JPH0597373A - Safety device for man conveyor - Google Patents

Abstract

PURPOSE:To secure the safety of a passenger by preventing the formation of unevenness in the vicinity of a hole on the surface of the skirt guard of a man conveyor. CONSTITUTION:The most spread diameter part 62c superposed to the surface of a guide seat 69 is formed at the head part 62b of an adjusting screw element 62A for adjusting the gap between the operating piece 63 of a safety device 6 and the operating element 67 of a switch 68, and a stop ring 65 superposed an the reverse surface of the guide seat 69 is fitted. Then, the gap between the operating piece 63 and the operating element 67 is adjusted by shifting the operating piece 63 on the basis of the revolution of the adjusting screw element 62A free from advance and retreat.

Description

Detailed Description of the Invention

[0001]

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 or a travator, and more specifically,
The present invention relates to improvement of a safety device necessary for adjusting the operating point of a safety switch.

[0002]

2. Description of the Related Art FIGS.
FIG. 1 shows a conventional safety device for a man conveyor shown in Japanese Patent Publication No. 1-55196 and Japanese Patent Publication No. 1-55196, in which 1 is a main frame of a man conveyor composed of an escalator, and the main frame 1 is shown in FIG.
As shown in FIG. 2, a plurality of steps 2 that circulate and move in an endless manner are arranged in an inner longitudinal direction, and balustrades 4 that guide endless moving handrails 3 that circulate are erected on both sides thereof. In the lower part of the balustrade 4, a skirt guard 5 whose surface is opposed to the side of the step 2 with a gap is provided in a hanging manner. Further, inside the main frame 1, there is provided a safety device 6 for stopping the passenger conveyor when the shoes of passengers are caught between the steps 2 and the skirt guard 5.

As shown in FIGS. 4 and 5, the safety device 6 has a circular hole 60 penetrating through the flexible skirt guard 5 and a hole 60 welded to the back surface of the skirt guard 5. Fixed nut 61 centered on the center
And a substantially round bar-shaped adjustment screw 62 screwed into the fixing nut 61, and the folded back top is welded to the back surface of the skirt guard 5 and positioned above the adjustment screw 62, and is bent downward from the top. And the oriented lower part of the adjustment screw 62 is threaded through the end of the adjustment screw 62, a pair of washers 64 screwed into the end of the adjustment screw 62 to hold the operation piece 63, and the adjustment screw 62. Snap ring 6 that is fitted to the end of the
5 and a switch bracket 66 that is attached to the inner side of the main frame 1 and has its tip oriented horizontally on the back surface of the skirt guard 5.
The switch bracket 66 is provided with a switch 68 that is screwed and mounted on the tip of the switch bracket 66, and a switch 68 that operates in accordance with the contact of the operator 67 and the operator 67 to stop the passenger conveyor. As a measure to prevent the adjustment screw 62 from loosening, as shown in FIG. 6, the coil spring 7 fitted in the adjustment screw 62 is inserted.
May be interposed between the fixed nut 61 and the washer 64, or a locking nut (not shown) such as a U nut may be used as the fixed nut 61.

Therefore, the shoes of the passengers riding on the moving step 2 are erroneously detected, and the side portion of the step 2 and the skirt guard 5 are mistaken.
When sandwiched between the skirt guard 5 and the skirt guard 5, the operating piece 63 is displaced in the same direction and the operating piece 63 is displaced in the same direction.
8 operates to stop the passenger conveyor in an emergency, ensuring the safety of passengers. However, the adjustment of the clearance between the operating piece 63 and the actuator 67 of the safety device 6, in other words, the adjustment of the operating point of the safety device 6 has a very important meaning.

