JP2004206281A - Detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detector in which malfunctions due to falling of a dry cell cannot happen without the risk of falling of the dry cell even if a cover main body is turned over or the like. <P>SOLUTION: The detector 1 is composed of a base main body 2 fixed to an attaching surface and the cover main body 3 freely attachably and detachably connected to the base main body 2 by a turning operation. The cover main body 3 incorporates a detection means and a battery housing recessed part 15 for housing the dry cell 14 is formed on a back surface facing the base main body 2. The battery housing recessed part 15 is provided with stoppers 16 and 17 for supporting the dry cell 14 so as not to fall. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a detector such as a fire alarm and the like, and more particularly, to a storage structure of a dry battery and a storage structure of an electric wire as a driving power source thereof.
[0002]
[Prior art]
Some of the detectors for detecting the occurrence of a fire or the presence of a person use a dry battery as a driving power source. As a first conventional example, a detector as shown in a sectional view of FIG. 51 (for example, see Patent Document 1). The detector 51 is, for example, a fire alarm, and includes a mounting base 53 fixed to a mounting surface 52 such as a ceiling surface of the building by screws, and a cover 54 detachably connected to the mounting base 53. It has.
[0003]
The attachment base 53 provided in the detector 51 accommodates an electronic circuit component 55 and a dry battery 56 as detection means, and the cover 54 closes an opening of the attachment base 53 as the cover 54 is connected. ing. The electronic circuit component 55 at this time is, for example, for detecting a fire and outputting a detection signal. The dry battery 56, which is the driving power source of the electronic circuit component 55, is replaced with a new one as the exhaustion occurs. Is done.
[0004]
[Patent Document 1]
JP-A-9-293181
[Problems to be solved by the invention]
In the detector 51 described above, an electronic circuit component 55 and a dry battery 56 are housed in a mounting base 53. Therefore, when fixing the attachment base 53 to the mounting surface 52, a work which is difficult in terms of weight is required. On the other hand, when replacing the dry battery 56, especially when the mounting surface 52 is a ceiling surface, the replacement work is performed at a high place, and it is assumed that the dry battery 56 may be dropped. Is required.
[0006]
In order to avoid this kind of inconvenience, a detector 61 whose exploded state is shown in the perspective view of FIG. 8 and the sectional view of FIG. 9 has already been proposed as a second conventional example. That is, the detector 61 includes a base plate 62 fixed to a mounting surface 52 such as a ceiling surface of a building, and a cover body 63 detachably connected to the base plate 62. Reference numeral 64 in the drawing denotes mounting screws, and the base plate 62 is fixed to the mounting surface 52 by these mounting screws 64.
[0007]
The cover body 63 here incorporates an electronic circuit component 55 as a detection means, and has a dry battery on its back surface, that is, on the back surface of the cover body 63 facing the base plate 62 as it is connected. A battery housing recess 65 for housing the battery housing 56 is formed. That is, in the detector 61, as the cover body 63 is connected to the base plate 62, the battery housing recess 65 housing the dry battery 56 is closed by the base plate 62.
[0008]
A locking piece 66 is formed in the base plate 62, while a locking hole 67 is formed in the cover body 63, and the locking piece 66 and the locking hole 67 are formed by rotating the cover body 63. The cover body 63 is connected to the base plate 62 with the engagement of.
[0009]
The base plate 62 of the detector 61 is merely fixed to the mounting surface 52, and the heavy electronic circuit component 55 and the dry battery 56 are attached to the cover body 63 detachably connected to the base plate 62. It is stored in. Therefore, if the detector 61 is used, fixing the base plate 62 from which the cover body 63 has been removed to the mounting surface 52 does not require a heavy weight operation.
[0010]
When replacing the dry battery 56, after removing the cover body 63 from the base plate 62 fixed to the mounting surface 52, the replacement of the dry battery 56 into the battery storage recess 65 of the cover body 63 is performed by the operator. It is possible to perform at the position. Therefore, even if the mounting surface 52 of the detector 61 is a ceiling surface, replacement work at a high place becomes unnecessary, and the dry battery 56 cannot fall from a high place.
[0011]
However, in the detector 61 having such a configuration, since the dry battery 56 is merely stored in the battery storage recess 65 of the cover main body 63, when the operator accidentally turns the cover main body 63 over, or the like. At the same time, the dry battery 56 may fall off from the battery storage recess 65. If the operator connects the cover body 63 to the base plate 62 without noticing that the dry battery 56 has come off, there is a problem that the detector 61 malfunctions.
[0012]
The present invention has been made in view of this kind of inconvenience, and even if the cover body is turned over, there is no possibility that the dry battery will fall off, and a malfunction that does not occur due to the dry battery falling off can occur. The purpose is to provide a detector that has been identified.
[0013]
[Means for Solving the Problems]
The detector according to the first aspect of the present invention comprises a base body fixed to a mounting surface, and a cover body detachably connected to the base body by a rotation operation, wherein the cover body is A battery storage recess for incorporating the detection means and for storing the dry battery is formed on the back surface facing the base body, and the battery storage recess is provided with a stopper for supporting the dry battery so as not to fall off. It is characterized by having.
