JPS603588B2 - 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.

A vacuum cleaner for drain pipes, etc., is constructed by supporting a rotating drum on an underframe so that it can be rotated by a handle or a motor, and storing a long movable shaft with a cleaning tool attached to the tip of the rotating drum so that it can be manipulated. This has been proposed and known by the present applicant (for example, see Japanese Patent Laid-Open No. 52-154262).

The vacuum cleaner of the present invention allows the line of the movable shaft to be drawn out or drawn in simply by rotating the rotary drum, and also allows the line of the movable shaft to be drawn out and the cleaning action to be performed at the same time. This was proposed for the purpose of streamlining the cleaning of pipes, etc. The present invention is characterized in that the above-described vacuum cleaner for drain pipes and the like is provided with the following structural requirements A to E.

In other words, the surface of the windable shaft is formed into a spiral groove, and the windable shaft is fixed to the bending frame, and the windable shaft is connected to a guide tube that leads to the rotary drum's windable shaft feeding/outlet port and guides the windable shaft. {C} A pair of engaging pieces are pivotally attached to the frame of the sending-in/out mechanism so that a flexible shaft is sandwiched therebetween; The blade has a blade that can be fitted into the spiral groove of the flexible shaft, and the front blade or the rear blade of the pair of engagement pieces of the pair of legs is selectively engaged with the spiral groove of the flexible shaft. The fifth condition is that the frame is provided with an effective member for symmetrically operating the engagement pieces. Embodiments of the invention will be described below with reference to the drawings.

In Fig. 1, 1 is the central main frame la and the lower leg l.
A hollow rotating drum 4 is supported on the underframe 1, which is rotated by a handle 2 or a motor or other prime mover 3. A rotary ball 5 is fixed to the rear of the rotary drum 4 and directly connected to the handle 2, and its rotary shaft 5 is rotatably supported by a bearing 6 on the underframe 1.

The front side of the rotary drum 4 is formed with a hollow portable shaft feed-in/out port 4a, and the feed-in/out port 4a is rotatably supported by the underframe 1 and a first tube 7a forming a part of a guide cylinder 7 to be described later. be done. The prime mover, ie, the motor 3, is installed on the leg lb of the underframe 1, and is rotated by an electric current sent from a power source via an electric controller 8, which is also fixed on the underframe 1. The rotational force of the motor 3 is transmitted through the pulley 9 and the transmission belt 1.
The signal is transmitted to the rotating drum 4 via a transmission mechanism such as 0 or the like.
Reference numeral 11 denotes a removable shaft having a cleaning tool 12 such as a wire brush attached to its tip, and its proximal end reaches through a guide tube 7 to a hollow rotating drum 4, where it is wound spirally and stored.

The guide tube 7 includes a first tube 7a forming a part of the underframe 1, a second tube 7b detachably attached to the first tube 7a by screwing, and a second tube 7b. A flexible auxiliary tube body 7c made of, for example, a spiral metal wire is attached to the tube body 7c. Reference numeral 13 denotes a feed-in/out mechanism which will be described in detail after being interposed in the second tube body 7b.

In this invention, in particular, the flexible shaft 11 whose surface is formed into a spiral groove 11a is used.

That is, the movable shaft 11 has a screw shape, and is preferably made of closely wound steel wire in a spiral shape. In this case, the valleys between adjacent steel wires on the surface form continuous spiral grooves 11a. The above-mentioned spiral steel wire, which is wound in multiple layers, has appropriate flexibility and properties, and is also excellent in strength. When the above-mentioned contactable 11 rotates together with the rotating drum 4, the engagement piece in the feed-in/out mechanism 13 provided in the guide cylinder 7 is pressed into the spiral groove 11a on the surface of the contactable 11, and
The movable shaft 11 moves forward and backward by screw action.

In FIG. 2 and FIG. 3, the feed-in/out mechanism 1 of the flexible shaft 11
3 will be explained.

The frame body 13a of the sending-in/out mechanism 13 has a box shape, for example, and is fixedly inserted into, for example, the second tube body 7a of the guide tube 7. Holes 13b are provided at the front and rear of the box-shaped frame 13a, and the portable shaft 11 passes through the frame 13a through these holes 13b. A pair of engaging pieces 14, 14 are pivotally attached to the frame 13a in a positional relationship such that the movable ratchet I1 is sandwiched therebetween. Each engagement piece 14 is movably attached to the upper and lower plates 13c, 13d of the box-shaped frame 13a via a pivot 21 that is perpendicular to the adjustable shaft 11, and the front and rear of the engagement piece 14 are Blades 15a and 15b that can fit adjacent to the helical groove 11a of the shaft 11 are fixedly provided, respectively. Reference numeral 16 denotes a switching member having spring pieces 16a, 16a that open downward in a Y-shape, and the switching member 16 fixes fixed shafts 16c, 16c protruding laterally to the inner surface of the upper plate 13c of the frame 13c. By movably supporting the support piece 17, it is possible to swing back and forth.

The spring pieces 16a, 16a of the cut sliding door part 16 are a pair of engagement pieces 1
4 and 14, respectively, and displaces them symmetrically. Reference numeral 18 denotes a stopper for restricting the swinging of the sliding door member 16, and is provided at the front and rear of both the engaging pieces 14, 14, respectively.

