CN101751742A

CN101751742A - Alarm device

Info

Publication number: CN101751742A
Application number: CN200910211248A
Authority: CN
Inventors: 加藤智广
Original assignee: Nohmi Bosai Ltd
Current assignee: Nohmi Bosai Ltd
Priority date: 2008-12-04
Filing date: 2009-11-05
Publication date: 2010-06-23
Anticipated expiration: 2029-11-05
Also published as: TWI505237B; JP2010134673A; CN101751742B; KR20100064329A; JP5279470B2; TW201025206A

Abstract

The present invention provides an alarm device which can improve the operation performance of as switch. The alarm device comprises the following components: a state (fire) detection part (5) which is used for detecting a state (fire); a circuit substrate (4) which is provided with a state (fire) detection part (5) and a switch (6); an operation component (10) which is used for pressing a switch (6); a housing (1) which is provided with a body part (2) and a cover part (3) for accommodating the circuit substrate (4). The operation component (10) is provided with a switch operation part (11) and a shaft part (13), wherein the switch operation part (11) is provided with a plurality of continuously equipped operation surfaces (12). The operation surfaces (12) of the switch operation part (11) are set to extend out from an opening (3c) on the housing (1). The shaft (13) is rotatably supported by a supporting part. The operation component (10) is rotatable along a direction in which the operation surfaces (12) are continuously equipped.

Description

Alarm device

Technical Field

The present invention relates to an alarm device, and more particularly to an alarm device capable of improving the operability of a switch.

Background

A fire alarm device having a fire detection unit is provided with a switch for stopping an alarm sound generated when a fire is detected or confirming an operation of the fire alarm device. An operating member for operating the switch is also provided. For example, japanese patent laid-open publication No. 2004-.

Disclosure of Invention

However, the conventional fire alarm device (see, for example, japanese patent laid-open publication No. 2004-.

In order to solve the above problems, an object of the present invention is to provide an alarm device capable of improving the operability of a switch.

The alarm provided by the invention comprises: a state detection section for detecting a state; a circuit board on which the state detector and the switch are mounted; an operating member for pressing the switch; a case having a main body portion and a lid portion for accommodating the circuit board; the operating member has a switch operating portion in which a plurality of operating surfaces are continuously provided, and a shaft portion, the operating surfaces of the switch operating portion protruding from an opening formed in the housing, the shaft portion being rotatably supported by a support portion, and the operating member being rotatable in a direction in which the operating surfaces are continuously provided.

The operating member is provided with a flat plate portion on the side opposite to the side on which the operating surface of the switch operating portion is provided, the shaft portion is provided on the flat plate portion, and the switch operating portion divides the flat plate portion into a first operating surface portion and a second operating surface portion by a virtual extended surface extending in the direction of the operating surface.

Further, a recess portion is provided as the support portion in at least one of the main body portion and the lid portion, and the shaft portion is supported in the recess portion by the main body portion being caught by the lid portion.

Further, a length of a gap formed between the support portion and the shaft portion is equal to or greater than a length of a gap formed between the switch operation portion and the switch.

The operating component is provided with a stay wire mounting part for mounting a stay wire.

When the operation member is not operated, the operation member is in a state of not pressing the switch by its own weight.

In the present invention, the operating member has a switch operating portion in which a plurality of operating surfaces are continuously provided, and a shaft portion, the operating surface of the switch operating portion protrudes from an opening portion formed in the housing, and is rotatably supported by the support portion via the shaft portion, and the operating member is rotatable in a direction in which the operating surfaces are continuously provided, so that the switch can be pressed by operating the operating member from a plurality of different directions. Therefore, the operation performance of the switch is improved.

The operating member is provided with a flat plate portion on the side opposite to the side on which the operating surface of the switch operating portion is provided, the shaft portion is provided on the flat plate portion, and the switch operating portion divides the flat plate portion into a first operating surface portion and a second operating surface portion by using an imaginary extension surface extending in the direction of the operating surface. Therefore, for example, in the case where the alarm device is mounted on a roof surface, if the operation member is disposed such that the first operation surface portion protrudes from a lower portion of the alarm device, the second operation surface portion protrudes from a side portion of the alarm device. Therefore, the switch can be operated not only from below the alarm but also from the side of the alarm.

