JPH11133894A - Structure for connecting structural members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive structure for connecting structural members which is capable of sufficiently maintaining strength by constituting the structure of plastics while maintaining safety. SOLUTION: The structural members 1 are provided with prepared holes 7 for screw fixing at least at three points. A connecting member 3 for connecting the ends of the structural members 1 is formed to a block shape. Screw mounting holes 10 having spot facing parts 11 in the positions corresponding to any of the prepared holes 7 of the structural members 1 are formed at the connecting member so as not to intersect with each other in X, Y, Z directions. Three pieces of the structural members 1 are respectively orthogonally connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural member connecting structure for a frame used as a storage frame for plate materials such as a plasma display panel and a screen printing plate frame, and a product display shelf for an exhibition or the like.

[0002]

2. Description of the Related Art Conventionally, as a structural material connecting structure used for the above purpose, a method of fixing an end portion of a structural material made of extruded metal such as aluminum by attaching an L-shaped bracket is often used. The method of attaching and fixing the L-shaped metal fitting has a drawback that the bolt for mounting the metal fitting is exposed and protrudes outside the frame, so that the clothes of the operator are caught by the bolt.

Japanese Patent Laid-Open No. 8-1 discloses a structure connecting structure for preventing a bolt for mounting a metal fitting from being exposed.
There is an invention described in Japanese Patent No. 28421. As shown in FIG. 10, a connecting member 72 for connecting three structural members 71 at right angles to each other is provided with mounting holes 74a, 74a, 73c at the centers of side surfaces 73a, 73b, 73c of the connecting member 72.
74b, 74c, and three side surfaces 73a, 73b,
A locking piece 75 is formed on the open surface of the space surrounded by 73c, and a cover 76 having a projecting piece (not shown) fitted to the locking piece 75 is attached to the connecting member 72, and connected to the cover 76. Since the member 72 has a cubic shape and the screw 77 does not protrude to the outside, it is safe.

[0004]

However, in this conventional structure connecting structure, the mounting holes 74a, 74b and 74c are formed at the center of the connecting member 72, so that the screw 77 does not hit. Therefore, the thickness between the contact surface of the connecting member 72 with the structural material 3 and the seat of the screw is
When it is made of plastic that is weak to bending, there is a problem that the strength is insufficient because it cannot be taken sufficiently. In addition, since the cover 76 is provided, the price is increased accordingly. Further, since the screwing operation is performed while aligning the screw 77 and the screw hole 78 of the structural member 71, there is a problem that an assembling operation time is required. In addition, in the conventional structure connecting structure, when the structure 71 is added and attached vertically to the side surface of the structure 71, the T-groove 7 formed in the structure 71 is used.
There is a problem in that the nut cannot be fixed to the T-groove 79 unless the connecting member 71 is removed and disassembled to fit the nut to the nut 9 for mounting work. The present invention has been made in order to solve the above problems, and provides a low-cost structural material connecting structure that can maintain sufficient strength even when made of plastic while maintaining safety. The purpose is to do. It is a second object of the present invention to provide a structural material connecting structure capable of reducing an assembling time. Further, it is an object of the present invention to provide a structural material connecting structure that can connect structural materials without removing a connecting member of a frame body once assembled in a case where a structural material is added and attached vertically to a side surface of the structural material. This is the third purpose.

[0005]

The present invention employs the following configuration to achieve the object. In other words, in the structure connecting structure of the present invention, the structure is provided with at least three prepared holes for fixing screws, the connection member connecting the ends of the structure is formed in a block shape, and the connection member is formed in the XYZ directions. A screw mounting hole having a counterbore is formed at a position corresponding to one of the prepared holes of the structural material so as not to cross each other. In addition, it is preferable that the connecting member be provided with a protrusion that fits into a prepared hole of the structural material. In addition, when the structural material is added perpendicularly to the side surface of the structural material, the connecting member is formed of a block-shaped cube, and screw mounting holes having counterbore portions correspond to positions of a plurality of pilot holes on the end surface of the structural material. At least one or more places are provided, a concave portion for storing the diamond nut member is formed on the surface having the counterbore portion so as to overlap the counterbore portion, and a cutout is provided below the concave portion, and the upper surface is provided. It is desirable to form a screw mounting hole having a counterbore obliquely toward the diamond nut storage recess according to the screw hole of the diamond nut member.

