JP2540218B2 - Synthetic resin window frame and manufacturing method thereof - Google Patents

Description

The present invention relates to a synthetic resin window frame and a manufacturing method thereof,
In particular, the present invention relates to a window frame technology in which four sides are formed by fusing the ends of a plurality of rod-shaped frame members having a cover sheet adhered to their surfaces in a butted state.

"Prior art" Window frames made of synthetic resin such as polyvinyl chloride are cheaper than metal window frames and have excellent heat insulation properties and are difficult to condense. Since it is inferior in heat resistance and heat resistance, it is likely to be limited to indoor use,
Also, it is easy to be inferior in terms of design.

Therefore, on the surface of the window frame, a covering sheet made of acrylic resin or the like having excellent weather resistance and heat resistance, or a covering sheet for decoration with wood grain printing or the like is attached to protect it from the sunlight or heat, or It is considered to improve the design. In this case, generally, the four sides of the window frame are constituted by a rod-shaped frame material manufactured by extrusion molding, a covering sheet is pasted on the rod-shaped frame material, and the rod-shaped frame materials are joined to each other to form a window. It is configured as a frame.

[Problems to be Solved by the Invention] However, in the case of joining the rod-shaped frame members by butt fusion welding, a phenomenon in which the molten resin rises on the surface of the rod-shaped frame member 1 as shown in FIG. Occurs. Therefore, it is necessary to grind the raised portion X, but the covering sheet 2 is also ground together, so that the main body of the rod-shaped frame member 1 is exposed as shown in FIG. 4 (b). Occurs.

MEANS TO SOLVE THE PROBLEM This invention solves the said subject effectively, provides the synthetic resin window frame which joined | bonded the rod-shaped frame material without spoiling a covering sheet, and aimed at the protection of it, the improvement of designability, etc., and its manufacturing method. The purpose is to

"Means for Solving the Problem" The synthetic resin window frame according to claim 1 is characterized in that at least the pasting portion of the covering sheet is a non-fusing portion.

The manufacturing method according to claim 2, wherein the butt end surfaces of the rod-shaped frame members are formed with escape portions that make the affixed portions of the covering sheet in a non-contact state when they are abutted, and the butt portions avoiding the escape portions. The end faces of the relief portions are brought into a butted state by fusing the portions while pressing them in the butting direction.

"Operation" In the synthetic resin window frame according to claim 1, since the sticking portion of the covering sheet is a non-fusing portion, the synthetic resin is not melted in the vicinity of the sticking portion. There is no phenomenon of excitement.

In the manufacturing method according to claim 2, since the other portion is fused by using the sticking portion of the covering sheet as the relief portion, the resin of the fused portion is crushed by the pressing force at the time of fusion and the end faces of the relief portion are mutually crossed. Is in a butt state, and the resin does not melt in the escape portion, so that the molten resin is prevented from protruding from the butt surface.

[Examples] Examples of a synthetic resin window frame and a method for manufacturing the same of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show an embodiment, and as shown in FIG. 2, the synthetic resin window frame 11 of this embodiment is a white polyvinyl chloride that easily reflects light and heat. It is composed of a frame body 12 formed by the above, and a seal member 14 for sealing between the frame body 12 and the window plate 13. Also, the frame body
The reference numeral 12 has a configuration in which a window plate mounting recess 17 is formed between the main frame 15 and the pressing frame 16, and the ends of the rod-shaped frame members constituting the four sides are joined by heat fusion to manufacture them respectively. To be done.

The main frame 15 is a set of front plates 18A and 18B exposed on the outer surface (both indoor and outdoor) when incorporated in a building such as a house.
Is integrated by a reinforcing portion 19 such as a plurality of ribs, and in the illustrated example, each front plate 18A, 18B has a convex bent portion (so-called projecting corner) 20 in which the outer surface is in a protruding state, and the outer surface enters. A concave bent portion (so-called entry corner) 21 is provided.

The holding frame 16 is provided so as to face one side of the main frame 15 via the window plate mounting recess 17 and has a projection 23 in a groove 22 formed along the length direction of the main frame 15. It is incorporated in the main frame 15 by being engaged. Also, this presser frame 16
The outer surface plate 18 of the main frame 15 when attached to the main frame 15.
A front plate 18C that is continuous with A is provided.

And, the front plates 18A.1 of the main frame 15 and the presser frame 16
A cover sheet 24A made of acrylic resin or the like is attached to the surface of the front plate 18A / 18C out of 8B / 18C that is placed outdoors, and is also placed facing indoors for protection from light and heat. A cover sheet 24B for decoration, which has been subjected to decorative processing such as printing or coloring of wood grain or bronze, is attached to the surface of the front plate 18B. In this case, the cover sheet 24A, 24B and the surface-adjacent layer of the front plate 18A, 18B, 18C, which is the affixed part thereof, are the non-fusing parts 25 shown in FIG. Near the back surface of 18A, 18B, and 18C and the reinforcing portion 19
Is a fusion-bonding portion 26.

Incidentally, a seal member mounting groove 27 is formed along the length direction on the opposing surfaces of the main frame 15 and the pressing frame 16, and the seal member 14 is fitted in a state in which the protrusion 28 is fitted in the seal member mounting groove 27.
Has been fixed.

Next, a method for manufacturing the window frame 11 configured as described above will be described.

