JP5131899B2 - Closed stop device for self-closing sliding doors - Google Patents

Description

  The present invention relates to a closing / stopping device that is applied to a sliding door that can be automatically closed, and that can stop and hold a sliding door in an open state against the closing operation force of the automatic closing device.

  Patent documents 1 and 2 are proposed as prior art of this kind of closing stop device. The closing stop device of Patent Document 1 can close and stop the door panel at an arbitrary open position by pressing the elastic roller against the peripheral surface of the runner roller that holds the door panel and preventing the runner roller from rolling. I have to. The closing / stopping device of Patent Document 2 allows the door panel to be closed and stopped at an arbitrary open position by pressing an elastic roller against the rail surface of the guide rail. In either case, the door panel is closed when the elastic roller is positioned closer to the closed end than the dead center position, with reference to the dead center position where the distance between the runner roller or guide rail and the elastic roller is the smallest. You can stop.

  One of the closing and stopping devices of the present invention is configured by using a lock lever that swings and displaces between a closed lock posture and a standby posture with a dead center position interposed therebetween, and a rack that engages with the lock lever. However, a closing and stopping device using a lock lever as an engaging element is known from Patent Document 3. In this case, a closing and stopping device is configured by a friction roller that presses against the panel surface of the door panel, a lock lever that engages with an uneven engagement portion provided on the upper surface of the friction roller, and a housing that supports them. The friction roller is made of an elastically deformable urethane resin and is rotatably supported around the vertical axis by a housing. The housing is fixed to the lower surface of the guide rail.

  The friction roller rotates in conjunction with the opening and closing movement of the door panel, and in a state where the lock lever is closed from the dead center position and tilted to the lock posture side, the friction roller rotates and the friction roller rotates. It is possible to regulate the movement of the door panel in the closing direction. To release the closed state of the door panel, the door panel is operated in the closing direction to rotate the friction roller in the reverse direction and tilt the lock lever to the standby posture side to release the tension engagement state. At this time, the lock lever moves over the dead center position while elastically deforming the friction roller.

Japanese Patent Publication No. 8-9932 (paragraph number 0024, FIG. 2) JP-A-10-159436 (paragraph number 0009, FIG. 2) JP 2003-138829 A (paragraph number 0021, FIG. 5)

  Each of the closing and stopping devices of Patent Documents 1 and 2 has a structure that switches between a closed locking posture and a standby posture when the elastic roller gets over (or passes through) the dead center position. At this time, the elastic roller needs to get over the object to be braked while slipping in a state in which the upper and lower opposing positions of the circumferential surface are crushed and subjected to rotational resistances in opposite directions, that is, in a state where it is difficult to rotate. It takes a great deal of force to change the position of the roller, and even a healthy person may need to bend and open and close the door panel. Therefore, for example, for a user who can use only the upper body while sitting in a wheelchair, it is extremely difficult to open and close the door panel. Although it is possible to reduce the resistance of the elastic roller to climb over, it becomes difficult to securely close the door panel and hold it in a stopped state.

  Moreover, since the closing stop apparatus of patent document 1 makes the roller which hangs a door panel the object of braking, it cannot apply to the door-slider type sliding door which supports the weight of a door panel with a door wheel, for example. In that respect, since the closing stop device of Patent Document 2 uses the guide rail as a braking target, it can be applied without any problem even if it is a door type sliding door. However, since the guide rail is the subject of braking, when the door panel for general households is relatively small and light in weight, the door panel and the elastic roller may float away from the guide rail. In such a case, the closing stop function by the elastic roller may not be exhibited. In some cases, the state of the elastic roller may be switched regardless of the user's intention.

  Since the closing / stopping device of Patent Document 3 presses the friction roller rotating around the vertical axis against the panel surface of the door panel, even when the door panel floats away from the guide rail, the closing / stopping function can be exhibited without problems. . However, when the door panel swings away from the friction roller centering on the runner roller, the contact pressure between the friction roller and the door panel becomes small, and the door panel cannot be held in a stopped state. There is. For example, when a part of a wheelchair touches the door panel and the door panel swings away from the friction roller, the closing stop force decreases, and the closing operation force of the automatic closing device reduces the door panel closing direction. There is a risk of moving to. Moreover, since it is necessary to arrange | position a friction roller and a housing in any one side before and behind the opening-and-closing locus | trajectory surface of a door panel, a closing stop apparatus may not be applied to the sliding door which opens and closes two door panels.

