JPH04176983A - Sash roller and sliding door opening/closing device with sash roller thereof - Google Patents

Abstract

PURPOSE:To freely open or close a door at an optional position by providing multiple recessed grooves inside an outer ring, and providing a circular support plate with bearing members and a hooking clutch pressing the bearing members to the recessed grooves for hooking in both directions. CONSTITUTION:A sash roller 1 is constituted with an outer ring 2 forming a rail hooking groove, a support shaft 3 and a two-way hooking clutch 4. The clutch 4 is constituted of an outer tube material 41, a bearing 42, a bearing 43, and a pressing body 46 consisting of a pressing pin 44 and a holder 45, and the clutch 4 is located at the unhooked position during rotating movement. A through hole 42a penetrated by the support shaft 3 is bored on the bearing supporter 42, a recessed groove 42b formed with retreat grooves 42d, 43e are formed, the pressing body 46 is hooked by the pressing pressure, and the hooking is released when the torque is applied in the opposite direction. A sliding door can be fully opened, fully closed, or opened or closed at an optional position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a door roller and a sliding door opening/closing device using the door roller.

[Prior art and problems to be solved by the invention] Generally, sliding doors used as entrance doors or interior doors in houses, warehouses, etc. have a door roller attached to the top or bottom of the sliding door to facilitate opening and closing operations. There is something. This type of sliding door has a structure in which the sliding door is opened and closed by rotating the door roller on a rail provided along the opening and closing direction of the sliding door.

By the way, when a door roller is provided, the sliding door opens and closes smoothly, but for example, because the rail is slightly inclined, the sliding door may return to the closing direction even if it is opened. It may not be possible to leave it completely open. Conversely, it may not be possible to completely close the door.Furthermore, if you want to leave the sliding door slightly open, that is, if you want to stop it midway through the opening or closing operation, you can also use this option. On the other hand, the door roller naturally rotates to the final position of opening or closing.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to completely open or close a sliding door having a door roller, and also to be able to reliably open or close a sliding door at any position even in the middle of the opening or closing operation. To provide a sliding door opening/closing device using the door roller and a door roller capable of stopping the door roller.

[Means for Solving the Problems] In order to achieve the above object, the door roller of the present invention has an outer ring portion that engages with a rail provided along the opening/closing direction of the sliding door and rotates on the rail. , a door roller having at least one end fixed to an arbitrary part of the sliding door and a support shaft rotatably supporting the outer ring, the door roller having at least one end fixed to an arbitrary part of the sliding door, and a support shaft that rotatably supports the outer ring. an outer cylindrical body fixedly disposed on the inner periphery of the outer ring portion; and a plurality of concave grooves in the inner periphery; In some cases, a substantially annular support plate is formed such that its substantially center portion is shallowest with respect to the support shaft and its both sides are deep; a bearing member loaded into the groove; and a pressing means that constantly presses the support plate in the direction of the shallowest part of the groove, and when the outer ring part rotates in the opening direction or the closing direction of the sliding door, the bearing member moves into the recess. The bearing members are located on both sides of the shallowest part of the groove, and when a torque is applied in the opposite direction, the bearing member moves toward the shallowest part of the groove by the pressing means and is locked to the support shaft, while the opposite If more than a specified torque is applied in the direction,
It is characterized by having a bidirectional locking clutch provided so that the outer ring portion can be rotated again in the opposite direction when the lock is released.

Moreover, the sliding door opening/closing device of the present invention is configured to include the door roller and a rail that is inclined and arranged along the opening/closing direction of the sliding door and slightly descending toward the closing direction. It is characterized by

[Function] According to this door roller, during rotational movement, since the bidirectional locking clutch is in a non-latched state, the outer ring portion rotates freely with respect to the support shaft, and the sliding door is smoothly opened and closed.

On the other hand, when the sliding door is completely opened or closed, or when the sliding door is stopped midway through the opening or closing operation, the bidirectional locking clutch engages with the spindle and the rail is slightly inclined. However, there is no natural movement in the direction of inclination.

If a predetermined torque or more is applied to the sliding door in this state, the locked state by the bidirectional locking clutch is released and the sliding door moves in the opening or closing direction again.

