JP7117038B1 - door mechanism - Google Patents

Abstract

A door structure capable of preventing a rotating shaft from descending is provided. A door mechanism includes a door frame, a door body (3), and a rotating mechanism (5) that rotatably connects the door frame and the door body (3). The frame member 31 of the door 3 has a frame inclined portion 31b extending obliquely with respect to the thickness direction of the door 3 . The rotating mechanism 5 includes a bracket 6 fixed to the frame inclined portion 31b, a rotating shaft 7 inserted through the bracket 6, and a bearing installed on the upper frame of the door frame. When the rotary shaft 7 is positioned at the upper end position, the upper end portion of the rotary shaft 7 is positioned within the bearing, the door body 3 is rotatably connected to the upper frame, and when the rotary shaft 7 is lowered to the lowered position, The upper end portion of the rotary shaft 7 is removed from the bearing, and the connection of the door 3 to the upper frame is released. When the rotating shaft 7 abuts on the screw N3 screwed or inserted into the frame inclined portion 31b, the rotating shaft 7 is prevented from descending to the lowered position. [Selection drawing] Fig. 5

Description

The present invention relates to a door mechanism comprising a hinged door.

2. Description of the Related Art Conventionally, as a structure of a hinged door, it is known that the door body can be opened and closed by inserting the upper end portion of a rotating shaft attached to the door body into a bearing provided on the door upper frame. When removing the door body from the door upper frame, the rotating shaft is lowered to remove it from the bearing. In the door apparatus disclosed in Patent Document 1, a mounting piece is provided on a bracket that supports the rotating shaft, and a screw that is screwed into the mounting piece prevents the rotating shaft from inadvertently descending.

In such hinged doors, there is a concern that a finger may get caught between the door body and the door frame when the door body is opened and closed, and various door structures have been proposed to prevent such a finger jam accident. there is For example, in Patent Literature 2, a semicircular bulging portion is provided on the hanging side of the door, and the gap between the bulging portion and the stepped portion of the vertical frame is kept constant even when the door is opened and closed. It is configured.

JP 2014-25214 A JP 2013-209881 A

In the configuration disclosed in Patent Document 1, a screw is used to prevent the rotating shaft from descending, but it is necessary to provide the bracket with a mounting piece for screwing the screw. In order to lower the rotating shaft, the rotating shaft must be accessed through the opening provided in the door and pushed down. There is a problem that the mounting piece becomes an obstacle when pushing down the shaft.

In the configuration disclosed in Patent Literature 2, a pair of steel plates having quadrant-shaped protruding portions are butted together to form a semi-arc-shaped bulging portion, and processing the steel plates into an arc shape is time-consuming. There was a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door structure capable of preventing the rotating shaft from descending without providing a mounting piece.

Another object of the present invention is to provide a door structure capable of preventing a finger jam accident with a simpler structure.

A door mechanism according to the present invention includes a door frame having an upper frame, a door body, and a rotating mechanism that rotatably connects the upper frame and the door body, wherein the door body a frame member extending along the height direction of the body, the frame member having a frame inclined portion extending obliquely with respect to the thickness direction of the door body, and the rotation mechanism comprising the frame inclined portion; a bracket fixed to the bracket, a rotating shaft inserted through the bracket, and a bearing installed in the upper frame for supporting the rotating shaft, the rotating shaft being positioned between an upper end position and a lowered position is vertically movably supported by a bracket, and when the rotating shaft is positioned at the upper end position, the upper end portion of the rotating shaft is positioned within the bearing, and the door body is rotatable with respect to the upper frame. When the rotary shaft is connected and the rotary shaft is lowered to the lowered position, the upper end portion of the rotary shaft is disengaged from the bearing, the door body is disconnected from the upper frame, and is screwed or inserted into the frame inclined portion. The abutment of the rotating shaft against the screw prevents the rotating shaft from descending to the lowered position.

