JP2010090571A - Slide assisting device of sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively exhibit the slide assisting function of a sliding door while suppressing the rise of the device cost. <P>SOLUTION: This slide assisting device of a sliding door includes a head jamb side engagement member (a trigger 60 in a first embodiment) provided to a head jamb 70, a door neck side engagement member (a tongue piece 492 in the first embodiment) provided to a door neck member 20 side engaged with the engagement plate 60 within a predetermined area in the moving zone of a fitted door 90, and a spring force transmission mechanism which comprises coiled springs 50, 50' imparting biasing forces to the fitted door 90 by the movement of the fitted door 90 with the head jamb side engagement member and the door neck side engagement member engaged with each other and which functions so as to assist the movement of the fitted door 90 utilizing the accumulated biasing forces of the coiled springs 50, 50'. At least one of the head jamb side engagement member and the sliding door side engagement member is set within a predetermined vertical width, and these members are installed so as to be engaged with each other in the lateral direction to the sliding direction of the sliding door. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sliding door slide assist device configured to assist a closing or opening operation when closing or opening a sliding door once opened or closed.

  The slide assist device is generally used as an automatic closing device for a sliding door (including a sliding door type). In principle, a sliding spring provided between the sliding door and the door frame is applied in the closing direction. (For example, refer patent document 1).

  In this type of device, a spring force is not applied throughout the entire stroke of the sliding door, but is applied only through the latter half of the stroke via a spring force transmission mechanism (hereinafter referred to as a partial assist method, for example, Patent Document). 2) is known.

The spring force transmission mechanism in this partial assist type device is composed of, for example, a catch body provided to project upward on one end side of the tension spring and a hook body provided to project downward on the door frame side, When the sliding door slides in the opening direction, the catch body and the hook body engage on the upper side of the sliding door, push the catch body with the hook body to extend the pulling spring, and rotate the catch body around the horizontal axis in the extended state. The engagement is released and stopped at that position, and the catch body and the hook body are engaged on the upper side of the sliding door in the second half of the stroke when sliding in the closing direction, thereby rotating the catch body to the original posture. The pulling spring is released, and the spring force (more precisely, the spring reaction force) is applied to the sliding door as an assist force in the closing direction.
Japanese Utility Model Publication No. 57-77570 JP 2008-156851 A

  In such a partial assist system, the door frame side member (hook body in the above example) and the sliding door side member (same catch body) constituting the spring force transmission mechanism are engaged and disengaged above the sliding door. In order to perform the extension / release operation of the spring, it is assumed that the positional relationship between these members is constant. In other words, the engagement / disengagement function does not function properly even if the two are too far apart or too close.

  However, there are dimensional errors, assembly errors, and the like in sliding doors and door frames in which such slide assist devices are installed. The sliding doors and door frames installed with these errors and the like have different vertical positional relationships each time they are installed, and thus the engagement / disengagement relationship may not function properly.

  In addition, in order to eliminate the gap between the sliding door and the door frame based on the error, an adjuster for adjusting the vertical height may be attached to the door wheel, and as a result of adjusting the vertical position by the adjuster, The sliding door may tilt. Even in such a case, the vertical positional relationship between the sliding door side and door frame side members is out of order, resulting in malfunction.

  In such a case, like the assist device described in Patent Document 2, it is also known that the engagement / disengagement action is appropriately performed by adjusting the protrusion amount of the door frame side engagement member. However, the adjustment work is not only troublesome, but also has a problem that the cost of the apparatus increases due to an increase in the number of parts.

  The present invention has been made in view of such a conventional situation, and provides a sliding assist device for a sliding door that can be engaged and disengaged appropriately and inexpensively regardless of dimensional errors and assembly errors. The purpose is that.

  According to the first aspect of the present invention, the sliding assist force is exerted in at least one of the opening direction and the closing direction with respect to the sliding door whose top portion is loosely fitted in the guide groove of the duck and whose lower edge portion is supported by the guide portion of the sill. In the sliding door slide assist device to be provided, a frame provided at the top of the sliding door, a pulling spring accommodated in a free state at one end in the frame, and the sliding spring when sliding in one direction of the sliding door A spring force transmission mechanism that extends and applies an urging force of a pulling spring as the slide assist force when sliding in the opposite direction. A mating member and a sliding door side engaging member that engages on the side of the sliding door in a predetermined range within a moving range of the sliding door attached to the free end side of the pulling spring. Have, before At least one of the Kamoi side and the sliding door side engaging member is set to a predetermined vertical width, and each installation position is set to engage with each other in the lateral direction with respect to the sliding direction of the sliding door. It is characterized by.

  According to such a configuration, one of the Kamoi side and the sliding door side engaging member provided respectively in the Kamoi and the sliding door is engaged on the side of the sliding door, so that the top surface of the sliding door and the lower surface of the Kamoi guide groove The vertical width can be sufficiently secured as compared with the conventional assist device that engages in a relatively narrow space. In addition, since at least one of the head side and the sliding door side is set to a predetermined vertical width, even if there is a change in the relative positional relationship between the vertical side and the sliding door side due to dimensional errors, assembly errors, etc., the predetermined width Variations in the vertical positional relationship such as the error can be absorbed by the width dimension of the engagement member formed on at least one side, so that the engagement members are securely engaged with each other.

  Moreover, with this configuration, there is no need to separately provide an adjustment device for adjusting the fluctuation in the relative positional relationship between the upper and lower sides, and accordingly, an increase in cost can be suppressed and the adjustment of the preparation device can be suppressed. It is possible to engage and disengage the mooring side and sliding door side engaging members at low cost and easily without requiring work.

  In the first aspect of the present invention, it is preferable that the sum of the vertical dimensions of the head and sliding door side engaging members is set to be substantially the same as or larger than the vertical dimension of the groove wall of the guide groove (invention 2). . In this way, the frame body is provided at the top of the sliding door that is loosely fitted into the guide groove, and the top of the sliding door is free to play in the guide groove, coupled with the fact that the head-side engagement member is provided within the guide groove. As long as they are fitted, the two engaging members are in contact with each other at least at any position in the vertical dimension, and are reliably engaged regardless of the variation in the vertical positional relationship.

  Moreover, in these inventions, the stagnation-side engaging member includes a protruding portion that protrudes from the groove wall of the guide groove toward the sliding door, and a flange portion that extends from at least one of the upper and lower ends of the protruding portion. It is preferable that this flange part is attached to parts other than the groove wall in Kamoi, for example, the ceiling wall surface of a guide groove, or the lower surface of a Kamoi (Claim 3). By doing so, it is reliably prevented that the flange portion for attaching the head-side engaging member to the head-portion interferes with the sliding door-side engaging member and malfunctions.

  Moreover, in these inventions, it is preferable that the sliding door side engaging member is set so that the lower edge part is located below the opening part of a guide groove (Claim 4). By the way, in this type of assist device, the sliding door side engaging member fails to engage with the head-side engaging member, so that the tension spring cannot be properly extended, or the biasing force of the tension spring is used as the slide assist force. There may be a problem that the assist device cannot function normally, such as being unable to be granted. In such a case, it has been necessary to adjust the assist device by removing the sliding door from the duck and predicting that such inconvenience is caused by the operation of the sliding door. However, since the lower end portion of the sliding door side engaging member is exposed to the outside from the head by configuring as in the fourth aspect, the operating state of the assist device can be easily visually confirmed, and an erroneous operation can be performed. If it occurs, it can be easily adjusted to a normal state by operating the exposed part.

  In these inventions, a pair is provided on the sliding door so that one side provides the sliding assist force toward the opening direction to the sliding door and the other applies the sliding assist force toward the closing direction on the sliding door. (Claim 5) is preferable. By doing so, the slide assist device performs its function both when the sliding door is opened and when it is closed, so that both the sliding door can be easily opened and closed, and both the sliding door remains unopened and left unopened. Disappear.

  In these inventions, the frame body is provided with a guide slit for guiding the sliding door side engaging member in the sliding direction of the sliding door, and the sliding door side engaging member is rotatable about the vertical axis with respect to the pulling spring. 1st and 2nd latching | locking part which is selectively attached to the mooring side engaging member by this rotation is provided, and a 1st latching | locking part is the mooring side clerk at the time of sliding toward one direction of a sliding door. The pulling spring is extended by being locked to the joint member, and the sliding door side engaging member is rotated in a predetermined direction when the sliding door side engaging member reaches the terminal end of the guide slit, whereby the first locking portion is engaged with the mooring side. The slide member is rotated in the opposite direction when the second locking portion is locked to the mooring-side engaging member when the sliding member moves away from the joint member and is held at the end of the guide slit and moves in the other direction of the sliding door. Then the tension spring is released Assist force is preferable to be composed to be applied (claim 6) to the sliding door in its urging force.

  According to such a configuration, it is specifically realized while ensuring the functions of the apparatus while suppressing an increase in apparatus cost with a simple structure.

  In each of the above-mentioned inventions, it is preferable that the frame is configured as a part of the door of a sliding door that is loosely fitted in the guide groove of the head (Claim 7). In this way, the top of the sliding door can be replaced with a frame instead of the original sliding door, so that a normal sliding door without an assist function can be provided with an assist function according to the present invention by a simple renovation process. It can be refurbished to the one provided.

  According to the sliding assist device for sliding doors according to the present invention, the head side and the sliding door side engaging member respectively provided on the head and the sliding door are configured to engage on the side of the sliding door, and at least one side is Since it is set to a predetermined vertical width, even if there is a change in the relative positional relationship between the head and sliding doors due to dimensional errors, assembly errors, etc., the width dimension of the engagement member on at least one side formed in the predetermined width Thus, the error can be absorbed, whereby both engaging members can be reliably engaged with each other.

  Therefore, if the relative positional relationship between the mooring side and the sliding door side changes due to dimensional errors, assembly errors, etc., adjust the relative positional relationship between the upper and lower engaging members on the mooring side and the sliding door side separately as in the past. There is no need to provide it, and accordingly, it is possible to contribute to reduction of the apparatus cost, and troublesome adjustment work can be made unnecessary.

