JP3414642B2 - Door lock drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock drive device for driving a door lock mechanism mounted on a vehicle or the like.

[0002]

2. Description of the Related Art Conventionally, between an output shaft of an actuator incorporating a motor and a rotation center of a locking lever,
A door lock drive device in which the connecting portion of the output lever and the locking lever fixed to the tip of the output shaft is arranged, and the locking lever, the latch lever, and the handle lever are arranged outside the projection surface of the actuator case (prior art). Is proposed. In this door lock drive device, the locking lever, the latch lever, the handle lever, and the actuator are arranged at different positions, and the output lever and the locking lever are connected via a wire or a long rod.

[0003]

However, in the conventional door lock drive device, the output lever attached to the output shaft of the actuator and the locking lever for switching between the engaged state and the released state of the latch lever and the handle lever are provided. Are connected via wires or long rods, the size of the entire device increases. This causes a problem that the door lock driving device cannot be housed in a narrow space such as between the door inner panel and the door outer panel.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door lock drive device which can be housed in a narrow space by reducing the size of the entire device.

[0005]

According to the invention described in claim 1 , the first lever and the first lever are arranged in the thickness direction of the actuator.
It is possible to rotatably support the second lever and the third lever.
And, that is, the first lever in the projection plane of the actuator.
By arranging the second lever and the third lever, it is possible to directly connect the first lever and the second lever to the third lever without using a wire or a long rod. As a result, the size of the entire device can be reduced, so that the door lock drive device can be housed even in a narrow space.

Further, the center of rotation of the output lever is set to the output lever.
And the third lever, which are engaged with the engaging portion of the third lever.
By arranging it between the rotation center of the
The rotation center of the output shaft of the motor and the rotation center of the third lever
Double the working angle compared to the matched lock assembly
Can reduce the torque of the actuator output shaft by half.
Can be Thereby, in the actuator
Can reduce the size of the motor housed in
Therefore, the actuator itself can be made thin and
The size of the entire device can be further reduced.

According to the invention described in claim 2, by providing the engaging portion of the output lever and a connecting portion of the third lever in the recess of the actuator of the case, without the intervention of a wire or long rod, The output lever and the third lever can be directly connected in the projection plane of the actuator.
As a result, the size of the entire device can be reduced, so that the door lock drive device can be housed even in a narrow space.

According to the invention described in claim 3, with the rotation of the third lever, a slider which slides a groove-like portion formed in the first lever, notch formed in the second lever portion When the first lever and the second lever are engaged with each other, the engaged state is obtained. Further, when the slider that slides in the groove-shaped portion comes out of the notch with the rotation of the third lever, the released state of the first lever and the second lever is obtained.

[0009]

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION [Structure of Embodiment] An embodiment of the present invention will be described based on an embodiment with reference to the drawings. here,
1 is a diagram showing an integrated door lock drive device for a back door, FIGS. 2 and 3 are diagrams showing an unlocked state of the integrated door lock drive device for a back door, and FIGS. 4 and 5 are back views. It is the figure which showed the lock state of the integrated door lock drive device for doors.

The integrated door lock drive device for a back door (hereinafter abbreviated as a door lock drive device) 1 of the present embodiment is a lock (lock) for a back door (not shown) of a vehicle such as an automobile (for example, a 1BOX car). And used for unlocking (unlocking). The door lock drive device 1 includes an opening / closing device including a latch 2 and a ratchet 3, a door lock actuator (hereinafter, abbreviated as an actuator) 4 for generating a rotation output, and a rotation output of the actuator 4 for locking and unlocking the opening / closing device. It is composed of lock assy etc.

The latch 2 is housed in the main body case 5 so as to be rotatable around a support shaft 6. This latch 2
It has an opening 7 capable of receiving a striker (not shown) fixed to a door receiver of the vehicle body, and an engaging portion 9 for engaging with a claw portion 8 provided on the ratchet 3.

The ratchet 3 is provided so as to be rotatable around the support shaft 11. The ratchet 3 is provided with an arm 10 that engages with the arm 41 of the latch lever 24, in addition to the claw 8 described above.

