JP2926654B1 - Cross runner and roller unit for cross runner - Google Patents

Abstract

An object of the present invention is to provide a cross runner and a roller unit for the cross runner in which roller replacement is easy. SOLUTION: In a cross runner in which a plurality of rotatable rollers 2 are arranged in parallel in the axial direction of a support shaft 1, the plurality of rollers 2 are integrally and detachably attached to the support shaft 1. Means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cross runner used for a partition panel or the like.

[0002]

2. Description of the Related Art Conventionally, this kind of cross runner is shown in FIG.
As shown in the figure, a pair of rollers 72 is provided in the axial direction of the support shaft 71 via a ball bearing 73.
The support shaft 71 is formed with an annular flange portion 71a at an upper end and a male screw portion 71b at a lower side, and the ball bearing 73 is formed between an outer ring 74 on a rotating side and an inner ring 76 on a fixed side. A so-called radial bearing ball bearing in which a plurality of balls 75 are stored in a ring-shaped (vertical) gap between them. An inner peripheral surface of a roller 72 is attached to an outer peripheral surface of an outer ring 74, and an inner ring 76 is Become attached to.

Further, a cylindrical spacer 77 is provided on the support shaft 71 between the pair of upper and lower rollers 72, 72, and a fixing nut 78 is provided below the lower roller 72 on the support shaft 71. The upper roller 72 is screwed into the male screw portion 71b, and the inner roller 76 of the ball bearing 73 is sandwiched from above and below by the flange portion 71a of the support shaft 71 and the spacer 77, and the lower roller 72 is The inner ring 76 is vertically clamped by the fixing nut 78.

That is, the upper and lower rollers 72, 72 are spaced apart in the direction of the rotation center axis by the spacer 77, and are vertically sandwiched between the flange portion 71a of the support shaft 71 and the fixing nut 78, so that the height of each of them is increased. Maintained and fixed.

In such a cross runner, first, a ball bearing 73 is press-fitted into each roller 72, and then an upper roller 72, a spacer 77, and a lower roller 72 are sequentially sheathed on a support shaft 71, and finally, The positions of the upper and lower rollers 72 are determined by screwing and tightening the fixing nut 78. A nut 79 with a spring washer is screwed below the support shaft 71 for attaching the cross runner.

As shown in FIG. 9, a conventional cross runner having the above structure is provided with a support shaft 7 on a partition panel 60.
1 is screwed on the lower end side and inserted into the rail 51 for use. When the cross runner is mounted on the rail 51 in this way, the lower surfaces 72a of the pair of rollers 72, 72,
72a is the slope 5 of the projecting walls 52, 53 inside the rail 51.
2a and 53a are suspended in the rail 51, and the outer surface of the roller 72 is rotated while abutting on the inner wall 54 of the rail 51, thereby rotating the panel 60.
Can be moved along the longitudinal direction of the rail 51.

In such a state, the roller 72 is
The roller 72 is constantly receiving an upward force from the protruding walls 52, 53 because the roller 72 is in contact with the slopes 52a, 53a of the protruding walls 52, 53 to support the weight of the panel 60. Therefore,
Since the force acting on the roller 72 directly acts on the ball bearing 73, the ball bearing 73 supports the weight of the panel 60.

[0008]

As described above, this type of cross runner is composed of upper and lower slopes 52a, 5a of the rail 51.
Since the lower surfaces 72a of the rollers 72 abut against the roller 3a, the distance between the lower surfaces 72a of the rollers 72 is greatly related to the rotational load of the rollers 72. Since the distance between the lower surfaces 72a of the rollers 72 is determined only when the rollers 72, 72 are separated from each other and only when the rollers 72 are attached to the support shaft 71, if the distance is out of the set value after the assembly, And disassembling the roller 72, reassembling the roller 72, etc., and assembling it again, there is a problem that the workability of dimensional control is poor.

Further, even in the event that the rotation of the roller 72 is defective, the upper and lower rollers 72, 72 are individually
1, the rollers 72 into which the ball bearings 73 have been press-fitted need to be individually replaced and individually replaced, and disassembly and reassembly on site requires a great deal of labor and time. There was a problem.

