JP2001271539A - Door lock device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely ensure the rotation of a ratchet even when a stopper rubber is lifted from an advancing groove in a door lock device for a vehicle in which the stopper rubber relaxing an impact by abutting against a striker is fitted elastically to the inner end of the advancing groove so that one surface of the stopper rubber is faced oppositely to a latch and the ratchet under the state in which the ratchet is engaged with the latch. SOLUTION: A section 68a oppositely faced to the ratchet 46 under the state, in which the ratchet 46 is engaged with the latch 45, in one surface 68 of the stopper rubber 65 is formed in height lower than other sections.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch capable of rotating in a door closing direction by engagement with the striker in a casing having an entrance groove for entering a striker on the vehicle body side, and a latch related to the latch. A ratchet, which is spring-biased in the direction of engagement, is supported so as to be rotatable about axes parallel to each other, and a stopper rubber that abuts against the striker to reduce impact is engaged with the latch and the latch. The present invention relates to a vehicle door lock device that is resiliently fitted to an inner end of the entrance groove so that one surface of the stopper rubber faces the ratchet in a state of being closed.

[0002]

2. Description of the Related Art Conventionally, such a door lock device is already well known, for example, from Japanese Patent No. 2558530.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
The stopper rubber is slightly press-fitted into the inner end of the entry groove,
It is fitted and is fixed to the casing only by the elastic force. For this reason, the stopper rubber may rise from the approach groove while the striker collides with the stopper rubber many times.

When the stopper rubber comes into contact with only the latch due to the floating, the latch is driven by the striker. Therefore, even if the stopper rubber slightly touches, the rotation of the latch is not largely affected. But,
When the stopper rubber comes into contact with the ratchet, the force acting on the ratchet in the direction of engaging with the latch is only a spring force. Therefore, the frictional force coming into contact with the stopper rubber hinders the rotation of the ratchet, and the engagement with the latch is prevented. Can be difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a vehicle door lock device capable of reliably guaranteeing rotation of a ratchet even when a stopper rubber rises from an entrance groove. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a casing having an entrance groove for entering a striker on a vehicle body side, the casing being turned in a door closing direction by engagement with the striker. A stopper rubber that supports a latch that is enabled and a ratchet that is spring-biased in a direction to engage with the latch so as to be rotatable about mutually parallel axes, and abuts on the striker to reduce an impact. The door lock device for a vehicle, which is resiliently fitted to an inner end of the entrance groove so that one surface of the stopper rubber faces the latch and the ratchet engaged with the latch, A portion of the one surface of the stopper rubber facing the ratchet in a state of being engaged with the latch is formed to be lower than other portions.

According to such a configuration, when one surface of the stopper rubber comes into contact with the latch, the stopper rubber is prevented from floating further, and in that state, the one surface of the stopper rubber that is engaged with the latch is prevented. A gap can be reliably secured between the portion facing the ratchet and the stopper rubber, and rotation of the ratchet can be reliably ensured.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

1 to 20 show an embodiment of the present invention. FIG. 1 is a side view of a vehicle, and FIG. 2 is a door lock device for a rear side door along a line 2-2 in FIG. FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, and FIG.
FIG. 5 is an enlarged sectional view of the door lock device taken along the line -4, FIG. 5 is a view taken in the direction of arrow 5 in FIG.
Figure showing the state where the latch and ratchet have been removed from
7 is a view taken in the direction of arrow 7 in FIG. 4, FIG. 8 is a sectional view taken along line 8-8 in FIG.
9 is an enlarged sectional view taken along line 9-9 of FIG. 6, and FIG.
FIG. 11 is a sectional view corresponding to FIG. 8 in a state in which the cover is being assembled to the casing, and FIG. 12 is an exploded view of the cover, the support plate, the vehicle interior operating force input means, and the child lock mechanism. FIG. 13 is a perspective view of FIG.
FIG. 14 is a cross-sectional view showing a state before the support plate is attached to the cover, FIG. 15 is a perspective view of the rivet, and FIG. 16 is a child lock mechanism in an unlocked state and a vehicle interior operating force input. 17 is a diagram corresponding to FIG. 16 in an operation force input state, FIG. 18 is a diagram illustrating a child lock mechanism and a vehicle interior operation force input unit in a locked state, and FIG. 19 is a diagram illustrating an operation force input state. FIG. 20 is a sectional view taken along line 20-20 of FIG.

Referring to FIG. 1, a windshield GF that can be moved up and down is provided on both front sides of a vehicle body 20 of a passenger vehicle V.
One end of a pair of left and right front side doors DF each provided with a rotatable pivot, and a vertically movable window glass GR (a pillar (not shown)) in the front-rear direction of the vehicle body 20. One ends of a pair of left and right rear side doors DR provided for each are rotatably supported. Door lock devices LF for maintaining the closed state of the front side doors DF are provided at the other ends of the front side doors DF, respectively, and rear ends are provided at the other end of the rear side doors DR. Door lock devices LR for maintaining the closed state of the side doors DR are provided respectively.

2 and 3, a glass sash 23 is provided in the rear side door DR, and a door glass run made of an elastic material such as rubber held by the glass sash 23 is provided. According to 24, wind glass G
R is guided up and down. The inner panel 25 of the rear side door DR is integrally formed with an end wall portion 25a facing the vehicle body 20 when the rear side door DR is closed. The door lock device LR for the rear side door DR is made of glass. It is coupled to the inner surface of the end wall 25a so as to avoid interference with the sash 23.

