JPH0692712B2 - Door car and sliding door opening and closing device using the door car - Google Patents

Description

The present invention relates to a door roller and a sliding door opening / closing device using the door roller.

[Problems to be Solved by the Related Art and Invention] In a sliding door generally used as a front door or an indoor door in a house, a warehouse, etc., a door roller is attached to an upper portion or a lower portion of the sliding door for smooth opening / closing operation. There is something. This type of sliding door has a structure in which the sliding door is opened and closed by the door roller rotating on a rail provided along the opening and closing direction of the sliding door.

By the way, if a door roller is provided, the opening and closing operation of the sliding door will be smooth, but, for example, due to the rail being slightly inclined, it will return to the closing direction even if the sliding door is opened. It may not be possible to keep it completely open. On the contrary, in some cases, it cannot be completely closed. Further, when the sliding door is slightly opened, that is, when the sliding door is stopped in the middle of the opening or closing operation, on the contrary, the door roller naturally rotates and moves to the final position of opening or closing.

The present invention has been made to solve the above-mentioned problems, and it is possible to completely perform the opening or closing operation of a sliding door having a door roller, and to reliably perform the operation at any position even in the middle of the opening or closing operation. It is an object of the present invention to provide a door roller that can be stopped at any position and a sliding door opening / closing device using the door roller.

[Means for Solving the Problems] In order to achieve the above object, a door roller of the present invention is provided with an outer ring portion that engages with a rail provided along the opening / closing direction of a sliding door and moves while rotating on the rail. A door roller having at least one end fixed to an arbitrary portion of the sliding door and supporting the outer ring rotatably, and a door roller between the outer ring and the shaft. It is fixedly arranged on the inner peripheral portion of the outer ring portion, is mounted in the outer cylindrical body and the outer cylindrical body, and has a plurality of concave grooves on the inner peripheral portion, and the concave grooves allow the spindle to be inserted. Occasionally, a substantially annular support plate is formed so that its center portion becomes the shallowest and both sides become deep with respect to the support shaft, a bearing member loaded in the groove, and the bearing member. The outer ring part has a sliding door openable, and a pressing means for constantly pressing and urging the plate in the direction of the shallowest part of the groove. When the bearing member is positioned on both sides of the shallowest portion of the groove when the bearing member is rotationally moved in the closing direction or the closing direction, torque is applied in the opposite direction, so that the bearing member is pressed by the pressing means. While moving toward the shallowest part of the shaft and being locked to the support shaft, when a torque of a predetermined value or more is applied in the opposite direction, the locking is released and the outer ring part can again rotate and move in the opposite direction. It is characterized in that it has a bidirectional locking clutch that is provided as described above.

Further, the sliding door opening / closing device of the present invention is configured to have the door roller and a rail arranged along the opening / closing direction of the sliding door and inclined so as to slightly descend toward the closing direction. It is characterized by

[Operation] According to this door roller, since the bidirectional locking clutch is in the non-locking state during the rotational movement, the outer ring portion freely rotates 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 in the middle of the opening or closing operation, the bidirectional locking clutch locks on the support shaft and the rail is slightly inclined. However, there is no natural movement in the direction of inclination.

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

On the other hand, according to the sliding door opening / closing device in which the door roller and the rail arranged so as to be inclined so as to slightly descend toward the closing direction of the sliding door are combined, a predetermined torque or more is applied in the closing direction. By releasing the locked state, the sliding door automatically closes without touching the final position of the closing operation.

[Embodiment] The present invention will be described below in more detail based on an embodiment shown in the drawings.

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

The outer ring portion 2 is formed in a substantially cylindrical shape, and a rail locking groove 2a is formed in the outer peripheral portion. The rail locking groove 2a is
The rail 11 is formed according to the shape of the rail 11. When the rail 11 has a substantially circular cross section as in this embodiment, the rail 11 has a semicircular cutout. 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 part or the lower part of the sliding door 10 by, for example, a bolt 9 via a mounting member 8 and is inserted into the hollow part of the outer ring part 2 to be disposed. The outer ring portion 2 is rotatably supported on 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 pivot shaft 3 is inserted into the through hole of the bidirectional locking clutch 4. Is arranged. Specifically, it has the structure shown in FIGS.

That is, the bidirectional locking clutch 4 includes an outer cylindrical body 41 fixed to the inner peripheral portion of the outer ring portion 2 by the engagement pin 14,
A bearing support plate (bearing support plate) 42 fixedly mounted in the outer cylindrical body 41, and the bearing support plate 42.
The needle bearing 43 held by the needle bearing 43 is continuously provided with the bearing support plate 42, and functions as a pressing means of the needle bearing 43. Urging push pin
44 and a pressing pin holding plate 45 for holding the pressing pin 44
And are configured.

