JP6427233B2 - Alarm - Google Patents

Description

  The present invention relates to an alarm provided with a detection unit provided with a sensor that detects a change in the external environment.

  Conventionally, as this type of alarm device, a sensor as a detection unit for detecting temperature rise and gas to be detected, and a sound emission unit for notifying a change in the external environment detected by the sensor with an alarm sound such as a sound It has been known. A technology for notifying a change in the external environment by an alarm sound or the like in an alarm device is common, so patent documents are not described.

  In the above-described alarm, when replacing the sensor, the housing is opened to access the sensor. If there is a case where the hand slips and it is difficult to open the case, it takes time to replace the sensor.

  Therefore, an object of the present invention is to provide an alarm device that can perform sensor replacement operation quickly and easily.

An alarm device according to the present invention for achieving the above object is an alarm device provided with a detection unit provided with a sensor for detecting a change in the external environment, and the first characteristic configuration thereof is that the detection unit the sensor has covering, comprises a rotary steerable sensor cover, the sensor cover includes a first operation unit which can be operated regardless of the displacement position of the sensor cover when rotating the sensor cover, the sensor cover And a second operation unit operable by the displacement position of the sensor cover when it is rotated .

This configuration can be applied to a mode in which the sensor is accessed to replace the sensor by , for example, removing the sensor cover . That is, in this configuration, the first operation unit that can always be operated regardless of the displacement position of the sensor cover, and the second operation unit that can be operated when exposed, for example, by rotating the sensor cover to displace the sensor cover Can be provided. For example, the sensor cover can be displaced to either the mounting position or the detachable position by the first operation unit that can always be operated.
The second operating unit, for example the surface is roughened, the operator can be configured to be difficult to slip when gripped by sliding movement in the withdrawal direction with a finger (e.g. index finger and thumb). The second operation unit is exposed only when the sensor cover is turned to reach the detachable position. That is, since it is not necessary to release the sensor cover when the sensor cover is in the mounting position, the second operation part does not have to be exposed. Therefore, even if the operator erroneously attempts to detach the sensor cover, since the second operation unit is not exposed, it can be visually noticed that it is not at the detachable position.

In this configuration, when the sensor is replaced, the sensor cover is first detached. In this case, the sensor cover can be quickly expose the second operating portion by the detachable position rotated by the first operating unit, at the time of withdrawal operation of the sensor cover hardly slip grips the second operating portion In the state, the sensor cover can be easily detached. Therefore, in this configuration, since the sensor cover can be quickly and easily detached when replacing the sensor, the sensor replacement operation can be performed quickly and easily.

According to a second characterizing feature of the alarm device in accordance with the present invention, the first operation portion is composed of a pair of members, and disposed at positions facing each other on the diameter of the sensor cover, and the second operation portion is a pair The sensor cover is disposed at the opposite positions on the diameter of the sensor cover .

The sensor cover can be easily rotated and displaced by disposing the first operation portion as a pair of members and arranging the first operation portion at a position opposed to each other on the diameter of the sensor cover as in the present configuration . Further, by arranging the second operation portion as a pair of members and arranging them at positions opposite to each other on the diameter of the sensor cover, the operator holds the finger (for example, forefinger and thumb) and slides easily in the disengaging direction It can be done.

It is a top perspective view which shows the alarm of this invention. It is a lower surface perspective view which shows the alarm of this invention. It is an exploded perspective view showing an alarm of the present invention. It is an exploded view of a detection part. It is an exploded view of a battery seat part. It is the principal part schematic of a detection part (mounting position). It is the principal part schematic of a detection part (detachable position). It is an important section sectional view of a sensing part seat part.

Hereinafter, embodiments of the present invention will be described based on the drawings.
The alarm device of the present invention detects a change in the external environment such as, for example, a change in concentration of the gas to be detected, and notifies the user of the change.

