KR101054211B1 - Manual Hazard Warning Alarm - Google Patents

Abstract

The hand-held hazard alarm has an alarm housing, a front panel (1), a breakable element and a switch insert with an end switch (5), a switch element and an alarm knob (2). The switch element is formed by a switching block (6) connected to the alarm knob, that is for operating the end switch and that is guided in a guide (16) on the front panel.

Description

Manual Hazard-Alarm Alarm {MANUALLY OPERATED HAZARD-WARNING ALARM}

1 is a view of a switching insert member and a front panel of a manual danger-warning alarm in accordance with the present invention inside the alarm,

FIG. 2 shows the front panel in the direction of arrow II of FIG. 1,

3 shows the front panel with the printed circuit board screwed together.

※ Description of the main parts of the drawings ※

1: front panel 2: alarm button

3: spring 4: printed circuit board

5: limit switch 6: switching track

7 switching surface 8 braking protrusion

9: braking protrusion 10: braking lever

11: bushing bearing 12: free end

13: elastic component 14: common guide

15: cylindrical center 16: guide rail

17: guide rail 18: crossbar

The present invention provides a manually operated hazard-warning alarm having a switching insert with an end switch, a switching element and an alarm button, an alarm housing, a front panel and a breakable element. It is about.

Such manual danger-warning alarms, which are used in particular in danger-warning alarm systems for alerting fire departments or police, are usually produced in two forms, direct and indirectly operated. Indirect-actuated alarms are called so-called alarm-button devices. In this case, it is necessary to break the glass panel (breakable member) and pressurize the alarm button after that. The triggering element is thus an alert button. In the case of a direct-acting alarm, a so-called spring-actuated button type, the glass panel must be broken, so that the alarm button projects under the action of spring pressure. Thus, in this case, the trigger member is formed by the panel and the alarm button. In both cases, the alarm-button movement activates an electrical switch that sends an alarm message to the alarm control center in the form of an electrical signal. Here, it is very important that the manual hazard-warning alarm is always ready for a satisfactory function and reliable alarming.

EP-A-0 592 925 discloses a manual hazard-warning alarm of the type mentioned in the introduction, having a press-switch provided on a printed circuit board, which can be adjusted by an alarm switch. It is possible for the pressure-switch to be actuated by the actuating lever, which actuates the pressure-switch through the leaf spring. It is no wonder that switching inserts with actuating levers and their mountings and even leaf springs are not optimal in terms of relatively complex and cost-effective products. Furthermore, the combination of adverse conditions, for example undesirable tolerances, accumulation of dust, stress on the leaf springs, can result in it becoming difficult for such switching inserts to trigger an alarm.

Indirect-operated manual, sold under the name of CERBERUS DM1133 (registered trademark of CERBERUS-Siemens Building Technologies AG) by the applicant of the present patent application. In the above-mentioned type of danger-warning alarm, the guide for the alarm button should be designed with high precision with very small tolerances to ensure reliable operation of the limit switch when the alarm button is pressed. In operation, a small tolerance is required because the limit switch may not be triggered even by a small tilt of the alarm button. The requirement for very small tolerances to be maintained provides for the production of alarm buttons and guide composites of alarm buttons and increases the cost of a manual hazard-warning alarm.

It is an object of the present invention to provide the above mentioned manual danger-warning alarm so that the switching insert member ensures reliable alarm operation regardless of dynamic forces and production tolerances, and can optionally be used for two variants of the alarm. To improve. It is also an object of the present invention that the switching insert is optimized in terms of cost-effective production.

This object is achieved according to the invention in which the switching element is formed by a switching track coupled to an alarm button and provided for operating a limit switch and guided in a guide provided on the front panel.

The guidance of the switching track means that due to the reliable operation of the limit switch, it is no longer adversely affected by the tilting of the alarm button, and as a result, the need to meet the precision of the guide can be significantly reduced.

A first preferred embodiment of the manual danger-warning alarm according to the invention is characterized in that the switching track has a longitudinal edge which is coupled to the alarm button and surrounded by rail-shaped guides.

According to a second preferred embodiment of the manual danger-warning alarm according to the invention, the switching track is wedge or double wedge type and has a distal end which abuts the limit switch to activate the alarm button by actuating the limit switch according to the displacement of the switching track. It has a switching surface.

