JPH07116880B2 - Locking device for vehicle rear seats - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lock device for a vehicle rear seat door.

(Prior Art) In the publicly known Japanese Patent Laid-Open No. 55-136379, a recess is formed in the front side of a synthetic resin body, and when a door is closed in the recess, a striker fixed to the vehicle body side is engaged to directly remove the recess. A latch that rotates and a ratchet that engages with the full-latch engagement step of the latch that is normally rotated by the closing door to prevent reverse rotation are provided, and the ratchet is locked in the recess by the ratchet shaft whose axis is in the front and back direction. In addition, an abutting portion formed on a part of the rotating end of the ratchet is provided in the recess, and the protrusion of the ratchet shaft projecting to the back side of the body has a door opening operation that is long in the left-right direction. Then, an open lever whose left and right ends swing up and down is attached to the shaft, and a laterally long hole that is longer in the radial direction than the shaft is formed in one of the other pieces of the open lever, and the lock lever is switched to the unlocked position below the open lever. Rotate Kkureba the provided pivotally attached to the metal backplate, the lock lever has a side projecting piece projecting toward the left and right both sides with upwardly projecting piece projecting upward T
A slide having a protrusion on the upper protruding piece that slidably engages in the laterally long hole and does not engage the contact portion at the lock position but engages the contact portion at the unlock position. In the one in which the base of the member is pivotally mounted by a shaft, the sliding member is non-detachably pivotally mounted to the lock lever, and the protrusion of the sliding member is inside a large window formed in the synthetic resin body on the left and right sides. In the above description, the one that is formed so as to slide and move between the unlock position facing the contact portion and the lock position disengaged from the contact portion is described.

Further, in Japanese Patent Laid-Open No. 63-93979, an actuator case having a motor chamber is attached to a lower part of a synthetic resin body, an actuator output shaft protruding rearward is provided on an upper part of the actuator case, and a lock lever is used for the actuator. A lock device for a vehicle fixed to an output shaft is described.

Incidentally, Japanese Patent Application Laid-Open No. 59-118968 describes an invention using a rod.

(Problems to be Solved by the Invention) Among the above-mentioned known examples, in the one disclosed in JP-A-55-136379, the lock lever has an upward projecting piece that projects upward, and a locking lever that projects leftward and rightward. The locking and unlocking can be switched by a key operation because it is a T-shaped having a side projecting piece, but it is for a driver's seat because the locking and unlocking can be switched by a sill knob. In addition, since the sliding member is rotatably attached to the lock lever, the lock lever is fixed to the lock position particularly in the structure in which the lock lever is fixed to the output shaft of the actuator as in the present invention. Since the unlock position does not rotate within the predetermined range, the structure is difficult to assemble in the structure in which the sliding member is permanently attached to the lock lever. Also, the lock lever is not fixed to the actuator output shaft, but is attached to the metal back plate in a non-detachable manner, so it cannot be automatically switched and driven. , Requires considerable ingenuity. Further, in this known example, the projection of the sliding member faces the abutting portion of the ratchet in the recess through the large left and right windows formed in the synthetic resin body. Large windows are formed on the left, right, up, and down for the protrusions to move, so not only is there concern that car wash or rainwater may enter from the windows, but the protrusions on the sliding members are abnormally long enough to reach the ratchet on the front side. Because of this, there is concern about strength, and the function will not be smooth due to bending.

Further, in the one disclosed in Japanese Patent Laid-Open No. 63-93979, an actuator case having a motor chamber is attached to the lower part of a synthetic resin body, and an actuator output shaft protruding to the rear side is provided on the upper part of the actuator case to lock it. The lever is a locking device for a vehicle fixed to the actuator output shaft. Looking at the door opening action of the door opening handle, as shown in Fig. 13, the door opening outer handle rotates to open. The upper end of the switching member b that slides vertically up and down by the door opening action is locked to the end of the lever a, and when the switching member b moves downward, the abutting part c pushes the engaging part e of the ratchet lever d. Although the ratchet is disengaged from the latch, when the lock lever f is switched to the unlock state, the switching member b is moved laterally at the elongated hole g so that the contact portion c does not contact the engagement portion e. It is intended. Therefore, since the switching member b vertically slides vertically and pushes down the engaging portion e by the abutting portion c, the engaging portion e that moves in an arc is pushed vertically, which makes it unreasonable and gives a feeling of being too neat and luxurious. Is not obtained, there is a problem there.

