JP4845769B2 - Hanging equipment fixtures, fall prevention pieces, and hanging equipment units - Google Patents

Description

  The present invention relates to a ceiling-suspended device fixture, a fall prevention piece for the fixture, and a suspension device unit provided with the fixture, and more specifically, a dome shape having a fall-proof piece of a decorative cover. The present invention relates to a mounting bracket for a surveillance camera and a ceiling-suspended device unit including the mounting bracket.

2. Description of the Related Art Conventionally, there is a dome type surveillance camera embedded so as not to stand out on the ceiling of a building (see, for example, Patent Document 1). In addition to the one described in Patent Document 1, there is a dome type surveillance camera shown in FIGS. 6 (a) and 6 (b).
The dome-type surveillance camera (7) is embedded in an opening (60) opened in the ceiling (6) through a mounting bracket (1). The mounting bracket (1) is formed by bending a metal plate, and includes a cylindrical support (10) whose upper surface is closed and a casing (11) extending outward from the lower end of the support (10). Provide one. A screw shaft (4) is inserted from the lower side of the housing (11), and the screw shaft (4) is fitted into a washer (40) provided on the housing (11) to prevent the screw shaft (4) from falling. A holding piece (8) is provided at the tip of the screw shaft (4), and the holding piece (8) is slanted from the horizontal plate (80) screwed to the screw shaft (4) and the horizontal plate (80). The first swash plate (81) extending downward and the second swash plate (82) bent and extended obliquely upward from the lower end of the first swash plate (81) are integrated to be elastic. It is formed to be deformable. The second swash plate (82) is loosely fitted to the screw shaft (4), and the end surface of the horizontal plate (80) is in contact with the side plate of the support (10). When the screw shaft (4) is rotated, the holding piece (8) is rotated, but cannot be rotated because the horizontal plate (80) is in contact with the support (10). Accordingly, the pressing piece (8) moves up and down.

To attach the mounting bracket (1) to which the dome type surveillance camera (7) is attached to the periphery (61) of the opening (60), as shown in FIG. 6 (a), the support (10) is opened (60). Insert it upwards. The first swash plate (81) of the pressing piece (8) hits the peripheral edge (61), but the first swash plate (81) is deformed inward and passes through the opening (60). When the first swash plate (81) passes through the opening (60), the first swash plate (81) is elastically restored as shown in FIG. 6 (b). The frame (11) contacts the lower surface of the ceiling (6).
Thereafter, when the head of the screw shaft (4) is rotated from below by a screwdriver, the pressing piece (8) is lowered. The lower end of the first swash plate (81) is in contact with the upper surface of the ceiling (6), and the ceiling (6) is sandwiched between the pressing piece (8) and the housing (11). In this way, the mounting bracket (1) is attached to the ceiling (6).
Thereafter, as shown in FIG. 7 (a), a decorative cover (2) is attached to the lower surface of the ceiling (6) to cover the housing (11) and to hide the mounting bracket (1). A person located below the ceiling (6) does not see the mounting bracket (1), but only the lower end of the dome-type surveillance camera (7). If the lower end of the dome-type surveillance camera (7) is colored, the person located below the ceiling (6) will not be aware of the presence of the surveillance camera (7).
The decorative cover (2) may be removed from the ceiling (6) due to replacement or repair of the surveillance camera (7). At this time, if the decorative cover (2) falls carelessly, the decorative cover (2) is not only damaged, but there is a risk of damaging a person located below the ceiling (6). Therefore, the decorative cover (2) and the casing (11) are connected by the fall prevention piece (3) which is a flexible thin piece, and the decorative cover (2) is attached to the ceiling as shown in FIG. It prevents falling when removed from (6). In FIGS. 6 (a) and 6 (b), the fall prevention piece (3) is attached to the housing (11) in advance, but it may be attached to the decorative cover (2) in advance.

  Prior to attaching the dome type surveillance camera (7) to the ceiling (6), it is necessary to open an opening (60) in the ceiling (6). In order to indicate the size of the opening (60), when the dome type surveillance camera (7) is sold, a circular seal (9) shown in FIG. 8 is pasted together with the mounting bracket (1) and the decorative cover (2). The mount (90) is included. The diameter D1 of the seal (9) is much larger than the outer shape of the support (10) and is large enough for the support (10) to pass through. When opening the opening (60) in the ceiling (6), the installer removes the seal (9) from the mount (90) and attaches it to the ceiling (6), along the periphery of the seal (9). Draw a marking line. An opening (60) is opened along the marking line.

