JP2895722B2 - Child lock mechanism in vehicle door lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child lock mechanism for a vehicle door lock device.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Application No. 2-100734 is known.
(Japanese Utility Model Laid-Open No. 4-59276)
Inner lever 21 that rotates when inner handle is opened
And lock position and unlock position by operating the operation knob 23a.
The child lever 23 and the inner lever 21
Formed from a push lever 22 that can be rotated by rotation of
When the inner lever 21 is rotated with the inner handle,
Push lever 22 rotates and push lever 22 rotates
Child who opens the door by rotating the outer lever when rotated
A locking device is described.

[0003]

The above-mentioned known child
The lock device rotates when the inner handle is opened.
Lock position by operating the lever 21 and the operation knob 23a
And the child lever 23 which shifts to the unlock position,
Push lever 2 that can be rotated by rotation of the Anna lever 21
Because it is formed from two, three parts are required
You. However, as described below, the push lever 22
Saves money and forms a child lock with two parts
can do.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a door lock device attached to a door, which includes an outer handle 10 or
Rotate the ratchet 4 by opening the inner handle 48
An open lever 8 that can be released from the latch 3 , an inner lever 45 that rotates when the inner handle 48 is opened, and
Between the inner lever 45 and the open lever 8, a child lock position and a child unlock position.
The child levers 50 to transition between a locked position provided,
When the child lever 50 is in the unlock position,
The inner lever 45 is directly engaged with the inner lever
The child lever 50 rotates by the rotation of -45 and
The open lever is directly engaged with the open lever 8.
8 is rotated by the rotation of the child lever 50
And so, the inner lever 45 and the non-a locked position
This is a child lock mechanism in a vehicle door lock device in which the child lever 50 does not rotate even when the inner lever 45 is rotated by engagement . Further, in the child lock mechanism of the vehicle door lock device, a back of the door lock device may be provided.
The axis 4 is attached to the bending plate 30 of the back plate 21 of the surface.
6, the inner lever 45 is rotatably mounted,
The child lever 50 and the long hole 51 are provided on the shaft 46.
It can be freely moved between the locked position and the unlocked position
The child lever 50 is connected to the open lever 8.
And a child lock mechanism in a vehicle door lock device provided in engagement with the vehicle door lock device. Further, the child lock mechanism in the vehicle door lock device, before
An elastic projection 58 is provided at the center of the elongated hole 51 to provide a child lock mechanism in a vehicle door lock device. In the child lock mechanism of the vehicle door lock device, the child lever 50
This is a child lock mechanism in a vehicle door lock device in which an operation knob 55 protruding outside is integrally formed . In the child lock mechanism of the vehicle door lock device, the child lever 50
Forming an engagement projection 59 with which the inner lever 45 is engaged
And a child lock mechanism in the vehicle door lock device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a synthetic resin body of a door lock device attached to a rear seat door.
A recess 5 is provided for accommodating the latch 3 which rotates by engaging with the latch 3 and the ratchet 4 which engages with the latch 3 and prevents the latch 3 from rotating in the reverse direction. Reference numeral 6 denotes a guide groove long in the left-right direction into which the striker 2 enters.

At the upper position on the back side of the body 1, the left and right intermediate parts of the open lever 8 which is long on the left and right sides are fixed by the front and rear shaft 7 (the shaft of the ratchet 4) . An engaging portion 9 is formed at one of the left and right ends (left end) of the open lever 8. Reference numeral 10 denotes an outer handle of the rear seat door, and its rotation end 1
1 faces the engaging portion 9. 12 is the outer handle 10
Is the axis on which the shaft is mounted. An arm 13 protruding downward is formed near the shaft 7 of the open lever 8.
3 has an elongated hole 14 extending radially from the shaft 7. An engagement pin 16 provided at the upper end of a vertically long moving rod 15 is engaged with the long hole 14. The engagement pin 16 moves up and down the long hole 14 and moves to the upper end position of the long hole in the locked state and to the lower end position of the long hole in the unlocked state.

