WO1995016093A1

WO1995016093A1 - Door lock driving device

Info

Publication number: WO1995016093A1
Application number: PCT/JP1994/002030
Authority: WO
Inventors: Takashi Kobayashi; Hitoshi Amano; Hiroshi Takeyama; Kazuhiro Nakao
Original assignee: Nippondenso Co., Ltd.
Priority date: 1993-12-10
Filing date: 1994-12-01
Publication date: 1995-06-15
Also published as: DE69424654D1; EP0684356A4; EP0684356A1; DE69424654T2; EP0684356B1

Abstract

A cam (7) adapted to rotate when the rotating force of a motor (3) is transmitted thereto and operates an operation lever (8) via a torque receiving portion (8a) or (8b) of the operation lever (8) and stops its rotation when it is brought into abutment with a stopper wall (8d) or (8e) provided on the operation lever (8) in a state in which the operation lever (8) is moved to an unlocking position or a locking position. An intermediate speed reduction gear (5) for transmitting rotation torque to the cam (7) via a spring (6) continues to rotate while flexing the spring (6) even after the rotation of the cam is stopped, and comes to a halt in a gentle fashion. When the electrification of the motor (3) is stopped in this state, the intermediate speed reduction gear (5) is biassed in an opposite direction by virtue of the elastic energy (elastic force) stored in the spring (6) so as to be rotated in the opposite direction, whereby the cam (7) stops in a state in which it is released from the stopper wall (8d) or (8e) of the operation lever (8).

Description

Description Door lock drive

Technical field

The present invention relates to a door drive device for performing a door drive operation for locking and unlocking an automobile door.

Background art

Conventionally, a motor is provided with a pinion fixed to the motor shaft, and the motor is provided with an intermediate gear having an engagement projection and engaging with the pinion. An elastic body is arranged rotatably with respect to the intermediate gear around the rotation axis of the intermediate gear, and is fixed at one end to an output shaft for operating the operated lever of the door opening main body, and at the other end. Is provided with a swing member that has an engagement protrusion and that moves between a first position (one stop) and a second position (the other stop). The engagement projection and the engagement projection of the swing member are arranged so as to be able to engage with and disengage from the elastic body, respectively, and transmit the motor torque from the intermediate gear to the swing member directly via the elastic body. As a result, the intermediate gear does not need to be turned during manual release operation, and it can be released with a small operating force. Operation can and this performing and not on the control sound Doaro click drive equipment (Hei 2 - 4 9 8 8 1 JP) has been proposed.

However, in the above-described door drive device, the elastic body is a coil spring, and one of two radially protruding tips engages with the engaging projection of the intermediate gear, and the other swinging member. The angle between the tips of the brackets is approximately 180 degrees, and it is elastically rotatable on the intermediate gear with the intermediate shaft as the center. The intermediate gear is rotationally driven via a pinion by the rotation of the motor, and the engagement protrusion of the intermediate gear comes into contact with one of the elastic members, and the intermediate gear rotates. And the elasticity The body starts to bend, and the other end of the elastic body contacts the engaging projection of the swinging member, and swings the swinging member until it contacts one of the toe collars, energizing the motor. After stopping the gear, the elastic force of the elastic body causes the intermediate gear to rotate approximately 180 degrees through the engagement protrusion of the intermediate gear, so that the intermediate gear and the pinion move between the intermediate gear and the pinion. There is a problem that gear noise is generated.

Therefore, the present invention has been made based on the above-mentioned circumstances, and the motor is operated to be locked or unlocked, the power supply to the motor is stopped, and then the intermediate gear is rotated by the elastic body. It is an object of the present invention to provide a door lock drive device capable of reducing gear noise generated at the time of driving. Disclosure of the invention

