JP4560002B2 - Sliding door braking device - Google Patents

Description

  The present invention relates to a self-closing type sliding door braking device.

  As the sliding door device, a self-closing type in which the sliding door is automatically closed is already known. In this type of sliding door device, a closing force generating means is provided between the sliding door and a member (sliding door frame) fixed at a predetermined position, and the opened sliding door is automatically operated by the urging force of the closing force generating means. It is configured to be closed. As the closing force generation means, the mainspring spring, coil spring, and the weight of the weight that pulls the sliding door in the closing direction, and the wheel provided on the sliding door are tilted slightly downward on the closing direction side. It is known that it is mounted on a rail so as to be able to roll and is automatically closed by its own weight.

  In such a sliding door device, when the sliding door is closed, the sliding door is prevented from damaging the sliding door or the member at the closed position or generating noise due to the impact that the sliding door strongly contacts the member such as the frame of the sliding door frame. In addition, a braking device is provided. Such a braking device includes a pinion that is externally fitted to an input shaft of a braking means that is fixed to the sliding door side, and a closing brake that is fixed to the sliding door frame side so as to mesh with the pinion and apply a predetermined torque to the pinion. With a rack.

  According to this sliding door device, since the pinion meshes with the closing braking rack and the input shaft is rotated while being braked before the sliding door is completely closed, the sliding door closing operation is braked, so the sliding door is closed. In this case, the sliding door does not come into strong contact with the member at the closed location, and it is possible to prevent the sliding door and the member at the closed location from being damaged or generating noise.

  By the way, in a sliding door apparatus, when fully opening a sliding door, a sliding door will contact | abut strongly to the members which control opening positions, such as a frame of an open side.

  Further, depending on the usage mode of the sliding door, there is a case where it is desired that the fully opened sliding door is closed after a predetermined time. As described above, conventionally, depending on the purpose of use of each sliding door, there has been a demand for a noise that is caused when the sliding door is fully opened, and a device that closes the fully opened sliding door after a predetermined time. In particular, since the sliding door has a strong momentum when opened, a braking force larger than the braking force required to completely close the sliding door may be required.

  Even if the opened sliding door automatically closes by the urging force of the closing force generating means, the present invention prevents noise when fully opening the sliding door, and opens position regulating members such as sliding doors and sliding door frames. It is an object of the present invention to prevent damage to the door or to close the fully opened sliding door after a desired time.

  The present invention has been made as a sliding door braking device in order to solve the above-mentioned problems, and is characterized by a braking device for braking a self-closing sliding door, wherein a predetermined rotational resistance is applied to an input shaft. Braking means for applying, a pair of pinion gears attached to the input shaft, a closed braking rack that meshes with one pinion gear before the sliding door is completely closed, and the sliding door that is opened before and fully opened. An opening braking rack that meshes with the other pinion gear is sometimes provided, and the other pinion gear applies braking force to the sliding doors in both directions of the opening direction of the sliding door before full opening and the closing direction of the sliding door opened to a predetermined position. As described above, a predetermined rotational resistance is applied to both the rotation in the door opening direction and the rotation in the door closing direction.

  Further, the present invention has been made as a sliding door braking device in order to solve the above-mentioned problems, and is characterized in that the braking device is attached to the sliding door side to brake the self-closing type sliding door, and includes an input shaft. And a pair of pinion gears attached to the input shaft. One pinion gear is attached to the input shaft via a one-way clutch, and the other pinion gear is a one-way clutch. It is in being attached to the input shaft without going through.

  Since the present invention is configured as described above, the braking function immediately before closing the door, the back check function, and the delayed action function can be provided by the single braking means, the closing braking rack, and the opening braking rack. It becomes possible to achieve downsizing and cost reduction.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1 to FIG. 4, reference numeral 1 denotes a sliding door that is suspended from a sliding door frame 3 so as to be movable in the left-right direction. In the present embodiment, a sliding door for right opening is illustrated, but it goes without saying that it may be a sliding door for left opening. The sliding door frame 3 is formed by connecting the upper side of the closing side frame 5 and the opening side frame 7 of the sliding door 1 with an upper horizontal frame 8 and the lower side with a lower horizontal frame (not shown). It is.

