JP2987123B2 - Door pivot bearing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pivot bearing device for a door in a building, wherein the height of the hanging side of the door is adjustable.

[0002]

2. Description of the Related Art In order to enable opening and closing of a door, pivots are respectively projected at upper and lower ends of a hanging side of a frame constituting the door, and the above-mentioned pivots are provided above and below a frame provided on an inner periphery of an opening of a wall. A structure provided with a pivot bearing (bearing pot) for rotatably supporting the pivot is generally used. When the door is closed, the upper frame of the door contacts the upper frame of the wall or the lower frame of the door contacts the lower frame of the floor due to the mounting error of the pivot and the bearing pot. In order to prevent the rotation, the mounting position of the pivot bearing on the lower frame is shifted left and right to adjust the inclination angle of the rotation axis connecting the upper and lower pivots with respect to the vertical line.

However, in the above bearing device, the center axis of the bearing pot is displaced right and left, that is, in parallel with the length direction of the lower frame, so that the height of the tip of the door when the door is closed is increased. Although it could be adjusted, it was not possible to adjust the height of the tip of the door with the door open at right angles to the wall. Therefore, in a so-called barrier-free structure in which there is no step on the floor at the position of the lower frame, it is extremely difficult to perform a correction work to prevent the lower end of the door from contacting the floor when the door is opened.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a bearing pot fixed to a lower frame is vertically displaced instead of being displaced left and right, so that the door can be opened and closed both in a closed state and in an open state. The height of the tip can be adjusted, so that the lower surface of the tip of the door can contact the floor without using a tool even in a barrier-free structure.

[0005]

A door pivot bearing device according to the present invention is a door pivot bearing device attached to a lower frame for rotatably supporting a pivot projecting from a lower end on a hanging side of the door. A bearing base fixed to the lower frame and provided with a square hole having a regular polygonal cross section on the upper surface, and a prism having a regular polygonal cross section insertable into the square hole of the bearing base, and the pivot is formed on the upper surface. And a bearing pot having a supporting circular hole, on the bottom surface of the bearing hole and the bottom bottom surface of the bearing hole, by changing the phase of the bearing hole inserted into the square hole of the bearing stand, It is characterized in that a step portion for raising and lowering the bearing pot or unevenness is formed.

The above-mentioned door pivot bearing device comprises a bearing base and a bearing pot, and the bearing base is fixed to a lower frame.
A bearing pot is inserted into the square hole of the bearing stand, and a pivot projecting from the door is rotatably supported by the bearing pot.
Then, when the bearing pot is inserted into the square hole of the bearing stand, the bearing pot moves up and down by the phase thereof, so that the height of the hanging side of the door is adjusted by the phase at the time of the insertion.
That is, the support height of the door is changed only by changing the phase of the bearing pot to the bearing stand and replacing it. Since the hanging side height of the door itself is adjusted, the tip height of the door is simultaneously changed both when the door is closed and when the door is opened. Therefore, even when there is no step on the floor at the position of the lower frame, the tip of the door can be prevented from contacting the floor surface when the door is opened.

The cross section of the square hole and the bearing pot of the bearing stand is formed in a square as described in claim 2, and the step of the bottom face of the square hole of the bearing stand and the step of the bottom lower face of the bearing pot are each four steps. In this case, by changing the phase of the bearing with respect to the bearing base by 90 degrees and replacing it, the height of the bearing becomes 4
Changed to a column. The bottom surface of the bearing hole and the bottom surface of the bearing pot may each be divided into two levels, and the height may be adjusted to two levels. Further, the bottom surface of the square hole of the bearing base and the bottom surface of the bottom of the bearing pot are each formed in an equilateral triangle, and the step portion is formed in three steps and has a height of 3 steps.
It may be adjusted in steps. In addition, the bottom surface of the bearing hole and the bottom surface of the bearing pot are formed in a regular pentagon, a regular hexagon, etc., respectively, and the steps are formed in a stepped shape such as five steps, six steps, etc., and the height is five steps. It may be adjustable to six steps or the like. However, the above four stages are practically most preferable in terms of manufacturing and easiness of operation.

