Upper and lower split door

Abstract

To enable opening and closing of an upper door and a lower door integrally, opening and closing of only the upper door, and opening and closing of only the lower door by a simple operation. [Solution] The upper and lower divided door 1 has an upper door 20 and a lower door 30. The upper connecting member 22 of the upper door 20 and the lower connecting member 32 of the lower door 30 are provided with rotation transmission members 401, 402 that transmit the rotation of either the upper lever handle or the lower lever handle to the other. When the upper connecting member 22 and the lower connecting member 32 are joined, the rotation of the upper lever handle or the lower lever handle can be transmitted via the rotation transmission member, and the upper door 20 and the lower door 30 can be opened and closed as a unit by rotating either the upper lever handle or the lower lever handle.

Description

[Technical Field]

[0001] The present disclosure relates to an upper and lower divided door having an upper door and a lower door. [Background technology]

[0002] Indoor swing doors are typically constructed from a single piece of door material or panel. When closed, they completely block the opening, separating living rooms, and when opened, they completely open, allowing access. However, when a swing door is installed between a living room and a hallway in a home, for example, to prevent pets or small children from passing through when the swing door is open requires the installation of a separate pet playpen or baby door. Furthermore, to block views from the hallway through the entrance, the swing door must be closed to completely block the opening, which creates inconveniences such as preventing the circulation of indoor air during periods when air conditioning is not used, such as spring and autumn.

[0003] On the other hand, a hinged door with a door material divided into upper and lower parts has also been proposed. For example, Patent Document 1 discloses a door in which the upper door part and the lower door part are configured to be disconnectable, and when the connection is disconnected, the lower door part is kept closed to prevent the passage of an infant, while the infant can be seen through the open upper door part. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-314952 Summary of the Invention [Problem to be solved by the invention]

[0005] In the configuration of Patent Document 1, when the lower door section is kept closed and the upper door section is opened, the connecting means including the lock pins provided in multiple locations and the child locking means must be operated individually, which makes these multiple operations complicated and time-consuming.In addition, the lower door section cannot be opened or closed unless it is connected to the upper door section, and therefore cannot be used in a manner in which the upper door section is closed and the lower door section is open.

[0006] The present disclosure aims to provide an upper and lower divided door that allows the upper and lower doors to be opened and closed together, as well as the upper door alone or the lower door alone, and that simplifies operation. [Means for solving the problem]

[0007] The solution of the present disclosure to achieve the above-mentioned object is an upper and lower divided door having an upper door and a lower door arranged below the upper door, wherein the upper door is provided with an upper lever handle that can be rotated and an upper connecting member that connects the upper door and the lower door together, and the lower door is provided with a lower lever handle that can be rotated and a lower connecting member that is connected to the upper connecting member and connects the lower door and the upper door together, and the upper connecting member and the lower connecting member are provided with rotation transmission members that transmit the rotation of one of the upper lever handle or the lower lever handle to the other, and when the upper connecting member and the lower connecting member are connected, the rotation of the upper lever handle or the lower lever handle can be transmitted via the rotation transmission member, and the upper door and the lower door can be opened and closed as a unit by rotating either the upper lever handle or the lower lever handle.

[0008] Furthermore, in the upper and lower divided door, the lower connecting member is arranged to be movable at least in the vertical direction, and moves upward to connect to the upper connecting member and moves downward to disconnect, and the rotation transmission member includes an upper transmission member provided on the upper connecting member and a lower transmission member provided on the lower connecting member, and by connecting the upper connecting member and the lower connecting member, the upper transmission member and the lower transmission member are arranged to be able to transmit rotation.

[0009] Furthermore, in the upper and lower divided door, it is preferable that the upper transmission member has a first gear that rotates in conjunction with the rotation of the upper lever handle and a connecting gear that meshes with the first gear, the lower transmission member has a second gear that rotates in conjunction with the rotation of the lower lever handle, the second gear is arranged to be able to mesh with the connecting gear, the second gear and the connecting gear mesh with each other due to movement of the lower connecting member, and the upper transmission member and the lower transmission member are able to transmit rotation.

[0010] Furthermore, in the above-mentioned upper and lower divided door, the lower connecting member further includes a driven pulley provided on the rotation axis of the second gear, a driving pulley provided on the rotation axis of the lower lever handle, and a toothed belt wound around the driven pulley and the driving pulley, and the toothed belt is arranged so that tension is applied to the toothed belt when the lower connecting member moves upward and becomes taut when the lower connecting member moves downward, and when the toothed belt is taut, the second gear and the connecting gear are preferably arranged to mesh with each other.

