JPH041256Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention allows a movable panel for partitioning, etc. to be suspended from a ceiling rail installed on the ceiling of a room and moved along its length. The present invention relates to the structure of a suspension device for achieving this.

[Conventional technology]

This type of suspension device for a moving panel generally has a ceiling rail with a downwardly opening C-shaped cross section formed by forming a pair of left and right flanges at its lower end with a guide passage in between. , by inserting and inserting a suspension support into the movable panel, and providing the suspension support with a vertical support shaft extending downward through the guide passage and a rotating roller that comes into contact with the flange of the ceiling rail, the suspension support is installed. It is well known that bodies are configured to run inside a ceiling rail along its length.

As described in Japanese Utility Model Application Publication No. 53-658 as a prior art and as shown in FIG.
is formed into an inclined flange facing diagonally downward toward the guide passage 21, and a rotating roller 24 is fitted onto a fixed shaft 23 projecting downward from the hanging support 22 so as to be horizontally rotatable. The lower end surface of the outer peripheral edge is brought into contact with the inclined flange 20a.

[The problem that the idea aims to solve]

If each rotating roller 24 is configured to rotate around a vertical axis as in this prior art, when a plurality of ceiling rails 20 are connected in a criss-cross or T-shape state when viewed from above. Even if the movable panel P can be moved from one ceiling rail 20 that crosses each other to the other ceiling rail 20, the flange of the ceiling rail 20 can be tilted diagonally downward toward the guide path. If the slanted flange 20a is formed, the rotating rollers 24 come into point contact with both the left and right slanted flanges 20a, reducing frictional resistance.
4 can be rotated smoothly.

However, on the other hand, as in the prior art, the rotating roller 24 is rotatably attached to the fixed shaft 23 that projects downward from the lower surface of the suspension support 22, and the lower end surface of the outer peripheral edge of the rotating roller 24 is rotated. In the configuration in which the rotating roller 24 is in contact with the inclined flange 20a, the outer peripheral edge of the rotating roller 24 becomes a free end, so that the load F of the movable panel P suspends the portion of the rotating roller 24 that is away from the guide path 21. The rotating roller 24 acts to move the portion of the rotating roller 24 close to the guide passage 21 away from the lower surface of the hanging support 22 by bringing it closer to the lower surface of the support 22. In other words, the load F of the movable panel P bends the fixed shaft 23. As a result, the rotating rollers 24 and the fixed shaft 23 are in strong contact with each other at specific locations along the circumferential direction, and the rotating rollers 24 are partially worn out at the locations where they are in strong contact. There was a problem that the durability was low.

The object of the present invention is to provide a suspension device that significantly improves the durability of a rotating roller.

[Means to solve the problem]

In order to achieve this object, the present invention provides a hollow ceiling rail having a guide passage extending along the longitudinal center line on the lower surface, and a guide passage extending diagonally toward the guide passage on both sides of the opening passage. A pair of left and right inclined flanges extending downward is formed, a suspension support for the movable panel is inserted into the inside of the ceiling rail, and a vertical support shaft to which the movable panel is attached is connected to the suspension support through the guide path. rotating rollers that are in contact with the left and right inclined flanges are attached to portions of the suspension support located on both left and right sides of the vertical support shaft, and are rotatable around a vertical axis; In the movable panel suspension device provided, an annular sliding portion that contacts the inclined flange is formed on the lower end surface of each of the rotating rollers, and each rotating roller receives an upward load from the rotating roller. A ball thrust bearing supported on the lower surface of the suspension support is provided, and among the balls in the ball thrust bearing, the ball located at the farthest left and right outer side from the guide passage is connected to the annular sliding part of the rotating roller. The structure is such that it is located at a position further away from the guide passage to the left and right outer sides than the point of contact with the inclined flange.

[Action and effect]

With this configuration, the upward force that the rotating roller receives from the inclined flange, in other words, the load of the moving panel that acts on the rotating roller, is applied to a location inside the radius of the circle connecting the centers of each ball in the ball thrust bearing. Therefore, the load of the moving panel can be supported almost equally by each ball in the ball thrust bearing, and since no bending force is applied to the rotating shaft of the rotating roller, the rotating roller and suspension support are It is possible to reliably prevent the uneven wear phenomenon where the fitting parts of the parts wear out partially.

Therefore, according to the present invention, the load of the moving panel is
Each ball in the ball thrust bearing can be supported almost equally, and the phenomenon of uneven wear at the fitting part between the rotating roller and the hanging support can be reliably prevented, which has the effect of significantly improving the durability of the rotating roller. .

〔Example〕

Next, an embodiment of the present invention will be described based on the drawings. In the drawings, reference numeral 1 indicates a hollow ceiling rail, and reference numeral 2 indicates a runner fitted inside the ceiling rail 1. 1 has a pair of left and right inclined flanges 6a, 6b connected to the lower ends of its left and right side plates 5a, 5b, which extend diagonally downward toward the guide passage 7.

Note that, as shown in FIGS. 4 and 5, two ceiling rails 1 are connected in a cross shape in a plan view to form an intersection X1.

The runner 2 is equipped with a suspension support 8 formed into a substantially square shape in plan view, and a vertical support shaft 3 hanging from the guide passage 7 is welded 11 approximately at the center of the suspension support 8 in plan view. The movable panel 4 is suspended via the vertical support shaft 3, and four horizontal rotating rollers 10a are attached to the lower surface of the four corners of the suspension support 8 via ball thrust bearings 9. ,10
b, 10c, 10d, and two rotating rollers 10a, 10b, 10c, 10d on the left and right are brought into contact with the inclined flanges 6a, 6b, so that the runner 2 moves inside the ceiling rail 1 along its longitudinal direction. It is configured so that it can run freely.