In order to achieve the above object, according to the present invention, there is provided a motor that rotates when energized, a rotating member that freely rotates by receiving the rotating force of the motor, and a rotating torque of the rotating member. It is connected to a torque transmitting member that transmits torque and a door lock body that locks or unlocks the door, and moves to the locking side or unlocking side by receiving rotational torque from the torque transmitting member. Accordingly, when the door body is actuated, the first pressing portion pressed by the torque transmitting member and the second pressing portion formed on the distal end portion moved in a substantially arc shape are formed. An actuating member having a pressing portion, a regulating means for regulating the movement of the actuating member against rotational torque received from the torque transmitting member, The elastic member disposed in the torque transmission path When the motor is energized, the torque transmitting member presses a first pressing portion of the operating member to move the operating member in the direction of the restricting means, and the movement of the operating member is controlled by the restricting member. The torque transmission member is once separated from within the substantially arc-shaped movement trajectory of the operating member, and then the second torque transmission member flexes the elastic member. After the power supply to the motor is stopped by pressing the pressing member, the torque transmission is performed by the elasticity stored in the elastic member. A door drive device characterized in that the member separates from the substantially arc-shaped movement trajectory of the operating member is adopted.

In the door lock driving device having this configuration, the operating member connected to the door opening main body is moved in a substantially arc shape with the first pressing portion pressed by the torque transmitting member. It has a second pressing portion formed at the tip end, and piles the rotating torque received by the torque transmitting member, and the regulating member regulates the movement of the operating member, and the gap between the rotating member and the operating member. In order to dispose the elastic member in the torque transmission path, when the motor is energized, the torque transmission member presses the first pressing portion of the operating member and moves the operating member in the direction of the regulating means. The torque transmitting member once separates from the substantially arc-shaped movement trajectory of the operating member, and then the torque transmitting member presses the second pressing member while bending the elastic member. After the power supply to the motor is stopped, the elasticity As a result, the torque transmission member is separated from the substantially arc-shaped movement trajectory of the operating member, so that the motor is operated to lock or unlock, and the power to the motor is stopped. Since the rotating member only slightly rotates due to the elasticity, the gear noise generated when the rotating member is rotated by the elastic member can be reduced.

Further, in addition to the above-described configuration, the motor further includes a manual operating means connected to the door body or the operating member, and the motor is energized while the manual operating means is locked in a locked state. In this case, the impact applied to the rotating member by the elastic member being elastically deformed by receiving the rotating torque of the rotating member with respect to the operating member whose movement is prohibited by the manual operation means. After the power supply to the motor is stopped and the torque transmission member is separated from the operation member by the elasticity stored in the elastic member, the motor is stopped. A door lock drive device is adopted.

In this configuration, even if the manual operation means is locked in a locked state and the motor is energized, the operation member is prohibited from moving by the manual operation means. Then, the elastic member is elastically deformed by receiving the rotating torque of the rotating member, so that the impact force applied to the rotating member via the torque transmitting member is reduced. In addition, after the power supply to the motor is stopped, the torque transmission member stops with the torque transmission member detached from the operating member due to the elasticity stored in the elastic member, and thereafter, The operation force when operating the door lock body by operation is reduced.

In addition to the above configuration, the rotating member includes a pinion that is driven to rotate by the motor and an intermediate reduction gear that rotates while meshing with the pinion. The transmission member is provided so as to be rotatable relative to the intermediate reduction gear around a center axis of the intermediate reduction gear, and one end of the elastic member is locked to the intermediate reduction gear, and the other end is provided. A door / mouth drive device characterized in that it is a torsion coil spring locked to the torque transmission member.

In this configuration, the rotational force of the motor is transmitted to the intermediate reduction gear through the pinion, and the torque is further transmitted through the coil spring, which is an elastic member. It is transmitted to the transmission member. Then, by receiving the rotation torque from the torque transmitting member, the operating member moves to the locking side or the unlocking side, whereby the door to which the operating member is connected is connected. The door is locked or unlocked by the body of the door.

Since the movement of the operating member that has moved to the locking side or the unlocking side is restricted by the restricting means, one end is locked to the intermediate reduction gear and the other end is locked to the torque transmission member. The twisted coil spring rotates with one end receiving the torque of the intermediate reduction gear while the other end is fixed. That is, the torsion coil spring is twisted in the rotational direction of the intermediate reduction gear while accumulating elasticity. Thereby, the impact force applied to the pinion via the torque transmitting member and the intermediate reduction gear when the movement of the operating member is restricted by the restricting means is reduced. As a result, the rotating member pinion and the intermediate reduction gear can be made of inexpensive resin, and the entire device can be manufactured. You can reduce the cost of your body.

