JP2008250681A - Fire-alarm device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire-alarm device capable of simply fixing fitting member on a fitting position of a ceiling, and the like, only with turning-operation of the stick-shaped operation member, arranged turnably in the fitting member. <P>SOLUTION: At an equal interval in fitting member 2, placing mechanism 11 is arranged. The placing mechanism 11 is equipped with the operation member 14 that turns about a supporting point S as the center, at its tip on the shorter side a holding part 15 for holding a claw 4 is arranged, in the fitting member 2 a through hole 16 for the claw 4 to penetrate is formed. When the fitting member 2 is fixed to a plaster board 3, the claw 4 is held in the holding part 15, the tip is positioned inside the through hole 16; and in its state, the operation member 14 is made to turn toward direction of an arrow A. By a principle of leverage, the claw 4 is merely hammered in the plaster board 3, and the fitting member 2 is fixed. The main part of the alarm 5 is fixed to the fitting member 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fire alarm configured to be easily attached to a desired position such as a ceiling or a wall surface.

  In recent years, fire alarms and gas detectors have been installed in ordinary households due to the growing awareness of disaster prevention. Taking a residential fire alarm as an example, a disk-shaped mounting base, alarm body, mounting screws, etc. are set and stored in a cardboard box for delivery. As a conventional example, the following fire alarm can be given (for example, refer to Patent Document 1).

  That is, the detector has a configuration in which a substantially disc-shaped mounting base is fixed to a ceiling or the like, and a main body in which various circuit components are incorporated is fixed to the mounting base. Then, when fixing the detector to the ceiling or the like, first remove the mounting screws such as the mounting base, the main body, and the cross-tapped tapping screws from the package. Next, the mounting screw is inserted into the through hole of the mounting base and is held in one hand so as to face the installation surface.

  In this state, the mounting base is screwed and fixed to the installation surface by rotating the mounting screw with a tool such as a screwdriver with the other hand. Following this operation, the main body is placed on the fixed mounting base, and this is rotated and fixed to the mounting base.

JP 2006-244408 A

  In the conventional example, when installing a fire alarm on a ceiling or the like, for example, insert a mounting screw into a screw insertion hole (so-called fool hole) formed on the mounting base, and hold it with one hand so that it does not come off. The base was pressed against the ceiling and the screw was tightened with a screwdriver with the other hand. This work was performed by a general user while facing the ceiling, and was a very difficult task.

In addition, since the above-mentioned work is performed by an unfamiliar person on an unstable stepladder, the mounting screw may be tightened diagonally, and in this case, the mounting base does not fit exactly on the ceiling surface and rattles. There was also. This was particularly difficult for elderly people who wanted to install fire alarms for homes.
Moreover, tools such as a screwdriver were necessary, and households that did not have a screwdriver had to bother to purchase.

  The present invention has been made in view of the above problems, and an object thereof is to provide a fire alarm that can be easily and accurately attached to a ceiling surface or the like.

  According to the present invention, in a fire alarm attached to a desired installation surface, an insertion member that is fixed to the installation surface and is attached to an alarm device main body, an insertion hole through which the fixing member is inserted, and the insertion hole according to the principle of scissors And a driving mechanism for driving the fixing member.

  The driving mechanism according to the present invention includes an operation member that holds the fixing member at a tip of a short side portion when viewed from a fulcrum, and that rotates the long side portion when viewed from the fulcrum, and a bearing that rotatably supports the operation member. And a member.

  The operation member of the present invention is provided with a long hole along the longitudinal direction so as to be movable in the longitudinal direction, and an engaging portion for locking one end of the operation member is integrally provided on the mounting member. And

The operation member according to the present invention is configured such that the operation member rotates about a fulcrum, and rotates together with the rotation member, and freely rotates with respect to the rotation member by releasing the fitting. And a sliding member that is engaged with one end of the rotating member.
A rotating member that is pivotally supported by the bearing member and pivots about the fulcrum and through which the operating member is inserted is provided between the operating member and the bearing member of the present invention. The member is configured to be movable in the longitudinal direction, and an engaging portion for locking one end of the operation member is integrally provided on the mounting member.

