JP7638128B2 - Door frame - Google Patents

Description

The present invention relates to a door frame that supports a door so that it can be opened and closed via hinges, and in particular to the vertical frame on the door rotation axis side.

A door frame that supports a door so that it can be opened and closed via hinges is known, for example from Patent Document 1 below. The door frame is configured as a four-sided frame consisting of an upper frame, a lower frame, and left and right vertical frames that are fixed to the inner surface of the opening where the door is to be installed, a three-sided frame consisting of an upper frame and left and right vertical frames, or a two-sided frame consisting of only left and right vertical frames, and pivot hinge vertical frame side fittings having pivot shafts or pivot bearing holes are provided at the upper and lower ends of the vertical frame on the door rotation axis side, and pivot hinge door side fittings having pivot bearing holes or pivot shafts are provided at the upper and lower ends of the door rotation axis side, and the door is rotatably supported on the vertical frame on the rotation axis side with the pivot shaft inserted into the pivot bearing hole as the rotation axis.

For interior doors in ordinary homes, wooden materials are often used for the door frames as well, to ensure design consistency with doors that are primarily made of wood materials.

JP 2006-138160 A

However, when the door frame is made of wood, the vertical frame on the door pivot side, where the door load is applied via the hinge, must have a large (thick) visible width to ensure its strength, which creates the problem of poor appearance. Also, when a door stop groove for fitting and fixing a door stopper is provided in the vertical frame, the visible width of the vertical frame is reduced by the depth of the door stop groove, reducing its strength and making the vertical frame more susceptible to deformation or damage due to the door load.

Therefore, the problem that this invention aims to solve is to provide a door frame with a vertical frame on the door rotation axis side that has sufficient strength to not deform or break even when subjected to the load of the door, while having a small visible width and a good appearance.

In order to solve this problem, the invention of claim 1 of the present application is a door frame that supports a door so that it can be opened and closed with a hinge, wherein at least the axis side vertical frame on the door rotation axis side comprises a frame main body that is fixed to an opening of the main body, and an adjustment member that is fixed to the frame main body at any position that is movable in the width direction relative to the frame main body, and is characterized in that the hinge is attached to one width side of the frame main body, and an adjustment member mounting piece is formed approximately parallel to the frame main body surface via a connecting piece on the other width side of the frame main body, and there is an adjustment member accommodating groove between the frame main body surface and the adjustment member mounting piece that movably accommodates the adjustment member.

The invention of claim 2 of this application is characterized in that in the door frame described in claim 1, the hinge is a pivot hinge and is attached to the upper and lower ends of the frame body.

The invention according to claim 3 of the present application is characterized in that in the door frame according to claim 1 or 2, the adjustment member accommodating groove is formed at the end of the frame body on the other side in the width direction.

The invention of claim 4 of the present application is characterized in that, in the door frame described in claim 1 or 2 , the adjustment member has an inner portion of width Wa and an outer portion of width Wb (>Wa), and the inner portion is accommodated in the adjustment member accommodating groove .

The invention according to claim 5 of the present application is characterized in that, in the door frame according to claim 4, the tip of the adjustment member mounting piece is capable of engaging with a step between the inner and outer parts of the adjustment member .

The invention according to claim 6 of the present application is characterized in that in the door frame according to claim 1 or 2 , the frame body is a hollow molded product made of metal, and the adjustment member is made of a wood material .

According to the present invention, the vertical frame on the door rotation axis side of the door frame is composed of two members: a frame body fixed to the opening of the main body, and an adjustment member fixed to the frame body at any position that can move widthwise relative to the frame body. Therefore, for example, the frame body can be made of metal such as aluminum, and has the strength to not deform or break even when subjected to the load of the door via the hinge, and the adjustment member can be made of a wood material to give it a wood-like texture, and when other members related to the door frame (such as the vertical frame on the opening side and the upper frame) are made of wood material, a unified design can be given, achieving both strength and appearance. Making the frame body a hollow molded product to reduce its weight also has the effect of making it easier to handle and install.

Furthermore, by configuring as described above, a door frame is formed that is strong enough to support the weight of the door through the hinges, and the frame body can be made thinner. This allows the adjustment members that are not directly affected by the weight of the door to also be made thinner, resulting in a vertical frame with a smaller visible width compared to conventional vertical frames that are made entirely from a single member made of wood material, resulting in a better appearance.

