WO2013150681A1 - アクチュエータユニット及び該アクチュエータユニットを備えるドアラッチ装置 - Google Patents
アクチュエータユニット及び該アクチュエータユニットを備えるドアラッチ装置 Download PDFInfo
- Publication number
- WO2013150681A1 WO2013150681A1 PCT/JP2012/080611 JP2012080611W WO2013150681A1 WO 2013150681 A1 WO2013150681 A1 WO 2013150681A1 JP 2012080611 W JP2012080611 W JP 2012080611W WO 2013150681 A1 WO2013150681 A1 WO 2013150681A1
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- WO
- WIPO (PCT)
- Prior art keywords
- protrusion
- rotation
- engagement arm
- drive gear
- lock lever
- Prior art date
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- 230000013011 mating Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/16—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on locking elements for locking or unlocking action
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/26—Output elements
- E05B81/30—Rotary elements
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/42—Cams
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/531—Doors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
- Y10T292/108—Lever
Definitions
- the present invention relates to an actuator unit and a door latch device that switch a vehicle door latch device between a locked state and an unlocked state.
- a door latch device for holding the door in a closed position is provided in a door of a vehicle such as an automobile.
- the door latch device can be switched between a locked state and an unlocked state by driving the actuator unit and operating a manual operation means such as a lock knob.
- the present applicant can rotate around a worm wheel rotated by a worm fixed to the drive shaft of the motor and an axis parallel to the axis of the worm wheel.
- the structure provided with a simple lock lever is disclosed.
- the worm wheel is rotated by driving the motor, and the lock lever is pressed by the protrusion formed on the rotation surface of the worm wheel to switch between the lock position and the unlock position, thereby being connected to the lock lever.
- the door latch device can be switched between a locked state and an unlocked state.
- the lock lever when the lock lever is switched from the lock position to the unlock position, the lock lever is pressed to the unlock position with the protrusion formed on one rotation surface of the worm wheel that is driven to rotate by the motor, and the other The switching operation is completed when another protrusion formed on the rotating surface comes into contact with the lock lever.
- the actuator unit needs to be able to rotate only the lock lever to the lock position and the unlock position regardless of the stop position of the worm wheel.
- the protrusion on each rotation surface of the worm wheel has a configuration in which, for example, two teeth are extended in the direction of 180 ° from the rotation center,
- the manual operation is surely permitted by widening the distance between the two and making the protrusions of both rotation surfaces symmetrical.
- the motor that rotates the worm wheel needs to have a high output, and if the operating time is shortened using a high output motor, the protrusion Since the impact sound generated when stopping against the lock lever tends to increase, in order to reduce the impact, the motor should be set in consideration of the balance between the operating time and the impact sound, or the protrusion and lock lever It is necessary to set an impact absorbing member at the abutting portion with the above, which causes an increase in the number of parts (see Patent Document 3).
- the present invention has been made in consideration of the above-described problems of the prior art, and an object of the present invention is to provide an actuator unit that can shorten the operation time of the door latch device without increasing the number of parts.
- An actuator unit includes a drive gear that can be rotated by driving a motor and a lock lever that can be rotated around a predetermined axis, and can be used to drive the motor and to operate a manual operation means provided on a door.
- An actuator unit that switches the door latch device between a locked state and an unlocked state by rotating the lock lever to a locked position and an unlocked position, and the drive gear is configured to rotate out of rotation surfaces on both sides.
- the first protrusion includes a pressing surface that contacts the first engagement arm in the first rotation direction of the drive gear, and the first engagement in a second rotation direction opposite to the first rotation direction.
- a locking surface abutting against the rotating end surface of the arm, and the pressing surface and the locking surface are provided alternately at intervals along the circumferential direction of the drive gear, and the second protrusion
- the pressing surface and the locking surface are alternately provided in a plurality along the circumferential direction of the drive gear, and the pressing surface and the locking surface of the first projecting portion are provided.
- the locking surfaces are provided back to back and back to the pressing surface of the first protrusion, respectively.
- the locking surface of the second projecting portion is positioned along an arcuate second rotation locus of the rotation end surface of the second engagement arm concentric with the first rotation locus, and the drive When the gear is in the second stop position, the locking surface of the second protrusion that contacts the rotation end surface of the second engagement arm is positioned along the second rotation locus, and The first protrusion provided back-to-back with the pressing surface of the second protrusion following the second rotation direction on the locking surface The locking surface of, and being located along said first rotation locus.
- the first and second protrusions from the start of rotation of the first and second protrusions when the drive gear is rotated by driving the motor while ensuring a smooth operation of the lock lever during manual operation. It is possible to minimize the operating angle until the contact with the engagement arm starts, and further, the locking surface of the first or second protrusion is the first immediately after the lock lever is switched to the lock position or the unlock position. Alternatively, the operating angle until it comes into contact with the rotation end surface of the second engagement arm can be minimized. For this reason, even if the motor has a low output, the locking operation and the unlocking operation can be surely performed within a desired operation time, and the drive gear is locked to the rotating end surfaces of the first and second engagement arms. The impact noise when the surfaces come into contact can be suppressed.
