JPH031191Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to cover the rotating shaft of electric planes, other power tools, etc., and the rotating drive parts such as pulleys fixed to the rotating shaft to ensure safety during work. This invention relates to a cover device that also serves as a rotation knob.

Conventionally, for example, in an electric plane, the rotation axis b of the plane body a
As a cover device for covering the body, the one shown in FIG. 1 is known.

As shown in the figure, the cover d is provided with an opening d' having a diameter larger than the diameter of the end c' of the pulley c fixed to the end b' of the rotating shaft b.
It is constructed by fixing d' to the fuselage frame concentrically with the pulley end c'.

However, according to the above-mentioned cover device, when it is necessary to rotate the rotary shaft b when attaching and detaching the plane blade to and from the plane body a or when adjusting the cutting edge of the plane blade, the cover b is removed and the pulley c Since the cover d must be rotated by hand or by pulling the belt e, there are drawbacks such as the complexity associated with attaching and detaching the cover d, the rotating operation being extremely difficult and dangerous, etc. be.

The present invention is an attempt to solve the above-mentioned conventional drawbacks, and is to form a cover that also serves as a knob in correspondence with the opening of the cover body that is attached to the aircraft frame, and to form a cover that also serves as a knob in correspondence with the opening of the cover body that is attached to the aircraft frame. The knob cover is usually attached to the opening of the cover body and the knob is attached to the end of the rotating shaft. By using this as a cover for the end of the pulley and the end of the pulley in the opposite direction, it can be used as a knob for rotating the rotating shaft, making it easy and safe to rotate the rotating shaft. The purpose is to provide a cover device that doubles as a rotary knob so that it can be used for various purposes.

The present invention will be described in detail below based on an embodiment showing an electric plane, as shown in FIGS. 2 and 3.
A rotating shaft 1 is rotatably installed on a frame 2 with a bearing 3 interposed therebetween.
is fixed.

A pulley 5 is fixed to the end portion 1a of the rotating shaft 1 protruding outward from the frame 2 by a key 6, key grooves 7, 7', and a screw 8.
The rotary shaft 11 is driven and rotated by a winding power transmission means 10 in which a belt 9 is hung between the pulley 5 and a pulley fixed to a drive shaft (not shown).

Further, a cover main body 11 is attached to the outside of the frame 2 to cover the rotating shaft end 1a, the pulley 5, the belt 9, and the winding transmission means 10, respectively.

The cover main body 11 is formed with an opening 12 having an appropriate diameter larger than the diameter of the cylindrical end 5a of the pulley 5.
The cover body 11 is attached to the frame 2 with the pulley end 5a and the pulley end 5a substantially concentric with each other.

The cover 13 which also serves as a knob is shown in FIGS. 2 to 5.
As shown in the figure, the opening 12 is formed so that its outer diameter corresponds to the inner diameter, and the knob cover 13 has the pulley end 5a and the mounting hole 1.
Two engaging portions 14 and 15 are arranged in the axial direction and facing in opposite directions, and one of the engaging portions 14 is engaged with the pulley end 5a. By fitting, it becomes a knob for rotating the rotating shaft 1 as shown in FIG. Thus, the cover is configured to cover the rotating shaft end 1a and the pulley end 5a.

That is, the knob-cum-cover 13 has a bottom wall 13a.
and a peripheral wall 13b erected from the peripheral edge of the bottom wall 13a.
The fitting portion 15 is provided at the edge of the opening of the peripheral wall 13b, while the fitting portion 14 has a substantially convex shape in the longitudinal section of the bottom wall 13a. A circular protrusion 13c is formed by protruding the center part, and an annular recess 13d into which the pulley end 5a can be removably fitted in the axial direction is provided around the protrusion 13c. A long protrusion 13e is formed on the surface of the pulley end portion 5a in the axial direction so that it can be attached to and removed from the keyway 7' of the pulley end 5a in the axial direction and fixed in the periaxial direction.

