JP3822196B2 - SELF-CLOSED SLIDE DOOR DEVICE, SELF-CLOSED SLIDE DOOR UNIT AND ASSEMBLY METHOD OF SELF-CLOSED SLIDE DOOR DEVICE - Google Patents

Description

  The present invention relates to a self-closing type sliding door device for automatically closing an opened sliding door, and in particular, a self-closing type sliding door capable of stopping a self-closing type sliding door at an arbitrary position during an opening operation. It relates to an intermediate stop device.

  In Patent Document 1, as a halfway stop device for this type of self-closing sliding door, a braking rail for stopping the sliding door is provided in addition to the traveling guide rail. Discloses a configuration in which an intermediate stop device is driven. The halfway stop device includes a main roller, a rotating friction body, a braking body, and a braking rail, and the rotating friction body receives the rotation moment of the main roller and is configured to get over the braking portion. ing. The braking body facing the main roller is switched by a switching device comprising a solenoid to invalidate the halfway stop function or return it to an effective state.

  However, the halfway stop device described in Patent Document 1 requires a plurality of rails such as a brake rail in addition to the guide rail, so that the scale of the device itself is greatly complicated. I can't deny it. In particular, the self-closing device and the halfway stop device are separated, which not only increases the manufacturing cost of the device, but also has a difficult problem that the installation work on the sliding door is complicated and lacks versatility. .

  Therefore, in Patent Document 2, the self-closing device and the halfway stop device are separate, but provided with a ring member that can mesh with a roller that rotates forward and reverse in conjunction with the opening / closing operation of the sliding door, There are provided pocket spaces provided at a plurality of locations on the inner peripheral surface of the ring member, and further provided with leaf springs and rollers that bulge toward the inner diameter side disposed in the pocket space. This halfway stop device allows the sliding door to be arbitrarily controlled by elastically restraining the roller that passes through the bulging top of the leaf spring with the leaf spring when the rotational motion of the roller is transmitted to the ring member and the ring member rotates. It stops at the position of.

  However, since the intermediate stop device of Patent Document 2 restrains the roller with a leaf spring, it is difficult to assemble the leaf spring so that the elastic force of the leaf spring is adapted to the opening / closing operation of the self-closing sliding door. In particular, if the shape and dimensions of the leaf spring cannot be accurately designed and assembled, the force to constrain the roller will be non-uniform. Skill was required.

  In addition, since the plate spring is deformed as a whole compared to the coil spring, the bulging top of the plate spring is deformed and the elastic force is reduced by repeating the operation of restraining the roller, and the service life of the intermediate stop device is shortened. Had.

JP 2002-227509 A JP 11-159221 A

  Accordingly, the present invention is provided in view of the above circumstances, and it is possible to integrate and increase the density by disposing an intermediate stop mechanism around the drive gear of the self-closing sliding door, and to prevent the intermediate stop force. The purpose is to facilitate the setting and to increase the service life.

  Next, an object of the present invention is to provide an intermediate stop mechanism around the drive gear inside the housing so as to be integrated and densified so that it can be embedded in the door body and can be retrofitted. It is what.

  Another object of the present invention is to provide an intermediate stop mechanism around the drive gear inside the housing to prevent the return of the self-closing force so that the door body can be easily assembled. It is.

In order to solve the above-mentioned problems, a self-closing type sliding door device according to the present invention comprises, as claimed in claim 1, a rack having a rack surface on a surface provided over a substantially middle portion in the length direction of the rail or the collar surface, A runner member provided on the end side of the main body and running on the rail and the saddle surface, and a gear surface provided at an intermediate portion of the door main body and engaging the rack surface are projected and a winding spring is attached to the runner member. A driving gear to which a closing force is applied and an intermediate stop mechanism for locking the driving of the drive gear are provided. The intermediate stop mechanism includes a tip portion provided with a guide member having a semicircular tip surface, and a plurality of guide gears . A rear end portion on which a spring is disposed. The tip end portion is pivotally supported by the rear end portion, and is urged by the spring. The semicircular tip end surface of the guide member is supported by the drive gear. this to made to contact the circumferential guide portion provided on the side surface The features.

  According to this configuration, a secret arrangement structure is obtained in which the gear surface of the drive gear is engaged with the rack surface, the sliding door is self-closed by the winding spring, and the intermediate stop mechanism is locked around the drive gear. When the opening operation is performed against the self-closing force and the operation is stopped halfway, a self-closing force is generated, the guide member is moved to the intermediate stop position, and the intermediate stop is maintained.