- the locking surface of the first protrusion contacting the rotation end surface of the first engagement arm follows the first rotation direction.
- the pressing surface of the first projecting portion intersects with the extension of the first rotation trajectory, and contacts the rotation end surface of the second engagement arm when the drive gear is in the second stop position.
- the pressing surface of the second protrusion that follows the locking surface of the second protrusion intersects with the extension of the second rotation locus, the pressing surface of the second protrusion follows the locking direction.
- the operating angle of the drive gear during the locking operation can be reduced.
- the first protrusion has three first teeth arranged at an equal angle along the circumferential direction of the drive gear, and is provided on an end surface of each first tooth on the one rotation direction side.
- the pressing surface is provided on the end surface of each first tooth portion on the second rotational direction side, and the second projecting portion is equiangular along the circumferential direction of the drive gear.
- the operating angle of the drive gear during the locking operation and the unlocking operation is determined. Further, the overall configuration can be simplified, and the lock operation and the unlock operation can be easily controlled.
- the operating angle until the arm comes into contact with the arm can be minimized, and the locking surface of the first or second projecting portion is the first or second immediately after the lock lever is switched to the locked position or the unlocked position.
- the operating angle until the two engaging arms come into contact with the rotating end face can also be minimized. For this reason, even if the motor has a low output, the locking operation and the unlocking operation can be surely performed within a desired operation time, and the drive gear is locked to the rotating end surfaces of the first and second engagement arms. The impact noise when the surfaces come into contact can be suppressed.
- FIG. 1 is a vehicle inner side view of a door latch device including an actuator unit according to an embodiment of the present invention.
- FIG. 2 is a side view schematically showing the internal structure of the door latch device in an unlocked state.
- FIG. 3 is a side view schematically showing the internal structure of the door latch device in a locked state.
- FIG. 4 is a perspective view showing the positional relationship between the worm wheel and the lock lever.
- FIG. 5 is a front view showing the positional relationship between the worm wheel and the lock lever.
- FIG. 6 is a plan view showing the relationship between the first and second protrusions and the first and second engaging arms when the lock lever is in the unlocked position, and FIG. 6 (A) shows the worm wheel.
- FIG. 6B is a plan view seen from the other rotating surface side of the worm wheel.
- FIG. 7 is a plan view showing the relationship between the first and second protrusions and the first and second engaging arms as seen from one rotating surface side of the worm wheel, and FIG. 7 (A) shows the lock lever.
- FIG. 7B is a diagram showing a state where the lock lever is in the lock position.
- FIG. 8 is an explanatory view of the operation of the worm wheel and the lock lever as viewed from one rotating surface side
- FIG. 8A is an explanatory view showing a state in which the lock lever is in the unlock position.
- FIG. 8B is an explanatory view showing a state in which the first protrusion starts to contact the lock lever by rotating the worm wheel from the state shown in FIG.
- FIG. 8A is explanatory drawing which shows the state which rotated the worm wheel further from the state shown to (B), and rotated the lock lever, FIG.8 (D) further rotates a worm wheel from the state shown in FIG.8 (C).
- 8E is an explanatory view showing a state in which the lock lever is further rotated.
- FIG. 8E is a diagram in which the worm wheel is further rotated from the state shown in FIG. Explanation showing the position It is.
- FIG. 1 is a vehicle interior side view of a door latch device 12 including an actuator unit 10 according to an embodiment of the present invention, and the door latch device 12 is attached to a door panel of a door D (an example of a front door in FIG. 1). It shows the state seen from the inside of the car.
- FIG. 2 is a side view schematically showing the internal structure of the door latch device 12 in the unlocked state
- FIG. 3 is a side view schematically showing the internal structure of the door latch device 12 in the locked state.
- the left side in FIG. 1 is the front of the vehicle and the right side is the rear of the vehicle, but the orientation of the door latch device 12 may vary depending on the type of attachment vehicle, the attachment position, and the like.
- the door latch device (door lock device) 12 is fixed to the inner surface of the door panel that forms the rear end of the door D by a plurality of bolts (not shown), and closes the door D.
- the meshing unit 14 includes a body 20 including a synthetic resin body main body portion 17 fixed to the door D by bolts and a metal cover plate portion 18 fixed to the rear side of the body main body portion 17.
- the body 20 is accommodated in a case 22 constituting the lock case 16 with a part thereof exposed.
- the housing space formed by the body main body 17 and the cover plate 18, that is, the internal space of the body 20, is engaged with a striker (not shown) fixed to the vehicle body side to close the door.
- a holdable meshing mechanism 24 is accommodated.
- the body 20 is provided with a striker entry groove 26 into which the striker enters when the door is closed.