On the other hand, according to a sliding door opening/closing device that combines the door roller and a rail that is inclined slightly downward toward the closing direction of the sliding door, it is possible to apply more than a predetermined torque in the closing direction. By releasing the locked state, the sliding door closes automatically without having to reach the final position of the closing operation.

[Example] Hereinafter, the present invention will be described in further detail based on an example shown in the drawings.

In the figure, reference numeral 1 denotes a door roller according to the present embodiment, which includes an outer ring portion 2, a support shaft 3, and a bidirectional locking clutch 4.

The outer ring portion 2 is formed into a substantially cylindrical shape, and a rail locking groove 2a is formed in the outer peripheral portion. Note that the rail locking groove 2a is formed according to the shape of the rail 11, and when the rail 11 has a substantially circular cross section as in this embodiment, a semicircular notch is formed. Further, if a groove corresponding to the width of the outer peripheral surface of the outer ring portion 2 is provided on the rail 11 side, it is not necessary to provide such a rail locking groove 2a.

At least one end 3a of the support shaft 3 is fixed to the upper or lower part of the sliding door 10, for example, by a bolt 9 via a metal fitting 8, and is inserted into the hollow part of the outer ring part 2. The outer ring portion 2 is rotatably supported with respect to the rail 11.

The bidirectional locking clutch 4 is fixed to the inner peripheral portion 2b of the outer ring portion 2 between the outer ring portion 2 and the support shaft 3, and the support shaft 3 is inserted into the through hole of the bidirectional locking clutch 4. It will be arranged as follows. Specifically, it has the structure shown in FIGS. 2 to 5.

That is, this two-way locking clutch 4 includes an outer cylindrical body 41 fixed to the inner circumferential portion of the outer ring portion 2 by an engagement pin 14.
, a bearing support plate (bearing support plate) 42 fixedly attached within the outer cylindrical body 41 , a needle bearing 43 held by the bearing support plate 42 , and a needle bearing 43 connected to the bearing support plate 42 . , a pressing bottle 44 that functions as a pressing means for the needle bearing 43 and constantly presses and urges the needle bearing 43 inward by a pressing body 46 made of an elastic member; and a pressing bottle for holding the pressing bottle 44. A holding plate 45.

As shown in the cross-sectional views of FIGS. 2 and 3, the bearing support plate 42 is formed into a substantially annular shape with a through hole 42a through which the support shaft 3 is inserted.
The support shaft 3 is installed at predetermined locations on the inner circumference of a, in this example, at three locations.
When inserted, the distance between the outer circumferential surface of the support shaft 3 and the bottom wall 42f is shortest at approximately the center and deeper on both sides, that is, the shallowest portion 42c is formed at approximately the center, and It is made of a thin plate material having a concave groove 42b (see FIG. 5(a)) which serves as retraction grooves 42d and 42e.

That is, as is clear from the operation diagram in FIG. 4 and FIG. 5(a), the groove 42b has a substantially elliptical shape, for example.
A groove bottom surface 42i formed by the bottom wall portion 42f is cut out so as to be parallel to a tangent to the outer circumferential surface of the support shaft 3, which faces the central portion thereof. Therefore, the groove 42b
Since the support shaft 3 is formed in a cylindrical shape, the distance between the outer circumferential surface of the support shaft 3 and the bottom wall portion 42f is the shortest in the groove 42b, forming the shallowest portion 42c. do.

As a result, the groove 42b forms two retreat grooves 42d and 42e, which are deeper than the shallowest part 42c, on both sides of the shallowest part 42c.

Further, as shown in FIG. 6, the groove 42b is formed with a wedge angle θ, that is, with a taper, so that the center portion of the groove bottom surface 42i slightly protrudes toward the support shaft 3. With such a configuration, the locking force at the shallowest portion 42c can be increased compared to the case described above, and the distance from the start of the locking force to the end of the locking force can be shortened by 9 hours. Has advantages. In any of the above cases, the depth of the shallowest portion 42c is formed to be slightly shorter than the diameter of the needle bearing 43. Further, the wall portion forming the groove 42b of the bearing support plate 42 has a substantially arcuate cutout portion 42h extending from the outer circumference toward the groove 42b.
, the bottom wall portion 42f of the shallowest portion 42c is formed to be the thinnest. In this embodiment, as described above, since the concave groove 42b is formed at the 31if position, a total of three needle bearings 43 are provided correspondingly.

