JPH0118058Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a forming frame connecting device for connecting frame materials using a connecting tool to create a forming frame such as a picture frame or a panel.

[Conventional technology]

The present applicant previously proposed a connecting device for forming frames that properly and reliably connects metal frame members using resin connectors (Utility Application No. 57-199415).

As shown in FIG.
Support ridges 3 are provided on the edges and the inner surfaces of the side plates 1b, 2b, and fitting holes 4 are provided in the back plates 1c, 2c,
On the other hand, as shown in FIG. 2, holding protrusions 6 are provided on the side plate 5a and back plate 5b of the resin connector 5 having an L-shaped cross section, and a small protrusion 7 is provided on the back plate 5b side to connect to the side plate 5a. A flexible piece 8 is provided. Then, as shown in FIG.
c and 2c, and side plates 1 of frame materials 1 and 2.
Support protrusions 3 provided on the edges of a, 2a and back plates 1c, 2
By inserting the connecting tool 5 into the tips of the frame members 1 and 2 while holding the side plate 5a of the connecting tool 5 with the screws c and 5, and engaging the small protrusion 7 into the fitting hole 4. , two frame members 1 and 2 are connected at right angles.

In addition, similar to the invention related to the above-mentioned prior application, in order to facilitate the assembly of the frame members constituting the forming frame, a frame member having a decorative plate insertion groove and an inclined end face and an L connecting the frame members are provided. The frame member is provided with an insertion portion that is open at the end surface through which one side of the connector is inserted, and each piece of the connector has a V-shaped bent piece extending in both directions. In addition, a device was developed in 1973 in which the connecting tool was provided with a claw on one side edge and a long hole along the edge, and the frame member was provided with a fitting hole into which the claw engaged. -Disclosed in Publication No. 102895.

[Problem that the invention attempts to solve]

However, the above-mentioned connecting device according to the applicant's earlier application has a small protrusion 7 provided on the back plate 5b side of the connecting tool 5.
Since the flexible piece 8 is provided through the slit 9, this flexibility is very good. 7 could come off from the fitting hole 4, causing both frame members 1 and 2 to come off. Further, it is difficult to drill a rectangular fitting hole 4 in the center of the end of the back plates 1c, 2c of the frame members 1, 2, and the connector 5
Since the slits 9 are also formed in the back plate 5b, manufacturing becomes complicated, and the structure of the entire device becomes complicated, leading to high costs.

Furthermore, in the device disclosed in the above-mentioned publication, although the connecting tool has a long hole and the spring force allows the claw to easily engage with the fitting hole, conversely, when an external force is applied, Since the part on which the pawl was formed was flexible, there was a risk that the pawl would come off from the fitting hole. However, since the connecting tool is a plate material with a planar cross section, it cannot withstand external forces from all directions, and as mentioned above, the claws may come off from the fitting holes, and the connection of the frame materials may become difficult. There was a drawback that parts were distorted by external force. In addition, it is troublesome to provide a fitting hole on one side edge of the frame material or to provide a long hole to increase flexibility on the connector side.

[Purpose of invention]

The present invention was devised in view of the actual situation, and even if external force is applied to the connecting part from any direction, there is no risk of the connected frame material coming off or being distorted, and it is easy to manufacture and easy to use. It is an object of the present invention to provide a forming frame connecting device having a simple overall structure.

[Means for solving problems]

In order to achieve such an objective, the present invention has a metal frame member having a U-shaped cross section and consisting of both side plates and a back plate sandwiched between the both side plates, and a metal frame member formed from the back plate and the side plates, a resin connecting tool having an L-shaped cross section that is inserted into the end of each frame material and connects the frame materials sequentially;
At the edges of the side plate and back plate of the connector, holding protrusions are provided that protrude on the same plane as the side plate and back plate, respectively, and on either the side plate or the back plate, protruding in the same direction as the holding protrusions. Providing an engaging protrusion,
Further, a supporting protrusion is provided on the inner surface of one of the side plates of the frame material to sandwich the holding protrusion of the connector to be inserted into the frame material between the back plate of the frame material, and the frame material A support having engagement notches on the edges of both side plates of the frame member for sandwiching either the side plate or the back plate of the connector between the side plate and the back plate of the frame member, and in which the engagement protrusion of the connector engages. It has protrusions.

