JP5181356B2 - Door latch device for sliding door for vehicle - Google Patents

Description

  The present invention relates to a door latch device for a vehicle sliding door provided with a sash for guiding and supporting a window glass so as to be slidable in the vertical direction.

  A sliding door for a vehicle is supported on a side surface of the vehicle body so as to be slidable in the front-rear direction, and a front door latch and a rear door latch that can be engaged with a striker on the vehicle body side when the vehicle door is closed at the front and rear portions of the sliding door, respectively. A device is provided. The front door latch device is provided on the sliding door, extending to the rear from the meshing base portion and the meshing base portion for pivotally supporting the latch that can be engaged with the striker and the ratchet that can be engaged with the latch. And a lever support portion for pivotally supporting a lever that follows the operation of the operation handle (see, for example, Patent Document 1).

  The closing operation of the sliding door moves to the closing position while being displaced obliquely forward from the front of the closing position, so that the striker S engaged with the front door latch device 100 slides in plan view as shown in FIG. The door 1 enters the sliding door 1 from the meshing entry direction C inclined with respect to the inner side surface of the inner panel 1B and the front end surface 1C. Therefore, the meshing base portion 101 of the front door latch device 100 is fixed to the front end surface 1C in a posture inclined with respect to the inner surface and the front end surface 1C of the inner panel 1B so as to be parallel to the meshing approach direction C in plan view. Is done.

JP 2005-314899 A

  However, when the meshing base portion 101 of the front door latch device 100 is fixed in a posture inclined with respect to the inner surface of the inner panel 1B and the front end surface 1C, as shown in FIG. The extending lever support portion 102 protrudes to a position overlapping the sash 104 for supporting the window glass W so as to be slidable in the vertical direction in plan view. Therefore, the lower end of the sash 104 must be set at a position above the lever support 102 so as not to overlap the lever support 102 in a side view. As a result, the lowest position of the window glass W is limited, and there is a problem that the opening amount of the window glass W cannot be widened.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a door latch device for a sliding door for a vehicle that allows an opening amount of a window glass to be increased by preventing a lever support portion from overlapping a sash in a plan view. It is said.

According to the present invention, the above problem is solved as follows.
The first invention is mounted in a slide door that is supported by the vehicle body so as to be slidable in the front-rear direction and is provided with a sash for guiding and supporting the window glass in the up-down direction, and when the slide door is closed, In a door latch device for a sliding door that can be engaged with a striker on a vehicle body side, the sliding door is fixed to an end surface in the sliding door, is substantially parallel to the meshing approach direction of the striker in a plan view, and A meshing base portion having a vertical surface inclined with respect to an inner surface and an end surface of the inner panel; a latch pivotally supported by an axis perpendicular to the vertical surface of the meshing base portion and engageable with the striker; A ratchet that is pivotally supported by an axis orthogonal to the vertical surface of the meshing base portion and engages with the latch to prevent rotation of the latch. And an extension portion provided on the meshing base portion and extending toward the inner side surface of the inner panel, and being connected to the meshing base portion via the extension portion, and on the inner side surface of the inner panel. And a lever support portion that is disposed between the sash and the inner side surface of the inner panel in plan view, and an operation handle that is pivotally supported by the lever support portion and provided on the slide door. And a linkage lever linked directly or indirectly to the ratchet so that the ratchet is rotated in a direction to be detached from the latch based on the operation.

  According to a second invention, in the first invention, the extension portion is formed by bending a part of the meshing base portion facing the inner side surface of the inner panel toward the inner side surface of the inner panel. And

  A third invention is characterized in that, in the first or second invention, the linkage lever is pivotally supported on a surface of the lever support portion that faces the inner surface of the inner panel.

  According to the present invention, the lever support portion is connected to the meshing base portion via the extension portion that extends toward the inner side surface of the inner panel, and the lever support portion is configured to have the By arrange | positioning between, the lower part of a sash can be extended to the position which overlaps with a lever support part by side view, and the expansion of the opening amount of a window glass can be enabled.

It is a side view of a vehicle provided with a slide door to which the present invention is applied. It is a side view which shows the internal structure of the slide door to which this invention is applied. FIG. 3 is an enlarged cross-sectional view taken along line III-III in FIG. 2. It is a disassembled perspective view of the front door latch apparatus concerning this invention. It is a perspective view similarly. It is a vehicle outer side view similarly. It is a vehicle inner side view similarly. It is explanatory drawing which shows the action | operation of a linkage lever. It is a cross-sectional view of the principal part for demonstrating the prior art.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description, the left side in FIGS. 1 and 2 is “rear”, the right side is “front”, the front side of the page is “outside”, and the back side is “inside”. In FIG. 2, a form in which the outer panel 1 </ b> A of the slide door 1 is removed is shown in order to clearly show the internal structure of the slide door 1.

