JP5044534B2 - Door retractor - Google Patents

Description

  The present invention relates to a door retracting device that automatically closes a door that is closed to a predetermined opening angle.

  As a conventional door retracting device, for example, the one disclosed in Patent Document 1 is known. In this device, a retracting mechanism is provided on the upper horizontal frame of the door frame, and the retracting mechanism is provided with an arm provided so as to be rotatable about a vertical axis. When the door is closed, the pin provided on the door is introduced and locked into the long groove of the arm that projects obliquely forward on the hand side, and thereafter the arm is rotated backward by the elastic force of the spring. As a result, the door is automatically closed.

However, the door retracting device of Patent Document 1 is such that the arm pivots back and forth, and when the pin comes into contact with the arm driven for some reason, the arm or the pin may be damaged.
JP 2006-283460 A

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a door pull-in device that can prevent damage when a catcher malfunctions due to some cause.

  In order to solve the above-described problems, the door retracting device of the present invention includes a retracting mechanism portion provided on the upper horizontal frame 7 of the door frame 2 and a cover provided on the upper end portion of the door 1 and projecting backward from the door 1. The pull-in mechanism section 10 includes a catch portion 9, which is detachably engaged with the catch target portion 9 when the door 1 is closed to a predetermined opening angle, and is caught according to the door opening / closing operation in the engaged state. A catcher 14 that is movable in conjunction with the portion 9, and a drive portion 16 that drives the catcher 14 engaged with the catched portion 9 to draw the door 1 into a closed state, and the catcher 14 includes a drive portion 16 and a first claw portion 33 and a second claw portion 34 protruding from the pedestal portion 54 so as to face each other at a distance from each other. The first claw portion 33 and the second claw Openings formed between the portions 34 36 is formed in a U-shape so that the catched portion 9 is detachably engaged and held, and the catched portion 9 enters the opening 36 of the catcher 14 when the door 1 is closed. When the claw portion located at the second claw portion 34 is the second claw portion 34, the projection height from the pedestal portion 54 can be changed elastically so that the second claw portion 34 avoids the movement track of the catched portion 9. When the catch portion 9 hits the second claw portion 34 from the outside of the opening 36, the catch portion 9 is retracted so as to be elastically recoverable. Here, the thickness direction of the door 1 is defined as the front-rear direction, and the direction in which the door 1 is operated when the door 1 in the closed state is opened is defined as the front side.

  In the present invention, it is preferable that the second claw portion 34 is movable with respect to the pedestal portion 54 so as to be elastically tiltable so that it can move from the protruding position to the retracted position.

  In addition, it is preferable that the second claw portion 34 is elastically provided so as to be movable in and out so that the second claw portion 34 can move from the protruding position to the retracted position.

  The drive unit 16 includes a moving member 28 that can move in the longitudinal direction of the upper horizontal frame 7 and an elastic member 29 that applies an elastic force in a direction in which the moving member 28 is driven to the hanging side. The pedestal portion 54 is provided on the moving member 28 so as to be rotatable in a range from a standby posture in which the catcher 14 having a substantially inverted U-shape is opened obliquely downward on the hand side to an engagement posture in which the catcher 14 is opened substantially vertically downward. A rail portion 24 that is pivotally supported and travels along the longitudinal direction of the upper horizontal frame 7 in a state where the catcher 14 is in the engaged posture when the opening angle of the door 1 is less than the predetermined opening angle. And a lock portion 25 that detachably engages with the catcher 14 when the opening angle of the door 1 is equal to or greater than the predetermined opening angle, and holds the catcher 14 in a standby position, and the catched portion 9 by closing the door 1 Is in the lock part 25 The guide portion 26 to rotate upon pushing the first pawl portion of the catcher 14 which is held in the standby position in Tsumoto side until engagement position along the catcher 14 on the rail portion 24 is provided is preferable.

  According to the first aspect, when the catcher malfunctions due to some cause, and when the door is closed and the catched portion hits the second claw portion of the catcher from the hand side, the protruding amount of the second claw portion is It can move to the retreat position where it becomes smaller, and it can escape, and it can prevent that a 2nd nail | claw part and a to-be-caught part collide, and are damaged here. Thereafter, when the catched portion passes below the second claw portion and reaches the opening of the catcher, the second claw portion can be returned to the protruding position, and the catched portion can be engaged with the catcher. it can. Therefore, by opening the door thereafter, the catcher can be returned to the normal state at the catched portion, and the door can be automatically closed as usual when the door is next closed.

