JPH0782939A - Child lock mechanism in car door locking device - Google Patents

Abstract

PURPOSE:To simplify a child locking mechanism. CONSTITUTION:In a door locking device fitted to a door provided with an open lever 8, an inner lever 45 rotating by the opening motion of an inner handle 48, a child lever 50 which does not rotate even when rotating the inner lever 45 when it is brought in the child lock position, but which rotates together with the inner lever so as to rotate the open lever 8 when rotating the inner lever if it is brought in the non-child lock position, is provided between the open lever 8 and the inner lever 45. A control pin 55 protruding to the outside through a pierced hole 54 of the door panel 53 of door is provided in the child lever 50.

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 A conventionally known child lock mechanism to which the present application is directed is as shown in FIG. In FIG. 20, a
Is a back plate attached to the back side of the lock device body, b is an inner lever axially fixed to the back plate a by a shaft c, d is an open lever, and e is an intermediate lever engaged with the open lever d. The lever e is also locked by the shaft c. f is a child lever, g is its handle, h
Is a vertical moving rod having a pin i connected to the child lever f, j is a radial hole formed in the intermediate lever e, and k is a contact portion of the inner lever. FIG. 20 shows that, even if the handle is opened and the inner lever b is rotated in the child-lock state, the contact portion k does not contact the pin i, and therefore the intermediate lever e does not rotate. The open lever d does not rotate and does not open the door. When the child lever f is moved from the A position to the B position, it is brought into a non-child lock state (released state), and when the handle is opened to rotate the inner lever b, the abutting portion k comes into contact with the pin i and pushes it. Therefore, the intermediate lever e rotates, and the open lever d rotates to open the door. Of the above, the intermediate lever e
Is in charge of not only the function of rotating the open lever d but also the function of vertically guiding the pin i.

[0003]

In the above-mentioned known example, in order to switch the engaging pin i to the upper and lower end positions in the elongated hole j, the child lever f, the vertical moving rod h, and the intermediate lever e are provided.
You need parts. However, if devised particularly, the three parts can be made into one part, not only the structure can be simplified, but also the cost can be reduced due to the deletion of the parts and the other parts can be enhanced accordingly. it can.

[0004]

Therefore, according to the present invention, a door lock device mounted on the door side is provided with an open lever 8 and an inner lever 4 which is rotated by an opening operation of an inner handle 48.
5, the inner lever 45 does not rotate between the open lever 8 and the inner lever 45 even if the inner lever 45 is rotated at the child lock position, but the inner lever 45 at the non-child lock position. Rotate together to rotate the open lever 8
Is provided with one child lever 50 capable of rotating, and the child lever 50 is provided with the through hole 5 of the door panel 53 of the door.
4 is a child lock mechanism in a vehicle door lock device that is provided with an operation pin 55 exposed to the outside through the connector 4. Further, in the present invention according to claim 1, the child lever 50 is attached to a shaft 46 that locks the inner lever 45 by a long hole 51 so as to be displaced between both ends of the long hole 51. When the child lever 50 is displaced to one end of the elongated hole 51, the child lever 50 and the inner lever 45 are engaged with each other, and when the child lever 50 is displaced to the other end of the elongated hole 51, the child lever 50 and the inner lever 45 are engaged with each other. The inner lever 45 is a child lock mechanism in a vehicle door lock device that is disengaged.

[0005]

An 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, and a striker 2 on the vehicle body side is provided on the front side thereof.
A recess 5 for accommodating a latch 3 that engages with and rotates and a ratchet 4 that engages with the latch 3 and prevents its reverse rotation is provided. Reference numeral 6 is a guide groove that is long in the left-right direction into which the striker 2 enters.

At the upper position on the back side of the body 1, a left and right intermediate portion of an open lever 8 which is long in the left and right sides is fixed by a shaft 7 in the front-rear direction. Engagement portions 9 are formed at left and right ends (left end) of the open lever 8. Reference numeral 10 is an outer handle of the rear seat door, and a pivot end 11 thereof faces the engaging portion 9. Reference numeral 12 is a shaft for pivotally mounting the outer handle 10. An arm 13 protruding downward is formed in the vicinity of the shaft 7 of the open lever 8, and a long hole 14 extending in the radial direction from the shaft 7 is formed in the arm 13. An engaging pin 16 provided at the upper end of a vertically movable rod 15 is engaged with the elongated hole 14. The engaging pin 16 moves in the vertical direction in the elongated hole 14 and is displaced to the upper position of the elongated hole in the locked state and to the lower position of the elongated hole in the unlocked state.