As described above, in the conventional cross runner, since the upper and lower rollers 72, 72 are separated, repair and replacement when a defect occurs is very complicated. I had it.

The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to provide a cross runner and a roller unit for the cross runner in which rollers can be easily replaced.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a cross runner according to the present invention has a plurality of rotatable rollers 2 arranged in parallel in the axial direction of a support shaft 1. Cross runner, the plurality of rows
LA 2 is rotatably attached to the fixed part, respectively.
The fixing portion is detachably attached to the spindle 1.
As a result, the plurality of rollers 2 can be integrally attached to and detached from the support shaft 1.
The fixed part has a female screw part 1
7 is formed, and the through-hole 16 is formed in the through-hole 16.
The support shaft 1 is screwed, and the support shaft 1 has a through hole.
A guide portion 1a is provided to abut on an opening edge of the opening 16 .

In the cross runner according to the present invention,
Since the plurality of rollers 2 are integrally and detachably attached to the support shaft 1, if the distance between the assembled rollers 2 is out of a predetermined set value, the rollers 2 are integrated. Can be removed and replaced with another one,
Even in the event that the rotation of the roller 2 is poor at the site, only the plurality of rollers 2 can be integrally removed and replaced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 5, one embodiment of a cross runner according to the present invention is a pair of upper and lower rotatable rollers 2 along the axial direction of a bolt 1 (support shaft). The cross runner provided will be described.

In FIG. 1, a bolt 1 has one end (upper end)
Has a flange portion 1a (guide portion) on the other end side (lower end side)
The upper and lower pair of rollers 2 and 2 are integrally and removably attached to the bolt 1. Specifically, the upper and lower rollers 2, 2
Each of the fixed portions is rotatably mounted via a ball 3, and the fixed portion is removably mounted on a bolt 1. The fixed portion includes a support portion for supporting the roller 2 via the ball 3, And a connecting portion for connecting the upper and lower supporting portions in the axial direction.

As shown in FIG. 2, the roller 2 has a substantially cylindrical roller body 4 made of a synthetic resin having a tapered portion 4a above the outer peripheral surface, and protrudes from the inner peripheral surface of the roller body 4 in the center direction. An arcuate groove 5a is provided on the upper and lower surfaces of the ball receiver 5, and the ball 3 is engaged with the groove 5a.

As shown in FIG. 3, the balls 3 are rotatably mounted in a plurality of holes 7 of a donut-shaped ring plate 6, respectively.
Are integrated to form a ball unit 8. The ball unit 8 is provided in a pair above and below the ball receiving portion 5, and is vertically moved by the ball receiving portion 5 and the supporting portion (the rotation center of the roller 2). The ball 3 is pinched (in the axial direction).

The support portion has a groove 9a which engages with the ball 3.
And a pair of upper and lower support plates 9 and 9 having a circumference, and a cylindrical support sleeve 10 vertically sandwiched between the two support plates 9 and 9. A gap 11 in which the ball 3 is stored is formed in the radial direction between the support plate 9 and the support plate 9, and the support section supports the roller 2 by sandwiching the roller 2 from above and below via the ball 3. .

A connecting portion for connecting the pair of upper and lower supporting portions includes
As shown in FIG. 1 and FIG. 4, a cylindrical connecting spacer 1 provided between the two support portions to separate them by a predetermined distance.
2 and a connecting sleeve 13 sandwiching both supporting portions from above and below with upper and lower flange portions 14 and 15.
Is formed in a substantially cylindrical shape having a through hole 16 in which a female screw portion 17 is formed. The upper flange 14 of the connecting sleeve 13 is formed by caulking.

