JP3089505B2 - Fire detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeder for relaying an electric wire other than for a fire detector, if necessary, by using a relay connector of another part inside the fire detector. It relates to a possible fire detector.

[0002]

2. Description of the Related Art Fire detectors are usually attached to the ceilings of important points in buildings such as buildings, and these fire detectors are installed in a fire prevention control room installed in a section of the building. Connected to the machine via electrical lines. Then, when the fire detector detects a fire, the fire detector issues an alarm, and sends an alarm signal to the fire receiver via an electric line connected to a connection terminal for the fire detector provided in the fire detector. .

[0003] By the way, fire receivers and their respective fire feelings
The wiring connection with the detector is, for example, as shown in FIG. 4 or FIG.
It is done like this. That is, as shown in FIG.
Two-core signal cable connected to a pair of sensing line connection terminals of
Table L^Two ₁The fire detector B ¹The fire detector B equipped with
¹Terminal B for¹ _aTo the connection terminal B¹ _aTo
Connected signal cable L^Two ₁To the next fire detector B^TwoTo
Fire detector B for sending and wiring¹Feed wiring connection terminal
B¹ _b2 core signal cable L^Two _TwoConnect one of the
No. cable L^Two _TwoThe other is fire detector B^TwoConnection for
Terminal B^Two _aConnect to Further, connection terminal B^Two _aConnected to
Signal cable L^Two _TwoTo the next fire detector B^ThreeDelivery to
Fire detector B to wire^TwoFeed wiring connection terminal B^Two _b
2 core signal cable L^Two _ThreeConnect one of the two. This
In this way, the two-core signal cable L^Two _1,L^Two _2,... L^Two
_nFire detector B while connectingⁿAnd send it to
Fire detector BⁿFeed wiring connection terminal Bⁿ _b2 core signal
Cable L^Two _1,L^Two _2,... L ^Two _nCheck if there is a disconnection
Connect the terminating resistor R used when checking.

By the way, as shown in FIG.
When is the feed connection to the final fire detector B ⁿ of wires, signal 2 core from the fire receiver A cable L ² _1, L 2 _^2,
If ... L ² the presence or absence of disconnection of _n check without conduction of the terminating resistor R, the signal of the two-core cable L ² _1, L 2 _^2, ... disconnection somewhere L ² _n seems that there is first Check whether the terminating resistor R is actually connected. However, in this case, if the fire detector ^Bn is attached to the ceiling surface, the scaffold will be prepared.
You have to be prepared and confirm it. Therefore, perform wiring connection as shown in FIG. 5 instead of the wiring connection as shown in FIG. 4, the terminating resistors nearby floor transmitter D, etc.
Installation of R is performed.

Namely, as shown in FIG. 5, the two-core signal cable L ² _{1 of,} L 2 _^2, ... L ² _n 4-core signal instead of the cable L ⁴ _1, L ⁴ _2, a ... L ⁴ _n In the same manner as described above, two wires in the four-core signal cable are used for feed wiring, and the remaining two wires in the four-core signal cable L ⁴ _n are connected to the feed wire connection terminal B ⁿ _b of the final fire detector B ⁿ connect the core, then sequentially, 4 signal cable L ⁴ _n-1 of the _core, ... L ⁴ _2, L ⁴ ₁ of the remaining two-core with crimp intermediate connection terminals C connected, 4-core signal cable L ⁴ ₁ of the remaining 2 core tip, whether the check easily as in near the floor outgoing connection of the terminating resistor R is made
It is connected to a terminating resistor R provided on a transceiver D or the like.

FIG. 6 is a perspective view showing a state in which the wiring connection as shown in FIG. 5 is made by using a four-core signal cable for a sensor base of a conventional fire detector. For example, it is assumed the sensor base 10 shown in FIG. 6 of the fire detector B ² in FIG. Then, one of the signal cable is equivalent to 4 signal cable L ⁴ ₂ core of FIG. 5 in FIG. 6, 4-core signal cable L of the other signal cable 5
Equivalent to ⁴ ₃ . Therefore, one of the 4 symbols of the core of the signal cable of Figure 6 and L ⁴ _2, illustrating the sign of the signal cable of the other four-wire 6 as L ⁴ _3. In many cases, the fire detector includes a sensor base 10 attached to the ceiling as shown in FIG. 6 and a sensor head (not shown) attached below the sensor base 10. .

As shown in FIG. 6, the sensor base 10 is made of a thick disk-shaped resin, and the sensor base 10 is attached to a ceiling (not shown) for attachment (not shown). ) And a sensor unit (not shown) for attaching the sensor head (not shown) downward are provided near the periphery of the sensor base 10. Further, the sensor base 10 has a cable hole 11 at the center of the sensor base 10 for drawing out a signal cable laid on the ceiling, and is electrically connected to the sensor head when the sensor head is engaged. A pair of connection terminals 12 (B ² shown in FIG. 5) which are connection terminals for the fire detector to be connected.
considerable to have) to those in integrating the _a and B ² _b are provided on a lower surface of the vicinity of the periphery of the cable hole 11.

