JP5124833B2 - Warping correction structure of door body and door unit using the same - Google Patents

Description

  The present invention relates to a warp correction structure of a door body (particularly a hinged door) and a door unit using the warp correction structure.

  For example, for a door such as a door for entering and exiting a room, with respect to a door mounting portion such as a fixed frame that forms a rectangular opening, the thickness of the door (front and back of the worker facing the front of the door), width ( A hinge for enabling position adjustment (gap adjustment) in each of the same (left and right) direction and height (also up and down) direction is generally known. As a result, when installing the hinged door on the fixed frame, and when the hinged door or the fixed frame is deformed or the installation position of the hinged door is shifted due to use, the hinged door and the fixed frame can be opened and closed smoothly. Can be adjusted within a predetermined range (see Patent Document 1).

  On the other hand, such hinged doors are prone to warp in the thickness direction due to manufacturing errors, their own weight, internal and external temperature differences, etc., regardless of whether they have been used for many years after installation, especially for large and heavy wooden doors. Appear in. Therefore, even if the position adjustment of the above three directions of the hinged door is appropriately performed, the building may be deteriorated or the appearance may be deteriorated due to the warp in the thickness direction. Therefore, in order to correct such warpage in the thickness direction in the hinged door, a locking portion (frame-side correction member) protruding outward is provided at the intermediate portion of the vertical frame (fixed frame), and a shoji (folding door) It is disclosed that a concave portion (a shoji side correction member) that engages with a locking portion is provided in the pivot attachment side shaft (see Patent Document 2).

Japanese Patent No. 3798416 Japanese Patent No. 2726013

  According to the warp correction structure as in Patent Document 2, warpage in the thickness direction caused by a temperature difference between the inside and the outside can be corrected by the R surfaces formed respectively in the locking portion and the recess. However, in the warp correction structure of Patent Document 2, since the shoji is opened and closed in a state in which the locking portion and the concave portion are fixed to the vertical frame and the vertical hook, respectively, when warping in the thickness direction is expanded by use, There is a possibility that the locking portion and the recess cannot be engaged or the engagement between the locking portion and the recess cannot be released, and the warp correction structure does not function. Also, for example, when adjusting the position of the shoji in the thickness direction or width direction (gap adjustment) at the time of installation or the like, the engaging portion and the recessed portion cannot be engaged, or the engaging portion and the recessed portion There is a possibility that the warp correction structure may not function because the engagement cannot be released. Therefore, depending on the conditions of use, the shoji cannot be moved from the open position to the closed position even in a relatively short period of time. It will be necessary to exchange (the locking portion and the concave portion).

  An object of the present invention is to easily correct a warp in a thickness direction generated in a door body such as a hinged door with a simple configuration using a permanent magnet, and to stably perform such a warp correction function over a long period of time. It is providing the door unit using the curvature correction structure of the door body which can be exhibited, and the curvature correction structure.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the warp correction structure of the door body of the present invention is:
A door body such as a hinged door that can be opened and closed around a rotation axis between a closed position that closes the opening and an open position that opens the door mounting portion such as a fixed frame that forms a rectangular opening. A straightening structure for correcting warping in the thickness direction,
A movement that is attached to either one of the door mounting portion and the door body and moves linearly by protruding when the door body moves to the closed position and retreating when the door body moves to the open position. Body,
A holding body that is fixed to the other side of the door mounting portion and the door body and has a recess for inserting and holding the projecting moving body (the front end portion thereof),
One of the moving body and the holding body includes a permanent magnet magnetized to a predetermined polarity, and the other of the moving body and the holding body has a magnetic induction action from the magnetic field of the permanent magnet. Including an attracted part that can be attracted to the permanent magnet by receiving and magnetizing,
When the door body moves from the open position to the closed position, the attracted portion increases the degree of magnetic induction by the permanent magnet as it approaches the permanent magnet (directly or otherwise). While adsorbing indirectly (through the member)
When the door body moves from the closed position to the open position, the attracted portion is separated from the permanent magnet by decreasing the degree of magnetic induction by the permanent magnet as it is separated from the permanent magnet. Features.

  In such a warp correction structure, either one of the moving body (for example, the shaft) and the holding body (for example, the casing) includes a permanent magnet (for example, a neodymium magnet), and the other is an attracted portion that can be attracted to the permanent magnet ( For example, a horizontal bar). Even in such a simple configuration, as the door body (for example, a hinged door) moves from the open position to the closed position, the attracted portion protrudes and is attracted to the permanent magnet (directly or indirectly via another member). On the other hand, as the door body moves from the closed position to the open position, the attracted part retreats and separates from the permanent magnet. Therefore, each time the door body is moved (rotated) to the closed position, the permanent magnet causes the moving body to protrude and attract the attracted portion, so that the warp in the thickness direction of the door body tends to increase with use. Even if it becomes, the correction of curvature can be stably performed by the attractive force of the permanent magnet. Also, when the door body is adjusted in the thickness direction or width direction (gap adjustment) with respect to the door mounting part (for example, a fixed frame) at the time of installation, etc., the warp is corrected by the attractive force of the permanent magnet. It can be done stably. In addition, the warp correction structure can be switched between activation and deactivation simply by moving the movable body with a permanent magnet in accordance with the closing / opening operation of the door body, so that the warp correction function can be exhibited stably over a long period of time. it can.