A ratchet arm 17 is mounted on the shaft 7. The other end of a connection pin 18 fixed to the ratchet 4 is fixed to one end (upper end) of the ratchet arm 17 and the ratchet arm 17 and the ratchet. 4 is formed so as to rotate integrally therewith, and the other end (lower end) of the ratchet arm 17 is formed with an engagement end 19 facing the engagement pin 16 at the unlock position of the lower end of the long hole 14. When the open lever 8 is rotated to open the door (to the left in FIG. 2) while the engaging pin 16 is in the unlocked state at the lower end of the elongated hole 14, the open lever 8 engages with the elongated hole 14 of the arm 13. Since the engaging pin 16 moves to the right, the ratchet arm 17 is rotated by pushing the engaging end 19, thereby releasing the ratchet 4 from the latch 3 via the connecting pin 18 and opening the door.

[0010] At the lower rear portion of the body 1, FIG.
The lock lever 20 illustrated in FIG. 5 is disposed, and the lock lever 20 is directly fixed to a back plate 21 made of a thin metal plate attached to the back surface of the body 1. The lock lever 20
Is composed of a lever portion 22 and a shaft portion 23, and the lever portion 2
2 and the shaft portion 23 are integrally formed of synthetic resin,
On both sides of the tip of the shaft portion 23, projections 24, 24 projecting in a direction parallel to the lever portion 22 (the direction is not limited) are integrally formed. As shown in FIG. 7, the back plate 21 has a through hole 25 into which the shaft portion 23 is inserted. The shape of the through-hole 25 is such that the shaft portion 23 with the protrusions 24 and 24 is inserted therethrough, so that the shaft portion 23 does not come off when the inserted shaft portion 23 is rotated by about 60 degrees. 24
Notches 27, 27 are formed. Align the protrusion 24 with the notch 27, insert the shaft 23, and then
When rotated, the projection 24 engages with the round hole 26 and cannot come off.

An elastic piece 28 protruding in the direction of the back surface of the back plate 21 is integrally formed at the tip of the projection 24. When the lever 22 is fixed to the back plate 21, the elastic piece 28 elastically contacts the back surface of the back plate 21. Therefore, even if the thickness of the back plate 21 changes and the clearance changes, the lever 22 does not There is no backlash. The same effect can be obtained even if the elastic piece 28 is formed on the contact surface 29 of the lever portion 22 with the back plate 21 so that the elastic piece 28 contacts the surface of the back plate 21.

[0010] As shown in FIGS.
Is bent partly backward (backward direction) to form a bent plate 30, and the lower end of the bent plate 30 has L
The mold relay lever 31 is pivotally supported. One end (upper end) 31a of the relay lever 31 is engaged with a rod 33 reaching the inner lock operation member 32, and the other end (lower end) 31b is connected to the lock lever 2
0 is engaged with the engagement hole 20a formed on the right side. FIG.
Is in an unlocked state. In this state, when the lock operation is performed by pressing the inner lock operation member 32 (sill knob) ,
In FIG. 8, the L-shaped relay lever 31 rotates rightward, so that the lock lever 20 rotates clockwise in FIG. 2 by the other end 31b, and moves the movable rod 15 fixed to the lock lever 20 by the shaft 34 upward.

An arm 35 is formed at the center of the lock lever 20 so as to protrude upward.
6, a projection 37 projecting toward the body 1 is formed .
6) . Reference numeral 38 in FIG. 3 denotes a bulge formed in the body 1 for forming the guide groove 6, and below the bulge 38,
As shown in FIG. 3, an engaging portion 39 facing the protrusion 37 of the arm 35 is formed. The engaging portion 39 has left walls 40 on both left and right sides.
As shown in FIG. 6, the bottom surface 42 has a high ridge line 43 located substantially at the center of the left and right sides, and the left and right sides of the ridge line 43 gradually decrease. When the protrusion 37 moves right and left over the ridge line 43, the protrusion 37 is guided by an inclination and stops against the left and right walls 40 and 41. This eliminates the need for an over-center spring. In FIG. 2, reference numeral 44 denotes a spring that constantly rotates the open lever 8 clockwise.

