JPH0216707Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for joining frames made of light metal or synthetic resin using joint fittings for frames for prefabricated picture frames. In detail, the utility model registration application dated February 1, 1985, submitted by the applicant.
61-13531) concerning improvements.

[Conventional technology]

In the above-mentioned invention for the utility model registration application, as shown in FIG.
The frame 10a or 10c is pulled out from the joint fitting 1 with the stoppers 7, 7 removed downward from the notch 12 of c.
It was not always easy to completely remove the two.

[The problem that the idea aims to solve]

As mentioned above, when the stopper 7 is removed from the notch 12, even if the substrate 2 is made of elastic synthetic resin, a considerable pressing force is required to push down the protrusion 5 located at the center of the substrate 2. Moreover, when four frames are connected, removing the first frame requires sliding both ends of the frame at the same time, making removal even more troublesome.

On the one hand, this means that the joint fitting 1
Although this was excellent in that the frame 10 and the frame 10 were firmly connected, it could not be said to be particularly suitable for disassembly work.

[Means to solve the problem]

Means for solving the above-mentioned problems will be explained using FIGS. 1 to 5 and FIG. 7 corresponding to the embodiment. A joint metal fitting 1 has locking edges 3, 3' stretched above and below the edges of two adjacent sides of a substantially regular square substrate 2 in grooves 11, 11' arranged oppositely on the upper and lower sides along the inner longitudinal direction. By fitting the locking edge, the inclined joint surface 1 of the frame end
7, in which a notch 12 having the same angle as the joint surface of the frame is cut in the vicinity of the joint surface of the back plate 16 of the frame, and the joint fitting is inserted. Stoppers 7, 7 having an inclined surface 7b on the direction side and a vertical portion 7a on the opposite side and fitted into the notch are provided protrudingly on the substrate, and stoppers 7, 7 are provided on the substrate to protrude from the pair of locking edges of the substrate. A handle 2a curved toward the surface of the frame is provided at one corner on the opposite side, and cut grooves 20, 20 are provided between the stoppers 7, 7 of the substrate and the locking edges 3, 3 parallel to each locking edge, respectively. Along with cutting,
The present invention is characterized in that push-down knobs 21, 21 of each stopper are provided in parallel with the notch grooves between each notch groove of the substrate and each of the elastic handles 2a.

[Effect]

In the present invention having the above configuration, the picture frame 1
The locking edges 3,
3', the inclined joint surfaces 17 of the frames are joined, and the frames are joined together.

During the insertion operation of the joint fitting 1, the board 2
Since the pair of stoppers 7, 7 provided above have an inclined surface 7b in the direction in which the joint fitting 1 is inserted, the operation of fitting the stoppers into the notch 12 can be easily performed. After fitting into the notch 12 of the stopper 7, the vertical portion 7a of the stopper 7 firmly fits the joint fitting 1 and the frame 10.
In other words, the connection between each frame becomes strong.

Furthermore, since the notch 12 made in the frame has the same angle as the inclined joint surface 17 of the frame 10, the notch 12 can be formed by cutting in the same direction as the inclined joint surface 17 of the frame 10. Therefore, the inclined joint surface 17 and the notch 12 of the frame 10 can be formed by one cutting process.

Further, the base plate 2 of the joint fitting 1 is provided with a handle 2a made of an elastic member and curved toward the rear side of the frame. Since the handle 2a is stretched over one corner of the substantially square board 2, the elasticity of the handle 2a acts on the entire board 2, and the handle 2a also acts on the pair of stoppers 7, 7 of the board 2. 2a, when the front member 13 and back member 15 are stacked and stored in a frame having a U-shaped cross section, the handle presses the back member 15 in the direction of the front member 13 and simultaneously presses the joint. Metal fittings 1
The substrate 2 is pressed against the back plate 16 of the frame, and this pressing force strengthens the fitting of the stopper 7 into the notch 12, and furthermore, this pressing force uniformly presses the joint fitting 1 against the back plate 16 of the frame. , it is possible to maintain a state in which there is no misalignment between the bonding surfaces 17 of each frame.

