JPH045281Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of a planer for performing the same process.

[Prior Art] In the process of cutting a part of wood to form a step, a planer is used which has a structure in which the cutter body is exposed from the side of the frame.

For this reason, there is a risk that the cutter barrel exposed from the frame may come into contact with the worker, and generally a safety cover is provided to protect the worker by preventing the cutter barrel from being exposed.

For example, as described in Japanese Utility Model Application No. 59-113586, a conventional planer is constructed such that a safety cover is biased by a leaf spring so as to cover the cutter body at all times.

Then, by performing the same operation, the safety cover swings against the leaf spring to expose the cutter body.

For this reason, it was desired that leaf springs not only operate smoothly, but also be able to operate reliably even when cutting debris gets in, and be inexpensive to manufacture.

However, although the structure is simplified when such a plate spring is used for sliding, there is a problem in that smooth operation cannot be performed.

That is, since cutting debris and the like accumulate on the sliding portion of the leaf spring, there has been a problem in that the safety cover sometimes does not close.

[Problems to be solved by the invention] The present invention was made in view of the above circumstances, and its purpose is to provide a plane that is easy to assemble and equipped with a safety cover that operates reliably. There is.

[Means for Solving the Problems] The present invention provides a safety cover that covers the exposed part of the cutter body and is rotatably attached to the frame, and a coil-shaped safety cover that is pulled toward the frame. One end of the spring is fixed to a safety cover, a gap is formed in the spring in the extension direction, and the spring is fitted and fixed to a protrusion formed on the frame, and a cover that covers the protrusion and the shaft attachment part is attached to the frame. This problem is solved by pressing the spring with a cover so that the spring does not come off from the protrusion.

[Function] A protrusion is provided on the frame for the spring to function as the safety cover, and the spring fits into the gap between the springs to determine the spring's action position.The spring is held in place by the cover to prevent it from coming off the protrusion, so it is easy to assemble. In addition to being simple, the structure is also simplified, and the operation is less likely to be impaired even if cutting debris enters.

The spring is attached at one end to pull the safety cover, and operates to cover the cutter body at all times.

[Example] The present invention will be explained based on an embodiment shown in the drawings. Fig. 1 is a side view of the main part showing an embodiment of the plane according to the invention, and Fig. 2 is a side view of the main part. A longitudinal sectional view, FIG. 3 is a side view of the plane, and FIG. 4 is a front view of the plane.

In FIG. 1, the plane is a plane that performs the same operation by exposing the side surface 2 of the cutter body 1 from the frame 3, and the safety cover 4 that covers the exposed part of the cutter body 1 is attached to the pivot parts 4a and 4b. One end 6 of a coiled spring 5 is fixed to the safety cover 4, and the other end 7 is provided with a protrusion 8 on the frame 3, which fits into the gap between the springs 5 and is fixed. .

The protrusion 8 of the frame 3 is composed of a rib formed in a substantially L-shape, and a spring 5
If you create a gap and push it in so that it stretches out a little,
The gap between the spring 5 and the protrusion 8 fit easily.

Further, the safety cover 4 is provided with shafts 9a and 9b and is configured to swing and cover the side surface 2 of the cutter body 1, and the spring 5 causes the safety cover 4 to cover the cutter body 1 at all times. It's encouraging.

Further, a hook 10 is formed on the safety cover 4 to fix one end 6 of the spring 5, and is configured so that the one end 6 of the spring 5 can be easily hooked and fixed.

In FIG. 2, the spring 5 is held down by a portion 13 of the cover 12 with the gap fitted into the projection 8.

The safety cover 4 is configured to swing as shown by the dotted line in the figure.

In FIGS. 3 and 4, the planer is equipped with a handle 14 at the top and a knob 16 at the tip for adjusting the height of the lower front plate 15. A safety cover 4 is provided to swing on the side surface of the frame 3.

In such a configuration, when assembling the plane, one end 6 of the spring 5 is fixed to the safety cover 4 so as to be hooked thereon, and then the other end 7 is fitted into the protrusion 8 of the frame 3.

By applying the cover 12, the portion 13 of the cover 12 can press the portion of the spring 5 that fits into the protrusion 8 and securely fix the spring 5.

In addition to being extremely easy to assemble, this type of assembly is simple, and even if cutting debris gets inside, there are no sliding parts, so operation will not be hindered, and it is expected that it will work reliably. can.

A spring similar to the conventional spring 5 is sufficient, and a projection 8 formed on the frame 3 is sufficient.
, as long as the gap between the springs 5 can be fitted, and it can be prevented from coming off by pressing with the part 13 of the cover 12, so it is easy to assemble and has the advantage of being cheaper to manufacture. have

When producing the spring 5, one end 6 is the safety cover 4.
It is simple, as it only needs to have a hook-shaped bent part so that it can be hung on the hook, and the other end can be left cut off.

Further, the protrusion 8 of the frame 3 does not necessarily have to be formed in an L-shape, and the other end 7 of the spring 5
As long as it can be fixed by the gap between the springs 5, it can be used in the same way even if it is formed in any direction.

[Effects of the invention] Because the present invention is constructed in this way, it is easy to assemble, and even if cutting debris gets into the vicinity of the spring, it will have little effect on the operation, and reliable operation is expected. In addition to this, there is no problem of irritation if the spring comes off during use, and because the structure is simple, it is extremely effective in manufacturing, and it is possible to obtain an extremely practical planer at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main parts of an embodiment of the plane according to the present invention, FIG. 2 is a vertical sectional view of the main parts, FIG. 3 is a side view of the plane, and FIG. FIG. 1... Katsuta body, 3... Frame, 4... Safety cover, 5... Spring, 6... One end, 7...
Other end, 8... protrusion, 10... hook, 12... cover.

Claims (1)

[Scope of utility model registration request] For planes in which the sides of the katsuta body are exposed from the frame to perform the same process, a safety cover that covers the exposed part of the katsuta body is pivotally attached to the frame and swingable, and the safety cover is pulled toward the frame. One end of a coiled spring is fixed to the safety cover so as to be tensioned, and a gap is formed in the spring in the extension direction, and the spring is fitted and fixed to a protrusion formed on the frame, and this protrusion and the shaft attachment part are covered. The planer is characterized in that the frame is provided with a cover and the spring is pressed by the cover so that the spring does not come off from the protrusion.