In addition, a recess is provided as a support portion in at least one of the main body portion and the cover portion, and the shaft portion is supported in the recess by the main body portion engaging with the cover portion. Therefore, the body portion and the lid portion are easily manufactured, and the cost of the alarm device can be reduced. Further, the shaft portion can be firmly supported.

Further, a length of a gap formed between the support portion and the shaft portion is equal to or longer than a length of a gap formed between the switch operation portion and the switch. Therefore, even when the switch is pressed in a direction in which the operation member cannot rotate, the switch can be pressed.

Further, since the operating member is provided with a wire attaching portion to which the wire is attached, pulling the wire can also operate the operating member to push the switch.

When the operation member is not operated, the operation member is in a state where the switch is not pressed by its own weight. Therefore, the urging member for returning the operation member to the state where the switch is not pressed is not required, and the structure of the alarm can be simplified.

Drawings

Fig. 1 is an external perspective view of a fire alarm device according to an embodiment of the present invention.

Fig. 2 is a bottom view of a fire alarm device according to an embodiment of the present invention.

Fig. 3 is a schematic view of section a-a of fig. 2.

Fig. 4 is a schematic view of section B-B of fig. 2.

Fig. 5 is an external perspective view of an operation member according to the embodiment of the present invention.

Fig. 6 is a schematic sectional view showing an operating state of an operating member according to the embodiment of the present invention.

Description of the reference numerals

The fire alarm comprises a shell 1, a main body 2, a lower part 2a, a cover 3, a rib 3a, a recess 3b, an opening 3c, a smoke inlet 3d, a sound hole 3e, a circuit board 4, a fire detection part 5, a switch 6, a pressing part 6a, an operating part 10, a switch operating part 11, a recess 11a, an operating surface 12, a first operating surface part 12a, a second operating surface part 12b, a shaft part 13, a flat plate part 14a virtual extension surface 14a, a stay wire mounting part 15, a contact part 16, a stay wire 20 and a fire alarm 100.

Detailed Description

Detailed description of the preferred embodiments

In the present embodiment, a fire alarm device in which a state detection unit detects a fire according to the present invention will be described as an example.

There are various fire alarm devices including a fire alarm device that detects smoke using a light emitting element and a light receiving element, a fire alarm device that detects heat using a heat sensitive element, a fire alarm device that detects flame using a thermoelectric element, and the like. In the following embodiments, a case where the present invention is applied to a fire alarm device that detects smoke by using a light emitting element and a light receiving element will be described.

Fig. 1 is an external perspective view of a fire alarm device according to an embodiment of the present invention, fig. 2 is a bottom view of the fire alarm device, fig. 3 is a schematic view of a section a-a of fig. 2, and fig. 4 is a schematic view of a section B-B of fig. 2. Fig. 5 is an external perspective view of the operation member according to the embodiment of the present invention. Fig. 1 to 5 are partially different in scale. The fire alarm device of the present embodiment will be described below with reference to fig. 1 to 5. Fig. 1 shows a state in which the fire alarm device is installed on a roof surface. In the following description, the vertical and horizontal directions in fig. 1 will be described.

The fire alarm device 100 includes a fire detection unit 5 that detects a fire, a circuit board 4 on which the fire detection unit 5, a switch 6, and the like are mounted, an operating member 10 that operates (presses) the switch 6, a housing 1 that houses the circuit board 4 and the like, and the like. The fire alarm device 100 uses, for example, a lithium battery as a drive source.

