KR20010076054A - Fixed fire detector - Google Patents

Abstract

PURPOSE: A thermal fire detector is provided, to allow for the detector to be protected from the external impact and for the components to be detached and attached easily, thereby improving the reliability of the fire detector. CONSTITUTION: The thermal fire detector is operated such that a heat absorbing plate drives a bimetal by heat conduction, the bimetal switches a contact point, the electrical contact is transmitted to a heat sensor part, and the signal of the heat sensor part is transmitted to an alarm device through a base, wherein an auxiliary outer box(170) is received in an auxiliary outer box insertion hole(110) of an outer box(110) and fixed to the insertion hole(110) by a sticking member(181). The auxiliary outer box(170) comprises a sensing part insertion hole(173) and a heat absorbing plate supporting face(171) and a holder fastening projection(172); and a protection ring(112) is formed at the outer box(110) in a body.

Description

Fixed fire detector

The present invention relates to a constant temperature fire detector, and more particularly, a constant temperature fire having a heat absorbing plate provided so that a switching element is triggered to operate an alarm device by turning on a contact by detecting a heat sensor when the fire occurs. It's about the enclosure of the detector.

In general, fire detectors attached to a ceiling or a wall for detecting a fire of a building, etc., are classified into a constant temperature, a differential type, an ion type, and a photoelectric type according to a structure.

Here, the constant temperature fire detector is composed of a heat detection unit for sensing the heat to switch the contact point and the base for converting the temperature change detected by the heat detection unit to a predetermined signal and transmitted to the alarm device.

Here, as shown in FIG. 1, the heat sensing unit and the base have an attachment terminal 181 as shown in FIG. 2 fixed to the bottom of the heat sensing unit 100, and the base 10 is coupled to the attachment terminal 181. ) Is provided with a coupling means to the holding terminal (11), and the heat sensing unit 100 is rotated to attach and detach from the base (10).

In addition, a wire inlet is formed in the holding terminal 11 to insert a wire drawn from an external receiving panel to configure a circuit with the heat sensing unit 100.

The present invention relates to a thermal sensing unit enclosure of a thermostatic sensor, and is described by Korean Utility Model No. 073977, which is registered by the present applicant with respect to the wiring binding structure of the base, and thus there is no direct relationship with the present application. Omit.

The prior art related to the heat detection unit of the constant temperature fire detector will be described with reference to FIG.

The operation unit assembled to the heat absorbing plate 410 is seated on the support 491 of the enclosure 490, and the movable contact guide 430 and the fixed contact guide 440, which penetrate into the interior of the enclosure, have respective insertion holes 472. The spring plate 473 inserted into the soldering circuit board 470 and soldered to the circuit board 470 and inserted into the spring inserting hole 471 is also soldered to the circuit board 470 and brought into contact with the upper layer of the rivet 481.

At this time, the rivet penetrates the insertion port 482 to fasten the protective cover 480 and the attachment terminal 301, and the protective cover is coupled to the enclosure 490 by the bolt 303.

In addition, the heat absorbing plate 410 and the protective cover 450 mounted on the protective ring column 491 are protected by the protective ring 493 attached to the upper surface of the support 491, and the method of attaching the protective ring 493. The silver protrusion 494 is inserted into the insertion hole 492 to be coupled.

The present invention relates to an enclosure of a constant temperature fire detector, and the configuration of the operation unit is described in Korean Invention Patent Application No. 10-2000-0002089 and Invention Patent Application No. 10-2000-0003134 filed by the present applicant. The description of the operation part of the constant temperature fire detector is omitted.

As described above, in the conventional constant temperature fire detector, there are many problems in the coupling means of the protective ring. In other words, when the thermal sensing unit 100 is detached from the base 10, the thermal sensing unit 100 is rotated until the attachment terminal 301 is detached from the holding terminal 11.

When rotating, while holding and turning the protective ring column 491, the coupling force of the protective ring is weak and often broken. The support and the protection ring have a thickness of about 3mm so as not to affect the appearance and the flow of air, and the protrusion 492 has a thickness of about 1mm, so that the binding force of the protrusion 494 is weak.

In order to integrate the protection ring with the enclosure, a sliding core must be used when manufacturing the mold, but the sliding mark protrudes to the outside and cannot be adopted in aesthetic manner.