[0011] Furthermore, in the upper and lower divided door, the first gear, the second gear, and the connecting gear may each be a tapered gear that rotates around a rotation axis, and the connecting gear and the second gear may be arranged so that the tooth trace directions of the teeth of the teeth are inclined in the same direction relative to the rotation axis in the meshing region, the lower connecting member may be arranged to be movable in the vertical direction and in the axial direction of the rotation axis, and may be connected to the upper connecting member by moving upward and axially, and the second gear may be arranged to mesh with the connecting gear by the axial movement.

[0012] Furthermore, in the upper and lower divided door, it is preferable that the lower connecting member has a pin that protrudes upward from the lower door by upward movement and is connected to the upper connecting member, the upper connecting member has a pin hole that opens downward and into which the pin is inserted, and the pin and the pin hole are provided with a locking means that maintains the connected state with each other.

[0013] In addition, in the upper and lower divided doors, it is preferable that the lower door is provided with an operating unit for moving and operating the lower connecting member, and that the operating unit has a display unit that displays the connected or unconnected state of the upper door and the lower door. [Effects of the Invention]

[0014] According to the present disclosure, in addition to being able to open and close the upper and lower doors together, it is also possible to open and close only the upper door or only the lower door, and this operation can be simplified. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing an upper and lower divided door according to a first embodiment of the present disclosure. [Figure 2] 10 is a front view showing an upper connecting member and a lower connecting member provided inside the upper and lower divided doors. FIG. [Figure 3] 3 is a side view showing an upper connecting member and a lower connecting member provided inside the upper and lower divided doors, as viewed from the left side in FIG. 2. FIG. [Figure 4]FIG. 10 is a perspective view showing a lower connecting member inside the lower door. [Figure 5] FIG. 10 is a front view showing the joined state of the upper connecting member and the lower connecting member. [Figure 6] 6 is a side view showing the coupled state of the upper and lower connecting members as viewed from the left side in FIG. 5. FIG. [Figure 7] FIG. 10 is a front view showing an upper connecting member and a lower connecting member provided inside the upper and lower divided door according to the second embodiment of the present disclosure. [Figure 8] 8 is a side view showing the upper connecting member and the lower connecting member provided inside the upper and lower divided doors, as viewed from the left side in FIG. 7. FIG. [Figure 9] FIG. 10 is a perspective view showing a lower connecting member inside the lower door. [Figure 10] FIG. 10 is a front view showing the joined state of the upper connecting member and the lower connecting member. [Figure 11] 11 is a side view showing the coupled state of the upper and lower connecting members as viewed from the left side in FIG. 10. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] The upper and lower divided doors according to the embodiments of the present disclosure will be described with reference to the drawings. In the following description, components common to both the first and second embodiments will be designated by common reference numerals, and duplicated descriptions will be omitted.

[0017] (Embodiment 1) 1 to 6 show a vertically divided door 1 according to a first embodiment of the present disclosure. FIG. 1 is a front view showing an example of the vertically divided door 1. FIGS. 2 and 3 show an upper connecting member 22 and a lower connecting member 32 provided inside the vertically divided door 1, with FIG. 2 being a front view and FIG. 3 being a side view as seen from the left side of FIG. 2. FIG. 4 is a perspective view showing the lower connecting member 32. FIGS. 5 and 6 show the joined state of the upper connecting member 22 and the lower connecting member 32, with FIG. 5 being a front view and FIG. 6 being a side view as seen from the left side of FIG. 5. Note that FIG. 1 shows the vertically divided door 1 as seen from inside a room or the like, with the X direction representing the width direction (horizontal), the Y direction representing the front-to-rear direction (front side Y1, back side Y2), and the Z direction representing the up-down direction.

[0018] As shown in Figure 1, the upper and lower divided door 1 comprises an upper door 20 and a lower door 30 located below the upper door 20. The upper door 20 and the lower door 30 are attached to a vertical frame 12 of an opening frame provided in an opening 11 via hinges or the like (not shown) so that they can be opened and closed. The axis of each hinge extends in the vertical direction Z, and the positions of the respective axis centers are aligned. The opening 11 is provided, for example, between a living room and a corridor leading to the living room.

[0019] The upper door 20 and the lower door 30 each include a flat door panel, a latch device (not shown) housed in the door panel, and lever handles 21, 31 connected to the latch device. The upper door 20 is provided with an upper lever handle 21 that can be rotated. The lower door 30 is provided with a lower lever handle 31 that can be rotated. Both the upper lever handle 21 and the lower lever handle 31 are provided in positions close to the door edge. The upper door 20 can be opened and closed independently of the lower door 30 by rotating the upper lever handle 21. Similarly, the lower door 30 can be opened and closed independently of the upper door 20 by rotating the lower lever handle 31.