  The object of the present invention can be applied to both a door-type sliding door and a suspension-type sliding door, and can be applied without problems even to a sliding door that opens and closes two door panels. To provide an apparatus. The object of the present invention is to ensure that the door panel can be stopped and held in the open position by reliably performing the closing and stopping function even when the runner roller floats away from the guide rail or swings back and forth. An object of the present invention is to provide an easy-to-use closing / stopping device in which anyone can easily change the posture of the lock body.

  The closing stop device of the present invention is applied to a self-closing sliding door, and stops and holds the door panel 2 in the middle of opening against the closing operation force of the automatic closing device. The closing stop device includes a rack 33 provided on one of the door panel 2 and the guide rail 3 and a lock unit 34 provided on the other. The lock unit 34 is supported so as to be swingable and displaceable between a closed lock posture and a standby posture, and is supported so as to be able to come into contact with and separate from the rack 33, and the lock body 35 is advanced toward the rack 33. It includes a spring 36 to be energized, a lock body 35, and a housing 37 that houses the spring 36. Therefore, the lock body 35 tilted to the closed lock posture is stretched and engaged with the rack 33 so that the door panel 2 can be stopped and held against the closing operation force of the automatic closing device.

  The lock body 35 includes a lock lever 39 that engages with the rack 33, a holder 40 that closes the lock lever 39 so as to be swingable between a lock posture and a standby posture, and an urging force that returns the lock lever 39 to a neutral position. It is composed of a force body 41. The holder 40 is supported by the housing 37 so as to be able to retract and retract, and is advanced and biased toward the rack 33 by a spring 36. The lock lever 39 can hold and hold the door panel 2 by strikingly engaging with the rack 33 in a state where the lock lever 39 is tilted to the closed lock posture. Further, by closing the door panel 2 in the stopped holding state, the lock lever 39 is switched to the standby position beyond the neutral position by the joint action of the lock lever 39 and the holder 40, and the door panel 2 is automatically closed. Can be closed.

  A rack 33 is fixed to the upper wall of the guide rail 3, and a lock lever 39 that engages with the rack 33 is disposed on an upper portion of a housing 37 that is provided so as to be movable along with the door panel 2.

  In the vicinity of the lock lever 39 when the door panel 2 is in the closed position, the closed end portion 33S of the rack 33 is positioned closer to the open side than the lock lever 39. Thus, every time the door panel 2 is closed to the closing position by the automatic closing device, the lock lever 39 can be automatically returned to the neutral position.

  A lock claw 54 is provided at one end of a lock lever 39 that is pivotally supported by a pin 55 at a midway portion, and a weight 41 as an urging member is provided at the other end. Thus, the entire lock lever 39 is urged to return to the neutral position by the gravity moment of the weight 41.

  A spring 36 is disposed between the holder 40 and a spring seat 44 disposed adjacent to the holder 40. A spring adjustment screw 43 for adjusting and changing the tension of the spring 36 by moving the spring seat 44 is provided.

  The closing stop device of the present invention is configured by a rack 33 provided on one of the door panel 2 and the guide rail 3 and a lock unit 34 provided on the other. A lock body 35 that can be oscillated and displaced between a closed lock posture and a standby posture, and that is supported so as to be able to contact and separate from the rack 33; and a spring 36 that urges the lock body 35 toward the rack 33; The lock unit 34 is constituted by a housing 37 or the like that accommodates both the members 35 and 36, and the lock body 35 tilted to the closed lock posture is engaged with the rack 33 so that the door panel 2 is stopped and held at an arbitrary open position. I was able to do it.

