JP3889513B2 - Temporary fixing device for ceiling mounting bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temporary fixing device for a ceiling mounting bracket for temporarily fixing a ceiling mounting bracket used when a fire detector is mounted on a ceiling surface to a ceiling mounting hole.
[0002]
[Prior art]
Conventionally, as a ceiling mounting bracket used for mounting a fire detector on a ceiling surface, for example, there is one shown in FIG. 7 (Japanese Utility Model Publication No. 1-24700).
[0003]
In FIG. 7, the base 101 is mounted in the mounting hole 114 of the ceiling board 113 from below. The base 101 has a pair of mounting brackets 107 attached to the back. When mounting the mounting bracket 107 in the mounting hole 114, it stands up like the mounting bracket 107 on the right side, so that it can be arranged through the mounting hole 114 as shown.
[0004]
When the base 101 is fixed, it is tilted outward like the left mounting bracket 107, and in this state, the mounting screw 104 having the nut 104a screwed to the tip is tightened so that the tip of the mounting bracket 107 is attached to the ceiling plate 113. Can be fixed to the ceiling plate 113.
[0005]
[Problems to be solved by the invention]
However, in such ceiling mounting brackets used for mounting conventional fire detectors, when mounting the ceiling mounting bracket, hold the base with one hand so that it does not fall, and tighten the screw with the opposite hand. Since both hands are raised during the fixing work, it becomes difficult work, and at the same time both hands are closed, and when changing the driver, one hand is not released, and there is a problem that workability is poor. It was.
[0006]
Further, when the ceiling mounting bracket itself is an integral member with the base, it is necessary to deform or tilt the mounting bracket and push it in, and there is a problem that it is difficult to pass through the ceiling mounting hole. In addition, when the ceiling mounting bracket has an assembly structure of a plurality of parts, the ceiling mounting hole is passed through in a temporarily assembled state with backlash, so that there is a problem that it takes time to work through the ceiling mounting hole.
[0007]
The present invention has been made in view of such a conventional problem, and provides a temporary fixing device for a ceiling mounting bracket that can be easily and easily assembled to a ceiling mounting hole of the ceiling mounting bracket. With the goal.
[0008]
[Means for Solving the Problems]
In order to achieve this object, the present invention is configured as follows. First, the ceiling mounting bracket in which the temporary fixing device of the present invention is used is a ring base positioned on the front side of the ceiling mounting hole, a sensor locking piece standing up from the ring base, and a pair of mountings inserted through the ring base from below. And a fixing member that is positioned behind the ceiling mounting hole and clamps the opening of the ceiling mounting hole between the ring base and the mounting screw.
[0009]
As a temporary fixing device for a ceiling mounting bracket for retaining such a ceiling mounting bracket in a state where it is inserted into a ceiling mounting hole, the present invention provides a base piece having a through hole on the inside, A pair of mounting hole support pieces that press and contact the inner peripheral surface of the ceiling mounting hole, and a screw support piece that has a through hole that extends horizontally from the tip of the mounting hole support piece and passes the mounting screw of the ceiling mounting bracket. A plate member such as cardboard or cardboard is cut out and bent so as to be integrally formed.
[0010]
A pair of mounting hole support pieces in the temporary fixing device extend the pressing piece by making a crease on both sides, and the pressing piece opens flatly in the state before being installed in the ceiling mounting hole, and inward in the mounting state in the ceiling mounting hole And is in press contact with the inner peripheral surface of the ceiling mounting hole.
[0011]
In addition, the temporary fixing device for the ceiling mounting bracket is used when attaching the ceiling mounting bracket to the ceiling mounting hole.
Set the width of the ceiling mounting hole support piece including the pressing piece bent inward by contact with the ceiling mounting hole so that the mounting screw with the fixing member of the ceiling mounting bracket can fall down and pass through the ceiling mounting hole To do.
[0012]
Furthermore, the through hole of the screw support piece in the temporary fixing device is provided with a notch in a slit state toward the outside.