  As shown in FIG. 1, the sliding door 1 provided with the window glass W that can be opened and closed in the vertical direction includes an outer panel 1A that forms the vehicle outer side and an inner panel 1B that forms the vehicle inner side (see FIGS. 2, 3, and 5). From the closed position (see FIGS. 1 and 3), which is formed and closes the door opening 10 provided on the side surface of the vehicle body, to a fully open position that moves rearward along the side surface of the vehicle body while moving slightly outward from the side surface of the vehicle body. It moves from the fully open position to the front (in the direction of arrow A in FIG. 3) along the side of the vehicle body, and closes while being displaced from the front of the closed position to the front side of the vehicle (in the direction of arrow B in FIG. 3). The front and rear guide rails 5 and the upper and lower guide rails (not shown) provided on the side of the vehicle body are slidably supported in the front-rear direction so as to move to the position.

  As shown in FIGS. 1 and 2, a rear door latch device 2 that can be engaged with a rear striker (not shown) on the vehicle body side when the slide door 1 is closed is provided at the rear of the slide door 1. A front door latch device 3 that can be engaged with a front striker S (see FIG. 3) on the vehicle body side when the slide door 1 is closed is provided at the front portion.

  Further, an operation relay for relaying operations of an outside handle 9 serving as an operation handle provided on the vehicle exterior side of the slide door 1 and an inside handle (not shown) provided on the vehicle interior side at the front portion in the slide door 1. A device 6 is provided, and front and rear sashes 4 and 41 for guiding and supporting the window glass W so as to be slidable in the vertical direction are also fixed to the front and rear portions. The operation relay device 6 is connected to the front door latch device 3 and the rear door latch device 2 via operation force transmission members 7 and 8 each formed of a cable or a rod.

  As shown in FIGS. 3 to 7, the front door latch device 3 is made of a metal plate that forms a part of a meshing base portion fixed to a front end surface 1 </ b> C in the slide door 1 by a bolt 23 (see FIG. 2). The base plate 11 is fixed between the base plate 11 and the cover plate 12, the metal cover plate 12 forming a part of the meshing base portion fixed to the front end face 1 C in the slide door 1 by the bolt 23. A body 13 made of a synthetic resin forming a part of the meshing base portion, a latch 16 and a ratchet 17 pivotally supported between the base plate 11 and the body 13, and a predetermined direction with respect to the latch 16 and the ratchet 17. The springs 18 and 19 for applying the urging force, the mesh release lever 20 pivotally supported between the body 13 and the cover plate 12, and the operating force transmission member 7 And a linkage lever 21 to be sintered. The front door latch device 3 is covered with a synthetic resin cover 24 as necessary. The cover 24 is shown only in FIGS.

  The base plate 11 includes upper and lower mounting pieces 11a and 11a fixed to the front end surface 1C of the slide door 1 by bolts 23, and is substantially parallel to the meshing approach direction C of the striker S in a plan view shown in FIG. The base 11b that forms a vertical surface that is inclined with respect to the inner surface of the inner panel 1B and the front end face 1C, and the upper and lower ends of the base 11b and the upper and lower mounting pieces 11a and 11a are connected to the upper and lower mounting pieces 11a and 11a. Horizontal portions 11c and 11c.

  The cover plate 12 is attached so as to cover the base plate 11 and the body 13, and upper and lower attachment pieces 12a, 12a fixed to the front end surface 1C of the slide door 1 together with the attachment pieces 11a, 11a of the base plate 11 by bolts 23. 3, a base 12b that forms a vertical surface that is substantially parallel to the meshing approach direction C of the striker S and that is inclined with respect to the inner surface and the front end surface 1C of the inner panel 1B of the slide door 1 in a plan view shown in FIG. The inner surface of the inner panel 1B is formed by bending the substantially horizontal upper and lower horizontal portions 12c and 12c connecting the upper and lower ends of the base portion 12b and the upper and lower mounting pieces 12a and 12a, respectively, and the rear end of the base portion 12b at a substantially right angle. The inner panel 1 extends from the extension 12d extending toward the end and the end of the extension 12d (the end toward the inner surface of the inner panel 1B). And a substantially parallel lever support portion 12e and the inner surface of the inner panel 1B extending rearwardly along the inner side surface.

