JP2007244576A - Sensitive head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sensitive head having a thermosensitive body, and its protection member, sufficiently retaining required sensing properties and sufficiently protecting the thermosensitive body. <P>SOLUTION: This sensitive head 10 which includes a plurality of arms 17 and 17 having a support part 16 supporting the thermosensitive body 15 is provided with the protection plate 1-1 disposed between the plurality of arms 17 and 17 in a frontal view, protecting the thermosensitive body 15 from an external force, and including a first protection plate 2-1 extending along the length direction of the thermosensitive body 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sensing head provided with a heat sensitive body.

  As disclosed in JP-A-10-272204 (Patent Document 1), the sensing head is used for a fire extinguishing facility equipped with a simultaneous opening valve. As this sensing head, a fire extinguishing head is generally used.

JP-A-10-272204

  Some fire extinguishing heads include a heat-sensitive body that supports a valve body that closes a water spout and bursts or melts due to heat in a fire. A fire-extinguishing head equipped with this heat-sensitive body can also be used as a sensing head.

  Regarding a fire extinguishing head provided with a heat sensitive body, Japanese Patent Laid-Open No. 2001-340481 (Patent Document 2) discloses a protective member (covering wall) that covers the outer periphery of the heat sensitive body in a ring shape in order to protect the heat sensitive body from external force. What is provided with 3) is disclosed.

  However, the fire extinguishing head disclosed in Patent Document 2 is intended to be used as a fire extinguishing head, and is intended to protect the heat sensitive body while maintaining the watering performance required for the fire extinguishing head. Therefore, the protection function of the heat sensitive body is not sufficient.

  In view of the above circumstances, the present invention is a sensing head provided with a heat sensitive body and provided with a protection member thereof, capable of sufficiently protecting the heat sensitive body while sufficiently maintaining the required sensing performance. The purpose is to obtain a head.

  To describe the present invention that achieves the above object, it includes a head body having a water outlet, a valve body that closes the water outlet, a heat sensitive body that supports the valve body and bursts or melts by heat during a fire, A sensing head having a plurality of arms connected to the head body and having a support portion for supporting the heat sensitive body, and disposed between the plurality of arms in a front view to protect the heat sensitive body from an external force In the sensing head, a protection plate including a first protection plate extending along the length direction of the heat sensitive body is provided.

  Further, in the sensing head, the protective plate is provided as a pair facing the heat sensitive body therebetween.

  In the sensing head, the protection plate includes a second protection plate that is inclined and extended with respect to the length direction of the heat sensitive body.

  Further, in the sensing head, the protection plate is fixed to a tip portion of the sensing head by a fixing portion thereof.

  The sensing head is characterized in that a front end protection plate for protecting a front end portion of the sensing head is provided at a fixing portion for fixing the protection plate.

  Further, in the sensing head, the pair of protective plates are provided continuously via a fixing portion.

  Further, in the sensing head, the fixed portion is provided with a first insertion portion, and the first insertion portion is inserted with a tip convex portion provided at a tip portion of the sensing head, and The sensing head is characterized in that the insertion edge is crimped to the tip convex portion.

  In the sensing head, the protection plate has a contact portion that contacts a side surface of a flange portion provided at a connection portion between the head body and the arm. It is.

  In the sensing head, the contact portion may include a second insertion portion through which a side convex portion formed on a side surface of the flange portion is inserted. .

  In the sensing head, the second insertion portion is fitted to the side convex portion.

  The sensing head is characterized in that the first protection plate and the second protection plate are continuously provided on the protection plate.

  In the present invention, the sensing head is a protective plate that is disposed between the plurality of arms in a front view and protects the heat sensitive body from an external force, and extends along the length direction of the heat sensitive body. Since the heat-sensitive body can be sufficiently protected by the first protective plate along its length direction, while the first protective plate covers the heat-sensitive body with a flat surface, The sensing performance of the heat sensitive body can be maintained sufficiently.

  That is, according to the present invention, the sensing head can sufficiently protect the heat sensitive body while sufficiently maintaining the required sensing performance.

  An embodiment of the present invention will be described with reference to FIGS. 1 is a front view of the sensing head of the present invention in a state where a protective plate is mounted, FIG. 2 is a right side view of the same, and FIG. 3 is a plan view of the same. 4 is a development plan view of the protective plate, FIG. 5 is a partially sectional front view in a state where the protective plate is not attached, and FIG. 6 is a state in which another form of protective plate is attached. FIG. 7 is a developed plan view of the protection plate.

