INTEGRATED DOOR LOCKING OF A SLIDING DOOR

Abstract

An integrated door locking assembly which is arrangeable on a sliding door (2) which is slidably mounted on a side surface of a vehicle (1) to maintain an open state or a closed state of the sliding door (2), the integrated door locking assembly comprising: a plate (12) attached to the lower front side of the sliding door (2); a front locking member mounted in the front side of the plate (12), the front locking member being configured to maintain the closed state of the sliding door (2) by restricting a closing stopper (51) formed on a vehicle body when the sliding door (2) is closed, and releasing the restriction of the closing stopper (51) when the sliding door (2) starts to open; and a keep-open locking part attached to the plate (12) and spaced from the front locking part towards a rear of the vehicle (1), the keep-open locking part being configured to maintain the open state by restricting the sliding of the sliding door (2) when the sliding door (2) is open and releasing the restriction so that sliding of the sliding door (2) is permitted when the sliding door (2) starts to close.

Description

TECHNICAL FIELDThe present invention relates to a door latch assembly mounted on a sliding door of a vehicle.BACKGROUNDThere are several types of doors that allow passengers to enter or exit the interior of a vehicle.As illustrated in FIG. 1, in a vehicle 1 such as a van or the like, a slide door 2 is mounted to be opened and closed along the vehicle side.A front latch 111 and a rear latch 113 for closing the slide door 2 are mounted on the front and rear ends of the slide door 2, respectively. The front latch 111 and the rear latch 113 are kept closed with the door closed, and cause the front and rear ends of the slide door 2 to engage with the vehicle body of the vehicle 1, thereby complying with the strength regulations for the part in which the slide door 2 is installed in the event of a side collision.In order to keep the sliding door 2 open at its front, a keep-open latch 112 is also attached to the front end of the sliding door 2. When the sliding door 2 is fully opened, the hold-open latch 112 holds the sliding door 2 open so that the occupant can easily get in and out.Meanwhile, the front latch 111, the rear latch 113, and the hold-open latch 112 are connected to a remote controller 114 via cables, respectively, which are operated when an inside handle and an outside handle are operated inside and outside the sliding door 2, respectively. When the inside handle or the outside handle is operated, the cable is pulled by the remote controller 114 to activate the front latch 111, the rear latch 113, and the hold open latch 112.However, the conventional door latch has a problem that by mounting the weights of the front latch 111, the rear latch 113 and the hold-open latch 112 on the slide door 2, the weight thereof is increased. Moreover, the attachment of the front lock 111 makes it difficult to mount the bezel of the slide door 2 and fix the arrangement of glass to the slide door 2.From DE 20 2005 006 942 U1 and KR 10 2003 0 083 203 A integrated door locking arrangements are known which are arrangeable on a sliding door which is mounted displaceably on a side surface of a vehicle in order to maintain an open state or a closed state of the sliding door, wherein the integrated door locking arrangement comprises a plate mounted on the lower front side of the sliding door and a front locking part mounted in the front side of the plate, wherein the front locking part is configured to maintain the closed state of the sliding door by restricting a closing stop formed on a vehicle body when the sliding door is closed, and the restriction of the closing stop is released when the sliding door starts to open and comprises an hold-open locking part configured to maintain the open state.The foregoing is merely for understanding the background of the present invention and is not intended to mean that the present invention belongs to the related art in this technical field already known to those skilled in the art.OVERVIEWIt is an object of the present invention to provide an integrated door latch assembly of a sliding door in which a front latch member maintaining a closed state of a door and a hold open latch maintaining an open state of the door are integrally formed.The object is achieved by an integrated door locking arrangement having the features of claim 1.The embodiments of the present invention can