JP3046836U - Cross-joining structure of boards - Google Patents

Abstract

(57) [Summary] [Problem] Even if an external force is applied to each joined plate in the direction of pulling out the tenon, the tenon does not come out of the corresponding insertion groove, so that the plates are more strongly and reliably connected to each other. To provide a cross-joining structure of plates that can be joined. At least one pair of tenons 10, 11 symmetrically inclined by a predetermined angle θa, θb with respect to a plate width direction a and a plate thickness direction b, respectively, are formed at the opening of the plate 1; Mortise 10, 11 is the respective tenon 10, 11
Are fitted into the respective insertion grooves 20 and 21 formed in the opening of the other plate 2 from one side of the other plate 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention generally relates to a cross-joining structure of boards for joining wooden boards at a right angle when joining wooden boards or wooden furniture. More specifically, in a cross-joined structure in which the tenon formed at the tip of one board is pushed into the insertion groove formed at the tip of the other board to join the ends of the boards together, The present invention relates to a cross joining structure of plates designed so that a joining portion is not separated only by applying a force in a tenon pull-out direction.

[0002]

[Prior art]

 There is a so-called dovetail joint structure as a cross joint structure of a plate in which a joint portion between the plates is difficult to separate. As shown in FIG. 8, for example, as shown in FIG. 8, the dovetail joint structure forms an appropriate number of dovetails 30 at the tip of one plate 3 and the dovetails which fit the dovetail 30 at the tip of the other plate 4. Grooves 40 are formed, and each dove tenon 30 of one plate 3 is pushed into each dovetail groove 40 of the other plate 4 from one side so as to be substantially orthogonal to each other, so that the wood ends of the plates 3 and 4 are cross-joined. It is a junction structure.

[0003]

[Problems to be solved by the invention]

 According to the joint structure of FIG. 8, in the state where the plates 3 and 4 are joined to each other, even if an external force is applied to the plate 4 in the direction of the arrow A, each dovetail tenon 30 does not fall out of each dovetail groove 40. However, when an external force is applied to the plate 3 of FIG. 8 in the direction of the arrow, each dovetail 30 comes out of each dovetail 40, the plates 3 and 4 are separated from each other, and the cross-joined state is eliminated.

The purpose of the present invention is to apply an external force to each plate in the direction of pulling out the tenon, so that the tenon does not come out of the corresponding insertion groove, so that the plates are more strongly and surely connected to each other. An object of the present invention is to provide a cross joining structure of plates that can be joined.

[0005]

[Means for Solving the Problems]

 The cross joining structure of the plate according to the present invention is configured as follows in order to solve the above-mentioned problem. That is, in the cross joining structure of the plate according to the first aspect, at least one pair of the cut ends of the one plate 1 are symmetrically inclined by the predetermined angles θa and θb with respect to the plate width direction a and the plate thickness direction b, respectively. Tenons 10 and 11 are formed, and the tenons 10 and 11 are inserted into respective insertion grooves 20 and 21 formed in the opening of the other plate 2 so that the tenons 10 and 11 fit. The plate 2 is pushed in from one side.

[0006] The cross-joining structure of the plate according to claim 2 is the cross-joining structure according to claim 1, wherein a tip of the one plate 1 is provided between the pair of tenons 10, 11. A tenon 12 is formed along the plate thickness direction b and perpendicular to the plate width direction a, and the vertical tenon 12 is formed at the edge of the other plate 2 so that the tenon 12 fits. The vertical insertion groove 22 is pushed from the one side surface.

According to a third aspect of the present invention, there is provided a cross-joining structure according to the first or second aspect, wherein the one board 1 and the other board 2 are provided at one end in the board width direction at the wood edge. Is characterized in that inclined surfaces 13 and 23 of 45 ° are respectively formed so as to fit and contact each other.

According to a fourth aspect of the present invention, in the cross joining structure according to the first or second aspect, the cut ends of the one plate and the other plate are adapted to contact each other. In this manner, the inclined surfaces 13 and 23 of 45 ° are respectively formed.

The cross joining structure of the plate according to claim 5 is the cross joining structure according to claim 4, wherein each tenon of the one plate 1 and each insertion groove of the other plate 2 are formed by the insertion grooves of the two plates. It is characterized in that the plates 1 and 2 are formed so as not to be seen from the outside in the cross-joined state.

