JP7614057B2 - Fittings - Google Patents

Description

This invention relates to a fitting in which an indoor shoji screen and an outdoor shoji screen are arranged on a frame so that they can move up and down, and a rope-like body that connects the two shoji screens is wound around a pulley, so that the two shoji screens move in an up-down reversed manner.

Some front door and other facings have built-in fittings known as sash windows. Sash windows are arranged with an inner screen on the inside of the room and an outer screen on the outside that can each move up and down. Some sash windows of this type are designed so that the inner and outer screens are connected by a rope such as a wire, and a pulley is attached to the frame, and the rope is wrapped around the pulley so that the inner and outer screens are connected upside down (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 8-218731

The pulleys mentioned above are generally attached to building materials such as vertical frames via a base and mounting screws. However, when moving the inner and outer shoji screens, external forces are repeatedly applied to the pulleys mentioned above, and there is a concern that the mounting screws may loosen over long periods of use, causing problems with the opening and closing of the shoji screens. One possible solution to this problem would be to increase the number of mounting screws, but this would inevitably make the installation work more complicated.

In view of the above situation, the present invention aims to provide a fixture that can prevent malfunctions of shoji screens without complicating installation work.

In order to achieve the above object, the fitting according to the present invention is a fitting in which an indoor shoji screen and an outdoor shoji screen are arranged so that they can move up and down on a frame composed of left and right vertical building materials and upper and lower horizontal building materials, a pulley is rotatably attached to the vertical building materials, and a rope-like body connecting the shoji screens is wrapped around the pulley, so that the shoji screens are connected upside down, and the vertical building materials are provided with a partition wall section between the indoor shoji screen and the outdoor shoji screen, and the partition wall section is provided with a communication hole at the position where the pulley is attached, the pulley is rotatably supported on a base via a support shaft, the base is attached to the visible surface of the vertical building materials while passing through the communication hole of the partition wall section, and the base is provided with a fitting groove into which the partition wall section fits in the lower part, and a protrusion is provided in the upper part to be fitted between the visible surface of the vertical building materials and the inner wall surface of the communication hole.

According to the present invention, the partition wall portion fits into the fitting groove of the base, limiting the movement of the base in the forward direction relative to the vertical building material, and the protruding portion of the base abuts against the inner wall surface of the communication hole, limiting the movement of the base in the direction away from the vertical building material. Therefore, for example, the movement of the base relative to the vertical building material can be limited without increasing the number of mounting screws, making it possible to prevent malfunction of the shoji screen without complicating the installation work.

FIG. 1 is a view of a front door to which a fitting according to an embodiment of the present invention is applied, as seen from the inside of the room. FIG. 2 is a vertical cross-sectional view of the entrance door shown in FIG. 1 . FIG. 2 is a cross-sectional view of the entrance door shown in FIG. 1 . 2A and 2B show the front door shown in FIG. 1, in which (a) is a perspective view of the front door with the two shoji screens closed, and (b) is a perspective view of the front door with the two shoji screens open. FIG. 2 is a perspective view showing the position of a pulley relative to two shoji screens in the entrance door shown in FIG. 1 . 2A and 2B show a pulley applied to the entrance door shown in FIG. 1, in which FIG. 2A is a perspective view of the pulley supported on a base, and FIG. 2B is a front view of the pulley supported on the base. 7A and 7B are views showing the state in which the pulley and the base shown in FIG. 6 are attached to a vertical building material, in which FIG. 7A is a side view of the main part, and FIG. 7B is a cross-sectional view of the main part. FIG. 7 is a perspective view of a main part showing a state in which the pulley and the base shown in FIG. 6 are attached to a vertical building material. 7A and 7B show the state in which the pulley and the base shown in FIG. 6 are attached to a vertical building material, where FIG. 7A is a perspective view of the main part as seen from below, and FIG. 7B is a perspective view of the main part as seen from above.