- the engagement mechanism 24 is supported by a longitudinal axis (not shown) in the body 20 and can be engaged with the striker, and an axis (not shown) in the body 20 that faces in the longitudinal direction.
- a known latching ratchet mechanism having a ratchet (not shown) that is supported and detachable from the latch 28 may be used.
- the striker on the vehicle body side enters the striker entry groove 26 and engages the latch 28, and the ratchet rotates in the opening direction with respect to the latch 28.
- the door D is constrained in the closed state by engaging in a direction that prevents the door D. Further, the engagement state between the latch 28 and the ratchet can be released and the closed state of the door D can be released by manual operation of a key cylinder (not shown), a lock knob (door knob), a door handle or the like.
- the lock case 16 accommodates the meshing unit 14 in a partially exposed state. In the internal space, in addition to the actuator unit 10, mechanical parts such as various levers (not shown), connection terminal groups, and the like are accommodated. Is done.
- the lock case 16 has a substantially L-shaped synthetic resin case 22 fixed to the body 20, a synthetic resin cover 30 that closes an accommodation space formed in the case 22, and the case 22. And a waterproof cover 32 made of synthetic resin for preventing intrusion of rainwater or the like.
- An auxiliary cover 38 that can be opened and closed by being pivoted to the vehicle inner side by a hinge 36 is provided at the lower portion of the cover 30.
- the auxiliary cover 38 is for covering the cable holding portion 40 formed at the lower end of the cover 30.
- the cable holding portion 40 is connected to a cable 41 connected from a lock knob (not shown) to a lock lever 44 arranged in the lock case 16 and from an inside handle (not shown) to an inside lever 46 arranged in the lock case 16.
- the cable 42 is disposed.
- Reference numeral S in FIG. 1 is a long band-shaped waterproof seal that is attached to the inner side surface of the cover 30 and prevents intrusion of rainwater or the like into the inner side of the vehicle.
- the actuator unit 10 includes a motor (electric motor) 48, a worm wheel 50, and a lock lever 44, which are accommodated inside the case 22.
- the motor (electric motor) 48 can be driven to rotate in any direction (forward / reverse direction) according to the direction of the supplied current, and the worm 52 is fixed to the drive shaft 48a.
- the worm 52 is a cylindrical member having a plurality of thread grooves on the outer peripheral surface, and is configured to have, for example, two thread grooves.
- the worm wheel (drive gear) 50 is a disc-shaped gear having inclined teeth on the outer peripheral surface.
- the shaft center of the support shaft portion 54 that is the center of rotation is orthogonal to the drive shaft 48 a of the motor 48, and the oblique teeth on the outer peripheral surface mesh with the worm 52. It is rotatably arranged inside.
- the lock lever 44 is pivotally supported by a support shaft 56 that is installed in parallel with the support shaft portion 54 of the worm wheel 50, so that the lock lever 44 can be rotated around the axis of the support shaft 56 inside the case 22. ing.
- the lock lever 44 is a manual operation of a lock knob provided on the inside of the door D constituting the manual operation means, a key cylinder provided on the outside of the door D, and a worm wheel driven by a motor 48 (worm 52). Based on the rotation of 50, for example, it is possible to turn to the unlock position shown in FIG. 2 and the lock position shown in FIG. 3 rotated counterclockwise from the unlock position.
- the cable 41 connected to the lock knob is connected to the connecting portion 44a protruding leftward from the support shaft 56 in FIGS. 2 and 3, and the key is connected to the operating arm portion 44b protruding rightward from the support shaft 56.
- Various linkage levers and key levers (not shown) connected to the cylinder are connected.
- the lock lever 44 is further provided with a first engagement arm 58 and a second engagement arm 60 that extend from the support shaft 56 in the centrifugal direction. As shown in FIGS. 4 and 5, the first engagement arm 58 and the second engagement arm 60 are arranged in the axial direction of the support shaft 56 so as to sandwich the rotation surfaces (side surfaces) 50 a and 50 b on both sides of the worm wheel 50. Are spaced apart from each other and at a predetermined angle with respect to the rotational direction of the lock lever 44.
- the first engagement arm (lever member) 58 extends so as to face and oppose one rotation surface 50a of the worm wheel 50, and a first protrusion (first engagement protrusion) provided on the rotation surface 50a. 62 (see FIG. 6A).
- the second engagement arm (lever member) 60 extends so as to face and oppose the other rotation surface 50b of the worm wheel 50, and a second protrusion (second engagement projection) provided on the rotation surface 50b. Part) 64 (see FIG. 6B).
- the first and second engagement arms 58 and 60 are set to a length that does not cross the rotational axis of the worm wheel 50 when the lock lever 44 rotates from the unlock position to the lock position and vice versa.
- the first and second protrusions 62 and 64 and the first and second engagement arms 58 and 60 transmit the rotation of the worm wheel 50 based on the drive of the motor 48 to the lock lever 44 to rotate.
