JP2002170168A - Mounting structure of relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a relay capable of easily attaching the relay to a metal fitting. SOLUTION: In the mounting structure of the relay 1 used in fire alarm system, the relay 1 is substantially rectangular parallelopiped and has a locking piece 5 extended downward in its front part 3a and having a hook 5a in a tip part and a projecting part 9 in a rear surface part 3b. The metal fitting 21 has an L-shaped part 23 in which one corner part 3e of the relay 1 comes into contact with an inner corner part of a bent part, a locking hole 25 in which the hook 5a of the locking piece 5 is locked is provided in a horizontal part 23a of the L-shaped part 23, and an insertion hole 29 in which the projecting part 9 is inserted is provided in a vertical part 23b thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a repeater to a mounting bracket used in a fire alarm system.

[0002]

2. Description of the Related Art A fire alarm system is usually mounted on a ceiling or the like to monitor the occurrence of a fire. When a fire occurs, the fire alarm system receives a fire signal from the fire sensor to notify the occurrence of the fire. Equipped with a fire receiver. The fire alarm system is further provided with a repeater, which is
Installed between the receiver and a terminal device such as a fire detector,
It relays the exchange of signals between each other. This type of repeater is mounted and fixed to a mounting bracket with screws, and is mounted and installed in a mounting box embedded and fixed in a wall surface.

[0003]

In the above-mentioned prior art, since the repeater and the mounting bracket are mounted and fixed with screws, the mounting operation is troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a repeater mounting structure that can easily be mounted on a mounting bracket of the repeater.

[0005]

(1) A repeater mounting structure according to the present invention is a repeater mounting structure used for fire alarm equipment, wherein the repeater has a substantially rectangular parallelepiped shape. It has a locking piece that extends downward and has a hook at the tip and a projection on the back, and the mounting bracket is configured such that one corner of the repeater is in contact with the inner corner of the bent portion. A horizontal portion of the L-shaped portion, wherein a locking hole for locking the hook of the locking piece is provided, and an insertion hole for inserting a protrusion is provided in a vertical portion of the L-shaped portion. It is.

(2) In the repeater mounting structure according to the present invention, in the above (1), the protrusion is provided on the bottom surface of the repeater, and the protrusion insertion hole for inserting the protrusion into the L-shaped portion of the mounting bracket is provided. The projection and the projection insertion hole prevent the repeater from coming off the L-shaped portion of the mounting bracket due to external force.

(3) In the mounting structure for a repeater according to the present invention, in the above (1) or (2), the mounting bracket is attached to a flat plate covering an opening of a mounting box in which the repeater is stored. Is formed by fixing the outer corners of the bent portion of the above.

[0008] (4) In the repeater mounting structure according to the present invention, in any one of the above (1) to (3), the mounting bracket is provided by extending a vertical portion of the L-shaped portion downward to a tip portion. Along with the mounting piece, the end of the horizontal portion is extended downward and a mounting piece is provided at the tip, and each mounting piece has a mounting hole for the mounting box in which the repeater is stored and the entire opening of the mounting box. In addition to separately providing mounting holes for the covering plate, a confirmation lamp hole is provided on the horizontal part of the mounting bracket and on the bottom part of the repeater to enable the operation confirmation lamp provided in the repeater to be checked from the outside. is there.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a repeater mounting structure according to an embodiment of the present invention, and FIG. 2 is a schematic view of a repeater according to an embodiment of the present invention. (B) is a right side view, (c) is a rear view, and (d) is a bottom view of (b).
FIG. 3 is a schematic view of a mounting bracket according to an embodiment of the present invention.
(A) is a plan view, (b) is a left side view, and (c) is a front view. First, prior to the description of FIG. 1, the respective structures of the repeater and the mounting bracket will be described with reference to FIGS. In FIG. 2, reference numeral 1 denotes a repeater, which is a substantially L-shaped locking piece that extends downward and has a hook 5a formed at the front end 3a of a repeater body 3 having a substantially rectangular parallelepiped shape. 5
Is fixed, and a printed circuit board 1 to be described later is
Notch 7 for connecting electric wire to terminal block 17 provided in 5
Are formed. Protrusions 9 are provided at both left and right ends of the rear portion 3b of the repeater main body 3, and projections 11 are provided at both ends of the front end of the bottom surface 3c. Protrusion 11
Is provided on its front side (left side in FIG. 2 (b)) with an inclined portion 11a which is inclined downward. In addition, a plurality of body-side confirmation light holes 13 through which a plurality of operation confirmation lights 19, which will be described later, can be externally confirmed are provided on the bottom surface 3c of the repeater body 3 in accordance with the number of operation confirmation lights 19 (2 in FIG.
) Are provided.