solve the above problems and provide an integrated door latch assembly of a sliding door capable of reducing the number of latches disposed on the sliding door and satisfying the function of maintaining the closed or open state of the sliding door by the integration of a front latch and a hold-open latch in a sliding door of a vehicle.An integrated door latch assembly of a sliding door according to the embodiments of the present invention, which is disposed on a sliding door which is slidably disposed on the side surface of a vehicle to maintain the opening state or closing state of the sliding door, may include a panel attached to the lower front side of the sliding door. A front lock member installed in the front side of the panel maintains the closed state of the slide door by inhibiting a closing stopper formed on a vehicle body when the slide door is closed and cancelling the limitation of the closing stopper when the slide door starts to open. A hold open latch attached to the panel so as to be spaced from the front latch toward the rear of the vehicle maintains the open state by inhibiting the sliding of the sliding door upon opening the sliding door and releasing the restriction when the sliding door starts closing, so that the sliding of the sliding door is possible.The panel may be attached to the lower part of the sliding door and attached to the upper side parallel to the floor on a lower bracket shaped to be bent from the sliding door and parallel to the floor.A cut-out groove can be formed on the plate, through which the closing stop enters and exits.The front locking part may include a closing lever that is attached to the plate to be rotated when a closing cable is pulled by operation of the passenger; and a closing pawl that is formed with a U-shaped cut-out groove into which the closing stopper can enter and exit and that is rotatably attached to the plate. A closing rod rotates the closing pawl when the closing lever is rotated so that the cut-out groove of the closing pawl and the cut-out groove of the plate are aligned with each other.The closing lever can be mounted elastically opposite to the direction in which it is rotated when the closing cable is actuated. The closing pawl may be elastically supported in a direction in which the cut-out groove formed on the plate and the cut-out groove formed on the closing pawl are aligned. The closing rod may be elastically supported in a direction that blocks the rotation of the closing pawl.The hold open lock part may include a hold open cam attached thereto and rotated when a hold open cable is pulled to close the opened slide door. A keep open pawl is mounted to be rotatable on the panel and to keep a lower roller of the sliding door when the sliding door is opened. A keep open rod holds the keep open pawl when the sliding door is opened so that the keep open pawl maintains the retaining state of the lower roller, and releases the retaining state of the keep open pawl when the sliding door starts closing and the keep open cam rotates.The keep open rod may include a protrusion pin formed on a side of the keep open rod to contact a cam profile formed on the keep open cam, and a stopper protrusion that inhibits a side of the keep open pawl and releases the inhibition of the keep open pawl when the keep open rod rotates.The keep-open pawl may have a stopper formed thereon protruding in the circumferential direction thereof, the stopper protrusion may inhibit the rotation of the keep-open pawl when coupled to a stepped jaw formed between the end portion of the stopper and the keep-open pawl, and the inhibition of the keep-open pawl may be released when the stopper protrusion is separated from the stepped jaw.The hold-open cam may be elastically supported opposite to the direction in which it rotates when the hold-open cable is pulled, the hold-open rod may be elastically supported to closely contact the hold-open cam, and the hold-open pawl may be elastically supported in a direction in which the lower roller is spaced apart from the vehicle body.According to the door lock integrated structure of the sliding door having the above-described configurations according to the present invention, by reducing the number of locks on the sliding door to two, the weight of the number of door locks is reduced, which reduces weight and cost.In addition, since the door latch is not attached to the front latch portion of the slide door, the degree of freedom of the arrangement of the slide door is