(Object of the Invention) Switching between locking and unlocking by power, and a vehicle lock that is easy to assemble and has a high-class feel.

(Means for Solving the Problem) Therefore, according to the present invention, the concave portion 2 is provided on the front side of the synthetic resin body 1.
When the door is closed in the recess 2, the latch 4 is engaged with the striker 7 fixed to the vehicle body side when the door is closed, and the full latch engagement step portion 10 of the latch that is normally rotated by the door is engaged and reversely rotated. And a ratchet 6 for preventing the ratchet 6 is provided. The ratchet 6 is axially locked in the recess 2 by a ratchet shaft 5 whose axial center is in the front-back direction, and a projection 12 formed at a part of a rotating end of the ratchet 6 is provided. Vertical through hole 11 formed in body 1
The projecting portion of the ratchet shaft 5 projecting to the back side of the body 1 further extends to the back side of the body 1, and an open lever 21 for swinging the left and right ends up and down when the door open handle is operated for a long time in the left-right direction. Axle the open lever 21
One of the other pieces 24 has a horizontally long hole 25 which is longer in the radial direction than the shaft 5.
And a lock lever 29 that is switchably rotated to a lock unlock position is provided below the open lever 21, and the lock lever 29 projects upward and an upward projecting piece 31 that projects upward. It has an L-shape having a side protruding piece 32, and is slidably engaged with the upper protruding piece 31 in the laterally long hole 25 and does not engage with the protrusion 12 in the locked position, but the protrusion 12 in the unlocked position. In which a base of a sliding member 34 having a projection 36 that engages with is rotatably attached by a shaft 35, the shaft 35 formed at the base of the sliding member 34 has an integral structure with the sliding member 34, and The shaft 35 forms a vertical projecting portion 35a by projecting a part of its head in the vertical direction, and the shaft 35 and the vertical projecting portion 35a are inserted into the tip of the upper projecting piece 31 of the lock lever 29. A shaft hole 33 with a notch 33a is formed to insert the shaft 35 into the shaft hole 33. Freely so as to engage releasably with is, the projection 36 of the slide member 34
Is slidably displaced between an unlocked position facing the upper part of the protrusion 12 at a position on the back side of the synthetic resin body 1 and a locked position separated from the upper part of the protrusion 12, and the sliding member 34
In the unlocked position, the shaft 35 faces the center of the ratchet shaft 5, and the actuator case 17 having the motor chamber 18 is attached to the bottom of the fracture synthetic resin body 1.
An actuator output shaft 19 protruding rearward is provided on the upper part of the actuator case 17, and the lock lever 29 is provided.
Is a lock device for a vehicle rear seat door fixed to the actuator output shaft 19.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings, in which reference numeral 1 denotes a synthetic resin body having a recess 2 formed on the front side thereof.
When the door is closed by the shaft 3 in the front-rear direction, it is engaged with the striker 7 fixed to the vehicle body side to rotate normally and the full-latch engagement step portion 10 of the latch that is normally rotated by the door is engaged and reversely rotated. And a ratchet 6 for preventing the above. 5 is a ratchet shaft in the front-rear direction. Reference numeral 8 is an engagement groove with which the striker 7 is engaged, 9 is a half-latch engagement step portion, and a is an entrance groove of the striker 7. Reference numeral 11 is a through hole in an up-and-down direction of an arc formed around the ratchet shaft 5 formed in the body 1, and a projection 12 provided at the tip of the ratchet 6 projects through the through hole 11 to the back side.

Reference numeral 13 denotes a back plate (FIG. 2 and subsequent figures) formed of a metal plate provided on the back side of the body 1. The back plate 13 has a flat plate portion 15 which is fitted and fixed to the body 1 and a standing portion 16 which stands up at a right angle (FIG. 4). In addition, 14 is a screw for fixing the lock device to the door, 17 is an actuator case provided in the lower part of the body 1, 18 is a motor chamber, and an output shaft 19 is provided above the actuator case 17. The actuator case 17 has a structure in which the front and back are split into two parts, and is fixed by screws 20. The front part of the actuator case 17 is preferably formed integrally with the body 1, and is covered with a back cover and fixed by screws 20.