The actuator 4 inputs a signal from a lock button (not shown) for instructing locking (locking) of the back door and an unlock button (not shown) for instructing unlocking (unlocking) of the back door. The rotation direction of the output shaft 14 is switched according to the direction of the current flowing through the energizing circuit connected to the electronic control unit (not shown). The actuator 4 includes a case 12 having a concave shape that accommodates one motor (not shown) and a link mechanism (not shown) therein, and the case 12
Case 13 with a substantially flat plate-shaped cover 13 that closes the opening of the
The output shaft 14 protrudes from the outer wall surface of the second shaft 2, and the output lever 15 is press-fitted to the outer circumference of the tip of the output shaft 14.

The case 12 has a motor housing portion 1
6, a housing 17 of the link mechanism, and a plurality of support columns 19 for supporting the flat plate-shaped lock plate 18 are provided. The bottom wall of the housing portion 17 is formed lower than the bottom wall of the housing portion 16, and the portion is a recess 20. Further, the output lever 15 is fixed to the outer circumference of the output shaft 14 by a tooth washer. A fan-shaped engagement hole (corresponding to the engagement portion of the present invention) 21 is formed at the tip of the output lever 15. In addition, the output lever 15 is provided in the housing portion 1 of the case 12 of the actuator 4.
It is rotatably arranged between the bottom wall of 7 and the lock plate 18.

The lock assembly, together with the output lever 15, is rotatably attached to a fixed member such as the lock plate 18 in a stacked (stacked) state in the thickness direction of the actuator 4. It is a sheet of levers. And the lock assembly is the key cylinder 22.
By operating a key (not shown) inserted inside, a locking lever (corresponding to the third lever of the present invention) 23 that rotates about the support shaft and by rotating about the support shaft A latch lever (corresponding to the first lever of the present invention) 24 for rotating the latch 2 via the ratchet 3.
And a door handle (not shown) mounted on the back door
A handle lever (corresponding to a second lever of the present invention) 26 that is driven by a wire cable (not shown) to rotate about a support shaft, and a latch lever 24 and a handle lever 26 can be engaged and disengaged. And clutch means connected to the.

In this embodiment, when the key is inserted into the key cylinder 22 and the key is rotated clockwise, the lock assembly of the door lock driving device 1 is operated so as to be in a locked (locked) state. Further, when the key inserted in the key cylinder 22 is rotated counterclockwise, the lock assembly of the door lock drive device 1 is operated so as to be in the unlocked state.

Next, the locking lever 23 of this embodiment will be described with reference to FIGS. Here, FIG. 6 is a view showing the locking lever 23, and FIG.
It is the figure which showed 0.

The locking lever 23 is a lever which is rotatably superposed on the lock plate 18 and rotates about a support shaft 27 provided on the lock plate 18. In the base plate portion of the locking lever 23, a slide hole 29 provided at a position overlapping the slide hole 28 of the lock plate 18, a slide hole 32 in which the pin portion 31 of the slider 30 slides, and an output lever 15 are provided. A convex connecting piece (corresponding to the connecting portion of the present invention) 33 that engages is provided.

In this embodiment, by operating the key inserted in the key cylinder 22, the sliding holes 28, 2
A pin 34 that slides inside 9 is fitted. The pin 34 is connected to the key cylinder 22 via the rod 35.
Is connected to the key lever 36. In addition, the connecting piece 33
Is provided so as to project from the side surface of the lock plate 18, and has a fan-shaped through hole 3 formed in the lock plate 18.
It penetrates through 7 and engages in an engagement hole 21 formed at the tip of the output lever 15. In this embodiment, the rotation center (A) of the locking lever 23, the connecting piece 33 of the locking lever 23, and the output lever 1 of the actuator 4 are used.
The connecting point (B) with the engaging hole 21 of the actuator 5
In the concave portion 20 of the case 12, that is, in the projection plane of the case 12.

