JP2014152461A - Sash roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sash roller for a sliding door capable of preventing the sliding door from being opened and closed with vigor.SOLUTION: A rolling roller 24 capable of rolling along a rail is supported by a facing pair of side plates 18 provided in an inner housing 12 of a housing 10, and a braking roller 27 is provided on one side of the rolling roller 24, and a stopper pin 28 is provided on an upper side thereof. When a sliding door D slidably supported by a sash roller is opened and closed with vigor, the braking roller 27 is made to revolve while rotating by the contact with the rolling roller 24 so as to be brought into contact with the stopper pin 28, and rotational resistance is imparted to the braking roller 27 by the contact with the stopper pin 28, and vigor of the sliding door D is decreased with using the rotational resistance imparted to the rolling roller 24 from the braking roller 27 as brake force.

Description

  The present invention relates to a sliding door door for opening and closing a doorway of a building or the like.

  The entrances and exits in school classrooms are often opened and closed by sliding doors. In this case, in order for a small child to easily open and close the sliding door, a door is attached to the lower surface of the sliding door, and the door is opened and closed by rolling along the rail laid on the floor of the doorway. The method is generally adopted.

  As a sliding door for a sliding door, one described in Patent Document 1 has been conventionally known. In the door wheel described in Patent Document 1, an inner housing having a pair of side plates opposed to each other is incorporated in a rectangular tube outer housing embedded in a lower surface of a sliding door and screwed, so that the inner housing can be swung. A pair of side plates rotatably support a roller that can roll along the rail, and the height of the roller is adjusted by swinging the inner housing by screwing an adjusting screw screwed into the end plate of the outer housing. I have to.

JP 2000-160916 A

  By the way, in the conventionally known door cart, since the sliding door is slid by the rolling of the roller along the rail, the sliding door can be opened and closed with a small operating force, but a large operating force was given. In such a case, the sliding door may open and close vigorously and impactively collide with the door-to-door frame of the frame to generate a large impact sound or damage the frame or the sliding door.

  An object of the present invention is to provide a door for a sliding door that can prevent the sliding door from opening and closing vigorously.

  In order to solve the above problems, in the present invention, a housing attached to a sliding door, a roller shaft supported at both ends by a pair of opposed side plates provided in the housing, and rotating about the roller shaft In a door roller having a possible rolling roller, a braking roller is provided on at least one side of both sides of the outer periphery of the rolling roller, and a stopper supported by the pair of opposed side plates above the braking roller. A member is provided between the rolling roller and a space smaller than the outer diameter of the braking roller. The pair of opposing side plates in the housing are provided with the braking roller between the opposing portions of the rolling roller and the stopper member. In the state where the guide roller is guided to the upper and lower ends of the guide groove and the brake roller is guided to the rolling It had adopted a configuration in which the curved shape is held in contact with the outer periphery of the roller.

  In the door wheel having the above structure, in the door wheel in which the braking roller is provided only on one side of the rolling roller, each of the door end side end portion and the door bottom side end portion on the lower surface of the sliding door is a pair. Install to. In this case, the pair of door pulleys are mounted so that the directions are opposite to each other so as to be symmetrical.

  On the other hand, in a door roller in which braking rollers are provided on both sides of the rolling roller, the door roller and the door wheel generally known in the art are combined, and one door wheel is connected to the door end on the lower surface of the sliding door. The other door is attached to the door end.

  When the sliding door is opened and closed as described above, when the sliding door is opened and closed, the rolling roller rolls along the rail, and the braking roller rotates by contact with the rolling roller.

  At this time, when the operating force applied to the sliding door is small and the momentum of the sliding door to be opened and closed is low, the rolling roller rotates at a low speed, so that the braking roller is positioned at the lower end of the guide groove without revolving. Rotate at For this reason, the rolling roller rotates smoothly and the sliding door opens and closes slowly.

  On the other hand, when the operating force applied to the sliding door is relatively large and the sliding door is opened and closed with force, the rolling roller rotates at a high speed, so that the braking roller moves along the guide groove while rotating. Revolves between the brake roller and the stopper member and contacts the stopper member. The rotation resistance of the braking roller increases due to the contact with the stopper member, and the rotation resistance becomes the braking force of the rolling roller, and the momentum of the sliding door is instantaneously reduced in the initial stage of opening and closing of the sliding door.