A printed circuit board 15 is accommodated in the repeater body 3 formed as described above (see FIG. 5 described later). On the front side of the printed circuit board 15, a terminal block 17 for connecting an electric wire, which is a power / signal line connected to a terminal device (not shown), is provided. A plurality (two in FIG. 2) of operation confirmation lamps 19, such as LEDs, for confirming the operation of the repeater 1 at the time are provided.

In FIG. 3, reference numeral 21 denotes a mounting bracket to which the repeater is attached, and a horizontal portion 23a which contacts the bottom surface 3c of the repeater main body 3 and a vertical portion 2 which contacts the back surface 3b of the repeater.
3b. The horizontal portion 23a is provided with a locking hole 25 for locking the hook 5a of the locking piece 5 when inserted, and a projection insertion hole 27 for inserting the projection 11, and the vertical portion 23b is provided with a repeater. An insertion hole 29 into which the one protrusion 9 is inserted is provided.

Here, returning to FIG. 1, the mounting bracket 2 of the repeater will be described.
The method of mounting the device 1 will be described. First, as shown in (a), the protrusion 9 is inserted into the insertion hole 29 while keeping the repeater main body 3 of the repeater 1 oblique to the mounting bracket 21. Subsequently, as shown in (b), the locking piece 5 is bent toward the repeater main body 3, and in this state, the repeater 1 is rotated in the direction of the mounting bracket 21 with the protrusion 9 inserted into the insertion hole 29 as a fulcrum. . Then, as shown in (c), the corner 3e of the repeater main body 3 is brought into contact with the inner corner of the bent portion of the mounting bracket 21, and the rear portion 3b and the bottom surface 3c of the repeater main body 3 are respectively mounted on the mounting bracket 21.
To the vertical portion 23b and the horizontal portion 23a. As a result, the protrusion 11 of the bottom surface 3c of the repeater main body 3 is inserted into the protrusion insertion hole 27 of the mounting bracket 21, and the hook 5a of the locking piece 5 is inserted through the locking hole 25. By releasing the bending of the stopper 5, the stopper 5 is moved to the stopper hole 2.
5 locked. Thereby, the repeater 1 is attached to the mounting bracket 21.
Fixed to

When the repeater is removed from the mounting bracket 21, the locking piece 5 is bent toward the repeater body 3 and the hook 5
a and the locking hole 25 is released, and in this state, the repeater main body 3 is supported with the protrusion 9 inserted into the insertion hole 29 as a fulcrum.
Is rotated in the direction opposite to the direction at the time of mounting. Thereby, the repeater 1 can be removed from the mounting bracket 21.

In this manner, with the locking piece 5 of the repeater body 3 bent toward the repeater body 3, the protrusion 9 of the repeater body 3 inserted into the insertion hole 29 of the mounting bracket 21 is used as a fulcrum. Rotate the repeater body 3 in the locking direction (toward the mounting bracket 21),
Since the repeater 1 is attached to the mounting bracket 21 by locking the locking piece 5 in the locking hole 25, the repeater 1 can be attached to and detached from the mounting bracket 21 with one touch.

Further, since the corner 3e of the repeater body 3 is brought into contact with the inner corner of the bent portion of the L-shaped portion 23 of the mounting bracket 21, the repeater 1 and the mounting bracket 21 are closely connected. According to this mounting structure, the hook 5 a of the locking piece 5 protrudes from the mounting bracket 21.
(In the present embodiment, the protrusion 9 and the protrusion 11 also protrude from the mounting bracket 21, but these do not have to be protruded.) 1 has the advantages of saving space and increasing the degree of freedom in mounting.

Now that the respective structures of the repeater and the mounting bracket 21 and the method of mounting each other have been clarified from the above description, the following description is based on the case where the repeater 1 is actually mounted in a mounting box embedded in a wall surface. A specific example will be described.

FIGS. 4A and 4B are schematic views showing a specific example of the mounting bracket actually mounted on the mounting box. FIG. 4A is a left side view of FIG. 4B, FIG. 4B is a plan view, and FIG. (b) is a right side view, and (d) is a front view. 5A and 5B are explanatory views of a mounting structure of a repeater to a mounting box, and FIG.
(B) is a sectional view of (a). The structure of the repeater is the same as that of FIG.