Reference numeral 17 denotes a ratchet arm pivotally attached to the shaft 7. One end (upper end) of the ratchet arm 17 is fixed at the other end of a pin 18 fixed to the ratchet 4 to the ratchet arm 17 and the ratchet 4. And an engaging end 19 facing the engaging pin 16 at the unlocked position of the lower end of the elongated hole 14 is formed at the other end (lower end) of the ratchet arm 17. When the engagement pin 16 is in the unlocked state of the lower end of the elongated hole 14, when the open lever 8 is rotated by opening the door (rotated counterclockwise in FIG. 2), it engages with the elongated hole 14 of the arm 13 of the open lever 8. Since the engaging pin 16 that is moving moves to the right, the engaging end 19 is pushed to rotate the ratchet arm 17,
As a result, the ratchet 4 is released from the latch 3 via the pin 18 and the door is opened.

As shown in FIG.
The lock lever 20 shown in FIG. 5 is arranged, and the lock lever 20 is directly fixed to a back plate 21 which is 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.
2 and the shaft portion 23 are integrally formed of synthetic resin,
Protrusions 24, 24 that project in a direction parallel to the lever portion 22 (the direction is not limited) are integrally formed on both sides of the tip of the shaft portion 23. As shown in FIG. 7, the back plate 21 is formed with 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 projections 24, 24 is inserted therethrough, and the shaft portion 23 does not come off when the inserted shaft portion 23 is rotated about 60 degrees, and the projection 24, 24
To form the notches 27, 27. Align the protrusion 24 with the notch 27, insert the shaft portion 23, and then set the lever portion 22 by 60.
When rotated once, the protrusion 24 engages with the round hole 26 and cannot be removed.

An elastic piece 28 is integrally formed at the tip of the protrusion 24 so as to project toward the back surface of the back plate 21. When the lever portion 22 is fixed to the back plate 21, the elastic piece 28 elastically abuts the back surface of the back plate 21. Therefore, even if the thickness of the back plate 21 changes and the clearance changes, It does not rattle. The same effect can be obtained by forming the elastic piece 28 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.

As shown in FIGS. 7 and 8, the back plate 21
On the right side of the bending plate 30, a part is bent backward (backward direction) to form the bending plate 30, and the lower end side of the bending plate 30 is L-shaped.
The die relay lever 31 is pivotally supported. One end (upper end) 31a of the relay lever 31 locks a rod 33 reaching the inner lock operation member 32, and the other end (lower end) 31b thereof locks the lock lever 2.
The engaging hole 20a formed on the right side of 0 is engaged. Figure 2
Is in the unlocked state, but in this state, when the inner lock operation member 32 is pushed to perform the lock operation, the L-type relay lever 31 rotates right in FIG. 8, and the other end 31b causes the lock lever 20 to rotate right in FIG. The lock lever 20 with the shaft 34
The moving rod 15 which is axially stopped by is moved upward.

An arm 35 protruding upward is formed at the center of the lock lever 20, and the tip 3 of the arm 35 is formed.
A protrusion 37 protruding in the direction of the body 1 is formed at 6. Reference numeral 38 denotes a bulging portion formed on the body 1 to form the guide groove 6, and an engaging portion 39 facing the protrusion 37 of the arm 35 below the bulging portion 38 as shown in FIG. To form.
The engaging portion 39 has a left wall 40 and a right wall 41 on both left and right sides,
As shown in FIG. 6, the bottom surface 42 has a high crest 43 located substantially in the center of the left and right, and the left and right sides of the crest 43 are gradually lowered. When the protrusion 37 moves over the ridge 43 and moves to the left and right, it is guided by an inclination and stops by hitting the left and right walls 40 and 41. This eliminates the need for an overcenter spring. In FIG. 2, reference numeral 44 is a spring that always rotates the open lever 8 to the right.

The arm 35 and the protrusions 24, 24 are
The protrusion 24 does not overlap the notch 27 even when the lock lever 20 rotates between the locked position and the unlocked position. An L-shaped inner lever 45 is attached to the upper end of the bending plate 30 of the back plate 21 as shown in FIG.
Is supported by. A rod 49 reaching an inner handle 48 is engaged with one end 47 of the inner lever 45.

