JP2006348722A - Lowermost step indicating device for staircase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for preventing an accident of stepping off the stairs, which happens when going down the stairs holding things in hands and being unable to look ahead, especially in the most dangerous case when it is hard to judge whether there is another step or not before the last step. <P>SOLUTION: Switches are provided in treads of the bottom stair of the staircase and another two steps above it. When descending the stairs, the weight is applied in order from the upper stair, the middle stair to the lowest stair while the switch on each stair is closed by the weight and a circuit for a buzzer, a speaker and a lamp, which is composed serially in each stair, is open after a certain period of time. The buzzer sounds differently on each tread of the stairs, so that the position on the upper, the middle or the lowermost step can be located. At the same time, a panel light having a different luminescent color depending on the stair case location is lighted up, and thus the person descending the stairs listens to the buzzer and looks at the panel light so as to judge on which tread from the last one of the stairs he/she is stepping on then. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention mainly relates to an apparatus capable of displaying the lowest step of a general household staircase.

  Conventionally, a large number of inventions or devices relating to prevention of accidents such as stepping off mainly on domestic stairs have been proposed. Applications for handrails for stairs by cause. (Japanese Patent Publication No. 07-173915) (Japanese Patent Laid-Open No. 2003-321180) or an application (Japanese Patent Laid-Open No. 2005-146747) related to lighting of a stair tread.

Each of the above background arts is a method or apparatus for confirming safety by touch or vision. On the other hand, elderly people with weak eyesight, sick people with weak physical strength, or people who go down the stairs with objects that can not be seen below are not eligible, and most consideration is given to the risk of accidents such as stepping off the stairs. Was not.
The present invention is intended to solve the problem of preventing accidents caused by stepping off on stairs as one of the safer means mainly of hearing that is not considered in the background art.

  In order to solve the above problems, the present invention provides a lower step, a step above it, a step above it, and a step plate of about three steps (hereinafter referred to as a lower step group step plate, the lowest step, middle step, upper step). In each case, an open / close switch that closes the contact when pressed and opens the contact when the pressing force is removed is inserted in series in the operation circuit of the upper buzzer, the upper indicator lamp, and the upper delay operation relay. . When the weight is added to the upper stepping plate of the lower stepping plate when descending the stairs, the open / close switch provided on the upper stepping plate is closed, and the upper stage buzzer sounds, the upper indicator lamp lights up, and the upper stage delay operation relay operates. When the open / close switch provided on the upper tread is closed, the upper buzzer sounds and the upper indicator light is turned on. Since the upper delay operation relay operates after a time lag of about 1 second (the time setting is arbitrary), when the upper delay operation relay operates, the upper buzzer stops ringing and the upper display lamp is turned off. The tone of the upper buzzer and the color of the upper indicator light are not the same tone and color in order to facilitate different recognition of the lower group footboard.

As mentioned above, when descending the stairs, the bottom level can be predicted from the color of the tone and the indicator from a few steps before reaching the bottom level, and people with disabilities and elderly people feel afraid when descending the stairs. It can give a great sense of security to those who have.
Moreover, even if the lighting of the indicator lamp is not visible, it is possible to detect that there is a person descending the stairs by listening to the alarm sound, and it is possible to avoid a collision injury with other people.

A feature of the present invention is the buzzer sound and tone color provided for each stepping plate. After descending the stairs, the weight is applied to the upper stepping plate of the lower group stepping plate, the upper step switch comes into contact, and the upper step buzzer sounds. If the timbre in this case is assumed to be 'A', and the weight shifts to the next middle tread, the timbre becomes the 'B' timbre set for the middle tier. If the lower stage is further shifted, the timbre becomes the 'C' timbre set for the lower stage. In this way, if the tone color is determined and well-known for each step, it is possible to recognize which stepping plate is being stepped only by listening to the buzzer sound when descending. Basically, a buzzer sound is used. However, since it is a continuous sound of A sound, B sound, and C sound, it may be a button press sound “pip” or “pip”. "Pip""Pip""Pawn" etc. are more familiar when used for countdown with familiar sounds.
Changing the color of the indicator lamp is the same reason as in the case of the buzzer sound. Specifically, as with the traffic signal at the road intersection, when you step on the upper step board of the lower group step board, when you step on the middle step board next to 'blue', 'yellow' next to 'red', this is also generally familiar By selecting colors, it is effective in preventing care mistakes such as misunderstandings and misunderstandings.