  Also, as the momentum of the sliding door decreases, the braking roller descends along the guide groove due to its own weight, stops at the position reaching the lower end of the guide groove, and rotates, releasing the braking force load on the rolling roller and rolling. The moving roller rotates smoothly and the sliding door opens and closes slowly.

  Here, the guide groove may have an arc shape centered on the roller shaft. If the guide groove has an arc shape or a curved shape in which the distance to the roller shaft gradually decreases from the center portion between the upper and lower ends to the upper and lower ends, when the braking roller is revolved, the braking roller is relatively large. When it is necessary to apply a contact rotational force and the momentum of the sliding door is weak, it is possible to prevent the braking roller from being displaced to the upper end side of the guide groove. That is, it is possible to prevent the inconvenience that the braking force is applied to the rolling roller when the momentum of the sliding door is weak.

  In addition, when the braking roller is revolved by urging the braking roller toward the lower end of the guide groove by the elastic member, the contact is large enough to overcome the weight of the braking roller and the elastic force of the elastic member. Since it is necessary to apply a rotational force to the braking roller, it is possible to prevent the braking roller from being displaced toward the upper end side of the guide groove when the sliding door is weak as described above.

  In the present invention, as described above, when the sliding door is opened and closed with force, the braking roller revolves by contact with the rolling roller and revolves to contact the stopper member, and the braking by the contact with the stopper member. Since the rotation resistance is applied to the roller for use and the braking force is applied from the brake roller to the rolling roller, it is possible to prevent the sliding door from opening and closing vigorously.

The front view which shows the lower end part of the sliding door supported slidably by the doorwheel which concerns on this invention 1 Longitudinal sectional view of the door cart shown in FIG. Partially cutaway front view showing the braking state of the roller 1 is an exploded perspective view of the door cart shown in FIG. Front view showing another example of a guide groove for guiding a braking roller Front view showing still another example of guide groove for guiding braking roller Longitudinal sectional view showing another example of assembly unit of braking roller and inner housing of door roller according to this invention The longitudinal cross-sectional view which shows other embodiment of the doorwheel which concerns on this invention

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an opening / closing device configured to open and close an entrance / exit E by a sliding door D, and a door wheel A according to the present invention is attached in the door end side lower end portion and door door side lower end portion of the sliding door D. A is placed on a rail L laid on the floor surface F.

  As shown in FIGS. 2 to 5, the door cart A includes a housing 10. The housing 10 includes an outer housing 11 and an inner housing 12 incorporated inside the outer housing 11.

  The outer housing 11 has a rectangular tube shape having a pair of opposed side plates 13 and a pair of opposed end plates 14, and mounting pieces 15 facing outward are provided at the lower ends of the opposed pair of end plates 14. A screw insertion hole 16 made of a long hole is formed in the piece 15.

  The inner housing 12 is composed of a planar U-shaped frame having a pair of opposed side plates 18 on both sides of the end plate 17. The inner housing 12 is assembled so that the side plate 18 overlaps the side plate 13 of the outer housing 11 inside and outside.

  A shaft insertion hole 19 is formed in a lower portion of the side plate 18 of the inner housing 12 near the end plate 17, and a shaft end portion of a fulcrum shaft 20 inserted through the shaft insertion hole 19 is a side plate 13 of the outer housing 11. The inner housing 12 is swingable about the fulcrum shaft 20.

  On the upper part of the side plate 13 in the outer housing 11, a pair of cut-and-raised projections 21 a and 21 b that bulge to the inner surface side are provided at intervals in the left-right direction. One protruding portion 21a is opposed to the side plate 18 of the inner housing 12 in the vertical direction, and the upward swing of the inner housing 12 is restricted by the contact of the side plate 18 with the lower surface of the protruding portion 21a. The other protruding portion 21b faces a protruding piece 18a provided at one upper end of the side plate 18 in the inner housing 12, and the downward swing of the inner housing 12 is restricted by the contact of the protruding piece 18a with the protruding portion 21b. Is done.

  The side plate 13 of the outer housing 11 is formed with an arc-shaped long hole 22 centered on the fulcrum shaft 20, and both end portions of the roller shaft 23 are slidably inserted through the long hole 22. The roller shaft 23 is pierced and supported by the side plate 18 of the inner housing 12, and a rolling roller 24 that is rotatable about the roller shaft 23 is incorporated in the inner housing 12.