As shown in the sectional views of FIGS. 2 and 3, the bearing support plate 42 is formed in a substantially annular shape having a through hole 42a for inserting the support shaft 3, and the through hole 42a. When the support shaft 3 is inserted at three predetermined positions on the inner periphery of the support shaft 3 in this embodiment, the distance between the outer peripheral surface of the support shaft 3 and the bottom wall portion 42f is shortest in the substantially central portion, and both sides thereof are deep. That is, it is made of a thin plate material having a recessed groove 42b (see FIG. 5 (a)) in which a shallowest portion 42c is formed substantially at the center and both sides thereof are retreat groove portions 42d and 42e.

That is, the concave groove 42b is formed in the operation diagram of FIG.
As is clear from FIG. (A), for example, the groove bottom surface 42i formed by the bottom wall portion 42f is substantially oval, and is parallel to the tangent line of the outer peripheral surface of the support shaft 3 which faces the center portion thereof. The notch is formed so that Therefore, since the support shaft 3 is formed in a cylindrical shape in the substantially central portion of the recessed groove 42b, the distance between the outer peripheral surface of the support shaft 3 and the bottom wall portion 42f is the shortest in the recessed groove 42b. The shallowest part 42c is formed.

As a result, the recessed groove 42b has two evacuation groove portions 42d, 4 which are deeper than the shallowest portion 42c on both sides of the shallowest portion 42c.
2e will be formed.

Further, as shown in FIG. 6, the concave groove 42b is formed in the groove bottom surface 42i.
The wedge angle θ may be formed so that the central part of the projection slightly protrudes toward the support shaft 3 side, that is, the wedge angle may be tapered. With such a configuration, the locking force at the shallowest portion 42c can be increased as compared with the case described above, and the distance and time from the beginning to the end of the locking force can be shortened. 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. Also, the bearing support plate 42
The wall portion forming the concave groove 42b of the concave groove 4b
Since the substantially arcuate cutting portion 42h is formed toward 2b, 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 grooves 42b are formed at three places, the needle bearings 43 are provided correspondingly to three in total.

Further, a predetermined number of the bearing support plates 42 are arranged inside the outer cylinder member 41. In this embodiment, as shown in FIG.
Six pressing plates are arranged on both sides of the pressing pin holding plate 45, which will be described later.

As shown in FIGS. 4 and 5 (b), the pressing pin holding plate 45 has an insertion hole 45a for inserting the support shaft 3 in the substantially central portion thereof, like the bearing support plate 42. In addition, in the inner periphery of the insertion hole 45a, in this embodiment, at three positions corresponding to the groove 42a of the bearing support plate, the groove 42a.
The pressing pin holding groove 4 is formed to be slightly wider than that and has two notches 45c and 45d extending in the outer peripheral direction near both ends.
5b is formed.

As shown in FIG. 4, the pressing pin holding plates 45 are, for example, a set of two, and each one of the notch portions 45c, 45d.
Both ends of the pressing pin 44 are held and are continuously provided between a pair of bearing support plates 42 arranged as a set of the above six plates. Therefore, the pressing pin 44 is set in each pressing pin holding groove 45.
Two pairs will be provided for b. The pressing band 46 is arranged so as to be stretched over all the pressing pins 44 between the pair of pressing pin holding plates 45, 45.

Reference numeral 49 is a locking pin, which is arranged for locking with a locking groove (not shown) formed in a proper place on the outer peripheral portion of the bearing support plate 42 and the pressing pin holding plate 45 so as to be fixed to the outer cylinder member 41. Set up.

Reference numeral 47 is a holding plate, and 48 is a retaining ring, which are arranged near both ends of the outer tubular member 41, and the bearing support plates 42 and the like are attached to the outer tubular member 41.
It is fixed inside.

Here, reference numeral 5 is a bearing bearing, and as shown in FIG. 1, is mounted around the shaft body of the support shaft 3 so as to sandwich the bidirectional locking clutch 4 therebetween. 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 door roller 1. The door door 1 and the door door 1 are gradually lowered along the opening / closing direction of the sliding door and in the closing direction (arrow X direction). And a rail 11 arranged at a slight inclination.

That is, the sliding door 10 can be automatically closed by arranging the rails 11 in an inclined manner.
The type of rail 11 is not particularly limited.
As mentioned above, the door roller 1 is
This is because it is possible to select various types such as the one having the groove portion 2a in the outer ring portion 2 as in the present embodiment.

Further, as shown in FIG. 1, the rail 11 is formed in a substantially T shape, and is laid on a rail support member 14 in which a base portion 14a is fixed to a wall 13 by a bolt 12. In this case, it goes without saying that the rail 11 and the rail support member 14 integrally formed may be used.

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

First, when the sliding door is opened, the door roller 1 rotationally moves on the rail 11. At this time, if it is assumed that the bidirectional locking clutch 4 is rotating together with the outer ring portion 2 in the A direction with respect to the support shaft 3, as shown in FIG.
Each of the recessed grooves 42b of the support plate 42 is located in one of the retreat groove portions 42d and presses one pressing pin 44 in the outer peripheral direction of the pressing pin holding plate 45 against the pressing force. That is, in this state, the bidirectional locking clutch 4 is in the non-locking state with respect to the support shaft 3, and therefore can freely rotate around the support shaft 3 together with the outer ring portion 2.