1 is a front view of a door frame and a door (closed state) according to an embodiment of the present invention (Example 1) as viewed from one side of a space partitioned by the door (the front side of the door in FIG. 1 ). For convenience of illustration, members that are not directly related to the present invention, such as a handle for opening and closing the door, a latch, and a latch receiver, are not shown. In the embodiment shown in FIG. 1, the door frame and the door (closed state) are viewed from the other side of the space defined by the door (the opposite side of the door in FIG. 1). For convenience of illustration, members that are not directly related to the present invention, such as a handle, a latch, and a latch receiver for opening and closing the door, are omitted from the illustration. FIG. 2 is an enlarged view of parts A1 and A2 in FIG. 3 is an enlarged view of the parts B1 and B2 in FIG. 2 (the parts A1 and A2 in FIG. 1, respectively, viewed from the opposite side of the door in the closed state). 2 is a cross-sectional view taken along line XX in FIG. 1 (hatching omitted). This is a plan view showing the installation state of the axis-side vertical frame at the lower end (door omitted). 4 is a cross-sectional view (without hatching) taken along line YY in FIG. 3. 1 is a plan view showing only the frame body of the two members constituting the shaft-side vertical frame, with a decorative sheet that is optionally attached to all or part of the surface of the frame body omitted from the illustration. 1 is a plan view showing the adjustment member alone, one of the two members constituting the shaft-side vertical frame, with a decorative sheet that is optionally attached to all or part of the surface of the adjustment member omitted in the drawing. 6 is a cross-sectional view similar to FIG. 5 (hatching omitted), showing a door frame and a door (closed state) according to another embodiment (Example 2) of the present invention.

The present invention will be described in detail below with reference to examples.

A door frame according to one embodiment of the present invention (Example 1) will be described with reference to Figures 1 to 9. The door frame 10 in this example is configured as a three-sided frame consisting of an upper frame 11 and left and right vertical frames 20, 40, and is fixed by nailing or the like to the inner side facing the opening 2 of a body 1 such as a wall. A door 70 is provided in the door frame 10 so as to be able to open and close via pivot hinges (pivot hinge vertical frame side fittings 50A, 50B and pivot hinge door side fittings 60A, 60B) described below. The vertical frame 20 is a vertical frame erected on the rotation axis side of the door 70 (hereinafter referred to as the "axis side vertical frame"), and the vertical frame 40 is a vertical frame erected on the opening and closing end side of the door 70 (hereinafter referred to as the "open side vertical frame").

The axis-side vertical frame 20 is a long body having the total height of the opening 2, i.e., the length dimension from the floor surface 4 to the underside of the upper frame 11, and in this embodiment, it is composed of two members: a frame main body 21 fixed to the main body 1 with a frame fixing screw 23, and an adjustment member 22 fixed with an adjustment member fixing screw 24 at any position that can be moved in the width direction or wall thickness direction relative to the frame main body 21 (vertical direction on the paper in Figures 1 and 2, up and down on the paper in Figures 5 and 6).

The frame body 21 is fixed to the frame 1 with frame fixing screws 23, and pivot hinge vertical frame side fittings 50A, 50B are fixed to the upper and lower ends of one widthwise side (the front side of the door 70) of the front surface 21a with hinge fixing screws 25, 25. A back groove 26 is recessed in the area on the back surface 21b side of the frame body 21 through which the hinge fixing screws 25, 25 are inserted, and the pivot hinge vertical frame side fittings 50A, 50B are fixed to the upper and lower ends of the frame body 21, respectively, by passing the hinge fixing screws 25, 25 through the screw insertion holes 27 from the front surface 21a side of the frame body 21 and screwing them into the female threads (not shown) of the back plate 28 fitted into the back groove 26. The material of the frame body 21 is not particularly limited, but it can be made of metal such as aluminum or hard plastic, which has the strength to withstand the load of the door 70 without deformation or damage, the lightness that makes it easy to handle and install, and the ease of processing that allows it to be easily processed into a desired shape. The frame body 21 in this embodiment is an aluminum hollow molded product with a hollow portion 29.

