JP6782285B2 - Automotive door latch device - Google Patents

Description

The present invention relates to an automobile door latch device.

The door latch device for automobiles can maintain the meshed state between the latch and the striker by engaging the latch capable of engaging with the striker on the vehicle body side and the latch in the body fixed to the door when the door is closed. Each of the poles is pivotally supported and has an elastic stopper for stopping the pole at the origin position (see, for example, Patent Document 1).

Japanese Patent No. 4335761

However, in the automobile door latch device described in Patent Document 1, since the elastic stopper for stopping the pole at the origin position is arranged in the body, it is necessary to secure a space for arranging the elastic stopper in the body. Therefore, the space became an obstacle to the miniaturization of the body, which led to an increase in the size of the entire device.

In view of the above problems, it is an object of the present invention to provide an automobile door latch device capable of downsizing the body by changing the mounting position of the elastic stopper.

In order to solve the above problems, the present invention comprises a body fixed to a door, a cover plate fixed to the front surface side of the body, a back plate fixed to the back surface side of the body, and the body and the cover. A latch that is rotatably pivotally supported in an accommodating portion between the plate and can engage with a striker on the vehicle body side when the door is closed, and a first shaft portion provided at one end are provided on the cover plate. A pole that is pivotally supported by the shaft hole and that the second shaft portion provided at the other end is pivotally supported by the second shaft hole provided in the back plate so that the pole can be engaged with the latch meshed with the striker. A spring that urges the pole to engage the latch in the engaging direction, and an elastic stopper that stops the pole at the origin position where the pole engages the latch when the pole comes into contact with the pole. The back plate has a stopper support portion located on the back surface side of the body, the elastic stopper is on the back surface side of the body and is fixed to the stopper support portion, and the pole is an urging force of the spring. It has a claw portion that can be engaged with the latch in the accommodating portion and a rotating arm portion that projects to the back surface side of the body through an opening provided in the body, and the rotating arm portion is said. It is characterized in that it stops at the origin position by coming into contact with the elastic stopper.

Preferably, the elastic stopper is arranged in a region between the first shaft portion and the second shaft portion of the pole in a side cross-sectional view perpendicular to the rotation axis direction of the pole.

Preferably, the back plate has a leg that is bent from the vicinity of the second shaft hole toward the cover plate in parallel with the rotation axis direction of the pole, and the stopper support portion is the leg portion. Provided in.

Preferably, the tip of the leg contacts the back surface of the cover plate through the opening of the body and is bolted to the back surface of the cover plate.

Preferably, the stopper support portion protrudes from the leg portion in a direction orthogonal to the rotation axis direction of the pole, and the elastic stopper is fitted to the stopper support portion from a direction orthogonal to the rotation axis direction. It is fixed.

Preferably, the body has a wall portion that is in close proximity to the end face of the elastic stopper.

According to the present invention, since the elastic stopper is fixed to the stopper support portion located on the back surface side of the body, it is not necessary to secure a space for arranging the elastic stopper in the accommodating portion of the body, so that the body can be downsized, and thus the automobile. The size of the door latch device for use can be reduced.

It is a front view of the door latch device for automobiles which concerns on this invention. Similarly, it is an exploded perspective view seen from the front diagonal direction of the door latch device for automobiles. Similarly, it is an exploded perspective view seen from the back diagonal direction of the door latch device for automobiles. It is a front view of the meshing assembly with the cover plate removed. It is a back view of the meshing assembly. It is a back view of the latch, the pole and the elastic stopper in the unlatch state. It is a back view of the latch, the pole and the elastic stopper when it is between the unlatch state and the half-latch state. It is a back view of the latch, the pole and the elastic stopper in the half-latch state. It is a back view of the latch, the pole and the elastic stopper when it is between the half-latch state and the full-latch state. It is a back view of the latch, the pole and the elastic stopper in the full latch state. It is an enlarged view of the arrow A part in FIG. FIG. 11 is a sectional view taken along line XII-XII in FIG. FIG. 11 is a cross-sectional view taken along the line XIII-XIII in FIG. FIG. 5 is an enlarged cross-sectional view taken along the line XIV-XIV in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the automobile door latch device 1 is attached to the door D that is openably and closably supported by the vehicle body, and holds the door D in the closed state by engaging with the striker S on the vehicle body side. The meshing assembly 3 including the meshing element, the meshing-related element, the operating element, and the operating-related element, and the locking / unlocking that is attached to the back surface side of the meshing assembly 3 and controls the disengagement of the meshing element and the striker S to be possible or impossible. It includes an operation assembly 4 including elements.

