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] In the upper and lower divided door 1, the upper door 20 is provided with an upper lever handle 21, an upper connecting member 22, and a pulling-up member 26 that can pull the upper connecting member 22 upward. The lower door 30 is provided with a lower lever handle 31, a lower connecting member 32, and a pulling-down member 36 that can pull the lower connecting member 32 downward. In conjunction with the upward rotation of the upper lever handle 21, the upper connecting member 22 moves from a lower position to an upper position. In conjunction with the upward rotation of the lower lever handle 31, the lower connecting member 32 moves from an upper position to a lower position. These operations allow the upper door 20 or the lower door 30 to be opened and closed freely.

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 for achieving the above 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, an upper connecting member that integrally connects the upper door and the lower door, and a lifting member that is connected to the upper lever handle and the upper connecting member and can lift the upper connecting member upward, and the lower door is provided with a lower lever handle that can be rotated, a lower connecting member that integrally connects the lower door and the upper door, and a lifting member that is connected to the lower lever handle and the lower connecting member and can lift the lower connecting member downward. A pull-down member that can be pulled down is provided, and the upper connecting member in a lower position and the lower connecting member in an upper position are fitted together and connected, and the pull-up member moves the upper connecting member from a lower position to an upper position in conjunction with the upward rotation of the upper lever handle, thereby disengaging from the lower connecting member and allowing the upper door to be opened and closed freely, and the pull-down member moves the lower connecting member from an upper position to a lower position in conjunction with the upward rotation of the lower lever handle, thereby disengaging from the upper connecting member and allowing the lower door to be opened and closed freely.

[0008] Furthermore, in the upper and lower divided door, the upper connecting member has a recess that opens downward, and the lower connecting member has a convex portion that protrudes upward and fits into the recess, and the convex portion of the lower connecting member is arranged to protrude further than the upper edge of the lower door when in the upper position, and is retracted below the upper edge by rotating the lower lever handle upward.

[0009] In the vertically divided door, it is preferable that the lower connecting member is provided with an elastic member and is biased upward, and that the biasing force of the elastic member causes the lower connecting member to return from the lower position to the upper position.

[0010] In addition, in the upper and lower divided door, it is preferable that the upper connecting member has a display unit facing the visible surface of the upper door and a cover unit covering the display unit, and that the cover unit is arranged to be slidable in the vertical direction along the display unit.

[0011] Furthermore, in the upper and lower divided door, it is preferable that the lower connecting member has a support portion extending upward, and the cover portion is supported from below by the support portion with the upper connecting member and the lower connecting member joined, and that the cover portion covers the display portion when the upper connecting member is in the upper position, and slides downward in response to the movement of the lower connecting member to the lower position, thereby covering the display portion.

[0012] In the vertically divided door, the upper connecting member is preferably provided to pass through a support rod having an axial direction in the vertical direction, and is provided to be slidable on the support rod so as to be movable in the vertical direction.

[0013] In the vertically divided door, it is preferable that the lower connecting member is provided to pass through a support rod whose axial direction is the vertical direction, and is provided to be slidable on the support rod so as to be movable in the vertical direction. [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] FIG. 2 is a front view showing an upper and lower divided door according to an embodiment of the present disclosure. [Figure 2] 10 is a perspective view showing an upper connecting member and a lower connecting member provided inside the upper and lower divided doors. FIG. [Figure 3] 10A to 10C are explanatory diagrams showing the opening and closing of the upper door of the upper and lower divided doors in order. [Figure 4] FIG. 4 is an explanatory diagram showing an enlarged view of part A1 in FIG. 3. [Figure 5] FIG. 4 is an explanatory diagram showing an enlarged view of part A2 in FIG. 3. [Figure 6] 6 is an enlarged view of part A2 in FIG. 3, illustrating the state subsequent to FIG. 5. FIG. [Figure 7] FIG. 4 is an explanatory diagram showing an enlarged view of part A3 in FIG. 3. [Figure 8] FIG. 4 is an explanatory diagram showing an enlarged view of the A4 portion in FIG. 3. [Figure 9] FIG. 4 is an explanatory diagram showing an enlarged view of part A5 in FIG. 3. [Figure 10] 10A to 10C are explanatory diagrams showing the opening and closing of the lower door of the upper and lower divided doors in order. [Figure 11] 11 is an explanatory diagram showing an enlarged view of part B1 in FIG. 10. FIG. [Figure 12] 11 is an explanatory diagram showing an enlarged view of part B2 in FIG. 10. FIG. [Figure 13] 12. FIG. 13 is an enlarged view of part B2 in FIG. 10, illustrating the state following FIG. [Figure 14] 11 is an explanatory diagram showing an enlarged view of part B3 in FIG. 10. FIG. [Figure 15] 11 is an explanatory diagram showing an enlarged view of part B4 in FIG. 10. FIG. [Figure 16] FIG. 11 is an explanatory diagram showing an enlarged view of part B5 in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] An upper and lower divided door according to an embodiment of the present disclosure will be described with reference to the drawings.

