JP3633081B2 - Obstacle sensing device for opening and closing body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an obstacle detection device for an opening / closing body used as a safety mechanism for an opening / closing body attached to an opening of a building such as an electric shutter.
[0002]
[Prior art]
In the case of an electric shutter attached to the opening of a building, the slat curtain constituting the shutter descends from above to close the opening, but if there is an article or a person directly under the slat curtain, this article or There is a danger that a person becomes an obstacle and this obstacle is caught between the slat curtain and the floor surface, resulting in a damage accident.
[0003]
In order to prevent such an accident, an obstacle sensing device for a shutter as disclosed in Japanese Utility Model Publication No. 1-37111 has been devised.
This obstacle detection device moves up and down the inside (inside) of the opening to the bottom of the slat curtain. A movable bottom plate suspended freely and a microswitch disposed in the interior of the movable bottom plate are configured, and the floating of the movable bottom plate in contact with an obstacle is detected by the microswitch.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional obstacle detection device for a shutter, the configuration in which the movable bottom plate is movable up and down with respect to the decorative cover is configured such that the movable bottom plate advances and retreats in the inner space portion of the decorative cover having a substantially U-shaped cross section. Thus, a gap corresponding to the advancing / retreating distance of the movable bottom plate is exposed on the side surface between the opening edge portion of the decorative cover and the movable bottom plate. For this reason, when an obstacle sensing device having such a structure is used in a cold region, snow or the like may adhere to the gaps described above or may enter the gaps and freeze in the gaps. In such a case, the operation of the movable bottom plate may be caused, and there is a possibility that the sensing of the obstacle becomes uncertain.
[0005]
In addition to the above-mentioned snow, dust, sand, pebbles, etc. may enter the gaps in the above-mentioned obstacle sensing device even in a poorly installed location, causing the movable bottom plate to malfunction and detecting obstacles. There is a risk that the reliability of the system will be reduced.
[0006]
Therefore, in order to solve the above problems, the present invention is capable of detecting an obstacle even in a cold place or an installation place where the environment is bad, and can detect the obstacle and improve the reliability thereof. The purpose is to provide.
[0007]
[Means for Solving the Problems]
Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The obstacle detection device 1 for an opening / closing body according to the present invention serves as a moving end of an opening / closing body 4 disposed in a building opening 2, and extends in the width direction of the building opening 2 on an end surface facing the edge 6 of the building opening 2. The frame 5 is provided with a groove opening 10 through the entire length and the substrate 18 closes the groove opening 10 of the frame 5, and the sensing piece is provided so as to be movable forward and backward with respect to the groove opening 10. 17, a detection means 36 provided on the frame body 5 for detecting the movement of the sensing piece 17 when the sensing piece 17 enters the frame body 5, an outer surface of the frame body 5, A flexible cover member 40 disposed to connect the outer surface of the substrate 18 of the sensing piece 17 corresponding to the outer surface, and covering the gap between the frame 5 and the sensing piece 17; The engaging portions 41, 41 formed bulging on both edges along the longitudinal direction are framed. 5 and the cover member 40 which is inserted respectively formed grooves 14, 24 on the outer surface of the sensing strip 17, provided with, the closing plate 42 is provided on the end face of the longitudinal ends of the frame 5 The cover member 40 ′ is disposed on the lower edge of the closing plate 42 .
[0008]
In addition, the said cover member 40 is good also as a structure which consists of a member which has a stretching property .
[0009]
According to such a structure, the cover portion 40 having flexibility covers the gap portion, which is the movable portion between the frame 5 and the sensing piece 17, and snow or the like adheres to the gap portion. Snow or the like does not enter the gap, freezing does not occur in the gap, and the sensing piece 17 can move forward and backward with respect to the frame 5 without causing malfunction, and detects the obstacle X. It becomes possible.