In the above warp correction structure,
(A) When attaching a moving body (shaft) to a door body (folding door), and fixing a holding body (casing) to a door attachment part (fixed frame);
(B) When a moving body (shaft) is attached to the door mounting portion (fixed frame) and the holding body (casing) is fixed to the door body (folding door);
Is included.

In each of the warp correction structures (A) and (B),
(A) A case in which the holding body (casing) includes a permanent magnet, and the moving body (shaft) includes an attracted portion;
(B) A case in which the moving body (shaft) includes a permanent magnet, and the holding body (casing) includes an attracted portion;
Is included.

  Furthermore, when the door body (folding door) is a door for entering and exiting a room, the “rectangular opening” formed in the door mounting portion (fixed frame) has a long side in the height (vertical) direction and a width ( The left / right direction forms a short side entrance. By the way, a permanent magnet and a moving body (adsorbed portion) are generally made of a ferromagnetic material. The permanent magnet is made of a hard magnetic material such as a neodymium magnet, a ferrite magnet, an alnico magnet, KS steel, or MS steel, while the moving body (adsorbed portion) is made of iron, silicon steel, permalloy, or the like. A soft magnetic material is used.

Moreover, in order to solve the said subject, the curvature correction structure of the door body of this invention is a case of said (A) as a concrete aspect, and in the case of said (a),
A door body such as a hinged door that can be opened and closed around a rotation axis between a closed position that closes the opening and an open position that opens the door mounting portion such as a fixed frame that forms a rectangular opening. A straightening structure for correcting warping in the thickness direction,
It is attached to the door body on one side of the door mounting portion and the door body, and protrudes when the door body moves to the closed position, and moves linearly by retreating when the door body moves to the open position. A moving object,
A holding body that is fixed to the door mounting section on the other side of the door mounting section and the door body and has a recess for inserting and holding the projecting moving body (the front end section thereof);
One holding body of the moving body and the holding body includes a permanent magnet magnetized to a predetermined polarity, and the other moving body of the moving body and the holding body is (a tip portion in the moving direction). A) a portion to be attracted that can be attracted to the permanent magnet by being magnetized by receiving a magnetic induction effect from the magnetic field of the permanent magnet;
When the door body moves from the open position to the closed position, the attracted portion increases the degree of magnetic induction by the permanent magnet as it approaches the permanent magnet (directly or otherwise). While adsorbing indirectly (through the member)
When the door body moves from the closed position to the open position, the attracted portion is separated from the permanent magnet by decreasing the degree of magnetic induction by the permanent magnet as it is separated from the permanent magnet. Features.

  In the warp correction structure, the holding body (for example, the casing) includes a permanent magnet (for example, a neodymium magnet), and the moving body (for example, the shaft) includes a portion to be attracted (for example, an iron rod at the tip of the shaft) that can be attracted to the permanent magnet. Even in such a simple configuration, as the door body (for example, a hinged door) moves from the open position to the closed position, the attracted portion protrudes and is attracted to the permanent magnet (directly or indirectly via another member). As the door body moves from the closed position to the open position, the attracted portion retreats and moves away from the permanent magnet. Therefore, each time the door body is moved (rotated) to the closed position, the permanent magnet causes the moving body to protrude and attract the attracted portion, so that the warp in the thickness direction of the door body tends to increase with use. Even if it becomes, the correction of curvature can be stably performed by the attractive force of the permanent magnet. Also, when the door body is adjusted in the thickness direction or width direction (gap adjustment) with respect to the door mounting part (for example, a fixed frame) at the time of installation, etc., the warp is corrected by the attractive force of the permanent magnet. It can be done stably. In addition, the warp correction structure can be switched between activation and deactivation simply by moving the movable body with a permanent magnet in accordance with the closing / opening operation of the door body, so that the warp correction function can be exhibited stably over a long period of time. it can.

  In these warp correction structures, it is desirable that the moving body is provided with urging means (for example, a compression coil spring) for urging the moving body in a retreating state at all times.

By providing such a biasing means,
When the door body moves from the open position to the closed position, the attracted portion applies the biasing force to the permanent magnet by increasing the degree of magnetic induction by the permanent magnet as it approaches the permanent magnet. While surpassing the force and adsorbing to the permanent magnet (directly or indirectly through other members)
When the door body moves from the closed position to the open position, the attracting force of the attracted part is applied to the permanent magnet by the degree of the magnetic induction action by the permanent magnet as the distance from the permanent magnet decreases. It is less than power and can be separated from the permanent magnet.

  By the way, in these warp correction structures, the portion to be attracted (for example, the tip of the shaft) differs between the permanent magnet and the permanent magnet by differentiating the polarities at the facing portions that face each other in the closed position. An auxiliary permanent magnet (for example, a neodymium magnet) for increasing the attraction force based on the magnetic action can be included.

  As a result, an attractive force based on the magnetic action between the permanent magnet and the auxiliary permanent magnet acts on the moving body in addition to the attractive force between the permanent magnet and the attracted part based on the magnetic induction action of the permanent magnet. As a result, the moving body (adsorbed portion) can move smoothly and stably. Since it can be selected from hard magnetic materials used for permanent magnets and applied to auxiliary permanent magnets, it is easy to reduce the size (diameter and thickness) of the permanent magnets and downsize the entire structure. It becomes.

