JP2532205Y2 - door - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a door body having a pair of opposing walls separated from each other by blow molding of a thermoplastic synthetic resin, and peripheral end walls thereof welded to each other to form a hollow portion, and the door body is opened and closed. The present invention relates to a door having a pivot shaft that freely pivots, and relates to a housing door of an electronic device, a door of a building, a door of furniture, and the like.

[0002]

2. Description of the Related Art Conventionally, as a door of this kind, for example, Japanese Utility Model Laid-Open No. 63-146091 or Japanese Utility Model Laid-Open No. 63-146 is known.
No. 072 is known. Japanese Unexamined Utility Model Publication No. 63-14091 discloses that the pivot shaft is blow-molded integrally with the door body. The pivot is made of a metal different from the door body.

[0003]

In the former case having the above structure, the pivot shaft projecting from the door body is blow-molded integrally with the door body.
The thickness of the pivot shaft portion becomes thinner, and the thickness of the pivot shaft portion becomes uneven, and the strength of the pivot shaft portion is impaired.

[0004] In the case of the latter conventional one, even though the strength of the pivot shaft itself is sufficient, a bracket, a bolt, a nut, and the like are required to attach it to the door body. There is a disadvantage that it is complicated and requires a large number of assembly steps.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem of the prior art, and a component for forming a pivot shaft is integrally formed on a door body to be blow-molded. By inserting and fixing a shaft body separate from the door main body to the component of the pivot shaft after blow molding, strength is not impaired as in the case where the pivot shaft is formed integrally with the door main body,
Moreover, it is an object of the present invention to provide a synthetic resin door having a simple structure and a high strength without having a complicated structure unlike a conventional one in which a shaft body is separated from a door body.

[0006]

Means for Solving the Problems The present invention is constituted as follows as technical means for achieving the object. That is, a door body having a pair of opposed walls separated by blow molding of a thermoplastic synthetic resin to form a hollow portion by welding the peripheral end walls to each other, and a pivot shaft for pivotally supporting the door body so that the door body can be opened and closed. In the door having the door main body, a cylindrical portion protruding outwardly is blow-molded integrally with the door main body, and the cylindrical portion is fixed by penetrating a longer shaft than the cylindrical portion. It is a door characterized by having done.

Also, a door body formed by blowing a thermoplastic synthetic resin to separate a pair of opposing walls and welding the peripheral end walls thereof to each other to form a hollow portion, and a pivot for pivotally supporting the door body in an openable and closable manner. In a door having a support shaft, a shaft holding wall protruding toward a hollow portion is formed in the door body, and a shaft body is inserted through the shaft holding wall of the door body so that an end of the shaft body extends outward of the door body. The door is characterized in that the portion is protruded and the protruding portion of the shaft is used as a pivot shaft.

[0008]

In the first structure, the cylindrical portion serving as the pivot is blow molded integrally with the door body. Thereafter, the shaft body is fixedly penetrating through the cylindrical portion. For this reason, the cylinder part penetrates it and is reinforced by the shaft supported by the shaft holding part, and a strong pivot shaft is formed in the door body.

[0009] In the second configuration,
The shaft holding wall is blow-molded integrally with the door body, and thereafter the shaft body is inserted and fixed to the shaft holding wall of the door body, and the end of the shaft body is configured to protrude outward from the door body. For this reason,
By the shaft body supported and fixed to the shaft holding wall, a strong pivot shaft is formed in the door body.

[0010]

Embodiment 1 FIG. 1 is a perspective view showing an embodiment of the present invention, 1 is a door body, and the door body 1 is formed by blow molding of a thermoplastic synthetic resin. The peripheral end walls 4 and 5 are welded to each other at a distance from each other to form a hollow portion 6.

That is, as shown in detail in FIG. 2, the door main body 1 has cylindrical portions 7,
7 are formed so as to protrude outward on a straight line, and shaft holding walls 8, 8 are formed in which one opposing wall 3 is depressed toward the hollow portion 6 to narrow the hollow portion 6. Numerals 9 and 9 denote shafts. The shafts 9 are formed by penetrating the respective cylindrical portions 7 and screwing and fixing the screw portions 9a at the tips to the shaft holding walls 8. And has a length that is sufficiently screwed into the shaft holding wall 8, and has a flange portion 10 that is in contact with the outer end surface of the cylindrical portion 7. In addition, the shaft body 9 may be a squeezing insertion instead of the screwing. Then, as described above, each of the cylindrical portions 7 penetrates and each of the shaft holding walls 8
Pivot shafts 11, 11 are formed by the cylindrical portions 7, 7 projecting from the upper and lower ends of the door body 1 by the respective shaft bodies 9 screwed into the door body 1.

By providing a gap between the cylindrical portion 7 and the shaft holding wall 8 by the hollow portion 6, the shaft 9 can be easily inserted, and the shaft center does not change.

The length of the shaft holding wall 8 is preferably set to 0.3 or less with respect to the length of the shaft body 9 inserted into the door body 1. Further, the pivot shaft according to the present invention may have two ends and only one end of the pivot shaft according to the present invention.