As shown in FIGS. 1 to 8, the alarm device X according to the present invention emits an alarm by sound through a detection unit 20 provided with a sensor 21 for detecting a change in the external environment, and an opening 11 formed in the housing 10. a sound part 30 includes a detection unit 20, the sensor 21 has covered, Ru includes a rotary steerable sensor cover 22.
The sensor cover 22 is operated by the first operation portion 22 b which can be operated regardless of the displacement position of the sensor cover 22 when the sensor cover 22 is rotated, and the displacement position of the sensor cover when the sensor cover 22 is rotated. And a possible second operation unit 22d. In the present embodiment, the first operation unit 22 b is an operation projection 22 b that is rotated when the sensor cover 22 is detached, and the second operation unit 22 d can be operated when exposed by rotating the sensor cover 22. A case where the uneven grip portion 22d is used will be described.
The sensor cover 22 can be displaced to either the mounting position or the detachable position by the rotation operation, and the uneven grip 22d formed on the surface of the sensor cover 22 is exposed when the sensor cover 22 is in the detachable position.

  The alarm device X may be any device as long as it is a portable aspect, and can be, for example, an aspect that can be worn on a helmet or clothes. In this embodiment, for example, a portable alarm is provided with a mounting connecting portion 50 which is a U-shaped clip member formed by folding an elastic metal plate through a curved portion so that the helmet can be mounted on a helmet or the like. Will be explained. Moreover, in the alarm device of this embodiment, the case where the drive power source is the dry cell 61 accommodated in the battery accommodating portion 60 will be described.

(Detection unit)
The alarm device X internally includes a detection unit 20 that detects a change in the external environment. The said detection part 20 is equipped with the sensor 21 which detects the change of external environment. As such a sensor 21, although gas sensors, such as an oxygen sensor and CO sensor, can be used, it is not restricted to this.

The gas sensor may have any form as long as it detects a gas to be detected. For example, as long as the oxygen sensor can detect oxygen gas and the CO sensor can detect carbon monoxide gas generated by incomplete combustion, a known constant potential electrolytic gas sensor can be used.
In the present embodiment, the case where a CO sensor 21 for detecting carbon monoxide gas as a gas to be detected is provided in a factory or the like will be described.

  The detection unit 20 according to the present embodiment is configured such that the cylindrical CO sensor 21, the Teflon sheet 23 and the packing 24 are covered with the cylindrical sensor cover 22 in the detection unit housing 12 of the housing 10 ( Figure 4). The sensor cover 22 is formed with an insertion hole 22a so that the gas to be detected can be inserted. The CO sensor 21 is mounted on a mounting portion 18 disposed on the main substrate 19 of the detection unit housing 12 via a substrate member 26 provided with a guide member 27. In the present embodiment, the CO sensor 21 is attached to the substrate member 26 by inserting a plurality (three) of socket pins 21a into the pin insertion holes 26a. A pair of wing portions 26A is formed around the substrate member 26. A pair of recessed portions (not shown) corresponding to the shape of the wing portion 26A is formed on the back side of the sensing portion housing portion 12, and when the substrate member 26 is attached to the sensing portion housing portion 12, the wing portion 26A. And fit in the recess. Since the pair of wing portions 26A are disposed so as not to be positioned on the diameter direction, the direction of the substrate member 26 can be easily determined when the wing portions 26A and the recess are fitted. The member 26 can be easily attached to the detector housing 12.

  In addition, a seal ring 25 is disposed on the outer periphery of the sensor cover 22, and a pair of operation protrusions 22b and a mounting groove 22c which are rotated when the sensor cover 22 is attached and detached are further formed. The pair of operation protrusions 22 b are disposed at positions facing each other on the diameter of the sensor cover 22. The protrusion 17 provided on the back surface of the housing 10 in the detector housing 12 engages with the mounting groove 22c (FIG. 4). The mounting groove 22 c guides the protrusion 17 in the axial direction of the sensor cover 22 and then guides the protrusion 17 in the circumferential direction. By holding the operation projection 22 b and rotating the sensor cover 22, the sensor cover 22 can be displaced to either the mounting position or the detachable position (FIGS. 6 and 7).

  By covering the CO sensor 21 with the sensor cover 22 and exposing the pair of operation projections 22b to the outside of the housing 10 as described above, the sensor cover 22 can be rotated to detach the sensor cover 22 when replacing the sensor. It is sufficient to move to the position, slide only the sensor cover 22 in the disengaging direction in this state, and detach the sensor after detaching. That is, since it is not necessary to open the housing | casing 10 and to detach | desorb a sensor, sensor exchange can be performed easily.