- First and second power transmission mechanisms are configured.
- first and second power transmission mechanisms first, the configuration of the first and second protrusions 62 and 64 on the worm wheel 50 side will be described.
- FIG. 6 is a plan view showing the relationship between the first and second protrusions 62 and 64 and the first and second engagement arms 58 and 60 in a state where the lock lever 44 is in the unlock position.
- FIG. 6A is a plan view seen from one rotating surface 50a side of the worm wheel 50
- FIG. 6B is a plan view seen from the other rotating surface 50b side of the worm wheel 50.
- FIG. FIG. 7 is a plan view showing the relationship between the first and second protrusions 62 and 64 and the first and second engagement arms 58 and 60 as viewed from the one rotating surface 50a side of the worm wheel 50.
- 7A is a diagram showing a state in which the lock lever 44 is in the unlock position
- FIG. 7B is a diagram showing a state in which the lock lever 44 is in the lock position. 6 and 7, only the main parts of the worm wheel 50 and the lock lever 44 are clearly shown, and other elements are omitted.
- the first protrusion 62 protrudes on one rotating surface 50a of the worm wheel 50 so as to be able to contact the first engagement arm 58 of the lock lever 44 (see FIGS. 5 and 6A). ).
- the 2nd protrusion part 64 can contact
- the first protrusion 62 is a tapered substantially triangular (wave shape) first tooth portion 62a protruding from the support shaft portion 54 in the outer diameter direction. It has a configuration in which three pieces are provided at equal angles in the circumferential direction around the center.
- a curved surface (pressing surface) 66 that is a front end surface in the clockwise direction around the support shaft portion 54 in FIG. 6A and slightly curved outward is formed in the clockwise direction.
- a locking surface (abutment surface, stopper surface) 68 that is a rear side end surface and is slightly curved inward is provided.
- the curved surface 66 is curved outward with a first curvature
- the locking surface 68 is curved inward with a second curvature smaller than the first curvature.
- the second projecting portion 64 has a substantially triangular second tooth portion 64a protruding from the support shaft portion 54 in the outer diameter direction. It has a configuration with three circumferentially equiangular angles.
- Each second tooth portion 64a has a curved surface (pressing surface) 70 which is a front end surface in the clockwise direction around the support shaft portion 54 in FIG. 6B and is slightly curved outward, and the clockwise direction.
- a locking surface (contact surface, stopper surface) 72 that is a rear side end surface and is slightly curved inward is provided.
- the first and second protrusions 62 and 64 are in the axial direction of the support shaft portion 54 on the rotation surfaces 50a and 50b on both sides of the worm wheel 50. And symmetrically (line symmetric) arranged back to back with respect to the rotation surfaces 50a and 50b of the worm wheel 50.
- the first and second protrusions 62 and 64 are mirror-symmetric (surfaces) with respect to a virtual plane P (see FIG. 5) that includes the plate thickness center line of the worm wheel 50 and is orthogonal to the support shaft portion 54. (Symmetry).
- the predetermined first tooth portion 62a and the predetermined second tooth portion 64a are arranged so that most of them overlap each other, for example, in a plan view from the rotating surface 50a side in FIG.
- the curved surface 70 of the second tooth portion 64a corresponds to the locking surface 68 of the first tooth portion 62a (becomes back to back), and the curved surface 66 of the first tooth portion 62a corresponds to the first curved surface 66.
- the engaging surfaces 72 of the two tooth portions 64a are arranged so as to correspond (back to back).
- the first engagement arm 58 is slightly bent toward the second engagement arm 60 in the middle while extending in the centrifugal direction from the support shaft 56 in a plan view of FIG.
- a rotation end surface (tip surface) 58a that is slightly curved along an arc centered at 56 is provided.
- the second engagement arm 60 is slightly bent toward the first engagement arm 58 while extending in the centrifugal direction from the support shaft 56 in the plan view of FIG.
- a rotation end face (tip face) 60a that is slightly curved along an arc centered at 56 is provided.
- first and second power transmission mechanisms for example, as shown in FIGS. 2 and 7A, when the lock lever 44 is in the unlock position, the first engagement arm of the lock lever 44 is used. 58 is located in the rotation locus of the first protrusion 62 of the worm wheel 50, and the second engagement arm 60 is located outside the rotation locus of the second protrusion 64 of the worm wheel 50.
- the locking surface 68 of the first tooth portion 62 a is in contact with or close to the rotation end surface 58 a of the first engagement arm 58.
- the position (angular position) of the worm wheel 50 when the lock lever 44 is in the unlocked position and the door latch device 12 is in the unlocked state is first stopped. This is called a position (first angular position).
- the curved surface 66 of the first tooth portion 62a adjacent to the predetermined first tooth portion 62a is positioned adjacent to the corner portion of the rotating end surface 58a of the first engagement arm 58, for example, a slight interval t1. (See FIG. 7A). Further, in this state, as shown in FIG. 7A, at least a part of the locking surface 68 of the predetermined first tooth portion 62a is an arc centered on the axis of the support shaft 56 of the lock lever 44. Located on C1.