Referring to FIGS. 4 to 8 together, a casing 26 of the door lock device LR has a casing main body 29 made of synthetic resin between a front side metal plate 27 and a back side metal plate 28.
Are fastened to the end wall 25a of the inner panel 25. A recess 30 having an open lower end is provided on a surface of the casing main body 29 facing the front metal plate 27. The flat metal plate 27 formed in a flat shape is fitted into the recess 30, and The lower part of the plate 27 projects downward from the lower part of the casing main body 29.

The casing main body 29 includes a front side metal plate 27.
A bulging portion 31 bulging toward the side away from the vehicle is integrally provided, and an entry groove opened in the concave portion 30 for allowing a striker 32 (see FIGS. 5 and 6) fixed to a pillar of the vehicle body 20 to enter. 33 is formed by the bulging portion 31, and the front side metal plate 27 is provided with an opening 34 corresponding to the entrance groove 33.

At the lower part of the casing main body 29, one end is brought into contact with the front side metal plate 27, and the other end is connected to the back side metal plate 2.
A cylindrical boss 35 to be brought into contact with 8 is provided integrally. Thus, the front side metal plate 27 fitted into the concave portion 30, the back side metal plate 28 abutting on the bulging portion 31 and the boss portion 35, and the casing main body 29 sandwiched between the two metal plates 27, 28 are provided. Is a rivet shaft 3 inserted through the boss 35.
6.

Above the bulging portion 31, the casing main body 29 is formed with a flat support surface 29a facing the back metal plate 28, and protrudes from the support surface 29a to contact the back metal plate 28. A cylindrical boss 37 in contact with the boss 37 is integrally provided, and the front metal plate 27, the casing main body 29, and the back metal plate 28 are integrally connected by a rivet shaft 38 penetrating the boss 37. The bulging portion 31
At the lower part of the base, an overhanging support portion 39 projecting downward is integrally connected. The front side metal plate 27, the casing main body 29 and the back side metal plate 28 are integrally formed by a rivet shaft 40 penetrating the overhanging support portion 39. Be combined.

In this manner, the front metal plate 27, the back metal plate 28 and the casing main body 29 are connected to each rivet shaft 3
6, 38, 40, the casing main body 29 is sandwiched between the front side metal plate 27 and the back side metal plate 28 so that the casing 26 is formed.

A pair of screw holes 4 is formed in the upper part of the front side metal plate 27.
Are provided, and a single screw hole 42 is provided below the front side metal plate 27 at a portion protruding downward from the casing main body 29. The front side metal plate 27, that is, the casing 26 is fastened to the end wall portion 25a of the inner panel 25 in the rear side door DR by bolts (not shown) screwed into the screw holes 41,. Become.

Two screw holes 41 in the upper part of the front side metal plate 27
The casing main body 29 is integrally provided with storage cylinder portions 43, 43 formed in a bottomed cylindrical shape to accommodate bolts screwed into the two screw holes 41.

A latch 45 is inserted between the front side metal plate 27 of the casing 26 and the casing main body 29, and the latch 45 is rotatably supported by the rivet shaft 38.
Further, between the front side metal plate 27 and the overhanging support portion 39, the ratchet 46 and the ratchet lever 4 which are overlapped with each other are provided.
The ratchet 46 and the ratchet lever 47 are rotatably supported by a common rivet shaft 40. That is, while the latch 45 is rotatably supported by the casing 26 above the entry groove 33, the ratchet 46 and the ratchet lever 47 are
Are rotatably supported by the casing 26 below the entry groove 33 so as to sandwich the entry groove 33 therebetween. Moreover, both rivet shafts 38 and 40 have parallel axes,
The latch 45, the ratchet 46, and the ratchet lever 47 are rotatable around mutually parallel axes.

Referring also to FIG. 9, the latch 45 is formed by covering most of a latch main body 48 made of metal with a coating material 49 made of synthetic resin.
The surface facing the casing main body 29 has a latch main body 48.
And a pin 50 integral with the projection. On the other hand, the casing main body 29 has an arc portion 5 formed in an arc around the rotation axis of the latch 45, that is, the axis of the rivet shaft 38.
A storage groove 51 having a part 1a is provided so as to face the latch 45, and the pin 50 is inserted into the storage groove 51.

A coil spring 52 is housed in the housing groove 51, and the coil spring 52 is contracted between one end of the housing groove 51 and the pin 50. As a result, the latch 45
It is urged to rotate in the opening direction (clockwise direction in FIGS. 5 and 6). The rotation end of the latch 45 in the door opening direction is regulated by the pin 50 abutting on the other end of the storage groove 52.

The storage groove 5 is provided at at least one of the two side opening edges at the longitudinal middle portion of the storage groove 51, for example, the inner side opening edge of the both side opening edges of the arc portion 51a provided in the storage groove 51.
A projection 53 is provided to partially reduce the width of the opening end of the projection 1. The protrusion 53 allows the coil spring 52 to be housed in the housing groove 51 by partially deforming the coil spring 52 when the coil spring 52 is housed in the housing groove 51.
This function prevents the coil spring 52 once housed in the housing from jumping out of the housing groove 51.

By the way, the projection 53 is an undercut when the casing main body 29 is molded.
A hole 44 formed by removing a mold (not shown) that forms the rear side of the projection 53 is formed at the bottom of the storage groove 51 at a portion corresponding to the projection 53.