The adjustment member 22 can be made of any material, but in this embodiment, it is a long piece of MDF that has been processed to have an inner portion 221 with a thickness Ta and width Wa, and an outer portion 222 with a thickness Tb (>Ta) and width Wb. The back surface 22b of the adjustment member 22 is formed as a flat surface throughout, so that a step 223 is formed on the front surface between the inner portion 221 and the outer portion 222 due to the difference in thickness (Tb-Ta). In this embodiment, an example of the dimensions of the adjustment member 22 is Ta = 9.0 mm, Tb = 12.0 mm, Wa = 22.5 mm, and Wb = 20.7 mm.

The other widthwise side (opposite side to the door 70) of the surface 21a of the frame body 21 is formed with an adjustment member mounting piece 31 that provides an adjustment member accommodation groove 30 between the surface 21a of the frame body and the adjustment member mounting piece 31, which accommodates the inner part 221 of the adjustment member 22 so that it can move in the widthwise direction. The depth D of the adjustment member accommodation groove 30 is formed to be approximately the same as or slightly larger than the width Wa of the inner part 221 of the adjustment member 22, and the width E of the opening end (the distance between the tip of the adjustment member mounting piece 31 and the surface 21a of the frame body) is formed to be approximately the same as or slightly smaller than the thickness Ta of the inner part 221 of the adjustment member 22. In this embodiment, as an example of the dimensions of the frame body 21, D = 25.0 mm, E = 9.0 mm. The connecting piece 32 that connects the adjustment member mounting piece 31 to the frame body 21 also serves as a door stop.

The pivot hinge vertical frame side fitting 50A on the lower end side is integrally formed with an attachment piece 51 that abuts against the frame body surface 21a and is fixed to the frame body 21 with pivot hinge fixing screws 25, 25, and a horizontal piece 52 that extends approximately perpendicular to the attachment piece 51 (approximately horizontal when installed), and a pivot shaft 53 protrudes vertically from the tip of the horizontal piece 52 with a specified protruding length.

Pivot hinge door side fittings 60A, 60B are attached to the upper and lower ends of the door 70 on the axis side vertical frame 20 side. The lower end pivot hinge door side fitting 60A consists of an attachment piece 61 that is inserted into a recess 71 formed by cutting out a part of the lower end of the door 70 on the axis side vertical frame 20 side, and a protruding piece 62 that protrudes from the attachment piece 61 to one side (the front side) of the door 70, and a pivot bearing hole 63 that rotatably accommodates the pivot shaft 53 of the pivot hinge vertical frame side fitting 50A is formed on the back surface of the protruding piece 62 with a predetermined depth in the vertical direction. A number of screw holes 64 are formed in the attachment piece 61, and the pivot hinge door side fitting 60A is attached to the door 70 by screwing fixing screws 65 into these screw holes 64.

Figures 5 and 6 show the configuration at the lower end (A1, B1) of the axis side vertical frame 20, but the configuration at the upper end (A2, B2) of the axis side vertical frame 20 is roughly equivalent to the configuration flipped upside down, so a detailed explanation will be omitted. However, at the upper end (A2, B2), the pivot shaft 54 hangs downward with a predetermined protruding length from the horizontal piece 52 of the pivot hinge vertical frame side fitting 50B, and the pivot bearing hole 66 that receives it is formed with a predetermined depth in the protruding piece 62 of the pivot hinge door side fitting 60B (see Figures 3 and 4).

The structure, shape, and material of the open-side vertical frame 40 are not particularly limited, but in this embodiment, it is made of MDF processed into a predetermined shape as shown in Figure 5, and a synthetic resin door stop 41 is provided on the front side. Note that in Figures 5 and 6, the reference numerals 3 and 3 indicate wall materials that are attached to both sides of the framework 1.

The construction procedure for this door frame 10 will be explained.

The inner part 221 of the adjustment member 22 is inserted into the adjustment member accommodation groove 30 between the surface 21a of the frame body 21 and the adjustment member mounting piece 31, and the adjustment member fixing screw 24 is screwed in from the back surface 21b side of the frame body 21 at any depth position to fix the adjustment member 22 to the frame body 21 to form the axis side vertical frame 20. This work may be performed at the construction site, or the axis side vertical frame 20 assembled in advance at a factory may be brought to the construction site. The fixing position of the adjustment member 22 is set to a position sufficient to hide the end of the wall material 3 with the outer part 222, and the position is adjusted according to the thickness of the structure 1 and the wall material 3. In order to accommodate cases where the thickness of the structure 1 and the wall material 3 differs greatly, multiple types of adjustment members 22 with different sizes (especially the width Wb of the outer part 222) may be prepared and selected from them according to the thickness of the structure 1 and the wall material 3.

