JPS609617B2 - Vacuuming drain pipes, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner for cleaning clogged drain pipes and the like.

The vacuum cleaner for drain pipes, etc. of the present invention is a further improvement of the invention for which the present applicant applied for a patent on June 17, 1975, and which was published as Japanese Patent Application Laid-open No. 154262/1983.

In other words, a rotatable shaft with a cleaning tool such as a wire brush or scraper attached to the tip can be easily and easily extended or retracted from inside the vacuum cleaner body. A feed-in/outlet port of a rotary drum that accommodates the movable shaft in a spiral manner so that the movable shaft can be fed out is rotatably connected to a base of a guide tube through which the movable shaft is inserted, and the rotary drum is configured to have a handle or a handle with respect to the guide tube. It is rotated by a motor or other driving device with contact, and the guide tube includes a plurality of overlapping tubes that can extend and contract by sliding on each other in the longitudinal direction, and the guide tube has a proximal end side and a distal end side. A spring is provided between the guide tube and the guide tube, which is biased so that the overlapping tube expands under normal conditions. The invention is characterized in that each of them is provided with a one-way feeding tuft stopper mechanism having a check piece for switching the feeding direction of the shaft.Furthermore, a second invention provides the following structure in addition to the structure of the above-mentioned specific invention. In other words, the feeding direction switching members of the one-way feeding tuft stopper mechanism are connected to each other by a movable connecting member, and the switching can be performed by manually operating only one of the feeding direction switching members. It is characterized in that the members are made to interlock.Examples of the present invention will be described below with reference to the drawings.

In FIGS. 1, 2A, and 2B, 1 is a rotary drum that accommodates a long spirally wound flexible shaft 2, and its delivery/inlet port la is a guide through which the flexible shaft 2 is inserted. It is rotatably connected to the base 3a of the tube 3.A curved tip 3e is fixed to the tip of the guide tube 3 to make it easier to apply it to the mouth P of drain pipes and other objects to be cleaned. The tip of the flexible shaft 2 through which the guide tube 3 is inserted is the tube tip 3.
The required length is fed out from e. Reference numeral 4 denotes a leg made of a rubber material or the like that is fixed to the tube tip 3e, and is used to support the body when it is used in an upright position as shown in Fig.

A wire brush, scraper or other cleaning tool 5 is detachably attached to the tip of the flexible shaft 2 depending on the situation of the drain pipe or the like to be cleaned, and a wire brush or other cleaning tool 5 is detachably attached to the end thereof to prevent it from slipping out of the rotating drum. A retaining piece 2a is removably attached.The guide tube 3 is connected in order from its base end to a tubular base 3a, a connecting short pipe 3b, and then a first polymerization tube via a first tuft retaining mechanism 6, which will be described later. The tube 3c and the second overlapping tube 3d are connected to each other, and further connected to the tube tip 3e via a second tuft stopper mechanism 7, which will be described later.

As shown in FIGS. 2A and 2B, the base 3 of the guide tube 3
A and A are rotatably connected to each other by iron to the inlet and outlet port la of the rotary drum, and are prevented from coming off by a stopper piece 8. On the other hand, a connecting fitting 3f is fixed at the tip of the base 3a, and by supporting the flange 3g of the connecting short pipe 3b and screwing the locking nut 3 onto it, the cylindrical base 3a and the connecting short pipe are connected. 3b is detachably connected to one end. In the figure, the reference numeral 9 designates a rotation preventing protrusion that protrudes from the inner surface of the connecting fitting 3f and extends freely in a notch provided in the short pipe 3b. The end of the short pipe 3b and the first tuft stopper mechanism 6, the first tuft stopper mechanism 6 and the first overlapping tube 3c, the second overlapping tube 3d and the second tuft stopper mechanism 7, and the second tuft stopper mechanism 7 and the tube tip 3e. Between,
Each is fixed by welding or other arbitrary joining means. The plurality of polymer tubes, that is, the first polymer tube 3c and the second polymer tube 3d, are connected so that they can slide and expand and contract with each other in the longitudinal direction.

In this illustrated example, as shown in FIG. 2B, "first polymerization tube 3c
A second overlapping tube 3d having guiding annular protrusions 3i, 3i therein.
``A retaining nut 3i that prevents the annular protrusion 3i from remaining in the first overlapping tube 3c is screwed onto the overlapping tube 3c.'' With this, both overlapping tubes 3c and 3d are mutually aligned in the longitudinal direction. A spring is provided between the proximal end and the distal end of the guide tube 3 configured as described above, which normally biases the plurality of overlapping tubes 3c and 3d to maintain an extended state. Apply 10.