Here, prior to the description of the mounting bracket in FIG. 4, the configuration of the installation location of the repeater will be described with reference to FIG. Reference numeral 31 denotes a mounting box having an opening on one side, and L-shaped members 3 are provided on the opening sides of the side walls facing each other.
5, the mounting box 31 is pushed into the opening of the wall surface W together with the horizontal portion 35a of the L-shaped member 35, and the vertical portion 35b of the L-shaped member 35 is in contact with the wall surface W. And is buried in the wall W. In addition, mounting box 3
Inside 1, an electric wire 33 extends from an insertion hole provided in the bottom surface.

The mounting bracket 41 will be described with reference to FIG. The mounting bracket 41 has an L-shaped portion 23 similar to that of FIG. 2, that is, an L-shaped portion 23 in which a locking hole 25, a projection insertion hole 27, and an insertion hole 29 are formed. The mounting portion 41a is provided at the front end of the horizontal portion 23a, and the mounting portion 41b is provided at the front end of the horizontal portion 23a extending leftward (downward in FIG. 2). A mounting box mounting screw hole 43 is provided on the outer side of the mounting pieces 41a and 41b, and a plate mounting screw hole 45 is provided on the inner side of the mounting pieces 41a and 41b. Also, L
The horizontal portion 23a of the character portion 23 has a bottom 3
A fitting-side confirmation light hole 46 is provided opposite to the body-side confirmation light hole 13 provided in c.

Here, the description returns to FIG. 47 is a plate for preventing intrusion of dust and water droplets into the mounting box 31; a flat portion 47a covering the entire opening of the mounting box 31; and a curved portion 47b wrapping around the wall W from the periphery of the flat portion 47a. It is composed of Flat part 47a
The recess 5 in which the head of the plate mounting screw 49 is locked
1 is formed.

Next, referring to FIG. 5, a mounting method when the repeater is installed at the installation location will be described. First, the repeater 1 is mounted on the mounting bracket 41. This mounting method is the same as the case of mounting on the L-shaped part 23 of the mounting bracket 21 described above, and the relay main body 3 of the repeater 1 is L-shaped on the mounting bracket 41. Part 2
3, the projection 9 is inserted into the insertion hole 29, and then the locking piece 5 is bent toward the repeater main body 3. In this state, the projection 9 inserted into the insertion hole 29 is removed. The repeater 1 is rotated in the direction of the mounting bracket 41 as a fulcrum. Then, one corner 3 e of the repeater main body 3 is brought into contact with the inner corner of the bent portion of the mounting bracket 41, and the back part 3 b and the bottom part 3 c of the repeater main body 3
To the vertical portion 23b and the horizontal portion 23 of the mounting bracket 41, respectively.
a. As a result, the projection 11 of the bottom surface portion 3c is inserted into the projection insertion hole 27 of the mounting bracket 41, and the hook 5a of the locking piece 5 is inserted through the locking hole 25.
Here, by releasing the bending of the locking piece 5, the locking piece 5 is locked in the locking hole 25. Thereby, the repeater 1 is fixed to the mounting bracket 41. In this locked state,
As shown in FIG. 5A, the projection 11 has a state in which the base end side of the inclined portion 11a is in contact with the lower surface of the inner peripheral portion of the projection insertion hole 27.

Next, the electric wire 3 extending into the mounting box 31
3 is connected to the terminal block 17 of the repeater 1, the outer sides of the mounting pieces 41a and 41b of the mounting bracket 41 are brought into contact with the upper surface of the L-shaped member 35, and the shaft of the mounting box mounting screw 53 is mounted from the left. While the part is screwed into the mounting box mounting screw hole 43 of the mounting bracket 41, the mounting bracket 41 and the mounting box 31 are fixed to the wall surface W by passing through the shaft hole provided in the vertical portion 35 b of the L-shaped member 35. Here, in order to prevent dust from accumulating on the terminal block 17 of the repeater 1, the repeater 1 is attached to the mounting box 31 such that the terminal block 17 is located downward (the cutout 7 shown in FIG. 2 is located downward). . Then, the entire opening of the mounting box 31 is covered with the plate 47, and the distal end of the plate mounting screw 49 is inserted into the shaft hole of the concave portion 51 with the distal end surface of the curved portion 47b of the plate 47 abutting against the wall surface W. , Head is concave 5
The plate mounting screw 49 is screwed into the plate mounting screw hole 45 of the mounting bracket 41 until it is locked at 1.
Thereby, the plate 47 is fixedly mounted on the mounting bracket 41, and the mounting of the repeater 1 is completed.