Also, when the door lock body is manually operated via the operating member after the power supply to the motor has been stopped, the torque transmission member is resiliently stored in the torsion coil spring. Stops when it is detached from the operating member, reducing the operating force during manual operation.

In addition to the above configuration, the rotating member includes a pinion that is driven to rotate by the motor and an intermediate reduction gear that rotates in mesh with the pinion. The elastic member is provided so as to be rotatable relative to the intermediate reduction gear with a central axis of the reduction gear as a rotation center, and one end of the elastic member is locked to the intermediate reduction gear, and the other end is connected to the torque transmitting member. A door-to-door drive device, which is characterized by a threaded coil spring that is locked.

In this configuration, the rotational force of the motor is transmitted to the intermediate reduction gear via a pinion, and further through an elastic member made of an elastic polymer material such as an elastomer or an elastic material such as rubber. The torque is transmitted to the torque transmission member. The operating member moves to the locking side or the unlocking side in response to the rotation torque from the torque transmitting member, and thereby the door opening body to which the operating member is connected. Locks or unlocks the door.

Since the movement of the operating member that has moved to the locking side or the unlocking side is restricted by the restricting means, the elastic member receives the rotational torque of the intermediate reduction gear while partly fixed, and stores the elasticity while receiving elastic torque. It is twisted in the direction of rotation of the reduction gear. Thus, when the movement of the operating member is restricted by the restricting means, the impact force applied to the pinion via the torque transmitting member and the intermediate reduction gear is reduced. As a result, the cost down effect associated with the resinization of the pinion and the intermediate reduction gear is the same as the effect described above.

Further, in addition to the above configuration, the torque transmission member is integrally formed with the elastic member by an elastic polymer material such as an elastomer or an elastic material such as rubber. A hook drive is used. According to this configuration, the torque transmission member is integrally formed with the elastic member by using an elastic polymer material such as an elastomer or an elastic material such as rubber. In addition to the effect obtained above, the present invention having an effect of further reducing the number of parts is provided by a pinion that is rotationally driven by a motor and is combined with this pinion. An intermediate reduction gear to which the rotational force is transmitted, a projection that rotates integrally with the intermediate reduction gear, and a torque transmission part to which one end receives the torque from the projection to move. A torque transmitting member having the other end fixed to the torque transmitting portion and fixed to an output portion for operating a door opening; and A regulating member that stakes the transmission torque to restrict the movement of the torque transmission member. The projection is provided between the projection of the intermediate reduction gear and the torque transmission section of the torque transmission member, and is bent by being sandwiched by both. An elastic body that generates a biasing force that separates the transmission part from the transmission part is adopted as technical means.

