JPH0219276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for movably suspending a movable partition panel from a ceiling rail attached to a ceiling surface.

[Conventional technology]

In this type of conventional mobile suspension device, a runner for suspending a partition panel from a ceiling rail is provided with rotating rollers whose axis of rotation is oriented horizontally. However, if the axis of rotation of the rotating roller is horizontal, the runner will sway laterally with respect to the running direction, and the side surface of the rotating roller will come into contact with the ceiling rail, causing a squeak. This method not only has disadvantages such as the occurrence of smudges, but also has the disadvantage that it is difficult to change the direction of the runner at a direction change point or a bend point in the ceiling rail.

Therefore, as prior art, Japanese Utility Model Application Publication No. 53-658 or No. 53-21746 discloses that a rotary mechanism is installed at the four corners of the lower surface of a rectangular roller receiving plate in a runner that moves freely within a ceiling rail. While four rotating rollers with vertical axes are provided facing downward, both the left and right runner receiving surfaces of the ceiling rail, which the lower surfaces of these four rotating rollers come into contact with, are formed into downwardly inclined surfaces. The outer part of the lower surface of the rail in the running direction is in contact with both runner receiving surfaces of the ceiling rail to prevent lateral vibration of the runner and to easily create direction change points or bend points. I am proposing to do so.

[Problem to be solved by the invention]

However, in this way, both runner receiving surfaces of the ceiling rail where each rotating roller in the runner touches,
Forming each downwardly inclined surface means that a ridgeline where each inclined runner receiving surface intersects linearly is inevitably formed at the joint of each inclined runner receiving surface at a direction change point or a bending point in the ceiling rail. Therefore, when each rotating roller of the runner passes through this ridgeline, there is a problem that not only is there an impact noise or the runner rattling in the vertical and horizontal directions, but also at the direction change point or bending point. When joining the ceiling rails, there was a problem in that it was difficult to align the respective inclined runner receiving surfaces.

As described above, the present invention provides a method for running a runner on which a partition panel is suspended along a ceiling rail by providing four rotating rollers on the lower surface of the runner with the axis of rotation in the vertical direction. The purpose of this system is to solve the problems that the runners have, and to reduce the running resistance and wear of the runners.Other purposes are to further reduce the running resistance of the runners and to improve their durability. The aim is to further improve the technology and make it more compact.

[Means to solve the problem]

In order to achieve this first object, the present invention provides a main rail and a branch rail each having a runner receiving plate bent inward at the lower end of both left and right vertical plates, and a suspended main rail with a partition panel suspended. and a runner that runs freely in the longitudinal direction within the branch rail, and the runner is fitted into a roller receiving plate formed in a rectangular shape in plan view and rotatably in the vertical direction at the center of the roller receiving plate. and a hanging shaft for hanging the partition panel, and rotating rollers that are in contact with the upper surfaces of both runner receiving plates of both rails are attached to the lower surfaces of each of the four corners of the roller receiving plates. In a movable suspension device for a movable panel in which rotating rollers are arranged to freely rotate around a vertical axis, a support shaft projecting upward from each of the rotating rollers is connected to the roller receiver. Loosely inserted into a bearing hole drilled in a plate so that it is rotatable and the axis of the support shaft can be tilted in any direction,
Each of the support shafts of each of the rotating rollers is provided with a thrust bearing between the rotating roller and the lower surface of the roller receiving plate for transmitting a vertically upward load on the rotating roller to the roller receiving plate. The upper surface of the roller receiving plate is fitted so as to be in contact with the lower surface of the roller receiving plate, and the center of two rotating rollers arranged one behind the other on the right side with respect to the running direction of the runner on the lower surface of the roller receiving plate when viewed from above. A line that connects the centers of two rotating rollers lined up front and back on the left side with respect to the running direction of the runner, A line that connects the centers of two rotating rollers lined up left and right on the front side with respect to the running direction of the runner, In the area outside the line connecting the centers of the two rotating rollers arranged on the left and right on the rear side with respect to the direction, there are areas extending inward from each of the four side edges of the roller receiving plate and with respect to the horizontal plane. While providing a sloped surface that slopes diagonally upward by an appropriate angle, a region portion of the lower surface of the roller receiving plate that is inside the inner end of the sloped surface is formed into a curved surface that is concave upward from the inner end of the sloped surface. It was configured to form.