As described above, according to the present embodiment, the protrusion 9 of the repeater body 3 inserted into the insertion hole 29 of the mounting bracket 41
By rotating the repeater main body 3 in the locking direction (the direction of the mounting bracket 41) with the fulcrum as a fulcrum, the hook 5 a of the locking piece 5 bent toward the repeater main body 3 is locked in the locking hole 25, thereby 1 is attached to the mounting bracket 41, so that the repeater 1 can be attached to and detached from the mounting bracket 41 with one touch, and the attachment / detachment work is extremely easy as compared with the conventional method in which both are fixed with screws. Becomes

Further, since one corner 3e of the repeater body 3 is brought into contact with the inner corner of the bent portion of the L-shaped portion 23 of the mounting bracket 41, the repeater 1 and the mounting bracket 41 are tightly integrated. With this structure, only the hook 5a of one locking piece 5 protrudes from the mounting bracket 41. (In the present embodiment, the projection 9 and the projection 11 also protrude from the mounting bracket 41. It does not necessarily have to be projected). This saves space when mounting the repeater 1 in the mounting box 31 or the like.
Since the degree of freedom in mounting is increased, the space in the mounting box 31 or the like can be effectively used. The following figure shows a specific example of the effective use of the space.

FIG. 6 is a view showing a mounting example in which the space in the mounting box is effectively utilized. In this case, as shown in FIG. 6, an outer corner portion of the bent portion of the L-shaped portion 23 of the mounting bracket 21 shown in FIG. 2 is fixed to a flat plate-like mounting plate 55a to form the mounting bracket 55. The L-shaped portion 23 of the repeater 1 and the mounting bracket 55 is attached to the mounting box 31 by using the mounting bracket 55.
It is designed to be mounted obliquely with respect to. Thereby, for example, when the repeater 1 is mounted on the mounting box 31 smaller than the entire length of the repeater 1 (the one that is larger than the total length of the repeater 1 is shown in FIG. 6), spatial efficiency is improved. The repeater 1 can be stored well, and the space in the mounting box 31 can be effectively utilized.

Further, since the plate 47 is mounted with the distal end surface of the curved portion 47b of the plate 47 in contact with the wall surface W, it is possible to reliably prevent dust and water droplets from entering the mounting box 31. it can.

The protrusion 1 is provided on the bottom 3c of the repeater body 3.
1, and the base end side of the inclined portion 11a is
Abuts on the lower surface of the inner peripheral portion of
When the repeater 1 is pulled in the front direction (the direction of the arrow in FIG. 5) by the electric wire 33 or the like, the hook 5 a bends and acts as a stopper for preventing the protrusion 9 from coming off the mounting bracket 41, and Fixing with the mounting bracket 41 becomes more reliable.

By the way, conventionally, when checking the operation of the repeater, in order to check the operation check lamp provided in the repeater, first, the plate fixed to the front of the mounting box is removed, and then the repeater is further removed. In this embodiment, the mounting box 41 and the plate mounting screw hole 43 and the plate mounting screw hole 45 are provided in the mounting bracket 41 (55). It is provided separately so that the plate 47 can be removed while the repeater 1 is attached to the mounting box 31. Further, the main body side confirmation light hole 13 and the fitting side confirmation are provided in the repeater body 3 and the mounting bracket 41 (55), respectively. Since the light holes 46 are provided, the plate 47 is simply removed, and the main body-side confirmation light hole 13 and the metal fitting-side confirmation light hole 46 are used during construction and maintenance work.
The operation confirmation lamp 19 of the repeater 1 can be inspected to check the operation.

[0029]

As described above, according to the present invention,
The following effects can be obtained. (1) In the state where the locking piece of the repeater body is bent toward the repeater body, the locking direction (toward the repeater body) or the engagement direction is set with the protrusion of the repeater body inserted into the insertion hole of the mounting bracket as a fulcrum. The repeater and the mounting bracket are attached and detached by rotating in the stop release direction (direction away from the repeater main body) to lock the hook of the locking piece and the locking hole, or by releasing the lock. So
The repeater can be attached to and detached from the mounting bracket with a single touch, and the attaching and detaching work can be made extremely easy.
Furthermore, since one corner of the repeater main body is brought into contact with the inner corner of the bent portion of the L-shaped portion of the mounting bracket, the relay and the mounting bracket can be tightly integrated with each other. ,
According to this mounting structure, only the hooks of the locking pieces protrude from the mounting bracket, so that when mounting the repeater in the mounting box, space can be saved and mounting flexibility is increased.

