JP2015021263A - Braking device of sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a braking device of a sliding door having the long product life, and capable of easily adjusting braking force of the opening directional movement of the sliding door, without having influence on the braking force of the closing directional movement.SOLUTION: The braking device of the sliding door comprises an independent closing time braking mechanism for braking the closing directional movement of the sliding door and an opening time braking mechanism for braking the opening directional movement of the sliding door, in which the opening time braking mechanism comprises a rotary damper provided in the sliding door and having a pinion on the periphery, a rack 30 always meshing with the pinion and moving together with the sliding door, a rack holding material 23 for slidably holding this rack 30 in the movement direction and a stopping member 29 for rotating the rotary damper by relatively moving this rack 30 to the sliding door by abutting on an end part of the rack 30, and the rack 30 is composed of a rack single body 31 connectable in series, and the rack holding material 23 can attach-detach the rack single body 31.

Description

  The present invention relates to a sliding door braking device.

  In order to prevent forgetting to close the sliding door, a structure (self-closing structure) in which the closing direction is automatically moved by its own weight or a spring and the opening direction is manually moved is employed. In such a sliding door, the braking force required for the movement in the closing direction may be constant, and it is desirable that the braking force required for the movement in the opening direction can be adjusted according to the manual force. Of course, any sliding door should have a longer product life.

  As an extension of the product life of the sliding door device, there is a configuration in which the braking rack is always meshed with the pinion of the braking mechanism fixed to the sliding door in order to prevent the teeth of the braking rack from being chipped and to prevent noise. It has been proposed (see, for example, Patent Document 1). This braking mechanism can be braked in both the opening and closing directions by using a bidirectional rotating damper (a rotating braking mechanism having a braking function in both the forward and reverse rotational directions). Therefore, the braking device described in Patent Document 1 performs braking in the closing direction movement of the sliding door and braking in the opening direction by a braking mechanism capable of braking in both directions.

Japanese Patent No. 4091044

  By the way, in the braking device described in the above-mentioned Patent Document 1, braking in the closing direction of the sliding door and braking in the opening direction are performed by one bi-directional rotating damper, and the respective braking forces are equal. For this reason, when the braking device is applied to a self-closing sliding door and installed in a facility where such a sliding door is moved in the opening direction with a strong force, the braking force for the opening movement becomes insufficient, and the sliding door It becomes easy to break when moving in the opening direction. If the braking force for the opening direction movement of the sliding door is increased in order to prevent the breakage, the closing force for the closing direction movement is also increased, so that there is a problem that the closing direction movement is delayed.

  Therefore, the present invention has an object to provide a sliding door braking device that has a long product life and can easily adjust the braking force for moving the sliding door in the opening direction without affecting the braking force for moving the closing direction. And

In order to solve the above-described problem, a sliding door braking device according to claim 1 of the present invention includes an independent closing braking mechanism that brakes movement of the sliding door in the closing direction, and an opening braking mechanism that brakes movement of the sliding door in the opening direction. With
A rotating damper provided at a sliding door and provided with a pinion around it; a rack that always meshes with the pinion and moves with the sliding door; and a rack holding material that holds the rack slidably in the moving direction. A braking device for a sliding door having a stop member that rotates the rotary damper by moving the rack relative to the sliding door by contacting the end of the rack,
The rack is a single rack that can be connected in series,
The rack holding member can attach and detach the rack alone.

A sliding door braking device according to a second aspect of the present invention is the sliding door braking device according to the first aspect, wherein one end portion of the rack unit is provided with an engagement plate and a female portion on one end side. ,
The other end portion of the rack unit is provided with an engagement plate on the other end side and a male unit that can be fitted to a female unit of another rack unit.
The rack holding member includes a lip portion in a sliding direction that holds the rack by engaging with the engagement plate, and a notch portion that is formed on the lip portion and allows the engagement plate to pass therethrough.

  According to the sliding door braking device, the product life is long, and the braking force of the sliding door in the opening direction can be easily adjusted without affecting the braking force of the closing movement.