The cross joining structure of the plate according to claim 6 is the cross joining structure according to claim 1 or 2, wherein each tenon of the one plate 1 is in a cross joining state of the two plates 1 and 2. The one plate 1 is formed so as not to be seen from the outside.

The cross-joining structure of a plate according to claim 7 is the cross-joining structure of claim 1 or 2, wherein each tenon of the one plate 1 and each insertion groove of the other plate are formed by the two grooves. It is characterized in that the plates 1 and 2 are formed so as not to be seen from the outside in the cross-joined state.

[0012]

[Embodiment of the invention]

 A preferred embodiment of the cross joining structure of the plate according to the present invention will be described with reference to FIGS. First Embodiment FIG. 1 is a partially exploded perspective view of a cross-joined structure according to a first embodiment of the present invention, and FIG. 2 is a partial perspective view of the cross-joined state.

The opening of the wooden boards 1 and 2 is perpendicular to the width plane, and the thickness of both boards 1 and 2 is the same. At the tip of the board 1, a predetermined angle θa is symmetrically inclined toward the center of the board width with respect to the board width direction a at a position away from the center of the board width direction a, and Are formed symmetrically with respect to each other, and a pair of tenons 10 and 11 inclined at a predetermined angle θb are formed. In this embodiment, a tenon 12 is formed in the middle of the pair of inclined tenons 10 and 11 along the thickness direction b and perpendicular to the width direction a. At the opening of the other plate 2, a pair of inclined insertion grooves 20 and 21 and a vertical insertion groove located between them are fitted to the inclined tenons 10 and 11 and the vertical 12 respectively as described above. 22 are formed.

As shown in FIG. 2, the tenons 10, 11, 12 of one plate 1 are pressed into corresponding insertion grooves 20, 21, 22 of the other plate 2. In order to push the tenons 10, 11, 12 into the corresponding insertion grooves 20, 21, 22, respectively, the ridges on the inner sides (the sides which become inner when joined) of the two plates 1, 2 in the state of FIG. Butts are inserted shallowly (they cannot be deeply inserted) into the corresponding ridges inside the corresponding insertion grooves 20, 21, 22 respectively. In this state, the two plates 1 and 2 are synchronized with each other with the shallowly inserted portion as a center (fulcrum) as described above, and symmetrically (separated from the tip of the plates 1 and 2 to be joined) as shown by an arrow c in FIG. Each tenon 10, 11, 12 is pushed into the corresponding insertion groove 20, 21, 22 little by little, while swinging small (to make the part approached or separated) until the state of FIG. 2 is reached. .

As described above, when a pair of tenons 10, 11 of one plate 1 are pressed little by little into the corresponding insertion grooves 20, 21 of the other plate 2, an intermediate tenon 12 and an insertion groove 22 are inserted therebetween. Acts as a guide for pushing. The cross-joined structure of FIG. 2 in which the plates 1 and 2 are cross-joined is a kind of tenon joint structure (notched joint structure) composed of a plurality of tenons. In order to disassemble the plates 1 and 2 by releasing the cross-joined structure, in the state of FIG. By pulling, each tenon 10-12 of the plate 1 gradually escapes from the corresponding insertion groove 20-22 of the plate 2, respectively.

Since the plates 1 and 2 are joined as shown in FIG. 2, even if the plate 1 is strongly pulled downward with respect to the plate 2, or the plate 2 is Even if it is strongly pulled, the tenons 10 and 11 do not come out of the corresponding insertion grooves 20 and 21, respectively. Therefore, the plates 1 and 2 are strongly and more reliably cross-joined without loosening over time. . In the joint structure of this embodiment, the tenon 12 formed between the pair of tenons 10 and 11 functions as a guide at the time of pushing, so that the work of cross-joining the plates 1 and 2 as described above is more likely. It is performed smoothly. Further, since the tenons 10 and 11 and the insertion grooves 20 and 21 are symmetrically inclined at the same angle, respectively, the presence of the central vertical tenon 12 and the insertion groove 22 makes the appearance of the design hobby. The joint structure is rich.

