JPH0475991B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used by being attached to large doors, etc. of various types of storage furniture (including built-in furniture) in order to correct warping of the doors, etc. This invention relates to a warpage correction device.

(Prior art and its problems) Recently, various types of storage furniture have tended to become larger in order to make effective use of the space from the floor to the ceiling, and the doors used have also become taller. , the problem of warped doors has become a focus of much attention.

Previously, doors that warped beyond the allowable range were treated as defective products, but even doors that were installed on products with warpage within the allowable range were found to warp significantly due to changes in the humidity and dryness of the installation location. There was also a risk that a situation would arise that would require replacement.

(Means for Solving the Problems) The present invention proposes a plate warping correction device capable of solving the above-mentioned conventional problems. Two screw shafts with opposite threads are loosely fitted together with the terbuckle into a recessed groove formed on one side of the plate. A recessed groove cover is fixed in a position covering the turnbuckle by fitting and fixing a locking member having a nut fixing groove that non-rotatably holds nuts screwed onto the outer ends of the screw shafts in fixed positions. for,
The present invention includes a turnbuckle movement stopper that locks the turnbuckle in a fixed position so that it can only be rotated, and a rotation operation window for the turnbuckle.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.
is a plate for a door, and on the back surface near the free side 1a opposite to the pivot side, there is a linear recessed groove 2 parallel to the free side 1a (in the door height direction). A large circular recessed portion 3 communicating with both upper and lower ends of the recessed groove 2 is formed. Reference numerals 4a and 4b are screw shafts with opposite threads, and their inner ends are screwed into screw holes 5a and 5b of the turnbuckle 5, respectively, with opposite threads. Reference numeral 6 denotes a locking member, which has a circular protrusion 6a that fits into the large circular recess 3 and protrudes from the back surface of the rectangular mounting plate 6b. and the fourth
As shown in the figure, a screw shaft support hole 7 in the vertical direction and a nut fixing groove 8 formed to intersect with the approximate center of the screw shaft support hole 7 are provided. The screw hole 9a of the nut 9, which is fitted in a non-rotatable manner, is located concentrically with the screw shaft bearing hole 7. 8a is nut fixing groove 8
Nut locking convex portions protrude from both side surfaces of the nut 9. By elastically deforming the nut locking convex portions 8a and pushing the nut 9 to a predetermined position within the nut fixing groove 8, the nut 9 can be held in a predetermined position. Can be fixed in position.

The two locking members 6 configured as described above are
Insert the outer ends of the screw shafts 4a and 4b into the respective screw shaft bearing holes 7, and screw them through the nut 9 which is fitted and fixed in the nut fixing groove 8 as described above, The circular projections 6a are fitted into the large circular recesses 3 at both ends of the recessed groove 2, and are fixed to the back surface of the door plate 1 using wood screws using the peripheral mounting holes 6c of the rectangular mounting plate 6b. As a result, the screw shaft 4a,
4b and the turnbuckle 5 fit loosely into the recessed groove 2.

10 is a recessed groove cover fixed to the back surface of the door plate 1 at a position covering the turnbuckle 5, and as shown in FIGS. 2 and 5 to 7, the entire length of the turnbuckle 5 is fitted. and a turnbuckle detent recess 11 that locks the turnbuckle 5 in a fixed position so that it can only rotate.
A positioning protrusion 12 that fits into a circumferential groove 5c formed on the circumferential surface near one end to align the direction of the turnbuckle 5 with that of the cover 10, and a through hole 5d for rotation operation formed in the center of the turnbuckle 5. It is equipped with turnbuckle rotation operation windows 13 provided at corresponding positions, and displays 14a and 14b showing the relationship between the turnbuckle rotation operation direction and the expansion and contraction directions of both screw shafts 4a and 4b, and mounting holes 10a provided around the periphery. Use wood screws to attach door plate 1
is attached to the back of the

Reference numeral 15 denotes a band-shaped cover that covers the recessed groove 2 between the locking member 3 and the recessed groove cover 10.