  Further, of the pair of end plates 14 of the outer housing 11, one end plate 14 facing the end plate 17 of the inner housing 12 is formed with a screw hole 25, and an adjustment screw 26 is screwed into the screw hole 25. Yes. The tip of the adjusting screw 26 faces the end plate 17 of the inner housing 12, and the end plate 17 is pushed by the screwing of the adjusting screw 26, so that the inner housing 12 swings around the fulcrum shaft 20, and the rolling roller 24 The height is adjusted.

  Between the pair of opposing side plates 18 of the inner housing 12, a braking roller 27 is installed on one side of the rolling roller 24, and a stopper pin 28 as a stopper member is installed on one side of the braking roller 27. .

  Both ends of the stopper pin 28 are supported by a pair of opposed side plates 18, and an interval smaller than the outer diameter of the braking roller 27 is provided between the outer periphery of the rolling roller 24.

  The braking roller 27 is fitted to a roller shaft 29 and is rotatably supported, and both end portions of the roller shaft 29 are slidably fitted into guide grooves 30 formed in the pair of opposed side plates 18 of the inner housing 12. Are combined.

  The guide groove 30 has an arc shape with the roller shaft 23 as the center. The guide groove 30 holds the braking roller 27 in a non-contact state with respect to the stopper pin 28 at the lower end portion thereof, and the non-contact braking roller 27 is opposed to the rolling roller 24 and the stopper pin 28. It is designed to guide you in between. In addition, the guide groove 30 is configured to hold the braking roller 27 in a state of always contacting the outer periphery of the rolling roller 24 over the entire length of the upper and lower ends.

  The sliding door opening and closing device shown in the embodiment has the above-described structure. As shown in FIG. 1, when a pair of doors A is attached to each of the door end side end and the door bottom side end of the sliding door D, The door pulley A has a symmetrical shape as an attachment with the opposite direction. In the mounted state of the door roller A, the rolling roller 24 of each door wheel A is supported by the rail L, and the sliding door D is movable along the rail L.

  In the sliding door opening and closing device shown in FIG. 1, when an operating force is applied to the sliding door D and the sliding door D is slid in the left direction indicated by the arrow in FIG. Roll along.

  In this case, when the operating force applied to the sliding door D is small, the door roller A on either side is in a state where the braking roller 27 is disposed at the lower end portion of the guide groove 30, that is, in a non-contact state with respect to the stopper pin 28. Thus, it rotates by contact with the rolling roller 24. For this reason, the resistance imparted from the braking roller 27 to the rolling roller 24 is small, and the rolling roller 24 rotates smoothly and the sliding door D can be slid smoothly.

  On the other hand, when the operating force applied to the sliding door D is relatively large, when the sliding door D starts to slide vigorously, the rolling roller 24 rotates at a high speed in the early stage of sliding, so the door wheel A disposed on the right side of the sliding door D. In this case, the braking roller 27 rotates along with the rolling groove 24 by contact with the rolling roller 24 and moves along the guide groove 30 to revolve around the rolling roller 24, and between the opposing portions of the braking roller 27 and the stopper pin 28. To contact the stopper pin 28.

  FIG. 4 shows a state in which the braking roller 27 is in contact with both the stopper pin 28 and the rolling roller 24. The contact with the stopper pin 28 increases the rotational resistance of the braking roller 27, and the rotational resistance becomes the rolling roller. The braking force is 24, and the momentum of the sliding door D is instantaneously weakened.

  Further, as the momentum of the sliding door D decreases, the braking roller 27 descends along the guide groove 30 due to its own weight, stops at the position reaching the lower end of the guide groove 30 and rotates, and the braking force applied to the rolling roller 24 is increased. Is released. For this reason, the rolling roller 24 rotates smoothly.

  On the other hand, in the door pulley A disposed on the left side of the sliding door D, the braking roller 27 rotates by contact with the rolling roller 24 in a non-contact state with the stopper pin 28. Therefore, no great rotational resistance is applied from the braking roller 27 to the rolling roller 24, and the rolling roller 24 rotates smoothly.

  As described above, when the operating force applied to the sliding door D is relatively large, the braking force is applied to the rolling roller 24 at the initial sliding of the sliding door D, and therefore the sliding door D slides in a state where the momentum is weakened. It will be. For this reason, there is no inconvenience such as the sliding door D impactingly contacting the stationary frame of the fixed frame to generate a large impact sound or damaging the sliding door D or the fixed frame due to the impact force. Can be opened and closed.