Furthermore, in the present invention, cut grooves 20 are provided between the stopper 7 of the base plate 2 and the locking edges 3, 3, parallel to each locking edge. Joint metal fittings 1
In order to remove it from the frame, it is necessary to push down the board 2 from the frame and completely remove the stopper 7 of the joint fitting 1 from the notch 12. However, the handle 2a is stretched over the corner of the board 2 and presses against the back member 15 of the picture frame storage item.
Also, the locking edges 3, 3' of the board 2 are connected to the grooves 1 of the frame.
1, 11' and is in a fixed state,
If the substrate 2 is not provided with the cut groove 20 described above, a considerable pressing force is required to push the stopper down from the frame and separate from the cut 12 against the elastic force of the handle 2a, and a force exceeding a certain level is required. If you push it down, there is a risk of deformation or cracks in the board. However, in the present invention, as mentioned above, the cut grooves 20 are provided between the stopper 7 of the base plate 2 and the locking edges 3, 3' in parallel with each locking edge, so that it is difficult to press down. By pushing down the board 2 through the handle 21, the board 2 is moved between the narrow part where the notches 20 and 20 intersect and the handle 2.
Using a as a fulcrum, the stopper part of the board 2 is easily bent in the downward direction, and the stopper 7 is cut into 1
2, it can be completely removed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The joint fitting 1 shown in FIG. 1 has a substantially regular square substrate 2 as a main body, and has an elastic handle 2a curved toward the back of the frame (downward in the drawing) attached to one corner, and two sides opposite to this. A locking edge 3 on the upper side of the board and a locking edge 3' on the lower side of the board are stretched along the board, and inside the locking edge 3' there is a thick part 4 that enhances the reinforcing properties of the joint, and a frame 10 to be described later. An edge step 4' that fits into the groove 11 is provided, and the angle between the handle 2a on the board 2 and the locking edge 3 on the upper side of the board is 45 degrees with respect to the locking edge 3. 7b is provided on the insertion direction side when fitting into each frame to be described later, and stoppers 7, 7 each having a vertical portion 7a provided on the opposite side thereof are provided protrudingly, and the whole is formed by integral molding. .

Further, in this joint fitting 1, notch grooves 20, 20 are cut between the stoppers 7, 7 of the board 2 and the locking edges 3, 3, parallel to each locking edge, respectively. Push-down knobs 21, 21 of the stoppers 7, 7 are stretched parallel to the cut grooves between the grooves 20, 20 and the elastic handle 2a, respectively.

Reference numeral 5 denotes a protruding portion provided across a long hole 6 penetrating the substrate 2, through which a locking string can be passed.

In the above-mentioned joint fitting, since the handle 2a is integrally stretched over one corner of the substrate 2 formed into a substantially regular square, the elasticity of the handle 2a is
It acts on the entire body, and can also exert the elastic action of the handle 2a on the pair of stoppers 7, 7 of the base plate 2.

Further, since the grooves 20, 20 cut in the substrate 2 are provided between the stoppers 7, 7 and the locking edges 3, 3 so as to be parallel to each locking edge, the push-down knob 21 can be When the board 2 is pushed down through the
The base plate 2 can easily bend the stopper portion of the base plate 2 in the downward direction using the handle 2a and the narrow portion where the notches 20 and 20 intersect as a fulcrum. Furthermore, since the cut grooves 20, 20 are provided so as to sandwich the handle 2a including the stoppers 7, 7 as shown in the figure, the handle 2a including the stoppers 7,
The elasticity of can be made flexible.

The frame 10 shown in FIG. 2 constitutes a picture frame by joining four frames, and both end portions of each frame form an angle of 45° to form a joint surface 17 between the frames. Further, each frame is formed to have a substantially U-shaped cross section, and grooves 11 and 11' are disposed opposite to each other on the upper and lower sides along the inside longitudinal direction, and the locking edges 3 and 3' of the joint fitting 1 are connected to each other. By fitting, the joint fitting 1 and each frame can be connected.

In addition, near the end of the back plate 16 extending to the back side of the frame (lower side of the paper) of each frame, when the joint fitting 1 is fitted as described above, stoppers 7, 7 are provided.
The notch 12 that fits is the joint surface 1 of the frame end.
The holes are cut at an angle of inclination similar to 7, namely 45°. Therefore, when forming each frame,
The notches 12 can be formed by cutting in the same 45° direction as the inclined joint surfaces of the frames, and the joint surfaces 17 and the notches 12 of each frame can be formed by one cutting process.

The top plate 18 of each frame shown in FIG. 2 is formed to have an arcuate cross section in order to enhance the design effect of the exterior.

To connect a pair of vertical and horizontal frames having such a configuration via the joint fitting 1, first attach one end of the upper frame 10a to one of the joint fittings 1, as shown in FIGS. 7a to 7e. The grooves 11, 1 of the frame 10a are formed on the locking edges 3, 3'.
1', respectively, and then do the same for the upper end of the vertical frame 10b and attach the joint fitting 1.
be fitted into each.

In this fitting operation, there are cut grooves 2 in the substrate 2.
0 is notched, the stopper 7 portion of the board 2 can be easily bent downward by pushing down the knob 21, and the opposite side of the insertion operation is the inclined surface 7b. The stopper 7 is easily fitted into the notch 12, and after fitting, the vertical portion 7a is firmly fitted into the notch 12, and the stopper 7 is prevented from coming out of the notch 12 even due to vibration or the like. It can be prevented.

