JPH10105844A - Fire transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire transmitter which can easily mutually attach/detach a surface cover and a base main body by attachment/detachment of mutual engagement. SOLUTION: In the fire transmitter P, the protection plate 4 of the transmission switch 1 of a depression key-system is made observable from a window hole, and the surface cover 3 provided on the operation window 3c of a protection plate restrain release means and the base main body 2 to which a protection plate resistant means holding the transmission switch 1 of depression key- system in a depression state by restraining the protection plate 4 when the protection plate 4 is depressed and the protection plate restraint release means for releasing the restraint of the protection plate 4 by the protection plate restraint means are fitted are provided. An engagement connection means for depressing the surface cover 3 from the front is provided for the inner face of the surface cover 3 and the corresponding inner face of the base main body 2, and a connection release means for releasing the engagement connection for the peripheral edge of the surface cover 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fire transmitter used for emergency notification of a fire or emergency.

[0002]

2. Description of the Related Art A fire transmitter P of this type is used, for example, in a building or the like, as shown in FIG. 3, by attaching a front cover 100 in which a protection plate 101a of a push button type transmission switch is exposed through a window hole 101 to a wall surface. It is installed in a corridor or the like so as to be exposed from the like, and in the event of a fire or the like, if the protection plate 101a is strongly pressed, the operation part of the built-in push-button type transmission switch is pressed and held, and the receiver 102 side is A notification signal is sent, and an alarm lamp 103 installed near the receiver 102
Flashes and an alarm is generated.

The protection plate 101a protects the operation button in order to prevent the push-button transmission switch from being easily operated by mischief or the like. In an emergency, the protection button 101a operates the push-button transmission switch. And is crushed by the knockout 101b. Therefore, the protection plate 101a is crushed each time it is used, and each time,
It needed to be replaced. Therefore, the applicant has
In order to solve this problem, a fire transmitter that can press and hold the push button type transmission switch without crushing the protection plate 101a and return the protection plate to its original state upon restoration has already been proposed. .

FIGS. 4 to 8 show the structure of a fire transmitter according to this proposal, in which a push button type transmission switch 1 has an operation portion 1a projecting from a push button insertion hole 2a formed in the center. An annular protection plate guide wall 2b is formed on the disc-shaped base body 2 so as to surround the push button insertion hole 2a. On the outer periphery, an upper circular lower partition 2c having a release button receiving recess 2d is formed concentrically. An upper circular lower locking member 51 made of a spring steel wire, which corresponds to the protection plate locking means, is housed in the upper circular lower partition 2c, and has a rectangular portion 51.
a is housed and fixed in the housing portion 2e sandwiched between the U-shaped fixed guide wall 2f and the above-described upper circular lower partition 2c, and a circular cap-shaped protection provided with a locking flange 4a on the periphery from above. The plate 4 is attached to the base body 2 by a protection plate retainer 41 having an upper circular lower portion formed with an opening 41a in the center thereof for projecting the protection plate 4 together with a return spring 61 corresponding to a protection plate unlocking means. 4 is stopped, and FIG.
As shown in FIG. 7, the wedge-shaped projection 62a of the release button 62 is positioned in the notch 51b of the locking member 51, and the operation part 62b of the release button 62 is inserted into the release button accommodation hole 41b of the protection plate retainer 41. It is designed to be accommodated. The protective plate retainer 41 is fixed to the base body 2 by tapping screws via ears 41c formed around the protective plate retainer 41.

[0005] In the above-mentioned fire transmitter P, screws 7, 7 are inserted through daruma holes 2g, 2g of the base body 2 shown in FIG.
After fixing the base body 2 to the switch box SB attached to the hole H formed in the wall surface W, the front cover 3 is placed over the base body 2 and screws formed on both sides of the window hole 3a. Screws 8, 8 are inserted through the holes 3b, 3b, and screwed into the screw mounting pedestals 2h, 2h of the base main body 2 having the thread grooves through the rubber washers 81, 81,
The front cover 3 is integrally fixed to the base body 2. Then, as shown in FIG. 5, the fire transmitter P is mounted on the wall surface W with the protection plate 4 exposed through the center window 3 a of the front cover 3.
Will be buried.