In the illustrated state, the switching member 16 is moved forward by hand, the rear side of the pair of engagement pieces 14, 14 remains open, and the front side of the sub-coupling pieces 14, 14 remains closed. keep it. Here, the front blades 15a, 15 of both engaging pieces 14, 14
a is fitted into the helical groove 11a of the movable shaft 11, so if the movable shaft 11 is rotated together with the drum 4 by the handle 2 or the prime mover 3 in the direction of arrow P in FIG. Groove 11a and front blades 15a, 15 of engagement pieces 14, 14
A screw action occurs between the screw shaft 11 and the rotary drum 4.
It moves in the direction of arrow Q while being unrolled from the inside. That is,
Since the flexible shaft 11 is rotated and moved out, by inserting the tip end into a drain pipe or the like to be cleaned, the tool 12 such as a brush at the tip can remove clogged debris. After cleaning, the flexible shaft 11 is pulled out.
To return the rotary drum 4, tilt the switching member 16 backwards.
You just have to rotate it in the opposite direction to the above.

In any case, the engaging pieces 14, 14 must close the advancing side of the flexible shaft 11. This means that the blades 15a, 15a or 15b, 15b of the engagement pieces 14, 14 that are engaged with the spiral groove 11a of the movable shaft 11 are
This is indispensable in order to always maintain a reliable close contact between (resistance for unwinding spirally) is the spiral groove 1
This effectively acts to bring 1a and a predetermined blade into close contact. In addition, the vacuum cleaner of this invention explained above can be provided with a clutch mechanism. This mechanism uses the prime mover 3 to rotate the movable shaft 11 and remove the line so that when a strong clog is encountered while cleaning a drain pipe or the like, excessive force is not applied in the length direction of the movable koji 11. To avoid this, the progress of the koji 11 is stopped and only rotational force can be applied to the koji 11. The clutch mechanism will be explained with reference to FIGS. 1, 3, and 4. The clutch mechanism 20 includes a box-shaped frame body 13
A pair of levers 20a, 20a are pivotally connected to the outside of the frame 13a via mounting pieces 20b, 20b, and abutment is integrally provided below each lever 20a and extends through a suitable window in the frame 13a. Torsion springs 20d, 20d are provided at the pivot points of the levers 20a, 20a in order to bias the piece 20c and the abutment pieces 20c, 20c in a direction that always brings them into contact with the backs of the pair of engaging pieces 14, 14. It consists of In the state shown in Figure 4,
The handle portions of the pair of levers 20a, 20a are in an open state, and each abutment piece 20c is inserted deep into the frame 13a. In this state, the pair of abutment pieces 20c, 20c
presses the backs of the engaging pieces 14, 14 against the spring pieces 16a, 16a of the switching member 16, so both the engaging pieces 14,
14 are in a state of being substantially parallel to each other, and their blades 15a,
15a (or 15b, 15b) and the Kasono wisteria 11 are disengaged. Therefore, at this time, even if the rotary drum 4 is rotated, the dovetail shaft 11 does not move in the length direction, and only rotational force is applied. On the other hand, when the pair of levers 20a, 20a are grasped by hand and swung in the direction of arrow R in FIG. . That is, since the state shown in FIG. 3 is achieved, the blades of the engaging pieces 14, 14 remain engaged with the spiral groove 11a of the adjustable ball 11.
This state is a state during general operation, and a propulsive force in the longitudinal direction can be applied to the flexible shaft 11 along with rotation. Also, the fourth
In the state shown in the figure, when only rotational force is applied to the flexible shaft 11, and if the drain pipe etc. is extremely clogged, the rotating drum 4 and the base of the flexible shaft 11 housed therein are Slippage may occur between the ends.

In such a case, press the movable shaft 11 with the tip of the screw 19 screwed into the movable shaft feed-in/out port 4a of the drum 4, and press the movable shaft 11 against the inner wall of the feed-in/out port 4a to prevent it from slipping. It can also be temporarily fixed. According to the vacuum cleaner for drain pipes, etc. of the present invention as described above, not only can the contactable shaft 11 be moved out or put in only by rotating the rotary drum 4, but also the movable shaft 11 can be rotated while extending the line. As a result, the labor required for cleaning drain pipes, etc. can be reduced, and work efficiency can be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire vacuum cleaner of the present invention, Fig. 2 is an enlarged partial perspective view of its delivery/admission mechanism, Fig. 3 is an enlarged plan view of the delivery/admission mechanism with the frame top plate removed, and Fig. 4. FIG. 2 is an enlarged front view of the sending-in/out mechanism portion. 1 = Underframe, 2i handle, 3 = prime mover, 4 = rotating drum, 7 = guide tube, 11: flexible shaft, 11a = spiral groove, 13 =
Send-in/out mechanism, 14=engaging piece, 15a, 15b=blade, 16
: Switching member. Purple'Figure 2Figure 3Figure 4

Claims (1)

[Scope of Claims] 1. A rotating drum 4 is supported on the underframe 1 so as to be rotatable by a handle 2 or a prime mover 3, and a long flexible shaft 11 having a cleaning tool 12 attached to the tip thereof can be fed out from the rotating drum 4. In a vacuum cleaner for drain pipes, etc., which is stored in a
A vacuum cleaner for drain pipes, etc., characterized by having the constituent requirements B, C, D, and E. (A) The surface of the flexible shaft 11 is formed with a spiral groove 11a; (B) The flexible shaft 11 is fixed to the underframe 1 and communicates with the flexible shaft inlet/outlet 4a of the rotating drum 4. (C) A pair of engaging pieces 1 that can be engaged with the flexible shaft 11 in a way that it is sandwiched between the frame 13a of the sending-in and out mechanism 13.
(D) the pair of engaging pieces 1;
4 and 14 are spiral grooves 11a of the flexible shaft 11 at the front and rear of each
(E) have blades 15a, 15b that can be fitted into the pair of engagement pieces 14, 14;
15a or the rear blades 15b, 15b selectively engage with the spiral groove 11a of the flexible shaft 11, the frame 13
a switching member 1 for symmetrically operating the engaging pieces 14, 14;
6 shall be provided.