A third preferred embodiment of the manual danger-warning alarm according to the invention is coupled to an alarm button on the side opposite the switching track and on a guide crosspiece which is guided in a guide rail provided on the front panel. Is characterized by

The rail-shaped guides for the switching tracks and the guide rails for the guide rails preferably form a part formed from the alarm button, a common guide part which prevents the switching track and the guide rails from rotating or tilting inside.

A further preferred embodiment in which the alarm button is designed as a pushbutton in the manual danger-warning alarm according to the invention, has a braking protrusion in which the switching track is associated with the switching surface, and switching in the operating state of the alarm. A braking lever is provided that abuts the track.

The invention is explained in more detail below with reference to exemplary embodiments and figures.

The basic structure of a manual danger-warning alarm consists of a housing covered in the front direction by the front panel, a breakable member arranged on the front of the front panel, for example a glass panel, an alarm button guided to the front panel, and an alarm. And a switching insertion member arranged inside the front panel rear surface. Such structures are known in the art and will not be described in greater detail herein. In this regard, reference may be made to EP-A-0 592 925 and EP-A-1 288 881. 1 and 2 are parts of a manual danger-warning alarm according to the present invention, which are essential parts for understanding the present invention, i.e. the front panel indicated by the reference "1", the alarm button indicated by the reference "2". And only parts such as a switching insertion member (without a printed circuit board) are shown. 3 shows the front panel with the printed circuit board screwed together.

According to the drawing, the front panel 1 is box-shaped and comprises a central hole for the alarm button 2 which projects outwardly by the central spring 3. This part of the front panel 1 including the switching insert member is covered by the printed circuit board 4 (FIG. 3) in the back direction. The printed circuit board 4 is screwed to the front panel 1 and forms a stop for the spring 3. All parts with the flow current are located on the printed circuit board 4, which constitutes a cost-saving scheme. The switching insertion member essentially comprises a limit switch 5 arranged on a printed circuit board and a switching track 6 coupled to the alarm button 2. The switching track 6 is in the form of a plate which is coupled to the alarm button 2 via a narrow crossbar. Arranged on the surface in a direction different from that of the alarm button is a switching face 7 which is inclined wedge-shaped and abuts the limit switch 5 and activates the limit switch when the alarm button 2 is pressed.

Serrated braking protrusions 8 are provided at a distance from the switching face 7. In the alarm actuation state, the brake protrusion 9 of the brake lever 10 abuts the switching track 6 at the point between the switching face 7 and the brake protrusion 8. When the alarm button 2 is pressed, the brake lever 10 is pivoted a short distance and springs back along the brake projection 8 and thus in the pressurized state, ie in the alarm position the alarm button 2 As a result of braking, the braking protrusion 8 slides past the lower portion of the braking protrusion 9. The brake lever 10 has two arm shapes, which are mounted to the front panel 1 at the center of the lever, which makes the lever 10 pivotable on the stationary bushing bearing 11. The short arm of the brake lever 10 supports the brake protrusion 9, the long arm acting as the actuating arm and having a free end 12 protruding outward of the alarm. The actuating arm abuts against an adjacent side wall of the front panel 1 and is assigned an elastic component 13, such as a leaf spring, which pushes the brake protrusion 9 against the switching track 6.

Located opposite the switching track 6 in the radial direction and provided on the side of the alarm button 2 is a T-shaped guide bar 18, which is a warning button 2 and a switching track 6. ) Form a generally integral actuating and switching component. This part is guided to a common guide 14 arranged inside the front panel 1.

The guide 14 comprises a guide rail 16 for the switching track 6, a guide rail 17 for the guide cross 18, and a cylindrical center 15 acting as a guide for the alarm button 2. Each length of this guide is longer than the length of the part being guided, and even when the alarm button 2 is pressed, the alarm button 2, the switching track 6 and the guide cross 13 are each over its entire length. Guided in the guide. Since the switching track 6 is guided in the guide rail 16, the switching track 6 moves along a precisely formed path, with the result that the limit switch 5 is operated reliably in all circumstances. Furthermore, it is possible to use the limit switch 5 even in the case of having a relatively large switching displacement due to the precise moving plane of the switching track 6. Guide crossbar 18 and guide rail 17 provide precise guidance and additional protection against inclination and / or jamming of alarm button 2. As can be seen from FIG. 3, the guide rail 16 passes through the printed circuit board 4 at its free end and is fixed in the corresponding passage of the printed circuit board.