A door mechanism according to the present invention includes a door frame and a door body rotatably connected to the door frame about an axis, and the door frames are spaced apart from each other in a predetermined direction. It has a door top side vertical frame and a door bottom side vertical frame that are arranged opposite to each other. a quarter-circular curved portion centered on an axis, and the door bottom-side vertical frame has a side portion and a protrusion extending in the predetermined direction from the side portion toward the door body. The axis is positioned on an extension line of the projection in the predetermined direction, a gap is provided between the projection and the curved portion, and the door body is rotatable about the axis within a predetermined range. and the projecting portion faces the curved portion in the predetermined direction regardless of the rotation angle of the door body within the predetermined range.

According to the door mechanism of the present invention, the rotating mechanism includes the bracket fixed to the frame inclined portion of the frame member and the rotating shaft inserted through the bracket, and rotates by the screw screwed or inserted into the frame inclined portion. The abutment of the shaft prevents the rotating shaft from descending. Therefore, the bracket does not need to have a mounting piece, and the pressing operation of the rotary shaft is not hindered by the mounting piece.

Further, according to the door mechanism of the present invention, the end portion of the door body on the side of the door trailing edge has a curved portion whose cross section is a quarter circle centered on the axis line, and regardless of the rotation angle of the door body within a predetermined range, The protruding portion of the door bottom side vertical frame faces the curved portion. As a result, the gap between the protruding portion and the curved portion is maintained constant regardless of the rotation angle of the door body, thereby preventing a finger jamming accident. In addition, since the door tail side end portion of the door body has an inclined portion extending obliquely with respect to the thickness direction of the door body, compared with the case where the door tail side end portion is formed in a curved shape, the It is possible to reduce the time and effort required to construct the ends.

The front view of the door mechanism which concerns on embodiment of this invention. II-II line sectional drawing of FIG. FIG. 3 is an enlarged view of a main portion of FIG. 2 and is a view for explaining how a door body opens and closes; FIG. 4 is a cross-sectional view of the door body shown in FIG. 3 ; (a) is a plan view of the main part of the door body shown in FIG. 3, and (b) is a diagram showing an upper turning mechanism mounted on the door body, viewed from the direction of arrow Vb shown in FIG. 5 (a). FIG. 3C is a diagram showing a state in which the rotation shaft of the upper rotation mechanism is pushed down to the lowered position; FIG. 6 is a perspective view showing the upper turning mechanism shown in FIG. 5; The figure which looked at the door body from the arrow VII direction shown to Fig.5 (a).

A door mechanism according to an embodiment of the present invention will be described below with reference to the accompanying drawings. 1 and 2, a door mechanism 1 according to the present embodiment includes a door frame 2 and a rotating shaft 7 (FIG. 5) attached to the door frame 2 so as to be rotatable about an axis C. and a door body 3 as a hinged door. The door frame 2 includes a door tip side vertical frame 21, a door trailing side vertical frame 22, and an upper frame 23 and a lower frame 24 connecting the vertical frames 21 and 22 together and extending in the width direction D1. An opening 20 is defined by the frames 21 , 22 , the upper frame 23 and the lower frame 24 . The door 3 is rotatable about the axis C between the fully closed position shown in FIGS. 2 and 3(a) and the fully open position shown in FIG. 3(g). Opening 20 is opened and closed. In this embodiment, the opening/closing angle of the door 3 is set to approximately 90°.

Hereinafter, one side in the thickness direction D2 of the door frame 2, which is the side in which the door body 3 rotates to open, is referred to as the "opening side", and the opposite side to the opening side is referred to as the "closing side".

Referring to FIG. 2, the door tail side vertical frame 22 is formed of a bent plate-like member, and includes a side portion 22a extending in the thickness direction D2 of the door frame 2 and defining the opening 20, and a side portion 22a. and a projecting portion 22b extending in the width direction D1 from 22a toward the door leading edge side vertical frame 21 . The projection 22b is located in the middle of the side surface 22a in the thickness direction D2, and the axis C of the door 3 is located on the extension line of the projection 22b in the width direction D1. The door bottom side vertical frame 22 further has a closed side portion 22c extending in the width direction D1 from the closed side end portion of the side portion 22a toward the door tip side vertical frame 21. The closed side portion 22c is made of resin. is mounted with an airtight material 22d.