The arm 35 and the projections 24, 24
The projections 24 are configured so as to be substantially orthogonal to two directions, and even when the lock lever 20 rotates between the locked position and the unlocked position, the protrusion 24 does not overlap with the notch 27. At the upper end of the bent plate 30 of the back plate 21, as shown in FIG.
To support. A rod 49 reaching an inner handle 48 is engaged with one end 47 of the inner lever 45.

In FIG. 9, reference numeral 50 denotes a child lever, and the shaft 46 is inserted into a vertically long hole 51 formed on the left side in FIG.
Through. As shown in FIGS. 10 and 11, an operation knob 55 is integrally formed on the left side of the child lever 50 through the through hole 54 of the door panel 53, and the operation knob 55 is picked up and moved up and down to perform a switching operation. Then, the child lever 50 is moved to one end 57 of the long hole 51 as shown in FIG.
The position is switched between the child lock position where the shaft 46 is located at the other end and the release position where the shaft 46 is located at the other end 56 of the elongated hole 51 as shown in FIG. In FIG. 9, 58 is a child lever 5
Elastic projections that give a sense of articulation when the switching operation is zero.

In FIG . 9, the child lever 5 is shown on the drawing.
An engagement protrusion 59 is formed on the back side of the “0”. The engagement projection 59
When the child lever 50 is at the release position (FIG. 14), the child lever 50 is positioned on the rotation locus of the engagement claw 60 of the inner lever 45 and when the inner lever 45 rotates, the child lever 50 also rotates interlockingly. 50
Is in the child lock position (FIG. 12).
Even if the inner lever 45 rotates out of the rotation locus of 0, the child lever 50 does not rotate. The engaging arm 61 of the child lever 50 faces the right end 62 of the open lever 8 (FIG. 2).

In FIG. 14, the position indicated by the imaginary line a is the child lock position, and the operation knob 55 is the solid line b.
Is in the release position, and the user switches the operation knob 55 within this range. However, as described above, since the child lever 50 at the release position b rotates in conjunction with the rotation of the inner lever 45, when the inner lever 45 is rotated by the door opening operation, the operation knob 55 moves to the solid line position C in FIG. Since the operation knob 55 moves, the through-hole 54 of the door panel 53 on which the operation knob 55 faces is also connected to the operation knob 55 as shown in FIG.
To a shape that can move to c through b. Therefore, when the operation knob 55 is in the release position b, since becomes an intermediate position of the through-hole 54, incorrectly user by Misao
In order not to move the operation knob 55 to the position C side,
A tunnel-shaped cover 64 (FIGS. 10 and 11) is formed in a portion of the through hole 54 corresponding to the position c.

FIG. 16 shows a child lever 50 'of another embodiment. In this embodiment, there is no functional difference, only the switching direction of the child lever 50 'is changed. Fig. 17 shows a child lever 50 "of another embodiment. In this embodiment, the elastic projection 5 is provided.
By changing the shape of 8 ", the smoothness at the time of switching is improved.

FIGS. 18 and 19 show a lock device for a front seat door which is paired with the lock device for a rear seat door described above.
As shown in the figure, the body 1 and the back plate 21, which are main components, have the same shape so that they can be used together, and only a part of the levers needs to be changed, so that the mass production effect becomes more remarkable.

[0018]

When the child lever 50 is in the released (non-child locked) state (FIGS. 8 and 14) and the lock lever 20 is in the unlocked state (the engaging pin 16 is lowered in FIG. 2), the inner handle 48 is opened. When the door is operated, the inner lever 45 is moved about the shaft 46 via the rod 49 in FIGS.
, The engaging claw 60 of the inner lever 45 abuts the engaging protrusion 59 to rotate the child lever 50 together to the left, and the engaging arm 61 of the child lever 50 engages with the right end 62 of the open lever 8. , Open lever 8
Is rotated counterclockwise in FIG. 2 against the elasticity of the spring 44.
Then, the engaging pin 16 engaged with the long hole 14 of the arm 13 of the open lever 8 is moved to the right, so that the engaging end 19 of the ratchet arm 17 is pushed to rotate the ratchet arm 17 counterclockwise, and the connecting pin The ratchet 4 can be released from the latch 3 via 18 to open the door.