The operation assembly 4 has a casing 5 made of synthetic resin which forms an outer shell and is fixed to the back surface of the body 6 of the meshing assembly 3 which will be described later, and is configured by arranging a locking / unlocking element in the casing 5. .. The locking / unlocking element is connected to a key cylinder for lock / unlock operation (not shown) provided on the outer surface of the door D and a lock knob (not shown) for lock / unlock operation provided inside the vehicle to unlock the door. In the locked state, the release operation is performed based on the door opening operation of the outside handle (not shown) provided on the outer surface of the door D and the inside handle provided on the inner side surface, and the release operation is performed by one of the meshing elements. By transmitting to a certain pole 10 described later, the pole 10 is disengaged and the door D can be opened. However, since the locking / unlocking element is not directly related to the present invention, detailed description thereof will be omitted. To do.

The meshing assembly 3 is a synthetic resin body 6 fixed to the door D by a plurality of (three in this embodiment) bolts 2A, 2B, and 2C, and the surface of the body 6 (facing the right side in FIGS. 2 and 3). A body body (unsigned) including a metal cover plate 7 that closes the opening on the side), and a metal back plate 8 fixed to the back surface of the body 6 (the surface facing the left side in FIGS. 2 and 3). , Latch 9 and pole 10 which are meshing elements, bumper bar 11, latch spring 12, pole spring 13 and elastic stopper 14 which are meshing related elements, and first outside lever 15 and second outside lever 16 which are operating elements. And a lever spring 17 which is an operation-related element.

The body 6 has a box shape with an opening on the front surface side, and is located in a housing portion 62 in which a latch 9 and a pole 10 are arranged and a substantially central portion in the vertical direction of the housing portion 62, and is a striker when the door D is closed. S has a striker entry groove 63 that can be entered from the right in FIGS. 1 and 4. The striker S that has entered the striker entry groove 63 meshes with the latch 9 as described later. Further, a cable support portion 60 for supporting the lower end portion of the outer tube 20 of the Bowden cable connected to the outside handle is provided on the side portion of the body 6 facing the vehicle outside (left side in FIGS. 1 and 4). .. The terminal portion 21a provided at the lower end portion of the inner cable 21 extending from the lower end of the outer tube 20 is connected to the first outside lever 15.

A latch shaft hole 64 into which a latch shaft 18 for pivotally supporting the latch 9 is inserted and a lever shaft 19 for pivotally supporting the second outside lever 16 on the back surface of the body 6 are inserted into the accommodating portion 62. Lever shaft hole 65, through hole 66 through which bolt 2C of the three bolts 2A, 2B, and 2C penetrates, and an opening for projecting the rotation arm portion 104 described later of the pole 10 toward the back surface side of the body 6. A portion 67 is provided.

The cover plate 7 is fixed to the body 6 so as to close the accommodating portion 62 of the body 6 from the surface side, and when the door D is closed, the notch 71 through which the striker S can enter and the upper portion of the notch 71. A latch shaft hole 72 into which the latch shaft 18 is inserted, and a first pole shaft below the notch 71 into which the first shaft portion 101 provided at one end of the pole 10 is rotatably inserted. The holes 73, the screw holes 74 and 74 into which the bolts 2A and 2B of the bolts 2A, 2B and 2C are screwed, the through hole 75 through which the bolt 2C penetrates, and the shaft hole 76 into which the lever shaft 19 is inserted are formed. Have.

The through hole 75 of the cover plate 7 is formed by burring. As a result, as shown in FIGS. 12 and 13, an annular portion 75a that annularly protrudes to the back side (left side in FIG. 12 and upper side in FIG. 13) is provided around the through hole 75. The annular portion 75a fits into the through hole 66 of the body 6.