  The extension 12d is formed by bending a part of the cover plate 12 facing the inner surface of the inner panel 1B, that is, a rear portion of the base 12b toward the inner surface of the inner panel 1B.

  As described above, the lever support portion 12e is connected to the rear end of the cover plate 12 via the extension portion 12d, so that the lever support portion 12e is connected to the inner surface of the inner panel 1B and the sash in a plan view shown in FIG. 4 can be arranged. As a result, the lever support portion 12e and the linkage lever 21 pivotally supported by the lever support portion 12e do not overlap the window glass W and the sash 4 in plan view.

  The latch 16 is pivotally supported by a shaft 14 orthogonal to the vertical surface of the base 11b between the base 11b of the base plate 11 and the body 13, and engages with the striker S that enters the body 13 when the sliding door 1 is closed. To do.

  The ratchet 17 is pivotally supported by a shaft 15 parallel to the shaft 14 below the latch 16 between the base portion 11b of the base plate 11 and the body 13, and engages with the latch 16 engaged with the striker S when the slide door 1 is closed. Then, the sliding door 1 is restrained to the closed position by preventing the rotation of the latch 16.

  The mesh release lever 20 is pivotally supported by a shaft 15 between the body 13 and the base portion 12 b of the cover plate 12, and a protrusion 20 a protruding toward the ratchet 17 is provided in an engagement hole 17 a provided in the ratchet 17. By engaging, it rotates together with the ratchet 17. Further, an engagement protrusion 20 b that protrudes toward the linkage lever 21 is provided on the surface opposite to the surface on which the protrusion 20 a of the mesh release lever 20 is provided.

  The linkage lever 21 is pivotally supported by a lever support portion 12e of the cover plate 12 by a shaft 22 facing in the left-right direction, and an end portion of the operating force transmission member 7 is connected to a connecting arm portion 21a extending downward. The The linkage lever 21 is disposed on the surface side of the lever support portion 12e of the cover plate 12 that faces the inner surface of the inner panel 1B. Thereby, the operation force transmission member 7 which connects the operation lever device 6 fixed to the linkage lever 21 and the inner panel 1B to each other can be installed along the side surface of the inner panel 1B.

  When the outside handle 9 or the inside handle is operated, the operation is transmitted to the linkage lever 21 via the operation relay device 6 and the operation force transmission member 7, and the linkage lever 21 is, for example, a standby position shown in FIG. To the release direction (counterclockwise in FIG. 7). In addition, a contact arm portion 21 b that extends forward so as to intersect with the engagement protrusion 20 b of the mesh release lever 20 is provided at the front portion of the linkage lever 21.

  At the front end of the contact arm portion 21b, a contact portion having a substantially U-shape is provided in a side view (see FIGS. 7 and 8) that can contact the engagement protrusion 20b of the engagement release lever 20. The contact portion includes a first contact portion 21c that can contact the engaging protrusion 20b in the initial operation of the linkage lever 21, and a second contact portion 21d that can contact the engagement protrusion 20b in the later operation. Formed from.

  As shown in FIG. 8, when the linkage lever 21 rotates from the standby position (solid line position) in the release direction (counterclockwise direction), the first contact portion 21c first contacts the engagement protrusion 20b from above. Then, the engaging protrusion 20b is rotated in the direction of the arrow. As a result, the ratchet 17 rotates in the release direction (counterclockwise in FIG. 6) from the engagement position (see FIG. 6) engaged with the latch 16 via the engagement release lever 20 against the urging force of the spring 19. Move. Subsequently, as shown in FIG. 8, when the linkage lever 21 is rotated to the operating position indicated by the two-dot chain line, the second abutting portion 21d abuts against the engaging protrusion 20b, and the engaging protrusion 20b. Is continuously rotated in the direction of the arrow. As a result, as can be understood from FIG. 8, even when the rotational axis direction of the linkage lever 21 and the rotational axis direction of the mesh release lever 20 cross each other obliquely, the linkage lever 21 is in the standby position. The contact angle of the first contact portion 21c with respect to the engagement protrusion 20b and the engagement protrusion 21d of the second contact portion 21d when the linkage lever 21 is rotated to the operating position indicated by the two-dot chain line. Therefore, the rotation of the linkage lever 21 can be smoothly transmitted to the ratchet 17.

