JP4713296B2 - Manufacturing method for plastic floor posts - Google Patents

Description

  The present invention is an improvement of a plastic floor post used as a building material. More specifically, the material used can be reduced without compromising strength, and can be easily assembled to reduce manufacturing costs. The present invention relates to a method for manufacturing a plastic floor post.

  As is well known, in recent floor construction, a floor is constructed using a height-adjustable floor bundle (floor post) that uses an adjust bolt mechanism to minimize the woodworking work such as bundling at the site. Construction methods are becoming more popular.

  Accordingly, the applicant of the present application has also developed a building floor post and disclosed that it is made of plastic as a material to be used because it is excellent in moldability (see, for example, Patent Document 1). ).

  By the way, in such a plastic floor post, it is necessary to take measures to reduce the material used or reduce the weight in order to reduce the product cost as much as possible.

  Here, as an example of a conventional floor post, first, as shown in FIG. 9, a top plate member T in which a nut member is integrally formed on the back surface and a base member B integrally provided with a bolt member V. There is something configured.

  However, in order to mold the nut portion n on the top plate member T, there is a problem that the structure of the mold becomes complicated and expensive, and the manufacturing cost is increased. In addition, since it takes time to assemble these separate parts at the construction site, there is a complaint that bothering the hands of craftsmen. Furthermore, when the length of the bolt member V is not sufficient and the total length is low, there is a problem that the range in which the height can be adjusted cannot be increased.

  On the other hand, as shown in FIG. 10, when the top plate member T and the bolt portion v are integrally formed, the rib shape formed on the bolt portion v on the back surface of the top plate member T is: There is a problem that it is possible to design only a slidable shape when removing from the mold.

Further, at this time, the bolt portion v is hollow molded, but the mold inserted into the hollow portion may be vibrated by the injection pressure, so that the designable length is limited. There's a problem.
Japanese Patent Laying-Open No. 2003-74171 (page 3-4, FIG. 1)

  The present invention has been made in view of the above-mentioned problems in conventional plastic floor posts, the purpose of which can reduce the material used without losing strength, And it is providing the manufacturing method of the plastic floor post which can be assembled easily and can reduce manufacturing cost.

  Means employed by the present inventor for solving the above technical problem will be described with reference to the accompanying drawings.

That is, the present invention is provided with a floor receiving top plate 1 for supporting and fixing a floor material at the upper end, and by rotating a screw rod 2 screwed into a base member 3 disposed at the lower end in the forward and reverse directions. In making a plastic floor post that can be adjusted up and down,
A substantially circular guide convex wall 12 protrudes from the lower surface of the floor receiving top plate 1 to form a welded portion 11 on the inner side thereof, and the weld surface of the welded portion 11 has a built-up welding allowance. 15 is formed, and at least a plurality of anchor holes 13, 13... Are formed around the fusion allowance 15, and a recessed portion 14 is formed at substantially the center of the weld portion 11,
It is a rod-shaped plastic hollow molded body made of the same thermoplastic resin material as the floor receiving top plate 1, and is fixed to the outer peripheral edge of the base end portion of the screw rod 2 with the screw screw 22 formed on the outer periphery. While molding the edge 21,
The fastening convex edge 21 is in contact with the joining surface of the welded portion 11 of the floor receiving plate 1 with the guide convex wall 12 inscribed, and the fastening convex edge 21 of the screw rod 2 is welded by the welding means P. And the welding part 11 and the melting allowance 15 are heated and melted together, and these molten plastics are caused to flow into the anchor hole 13,
After that, the technical means of joining and integrating the floor receiving top plate 1 and the screw rod 2 made of the same thermoplastic resin material by curing the molten plastic flowed in was adopted.

  Further, in order to solve the above-mentioned problems, the present invention adds a welding allowance 15 to the circumference of the recessed portion 14 at the center of the welded portion 11 in the floor receiving top plate 1 in addition to the above means as necessary. It is possible to adopt a technical means that allows melting along the end face of the proximal end portion of the screw rod 2 that is formed into a shape and abuts.