The ratchet shaft 5 is provided in the front-rear direction, and an open lever 21 is rotatably attached to the rear side thereof (see FIG. 9).
(Fig. 10). The open lever 21 is long in the left-right direction, and has a shaft hole 22 formed in the center thereof so as to fit with the ratchet shaft 5. Reference numeral 23 is one piece of the open lever 21, 24 is another piece of the open lever 21, and the other piece 24 is provided with a laterally elongated hole 25 in the radial direction. Reference numeral 26 denotes an outer mounting portion to which a rod reaching the outer handle is mounted, and an operating lever 27 (Fig. 10) which is rotated by the inner handle faces the lower portion of the piece 23.
When the operating lever 27 moves upward in the direction a, the piece 23 is pushed up
Turn the open lever 21 counterclockwise. Reference numeral 28 denotes a return spring, which always rotates the open lever 21 to the right to bring the one piece 23 into contact with a part of the standing portion 16 of the back plate 13 and stop it. The laterally long hole 25 extends to a position above the protrusion 12.

The shaft center of the output shaft 19 is in the front-rear direction, and a lock lever 29 is attached to the output shaft 19 (Figs. 7 and 8). The lock lever 29 is formed in an L shape by a through hole 30 having a different diameter fitted to the output shaft 19, an upward protruding piece 31 that moves left and right, and a lateral protruding piece 32 that moves up and down. Notches 33 on the left and right sides of the upper protruding piece 3
A shaft hole 33 having a and 33a is formed, and the base of a sliding member 34 (Figs. 11 and 12) that moves left and right in the shaft hole 33 is detachably mounted on the shaft. The base of the sliding member 34 (Figs. 11 and 12) is integrally provided with a shaft 35 having vertical protrusions 35a, 35a on both upper and lower sides.
Is engaged with the shaft hole 33 of the lock lever 29 and half-rotated to be removably fitted, and a protrusion 36 is projected at the tip of the sliding member 34.
Engage with. The protrusion 36 is moved between the unlocked state in which the protrusion 12 is vertically overlapped with the protrusion 12 and the locked state in the non-overlapped state.

The lower end of the rod 38 is axially attached to the through hole 37 of the lateral protruding piece 32 that moves up and down by switching between lock and unlock, and the upper end of the rod 38 is
The intermediate lever 39 (Figs. 5 and 6) pivotally mounted on the upright portion 16 by the shaft 40 is pivotally mounted. The intermediate lever 39 has one piece 47 that rotates back and forth and another piece 46 that rotates up and down. The 14th
In the figure, 41 is a sill knob, 42 is a second intermediate lever, 43 is a rod, and 45 is a rear seat door.

(Operation) Next, the operation will be described.

An actuator case 17 which is integral or separate is provided at the bottom of the synthetic resin body 1, and an L-shaped lock lever 29 is fixed to its output shaft 19. On the other hand, the open lever 21 is fixed to the ratchet shaft 5 on the back side of the synthetic resin body 1 by its horizontally elongated hole.
The protrusion 36 of the sliding member 34 is engaged with 25, and the lock lever
The base portion of the sliding member 34 is axially attached to the shaft hole 33 formed in the upper protruding piece 31 of 29, and the shaft 35 of the sliding member 34 is provided with the vertical protruding portions 35a, 35a integrally on the head. Since the cutout portions 33a are provided on both left and right sides of the shaft hole 33, the shaft 35 can be easily mounted by inserting the shaft 35 into the shaft hole 33 and rotating the latter half, and can be easily assembled in the use state without coming off.

Then, although FIG. 3 is in the locked state, when the sill knob 41 of FIG. 14 is pulled up, the second intermediate lever 42 rotates to the right and the rod 43 that moves left rotates the intermediate lever 39 to the left, and the intermediate lever is rotated. Since the upper end of the rod 38 is connected to 39, the rod is pulled down, and the lower end of the rod 38 causes the lateral protruding piece 32 of the lock lever 29 to move downward to rotate the lock lever 29 counterclockwise around the output shaft 19. Then, the upward protruding piece of the lock lever 29
31 moves to the left and becomes the unlocked state shown in FIG. In the unlocked state, the sliding member 34 pivotally mounted in the shaft hole 33 of the upper protruding piece 31 is moved to the left, and the protrusion 36 formed at the tip of the sliding member 34 is moved to the left in the horizontally elongated hole 25. , So as to face the upper part of the protrusion 12. The above is unlock switching by operating the sill knob, but unlock switching can also be performed by directly energizing the motor when the switch is turned on to directly rotate the output shaft 19 by the actuator and directly rotate the lock lever 29.

