EP2553669A1 - A reset mechanism for a manual alarm device and a manual alarm device with the same - Google Patents

A reset mechanism for a manual alarm device and a manual alarm device with the same

Info

Publication number
EP2553669A1
EP2553669A1 EP11713206A EP11713206A EP2553669A1 EP 2553669 A1 EP2553669 A1 EP 2553669A1 EP 11713206 A EP11713206 A EP 11713206A EP 11713206 A EP11713206 A EP 11713206A EP 2553669 A1 EP2553669 A1 EP 2553669A1
Authority
EP
European Patent Office
Prior art keywords
reset
alarm device
base
upper cover
manual alarm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11713206A
Other languages
German (de)
French (fr)
Other versions
EP2553669B1 (en
Inventor
Yong BU
Chang Lin Sun
Zhi Jie Shi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Schweiz AG
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2553669A1 publication Critical patent/EP2553669A1/en
Application granted granted Critical
Publication of EP2553669B1 publication Critical patent/EP2553669B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/12—Manually actuated calamity alarm transmitting arrangements emergency non-personal manually actuated alarm, activators, e.g. details of alarm push buttons mounted on an infrastructure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/285—Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool

Definitions

  • a reset mechanism for a manual alarm device and a manual alarm device with the same
  • the present invention relates to a reset mechanism for a manual alarm device and, in particular, to a reset mechanism for a manual alarm device with reset protection functions; and the present invention also relates to a manual alarm device with the above reset mechanism.
  • Manual alarm devices are a category of alarm devices commonly used for fire and other dangerous situations, for example, when a fire occurs, an operator presses an operating element of a manual alarm device to sound an alarm
  • Alarm devices can be divided into disposable manual alarm devices and reusable manual alarm devices.
  • the former ones are not provided with a reset mechanism, so they have relatively high costs and are not easily serviceable; and the latter ones have reset mechanisms, and after sounding an alarm an operator can activate the reset mechanism to return the manual alarm device to the original monitoring state.
  • a reset mechanism for a manual fire alarm button which reset mechanism comprises an internal shaft, a shaft bushing and a thumbwheel concentrically sleeved together, is disclosed and in the device the inner shaft can be turned to reset the operating panel by inserting a general-use tool, such as, a screw driver, a nail clipper, etc., into a tool groove.
  • a general-use tool such as, a screw driver, a nail clipper, etc.
  • manual alarm devices have to use a specific mechanism to reset, and therefore this kind of reset method cannot satisfy the relevant standards properly.
  • the other kind of reset method uses a mechanical drive mechanism to achieve the reset of an alarm device indirectly, but such a reset mechanism generally has a complicated structure and relatively high manufacturing costs.
  • One object of the present invention is to provide a reset mechanism for a manual alarm device, the reset mechanism comprising a reset key to ensure that the manual alarm mechanism can achieve the reset only when this special reset key is inserted therein, and the reset mechanism is simple in structure and low in costs.
  • the present invention provides a reset mechanism for a manual alarm device comprising a base with a bottom face and an upper cover which can cover the base, and the base and the upper cover can be viewed as the outer shell of the manual alarm device, said reset mechanism comprises: a reset key with an insertion part thereon; an upper insertion aperture disposed on the upper cover for the reset key to be inserted therein; a base insertion aperture disposed on the base for the reset key to be inserted therein; a stop block connected pivotably onto the base, which stop block can pivot about a shaft which is parallel with the base; and a pair of locking elements disposed on the upper cover which can clamp the stop block and can be pushed by the reset key to release the stop block clamped thereby.
  • the locking elements are elastic elements which have a cantilever structure.
  • the insertion part of the reset key is formed by two columns parallel with each other, and here two upper cover insertion apertures can also be provided in a way adapted to the cross- sectional shape of the two columns in the reset key.
  • a manual alarm device which comprises a base with a bottom face, an upper cover which can cover the base, an operating element disposed in the
  • a base insertion aperture is disposed on the base for the reset key to be inserted therein; an upper cover insert is disposed on the upper cover for the reset key to be inserted therein; a stop block is connected pivotably to the base, which stop block can pivot about a shaft which is parallel with the base; and a pair of locking elements are disposed on the upper cover, which locking elements can clamp the stop block and the reset key can push the locking
  • the locking elements are elastic elements which have a cantilever structure.
