JP3830142B2 - Frame corner connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a frame corner connector that is inserted into both vertical and horizontal frames made of an extruded shape such as aluminum and abuts at a right angle at a cut end surface of 45 degrees.
[0002]
[Prior art]
The frame corner connector is generally formed in an L shape from metal or plastic, and is connected by inserting and fixing to both the vertical and horizontal frames. Since it is unsightly when it appears on the front side of the frame, it is necessary to prevent gaps from occurring. Conventionally, a butt fixing means for pressing both frames in the longitudinal direction with respect to the corner connector so as to apply a force to the butt is used as the means.
[0003]
For this, for example, a booster mechanism such as a lever, a cam, or a screw, or a check claw is used. Those described in Japanese Patent Nos. 2878983 and 3075526 related to this applicant can be said to be an example using a check claw. However, the butt fixing means alone cannot completely prevent a gap at the butt on the front side of the corner.
[0004]
[Problems to be solved by the invention]
The reason for the gap on the front side of the corner is that the frame has a margin in the rotation direction with the corner connector insertion piece as the axis, so even if it is pressed on the back side by the butt fixing means, it does not butt on the front side One reason is that there are times. This is a phenomenon peculiar to the fact that the cut end face of the frame is a 45-degree slope. Incidentally, in the case of a connector having a corner block at the corner of the L-shape, in this case, since the end of the frame is a right angle, a gap is not generated and is not noticeable.
[0005]
In view of the above circumstances, the present invention is provided with a vertical and horizontal frame butt fixing means, and since the butt is made on the front side in preference to the back side, a frame corner that does not cause a gap in the butt on the front side. The object was to provide a connector.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the frame is provided with a butt fixing means for pressing the vertical and horizontal frames to each other at the cut end faces of 45 degrees through an L-shaped corner connector made of plastic. The insertion piece has an L-shaped cross section composed of a vertical width piece that is joined and fitted to the outer wall of the frame, and a horizontal width piece that is joined and fitted to the back side wall, and is a base portion that is deeper than the insertion port portion. Then, the frame corner connector is provided so that the front side wall of the frame is pushed inwardly by the elasticity of the vertical width piece that is angularly deformed with respect to the horizontal width piece.
[0007]
[Action]
According to the above configuration, in order to connect the vertical and horizontal frames, there is no resistance at the beginning of insertion into the insertion piece and there is no resistance, but when the base end part is reached, the vertical width piece elastically presses the front side wall of the frame Because it is fixed with no margin to rotate with respect to the frame, the cut end surface of the front side wall protrudes slightly, so there is no gap at the butt of the front side wall, and this state is maintained in combination with the action of the butt fixing means Is done.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, at the base end where both the insertion pieces 3 and 3 are deeper than the insertion port portion 4, the vertical width piece 5 is shaped to push the front side wall 16 of the frame 1 in the inner direction T by elasticity at the front end. The cut end face 27 is pushed out in the component force direction R so that no gap is generated in the butt joint 33 between the front side walls 16 and 16, but this shape varies in the relative shape with the frame 1. .
[0009]
With respect to the shape, in claim 2, the angle of the L-shaped section of the base end portion of the insertion piece 3 is reduced with respect to the inner angle α between the outer wall 15 and the rear side wall 17 of the frame 1, The internal angle α of 1 is generally a right angle, but at that time, the L-shaped angle is an acute angle (see the embodiments of FIGS. 5 and 6).
[0010]
Further, in the third aspect, at the base end portion of the insertion piece 3, protrusions are provided on the rear side end of the outer side surface of the vertical width piece 5 and the front side end of the inner side surface to achieve the same function. However, the shape of the protrusions may be ridges 8 and 9 (see the embodiment of FIGS. 1 to 4), protrusions, or ridges. Furthermore, since the shape is relative to the frame 1, even if a protrusion is provided on the frame 1, it does not contradict the spirit of the present invention.
[0011]
For the butt fixing means 10, for example, a boosting mechanism such as a lever, a cam, or a screw, or a check claw is used. In the embodiment, the case where the check claw 11 is used is shown. In addition, since the butt is given priority on the front side, there may be a gap in the butt stitch 34 on the back side, but there will be no eye contact in use.
[0012]
【The invention's effect】
As described above, according to the frame corner connector of the present invention, in view of the above circumstances, the vertical and horizontal frame butt fixing means are provided, but the elasticity works at the base end of the insertion piece. Therefore, the matching is done on the front side in preference to the back side or at the same time, and because the frame is fixed freely, there is no gap on the front side, and even if it occurs, it is aesthetically maintained to the extent that it does not stand out Therefore, it provides an excellent effect in providing a good-looking picture frame.
[0013]
【Example】
Next, an embodiment of the present invention will be described with reference to the drawings.
[0014]
1 to 4 show an embodiment, and the corner connector P of the frame is an L-shaped connector having insertion pieces 3 and 3 for both the vertical and horizontal frames 1 and 1 of the frame G, Both insertion pieces 3 and 3 are formed in an L-shaped cross section where the horizontal width piece 6 meets the vertical width piece 5, and a pair of upper and lower protrusions 8 and 9 are provided on the vertical width piece 5 with different side surfaces. On the pieces 5 and 5, check claws 11 and 11 constituting the butt fixing means 10 of the vertical and horizontal frames 1 and 1 and a bifurcated button 13 for pressing both of them are provided.
[0015]
The frame 1 of the frame G has a U-shaped cross section in which a front side wall 16 and a back side wall 17 are refracted at right angles to the outer wall 15, and a vertical width piece 5 of a corner connector P is formed on the back side wall 17 on the outer wall 15. Each of the horizontal strips 6 is joined, and furthermore, by inserting an internal projecting piece 19 parallel to the outer wall 15 on the front side wall 16, the insertion groove 21 of the vertical width piece 5 is formed with a marginal width. It is. Further, a reverse refracting piece 22 is provided at the inner end of the horizontal width piece 6, and a fitting groove 23 into which the end of the horizontal width piece 6 is fitted is tightly formed. Due to this tight width, the horizontal width piece 6 is held in close contact with the back side wall 17 of the frame 1. Further, an opening edge piece 25 is provided at the end of the front side wall 16 so that a content such as a transparent plate or a back plate (not shown) is sandwiched in the opening between the opening edge piece 25 and the inverted refraction piece 22. Yes.
[0016]
Further, as a configuration of the butt fixing means 10, a notch groove 29 for allowing the bifurcated button 13 to escape is formed in the back side wall 17 of the frame 1, and a through hole 31 into which the check claw 11 is fitted is provided.
[0017]
Regarding the corner connector P, the angle between the outer surface of the vertical width piece 5 and the outer surface of the horizontal width piece 6 is the same as the inner angle α between the outer wall 15 and the back side wall 17 of the frame 1. Since the protrusions 8 and 9 are formed along the outer corner edge and the inner edge of the outer surface, respectively, the outer protrusion 8 causes the outer wall 15 to be connected to the rear end when the insertion piece 3 is inserted into the frame 1. And the inner ridge 9 pushes the lower end of the inner protruding piece 19 inward with the fulcrum as the fulcrum, so that it is accompanied by slight elastic deformation of the outer wall 15 and slight rotation of the frame 1. The side wall 16 moves slightly inward (T direction), and as a result, the cut end face 27 protrudes in the R direction on the front side wall 16, and thus the butt stitch 33 is tightly tightened when the butt fixing means 10 is operated. .
[0018]
In addition, although it is the same even if only the inner protrusion 9 is provided, it is effective to provide both protrusions 8 and 9 as described above. Further, when only the outer ridge 8 is provided, the ridge 8 is totally displaced inward by the reaction of pushing the frame 1, and at this time, the position of the ridge 8 serves as a fulcrum and the vertical strip 5 is inside. Since the projecting piece 19 is pushed inward, the same result without a gap is obtained.
[0019]
As for the butt fixing means 10, the elastic piece 35 is formed by providing the U groove 36 around the check claw 11, and the bifurcated button 13 is provided so as to straddle between the elastic pieces 35, 35. When releasing the connection of the frame 1, the check claws 11, 11 are removed from the through holes 31, 31 by pressing the bifurcated button 13 downward.
[0020]
5 and 6 show another embodiment. In the frame 1, the inner angle α between the back side wall 17 and the outer side wall 15 is a right angle, but the insertion piece 3 of the corner connector P is a horizontal width piece. When the insertion piece 3 is inserted into the frame 1, the front side wall 16 is moved to the inner side by the elastically deformed repulsive force of the inner angle expansion (when the insertion piece 3 is inserted into the frame 1). A similar result is obtained with no gap on the front side. Note that the L-shaped angle of the insertion piece 3 is extremely shown for the sake of clarity.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a frame corner connector according to the present invention in a connecting manner of vertical and horizontal frames.
FIG. 2 is a perspective view showing a state in which vertical and horizontal frames are connected.
FIG. 3 is a cross-sectional view taken along line AA in FIG. 2;
FIG. 4 is a plan view seen from the surface showing a state in which vertical and horizontal frames are connected.
FIG. 5 is a cross-sectional view of a frame showing another embodiment.
FIG. 6 is a cross-sectional view of a main part of the corner connector in the same embodiment.
[Explanation of symbols]
G Frame P Corner connector T of the frame Inner direction 1 Frame 3 Insertion piece 4 Insertion port portion 5 Vertical width piece 6 Horizontal width piece 8, 9 Rib 10 Butt fixing means 15 Outer wall 16 Front side wall 17 Back side walls 21, 23 Insertion Groove 27 Cutting end face α Inner angle