As described above, the upper and lower support portions are connected to each other by the connecting portion, so that the pair of rollers 2 and 2 are formed inseparably and integrally, and as shown in FIG. Thus, the roller unit 18 separated by a predetermined distance is configured. The bolt 1 is inserted into the through hole 16 of the connecting sleeve 13 of the roller unit 18, and the male screw 1 b of the bolt 1 is screwed into the female screw 17 of the connecting sleeve 13, as shown in FIG.
As shown in FIG. 2 and FIG.
The lower surface of the flange portion 1a of the bolt 1 is in contact with the end surface 14a of the bolt 4 (the opening edge of the through hole 16). That is, the collar 14
Is brought into contact with the flange portion 1a,
The height (position) of the roller unit 18 with respect to the bolt 1 is determined. The male thread portion 1b of the bolt 1 has
A nut 19 with a spring washer for attaching to the panel 60 is screwed.

The cross runner having such a configuration is assembled and manufactured as follows. That is, the support plate 9, the support sleeve 10, the ball unit 8, the roller 2, the ball unit 8, and the support plate 9 are sequentially packaged for the lower roller 2 on the connecting sleeve 13 having the flange 15 at the lower end, in order. Further, after the connecting spacer 12 is provided, the supporting plates 9 and 9 are similarly provided for the upper roller 2. Then, by crimping the upper end of the connection sleeve 13, the upper and lower rollers 2, 2 are connected and integrated to assemble the roller unit 18. In the assembling process, since the ball unit 8 in which the plurality of balls 3 are unitized is used, the balls 3 can be interposed very easily as compared with the case where the individual balls 3 are incorporated one by one.

Then, the assembled roller unit 1
After confirming the distance between the lower surfaces 2a of the rollers 2 in the state of 8, the bolt 1 is screwed in until the flange portion 1a contacts the flange portion 14 to assemble and manufacture a cross runner, and a spring washer is provided below the bolt 1. The attached nut 19 is screwed.

After the roller unit 18 is screwed into the bolt 1 by the above-mentioned manufacturing method to complete the cross runner, the cross runner can be attached to the panel 60 at the site as shown in FIG. By carrying several types of bolts 1 having different screw lengths of the portion 1b and the roller unit 18, a bolt 1 having a screw length suitable for the panel 60 is selected on site, and the roller unit 18 is mounted on the selected bolt 1. Can be mounted and used.

After attaching the cross runner to the panel 60 as shown in FIG.
1 so that the lower surface 2a of the roller 2 is
3 is brought into contact with the slopes 52a and 53a.

Next, the use state of the cross runner will be described. When the cross runner to which the panel 60 is attached is suspended on the rail 51, the weight of the panel 60 is increased by the upper and lower rollers 2, 2 via the bolt 1. Act on
The weight of the panel 60 is moved along the longitudinal direction of the rail 51 while the upper and lower rollers 2 support the weight of the panel 60. At this time, the rollers 2 are rotatably provided via the balls 3, respectively. , The roller 2 rotates smoothly with little rotational load.

Moreover, since the ball 3 is held in the direction of the rotation center axis of the roller 2, even if the lower surface 2a of the roller 2 receives a thrust force (force acting upward) from the inclined surfaces 52a, 53a, Since the ball 3 reliably receives the force, there is no possibility that the rotational load of the roller 2 increases, and smooth rotation is reliably ensured for a long period of time.

Further, a pair of upper and lower ball units 8 is provided for each of the rollers 2, and the rollers 2 are sandwiched from above and below by support plates 9, 9 via the upper and lower ball units 8, 8 and supported. Therefore, a more stable rotation can be obtained.

As described above, in the cross runner according to the present embodiment, the ball 3 can reliably support the thrust force acting on the roller 2, that is, the weight of the panel 60. Therefore, as in the conventional case (see FIG. 8), when the radial bearing ball bearing 73 is used,
If the heavy panel 60 is suspended with a small load resistance in the direction of the rotation center axis, the ball bearing 73 cannot withstand the weight of the panel 60, the rotational load of the roller 72 increases, and sometimes the roller 72 stops rotating. However, in this embodiment, since the ball 3 is sandwiched in the rotation center axis direction, the load resistance of the cross runner can be increased as compared with the radial bearing ball bearing 73, and This is advantageous in that stable rotation can be obtained for a long period of time.