  • the insertion part of the reset key is formed by two columns parallel with each other, and here two upper cover insertion apertures can also be provided in a way adapted to the cross-sectional shape of the two columns in the reset key.
  • the reset mechanism for the manual alarm device is simple in structure and low in costs, and there is no need for any further mechanical drive device, thus saving manufacturing costs.
  • Fig. 1 is an exploded perspective view for illustrating a reset mechanism for a manual alarm device of the present invention
  • Fig. 2 is an enlarged partial cross-sectional view after the assembly of all the parts shown in Fig. 1;
  • Figs. 3 and 4 illustrate the case when a reset key is inserted .
  • Fig. 1 shows a main structure of a manual alarm device, which comprises a base 10 with a bottom face 14 (as shown in Fig. 2), an operating element 40 and an upper cover 60.
  • a circuit panel for which an alarm is to be made is disposed in the base 10 (not shown in the figure)
  • the upper cover 60 can be disposed to cover the base 10
  • the operating element 40 and other parts of the manual alarm device are disposed in a receiving space 80 formed by the upper cover 60 and the base 10.
  • the alarm device is normally in the monitoring state, and when a dangerous situation occurs, an operator presses the operating element 40 along the pressing direction shown in Fig. 1, making the operating element 40 move along the alarm direction, so as to sound an alarm; and after the dangerous situation has ended, if it needs to reset the alarm device, an insertion part 72 of a reset key 70 can enter along the reset direction shown in the figure into the receiving space 80 through the upper cover insertion aperture 62 and the base insertion aperture 12, so as to push the operating element 40 back to the original position (with the detailed process being described below) .
  • Fig. 2 shows an enlarged partial cross-sectional
  • a stop block 13 is disposed on the base 10, with the stop block 13 being connected pivotably to the base 10 and pivotably about its pivoting shaft (not shown in the figure) which is parallel with the bottom face 14.
  • a pair of locking elements 63 are disposed on the upper cover 60, and when the reset key is not inserted therein, the locking elements 63 clamp the stop block 13, making it unmovable.
  • the base 10 has the base insertion aperture 12 disposed thereon, and after the reset key 70 is inserted therein through the upper cover insertion aperture (not shown in the figure) and the base insertion aperture 12, the reset key 70 pushes the locking elements 63 along the arrow direction shown in Fig. 2 away to the two sides, so as to release the clamping of the stop block 13 by the locking elements 63.
  • the stop block 13 can pivot about its pivoting shaft, leaving a space for the reset key to be inserted therein to facilitate the reset key in continuing to move forward until pushing the operating element 40 to reset.
  • the stop block 13 is clamped by the locking elements 63 and is not movable, and accordingly, when any object other than the reset key is inserted therein, this other object will not be able to pass the stop block 13 so as to push the operating element 40.
  • the locking elements 63 can be cantilevers with elasticity.
  • the width of the insertion part 72 of the reset key 70 is adapted to the installation
  • the reset key can have a
  • the upper cover insertion aperture 62 can also have the shape which is adapted thereto.
  • the reset mechanisms for a manual alarm device Described above in detail are the reset mechanisms for a manual alarm device, and since the cases of employing the abovementioned reset mechanisms for manual alarm devices correspond to the contents mentioned above, they will not be described redundantly one by one.
  • the manual alarm device of the present invention ensures that only a specific tool can reset the operating element by way of the cooperation between the locking elements and the stop block, and this increases the safety factor of the manual alarm device and is in conformity with the requirements of the relevant standards.
  • the reset key protection device for the manual alarm device is simple in structure and low in costs, and there is no need to fit a mechanical drive device, thus saving manufacturing costs .

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)

Abstract

The present invention provides a reset mechanism for a manual alarm device comprising a base with a bottom face and an upper cover capable of covering the base, and said reset mechanism comprises: a reset key with an insertion part thereon; an upper cover insertion aperture disposed on the upper cover for the reset key to be inserted therein; a base insertion aperture disposed on the base for the reset key to be inserted therein; a stop block connected pivotably to the base which can pivot about a shaft parallel with the bottom face; and a pair of locking elements disposed on the upper cover which pair of locking elements can clamp the stop block and can be pushed by the reset key to release the clamped stop block. The present invention provides a manual alarm device using the reset mechanism. The reset mechanism for a manual alarm device is simple in structure, low in costs and capable of greatly improving the reset operating safety of the manual alarm device by way of cooperation between the locking elements and the stop block.

