JPH0713255Y2 - Ceiling mount fixture - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a ceiling-mounting device that is used by being mounted on a ceiling.

[Prior art]

Conventionally, various types of equipment such as wireless receivers, human body detectors, fire detectors, smoke detectors, etc. have been provided as this kind of ceiling-mounted equipment. As shown in FIG. 5, these ceiling mounting fixtures are formed by connecting a body 1 fixed to a ceiling material 9 and a cover plate 4 covering a lower surface of the body 1. As shown in FIG. 6, the body 1 and the cover plate 4 are joined by engaging a locking claw 12 formed on the cover plate 4 with a step portion 11 formed on the peripheral portion of the body 1. It That is, by fixing the body 1 to the ceiling material 9 and pushing up the cover plate 4 from below, the locking claw 12
Is engaged with the stepped portion 11. Further, the cover plate 4 is provided mainly for the purpose of covering the lower surface side of the body 1 to prevent the screws and the like attaching the body 1 to the ceiling material from being exposed, and is attached to and detached from the body 1 as necessary. . Then, when the cover plate 4 is removed from the body 1, a jig such as a driver is applied to the operation piece 14 exposed from the removal groove 13 formed in the cover plate 4 so as to twist it up and down.

[Problems to be solved by the device]

In the above conventional configuration, the cover plate 4 is attached to the body 1.
Since a force is exerted upward on the ceiling material 9 when mounting, the cover plate for the body 1 in a so-called system ceiling where the ceiling material 9 is placed on the hanging metal fitting 10. There was a problem that the ceiling material 9 floated up when the No. 4 was attached and the cover plate 4 was difficult to attach. The present invention is intended to solve the above problems, and when attaching the cover plate to the body, prevent the upward force from acting on the ceiling material and remove the cover plate from the body. Another object of the present invention is to provide a ceiling mounting device in which the cover plate is easily attached and detached by preventing an excessive force from acting on the ceiling material.

[Means for Solving the Problems]

In the present invention, in order to achieve the above object, a peripheral wall facing a peripheral surface of a body protruding from a ceiling surface is formed on a cover plate, and either the peripheral surface of the body or the inner peripheral surface of the peripheral wall of the cover plate is formed. One side is formed with a locking claw that projects in a direction substantially parallel to the ceiling surface, and the other side is formed with a locking edge that runs in the circumferential direction so as to engage with the locking claw, and is locked at a key point of the locking edge. The claw forms a cutout portion through which the claw can pass in the vertical direction.

[Action]

According to the above configuration, the engaging claw provided on the other side is inserted through the notch provided on the one side of the body and the cover plate, and then the cover plate is rotated in the circumferential direction so that the engaging claw and the engaging edge are formed. Since the cover plate is coupled to the body by engaging, the upward force does not act on the ceiling material, and the ceiling material does not rise, so that the cover plate can be easily attached. is there. Further, when removing the cover plate from the body, the work may be performed in the reverse order, and even when the cover plate is removed, an unreasonable force does not act on the ceiling material from the cover plate through the body. As a result, a load is hardly applied to the ceiling material when the cover plate attached to the lower surface of the body is attached or detached, and the ceiling material is not damaged.

