JPH0465951B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is a technology for a hanging wheel that moves a wall panel of a movable partition (hereinafter referred to as a panel) by suspending it from a running rail installed above the room. The method is related to cross (right-angled crossing) travel, and the panels are mainly intended for panels that are heavier than conventional ones (500 kg to 1 ton).

Conventionally, there are two types of hanging vehicles for moving panels: one for curved travel, where the traveling rail crosses a gentle R line at an intersection (branch point), and the other for cross travel, where the traveling rail crosses at an intersection. However, the hanging wheel of the present invention is for the latter cross travel.

An example of a hanging wheel for cross travel is shown in FIG. 8 of the drawings. This conventional suspension wheel uses radial ball bearings with rolling balls as horizontal wheels, and has two upper and lower wheels. The running rail has upper and lower wheel sheaths that house the wheels of the horizontal two-wheel suspended vehicle, respectively, and has an inclined surface on one of the opposing wheel bottoms and alternates the upper and lower ends, so that the lower end of the horizontal wheel is inclined. It is supported by a surface and the wheels are rotated in a horizontal plane. In this technology, the suspension shaft that descends perpendicularly from the wheel can easily slide along the sliding groove, which is the downward opening of the running rail, and the sliding groove is inserted into the sliding groove at the intersection of the running rail. Even if the openings of the wheels intersect and the bottom of the wheels is cut, the two points of the upper and lower wheels can be supported on the inclined surface, and the hanging wheel can change direction at right angles along the sliding groove. .

The disadvantage of this conventional horizontal two-wheeled vehicle is that only the lower end of the wheel on the radial ball bearing is supported, and the weight of the suspended panel is supported unevenly, so to speak, and the upper and lower wheel sheaths are arranged alternately. Even when supporting it, it is easy to lose balance and it is difficult to keep the wheels level. Also, even when the panel moves straight, it tends to swing left and right from the above structure, and when moving horizontally as shown in Figure 9, the lower part protrudes and becomes diagonal as shown in Figure 10. Easy to cause shaking. For this reason, suspension wheels, including radial ball bearings, often fail.

Further, at the cross section of the running rail, the openings are generally wide because the sliding grooves intersect (FIG. 7). For this reason, the wheels of the horizontal two-wheel suspended vehicle are supported down a slope,
The bearing points when entering and leaving an intersection must be biased. In addition, there is a difference in level due to the intersection of the sloped wheel bottom and the flat wheel bottom, which has the disadvantage that the smoothness of cross running tends to be hindered. As for the difference in level, the slope is shaved down to create a gentle residual difference, but the difficulty of moving a suspended wheel up and down the slope still remains.

Above all, using radial ball bearings, which are used for rotation in the vertical plane of the main body, for rotation in the horizontal plane, poses a problem in the load bearing capacity of the suspension wheel, especially for heavy panels (for example, 300 kg or more). It becomes difficult to do so, and the impossibility of doing so tends to be exposed during cross driving.

As described above, there are many points that are dissatisfied with the conventional hanging wheels for cross-travel of moving panels, and it is considered that it is difficult to sufficiently eliminate the drawbacks with simple improvements.
We devised a sturdy downward conical rotating wheel, arranged two of them on the same plane with a sliding groove in between, and in order to withstand the suspension and movement of heavy panels ranging from 500 kg to 1 ton. We devised a cross-thrust ball bearing, mainly a thrust ball bearing that can withstand loads in the vertical direction, and attached it to the conical rotating wheel. The number of contact points between the wheel bottom and the rotating wheel has been increased to four, and in preparation for the lowering of the contact point at the cross section, the lower end of the rotating wheel is supported by the guide bottom of the running rail. The above problem was solved by making it easier.

Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 5, the present invention is a suspension wheel 28 that is loosely fitted into a running rail 29 and suspends and moves a panel 30.

