JPH0137126B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Industrial Application Field The present invention relates to a cleaning rotary tool suitably used for polishing and removing scale from the outer surface of an automobile body.

(2) Conventional technology Conventionally, when polishing or removing limescale from the exterior of an automobile body, a sponge coated with wax or limescale remover was manually rubbed onto the exterior of the vehicle, or a sponge pad was rotated. Using a rotary tool to obtain.

(3) Problems to be solved by the invention Manually polishing and removing limescale is quite hard work and troublesome. In addition, there are two types of rotary tools: those in which the axis of rotation and the axis of the sponge pad are aligned, and those in which the sponge pad is eccentric with respect to the axis of rotation.Rotary tools with eccentric sponge pads are often used because there are fewer polishing spots. However, with any rotary tool, the liquid agent adheres to the sponge pad each time, making the work complicated and inefficient.
Also, if you apply a liquid to the outside of the car body and polish it with a rotary tool, there is no need to apply the liquid to the sponge pad as described above, but at high temperatures and dry conditions, the liquid on the outside of the car dries, causing the surface of the car to dry. The application of the liquid to the area must be repeated.

The present invention has been made in view of the above circumstances, and provides a rotary tool in which the sponge pad is eccentric from the center of rotation to reduce polishing spots, and the working efficiency is improved by making it possible to discharge liquid from the center of the sponge pad. The purpose is to provide.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, according to the present invention, a case housing a drive unit having a drive shaft,
A gripping arm extending outward perpendicularly to the drive shaft is integrally provided, and a valve housing defining a valve chamber for allowing one end of the drive shaft to enter in a fluid-tight and rotatable manner is fixed. , the drive shaft is provided with a first passage that communicates with the valve chamber over its entire length, and the valve housing has an inlet passage connecting the valve chamber with a supply conduit for supplying a liquid agent. An on-off valve is provided to communicate and cut off communication between the two, and the valve shaft of the on-off valve is biased in the closing direction away from the drive shaft, and its rear end protrudes from the valve housing to move the drive shaft in the axial direction. A support body is fixed to the other end of the drive shaft, and the support body rotatably supports a rotary shaft that is eccentrically arranged with respect to the drive shaft and has a tip protruding outside the case. A disc-shaped sponge pad is fixed to the tip of the rotating shaft with its axes aligned with each other, and a second passage passing through the rotating shaft in the axial direction is provided between the substantially central part of the sponge pad and the first passage. communicated via.

(2) Action When the grip arm is gripped with one hand and the drive section is activated, the drive shaft rotates and the sponge pad also rotates. When this sponge pad is pressed against the surface to be polished, since the sponge pad is eccentric with respect to the drive shaft, it rotates around the axis of the drive shaft while rotating together with the rotation shaft. At this time, if you hold the valve housing with your other hand, you can forcefully press the sponge pad against the surface to be polished, and if you hold the rear end of the valve shaft with your other hand, the liquid will be sprayed from approximately the center of the sponge pad. It is discharged towards the polished surface.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings.The case 1 is composed of a cylindrical portion 2 with a bottom and a cylindrical portion 3 coupled to the open end of the cylindrical portion 2 with a bottom. A drive section 4 is housed in the case 1 so as to be sandwiched between a bottomed cylindrical section 2 and a cylindrical section 3.

The drive unit 4 has a plurality of blades (not shown) that are rotationally driven by compressed air, and a drive shaft 5 to which these blades are fixed has both ends protruding from the drive unit 4, and the cylindrical part 3 placed concentrically with.

A gripping arm 6 is integrally provided on the outer side of the bottomed cylindrical portion 2 and extends outward perpendicularly to the drive shaft 5. air supply path 7 for supplying
is provided along the entire length. Also, the gripping arm 6
A connecting fitting 9 is attached to the tip of the housing 9 to connect a hose 8 for guiding compressed air from a compressed air supply source (not shown).

A short cylindrical valve housing 11 is fixed to the center of the outer surface of the closed end of the bottomed cylindrical portion 2 of the case 1 with a plurality of bolts 10 . A valve chamber 12 having the same axis as the axis of the drive shaft 5 is defined in the valve housing 11, and one end of the drive shaft 5 rotatably passes through the closed end of the bottomed cylindrical portion 2 to form a valve chamber. Rushed into 12. Furthermore, a seal member 13 surrounding the drive shaft 5 is provided between the valve housing 11, the bottomed cylindrical portion 2, and the drive shaft 5.
This achieves sealing between the valve chamber 12 and the inside of the case 1, as well as between the valve chamber 12 and the outside.