【Example】

As shown in FIG. 1, the body 1 is formed in a substantially disc shape, and the upper surface of the outer peripheral portion becomes an inclined surface that is inclined downward toward the outside as shown in FIG. 2 and runs in the circumferential direction. The locking edge 2 is formed. Further, a notch 3 is formed at a peripheral portion of the body 1 continuously with the locking edge 2. On the other hand, the cover plate 4 is mounted so as to cover the lower surface of the body 1, and has a peripheral wall 5 facing the outer peripheral surface of the body 1 on the outer peripheral portion, and the peripheral wall 5 has a locking edge. A locking claw 6 that can engage with 2 is provided in a protruding manner. The locking claw 6 is formed so that it can pass vertically above the cutout 3. Cutout 3
Since the locking claws 6 need to be provided at a plurality of locations in the circumferential direction of the body 1 and the cover plate 4, the locking claws 6 are provided at two locations in the diametrical direction as the minimum configuration. As shown in FIG. 5, the body 1 holds the ceiling material 9 between the sandwiching metal fitting 8 attached to the metal fitting mounting hole 7 of the body 1 and the peripheral portion of the body 1, so that the ceiling material 9 is Fixed to. With respect to the body 1 fixed to the ceiling member 9 in this manner, the cover plate 4 is so arranged that the locking claws 6 pass through the notches 3.
Is fitted into the body 1 from below, and then the cover plate 4 is rotated, so that the cover plate 4 is joined to the body 1. Here, the cover plate 4 is about 90
The locking edge 2 is formed so that it can be rotated. As described above, since the cover plate 4 is coupled to the body 1 by rotating, the upward force does not act on the ceiling material 9, and the ceiling material 9 does not float up. 4 can be easily mounted. On the other hand, when removing the cover plate 4 from the body 1, the cover plate 4 is rotated reversely with respect to the body 1 so that the locking claw 6 and the notch 3 are aligned with each other, and then the cover plate 4 is moved downward with respect to the body 1. The cover plate 4 can be removed without applying a load to the ceiling material 9 at this time as well. In short, the body 1 and the cover plate 4 are attached and detached as needed, but since the load hardly acts on the ceiling material 9 when attaching and detaching, the damage to the ceiling material 9 can be prevented. . In the above-described embodiment, the engaging edge 2 is formed on the body 1 and the engaging claw 6 is provided on the cover plate 4, but the engaging claw is provided on the body 1 and the engaging edge is provided on the cover plate 4. Even if 2 is formed, the same effect can be obtained. The ceiling mounting device formed as described above is, for example,
It can be used as a wireless receiver in a remote monitoring and control system. As shown in FIG. 3, this type of remote monitoring control system includes a central control device 21, a plurality of monitoring terminals 22, control terminals 23, wireless relay terminals 24, and external terminals each having an address set therein. The interface terminal device 25 and the pattern setting terminal device 26 are connected via a pair of signal lines 1. The monitoring terminal device 22 has switches S _{1 to} S ₄ such as wall switches as a monitoring input and fire detection. Various sensors (not shown) such as a gas detector, smoke detector, and gas leak detector are connected. The transmission signal Vs sent from the central control unit 21 to the signal line 27 is, as shown in FIG. 4 (a), a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode,
Address data signal AD for transmitting 8-bit address data for calling each terminal 22 to 26, control data signal CD for transmitting control data for controlling loads L _{1 to} L ₄ , checksum data signal CS and each terminal 22 Is a multi-pole (± 24V) time division multiplexed signal having a signal return period WT for setting a return period from ~ 26, and data is transmitted by pulse width modulation. In each of the terminals 22 to 26, the signal line l
When the address data of the transmission signal Vs received via the and the set address data match, the transmission signal Vs
Of the control signal of the transmission signal Vs and returns the monitoring data signal as a current mode signal (a signal that is short-circuited between the signal lines 1 via an appropriate low impedance) in synchronization with the signal return period WT of the transmission signal Vs. It is like this.
Further, the central control device 21 includes a dummy signal transmitting means for constantly transmitting a dummy transmission signal in which the mode data signal MD is a dummy mode, a monitoring terminal device 22, a wireless relay terminal device.
When an interrupt signal Vi as shown in FIG. 4 (b) returned from any one of 24, the external interface terminal device 25, and the pattern setting terminal device 26 is received, the terminal devices 22 to 26 that have generated the interrupt are An interrupt processing means for detecting and accessing the terminals 22 to 26 to return the monitoring data is provided. In the central controller 21, the monitoring terminal 22 or the wireless relay terminal 24, as described above,
External interface terminal 25, pattern setting terminal 26
The control data to be transmitted to the control terminal 23 for controlling the corresponding loads L _{1 to} L ₄ is created based on the monitoring data returned from the central control device 21 from the central control device 21, and the control data is transmitted via the signal line l. The load L _{1 to} L ₄ is controlled by time division multiplexing transmission to the control terminal 23. The wireless relay terminal device 24 is a terminal device that relays data of a wireless system including a wireless transmitter Y, a wireless receiver X, and a wireless system signal line lw. The wireless relay terminal device 24 receives an optical signal transmitted from the wireless transmitter Y by a wireless receiver. The data is received at X, the received data is received via the wireless system signal line lw, and this data is transferred to the central controller 21. The above-described ceiling mount fixture is used as such a wireless receiver X. The external interface terminal device 25 is a terminal device that performs data transmission with the external control device 27,
The pattern setting terminal device 26 is a terminal device that transfers the pattern control data input from the data input unit 28 to the central control device 21. Incidentally, the monitoring terminal 23 and the control terminal 23 arranged in the distribution board 31 or the relay control board 32 are set to the distribution board agreement size, and the load control remote controller is set by the control output. A relay (a latching relay that can be turned on and off by a hand switch) 33 is controlled.

[Effect of device]

As described above, according to the present invention, the cover plate is formed with the peripheral wall facing the outer peripheral surface of the body protruding from the ceiling surface, and the ceiling surface is provided on either the outer peripheral surface of the body or the inner peripheral surface of the cover plate. A locking claw protruding in a substantially parallel direction is formed, and a locking edge that runs in the circumferential direction so as to engage with the locking claw is formed on the other side. It forms a cutout that can pass through, and if the locking claw provided on the other side is inserted through the cutout provided on one of the body and the cover plate, then the cover plate is rotated in the circumferential direction. Since the pawl and the locking edge are engaged with each other and the cover plate is coupled to the body, no upward force is applied to the ceiling material and the ceiling material does not float up. It has an advantage that the plate can be easily attached. Further, when removing the cover plate from the body, the reverse procedure may be performed, and even when the cover plate is removed, an unreasonable force does not act on the ceiling material from the cover plate through the body. As a result, there is an advantage that a load is hardly applied to the ceiling material when the cover plate attached to the lower surface side of the body is attached or detached, and the ceiling material is not damaged.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view of an essential part of the same, FIG. 3 is a schematic configuration diagram of a remote monitoring control system using the same as a wireless receiver, and FIG. Is an operation explanatory view of the remote monitoring and control system shown in FIG. 3, FIG. 5 is a sectional view showing a mounting state of a ceiling mounting apparatus according to the present invention, and FIG. 6 is an exploded perspective view showing a conventional example. 1 ... Body, 2 ... Locking edge, 3 ... Notch, 4 ... Cover plate, 6 ... Locking claw.

Claims (1)

[Scope of utility model registration request] 1. A ceiling mounting apparatus comprising a body fixed to a ceiling material, and a cover plate which is engaged with the body and is detachably covered on the lower surface side of the body, wherein the cover plate is from the ceiling surface. It has a peripheral wall facing the outer peripheral surface of the protruding body, and a locking claw protruding in a direction substantially parallel to the ceiling surface is formed on one of the outer peripheral surface of the body and the inner peripheral surface of the peripheral wall of the cover plate. On the other hand, a locking edge running in the circumferential direction so as to engage with the locking claw is formed, and a notch through which the locking claw can pass in the vertical direction is formed at a key part of the locking edge. Ceiling mount equipment.