- the second tooth portion 64a of the second protrusion 64 corresponding to the first tooth portion 62a having the curved surface 66 located at the position separated from the rotation end surface 58a of the first engagement arm 58 by the interval t1 is At least a part of the locking surface 72 is located on an arc C ⁇ b> 2 centered on the axis of the support shaft 56 of the lock lever 44. That is, the arc C1 and the arc C2 are concentric circles centered on the support shaft 56, and the locking surface 68 of the first protrusion 62 and the locking surface 72 of the second protrusion 64 are positioned on the concentric circle. Will be. In this embodiment, as shown in FIG.
- the rotation end surface 58a of the first engagement arm 58 rotates along the arc C1, and the rotation end surface 60a of the second engagement arm 60 It is formed so as to rotate along the arc C2.
- the surface 72 is positioned along a concentric rotation locus of the rotation end surface 58 a of the first engagement arm 58 and the rotation end surface 60 a of the second engagement arm 60.
- the lock lever 44 When the key cylinder or the lock knob is locked from the unlocked position shown in FIGS. 2 and 7A, the lock lever 44 is moved in the locking direction (FIG. 7 (B) as shown in FIGS. 3 and 7B). In B), it rotates a predetermined angle in the counterclockwise direction) and stops at the locked position.
- the locking surface 68 of the first projection 62 and the locking surface 72 of the second projection 64 are concentric. Located on the top. For this reason, as shown in FIG. 7A, the first protrusion 62 of the worm wheel 50 stopped at the first stop position is rotated by the rotation end surface 58a of the first engagement arm 58 of the lock lever 44.
- the second protrusion 64 of the worm wheel 50 that is located outside the movement locus and is stopped at the first stop position is the rotation locus of the rotation end surface 60 a of the second engagement arm 60 of the lock lever 44. Located outside.
- the first and second engagement arms 58 and 60 are not 2
- the worm wheel 50 does not rotate in accordance with the rotation of the lock lever 44 by manual operation because it does not come into contact with and press against the two protrusions 62 and 64. Therefore, the worm wheel 50 and the motor 48 are prevented from rotating by the lock operation of the key cylinder and the lock knob, the resistance during the lock operation can be reduced with little force, and the motor 48 rotates in the reverse direction to generate power. It operates as a machine and can be prevented from deteriorating.
- the worm wheel 50 in a state where the worm wheel 50 is stopped at the first stop position, it is adjacent to the first tooth portion 62a having the locking surface 68 that is in contact with or close to the rotation end surface 58a of the first engagement arm 58.
- the curved surface 66 of the first tooth portion 62a is disposed close to the first engagement arm 58 with a slight interval t1.
- the first engagement arm 58 of the lock lever 44 is rotated by the first protrusion 62 of the worm wheel 50.
- the second engagement arm 60 is located outside the movement locus, is located within the rotation locus of the second protrusion 64 of the worm wheel 50, and the locking surface 72 of the predetermined second tooth portion 64a is The two engaging arms 60 are in contact with or close to the rotation end surface 60a.
- the position (angular position) of the worm wheel 50 when the lock lever 44 is in the locked position and the door latch device 12 is in the locked state is the second stop position ( (Second angular position).
- the curved surface 70 of the second tooth portion 64a adjacent to the predetermined second tooth portion 64a is the rotational end surface 60a of the second engagement arm 60. It is in the position adjacent to the corner
- first tooth portion 62a of the first protrusion 62 corresponding to the second tooth portion 64a having the curved surface 70 at the position separated from the rotation end surface 60a of the second engagement arm 60 by the interval t2 is At least a part of the locking surface 68 is located on an arc C4 centered on the axis of the support shaft 56 of the lock lever 44. That is, the arc C3 and the arc C4 are concentric circles centered on the support shaft 56, and the locking surface 72 of the second protrusion 64 and the locking surface 68 of the first protrusion 62 are located on the concentric circle. Will be. In this embodiment, as shown in FIG.
- the rotation end surface 58a of the first engagement arm 58 rotates along the arc C3, and the rotation end surface 60a of the second engagement arm 60 It is formed so as to rotate along the arc C4.
- the surface 68 is positioned along a concentric rotation locus of the rotation end surface 58 a of the first engagement arm 58 and the rotation end surface 60 a of the second engagement arm 60.
- the first protrusion 62 and the second protrusion 64 are symmetrical with each other back to back, so the interval t1 and the interval t2 are the same, and the arc C1 and the arc C3 are the same. And the arc C2 and the arc C4 have the same diameter.
- the locking surface 68 of the first projection 62 and the locking surface 72 of the second projection 64 are positioned on the concentric circles. is doing.
