JPH0719296Y2 - Support structure for rotating storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a support structure for a rotary housing.

[Prior Art] Conventionally, a support structure for a rotary storage body 1 made of a synthetic resin such as a tray has a through hole 2 vertically formed at an end of the rotary storage body 1 as shown in FIG. The support shaft 3 was inserted into the through hole 2 and the rotary housing 1 was attached to the support shaft 3 so as to be horizontally rotatable. Also, the support shaft 3
On the other hand, when the rotary housings 1 are attached in the upper and lower stages, the washer 6 inserted through the support shaft 3 is located between the upper and lower rotary housings 1. And the rotary storage body 1
Is integrally molded in a state in which the through hole 2 is provided with resin by the molding die 5 formed by the upper die 5a and the lower die 5b as shown in FIG. 7, that is, the upper die 5a. Is provided with a through hole forming shaft 5c having a diameter slightly larger than the diameter of the support shaft 3 to be inserted into the through hole 2, and the resin is poured between the upper mold 5a and the lower mold 5b to form the through hole 2. Rotation storage body 1 in the installed state
Was to be molded.

[Problems to be Solved by the Invention] However, when the rotary housing 1 is molded by the molding die 5 as described above, the through hole forming shaft 5c formed in the upper die 5a is heated during the molding of the rotary housing 1. Since it is harder to cool than the other parts of the upper mold 5a and the lower mold 5b, the through hole 2 of the molded rotary storage body 1 is deformed into a swelled state at its center as shown in FIG. In particular, when the through hole 2 is long, the deformation is large, so that there is a problem that the support shaft 3 cannot be inserted or the rotation is not smooth. Therefore, it is conceivable to predict the deformation amount of the through hole 2 after molding in advance and make the central portion of the through hole forming shaft 5c a large diameter.
High dimensional accuracy is required in the central portion of the through hole forming shaft 5c, which is difficult, and if the inside of the through hole 2 is deformed even slightly, the inner surface of the through hole 2 of the support shaft 3 may be damaged. There was a problem that the contact was non-uniform and it did not rotate smoothly.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a support structure for a rotary housing that can smoothly rotate with respect to a support shaft.

[Means for Solving the Problems] In order to achieve the above object, the support structure for a rotary housing according to the present invention is provided with a through hole 2 vertically penetrating one end of the rotary housing 1, and the through hole 2 is formed. In the support structure of the rotary storage body in which the support shaft 3 is inserted into and the rotary storage body 1 is attached to the support shaft 3 so as to be horizontally rotatable with respect to the support shaft 3, the diameters of the through holes 2 are continuously integrated in the vertical direction. The diameter of the supporting shaft 3 is considerably larger than that of the supporting shaft 3, and the bushes 4 are arranged on the upper and lower portions of the through hole 2, respectively. Is attached to the support shaft 3 so as to be horizontally rotatable.

[Operation] When the rotary storage body 1 is rotated, the bush 4 is slidably rotated with respect to the support shaft 3, so that the bush 4 can be smoothly rotated.