  FIG. 1 is a partially cutaway perspective view showing a standing door to which a sliding door sliding assist device according to a first embodiment of the present invention is applied. In FIG. 1, the X direction is referred to as the left-right direction, and the Y direction is referred to as the front-rear direction. Incidentally, the “side of the sliding door” in the present invention refers to the Y direction. In the example shown in FIG. 1, the standing door 90 is opened when heading in one of the left and right directions and closed when heading in the other direction. It will be explained that it will be opened to the right.

  As shown in FIG. 1, in the slide assist device 10 of the first embodiment, the top part is loosely fitted in the guide groove 71 for opening the lower surface provided in the Kamoi 70, and the lower edge portion is opened and closed in the sill 80. It is intended for a so-called standing door (sliding door) 90 that can be opened and closed by moving forward and backward in the left-right direction while being fitted in a lower guide groove (guide portion) 81 provided so as to extend to . The groove width dimension of the guide groove 71 for the head is set slightly wider than the dimension obtained by adding the amount of protrusion of the hooking member 49 to be described later from the rectangular cylinder 30 to the longitudinal width dimension of the rectangular cylinder 30 to be described later. .

  The standing door 90 includes a flat plate-like door main body 91, a blindfold plate 92 provided on the upper edge of the door main body 91, and a pair of left and right doors 93 attached to the lower edge of the door main body 91. And. The standing door 90 is the same as that applied to the sliding door slide assist device 10 of the second embodiment described later.

  The slide assist device 10 according to the first embodiment applied to such a standing door 90 includes a pair of left and right nose members 20 attached to the left and right symmetrical positions of the upper edge portion of the door body 91, and the nose. Corresponding to the member 20, a pair of left and right triggers (kamoi side engaging members) 60 fixed to the front inner wall (groove wall) 73 of the duck guide groove 71 of the duck 70 is provided. The pair of triggers 60 are for engaging with the hook members 49 on the corresponding one side of the pair of nose members 20 when the standing door 90 is opened and closed. The front inner wall 73 is attached to the left and right symmetrical positions.

  The reason why the slide assist device 10 is provided in a pair of left and right is to be able to enjoy the assist function of the slide assist device 10 both when the standing door 90 is opened and when it is closed.

  The front-rear width dimension of each door member 20 is set to be slightly smaller than the thickness dimension of the standing door 90 (specifically, approximately 2/3 of the thickness dimension of the standing door 90). A rectangular parallelepiped bifurcated piece 29 having a mounting gap 291 is fixed to the facing end face of each door nose member 20. Each mounting gap 291 is provided on the opposite surface of the forked piece 29 so as to extend in the vertical direction. In the first embodiment, the fore-and-aft width dimension of the bifurcated piece 29 is set slightly larger than that of the nose member 20, whereby the front edge of the bifurcated piece 29 protrudes forward from the nose member 20. It is in a state.

  The left and right end portions of the blindfold plate 92 are fitted into the mounting gaps 291 of the pair of bifurcated pieces 29, thereby filling a gap formed between the pair of door head members 20, thereby passing this portion. The other side is blindfolded.

  Hereinafter, the sliding door slide assist device 10 will be described in more detail with reference to FIGS. FIG. 2 is an exploded perspective view, partly cut away, showing the left-side door nose member 20 according to the first embodiment, and FIGS. 3 and 4 are assembled perspective views thereof. 3 particularly shows a state in which the standing door 90 is closed, and FIG. 4 shows a state in which the standing door 90 is opened. 3 and 4, the trigger 60 is not shown outside the circle, but the relative positional relationship between the trigger 60 and the tongue piece 492 is shown in the circle. FIG. 5 is a cross-sectional view taken along line VV of the diagram in the circle of FIG. 2 to 5, the direction indications by X and Y are the same as in FIG. 1 (−X: leftward, + X: rightward, −Y: forward, + Y: backward).

  Further, in FIGS. 2 to 5, only the left side of the door nose member 20 and the trigger 60 that are provided in a pair symmetrically is shown. The configuration on the right side is the same as that on the left side, except that the configuration on the right side is symmetrical to the left side. The left door member 20 assists the closing operation when the standing door 90 is closed, and the right door member 20 assists the opening operation when the standing door 90 is opened.

  First, as shown in FIG. 2, the sliding door slide assist device 10 according to the first embodiment includes a pair of left and right doorsaw members 20 attached to the left and right symmetrical positions of the upper edge of the door body 91, and the doorhead member 20. Corresponding to the pair of left and right triggers (moor side engaging members) 60 provided on the front inner wall 73 of the head groove 71 for the head.

  The pair of triggers 60 are for engaging with a later-described tongue piece 492 of a corresponding one of the pair of neck members 20 when the standing door 90 is opened and closed. The inner wall 73 is attached to a symmetrical position.

  The nose member 20 includes a rectangular tube 30 into which the first edge block 22 and the second edge block 23 are fitted at respective end portions, a shock absorber 40 installed in the rectangular tube 30, and the shock absorber 40. And a coil spring (pull spring) 50 installed in the rectangular cylinder 30 in parallel with the second edge block 23 via the shock absorber 40 and the coil spring 50, and in the rectangular cylinder 30 A slide block 45 that is movably mounted, and a tongue piece 492 that is attached to the slide block 45 and that is engaged with or released from the trigger 60 by opening and closing the standing door 90. Configured. The shock absorber 40 has a length dimension set to approximately half of the dimension in the left-right direction of the rectangular tube 30.

  And the spring force transmission mechanism which concerns on this invention in 1st Embodiment is the trigger (moor side engaging member) 60 provided in the head 70, and the slide block 45 attached to the free end part side of the coil spring 50, and The hook member 49 engages with the trigger 60 within a predetermined range within the moving range of the standing door 90 attached to the slide block 45.

  The first edge block 22 is attached to the left end portion of the rectangular tube body 30 shown in FIG. 2, and has a substantially rectangular parallelepiped block main body 221 fitted into the rectangular tube body 30, and the block main body 221. A protruding block 222 slightly larger than the block main body 221 extending from the left end surface toward the left, and a pedestal having an L-shape in plan view protruding from the right end surface of the block main body 221 toward the right And a block 223.

  The block main body 221 is housed in the rectangular tube 30 with the four sides in contact with the inner wall surface of the rectangular tube 30. The block main body 221 has screw holes 221a threaded on the upper and lower surfaces, and the screws S penetrating the rectangular tube body 30 are screwed into these screw holes 221a, whereby the first edge block 22 is square tube. Fixed to the body 30.

  The protruding block 222 is set to have the same shape as seen from the end face of the rectangular tube body 30 when viewed from the left-right direction, whereby the protruding block 222 protrudes in a state in which the edge block 21 is fitted inside the rectangular tube body 30. The peripheral surface of the block 222 is flush with the peripheral surface of the rectangular tube 30. In the protruding block 222, a through hole 222a extending in the vertical direction is formed, and a screw S is inserted into the through hole 222a and screwed on the upper surface of the standing door 90. The left end portion of the door nose member 20 is fixed to the standing door 90 by being screwed and fastened.

 The pedestal block 223 receives the rear surface side of the hooking member 49, and includes a pedestal 223a that protrudes rightward from a substantially central portion of the block body 221 in the front-rear direction, and a right side of the pedestal 223a. It consists of leg portions 223b that are folded back from the edge portion. The rear edge portion of the leg portion 223b is dimensioned so as to be abutted against the rear inner wall surface of the rectangular tube 30.

  The second edge block 23 is for attaching the right end portions of the shock absorber 40 and the coil spring 50. The second edge block 23 is dimensioned so as to be fitted into the rectangular cylinder 30 in contact with the inner wall surface, and extends integrally from the left end surface of the bifurcated piece 29. In the second edge block 23, a circular hole 231 for fitting the right end portion of the shock absorber 40 is recessed at a lower position of the left surface, and an upward position of the circular hole 231 is directed upward. A Y-shaped piece 232 having a Y-shape as viewed from the protruding left and right direction is provided. This Y-shaped piece 232 is for locking the right end of the coil spring 50.

  Further, screw holes 233 extending in the vertical direction are respectively screwed on the upper and lower surfaces of the second edge block 23. Then, in a state where the second edge block 23 is inserted into the rectangular tube 30 from the right-side opening, the screw S penetrating the rectangular tube 30 is screwed into the screw hole 233 and fastened to thereby form the second edge block. 23 is fixed to the rectangular tube 30.

  Further, a caulking hole 234 is formed in the second edge block 23 at a position corresponding to the circular hole 231 so as to cross the circular hole 231. The caulking hole 234 is used for caulking the pin P through a pin (vertical axis) P that penetrates the shock absorber 40 in a state where the right end portion of the shock absorber 40 is fitted into the circular hole 231. is there.

  On the other hand, the bifurcated piece 29 integral with the second edge block 23 is provided with a through hole 292 extending in the vertical direction, and a screw S is screwed to the upper edge surface of the standing door 90 through the through hole 292. The right end portion of the door nose member 20 is fixed to the standing door 90 by being screwed into a screw hole (not shown) and fastened.

  The rectangular tube 30 has a first angle member 31 in which the front side of the metal plate that is U-shaped in an end view is open, and a rear side that is externally fitted to the first angle member 31 from the front over the entire length. It consists of the 2nd angle material 32 which exhibits a U-shape by the end surface view of a state.

  The first angle member 31 is screwed with screw holes 315 at positions corresponding to the screw holes 221a and 233 of the front and rear edge blocks 22 and 23 in the upper and lower horizontal plates 314, respectively. An insertion hole 324 for inserting the screw S into the angle member 32 at positions corresponding to the front and rear screw holes 315 in the upper and lower horizontal plates 323 and screwing the screws S into the screw holes 233 of the second edge block 23. Are respectively drilled.