[0010]
In addition, if an uneven surface is formed on the substrate bottom surface 18b of the sensing piece 17, the contact area with the edge (floor surface) 6 of the building opening 2 that faces and contacts the substrate 18 can be reduced. Accordingly, it is possible to prevent the sensing piece 17 and the edge 6 of the building opening 2 from being fixed due to freezing in a cold region, for example.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic front view of a shutter provided with an obstacle sensing device for an opening / closing body according to the present invention, and FIG. 2 is a side sectional view showing an embodiment of the obstacle sensing device.
[0012]
First, as shown in FIG. 1, the obstacle sensing device 1 for an opening / closing body is provided on an electric shutter 3 or the like disposed in an opening 2 of a building.
The electric shutter 3 is a lightweight shutter composed of a slat curtain 4 serving as an opening / closing body or a panel shutter (not shown) composed of a panel plate serving as an opening / closing body. The obstacle sensing device 1 of the present invention is disposed at the drainage portion.
[0013]
In the present embodiment, the obstacle sensing device 1 is generally composed of a frame 5, a sensing piece, an actuating piece, a detecting means, and a cover member.
[0014]
The frame 5 is the lowermost end of the slat curtain 4 and is a moving end for opening and closing the building opening 2, and the lower edge of the building opening 2, that is, the lower side of the slat curtain 4 facing the floor surface 6. At the end, it is provided through the longitudinal direction which is the width (left and right) direction of the building opening 2.
[0015]
As shown in FIG. 2, the frame 5 has an upper plate 8 in which engagement pieces 7 engaged with the slat curtain 4 are vertically extended, and extends in a drooping direction from both ends of the upper plate 8. It has a pair of side plates 9 and 9 that face each other, and is formed in a substantially U-shaped cross section in which a groove opening 10 is formed toward the lower side (floor surface 6).
[0016]
The groove opening 10 of the frame 5 has a pair of support strips 11 and 11 that narrow the opening width of the groove opening 10 from the vicinity of the lower ends of the side plates 9 and 9 that form both edges of the groove opening 10. 5 and a single unit.
[0017]
The pair of support strips 11, 11 extend inwardly with respect to the groove opening 10 of the frame body 5, and in the present embodiment, as shown in FIG. 2, integrally below the inner side surface of each side plate 9, 9. Each is provided through a stepped portion 12 having a substantially L-shaped cross section.
[0018]
Further, a narrow groove 13 that opens downward (floor surface 6) is formed between the lower ends of the side plates 9, 9 and each step portion 12.
[0019]
Further, on both outer side surfaces of the lower ends of the both side plates 9, 9, recessed grooves 14 formed so as to extend deeply are formed.
[0020]
In addition, a regulating piece 15 extending in the hanging direction is formed in a substantially central position on the inner surface 8a, which is the lower surface of the upper plate 8 of the frame body 5, and the inner side of one side plate 9 (right side in FIG. 2). A receiving piece 16 having a substantially L-shaped cross section is integrally formed on the side surface so as to extend inward of the frame 5 from the upper side of the stepped portion 12. The tip 16a of the receiving piece 16 is formed so as to face upward, that is, is formed substantially perpendicular to the groove opening 10 so as to be in the back direction.
[0021]
Next, the sensing piece 17 has a smooth plate-like substrate 18 that is formed along the longitudinal direction of the frame 5 and has a width that can close the groove opening 10 of the frame 5. .
[0022]
As shown in FIG. 2, the substrate 18 extends perpendicularly to one surface 18 a which is the upper surface thereof, and is set to be slightly narrower than the opening width between the support strips 11, 11 of the frame 5. The protrusions 19, 19 provided in pairs in the width direction at the intervals are provided integrally with the substrate 18.
At the tips of the ridges 19, hook-shaped tips 20 are formed integrally with the ridges 19 so as to be parallel to the substrate 18 in the outward (width) direction and formed in a substantially bowl shape.