  According to the second aspect of the present invention, the protruding amount of the second claw portion can be changed by a simple mechanism.

  Further, according to the third aspect, the protruding amount of the second claw portion can be changed by a simple mechanism. Moreover, in this case, since the amount of protrusion can be changed without moving the second claw portion toward the suspension base, the lateral width of the catcher can be reduced.

  According to a fourth aspect of the present invention, the drive unit is movable in the longitudinal direction of the upper horizontal frame, and is expanded and contracted in the longitudinal direction of the upper horizontal frame to drive the moving member toward the suspension side. Since it is comprised with the elastic member which urges | biases elastic force to a direction, the front-back dimension of a drive part can be made small and the front-back width of a drawing-in mechanism part can be made small. In addition, when the door opening angle is less than the predetermined opening angle, the rail portion has an engagement posture in which the substantially inverted U-shaped catcher is opened substantially vertically downward while being securely engaged with the catched portion. It can be moved in the longitudinal direction of the horizontal frame. Further, when the door opening angle is equal to or larger than the predetermined opening angle, the lock portion can be set to a standby posture in which a substantially inverted U-shaped catcher is opened obliquely downward on the hand side, and the catched portion with respect to the catcher Can be reliably engaged and disengaged.

  Further, in this case, it is possible to prevent the catched portion from colliding with the second claw portion of the catcher that has malfunctioned to be in the engaged posture and can be damaged. Further, after the catched portion passes below the second claw portion, the catched portion can be engaged with the catcher by returning to the protruding position where the protruding amount is increased by the elastic force of the elastic body. Therefore, by opening the door after this, it is possible to return the catcher to the position where the catcher is engaged with the lock portion and to the standby position at the catched portion, and the door is automatically closed as usual when the door is closed next time. Is possible.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings. In the following, the longitudinal direction of the upper horizontal frame 7 and the width direction of the door 1 are defined as the left-right direction, the direction orthogonal to the longitudinal direction of the upper horizontal frame 7 in plan view, and the thickness direction of the door 1 are defined as the front-rear direction. Moreover, let the direction which operates the door 1 when opening the door 1 in a closed state be a front side.

  The door retracting device of this example constitutes a door opening / closing drive device together with a door shock absorber described later, and the door 1 when closed to a predetermined opening angle is automatically and slowly closed by the action of the door opening / closing drive device. It is designed to be closed. Among these, the door retracting device has a function of automatically closing the door 1 when closed to a predetermined opening angle, and the door shock absorber has a function of alleviating an impact generated when the door 1 is closed.

  As shown in FIG. 7 and the like, the side end of the door 1 is rotatably connected to one vertical frame 3 of the door frame 2 via a hinge 4. A door stop 5 protrudes from the inner peripheral surface of the rear part of the door frame 2, and the door 1 is entirely housed in the door frame 2 in a closed state in which the rear edge of the door 1 is in contact with the door stop 5.

  As shown in FIG. 1, the door opening / closing drive device includes a catch member 6 provided on the door 1 and a door opening / closing drive unit 8 provided on the upper horizontal frame 7 of the door frame 2.

  The member 6 to be caught is provided at the end of the rear upper end of the door 1 on the suspension base side. The catch member 6 includes a catch portion 9 that protrudes toward the back of the door 1, and the catch portion 9 is formed in a substantially plate shape with a small thickness.

  The door opening / closing drive unit 8 is provided on the hanging side of the upper horizontal frame 7 (the hanging side here means a half of the side of the door rotating shaft in the left-right direction of the upper horizontal frame 7). The retracting mechanism section 10 and the buffer mechanism section 11 shown in FIG. 2 and a casing 12 (see FIG. 2) covering them.