Claims (3)

The frame has a butt-fixing means for pressing the vertical and horizontal frames against each other at a cut end face of 45 degrees through an L-shaped corner connector made of plastic. In the corner connector, both insertion pieces are attached to the outer wall of the frame. In the base portion that is L-shaped in cross section consisting of a vertical width piece that is joined and inserted and a horizontal width piece that is joined and fitted to the back side wall, the front side wall of the frame is directed inward in the base portion that is deeper than the insertion port portion. A corner connector for a picture frame, characterized in that it is configured to be pushed by the elasticity of a vertical width piece that deforms at an angle with respect to the horizontal width piece. The frame has a U-shaped basic shape with the outer wall refracting the front side wall and the back side wall, and it fits inside the outside wall and inside the back side wall in order to fit the vertical and horizontal width pieces respectively. Grooves are formed, and the bases of both insertion pieces push the front side wall inward by slightly reducing the angle of the L-shaped cross section with respect to the inner angle between the outer side wall and the back side wall of the frame. The frame corner connector according to claim 1, wherein the frame corner connector is shaped. The frame has a U-shaped basic shape with the outer wall refracting the front side wall and the back side wall, and it fits inside the outside wall and inside the back side wall in order to fit the vertical and horizontal width pieces respectively. Grooves are formed, and at the base part, the front side wall is pushed inward by providing protrusions such as protrusions or protrusions on both or one of the rear end of the outer surface of the vertical width piece and the front end of the inner surface. The frame corner connector according to claim 1, wherein the frame corner connector is shaped.

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