JP3571413B2 - Ventilation pipe storage case and ventilation device - Google Patents

Description

[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a ventilator for ventilating toxic gases such as oxygen-deficient air and hydrogen sulfide stagnating in an underground workplace such as a telecommunication manhole or a sewer, and a ventilation pipe storage case thereof.
[0002]
[Prior art]
As a blower used for ventilation of a manhole, a blower / intake combined use machine and a blower-only machine are known at present. The blower / intake unit 2 is shown in FIG. 6 and includes a blower main body 300a, a blower tube 200a, and a blower tube fixing jig 301a. The blower-only machine 3 is shown in FIG. It has a box shape, and has a storage portion 100b of the blower tube 200b integrated with the blower main body 300b, and is provided with a blower tube jump-out prevention belt 101b.
[0003]
By the way, since the above-mentioned conventional blower 3 is provided with the blower tube housing 100b, there is no deformation or damage of the blower tube 200a during storage or the like, and the blower tube 200a can be easily arranged and stored. It has the advantage of being convenient for storage and storage, but because it is exclusively for ventilation, it will send the foul odor of the exhaust gas from the passing vehicle and the portable generator for the blower and the air mixed with the dust on the ground into the manhole. However, a comfortable working environment cannot be created even if only ventilation is provided.
[0004]
On the other hand, the above-mentioned conventional blower / air intake unit 2 has an advantage that the ventilation pipe 200b can be reconnected, so that the ventilation method can be selectively used, such as blowing or sucking. A tool is necessary to remove the fixing jig, a long time is required to reconnect the blower main body 300b in the direction from the air supply to the air intake, or vice versa, and the blower tube 200b is long. In addition, it is inconvenient to store or take out in a storage bag, and since it is often transported with the blower tube exposed, the entire device is severely deformed or damaged.
[0005]
[Problems to be solved by the invention]
In addition, the length of the blower tube is adjusted according to the depth of the manhole, but if the area around the manhole is wide enough to not interfere with traffic, simply adjust the blower body back and forth from the manhole opening. It is not necessary to provide an adjustment mechanism.
[0006]
However, in practice, there are many manholes in which only a small area can be secured as a work place in order not to hinder the traffic of vehicles and pedestrians, and therefore, the position of the blower cannot be shifted back and forth. In this case, to adjust the feeding length of the blower tube, tie the hanging metal fitting attached to the tip or middle of the blower tube with the handle or protrusion of the blower body with a string, and adjust the feeding length of the blower tube. The current situation is to adjust.
[0007]
That is, when the conventional air blower 3 is used, there is a problem that air cannot be sucked, and there is a problem that exhaust gas and dust are directly sent to the manhole to create an uncomfortable working environment. In this case, although the problem in the blower dedicated machine 3 can be solved, there is a problem that the work of connecting the blower pipes takes a long time.
[0008]
In addition, the operation for adjusting the length of the blow-out tube is common to the conventional air blower 3 and the air blower / suctioner 2, and it is difficult to arrange long objects such as the blower tube. There is a problem that it is inconvenient to carry and store.
[0009]
A first object of the present invention is to provide a ventilation pipe storage case and a ventilation device that are easy to arrange ventilation pipes and are convenient to carry and store.
[0010]
A second object of the present invention is to provide a ventilation pipe storage case and a ventilation device in which the operation of adjusting the air pipe feeding length is easy.
[0011]
A third object of the present invention is to provide a ventilator that can perform both air blowing and air intake and that can reduce the time required to change the connection of the air duct between the air blowing and the air intake.
[0012]
[Means for Solving the Problems]
According to the present invention, the first half-cylinder case is rotatably locked by the first locking means to one side surface of the first half-cylinder case and one side surface of the second half-cylinder case. And the other side surface of the second semi-cylindrical case is openably and closably locked by the second locking means, and a ventilation pipe connected to one end of the first half-cylindrical case and the blower And the other end of the first half-cylindrical case and the other end of the second half-cylindrical case are locked by a ventilation pipe. A pipe stopper is provided.
[0013]
[Action]
According to the present invention, the first half-cylinder case is rotatably locked by the first locking means to one side surface of the first half-cylinder case and one side surface of the second half-cylinder case. And the other side surface of the second semi-cylindrical case is openably and closably locked by the second locking means, and a ventilation pipe connected to one end of the first half-cylindrical case and the blower And the other end of the first half-cylindrical case and the other end of the second half-cylindrical case are locked by a ventilation pipe. The provision of the pipe stopper makes it easy to organize the ventilation pipes and is convenient for carrying and storing.