Furthermore, the moving body is formed of a shaft-like member whose moving direction is the longitudinal direction, and the diameter-reducing portion that continuously decreases in diameter as the front end portion (for example, the attracted portion) facing the holding body moves toward the front end. While configured into
In the recessed portion of the holding body, a guide portion that is closer to the moving body is arranged closer to the front side in the insertion direction of the moving body with respect to the recessed portion in the closed state of the door body ,
When the door body moves from the open position to the closed position, it is desirable that the reduced diameter portion of the moving body is abutted and guided by the guide portion and inserted and held in the concave portion of the holding body.

By disposing such a guide portion in the concave portion of the holding body , the reduced diameter portion is brought into contact with the guide portion early when the door body is moved to the closed position, and the movable body is guided to the concave portion of the holding body. be able to. Therefore, even when the warpage of the door body in the thickness direction tends to expand, or when the door body is adjusted in the thickness direction (gap adjustment) with respect to the door mounting part, the permanent magnet is Can be stably adsorbed and the warping of the door body can be corrected.

  Specifically, the guide portion is formed (curved) so as to approach (asymptotically) approach the moving body toward the lower side of the moving body in the insertion direction with respect to the recess, and when the reduced diameter portion comes into contact, the moving body moves in the insertion direction. Guide and guide to the concave portion of the holding body while pulling.

  In the closed position, when the moving body is arranged orthogonal to the door mounting portion or the mounting surface of the door body, the suction of the attracted portion by the permanent magnet is stabilized. Further, if the maximum projected area of the permanent magnet is formed larger than the maximum projected area of the moving body on the surface orthogonal to the insertion direction of the moving body with respect to the recess, the warp in the thickness direction of the door body tends to expand. Even when the door body is adjusted or the position of the door body is adjusted in the thickness direction (gap adjustment) with respect to the door mounting part, the permanent magnet can attract the attracted part more stably and correct the warping of the door body. be able to.

  The reduced diameter portion of the guide portion and / or the moving body buffers sound and vibration generated by the contact between the reduced diameter portion of the movable body and the guide portion when the door moves from the open position to the closed position. It is preferable that the projection-side cushioning material is covered.

  Even if the reduced-diameter part and the guide part come into contact with each other due to the protrusion of the moving body, the protruding cushioning material suppresses the generation of unpleasant noise and vibration, so the door body warp correction structure operates in a quiet environment. Can be made. In addition, a polymeric material (for example, synthetic resin, such as a silicone resin) can be used for the protrusion side buffer material, and you may bake on the surface of the reduced diameter part of a guide part or a moving body. In addition, the protrusion-side cushioning material may cover the concave portion surface of the holding body. In this case, the sound and vibration generated when the reduced diameter portion of the movable body abuts the concave portion of the holding body is also suppressed. it can.

Furthermore, the moving body is housed in the case body in a form in which the reduced diameter portion protrudes to the opening side of the door mounting portion,
When the door moves from the closed position to the open position between the end surface opposite to the reduced diameter portion of the moving body and the inner surface of the case body facing the end surface, the end surface of the moving body and the inner surface of the case body It is preferable that a retreat-side cushioning material that cushions the sound and vibration generated by the abutment is disposed.

  Even if the end surface of the moving body comes into contact with the inner surface of the case body due to the retreat of the moving body (return by the biasing means), the retraction side cushioning material suppresses the generation of unpleasant noise and vibration, so The warp correction structure of the door body can be deactivated in a difficult environment. Specifically, the end surface opposite to the diameter-reduced portion of the moving body and / or the inner surface of the case body facing the end surface are arranged such that the end surface of the moving body and the case when the door body moves from the closed position to the open position. It may be covered with a retreat-side cushioning material that cushions sound and vibration generated by contact with the inner surface of the body. In this way, the entry-side cushioning material can be attached or baked on the end surface of the moving body or the inner surface of the case body. In addition, a polymeric material (for example, elastomers, such as foaming urethane rubber) can be used for the entrance side buffer material.

Then, in order to solve the said subject, the door unit of this invention is
The warp correction structure as described above,
Between the door mounting portion and the door body, the door mounting portion and the door body are relatively rotated around the rotation axis, and the door body is moved and adjusted at least in the thickness direction on a plane orthogonal to the rotation axis. A hinge unit having a possible position adjustment mechanism,
When the door body is viewed from the front in the closed position, the warp correction structure and the hinge are inserted in the opposite direction parallel to the mounting side of the door opening and closing knob, and the insertion direction of the movable body (the tip portion thereof) into the concave portion of the holding body Is arranged so as to cross (for example, orthogonally intersect) the rotation axis of the hinge.