In addition to the above configuration, in order to achieve another object, the points where the lower surface of each of the rotating rollers comes into contact with the upper surface of the runner backing plate are located at the four side edges of the roller backing plate. It was designed to be located more inward.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 indicates a ceiling rail in which a main rail 2 and a branch rail 2' are joined in a T-shape. 'teeth,
Each has a downward C-shaped cross section, and its left and right vertical plates 3, 3,
The lower ends of the runners 3' and 3' are provided with runner receiving plates 4 and 4', each of which is horizontally bent inward.

Reference numeral 5 designates a runner that runs freely in the longitudinal direction within both rails 2 and 2' of the ceiling rail 1, and the runner 5 includes a roller receiving plate 6 formed in a substantially square shape in a plan view, It consists of a suspension shaft 7 fitted into the center of the support plate 6 so as to be rotatable in the vertical direction, and on the lower surface of the roller support plate 6, both runner support plates 4 of the main rail 2 and the branch rail 2', Rotating rollers 8a, 8b, 8c, whose axis of rotation is in the vertical direction so as to contact the upper surface of 4'.
8d are arranged at four locations on the front, back, left and right with respect to the traveling direction along each rail 2, 2', that is, at each of the four corners of the roller receiving plate 6.

When the runner 5 is located within the main rail 2 of the ceiling rail 1, one pair of front and rear rollers located on the right side with respect to the longitudinal direction of the main rail 2 among the rotating rollers 8a, 8b, 8c, and 8d The rotating rollers 8a and 8d are in contact with the upper surface of one runner receiving plate 4, and the pair of front and rear rotating rollers 8b and 8c located on the left side are in contact with the upper surface of the other runner receiving plate 4, and the runner 5 is in contact with the upper surface of the main rail 2. When moving from to the branch rail 2', each rotating roller 8a, 8b,
Among 8c and 8d, a pair of front and rear rotating rollers 8b and 8a are located on the right side with respect to the longitudinal direction of the branch rail 2'.
is in contact with the upper surface of one runner receiving surface 4', and the pair of front and rear rotating rollers 8c, 8d located on the left side are in contact with the upper surface of the other runner receiving surface 4', respectively.
It is configured to run within each rail 2, 2' in its longitudinal direction.

Further, a partition panel 9 that becomes a partition wall of a room, etc. is attached to the lower end of the hanging shaft 7, and the partition panel 9 can freely rotate horizontally with respect to the runner 5 via the hanging shaft 7. is suspended from.

A thrust bearing 11 and a bearing bush 12 are respectively fitted onto the support shafts 10 which protrude upward from the four rotating rollers 8a, 8b, 8c and 8d of the runner 5. Bearing holes 1 bored at the four corners of the roller receiving plate 6
The thrust bearing 1 is rotatably inserted into the thrust bearing 1.
By bringing the upper surface of 1 into contact with the lower surface of the roller receiving plate 6, the vertically upward load on each rotating roller is transmitted to the roller receiving plate 6 via the thrust bearing 11.

In this case, the inner diameter of each bearing hole 13 in the roller receiving plate 6 is made slightly larger than the outer diameter of the bearing bush 12 fitted onto the support shaft 10, so that the rotation of each rotating roller 8a, 8b, 8c, 8d The structure is such that the axis can be tilted in any direction.

On the other hand, the entire roller receiving plate 6 is formed into a downward bowl shape, and on the lower surface of the roller receiving plate 6, two rotating rollers 8a and 8b are arranged front and back on the right side with respect to the running direction of the runner 5 when viewed from above. ,8c,8d
A line (a'-d') connecting the centers a and d of
c'), the center c of the two rotating rollers 8c and 8d arranged left and right on the front side with respect to the running direction of the runner 5,
outside the line (c″-d″) connecting d and the line (a″-b″) connecting the centers a and b of the two rotating rollers 8a, 8b arranged on the left and right on the rear side with respect to the running direction of the runner 5. The region extends inward from each of the four side edges 6a, 6b, 6c, and 6d of the roller receiving plate 6, and has an appropriate angle θ0 with respect to the horizontal plane B.
Inclined surfaces 14a, 14 that are inclined upward by
a', 14b, 14b', 14c, 14c', 14d,
14d' is provided.