In the warpage correction device configured as described above, a suitable rod-shaped body is inserted into the rotation operation through hole 5d of the turnbuckle 5 through the turnbuckle rotation operation window 13 of the recessed groove cover 10, and the turnbuckle 5 is displayed 14a or 14b. When the screw shafts 4a and 4b are rotated in the direction of contraction, the screw shafts 4a and 4b are pulled toward the side where the turnbuckle 5 is located, and as a result, the upper and lower two locations near the back surface of the door plate 1 to which the locking member 6 is attached are They are attracted to each other via the screw shafts 4a, 4b and the nut 9. On the contrary, turnbuckle 5
When rotated in the extending direction according to the display 14a or 14b, two screw shafts 4a, 4b near the back surface of the door plate 1 to which the locking member 6 is attached
and are pushed apart from each other via the nut 9.

Therefore, when the door plate 1 is warped so that the surface is concave, the turnbuckle 5 is rotated in the shrinking direction, and the door plate 1 is warped so that the surface protrudes.
When the door plate 1 is warped, by rotating the turnbuckle 5 in the direction of extension, the warp of the door plate 1 can be removed and the door plate 1 can be corrected into a flat plate without warp.

Even if the screw shafts 4a and 4b rotate together with the turnbuckle 5, the nut 9 fixed to the locking member 6 is screwed into the screw shafts 4a and 4b, so that the turnbuckle 5 does not rotate. On the other hand, when the screw shafts 4a, 4b extend and contract, the locking member 6 moves relative to the screw shafts 4a, 4b via the nut 9 in the same direction, thereby performing the desired warpage correction action. Further, as in the above embodiment, there is provided a means for aligning the orientation of the cover 10 with the orientation of the turnbuckle 5, which is provided with displays 14a, 14b indicating the relationship between the turnbuckle rotation operation direction and the expansion/contraction direction of both the screw shafts 4a, 4b. When providing the circumferential groove 5c of the turnbuckle 5 and the positioning protrusion 12) of the cover 10, the display 14a, 14b and the actual screw shaft 4
There is no possibility that the cover 10 will be erroneously attached so that the directions of expansion and contraction of a and 4b are different from each other.

(Operations and Effects of the Invention) According to the board warp correction device of the present invention which can be implemented as described above, it is possible to eliminate warpage by simply rotating the turnbuckle in accordance with the direction of warp of the board to which the device is attached. It can be straightened into a flat plate. Therefore, even boards that are slightly warped can be effectively used for furniture doors, etc., and even if the board is warped due to the usage environment, the warp can be easily corrected, so that the warp can be easily corrected. It will no longer become unusable or have to be replaced.

[Brief explanation of drawings]

Figure 1 is a front view in use, Figure 2 is an enlarged longitudinal cross-sectional side view of the main parts, Figure 3 is a rear view of the locking member, Figure 4 is a cross-sectional plan view of the same, and Figure 5 covers the turnbuckle. The rear view of the cover and FIGS. 6 to 8 are enlarged cross-sectional views of various parts of FIG. 1, respectively. 1... Door plate, 2... Linear recessed groove, 3...
Huge circular recessed portion, 4a, 4b...screw shaft, 5...turnbuckle, 5d...through hole for turnbuckle rotation operation, 6...locking member, 7...screw shaft support hole,
8... Nut fixing groove, 9... Nut, 10, 15
. . . Recessed groove cover, 11 . . . Concave portion for stopping turnbuckle movement, 13 . . . Turnbuckle rotation operation window, 14a, 14b . . . Display showing the relationship between the turnbuckle rotation operation direction and the expansion/contraction direction of both screw shafts 4a, 4b. .

Claims (1)

[Claims] 1. Two screw shafts with opposite threads connected to each other at their inner ends by a turnbuckle are loosely fitted into a recessed groove formed on one side of the plate together with the terbuckle,
A locking member provided with a nut fixing groove for non-rotatably holding the nut screwed onto the outer end of the screw shaft in a fixed position is provided in each of the large recesses formed at both ends of the recessed groove. The recessed groove cover that is fitted and fixed in a position covering the turnbuckle is provided with a turnbuckle movement stop that locks the turnbuckle in a fixed position so that it can only be rotated, and a plate that is provided with a rotation operation window for the turnbuckle. Warp straightening device.