[0020] In addition, the upper and lower divided door 1 can be opened and closed as a single unit by connecting the upper door 20 and the lower door 30. In this case, the mechanism described below makes it possible to open and close the upper door 20 and the lower door 30 as a single unit by operating either the upper lever handle 21 or the lower lever handle 31.

[0021] 2 and 3, an upper connecting member 22 that integrally connects the upper door 20 and the lower door 30 is provided inside the upper door 20, and a lower connecting member 32 that is joined to the upper connecting member 22 and integrally connects the lower door 30 and the upper door 20 is provided inside the lower door 30. The upper connecting member 22 and the lower connecting member 32 are disposed inside the door panel at positions corresponding to the respective lever handles.

[0022] The upper connecting member 22 includes a main body 23 and an upper transmission member 401 supported by the main body 23. A pin hole 24 is formed in the lower surface of the main body 23. The pin hole 24 is a substantially cylindrical hole that opens downward in the main body 23, and opens to the lower edge surface 201 of the upper door 20.

[0023] The lower connecting member 32 includes a main body 33 and a lower transmission member 402 supported by the main body 33. An upwardly protruding pin 34 is provided on the top surface of the main body 33. The pin 34 is formed in a generally cylindrical shape corresponding to the pin hole 24. The lower connecting member 32 is provided within the lower door 30 so as to be movable in the up-down direction Z. The lower connecting member 32 shown in Figures 2 and 3 is in a lower position, where it is able to move upward.

[0024] 4, the lower connecting member 32 has a main body 33 that is, for example, a substantially L-shaped block or box shape when viewed from above. Similarly, the upper connecting member 22 also has a main body 23 that is a substantially L-shaped block or box shape when viewed from above.

[0025] In the lower connecting member 32, the front surface 33a of the main body 33 is disposed facing the front side of the lower door 30 and is provided so as to be parallel to the plane on which the lower lever handle 31 rotates. The side surface 33b of the main body 33 is disposed facing the door edge side of the lower door 30 and is provided so as to be parallel to the axial direction (in this case, the front-to-rear direction Y) of the rotation shaft 311 of the lower lever handle 31. Note that the lower lever handle 31 is provided in pair with a similar lever handle on the opposite side of the rotation shaft 311, so that it can also be operated from the back side (Y2 side) of the lower door 30.

[0026] The main body 33 is provided with an operating unit 60 for operating and moving the lower connecting member 32 in the up-down direction Z. The operating unit 60 is an operating knob that is integrally provided with the lower connecting member 32 and is provided to protrude from the front surface 33a to the near side Y1.

[0027] 2, the operating unit 60 is provided so as to be movable in the vertical direction Z along a slide hole 61 formed in the front surface (front face) of the lower door 30. The slide hole 61 is, for example, an elongated hole that opens in the door panel of the lower door 30, and is formed long in the vertical direction Z with a length corresponding to the vertical movement of the lower connecting member 32.

[0028] By moving the operating unit 60 above the slide hole 61, the lower connecting member 32 integrated with the operating unit 60 can be moved upward. As the lower connecting member 32 moves upward, the pin 34 protrudes upward from the upper edge surface 301 of the lower door 30. As shown in FIGS. 5 and 6, the pin 34 of the lower connecting member 32 is inserted into the pin hole 24 of the upper connecting member 22, and the lower connecting member 32 is joined to the upper connecting member 22. As a result, the upper door 20 and the lower door 30 are connected together and enter a connected state.

[0029] For example, it is preferable that the pin 34 is formed with a magnetic material, while a magnet 241 is provided above the pin hole 24 as a locking means for the pin 34. As a result, when the pin 34 is inserted into the pin hole 24, the pins are attracted to each other by the magnetic force of the magnet 241, and the coupled state is maintained.

[0030] Furthermore, by moving the operating part 60 downward, the lower connecting member 32 moves downward. As shown in Figures 2 and 3, the pin 34 of the lower connecting member 32 is released from the pin hole 24 of the upper connecting member 22, and the connection between the upper connecting member 22 and the lower connecting member 32 is released. The upper door 20 and the lower door 30 are now in a disconnected state.

[0031] As shown in FIG. 5, the operating unit 60 is provided with a display unit 62 for displaying whether the upper door 20 and the lower door 30 are connected or disconnected. For example, the display unit 62 can be provided as a slider that is provided in the slide hole 61 and moves in conjunction with the operating unit 60. When the operating unit 60 is operated upward to move the lower connecting member 32 upward and the lower connecting member 32 and the upper connecting member 22 are connected via the pin 34, the display unit 62 displays, for example, "Connected." On the other hand, when the upper door 20 and the lower door 30 are in a disconnected state, as shown in FIG. 2, the words "Connected" are not displayed. By checking whether or not the "Connected" message is displayed on the display unit 62, it is possible to visually determine whether the upper door 20 and the lower door 30 are connected.