The axis-side vertical frame 20 thus formed is combined with a separately prepared upper frame 11 and an open-side vertical frame 40 to form a three-sided door frame 10. In the case of a four-sided frame, a lower frame is also combined to form a four-sided door frame 10. In the case of a two-sided frame consisting of only the axis-side vertical frame 20 and the open-side vertical frame 40, this work step is not necessary. The work of forming the door frame 10 as a three-sided or four-sided frame can also be performed on-site, or the door frame 10 can be pre-assembled in a factory and brought to the construction site.

The door frame 10 assembled in this manner is then installed in the opening 2 at the construction site using frame fixing screws 23 and fixed to the main body 1.

The pivot hinge vertical frame side fittings 50A, 50B are fixed to the upper and lower ends of the axis side vertical frame 20 with pivot hinge fixing screws 25, 25, respectively. This work may be performed before or after assembling the door frame 10 at the construction site, or after the door frame 10 is fixed to the opening 2, or the axis side vertical frame 20 with the pivot hinge vertical frame side fittings 50A, 50B attached in advance at a factory may be transported to the construction site.

Then, the pivot hinge door side fittings 60A, 60B attached to the upper and lower ends of the door 70 are respectively assembled to the pivot hinge vertical frame side fittings 50A, 50B attached to the upper and lower ends of the axis side vertical frame 20, thereby installing the door 70 on the axis side vertical frame 20 so that it can be opened and closed. Specifically, this operation can be performed by lifting the door 70 at a slight angle, inserting the pivot shaft 53 of the pivot hinge vertical frame side fitting 50B attached to the upper end of the axis side vertical frame 20 into the pivot bearing hole 66 of the pivot hinge door side fitting 60B attached to the upper end of the door 70, lifting it until the upper end of the door 70 almost abuts the lower surface of the upper frame 11, and then, while maintaining this position, bringing the lower end of the door 70 closer to the axis side vertical frame 20 until it is almost vertical, inserting the pivot shaft 53 that stands perpendicular from the pivot hinge vertical frame side fitting 50A attached to the lower end of the axis side vertical frame 20 into the pivot bearing hole 63 of the pivot hinge door side fitting 60A attached to the lower end, and then releasing the door 70.

In order to make it possible to install the door 70 using this procedure, the protruding length of the pivot shafts 53, 54 in the pivot hinge vertical frame side fittings 50A, 50B and the depth of the pivot bearing holes 63, 66 in the pivot hinge door side fittings 60A, 60B are such that when the door 70 is lifted and the pivot shaft 53 of the pivot hinge vertical frame side fitting 50B is inserted deep into the pivot bearing hole 63 of the pivot hinge door side fitting 60B, the lower end of the door 70 is inserted into the pivot hinge vertical frame side fitting 50B. It is slightly above the tip of the pivot shaft 53 of the pivot hinge vertical frame side fitting 50A and is in a position where it does not interfere, and when the pivot shaft 53 of the pivot hinge vertical frame side fitting 50A is then inserted into the pivot bearing hole 63 of the pivot hinge door side fitting 60A and the door 70 is dropped under its own weight, at least the tip of the pivot shaft 54 of the pivot hinge vertical frame side fitting 50B enters the pivot bearing hole 66 of the pivot hinge door side fitting 60B and is set to a dimension such that it does not fall out.

