JPH0434741Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a wooden base plate that can be suitably used as a chair seat, a table top, etc.

(Prior art and its problems) Seat boards for wooden chairs, top boards for wooden tables, etc. are made from a single board, or multiple boards are glued together using an adhesive to form a board of the required size. It is used as a body.

However, using a single board is expensive because it must be cut from a large diameter piece of wood.
In addition, the fact is that it is becoming increasingly difficult to obtain such large-diameter wood as wood resources are decreasing.

On the other hand, the use of a plurality of boards joined together is advantageous in terms of cost because it allows use of small-diameter trees that cannot be effectively used as board materials, pillar materials, etc.
However, conventionally, in order to join multiple plates using adhesive, a channel is provided on the joining surface of one board, and a protrusion that fits into the channel is provided on the joining surface of the other board. Generally, adhesive is applied to the joint surfaces for joining, which has the problem of being weak in strength. In other words, if the channel and protrusion on the joint surface are simply fitted and bonded with adhesive, the adhesive force of the adhesive will only resist the force in the direction of separation of the channel and protrusion, which is extremely difficult. The problem is that they are easy to separate.

Furthermore, in order to increase the above-mentioned adhesive strength, a large amount of adhesive is inevitably used, and there is also the problem that warping is likely to occur when the adhesive dries.

(Summary of the invention) This invention relates to the improvement of a base plate having a structure for joining a plurality of plates as described above, and its purpose is to achieve an extremely high joint strength, and a structure that also increases the overall strength of the board. To provide a large base plate, its feature is that a frame component plate consisting of three or more pieces of exposed wood formed in the same shape with tenons and mortise holes is engaged with the tenons and mortise holes. A polygonal frame is formed by joining the ends, and a solid wood plate is fitted in the central space of the frame, and the inner end surface of the frame and the corresponding outer end surface engage in a concave-convex manner. It is about to become.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 shows an exploded view of the base plate according to the present invention.

In the figure, 10a, 10b, and 10c are frame component plates. These frame body constituent plates 10a, 10b, 1
Each of the 0c's is made of peeled wood cut from small-diameter trees, so a narrow one will suffice. Alternatively, the remaining small pieces of unnecessary board materials may be effectively used. However, the frame body constituent plates 10a, 10
b and 10c are thick enough to provide the necessary strength when configured as a base plate.

The frame body constituent plates 10a, 10b, and 10c form a triangular frame body 10 by joining their respective end faces (FIG. 2).

In this case, frame body constituent plates 10a, 10b, 10
Tenons 12a, 12b, 1 provided on one end surface of c
2c to the adjacent frame body constituent plates 10a, 10b, 1
Tenon holes 14a, 1 provided on the corresponding joint surfaces of 0c
4b and 14c to form the frame 10.

Each frame component plate 10 that constitutes the inner surface of the frame 10
Channels 16 are provided on the inner end surfaces of a, 10b, and 10c.
a, 16b, and 16c are formed.

Reference numeral 18 denotes a plate having the same outer shape as the space of the frame 10, and each end face of the plate 18 has protrusions 20a, 20b, 20c that can fit into the channels 16a, 16b, 16c of the frame 10. It is provided.

Therefore, first, after joining the two frame body constituent plates, the plate body 18 is fitted so that its protrusion fits into the channel of the two frame body constituent plates, and then the remaining frame body constituent plates are joined. By doing so, the base plate 22 can be constructed (FIG. 2).

A solid base plate can be obtained by applying the necessary adhesive to the tenons, mortises, channels, protrusions, etc. and then joining them together.

The outer shape of the base plate 22 configured as described above is not limited to a circle as shown in the drawings, but may be a square or any other arbitrary shape.

FIG. 3 shows frame body constituent plates 10a, 10b, 10c.
An example is shown in which both end faces of each are used as bonding surfaces.

FIG. 4 shows an example in which a frame is constructed using four frame body constituent plates. In this case, it is preferable that the tenon and mortise hole be provided at a slight inclination with respect to the end surface of the frame component plate, as shown in the drawing. Thereby, adjacent frame body constituent plates can be prevented from separating from each other. Figure 5 is 6
An example using two frame body constituent plates will be shown.

As mentioned above, the frame constituent plates used in the base plates of each example are all formed in the same shape including the tenons, mortise holes, and channels, and by combining the frame constituent plates, the outer shape of the base plate can be changed. It is configured so that it can form a frame part. Therefore, when constructing the base plate, it is sufficient to manufacture one type of standardized frame component plate having the same shape, thereby making it possible to easily manufacture the base plate.

6 and 7 show an embodiment in which the base plate 22 is used as a seat plate of a chair.

FIG. 8 shows an embodiment in which the base plate 22 is used as a top plate of a table.

In each of the embodiments described above, the plate 18 fitted into the central space of the frame 10 may be a single plate, or may be formed by appropriately joining small pieces as in the prior art. Further, since the plate member 18 is surrounded by the frame member 10 having a high strength, a thin plate member is used as long as the strength of the portion as a base plate is satisfied.

In addition, in the base plates shown in Figures 3 and 5, the protruding direction of the tenon was made to protrude in a direction almost perpendicular to the direction of the grain of the wood, but it is more advantageous in terms of strength to make it protrude in the direction of the grain of the wood. It is.

(Operation and Effect of the Invention) As described above, the base plate according to the present invention constitutes a polygonal frame by engaging three or more frame constituent plates formed in the same shape through tenons and mortise holes. , a plate body is fitted into the central space so that the inner end surface of the frame body and its corresponding outer end surface engage in a concave-convex manner, so that the frame-constituting plates are regulated by the end surfaces, tenons, and mortise holes. It has a solid structure and will not fall apart easily. Therefore, even if the joint surfaces are bonded with an adhesive, it can be firmly fixed with a small amount of adhesive, and since the amount of adhesive is also small, there is no risk of warping or the like occurring during drying. In addition, since the frame constituent plates forming the base plate are formed in the same shape,
Even when the base plate is manufactured in large quantities, it can be easily manufactured.

Furthermore, since it uses multiple plates, it goes without saying that small-diameter trees can be used effectively, but as mentioned above, the structure of the plate as a whole is solid and strong. Because of its large size, small-diameter trees such as locust acacia, which have not been effectively used in the past due to their inferior strength, can be effectively used as timber for peeling, which has the advantage of expanding the scope of use of natural materials.

Although the present invention has been variously explained above using preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of drawings]

Figure 1 is an exploded explanatory diagram of the wooden base plate according to the present invention.
FIG. 2 is an assembly diagram, and FIGS. 3, 4, and 5 are assembly diagrams showing other embodiments. FIG. 6 is a plan view showing an example of application to a chair, FIG. 7 is a side view thereof, and FIG. 8 is a front view showing an example of application to a table. 10... Frame body, 10a, 10b, 10c... Frame component plate, 12a, 12b, 12c... Tenon, 1
4a, 14b, 14c... mortise, 16a, 16
b, 16c... Channel, 18... Plate, 20
a, 20b, 20c...protrusion, 22...base plate.

Claims (1)

[Scope of claims for utility model registration] 3 formed in the same shape with a tenon and a mortise hole
A polygonal frame is constructed by connecting frame constituent plates made of a plurality of peeled materials through tenons and mortises and joining the ends, and a frame is placed in the central space of the frame. A wooden base plate formed by fitting solid wood plates in which the inner end surface of the body and the corresponding outer end surface engage with each other in a concave and convex manner.