  First, the retracting mechanism unit 10 will be described. As shown in FIGS. 9 and 10, the retracting mechanism 10 includes a retracting mechanism base 13 that is long to the left and right (hereinafter simply referred to as a base 13), a catcher 14 provided on the base 13, a drive unit 16, and The guide member 17 is used. The pull-in mechanism 10 and the above-described caught member 6 constitute a door pull-in device.

  As shown in FIGS. 3 and 5, the base 13 is formed in a substantially groove shape that is long on the left and right and opens downward, and is fitted in a long fitting groove 20 on the left and right formed on the rear lower surface of the upper horizontal frame 7. The rear edge piece 18 protruding rearward from the lower edge of the rear surface portion of the base 13 is attached to the upper horizontal frame 7 along the lower surface of the upper horizontal frame 7. The base 13 is accommodated within the front-rear width of the upper horizontal frame 7 in plan view, and is disposed rearward of the front end of the door stop 5 provided on the upper horizontal frame 7.

  The guide member 17 is housed inside the base 13 and is fixed to the base 13. As shown in FIG. 10, a slide groove 21 is formed in the guide member 17 that is long in the left and right and opens downward and on the hand side (on the opposite side to the suspension side in the left-right direction).

  The opening 22 of the slide groove 21 is formed from the end surface on the hand side of the guide member 17 to the lower surface. A lock portion 25 is constituted by a vertical end surface of the guide member 17 in which the opening 22 is formed, and a rail portion 24 is constituted by a horizontal lower surface of the guide member 17 in which the opening 22 is also formed. Moreover, the rail part 24 and the lock | rock part 25 are smoothly connected by the guide part 26 which consists of a front view arc-shaped surface.

  The drive unit 16 urges an elastic force in a direction to drive the moving member 28 to the suspending side in the left-right direction, and the moving member 28 that is slidable in the left-right direction with respect to the base 13. And an elastic member 29.

  A spring housing groove 30 (see FIG. 11) is formed on the hand side of the moving member 28. A tension spring is accommodated in the spring accommodating groove 30, and an elastic member 29 is constituted by the tension spring.

  The end of the elastic member 29 on the suspending side is locked to the base 13, and the end on the opposite side is locked to the moving member 28. Accordingly, the moving member 28 is always urged toward the suspension side by the elastic member 29. A disposition groove 31 (see FIG. 10) that opens downward is formed at the end of the moving member 28 on the suspending side.

  A catcher 14 that can be detachably engaged with the catched portion 9 is provided at the end of the suspending side of the moving member 28 so that the upper portion of the catcher 14 is accommodated in the arrangement groove 31 and can be rotated to the left and right. . The rotation axis direction of the catcher 14 is parallel to the front-rear direction.

  The catcher 14 moves to the suspension side in the left-right direction by driving the moving member 28 to the suspension side by the elastic member 29 of the drive unit 16.

  The catcher 14 is made of a member that is thin in the front-rear direction and has a substantially inverted U-shape when viewed from the front, and includes a first claw portion 33 that protrudes downward from the suspension side, and a second claw portion 34 that protrudes downward from the hand side. Further, a connecting portion 35 for connecting the protruding base ends of both the claw portions 33 and 34 is provided. An opening 36 is formed between the claw portions 33 and 34 of the catcher 14 so as to open front and rear and downward.

  The connecting portion 35 located at the upper portion of the catcher 14 is formed with a pivoted support portion 37 that protrudes in the front-rear direction. The pivoted support portion 37 is pivotally supported by the suspension-side end portion of the moving member 28. Is rotatable with respect to the moving member 28.

  The catcher 14 is rotatable in a range from a standby posture that opens obliquely downward on the hand side shown in FIG. 11 to an engagement posture that opens substantially vertically downward as shown in FIG. 9. The upper portion of the catcher 14 is brought into contact with the moving member 28 when the standby posture and the engagement posture are reached, and thereby the rotation range of the catcher 14 is limited to the range from the standby posture to the engagement posture. Guided portions 38 are formed so as to project from both the front and rear sides of the hand side portion of the catcher 14.

  The end of the moving member 28 on the suspending side is housed in the slide groove 21 of the guide member 17 so as to be slidable in the left-right direction.

  Both guided portions 38 of the catcher 14 are arranged along the rail portion 24, the lock portion 25, or the guide portion 26 of the guide member 17.

