JPH07266183A - Rotary windshield wiper - Google Patents

Abstract

PURPOSE:To provide a rotary windshield wiper capable of observing the inside easily at all times by making up an observing part facing to an observation window all transparent in structure. CONSTITUTION:A wiper body 20 is installed in a hollow framed clamping frame 1 with a ring engaging part 3, and this wiper body 20 is integrally formed by a ring wiper frame 21 opposedly installed in the frame 1, and a disklike window part 22 consisting of a transparent material attached to the wiper frame 21 so as to cover a hollow part 2a of a frame hollow yoke 2. In addition, the wiper frame 21 is supported on the frame 1 free of rotation in a state of being engaged with the engaging part 3, and thereby air is made possible to be sprayed to the engaged part 24 from the engaging part 3 of the frame 1 aslant toward the ring direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary wiper which operates by using air pressure as a driving source.

[0002]

2. Description of the Related Art Generally, CNC machining centers and C
In NC lathes, grinders, parts washer and the like, cutting work and washing work are performed while using cooling water and washing water in a sealed interior. In order to be able to observe these working conditions from the outside without opening a closed door, conventionally, a rotary wiper equipped with a rotating disk made of transparent tempered safety glass or the like was installed inside the viewing window. There is.

In this rotary wiper, a rotating disk is rotated by an electric motor attached to a frame so that the rotating disk catches water spattering toward the viewing window, and the centrifugal force prevents water from adhering to the rotating disk. The internal working status can be observed from the viewing window through the transparent rotating disk. But,
The rotary wiper has a problem that the supporting member that rotatably supports the center of the rotating disk faces the surface of the rotating disk that serves as a viewing window, and thus the area of the viewed portion is small, which hinders observation.

In addition, it cannot be used unless there is a power source for driving the motor nearby, which is very inconvenient. Furthermore, since it is installed in a situation where cooling water and cleaning water are constantly scattered, an electric leakage accident or There was a problem that an electric shock accident might occur due to the electric leakage. In addition, when dust or cutting debris is clogged in the gap of the rotating disk, the motor may be overloaded and burned out, and it is difficult to always use it stably for a long time without causing damage. There was a problem.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary wiper in which the peep portion facing the peep window is made entirely transparent so that the inside can always be easily observed. Another object of the present invention is to eliminate the need for a power source for driving a motor, to prevent the occurrence of electric leakage and electric shock, and to easily use the rotary type for a long time without causing damage. To provide a wiper.

[0006]

The rotary wiper of the present invention which achieves the above object is provided with a wiper body on a hollow frame-shaped fixing frame having an annular engaging portion, and the wiper body is fixed to the fixing frame. An annular wiper frame opposite to the frame and a disc-shaped window made of a transparent material attached to the wiper frame so as to cover the hollow portion of the fixing frame hollow frame are integrally formed, A ring-shaped engaged portion provided on the frame is rotatably supported on the fixing frame with the engaging portion of the fixing frame engaged with the engaging portion of the fixing frame. An air injection port capable of injecting air obliquely in the annular direction is provided to the engaged portion.

[0007]

According to the present invention, the wiper frame of the wiper body having the disk-shaped window portion made of the transparent material is constituted as described above, and the annular engaged portion provided on the wiper frame is fixed to the fixing frame. Since it is rotatably supported by the fixing frame while it is engaged with the mating part, and air is jetted from the engaging part to the engaged part, the support member that rotatably supports the center of the rotating disk as in the past can be seen. It is possible to prevent the window from becoming a window, obstruction by a mounting member or the like, and the inside can always be easily observed through the transparent window.

Further, since it is operated by air, there is no need for a driving power source nearby, and there is no risk of a leakage accident or an electric shock accident. Furthermore, since an electric motor is not used, even if dust or cutting debris is clogged in the gap between the rotating wiper body and the fixing frame, burnout due to overload will not occur and the rotary wiper will be stable over a long period of time. Can be used.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view showing an example of the rotary wiper of the present invention, and FIG. 2 is a sectional view thereof.
The hollow frame-shaped fixing frame 1 is attached to an attachment object such as a viewing window, and the wiper body 20 is rotatably attached to the fixing frame 1.