JP 2000-244782 A

Conventionally, the seal (9) may be peeled off from the ceiling (6) when the installer (60) opens the work, and workability is poor. Further, since it is necessary to apply an adhesive to the back surface of the seal (9) and to draw a marking line on the periphery of the seal (9), the cost is increased.
It is also possible to enclose a flat compass made from paper and draw a circle with the flat compass on the ceiling (6) each time the installer opens the opening (60). . However, not only the number of components increases by the amount of the flat compass, but the flat compass is discarded after use, so that the amount of dust increases.
The applicant has conceived of making the work of drawing a circle to be the opening (60) easier when the opening (60) is opened.
An object of the present invention is to facilitate the work of drawing a circle to be an opening when opening an opening in a ceiling for mounting a ceiling-suspended device.

The fall prevention piece (3) fits into the opening (60) of the ceiling (6) and has a cylindrical support (10) for hanging and supporting the device, and a hook protruding outward from the lower end of the support. One end is detachably attached to a mounting bracket (1) having a body (11),
The other end is detachably attached to the cover body covering the housing (11),
Holes are formed at both ends, and the distance between the holes is formed to be larger than half of the outer diameter of the support (10).

The fall prevention piece (3) can be removed from the casing (11) and the decorative cover (2) and used as a compass for drawing a circle on the ceiling (6). First, put the fall prevention piece (3) against the ceiling (6), put the writing instrument into the other first long hole (30) and rotate it around the first long hole (30), and scribing work I do. On the ceiling (6), a circle having a radius that is a length much larger than half of the outer diameter of the support (10) is drawn. If the opening (60) is formed in the ceiling (6) along this circular line, the support (10) can be smoothly fitted into the opening (60).
In the present invention, the fall prevention piece (3) that prevents the decorative cover (2) from falling off is provided with a function as a compass, so that the cost can be reduced without increasing the number of components and the ceiling (6). A circle to be the opening (60) can be drawn. Further, unlike the prior art, there is no need to attach the seal (9) to the ceiling (6), and the workability is good.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of the mounting bracket (1) and the decorative cover (2) of this example, and FIG. 2 is a bottom view of the mounting bracket (1) and a plan view of the decorative cover (2). In FIG. 1, the mounting bracket (1) of FIG. 2 is broken along the plane including the line AA, and the decorative cover (2) is broken along the plane including the line BB.
The decorative cover (2) is an annular member that covers the housing (11), and the dome-type surveillance camera installer has a dome-type surveillance camera, a mounting bracket (1), a cosmetic cover (2), and the fall prevention described later. The piece (3) is sold as a bundled surveillance camera unit.
As in the prior art, the mounting bracket (1) is integrally provided with a cylindrical support (10) whose upper surface is closed and a housing (11) extending outward from the lower end of the support (10). Yes. As in the prior art, the mounting bracket (1) is attached to the ceiling (6) by holding the ceiling (6) between the holding piece (8) screwed to the screw shaft (4) and the housing (11). In FIG.1 and FIG.2, illustration of a holding piece (8) and a dome type surveillance camera (7) is omitted.

  The decorative cover (2) is made of a synthetic resin, and as shown in FIG. 1, a locking piece (20) is provided upward from the peripheral edge. On the peripheral edge of the casing (11), a recess (12) is provided for engaging the locking piece (20). When the decorative cover (2) is attached to the casing (11), the locking piece (20) is elastically deformed outward and fitted into the recess (12). The casing (11) and the decorative cover (2) are connected by a fall prevention piece (3) which is flexible, specifically, a thin piece formed by cutting out a resin sheet, and the decorative cover (2) is removed. However, the decorative cover (2) does not fall carelessly.