The square hole of the bearing base is formed in a regular polygon, and the bearing pot is formed in the shape of a prism having a regular polygonal cross section which can be inserted into the square hole. When inserted, the bearing pot does not rotate with respect to the bearing stand. That is, the bearing stand and the bearing pot itself have a function of preventing the bearing from rotating. Therefore, it is not necessary to particularly provide a detent on the steps or irregularities formed on the square hole bottom surface of the bearing stand and the bottom lower surface of the bearing pot,
Further, the shape of the step portion or the unevenness can be simplified.
For example, when a stepped step is formed on one of the bottom surface of the square hole of the bearing base and the bottom surface of the bottom of the bearing pot, it is not necessary to form a similar stepped step on the other side. It is also possible to provide only one convex portion that is in contact with the lowest tread surface in the step portion having a stepped shape.

[0009]

In FIG. 2, reference numeral 1 denotes a door, and a pivot 3 is projected downward by a pivot support 2 on the lower surface of the door 1 on the suspension side (right side in the figure). A lower frame is embedded under the floor 5 below the door 1 so that the upper surface of the lower frame 5 coincides with the floor 5.
0 is fixed. As shown in FIGS. 1 and 2, the bearing base 10 includes a rectangular substrate 11 and a square tube portion 15 having a square cross section formed integrally with the lower surface of the central portion thereof. The substrate 11 has a large circular hole 12 in the center.
However, a bolt hole 13 is provided on each of the left and right sides thereof, and a groove 14 connecting the front surface of the edge and the circular hole 12 at the center is formed in the front portion of the upper surface of the substrate 11.

A square hole 16 is provided concentrically inside the circular hole 12 following the circular hole 12 in the rectangular cylindrical portion 15 from above. When the lower left of FIG. 1 is the front and the upper left is the left, the three steps whose heights increase sequentially with respect to the bottom surface 17 of the left front corner of the square hole 16 are formed in a clockwise stepwise manner in a 90-degree direction. It is formed at intervals of degrees. That is, in FIGS. 1, 2 and 3, the bottom surface 17 at the left front corner forms the lowest first tread surface, and then (the rear left corner) the second second tread surface 17a is located at the right (rear right). A third third tread surface 17b is provided at the corner (in the corner), and the highest fourth tread surface 17 is provided in front of the third tread surface 17b (right front corner).
c are sequentially formed with equal steps.

In FIGS. 1 and 2, a bearing pot 20 illustrated above the bearing base 10 is formed integrally with a square column part 21 having a square cross section which fits into the square hole 16 of the bearing base 10 and an upper end thereof. And a disk-shaped flange 22 fitted into the circular hole 12 on the upper surface of the bearing base 10. The above-mentioned prism portion 21 is provided with a circular hole 23 into which the above-mentioned pivot 3 can be rotatably inserted from above, and a round rivet 24 is fixed to the bottom surface thereof with a round head 24a facing upward.
Constitutes a metal for receiving the lower end of the pivot 3. Note that a steel ball can be used instead of the round rivet 24.

A stepped portion 22a is recessed in the lower part of the front surface of the flange 22 (see FIG. 1), and when the flange 22 is fitted into the circular hole 12 of the bearing base 10, the substrate 11 of the bearing base 10
The tip of a tool such as a screwdriver can be inserted into the groove 14 provided in the groove 22 and can be engaged with the step 22a. FIG. 2 shows a state in which the bearing pot 20 of FIG. 1 is turned clockwise by 90 degrees and the step 22a is turned to the left.