Further, the opening 12 and the fitting part 15 may be formed to have a circular cross section or an arbitrary polygonal shape so that they can be attached and detached from each other in the axial direction, or the opening 12 may be formed with a screw as in the illustrated example. Formed in the hole, while
The fitting portion 15 is an opening 12 formed into a screw hole by carving a screw on the outer periphery of the opening edge of the peripheral wall 13b.
In either case, the flange 13 for the attachment end is
f is provided on the outer periphery of the base of the fitting part 15, thereby allowing the fitting part 1 to fit into the opening 12 as shown in FIG.
5 is fitted and used as a cover, the other fitting part 14, bottom wall 13a, etc. are held in a non-contact state with the pulley end 5a, etc.

Moreover, the bottom wall 13 of the knob-cum-cover 13
In the state shown in FIG. 3 in which the fitting part 14 is fitted to the pulley end 5a by forming the outer peripheral part of a into a tapered part 13g, the knob-cum-cover 13 is connected to the cover main body 11 and its opening 12. It is designed not to come into contact with the edges of the opening, etc.

Furthermore, it is preferable to provide a non-slip surface 13h of uneven stripes on the outer surface of the peripheral wall 13b of the cover 13 which also serves as a knob, as shown in the example shown in the figure, and in this way, the rotation operation when used as a rotating knob and the removal and removal operation when used as a cover are facilitated. It is convenient and easy to do.

In the above configuration, the knob-cum-cover 13 has one fitting portion 15 connected to the cover body 11.
As shown in FIG. 2, the rotating shaft end 1a and the pulley end 5a
By turning the knob-combining cover 13 in the opposite direction to that described above and engaging the other fitting part 14 with the pulley end 5a, the pulley end can be closed as shown in FIG. Since the portion 5a is fixed in the direction around the axis, the rotating shaft 1 can be rotated by gripping and rotating the portion 5a. In other words, the knob-cum-cover 13 can be used as a knob for rotating the rotating shaft 1.

As explained above, since the cover device according to the present invention which also serves as a rotation knob for a power tool etc. is constructed, the knob-cum-cover 13 is inserted into the fitting parts 14 and 15 provided in opposite directions in the axial direction. , one fitting part 15 is fitted into the opening 12 of the cover main body 11,
By closing the opening 12, it becomes a cover that covers the rotating shaft end 1a and the pulley end 5a, and the knob-cum-cover 13 is oriented in the opposite direction to the above, and the other fitting part 14 is attached to the pulley end. Part 5a
By fitting with the knife, it can be used as a knob for rotating the rotating shaft 1, and the knob-combining cover 13 can be used both as a cover and a knob. When making adjustments,
In other cases where it is necessary to rotate the rotating shaft 1, there is an effect that the rotating shaft 1 can be rotated easily and safely, and moreover, it is not necessary to remove the cover body 11.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view showing an example of a conventional cover device, and FIGS. 2 and 3 are examples of how the cover device according to the present invention, which also serves as a rotation knob for a power tool, is used. The vertical side view, FIG. 4, and FIG. 5 are a front view and a rear view, respectively, showing a cover that also serves as a knob in the device. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Frame, 5... Pulley, 5a... Pulley end, 11... Cover body, 12... Opening, 13... Cover that also serves as a knob,
14, 15... Fitting portion.

Claims (1)

[Scope of utility model registration request] The frame 2 has an opening 12 with a diameter larger than the diameter of the end 5a of the pulley 5 attached to the rotating shaft 1, and the opening is set approximately concentrically with the end of the pulley.
A knob-cum-cover 13 is formed in correspondence with the opening, and the knob-cum-cover has a cover body 11 that is attached to the pulley end and the opening. A cover device that also serves as a rotation knob for a power tool, etc., characterized in that fitting portions 14 and 15 that are removably engaged are provided in opposite directions in the axial direction.