Further, the front cover 3 of the fire transmitter P according to this proposal is provided with an operation window 3c into which a window frame 9 in which a door 91 is openably mounted is fitted.
Opening 1 allows the operation section 62b of the release button 62 to be exposed. Therefore, the fire transmitter P having such a structure
According to the above, when the protective plate 4 exposed through the window hole 3a of the front cover 3 is strongly pressed in an emergency such as a fire,
As shown in FIG. 7, the protection plate 4 is pushed in against the elastic force of the return spring 61, and the locking flange 4a
8, the operating portion 1a of the push button type transmission switch 1 is held in a pressed state and held in an alerting state (at this time, the notch 51a of the locking member 51 is As shown by a two-dot chain line, the locking flange 4a of the protection plate 4 is engaged and held. However, at the time of recovery, if the door 91 of the front cover 3 is opened, the operation portion 62b of the release button 62 is opened. Because it is exposed
When the operating portion 62b is pressed, the notch 51a of the locking member 51 is expanded, and the inner peripheral edge of the locking member 51 is moved to the outer edge of the locking flange 4a of the protection plate 4 as shown in FIG. As shown in FIG. 5, the protection plate 4 returns to the pulled-out state again by the elastic force of the return spring 61, the pressing force on the push button type transmission switch 1 is released, and returns to the off state.

[0007] Since the proposed fire transmitter P performs the above-described operation, the pressed protective plate 4 can be issued without being crushed. By simply opening the door 91 of the operation window 3c and pressing the operation portion 62b of the release button 62, the protection plate 4 can be returned to the original state by using the elastic force of the return spring 61 and can be reused. There were advantages.

[0008]

Incidentally, the fire transmitter according to the above proposal has a structure in which a front cover is screwed to a base body to which a push button type transmission switch is attached. And other problems.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a push-button type transmission switch which can press and hold a push-button type transmission switch without crushing a protection plate. When the alarm is released after pressing and holding the alarm, the push button type transmission switch can be returned to the original state together with the protection plate, and the front cover and base body can be easily attached and detached by engaging and disengaging each other. To provide a fire transmitter.

[0010]

According to a first aspect of the present invention, there is provided a fire transmitter in which a protection plate of a push button type transmission switch is exposed from a window hole and a protection plate locking release means. A front cover provided with an operation window, a protection plate locking means for locking the protection plate when the protection plate is pressed, and holding a push button type transmission switch in a pressed state; In a fire transmitter comprising a base body having a protection plate unlocking means for unlocking the protection plate by the stopping means, the front cover is provided with the front surface on the inner surface of the front cover and the corresponding inner surface of the base body. In addition to the above, there is provided an engagement connection means for pressing and attaching the front cover, and a connection release means for releasing the engagement connection on the periphery of the front cover. Thus, the front cover can be attached to the base body by pressing the front cover from the front surface, and can be engaged and disengaged.

According to a second aspect of the present invention, there is provided a fire transmitter according to the first aspect, wherein the engagement coupling means has an engagement claw on an inner surface of the front cover, and the engagement claw on an inner surface of the base body. The coupling release means is provided with an engaging claw projecting from the inner edge surface of the base body, and is engaged with a portion of the peripheral edge of the front cover corresponding to the engaging claw. A receiving hole and a release hole for releasing the engagement are provided. Thus, the engagement between the front cover and the base body can be released by releasing the engagement by the one engagement receiving piece through the release hole.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the fire transmitter according to the present invention will be described below with reference to FIGS. Note that the same members as those of the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted. 1 is a schematic configuration diagram of a fire transmitter, (a) is a front view, (b) is a BB side sectional view,
(C) is a CC side sectional view, and (d) is a view as viewed from an arrow D. FIG. 2 is an explanatory diagram for explaining an operation of attaching the front cover of the fire transmitter illustrated in FIG. 1.

