JPH04135683U - automatic door switch - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a door switch for an automatic door that has a simple structure, does not require electrical wiring such as curl cords, is inexpensive to manufacture, and is easy to maintain and inspect. purpose. [Structure] A retroreflective photoelectric switch 7 is provided on the doorstop side frame 6 of an automatic door, and the hollow part 11 of the door rubber 5 forms a vertical optical path of the light ray L emitted from the photoelectric switch 7. Light beam reflectors 10 and 12 are provided at both upper and lower ends of the hollow portion 11, and when the door tip rubber 5 is bent due to a foreign object M being caught when the door is closed and the vertical optical path is blocked, the opening/closing driving means 4 operates to open the door. It is characterized by the following.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an automatic device used at the entrances and exits of various vehicles, buildings, elevators, etc. Regarding doors, please refer to the following for more details. The door is designed to detect when the door is jammed and operate the door opening/closing drive means. Regarding the destination switch.

0002

[Conventional technology]

Conventionally, this type of door switch has been disclosed in, for example, Japanese Utility Model Publication No. 10870/1983. As described, a sealed bag body is placed inside the hollow door tip rubber that is attached to the door body. This airtight bag body is connected to the pressure switch installed on the door body side via an air pipe. This prevents pressure changes inside the bag that are deformed by external force caused by objects caught when the door is closed. This is detected and gives a door opening command to the door opening/closing drive means provided on the fixed side. , or as described in Japanese Utility Model Publication No. 55-40649, a hollow door similar to the above A ventilation chamber with a minute communication path with the outside is provided inside the rubber tip, and a membrane is installed at one end of this air chamber. A membrane plate chamber is provided between the plates, and a detection switch that opens and closes by the swinging of the membrane plate is installed in this membrane plate chamber. Install a switch and connect the contact of this switch to the door opening/closing means on the fixed side via the lead wire. There are things that are connected to.

0003

[Problem that the idea aims to solve]

In the conventional technology as mentioned above, the former door switch has a door inside the hollow door tip rubber. A bag separate from the door rubber is installed along the entire length, and the switch is connected to the bag. Because it is necessary to install air pipes in between, the structure is complicated and large-scale. Not only is the production cost high, maintenance and inspection are also troublesome, and the latter door switch In some cases, the switch contacts open and close mechanically due to changes in internal pressure due to deformation of the air chamber. Since the switch is operated, it is very troublesome to adjust the sensitivity of the switch, and it is easy to cause malfunction. stomach.

0004 Furthermore, both automatic doors have a detection switch on the door body, so this Connect the lead wire that electrically connects the switch and the door opening/closing drive means with a curl cord, etc. It is necessary to extend and contract the wiring from the door body side to the fixed side of the door using Therefore, the equipment becomes complicated and maintenance inspection becomes more troublesome.

[0005] In view of the problems of the prior art as described above, the present invention has a simple structure and There is no need for electrical wiring such as curl cords, so manufacturing costs are low and maintenance and inspection are easy. The purpose is to provide a door switch that is

[0006]

[Means to solve the problem]

In order to solve the above problem, in the door switch of claim 1, the automatic door is fixed. A retroreflective photoelectric switch is installed on the fixed side, while the hollow part of the door rubber attached to the door body said hollow part so as to form a vertical optical path of the light beam emitted from said photoelectric switch. A light reflector is provided on both the upper and lower ends of the When the vertical optical path is blocked by bending, the opening/closing driving means operates to open the door. It is characterized by the following.

[0007] In addition, in the door switch of claim 2, in addition to the structure of claim 1, the door switch has the following features: A manual operating tool such as a handle is installed on the door, and the door opening is linked to the operation of this manual operating tool. An optical path blocker that blocks the vertical optical path in the rubber hollow part is installed so that it can move forward and backward with respect to the vertical optical path. , when the manual operating tool is operated and the vertical optical path is interrupted, the opening/closing drive means operates the door. It is characterized by being made to be able to

[0008]

[Effect]

According to the door switch of claim 1, when the door body is about to close, a foreign object may come into contact with the door rubber. When the foreign object gets caught between the fixed door stop and the door stop, the door stop will be damaged due to the The beam deforms and flexes inward, blocking the vertical optical path within the hollow. As a result, photoelectric The ON/OFF state of the switch changes, an opening command signal is sent to the opening/closing drive means, and the door is closed. The foreign object can be released by opening the door body.