In this configuration, the torque of the intermediate high-speed gear is transmitted to the torque transmitting member via the projection and the torque transmitting portion, but the movement of the torque transmitting member is regulated by the regulating portion. When regulated, the elastic body located between the protrusion and the torque transmitting section is bent, and generates an urging force for separating the two. As a result, when the motor is stopped, the impact force applied to the pinion and the intermediate reduction gear is reduced, so that the pinion and the intermediate gear can be made of resin. In addition, the urging force generated in the elastic body separates the projection from the torque transmitting section, thereby reducing the operating force when manually operating the door opening.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view showing the internal structure of the door lock driving device according to the first embodiment. FIG. 2 is a side sectional view of the door lock driving device (No. 1 Example) Figure 3 is a graph showing the load characteristics of the door lock body (first embodiment). FIG. 4 is an explanatory view of the operation of the door lock driving device (first embodiment). FIG. 5 is an explanatory view of the operation of the door lock driving device (first embodiment). FIG. 6 is an explanatory diagram of the operation of the door drive device (first embodiment). FIG. 7 is an explanatory diagram of the operation of the door drive device (first embodiment). FIG. 8 is an explanatory diagram of the operation of the door drive device (first embodiment). FIG. 9 is a diagram for explaining the operation of the door drive device (first embodiment). FIG. 10 is an explanatory view of the operation of the door drive device in the prone position in which the manual knob is restrained (first embodiment). FIG. 11 is an explanatory view of the operation of the door lock driving device in a state where the manual knob is restrained (first embodiment). FIG. 12 is an explanatory view of the operation of the door opening / closing drive device in a state where the manual knob is restrained (first embodiment). FIG. 13 is an explanatory view of the operation of the door lock driving device in a state where the manual knob is restrained (first embodiment). FIG. 14 is a plan view showing the internal structure of the door drive device according to the second embodiment. FIG. 15 is a cross-sectional view and a plan view of an intermediate reduction gear, a cam, and an elastic body (second embodiment). FIG. 16 is a perspective view of an intermediate reduction gear, a cam, and an elastic body (second embodiment). FIG. 17 is a plan view showing the internal structure of the door drive device according to the third embodiment. FIG. 18 is a cross-sectional view and a plan view of an intermediate reduction gear, a cam, and an elastic body (third embodiment). FIG. 19 is a perspective view of an intermediate reduction gear, a cam, and an elastic body (third embodiment). FIG. 20 is a plan view showing the internal structure of the door lock driving device according to the fourth embodiment. FIG. 21 is a sectional view taken along the line II-II in FIG. FIG. 22 is an explanatory diagram of the operation of the door drive device (fourth embodiment). FIG. 23 is an explanatory view of the operation of the door drive device (fourth embodiment). FIG. 24 is a diagram for explaining the operation of the door drive device (fourth embodiment). FIG. 25 is an explanatory view of the operation of the door lock drive device (fourth embodiment). FIG. 26 is an explanatory diagram of the operation of the door lock drive device (fourth embodiment). Figure 27 is an explanatory diagram of the operation of the door drive device (fourth embodiment). Example). Figure 28 is an explanatory diagram of the operation of the door lock driving device (fourth embodiment). FIG. 29 is a plan view showing a door lock driving device (fifth embodiment). FIG. 30 is a plan view showing a door drive device (sixth embodiment). BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the door drive device of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing the internal structure of the door drive device 1, and FIG. 2 is a side sectional view of the door drive device 1. 1 (b) and FIGS. 4 (b) to 13 (b) are cross-sectional views along the line 11 in FIG.

The door-opening drive device 1 of this embodiment is an actuating unit for operating a door lock body DL for locking or unlocking a door, and includes a lower case 2a and a door case. A case 2 divided into two parts with a top case 2 b, a motor 3 that can rotate forward and reverse, a pinion 4 that is rotationally driven by the motor 3, and a pinion 4 that rotates in conjunction with the pinion 4 The intermediate reduction gear 5, a screw coil spring 6 (hereinafter abbreviated as “spring 6”) mounted on the intermediate reduction gear 5, and an intermediate gear via the spring 6. It is composed of a cam 7 to which the rotational force of the reduction gear 5 is transmitted, an operating lever 8 that operates by receiving the rotating torque of the cam 7, an output lever 9 that is interlocked with the operating lever 8, and the like. .

The door lock body DL is connected to the door lock driving device 1 via a locking lever 10 for locking and unlocking. □ The locking lever 10 is located between the lock position for locking the door around the fulcrum shaft 11 provided on the door body DL and the unlock position for unlocking the door. The door opening drive device 1 is provided to be rotatable. As shown in FIG. 3, the door lock body DL is operated by a turnover spring 12 mounted between the door lock body 10 and the P-locking lever 10 as shown in FIG. During operation, the load is reversed and the door opening drive device 1 is urged in the driving direction. It has the following characteristics.

The motor 3 is energized via the terminal 13 (see Fig. 2) taken out of the case 2, and the direction of rotation is reversed between locking and unlocking.

The pinion 4 has a D-cut hole formed at the rotation center thereof, and is detachably locked to a D-cut portion formed on the rotation shaft 3 a of the motor 3, so that the rotation shaft 3 a And rotate together.

As shown in FIG. 2, the intermediate reduction gear 5 has a boss 5a rotatably fitted to a shaft 14 serving as a center of rotation, and a coupling portion 5b which engages with the pinion 4, as shown in FIG. It consists of a locking wall 5c protruding in an arc shape along the axial direction (parallel to the shaft 14) on the inner periphery of the joint 5b.

The shaft 14 is press-fitted and fixed to the lower case 2a at one end and to the upper case 2b at the other end in a state perpendicular to the rotating shaft 3a of the motor 3 respectively.

