CN101140244B

CN101140244B - Fire detector

Info

Publication number: CN101140244B
Application number: CN2007101476693A
Authority: CN
Inventors: 东健太郎
Original assignee: Nohmi Bosai Ltd
Current assignee: Nohmi Bosai Ltd
Priority date: 2006-09-05
Filing date: 2007-08-31
Publication date: 2010-11-10
Anticipated expiration: 2027-08-31
Also published as: JP2008065405A; CN101140244A

Abstract

The present invention provides a fire detector, and the cable leading-out part which is arranged in the casing box can get to the random direction and can accommodate the cable remainder in the fire detector accommodating box. The fire detector includes the following components: a light-receiving window which permeates the radiating light of the flame generated in the fire disaster; a casing cover which is installed with the light-receiving window; and a casing box which is provided with a cable leading-out part that is used to lead in the power line connected with the receiving part and inosculates with the casing cover to form a basket body, wherein, the casing cover is arranged with an installing part which does installing to the accommodating box of the fire detector.

Description

Fire detector

Technical field

The present invention relates in the fire detector storage case to be provided with the fire detector of cable lead division of the power lead etc. of casing box side with any direction.

Background technology

In the past, the tunnel fire detector was case lid to be installed constituting main body in the front of casing box, and will be arranged on the base etc. that a pair of installation sheet on the main body bottom surface is fixed on case shape main body.Therefore, the water-proof connector of the main body side of fire detector is in identical direction (for example, referring to patent documentation 1) all the time.

1: the No. 3619428 patent gazettes of patent documentation

Summary of the invention

Tunnel fire detector in the past is fixed on lower right in the case shape main body to the water-proof connector of main body side usually.Therefore, be provided with at the above-below direction of case shape main body and introduce with the pipeline of signal wire or under the slimming because of storage case causes connecting up the less situation of remaining space, introduce usefulness signal wire and detecting device with signal wire to be connected operation bad.

In order to address the above problem, the object of the present invention is to provide a kind of fire detector, its installation portion that is fixed in the fire detector storage case (casing) is arranged on the case lid, and, by changing the chimeric direction of case lid and casing box, can make the cable lead division of casing box arrive any direction.

Fire detector of the present invention is fixed on the base of fire detector storage case, and on described fire detector storage case, be connected with to introduce and use pipeline, introduce in the described fire detector storage case with signal wire introducing with pipeline by described introducing, it is characterized in that comprising: be subjected to optical window, make the flame radiation light transmission that produces by fire; Case lid is equipped with the above-mentioned optical window that is subjected to; And casing box, on its sidewall, has the cable lead division that is used to introduce the power lead that is connected with acceptance division, and with the chimeric formation basket of above-mentioned case lid, wherein, on above-mentioned case lid, be provided with the installation portion of installing to the base of described fire detector storage case, and described case lid and described casing box installed the described cable lead division that makes described casing box and described introducing coincide with the position of pipeline.

Fire detector of the present invention, because the cable lead division can arrive any direction, so can make and with each the introducing that on-the-spot different fire detector storage case is connected is set and match with the position of pipeline and the direction of cable lead division, therefore, can hold the cable remainder in the fire detector storage case, in addition, even the fire detector storage case is realized slimming, operation can not reduce yet.

Description of drawings

Fig. 1 is the front elevation of the fire detector 20 of first embodiment of the invention.

Fig. 2 is the side view of the fire detector 20 of first embodiment of the invention.

Fig. 3 is for being installed in the fire detector 20 of first embodiment of the invention the front elevation in the fire detector storage case 10.

Fig. 4 is the A-A sectional drawing of Fig. 3.

Fig. 5 is the front elevation of the fire detector 20A of second embodiment of the invention.

Fig. 6 is the side view of the fire detector 20A of second embodiment of the invention.

Fig. 7 is for being installed in the fire detector 20A of second embodiment of the invention the front elevation in the fire detector storage case 10A.

Fig. 8 is the B-B sectional drawing of Fig. 7.

Fig. 9 wants portion's enlarged drawing for the cable lead division 21 of expression fire detector 20 of the present invention.

Figure 10 be fire detector 20 of the present invention cable lead division 21 want portion's sectional drawing.

