JP3601682B2 - Portable gas measuring device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable gas measurement device that measures the concentration of environmental gas in a region distant from a main device and enables alarming in a measurement region.
[0002]
[Prior art]
When working in narrow places such as manholes, the main body of the gas measurement device, the sampling hose, and the alarm unit are housed in a hard case as a kit to quickly detect the generation of harmful gas and evacuate workers. Is installed on the ground, and the sampling unit and the alarm unit are pulled into the site via hoses and cables, so that a portable gas detection device that can reliably detect the concentration of harmful gas at the site is used. .
[0003]
[Problems to be solved by the invention]
However, since these hoses and cables are used as thin as possible in consideration of the convenience of routing, there is a problem that when they are stored in a case, they are stored in a bent state and are easily damaged. In order to solve such a problem, it is conceivable to store each of them on a reel that is wound by operating a handle. However, if it is configured to be small enough to be stored in a case, there is a problem that operability is reduced.
The present invention has been made in view of such a problem, and an object of the present invention is to provide a portable gas measuring device in which hoses and cables are easily handled.
[0004]
[Means for Solving the Problems]
In order to solve such a problem, in the present invention, a measuring device main body having a sampling function is embedded and fixed in a case which is joined by a hinge and is divided into two, and a sampling unit, an alarm unit, and a sampling unit are provided. The cord reel that winds the hose to be connected by the spring energy and the cord reel that winds the cable of the alarm unit by the spring energy are united in a detachable manner and are housed in a removable manner.
[0005]
[Action]
If the spring accumulating force is released, the hose and cable can be wound up without the need for operation such as turning of the handle, and the two cord reels are united, so that they can be easily tied up Can be stored in the case.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Therefore, the details of the present invention will be described below based on the illustrated embodiment.
FIGS. 1 and 2 each show an embodiment of the portable gas detection device of the present invention in a state in which a lid of a case is opened. The case 1 is lightweight by blow molding and has a cushioning property. It is composed of a case main body 2 which is excellent in shape and almost symmetrical with respect to the opening surface, and a case lid 3 which can be opened and closed by a hinge. In addition to a built-in power supply reel 6 from which the battery 5 can be pulled out, a measuring device main body 8 containing a backup battery 7 is embedded and fixed with screws 9.
[0007]
The main body of the measuring device generally includes a sampling pump for sucking outside air, a sensor for detecting a specific gas in the sampled air, a signal from the sensor being processed and output to the display panel 18, and a gas concentration alarm. And a signal processing circuit that outputs an alarm signal when the level exceeds the level.
[0008]
The case body 2 has a pair of cord reels 11 and 12 accommodating portions 13 which are separated by a partition 10 on the other side of the measuring device body 8 and can be united as shown in FIG. The accommodation unit 15 of the alarm unit 14 is formed.
[0009]
A concave portion 2b through which the hose 16 and the cable 17 can be pulled out is formed in a wall 2a on the cord reel side of the case main body 2, a projecting portion 3a covering the concave portion 2b is formed on the lid 3, and a display panel of the measuring device main body 4 is formed. A window 19 through which the outside 18 can be visually recognized is formed.
[0010]
The end of the hose 16 wound around the cord reels 11 and 12 is connected to the connector 20 of the cord reel 11, the hose 21 is connected to the gas inlet 22 of the measuring apparatus main body 4, and the end of the cable 17 is connected to the connector 23. It is connected to a connector 25 of the measuring device main body 4 via a cable 24. Reference numeral 27 in the figure denotes a sampling unit connected to the tip of the hose 16, and reference numeral 28 denotes a lid of the battery housing.
[0011]
FIGS. 3 and 4 show an embodiment of the above-mentioned cord reel, which includes a spiral spring (not shown) which is urged by drawing out a hose 16 and a cable 17 like a normal cord reel. A hose outlet 32 and a cable outlet 33 are provided on the surface on the side of the concave portion 2b when housed in the case body 2, and the upper portion thereof is urged at the time of extraction. Winding buttons 34 and 35 for releasing the biasing force of the spring, and handles 36 and 37 are provided.
[0012]
On the other hand, when united, a plurality of, in this embodiment, three grooves 40, 40, 40 extending in the circumferential direction are formed on one surface 38 of the opposing surfaces 38, 39, and on the other surface 39, Claws 41, 41, 41 that fit into the grooves 40, 40, 40 and engage with the grooves 40, 40, 40 when rotated in the circumferential direction are formed. The hose reel 11 housed in the measuring device main body arranged at the end has a concave portion 30a formed near the handle, so that the connector of the cord reel 12 can be assembled even as shown in FIG. 23 is configured to be exposed without being blocked by the reel 11.