In addition, when the lower side of the protective ring is left in the penetrating state, the inside of the enclosure 490 is transparent and cannot be considered aesthetically. Furthermore, it affects the flow of air, causing a problem in the endothermic amount of the heat absorbing plate.

In other words, the air flow around the heat absorbing plate must be smooth in order to function as the heat absorbing plate of the constant temperature fire detector. In other words, it requires the structure of the enclosure to match the convection of cold and hot air when a fire occurs.

In the conventional constant temperature fire detector, in the contact between the spring plate 473 and the upper surface of the rivet 481, the state of energization is not good because of poor contact due to corrosion and the surrounding environment and the elapse of a long time. I have a problem.

Accordingly, the present invention basically solves the problem by adopting a structure in which the attachment terminal 301 is directly soldered to the circuit board 470, and the attachment and detachment of the protective cover 480 is facilitated. In other words, in the conventional constant temperature fire detector, the protective cover 480 is combined with the enclosure by four bolts 303, which adopts a method that can be easily attached and detached due to difficulties in production and repair.

1 is a perspective view of a constant temperature fire detector

2 is an assembly configuration of the present invention

3 is a cross-sectional view of the present invention

4 is another embodiment of the present invention.

5 is a cross-sectional view according to another embodiment of the present invention.

Figure 6 is a conventional constant temperature fire detector assembly configuration

※ Explanation of code for main part of drawing ※

10: Base 11: Holding Terminal

100: heat detection unit 110: enclosure

101: light emitting diode 102: heat sink hanging jaw

111: Auxiliary enclosure insert 112: Protective ring

113: protection ring base 114: light emitting diode through hole

115: mounting terminal coupler 116: mounting terminal latching jaw

117: Positioning groove 118 Auxiliary enclosure guide surface

119: seating surface 120: heat absorbing plate

121: protective cap 130: bimetal

140: movable contact point 142: contact point

150: fixed contact stand 160: holder

170,270: auxiliary enclosure 171: heat absorbing cardboard surface

172: holder locking jaw 173: detecting part insertion opening

174,275: Position projection 175,276: Joint

180: circuit board 181: mounting terminal.

190: Protection cover 271: Holder holder

272: protrusion 273: movable contact insert

274: fixed contact stand insert

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the thermostatic sensor of the present invention is detachable by the holding terminal 11 and the attachment terminal 181 of the base 10 attached to the ceiling surface. do.

FIG. 2 is an assembly configuration diagram showing an enclosure structure accommodating the object of the present invention from the upper direction as described above, and FIG. 4 is an assembly configuration diagram showing from the down direction as another embodiment of the present invention.

Referring to the present invention with a cross-sectional view of Figure 3 as follows.

The movable contact table 140 and the fixed contact table 150 are respectively inserted into the insertion holes 162 and 163 of the holder 160 to be fixed by soldering or epoxy.

The bimetal guide 131 is inserted into the insertion hole 161 of the holder 160 to seat the bimetal on the upper side of the contact point 142.

At this time, the bimetallic support 132 can maintain a constant contact interval, the movable contact stand 140, the fixed contact point 150, the bimetal 130 is assembled to the holder 160 of the auxiliary enclosure 170 The grooves 122 and the heat absorbing plate support surface 171 of the heat absorbing plate 120 are fixed to the holder locking jaw 172 by epoxy to integrate the driving unit of the auxiliary enclosure 170 and the heat absorbing plate 120. .

The auxiliary enclosure 170 integrated with the driving unit is inserted through the auxiliary enclosure guide surface 118 into the auxiliary enclosure insertion hole 111 of the enclosure 110.

In the method of insertion, the position protrusion 174 formed on one side of the auxiliary enclosure 170 is inserted into the position groove 117 formed on the bottom of the enclosure 110, as shown in FIG. While securing the junction 175 is inserted through the auxiliary enclosure 170 until it is seated on the seating surface 119 of the enclosure (110).

The heat absorbing plate 120 inserted into the auxiliary enclosure inserting hole 111 together with the auxiliary enclosure 170 is seated on the heat absorbing plate engaging jaw 102 shown in FIG.

As described above, the driving unit such as the auxiliary enclosure 170 and the heat absorbing plate 120 assembled with the enclosure 110 are fixed by the circuit board 180 and the attachment terminal 181 installed on the bottom surface of the auxiliary enclosure 170. It is done.

