JP4577121B2 - Automatic closing device for sliding doors - Google Patents

Description

  The present invention relates to an improvement of a sliding door automatic closing device that automatically closes a manually opened sliding door.

  As a conventional automatic door closing device, an urging means for urging the sliding door from the open position toward the closed position, and a braking force applying means for applying braking when the sliding door moves to the closed position by the urging means. Many configurations provided have been proposed (see, for example, Patent Document 1 and Patent Document 2).

JP-A-9-165968 (FIGS. 1-8) Japanese Utility Model Publication No. 6-1676 (FIG. 1-6)

  The conventional automatic closing device for sliding doors as described above is intended for particularly heavy sliding doors. Therefore, as the urging means, a constant urging force is applied for a long stroke from the opening position of the sliding door to the closing position. A load spring device or the like is used, and a long air damper or the like corresponding to the opening / closing stroke of the sliding door is used as the braking force applying means. Therefore, the operation of opening the sliding door from the closed position to the open position cannot be easily performed, the automatic closing device for the sliding door becomes large, and there are restrictions on the installation of the device, and the initial cost and running There are problems such as an increase in cost.

  Therefore, in view of the above-described situation, the present invention intends to solve the problem that the opening / closing operation can be easily performed, and there are few installation restrictions due to the simple and space-saving configuration, and the initial cost and the running cost are increased. It is in the point which provides the automatic closing device for sliding doors which was excellent in the utility which can suppress.

An automatic closing device for a sliding door according to the present invention includes a case that supports a slider so as to be slidable in a sliding door opening / closing direction, and both ends of the slider and the case are hooked, and the slider is attached to the case in the sliding door opening direction. A tension coil spring incorporated in the case, and a piston rod and a cylinder connected to the slider and the case, respectively, to dissipate the kinetic energy of the slider biased by the tension coil spring. An air damper incorporated in the case that brakes the slider, and a concave portion that is supported by the slider so as to be rotatable about an axis substantially orthogonal to the sliding door surface and protrudes from the upper surface of the case and opens upward. A rotation member having a substantially U-shape when viewed from the front, and a latching piece of the rotation member is latched on a latching portion provided on the inner surface of the case. An automatic sliding door for an integrated sliding door that can be used in a latched state in which the tension coil spring is extended and a latch-released state in which the latch is released and the case is fixed to the upper part of the sliding door. When the sliding device is moved in the closing direction along the upper frame with which the upper part of the sliding door engages, the driving member provided on the lower side of the upper frame at a predetermined position in the sliding door opening / closing direction The moving member contacts and the driving member engages with the recess of the rotating member, and the rotating member rotates to enter the latch release state, and the biasing force by the tension coil spring causes the slider to move against the slider. The case and the sliding door are urged in the closing direction so that the sliding door is in the closed state, and when the sliding door is moved in the opening direction from the closed state, the rotating member rotates to rotate the driving member and the rotating member Ri Do and the locking state engagement is released between the drive The member is a pin whose axial direction is substantially orthogonal to the sliding door surface, and elastically supports the claw member on the sliding door closing side of the substantially U-shaped rotating member in front view so as to be slidable in a substantially vertical direction. the sliding door closed side surface of the member is shall such as an inclined surface inclined sliding door opening side toward the upper side.

