JP2020190160A - Opening/closing device - Google Patents

Abstract

To provide an opening/closing device capable of detecting an obstacle without lowering shielding property.SOLUTION: An opening/closing device, which is configured to detect an object under shielding material 30 by non-contact sensors 53 and 54, includes at least one or more sensing units 50 provided at the lower end of the shielding material. The sensing unit 50 has a movable part 52 provided with the non-contact sensors 53 and 54, and a housing part 51 for housing the movable part so as to be allowed to protrude downward and to move in the vertical direction.SELECTED DRAWING: Figure 1

Description

The present embodiment relates to a switchgear that electrically opens and closes a shielding material.

Conventionally, as an opening / closing device for opening / closing a shielding material by driving a motor in an electric blind, an opening / closing means that moves to open / close the opening and an opening / closing means that moves together with the opening / closing means are provided on both sides of the closing end of the opening / closing means. It is composed of a non-contact obstacle detecting means composed of two photoelectric sensors provided in the above, a detecting means for detecting the state of the opening / closing means, and a detecting means provided so as to move together with the opening / closing means. A transmission means that wirelessly transmits a detection signal indicating the state of the opening / closing means, and an operation of the opening / closing means that is provided so as to move together with the opening / closing means, receives a detection signal from the transmission means, and operates according to the content of the detection signal. A switchgear provided with a control means for controlling the above is known (see Patent Document 1).

According to such a switchgear, the photoelectric sensor as an obstacle detecting means moves up and down together with the opening / closing means, and when an obstacle exists in the obstacle detection area of the two photoelectric sensors, the control means operates the opening / closing means. Can be stopped.

Japanese Unexamined Patent Publication No. 2014-005698

In the switchgear described in Patent Document 1 described above, since the obstacle to be detected is located below the opening / closing means, the photoelectric sensor as the obstacle detecting means constituting the detecting means is the tip on the closing side of the opening / closing means. It needs to be positioned below the lower end, that is, at a position protruding from the lower end of the opening / closing means. Therefore, the lower limit position of the opening / closing means is a position separated from the floor surface by the protruding position of the photoelectric sensor. Therefore, even when the opening / closing means is fully closed, there is a gap between the lower end of the opening / closing means and the floor surface. There is a problem that it occurs and the shielding property is lowered.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a switchgear capable of detecting an obstacle without lowering the shielding property.

In order to solve the above-mentioned problems, one aspect of the present invention is an opening / closing device that detects an object below the shielding material by a non-contact sensor, and at least one or more detections provided at the lower end of the shielding material. The detection unit includes a movable portion provided with the non-contact sensor, and a housing portion for accommodating the movable portion so as to be able to project downward and movably accommodate the movable portion in the vertical direction.

According to the present invention, obstacles can be detected without lowering the shielding property. Other effects of the present invention will also be described in the section of embodiments for carrying out the following inventions.

It is a schematic front view which shows the structure of the electric blind which concerns on 1st Embodiment. It is the schematic perspective view which shows the structure of the detection part which concerns on 1st Embodiment. It is a schematic front view which shows the structure of the detection part in the non-accommodation state which concerns on 1st Embodiment. It is a schematic front view which shows the structure of the detection part in the accommodation state which concerns on 1st Embodiment. It is a schematic front view which shows the electric blind in which the shielding material which concerns on 1st Embodiment moves down. It is a schematic front view which shows the electric blind which stops the lowering operation of the shielding material which concerns on 1st Embodiment. It is a schematic front view which shows the structure of the detection part in the non-accommodation state which concerns on 2nd Embodiment. It is a schematic front view which shows the structure of the detection part in the accommodation state which concerns on 2nd Embodiment. It is a schematic front view which shows the electric blind in the descending operation which concerns on 3rd Embodiment. It is a schematic front view which shows the electric blind which stops the descending operation which concerns on 3rd Embodiment. It is an exploded perspective view which shows the structure of the detection part which concerns on 3rd Embodiment. 9 is a cross-sectional view taken along the line AA of FIG. FIG. 10 is a cross-sectional view taken along the line AA of FIG.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the following description, the indoor surface when the electric blind is provided is the front, the outdoor surface is the back, the direction orthogonal to the front and the back is the front-rear direction, and the longitudinal direction of the electric blind is the left-right direction. I will explain it later. Further, in the present specification and the drawings, components having substantially the same function are designated by the same reference numerals, so that duplicate description will be omitted.