  In the present embodiment, the linkage lever 21 and the ratchet 17 are indirectly linked via the mesh release lever 20, but instead, the mesh release lever 20 is omitted and the linkage lever 21 is connected to the ratchet 17 You may link directly to. In this case, the engaging protrusion 20 b is provided on the ratchet 17.

  As described above, when the front door latch device 3 according to the present embodiment is employed in the slide door 1, the lever support portion 12e of the front door latch device 3 is disposed between the inner surface of the inner panel 1B and the sash 4. Can do. As a result, as shown in FIG. 2, the lower portion of the sash 4 is extended downward so as to overlap the lever support portion 12e of the front door latch device 3 in a side view, and the window glass W is moved downward as compared with the conventional case. Can do.

In the above-described embodiment, the meshing base portion is formed by the base plate 11, the body 13, and the cover plate 12. However, the present invention is not limited to the above-described embodiment, and may be as follows.
(A) The body 13 is omitted, and the meshing base portion includes the base plate 11 and the cover plate 12. In this case, the latch 16 and the ratchet 17 are pivotally supported between the base portion 11 b of the base plate 11 and the base portion 12 b of the cover plate 12.
(B) The mounting piece 11a of the base plate 11 is omitted, and only the mounting piece 12a of the cover plate 13 is fixed to the front end face 1C in the slide door 1.
(C) The mounting piece 12a of the cover plate 12 is omitted, and only the mounting piece 11a of the base plate 11 is fixed to the front end face 1C in the slide door 1.
(D) The cover plate 12 is omitted, and the meshing base portion includes the base plate 11 and the body 13. In this case, the extension part 12d is provided on the body 13, and the lever support part 12e is connected to the body 13 via the extension part 12d.

DESCRIPTION OF SYMBOLS 1 Sliding door 1A Outer panel 1B Inner panel 1C Front end surface 2 Rear door latch device 3 Front door latch device 4, 41 Sash 5 Guide rail 6 Operation relay device 7 Operation force transmission member 8 Operation force transmission member 9 Outside handle (operation handle) )
10 Door opening 11 Base plate (meshing base part)
11a Mounting piece 11b Base portion 11c Horizontal portion 12 Cover plate (meshing base portion)
12a Mounting piece 12b Base portion 12c Horizontal portion 12d Extension portion 12e Lever support portion 13 Body (meshing base portion)
14, 15 Shaft 16 Latch 17 Ratchet 17a Engagement hole 18, 19 Spring 20 Engagement release lever 20a Projection 20b Engagement projection 21 Linking lever 21a Connection arm 21b Contact arm 21c First contact 21d Second contact Contact 22 Shaft 23 Bolt 24 Cover S Strike W Window glass

Claims (3)

Mounted in a slide door that is supported by the vehicle body so that it can slide open and close in the front-rear direction, and has a sash for guiding and supporting the window glass in the vertical direction inside, and is engaged with the striker on the vehicle body side when the slide door is closed In a door latch device for a sliding door that can be combined,
The meshing is fixed to the end surface in the sliding door, and has a vertical surface that is substantially parallel to the meshing approach direction of the striker in plan view and is inclined with respect to the inner surface and the end surface of the inner panel of the sliding door. A base part;
A latch pivotally supported by an axis orthogonal to the vertical surface of the meshing base portion and engageable with the striker;
A ratchet that is pivotally supported by an axis perpendicular to the vertical surface of the meshing base portion, engages with the latch, and prevents rotation of the latch;
An extension portion provided on the meshing base portion and extending toward an inner surface of the inner panel;
It is connected to the meshing base portion through the extension portion, extends along the inner surface of the inner panel, and is disposed between the sash and the inner surface of the inner panel in plan view. A lever support,
The ratchet is pivotally supported by the lever support portion and linked directly or indirectly to the ratchet so that the ratchet rotates in a direction to release from the latch based on an operation of an operation handle provided on the slide door. A door latch device for a sliding door for a vehicle.   2. The vehicle sliding door according to claim 1, wherein a part of the extension base portion facing the inner side surface of the inner panel is bent toward the inner side surface of the inner panel. Door latch device.   The door latch device for a sliding door for a vehicle according to claim 1 or 2, wherein the linkage lever is pivotally supported on a surface of the lever support portion that faces the inner surface of the inner panel.

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