JP5314392B2 - 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, in the door retracting device of Patent Document 1, since the arm pivots back and forth, it is difficult to fit the retracting mechanism portion compactly within the longitudinal width of the upper horizontal frame. For this reason, when the door is in the open state, the arm may protrude forward from the upper horizontal frame to deteriorate the appearance, or the retracting mechanism portion may not be provided in the upper horizontal frame having a small front-rear width.
JP 2006-283460 A

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a door retracting device in which the retracting mechanism portion can be compactly accommodated within the front-rear width of the upper horizontal frame.

In order to solve the above-described problem, the door retracting device of the present invention is provided at the upper horizontal portion 7 of the door frame 2 and at the upper end portion of the door 1 and protrudes backward from the door 1. It provided to be catching portion 9, the retraction mechanism 10, the catcher 14 to releasably engage said to be catch portion 9 when closed to the predetermined opening angle of the door 1 is freely longitudinally sliding of the upper lateral frame 7 And a drive unit 16 that closes the door 1 by driving the catcher 14 engaged with the catched portion 9 to the suspending side in the longitudinal direction of the upper horizontal frame 7. 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, the drive unit 16 includes the moving member 28 provided with the catcher 14 and movable in the longitudinal direction of the upper horizontal frame 7, and expands and contracts in the longitudinal direction of the upper horizontal frame 7. The elastic member 29 is preferably composed of an elastic member 29 that urges an elastic force in a direction to be driven toward the hanging side.

  The catcher 14 has a substantially inverted U shape when viewed from the front and has a first claw portion 33 that protrudes downward at a position on the suspension side and a second claw portion 34 that protrudes downward at a position on the hand side. It is preferable that the catched portion 9 can be detachably engaged with the opening 36 formed between the first claw portion 33 and the second claw portion 34.

  Further, the substantially inverted U-shaped catcher 14 is provided on the moving member 28 so as to be rotatable in a range from a standby posture in which the catcher 14 opens obliquely downward on the hand side to an engagement posture in which the catcher 14 opens substantially vertically downward. A rail 24 that travels along the longitudinal direction of the upper horizontal frame 7 in a state where the catcher 14 is in an engaged posture when the opening angle of the door 1 is less than the predetermined opening angle, When the opening angle is equal to or larger than the predetermined opening angle, the lock portion 25 that removably engages with the catcher 14 to hold the catcher 14 in a standby posture, and the door 1 is closed and the catched portion 9 becomes the lock portion 25. When the first claw portion 33 of the catcher 14 held in the standby posture is pressed to the suspension base side, a guide portion 26 that rotates the catcher 14 to the engagement posture along the rail portion 24 may be provided. Masui.

  Moreover, it is preferable that the catched portion 9 is provided so as to be movable up and down with respect to the door 1, and a holding portion 55 that holds the catched portion 9 at an arbitrary position in the vertical direction is provided on the door 1.

  The catched portion 9 is extendable in the protruding direction, and is provided with an elastic body 71 for extension that gives the catched portion 9 an elastic force so as to extend with respect to the catched portion 9. 7 is preferably provided with an abutting portion 76 that abuts against the protruding end portion of the catched portion 9 when the door 1 is in the closed state and contracts the catched portion 9.

According to the first to fifth aspects, the catcher engaged with the catched portion can be driven in the longitudinal direction of the upper horizontal frame to automatically close the door. By reducing the width, the retracting mechanism can be compactly accommodated within the front-rear width of the upper horizontal frame in plan view.

According to the first aspect of the present invention, it is possible to use a low-cost elastic member as the drive unit as the drive source, and it is possible to make the drive unit a simple mechanism including a moving member and an elastic member. In addition, the driving unit urges an elastic force in a direction in which the movable member is movable in the longitudinal direction of the upper horizontal frame and the movable member expands and contracts in the longitudinal direction of the upper horizontal frame and is driven toward the suspension side with respect to the movable member. Since it is comprised with an elastic member, 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. Moreover, since the expansion / contraction direction of the elastic member is the same direction as the movement direction of the catcher, the elastic force of the elastic member can be effectively used as the retracting force of the door, and the door can be reliably closed.

According to the second aspect of the present invention, when the door is automatically closed by the retracting mechanism, the catched portion is engaged with the opening portion of the catcher having a substantially inverted U shape when viewed from the front. It is possible to drive the suspension base side while increasing the depth of insertion of the catched portion into the opening. Therefore, the front-rear dimension of the catcher can be shortened while ensuring the amount of engagement between the catcher and the catched portion, and the front-rear width of the retracting mechanism portion can be further reduced.

