JPS5834395B2 - Sensor for elevator door safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sensor for a safety device for a novelty door.

Figs. 1 to 4 show the interception of the sensing body of a conventional elevator door safety device of this type.

That is, in these FIGS. 1 to 4, the elevator heel 1 has an entrance 2 with a rail 3 disposed above.
A door 4 for opening and closing the entrance/exit 2 is suspended from the rail 3 by an upper hanger 5, and the lower guide pieces 6, 6 are inserted into a guide groove 8 formed in the floor 7, as shown in the figure. The door can be opened and closed using the omitted door opening/closing mechanism.

Furthermore, a door safety device 9 is installed at the opening/closing edge of the group 4, and detects the presence or absence of obstacles such as passengers passing through the doorway 2 by a change in capacitance.
The sensing body 10 is pivotally supported at the end of the door 4 by an upper link assembly 20 and a lower link assembly 30 that intersect parallel links so as to be swingable back and forth.

As is clear from FIGS. 2 to 4, the sensing body 10 is
The side walls 11a, 11b have a length equal to the edge length of the door 4.
A covering member 11 made of a non-metal such as synthetic resin and having a U-shaped cross section and having a base wall 11c, side walls 12a, 12b and a base wall 12c having the same length as the covering member 11. Core member 12 made of metal with a U-shaped cross section
Similarly, the core member 1 has the same length as the covering member 11.
Each insulating block 14a to 14e is installed on the inner surface of the base wall 12c of No. 2.
The antenna plate 13 attached via the antenna plate 13 and the core member 12
are fixed back to back by welding etc., and the side wall 15a
, 15b and a base wall 15c.
1 side wall 11a.

11b, each side wall 12a, 12b and 15a, 15 of the integrated core member 12 and coupling member 15
The outer surface of b is inserted, and the distal edges 12d and 12e are abutted against the inner surface of the base wall 11c to combine them, and the covering member 11 and the connecting member 15 are connected between each side end with a countersunk screw,
The antenna plate 13 is fastened to the base wall 11c of the covering member 11 with a slight spacing therebetween.

The upper and lower link assemblies 20.30 also have bolts 22a, 22b and 32a, 32 attached to the door 4, respectively.
Upper and lower seats 21.31 fitted with b, 32c
, and pins 23 are attached to these upper and lower seats 21 and 31.
．． One end of the upper and lower links 24.34 pivoted at 33 are introduced inside the side walls 15a, 15b of the coupling member 15 and pivoted by pins 17.18, and furthermore, an extension of the lower link 34 Place the other end of the
The switch 36 is brought into contact with a stopper 35 on the top of the stopper 1, and a switch 36 is activated at the time of contact.

In the conventional configuration, the range 40 in which an obstacle can be detected due to a change in the capacitance of the antenna plate 13 is located on both sides of the tip edge 12d of the core member 12.

Since 12e protrudes, the width direction approximately corresponds to the width of the covering member 11, and the length direction of the tip is about 60 mm.

Therefore, if an obstacle such as a passenger enters the detectable range 40 while the door 4 is closing, the capacitance of the antenna plate 13 changes and is detected by the door opening/closing control device (not shown). The door is controlled to stop or open to prevent passengers from getting caught in the door, and even if the sensor 10 malfunctions, an obstacle such as a passenger will be blocked by the sensor 10. When touched, the differential relative to the door 4 rotates the upper and lower links 24, 34 and activates the switch 36 for similar control.

Here, in the detection body of the conventional door safety device, as described above, the inner surfaces of the side walls 11a and 11b of the covering member 11 and the outer surfaces of the side walls 12a and 12b and 15a and 15b of the core member 12 and the coupling member 15 are Since the tip edges 12d and 12e of the core member 12 are in contact with the inner surface of the base wall 11c of the covering member 11 over the entire length, there may be a partial gap between the two due to machining error. When the door 4 is opened/closed, a chattering sound is generated in the gap, resulting in a decrease in quality.
, 12e, the detectable range 40
This had disadvantages such as the inability to expand the size.

The present invention aims to improve these conventional drawbacks, prevent the occurrence of chattering noise during opening/closing operations, and expand the detectable range of the antenna plate. The embodiment will be described in detail with reference to FIGS. 5 to 8.

5 to 7 show one embodiment of the present invention, and FIG. 8 shows an embodiment of the present invention.
The figures each show other embodiments, and in each of these figures, the same reference numerals as in FIGS. 1 to 4 represent the same or corresponding parts.

In the embodiment shown in FIGS. 5 to 7, the covering member 1
Step portions 11 d and 11 e are made to protrude from the inner surfaces of the respective side walls 11 a and 11 b of 1 and at positions away from the base wall 11 c, and as the core member 51 corresponding to the core member 12 , the core member 12 and Similarly, it has side walls 51 a and 51 b and a base wall 51 c having the same length as the covering member 11, and the tip edges 51 d and 51 e of the side walls 51 a and 51 b are connected to the stepped portion 11 d.

11e, and the tip edges 51d, 51e of the core member 51 are slightly bent inward at the stepped portions 11d, 11e of the covering member 11,
They are assembled by engaging with each other with vibration absorbing materials 19a and 19b interposed over the entire length.