[0014]
【Example】
FIG. 1 is a diagram showing a use state of a ventilation device 1 according to one embodiment of the present invention.
[0015]
The ventilation device 1 includes a bellows-shaped ventilation pipe 200, a ventilation pipe storage case 100 that stores the ventilation pipe 200, a blower main body 300, and a portable generator 400.
[0016]
FIG. 2 is an explanatory view of the ventilation pipe storage case 100 of the above embodiment, and FIG. 2 (1) is a perspective view showing a relationship between the ventilation pipe storage case 100 and the ventilation pipe 200, and FIG. FIG. 2 is a vertical cross-sectional view showing a state in which the ventilation pipe storage case 100 is closed and the ventilation pipe 200 is omitted, and is a vertical cross-sectional view as viewed from the position of line AA ′ in FIG.
[0017]
The ventilation pipe storage case 100 includes a lower half-cylindrical case 10, an upper half-cylindrical case 20, one side surface 11 of the lower half-cylindrical case 10, and one of the upper half-cylindrical case 20. A hinge 30 for rotatably locking the side surface 21 and an opening / closing lock for opening and closing the other side surface 12 of the lower semi-cylindrical case 10 and the other side surface 22 of the upper semi-cylindrical case 20. 40, and a ventilation pipe fixing part 50 for fixing one end 13-1 of the lower semi-cylindrical case 10 and one end 201 of the ventilation pipe 200 are provided. And is fixed to one end 13-1 of the lower semi-cylindrical case 10 by a screw or welding.
[0018]
The other end 13-2 of the lower semi-cylindrical case 10 is provided with a ventilation pipe stopper 71 for locking the ventilation pipe 200, and the other end 14-2 of the upper semi-cylindrical case 20 is provided at the other end 14-2. , A ventilation pipe stopper 72 for locking the ventilation pipe 200 is provided.
[0019]
FIG. 3 is a longitudinal sectional view showing a relationship between the ventilation pipe storage case 100 and the blower main body 300 in the above embodiment.
[0020]
A packing P1 is provided circumferentially on the inner surface of one end 13-1 of the lower semi-cylindrical case 10, and a packing is provided circumferentially on the inner surface of one end 14-1 of the upper semi-cylindrical case 20. P2 is provided, a donut plate-shaped packing P3 is provided on the ventilation pipe fixing portion 50, the protrusion 302 of the blower 300 is sandwiched between the packing P1 and the packing P3, and the cases 10 and 20 are closed. Is sandwiched between the packing P2 and the packing P3. That is, the circumferential groove 61 is formed by the packing P1 and the packing P3, and the circumferential groove 62 is formed by the packing P2 and the packing P3 when the cases 10 and 20 are closed. Are fitted with these groove portions 61 and 62. The grooves 61 and 62 constitute the attaching / detaching portion 60.
[0021]
In the blower 300, a protrusion 303 similar to the protrusion 302 is provided on the side opposite to the protrusion 302. Therefore, by changing the mounting direction of the blower 300 to the ventilation pipe storage case 100, the ventilator 1 can be set to the exhaust type ventilation and also to the intake type ventilation.
[0022]
FIG. 4 is an explanatory diagram of the ventilation pipe stopper portions 71 and 72 in the above embodiment.
[0023]
The ventilation pipe 200 has a bellows structure, and each of the stopper portions 71 and 72 is formed by dividing a disk having a hollow portion substantially equal to the diameter of the constriction portion of the bellows of the ventilation pipe 200 into two in the diameter direction. The outer peripheral edge of the first disk is fixed to the inner surface of the other end portion 13-2 of the lower semi-cylindrical case 10, and the outer peripheral edge of the second disk is Is fixed to the inner surface of the other end 14-2 of the upper semi-cylindrical case 20. Further, the ends of the stopper portions 71 and 72 are tapered, and the angle is, for example, about 30 degrees.
[0024]
Next, the operation when the above embodiment is used will be described.
[0025]
First, to attach the ventilation pipe 200 to the storage case 100, the lock 40 is removed, the upper semi-cylindrical case 20 is opened, and the lower semi-cylindrical case 10 is fixed to one end 13-1 of the lower semi-cylindrical case 10. 3, one end 201 of the ventilation pipe 200 may be fitted to the right end in FIG. 3 and the one end 201 may be fixed by a fixing band 202.