As shown in FIG. 4, the bumper bar 11 is arranged at the back of the striker entry groove 63 of the body 6. Preferably, the bumper bar 11 is assembled to the body 6 by fitting the bumper bar 11 from the back side of the body 6 through the bumper bar assembly hole 63a provided in the body 6 to the inner part of the striker entry groove 63, as can be understood from FIG. It is done by fixing. When the door D is closed, the bumper bar 11 collides with the striker S that has entered the striker entry groove 63, so that the bumper bar 11 has a cushioning action when the door D is closed and a striker that meshes with the meshing groove 93 of the latch 9 at the full latch position. Suppress the rattling of S.

The back plate 8 is fixed to the back surface of the body 6, and is provided with a latch shaft hole 81 into which the tip end portion of the latch shaft 18 is inserted and a second shaft portion 102 provided at the other end of the pole 10 in the rotation axis 0 direction. The body 6 for pivotally supporting the second pole shaft hole 82 into which the lever shaft 19 is rotatably inserted, the lever shaft hole 83 into which the tip of the lever shaft 19 is inserted, and the second outside lever 16 on the back surface of the body 6. It is bent toward the back surface of the cover plate 7 from the vicinity of the shaft hole 84 into which the shaft portion 68 provided on the back surface of the pole 10 is inserted and the vicinity of the second pole shaft hole 82 in parallel with the rotation axis 0 direction of the pole 10. A screw hole 87 provided in the leg portion 85, a stopper support portion 86 for supporting the elastic stopper 14, a bent portion 85a provided at the tip of the leg portion 85, and a bent portion 85a into which the bolt 2C is screwed. And a holding portion 88 that holds down the bumper bar 11 assembled to the body 6 from the back side of the body 6.

As shown in FIGS. 12 and 13, the bent portion 85a of the leg portion 85 of the back plate 8 comes into contact with the tip of the annular portion 75a of the cover plate 7 fitted in the through hole 66 of the body 6, and the bolt 2C Is screwed into the screw hole 87 to be fastened and fixed to the back surface of the cover plate 7. As a result, the rigidity and position accuracy of the leg portion 85 and the stopper support portion 86 provided on the leg portion 85 are increased.

The stopper support portion 86 is provided on the leg portion 85 so as to be located on the back surface side of the body 6 and within the rotation locus of the rotation arm portion 104 of the pole 10. Preferably, as shown in FIG. 11, the stopper support portion 86 is provided so as to project from the leg portion 85 toward the wall portion 61 provided on the back surface of the body 6.

The elastic stopper 14 for stopping the pole 10 at the origin position described later is fixed to the stopper support portion 86 of the back plate 8 located on the back surface side of the body 6. Preferably, the elastic stopper 14 is fixed to the stopper support portion 86 by inserting it from the left side in FIG. 11, for example, and the end surface (left end surface in FIG. 11) of the elastic stopper 14 is close to the wall portion 61 provided on the body 6. However, it is provided so that it can come into contact with the wall portion 61. In this way, the wall portion 61 can prevent the elastic stopper 14 from moving in the direction of exiting from the stopper support portion 86 (to the left in FIG. 11), so that the elastic stopper 14 can be reliably fixed to the stopper support portion 86.

Further, the elastic stopper 14 is a region between the first shaft portion 101 and the second shaft portion 102 of the pole 10 in a side cross-sectional view (for example, FIG. 14) perpendicular to the rotation axis 0 direction of the pole 10. It is arranged so as to be located in B (see FIG. 14).

As shown in FIG. 5, the first outside lever 15 is pivotally supported by a shaft portion 68 integrally formed with the body 6 between the back surface of the body 6 and the back plate 8, and the outside of the vehicle (in FIG. 5). By connecting the terminal portion 21a of the inner cable 21 of the Bowden cable to the end portion (on the right side), the release direction (counterclockwise in FIG. 5) is centered on the shaft portion 68 in conjunction with the opening operation of the outside handle. Rotate by a predetermined angle.

