WO1984002559A1

WO1984002559A1 - Coupling device for formed frame

Info

Publication number: WO1984002559A1
Application number: PCT/JP1983/000465
Authority: WO
Inventors: Takeo Komamura
Original assignee: Japan Art Kikaku Co Ltd
Priority date: 1982-12-29
Filing date: 1983-12-28
Publication date: 1984-07-05

Abstract

A coupling device connects metal frame members (5), (6), (50), (51) of U-shaped cross-section through a resin coupler (7), (52) thereby to constitute a formed frame for a picture or panel. The frame members have fitting holes (9) provided in either rear panels (5c), (6c), (50c), (51c) or side panels (5a), (5b), (6a), (6b), (50a), (50b), (51a), (51b), or notches (54) provided in support ridges (8), (53) formed on the side panels. The couplers are of L-shaped cross-section and have projections (12), (56) to engage with the fitting holes (9) or notches (54) provided in the frame members, as well as retaining ridges (11), (55) to come in press contact or engage with the support ridges (8), (53) formed on the frame members. Thus, the coupling device permits the frame members to be engaged with or disengaged from each other as desired.

Description

DESCRIPTION CONNECTION DEVICE FOR FORMING FRAME BACKGROUND OF THE INVENTION The present invention relates to a connecting device for a forming frame that forms a forming frame such as a frame or a panel by connecting frame materials using a connecting tool.

Conventionally, as a measure for reducing the cost of the connecting device for forming frames, as shown in FIG. 1, a connecting device 3 for connecting the frame members 1 and 2 made of resin has been proposed (see FIG. 53-). No. 80205).

Then, the resin-made connecting member 3 is always smoothly fitted into the U-shaped cross-section of the metal frame members 1 and 2 regardless of the finishing dimensions of the metal frames 1 and 2 and the connecting member 3. In general, the outer dimensions a and b of the connector 3 are made smaller than the inner dimensions a, b ′ of the U-shaped section 4.

As a result, a so-called “ ^r backlash” occurs between the two. By the way, the metal frame members 1 and 2 are formed by drawing with a normal die, but as the production volume increases, the inner surface of the die wears and the inner dimensions of the U-shaped cross section 4 are a 'and b. Since 'becomes narrower, the inner dimensions a' and b 'are generally large in anticipation of this. Therefore, the play between the momentum connector 3 and the U-shaped cross-section 4 becomes larger, and the displacement between the connected frame members 1 and 2 becomes larger due to this cause. The shape of the frame such as 等 or panel becomes distorted.

In addition, due to the presence of ^r play between the frame members 1 and 2 and the connector 3, the airtightness between the two is poor, and this has the disadvantage that the frame members 1 and 2 have a weak connection strength. In addition, since the connecting member 3 for connecting the frame members 1 and 2 has a U-shaped cross section to conform to the U-shaped cross-section 4, a relatively large amount of material is required.

O PI Background of the Invention An object of the present invention is to provide an inexpensive connecting device for a forming frame that does not distort the forming frame even when a positional shift occurs between the members and that has a large connection strength of the frame material rush. To provide.

Another object of the present invention is to provide a connecting device for forming frames that can easily be disassembled during operation or when replacing with a frame material having a different length.

3 stop o

Still another object of the present invention is to prevent the small projections of the connecting tool from coming off the fitting holes of the pure material, thereby distorting or damaging the forming frame when an external force is applied. An object of the present invention is to provide a connecting device for a forming frame that does not slip.

Still another object of the present invention is to provide a connecting device for a forming frame, in which there is no possibility that a connected frame member is detached, the manufacturing is simplified, and the entire structure of the device is simplified. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an example of a conventional connecting device for forming frames.

FIG. 2 is a partially sectional perspective view of the first embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along line XX of FIG.

FIG. 4 is a perspective view of one frame member used in the connecting device of FIG.

FIG. 5 is a perspective view of a connecting tool used in the connecting device of FIG.