When the sliding door 10 is completely opened or when the opening operation is stopped halfway, a predetermined torque is applied in the closing direction X because the rail 11 is inclined in the closing direction X. Therefore, the outer ring portion 2 tries to rotate in the B direction, contrary to the above. As a result, the needle bearing 43 is pressed by the pressing pin 44 and moved in the A direction as shown in FIG. 4 (b). Therefore, the needle bearing 43 has the groove 42b.
The outer ring portion 2 stops rotating at a substantially central portion, that is, the shallowest portion 42c. As a result, the sliding door 10 is in a state of being opened at the final point of the opening position or an arbitrary position.

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

When a predetermined torque or more is applied in the closing direction, the needle bearing 43 is positioned at the shallowest position by elastically expanding the thin bottom wall 42f of the bearing support plate 42 as shown in FIG. 4 (c). After passing through the portion 42c and being positioned in the other retracting groove portion 42e, the locked state with the support shaft 3 is released.

And, since the rail 11 is arranged so as to be inclined,
The sliding door 10 slowly and automatically closes in the closing direction X.

On the other hand, after closing, the bidirectional locking clutch 4 causes the needle bearing 43 to lock to the shallowest portion 42c of the concave groove 42 by only applying a slight torque in the opening direction, which is the reverse of the above. Stopping force will work. Therefore, even if an unexpected external force such as vibration is applied in the opening direction, the sliding door 10 will not be easily opened. When the sliding door is opened against this stopping force, the needle bearing 43 is moved to the position shown in FIG. 4 (a) by applying a torque to release the stopping force. It goes without saying that it can be opened.

The door hinge 1 of the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the bidirectional locking clutch 4 is an example in which a plurality of bearing supporting plates 42 and pressing pin holding plates 45 are stacked and used as thin plates. You may use what was done. Further, as the pressing means, the one in which the pressing pin 44 and the pressing band 46 are combined is shown, but it is also possible to use a spring to press the needle bearing 43.

[Effects of the Invention] According to the door roller of the present invention and the sliding door using the door roller, since the bidirectional locking clutch is provided, the stopping force that blocks the rotation to the other with respect to the rotational force of either one. Can be demonstrated.

Therefore, the sliding door can be securely stopped at the final position of opening or closing, and can be locked in an open state at any position even in the middle of the opening or closing operation. Moreover, in this case, even if an inadvertent external force is applied, the sliding door is not easily rotated in the other direction and moved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a door roller according to the present invention,
2 is a transverse sectional view showing the structure of the outer ring portion of the door roller, the support shaft and the bidirectional locking clutch, FIG. 3 is a longitudinal sectional view of the same, and FIGS. 4 (a) to 4 (c) are the bidirectional locking clutch operations. Explanatory drawing, FIG. 5 (a) is a plan view showing a main part of the bearing support plate, FIG. 5 (b) is a plan view showing a main part of the pressing pin holding plate, and FIG.
FIG. 7 is a plan view showing a main part of another example of the bearing support plate, FIG. 7 is a front view showing an embodiment of a sliding door opening / closing device of the present invention,
Is. 1 …… Door 2 …… Outer ring part 3 …… Spindle 4 …… Bidirectional locking clutch 41 …… Outer cylinder 42 …… Bearing support plate 43 …… Needle bearing 44 …… Pressing pin 45 …… Pressing pin holding plate 46 …… Pressing band 5 …… Bearing Bearing 8 …… Mounting bracket 10 …… Sliding door 11 …… Rail

Claims (2)

[Claims] 1. An outer ring part that engages with a rail provided along the opening / closing direction of a sliding door and moves while rotating on the rail.
A door roller having at least one end fixed to an arbitrary portion of a sliding door and a support shaft for rotatably supporting the outer ring portion, wherein the door wheel is provided between the outer ring portion and the support shaft. When the outer cylinder is fixedly disposed on the inner circumference and is loaded in the outer cylinder and the inner cylinder has a plurality of concave grooves, and the concave grooves allow the spindle to be inserted therethrough. A substantially annular support plate formed such that its substantially central portion is shallowest and both sides thereof are deep with respect to the support shaft,
The bearing includes a bearing member loaded in the groove, and a pressing means for constantly pressing the bearing member toward the shallowest portion of the groove of the support plate, and the outer ring portion is in the opening direction or the closing direction of the sliding door. When the bearing member is positioned on both sides of the shallowest portion of the groove when rotating in the normal direction and torque is applied in the opposite direction, the bearing member is pushed by the pressing means to the shallowest portion of the groove. It is provided so that the outer ring portion can be rotated and moved again in the opposite direction while being moved in the direction of the direction to be locked to the support shaft, and when a torque larger than a predetermined value is applied in the opposite direction, the locking is released again. A door roller having a bidirectional locking clutch formed by: 2. The door roller according to claim 1, and a rail arranged so as to be inclined along the opening / closing direction of the sliding door and slightly descending toward the closing direction. A sliding door opening / closing device characterized in that