[Effect of invention]

According to the present invention, the cross section L inserted through the end of the frame material
The letter-shaped connector is held between the supporting protrusion of the frame material and the back plate, and the rigid engagement protrusion is securely engaged with the engagement notch, so that the connection part of the frame material is Even if an external force is applied from any direction, the connector will not come off the frame member, and the connector will firmly maintain the connected state of the connecting portion against such external force.

[Example of idea]

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 shows an embodiment of the forming frame connecting device according to the present invention.

10 and 11 are metal frame members, and 12 is a resin connector for connecting these metal frame members 10 and 11.

The metal frame members 10 and 11 include both side plates 10
a, 10b, 11a, 11b and back plates 10c, 11
A metal frame member having a U-shaped cross section consisting of C, and supporting protrusions 13 for supporting the connector 12 are provided on the edges of the side plates 10a, 10b, 11a, and 11b and on the inner surfaces of the side plates 10b and 11b, respectively. Frame material 10, 11
are provided along the longitudinal direction. These frame materials 1
0 and 11 are faces cut at an angle of 45 degrees at the tips, and rectangular engagement notches 14 are formed at predetermined positions of the support ridges 13 on the side plates 10a and 11a.

On the other hand, the resin connector 12 has an L-shaped cross section and an overall L-shape consisting of a side plate 12a and a back plate 12b, and an arcuate retaining protrusion 15 is provided at the edge of the side plate 12a and back plate 12b, which also serves to prevent slippage. has been established. Further, both end edges of the side plate 12a are extended in the lateral direction, and rectangular engaging protrusions 16 are provided at each end. That is, in this embodiment, instead of the structure in which small projections are provided on the flexible piece as shown in FIG.
6 are provided at both ends of the side plate 12a to strengthen the rigidity of the engaging protrusion that engages with the frame material, and by making the entire connector 12 L-shaped in cross section, the connector is protected from external forces from all directions. The connecting tool 12 is designed to firmly maintain the connected state of the connecting portion when the connecting portion is strained.

Since this embodiment is constructed as described above, in order to connect both the frame members 10 and 11, first, as shown in FIG. Support protrusion 1 of back plate 12b of
5, and the connector 12 having an L-shaped rear cross section is once reduced to form the side plate 1 of the frame material 10 as shown in FIG.
The side plate 12a of the connector 12 is attached to the support ridge 13 on the edge 0a.
At the same time, the support protrusion 13 is engaged with the holding protrusion 15 of the
One side of the resin coupling tool 12 is inserted into the metal frame material 10 by engaging the engagement protrusion 16 with the engagement notch 14 formed in the metal frame material 11. 12 and insert the other side of both frame members 10 and 11.
Just connect them.

Then, the holding protrusion 13 of the connecting tool 12 inserted into the end portions of the frame members 10, 11 is held between the support protrusions 15 of the frame members 10, 11 and the back plates 10c, 11c, and
The side plate 12a of the connector 12 is held between the support ridges 15 provided on the edges of the side plates 10a, 11a of the frame members 10, 11 and the back plates 10c, 11c, and the rigid engagement protrusion 16 is engaged. Since it is reliably engaged with the notch 14, the connecting tool 12 will not come off from the connecting portion of the frame members 10, 11, and will be able to withstand external forces applied from any direction to the connecting portion of the frame members 10, 11.
The connector 12 firmly maintains the connected state of the connecting portion.

Therefore, according to this embodiment, unlike the conventional case, the holding strength of the forming frame is always maintained, and the forming frame is not distorted or damaged due to external force.

In addition, since the engagement notches 14 formed on the frame members 10 and 11 are provided on the easily formed support ridges 13 on the edges of the side plates 10a and 10b, manufacturing is simplified.
Furthermore, since there is no need to provide a slit on the connector 12 side to increase flexibility, the overall structure of the device is simplified and costs can be reduced.