increased, and the mounting performance in attaching the door glass to the slide door can be improved.BRIEF DESCRIPTION OF THE DRAWING FIGURESThe above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawing figures, in which: FIG. 1 is a side view showing a state in which a slide door is mounted on a transporter; FIG. 2 is a side view showing a state in which a front latch, a rear latch, and a hold-open latch are conventionally mounted on a sliding door; FIG. 3 is a side view showing a door lock-integrated sliding door as a sliding door according to the present invention; FIG. 4 is a plan view showing an integrated door lock assembly of a sliding door according to the present invention at the time of door closing; FIG. 5 is a plan view showing an integrated door lock assembly of a sliding door according to the present invention at the time of door opening; FIG. 6 is a perspective view showing an operating state of the door latch integrated of the sliding door according to the present invention when the door is opened from its closed state; FIG. 7 is a perspective view showing an operating state of the door lock integrated assembly of the sliding door according to the present invention when the door is closed from its opened state; and FIG. 8 is a plan view illustrating the operative relationship between the hold-open cam and the hold-open rod in an integrated door latch assembly of a sliding door according to the present invention.DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTSFor a better understanding of the present invention, preferred exemplary embodiments thereof will be explained with reference to the accompanying drawing figures. Exemplary embodiments of the present invention may be changed in various forms, and the scope of the present invention should not be construed as being limited to the exemplary embodiments listed below. The present exemplary embodiments are provided to further bring the present invention to those skilled in the art. Thus, the appearance and the like of an element in a drawing may be exaggerated to emphasize a more clear description. It should be noted that like components are denoted by like reference numerals in each drawing figure. Detailed descriptions of well-known features and configurations that might unnecessarily obscure the gist of the present invention will be omitted.An integrated door lock structure of a sliding door disposed on a sliding door 2 slidably mounted on the side surface of a vehicle 1 according to the present invention to maintain the opening or closing state of the sliding door 2 may include a panel 12 mounted on the lower front side of the sliding door 2; a front lock member mounted in the front side of the panel 12 maintaining the closed state of the sliding door 2 by retaining a closing stopper 51 formed on a vehicle body when the sliding door 2 is closed and releasing the restriction of the closing stopper 51 when the sliding door 2 starts to open; and a hold open latch part mounted on the panel 12 so as to be spaced from the front latch part toward the rear of the vehicle, maintains the open state by retaining the slide of the slide door 2 upon opening of the slide door 2 and releasing the restriction so that the slide of the slide door 2 is possible when the slide door 2 starts closing.The panel 12 may be attached to a lower bracket 11 fixed to the sliding door 2. The lower bracket 11 may be disposed at the lower part of the sliding door 2 and bent parallel to the floor. The plate 12 may be attached to the bent surface of the lower bracket 11, i.e., the bent surface of the lower bracket 11 parallel to the ground, more specifically, the top surface of the bent surface. The present disclosure contemplates that the front locking part that keeps the sliding door 2 closed when closed and the hold-open locking part that keeps the sliding door 2 open are arranged together on the panel 12. The front locking part and the hold-open locking part are attached to the panel 12, so that the number of locks attached to the sliding door 2 can be reduced, thereby reducing the space and weight. The plate 12 may be partially cut to form a cut-out groove to allow the closing stopper 51 to enter or exit.Above the plate 12, a bracket 13 is provided which supports the rotation axis of the locking pawl 24, the rotation axes of the holding open cam 32 and the holding open pawl 34, and a locking cable 21 and a holding open cable 31 are fixed thereto.The front lock member holds the closing stopper 