JP2018193780A - Retracting device for sliding door - Google Patents

Abstract

To provide a retracting device for a sliding door installed in a place where a malfunction easily occurs in a piston type damper due to moisture, dust, etc.SOLUTION: A retracting device 1 for a sliding door comprises: a slider 15 slidably provided inside a case 2, having an engaging protrusion which engages with a slide guide groove 13 formed in the case 2, and engaging with/disengaging from an engaging pin 10 provided on a door frame side; a piston type damper 16 provided inside the case 2 in a state in which a piston tip is connected to the slider 15; and a spring member 17 whose one end is locked with the slider 15 and the other end is locked with the case 2, for applying an energizing force to the slider 15 in a retracting direction of the sliding door. In the retracting device 1 for the sliding door, moisture/dust countermeasure means 19 is provided for the piston type damper 16, and the moisture/dust countermeasure means 19 includes a flocked brush part 21 protruding toward a piston 16B, and a piston insertion part 22 through which the piston is inserted in a contact state.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a sliding door retracting device provided in a place where a malfunction is likely to occur in a piston type damper due to moisture or dust.

  Conventionally, a suspended door type runner device fixed to the upper end of a sliding door is guided along a guide rail fixed to the head of the door frame, and a door fixed to the lower end of the sliding door is used for the door. For sliding doors such as sliding doors that are guided along a rail, various sliding door retracting devices have been proposed that automatically close to a closed position after closing from an open state to a predetermined position.

  For example, in Patent Document 1 below, a retracting device main body installed in an embedded state on the upper end surface of a sliding door and an engaging pin fixed to the door frame, the pulling device main body is engaged along the sliding door opening / closing direction. A case provided with a guide pin guide groove, a slider provided in the case so as to be slidable along the sliding door opening / closing direction, and a piston type damper provided in the case connected to the slider And a spring member having one end locked to the slider and the other end locked to the case, and an engagement that is swingably provided on the slider and engages a slide guide groove formed on the case. There is disclosed a retracting device for a sliding door that includes a projecting portion and an operating cam that is engaged with and disengaged from the engaging pin when the sliding door is opened and closed.

JP 2007-278057 A

  The sliding door retracting device can be installed for each sliding door in a building, but when applied to a sliding door that partitions a bathroom, for example, it will be exposed to moisture from the bathtub, It has been found that the piston type damper is likely to have a problem due to moisture even during use. Also, in the case of a sliding door installed in a place where there is a lot of dust, there is a case where a problem occurs in the piston type damper due to the dust entering the inside of the cylinder.

  Accordingly, a main object of the present invention is to provide a retracting device suitable for a sliding door installed in a place where a malfunction is likely to occur in a piston type damper due to moisture or dust.

In order to solve the above-mentioned problem, the present invention according to claim 1 is provided as a case and a mechanism that is slidable along the opening / closing direction of the sliding door and engages with a slide guide groove formed in the case. A slider having a mating projection and having an upper end projecting from the case and being engaged with and disengaging from an engagement pin provided on the door frame side; and a piston tip coupled to the slider The piston type damper provided in the case, and a spring member that has one end locked to the slider and the other end locked to the case, and applies a biasing force in the sliding door retracting direction to the slider. In the sliding door retracting device,
Moisture / dust countermeasure means is provided for the piston type damper, and the moisture / dust countermeasure means includes a flocked brush portion protruding toward the piston, and a piston insertion portion through which the piston is inserted in contact. A sliding door retracting device is provided.

  In the first aspect of the present invention, moisture / dust countermeasures are provided for the piston type damper. The moisture / dust countermeasure means includes a flocked brush portion that protrudes toward the piston, and a piston insertion portion through which the piston is inserted in contact.

  Therefore, when the piston protrudes from the cylinder, even if water droplets or moisture adhering to the surface of the piston due to the high humidity in the surroundings adheres to the piston, Water drops and moisture adhering to the surface of the hair are wiped off by the flocking brush part. Further, the water can be completely prevented from entering the cylinder by scraping water droplets and water on the piston surface by the piston insertion portion before entering the cylinder. Further, when the piston is immersed in the cylinder, dust adhering to the piston surface is wiped off by the flocking brush portion, and dust is infiltrated into the cylinder by being scraped off by the piston insertion portion. Can be prevented.

  According to a second aspect of the present invention, there is provided the sliding door retracting device according to the first aspect, wherein a material of the piston insertion portion is rubber or resin.

  In the second aspect of the invention, the specific structure of the piston insertion portion is defined, and the material is preferably rubber or resin.

  According to a third aspect of the present invention, there is provided the sliding door retracting device according to the first aspect, wherein the moisture / dust countermeasure means is fixedly installed by engagement with the case at a position adjacent to the cylinder on the side where the piston enters and exits. Is done.