An outer peripheral portion of the latch 45 has an engaging groove 54 for engaging the striker 32 which has entered the entrance groove 33 when the latch 45 is at the pivoting end in the door opening direction. A full engagement step 55 formed by exposing a part thereof and a half engagement step 56 formed by exposing a part of the latch main body 48 are provided.

The ratchet 46 is also formed by covering a major part of a ratchet main body 57 made of metal with a covering material 58 made of a synthetic resin. The ratchet 46 has an engagement arm portion 59 protruding toward the latch 45. The engaging arm 59 is provided integrally with a locking surface 60 that can be engaged with the full engagement step 55 and the half engagement step 56 of the latch 45. It is formed so that a part is exposed.

The ratchet lever 47, which can rotate integrally with the ratchet 46 and is engaged with and connected to the ratchet 46, is formed of a synthetic resin.
It is rotatably supported by a rivet shaft 40 common to the ratchet 46 so as to be sandwiched therebetween. In addition, the ratchet lever 47 has a pair of engaging pins 61 that engage with the ratchet 46 in order to prevent relative rotation with the ratchet 46.
61 are integrally provided. That is, the ratchet lever 4
Numeral 7 is arranged to be coaxial with the ratchet 46 and to rotate integrally with the ratchet 46.

A boss 3 having a rivet shaft 36 inserted between the casing main body 29 and the ratchet lever 47 is provided.
5 is provided, and the ratchet 46 that rotates integrally with the ratchet lever 47 is engaged with the latch 45 by the spring force of the torsion spring 62 (the counterclockwise direction in FIGS. 5 and 6). ).

A rotating end of the ratchet 46, which rotates integrally with the ratchet lever 47, in a direction in which the latch 45 engages with the latch 45, is provided with an elastic stopper 63 provided on the ratchet 46.
Is regulated by contacting the lower end of the casing main body 29. The elastic stopper 63 is formed integrally with the covering material 58 of the ratchet 46 so as to protrude from the ratchet 46 in a direction parallel to the rotation axis of the ratchet 46, and has elasticity so that the casing main body has elasticity. 29 is in contact with the lower end.

Further, the ratchet lever 47 is provided with an engagement arm 47a for supporting the elastic stopper 63 from the side opposite to the lower end of the casing main body 29.

When the latch 45 is at the pivot end in the door opening direction, the outer periphery of the ratchet 46 is in contact with the outer periphery of the half engagement step 56 of the latch 45, and the striker 32 that has entered the entry groove 33 When the latch 45 is pushed and the latch 45 rotates in the door closing direction (counterclockwise in FIGS. 5 and 6), the striker 32 is engaged with the engagement groove 64, and the outer periphery of the ratchet 46 is half-engaged. The contact position is changed from the outer periphery of the portion 56 to the outer periphery of the full engagement step 55. At this time, the locking surface 61 of the ratchet 46 is engaged with the half engagement step 56 to maintain the rear side door DR in the half-door state. When the striker 32 engaged with the engagement groove 64 further moves inward in the approach groove 33, the latch 45 further rotates in the door closing direction, and slides on the outer periphery of the full engagement step 55. The ratchet 46 is engaged with the locking surface 61 with the full engagement step 55. Thus, the full engagement step 5 of the locking surface 61
5, the rear side door DR is locked in a completely closed state.

The casing main body 29 has a tongue piece 6 for resiliently abutting the striker 32 entering the entry groove 33 from the side and braking the entry of the striker 32.
4 are integrally provided so as to extend from the outer end opening side of the entrance groove 33 to the inner end side.

At the inner end of the entry groove 33, a stopper rubber 65 for relieving impact by coming into contact with the striker 32 entering the entry groove 33 is resiliently fitted and fitted from the front side metal plate 27 side. The rubber 65 is formed in a substantially J shape so as to hold the tongue piece 64.

In FIG. 10, the tip of the tongue piece 64 integrally provided in the casing main body 29 has a front side in the fitting direction of the stopper rubber 65 into the entry groove 33, that is, the back side metal plate 2
An engagement step 66 facing the side 8 is provided. On the other hand, the stopper rubber 65 has an engagement claw portion 6 which engages with the engagement step portion 66 when the stopper rubber 65 is fitted into the approach groove 33.
7 is provided integrally, and the stopper rubber 65 is resiliently engaged with the engagement step 66 at the inner end of the approach groove 33.
Mated.

One surface 68 of the stopper rubber 65 resiliently and fitted to the inner end of the entry groove 33 faces the latch 45 and is engaged with the latch 45.
, But the latch 45 of the one surface 68
68a opposed to the ratchet 46 in a state engaged with
Are formed lower than other portions.

As described above, the impact is mitigated by bringing the striker 32 into contact with the stopper rubber 65. When the striker 32 enters the entrance groove 33 so as to make contact with the stopper rubber 65, The latch 45 pushed by the striker 32 may rotate further in the door closing direction than the full latch position, and the impact at that time has a rotation axis of the latch 45, that is, an axis parallel to the boss 37. It is absorbed by a damper 70 provided between the boss 69 provided on the casing main body 29 and the latch 45.

The boss 69 is formed in a cylindrical shape having an outer cylinder 69a and an inner cylinder 69b connected to the outer cylinder 69a at a plurality of positions in the circumferential direction. A part of the portion 69b is fitted in the support hole 71 provided in the front side metal plate 27 to be supported by the front side metal plate 27.

