JP5588652B2 - Sliding door closer - Google Patents

Description

  The present invention relates to a sliding door closer used for a semi-automatic sliding door.

  As is well known, a semi-automatic door is a mechanism that automatically closes a sliding door that has been opened by hand. The sliding door closer that is the closing mechanism is roughly classified into a weight type and a spring type, and a spring type is advantageous from the viewpoint of the scale of the apparatus.

  The applicant of the present application has created a sliding door closer that can easily secure a large opening / closing stroke corresponding to the recent increase in the size of the sliding door and that is capable of adjusting the length and has an excellent design (Japanese Patent No. 3681491).

  The sliding door closer according to Japanese Patent No. 3681491 is “in a sliding door closer that automatically closes a sliding door, a cylindrical outer case in which a slit is formed in the longitudinal direction, and the cylinder portion is housed in the outer case. The piston rod part protrudes from the cylinder part to the case one end side, and the connecting pin at the tip part of the piston rod part is connected to the sliding door through the slit, and the piston rod part of the damper is connected to the case. A first spring that elastically pulls toward the other end side, and a second spring that elastically pulls the cylinder portion of the damper toward the other end side of the case and whose pulling force is greater than the pulling force of the first spring; And as said 1st spring, one end part is connected to the front-end | tip part of the piston rod part of a damper, and an intermediate part is located in the base end side of a damper. Via a relay portion provided in the other end parts case, it has a coil spring the other end of which is connected to one end of the outer case "is intended.

Japanese Patent No. 3681491

  However, the sliding door closer according to Japanese Patent No. 3681491 has no particular problem in terms of operation and function, can cope with an increase in the size of the sliding door, and has an excellent design property. Since one spring or a second spring is required, and the first spring and the second spring must be prepared with different tensile forces, there is a problem that the number of parts increases.

  The present invention was devised in view of the above circumstances, and can be provided at a lower cost while taking over the advantages of the sliding door closer that can cope with an increase in the size of the sliding door and has excellent design properties. The purpose is to provide a closer.

The sliding door closer according to the present invention is a sliding door closer that automatically closes the sliding door. A cylindrical outer case having a slit formed in the longitudinal direction and the outer case are accommodated in the outer case, and the external door is opened and closed according to the opening and closing of the sliding door. A traveling body that moves within the case, an elastic body having one end connected to the traveling body and the other end connected to the outer case in order to elastically pull the traveling body in the closing direction of the sliding door, and the outer case from the traveling body A relay roller that is located on the closing direction side of the sliding door and makes the U-turn of the elastic body, and the traveling body includes a traveling body main body, a large wheel that is rotatably attached to the traveling body main body, mounted on the traveling body, when moving in the opening direction of the sliding door is free rotation, and one-way rotary damper rotates resistance when moving in the closing direction, the unidirectional A damper wheel mounted to over tally damper, with supporting the wheel shaft of the large wheel has a journaled blocks to be movable in the vertical direction, the resistance to the force of the unidirectional rotary damper By adjusting the force with which the large wheel is pressed against the inner lower surface of the outer case by the vertical movement of the shaft support block , the damper wheel is less than the force by which the stretched elastic body contracts. By adjusting the force that presses against the inner lower surface of the outer case, the resistance of the unidirectional rotary damper is adjusted to change the speed when the sliding door is closed.

  The sliding door closer according to the present invention uses a unidirectional rotary damper to control the speed of movement of the traveling body in the closing direction, so the number of parts can be significantly reduced compared to the conventional one. It was. For this reason, significant cost reduction was achieved. In addition, as the number of parts decreased, the product life could be extended.

It is a schematic exploded perspective view of the sliding door closer concerning an embodiment of the invention. It is a schematic perspective view of the traveling body which comprises the sliding door closer which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing of the traveling body which comprises the sliding door closer which concerns on embodiment of this invention, Comprising: The same figure (A) is a schematic plan view, The same figure (B) is a schematic front view, The same figure (C) is schematic. FIG. It is a schematic perspective view of the traveling body main body which comprises the sliding door closer which concerns on embodiment of this invention. It is drawing of the traveling body which comprises the sliding door closer which concerns on embodiment of this invention, Comprising: It is a schematic perspective view for demonstrating adjustment of the resistance force of rotation of a large sized wheel. It is a schematic perspective view of the stopper which comprises the sliding door closer which concerns on embodiment of this invention.