In the illustrated example, the first overlapping tube 3c and the second overlapping tube 3d
Both ends of the compression spring 10 stretched around the first tuft stopper mechanism 6
and the covers 6a and 7a of the second tuft locking mechanism 7, respectively, thereby locking the two overlapping tubes 3c? 3d is urged to expand. In addition, the compression spring Q' whose both ends are locked to the first and second locking mechanisms 6 and 7 also plays the role of preventing rotation of both the overlapping tubes 3c and 3d. Next, details of the tufting mechanism will be explained with reference to FIG. 2B and FIGS. 3 to 7.

Since the first and second detent mechanisms 697 have the same structure, one of them, ie, the second detent mechanism 7, will be mainly explained here. In Fig. 3, 7a is a box-shaped case with a lid plate fixed with bolts and nuts (not shown), and the above-mentioned flexible shafts (not shown) are provided at the front and rear.
An insertion hole 7b is provided for passing through the hole 7b. This case 7a
Inside there are also a pair of check pieces 7c and the check pieces 7.
A feed direction switching member 7d for operating the feed direction switching member 7c and 7c is pivotally mounted. A pair of non-return pieces 7c are swingably attached to shafts 7e and 7e fixed between the lid plate and the bottom plate of the case 7a, and the feeding direction switching piece 7d is attached to a shaft protruding from it. The fixed shafts 7f, 7f are swingably mounted by being supported by a support piece g fixed to the inner surface of the cover plate of the case 7a.The fixed shafts 7f and 7f are attached to the outside through a small hole bored in the support piece 7g and the case cover plate. Protruding feed direction switching member 7d
The knob part can be removed by hand or by using the connecting material 11, which will be described in detail later.
It is operated by swinging. As shown in FIGS. 3, 4, and 5, the pair of non-return pieces 7c, 7c has a substantially parallelogram-shaped front face, and the front and rear sides (the right and left sides in FIGS. 4 and 5) (left side) have special steel blades 7h and 7h that are brazed to each other.

On the other hand, as shown in FIGS. 3, 6, and 7, the tip of the feeding direction switching material 7d has bifurcated elastic material manufacturing pieces 7i, 7i that have a tendency to spread outward. , a pair of non-return pieces 7 housed oppositely on both sides of the case 7a.
The flexible shaft 2 is inserted between the two action pieces 7i, 7i at the rear or in front of the check pieces 7c, 7c by swinging the feed direction switching section 7d forward or backward. mesh with. The movement of the feed direction switching unit 7d is restricted by the action pieces 7i, 7i coming into contact with protrusions 7k, 7k fixed to the front and rear of each check piece 7c. In the state shown in FIG. 3, the feed direction switching member 7d is swung rearward, in other words, the operating pieces 7i, 7i are swung forward of the case 7a, and the check pieces 7c, 7c are closed at the rear part thereof. , shows a state in which it is engaged with a movable shaft 2 (not shown). In the illustrated example, as shown in FIGS. 3 and 5, the opposite check pieces 7c, 7c are provided point-symmetrically at the center of the case. According to this, when the front or rear blades 7h, 7h of both check pieces 7c, 7c intersect with the movable shaft 2, the grasping action of the movable shaft 2 is ensured, and the movable contact When using a helical metal wire with close surfaces as 2 (see Fig. 5), one blade 7h of the parallelogram-shaped check pieces 7c and 7c is used to prevent the tilting of the flexible shaft 2. The gripping action is made even more reliable by meshing along the metal wires. The second tuft stopper mechanism 7 has the above-mentioned configuration, but the first tassel stop mechanism 6, whose explanation is omitted, also has a similar structure, and the parts with the same lowercase letters in both mechanisms 6 and 7 are the same. Show things.

Their functions will be described in detail later, but since the feed direction switching members 6d and 7d in both detent mechanisms 6 and 7 are always swung in the same direction when this machine is used, in the illustrated example, the feed direction switching members 6d and 7d are The members 6d and 7d are connected to each other by a movable connecting member 11, such as an interlocking wire, so that they interlock. As a result, only one of the feeding direction switching materials 6d and 7d can be operated by hand, but if the flexible connecting member 11 is not provided, it is of course possible to operate each one by hand. The intermediate portion of the flexible connecting member 11 has both ends attached to the cases 6, 7a of the first and second detent mechanisms 6, 7 with mounting pieces 6j.
, 7j are inserted through the flexible guide tube 12. To explain how to use the vacuum cleaner with the above configuration, hold the fixed handle 13 fixed to the base 3a of the guide tube 3 with your left hand, and place your right hand on the rotary handle 14 rotatably attached to the rotating drum. Aim 3e at the mouth P to be cleaned.