In the unlocked state, as shown in FIG. 10, the outer handle is operated to open the door, and the outer mounting portion 26 is rotated in the direction b, or the inner handle is operated to open the operation lever.
When 27 is rotated in the direction a and pushes up the piece 23 to turn the open lever 21 counterclockwise, the protrusion 36 engaged with the horizontally long hole 25 of the open lever 21 moves downward in FIG. The protrusion 12 is moved downward by 36 to disengage the ratchet 6 and the door can be opened.

Next, in the unlocked state of FIG. 2, the sill knob 41 of FIG.
When is pressed, the second intermediate lever 42 rotates counterclockwise, and the rod 43 that moves right rotates the intermediate lever 39 clockwise.
Since the upper end of the rod 38 is connected to 39, the rod is pulled up, and the lower end of the rod 38 moves the side protruding piece 32 of the lock lever 29 upward to rotate the lock lever 29 right about the output shaft 19. Then, the upward protruding piece 31 of the lock lever 29 moves to the right to enter the locked state shown in FIG. In the locked state, the sliding member 34 pivotally attached to the shaft hole 33 of the upper protruding piece 31 is moved to the right, and the projection 36 formed at the tip of the sliding member 34 is moved to the right in the laterally long hole 25. The position is off the top of the protrusion 12.
The above is the lock switching by operating the sill knob, but the lock can be switched by turning on the switch to energize the motor to directly rotate the output shaft 19 by the actuator and directly rotate the lock lever 29.

In the locked state, as shown in FIG. 10, the outer handle is operated to open the outer mounting portion 26 in the direction B, or the inner handle is operated to open the operation lever 27 in the direction A. 3 pushes up one piece 23 to turn the open lever 21 counterclockwise to move the protrusion 36 engaged with the horizontally long hole 25 of the open lever 21 downward in FIG. Since the ratchet 6 cannot be moved, the ratchet 6 cannot be disengaged and the door cannot be opened.

(Effect) As described above, in the one disclosed in Japanese Patent Laid-Open No. 55-136379, the sliding member is axially attached to the lock lever so that it cannot be detached from the lock lever. In the structure fixed to the output shaft, the rotation range of the lock lever is limited so that it can rotate only between the locked position and the unlocked position, so that it is difficult to assemble.
Further, since the lock lever of the known example is dedicated to manual switching and is not automatic using an actuator, considerable devising is required to automatically switch using the actuator. Further, since the projection protruding from the sliding member of the known example has a structure which faces the abutting portion of the ratchet in the recess through the large left and right windows formed in the synthetic resin body, it does not slide on the synthetic resin body. Since it is necessary to form a large window for the protrusion protruding from the member to move up and down, left and right, not only there is a concern that car wash or rainwater may enter from the window, but the protrusion of the sliding member reaches the ratchet. Since it is extraordinarily long, there is concern about strength, and the operation is not smooth.

Further, in the one disclosed in Japanese Patent Laid-Open No. 63-93979, an actuator case having a motor chamber is attached to the lower part of a synthetic resin body, and an actuator output shaft protruding to the rear side is provided on the upper part of the actuator case to lock it. The lever is a locking device for a vehicle fixed to the actuator output shaft. Looking at the door opening action of the door opening handle, as shown in Fig. 13, the door opening outer handle rotates to open. The upper end of the switching member b that slides vertically up and down by the door opening action is locked to the end of the lever a, and when the switching member b moves downward, the abutting part c pushes the engaging part e of the ratchet lever d. Although the ratchet is disengaged from the latch, when the lock lever f is switched to the unlock state, the switching member b is moved laterally at the elongated hole g so that the contact portion c does not contact the engagement portion e. It is intended. Therefore, since the switching member b vertically slides vertically and pushes down the engaging portion e by the abutting portion c, the engaging portion e that moves in an arc is pushed vertically, which makes it unreasonable and gives a feeling of being too neat and luxurious. Is not obtained, there is a problem there.