Next, the latch lever 24 of this embodiment is shown in FIG.
It will be described with reference to FIGS. Here, FIG. 8 is a view showing the latch lever 24. Latch lever 24
Is a lever that rotates around a support shaft 40 provided on the lock plate 18, and the ratchet 3
An arm portion 41 that engages with the arm portion 10, a groove portion 42 on which the slider 30 slides, a protrusion portion 43 that restricts rotation of the handle lever 26, and the like are provided.

Next, the handle lever 26 of this embodiment will be described with reference to FIGS. 1 to 5 and 9. Here, FIG.
FIG. 6 is a view showing a handle lever 26. The handle lever 26 is a lever that is driven by the door handle via a wire cable and rotates about the same spindle 40 as the latch lever 24. From the end of the substrate portion of the handle lever 26, a perforated locking portion 44 to which the end of the wire cable is fixed is folded back.

The base portion of the handle lever 26 has a locked portion 45 whose rotation is restricted by the protrusion 43 of the latch lever 24, a substantially U-shaped notch portion 46 in which the slider 30 appears and disappears, and a spindle. A coil spring (elastic means) 47 wound around 40 is constituted by a standing wall portion 48 and the like for locking one end portion thereof. The other end of the coil spring 47 is locked to the main body case 5 fixed to the vehicle body.

Next, the clutch means of this embodiment will be described with reference to FIGS. The clutch means is formed on the slider 30 driven by the rotation of the locking lever 23, the groove portion 42 formed on the base portion of the latch lever 24, and the base portion of the handle lever 26. It is composed of a notch portion 46.

As shown in FIG. 7, the slider 30 includes an engaging portion 49 having an H-shaped cross section which engages with the hole wall of the groove portion 42 of the latch lever 24, and an end surface of the engaging portion 49. The columnar pin portion 31 is provided so as to project to the locking lever 23 side and the rotation output of the actuator 4 is transmitted. The pin portion 31
Of the handle lever 26 is engaged with the sliding hole 32 of the locking lever 23.
It engages with the notch 46 of FIG.

In this clutch means, as shown in FIG. 3, when the locking lever 23 rotates counterclockwise about the support shaft 27, the slider 30 slides on the groove 42 of the latch lever 24. Then, the slider 30 engages with the notch 46 of the handle lever 26, and the door lock drive device 1 is unlocked (unlocked). Further, as shown in FIG. 5, when the locking lever 23 rotates rightward about the support shaft 27, the slider 30 slides on the groove portion 42 of the latch lever 24 as shown in FIG. The slider 30 is released from the notch 46 of the handle lever 26, and the door lock driving device 1 is locked (locked).

[Operation of Embodiment] Next, the operation of the door lock driving device 1 of the present embodiment will be briefly described with reference to FIGS. 1 to 10.

(B) Operation from locked (locked) state to unlocked (unlocked) state When the driver (occupant) turns on (ON) the unlock button, the motor in the actuator 4 is activated and the actuator 4 The output lever 15 fixed to the outer periphery of the tip of the output shaft 14 moves in the direction of the arrow shown in FIG. That is, the output lever 15 corresponds to the actuator 4 in FIG.
The output shaft 14 rotates in the clockwise direction. And
Connecting piece 33 of locking lever 23 and actuator 4
At the connection point (B) with the engaging hole 21 of the output lever 15, the locking lever 23 is pushed down by the output lever 15 downward in FIG. That is, the locking lever 23 rotates clockwise around the support shaft 27 in FIG.

Then, the sliding hole 3 of the locking lever 23
The slider 30 connected to the latch lever 2
The groove-shaped portion 42 formed in 4 is moved downward in the drawing and enters the notch portion 46 of the handle lever 26 as shown in FIGS. 2 and 3, whereby the latch lever 24 interlocks with the handle lever 26. It becomes possible. That is, the door lock driving device 1 is unlocked (unlocked), and when the handle lever 26 is pulled to the left in the drawing, the latch lever 24 moves and the back door opens.