The housing 1 is composed of a main body 2, a lid 3, and the like. The body 2 is formed in a bottomed cylindrical shape having an opening at a bottom surface portion. The lid 3 is formed in a bottomed cylindrical shape having an upper opening. The bottom surface of the lid 3 is formed in a shape inclined toward the center. A smoke inlet 3d is formed at substantially the center of the bottom surface of the cover 3, and the smoke inlet 3d is used for allowing smoke to flow into a fire detector 5 described later.

The lid portion 3 is caught on the body portion 2. In a state where the lid portion 3 is caught on the body portion 2, an upper surface portion of the rib 3a formed inside a side surface portion of the lid portion 3 faces a lower surface portion of the body portion 2. A recess 3b is formed in an upper surface portion of the rib 3a, and a shaft portion 13 of an operating member 10 described later is rotatably supported by the recess 3b and a lower surface portion 2a of the main body portion 2. The recess 3b and the lower surface portion 2a of the main body 2 correspond to a support portion. By forming the support portion in this manner, resin molding of the main body portion 2 and the cover portion 3 is facilitated, and the cost of the mold and the components of the fire alarm 100 can be reduced. Further, the shaft portion 13 of the operating member 10 can be firmly supported.

The recess 3b may be provided in the lower surface portion 2a of the main body 2, or the recess 3b may be provided in both the upper surface portion of the rib 3a and the lower surface portion of the main body 2. Further, although the concave portions 3b are formed in the ribs 3a as the reinforcing members, convex portions for forming the concave portions 3b may be separately formed. The shape, position, and the like of the support portion are not limited to those of the present embodiment, and various configurations may be adopted as long as the shaft portion 13 of the operation member 10 can be rotatably supported.

The housing 1 accommodates a circuit board 4 on which a fire detector 5, a switch 6, and the like are mounted. The fire detection unit 5 detects smoke generated when a fire breaks out, and includes a light emitting element (not shown) and a light receiving element (not shown) therein. The amount of scattered light generated when smoke flows into the fire detection unit 5 increases, thereby detecting a fire. The fire detection section 5 is housed in the case 1 with its bottom side facing the smoke inlet 3d of the cover section 3.

By pressing the pressing portion 6a of the switch 6, the alarm sound emitted from the alarm device (not shown) through the acoustic hole 3e of the cover portion 3 at the time of fire detection can be stopped. Further, whether or not the fire alarm device is operating normally (whether or not the alarm device is operating normally) can be checked by pressing the pressing portion 6 a.

In order to press the pressing portion 6a of the switch 6 (in order to operate the switch 6), an operating member 10 is incorporated in the housing 1.

As shown in fig. 5, the operation member 10 includes a switch operation portion 11, a shaft portion 13, a flat plate portion 14, and the like. A plurality of operation surfaces 12 are provided in series in the longitudinal direction of the switch operation portion 11 at the lower portion (front side in fig. 5) of the switch operation portion 11. The perpendicular lines to these operation surfaces 12 are substantially radial in the longitudinal direction. These operation surfaces 12 (lower portions of the switch operation portions 11) are provided so as to protrude from the opening portion 3c formed in the cover portion 3.

A flat plate portion 14 having a substantially flat plate shape is provided upright on an upper portion (an inner side in fig. 5) of the switch operating portion 11, for example, on the right side. A virtual extension surface 14a of the flat plate portion 14, which extends the flat plate portion 14 in the direction of the switch operation portion 11, is provided at a position where the switch operation portion 11 is divided into the first operation surface portion 12a and the second operation surface portion 12 b. Thus, the operation panel 12 (the lower portion of the switch operation portion 11) can be provided so as to protrude not only from the lower surface portion of the fire alarm device 100 (the cover portion 3) but also from the side surface portion of the fire alarm device 100 (the cover portion 3).

The flat plate portion 14 is not necessarily provided at the above-described position. For example, the flat plate portion 14 may be provided at the upper right end of the switch operating portion 11. At this time, by providing the flat plate portion 14 (and the shaft portion 13) outside the case, the operation surface 12 (the lower portion of the switch operation portion 11) can be made to protrude from the side surface portion of the fire alarm device 100 (the cover portion 3).