According to the third aspect of the present invention, when the opening angle of the door is less than the predetermined opening angle by the rail portion, it is ensured that the catched portion has an engagement posture in which the substantially inverted U-shaped catcher is opened substantially vertically downward. Can be moved in the longitudinal direction of the upper 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.

According to the fourth aspect of the present invention, the position of the catched portion in the vertical direction can be adjusted, and the catched portion can be reliably engaged with the catcher.

Further, in the fifth aspect , when the door is closed, the caught portion comes into contact with the abutting portion and contracts, and the caught portion can be compactly accommodated within the front and rear width of the upper horizontal frame. it can. In addition, when the door mounting position with respect to the door frame is shifted rearward, this shift can be absorbed by the amount of contraction of the catched portion when the door is closed, and the catched portion is reliably engaged with the catcher. Can be combined.

  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 cushioning device has a function of absorbing 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 retracting mechanism portion 10 and the above-described caught member 6 constitute a door retracting 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. 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 portion 37 that protrudes in the front-rear direction. 14 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 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, and the pivoted support portion 37 of the catcher 14 provided in the same portion It is free to move in the 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 door 1 to move the further hand side the catch portion 9 has exceeded a predetermined opening angle, both the guided portion 38 of the catcher 14 extending from the rail unit 24 to the guide portion 26. 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 to the hand side, 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.

  As described above, in the door retracting apparatus of this example, the catcher 14 drives 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.

  The drive unit 16 that drives the catcher 14 includes a moving member 28 that is movable in the longitudinal direction of the upper horizontal frame 7, and an extension side that extends and contracts in the longitudinal direction of the upper horizontal frame 7. And an elastic member 29 that urges an elastic force in the driving direction. For this reason, the drive part 16 can also be made into the thing with a small front-back dimension, and the front-back width of the drawing-in mechanism part 10 can also be made small also in this point.

  Further, since the elastic member 29 serving as the drive source of the catcher 14 is expanded and contracted in the same direction as the movement direction of the catcher 14, the elastic force of the elastic member 29 can be effectively used as the pulling force of the door 1. The door 1 can be reliably pulled in by the mechanism unit 10.

  Further, when the opening angle of the door 1 is less than the predetermined opening angle, the rail portion 24 reliably engages the catched portion 9 with the substantially inverted U-shaped catcher 14 being opened substantially vertically downward. In this state, the upper horizontal frame 7 can be moved in the longitudinal direction.

  Further, when the opening angle of the door 1 is equal to or larger than the predetermined opening angle, the lock portion 25 can be set to a standby posture in which the substantially inverted U-shaped catcher 14 is opened obliquely downward on the hand side. Engagement and disengagement of the catched portion 9 with respect to can be reliably performed.

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, at the position corresponding to the receiving portion 47 on the back surface of the door 1, a pressing action that transmits a pressing force in the door closing direction to the receiving portion 47 of the buffer mechanism portion 11 when the door is closed. A portion 51 is provided, and the pressure acting portion 51 and the buffer mechanism 11 constitute a door shock absorber.

  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.

A storage portion 44 is formed at the end of the base 40 on the hand side. The upper portion of the storage portion 44 protrudes upward from the upper surface portion on which the base 13 is placed, and this portion is located on the side of the hand 13 side of the base 13.

  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 actuating body 41 is housed in a housing portion 44 formed at the end on the hand side of the base 40 that opens forward so as to be slidable in the left-right direction.

  The operation conversion unit 42 operates the actuating body 41 in the left-right direction according to the turning operation when the door 1 is closed.

  The motion converting unit 42 includes a link mechanism unit 45 that is provided in the base 40 in a plan view, a bending elastic body 46, and a receiving unit 47 that is provided in the link mechanism unit 45.

The link mechanism unit 45 includes a fixed side link 48 located on the hanging side and a movable side link 49 located on the hand side and longer than the fixed side link 48. One end of the fixed side link 48 is housed in the hanging side portion of the base 40 and is connected to be rotatable about the vertical axis. One end of the movable side link 49 is connected to the other end of the fixed side link 48 so as to be rotatable about the vertical axis. The other end of the movable side link 49 is connected to the operating body 41.