[0013]
In this embodiment, the combined reels 11 and 12 are taken out of the case body 2, the hose 16 and the cable 17 are pulled out, the sampling unit 27 and the alarm unit 14 are pulled out and set at predetermined positions, and the reels 11 and 12 are again mounted. It is stored in the housing 13 of the case body 2.
[0014]
When the hose 16 and the cable 17 are dropped into the concave portion 2b of the case main body 2 and the lid 3 is closed, as shown in FIG. In this state, it is possible to prevent rainwater from entering as much as possible. Further, since the winding buttons 34 and 35 of the reel 11 are not exposed, it is possible to prevent the winding buttons 34 and 35 from being operated and hinder measurement. it can. Thus, even when the lid 3 is closed, the display panel 18 of the measuring device main body 8 can be seen through the window 19.
[0015]
When handling is inconvenient in the united state, when the respective reels 11 and 12 are rotated as shown by arrows A and B in FIG. 3, the claws 41 are separated from the grooves 40 and can be separated. When the separated parts are combined, the claws 41 are shifted to the positions where the claws 41 enter the grooves 40 and are engaged with each other. It is cut into 40 and fixed.
[0016]
In this state, when the plug 5 is pulled out from the opening 4 of the case 1 and connected to a commercial power socket to supply commercial power to operate the measuring device main body 8, air in the environment to be measured passes through the hose 16. The measured value is displayed on the display panel 18. The display contents of the display panel 18 can be viewed from the outside through the window 19.
[0017]
Then, when the concentration of the monitored gas exceeds the alarm level, an alarm signal is output from the measuring device main body 8. This alarm signal is transmitted to the alarm unit 14 distant from the measuring device main body 8 by the cable 17 and issues an alarm at the site.
[0018]
When the lid 3 is opened and the winding buttons 34 and 35 of the reels 11 and 12 are pressed at the stage where the measuring operation is accommodated in this way, the torque of each spring is released, and the hose 16 and the cable 17 are wound. Can be When the alarm unit 14 is accommodated in the concave portion 15 and the sampling unit 27 is accommodated between the measuring apparatus main body and the reel 11 and the lid 3 is closed as shown in FIG. Can be carried around.
[0019]
【The invention's effect】
As described above, in the present invention, a measuring device main body having a sampling function is embedded and fixed in a case that is joined by a hinge and divided into two parts, and a sampling unit, an alarm unit, and a hose connected to the sampling unit are connected. Since the cord reel wound by the spring energy and the cable of the alarm unit are detachably housed together with the cord reel wound by the spring energy in a detachable state, if the spring energy is released, The hose and cable drawn out for measurement can be wound up without the need for operations such as turning the handle, and the two cord reels are combined, so that the case can be easily tidy and organized. Can be stored in
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a portable gas measuring device according to the present invention with a lid opened.
FIG. 2 is a top view of a case main body of the same device.
FIG. 3 is a diagram showing a state in which code reels incorporated in the above device are united.
FIGS. 4A and 4B are diagrams showing the structure of the joining surface of the reel, respectively.
FIG. 5 is a diagram showing one use state of the above device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Case main body 2a Wall 2b Depression 3a Projection 8 Measurement device main body 9 Screw 10 Partition 11, 12 Cord reel 13 Housing 14 Alarm unit 15 Housing 16 Hose 17 Cable 18 Display panel 19 Window 27 Sampling units 30, 31 Housing 32, 33 Pull-out ports 34, 35 Rewind buttons 36, 37 Handle 40 Groove 41 Claw

Claims (4)

A measuring device body having a sampling function is embedded and fixed in a case that is joined by a hinge and divided into two, and a sampling unit, an alarm unit, a code reel that winds a hose connected to the sampling unit by a spring energy, and A portable gas measuring device in which a cord reel for winding the cable of the alarm unit by a spring accumulating force is united in a detachable manner and housed in a removable manner. The portable gas measuring device according to claim 1, wherein the case is formed as a carrying case by blow molding. 2. The portable gas measuring device according to claim 1, wherein a concave portion for drawing out the hose and the cable is formed on one side of the case, and a projecting portion facing the concave portion is formed on the other side of the case. A plurality of grooves extending in the circumferential direction, or a claw that fits into the groove and engages with the groove when rotated in the circumferential direction is formed on a surface of the housing constituting each of the code reels when the housing is united. The portable gas measuring device according to claim 1, wherein the gas measuring device is formed.

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