  According to the automatic closing device for a sliding door according to the present invention, a case that supports the slider so as to be slidable in the sliding door opening and closing direction, both ends of the slider and the case are hooked, and the slider is moved in the sliding door opening direction. A tension coil spring incorporated in the case, and a piston rod and a cylinder connected to the slider and the case, respectively, to dissipate the kinetic energy of the slider biased by the tension coil spring An air damper incorporated in the case for braking the slider, and supported by the slider so as to be rotatable about an axis substantially perpendicular to the sliding door surface and projecting from the upper surface of the case and opening upward. A rotation member having a substantially U-shape in front view with a recess formed therein, and a latching piece of the rotation member is latched to a latching portion provided on the inner surface of the case Integral type sliding door that can be used with the case fixed to the upper part of the sliding door, which can be in a latched state in which the tension coil spring is extended and in a latched released state in which the latch is released When the sliding door is moved in the closing direction along the upper frame with which the upper part of the sliding door is engaged, the drive member provided on the lower side of the upper frame at a predetermined position in the sliding door opening / closing direction is used. When the rotating member comes into contact, the driving member engages with the concave portion of the rotating member, and the rotating member rotates to enter the latch release state, and the urging force of the tension coil spring causes the slider to move. When the case and the sliding door are urged in the closing direction to close the sliding door, and the sliding door is moved in the opening direction from the closed state, the rotating member rotates to rotate the driving member and the rotating member. The engagement with the moving member is released and the hooked state is reached. , In the latching state, since the tension coil spring and air damper is not operated, can be moved lightly in the closing direction the sliding door. Then, when the sliding member is moved in the closing direction and the rotating member comes into contact with the driving member, the unlocking state is established, so that the tension coil spring and the air damper are operated. Therefore, even if the sliding door is not completely closed, the sliding door automatic closing device operates from the position where the non-locking state is set (for example, the position where the sliding door is opened by about 50 mm to 80 mm), and the sliding door is reliably closed. Further, even if the sliding door is strongly closed by the action of the air damper, since the momentum is attenuated, the sliding door is quietly closed without generating noise. Furthermore, the simple and compact configuration can reduce installation restrictions and suppress an increase in initial cost and running cost. Furthermore, since it has a compact configuration, it can be accommodated in, for example, a cutout portion in the center in the width direction of the upper surface of the sliding door, and is not visually recognized from the front and rear surface sides of the sliding door, so that it does not give a sense of incongruity and pressure, Can be improved.

Further, the drive member is a pin whose axial direction is substantially orthogonal to the sliding door surface, and elastically supports the claw member on the sliding door closing side of the substantially U-shaped rotating member in front view so as to be slidable in a substantially vertical direction. together, since the inclined surface inclined sliding door opening side toward the sliding door closed side surface of the claw member upwardly, with the sliding door is the driving member in the recess of the rotary member opening not engaged, If the sliding door is closed unexpectedly when the sliding door is closed, the pin, which is the driving member, comes into contact with the inclined surface of the claw member on the sliding door closing side, the claw member is lowered, and the pin is In a state where the claw member on the sliding door closing side and the claw member on the sliding door closing side are positioned, the claw member on the sliding door closing side rises and the pin engages with the concave portion of the rotating member, so that the normal state Can be easily restored.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all the embodiments that satisfy the requirements described in the claims. It is a waste. In addition, in this specification, the direction (side) which closes a sliding door is made into a sliding door closing direction (side), and the direction (side) which opens a sliding door is made into a sliding door opening direction (side). Moreover, let the direction orthogonal to a sliding door surface be the front-back direction, and let the figure seen from the front be a front view.

  FIG. 1 is a longitudinal front view showing an example of a sliding door in which an automatic closing device for sliding door according to an embodiment of the present invention is used. 2 to 4 are explanatory views showing the configuration of the sliding door automatic closing device, FIG. 2 (a) is a front view, FIG. 2 (b) is a side view, and FIG. 3 is an arrow view of FIG. XX sectional drawing and FIG. 4 are exploded perspective views. Further, FIGS. 5 and 6 are operation explanatory views of the sliding door automatic closing device, and FIG. 5 (a) shows a state in which the sliding member is moved in the sliding door closing direction and the rotating member is not in contact with the driving member. FIG. 5B illustrates a state in which the rotating member is in contact with the driving member, and FIG. 6A illustrates a latch release state in which the rotating member is in contact with the driving member and the rotating member is rotated. 6 (b) shows a state in which the sliding door is closed by the urging force of the tension coil spring in the latch release state.

  As shown in FIGS. 1 and 2B, the sliding door SD made of wood or aluminum alloy has an upper frame F attached to the lower surface of the wall W on the upper side of the opening S with a door wheel (not shown) attached to the lower part thereof. The sliding door opening / closing direction (see arrow B in FIG. 1 indicating the sliding door opening direction and arrow A in FIG. 1 indicating the sliding door closing direction) along a lower frame (not shown) attached to the upper surface of the lower wall W of the opening S. ) And the opening S of the wall W can be opened and closed by the sliding door SD.