The drive shaft 5 has a first passage 14 along its entire length.
is bored, and this first passage 14 communicates with the valve chamber 14.

Further, an inlet passage 15 is perforated in the valve housing 11 so as to be orthogonal to the valve chamber 12, and an on-off valve 16 that communicates with and shuts off the inlet passage 15 and the valve chamber 12 is provided. Further, at the open end of the inlet passage 15, there is a supply pipe 17 for introducing a liquid from a liquid agent supply source (not shown) such as wax or scale remover.
A connecting fitting 18 is attached to connect the two.

The on-off valve 16 includes a valve hole 19 that is provided between the valve chamber 12 and the inlet passage 15 on the axial extension of the drive shaft 5, and a valve body 20 that can be seated at the opening end of the valve hole 19 on the valve chamber 12 side. The drive shaft 5 having the valve body 20
The valve shaft 21 is made up of a valve shaft 21 that is movable on an extension of the axis of the valve shaft 21, and a spring 22 that biases the valve shaft 21 in the valve-closing direction.

The valve body 20 is an O-ring, and is fitted into the middle part of the valve shaft 21. Further, the valve shaft 21 gently passes through the valve hole 19 and further projects from the valve housing 11 via the seal member 23 . A spring 22 is interposed between the tip of the valve shaft 21 and a ring-shaped receiving plate 24 supported by the seal member 13. A large-diameter disk-shaped pressing portion 25 is provided at the rear end of the valve shaft 21 protruding from the valve housing 11. By pressing this pressing portion 25 against the spring force of the spring 22, the opening/closing valve 16 is opened. opens.

The other end of the drive shaft 5 protruding from the drive section 4 is fixed to a support body 26. That is, the support body 26 is
The other end of the drive shaft 5 is fitted into a hole 27 provided in the center of one end surface of the support body 26, which is rotatable around the axis of the drive shaft 5 and is disposed with a portion protruding into the cylindrical portion 3. Ru. An O-ring 28 is interposed between the outer surface of the drive shaft 5 and the inner surface of the hole 27, and a liquid chamber 29 is defined between the other end surface of the drive shaft 5 and the bottom of the hole 27. In this state, the support 26 is fixed to the other end of the drive shaft 5 by screwing the bolt 30 inserted from the outside of the support 26 onto the drive shaft 5 .

A support hole 3 having an axis eccentric to the axis of the hole 27 is provided on the end surface of the support body 26 protruding from the cylindrical portion 3.
1 is bored, and an insertion hole 32 having the same axis as the support hole 31 is provided between the center of the closed end of the support hole 31 and the bottom of the hole 27 .

A rotating shaft 34 having a small diameter portion 33 inserted into the insertion hole 32 is rotatably supported in the support hole 31 via a bearing 35 . That is, the bearing 35a is
Bottomed cylindrical support member 3 fitted into support hole 31
7 and a retaining ring 38 fitted to the inner surface of the support hole 31 near the open end. On the other hand, a nut 39 is screwed onto the rotating shaft 34, and the inner ring 35b of the bearing 35 is held between the nut 39 and a support step 40 provided on the rotating shaft 34. Furthermore, a seal member 41 supported by a support member 37 is interposed between the small diameter portion 33 and the inner surface of the insertion hole 32.

In this way, the rotary shaft 34, which is rotatably supported by the support body 26 at a position eccentric to the drive shaft 5, has a second passage 42 passing through it in the axial direction.
is bored, and this second passage 42 is connected to the liquid chamber 29.
It communicates with the first passage 14 via.

A mounting member 44 having a disk-shaped sponge pad 43 is fixed to the tip of the rotating shaft 34, and a through hole 45 coaxially communicating with the second passage 42 is provided in the center of the sponge pad 43.

In the support body 26, on the side opposite to the rotation shaft 34 and open to the drive shaft 5, there is a rotation shaft 34 in an eccentric position,
A balance weight 46 for balancing the mounting member 44 and the sponge pad 43 is attached with bolts 47 and nuts 48.

Next, the operation of this embodiment will be explained. For example, when polishing the outer surface of an automobile body, the air supply line 7 is connected to a compressed air supply source via the hose 8, and the inlet is connected via the supply line 17. Passage 15 is connected to a source of liquid wax. In this state, when the grip arm 6 is gripped with one hand, for example, the right hand, and the drive unit 4 is actuated with compressed air, the drive shaft 5 rotates, and the sponge pad 43 rotates around the axis of the drive shaft 5. . Therefore, when the sponge pad 43 is pressed against the outer surface of the vehicle body by placing the other hand, for example, the left hand, on the pressing part 25, the sponge pad 43 is pressed against the rotating shaft 34, which is eccentric from the drive shaft 5.
At the same time, it rotates around the axis of the drive shaft 5 and rubs the outer surface of the vehicle body.