51 formed on the vehicle body when the slide door 2 is closed so that the slide door 2 maintains the closed state, and cancels the restriction of the closing stopper 51 when the slide door 2 starts to open. The front locking part may be attached to the front side of the panel 12 near the front end of the sliding door 2, and the hold-open locking part may be attached at a distance from the front locking part and positioned at the rear of the vehicle 1 (right side of FIG. 4 ). Since the front locking member retains or releases the closing stopper 51 attached to the vehicle body and the lower roller guide slide of the sliding door 2 is attached to the sliding door 2, the front locking member is attached in front of the hold-open locking member. The front locking part and the hold-open locking part are attached to a plate 12, which makes it possible to reduce the weight as compared with a configuration in which the front locking part 111 and the hold-open locking part 112 are separately provided in the conventional technique. The conventional technique includes a front latch 111, a hold-open latch 112, and a rear latch 113, however, in the present invention, the front latch portion and the hold-open latch portion are attached to a panel 12, thereby reducing the weight. Moreover, the degree of freedom in attaching the glass to the sliding door 2 is improved, and accordingly, the assembling performance is improved.The front locking part may be composed of a closing cable 21 that transmits the operation signal of the occupant, a closing lever 22 rotated by the closing cable 21, a closing pawl 24 that grasps the closing stopper 51, and a closing pawl 24 that operates the closing pawl 24 when the closing lever 22 is rotated.The closing cable 21 may be configured such that a wire is mounted inside the pipe so as to be pulled when the operation for opening the sliding door 2 is performed by the passenger.The locking lever 22 is rotatably disposed at one end on the plate 12 and the other end may be connected to the locking cable 21. In addition, the one end of the closing lever 22 can be placed in an elastically supported state by an elastic member returning the closing lever 22 to its original position, so that by pulling the closing cable in the opposite direction, the closing lever 22 can be rotated in the opposite direction. That is, the locking lever 22 rotates clockwise (based on FIG. 4 ) when pulled by the locking cable 21 and counterclockwise (based on FIG. 4 ) by the elastic member when the locking cable 21 has been operated.The closing pawl 24 may be mounted to be rotatable on the plate 12. In order to limit the slide stopper 51 formed in the vehicle body when the slide door 2 is closed, the closing pawl 24 has a cut-out groove into and from which the closing stopper 51 moves in or out, and the closing pawl 24 may be formed in a U-shape. On the other hand, the plate 12 may also have a cut-out groove for the entry and exit of the closing stop 51 so that the closing stop 51 can enter and exit. When the closing pawl 24 is rotated and the directions of the cut-out groove formed in the closing pawl 24 and the cut-out groove formed in the plate 12 coincide with each other, the closing stopper 51 can enter and exit, so that the inhibition of the closing stopper 51 is released. On the other hand, if the directions of the cut-out groove formed in the closing pawl 24 and the cut-out groove formed in the panel 12 do not match, the closing stopper 51 cannot enter and exit, thereby keeping the sliding door 2 closed.The closing pawl 24 is elastically supported on the plate 12 by an elastic member such as a torsion spring, so that the closing pawl 24 is elastically supported in the direction in which the cut-out groove formed in the closing pawl 24 and the cut-out groove formed in the plate 12 are aligned with each other. However, when the slide door 2 is closed, the closing pawl 24 is operated such that the directions of the cut-out groove formed in the closing pawl 24 and the cut-out groove formed in the panel 12 may be different.The closing rod 23 rotates the closing pawl 24 by rotating the closing lever 22, and the closing rod 23 may be configured such that one end of the closing rod 23 is rotatably disposed on the plate 12 and the other end is in contact with the closing pawl 24. In addition, the closing rod 23 can be elastically mounted in the direction of the closing pawl 24.The closing rod 23 is elastically supported with respect to the closing pawl 24, whereby