  As shown in FIGS. 1 and 2, the sliding door automatic closing device 1 according to the embodiment of the present invention is used as an integrated type in which functional parts are housed in cases 2 and 3 that are used by being attached to the sliding door SD. It has a compact and simple configuration that can be accommodated in the notch G at the center in the width direction of the upper surface of the sliding door SD and can be easily attached. Therefore, it is practical with few restrictions on installation and a wide range of application, and since it is not visually recognized from the front and rear surface side of the sliding door, it is possible to improve the design without giving a sense of incongruity and pressure.

  The cases 2 and 3 are easily integrated as will be described later and attached to the upper surface of the sliding door SD. On the inner surfaces of the cases 2 and 3, slider support portions 11 and 11 are formed on the sliding door closing side, and cylinder support portions 12 and 12 are formed on the sliding door opening side. Therefore, the slider 4 is in the sliding door opening / closing direction with respect to the cases 2 and 3 by the slider support portions 11 and 11 (see arrow B in FIG. 1 indicating the sliding door opening direction and arrow A in FIG. 1 indicating the sliding door closing direction). Is slidably supported. The cylinder 8 of the air damper 6 is supported by the cylinder support portions 12 and 12 and is fixed to the cases 2 and 3 on the sliding door opening side of the slider 4.

  The piston rod 7 of the air damper 6 is movable in the sliding door opening / closing direction with respect to the cylinder 8 and is provided on the sliding door closing side of the cylinder 8. Since the front end 7a of the piston rod 7 on the sliding door closing side engages with the engaging portion 14a of the support portion 14 provided on the sliding door closing side upper portion of the slider 4, the piston rod 7 operates integrally with the slider 4. . As shown in FIG. 3, the locking piece 4 a formed on the sliding door closing side of the slider 4 passes through the slider 4 having a substantially U-shaped cross section that opens to the case 2 side, and the sliding door closing side of the tension coil spring 5. The terminal 5a is locked. Further, the terminal 5 b on the sliding door opening side of the tension coil spring 5 is locked to the locking piece 3 b formed on the sliding door opening side of the case 3. Therefore, the slider 4 is urged in the sliding door opening direction (see arrow B in FIG. 1) with respect to the cases 2 and 3 by the urging force of the tension coil spring 5.

  When the piston rod 7 of the air damper 6 moves together with the slider 4 in the sliding door opening direction (see arrow B in FIG. 1), the air in the cylinder 8 is compressed, and the air is provided on the sliding door opening side of the cylinder 8. It passes through the hole 8c and escapes from the lower part of the cylinder 8 on the sliding door opening side. Therefore, the momentum of the relative movement of the slider 4 with respect to the cases 2 and 3 (the kinetic energy of the slider 4 due to the biasing force of the spring 5) is dissipated into heat by the action of the air damper 6, so Movement is braked.

  And the braking force of the relative movement of the slider 4 with respect to the cases 2 and 3 by such an air damper 6 adjusts the amount of air that escapes from the small hole 8c by the adjusting screw 8a provided on the sliding door opening side of the cylinder 8. Can be easily adjusted. Further, since the air in the cylinder 8 of the air damper 6 is surely released through the small hole 8c, the piston rod 7 is surely pushed in the direction of the cylinder 8 even if the spring constant of the tension coil spring 5 is weak. Furthermore, since the sound generated when air escapes from the small hole 8c is reduced by, for example, a felt silencer 8b as shown in FIGS. 5 and 6, the magnitude of the air sound becomes a problem. There is no.

  Moreover, as shown in FIGS. 4-6, the oil-impregnated materials 10 and 10 which make oil soak into the rubber seal 9 and felt are attached to the sliding door opening side of the piston rod 7 of the air damper 6. The seal 9 and the oil-impregnated materials 10 and 10 slide with the inner wall of the cylinder 8. The oil-impregnated materials 10 and 10 reduce the friction between the seal 9 and the inner wall of the cylinder 8 and reduce the amount of wear, thereby improving the durability and ensuring the reliability of the operation of the air damper 6 over a long period of time. be able to.