Moreover, since the pressing part 25 is pressed, the on-off valve 16 is opened, and the liquid wax is transferred from the inlet passage 15 to the valve hole 19, the valve chamber 12, the first passage 14, the liquid chamber 29, and the second passage 42. It is then discharged into the through hole 45 at the center of the sponge pad 43. Therefore, the trouble of applying liquid wax to the sponge pad 43 can be saved, and the outer surface of the vehicle body can be efficiently polished and polished evenly.

The rotary tool of the present invention can be used not only for polishing the outer surface of a vehicle body as described above, but also for removing limescale. Further, the drive unit 4 may be operated by electric power.

C. Effects of the Invention As described above, according to the present invention, a gripping arm extending outward perpendicularly to the drive shaft is integrally provided in a case housing a drive unit having a drive shaft, and A valve housing defining a valve chamber into which one end is inserted in a fluid-tight and rotatable manner is fixed to the drive shaft, a first passage communicating with the valve chamber is provided over the entire length of the drive shaft, The valve housing is provided with an on-off valve to communicate and cut off the valve chamber and an inlet passage to which a supply pipeline for supplying liquid can be connected, and the valve shaft of the on-off valve is separated from the drive shaft. The drive shaft is biased in the valve closing direction, and the drive shaft is movable in the axial direction with its rear end protruding from the valve housing, and a support is fixed to the other end of the drive shaft. A rotary shaft that is eccentrically arranged with respect to the drive shaft and whose tip protrudes outside the case is rotatably supported, and a disk-shaped sponge pad is fixed to the tip of the rotary shaft with its axes aligned with each other. Since the substantially central portion of the sponge pad and the first passage are communicated through the second passage passing through the rotating shaft in the axial direction, the sponge pad, which is eccentrically arranged with respect to the drive shaft, has two
By having two rotation centers, the surface to be polished can be polished over a wide range and effectively, and therefore the surface to be polished can be polished and cleaned efficiently and without unevenness.

Also, during cleaning work, by simply grasping the gripping arm with one hand and pressing it against the surface to be polished of the valve housing with the other hand, the sponge pad can be strongly pressed against the surface to be polished while stably supporting the entire tool. can. In addition, during this work, you simply press the valve shaft of the on-off valve using a part of your other hand, such as your thumb or palm, in the same direction as the direction in which you push the tool, and the liquid is applied to the sponge pad. Since it can be discharged easily and at any time to the central part, this, together with the ability to polish a wide range of surfaces with the eccentric sponge pad as mentioned above, greatly contributes to improving the work efficiency of cleaning work. obtain.

[Brief explanation of drawings]

The drawing is a longitudinal sectional side view of one embodiment of the present invention. 1... Case, 4... Drive section, 5... Drive shaft,
6...Gripping arm, 11...Valve housing, 14
...first passage, 15...inlet passage, 16...opening/closing valve, 17...supply pipe line, 21...valve stem, 26...
Support body, 34... Rotating shaft, 42... Second passage, 4
3...Sponge pad.

Claims (1)

[Claims] 1. A case 1 housing a drive unit 4 having a drive shaft 5 is integrally provided with a gripping arm 6 extending outward perpendicular to the drive shaft 5, and one end of the drive shaft 5 is held in a liquid-tight manner. A valve housing 11 defining a valve chamber 12 for rotatably entering is fixed to the drive shaft 5, and a first passage 14 communicating with the valve chamber 12 is provided over the entire length of the drive shaft 5. 11 includes an inlet passage 15 to which a supply pipe 17 for supplying a liquid agent can be connected, and the valve chamber 1.
A valve shaft 21 of the valve shaft 21 is biased in the valve closing direction away from the drive shaft 5, and its rear end protrudes from the valve housing 11. A support body 26 is fixed to the other end of the drive shaft 5, and the support body 26 has a distal end disposed eccentrically with respect to the drive shaft 5. A rotary shaft 34 protruding outside the case 1 is rotatably supported, and a disk-shaped sponge pad 43 is fixed to the tip of the rotary shaft 34 with its axes aligned with each other. Passage 14
A rotary tool for cleaning, characterized in that the space is communicated with through a second passage 42 that passes through the rotary shaft 34 in the axial direction thereof.