Below, a preferred embodiment of the fittings according to the present invention will be described in detail with reference to the attached drawings. For convenience, the terms "prospect direction" and "finding direction" may be used below. The "prospect direction" is the direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the prospect direction may be referred to as a "prospect surface." The "finding direction" is the direction perpendicular to the prospect direction for items that extend horizontally, such as a bottom frame. For items that extend vertically, such as a vertical frame, the horizontal direction perpendicular to the prospect direction is called the "finding direction." A surface along the prospect direction may be called a "finding surface."

Figures 1 to 4 show fittings according to an embodiment of the present invention. The fittings shown here are used as door panels for front doors. The front door is made up of a door frame 4 made up of an upper frame 1, a lower frame 2, and left and right vertical frames 3, and a door panel 6 supported via hinges 5 so that it can be opened and closed. The door panel 6 is made up of a frame 10 and two shoji screens 20A, 20B.

The frame body 10 is formed by framing the upper door frame (horizontal building material) 11, the lower door frame (horizontal building material) 12, and the left and right vertical door frames (vertical building materials) 13 on all four sides. The upper door frame 11, the lower door frame 12, and the left and right vertical door frames 13 are extruded shapes formed from metal such as aluminum alloy, and each is configured so that the entire length along the longitudinal direction has a substantially uniform cross-sectional shape. In this embodiment, the upper door frame 11, the lower door frame 12, and the vertical door frame 13 are exemplified, each of which is integrally formed with an outer peripheral portion 11a, 12a, 13a that is hollow and has a substantially rectangular cross section, and an inner peripheral portion 11b, 12b, 13b that is configured so that the dimension along the front direction is larger than that of the outer peripheral portion 11a, 12a, 13a. The outer peripheral portions 11a, 12a, 13a and the inner peripheral portions 11b, 12b, 13b are configured so that their visible surfaces facing the interior of the room are positioned on approximately the same plane. The inner peripheral portion 13b of the vertical door frame 13 has a partition wall portion 14 on its inner visible surface. The partition wall portion 14 is a thin plate that protrudes inward from a position that bisects the inner peripheral portion 13b of the vertical door frame 13 in the visible direction. In the figure, the reference number 7 is a door handle provided on one of the vertical door frames 13. The reference number 8 is a screen door provided on the exterior side of the room.

The two shoji screens 20A and 20B are each constructed by attaching an upper frame 22, a lower frame 23, and left and right vertical frames 24 to the four periphery of a rectangular double-glazed glass 21. The upper frame 22, the lower frame 23, and the left and right vertical frames 24 are extruded shapes formed from a metal such as an aluminum alloy, and each is constructed so that the entire length of the longitudinal portion has a substantially uniform cross-sectional shape. One of the shoji screens (hereinafter, referred to as the inner shoji screen 20A when distinguishing between them) is arranged inside the frame body 10 in a portion that is closer to the room than the partition wall portion 14 so that it can move up and down. The other shoji screen (hereinafter, referred to as the outer shoji screen 20B when distinguishing between them) is arranged inside the frame body 10 in a portion that is closer to the room than the partition wall portion 14 so that it can move up and down. In this embodiment, when the inner screen 20A is placed at the bottom and the outer screen 20B is placed at the top, the bottom frame 23 of the outer screen 20B and the top frame 22 of the inner screen 20A are arranged side by side in the front direction, and the dimensions of the screens 20A and 20B are set so that the opening of the frame body 10 can be blocked. Although not shown in the figure, the inner screen 20A and the outer screen 20B are connected at the lower ends of the vertical frames 24 by a rope-like body 25 such as a wire. The rope-like body 25 individually connects the left vertical frame 24 of the inner screen 20A to the left vertical frame 24 of the outer screen 20B, and the right vertical frame 24 of the inner screen 20A to the right vertical frame 24 of the outer screen 20B, and the middle part of each is wrapped around a pulley 30 provided on the vertical door frame 13.