[0014]
The detector according to the second aspect of the present invention is the detector according to the first aspect, wherein the stopper corresponds to each of the dry batteries, and a positive electrode piece surrounding the positive electrode of each dry battery, It is characterized by comprising a negative electrode side piece projecting on the negative electrode side end.
[0015]
A detector according to a third aspect of the present invention is the detector according to the first or second aspect, wherein a wiring space for accommodating an electric wire is provided in the base body, and the wiring space for the electric wire is provided in the wiring space. The present invention is characterized in that an electric wire pressing piece for preventing lifting is provided.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an exploded perspective view showing the entire structure of a detector according to the present embodiment, FIG. 2 is an explanatory view showing a surface side structure of a base body provided in the detector, and FIG. FIG. 5 is an explanatory view showing a back side structure of a cover main body. FIG. 4 is a cross-sectional view of a main part showing a state in which a dry battery is being stored in the detector, FIG. 5 is a perspective view of a main part showing an end structure of a battery storage recess, and FIG. It is principal part sectional drawing which shows a time state. 1 to 6, reference numeral 1 denotes a detector, 2 denotes a base body, and 3 denotes a cover body.
[0017]
The detector 1 according to the present embodiment is, for example, a fire alarm, and as shown in FIG. 1, a base body 2 attached and fixed to an attachment surface (not shown) such as a ceiling surface or a wall surface of a building. And a cover main body 3 detachably connected to the base main body 2 by a rotation operation. The base body 2 is a substantially circular bottomed cylindrical container made of an insulating synthetic resin or the like, and the back surface of the bottom surface is brought into contact with a mounting surface by a mounting screw 5 inserted through a through hole 4 formed in the bottom surface. It is fixed in contact.
[0018]
As shown in FIG. 2, a wiring space 7 for accommodating electric wires 6 such as signal lines for communication with an external device such as an alarm buzzer is provided on the surface of the bottom portion of the base body 2. The connection-side end of the electric wire 6 drawn in from the electric wire opening 9 formed in the vicinity of the peripheral wall 8 of the base body 2 is connected to a fixing screw terminal 10 to conduct. The wire holding pieces 13 are provided at predetermined positions in the wiring space 7, and the wires 6 are prevented from floating by the wire holding pieces 13.
[0019]
That is, here, since the lifting of the electric wires 6 is prevented by the electric wire pressing pieces 13, the electric wires 6 stored in the base main body 2 do not float and hinder the connection work of the cover main body 3. In consideration of the fact that the detector 1 may be fixed to the wall of the building, in the present embodiment, the pair of openings 9 are positioned at substantially equal intervals in the circumferential direction, specifically, symmetrical. At different positions.
Also, signal transmission connection terminals 11 having a so-called crocodile structure are provided at positions along the peripheral wall 8 of the base body 2, and these connection terminals 11 are electrically connected to the screw terminals 10 separately. Further, at the outer end of the peripheral wall 8 of the base body 2, a position where the plurality of locking pieces 12 are substantially equally spaced along the circumferential direction, specifically, the pair of locking pieces 12 is symmetrical. Formed at the location. In addition, each of the locking pieces 12 is bent toward the inside of the bottom surface portion, and is in a direction opposite to each other.
[0020]
On the other hand, the cover main body 3 provided in the detector 1 is a substantially circular hollow container made of an insulating synthetic resin or the like, and has a slightly larger diameter than the base main body 2. Various electronic circuit components (not shown) serving as detection means are built in the cover body 3, and as shown in FIG. 3, a replaceable back surface of the cover body 3 facing the base body 2 is provided. A battery housing recess 15 for housing a dry battery 14 for power supply, that is, a battery housing recess 15 having a substantially rectangular shape in plan view and a predetermined depth is formed.
[0021]
The battery accommodating recess 15 accommodates and holds, for example, four dry batteries 14. Both sides of the dry batteries 14 housed in a parallel state in which positive (+) poles and negative (−) poles are alternately reversed. As shown in FIGS. 4 and 5 in an enlarged manner, stoppers are provided at the end portions for each of the dry batteries 14 and for supporting each of the dry batteries 14 so as not to fall off. That is, on the positive electrode side of each dry battery 14, a positive electrode side piece 16 extending from the end of the battery housing recess 15 and surrounding the positive electrode 14a is formed.
[0022]
Further, on the negative electrode side of each dry battery 14, a negative electrode side piece 17 extending from the end of the battery accommodating recess 15 and projecting on the negative electrode side end 14b is formed. And the negative electrode side piece 17 functions as a stopper. Therefore, in the detector 1 according to the present embodiment, when the dry battery 14 is replaced with the battery storage recess 15 of the cover main body 3 removed from the base main body 2 or the like, the operator may accidentally turn the cover main body 3 upside down. Even if there is, the dry battery 14 will not fall off from the battery storage recess 15.