  According to the third aspect of the invention, the installation position of the moisture / dust countermeasure means is defined. Specifically, it is desirable that the moisture / dust control means is fixedly installed by engagement with the case at a position adjacent to the cylinder on the side where the piston enters and exits.

  As described above in detail, according to the present invention, it is possible to provide a retracting device suitable for a sliding door provided in a place where a malfunction is likely to occur in the piston type damper due to moisture or dust.

It is a front view of the sliding door 2 to which the retracting device 1 which concerns on this invention is applied. It is a principal part exploded view of the drawing-in apparatus 1 and the engaging pin 10 part. The retraction apparatus 1 is shown, (A) is a side view, (B) is a top view. 1 is a perspective view of a retracting device 1. FIG. FIG. 3 is a perspective view of a piston type damper 16 including a slider 15 and moisture / dust countermeasure means 19. The slider 15 is shown, (A) is a top view, (B) is a front view, and (C) is a side view. 3 is a perspective view showing a slider 15. FIG. (A), (B) is a perspective view which shows the assembly procedure of the slider 15. FIG. FIG. 6 is a perspective view of moisture / dust countermeasure means 19. It is an exploded view of the moisture / dust countermeasure means 19. The moisture / dust countermeasure means 19 is shown, (A) is a longitudinal sectional view and (B) is a left side view. (A)-(C) are figures which show the operating point of the drawing-in apparatus 1. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Structure of retractor 1]
The sliding door 2 shown in FIG. 1 has a panel 7 fitted in a frame 3 made up of an upper rod 3A, a lower rod 3B, a vertical rod 3C, and 3D made of a metal material such as aluminum. 6A, a sill 6B, and side frames 6C and 6D are housed in a door frame 6. Doors 4 and 4 are disposed on the lower arm 3B of the sliding door 2, and are movable (openable and closable) in the left-right direction while being guided by the duck 6A and the sill 6B.

  The upper rod 3A is provided with a retracting device 1, and an engaging pin 10 is provided on the head 6A. When the sliding door 2 is closed from the open state, the retracting device 1 and the engaging pin are provided. The sliding door 2 is retracted to the closed position by engaging with 10.

  The sliding door 2 is a sliding door installed in a humid place such as a bathroom lavatory, and is often exposed to water vapor from a bathtub. In the case of a sliding door installed in a place where there is a lot of dust, the piston-type damper may also malfunction due to dust entering the cylinder. Against water and dust.

  Hereinafter, the retractor 1 will be described in detail.

  As shown in FIG. 3, the retracting device 1 is provided so as to be slidable along the opening / closing direction of the sliding door 1 in the case 12 and the sliding guide groove 13 formed in the case 12. A slider having a proximal end engaging protrusion 14 a and a distal end engaging protrusion 14 b that are mated with each other, and having an upper end portion protruding from the case 11 so as to be engaged with and disengaged from the engaging pin 10. 15, a piston type damper 16 provided in the case 11 with the piston tip connected to the slider 15, one end locked to the slider 15, and the other end locked to the case 11 A spring member 17 that applies an urging force in the retracting direction of the sliding door 2 to the slider 15, and a moisture / dust countermeasure provided for the piston-type damper 16. It is mainly composed of 19 Metropolitan.

  As shown in FIG. 3, the case 12 is a box having a substantially rectangular cross section, and an intermediate horizontal wall 12a that is partitioned in the vertical direction is provided in a substantially half of the center of the sliding door. A spring for accommodating the spring 17 whose side is opened to the upper side along the longitudinal direction of the member and for accommodating the piston type damper 16 and whose lower side is opened downward along the longitudinal direction of the member. The accommodation space 12c is used. A locking groove 12e for locking one end of the spring 17 is provided at the sliding door central side end of the spring accommodating space 12c.

  Further, a substantially half of the case 12 on the sliding door end side is provided with a slider space 12d that is slidably provided and opens upward in the longitudinal direction of the member.

  The slide guide grooves 13 are formed in both side walls of the slider space 12d. The slide guide groove 13 is bent downward continuously in a linear guide groove 13a along the opening / closing direction of the sliding door 2 and the sliding door end side of the linear guide groove 13a. The bending guide groove 13b constitutes a temporary stop portion K of the slider 15.

  On the other hand, as shown in FIGS. 6 and 7, the slider 15 includes a piston coupling portion 15 a to which the piston tip is coupled, and a latch that extends to the lower side and that latches one end of the spring member 17. A spring engaging portion 15b formed with a groove 15d, a base end side engaging piece 15c extending above the piston connecting portion 15a and having an upper end protruding from the upper end of the case 12, and the piston connecting portion A distal end side engagement piece 15e that extends toward the sliding door end of the portion 15a, has a predetermined separation width from the base end side engagement piece 15c, and has an upper end protruding from the upper end of the case 12. It consists of and. The base end side engagement piece 15c and the front end side engagement piece 15e are provided with a separation width between which the engagement pin 10 can be engaged.

