JP2006177155A - Folding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding door, simple in structure, and effectively preventing the folding door body from being folded backward without special operation. <P>SOLUTION: In this folding door 1A, a latch mechanism 44 is incorporated in a folding connecting part 35 of the folding door body 3 fitted to a frame body 2 to be freely opened and closed, and the lower frame 7 of the frame body 2 is disposed substantially without a difference in level to the floor surface on the interior A side and the floor surface on the interior B side. The latch mechanism 44 is provided with latch projection 69 urged downward by a presser spring 63 to engage with and disengage from a rail 16 formed on the lower frame 7 of the frame body 2 from the interior A side, and an abutting projection 70 formed integral with the latch projection 69 with a gap for the thickness of the rail 16 and abutting on the rail 16 from the interior A side to inhibit the folding door body 3 from being folded backward. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a folding door that is disposed without any step on the floor surface on the indoor side and the floor surface on the outdoor side in consideration of barrier-free.

Conventionally, as this type of folding door, for example, the one described in JP-A-10-238196 applied to a folding door in a bathroom is known. In this folding door in consideration of barrier-free, the upper frame is arranged with a step with respect to the ceiling surface on the bathroom side and the ceiling surface on the dressing room side, but on the floor surface on the bathroom side and on the dressing room side. The lower frame is disposed substantially without a step with respect to the floor surface.
JP-A-10-238196

In such a conventional folding door, since there is no step around the lower frame, there is no door stop portion with which the folding door main body comes into contact with the lower frame. For this reason, when the force is applied to the dressing room side, that is, in the reverse folding direction, from the state where the folding door body is closed and the latch is locked to the rail, the upper part of the folding door body is reversely folded by receiving the upper frame. However, the lower part is bent as it is, and the hinge mechanism of the connecting part may be damaged. Similarly, when a plurality of folding doors are stacked or transported or stored, the lower folding door may be folded backward due to the load of the folding door, and the hinge mechanism may be damaged.
However, in many folding doors, a lock mechanism that locks the folding door body from the indoor side (bathroom side) is incorporated, and if this locking mechanism is used as a locking operation, the above-described reverse folding can be prevented. However, forcing a user or an operator to perform a locking operation to prevent reverse folding is not practical due to the problem of forgetting the operation.

  An object of the present invention is to provide a folding door having a simple structure and capable of effectively preventing reverse folding of the folding door body without requiring a special operation.

  The folding door of the present invention incorporates a latch mechanism in the folding connection portion of the folding door body attached to the frame body so as to be openable and closable, and arranges the lower frame of the frame body on the indoor floor surface and the outdoor floor surface with almost no step. In the folding door provided, the latch mechanism has a latch projection that is urged downward by a presser spring and formed on the lower frame of the frame body, and a gap corresponding to the thickness of the latch projection and the rail. And an abutment protrusion that abuts against the rail from the indoor side to prevent reverse folding of the folding door body.

According to this structure, since the latch mechanism of the folding door body that engages and disengages with the rail of the lower frame is provided with the contact projection so as to face the latch projection, the folding mechanism of the folding door body can be folded backward using the latch mechanism. The blocking mechanism can be constructed very simply and at low cost.
In addition, the contact protrusion as well as the latch protrusion is biased downward by the presser spring, so that when the reverse folding force exceeding the expectation is applied to the folding door body, the presser spring functions to absorb this reverse folding force. To do. For this reason, damage to the folding door body can be effectively prevented against a large reverse folding force.

  Another folding door of the present invention includes a frame, a folding door main body attached to the frame so as to be freely opened and closed, and a reverse folding prevention mechanism that is incorporated in a folding connecting portion of the folding door main body and prevents the folding folding of the folding door main body to the outdoor side. And the folding door main body is guided by rails formed on the frame body and is attached to the frame body. It is opened and closed via a pivotable gravity hinge, and the reverse fold prevention mechanism is installed in the lower edge of one connecting vertical shaft that constitutes the fold connecting portion, and the inside of the folding door main body is closed to the rail. A contact projection that abuts against the folding door body, a holder that slidably accommodates the contact projection so that the contact projection protrudes downwards, and a contact projection that is received by the holder downward. Having a presser spring to be biased And it features.