As shown in FIG. 2, a locking screw (50) with a washer (5) is screwed onto the housing (11) near the head of the screw shaft (4). A locking screw (50) with a washer (5) is screwed onto the decorative cover (2), and both washers (5) and (5) have the same outer diameter. The washer (5) is in contact with the head of the locking screw (50), and corresponds to the thickness of the fall prevention piece (3) between the washer (5) and the housing (11) or the decorative cover (2). The gap m is vacant (see FIG. 1).
The fall prevention piece (3) is attached with one end detachably fitted in the gap m between the housing (11) and the washer (5) and the other end detachably fitted into the gap m between the decorative cover (2) and the washer (5). It is done.
The fall prevention piece (3) has a first elongated hole (30) and a second elongated hole (32) located inside the first elongated hole (30) at both ends. The longitudinal direction of both long holes (30) and (32) coincides with the longitudinal direction of the fall prevention piece (3), and the second long hole (32) is wider than the first long hole (30). The long holes (30) and (32) communicate with each other by the notches (31). The distance L1 between the outer ends of the first long holes (30) and (30) is formed to be larger than half of the outer diameter of the support (10). The first long holes (30) and (30) fit into the gap m. The diameter of the washer (5) is larger than the width of the first long hole (30), and the fall prevention piece (3) is prevented from falling off the washer (5).

The fall prevention piece (3) is removed from the housing (11) and the decorative cover (2) and can be used as a compass for drawing a circle on the ceiling (6).
FIG. 3 is a diagram showing an operation when the fall prevention piece (3) is used as a compass. First, the fall prevention piece (3) is put on the ceiling (6), and a pin (37) is inserted into the outer end of one first elongated hole (30). Next, the tip of the pencil (38) is inserted into the outer end of the other first elongated hole (30) and the tip of the pencil (38) is inserted around the pin (37). Rotate to perform scribing work. A circle with a radius L1 is drawn on the ceiling (6). As described above, since the distance L1 is larger than half of the outer diameter of the support (10), the drawn circle is larger than the outer diameter of the support (10). After drawing the circle, the fall prevention piece (3) is attached to the housing (11) and the decorative cover (2) to prevent the decorative cover (2) from falling. If the opening (60) is formed in the ceiling (6) along this circular line, the support (10) can be smoothly fitted into the opening (60).

That is, in this example, the fall prevention piece (3) that prevents the decorative cover (2) from falling off has a function as a compass, thereby reducing the cost without increasing the number of components, and the ceiling (6). A circle to be the opening (60) can be drawn on. Further, unlike the prior art, there is no need to attach the seal (9) to the ceiling (6), and the workability is good. In addition, drawing the circle on the ceiling (6) using the fall prevention piece (3) like a compass is described in the attached installation instructions along with the mounting bracket (1) and the decorative cover (2). deep.
In some cases, an electric wire for the surveillance camera (7) is drawn out from the opening (60). In this case, the opening (60) needs to be formed to have a diameter larger than the outer diameter of the support (10). For this reason, on the fall prevention piece (3), the outer end of the first elongated hole (30) is formed outside the first elongated hole (30) so that a circle having a radius larger than α can be drawn by α. A small hole (33) is opened at a position away from the portion by α (see FIG. 1).
It is also conceivable to set the distance between the outer end portions of the second elongated hole (32) to L1. However, generally, during scribing, the fall prevention piece (3) is pulled outward along the longitudinal direction at the tip of the pencil (38), so when the pencil (38) is inserted into the second slot (32), There is a possibility that the tip of (38) may inadvertently move through the cut (31) to the first slot (30). Therefore, in order to eliminate such a fear, the distance between the end portions of the first long hole (30) that does not have a cut or the like on the outside is set to L1.