Next, a self-closing type sliding door unit according to the present invention has, as claim 2, protruding a gear surface that engages with a rack surface provided substantially over the middle part of the rail or the longitudinal direction of the rail and a winding surface. A drive gear to which a self-closing force is applied by mounting a spring, a midway stop mechanism for locking the drive of the drive gear, and a housing configured to be embedded in the intermediate portion of the end surface of the door body by mounting them inside The halfway stop mechanism has a front end portion provided with a guide member having a semicircular front end surface and a rear end portion provided with a plurality of springs, and the front end portion is disposed on the rear end portion. The guide member is pivotably supported, and is biased by the spring so that a semicircular tip end surface of the guide member comes into contact with a circumferential guide portion provided on a side surface of the drive gear .

  According to this configuration, the self-closing force is exhibited by embedding the housing in the digging hole of the door main body, and at the same time, the door main body is opened and the midway stop position is held. In particular, these housings can be retrofitted and a self-closing structure can be added.

  According to a third aspect of the present invention, there is provided a self-closing sliding door unit that projects a gear surface that engages with a rack surface provided on a rail or a saddle surface, and is provided with a self-closing force with a winding spring attached thereto. Drive gear, a midway stop mechanism that locks the drive of the drive gear, a housing that can be mounted inside and embedded in an end surface intermediate portion of the door body, and a gear surface that protrudes from the housing. And a return blocking means that is detachably mounted from a side surface of the housing and blocks the return of the self-closing force.

  According to this configuration, in addition to the operation of the second aspect, in addition to being assembled in an adjustment position where the gear surface does not rotate according to the winding spring force, the return prevention means is removed from the front surface of the door body which is the side surface of the housing. Is done.

  According to a fourth aspect of the present invention, in the self-closing type sliding door unit according to the third aspect, the return prevention means is a fork member that engages with a groove on the gear surface from the outer surface of the housing.

  According to this configuration, the return of the gear by the winding spring is prevented by using the groove on the gear surface without requiring a special structure, and the gear spring is detached from the outer surface of the housing after being assembled in the adjusted position. An arbitrary position of the groove on the gear surface is selected to prevent return.

  Further, according to a fifth aspect of the present invention, there is provided the self-closing sliding door unit according to the third aspect, wherein the return blocking means has a plurality of holes perforated in the circumferential direction below the side surface of the gear surface of the drive gear, and is engaged with the holes. And a pin-shaped pin member.

  According to this configuration, the pin member is engaged from the side surface into the lower hole portion of the gear surface to prevent the return of the gear by the winding spring, and after being assembled in the adjusted position, from the side surface that is the outer surface of the housing It is possible to remove the pin member. A number of rear portions are selected to engage the pin member.

  Further, according to a sixth aspect of the present invention, in the self-closing sliding door unit according to the fifth aspect, the pin member has a substantially L shape from the engaging portion and the gripping portion, and the tape member is attached to the gripping portion. It is characterized by being.

  According to this configuration, when the engaging portion is engaged in the hole, the gripping portion is exposed on the side surface of the gear surface, and the gripping portion is identified by the tape member, and the tape portion is The engaging portion is pulled out from the hole by gripping.

Furthermore, the method for assembling the self-closing sliding door device according to the present invention is as claimed in claim 7 , in which a rail is provided on the upper part, and the rail runs on the end side of the upper end surface of the door body. In an upwardly suspended sliding door device provided with a runner member, a rack sheet having a rack surface is fixed to substantially the middle portion of the lower surface of the rail running surface in the longitudinal direction, and the middle of the upper end surface of the door body is fixed. A drive gear provided with a digging hole in the part, protruding a gear surface that engages with the rack surface and having a self-closing force attached by a winding spring, and an intermediate stop mechanism that locks the drive of the drive gear And a housing in which these are mounted are embedded in the digging hole, and the gear surface protruding from the upper end surface of the housing and the door main body is engaged with the rack surface of the rack sheet, and then protruding from the housing. The gear face to the housing Wherein the withdrawal of the return preventing means mounted externally from the side surface of the door body.

  According to this structure, it becomes possible to change to a self-closing type with a halfway stop mechanism by retrofitting an existing top-hanging type sliding door device by attaching a rack sheet and embedding a self-closing type sliding door unit. Specifically, the work of fixing the lower surface of the rack sheet to the rail running surface, the work of providing a dug hole in the intermediate part of the door body, the work of embedding the self-closing type sliding door unit in the dug hole, The post-attachment is realized by pulling out the return prevention means from the front surface which is the side surface of the door main body after the door main body is assembled to the door.