  In the catcher 14, the both guided portions 38 are guided by the guide member 17 as shown in FIG. 13, and accordingly, the catcher 14 has the both guided portions 38 in a standby posture along which the both guided portions 38 are along the lock portion 25. Rotates within a range up to the engagement posture along the rail portion 24.

  In the catcher 14 shown in FIGS. 12A and 13A, the moving member 28 is urged toward the suspension side by the elastic member 29, the both guided portions 38 abut against the lock portion 25, and the standby It is in a locked state in a posture. In this locked state, the first claw portion 33 of the catcher 14 protrudes below the base 13, the guide member 17, and the second claw portion 34.

  Now, when the catcher 14 is in the locked state, the door 1 is rotated in the closing direction by a human hand from the opened state. Then, the catched portion 9 protruding rearward from the door 1 is a suspension base side in the left-right direction in front view as shown in FIGS. 12 (a) to 12 (c) and FIG. 13 (a) to (d). When the door 1 is closed to a predetermined opening angle, it is engaged with the catcher 14.

  Specifically, when the opened door 1 is closed to a predetermined opening angle, first, as shown in FIG. 13A, the catched portion 9 passes under the second claw portion 34 of the catcher 14 in the locked state. Then, as shown in FIG. 13 (b), it comes into contact with the first claw portion 33 of the catcher 14.

  When the catched portion 9 further moves to the suspension base side, the first claw portion 33 of the catcher 14 is pressed to the suspension base side by the catched portion 9, whereby both guided portions 38 of the catcher 14 are moved from the lock portion 25. It moves downward along the guide part 26 and is in a state along the rail part 24. Then, as both guided portions 38 are guided along the guide portion 26 in this manner, the catcher 14 rotates from the standby posture shown in FIG. As shown, the catched portion 9 is engaged with the opening 36. Both the claw portions 33 and 34 of the catcher 14 in this engagement posture protrude below the base 13 and the guide member 17.

  Further, as described above, when both guided portions 38 reach the rail portion 24 from the lock portion 25 via the guide portion 26, the locking of the both guided portions 38 to the lock portion 25 is released, and the moving member 28 is The elastic member 29 is driven to the suspension side by the elastic force.

  At this time, the catcher 14 is engaged as shown in FIGS. 12 (c) and 13 (d) in a state in which both guided portions 38 travel along the rail portion 24 and the engagement posture is maintained. It moves to the suspension side in the left-right direction together with the catched portion 9 that has been caught. At this time, the catched portion 9 gradually moves backward as the door 1 rotates in the closing direction, and the insertion depth of the catcher 14 into the opening 36 is increased.

  And the to-be-caught part 9 moves to the suspension origin side in this way, and the door 1 closed to the predetermined opening angle will rotate automatically, and will be in a closed state.

  Conversely, the closed door 1 is rotated in the opening direction by a human hand. Then, the catched portion 9 moves to the hand side in the left-right direction when viewed from the front, and disengages from the catcher 14 when the door 1 is opened to a predetermined opening angle.

  Specifically, when the closed door 1 is opened to a predetermined opening angle, the second claw portion 34 of the catcher 14 is pressed toward the hand side by the catched portion 9 that moves toward the hand side, and the moving member 28 moves together with the catcher 14. It moves to the hand side against the elastic force of the elastic member 29. At this time, both guided portions 38 of the catcher 14 move toward the hand side along the rail portion 24, whereby the catcher 14 moves toward the hand side while the door 1 maintains the engagement posture. At this time, the catched portion 9 gradually moves forward as the door 1 rotates in the opening direction, and the insertion depth of the catcher 14 into the opening 36 is reduced.

  When the catched portion 9 further moves to the suspension side and the door 1 exceeds a predetermined opening angle, both guided portions 38 of the catcher 14 reach the guide portion 26 from the rail portion 24. In this way, when the both guided portions 38 are disengaged from the rail portion 24, the catcher 14 is rotatable in the range from the engagement posture to the standby posture. For this reason, when the catched portion 9 further moves toward the suspension base, both guided portions 38 move upward along the guide portion 26 and become in a state along the lock portion 25. Then, the guided portions 38 are guided by the guide portions 26 in this way, so that the catcher 14 rotates from the engagement posture to the standby posture, and is in the locked state shown in FIGS. 12 (a) and 13 (a). At this time, the engagement of the catched portion 9 with the opening 36 of the catcher 14 is released. Since the lower end of the second claw portion 34 is positioned above the lower end of the first claw portion 33 of the catcher 14 in this standby posture, when the door 1 is further opened, the catched portion 9 of the catcher 14 is The door 1 can be opened without any trouble by passing the lower side of the two claw portions 34.