That is, as shown in FIGS. 1 to 4, the main body 1, which is made of a hard material such as metal as a whole and is a small part in the shape of a regular square prism with a low height, serves as a vehicle chassis. A hanging shaft hole 2 is provided in the center of the main body 1 with a circular cross section and opening vertically. For convenience of explanation, the opening in the upper surface of the main body 1 of the hanging shaft hole 2 is
shall be. Further, in the main body 1, axle holes 5, 5, 5, which have their axle centers 4 on the diagonal of the square structural surface of the main body 1, are symmetrically arranged around the central disk 3.
5, and make four openings at the top and bottom with a circular cross section. Furthermore, the lower end of the axle hole 5 is further enlarged and cut out to a slightly larger diameter to form bearing plates 6, 6, 6, 6.

On the other hand, the conical wheel 10 serving as the rotating wheel is a downward conical body 8 whose tip 7 is rounded into a gently curved surface, with a cylindrical axle 9 projecting upward from the center of the upper surface. This conical wheel 10 is placed below the axle hole 5 in the main body 1 with the axle 9 facing upward, and a cross thrust ball bearing 11 is disposed on the upper surface of the conical body 8, so that the axle 9 is inserted into the axle hole 5. The cross thrust ball bearing 11 is placed in the bearing plate 6, and the axle 9 is inserted.
The tip of the main body 1 is made to slightly protrude from the upper surface of the main body 1. This protruding portion is fixed with a clip washer 12, and the conical wheels 10, 10, 10, 10 are rotatably attached to the main body 1.

As shown in FIG. 2, the cross thrust ball bearing 11 mainly includes a cylindrical portion A14 that externally fits the lower cover 13 onto the axle 9, and a lower circular collar 15 that is a horizontal protrusion at the lower end of the cylindrical portion A14. It is set up. A thrust ball groove 16b having a semicircular cross section is cut into an annular shape on the upper surface of the lower circular flange 15, and a rolling ball groove 17b having a semicircular cross section is cut into an annular shape on the outer wall of the cylindrical portion A14. An upper lid 18 that combines with the lower lid 13 to become a casing for the cross thrust ball bearing 11
is a cylindrical portion B that fits onto the cylindrical portion A14 of the lower lid 13;
A thrust ball groove 16a having the same semicircular cross section is carved into a ring shape on the lower surface 20 of 19 at a position facing the thrust ball groove 16b in the lower lid 13,
A rolling ball groove 17a having a semicircular cross section is carved into an annular shape on the inner wall of the cylindrical portion B19 at a position facing the rolling ball groove 17b in the lower lid 13. The combination of this lower lid 13 and upper lid 18 is
As shown in FIG. 2, the cylinder parts (A and B) 14, 19
At this time, the thrust balls 21, 21... of the steel balls are fitted into the thrust ball grooves 16a, 1.
6b to form a thrust ball bearing 22,
At the same time, rolling ball bearings 24 are formed by mounting steel rolling balls 23, 23, . . . into rolling ball grooves 17a, 17b. The cross thrust ball bearing 11 connects the lower cover 13 and the upper cover 18.

Now, the main body 1 has conical wheels 10, 10, 10, 1
0 is attached, the other circular rod body 2
A hanging shaft 27 having a cylindrical head 26 at the upper end of 5
is inserted through the hanging shaft hole 2 from above to below with the cylindrical body 25 first, so that the cylindrical body 25 protrudes downward, the head 26 is in contact with the upper surface of the main body 1, and the rotation The suspension wheel 28 of the movable weight panel of the present invention is made to be flexible.

FIG. 1 shows a state before the hanging shaft 27 is inserted, and FIG. 4 shows the hanging wheel 28 viewed from below.

Next, to explain how to use this suspension wheel 28, there are running rails 29 used in the present invention as shown in FIGS. 5 to 7. That is, the open ends of the U-shaped elongated members, each of which has a U-shaped downward opening in cross section, are bent inward at right angles to form the wheel soles 31, 31, and the open ends of the wheel soles 31 are bent downward at right angles to the hanging wheels 28. The guide bottom 33 is made to protrude at the height of the conical body 8, and its open end is further protruded inward at right angles, leaving a sliding groove 32 in the center.