Next, loosen the anti-slip bolt 15 of the flexible shaft 2 that is screwed into the inlet/outlet portion 2 of the rotary drum and protrudes inside, and then remove the feed direction switching member 6d of the first tuft stopper mechanism 6 as shown in FIGS. 1 and 2.
By tilting forward as shown in Figures A and B, the check pieces 6c, 6c and 7c of the first and second tuft mechanisms 6, 7
7c are closed in front thereof and engaged with the movable shaft 2 as shown in FIG. Here, the upper half of the fuselage is moved by the fixed handle 13 against the elasticity of the compression spring 10 as shown in FIG. 8A.
When pushed down from the state to the state B, the guide tube 3 contracts in the length direction between the first overlapping tube 3c and the second overlapping tube 3d. At this time, the check pieces 6c, 6c of the first tuft stopper mechanism 6 prevent the movable shaft 2 from returning into the rotating drum, and the check pieces 7c, 7c of the second tassel stop mechanism 7 prevent the movable shaft 2 from returning into the rotating drum. Since the flexible shaft 2 is allowed to advance forward, the flexible shaft 2 protrudes from the tube tip 3e by the amount of contraction of the guide tube 3. Next, when the downward pressure on the upper half of the fuselage is released, the repulsive force of the compression spring 10 causes the guide tube 3 to return from the state shown in FIG. 8B to the extended state C. At this time, the check pieces 7c, 7c of the second tuft stopper mechanism 7 prevent the movable shaft 2 from returning into the guide tube 3, and the check pieces 6c, 6c of the first tuft stop mechanism 6 prevent the movable shaft 2 from returning into the guide tube 3. Since the forward movement of the movable shaft 2 is allowed, the movable shaft 2 wound spirally within the rotary drum 2 is pulled out into the guide cylinder 33 by the amount of its extension. Therefore, by repeating the operations shown in FIGS. 8A to 8C, the movable shaft 2 can be intermittently pulled out, and the cleaning tool 5 such as a brush at the tip thereof can be brought to a desired position for cleaning. After that, if necessary, a shoulder rest 17 is slidably inserted into the underframe 16 fixed to the base end of the guide tube 3.
is pulled out to a required length and fixed with a set screw 18, the entire body is appropriately tilted, and the shoulder rest 17 is applied to the shoulder.

This allows the handle 14 to be easily rotated for cleaning. When the rotating drum is rotated, friction is usually generated between the rotating drum and the flexible shaft 2 due to the inner wall of the drum and the helical portion of the flexible shaft 2, which tends to expand outward due to elasticity. However, since the spiral part shown in the figure is drawn schematically and does not represent this state, it remains fixed against rotation, but if there is a strong thread on the drain pipe etc., it may be a rotating drum. Since slippage may occur between the helical portion of the shaft 2 and the helical portion of the shaft 2, in such a case, screw the anti-slip bolt 15 and use its tip to secure the flexible shaft 2 to the inner wall of the delivery inlet portion la that is integrated with the rotating drum 1. Press to fix the space between the rotating drum and the flexible shaft 2. Next, when the rotary drum is rotated with respect to the guide cylinder 3 using the handle 14, the flexible shaft 2 and the cleaning tool 5 at its tip rotate accordingly, allowing cleaning of drain pipes and other small areas to be cleaned. Incidentally, it is of course possible to attach or connect a motor or other drive device to the vacuum cleaner in order to rotate the rotary drum 1.After cleaning, in order to store the pulled-out spindle 2, use a non-slip device as necessary. After loosening the bolt 15 and knocking down the feed direction switching members 6d and 7d of the first and second detent mechanisms 6 and 7 to the rear, that is, to the front, as shown in X, Y, and Z in FIG. As in the operation, the guide cylinder 3 may be expanded or contracted by pressing or releasing it.

At this time, the check pieces 6c of the first and second locking mechanisms 6, 7,
6c, 7c, and 7c are engaged with the closed shaft 2 at the rear thereof as shown in FIG. It is intermittently fed into the guide cylinder 3 and rotating drum. In addition, when storing the illustrated example vacuum cleaner, remove the guide tube 3 by loosening the locking nut 3h shown in FIG. The legs 2 are fixed to the underframe 16.
0 and 20 can be placed on a plane with the straight line i as a reference, and it is designed to be stored compactly.

