JP3048949B2 - A latch confirmation device that detects signals from the triple ladder that is simultaneously extended. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the use of a triple ladder mainly in the event of a fire, police or other disaster, and for the use of a triple ladder when the vertical extension of the ladder body is adjusted and when the latch is properly operated. The present invention relates to a device for confirming whether a ladder is locked or not.

[0002]

2. Description of the Related Art As a ladder maker, the applicant applied for utility model registration Nos. 3013080 and 3024686. The ladder body was put into practical use as a speeded-up ladder body in which a triple ladder was simultaneously moved up and down by rope operation. I have. A lock mechanism of a ladder body latch which locks a conventional ladder up to a certain height and locks the ladder has been proposed by the applicant and the like, and a triple ladder is shown in FIGS. The first and second ladders T1 and T2 are fixed with the latching devices 10 and 10, and the rope R, the pulley K, the hoisting drum D, the second ladder T2, and the first ladder T1 and the second ladder T2. 3 ladders T
3, a rope R2 and a pulley K are provided. As for the latching device, a latching spring 14 and a return spring 13 are provided in a box 11 of a latching device 10 shown in FIG. And the holding bracket 15, and the second ladder T2 and the third ladder T2 are provided above the first ladder T1 by a rope operation from the ground.
When the ladder T3 is simultaneously moved upward to extend the height of the ladder, and when the height is determined, as shown in FIG. 11, the support of the ladder body T2 is placed on the latch 14 of the latch device 10 fixed to the ladder. The height position of the connecting ladder was determined by hanging the rod 16. In this case, the box is mounted at a height of about 3 m from the ground, so when extending and connecting the triple ladder, visually check from the ground and hook the ladder body's rod to the receiving part of the latch. I was checking with a rattling sound. However, in emergency situations such as firefighting and police, it may not be possible to confirm whether the ladder has been securely locked and fixed by the noise of the surroundings in emergency situations. There has been a need for a technical improvement in the means of securing the ladder securely.

[0003]

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to connect a three-ladder ladder in an emergency by vertically moving the ladder body in an emergency. As a means for the operator to check, in view of the fact that there are many fires at night, etc., visual and audible judgment using sound (buzzer) and light (illumination) together is immediately judged by means of a signal detection device, and The task to be solved was to confirm the safety and the certainty of the mechanism operation.

[0004]

As means for achieving the above object, a signal detecting means attached to a latch and a lamp and a buzzer device connected to the signal detecting means are installed on a ladder body. When the support rod moves upward and locks on the latch of the latch that protrudes from the opening of the box for a certain period of time, the signal detection device is activated, the buzzer is activated, and the illumination is turned on, and the ladder is latched. The gist of the present invention is to confirm that the vehicle is stopped, and that the lamp is turned on for a certain period of time when the power is exhausted to notify the outside of the replacement of the power supply battery.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of the present invention; FIG. In FIG. 1, reference numerals 1 and 1 denote a locking confirmation device mounted on the upper part (front) of the first ladder T1.
FIG. 2 shows a side view of FIG. FIG. 3 to FIG. 6 are enlarged views of respective main parts. As shown in FIGS. 1 to 6, the hook confirming device 1 is installed on the hooking device 10 on the right side of the drawing of the hooking device 10 mounted on the left and right sides of the ladder body (or on the left side). Vertical rods 17, 1 provided with horizontal rods 19 of one ladder T1
When the ladder body is extended by being attached between the mounting members 18, 18 stretched between 7, the support rod 16 of the second ladder T 2 is received in the receiving portion of the latch 14 provided on the box 11 of the latch device. Is provided for instantaneously checking whether or not the signal has been received and supported, and includes a signal detection unit 2 and a signal notification unit 3 to be described later.

FIG. 3 is an enlarged view of FIG. 1 and FIG.
Referring to FIG. 6, the signal detection unit 2 has an actuator 4 fixed to an upper part of a latch 14 of a latch device 10, a protruding piece 4a protruding from a lower side, and a coil spring 4b.
To stop. 4c is a fastening part. Reference numeral 5 denotes a micro switch, which has a switch button 5a and a contact (roller) 5 on the upper surface.
(b) is attached, and the projecting piece (4) of the actuator is moved according to the swing of the latch (14) pivotally supported on the box.
a is brought into contact with the contact 5b of the microswitch 5 to activate the switch. The microswitch 5 is connected to the signal notification unit 3 provided between the vertical rods 17 on the side of the ladder body in FIG. The signal notification unit 3 mounts a signal lamp 9 including a blinking lamp 6 formed of a light emitting diode, a printed board 7 provided with a buzzer 21, and a battery 8 contained in a cushion material 8 a to a mounting member 18 of a vertical rod 17.