FIG. 6 is a perspective view showing a second embodiment of the present invention.

FIG. 7 is a perspective view of a connecting tool used in the connecting device of FIG.

FIG. 8 is a partially sectional perspective view of the connecting device of FIG. 6 as viewed from the bottom surface thereof.

FIG. 9 is a perspective view showing a third embodiment of the present invention.

FIG. 10 is a perspective view showing a connection for removing the connecting device of FIG.

OMPI FIG. 11 is an enlarged perspective view of a main part of a connecting tool used in the connecting device of FIG.

FIG. 12 is an enlarged perspective view of a main part showing another example of a city corresponding to FIG.

FIG. 13 is a perspective view showing a fourth embodiment of the present invention.

FIG. 14 is an exploded perspective view showing a fifth embodiment of the present invention.

FIG. 15 is an exploded perspective view showing a sixth embodiment of the present invention.

FIG. 16 shows a connecting method by the connecting device of FIG. 15, and is a cross-sectional view of a main part showing a protruding state in which a supporting ridge and a holding protrusion are engaged.

FIG. 17 is a cross-sectional view of a relevant part showing a state after the engagement notches and the engagement protrusions are engaged, showing a connection method using the connection device of FIG.

FIGS. 18 and 19 are cross-sectional views of a main part showing a modification of the connecting device of FIG. 15. DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment of the present invention will be described with reference to FIG. .

Reference numerals 5 and 6 denote metal frame members, and reference numeral 7 denotes a resin connector used to connect these metal frame members 5 and 6.

As shown in FIG. 3, the metal frame members 5, 6 support a connecting member 7 on the inner surfaces of both side plates 5a, 5b, 6a, 6b and back plates 5c, 6c. Support ridges 8 are provided along the longitudinal direction of the frame members 5 and 6, respectively. In addition, a fitting hole 9 having a rectangular shape is formed in the front part 10 side of the back plates 5 c, 6 c of the frame members 5, 6, and each tip part 10 has the shape shown in FIG. 'It is a face that is focused on.

On the other hand, as shown in Fig. 5, the resin-made coupler 7 has an L-shaped cross section consisting of the side plate 7a and the back plate 7b. For example, the coupler is made of ABS resin. In the side plate 7a and the back plate 7b, for example, a circle

OMPI The holding projection 11 is also provided to prevent the arc from coming off. This holding projection

By providing 1, the outer dimensions a and b of the connecting member 7 are, for example, 0.2 compared to the inner dimensions a ′ and b ′ of the metal frame members 5 and 6 having a U-shaped cross section. It is slightly larger, about 1.0 mm.

In addition, a flexible piece 13 having, for example, a triangular small projection 12 is provided integrally with the leading end side of the back 7 of the connecting member 7 to be in contact with the side plate 7a side. Then, the resin connector 7 having an L-shaped cross section is fitted to the metal members 5 and 6 having a U-shaped cross section, respectively, and as shown in FIGS. 2 and 3, the frame member 5> 6 The supporting ridges 8 on the side and the arcuate gouge holding projections 11 on the side of the connector 7 are engaged, and the small projections 1 2 of the flexible piece 13 are fitted into the fitting holes 9 of the rectangular shape. The two metal frame members 5 and 6 are connected to form a frame such as a frame or a panel. -As described above, according to the present embodiment, the resin connecting member 7 having the outer dimensions a and b slightly larger than the inner dimensions a 'and b' of the metal frame members 5 and 6 is used. When fitted into the two metal frame members 5 and 6, they are provided on the side 7 a of the connecting member 7 and the edge of the back plate 7 b slightly projecting from the inside of the metal frame members 5 and 6. One protruding edge of each of the arc-shaped holding projections 1 1 that also serves to prevent detachment is attached to the cutting edge 1 5 that is cut to the cutting surface 4 5 ′ that is the cutting surface of the metal frame members 5 and 6. At the end face of No. 0, cut the outer dimensions of the connector 7 and the inner dimensions a, b 'of the metal frames 5 and 6 to the same dimensions, and connect the resin connector 7 to both metal frames. 5, Make it fit with S. Therefore, there is no so-called “play” between the frame members 5 and 6. Therefore, the inner dimensions a ′ and b ′ of the metal frame members 5 and 6 due to the wear of the mold bottom surface become narrower. Even when the dimensions a 'and b' are large in anticipation of the cutting, the connection is always made by cutting the tip of the holding projection 11 by the surface of the tip 10 which has become the above-mentioned tool surface. outer dimension a of tool 7, b and frame member 5, 6 in內郭dimensions a ',' Toba be the same, coupling 7 and the frame material 5, ^r backlash j nose rather Nari between 6, according There is no displacement between the metal frame members 5, 6 connected by the resin-made connecting member 7, and they are connected at right angles.