[0013]
According to such a temporary fixing device for a ceiling mounting bracket of the present invention, when the ceiling mounting bracket is inserted into the ceiling mounting hole in a state assembled to the ceiling mounting bracket, the ceiling mounting bracket can be temporarily fixed and fixed so that the ceiling mounting bracket does not fall off. Therefore, it is not necessary to keep pressing the ceiling mounting bracket so as not to drop, and the bracket mounting operation to the ceiling mounting hole can be easily and easily performed, reducing the work load and increasing the work efficiency.
[0014]
The ceiling mounting bracket is temporarily fixed at the center of the hole by four points of contact with the ceiling mounting hole of the temporary fixing device, and the position relative to the ceiling mounting hole does not change substantially even if the ceiling mounting bracket is turned. Can be positioned.
[0015]
Furthermore, by providing a slit-like notch in the screw hole provided in the screw support piece of the temporary fixing device, the temporary fixing device can be easily pulled out after the ceiling mounting bracket is tightened and fixed in the temporarily fixed state. it can.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of a temporary fixing device for a ceiling mounting bracket according to the present invention, which is shown in an assembled state when mounted on a ceiling mounting bracket.
[0017]
In FIG. 1, a temporary fixing device 1 is formed by cutting, for example, cardboard or cardboard, and is assembled by bending as shown. The temporary fixing device 1 has a rectangular base piece 2, and a rectangular through hole 3 is also opened inside the base piece 2. A pair of mounting hole support pieces 4 are erected at positions of opposite ends of the base piece 2.
[0018]
The mounting hole support piece 4 projects a pressing piece 5 on both sides, and the pressing piece 5 is bent inward when the ceiling mounting bracket is temporarily fixed to the ceiling mounting hole by forming the crease 10. The pressing piece 5 protrudes substantially flat with respect to the mounting hole support piece 4 in the initial assembly state, but when assembled, it is bent slightly inward as shown.
[0019]
A screw support piece 6 is formed on the mounting hole support piece 4 in the outer horizontal direction. The screw support piece 6 forms a screw-through hole 7, and a slit-shaped notch 8 is formed in the screw-through hole 7 toward the outside. The tip of the mounting screw of the ceiling mounting bracket, which will be clarified later from below, is inserted into the screw through hole 7 of the screw support piece 6. Further, a pair of mounting bracket support pieces 9 are erected on both ends orthogonal to the mounting hole support piece 4 erected on the base piece 2.
[0020]
FIG. 2 is a development view of the temporary fixing device 1 of FIG. As is clear from the development of FIG.
The temporary fixing device 1 has a base piece 2 in the center, extends a pair of mounting hole support pieces 4 through notches on the top and bottom of the base piece 2, and includes a screw-through hole 7 with a notch 8 at its tip. A screw support piece 6 is formed, and pressing pieces 5 are projected on both sides. A pair of mounting bracket support pieces 9 extend on the left and right sides of the base piece 2.
[0021]
The unfolded temporary fixing device 1 is produced by punching a corrugated cardboard or cardboard having a thickness of about 0.5 to 2.0 millimeters, and a broken line crease 10 is simultaneously inserted when punching. When the ceiling mounting bracket is temporarily fixed, it is assembled as shown in FIG.
[0022]
FIG. 3 is an explanatory view of a ceiling mounting bracket to which the temporary fixing device 1 according to the present invention of FIG. 1 is applied. 3A is a rear view, FIG. 3B is a plan view, FIG. 3C is a front view, and FIG.
Is a bottom view, (E) is a left side view, and (F) is a right side view.
[0023]
For example, when viewing the plan view of FIG. 3B and the front view of FIG. 3C, the ceiling mounting bracket 11 has a ring base 14, and a fire detector is fitted into the ring base 14 from below and fixed. Hold. Mounting screws 15 are fitted into two places of the ring base 14 from below, and fixing members 16 are screwed into the screw portions of the mounting screws 15, respectively.
[0024]
When the ring base 14 of the ceiling mounting bracket 11 is positioned on the front side (lower side) of the ceiling mounting hole, the fixing member 16 is positioned on the back side (upper side) of the ceiling mounting hole, and when the mounting screw 15 is tightened in this state, the fixing member 16 is lowered, and the ceiling plate is fastened and fixed between the ring base 14 and the fixing member 16.