[0017] Fig. 1 is a front view showing the upper and lower divided door 1 according to the embodiment. Fig. 1 shows the upper and lower divided door 1 as seen from inside a room or the like, with the X direction in the figure 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 FIG. 1, the upper and lower divided door 1 is a single-wing hinged door comprising an upper door 20 and a lower door 30 disposed below the upper door 20. The upper door 20 and the lower door 30 each have a flat door panel and are attached to a vertical frame 12 of an opening frame provided in an opening 11 via hinges or the like (not shown) so as to be able to open and close. 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 is provided with an upper lever handle 21 that can be rotated, and the lower door 30 is provided with a lower lever handle 31 that can also be rotated. Both the upper lever handle 21 and the lower lever handle 31 are provided in positions close to the door edge.

[0020] Furthermore, the door leading sides of the upper door 20 and the lower door 30 are each provided with a latch device (not shown) as a mechanism independent of the upper lever handle 21 and the lower lever handle 31. When the upper and lower lever handles 21, 31 of each latch device of the upper door 20 and the lower door 30 are rotated downward, the protruding latch of the upper door 20 or the lower door 30 is retracted, thereby disengaging the latch.

[0021] The upper and lower divided door 1 according to this embodiment can be opened and closed as a single unit by connecting the upper door 20 and the lower door 30, and can also be opened and closed separately by disconnecting the upper door 20 and the lower door 30 and setting them into an unconnected state. In this case, the mechanism described below is configured so that the upper door 20 and the lower door 30 can be connected or unconnected by rotating the upper lever handle 21 or the lower lever handle 31.

[0022] 2 is a perspective view showing the upper connecting member 22 and the lower connecting member 32 provided inside the upper and lower divided door 1. The upper connecting member 22 is provided on the upper door 20, and the lower connecting member 32 is provided on the lower door 30, but in the drawing, the upper door 20 and the lower door 30 are shown by two-dot chain lines (imaginary lines) to make the upper connecting member 22 and the lower connecting member 32 easier to see.

[0023] As shown in the figure, the upper door 20 is provided with an upper lever handle 21, and an upper connecting member 22 is provided below the rotation shaft 211 of the upper lever handle 21. The upper lever handle 21 is provided so as to be rotatable around the rotation shaft 211 extending in the front-to-rear direction Y. The upper lever handles 21 are disposed on the front side Y1 and the back side Y2 of the upper door 20, respectively.

[0024] A lower lever handle 31 is provided on the lower door 30, and a lower connecting member 32 is provided above the rotation shaft 311 of the lower lever handle 31. The lower lever handle 31 is provided so as to be rotatable around the rotation shaft 311 extending in the front-to-rear direction Y. The lower lever handles 31 are disposed on both the front side Y1 and the back side Y2 of the lower door 30.

[0025] The upper connecting member 22 and the lower connecting member 32 are arranged in an internal storage space 40 that straddles the upper door 20 and the lower door 30. The upper connecting member 22 is arranged in the upper half of the storage space 40 inside the upper door 20. The lower connecting member 32 is arranged in the lower half of the storage space 40 inside the lower door 30.

[0026] The upper connecting member 22 is formed with a recess 24 in the main body 23. In the illustrated embodiment of the upper connecting member 22, the main body 23 is formed in a block or box shape with a generally rectangular cross section, and the recess 24 is provided opening to the underside of the main body 23. The recess 24 is formed as a groove extending in the width direction X of the generally rectangular cross section. A support rod 41 with its axial direction aligned in the vertical direction Z is provided to pass through the axial core of the main body 23, supporting the main body 23 within the storage space 40 and restricting the range of movement of the main body 23 in the vertical direction Z.