As shown in Figs. 6 to 9, the pulley 30 is rotatably supported on the base 32 via a support shaft 31, and is attached to the inner peripheral surface of the vertical door frame 13 via the base 32. The outer peripheral surface of the pulley 30 is provided with a guide groove 30a around which the rope 25 is wound. The base 32 is integrally formed with a base body 32a having a rectangular outer shape, a protruding plate portion (protruding portion) 32b bent at a right angle from one end of the base body 32a, and two regulating plate portions 32c bent from both side edges of one end of the base body 32a in the same direction as the protruding plate portion 32b. The base body 32a is provided with a truncated cone-shaped shaft support portion 32d protruding in the same direction as the protruding plate portion 32b at the approximate center, and the support shaft 31 is disposed in the center of the shaft support portion 32d. The longitudinal dimension of the base body 32a is set to be larger than the outer diameter of the pulley 30, while the transverse dimension of the base body 32a is smaller than the outer diameter of the pulley 30. In the portion of the base body 32a that is more outer than the pulley 30, screw insertion holes 32e are provided at four positions on a circumference centered on the support shaft 31. The other end of the base body 32a is provided with a fitting groove 32f and a tapered groove 32g. The fitting groove 32f is a rectangular cutout formed to a size that allows the partition wall portion 14 provided on the vertical door frame 13 to fit into, and is formed at positions equidistant from the long sides of the base body 32a. The tapered groove 32g is continuous with the fitting groove 32f on the base end side of the base body 32a from the fitting groove 32f, and gradually expands in width toward the base end of the base body 32a, and opens at the base end edge of the base body 32a. The protruding plate portion 32b is set so that its protruding dimension from the base body 32a is greater than the dimension along the axial direction of the pulley 30, and protrudes beyond the end face of the pulley 30 supported by the support shaft 31. The restricting plate portion 32c is provided so that each tip abuts against the peripheral surface of the pulley 30, and functions to prevent the cord-like body 25 from escaping from the guide groove 30a.

The pulley 30 is attached to the visible surface of the vertical door frame 13 via the base body 32a with the peripheral surface of the pulley 30 exposed to the outside and inside of the partition wall 14 through the communication hole 14a provided in the partition wall 14 of the vertical door frame 13. More specifically, the communication hole 14a of the partition wall 14 is rectangular and is formed with a dimension that allows the base 32 with the pulley 30 attached to be inserted from the side. The dimension from the visible surface of the vertical door frame 13 to the inner peripheral wall surface 14a1 facing the visible surface of the vertical door frame 13 at the communication hole 14a is set slightly larger than the dimension from the back surface of the base body 32a to the protruding end surface of the protruding plate portion 32b in the base 32. To place the base 32 in the communication hole 14a, for example, the base 32 is tilted and the partition wall portion 14 is inserted between the tapered grooves 32g, and then the base 32 is rotated so that its posture is vertical while fitting the partition wall portion 14 into the fitting groove 32f. After the partition wall portion 14 is fitted into the fitting groove 32f, the mounting screw 33 is screwed into the vertical door frame 13 through the screw insertion hole 32e that is located on the interior side of the base body 32a relative to the partition wall portion 14. The position where the pulley 30 is attached is approximately halfway between the lower frame 23 of the outer door frame 20B and the upper frame 22 of the inner door frame 20A, which are arranged side by side when the inner door frame 20A and the outer door frame 20B are closed. The dimensions of the rope 25 wound around the pulley 30 are set so that when the inner and outer screens 20A and 20B are closed, it extends upward from the vertical frame 24 of the inner screen 20A, then turns around at the pulley 30 and extends downward, connecting without slack to the vertical frame 24 of the outer screen 20B.

