JPS62264904A - Planer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to the construction of a planer that prevents danger from rotating cylinders.

``Prior art'' Planers that expose the cutting blade from the flat part of the base are constantly exposed, so the cutting blade is often accidentally damaged, or the rotating body that rotates during cutting is exposed to objects other than the material to be cut. There was a problem with the danger of contact.

For this reason, attempts were made to provide a safety cover to cover the exposed portion of the rotary cylinder, and this was effective in avoiding danger.

However, the conventional safety cover that covers the rotating body is an arc-shaped safety cover that rotates around the rotating axis of the rotating body, and when rotating the safety cover, it must be rotated coaxially with the rotating body. Therefore, a complex structure was inevitable.

For this reason, it is often necessary to check the operation of the safety cover, and in a structure where the safety cover is moved back by touching the material to be cut, it can be forcibly retreated by the material to be cut, but smooth operation cannot be achieved. If this is not achieved, the spring action may not advance, and it may be necessary to force the operation manually.

Such manual operation of the rotary cylinder or the like where the cutting blade is provided may cause injury, and is not a preferable method.

For this reason, in the past, attempts have been made to provide a safety cover with a lever or the like that can be forcibly operated, and this has been effective.

That is, the conventional structure is shown in FIGS. 2(a) and 2(b), respectively. FIG. 2(a) is a vertical cross-sectional view of a main part of an example of a conventional plane safety cover.

The rotary drum 3 is configured to be exposed between the bases 1.2 provided at the front and rear, and a safety cover 4 is provided coaxially with the rotary drum 3 so as to cover this exposed portion.

In this case, the safety cover 4 becomes structurally smaller by rotating coaxially with the rotating body 3, so the frame 5 that protects the rotating body 3 is rotated in the same shape as the safety cover 4. A surface 6 is formed on which the safety cover 4 is slid.

This configuration results in a simple structure, and as a result, it is possible to form a small device whose external shape does not differ much from that without the safety cover.

A protruding part A is formed on the opposite side of the safety cover 4 from the rotating body 3 side, and a lever B that can push this protruding part A is provided, so that the safety cover 4 can be forcibly operated. It is configured as follows.

Furthermore, as shown in FIG. 2(b), an attempt has been made to provide a safety cover 7 close to the rotating body 3, and similarly, the safety cover 7 can be installed without forming a large gap with respect to the rotating body. It can be rotated. And in this case,
A lever C protrudes from the side surface of the safety cover 7, and the safety cover 7 is forcibly operated by this lever C.

"Problem to be solved by the invention" In the conventional structure shown in FIG. 2(a), the safety cover 4
Since the safety cover 4 rotates along a large rotation surface 6 formed on the frame 5, there is a problem that a large amount of sliding friction occurs. Must be.

However, if the safety cover 4 is housed inside the frame 5 in a loosely fitted state, there is a risk that cutting debris may get stuck in the gap and the safety cover 4 may become inoperable.

Furthermore, if the safety cover 4 is housed in a loosely fitted state, there is a risk that the rotating body 3 and the safety cover 4 will come into contact unless a sufficient space is provided between the rotating body 3 and the rotating body 3 in advance.

In such a structure, the protrusion A is moved by the lever B.
When operating the safety cover 4, if the safety cover 4 is loosely fitted, not only will the lever B not be able to operate the protrusion reliably,
There was even a risk that the mating state would come undone.

Moreover, the safety cover 4 may not be restored by simply pushing the protrusion A with the lever B, and if the safety cover 4 is not restored, the rotating body 3 is exposed, making it impossible to ensure safety. , the objective could not be achieved.

In addition, in the case of another conventional structure shown in FIG. 2(b), a bearing is formed coaxially with the rotating body 3 to rotate the safety cover 7, so it is durable and does not come into contact with the rotating body 3. This eliminates the fear of doing so.

However, forming the bearing coaxially with the rotating body 3 does not allow the use of the shaft of the rotating body 3, resulting in a complicated structure and difficulty in assembly and disassembly.

Also, a safety cover 7 is provided inside the same frame 5 as the rotating body 3.
If it is provided, there is a risk that it will be affected by cutting debris and rotate together with the rotation Wi 43, making it impossible to achieve the purpose.

Furthermore, when the safety cover 7 is provided on the outside of the rotating body 3 of the frame 5, a problem arises in that the axial dimension of the rotating body 3 increases.

Moreover, the structure in which the lever C that forcibly operates the safety cover 7 protrudes from the side makes it difficult to work in narrow areas.
It is conceivable that the lever C may come into contact with the surroundings and the safety cover 7 may be inadvertently operated.

In particular, with this structure, the axial dimension of the rotary cylinder 3 becomes large, and if the lever C is made to protrude further, a larger dimension is required, resulting in a planer having a width larger than the cutting width. Ta.