  In the present embodiment, the housing 10 is formed of two divisible members (upper and lower members). For example, water or the like enters the inside of the housing 10 around the lower member. You may provide the sealing member 80 which can prevent that. The seal member 80 is disposed along the periphery of the lower member, but is configured to be bent along the curved surface shape of the detection portion accommodation portion 12 at the position where the detection portion accommodation portion 12 is located. It is good to do. The seal member 80 may be formed of, for example, a thermoplastic resin, but is not limited thereto.

  In the alarm device X of the present invention, the uneven grip portion 22d formed on the surface of the sensor cover 22 is exposed at the detachable position.

  That is, when the sensor cover 22 is in the mounting position, the uneven gripping portion 22d is covered and not exposed by the housing 10, but the sensor cover 22 is rotated to be a detachable position by rotating the operation protrusion 22b. When it does, the unevenness grasping part 22d is exposed. In the present embodiment, two uneven gripping portions 22 d are provided, and the uneven gripping portions 22 d are disposed at positions facing each other on the diameter of the sensor cover 22. It is exposed only when the sensor cover 22 is in the detachable position in any of the uneven grip portions 22d. The uneven grip portion 22 d thus exposed is processed so as not to slip when the operator grips with two fingers (for example, forefinger and thumb), and the sensor cover 22 is gripped with two fingers. The sensor cover 22 can be easily detached by sliding in the disengaging direction.

  The uneven grip portion 22 d may be formed outside the seal ring 25. The seal ring 25 is for preventing foreign matter from entering the inside of the housing 10. Therefore, when the concavo-convex gripping portion 22 d is formed on the outside of the seal ring 25, the concavo-convex gripping portion 22 d can be disposed on the sensor cover 22 in a state in which the housing 10 is reliably sealed.

(Sound emission part)
For example, when the calculation means (not shown) described later determines that each sensor continuously detects the concentration of CO above the alarm level, the sound emission unit 30 receives an alarm signal from the calculation means, and generates an alarm by sound. It emits.

  In the present embodiment, the piezoelectric vibrating plate 31 is disposed in the sound emitting unit 30, and the piezoelectric vibrating plate 31 is vibrated to generate a sound, and the sound is notified as an alarm through the opening 11 formed in the housing 10 The case of emitting to The piezoelectric vibration plate 31 may be a known piezoelectric vibration plate, provided that a piezoelectric element (for example, a piezoelectric ceramic thin plate) polarized in the thickness direction is bonded to a metal plate and the flexural vibration of the vibration plate is the sound source. It can be used. The piezoelectric element shrinks when a voltage in the same direction as the polarization direction is applied, and expands when a voltage in the opposite direction is applied. A metal plate fixed when the expansion / contraction change of the piezoelectric element is transmitted to the metal plate is Causes deflection and generates sound waves.

  The piezoelectric diaphragm 31 of the present embodiment is a circular thin film, and the peripheral edge thereof is attached to a circular support portion formed on the back surface of the housing 10 with an adhesive, and portions other than the peripheral edge are vibratable. It is set up.

(Sound release part lid member)
The sound output portion cover member 40 is attached to the housing 10 so as to cover the opening 11 and has a slit portion 41 which releases the sound from the sound output portion 30.

  In the present embodiment, the six slit portions of circular arc shape are arranged in a circular shape in the present embodiment, but the shape, arrangement mode, and number of the slits are not limited to this mode. . The slit unit 41 emits the alarm sound emitted from the opening 11 to the outside.

  In the present embodiment, six circular arc-shaped slits are arranged in a circular shape, and they are arranged such that the opening 11 is located at the center of the circle. In this configuration, since the slits can be disposed equidistantly to the opening 11, the sounds (volumes) emitted from the slits can be equalized.

  The sound output portion cover member 40 is mounted so as to form a space with the housing 10. When the sound emitted from the sound emitting unit 30 reaches the space via the opening 11, the space may be configured to resonate. In the present embodiment, a circular projection 45 is formed on the back surface of the sound output portion lid member 40, and a circular projection 16 not facing the projection 45 is formed on the surface of the housing 10 in the sound output portion 30, , 45 define the shape of the space. When the space has such a shape, the sound emitted from the sound emitting unit 30 resonates in the space, and the volume and the sound quality can be changed. Therefore, by changing the shapes of the protrusions 16 and 45 variously, sounds of various volume can be emitted.