- the first protrusion 62 of the worm wheel 50 stopped at the second stop position is rotated by the rotation end surface 58a of the first engagement arm 58 of the lock lever 44.
- the second protrusion 64 of the worm wheel 50 that is located outside the movement locus and is stopped at the second stop position is the rotation locus of the rotation end surface 60 a of the second engagement arm 60 of the lock lever 44. Located outside.
- the first and second engagement arms 58 and 60 are Even if they come into sliding contact with the first and second protrusions 62 and 64, they do not contact and press, and the worm wheel 50 does not rotate with the rotation of the lock lever 44.
- the second tooth portion having the locking surface 72 that is in contact with (or close to) the rotating end surface 60a of the second engagement arm 60 is disposed close to the second engagement arm 60 via a slight interval t2.
- the door latch device 12 is unlocked by rotating the worm wheel 50 under the driving action of the motor 48 and rotating the lock lever 44 to the unlock position and the lock position.
- the operation of switching between the state and the locked state electrically will be described.
- FIG. 8 is an operation explanatory view of the worm wheel 50 and the lock lever 44 as viewed from the one rotating surface 50a side
- FIG. 8A is an explanatory view showing a state in which the lock lever 44 is in the unlock position
- 8B is an explanatory view showing a state in which the first protrusion 62 starts to contact the lock lever 44 by rotating the worm wheel 50 from the state shown in FIG. 8A
- FIG. 8C is an explanatory view showing a state in which the worm wheel 50 is further rotated from the state shown in FIG. 8B and the lock lever 44 is rotated
- FIG. FIG. 8E is an explanatory view showing a state where the worm wheel 50 is further rotated from the state shown in FIG.
- FIG. 8 and the lock lever 44 is further rotated.
- FIG. Rotate and lock Further rotates the over 44 is an explanatory view showing a state in which the locking position.
- FIG. 8 only the main parts of the worm wheel 50 and the lock lever 44 are clearly shown and other elements are omitted, but when the lock lever 44 is moved to the unlock position and the lock position, The above-mentioned linkage lever, key lever, and the like are also linked in response to this, and the door latch device 12 is switched between the unlocked state and the locked state.
- FIG. 8 in order to clearly show the relationship between the rotation angle of the first protrusion 62 due to the rotation of the worm wheel 50 and the rotation position of the lock lever 44, the three first teeth constituting the first protrusion 62 are shown. Of the part 62a, a mark M1 is attached to the tip of one first tooth part 62a, and a mark M2 is attached to the tip of another one tooth part 62a.
- the lock lever 44 when the lock lever 44 is in the unlocked position, for example, the lock lever 44 is rotated clockwise and stopped, and the first engagement arm 58 rotates.
- the moving end surface 58a is in contact with (or close to) the locking surface 68 of the predetermined first tooth portion 62a of the first protrusion 62 of the worm wheel 50 at the first stop position.
- the lock lever 44 rotates in the locking direction (counterclockwise direction, arrow B2 direction). As shown in FIG. 8D, when the rotation of the worm wheel 50 in the locking direction proceeds, the lock lever 44 further rotates in the locking direction.
- This unlocking operation proceeds in the opposite direction to the above-described locking operation.
- the lock lever 44 is in the locked position, for example, the lock lever 44 is counterclockwise.
- the rotation end surface 60a of the second engagement arm 60 is in the state of being rotated and stopped, and the predetermined second tooth portion 64a of the second protrusion 64 of the worm wheel 50 is in the second stop position. It is in contact with (or close to) the surface 72.
- the curved surface 70 of the second tooth portion 64a presses and rotates the lock lever 44 while slidingly contacting the upper portion of the inner side surface 60b of the second engagement arm 60. Therefore, the lock lever 44 rotates in the unlocking direction (clockwise direction, arrow A2 direction).
- the lock lever 44 has the second engagement arm 60 with the second protrusion. It moves out of the rotation locus of the part 64 and stops at the unlock position. Subsequently, the first engagement arm 58 enters the rotation locus of the first protrusion 62, and the locking surface 68 of the first protrusion 62 of the worm wheel 50 abuts on the rotation end surface 58a. Thereby, the rotation of the worm wheel 50 is stopped, the worm wheel 50 is stopped at the first stop position, the switching operation of the lock lever 44 to the unlock position is completed, and the door latch device 12 is unlocked.
- the protrusion of the worm wheel is used. Has a large operating angle until it comes into contact with the engagement arm of the lock lever, for example, about 230 °. For this reason, it was necessary to reduce the operation time by using a motor with a high output, but in order to absorb a large impact sound generated when the protrusion of the worm wheel comes into contact with the rotating end surface of the engagement arm. In addition, it is necessary to set an impact absorbing member between the rotation end face of the engagement arm and the protrusion of the worm wheel (see Patent Document 3).