Next, by pulling the operating knob 55 which is exposed to the outside from the through hole 54 of the door panel 53, the child lever 50 is switched to the state of FIG. 12 from the state of FIG. 8 (operation knob 55 from the position b a), the shaft 46 moves to one end 57 of the elongated hole 51 over the elastic resistance of the elastic projection 58. In this state, the engagement protrusion 59 of the child lever 50 is engaged with the engagement claw 60 of the inner lever 45.
Since the engagement claw 60 and the engagement protrusion 59 do not engage even when the inner lever 48 is rotated by operating the inner handle 48 as described above, the child lever 50 is rotated. No, so the door cannot be opened. However, even in this state, the open lever 8 can be rotated with the outer handle 10.

The distal end of the engaging arm 61 of the child lever 50 is connected to the upper surface of the bulging portion 38 of the body 1 (in the embodiment, the upper surface of the bulging portion of the back plate 21) as shown in FIG. Since the operation lever 55 is sandwiched between the right end 62 and the lower surface, when the operation knob 55 is picked up and the child lever 50 is switched, the tip of the engagement arm 61 can be used as the center of rotation, and the switching can be performed smoothly.

[0021]

As described above, Japanese Utility Model Application No. 2-100734 has been described.
The child lock device described in the microfilm of No. 4 (Japanese Utility Model Laid-Open No. 59276/1992) does not open the inner handle.
An inner lever 21 rotated by a door operation, and an operation knob 23a
Child moves to locked position and unlocked position by operation of
Rotate by rotating the lever 23 and the inner lever 21
Requires three parts with the push lever 22
You. However, as described below, the push lever 22
Saves money and forms a child lock with two parts
can do. That is, the present invention provides the door lock device attached to the door side with the outer handle 10 or the inner handle.
The ratchet 4 is rotated from the latch 3 by rotating with the door opening operation of 48.
An open lever 8 that can be detached, and an inner lever 45 that rotates by opening the inner handle 48 are provided. A child lock position and a child unlock position are provided between the inner lever 45 and the open lever 8.
And a child lever 50 that shifts between the inner lever and the inner lever when the child lever 50 is in the unlock position.
The inner lever 45 is rotated by directly engaging with the lever 45.
The child lever 50 rotates and the open
The open lever 8 is directly engaged with the
So that it is rotated by the rotation of the child lever 50 ,
In the locked position, the inner lever 45 is disengaged.
Wherein since the child lever 50 also rotates the inner lever 45 is obtained by a child lock mechanism in the configuration the vehicle door lock device so as not to rotate Te, second inner lever 45 and the child lever 50
If there are sheets, child lock can be performed, and there is an effect that two sheets can be used, unlike the known example. Further, in the child lock mechanism, a door on a rear surface of the door lock device is provided.
The bending plate 30 of the backing plate 21
The inner lever 45 is rotatably mounted on the shaft.
46, the child lever 50 is inserted
Movably mounted between the lock position and unlock position.
The child lever 50 is engaged with the open lever 8.
The child lever mechanism is provided in a vehicle door lock device provided in
-50 is a lock position and an unlock position by the long hole 51.
Ru can be easily switched between. Further, the child lock mechanism in the vehicle door lock device, the long hole 51
Since the child lock mechanism in the vehicle door lock device provided with an elastic projection 58 at the center of
Can be switched without a spring. Further, the child lock mechanism in the vehicle door lock device, the switch
An operation knob 55 protruding to the outside is attached to the child lever 50.
Since it is a child lock mechanism in a physically formed vehicle door lock device, it is easy to form. In the child lock mechanism of the vehicle door lock device, the child lever 50 may
Since this is a child lock mechanism in a vehicle door lock device in which an engagement protrusion 59 with which the knurl lever 45 is engaged is formed, it is easy to form.

[Brief description of the drawings]

FIG. 1 is a front view of a lock mechanism.

FIG. 2 is a rear view of the lock mechanism.

FIG. 3 is a rear view of the body.

FIG. 4 is a rear view of the lock lever.

FIG. 5 is a partially cutaway sectional view of a lock lever.

