JPS6012233Y2 - Opening alarm device for doors and hinged doors - Google Patents

Description

[Detailed description of the invention] There are devices that emit a bell or other alarm when a door or hinged door is opened to prevent theft, but with conventional devices, the sound of a bell or other alarm is low, and if you listen carefully, it may not sound. also occurs.

Also, providing a bell etc. is troublesome as the power supply and other costs are high.

In the present invention, when a bell or the like is used, it is not simply shaken long enough to cause sufficient vibration by applying a fall impact, so that a sufficient alarm function can be obtained with simple equipment.

The embodiments shown in the accompanying drawings will be explained below.

In the figure, A is a door, B is a device of the present invention, C is a pillar, and D is a wall, and when the door A is opened, the device B of the present invention is activated to emit an alarm such as a bell.

An embodiment of the device B of the present invention is shown in FIG. 2 and below.

FIG. 2 shows the state when the door is open, and FIG. 3 shows the state when the door is open. When the door A is changed from the closed state of FIG. 3 to the open state of FIG. 2, the bell 1 falls and the impact causes a strong alarm.

When door A is closed, the state shown in FIG. 3 is automatically restored.

To explain the specific structure, 2 is a case, 3 is a suspension rope of the bell 1, 4 is a rotating lever that supports one end of the suspension rope 3, and the rotating lever 4 is pivoted on the side wall of the case 2 on a pivot 5. When the door is opened or closed, it rotates to the state shown in Figures 2 and 3.

A pulley 6 is pivotally attached to the rotating lever 4.

7 is a slide bar, and 8 is a return spring. The slide bar 7 passes through the case 2, and its tip 7' faces the door A. When the door A is closed, it is pushed into the state shown in Fig. 3, and when the door is opened, the return spring 8 Due to this action, it protrudes from the case 2 as shown in FIG.

A cam 9 is rotatably fitted in a fixed position on the slider 7, and is supported in the illustrated state by a stopper 11 having a fan-shaped hem 10.

The pulley 6 on the rotating lever 4 faces the side surface of the hem 10 of the cam, and when the slide par 7 is pushed by the door A and pushed to the left from the state shown in FIG. Since it comes into contact with the periphery and is pressed, the rotating lever 4 rotates clockwise, and the pulley 6 moves around the upper edge 10 of the cam hem 10 as shown in FIG.
′ and stopped.

When the door A is slightly opened from the door opening (Fig. 3), the slider 7 will fly out to the right due to the action of the return spring 8, so the pulley 6 will come off the upper edge 10' of the cam 10, and the rotating lever 4 will move under its own weight. As a result, the bell 1 immediately rotates as shown in Figure 2, and the bell 1 suspended from the hanging rope 3 falls down with force, giving a bell alarm.

That is, in the conventional case where the bell was simply hung, the bell was long enough to ring simply due to the vibration of opening the door, but since it falls with a large stroke and vibrates shockingly, the alarm becomes louder and more reliable.

In this device, the cam 9 is rotatably fitted to the slider 7 so that it can be applied to both cases where the door opens to the right or to the left, as shown in Fig. 1 (A 9). .

In this case, if the device is turned upside down, the slider 7 will be in the opposite right-left position, and the cam hem 10 will be reversed and drooped due to gravity, so it can be adapted to either case (see FIG. 4).

It goes without saying that the hanging alarm device is not limited to bells, but can also be applied to various types of wind chimes and other devices that generate sound by vibration.

Further, in the above embodiment, the rotation lever 4 and the slider 7 are linked and controlled by the cam 9 and the pulley 6, but it is of course possible to change this to other appropriate mechanisms.

[Brief explanation of drawings]

FIG. 1A9 is an explanatory view of right- and left-opening doors to explain the application state of the device of the present invention. FIGS. 2 and 3 illustrate the door opening and operating states of the embodiment of the present invention, and in each figure, figure A is a front view of the main components, and figure 0 is a left side view. FIG. 4A-9 is a diagram illustrating the inverted arrangement of the cam and lever when the device of the present invention is inverted and applied to right- and left-opening doors. 1... Bell, 2... Case, 3...
... Hanging rope, 4... Rotating lever 5...
Pivot, 6... Pulley, 7... Slide par 8... Return spring, 9... Cam, 1
0...Hem part, 11...Stopper.

Claims (4)

[Scope of utility model registration request] (1) A rotary lever with an alarm hanging from the tip is rotatably supported on the case, and the tip of the rotary lever is rotated when the door is opened, and then lowered by its own weight when the door is opened. An opening alarm device for doors and hinged doors, characterized by a combination of a slide bar that (2) A slide bar with a protrusion facing the door, an elastic device that urges the slide bar in the protruding direction, and a tip pivoted to the case at approximately the same height as the slide bar to act as an alarm. A rotating lever with a hanging end and an interlocking mechanism between the rotating lever and the slide bar are provided, and when the door is opened, the rotating lever lifts its tip in conjunction with the pushing operation of the slide bar to open the door. The opening alarm device for doors and hinged doors according to claim 1, wherein the hanging alarm device is configured to issue an alarm by rotating and dropping its tip. (3) The door according to claim 1 or 2 of the utility model registration claim, in which a cam is provided on the slide bar as an interlocking mechanism between the rotating lever and the slide bar, and a pulley is provided on the rotating lever opposite thereto; Opening alarm device for hinged doors. (4) When the case is turned upside down, the length of the slide bar and rotation lever is reversed to the left and right, so that the door can be opened to the right or left. An opening alarm device for doors and hinged doors as described in item 2.