A sliding door closer according to an embodiment of the present invention is a sliding door closer that automatically closes a sliding door, and has a cylindrical outer case 100 in which a slit 110 is formed in the longitudinal direction, and is housed in the outer case 100. The traveling body 200 that moves in the outer case 100 in response to opening and closing of the sliding door (not shown), and one end of the traveling body 200 and the other end of the outer case 200 are elastically pulled in the closing direction of the sliding door. A coil spring 300 as an elastic body connected to each of 100, and a relay roller 400 that is located on the outer case 100 on the sliding door closing side from the traveling body 200 and makes the coil spring 300 U-turn, The traveling body 200 includes a traveling body main body 210, a large wheel 230 rotatably attached to the traveling body main body 210, and a small wheel. And Lumpur 220, mounted on the traveling body 210, when moving in the opening direction of the sliding door is free rotation, the one-way rotary damper 240 which rotates in resistance when moving in the closing direction, this The unidirectional rotary damper includes a damper wheel attached to the unidirectional rotary damper, and a shaft support block 215 that supports the wheel shaft of the large wheel 230 and is movable in the vertical direction. The force that the damper 240 resists is smaller than the force that the extended coil spring 300 contracts, and the force that the large wheel 230 presses against the inner lower surface of the outer case 100 by the vertical movement of the shaft support block 215. by adjusting the unidirectional rotor by adjusting the force damper wheel 241 is pressed against the inner lower surface of the outer case 100 Adjust the resistance of over damper 240, thereby enabling varying the speed at which the sliding door is closed.

  The outer case 100 includes a case main body 120 made of a square pipe made of extruded material of resin such as polyvinyl chloride or aluminum, and mounting brackets 130 attached to both ends of the case main body 120. A slit 110 is formed on the lower surface of the case body 120 from the center to one end. Further, although not shown in the drawing, an opening for dropping a connecting pin 250 (to be described later) is provided on the upper surface of the case body 120. The length of the case main body 120 can be adapted to the maximum opening. Since all the sliding door closer mechanisms, for example, the traveling body 200 and the like are housed in the outer case 100, fine parts cannot be seen from the outside. For this reason, this sliding door closer is also excellent in design which does not give a complicated impression. Further, since the connecting pin 250 is detachable, the connecting pin 250 is retracted inside the outer case 100 during packing, so that efficient packing can be performed.

  The mounting bracket 130 is detachably attached to both end portions of the case body 120, and the screwing portion 131 can be directed to either side by being directed in an arbitrary direction when being attached. In addition, ceiling mounting is also possible by turning the screwing portion 131 upward.

  The traveling body 200 includes a traveling body main body 210, two sets of wheels 220 and 230 rotatably attached to the traveling body main body 210, and a unidirectional rotary damper 240 attached to the traveling body main body 210. doing.

  First, the traveling body main body 210 is formed of a synthetic resin in a horizontally long substantially rectangular parallelepiped shape, and is provided with a damper recess 211 for attaching the unidirectional rotary damper 240 as shown in FIG.

  In the vicinity of the damper recess 211 of the traveling body main body 210, an upward substantially concave spring receiver 212 for receiving a coil spring 300 described later is provided.

Further, a concave portion 213 for engaging a stopper 500 described later is provided on the leading end side of the traveling body main body 210 in the opening direction (the sliding door opening direction).
Further, in the vicinity of the recess 213, a two-stage opening 214 is formed in the vertical direction. This opening 214 is a portion into which the connecting pin 250 is inserted. When the connecting pin 250 is inserted into the opening 214, the tip of the connecting pin 250 protrudes from the traveling body 200 and also protrudes from the slit 110 of the outer case 100 to which the traveling body 200 is attached, and is connected to the upper edge of the sliding door. It is. That is, the sliding door and the traveling body 200 are connected by the connecting pin 250.