[0032] In the upper and lower divided door 1, when the lower connecting member 32 of the lower door 30 moves upward and connects with the upper connecting member 22 of the upper door 20, the rotation of the upper lever handle 21 or the lower lever handle 31 can be transmitted to each other via a rotation transmission member, which will be described next. This also makes it possible to open and close the upper door 20 and the lower door 30 together by rotating either the upper lever handle 21 or the lower lever handle 31.

[0033] (Rotation transmission member) The upper connecting member 22 and the lower connecting member 32 are provided with rotation transmission members that transmit the rotation of one of the upper lever handle 21 or the lower lever handle 31 to the other. In the illustrated embodiment, as rotation transmission members, the upper connecting member 22 is provided with an upper transmission member 401, and the lower connecting member 32 is provided with a lower transmission member 402.

[0034] 2 and 3, the upper transmission member 401 includes a first gear 41 provided on a rotary shaft 411, and a connecting gear 43 that meshes with the first gear 41. The first gear 41 is provided so as to rotate in conjunction with the rotation of the upper lever handle 21.

[0035] The lower transmission member 402 includes a second gear 42 provided on a rotary shaft 421. The second gear 42 of the lower transmission member 402 is provided so as to be able to mesh with the connecting gear 43 of the upper transmission member 401. Note that the gears shown in the drawing are shown schematically, and detailed descriptions of the shapes of the teeth that mesh with each other are omitted.

[0036] 4, the second gear 42 is provided on an upper part of the side surface portion 33b of the lower connecting member 32, and the rotation shaft 421 is provided parallel to the axial direction (front-rear direction Y) of the rotation shaft 311 of the lower lever handle 31. Furthermore, the lower transmission member 402 includes a driven pulley 46 provided on the rotation shaft 421 of the second gear 42, a drive pulley 47 provided on the rotation shaft 311 of the lower lever handle 31, and an endless toothed belt 48 wound around the driven pulley 46 and the drive pulley 47. Both the driven pulley 46 and the drive pulley 47 are toothed pulleys that rotate while meshing with the toothed belt 48.

[0037] As described above, the lower connecting member 32 is movable between the lower position shown in FIGS. 2 and 3 and the upper position shown in FIGS. 5 and 6. When the lower connecting member 32 is in the lower position, the toothed belt 48 is loose. On the other hand, when the lower connecting member 32 moves upward, the driven pulley 46 moves upward relative to the drive pulley 47, increasing the distance between the drive pulley 47 and the driven pulley 46. This applies tension to the toothed belt 48, placing it in a taut state. The toothed belt 48 is taut when the lower connecting member 32 is in the upper position.

[0038] When the toothed belt 48 is in a tensioned state, the rotation of the lower lever handle 31 can be transmitted to the second gear 42. That is, by rotating the lower lever handle 31, the rotation shaft 311 rotates, and the drive pulley 47 rotates together with the rotation shaft 311. When the drive pulley 47 rotates, the toothed belt 48 that meshes with it rotates. The driven pulley 46 is provided on a rotation shaft 421 that is arranged parallel to the rotation shaft 311, and the rotation is transmitted via the toothed belt 48. The driven pulley 46 rotates together with the rotation shaft 421, and the second gear 42 also rotates together. Therefore, the second gear 42 rotates in conjunction with the rotation of the lower lever handle 31.

[0039] When the lower connecting member 32 is in this upper position, it is coupled with the upper connecting member 22, as shown in Figures 5 and 6. The second gear 42 of the lower transmission member 402 is provided in mesh with the connecting gear 43 of the upper transmission member 401. The rotation of the second gear 42, which is linked to the rotation of the lower lever handle 31, is transmitted to the first gear 41 via the connecting gear 43.

[0040] The upper transmission member 401 includes a driven pulley 44 attached to a rotation shaft 411 of the first gear 41, and a drive pulley attached to a rotation shaft (not shown) of the upper lever handle 21, with a toothed belt 45 wound around the driven pulley 44 and the drive pulley. The upper connecting member 22 is immovable in the vertical direction Z, and therefore the toothed belt 45 of the upper transmission member 401 is always tensioned.

[0041] In the upper transmission member 401, the rotation of the first gear 41 is further transmitted via the driven pulley 44 and toothed belt 45 as the rotation of the upper lever handle 21. Therefore, as the lower lever handle 31 is rotated, the rotation is transmitted via the lower transmission member 402 and the upper transmission member 401, and the upper lever handle 21 rotates in conjunction with it. The lower door 30 and the upper door 20 are linked to the lower lever handle 31 and the upper lever handle 21, respectively, and the latch bolts extend and retract to open the door.