It is a schematic front view of the braking device of the sliding door concerning an embodiment of the invention, and shows the state where a sliding door is closed. It is a schematic front view of the brake device, and shows a state where the sliding door is open. It is a principal part enlarged view of the brake device, (a) shows a front, (b) shows the cross section seen from the door-end side. It is a perspective view of the guide rail and rack in the brake device. It is an expansion perspective view of the rack single-piece | unit which comprises the rack. It is an enlarged view of the same rack, (a) shows the front, (b) shows the bottom. It is a principal part enlarged front view explaining operation | movement of the brake device, (a) is a figure of the state which the sliding door started the opening direction movement, (b) is a figure of the state which the rack contact | abutted to the stop member, (c) ) Is a diagram in a state where braking force is generated in the sliding door, and (d) is a diagram in a state in which the sliding door has reached the door butt. It is a principal part expansion perspective view for demonstrating the addition of a rack single-piece | unit, (a) is a figure which shows the state before adding a rack single-piece | unit, (b) is a figure which shows the state after adding the rack single-piece | unit. .

Hereinafter, a braking device for a sliding door according to an embodiment of the present invention will be described with reference to the drawings.
First, the outline of the sliding door provided with the said braking device is demonstrated.
As shown in FIGS. 1 and 2, the sliding door moves left and right within a frame made up of an upper frame 2, a door end side frame 3, a door bottom side frame 4, and a lower frame (not shown). The opening 6 (formed from the upper frame 2, the door-end side frame 3, the door pocket 5, and the lower frame) 6 is opened and closed. In the following, the movement of the sliding door 1 toward the door pouch 5 (right direction, that is, the door butt direction) is referred to as an opening direction movement, and the movement of the sliding door 1 toward the opening 6 side (left direction, that is, the direction of the door tip) This is called movement, and these are collectively referred to as opening and closing direction movement.

  In order to move the sliding door 1 in the opening and closing direction, the upper frame 2 is provided with a guide rail 21 having a rail portion 22 extending in the left and right directions, and the sliding door 1 can run on the rail portion 22. Is provided via a travel bracket 15. Further, the guide rail 21 is disposed so that the sliding door 1 automatically moves in the closing direction by its own weight (so that the door tip side of the rail portion 22 is lower than the door bottom side). That is, the sliding door 1 has a self-closing structure.

  The braking device 10 for the sliding door 1 includes a closing-time braking mechanism 11 that brakes the movement of the sliding door 1 in the closing direction, and an opening-time braking mechanism 12 that brakes the movement of the sliding door 1 in the closing direction. The closed brake mechanism 11 and the open brake mechanism 12 are independent from each other and do not affect each braking force.

  The closing brake mechanism 11 may be a known one, and is provided in the sliding door 1 and has a configuration described in JP 2013-96203 A, for example. On the other hand, the open-time braking mechanism 12 is provided on the sliding door 1 and the upper frame 2 and has a configuration capable of easily adjusting the braking force.

Hereinafter, the opening brake mechanism 12 which is the gist of the present invention will be described in detail.
In the upper frame 2, as shown in FIGS. 3A and 3B, a rack 30 that brakes movement of the sliding door 1 in the opening direction is disposed via a rack holding member 23. The rack holding member 23 is provided on the guide rail 21 and holds the rack 30 slidably in the opening / closing direction of the sliding door 1. In other words, as shown in detail in FIGS. 3B and 4, the guide rail 21 has a substantially L-shaped cross section composed of a horizontal portion and a vertical portion, and the rail portion protrudes upward from the horizontal portion. 22 is provided, and the rack holding member 23 is provided in the vertical portion.

  As shown in FIGS. 3A and 3B, the sliding door 1 is provided with a rotary damper (rotary damper) 18 having a pinion 19 that always meshes with the rack 30 through a braking bracket 17. It has been. The braking bracket 17 is attached to the traveling bracket 15, in other words, is indirectly fixed to the sliding door 1. The rotary damper 18 is concentric with the pinion 19 with its rotation axis in the vertical direction. The rotary damper 18 includes a clutch in order to generate a braking force when the pinion 19 rotates while meshing with the rack 30.