  Therefore, the block main body 221 of the first edge block 22 is fitted into the left end portion of the square tube body 30 in a state where the second angle member 32 is externally fitted to the first angle member 31 to form the square tube body 30. In addition, in a state where the second edge block 23 is fitted to the right end portion of the rectangular tube body 30, the screw S is inserted into the screw hole of the first edge block 22 via the insertion hole 324 and the screw hole 315 at the front and rear of the rectangular tube body 30. The first angle member 31 and the second angle member 32 are integrated by screwing into the screw holes 233 of 221a and the second edge block 23, respectively, and the first and second edge blocks 22 are integrated into the rectangular tube 30. , 23 are fixed.

  In the present embodiment, the rectangular cylinder 30, the first edge block 22 attached to the left end of the rectangular cylinder 30, and the second edge block 23 attached to the right end of the present invention are used in the present invention. Such a frame is formed.

  In the first embodiment, the guide slit 33 extending in the left-right direction and the square hole 34 having a vertical width larger than that of the guide slit 33 connected to the guide slit 33 are the vertical plates 321 of the second angle member 32. On the side. The guide slit 33 is provided so as to extend to the left slightly starting from the left position from the center in the left-right direction of the vertical plate 321 of the second angle member 32. The square hole 34 is connected to the left end portion of the guide slit 33. The square hole 34 is formed so as to extend over substantially the entire vertical width of the vertical plate 321.

  As shown in FIG. 3, the shock absorber 40 is built in the rectangular cylinder 30, and an inner cylinder 41 disposed on the left side in the rectangular cylinder 30, and the inner cylinder 41 is provided with an outer cylindrical body 42 fitted from the right side in a sliding contact state. The shock absorber 40 is intended to gently assist the buffering of the sudden movement of the standing door 90 when the slide assist device 10 assists the opening / closing operation of the standing door 90.

  For such a buffering action, a one-way valve (not shown) is provided at an appropriate position of the shock absorber 40, and when the inner cylinder 41 is pulled out from the outer cylinder 42, the one valve is opened and air flows into the shock absorber 40. On the other hand, when the inner cylinder 41 is pushed into the outer cylinder 42, the one valve is in a half-opened state, and by applying a large resistance to the airflow, the outer cylinder 42 of the inner cylinder 41 is moved to the outer cylinder 42. The indentation speed is made gentle.

  A first bracket 416 with an insertion hole 416a is provided at the left end of the inner cylinder 41, and a second bracket with an insertion hole 426a is provided at the right end of the outer cylinder 42. A bracket 426 is provided. The insertion hole 416 a of the first bracket 416 is for connecting the inner cylinder body 41 to the slide block 45 through the pin P.

  The insertion hole 426a of the second bracket 426 allows the pin P inserted through the caulking hole 234 to be inserted in a state where the right end portion of the outer cylindrical body 42 is fitted into the circular hole 231 of the second edge block 23. With this, the right end portion of the outer cylindrical body 42 is fixed to the second edge block 23.

  The coil spring 50 is interposed between the second edge block 23 and the slide block 45 and applies an urging force to the slide block 45. A circular locking piece 55 is concentrically fixed to each end of the coil spring 50. The left one of these circular locking pieces 55 is locked to the slide block 45, and the right one is locked to the second edge block 23, whereby the coil spring 50 is connected to the slide block 45 and the second block. It is stretched between the edge blocks 23.

  The slide block 45 accumulates the assist force (specifically, the urging force of the coil spring 50) to assist the opening / closing operation of the standing door 90, and the accumulated assist force (attachment of the coil spring 50). When the force is applied to the opening / closing operation of the standing door 90, it slides in the rectangular tube 30.

  The slide block 45 includes a block base body 451 having a rectangular parallelepiped shape, a pair of upper and lower shaft support plates 452 formed by cutting out a vertical center portion of the left front corner portion of the block base body 451, and a pair of these. A gap between the projecting piece 453 projecting forward from the block base 451 at the right position between the shaft support plates 452 and the forked portion formed at the right end of the block base 451 extends in the up-down direction. Is provided with an open Y-shaped piece 454.

  A mounting space 46 for mounting the hooking member 49 is formed on the pair of shaft support plates 452. The pair of shaft support plates 452 are respectively provided with caulking holes 452a extending in the vertical direction at the front left corner. Then, in a state where the appropriate position of the hooking member 49 is fitted in the mounting space 46, the pin P is inserted into the caulking hole 452a so as to penetrate the hooking member 49, and the hooking member 49 is fixed to the slide block 45 by being caulked. It will be in the state of wearing. In the present embodiment, the sliding block 45 and the hooking member 49 form the sliding door side engaging member according to the present invention.

  The projecting piece 453 is set to have a vertical dimension slightly shorter than the vertical dimension of the guide slit 33, so that the slide block 45 is housed in the rectangular tube body 30. It is designed to protrude outside.

  Since the slide block 45 of this embodiment is provided with the protruding piece 453, when the standing door 90 is suddenly opened and closed, the protruding piece 453 is connected to the engagement strip (protrusion) 66 of the trigger 60. As a result, the rapid movement of the slide block 45 is suppressed by the action of the cylindrical member 40. As a result, the rapid opening and closing of the standing door 90 can be suppressed.

  The Y-shaped piece 454 is for locking the left circular locking piece 55 of the coil spring 50, and the shaft portion of the circular locking piece 55 is fitted into the gap of the Y-shaped piece 454. The left end of the coil spring 50 is attached to the slide block 45. On the other hand, the circular locking piece 55 at the right end of the coil spring 50 is locked to the Y-shaped piece 232 of the second edge block 23 as described above. The left and right circular locking pieces 55 are locked to the Y-shaped pieces 454 and 232 of the slide block 45 and the second edge block 23, so that the coil spring 50 is interposed between the slide block 45 and the second edge block 23. It will be in the state.

  Further, the block base 451 is provided with a circular hole 455 for fitting the left end portion of the inner cylinder 41 at a position facing the circular hole 231 of the second edge block 23 on the right end surface thereof, and A caulking hole 456 extending in the front-rear direction so as to cross the circular hole 455 is formed. Then, in a state where the left end portion of the inner cylindrical body 41 is fitted into the circular hole 455, the pin P is fitted into the caulking hole 456 and the insertion hole 416a of the first bracket 416 to be caulked to prevent the inner cylindrical body. 41 is connected to the slide block 45.

  The hooking member 49 is attached to the slide block 45 in accordance with the opening / closing operation of the standing door 90 (specifically, for the left slide assist device 10, the right side of the standing door 90 is closed during the closing operation). The slide assist device 10 is for engaging the trigger 60 and preventing relative movement of the slide block 45 with respect to the duck 70 during the opening operation of the standing door 90.

  The hooking member 49 has a triangular block 491 having a triangular shape tapered toward the left in a plan view and a left side in a plan view fixed to the left half of the front surface of the triangular block 491. And a tapering tongue 492. The triangular block 491 is mounted in the mounting space 46 formed between the pair of shaft support plates 452 of the slide block 45, and the vertical dimension is set slightly smaller than the vertical dimension of the mounting space 46. Yes. The triangular block 491 is formed with an insertion hole 491a corresponding to the caulking hole 452a extending in the vertical direction at a substantially central portion in the horizontal direction. Then, the pin P is swaged with the caulking hole 452a and the insertion hole 491a so that the hooking member 49 is slidably supported around the pin (vertical axis) P. Mounted on the block 45.

  The tongue piece 492 is set such that the vertical dimension is longer than the vertical dimension of the guide slit 33 and shorter than the vertical dimension of the square hole 34, and the horizontal dimension is set slightly shorter than the horizontal dimension of the square hole 34. Yes. And when the tongue piece 492 exists in the range of the guide slit 33, the said tongue piece 492 is the state which protruded the exterior of the square cylinder 30 from the guide slit 33, as shown in FIG.

  In this state, the right corner portion (first locking portion) 492a of the tongue piece 492 is in contact with an engagement strip 66 described later of the trigger 60, as shown in the circle of FIG. Therefore, if the standing door 90 is moved to the right to open in this state, the right corner portion 492a of the tongue piece 492 stops against the engaging strip 66, and the slide block 45 does not move further to the right. Only the rectangular tube 30 moves to the right while the slide block 45 remains in that position. By this movement, the coil spring 50 expands, and the urging force is accumulated.

  When the opening operation of the standing door 90 is continued, the tongue piece 492 finally passes through the guide slit 33 and reaches the square hole 34. The tongue 492 that has reached the square hole 34 has its inclined surface 492b engaged with the left edge of the square hole 34, and the inclined surface 492b is guided to the left edge of the square hole 34, as shown in FIG. Then, it rotates clockwise around the pin P and is immersed in the rectangular tube 30.

  The tongue piece 492 immersed in the rectangular tube 30 has its right corner portion 492a engaged with the right edge portion of the square hole 34. The door nose member 20 can further move to the right through the engagement strip 66.

  Conversely, when the closed standing door 90 is opened (that is, when the standing door 90 is moved to the left), the triangular shape of the hooking member 49 with the standing door 90 being opened to some extent. The front right edge portion (second locking portion) 491b of the block 491 engages with the engaging strip 66, whereby the hooking member 49 rotates counterclockwise around the pin P and the tongue piece 492 becomes a square hole. Exit from 34. Accordingly, the standing door 90 is opened by the urging force of the coil spring 50 while the hooking member 49 moves to the right relative to the guide slit 33 by the urging force of the coil spring 50.

  By the way, in this kind of assist device, the tongue piece 492 of the hooking member 49 fails to engage with the engaging strip 66 of the trigger 60 and the coil spring 50 cannot be properly extended, or the coil spring 50 The urging force cannot be applied as the slide assist force, and the slide assist device 10 may not function normally.