[0007]

Next, the operation of the present invention will be described. FIG. 7 is a block diagram of the latching confirmation operation, which comprises a signal detection unit 2 and a signal notification unit 3. The signal detection unit 2 includes an actuator 4 and a microswitch 5 attached below the actuator 4. Control unit 20 mounted on printed circuit board
A light emitting diode and a confirmation signal by a buzzer sound and an advance notice signal for announcing replacement due to exhaustion of the power supply through a detection control circuit by an IC are used for the advance notice lighting by the light emitting diode. That is, when the support rod of the second ladder is hooked and locked to the receiving portion of the latch attached to the support rod of the first ladder by the upward movement of the second ladder and the third ladder of the triple ladder described above. If the protrusion of the actuator fixed to the latch by the pressing force of the rod contacts the micro switch for 0.7 seconds or more, the detection control unit 20
, The lamp of the light emitting diode of the confirmation signal blinks at intervals of about 0.5 seconds for 10 seconds, and the buzzer sounds. When the battery is exhausted and the replacement time has come, the lamp illumination by the light emitting diode is performed for about 48 hours to 72 hours or more for about 1 hour.
Blinks every second and gives notice of battery replacement by lighting. In this case, no buzzer sounds. The notice signal is used in cooperation with the confirmation signal. The time (number of seconds) for latching and locking to the receiving portion of the latch by the upward movement of the ladder body and the time for lighting, blinking, buzzing, etc. of the lamp are appropriately designed and changed according to the embodiment.

[0008]

As described above, according to the present invention, in the event of an emergency, the triple ladder is simultaneously moved up to speed up the installation of the ladder body, and at the same time, the mechanism of the triple ladder and the reliability of the assembling function are used in combination. In order to ensure accuracy, not only the ladder body operator but also anybody around, especially at night, can easily check the signal confirmation signal and the warning signal with both eyes and ears by lighting and buzzer sounding This is a confirmation device that can be used, and its operation and effect are extremely effective and remarkable.

[Brief description of the drawings]

FIG. 1 is a hanging confirmation device of the present invention mounted on an upper part (front) of a first ladder.

FIG. 2 is a right side view of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 1;

FIG. 4 is a main part diagram showing only a right side surface of FIG. 3;

FIG. 5 is an overall view showing an enlargement of FIG. 2;

FIG. 6 is a cross-sectional view of the locking confirmation device as viewed from the lower side of the triple;

FIG. 7 is a block diagram showing the operation of the present invention.

FIG. 8 is a ladder mounting diagram of a conventional latch device.

FIG. 9 is an overall view of a conventional triple ladder.

FIG. 10 is a scale diagram of FIG. 9;

FIG. 11 is a side view of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hook confirmation device 2 Signal detection part 3 Signal notification part 4 Actuator 4a Protrusion piece 5 Micro switch 5a Switch button 5b Contact 5c Spring contact piece 6 Illumination lamp 7 Printed circuit board 8 Battery 9 Signal box 10 Hook device 11 Hook Box of metal fittings 12 Pressing spring 13 Return spring 14 Latching metal 15 Holding metal 16 Supporting rod 17 Vertical rod 18 Mounting member 19 Horizontal rod 20 Detection control unit 21 Buzzer T1 First ladder T2 Second ladder T3 Third ladder c code

Claims (1)

(57) [Claims] 1. A rectangular box having a U-shaped cross-section and a pressing spring and a return spring fixed to the box and curved in the direction of the opening and pivotally mounted in the box. The pressing spring presses the front end of the latch from the opening of the box, and the holding bracket pivotally attaches to the inside of the box and hangs down from the upper part of the box in a curved manner. The latch device is configured as a triple ladder attached to the first ladder, and when the ladder body moves upward, the latch fitting protruding from the opening of the box via the support rod of the ladder body and the holding fixture is attached to the box. When the support rod of the ladder body that is pressed down and moved upwards is hooked on the hook portion of the latch fitting projecting from the opening of the box, the holding fitting hangs down to the outside of the support rod. In the hooking device for a triple ladder which is provided at the same time, A signal detection unit which is attached to the fastener,
And a signal detection device consisting of a signal notification unit consisting of a lamp and a buzzer device connected thereto and a notice lighting unit cooperating with the confirmation signal is installed on the ladder body, and the ladder body moves upward and the support rod opens the box. When the hook is engaged for a certain time on the hook of the hook that protrudes from the part, the lamp of the signal notification unit connected to the signal detection unit provided in the hook device lights up for a certain time, and the buzzer sounds intermittently A locking confirmation device by detecting a signal of a triple ladder that simultaneously feeds out, provided with a confirmation signal.