[0023]
In addition, parallel pieces 21 parallel to the substrate 18 are formed integrally with the protrusions 19 between the tips of the protrusions 19, and the sensing pieces 17 are framed on the upper surface of the parallel pieces 21. A protrusion piece 22 extending perpendicularly to the parallel piece 21 is integrated in the vicinity of the tip of one protrusion 19 (on the right side in FIG. 2) that is positioned substantially opposite to the receiving piece 16 in the state of being attached to 5. Is formed.
[0024]
Further, in the vicinity of both end portions in the width direction of the substrate 18, upright pieces 23 extending in the upward vertical direction are formed in parallel with the ridges 19, respectively. Concave grooves 24 formed on the side surfaces are formed on the side surfaces.
[0025]
As shown in FIG. 2, an abutment plate 25 having a substantially W-shaped cross section is fixed to the bottom surface 18b of the substrate 18 of the sensing piece 17.
[0026]
The sensing piece 17 is attached to and supported by the frame body 5 so that the hook-shaped tips 20 of the pair of protrusions 19 are suspended on the support strips 11, and the groove opening 10 of the frame body 5 is supported. The parallel piece 21 and the projecting piece 22 extend in the depth direction of the groove opening 10 of the frame 5 in this attached state. At the same time, each upright piece 23 extends in a loosely fitted state in each narrow groove 13 of the frame body 5.
[0027]
Next, like the frame 5 and the sensing piece 17, the operating piece 26 is provided through the longitudinal direction which is the width (left and right) direction of the building opening 2, and has a hollow cross section as shown in FIG. 2. A pipe-shaped support body 27, a flat wing body 28, an oscillating body 29 configured with the wing body 28, and a weight piece 30 are included.
[0028]
The support body 27 is formed in a hollow pipe shape having a substantially circular cross section in the present embodiment, and a concave groove-shaped locking part 31 is formed on the outer bottom surface of the lower end part. The receiving piece 16 is engaged from above. In the engaged state with the receiving piece 16, the support 27 is surrounded by the upper plate lower surface 8 a of the frame body 5 and the regulating piece 15 so that it does not easily fall off.
[0029]
Next, as shown in FIG. 2, the wing body 28 is integrally provided on a part of the outer surface of the support body 27 (left side in FIG. 2), as shown in FIG. It extends in the horizontal direction.
[0030]
The oscillating body 29 is formed on the lower surface of the wing body 28 together with the wing body 28 in a hollow pipe shape having a substantially rectangular cross section.
The oscillating body 29 is formed via a vertical plate 32 that extends vertically downward with respect to the plate surface of the wing body 28 and a lower end of the vertical plate 32 via a curved portion 33, and is substantially parallel to the wing body 28. And a bottom plate 34 whose bottom surface is a bottom surface, and a curved surface formed continuously from the edge of the bottom plate 34 via a curved surface and having an outer surface as a contact surface and a tip portion continuously formed below the support 27. It is comprised with the board 35. FIG.
[0031]
Further, the weight piece 30 is provided so as to protrude inwardly on the inner surface side portion (right side in the drawing) of the support body 27 opposite to the wing body 28.
The weight piece 30 is set to be smaller than the weight of the rocking body 29.
[0032]
Then, as shown in FIG. 2, the operating piece 26 is detected in the state in which the oscillating body 29 is below the horizontal in the state in which the operating piece 26 is engaged with the receiving piece 16 in the frame 5. The bottom surface of the bottom plate 34 comes into contact with the top surface of the parallel piece 21 of the piece 17, and the contact surface of the curved plate 35 comes into contact with the tip of the projecting piece 22 of the sensing piece 17. By engaging the locking portion 31 of the support body 27 in a line contact manner, it is possible to swing within the frame body 5 around the locking portion 31 of the support body 27 on the receiving tip 16a. Is attached.
[0033]
In addition, when the sensing piece 17 enters the frame 5, that is, when the sensing piece 17 is lifted as shown in FIG. 3, the actuating piece 26 is pushed up by the oscillating body 29 side by the parallel piece 21 and the projecting piece 22. Thus, the frame 5 is swung in the back direction (upward direction) around the locking portion 31.