The fire transmitter P also has a front cover 3 provided with an operation window 3c for a protection plate lock releasing means, while the protection plate 4 of the push button type transmission switch 1 is exposed through the window hole 3a. A protection plate locking means for locking the protection plate 3 when the plate 3 is pressed and holding the push button type transmission switch 1 in a pressed state, and locking the protection plate by the protection plate locking means. A push button type transmission switch 1, a base body 2, a front cover 3, and a protection plate having substantially the same functions as those of the prior art. 4, a locking member 51 corresponding to the protection plate locking means, and a return spring 61 corresponding to the protection plate locking releasing means. And, on the inner surface of the front cover 3 and the corresponding inner surface of the base body 2, there is provided an engagement connecting means for pressing and attaching the front cover 3 from the front surface, and this engaging connection is provided on the peripheral edge of the front cover 3. Disconnection means for releasing is provided.

The base main body 2 corresponds to the above-described engaging and connecting means. The base body 2 has an engaging hole 2i, an engaging receiving piece 3e at a position corresponding to an engaging claw 3d of a front cover 3 described later. And a corresponding engaging claw 21 protruding from the inner edge surface which is a corresponding portion.

The engagement hole 2i is engaged with a claw portion at the tip of an engagement claw 3d, which will be described later, at the center of a rectangular protrusion provided at a predetermined position on the inner surface of the disk-shaped base body 2. At the height position, it is slightly larger than the claw portion of the engaging claw 3d, and is provided continuously with a guide slope 2j for guiding a protruding portion at the tip when the engaging claw 3d is engaged. On the opposite side of the guide hole 2j of the engagement hole 2i, there is provided an opening space 2k for accommodating the claw portion at the time of engagement and connection.
The two engagement holes 2i are provided on the left and right of the position above the center when the base body 2 is installed.

The engagement claw 21 is an engagement coupling means which is engaged with an engagement receiving piece 3e of the front cover 3 described later.
e and protrudingly formed on the inner edge surface corresponding to the portion e. The engaging claw 21 is formed such that its claw portion extends outward from the inner edge, and when the intermediate portion of the protrusion is pressed from the side by a predetermined pressing force, the claw portion at the tip and the engagement receiving piece 3e are connected. It is formed with a spring property that can disengage and return to the original state.

The front cover 3 is made of a synthetic resin such as an ABS resin. The operation window 3c is located above the center of the operation window 3c.
An engaging claw 3d is provided at a position corresponding to the engaging hole 2i of the base body 2 on the left and right with the engaging claw 2 provided below.
and an engaging receiving piece 3e which engages with the engaging claw 2j at a peripheral portion corresponding to the position 1 and an engagement releasing means for releasing the engagement between the engaging claw 2j and the engaging receiving piece 3e. And a release hole 3f.

The engaging claw 3d has a claw portion formed from the inner edge toward the outer side. The engagement receiving piece 3e is attached to the front cover 3
Are formed so as to protrude inward at a predetermined width dimension from the peripheral edge of the. As shown in FIGS. 1C and 1D, the release hole 3f has a width and a length into which the tip of a flathead screwdriver can be inserted.

The fire transmitter described above has a front cover 3
First, the front cover is pressed from the front so that the engagement claws 3d are inserted into the engagement holes 2i, and then the engagement claws 21 of the base body 2 are engaged with the engagement receiving pieces 3e. And are engaged and coupled. When releasing the engagement of the front cover, the engagement claw 2 engaged with the engagement receiving piece 3e is required.
By pressing the base end portion of 1 with the tip end portion of a flathead screwdriver inserted into the release hole 3f, the engagement of the projecting portion at the tip end can be released.