When assembling the actual picture frame, as shown in FIG.
5 and the painting 14 interposed between them are superimposed within each frame, that is, the top plate 18 of the frame.
and the back plate 16 of the frame via the joint fitting 1.
However, as is clear from the figure, the curved part of the elastic handle 2a of the joint fitting 1 presses the back plate 15 against the front plate 18 of the frame, and the back plate 15 and the painting 14 , the glasses 13 are pressed against each other, and can act to hold down the picture 14 at the corner of the frame where the joint fitting 1 is provided. At the same time, the base plate 2 of the joint fitting 1 resists the pressing force of the elastic handle 2a, and the back plate 1 of the frame
6 can be pressed to firmly fit the stopper 7 into the notch 12. Furthermore, the third
As shown in the figure, since the back plate 16 of each frame to which the substrate 2 is joined is evenly pressed by the resistance force against the pressing force of the elastic handle 2a, this pressing force causes the joint surfaces 17 of each frame to be shifted from each other. It can be kept in no condition.

To disassemble the picture frame, as shown in FIG. If you push up the knobs 21, 21 in the direction of the arrow, the inner substrate portion 2b surrounded by the cut grooves 20, 20 will be removed.
As a result, one stopper 7 is easily bent and twisted.
is pressed down sufficiently and separates from the notch 12, and the frame 10a is moved from the frame 10 on both sides.
The metal fittings 1, 1 are removed from b, 10c with the metal fittings 1, 1 attached to both ends.

Thus, if one frame 10a is extracted, the other three frames may be processed simultaneously as described above, or may be processed separately.

In addition, in this invention, it is also possible to suspend a picture frame by passing a string through the long hole 6 using the long hole 6 and the protruding part 5 of the joint fitting 1.

[Effect of idea]

As explained above, according to the present invention, when attaching the joint fitting to the frame, the inclined surface of the stopper facilitates the operation of fitting the stopper into the notch, and after fitting, the action of the handle makes it easy to fit the stopper into the notch. At the same time, the joint surfaces of each frame are kept in a state of no misalignment, and the connection between the joint metal fittings and the frame, that is, the connection between each frame, is strengthened, which combines with the reinforcing effect of the approximately square-shaped board. This increases the strength of the frame corners and makes the entire frame robust against external forces.

In addition, by pressing down the picture, etc. interposed between the front member and the back member by the pressing force of the handle against the item stored in the frame, the picture, etc. in the frame does not shift or curve at the corners of the frame.

Furthermore, the present invention has the advantage that the cutting of the frame can be performed simultaneously with the cutting of the end of the frame in one step.

In particular, according to the device of the present invention, since the handle between the cut grooves, including the stopper, is easily bent, when removing the joint fitting from the frame, the locking action between the stopper and the cut is released by pressing down on the push-down knob. This makes it possible to assemble and disassemble picture frames smoothly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a joint fitting showing an embodiment of the device of the present invention, Fig. 2 is a partially cutaway perspective view showing the end of a picture frame, and Fig. 3 is a perspective view showing a state in which the joint fitting is connected to the frame. Fig. 4 is a cross-sectional view of the section taken along line A-A in Fig. 3;
The figure is a rear view showing how to remove the first frame from the assembled picture frame, Figure 6 is a partially cutaway rear view of an example of a conventional product, and Figures 7 a to e are joint fittings at the corners of the frame and each frame. FIG. 3 is a perspective view sequentially illustrating the coupling operation of FIG. DESCRIPTION OF SYMBOLS 1... Joint metal fitting, 2... Board, 3, 3'... Locking edge, 7... Stopper, 7a... Vertical part of stopper,
7b... Sloped surface of stopper, 10... Frame for picture frame, 11, 11'... Concave groove, 12... Notch, 16...
Back plate of frame, 17... joint surface of frame terminal,
18... Frame top plate, 20... Cut groove, 21...
Press down knob.

Claims (1)

[Scope of utility model registration request] Picture frame 10 formed into a substantially U-shaped cross section
A joint metal fitting 1 has locking edges 3, 3' stretched above and below the edges of two adjacent sides of a substantially regular square substrate 2 in grooves 11, 11' which are arranged oppositely on the upper and lower sides along the inner longitudinal direction of the joint fitting 1. A picture frame frame coupling device for coupling the inclined joint surface 17 of the frame end by fitting the locking edge of the frame, wherein the joint surface of the frame and the joint surface of the frame are arranged in the vicinity of the joint surface of the back plate 16 of the frame. While cutting a cut 12 having a similar angle, an inclined surface 7 is formed on the side in which the joint fitting is inserted.
A stopper 7, 7 having a vertical portion 7a on the opposite side thereof and fitted into the notch is provided protrudingly on the substrate, and a picture frame is provided at one corner on the opposite side of the pair of locking edges of the substrate. A handle 2a curved in the surface direction is provided, and grooves 20, 20 are cut between the stoppers 7, 7 of the substrate and the locking edges 3, 3 parallel to each locking edge, respectively. Between each notch groove of the substrate and each of the elastic handles 2a, a knob 21 for pressing down each stopper is provided parallel to the notch groove, respectively.
1. A device for joining a frame for a picture frame, characterized in that 21 is stretched.