  The receiving portion 47 is made of rubber and formed in a cylindrical shape, and is provided at a connecting portion between the fixed side link 48 and the movable side link 49 so as to be rotatable around the vertical axis. A part of the receiving portion 47 in the circumferential direction always protrudes forward from the connecting portion of 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 in a straight line to a state in which the fixed side link 48 is bent in a square shape in plan view toward the diagonally forward side on the hand side as shown in FIG. It has become. In the state shown in FIG. 14, the link mechanism 45 is housed in the base 40, and in the state shown in FIG. 16, the connecting portion between the fixed side link 48 and the movable side link 49 projects forward from the base 40 and the door stop 5. 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. Further, the shock absorbing mechanism portion 11 of this example is configured so that the front and rear stroke of the receiving portion 47 is accommodated within the front and rear width of the upper horizontal frame 7, and even when the link mechanism portion 45 protrudes forward to the maximum. It fits in the front-rear width of the upper horizontal frame 7 as viewed.

  Between the end part pivotally supported by the base 40 of the fixed side link 48 and the base 40, the fixed side link 48 of the link mechanism part 45 in the extended state is rotated forward as an elastic body 46 for bending. A torsion spring that provides an elastic force is disposed. As a result, the link mechanism 45 is urged by the bending elastic body 46 so as to maintain the bent state shown in FIG.

The shock absorber 43 is telescopic, and cushions the operation of the operating body 41 in the left-right direction by expanding and contracting in the left-right direction. In the present embodiment, the shock absorber 43 is a one-way type that generates a resistance force only when contracted, and is provided in the storage portion 44. By adopting the one-way type, there is an advantage that a feeling of resistance is not felt in the door opening operation. The shock absorber 43 is connected to the base 40 on the hand side and to the operating body 41 on the suspension side, thereby buffering the operation of the operating body 41 in the left-right direction. As the resistor that causes the shock absorber 43 to attenuate, various conventionally known resistors such as oil, air, and spring are used.

  The link mechanism unit 45 shown in FIG. 16 is in a bent state, and the receiving unit 47 is in the most forward position.

  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. At this time, as shown in FIG. 7, the pressing portion 51 of the door 1 has not yet hit the receiving portion 47.

  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.

  Here, the catched portion 9 is provided so as to be movable up and down with respect to the door 1, and a holding portion 55 is provided on the door 1 to hold the catched portion 9 at an arbitrary position in the vertical direction.

  FIG. 17 is an exploded perspective view of the member 6 to be caught. The member 6 to be caught includes a moving body 56 made of a metal having an L-shaped side cross-section protruding from the upper end of the vertical piece 57 toward the rear side, and a cover attached to cover the protruding piece 58. A portion 70 and a case 59 that accommodates a vertical piece 57 of the moving body 56 so as to be movable up and down and are attached to the back surface of the door 1.

  The catched portion 9 includes a projecting piece 58 of the moving body 56 and a cover portion 70 that covers the projecting piece 58.

  The case 59 includes a front case 60 located on the door 1 side and a rear case 61 located on the opposite side.

  A housing recess 62 is formed on the front surface of the rear case 61. The storage recess 62 and the front case 60 facing the storage recess 62 constitute a storage section for storing the vertical piece 57 of the moving body 56 so as to be movable up and down.

  A circular protrusion 63 is formed on the bottom surface of the storage recess 62, and a long hole 65 that is long in the vertical direction is formed in the vertical piece 57 of the moving body 56. The protrusion 63 is inserted into the elongated hole 65 so as to be slidable in the vertical direction, and thereby the vertical movement range of the moving body 56 is limited.

  An elastically deformable claw portion 66 projecting rearward on the moving body 56 side is provided at a position facing the moving body 56 of the front case 60. The claw portion 66 constitutes the holding portion 55 described above, and is elastically brought into contact with the vertical piece 57 of the moving body 56 moved to an arbitrary position in the vertical direction, and the vertical piece 57 is pressed against the rear case 61 so that the moving body 56 is pressed. Hold.

  Therefore, it is possible to adjust the position of the catched portion 9 in the vertical direction, so that the catched portion 9 can be reliably engaged with the catcher 14.

  The vertical position of the catched portion 9 can be automatically adjusted by closing the door 1 after the retracting mechanism portion 10 and the catched member 6 are installed.

  Specifically, as shown in FIG. 1, in the casing 12 of the door opening / closing drive unit 8 that covers the front side of the door opening / closing drive unit 8, the catched portion 9 is placed in the casing 12 when the door 1 is closed. An insertion port 67 is formed for insertion and engagement with the catcher 14.