According to this configuration, when the folding door main body is closed, the contact protrusion of the reverse folding prevention mechanism is in contact with the rail of the frame body from the indoor side, and the folding back of the folding door main body is prevented. On the other hand, the folding door main body is guided by the rail of the frame body and slides and is opened and closed while rotating through the gravity hinge. Therefore, the folding door main body slightly moves up by the opening operation and slightly lowers by the closing operation. Move. Therefore, when the folding door main body is opened from the closed state where the contact protrusion is in contact with the rail, the contact protrusion also moves up together with the folding door main body (folding connecting portion), and the floor surface on the indoor side may be damaged. No.
In addition, since the contact protrusion is biased downward by the presser spring, the presser spring functions to absorb the reverse folding force when an unexpected reverse bending force is applied to the folding door body. For this reason, damage to the folding door body can be effectively prevented against a large reverse folding force.

  As described above, according to the folding door of the present invention, the latch mechanism can be effectively used, and the reverse folding prevention mechanism required for the folding door body can be configured very simply and at low cost.

  Moreover, according to the other folding door of this invention, a gravity hinge can be used effectively and the reverse folding prevention mechanism calculated | required by the folding door main body can be comprised very simply and at low cost.

  Hereinafter, the case where the folding door which concerns on one Embodiment of this invention is applied to the folding door for bathrooms with reference to an accompanying drawing is demonstrated. The bathroom provided with this folding door is composed of a barrier-free unit bath that has no step between it and the dressing room, and the lower frame of the folding door has a structure with almost no steps from the bathroom floor and the dressing room floor. It has become. As shown in the figure of FIG. 1, the longitudinal sectional view of FIG. 2, and the transverse sectional view of FIG. 3, the folding door 1A is a folding door main body 3 comprising a frame 2 and a door end side door body 3a and a door bottom side door body 3b. The door-end side door body 3a and the door-end side door body 3b are connected to the bathroom A side via the connecting member 4 so as to be freely folded.

  The frame 2 is configured by a framework of an upper frame 6, a lower frame 7, and both vertical frames 8, 8 made of an aluminum shape member or the like. The upper frame 6 is suspended from the upper frame body 10 formed in a substantially “L” shape, the upper guide rail 11 suspended from the upper frame body 10 on the bathroom A side, and the dressing room B side of the upper frame body 10. The upper frame seal mounting piece 12 is integrally formed. An upper seal member 13 extending toward the folding door body 3 is attached to the upper frame seal attachment piece 12.

  Similarly, the lower frame 7 includes a lower frame body 15 having a hollow portion, a lower guide rail 16 standing on the bathroom A side of the lower frame body 15, and a lower seal provided on the dressing room B side of the lower frame body 15. The mounting portion 17 is integrally formed. A first lower seal member 18 on the bathroom A side and a second lower seal member 19 on the dressing room B side that extend toward the folding door body 3 are attached to the lower seal attachment portion 17. In this case, the lower frame 7 is disposed so as to be placed on the stepped edge Pa formed on the waterproof pan P of the bathroom A by the lower frame main body 15.

  Each of the left and right vertical frames 8 includes a vertical frame body 21 that is bent into a frame shape on the bathroom A side and formed in a substantially “L” shape as a whole, and a vertical frame seal provided on the bathroom A side of the vertical frame body 21. The mounting portion 22 and the vertical frame seal mounting piece 23 projecting on the dressing room B side of the vertical frame body 21 are integrally formed. A vertical seal member 24 extending toward the bathroom side portion of the folding door body 3 is attached to the vertical frame seal attachment portion 22, and a seal attachment 25 in which the seal pieces are fixed to both outer ends of the vertical frame seal attachment piece 23. Is locked. The upper seal member 13, the first and second lower seal members 18, 19, the vertical seal member 24, and the seal attachment 25 seal the space between the folding door body 3 and the frame body 2 over four circumferences. .

  The door-end side door body 3a and the door-end side door body 3b are constructed by assembling a vertical rod 34 and a connecting vertical rod 35 on an upper rod 31, a lower rod 32 and an intermediate rail 33, both of which are made of aluminum. In addition, the upper and lower panel bodies 36, 36 made of resin are fitted therein. The lower side 32 of each door body 3a, 3b has a bathroom side seal piece 38 on the bathroom A side at the lower end thereof, and the connecting portion (folded connection portion) of the left and right door bodies 3a, 3b has a bathroom side. Two partial seal pieces 39 are attached so that the seal pieces 38 and the outer end portions overlap each other (details will be described later).

