JP5310481B2 - Ceiling mechanism - Google Patents

Description

  The present invention relates to a ceiling hanging mechanism used when a device such as a wireless LAN base station is attached to a ceiling.

  The conventional ceiling-mounting mechanism inserts a locking portion provided at the end of an L-shaped fixing piece into a rotation groove provided in a base of a radio antenna device or the like, and a fixing provided at the rotation center of the fixing piece. When screwing the fixing screw into the screw hole and installing the device in the mounting hole provided on the ceiling, turn the fixing screw with a screwdriver to rotate the fixing piece to the outside of the mounting hole. Tighten and fix while locking, and remove the device, loosen the fixing screw with a screwdriver, rotate the fixing piece in the opposite direction of the ceiling plate, and lock it to the other end of the rotation slot to remove ( For example, see Patent Document 1.)

JP 2009-30418 A (paragraph 0008-0011, FIG. 4)

  However, in the above-described conventional technology, the device is attached and removed by tightening or loosening the fixing screw with a screwdriver. Therefore, when the device is installed, replaced, or maintained, the device is installed and / or removed. Or there is a problem that it takes time for the removal work, and the work efficiency is lowered.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide means for attaching and detaching an apparatus without using a tool.

  In order to solve the above-described problems, the present invention provides a ceiling hanging mechanism including a fixture fixed to a ceiling surface and a fixture for attaching a device to the fixture. The fixture is fixed to a substrate. A mounting boss having a shaft portion and a head portion provided at a tip of the shaft portion; and a telescopic protrusion that is juxtaposed with the mounting boss on the substrate and whose tip extends and contracts in the vertical direction of the substrate, A fixture is provided at the center of the mounting plate and a main body in which a mounting plate and a base plate arranged in parallel with the mounting plate are connected in a U-shape, and engages the shaft portion. A guide portion that guides the engagement of the engagement portion with the shaft portion, and a guide groove that is provided on the base plate and guides the tip of the telescopic protrusion when the fixture is rotated. It is characterized by.

  As a result, the present invention can easily attach and detach the fixture provided on the device to the fixture fixed to the ceiling surface without using a tool. Or the effect that the working efficiency at the time of a maintenance can be improved is acquired.

Explanatory drawing which shows the ceiling hanging mechanism of an Example Explanatory drawing which shows the side surface of the fixing tool of an Example. Explanatory drawing which shows the cross section of the expansion-contraction protrusion of an Example Explanatory drawing which shows the cross section of the fixture of an Example. Explanatory drawing which shows the upper surface of the fixture of an Example. Explanatory drawing which shows the installation work of the apparatus of an Example Explanatory drawing which shows the removal operation | work of the apparatus of an Example. Explanatory drawing which shows the removal operation | work of the apparatus of an Example.

  Embodiments of a ceiling hanging mechanism according to the present invention will be described below with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a ceiling hanging mechanism, which is composed of a fixture 2 fixed to the ceiling surface and a fixture 12 (described later) for attaching a device such as a wireless LAN base station (not shown) to the fixture 2. The

  Reference numeral 3 denotes a substrate of the fixture 2, which is fixed to the ceiling surface with a small screw or the like (not shown).

  Reference numeral 4 denotes a mounting boss, which is formed with a smaller diameter shaft portion 5 erected on the substrate 3 and a diameter larger than the shaft portion 5 at the tip opposite to the fixed end of the shaft portion 5 as shown in FIG. It is formed with a large-diameter head 6.

  Reference numeral 7 denotes a telescopic protrusion, which is arranged in parallel with the mounting boss 4 at a predetermined interval on the substrate 3 and has a cylindrical shape in which the outer peripheral surface is loosely fitted to the inner peripheral surface of the cylindrical body portion 8 as shown in FIG. The protruding and protruding portion 9 is formed by urging in the opposite direction of the substrate 3 by the urging force of a spring member 10 such as a compression coil spring, and the outer peripheral surface of the end portion of the body portion 8 is fixed to the substrate 3. It is configured to be fitted and fixed in the hole 3 a (see FIG. 2), and the tip of the protruding part 9 is configured to expand and contract in the vertical direction of the substrate 3.

  12a is a main body of the fixture 12, and as shown in FIG. 4, the attachment plate 13 disposed above and the base plate 14 disposed below and parallel to the attachment plate 13 are connected by a connecting portion 15. In addition, it is formed so as to have a U-shaped cross-sectional shape, and is fixed to the central portion of the surface on the ceiling side of the apparatus with a small screw (not shown) or the like.