  As shown in FIGS. 5 and 18, the lower edge surface 68 and the upper edge surface 69 of the insertion port 67 are inclined surfaces so that the vertical width of the insertion port 67 becomes smaller toward the rear.

  When the door 1 is closed when the vertical position of the catched portion 9 is displaced with respect to the catcher 14, the rear end of the catched portion 9 is the lower edge surface 68 of the insertion port 67 as shown in FIG. Or the upper edge surface 69 hits either the inclined surface of the lower edge surface 68 or the inclined surface of the upper edge surface 69, and the catched portion 9 moves to a normal position in the vertical direction where the catched portion 9 is reliably engaged with the catcher 14. The movable body 56 provided with the catched portion 9 is held by the holding portion 55 at the position. Thereby, the work of adjusting the position of the catched portion 9 in the vertical direction can be omitted.

  Next, another example different from the above example will be described. In the following description, the same components as those in the example are given the same numbers, and redundant descriptions are omitted.

  The catched portion 9 of the present example can be expanded and contracted in the thickness direction of the door 1, and an elastic body 71 for extension that imparts an elastic force to the catched portion 9 so as to extend with respect to the catched portion 9. It is provided. Hereinafter, this example will be described in detail with reference to FIGS.

  As shown in FIG. 19, a protruding piece 58 of the moving body 56 is accommodated in the cover portion 70 of the member 6 to be caught, and the cover portion 70 is slidable in the thickness direction of the door 1.

As shown in FIG. 21, a long hole 72 is formed in the lower surface portion of the cover portion 70 in the sliding direction of the projecting piece 58. A protruding portion 74 made of a retaining screw is screwed onto the protruding piece 58 so as to protrude vertically from the protruding piece 58. The lower end of the protrusion 74 is inserted into the hole 72 of the cover 70 so as to be slidable in the sliding direction of the protrusion 58. From this the extended state in which the cover portion 70 as the guided portion 38 is shown in FIG. 19 (b) is moved to the tip side of the projecting piece 58, the projecting piece 58 of the cover portion 70 as shown in FIG. 19 (a) It can be expanded and contracted in the range up to the contracted state moved to the base end side.

  In the cover part 70, the elastic body 71 for expansion | extension which consists of compression springs is accommodated. The end of the extension elastic body 71 on the door 1 side is in elastic contact with the upper end portion of the protrusion 74, and the opposite end is in elastic contact with the elastic contact portion 75 formed in the cover portion 70. Thereby, the elastic force of the elastic body 71 for expansion | extension is always provided to the direction in which the cover part 70 moves to the front, and the to-be-caught part 9 maintains an expansion | extension state in a natural state.

  A portion of the casing 12 of the door opening / closing drive unit 8 that covers the back side of the door opening / closing drive unit 8 constitutes a contact portion 76. When the opening angle of the door 1 is substantially equal to or less than the predetermined opening angle, the protruding end portion of the catched portion 9 constituted by the cover portion 70 comes into contact with the front surface of the contact portion 76, and the elastic force of the elastic body 71 for extension. It will be in a contracted state against this.

With such a configuration, when the door 1 is closed, as shown in FIG. 21B , the catched portion 9 comes into contact with the abutting portion 76 and contracts, and the catched portion 9 is The upper horizontal frame 7 can be compactly accommodated within the front-rear width.

  Further, when the mounting position of the door 1 with respect to the door frame 2 is shifted rearward, this shift can be absorbed by the contraction amount of the catched portion 9 when the door 1 is closed. The catcher 14 can be reliably engaged.

  Further, as shown in FIG. 21, the planar shape of the catched portion 9 of this example is different from that of the catched portion 9 of the example.

  Specifically, the rear portion of the side of the catching portion 9 on the suspending side is a surface that comes into contact with the first claw portion 33 of the catcher 14 in the standby state, and this surface is in the thickness direction of the door 1 in plan view. The inclined surface 79 is inclined so as to be inclined so as to be located closer to the suspender side toward the rear.

  In this way, when the door 1 in the open state is closed, the inclined surface 79 of the catched portion 9 is substantially connected to the first claw portion 33 of the catcher 14 in the standby state as shown in FIG. The catcher 14 can be reliably rotated to the engagement posture by efficiently contacting the catcher 14 with the turning force in the closing direction of the door 1.