the closing rod 23 is elastically supported in a direction that prevents the closing pawl 24 from rotating until the closing cable 21 is operated. One side of the closing rod 23 is held at one side of the closing pawl 24 to prevent the closing pawl 24 from rotating so that the sliding door 2 remains closed. Thus, the closing pawl 24 maintains the closing stopper 51 in a locked state, thus maintaining the sliding door 2 closed. In addition, a contact protrusion may be formed on the closing rod 23 to protrude. The contact protrusion is formed to come into contact with one side of the closing lever 22, so that when the closing lever 22 rotates, it rotates together with the closing rod 23. When the closing rod 23 rotates, the closing rod 23 and the closing pawl 24 at the other end of the closing rod 23 are separated, and the closing pawl 24 is rotated by the elastic member.The hold-open latch may be attached to the panel 12 so as to be spaced from the front latch toward the rear of the vehicle. When the slide door 2 is opened, the hold-open lock part restrains the slide of the slide door 2 and keeps it open. If the sliding door 2 begins to close, the hold-open locking part releases the restraint in order to allow the sliding door 2 to be slid. The hold-open lock member may include a hold-open cable 31 to which an operation signal of a passenger is transmitted, a hold-open cam 32 rotated by the hold-open cable 31, a hold-open pawl 34 retaining a hold-open stopper 52 formed on the lower pulley side, and a hold-open rod 33 for operating the hold-open pawl 34 upon rotation of the hold-open cam 32.The hold-open cable 31 may be configured to route a wire in the pipe so that the hold-open cable 31 is pulled when the operation for closing the slide door 2 is performed by the passenger.The hold-open cam 32 is rotatably supported on the plate 12 and connected to the end portion of the hold-open cable 31. The hold-open cam 32 is supported by an elastic member such as a torsion spring so as to be rotated in the opposite direction to the direction of the hold-open cable 31 when the hold-open cable 31 is not pulled. On the outer periphery of the hold-open cam 32, a profile is formed such that one side thereof protrudes and actuates the hold-open rod 33.The hold-open pawl 34, through which the hold-open stopper 52 formed on the lower roller side is penetrated, is rotatably disposed on the plate 12. The hold-open pawl 34 may be rotatably disposed on the elastic member plate 12 supported by an elastic member such as a torsion spring. The keep-open pawl 34 is rotated by the elastic member in the clockwise direction (based on FIG. 4 ) without being restricted by the keep-open rod 33. A penetration hole is formed on the one side of the hold-open pawl 34, and the hold-open stopper 52 penetrates the penetration hole.The hold-open rod 33 can be rotatably disposed on the plate 12. The hold-open rod 33 may be attached to be rotatable and elastically supported on the plate 12, and the hold-open rod 33 may be elastically supported to abut on the hold-open pawl 34. That is, one side of the keep open rod 33 always remains in contact with the keep open pawl 34.A protrusion pin 33 athat contacts the hold-open cam 32 may be formed on the hold-open rod 33, and a stopper protrusion 33 bis formed to prevent rotation of the hold-open pawl 34.The protrusion pin 33 amay be formed to protrude from the keep open rod 33 so as to contact the periphery of the keep open cam 32 when the keep open cam 32 rotates and the keep open rod 33 rotates in a direction opposite to the keep open cam 32.On one side of the hold-open rod 33, a stopper protrusion 33 bis formed, which inhibits the operation of the hold-open pawl 34.The hold-open pawl 34 may be arranged to be rotatable on the plate 12.The hold-open pawl 34 is disposed such that the center of rotation is elastically supported by the elastic member, whereby when the external force is not applied, the hold-open pawl 34 is supported by the elastic member to allow the roller to rotate. The keep open pawl 34 may be formed to extend to one side with respect to the rotation axis, and a penetration hole through which the keep open stopper 52 passes is formed in the extending portion. On the other hand, on the opposite side of the keep-open pawl 34, a stopper 34a may be formed on which the keep-open stopper 52 is formed. The stopper 34 amay be formed such that the periphery of the keep-open pawl 34 protrudes. The rotation of the hold-open pawl 34 is