Description of reference numerals

1 casing box

2 case lid

3 are subjected to optical window

4,4A installation sheet

5,5a cable lead division

6,6a cable

7 housing gib screws

8 test burner bulbs

10,10A fire detector storage case

The 10b front panel

10a storage case main body

11 bases

12 recesses

13 walls

14 first holes

15 opposite walls

16 second holes

17 packing rings

18 cementing agents

20,20A fire detector

Embodiment

Fig. 1 is the front elevation of the fire detector 20 of first embodiment of the invention.Fig. 2 is the side view of the fire detector 20 of first embodiment of the invention.Fig. 3 is for being installed in the fire detector 20 of first embodiment of the invention the front elevation in the fire detector storage case 10.Fig. 4 is the A-A sectional drawing of Fig. 3.In addition, fire detector storage case 10 is made of storage case main body 10a and front panel 10b, and Fig. 3 and Fig. 4 are for installing front panel 10b state before.

In fire detector 20, by housing gib screw 7, with 90 ° interval, be screwed four positions to have and be roughly half elliptic and be subjected to the case lid 2 of optical window 3 and pair of cylinders shape test burner bulb 8 and the casing box 1 that has cable lead division 5 in the side.Wherein, be provided with the contents of not representing among the figure such as printed circuit board (PCB) in case lid 2 one sides with photo detector and circuit component etc.In addition, the installation sheet 4 of fire detector 20 is arranged on the case lid 2, and forms installation sheet 4 in the mode of stretching out along peripheral direction from front one side of case lid 2.By screw etc. described installation sheet 4 is fixed on the base 11, this base 11 is arranged on the inboard base plate of case shape of the storage case main body 10a that constitutes fire detector storage case 10.In addition, installation sheet 4 is arranged on apart from case lid 2 surfaces and only holds on the height of distance of nut and pad, but also it can be arranged on the face identical with case lid 2 surfaces.

For example, in the normal place of the cable lead division 5 that makes fire detector 20 under bottom-right situation, under the state of removing housing gib screw 7, if make case lid 2 with respect to casing box 1 position of half-twist to the right, housing gib screw 7 is installed once more, then shown in double dot dash line, the position of the cable lead division 5 of fire detector 20 can move to upper right side (5a).Equally, the position of the cable lead division 5 of fire detector 20 also can move to upper left side or the lower left that does not have expression among the figure.And then, by changing the installation site and the installation interval of housing gib screw 7, can set the cable lead division 5 of fire detector 20 towards any direction.

These operations can separately be carried out in advance during fabrication, but the pipeline that does not have expression in the figure that changes fire detector storage case 10 according to the situation in the tunnel is introduced under the situation of position, also can remove the housing gib screw 7 of fire detector 20 then and there, the cable lead division 5 of casing box 1 is moved to only direction.And, the installation sheet 4 of fire detector 20 is fixed on the base 11 of storage case main body 10a, after the introducing that will not have expression among cable 6 and the figure is connected with signal wire, front panel 10b is installed on the storage case main body 10a.As a result, be subjected to optical window 3 and the test burner bulb 8 of fire detector 20 are exposed on the external by the peristome of front panel 10b.

On the other hand, because the space constraint of tunnel internal requires fire detector storage case 10 to realize slimming.Therefore, in fire detector storage case 10, between the backplate of the back side of the casing box 1 of fire detector 20 and storage case main body 10a (referring to Fig. 4) very close to each other, the remainder of cable 6 only can hold along the peripheral direction of fire detector 20, but in fire detector 20 of the present invention, owing to can make the position of cable lead division 5 become any direction, therefore, can hold the remainder of cable 6 all the time.

Fig. 5 is the front elevation of the fire detector 20A of second embodiment of the invention.Fig. 6 is the side view of the fire detector 20A of second embodiment of the invention.Fig. 7 is for being installed in the fire detector 20A of second embodiment of the invention the front elevation among the fire detector storage case 10A.Fig. 8 is the B-B sectional drawing of Fig. 7.