As shown in FIG. 1 (b), the spring 6 is arranged along the inner peripheral surface of the joint 5b, passing between the joint 5b of the intermediate reduction gear 5 and the locking wall 5c. At the same time, both ends are bent inward (toward the center), and are attached to the intermediate reduction gear 5 with the locking wall 5c of the intermediate reduction gear 5 inserted between the both ends. Have been.

As shown in FIG. 2, the cam 7 is rotatably fitted to the shaft 14 so as to face the intermediate reduction gear 5 in the axial direction. On one end side of the cam 7 facing the intermediate reduction gear 5, an arc-shaped locking wall 7 a around the shaft 14 is protruded in the axial direction. However, the locking wall 7a is located between the boss portion 5a of the intermediate reduction gear 5 and the locking wall 5c in the radial direction around the shaft 14 and the The arc A is set smaller than the locking wall 5c. As shown in FIG. 1 (b), the cam 7 has a state in which the locking wall 7 a is inserted between both ends of the spring 6, that is, around the shaft 14. It is fitted to the shaft 14 at a position overlapping the intermediate deceleration gear 5 in the direction. The operating lever 8 is provided with an output shaft 15 fixed at one end to an insert, and the two shafts are pivoted about the output shaft 15 as a center of rotation. It is provided so as to be rotatable within a predetermined range regulated by pars 16 and 17 (regulating means).

The output shaft 15 is a lower case 2a and an atuno. It is rotatably supported by case 2b.

The actuating lever 8 is provided with torque receiving portions 8a and 8b at its tip which expands substantially in a fan shape with the output shaft 15 as a center. The portions 8a and 8b move according to the cam shape while sliding on the side wall surface of the cam 7 as the cam 7 rotates. It rotates between the locked position (position shown in Fig. 1) and the unlocked position (position shown in Fig. 6 to Fig. 9) with 15 as the center of rotation.

The torque receiving portions 8a and 8b are provided with a torque receiving portion 8a on the locking side for receiving the rotating torque of the cam 7 when the door is locked by the door lock body DL. It consists of an unlocking torque receiver 8b that receives the torque of rotation of the cam 7 when the door is unlocked by the lock body DL. A curved recess 8c is formed between the torque receiving portion 8a on the locking side and the torque receiving portion 8b on the unlocking side to prevent interference with the cam 7. .

The outer wall surface that is more continuous than the torque receiving portion 8a on the locking side and the torque receiving portion 8b on the unlocking side will prevent the cam 7 from rotating when the operating lever 8 rotates to the locked or unlocked position. When it enters the rotation locus and comes into contact with the side wall surface of the cam 7, it functions as the towel walls 8 d and 8 e that regulate the rotation of the force 7.

Note that the storage walls 8d and 8e move in a substantially arc shape with the output shaft 15 as a center.

On the side wall surface of the operating lever 8 connected to the stop walls 8d and 8e, the operating lever 8 receives the rotating torque of the cam 7 to lock or unlock. Locking grooves 8f and 8g are provided to abut against the collar when rotating to. The stops, ° 1G, and 17 are provided symmetrically with respect to the straight line connecting the output shaft 15 and the shaft 14. The stoppers 16 and 17 are formed of an elastic member (for example, made of rubber) so as to absorb an impact when the operating lever 8 comes into contact.

The output lever 9 is formed in an L-shape, and a fitting hole (not shown) formed in a bent portion thereof is formed in a fitting portion 15 a (FIG. 2) and rotate together with the output shaft 15 (operating lever 8). One end of the output lever 9 is connected to a manual knob 18 for manually operating the door lock body DL by the occupant, and the other end is a locking lever 1 of the door lock body DL. It is tied to 0 (see Figures 1 and 2).

Next, the operation of the present embodiment will be described.

Here, the operation at the time of unlocking will be described as a representative.

In the locked state shown in FIG. 1, since the operating lever 8 is in the locked position, the torque receiving portion 8 b on the unlocking side of the operating lever 8 is located within the rotation locus of the cam 7.