  Furthermore, in order to solve the above-mentioned problems, the present invention provides at least a plurality of fastening convex edges 21, 21... Radially on the outer peripheral edge of the base end portion of the screw rod 2 in addition to the above means as necessary. The technical means is adopted in which the fixing convex edges 21, 21... Are in contact with the joint surface of the welded portion 11 of the floor receiving top plate 1 in a state where the fixing convex edges 21, 21. be able to.

  Furthermore, in order to solve the above-mentioned problems, the present invention forms the fastening convex edge 21 of the screw rod 2 into a substantially disc shape in addition to the above means as necessary. It is possible to employ a technical means that abuts on the joint surface of the welded portion 11 of the floor receiving top plate 1 in a state in which the guide convex wall 12 is inscribed.

  Furthermore, in order to solve the above-described problems, the present invention employs technical means for forming an anchor hole 21a in the joint surface of the fastening convex edge 21 of the screw rod 2 in addition to the above means as necessary. be able to.

  Furthermore, in order to solve the above-described problems, the present invention provides an ultrasonic welding machine, a heat sealing machine, a high frequency welding machine, a heat press machine, a friction welding machine, as a welding means P in addition to the above means as necessary. A technical means of employing any one of solvent coating can be employed.

  In the present invention, a substantially circular guide convex wall is projected on the lower surface of the floor receiving top plate, a welded portion is formed in the inner area thereof, and at least a plurality of joint surfaces of the welded portion are formed on the joint surface. An anchor hole is formed at the center of the welded portion, and a concave notch is formed in the approximate center of the welded portion. On the other hand, a rod-shaped plastic hollow molded body is formed on the outer periphery of a screw rod having a screw screw formed on the outer periphery. A fastening convex edge is formed on the peripheral edge, and the fastening convex edge is in contact with the joint surface of the welded portion of the floor receiving top plate in a state where the fastening convex edge is inscribed in the guide convex wall, and the screw is made by the welding means. The fixing edge of the rod and the welded part of the rod are heated and melted together, the molten plastic is allowed to flow into the anchor hole, and then the molten plastic that has flowed is cured to join the floor receiving top plate and the screw rod. Integration Rukoto can.

  Thus, since each component can be individually molded, there is no need for a complicated mold structure, and the cost can be reduced. It is also suitable for assembly by welding integration. Furthermore, by forming the anchor hole on the surface to be welded, the molten plastic that has flowed in can be hardened in the anchor hole and fixed to the reinforcement.

  In addition, by producing the guide convex wall, the center of the floor support plate and the center of the screw rod can be aligned, so that not only the manufacturing accuracy is improved, but also the manufactured floor post is supported. The load can be received uniformly around the center.

  In this way, on the back surface of the floor receiving top plate, material reduction and weight reduction processing can be performed by stealing meat such as anchor holes and recesses, and it can be easily assembled to reduce manufacturing costs. Therefore, it can be said that the industrial utility value is very large.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described in more detail with reference to the drawings specifically shown as follows.

  An embodiment of the present invention will be described with reference to FIGS. In the figure, what is indicated by reference numeral 1 is a floor receiving top plate, what is indicated by reference numeral 2 is a screw rod, and what is indicated by reference numeral 3 is a base member.

  Thus, the plastic floor post in the present embodiment has a floor receiving top plate 1 that supports and fixes the floor material at the upper end, and a screw rod 2 that is screwed into the base member 3 disposed at the lower end. It is an instrument that can adjust the level of the floor material up and down by rotating it (see FIG. 1).

  In producing the floor post of the present embodiment, first, a substantially circular guide convex wall 12 is projected on the lower surface of the floor receiving top plate 1, and a welded portion 11 is formed in the inner area thereof. In addition, at least a plurality of anchor holes 13, 13... Are formed on the joint surface of the welded portion 11, and a recessed portion 14 is formed at the approximate center of the welded portion 11 (see FIG. 2).