  A through hole 15f is formed in the piston connecting portion 15a of the slider 15, and a shaft member 18 (see FIG. 3) is provided through the through hole 15f and through a through hole (not shown) provided at the piston tip. By doing so, the piston tip and the slider 15 are connected. The shaft member 18 is provided with both ends projecting from both sides of the slider 15, and the projecting both ends form base end side engaging projections 14 a and 14 a that engage with the slide guide groove 13. .

  Further, front end side engaging protrusions 14b and 14b protruding from both sides are provided at the center of the front end side engaging piece 15e of the slider 15.

  More specifically, as shown in FIG. 8 (A), the distal end side engaging piece 15e includes a folded portion 15g folded back from the distal end portion of the slider 15 in a horizontal letter shape, and further downward from the distal end. And a horizontal locking piece 15i that protrudes horizontally at the tip of the hanging piece 15h and engages with the slider body. Then, the horizontal locking piece 15i is engaged with the slider body by being pushed into the immersive side to obtain the state shown in FIG. Therefore, even when the engaging pin 11 abuts against the hanging piece 15h and a force is applied when the sliding door 2 is opened and closed, the horizontal locking piece 15i serves as a retaining member, and the hanging piece 15h and the folded portion 15g Is prevented from being deformed upward so as to come out.

  The distal end side engaging piece 15e is preferably formed of an elastically deformable resin material. When the tip side engagement piece 15e formed in this way is pressed downward from the upper end portion, the upper end portion can be moved downward by elastic deformation of the folded portion at the tip of the slider. The amount of elastic deformation in the vertical direction is such that when the slider 15 is incorporated in the retracting device 1, the upper end portion of the distal end side engagement piece 15e is immersed in the case 12. It is preferable to make it possible.

  Next, the piston type damper 16 is composed of a cylinder 16A and a piston 16B, and a viscous body (silicon oil or the like) is hermetically sealed inside the cylinder 16A, and when the piston 16B moves inside the cylinder 16A, This is a mechanism that absorbs energy by generating a resistance force (damping force) according to the moving speed by the movement of the viscous body.

  In the retracting device 1, moisture / dust countermeasure means 19 is disposed at a position adjacent to the cylinder on the side where the piston 16B enters and exits.

  As shown in FIGS. 9 to 11, the moisture / dust countermeasure means 19 includes a holder 20, a flocked brush portion 21 provided in the holder 20 that protrudes toward the piston, and one end of the holder 20. And a piston insertion part 22 through which the piston is inserted in a contact state. In this case, it is desirable to arrange the piston insertion portion 22 and the flocking brush portion 21 in this order from the cylinder side. In addition, the holder 20 can be easily attached to the case 2 by adopting a unit structure in which the flocking brush portion 21 and the piston insertion portion 22 are integrally provided.

  The holder 20 has a substantially π-shaped cross section, has an attachment groove 20a for attaching the flocked brush part 21 to the inner surface of the ceiling part 20A, and has side walls 20B and 20B hanging from the ceiling part 20A on both sides. Further, the side wall 20B, 20B is connected to the side closer to the cylinder 16A, and an end wall 20C in which a piston insertion hole 20d is formed is provided. Locking claws 20b and 20b for attachment to the case 12 are formed on the outer surfaces of the side walls 20B and 20B. As shown in FIG. 4, when the holder 20 is pushed into the installation position of the case 2, the locking claws 20 b and 20 b are locked to the locking window 2 a provided in the case 2 so that they cannot be removed. It has become.

  The flocked brush portion 21 is a member in which a large number of brushes 21b, 21b, ... are implanted on one surface of the substrate 21a just like a toothbrush. As the brush 21b, chemically synthesized filaments such as nylon, PBT (polybutylene terephthalate), and PP (polypropylene), natural hairs such as pig hair and badger hair can be used. As shown in FIG. 11, the piston 16B is provided over a predetermined length range in the longitudinal direction.

  The piston insertion portion 22 is a square plate material having an opening 22a having a diameter that allows the piston 16B to be easily slidable to the diameter of the piston 16B. The material is made of rubber, resin, or the like. Become. As shown in FIG. 11, it is fixedly installed with an adhesive or the like to the adjacent position of the end wall 20C. Although the peripheral surface of the opening 22a is a flat surface in the illustrated example, it may have an arc shape or a triangular mountain shape protruding inward to reduce the contact pressure.