[0027] 2, the protrusion 34 of the lower connecting member 32 is fitted from below into the recess 24 of the upper connecting member 22. The lower connecting member 32 has the protrusion 34 above the main body 33. The protrusion 34 is provided in an upwardly protruding shape so as to fit into the recess 24 of the upper connecting member 22, and has an outer shape with a generally rectangular cross section that corresponds to the shape of the recess 24.

[0028] Although the recess 24 of the upper connecting member 22 and the protrusion 34 of the lower connecting member 32 are shown as having a generally rectangular cross section that allows them to fit together, the present disclosure is not limited to this configuration, and may instead have a cylindrical recess and a columnar protrusion fitted together, for example. Furthermore, the shapes of the upper connecting member 22 and the lower connecting member 32 are not limited to those shown in the drawings, and may be any shape.

[0029] A support rod 42, whose axial direction is the vertical direction Z, is also provided to penetrate the axial core of the main body 33 of the lower connecting member 32. The main body 33 of the lower connecting member 32 is provided so as to be able to slide on the support rod 42 and move in the vertical direction Z. The support rod 42 supports the main body 33 within the storage space 40 and also restricts the range of movement of the main body 33 in the vertical direction Z.

[0030] Furthermore, the lower connecting member 32 is provided with an elastic member and is provided so as to be biased upward. In the illustrated embodiment, the elastic member is a spring member 37 such as a coil spring (compression spring) that is wrapped around a support rod 42 that penetrates downward through the main body 33. The spring member 37 is disposed within the storage space 40 between the lower surface of the main body 33 and the lower end of the support rod 42.

[0031] The main body 33 is normally biased so as to be pushed upward by the biasing force of the spring member 37. The main body 33 can move in the up and down direction by moving to a lower position against the biasing force of the spring member 37 and returning to the upper position by the biasing force.

[0032] 2, the upper connecting member 22 is in a lower position and can move upward along the support rod 41. In contrast, the lower connecting member 32 is in an upper position and can move downward along the support rod 42. The recessed portion 24 and the protruding portion 34 are fitted together, connecting the upper connecting member 22 and the lower connecting member 32. The upper door 20 and the lower door 30 are connected to each other.

[0033] In the upper connecting member 22, a display unit 25 is provided on the outer surface of the main body 23. More specifically, the display units 25 are provided on the outer surface side of the recess 24, on two facing surfaces of the main body 23 (a front facing surface on the Y1 side and a rear facing surface on the Y2 side).

[0034] These display units 25 are arranged to face the visible surface of the upper door 20. When the upper door 20 and the lower door 30 are connected, that is, when the upper connecting member 22 and the lower connecting member 32 are joined, the display units 25 are arranged so as to be visible on the visible surface of the upper and lower divided door 1. The display units 25 have written on them, for example, words such as "Connecting" or "Doors together" which indicate that the upper door 20 and the lower door 30 are connected.

[0035] The upper connecting member 22 further includes a cover portion 27 that covers the display portion 25. The cover portion 27 is disposed outside the visible surface of the main body portion 23 within the storage space 40 and is provided so as to be slidable in the vertical direction Z along the surface of the display portion 25. In the illustrated embodiment, the cover portion 27 is formed in a flat plate shape and has approximately the same size as the visible surface of the main body portion 23. In the state shown in FIG. 2, the cover portion 27 is disposed above the display portion 25, making the display portion 25 visible.

[0036] The cover portion 27 is placed on the support portions 35 of the lower connecting member 32 and is supported from below by the support portions 35. As shown in the figure, the lower connecting member 32 has columnar support portions 35 extending upward on the main body portion 33. In the illustrated embodiment, two support portions 35 are evenly arranged on the front side Y1 of the main body portion 33 and two support portions 35 are evenly arranged on the rear side Y2 of the main body portion 33, and each support portion 35 is integrally erected on the main body portion 33.

[0037] As the main body 33 of the lower connecting member 32 moves downward, the cover 27 placed on the support 35 can move downward together with the support 35. Also, when the main body 33 moves upward and the support 35 rises, the cover 27 can also move upward following this.