The second outside lever 16 is pivotally supported by a lever shaft 19 between the back surface of the body 6 and the back plate 8, and is linked to the rotation of the first outside lever 15 in the release direction. A predetermined angle is rotated around 19 in the release direction (clockwise in FIG. 5). The rotation of the second outside lever 16 in the release direction is transmitted to the pole 10 as an release operation via the lock / unlock element if the lock / unlock element of the operation assembly 4 is in the unlocked state.

The latch 9 is pivotally supported by the latch shaft 18 in the accommodating portion 62 between the body 6 and the cover plate 7, and is opened in the opening direction by the latch spring 12 arranged on the back surface side of the body 6 (in FIGS. 1 and 4). It is urged counterclockwise (clockwise in FIGS. 6 to 10), and when the door D is in the open state, it is held in the unlatch position (position shown in FIG. 4 (two-point chain line) and FIG. 6), and the door D is held. Is held in the full latch position (position shown in FIG. 4 (solid line) and FIG. 10 respectively) when fully closed, and held in the half latch position (position shown in FIG. 8) when the door D is in the half-door state. ..

A full latch engaging portion 91 and a half latch engaging portion 92 to which the claw portion 103 of the pole 10 can be engaged are provided on the outer periphery of the latch 9. Between the full latch engaging portion 91 and the half latch engaging portion 92, a meshing groove capable of engaging the striker S that has entered the striker entry groove 63 of the body 6 and the notch 71 of the cover plate 7 when the door D is closed. 93 is provided. A shaft hole 94 into which the latch shaft 18 is relatively rotatably inserted is provided in the central portion of the latch 9.

When the door D is closed, the striker S meshes with the meshing groove 93, so that the latch 9 is closed from the unlatch in the closing direction (clockwise in FIG. 4 and counterclockwise in FIG. 6) against the urging force of the latch spring 12. Rotates to the full latch position via the half latch position (the position between the unlatch position and the full latch position).

As can be understood from FIG. 14, the pole 10 is formed by covering the surface of a plate-shaped core material formed by press punching a metal plate material with a synthetic resin material, and the opening 67 of the body 6. A synthetic resin first shaft portion 101 arranged inside and formed at one end in the 0 direction of the rotation axis is rotatably inserted into the first pole shaft hole 73 of the cover plate 7, and is also formed at the other end. The second shaft portion 102 of the resin is rotatably inserted into the second pole shaft hole 82 provided in the back plate 8. As a result, the pole 10 is pivotally supported between the cover plate 7 and the back plate 8 in a form that penetrates the opening 67 of the body 6.

Further, as shown in FIGS. 6 to 10, the pole 10 abuts on the claw portion 103 that can engage with the full latch engaging portion 91 and the half latch engaging portion 92 of the latch 9 and the elastic stopper 14. The claw portion 103 is provided with a full latch engaging portion 91 or a full latch engaging portion 91 by a pole spring 13 arranged on the back surface side of the body 6 while having a rotating arm portion 104 for stopping the wheel at the origin position (positions shown in FIGS. It is urged in the engaging direction (clockwise in FIG. 4 and counterclockwise in FIGS. 6 to 10) to engage with the half-latch engaging portion 92.

As shown in FIGS. 6 to 10, the pole spring 13 is a torsion spring, and the coil portion 13a is wound around a support portion 69 provided on the back surface of the body 6, and one end portion 13b is one of the body 6. The other end 13c, which is hooked on the portion and bent in an L shape, is hooked on the curved hook portion 105 provided under the claw portion 103 of the pole 10, so that the pole 10 is To give an urging force in the engaging direction. In this way, by hooking the L-shaped other end portion 13c of the pole spring 13 to the hook portion 105, the other end portion 13c of the pole spring 13 can be reliably hooked to the pole 10 and the pole 10 can be hooked. Can be reliably urged in the engaging direction.

As shown in FIGS. 6 to 10 and 14, the claw portion 103 of the pole 10 projects to the right from the portion closer to the first shaft portion 101, and in the accommodating portion 62 between the body 6 and the cover plate 7. When the latch 9 is in the half-latch position, the door D is held in the half-door position by engaging with the half-latch engaging portion 92, and the latch 9 is in the full latch position, as shown in FIG. Occasionally, as shown in FIG. 10, the door D is held in the fully closed position by engaging the full latch engaging portion 91.