Since the present invention is configured as described above, the following various effects can be obtained.
In other words, the mounting member that can be mounted on the desired installation surface such as the ceiling is provided with a driving mechanism that can drive a fixing member such as a nail using the principle of the saddle. An attachment member such as a base can be attached to the ceiling or the like. Therefore, even a general user who is difficult to perform a force work, for example, an elderly person, can easily perform the work of fixing to the ceiling or the like with a relatively small force, and a tool such as a screwdriver is not necessary.

As a result of repeated research and experiments in order to solve the above problems, the present inventor has found that the following may be performed.
That is, the mounting member is provided with a bearing member that serves as a fulcrum and a rotating member that rotates while being supported by the bearing member, the fixing member is held at the tip of the short side portion of the rotating member, and the long side portion is By rotating and energizing as the operation member, the fixing member is driven into the ceiling or the like by using the principle of the saddle.

  According to this configuration, for example, a fixing member such as a nail is set at the tip of the rotating member, and the operating member is rotated in a state where the fixing member is positioned in an opening (an example of an insertion hole) provided in the mounting member. Thus, the mounting member can be fixed to the ceiling or the like.

Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.
The attachment member 2 constituting the fire alarm 1 is formed in a disk shape as shown in FIGS. As shown in FIG. 1, the mounting member 2 is fixed to the installation surface of a general house, for example, the surface of a gypsum board 3 that is a ceiling, by a nail 4 that is a fixing member. And after fixing the attachment member 2 as shown in FIG. 1, the alarm main body 5 is attached as shown by an imaginary line from the lower side, and the attachment of the fire alarm 1 is completed.

The mounting member 2 is formed by molding a synthetic resin. A pin insertion hole 7 for inserting the positioning pin 6 is formed in the central portion, and a frame portion 8 is provided on the outer surface.
In addition, three driving mechanisms 11 are provided inside the frame portion 8 at equal intervals in the circumferential direction.

  The driving mechanism 11 is used to easily drive the nail 4 into the gypsum board 3 with a small force by using the principle of scissors. The driving mechanism 11 includes a pair of bearing members 12a and 12b fixed to the mounting member 2 by screws, a rotating member 13 pivotally supported by the bearing members 12a and 12b, and the rotating member 13. A rod-like operation member 14 that rotates integrally is provided. The fulcrum shaft serving as the fulcrum S is the rotating member 13.

  The operation member 14 is made of metal and may have a thickness of about 1 cm or less. At one end (tip) of the operation member 14, a holding portion 15 is formed which holds a flat plate-like top portion of the nail 4, generally called a head, so as to be freely movable. The holding part 15 is a cavity, and its side shape is a T-shaped space as shown in FIGS.

  When the mounting member 2 is fixed to the gypsum board 3, the mounting member 2 is applied to the position to be fixed, and the positioning pin 6 is inserted from the pin insertion hole 7 and temporarily fixed. Next, the top part of the nail 4 is inserted into the holding part 15, the tip part is positioned in the opening part 16 (an example of an insertion hole) formed between the bearing members 12 a and 12 b, and the operation member 14 is picked with fingers, and FIG. As shown by arrow A.

  Since the operation member 14 has a longer interval between the fingers and the holding portion 15 than the interval from the fulcrum S to the holding portion 15, the nail 4 is driven obliquely into the gypsum board 3 with a small force due to the principle of scissors. The mounting member 2 can be fixed to the gypsum board 3 only by performing this driving operation once for each driving mechanism 3.

    In the driving mechanism 11, after the attachment member 2 is fixed, the operation member 14 is inclined as shown in FIG. If the operation member 14 can be locked so as to be parallel to the attachment member 2 as indicated by an imaginary line, the alarm body 5 can be easily attached and the space can be used effectively.

A first embodiment of the driving mechanism 11 that enables the operation member 14 to be locked will be described below with reference to FIG.
In this embodiment, the rotating member 13 is rotatably supported by the bearing members 12a and 12b, and the operation member 14 is configured to be able to slide through the rotating member 13 in the directions of arrows a and b. Yes. The holding portion 15 is formed at one end of the operation member 14, and a locking recess 17 is formed at the other end.