FIG. 6 is a cross-sectional view of an engaging portion.

FIG. 7 is a rear view of the back plate.

FIG. 8 is a vertical side view of a lock mechanism.

FIG. 9 is a side view of the child lever.

FIG. 10 is a perspective view of a through hole of a door panel.

FIG. 11 is a cross-sectional view of a through hole of a door panel and an operation knob .

FIG. 12 is a child lock state diagram.

FIG. 13 is an operation diagram of a child lock.

FIG. 14 is a non-child lock state diagram.

FIG. 15 is an operation diagram of a non-child lock.

FIG. 16 is a view of a second embodiment.

FIG. 17 is a view of a third embodiment.

FIG. 18 is a view of a third embodiment for a front door.

FIG. 19 is a side view of FIG. 18;

FIG. 20 is a diagram of a known example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Striker, 3 ... Latch, 4 ... Ratchet, 5 ... Recess, 6 ... Guide groove, 7 ... Shaft, 8 ... Open lever, 9 ... Engagement part, 10 ... Outer handle, 11 ... Rotating end , 12 ... shaft, 13 ... arm, 14 ... long hole, 15 ... moving rod, 16 ... engagement pin, 17 ... ratchet arm, 18 ...
Connecting pin , 19: engagement end, 20: lock lever, 20a
... engagement hole, 21 ... back plate, 22 ... lever part, 2
3 ... shaft, 24 ... projection, 25 ... through hole, 26 ... round hole, 27
... Notch, 28 ... Elastic piece, 29 ... Contact surface, 30 ... Bending plate, 31 ... Relay lever, 31a ... One end, 31b ... Other end, 32 ... Inner lock operation member, 33 rod, 34 ...
Shaft, 35 arm, 36 tip, 37 projection, 38 bulge, 39 engagement part, 40 left wall, 41 right wall, 42
Bottom surface, 43 ridge, 44 spring, 45 inner lever, 46 shaft, 47 end, 48 inner handle, 49
... rod, 50 ... child lever, 51 ... long hole, 53
... door panel, 54 ... through-hole, 55 ... operation knob , 56 ... other end side, 57 ... one end side, 58 ... elastic projection, 59 ... engagement projection, 60 ... engagement claw, 61 ... engagement arm, 62 ... one end , 6
4 ... Cover.

Claims (5)

(57) [Claims] A door lock device attached to a door side has an outer side.
Rotated by opening handle 10 or inner handle 48
An open lever 8 that can release the ratchet 4 from the latch 3 and an inner lever 45 that rotates by opening the inner handle 48 are provided. A child lock is provided between the inner lever 45 and the open lever 8. Rank
Child transitioning between position and child unlock position
The lever 50 is provided, the child lever 50, unload
When it is in the lock position, it directly engages with the inner lever 45
Rotate the inner lever 45 to rotate the child lever.
-50 rotates and engages directly with the open lever 8
The open lever 8 by turning the child lever 50
The inner lever 45 is disengaged from the inner lever 45 in the locked position to rotate the inner lever 4.
A child lock mechanism in a vehicle door lock device configured to prevent the child lever 50 from rotating even when the child lock 5 is rotated. 2. The door lock device according to claim 1, wherein
The bent plate 30 of the back plate 21 on the back of
The inner lever 45 is rotatably mounted on the shaft 46.
The child lever 50 is provided on the shaft 46 with the long hole 5.
1 so that it can be freely moved between the locked position and the unlocked position.
The child lever 50 is attached to the open lever.
A child lock mechanism in a vehicle door lock device provided in engagement with the vehicle door lock device. 3. The center of the elongated hole 51 according to claim 2,
A child lock mechanism in a vehicle door lock device in which an elastic projection 58 is provided on a portion . 4. The child lever according to claim 1, wherein
An operation knob 55 projecting outward is integrally formed on the
Child lock mechanism in a vehicle door lock device. 5. The child lever according to claim 1, wherein
Reference numeral 50 denotes an engagement protrusion with which the inner lever 45 is engaged.
59. A child lock mechanism in a vehicle door lock device forming 59 .