As shown in FIG. 14, the rotating arm portion 104 of the pole 10 protrudes from the portion closer to the second shaft portion 102 to the claw portion 103 so as to protrude from the opening 67 of the body 6 toward the back surface side of the body 6. The pole 10 is stopped at the origin position by protruding to the left in the opposite direction to the above direction and abutting the elastic stopper 14 located on the back surface side of the body 6 from above as shown in FIGS.

As shown in FIG. 14, the tip of the rotating arm portion 104 protrudes in the back direction in parallel with the rotation axis 0 direction, and when the locking / unlocking element of the operation assembly is released, the locking / unlocking element can come into contact with the transmission. A portion 104a is provided. When the unlocking operation of the locking / unlocking element is transmitted to the transmission unit 104a, the pole 10 rotates by a predetermined angle in the unlocking direction (counterclockwise in FIG. 4 and clockwise in FIGS. 6 to 10) around the rotation axis 0. The claw portion 103 is disengaged from the full latch engaging portion 91 or the half latch engaging portion 92 of the latch 9 to allow the door D to be opened.

Next, the action when the door D is closed will be described with reference to FIGS. 6 to 10.
When the door D is in the open state, as shown in FIG. 6, the latch 9 is in the unlatch position, and the pole 10 has the rotating arm portion 104 with respect to the elastic stopper 14 due to the urging force of the pole spring 13. It is stopped at the origin position where it abuts from above.

From this state, when the striker S enters the striker entry groove 63 and the notch 71 with the closing operation of the door D, the striker S meshes with the meshing groove 93 of the latch 9. As a result, the latch 9 rotates about the latch shaft 18 from the unlatch position to the half-latch position (counterclockwise in FIG. 6). As shown in FIG. 7, when the latch 9 is in a position between the unlatch position and the half-latch position, the pole 10 slides on the outer peripheral edge of the latch 9 in front of the half-latch engagement portion 92 to obtain the origin. It is forcibly rotated clockwise from the position against the urging force of the pole spring 13, and the rotating arm portion 104 is separated from the elastic stopper 14.

Then, as shown in FIG. 8, when the latch 9 reaches the half latch position, the pole 10 is rotated toward the origin position by the urging force of the pole spring 13, and the rotating arm portion 104 is an elastic stopper. It comes into contact with 14 from above and stops at the origin position, and the claw portion 103 engages with the half latch engaging portion 92 of the latch 9.

Further, when the latch 9 rotates from the half latch position shown in FIG. 8 toward the full latch position (counterclockwise in FIG. 8), the latch 9 is between the half latch position and the full latch position as shown in FIG. When in the position, the pole 10 is forcibly rotated clockwise from the origin position against the urging force of the pole spring 13 by sliding the outer peripheral edge in front of the full latch engaging portion 91 of the latch 9. , The rotating arm portion 104 is separated from the elastic stopper 14.

Then, as shown in FIG. 10, when the latch 9 reaches the full latch position, the pole 10 is rotated toward the origin position by the urging force of the pole spring 13, and the rotating arm portion 104 is an elastic stopper 14. The claw portion 103 engages with the full latch engaging portion 91 of the latch 9 while abutting from above and stopping at the origin position. As a result, the door D is held in the fully closed position.

As described above, in the automobile door latch device 1 of the present embodiment, the rotating arm portion 104 integrally provided on the pole 10 is projected from the opening 67 provided in the body 6 toward the back surface side of the body 6 and the body. By fixing the elastic stopper 14 to the stopper support portion 86 provided on the back plate 8 fixed to the back surface of the body 6, a space for arranging the elastic stopper 14 in the accommodating portion 62 of the body 6 is secured as in the prior art. Therefore, it is possible to reduce the size of the body 6 and, by extension, the size of the entire automobile door latch device 1.

Further, since the stopper support portion 86 to which the elastic stopper 14 is fixed is provided on the leg portion 85 which is fastened and fixed to the back surface of the cover plate 7 by the bolt 2C to improve the rigidity and the position accuracy, the pole 10 Can reliably stop the pole 10 at the origin position when it comes into contact with the elastic stopper 14.