[0038] In order to move the upper connecting member 22 upward, the upper connecting member 22 is further provided with a pulling-up member 26 that can pull up the main body 23 upward. The upper end of the pulling-up member 26 is connected to the rotation shaft 211 of the upper lever handle 21, and the lower end is connected to the main body 23. In addition, in order to move the lower connecting member 32 downward, the lower connecting member 32 is provided with a pulling-down member 36 that has an upper end connected to the main body 33 and a lower end connected to the rotation shaft 311 of the lower lever handle 31, and is capable of pulling down the main body 33 downward. The pulling-up member 26 and the pulling-down member 36 are both string-like or wire-like linear members that are inserted through the shaft cores of the support rods 41 and 42, respectively.

[0039] As shown in Fig. 2, when the upper door 20 and the lower door 30 of the upper and lower divided door 1 are connected, the upper door 20 and the lower door 30 can be opened and closed as a unit by rotating downward either one of the upper and lower lever handles 21, 31 of the upper door 20 or the lower door 30. The fact that the upper door 20 and the lower door 30 are connected can be easily determined by checking the display unit 25, as it can be seen from the front of the upper and lower divided door 1 as shown in Fig. 1.

[0040] (Opening and closing the upper door) Fig. 3 is an explanatory diagram showing in sequence how the upper door 20 of the upper and lower divided door 1 is opened and closed, and Figs. 4 to 9 are explanatory diagrams showing enlarged views of parts A1 to A5 in Fig. 3. For ease of explanation, in Figs. 4 to 9, the front half Y1 of the upper door 20 and the lower door 30 in the drawings is shown by a two-dot chain line (imaginary line), and the internal structure is partially shown.

[0041] In the upper and lower divided door 1, when the connection between the upper door 20 and the lower door 30 is released and the upper door 20 and the lower door 30 are put into a non-connected state, the upper door 20 or the lower door 30 can be opened and closed independently. In this case, the desired door can be opened by operating the lever handle (21, 31) provided on either the upper door 20 or the lower door 30 that is to be opened. For example, as shown in FIG. 3, when opening or closing the upper door 20, the upper lever handle 21 provided on the upper door 20 is rotated.

[0042] As shown in an enlarged view of part A1 in Figure 4, when the upper door 20 and the lower door 30 are connected, the cover part 27 is retracted upward relative to the display part 25, making the display part 25 visible. As described above, the display part 25 displays the message "connected" and the like, so it is easy to know that the doors are connected and that an operation to release the connection is required.

[0043] Next, as shown in an enlarged view of part A2 in FIG. 5, when it is desired to open the upper door 20, the upper lever handle 21 is rotated. At this time, the upper lever handle 21 is rotated upward. The rotation shaft 211 of the upper lever handle 21 rotates in conjunction with this, and the lifting member 26 connected to the rotation shaft 211 is wound up around the rotation shaft 211. As a result, the main body 23 moves upward while sliding on the support rod 41 in conjunction with the rotation of the upper lever handle 21. The display unit 25 begins to be hidden behind the cover unit 27.

[0044] As shown in FIG. 6, by further rotating the upper lever handle 21, the main body 23 moves to an upper position, and the display unit 25 is covered and hidden by the cover unit 27. The upper edge of the cover unit 27 is provided with a protruding locking portion 271 that protrudes toward the main body 23. The upper surface of the main body 23 locks with the locking portion 271 of the cover unit 27. The recessed portion 24 of the main body 23 disengages from the protruding portion 34 of the lower connecting member 32. The lower surface of the main body 23 and the lower edge of the cover unit 27 can pass above the lower connecting member 32. The upper connecting member 22 is no longer connected to the lower connecting member 32, and the upper door 20 can be opened and closed by pushing and pulling.

[0045] As shown in an enlarged view of part A3 in Figure 7, by pushing the upper door 20, for example, in the direction Y2 toward the rear, the upper door 20 is opened independently from the lower door 30. The upper storage space 401 that constitutes the storage space 40 is separated from the lower storage space 402, and appears as a recess in the lower edge 201 of the upper door 20. In the lower door 30, the lower connecting member 32 is in an upper position, and the protrusion 34 and the support part 35 protrude above the upper edge 301 of the lower door 30.

[0046] As shown in an enlarged view of part A4 in Figure 8, when the upper door 20 is opened, the main body 23 and cover 27 of the upper connecting member 22 return to their lower positions due to their own weight. As the main body 23 descends, the lifting member 26 is pulled downward, causing the upper lever handle 21 to rotate and return to its original position (for example, a horizontal position). The lower surface of the main body 23 is positioned flush with the lower edge 201 of the upper door 20, allowing the upper connecting member 22 to remain uncoupled from the lower connecting member 32.