That is, the vibration absorbing materials 19a and 19b are connected to the step portions 11d and 11e and the core member 51 over the same length as the covering member 11.
It is held between the leading edges 51d and 51e.

In this embodiment, instead of the engaging member 15, a support fitting 52 having side walls 52a, 52b and a base wall 52c with an interval smaller than the interval between the side walls 11a, 11b of the covering member 11, 11a.

A coupling fitting 53 having side walls 53a, 53b and a base wall 53c that match the inner surface of the support fitting 52 is provided.
Prepare two pieces and connect the upper and lower links 24.3.
4 are pivotally supported by pins 17 and 18 at predetermined positions on the core member 51, and a plurality of coupling fittings 53 are placed at predetermined positions on the concentric member 51 at appropriate intervals, back to back. The respective base portions 53c fix the base portions 51c of the core body 51 by pressing, and the respective side ends of the covering member 11 and the coupling fittings 53 are connected with countersunk screws, N6a to N16j.
It is tightened by this.

Further, on the inner surface of the base wall 51c of the core member 51, there are insulating blocks 54 corresponding to the insulating blocks 14a to 14e.
Through a to 54e, the tip edge 51d of the concentric member 51,
The antenna plate 55 is fixed in the same manner as described above at a position protruding from the base wall 11c of the covering member 11 and at a slight distance from the inner surface of the base wall 11c.

This antenna plate 55 has side walls 55a and 55b bent close to the tip edges 51d and 51e, and a base wall 55
c is attached to the insulating blocks 54a to 54e, and in this embodiment, since the tip edges 51d and 51e of the core member 51 are located behind the side walls 55a and ssb of the antenna plate 55, the detectable range 60 is smaller than that of the conventional one. Compared to that of
In particular, it will be greatly expanded in the width direction.

Here, in the embodiment, the core member 51 has side walls 51a,
Although the tip edges 51d and 51e of 51b are expanded, it is not necessary to expand them in this way.For example, as shown in FIG. Only the edges 51d and 51e are engaged with the covering member 11, and the respective side walls 11a, 11b and 51a, 51
It is sufficient to prevent the entire surface from contacting with b.

Also, as seen in this FIG. 8 embodiment, side walls 51a,
51b can be made asymmetrical with respect to each other, and the direction and size of the detectable range can be arbitrarily selected.

As detailed above, according to the present invention, the sensing body of the safety device, which is provided on the opening/closing edge of the elevator door so as to be swingable back and forth, is provided with a metal core member that insulates and supports the antenna plate;
A non-metallic covering member that covers the core member is used, and the distal edges of both side walls of the core member are engaged with stepped portions protruding from the inner surfaces of both side walls of the covering member through vibration absorbing materials. Therefore, when the door is opened, closed, and reversed, chatter noise will not be generated at the contact area between the covering member and the core member, and the tip edges of both side walls of the core member can be appropriately shifted from the antenna plate position. By doing so, the detectable range can be arbitrarily selected and set using this antenna plate, and the structure is simple and can be implemented easily and inexpensively.

[Brief explanation of the drawing]

Figure 1 is a front view showing an outline of a conventional elevator door safety device, Figure 2 is a front view showing the configuration of a sensor of the same device, and Figures 3 and 4 are lines 1-1 and 1 in Figure 2. %'-IV
5 is a front view showing the configuration of one embodiment of the sensing body according to the present invention, and FIGS.
The figures are cross-sectional views taken along lines VI-VI and ■-■ in FIG. 5, respectively, and FIG. 8 is a cross-sectional view corresponding to FIG. 7 according to another embodiment. Yu...basket, 2...doorway, 4...
...Door, l...Door safety device, 10...
Sensing body, 11... Covering member, 11a, 11b...
...Same side wall, 11c...Same base wall, 11d, 11
e... Same stage part, 20.30... Upper and lower link assembly, 51... Core member, 51a
. 51b... Same side wall, 51c... Same base wall, 51d. 51e... Same tip edge, 52... Support metal fitting, 52a. 52b... Same side wall, 52c... Same base wall, 53... Joining fittings, 53a, 53b...
...Same side wall, 53c...Same base wall, 54a-5
4e... Insulation block, 55... Antenna plate, 55a, 55b... Same side wall, 55c.
...Same base wall, 19a, 19b...Vibration absorbing material.

Claims (1)

[Claims] 1. In a safety device that is provided so as to be able to swing back and forth over the entire length of the opening/closing edge of a door, there is a metal core member having both side walls and a base wall, and an inner surface of the base wall of the metal core member via an insulating block. The antenna plate has an antenna plate attached to the antenna plate, and has both side walls and a base wall, and has a stepped portion formed protruding on the inner side of both side walls and at a position away from the inner side of the base wall, and has a length equivalent to that of the metal core member. The metal core member is housed in a space formed by both side walls of the non-metallic sheathing member with the inner surface of the base wall thereof facing the inner surface of the base wall of the non-metallic sheathing member. Further, the end edge of the side wall of the metal core member is engaged with the step portion over the entire length with a vibration absorbing material interposed therebetween, and the outer surface of both side walls of the metal core member and the inner surface of both side walls of the non-metallic covering member are connected to each other. A sensor for an elevator door safety device, characterized in that the sensor is configured in combination so as to form a completely non-contact state.