  In this way, when the position adjustment mechanism (gap adjustment) of the door body (for example, a hinged door) is adjusted in the thickness direction with respect to the door mounting portion (for example, the fixed frame) by operating the hinge position adjustment mechanism at the time of installation work, etc. However, it is possible to stably correct the warp by the attractive force of the permanent magnet. Moreover, a warp correction structure and a hinge are arranged on the opposite side parallel to the mounting side of the door opening / closing knob, and the insertion direction of the moving body into the concave portion of the holding body intersects (for example, orthogonal) with the rotation axis of the hinge. . As a result, in the warp correction structure, the moving body (for example, shaft) or the holding body (for example, casing) attached to the door body has a relatively small turning radius when the door body is opened and closed. Positioning with the holding body or moving body to be performed becomes easy.

Or in order to solve the said subject, the door unit of this invention is the following.
The warp correction structure as described above,
Between the door mounting portion and the door body, the door mounting portion and the door body are relatively rotated around the rotation axis, and the door body is moved and adjusted at least in the thickness direction on a plane orthogonal to the rotation axis. A hinge having a possible position adjustment mechanism;
A guide unit adjusting mechanism capable of moving and adjusting the guide unit in the thickness direction of the door body in the closed position;
The door body can be moved and adjusted in the thickness direction by the hinge position adjusting mechanism, and the guide part can be moved and adjusted in the thickness direction of the door body by the guide part adjusting mechanism.

  In this way, when the position adjustment mechanism (gap adjustment) of the door body (for example, a hinged door) is adjusted in the thickness direction with respect to the door mounting portion (for example, the fixed frame) by operating the hinge position adjustment mechanism at the time of installation work, etc. Since the guide part can be moved and adjusted in the thickness direction of the door body by operating the guide part adjusting mechanism, the warp can be corrected stably over a wide range by the attractive force of the permanent magnet.

Example 1
Hereinafter, embodiments of the invention will be described with reference to the drawings. FIG. 1 is a front view and a side view showing a state in which the warp correction structure according to the present invention is attached to a hinged door and a fixed frame, FIG. 2 is a perspective view showing an attachment state of the warp correction structure in an open position of the door, and FIG. It is a plane sectional view showing an example of the attachment state of a curvature correction structure in the closed position of a hinged door.

  The door unit 1 shown in FIG. 1 and FIG. 2 is provided at the lower right portion of a hinged door 2 (door body) that can be opened and closed with respect to a fixed frame 5 (door mounting portion) that constitutes a vertically long rectangular opening (room entrance). A side hinge 3 (hinge) is attached, and an upper hinge 4 (hinge) is attached to the upper right part thereof. Specifically, a door knob 2c (opening / closing knob) is attached to an intermediate portion of the vertical side (longitudinal side) of the hinged door 2, and a lip 2a that forms an opposite side parallel to the vertical side and the lip 2a when the hinged door 2 is closed. The hinges 3 and 4 are attached across the vertical frame 5a of the fixed frame 5 opposite to the frame 5a. Thus, the hinged door 2 is operated in the vertical direction of the hinges 3 and 4 between the closed position (FIG. 1) for closing the opening of the fixed frame 5 and the open position (FIG. 2) for opening the fixed frame 5 by the operation of the door knob 2c. It can be opened and closed around the rotation axis O1.

  Further, the hinges 3 and 4 are arranged at the closed position of the hinged door 2 (room entrance) in order to finely adjust the front-rear gap S1, the left-right gap S2, and the vertical gap S3 (see FIG. 1) between the hinged door 2 and the fixed frame 5. A position adjustment mechanism is provided that can adjust the position of the hinged door 2 from the inside in three directions (thickness direction X, width direction Y, and height direction Z) (see FIG. 2). However, as the position adjustment mechanism for moving the hinged door 2 in the X, Y, Z3 directions, the one disclosed by the present applicant in Japanese Patent No. 3798416 (Patent Document 1) is employed as it is. Detailed description will be omitted. The rotation axis O1 of the hinged door 2 (hinges 3 and 4) is arranged along the height direction Z.

  Further, a warp correction structure 6 for correcting a warp in the thickness direction X of the hinged door 2 is provided at a middle position between the lower hinge 3 and the upper hinge 4. It is attached across 5a. The warp correction structure 6 includes a magnet case 10 (holding body) made of a polymer material (for example, a synthetic resin such as polyamide (PA)) embedded in a vertical frame 5a, and a metal (for example, a zinc die) embedded in a mouthpiece 2a. And a shaft case 20 (case body) made of a polymer material (for example, a synthetic resin such as polyamide (PA)).

  As shown in FIG. 3, the shaft case 20 has a movement axis O2 (moving direction) from the lip 2a when the hinged door 2 moves from the open position (see FIG. 8A) to the closed position (see FIG. 8C). ) And a cylindrical (shaft) shaft 22 (moving body) made of steel (for example, rolled steel) that retreats along the movement axis O2 to the lip 2a when moving from the closed position to the open position. ). On the other hand, the magnet case 10 has a concave portion 10a having a rectangular shape (for example, a pseudo square shape; see FIG. 5) for inserting and holding the distal end portion 22a of the protruding shaft 22. Moreover, since the magnet case 10 contains the disk-shaped neodymium magnet 12 (permanent magnet), the front-end | tip part 22a of the shaft 22 receives a magnetic induction effect | action from the magnetic field of the neodymium magnet 12, and is magnetized. It becomes an attracted portion that can be attracted to the magnet 12. In the open position of the hinged door 2, the shaft 22 and the neodymium magnet 12 do not protrude greatly from the wooden mouth 2a of the hinged door 2 and the vertical frame 5a of the fixed frame 5, respectively, so that the safety is high and the appearance is good. The movement axis O2 (width direction Y) is orthogonal to the rotation axis O1 (height direction Z) (see FIG. 1A).