First, each bar-shaped frame material forming the main frame 15 and the press frame 16 is formed by extrusion molding, and these front plates 18A, 18B, 18
Attach the covering sheets 24A and 24B to C. Then, the end portions of these rod-shaped frame members are cut at an angle of 45 °, and the outer surface portion is cut while leaving the vicinity of the back surface of the cut end surfaces of the front plates 18A, 18B, and 18C. As shown in (a), a relief portion 29 is formed which is recessed from other portions (only the front plate of the rod-shaped frame member is shown in FIG. 1 and FIG. 3 described later). In other words, front plate 18A ・ 1
Protrusion 3 similar to the root of the weld groove on the back side of 8B and 18C
It forms 0. In addition, the reinforcing portion 1
When the end surface of 9 is exposed, the end surface of the reinforcing portion 19 is a front plate 18A.
・ Make flush with the protruding parts 30 of 18B and 18C.

Next, the end faces of the protruding portion 30 and the reinforcing portion 19 on the cut end face of each rod-shaped frame member are butted and joined by heat fusion.
As the heat fusion method, for example, a heating plate H is interposed between the both protruding portions 30 and the reinforcing portion 19 as shown by a chain line in FIG. There is a method of removing the plate H and abutting them. At this time, a constant pressing force is applied in the butting direction, and the resin of the melted projecting portion 30 is crushed to bring the end surfaces of the escape portions 29 into the butted state. In this case, the crushed resin is in a state of abutting between the end faces of the escape portion 29, so that the front plate 18A, 18B, 18C on the opposite side of the escape portion 29 is in contact with each other as shown in FIG. 1 (b). It rises on the back side.

Therefore, the rising portion of the molten resin does not occur on the outer surface of the front plate 18A, 18B, 18C, and the cover sheet 24A
-The 24Bs are abutted flush with the surface of the front plates 18A, 18B, and 18C to enhance the design. Further, since the back surfaces of the front plates 18A, 18B, and 18C are completely fused to each other, good waterproofness can be exhibited even when used in a location exposed to rainwater or the like. On the other hand, since only the outer surface side of the front plate 18A, 18B, 18C is the non-fusing part 25, the front plate 18A, 18B, 18C
The necessary strength can be maintained by the back surface portion and the fusion-bonded portion 26 in the reinforcing portion 19.

On the other hand, in one embodiment, the escape portion 29 and the protruding portion 30 are formed in a part of the wall thickness of the front plate 18A, 18B, 18C, but when the waterproof requirement is small or other means are used to ensure the waterproofness. If possible, as shown in FIG. 3, front plates 18A, 18B,
Relief part 2 in which the entire end face of 18C is recessed from the end face of the reinforcing part 19.
Alternatively, the end surface of the reinforcing portion 19 may be used as the protruding portion 30, and only the reinforcing portion 19 may be fused. In this case, if waterproofness is required, the relief part 29 of the front plate 18A, 18B, 18C
It is also possible to apply an adhesive agent to the end faces of the above in advance and to bond the front plates 18A, 18B, and 18C by fusing the reinforcing portions 19. With the structure shown in FIG. 3, the relief portion 29 does not interfere even if it reaches a part of the reinforcing portion 19, so that the cutting process thereof becomes easy.

"Effects of the Invention" As is clear from the above description, according to the synthetic resin window frame and the manufacturing method thereof, the following effects can be achieved.

(I) In the window frame according to claim 1, since the sticking portion of the covering sheet is a non-fusing portion and the synthetic resin is not melted, the rising portion of the covering sheet is prevented from occurring, and the surface of the covering sheet is prevented. It can be finished flush.

(Ii) In the manufacturing method according to the second aspect, since fusion does not occur in the relief portion, the phenomenon of the molten resin squeezing out does not occur, and the end faces of the relief portion are brought into abutting state while crushing the resin in the fusion portion. Therefore, the surface of the cover sheet can be finished flush.

(Iii) According to the above, it is possible to join the rod-shaped frame members without damaging the cover sheet, to effectively protect the rod-shaped frame members with the cover sheet, and to provide a window frame excellent in design.

[Brief description of drawings]

1 and 2 show an embodiment of a window frame according to the present invention. FIG. 1 (a) is a cross-sectional view of a joint end of a rod-shaped frame member before fusion, and FIG. 1 (b) is Sectional view after fusion, FIG. 2 is a perspective view with a part in section showing the overall configuration, and FIG. 3 is a cross-sectional view of the joining end of a rod-shaped frame material before fusion showing another embodiment of the present invention. 4 (a) and 4 (b) are shown in FIG. 1 (a) in the prior art.
(B) It is a similar sectional view. 11 …… Synthetic resin window frame, 12 …… Frame body, 13 …… Window plate, 14
...... Seal member, 15 …… Main frame, 16 …… Presser frame, 17 …… Window plate mounting recess, 18A ・ 18B ・ 18C …… Front plate, 19 …… Reinforcing part, 20 …… Convex bending part, 21 ...... Concave bent part, 22 ...... groove,
23 ... Protrusion, 24A / 24B ... Covering sheet, 25 ... Non-fusing part, 26 ... Fusing part, 27 ... Seal member mounting groove, 28 ...
… Protrusion, 29 …… Relief part, 30 …… Projection part, 31 …… Concave part.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location // B29L 9:00 31:10

Claims (2)

(57) [Claims] 1. A window frame in which a plurality of synthetic resin rod-shaped frame members integrally formed with a back surface of a front plate having a cover sheet adhered on the front surface are fused together in an abutting state. A window frame made of synthetic resin, characterized in that at least a pasting portion of the covering sheet is a non-fusing portion. 2. A window frame produced by fusing end portions of a plurality of synthetic resin rod-shaped frame members, which are integrally formed with a back surface of a front plate having a cover sheet adhered to the front surface, in a butted state. The butt portion of the rod-shaped frame member is formed with a relief portion that makes the affixed portions of the covering sheet in a non-contact state when they are butted, and the butt portion avoids the relief portion. A method for manufacturing a synthetic resin window frame, characterized in that the end faces of the escape portions are brought into a butted state by fusing while pressing in the butting direction.