(B) Operation from unlocked (unlocked) state to locked (locked) state When the driver (occupant) turns on the lock button (ON),
The motor in the actuator 4 operates and the actuator 4
The output lever 15, which is fixed to the output shaft 14 of FIG. That is, the output lever 15 is
In FIG. 2, the actuator 4 rotates counterclockwise about the output shaft 14 of the actuator 4. Then, at the connecting point (B) between the locking lever 23 and the output lever 15 of the actuator 4, the locking lever 23 is pushed upward by the output lever 15 in FIG. That is, the locking lever 23 rotates counterclockwise around the support shaft 27 in FIG.

Then, the sliding hole 3 of the locking lever 23
The slider 30 connected to the latch lever 2
4 is moved upward in the drawing, and as shown in FIGS. 3 and 4, the latch lever 24 is not interlocked with the handle lever 26 by coming out of the notch portion 46 of the handle lever 26. It becomes a state. That is, even if the door lock driving device 1 is locked (locked) and the handle lever 26 is pulled to the left in the drawing, the latch lever 24 does not move and the back door does not open.

[Effects of Embodiment] As described above, the door lock drive device 1 of this embodiment, together with the output lever 15,
By stacking the lock assembly in the thickness direction of the actuator 4, the output lever 15 of the actuator 4 and the lock assembly are integrated. Then, the rotation center (output shaft 14) of the output lever 15 of the actuator 4 is arranged between the rotation center of the locking lever 23 and the connection point (B) between the output lever 15 of the actuator 4 and the locking lever 23. The output lever 15, the locking lever 23, and the connection point (B) are provided in the recess 20 of the case 12 of the actuator 4.

Thus, the output lever 15 and the lock assembly (the locking lever 23, the latch lever 24, the handle lever 26, etc.) can be directly connected in the projection plane of the actuator 4 without using a wire or a long rod. Therefore, the size of the entire apparatus can be reduced (compact). Thereby,
For example, even in a narrow space between the door inner panel and the door outer panel of the back door, the door lock drive device 1
The output lever 15 and the lock assembly can be accommodated.

Here, in FIG. 10, the center (D) of the output shaft 14 of the actuator 4 is the rotation center (A) of the locking lever 23, and the connecting points (B) to (C) of the locking lever 23 and the output lever 15. It is a figure explaining the good reason to arrange between and. The output lever 1 of the actuator 4
The length of 5 is (R2), the length of the locking lever 23 is (R1), and the rotation angle of the locking lever 23 is (θ
1), the rotation angle of the output lever 15 of the actuator 4 is (θ2), and the effective stroke is (S).

The work amount (E) between (B) and (C) is calculated based on the following equation (1).

[Equation 1] E (kgf · cm) = F × S Here, S is an effective stroke, which is a constant value.

When the operating force at the end (B) of the locking lever 23 is F1 and the operating force at the end (B) of the output lever 15 of the actuator 4 is F2, the operating force (F) is given by It is calculated based on the formula of 2.

[Equation 2] F1 = F2 = F

The torque (T1) at the rotation center (A) of the locking lever 23 can be expressed by the equation (3), and the torque (T2) at the center (D) of the output shaft 14 of the actuator 4 can be expressed.
Can be expressed by the formula of Equation 4.

[Equation 3] T1 = F1 × R1 = F × R1

[Equation 4] T2 = F2 × R2 = F × R2

When the following equation 5 is established, the following equation 6 is established.

[Equation 5] R2 = R1 / 2

[Equation 6] T2 = F × (R / 2) = (1/2) × F × R1
= (1/2) x T1

Then, ΔACZ and ΔDC shown in FIG.
With Z, the following equation 7 is established.