The above-mentioned feed wiring of the sensor base 10 shown in FIG. 6 is performed as follows. That is, 4 two-core in the core of the signal cable L ⁴ ₂ are respectively connected to connection terminals 12 of the pair, the two-core in the signal cable L ⁴ ₃ 4 core connected to the connection terminals 12 of the pair Has been sent wiring. Also, 4 core signal cable L ⁴ ₂ remaining 2 core and 4-core signal cable L ⁴ ₃ remaining two cores in the inside of, and is crimped respectively with a crimp intermediate connection terminals C.

[0009]

However, in the conventional fire detector, like the remaining two cores in the above-described four-core signal cable, wires for other purposes other than for the fire detector are used. If necessary, use crimping connection using a crimping intermediate connection terminal, which is a separate component, and relay the wiring inside the fire detector. The sensor head may be in a position where it becomes an obstacle to being worn, and the mounting of the sensor head or the contact failure is likely to occur.

[0010] In addition, the purpose of feeding and connecting a core wire other than for the fire detector using a crimping tool with a crimping intermediate connection terminal is to connect to a connection terminal provided on a sensor base. Difficult to connect. Therefore, it is conceivable to add a connection terminal to the sensor base for relaying and sending the core wire for another purpose to the sensor base. However, the connection terminal for relaying the core wire for another purpose is connected as shown in FIG. In some cases, connection terminals for sending and wiring are unnecessary, which causes unnecessary cost increase.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object not to cause unnecessary cost increase and to attach a sensor head. It is an object of the present invention to provide a fire detector which can surely be located at a position where a portion connected and relayed by relaying a core wire for another purpose does not interfere.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a connection terminal to which an electric wire for a fire detector is connected and an electric wire connected to the connection terminal. And a feed wiring connection terminal for the fire detector, and can also feed and wire the electric wires other than the fire detector by using a relay connector of another part as necessary. And a locking portion for the relay connector is provided.

[0013]

According to the above-mentioned construction, if necessary, another purpose electric wire is relayed and sent by using a separately connected relay connector separately procured, and then the separate connector relay connector is fired. The locking portion for the relay connector provided in the sensor can be locked so as not to interfere.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a fire detector according to the present invention will be described below with reference to FIGS. FIG. 1 is a bottom view showing a state where two 4-core signal cables are drawn in and sent to the detector base of the fire detector, and FIG. 2 shows a state where the signal cable core is connected to a relay connector which is a separate component. FIG. 3 is a perspective view, and FIG. 3 is a side view showing a state where a relay connector, which is a separate component, is locked to a locking portion for the relay connector.

As shown in FIG. 1, a sensor head (not shown)
Is a fire detector that becomes a fire detector when it is attached.
The case 20 is made of a thick, substantially disk-shaped resin and has a ceiling (not shown).
(Not shown) and a sensor (not shown) for attaching to
An engaging portion (see FIG. 1) for attaching a head (not shown) downward.
Not shown) and signal cable F laid under the ceiling_1,F _Two
Cable hole 21 for pulling out the sensor head (Fig.
(Not shown) is electrically connected to the sensor head when engaged.
Signal cable F for the following fire detector_1,F_TwoNoso
A connection terminal 22 to which each of the two cores is connected and a separate component
Locking portion 23 for the relay connector G.

The cable hole 21 is substantially in the middle of the sensor base 20.
The signal cable F_1,F_TwoPull
It is big enough to start. Connection terminal 22 is a cable
A substantially provided on the lower surface of the sensor base 20 at the periphery of the hole 21
It is a rectangular parallelepiped and has a connection terminal 22 with a cable hole 21 side.
On the side, signal cable F_1,F_TwoInsert the core wire inside
Core wire with quick-connect terminal mechanism that can be electrically connected only by
Four insertion holes (not shown) are provided. The four core insertions
The signal cable F is inserted into the two core wire insertion holes in the holes.₁Core
Line F_11,F₁₂Is inserted into the remaining two core wire insertion holes.
Signal cable F _TwoCore wire F_{twenty one,}F_{twenty two}Is inserted. What
Contact, core wire F_11,F₁₂Is sent from a fire receiver (not shown)
Equivalent to the wireway for the fire detector that has been wired
And core wire F_{twenty one ,}F_{twenty two}Is the core wire F_11,F₁₂Send and wire
It is equivalent to an electric wire path. That is, the core wire F_11,F₁₂But
The inserted core wire insertion hole is an electric wire path for the fire detector
Corresponds to the connection terminal to be connected, and the core wire F_{twenty one,}F_{twenty two}Is inserted
The core wire insertion hole is connected to the connection terminal (core wire F_11,F₁₂Is inserted
Feed and connect the wire path connected to the core insertion hole
It is equivalent to the feed wiring connection terminal for. That is,
The connection terminal 22 is connected to the electric line for the fire detector.
The connection terminal and the wire path connected to the connection terminal
With the feed wiring connection terminal for
I have. In the connection terminal 22, the core wire F₁₁And core wire F
_{twenty one}And core wire F₁₂And core wire F_{twenty two}Are electrically connected to each other.
The sensor base 20 has a sensor
When the head is engaged, it comes into contact with the sensor head and
It has a pair of contact portions 24, 24 to be connected. In addition,
One of the contact portions 24, 24 is a core wire F₁₁And the other is a core wire F₁₂
Are electrically connected to each other.