According to claim 1 of the present invention, the gear surface of the driving gear to the rack surface not own closed the sliding door by the engage winding spring, during the developing around the drive gear by engaging the stop mechanism self-closing sliding door In addition, an integrated structure in which the intermediate stop mechanism is closely arranged can be obtained. As a result, it can be easily retrofitted to existing sliding doors. In this case, when the opening operation is stopped against the self-closing force and stopped halfway, the self-closing force is generated and the stopper is automatically engaged with the gear surface, and at the same time, the cam is guided to the lock position. The stop position on the way can be reliably maintained.

  Next, according to the second aspect of the present invention, an intermediate stop mechanism is engaged around the drive gear equipped with the winding spring, thereby utilizing the empty space so that the housing is tightly packed inside the housing. It is possible to provide a unit structure in which a housing having a halfway stop mechanism can be embedded in the door body. Therefore, it can embed in the embedding hole of the door main body, and can perform a front attachment or retrofit easily.

  Next, according to the third aspect of the present invention, in addition to the effect of the second aspect, the gear surface can be assembled in an adjustment position where the gear surface does not rotate in accordance with the winding spring force. In particular, in a self-closing type sliding door device using a driving gear equipped with a conventional winding spring, the driving gear is driven back according to the winding spring force and the assembly adjustment position of the gear surface is misaligned. However, these drawbacks can be eliminated. In addition, since the return prevention means can be removed from the front of the door body, which is the side of the housing, the return prevention means is easily detachably operated from the front of the door body after the door body is assembled to the sliding door device. It is possible to reduce the assembly work.

  Further, when the return blocking means is a fork member, it is possible to prevent the return of the gear by the winding spring only by engaging from the outer surface of the housing using the groove of the gear surface without requiring a special structure. It can be easily removed from the front surface of the door body, which is the outer surface of the housing, after being assembled to the sliding door device in the adjusted position.

  Furthermore, when the return blocking means is a hole on the gear face and a pin member, the return of the gear by the winding spring can be reliably blocked by engaging the pin member in the hole, and the sliding door remains in the adjusted position. The pin member can be removed from the front surface of the door body, which is the outer surface of the housing, after being assembled to the apparatus.

  Further, in addition to the effect of the fifth aspect, the grip portion and the tape member can be exposed from the side surface of the gear surface to facilitate the identification of the return blocking state, and the tape portion is gripped and engaged. The part can be reliably extracted from the hole.

  Furthermore, according to claim 7 of the present invention, it is possible to carry out the retrofitting work of the fixing of the rack sheet and the embedding of the unit for the self-closing type sliding door to the existing hanging type sliding door device, and the self-closing type with an intermediate stop mechanism Can be changed. In particular, the work of fixing the lower surface of the rack sheet to the rail running surface, the work of providing a dug hole in the middle part of the door body, the work of embedding a self-closing type sliding door unit in the dug hole, Retrofit can be realized very easily by the work of pulling out the return prevention means from the front surface which is the side surface of the door main body after the door main body is built in the door.

Hereinafter, the present invention will be described in detail by embodiments.
1 to 9 show an embodiment (1) of the present invention. As a self-closing type sliding door device 1, an upper hanging type rail 11 is disposed in an opening 13 of a wall surface 12, and a door is provided on the rail 11. An example in which the main body 10 is provided so as to be freely opened and closed is illustrated. The self-closing type sliding door device 1 includes a rack 14 having a rack surface 140 on the surface thereof and provided on a substantially intermediate portion in the length direction of the rail 11, and the rail 11 provided on the end side of the door body 10. A runner member 15 that travels, and a drive gear 2 that is provided at an intermediate portion of the door body 10 and that projects from a gear surface 20 that engages with the rack surface 140 and that is provided with a self-closing force with a winding spring 23 attached thereto; An intermediate stop mechanism 3 that engages with the gear surface 20 of the drive gear 2 to lock the drive of the drive gear 2 is provided. The midway stop mechanism 3 is pivotally supported at a substantially intermediate portion of the base portion 30 so as to be swingable, and a plurality of springs 33 and 34 are disposed in the rear end portion 31 so as to be spaced apart from each other in the circumferential direction. A guide member 35 that prevents the gear surface from rotating is provided at the front end portion 32 of the shaft 30 and is generally configured.