[Equation 7]   sin (θ2 / 2) = {R1 × sin (θ1 / 2)} × 2 / (R1 / 2)                     = Sin (θ1 / 2) × 2

Therefore, the output shaft 1 of the actuator 4
By arranging the center (D) of 4 between the rotation center (A) of the locking lever 23 and the connection points (B) to (C) of the locking lever 23 and the output lever 15, for example, the output of the actuator 4 Compared with a lock assembly in which the center (D) of the shaft 14 and the rotation center (A) of the locking lever 23 are matched, the operating angle can be doubled, so the torque of the output shaft 14 of the actuator 4 is halved. be able to. As a result, the size of the motor in the actuator 4 can be reduced, so that the actuator 4
The device itself can be made thin, and the size of the entire device can be further reduced.

[Modification] In this embodiment, the present invention is applied to the door lock drive device 1 for a vehicle such as an automobile, but the present invention locks and unlocks doors of vehicles other than automobiles, airplanes and ships. It may be applied to a vehicle door lock drive device. Further, the present invention may be applied to a door lock drive device that locks and unlocks a door of a building structure.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of a door lock drive device (embodiment).

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 (Example).

FIG. 3 is a plan view showing an unlocked state of the door lock driving device (embodiment).

FIG. 4 is a sectional view taken along line AA of FIG. 1 (Example).

FIG. 5 is a plan view showing a locked state of the door lock driving device (embodiment).

FIG. 6 is a plan view showing a locking lever (embodiment).

FIG. 7 is a perspective view showing a slider (Example).

FIG. 8 is a plan view showing a latch lever (embodiment).

FIG. 9 is a plan view showing a handle lever (embodiment).

FIG. 10 is an explanatory view showing the features of the door lock driving device (embodiment).

[Explanation of symbols]

1 Door lock drive 2 latch 3 ratchets 4 actuators 14 Output shaft 15 Output lever 20 recess 22 key cylinder 23 Locking lever (3rd lever) 24 Latch lever (first lever) 26 Handle lever (second lever) 30 slider 42 Groove 46 Notch

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Nakamura, 1-1, Showa-cho, Kariya city, Aichi, Denso Co., Ltd. (72) Inventor, Kisetsu Watanabe, 2-Kirihara-cho, Fujisawa-shi, Kanagawa Shiroki Engineering Co., Ltd. ( 72) Inventor Shinji Endo 2 Kirihara Town, Fujisawa City, Kanagawa Prefecture Shiroki Industry Co., Ltd. (56) Reference JP 62-197583 (JP, A) JP 2-8478 (JP, A) JP Flat 7-139239 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05B 65/12-65/42

Claims (3)

(57) [Claims] 1. An opening / closing device for opening and closing a door; (b) an actuator provided near the opening / closing device and having an output shaft for generating a rotational output; and (c) this actuator. A first lever that is rotatably supported by and that rotates to open and close the opening and closing device; and (d) a manual operation means that is rotatably supported by the actuator and is manually operated by the user. A second lever that rotates in conjunction with each other, and (e) is rotatably supported by the actuator and receives the rotational output of the output shaft of the actuator to rotate to engage the first lever and the second lever. A third lever for bringing the actuator into a released state or a released state, and (f) receiving the rotation output of the actuator, the third lever
A door lock driving device including an output lever that rotates the third lever about a fulcrum of the lever, comprising: the first lever, the second lever, and the third lever.
Is a laminated support rotatably in the thickness direction of the actuator.
The output lever is attached to an outer circumference of the output shaft, rotates about the output shaft, and has an engaging portion at a tip end thereof, and the third lever engages with the engaging portion. A door lock drive device having a coupling part that fits, wherein the rotation center of the output lever is arranged between the rotation center of the third lever and the connection part of the third lever. 2. The door lock drive device according to claim 1, wherein the actuator is a case of the actuator.
The output lever and the third lever have a recess in the thickness direction.
A door lock drive device, characterized in that a connecting portion with a door is provided in the recess . 3. The door lock drive device according to claim 1 or 2, wherein the groove-like portion formed in the first lever and the second lever.
The notch formed in the and the freely retractable in this notch
The groove-shaped portion and the groove-shaped portion are arranged as the third lever rotates .
And a slider that slides along the notch.
And rotation of the third lever causes the first lever and
Switching the second lever to the engaged state or the released state
A door lock drive device having a clutch means .