As already mentioned in the introduction, the alarm button and spring-actuated button designs of the manual hazard-warning alarms are known. The illustrated alarm is an alarm-button design for indirect operation. In order to trigger the alarm, it is first necessary to break the glass panel covering the alarm button 2 protruding out of the front panel 1, and then pressurize the alarm button 2. The alarm button 2 here actuates the limit switch 5 via the switching track 6 and is fixed in this position by the brake lever 10. In order to release the alarm button 2, the free end 12 of the brake lever 10 must be pivoted in the direction of the arrow marked A, so that the brake protrusion 9 releases the switching track 6 and the spring ( 3) switches the alarm button 2 back to the operating position.

The illustrated manual hazard warning alarm can also be used in some modifications, such as an alarm designed as a spring-operated button for direct acting. In this case, since the limit switch operates when it protrudes outward rather than when the alarm button is pressed, the brake lever 10 is removed and the alarm button 2 is suitable for direct operation and switching on the switching track 6. The different shape of the face is replaced by the button which is essentially different from the alarm button 2 for indirect operation.

The present invention improves the above mentioned manual hazard-warning alarm so that the switching insert member ensures reliable alarm operation regardless of the dynamic forces and production tolerances, and can be used selectively for two variants of the alarm. Advantages in terms of effectiveness and cost-effective production for the switching insert member.

Claims (10)

In a manual danger-warning alarm having an alarm housing, a front panel 1, a breakable member and a switching insert member having a limit switch 5, a switching element and an alarm button 2, The switching element 6 is connected to the alarm button 2 and is provided to actuate the limit switch 5 and guided in a guide 16 provided on the front panel 1. 6. It is formed by), Manual danger-warning alarm. The method of claim 1, The switching track 6 is characterized in that it has a longitudinal edge coupled to the alarm button 2 and designed in the shape of a crosspiece and surrounded by a rail-shaped guide 16. Manual danger-warning alarm. The method of claim 2, The switching track 6 is in the form of a wedge or double wedge and has a base that abuts on the limit switch 5, and the limit depends on the displacement of the switching track 6 and the displacement of the alert button 2 accordingly. Characterized in that it has a switching face 7, which actuates the switch 5, Manual danger-warning alarm. The method of claim 3, wherein Comprising a guide crossbar 18 which is engaged in the guide rail 17 provided on the front panel 1 in combination with the alarm button 2 on the side located opposite the switching track 6. Characterized by Manual danger-warning alarm. The method of claim 4, wherein The rail-shaped guide 16 for the switching track 6 and the guide rail 17 for the guide crossbar 18 form a common guide 14 and the alarm in the common guide 14. The part formed from the button 2, the switching track 6 and the guide crossbar 18 is characterized in that it is guided so that it cannot be rotated or tilted, Manual danger-warning alarm. 6. The method according to any one of claims 1 to 5, A printed circuit board (4) screwed to the front panel (1), wherein all current-carrying components are fixed on the printed circuit board (4) and the printed circuit board (4) Characterized in that it serves as a stop for the spring (3) acting on the alarm button (2), Manual danger-warning alarm. The method of claim 5, If the alarm button 2 is designed as a push button, the switching track 6 has a braking protrusion 8 which is aligned with the switching face 7 and the switching track 6 in the operating state of the alarm. Characterized in that a brake lever 10 is provided that abuts against the Manual danger-warning alarm. The method of claim 7, wherein The brake lever 10 is designed as two arm pivot levers 10, and when the alarm button 2 is pressed at the free end of one arm against the switching track 6, the brake protrusion 10 It is characterized in that it has a braking protrusion 9 for latching the alarm button 2 at the position latched on the back of 8) and operating the limit switch 5, Manual danger-warning alarm. The method of claim 8, The other arm of the brake lever 10 protrudes laterally from the housing of the alarm at the free end 12 of the arm, Manual danger-warning alarm. The method of claim 9, Characterized in that it comprises an elastic member 13 which is assigned to the brake lever 10 and acts on the brake lever 10 so that the brake protrusion 9 is pressed against the switching track 6. Manual danger-warning alarm.

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