Hereinafter, an embodiment will be described with reference to the drawings (circuit diagrams). Now, when the descender gets down the stairs and steps on the upper stepping plate of the lower group stepping plate, the upper stepping plate switches (1A, 1A ′) provided on the upper stepping plate are closed by pressing. (When the pressing force is lost, the upper step board switch (1A, 1A ') is restored and opened.) By the upper step board switch (1A, 1A'),
Power supply terminal (b)-3B relay contact (3b ")-Upper step switch (1A ')-Upper delay operation relay (1B)-Upper indicator (L1)-Upper buzzer (BZ1)-Upper step switch ( 1A)-Power supply terminal (A)
The operation of the upper delay operation relay (1B) is started. Upper display lamp (L1) is lit. Upper buzzer (BZ1) sounds. The upper delay operation relay (1B) is delayed by about 1 second due to the delay coil (name is not given), and the time for closing the 1B relay contact (1b) is also delayed by about 1 second. When the 1B relay contact (1b) is closed, the operations of the upper display lamp (L1) and the upper buzzer (BZ1) are released. In other words, the lighting time of the upper display lamp (L1) and the ringing time of the upper buzzer (BZ1) are the time from the contact of the upper step switch (1A, 1A ′) to the closing of the 1B relay contact (1b). is there. After this, the upper delay operation relay (1B) continues to operate with its own contacts (1b, 1b ′) as self-holding contacts.
The operating time of the upper indicator light (L1) and the upper buzzer (BZ1) is set to around 1 second because the descender moves to the next middle stepping plate in a short time while the descender continues descending. This is to prevent malfunction of the electric circuit when there is a trouble in the sequence operation or when the upper step board switch (1A ′) repeats an unstable operation due to an external force.
The above is a series of sequence operations, and only the same operation is repeated for each stage.
The same applies to the sequence in the lowest stage, but if the circuit state up to the previous stage is checked, the delay operation relay continues to operate in each sequence circuit with its own contact as a self-holding contact. For this reason, the power supply of all circuits is shut off by the 3B relay contact (3b ″) at the same time when the lowest delay operation relay (3B) is operated.

  On the other hand, the sequence for ascending the staircase is such that the delay operation relay (3B), the indicator lamp (L3), and the buzzer (BZ3) are connected even if gravity is applied to the bottom tread switch (3A, 3A '). Since one switch for each delay operation relay is inserted in series, the lowermost sequence does not proceed unless all the delay operation relays are operating.

Electric circuit sequence diagram of the present invention

Brief description of symbols

1B Upper delay operation relay 2B Middle delay operation relay 3B Lower delay operation relay 1A1A'1A "Upper step switch 2A2A'2A" Middle step switch 3A3A'3A "Lower step switch 1b1b'1b" 1B relay contact 2b2b'2b " 2B relay contact 3b3b'3b "3B relay contact Bz1 Upper buzzer Bz2 Middle buzzer Bz3 Lower buzzer L1 Upper indicator L2 Middle indicator B L3 Lower indicator

Claims (2)

1. A switch that comes into contact with the bottom tread of the staircase only when pressed is provided. The switch is inserted in series in an electric circuit in which a buzzer, a speaker, a lamp, and a delay operation relay are connected in series. As a part of the circuit configuration that has the role of controlling the utterance of and the blinking of the lamp,
2. A similar switch is provided on the tread plate that is one step higher than the bottom to form a similar electrical circuit.
3. The third stepping plate from the bottom above the first step is configured to have the same form as the bottom step and the second step from the bottom,
4). The lowermost electrical circuit is provided with a switch that cuts off the power supply of the entire device.
5. The buzzer, speaker, and lamp are provided near the stairs.
A lowermost display device for stairs having the above-described configuration. 1. 2. The lowermost display device for a staircase according to claim 1, wherein the buzzer sound is a different tone color for each staircase, and the emission color of the lamp is a different emission color for each staircase.

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