JPS5811530Y2 - Safety cover for the knife rotation knob - Google Patents

Description

[Detailed explanation of the invention] Generally, electric planes are used for rotating the plane body to a predetermined position when adjusting the amount of exposed blade edge from the surface of the famous sword which is fixed to the plane body with an adjustment bolt etc. A knob is provided on the plane body and protrudes outward from the bearing part of the plane body, but since the knob rotates integrally with the plane body, it is usually covered with a safety cover for safety reasons and the above-mentioned blade adjustment is performed. However, according to the conventional safety cover mentioned above, the cover is attached to a bearing part with a hinge so that it can be opened and closed, so installation is troublesome. Not only that, but the cost was also high.

Therefore, the present invention is an improvement on the above-mentioned safety cover, and its purpose is to facilitate installation and opening/closing operations, and to be able to close and hold the cover without rattling without requiring locking metal fittings, and at a low cost. The goal is to make it possible to implement it.

The drawings showing the embodiments of the present invention will be described in detail below.
In FIGS. 1 and 2, 1 is a plane body, which is supported in a space between a rear surface plate 2 and a front surface plate 3, and includes a plurality of swords 4 (not shown). The amount of exposure of the cutting edge is adjustable and fixed with an adjustment bolt, and a rotation knob 7 is connected to a pin 8 at one end of the plane body shaft 6 supported by the bearings 5 and 5'.
It is fixed by other appropriate means and protrudes outward from the bearing portion 5'.

Thus, the safety cover covers the surface 5a' of the bearing part 5'.
At least two or more bolts 9 (in the illustrated example, four bolts) are screwed together at predetermined intervals in square positions and protruded from the left and right sides of the knob 7 so as to surround the knob 7.
As shown in FIG. 3, the knob 7 is formed in a rectangular shape or the like having a sufficient size to cover the knob 7, with openings 11 and 12 provided from the lower end to the back side, and on both left and right sides of the back side. A retaining piece 13°13 that can be engaged with the head 9a of the bolt is formed in parallel, and the head 9a of the bolt is connected to the bearing part 5'. The cover 10 is assembled by slidably inserting the engaging pieces 13 and 13 between the surfaces 5a'.
It is constructed so that it can be attached and detached freely.

Here, the engaging pieces 13, 13 of the integral cover 10 are arranged in parallel by bending the left and right side walls 10a, 10a of the integral cover inwardly, as shown in FIG.

As shown in FIG. 5, it is provided so as to engage with the outside of the left and right bolt heads.

In this case, the spacing between the two engaging pieces 13° 13 is set to be slightly narrower than the spacing l between the bolt necks 9 a /, 9 a /, and this spacing is expanded against the elasticity of the bolt necks 9 a /, 9 a /. At the same time, both retaining pieces 13.13 are provided so as to engage with the left and right bolt heads 9a, 9a, and clamp the bolts 9, 9 by the elastic restoring force of the cover unit 10 itself. The lower ends of the engaging pieces 13, 13 are formed into double-sided portions 13a, 13a to facilitate engagement with the bolt heads 9a, 9a.

Further, as shown in FIG. 6, the retaining pieces 13.13 are bent outward from both side walls 10a, 10a of the cover unit 10 and are arranged symmetrically in parallel, and are secured to the inside of the bolt heads 9a, 9a. They may be formed so that they fit together, and in such a case, the spacing between the two retaining pieces 13 and 13 is provided in the same manner as in the above-described embodiment, and a chamfered portion is provided at the lower end.

On the other hand, for the bolts 9, flatsunk bolts are used as shown in Figures 2, 4, and 6, or regular bolts are used as shown in Figure 5. Since the end edge 13b of the engaging piece 13 is inserted between the tapered surface 9b of the countersunk head and the bearing surface 5a', the cover unit 10 can be installed without any play.

When using a normal bolt, as shown in FIG. 5, it is best to provide an inclined surface 13C on the end edge 13b of the engaging pieces 13, 13 so that the wall becomes thinner toward the tip side. As with the use of flat head bolts, the cover assembly 10 can be assembled without any looseness.

In the above configuration, a cover 10 is provided to cover the knob 7.
When installing the cover unit 10 on the bearing part 5', the knob 7 is received through the opening 11 at the lower end of the cover unit 10.
After aligning the lower ends of the left and right engaging pieces 13 and 13 between the bearing surface 5a' and the bolt head 9a, when pressed down, the cover 10 descends and covers the knob 7.

At this time, the retaining pieces 13.13 are attached to both side walls 10a. Since the cover 10 is engaged with the bolt heads 9 a , 9 a against the elasticity of the cover 10 a , the cover 10 is elastically held and does not easily come off, and is held without rattling.

Moreover, its removal is possible by pulling up the cover unit 10 as shown in FIG.

Further, the cover unit 10 is made of a suitably elastic material such as a metal plate or a plastic material.

In FIGS. 1 and 2, numeral 14 indicates a ruler, and numeral 15 indicates a dust cover.

As explained above, according to the safety cover according to the present invention,
A plurality of bolts 9 protrude from the surface of the bearing portion 5' so as to surround the knob 7 and are screwed together, and this is the head 9a.
. . . Engagement pieces 13.13 are arranged side by side on the back side so as to be able to engage with the cover unit 10, which is opened from the lower end to the back side. 9a...
Since the engaging pieces 13, 13 can be engaged and disengaged by sliding operation, the installation work can be done simply by screwing the bolt 9... into the bearing part 5'. In addition, the cover 10 can be easily installed or removed by simply engaging and disengaging the bolt head 9a, so the cover does not get in the way when gripping the knob 7 and rotating the plane body 1. It is easy to operate because it does not become
The bearing surface 5a can be easily installed as described above.
' and the bolt head 9a, so it can be tightly installed without the need for a locking member or stopper, and it will not rattle or come off when rotated. If any play occurs, simply screw in the bolt 9 and narrow the distance between the bolt head 9a and the bearing surface 5a' to easily eliminate the play. It can prevent this from occurring, and has practical effects such as being able to be manufactured at low cost due to its simple structure.

[Brief explanation of drawings]

Fig. 1 is a side view of a name plate equipped with a safety cover for the knife barrel rotation knob according to the present invention, and Fig. 2 is a side view of the plate II in Fig. 1.
-II line arrow cross-sectional view, Figure 3 is a perspective view of the safety cover, Figure 4 is a bottom view showing the installation state of the safety cover,
FIGS. 5 and 6 are bottom views showing other embodiments of the same safety cover in an installed state. 5'...Bearing part of the plane barrel, 7...Knob for rotating the plane barrel, 9...Bolt, 9a...
Bolt head, 10... Cover included, 13...
...Engagement piece.

Claims (1)

[Scope of utility model registration request] At the bearing part 5' of the plane body from which the plane body rotation knob 7 protrudes,
At least two or more bolts 9 are disposed protrudingly on both sides of the knob, while the force bar 10 has an arbitrary box shape, opens from the lower end to the back side, and engages on the left and right sides of the back side. A rotating plane body characterized in that pieces 13 and 13 are arranged side by side, and an engagement piece is engaged with the head 9a of the bolt to removably attach the cover. safety cover for the knob