Further, by fixing the elastic stopper 14 to the stopper support portion 86 protruding from the leg portion 85 toward the wall portion 61 of the body 6, the wall portion 61 prevents the elastic stopper 14 from falling off from the stopper support portion 86. Can be stopped.

Although one embodiment of the present invention has been described above, the present invention is not limited to one embodiment, and various modifications and variations to the present embodiment are made without departing from the gist of the present invention. It is possible to make changes.

1 Automotive door latch device 2A, 2B, 2C Bolt 3 Mating assembly 4 Operation assembly 5 Casing 6 Body 60 Cable support 61 Wall 62 Accommodation 63 Striker entry groove 63a Vampire bar assembly hole 64 Latch shaft hole 65 Lever shaft hole 66 Penetration Hole 67 Opening 68 Shaft 69 Support 7 Cover Plate 71 Notch 72 Latch Shaft Hole 73 1st Pole Shaft Hole 74 Screw Hole 75 Through Hole 75a Circular Part 76 Shaft Hole 8 Back Plate 81 Latch Shaft Hole 82 2nd Pole Shaft Hole 83 Lever Shaft Hole 84 Shaft Hole 85 Leg 85a Bent 86 Stopper Support 87 Screw Hole 88 Retaining 9 Latch 91 Full Latch Engagement 92 Half Latch Engagement 93 Engagement Groove 94 Shaft Hole 10 Pole 101 1st Axis Part 102 Second shaft part 103 Claw part 104 Rotating arm part 104a Transmission part 105 Hook part 11 Bum para bar 12 Latch spring 13 Pole spring 13a Coil part 13b One end 13c The other end 14 Elastic stopper 15 First outside lever 16 Second Outside lever 17 Lever spring 18 Latch shaft 19 Lever shaft 20 Outer tube 21 Inner cable 21a Terminal part

Claims (6)

The body fixed to the door and
A cover plate fixed to the surface side of the body and
A back plate fixed to the back side of the body and
A latch that is rotatably pivotally supported in the accommodating portion between the body and the cover plate and can engage the striker on the vehicle body side when the door is closed.
The first shaft portion provided at one end is pivotally supported by the first shaft hole provided in the cover plate, and the second shaft portion provided at the other end is pivotally supported by the second shaft hole provided in the back plate. By being supported, a pole that can engage with the latch that meshes with the striker,
A spring that urges the pole to engage the latch in the engaging direction,
It is provided with an elastic stopper that stops the pole at the origin position where it engages with the latch when the pole comes into contact with the pole.
The back plate has a stopper support portion located on the back surface side of the body.
The elastic stopper is on the back surface side of the body and is fixed to the stopper support portion.
The pole has a claw portion that can be engaged with the latch in the accommodating portion by the urging force of the spring, and a rotating arm portion that projects to the back surface side of the body through an opening provided in the body. A door latch device for automobiles, wherein the rotating arm portion comes into contact with the elastic stopper to stop at the origin position. The claim is characterized in that the elastic stopper is arranged in a region between the first shaft portion and the second shaft portion of the pole in a side cross-sectional view perpendicular to the rotation axis direction of the pole. Item 1. The automobile door latch device according to item 1. The back plate has legs that are bent toward the cover plate from the vicinity of the second shaft hole in parallel with the rotation axis direction of the pole.
The automobile door latch device according to claim 1 or 2, wherein the stopper support portion is provided on the leg portion. The automobile door latch according to claim 3, wherein the tip end portion of the leg portion contacts the back surface of the cover plate through the opening of the body and is fixed to the back surface of the cover plate by a bolt. apparatus. The stopper support portion projects from the leg portion in a direction orthogonal to the rotation axis direction of the pole.
The automobile door latch device according to claim 3 or 4, wherein the elastic stopper is fitted and fixed to the stopper support portion from a direction orthogonal to the rotation axis direction. The automobile door latch device according to claim 5, wherein the body has a wall portion that faces the end face of the elastic stopper.

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