The radial force (the force in the direction of the center of rotation) which the outer peripheral surface of the roller 2 receives from the inner walls 54, 54 of the rail 51 is the upper and lower grooves 5a, 9 with which the ball 3 is engaged.
a is formed in an arc shape, the groove 5
a, 9a can stop the ball 3 from moving in the radial direction and receive the radial force. Further, since the radial force is very small as compared to the thrust force, even if the ball 3 is held from above and below, the ball 3 can reliably receive the force and rotate stably. It is.

Further, even if the rotation of the roller 2 occurs in a state where the roller 2 is attached to the rail 51, the upper and lower rollers 2, 2 are connected and integrated. The roller 2 can be replaced very simply by simply removing the roller 2 from its own, and there is no need to disassemble all the parts and replace the individual rollers 2 as in the prior art.
There is an advantage that the workability of roller replacement can be greatly simplified.

In the present embodiment, the supporting portion for supporting the ball 3 is composed of the three supporting plates 9, 9 and the supporting sleeve 10. For example, as shown in FIG. It may be composed of a pair of upper and lower support members 21 and 21 having a substantially U-shaped dovetail groove 20 provided therearound. The ball 3 may be pinched in two directions (thrust direction and radial direction) by the ball receiving portion 5 provided in the above.

Further, in the above-described embodiment, the description has been given of the case where the supporting portion sandwiches the ball receiving portion 5 of the roller 2 with the ball 3 interposed therebetween. However, as shown in FIG. A configuration may be adopted in which the support portion 30 is sandwiched between the rollers 2 from above and below. However, as shown in the above-described embodiment, by adopting a configuration in which the support portion sandwiches the roller 2 up and down, as can be seen by comparing FIGS. 1, 6 and 7, a substantially upper half of the outer peripheral surface of the roller 2 is tapered. (Approximately 45
Can be easily cut, and as a result,
There is an effect that occurrence of abnormal noise or the like due to the corners of the outer peripheral surface of the roller 2 abutting against the inner walls 54, 54 of the rail 51 can be prevented.

In any case, by holding the ball 3 in the direction of the rotation center axis by the fixing portion and the roller 2,
Since the lower surface 2a of the roller 2 reliably receives the force that the lower surface 2a of the roller 2 receives from the protruding walls 52, 53 of the rail 51 in the upward direction, the roller 2 can rotate smoothly.

In the above embodiment, a pair of upper and lower gaps 11 in which the balls 3 are stored is described. However, the rollers 2 are rotatably supported with the balls 3 interposed at least in the lower gaps 11. Preferably, the lower surface 2 of the roller 2 when attached to the rail 51
The upward force acting on “a” can be received by the ball 3, and the roller 2 can be reliably and smoothly rotated in the use state (attached state).

As described above, the shape and configuration of the roller 2 and the supporting portion can be appropriately changed in design, and similarly, the shape of the connecting portion,
The configuration is not particularly limited. That is, the connection sleeve 13 may be formed in a shape other than the cylindrical shape, or may be formed integrally with the connection spacer 12.

The means for detachably attaching the roller unit 18 to the bolt 1 is not particularly limited, either.
Through hole 16 having female screw portion 17 as in the above embodiment
In addition to screwing the bolt 1 into the through hole, for example, a horizontal screw hole (a screw hole penetrating from the outer surface to the through hole 16 and formed in the lateral direction) is provided in the connecting portion,
The roller unit 18 may be detachably attached to the bolt 1 by inserting a screw into the lateral screw hole after the bolt 1 is inserted into the bolt 6, and other means, adhesive means, etc., may be changed as appropriate. It is possible.

However, by forming the through hole 16 having the female screw portion 17 in the fixing portion, the bolt 1 and the roller unit 18 can be assembled very easily, and the through hole is formed in the flange portion 1a of the bolt 1. The roller unit 18 can also be positioned by bringing the opening edge portions 16 into contact with each other.

In the above embodiment, the bolt 1 is used for the support shaft. However, the shape of the support shaft is not particularly limited, and the flange portion 1a as a guide portion is provided at a position other than the upper end. You may. However, by using a commercially available inexpensive bolt 1 for the support shaft, the cross runner itself can be manufactured at low cost, and various screw lengths can be easily obtained. There is also the advantage that it can be done.