  As shown in FIG. 4, a shaft 15 that is substantially orthogonal to the sliding door surface projects from the surface of the support portion 14 on the sliding door closing side upper portion of the slider 4 that faces the case 2. The engagement hole 25 of the sliding door opening side claw member 22 which is a base part of the member 21 is externally fitted. A sliding door closing side claw member 23 is fitted in a recess 22a formed on the sliding door closing side of the sliding door opening side claw member 22 and opened upward. The sliding door closing side claw member 23 includes a compression coil spring 26 and a support. The pin 27 is elastically supported so as to be slidable substantially vertically with respect to the sliding door opening side claw member 22.

  As shown in FIGS. 2A, 5, and 6, the rotating member 21 including the sliding door opening side claw member 22 and the sliding door closing side claw member 23 is arranged around an axis 15 substantially orthogonal to the sliding door surface. It is substantially U-shaped when viewed from the front, and is formed with a recess C that is supported by the slider 4 so as to be rotatable and projects from the upper surfaces of the cases 2 and 3 and opens upward. And the latching piece 24 substantially orthogonal to a sliding door surface is protrudingly provided by the surface facing the case 2 in the sliding door closing side rather than the said engagement hole 25 (shaft 15) of the sliding door opening side nail | claw member 22, When the latching piece 24 is latched by the latching portion 13 formed inside the case 2, the latching state will be described later.

  As shown in FIG. 4, the latching portion 13 formed inside the case 2 includes a lower substantially arc-shaped curved portion 13a and a horizontal portion 13b extending in the sliding door opening / closing direction connected to the curved portion 13a. Become. Therefore, the latching piece 24 of the pivoting member 21 is positioned on the lower curved portion 13a of the latching portion 13, and the latching state in which the pivoting member 21 is latched by the latching portion 13 (see FIG. 2). (See the dotted line rotating member 21 <D>.) And the latching release state in which the latching piece 24 of the pivoting member 21 is positioned on the horizontal portion 13 b on the upper side of the latching portion 13 (the time indicated by the solid line in FIG. 2). The moving member 21 <E> can be easily switched by rotating the rotating member 21 around the axis 15 substantially orthogonal to the sliding door surface of the slider 4. In the unlocking state, the sliding door opening side surface of the sliding door opening side claw member 22 of the rotating member 21 is abutted against the contact portion 14 b on the sliding door closing side of the support portion 14 of the slider 4. The sliding door closing side surface of the sliding door opening side claw member 22 that forms the concave portion C of the sliding door and the sliding door opening side surface of the sliding door closing side claw portion 23 are kept substantially vertical.

  As shown in FIG. 4, the case 2 has engagement recesses 2a,..., And the case 3 has engagement pieces 3a that engage with the engagement recesses 2a,. The integrated sliding door automatic closing device 1 in which the slider 4, the tension coil spring 5, the air damper 6 and the like are incorporated in the cases 2 and 3 can be easily assembled and disassembled. Therefore, assemblability and maintainability can be improved, and an increase in initial cost and running cost can be suppressed including a simple and compact configuration. Further, such an integrated sliding door automatic closing device 1 is housed in a notch G (see FIG. 2B) at the center in the width direction of the upper surface of the sliding door SD, as shown in FIGS. Can be easily attached to the sliding door SD using the attachment holes 16 and 17 shown in FIG.

  As shown in FIGS. 1 and 2B, the upper frame F is supported by the support frame 32 at a predetermined position in the sliding door opening / closing direction (distance H from the opening end K in FIG. 1). A pin 31 as a driving member is provided. Here, the predetermined position (distance H from the opening end K in FIG. 1) of the pin 31 as the driving member in the sliding door opening / closing direction is set to, for example, about 50 mm to 80 mm. As shown in FIG. 4, the support frame body 32 that supports the pins 31 is fixed to the upper frame F by mounting screws using the mounting holes 32a and 32a.