In the door panel 6 configured as described above, when the inner screen 20A and the outer screen 20B are moved upward from a closed state, the pulley 30 rotates, decreasing the length of the rope-like body 25 located on the inside of the room from the partition wall portion 14, while increasing the length of the rope-like body 25 located on the outside of the room from the partition wall portion 14, and the outer screen 20B moves downward. As a result, the upper and lower parts of the frame body 10 are opened, so that ventilation of the room can be performed even when the door panel 6 is closed against the door frame body 4. When the inner screen 20A is moved downward from this state, the pulley 30 rotates, increasing the length of the rope-like body 25 located on the inside of the room from the partition wall portion 14, while decreasing the length of the rope-like body 25 located on the outside of the room from the partition wall portion 14, and the outer screen 20B moves upward, returning the frame body 10 to the closed state.

During this period, in the door panel 6 described above, an external force is repeatedly applied to the pulley 30 through the cord-like body 25, and there is a concern that the mounting screw 33 screwed between the base 32 and the vertical door frame 13 may loosen. However, in this door panel 6, the partition wall portion 14 of the vertical door frame 13 is fitted into the fitting groove 32f provided at the lower end of the base 32, and the movement of the base 32 along the projection direction relative to the vertical door frame 13 is restricted. In addition, the protruding plate portion 32b of the base 32 arranged in the communication hole 14a is arranged in a state where the protruding end face is located close to the inner wall surface 14a1 facing the projection surface of the vertical door frame 13 in the communication hole 14a. Therefore, the movement of the base 32 in the direction away from the vertical door frame 13 is restricted. As a result, even if the mounting screw 33 loosens, the movement of the base 32 relative to the vertical door frame 13 can be restricted, making it possible to prevent malfunction of the shoji screens 20A and 20B. Furthermore, the mounting screws 33 are provided only on the part that is on the inside of the room from the partition wall part 14. This reduces the amount of work required to screw in the mounting screws 33, making it easier to attach the pulley 30 to the vertical door frame 13. In addition, since the mounting screws 33 are not screwed into the part that is on the outside of the room from the partition wall part 14, even if the vertical door frame 13 is one in which the inner peripheral parts 11b, 12b, 13b where the shoji screens 20A, 20B are provided and the outer peripheral parts 11a, 12a, 13a have the same visible surface facing the room, the shafts of the mounting screws 33 will not be exposed to the outside of the frame body 10.

In the above embodiment, the fittings are used as a door panel for the entrance door, but they do not necessarily have to be door panels for the entrance door. In addition, the base 32 supporting the pulley 30 has four screw insertion holes 32e and tapered grooves 32g formed symmetrically on the left and right, so that the same base can be used for the right and left vertical door frames 13, reducing the number of parts. However, the present invention is not necessarily limited to this, and the screw insertion holes 32e may be provided only on one side of the partition wall portion 14, and the tapered grooves 32g may be formed so that only one side is inclined. Furthermore, the protruding plate portion 32b is exemplified as the protruding portion, but it does not necessarily have to be plate-shaped, and other shapes may be used as long as they are arranged close to the inner wall surface of the insertion hole when attached to the vertical building material.

As described above, the fitting of the present invention is a fitting in which an indoor shoji screen and an outdoor shoji screen are arranged in a frame composed of left and right vertical building materials and upper and lower horizontal building materials so that they can move up and down, a pulley is rotatably attached to the vertical building materials, and a rope-like body connecting the shoji screens is wrapped around the pulley, so that the shoji screens can be connected upside down, and the vertical building materials are provided with a partition wall section between the indoor shoji screen and the outdoor shoji screen, and the partition wall section is provided with a communication hole at the position where the pulley is to be attached, the pulley is rotatably supported on a base via a support shaft, the base is attached to the visible surface of the vertical building materials while passing through the communication hole of the partition wall section, and the base is provided with a fitting groove in the lower part into which the partition wall section fits, and a protrusion is provided in the upper part to be fitted between the visible surface of the vertical building material and the inner wall surface of the communication hole.
According to this invention, the fitting groove of the base fits into the partition wall portion to limit the movement of the base in the forward direction relative to the vertical building material, and the protrusion of the base abuts against the inner wall surface of the communication hole to limit the movement of the base in the direction away from the vertical building material. Therefore, for example, since the movement of the base relative to the vertical building material can be limited without increasing the number of mounting screws, it is possible to prevent malfunction of the shoji screen without complicating the installation work.