Further, at an upper portion (inner side in fig. 5) of the switch operating portion 11, for example, at the left side, a contact portion 16 is formed for the switch operating portion 11 to contact when the pressing portion 6a of the switch 6 is pressed. When the switch operating portion 11 presses the pressing portion 6a of the switch 6, a recess 11a (shown in fig. 6) is formed in an upper portion of the switch operating portion 11 in order to prevent the electric component mounted on the circuit board 4 from interfering with the switch operating portion 11.

The pair of shaft portions 13 are provided to protrude from side portions of the flat plate portion 14. These shaft portions 13 are rotatably supported by a support portion constituted by the recess 3b of the lid portion 3 and the lower surface portion 2a of the main body portion 2. Thus, the operation member 10 is rotatable in a direction in which the operation surface 12 of the switch operation portion 11 is continuously provided (a longitudinal direction of the switch operation portion 11). By supporting the shaft portion 13 on the support portion, the stroke of the switch operation portion 11 (the gap formed between the contact portion 16 of the switch operation portion 11 and the pressing portion 6a of the switch 6) can be increased, and malfunction of the switch 6 can be prevented. A wire attaching portion 15 to which a wire 20 is attached is provided, for example, at an upper portion of the flat plate portion 14. The front end of the wire attaching portion 15 is formed in a substantially コ shape, and the wire 20 can be easily attached or detached.

Further, the operation surface 12 is not necessarily substantially perpendicular to the portion (ridge line portion) where each operation surface 12 is continuously provided in the direction of connecting the operation surfaces 12. For example, the portions (ridge portions) where the operation surfaces 12 are continuously provided may be inclined with respect to the longitudinal direction of the switch operation portion 11. For example, the operation surface 12 may be curved in the longitudinal direction of the switch operation portion 11. That is, each operation surface 12 may be formed along the rotation direction of the operation member 10. The shaft portion 13 is not necessarily provided on the flat plate portion 14, and may be provided on the switch operating portion 11, for example.

As shown in fig. 6 described later, a gap L2 is formed between the shaft portion 13 and a support portion formed by the recess 3b of the lid portion 3 and the lower surface portion 2a of the body portion 2. The rectangle indicated by a chain line in fig. 6 indicates the shape of the support portion constituted by the recess 3b of the lid portion 3 and the lower surface portion 2a of the main body portion 2. The gap L2 is larger than a gap L1 formed between the contact portion 16 of the switch operating portion 11 and the pressing portion 6a of the switch 6.

Movement of

Next, the operation of the operation member 10 according to the present embodiment will be described.

Fig. 6 is a schematic sectional view showing an operating state of an operating member according to the embodiment of the present invention. Here, (a) shows a state in which the operation member 10 does not press the pressing portion 6a of the switch 6 (non-operated state). (b) And (c) shows a state (operation state) in which the operation member 10 presses the pressing portion 6a of the switch 6. In addition, the thick solid arrow shown in fig. 6 indicates the pressing direction of the push switch operating portion 11. The thick dashed arrow indicates the direction of the pulling wire 20. These pressing directions or pulling directions are only one example.

As shown in fig. 6a, the operating member 10 can press the switch operating portion 11 (operating surface 12) from a plurality of directions, thereby pressing the pressing portion 6a of the switch 6.

For example, when the switch operating portion 11 (operating surface 12) is pushed in a rotatable direction by the operating member 10, as shown in fig. 6(b), the shaft portion 13 rotates within the support portion (or the shaft portion 13 rotates while sliding within the support portion), and the operating member 10 rotates. The contact portion 16 of the switch operating portion 11 presses the pressing portion 6a of the switch 6.

For example, in the case of pulling the wire 20, the wire attachment portion 15 is pulled rightward. Therefore, as shown in fig. 6(b), the shaft portion 13 rotates in the support portion (or the shaft portion 13 rotates while sliding in the support portion), and the operation member 10 rotates. The contact portion 16 of the switch operating portion 11 presses the pressing portion 6a of the switch 6.