  As described above, in the present invention, the closing device is configured by using the rack 33 and the lock body 35 engaged with the rack 33 as an engagement element, and the tilting posture of the lock body 35 is switched by the opening / closing operation of the door panel 2. Thus, the lock body 35 is engaged with the rack 33 and the door panel 2 is stopped and held at an arbitrary open position, or the engagement with the rack 33 is released and the stop holding state can be released. Compared with a conventional closing / stopping device that closes and stops the door panel by overcoming the dead center position while the roller is elastically deformed, the switching resistance when the posture of the lock body 35 is switched can be reduced. Even if the user is weak, the door panel 2 can be opened and closed lightly while being closed and stopped. In addition, since a closing stop device is provided between the guide rail 3 and the door panel 2, the closing stop device can be applied not only to a suspension type sliding door but also to a door type sliding door. Even a sliding door that opens and closes differently can be applied without problems, and a stop device with excellent versatility as a whole can be obtained.

  A lock body 35 is configured by a lock lever 39, a holder 40 that supports the lock lever 39 in a swingable manner, and a biasing body 41 that biases the lock lever 39 back to the neutral position. According to the lock unit 34 that is supported so as to be able to move in and out, and is advanced and biased toward the rack 33 by a spring 36, the tilting operation of the lock lever 39 when the door panel 2 is opened and closed, and the holder 40 By combining the retracting operation, the lock lever 39 can be closed and the posture can be cyclically switched between the locked posture and the standby posture, and the switching posture can be maintained, so that the posture switching of the lock lever 39 is always stable. Even if the door panel 2 is opened violently, the lock lever 39 can be turned off. Obtained by dividing and thus can be reliably prevented. In a state where the lock lever 39 is tilted to the closed lock posture, the lock lever 39 is stretched and engaged with the rack 33 to stop and hold the door panel 2. Further, when the door panel 2 in the stopped holding state is closed, the lock lever 39 and the holder 40 are operated together to switch the lock lever 39 to the standby position beyond the neutral position, so that the door panel 2 is closed by the automatic closing device. Can be operated.

  When the rack 33 is fixed to the upper wall of the guide rail 3 and the lock lever 39 is disposed on the upper portion of the housing 37 that moves together with the door panel 2, the lock lever 39 engages with the rack 33 up and down to maintain the closed lock posture. Therefore, even when the door panel 2 is opened wildly and the runner roller 9 floats away from the guide rail 3, the engagement state between the lock lever 39 and the rack 33 can be maintained. Even when the door panel 2 swings back and forth, the engagement state between the lock lever 39 and the rack 33 can be maintained and the door panel 2 can be reliably stopped and held in the open position.

  If the closed end 33S of the rack 33 is positioned in the vicinity of the lock lever 39 when the door panel 2 is in the closed position and on the open side of the lock lever 39, the door panel 2 is closed to the closed position by the automatic closing device. Each time it is operated, the lock lever 39 can be automatically returned to the neutral position by the urging body 41. Further, since the door panel 2 can be opened with the movement inertia force in the opening direction applied to the extent that the closed end portion 33S of the rack 33 is away from the closed position, the door panel 2 can be opened from the closed position. The opening resistance can be reduced, and the door panel 2 can be opened more easily. The user does not feel the resistance when the lock lever 39 is closed and switched to the locked posture.

  A lock claw 54 is provided at one end of a lock lever 39 that is pivotally supported, a weight 41 is provided at the other end, and the lock unit 34 that urges the lock lever 39 to return to the neutral position by the gravitational moment of the weight 41 is provided. Therefore, compared with the case where the lock lever 39 is urged to return to the neutral position with a spring material, for example, the structure of the lock unit 34 can be simplified, the number of parts and the number of assembly steps can be reduced, and the closing and stopping device can be reduced accordingly. Cost can be reduced.

  According to the lock unit 34 in which the spring 36 is disposed between the holder 40 and the spring seat 44 and the tension of the spring 36 can be adjusted and changed by moving the spring seat 44 with the adjusting screw 43. Since the switching resistance of the lock lever 39 can be adjusted to be large or small by changing the tension of 36, even when the weight of the door panel 2 is large or small, the closing stop device can be applied in common. Furthermore, the opening / closing operation of the door panel 2 can be optimized by adjusting and changing the switching resistance of the lock lever 39 according to the physical strength and preference of the user.