[0026]
Thereafter, in order to attach the blower main body 300 to the storage case 100, the blower main body 300 is provided at one end 13-1 of the lower semi-cylindrical case 10 with the upper semi-cylindrical case 20 opened. The protrusion 302 of the blower main body 300 is fitted into the groove 61, and the upper semicylindrical case 20 is closed. At this time, the groove 62 of the one end 14-1 of the upper semicylindrical case 20 and the blower main body The upper semi-cylindrical case 20 is closed and the lock 40 is locked while fitting the projections 302 of the 300. Thereby, as shown in FIG. 3, blower main body 300 is fixed to storage case 100, and blower main body 300 is further connected to ventilation pipe 200 fixed to ventilation pipe fixing section 50.
[0027]
In this case, the protrusions 302 of the blower main body 300 are sandwiched by packings P1, P2, and P3 such as rubber and sponge provided on the inner surfaces of the one end portions 13-1 and 14-1 of the storage case 100. The adhesion of this portion is further increased, and the feet 15 with vibration-proof rubber are attached, so that rattling due to vibration during ventilation is prevented. Thus, the storage case 100 can be freely attached to and detached from the blower main body 300 by the lock 40 and the grooves 61 and 62.
[0028]
After the ventilation pipe 200 is attached to the storage case 100, before the upper semi-cylindrical case 20 is closed, the amount of the ventilation pipe 200 to be extended is set to a desired length, and the portion longer than the extended amount is stored. It is stored in the case 100. When the upper semi-cylindrical case 20 is closed in this state, the stoppers 71 and 72 sandwich the constricted portion of the ventilation pipe 200, so that the amount of the ventilation pipe 200 extended is fixed. That is, as shown in FIG. 4, even if the ventilation pipe 200 is pulled in the longitudinal direction, the ventilation pipe ring 200 </ b> R hits the upper and lower stopper portions 71, 72, so that the ventilation pipe 200 is not extended any more. The feeding length is fixed.
[0029]
As described above, in the state where the blower main body 300 and the ventilation pipe 200 are attached to the storage case 100 and the ventilation pipe 200 extended from the storage case 100 is inserted through the manhole M into the portable generator, The fan body 300 is operated by the electricity supplied from the power supply 400 through the power cord C, and fresh air is blown through the ventilation pipe 200 inserted into the manhole, or the contaminated air is sucked, discharged outside, and ventilated.
[0030]
Then, after using the ventilation device, the upper half-cylindrical case 20 is opened, and the entirety of the ventilation pipe 200 is stored in the storage case 100 while the ventilation pipe 200 is folded, and the upper half-cylindrical case 20 is closed. The lock 40 is closed. As described above, when the upper half-cylindrical case 20 is closed, a force is exerted on the ventilation pipe 200 to extend in the longitudinal direction. However, the temporarily stored ventilation pipe 200 is caught by the ring 200R on the stopper portions 71 and 72. That is, the protrusions of the ventilation pipe 200 are prevented by the stopper portions 71 and 72, and the ventilation pipe 200 can be prevented from protruding at the time of storage without using a protrusion prevention belt or the like. Therefore, if the upper semi-cylindrical case 20 is closed after the storage is completed, the ventilation pipe 200 does not protrude from the front end of the storage case 100 and the portability is improved.
[0031]
When the ventilation device is used, when the ventilation tube 200 is sandwiched, a notch 73 cut out at about 30 degrees is formed at a contact portion between the upper and lower stopper portions 71 and 72 so as not to damage the cloth of the ventilation tube 200. The upper stopper 72 is provided.
[0032]
FIG. 5 is an exploded perspective view showing the structure of a filter cover and a power cord housing required for attaching and detaching the air filter in the above embodiment.
[0033]
The air filter 305 is provided in the air suction port of the blower main body 300 when ventilating by blowing air, is fitted into the filter cover 306, and is attached to the air suction port. As a result, the air filter 305 is sandwiched between the filter cover 306 and the fan guide 304. The filter cover 306 used here has a mesh shape so that air can be easily sucked in, and elastic corrugated plate-like claws 307 which fit into the projections of the air suction port at positions obtained by dividing the surrounding frame into three equal parts. And has a structure that can be freely attached and detached. Further, there are many types of air filters 305 to be used, such as odor and dust absorption capacity, dry type and wet type, and are appropriately selected according to the application and use conditions.