  Thus, the material used can be reduced by forming the anchor hole 13 and the recess 14.

  Next, a screw rod 2 which is a rod-shaped plastic hollow molded body and has a screw screw 22 formed on the outer periphery is produced. A fastening convex edge 21 is formed on the outer peripheral edge of the base end portion of the screw rod 2. In the present embodiment, as shown in the drawing, at least a plurality of (for example, five) fastening convex edges 21, 21... Can be radially formed. At this time, it is more preferable to arrange the fixing convex edges 21 at equal intervals since stability can be imparted.

  In the present embodiment, the floor receiving top plate 1, the screw rod 2, and the base member 3 are produced by a known injection molding method using polypropylene (PP) as a material used.

  .. Are brought into contact with the joint surface of the welded portion 11 of the floor receiving top plate 1 in a state in which they are inscribed in the guide convex wall 12. At this time, by making the guide convex wall 12 into a substantially circular shape, even if the screw rod 2 is slightly rotated, the outer edge portion of the fixing convex edge 21 is securely latched. The center of the floor receiving top plate 1 and the center of the screw rod 2 can coincide with each other.

  Next, the fixing convex edge 21 and the welding portion 11 of the screw rod 2 are heated and melted to each other by the welding means P (see FIG. 3), and the molten plastic is caused to flow into the anchor hole 13.

  As this welding means P, an ultrasonic welding machine can be adopted, but in addition, a heat sealing machine, a high frequency welding machine, a heat press machine, a friction welding machine, solvent application, etc. can also be adopted.

  Thereafter, the molten plastic between the fastening convex edge 21 of the screw rod 2 and the welded portion 11 of the floor receiving top plate 1 flows into the anchor hole 13 and hardens it, whereby the floor receiving top plate 1 and The screw rod 2 can be joined and integrated (see FIGS. 4 and 5).

  In the present embodiment, a weld allowance 15 having a built-up shape can be formed on the joint surface of the welded portion 11 of the floor support top plate 1, and at least a plurality of the allowances 15 are formed around the melt allowance 15 as described above. .. Are formed.

  Then, as described above, when heat welding is performed by the welding means P, the portion of the welding allowance 15 is melted, and this molten plastic can be caused to flow into the anchor hole 13, so that the anchor effect can be improved. it can.

  Further, if necessary, an anchor hole 21a can be formed on the joint surface of the fastening convex edge 21 of the screw rod 2, and molten plastic is allowed to flow into the anchor hole 21a to be cured. Therefore, it is possible to more reliably join and integrate.

  Furthermore, the welding allowance 15 can be formed in a substantially circumferential shape around the recessed portion 14 in the center of the welded portion 11 in the floor receiving top plate 1, and is formed on the end surface of the proximal end portion of the screw rod 2 that abuts. It is also possible to melt along the melt, and the melted plastic of the melt allowance 15 can be welded over the entire circumference of the base end portion and can be more firmly fixed.

  The floor post completed as described above can reduce the material used without compromising strength, and can be easily assembled, thus realizing reduction in manufacturing cost and weight reduction. (See FIG. 6). The screw rod 2 can be appropriately provided with a stopper 23 for fixing to the base member 3.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims. For example, a screw rod As shown in FIG. 7, the shape of the fastening convex edge 21 can be formed into a substantially disk shape, and the number of the fastening convex edges 21 can be appropriately changed in design. Can do.

  Further, the shape of the floor support top plate 1 is not limited to a circular shape, but can be changed to a rectangular shape as shown in FIG. 8 or a polygonal shape. Furthermore, the material used for the floor receiving top plate 1 and / or the screw rod 2 and the base member 3 is not limited to polypropylene (PP), but employs a thermoplastic resin such as polyethylene (PE), polyethylene terephthalate (PET), or vinyl chloride. Any of these are within the technical scope of the present invention.

