JPH0434013Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the structure of a mitered part of a frame member, which is formed by mitering the frame members together by means of ultrasonic welding via a joining member. .

(Problems to be solved by the prior art and the invention) As a conventional means for joining frame members made of synthetic resin with hollow parts such as door frame members to each other, as shown in FIG. , a to each other using screws c using an angular joining member b was common. However, when using such screwing means, there was a problem that workability was poor, and
The effect of fixing the frame material a and the joining member b is limited to the screwed portion, and there is also a problem in terms of the reliability of the joining strength. Incidentally, although the fixing strength can be improved by increasing the number of screws used, there arises the disadvantage that workability is deteriorated accordingly. In addition, there was a risk that the screws would loosen and the miter joints would become unstable, and in order to prevent the tips of the fixing screws from protruding into the surface of the frame material, the thickness of the hollow part d of the frame material a should be increased to a certain level or more. Therefore, the thickness of the hollow part d is regulated,
There was also the inconvenience of not being able to satisfactorily meet requests for diversification of frame material designs.

Other means for mitering the frame members together using a joining member include means for bonding and integrating the frame member and the joining member, and furthermore, means for high-frequency welding the frame member and the joining member. . however,
In the case of the former method of adhesion, curing is required until the adhesive hardens, resulting in poor work efficiency and the higher the adhesive, the more expensive the adhesive, leading to an increase in manufacturing costs. Not only were there problems, but the adhesive surface easily peeled off when subjected to an impact load, and there was also a problem in terms of reliability of frame material bonding. Furthermore, in the case of the latter method of high frequency welding, it is necessary to apply high press pressure to the welding surface, and there is a problem that the surface pressing portion of the frame material is damaged due to thermal deformation or the like.

The present inventor focused on the fact that the above-mentioned problems can be solved by adopting ultrasonic welding means, and when applying this means to the mutual mitering of frame materials, the shape of the frame materials And by making the form of the joining member unique, the present invention has been completed.

(Means for Solving the Problems) The structure of the frame member miter part (hereinafter referred to as structure) according to the present invention is such that the frame members 1 and 1 made of synthetic resin are connected to each other via the joining member 2 made of synthetic resin. A structure of a mitered part of a frame material which is mitered by means of sonic welding,
The frame material 1 is made of an extruded material having a hollow part 5 continuous in the length direction and having a continuous clamping groove 7 or a continuous fixing protrusion 23 on the back surface part 6. The joining member 2 is attached to the substrate 13 with L
A plurality of protruding leg legs 16 which are bent in a shape and whose tip portions 15 can come into contact with the back surface 6 of the frame material 1 are provided protruding in parallel at a required interval, and at least one of the protruding leg legs The fixing groove 25 formed between adjacent protruding legs is elastically held in the groove 12, or the fixing protrusion 23 is elastically fitted into the fixing groove 25 formed between adjacent protruding legs. protruding leg 1
The frame members 1 and 1 are integrated with each other by the joining member 2 by applying ultrasonic welding to the abutting portion between the front end portion 15 of the frame member 6 and the rear surface portion 6 of the frame member 1.

(Example) Examples of the present invention will be described below based on the drawings.

FIRST EMBODIMENT In FIGS. 1 and 2, the structure of the present invention is such that frames 1 and 1 made of synthetic resin are joined to each other by means of ultrasonic welding via a joining member 2 made of synthetic resin. be.

The frame material 1 is made of an extruded material 3 (see FIG. 3), and as shown in FIG. For example, triangular cylinder-shaped clamping parts 8 and 9 forming a continuous clamping groove 7 are connected to the tops 10 and 1 of the clamping parts 8 and 9.
1 are provided so as to face each other at a required interval.

As shown in FIGS. 1-2 and 4-5, the joining member 2 has an L-shape and an outer edge 13a is connected to the frame member 1.
On one surface of the substrate that can come into contact with the inner surface 1a of the outer edge of the
A plurality of protruding legs 16 (three in this embodiment) are bent into an L-shape according to the L-shape of the substrate 13 and whose tip portions 15 can come into contact with the back surface 6 of the frame material 1.
They are protruded in parallel at a required interval. In this embodiment, as shown in FIG.
A protruding leg 16a protruding toward one side is elastically held in line contact by the opposing top portions 10 and 11 in the clamping groove 7, and the protruding leg 16b in the center are in contact with the inner wall portion 17 of the holding portion 9 located inside. Further, a small protrusion 19 (see FIG. 5) having a triangular cross section is provided at the tip of the protrusion leg 16 in order to perform ultrasonic welding more effectively.