The running rails 29, 29... are laid in the upper part of the room by crossing them vertically and horizontally, and the hanging wheels 28, 28... are housed in the wheel sheaths 34 of the running rails 29.
The suspension shaft 27 is suspended from the protrusion 3 of the wheel bottom 31.
5, 35, 35, 35 support the slopes of the cones 8, 8, 8, 8 of the conical wheel 10, and the tip 7 of the cone 8 is slightly lifted from the guide bottom 33 (12 mm in the example). The lower ends of the hanging shafts 27, 27 of the two hanging wheels 28, 28 are rotatably connected to the upper end surface of the panel 30.
is suspended on the running rail 29. In this case, the suspension wheel 28 shown in FIG. 1 is accommodated in the wheel sheath 34 to cover the full width of the running rail 29, with a small space above it, as shown in FIG. 5.

Regarding the movement of the suspended panel 30, the traveling rail 2
9, the conical wheels 10, 10, . Traveling rail 29, 29
At the cross portion 36 where the wheels intersect at right angles, the wheel bottom 3 in the changing direction is
1, 31, and the conical wheels 10, 10, 10, 10 of the hanging wheel 28 are attached to the protrusions 35, 35.
At the same time, the tips 7, 7, 7, 7 of the conical body 8 of the hanging wheel 28 are rotated at the top of the guide bottom 33, 33, 3 of the traveling rail 29 at the cross portion 36.
3 and 33 to support the cross travel.

According to the present invention, all the drawbacks found in the conventional horizontal two-wheel suspended vehicle 37 and the two-layer (with inclined surface) running rail 38 are eliminated. That is, the conical wheel 10 is fitted into the main body 1 as a rotating wheel, and the vehicle body is stable at a low position. The conical wheel 10 is
There are two rails facing each other with the sliding groove 32 in between, and by fitting the main body 1 completely horizontally within the running rail 29,
There is no such rocking within the running rail 29.

Further, in the present invention, a crossed thrust ball bearing 11 is mainly composed of a thrust ball bearing 22 which has an excellent bearing force when rotating in a horizontal plane, and a rolling ball bearing 23 arranged in a vertically crossed combination is disposed on this thrust ball bearing 22.
is incorporated into the conical wheel 10. The purpose of incorporating the thrust ball bearing 22 into the conical wheel 10 is to ensure smooth rotation of the conical wheel 10 when the weight panel 30 is suspended and moved. ball bearing 2
2 is not originally used for moving as a wheel, but when used as a wheel, the lower cover 13 and the upper cover 18 may
The axle 9 may wobble, and the axle 9 also swings a lot because a gap is required between the axle 9 and the axle 9.

In the present invention, the entire surface of the thrust ball bearing 22 is used, and the axle 9 of the conical wheel 10 travels. For this purpose, cylindrical parts (A and B) 14 and 19 that fit together are prepared, the upper and lower lids 18 and 13 are stable even when traveling, and the axle 9 is rocked by both cylindrical parts (A and B) and the rolling ball bearing 23. It is designed to be able to rotate without causing movement. Therefore, the present invention has solved all the problems associated with hanging and moving the weight panel 30.

When the hanging wheel 28 moves straight on the running rail 29, the slope of the conical body 8 of the conical wheel 10 rotates along the line of the protrusion 35 of the running rail 29 while making contact at one point, so there is little friction. Moreover, the guidance of the protrusion 25 provides stable and smooth running. Cross section 3 of running rail 29
6, the opening of the running rail 29 becomes wider due to the intersection of the sliding grooves 32, so the contact slope of the conical wheel 10 that contacts the protrusion 35 of the wheel bottom 31 is lowered by 1 to 2 mm in the embodiment.

In the conventional horizontal two-wheeled vehicle 37, the radial ball bearing ring 40 descended on the inclined surface 39 with a creak, but in the present invention, the radial ball bearing ring 40 descends by 1 to 2 mm.
Even during the above-described descent, the suspension wheel 28
The rail 2 runs along the rounded tip 7 of the cone 8.
Its stability is maintained by the support of the guide bottom 33 of 9.