It is a disassembled perspective view showing the floor post of the embodiment of the present invention. It is explanatory sectional drawing showing the floor receiving top plate of embodiment of this invention. It is a perspective view showing the process of welding the floor receiving top plate and screw rod of embodiment of this invention. It is a perspective view showing the state which welded the floor receiving top plate and screw rod of embodiment of this invention. It is explanatory sectional drawing showing the state which welded the floor receiving top plate and screw rod of embodiment of this invention. It is a whole perspective view showing the floor post of the embodiment of the present invention. It is a whole perspective view showing the modification of the floor post of embodiment of this invention. It is a whole perspective view showing the modification of the floor post of embodiment of this invention. It is a perspective view showing the conventional floor post. It is a perspective view showing the conventional floor post.

1 Floor receiving top plate
11 Welded part
12 Guide convex wall
13 Anchor hole
14 Notch
15 Melting allowance 2 Screw rod
21 Fastening edge
21a Anchor hole
22 screw screw
23 Stopper 3 Base member P Welding means T Top plate member n Nut part v Bolt part V Bolt member B Base member

Claims (6)

The floor receiving top plate 1 for supporting and fixing the floor material is provided at the upper end, and the level of the floor material can be adjusted up and down by rotating the screw rod 2 screwed into the base member 3 disposed at the lower end forward and backward. In making a plastic floor post,
A substantially circular guide convex wall 12 protrudes from the lower surface of the floor receiving top plate 1 to form a welded portion 11 on the inner side thereof, and the weld surface of the welded portion 11 has a built-up welding allowance. 15 is formed, and at least a plurality of anchor holes 13, 13... Are formed around the fusion allowance 15, and a recessed portion 14 is formed at substantially the center of the weld portion 11,
It is a rod-shaped plastic hollow molded body made of the same thermoplastic resin material as the floor receiving top plate 1, and is fixed to the outer peripheral edge of the base end portion of the screw rod 2 with the screw screw 22 formed on the outer periphery. While molding the edge 21,
The fastening convex edge 21 is in contact with the joining surface of the welded portion 11 of the floor receiving plate 1 with the guide convex wall 12 inscribed, and the fastening convex edge 21 of the screw rod 2 is welded by the welding means P. And the welding part 11 and the melting allowance 15 are heated and melted together, and these molten plastics are caused to flow into the anchor hole 13,
Thereafter, the molten plastic flowed in is cured, whereby the floor receiving top plate 1 and the screw rod 2 made of the same thermoplastic resin material are joined and integrated, and a method for manufacturing a plastic floor post is provided. . A welding allowance 15 is formed in a substantially circumferential shape around the recessed portion 14 at the center of the welded portion 11 of the floor receiving top plate 1 so that it can be melted along the end face of the proximal end portion of the screw rod 2 that abuts. The method for producing a plastic floor post according to claim 1 . .. Are formed radially on the outer peripheral edge of the base end portion of the screw rod 2, and these fastening convex edges 21, 21... Are inscribed in the guide convex wall 12. 3. The method for manufacturing a plastic floor post according to claim 1, wherein the floor receiving top plate is brought into contact with the joint surface of the welded portion in a state where the floor receiving top plate is in contact. The fastening convex edge 21 of the screw rod 2 is formed in a substantially disc shape, and the joining surface of the welded portion 11 of the floor receiving top plate 1 in a state where the fastening convex edge 21 is inscribed in the guide convex wall 12. according to claim 1 or 2 method for producing a plastic floor posts, wherein the abutting the. The method for manufacturing a plastic floor post according to any one of claims 1 to 4 , wherein an anchor hole (21a) is formed on the joint surface of the fastening convex edge (21) of the screw rod (2). As welding means P, ultrasonic welding machine, heat sealing machine, high-frequency welder, heat press machine, friction welding machine, any one of claims 1-5, characterized in adopting any of the solvent coating The manufacturing method of the plastic floor post as described in one.

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