  This will be described more specifically with reference to FIGS. 4 is a cross-sectional plan view and a side view showing the magnet case attached to the fixed frame, FIG. 5 is an exploded perspective view of the magnet case, and FIG. 6 is a half plan cross-sectional view showing the shaft case attached to the hinged door. FIG. 7 is an exploded perspective view of the shaft case.

  As shown in FIGS. 4 and 5, the magnet case 10 has a concave portion 10a formed at the center of the mounting portion 10b for mounting to the vertical frame 5a, and a cylindrical storage integrally formed with the mounting portion 10b. The neodymium magnet 12 is accommodated in the part 10c. A back cover 13 made of the same material as that of the magnet case 10 engages the engagement claw 13a with an engagement hole 10e formed in the storage portion 10c, whereby the magnet case 10 is embedded in the rear side (embedded in the vertical frame 5a). From the side).

  On the other hand, a front plate 11 (holding body) made of metal (for example, stainless steel) is disposed on the front side of the magnet case 10 (mounting portion 10b). The front plate 11 is formed with a through hole 11c having a shape corresponding to the concave portion 10a of the magnet case 10 at the center thereof. In addition, a long hole 11d (guide portion adjusting mechanism) having a long axis in the thickness direction X of the hinged door 2 in the closed position is formed through the periphery of the front plate 11 (for example, two places in the height direction Z). Along with the mounting hole 10d formed through the mounting portion 10b of the magnet case 10 so as to correspond to the long hole 11d, it is fastened together with the vertical frame 5a by a fastening member (not shown) such as a screw. The front plate 11 can be moved and adjusted in the thickness direction X with respect to the vertical frame 5a and the magnet case 10 by the long hole 11d.

  As shown in FIGS. 6 and 7, the shaft case 20 is moved (protruded) in the movement axis O2 direction (longitudinal direction) of the shaft 22 (tip portion 22a) at the center portion of the attachment portion 20b for attachment to the end 2a. And an insertion hole 20a that allows retraction), and the shaft 22 is housed in a cylindrical housing portion 20c that is integrally formed with the mounting portion 20b. A back cover 21 (case body) made of the same material as that of the shaft case 20 engages the engagement claw 21a with an engagement hole 20e formed in the storage portion 20c, whereby the rear side (the end 2a of the shaft case 20). From the embedding side). In addition, mounting holes 20d are formed through the periphery of the mounting portion 20b (for example, two locations in the height direction Z), and the shaft case 20 is fixed to the pier 2a by a fastening member (not shown) such as a screw. .

  Further, a compression coil for constantly urging the shaft 22 (front end portion 22a) in a retracted state between the mounting portion 20b of the shaft case 20 and a flange portion 22b formed at the rear end portion of the shaft 22. A spring 23 (biasing means) is interposed. The shaft 22 is configured as a reduced diameter portion (for example, a spherical rounded chamfered portion) whose diameter is continuously reduced as the distal end portion 22a (adsorbed portion) moves toward the distal end.

  Returning to FIG. 4, a part of the front plate 11 is folded into the through hole 11 c of the front plate 11 in order to introduce and guide the tip 22 a (reduced diameter portion) of the shaft 22 into the recess 10 a of the magnet case 10. A contact guide 11a (guide portion) is formed. Specifically, the abutment guide 11a is curvedly formed so as to approach the shaft 22 (asymptotically approach the movement axis O2) toward the front side (lower side) in the insertion direction (movement axis line O2 direction) of the shaft 22 with respect to the recess 10a. Yes. Therefore, when the tip 22a of the shaft 22 comes into contact, the contact guide 11a guides and guides the shaft 22 to the recess 10a of the magnet case 10 while pulling the shaft 22 in the insertion direction. On the other hand, in the through hole 11c of the front plate 11, the opposed guide 11b is formed by folding a part of the front plate 11 from the opposed side of the contact guide 11a, and the insertion direction of the shaft 22 guided and guided by the contact guide 11a. Has a function of adjusting the movement axis in the direction of the moving axis O2.

  Both surfaces of the contact guide 11a are sandwiched between buffer pieces 14 (projecting side buffer materials) made of a polymer material (for example, synthetic resin such as silicone resin). The buffer piece 14 buffers (reduces) sound and vibration generated when the contact guide 11a and the tip 22a of the shaft 22 contact each other. The buffer piece 14 extends from the contact guide 11a to cover the surface (bottom surface) of the concave portion 10a of the magnet case 10 and reaches the vicinity of the bent tip of the opposing guide 11b. Thereby, the sound and vibration generated when the tip 22a of the shaft 22 abuts against the surface of the recess 10a of the magnet case 10 are also buffered (reduced). Note that the tip of the buffer piece 14 may be further extended to cover the opposing guide 11b.