  A wheel 13 is rotatably supported on the upper edge of the sliding door 1 via a plurality of brackets 12a and 12b extending upward.

  An inclined frame 15 having a substantially L-shaped cross section is fixed to the upper horizontal frame 8 so that the door end side (closed side frame 5 side) is slightly inclined downward, and a rail portion formed on the inclined frame 15 The wheel 13 is mounted on 16 so as to roll freely. Therefore, when the wheel 13 rolls on the inclined rail portion 16 to the door end side by the weight of the sliding door 1, the sliding door 1 is automatically closed and automatically returns to the original closing position. The inclined frame 15 constitutes a closing force generating means.

  A first braking means 18 is provided on the bracket 12a on the door end side. The braking means 18 gives a braking force (rotational resistance) to the input shaft 21 supported so as to be freely rotatable forward and backward, and its structure is arbitrary as long as such a braking function can be exhibited. For example, in the present embodiment, as shown in FIG. 4, a trochoid pump that is rotatably incorporated in the casing 22 with the outer rotor 23 and the inner rotor 25 being eccentric is employed as the first braking means 18. ing. And the hydraulic damper which comprised the throttle valve 29 in the middle of the oil path 26 connected in the pump chamber 24 is comprised.

  In the first braking means 18, when the input shaft 21 connected to the inner rotor 25 is rotated in an arbitrary direction, hydraulic oil is supplied from the pump chamber 24 by the cooperation of the outer rotor 23 and the inner rotor 25 that rotate with each other. It is pushed out to the passage 26 and returns to the pump chamber 24 through the throttle valve 29 again. At this time, since a constant resistance acts on the hydraulic oil by the throttle valve 29, a rotational resistance acts on the input shaft 21. Note that this rotational resistance can be set to an arbitrary value by adjusting the throttle amount of the throttle valve 29. Further, when the input shaft 21 is rotated in the reverse direction, the hydraulic oil passes through a path opposite to that in the forward rotation, but the rotational resistance force in the direction opposite to the rotation direction acts on the input shaft 21 as in the forward rotation. To do.

  The input shaft 21 is provided with a pinion gear 28 that meshes with a closing brake rack 30 laid on the door end side of the inclined frame 15. A one-way clutch (not shown) is mounted between the input shaft 21 and the pinion gear 28. In the one-way clutch, when the pinion gear 28 rotates forward in the closing direction of the sliding door, the pinion gear 28 rotates the input shaft 21 to transmit torque, and conversely, when the pinion gear 28 rotates backward in the door opening direction. The pinion gear 28 is idled so that the torque transmission of the input shaft 21 is blocked. The first braking device 18, the pinion gear 28 and the closing braking rack 30 constitute a first braking device.

  A second braking means 32 having a back check function and a delayed action function is attached to the bracket 12b on the door bottom side. Here, the back check function means that when the opening speed of the sliding door increases, the sliding door may strongly collide with the door stop (opening side frame 7) to generate a loud sound, or the door frame or the sliding door may be damaged. Because there are, it means to prevent these. The delayed action function means that the sliding door closes at a low speed for the first predetermined distance when the door is closed.

  The second braking means 32 includes a trochoid pump that is the same member as the first braking means 18. The second braking means 33 is configured to apply a stronger braking force than the first braking means 18. The braking force can be adjusted to an arbitrary strength by the throttle valve 29. Further, the one-way clutch is not provided between the input shaft 35 and the pinion gear 36, and the two are integrated so as not to rotate relative to each other.

  Also, an open braking rack 39 that meshes with the pinion gear 36 of the second braking means 32 is attached to the door bottom side of the inclined frame 15 immediately before the sliding door is fully opened and when the door is closed. The second braking means 32, the pinion gear 36 and the release braking rack 39 constitute a second braking device.