[0047] When closing the opened upper door 20, the upper lever handle 21 is rotated upward again to move the upper connecting member 22 to the upper position and pull the upper door 20 back toward the front Y1. As a result, as shown in an enlarged view of part A5 in Figure 9, the recessed portion 24 and the protruding portion 34 fit together, reconnecting the upper connecting member 22 and the lower connecting member 32, and connecting the upper door 20 and the lower door 30. The cover portion 27 is supported by the support portions 35, and the display portion 25 appears visibly between the left and right support portions 35.

[0048] In this way, cover portion 27 covers and conceals display portion 25 when upper connecting member 22 is in the upper position (FIG. 7) and when upper door 20 is open (FIG. 8), but allows display portion 25 to be displayed when upper door 20 and lower door 30 are connected (FIGS. 4 and 9). This makes it possible to prevent erroneous opening and closing operations.

[0049] Furthermore, in the upper and lower divided door 1, the upper door 20 is opened by operating the upper lever handle 21, which is an easy-to-understand and straightforward operation since it is the desired door opening and closing operation. Furthermore, the rotation of the upper lever handle 21 to release the connection is performed in an unfamiliar direction, i.e., upward. Therefore, even if the upper lever handle 21 is rotated downward, which is a common rotation direction, when the upper door 20 and the lower door 30 are connected, the connection will not be released, and the connected state can be maintained, preventing the upper door 20 from being opened unintentionally.

[0050] (Opening and closing the lower door) Figure 10 is an explanatory diagram showing in sequence how the lower door 30 of the upper and lower divided door 1 is opened and closed, and Figures 11 to 16 are explanatory diagrams showing enlarged views of parts B1 to B5 in Figure 10. Note that in Figures 11 to 16, the front half Y1 of the upper door 20 and the lower door 30 is also shown by two-dot chain lines (imaginary lines), and the internal structure is partially shown.

[0051] When the connection between the upper door 20 and the lower door 30 is released and the lower door 30 is opened, the lower lever handle 31 provided on the lower door 30 is rotated. As shown in FIG. 11, when the upper door 20 and the lower door 30 are connected, the lower connecting member 32 is in an upper position and the protrusion 34 is provided so as to protrude beyond the lower door 30. From this state, the lower lever handle 31 is rotated as shown in an enlarged view of part B2 in FIG. 12. At this time, the lower lever handle 31 is rotated upward.

[0052] The rotation shaft 311 of the lower lever handle 31 rotates in conjunction with the rotation operation, and the pull-down member 36 connected to the rotation shaft 311 is wound up around the rotation shaft 311. As a result, the main body 33 moves downward while sliding on the support rod 42 in conjunction with the rotation operation of the lower lever handle 31. The spring member 37 attached to the support rod 42 is pressed and compressed by the main body 33. As the support part 35 moves downward together with the main body 33, the cover part 27 also moves downward following the support part 35. The display part 25 begins to be hidden behind the cover part 27.

[0053] As shown in FIG. 13 , by further rotating the lower lever handle 31 upward, the pull-down member 36 moves the main body 33 downward in conjunction with the rotation operation. This causes the main body 33 to move to a lower position within the lower storage space 402. Following the movement of the main body 33 to the lower position, the cover 27 slides downward together with the support portion 35. The locking portion 271 of the cover 27 locks onto the upper surface of the main body 23, and the display unit 25 is covered by the cover 27. In addition, the protrusion 34 of the main body 33 disengages from the recess 24 of the upper connecting member 22. The upper connecting member 22 is released from the lower connecting member 32, allowing the upper surface of the protrusion 34 and the upper end surface of the support portion 35 to pass below the upper connecting member 22, allowing the lower door 30 to be opened and closed freely.

[0054] In this state, by holding the lower lever handle 31 and pushing or pulling the lower door 30, the lower door 30 can be opened or closed independently of the upper door 20. As shown in an enlarged view of part B3 in Figure 14, the convex portion 34 of the lower connecting member 32 is retracted downward from the upper edge 301 of the lower door 30 by rotating the lower lever handle 31 upward. For example, by pulling the lower door 30 in the front Y1 direction, the lower door 30 can be opened as shown in the figure.