On the other hand, a locking protrusion 18 (an example of an engaging portion) having elasticity integrally with the mounting member 2 is formed at a position corresponding to the locking recess 17 of the mounting member 2.
The locking recesses 17 are formed on both side surfaces of the operation member 14 and have a symmetrical structure so that the locking projections 18 can also be locked from both side surfaces.

  When shipping the fire alarm device 1 as a product, the operation member 14 is pulled in the direction of arrow b, and the end is press-fitted between the locking projections 18. As a result, the locking projection 18 is locked to the locking recess 17, and the operation member 14 is integrated with the mounting member 2. Accordingly, since the operation member 14 is integrated without being rattled even during conveyance, it is not necessary to provide a storage portion for the operation member 14 in the storage box (not shown). Further, it is possible to save the user from attaching the operation member 14 to the attachment member 2.

  When fixing the mounting member 2 to the gypsum board 3, the nail 4 is set as described with reference to FIG. 1, the operation member 14 is rotated as indicated by the arrow A, and the nail 4 is driven in the same manner as described above. Include. Thereafter, when the operation member 14 is pulled as indicated by an arrow B, the top of the nail 4 is detached from the holding portion 15.

  When the operating member 14 is pushed in the direction of arrow C in this state, the locking projection 18 is locked to the locking recess 17 and the operating member 14 is fixed to the mounting member 2. Therefore, the operation member 14 does not protrude into the main body of the fire alarm 5 as shown by the solid line in FIG.

The driving mechanism 11 may be configured as shown in FIG.
In this embodiment, the rotation member 13 is omitted, and a separate fulcrum shaft serving as the fulcrum S is inserted through the slide long hole 19 provided in the operation member 14.

  According to this configuration, the operation member 14 can be moved in the directions of the arrows a and b as in the first embodiment, and can be operated in the directions of the arrows A, B and C. Accordingly, as in the first embodiment, the attachment member 2 can be fixed by driving the nail 4 and the operation member 14 can be fixed to the attachment member 2.

Next, a second embodiment of the present invention will be described with reference to FIGS.
The driving mechanism 11 in this embodiment is provided with a frame-shaped sliding member 26 as an operation member so as to cover the rotating member 25. Both side surfaces of the sliding member 26 are formed in plate-like portions 26a and 26b, and long holes 19 for sliding the entire sliding member 26 in the directions of arrows a and b are formed in the plate-like portions 26a and 26b. ing. The upper and lower surfaces of the sliding member 26 are formed in a plate-like portion having an open front end, and a part of the sliding member 26 (the rear end side of the lower plate-like portion) is bent as shown in FIG. Portions 26c and 26d are formed, and in this portion, the rotating member 25 is substantially surrounded. Note that the fulcrum shaft serving as the fulcrum S is the rotating member 25. Moreover, it is good also as a structure which penetrated the long hole 19 and the rotation member 25 as a separate fulcrum shaft.

  When fixing the mounting member 2, as shown in FIG. 7, the sliding member 26 is slid in the direction of arrow a, the nail 4 is set in the holding portion 15 as indicated by the imaginary line, and the tip thereof is placed in the opening 16. Position. In this state, when the sliding member 26 is rotated in the direction of arrow A (see FIG. 5) as shown in FIG. 8, the nail 4 is driven into the gypsum board 3 by the action of the scissors as described above.

Next, when the sliding member 26 is pulled in the direction of the arrow b, the sliding member 26 comes out of the rotating member 25 and only the sliding member 26 rotates as shown by an imaginary line in FIG.
On the other hand, since the tip of the rotating member 25 is fixed by the nail 4, the rotating member 25 remains in the inclined state as shown in FIGS. 8 and 9, but the notch that has faced the mounting member 2 until then. The shaped locking portion 27 is exposed.

