt guard 3 is pushed outward, and the size of the spread is defined by the skirt guard 3 and the detection pin 9. When the predetermined interval g disappears, the detection pin 9 moves backward, and the micro switch 13 is operated to detect a foreign substance.

The mounting position of the skirt guard switch 7 is as follows.
In general, depending on the type of escalator and the floor height,
In many cases, it is attached to several places on the upper and lower floors.

[0013]

However, in the above configuration, the deflection characteristic of the skirt guard 3 depends on the rigidity of the mounting member 2, and a detection accuracy error is likely to occur when a foreign object is caught.

[0014] The skirt guard switch configuration, to improve the adjustment accuracy, the adjustment unit is also increased in complex and space manner and extends the skirt guard back side
There is a problem .

Further, since safety measures for the skirt guard have not been taken over the entire escalator stroke, if the skirt guard detector is to be arranged at the center except for the curved section on the upper and lower floors, the skirt guard and the mounting member 2 must be provided. There is a problem that the deflection characteristics are different from those of the upper and lower floors, and the detection accuracy of the detector cannot be equalized.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a skirt guard switch for a man-conveyor that can be mounted at any position and obtain the same detection characteristics, the detection accuracy of the skirt guard switch, the simplification of the adjustment method of the switch, and the like. .

[Structure of the Invention]

[0018]

SUMMARY OF THE INVENTION The present invention relates to a safety device for a man-conveyor comprising a skirt gart provided on a side of a step and a means for detecting that a foreign object has entered a gap between the skirt garts. Multiple penetrations at predetermined intervals in the longitudinal direction
Skirt guard with adjustment holes and this skirt
A mounting member parallel laid substantially continuously and the guard, this
Fixed between the mounting material and the skirt guard,
It has an inverted U-shape that is open,
Parallel to the plane of the card and the position of the opening is in the adjustment hole.
An elastic member provided so as to correspond to the elastic member,
Of the skirt gart
Before opening and closing a switch that performs opening and closing operations by deforming the opening in response to the displacement, and before adjusting the operating position of the opening and closing operation of the switch.
Provided from the step side through the adjustment hole.
And adjusting means by screwing .

[0019]

According to the above construction, when foreign matter enters the gap between the steps and the skirt guard, the skirt guard is pushed and the U-shaped elastic member opened downward is deformed. In this process, the switch installed in the opening of the elastic member
H is a preset skirt guard displacement operation setting
Since the operation when you're on the value, and the steps and the skirt guard
Abnormal gap between the module is detected.

[0020] Here, when adjusting the upper kiss aptitude becomes set value operating position of the switch, the present invention is adjustment means, via the adjustment hole formed in the skirt guard, easily by screwing operation from the step side Can be implemented .

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the present invention is applied to an escalator will be described with reference to the drawings. As shown in FIGS. 1 to 3, the mounting member 2 supported by the escalator main body is laid almost continuously from the lower floor terminal to the upper floor terminal, which is the mounting range of the skirt guard 3, and an inner ledge forming a balustrade. Similarly, 4 is installed almost over the entire length of the balustrade.

Of course, the skirt guard 3 is also tightly stretched slightly beyond the moving range of the step 1 with a gap G in the range of 2 to 5 mm near the left and right side surfaces of the step.

The skirt guard 3 is a steel plate (stainless steel or the like) itself or a member having a low friction material applied to its surface, which is relatively thin, has moderate rigidity, and allows an appropriate amount of deflection when pushed from the step side. Is used.

Therefore, from the lower floor terminal to the upper floor terminal
Mounting material 2 and skirt gas continuously attached to
Between the upper and middle escalators, and below the escalator.
The position required by those intervals, U-shape opened downward
The elastic body 15 is fixed with screws 16 and the skirt guard
3 is in contact with the stepped difference portion 15a and the elastic body 15 and the pedestal
Then, it was configured to be fixed to the elastic body 15 with the screw 5.

[0025] Here, the elastic member 15 is made of resin having electrical insulation properties, in addition to being formed in the inverted U-shaped opening downward, the grooves 17a and the electrical contact piece 18 mounting the electrical contacts 17 on the opening face mounting Keru groove 18a is provided.

The groove 18 in which the electric contact piece 18 is mounted
have a gap coordinator 22 comprising electrical contact piece 18 electric contact 17 surface mounted through the g1 in the portion that engages the a
It is held in.

[0027] The coordinator 22 together is provided in a position seen through the step 1 side forms a position substantially concentric with the adjustment hole 3 b provided in the skirt guard 3, an electrically insulating portion to prevent electric shock operating side head consists of a single piece having a 22a, in FIG. 3
As shown in an enlarged manner, a contact 22b having a small electric resistance is attached to the other end. Then, a screw portion is provided on the outer peripheral portion of the cylindrical portion of the electric conductor portion 22c of the adjuster 22, and is screwed into the elastic body 15 and conducts with the electric contact piece 18,
In this part, the adjuster 22 is vibrated in a normal use state .
To deter from rotating I, a spring-loaded rotation preventing mechanism is applied.