  Returning to FIG. 7, a buffer plate 24 (retraction side buffer material) made of a polymer material (for example, an elastomer such as foaming urethane rubber) is attached to the rear end surface of the flange portion 22 b of the shaft 22. When the hinged door 2 is moved from the closed position (see FIG. 8C) to the open position (see FIG. 8A) by the buffer plate 24, the shaft 22 is retracted by the biasing force of the compression coil spring 23. The sound and vibration generated when the rear end surface of the flange portion 22b and the inner surface of the back cover 21 come into contact with each other are buffered (reduced).

  4A and 4B, the neodymium magnet 12 has an axial cross-sectional area (diameter) larger than the maximum axial orthogonal cross-sectional area (maximum diameter) of the shaft 22. As a result, the neodymium magnet 12 can also be used when the warpage of the hinged door 2 in the thickness direction X tends to expand, or when the hinged door 2 is adjusted in position in the thickness direction X (adjustment of the front and rear gap S1; see FIG. 3). However, the front-end | tip part 22a (to-be-adsorbed part) of the shaft 22 can be adsorb | sucked stably, and the curvature of the hinged door 2 can be corrected. Further, when the position adjustment amount (the front-rear gap S1 adjustment amount) in the thickness direction X of the hinged door 2 is large, if the front plate 11 is moved and adjusted in the thickness direction X by the long hole 11d, the distal end portion of the shaft 22 The contact start position (leading start position) between 22a and the contact guide 11a can be adjusted.

Next, the operation state of the warp correction structure 6 as described above will be described with reference to FIG.
(1) When the hinged door 2 moves from the open position (FIG. 8 (a)) to the closed position (FIG. 8 (c));
The tip portion 22 a of the shaft 22 increases the degree of magnetic induction by the neodymium magnet 12 as it approaches the neodymium magnet 12, so that the attracting force to the neodymium magnet 12 exceeds the urging force of the compression coil spring 23, and the neodymium magnet 12. To protrude from the insertion hole 20a of the shaft case 20. At that time, when the leading start position shown in FIG. 8B is reached, the tip 22a of the shaft 22 comes into contact with the contact guide 11a (actually the buffer piece 14). The shaft 22 is drawn and guided to the concave portion 10a of the magnet case 10 while being drawn in the insertion direction (moving axis O2 direction), inserted and held between the opposing guides 11b, and the warp correction structure 6 operates (the thickness of the hinged door 2). To correct warping in the direction X). The shaft 22 is pushed back by the bottom surface of the recess 10a of the magnet case 10 (extension portion of the buffer piece 14) between the leading start position (FIG. 8B) and the hinged door closing position (FIG. 8C). As a result, the compression coil spring 23 is slightly extended.

(2) When the hinged door 2 moves from the closed position (FIG. 8C) to the open position (FIG. 8A);
Since the degree of magnetic induction by the neodymium magnet 12 decreases as the tip 22 a of the shaft 22 moves away from the neodymium magnet 12, the attractive force to the neodymium magnet 12 is less than the biasing force of the compression coil spring 23, and the neodymium magnet 12. In this case, the shaft case 20 retreats from the insertion hole 20a. At this time, when reaching the end position for guiding shown in FIG. 8 (b), the tip 22a of the shaft 22 is separated from the contact guide 11a (actually, the buffer piece 14), and the operation of the warp correction structure 6 (the door 2) (Warp correction in the thickness direction X) is released. The shaft 22 slightly protrudes from the insertion hole 20a of the shaft case 20 between the hinged door closed position (FIG. 8C) and the lead-in end position (FIG. 8B), and the compression coil spring 23 slightly increases accordingly. Shrink.

  Thus, every time the hinged door 2 moves (rotates) to the closed position, the neodymium magnet 12 causes the shaft 22 to protrude and attract the tip 22a (adsorbed portion). Even when the warpage in the direction X tends to expand, the correction of the warp can be stably performed by the attractive force of the neodymium magnet 12. In addition, when the hinged door 2 is adjusted in position in the thickness direction X or width direction Y (gap adjustment) with respect to the fixed frame 5 at the time of installation or the like, the correction of the warp is stabilized by the attractive force of the neodymium magnet 12. Can be done. At that time, with respect to the change (adjustment) of the width direction Y position (left and right gap S2) of the hinged door 2, the return (retreat) amount of the shaft 22 from the leading start position to the hinged door closed position is the warpage correction structure 6. Functions as an adjustment fee. On the other hand, with respect to the change (adjustment) of the thickness direction X position (front-rear gap S1) of the hinged door 2, the guiding action in the contact guide 11a (buffer piece 14) plays a role of maintaining the warp correction function and is long. The adjustment amount of the leading start position by the hole 11d functions as an adjustment allowance for the warp correction structure 6. Moreover, since the operation / deactivation of the warp correction structure 6 can be switched simply by moving the shaft 22 by the neodymium magnet 12 according to the closing / opening operation of the hinged door 2, the warp correction function can be stably exhibited over a long period of time. be able to.

(Modification)
FIG. 9 shows a modification of the shaft. In the shaft 22 (moving body) shown in FIG. 9, an auxiliary neodymium magnet 22 ′ (auxiliary permanent magnet) is embedded in the tip portion 22a (attracted portion), and the tip portion 22a is caulked. The auxiliary neodymium magnet 22 ′ and the neodymium magnet 12 (see FIG. 3) have different polarities at opposing portions that face each other at the closed position of the hinged door 2 (for example, the neodymium magnet 12 is supplemented by a positive pole). Since the neodymium magnet 22 'is a negative pole), the attractive force increases based on the magnetic action between the two magnets 12, 22'.