Therefore, when the rotating member 26 is moved back in the direction of the arrow a, the end portion 26e (the end portion of the plate-like portion on the upper surface) of the sliding member 26 is locked to the locking portion 27 as shown in FIG. Cannot rotate. In FIG. 10, the gypsum board 3 is shown on the lower side. However, since the gypsum board 3 is on the upper side in the actual fixed state, the sliding member 26 continues to be locked by its own weight, and does not fall off. Therefore, in this embodiment, the locking protrusion 18 described in the first embodiment is not necessary.

    As described above, the sliding member 26 is fitted to the rotating member 25 and rotated integrally with the rotating member 25 that rotates about the fulcrum S, and the rotating member 25 is released by the fitting release. It can freely rotate with respect to 25 and can be locked to one end of the rotating member 25.

    In this embodiment, if the sliding member 26 is unlocked and the sliding member 26 is fitted to the rotating member 25 again, the nail 4 can be extracted by changing the layout or the like.

    In all the embodiments described above, the nail 4 is set on the holding portion 15 when the mounting member 2 is fixed to the installation surface. However, the nail 4 may be set on the holding portion 15 in advance from the time of packaging. Good.

    In all the above embodiments, the holding portion 15 for holding the nail 4 is provided. However, the holding portion 15 may not be provided, and the nail 4 can be applied to the installation surface with a small force by the lever principle. You can drive in.

    In all the above-described embodiments, the top of the nail 4 does not contact the mounting member 2 due to the shape of the opening 16 and the holding portion 15, but the shape may be changed as appropriate to have a shape that contacts.

  Although the embodiment of the present invention has been described above, the fixing member is not limited to a nail, and has a wood screw, a shallow streak formed in the longitudinal direction, a thing with a rough crest formed in a spiral shape, etc. Can be used.

It is sectional drawing of the fire alarm which shows 1st Example of this invention. It is a top view which shows the structure of an attachment member. It is a perspective view which shows a driving mechanism. It is a perspective view which shows another driving mechanism. It is a perspective view of the driving mechanism which shows 2nd Example of this invention. It is sectional drawing which shows the structure of a sliding member. It is sectional drawing which shows the effect | action of a driving mechanism. It is sectional drawing which shows the driving | operation effect | action of a fixing member. It is sectional drawing which shows the effect | action of a sliding member. It is sectional drawing which shows the fixed effect | action of a sliding member.

Explanation of symbols

1 Fire alarm 2 Mounting member 3 Gypsum board (installation surface)
4 Nails (fixing member)
DESCRIPTION OF SYMBOLS 5 Alarm machine main body 11 Driving mechanism 12a Bearing member 12b Bearing member 13 Rotating member 25 Rotating member 14 Operation member 15 Holding part 16 Opening part 17 Locking recessed part (engaging part)
18 Locking projection 19 Long hole 26 Sliding member 27 Locking part

Claims (5)

In the fire alarm attached to the desired installation surface,
An insertion hole through which the fixing member is inserted into the mounting member fixed to the installation surface and to which the alarm device main body is attached,
A driving mechanism for driving the fixing member into the insertion hole according to the principle of scissors;
A fire alarm characterized by the provision of   The driving mechanism includes an operation member that holds the fixing member at a tip of a short side portion when viewed from a fulcrum, and that rotates the long side portion when viewed from the fulcrum, and a bearing member that rotatably supports the operation member. The fire alarm according to claim 1, further comprising:   The operation member is provided with a long hole along the longitudinal direction so as to be movable in the longitudinal direction, and an engaging portion for locking one end of the operation member is integrally provided on the mounting member. Item 2. Fire alarm device.   The operating member rotates around the fulcrum, and rotates together with the rotating member. The operating member rotates freely with respect to the rotating member when the fitting is released, and the rotation member rotates. The fire alarm according to claim 2, further comprising a sliding member that is engaged with one end of the moving member. Provided between the operation member and the bearing member is a rotation member that is pivotally supported by the bearing member and rotates around the fulcrum, and through which the operation member is inserted. The fire alarm device according to claim 2, wherein the fire alarm device is configured to be movable in a direction and integrally provided with an engaging portion for locking one end of the operation member to the mounting member.

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