blocked when the stopper protrusion 33 bis caught at a portion where the hold-open pawl 34 and a stepped jaw are formed by the protrusion of the stopper 34 awhich inhibits the operation of the lower roller and thereby keeps the slide door 2 open.The rear end of the sliding door 2 may be provided with a rear latch 41 that maintains closing of the sliding door 2 between the rear end of the sliding door 2 and the vehicle body of the vehicle 1.The slide door 2 may also include a remote controller 42 for operating the close cable 21 and the keep open cable 31 when the occupant operates the inside handle or the outside handle.The configuration and operation of the rear latch 41 and the remote controller 42 are the same as those of a conventional rear latch, so a detailed description thereof will be omitted.An operation of an integrated door latch assembly of a sliding door according to the present invention will be described below.When the slide door 2 is closed, the closing pawl 24 holds the closing stopper 51 attached to the vehicle body so that the slide door 2 remains closed.First, a state in which the slide door 2 is opened from a closed state will be described. To open the slide door 2, the occupant operates the inside handle or the outside handle. Upon operation of the inside handle or the outside handle, the door lock integrated lock closing cable 21 is pulled off from the remote controller 42 mounted on the slide door 2, so that the closing pawl 24 releases the closing stopper 51 and the front side of the slide door 2 is released from the vehicle body.That is, as illustrated in FIG. 6, when the closing cable 21 is pulled, the closing lever 22 rotates clockwise and presses the closing rod 23 to rotate the closing rod 23 clockwise.When the closing rod 23 rotates, the closing pawl 24, the rotation of which has been restricted by the closing rod 23, is rotated clockwise by the elastic force of the elastic member and passes through the opened portions of the closing pawl 24 and that of the plate 12 to be aligned, so that the closing stopper 51 restricted to the closing pawl 24 can be separated.Thus, when the closing cable 21 is pulled, the closing pawl 24 ultimately releases the restriction of the closing striker 51 and thus opens the front end of the sliding door 2.On the other hand, when the inner handle or the outer handle is operated, the rear latch 41 is also released so that the rear end of the slide door 2 can open.Once the sliding door 2 is no longer restricted in the integral door latch and the rear latch 41, the occupant can open the sliding door 2 by pushing the sliding door 2.When the sliding door 2 is fully open, the hold-open latch 34 holds the hold-open stop 52 and the sliding door 2 remains open. By keeping the slide door 2 open, it is easy for the passenger to get in and out. When the slide door 2 is fully opened, the hold-open rod 33 prevents the hold-open pawl 34 from rotating, so that the slide door 2 remains open.When the occupant closes the sliding door 2, the hold-open pawl 34 releases the inhibition of the hold-open stopper 52, so that the sliding door 2 can transition from the open state to the closed state.As illustrated in FIG. 7, when the slide door 2 is closed, the hold-open cable 31 is pulled. When the hold-open cable 31 is pulled, the hold-open cam 32 rotates clockwise. When the hold-open cam 32 is rotated, the hold-open rod 33 rotates in the opposite direction to the hold-open cam 32, and when the hold-open rod 33 rotates, the hold-open pawl 34 rotates and the hold-open stopper 52 rotates to close the slide door 2.This is shown in Fig. 8 and is done as follows. In the opened state of the slide door 2 (left side of FIG. 8 ), the stopper protrusion 33 bof the hold-open rod 33 holds the stopper 34 aof the hold-open pawl 34, so that the rotation of the hold-open pawl 34 is inhibited and the hold-open pawl 34 retains the hold-open fitting 52 and thus keeps the slide door 2 open. On the other hand, when the slide door 2 starts closing (right side of FIG. 8 ), the hold-open cam 32 rotates and presses the protrusion pin 33 aof the hold-open rod 33 to rotate it. When the hold-open rod 33 is rotated, the stopper protrusion 33 bis spaced apart from the stopper 34 a. When the inhibition of the keep open pawl 34 by the keep open rod 33 is released, the keep open pawl 34 rotates by the elastic member such as a spring, and the inhibition of the keep open stopper 52 is released, thereby closing the slide door 2 from the open state.