  In the door retracting apparatus of this example, the catcher 14 is driven in the longitudinal direction of the upper horizontal frame 7 to close the door 1. For this reason, the front-rear width of the retracting mechanism portion 10 provided in the upper horizontal frame 7 can be reduced, and the retracting mechanism portion 10 can be compactly accommodated within the front-rear width of the upper horizontal frame 7 in plan view.

  Here, the catcher 14 is normally in a standby posture engaged with the lock portion 25 when the door 1 is open. However, the catcher 14 malfunctions due to some cause, and the catcher 14 is opened when the door 1 is opened. As described above, there is a possibility that the engaging posture is taken along the rail portion 24. When the door 1 is closed when the catcher 14 is in the engagement posture in this way, the catched portion 9 hits the second claw portion 34 of the catcher 14 in the engagement posture from the hand side, and the catcher 14 or the catched portion 9 may be damaged.

  Therefore, in order to improve this point, the catcher 14 in this example includes a pedestal portion 54 that is pivotally connected to the moving member 28, and the first claw is provided on the suspending side and the hand side of the pedestal portion 54. It is comprised by providing the part 33 and the 2nd nail | claw part 34. FIG. Further, the second claw portion 34 is provided so as to be movable with respect to the pedestal portion 54 so that the downward protrusion amount thereof is changed. Further, the catcher 14 is provided with an elastic body 55 that urges an elastic force in a direction to increase the downward protrusion amount with respect to the second claw portion 34. Hereinafter, a specific configuration will be described with reference to FIG.

  An end portion of the second claw portion 34 is provided on the hand side portion of the pedestal portion 54 so as to be rotatable around the front-rear axis. As a result, the second claw portion 34 protrudes downward from the protruding position where the tip is directed downward and the amount of protrusion downward is increased as shown in FIG. The range up to the retracted position with the amount reduced can be rotated.

  When the second claw portion 34 reaches the protruding position, the second claw portion 34 comes into contact with the pedestal portion 54, and thereby the rotation range of the second claw portion 34 is restricted from rotating from the protruding position to the hand side. .

  Between the second claw part 34 and the pedestal part 54, a torsion spring is provided as an elastic body 55 that urges an elastic force in a direction to rotate the second claw part 34 from the retracted position to the protruding position. .

  In addition, the second claw portion 34 has a sharp tip, and when the catcher 14 is in the engagement posture, the side surface on the hanging side of the second claw portion 34 is a substantially vertical surface, The side surface on the side is an inclined surface 56 that is inclined downward toward the suspension side.

  Thereby, when the door 1 is closed, the catched portion 9 hits the second claw portion 34 of the catcher 14 in the engagement posture from the hand side, and the inclined surface 56 of the second claw portion 34 is caused by the catched portion 9. The second claw portion 34 is smoothly rotated toward the retracted position when pressed to the hanging side.

  Now, if the catcher 14 malfunctions and the door 1 is opened, the catcher 14 is in an engaging posture along the rail portion 24. At this time, the door 1 is closed and the second claw portion 34 of the catcher 14 is closed. Assume that the catched portion 9 hits from the hand side. In this case, as described above, the second claw portion 34 rotates to the retracted position against the elastic force of the elastic body 55 and the amount of downward projection of the second claw portion 34 is reduced, so that the catched portion 9 moves under the second claw part 34 to reach the opening 36 of the catcher 14 so as to escape. Therefore, it can prevent that the 2nd nail | claw part 34 and the to-be-caught part 9 collide, and a damage arises.