When the motor 3 is energized in the state described above, the pinion 4 is driven to rotate by the motor 3 and the intermediate reduction gear 5 that meshes with the pinion 4 rotates. The rotational torque of the intermediate reduction gear 5 is transmitted to the cam 7 via the springs 6 respectively locked on the locking wall 5c of the intermediate reduction gear 5 and the locking wall 7a of the cam 7. Accordingly, the cam 7 rotates together with the intermediate reduction gear 5 and the spring 6 in the unlocking direction (counterclockwise in FIG. 1).

After the cam 7 comes into contact with the torque receiving portion 8 b on the unlocking side of the operating lever 8 (see FIG. 4), the torque receiving portion 8 b on the unlocking side moves toward the cam 7 as the cam 7 rotates. By moving in accordance with the cam shape while sliding on the wall surface, the operating lever 8 rotates from the locked position to the unlocked position side around the output shaft 15. When the cam 7 is released from the unlocking side tonolek receiving portion 8b, the operating lever 8 has a force that has not yet reached the unlocking position (see FIG. 5). Even after the cam 7 comes off, it rotates due to the inertia force and the load characteristics of the lock shown in Fig. 3, and the locking groove 8g comes into contact with the stopper 17 and stops. .

The cam 7 that has been released from the torque receiver 8b on the unlocking side rotates until it comes into contact with the stop wall 8d of the operating lever 8 (see Fig. 6). . The rotation of the cam 7 is stopped by contacting the stop wall 8d, but the intermediate low-speed gear 5 does not bend the spring 6 locked on the locking wall 5c. However, it further rotates and stops gently (see Fig. 7 (b)).

When power to the motor 3 is stopped in this state, the intermediate low-speed gear 5 is turned in the opposite direction to the rotation direction at the time of unlocking by the elastic energy (elasticity) stored in the spring 6. (Clockwise in Fig. 1) (see Fig. 8 (b)). Even after the elastic energy stored in the spring 6 has disappeared, the intermediate reduction gear 5 and the cam 7 are moved together by the inertial force obtained between FIGS. Then, it rotates further, and stops with the cam 7 separated from the stopper wall 8d force of the operating lever 8 (see FIG. 9).

As described above, the operating lever 8 connected to the door lock main body DL is moved substantially in an arc shape with the unlocking side torque receiving portion 8b pressed by the cam 7. The stopper 17 has a stop wall 8d formed at the tip end thereof, and the stopper 17 restricts the movement of the operating lever 8 against the rotating torque received from the cam 7, thereby preventing the pinion from moving. Since the screw spring 6 is arranged in the torque transmission path between the motor 4 and the operating lever 8, when the motor 3 is energized, the cam 7 releases the operating lever 8. Pressing the lock-side tongue receiving portion 8b and moving the operating lever 8 in the direction of the stopper 17, the cam 7 is once separated from the substantially arc-shaped movement orbit of the operating lever 8. Then, the operating lever 8 presses against the stopper wall 8 d while bending the torsion spring 6 _, After the power supply to the motor 3 is stopped, the cam 7 is actuated by the elasticity stored in the torsion spring 6 from the position within the substantially circular movement trajectory of the lever 1-8. Since the motor 3 is released, the motor 3 is operated and unlocked, and the power to the motor 3 is stopped. After that, the intermediate reduction gear 5 is driven by the elasticity of the torsion spring 6. It rotates slightly Therefore, the gear noise generated when the intermediate reduction gear 5 is rotated by the torsion spring 6 can be reduced. In the same way as when unlocking, the motor 3 is operated and locked, and the power to the motor 3 is stopped.Then, due to the elasticity of the screw spring 6, Since the intermediate gear 5 only slightly rotates, the gear noise generated when the intermediate reduction gear 5 is rotated by the torsion spring 6 can be reduced.

Even if the cam 7 comes into contact with the stopper wall 8 d of the operating lever 8 to restrict the rotation of the cam 7 itself, the intermediate reduction gear 5 rotates while bending the spring 6. Can stop gently. That is, when the cam 7 comes into contact with the stop wall 8 d of the operating lever 8, the impact force can be absorbed by the bending of the spring 6. As a result, the impact force applied to the intermediate reduction gear 5 and the pinion 4 when the rotation of the cam 7 stops is reduced, and the intermediate reduction gear 5 and the pinion 4 can be made of resin. As a result, cost down can be achieved.