  As shown in FIGS. 3B and 4, the rack holding member 23 is roughly formed by reducing the size of the lip groove steel, and the vertical web portion 24 and the web portion 24 from above and below are horizontally arranged. It consists of a protruding flange portion 25 and a lip portion 26 protruding vertically so as to approach each other from the protruding ends of the upper and lower flange portions 25. These upper and lower lip portions 26 are not in contact with each other, that is, have an opening 27 extending in the longitudinal (left and right) direction. As shown in FIG. 4, the rack holding member 23 has two rectangular cutout portions 28 formed in the lip portion 26 at a predetermined interval in the left-right direction. These cutout portions 28 are portions for attaching and detaching the rack 30 to and from the rack holding member 23.

  As shown in FIGS. 1 and 4, the rack holding member 23 is provided with a stop member 29 that partially closes the opening 27 of the lip portion 26. The position where the stop member 29 is provided is slightly on the door bottom side from the position of the pinion 19 when the sliding door 1 reaches the door bottom. Accordingly, the stop member 29 abuts against the door bottom side (right side) end of the rack 30 that slides together with the sliding door 1 that moves in the opening direction, thereby moving the rack 30 relative to the sliding door 1 to thereby move the rotary damper. 18 is rotated.

  As shown in FIG. 4, the rack 30 has a plurality of (for example, three) racks 31 connected in series. For this reason, the length of the rack 30 can be adjusted by changing the number of connected racks 31.

  As shown in FIGS. 5 and 6, each rack unit 31 includes a main body portion 32 having a predetermined length (for example, 110 mm), and a female side connection portion 34 provided on one end side (left side) of the main body portion 32. , And a male side connecting portion 35 provided on the other end side (right side) of the main body portion 32. That is, the rack unit 31 is configured to be connected to the male side connection unit 35 / female side connection unit 34 of another rack unit 31 by the female side connection unit 34 / male side connection unit 35. More specifically, the main body 32 has teeth 33 for engaging with the pinion 19 on the front surface over the predetermined length. The main body 32 is provided with a female side engaging plate 42 that protrudes from one end surface (left side surface) of the main body portion 32 and is flush with the back surface of the main body portion 32 as the female side connection portion 34. ing. The female side engaging plate 42 is formed with a hole 43 serving as a female portion. On the other hand, the main body portion 32 has, as the male side connection portion 35, a stepped portion 52 that is retracted from the back surface of the other end portion (right side portion) of the main body portion 32 by the thickness of the female side engagement plate 42, and A protrusion 53 as a male portion that protrudes from the step portion 52 until it is flush with the back surface, and a male engagement plate (from the female engagement plate 42 that protrudes from the top and bottom surfaces) on one end side (left side) of the step portion 52. 54, which are flush with each other. The step portion 52 contacts the female engagement plate 42 of the other rack unit 31, and therefore the left and right width thereof is the same as the left and right width of the female engagement plate 42. Therefore, the connection between the male side connection part 35 and the female side connection part 34 of the other rack unit 31 is made by fitting the protrusion 53 (male part) into the hole 43 (female part) of the other rack unit 31, This is done by bringing the female side engaging plate 42 of another rack unit 31 into contact with the portion 52.

  As shown in FIG. 4, in the rack unit 31, the front-rear width of the main body 32 is made larger than the front-rear width of the flange portion 25 of the rack 30 holding portion, and the vertical width of the teeth 33 is the lip portion 26 of the rack 30 holding portion. It is smaller than the opening 27. That is, as shown in FIGS. 3B and 4, the rack unit 31 is configured such that the teeth 33 protrude horizontally from the opening 27 of the lip portion 26 while being held by the rack holding member 23. ing. The engaging plates 42 and 54 have a vertical width larger than the opening 27 of the lip portion 26 of the rack holding member 23 and smaller than the interval between the upper and lower flange portions 25 of the lip portion 26. That is, the rack unit 31 is configured not to drop off from the rack holding member 23 by the engagement plates 42 and 54 engaging with the lip portion 26. Further, as shown in FIGS. 5 and 6, protrusions 60 extending in the left-right direction are provided in the vicinity of the upper and lower ends on the front side of the engagement plates 42, 54. These protrusions 60 prevent wear of the engaging plates 42 and 54 due to the sliding movement of the rack 30 and make the sliding movement of the rack 30 smooth.