  Further, when the catched portion 9 reaches the opening 36 of the catcher 14 in this way, the second claw portion 34 is rotated back to the protruding position by the elastic force of the elastic body 55, whereby the catched portion 9 is moved to the catcher 14. It will be in the state engaged with the opening part 36 of this. Therefore, when the door 1 is subsequently opened, the catcher 14 can be returned to the standby position by being engaged with the lock portion 25 in the catched portion 9, and the next time the door 1 is closed, it is already normal. The door 1 can be automatically closed by the door retracting device described above.

  In this example, a torsion spring is used as the elastic body 55, but a tension coil spring may be used as the elastic body 55 like the catcher 14 of another example of FIG. Also in this case, the second claw portion 34 rotated from the protruding position toward the retracted position can be returned to the protruding position by the elastic force of the elastic pair 55 as in the previous example.

  Next, the buffer mechanism 11 will be described. 14 and 15 includes a buffer mechanism base 40 that is long to the left and right (hereinafter simply referred to as a base 40), and an operation conversion mechanism and a shock absorber 43 provided on the base 40. Yes. Further, as shown in FIG. 2, a pressing action portion that transmits a pressing force in the door closing direction to the receiving portion 47 of the buffer mechanism portion at the position corresponding to the receiving portion 47 on the back surface of the door 1 when the door rotation is closed. 51 is provided, and the pressing action part 51 and the shock-absorbing mechanism part 11 constitute a door shock-absorbing device.

  As shown in FIG. 8B, the base 40 is formed in a substantially groove shape that opens forward, the base 13 is placed on the upper surface thereof, and the rear edge piece 18 of the base 13 is screwed to the upper surface portion of the base 40. By doing so, it is attached to the base 13. The base 40 is housed within the front-rear width of the upper horizontal frame 7, and is disposed behind the front end of the door stop 5 provided on the upper horizontal frame 7.

  The motion conversion mechanism converts the front-rear motion of the receiving portion 47 into a left-right motion that has a longer stroke than the front-rear stroke of the receiving portion 47, and includes an actuating body 41 and a motion converting portion 42.

  The operating body 41 is accommodated in a base 40 that opens forward so as to be slidable in the left-right direction.

  The motion converting unit 42 moves the actuating body 41 in the left-right direction in accordance with the turning operation when the door 1 is closed, and includes a link mechanism unit 45 provided in the base 40 and having a square shape in plan view, and a link It comprises a receiving portion 47 provided in the mechanism portion 45 and a torsion spring 46 described later.

  The link mechanism unit 45 includes a fixed link 48 and a movable link 49 longer than the fixed link 48. One end of the fixed link 48 is rotatably connected to the base 40, and one end of the movable link 49 is The other end of the fixed side link 48 is rotatably connected. The other end of the movable side link 49 is connected to the operating body 41.

  The receiving portion 47 is rotatably provided at a connecting portion between the fixed side link 48 and the movable side link 49.

  In the link mechanism portion 45, the fixed portion link 48 rotates with respect to the base 40 by the receiving portion 47 operating in the front-rear direction, whereby the fixed side link 48 and the movable side link 49 are moved to the left and right as shown in FIG. It can be deformed in a range from a state of being substantially parallel to the direction and extending linearly to a state of being bent in a square shape in plan view as shown in FIG. Thus, the operating body 41 moves in the left-right direction by changing the link mechanism 45 to the extended state or the bent state.

  A torsion spring 46 for applying an elastic force to rotate the fixed side link 48 of the link mechanism 45 in the extended state between the end portion pivotally supported by the base 40 of the fixed side link 48 and the base 40. Is arranged. As a result, the link mechanism 45 is biased to maintain the bent state shown in FIG.

  The shock absorber 43 is a telescopic type that expands and contracts in the left-right direction and is a one-way type that generates a resistance force only at the time of contraction. The shock absorber 43 is provided in the base 13, and the shock absorber 43 controls the operation body 41 in the left-right direction. Buffer.

  Now, when the link mechanism 45 is in the bent state shown in FIG. 16 and the catcher 14 is in the locked state, the opened door 1 is rotated in the closing direction by a human hand. Then, first, when the door 1 is closed to a predetermined opening angle, the catched portion 9 is engaged with the catcher 14, and the pull-in of the door 1 by the pull-in mechanism portion 10 described above is started.