Furthermore, as shown in FIG. 6 and FIG.
1, it is in a state where it can be tangentially crossed, and it is extremely convenient to bend at right angles and cross travel.
In addition, in the hanging wheel 28 of the present invention, the wheel sheath 34
It is not necessary to have two layers or to provide an inclined surface 39 on the wheel bottom 31. For this reason, running at the cross section 36 is good. Further, in the present invention, no lower part of the panel 30 protrudes or swings when the moving weight panel 30 moves laterally (FIGS. 9 and 10).

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the embodiment of the present invention before the hanging shaft 27 is attached, and FIG. 2 is a partially cutaway perspective view showing the relationship between the conical wheel 10 and the cross thrust ball bearing 11. 3 is a plan view of the hanging wheel 28, FIG. 4 is a perspective view of the hanging wheel 28 seen from below, and FIG. 5 is a vertical cross-sectional view of the hanging wheel 28, FIG. 6 is a plan view showing the relationship between the hanging wheel 28 and the running rail 29 during traveling, FIG. 7 is a plan view showing the cross portion 36 in FIG. 6, and FIG. 8 shows a conventional example. FIG. 9 is an explanatory view showing the horizontal movement of the panel 30, and FIG. 10 is an explanatory view showing one conventional aspect of the horizontal movement. 1... Main body, 2... Hanging shaft hole, 4... Shaft center, 5...
...Axle hole, 6... Bearing plate, 8... Cone, 9...
Axle, 10... Conical wheel, 11... Cross thrust ball bearing, 12... Clip washer, 13... Lower cover,
14...Cylinder part A, 15...Lower circular brim, 18...
Upper lid, 19... Cylinder part B, 22... Thrust ball bearing, 24... Rolling ball bearing, 27... Hanging shaft, 2
8... Hanging wheel.

Claims (1)

[Claims] 1. It is made of a hard material such as metal, and (a) a hanging shaft hole 2 is opened vertically in the center of a regular square prism-shaped body 1 with a low height, and the hanging shaft hole 2 is the center of the hanging shaft hole 2. Symmetrically, axle holes 5, 5, 5, 5 having their axis 4 on the diagonal of the square cross section of the main body 1.
The lower end of the axle hole 5 is further enlarged and cut out to a slightly larger diameter to form the bearing plate 6. At 8, a conical wheel 10 having a cylindrical axle 9 protruding upward from the center of the upper surface is attached to the axle 9.
A cross thrust ball bearing 11 is arranged on the upper surface of the conical body 8, and the axle 9 is inserted into the axle hole 5, and the cross thrust ball bearing 11 is placed in the bearing plate 6. Slightly touch the tip to the main body 1
protrude from the top surface of the clip washer 1.
(c) The cross thrust ball bearing 11 has a cylindrical portion A14 that externally fits the lower cover 13 onto the axle 9, and a cylindrical portion A14 of the cross thrust ball bearing 11.
Lower circular collar 1 which is a horizontal overhang at the lower end of the
5, and a thrust ball groove 16b having a semicircular cross section is carved in a ring shape on the upper surface of the lower circular collar 15, and the cylindrical portion A
A rolling ball groove 17 with a semicircular cross section on the outer wall of 14
b is carved into an annular shape, and the upper lid 18 is attached to the cylindrical portion A.
On the lower surface 20 of the cylindrical portion B19, which is externally fitted into the cylindrical portion B14, a thrust ball groove 16a having the same semicircular cross section is carved into a ring shape at a position facing the thrust ball groove 16b in the lower lid 13. A rolling ball groove 17 formed in the lower lid 13 on the inner wall
At a position facing b, a rolling ball groove 17a having the same semicircular cross section is carved into an annular shape, and the thrust balls 21, 21... of the steel balls are inserted into the thrust ball groove 16.
a, 16b to form a thrust ball bearing 22, and at the same time steel rolling balls 23, 23...
are mounted in the rolling ball grooves 17a and 17b to form a rolling ball bearing 24, and the lower cover 13 and upper cover 18 are connected to form a casing. columnar head 26
The hanging shaft 27 having a diameter of 25 mm is inserted through the hanging shaft hole 2 from above to below with the circular rod body 25 first, so that the circular rod body 25 projects downward, and the head 26 of the main body 1 is inserted. A suspension wheel 28 of the moving weight panel is in contact with the upper surface and is rotatable.