On the other hand, the damper 70 is formed by providing a plurality of through-holes or a plurality of concave portions opened on both sides in a portion where the coating material 49 constituting the latch 45 is expanded. When the lever 45 is further rotated in the door closing direction than the full latch position, the outer periphery of the boss portion 69, that is, the outer periphery of the outer cylindrical portion 69a can be abutted.

An open lever 74 is supported by the casing 26 so as to rotate in response to input of a door opening operation force. This open lever 74 extends long in the direction along the longitudinal direction of the bulging portion 31 above the bulging portion 31 in the casing main body 29, and a middle portion in the longitudinal direction of the open lever 74 is It is rotatably supported by the boss 37 while slidingly contacting the support surface 29a. A torsion spring 75 surrounding the boss 37 is provided between the open lever 74 and the casing main body 29 between the longitudinal middle portion of the open lever 74 and the back metal plate 28. The open lever 74 is rotationally urged clockwise in FIG. 7 by the spring force.

One end 74 of the open lever 74 in the longitudinal direction
a protrudes from the casing 26 so as to be located outside the window glass GR in the rear side door DR, and one end 74a thereof has a rear side door D
The operating force corresponding to the operation of the out handle 76 (see FIG. 1) provided on the outer surface side of R rotates the open lever 74 counterclockwise in FIG. 7 against the spring force of the torsion spring 75. Is input to

The back metal plate 28 side of the casing 26 is covered with a cover 77 made of synthetic resin. The cover 77 includes a cover main portion 77a formed in a box shape with the casing 26 side open, and a base end portion connected to an end of the cover main portion 77a on the opposite side to the glass sash 23 to form an inner panel. And a rising portion 77b extending in a direction away from the end wall portion 25a of the casing 25. The rising portion 77b is resiliently engaged with the casing 26.

The back metal plate 28 is disposed on a plane perpendicular to the axis of rotation of the latch 45 and the ratchet 46. A pair of first engagement portions 78, 78 are provided on the upper edge of the back metal plate 28. Are integrally provided so as to protrude upward, and a second engaging portion 79 which protrudes downward is integrally provided at a lower edge of the back metal plate 28.

Referring to FIG. 11 as well, engaging recesses 80, 80, into which first engaging portions 78, 78 can be inserted and engaged, respectively, are formed in cover main portion 77a of cover 77, An engagement projection 81 that resiliently engages with the joint portion 79 is provided.

The engagement recesses 80, 80 are provided with first engagement portions 78,
The cover 77 with the plug 78 is inserted into the first engagement portions 78 and 7.
It is formed so as to be able to rotate about 8 as a fulcrum. That is, as shown in FIG. 11, the cover 77 having the upper part inclined so as to approach the back side metal plate 28 and the first engagement parts 78, 78 are inserted into the two engagement recesses 80, 80 of the cover 77 from below. In the inserted state, the lower portion of the cover 77 can be rotated so as to approach the rear metal plate 28. In addition, the engagement projection 81 is provided with the second engagement portion in response to the lower portion of the cover 77 in a state where the first engagement portions 78 are engaged with the engagement recesses 80, 80 approaching the back side metal plate 28. A lower portion of the cover main portion 77a is formed so as to resiliently engage with 79.

Further, a single screw hole 8 is formed in the rear metal plate 28.
The cover 77 is provided in a state where the first engaging portions 78 and 78 are engaged with the engaging concave portions 80 and the engaging protrusion 81 is elastically engaged with the second engaging portion 79. A screw member 83 screwed into the screw hole 82 is inserted into and engaged with the cover main portion 77a.

Referring also to FIG. 12, the cover 77
, A metal supporting plate 84 is attached so as to face the rising portion 77b of the cover 77. The support plate 84 has one end in contact with the rear metal plate 28 of the casing 26 and the bulging portion 31 of the casing main body 29 to cover the support 77.
Of the supporting plate 8b.
An engaging plate 84a, which can contact and engage with the outer surface of the leading end of the rising portion 77b, is integrally connected to the other end of the fourth member 4 so as to be bent at a right angle. Moreover, a pair of rectangular engaging holes 85, 85 are provided in the engaging plate portion 84a, and the engaging holes 85, 85 are formed on the outer surface of the leading end of the rising portion 77b.
Engaging claws 86, 86 which resiliently engage with the projection 85 are provided.

At one end of the support plate 84, a leg 88 projecting toward the rising portion 77b of the cover 77 is provided, and at the rising portion 77b, a fitting hole 89 for fitting the leg 88 is provided. Can be Further, the back side metal plate 28 is integrally provided with a support plate portion 28a that comes into contact with the inner surface on one end side of the support plate 84. One end of the support plate 84 is
8a is fastened by a screw member 87.

An in-vehicle operating force input means for transmitting a door opening operation force corresponding to an opening operation of the rear side door DR inside the vehicle to the open lever 74 between the rising portion 77b of the cover 77 and the support plate 84. 90 are provided.

13 and 14, the in-vehicle operating force input means 90 includes a first input lever 91 capable of inputting a door opening operation force and the open lever 74.
And a second input lever 92 connected to the other end of the first input lever 91 and capable of switching between connection and disconnection with the first input lever 91.

The first and second input levers 91 and 92 are
The open lever 74 is commonly rotatably supported by a synthetic resin rivet 93 having an axis perpendicular to the rotation axis of the open lever 74 and having one end resiliently engaged with the support plate 84.