The locking portion 23 is provided near the periphery of the cable hole 21 on the lower surface of the sensor base 20 facing the connection terminal 22, and presses and inserts a rectangular box-shaped relay connector G described later as shown in FIG. Sensor base 20 so that it can be locked
Is formed of a pair of locking projections 23a, 23a protruding from the lower surface of. At the tip of each of the locking projections 23a, 23a, there is formed a slope inclined inward so that the relay connector G can be easily inserted, and a stopper for preventing the relay connector G once locked from easily coming out. Claws 23b, 23
b is formed. In addition, the locking part 23 is a relay connector G
Is locked so that the sensor head (not shown) is not obstructed when it is engaged with the lower surface of the sensor base 20.

The relay connector G is separately procured as needed, and has a square box shape as shown in FIG. 2. By simply inserting the core wires of the signal cables F _{1 and} F ₂ into one side surface, the relay connector G is inserted. Four core wire insertion holes (not shown) each having a quick connection terminal mechanism capable of electrical connection are provided. Incidentally, in the relay connector G shown in FIG. 2, is inserted and the core wire F _13, F ₁₄ and the signal wire F _23, F ₂₄ of the cable F ₂ of the signal cable F ₁ shown in FIG. 1, relay the core wire F ₁₃ and the core wire F ₂₃ within the connector G is made to the core wire F ₁₄ and the core wire F ₂₄ is electrically connected.

Therefore, the sensor base 20 as described above
It can be mounted on the ceiling as follows and a signal cable
Le F_1,F_TwoCan be connected to the sensor head (not shown).
) Is used as a fire detector. That is, heaven
Signal cable F laid on the backside _1,F_TwoThe ceiling (shown
)), And pull out the signal cable F_1,F_Two
Through the cable hole 21 of the sensor base 20. And
Attachment part for attaching to the ceiling of sensor base 20 (illustrated
To the ceiling using Then the signal cable
F₁Core wire F_11,F₁₂And signal cable F_TwoCore wire F_{twenty one,}
F_{twenty two}Are inserted into the connection terminals 22 and connected.
And the signal cable F to the relay connector G₁
Core wire F_13,F₁₄And signal cable F_TwoCore wire F_{twenty three,}F_{twenty four}
Are inserted and connected. To this relay connector G
Core wire F_13,F_14,F_{twenty three,}F_{twenty four}Insertion in narrow areas
Not so good workability. After that, the relay connector G is engaged.
It is locked to the stop 23. After that, it is detected by the detector base 20
Attach the container head. At this time, the relay connector G is in the way.
Causes poor mounting and contact of the sensor head
Absent. And a fire detector attached to the ceiling (not shown)
It becomes.

The present invention is not limited to the above embodiment, and the position of the locking portion for the relay connector may be anywhere on the fire detector as long as it does not interfere. It goes without saying that a fire detector in which the sensor base and the sensor head are integrated may be used.

[0021]

Since the fire detector according to the present invention is constructed as described above, it is only necessary to procure a relay connector of another part only when relaying of an electric wire for another purpose is necessary, which is an unnecessary cost increase factor. If it is necessary to relay the other-purpose electric line, it is necessary to relay the other-purpose electric line and send and connect it (relay connector) to a position where it can be securely fixed without getting in the way. This has the effect of providing a container.

[Brief description of the drawings]

FIG. 1 is a bottom view showing a state in which a wire path is connected to a sensor base of a fire detector according to an embodiment of the present invention, and wiring is carried out.

FIG. 2 is a perspective view showing a state where an electric wire is connected to a relay connector for a fire detector according to an embodiment of the present invention.

FIG. 3 is a side view showing a state where the relay connector is locked to the locking portion of the fire detector according to one embodiment of the present invention.

FIG. 4 is a wiring connection diagram showing an example of a wiring connection between a fire receiver and a fire detector.

FIG. 5 is a wiring connection diagram showing another example of the wiring connection between the fire receiver and the fire detector.

FIG. 6 is a perspective view showing a state in which a wire path is connected to a sensor base of a conventional fire detector and sent and wired.

[Explanation of symbols]

22 Connection terminal 23 Locking portion F _1n electric wire (where n is an integer of 1 or 2) F _1n Other purpose electric wire (where n is an integer of 3 or 4) F _2n electric wire (where n is an integer of 1 or 2) ) F _2n other purpose electric line (where n is an integer of 3 or 4) G Relay connector

Claims (1)

(57) [Claims] The fire detector includes a connection terminal to which an electric wire for the fire detector is connected, and a feed wiring connection terminal for feeding and wiring the electric wire connected to the connection terminal. A fire detector that can relay and send wiring using a relay connector of another part as necessary also for other purposes other than the above, wherein a locking portion for the relay connector is provided. Features a fire detector.