[0009] Further, in the door switch of claim 2, when the door body is about to close, a foreign object may get caught. When it is stuck, the door tip rubber deforms and bends inward as in claim 1, causing the vertical optical path to change. is shut off, and the ON/OFF state of the photoelectric switch changes to open the door body. Not only is it possible to open the door, but a person with the intention to open the door can operate the manual operation tool to block the light path. By artificially blocking the vertical optical path with a disconnector, the photoelectric switch can be turned on or off. When the FF status changes, a door opening command signal is also issued, allowing the door to be opened at the desired time. can be done.

0010

【Example】

An example of the present invention will be explained with reference to the drawings. This is a partial cross-sectional front view of a single-sliding type automatic door seen from inside the car. In the figure, 1 is the door body that opens and closes the entrance and exit of the vehicle, and the upper guide rail 2 has a wheel. It is suspended so as to be horizontally movable via 3, and is driven to open and close by an opening and closing drive means 4. A hollow door tip rubber 5 that can be elastically deformed is attached along the edge of the door tip side of the door body 1. It is being 6 is the doorstop side frame of an automatic door, and a retroreflective photoelectric switch is installed on the upper end of the frame. 7 is installed. 8 is from a movable handle provided near the door tip rubber 5 of the door body 1. It is a manual operating tool. Note that the opening/closing drive means 4 may be operated by fluid pressure as shown in the figure. Various types such as cylinder type and electric type can be used.

[0011] A bracket 9 for attaching a light reflector is installed at the upper end of the door body 1 on the door tip side. An upper light reflector 10 made of a mirror body is mounted on this bracket 9 horizontally. Opposed to the photoelectric switch 7 on the door stop side frame 6 at an angle of 45 degrees to the surface. It is installed so as to face the hollow part 11 of the door tip rubber 5, and is installed under this hollow part 11. A lower light reflector 12 made of a similar mirror body is disposed at the end, and this hollow The portion 11 forms a vertical optical path of the light beam L emitted from the photoelectric switch 7. It has become. The lower light reflector 12 is made of gold fitted into the lower end of the hollow part 11. It is mounted on a rubber end support piece 13 made of a rigid body such as rubber or hard synthetic resin. Also, at the upper end of the hollow part 8, there is a rubber end part formed in an annular shape and made of a rigid body such as metal. A support piece 14 is fitted.

0012 A photoelectric switch 7 provided on the door stop side frame 6 and a photoelectric switch 7 provided on the door body 1 side. Both the upper and lower light reflectors 10 and 12 are arranged horizontally from the photoelectric switch 7. The light ray L emitted from the top reaches the upper light reflector 10, and this upper light reflector 1 0, the ray L that is perpendicular to the horizontal optical path at the time of emission and reflected vertically downward reaches the hollow part. 11 to reach the lower light ray reflector 12, and this lower light ray reflection The light beam L reflected by the body 12 returns through the vertical optical path and the horizontal optical path to the photoelectric switch. It is positioned so that it enters the light receiving section 7.

[0013] As mentioned above, the light beam L emitted from the photoelectric switch 7 follows the horizontal optical path and the vertical optical path. When it returns to the light receiving section, this photoelectric switch 7 is turned off, for example. If there is, if the optical path is interrupted midway, it will switch to the ON state and open. An opening command signal is issued to the closing drive means 4, thereby causing the opening/closing drive during the closing operation. The means 4 will operate to open the door after once stopping its operation. In addition, photoelectric switch It detects the change in the ON/OFF state of 7 and instructs the opening/closing drive means 4 to open the door. Therefore, when the light beam L returns and enters the light receiving part, the photoelectric switch 7 is in the ON state. It can also be used as a state. In that case, if the optical path of the light beam L is interrupted midway, the photoelectric switch will naturally The switch 7 is switched to the OFF state and an opening command signal is not issued to the opening/closing drive means 4. It will be done.

[0014] Therefore, as shown in FIG. 1, when the door body 1 is about to close, the foreign object M is 5 and the doorstop 6a, the doorstop will be damaged due to the pinching of this foreign object M. The rubber 5 deforms and bends inward, thereby blocking the vertical optical path inside the hollow part 11. As a result, the photoelectric switch 7 is switched from the OFF state to the ON state. Then, the door body 1 that is about to close is opened, and the foreign object M can be released.

[0015] Moreover, as shown in FIG. The base end of the swing arm 16 is fixed to a support shaft 15 that is currently attached to the support shaft 15. The parts are fixed. On the other hand, inside the door body 1, a horizontal A movable rod 19 supported only so as to be movable is disposed, and this movable rod 1 The distal end bifurcated portion 2 of the swing arm 16 is attached to the engaging protrusion 20 protruding from the intermediate required portion of the swing arm 16. 1 is engaged.

