JPH0524806Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a mounting structure for wedge bolts for assembling and fixing pieces of wood at right angles to each other.

[Prior Art] Conventionally, in order to assemble and fix pieces of wood at right angles to each other, a relatively deep dovetail groove is formed on the side of one piece of wood, and the dovetail groove is formed on the end of the piece of wood that is attached at right angles to this piece of wood. A tenon was formed that fit snugly into the dovetail, and the tenon was fitted into the dovetail groove, and a hammer was driven into the dovetail to secure it in place.

However, the depth of this dovetail groove and the height of the tenon must be relatively large to ensure a strong joint, which has the disadvantage of greatly reducing the strength of the wood on which the dovetail groove is formed. At the same time, the dovetail groove and tenon require high machining accuracy, time is required for machining, and the machining cost increases.

[Problems to be solved by the invention] The present invention eliminates the drawbacks of the conventional technology described above, and allows wood to be processed at angles to each other, which can be processed with relatively low processing accuracy, has low strength loss, has good productivity, and is inexpensive. The object of the present invention is to provide a mounting structure for wedge bolts that can be combined and joined without any problems.

[Means and effects for solving the problem] The present invention includes a base portion forming a wedge, and an arm having a bent portion extending right and left from the upper end thereof at right angles to form a hook, and the lower edge portion of the arm is By forming a corrugated edge of gradually decreasing thickness and driving the base between the inclined side edge end faces of a dovetail groove and tenon located in the same plane of two materials that are attached at right angles to each other. , this is compatible with the strong fixing action between the dovetail groove and tenon due to the wedge-shaped shape of the base, and the strong fixing action between the two due to the wavy edge biting into the side surfaces of the two combined materials. Together, these two
This is achieved by providing a wedge-shaped mounting structure that allows extremely strong and tight bonding of two materials by only one driving operation.

According to the wedge hook mounting structure of the present invention configured as described above, by driving the base of the wedge hook between the wedge surfaces of the dovetail groove and tenon, which have a relatively large play, the dovetail groove and the tenon can be attached. The tenons are closely and firmly fitted, and in addition to the strong fixation of the wood that is joined by driving the bent end of the lumber that forms the lumber into the lumber, it is also formed on the lower edge of the arm of the wedge lance. By cutting into the wood, the corrugated edges provide a much stronger tightening effect on the wood.

[Example] Fig. 1 is a front view of a wedge bolt used in the wedge bolt mounting structure of the present invention, which is composed of an integral base 1 and a pair of arms 2a and 2b forming a T-shape as a whole. . The ends of the arms 2a and 2b are respectively formed with bent ends 3a and 3b, each having a sharp tip that forms a hook, and the lower end of the base 1 is tapered to make it convenient to drive the base 1. A portion 1a is formed. It is advantageous in terms of strength to form an appropriate curved portion at the joint between the base 1 and the arms 2a, 2b.

According to the feature of the present invention, the lower edges of the arms 2a and 2b have corrugated tapered edges 2 as shown in FIG.
c is formed.

When using the wedge hook mounting structure according to the present invention,
As shown in FIG. 4, for example, a relatively shallow dovetail groove 5 is formed on the side surface of the crosspiece 4, and a relatively low-height tenon 8 that loosely fits into the dovetail groove 5 is formed on the vertical beams 6 and 7. .

After fitting the dovetail grooves 5 and tenons 8 of these horizontal beams 4 and vertical beams 6 and 7, respectively, the base 1 of the wedge hammer of the present invention is driven into the gap g between the wedge surfaces of the dovetail grooves 5 and tenons 8. The bent ends 3a, 3b of the arms 2a, 2b and the arms 2a,
The lower edge 2c of the waveform of 2b is dug into the wood,
Drive until the upper ends of arms 2a and 2b are flush with the surface of the wood. This condition is shown in FIG.

The base 1 is driven into the gap g between the wedge surfaces of the groove 5 and the tenon 8, thereby forming the dovetail groove 5 and the tenon 8.
In addition to the tightening effect of the bent ends 3a and 3b being driven in, the corrugated lower edge 2c bites into the wood, creating extremely strong horizontal and vertical beams. Joining of trees 6 and 7 is performed.

Crosspiece 4 and vertical beams 6, 7 joined as described above
If a conventional battledore bolt or the like is used, it can be fixed even more firmly.

[Effects of the invention] Since the present invention is constructed as described above, even if the machining accuracy of dovetail grooves and tenons is relatively low, the base can be formed extremely easily and efficiently by driving the wedge hammer in one motion. It is press-fitted into the wedge surface of the groove and tenon to ensure a tight fit, and the bent end and the corrugated lower edge bite into the wood, making the joint between the pieces of wood extremely strong. Since relatively shallow dovetail grooves can be used, the strength of the wood treated with the dovetail grooves is less likely to deteriorate, and an excellent effect can be obtained in which wood can be reliably joined at a low cost.

[Brief explanation of drawings]

Fig. 1 is a front view of the wedge bolt used in the mounting structure of the present invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 is shown in Fig. 1 as seen in the direction of the arrow - in Fig. 1. Fig. 4 is a front view showing the processing state of the wood to which the wedge carcass shown in Fig. 1 is applied, and Fig. 5 is an end view of the wedge carcass.
FIG. 2 is a front view showing a state in which the wedge bolt shown in FIG. 1 is applied to the wood shown in the figure. 1...Base, 1a...Tapered part, 2a, 2b
...Arm, 2c... Wavy, tapered edge, 3a, 3
b...bent end forming a hook, 4...crosspiece, 5...
...dovetail groove, 6,7...vertical, 8...tenon, g...
gap.

Claims (1)

[Scope of utility model registration request] It includes a base forming a wedge, and an arm having a bent part extending from the upper end at right angles to the left and right to form a hook. A dovetail groove and a tenon due to the wedge-shaped shape of the base are formed on the edge and the base is driven between the inclined side edge surfaces of the dovetail groove and tenon located on the same plane of two materials attached at right angles to each other. Coupled with the strong fixing action between the tenons and the strong fixing action of the two combined materials due to the biting of the corrugated edge into the side surfaces of the two combined materials, these two
A mounting structure for a wedge bolt, which is characterized by making possible extremely strong and tight joining of two materials by only one driving operation.