  After that, when the door 1 is slightly rotated in the closing direction by the retracting mechanism portion 10, the pressing action portion 51 of the door 1 hits the receiving portion 47 provided in the link mechanism portion 45 in the bent state, Thereafter, until the door 1 is completely closed, the pressing action portion 51 presses the receiving portion 47 by the driving force of the retracting mechanism portion 10 to move backward. At this time, the link mechanism 45 is deformed from the bent state to the extended state, and the operating body 41 moves to the hand side against the resistance of the shock absorber 43 accordingly, so that the door 1 is gently moved. Closed.

  FIG. 19 shows another example of the catcher 14. The second claw portion 34 of this example is provided in a housing portion 57 formed on the hand side of the pedestal portion 54 and opening downward, so as to be slidable in the vertical direction. As a result, the second claw portion 34 moves from the protruding position where the downward protruding amount from the pedestal portion 54 is increased as shown in FIG. 19A to the retracted position where the protruding amount is reduced as shown in FIG. 19B. The range is movable.

  The accommodating portion 57 of the pedestal portion 54 is provided with a compression spring that connects the pedestal portion 54 and the second claw portion 34 as an elastic body 55. In addition, the second claw portion 34 of the present example also has a pointed tip, the side surface on the hanging side of the second claw portion 34 is a substantially vertical surface, and the side surface on the hand side is closer to the hanging side toward the lower side. The inclined surface 56 is inclined toward the surface.

  As a result, when the door 1 is closed, the catched portion 9 collides with the second claw portion 34 of the catcher 14 in the engaged posture from the hand side, and the inclined surface 56 of the second claw portion 34 faces the catched portion 9. Thus, the second claw portion 34 moves toward the retracted position when pressed by the suspension side.

  That is, in this example, when the catched portion 9 collides with the second claw portion 34 of the catcher 14 in the engagement posture from the hand side, the second claw portion 34 is elastic as shown in FIG. It moves to the retracted position against the elastic force of the body 55, and the downward protrusion amount of the second claw portion 34 is reduced. When the catched portion 9 passes under the second claw portion 34, the second claw portion 34 moves to the protruding position by its own weight as shown in FIG. Therefore, also in this example, the same effect as the previous example can be obtained.

  In each of the above examples, the door 1 is stored in the door frame 2 when the door 1 is closed. However, the closed door 1 may be configured such that only the rear portion is stored in the door frame 2. It may be located in front of the door frame 2.

  In each of the above examples, the buffer mechanism portion 11 is provided on the upper horizontal frame 7 and the pressing action portion 51 is provided on the upper end portion of the door 1. Conversely, the buffer mechanism portion 11 is provided on the upper end portion of the door 1. And the pressing action portion 51 may be provided on the upper horizontal frame 7. Moreover, you may provide only a door drawing-in apparatus, without providing a door shock absorber.