[0042] Furthermore, when the lower connecting member 32 is in the upper position and connected to the upper connecting member 22, that is, when the upper door 20 and the lower door 30 are connected, turning the upper lever handle 21 transmits the rotation to the driven pulley 44 via the toothed belt 45, causing the first gear 41 to rotate together with the rotating shaft 411. The rotation of the first gear 41 is transmitted to the second gear 42 via the connecting gear 43. When the second gear 42 rotates, the lower lever handle 31 rotates in conjunction with it.

[0043] In this way, in the upper and lower divided door 1, the upper connecting member 22 in the upper door 20 and the lower connecting member 32 in the lower door 30 can be easily connected by simply operating the operating unit 60 in the vertical direction Z, and the upper door 20 and the lower door 30 can be easily switched between connected and unconnected states. When the upper connecting member 22 and the lower connecting member 32 are connected, the upper door 20 and the lower door 30 are connected, the second gear 42 meshes with the connecting gear 43, and the upper transmission member 401 and the lower transmission member 402 are arranged to be able to transmit rotation. The rotation of the upper lever handle 21 or the lower lever handle 31 can be transmitted to each other. Then, by rotating either the upper lever handle 21 or the lower lever handle 31, the upper door 20 and the lower door 30 can be opened and closed together.

[0044] When the upper door 20 and the lower door 30 are connected, whether to open or close by operating the upper lever handle 21 or the lower lever handle 31 can be selected based on the height of the user, making it easier for both the elderly and children to open and close, improving operability.

[0045] Furthermore, the toothed belt 48 is tensioned by the upward movement of the lower connecting member 32, and is set to a slack state in the lower position shown in Figures 2 and 3. In other words, when the upper door 20 and the lower door 30 are in a disconnected state, the toothed belt 48 of the lower transmission member 402 is in a slack state, and the rotational operation of the lower lever handle 31 is not transmitted. Therefore, in the disconnected state, the upper door 20 and the lower door 30 can be opened and closed separately, and it is possible to open only the upper door 20 to block the passage of pets or small children, or to open only the lower door 30 to block the view while ensuring ventilation.

[0046] In the upper door 20, the upper connecting member 22 is arranged so as not to be movable in the vertical direction Z, and therefore is not limited to the configuration in which the toothed belt 45 is wound around the driven side pulley 44 and the driving side pulley described above, and the rotation axis (not shown) of the upper lever handle 21 may be directly connected to the rotation axis 411 of the first gear 41, without the toothed belt 45 or the like being interposed.

[0047] (Embodiment 2) Figures 7 to 11 show the upper and lower split door 1 according to embodiment 2. Figures 7 and 8 show the upper connecting member 22 and the lower connecting member 32 provided inside the upper and lower split door 1, with Figure 7 being a front view and Figure 8 being a side view seen from the left side of Figure 7. Figure 9 is a perspective view showing the lower connecting member 32. Figures 10 and 11 show the joined state of the upper connecting member 22 and the lower connecting member 32, with Figure 10 being a front view and Figure 11 being a side view seen from the left side of Figure 10.

[0048] In the above-described first embodiment, the main body 23 of the upper connecting member 22 and the main body 33 of the lower connecting member 32 are configured to be substantially L-shaped in top view, but the upper and lower divided door 1 of the present disclosure is not limited to this configuration. For example, as shown in Figures 7 and 8, the upper connecting member 22 may be configured to be elongated in a block or box shape along the width direction X of the upper door 20, and the lower connecting member 32 may also be configured to be elongated in a block or box shape along the width direction X of the lower door 30.

[0049] In this case, it is preferable that the upper transmission member 401 and the lower transmission member 402 serving as rotation transmission members have a rotation shaft 511 of the first gear 51, a rotation shaft 521 of the second gear 52, and a rotation shaft 531 of the connecting gear 53 that are arranged parallel to the width direction X. The first gear 51, the second gear 52, and the connecting gear 53 are tapered gears that rotate about the rotation shafts 511, 521, and 531, respectively.

[0050] In the drawing, the details of the tooth shape of each gear are omitted, but the tooth portions of the first gear 51 and the tooth portions of the connecting gear 53 are configured so that the tooth trace directions in the meshing region have tapered portions that are inclined in the same direction with respect to the axial direction of the rotation shaft 511. In other words, the first gear 51 is configured as a tapered gear in which the reference pitch of the teeth in the direction along the rotation shaft 511 increases as it approaches the door edge side (left side in FIG. 7) of the upper door 20. In addition, the connecting gear 53 is configured as a tapered gear in which the reference pitch of the teeth in the direction along the rotation shaft 531 increases as it moves away from the door edge side.