Therefore, conventionally, the operating point of the safety device 6 is adjusted as follows. That is, the operating piece 6
When it is desired to increase the gap between the actuator 3 and the actuator 67, as shown in FIG. 4, the tip of a tool (not shown) inserted into the hole 60 is directed to the groove 62a on the surface of the adjusting screw 62 and the tool is rotated in one direction. .. Then, the adjusting screw 62 rotationally moves in the step 2 direction to displace the operating piece 63 in the step 2 direction, and a large gap between the operating piece 63 and the operating element 67 is secured. On the contrary, when it is desired to reduce the gap between the operating piece 63 and the operating element 67, as shown in FIG. 5, the tip of the tool inserted in the hole 60 is directed to the groove 62a of the adjusting screw 62 and the tool is rotated in the other direction. ..
Then, the adjusting screw 62 rotates in the direction of the switch bracket 66 to displace the actuating piece 63 in proximity to the actuating element 67, and a small gap is secured between the actuating piece 63 and the actuating element 67. However, during this adjusting operation, the adjusting screw 62 moves forward and backward orthogonally to the skirt guard 5 to form a convex portion or a concave portion near the hole 60, as shown in FIGS.

[0006]

The conventional safety device for a passenger conveyor is constructed as described above, and the adjustment screw 62 projects from the skirt guard 5 to form a convex portion when adjusting the operating point of the safety device 6 (see FIG. 4). Refer to) or adjust screw 6
2 may be recessed in the fixing nut 61 to form a concave portion (see FIG. 5), and therefore irregularities may occur near the hole 60, and passengers' shoes or the like may be caught in the irregularities, resulting in personal injury or the like. .. Therefore, conventionally, as shown in FIG. 6, the closing plate 8 is overlapped with the hole 60. However, even if the closing plate 8 is overlapped with the skirt guard 5, the skirt guard 5 still has a convex portion. was there.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a safety device for a passenger conveyor which can facilitate passenger safety and adjustment of operating points.

[0008]

In the present invention, in order to achieve the above-mentioned object, steps which are arranged in the inner longitudinal direction of the main frame of the passenger conveyor and circulate and hang down to the balustrade lower part on the side of the main frame. Skirt guards that are continuously connected to each other on the side of the step with a gap, a hole drilled in this skirt guard, a guide seat that is fixed to the back of the skirt guard and that is flush with the hole, a hole and a guide. An adjusting screw that is inserted into the seat and overlaps with the largest diameter portion of the head on the guide seat, and is rotated from the skirt guard surface; and a retaining ring that is fitted to the head of the adjusting screw and overlaps with the guide seat. , The operating part with the top attached to the back of the skirt guard and the free lower part passing through the adjusting screw, the fixing nut fixed to the free lower part of the operating piece and screwed into the adjusting screw, and the side part inside the main frame. The work piece and the work piece that are installed when the skirt guard is flexed. A switch for stopping the man-conveyor upon contact with the child, and further, displacing the operating piece based on the rotation of the adjusting screw that does not move forward and backward, and the gap between the operating piece and the operating element of the switch facing each other. It is characterized by adjusting.

[0009]

According to the present invention, the gap between the operating piece and the operating element of the switch, which face each other, is adjusted by rotating the adjusting screw without advancing and retreating, so that there is no unevenness in the vicinity of the hole. , The safety of passengers can be secured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 and 2. In the drawings, 6 is a safety device, and this safety device 6 is flexible as shown in FIGS. Hole 60 penetrating through the skirt guard 5 having flexibility, a ring-shaped guide seat 69 welded to the back surface of the skirt guard 5 and centered at the center of the hole 60, An adjusting screw 62A in which a head 62b that is movably inserted and has a diameter larger than that of the screw rod is formed in a step, and a head 62 of the adjusting screw 62A.
The largest expanded diameter portion 69 provided on b and overlapping with the surface of the guide seat 69
c, the retaining ring 65 fitted to the head 62b of the adjusting screw 62A and superposed on the back surface of the guide seat 69, and the folded back top is welded to the back surface of the skirt guard 5 to adjust screw 62.
An operating piece 6 located above A and having a free lower portion bent downward from the top and directed toward the end of the adjusting screw 62A.
3 and the adjusting screw 6 which is welded to the lower free portion of the actuator 63.
2A, a fixed nut 61, a switch bracket 66 attached to the inner portion of the main frame 1 and having its tip oriented horizontally on the back surface of the skirt guard 5, and the switch bracket 6
6 is provided with a switch 68 which is mounted on the tip of the screw 6 and which is screwed on and faces each other, and a switch 68 which operates when the operator 67 abuts to stop the man conveyor.

As a countermeasure against loosening of the adjusting screw 62A, a loosening preventing nut (not shown) such as a coil spring 7 or a U nut may be used in substantially the same manner as in FIG.