The fixing frame 1 has a ring-shaped hollow frame 2, and an engaging portion 3 composed of an annular convex portion is formed on the peripheral edge portion of one side of the hollow frame 2 to form a hollow frame 2. On the other side,
It is a surface that can be attached to the mounted object. In the engaging portion 3, from the inlet 10a of the air introducing member 10 connected to the air supply means (not shown) attached to the hollow frame 2 to the engaged portion 24 provided in the wiper body 20 described later. An air injection port 4a for injecting air obliquely toward the annular direction and an air supply path 4 for supplying air to the air injection port 4a are provided (FIG. 3).

Further, a predetermined interval (equal intervals of 120 degrees in FIG. 1) is provided on one surface of the hollow frame 2 inside the engaging portion 3.
Through holes 5 penetrating the surface on the other side are formed at three locations,
The inner peripheral portion 6 is formed as a female screw portion. A support member 8 that rotatably supports a rotary member 7 including a small rolling bearing is screwed into the through hole 5 so as to project toward one side of the hollow frame 2. As shown in FIG. 4, the support member 8 has a screw portion 8a screwed into the through hole 5 and a head portion 8b into which the inner mounting portion 7a of the rotating member 7 is fitted, and the shaft of the screw portion 8a. The core P-P and the axis O-O of the head portion 8b are eccentric to each other by a distance x to one side.

A linear groove 8c is formed on the end surface of the supporting member 8 on the side of the screw portion 8a. By inserting a tool into the groove 8c and turning the supporting member 8, the supporting member 8 can be attached to and detached from the through hole 5. Has become. The rotating member 7 is formed in a ring shape,
The inner mounting portion 7a having a hollow portion is the head portion 8b of the support member 8.
The outer peripheral surface of the outer peripheral portion 7b, which is fitted into and rotates with, is formed in a substantially V-shaped cross section that narrows toward the tip.

The wiper main body 20 has a ring-shaped wiper frame 21 provided opposite to the fixing frame 1 and a wiper frame 21 so as to cover the hollow portion 2a of the hollow frame 2 of the fixing frame 1.
It is integrally configured with a disk-shaped window portion 22 which is attached and fixed to one side and is made of only a transparent material such as reinforced glass or reinforced plastic. On the other side of the wiper frame 21,
An engaged portion 24 formed of an annular recessed portion that can be engaged with the engaging portion 3 of the fixing frame 1 via a predetermined gap is formed, and the wiper frame 21 on the other side of the mounted window portion 22 is formed.
The inner side surface of the groove 25 has a groove 25 whose annular opening side expands in a substantially c-shape.
And the outer peripheral surfaces of the outer peripheral portions 7b of the rotating members 7 attached to the fixing frame 1 in the groove 25 are brought into contact with each other, and the wiper frame 21 is fixed to the fixing frame 1.
It is designed to be rotatably supported with respect to.

Further, as shown in FIG. 5, the surface 24a of the engaged portion 24 of the wiper frame 21 facing the engaging portion 3 of the fixing frame 1 receives the air jetted from the air jet port 4a. For receiving a plurality of receiving portions 2 formed in the shape of a long groove
6 is formed. Reference numeral 11 is a washer used when screwing the support member 8 into the through hole 5, and 15 is a holding bolt, which is screwed into a hole portion 16 communicating from the outer peripheral surface of the hollow frame 2 so as to be orthogonal to the through hole 5. The support member 8 mounted in the through hole 5 is pressed and fixed.

In the wiper body 20, the threaded portion 8a of each support member 8 is screwed into the through hole 5 and the axial center OO of the head portion 8b is eccentric in the fixed frame 1 inward.
After the wiper frame 21 of the wiper body 20 is temporarily attached to the rotating member 4 attached to the head 8b of each support member 8, the support member 8 is tightened, and the shaft center OO of the head 8b is screwed.
The outer peripheral portion 7b of each of the three rotating members 4 is moved toward the outer side of the axis P-P of a by the groove 25 of the wiper frame 21.
It is possible to make the wiper frame 21 rotatably and surely supported by the fixed frame 1 by pressing the screw portion 8a of the support member 8 with the pressing bolt 16 while abutting and engaging with each other.

When the rotary wiper of the present invention having the above-mentioned structure is supplied to the two air supply passages 4 through the air introducing member 10 connected to the air supply source (not shown),
Air is jetted to the concave engaged portion 24 of the wiper frame 21 of the wiper body 20 from the two air jet ports 4a at the tip of the air supply passage 4. Air is obliquely jetted from the air jet port 4a toward the engaged portion 24 in the annular direction, and the air pressure thereof drives the wiper body 20 to rotate.