  Here, as described above, since the notch portion 28 of the lip portion 26 is a portion for attaching and detaching the rack 30, the vertical widths of the engagement plates 42 and 54 are made smaller than the vertical width of the lip notch portion 28. . Further, as shown in FIG. 4, the interval between the engagement plates 42 and 54 in the rack unit 31 is the same as the predetermined interval between the two notches 28 in the lip portion 26. That is, the rack holding member 23 is configured to attach and detach the rack unit 31 by allowing the two engagement plates 42 and 54 of the rack unit 31 to pass through the two notches 28 in the lip portion 26. In addition, the male side connection part 35 / female side connection part 34 of the rack unit 31 and the female side connection part 34 / male side connection part 35 of the other rack unit 31 can be connected at the notch 28 of the lip part 26. Therefore, the left-right width of the notch 28 is made larger than the sum of the left-right width of the female engagement plate 42 and the left-right width of the male engagement plate 54.

Hereinafter, operation | movement of the braking device 10 of the said sliding door 1 is demonstrated.
As shown in FIG. 7A, when a force for moving in the opening direction is applied to the sliding door 1, the sliding door 1 moves in the opening direction. As the sliding door 1 moves in the opening direction, the pinion 19 provided in the sliding door 1 moves, and the rack 30 engaged with the pinion 19 slides the rack holding member 23.

  Then, as shown in FIG. 7B, when the door bottom side (right side) end of the rack 30 comes into contact with the stop member 29, the sliding movement of the rack 30 stops, but the movement in the opening direction of the sliding door 1 continues. . That is, the rack 30 moves relative to the sliding door 1. As a result, as shown in FIG. 7C, the pinion 19 rotates while meshing with the rack 30, and a braking force is generated in the sliding door 1. With this braking force, the sliding door 1 decelerates as it moves to the door bottom side. For this reason, the speed of the sliding door 1 which reached the door bottom falls to such an extent that the sliding door 1 and its surroundings are not damaged. At the door bottom, the sliding door 1 is locked by a stopper (not shown), and the open state is maintained as shown in FIG.

  Here, in a facility where the force applied to the sliding door 1 for moving in the opening direction is strong, it is necessary to lengthen the rack 30 and increase the braking distance. In this case, first, the rack 30 is slid and the female engagement plate 42 closest to the door end of the rack 30 is positioned in the notch 28 on the door bottom side, as shown in FIG. Thereafter, the female side engaging plate 42 and the male side engaging plate 54 of the rack unit 31 to be added are passed through the notch portion 28 on the door end side and the notch portion 28 on the door bottom side, respectively. Then, the protrusion 53 of the rack unit 31 to be added is fitted into the hole 43 of the female side engagement plate 42 of the rack unit 31 to be added. Thus, as shown in FIG. 8B, the rack unit 31 is newly added.

  Conversely, in a facility where the force applied to the sliding door 1 for moving in the opening direction is weak, it is necessary to shorten the rack 30 and shorten the braking distance. In this case, a procedure reverse to the procedure for newly adding the rack unit 31 is performed.

  Thus, according to the braking device 10 of the sliding door 1, the pinion 19 is always meshed without climbing on the rack 30, so that it is possible to prevent the noise and the loss of the teeth 33, thereby extending the product life. The length of the rack 30 can be easily adjusted by the connecting portions 34 and 35 of the single rack 31 without being affected by the braking force of the sliding door 1 moving in the closing direction by the independent closing brake mechanism 11.