In addition, in the drawings of the embodiment, the inclined surfaces 14a,
14a', 14b, 14b', 14c, 14c', 14
d and 14d' are provided only at four corners of the roller receiving plate 6. In this embodiment, the inclined surface 14a and the inclined surface 14d are in the same direction of inclination, and the inclined surface 14b is and the inclined surface 14c have the same inclination direction, and the inclined surface 14a' and the inclined surface 1
4b' is the same inclination direction, and the inclination surface 1
4c' and 14d' are in the same inclination direction. In addition, each of these inclined surfaces 14a, 14a', 14b, 14b',
14c, 14c'14d, 14d' and the suspension shaft 7
The angle θ between the axis 16 and the axis 16 is smaller than 90 degrees. Furthermore, the inclined surfaces 14a and 1
4a', inclined surfaces 14d and 14b', inclined surfaces 14c and 1
4c', the inclined surfaces 14d and 14d' are the center of the hanging shaft 7 and the center of each rotating roller a, b,
It intersects with the downwardly convex ridge lines C, D, E, and F on the normal lines connecting the lines c and d, respectively.

On the other hand, among the lower surfaces of the roller receiving plate 6, each of the inclined surfaces 14a, 14a', 14b, 14b', 1
4c, 14c', 14d, 14d', the area inside the inner end is formed into each inclined surface 14a, 14a',
14b, 14b', 14c, 14c', 14d, 14
By forming a curved surface 6e that is concave upward from the inner end at d', each rotating roller 8a, 8
Thrust bearing 11 in each of b, 8c, 8d
The upper surface of each of the inclined surfaces 14a, 14a', 14
b, 14b', 14c, 14c', 14d, 14d'.

In this configuration, the runner 5 is connected to the ceiling rail 1
When located on the main rail 2 in the main rail 2, the pair of front and rear rotating rollers 8a, 8d on the right side with respect to the longitudinal direction of the main rail 2 has the upper surface of the thrust bearing 11 in each of them aligned with the inclined surface 14a, 14d on the roller receiving plate 6. The pair of front and rear rotating rollers 8b, 8c on the left side tilts inward by contacting the rollers 8b and 8c, respectively, so that the upper surface of the thrust bearing 11 in each of them is aligned with the inclined surface 14 on the roller receiving plate 6.
b, 14c, the rotating rollers 8a, 8b, 8c,
8d indicates two lines (a″-b″) and a line (c″) perpendicular to the longitudinal direction of the main rail 2 among the four lines connecting the centers a, b, c, and d of each rotating roller. ―
d″) on the outermost points 15a, 15b, 1
As shown in FIG. 6, only the runners 5c and 15d are in contact with the upper surfaces of both runner receiving plates 4 on the main rail 2, so that they rotate smoothly as the runners 5 travel.

When the runner 5 moves from the main rail 2 to the branch rail 2' side, among the rotating rollers 8a, 8b, 8c, and 8d at the four corners of the lower surface of the roller receiving plate 6, in the longitudinal direction of the branch rail 2', A pair of front and rear rotating rollers 8a and 8b on the right side and a pair of front and rear rotating rollers 8c and 8d on the left side are located at points 15a and 15a on a line (a″-b″) connecting their centers a and b, respectively.
15b, and points 15c and 15d on the line (c''-d'') connecting centers c and d will come into contact with the upper surface of both runner receiving plates' on branch rail 2', so the branch rail of runner 5 As it travels along 2', it is in an unstable posture in which it does not rotate.

In this unstable posture, vibrations caused when the runner 5 moves from the main rail 2 to the branch rail 2' side and the swinging movement of the partition panel 9 cause the runner 5 to move horizontally with respect to the longitudinal direction of the branch rail 2'. Therefore, among the rotating rollers 8a, 8b, 8c, and 8d, the pair of front and rear rotating rollers 8a, 8b on the right side with respect to the longitudinal direction of the branch rail 2' is a thrust bearing in each of the rotating rollers 8a, 8b, 8c, and 8d. From an unstable posture in which the upper surface of 11 is in contact with the inclined surfaces 14a, 14b, the inclined surfaces 14a', 14
While automatically changing the posture to an unstable posture in contact with b' and tilting inward, each rotating roller 8a, 8
Among b, 8c, and 8d, a pair of front and rear rotating rollers 8c on the left side with respect to the longitudinal direction of the branch rail 2';
Similarly to the above, 8d also receives an external force in a direction transverse to the longitudinal direction of the branch rail 2' due to the vibration when the runner 5 moves from the main rail 2 to the branch rail 2' side and the swinging movement of the partition panel 9. As a result, the upper surface of each thrust bearing 11 automatically changes its posture from an unstable posture in which it contacts the inclined surfaces 14c and 14d to a stable posture in which it contacts the inclined surfaces 14c' and 14d'. Instead, it will turn inward.