Reference numeral 50 in FIG. 9 is a child lever, and the shaft 46 is provided in a vertical elongated hole 51 formed on the left side in FIG.
Insert. On the left side of the child lever 50, an operation pin 5 protruding to the outside through a through hole 54 of a door panel 53.
5 is integrally formed, and when the operation pin 55 is picked up and moved up and down to perform the switching operation, the child lever 50 moves to the child lock position where the shaft 46 is located on the one end side 57 of the elongated hole 51, as shown in FIG. 14, the shaft 46 is switched to the release position in which the shaft 46 is located at the other end side 56 of the elongated hole 51. 5
Reference numeral 8 denotes an elastic protrusion that gives a feeling of nodal movement when the child lever 50 is switched.

An engaging protrusion 59 is formed on the back side of the child lever 50. The engaging projection 59 is located on the rotation locus of the engaging claw 60 of the inner lever 45 when the child lever 50 is in the release position (FIG. 14), and when the inner lever 45 rotates, the child lever 50 also rotates in conjunction. However, when the child lever 50 reaches the child lock position (FIG. 12), even if the inner lever 45 is rotated out of the rotation track of the engaging claw 60, the child lever 5
0 does not rotate. Engaging arm 6 of child lever 50
1 is exposed to the right end 62 of the open lever 8.

In FIG. 14, the operation pin 55 has a child lock position indicated by a virtual line a and a solid line b.
Becomes the release position, and the user switches the operation pin 55 within this range. However, as described above, since the child lever 50 in the release position b rotates in conjunction with the rotation of the inner lever 45, when the inner lever 45 rotates by the door opening operation, the operation pin 55 moves to the solid line position c in FIG. Because of the movement, the through hole 54 of the door panel 53 facing the operation pin 55 is also formed in a shape that allows the operation pin 55 to move from a to b to c. Therefore, when the operation pin 55 is in the release position b, the through hole 54
In order to prevent the user from accidentally moving the operation pin 55 to the position c side, the tunnel-shaped cover 64 (see FIG. 1) is provided in the portion of the through hole 54 corresponding to the position c.
0, 11) are formed.

FIG. 16 shows a child lever 50 'of another embodiment. In this embodiment, only the switching direction of the child lever 50 'is changed, and there is no functional difference. FIG. 17 shows a child lever 50 ″ according to still another embodiment. In this embodiment, the elastic protrusion 5 is provided.
The shape of 8 "is changed to improve the smoothness at the time of switching.

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

[0018]

The inner handle 48 is opened when the child lever 50 is in the unlocked (non-child lock) state (FIGS. 8 and 14) and the lock lever 20 is in the unlocked state (down state of the engaging pin 16 in FIG. 2). When the door is operated, the inner lever 45 moves about the shaft 46 via the rod 49 as shown in FIGS.
, The engaging claw 60 of the inner lever 45 abuts the engaging protrusion 59 to rotate the child lever 50 leftward, 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 to move the pin 18 The ratchet 4 can be disengaged from the latch 3 to open the door.

Next, when the operation pin 55 exposed to the outside through the through hole 54 of the door panel 53 is picked up and the child lever 50 is switched from the state shown in FIG. 8 to the state shown in FIG. 12 (the operation pin 55 moves from the position b). (a position), and the shaft 46 moves to the one end side 57 of the elongated hole 51 by overcoming the elastic resistance of the elastic protrusion 58. In this state, the engaging protrusion 59 of the child lever 50 is engaged with the engaging claw 60 of the inner lever 45.
Since it deviates from the rotation locus of No. 1, even if the inner handle 48 is operated to rotate the inner lever 45 as described above, the engaging claw 60 and the engaging protrusion 59 do not engage with each other, so the child lever 50 rotates. No, and therefore the door cannot be opened. However, even in this state, the open lever 8 can be rotated by the outer handle 10.

The tip of the engaging arm 61 of the child lever 50 has the upper surface of the bulging portion 38 of the body 1 (the upper surface of the bulging portion of the back plate 21 in the embodiment) and the open lever 8 as shown in FIG. Since it is sandwiched between the lower surface of the right end 62 and the operation pin 55, when the child lever 50 is switched, the tip of the engaging arm 61 can be set as the center of rotation, and the switching can be smoothly performed.

