JPS637902A - Warpage correcting device for board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

(Prior art and its problems) Recently, various types of storage furniture tend to be larger so that they can effectively utilize the space from the floor to the ceiling, and therefore the doors used have also become taller. The problem of warped doors has come into focus.

Previously, doors with warpage exceeding the allowable range were treated as defective products, but even doors that were installed on products with warpage within the allowable range could become warped due to changes in the humidity and dryness of the installation location, requiring replacement. There was also the possibility that something would become necessary.

(Means for Solving the Problems) The present invention proposes a board warping correction device capable of solving the above-mentioned conventional problems, and its feature is that the inner end is connected by a turnbuckle. 2 with opposite threads
The screw shaft of the book is loosely fitted together with the tarbuckle into a recessed groove formed on one side of the plate, and the outer end of the screw shaft is inserted into the large recesses formed at both ends of the recessed groove. A recessed groove cover fixed in a position covering the turnbuckle is fitted with a locking member having a nut fixing groove that non-rotatably holds the turnbuckle in place. 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.

(Embodiment) An embodiment of the present invention will be described below based on the attached illustrative drawings. In FIGS. 1 and 2, 1 is a door plate, and its pivot side and On the back surface close to the free side 1a on the opposite side, there is a linear recessed groove 2 parallel to the free side 1a (in the m height direction), and a huge circular shape that communicates with both the upper and lower ends of this recessed groove 2. A recessed portion 3 is formed. Reference numerals 4a and 4b are threaded shafts having opposite threads, and the inner ends thereof are screwed into threaded holes 5a and 5b of the turnbuckle 5, respectively, which have opposite threads. 6 is a locking member, and the circular protrusion 6a that fits into the huge circular recess 3 is temporarily attached to the rectangular shape by 6.
b, which protrudes from the back surface of the circular protrusion 6a.
As shown in FIGS. 3 and 4, there is a screw shaft support hole 7 in the vertical direction, and a nut fixing 1 and 8 formed to intersect approximately the center of the screw shaft support hole 7. A screw hole 9a of a nut 9, which is provided and non-rotatably fitted into the nut fixing groove 8, is located concentrically with the screw shaft bearing hole 7. Numeral 8a is a nut locking convex portion projecting from both sides of the nut fixing groove 8, and by elastically deforming the nut locking convex portion 8a and pushing the nut 9 to a predetermined position in the nut fixing groove 8. , the nut 9 can be fixed in a predetermined position.

The two locking members 6 configured as described above are provided by inserting the outer ends of the screw shafts 4a and 4b into the respective screw shaft bearing holes 7,
With the nut 9 fitted and fixed in the nut fixing groove 8 as described above screwed and passed through, the circular protrusion 6a is fitted into the enlarged circular recess 3 at both ends of the recessed groove 2 to form a rectangular shape. The peripheral mounting of the plate 6b is fixed to the back surface of the door plate 1 using the holes 6C with wood screws. As a result, the screw shaft 4a.

4b and the turnbuckle 5 are loosely fitted into the recessed groove 2. 10 is a recessed groove cover fixed to the back surface of the temporary door body 1 at a position covering the turnbuckle 5, as shown in FIGS. 2 and 5. As shown in FIG. 7, a turnbuckle detent recess 11 into which the entire length of the turnbuckle 5 fits and locks the turnbuckle 5 in a fixed position so that it can only rotate, and a periphery near one end of the turnbuckle 5 A positioning protrusion 12 that fits into a circumferential groove 5c formed on the surface 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 a turnbuckle rotation operation window 13 provided at a corresponding position, and displays 14a and 14b showing the relationship between the turnbuckle rotation operation direction and the expansion and contraction direction of both screw shafts 4a and 4b. is attached to the back surface of the door plate 1 with wood screws using the holes 10a.

Reference numeral 15 designates a band-shaped cover that covers the recess f42 between the locking member 3 and the recessed groove cover 10.