  In addition, the rack 30 includes a single rack 31 connected in series, and each rack single 31 is provided with engagement plates 42 and 54 that engage the lip 26 at one end and the other end. The warp of the rack 30 held by 23 can be suppressed.

  Furthermore, the protrusions 60 provided on the joining plate can prevent the engagement plates 42 and 54 from being worn, thereby extending the product life and smoothing the sliding movement of the rack 30.

  Further, since the teeth 33 of the rack 30 protrude horizontally and the rotation axis of the pinion 19 is in the vertical direction, accumulation of dust or the like on the teeth 33 of the rack 30 and the pinion 19 can be prevented.

  Further, since the interval between the engagement plates 42 and 54 in the rack unit 31 and the predetermined interval between the two notches 28 in the lip portion 26 are the same, the both engagement plates 42 and 54 are simultaneously passed through the two notches 28. Accordingly, the rack 31 can be easily attached and detached, so that the length of the rack 30 can be adjusted more easily.

  By the way, in the said embodiment, although the shape was not demonstrated about the hole 43 as a female part, and the processus | protrusion 53 as a male part, as long as these can fit, it is a short cylinder shape, for example. . Moreover, the shape which added the key part to this short cylinder shape may be sufficient. If it is this shape, the rack single-piece | unit 31 can be connected more firmly.

  In the above embodiment, the protrusion 60 is described as being provided on the front side of the engagement plates 42, 54. However, the protrusion 60 may be provided on the back side of the engagement plates 42, 54. . By doing so, it is possible to further prevent the engagement plates 42 and 54 from being worn and to prolong the product life, and to make the rack 30 slide smoothly.

  Furthermore, in the said embodiment, although the tooth | gear 33 of the rack 30 demonstrated as horizontally projecting, it is not limited to this, If the direction which the tooth | gear 33 protrudes is either between horizontal and the downward | lower direction, Good.

Moreover, although the said embodiment demonstrated the two notch parts 28 formed in the lip | rip part 26, it is not limited to this number, It changes suitably as needed.
Moreover, although the said embodiment demonstrated that the guide rail 21 was arrange | positioned so that the door end side of the rail part 22 might become lower than the door bottom side, if it is a self-closing structure, it will not be limited to this. For example, the guide rail 21 is arranged so that the rail portion 22 is horizontal, and a known self-closing means (for example, a mainspring spring or a tension spring) is provided so that the sliding door 1 automatically moves in the closing direction. May be.

DESCRIPTION OF SYMBOLS 1 Sliding door 2 Upper frame 10 Braking device 12 Opening brake mechanism 18 Rotary damper 19 Pinion 21 Guide rail 23 Rack holding material 24 Web part 25 Flange part 26 Lip part 27 Opening 28 Notch part 29 Stopping member 30 Rack 31 Rack unit 32 Main body part 33 Teeth 34 Female side connecting portion 35 Male side connecting portion 42 Female side engaging plate 43 Hole 52 Stepped portion 53 Projection 54 Male side engaging plate 60 Projection

Claims (2)

An independent closing braking mechanism for braking the sliding door movement in the closing direction, and an opening braking mechanism for braking the sliding door movement in the opening direction;
A rotating damper provided at a sliding door and provided with a pinion around it; a rack that always meshes with the pinion and moves with the sliding door; and a rack holding material that holds the rack slidably in the moving direction. A braking device for a sliding door having a stop member that rotates the rotary damper by moving the rack relative to the sliding door by contacting the end of the rack,
The rack is a single rack that can be connected in series,
The sliding door braking device, wherein the rack holding member is capable of attaching and detaching the rack alone. At one end of the rack alone, an engagement plate on one end side and a female part are provided,
The other end portion of the rack unit is provided with an engagement plate on the other end side and a male unit that can be fitted to a female unit of another rack unit.
The rack holding member includes a lip portion in a sliding direction that holds the rack by engaging with the engagement plate, and a notch portion that is formed on the lip portion and allows the engagement plate to pass therethrough. Item 5. A sliding door braking device according to item 1.

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