Further, a predetermined number of bearing support plates 42 are disposed within the outer cylinder member 41. In this embodiment, as shown in FIG. 3, six bottles are stacked on each side of a press bottle holding plate 45 which will be described later.

As shown in FIGS. 4 and 5(b), the press bottle holding plate 45, like the bearing support plate 42, has an insertion hole 45a formed in its approximate center for inserting the support shaft 3. In addition, grooves are formed at appropriate locations on the inner periphery of the insertion hole 45a, in this embodiment, at three locations corresponding to the grooves 42a of the bearing support plate, slightly wider than the grooves 42a, and near both ends. A pressing bottle holding groove 45b having a horn-shaped notch 45C145d extending in the outer circumferential direction is formed.

As shown in FIG. 4, the pressing bottle holding plates 45 are arranged in a set of two, for example, with respective horn-shaped notches 45c.
, 45d to hold both ends of the press bottle 44, and
A pair of bearing support plates 4 arranged as a set
It is connected between 2. Therefore, the pressure bottle 44 holds each pressure bottle? 1145b, two pairs of them are arranged. The pressing band 46 is disposed so as to extend over all the pressing bottles 44 between the pair of pressing bottle holding plates 45, 45.

In addition, 49 is a locking bottle, and the bearing support plate 42,
It is arranged to be fixed to the outer cylindrical member 41 by being locked with a locking groove (not shown) formed at a suitable position on the outer circumference of the press bottle holding plate 45 .

Reference numeral 47 denotes a holding plate, and 48 a retaining ring, which are disposed near both ends of the outer cylindrical member 41 to fix the bearing support plate 42 and the like inside the outer cylindrical member 41.

Here, 5 is a bearing, and as shown in FIG.
It is loaded into the shaft opening of the 6 is a fixing ring for fixing the support shaft 3, and 7 is a washer.

Fig. 7 shows a sliding door opening/closing device using the above-mentioned door roller 1. The rail 11 is arranged at a slight inclination to the rail 11.

That is, by arranging the rails 11 at an angle,
The sliding door 10 is configured to be able to close automatically. Note that the type of rail 11 is not particularly limited. This is because, as described above, the door roller 1 can be selected from various types depending on the type of the rail 11, such as one having the groove portion 2a in the outer ring portion 2 as in this embodiment.

Further, as shown in FIG.
It is laid on a rail support member 14 fixed to. In this case, it goes without saying that the rail 11 and the rail support member 14 may be integrally molded.

Next, the operation of the door roller 1 of this embodiment having such a configuration and the sliding door opening/closing device using the door roller will be explained.

First, when the sliding door is opened, the door roller 1 rotates on the rail 11. At this time, if the bidirectional locking clutch 4 and the outer ring portion 2 are rotating in the direction A with respect to the support shaft 3 as shown in FIG. 4(a), each needle bearing 43
In each concave groove 42b of the support plate 42, one of the retraction grooves 42d (11!) presses one of the press bottles 44 toward the outer circumference of the press bottle holding plate 45 against the pressing force. That is, in this state, the bidirectional locking clutch 4 is in a non-latching state with respect to the support shaft 3.
It can freely rotate around the support shaft 3 together with the outer ring portion 2.

When the sliding door 10 is completely opened or the opening operation is stopped halfway, the rail 11 is inclined in the closing direction X.
A predetermined torque is applied in the closing direction X. Therefore, the outer ring portion 2 attempts to rotate in the direction B, contrary to the above. As a result, the needle bearing 43 is pressed by the pressing pin 44 and is moved in the direction A as shown in FIG. 4(b). Therefore, the needle bearing 43 reaches and locks the substantially central portion of the groove 42b, that is, the shallowest portion 42c, and the rotation of the outer ring portion 2 stops at this position. As a result, the sliding door 1O becomes open at the final open position or at an arbitrary position.

In this state, when operating the sliding door 10 in the closing direction X, it is necessary to apply enough torque to release the locked state of the needle bearing 43 at the shallowest portion 42c of the groove 42b. Therefore, even if an unexpected external force such as vibration is applied, the sliding door 10 will not close easily.