Further, in the above embodiment, the roller 2 is rotatably provided on the fixed portion via the ball 3. However, the roller 2 acts on the roller 2 when the panel 60 is relatively lightweight. When the force in the thrust direction is relatively small, the radial bearing ball bearing 73 shown in FIG. 8 may be used, and a metal bearing may be used without using the ball 3. is there.

In the above-described embodiment, the roller unit 18 and the cross runner each provided with a pair of the rollers 2 have been described. However, the present invention does not limit the number of the rollers 2, and three or more rollers 2 are provided. Even if the roller 2 is provided integrally and detachably, it is within the range intended by the present invention.

[0041]

In the cross runner according to the present invention, since a plurality of rollers are integrally and detachably attached to the support shaft, the plurality of rollers are integrally removed when the rollers are replaced. Therefore, there is an effect that the workability of roller replacement can be remarkably improved as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a front view including a partial cross section showing a cross runner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a main part of the cross runner of one embodiment.

FIG. 3 shows a main part of the cross runner of one embodiment,
(A) is a sectional view, and (B) is a plan view.

FIG. 4 is a front view including a partial cross section showing a roller unit for a cross runner in one embodiment of the present invention.

FIG. 5 is a front view including a partial cross section showing a use state of the cross runner of the embodiment.

FIG. 6 is an essential part cross-sectional view showing a cross runner of another embodiment.

FIG. 7 is an essential part cross-sectional view showing a cross runner of another embodiment.

FIG. 8 is a front view including a partial cross section showing a conventional cross runner.

FIG. 9 is a front view including a partial cross section showing a usage state of a conventional cross runner.

[Explanation of symbols]

1 ... bolt (support shaft), 1a ... flange part (guide part),
2 ... roller, 3 ... ball, 11 ... gap, 16 ... through hole,
17 ... female screw part

Claims (6)

(57) [Claims] 1. A cross runner comprising a plurality of rotatable rollers (2) arranged side by side in the axial direction of a spindle (1).
The plurality of rollers (2) are rotatably mounted on a fixed portion.
The fixing part is attached to and detached from the support shaft (1).
The plurality of rollers
(2) is integrally and detachably attached to the support shaft (1).
The fixing portion has a female screw portion (17).
A through hole (16) is formed, and the support shaft is inserted into the through hole (16).
(1) is screwed, and the support shaft (1)
The guide portion (1a) abutting on the opening edge of the through hole (16) is
A cross runner characterized by being provided . 2. A rotatable roller (2) is provided on a support shaft (1).
In a cross runner that is arranged in parallel in the axial direction,
Wherein the plurality of rollers (2) is made mounted for each rotation to the fixed part, by Rukoto the fixing unit is detachably attached to the support shaft (1), said plurality of rollers
(2) is integrally and detachably attached to the support shaft (1).
The roller (2) is provided with a ball (3) on a fixed portion.
It is attached rotatably via
(3) is a roller by the roller (2) and the fixed part.
(2) characterized by being sandwiched in the direction of the rotation center axis.
Cross runner to be. 3. A through hole (16) having a female screw portion (17) is formed in the fixing portion.
6) The support shaft (1) is screwed into the support shaft (1), and the support shaft (1) is provided with a guide portion (1a) that comes into contact with the opening edge of the through hole (16). Item 14. A cross runner according to item 2. 4. A gap (1) in which said ball (3) is stored.
The cross runner according to claim 2 or 3, wherein 1) is provided as a pair of upper and lower parts. 5. A roller (2) holds a ball (3) on a fixed portion.
The roller (2) is provided rotatably through the center of rotation.
A plurality of them are spaced apart along the axial direction and
The fixing portion has a through hole (1) along the rotation center axis direction.
6) Cross runner characterized by being formed
Roller unit. 6. A female screw portion (1) is provided in said through hole (16).
The roller unit for a cross runner according to claim 5, wherein 7) is formed .