  Next, the operation of the sliding door SD using the sliding door automatic closing device 1 will be described. First, the operation of closing the sliding door SD will be described. In the latched state, since the tension coil spring 5 and the air damper 6 do not operate, the sliding door SD can be easily moved in the sliding door opening / closing direction. In the state of FIG. 5A in which the opening distance L of the sliding door SD in FIG. 1 is larger than the distance H from the opening end K of the pin 31, the sliding door SD is moved in the sliding door closing direction as indicated by an arrow in the figure. Then, as shown in FIG. 5B, the pin 31 as the driving member comes into contact with the sliding door closed side surface of the sliding door opening side claw member 22 of the rotating member 21. Further, when the sliding door SD is moved in the sliding door closing direction, the rotating member 21 is rotated by the pin 31 and the claw members 22 and 23 are erected as shown in FIG. The pin 31 engages with the recess C to be opened.

  In this state, the latching piece 24 of the rotating member 21 is moved from the curved portion 13a of the latching portion 13 to the horizontal portion 13b and is in the latched release state, so that the tension coil spring 5 and the air damper 6 are Operate. Accordingly, as shown in FIG. 6B, the rotating member 21 is engaged with the pin 31 by the reaction of the urging force of the tension coil spring 5 that urges the slider 4 in the sliding door opening direction with respect to the cases 2 and 3. In contrast to the slider 4 whose movement in the sliding door opening / closing direction is restricted, the cases 2 and 3 of the sliding door automatic closing device 1 and the sliding door SD to which the cases 2 and 3 are fixed move in the sliding door closing direction. Automatically closes. Further, as described above, air in the cylinder 8 of the air damper 6 is surely released through the small hole 8c, and the piston rod 7 is surely pushed in the direction of the cylinder 8, so that the sliding door SD is surely closed. Furthermore, even if the sliding door SD is strongly closed by the action of the air damper 6, the momentum is attenuated, so that the sliding door SD can be closed quietly without generating noise.

  Next, an operation for opening the sliding door SD will be described. In the closed state of the sliding door SD in FIG. 6B, the movement of the slider 4 is restricted because the rotating member 21 is engaged with the pin 31. Accordingly, when the sliding door SD is moved in the sliding door opening direction, the latching piece of the rotating member 21 in a state where the sliding door opening side surface of the sliding door closing side claw member 23 of the rotating member 21 is pushed to the sliding door closing side by the pin 31. The sliding piece 24 and the latching portion 13 move relative to each other while the horizontal portion 13b of the latching portion 13 of the case 2 slides, and the state shown in FIG.

  Further, when the sliding door SD is moved in the sliding door opening direction, the sliding door opening side surface of the sliding door closing side claw member 23 is pushed to the sliding door closing side by the pin 31, so that the rotating member 21 rotates as shown in FIG. The latching piece 24 of the pivoting member 21 moves from the horizontal part 13b of the latching part 13 to the curved part 13a, the engagement between the pin 31 and the pivoting member 21 is released, and the latching state is established. Become. In this state, since the tension coil spring 5 and the air damper 6 do not operate, the sliding door SD can be easily moved in the sliding door opening direction.

  Next, the operation of the sliding door closing side claw member 23 that is elastically supported so as to be slidable substantially vertically in the rotating member 21 as described above will be described. The sliding door closing side surface of the sliding door closing side claw member 23 is formed with an inclined surface 23a that inclines toward the sliding door opening side as it goes upward. Therefore, for example, even when the sliding door SD is opened and the pin 31 as the driving member is not engaged with the concave portion C of the rotating member 21, the sliding door SD can be moved even when the sliding door SD is unexpectedly brought into the non-hanging state. When closed, the pin 31 comes into contact with the inclined surface 23 a of the sliding door closing claw member 23, the claw member 23 is lowered, and the pin 31 is positioned between the sliding door opening claw member 22 and the sliding door closing claw member 23. Since the sliding door closing side claw member 23 is raised and the pin 31 is engaged with the concave portion C of the rotating member 21, it can be easily returned to the normal state.