The drop prevention piece (3) of this example has a first elongated hole (30) and a second elongated hole (32) wider than the first elongated hole (30) communicated with each other by a cut (31). (5) It can be smoothly attached to the set screw (50).
4 (a) and 4 (b) are views showing a state in which the fall prevention piece (3) is attached to the retaining screw (50) with the washer (5) on the housing (11) or the decorative cover (2). . First, as shown to Fig.4 (a), the fall prevention piece (3) is arrange | positioned so that the 2nd long hole (32) may be located beside the set screw (50) with a washer (5). Next, as shown in FIG. 4 (b), while lifting the right side of the fall prevention piece (3), the fall prevention piece (3) is moved to the stop screw (50), and the second elongated hole (32) Put the left end under the washer (5). After moving the fall prevention piece (3) to the right as it is, lower the right side of the fall prevention piece (3) and attach the washer (5) to the second slot (32) as shown in Fig. 5 (a). Fit the set screw (50).
Next, the fall prevention piece (3) is slid in the direction of arrow C, and the set screw (50) and the notch (31) are applied. The notch (31) is elastically deformed so as to spread by the retaining screw (50). The fall prevention piece (3) is slid, and as shown in FIG. 5 (b), a set screw (50) with a washer (5) is positioned in the first long hole (30). When the notch (31) passes through the set screw (50), the notch (31) is elastically restored and joined. As described above, the fall prevention piece (3) can be removed from the housing (11) or the decorative cover without removing the retaining screw (50) with the washer (5) from the housing (11) or the decorative cover (2). It can be easily attached to (2) and has good workability.
To attach the fall prevention piece (3) to the retaining screw (50) with the washer (5) on the housing (11) or the decorative cover (2), install the mounting bracket (1) on the ceiling (6). The fall prevention piece (3) is bundled with the mounting bracket (1). However, the fall prevention piece (3) may be shipped to the installation supplier with the drop prevention piece (3) attached to the mounting bracket (1) in advance.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
In this example, the dome type surveillance camera (7) is exemplified as the device to be suspended from the ceiling (6). However, the present invention is not limited to this, and for example, a projector or the like may be used.

It is sectional drawing of a mounting bracket and a decorative cover. It is the bottom view of a mounting bracket, and the top view of a decorative cover. It is a figure which shows the operation | work at the time of using a fall prevention piece as a compass. (a), (b) is a figure which shows the state which attaches a fall prevention piece to the stop screw with a washer on a housing or a decorative cover. (a), (b), (c) is a figure which shows the state which attaches a fall prevention piece to the stop screw with a washer on a housing or a decorative cover. (a), (b) is a figure which shows the state which attaches the conventional mounting bracket to a ceiling. (a), (b) is a figure which shows the state which attaches the conventional mounting bracket to a ceiling. It is a front view of a seal.

Explanation of symbols

(1) Mounting bracket
(2) Cosmetic cover
(3) Fall prevention piece
(6) Ceiling
(10) Support
(11) Body
(30) 1st slot

Claims (6)

One end is detachably attached to a mounting bracket that includes a cylindrical support that is fitted into the ceiling opening and supports the device in a suspended manner, and a housing that protrudes outward from the lower end of the support.
The other end is detachably attached to the cover body covering the housing,
The fall prevention piece for preventing the fall of the cover body in which the several hole was opened and the distance between the outer side edge parts of at least 2 hole was formed much larger than half of the outer diameter of a support body. The fall prevention piece according to claim 1, wherein a hole is opened at least at both ends, the hole at one end is detachably attached to the mounting bracket, and the hole at the other end is detachably attached to the cover body. The hole is a first elongated hole opened at both ends of the fall prevention piece, and a second elongated hole wider than the first elongated hole is formed inside the first elongated hole on the fall prevention piece via a notch. The fall prevention piece according to claim 1 or 2 which communicated. The fall prevention piece according to claim 3, wherein a hole is formed outside the first long hole on the fall prevention piece. A cylindrical support that fits into the opening of the ceiling and supports the device in a suspended manner, and a housing that protrudes outward from the lower end of the support,
One end of a fall prevention piece for preventing the fall of the cover body connected to the cover body covering the housing is detachably attached to the housing,
A mounting tool for a hanging type apparatus in which holes are formed at both ends of the fall prevention piece and the distance between the outer ends of both holes is formed to be larger than half of the outer diameter of the support. A mounting bracket comprising a cylindrical support body that is fitted into the opening of the ceiling and supports the device in a suspended manner, and a housing that protrudes outward from the lower end of the support body,
Equipment supported by the mounting bracket,
A cover body covering the housing,
A fall prevention piece for preventing the fall of the cover body connecting the mounting bracket and the cover body,
One end of the fall prevention piece is detachably attached to the housing or the cover body,
A suspension-type device unit in which holes are formed at both ends of the fall prevention piece, and the distance between the outer ends of both holes is formed to be larger than half of the outer diameter of the support.

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