  Note that the fixture 12 may be integrally formed as a base plate 14 with a frame plate constituting a surface on the ceiling side of the apparatus.

  4 is a cross-sectional view taken along the line AA shown in FIG.

  Reference numeral 17 denotes an engaging portion. As shown in FIG. 5, a semi-oval cutout provided at the center of the mounting plate 13, and at the opposite end of the connecting portion 15, A guide portion 18 formed by two inclined surfaces that expand toward the opposite end face of the connection portion 15 is provided, and the shaft portion 5 of the mounting boss 4 that is guided by the guide portion 18 and pushed in is engaged. .

  A fitting hole 19 has a diameter equivalent to that of the head 6 of the mounting boss 4 formed coaxially with the center of the semicircular arc of the engaging portion 17 on the base plate 14 side (referred to as the inner side) of the mounting plate 13. The head 6 of the mounting boss 4 in which the shaft portion 5 is engaged with the engaging portion 17 is fitted (see FIG. 1).

  In addition, a positioning projection 19 a that fits in a positioning hole 6 a that is a through hole provided in the head 6 of the mounting boss 4 is provided upright on the bottom surface of the fitting hole 19.

  Reference numeral 21 denotes a rotation center hole, which is a hole having a diameter equivalent to that of the head 6 of the mounting boss 4 formed at a position of the base plate 14 facing the fitting hole 19 of the mounting plate 13. At the time of detachment from the fixture 2, the head 6 of the mounting boss 4 is fitted (see FIG. 7) and functions as a center of rotation when the fixture 12 is rotated.

  Reference numeral 23 denotes a guide groove formed in the base plate 14, and as shown in FIG. 5, one end of each of the two arcs centering on the center of the fitting hole 19 of the mounting plate 13 is connected to the protruding portion of the telescopic protrusion 7. 9 is a circular arc groove which is connected by a semicircular arc having a radius equivalent to the radius of 9 and has an open end to the side surface of the base plate 14 at the other end, and rotates when the fixture 12 is removed from the fixture 2. When the fixture 12 is rotated around the center hole 21, it has a function of guiding the movement of the tip of the projecting part 9 of the telescopic protrusion 7 (see FIG. 8).

  A semicircular arc formed at one end of the guide groove 23 functions as a locking portion 23 a when aligning the positioning hole 6 a of the head 6 and the positioning projection 19 a of the fitting hole 19.

  When the device is attached to the fixture 2 using the fixture 12 provided in the device to the fixture 2 fixed to the ceiling surface, as shown in FIG. The base plate 14 of the fixture 12 is pressed against the tip of the bracket 9 to push the protruding and recessed portion 9 in the direction of the substrate 3, and the head 6 of the mounting boss 4 is positioned between the mounting plate 13 of the fixture 12 and the base plate 14. Then, the engaging portion 17 formed on the mounting plate 13 is pushed along the guide portion 18 in the direction of the shaft portion 5 of the mounting boss 4 to engage the engaging portion 17 and the shaft portion 5.

  At this time, the guide groove 23 formed in the base plate 14 of the fixture 12 moves in the direction of the telescopic protrusion 7, and the tip of the protruding and recessed portion 9 is automatically fitted into the guide groove 23 by the biasing force of the spring member 10. When the device is pulled back to the opposite side of the ceiling while pressing the protruding portion 9 against the locking portion 23a of the guide groove 23, the positioning hole 6a of the head 6 of the mounting boss 4 and the positioning projection 19a of the fitting hole 19 And the head 6 and the fitting hole 19 are fitted together, and the apparatus is installed on the ceiling in the state shown in FIG.

  When removing the device installed on the ceiling, as shown in FIG. 7, the device is pushed up in the direction of the ceiling, the positioning projection 19a of the fitting hole 19 of the fixture 12 provided in the device, and the mounting boss of the fixture 2 4 is released from the fitting with the positioning hole 6a of the head portion 6 and the fitting hole 19 with the head portion 6 and the head portion 6 of the mounting boss 4 is formed in the base plate 14. 21 is fitted.