On the bottom lower surface 25 of the prism portion 21 of the bearing pot 20, there are three steps corresponding to the step-like steps around the bearing base 10, the height of which decreases downward with respect to the bottom lower surface 25 in order. The portion is formed in a stepwise manner. In FIG. 1, the bottom lower surface 25 at the right front corner forms the lowest first tread surface. Then, a second tread surface 25a whose height increases downward is formed behind the first tread surface 25 (right rear corner),
A third tread 25b (not shown) is formed on the left (left rear corner), and a fourth tread 25c having a maximum downward height is formed in front of the third tread 25b (front right corner). The third tread 25b is shown on the right side in FIG. 2 having a phase difference of 90 degrees from that in FIG.

FIG. 4 shows a state in which the bottom of the bearing base 10 is unfolded and its tread surfaces 17 to 17c and the bearing pot 20 in the phase of FIG.
In relation to the tread surfaces 25 to 25c. Since all the steps of the bearing pedestal 10 and the bearing pot 20 are set to be equal, in FIG. 4, when the fourth tread 25 c of the bearing pot 20 rides on the second tread 17 a of the bearing pedestal 10. A gap is formed only between the first tread surface 17 of the bearing base 10 and the first tread surface 25 of the bearing pot 20, and the remaining three sets of vertically opposed tread surfaces contact each other. That is, the second tread surface 17a, the third tread surface 17
The fourth tread surface 25c, the third tread surface 25b, and the second tread surface 25a of the bearing pot 20 ride on the b and the fourth tread surface 17c, respectively, and the height of the bearing pot 20 is the second from the lower side.

Then, the bearing pot 20 is rotated 90 degrees counterclockwise.
When the phase is turned to the phase shown in FIG. 1, all four sets of tread surfaces opposing vertically contact each other. That is, the former first tread surface 1
7, the second tread surface 17a, the third tread surface 17b, and the fourth tread surface 17c are respectively provided with the fourth tread surface 25 of the bearing pot 20.
c, the third tread surface 25b, the second tread surface 25a, and the first tread surface 25 ride, and the height of the bearing pot 20 becomes minimum. When the bearing pot 20 is turned 90 degrees clockwise from the state of FIG. 4, the third tread surface 17b and the fourth tread surface 17c of the bearing stand 10 are respectively placed on the fourth tread surface 25c of the bearing pot 20.
And the third tread surface 25b rides, and the bearing pot 20 is the second from the higher side. Further, when the bearing pot 20 is rotated clockwise by 90 degrees, the fourth tread surface 25c of the bearing pot 20 rides on the fourth tread surface 17c of the bearing stand 10, and the bearing pot 20
Height is the highest.

In the above embodiment, both the bearing base 10 and the bearing pot 20 are provided with four steps of the same step at the same level, but only one of them has a step of changing the height to four steps. And the fourth tread surface 17 having the highest height
c or 25c only, the second tread 17a (or 25a) and the third tread 17b (or 25b)
Can be omitted.

In the above-described embodiment (see FIG. 3), a square square hole 16 is formed in the bearing base 10, but a regular triangular square hole 16A is formed as shown in FIG. Then, the bottom is divided by a bisector of a corner to form three steps 17, 17 a and 17 b, and the bearing pot 20 is similarly formed with three steps to increase the height. It can be changed to three steps. Also, as shown in FIG.
A square hole 16A similar to that of (A) is formed, and the bottom is divided by a vertical bisector of the side, and three steps of tread surfaces 17, 17a, 17 are formed.
b may be formed, and the bearing pot 20 may be similarly formed with three steps of treads to change the height to three steps.

As shown in FIG. 5 (C), a square square hole 16 similar to that of FIG. 3 is formed, and the bottom is divided by bisectors of two opposing sides to form a rectangular tread surface 17, 17a may be formed in two steps, and the bearing pot 20 may be formed with a similar two-step tread surface to change the height to two steps. As shown in FIG. 5 (D), the bottom of the square hole 16 is divided by two diagonal lines to form triangular treads 17, 17a, 17a.
b and 17c are formed in four steps, and the same
A stepped surface may be formed to change the height to four steps.