  The middle rail 33 is integrally formed with a handle portion 41 on the dressing room B side, and a towel rack 42 also serving as a handle is attached on the bathroom A side. A ventilation louver 43 with an opening / closing mechanism that communicates between the interior and the exterior is formed on the lower collar 32 of each door body 3a, 3b. Further, a latch mechanism 47 is provided at the upper end portion of the connecting vertical rod 35 of the door-end side door body 3a, and the connecting vertical rods 35, 35 of the door-end side and door-end side door bodies 3a, 3b are both connected vertically. A reverse folding prevention mechanism 44 that also serves as a latch mechanism is incorporated between the lower ends of the flanges 35 and 35 (see FIG. 1). Further, a closing lock mechanism 45 is incorporated in the upper end portion of the connecting vertical shaft 35 of the door-side door body 3b, and the vertical walls (door-end vertical wall and door-side vertical wall) 34 of each door body 3a, 3b, A separation mechanism 46 for separating an upper slider 49a, which will be described later, from the upper guide rail 11 is incorporated in the upper end portion of 34, respectively.

  An upper slider 49a and a lower slider 49b are respectively attached to the vertical rods 34 of the door bodies 3a and 3b on the door end side and the door bottom side via upper and lower pin hinges (gravity hinges) 48 and 48, respectively. , 3b are slidably supported by the upper guide rail 11 and the lower guide rail 16 by the upper slider 49a and the lower slider 49b, respectively. However, the upper and lower sliders 49a and 49b of the door-side door 3b are fixed to the upper and lower guide rails 11 and 16, respectively. In addition, since the pin hinge is composed of a gravity hinge, the door bodies 3a and 3b slightly move up with the opening operation and slightly move down with the closing operation.

  Next, with reference to FIG. 4, the reverse fold prevention mechanism 44 incorporated between the connecting vertical rods 35, 35 of the door end side and door bottom side door bodies 3a, 3b will be described. The reverse fold prevention mechanism 44 includes a reverse fold prevention member 51 incorporated in the lower end portion of the connecting vertical rod 35 of the door-end side door body 3a, and a movable cam member 52 fixed to the bathroom-side finding surface of the reverse fold prevention member 51. The fixed cam member 53 fixed to the lower end portion of the connecting vertical rod 35 of the door-side door body 3b. The movable cam member 52 and the fixed cam member 53 are arranged side by side on the side of the bathroom A of both the connecting vertical bars 35 and 35. The reverse folding preventing member 51 substantially doubles as a latch mechanism.

  The fixed cam member 53 includes an insertion fixing portion 55 that is fitted into the lower end portion of the connection vertical rod 35, and a fixed cam plate 56 that protrudes on the bathroom A side of the insertion fixing portion 55 and is exposed on the bathroom-side finding surface of the connection vertical rod 35. And a partial seal piece 39 provided vertically to the lower end of the fixed cam plate 56. The fitting fixing part 55 is fitted into the lower edge of the rectangular hollow part 35a located in the middle of the connecting vertical bar 35, and is screwed to the connecting vertical bar 35 from the bathroom A side in this state. The fixed cam plate 56 has a substantially square front shape, and a downward cam inclined surface (approximately 45 °) 57 is formed in the lower part on the movable cam member 52 side.

  The reverse fold prevention member 51 includes a fixed block 59 that is fixed to the connecting vertical rod 35, a holder 60 that is slidable in the vertical direction (movable up and down) on the fixed block 59, and a fixed block that is accommodated in the upper portion of the holder 60. 59, the upper moving spring 61 for urging the holder 60 upward in response to the receiving member 59, the latch-like member (contact member) 62 accommodated in the lower part of the holder 60, and the latch-like member 62 in response to the holder 60. The latch spring 63 is biased downward. A movable cam member 52 is fixed to the lower part of the holder 60 on the bathroom A side.