As shown in fig. 6 c, for example, when the switch operating portion 11 (operating surface 12) is pressed in the direction of the shaft portion 13 from the direction of the virtual extended surface 14a of the flat plate portion 14, the operating member 10 may not rotate. However, in the present embodiment, since the gap L2 (> L1) is formed between the support portion and the shaft portion 13, the operating member 10 can be moved upward by sliding the shaft portion 13 in the support portion. Therefore, as shown in fig. 6 c, even when the switch operating portion 11 (operating surface 12) is pressed in a direction in which the operating member 10 does not rotate, the pressing portion 6a of the switch 6 can be pressed by the contact portion 16 of the switch operating portion 11.

The switch operating portion 11 is formed to be heavier than the flat plate portion 14 on the upper side of the shaft portion 13. Thus, if the operation member 10 stops operating the switch 6 (pressing the pressing portion 6 a), the operation member 10 returns to a state where the pressing portion 6a of the switch 6 is not pressed by its own weight. At this time, since the weight of the wire 20 itself is extremely light and is within a negligible range, it is not necessary to separately provide a member for applying a biasing force in order to return the operating member 10 to a state where the pressing portion 6a of the switch 6 is not pressed. The structure of the fire alarm 100 can be simplified. The same effect is obtained even in a state where the wire 20 is attached to the wire attaching portion 15. The shaft portion 13 may be provided by the wire attachment portion 15, and the same effect can be obtained even if the wire 20 is heavy. Another biasing member may be provided separately to return the operating member 10 to a state where the pressing portion 6a of the switch 6 is not pressed.

In the fire alarm device 100 configured as described above, the lower portion of the switch operating portion 11 in which the plurality of operating surfaces 12 are continuously provided protrudes from the opening portion 3c, and the operating member 10 (switch operating portion 11) is provided so as to be rotatable in the direction in which the operating surfaces 12 are continuously provided, so that the operating member 10 can be operated (the switch operating portion 11 is pressed) from a plurality of different directions to press the pressing portion 6a of the switch 6. Therefore, the operability of the switch 6 can be improved.

Although the present invention is applied to a fire alarm device that detects smoke using a light-emitting element and a light-receiving element in the present embodiment, the present invention may be applied to various fire alarm devices such as a fire alarm device that detects heat using a heat-sensitive element, a fire alarm device that detects flames using a thermoelectric element, and the like. The present invention can also be applied to an alarm device for detecting an abnormality or the like.

Claims

1. An alarm, characterized by comprising:

a state detection section for detecting a state;

a circuit board on which the state detector and the switch are mounted;

an operating member for pressing the switch;

a case having a main body portion and a lid portion for accommodating the circuit board; wherein,

the operation member has a switch operation portion and a shaft portion provided with a plurality of operation faces in series,

the operation surface of the switch operation portion protrudes from an opening portion formed in the housing,

the shaft portion is rotatably supported by a support portion, and the operation member is rotatably provided in a direction in which the operation surface is continuously provided.

2. An alarm unit according to claim 1,

the operating member is provided with a flat plate portion on the side opposite to the side on which the operating surface of the switch operating portion is provided,

the shaft portion is provided on the flat plate portion,

the switch operation portion divides the flat plate portion into a first operation surface portion and a second operation surface portion by a virtual extension surface extending in a direction of the operation surface.

3. An alarm unit according to claim 1 or 2,

a recess portion as the support portion is provided at least on one of the main body portion and the cover portion,

the shaft portion is supported by the recess portion by being caught by the body portion.

4. The alarm apparatus according to claim 1 or 2, wherein a length of a gap formed between the support portion and the shaft portion is equal to or greater than a length of a gap formed between the switch operating portion and the switch.

5. An alarm unit according to claim 1 or 2 wherein a cable attachment portion is provided on the operating member to which a cable is attached.

6. The alarm device according to claim 1 or 2, wherein when the operation member is not operated, the operation member is in a state where the switch is not pressed by its own weight.