[0034]
The power cord storage section 308 is a box-shaped one provided at the lower portion of the blower main body 300, and incorporates a power cord of an electric vacuum cleaner or a mechanism equivalent to an automatic winding mechanism of a safety belt of an automobile. Organization and storage are easy. When the power cord C is stored, a rubber or plastic packing 309 is attached to the outlet in order to prevent intrusion of mud, sand or the like adhering to the power cord C into the storage section.
[0035]
Next, a description will be given of working steps in the case where the above embodiment is used, taking a telecommunication manhole as an example.
[0036]
When laying a communication cable or performing maintenance work in a telecommunication manhole, in order to prevent personal injury due to oxygen deficiency or harmful gas, use the blower main body 300 of the ventilator 1 to blow or inhale air before entering the manhole. Ventilation is performed, and it is confirmed that the oxygen concentration measured by the harmful gas detector is 18% or more, and the operation is started. If there is a possibility that oxygen-deficient air or harmful gas may flow in from the adjacent manhole through the cable housing pipe, continue ventilation even during installation and maintenance work.
[0037]
In the above embodiment, the ventilation pipe 200 is divided so that it can be opened and closed in the direction perpendicular to the longitudinal direction of the cylinder, and one end 201 of the ventilation pipe 200 is fixed so that the ventilation pipe 200 can be stored. Without detaching, the attachment / detachment operation of the storage case 100 and the air discharge port or the air suction port of the blower main body 300 is simplified, and ventilation can be performed by either air blowing or air intake. It is easy to handle the ventilation pipe 200 for adjustment and the like.
[0038]
The above embodiment can be applied to the conventional blower 3 shown in FIG.
[0039]
Regarding the method of attaching and detaching the storage case 100 and the blower main body 300, in addition to the combination of the grooves 61 and 62 and the protrusions 302 or 303, a fixing pin may be used. Further, when the air filter 305 is attached to the blower main body, a claw 307 provided on the filter cover 306 may be engaged with the projection 303 of the blower main body. The storage case 100 and the filter cover 306 may be made of a material such as plastic, light alloy, or the like, which is lightweight and has excellent durability and impact resistance.
[0040]
Further, instead of the lower semi-cylindrical case 10 and the upper semi-cylindrical case 20, a semi-cylindrical case other than the semi-cylindrical case, such as a square cylindrical shape, may be used. . The lower half-cylindrical case 10 and the upper half-cylindrical case 20 are examples of a first half-cylindrical case and a second half-cylindrical case, respectively. The hinge 30 is an example of first locking means for rotatably locking one side surface of the first half cylindrical case and one side surface of the second half cylindrical case. Reference numeral 40 denotes an example of a second locking means for locking the other side surface of the first half-cylinder case and the other side surface of the second half-cylinder case so as to be freely opened and closed. The ventilation pipe fixing part 50 is an example of ventilation pipe fixing means for fixing one end of the first half-cylindrical case and one end of the ventilation pipe connected to the blower. It is an example of a ventilation pipe stopper provided at at least one of the other end of the first semicircular case and the other end of the second semi-cylindrical case to lock the ventilation pipe.
[0041]
In the above embodiment, the other end 13-2 of the first semi-cylindrical case 10 and the other end 14-2 of the second semi-cylindrical case 20 are respectively provided with the ventilation pipe stopper 71, Although the ventilation pipe 72 is provided, if at least one of the ventilation pipe stoppers 71 and 72 is provided, the feeding amount of the ventilation pipe 200 is sufficiently fixed and stored. In this case, if the ventilation pipe stopper is provided only at the other end 14-2 of the second semi-cylindrical case 20, that is, if only the ventilation pipe stopper 72 is provided, the upper semi-cylindrical case 20 is When opened, the ventilation tube 200 can be easily taken out and stored.
[0042]
In the above embodiment, by making the air filter 305 and the like detachable, the air filter 305 can be attached to one side of the blower main body 300. Also, for example, when a large manhole or a bad odor is severe. If two ventilators are installed and one is operated as an exhaust type and the other as an intake type, efficient and quick ventilation is possible.
[0043]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that operation which adjusts a ventilation pipe payout length and arrangement of ventilation pipes are easy, and it is convenient for carrying and storage.
[0044]
Further, according to the inventions described in claims 5 to 8, in addition to the above-mentioned effects, it is possible to perform both air blowing and air intake, and furthermore, it is possible to shorten the time required to change the connection of the air duct between the air blowing and the air intake. It works.
[Brief description of the drawings]
FIG. 1 is a diagram showing a use state of a ventilation device 1 according to one embodiment of the present invention.