Referring also to FIG. 15, the rivet 93 is formed by forming engaging recesses 94, 94 between a cylindrical rivet main portion 93a and one end of the rivet main portion 93a. A pair of resilient engaging portions 93b, 93b provided at one end of the rivet 93a, a flange portion 93c extending radially outward from an intermediate portion of the rivet main portion 93a, and a pair of first portions connected to the flange portion 93c. The spring parts 93d, 93d and a plurality of second spring parts 93e, 93 connected to the other end of the rivet main part 93a.
e are integrally formed, and are basically formed in a cylindrical shape.

The two projecting engagement portions 93b, 93b are
4 is bent and inserted in a direction approaching each other to the engagement hole 95 provided in the rivet main body 93 a, and one end of the rivet main portion 93 a is attached to the support plate 8.
The rivets 93 are inserted into the engagement holes 95 by inserting the two resilient engagement portions 93b and 93b into the engagement holes 95 until the engagement recesses 94 and 94 are engaged with the periphery of the engagement holes 95. One end is resiliently engaged with the support plate 84.

The second input lever 92 is rotatably supported by the rivet main portion 93a at one end side of the flange portion 93c, and the first resilient portions 93d, 93d are connected to the second input lever 92. It is formed so as to exert a resiliency such as pressing against the support plate 84.

The first input lever 91 is rotatably supported by the rivet main portion 93a at the other end side from the flange portion 93c. The second projecting portions 93e, 93e... The lever 91 is formed so as to exert an elastic force such as pressing against the flange 93c.

Accordingly, the first and second input levers 91 and 92 of the inboard operating force input means 90 are rotatably supported by a synthetic resin rivet 93 having one end elastically engaged with the support plate 84. Will be.

In the rising portion 77b of the cover 77,
A shaft 96 fitted into the rivet 93 when the support plate 84 and the cover 77 are connected is integrally provided. As a result, the rivet 93 is supported at both ends by the support plate 84 and the cover 77 when the support plate 84 and the cover 77 are connected.
Is reliably maintained in the state of resilient engagement with the support plate 84.

Referring to FIGS. 16 and 17, the first input lever 91 is connected to an inside handle (not shown) provided on the inner surface side of the rear side door DR. Figure 1 according to the operation of
6 and counterclockwise in FIG. On the other hand, the second
The input lever 92 is connected to the open lever 74, and presses against an input plate portion 74b provided on the open lever 74 and presses the input lever 92a counterclockwise in FIGS. Is provided on the second input lever 92.

The second input lever 92 is integrally provided with an arm portion 92b extending in the radial direction of the rivet 93. The arm portion 92b has an elongated hole 98 extending in the radial direction of the rivet 93. And a circular hole 99 having a diameter larger than the width of the elongated hole 98 and connected to the outer end of the elongated hole 98.

A locking piece 100 movable along an elongated hole 98 is mounted on the arm portion 92b of the second input lever 92. The locking piece 100 is made of a synthetic resin in a cylindrical shape having a diameter that can be inserted into the circular hole 99, and is formed on the outer periphery of the locking piece 100 at both side edges of the elongated hole 98. A matching annular groove 101 is provided.

On the other hand, the first input lever 91 can be engaged with the locking piece 100 moving to a position close to the rivet 93 along the elongated hole 98 from the counterclockwise direction in FIGS. However, when the locking piece 100 is moved to a position away from the rivet 93 along the elongated hole 98, the locking is performed even if the first input lever 91 is rotated counterclockwise in FIGS. An engagement arm 91a that swings without engaging the piece 100 is provided.

Therefore, in a state where the locking piece 100 is moved to a position close to the rivet 93 along the elongated hole 98, the first input lever 91 is operated in accordance with the operation of the inside handle on the inner side of the rear side door DR. FIG. 16 and FIG.
7 rotates counterclockwise, the engaging arm 91a
1 and the second input lever 92 is
7, the input plate portion 74b of the open lever 74 is pressed by the pressing portion 92a, and the open lever 7 is rotated.
4, the opening operation force acts.

On the other hand, as shown in FIGS. 18 and 19,
When the locking piece 100 is at a position separated from the rivet 93 along the elongated hole 98, even if the first input lever 91 rotates counterclockwise in FIGS. 18 and 19 in response to the operation of the inside handle. , The engaging arm 91a is
18 and 19, the second input lever 92 does not rotate counterclockwise in FIGS.
Since the input plate portion 74b of the open lever 74 is also not pressed by the pressing portion 92a, no opening operation force acts on the open lever 74.

The child lock mechanism 1 is provided on the support plate 84.
04 is attached, and the child lock mechanism 104
The rivet 9 is inserted into the locking piece 100 along the elongated hole 98.
3 is switched between an unlocked state in which it is moved to a position close to 3 and a locked state in which it is moved to a position separated from the rivet 93 along the elongated hole 98. When the child in the rear seat erroneously opens the inside handle, the opening lever 74 is prevented from transmitting the opening operation force.

The child lock mechanism 104 is made of synthetic resin and is supported on the support plate 84 so as to be rotatable about the rotation axis of the first and second input levers 91 and 92, that is, the axis parallel to the axis of the rivet 93. Child lever 105
And a child drink 106 made of synthetic resin having one end connected to the child lever 105 and the other end formed integrally with the locking piece 100.