(Example 1) FIG. 1 thru | or FIG. 7 shows Example 1 of the sliding door of the single sheet | seat structure to which the closing stop apparatus based on this invention is applied. In FIG. 2, reference numeral 1 is a door frame, and 2 is a door panel. A guide rail 3 is fixed to the upper frame portion of the door frame 1. Runner units are attached to the upper left and right corners of the door panel 2, and the door panel 2 suspended by the runner unit can be opened and closed by guiding the runner units with the guide rails 3. The door panel 2 is held by a swinging pin 6 that engages with a slide groove 5 provided at the lower end thereof.

  As shown in FIG. 4, the guide rail 3 is made of an aluminum strip having a C-shaped cross section that opens downward, and is provided with a partial arc-shaped rail groove 3 a before and after the rail opening. The runner unit 4 includes a runner base embedded and fixed in the upper left and right corners of the door panel 2, a runner body 8 that is guided to run by the previous rail groove 3 a, and a suspension shaft that connects the runner base and the runner body 8. It is. The runner body 8 includes a pair of front and rear runner rollers 9 and a travel block 11 that rotatably supports the runner roller 9 via a runner shaft 10.

  An automatic closing device is provided between the guide rail 3 and the door panel 2 in order to automatically and slowly close the door panel 2 that has been opened and close to the closed end. Furthermore, the closing / stopping device according to the present invention is provided to stop and hold the door panel 2 in the middle of opening against the closing operation force of the automatic closing device.

  In FIG. 3, the automatic closing device includes a constant torque spring 15 that pulls and biases the door panel 2 toward the closed end, an air damper (damper) 16 that slowly closes the door panel 2 by reducing the closing speed of the door panel 2, and the like. Consists of. The entire constant torque spring 15 wound in a roll shape is rotatably supported by a bracket 17 fixed to the traveling block 11 on the closed end side, and the starting end of the spring body 15a is close to the closed end of the guide rail 3. It is fastened and fixed to. Therefore, when the door panel 2 is opened, the spring body 15a is drawn out from the constant torque spring 15, and the door panel 2 is always pulled in the closing direction with a constant tension.

  The air damper 16 includes a cylinder 20, a piston 21, and a piston rod 22. When the piston rod 22 retracts into the cylinder 20, an air outlet passage pushed out by the piston 21 is throttled by a throttle valve (not shown). Then, the closing operation of the door panel 1 is braked. An end plug 23 is fixed to one end of the cylinder 20, and the previous throttle valve is incorporated therein. The throttle valve can be changed by adjusting the screwing amount of the throttle adjusting valve.

  In order to prevent the posture of the air damper 16 from changing around the axis within the guide rail 3, holding blocks 24 and 25 are fixed to the advancing end of the piston rod 22 and the rod side end of the cylinder 20, respectively. The blocks 24 and 25 are supported by a pair of freely rotatable rollers 26. Each roller 26 is guided to travel in the rail groove 3a in the same manner as the previous runner roller 9. The base end of the cylinder 20 is connected to the traveling block 11 on the open end side via an end plug 23, a connecting frame 27, and a closing stop device described later. Therefore, when opening and closing the door panel 2, the cylinder 20 can be opened and closed along with the door panel 2.

  In order to pull out the piston rod 22 retracted into the cylinder 20 using the opening operation of the door panel 2, the iron piece 31 is fixed to the upper corner portion of the holding block 24, and the magnet 30 that adsorbs the iron piece 31 is guided. The rail 3 is fixed near the closed end. When the door panel 1 in the closed position is opened, the piston rod 22 is pulled out from the cylinder 20 in accordance with the opening movement amount. At this time, external air is sucked into the cylinder 20, but the external air is sucked through a check valve provided in the end plug 23, so that the piston rod 22 can be pulled out easily. When the piston rod 22 is pulled out to the limit position, the iron piece 31 is separated from the magnet 30, and the cylinder 20 and the piston rod 22 move along with the door panel 1 in that state. When the door panel 2 is closed and moved, the air damper 16 is actuated after the iron piece 31 is attracted to the magnet 30 to reduce the closing speed of the door panel 2.

  In the self-closing sliding door configured as described above, a closing and stopping device is provided between the door panel 2 and the guide rail 3 in order to stop and hold the opened door panel 3 against the closing operation force of the automatic closing device. Is provided. The closing / stopping device includes a rack 33 fastened and fixed to the upper wall of the guide rail 3 with screws, and a lock unit 34 connected and fixed to the traveling block 11 on the open end side of the door panel 2. A group of rack teeth 33a are formed at regular intervals on the lower surface side of the plastic molded rack 33. The rack 33 is arranged from the vicinity of the open end of the guide rail 3 to the vicinity of the lock lever 39 when the door panel 2 is in the closed position, details of which will be described later.