<First Embodiment>
(overall structure)
The overall configuration of the electric blind including the switchgear according to the first embodiment will be described. FIG. 1 is a schematic front view showing the configuration of the electric blind according to the present embodiment.

As shown in FIG. 1, the electric blind 1 according to the present embodiment is configured as an electric roll screen, and includes a set frame 10, two brackets 11, a power cord 12, a take-up pipe 20, and a screen 30 as a shielding material. A weight bar 40 is provided. The set frame 10 is a support member that rotatably supports the take-up pipe 20, and is attached to a window frame or the like via two brackets 11. The take-up pipe 20 is a cylindrical member formed long in the left-right direction, and its left and right ends are supported by the set frame 10 so as to be rotatable around a rotation axis facing the left-right direction. The screen 30 is formed in a film shape, and the upper end thereof is connected to the take-up pipe 20 so as to be windable and unwindable. The weight bar 40 is formed as long as the width of the screen 30, and is connected to the lower end of the screen 30.

Further, the electric blind 1 includes a motor unit 21 built in the take-up pipe 20, two detection units 50a and 50b provided at the left and right ends of the weight bar 40, a reception unit 57, and a power supply unit 59. Further prepare.

The motor unit 21 includes a motor 211 that rotationally drives the take-up pipe 20 around a rotation axis, and a control unit 212 that rotates or stops the motor 211 in one direction or the opposite direction. The control unit 212 controls the motor 211 based on an operation command from the operator, and also controls the motor 211 based on the detection signal received by the reception unit 57. The detection signal will be described in detail later.

The detection units 50a and 50b are provided at both ends of the weight bar 40, and in the present embodiment, the detection unit 50a is attached to the left side when the electric blind 1 is viewed from the front, and the detection unit 50b is attached to the right side. When explaining the configuration common to the detection units 50a and 50b, the detection unit 50a and the detection unit 50b are collectively referred to as the detection unit 50. The detection unit 50, the reception unit 57, and the motor unit 21 constitute an opening / closing device for opening / closing the screen 30.

The power supply unit 59 is a power source that supplies electric power to the detection units 50a and 50b, and is configured as, for example, a primary battery, a secondary battery, or a solar cell. The power supply unit 59 may be omitted, and power may be supplied to the detection units 50a and 50b by a power supply (not shown) that supplies power to the motor unit 21 and the reception unit 57.

(Configuration of detector)
The configuration of the detection unit according to the first embodiment will be described. FIG. 2 is a schematic perspective view showing the configuration of the detection unit according to the present embodiment. 3 and 4 are schematic front views showing the configurations of the detection unit in the non-contained state and the contained state, respectively, according to the present embodiment. In addition, in FIG. 3 and FIG. 4, a part of the detection unit is shown as a cross section.

As shown in FIGS. 2 to 4, the detection unit 50 has an accommodating unit 51 and a movable unit 52, and the movable unit 52 of the detection unit 50a is provided with a light projecting unit 53, and the movable unit 52 of the detection unit 50b. Is provided with a light receiving unit 54, and a transmissive photoelectric sensor is formed by the light emitting unit 53 and the light receiving unit 54. Further, the detection unit 50b having the light receiving unit 54 is provided with a transmission unit 56 (see FIGS. 3 and 4).