FIG. 2 is an explanatory view of a ventilation pipe storage case 100 of the embodiment.
FIG. 3 is a vertical sectional view showing a relationship between a ventilation pipe storage case 100 and a blower main body 300 in the embodiment.
FIG. 4 is an explanatory diagram of ventilation pipe stoppers 71 and 72 in the above embodiment.
FIG. 5 is an exploded perspective view showing a structure of a filter cover and a power cord accommodating portion required for attaching and detaching an air filter in the embodiment.
FIG. 6 is a view showing a conventional air blower / intake machine 2;
FIG. 7 is a view showing a conventional air blower 3;
[Explanation of symbols]
1 ... ventilator,
100 ... ventilation tube storage case,
10 ... lower half-cylindrical case,
20 ... the upper semi-cylindrical case,
11, 21 ... one side,
12, 22 ... the other side,
13-1, 14-1 ... one end,
13-2, 14-2 ... the other end,
30 hinge as first locking means,
40 ... an opening / closing lock as a second locking means,
50 ... Ventilation pipe fixing part,
61, 62 ... groove,
71, 72 ... ventilator stopper,
73 ... notch,
200 ... ventilation pipe,
200R… Ventilation pipe ring,
300 ... Blower body,
302, 303 ... protrusions,
P1 packing as a first convex portion,
P2: packing as a second convex portion,
P3… Packing,
C: Power cord.

Claims (8)

A first semi-cylindrical case;
A second semi-cylindrical case;
First locking means for rotatably locking one side surface of the first half cylindrical case and one side surface of the second half cylindrical case;
Second locking means for locking the other side surface of the first half-cylinder case and the other side surface of the second half-cylinder case in an openable and closable manner;
Ventilation pipe fixing means for fixing one end of the first half-cylindrical case and one end of a ventilation pipe connected to the blower;
A ventilation pipe stopper provided at at least one of the other end of the first half-cylinder case and the other end of the second half-cylinder case to lock the ventilation pipe;
The ventilation pipe storage case characterized by having. In claim 1,
The ventilating pipe has a bellows structure, and the ventilating pipe stopper is obtained by dividing a circular plate having a hollow portion substantially equal to the diameter of the constriction of the bellows of the ventilating pipe into two parts in a diameter direction. Wherein the outer peripheral edge of each disk is fixed to the inner surface of the other end of the first half-cylindrical case and the inner surface of the other end of the second half-cylindrical case. Ventilation pipe storage case. In claim 1 or claim 2,
The ventilation pipe storage case, wherein the ventilation pipe stopper is provided only at the other end of the first half-cylindrical case. A first half-cylinder case, a second half-cylinder case, and one side of the first half-cylinder case and one side of the second half-cylinder case are rotatably locked. First locking means, and second locking means for opening and closing the other side surface of the first half-cylinder case and the other side surface of the second half-cylinder case, A ventilation pipe storage case having a plate-shaped ventilation pipe fixing part for fixing one end of the first half-cylindrical case and one end of a ventilation pipe connected to the blower;
A first projection provided circumferentially on an inner surface of one end of the first semi-cylindrical case;
A second convex portion provided in the circumferential direction on the inner surface of one end of the second semi-cylindrical case;
A blower body having a projection;
And the projection of the blower is fitted and sandwiched in a first groove formed by the first projection and the ventilation pipe fixing part, and the second projection and the ventilation pipe are fixed. A ventilation device characterized in that a projection of the blower main body is fitted and held in a second groove formed by a fixing portion. In claim 4,
The ventilation is characterized in that the protrusions are provided at both ends of the blower main body, and can be set to exhaust ventilation or intake ventilation by changing a mounting direction of the blower main body to the ventilation pipe storage case. apparatus. In claim 4 or claim 5,
The ventilation pipe storage case has a ventilation pipe stopper for locking the ventilation pipe at the other end of the first half-cylinder case and the other end of the second half-cylinder case. And ventilation equipment. In claim 6,
The ventilating pipe has a bellows structure, and the ventilating pipe stopper is obtained by dividing a circular plate having a hollow portion substantially equal to the diameter of the constriction of the bellows of the ventilating pipe into two parts in a diameter direction. Wherein the outer peripheral edge of each disk is fixed to the inner surface of the other end of the first half-cylindrical case and the inner surface of the other end of the second half-cylindrical case. Ventilation equipment. In claim 6 or claim 7,
The ventilation device according to claim 1, wherein the ventilation pipe stopper is provided only at the other end of the first half-cylindrical case.

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