[0051] In the lower transmission member 402, the toothed portion of the second gear 52 is provided so that the tooth trace directions are inclined in the same direction relative to the axial direction of the rotation shaft 521 (or the rotation shaft 531) in the meshing region with the toothed portion of the connecting gear 53. The second gear 52 is configured as a tapered gear in which the reference pitch of the toothed portion increases in diameter as it approaches the door edge of the lower door 30 in the direction along the rotation shaft 521.

[0052] Because the first gear 51, the second gear 52, and the connecting gear 53 are configured by tapered gears in this way, the connecting gear 53 and the second gear 52 can be brought into mesh with each other by bringing the second gear 52 relatively close to the connecting gear 53 along the axial direction of the rotation shafts 521 and 531. Therefore, the second gear 52 is provided to mesh with the connecting gear 53 by moving upward and in the width direction X, which is the axial direction (in this case, movement from the X1 side to the X2 side shown in FIG. 7).

[0053] The lower connecting member 32 is provided so as to be movable in the up-down direction Z and also in the width direction X which is the axial direction of the rotation shaft 521. The lower connecting member 32 is coupled to the upper connecting member 22 as shown in FIG. 10 by moving the lower connecting member 32 upward from the lower position shown in FIG. 7 and by moving the lower connecting member 32 axially from the X1 side to the X2 side in the width direction X.

[0054] 7 and 8, an upwardly protruding pin 35 is provided on the upper surface of the main body 33 of the lower connecting member 32. The upper end of the pin 35 is bent in the X2 direction and is formed into a generally L-shape or hook shape having a locking portion 351.

[0055] On the other hand, a pin hole 25 is formed in the lower surface of the main body 23 of the upper connecting member 22. The pin hole 25 is open downward of the main body 23. The pin hole 25 is bent in the X2 direction to correspond to the pin 35, and is formed as a hole portion having a step portion 251 and a generally L-shaped or hook-shaped cross section.

[0056] The slide hole 63 of the operating unit 60 is provided in a generally L-shape that is long in the vertical direction Z and has an upper portion extending in the width direction X (X2 direction). As shown in Fig. 7, the operating unit 60 can be moved upward along the slide hole 63 formed in the lower door 30 and further toward the X2 side. By operating the operating unit 60 along the slide hole 63, the lower connecting member 32 integrated with the operating unit 60 moves upward and also toward the X2 side.

[0057] As shown in Figures 10 and 11, the pin 35 of the lower connecting member 32 is inserted into the pin hole 25 of the upper connecting member 22, and the lower connecting member 32 is connected to the upper connecting member 22. The locking portion 351 of the pin 35 and the step portion 251 of the pin hole 25 correspond to a locking means, and the locking portion 351 of the pin 35 is locked into the step portion 251 of the pin hole 25, maintaining the connected state. The upper door 20 and the lower door 30 are connected together. The display unit 64 displays "Connecting."

[0058] In the upper and lower separate door 1 according to this embodiment, as rotation transmission members, the upper transmission member 401 includes a drive pulley, a driven pulley 44, and a toothed belt 45, while the lower transmission member 402 includes a driven pulley 56, a drive pulley 57, and a toothed belt 58. The toothed belt 58 is an endless belt material made of, for example, stretchable rubber, silicone, or resin.

[0059] 9, the second gear 52 is provided on an upper portion of the lower connecting member 32 on a rotation shaft 521 whose axial direction is the width direction X. In this case, the rotation shaft 521 of the second gear 52 is provided along a direction perpendicular to the axial direction (front-rear direction Y) of the rotation shaft 311 of the lower lever handle 31. The drive-side pulley 57 and the driven-side pulley 56 of the lower transmitting member 402 are provided so that their axial directions are perpendicular to each other, and the toothed belt 58 is provided so as to have an arrangement including a 90-degree twist.

[0060] As described above, the lower connecting member 32 is movable between the lower position shown in FIGS. 7 and 8 and the upper position shown in FIGS. 10 and 11. When the lower connecting member 32 is in the lower position, the toothed belt 58 is loose. On the other hand, when the lower connecting member 32 moves upward, the driven pulley 56 moves upward relative to the drive pulley 57, and tension is applied to the toothed belt 58, placing it in a taut state. The toothed belt 58 can follow the upward movement and X-direction movement of the second gear 52 while maintaining its taut state.

[0061] When the toothed belt 58 is in a tensioned state, the rotation of the lower lever handle 31 can be transmitted to the second gear 52. That is, by rotating the lower lever handle 31, the rotation shaft 311 rotates, the drive pulley 57 rotates together with the rotation shaft 311, and together with the rotation of the drive pulley 57, the driven pulley 56 rotates via the toothed belt 58. The second gear 52 rotates in conjunction with the rotation of the lower lever handle 31. The rotation of the second gear 52 is transmitted to the first gear 51 via the connecting gear 53 that meshes with it, and then to the upper lever handle 21.