_OMFI The formed frame such as the frame or panel is not distorted.

Further, the frame member 5, 6 and become very good if adhesion between by connexion both in the absence of ^r backlash J between the connecting device 7, that this shall frame members 5, connection strength 6 large And a dog-shaped forming frame of mechanical strength is obtained.

If the holding projections 11 that are provided on the side plates 7a and the back plate 7b of the resin connecting member 7 and also serve to prevent the arc from coming off, the connecting member 7 is fitted to the metal frame members 5, 6. It is desirable to make the leading end portion thin so that the protruding portion more than necessary can be easily cut by the surface of the leading end portion 10 which has become a blade-like surface. However, the holding projection 11 is not limited to a circular shape, and may have a sawtooth shape.

Further, according to the above-mentioned connecting device for forming frames, the connecting member 7 for connecting the frame members 5 and 6 is made of resin and has an L-shaped cross section which can sufficiently retain the strength, thereby minimizing the resin material. Therefore, the strength can be increased and the cost can be reduced by + minutes.

Next, a description will be given with reference to FIG. 6 showing a second embodiment of the present invention.

This example is a case in which metal frame members 14 and 15 are directly connected by a resin connecting tool 16 having an L-shaped cross section and a straight whole as shown in FIG. Of course, the end faces of the tips 17 of the metal frame members 14 and 15 are forced in a direction perpendicular to the axial direction of the frame members 14 and 15.

Also in this case, similar to the above-described embodiment, when the fitting is performed, the protection which also serves as the release prevention is performed.

Unnecessarily protruding part of the holding projection 1 1 is cut off to cut the frame material 1 4, 1

5 because eliminating ^r play "between the connecting member 1 6, rather Yugamigana, frame

A forming frame having a large connection strength between the members 14 and 15 is obtained. Also, resin

Since the material is minimized, an inexpensive forming frame can be obtained.

In each of the first and second embodiments, the engagement hole for preventing detachment is made of metal.

This is an example in which it is formed on the back plate of the frame material.

Alternatively, it is also possible to adopt a configuration that is provided on any one of the side plates.

In this case, a flexible piece having small projections is provided on the side plate of the resin coupling tool.

It is a matter of course that it is provided so that

OMFI Ί Vv iPO, A third embodiment of the present invention will be described with reference to a ninth embodiment.

In the figure, reference numerals 20 and 21 denote metal frame members having a U-shaped cross section. That

'The details are exactly the same as those of the metal frame members 1 and 2 in FIG. On the other hand, resin couplers 24

(2) This is almost the same as the connector 7 shown in Fig., And is a resin connector with an L-shaped cross-section and the entirety. The holding projections 25 serving also as the main body are provided. Further, a flexible piece 27 having a small protrusion 26 having, for example, a triangular shape, which is in contact with the side plate 24a is provided integrally on both sides of the back plate 24b.