  Further, when the standing door 90 is fully closed or opened, the tongue piece 492 that should be changed from the engagement posture to the release posture may remain in the engagement posture. . In such a case, in the conventional apparatus, it was necessary to remove the standing door 90 from the duck 70 and adjust the slide assist apparatus 10.

  Therefore, as shown in FIG. 5, the lower part of the tongue piece 492 is exposed to the outside from the duck 70 by configuring the lower part of the hooking member 49 to protrude downward from the duck guide groove 71 as shown in FIG. 5. Therefore, when the tongue piece 492 does not operate normally, it can be separated, and when a malfunction occurs, the exposed portion of the tongue piece 492 is operated by hand. By doing so, it has become possible to easily adjust to a normal state.

  The trigger 60 is for engaging with the tongue piece 492 of the hooking member 49 during the opening / closing operation of the standing door 90. When the standing door 90 is opened or closed, The slide block 45 is attached to the front inner wall 73 side so as to be positioned between the projecting piece 453 of the slide block 45.

  The trigger 60 is formed by pressing a metal plate into a predetermined shape, and is formed in a single stepped shape when viewed from the left-right direction. The plate-like upper bracket piece (flange portion) 64 and this The lower bracket piece (flange portion) 65 positioned at a position below the upper bracket piece 64, and extends vertically between the front edge portion of the upper bracket piece 64 and the rear edge portion of the lower bracket piece 65. And an engaging strip 66 bulging rearward. The vertical dimension of the engaging strip 66 is set to be the same as the vertical length of the front inner wall 73 of the guide groove 71 for the duck.

  Further, the upper and lower bracket pieces 64 and 65 have through holes 67 at the center thereof. The upper bracket piece 64 is brought into contact with the ceiling of the duck guide groove 71 and the lower bracket piece 65 is brought into contact with the lower surface in front of the duck guide groove 71 of the duck 70. By inserting the wood screw M through 67 and 67 and screwing it into the headquarters 70, the trigger 60 is fixed to the headquarters 70 as shown in FIG.

  Hereinafter, the operation of the slide assist device 10 according to the first embodiment will be described with reference to FIGS. 6 and 7. 6 and 7 are partial cross-sectional explanatory views in plan view for explaining the operation of the slide assist device 10, and FIG. 6A shows the tongue piece 492 when the standing door 90 is closed. FIG. 6B shows a state in which the slide assist device 10 set to the engagement posture is positioned at the leftmost end, FIG. 6B shows a state in which the coil spring 50 is expanding due to the opening operation of the standing door 90, and FIG. When the standing door 90 is moved by a predetermined distance, the tongue piece 492 of the hooking member 49 reaches the square hole 34 and rotates clockwise around the pin P to change its posture to the release position. 6 (D) shows a state in which the tongue piece 492 is set in the release position, passing through the engagement strip 66 of the trigger 60, and maintaining the biasing force of the coil spring 50. Standing door 90 opens A state of continued operation are shown respectively.

  7A shows that the front right edge 491b of the triangular block 491 of the hooking member 49 is engaged with the engagement strip 66 of the trigger 60 by closing the standing door 90 once opened. FIG. 7B shows a state in which the tongue piece 492 is pulled out of the square hole 34 and changed in posture from the release posture to the engagement posture, whereby the right corner portion 492a of the tongue piece 492 is engaged with the engagement strip 66. Each is shown. 6 and 7 are the same as those shown in FIG. 8 (-X: leftward, + X: rightward, -Y: forward, + Y: backward).

  First, as shown in FIG. 6 (A), in a state where the standing door 90 is closed, the tongue piece 492 of the hooking member 49 is set to the engagement posture fitted into the guide slit 33, and the tongue piece The right corner 492a of 492 is engaged with the engagement strip 66 of the trigger 60. At this time, the coil spring 50 has a minimum length that does not substantially generate an urging force.

  When the standing door 90 is moved rightward and opened in this state, the tongue piece 492 may move rightward because its right corner 492a is engaged with the engagement strip 66 of the trigger 60. As a result, only the rectangular tube 30 moves rightward with the slide block 45 remaining in this position. Therefore, the coil spring 50 is extended by this movement of the rectangular tube 30 and the urging force is accumulated.

  When the movement of the rectangular tube 30 progresses and the tongue piece 492 is in a state corresponding to the square hole 34, the right corner portion 492a of the tongue piece 492 is relatively pressed toward the left by the engagement strip 66. In addition, since the left end portion of the inclined surface 492b is guided to the left edge portion of the square hole 34, the tongue piece 492 is rotated clockwise around the pin P, whereby FIG. As shown, the posture is changed to a release posture immersed in the rectangular tube 30 through the square hole 34.

  Next, the tongue piece 492 whose posture has been changed to the release posture is pulled rightward by the biasing force of the coil spring 50, and the right corner portion 492a of the tongue piece 492 stops against the front and rear portions of the right edge of the square hole 34 ( FIG. 6 (D)). As a result, the slide block 45 cannot move to the right relative to the rectangular tube body 30, and the coil spring 50 is in a state where the maximum urging force is held. Since the tongue piece 492 set to the release posture is released from the engagement state with the engagement strip 66, the tongue piece 492 is connected to the engagement strip 66 as shown in FIG. It is possible to open while spending 66.

  Then, when the standing door 90 once opened is moved to the left and opened, the front right edge 491b of the triangular block 491 engages with the engagement strip 66 as shown in FIG. Thus, the tongue piece 492 rotates counterclockwise around the pin P and changes its posture from the release posture with respect to the engagement strip 66 to the engagement posture with which the engagement strip 66 is engaged (FIG. 7 ( B)).

  The tongue piece 492 is pulled out of the square hole 34 by this posture change, and the state where the right corner portion 492a of the tongue piece 492 is locked to the right edge portion of the square hole 34 is eliminated. The triangular block 491 can enter the guide slit 33.

  As shown in FIG. 7B, when the tongue piece 492 engages with the engagement strip 66 and the triangular block 491 enters the guide slit 33, the coil spring 50 is extended by elastic deformation. The urging force acts to move the rectangular tube 30 to the left. As a result, the standing door 90 automatically moves to the left via the rectangular tube 30 with the assistance of the slide assist device 10. Closed.

  The slide assist device 10 according to the first embodiment has been described with reference to the example provided on the left side of the standing door 90 in FIGS. 2 to 7, but the right side is symmetrical to the left side. The configuration and operational effects are the same as those on the left side, except that assistance is provided when closing the standing door 90.

  As described in detail above, according to the slide assist device 10 according to the first embodiment, the hooking member 49 as the sliding door side engaging member provided in the standing door 90 is located on the side of the guide groove 71 for the Kamoi. Since it engages with the engagement strip 66 of the trigger 60 on the side, it engages in a relatively narrow space between the top surface of the standing door 90 and the lower surface (groove bottom) of the guide groove 71 for the head of the head. Compared with the assist device, the vertical width can be sufficiently ensured (specifically, up to the groove depth dimension of the guide groove 71 for duck). In addition, since at least one of the trigger 60 and the hooking member 49 is set to have a predetermined vertical width that securely engages with each other, the vertical movement on the side of the duck 70 and the standing door 90 due to a dimensional error, an assembly error, or the like. Even if there is a variation in the relative positional relationship, the variation in the vertical positional relationship such as an error can be absorbed by the width dimension of at least one engagement member formed in a predetermined width. Generation of inconveniences that do not engage with each other can be reliably prevented.

  In addition, with this configuration, there is no need to separately provide an adjustment device for adjusting fluctuations in the relative positional relationship between the upper and lower sides, and not only the cost increase can be suppressed, but also no adjustment work is required. become.

  Further, the sum of the vertical dimensions of the engaging strip 66 of the trigger 60 and the tongue piece 492 of the hooking member 49 is preferably set to be substantially the same as or larger than the vertical dimension of the groove wall of the guide groove 71 for the head. As a result, as long as the top of the standing door 90 is loosely fitted in the guide groove 71 for the moiger, the engagement strip 66 and the tongue piece 492 are in contact at least at any part in the vertical direction. Both can be reliably engaged regardless of the change in the positional relationship.

  Further, in the slide assist device 10 according to the first embodiment, the trigger 60 as the Kamoi side engaging member includes an engaging strip 66 projecting from the groove wall of the Kamoi guide groove 71 toward the standing door 90, and this engagement. It has an upper bracket piece 64 and a lower bracket piece 65 extending from the upper and lower sides of the joint 66, and these upper and lower bracket pieces 64, 65 are fixed to the side wall surface of the guide groove 71 for the momoi. It is possible to stabilize the attachment state of the strip 66 to the headquarter 70 and prevent the tongue piece 492 from malfunctioning.

  And since especially the hook member 49 is set so that the lower edge part may be located below the opening part of the guide groove 71 for duck, the operating state of the hook member 49 can be visually recognized easily. In addition, when the tongue piece 492 has not been realized even though the tongue piece 492 has to be set in a predetermined posture, the exposed portion of the hooking member 49 can be operated by hand. The tongue piece 492 can be adjusted to a normal posture as it should be.

  Further, in the present embodiment, two slide assist devices 10 are employed, and one slide assist device 10 is caused to function by a closing operation of the standing door 90 while the other slide assist device 10 is released from the standing door 90. Since it is made to function by the operation, the slide assist device 10 exhibits its function both when the standing door 90 is opened and when the closing door 90 is closed, thereby making it easy to both open and close the standing door 90. At the same time, it is possible to prevent the standing door 90 from being left unopened and left unopened.

  In addition, in the present embodiment, the cylindrical member 40, the slide block 45, the door member 20 in which the hook member 49, the coil spring 50, and the like are housed in the rectangular tube 30 are provided in the guide groove 71 for the Kamoi. It is comprised as a part of the nose of the stand-up door 90 loosely fitted by. Therefore, the normal standing door which does not have an assist function by a simple remodeling process in which the original nose of the top of the standing door not provided with the slide assist device 10 is replaced with the nose member 20 is added to the present invention. It can be reformed to those having such an assist function.