  On the other hand, a shaft support block 215 for supporting a large wheel 230 that is one of the wheels is provided on the opening direction (opening direction of the sliding door) side of the recess 213. The shaft support block 215 is attached so as to fit into the block recess 216 of the traveling body main body 210 and is connected to the traveling body main body 210 by a horizontal shaft 215A. The shaft support block 215 moves in a substantially vertical direction about the horizontal shaft 215A. A nut 215B is embedded in the upper surface of the free end side (the sliding door opening direction side) of the shaft support block 215, and a bolt (not shown) is screwed into the nut 215B from the lower surface side of the traveling body main body 210. Yes. That is, the shaft support block 215 moves substantially vertically about the horizontal shaft 215A by the screwed state of the nut 215B and the bolt. Further, a spring (not shown) for urging the shaft support block 215 upward is inserted into the bolt, and the shaft support block 215 is urged upward.

The shaft support block 215 is formed with a bearing recess 215 </ b> C for receiving a wheel shaft (not shown) for connecting the large wheel 230 downward. The position of the large wheel 230, that is, the force by which the large wheel 230 is pressed against the inner lower surface of the outer case 100 by changing the pressing condition of the wheel shaft of the large wheel 230 of the pivot block 215 with the bolt and nut 215B. It can be adjusted. As shown in FIG. 5, when the pivot support block 215 is positioned above that shown in FIG. 2, the force with which the large wheel 230 is pressed against the inner lower surface of the outer case 100 is set weak.

  Further, on both opposite side surfaces of the traveling body main body 210 in the closing direction (closing door closing direction) side, wheel convex portions 217 are provided, and a pair of small wheels 220 as one of the wheels is provided here. It is mounted for rotation. The pair of small wheels 220 are connected by a wheel shaft (not shown).

  The large wheel 230 and the small wheel 220 that constitute the wheel are partly lower than the lower surface of the traveling body main body 210 so as to contact the inner lower surface of the outer case 100 when the traveling body 200 is built in the outer case 100. It is located on the lower side.

  Further, a projecting portion 218 that abuts on the terminal end portion of the slit 110 when the sliding door is in a closed state protrudes from the lower surface of the traveling body main body 210.

  A unidirectional rotary damper 240 is attached to the damper recess 211. A damper wheel 241 that is in contact with the inner upper surface of the outer case 100 is attached to the unidirectional rotary damper 240. The unidirectional rotary damper 240 rotates freely when the traveling body 200 moves in the opening direction of the sliding door, and rotates in resistance when moving in the closing direction.

  By the way, in the closing direction of the outer case 100 (the closing direction of the sliding door), the relay roller 400 is rotatably supported from the inner lower surface of the outer case 100. This relay roller 400 makes the coil spring 300 U-turn.

  The coil spring 300 that is U-turned by the relay roller 400 has one end connected to the traveling body 200 and the other end connected to the outer case 100. The coupling position of the outer case 100 is determined so that the coil spring 300 is slightly extended or has a natural length when the sliding door is in a completely closed state. Since the coil spring 300 is received by the spring receiver 212 on the opening direction side of the relay roller 400, the coil spring 300 is not bent.

  The outer case 100 is provided with a stopper 500 that engages the traveling body 200 with the sliding door opened to the maximum. As shown in FIG. 6, the stopper 500 includes a pair of leaf springs 510 each having an inward convex portion 511 formed at the tip, a stopper body 520 to which the leaf spring 511 is attached, and the stopper body 520 as an outer case 100. And a fixing tool 530 to be fixed.

  The stopper main body 520 is, for example, a rectangular parallelepiped block made of synthetic resin, and a nut hole 521 for storing a nut (not shown) that engages with a bolt (not shown) constituting the fixture 530 at the center. It has been established. In addition to the bolt, the fixture 530 also includes a clamping plate 531 that sandwiches the lower surface of the outer case 100 with the stopper body 520. The clamping plate 531 has an opening (not shown) through which the bolt passes. The sandwiching plate 531 is formed with a bent piece that fits into the slit 110.

  The stopper 500 configured as described above is fixed to the outer case 100 by the fixing tool 530. When the sliding door is opened to the maximum, the convex portion 511 of the leaf spring 510 engages with the concave portion 213 of the traveling body 200 (the traveling body main body 210), so that the traveling body is not pulled back in the closing direction by the coil spring 300.

Now, the usage method and function of the above-described sliding door closer will be described.
First, the outer case 100 is assembled. The length of the case body 120 is designed to be compatible with the recent wide frontage, so it is set by cutting one end according to the width of the space to install the sliding door as necessary before assembly. To do. Thereafter, mounting brackets 130 are attached to both ends of the case body 120.