As shown in FIG. 4, the door 3 has a leading edge S and an trailing edge B extending along the height direction D3 (FIG. 1) of the door 3. B has an inclined portion B1 extending obliquely and linearly outward in the width direction D1 toward the opening side, and a curved portion B2 having a quarter circle shape centered on the axis C in a cross-sectional view. The curved portion B2 is continuous with the inclined portion B1 and is located on the open side of the inclined portion B1.

Further, the door 3 includes a core 30, frame members 31 and 32 extending along the height direction D3 of the door 3, and surface members 33 and 34 covering the core 30 and the frame members 31 and 32. Prepare. The frame member 31 is positioned closer to the door trailing edge than the core member 30, and has a base portion 31a with a U-shaped cross section that opens outward in the width direction D1, and an inclined portion (frame inclined portion) 31b extending from the base portion 31a. . The frame inclined portion 31b extends obliquely and linearly outward in the width direction D1 from the closed end of the base portion 31a toward the open side. In other words, the frame inclined portion 31b extends obliquely and linearly with respect to the thickness direction D4 of the door 3. As shown in FIG. Here, the thickness direction D4 of the door 3 when the door 3 is closed coincides with the thickness direction D2 of the door frame 2 .

The surface members 33 and 34 are steel plates, and the surface member 33 covers at least the core member 30 from the closed side and also covers the frame inclined portion 31b. The surface material 34 covers at least the core material 30 from the open side and also covers the opening 31c of the frame material 31 in an arc shape. are joined together.

That is, of the door trailing edge portion B of the door 3, the inclined portion B1 is composed of the frame inclined portion 31b and the surface material 33 covering it, and the curved portion B2 is formed by forming the opening 31c of the frame member 31 into a circular cross section. It is constructed by a surface material 34 covering in an arc shape.

As shown in FIG. 3, a gap G is provided between the protrusion 22b of the door trailing edge side vertical frame 22 and the door trailing edge side end portion B of the door body 3. As shown in FIG. As described above, the curved portion B2 of the door 3 extends along the arc centered on the axis C, so regardless of the rotation angle of the door 3, the tip of the protrusion 22b is always curved at the curved portion B2. and in the width direction D1, and the dimension of the gap G is kept constant. In this embodiment, the dimension of the gap G is set to 4.5 mm, and the length dimension (projection length) L of the projection 22b in the width direction D1 is set to 16.5 mm. As a result, it is possible to effectively prevent a finger pinch accident when the door 3 rotates.

As described above, according to the present embodiment, the door tail side end portion B of the door body 3 has a curved portion B2 whose cross section is a quarter circle centered on the axis C, and the door body 3 can be rotated within a predetermined range. Since the protrusion 22b of the door tail-side vertical frame 22 faces the curved portion B2 regardless of the angle, the gap G between the protrusion 22b and the curved portion B2 is maintained constant regardless of the rotation angle of the door 3. , it is possible to prevent finger jam accidents. Further, since the door trailing end B of the door 3 has an inclined portion B1 extending obliquely with respect to the thickness direction D4 of the door 3, the door trailing end B is curved as a whole (that is, half in cross section). As compared with the case of forming in a circular shape, it is possible to reduce labor required for constructing the door tail side end portion B.

5 and 6, the door mechanism 1 further includes an upper rotating mechanism (rotating mechanism) 5 for rotatably connecting the door body 3 to the door frame 2, and a lower rotating mechanism (not shown). And prepare. The upper rotating mechanism 5 includes a bracket 6 attached to the door 3, a rotating shaft 7 supported by the bracket 6 so as to be able to move up and down, and an upper frame 23 to rotatably support the rotating shaft 7. 5(b) and 6 and the lowered position shown in FIG. 5(c).