[First embodiment]
First, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 shows a state in which a protective plate for protecting the heat sensitive body from external force is not attached. As shown in FIG. 5, the sensing head 10 is connected to a sensing head pipe (not shown) on the outer periphery of the base. A screw body 11, a head body 13 having a water discharge port 12 inside, a valve body 14 that closes the water discharge port 12, a valve body 14 that supports the heat sensitive body 15 that bursts or melts by heat in the event of a fire, and is connected to the head body 13 And a pair of left and right arms 17 and 17 each having a distal end connecting portion 16 as a support portion for supporting the heat sensitive body 15.

  The sensing head 10 is provided with a protective plate 1-1 which is a first protection plate for protecting the heat sensitive body 15 from external force. That is, as shown in the front view of FIG. 1, an example of a first protective plate that is disposed between the arms 17 and 17 of the sensing head 10 in a front view and extends along the length direction of the heat sensitive body 15. Heat sensitive body protection constituted by a certain vertical protective piece 2-1 and inclined protective pieces 3-1 and 3-1 which are examples of a second protective plate extending inclined with respect to the length direction of the heat sensitive body 15. As shown in the side view of FIG. 2, a pair of protective plates 1-1 having a portion 1a-1 are provided so as to face the heat sensitive body 15 (in the drawing, it is a shadow of the arm 17). .

  In the protection plate 1-1, the heat-sensitive body protection part 1a-1 has a home base-like shape as a whole, a vertical protection piece 2-1 at the center thereof, and an inclined protection piece 3 on the left and right continuously. A pair of -1 and 3-1 are arranged between the arms 17 and 17 when viewed from the front.

  The protective plate 1-1 has an abutting portion 4 that abuts against a side surface 18a of a flange portion 18 provided at a connection portion between the head main body 13 and the arms 17 and 17, and the abutting portion 4 has a flange portion. It has the insertion part 4a through which the side convex part 18b formed in the side surface 18a of 18 is penetrated.

  Further, the protective plate 1-1 is fixed to the front end portion 19 of the sensing head 10 by a fixing portion 5 provided at the base portion thereof, but a pair of protective plates 1 provided to face the heat sensitive body 15 therebetween. 1 and 1-1 are continuously formed through the fixing portion 5. In this embodiment, the fixing portion 5 has a rectangular tip protection plate 6 for protecting the tip 19 side of the sensing head 10. Is provided. That is, the pair of protective plates 1-1 and 1-1 have a shape as shown in the developed front view of FIG.

  An insertion portion 7 is formed in the fixing portion 5 of the pair of protection plates 1-1 and 1-1. In the pair of protective plates 1-1 and 1-1, the insertion portion 7 is inserted into the front end convex portion 19a provided at the front end portion 19 of the sensing head 10, and the insertion edge 7a is caulked to the front end convex portion 19a. (See FIGS. 1, 2, and 3), which is fixed to the sensing head 10. Further, as described above, in the protective plate 1-1, the side convex portion 18b of the sensing head 10 is inserted and fitted into the insertion portion 4a of the abutting portion 4, thereby the pair of protective plates 1-1. , 1-1 are fixed so as to stick to the flange side surface 18a of the sensing head 10, so that the positional deviation is prevented from being applied to the impact from the left and right directions when viewed from the front, and the impact force can be dispersed. It has become.

  The sensing head 10 uses the surface 18c of the flange side protrusion 18b and the surface 6a of the tip protection plate 6 of the protection plate 1-1 as character display surfaces necessary for the sensing head. Characters are displayed by stamping necessary characters or sticking a sticker with characters.

[Second and third embodiments]
Next, a second embodiment of the present invention will be described with reference to FIGS.

  The second embodiment is different in configuration from the first embodiment in that the shape of the protection plate and the tip protection plate are not provided integrally. Other configurations in the second embodiment are the same as those in the first embodiment, and the same reference numerals are given and description thereof is omitted.

  As shown in FIGS. 6 and 7, the protection plate 1-2 in the second embodiment is an example of a first protection plate that extends along the length direction of the heat sensitive body 15. 2 and an inclined protective piece 3-2 which is an example of a second protective plate extending inclined with respect to the length direction of the heat sensitive body 15, the vertical protective piece 2-2 and the inclined protective piece. The shape of the heat-sensitive body protection part 1a-2 formed by the piece 3-2 is different from that of the first embodiment.

  That is, the heat-sensitive body protection part 1a-2 in the second embodiment has a bowl-like shape as a whole, and the vertical protection piece 2-2 is at the center of the tip 2a of the vertical protection piece 2-2. -2, a pair of folded back protective pieces 3-2 and 3-2 are disposed between the arms 17 and 17 in front view. Note that gaps 3b-2 and 3b-2 are formed between the ends 3a-2 and 3a-2 of the folded inclined protective pieces 3-2 and 3-2 and the vertical protective piece 2-2.