As shown in FIG. 11, the small projection 26 having a triangular shape of the flexible piece 27 is provided with an uncut recess 28 partially cut away. Then, as shown in FIG. 9, the resin connecting member 24 having the L-shaped cross section is fitted to the metal frame members 20 and 21 having the U-shaped cross section, respectively, and the frame members 20 and 21 sides are fitted. Support ridge 2

2 and the connecting tool 24 engage the arc-shaped holding projections 25 on the 4 side to form a rectangular fitting hole.

Fit the triangular small projections 26 of the flexible piece 2 7 to 2 3 and fit both metal frames

# 20 and 21 are connected to form a frame such as a frame or panel.

According to such a connecting device for forming frames, since the detachable concave portion 28 is provided on the small protrusion 26 of the flexible piece 27 having a triangular shape, the frame material having a different length at the time of transportation or a different length. When exchanging, for example, the coupling member 24 engaging the fitting holes 23 of the frame members 20 and 21 W As shown in the figure, a pointed object such as a ballpoint pen 2 9 is abutted, and a small projection 26 is pierced to remove it from the fitting hole 23.

By removing 4, a frame such as a forehead or a panel can be easily disassembled.

FIG. 13 shows a fourth embodiment of the present invention. In this embodiment, a metal frame member is directly connected by a resin connecting member, and an L-shaped cross section as shown in FIG. A flexible piece 32 having triangular small projections 31 is provided at both ends of the back plate 30b of the resin-made connecting tool 30 that is entirely straightened. This is a case in which a detachment concave portion 33 is provided in a part of the starting portion 31, thereby directly connecting the two frame members.

Also in this case, the coupling tool 30 can be easily removed from the frame material by providing the small projections 31 with the removal concave portions 33.

FIG. 12 shows another embodiment of the small projection of the connecting tool, in which the small projection 34 has an arcuate cross section, and a detaching recess 35 is provided at the center thereof. Of course, it is also used as a connector for connecting two frame members at right angles, or as a connector for connecting two frame members in a straight line.

In any of the above embodiments, the connecting tool may have a structure in which no slit is provided between the flexible piece having the small protrusion and the back plate, or a structure in which the small protrusion is provided on the side plate side. In that case, it is necessary to provide a fitting hole in the corresponding side plate of the frame material.

According to the embodiment shown in FIGS. 9 to 13 as described above, a small projection is provided by using a pointed pole pen or the like by providing a detachment concave portion in a part of the small projection of the coupling tool. The formed frame can be easily removed from the fitted hole in which it is fitted, and the formed frame can be easily disassembled when transporting or replacing it with a frame material having a different length. Therefore, these operations become more efficient.

A fifth embodiment of the present invention will be described with reference to FIG.

In the figure, reference numerals 40 and 41 denote metal frame members having a U-shaped cross section. Since the details are exactly the same as those described above, the description is omitted.

On the other hand, reference numeral 42 denotes a resin connecting tool having an L-shaped cross section and the whole. The details are provided on the side plate 42a and the back plate 42b with holding projections 43 that also prevent the sloshing from coming off, and small protrusions 44, for example, in the shape of a triangle, at each end of the back plate 42b. It is provided integrally. That is, the small projections 44 provided on both ends of the back plate 42b are directly and integrally provided on both sides of the back plate 42b. Then, the resin connecting member 42 having an L-shaped cross section is fitted to the leading ends of the metal frame members 40 and 41 having a U-shaped cross section, respectively, to support the frame members 40 and 41. Engagement 4 5 and connecting tool 4 2 Engage arc-shaped holding projections 4 3 on side 2 and fit small projections 4 4 into fitting holes 4 6 with rectangular recesses to fit both metal frame members 40, 41 Concatenate,

〇?-. ΊΡΙ wn-Ό. Assemble a frame such as a picture frame or spring.