  As described above, the orientation of the screwing portion 131 can be changed by directing the mounting bracket 130 in an arbitrary direction when the outer case 100 is attached. Thereafter, the outer case 100 is attached along the upper side of the space for attaching the sliding door, and the traveling body 200 and the sliding door are connected via the connecting pin 250.

  When the sliding door is in a closed state, that is, in a state where the sliding door is not opened, the traveling body 200 is in a state in which the coil spring 300 is most contracted in the outer case 100. At the same time, the projecting portion 218 of the traveling body 200 abuts on the end portion of the slit 110, thereby preventing the traveling body 200 from moving further. If this protrusion 218 is not present and further movement of the traveling body 200 cannot be suppressed, the traveling body 200 may come into contact with the relay roller 400 and damage the relay roller 400.

  When the sliding door is opened from such a state, the traveling body 200 moves in the opening direction while extending the coil spring 300. During the movement in the opening direction, the small wheel 220, the large wheel 230, and the damper wheel 241 of the unidirectional rotary damper 240 are in a free state.

  When the sliding door is opened to the maximum extent, the convex portion 511 of the leaf spring 510 of the stopper 500 is engaged with the concave portion 213 of the traveling body 200 (the traveling body main body 210), and the sliding door is maintained at the maximum open state.

When the sliding door is moved in the closing direction, the engagement between the concave portion 213 and the convex portion 511 is released, and the sliding door is pulled in the closing direction by the force of the coil spring 300.
At this time, although the small wheel 220 and the large wheel 230 are in a free state, the unidirectional rotary damper 240 rotates while resisting, and the resisting force of the unidirectional rotary damper 240 is exerted on the extended coil spring 300. Therefore, the sliding door is closed smoothly and safely without being vigorously pulled by the force of the coil spring 300. Further, by adjusting the force with which the large wheel 230 is in pressure contact with the inner lower surface of the outer case 100, the force with which the damper wheel 241 attached to the unidirectional rotary damper 240 is in contact with the inner upper surface of the outer case 100 is adjusted. Therefore, the speed when the sliding door is closed can be changed.

  In the above-described embodiment, the coil spring 300 is described as an elastic body that pulls the traveling body 200, but the elastic body is not limited to the coil spring 300. For example, it goes without saying that a rubber string or the like may be used.

DESCRIPTION OF SYMBOLS 100 Outer case 110 Slit 200 Running body 210 Running body main body 220 Small wheel (wheel)
230 Large wheel
240 Unidirectional rotary damper 300 Coil spring 400 Relay roller

Claims (5)

In the sliding door closer that automatically closes the sliding door, a cylindrical outer case with a slit formed in the longitudinal direction, and a traveling body that is housed in the outer case and moves in the outer case according to opening and closing of the sliding door, An elastic body having one end connected to the traveling body and the other end connected to the outer case in order to elastically pull the traveling body in the closing direction of the sliding door; and the outer case is positioned closer to the sliding door than the traveling body. A relay roller for U-turning the elastic body, and the traveling body is attached to the traveling body main body, a large wheel rotatably attached to the traveling body main body, and the traveling body main body. when moving in the opening direction of the sliding door is free rotation, and one-way rotary damper when moving in the closing direction to rotate resistor, mounted to the unidirectional rotary damper Is a wheel damper has, together with supporting the wheel shaft of the large wheel has a journaled blocks to be movable in the vertical direction, the resistance to the force of the unidirectional rotary damper, pull extension By adjusting the force with which the large wheel presses against the inner lower surface of the outer case by the vertical movement of the pivot support block , the damper wheel is A sliding door closer characterized by adjusting the resistance of the unidirectional rotary damper by adjusting the pressure that presses against the inner lower surface, and changing the speed when the sliding door is closed .   The sliding door closer according to claim 1, wherein the traveling body main body is detachably provided with a connecting pin extending outside the outer case through a slit of the outer case and connected to the sliding door.   The sliding door closer according to claim 1 or 2, wherein when the sliding door is in a fully opened state, the outer case is provided with a stopper that meshes with the traveling body and does not retract the traveling body in the closing direction by the elastic body. A sliding door closer.   4. The sliding door closer according to claim 1, wherein when the sliding door is in a closed state, a projecting portion that abuts on a terminal portion of the slit projects from the traveling body main body. .   The sliding door closer according to claim 1, wherein the elastic body is a coil spring.

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