[0006]

According to the present invention, the connecting member can reduce the depth of the counterbore and increase the thickness of the contact surface between the counterbore portion and the structural material by the above-described structure. We can take enough. In addition, the protrusion of the connecting member fits into the prepared hole of the structural material, which can increase the strength, and can also be temporarily assembled before screwing at the time of assembling to reduce the assembly time. Can be. Also, after the flange of the diamond nut member is tilted so that it can be inserted into the T-groove perpendicular to the side surface of the structural material, the flange is inserted into the T-groove and then rotated back to attach the flange to the T-groove. Then, after inserting the diamond nut member from the cutout of the connection member into the storage recess,
The connection member and the structural material connected thereto can be fixed by tightening the screw to reduce the distance from the contact surface of the flange connection member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment (hereinafter referred to as an "embodiment") of a structural material connecting structure according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a main part of a structural material connecting structure, FIG. 2 is an exploded perspective view in a case where a structural material is added vertically to a side surface of the structural material, and FIG. FIG. 6 is an exploded perspective view of a main part in another direction, which is an explanatory view showing a method of assembling FIGS. 4 and 5, and FIG. 6 is a cross-sectional view of the main part after the assembling of FIG. 2. 7 to 9 are perspective views showing examples of use.

The structural material connecting structure includes a structural material 1 and a structural material 1
FIG. 2 mainly shows a connecting member 3 for corners connecting the ends 2 of the connecting member 3 and a connecting member 4 used when the structural material 1 is added perpendicularly to the side surface 5 of the structural material 1. 7 to 9 are assembled into a frame as shown in FIG.
Hereinafter, each member will be described.

As shown in FIG. 1, the structural material 1 is made of an extruded material such as aluminum or an aluminum alloy having a constant cross-sectional shape in the longitudinal direction. Prepared holes 7 for screw fixing are formed in three or more places (five places in FIG. 1) in the longitudinal direction. Further, near the four corners of the structural material 3, concave grooves 8 for inserting and fixing the ends of the panel 9 are formed.

The corner connecting member 3 is formed of a block-shaped cube, and has a screw mounting hole 10 having a counterbore 11.
Are formed so as not to cross each other in the three directions of XYZ, and to be located at positions corresponding to any of the plurality of prepared holes 7 of the structural material 3. The counterbore portion 11 of the corner connecting member 3 is formed so as to be positioned on three orthogonal side surfaces. Therefore, the screw mounting holes 10 are formed so as not to cross each other, and there is no fear that the screw head of the tapping screw 12 will hit. Therefore, it is not necessary to make the counterbore portion 11 deep, and the contact surface 20 between the seat and the structural material 1 is not required. Since the thickness can be made sufficiently large, the bending strength is large, and sufficient strength can be ensured even when formed of plastic (for example, polyamide).

On a surface 20 opposite to the side surface facing the counterbore portion 11 (the surface on which the end 2 of the structural material 1 contacts), a plurality of the structural materials 1 are located at positions not overlapping with the screw mounting holes 10. A plurality of projections 13 are formed by being inserted into any one of the pilot holes 7.

In the vicinity of the corner of the connecting member 3, a groove 14 for inserting the corner 15 of the panel 9 is formed corresponding to the position of the groove 8 of the structural material 1. Therefore, using the concave groove 8 of the structural material 1 and the concave groove 14 of the connecting member 3, it is possible to fit the panel 9 used as, for example, a dust-preventing cover in a square shape without notching the corner portion 15. it can.