- the locking surface of the first protrusion 62. 68 and the locking surface 72 of the second protrusion 64 are positioned along the rotation locus of the first engagement arm 58 and the rotation locus of the second engagement arm 60 of the lock lever 44. It is comprised so that it may be located on the concentric circle centering on the axial center of the spindle 56 of this.
- the first engagement arm 58 and the second engagement arm 60 are abutted (or close) at the unlock position shown in FIG. 7A and the lock position shown in FIG. 7B.
- the curved surfaces 66 and 70 of the first and second tooth portions 62a and 64a adjacent to the predetermined first and second tooth portions 62a and 64a are separated from each other by the slight intervals t1 and t2 as described above.
- the curved surfaces 66 and 70 of the first and second tooth portions 62a and 64a are connected to the first engagement arm 58 and the second engagement arm, respectively. It is set to intersect with the extension of the rotation trajectory of the arm 60. Therefore, as shown in FIG.
- the second engagement arm 60 which is already on the back side is that the locking surface 68 that is already following the curved surface 66 of the first protrusion 62 substantially follows the rotation trajectory of the first engagement arm 58.
- the locking end 72 of the second protrusion 64 is close to the rotating end surface 60a, and the rotating end surface 60a and the engaging surface 72 immediately come into contact with each other to complete the locking operation (FIG. 8 (E)
- the unlocking operation Accordingly, the operating angle of the worm wheel 50 from the start of the unlocking operation or the locking operation to the start of the rotation of the lock lever 44 and further to the stop of the rotation can be shortened.
- the locking operation and the unlocking operation can be reliably performed within the operation time, and the impact sound when the locking surfaces 68, 72 come into contact with the rotation end surfaces 58a, 60a can be reduced.
- the rotation of the lock lever 44 is started at about 13.87 ° from the start of the rotation of the worm wheel 50, and 128.46.
- the locking lever starts to rotate at about 64 ° and stops at about 230 °. The difference in operating angle is large.
- the locking surface 68 of the first protrusion 62 and the locking surface 72 of the second protrusion 64 are positioned on a concentric circle centered on the axis of the support shaft 56 of the lock lever 44.
- the lock lever 44 is unlocked or locked as shown in FIGS. 7A and 7B while securing the lock operation and the unlock operation at a small operation angle as described above.
- the first and second engagement arms 58 and 60 of the lock lever 44 are on the first locus of the worm wheel 50.
- the second protrusions 62 and 64 are not provided.
- the lock lever 44 does not drag the worm wheel 50, and the lock lever 44 can be smoothly rotated to the unlock position and the lock position. Dynamic movement is allowed.
- the fact that at least a part of the locking surfaces 68 and 72 are located concentrically means that at least a part of the outer shape of the locking surfaces 68 and 72 is arcs C1 and C2 in a plan view shown in FIG. , C3, and C4 only have to be formed along the shape, and it is not necessary that all the outer shapes of the locking surfaces 68 and 72 are on concentric circles.
- the first and second engagement arms 58 are provided on the side portions of the locking surfaces 68 and 72.
- 60 is preferably provided with an escape portion when it rotates.