  In FIG. 5, the lock unit 34 includes a lock body 35, a spring 36 that advances and urges the lock body 35 toward the rack 33, a housing 37 that accommodates these members, and the like. The lock body 35 includes a lock lever 39 that engages with the rack 33, a holder 40 that closes the lock lever 39 so as to be swingable between a lock posture and a standby posture, and a weight that urges the lock lever 39 to return to the neutral position. (Biasing body) 41 and the like. The holder 40 is supported by a housing 37 so as to be close to or away from the rack 33, that is, slidable up and down, and is urged by a spring 36. In order to adjust and change the tension of the spring 36, a spring adjusting screw 43 and a spring seat 44 are provided.

  The housing 37 is formed in a square block shape by joining a pair of front and rear case bodies 37 a and fastening both case bodies 37 a with screws 57. A guide groove 45 for receiving the holder 40 and the spring 36 is formed in the joint surface of both case bodies 37a, and a lever groove 46 that allows the lock lever 39 to swing left and right and a spring adjusting screw 43 are provided above and below. The insertion groove 47 is recessed, and the connecting grooves 48 and 48 are recessed adjacent to the left and right of the guide groove 45. The housing 37 is connected and fixed to the connecting frame 27 and the traveling block 11 on the open end side via a connecting shaft 49 engaged with the connecting groove 48 (see FIGS. 1 and 3).

  The holder 40 is made of an inverted portal plastic molded product having a pair of front and rear brackets 51, and stoppers 52 that define the advance limit of the holder 40 are bulged and formed at the front and rear ends of both brackets 51. A spring receiving projection for receiving the upper end of the spring 36 is formed on the lower surface of the holder 40.

  The lock lever 39 is made of a plastic molded product having a lock claw 54 at one end and a weight 41 at the other end, and a middle portion of the lock lever 39 is pivotally supported by a previous bracket 51 via a pin 55 so as to be swingable left and right. 1, the lock claw 54 engages with the rack 33 at a position of about 10 o'clock on the dial of the timepiece, and the lock claw 54 as shown in FIG. The dial can be oscillated and displaced to a standby position that engages with the rack 33 at approximately 2 o'clock. The weight on the weight 41 side when the pivot center of the lock lever 39 is a fulcrum is sufficiently larger than the weight on the lock claw 54 side. Therefore, the lock lever 39 in the tilted state of the closed lock posture and the standby posture is always urged to return to the neutral position in response to the gravity moment of the weight 41.

  The holder 40 with the lock lever 39 assembled, the spring 36, and the spring receiving seat 44 are accommodated in the guide groove 45, the spring adjusting screw 43 is screwed into the spring receiving seat 44, and the connecting shaft 49 is engaged with the connecting groove 48. Then, both the case bodies 37a are fastened with a pair of left and right screws 57, and the spring adjusting screw 43 is rotatably engaged with the retainer plate 58 inserted into and engaged with the case body 37a, whereby each component is integrated with the housing 37. As a result, the lock unit 34 can be obtained as a unit component.

  As shown in FIG. 3, when the door panel 2 is in the closed position, the position of the closed end 33S of the rack 33 is set near the lock lever 39 in order to swing the lock lever 39 back to the neutral position. 39 on the open side. The lock lever 39 in the neutral position is such that the tip of the lock claw 54 that stands vertically faces the upper wall of the guide rail 3 with a slight gap therebetween. At this time, the holder 40 is pushed up to the advance limit position under the urging force of the spring 36, and the stopper 52 is received by the upper end wall of the guide groove 45 (see FIG. 4).

  When the door panel 2 is operated to open against the urging force of the constant torque spring 15 from the above state, the lock claw 54 is connected to the end portion 35S on the closed end side of the rack 33 as indicated by an imaginary line in FIG. Therefore, the entire lock lever 39 is closed against the return moment of the weight 41 and switched to the locked position, and the tip of the lock claw 54 is received by the gear teeth of the rack 33. When the door panel 2 is further opened, the lock claws 54 are successively brought into contact with the gear teeth of the rack 33 and moved together with the door panel 2 while maintaining the closed lock posture.