[0062] Therefore, in the upper and lower separate door 1 according to this embodiment, when the upper connecting member 22 and the lower connecting member 32 are joined, the upper door 20 and the lower door 30 are connected, the second gear 52 meshes with the connecting gear 53, and the upper transmission member 401 and the lower transmission member 402 are provided so as to be able to transmit rotation. Rotation of one of the upper lever handle 21 or the lower lever handle 31 can be transmitted to the other. By rotating either the upper lever handle 21 or the lower lever handle 31, the upper door 20 and the lower door 30 can be opened and closed integrally. Moreover, because the first gear 51, the second gear 52, and the connecting gear 53 are tapered gears, the meshing of the teeth can be performed more smoothly, enabling reliable transmission of rotation.

[0063] In the upper and lower divided door 1 according to the present disclosure, the lower transmission member 402 is not limited to a configuration in which the rotation axes of the drive pulley 57 and the driven pulley 56 are arranged perpendicular to each other and the toothed belt 58 is arranged with a 90-degree twist, but may also be configured to be connected to the rotation axis 311 of the lower lever handle 31 via an appropriate bevel gear interposed between the drive pulley 57.

[0064] Furthermore, in the above-described embodiment, a configuration was exemplified in which the lower connecting member 32 moves upward and is connected to the upper connecting member 22, but the upper and lower divided door 1 according to the present disclosure is not limited to this, and may be configured, for example, in such a way that the upper connecting member 22 moves downward (and moves in the width direction) to be connected to the lower connecting member 32.

[0065] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the technical gist thereof, and all technical matters included in the technical ideas described in the claims are the subject of the present disclosure. The above-described embodiments are preferred examples, but various modifications can be realized from the disclosed contents, and such modifications are also included in the technical scope described in the claims.

[0066] Furthermore, the embodiments and other matters disclosed in this specification can be understood as the technical ideas described in the following supplementary notes.

[0067] (Appendix 1) An upper and lower divided door having an upper door and a lower door arranged below the upper door, The upper door is provided with a rotatable upper lever handle and an upper connecting member that integrally connects the upper door and the lower door, The lower door is provided with a lower lever handle that can be rotated, and a lower connecting member that is connected to the upper connecting member and integrally connects the lower door and the upper door, The upper connecting member and the lower connecting member are provided with a rotation transmission member that transmits rotation of one of the upper lever handle and the lower lever handle to the other, When the upper connecting member and the lower connecting member are connected, the rotation of the upper lever handle or the lower lever handle can be transmitted via the rotation transmission member, and the upper door and the lower door can be opened and closed as a unit by rotating either the upper lever handle or the lower lever handle.

[0068] (Appendix 2) In the upper and lower split door described in Appendix 1, the lower connecting member is provided so as to be movable at least in the vertical direction, and moves upward to be coupled to the upper connecting member and moves downward to be uncoupled from the upper connecting member; the rotation transmission member includes an upper transmission member provided on the upper connecting member and a lower transmission member provided on the lower connecting member, The upper and lower divided door is characterized in that the upper connecting member and the lower connecting member are coupled together to enable rotational transmission between the upper transmission member and the lower transmission member.

[0069] (Appendix 3) In the upper and lower split door described in Appendix 2, the upper transmission member includes a first gear that rotates in conjunction with rotation of the upper lever handle, and a connecting gear that meshes with the first gear; the lower transmission member includes a second gear that rotates in conjunction with the rotation of the lower lever handle, the second gear being capable of meshing with the connecting gear; A vertically divided door characterized in that the second gear and the connecting gear mesh with each other as the lower connecting member moves, thereby enabling rotational transmission between the upper transmission member and the lower transmission member.

[0070] (Appendix 4) In the upper and lower split door described in Appendix 3, the lower connecting member further includes a driven pulley provided on a rotation shaft of the second gear, a drive pulley provided on a rotation shaft of the lower lever handle, and a toothed belt wound around the driven pulley and the drive pulley, The toothed belt is configured so that tension is applied to the toothed belt when the lower connecting member moves upward and is in a taut state when the lower connecting member moves downward, The upper and lower divided door is characterized in that the second gear and the connecting gear are engaged with each other when the toothed belt is in a tensioned state.

[0071] (Appendix 5) In the upper and lower split door described in Appendix 3 or Appendix 4, the first gear, the second gear, and the connecting gear are tapered gears that rotate around a rotation axis, and the connecting gear and the second gear are provided such that tooth trace directions of tooth portions thereof are inclined in the same direction with respect to the rotation axis in a meshing region; the lower connecting member is provided so as to be movable in the vertical direction and in the axial direction of the pivot shaft, and is coupled to the upper connecting member by moving upward and axially relative to the upper connecting member; The upper and lower divided door is characterized in that the second gear is arranged to mesh with the connecting gear by the axial movement.