[0034]
Next, the detection means 36 is composed of a micro switch in which the actuator 37 is disposed downward, and the tip of the actuator 37 extends into the frame body 5 with respect to the upper plate of the frame body 5 as shown in FIG. It is attached so that it may come out.
[0035]
The tip of the actuator 37 of the micro switch 36 is located inside the frame 5 so as to be in contact with the upper surface of the wing body 28 of the operating piece 26 described above. By swinging upward in the direction, this is detected, and a transmitter 38 connected to the microswitch 36 transmits a sensing signal.
[0036]
The microswitch 36 and the transmitter 38 connected to the microswitch 36 are substantially integrated, and as shown in FIG. 1, only one location is provided near one end of the frame 5 in the longitudinal (left-right width) direction. In addition, a receiver 39 corresponding to the transmitter 38 is provided on the bottom surface of the storage portion 3B of the slat curtain 4 disposed on the upper edge of the building opening 2 and controls the elevation of the slat curtain 4 It is connected to a device (not shown).
[0037]
Next, the cover member 40 is made of a flexible rubber material or a synthetic resin material having good weather resistance, cold resistance, and bending resistance, and the width of the opening of the building is the same as the frame body 5 and the sensing piece 17. It is formed in a long belt shape corresponding to the length in the (left and right) direction.
[0038]
As shown in FIG. 1, the cover member 40 is integrally provided with engaging portions 41 bulging and formed in a circular cross section at both edges along the longitudinal direction.
[0039]
As shown in FIG. 2, the cover member 40 has both edge engaging portions 41, 41 inserted into the concave groove 14 of the frame body 5 and the concave groove 24 of the sensing piece 17. And the outer side of the sensing piece 17, that is, the gap between the outdoor side and the indoor side is covered.
[0040]
Next, the operation of the obstacle sensing device 1 configured as described above will be described.
First, when the slat curtain 4 is lowered by the closing operation, if there is an obstacle X below the slat curtain 4, the contact plate 25 of the sensing piece 17 contacts the obstacle X.
As shown in FIG. 3, the sensing piece 17 is raised by the obstacle X, and the parallel piece 21 and the projecting piece 22 of the sensing piece 17 come into contact with the bottom surface and the contact surface of the working piece 26, thereby It is made to swing upward about the locking portion 31 of the 26 support members 27.
[0041]
At this time, when the operating piece 26 swings, the weight of only the swinging body 29 is not increased by the weight of the weight piece 31 provided on the support body 27, but the load against the swinging of the operating piece 26, that is, the lift. Is reduced, and the swing in the upward direction is assisted, and the operating piece 26 is swung in a state where the load is small.
[0042]
Simultaneously with the rising of the sensing piece 17 with respect to the frame 5, as shown in FIG. 2, the cover member 40 is in a curved state.
[0043]
Then, the wing body 28 of the operating piece 26 pushes the actuator 37 of the microswitch 36 upward, whereby the microswitch 36 outputs a detection signal and wirelessly transmits this signal to the receiver 39 via the transmitter 38. Send in.
[0044]
On the receiver 39 side, this detection signal is sent to a control unit (not shown), whereby the drive motor M shown in FIG. 1 is stopped or reversely driven, and the descent of the slat curtain 4 is stopped or reversely raised. Is done.
[0045]
Then, when the slat curtain 4 rises and the sensing piece 17 is detached from the obstacle X, the sensing piece 17 returns to its initial state by its own weight, and the cover member 40 whose halfway is curved returns to a straight state. The operating piece 26 also returns to the initial state by the restoring force and the own weight of a compression spring (not shown) built in the 36 actuator 37.
[0046]
Note that the obstacle sensing device 1 according to the present embodiment is such that the obstacle X is biased to the outdoor side or the indoor side with respect to the slat curtain 4 and is in contact with only one side of the sensing piece 17. The operating piece 26 is surely raised, and the wing body 28 operates the microswitch 36 to detect the obstacle X.
