JPH0734143Y2 - Door collision prevention device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door collision prevention device for preventing a person on the other side of the door from colliding with the door when the door is pushed open to the other side.

[0002]

[Prior Art and Problems to be Solved by the Invention] In general,
When I try to open the door, I don't know if there is a person on the other side, so when I push the door open, I fear that I might hit someone on the other side of the door and cause injury. It's a problem. Therefore, it is proposed to use a shock absorber or a door check for the door to forcefully delay the opening / closing operation speed of the door to delay it.
However, in this case, it is inconvenient because the opening operation of the door is delayed when you want to open the door quickly to get out of the room, and in addition, it strongly tries to push strongly against the operation resistance, so a strong operating force is required. This creates an image and gives a feeling that the door is heavy to operate, which is not the actual situation.

Therefore, it is detected that there is a person on the other side,
It is also proposed to notify the user of this, but when the door is not opened, there is a problem in that the detection operation is performed even if only the person on the other side of the door performs the detection operation.

[0004]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing a door collision prevention device capable of eliminating these drawbacks in view of the above-mentioned circumstances. A detector for detecting the presence of a person in the door is attached to one side of the door, and an informing tool for informing by a detection command from the detector is provided on the other side, and a knob provided on the other side of the door is A switch is provided which is closed in connection with turning the knob to the open side, and the switch is used as a switch for supplying power to the detector so that the detection operation of the detector is performed when the knob is turned to the open side. It is characterized by being configured in.

According to the present invention, with this configuration, it is possible to detect whether or not a person is on the other side only when the door is being opened.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is a so-called open door that is hinged on one side to open and close, and is installed at an opening at the boundary between a room and a corridor, and in the embodiment, is pushed open toward the leak side. . 2 is a knob on the outdoor side (corridor side), 3 is a knob on the indoor side, 4 is a latch bolt, knobs 2 and 3 are pedestals 2a,
It is rotatably attached to the door 1 by 3a, and by manually turning the knobs 2 and 3 to the open side, the latch bolt 4 appears sideways from the door 1 and engages with the latch hook 8a provided on the door frame 8. As in the conventional case, the lock bolt 4a is provided in parallel with the latch bolt 4 in parallel with the latch bolt 4.

Reference numeral 5 denotes a light receiving detector, which comprises a light receiving section 5a, an amplifier 5b, a judging section 5c, a command section 5d and a battery 5e, and is installed on the outside of the door 1 (on the surface plate 1a side). To be done. A small multi-lens is used for the light receiving section 5a, and receives light from the corridor side (outside). The received light is replaced with an electric current, amplified by the amplifier 5b, and circulated to the judgment unit 5c. The determination unit 5c stores the reference luminous intensity i ₀ in the normal state (the state in which there is nothing that blocks the received light), and the luminous intensity i when the light is blocked (not constant) and the reference luminous intensity i _0.
It is configured to determine whether or not the difference between and exceeds a predetermined value K, and only when the difference exceeds the predetermined value K, the command unit 5d issues a command.

Reference numeral 6 denotes an indicator lamp such as a lamp provided on the indoor side of the door 1, which is connected by a wiring 7 from the light receiving detector 5 and is turned on by a command from the light receiving detector 5. ing. Instead of the indicator lamp 6, various commonly known notifying tools such as a buzzer and a sound generator for music or the like may be provided, or both of them may be provided. A battery 5e of about 12 to 24 V is generally used as a power source for the light receiving detector 5, the indicator lamp 6, and the like. For the purpose of the present invention, it is sufficient to detect that the light receiving unit 5a is blocked by a person only when a person is present in the rotation operation range of the door 1. Therefore, for example, the range of light reception is detected. It is preferable to set about 30 cm from the door 1.

Further, a switch contact 3b is provided on the outer peripheral edge of the indoor knob 3, and the pedestal 3a also has a switch contact 3b.
c is provided, and when the indoor knob 3 is turned, the switch contacts 3b and 3c are contacted with each other so that the switch is closed, and the switch from the battery 5e to the light receiving detector 5 is set. The power supply is set to be performed only when the knob 3 is turned to the open side.

In the embodiment of the present invention constructed as described above, the knob 3 is now used to push and open the door 1 from the indoor side.
When the switch is turned to the open side, the switch contacts 3b, 3
c. The comrades come into contact with each other and close, and the power from the battery 5e is supplied to the light receiving detector 5, whereby the light receiving detector 5 detects whether or not there is a person beside the door 1 on the corridor side. However, when the presence of a person is detected, the indicator light 6 is turned on, so that the person trying to push and open the door 1 immediately knows that the person is on the other side of the door 1. In that case, if you do not open the door 1 at that time, or if you take care to open it very quietly little by little, you may hit the door 1 that has been pushed open against a person as before. Can be prevented in advance.

In the case where the present invention is implemented in this way, the indicator lamp 6 is lit based on the detection of the person on the other side to inform the person of this fact, and the person who is trying to push open the user's attention. However, this detection operation is performed by closing the switch only when the knob 3 is turned to push and open the door 1. As a result, it is possible to surely avoid wasteful consumption of the battery 5e, and when it is not necessary to open the door,
That is, when there is no need to detect a person, there is no annoyance that the indicator lamp 5 is turned on based on the person's detection.

Another embodiment is shown in FIG. 5, but since the light receiving detector 5 of this embodiment is as small as soybean grains, the light receiving portion 5a is of the outdoor knob 2 of the door 1. This is the one that is installed in the center so that it faces outward, and by doing so, the light receiving detector is mounted so that it cannot be seen from the outside without impairing the original functions of the lock, such as the final tightening. There is an advantage that you can.

[0013]

[Advantages] In summary, the present invention is constructed as described above, and when the door is pushed to one side and the knob on the other side is turned to the open side, the switch is closed in connection with this. The detector that has been in a power supply state is configured to detect whether or not a person is present near the one side of the door, and when the presence of a person is detected, an alarm operation is performed from the alarm tool accordingly. A person who tries to push the door open by this means that he or she is immediately on the other side of the door, and either does not open the door at that time, or, with caution, gently and gradually. Considering that the door can be opened, it is possible to prevent the problem of hitting a person with a conventionally pushed door against a person.

In this way, the operation of detecting whether or not there is a person near one side of the door is performed by closing the switch only when the knob on the other side is turned to the open side to push the door open. As a result, useless consumption of the power source can be reliably avoided, and even when there is no need to push the door open, the annoyance of the alarm device based on the human detection is annoying. Not at all.

[Brief description of drawings]

FIG. 1 is a front view of a door.

FIG. 2 is a side view of the same.

FIG. 3 is a side view of a knob.

FIG. 4 is a block diagram of a light receiving detector.

FIG. 5 is a cross-sectional view of a knob according to another embodiment.

[Explanation of symbols]

 1 door 1a surface plate 2 outdoor knob 3 indoor knob 3a pedestal 3b protrusion 3c contact point 4 latch bolt 4a dead bolt 5 light receiving detector 5a light receiving section 5b amplifier 5c judgment section 5d command section 5e battery 6 indicator light 7 wiring 8 frame 8 door Latch hanging

Claims (1)

[Scope of utility model registration request] 1. A detector for detecting the presence of a person near the door is mounted on one side of the door, and a notifying tool for notifying a detection command from the detector is provided on the other side, and the other side of the door is also provided. The knob provided in the switch is provided with a switch that is closed by connecting the knob to the open side.The switch serves as a switch for supplying power to the detector, and the detection operation of the detector opens the knob. A door collision prevention device characterized in that it is configured to be turned to the side.