  The holder 60 is loosely fitted into the lower end of the rectangular hollow portion 35a located in the middle of the connecting vertical bar 35, and is slidably supported by the fixed block 59 inside the upper and lower intermediate portions. A part of the fixed block 59 on the side of the bathroom A protrudes from the holder 60, and this part is screwed to the connecting vertical bar 35 from the side of the bathroom A. The upper moving spring 61 is composed of a coil spring interposed between a protrusion 65 formed on the upper end of the fixed block 59 and a protrusion 66 formed on the lower surface of the top plate of the holder 60. The holder 60 on which the movable cam member 52 is mounted is urged upward.

  The latch-like member 62 is guided to the inside of the lower end portion of the holder 60 and is configured to be slightly movable up and down (slidable). The member main body 67 and the shaft portion 68 extending slightly bent upward from the member main body 67. And a latch projection 69 and a contact projection 70 projecting downward from the lower end of the member main body 67. The latch spring 63 is mounted so as to be wound around the shaft portion 68 of the latch-like member 62, and receives the intermediate portion of the holder 60 to press and urge the latch-like member 62 downward.

  The latch protrusion 69 and the contact protrusion 70 face each other in parallel with a gap corresponding to the thickness of the lower guide rail 16, the latch protrusion 69 is located on the dressing room B side, and the contact protrusion 70 is in the bathroom A. Located on the side. The latch protrusion 69 has an inclined surface on each side of the bathroom A and the dressing room B, and is formed in a reverse mountain shape (mountain shape) cross section. Hold closed. The contact protrusion 70 is formed in a convex shape in cross section, and the latch protrusion 69 is engaged with the lower guide rail 16 so as to contact the lower guide rail 16 from the bathroom A side, and the dressing room of the folding door main body 3. Prevent reverse folding to the B side.

  On the other hand, the holder 60 on which the latch-like member 62 is mounted is guided to the fixed block 59 while being biased by the upper moving spring 61, and slides in the vertical direction between the upper moving position and the lower moving position. ing. In this case, the latch protrusion 69 and the contact protrusion 70 face the lower guide rail 16 from above in the downward movement position, and the latch protrusion 69 and the contact protrusion 70 retract from the lower guide rail 16 upward in the upward movement position. That is, the latch protrusion 69 can be engaged with and disengaged from the lower guide rail 16 only in the downward movement position, and the contact protrusion 70 contacts the lower guide rail 16 so as to prevent reverse folding.

  The movable cam member 52 protrudes from the bathroom side lower portion of the reverse folding preventing member (holder 60) 51 and is exposed to the bathroom side finding surface of the connecting vertical bar 35, and vertically cuts to the lower end of the movable cam plate 72. And a partial seal piece 39 that is vertically suspended. The movable cam plate 72 has a substantially square front shape, and an upward cam slope (approximately 45 degrees) 73 is formed in the lower part on the fixed cam member 53 side. The partial seal piece 39 of the fixed cam member 53 and the partial seal piece 39 of the movable cam member 52 are disposed so as to partially overlap when the folding door main body 3 is closed. The space between the frame 7 and the lower collar 32 is sealed.

  By the way, the fixed cam member 53 and the movable cam member 52 protrude to the bathroom A side (see FIG. 2), and are separated when the folding door body 3 is folded (opened), and deployed in a straight line (closed). Contact. That is, the downward cam slope 57 of the fixed cam member 53 and the upward cam slope 73 of the movable cam member 52 are gradually separated in the opening operation of the folding door body 3 and gradually approached in the closing operation.

  More specifically, the movable cam member 52 is configured to be slidable in the vertical direction via the holder 60 and is urged upward by the upper moving spring 61. In the initial opening operation of the folding door body 3, the movable cam member 52 is separated. The movable cam member 52 moves to the upward movement position with respect to the fixed cam member 53 by the cam action of the both cam inclined surfaces 57 and 73 and the spring force of the upward movement spring 61. On the contrary, in the final closing operation of the folding door main body 3, the movable cam member 52 moves downward with respect to the fixed cam member 53 against the spring force of the upper moving spring 61 by the cam action of the cam slopes 57 and 73 approaching each other. Move to the moving position.