[0025]
The mounting screw 15 fitted into the ring base 14 from the lower side is loosely fitted into the threaded hole of the ring base 14, and the front end side into which the fixing member 16 is screwed is placed inside to pass the ceiling mounting hole. Can tilt.
[0026]
FIG. 4 is an explanatory diagram of a state in which the temporary fixing device 1 of FIG. 1 is temporarily fixed to the ceiling mounting hole in a state where it is assembled to the ceiling mounting bracket 11 of FIG. Here, FIG. 4A is a plan view seen from the back of the ceiling, and FIG. 4B is a front view with a cross section of the ceiling plate.
[0027]
First, assembly of the temporary fixing device 1 of the present invention to the ceiling mounting bracket 11 is shown in FIG.
As apparent from FIG. 4, the mounting hole support piece 4 of the temporary fixing device 1 is fitted into the opening of the ring base 14 of the ceiling mounting bracket 11 from below, and the screw of the screw support piece 6 at the tip of the mounting hole support piece 4 The tip of the mounting screw 15 is fitted into the through hole 7. By attaching the temporary fixing device 1 to the ceiling mounting bracket 11 in this way, the mounting screw 15 into which the fixing member 16 is screwed is held in an upright state and its movement is restricted only to the inside and the outside.
[0028]
As is apparent from the plan view of FIG. 4A, both sides of the mounting hole support piece 4 of the temporary fixing device 1 in the temporarily fixed state of the mounting bracket support piece 9 by the temporary fixing device 1 with respect to the circular ceiling mounting hole 13. The pressing piece 5 formed in the above is bent inward from the substantially flat pressing piece 5a along the mounting hole support piece 4, and the tip of the pressing piece 5 is pressed into contact with the inner peripheral surface of the circular ceiling mounting hole 13. is doing.
[0029]
Accordingly, the temporary fixing device 1 supports the ceiling mounting bracket 11 at four points with respect to the ceiling mounting hole 13 and is centered on the center O of the ceiling mounting hole 13. Further, the attachment hole support piece 4 of the temporary fixing device 1 is in an upright state with the attachment screw 15 supported by the screw support piece 6 as shown in FIG. And the fixing member 16 is prevented from falling off from the opening end of the ceiling mounting hole 13, and the ceiling mounting bracket 11 is finally fixed as shown in FIG. The base 14 is held in contact with the ceiling plate 12 to prevent the ceiling mounting bracket 11 from falling.
[0030]
Further, as is apparent from the plan view of FIG. 4A, the pair of mounting bracket support pieces 9 erected at a position orthogonal to the mounting hole support piece 4 of the temporary fixing device 1 is a guide erected on the ceiling mounting bracket 11. Positioning and pressing contact with the cutout portion inside the piece 17, the positioning between the ceiling mounting bracket 11 and the temporary fixing device 1 is performed.
[0031]
Furthermore, in FIG. 4 (A), by incorporating the temporary fixing device 1 into the ceiling mounting hole 13,
In order to support at four points by the pressing piece 5, the width W1 of the mounting hole supporting piece 4 including the pressing piece 5a in the flat state before assembly is set to the horizontal distance D between the pair of mounting hole supporting pieces 4. W0 <W1 between the vertical width W0 at the intersection with the ceiling mounting hole 13
To have a dimensional relationship.
[0032]
By making the width W0 smaller than the width W1 in this way, the pressing piece 5 is bent inward from the flat pressing piece 5a in the state of being incorporated in the ceiling mounting hole 13, and the pressing piece 5 is pressed at four points. Can be supported by contact.
[0033]
Also, W2 <W3 between the widths W2 and W3 taken out on the right side in FIG.