It is an example of an embodiment of the invention, and is a perspective view seen from the door front side showing a state in which the door is opened. It is the perspective view which looked at the state which opened the door same as the above from the door rear side. It is the perspective view which showed the state just before a to-be-caught part engages with a catcher same as the above, and abbreviate | omitted some illustrations. It is the perspective view which abbreviate | omitted some illustrations which show the state which closed the door same as the above. It is a sectional side view which shows the state just before a to-be-caught part engages with the same catcher same as the above. It is a rear view which shows the state which closed the door same as the above. It is a bottom view which shows the state just before a press action part same as the above hits a receiving part. The door opening / closing drive unit is shown, wherein (a) is an overall perspective view, and (b) is a perspective view in which a retracting mechanism portion and a buffer mechanism portion are separated. It is the perspective view which showed a part of drawing-in mechanism part same as the above in the cross section. It is a disassembled perspective view of the drawing-in mechanism part which abbreviate | omitted illustration of the base same as the above. It is a side view of the drawing-in mechanism part which abbreviate | omitted illustration of the base same as the above. It is explanatory drawing which showed the state which a to-be-caught part engages with a catcher in order when a door same as the above is closed, (a) shows the state immediately before a to-be-caught part engages with a catcher, (b) A state where the catched portion is engaged with the catcher is shown, and (c) shows a state where the door is closed. It is explanatory drawing which showed the state which a to-be-caught part engages with a catcher in order when a door same as the above is closed, (a) shows the state immediately before a to-be-caught part engages with a catcher, (b) A state where the catched portion is in contact with the first claw portion of the catcher is shown, (c) shows a state where the guided portion is guided by the guide portion, and (d) shows a state where the door is closed. It is a perspective view which shows a buffer mechanism part same as the above. It is a disassembled perspective view of a buffer mechanism part same as the above. It is explanatory drawing which shows the positional relationship of an upper frame same as the above and a buffer mechanism part. It is operation | movement explanatory drawing of a 2nd nail | claw part same as the above, (a) shows the state just before a to-be-caught part hits the 2nd nail | claw part of the catcher of an engagement state, (b) is a to-be-caught part of (a). Shows a state where it hits the second nail part. It is operation | movement explanatory drawing of the 2nd nail | claw part of another example, (a) shows the state immediately before a to-be-caught part hits the 2nd nail | claw part of the catcher of an engagement state, (b) is to-be-caught of (a). (C) shows a state in which the catched portion of (b) is engaged with the catcher after passing through the second claw portion. Furthermore, it is operation | movement explanatory drawing of the 2nd nail | claw part of another example, (a) shows the state immediately before a to-be-caught part hits the 2nd nail | claw part of the engaged catcher, (b) is the covered object of (a). The state where the catch part hits the second claw part is shown, and (c) shows the state where the catched part of (b) passes through the second claw part and is engaged with the catcher.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Door frame 7 Upper horizontal frame 9 Caught part 10 Pull-in mechanism part 14 Catcher 16 Drive part 24 Rail part 25 Lock part 26 Guide part 28 Moving member 29 Elastic member 33 1st nail | claw part 34 2nd nail | claw part 36 Opening part 55 Elastic body

Claims (4)

  The door thickness direction is defined as the front-rear direction, the door operating direction is defined as the front side when the door in the closed state is opened, the retracting mechanism provided on the upper horizontal frame of the door frame, and the upper end of the door The retracting mechanism portion is detachably engaged with the catched portion when the door is closed to a predetermined opening angle and is in the engaged state. A catcher that is movable in conjunction with a catched portion according to a door opening / closing operation, and a drive portion that drives the catcher engaged with the catched portion to draw the door into a closed state, and the catcher is driven And a first claw portion and a second claw portion that protrude from the pedestal portion so as to be opposed to each other and formed between the first claw portion and the second claw portion. To be caught in the opened opening It is formed in a U shape so as to be detachably engaged and held, and the claw portion located on the side where the catched portion enters the opening of the catcher when the door is closed is referred to as the second claw portion. When the second claw portion can be elastically changed in the protruding height from the pedestal portion so as to avoid the movement trajectory of the catch portion, the catch portion hits the second claw portion from the outside of the opening portion. A door retracting device characterized in that it is retracted elastically and reversibly.   The said 2nd nail | claw part can be moved from the said protrusion position to a retracted position by rotating with respect to a base part, and being provided elastically inclinable. Door retractor.   The door pull-in device according to claim 1, wherein the second claw portion is provided so as to be elastically movable relative to the pedestal portion so that the second claw portion can move from the protruding position to the retracted position.   The drive unit includes a moving member that is movable in the longitudinal direction of the upper horizontal frame, and an elastic member that applies an elastic force in a direction that drives the moving member to the hanging side, and the pedestal portion is substantially inverted U The character-shaped catcher is pivotally supported by the moving member so as to be rotatable in a range from a standby posture in which the catcher is opened obliquely downward on the hand side to an engagement posture in which it is opened substantially vertically downward, and the door is provided on the upper horizontal frame. When the opening angle of the door is less than the predetermined opening angle, when the catcher is in the engagement posture and the rail portion that travels along the longitudinal direction of the upper horizontal frame, and the door opening angle is equal to or larger than the predetermined opening angle A lock part that detachably engages with the catcher and holds the catcher in the standby position, and a first claw part of the catcher that is closed in the standby position with the door closed and the catched part held in the standby position. When pressed against Door retraction device according to any one of claims 1 to 3, characterized in that a guide portion is rotated to the engaged position along the char to the rail portion is provided.

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