According to such a connecting device of the forming frame, since the connecting tool 42 is provided with the small projections 44 directly on the rain end of the back 4 2 b, respectively, the back plate 4 2 b provided with the small projections 44 is provided. Becomes rigid and flexible, and when external force is applied to the frame such as a forehead or a spring, the small projections 4 of the connecting tool 42 are connected to the frame members 40, 4. It must be removed from the first fitting hole 46. Therefore, the holding strength of the entire forming frame is always maintained, and the forming frame is not distorted or damaged due to external force.

The above embodiment shows an example in which metal frame members are connected at right angles by using an L-shaped connecting member. However, the present invention is not limited to this. It can also be used when connecting metal frame members linearly in the middle of the process. However, this case is suitable for making a large forming frame.

Further, in the above embodiment, the small protrusion is provided on the back plate of the connecting member, but may be provided on the side as necessary. In this case, it is necessary to provide a fitting hole for fitting the hole in the side plate of the frame material.简, The shape of the small protrusion is not limited to a triangle, but may be a semicircle, and the shape is not particularly limited.

According to the embodiment shown in FIG. 14 described above, the small projections are provided directly on both sides of the back plate or the side plate of the connecting member, so that the portions provided with the small projections have appropriate elasticity. Therefore, even when an external force is applied to the forming frame, there is no possibility that the small projections of the connecting tool come off the fitting holes of the frame material. Therefore, the forming frame is not distorted or damaged by a small external force.

FIG. 15 shows a sixth embodiment of the present invention, in which 50 and 51 are metal frames, and 52 is for connecting these metal frames 50 and 51. It is a resin connection tool.

The metal frame material 50, 51 is a frame material having a U-shaped cross section composed of both sides 50a, 50b, 51a, 51b and back plates 50c, 51c. , The rain side plates 50 a, 50 b, 51 a, 51 b 緣 and side plates 50 b,-51 b

ΟΜΡΙ Supporting ridges 53 for supporting the connecting tool 52 are provided on the inner surface of each of the frame members 50 and 51 along the hand direction. These frame members 50 and 51 have a front end portion cut into 45 面, and a rectangular protrusion is provided at a predetermined position of the supporting ridge 53 on the side plates 50a and 51a. An engagement notch 54 is formed.

On the other hand, the resin connector 52 has a cross-section consisting of the side plate 52a and the back plate 52b and the entire surface is L-shaped, and is provided at the edge of the side plate 52a and the back plate 52b. An arc-shaped holding projection 55 that also serves to prevent detachment is provided. Further, both ends の of the side plate 52 a are extended in the lateral direction, and rectangular engaging protrusions 56 are provided on each of them.

Then, both ends of the resin connecting member 53 are inserted into metal frame members 50, 51, respectively, and the supporting protrusion 53 on the frame member 50, 5.1 side and the circle on the connecting member 52 side are inserted. Engage with the arc-shaped holding projections 55 and simultaneously engage the rectangular engagement notches 54 with the rectangular flat engagement projections 56 to connect the two frame members 50, 51 to each other, forehead or panel. Etc. are formed.

First, as shown in FIG. 16, for example, as shown in FIG. 16, the two frame members 50, 51 are connected to the side plate 50b of the frame member 50, and to the supporting ridges 53 on the inner surface. 2 b engages the support projections 5 5, and then temporarily reduces the connector 52 with an L-shaped cross-section, and as shown in FIG. 17, retains the side plate 52 a of the connector 52. At the same time as the engagement of 5, the engagement notch formed on the support protrusion 5 3 and the engagement notch 5 formed with the engagement protrusion 5 6 at the same time as the engagement notch 5 4 is engaged with the engagement protrusion 5 6 and the metal frame material 50, one side of the resin connecting member 51 is fitted, and similarly, the metal connecting member 51 is fitted with the other side of the resin connecting member 52, so that the two frame members 50, 51 are similarly fitted. connect.