  The drive gear 2 and the halfway stop mechanism 3 are mounted inside the housing 4. The housing 4 has a width dimension that can be embedded in the dug hole 101 on the end face of the door body 10 and can be formed in a narrow rectangular shape as shown. In the figure, 41 is a collar part and 42 is a set screw hole.

  As shown in FIGS. 3 to 5, the drive gear 2 includes a circumferential guide portion 24 that extends to the rear side surface and a circumferential flange 25 that projects from the rear end of the circumferential guide portion 24 to a large diameter. These are integrally formed as necessary, and an adjustment screw 27 is attached to the central hole 26 in the central portion. The circumferential guide portion 24 has a smaller diameter than the tooth groove 22 of the drive gear 2 and is formed in a groove shape in which the outer peripheral surface is surrounded on the circumference between the rear side surface of the drive gear 2 and the circumferential flange 25. The The circumferential guide portion 24 is provided with a selection 240 or the like on the outer peripheral surface thereof to obtain a friction with a guide member 35 described later. Further, the circumferential flange 25 is formed with a slightly smaller diameter than the tooth groove 22 of the drive gear 2. Further, the drive gear 2 is provided with a disc-shaped storage portion 28 up to the inside of the circumferential guide portion 24, and a winding spring 23 is attached to the storage portion 28. The winding spring 23 is accommodated in an adjustable manner by engaging the outer end 230 with the protrusion 280 of the accommodating portion 28 and engaging the inner end 231 into the split groove 270 of the adjusting screw 27.

  The adjustment screw 27 of the drive gear 2 has shaft portions 271 and 272 having small diameters at both ends in the axial direction, and the split groove 270 is extended to the shaft portion 271 on the distal end surface side to constitute a driver engagement groove. Yes. An overhang portion 273 that prevents the screw from coming off is provided in front of the shaft portion 272 at the rear end of the adjustment screw 27 to prevent friction with the rear end surface of the housing 4.

  A reduction mechanism 29 is added to the drive gear 2. The speed reduction mechanism 29 is combined with a speed reduction gear 290 and a speed reduction damper 292 and is axially supported by the housing 4. The return force of the winding spring 23 is reduced by engaging the gear surface 291 of the speed reduction gear 290 with the gear surface 20 of the drive gear 2. To be. The speed reduction mechanism 29 is assembled and arranged on the outer peripheral side of the drive gear 2 and is separated from the intermediate stop mechanism 3 to effectively use the space in the housing 4. Further, in the drive gear 2, the gear surface 2 protrudes from the upper opening 40 of the housing 4 over several pitches, and can mesh with the rack surface 140.

  Next, as shown in FIGS. 2, 3, and 5 to 7, the midway stop mechanism 3 can assemble the front end portion 32 and the rear end portion 31 from separate members. The tip portion 32 in this case has a substantially inverted T shape as a whole, and a guide member 35 guided by the circumferential guide portion 24 projects from the tip surface. The guide member 35 is a thin circle that can be engaged with a groove shape surrounded on the circumference between the rear side surface of the drive gear 2 and the circumferential flange 25, and the tip surface can be switched to a semicircular shape on the outer circumferential surface. It is formed into a shape. The tip portion 32 is pivotally supported at the center of the lower end thereof, and is provided with a spring receiving seat surface 320 having a lower surface extending in the circumferential direction. The spring receiving seat surface 320 is configured to perform spring compression of the plurality of springs 33 and 34. It is structured to receive extension.

  In addition, the rear end portion 31 of the midway stop mechanism 3 is provided with a plurality of holes 310 and 311 spaced apart in the circumferential direction, and springs 33 and 34 are inserted into the holes 310 and 311 respectively. Yes. The rear end portion 31 is fixed to the housing 4 with screws 312 as necessary.

  Further, the return preventing means 5 can be detachably mounted on the gear surface 20 protruding from the opening 40 of the housing 4. As shown in FIG. 8, a fork member 50 is provided as the return prevention means 5. The fork member 50 is composed of a pair of engaging pieces 51, 51 in the form of a fork, and a marking portion 52 that bends the tip portion downward. Therefore, when the engaging pieces 51 and 51 of the fork member 50 are pushed in along the tooth grooves 22 and 22 of the gear surface 20 from the side surface of the housing 4, the return force is engaged along the tooth grooves 22 and 22. Be blocked. The sign section 52 displays a description that it should be removed after installation. Further, the engaging pieces 51 and 51 are provided with protrusions 51 a and are engaged with the side portions of the upper opening 40 of the housing 4 to lock the engaging pieces 51 and 51.