When a predetermined torque or more is applied in the closing direction, the needle bearing 43 is moved to its shallowest position by elastically expanding the thin bottom wall 42f of the bearing support plate 42, as shown in FIG. 4(C). It passes through the part 42c and is located in the other retraction groove part 42e, and the locked state to the support shaft 3 is released.

Since the rail 11 is arranged at an angle, the sliding door 10 automatically closes slowly in the closing direction X (
.

On the other hand, after the two-way locking clutch 4 is closed, if a slight torque is applied in the opening direction contrary to the above, the needle bearing 43 will be locked in the shallowest part 42c of the groove 42. A stopping force will be applied. therefore,
Even if an unexpected external force such as vibration is applied in the opening direction, the sliding door 1
0 will not open easily. In addition, when opening the sliding door against this stopping force, if a torque sufficient to release the stopping force is applied, the position of the needle bearing 43 moves to the position shown in FIG. 4(a), and the sliding door opens again. Needless to say, it can be operated in an open position.

The door hinge 1 of the present invention is not limited to the embodiments described above. For example, in the embodiments described above, the bearing support plate 42 and the press bottle holding plate 45 are used as thin plate-like ones as the bidirectional locking clutch 4. Although an example is shown in which a plurality of layers are stacked on top of each other, integrally molded structures may also be used. Further, although a combination of the pressing bottle 44 and the pressing band 46 is shown as the pressing means, a configuration in which the needle bearing 43 is pressed using a spring may also be used.

[Effects of the Invention] According to the door roller of the present invention and the sliding door using the door roller, since a bidirectional locking clutch is provided, there is a stopping force that prevents rotation in one direction from rotating in the other direction. can be demonstrated.

Therefore, the sliding door can be reliably stopped at the final opening or closing position, and can also be kept open at any position during the opening or closing operation. Moreover, in this case, even if an unexpected external force is applied, the sliding door will not easily rotate in the other direction and move.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the door roller according to the present invention;
Fig. 2 is a cross-sectional view showing the structure of the outer ring, spindle, and bidirectional locking clutch of the door roller, Fig. 3 is a longitudinal sectional view of the same, and Fig. 4 (a
) to (c) are explanatory diagrams of the operation of the bidirectional locking clutch, FIG. 5(a) is a plan view showing the main parts of the bearing support plate, and FIG. 5(b) is a plan view showing the main parts of the press bottle holding plate. 6 is a plan view showing essential parts of another example of the bearing support plate, and FIG. 7 is a front view showing an embodiment of the sliding door opening/closing device of the present invention. 1... Door roller 2... Outer ring portion 3... Support shaft 4... Bidirectional locking clutch 41... Outer cylinder body 42... ...Bearing support plate 43...Needle bearing 44...Press bottle 45...Press bottle holding plate 46...Press band 5... ...Bearing 8...Mounting with metal fittings 10...Sliding door 11...Rail agent/patent attorney 2,000 1) Minoru Figure 3 Figure 4 (C) 2b Figure 6

Claims (2)

[Claims] (1) An outer ring that engages with a rail provided along the opening/closing direction of the sliding door and moves while rotating on the rail, and at least one end of the outer ring that is fixed to an arbitrary location on the sliding door. A door roller having a support shaft that rotatably supports the outer ring part and the support shaft, the outer cylinder body being fixed to the inner peripheral part of the outer ring part and between the outer ring part and the support shaft. It is loaded into the body, and has a plurality of grooves on the inner circumference, and when the spindle is inserted into the grooves, the substantially central part thereof is shallowest relative to the spindle, and the grooves are deep on both sides. a substantially annular support plate formed to
It has a bearing member loaded into the groove, and a pressing means that constantly presses the bearing member in the direction of the shallowest part of the groove of the support plate, and the outer ring portion When rotating in the direction of formation, the bearing members are located on both sides of the shallowest part of the groove, and when torque is applied in the opposite direction, the bearing member is moved by the pressing means to the shallowest part of the groove. The outer ring is moved in the opposite direction and is locked to the support shaft, but when a torque of more than a predetermined value is applied in the opposite direction, the lock is released and the outer ring can rotate again in the opposite direction. A door wheel characterized by having a bidirectional locking clutch. (2) The door roller according to claim 1, and a rail that is inclined and arranged along the opening/closing direction of the sliding door and slightly descending toward the closing direction. Features a sliding door opening/closing device.