JPH0445544Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The invention is a method of rotatably or immovably supporting other components on the top of a table or desk, various panels, case walls, etc. made of a hollow plastic body. This invention relates to a support structure for a hollow plastic body.

BACKGROUND ART Conventionally, for example, in a table or desk equipped with a hollow top plate made of hard plastic, a structure in which side plates or legs are axially supported on the top plate is as shown in FIG. Drill a shaft hole b in the side wall of the top plate a of the hollow body with a drill etc., and insert this shaft hole b.
As shown in Fig. 8, the shaft d of the side plate or leg c side is fitted into the shaft d, or the bearing fitting e is inserted during blow molding of the top plate a, and then the shaft hole b is drilled and the side plate or leg is inserted. There is one in which the shaft d on the body c side is fitted.

Problems that the invention aims to solve By the way, as shown in Fig. 7, the hollow top plate a with the shaft hole b has the disadvantage that the shaft support part has low strength and is inferior in durability. . Also, the 8th
In the case shown in the figure, since the shrinkage rate of the top plate a of the hollow body to be blow molded is higher than that of the bearing fitting e inserted during blow molding, the difference in shrinkage causes the plastic wall surrounding the bearing fitting to shrink. Cracks tend to occur around the shaft hole b of the part, and when drilling the shaft hole b with a drill during blow molding, cracks may occur due to heating due to friction with the drill bit and mechanical shock.
The plastic wall surrounding the bearing fitting e and the shaft hole b
Since cracks are more likely to form around the shaft, the strength of the shaft support is low and the durability is poor.

In view of the drawbacks of the conventional ones, the present invention has been developed to prevent cracks from occurring in the parts of the table top plate made of a hollow body that support other members such as side plates and legs, and to increase the strength of the shaft support parts. It is an object of the present invention to provide a support structure for a hollow plastic body that can be made high and have significantly improved durability.

Means for Solving the Problems In order to achieve the above object, the present invention is constructed as follows. That is, in the shaft support structure of a plastic hollow body such as a table top, a recessed part having two bent surfaces on the hollow side is formed in a part of the wall surface constituting the hollow body, and the bent two sides of the recessed part are
A supporting structure for a plastic hollow body is provided in which a surface is provided with an engaging portion for a shaft supporting member having a shape that is in contact with the surface, and the shaft supporting member is press-fitted between the engaging portions. It is something.

Effect: In the support structure for a plastic hollow body according to the present invention, a concave portion having two curved surfaces is formed on the hollow body side, and the shaft support member that is in contact with the surfaces of this concave portion is supported in a pinched state by the engaging portion. Therefore, the load is distributed between the concave portion on the hollow body side and the shaft support member, and cracks do not occur, and the strength of the shaft support portion is increased. Furthermore, since the shaft support member is simply pressed against the engaging portion, its attachment is simple.

Example An embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 6, reference numeral 1 denotes a table top plate, and this top plate 1 is made of a hollow plastic body. A top plate 1 made of a hollow plastic body has legs 2 supported by shafts on both sides thereof, thereby forming a table.

That is, in a part of the wall surface (back surface) constituting the top plate 1, a recessed part 3 is formed on the hollow part side,
This concave portion 3 has two bent surfaces having a substantially dogleg shape in cross section, and a shaft support member 4 is fixed to these two curved surfaces, and a leg The body 2 is supported axially.