[0072] (Appendix 6) In the upper and lower split door described in any one of Supplementary Note 2 to Supplementary Note 5, the lower connecting member has a pin that protrudes upward from the lower door by upward movement and is coupled to the upper connecting member, the upper connecting member has a pin hole that opens downward and into which the pin is inserted, The upper and lower divided door is characterized in that the pin and the pin hole are provided with a locking means for maintaining a state of connection with each other.

[0073] (Appendix 7) In the upper and lower split door described in any one of Supplementary Note 2 to Supplementary Note 6, The lower door is provided with an operating portion for moving and operating the lower connecting member, The operating unit has a display unit that displays whether the upper door and the lower door are connected or not connected. [Explanation of symbols]

[0074] 1 Upper and lower split door 20 Upper door 21 Upper lever handle 22 Upper connecting member 23 Main body 24, 25 pin holes 241 Magnet (locking means) 251 Stepped portion (locking means) 30 Lower door 31 Lower lever handle 32 Lower connecting member 33 Main body 34, 35 pins 351 Locking part (locking means) 401 Upper transmission member (rotation transmission member) 41, 51 1st gear 43, 53 linked gear 402 Lower transmission member (rotation transmission member) 42, 52 2nd gear 60 Control section 62, 64 Display section

Claims

1. An upper and lower divided door having an upper door and a lower door arranged below the upper door, The upper door is provided with a rotatable upper lever handle and an upper connecting member that integrally connects the upper door and the lower door, The lower door is provided with a lower lever handle that can be rotated, and a lower connecting member that is connected to the upper connecting member and integrally connects the lower door and the upper door, The upper connecting member and the lower connecting member are provided with a rotation transmission member that transmits rotation of one of the upper lever handle and the lower lever handle to the other, When the upper connecting member and the lower connecting member are connected, the rotation of the upper lever handle or the lower lever handle can be transmitted via the rotation transmission member, and the upper door and the lower door can be opened and closed as a unit by rotating either the upper lever handle or the lower lever handle.

2. The upper and lower divided door according to claim 1, the lower connecting member is provided so as to be movable at least in the vertical direction, and moves upward to be coupled to the upper connecting member and moves downward to be uncoupled from the upper connecting member; the rotation transmission member includes an upper transmission member provided on the upper connecting member and a lower transmission member provided on the lower connecting member, The upper and lower divided door is characterized in that the upper connecting member and the lower connecting member are coupled together to enable rotational transmission between the upper transmission member and the lower transmission member.

3. The upper and lower divided door according to claim 2, the upper transmission member includes a first gear that rotates in conjunction with rotation of the upper lever handle, and a connecting gear that meshes with the first gear, the lower transmission member includes a second gear that rotates in conjunction with rotation of the lower lever handle, the second gear being capable of meshing with the connecting gear; The upper and lower divided door is characterized in that the second gear and the connecting gear mesh with each other when the lower connecting member moves, thereby enabling rotational transmission between the upper transmission member and the lower transmission member.

4. The upper and lower divided door according to claim 3, the lower connecting member further includes a driven pulley provided on a rotation shaft of the second gear, a drive pulley provided on a rotation shaft of the lower lever handle, and a toothed belt wound around the driven pulley and the drive pulley, The toothed belt is configured so that tension is applied to the toothed belt when the lower connecting member moves upward and is in a taut state when the lower connecting member moves downward, The upper and lower divided door is characterized in that, when the toothed belt is in a tensioned state, the second gear and the connecting gear are engaged with each other.

5. The upper and lower divided door according to claim 3, the first gear, the second gear, and the connecting gear are tapered gears that rotate around a rotation axis, and the connecting gear and the second gear are provided such that tooth trace directions of tooth portions thereof are inclined in the same direction with respect to the rotation axis in a meshing region; the lower connecting member is provided so as to be movable in the vertical direction and in the axial direction of the pivot shaft, and is coupled to the upper connecting member by moving upward and axially relative to the upper connecting member; The upper and lower divided door is characterized in that the second gear is arranged to mesh with the connecting gear by the axial movement.

6. The upper and lower divided door according to claim 2, the lower connecting member has a pin that protrudes upward from the lower door by upward movement and is coupled to the upper connecting member, the upper connecting member has a pin hole that opens downward and into which the pin is inserted, The upper and lower divided door is characterized in that the pin and the pin hole are provided with a locking means for maintaining a state of connection with each other.

7. The upper and lower divided door according to any one of claims 2 to 6, The lower door is provided with an operating portion for moving and operating the lower connecting member, The operating unit has a display unit that displays whether the upper door and the lower door are connected or not connected.

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