Since a plurality of long groove-shaped receiving portions 26 are formed on the surface 24a of the engaged portion 24, the air jetted from the air jet port 4a also hits the receiving portion 26 and its air pressure is applied. By pressing the receiving portion 26, the wiper body 20 is rotationally driven at a higher speed. Even if the water during the work is scattered on the disk-shaped window portion 22 of the wiper body 20, the water is scattered by the centrifugal force without adhering to the window portion 22. So, for example,
When the rotary wiper is attached to the sight window of a machine tool,
The window can be seen through the transparent window portion 22 at all times, and the window portion 22 is entirely made of a transparent material, and the wiper frame 21 is rotatably supported. The support member that rotatably supports the center does not come into contact with the window portion that serves as the viewing window, and observation is not hindered, and the entire interior can be easily observed at all times.

Since the wiper body 20 rotates in a state in which air is blown out from the gap between the engaging portion 3 of the fixed frame 1 and the engaged portion 24 of the wiper body 20, the water splashes inside the rotary wiper. Since the engaging portion 3 is formed in a convex shape and the engaged portion 24 is formed in a concave shape without entering, it is possible to further prevent the splashing water from entering.

As described above, in the rotary wiper of the present invention, the hollow frame-shaped fixing frame 1 having the annular engaging portion 3 is provided with the wiper main body 20, and the wiper main body 20 is opposed to the fixing frame 1. The annular wiper frame 21 and the disk-shaped window 22 made of a transparent material attached to the wiper frame 21 so as to cover the hollow portion 2a of the fixing frame hollow frame 2 are integrally formed. The wiper frame 21 is rotatably supported by the fixing frame 1 while the annular engaged portion 24 provided on the fixing frame 21 is engaged with the engaging portion 3 of the fixing frame 1. Since the air injection port 4a capable of injecting air obliquely in the annular direction from the mating portion 3 to the engaged portion 24 is provided, other than a transparent rotating disk facing the surface of the viewing window as in the conventional case. Transparent window with parts removed Since the 2 only, a transparent window portion 22
Therefore, the inside can be easily observed.

Further, since the rotary wiper can be easily actuated by the air pressure, there is no need for a driving power source nearby, and there is no risk of electric leakage or electric shock. Also, because it does not use an electric motor,
Even if dust or cutting debris is clogged in the gap between the rotating wiper body 20 and the fixing frame 1, it does not cause burnout due to overload, and can be used stably for a long period of time without damaging the rotary wiper. It becomes possible to do. Further, since the air blows out toward the outside, dust and cutting debris will not be easily clogged in the gap between the rotating wiper body 20 and the fixing frame 1.

Further, on the surface 24a of the engaged portion 24 of the wiper body 20 facing the engaging portion 3 of the fixing frame 1, a plurality of receiving portions 26 for receiving the air jetted from the air jet port 4a are formed. Therefore, the wiper body 20 can be rotated more efficiently than when the receiving portion 26 is not provided. FIG. 6 shows another example of the rotary wiper of the present invention. In the above-described embodiment, the rotary wiper includes a support member 8 screwed into the through hole 5 of the fixed frame 1 and a rotary member 7 fitted into the support member 8. Instead of the rotation supporting means of the wiper body 20, one large ring-shaped rolling bearing 12 is used.

The inner mounting portion 12a of the rolling bearing 12 is fitted with the mounting portion facing the outer periphery of the hollow frame 2 of the fixed frame 1, and the outer mounting portion 12b is fitted with the inner peripheral portion of the wiper frame 21 of the wiper body 20. It has been configured. Thus, even if the wiper frame 21 is rotatably attached to the hollow frame 2 of the fixing frame 1 via the rolling bearing 12,
The same effect as described above can be obtained.

FIG. 7 shows still another example of the rotary wiper of the present invention. In the above-described embodiment, the supporting member 8 screwed into the through hole 5 of the fixed frame 1 and the rotating member fitted to the supporting member 8 are provided. An air bearing 13 is used in place of the rotation supporting means of the wiper body 20 formed of the member 7. That is, in this embodiment, the engaging portion 3 of the fixed frame 1 that engages with the concave engaged portion 24 formed in the wiper frame 21 is provided on the inner peripheral side of the hollow frame 2 and the outer periphery of the wiper frame 21 is provided. Protrusion 27 having a rectangular cross section, which is annularly projected
Is provided, and the wiper frame 21 is attached to the hollow frame 2 by the pressing member 28 and the bolt 29 while forming a continuous gap S with a predetermined interval around the protrusion 27 and the outer periphery of the wiper frame 21. There is.