[0023]
In addition, each of the negative electrode side pieces 17 functioning as stoppers is formed at a position having a height level substantially equal to that of the electric wire pressing piece 13 of the base body 2, and as shown in FIG. Care is taken in advance so that 17 does not interfere with the wire holding piece 13. Further, reference numeral 18 in the drawing denotes a positive contact which is electrically connected to the positive electrode 14a of the dry battery 14, and 19 denotes a negative spring which is electrically connected to the negative electrode of each dry battery 14.
[0024]
Further, on the back surface of the cover main body 3, there are provided connection contacts 20 which are electrically connected to each other as being sandwiched between the connection terminals 11 of the base main body 2, and these connection contacts 20 are electrically connected to the electronic circuit components. ing. Furthermore, on the back surface of the cover body 3, a plurality of locking holes 21 are formed at positions at substantially equal intervals along the circumferential direction, specifically, symmetrical positions. Each of the locking holes 21 is engaged with the locking piece 12 of the base body 2 by the rotation operation.
[0025]
That is, as shown in an enlarged manner in FIG. 6, the cover main body 3 is connected to the base main body 2 such that the locking pieces 12 are engaged with the locking holes 21 by a rotation operation, and And is positioned and fixed on the mounting surface via. At this time, the connection contact 20 is held between the connection terminals 11 to conduct, and the opening of the battery housing recess 15 housing the dry battery 14 is closed by the base body 2. As a result, it is unlikely that the dry battery 14 falls out of the battery storage recess 15 of the cover body 3 connected to the base body 2.
[0026]
By the way, the detector 1 according to the present embodiment is not limited to a fire alarm, and may detect a person or the like. Further, the detector 1 here may be a smoke detecting type including a light projecting element, a light projecting lens, a light receiving element, an optical bench having a built-in labyrinth, or a heat detecting type using a semiconductor, or It is needless to say that a configuration that detects gas odor may be used.
[0027]
【The invention's effect】
In the detector according to the first aspect of the present invention, stoppers are provided in the battery storage recesses formed on the back surface of the cover body detachably connected to the base body, and the stoppers are used to support the dry batteries so that they cannot fall off. ing. Therefore, even when the operator mistakenly turns the cover body over, for example, when replacing the dry battery in the battery storage recess of the cover body removed from the base body, the dry battery does not fall out of the battery storage recess, and As a result, it is possible to prevent the detector from malfunctioning.
[0028]
In the detector according to the second aspect of the present invention, the stopper corresponds to each of the dry batteries, and the positive electrode side piece surrounding the positive electrode of each dry battery, and the stopper protrudes from the negative electrode side end. And the negative electrode side piece. Thus, an effect is obtained in that it is possible to effectively and reliably prevent a single battery from falling off.
[0029]
In the detector according to the third aspect of the present invention, a wiring space for accommodating the wires is provided in the base body, and a wire holding piece for preventing the wires from floating is provided in the wiring space. Therefore, the advantage is obtained that it is possible to prevent the electric wires stored in the base body from floating and hinder the connection work of the cover body.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing the entire structure of a detector according to the present embodiment.
FIG. 2 is an explanatory diagram showing a surface side structure of a base body provided in the detector according to the present embodiment.
FIG. 3 is an explanatory diagram showing a back-side structure of a cover main body provided in the detector according to the present embodiment.
FIG. 4 is an enlarged cross-sectional view of a main part of the detector according to the present embodiment, showing a state in which a dry battery is being stored.
FIG. 5 is an enlarged cross-sectional view of a main part showing a state in which a dry battery is being stored in the detector according to the present embodiment.
FIG. 6 is an enlarged cross-sectional view of a main part of a state where the base body and the cover body of the detector according to the present embodiment are connected to each other.
FIG. 7 is a cross-sectional view showing an attached state of a detector according to a first conventional example.
FIG. 8 is a perspective view showing an exploded state of a detector according to a second conventional example.
FIG. 9 is a sectional view showing an exploded state of a detector according to a second conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Detector 2 Base main body 3 Cover main body 6 Electric wire 7 Wiring space 13 Electric wire holding piece 14 Dry battery 15 Battery storage recess 16 Positive side piece (stopper)
17 Negative side piece (stopper)

Claims (3)

A detector comprising a base body fixed to the mounting surface and a cover body detachably connected to the base body by a rotation operation,
The cover main body has a built-in detecting means, and a battery housing recess for housing a dry battery is formed on a back surface facing the base body, and the battery housing recess supports the dry battery in a detachable manner. A detector provided with a stopper. The stopper corresponds to each of the dry batteries, and comprises a positive electrode piece surrounding the positive electrode of each dry battery and a negative electrode piece protruding from the negative electrode end. The detector according to claim 1. The said base main body was provided with the wiring space which accommodates an electric wire, The said wiring space is provided with the electric wire holding piece which prevents the floating of the said electric wire, The Claim 1 or Claim 2 characterized by the above-mentioned. Detector as described.

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