In the warpage correction device configured as described above, the turnbuckle 5 is displayed by inserting an appropriate rod-like body into the rotation operation through hole 5d of the turnbuckle 5 through the turnbuckle rotation operation window 13 of the recessed groove cover 10. 14a or 14b, both screw shafts 4a and 4b are pulled toward the side where the turnbuckle 5 is located, and as a result, the upper and lower portions 2 near the back surface of the door plate 1 to which the locking member 6 is attached The parts are drawn together via the screw shafts 4a, 4b and the nut 9. Conversely, when the turnbuckle 5 is rotated in the extending direction according to the display 14a or 14b, the locking member 6
Two upper and lower parts near the back surface of the temporary door body 1 to which the door temporary body 1 is attached are pushed apart from each other via the screw shafts 4a, 4b and the nut 9.

Therefore, when the door plate 1 is warped so that the surface is concave, rotate the turnbuckle 5 in the shrinking direction, and conversely, when the door plate 1 is warped so that the surface is protruded, ,
By rotating the turnbuckle 5 in the direction of extension,
It is possible to remove the warpage of the door plate 1 and correct it into a flat plate without warp.

Incidentally, even if the screw shafts 4a and 4b rotate together with the turnbuckle 5, the locking member 6
By screwing the nut 9 fixed to the
When the screw shafts 4a, 4b extend and contract with respect to the turnbuckle 5, the locking member 6 moves with respect to the screw shafts 4a, 4b via the nut 9 in the same direction, thereby performing the desired warp correction action. I can make it happen. Further, as in the above embodiment, the cover 10 is provided with displays 14a, 14b indicating the relationship between the turnbuckle rotation operation direction and the expansion/contraction direction of both screw shafts 4a, 4b.
When providing a means (circumferential groove 5c of turnbuckle 5 and positioning protrusion 12 of cover 10) for adjusting the direction of the turnbuckle 5 to the direction of the turnbuckle 5, the display 14a, 14b and the actual screw shaft 4a, 4b should be provided. There is no possibility that the cover 10 will be erroneously attached so that the direction of expansion and contraction is different from that of the cover 10.

(Operations and Effects of the Invention) According to the board warp correction device of the present invention that can be implemented as described above, the warp can be corrected 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 without any cracks. 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 it may become unusable due to warping. You will no longer be forced to replace it.

[Brief explanation of drawings]

Figure 1 is a front view of the used state, the second lever is an enlarged longitudinal cross-sectional side view of the main part, Figure 3 is a rear view of the locking member, Figure 4 is a cross-sectional plan view of the same, and Figure 5 is a turnbuckle. Rear view of the covering cover,
6 to 8 are large-scale cross-sectional views of each region of FIG. 1, respectively. DESCRIPTION OF SYMBOLS 1... Door plate body, 2... Linear recessed groove, 3... Huge circular recessed part, 4a, 4b... Spiral shaft, 5... Turnbuckle, 5d... Turnbuckle Through hole for rotation operation, 6... Locking member, 7... Screw shaft support hole, 8... Nut fixing groove, 9... Nut, 10. Is... Concave groove cover, 11... Concave portion for stopping turnbuckle, 1
3... Turnbuckle rotation operation window, 14a, 14b.
...Display showing the relationship between the direction of rotation of the turntable and the direction of expansion and contraction of both screw shafts 4a and 4b.

Claims (1)

[Claims] Two screw shafts with opposite threads connected at their inner ends by a turnbuckle are loosely fitted together with the tarbuckle into a recessed groove formed on one side of the plate, and each screw shaft is attached to each end of the recessed groove. A locking member having a nut fixing groove for non-rotatably holding the nuts screwed onto the outer ends of the screw shafts in a fixed position is fitted and fixed into the formed large recessed part, and the turnbuckle is fixed. A board warping correction device comprising a turnbuckle movement stopper that locks the turnbuckle in a fixed position so that the turnbuckle can only be rotated, and a rotation operation window for the turnbuckle, on a recessed groove cover fixed at a position covering the turnbuckle. .