  Further, the heat-sensitive body protection plate 1-2 in the second embodiment is fixed to the front end portion 19 of the sensing head 10 by the fixing portion 5 in the same manner as the protection plate 1-1 in the first embodiment. A pair of protection plates 1-2, 1-2 provided facing the body 15 therebetween is continuously formed via the fixing portion 5. In the present embodiment, unlike the first embodiment, The tip protection plate 6 is not provided integrally. That is, the pair of protection plates 1-2 and 1-2 in the second embodiment has a shape as shown in the developed front view of FIG. In the second embodiment, a deflector may be attached to the sensing head 10 instead of providing the tip protection plate 6. That is, as the sensing head 10, an existing fire fighting head with a deflector can be used, and the protective plate 1-1 can be attached to the fire fighting head. Note that the present invention can also be applied to the protection plate 1-1 in the first embodiment.

  The sensing head 10 of the present invention is configured as described above, and protects the heat sensitive body of the heat sensitive body protection plates 1-1, 1-1 or 1-2, 1-2 provided with the heat sensitive body 15 facing each other. The parts 1a-1, 1a-1 or 1a-2, 1a-2 are arranged along the length direction of the heat sensitive body 15 between the pair of left and right arms 17, 17 in front view, that is, from the front and back of the heat sensitive body 15. Inclined protective pieces 3-1, 3-3 are arranged by the vertical protective pieces 2-1, 2-1, 2-2, 2-2, and inclined with respect to the length direction of the heat sensitive body 15. The sensor 15 can be protected by the one or the folded inclined protection pieces 3-2 and 3-2, and the protection is performed on a plane provided with an opening as much as possible. The sensing performance of the heat sensitive body 15 can be maintained within a required range. Since the direction of the pair of arms 17 is protected by the arm 17, and the sensitivity is worse than that of the other directions by the arm 17, the heat sensitive body protection plate 1-1, 1-1 or 1-2, 1- 2 is not protected.

It is a front view in the state where a sensing plate of the present invention is shown and a protection board is attached. It is a right view same as the above. It is a top view same as the above. It is an expansion | deployment top view of a protection board same as the above. It is a partial cross section front view in the state where the same protection plate is not attached. It is a front view in the state where the protection board of other forms same as the above is mounted. It is an expansion | deployment top view of a protection board same as the above.

Explanation of symbols

1-1 Heat-sensitive body protective plate 1-2 Heat-sensitive body protective plate 1a-1 Heat-sensitive body protective section 1a-2 Heat-sensitive body protective section 2-1 Vertical protective piece 2-2 Vertical protective piece 3-1 Inclined protective piece 3-2 Inclined Protective piece 4 Contact portion 4a Insertion portion 5 Fixed portion 6 Tip protection plate 7 Insertion portion 7a Insertion edge 10 Sensing head 11 Screw portion 12 Water outlet 13 Head body 14 Valve body 15 Heat sensitive body 16 Arm tip connection portion 17 Arm 18 Flange portion 18a Flange side face 18b Flange side convex part 18c Flange side convex part surface 19 Head tip part 19a Head tip convex part

Claims (8)

  A head body having a water outlet, a valve body that closes the water outlet, a heat sensitive body that supports the valve body and bursts or melts due to heat at the time of a fire, and is connected to the head body and supports the heat sensitive body A sensing head including a plurality of arms having a support portion, and a protection plate that is disposed between the plurality of arms in a front view and protects the heat sensitive body from an external force, along the length direction of the heat sensitive body. A sensing head comprising a protective plate including a first protective plate extending in a row.   2. The sensing head according to claim 1, wherein a pair of the protective plates are provided so as to oppose the heat sensitive member therebetween.   3. The sensing head according to claim 1, wherein the protective plate further includes a second protective plate that is inclined and extended with respect to a length direction of the heat sensitive body.   4. The sensing head according to claim 1, wherein the protective plate is fixed to a tip portion of the sensing head by a fixing portion.   5. The sensing head according to claim 4, wherein the fixing portion for fixing the protection plate is provided with a tip protection plate for protecting the tip of the sensing head.   The sensing head according to any one of claims 2 to 5, wherein the pair of protective plates are provided continuously via a fixing portion.   The fixing portion is provided with a first insertion portion, and the first insertion portion is inserted with a tip convex portion provided at a tip portion of the sensing head, and an insertion edge thereof is formed on the tip convex portion. The sensing head according to claim 4, wherein the sensing head is crimped.   The protective plate has a contact portion that contacts a side surface of a flange portion provided at a connection portion between the head main body and the arm, and the corresponding contact portion is a side convex formed on the side surface of the flange portion. 8. The device according to claim 1, further comprising: a second insertion portion through which the portion is inserted, wherein the second insertion portion is fitted to the side convex portion. Sensing head.

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