  In this way, by providing the symmetrical slide assist device 10 at the top of the standing door 90, it is possible to receive the slide assist by the slide assist device 10 in both the opening and closing operations of the standing door 90. .

  Hereinafter, a slide assist device 10 'according to a second embodiment of the present invention will be described with reference to FIGS. Among these drawings, first, FIG. 8 is an exploded perspective view showing a standing door to which a second embodiment of the sliding door slide assist device according to the present invention is applied, and FIG. 9 is an assembled perspective view thereof. is there. 8 and 9, the X direction is referred to as the left-right direction, and the Y direction is referred to as the front-rear direction. In particular, -X is referred to as the left, + X is the right, -Y is the front, and + Y is the rear.

  First, as shown in FIG. 8, the sliding assist device 10 ′ of the sliding door is loosely fitted in the guide groove 71 for opening the lower surface provided on the lower surface 70 on the lower surface 70, and the lower edge portion is opened and closed on the sill 80. It is intended for a so-called standing door (sliding door) 90 that can be opened and closed by moving forward and backward in the left-right direction while being fitted in a lower guide groove (guide portion) 81 provided so as to extend to . The groove width dimension of the guide groove 71 for the Kamoi is based on a dimension obtained by adding a protruding amount from the rectangular tube body 30 of an arrowhead piece (door nose side engaging member) 48 described later to a longitudinal width dimension of the rectangular cylinder body 30 described later. It is set slightly wider.

  The standing door 90 is the same as that adopted in the slide assist device 10 of the first embodiment, and is a flat plate-like door body 91 and a blindfold plate 92 provided on the upper edge of the door body 91. The door body 93 is provided with a pair of left and right doors 93 attached to the lower edge of the door body 91. The door wheel 93 is attached to a door wheel storage recess 931 formed by recessing a proper portion of the lower edge of the door body 91 so that the door wheel 93 cannot be seen from the outside in order to make the appearance look beautiful. .

  The sliding door 90 is slid between the upper part of the standing door 90 and the groove wall of the guide groove 71 of the heading 70 in a state where the standing door 90 is placed between the heading 70 and the sill 80 in the door frame of the building. A maintenance gap for maintaining the assist device 10 'is formed. By doing so, when a problem occurs in the slide assist device 10 ′, the trouble of the slide assist device 10 ′ is solved by inserting a finger through the gap without performing a troublesome work such as removing the standing door 90. Therefore, the workability of the maintenance work of the standing door 90 can be improved.

  The sliding door slide assist device 10 ′ applied to the standing door 90 has a symmetrical position of the upper edge portion of the door body 91 (specifically, the right end of the upper edge portion of the standing door 90, respectively). And a pair of left and right door nose members 20 ′ attached to the left end) and a rear inner wall (groove wall) 72 of the dug guide groove 71 corresponding to the nose member 20 ′. And a pair of left and right engagement plates (the Kamoi side engagement member) 60. The pair of engagement plates 60 ′ are for engaging with a later-described arrowhead piece 48 of the corresponding one of the pair of neck members 20 ′ when opening and closing the standing door 90. Respectively attached to the left and right symmetrical positions of the rear inner wall (groove wall) 72 on the rear side of the groove 71.

  The pair of left and right nose members 20 ′ are provided on the upper edge of the standing door 90. In the slide assist of the standing door 90, the standing door 90 is moved to the right (in this embodiment, the standing door 90 is set up). When the door 90 is moved in the closing direction), the right side nose member 20 'is functioned, while the standing door 90 is moved to the left side (in this embodiment, the left side is moved in the opening direction). This is to make the door nose member 20 'function.

  The front-rear width dimension of each door neck member 20 ′ is set slightly smaller than the thickness dimension of the standing door 90 (specifically, approximately 2/3 of the thickness dimension of the standing door 90). A rectangular parallelepiped bifurcated piece 29 having a mounting gap 291 is fixed to the opposing end surface of each nose member 20 '. Each mounting gap 291 is provided on the opposite surface of the forked piece 29 so as to extend in the vertical direction. The left and right end portions of the blindfold plate 92 are fitted into the mounting gaps 291 of the pair of forked pieces 29, so that a gap formed between the pair of nose members 20 'as shown in FIG. Is buried so that the other side through this part is blindfolded.

  Hereinafter, the sliding door slide assist device 10 ′ will be described in more detail with reference to FIGS. 10 to 13. FIG. 10 is an exploded perspective view showing a door nose member 20 ′ according to the second embodiment of the present invention, and FIG. 11 is an assembled perspective view thereof. 12 is a cross-sectional view taken along line XII-XII in FIG. 11, and FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 10 to 13, the X direction is referred to as the left-right direction, and the Y direction is referred to as the front-back direction. In particular, -X is referred to as the left, + X as the right, -Y as the front, and + Y as the rear. Incidentally, in FIGS. 10 to 13, only the right side of the door head member 20 ′ and the engagement plate 60 ′ provided symmetrically is shown. The configuration on the left side is the same as that on the left side, except that it is symmetrically formed with the right side. The right side nose member 20 ″ assists the closing operation when closing the standing door 90, and the left side nose member 20 ″ supports the opening operation when opening the standing door 90. Assist.

  The door nose member 20 ′ includes a pair of left and right edge blocks 21 each having a rectangular parallelepiped shape, a rectangular tube body 30 in which the pair of edge blocks 21 are fitted at both ends, and a cylindrical body built in the rectangular tube body 30. A member 40 ′, a coil spring (pull spring) 50 ′ built in the cylindrical member 40 ′, and a right end portion of the cylindrical member 40 ′ are attached. And an arrowhead piece 48 that engages or disengages. The length of the cylindrical member 40 ′ is set to be approximately half of the horizontal dimension of the vertical cylindrical body 30.

  In the left one of the pair of edge blocks 21 shown in FIGS. 10 to 12, the bifurcated piece 29 is integrally extended on the left surface side with the bifurcated portion facing leftward. On the right surface side, a cut groove 211 extending in the vertical direction is formed by being cut toward the left.

  Further, the edge block 21 is provided with a through hole 212 that is penetrated in the front-rear direction so as to pass through the cut groove 211. Further, a screw hole 213 extending in the left-right direction is screwed on the left surface of the left edge block 21. On the other hand, the right edge block 21 is not provided with the notch 211, and is provided with a through hole 212 similar to that on the left side and a screw hole 213 extending in the left-right direction on the right surface side. Yes.

  The rectangular tube 30 is formed by pressing a metal plate so as to exhibit a U-shape when viewed from the end, and the edge block 21 is fitted into both ends, and the first angle member 31 with the front side open is formed. The rear surface of the first angle member 31 that is fitted over the entire length of the first angle member 31 includes a second angle member 32 that has a U-shape when viewed from the end face in the open state.

  In the first angle member 31, screw holes 312 are respectively screwed at positions corresponding to the through holes 212 of the front and rear edge blocks 21 in the vertical plate 311, and in the second angle member 32, Insertion holes 322 through which the screws S are inserted are respectively formed at positions corresponding to the through holes 212 of the front and rear edge blocks 21 in the vertical plate 321.

  Further, a guide slit 33 elongated in the left-right direction is formed in the vertical plate 311 of the first angle member 31 by being cut in a penetrating state in the front-rear direction from the substantially central position in the left-right direction to the right. And a square hole 34 extending across the entire vertical width of the vertical plate 311 communicating with the right end of the guide slit 33 is provided.

  In the present embodiment, a frame body according to the present invention is formed by the rectangular tube body 30 and the pair of edge blocks 21 attached to the front and rear end portions of the rectangular tube body 30.

  Hereinafter, the cylindrical member 40 ′, the coil spring 50 ′, and the arrowhead piece 48 will be described in detail with reference to FIGS. 14 and 15 and with reference to other drawings as necessary. FIG. 14 is an exploded perspective view showing an embodiment of the cylindrical member 40 ′, and FIG. 15 is a partially cut-out assembled perspective view thereof. 14 and 15 are the same as those shown in FIG. 10 (−X: leftward, + X: rightward, −Y: forward, + Y: backward).

  As shown in FIG. 11, the cylindrical member 40 ′ is housed in the rectangular tube 30. As shown in FIG. 14, the cylindrical member 40 ′ is an inner cylinder disposed on the left side in the rectangular tube 30. 41 ', an outer cylinder 42' fitted on the inner cylinder 41 'from the right side, and the arrowhead piece 48 having a rectangular parallelepiped shape in appearance when fixed to the right end of the outer cylinder 42'. And a box body 43 for mounting. As shown in FIG. 14, the coil spring 50 'is stretched between the left end portion of the inner cylindrical body 41' and the right end portion of the outer cylindrical body 42 'in an extended state.

  In the second embodiment, the box body 43 and the arrowhead piece 48 form a sliding door side engaging member according to the present invention.

  The inner cylinder 41 'has a left plug member 411 for closing the left end opening. The left plug member 411 includes a columnar plug body 412 whose diameter is set so as to be press-fit into the inner cylinder 41 ′, and a first bracket 413 projecting leftward from the left end surface of the plug body 412. And a second bracket 414 projecting rightward from the right end surface.

  The plug body 412 is provided with a vent hole 415 penetrating in the left-right direction, and a check valve (not shown) is provided in the middle of the vent hole 415. This check valve is set so that the air flow toward the inside of the cylindrical member 40 ′ can be easily circulated, while the air flow from the inside of the cylindrical member 40 ′ to the outside becomes difficult to circulate due to a large resistance. A function as a shock absorber when closing the artificial door 90 is achieved.

  The first bracket 413 is for connecting the cylindrical member 40 ′ to the left edge block 21. The first bracket 413 has a through hole 413a. The edge block 21 is sandwiched between the first and second angle members 31 and 32 in a state where the first bracket 413 is inserted into the cut groove 211 of the left edge block 21, and the second angle member 32 of the second angle member 32 is held in this state. By inserting the screw S through the insertion hole 322, the through hole 212 of the edge block 21 and the through hole 413a of the first bracket 413, and screwing the screw S into the screw hole 312 of the first angle member 31, The cylindrical member 40 ′ is in a state mounted in the rectangular tube body 30.