However, according to the present invention, the concave portion 2 is formed on the front side of the synthetic resin body 1, and when the door is closed in the concave portion 2, the latch 4 which is engaged with the striker 7 fixed to the vehicle body and rotates normally by the closing door. And a ratchet 6 that engages with the full-latch engagement step portion 10 of the latch to prevent reverse rotation. The ratchet 6 is axially locked in the recess 2 by a ratchet shaft 5 whose axial center is in the front-back direction. A vertical through hole formed on the body 1 with a protrusion 12 formed on a part of the rotating end of the ratchet 6.
An open lever 21 that is protruded from the back side of the body 1 than 11 and has a protruding portion that protrudes to the back side of the body 1 of the ratchet shaft 5 so that both left and right ends swing up and down when a door opening operation is performed for a long time in the left-right direction. The open lever
One of the other pieces 24 of 21 is a horizontally long hole that is longer than the shaft 5 in the radial direction.
25 is provided, and a lock lever 29 for switching and rotating to a lock unlock position is provided below the open lever 21.
The lock lever 29 has an upward projecting piece 31 projecting upward.
And an L-shaped protruding piece 32 that projects laterally, the upper protruding piece 31 is slidably engaged in the laterally long hole 25 and is not engaged with the protrusion 12 in the locked position. In the unlocked position, the base of the sliding member 34 having the projection 36 that engages with the projection 12 is rotatably attached by the shaft 35, and the shaft 35 formed at the base of the sliding member 34 is the sliding member 34. And the shaft 35 forms a vertical protrusion 35a by projecting in the vertical direction on a part of the head of the shaft 35, and the shaft 35 and A shaft hole 33 with a notch 33a into which the vertical projection 35a is inserted is formed so that the shaft 35 is inserted into the shaft hole 33 and is detachably engaged when the latter half rotation is performed. The protrusion 36
Is slidably displaced between an unlocked position facing the upper part of the protrusion 12 at a position on the back side of the synthetic resin body 1 and a locked position separated from the upper part of the protrusion 12, and the sliding member 34
The shaft 35 faces the shaft center of the ratchet shaft 5 in the unlocked position, and the actuator case 17 having the motor chamber 18 is attached to the lower portion of the synthetic resin body 1.
An actuator output shaft 19 protruding toward the back side of the upper part of the actuator case 17 is provided, and the lock lever 29 is provided.
Is a locking device for the vehicle rear seat door fixed to the actuator output shaft 19, and therefore, the shaft 35 formed at the base of the sliding member 34 is the sliding member 34.
Since it is an integral structure with, it is easy to manufacture.

(B) The shaft 35 forms a vertical projecting portion 35a by projecting a part of its head in the vertical direction, and the shaft 35 and the vertical projecting portion are formed at the tip of the upper projecting piece 31 of the lock lever 29. Department
Since the shaft hole 33 with the cutout 33a in the left and right direction into which the shaft 35a is inserted is formed, the shaft 35 can be detachably engaged by inserting the shaft 35 into the shaft hole 33 and rotating the latter half of the shaft. Even if 29 is fixed to the output shaft 19 of the actuator and can rotate only between the locked position and the unlocked position and is inconvenient, the sliding member 34 can be easily attached.

C. The protrusion 36 of the sliding member 34 is slidably displaced between the unlocked position facing the upper portion of the protrusion 12 at the back side position of the synthetic resin body 1 and the locked position detached from the upper portion of the protrusion 12. Therefore, in combination with the configuration in which the projection 12 formed on a part of the rotation end of the ratchet 6 projects to the back side of the body 1 from the vertical through hole 11 formed in the body 1, the projection 36 and the projection are formed. Since 12 is engaged on the back side of body 1,
It is sufficient for the through hole 11 to have a width that allows the protrusion 12 to move up and down.
The structure can be made so that there is almost no intrusion of rainwater.

D. Due to the structure of the above item (c), the length of the protrusion 36 can be made shorter than that in the known example, so that not only the strength is improved, but also the deflection is small, so that the operation is smooth.

In the unlocked position, the shaft 35 of the sliding member 34 faces the axial center of the ratchet shaft 5, so that the projection 36 that moves up and down in an arc pushes the projection 12 that moves up and down in an arc.
It can be pressed smoothly without twisting.

(F) An actuator case 17 having a motor chamber 18 is attached to the lower part of the synthetic resin body 1, an actuator output shaft 19 projecting rearward is provided on the upper part of the actuator case 17, and the lock lever 29 is provided on the actuator output shaft 19 Since it is fixed to, you can automatically switch between lock and lock.

Has the effect.