The present invention is also characterized in that, in the above-mentioned fitting, the fitting groove has a constant width that fits into the partition wall portion, and the lower end portion is continuous with a tapered groove whose width gradually increases downward.
According to this invention, since the fitting groove is positioned relative to the partition wall portion by the tapered groove, the operation of fitting the fitting groove to the partition wall portion can be facilitated.

The present invention is also characterized in that, in the above-mentioned building fixture, the base has a screw insertion hole in a portion that is more outer than the pulley, and is attached by screwing a mounting screw into the vertical building material through the screw insertion hole.
According to this invention, the mounting screws can be screwed into the frame from the inner peripheral side with the pulley attached to the base in advance, which makes it possible to facilitate the mounting work.

Furthermore, the present invention is characterized in that, in the above-mentioned fittings, the dimension of the frame along the projecting direction is smaller at the outer periphery than at the part where the shoji screen is installed, and the vertical building material has a visible surface facing the room at the part where the shoji screen is installed and at the outer periphery, which are positioned on the same plane, and the mounting screws are screwed into only the part of the base that is located inside the room relative to the partition wall portion.
According to this invention, the mounting screw is screwed only into the part located inside the room rather than the partition wall part, so that even if the facing surface of the frame body facing the room is located on the same plane, there is no risk of the shank of the screwed mounting screw being exposed to the outside of the frame body.

6 Door panel, 10 Frame, 11 Upper door frame, 12 Lower door frame, 13 Vertical door frame, 11a, 12a, 13a Outer periphery, 11b, 12b, 13b Inner periphery, 14 Partition wall, 14a Communication hole, 14a1 Inner wall surface, 20A, 20B Shoji, 25 Cable-like body, 30 Pulley, 31 Support shaft, 32 Base, 32b Protruding plate, 32e Screw insertion hole, 32f Fitting groove, 32g Tapered groove, 33 Mounting screw

Claims (4)

A frame body made of left and right vertical building materials and top and bottom horizontal building materials is provided with a door on the inside of the room and a door on the outside of the room that can be moved up and down. A pulley is rotatably attached to the vertical building materials, and a rope-like body that connects the doors is wound around the pulley, so that the doors can be turned upside down and linked together.
A partition wall portion is provided between the indoor shoji screen and the outdoor shoji screen on the vertical building material, and a communication hole is provided in the partition wall portion at a position where the pulley is attached,
The pulley is rotatably supported on a base via a support shaft, and the base is attached to the visible surface of the vertical building material in a state where the pulley passes through the communication hole of the partition wall portion;
This fitting is characterized in that the base has a fitting groove in its lower portion into which the partition wall portion fits, and a protrusion in its upper portion that is fitted between the visible surface of the vertical building material and the inner wall surface of the communicating hole. The fitting according to claim 1, characterized in that the fitting groove has a constant width that fits into the partition wall portion, and the lower end portion is continuous with a tapered groove whose width gradually increases downward. The fixture according to claim 1, characterized in that the base has a screw insertion hole in a portion that is more outer than the pulley, and is attached by screwing a mounting screw into the vertical building material through the screw insertion hole. The dimension of the frame body along the projection direction is configured so that the outer periphery is smaller than the part where the shoji screen is installed, and the vertical building material is configured so that the visible surfaces facing the room at the part where the shoji screen is installed and the outer periphery are located on the same plane,
The fixture according to claim 3, characterized in that the mounting screw is screwed into only a portion of the base that is located on the indoor side of the partition wall portion.

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