In FIG. 20, the child lever 105
Is supported by the support plate 84 so as to be disposed between the inner panel 25 of the rear side door DR and the support plate 84. The shaft 107 provided integrally with the child lever 105 is moved around its axis. A support hole 108 is provided in the support plate 84 so that the support plate 84 can be rotated and inserted.
At a plurality of locations spaced apart in the circumferential direction of the shaft 107,
Engaging claws 109 are provided on the inner surface side of the support plate 84 so as to resiliently engage around the support hole 108. Therefore,
The child lever 105 is mounted on the support plate 8
4 is rotatably supported by the support plate 84 simply by being inserted into the support hole 108 from the outer surface of the support plate 4.

The child lever 105 integrally has arms 105a and 105b extending on both sides along one diameter line of the shaft 107. The child lever 105 has a connecting pin 110 provided integrally with the tip of one arm 105a. One end of the child drink 106 disposed on the outer surface side of the support plate 84 is rotatably connected. A regulating pin 111 projecting toward the support plate 84 is integrally provided on the base end side of the arm 105a. The support plate 84 is provided with a restriction hole 112 into which the ends of the connection pin 110 and the restriction pin 111 are inserted. The restriction hole 112 is provided in the child lever 1.
05 is the unlock position (the position in FIGS. 16 and 17)
When the child lever 105 is rotated between the lock position (the position shown in FIGS. 18 and 19), the rotation end of the child lever 105 is restricted by contacting the restriction pin 111. The connection pin 11
It is formed to allow zero rotation.

Incidentally, while the child drink 106 is arranged on the outer surface side of the support plate 84, the second input lever 92 is arranged on the inner surface side of the support plate 84.
The other end of the locking piece 100, one end of which is connected to the other end of the child drink 106 at a right angle and integrally therewith, must pass through the support plate 84 and be disposed inside the support plate 84. The locking piece 10 accompanying the operation of the child lock mechanism 104 and the rotation of the second input lever 92 is provided on the plate 84.
A through hole 113 is provided to allow the locking piece 100 to penetrate while allowing zero movement.

On the other hand, at the distal end of the other arm 105b, a base end of a pin-shaped operating portion 114 is provided at a right angle and integrally with the arm 105b. Protrudes from the rear inner surface of the rear side door DR when attached to the rear side door DR. Moreover, in order to prevent a child in the rear seat from operating the operation unit 114 when the rear side door DR is closed, the distal end of the operation unit 114 is a member on the vehicle body 20 side when the rear side door DR is closed. It is placed in a position where it will be hidden by.

When the rear side door DR is open, the operation section 114 is operated to operate the child lever 10.
5 can be pivoted between an unlocked position and a locked position.

Further, the child lever 105 is integrally provided with an arm portion 105c extending in a direction substantially perpendicular to the two arm portions 105a and 105b.
A moderation pin 115 is integrally provided on 5c so as to project toward the support plate 84. The support plate 84 protrudes in a triangular shape toward the moderation pin 115 at a position corresponding to the moderation pin 115. A protrusion 116 is provided.

The rotation of the child lever 105 between the unlocked position and the locked position by the operation of the operation portion 114 is performed such that the detent pin 115 gets over the protrusion 116, and the child lever 105 is rotated.
This gives a sense of moderation to the rotation operation between the unlock position and the lock position.

Such a child lock mechanism 104
Are formed so as not to protrude from the space occupied by the support plate 84, and the child drink 10
The swing range of 6 is determined by the axis of the rivet 93 and the connecting pin 1.
It is set in a range equally distributed on both sides of a straight line connecting the ten axes.

The cover 77 has an open link 117 connected to the open lever 74 and an operating force corresponding to the operation of the open lever 74 in response to the input of the door opening operation force. A locking lever 118 connected to the other end of the open link 117 and a knob lever 119 coaxially connected to the locking lever 118 for switching between a state in which transmission to the ratchet 46 is enabled and a state in which transmission is disabled. Are supported, and the actuator 120 connected to the locking lever 118 is fixed to the cover 77. Further, the knob lever 119 is provided with a connection hole 121 for connecting a transmission means such as a rod connected to a lock knob (not shown) provided on the inner surface side of the rear side door DR.

When the locking lever 118 is rotated by the power from the actuator 120 or the manual operation of the lock knob, the operating force corresponding to the operation of the open lever 74 in response to the input of the door opening operation force. Open link 117 to ratchet lever 47
It is possible to switch between a state where transmission to the ratchet 46 is enabled and a state where transmission is disabled.

That is, one end of the open link 117 is rotatably connected to the open lever 74, and the locking lever 1 is connected to the other end of the open link 117.
Reference numeral 18 denotes an unlocked position in which the engagement arm 47a of the ratchet lever 47 can be pushed so that the ratchet 46 rotates in a direction of releasing the engagement with the latch 45, and a position shifted from the engagement arm 47a. The position of the open link 117 is changed by switching to the lock position in which the swing operation is performed. When the open link 117 is in the lock position, the door opening operation force is input to the open link 117 from the open lever 74. Also striker 3
The state of engagement of the latch 45 with 2 is maintained.

Next, the operation of this embodiment will be described. The latch 4 supported on the casing 26 by being able to rotate in the door closing direction by engagement with the striker 32 is described.
5, a housing groove 51 is provided in the casing main body 29 of the casing 26 for housing a coil spring 52 that resiliently urges the latch 45 in the door opening direction. At least one of the opening edges on both sides at the intermediate portion is provided with a projection 53 that partially reduces the width of the opening end of the storage groove 51 to prevent the coil spring 52 from detaching from the storage groove 51. .