The bracket 6 includes a horizontal upper plate 61 , a horizontal lower plate 62 , and vertical side plates 63 connecting the upper plate 61 and the lower plate 62 . The upper plate 61 and the lower plate 62 are formed with through-holes (not shown) for inserting the rotating shaft 7, and the rotating shaft 7 is supported in a vertical posture while being inserted through these through-holes. there is

The rotating shaft 7 includes a columnar shaft body 71 and an upper flange portion 72 and a lower flange portion 73 extending radially outward from the peripheral surface of the shaft body 71 . Located between the plate 61 and the lower plate 62 , the lower flange portion 73 is positioned below the lower plate 62 of the bracket 6 . Therefore, when the lower flange portion 73 abuts the lower plate 62 of the bracket 6 from below, the upward movement of the rotating shaft 7 is restricted. The height position is the upper end position of the rotating shaft 7 .

A spring 8 is mounted on the rotary shaft 7 (shaft body 71) between the upper flange portion 72 and the lower plate 62. As shown in FIG. The spring 8 always urges the upper flange portion 72 upward, so that the rotating shaft 7 is maintained at the upper end position in a natural state where no external force acts.

When the rotary shaft 7 is positioned at the upper end position, the upper end portion of the rotary shaft 7 is positioned within a bearing (not shown) mounted on the upper frame 23 . In this state, when the upper flange portion 72 is pressed downward so as to compress the spring 8, the rotary shaft 7 is lowered, and when it is lowered to the lowered position, the upper end portion of the rotary shaft 7 is disengaged from the bearing. As a result, the connection between the door 3 and the upper frame 23 is released, and the door 3 can be removed from the frame 2 .

5 to 7, a side plate 63 of bracket 6 is provided with a screw hole 63a (a pair of screw holes 63a in this embodiment) and a screw hole 63b. Mounting screws N1 inserted through insertion holes (not shown) provided in the inclined portion B1 of the door 3 are screwed into the screw holes 63a so that the bracket 6 is attached to the inclined portion B1 (more specifically, In addition, it is fixed to the inside of the frame inclined portion 31b). An opening window A is provided in the inclined portion B1 of the door member 3, and a lid member 9 for covering the opening window A is detachably attached. The opening window A is provided at a position corresponding to the upper flange portion 72 of the rotating shaft 7, and is configured such that the upper flange portion 72 faces the outside through the opening window A when the lid body 9 is removed. The cover 9 is attached to the bracket 6 by screwing a screw N2 inserted through an insertion hole (not shown) provided in the cover 9 and an insertion hole H1 provided in the inclined portion B1 into the screw hole 63b. fixed to

A side plate 63 of the bracket 6 is provided with a notch recess 63c corresponding to the opening window A. As shown in FIG. This prevents the side plate 63 of the bracket 6 from blocking the opening window A when the lid body 9 is removed.

The inclined portion B1 of the door 3 is further provided with a screw hole H2. The screw hole H2 is provided below the lower end of the rotating shaft 7 at the upper end position and above the lower end of the rotating shaft 7 at the lowered position. When the screw N3 is screwed into the screw hole H2, the shaft portion of the screw N3 is positioned below the rotating shaft 7. In this state, even if an attempt is made to press the upper flange portion 72 downward, the rotating shaft 7 will not move. abuts against the screw N3, restricts the downward movement of the rotating shaft 7, and prevents the rotating shaft 7 from coming off the bearing.

Therefore, when removing the rotary shaft 7 from the bearing, the user removes the cover 9 to expose the opening window A and removes the screw N3. Then, a driver or the like is inserted into the opening window A, and the lower flange portion 72 is pushed down by the driver or the like.

As described above, according to this embodiment, the screw N3 for preventing the descent of the rotary shaft 7 is screwed into the frame inclined portion 31b of the door 3. Therefore, unlike Patent Document 1, a mounting piece is not required. The attachment piece does not hinder the downward movement of the lower flange portion 72 .

Although the door mechanism according to the embodiments of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such embodiments, and various modifications and modifications are possible without departing from the scope of the present invention. is.