  If the sliding door D is slid swiftly in a direction opposite to the direction indicated by the arrow in FIG. 1, a braking force can be applied to the rolling roller 24 of the door wheel A arranged on the left side of the sliding door D, and the control is performed. The momentum of the sliding door D can be weakened by the power.

  In the embodiment shown in FIGS. 2 to 5, the housing 10 includes an outer housing 11 and a swingable inner housing 12 incorporated in the inner housing 11, and the rolling roller 24 is driven by the swinging of the inner housing 12. However, the door is not limited to this. The door is not limited to this, and the height of the roller cannot be adjusted by using a single housing and rotatably supporting the rolling roller by the opposite side plate of the housing. It may be a door cart.

  In FIG. 2, the guide groove 30 has an arc shape centered on the roller shaft 23, but as shown in FIG. 6, the center of curvature O is disposed at the eccentric position of the roller shaft 23, and between the upper and lower ends. The distance from the central part to the upper and lower ends of the roller shaft 23 gradually decreases, and the braking roller 27 comes into contact with the rolling roller 24 at the upper and lower ends of the guide groove 30 and is not in contact with the central part. It may be. Alternatively, as shown in FIG. 7, the distance to the roller shaft 23 gradually decreases from the center between the upper and lower ends to the upper and lower ends, and the braking roller 27 contacts the rolling roller 24 at the upper and lower ends of the guide groove 30. Further, it may be a dogleg-shaped curved shape that is not contacted in the central portion.

  In adopting the guide groove 30 shown in FIG. 6 and FIG. 7, when revolving the braking roller 27, it is necessary to apply a relatively large contact rotational force to the braking roller 27, and the momentum of the sliding door D is weak. In this case, it is possible to prevent the braking roller 27 from being displaced toward the upper end side of the guide groove 30. That is, when the momentum of the sliding door D is weak, it is possible to prevent an inconvenience that a braking force is applied to the rolling roller 24, and the door cart can be functioned reliably.

  In FIG. 8, a kick spring 31 as an elastic member is supported by the inner housing 12, and the braking roller 27 is urged toward the lower end portion of the guide groove 30 by the kick spring 31.

  As described above, when the braking roller 27 is revolved by urging the braking roller 27 toward the lower end portion of the guide groove 30 by the kick spring 31, the weight of the braking roller 27 and the kick spring 31 are increased. Therefore, when the sliding door D has a low momentum, the braking roller 27 is placed on the upper end side of the guide groove 30. It is possible to prevent displacement.

  FIG. 9 shows another embodiment of a door cart according to the present invention. In this embodiment, a braking roller 27 is provided on each of the left and right sides of the rolling roller 24 and a stopper pin 28 is provided on the upper side thereof. The braking roller 27 is connected to the stopper pin 28 and the rolling roller by a guide groove 30. It guide | induces toward between 24 opposing parts.

  As described above, by providing the braking roller 27 and the stopper pin 28 on the left and right sides of the rolling roller 24, the sliding door D is slid swiftly in both the left direction and the right direction by a single door wheel. In this case, a braking force can be applied to the rolling roller 24, and the sliding door D can be slidably supported in combination with a conventionally used door cart.

DESCRIPTION OF SYMBOLS 10 Housing 11 Outer housing 12 Inner housing 13 Side plate 18 Side plate 24 Rolling roller 27 Braking roller 28 Stopper pin (stopper member)
30 Guide groove 31 Kick spring (elastic member)

Claims (3)

In a door pulley having a housing attached to a sliding door, a roller shaft supported at both ends by a pair of opposed side plates provided in the housing, and a rolling roller rotatable about the roller shaft,
A braking roller is provided on at least one side on both sides of the outer periphery of the rolling roller, and a stopper member supported by the pair of opposing side plates is provided above the braking roller between the rolling roller. A pair of opposing side plates in the housing is provided with a guide groove for guiding the braking roller between the rolling roller and the opposing portion of the stopper member, and the guide groove is provided at a distance smaller than the outer diameter of the roller. A door roller having a curved shape that is held in a state in which the braking roller is in contact with the outer periphery of the rolling roller while the braking roller is guided to the upper and lower ends of the guide groove.   The guide groove has an arc shape centered on the roller shaft, or an arc shape having a center at the eccentric position of the roller shaft and gradually decreasing the distance to the roller shaft from the center between the upper and lower ends to the upper and lower ends. The door wheel according to claim 1.   The door roller according to claim 1 or 2, wherein the braking roller is urged toward the lower end portion of the guide groove by an elastic member.

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