JPH019964Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a packaging container for a cylindrical body such as a photosensitive drum installed in an electronic copying machine.

(b) Prior Art In a conventional packaging container, as shown in Utility Model Publication No. 43-19039, for example, a rectangular holder that holds both ends of the packaged object is fitted into the housing of the packaging container.
It could not rotate inside the casing.

Therefore, as shown in FIG. 2, the photosensitive drum 1 has a plurality of openings 2a on both end surfaces.
When a protrusion that can fit into the opening 2a is formed and the holder is used to sandwich the holder, the following problem occurs.

(c) Problems to be solved by the invention Namely, the openings 2a on the left end surface of the photosensitive drum 1 are arranged as shown in FIG. 3, and the openings 2b on the right end surface are arranged as shown in FIG.
... are arranged as shown in FIG. 4, the holders at both ends are twisted by 45 degrees with respect to the axis of the photosensitive drum 1. In this case, there is no problem if the holder is circular, but if the cross-sectional shape of the housing and the holder are square, the holder cannot rotate within the housing, so the photosensitive drum
cannot be properly stored in the packaging container.

Note that if the holders are circular, there is no problem no matter how twisted the holders are, but in this case, the holders act as wheels and the photoreceptor drum 1 rolls, damaging the precious and fragile surface of the photoreceptor. I was afraid.

(d) Means for solving the problems This invention is intended to solve the problems mentioned above.
A rectangular tube (housing) with a rectangular cross section into which a cylindrical body is inserted.
and a holder that is inserted into the rectangular tube together with the cylindrical body, the holder having a protrusion, an opening, or a recess that can be engaged with the opening, recess, or protrusion formed in a portion facing the end surface of the cylindrical body. The holder is provided with a short diameter part that is shorter than the inner short side of the square tube and longer than the diameter of the cylinder, and a longer diameter part that is longer than the inner short side of the square tube and shorter than the inner long side. The continuous portion is formed such that the holder can rotate within the rectangular tube by at least an angle of 1/2α about the axis of the cylindrical body.

(e) Effect Since the present invention is constructed as described above, the holder can rotate by 1/2α within the rectangular tube. Therefore, even if the pair of holders are twisted, they can be accommodated in the square tube.

Note that since the holder is non-circular, the cylindrical body will not roll even if it is taken out.

(F) Embodiment FIG. 1 is a longitudinal cross-sectional view, FIG. 5 is a cross-sectional view seen from the left, and FIG. 6 is a cross-sectional view seen from the right. In these figures, 3 is a rectangular tube with a rectangular cross section, 4 is a left holder, and 5 is a right holder. These holders 4 and 5 have protrusions 4a and 5a formed on their surfaces opposite to the end surface of the photoreceptor drum 1, corresponding to the openings 2a and 2b formed in the end surface of the photoreceptor drum 1. There is. The openings 2a and 2b in the end surface of the photoreceptor drum 1 are provided on a concentric circle at positions divided into four parts every 90 degrees with the axis of the photoreceptor drum 1 as the center. Therefore, each of the four protrusions 4a, 5a... of the holders 4, 5 also have openings 2a,
It is formed at a position corresponding to 2b...

Both holders 4 and 5 have a short diameter portion 4 that is shorter than the inner short side of the square tube 3 and longer than the outer diameter of the photoreceptor drum 1.
b, 5b, and long diameter portions 4c, 5c which are longer than the inner short side of the rectangular tube and shorter than the inner long side.
Then, the short diameter portions 4b, 5b and the long diameter portions 4c, 5
The continuous portions 4d, 5d, etc. of c have a linear shape, and the angle between the continuous portions 4d, 5d, and the center line of the long diameter portions 4c, 5c is 1/4 of 90 degrees, or 22.5 degrees.
In this way, if the angle between the continuous portions 4d, 5d... and the center lines of the major diameter portions 4c, 5c is 22.5 degrees, the holders 4, 5 can be rotated by 45 degrees within the rectangular tube 3. . Therefore, even if the openings 2a, 2b, .

In addition, since the openings 2a, 2b... are provided every 90 degrees on a concentric circle, the holders 4, 5 are attached to the rectangular tube 3.
It would be good if it could be rotated 45 degrees within. However, the opening 2a,
If 2b... is formed three times every 120 degrees,
The holders 4 and 5 must be configured to be able to rotate 60 degrees within the rectangular tube 3. In this case, the angle between the continuous portions 4d, 5d, . . . and the center lines of the longer diameter portions 4c, 5c is 1/4 of 120 degrees, or 30 degrees.

Further, the opening 2 is provided on the end surface of the photoreceptor drum 1.
Instead of a, 2b..., a recess may be formed, or a plurality of protrusions may be formed. However, if a protrusion is formed on the end surface of the photosensitive drum 1, the holders 4 and 5 need to have openings or recesses that can engage with the protrusion.

(g) Effects of the invention In this invention, the holder is configured to be able to rotate by an appropriate angle within the rectangular cylinder, so that the openings formed on both end faces of the cylinder are aligned with the axis of the cylinder. Even if the holder is twisted around the center, the holder can be rotated to correspond to the twist. Therefore, the cylindrical body and the holder can be properly housed within the rectangular tube.

In addition, since the holder is formed in a non-circular shape,
Even if the cylindrical body and its holder are placed on a slope, it will not roll.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention;
Figure 2 is a perspective view showing a photosensitive drum (cylindrical body);
Figure 3 is its left side view, Figure 4 is its right side view, and Figure 5 is its left side view.
The figure is a cross-sectional view of the embodiment seen from the left, and FIG. 6 is a cross-sectional view of the embodiment seen from the right. 1... Photosensitive drum (cylindrical body), 2a, 2b...
...Opening, 3... Square tube (housing), 4, 5... Holder,
4a, 5a...Protrusion, 4b, 5b...Short diameter part, 4
c, 5c... Long diameter portion, 4d, 5d... Continuous portion.

Claims (1)

[Claims for Utility Model Registration] 1. A cylindrical packaging container in which a plurality of openings, recesses, or protrusions are formed on the end face so that the angles between the centers are all equal angle α, wherein the cylindrical body is A rectangular tube with a rectangular cross section is inserted, and a protrusion, opening, or recess capable of engaging with the opening, recess, or protrusion is formed in a portion facing the end surface of the cylindrical body, and the cylindrical body is inserted into the rectangular tube together with the cylindrical body. The holder has a short diameter part that is shorter than the inner short side of the square tube and longer than the diameter of the cylinder, and a longer diameter part that is longer than the inner short side of the square tube and shorter than the inner long side. The connection part between the major diameter part and the minor diameter part is formed so that the holder forms an angle of at least 1/2α with respect to the axis of the cylindrical body within the rectangular tube.
A cylindrical packaging container that is formed so that it can be rotated. 2. The continuous part of the long diameter part and the short diameter part exhibits a straight line,
The cylindrical packaging container according to claim 1, wherein the angle between the continuous portion and the center line of the major diameter portion is 1/4α.