An engaging protrusion 6 is formed on the horizontal surface 5 of the recessed portion 3, and a recessed portion 8 for engaging the corresponding surface of the shaft support member 4 is formed on the substantially vertical surface 7 of the recessed portion 3.
has a bent shape along the horizontal plane 5 and the substantially vertical plane 6 of the two bent surfaces, and the horizontal plane 5 of the shaft support member 4
A hole 1 to be engaged with the locking projection 6 is provided on the surface 9 corresponding to the
0, and a shaft hole 12 is provided in a surface 11 corresponding to the substantially vertical surface 7. Further, it is preferable to have a gap between the substantially vertical surface 7 and the corresponding surface 11 in terms of installation workability and strength. When manufacturing the top plate 1, the top plate 1 is first formed into one piece by Boo molding. Then, the shaft support member 4 is brought into contact with the engagement protrusion 6 on the horizontal surface side of the two bent surfaces of the recessed portion 3 of the top plate 1, so that the surface 9 is brought into contact with the hole 10, and then the other surface 11 The shaft is supported in the recess 3 of the top plate 1 by pressing the raised portion 11a with the pressing jig 15, slightly deforming the shaft support member 4, and engaging the recess 8 of the substantially vertical surface 7. The member 4 is engaged in a pinched state and is fixed. Shaft support member 4
A shaft 13 on the leg body 2 side is fitted into the shaft hole 12 of the
A leg body 2 is supported by a shaft on a top plate 1. Note that a hole 14 is drilled in the concave portion 3 of the top plate 1 in correspondence with the shaft hole 12 of the shaft support member 4, but this hole 14 is formed by drilling, etc. after the shaft support member 4 is engaged. It can be opened by any appropriate means.

In addition, in the above example, the shaft support member 4 of the recessed part 3
The configuration for engaging is based on the engagement protrusion 6 on one side and the recess 8 on the other side;
Further, both may be made into recessed portions, and the bent state of the recessed portion 3 may be any shape other than a substantially right angle shape. Alternatively, the shaft may be attached to the shaft support member 4 side,
It is also possible to form a thread on the bearing or shaft on the side of the wiper shaft support member 4.

According to the support structure for a plastic hollow body constructed as described above, the legs are supported by the shaft support member 4 which is supported by the two curved surfaces of the concave portion 3 of the top plate 1 made of the hollow body. Since body 2 is supported axially,
Unlike conventional structures that are supported only by the shaft, the load does not concentrate and cracks do not occur in the shaft support, and the mechanical strength is high, greatly improving durability. Furthermore, the shaft support member 4 can be securely fixed by simply engaging the engaging portion with pressure, and can be easily attached.

Effects of the Invention As described above, the present invention, in a shaft support structure for a plastic hollow body such as a table top, forms a recessed portion having two curved surfaces on the hollow side in a part of the wall surface constituting the hollow body. , the two bent surfaces of the concave portion are provided with an engaging portion of the shaft support member that is shaped to be in contact with the surface, and the shaft support member is press-fitted between the engaging portions; To prevent cracks from forming on the hollow table top plate, etc., where other members such as side plates and legs are supported by the shaft, and to increase the strength of the shaft support portion, thereby significantly improving durability. It has the effect that it can.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the present invention, with Figure 1 being a partially cutaway rear view of the main part of the table, and Figure 2 showing a shaft support member in the recessed part of the top plate. A partial cross-sectional view showing the manner of installation, Fig. 3 is a perspective view of the top plate as seen from the back side, Fig. 4 is a view taken in the direction of arrow A in Fig. 3, and Fig. 5 is a view taken in the direction of arrow B in the same way. , FIG. 6 is a perspective view of the shaft support member. FIGS. 7 and 8 are longitudinal sectional front views of the top plate of a table showing conventional examples, respectively. DESCRIPTION OF SYMBOLS 1... Top plate of hollow body, 2... Leg body, 3... Recessed part, 4... Shaft support member, 6... Engaging protrusion, 8...
Recessed portion, 10... hole, 12... shaft hole, 13... shaft.

Claims (1)

[Scope of utility model registration request] In a shaft support structure for a plastic hollow body such as a table top, a recessed portion having two bent surfaces on the hollow side is formed in a part of the wall surface constituting the hollow body, and the two bent surfaces of the recessed portion are 1. A support structure for a hollow plastic body, characterized in that an engaging portion of a shaft supporting member is provided in a shape that is in contact with the shaft supporting member, and the shaft supporting member is press-fitted between the engaging portions.