[0016] The movable rod 19 has an optical path that blocks the vertical optical path of the hollow portion 11 at one end thereof. A blocker 22 is formed, and the rod can move forward and backward with respect to the vertical optical path through the rod insertion opening 23. It has become. Further, the other end side of the movable rod 19 has a tip flange portion 24 and a guide. 18, the optical path blocking body 22 is always urged to a position away from the vertical optical path. A coil spring 25 is interposed therebetween. Therefore, the manual operating tool 8 is connected to the coil spring 2. The tilting operation is performed from the position shown by the solid line in FIG. 2 to the position shown by the phantom line in FIG. 2 against the urging force of 5. As a result, the optical path blocker 22 enters the hollow portion 11 through the rod insertion port 23 and vertically Block the optical path. In FIG. 2, 26 indicates that the optical path blocker 22 is retracted as shown by the solid line. A stopper 27 for restricting the optical path blocker 22 to the retracted position prevents the optical path blocker 22 from entering as shown in the phantom line. This is a stopper that limits the position.

[0017] As described above, the vertical optical path of the hollow part 11 is blocked in conjunction with the tilting operation of the manual operating tool 8. In an automatic door using a door switch equipped with a light path blocker 22 that cuts off the light path, it is possible to have the intention to open the door. This is effective when opening the door automatically according to the person's request. Especially in railway vehicles. If applied to automatic sliding door devices for commuter cars, etc., it will prevent crowds of passengers from standing near the entrances and exits of the throughway. In such situations, the door may be opened frequently using a mat switch, etc., regardless of whether the passenger intends to open the door or not. The inconveniences of conventional through-path automatic sliding door devices, such as frequent automatic opening and closing, have been resolved. That will happen.

[0018] In the door switch shown in Figure 1, a mirror body is used as the upper light reflector. Although the projector 10 was used, FIG. A projectile 28 is shown. When using a prism like the one shown in Figure 3, By fitting and fixing the base end 28a into the upper end of the rubber door 5, the The line reflector mounting bracket 9 and the rubber end support piece 14 can be omitted, Also, since the upper end of the door rubber 5 is blocked, dust etc. will not get on the lower light reflector 12. can be prevented.

[0019]

[Effect of the idea]

According to the door switch of claim 1, since the detection switch is provided on the fixed side, In particular, it eliminates the need for curl cords and other electrical wiring, and is more effective than traditional door switches. The structure is extremely simple, there are few malfunctions, and switch sensitivity adjustment and maintenance inspection are easy. It becomes easier.

[0020] Further, according to the door switch of claim 2, the door can be opened by operating the manual operating tool. The door body can be opened by arbitrarily blocking the vertical optical path inside the hollow part of the rubber tip. In particular, if applied to the through-path automatic sliding door device for commuter cars in railway vehicles, it will be possible to enter and exit the through-path When the area near the door is crowded with customers, a person who intends to open the door operates this manual operation device. Only by doing so can the opening/closing driving means be reliably operated to open the door.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view showing a door switch according to the present invention.

FIG. 2 is a partially sectional front view showing the operation of a manual operating tool and an optical path blocking body interlocked therewith in the door switch of FIG. 1;

FIG. 3 is a partially cross-sectional main part front view showing an example in which a prism is used as a light beam reflector.

[Explanation of symbols]

1 Door body 4 Opening/closing drive means 5 Door rubber 6 Door stop side frame 7 Retroreflective photoelectric switch 8 Manual operating tools 10 Upper light reflector 11 Hollow part of door rubber 12 Lower side light reflector 19 Movable rod 20 Optical path blocker L ray M Foreign object

Claims (2)

[Scope of utility model registration request] Claim 1: In an automatic door in which a door body provided with a hollow door tip rubber is opened and closed by an opening/closing drive means, a retroreflective photoelectric switch is provided on the fixed side of the automatic door, and the door body provided with a hollow door tip rubber Light ray reflectors are provided at both upper and lower ends of the hollow part so that the part forms a vertical optical path for the light rays emitted from the photoelectric switch, and when the door rubber is bent by foreign objects caught when the door is closed, the vertical optical path is A door switch that operates the opening/closing driving means to open the door when the door is shut off. 2. The door body is provided with a manual operating tool such as a handle, and in conjunction with the operation of the manual operating tool, an optical path blocking body that blocks the vertical optical path in the hollow portion is moved forward and backward with respect to the vertical optical path. 2. A door switch according to claim 1, wherein said door switch is freely provided, and said opening/closing driving means is operable to open the door when said manual operating tool is operated and said vertical optical path is interrupted.