[0055] 15, when the lower door 30 is opened and the lower lever handle 31 is released, the main body 33 of the lower connecting member 32 returns from the lower position to the upper position due to the biasing force of the spring member 37, and the convex portion 34 and the support portion 35 protrude from the upper edge 301 of the lower door 30. The lower connecting member 32 is maintained in a state where it is not coupled to the upper connecting member 22. Furthermore, in conjunction with the upward movement of the main body 33, the pull-down member 36 is pulled up, and the lower lever handle 31 rotates downward together with the rotation shaft 311 to return to its original state (for example, a horizontal position).

[0056] To close the opened lower door 30, the lower lever handle 31 is rotated upward again to move the lower connecting member 32 to the lower position, as shown in FIG. 14. In this state, the lower door 30 is returned toward the rear Y2, and the lower lever handle 31 is released. As a result, as shown in an enlarged view of portion B5 in FIG. 16, the lower connecting member 32 can be reconnected to the upper connecting member 22, and the upper door 20 and the lower door 30 are connected. The cover portion 27 is supported by the support portion 35, and the display portion 25 is visible.

[0057] In this way, cover portion 27 covers and conceals display portion 25 when lower connecting member 32 is in the lower position (FIG. 13) and when lower door 30 is open (FIG. 14), but allows display portion 25 to be displayed when upper door 20 and lower door 30 are connected (FIGS. 11 and 16). This makes it possible to prevent erroneous opening and closing operations.

[0058] Furthermore, in the upper and lower divided door 1, the lower door 30 is opened by operating the lower lever handle 31, which is an easy-to-understand and straightforward operation since it is the desired door opening and closing operation. Furthermore, the lower lever handle 31 is rotated upward to release the connection, which is an unfamiliar rotation operation. Therefore, even if the lower lever handle 31 is rotated downward, which is a common rotation direction, when the upper door 20 and the lower door 30 are connected, the connection will not be released, and the connected state can be maintained, preventing the lower door 30 from being opened unintentionally.

[0059] The vertically divided door 1 configured as described above can be used by opening and closing the upper door 20 and the lower door 30 separately, and can also be operated normally as a single unit without any discomfort, improving convenience. For example, if hot air from the heater or cold air from the cooler is stagnating in a room during periods when air conditioning is in use, one of the upper door 20 or the lower door 30 can be opened to eliminate the stagnation and keep the vertically divided door 1 half-open in an energy-efficient manner. Furthermore, in spring and autumn, when air conditioning is not in use, one of the upper door 20 or the lower door 30 can be opened to promote air circulation and provide a comfortable indoor environment.

[0060] Furthermore, when the upper door 20 and the lower door 30 are connected, they can be opened and closed as a unit by operating either the upper lever handle 21 or the lower lever handle 31, so that a lever handle at a height that is easy to use depending on height, etc., can be selected, making it easier for both elderly people and children to open, and improving operability.

[0061] 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.

[0062] The following supplementary notes are further disclosed regarding the technical contents described in the above-mentioned embodiments.

[0063] (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, an upper connecting member that integrally connects the upper door and the lower door, and a lifting member that is connected to the upper lever handle and the upper connecting member and can lift the upper connecting member upward, The lower door is provided with a lower lever handle that can be rotated, a lower connecting member that integrally connects the lower door and the upper door, and a pull-down member that is connected to the lower lever handle and the lower connecting member and can pull down the lower connecting member, the upper connecting member in the lower position and the lower connecting member in the upper position are fitted together and coupled, The lifting member moves the upper connecting member from a lower position to an upper position in conjunction with the upward rotation of the upper lever handle, and is disengaged from the lower connecting member, allowing the upper door to be opened and closed freely. The pull-down member moves the lower connecting member from an upper position to a lower position in conjunction with the upward rotation of the lower lever handle, thereby disengaging from the upper connecting member and allowing the lower door to be opened and closed freely.

[0064] (Appendix 2) The upper and lower split door according to appendix 1, the upper connecting member has a recess that opens downward, the lower connecting member has a protrusion that protrudes upward and fits into the recess, An upper and lower divided door characterized in that the convex portion of the lower connecting member is arranged to protrude beyond the upper edge of the lower door when in the upper position, and is retracted below the upper edge by rotating the lower lever handle upward.