[0047]
Further, in the above-described embodiment, the configuration only for both the outside surfaces inside and outside has been described. However, on the end faces at both ends in the longitudinal direction of the frame body 5, as shown in FIG. A cover member 40 ′ is disposed on the lower edge of the closing plate 42.
[0048]
In this case, the closing plate 42 that closes the end face is formed in a rectangular shape so as to close both end faces in the longitudinal direction of the frame body 5, and a deep groove 43 is formed in the lower edge.
As shown in FIG. 4, the concave groove 43 sets the opening of the concave groove 43 in an obliquely downward direction toward the end surface of the frame body 5.
[0049]
Further, the cover member 40 ′ is formed in a band shape set to the width of the end surface of the frame body 5, and the engaging portion 41 that is formed to bulge in a circular cross section at one edge portion that becomes the upper edge. 'Is provided integrally.
[0050]
As shown in FIG. 4, the cover member 40 ′ has an upper edge engaging portion 41 ′ inserted into the concave groove 43 of the closing plate 42, and is directed downward from the lower edge of the closing plate 42. It is provided to extend.
According to the cover member 40 ′, since the concave groove 43 is formed in an oblique direction, a biasing force always acts so as to contact the end surface of the frame 5 and the end surface of the sensing piece 17. Thus, the closed state is always maintained regardless of the operation of the sensing piece 17, so that snow and dust do not enter the gap portion at both ends in the longitudinal direction.
[0051]
Therefore, according to the obstacle sensing device 1 configured as described above, the flexible cover member 40 is a movable part on both outer sides of the frame body 5 and the sensing piece 17, that is, on the outdoor side and the indoor side. Since the gap portion is covered, snow or the like does not adhere to the gap portion or snow does not enter the gap portion, and no icing occurs in the gap portion. It becomes possible to advance and retreat with respect to the frame 5 without causing a defect, and the obstacle X can be detected. That is, it is possible to configure the shutter device 3 including the obstacle sensing device 1 that is effective in cold regions.
[0052]
Further, since the cover member 40 is provided in the gap portion between the frame body 5 and the sensing piece 17, dust, sand, pebbles and the like other than the snow described above do not enter the gap portion, that is, the environment. Even in a poor installation location, the above-described obstacle sensing device 1 can obtain an effect that does not cause malfunction, and the reliability of the obstacle sensing 1 can be maintained.
[0053]
In particular, in the above-described embodiment, the contact plate 25 having an uneven surface with a substantially W-shaped cross section is fixed to the bottom surface 18 b of the substrate 18 of the sensing piece 17, so that the slat curtain 4 has the building opening 2. Even when the contact plate 25 of the sensing piece 17 is in contact with the floor surface 6 which is the lower edge of the building opening 2, the contact plate 25 Since the contact area with the floor surface 6 is reduced, even if icing occurs when the slat curtain 4 is closed in a cold region, the floor surface 6 is not firmly fixed, and the closed state is changed to the open state. It can be easily operated.
[0054]
In the above-described embodiment, the example in which the cover members 40 are respectively attached to both the outer side surfaces of the slat curtain 4 on the indoor side and the outdoor side has been described. However, the cover member 40 is attached only at least on the outdoor side. It is good also as a structure.
[0055]
Further, in the above-described embodiment, the closing plate 42 is provided on the end surfaces at both ends in the longitudinal direction of the frame body 5, and the cover member 40 ′ is arranged to hang down on the lower edge of the closing plate 42. Although the example has been described, the same shape as the cover member 40 provided on the outside surface indoors and outdoors between the lower edge of the closing plate 42 provided on the end surface of the frame body 5 and the end surface of the sensing piece 17, that is, It is good also as a structure which arrange | positions the cover member 40 in which the engaging part 41 bulged and formed by the cross-sectional circle shape was integrally formed in the up-and-down edge part.