In the present invention, the size of each of the inclination angles θa and θb of the pair of tenons 10 and 11 is appropriately selected according to the thickness and width of the plates 1 and 2. When the thickness of the plates 1 and 2 is large, the inclination angles θa of the tenons 10 and 11 with respect to the plate width direction a are designed to be large (close to vertical), and the inclination angles θb with respect to the plate thickness direction b are designed to be small. For example, when the plate thickness is about 10 mm, it is preferable that the inclination angle θa is about 60 to 80 ° and the inclination angle θb is about 10 to 30 °.

Second Embodiment FIG. 3 is a partially exploded perspective view of a cross joint structure according to a second embodiment of the present invention. In this embodiment, the inclined planes 13 and 23 of 45 ° (with respect to both sides of the board) are fitted to one end of the one board 1 and the other board 2 in the board width direction at the edge of the wood so as to fit and contact each other. Are formed respectively. By forming in this manner, the joint portion looks like a stable large-clamp (single-clamped) joint structure when viewed from one side. Other configurations, operations, and effects of the joint structure of this embodiment are the same as those of the joint structure of the first embodiment, and thus description thereof will be omitted.

Third Embodiment FIG. 4 is a partial perspective view of a cross joint structure according to a third embodiment of the present invention. In the cross-joined structure of this embodiment, the cut ends of one plate 1 and the other plate 2 are formed on the inclined surfaces 13 and 23 of 45 ° so as to fit and contact each other. Further, each tenon 10, 11, 12 of the opening of the plate 1 and the corresponding insertion groove 20, 21, 22 of the opening of the other plate 2 corresponding to the tenon are located on the outer side from the inner surface of the joined plate 1, 2. The two plates 1 and 2 are cross-joined so that each tenon 10-12 and each groove 20-22 do not appear on the surface. It is configured to have a joint structure. With such a configuration, the joining portion looks like a large retaining structure. Other configurations, operations, and effects of the joint structure of this embodiment are the same as those of the joint structure of the first embodiment, and thus description thereof will be omitted.

Fourth Embodiment FIG. 5 is a partially exploded perspective view of a cross-joined structure according to a fourth embodiment of the present invention, and FIG. 6 is a partially perspective view of the cross-joined state. In the joint structure according to this embodiment, the cleave of the plate 1 is integrally formed with the tenon 10-12 at the outer edge of the plate 1 so as to hide the tenon 10, 11, 12 from the outside in the joined state. A hidden wall 14 having a height higher than each tenon 10-12 is formed so as to form the same outer surface. At the mouth of the other plate 2, a concealed bottom 24 is provided so as to cover each groove 20, 21, 22 from the outside in the joined state, and to form the same outer surface as the outer surface. The grooves are formed corresponding to the grooves 20, 21, 22. Therefore, when each tenon 10-12 is pushed into the corresponding insertion groove 20-22, and the plates 1 and 2 are cross-joined, the tenon 10-12 and each groove 20-22 are not visible from the outside, so-called hidden tenon. A joint structure is obtained. Other configurations, operations, and effects of the joint structure of this embodiment are the same as those of the joint structure of the first embodiment, and thus description thereof will be omitted.

Fifth Embodiment FIG. 7 is a partial perspective view of a cross joint structure according to a fifth embodiment of the present invention. In the joint structure of this embodiment, the cleave of one plate 1 is integrated with each tenon 10 to 12 so as to be hidden from the outside in the joined state, and is identical to the outer surface of plate 1. A hidden wall 14 having the same height as each tenon 10-12 is formed so as to form the outer surface of the mortar. Therefore, when the tenons 10 to 12 are pushed into the corresponding insertion grooves 20 to 22 and the plates 1 and 2 are cross-joined, the tenons 10 to 12 are not visible from the outside of the plate 1, so-called mortise mortise joints. It becomes a joint structure of a shape. Other configurations, operations, and effects of the joint structure of this embodiment are the same as those of the joint structure of the first embodiment, and thus description thereof will be omitted.

Other Embodiments In the present invention, the middle tenon 12 and the corresponding insertion groove 22 can be omitted. In the above embodiment, the tenons 10 and 11 are formed so as to be inclined toward the center of the plate width. it can. How many pairs of tenons 10 and 11 are formed is appropriately designed depending on the width of the plates 1 and 2 to be joined. If the width of the plates 1 and 2 is large, the tenons 10 and 11 and the corresponding tenants are correspondingly designed. Several pairs of insertion grooves 20, 21 can be formed.