  Further, the side surface on the hand side of the catched portion 9 is a surface with which the second claw portion 34 of the catcher 14 in the engaged posture abuts when the door 1 is closed, and also when the door 1 is opened. Although it is a surface which contacts the 2nd nail | claw part 34 of the catcher 14 of a posture, this surface becomes the arc-shaped surface 80 used as the curved surface which is located in the suspension base side in planar view.

  In this way, when the door 1 is closed or opened, the arcuate surface 80 of the catched portion 9 is always brought into substantially vertical contact with the second claw portion 34 of the catcher 14 in the engaging posture that moves left and right. , Can convey power efficiently.

  In addition, the inclined surface 79 and the arcuate surface 80 of this example may be formed on the catched portion 9 of the example.

  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. Further, only the door retracting device may be provided without providing the 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. The catch portion in the upper catcher is a side sectional view showing a state immediately before the engagement. 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 a disassembled perspective view of the to-be-caught member same as the above. It is a sectional side view which shows the state which the to-be-caught part contact | abutted to the lower edge surface of the insertion port, when the position of the same to-be-guided member has shifted | deviated below with respect to the drawing-in mechanism part. It is a bottom view of the member to be caught of other examples, (a) shows the state where the part to be caught contracted, and (b) shows the state where the part to be caught was extended. It is a disassembled perspective view of the to-be-caught part same as the above. It is explanatory drawing which shows the expansion | extension state of a to-be-caught part, (a) shows the state just before a to-be-caught part engages with a catcher, (b) shows the state which the door closed.

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 28 Moving member 29 Elastic member 36 Opening part 71 Elastic body 76 for extension 76 Contact part

Claims (5)

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 is slidable in the longitudinal direction of the upper horizontal frame and detachable from the caught part when the door is closed to a predetermined opening angle. A door pull-in device comprising: a catcher that engages with the catcher; and a drive unit that drives the catcher engaged with the catched portion to the suspension side in the longitudinal direction of the upper horizontal frame to close the door, The drive unit includes a moving member that is provided with the catcher and is movable in the longitudinal direction of the upper horizontal frame, and an elastic force in a direction that expands and contracts in the longitudinal direction of the upper horizontal frame to drive the moving member to the suspension side. An elastic member to be biased; Door pull device, characterized in that constructed. 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 is slidable in the longitudinal direction of the upper horizontal frame and detachable from the caught part when the door is closed to a predetermined opening angle. A door pull-in device comprising: The catcher has a first claw portion that is substantially U-shaped in front view and has a first claw portion that protrudes downward at a position on the hanging side and a second claw portion that protrudes downward at a position on the hand side. And an opening formed between the second claw portion Door pull device, characterized in that the catch portion is obtained by a freely engageable releasably to. The substantially reverse U-shaped catcher is provided on the moving member so as to be rotatable in a range from a standby posture in which the catcher opens obliquely downward on the hand side to an engagement posture in which the catcher is opened substantially vertically downward. When the door opening angle is less than the predetermined opening angle, the rail portion that travels along the longitudinal direction of the upper horizontal frame in a state where the catcher is in the engaging posture, and the door opening angle is equal to or larger than the predetermined opening angle. Sometimes, the lock part that detachably engages with the catcher and holds the catcher in the standby position, and the first claw part of the catcher that is held in the standby position by closing the door and the catched part is suspended. The door retractor according to claim 2, further comprising a guide portion that rotates the catcher to an engagement posture along the rail portion when pressed to the side. 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 is slidable in the longitudinal direction of the upper horizontal frame and detachable from the caught part when the door is closed to a predetermined opening angle. A door pull-in device comprising: A door retracting device, wherein the catched portion is provided so as to be movable up and down with respect to the door, and the door is provided with a holding portion that holds the catched portion at an arbitrary position in the vertical direction. 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 is slidable in the longitudinal direction of the upper horizontal frame and detachable from the caught part when the door is closed to a predetermined opening angle. A door pull-in device comprising: a catcher that engages with the catcher; and a drive unit that drives the catcher engaged with the catched portion to the suspension side in the longitudinal direction of the upper horizontal frame to close the door, The catched portion can be expanded and contracted in the protruding direction, and an elastic body for extension is provided on the catched portion so as to extend the catched portion with respect to the catched portion, and the door is closed on the upper horizontal frame. When Serial door pull device, characterized in that the abutment portion that contracts 該被 catch portion is provided in contact with the projecting end of the catch portion.

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