[0056]
Further, in the above-described embodiment, the cover member 40 is made of a flexible material such as a rubber material or a synthetic resin material and can be bent. It is good also as a cover member.
In this case, the cover member 40 expands and contracts in accordance with the advance / retreat movement of the sensing piece with respect to the frame, thereby preventing the entry of snow or the like into the gap portion.
[0057]
【The invention's effect】
As described above, according to the obstacle sensing device for an opening / closing body according to the present invention, the cover member having flexibility or stretchability is movable outside the frame body and the sensing piece, that is, on the outdoor side or indoor side. Since it is configured to cover the gap, which is a part, snow or the like does not adhere to the gap, or snow does not enter the gap, and freezing does not occur in the gap. Can move forward and backward with respect to the frame body without causing malfunction, and can detect obstacles by the detecting means, thereby improving the reliability of obstacle detection.
That is, it is possible to configure a shutter device including an obstacle sensing device that is effective in cold regions.
[0058]
Further, dust, sand, pebbles, etc. other than the above-mentioned snow are not invaded into the gap portion between the frame body and the sensing piece, that is, the environment is bad. Even at the installation location, the above-described obstacle sensing device can be effectively prevented from malfunctioning.
Further, since the uneven surface is formed on the substrate bottom surface 18b of the sensing piece 17, it is possible to reduce the contact area with the edge (floor surface) 6 of the building opening 2 that faces and contacts the substrate 18. Thus, it is possible to prevent the sensing piece 17 and the edge 6 of the building opening 2 from being fixed due to freezing in a cold region, for example.
Furthermore, since the closing plate 42 is provided on the end faces of the frame body 5 in the longitudinal direction, and the cover member 40 ′ is provided on the lower edge of the closing plate 42, the safety of the obstacle detection device for the snow country cold district shutter is provided. It is possible to achieve a high level of the task of ensuring the sex.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a shutter provided with an obstacle sensing device for an opening / closing body according to the present invention. FIG. 2 is a side sectional view showing an embodiment of the obstacle sensing device. FIG. 4 is a side cross-sectional view showing an operating state. FIG. 4 is a schematic perspective view at the end of the obstacle sensing device.
1 ... Obstacle sensing device 2 ... Building opening 4 ... Opening / closing body (slat curtain)
5 ... Frame 6 ... Edge (floor surface)
DESCRIPTION OF SYMBOLS 10 ... Groove opening 17 ... Sensing piece 18 ... Board | substrate 36 ... Detection means (microswitch)
40 ... Cover member X ... Obstacle

Claims (2)

A groove opening (10) is provided in the lower end surface facing the lower edge of the building opening and extending in the longitudinal direction that is the width direction of the building opening. A frame (5);
A sensing piece (17) having a substrate (18) for closing the groove opening (10) of the frame (5) and being provided so as to be movable forward and backward with respect to the groove opening (10);
A detecting means (36) provided on the frame (5) for detecting the movement of the sensing piece (17) when the sensing piece (17) enters the frame (5);
The outer surface of the frame (5) and the outer surface of the substrate (18) of the sensing piece (17) corresponding to the outer surface are connected to each other, and the frame (5) and the sensing are connected. A flexible cover member (40) covering a gap with the piece (17), and engaging portions (41), (41) formed to bulge at both edges along the longitudinal direction of the cover member (40) (5) and a cover member (40) inserted into the recessed grooves (14) and (24) respectively formed on the outer surface of the sensing piece (17);
A contact plate (25) having an uneven cross-sectional shape fixed to the bottom surface of the substrate (18);
Equipped with,
The frame (5) is provided with a closing plate (42) on both end faces in the longitudinal direction, and a cover member (40 ') is disposed on the lower edge of the closing plate (42). Body obstacle sensing device. The obstacle detection device for an opening / closing body according to claim 1, wherein the cover member is made of a member having elasticity.

Images