Description

Description
A reset mechanism for a manual alarm device and a manual alarm device with the same
Technical field
The present invention relates to a reset mechanism for a manual alarm device and, in particular, to a reset mechanism for a manual alarm device with reset protection functions; and the present invention also relates to a manual alarm device with the above reset mechanism.
Background art
Manual alarm devices are a category of alarm devices commonly used for fire and other dangerous situations, for example, when a fire occurs, an operator presses an operating element of a manual alarm device to sound an alarm
immediately. Alarm devices can be divided into disposable manual alarm devices and reusable manual alarm devices. The former ones are not provided with a reset mechanism, so they have relatively high costs and are not easily serviceable; and the latter ones have reset mechanisms, and after sounding an alarm an operator can activate the reset mechanism to return the manual alarm device to the original monitoring state.
Currently, the reset mechanisms are mainly divided into two categories: one of them uses a reset tool to make an operating panel reset directly, and since this category of solution is simple in structure and low in cost, it has got wider applications. For example, in the Chinese patent
200956321Y a reset mechanism for a manual fire alarm button, which reset mechanism comprises an internal shaft, a shaft bushing and a thumbwheel concentrically sleeved together, is disclosed and in the device the inner shaft can be turned to reset the operating panel by inserting a general-use tool, such as, a screw driver, a nail clipper, etc., into a tool groove. However, according to the provisions of Chinese National Standards GB19880-2005 and European Standards EN54- 11, manual alarm devices have to use a specific mechanism to reset, and therefore this kind of reset method cannot satisfy the relevant standards properly. The other kind of reset method uses a mechanical drive mechanism to achieve the reset of an alarm device indirectly, but such a reset mechanism generally has a complicated structure and relatively high manufacturing costs. Contents of the invention
One object of the present invention is to provide a reset mechanism for a manual alarm device, the reset mechanism comprising a reset key to ensure that the manual alarm mechanism can achieve the reset only when this special reset key is inserted therein, and the reset mechanism is simple in structure and low in costs.
Another object of the present invention is to provide a manual alarm device which utilizes the reset mechanism of the present invention, the manual alarm mechanism can achieve the reset only when this special reset key is inserted therein, and the reset mechanism is simple in structure and low in costs . In order to achieve the above objects, the present invention provides a reset mechanism for a manual alarm device comprising a base with a bottom face and an upper cover which can cover the base, and the base and the upper cover can be viewed as the outer shell of the manual alarm device, said reset mechanism comprises: a reset key with an insertion part thereon; an upper insertion aperture disposed on the upper cover for the reset key to be inserted therein; a base insertion aperture disposed on the base for the reset key to be inserted therein; a stop block connected pivotably onto the base, which stop block can pivot about a shaft which is parallel with the base; and a pair of locking elements disposed on the upper cover which can clamp the stop block and can be pushed by the reset key to release the stop block clamped thereby.
In another particular embodiment of the reset mechanism for a manual alarm device, the locking elements are elastic elements which have a cantilever structure.
In yet another particular embodiment of the reset
mechanism for a manual alarm device of the present invention, the insertion part of the reset key is formed by two columns parallel with each other, and here two upper cover insertion apertures can also be provided in a way adapted to the cross- sectional shape of the two columns in the reset key.
In the present invention, a manual alarm device which comprises a base with a bottom face, an upper cover which can cover the base, an operating element disposed in the
receiving space formed by the base and the upper cover, and a reset key insertable into the receiving space through the upper cover and the base for pushing the operating element to reset is provided. A base insertion aperture is disposed on the base for the reset key to be inserted therein; an upper cover insert is disposed on the upper cover for the reset key to be inserted therein; a stop block is connected pivotably to the base, which stop block can pivot about a shaft which is parallel with the base; and a pair of locking elements are disposed on the upper cover, which locking elements can clamp the stop block and the reset key can push the locking
elements to release the stop block clamped thereby. In another particular embodiment of the manual alarm device of the present invention, the locking elements are elastic elements which have a cantilever structure.
In yet another particular embodiment of the manual alarm device of the present invention, the insertion part of the reset key is formed by two columns parallel with each other, and here two upper cover insertion apertures can also be provided in a way adapted to the cross-sectional shape of the two columns in the reset key.
By way of the cooperation between the locking elements and the stop block, etc., it can prevent objects other than the reset key from pushing the operating element to reset, and this increases the safety factor of the manual alarm device. Furthermore, the reset mechanism for the manual alarm device is simple in structure and low in costs, and there is no need for any further mechanical drive device, thus saving manufacturing costs.
Brief description of accompanying drawings