  When passing through the tooth groove of the rack 33, the lock claw 54 receives the return moment of the weight 41 and tries to return to the standby position in the tooth groove, but immediately contacts the gear tooth, The posture is not changed to the neutral posture as well as the standby posture, and the lock claw 54 moves in the opening direction while hitting the gear teeth with the patter. At this time, the hitting sound of the gear teeth by the lock pawl 54 is very small because the return moment of the weight 41 is small, and does not exceed the rolling noise of the runner roller 9 and the roller 26.

  As described above, in a state where the lock lever 39 is in the closed lock posture, the door panel 2 is pulled toward the closed end by the spring force of the constant torque spring 15 by releasing the hand at an arbitrary open position. When the door panel 2 starts to close and move, the lock claw 54 receives the return moment of the weight 41 and is received by the gear teeth while falling into the tooth groove of the rack 33. As a result, as shown in FIG. 6B, the lock lever 39 is engaged with the gear teeth of the rack 33 to restrict the movement of the door panel 2 in the closing direction, and the pulling force of the constant torque spring 15 is controlled. Stop and hold in that position. In this locked state, the door panel 2 can continue to move in the opening direction, but movement in the closing direction is restricted. Therefore, it is not necessary to open and hold the door panel 2, and the door panel 1 can pass through the opening surface.

  To close and move the door panel 2 in the stopped holding state, a force in the closing direction is applied to the door panel 2. At the same time that the closing force acts on the door panel 2, a closing force also acts on the housing 37. Therefore, the holder 40 moves downward in a direction away from the rack 33 against the urging force of the spring 36. As a result, the rocking fulcrum position of the lock lever 39 is lowered, so that the lock lever 39 is switched to the neutral position as shown by the solid line in FIG. 7A, and beyond the neutral position, the standby position shown in FIG. 7B. Switch to. Since the lock claw 54 in this state only accompanies the closing operation of the door panel 2 and hits the gear teeth, the door panel 2 can be closed and moved without resistance. At the final stage of the closing stroke, the air damper 16 operates to reduce the closing speed of the door panel 2, so that the door panel 2 can be closed and stopped slowly.

  Immediately before the door panel 2 returns to the closed position, the contact state between the lock claw 54 and the rack 33 is canceled. Therefore, every time the door panel 2 is closed, the lock lever 39 receives the return moment of the weight 41 and returns to the neutral position. As described above, the position of the closed end portion 33S of the rack 33 may be set so that the lock claw 54 contacts the closed end portion 33S when the door panel 2 is opened to some extent from the closed position. Further, when the position of the closed end portion 33S is separated from the closed position, the door panel 2 is opened against the spring force of the constant torque spring 15, so that the inertial force in the opening direction is applied to the door panel 2. Since the lock lever 39 can be closed and switched to the locked posture in the state, the opening resistance of the door panel 2 in the initial opening can be reduced. The tension of the spring 36 can be optimized by adjusting the screwing amount of the spring adjusting screw 43. For example, when the door panel 2 is suspended, it is adjusted according to its weight.

  As described above, according to the closing and stopping device configured by the rack 33 fixed to the guide rail 3 and the lock unit 34 that moves along with the door panel 2, the sliding door structure is a suspension car type, In any case, the closing and stopping device can be applied without problems. In addition, since the rack 33 and the lock unit 34 can be arranged using the internal space of the guide rail 3, even if the sliding door opens and closes the two door panels 2, the closing stop device can be applied without any problem. Can improve versatility.

  Even when the door panel 2 is opened wildly and the runner roller 9 is lifted away from the guide rail 3, the lock claw 54 continues to maintain the closed and locked position only by increasing the tilt angle. Therefore, the door panel 2 can be closed and restricted without any trouble at any open position. Similarly, even when the door panel 2 receives an external force and swings forward or backward, the lock lever 39 can be kept in the closed and locked position, and the closed / stop function can be surely exhibited. Furthermore, when the door panel 2 is closed, the holder 40 is moved downward so that the lock lever 39 can be closed and switched from the locked position to the standby position. In comparison, anyone can easily change the position of the lock lever 39.