However, the structure of the present invention has V-cuts 20 at appropriate locations.
The extrusion molded material 3 (see Fig. 3) that has been subjected to
After bending at right angles as shown in the figure, the first protruding leg 1
6a is clamped in the clamping groove 7, the joint member 2 is attached to the joint end portion 21 of the frame members 1, 1, and the end portion 15 of each protruding leg 16 and the frame member 1, 1 are attached.
Ultrasonic welding 22 is applied to the contact area with the back surface parts 6, 6.
(See Figure 2).

Second Embodiment FIG. 6 shows another embodiment of the structure according to the present invention, in which the frame members 1, 1 to be mitered both have a hollow portion 5 continuous in the length direction. It is made of an extruded material having continuous fixing protrusions 23 on the back surface 6, and the ends are cut at an angle of 45 degrees. In this structure, the fixing groove 25 formed between the adjacent protruding legs 16a and 16b of the joining member 2 and the fixing protruding strip 23 are elastically fitted, and each protruding By performing ultrasonic welding 22 on the abutment portion between the tip 15 of the leg 16 and the back surface 6 of the frame members 1, 1, the independent frame members 1, 1 are joined together by the joining member 2. It's being turned into something.

(Effects of the invention) As a result of the structure of the invention configured as described above, the following excellent effects are achieved.

In the structure of the present invention, the frame members are joined to each other using a joining member having a plurality of protruding legs, and the contact portion between the tip of the protruding legs and the back side of the frame member. Since they are integrated by ultrasonic welding, the miter work can be done instantly, greatly contributing to improved productivity. Moreover, the frame members can be joined to each other with a good finish without causing thermal deformation as in high frequency welding. In addition, since the frame members having a hollow portion and high rigidity are completely integrated with each other through a connecting member having a plurality of protrusions and high rigidity, the synergistic effect of these components makes it possible to fasten the frame members. The joint strength of the joint is extremely high, and it is essentially different from the above-mentioned methods of fixing with screws, which may come loose, or adhesive means, which are vulnerable to impact loads. Remarkably superior.

Since the protruding legs of the joining member are configured to be elastically clamped in the clamping grooves provided on the back surface of the frame material (not limited to clamping in the line contact state shown in the above embodiment), The frame materials to be mitered are naturally temporarily fixed in the correct mutual positional relationship until they are ultrasonically welded, which improves workability and processing accuracy. sell. The effect of temporary fixing is particularly remarkable when mitering independent frame members to each other.

Since the hollow part of the frame material does not need to have a function for accommodating screws as in screw fixing means, the thickness of the hollow part can be set arbitrarily, and therefore the design of the frame material It can be expected to have diversified effects.

When the entrance of the clamping groove is formed in a V-shape as in the above embodiment (see reference numeral 23 shown in FIGS. 1 and 2), the protruding leg can be easily press-fitted into the clamping groove. Further improvement in workability can be expected, and as in the same embodiment, a hollow portion (see reference numeral 25 shown in FIG. 2) is formed between adjacent protruding legs and the back surface of the frame material. If this is done, the rigidity of the miter joint can be further improved, which is preferable.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
3 is a plan view showing the extruded material, FIG. 4 is a perspective view showing the frame material to be mitered and the joining member, FIG. 5 is a sectional view of the joining member, and FIG.
The figure is a sectional view illustrating another structure of the present invention, and FIG. 7 is a perspective view illustrating the structure of a conventional frame member mitering part. 1... Frame material, 2... Joining member, 5... Hollow part,
6... Back surface portion, 12... Holding groove, 16... Protruding strip leg, 23... Fixing protrusion, 25... Fixing groove.

Claims (1)

[Scope of utility model registration request] The structure of the frame member mitered part is formed by joining frame members 1 and 1 made of synthetic resin to each other by means of ultrasonic welding via a joining member 2 made of synthetic resin, the frame member 1
The joint member 2 is made of an extruded material having a hollow part 5 continuous in the length direction and a continuous clamping groove 7 or a continuous fixing protrusion 23 on the back surface part 6. , a plurality of protruding legs 16 which are bent into an L-shape and whose tip portions 15 can come into contact with the back surface portion 6 of the frame member 1 are provided on the substrate 13 in a parallel manner at required intervals, and at least one The protruding legs are elastically held in the clamping grooves 12, or the fixing grooves 25 formed between adjacent protruding legs 23 are elastically fitted into each other. By performing ultrasonic welding on the abutting portion between the tip 15 of the protruding leg 16 and the back surface 6 of the frame material 1, the frame materials 1 and 1 are integrated with each other by the joining member 2. The structure of the mitered part of the frame material is characterized by being