Alternatively, to make it easier to install the door 70, the pivot shaft 54 of the pivot hinge vertical frame side fitting 50B may be made vertically movable and may be configured to protrude downward from the pivot hinge vertical frame side fitting 50B by spring bias. When such a configuration is adopted, the door 70 is first tilted and the pivot shaft 53 perpendicular to the pivot hinge vertical frame side fitting 50A is inserted into the pivot bearing hole 63 of the pivot hinge door side fitting 60A, and then the pivot shaft 54 of the pivot hinge vertical frame side fitting 50B is moved upward against the spring bias, and the upper end of the door 70 is brought closer to the shaft side vertical frame 20. When the pivot shaft 54 is aligned with the pivot bearing hole 66 of the pivot hinge door side fitting 60B, the pivot shaft 54 automatically protrudes due to the spring bias and fits into the pivot bearing hole 66. When the pivot shaft 53 of the pivot hinge vertical frame side fitting 50A is inserted into the pivot bearing hole 63 of the pivot hinge door side fitting 60A at the bottom end of the door 70, the door 70 can be made to stand on its own. After that, the installation work is completed by simply moving the upper end of the door 70 closer to the vertical frame side 20, so the work can be done easily without bearing the full weight of the door 70.

Instead, for example, a rotatable stopper mechanism can be provided on the pivot hinge door side fitting 60B, the pivot shaft insertion passage provided in the stopper can be positioned to open toward the open side vertical frame 40, the pivot shaft 54 of the pivot hinge vertical frame side fitting 50B can be inserted into this pivot shaft insertion passage and fitted into the pivot bearing hole 66 of the pivot hinge door side fitting 60B, and then the stopper can be rotated to close the pivot shaft insertion passage, which can facilitate the door installation work in the same way as described above.

As mentioned above, the adjustment member 22 in this embodiment is formed with a relatively thin inner portion 221 and a relatively thick outer portion 222, and can move in the width direction with the inner portion 221 fitted into the adjustment member accommodation groove 30 between the adjustment member mounting piece 31 and the frame body surface 21a. However, by making the step portion 223 between the inner portion 221 and the outer portion 222 engage with the tip of the adjustment member mounting piece 31 (FIGS. 5 and 6), the adjustment member 22 can be stably positioned relative to the frame body 21 while being fixed by the adjustment member fixing screw 24. Therefore, it is preferable to use an adjustment member 22 with an outer portion 222 of width Wb that can hide the end of the wall material 3 even in such a positional relationship.

A door frame according to another embodiment (Example 2) of the present invention will be described with reference to FIG. 10. In this example, the door frame 80 is configured as a three-sided frame consisting of an upper frame 11 and left and right vertical frames 90, 40, and is fixed by nailing or the like to the inner side facing the opening 2 of a body 1 such as a wall. A door 70 is installed in the door frame 80 so as to be able to open and close via a pivot hinge (pivot hinge vertical frame side fittings 50A, 50B and pivot hinge door side fittings 60A, 60B). The vertical frame 90 is a vertical frame erected on the rotation axis side of the door 70 (hereinafter referred to as the "axis side vertical frame"), and the vertical frame 40 is a vertical frame erected on the opening and closing end side of the door 70 (hereinafter referred to as the "open side vertical frame").

In this embodiment, the configuration of the shaft side vertical frame 90 is different from that of the shaft side vertical frame 20 in embodiment 1. The other components are the same as in embodiment 1, so the same reference numerals are used and the explanation is omitted. In addition, the construction procedure for this door frame 80 can be performed in the same way as for the door frame 10 in embodiment 1, so the explanation is omitted.

The shaft-side vertical frame 90 in this embodiment is a long body having the total height of the opening 2, i.e., the length dimension from the floor surface 3 to the underside of the upper frame 11, and is composed of two members: a frame body 91 fixed to the main body 1 with a frame fixing screw 93, and an adjustment member 92 fixed with an adjustment member fixing screw 94 at any position movable in the width direction or wall thickness direction (up and down on the paper surface of Figure 10) relative to the frame body 91. As an example, the frame body 91 is a one-piece molded aluminum product, and the adjustment member 92 is MDF.

The frame body 91 in this embodiment has substantially the same shape as the frame body 21 in the first embodiment, but the adjustment member attachment piece 31 and the connecting piece 32 provided on the frame body 21 in the first embodiment are omitted. Instead, an adjustment member accommodation groove 96 is formed between the front plate 91a and the back plate 91b of the frame body 91, which opens to one side in the width direction (the side opposite to the pivot hinge vertical frame side fittings 50A, 50B), and a flat adjustment member 92 having a substantially constant thickness is inserted into this adjustment member accommodation groove 96 to an arbitrary depth position and fixed to the frame body 91 by an adjustment member fixing screw 94. A door stop plate 97 protruding toward the opening 2 is attached to the front plate 91a. Reference numeral 95 denotes a pivot hinge fixing screw for fixing the pivot hinge vertical frame side fittings 50A, 50B to the upper and lower ends of the shaft side vertical frame 90, and is the same as the pivot hinge fixing screw 25 in the first embodiment. Reference numeral 98 denotes a back plate for screwing in the pivot hinge fixing screw 95, and is the same as the back plate 25 in Example 1.