[Embodiment] The rotary housing 1 made of synthetic resin is formed in the shape of a receiving box such as a tray having an open upper surface, and a thick portion 1a is formed on one end side, and the thick portion 1a is formed. A support shaft 3 is inserted into the vertically extending through hole 2 and is attached to the support shaft 3 so as to be horizontally rotatable. This rotating housing 1 is an upper mold
5a and the lower mold 5b are integrally formed by a molding die 5, and the through hole 2 is formed by a through hole forming shaft 5c provided in the upper mold 5a. The diameter is considerably larger than the diameter of 3. For attachment to the support shaft 3, bushes 4 are provided at the upper part and the lower part of the through hole 2, respectively.
The rotary housing 1 is horizontally rotatably attached to the support shaft 3 by inserting the support shaft 3 into the through hole 4a. In other words, the rotary housing 1 has the upper and lower ends of the through holes 2 supported by the bushes 4, and the rotation can be performed through the through holes 4a of the bushes 4, and the upper die of the molding die 5 is rotated.
When the through hole 2 is formed by the through hole forming shaft 5c provided in 5a, even if the central portion of the through hole 2 swells and is deformed after molding, the rotary housing 1 is supported by the bush 4 and the bush 4 passes through. Since the support shaft 3 does not come into contact with the inner surface of the through hole 2 by rotating through the hole 4a, the rotary housing 1 can be smoothly rotated through the bush 4. There is. The bush 4 is formed in a tubular shape, and a flange piece 4b is provided laterally on either one of the upper and lower ends to project laterally.
The bush 4 is attached to the upper and lower sides of the through hole 2 so that the other end of the bush 4 is fitted into a bush mounting recess 2a formed in the through hole 2. At this time, the flange piece
2a is attached with the outside protruding slightly,
By mounting so as to project in this manner, the flange piece 2a can also serve as a washer when the rotary storage body 1 is mounted on the support shaft 3 in a vertically multi-stage manner. At this time, the bush 4 may be directly fitted into the bush mounting recess 2a as described above. However, as shown in FIGS. 3 and 4, a concave groove 2b is provided on the inner surface of the bush mounting recess 2a. So that this groove
The ridge 4c protruding from the outer surface of the bush 4 may be fitted into the 2b so as to be fitted thereto. In this case, the bush 4 can be prevented from sliding on the bush mounting recess 2a due to the rotation of the rotary housing 1, and the bush 4 can be prevented from coming off the bush mounting recess 2a. Is something that can be done.

In the illustrated embodiment, the case of the receiving box-shaped rotary storage body 1 is shown, but the present invention is not limited to this and may be a long one such as a rod or another shape.

[Effects of the Invention] As described above, the present invention has a through hole with a diameter considerably larger than the diameter of a support shaft that is continuously integrated in the vertical direction, and bushes are provided above and below the through hole. Is installed,
Since the above support shaft is inserted into each bush and the upper and lower parts of the through hole are horizontally rotatably attached to the support shaft, the upper and lower parts of the through hole can be attached to the support shaft which is continuously integrated in the vertical direction. The rotary storage body is supported so that it can be horizontally rotated stably without tilting, and the horizontal rotation of the rotary storage body is performed via a bush, so that the rotation storage body can be smoothly rotated. Even if the through hole is formed by integral molding using a molding die or the like and the inner surface of the through hole is deformed, the rotary housing is attached to the support shaft via the bush. Since the support shaft is not in direct contact with the inner surface of the through hole, the support shaft can be smoothly rotated with respect to the support shaft via the bush.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view showing a mounting state of an embodiment of the present invention, FIG. 2 is a partially enlarged perspective view of the same as above, and FIG. 3 is an exploded perspective view showing another bush mounting state. Is an enlarged plan view of a portion of the bush mounting recess, FIG. 5 is a perspective view showing the state of mounting the rotary housing on the support shaft of the conventional example, FIG. 6 is a sectional view showing the state of mounting the same, and FIG. FIG. 8 is a partially enlarged cross-sectional view of the mold, and FIG. 8 is a partially enlarged cross-sectional view of the rotary housing after molding of the conventional example, in which 1 is a rotary housing, 2 is a through hole, 3 is a support shaft, and 4 is a bush. is there.

Claims (1)

[Scope of utility model registration request] 1. A rotary storage in which a through hole is formed at one end side of the rotary storage body so as to vertically penetrate therethrough, and a support shaft is inserted into the through hole so that the rotary storage body is horizontally rotatable relative to the support shaft. In the body support structure, the diameter of the through hole is set to be a large diameter that is considerably larger than the diameter of the support shaft that is continuously integrated in the vertical direction.
A support structure for a rotary storage body, in which bushes are respectively arranged above and below the through holes, and the support shafts are inserted into the bushes, and the upper and lower parts of the through holes are horizontally rotatably attached to the support shafts.