  In the above embodiment, the holder 40 moves downward against the urging force of the spring 36 so that the position of the lock lever 39 is switched. However, this is not necessary, and the lock lever 39 is moved toward the rack 33 by the spring 36. By directly urging and moving the lock lever 39 against the spring 36, the posture can be switched. In that case, the holder 40 can be omitted. As the biasing body 40 that biases the lock lever 39 back to the neutral position, a spring material such as a wire spring or a leaf spring can be applied. The rack 33 can be disposed on the inner surface of one of the front and rear walls of the guide rail 3. If necessary, the rack 33 can be provided so as to be able to move together with the door panel 2, and the lock unit 34 can be provided on the guide rail 3 side.

1 is a longitudinal sectional view of an intermediate stop device according to Embodiment 1. FIG. It is a front view of a sliding door. It is a front view which shows the relationship between a self-closing structure and a midway stop apparatus. It is a vertical side view of a halfway stop device. It is a disassembled perspective view of a midway stop device. It is sectional drawing which shows switching operation | movement of a lock lever. It is sectional drawing which shows switching operation | movement of a lock lever .

Explanation of symbols

2 Door panel 3 Guide rail 33 Rack 34 Lock unit 35 Lock body 36 Spring 37 Housing 39 Lock lever 40 Holder 41 Energizing body

Claims (5)

A closing and stopping device that is applied to a self-closing sliding door and stops and holds the door panel (2) in the middle of opening against the closing operation force of the automatic closing device,
The closing stop device is composed of a rack (33) provided on one of the door panel (2) and the guide rail (3), and a lock unit (34) provided on the other.
The lock unit (34) is supported so as to be swingable and displaceable between a closed lock posture and a standby posture, and is supported so as to be able to come into contact with and separate from the rack (33), and a lock body (35) Including a spring (36) for advancing and urging the rack (33) toward the rack (33), and a housing (37) for accommodating the lock body (35) and the spring (36),
The lock body (35) tilted to the closed lock posture can be stretched and engaged with the rack (33) to stop and hold the door panel (2) against the closing operation force of the automatic closing device ,
A lock body (35) engages with a rack (33), a lock lever (39), a holder (40) that closes the lock lever (39) and swings between a lock posture and a standby posture, and a lock lever An urging body (41) for urging (39) to return to the neutral position,
The holder (40) is supported by the housing (37) so as to be movable in and out of the rack (33), and is urged toward the rack (33) by a spring (36).
The lock lever (39) is able to stop and hold the door panel (2) by strikingly engaging with the rack (33) in a state of being tilted to the closed lock posture,
By closing the door panel (2) in the stopped holding state, the lock lever (39) is switched to the standby position beyond the neutral position by the joint action of the lock lever (39) and the holder (40). (2) closing stop device for self-closing sliding door to be operated can characterized Rukoto close automatically closing device. A rack (33) is fixed to the upper wall of the guide rail (3), and a lock lever (39) that engages with the rack (33) is provided on an upper part of a housing (37) that can be moved along with the door panel (2). arranged to close stop device of the self-closing sliding door tare Ru claim 1. In the vicinity of the lock lever (39) when the door panel (2) is in the closed position, the closed end (33S) of the rack (33) is positioned closer to the open side than the lock lever (39),
Each time the door panel (2) is operated close to the closed position by the automatic closure device, the locking lever (39) closing stop device for self-closing sliding door automatic return can Ru claim 1 or 2, wherein the to the neutral position. A lock claw (54) is provided at one end of a lock lever (39) pivotally supported by a pin (55) in the middle, and a weight (41) as an urging member is provided at the other end. And
Whole of the locking lever (39) is, wait (41) closing stop device for self-closing sliding door gravitational moment Ru return biasing Tare claim 1, 2 or 3 wherein the neutral position. A spring (36) is disposed between the holder (40) and a spring seat (44) disposed adjacent to the holder (40);
The self-closing sliding door closing / stopping device according to any one of claims 1 to 4 , further comprising a spring adjusting screw (43) for adjusting and changing the tension of the spring (36) by moving the spring seat (44) .

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