Although several embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to these, and can be implemented with a wide variety of modifications and alterations within the scope of the invention defined by the claims.

In the illustrated embodiment, the vertical frame structure consisting of two components, the frame body 21, 91 and the adjustment member 22, 92, is used only for the axis side vertical frames 20, 90, and the open side vertical frame 40 is made of a single MDF member, but from the standpoint of uniformity of appearance, the open side vertical frame 40 may also be made of two components, the frame body and the adjustment member.

As mentioned above, the door frame may be a three-sided frame consisting of an upper frame, an axis-side vertical frame, and an open-side vertical frame as in the illustrated embodiment, or a four-sided frame consisting of an upper frame, a lower frame, an axis-side vertical frame, and an open-side vertical frame, or a two-sided frame consisting of only an axis-side vertical frame and an open-side vertical frame.

In addition, in the illustrated embodiment, the frame body 21, 91 is hollow to reduce weight, but it may be solid or flat.

In addition, in the illustrated embodiment, screws are used to fasten each part, but the fastening means is optional, and adhesives, etc. may also be used for fastening.

In addition, in the illustrated embodiment, a pivot hinge is used as the hinge that supports the door on the vertical frame so that it can be opened and closed, but the present invention can also be applied to door frames that use other types of hinges.

1 Body 2 Opening 3 Wall material 4 Floor surface 10 Door frame (Example 1)
11 Upper frame 20 Axle side vertical frame 21 Frame body 22 Adjustment member 221 Inner part 222 Outer part 223 Step part 23 Frame fixing screw 24 Adjustment member fixing screw 25 Pivot hinge fixing screw 26 Back groove 27 Screw insertion hole 28 Back plate 29 Hollow part 30 Adjustment member accommodating groove 31 Adjustment member mounting piece 32 Connection piece 40 Open side vertical frame 41 Door stop 50A, 50B Pivot hinge vertical frame side fitting 51 Mounting piece 52 Horizontal piece 53 Pivot shaft 54 Pivot shaft 60A, 60B Pivot hinge door side fitting 61 Mounting piece 62 Protruding piece 63 Pivot bearing hole 64 Screw hole 65 Fixing screw 66 Pivot bearing hole 70 Door 80 Door frame (Example 2)
90 Axle side vertical frame 91 Frame body 92 Adjustment member 93 Frame fixing screw 94 Adjustment member fixing screw 95 Pivot hinge fixing screw 96 Adjustment member accommodation groove 97 Door stop plate 98 Back plate

Claims (6)

In a door frame that supports a door so that it can be opened and closed with a hinge, at least the axis side vertical frame on the door rotation axis side comprises a frame main body that is fixed to an opening in the main body, and an adjustment member that is fixed to the frame main body at any position that can move in the width direction relative to the frame main body, the hinge is attached to one width side of the frame main body , and an adjustment member mounting piece is formed on the other width side of the frame main body via a connecting piece and approximately parallel to the frame main body surface, and an adjustment member accommodating groove is provided between the frame main body surface and the adjustment member mounting piece to movably accommodate the adjustment member. The door frame of claim 1, characterized in that the hinge is a pivot hinge and is attached to the upper and lower ends of the frame body. The door frame according to claim 1 or 2, characterized in that the adjustment member accommodating groove is formed at the end of the other widthwise side of the frame body. 3. The door frame according to claim 1 , wherein the adjustment member has an inner portion having a width Wa and an outer portion having a width Wb (>Wa), the inner portion being received in the adjustment member receiving groove . 5. The door frame according to claim 4, wherein a tip of said adjustment member attachment piece is engageable with a step between the inner side and the outer side of said adjustment member . 3. The door frame according to claim 1 , wherein the frame body is a hollow molded product made of metal, and the adjustment member is made of a wood material .