Each of the rotating rollers 10a, 10b, 10c, 10
d has its upward rotating shaft 12 rotatably attached to the suspension support 8 via a sliding bush 13, and each rotating roller 10a, 10b, 10c, 10d
A downwardly protruding annular sliding portion 14 is integrally formed on the lower surface of the holder. The annular sliding part 14 is
As shown in FIG. 3, each rotating roller 10a, 10
A tapered surface 15 that slopes downward and radially inward from the outer circumferential side surface of b, 10c, and 10d, and a downwardly convex curved contact portion 1 that continues to the lower end of the tapered surface 15.
6, and the contact portion 16 is configured to contact the inclined flanges 6a and 6b.

On the other hand, the ball thrust bearing 9 is formed by disposing an appropriate number of balls 9a along the circumferential direction between a pair of upper and lower ring-shaped retainers. Ball 9a located far from 7,
It is located closer to the outside of the ceiling rail 1 than the contact portion 16 of the annular sliding portion 14 .

That is, the horizontal distance l1 between the load contact point A where the abutment part 16 of the annular sliding part 14 contacts the left and right bottom plates 6a, 6b of the ceiling rail 1 and the axis 17 of the vertical support shaft 3 is , the distance l2 between the ball 9a located on the left and right outermost sides of the guide passage 7 among the balls 9a in the ball thrust bearing 9 and the axis 17 of the vertical support shaft 3 is set to be large. Reference numeral 18 is the axis of the rotating roller 10a.

With this configuration, the rotating rollers 10a, 10
The load of the movable panel 4 acting on the balls 9b, 10c, and 10d acts as an upward pressing force at a location inside the radius of the circle connecting the centers of the balls 9a in the ball thrust bearing 9, so that the slanted flanges 6a, The support reaction force (load of moving panel 4) received from 6b is equally supported by each ball 9a in each ball thrust bearing 9, and
No bending force is applied to the rotating shaft 12, and the rotating shaft 12 and the bush 13 are not worn one-sidedly. Therefore, the rotating rollers 10a, 10b, 1
The durability at 0c and 10d can be significantly improved.

Note that when the ceiling rails 1 having the inclined flanges 6a and 6b intersect in a cross shape in a plan view, when the runner 2 passes through the intersection X1 of the ceiling rail 1, the rotating rollers 10a, 10b, 10c, 10
d once descends to the lower edge of the inclined flanges 6a, 6b, and then transfers to the inclined flanges 6a, 6b located on the opposite side of the guide passage 7,
The annular sliding portion 1 moves upward again along the inclined flanges 6a and 6b.
The contact point A between 4 and the inclined flanges 6a and 6b is
The closer the ceiling rail 1 is to the side plates 5a and 5b, the greater the difference in height between the contact point A and the guide path 7 becomes, impairing the smooth mobility of the movable panel 4 at the intersection X1 of the ceiling rail 1. However, in the present invention, the rotating rollers 10a, 10b, 10
By positioning the annular sliding portion 14 at c and 10d closer to the guide passage 7 than before,
Since the height difference in which the runner 2 moves up and down at the intersection of the ceiling rails 1 is smaller than that of the conventional method, there is an advantage that the runner 2 can be smoothly passed through the intersection of the ceiling rails 1.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view showing the main parts of the present invention and shows the ceiling rail with imaginary lines; FIG. 2 is a - perspective view of FIG. 1; Fig. 3 is an enlarged cross-sectional view of the main part of the rotating roller, Fig. 4 is a view showing the suspended state of the movable panel at the intersection of the ceiling rails, Fig. 5 is a plan view from the - side of Fig. 4, and Fig. 6 The figure shows a conventional example. DESCRIPTION OF SYMBOLS 1... Moving panel, 2... Runner, 3... Vertical support shaft, 4... Moving panel, 6a, 6b... Inclined flange, 7... Guide passage, 8... Hanging support, 9
... Ball thrust bearing, 9a ... Ball, 10
a, 10b, 10c, 10d...Rotating roller, 12
... Rotating shaft, 13 ... Sliding bush, 14 ... Annular sliding portion, 15 ... Tapered surface, 16 ... Contact portion.

Claims (1)

[Scope of utility model registration request] A pair of left and right inclined flanges extending obliquely downward toward the guide passage are formed on both left and right sides of the hollow ceiling rail having a guide passage extending along the longitudinal centerline on the lower surface of the rail. A suspension support for the movable panel is inserted into the ceiling rail, and a vertical support shaft to which the movable panel is attached is suspended from the suspension support via the guide passage, and In a suspension device for a moving panel, rotating rollers that abut the left and right inclined flanges are provided at portions located on both left and right sides of the vertical support shaft so as to be rotatable around a vertical axis, An annular sliding portion that contacts the inclined flange is formed on the lower end surface of each of the rotating rollers, and each rotating roller has a ball thrust that supports the upward load caused by the rotating roller on the lower surface of the hanging support. A bearing is provided, and among the balls in the ball thrust bearing, the ball located at the farthest left and right outer side from the guide passage is moved from the point of contact between the annular sliding part and the inclined flange of the rotating roller to the guide. A suspension device for a movable panel, characterized in that it is located at a location away from a passage on the left and right sides.