For example, in the above-described embodiment, the screw hole H2 for screwing the screw N3 for preventing the descent of the rotating shaft 7 is formed below the lower end of the rotating shaft 7 at the upper end position and at the lower end of the rotating shaft 7 at the lowered position. Although the lower end of the rotating shaft 7 is provided above the lower end and the lower end of the rotating shaft 7 abuts against the screw N3 to limit the descent of the rotating shaft 7, the present invention is not limited to this. A configuration may be adopted in which the flange portion 73 abuts the screw N3 from above to limit the descent of the rotating shaft 7 . In this case, the length of the shaft portion of the screw N3 and the position of the screw hole H2 may be appropriately adjusted.

Alternatively, the screw hole H2 is provided below the upper flange portion 72 at the upper end position and above the upper flange portion 72 at the lowered position, and the upper flange portion 72 contacts the screw N3 screwed into the screw hole H2 from above. By doing so, it is also possible to adopt a configuration in which the descent of the rotating shaft 7 is restricted. In this case, the screw N2 for fixing the lid body 9 to the inclined portion B1 may be provided with the function of the screw N3 for restricting the descent of the rotary shaft 7. 5 so that the shaft portion of the screw N2 screwed into the screw hole H2 is positioned on the moving path of the upper flange portion 72 when the rotary shaft 7 moves up and down. . In such a configuration, the screw N2 is inserted and attached to the frame inclined portion 31b, so that the same effect as in the above embodiment can be achieved.

1 door mechanism 2 door frame 3 door body 5 rotating mechanism (upper rotating mechanism)
6 Bracket 7 Rotating shaft 23 Upper frame 31 Frame member 31a Base 31b Inclined portion (frame inclined portion)
63 Side plate 63c Notch concave portion 72 Upper flange portion (flange portion)
73 lower flange (flange)
B door trailing edge B1 inclined portion B2 curved portion H2 screw hole N3 screw

Claims (4)

a door frame comprising an upper frame;
a door body;
a rotation mechanism that rotatably connects the upper frame and the door,
The door body has a frame member extending along the height direction of the door body,
The frame member has a frame inclined portion extending obliquely with respect to the thickness direction of the door body,
The rotating mechanism includes a bracket fixed to the frame inclined portion, a rotating shaft inserted through the bracket, and a bearing installed in the upper frame for supporting the rotating shaft,
The rotating shaft is supported by a bracket so as to be vertically movable between an upper end position and a lowered position,
When the rotating shaft is positioned at the upper end position, the upper end portion of the rotating shaft is positioned within the bearing, and the door body is rotatably connected to the upper frame,
When the rotating shaft descends to the lowered position, the upper end portion of the rotating shaft is disengaged from the bearing, and the door body is disconnected from the upper frame,
A door mechanism, wherein the rotary shaft is prevented from descending to the lowered position by abutment of the rotary shaft with a screw that is screwed into or passed through the frame inclined portion. The rotating shaft has a shaft body and a flange portion extending radially outward from a peripheral surface of the shaft body,
The frame inclined portion is provided with an opening window facing the flange portion,
The bracket has an upper plate, a lower plate, and a side plate connecting the upper plate and the lower plate,
2. The door mechanism according to claim 1, wherein said side plate is provided with a notch recess corresponding to said opening window. 3. The door mechanism according to claim 2, wherein the lower end of the rotary shaft or the flange portion abuts against the screw to prevent the rotary shaft from descending to the lowered position. The door frame further comprises a door leading side vertical frame and a door trailing side vertical frame arranged opposite to each other with a gap in a predetermined direction,
the door tail side end portion of the door body has a quarter-circular curved portion whose cross section is centered on the axis of the rotating shaft;
The door bottom-side vertical frame has a side portion and a protrusion extending in the predetermined direction from the side portion toward the door body,
an axis of the rotating shaft is positioned on an extension line of the projection in the predetermined direction, and a gap is provided between the projection and the curved portion;
The door body is rotatable about the rotation axis within a predetermined range,
4. The door mechanism according to claim 1, wherein the protrusion faces the curved portion in the predetermined direction regardless of the rotation angle of the door body within the predetermined range.

Images