The protrusion 53 partially reduces the width of the open end, so that the coil spring 52
When storing the coil spring 5, a storing operation for deforming a part of the coil spring 52 is required,
After the 2 is once stored in the storage groove 51, the projection 53 comes into contact with an intermediate portion of the coil spring 52, so that the coil spring 52 is prevented from jumping out of the storage groove 51. Therefore, the work of assembling the coil spring 52 and the latch 45 does not need to be particularly carefully performed, and the efficiency of the assembling work can be improved.

Further, the storage groove 51 is provided in the casing main body 29 made of synthetic resin and has an arc portion 51a formed in an arc shape with the rotation axis of the latch 45 as a center. Numeral 53 protrudes from an inner opening edge of both sides of the arc portion 51a. For this reason, the expansion and contraction operation of the coil spring 52 can be smoothed. That is, since the projection 53 is undercut when the casing main body 29 is molded, a mold mating surface is formed on the side surface of the storage groove 51. In the case where the projection 53 is provided in a protruding manner, the coil spring 52 that slides on the outer surface of the storage groove 51 comes into contact with the mold mating surface due to the compression, and the mold mating surface has irregularities. In this case, the expansion and contraction of the coil spring 52 is adversely affected. On the other hand, in the case where the projection is provided on the inner opening edge of the opening edges on both sides of the arc portion 51a, the coil spring 52 hardly comes into contact with the mold mating surface during expansion / contraction, and the mold mating surface has irregularities. This does not adversely affect the expansion and contraction of the coil spring 52.

An entrance groove 33 for allowing the striker 32 to enter is provided in the casing 26.
The stopper rubber 65 for relieving the impact by abutting the stopper rubber is resiliently and fitted to the inner end of the approach groove 33, but the stopper rubber 65 faces the front side in the fitting direction of the stopper rubber 65 into the approach groove 33. A joint portion 66 is provided on the casing 26, and the stopper rubber 65 is resiliently fitted to the inner end of the approach groove 33 so as to engage with the engagement step portion 66.

Therefore, even if the striker 32 collides with the stopper rubber 65 many times, it is possible to prevent the stopper rubber 65 from floating from the entry groove 33 as much as possible, and the stopper rubber 65 comes into contact with the latch 45 and Latch 45
It is possible to reduce the possibility of hindering the operation of.

The stopper rubber 65 is connected to the latch 45
Is resiliently engaged with the inner end of the approach groove 33 such that the one surface 68 faces the ratchet 46 engaged with the latch 45. The portion 68a facing the ratchet 46 in the state of being engaged with is formed lower than the other portions.

As a result, even if the stopper rubber 65 floats up from the entry groove 33, the stopper rubber 6
The stopper rubber 65 is prevented from further floating when the one surface 68 of the fifth rubber 5 contacts the latch 45, and in this state, the portion of the one surface 68 of the stopper rubber 65 that faces the ratchet 46 engaged with the latch 45. And the stopper rubber 65 can be reliably secured a gap. Therefore, the rotation of the ratchet 46 can be reliably ensured, even though the force acting on the ratchet 46 in the direction of engaging with the latch 45 is only the spring force.

When the striker 32 enters the entrance groove 33 of the casing 26 such that the striker 32 comes into contact with the stopper rubber 65, the latch 45 may further rotate in the door closing direction than the full latch position. A damper 70 for alleviating the shock at the time is provided between the latch 45 and a boss 69 having an axis parallel to the rotation axis of the latch 45 and provided on the casing main body 29 of the casing 26. Therefore, when the latch 45 rotates further in the door closing direction than the full latch position, the shock can be absorbed by the damper 70, and an excellent shock absorbing effect can be obtained.

Further, the damper 70 is made of an elastic material so as to be able to come into contact with the outer periphery of the
5, and the damper 70 can be easily configured.

The casing main body 29 made of synthetic resin
Since the boss portion 69 formed integrally with the boss portion is supported by the front side metal plate 27, the boss portion 69 can be easily formed and the strength of the boss portion 69 can be increased.

The back metal plate 28 side of the casing 26 is covered with a cover 77 made of synthetic resin, and a pair of first engagement portions 78 provided on the upper edge of the back metal plate 28.
Engagement recesses 80, 80 into which the first and second engagement portions 78 can be inserted and engaged respectively
Are provided on the cover 77, and both engagement recesses 80, 80 are
The cover 77 with the engagement portions 78 inserted therein is formed in a shape that can rotate about the first engagement portions 78, 78. Also, a second metal plate provided on the lower edge of the back metal plate 28 is provided.
An engagement protrusion 81 is provided on the cover 77 so as to resiliently engage with the engagement portion 79. Accordingly, it is formed so as to resiliently engage with the second engaging portion 79.

Therefore, when assembling the cover 77 to the casing 26, the first engaging portions 78, 78 are determined by setting the posture of the cover 77 to an inclined posture in which the engaging concave portions 80, 80 are closer to the casing 26. And engagement recesses 80, 8
0 can be engaged with each other while confirming each of them. In this state, by simply rotating the cover 77, the engaging projection 81 can be elastically engaged with the second engaging portion 79. And the cover 77 can be easily resiliently engaged with the casing 26, and the assembling work efficiency can be improved.

Further, the first engaging portion 7 is
8 and 78 are engaged and the engaging projection 81 is
A single screw member 83 that is screwed into the back metal plate 28 is inserted into the cover 77 in a state of being resiliently engaged with the engagement portion 79,
Since the cover 77 is engaged, the cover 77 can be securely fixed to the casing 26.