- the first and second protrusions 62 and 64 of the worm wheel 50 are illustrated as having the first and second tooth portions 62a and 64a, respectively.
- the number of the two tooth portions 62a and 64a may be four or more.
- the predetermined first and second tooth portions are provided. It suffices that at least a part of the locking surfaces 68, 72 of 62a, 64a is concentric.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
12 ドアラッチ装置
44 ロックレバー
48 モータ
50 ウォームホイール
50a、50b 回転面
52 ウォーム
54 支持軸部
56 支軸
58 第1係合アーム
58a、60a 回動端面
60 第2係合アーム
62 第1突起部
62a 第1歯部
64 第2突起部
64a 第2歯部
68、72 係止面
Claims (5)
- モータの駆動によって回転可能なドライブギアと、所定の軸心回りに回動可能なロックレバーとを備え、前記モータの駆動及びドアに設けられる手動操作手段の操作のいずれかで前記ロックレバーをロック位置とアンロック位置とに回動させることで、ドアラッチ装置をロック状態とアンロック状態とに切り替えるアクチュエータユニットであって、
前記ドライブギアは、両側の回転面のうちの一方の第1回転面に形成された第1突起部と、他方の第2回転面に形成された第2突起部とを有し、
前記ロックレバーは、前記ドライブギアの前記第1回転面に対向して前記第1突起部と当接可能な第1係合アームと、前記第2回転面に対向して前記第2突起部と当接可能な第2係合アームとを有し、
前記第1突起部は、前記ドライブギアの第1回動方向に前記第1係合アームに当接する押圧面と、前記第1回動方向とは逆の第2回動方向に前記第1係合アームの回動端面に当接する係止面とを有し、該押圧面及び該係止面は、前記ドライブギアの周方向に沿って間隔をあけて交互に複数設けられ、
前記第2突起部は、前記ドライブギアの前記第2回動方向に前記第2係合アームに当接する押圧面と、前記第1回動方向に前記第2係合アームの回動端面に当接する係止面と、を有し、該押圧面及び該係止面は、前記ドライブギアの周方向に沿って間隔をあけて交互に複数設けられ、且つ該押圧面は前記第1突起部の前記係止面と背中合わせに、また該係止面は前記第1突起部の前記押圧面と背中合わせにそれぞれ設けられており、
前記ロックレバーが前記ロック位置にある場合に、前記ドライブギアが前記モータにより前記第2回動方向へ回転されると、前記第2突起部の前記押圧面がその回動方向で前記第2係合アームに当接することによって前記ロックレバーがアンロック位置に回動し、続いて前記第1突起部の係止面が前記第1係合アームの回動端面に当接して前記ドライブギアが第1停止位置に停止し、
前記ロックレバーが前記アンロック位置にある場合に、前記ドライブギアが前記モータにより前記第1回動方向へ回転されると、前記第1突起部の前記押圧面がその回動方向で前記第1係合アームに当接することによって前記ロックレバーが前記ロック位置に回動し、続いて前記第2突起部の係止面が前記第2係合アームの回動端面に当接して前記ドライブギアが第2停止位置に停止するものであり、
前記ドライブギアが前記第1停止位置にある場合に、前記第1係合アームの回動端面に当接する前記第1突起部の前記係止面は、前記第1係合アームの回動端面の円弧状の第1回動軌跡に沿って位置し、且つ該係止面に前記第1回動方向に後続する前記第1突起部の前記押圧面と背中合わせに設けられた前記第2突起部の前記係止面は、前記第1回動軌跡と同心の前記第2係合アームの回動端面の円弧状の第2回動軌跡に沿って位置し、
前記ドライブギアが前記第2停止位置にある場合に、前記第2係合アームの回動端面に当接する前記第2突起部の前記係止面は、前記第2回動軌跡に沿って位置し、且つ該係止面に前記第2回動方向に後続する前記第2突起部の前記押圧面と背中合わせに設けられた前記第1突起部の前記係止面は、前記第1回動軌跡に沿って位置することを特徴とするアクチュエータユニット。 - 請求項1記載のアクチュエータユニットにおいて、
前記ドライブギアが前記第1停止位置にある場合に、前記第1係合アームの回動端面に当接する前記第1突起部の前記係止面に前記第1回動方向に後続する前記第1突起部の前記押圧面は、前記第1回動軌跡の延長と交差し、
前記ドライブギアが前記第2停止位置にある場合に、前記第2係合アームの回動端面に当接する前記第2突起部の前記係止面に前記第2回動方向に後続する前記第2突起部の前記押圧面は、前記第2回動軌跡の延長と交差することを特徴とするアクチュエータユニット。 - 請求項1又は請求項2記載のアクチュエータユニットにおいて、
前記第1突起部は、前記ドライブギアの周方向に沿って等角度で配置された3枚の第1歯部を有し、各第1歯部の前記1回動方向側の端面に前記押圧面が、また各第1歯部の前記第2回動方向側の端面に前記係止面がそれぞれ設けられ、
前記第2突起部は、前記ドライブギアの周方向に沿って等角度で配置された3枚の第2歯部を有し、各第2歯部の前記2回動方向側の端面に前記押圧面が、また各第2歯部の前記第1回動方向側の端面に前記係止面がそれぞれ設けられていることを特徴とするアクチュエータユニット。 - 請求項1から請求項3のずれか一項記載のアクチュエータユニットにおいて、
前記第1突起部と前記第2突起部とは、前記ドライブギアの両側の回転面に背中合わせで配置された対称形状であることを特徴とするアクチュエータユニット。 - 請求項1に記載のアクチュエータユニットを備えることを特徴とするドアラッチ装置。
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GB1417439.5A GB2514978B (en) | 2012-04-05 | 2012-11-27 | Actuator unit and door latch device provided with actuator unit |
US14/390,659 US9222289B2 (en) | 2012-04-05 | 2012-11-27 | Actuator unit and door latch device provided with actuator unit |
KR1020147030655A KR101523940B1 (ko) | 2012-04-05 | 2012-11-27 | 액츄에이터 유닛 및 액츄에이터 유닛을 구비하는 도어 래치 장치 |
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WO2016021084A1 (ja) * | 2014-08-05 | 2016-02-11 | 三井金属アクト株式会社 | ドアラッチ用アクチュエータ |
US20160201362A1 (en) * | 2015-01-08 | 2016-07-14 | Mitsui Kinzoku Act Corporation | Latch device for trunk lid of vehicle |
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JP6492348B2 (ja) * | 2015-09-24 | 2019-04-03 | 三井金属アクト株式会社 | 自動車用ドアロック装置 |
CN115419344A (zh) * | 2022-08-30 | 2022-12-02 | 重庆长安汽车股份有限公司 | 一种智能电开门的控制装置及方法 |
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