When the skirt guard 3 is pushed, the elastic body 15 needs to appropriately obtain elastic deformation by the acting force. Therefore, the size of the section of the inverted U-shaped skirt guard side and the spring constant Are set in consideration of the material, plate thickness, width, and arrangement pitch of the elastic body 15.

The skirt guard switch having the above configuration is provided with a lead wire 19 on the electric contact 17 and the electric contact piece 18 to be incorporated into the escalator main body control circuit, and is connected to a wiring 20 from the control device by a connector 21. Connected by the connector 21 and the wiring 20
The result is held in the clamp 22.

However, the skirt guard switch of the present invention is provided between the mounting member 2 and the skirt guard 3 to save space, and the detection accuracy is such that the skirt guard switch is provided at the attachment portion of the skirt guard 3. The acting force received from the skirt guard 3 is immediately transmitted to the elastic body 15 and starts to be deformed. When the amount of deformation reaches a predetermined value, the electric contact 17 and the contact 22b of the adjuster 22 come into contact with each other. 2, it is possible to perform highly accurate detection.

The contact adjustment of the skirt guard switch 3 is performed by removing the inner ledge 4 and turning the adjuster 22 by a tool such as a screwdriver with a tool such as a screwdriver with the adjustment hole 3b while the skirt guard 3 is attached from the step 1 side. Adjust to the desired value.

When the gap G is widened between the steps 1 and the skirt guard 3 due to foreign matter, the bending deformation of the skirt guard 3 and the deformation of the elastic body 15 in the direction of narrowing the inverted U-shaped opening are synthesized. Appear.

Therefore, the spring constants of the skirt guard 3 and the elastic body 15 are appropriately set and detected depending on the detection method and characteristics.

Although the embodiment of the normally open contact type skirt guard switch has been described above, as another embodiment of the present invention, as shown in FIG. 4, an elastic body 23 made of synthetic resin or the like having electrical insulation is used. Reverse U as in the previous embodiment
A groove-like opening 23a that opens downward in a letter shape is provided, and a contact 25 made of a conductive material is attached to the opening 23a as shown in the figure. The contact 25 is fitted to the rear side of the opening 23a, terminal contact projecting downward 25 Ri elastic material Tona with spring action, the contact portion 2 6 of the other contact element 24
During composed of normally closed contacts which was contact switching portion.

Further, an adjuster 27 made of an insulator for adjusting the opening / closing of the contact is screwed so as to be orthogonal to the projecting portion of the elastic body 23b, and the adjusting hole 3b is fitted to the mounting position of the adjuster 27. There is a hole.

The above-mentioned electric contacts are provided with lead wires for the contacts 24 and 25 and are incorporated in the control circuit of the escalator body.

Even with this configuration, the same operation as in the previous embodiment can be obtained.

[0038]

According to the present invention, the structure of the skirt guard switch is small and simple, and the skirt guard switch can be mounted on the escalator.
It can be installed at any position below. Also,
Since the adjustment of the operating point of the switch can be performed with the skirt guard attached from the step side, the adjustment work can be facilitated and ensured not only at the time of installing the escalator but also at the time of maintenance.

Further, by using a detection switch accompanying the deformation of the elastic body, the detection accuracy is improved, and the reliability is improved as a whole.

[Brief description of the drawings]

FIG. 1 is a sectional view of a skirt guard switch according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a partial detailed view of FIG. 1;

FIG. 4 is a sectional view of another embodiment of the present invention.

FIG. 5 is a sectional view of a conventional skirt guard switch.

FIG. 6 is a side view of a skirt guard portion of the escalator.

[Description of Signs] 1 ... Steps 2 ... Mounting material 3 ... Skirt guard 7 ... Skirt guard switch 15 ... Elastic body 17 ... Electrical contact 22 ... Adjuster 22b ... Contact

Claims (1)

(57) [Claims] 1. A skirt gart is provided on a side of a step,
In a safety device for a conveyer provided with a means for detecting that a foreign substance has entered a gap in the space, a plurality of through-holes for adjustment are formed at predetermined intervals in a longitudinal direction.
A skirt guard which, with the skirt guard and parallel to the mounting member laid substantially continuously, is fixed between the skirt guard and the mounting member, the lower
It has an inverted U-shape that opens to the side, and the opening
The position of the opening is parallel to the surface of
An elastic member provided so as to correspond to the holes, incorporated into the opening in the elastic member, the scan
Opening and closing by deformation of opening in response to cart gart displacement
A switch for operation, for the adjustment to adjust the operating position of the opening and closing operation of the switch
Screw-in provided to perform from the step side through a hole
A safety device for a man-conveyor, comprising an adjusting means by means of an operator.