  The second bracket 414 is provided with a locking hole 414a for locking the left end of the coil spring 50 '(specifically, the left hook 51 described later).

  The outer cylindrical body 42 ′ is closed at the right end by a right plug member 421. The right plug member 421 includes a plug main body 422 that is press-fitted into the outer cylindrical body 42 ′, and a third bracket 423 that protrudes leftward from the left end surface of the plug main body 422. The third bracket 423 is provided with a locking hole 423a for locking the right end of the coil spring 50 '(specifically, a right hook 51 described later).

  The coil spring 50 ′ is installed between the second bracket 414 of the inner cylinder 41 ′ and the third bracket 423 of the outer cylinder 42 ′ in the mounted state, whereby the inner cylinder 41 ′ is attached to the outer cylinder 42. It is energized toward the direction of immersing in. Hooks 51 are formed at both ends of the coil spring 50 '. The coil spring 50 ′ is in a state of being attached to the cylindrical member 40 ′ when these hooks 51 are locked in the locking holes 414 a and 423 a of the second and third brackets 414 and 423, respectively.

  The box 43 is for holding the arrowhead piece 48. The box 43 has a left face plate 431 fixed to the right end of the outer cylinder 42 'by welding or the like. The right side of the box 43 is open. In addition, the rear plate 432 of the box body 43 is provided with a long hole 433 extending in the left-right direction for passing a neck portion 482 described later of the arrowhead piece 48. The right end of the long hole 433 is open.

  Further, the top plate 434 of the box body 43 is provided with an insertion hole 434 a through which a shaft screw (vertical shaft) 44 for pivotally supporting the arrowhead piece 48 in the box body 43 is formed. A screw hole 435a for screwing the shaft screw 44 is screwed in the bottom plate 435.

  Therefore, by passing the shaft screw 44 through the insertion hole 434a and penetrating through the support hole 484 of the semicircular portion 483 of the arrowhead piece 48 and screwing the tip into the screw hole 435a, the arrowhead piece 48 is fixed to the shaft screw 44. It is mounted on the box 43 so as to be rotatable around.

  The top plate 434 and the bottom plate 435 have a circumference whose rear right corner is centered on the center of the insertion hole 434a and the screw hole 435a and whose radius is set to half of the longitudinal dimension of the top plate 434 and the bottom plate 435. The arc shape is set so as to be along, and the rear plate 432 is curved in plan view so as to follow this arc shape. Therefore, even if the arrowhead piece 48 rotates clockwise around the shaft screw 44, the arrowhead body 481 of the arrowhead piece 48 does not engage with the rear right corner of the box 43.

  As shown in FIG. 14, the arrowhead piece 48 protrudes from an arrowhead body 481 that has an isosceles triangular arrowhead shape in a plan view with a sharp tip at the back, and a front end surface of the arrowhead body 481. The neck portion 482 includes a semicircular portion 483 that extends from the front end of the neck portion 482 and has a semicircular shape in plan view. The arrowhead body 481 has a vertical dimension substantially the same as the vertical dimension of the box 43.

  The neck portion 482 protrudes forward from a substantially central portion in the vertical direction of the arrowhead main body 481. The protruding amount of the neck portion 482 is set to such a length that the neck portion 482 can protrude from the guide slit 33 to the outside in a state where the cylindrical member 40 ′ is housed in the square member 30 of the door neck member 20 ′.

  The semicircular portion 483 has a radius of curvature substantially equal to the left-right dimension of the neck portion 482. In the semicircular portion 483, the right half of the portion corresponding to the string in plan view is connected to the proximal end portion (front end portion) of the neck portion 482. A support hole 484 penetrating in the vertical direction is formed at a position slightly leftward from the center of the semicircular portion 483.

  The arrowhead piece 48 is inserted into the long hole 433 of the rear plate 432 through the neck portion 482 from the opening on the right side of the box body 43, and the shaft screw 44 is inserted into the support hole 484 of the semicircular portion 483 through the insertion hole 434 a. And it mounts | wears with the box 43 by screwing in the screw hole 435a of the baseplate 435, and fastening.

  The installation position of the arrowhead piece 48 is set so that the neck portion 482 protrudes from the elongated hole 433 by the thickness of the first angle member 31 in a state where the arrowhead piece 48 is mounted on the box body 43. Specifically, the drilling position of the insertion hole 434a through which the shaft screw 44 is inserted is set so as to be like this.

  The cylindrical member 40 ′ in which the coil spring 50 ′ is housed in the inner cylinder body 41 ′ and the outer cylinder body 42 ′ and the arrowhead piece 48 is mounted on the box body 43 is in a state where the standing door 90 is closed. Thus, as shown in FIG. 15, the minimum length is set by the biasing force of the coil spring 50 '. The cylindrical member 40 ′ in such a state is housed in the rectangular tube body 30 with the arrowhead main body 481 of the arrowhead piece 48 protruding outside from the first angle member 31.

  Further, as shown in FIG. 13, the lower part of the arrowhead main body 481 of the arrowhead piece 48 protrudes downward from the guide groove 71 for duck. The reason for this is the same as in the case of the first embodiment, so that the operating state of the slide assist device 10 ′ can be easily seen, and the arrowhead body 481 is exposed when it malfunctions. This is because it can be easily returned to the normal state by manually operating the portion.

  When the standing door 90 is opened and closed, the engagement plate 60 ′ engages with either the arrowhead main body 481 of the arrowhead piece 48 or the left side of the semicircular part 483, and causes the arrowhead piece 48 to rotate around the shaft screw 44. Thus, when the standing door 90 is closed, the closing operation is assisted (assisted).

  The engagement plate 60 'is formed by bending a metal plate into a convex shape. The engagement plate 60 ′ includes a pair of left and right skirt portions 61 and a bulging portion 62 that bulges forward between the pair of skirt portions 61. The vertical dimension of the engagement plate 60 ′ is set to be the same as the groove depth of the Kamoi guide groove 71.

  Such an engagement plate 60 ′ has the arrowhead body 481 of the arrowhead piece 48 on the right edge surface of the bulging portion 62 of the engagement plate 60 ′ with the standing door 90 closed as shown in FIG. The installation position is set so as to make contact.

  At least one screw hole 63 is screwed in each skirt 61, and the screw S penetrated from the rear surface side of the duck 70 is screwed and fastened to the screw hole 63, whereby the engagement plate 60 is engaged. ′ Is fixed to the groove wall of the duck guide groove 71 of the duck 70.

  FIG. 16 is a view of the slide assist device 10 ′ for explaining the protruding state of the arrowhead body 481 from the first angle member 31 and the positional relationship between the arrowhead body 481 and the engagement plate 60 ′ from the rear side. 16A shows a state in which the standing door 90 is closed, and FIG. 16B shows a state in which the standing door 90 is being opened. In addition, the direction display by X and Y in FIG. 16 is the same as in FIG. 10 (−X: leftward, + X: rightward, −Y: forward, + Y: backward). Incidentally, in FIG. 16, the left and right indicated by X are reversed from the left and right of the actual paper.

  As shown in FIG. 16 (A), in the state where the standing door 90 is closed, the neck portion 482 of the arrowhead piece 48 is fitted into the guide slit 33 of the first angle member 31 and is positioned at the leftmost end. The main body 481 protrudes rearward from the first angle member 31 at the leftmost position of the guide slit 33.

  On the other hand, the engagement plate 60 ′ is in contact with the arrowhead body 481 of the arrowhead piece 48 on the right edge surface of the bulging portion 62 in a state where the standing door 90 is closed. Therefore, when the standing door 90 is moved to the left and opened, the arrowhead main body 481 cannot move by engaging with the bulging portion 62. Therefore, as shown in FIG. It stays at the position engaged with 481 and moves in the guide slit 33 relatively to the right. At this time, since the outer cylindrical body 42 ′ integrated with the arrowhead main body 481 is also stopped, only the inner cylindrical body 41 ′ moves, whereby the coil spring 50 ′ expands and the urging force is accumulated. Become.

  The spring force transmission mechanism according to the present invention in the second embodiment is attached to the engagement plate (the duck side engagement member) 60 'provided in the duck 70 and the free end side of the coil spring 50'. An arrowhead piece (sliding door side engaging member) 48 that engages with the engaging plate 60 ′ within a predetermined range within the moving range of the standing door 90 is provided. According to such a spring force transmission mechanism, when the standing door 90 is opened starting from the state where the standing door 90 is closed, the arrowhead piece 48 is engaged with the engagement plate 60 '. Then, the coil spring 50 'is extended and its urging force is accumulated. On the other hand, once the standing door 90 that has been opened is closed, the urging force accumulated in the coil spring 50 ′ provides a force to assist (assist) the standing door 90 that is being closed. In this way, the standing door 90 can be closed very lightly, and the unclosed portion is reliably prevented.

  A finger is inserted between the lower edge surface of the rear portion of the duck 70 and the upper edge surface of the door main body 91 of the standing door 90 (the rear portion of the upper surface of the door main body 91 from the nose member 20 '). A maintenance gap d that can be maintained is formed. The vertical dimension of the door main body 91, the vertical dimension of the door nose member 20 ', the vertical dimension of the duck 70, the groove depth of the duck guide groove 71, and the like are set in relation to each other.

  Therefore, when closing the standing door 90 once opened, when the slide assist device 10 'is out of order, such as when a normal assist force by the coil spring 50' is not obtained (specifically, the arrowhead piece 48). When the rotation posture around the shaft screw 44 is not normal, etc., it is possible to visually recognize the malfunctioning state from the maintenance gap d, and insert the finger from the maintenance gap d to move the arrowhead body 481 left and right. By performing an operation such as moving it, the malfunction can be resolved.