  If the moisture / dust countermeasure means 19 is provided adjacent to the cylinder on the side where the piston 16B enters and exits, when the piston 16B slides and protrudes from the cylinder 16A, the surrounding humidity is high, so that the surface of the piston 16B Water droplets and water adhering to condensation form. Thereafter, when the piston 16B is immersed in the cylinder 16A, water droplets and moisture adhering to the surface of the piston 16B are temporarily wiped off by the flocking brush portion 21, and then, immediately before entering the cylinder 16A. Next, water droplets and moisture adhering to the piston surface are scraped off by the piston insertion portion 22 to completely prevent moisture from entering the cylinder 16A. Further, when the piston 16B is immersed in the cylinder 16A, dust adhering to the surface of the piston is wiped off by the flocking brush portion 21, and dust is scraped off by the piston insertion portion 22 to thereby form dust in the cylinder 16A. Can be prevented from entering.

  On the other hand, the engaging pin 10 provided in the head 6A includes a base portion 5A fixed to the head 6A, and a position adjusting portion 5B provided to the base portion 5A so as to be movable in the vertical direction with screws. The engagement pin 10 is provided on the lower surface side of the position adjusting portion 5B.

[Description of operation of retractor 1]
(When opening sliding door 2)
As shown in FIG. 12A, when the sliding door 2 is in the closed state, the slider 15 is positioned on the sliding door center side, and the proximal end side engaging piece 15c and the distal end side engaging piece of the slider 15 are located. The engaging pin 10 is positioned (engaged) at a distance from the space 15e.

  When the sliding door 2 is opened from this closed state, as shown in FIG. 12 (B), the slider 15 is moved to the spring member 17 by the engagement between the engagement pin 10 and the distal end side engagement piece 15e. It is moved to the sliding door end side against the urging force. Then, when the distal end side engaging protrusion 14b of the slider 15 is guided to the bent guide groove 13b, the slider 15 swings and is temporarily stopped. Accordingly, the engagement between the distal end side engagement piece 15e and the engagement pin 11 is released. Accordingly, the sliding door 2 can be further opened as shown in FIG.

(When sliding door 2 is closed)
Next, the operation state at the time of the closing operation of the sliding door 2 will be described.

  When the closing operation is performed from the state in which the sliding door 2 is opened (FIG. 12C) to the predetermined position shown in FIG. 12B, the proximal end side engagement piece of the slider 15 that is temporarily stopped by the opening operation. The engagement pin 11 collides with 15c, and the slider 15 is swung to release the temporarily stopped state. As a result, the engagement pin 10 is positioned at a distance between the proximal end side engagement piece 15c and the distal end side engagement piece 15e of the slider 15, and the distal end side engagement piece 15e and the engagement pin 11 are engaged. Become. Thereafter, the sliding door 2 is automatically retracted to the closed position by the urging force of the spring member 17 while receiving the braking force by the piston damper 16 (FIG. 12A).

  DESCRIPTION OF SYMBOLS 1 ... Retracting device, 2 ... Sliding door, 3A ... Upper arm, 3B ... Lower arm, 3C / 3D ... Vertical shaft, 4 ... Door cart, 5A ... Base part, 5B ... Adjustment part, 6A ... Kamoi, 6B ... Sill, 6C 6D ... side frame, 7 ... panel, 10 ... engagement pin, 12 ... case, 13 ... slide guide groove, 14a ... base end side engagement protrusion, 14b ... front end side engagement protrusion, 15 ... slider, 15c ... Proximal end side engagement piece, 15e ... Front end side engagement piece, 16 ... Piston type damper, 17 ... Spring member, 19 ... Moisture / dust countermeasure means, 20 ... Holder, 21 ... Flocking brush part, 22 ... Piston insertion part , K ... Temporary stop

Claims (3)

A case, and an engagement protrusion that engages with a slide guide groove formed in the case, and has an upper end protruding from the case. A slider that is engaged with and disengaged from an engagement pin provided on the door frame side, a piston damper provided in the case with a piston tip connected to the slider, and one end of the slider on the slider In the retracting device for the sliding door, the other end is locked to the case and the spring member is configured to apply a biasing force in the sliding door retracting direction to the slider.
Moisture / dust countermeasure means is provided for the piston type damper, and the moisture / dust countermeasure means includes a flocked brush portion protruding toward the piston, and a piston insertion portion through which the piston is inserted in contact. A sliding door retracting device characterized by the above.   The sliding door retracting device according to claim 1, wherein a material of the piston insertion portion is rubber or resin.   The sliding door retracting device according to claim 1, wherein the moisture / dust countermeasure means is fixedly installed by engagement with the case at a position adjacent to the cylinder on the side where the piston enters and exits.

Images