  In the above configuration, as shown in FIG. 1, when the passer fully opens the sliding door 1 in the closed state (when the sliding door 1 is moved in the right direction), the pinion gear 28 of the first braking device is the rack for closing braking. 30 and meshes in the clockwise direction (reverse rotation direction), but the pinion gear 28 rotates idly by the action of a one-way clutch interposed between the input shaft 21 and the input shaft 21 does not rotate. The braking function does not work. Therefore, the passerby can open the sliding door 1 with a light force without feeling resistance.

  When the sliding door 1 moves to a predetermined position near the fully open position, the pinion gear 36 of the second braking device meshes with the open braking rack 39, and the pinion gear 36 rotates the input shaft 35, so that the second braking device operates. The door opening operation is controlled (see FIG. 2). The speed of the sliding door 1 is excellent in the braking effect because the braking force is set to a predetermined force larger than that of the first braking device. Therefore, the sliding door 1 does not come into strong contact with the door butt side collar frame 4 which is a member for regulating the open position, and it is possible to prevent the sliding door 1, the door butt side collar frame 4 and the like from being damaged or generating noise. .

  Next, since the closing force generating means acts on the fully opened sliding door 1 (the wheel tends to roll on the inclined rail portion), the sliding door 1 tries to move in the closing direction. Since the pinion gear 36 of the braking device meshes with the open braking rack 39, the sliding door 1 moves at a low speed while being braked. Since the speed of the sliding door 1 is set to a large predetermined force, it can be moved at a low speed over a predetermined time. During this time, passers-by can enter and leave the room with confidence. Further, when the pinion gear 36 passes through the open braking rack 39, the braking force is released, so that the sliding door 1 self-runs at a predetermined speed increased.

  When the sliding door 1 reaches a predetermined deceleration start position, the pinion gear 28 of the first braking device and the closing braking rack 30 start to mesh with each other. During the engagement of the pinion gear 28 and the closing brake rack 30, the pinion gear 28 rotates counterclockwise. At this time, the torque of the pinion gear 28 is transmitted to the first braking means 18 via the one-way clutch, so that a braking force acts on the sliding door 1 via the input shaft 21, thereby reducing the closing speed of the sliding door 1. Then, the sliding door 1 moves to the fully closed position and completely blocks the passage (see FIG. 1). At this time, since the closing speed of the sliding door 1 is sufficiently decelerated, the sliding door 1 moves gently to the fully closed position at a low speed without significantly increasing the inertial force.

  As described above, in the present embodiment, the second braking device applies a braking force larger than the braking force of the first braking device to the sliding door 1, so that it is affected by the force of the closing force generating means. The desired back check function and the delayed action function can be effectively exhibited. Further, since the closing brake rack 30 and the open braking rack 39 may be mounted on the inclined frame 15 in the same upward direction, they can be easily mounted without any special member.

  5 to 8 show a second embodiment of the present invention. In addition, the same member attaches | subjects the same code | symbol and the description is abbreviate | omitted. In the present embodiment, the single braking means 41 has a fully-closed braking function, a back check function, and a delayed action function. Specifically, large and small two-stage pinion gears 43 and 44 are attached to the input shaft 21 of the braking means 41 corresponding to the first braking means 18.

  A large-diameter pinion gear (one pinion gear) 43 is attached to the input shaft 21 via a one-way clutch. The operation of the one-way clutch is the same as that of the first braking means 18. A small-diameter pinion gear (the other pinion gear) 44 is attached to the input shaft 21 without a one-way clutch.

  The closing braking rack 30 and the opening braking rack 39 are arranged in parallel to each other so as to mesh with the pinion gears 43 and 44, and the opening braking rack 39 meshing with the small-diameter pinion gear 44 has a large diameter. It is higher than the closing braking rack 30 that meshes with the pinion gear 43. Thus, by making the diameters of the pinion gears different from each other, a larger braking force acts on the small-diameter pinion gear 44 side than the large-diameter pinion gear 43.

  Next, the operation of the braking device having the above configuration will be described. When the passerby fully opens the closed sliding door 1, the large-diameter pinion gear 43 meshes with the closing braking rack 30, but the pinion gear 43 is idled by the function of the one-way clutch, so that the braking function is effective. What is not performed is the same as in the first embodiment.