The accommodating portion 51 is formed so as to accommodate the movable portion 52 downward so as to be able to appear and disappear. The movable portion 52 is formed so as to be accommodating in the accommodating portion 51 and is locked to the accommodating portion 51 in a state of being movable in the vertical direction and projecting downward by a predetermined distance. Here, the accommodation includes a state in which the movable portion 52 having the photoelectric sensor moves upward and does not protrude below the weight bar 40, and the accommodating portion 51 includes a state in which the movable portion 52 moves upward and does not protrude below the weight bar 40. Also includes a part that is held so that it does not protrude downward. A light emitting unit 53 and a light receiving unit 54 are provided below the movable portion 52, specifically, at a position where the movable portion 52 can protrude from the accommodating portion 51. The light projecting unit 53 is provided on the movable unit 52 of the detection unit 50a so that the light projecting direction faces inward in the width direction of the electric blind 1, that is, in the left-right direction. The light receiving unit 54 is provided on the movable portion 52 of the detection unit 50b so that the light projected by the light projecting unit 53 can be received in a state where the movable portions 52 of the detection units 50a and 50b are projected downward.

The photoelectric sensor composed of the light emitting unit 53 and the light receiving unit 54 arranged in this way is used when the light projected by the light emitting unit 53 is not received by the light receiving unit 54, that is, below the weight bar 40. When there is an object that blocks light, a detection signal indicating that an obstacle has been detected is output.

(Operation of switchgear)
The operation of the switchgear will be described. FIG. 5 is a schematic front view showing an electric blind in which the shielding material according to the present embodiment is lowered. FIG. 6 is a schematic front view showing an electric blind in which the lowering operation of the shielding material according to the present embodiment is stopped.

The switchgear composed of the detection unit 50, the reception unit 57, and the motor unit 21 winds the screen 30 when the closing operation is instructed by the operation command by the operator when the electric blind 1 is not in the fully closed state. Unravel and lower the weight bar 40. At this time, the movable portion 52 of the detection unit 50 projects downward, and when an obstacle exists below the weight bar 40 by the photoelectric sensor, the control unit 212 stops the closing operation. Specifically, when the detection signal output by the photoelectric sensor is transmitted by the transmitting unit 56 by wireless communication and the transmitted detection signal is received by the receiving unit 57, the control unit 212 stops the closing operation. The detection signal may be transmitted by providing a signal line on the screen 30 and connecting the light receiving unit 54 and the control unit 212 by wire using the signal line.

As shown in FIG. 4, when the electric blind 1 is fully closed and the weight bar 40 is brought close to the floor surface FL, the movable portion 52 is pressed by the floor surface FL and moved upward in the detection unit 50. It is housed in the housing section 51. By configuring the movable portion 52 so as to be movable and accommodating in the vertical direction in this way, it is possible to detect an obstacle without lowering the shielding property.

Further, when the movable portion 52 is accommodated in the accommodating portion 51, the light projected by the light projecting unit 53 is blocked by a part of the detecting unit 50 or the weight bar 40, and the detection signal is transmitted by the photoelectric sensor. Since the output is obtained, the control unit 212 can stop the closing operation even when the electric blind 1 is fully closed, and the detection unit 50 functions as a lower limit position detection sensor.

<Second embodiment>
The electric blind according to the second embodiment will be described. FIG. 7 is a schematic front view showing the configuration of the detection unit in the non-contained state according to the present embodiment. FIG. 8 is a schematic front view showing the configuration of the detection unit in the accommodation state according to the present embodiment.

As shown in FIGS. 7 and 8, the electric blind 2 according to the present embodiment uses a reflection type photoelectric sensor instead of the transmission type photoelectric sensor, and therefore, the configurations of the detection units 50a and 50b are the first. It is different from the embodiment of 1. Specifically, the detection unit 50a has a movable unit 52a instead of the movable unit 52, the detection unit 50b has the movable unit 52b instead of the movable unit 52, and the transmission unit 56 is provided in the detection unit 50a. The point is different from the first embodiment.