A circumferential groove 16 is provided at the root of the projection 13 so as to absorb the return generated on the end surface of the prepared hole 7 when the tapping screw 12 is returned.

A hole 17 which does not penetrate and a recess 18 are provided on the upper surface of the connecting member 3. The hole 17 and the concave portion 18 are formed at positions where they are overlapped when the connecting member 3 is turned 180 degrees and attached to the lower part of the frame. Therefore, the screw 19 is attached to the hole 17 of the connecting member 3 arranged at the upper part, and the head of the screw 19 is inserted into the concave part 18 of the connecting member 3 arranged at the lower part of the frame to be stacked, so that the position at the time of stacking is obtained. It is possible to match.

As shown in FIGS. 2 and 3, when the structural member 1 is added perpendicular to the side surface 5 of the structural member 1, the connecting member 4 is a block-shaped cube like the connecting member 3 for corners. And at least one (two in the figure) screw mounting holes 21 having counterbore portions 22 are provided corresponding to the positions of the plurality of pilot holes 7 in the end portion 2 of the structural material 1. A plurality of projections 25 (two locations in the figure) are formed on the surface 24 opposite to the surface 23 having the position corresponding to the positions of the plurality of pilot holes 7 of the structural material 1 so as not to overlap the screw mounting holes 21. A concave portion 26 for receiving the diamond nut member 27 is provided on the surface having the counterbore portion 22 so as to overlap the counterbore portion 22.
Is formed, and a notch 34 is formed below the concave portion 26.
And the diamond nut member 27 is received from below into the storage recess 26.
It can be stored in. A screw mounting hole 30 having a counterbore 31 is formed on the upper surface 28 of the connecting member 4 at an angle toward the diamond nut storage recess 26 in accordance with the screw hole 29 of the diamond nut member 27. Screw holes 29 of the diamond nut member 27
The diamond nut member 27 can be connected to the connecting member 4 by screwing the screw 32 through the hole. Similarly to the connecting member 3, a circumferential groove 16 is provided at the root of the projection 25 so as to absorb the return generated on the end face of the prepared hole 7 when the tapping screw 12 is returned. I have.

Next, a method of assembling the structural material connection structure shown in this embodiment will be described. For example, in order to assemble a corner portion, that is, to connect three structural members 1 at right angles to each other, as shown in FIG. After being inserted and fitted into the prepared hole 7 of the end portion 2, a tapping screw 12 is screwed into the prepared hole 7 from the inside of the connecting member 3 (through the counterbore portion 11) to connect the structural member 1 and the connecting member 3. . This operation is similarly performed on the other two structural members 1 and the remaining two side surfaces of the connecting member 3. In this operation, by inserting the projection of the connecting member 3 into the prepared hole 7 of the end surface of the structural material 1, the screw can be temporarily assembled before being screwed, and the positioning can be performed (the screw mounting hole 10 and the prepared hole 7). Since it is not necessary to perform the screwing operation while adjusting the position, the assembling time can be reduced (since the screwing operation can be performed in a state where the frame is temporarily assembled).

The structural material 1 is perpendicular to the side surface 5 of the structural material 1.
In the case of additional connection, as shown in FIG. 2, first, a projection 25 formed on the side surface 24 of the connection member 4 is inserted and fitted into the lower hole 7 of the end 2 of the structural material 1, and then, The tapping screw 12 is screwed into the hole 7 from the inside of the connecting member 4 (through the concave portion 26 and the counterbore portion 22), and the structural member 1 and the connecting member 4 are connected. Subsequently, as shown in FIG. 4, the flange 33 of the diamond nut member 27 is tilted so that it can be inserted into the T-shaped groove 6 perpendicularly to the side surface 5 of the structural member 1.
Is inserted into the T-slot 6 and then returned (rotated) in the direction of the arrow to attach the flange 33 to the T-slot 6 as shown in FIG. Then, after the diamond nut member 27 is inserted into the storage recess 26 from the notch 34 of the connecting member 4 (pressing it with a finger so that the diamond member 27 does not fall), the screw 32 is tightened to secure the flange 33 and the flange 33 as shown in FIG. The distance between the connecting member 4 and the contact surface 23 is reduced to fix the connecting member 4 and the structural material 1 connected thereto. According to this method, when the structural member 1 is added perpendicularly to the side surface 5 of the structural member 1 after the frame is assembled, the structural member 1 can be additionally connected without removing the connecting member 3, and the fixing position is fleece. There is no limitation on the pitch at the top and it can be fixed at a desired position.

The structural material 1 is perpendicular to the side surface 5 of the structural material 1.
Can be additionally connected, and can be assembled as a frame by using the structure 1 without cutting along the way, so that the strength of the assembled frame can be increased. Also,
By connecting the structural material 1 vertically to the side surface 5 around the end 2 of the structural material 1 by using the method of connecting the structural material vertically to the side surface 5 of the structural material 1, the end of the structural material 1 2 requires an end cap, but the structural material 1 and the connecting member 4
It is also possible to form a frame only by a combination of the above. In the structural material connecting structure of the above embodiment, since the end 2 of the structural material 1 is covered with the end surface 20 of the connecting member 3 or the end surface 24 of the connecting member 4, the structural material 1 is cut without any additional processing. Can be used and does not require an end cap at end 2.

Next, an example of use of a frame using the structural material connecting structure of the present invention will be described. As shown in FIG. 7, a method of assembling the corner portions, that is, a method of connecting the three structural materials 1 at right angles to each other, and a method of additionally connecting the structural materials 1 to the side surface 5 of the structural material 1 are sequentially combined, as shown in FIG. It is possible to assemble the frame body 36 that can be used as a stepped storage shelf. Although not shown, the end of the panel 9 is inserted and fitted into the concave groove 8 of the structural member 1 and the concave groove 14 of the connecting member 3 as shown in FIG. Use it as a cover.

The storage frame 41 of the plasma display panel 42 can be assembled and used as shown in FIG. The storage frame 41 is provided with a fixed-side guide rail unit 43 and a movable-side guide rail unit 44, and each unit has an L-shaped guide rail 45.
Are provided in a plurality of stages so as to face each other on the fixed side and the movable side, and the panel 42 is stored horizontally by moving the guide rail unit 44 on the movable side horizontally while the panel 42 is stored horizontally between the guide rails 45. It is formed so that the width can be adjusted in accordance with the width of the sheet.
Further, a guide roller 46 is provided as appropriate so that the panel 42 to be stored is smoothly moved into the storage frame 41.

As shown in FIG. 9, the storage frame 51 of the screen frame 52 for screen printing can be assembled and used. In this case, the width can be adjusted in accordance with the width of the plate frame 52 by using the advantage that another structural member 1 can be additionally fixed to the structural member 1 forming the frame by free stop as described above. That is, the structural material 1 is additionally connected to the storage frame 51 in the horizontal direction to be a vertically movable movable structural material 1, and has a U-shape so as to face the fixed structural material 1 and the movable structural material 1. Are provided in a plurality of rows, and the plate frame 52 is stored between the guide rails 53 in the vertical direction (up and down direction). A plurality of guide rollers 54 are provided in each guide rail 53 so that the plate frame 52 can be smoothly stored in the frame body 51.

Since each frame of the above embodiment is formed by combining an aluminum structural material and a plastic connecting member, the weight can be reduced.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the side surface 5 of the structural member 1
Although the screw 32 is screwed into the connecting member 4 from obliquely above when the structural member 1 is additionally fixed to the connecting member 4, the screw 32 may be screwed from obliquely below by turning the connecting member 4 upside down. In this case, it is not necessary to press the stored diamond nut member 27 with a finger because the notch 34 does not peel upward and the diamond nut member 27 does not fall downward. Also, in the above embodiment, it is desirable that there is no directionality in assembling.
However, it is possible to assemble it as a frame body by providing a T groove 6 on two orthogonal side surfaces 5 and assembling such that the side surface 5 provided with the T groove 6 is inside.

[0025]

Since the present invention is configured as described above, the following effects can be obtained. According to the first aspect of the present invention, it is possible to prevent the screw head from being hidden by the counterbore and to prevent the engine head from being exposed, so that safety can be maintained. Further, the cost and the like can be reduced because the cover and the like of the prior art are not required. Since the connecting material has a small counterbore depth and a large thickness between the seat of the counterbore part and the abutting surface of the structural material, a structural material capable of sufficiently securing strength against bending load can be obtained. A connection structure can be provided. According to the second aspect of the present invention, the strength of the connecting member can be increased by fitting the protrusion of the connecting member into the lower hole of the structural member.
The provision of a structural member connection structure that can reduce the time required for assembling can be provided because the position can be temporarily assembled before being screwed before assembling. According to the invention of claim 3,
After the flange of the diamond nut member is tilted so that it can be inserted into the T-groove perpendicular to the side surface of the structural material, the flange is inserted into the T-groove and then rotated back to attach the flange to the T-groove. Then, after inserting the diamond nut member from the cutout of the connecting member into the storage recess, the screw can be tightened to reduce the distance from the contact surface of the flange connecting member, thereby fixing the connecting member and the structural material connected thereto. In the case where a structural material is to be added perpendicularly to the side surface of the structural material, a structural material connecting structure capable of connecting the structural materials without removing the connecting member of the assembled frame body can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a case where a structural material is added vertically to the structural material according to one embodiment of the present invention.

FIG. 3 is an exploded perspective view of a main part in another direction of FIG. 2;

FIG. 4 is an explanatory view showing an assembling method according to one embodiment of the present invention.

FIG. 5 is an explanatory view showing an assembling method according to one embodiment of the present invention.

FIG. 6 is a sectional view of a main part after assembly in FIG. 2;

FIG. 7 is a perspective view showing an example of use of an embodiment of the present invention.

FIG. 8 is a perspective view showing a usage example of one embodiment of the present invention.

FIG. 9 is a perspective view showing a usage example of one embodiment of the present invention.

FIG. 10 is an exploded perspective view showing a use state of an embodiment of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structural material 2 Structural material end part 3 Corner connecting member 4 Additional connecting member 5 Side surface of structural material 6 T-slot 7 Prepared hole 10 Screw mounting hole 11 Counterbore part 12 Tapping screw 13 Projection 22 Counterbore part 25 Projection 26 Recess 27 Diamond nut member 29 Screw hole 30 Screw mounting hole 32 Screw 33 Flange 34 Notch

Claims (3)

[Claims] At least three holes for fixing screws are provided in a structural material, and a connecting member for connecting ends of the structural material is formed in a block shape so that the connecting members do not cross each other in the XYZ directions. A structural material connection structure in which a screw mounting hole having a counterbore portion is formed at a position corresponding to one of the pilot holes of the structural material. 2. The structural member connecting structure according to claim 1, wherein the connecting member has a projection that fits into a lower hole of the structural member. 3. A connecting member when a structural material is added perpendicularly to a side surface of the structural material, the connecting member comprises a block-shaped cube,
At least one or more screw mounting holes having a counterbore are provided corresponding to the positions of the plurality of pilot holes on the end face of the structural material, and the face having the counterbore is overlapped with the counterbore to be a diamond nut member. And a notch is provided below the recess, and a screw mounting hole having a counterbore is formed on the upper surface diagonally toward the diamond nut storage recess according to the screw hole of the diamond nut member. The structural material connecting structure according to claim 1.