  In this case, the shaft 22 includes the neodymium magnet 12 and the auxiliary neodymium magnet 22 in addition to the attractive force between the neodymium magnet 12 based on the magnetic induction effect of the neodymium magnet 12 and the tip 22a (adsorbed portion) of the shaft 22. The attraction force based on the magnetic action between “and” acts, and the shaft 22 (tip portion 22a) protrudes and moves smoothly and stably.

(Example 2)
FIG. 10 is a plan cross-sectional view showing another example of the attached state of the warp correction structure at the closed position of the hinged door. In the warp correction structure 106 shown in FIG. 10, the shaft 22 (moving body) is attached to the vertical frame 5 a of the fixed frame 5 (door attachment portion), and the magnet case 10 (holding body) is attached to the mouth 2 a of the hinged door 2 (door body). It is fixed. Also in the warp correction structure 106 in FIG. 10, the tip portion 22 a of the shaft 22 is magnetized by receiving a magnetic induction effect from the magnetic field of the neodymium magnet 12 (permanent magnet), thereby attracting the attracted portion that can be attracted to the neodymium magnet 12. There will be no change. In addition, the contact guide 11a may be curved so as to be closer to the shaft 22 (asymptotically closer to the movement axis O2) toward the front side (lower side) in the insertion direction (movement axis O2 direction) of the shaft 22 with respect to the recess 10a. This is the same as Example 1 (see FIG. 4A). However, the buffer plate 24 (retraction side buffer material) is affixed to the inner surface of the back cover 21 (case body).

  In the modification (FIG. 9) and the second embodiment (FIG. 10), parts having the same functions as those in the first embodiment (FIGS. 3 to 8) are denoted by the same reference numerals, and the description thereof is omitted.

  In the above embodiment, only the case where the rotation axis O1 of the hinged door 2 (hinges 3 and 4) is positioned in the vertical direction (vertical direction) has been described. However, in the present invention, the rotation axis O1 is in another direction (for example, horizontal direction). It is also applied to the warp correction structure and door unit arranged in). Further, the position adjustment (gap adjustment) of the hinged door 2 in the three directions may be performed from the outside of the opening (room entrance) with the hinged door 2 closing the fixed frame 5. Furthermore, in the hinged door 2, the left-right positional relationship between the door knob 2c, the hinges 3, 4 and the warp correction structures 6, 106 may be reversed. Instead of the compression coil spring 23 that constantly biases the shaft 22 in the retracted state, a mechanism that moves the fluid in accordance with the protruding / retracting movement of the shaft 22 and maintains each state (for example, a gas spring or the like). Fluid spring) may be used.

The front view and side view which show the state which attached the curvature correction structure which concerns on this invention to the hinged door and the fixed frame. The perspective view which shows the attachment state of the curvature correction structure of FIG. 1 in the open position of a hinged door. The plane sectional view showing an example of the attachment state of the curvature correction structure in the closed position of a hinged door. The plane sectional view and side view which show the attachment state of the magnet case to a fixed frame. The disassembled perspective view of the magnet case of FIG. The plane half sectional view and side view which show the attachment state of the shaft case to a hinged door. The disassembled perspective view of the shaft case of FIG. Operation | movement explanatory drawing of a curvature correction structure. The fragmentary sectional view which shows the modification of a shaft. The plane sectional view showing other examples of the attachment state of a curvature correction structure in the closed position of a hinged door.

Explanation of symbols

1 door unit 2 hinged door (door)
3 Lower hinge (hinge)
4 Upper hinge (hinge)
5 Fixed frame (door mounting part)
6 Warp correction structure 10 Magnet case (holding body)
10a Recess 11 Front plate (holding body)
11a Contact guide (guide section)
11b Opposing guide 11d Long hole (Guide part adjusting mechanism)
12 Neodymium magnet (permanent magnet)
13 Back cover 13a Engaging claw 14 Buffer piece (protruding side cushioning material)
20 Shaft case (case body)
20a Insertion hole 21 Back cover (case body)
21a engaging claw 22 shaft (moving body)
22a Tip (adsorbed part; reduced diameter part)
22b Flange 22 'Auxiliary neodymium magnet (auxiliary permanent magnet)
23 Compression coil spring (biasing means)
24 Buffer plate (Retraction side buffer material)
O1 rotation axis O2 movement axis (insertion direction)

Claims (9)