"Means for solving problems".

The present invention houses a plate having approximately the width of the rotating body inside one of the bases, is configured to extend this plate by a spring action to the exposed part of the rotating body, and is provided with a knob connected to this plate. The problem was solved by making it forcibly operable.

1 action" The plate stored inside the base is extended to cover the rotary cylinder by spring action, so when cutting, the plate can be pushed by the material to be cut and stored inside the base for cutting. does not rotate when moving forward or backward,
Since it travels straight, you can expect reliable operation.

Moreover, since it can be configured to move forward and backward in the cutting direction of the material to be cut, a large force is not required to contact and store the material to be cut, and a structure that is easy to use and operate can be obtained.

And since the board can be forcibly moved forward and backward with the knob,
There is no need to worry about malfunctions.

``Embodiment'' The present invention will be described based on an embodiment shown in the drawings. FIG. 1 is a longitudinal cross-sectional view of a main part of a plane according to an embodiment of the present invention.

In FIG. 1, the planer is provided with bases 8.9 at the front and rear, and a part of the rotating body 11 is exposed from a space 10 formed between the front and rear bases 8.9.

A plate 12 extends from inside the base 9 at the rear so as to cover the rotation W411 exposed from the space 10.

Roughly, the plate 12 has a frame 1 holding the base 8.9.
A space is formed inside the plate 12, allowing the plate 12 to move freely forward and backward.

Further, the plate 12 is provided with a spring 14 and is always urged to extend into the space 10 so as to cover the rotating body 11 .

An electric motor 15 for rotating the rotary drum 11 is provided inside the frame 13, and a belt (not shown) rotates once.
It is hung on 1ii111.

A portion of the frame 13 that houses the electric motor 15 is provided with a knob 16 that allows the plate 12 to be manually moved.
It is connected to the plate 12 by.

In such a configuration, when the rotating body 11 of the plane is rotated by the electric motor 15 and the base 8.9 is slid onto a material to be cut such as wood, the plate 12 is pushed by the material to be cut and resists the spring 14. It will retreat to the inside of the frame 13.

Therefore, the rotary cylinder 11 is exposed to the space 10 formed between the front and rear bases 8.9, and the material to be cut can be cut.

Furthermore, when the base 8.9 separates from the material to be cut, such as when cutting is finished, the plate 12 no longer comes into contact with the material to be cut, and therefore extends from the inside of the frame 13 into the space 10 by the action of the spring 14. This will cover the rotating drum 11.

Therefore, the plate 12 can protect the rotary cylinder 11 as a safety cover, and can avoid danger from the rotary cylinder 11.

Moreover, the plate 12 operates independently of the rotating body 11, and roughly speaking, the plate 12 moves forward and backward in a straight line at the frame "+3 (7)".
It moves forward and backward into the interior, allowing for extremely smooth movement.

Therefore, sufficient operation can be expected by just lightly touching the material to be cut, and there is no need to increase the force of the spring 14 unnecessarily, making it possible to construct an easy-to-operate planer.

In addition, by operating the knob 16, the plate 12 is connected to the knob 16 via the flexible member 17, so the plate 12 can be moved forward or backward as desired. 12 can be easily advanced and retreated.

This type of knob 16 is convenient for checking the operation of the plate 12, and since the operation of the plate 12 can be confirmed by the knob 16, it is necessary to confirm in advance that the plate 12 moves easily with the knob 16. The planer can be used in a state in which the movement of the plate 12 is ensured.

"Effects of the Invention" According to the present invention, the board can be smoothly moved forward and backward into the space where the rotary cylinder is exposed from the base, and the board can be forcibly moved forward and backward using the knob, making it possible to use a planer that is easy and reliable to operate. Can be configured.

And, without affecting the structure of the rotary cylinder, problems such as conventional problems such as not being able to operate smoothly, malfunctions when forcing the safety cover, or the axis of the rotating cylinder. A planer that can eliminate various disadvantages such as increased dimension in the direction, more complicated structure, and troublesome manufacturing of arc-shaped safety covers, and has great effects in manufacturing and use. can be configured.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a main part of a plane according to an embodiment of the present invention. FIGS. 2(a) and 2(b) are views showing conventional planers, respectively. 8.9...Base, 10...Space, 11...
rotating body, 12... plate, 13... frame, 1
4...Spring, 15...Electric motor, 16...
・Knob.

Claims (1)

[Claims] In a plane in which bases are provided at the front and rear of a rotary cylinder having a cutting blade, and the cutting blade is exposed from a flat part of the base, a plate having approximately the width of the rotary cylinder is housed inside one of the bases, and this plate is used to expose the rotary cylinder. A planer characterized in that it is configured to extend to a portion by a spring action, and is provided with a knob connected to this plate so that it can be forcibly operated.