In the door configured as described above, the pivot shafts 11, 11 at the upper and lower ends of the door body 1 pass through the cylindrical portions 7, 7 integrated with the door body 1, and are integrated with the door body 1. Shaft holding wall 8,
The shafts 9, 9 arriving at 8 sufficiently reinforce the cylindrical portions 7, so that a door having strong pivot shafts 11, 11 is formed. And the pivot shafts 11, 11
Can be constituted by a simple process of simply inserting the shaft members 9 into the blow molded product.

FIG. 5 shows two doors constructed as described above.
The wash basin 12 provided with two is illustrated. The doors are denoted by reference numerals 13 and 13, and the doors 13 and 13 can be opened and closed right and left, respectively.

Embodiment 2 FIG. 3 is a perspective view showing another embodiment of the present invention. In another embodiment, as shown in detail in FIG. 4, one opposing wall 3 is depressed on one side of the door main body 1 toward the hollow portion 6, and the inner contour is slightly smaller than the shaft 9. The holding wall 8 is formed integrally at two locations at the upper part and two places at the lower part in a straight line with an interval therebetween. The structure is fixed.
The shaft body 9 has a length protruding from both upper and lower ends of the door body 1, and pivot portions 11, 11 are formed at portions protruding from both upper and lower ends of the door body 1.

According to the configuration as in the second embodiment,
The pivot shafts 11, 11 of the door body 1 are composed of a series of upper and lower shaft members 9, and the shaft members 9 are supported by a shaft holding wall 8 formed integrally with the door body 1, so that the pivot shafts 11, 11 are pivotally supported. Axis 11,
The strength of the shaft 11 is great, and in particular, the shaft shaft 11 is excellent in the function of maintaining the center of the shaft against a load deviating from the shaft 11. In the second embodiment, the shafts 9 are simply formed by simply inserting the shaft body 9 into the shaft holding wall 8, so that the processing steps are simple.

In the second embodiment, the shaft holding wall 8 is formed at four places, but the shaft holding wall 8 may be formed at one place.
However, from the viewpoint of stability of the shaft center and ease of insertion of the shaft body 9, it is preferable to provide two or more places.

[0019]

[Effects of the Invention] The present invention is configured as described above and has the following effects.

That is, a door main body having a pair of opposing walls separated from each other by blow molding of a thermoplastic synthetic resin and their peripheral end walls welded to each other to form a hollow portion, and a pivot for pivotally supporting the door main body to be opened and closed. In a door having a support shaft, an outwardly projecting tubular portion is blow-molded integrally with the door body on the door body, and a longer shaft is penetrated and fixed to the tubular portion, and the tubular portion is pivoted. Because it is a support shaft, the strength is not impaired as in the case where the pivot shaft is formed integrally with the door body, and if the configuration is complicated like the conventional one where the shaft body is separate from the door body. Instead, it is possible to obtain a synthetic resin door having a simple structure and a large strength.

Further, a shaft holding wall protruding toward the hollow portion is formed in the door body, and a shaft body is inserted through the shaft holding wall of the door body so that an end of the shaft body is outside the door body. Even when the shaft is made to protrude and the protruding portion of the shaft is used as a pivot shaft, the strength is not impaired similarly to the case where the pivot is formed integrally with the door body, and the shaft is separate from the door body. The structure is not complicated as in the prior art described above, and a synthetic resin door having a simple structure and high strength can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and also shows a shaft body.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

FIG. 3 is a perspective view showing another embodiment of the present invention, and also shows a shaft body.

FIG. 4 is an enlarged sectional view taken along line BB in FIG. 2;

FIG. 5 is a perspective view showing an example of a wash basin provided with a door according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door main body 2 A pair of opposing walls 3 A pair of opposing walls 4 Peripheral end wall 5 Peripheral end wall 6 Hollow part 7 Tubular part 8 Shaft holding wall 9 Shaft body 11 Pivot shaft

Claims (2)

(57) [Scope of request for utility model registration] 1. A door body having a pair of opposing walls separated from each other by blow molding of a thermoplastic synthetic resin and their peripheral end walls welded to each other to form a hollow portion, and a pivot for pivotally supporting the door body in an openable and closable manner. In a door having a support shaft, an outwardly projecting tubular portion is blow-molded integrally with the door body on the door body, and a longer shaft is penetrated and fixed to the tubular portion, and the tubular portion is pivoted. A door characterized by a support shaft. 2. A door body having a pair of opposing walls separated from each other by blow molding of a thermoplastic synthetic resin, and peripheral end walls thereof are welded to each other to form a hollow portion, and a pivot for pivotally supporting the door body in an openable and closable manner. In a door having a support shaft, a shaft holding wall protruding toward a hollow portion is formed in the door body, and a shaft body is inserted through the shaft holding wall of the door body so that an end of the shaft body extends outward of the door body. A door characterized in that a protruding part is protruded and a protruding part of the shaft is used as a pivot shaft.