  Hereinafter, the operation of the sliding door slide assist device 10 'according to the second embodiment will be described in more detail with reference to FIGS. 17 to 19 while referring to other drawings as necessary. FIGS. 17 to 19 are sectional views in plan view for explaining the operation of the slide assist device 10 ′ according to the second embodiment, and FIG. 17A shows a state in which the standing door 90 is closed, FIG. 17B shows a state in which the standing door 90 has started to be opened, and FIG. 18A shows a state in which the arrowhead main body 481 of the arrowhead piece 48 is engaged with the bulging portion 62 of the engagement plate 60 ′. 18B shows a state in which the standing door 90 is opened. FIG. 19A shows a state in which the standing door 90 is closed and the semicircular portion 483 of the arrowhead piece 48 is the engagement plate 60 ′. FIG. 19 (B) shows a state immediately before the standing door 90 is closed, in a state where the bulging portion 62 is being engaged.

  17-19, the inside of a circle is a partially enlarged view in plan view for explaining the relative positional relationship between the arrowhead piece 48 and the engagement plate 60 ', and the inside of the square is the arrowhead main body. It is the elements on larger scale for demonstrating the relative positional relationship between 481, the guide slit 33, and the square hole 34. FIG. Moreover, the direction display by X and Y in FIGS. 17-19 is the same as the case of FIG. 10 (-X: leftward, + X: rightward, -Y: forward, + Y: backward).

  First, as shown in FIG. 17A, when the standing door 90 is closed, the arrowhead main body 481 of the arrowhead piece 48 projects to the outside from the guide slit 33 of the rectangular tube body 30, The portion is in contact with the right edge portion of the bulging portion 62 of the engagement plate 60 '.

  When the standing door 90 is moved leftward in this state and opened, the arrowhead main body 481 has a vertical dimension (a dimension in a direction perpendicular to the paper surface of FIG. 17) as shown in FIG. ) Is larger than the groove width dimension of the guide slit 33, and is prevented by the edge of the guide slit 33 and prevented from turning clockwise around the shaft screw 44. As a result, the arrowhead main body 481 (ie, the arrowhead main body 481 and Only the first angle member 31 moves with the standing door 90 while the integral second angle member 32) maintains the current position.

  As a result, the coil spring 50 'interposed between the first and second angle members 31 and 32 expands, so that the biasing force of the coil spring 50' increases as the opening of the standing door 90 increases. Has been accumulated.

  And when the arrowhead main body 481 passes the right end part of the guide slit 33 relatively by continuing opening operation with respect to the standing door 90, the said arrowhead main body 481 will be in the state facing the square hole 34 of the magnitude | size which can be fitted. (FIG. 18A), it is pushed relative to the bulging portion 62 of the engagement plate 60 ′ and rotates around the shaft screw 44 in the clockwise direction.

  The arrowhead main body 481 is fitted into the square hole 34 by this rotation, and the contact state with the bulging portion 62 is eliminated. Instead, the left edge of the arrowhead body 481 is locked to the left edge of the square hole 34 as shown in the circle in FIG. It is impossible to move to At this time, the semicircular portion 483 of the arrowhead piece 48 protrudes rearward from the guide slit 33 by rotating clockwise around the shaft screw 44 and is positioned to the left of the bulging portion 62.

  Accordingly, as shown in FIG. 18B, the standing door 90 is opened to the maximum opening degree while maintaining this state (that is, the state where the coil spring 50 'is extended to the maximum extent). .

  Next, when the standing door 90 that has been opened is closed, the standing door 90 projects to the right from the guide slit 33 as shown in FIG. The semicircular portion 483 of the arrowhead piece 48 contacts the left edge portion of the bulging portion 62 of the engagement plate 60 '. Therefore, when the closing operation of the standing door 90 is continued in this state, the semicircular portion 483 is relatively pressed by the bulging portion 62 so that the arrowhead piece 48 rotates counterclockwise around the shaft screw 44. As a result, the semicircular portion 483 is immersed in the rectangular tube 30 through the guide slit 33, while the arrowhead main body 481 protrudes outside from the rectangular hole 34 and the neck portion 482 is fitted in the guide slit 33.

  Therefore, thereafter, as shown in FIG. 19B, the root portion of the arrowhead body 481 is detached from the left edge of the square hole 34, so that the arrowhead piece 48 can be moved while being guided by the guide slit 33. As a result, the standing door 90 can be lightly closed with the assistance of the coil spring 50 'without applying a particularly large force by compressing the coil spring 50' once expanded and the biasing force is accumulated. Become.

  The slide assist device 10 ′ according to the second embodiment has been described with reference to FIGS. 10 to 19 by taking the example provided on the right side of the standing door 90, but the left side is symmetrical with the right side. Except for being formed and assisting when the standing door 90 is opened, it is the same as that on the right in terms of configuration and operational effects.

  In this way, by providing the symmetrical slide assist device 10 ′ on the top of the standing door 90, it is possible to receive the slide assist by the slide assist device 10 ′ in both opening and closing operations of the standing door 90. It is.

  The effects of the slide assist device 10 ′ of the second embodiment are the same as those of the first embodiment. Particularly, in the slide assist device 10 ′ of the second embodiment, the standing door 90 is provided. The structure of the arrowhead piece 48 that is the side engaging member is simpler than the sliding door side engaging member including the slide block 45 and the hooking member 49 of the first embodiment. Can contribute to the reduction of

  As described above in detail, in the slide assist devices 10 and 10 ′ according to the present invention, the top nose members 20 and 20 ′ are loosely fitted in the guide groove 71 of the Kamoi 70 as a sliding door, and the lower edge portion. Is intended for a so-called standing door 90 supported by a guide groove 81 provided in the sill 80 so as to extend in the opening / closing direction, and assists the sliding operation of the standing door 90. Is for.

  Such slide assist devices 10, 10 ′ are provided with a head-side engagement member (the trigger 60 in the first embodiment, the engagement plate 60 ′ in the second embodiment) provided on the head 70, and the standing door 90. A nose side engaging member provided on the side of the nose member 20 that engages with the engaging plate 60 within a predetermined range within the moving range (a hooking member having a slide block 45 and a tongue piece 492 in the first embodiment) 49, in the second embodiment, the arrowhead piece 48), the head-side engagement member and the door-side engagement member are engaged with each other, and the biasing force is applied to the standing door 90 by the movement of the standing door 90. And a spring force transmission mechanism that functions to assist the movement of the standing door 90 using the accumulated urging force of the coil springs 50 and 50 '.

  According to the slide assist device 10, 10 ′ having such a configuration, when opening the closed standing door 90 or closing the opened standing door 90, the standing door 90 is a coil spring. Since the movement is assisted by the urging force of 50, 50 ', the moving operation for opening or closing the standing door 90 becomes light, the moving operation of the standing door 90 becomes easy, and the It is possible to prevent the opening and closing from occurring.

  The head-side engaging member is provided on the rear inner wall 72 side of the head groove 71 for the head of the head 70, and the door-side engaging member is a surface side facing the rear inner wall 72 of the door-side member 20. Therefore, it is possible to design the two doors so that they can be engaged regardless of the positional fluctuations in the vertical direction. As a result, the standing door 90 is a standing door that is not a suspension door. However, it is possible to reliably prevent the occurrence of inconvenience that the engagement between the engagement members on the side of the head 70 and the head member 20 is not engaged due to a dimensional error or an assembly error. As a result, the slide assist devices 10 and 10 'can function more reliably.

  In addition, since the slide assist devices 10 and 10 'include the nose members 20 and 20' as components, the slide assist devices 10 and 10 'according to the present invention are applied to the existing sliding doors. When applying so-called renovation processing, it is only necessary to replace the existing nose with the nose member 20, 20 'according to the present invention, and the present invention also relates to the renovation of the sliding door. The slide assist devices 10 and 10 'are excellent.

  The present invention is not limited to the above embodiment, and includes the following contents.

  (1) In the above embodiment, the rectangular tube 30 is formed by externally fitting the same second angle member 32 to the first angle member 31 having a U-shape in cross-sectional view. Instead of this, a square pipe integrated from the beginning may be adopted.

  (2) In the above embodiment, the sill guide groove 81 recessed in the sill 80 is employed as the guide part according to the present invention. However, in the present invention, the guide part is the sill guide groove 81. It is not particularly limited, and a rail on which a door cart is guided may be used. In this case, it is not necessary to provide a guide groove.

  (3) In the above-described embodiment, two slide assist devices 10 and 10 ′ are employed in one standing door 90, and slide assist is performed in both opening and closing operations of the standing door 90. However, the present invention is not limited to adopting the two slide assist devices 10 and 10 ′, and one slide assist device 10 or 10 ′ can be used to open and close the standing door 90. Assist may be performed.

  (4) In the first embodiment described above, the trigger 60 has the upper and lower bracket pieces 64, 65 protruding from the upper and lower sides of the engagement strip 66. Only one of them may be adopted. The same applies to the engagement plate 60 ′ of the second embodiment, and only one side of the left and right skirt portions 61 of the bulging portion 62 may be employed.

  (5) In the first embodiment described above, the vertical dimension of the engagement strip 66 of the trigger 60 which is the head-side engaging member is set to be the same as the vertical dimension of the front inner wall 73 of the head groove 71 for the head. By setting the relative positional relationship between the engagement strip 66 and the tongue piece 492 to be a predetermined one, the engagement range of both can be widened. Specific examples thereof include the following. In other words, the engaging strip 66 is provided at the lower end portion of the front inner wall 73 of the head guide groove 71, while the upper end portion of the tongue piece 492 may be set at the same height level as the upper surface of the rectangular tube body 30. In this way, even if the vertical dimension of the engagement strip 66 is shorter than the vertical dimension of the front inner wall 73 of the guide groove 71 for the head, the engagement range between the engagement strip 66 and the tongue piece 492 is maximized. Can do. In this case, the sum total of the vertical dimension of the head and sliding door engaging members according to the present invention is a value obtained by adding the vertical dimension of the tongue piece 492 to the groove depth of the guide groove 71 for the head.