[0021]

According to the above-mentioned known example, the child lever f is used to switch the engaging pin i to the upper and lower end positions in the elongated hole j.
In addition, the vertical movement rod h and the intermediate lever e are required. However, according to the present invention, in the door lock device mounted on the door side, the open lever 8 and the inner lever 45 that rotates by the door opening operation of the inner handle 48 are provided.
5, the inner lever 45 does not rotate even if the inner lever 45 is rotated in the child lock position, but the inner lever 45 rotates together to rotate the open lever 8 in the non-child lock position. The child lever 50 of the
No. 0 is a child lock mechanism in a vehicle door lock device provided with an operation pin 55 exposed to the outside through a through hole 54 of a door panel 53 of the door. Therefore, when compared with a known example, a vertical moving rod and an intermediate rod are provided. You can save two pieces of lever. Further, in the present invention according to claim 1, the child lever 50 is attached to a shaft 46 that locks the inner lever 45 by a long hole 51 so as to be displaced between both ends of the long hole 51. When the child lever 50 is displaced to one end of the elongated hole 51, the child lever 5 is moved.
0 and the inner lever 45 are engaged with each other, and when the child lever 50 is displaced to the other end of the elongated hole 51, the child lever 50 and the inner lever 45 are disengaged from each other. Since it has a child lock mechanism, it can be easily done.

[Brief description of 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 sectional view of an engaging portion.

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

FIG. 8 is a vertical sectional side view of the 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 sectional view of a through hole of a door panel and an operation pin.

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 diagram of a second embodiment.

FIG. 17 is a diagram of a third embodiment.

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

FIG. 19 is a side view of FIG.

FIG. 20 is a known example diagram.

[Explanation of symbols]

1 ... Body, 2 ... striker, 3 ... latch, 4 ... ratchet, 5 ... concave, 6 ... guide groove, 7 ... shaft, 8 ... open lever, 9 ... engaging part, 10 ... outer handle, 11 ... rotating end , 12 ... Shaft, 13 ... Arm, 14 ... Oblong hole, 15 ... Moving rod, 16 ... Engaging pin, 17 ... Ratchet arm, 18 ...
Pin, 19 ... Engaging end, 20 ... Lock lever, 20a ... Engaging hole, 21 ... Back plate, 22 ... Lever part, 23 ...
Shaft portion, 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, 3
5 ... Arm, 36 ... Tip, 37 ... Projection, 38 ... Swelling portion,
39 ... Engaging portion, 40 ... Left wall, 41 ... Right wall, 42 ... Bottom surface,
43 ... ridge line, 44 ... spring, 45 ... inner lever, 46
... shaft, 47 ... one end, 48 ... inner handle, 49 ... rod, 50 ... child lever, 51 ... long hole, 53 ... door panel, 54 ... through hole, 55 ... operation pin, 56 ... other end side,
57 ... One end side, 58 ... Elastic protrusion, 59 ... Engaging protrusion, 60
... engagement claws, 61 ... engagement arms, 62 ... one end, 64 ... cover.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 26, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Child lock mechanism in vehicle door lock device

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock device, and more particularly to a child lock mechanism of a lock device for preventing a door from opening even if a child plays a trick.

[0002]

2. Description of the Related Art A conventionally known child lock mechanism to which the present application is directed is as shown in FIG. In FIG. 20, a
Is a back plate attached to the back side of the lock device main body, b is an inner lever which is fixed to the back plate a by a shaft c and is rotated by an inner handle, d is an open lever, and e is an intermediate lever engaged with the open lever d. Then, the intermediate lever e is also stopped by the shaft c. f is a child lever, g is its operation knob, h is a vertical moving rod having a pin i for connecting to the child lever f, j is a radial hole formed in the intermediate lever e, and k is an abutting portion of the inner lever. is there. FIG. 20 shows that even if the inner handle is opened to rotate the inner lever b in the child-lock state, the contact portion k does not contact the pin i, so that there is no vibration, and the intermediate lever e does not rotate. Therefore, the open lever d does not rotate and the door does not open. When the child lever f is moved from the A position to the B position, it is brought into a non-child lock state (released state), and when the handle is opened to rotate the inner lever b, the abutting portion k comes into contact with the pin i and pushes it. Therefore, the intermediate lever e rotates, and the open lever d rotates to open the door. Of the above, the intermediate lever e is the open lever d
In addition to the function of rotating the pin, it is also responsible for the function of vertically guiding the pin i.

[0003]

In the above-mentioned known example, in order to form a child lock mechanism provided between the inner lever b and the open lever d, a vertical moving rod h integrally formed with a pin i, Three parts are required: an intermediate lever e having a long hole j with which the pin i engages, and a child lever f that integrally forms an operation knob g and moves the vertical moving rod h in the vertical direction.