[0065] (Appendix 3) The upper and lower split door according to appendix 1 or 2, The upper and lower divided door is characterized in that the lower connecting member is provided with an elastic member and is biased upward, and the biasing force of the elastic member causes the door to return from a lower position to an upper position.

[0066] (Appendix 4) The upper and lower divided door according to appendix 1 to 3, The upper connecting member includes a display portion provided to face the front surface of the upper door and a cover portion that covers the display portion, The cover portion is slidable in the vertical direction along the display portion.

[0067] (Appendix 5) The upper and lower split door according to appendix 4, the lower connecting member includes a support portion extending upward; the cover portion is supported from below by the support portion in a state in which the upper connecting member and the lower connecting member are coupled together, The cover portion is An upper and lower divided door characterized in that the upper connecting member covers and conceals the display unit when it is in the upper position, and slides downward in response to the movement of the lower connecting member to the lower position, thereby covering and concealing the display unit.

[0068] (Appendix 6) The upper and lower divided door according to any one of appendices 1 to 5, The upper and lower divided door is characterized in that the upper connecting member is inserted through a support rod whose axial direction is the vertical direction and is slidable along the support rod so as to be movable in the vertical direction.

[0069] (Appendix 7) An upper and lower divided door according to any one of appendices 1 to 6, The upper and lower divided door is characterized in that the lower connecting member is inserted through a support rod whose axial direction is the vertical direction and is slidable along the support rod so as to be movable in the vertical direction. [Explanation of symbols]

[0070] 1 Upper and lower split door 20 Upper door 21 Upper lever handle 211 Rotating shaft 22 Upper connecting member 23 Main body 24 recess 25 Display section 26 Lifting member 27 Cover 30 Lower door 31 Lower lever handle 311 Rotating shaft 32 Lower connecting member 33 Main body 34 Convex part 35 Support part 36 Pulling member 37 Spring member (elastic member) 40 Storage space 41, 42 Support rod

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, an upper connecting member that integrally connects the upper door and the lower door, and a lifting member that is connected to the upper lever handle and the upper connecting member and can lift the upper connecting member upward, The lower door is provided with a lower lever handle that can be rotated, a lower connecting member that integrally connects the lower door and the upper door, and a pull-down member that is connected to the lower lever handle and the lower connecting member and can pull down the lower connecting member, the upper connecting member in the lower position and the lower connecting member in the upper position are fitted together and coupled, The lifting member moves the upper connecting member from a lower position to an upper position in conjunction with the upward rotation of the upper lever handle, and is disengaged from the lower connecting member, allowing the upper door to be opened and closed freely. The pull-down member moves the lower connecting member from an upper position to a lower position in conjunction with the upward rotation of the lower lever handle, thereby disengaging from the upper connecting member and allowing the lower door to be opened and closed freely.

2. The upper and lower divided door according to claim 1, the upper connecting member has a recess that opens downward, the lower connecting member has a protrusion that protrudes upward and fits into the recess, An upper and lower divided door characterized in that the convex portion of the lower connecting member is arranged to protrude beyond the upper edge of the lower door when in the upper position, and is retracted below the upper edge by rotating the lower lever handle upward.

3. The upper and lower divided door according to claim 1, The upper and lower divided door is characterized in that the lower connecting member is provided with an elastic member and is biased upward, and the biasing force of the elastic member causes the door to return from a lower position to an upper position.

4. The upper and lower divided door according to claim 1, The upper connecting member includes a display portion provided to face the front surface of the upper door and a cover portion that covers the display portion, The cover portion is slidable in the vertical direction along the display portion.

5. The upper and lower divided door according to claim 4, the lower connecting member includes a support portion extending upward; the cover portion is supported from below by the support portion in a state in which the upper connecting member and the lower connecting member are coupled together, The cover portion is An upper and lower divided door characterized in that the upper connecting member covers and conceals the display unit when it is in the upper position, and slides downward in response to the movement of the lower connecting member to the lower position, thereby covering and concealing the display unit.

6. The upper and lower divided door according to claim 1, The upper and lower divided door is characterized in that the upper connecting member is inserted through a support rod whose axial direction is the vertical direction and is slidable along the support rod so as to be movable in the vertical direction.

7. The upper and lower divided door according to claim 1, The upper and lower divided door is characterized in that the lower connecting member is inserted through a support rod whose axial direction is the vertical direction and is slidable along the support rod so as to be movable in the vertical direction.

Images