Claims

An integrated door latch assembly arrangeable on a sliding door (2) slidably mounted on a side surface of a vehicle (1) to maintain an open state or a closed state of the sliding door (2), the integrated door latch assembly comprising: a panel (12) mounted on the lower front side of the sliding door (2); a front latch member mounted in the front side of the panel (12), wherein the front latch member is configured to maintain the closed state of the sliding door (2) by restricting a closing stopper (51) formed on a vehicle body when the sliding door (2) is closed, and releasing the restriction of the closing stopper (51) when the sliding door (2) starts to open; and a hold-open latch part mounted on the panel (12) and spaced apart from the front latch part toward a rear of the vehicle (1), the hold-open latch part being configured to maintain the open state by restricting sliding of the sliding door (2) when the sliding door (2) is open and releasing the restriction, so as to allow sliding of the sliding door (2) when the sliding door (2) starts closing.The integrated door latch assembly according to claim 1, wherein the panel (12) is fixed to a lower portion of the sliding door (2) and is attached at an upper side parallel to the floor to a lower bracket (11) shaped to be bent from the sliding door (2) and parallel to the floor.The integrated door latch assembly of claim 1, wherein a cut-out groove is formed on the panel (12), and wherein the closing stopper (51) enters and exits through the cut-out groove.The integrated door latch assembly according to claim 3, wherein the front latch part comprises: a closing lever (22) mounted on the plate (12) to be rotated when a closing cable (21) is pulled by operation of a user; a closing pawl (24) formed with a cut-out groove in a "U" shape into which the closing stopper (51) can enter and exit, the closing pawl (24) being rotatably mounted on the plate (12); and a closing rod (23) configured to rotate the closing pawl (24) when the closing lever (22) is rotated such that the cut-out groove of the closing pawl (24) and the cut-out groove of the plate (12) are aligned with each other.The integrated door latch assembly according to claim 4, wherein: the closing lever (22) is elastically supported opposite to the direction in which it is rotated upon operation of the closing cable (21); the closing pawl (24) is elastically supported in a direction in which the cut-out groove formed on the plate (12) and the cut-out groove formed on the closing pawl (24) are aligned; and the closing rod (23) is elastically supported in a direction that blocks the rotation of the closing pawl (24).The integrated door latch assembly according to claim 3, wherein the hold open latch part comprises: a hold open cam (32) attached to the panel (12) and rotated when a hold open cable (31) for closing the opened sliding door (2) is pulled; a hold open pawl (34) attached to be rotatable on the panel (12) and retaining a lower roller of the sliding door (2) when the sliding door (2) is opened; and a hold open rod (33) configured to retain the hold open pawl (34) upon opening the sliding door such that the hold open pawl (34) maintains the retaining state of the lower roller and release the retaining state of the lower roller when the sliding door (2) starts closing and the hold open cam (32) rotates.The integrated door latch assembly according to claim 6, wherein the keep open rod (33) comprises: a protrusion pin (33a) formed on a side of the keep open rod (33) so as to come into contact with a cam profile formed on the keep open cam (32); and a stopper protrusion (33b) configured to inhibit a side of the keep open pawl (34) and release the inhibited state of the lower roller when the keep open rod (33) rotates.The integrated door latch assembly according to claim 7, wherein: a stopper (34a) is formed on the hold-open pawl (34) protruding in the circumferential direction thereof; the stopper protrusion (33a) is configured to inhibit the rotation of the hold-open pawl (34) when coupled to a stepped jaw formed between an end portion of the stopper (34a) and the hold-open pawl (34); and the inhibited state of the lower roller is released when the stopper protrusion (33a) is separated from the stepped jaw.The integrated door latch assembly according to claim 6, wherein: the hold-open cam (32) is elastically supported opposite to the direction in which it rotates when the hold-open cable (31) is pulled; the hold-open rod (33) is elastically supported to closely contact the hold-open cam (32); and the hold-open pawl (34) is elastically supported in a direction in which the lower roller is spaced apart from the vehicle body.A method of operating a sliding door (2) of a vehicle (1) comprising an integrated door latch assembly disposed on the sliding door (2), the integrated door latch assembly comprising a panel (12) attached to the lower front side of the sliding door (2), a front latch part attached in front of the panel (12), and a hold-open latch part attached to the panel (12) and spaced apart from the front latch part toward a rear side of the vehicle (1), the method comprising: holding the sliding door (2) in a closed state by restricting a close stopper (51) formed on a vehicle body when the sliding door (2) is closed; opening the sliding door (2) such that the sliding door (2) is in an open state, the opening comprising releasing the restriction of the closing stopper (51) when the sliding door (2) starts to open; and maintaining the open state by restricting the sliding operation of the sliding door (2) when the sliding door (2) is open; and closing the sliding door (2) such that the sliding door (2) is in the closed state, the closing comprising releasing the restriction in a manner that allows the sliding door (2) to slide when the sliding door (2) starts to close.

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