This will be described in more detail as follows.

4 illustrates the bottom of the enclosure 110, the circuit board 180 is seated on the underside of the auxiliary enclosure, and the positioning of the attachment terminal 181 and the attachment terminal coupler by the attachment terminal locking jaw 116 are described below. Fasten the fixing bolt 183 with the 115 to fix the attachment terminal 181 to the enclosure (110).

At this time, the electronic component such as the light emitting diode 101 soldered and fixed to the circuit board is located inside the light emitting diode through-hole 114 and the auxiliary enclosure (170).

Then, the circuit board 180 and the attachment terminal soldering portion 184 are soldered to fix the auxiliary enclosure 170 from the enclosure 110, and the movable contact table lead 141 and the fixed contact table lead 151 inserted therethrough. Is soldered and connected to the circuit board 180 to form a circuit.

The assembled heat sensing unit 100 is completed by covering the protective cover 190 on the bottom surface. The protective cover 190 is described in Korean Utility Model Application No. 20-2000-0005825 filed by the present applicant. As follows.

The protective cover 193 is inserted into the attachment terminal 181 in one direction, and the protective cover 190 is fixed to the attachment terminal 181 in the opposite direction by the clipper 191 and the support 192.

The constant temperature fire detector of the present invention, assembled as described above, detects the ambient temperature in the heat absorbing plate 120 and the movable contact table 140 and the fixed contact table 150 are driven by the driving force of the bimetal 130. When the contact is in contact with the circuit signal configured in the circuit board 180 is sent out by the holding terminal 11 of the attachment terminal 181 and the base 10 to operate a fire alarm system (not shown).

At this time, the driving part such as the heat absorbing plate 120 is firmly protected by the protective ring pedestal 113 and the protective ring 112 formed integrally with the enclosure 110 to solve the problem of damage due to external impact.

Another effective embodiment of the present invention will be described in Figures 4 and 5 as follows.

The movable contact table 140, the fixed contact table 150, the bimetal 130, and the heat absorbing plate 120, which are inserted into the respective holders of the holder 260 and fixed by soldering or epoxy, are supplementary enclosures 270. The projection 272 of the projection insertion hole 264 is fixed by inserting the movable contact point 140 and the fixed contact point 150 through the movable contact point insertion hole (273), fixed contact point insertion hole (274), respectively The holder 260 is seated on the holder column 271.

The driving unit such as the heat absorbing plate 120 mounted on the auxiliary enclosure 270 is inserted through the auxiliary enclosure insertion hole 111, and the inserting and fixing method by the circuit board 180 is as described above.

The protection ring 112 is integrated with the enclosure 110 to facilitate the attachment and detachment of the heat detection unit 100 from the base 10, and it is possible to firmly protect the damage and the drive unit from the transport process and external shocks, thereby allowing a constant temperature fire detector. You can secure the reliability of.

In addition, by promoting the ease of attachment and detachment of the protective cover 190 provided a reduction in production costs and ease of operation.

The auxiliary enclosure that does not affect the air flow can be installed to support the driving part with beautiful appearance and reliable.

Due to this, it is possible to expect the development of related industries by providing reliability and beautiful constant temperature fire detector according to the operation of the constant temperature fire detector.

On the other hand, the present invention is not limited to the above-described specific preferred invention, any person having ordinary skill in the art to which the invention belongs without departing from the gist of the invention claimed in the claims. Will be possible.

Claims (2)

In the constant temperature fire detector provided to alarm by passing the signal of the heat detection unit for switching the contacts by driving the bimetal through the heat conduction of the heat absorbing plate through the base, Auxiliary enclosure insertion hole 111 of the enclosure 110, the protective ring 112 is integrally formed in the auxiliary enclosure 170 formed with the sensing unit insertion hole 173, the heat absorbing plate support surface 171, the holder locking step 172, etc. Constant temperature fire detector, characterized in that it is configured to be fixed to the fixed terminal 181 The method according to claim 1, wherein the holder holder (271) and the projection (272) integrally formed auxiliary enclosure (270) is a constant temperature fire detector, characterized in that it is accommodated in the auxiliary enclosure insertion opening (112) of the enclosure (110).