As a result, each rotating roller 8a, 8b, 8c, 8d
are the two lines (a'-d') and line (b'-c') on the outermost points 15a', 15b', 15c',
As shown in FIG. 7, only runner 15d' automatically assumes a stable posture in which it comes into contact with the upper surface of both runner receiving surfaces 4' on branch rail 2', so that it runs along the main rail 2. As in the case, the runner 5 rotates smoothly as the runner 5 runs.

Further, when the runner 5 is transferred from the branch rail 2' to the main rail 2, each rotating roller 8a,
8b, 8c, and 8d automatically return to the stable posture shown in FIG. 6 described above.

In this case, each rotating roller 8
Among the lower surfaces of a, 8b, 8c, and 8d, the outer part with respect to the running direction of the runner is attached to the main rail 2.
The upper surface of both runner receiving plates 4 and the main rail 2
In order to contact the upper surfaces of both runner receiving plates 4' on the branch rail 2' that intersects with the
As shown in FIG. 14, bearing bushes 12 are provided upwardly protruding from the rotating rollers 8a, 8b, 8c, and 8d of the runner 5, and fitted onto the support shaft 10, and these are attached to the four corners of the roller receiving plate 6. The rotating rollers 8a, 8 are closely fitted into the bearing holes 13 of the rollers 8a and 8, while forming the roller receiving plate 6 into a downward bowl shape.
b, 8c, 8d rotation axes 17a, 17b, 17
It is considered that c and 17d should be inclined with respect to the axis 16 of the suspension shaft 7 so as to intersect at an arbitrary point O1 below the axis 16 of the suspension shaft 7.

However, if this is done, each rotating roller 8a,
8b, 8c, and 8d, as shown in FIG. 14, in plan view, the outer peripheral point 19 on the extension of the line 18 connecting the center point O2 and the center point O3 of the hanging shaft 7 is the runner receiving plate 4, 4', and this contact point 19 is not located on a line 20 perpendicular to the direction of travel in the direction of arrow A, but on this line 20. and a line 21 parallel to the running direction, and the force that rotates each rotating roller when the runner 5 runs in the direction of the arrow is a line 22 parallel to the running direction with respect to the contact point 19. The rotation radius R from the center point O2 of each rotating roller to the contact point 19, and the distance from a line 21 passing through the center point O2 of the rotating roller to a line 22 passing through the contact point 19. Since there is a difference between S, that is, the radius of action of the rotational force, S, when each rotating roller rotates, the difference between the radius of rotation R and the radius of action of the rotational force, S, causes the upper surface of the rotating roller and the runner receiving plate to A slip occurs between the two.

This slip increases the rotational resistance of each rotating roller and, in turn, increases the running resistance of the runner 5.
This not only makes the running of the runner heavier, but also increases wear on the rotating rollers and the runner receiving plate.

In contrast, each rotating roller 8a, 8 in the present invention
As mentioned above, when the runner 5 runs along the main rail 2, the lower surfaces of the runners b, 8c, and 8d are a line (a″-b″) perpendicular to the running direction along the main rail 2 and a line (d″ -c''), the outermost points 15a, 15b, 15c, and 15d on the main rail 2 come into contact with the upper surfaces of both runner receiving plates 4, and the runner 5 runs along the branch rail 2'. Sometimes, the outermost points 15a', 15b', 15c', 15 on the line (a'-b') and line (b'-c') perpendicular to the running direction along the branch rail 2'
d' comes into contact with the upper surface of the runner receiving plate 4' on the branch rail 2', so that each contact point 15
a, 15b, 15c, 15d, 15a', 15b',
Since the radius of rotation at 15c' and 15d' and the radius of action of the rotational force are always approximately equal, each rotating roller 8
When the runners a, 8b, 8c, and 8d rotate, no slippage occurs between them and the upper surface of the runner receiving plate, and the runners 5 rotate smoothly as they travel along the respective rails 2, 2'.