  That is, the latch protrusion 69 and the contact protrusion 70 are retracted from the lower guide rail 16 through the movable cam member 52 in the initial opening operation of the folding door body 3, and the latch protrusion 69 and the contact protrusion 70 are movable in the final closing operation. It faces the lower guide rail 16 via the cam member 52. Therefore, the latch projection 69 and the contact projection 70 perform a locking function and a reverse folding prevention function, respectively, when the folding door body 3 is closed or close to this.

  In such a configuration, when the folding door body 3 is completely closed, the latch projection 69 and the contact projection 70 are in the downward movement position, and the latch projection 69 is locked to the lower guide rail 16 to close the folding door body 3. Holding in the posture, the contact protrusion 70 contacts the lower guide rail 16 to prevent the folding door body 3 from being folded backward toward the dressing room B. For this reason, even if a strong force is applied to the lower part of the folding door body 3 from the bathroom A side, the folding door body 3 is not bent to the dressing room B side, and damage to the connecting member 4 and the like can be prevented. This can also prevent damage to the folding door body 3 based on reverse folding even when the folding doors 1A are transported or stored in a stacked state.

  On the other hand, when opening of the folding door body 3 is started, the latch protrusion 69 and the contact protrusion 70 move to the upward movement position. For this reason, the latch protrusion 69 and the contact protrusion 70 are not rubbed against the floor surface (waterproof pan P) of the bathroom A configured without a step, and the floor surface can be effectively prevented from being damaged. Note that the reverse folding prevention mechanism 44 of the embodiment that also serves as the latch mechanism can be considered as a contact protrusion 70 formed on the latch body of the latch mechanism.

  By the way, since the gravity hinge is used in the present embodiment as described above, the door bodies 3a and 3b move up with the opening operation and move down with the closing operation. Therefore, apart from the latch mechanism, the reverse fold prevention mechanism 44 may be constituted by the reverse fold prevention member 51 (only the cam members 52 and 53) having only the above-described contact protrusion 70. That is, the contact protrusion 70 is moved up and down together with the door bodies 3a and 3b to enable contact with the lower guide rail 16 (preventing reverse folding) and prevention of damage to the floor surface (waterproof pan P).

  Next, a second embodiment will be described with reference to FIGS. 5 and 6. In the following description, only parts different from the first embodiment will be described. The folding door of this embodiment is a hanging folding door 1 </ b> B of the top hanging type, and the folding door main body 3 is opened and closed in a state of being hung on the upper frame 6 of the frame 2. In this case, a latch locking piece 81 is formed on the upper frame 6 in place of the upper guide rail 11, and a suspension car guide 82 having a “C” cross section is integrally formed on the bathroom A side. Further, the lower frame 7 is formed with a lower guide rail 83 whose upper part is bent substantially perpendicularly to the dressing room B side.

  A suspension member 84 is provided in place of the upper slider 49a incorporated in the vertical rod 34 of each door body 3a, 3b. A suspension wheel 85 is rotatably attached, and a hinge pin 86 is attached to the lower part. Similarly, the lower slider 87 incorporated in the vertical rod 34 of each door body 3a, 3b is slidably locked to the lower guide rail 83 from the dressing room B side at the lower end thereof. And in this hanging folding door 1B, the latch mechanism 88 is incorporated in the upper end part of the connection vertical rod 35 of the door-end side door body 3a, and is engaged with and disengaged from the latch locking piece 81 described above.

  FIG. 7 shows a reverse folding preventing mechanism 44 incorporated in the hanging folding door 1B. As described above, in the second embodiment, the latch mechanism 88 is incorporated only in the upper end portion of the connection vertical bar 35, and the reverse folding prevention mechanism 44 of the second embodiment is the reverse folding prevention mechanism 44 of the first embodiment. It does not double as a latch mechanism. More specifically, in the reverse folding preventing mechanism 44 of the second embodiment, the latch protrusion 69 is not formed on the latch-like member 62. However, other parts have substantially the same structure as the reverse folding prevention mechanism of the first embodiment. Therefore, the description of the reverse folding prevention mechanism is left to the first embodiment.