The air jetted from the air jet port 4a of the engaging portion 3 is discharged from the gap between the engaging portion 3 and the engaged portion 24 to the outside of the wiper body 20 through the continuous gap S. The air bearing 13 is constructed in this manner. Needless to say, even if the wiper frame 21 is rotatably attached to the fixing frame 1 via the air bearing 13 as described above, the above effects can be obtained.

Further, in the above-described embodiment, the engaging portion 3 of the fixing frame 1 is formed in a convex shape, and the wiper body 20
Although the engaged portion 24 is formed in a concave shape, it can be reversed. Further, the receiving portion 28 formed on the surface 24a of the engaged portion 24 may be provided with a plurality of blades at predetermined intervals instead of having the long groove shape to receive the air pressure. It is needless to say that the present invention can be implemented in other aspects without being limited to the aspects of the embodiments. Further, the rotary wiper of the present invention can be used not only by being attached to a window such as a peep window but also as the window itself.

[0026]

As described above, in the rotary wiper of the present invention, the wiper main body is provided in the hollow frame-shaped fixing frame having the annular engaging portion, and the wiper main body is opposed to the fixing frame. An annular wiper frame and a disk-shaped window portion made of a transparent material attached to the wiper frame so as to cover the hollow portion of the fixing frame hollow frame are integrally configured,
The wiper frame is rotatably supported on the fixing frame while the annular engaged portion provided on the wiper frame is engaged with the engaging portion of the fixing frame, and the engagement is performed on the fixing frame. Since an air injection port capable of injecting air obliquely from the portion to the engaged portion in the annular direction is provided, a supporting member for rotatably supporting the center of the rotating disk, which is the window portion, is provided as in the conventional case. The inside can always be easily observed through the transparent window portion without unnecessary obstruction.
In addition, since it is operated by air, a power source for driving the motor is not required, no electric leakage accident or electric shock accident occurs, and it can be used stably for a long period of time without easily causing damage.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a rotary wiper of the present invention.

FIG. 2 is a cross-sectional view of the rotary wiper shown in FIG.

FIG. 3 is an explanatory sectional view of an air supply path.

4A and 4B are partial explanatory views of a rotation support unit that supports rotation of the wiper body, FIG. 4A is a front view, and FIG. 4B is a right side view.

FIG. 5 is a rear view of the main part of the wiper body.

FIG. 6 is a sectional view of an essential part showing another example of the rotary wiper of the present invention.

FIG. 7 is a cross-sectional view of essential parts showing another example of the rotary wiper of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixing frame 2 Hollow frame 2a Hollow part 3 Engaging part 4a Air injection port 7 Rotating member 20 Wiper body 21 Wiper frame 22 Window part 24 Engaged part 24a Engaged part surface 28 Receiving part

Claims (5)

[Claims] 1. A hollow frame-shaped fixing frame having an annular engaging portion, a wiper body provided with the wiper body, the annular wiper frame facing the fixing frame, and the fixing frame hollow frame. Is integrally formed with a disk-shaped window portion made of a transparent material attached to the wiper frame so as to cover the hollow portion of the wiper frame, and the annular engaged portion provided on the wiper frame is fixed to the fixing frame. The wiper frame is rotatably supported on the fixing frame in a state of being engaged with the engaging portion, and the fixing frame is slanted in air in the annular direction with respect to the engaged portion from the engaging portion. A rotary wiper with an air injection port that can inject air. 2. The rotating frame rotatably supports three rotating members at predetermined intervals, and the outer periphery of the rotating members is brought into abutting engagement with the inside of the wiper frame so that the wiper frame is fixed. The rotary wiper according to claim 1, wherein the rotary wiper is configured to be rotatably supported, and the rotary member is movable in and out of the fixing frame. 3. The rotary wiper according to claim 1, wherein the wiper frame is rotatably attached to the fixing frame via a rolling bearing. 4. The rotary wiper according to claim 1, wherein the wiper frame is rotatably attached to the fixing frame via an air bearing. 5. The plurality of receiving portions for receiving the air jetted from the air jet port is formed on the surface of the engaged portion facing the engaging portion. Rotary wiper.