Further, in the present invention, each rotating roller 8a, 8
From the centers a, b, c, d of b, 8c, 8d, the point where each rotating roller 8a, 8b, 8c, 8d comes into contact with the upper surface of each runner receiving surface 4, 4', that is, the contact point 15a , 15b, 15c, 15d, 15a',
The radius up to 15b', 15c', 15d' is the center a, b, c, d of each rotating roller 8a, 8b, 8c, 8d.
By making the distance smaller than the distance from the outer peripheral surface of the roller receiving plate 6 to
b, 15c, 15d, 15a', 15b', 15c',
15d', as shown in FIGS. 8, 9 and 10, each inclined surface 14 of the lower surface of the roller receiving plate 6
a, 14b, 14c, 14d, 14a', 14b',
14c', 14d', that is, located inside the four side edges 6a, 6b, 6c, 6d of the roller receiving plate 6, the vertical upward direction with respect to each contact point. The load on each inclined surface 14a, 1 which the upper surface of the thrust bearing 11 contacts is
4b, 14c, 14d, 14a', 14b', 14
c'14d', and it is possible to reduce the occurrence of twisting etc. on the rotating rollers 8a, 8b, 8c, 8d and their support shafts 10, etc. due to loads in the vertical upward direction. The rotation of each rotating roller becomes smoother, and the support shaft can be made thinner.

[Action/effect of the invention]

As described in the claims, the present invention provides support shafts that protrude upward from each of the rotating rollers disposed at the four corners of the lower surface of the roller receiving plate in a runner. A rotary roller and a roller receiver are loosely inserted into the drilled bearing hole so that the support shaft is rotatable and can be tilted in any direction, and the support shaft of each of the rotary rollers has a rotary roller and a roller receiver. A thrust bearing for transmitting a vertically upward load on the rotating roller to the roller receiving plate is inserted between the lower surface of the plate so that the upper surface of the thrust bearing is in contact with the lower surface of the roller receiving plate, and , on the lower surface of the roller receiving plate, a line connecting the centers of two rotating rollers lined up front and back on the right side with respect to the running direction of the runner; a line connecting the centers of two rotating rollers lined up front and back on the left side with respect to the running direction of the runner; line, a line connecting the centers of two rotating rollers arranged left and right on the front side with respect to the running direction of the runner, and an area outside the line connecting the centers of two rotating rollers arranged left and right on the rear side with respect to the running direction of the runner. is provided with an inclined surface extending inward from each of the four side edges of the roller receiving plate and inclined upward at an appropriate angle with respect to the horizontal plane,
By forming a region of the lower surface of the roller receiving plate inside the inner end of the inclined surface into a curved surface recessed upward from the inner end of the inclined surface, the four corners of the lower surface of the roller receiving plate of the runner are formed. When the runner runs along the main rail, the four rotating rollers arranged in
The upper surface of the thrust bearing for each of them is in a stable posture in which it is tilted inward so that it is in contact with the lower surface of the roller receiving plate on both the left and right sides in the longitudinal direction of the main rail. Koro is
When the runner is transferred from the main rail to the branch rail, a pair of front and rear rotating rollers on both left and right sides with respect to the longitudinal direction of the branch rail, and the upper surface of the thrust bearing for each of them is connected to the branch rail on the lower surface of the roller receiving plate. Even when running the runner along the main rail, the runner is in a stable position tilted inward so as to touch the slopes on both the left and right sides in the longitudinal direction. Even when running, the outermost part of the lower surface of each rotating roller with respect to the running of the runner comes into precise contact with the upper surface of the runner receiving plate on both rails. Unlike the prior art, there is no need to form the upper surface of the runner receiving plate in the ceiling rail into an inclined surface.

As a result, the upper surfaces of the runner receiving plates of both rails can be formed in the same plane at direction change points and bend points in the main rail and branch rails, so when the runner passes through the direction change point or bend point. In addition to reducing the impact noise of
It is possible to run smoothly without rattling at the direction change point or bend point, and it is also possible to easily align the upper surface of the runner receiving plate at the direction change point or bend point in the main rail and branch rail.