Further, as shown in FIG. 5 (E), a regular pentagonal square hole 16E is formed, and the bottom thereof is divided by a bisector of a corner to form five triangular treads 17, 17a, 17a. 17b, 1
The steps 7c and 17d may be formed in five steps, and the bearing pot 20 may be formed with the same five-step steps to change the height to five steps. Further, as shown in FIG. 5 (F), a regular hexagonal square hole 16F is formed, and the bottom is divided by a bisector of a corner to form six triangular treads 17, 17a, 17b,
17c, 17d, and 17e may be formed in six steps, and the bearing pot 20 may be formed with the same six-step steps to change the height to six steps. Further, as shown in FIG. 5 (G), the bottom of the regular hexagonal square hole 16F is divided by bisectors of every other corner, and three parallelogram treads 17, 17 are formed.
a and 17b may be formed in three steps, and the bearing pot 20 may be formed with a similar three-step tread surface to change the height to three steps.

[0020]

According to the first and second aspects of the present invention, when the bearing pot is inserted into the square hole of the bearing stand, the height of the bearing pot depends on the phase and the bottom of the square hole of the bearing stand and the bearing. The number of steps is changed to two or more depending on the number of steps or irregularities formed on the lower surface of the bottom of the pot. That is, the support height of the door is changed in multiple stages simply by changing the phase of the bearing pot and replacing it with the bearing stand. Since the hanging side height of the door itself is adjusted, the tip height of the door is simultaneously changed both when the door is closed and when the door is opened. Therefore, even when there is no step on the floor at the position of the lower frame of the door, the height of the tip of the door can be adjusted so that the tip of the door does not contact the floor surface when the door is opened. Then, it is only necessary to change the phase of the bearing pot with the door removed and replace it, and in that case, almost no tools are required.
When the bearing pot is worn, only the bearing pot can be replaced. Also, the height of the bearing pot is set at the phase when the bearing pot is inserted into the bearing stand,
After the bearing pot is inserted into the bearing stand, the bearing pot does not rotate, so that the height of the bearing pot does not change during use.

In particular, according to the second aspect of the present invention, the height of the bearing is changed to four steps by changing the phase of the bearing with respect to the bearing base by 90 degrees and replacing the bearing with 90 degrees. Easy to use and practical.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a use state.

FIG. 3 is a plan view of a bearing base.

FIG. 4 is an operation explanatory view showing a bottom portion of a bearing pedestal square tube portion in a developed state.

FIG. 5 is a plan view showing another embodiment of a bearing base.

[Explanation of symbols]

1: Door 3: Pivot 5: Floor surface 10: Bearing base 11: Substrate 12: Circular hole 13: Bolt hole 14: Groove 15: Square tube part 16: Square hole 17: Bottom surface (first tread surface) 17a: Second Tread surface 17b: Third tread surface 17c: Fourth tread surface 20: Bearing pot 21: Prismatic part 22: Flange 23: Circular hole 24: Round rivet 25: Bottom lower surface (first tread surface) 25a: Second tread surface 25b : Third tread surface 25c: Fourth tread surface

Claims (2)

(57) [Claims] 1. A door pivot bearing device attached to a lower frame of a door for rotatably supporting a pivot projecting from a lower end on a hanging side of the door. It consists of a bearing base having a polygonal square hole, and a bearing pot formed in a prismatic shape of a regular polygonal cross section that can be inserted into the square hole of the bearing base, and having a support circular hole of the pivot on the upper surface, On the bottom surface of the bearing hole and the bottom surface of the bottom of the bearing pot, a step portion or unevenness for raising and lowering the bearing pot with respect to the bearing base by changing the phase of the bearing pot inserted into the square hole of the bearing base was formed. A pivot bearing device for a door, characterized in that: 2. The pivot bearing device for a door according to claim 1, wherein the cross-sectional shape of each of the square hole and the bearing pot of the bearing base is formed to be square, and the bottom surface of the square hole of the bearing base and the bottom bottom surface of the bearing pot are formed. A pivot bearing device for a door in which each of the steps is formed in four steps.