[Brief description of drawings]

1 is a front sectional view of the locking device, FIG. 2 is a rear view of the locking device on the back side in an unlocked state, FIG. 3 is a rear view of the locking device on the back side in a locked state, and FIG. 4 is a sectional view of the back plate. 5 is a side view of the intermediate lever, FIG. 6 is a rear view of the intermediate lever, FIG. 7 is a side view of the lock lever, FIG. 8 is a rear view of the lock lever, FIG. 9 is a side view of the open lever, and FIG.
The figure shows the rear view of the open lever, and Fig. 11 is the side view of the sliding member.
FIG. 12 is a rear view of the sliding member, FIG. 13 is a known example view, FIG. 14 is a mounting state view, and FIG. 15 is an exploded view of essential parts. Explanation of reference numerals 1 ... Body, 2 ... Recess, 3 ... Shaft, 4 ... Latch,
5 ... Axis, 6 ... Ratchet, 7 ... Striker, 8 ...
... Engagement groove, 9 ... Half-latch engagement step, 10 ... Full-latch engagement step, 11 ... Through hole, 12 ... Protrusion, 13 ... Metal back plate, 14 ... Screw, 15 ... Flat plate part, 16 ... Standing part, 17 ... Actuator case, 18 ... Motor chamber, 19 ... Output shaft, 20 ... Screw, 21 ... Open lever, 22 ... Shaft hole, 23 ... Piece, 24 ...... Other piece, 25 ...... Horizontal oblong hole, 26 ...... Outer mount, 27 ...... Actuating lever, 28 ......
Return spring, 29 …… Lock lever, 30 …… Through hole, 31 …… Upward protruding piece, 32 …… Side protruding piece, 33 …… Shaft hole, 33a …… Notch part, 34 …… Sliding member, 35 …… Shaft, 35a …… Vertical projection, 36 …… Projection, 37 …… Through hole, 38 …… Rod, 39 …… Intermediate lever, 40 …… Shaft, 41 …… Silknob, 42 …… Second intermediate lever , 43 …… rod, 45 …… rear seat door, 46 …… other piece, 47
……piece.

Claims (1)

[Claims] 1. A synthetic resin body (1) is provided with a recess (2) on the front side thereof, and when the door is closed in the recess (2), a striker (7) fixed to the vehicle body is engaged to rotate normally and a latch (4) is normally rotated. A ratchet 6 for engaging the full-latch engagement step portion 10 of the latch to prevent reverse rotation is provided. The ratchet 6 is axially locked in the recess 2 by a ratchet shaft 5 whose axial center is in the front-back direction, and the ratchet 6 is provided. A protrusion 12 formed on a part of the rotation end of 6 is made to project to the back side of the body 1 through a vertical through hole 11 formed in the body 1, and a projection of the ratchet shaft 5 projected to the back side of the body 1. An open lever 21 whose left and right ends swing up and down when the door opening handle is operated to open in the left and right direction is pivotally attached to one part of the open lever 21. A hole 25 is formed to form the open lever. A lock lever 29 for switching and rotating to a lock unlock position is provided at a lower position of 21, and the lock lever 29 includes an upward projecting piece 31 projecting upward and a lateral projecting piece 32 projecting laterally. The upper protrusion 31 has a protrusion 36 slidably engaged in the laterally long hole 25 and not engaged with the protrusion 12 in the locked position, but engaged with the protrusion 12 in the unlocked position. The sliding member 34 has a base portion rotatably attached by a shaft 35.
A shaft 35 formed at the base of 34 has an integral structure with the sliding member 34, and the shaft 35 forms a vertical projecting portion 35a by protruding a part of its head in the vertical direction, and the lock lever 29 A shaft hole 33 with a notch 33a into which the shaft 35 and the vertical protrusion 35a are inserted is formed at the tip of the upper protruding piece 31, and the shaft 35 is inserted into the shaft hole 33 and is attached / detached when the latter half rotation is performed. The protrusions 36 of the sliding member 34 are freely engaged with each other between an unlocked position facing the upper part of the protrusion 12 at the back side position of the synthetic resin body 1 and a locked position disengaged from the upper part of the protrusion 12. The shaft 35 of the sliding member 34 faces the shaft center of the ratchet shaft 5 in the unlocked position, and the motor chamber 18 is provided below the synthetic resin body 1.
A lock device for a rear door of a vehicle, in which an actuator case 17 having the above is attached, an actuator output shaft 19 projecting to the rear side is provided on the upper part of the actuator case 17, and the lock lever 29 is fixed to the actuator output shaft 19.