6 and 7 show the engagement protrusion 1 of the connector 12.
6 is provided with a recess 17 for removal or a claw 18 for removal, and according to this embodiment, it can be used when necessary, such as when transporting a forming frame such as a picture frame or panel, or when exchanging a frame material of a different length. Frame materials 10, 1 connected accordingly
When removing 1, use a pointed ballpoint pen 1
Frame members 10 and 1 are connected by contacting the recess 17 or the claw 18 for removal.
1 can be easily removed.

Although the above embodiment shows a case in which metal frame members are connected at right angles using a connecting tool having an L-shape as a whole, the present invention is not limited to this.
It can also be used when the entire connecting tool is linear and the frame members are directly connected in the middle of the straight part of the forming frame. Incidentally, such a case is suitable for making a large forming frame.

[Effect of idea]

As described above, the present invention consists of a metal frame member having a U-shaped cross section, consisting of both side plates and a back plate sandwiched between the both side plates, and the back plate and side plates, and each adjacent frame member and a resin connecting tool having an L-shaped cross section that is inserted into the end of the frame member and sequentially connects the frame members, and a connecting tool is provided at the edge of the side plate and the back plate of the connecting tool on the same plane as the side plate and the back plate, respectively. A retaining protrusion is provided that protrudes from the side plate, and an engaging protrusion that protrudes in the same direction as the retaining protrusion is provided on either the side plate or the back plate. A support protrusion is provided to clamp the holding protrusion of the connector inserted into the frame material between the back plate of the frame material, and a supporting protrusion is provided on the edge of both side plates of the frame material to hold it between the support protrusion and the back plate of the frame material. Since it is provided with a support ridge that holds either the side plate or the back plate of the connector and has an engagement notch that engages with the engagement protrusion of the connector, it will not engage even if a large external force is applied. The mating protrusion does not come off from the mating notch,
Therefore, there is no longer a risk that the frame material will disintegrate.
In addition, manufacturing is simplified, and the overall structure of the device is also simplified, resulting in cost reduction.

[Brief explanation of drawings]

FIG. 1 is a partially sectional perspective view of an example of the previously proposed connecting device for forming frames, FIG. 2 is an enlarged perspective view of a connecting tool used in the connecting device of FIG. 1, and FIG. 3 is a forming according to the present invention. 4 and 5 are exploded perspective views of an embodiment of the frame connecting device, and show a connecting method using the forming frame connecting device of the present invention. FIG. FIG. 5 is a cross-sectional view of the main part showing the engaged state after the engagement notch and the engagement protrusion are engaged. FIGS. 6 and 7 are the formation according to the present invention. FIG. 7 is a sectional view of a main part of each other embodiment of the frame connecting device. [Explanation of symbols of main parts], 10, 11...
Frame material, 10a, 10b, 11a, 11b, 12a
...Side plate, 10c, 11c, 12b...Back board, 1
3...Support protrusion, 14...Engagement notch, 15...
Holding protrusion, 16... Engagement protrusion, 17... Removal recess, 18... Removal claw.

Claims (1)

[Scope of utility model registration request] A metal frame material with a U-shaped cross section consisting of both side plates and a back plate sandwiched between the both side plates, and a back plate and side plates that are inserted into the ends of each adjacent frame material to form a frame material. A resin connecting tool having an L-shaped cross section that sequentially connects the connecting devices is provided, and retaining protrusions are provided on the edges of the side plate and back plate of the connecting device, respectively, to protrude on the same plane as the side plate and the back plate, and the side plate or an engaging protrusion protruding in the same direction as the holding protrusion is provided on either one of the back plates, and on the inner surface of one of the side plates of the frame material,
A supporting protrusion is provided to sandwich the holding protrusion of the connector to be inserted into the frame material between the back plate of the frame material, and a supporting protrusion is provided between the back plate of the frame material and the edge of both side plates of the frame material. A connection of forming frames, characterized in that a supporting protrusion is provided between which supports either the side plate or the back plate of the connector and has an engagement notch with which the engagement protrusion of the connector engages. Device.