  As described above, according to the second embodiment, as in the first embodiment, when the folding door body 3 is completely closed, the contact protrusion 70 is in the downward movement position, and the contact protrusion 70 is the lower guide. Abutting on the rail 83 prevents the folding door body 3 from being folded back toward the dressing room B. For this reason, even if a strong force is applied to the lower part of the folding door body 3 from the bathroom A side, the folding door body 3 is not bent to the dressing room B side, and damage to the connecting member 4 and the like can be prevented. This also prevents damage to the folding door main body 3 based on reverse folding, even when the plurality of hanging folding doors 1B are transported or stored in a stacked state.

  On the other hand, when opening of the folding door body 3 is started, the contact protrusion 70 moves to the upward movement position. For this reason, the contact protrusion 70 is not rubbed against the floor surface (waterproof pan P) of the bathroom A configured without a step, and the floor surface can be effectively prevented from being damaged. Note that the latch spring 63 in the first and second embodiments has a function of absorbing an excessive force applied to the contact protrusion 70 from the bathroom A side. Therefore, even in the reverse folding prevention mechanism 44 of the second embodiment without the latch protrusion 69, the latch spring 63 functions effectively.

  In addition, although this embodiment demonstrated the folding door for bathrooms, it cannot be overemphasized that it can apply also to the folding door of barrier free designs (there is no level difference), such as a folding door of a shower room. Further, in the present embodiment, the reverse folding prevention member moves up and down with respect to the folding door main body, but the reverse folding prevention member may move up and down together with the folding door main body (see, for example, the above-mentioned JP-A-10-238196). ).

It is the figure seen from the bathroom side of the folding door which incorporated the reverse folding prevention mechanism in one Embodiment of this invention. It is an expansion longitudinal cross-sectional view of the folding door which concerns on 1st Embodiment. It is an expansion cross-sectional view of the folding door which concerns on 1st Embodiment. It is a structural diagram of the reverse folding prevention mechanism according to the first embodiment. It is an expansion longitudinal cross-sectional view of the hanging folding door which concerns on 2nd Embodiment. It is an expansion cross-sectional view of the folding door which concerns on 2nd Embodiment. It is a structural diagram of the reverse fold prevention mechanism according to the second embodiment.

Explanation of symbols

1A folding door, 1B hanging folding door, 2 frame body, 3 door body, 3a door end side door body, 3b door bottom side door body, 4 connecting member, 7 lower frame, 16 lower guide rail, 32 lower arm, 34 vertical arm, 35 connecting vertical rod, 39 partial seal piece, 44 reverse folding prevention mechanism, 51 reverse folding prevention member, 52 movable cam member, 53 fixed cam member, 57 downward cam slope, 60 holder, 61 upper moving spring, 62 latch-like member, 63 Latch spring, 69 Latch projection, 70 Abutment projection, 73 Upward cam slope, A Bathroom, B Dressing room.

Claims (2)

In the folding door in which the latch mechanism is incorporated in the folding connecting portion of the folding door main body attached to the frame body so as to be freely opened and closed, and the lower frame of the frame body is arranged substantially without any step with respect to the floor surface on the indoor side and the floor surface on the outdoor side,
The latch mechanism is a latch protrusion that is urged downward by a presser spring to engage and disengage from the indoor side to a rail formed on the lower frame of the frame body,
The latch protrusion and the rail are formed integrally with a gap corresponding to the thickness of the rail, and have a contact protrusion that contacts the rail from the indoor side to prevent reverse folding of the folding door body. Orito. A frame body, a folding door main body attached to the frame body so as to be openable and closable, and a reverse folding prevention mechanism that is incorporated in a folding connection portion of the folding door main body and prevents reverse folding of the folding door main body to the outdoor side. In the folding door in which the lower frame of the frame body is arranged almost without any step with respect to the floor surface on the indoor side and the floor surface on the outdoor side,
The folding door body is opened and closed via a gravity hinge that is guided by a rail formed on the frame and is rotatable with respect to the frame.
The reverse folding prevention mechanism is attached to a lower fork portion of one of the connecting vertical shafts constituting the folding coupling portion, and comes into contact with the rail from the indoor side in a state where the folding door body is closed, and the folding door body is folded backward. A contact projection that prevents the contact projection, a holder that slidably accommodates the contact projection so that the contact projection protrudes downward, and a presser that is accommodated in the holder and biases the contact projection downward And a folding door characterized by having a spring.

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