[0004]

It is an object of the present invention to simplify the three parts constituting the child lock mechanism into a single part without impairing the operability.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the latch 3 that engages with the striker 2 fixed to the vehicle body side to keep the door closed and the outer handle 10 and the inner handle 48 of the door directly or An open lever 8 that releases the engagement between the latch 3 and the striker 2 to open the door by being indirectly connected and rotated, and a child lock mechanism provided between the open lever 8 and the inner handle 48. In the door lock device having, the child lock mechanism includes an inner lever 45 that is connected to the inner handle 48 and rotates about a support shaft 46, and a child lever 50 that can rotate the open lever 8 to open the door. Compose the child lever 5
0 is formed with an operation knob 55 protruding to the outside through a through hole 54 formed in the door panel 53.
A vehicle door lock device configured to switch between a non-child lock position in which the child lever 50 rotates in association with the rotation of the inner lever 45 and a child lock position in which the inner lever does not operate when the inner lever 45 rotates. Is a child lock mechanism in.

[0006]

An 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, and a striker 2 on the vehicle body side is provided on the front side thereof.
A recess 5 for accommodating a latch 3 that engages with and rotates and a ratchet 4 that engages with the latch 3 and prevents its reverse rotation is provided. Reference numeral 6 is a lateral guide groove into which the striker 2 enters.

At the upper position of the back surface of the body 1, an open lever 8 is fixed by a shaft 7 in the front-rear direction. An engaging portion 9 is formed at the left end of the open lever 8. Reference numeral 10 denotes an outer handle of the rear seat door, and its rotating end 11 faces the engaging portion 9, and when the outer handle 10 is rotated, the open lever 8 counterclockwise against the elasticity of the spring 44. To configure.

The open lever 8 is provided with an arm 13 having a long hole 14 extending substantially in the radial direction from the shaft 7, and the long hole 14 has an engaging pin 16 provided at an upper end of a vertical moving rod 15. Engage. The lower end of the movable rod 15 is axially fixed to the lock lever 20 by the shaft 34, and when the lock lever 20 rotates, the movable rod 15 moves in the vertical direction, so that the engaging pin 16 also moves in the elongated hole 14 in the vertical direction. Configure for moving to.

Reference numeral 17 is a ratchet arm which is attached to the shaft 7. The ratchet arm 17 and the ratchet 4 are fixed to each other by a pin 18 so that the ratchet arm 17 and the ratchet 4 rotate integrally.
The ratchet arm 17 is formed with an engaging end 19 which faces the lower end position of the elongated hole 14.

The lock device is unlocked when the engaging pin 16 of the movable rod 15 is located at the lower end of the elongated hole 14 as shown in FIG. In this state, the outer handle 1
When the open lever 8 is rotated counterclockwise in FIG. 2 by 0, the engaging pin 16 engaged with the elongated hole 14 moves to the right and contacts the engaging end 19 to rotate the ratchet arm 17 counterclockwise. Then, since the ratchet arm 17 and the ratchet 4 are connected to each other via the pin 18,
The ratchet 4 turns to the right in FIG. 1 and is disengaged from the latch 3 to open the door.

On the other hand, the engaging pin 16 has the long hole 1
4 is located at the upper end of the lock device 4, the lock device is in a locked state. In this state, the outer handle 10 rotates the open lever 8 counterclockwise in FIG. 2 to move the engagement pin 16 engaged with the elongated hole 14 to the right side. Even if moved, the engagement pin 1
6 does not engage with the engaging end 19, the ratchet arm 1
7 cannot be rotated and the door cannot be opened.

Reference numeral 21 denotes a metal-made back plate attached to the back surface of the body 1, and the lock lever 20 is directly rotatably attached to the outside of the back plate 21. The lock lever 20 is formed with three arm portions parallel to the back plate 21. The first extending to the left
The arm portion 20a is an arm portion for connecting the key cylinder, but since the present locking device is for the rear seat, nothing is connected to the first arm portion 20a as shown in the figure. An inner lock operation member 32 is indirectly connected to the second arm portion 20b extending to the right as described later. As is well known, the lock lever 20 is switched between a locked position and an unlocked position by operating the inner lock operating member 32, and the engagement pin 16 of the moving rod 15 is moved in the vertical direction by this switching. The first arm portion 20a and the second arm portion 20
b are arranged so as to be arranged in a substantially straight line, and the remaining third arm portions 20c are arranged so as to be substantially orthogonal to them. As shown in FIGS. 4 and 6, the third arm portion 20
A protrusion 37 protruding toward the body 1 is formed at the tip 36 of c.