The following drawings are only intended for illustrative description and explanation of the present invention, without limiting the scope of the present invention. In the drawings:
Fig. 1 is an exploded perspective view for illustrating a reset mechanism for a manual alarm device of the present invention ;
Fig. 2 is an enlarged partial cross-sectional view after the assembly of all the parts shown in Fig. 1; and
Figs. 3 and 4 illustrate the case when a reset key is inserted .
Description of the symbols:
10: base 12: base insertion aperture 13: stop block 14: bottom face
60 : upper cover 62 : upper cover insertion aperture 63: locking element
40: operating element 70: reset key
72: insertion part 80: receiving space
Exemplary embodiments
For the sake of understanding more clearly the technical features, objects and effects of the present invention, a particular embodiment of the present invention is now
described with reference to the accompanying drawings. In which, the same parts use the same symbols. Fig. 1 shows a main structure of a manual alarm device, which comprises a base 10 with a bottom face 14 (as shown in Fig. 2), an operating element 40 and an upper cover 60. A circuit panel for which an alarm is to be made is disposed in the base 10 (not shown in the figure) , the upper cover 60 can be disposed to cover the base 10, and the operating element 40 and other parts of the manual alarm device are disposed in a receiving space 80 formed by the upper cover 60 and the base 10.
The alarm device is normally in the monitoring state, and when a dangerous situation occurs, an operator presses the operating element 40 along the pressing direction shown in Fig. 1, making the operating element 40 move along the alarm direction, so as to sound an alarm; and after the dangerous situation has ended, if it needs to reset the alarm device, an insertion part 72 of a reset key 70 can enter along the reset direction shown in the figure into the receiving space 80 through the upper cover insertion aperture 62 and the base insertion aperture 12, so as to push the operating element 40 back to the original position (with the detailed process being described below) .
Fig. 2 shows an enlarged partial cross-sectional
schematic view after the assembly of the manual alarm device shown in Fig. 1, in which it only shows the portion relevant for the reset key to be inserted therein. As shown in the figure, a stop block 13 is disposed on the base 10, with the stop block 13 being connected pivotably to the base 10 and pivotably about its pivoting shaft (not shown in the figure) which is parallel with the bottom face 14. A pair of locking elements 63 are disposed on the upper cover 60, and when the reset key is not inserted therein, the locking elements 63 clamp the stop block 13, making it unmovable.
Referring to Fig. 3, the base 10 has the base insertion aperture 12 disposed thereon, and after the reset key 70 is inserted therein through the upper cover insertion aperture (not shown in the figure) and the base insertion aperture 12, the reset key 70 pushes the locking elements 63 along the arrow direction shown in Fig. 2 away to the two sides, so as to release the clamping of the stop block 13 by the locking elements 63. In this way, as shown in Fig. 4, the stop block 13 can pivot about its pivoting shaft, leaving a space for the reset key to be inserted therein to facilitate the reset key in continuing to move forward until pushing the operating element 40 to reset. Under normal circumstances, the stop block 13 is clamped by the locking elements 63 and is not movable, and accordingly, when any object other than the reset key is inserted therein, this other object will not be able to pass the stop block 13 so as to push the operating element 40.
In another particular embodiment of the reset mechanism for a manual alarm device, the locking elements 63 can be cantilevers with elasticity. The width of the insertion part 72 of the reset key 70 is adapted to the installation
distance between the two locking elements 63 such that, after the reset key 70 is inserted therein, the locking elements 63 will be pressed and pushed to make them leave the
abovementioned restricted position. After the reset key 70 is withdrawn, the locking elements 63 are no longer subject to the pushing of the reset key 70, and due to the action of their own elasticity, the locking elements 63 will return to the initial restricted position.
In another particular embodiment of the reset mechanism for a manual alarm device, the reset key can have a
relatively wide insertion part, as shown in Fig. 1, by using two columns parallel with each other. If the insertion parts 72 of the reset key are two columns parallel with each other, then the upper cover insertion aperture 62 can also have the shape which is adapted thereto.
Described above in detail are the reset mechanisms for a manual alarm device, and since the cases of employing the abovementioned reset mechanisms for manual alarm devices correspond to the contents mentioned above, they will not be described redundantly one by one. As illustrated above, the manual alarm device of the present invention ensures that only a specific tool can reset the operating element by way of the cooperation between the locking elements and the stop block, and this increases the safety factor of the manual alarm device and is in conformity with the requirements of the relevant standards. Furthermore, the reset key protection device for the manual alarm device is simple in structure and low in costs, and there is no need to fit a mechanical drive device, thus saving manufacturing costs .
Described above are merely schematic particular
embodiments of the present invention, which are not intended to limit the scope of the present invention. Any equivalent changes, amendments and combinations made by those skilled in the art without departing from the spirit and principle of the present invention should all belong to the scope of protection for the present invention.