According to such a connecting device of the forming frame, since the engaging projections 56 are provided by extending the both sides of the side plate 52a of the connecting tool 52, respectively, the portions of the engaging projections 56 are small. The flexibility increases to provide a flexible portion having an appropriate property. Therefore, even if a somewhat large external force is applied, the engaging projections 56 of the connecting tool 52 are not disengaged from the engaging notches 54 engaged, and the connection is not completed. The frame members 50 and 51 do not come off.

The engagement notches 54 formed in the frame members 50, 51®J are provided with a slot for forming a flexible member on the side of the supporting ridge 52, on which the side plates 50a, 50b are easily formed. Since there is no need to provide a socket, the structure of the entire apparatus can be simplified, and costs can be reduced.

Figs. 18 and 19 show the engagement projections 56 of the connector 52 with the release recesses 57 or the release claws 58 so that the frame or panel or the like can be transported. When removing the connecting members 50 and 51 as necessary, such as when replacing them with a different frame material, remove the sharpened pole pin etc. to the above-mentioned removal recess 57 or The frame members 50 and 51 connected to each other by abutting on the removing claws 58 can be easily removed.

In the above-described embodiment, the case where the metal frame material is connected at a right angle by using a connecting tool having an overall L-shape is shown. However, the present invention is not limited to this. It can also be used when connecting frame materials directly in the middle of the straight part of the forming frame. However, this case is suitable for making a large forming frame.

As described above, according to the embodiment shown in FIGS. 15 to 19, the engaging notches are provided in the supporting ridges of the other side plate of the frame material, and both sides of the side plate of the connecting member are respectively provided. By extending the engagement projection and engaging the engagement notch with the engagement projection, there is no danger that the connected frame member will be detached even when a somewhat large external force is applied. In addition, manufacturing is simplified, the structure of the entire device is simplified, and costs can be reduced.

Claims

The scope of the claims

1. In a connecting device for a forming frame in which a metal frame member having a U-shaped cross section is connected using a resin connecting tool, either one of the edges of both side plates of the metal frame member and one of the both side plates. A supporting ridge is provided on the inner surface of one of the side plates, and a fitting hole is provided in the back plate of the metal frame material or in a portion of one of the side plates. The side plate and the back plate are provided with holding projections which also serve to prevent slipping, so that the outer dimension of the connecting tool is slightly larger than the inner dimension of the frame member, and the resin connecting tool is formed. A flexible piece having small projections is provided on both ends of the back plate or side plate of the above, and the coupling tool is fitted into the frame material to engage the support projection on the frame material side with the holding projection on the coupling tool side, Forming the frame material by connecting the fitting holes and the small projections of the flexible pieces.

2. The L-shaped resin connecting part is an L-shaped connecting part that connects metal frame members at right angles. Coupling device.

3. The connecting device for a forming frame according to claim 1, wherein the resin connecting member having an L-shaped cross section is a connecting member entirely connected directly, and the metal connecting member is connected directly.

4. The connecting device for a forming frame according to claim 1, wherein the resin connecting tool having an L-shaped cross section has a detachment concave portion provided in a part of the small projection.

5. The connection of the forming frame according to claim 1, wherein the resin connection member having an L-shaped cross section has small projections provided on both ends of the back plate or the side plate directly provided on both ends of the back plate or the side plate, respectively. apparatus.

6. A support ridge is provided on the side of either side plate of the metal frame material with a U-shaped cross section and one of the side plates, and a side plate or back plate of an L-shaped cross-section resin connector is provided. In a connecting device of a forming frame in which a holding projection is provided at an edge of the frame member so as to engage with the supporting ridge on the frame material side to connect the two frame materials, the supporting ridge of the other side plate of the frame material is provided. An engagement notch is provided on both sides of the side plate of the coupling.

WIPO A connecting device for a forming frame, characterized in that an end is extended, an engagement protrusion is provided on each end, and an engagement notch and an engagement protrusion are simultaneously engaged.

7. The connecting device for forming and purifying according to claim 6, wherein the engaging projection is provided with a releasing concave portion or a releasing claw at an end portion.

OMFI

Ά> WIPO "