(2) The L-shaped portion of the mounting bracket is provided with a projection insertion hole into which the projection provided on the bottom of the repeater is inserted, so that the projection and the projection insertion hole prevent bending of the locking piece due to external force. As a result, the repeater can be prevented from coming off the L-shaped portion of the mounting bracket, so that the repeater and the mounting bracket can be more securely fixed.

(3) The mounting bracket has a configuration in which the outer corner of the bent portion of the L-shaped portion is fixed to a flat plate covering the opening of the mounting box in which the repeater is stored. Considering that the part is attached obliquely to the mounting box, that is, the repeater is attached to this L-shaped part,
Since the repeater is mounted diagonally to the mounting box, the repeater can be stored efficiently in space when the repeater is mounted in a mounting box smaller than the total length of the repeater, and the space inside the mounting box can be reduced. Can be used effectively.

(4) The mounting bracket is separately provided with a mounting hole for the mounting box and a mounting hole for the plate so that the plate can be removed while the repeater is mounted on the mounting box. Just remove the
The operation can be checked by checking the operation check lamp of the repeater through the check lamp hole.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a mounting structure of a repeater according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a repeater according to an embodiment of the present invention;
(A) is a front view, (b) is a right side view, (c) is a rear view,
(D) is a bottom view of (b).

FIG. 3 is a schematic view of a mounting bracket according to an embodiment of the present invention;
(A) is a plan view, (b) is a left side view, and (c) is a front view.

FIG. 4 is a schematic view showing a specific example of a mounting bracket having an L-shaped part of the mounting bracket of FIG. 1 and actually mounted on a mounting box 31, (a) is a left side view of (b), (B) is a plan view,
(C) is a right side view of (b), and (d) is a front view.

5A and 5B are explanatory views of a mounting structure of the repeater to a mounting box by the mounting bracket of FIG. 4, wherein FIG. 5A is a front view and FIG. 5B is a cross-sectional view of FIG.

FIG. 6 is a diagram illustrating an example of mounting a repeater by effectively utilizing a space in a mounting box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Repeater 3 Repeater main body 3a Front part 3b Back part 3c Bottom part 5 Locking piece 5a Hook 9 Projection 11 Projection 13 Body side confirmation light hole 19 Operation confirmation light 21, 41, 55 Mounting bracket 23 L-shaped part 23a Horizontal part 23b Vertical part 25 Locking hole 27 Projection insertion hole 29 Insertion hole 31 Mounting box 41a, 41b Mounting piece 43 Mounting box mounting screw hole 45 Plate mounting screw hole 46 Hardware side confirmation light hole 55a Mounting plate (flat plate) )

Claims (4)

[Claims] 1. A mounting structure for a repeater used in a fire alarm system, wherein the repeater has a substantially rectangular parallelepiped shape, and has a locking piece extending downward at a front portion thereof and having a hook at a tip portion. The mounting bracket has an L-shaped part in which one corner of the repeater is in contact with the inner corner of the bent part, and the mounting part has a horizontal part, In addition to providing a locking hole where the hook of the locking piece is locked,
A mounting structure for a repeater, wherein an insertion hole into which the protrusion is inserted is provided in a vertical portion of the L-shaped portion. 2. A projection is provided on a bottom portion of the repeater, and a projection insertion hole for inserting the projection is provided on an L-shaped portion of the mounting bracket. The relay and the projection insertion hole are connected to each other by an external force. 2. The mounting structure for a repeater according to claim 1, wherein the container is prevented from coming off the L-shaped portion of the mounting bracket. 3. An outer corner of the bent portion of the L-shaped portion is fixed to a flat plate that covers an opening of a mounting box in which the repeater is housed. The mounting structure of the repeater according to claim 1 or claim 2. 4. The mounting bracket has a vertical portion of the L-shaped portion extending downward and a mounting piece provided at a distal end thereof, and an end of the horizontal portion extending downward and a mounting piece extending at a distal end thereof. In each of the mounting pieces, separately provided a mounting hole of a mounting box in which the repeater is stored and a mounting hole of a plate that covers the entire opening of the mounting box, and a horizontal portion of the mounting bracket and The confirmation light hole which can confirm the operation confirmation light provided in the repeater from the outside was provided in the bottom part of the repeater, respectively, The Claims 1 thru | or 3 characterized by the above-mentioned.
A mounting structure for a repeater according to any one of the above.