  Moreover, you may install a sound pressure adjustment member in the periphery (space facing the slit part 41) of the space prescribed | regulated, for example by protrusion 16 and 45 among the said space. By providing the sound pressure adjusting member, the peripheral space is filled, so that the sound pressure can be changed. Thus, since the space which provides a sound pressure adjustment member is formed, according to the demand of the field where alarm X is used, control of sound pressure is attained. It will not be limited if it is a member which fits into the space of the above-mentioned perimeter and can change sound pressure as a sound pressure adjustment member, for example, a washer-like rubber plate can be used. Further, the sound quality and the sound volume can be similarly changed by attaching a seal member to the slit portion 41.

  A plurality of these projections 16 and 45 can be provided, and in the present embodiment, the circular projections 16 are configured to be triple circular. Since the circular protrusion 16 is formed around the opening 11, it is possible to prevent water, dust and the like entering through the slit 41 from entering the inside of the housing 10 from the opening 11.

  In the lower part of the sound emitting portion cover member 40 when the alarm X is installed, a water draining hole 42 for removing water accumulated in the sound emitting portion 30 is formed.

  Further, the sound output portion cover member 40 includes the insertion protrusion 43 which is slid to be engaged with the housing 10 and the fitting claw portion 44 which is fitted to the housing 10.

  The insertion projection 43 is formed to project on the same plane as the base 40 a from the peripheral edge of the base 40 a of the circular sound emitting portion lid member 40, and is slid toward the recess 14 provided in the housing 10. As a result, the insertion protrusion 43 and the recess are fitted. The fitting claw portion 44 is formed so as to protrude substantially perpendicularly to the base 40 a from the inner surface of the sound emitting portion lid member 40, and is fitted so as to be fitted to the engaging portion provided in the housing 10 Do. The insertion protrusions 43 and the fitting claws 44 in the present embodiment are disposed on the diameter of the circular sound emitting portion lid member 40.

(Calculation means)
The calculation means includes a concentration calculation unit (not shown) that calculates the CO concentration based on the output of the above-described CO sensor 21 detecting carbon monoxide gas. Furthermore, when the CO sensor 21 continuously detects the CO concentration equal to or higher than the alarm level, the calculation means sends an alarm signal to the sound output unit 30, and controls the sound output unit 30 to issue an alarm.
In the alarm device X of the present invention, a display unit 70 for displaying the result of the calculation means is provided in the housing 10 so as to be able to display the CO concentration and the like.

(Battery holder)
The battery storage unit 60 stores a dry cell 61 which is a drive power supply of the alarm device X. The battery storage portion 60 is a cylindrical storage space for storing the cylindrical dry cell 61. The dry battery 61 is slid and stored in the battery housing portion 60, and the battery housing portion 60 is closed by the battery housing lid member 62 in this state. The battery housing cover member 62 of the present embodiment is provided with a grip portion 62a and a mounting groove 62b having projections and recesses around the periphery, and by rotating the battery housing cover member 62 by gripping the grip portion 62a, The battery holder 60 is mounted. That is, in the present configuration, it is not necessary to open the housing 10 and to put the dry battery 61 in and out, so battery replacement can be easily performed.

  INDUSTRIAL APPLICABILITY The present invention can be used for an alarm including a detection unit including a sensor that detects a change in the external environment, and a sound output unit that warns by sound through an opening formed in a housing.

X alarm device 10 case 11 opening 20 detection unit 21 sensor 22 sensor cover 22 d asperity grip unit 25 seal ring 30 sound emitting unit

Claims (2)

An alarm provided with a detection unit provided with a sensor that detects a change in the external environment,
The detection unit is not covered with the sensor, provided with a rotary steerable device cover,
The sensor cover is a first operation unit that can be operated regardless of the displacement position of the sensor cover when the sensor cover is rotated.
And a second operation unit operable by a displacement position of the sensor cover when the sensor cover is rotated . The first operation portion is composed of a pair of members, and is disposed at positions facing each other on the diameter of the sensor cover,
The alarm according to claim 1, wherein the second operation portion is formed of a pair of members and disposed at positions facing each other on the diameter of the sensor cover .

Images