A door body such as a hinged door that can be opened and closed around a rotation axis between a closed position that closes the opening and an open position that opens the door mounting portion such as a fixed frame that forms a rectangular opening. A straightening structure for correcting warping in the thickness direction,
A movement that is attached to either one of the door mounting portion and the door body and moves linearly by protruding when the door body moves to the closed position and retreating when the door body moves to the open position. Body,
A holding body fixed to the other side of the door mounting portion and the door body and having a recess for inserting and holding the projecting moving body,
One of the moving body and the holding body includes a permanent magnet magnetized to a predetermined polarity, and the other of the moving body and the holding body has a magnetic induction action from the magnetic field of the permanent magnet. Including an attracted part that can be attracted to the permanent magnet by receiving and magnetizing,
When the door body moves from the open position to the closed position, the attracted portion is attracted to the permanent magnet by increasing the degree of magnetic induction by the permanent magnet as it approaches the permanent magnet.
When the door body moves from the closed position to the open position, the attracted portion is separated from the permanent magnet by decreasing the degree of magnetic induction by the permanent magnet as it is separated from the permanent magnet. The characteristic warp correction structure of the door body. A door body such as a hinged door that can be opened and closed around a rotation axis between a closed position that closes the opening and an open position that opens the door mounting portion such as a fixed frame that forms a rectangular opening. A straightening structure for correcting warping in the thickness direction,
It is attached to the door body on one side of the door mounting portion and the door body, and protrudes when the door body moves to the closed position, and moves linearly by retreating when the door body moves to the open position. A moving object,
A holding body that is fixed to the door mounting part on the other side of the door mounting part and the door body and has a recess for inserting and holding the projecting moving body,
One of the moving body and the holding body includes a permanent magnet magnetized to a predetermined polarity, and the other moving body of the moving body and the holding body is separated from the magnetic field of the permanent magnet. Including an attracted part that can be attracted to the permanent magnet by being magnetized by receiving a magnetic induction effect;
When the door body moves from the open position to the closed position, the attracted portion is attracted to the permanent magnet by increasing the degree of magnetic induction by the permanent magnet as it approaches the permanent magnet.
When the door body moves from the closed position to the open position, the attracted portion is separated from the permanent magnet by decreasing the degree of magnetic induction by the permanent magnet as it is separated from the permanent magnet. The characteristic warp correction structure of the door body. The moving body is provided with an urging means for urging the moving body to a constantly retracted state,
When the door body moves from the open position to the closed position, the attracted force of the attracted portion increases as the degree of magnetic induction by the permanent magnet increases as it approaches the permanent magnet. While exceeding the urging force of the urging means and adsorbing to the permanent magnet,
When the door body moves from the closed position to the open position, the attracting force on the permanent magnet is reduced by decreasing the degree of magnetic induction by the permanent magnet as it is separated from the permanent magnet. The warp correction structure for a door body according to claim 1 or 2, wherein the structure is less than the biasing force of the biasing means and separates from the permanent magnet.   The attracted part is an auxiliary for increasing the attracting force based on the magnetic action between the permanent magnet and the permanent magnet by changing the polarities of the permanent magnets at opposite positions that face each other at the closed position. The warp correction structure for a door body according to any one of claims 1 to 3, comprising a permanent magnet. The moving body is formed of a shaft-shaped member having a moving direction as a longitudinal direction, and is configured as a reduced diameter portion that continuously decreases in diameter as the distal end portion on the side facing the holding body moves toward the distal end.
In the recessed portion of the holding body, a guide portion that is closer to the moving body is arranged closer to the front side in the insertion direction of the moving body with respect to the recessed portion in the closed state of the door body ,
The reduced diameter portion of the movable body is abutted and guided by the guide portion and inserted and held in the concave portion of the holding body when the door body moves from the open position to the closed position. 2. A warp correction structure for a door according to claim 1.   The guide portion and / or the reduced-diameter portion of the movable body are generated by the contact between the reduced-diameter portion of the movable body and the guide portion when the door body moves from the open position to the closed position, and The warp correction structure for a door body according to claim 5, wherein the structure is covered with a protruding-side cushioning material that cushions vibration. The moving body is housed in the case body in a form in which the reduced diameter portion protrudes toward the opening side of the door mounting portion,
When the door moves from the closed position to the open position between the end surface opposite to the diameter-reduced portion of the moving body and the inner surface of the case body facing the end surface, the end surface of the moving body The warp correction structure for a door body according to claim 5 or 6, wherein a retracting-side cushioning material that cushions sound and vibration generated by contact with the inner surface of the case body is disposed. The warp correction structure according to any one of claims 1 to 7,
Between the door mounting portion and the door body, the door mounting portion and the door body relatively rotate around the rotation axis, and at least the thickness of the door body in a plane orthogonal to the rotation axis. A hinge unit having a position adjustment mechanism capable of moving and adjusting in a direction,
When the door body is viewed from the front in the closed position, the warp correction structure and the hinge are inserted into the concave portion of the holding body on the opposite side parallel to the mounting side of the door opening / closing knob. The door unit is arranged so that a direction intersects a rotation axis of the hinge. The warp correction structure according to any one of claims 5 to 7,
Between the door mounting portion and the door body, the door mounting portion and the door body relatively rotate around the rotation axis, and at least the thickness of the door body in a plane orthogonal to the rotation axis. A hinge having a position adjusting mechanism capable of moving and adjusting in the direction;
A guide unit adjustment mechanism capable of moving and adjusting the guide portion in the thickness direction of the door body at the closed position, and a door unit comprising:
The door unit can be moved and adjusted in the thickness direction by the hinge position adjusting mechanism, and the guide unit can be moved and adjusted in the thickness direction of the door body by the guide portion adjusting mechanism.

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