[0014]

[Effect of the invention]

 According to the joint structure of the plate according to the present invention, a pair of tenons 10 and 11 formed at the opening of one plate 1 and a pair of insertion grooves 20 formed at the opening of the other plate 2 correspondingly. , 21 are symmetrically inclined by predetermined angles θa, θb with respect to the plate width direction a and the plate thickness direction b, respectively, and push the tenons 10, 11 into the corresponding insertion grooves 20, 21. Even if an external force is applied to the plate 1 or the plate 2 in the direction in which the tenons 10 and 11 come out of the insertion grooves 20 and 21, the tenons 10 and 11 come out of the corresponding insertion grooves 20 and 21 respectively. Therefore, the plates 1 and 2 are strongly and more reliably cross-joined without loosening of the joint over time.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view of a cross-joined structure according to an embodiment corresponding to the first and second aspects of the present invention.

FIG. 2 is a partial perspective view of the plate of FIG. 1 in a cross joined state.

FIG. 3 is a partially exploded perspective view of a cross joint structure according to an embodiment corresponding to the invention of claim 3;

FIG. 4 is a partial perspective view of a cross joint structure according to an embodiment corresponding to the invention of claims 4 and 5;

FIG. 5 is a partially exploded perspective view of a cross joint structure according to an embodiment corresponding to the invention of claim 7;

FIG. 6 is a partial perspective view of the plate of FIG. 5 in a cross joined state.

FIG. 7 is a partial perspective view of a cross joint structure according to an embodiment corresponding to the invention of claim 6;

FIG. 8 is a partially exploded perspective view showing an example of a conventional cross joining structure of plates.

[Explanation of symbols]

 a Plate width direction b Plate thickness direction θa Mortgage inclination angle with respect to plate width direction θb Mortise inclination angle with respect to plate thickness direction 1 One plate 2 The other plate 10, 11, 12 Mortise 20, 21, 22 Insertion grooves 13, 23 Inclined surface 14 Hidden wall 24 Hidden bottom 3,4 plate 30 Ant mortise 40 Ant groove

Claims (7)

[Utility model registration claims] At least one pair of tenons 10 and 11 which are symmetrically inclined at predetermined angles θa and θb with respect to a width direction a and a thickness direction b, respectively, are formed at the opening of the board 1. Each tenon 10, 11 is the corresponding tenon 10, 11
Characterized in that they are pushed into respective insertion grooves 20, 21 formed in the opening of the other plate 2 from one side of the other plate 2 so as to fit the two plates. 2. A mortise 12 is formed at the opening of the one plate 1 between the pair of tenons 10 and 11 along the plate thickness direction b and perpendicular to the plate width direction a. The vertical tenon 12 is pressed into the vertical insertion groove 22 formed in the opening of the other plate 2 from the one side surface so that the tenon 12 fits. Item 4. A cross-joined structure of plates according to Item 1. 3. A 45 ° inclined surface 13 or 23 is formed at one end of the one board 1 and the other board 2 in the board width direction at the edge of the wood so as to fit and contact each other. The cross joining structure of plates according to claim 1 or 2, characterized in that: 4. The cut edge of the one plate 1 and the other plate 2 has a 45 ° inclined surface 1 so as to fit and contact each other.
3, 23 are respectively formed,
A cross joining structure for plates according to claim 1 or 2. 5. Each of the tenon of the one plate 1 and each of the insertion grooves of the other plate 2 are formed so as not to be seen from the outside when the two plates 1 and 2 are cross-joined. The cross-joined structure of plates according to claim 4. 6. The tenon of the one plate 1 is formed so as not to be seen from the outside of the one plate 1 when the two plates 1 and 2 are cross-joined. 3. The cross-joined structure of plates according to 1 or 2. 7. Each of the tenon of the one plate 1 and each of the insertion grooves of the other plate 2 are formed so as not to be seen from the outside when the two plates 1 and 2 are cross-joined. 3. The cross-joined structure of plates according to claim 1 or 2, wherein