On the back surface of the body 1, as shown in FIG.
A bulging portion 38 bulging rearward to form the guide groove 6 is formed, and an engaging portion 39 facing the tip 36 of the third arm portion 20c is formed below the bulging portion 38. To do. On both left and right sides of the engaging portion 39, an unlock wall 40 that abuts when the third arm portion 20c reaches the unlock position and a lock wall 4 that abuts when the third arm portion 20c reaches the lock position.
1 is formed, and a ridge-shaped swelling nodal ridge portion 43 is formed substantially at the center of the bottom surface 42 of the engaging portion 39. Third arm portion 20
The protrusion 37 of c is in sliding contact with the bottom surface 42 of the engaging portion 39, and when the lock lever 20 is rotated, the protrusion 37 is moved into the nodal peak portion 43.
Move over elastically. By the action of the projection 37 and the nodal peak portion 43, the lock lever 20 is held at either one of the lock position and the unlock position, and is prevented from being accidentally displaced due to vibration of the vehicle or the like. Therefore, the lock lever 20 does not require an overcenter spring for positioning.

Next, the structure of the lock lever 20 will be described. The lock lever 20 of the present invention is basically 3
A lever portion 22 composed of two arm portions 20a to 20c, and a shaft portion 23 formed at the center of the lever portion 22,
These are integrally formed of synthetic resin as shown in FIG. At the tip of the cylindrical shaft portion 23, a retaining projection 24 is integrally formed that protrudes in a direction substantially parallel to the lever portion 22. As shown in FIG. 7, a fastening hole 25 is formed in the back plate 21 to which the lock lever 20 is attached. The fastening hole 25 is composed of a round hole 26 corresponding to the shaft portion 23 and a notch 27 corresponding to the projection 24. When the shaft portion 23 is inserted into the fastening hole 25 and rotated by about 60 degrees, the projection 25 is projected. 24 and the notch 27 are misaligned and cannot be pulled out.

An elastic piece 28 that elastically contacts the back surface of the back plate 21 is integrally formed at the tip of the protrusion 24. When the lock lever 20 is fixed to the back plate 21, the elastic piece 28 elastically abuts the back surface of the back plate 21, so that the thickness of the back plate 21 changes and the projection 24 and the back surface of the back plate 21 Even if the interval of changes, the rattling of the lock lever 20 is suppressed. The same effect can be obtained by forming the elastic piece 28 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.

As shown in FIGS. 7 and 8, a bent plate 30 is formed on the right side of the back plate 21 with a part thereof bent in the back direction, and an L-shaped relay lever 31 is formed on the lower side of the bent plate 30. To support. One end 3 of the relay lever 31
1a includes a rod 33 reaching the inner lock operation member 32.
And the other end 31b is engaged with the engagement hole 20d formed in the second arm portion 20b of the lock lever 20.

On the upper side of the bending plate 30 is shown in FIG.
As described above, the L-shaped inner lever 45 is pivotally supported by the support shaft 46. A rod 49 reaching an inner handle 48 is engaged with one end 47 of the inner lever 45.

FIG. 9 shows a child lever 50 which is the subject matter of the present invention, and the support shaft 46 is inserted into the elongated hole 51 thereof. The child lever 50 is shown in FIG.
As shown in FIG. 1, the operation knob 55 that projects to the outside through the through hole 54 formed in the panel 53 of the vehicle door is integrally formed. When the operation knob 55 exposed to the outside is picked up directly with a finger and the switching operation is performed, the child lever 50 moves to the long hole 51.
To the child lock position where the support shaft 46 is located at the other end 57 (FIGS. 12 and 13) and the non-child lock position where the support shaft 46 is located at the one end 56 of the elongated hole 51 (FIGS. 14 and 15). .

The child lever 50 is entirely made of synthetic resin, and at a middle position of the elongated hole 51, a nodal portion 58 that elastically swells in the direction of narrowing the width of the elongated hole 51.
To form. When the child lever 50 is switched, the nodal portion 58 comes into contact with the shaft 46 to generate a switching resistance, thereby maintaining a good switching operation interval and preventing the child lever 50 from being unnecessarily switched due to vibration or the like. To do.

The child lever 50 has an operating knob 5
5, an engaging protrusion 59 protruding toward the side opposite to 5 and an engaging arm 61 engaging with the right end 62 of the open lever 8 are formed. When the child lever 50 is in the non-child lock position (FIGS. 14 and 15), the engagement protrusion 59 faces the rotation locus of the engagement claw 60 of the inner lever 45, so that the inner lever 45 moves. When the child lever 50 rotates, the child lever 50 also rotates, and the engaging arm 61 of the child lever 50 engages with the right end 62 of the open lever 8 to rotate the open lever 8 clockwise. However, when the child lever 50 reaches the child lock position (FIGS. 12 and 13), the engagement protrusion 59 deviates from the rotation locus of the engagement claw 60, and the child lever 50 rotates even if the inner lever 45 rotates. Disappear.