In second embodiment, fire detector 20A is fixed on the front panel 10b that constitutes fire detector storage case main body 10a by screw.Like this, the installation sheet 4A of fire detector 20A is arranged on the surface of case lid 2, still, also can as first embodiment these installation sheets be arranged on the height of case lid 2 surperficial certain distances.Then, on the screw division with the fixing front panel 10b that not have expression in the drawings of the installation sheet 4A of fire detector 20A, after the introducing that will not have among cable 6 and the figure to represent is connected with signal wire, front panel 10b is installed on the storage case main body 10a.Therefore, in second embodiment, owing to will not be arranged on the storage case main body 10a by base, so compare with first embodiment, the connection operation of cable 6 is better.

Fig. 9 and Figure 10 are the wanting portion's enlarged drawing and want portion's sectional drawing of cable lead division 5,5a of fire detector 20.Be arranged in the sidewall of the recess 12 that is wholely set with casing box 1, with the total wall 13 of casing box 1 on first hole 14 and second hole 16 that is arranged on the opposite walls 15 be coaxial setting.When cable 6,6a in recess 12 along being parallel to the drawing after direction passes between each hole of cable 6,6a, fill the inside of recesses 12 with cementing agent 18.In addition, the volume of recess 12 is according to the water proofing property that cementing agent 18 fully is filled in the cable lead division 5 that satisfied around the cable 6,6a, 5a and resists the form that requires of drawing intensity to determine.

Be pressed into the packing ring 17 in each hole, protection cable 6,6a directly do not contact the inside surface in each hole of casing box 1, but can not adopt packing ring yet.In addition, even between the internal diameter in the external diameter of the cable 6 that runs through recess 12,6a and each hole, the slit is arranged, owing to selected the cementing agent of high viscosity type, so cementing agent 18 can not spill from each hole in curing yet.In addition, cementing agent 18 can also can replace cementing agent 18 with filled silicon rubber for epoxy system or polyurethane series cementing agent.

Below, the cable lead division 5 in each embodiment of the present invention, the assemble method of 5a are described.At first, packing ring 17 is pressed in second hole 16 of first hole 14 of wall 13 of recess 12 of casing box 1 and opposite walls 15.Then, cable 6,6a with the connecting portion that does not have expression among the figure are passed between each hole.In this state, cementing agent 18 is filled in recess 12 after, it is solidified with the stipulated time, then can obtain to guarantee cable lead division 5, the 5a of water proofing property and tensile strength.

Different with described casing box 1, the circuit board etc. that is subjected to optical window 3 and the optical system components that comprises the detecting element that does not have expression among the figure is housed is installed on the case lid 2.At last, do not have the circuit board of expression to be connected among the connecting portion that makes cable 6,6a and the figure, and case lid 2 is installed on the casing box 1 to finish assembling.

In the present embodiment, because be provided with casing box 1, be wholely set recess 12 on case lid 2 outsides, be arranged in the sidewall of recess 12 with the total wall 13 of casing box 1 on first hole 14, be arranged on second hole 16 on the opposite walls 15, run through cable 6, the 6a in first hole 14 and second hole 16 and be filled in cementing agent 18 in the recess 12, therefore, the cable lead division 5 of fire detector 20,5a need not to use cable seal gland or water-proof connector, thereby can the low-cost water proofing property of also guaranteeing the filling part of cable 6,6a for a long time.In addition, be pressed into packing ring 17 respectively in first hole 14 and second hole 16, protection cable 6,6a directly do not contact casing box 1.

Claims

1. fire detector, be fixed on the base of fire detector storage case, and on described fire detector storage case, be connected with to introduce and use pipeline, introduce in the described fire detector storage case with signal wire introducing with pipeline, it is characterized in that comprising by described introducing:

Be subjected to optical window, make the flame radiation light transmission that produces by fire;

Case lid is equipped with the described optical window that is subjected to;

And casing box, on its sidewall, have the cable lead division that is used to introduce the power lead that is connected with acceptance division, and with the chimeric formation basket of described case lid,

Wherein, on described case lid, be provided with the installation portion of installing to the base of described fire detector storage case, and described case lid and described casing box installed the described cable lead division that makes described casing box and described introducing coincide with the position of pipeline.

2. fire detector according to claim 1 is characterized in that: described installation portion is fixed on the base on the storage case main body that is arranged at described fire detector storage case.

3. fire detector according to claim 1 is characterized in that: described installation portion is fixed on the front panel of described fire detector storage case.