The dimensional relationship is given. Here, the width W2 is an interval in a support state in which the temporary fixing device 1 is assembled in the ceiling mounting hole 13 and the pressing piece 5 is bent inward. On the other hand, the width W3 is a width when the pair of guide pieces 17 of the ceiling mounting bracket 11 is viewed from the right side. By temporarily reducing the width W2 of the pressing piece 5 bent inward of the temporary fixing device 1 with respect to the width W3 of the guide piece 17, the temporary fixing device 1 assembled to the ceiling mounting bracket 11 in the ceiling mounting hole 13 can be provided. 4B, when the ring base 14 side in FIG. 4B is used as a fulcrum, the mounting screw 15 screwed into the tip of the fixing member 16 is tilted inward. Is not disturbed.
[0034]
FIG. 5 shows a work procedure when the ceiling mounting bracket 11 is temporarily fixed by the temporary fixing device 1 in the ceiling mounting hole 13 provided in a circular shape on the ceiling plate 12 as shown in FIG.
[0035]
First, as shown in FIG. 5A, the temporary fixing device 1 is assembled to the ceiling mounting bracket 11, and in this state, the mounting screw 15 is tilted inward so that the fixing member 16 enters the ceiling mounting hole 13 of the ceiling plate 12. . At this time, in FIG. 4A, W2 <W3
Therefore, the mounting screw 15 can be easily tilted inward without being obstructed by the guide piece 17.
[0036]
In this way, when the ceiling mounting bracket 11 with the temporary fixing device 1 assembled into the ceiling mounting hole 13 is inserted and the hand is released, the mounting hole support piece 4 is opened by restoring force, and a temporarily fixed state as shown in FIG. 4 is obtained. . In this temporarily fixed state, as shown in FIG. 5B, the operator rotates the mounting screw 15 with a screwdriver so that the mounting hole support piece 4 rotates the fixing member 16 located on the back side (upper side) of the ceiling mounting hole 13. The ceiling mounting bracket 11 is fixed by sandwiching the ceiling plate 12 around the opening of the ceiling mounting hole 13 between the ring base 14 and the fixing member 16 as shown in FIG.
[0037]
When the ceiling mounting bracket 11 is fixed to the ceiling mounting hole 13, the temporary fixing device 1 is once pulled inward as indicated by the arrow A and then pulled out as indicated by the arrow B. At this time, the through hole 7 of the screw support piece 6 into which the tip of the mounting screw 15 is fitted has a slit-shaped notch 8 as shown in FIG. It can be removed from the screw 15.
[0038]
If the temporary fixing device 1 is removed as shown in FIG. 5C, the fire detector 20 having the structure shown in FIG. 6A, for example, is placed under the ceiling mounting bracket 11 fixed to the ceiling mounting hole 13. Can be installed by inserting from
[0039]
The fire detector 20 of FIG. 6A is provided with a pair of locking springs 21 on both sides of the upper part located in the ceiling. For this reason, when the fire detector 20 is fitted into the ceiling mounting bracket 11 from the lower side as shown in FIG. 6B, the locking spring 21 is opened in the guide piece 17 of the ceiling mounting bracket 11. 18 and the fire detector 20 can be fixed to the ceiling mounting bracket 11.
[0040]
Here, the temporary fixing device 1 of the present invention shown in FIG. 1 is assembled in advance to the ceiling mounting bracket 11 shown in FIG. 3 at the time of factory shipment, for example, as shown in FIG. For this reason, the operator simply removes the ceiling mounting bracket 11 with the temporary fixing device 1 packed in a box, folds the mounting screw 15 inward and pushes it into the ceiling mounting hole 13 as shown in FIG. it can. If temporary fixing is possible, the fixing operation to the ceiling mounting hole 13 as shown in FIG. 5C is completed by simply turning the mounting screw 15 with one hand as shown in FIG. 5B. It is only necessary to pull out the device 1.
[0041]
Further, when an operator removes the box-mounted ceiling mounting bracket 11 with the temporary fixing device 1, the operator mistakes that the temporary fixing device 1 is merely a support member for packaging and pulls it off the ceiling mounting bracket 11. It is possible. In order to prevent this, it is desirable to display a cautionary note that the temporary fixing device 1 is inserted into the ceiling mounting hole 13 as it is without being removed, for example, on the surface of the base piece 2.