Between the cover 77 and a metal support plate 84 attached to the cover 77, a rotation according to a door opening operation inside the vehicle is enabled, and an open lever 74 by the rotation is provided. The first and second input levers 91 and 92 of the in-vehicle operating force input means 90 that enable transmission of the door opening operation force to the door are arranged, and the doors from these input levers 91 and 92 to the open lever 74 are arranged. A child lock mechanism 104 capable of blocking transmission of the opening operation force is mounted on the support plate 84. Moreover, both input levers 91 and 92 are rotatably mounted on the support plate 84 before being attached to the cover 77.

Therefore, the child lock mechanism 104 and the input levers 91 and 92 connected to each other are connected to the support plate 8.
4, the unit can be assembled into a unit. When the door lock device DR is assembled, the support plate 84 of the unit may be attached to the cover 77, so that the assembling work can be facilitated.

The input levers 91 and 92 are rotatably supported by a rivet 93 made of synthetic resin having one end elastically engaged with a support plate 84, and fitted to the rivet 93 on the cover 77. Shaft portion 96 is provided integrally. This eliminates the need for complicated staking work as compared with the conventional one using metal rivets, and can improve the assembling work efficiency. In addition, the shaft portion 96 integral with the cover 77 is fitted to the rivet 93,
Is substantially supported at both ends by the support plate 84 and the cover 77, and the input levers 91 and 92 can be supported with sufficient support rigidity.

Further, a rivet 93 basically formed in a cylindrical shape is provided with a flange 93 c extending radially outward from an axially intermediate portion of the rivet 93, and a rivet 93 is provided between the flange 93 c and the support plate 84. Input lever 92 supported by
The first input lever supported by the rivet 93 between the first elastic portion 93d, 93d connected to the flange portion 93c and the flange portion 93c and the cover 77 so that the first input lever can be elastically pressed toward the support plate 84 side. The second locking portions 93e, 93e... Connected to the other end of the rivet 93 are integrally provided with the first locking portion LR so as to be able to resiliently press the pressing portion 91 toward the flange portion 93c. And a pair of input levers 91 and 92 required by the rivet 93 can be commonly and rotatably supported by a single rivet 93, and a displacement of the input levers 91 and 92 along the axial direction of the rivet 93 occurs. To the first and second launchers 93d, 93d; 93e,
93e ... can be suppressed.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible.

For example, the present invention can be applied to a door lock device LF of the front side door DF.

[0094]

As described above, according to the present invention, when one surface of the stopper rubber comes into contact with the latch, the stopper rubber is prevented from further floating, and in this state, the stopper rubber is engaged with the latch on one surface of the stopper rubber. A gap can be reliably secured between the portion facing the ratchet in the fitted state and the stopper rubber, and rotation of the ratchet can be reliably ensured.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle.

FIG. 2 is an enlarged sectional view showing a door lock device for a rear side door along a line 2-2 in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is an enlarged sectional view of the door lock device taken along line 4-4 in FIG. 2;

FIG. 5 is a view as viewed in the direction of arrow 5 in FIG. 4 in a state where the front side metal plate is omitted.

FIG. 6 is a view showing a state where a latch and a ratchet are removed from FIG. 5;

FIG. 7 is a view taken in the direction of arrow 7 in FIG. 4;

8 is a sectional view taken along line 8-8 in FIG. 7;

FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 6;

FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG. 6;

11 is a cross-sectional view corresponding to FIG. 8 in a state where the cover is being assembled to the casing.

FIG. 12 is an exploded perspective view showing a cover, a support plate, a vehicle interior operating force input unit, and a child lock mechanism.

FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG. 3;

FIG. 14 is a sectional view showing a state before the support plate is attached to the cover.

FIG. 15 is a perspective view of a rivet.

FIG. 16 is a diagram showing a child lock mechanism and an in-vehicle operating force input unit in an unlocked state.

FIG. 17 is a diagram corresponding to FIG. 16 in an operation force input state.

FIG. 18 is a view showing a child lock mechanism and a vehicle interior operating force input unit in a locked state.

FIG. 19 is a diagram corresponding to FIG. 18 in an operation force input state.

20 is a sectional view taken along line 20-20 in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 20 ... Body 26 ... Casing 32 ... Striker 33 ... Entry groove 45 ... Latch 46 ... Ratchet 65 ... Stopper rubber 68 ... One surface of stopper rubber 68a ... Stopper Portion of the rubber facing the ratchet LF, LR Door lock device

Claims (1)

[Claims] 1. A casing (26) having an entrance groove (33) through which a striker (32) on the vehicle body (20) side enters.
A latch (45) capable of rotating in the door closing direction by engagement with the striker (32); and a ratchet (46) spring-biased in a direction to engage with the latch (45). The stopper rubber (65) supported so as to be rotatable about axes parallel to each other and abutting against the striker (32) to reduce an impact is provided by the latch (4).
5) and the entrance groove (33) such that one surface (68) of the stopper rubber (65) faces the ratchet (46) engaged with the latch (45).
In the vehicle door lock device which is resiliently fitted to the inner end of the vehicle, the stopper rubber (65) faces the ratchet (46) in a state of being engaged with the latch (45) on one surface (68) of the stopper rubber (65). The door lock device for a vehicle, wherein the portion (68a) is formed lower than other portions.