The fire transmitter described above can press and hold the push button type transmission switch 1 without crushing the protection plate 4, and also recovers after pressing and holding the push button type transmission switch 1 to issue an alarm. At the same time, the push button type transmission switch can be returned to the original state together with the protection plate 4, and the front cover 3 can be pressed and attached to the base body 2 from the front surface and engaged and disengaged. The front cover 3 and the base body 2 can be easily attached to each other with a small amount of work by engaging with each other, and further, a small amount of engagement can be released using a tool such as a screwdriver. Can be made easier. In addition, since the engagement between the front cover 3 and the base body 2 can be released by releasing the engagement by the one engagement receiving piece 3e via the release hole 3f, the front cover 3 can be easily mischievous due to mischief. Will not be removed.

[0021]

According to the first aspect of the present invention, the front cover can be attached to the base body by pressing the front cover from the front surface, and can be engaged and disengaged.
Attachment between the front cover and the base body can be easily performed with a small amount of work by engagement with each other, and further, disengagement can be easily performed with a small amount of work using a tool such as a screwdriver.

The fire transmitter according to claim 2 has the same effect as that of claim 1, and furthermore, the front cover and the base are released by releasing the engagement of the engagement receiving piece at one place through the release hole. Since the engagement with the main body can be released, the front cover is not easily removed by mischief or the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a fire transmitter according to an embodiment of the present invention, wherein (a) is a front view, (b) is a BB side sectional view, and (c) is a CC side sectional view. (D) is a view as seen from the arrow D.

FIG. 2 is an explanatory diagram for explaining an operation of attaching a front cover of the fire transmitter illustrated in FIG. 1;

FIG. 3 is an explanatory diagram of a use state of a fire transmitter.

FIG. 4 is an exploded perspective view showing a conventional fire transmitter.

FIG. 5 is a side sectional view of a conventional fire transmitter.

FIG. 6 is an explanatory diagram for explaining a work of attaching a front cover of a conventional fire transmitter.

FIG. 7 is a partial side sectional view when a protection plate of a conventional fire transmitter is pressed.

FIG. 8 is an explanatory diagram of a locking member that is a main part of a conventional fire transmitter.

[Explanation of symbols]

 P Fire transmitter 1 Transmission switch 2 Base body 2i Engagement hole (engagement coupling means) 2l Engagement claw 3 Front cover 3a Window hole 3c Operation window 3d Engagement claw (engagement coupling means) 3e Engagement receiving piece 3f Release Hole (engagement releasing means) 4 Protective plate 51 Locking member (protective plate locking means) 61 Return spring (protective plate locking releasing means)

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Nobumasa Yamanaka 2856 Shiratsuka-cho, Tsu-shi, Mie Pref. Asahi Denki Kogyo Co., Ltd. (72) Inventor Kuniaki Yoshikawa 2856 Shiratsuka-cho, Tsu-shi, Mie pref.

Claims (2)

[Claims] 1. A front cover provided with an operation window of a protection plate lock release means, wherein a protection plate of a push button type transmission switch is exposed through a window hole, and a protection cover is provided when the protection plate is pressed. Protective plate locking means for locking a plate and holding a push button type transmission switch in a pressed state, and a base body provided with a protective plate lock releasing means for releasing locking of the protective plate by the protective plate locking means In the fire transmitter of the present invention, engagement coupling means for pressing and attaching the front cover from the front surface is provided on the inner surface of the front cover and the corresponding inner surface of the base main body, and the engaging means is provided on the periphery of the front cover. A fire transmitter characterized by comprising a coupling releasing means for releasing the coupling. 2. The engaging and disengaging means comprises: an engaging claw for engagement on an inner surface of a front cover; and an engaging hole on an inner surface of a base body corresponding to the engaging claw. The means is provided with an engagement claw protruding from an inner edge surface of the base body, and is provided with an engagement receiving piece and a release hole for releasing engagement at a position corresponding to the engagement claw on the peripheral edge of the front cover. The fire transmitter according to claim 1, wherein: