JPH0547723B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a member for joining materials such as wood, resin, metal products, etc., and in particular, to a member that can reliably join materials without impairing the beauty of the product. , relates to a member for joining materials.

(Prior art) For example, frame products such as picture frames are made of materials such as wood, resin, and metal, and both ends of the material are cut diagonally to form an end portion, and the end portion is formed in the same way. It is manufactured by being combined with other terminal parts.
When the ends of the material are formed diagonally and butted together in this way, it is called a mitokiri, and the process of assembling the material in the shape of a mitokiri is called mitokiri processing.

FIGS. 8 and 9 show examples of conventional joining methods for cut-off processing. In Fig. 8a, a reinforcing plate 5 is attached to the butted materials 3 and 4 using nails or adhesive.
Figure b shows an example in which the material is joined by lining it with a nail 7 from the side thereof.

In addition, Figure c shows a joining method in which a groove is machined at the end of the material, a triangular member 6 is fitted into the groove from the side, and then the triangular member 6 is fitted into the groove, and the protruding portion of the member 6 is removed after joining to finish. . This method is called kari processing, and is particularly applied to products where aesthetic appearance is important.

Figure d shows an example in which the parts are simply joined with an adhesive without using a joining member. FIG. 9 is a perspective view of FIG. 8c.

Among the conventional methods described above, methods other than d are to join the ends of both materials with an adhesive, and then use a joining member such as a reinforcing plate, a nail, or a triangular member as shown in the figure to join the ends with an adhesive. The product is made by reinforcing the parts.

(Problems to be Solved by the Invention) The above-described conventional techniques had the following problems.

The products produced by methods a and b shown in Figure 8 have a poor appearance, while the products produced by method c have a good appearance, but the grooves are complicated, which requires time and effort, and it is difficult to finish the protruding parts. It also requires a considerable amount of man-hours, resulting in high costs.

In addition, especially for materials that have been previously painted, method c cannot be used because there is a risk that the paint will be damaged when finishing the protruding parts.

In the product produced by method d, the bonding member is not reinforced, so there remains a problem in terms of strength.

Furthermore, in the above conventional method, the bonding member only serves to reinforce the bonding force of the adhesive, and the time required for the adhesive to dry is
The material to be bonded cannot be moved and it is not possible to proceed to the next process. Therefore, this drying time becomes loss time and becomes a factor in increasing the cost of the product.

The present invention has been made to solve the above-mentioned problems.

(Means and effects for solving the problems) The present invention for solving the problems described above provides a fixing part consisting of a fixing part and a shaft provided to the fixing part via a connecting part, and and a rotating part forming a pair, the rotating part having a groove into which the shaft and the connecting part of the fixed part can be inserted from the side direction of the shaft, When the rotating part and the stationary part act as a pair, a part of the rotating part is provided with a "relief" so that the connecting part does not interfere with the rotating part so that the rotating part can rotate around the axis. Similarly, a part of the fixed part is provided with a "relief" to prevent the rotating parts from interfering with each other, and the groove is arranged so that the center of rotation of the rotating part is in the direction of the opening of the groove with respect to the center of the rotating part. It is distinctive in that it is formed so that it can be installed eccentrically.

One fixed component and one rotary component of the joining member of the present invention having the above configuration are buried in the end portions of the two butted materials to be joined, with a portion thereof protruding from the end portions. After the shaft and connecting part of the stationary part are inserted into the groove of the rotating part,
When the rotating part is rotated approximately half a turn, the stationary part and the rotating part are drawn together and the two materials are bonded.

(Example) An example of the present invention will be described in detail below with reference to the drawings.

1a shows a plan view of a fixing part of a joining member according to an embodiment of the invention, FIG. 1b shows a side view of the same, and FIG. Fig. 3 shows a plan view of the rotating parts of the member for use, and b shows a side view of the same. FIG. 3a is a perspective view of the stationary component, and FIGS. 3b and 3c are perspective views of the rotating component viewed from different directions.

In the figure, the fixing part 1 includes a fixing part 11 having a partially concave cylindrical side surface 14 formed by removing a part of the side surface of a cylinder, and the partially circular side surface 14,
It is comprised of a shaft 13 provided via a connecting portion 12 so as to be parallel to the central axis of the substantially cylindrical fixing portion 11 .

On the other hand, the rotating component 2 has a cylindrical shape, and a groove 21 extending in the axial direction of the rotating component 2 is formed on a side surface of the cylindrical rotating component 2 .

The width of the groove 21 is such that the shaft 13 can be inserted therein.
The groove 21 has a dimension slightly larger than the outer diameter of the shaft 13, and the shaft 13 of the fixed part 1 and the connecting portion 12 are inserted into the groove 21.
The bottom of the groove 21 has a semicircular shape 22 that substantially matches the outer diameter of the shaft 13 so that the rotary component 2 can be inserted and rotated around the shaft 13 .

Moreover, when the rotating part 2 is rotated, the connecting part 1
A "relief" 23 is provided in the flank flank of the rotary part 2 so that the rotary part 2 can be rotated at least half a turn without interference.

Note that, as will be described in detail later, the center of the semicircle 22 is eccentrically provided in the direction of the opening of the groove 21 with respect to the center of the rotating component 2.

Reference numeral 24 denotes a driver insertion groove, which is used to embed the rotating component 2 in the material to be joined and insert a driver into the groove 24 to rotate it. Therefore, the shape of the groove 24 can be selected depending on the shape of various drivers, and the shape of the head of the rotating component 2 in which the groove is provided can be selected using a screwdriver or a fastening tool equivalent to or for the same purpose. It is optional to transform it into any possible shape.

Next, a description will be given of the joining operation when the above-mentioned material joining member is applied to the cutting process.

FIG. 4 is a perspective view of the end of a material, such as a picture frame, to be cut. Holes 31 and 41, which are not penetrated and into which the fixed part 1 and the rotating part 2 are respectively fitted, are arranged in advance so that they are parallel to the end surfaces of the materials 3 and 4, that is, the abutting surfaces. It is provided.

The holes 31 and 41 are open on their sides,
When the fixed part 1 and the rotating part 2 are fitted into the holes 31 and 41, the connecting part 1 of the fixed part 1 is inserted into the opening.
2 or the opening of the groove 21 of the rotating component 2 is located.

FIG. 5 is a diagram showing a state in which materials 3 and 4 are ready to be joined. The fixed part 1 and the rotating part 2 are fitted into the holes of the materials 3 and 4 that have been machined in advance, and the two materials are separated by a gap G. They are opened and butted together.

Here, the center of the semicircular bottom 22 of the groove 21 into which the shaft 13 and the connecting part 12 are inserted, that is, the rotation center 25 of the rotating component 2, is the opening of the groove 21 relative to the center 26 of the rotating component 2. It is provided to be biased in the direction of the section.

Therefore, when the rotating part 2 is rotated in the direction of the arrow 5 with a fastening tool such as a screwdriver, the shaft 13 is regulated by the movement of the groove 21 and rotates on the circumference with the eccentricity of the centers 25 and 26 as the radius. , the center of the shaft 13 moves.

Then, when the rotating part 2 is rotated half a rotation, the fifth
From the state shown in the figure, the center of the shaft 13 is moved to the right by the maximum amount, that is, twice the eccentricity of the centers 25 and 26.

FIG. 6 shows the state in which the shaft 13 has been moved to its maximum extent within the rotary part 2. FIG. As shown in the figure, as a result of the movement of the shaft 13 within the rotating part 2, the fixed part 1 integrated with the shaft 13 is also moved, the gap G narrows, and the material 3
and 4 will be in close contact.

The position of the holes to be drilled in advance in materials 3 and 4 is the 5th hole.
As shown in the figure, with the shaft 13 in contact with the bottom of the groove 21, it is desirable that the distance G be set to be slightly smaller than twice the eccentricity between the centers 25 and 26. That is, the difference between twice the amount of eccentricity and the distance G becomes the "interference" after the end portions of the materials 3 and 4 come into contact.

Here, the partially circular side surface 14 of the fixed part 11 is
The movement of the rotating part 2 is smoother when the outer shape of the rotating part 2 matches the outer shape of the rotating part 2, but the shape is not limited to this. If deleted, the object of the present invention is achieved.

Figure 7 shows the appearance of the back side of the picture frame after it has been cut. As shown in the figure, the back side of the frame can be cut to remove any protruding parts.

According to this embodiment, as is clear from the above description, the shaft 13 of the fixed part 11 is connected to the groove 21 of the rotating component 2.
By simply inserting the rotary part 2 into the machine and rotating the rotary part 2 with a screwdriver or the like, the cutting process can be easily performed.

Furthermore, for purposes that require high bonding strength between materials, it is natural that the bonding strength will be increased if the bonding member of this embodiment is used after applying an adhesive to the edges of the materials. Even in this case, after the materials are fastened together using the joining member of this embodiment, the next step such as finishing the product can be immediately carried out without drying the adhesive.

In this embodiment, only the cut-off process has been described, but the present invention can also be applied to the joining of butt ends in which the edges of the material are not oblique.

(Effects of the Invention) As is clear from the above description, according to the present invention, the following effects are achieved.

(1) Reliable bonding that does not impair the beauty of the product is possible.

(2) Since the time for the joining process can be shortened, the cost of products such as picture frames and frames can be reduced.

(3) Even painted materials can be joined without damaging the painted parts.

(4) The axes of the stationary component and the rotating component are parallel to each other, and they are used by inserting them into holes provided parallel to the abutting surfaces of the materials from a direction perpendicular to the abutting surfaces. Therefore, when assembling an article whose final shape is a frame or annular shape, the material to be joined is brought into contact with the other assembled materials at both ends, that is, when it is butted into a shape that is approximately the same as the final shape of the article. Once aligned, a fastening part and a fastening part can be inserted into the holes to join the materials together.

(5) Since the axes of the fixed part and rotating part are parallel to each other when embedded in the material to be joined, the holes in the material to be joined in which they are embedded can be easily opened from the same direction relative to the material to be joined. It can be processed into Further, by making the diameters of the fixing portions of the rotary component and the fixed component the same, it is possible to further facilitate machining of the hole.

[Brief explanation of the drawing]

FIGS. 1 and 2 are a plan view and a side view showing fixed parts and rotating parts of the material joining member of the present invention,
FIG. 3 is a perspective view of the same, FIG. 4 is a perspective view of the end portion of the material to be joined, FIG. FIG. 7 is a back view of the picture frame to which the present invention is applied, and FIGS. 8 and 9 are a plan view and a perspective view showing the prior art. 1... Fixed parts, 2... Rotating parts, 3, 4...
Material, 11... Fixed part, 12... Connecting part, 13...
...Shaft, 14... Fixed part side surface, 21... Groove, 22...
...Groove bottom, 23...Rotating component deletion portion, 24...Driver insertion groove, 25...Rotation center, 26...Rotating component center.

Claims (1)

[Claims] 1. A hole drilled in parallel to the abutting surfaces of a pair of joined members that are abutted against each other to form a predetermined shape, from a plane perpendicular to the abutting surfaces. A material joining member consisting of a fixed part and a rotary part which are inserted and buried respectively and perform a joining function as a pair, the fixed part having a cylindrical fixed part and a side surface of the fixed part protruding from the fixed part. a connecting part and a cylindrical shaft provided integrally with the connecting part and parallel to the cylindrical fixing part, and in a state where the fixing part is embedded in the hole, the fixing part and the cylindrical shaft is configured to be parallel to the abutment surface, while the rotating component has an overall cylindrical shape,
A connecting portion and a shaft of the stationary part are inserted, and a groove is provided therein for storing the rotating part so that the rotating part can rotate around the shaft, and the depth of the groove is set relative to the center of the rotating part. The center of rotation of the rotating part is set to be eccentric toward the fixed part, and further, when the rotating part is rotated around the axis of the fixed part, the connecting part of the fixed part does not interfere. A part of the side surface of the rotating part is removed, and a part of the side face of the fixed part is also removed so that the rotating part does not interfere. 2. The member for joining materials according to claim 1, wherein a part of the side surface of the rotating component is removed so long as the rotating component can rotate at least half a rotation. 3. The above-mentioned patent claim, characterized in that the cross-sectional shape of the removed portion of the fixing portion perpendicular to the circumferential surface of the fixing portion is a partial circular shape with a curvature that substantially matches the outer diameter dimension of the rotating component. The member for joining materials according to item 1 or 2. 4. The member for joining materials according to claim 1, wherein the materials to be joined are stubs whose ends are diagonally butted together. 5. The member for joining materials according to claims 1 to 4, wherein a fastening tool insertion groove for rotating the rotating component is formed in the head of the rotating component.