Furthermore, it can be easily carried by holding the curved portion of the fixed handle 13 with the guide tube 3 inserted into the U-shaped fittings 19, 19. According to the vacuum cleaner for drain pipes, etc. of the present invention described above, not only can the retractable shaft 2 housed in the rotary drum be easily extended or retracted by the telescopic operation of the guide tube 3, but also the During expansion and contraction operations, the load of the entire machine body is not applied to the operator as in conventional vacuum cleaners, and when the guide cylinder 3 is expanded, which requires a pulling force, the elasticity of the spring 10 restores the movement, allowing for light operations. It has the effect of

Furthermore, the switching of the line feed-in of the movable shaft 2 is performed by the first and second
This can be easily done by operating the feed direction switching sections 6d and 7d of the tuft stopper mechanisms 6 and 7, which is extremely convenient.

[Brief explanation of the drawing]

FIG. 1 is a side view of a vacuum cleaner for drain pipes, etc. of the present invention, FIG. Figure 3 is an enlarged perspective view of the one-way feeding tassel stopper mechanism, Figure 4 is an enlarged plan view of the check piece taken out from the tassel stopper mechanism, Figure 5 is an enlarged front view thereof, and Figure 6 is the detent mechanism. 7 is an enlarged side view thereof, FIGS. 8A, B, and C are explanatory diagrams showing the line alignment action of the flexible shaft in the vacuum cleaner of the present invention, and FIG. 9 , Y, and Z are explanatory diagrams showing the retracting action of the flexible shaft in the vacuum cleaner of the present invention. 1... Rotating drum, la... Delivery inlet section,
2...Flexible shaft, 3...Guide tube, 3a...・Base of guide tube "3c, 3d...polymerized tube, 5
...Cleaning tool, 6,7...Detent mechanism, 6c,
7c...'・Return check piece, 6d, 7d...Feed direction switching member, 10...Spring 11...Flexible connecting material. Figure S Figure 2'B) Figure 3 Figure 6 Purple W figure and Figure 6 and Figure 9

Claims (1)

[Scope of Claims] 1. A feed-in/out port 1a of a rotary drum 1 which houses a long flexible shaft 2 having a cleaning tool 5 attached to its tip in a spiral manner so as to be able to be fed out, and a guide tube 3 through which the flexible shaft 2 is inserted. base 3
The rotating drum 1 is rotatably connected to the guide tube 3 along with the flexible shaft 2 by a handle 14 or a motor or other driving device, and the guide tube 3 is rotated in the longitudinal direction. A plurality of overlapping tubes 3c, 3d are provided which can be expanded and contracted by sliding each other, and between the proximal end side and the distal end side of the guide tube 3 are normally biased so that the overlapping tubes 3c, 3d are extended. A spring 10 is provided on the base end side and the distal end side of the guide tube 3, and a reverse spring 10 is provided on the base end side and the distal end side of the guide tube 3, and is engaged with the flexible shaft 2, and the feeding direction of the flexible shaft 2 is switched by the feeding direction switching members 6d and 7d. A vacuum cleaner for drain pipes, etc., characterized in that it is provided with one-way detent mechanisms 6 and 7 having stoppers 6c and 7c, respectively. 2. The delivery inlet portion 1a of the rotary drum 1, which houses the long flexible shaft 2 in a spiral manner so that the long flexible shaft 2 with the cleaning tool 5 attached to the tip thereof can be fed out, and the base portion 3 of the guide cylinder 3 through which the flexible shaft 2 is inserted.
The rotating drum 1 is rotatably connected to the guide tube 3 along with the flexible shaft 2 by a handle 14 or a motor or other driving device, and the guide tube 3 is rotated in the longitudinal direction. A plurality of overlapping tubes 3c, 3d are provided which can be expanded and contracted by sliding each other, and between the proximal end side and the distal end side of the guide tube 3 are normally biased so that the overlapping tubes 3c, 3d are extended. A spring 10 is provided on the base end side and the distal end side of the guide tube 3, and a reverse spring 10 is provided on the base end side and the distal end side of the guide tube 3, and is engaged with the flexible shaft 2, and the feeding direction of the flexible shaft 2 is switched by the feeding direction switching members 6d and 7d. One-way detent mechanisms 6 and 7 having stoppers 6c and 7c are provided, respectively, and the feed direction switching members 6d and 7d of the one-way detent mechanisms 6 and 7 are interconnected by a flexible connecting member 11. A vacuum cleaner for drain pipes, etc., characterized in that the switching members 6d, 7d are interlocked by manually operating only one of the feeding direction switching members 6d, 7d.