According to this embodiment (1), the rack 14 is constructed by adhering the rack sheet having the rack surface 140 to the running surface of the rail 11 over substantially the middle portion of the lower surface with adhesive or the like. .
Next, the housing is embedded in a substantially central dug hole 101 in the length direction of the upper end surface of the door body 10, and is fixed with a set screw 43 from the set screw hole 42 of the flange 41. A fork member 50 is mounted on the gear surface 20 of the drive gear 2 and is prevented from returning by the fork member 50 from the time of shipment to the time of attachment, and the position adjustment is maintained. At the time of installation, the runner member 15 is inserted into the rail 11 and simultaneously the gear surface 20 is engaged with the rack surface 140 of the rack 14, and then the fork member 50 is pulled out from the front upper end of the door body 10. As shown in FIG. 1, a tool such as a screwdriver is inserted into the split groove 270 of the adjustment screw 27 in accordance with the self-closing state of the door body 10 to adjust the strength and the gear position.

  As shown in FIG. 6, the self-closing sliding door device 1 is self-closed by the spring force of the winding spring 23 from the open position to the closed position. The guide member 35 swings downward in the drawing according to the circumferential guide portion 24 by the clockwise rotation of the drive gear 2, and the guide surface 350 slides on the circumferential guide portion 24. In this case, the lower spring 34 is compressed by the approach of the receiving seat surface 320, and the upper spring 33 is extended by the separation of the receiving seat surface 320, so that the guide surface 350 is circumferentially resisted against the self-closing force. It is in contact with the guide part 24.

  As shown in FIG. 7, the case where the door body 10 is opened from the closed position to the open position against the self-closing force will be described. The guide member 35 swings upward in the drawing according to the circumferential guide portion 24 by the counterclockwise rotation of the drive gear 2 accompanying the opening operation, and the guide surface 350 slides on the circumferential guide portion 24. ing. In this case, the lower spring 34 is extended by the separation of the receiving seat surface 320, and the upper spring 33 is compressed by the approach of the receiving seat surface 320.

  Next, as shown in FIG. 2, a case will be described in which the door main body 10 is operated to open from the closed position to the open position against the self-closing force and stopped halfway. When stopped halfway, the spring force of the winding spring 23 is exerted, but the guide surface 350 of the tip portion 32 abuts on the circumferential guide portion 24 and is positioned based on the uniform compression force of the plurality of springs 33, 34. The stop position on the way is held.

  FIG. 10 shows an embodiment (2) of the present invention. The return blocking means 5 includes a hole 53 that is perforated in the circumferential direction below the side surface of the gear surface 20 of the drive gear 2 and a pin-shaped pin member 54 that is engaged with the hole 53. The pin member 54 can be formed of a pin-like engaging portion 55 and a gripping portion 56 formed by bending the pin-like engaging portion 55 by approximately 90 °, and a tape member 57 is attached to the gripping portion 56.

  The pin member 54 is engaged with the hole 53 to prevent the drive gear 2 from returning, and the holding portion 56 and the tape member 57 can identify whether a small pin is engaged or not. The member 57 can be easily grasped and pulled out.

  In the embodiments (1) and (2), the description has been made on the assumption that the rail 11 is used. However, the wreck sheet 14 is fixed to the adjacent surface of the groove surface of the upper collar, and the drive gear 2 of the door body 10 is engaged to be built. It is possible to attach. In addition, the same application to the lower arm and the lower rail is not hindered.

  Furthermore, although the halfway stop mechanism 3 has been illustrated and described, it is also possible to employ a structure in which the base portion 30 is a cylindrical integrated structure, one spring is mounted therein, and the lower end portion is pivotally attached. In this case, it is desirable to bias an arbitrary portion of the base portion 30 by a spring member that swings and guides.