  When the sliding door 1 moves to a predetermined position near the fully open position, the small-diameter pinion gear 44 meshes with the open braking rack 39, so that the braking device operates. Compared with the large-diameter pinion gear 43, the small-diameter pinion gear 44 requires a large force to rotate the input shaft 21, and a large braking force is obtained (see FIG. 8 (a)).

  Next, when the sliding door 1 is closed, a closing force generating means acts. However, since the small-diameter pinion gear 44 meshes with the open braking rack 39, the sliding door 1 is braked with a predetermined large force. Move at low speed. Further, when the pinion gear 44 passes through the open braking rack 39, the braking force is released, so that the sliding door 1 self-runs at a predetermined speed (see FIG. 8B).

  When the sliding door 1 reaches a predetermined deceleration start position, the large-diameter pinion gear 43 and the closing brake rack 30 mesh with each other, so that the pinion gear 43 rotates counterclockwise (see FIG. 8C). At this time, since the torque of the pinion gear 43 is transmitted to the input shaft 21 via the one-way clutch, a braking force acts on the input shaft 21, thereby reducing the closing speed of the sliding door 1, and the sliding door 1 is fully closed. Move to the position and completely block the passage.

  As described above, in the second embodiment, even when the braking device 41 is a single unit, the braking function at the time of closing when the braking force may be relatively weak, the back check function and the delayed action function with a strong braking force, The structure and the mounting are simplified.

  The present invention is not limited to the above-described embodiment, and can include either a back check function or a delayed action function depending on the purpose of use of the sliding door. For example, when the second braking device of the first embodiment has only the back check function, the pinion gear 36 can be attached to the input shaft 35 via a one-way clutch that functions in the reverse rotation direction (provides rotational resistance). It ’s fine. When only the delayed action function is used, a one-way clutch that functions in the forward rotation direction is used. Normally, a single one-way clutch can be used upside down. Further, the braking device in the second embodiment can also be provided with either a back check function or a delayed action function by using a one-way clutch.

  Furthermore, the closing force generating means is not limited to the above-described one, and a mainspring spring or a coil spring that is urged in the closing direction, or a device that pulls the sliding door in the closing direction by the weight of the weight can be employed.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the outline of 1st embodiment of this invention, and shows the closed state of a sliding door. The front view which shows the open door state of the sliding door. The side view which shows the principal part. The side view which shows the said braking means. The front view which shows the outline of 2nd embodiment of this invention, and shows the closed state of a sliding door. The front view which shows the open door state of the sliding door. (A) is a sectional side view of a state in which a large-diameter pinion gear and a closing braking rack are engaged with each other, and (b) is a sectional side view of a state in which a small-diameter pinion gear and an opening braking rack are engaged. (A)-(c) is a top view which shows the movement state of a braking means, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sliding door, 32 ... Sliding door frame, 18 ... First braking means, 28 ... Pinion gear, 30 ... Closed braking rack, 33 ... Second braking means, 36 ... Pinion gear, 39 ... Open braking rack

Claims (2)

  A braking device for braking a self-closing sliding door, a braking means for applying a predetermined rotational resistance to the input shaft, a pair of pinion gears attached to the input shaft, and before the sliding door is completely closed A closed braking rack that meshes with one pinion gear, and an open braking rack that meshes with the other pinion gear before the sliding door is fully opened and when the opened sliding door is closed. Predetermined rotational resistance must be applied both during rotation in the door opening direction and during rotation in the door closing direction so as to apply braking force to the sliding doors in both directions in the door closing direction and the door closing direction. A sliding door brake device.   A braking device attached to the sliding door side for braking a self-closing sliding door, comprising braking means for imparting a predetermined rotational resistance to the input shaft, and a pair of pinion gears attached to the input shaft, A sliding door braking device, wherein the pinion gear is attached to the input shaft via a one-way clutch, and the other pinion gear is attached to the input shaft without a one-way clutch.

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