Claims

Claims
1. A reset mechanism for a manual alarm device, wherein said manual alarm device comprises a base (10) with a bottom face (14) and an upper cover (60) capable of covering the base (10) ;
wherein said reset mechanism comprises:
a reset key (70) ;
an upper cover insertion aperture (62) disposed on said upper cover for said reset key (70) to be inserted therein; a base insertion aperture (12) disposed on said base (10) for said reset key (70) to be inserted therein;
a stop block (13) connected pivotably to said base (10), with the stop block (13) being capable of pivoting about a shaft parallel with said bottom face; and
a pair of locking elements (63) disposed on said upper cover (60) and being capable of clamping said stop block (13), with said reset key (70) being capable of pushing said locking elements (63) to release said stop block (13) clamped thereby.
2. The reset mechanism for a manual alarm device as claimed in claim 1, wherein said locking elements (63) are elastic cantilevers .
3. The reset mechanism for a manual alarm device as claimed in claim 1, wherein said reset key (70) has an insertion part in the shape of two parallel columns.
4. The reset mechanism for a manual alarm device as claimed in claim 3, wherein there are two of said upper cover
insertion apertures (62), and the upper cover insertion apertures (62) are adapted to the cross-sectional shape of said columns of the reset key (70) .
5. A manual alarm device, comprising:
a base (10) with a bottom face;
an upper cover (60) capable of covering said base (10); an operating element (40) disposed in a receiving space (80) formed by said base (10) and said upper cover (60); and a reset key which can be inserted into said receiving space (80) via said upper cover (60) and said base for pushing said operating element (40) to reset;
wherein
a base insertion aperture (12) is disposed on said base (10) for said reset key (70) to be inserted therein;
an upper cover insertion aperture (62) is disposed on said upper cover (60) for said reset key (70) to be inserted therein;
a stop block (13) is connected pivotably to said base (10), which stop block (13) can pivot about a shaft that is parallel with said bottom face; and
a pair of locking elements (63) are disposed on said upper cover (60) and are capable of clamping said stop block (13), with said reset key (70) being capable of pushing said locking elements (63) to release said stop block (13) clamped thereby .
6. The manual alarm device as claimed in claim 5, wherein said locking elements (63) are elastic cantilevers.
7. The manual alarm device as claimed in claim 5, wherein said reset key (70) has an insertion part (72) in the shape of two parallel columns.
8. The manual alarm device as claimed in claim 7, wherein there are two of said upper cover insertion apertures (62), and the upper cover insertion apertures (62) are adapted to the cross-sectional shape of said columns of the reset key (70) .
EP11713206.8A 2010-03-31 2011-03-23 A reset mechanism for a manual alarm device and a manual alarm device with the same Active EP2553669B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201010137697 CN102208296B (en) 2010-03-31 2010-03-31 Reset mechanism of manual alarm device and manual alarm device
PCT/EP2011/054406 WO2011120850A1 (en) 2010-03-31 2011-03-23 A reset mechanism for a manual alarm device and a manual alarm device with the same

Publications (2)

Publication Number Publication Date
EP2553669A1 true EP2553669A1 (en) 2013-02-06
EP2553669B1 EP2553669B1 (en) 2014-04-30

Family

ID=44260046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11713206.8A Active EP2553669B1 (en) 2010-03-31 2011-03-23 A reset mechanism for a manual alarm device and a manual alarm device with the same

Country Status (3)

Country Link
EP (1) EP2553669B1 (en)
CN (1) CN102208296B (en)
WO (1) WO2011120850A1 (en)

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CN106504922B (en) * 2016-10-26 2019-03-19 四川赛科安全技术有限公司 A kind of manual pull station
RU182433U1 (en) * 2017-11-13 2018-08-16 Общество с ограниченной ответственностью "ЕХ-ПРИБОР" Manual fire detector
CN108211119B (en) * 2017-12-19 2021-03-30 重庆金泓和瑞科技有限公司 A witness rescue device based on the Internet of Things
CN109147291B (en) * 2018-08-30 2024-02-27 浙江东方职业技术学院 Optical fiber manual fire alarm button and use method thereof
CN109410501B (en) * 2018-11-01 2020-12-18 天津市新正防爆电器有限公司 Explosion-proof manual fire alarm

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EP1203361B1 (en) * 1999-08-10 2006-09-20 Fulleon Limited Call points or break glass units
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Also Published As

Publication number Publication date
HK1158814A1 (en) 2012-07-20
CN102208296A (en) 2011-10-05
EP2553669B1 (en) 2014-04-30
WO2011120850A1 (en) 2011-10-06
CN102208296B (en) 2013-11-06

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