  Then, as shown in FIG. 8, along the guide groove 23 formed in the base plate 14 of the fixture 12 around the head 6 of the mounting boss 4 in which the device is fitted in the rotation center hole 21, The fixture 12 is rotated in the direction opposite to the locking portion 23a (counterclockwise in FIG. 8), and the open end of the side surface of the base plate 14 is passed through so that the guide groove 23 is formed by the tip of the protruding portion 9 of the telescopic protrusion 7. After releasing the pressing to the bottom surface and releasing the fitting between the head 6 of the mounting boss 4 and the rotation center hole 21, the mounting tool 12 is pushed out in the direction of the connecting portion 15 in that state, and the shaft portion of the mounting boss 4 5 and the engaging part 17 are disengaged, and the device is detached from the fixture 2 fixed to the ceiling surface.

  In the present embodiment, the head 6 of the mounting boss 4 is fitted into the rotation center hole 21 and the tip of the telescopic protrusion 7 is rotated along the guide groove 23 to remove the device from the fixture 2. However, without providing the rotation center hole 21, the tip of the telescopic protrusion 7 may be rotated along the guide groove while the head 6 is pressed against the base plate 14, and the device may be removed from the fixture 2. .

  In the present embodiment, the expansion / contraction protrusion 7 is described as being configured by the spring member 10 urging the protrusion / disengagement portion 9 that is loosely fitted to the body portion 8, but the expansion / contraction protrusion 7 itself is not provided. May be configured to be slidable with respect to the substrate 3 by being urged by the spring member 10, and the tip thereof may be expanded and contracted.

  As described above, in this embodiment, the fixture fixed to the ceiling surface is provided with a mounting boss formed with a large-diameter head at the tip of the shaft portion and an expansion / contraction protrusion whose tip extends and contracts, On the mounting plate of the fixture for mounting the device to the fixture, an engaging portion for engaging the shaft portion of the mounting boss and a guide portion for guiding the engagement of the engaging portion to the shaft portion are provided, and the base thereof By forming a guide groove on the plate to guide the tip of the expansion / contraction projection, the engagement portion is pushed into the shaft portion of the mounting boss along the guide portion with the tip of the expansion / contraction projection pressed against the base plate. Can be easily installed on the ceiling, and the head of the mounting boss can be pressed against the base plate and the tip of the telescopic protrusion can be rotated along the guide groove. The device can be easily removed from the ceiling. Installation and removal to and from a fixed fixture can be easily performed without using tools, improving the efficiency of installation and removal of the device during installation, replacement or maintenance. it can.

DESCRIPTION OF SYMBOLS 1 Ceiling mounting mechanism 2 Fixing tool 3 Board | substrate 3a Fixing hole 4 Mounting boss 5 Shaft part 6 Head part 6a Positioning hole 7 Telescopic protrusion 8 Trunk part 9 Extrusion part 10 Spring member 12 Mounting tool 12a Main body 13 Mounting plate 14 Base board 15 Connection part 17 engaging portion 18 guide portion 19 fitting hole 19a positioning protrusion 21 rotation center hole 23 guide groove 23a locking portion

Claims (5)

In a ceiling hanging mechanism comprising a fixture fixed to a ceiling surface and a fixture for attaching the device to the fixture,
The fixture is
A mounting boss having a shaft fixed to the substrate and a head provided at the tip of the shaft;
The substrate is provided side by side with the mounting boss, and includes a telescopic protrusion whose tip extends and contracts in the vertical direction of the substrate,
The fixture is
A main body in which a mounting plate and a base plate arranged in parallel with the mounting plate are connected in a U-shape;
An engaging portion provided at a central portion of the mounting plate and engaging the shaft portion;
A guide portion for guiding the engagement of the engagement portion with the shaft portion;
A ceiling-hanging mechanism comprising a guide groove provided on the base plate and guiding a tip of the telescopic protrusion when the fixture is rotated. In claim 1,
A fitting hole for fitting the head of the mounting boss is provided inside the mounting plate, and a positioning protrusion is provided on the bottom surface of the fitting hole,
A ceiling mounting mechanism, wherein a positioning hole into which the positioning protrusion is fitted is provided in a head of the mounting boss. In claim 2,
A ceiling hanging mechanism characterized in that the guide groove of the base plate is formed by an arc groove centered on the center of the fitting hole of the mounting plate. In claim 3,
A ceiling hanging mechanism, wherein a locking portion for aligning the positioning hole and the positioning projection is provided at one end of the arc groove. In claim 3 or claim 4,
A ceiling hanging mechanism, wherein a rotation center hole for fitting the head is provided at a position of the base plate facing the fitting hole of the mounting plate.

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