The movable portion 52a is provided with a light emitting portion 53 and a light receiving portion 54, and the movable portion 52b is provided with a reflecting portion 55. The light projecting unit 53 projects light inward in the left-right direction, and the reflecting unit 55 receives the light projected by the light projecting unit 53 in a state where the movable units 52a and 52b are projected downward. It is provided so as to reflect to.

As described above, by using the reflection type photoelectric sensor, the components of one of the detection units 50b can be reduced, and the degree of freedom in design can be improved.

<Third embodiment>
(overall structure)
The overall configuration of the electric blind according to the third embodiment will be described. FIG. 9 is a schematic front view showing the electric blind during the descending operation according to the present embodiment. FIG. 10 is a schematic front view showing an electric blind in which the descending operation according to the present embodiment is stopped.

As shown in FIGS. 9 and 10, the electric blind 3 according to the present embodiment is installed in the window frame F and includes two guide rails 15, instead of the two detection units 50a and 50b and the weight bar 40. It differs from the first embodiment in that the detection unit 6 is provided.

The two guide rails 15 are provided on both sides of the electric blind 3 so as to close the gap generated between the screen 30 and the window frame F and to allow the detection unit 6 to move only in the vertical direction. That is, it is a member that guides the movement in the front-rear direction. Each of the two guide rails 15 is formed at a height below the box cover 10A containing the take-up pipe (not shown) so as to close the gap over substantially the entire vertical direction. Each of the two guide rails 15 is provided with a power supply rail 16 over substantially the entire vertical direction, and as will be described in detail later, the power supply rail 16 supplies power to the motor unit 21. Power is supplied to the detection unit 6.

The detection unit 6 is formed of a main body 60 which is formed long in the left-right direction and also functions as the weight bar 40 in the first embodiment, and a member which is long in the left-right direction and has flexibility. It has a movable portion 63. Further, a transmission unit 56 is provided at the right end of the detection unit 6.

The movable portion 63 is formed so as to be accommodating in the accommodating portion 61 formed in the main body portion 60 as in the movable portion 52 in the first embodiment, and is accommodating in a state of being movable in the vertical direction and protruding downward by a predetermined distance. It is formed so as to be locked to the portion 61. As shown in FIG. 9, when the movable portion 63 does not come into contact with an obstacle or the lower side portion of the window frame F from below, the movable portion 63 is in a state of protruding downward, as shown in FIG. When the lower side portion abuts from below, or when an obstacle abuts from below, the lower side portion is moved upward and is accommodated in the accommodating portion 61. The detailed configuration of the detection unit 6 will be described later.

(Configuration of detector)
The configuration of the detection unit according to the third embodiment will be described. FIG. 11 is an exploded perspective view showing the configuration of the detection unit according to the present embodiment. 12 and 13 are cross-sectional views taken along the line AA of FIGS. 9 and 10, respectively. Since the detection unit is formed substantially symmetrically, in FIG. 11, the configuration from the left end portion to the middle portion is represented.

As shown in FIG. 11, caps 60a are connected to both ends of the main body 60, and the caps 60a are slidably and electrically connected to the power supply rail 16. The power receiving unit 68 formed as described above is provided. Further, as shown in FIGS. 12 and 13, a part of the main body 60 is formed so that the lower end of the screen 30 can be connected.

As shown in FIGS. 11 to 13, the movable portion 63 is formed so as to function as a cushioning member, and the light emitting portion 64 and the light receiving portion 65 (see FIG. 10) are upward at both ends in the left-right direction thereof. It is provided so that it can be placed. Inside the movable unit 63, an electric wire 631 that electrically connects one power receiving unit 68 and the light emitting unit 64 to supply power to the light emitting unit 64 is inserted, and similarly, the other power receiving unit 68 and the light receiving unit receive light. An electric wire 631 that electrically connects to the unit 65 and supplies electric power to the light receiving unit 65 is inserted. It should be noted that the electric power may be supplied to both the light emitting unit 64 and the light receiving unit 65 via only one power receiving unit 68.