  The same applies to the relationship between the engagement plate 60 ′ that is the head-side engagement member and the arrowhead body 481 of the arrowhead piece 48 that is the sliding door-side engagement member in the second embodiment.

  (6) In the first embodiment described above, the trigger 60 has the upper bracket piece 64 extended from the upper end of the engaging strip 66 fixed to the groove bottom of the Kamoi guide groove 71 and the lower end thereof. The lower bracket piece 65 extending from the section is fixed to the duck 70 by being fixed to the lower surface of the duck 70, but only one of the upper and lower bracket pieces 64, 65 is adopted and fixed to the duck 70. You may make it do.

  The same applies to the engagement plate 60 ′ of the second embodiment, and only one side of the pair of left and right skirts 61 is employed to fix the engagement plate 60 ′ to the duck 70. May be.

1 is a partially cutaway perspective view showing a standing door to which a first embodiment of a sliding door slide assist device according to the present invention is applied. It is a disassembled perspective view which shows the left side nose member which concerns on 1st Embodiment. FIG. 3 is an assembled perspective view of the nose member shown in FIG. 2, showing a state when the standing door is opened. In the circle, the relative positional relationship between the trigger and the tongue is shown. FIG. 3 is an assembled perspective view of the nose member shown in FIG. 2, showing a state in which the standing door is closed. In the circle, the relative positional relationship between the trigger and the tongue is shown. It is the VV sectional view taken on the line in the circle of FIG. It is a partial cross-sectional explanatory drawing of the planar view for demonstrating the effect | action of a slide assist apparatus, (A) is the slide assist apparatus by which the tongue piece was set to the engagement attitude | position by opening a standing door. The leftmost position, (B) is the state where the coil spring is being stretched by the closing operation of the standing door, and (C) is that the tongue of the hooking member is moved as the standing door is moved by a predetermined distance. A state of reaching the square hole and rotating clockwise around the pin, changing the posture to the release posture and immersing into the rectangular tube through the square hole, (D) shows the tongue piece set in the release posture Shows the state in which the standing door continues the locking operation while passing the trigger engagement strip and maintaining the biasing force of the coil spring. It is a partial cross-sectional explanatory drawing of the planar view for demonstrating the effect | action of a slide assist apparatus, (A) is the front right edge of the triangular block of a hook member by opening operation of the standing door once closed (B) is a state in which the tongue is pulled out of the square hole 34 and the posture changes from the engagement posture to the release posture 2, whereby the right corner of the tongue is engaged with the engagement strip. The state engaged with each is shown. It is a disassembled perspective view which shows the standing door to which 2nd Embodiment of the sliding assistance apparatus of the sliding door which concerns on this invention was applied. It is an assembly perspective view of the standing door shown in FIG. It is a disassembled perspective view which shows the slide assist apparatus provided in the standing door which concerns on 2nd Embodiment of this invention. FIG. 11 is an assembled perspective view of the slide assist device shown in FIG. 10. It is the XII-XII sectional view taken on the line of FIG. It is the XIII-XIII sectional view taken on the line of FIG. It is a disassembled perspective view which shows one Embodiment of a cylindrical member. FIG. 15 is a partially cut-out assembly perspective view of the cylindrical member of FIG. 14. It is the perspective view which looked at the slide assist device for explaining the projection state from the 1st angle material of the arrowhead piece of the arrowhead piece, and the positional relationship between the arrowhead body and the engagement plate, from the rear side, (A), The state where the standing door is closed, (B) shows the state where the standing door is being opened. It is sectional drawing of the planar view for demonstrating the effect | action of the sliding assist apparatus of a sliding door, (A) is the state in which the standing door 90 was closed, (B) is the state in which the standing door began to open. Each is shown. It is sectional drawing of planar view for demonstrating the effect | action of the sliding assist apparatus of a sliding door, (A) is the state in which the arrowhead main body of the arrowhead piece is engaging with the bulging part of an engagement plate, (B) is , The state where the standing door is opened is shown. It is sectional drawing of the planar view for demonstrating an effect | action of the slide assist apparatus of a sliding door, (A) is closing the standing door and the semicircle part of the arrowhead piece is engaged with the bulging part of an engagement plate. A state (B) which is being combined shows a state immediately before the standing door is closed.

Explanation of symbols

10, 10 'Slide assist device 20, 20' Nose member 21 Edge block 211 Cut groove 212 Through hole 213 Screw hole 22 Edge block 221 Block body 221a Screw hole 222 Projection block 222a Through hole 223 Pedestal block 223a Base 223b Leg part 23 Edge block 231 Circular hole 232 Y-shaped piece 233 Screw hole 234 Caulking hole 29 Forked piece 291 Mounting gap 292 Through hole 30 Square cylinder (frame)
31 Angle material 311 Vertical plate 312 Screw hole 314 Horizontal plate 315 Screw hole 32 Angle material 321 Vertical plate 322 Insertion hole 323 Horizontal plate 324 Insertion hole 33 Guide slit 34 Square hole 40 Cylindrical member 40 'Shock absorber 41, 41' Inner cylinder 411 Left plug member 412 Plug body 413, 416 First bracket 413a Through hole 414, 426 Second bracket 414a Locking hole 415 Vent hole 416a Insertion hole 42, 42 'Outer cylinder 421 Right plug member 422 Plug body 423 1st 3 Bracket 423a Locking hole 426a Insertion hole 43 Box 431 Left face plate 432 Rear face plate 433 Long hole 434 Top plate 434a Insertion hole 435 Bottom plate 435a Screw hole 44 Shaft screw (vertical shaft)
45 Slide block 451 Block base body 452 Shaft support plate 452a Caulking hole 453 Protruding piece (second locking portion) 454 Y-shaped piece 455 Circular hole 456 Caulking hole 46 Installation space 48 Arrowhead piece (spring neck side engaging member (spring force) Transmission mechanism))
481 Arrowhead body 482 Neck part 483 Semicircular part 484 Support hole 49 Hooking member 491 Triangle block 491a Insertion hole 491b Front right edge (second locking part)
492 Tongue piece (door-side engagement member (spring force transmission mechanism))
492a Right corner (first locking portion) 492b Inclined surface 50, 50 'Coil spring (pull spring)
51 Hook 55 Circular locking piece 60 Trigger (Kamoi engagement member (spring force transmission mechanism))
60 'engagement plate (Kamoi engagement member (spring force transmission mechanism))
61 Hem part 62 Swelling part 63 Screw hole 64 Upper bracket piece (flange part)
65 Lower bracket piece (flange)
66 Engagement strip (bulging part) 67 Through-hole 70 Kamoi 71 Guidance guide groove 72 Rear inner wall (groove wall) 73 Front inner wall (groove wall)
80 threshold 81 guide groove for threshold (guide part)
90 Standing door (sliding door) 91 Door body 92 Blindfold plate 93 Door car 931 Door car storage recess M Wood screw P Pin (vertical axis) S Screw d Maintenance gap

Claims (7)

In a sliding door slide assist device in which a sliding assist force is applied to a sliding door whose top portion is loosely fitted in the guide groove of the head and whose lower edge is supported by the guide portion of the sill in at least one of the opening direction and the closing direction. ,
A frame provided at the top of the sliding door, a pulling spring accommodated in a free state in one end of the frame, the pulling spring is extended when sliding in one direction of the sliding door, and when sliding in the opposite direction A spring force transmission mechanism that applies a biasing force of a tension spring as the slide assist force;
The spring force transmission mechanism includes a head-side engagement member provided in the guide groove of the head and the head-side engagement within a predetermined range within a moving range of the sliding door attached to the free end side of the pulling spring. A sliding door side engaging member that engages on the side of the member and the sliding door;
At least one of the head side and the sliding door side engaging member is set to a predetermined vertical width, and is a sliding door slide assist device.   The sliding door sliding assist according to claim 1, wherein the sum of the vertical dimensions of the mooring side and sliding door side engaging members is set to be substantially the same as or larger than the vertical dimension of the groove wall of the guide groove. apparatus.   The stagnation-side engaging member has a protruding part that protrudes from the groove wall of the guide groove to the sliding door side, and a flange part that extends from at least one of the upper and lower ends of the protruding part, The sliding assist device for a sliding door according to claim 1 or 2, wherein the flange portion is attached to a portion other than the groove wall in the headquarters.   The sliding door sliding assist according to any one of claims 1 to 3, wherein the sliding door side engaging member is set so that a lower edge portion thereof is positioned below an opening of the guide groove. apparatus.   One of the sliding doors is provided with a sliding assist force toward the opening direction, and the other is provided with a pair of sliding doors with respect to the sliding door so as to apply a sliding assist force toward the closing direction. The sliding assist device for sliding doors according to any one of claims 1 to 4. The frame body is provided with a guide slit for guiding the sliding door side engaging member in the sliding direction of the sliding door,
The sliding door-side engaging member is attached to the pulling spring so as to be rotatable about a vertical axis, and the first and second locking portions that are selectively locked to the head-side engaging member by this rotation. Provided,
When the sliding door is slid in one direction, the pulling spring is extended by the first locking portion being locked to the head-side engagement member, and the sliding door-side engagement member is an end portion of the guide slit. The first locking part is released from the head-side engagement member by rotating in a predetermined direction when reaching the end, and is held at the terminal end part of the guide slit,
At the time of sliding toward the other direction of the sliding door, the second locking portion is locked to the head-side engaging member, so that the sliding member is rotated in the opposite direction to release the pulling spring. The sliding assist device for a sliding door according to any one of claims 1 to 5, wherein an assisting force is applied to the sliding door by a force. The sliding assist device for a sliding door according to any one of claims 1 to 6, wherein the frame is configured as a part of a nose of a sliding door that is loosely fitted in the guide groove of the headquarters.

Images