The child lever 50 is in the child lock position when the operation knob 55 located at the position b shown by the solid line in FIG. 14 is turned to the position a shown by the dotted line. Further, the operation knob 55 moves from the position b indicated by the solid line to the position c indicated by the dotted line when the child lever 50 is turned counterclockwise by the inner handle 48 via the inner lever 45. In this way, since the operation knob 55 moves between the position a of the dotted line and the position c of the dotted line, the through hole 54 of the door panel 53 facing the operation knob 55 is also formed in a shape corresponding to this. Operation knob 5 at position b shown by the solid line
5 is located substantially in the middle of the through hole 54. As described above, if the operation knob 55 is located substantially in the middle of the through hole 54, the user may not know in which direction the operation knob 55 should be moved. Therefore, the door panel 5
Although the direction of the child lock position may be specified in 3, the operation knob 55 cannot be moved in an unnecessary direction in the present invention. That is, on the side of the position c of the through hole 54, a tunnel-shaped partition 64 as shown in FIG. 10 is formed, so that even if the operation knob 55 is pinched with a finger, the position c
It cannot be moved to the side.

The tip of the engaging arm 61 of the child lever 50 opposite to the operation knob 55 has a back plate 21 and a right end 62 of the open lever 8 as shown in FIG.
Between and. With this configuration, when the operation knob 55 is picked up with a finger and switched, the position of the engagement arm 61 is appropriately held, and thus the switching can be smoothly performed. That is, when the engagement arm 61 is in a dangled state, the center of rotation cannot be taken, and the smoothness of the switching operation is impaired.

FIG. 16 shows a child lever 50 'of another embodiment. In this embodiment, only the switching direction of the child lever 50 'is changed, and there is no functional difference. 17 shows a child lever 50 "of yet another embodiment. In this embodiment, the shape of the nodal portion 58" is changed.

The structure of the rear seat locking device is as described above. However, in order to make sure that the front seat locking device corresponding thereto has the same reference numerals in FIGS. I will show you using it. As you can see from the drawing,
The main components are the same for both, and only the structural position of the open lever 8 is different except for the portion related to the child lock mechanism. Incidentally, 63 is a key cylinder of the door.

[0025]

The lock lever 20 is in the unlock position and the child lever 50 is in the non-child lock position (see FIGS. 8 and 1).
When the inner handle 48 is opened at the time of 4), the inner lever 45 rotates left about the support shaft 46 in FIG. 14 via the rod 49, and the engaging claw 60 of the inner lever 45 moves to the child lever 50. It abuts on the engaging projection 59. Then, the child lever 50 rotates counterclockwise, the engagement arm 61 of the child lever 50 engages with the right end 62 of the open lever 8, and rotates the open lever 8 counterclockwise in FIG. 2 against the elasticity of the spring 44. This allows
Engagement pin 1 engaged with the long hole 14 of the open lever 8
6 moves to the right, and the engaging end 19 of the ratchet arm 17
Push to rotate ratchet arm 17 counterclockwise and set pin 1
The ratchet 4 can be released from the latch 3 via 8 to open the door.

When the child lever 50 is switched to the child lock position, the door is opened, and as shown in FIG. 11, the operation knob 55 at the position b of the through hole 54 of the door panel 53 is pinched and moved to the position a side. Then, the child lever 50 shifts from the position of FIG. 14 to the position of FIG. 12, and the engaging projection 59 of the child lever 50 deviates from the rotation locus of the engaging claw 60 of the inner lever 45. Therefore, even if the inner handle 48 is operated to rotate the inner lever 45 as described above, the engaging claw 60 and the engaging protrusion 59 are formed.
Since and are not engaged, the child lever 50 does not rotate and therefore the door cannot be opened.

However, as described above, when the child lever 50 is switched, the nodal portion 58 formed in the middle of the elongated hole 51 comes into contact with the shaft 46, so that it is appropriate for the switching operation. Since resistance is imparted, the feeling of the switching operation is improved, and it is possible to prevent the child lever 50 from being carelessly switched due to vibration or the like.