In addition, each rotating roller in the runner rotates smoothly without any slippage on the upper surface of the runner backing plate, so the running resistance of the runner is small, allowing the runner to run with light force, and wear and tear on each rotating roller and runner backing plate. This has the effect of reducing the amount of water and improving durability.

Furthermore, according to the invention of claim 2,
The running resistance of the runner can be further reduced, the durability can be further improved, and furthermore, by reducing the diameter of the support shaft, it is possible to achieve the effect of downsizing.

[Brief explanation of drawings]

1 to 10 show embodiments of the present invention, FIG. 1 is a plan view, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a sectional view of FIG. Figure 4 is an enlarged sectional view of Figure 1, Figure 5 is a bottom view of the runner, that is, a bottom view of Figure 2, Figure 6 is a sectional view of Figure 5, and Figure 7 is a sectional view of Figure 5. 8 is a bottom view of a runner in another embodiment, FIG. 9 is a sectional view of FIG. 8, FIG. 10 is a sectional view of FIG. 8, and FIG.
Figures to Figure 14 show things before the present invention,
Figure 11 is its plan view, Figure 12 is XII of Figure 11.
-XII cross-sectional view, Figure 13 is the same as Figure 11-
The sectional view and FIG. 14 are plan views showing the operating state. 1...Ceiling rail, 2...Main rail, 2'
...Branch rail, 4,4'...Runner receiving surface, 5...
...Runner, 6...Roller receiving plate, 6a, 6b, 6
c, 6d...Side edge of roller receiving plate, 7...Hanging shaft,
8a, 8b, 8c, 8d... Rotating roller, 9... Panel, 10... Support shaft, 11... Thrust bearing,
13...Bearing hole, B...Horizontal surface, 14a, 14
b, 14c, 14d, 14a', 14b', 14c',
14d'...Slanted surface, 15a, 15b, 15c, 1
5d, 15a', 15b', 15c', 15d'... Contact point of the rotating roller with the runner receiving surface, 16... Axis of the hanging shaft, 6e... Curved surface.

Claims (1)

[Scope of Claims] 1. A main rail and a branch rail each having a runner receiving plate bent inward at the lower end of both left and right vertical plates, and a partition panel that is suspended inside the main rail and branch rail. A partition panel hanging device consisting of a runner that runs freely in the longitudinal direction, a roller receiving plate in which the runner is formed into a rectangular shape in plan view, and a roller receiving plate that is fitted into the center of the roller receiving plate so as to be freely rotatable in the vertical direction. on the lower surface of each of the four corners of the roller receiving plate,
A movable suspension device for a movable panel, in which a rotating roller that contacts the upper surface of both runner receiving plates on both rails is arranged so that the rotating roller freely rotates around a vertical axis, A support shaft protruding upward from each of the rotating rollers is inserted into a bearing hole formed in the roller receiving plate so that it is rotatable and has a free movement so that the axis of the support shaft can be tilted in any direction. Fitted into each of the support shafts of each of the rotating rollers, a thrust bearing is provided between the rotating roller and the lower surface of the roller receiving plate for transmitting a vertically upward load on the rotating roller to the roller receiving plate; The thrust bearing is fitted so that the upper surface of the thrust bearing is in contact with the lower surface of the roller receiving plate, and furthermore, of the lower surface of the roller receiving plate, two rotating shafts are arranged one behind the other on the right side with respect to the running direction of the runner when viewed from above. A line connecting the centers of the rollers, a line connecting the centers of two rotating rollers lined up front and back on the left side with respect to the running direction of the runner, a line connecting the centers of two rotating rollers lined up left and right on the front side with respect to the running direction of the runner, On the rear side with respect to the running direction of the runner, there is a horizontal surface extending inward from each of the four side edges of the roller receiving plate on the outside of the line connecting the centers of the two rotating rollers arranged on the left and right on the rear side with respect to the running direction of the runner. While providing an inclined surface that slopes upward at an appropriate angle,
A movable hanging suspension for a movable panel, characterized in that a region of the lower surface of the roller receiving plate that is inside the inner end of the inclined surface is formed into a curved surface that is recessed upward from the inner end of the inclined surface. Device. 2. A patent characterized in that the point at which the lower surface of each of the rotating rollers contacts the upper surface of the runner receiving plate is located inside the four side edges of the roller receiving plate. A movable suspension device for a movable panel according to claim 1.