[0042]
In addition, in order to prevent forgetting to remove the temporary fixing device 1 after the installation work of the ceiling mounting bracket 11 is completed, a notice to the effect that the temporary fixing device 1 is to be removed is displayed in the same manner after the installation is completed. Also good.
[0043]
【The invention's effect】
As described above, according to the temporary fixing device for a ceiling mounting bracket of the present invention, when mounted on the ceiling mounting hole in a state assembled to the ceiling mounting bracket, it can be temporarily fixed and fixed in that state. Since it is not necessary for the operator to attach the metal fitting while holding it with one hand, the work load can be reduced and the work efficiency can be improved.
[0044]
In addition, the ceiling mounting bracket is supported at four points by the temporary fixing device with respect to the ceiling mounting hole, so that it can be centered and temporarily fixed to the approximate center of the ceiling mounting hole, and can be turned to change the position of the ceiling mounting bracket. However, the centering state with respect to the ceiling mounting hole can be maintained.
[0045]
In addition, since a slit-shaped notch is provided in the screw hole provided in the screw support piece of the temporary fixing device, after the ceiling mounting bracket is tightened and fixed, the temporary fixing device is easily detached and the fire sensor is attached. can do.
[Brief description of the drawings]
FIG. 1 is an explanatory view of an assembled state of a temporary fixing device of the present invention. FIG. 2 is a development view of FIG. 1. FIG. 3 is an explanatory view of a ceiling mounting bracket used in the present invention. FIG. 5 is an explanatory diagram of the mounting operation of the ceiling mounting bracket using the temporary fixing device of the present invention. FIG. 6 is an explanatory diagram of the mounting structure of the fire detector to the ceiling mounting bracket. ] Explanation of base mounting brackets for conventional ceiling mounting holes [Explanation of symbols]
1: Temporary fixing device 2: Base piece 3: Through hole 4: Mounting hole support piece 5: Pressing piece 6: Screw support piece 7: Screw through hole 8: Notch 9: Mounting bracket support piece 10: Fold 11: Ceiling mounting Metal fitting 12: Ceiling board 13: Ceiling mounting hole 14: Ring base 15: Mounting screw 16: Fixing member 17: Guide piece 18: Locking hole 20: Fire detector 21: Locking spring

Claims (4)

A ring base positioned on the front side of the ceiling mounting hole, a sensor locking piece erected from the ring base, a pair of mounting screws inserted from below into the ring base, and a mounting base positioned on the back side of the ceiling mounting hole. A ceiling mounting bracket temporarily holding device having a fixing member sandwiching an opening of the ceiling mounting hole by tightening, and holding the retaining member in a state of being inserted into the ceiling mounting hole.
A base piece having a through hole on the inside, a pair of mounting hole support pieces standing on both sides of the base piece and pressing the side ends against the inner peripheral surface of the ceiling mounting hole, and horizontally horizontally from the tip of the mounting hole support piece A temporary fixing device for a ceiling mounting bracket, wherein the plate member is cut and bent so as to integrally form a screw support piece having a through hole extending in a direction and through which a mounting screw of the ceiling mounting bracket is passed. 2. The temporary fixing device for a ceiling mounting bracket according to claim 1, wherein the pair of ceiling mounting hole support pieces folds on both sides to extend the pressing pieces, and the pressing pieces are not attached to the ceiling mounting holes. The ceiling-mounting bracket temporary fixing device, wherein the ceiling-mounting bracket is temporarily opened and bent inwardly in a state of being mounted in the ceiling-mounting hole, and is pressed into contact with the inner peripheral surface of the ceiling-mounting hole. 3. The temporary fixing device for a ceiling mounting bracket according to claim 2, wherein when the ceiling mounting bracket is mounted in the ceiling mounting hole, a mounting screw on which the fixing member of the ceiling mounting bracket is mounted falls down to the ceiling mounting hole. A temporary fixing device for a ceiling mounting bracket, wherein a lateral width of the ceiling mounting hole supporting piece including a pressing piece bent inward by contact with the ceiling mounting hole is set. 2. The temporary fixing device for a ceiling mounting bracket according to claim 1, wherein the through hole of the screw support piece is provided with a slit-shaped notch toward the outside.

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