As shown in FIGS. 12 and 13, a blocking portion 611 is provided in the accommodating portion 61 so as to project downward from above. The blocking unit 611 is formed so as to be located between the light emitting unit 64 and the light receiving unit 65 in the left-right direction. Further, as shown in FIG. 13, the blocking unit 611 blocks the light projected by the light emitting unit 64 before being received by the light receiving unit 65 when the movable unit 63 is moved upward. Is formed in.

When an obstacle comes into contact with the movable portion 63 from below, the movable portion 63 can be moved upward as a whole or one end thereof can be positioned above the other end depending on the contact position in the left-right direction. In any case, the light projected from the light emitting unit 64 is blocked before being received by the light receiving unit 65.

According to the present embodiment, the detection unit 6 can detect obstacles while functioning as a weight bar having a buffer member. According to the movable portion 63 being formed of a flexible member, when the electric blind 3 is fully closed, the movable portion 63 functions as a sealing material for closing the gap between the movable portion 63 and the floor surface F. , The shielding property can be improved.

The present invention can be practiced in various other forms without departing from its gist or main features. Therefore, the above-mentioned first to third embodiments are merely examples in all respects and should not be interpreted in a limited manner. The scope of the present invention is shown by the scope of claims, and is not bound by the text of the specification. Moreover, all modifications, modifications, substitutions and modifications that fall within the equivalent scope of the claims are all within the scope of the present invention.

In the above three embodiments, an electric roll screen has been described as an example of the electric blind, but a shielding material such as a horizontal blind, a honeycomb screen, a pleated screen, and a raised curtain can be electrically operated up and down. It can be applied to all shielding devices. Further, in the above-mentioned three embodiments, an obstacle is detected by using a photoelectric sensor. However, instead of the photoelectric sensor, for example, depending on whether or not the emitted radio wave or ultrasonic wave is blocked by the obstacle. Other sensors that detect obstacles may be used.

1 Electric blind 50 Detection unit 51 Accommodating unit 52 Moving unit 53 Light emitting unit 54 Light receiving unit

Claims (8)

A switchgear that detects an object under the shielding material with a non-contact sensor.
It is provided with at least one or more detection units provided at the lower end of the shielding material.
The detection unit is an opening / closing device including a movable portion provided with the non-contact sensor and an accommodating portion that allows the movable portion to project downward and movably accommodates the movable portion in the vertical direction. The first aspect of the present invention is that the non-contact sensor is a photoelectric sensor having a light projecting unit that projects light in the width direction of the shielding material and a light receiving unit that receives the projected light. The opening and closing device described. Two detection units are provided on one side and the other side in the width direction of the shielding material.
The switchgear according to claim 2, wherein the light projecting unit is provided in a movable portion of a detection unit on one side, and the light receiving unit is provided in a movable portion of a detection unit on the other side. The non-contact sensor further has a reflecting unit that reflects the light projected by the projecting unit.
Two detection units are provided on one side and the other side in the width direction of the shielding material.
The switchgear according to claim 2, wherein the light emitting portion and the light receiving portion are provided on a movable portion of a detection unit on one side, and the reflecting portion is provided on a movable portion of the detection unit on the other side. The switchgear according to claim 3, wherein the two detection units are provided at both ends of a weight bar provided at the lower end of the shielding material. One detection unit is formed long in the width direction of the shielding material.
The claim is characterized in that the light projecting portion is provided on one end side of the movable portion in the width direction of the shielding material, and the light receiving portion is provided on the other end side of the movable portion in the width direction of the shielding material. 2. The opening / closing device according to 2. The switchgear according to claim 6, wherein the movable portion has flexibility. The light emitting portion and the light receiving portion are provided above the movable portion, and the accommodating portion is provided between the light emitting portion and the light receiving portion in the width direction of the shielding material, and is provided by the light receiving portion. The switchgear according to claim 6 or 7, wherein a blocking portion that projects downward so as to block the projected light is formed.

Images