It is the whole perspective view and principal part expansion perspective view which show Embodiment (1) which concerns on this invention. It is the front view and principal part enlarged view of Embodiment (1) which concern on this invention, and is the figure which removed the front cover of the housing. It is a disassembled perspective view in the unit for self-closing type sliding doors of Embodiment (1) which concerns on this invention. It is sectional drawing of the drive gear of Embodiment (1) which concerns on this invention. It is a top view of the unit for self-closing type sliding doors of Embodiment (1) which concerns on this invention, and a right half is sectional drawing. It is operation | movement explanatory drawing of the halfway stop mechanism of Embodiment (1) based on this invention. It is operation | movement explanatory drawing of the halfway stop mechanism of Embodiment (1) based on this invention. It is a perspective view which shows erection of the self-closing type sliding door unit of Embodiment (1) which concerns on this invention. It is a perspective view which shows removal of a return prevention means after building in the self-closing type sliding door unit of Embodiment (1) which concerns on this invention. It is a perspective view which shows removal of a return prevention means after building in the self-closing type sliding door unit of Embodiment (2) which concerns on this invention.

Explanation of symbols

Self-closing sliding door device 1
Rail 11
Rack 14
Rack surface 140
Door body 10
Runner member 15
Drive gear 2
Gear surface 20
Winding spring 23
Stop mechanism 3
Base part 30
Rear end 31
Tip 32
Spring 33, 34
Guide member 35
Housing 4
Return prevention means 5
Fork member 51
Hole 53
Pin member 54
Tape member 57

Claims (7)

A rack having a rack surface on the surface provided substantially over the middle of the rail or the surface in the length direction, a runner member provided on the end side of the door body and running on the rail or the surface, A drive gear provided at an intermediate portion of the door main body and protruding from a gear surface engaged with the rack surface and provided with a self-closing force by being mounted with a winding spring; and an intermediate stop mechanism for locking the drive of the drive gear; The halfway stop mechanism has a front end portion provided with a guide member having a semicircular front end surface and a rear end portion provided with a plurality of springs, and the front end portion is disposed on the rear end portion. The pivot member is pivotally supported, and is biased by the spring so that the semicircular tip surface of the guide member comes into contact with a circumferential guide provided on a side surface of the drive gear. Closed sliding door device. A drive gear that projects a gear surface that engages with a rack surface provided substantially over the middle of the rail or the longitudinal direction of the rail surface and that is provided with a self-closing force by being mounted with a winding spring; An intermediate stop mechanism that locks the drive of the door, and a housing that can be embedded in an intermediate portion of the end surface of the door main body, and the intermediate stop mechanism includes a guide member having a semicircular tip surface And a rear end portion on which a plurality of springs are arranged. The front end portion is pivotally supported by the rear end portion and is urged by the spring to be half of the guide member. A self-closing type sliding door unit characterized in that a circular front end surface is brought into contact with a circumferential guide provided on a side surface of the drive gear .   A drive gear that protrudes from a gear surface that engages a rack surface provided on the rail or the flange surface and that is provided with a self-closing force by being mounted with a winding spring; and an intermediate stop mechanism that locks the drive of the drive gear; The housing is configured so that it can be embedded in the middle of the end surface of the door body, and the gear surface protruding from the housing is detachably mounted from the side surface of the housing to prevent the return of the self-closing force. A self-closing type sliding door unit comprising return prevention means.   4. The self-closing sliding door unit according to claim 3, wherein the return preventing means is a fork member that engages with a groove on the gear surface from the outer surface of the housing.   4. The self-closing type sliding door unit according to claim 3, wherein the return blocking means has a plurality of holes formed in the circumferential direction below the side surface of the gear surface of the drive gear, and a pin-shaped pin member engaged with the holes. A unit for self-closing sliding doors, characterized by comprising: 6. The self-closing sliding door unit according to claim 5, wherein the pin member has an approximately L shape from the engaging portion and the grip portion, and a tape member is attached to the grip portion. Closed sliding door unit. In the upper suspension type sliding door device in which a rail is provided at the upper part and a runner member that runs on the running surface of the rail is provided on the end side of the upper end surface of the door body
A rack sheet having a rack surface is fixed over substantially the middle portion of the lower surface of the rail running surface, and a dug hole is provided in an intermediate portion of the upper end surface of the door body.
A drive gear that protrudes from the gear surface that engages with the rack surface and is provided with a self-closing force by being mounted with a winding spring, a halfway stop mechanism that locks the drive of the drive gear, and a housing in which these are mounted Embedded in the above digging hole,
After the gear surface protruding from the upper end surface of the housing and the door body and the rack surface of the rack sheet are engaged, a return prevention means mounted on the gear surface protruding from the housing from the outside of the housing is provided on the side surface of the door body. A method for assembling a self-closing type sliding door device, wherein the sliding door device is pulled out from the door.

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