Other parts are the same as in the conventional example.

Therefore, when it is desired to adjust the operating point of the safety device 6, it may be performed as shown in FIG. 1 or 2.
That is, when it is desired to increase the gap between the operating piece 63 and the operating element 67, as shown in FIG. 1, the tip of a tool (not shown) inserted into the hole 60 is provided with a groove 6 on the surface of the maximum expanded diameter portion 62c of the adjusting screw 62A.
2a and turn the tool in one direction. Then, the adjusting screw 62A rotates in the same direction to displace the operating piece 63 provided with the fixing nut 61 in the step 2 direction, thereby moving the operating piece 63.
And a large gap between the actuator 67 is secured. At this time, the retaining ring 65 abuts and overlaps with the back surface of the guide seat 69 to adjust the screw 62.
Since the movement of A is restricted, the rotating adjustment screw 62A does not move in the left-right direction in FIG. 1 and prevents the adjustment screw 62A from protruding from the skirt guard 5 and forming a convex portion near the hole 60. be able to.

On the contrary, when it is desired to reduce the gap between the operating piece 63 and the operating element 67, as shown in FIG. 2, the tip of the tool inserted in the hole 60 is directed to the groove 62a on the surface of the maximum expanded diameter portion 62c of the adjusting screw 62A. Do it and turn the tool in the other direction. Then,
The adjusting screw 62A rotates in the same direction to move the operating piece 63 provided with the fixing nut 61 closely to the operating element 67,
A small gap between the operating piece 63 and the operating element 67 is ensured. At this time, the surface of the largest expanded diameter portion 62c contacts and superposes on the surface of the guide seat 69 to limit the movement of the adjusting screw 62A, so that the rotating adjusting screw 62A does not move in the left-right direction in FIG. It is possible to reliably prevent the adjustment screw 62A from being retracted and forming a recess near the hole 60.

[0015]

As described above, according to the present invention, the operating piece is displaced based on the rotation of the adjusting screw that does not move back and forth to adjust the gap between the operating piece and the operating element of the switch which face each other. As a result, it is possible to surely prevent irregularities from being generated in the vicinity of the hole of the skirt guard, to ensure the safety of passengers, and to significantly facilitate the work of adjusting the operating point of the safety device. ..

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing an example of a safety device for a passenger conveyor according to the present invention.

FIG. 2 is an explanatory sectional view showing an embodiment of a safety device for a passenger conveyor according to the present invention.

FIG. 3 is a sectional side view showing the vicinity of the lower floor of a conventional passenger conveyor.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an explanatory sectional view showing a conventional safety device for a passenger conveyor.

FIG. 6 is a cross-sectional explanatory view showing a conventional safety device for a passenger conveyor to which improvement means is added.

[Explanation of symbols]

 1 Main Frame 2 Steps 4 Railings 5 Skirt Guard 6 Safety Device 60 Holes 61 Fixing Nuts 62, 62A Adjusting Screws 62b Head 62c Maximum Expanded Area 63 Actuating Pieces 65 Stopper 67 Actuator 68 Switch 69 Guide Seat

Claims (1)

[Claims] 1. A step, which is arranged in a longitudinal direction inside a main frame of a man conveyor and circulates, and a step pendant to a lower part of a balustrade on a side part of the main frame, and a surface is opposed to a side part of the step with a gap. The skirt guard, the hole drilled in the skirt guard, the guide seat fixed to the back of the skirt guard and aligned with the hole, and the hole and the guide seat that are inserted into the guide seat and have the largest diameter part of the head. The adjustment screw that overlaps and is rotated from the skirt guard surface, the retaining ring that is fitted on the head of this adjustment screw and overlaps the guide seat, and the top is attached to the back of the skirt guard and the free lower part is the adjustment screw. An operating piece that is penetrated through, a fixing nut that is fixed to the lower free portion of the operating piece and that is screwed into an adjusting screw, and an operating piece and an operating element that are arranged on the side of the main frame and that accompany flexing of the skirt guard. Equipped with a switch that stops the passenger conveyor based on the contact of A safety device for a man conveyor, wherein the actuating piece is displaced based on the rotation of the adjusting screw that does not move back and forth to adjust the gap between the actuating piece and the operator of the switch that face each other.