[0028]

As described above, according to the present invention, the child lock mechanism is connected to the inner handle 48 and is supported by the support shaft 46.
The inner lever 45 that rotates around the center and the child lever 5 that can rotate the open lever 8 to open the door when rotated.
0, the child lever 50 is formed with an operation knob 55 protruding to the outside through a through hole 54 formed in the door panel, and when the operation knob 55 is switched, the child lever 50 is Inner lever 4
Since the non-child lock position that rotates in conjunction with 5 and the child lock position that does not interlock with the inner lever 45 are switched to each other, it is possible to reduce the number of parts that are conventionally divided into three parts to one. Further, the through hole 54 is provided with the partition portion 64 into which the operation knob 55 enters when the child lever 50 rotates in conjunction with the inner lever 45, so that the operation knob 55 is prevented from being switched in the wrong direction. Further, the operation knob 55 is the child lever 50.
Since it is formed on one end side of the child lever 50 and the other end side of the child lever 50 can contact the back plate 21 of the lock device or an immovable member corresponding thereto, when the switching operation is performed by the operation knob 55, the child lever 50 The center of rotation is secured by the contact between the other end and the back plate 21, and smooth switching is possible. Further, the child lever 50 has an elongated hole 51 through which the support shaft 46 of the inner lever 45 is inserted.
Is a synthetic resin lever integrally formed, and the elongated hole 51 is provided with a nodal portion 58 which is elastically displaced by contacting with the support shaft 46 when the child lever 50 is switched, so that when the switching operation is performed. Since a suitable resistance is imparted, the feeling of the switching operation is improved, and it is possible to prevent the child lever 50 from being carelessly switched due to vibration or the like.

[Brief description of drawings]

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

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

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 sectional view of an engaging portion.

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

FIG. 8 is a vertical sectional side view of the locking device.

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 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 second embodiment of the child lever.

FIG. 17 is a third embodiment of the child lever.

FIG. 18 is a rear view of the front seat locking device.

FIG. 19 is a side view of the front seat locking device.

FIG. 20 is a known example diagram.

[Explanation of reference numerals] 1 ... Body, 2 ... Striker, 3 ... Latch, 4 ... Ratchet, 5 ... Recess, 6 ... Guide groove, 7 ... Shaft, 8 ... Open lever, 9 ... Engaging portion, 10 ... Outer handle, 11 ... Rotating end, 13 ... Arm, 14 ... Long hole, 15 ... Moving rod, 16 ...
Engagement pin, 17 ... Ratchet arm, 18 ... Pin, 19
... engaging end, 20 ... lock lever, 20a ... first arm portion, 20b ... second arm portion, 20c ... third arm portion, 2
0d ... Engagement hole, 21 ... Back plate, 22 ... Lever part, 23 ... Shaft part, 24 ... Detachment projection, 25 ... Fastening hole, 26
... Round hole, 27 ... Notch, 28 ... Elastic piece, 29 ... Abutting surface, 3
0 ... Bending plate, 31 ... Relay lever, 31a ... One end,
31b ... The other end, 32 ... Inner lock operating member, 33 ... Rod, 34 ... Shaft, 36 ... Tip, 37 ... Projection, 38 ... Bulging section, 39 ... Engaging section, 40 ... Unlock wall, 41 ... Lock wall , 42 ... bottom surface, 43 ... nodal peak portion, 44 ... spring, 45 ...
Inner lever, 46 ... Support shaft, 47 ... One end, 48 ... Inner handle, 49 ... Rod, 50 ... Child lever,
51 ... Long hole, 53 ... Panel, 54 ... Through hole, 55 ... Operation knob, 56 ... One end, 57 ... Other end, 58 ... Nodal part, 59 ... Engaging projection, 60 ... Engaging claw, 61 ... Engaging Arm, 62 ... Right end, 63 ... Key cylinder, 64 ... Partition section.

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Claims (2)

[Claims] 1. A door lock device mounted on a door side, comprising an open lever 8 and an inner lever 45 which is rotated by a door opening operation of an inner handle 48, wherein the open lever 8 and the inner lever 45 are provided. In between
When in the child lock position, the inner lever 45
Although it does not rotate even if it is rotated, it is provided with one child lever 50 that can rotate together with the rotation of the inner lever 45 to rotate the open lever 8 when in the non-child lock position. The child lever 50 has a door panel of a door. A child lock mechanism in a vehicle door lock device provided with an operation pin 55 exposed to the outside through a through hole 54 of 53. 2. The child lever 50 according to claim 1, wherein the child lever 50 is attached to a shaft 46 that locks the inner lever 45 by a long hole 51 so as to be displaced between both ends of the long hole 51. Lever 50 to the long hole 5
When the child lever 50 and the inner lever 45 are engaged with each other when the child lever 50 is displaced to one end, the child lever 50 and the inner lever 45 are disengaged when the child lever 50 is displaced to the other end of the elongated hole 51. Child lock mechanism in a vehicle door lock device.