  Cases 2 and 3, slider 4, piston rod 7 and cylinder 8 of air damper 6, claw members 22 and 23 of rotating member 21, etc. constituting sliding door automatic closing device 1 in the above description are made of, for example, nylon, polyacetal, Since a molded product of a synthetic resin such as polypropylene, polyethylene terephthalate, or ABS can be obtained, the number of parts can be reduced and the configuration can be simplified, and the operation sound can be reduced.

It is a vertical front view which shows the example of the sliding door in which the automatic closing device for sliding doors which concerns on embodiment of this invention was used. It is explanatory drawing which shows the structure of the automatic closing device for sliding doors concerning embodiment of this invention, (a) is a front view, (b) is a side view. It is arrow XX sectional drawing of FIG. It is an exploded perspective view of the automatic closing device for sliding doors concerning an embodiment of the invention. It is operation | movement explanatory drawing of the automatic closing device for sliding doors which concerns on embodiment of this invention, (a) moves a sliding door to a sliding door closing direction, (b) the state which the rotation member is not contact | abutting to a drive member. Shows a state in which the rotating member is in contact with the driving member. It is operation | movement explanatory drawing of the automatic closing device for sliding doors concerning embodiment of this invention, (a) is a latch release state which the rotation member contacted the drive member and this rotation member rotated (b) ) Shows a state where the sliding door is closed by the urging force of the tension coil spring in the latch release state.

Explanation of symbols

A Sliding door closing direction B Sliding door opening direction C Recessed portion opened substantially upward D Engagement state E Engagement release state F Upper frame G Notch portion H in the center in the width direction of the upper surface of the sliding door Distance K from the opening end of the drive member Opening end L Opening distance S Opening SD Sliding door W Wall 1 Sliding door automatic closing device 2, 3 Case 2a Engaging recess 3a Engaging piece 3b Engaging piece 4 Slider 4a Engaging piece 5 Tension coil springs 5a, 5b Terminal 6 Air damper 7 Piston rod 8 Cylinder 8a Adjusting screw 8b Silencer 8c Small hole 9 Seal 10 Oil-impregnated material 11 Slider support 12 Cylinder support 13 Hook 14 Support 14a Engage 14b Lock 15 Axes 16, 17 Installation Hole 21 Rotating member 22 Sliding door opening side claw member 23 Sliding door closing side claw member 22a Recess 23a Inclined surface 24 Latching piece 25 Engaging hole 26 Compression coil spring 27 Support pin 31 Drive member (pin)
32 Support frame 32a Mounting hole

Claims (1)

A case that supports the slider so that it can slide in the sliding door opening and closing direction;
Both ends of the slider and the case are hooked, and a tension coil spring incorporated in the case for biasing the slider in the sliding door opening direction with respect to the case;
An air damper incorporated in the case, which comprises a piston rod and a cylinder connected to the slider and the case, respectively, and dissipates the kinetic energy of the slider urged by the tension coil spring to brake the slider. When,
A pivot member that is supported by the slider so as to be pivotable about an axis substantially orthogonal to the sliding door surface and protrudes from the upper surface of the case, and is formed with a concave portion that is opened substantially upward;
A latching state in which the latching piece of the rotating member is latched on a latching portion provided on the inner surface of the case, and the tension coil spring is held in an extended state, and the latch is released An integrated automatic closing device for sliding doors that can be used in a released state and is fixed to the upper part of the sliding door,
When the sliding door is moved in the closing direction along the upper frame with which the upper portion of the sliding door is engaged, the rotating member comes into contact with the driving member provided on the lower side of the upper frame at a predetermined position in the sliding door opening / closing direction. The drive member engages with the recess of the rotating member, the rotating member rotates to enter the latch release state, and the case and the sliding door are moved against the slider by the urging force of the tension coil spring. When the sliding door is biased in the closing direction to be in a closed state, and the sliding door is moved in the opening direction from the closed state, the rotating member is rotated and the engagement between the driving member and the rotating member is released. Ri is Do and the latched state is, the drive member is a pin whose axial direction is substantially perpendicular to the sliding door side, substantially vertical flange members of the sliding door closing side of the front view substantially U-shaped pivot member Elastically slidable in the direction, and the sliding door closed side of the claw member Sliding door automatic closing device ing as an inclined surface inclined sliding door opening side in accordance with.

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