Also, after the power to the motor 3 is stopped, the cam 7 stops with the operating lever 8 detached from the stop wall 8d of the operating lever 8, so that when the occupant manually operates the manual knob 18 In addition, since the operating lever 8 can be operated without sliding the cam 7, the operating force of the manual knob 18 is reduced.

The same effect as unlocking can be obtained for locking operation. Next, the operation when the manual knob 18 is restrained at the lock position will be described with reference to FIGS. 10 to 13.

When the motor 3 is energized while the manual knob 18 is locked at the lock position, the rotational force of the motor 3 causes the cam 7 to be unlocked together with the intermediate reduction gear 5 (Fig. 1). (Counterclockwise direction of 0) and comes into contact with the torque receiver 8b on the unlocking side of the operating lever 8. Actuating lever 8 receives rotational torque from cam 7, but moves to unlocking side because manual knob 18 is restrained. Therefore, the cam 7 stops while abutting on the torque receiving portion 8b on the unlocking side of the operating lever 8 (see FIG. 10).

By stopping the rotation of the cam 7, the intermediate reduction gear 5 further rotates while moving the spring 6, and stops gently (see FIG. 11).

In this state, when the power supply to the motor 3 is stopped, the intermediate reduction gear 5 is rotated in the opposite direction to the unlocking direction by the elastic energy (elasticity) stored in the spring 6. Direction (clockwise in Fig. 12). Even after the elastic energy stored in the spring 6 has been extinguished, the inertia force causes the intermediate deceleration gear 5 to continue rotating, causing the cam 7 that had been stopped up to that point to stop rotating. It rotates together with the intermediate reduction gear 5 and comes off from the torque receiving portion 8b on the unlocking side of the operating lever 8 and stops (see Fig. 13).

In this way, even when the manual knob 18 is locked at the lock position, the cam 7 abuts the torque receiving portion 8 b on the unlocking side of the operating lever 8. After the rotation of the force 7 itself is regulated, the intermediate reduction gear 5 can rotate and stop gently while moving the spring 6. Therefore, the impact force applied to the intermediate reduction gear 5 and the pinion 4 due to the stop of the cam 7 is reduced. Also, after the motor 3 is de-energized, the cam 7 comes off from the torque receiving portion 8b on the unlocking side of the operating lever 8 and stops. When the occupant manually operates the knob 18, the operating lever 8 can be operated without sliding the cam 7, thereby reducing the operating force of the manual knob 18. It will be.

Next, a second embodiment of the present invention will be described.

FIG. 14 is a plan view showing the internal structure of the door opening / closing drive device 1. In the door opening drive device 1 of the present embodiment, the coil spring 6 arranged as an elastic member between the intermediate reduction gear 5 and the cam 7 in the first embodiment is used instead of the coil spring 6. An elastic body 19 (see FIGS. 15 and 16) made of an elastic polymer material such as an elastomer or an elastic material such as rubber is used. The components other than the intermediate reduction gear 5, the cam 7, and the elastic body 19 are the same as those in the first embodiment, and the description thereof will be omitted.

Hereinafter, the intermediate reduction gear 5, the cam 7, and the elastic body 19 will be described with reference to FIG. 15 and FIG. FIG. 15 is a cross-sectional view (a) and a plan view (b) of a state in which the intermediate high-speed gear 5, the cam 7, and the elastic body 19 are combined, and FIG. 16 is an intermediate reduction gear 5, the cam 7 3 is a perspective view and an overall perspective view of the elastic body 19 and FIG.

The intermediate reduction gear 5 has a boss portion 5a and a joint portion 5b as in the first embodiment, and restricts the movement (rotation) of the elastic body 19 on the inner peripheral surface of the joint portion 5b. An abutment surface 5 d is formed. The contact surface 5 d is formed on two sides corresponding to the rotation direction of the motor 3 (forward / reverse). Also, on one side surface (the upper surface in FIG. 16 (c)) of the intermediate high-speed gear 5, there is formed a step portion 5e which is depressed inward over the entire circumference.

As shown in FIG. 16 (a), the cam 7 has a disk portion 7c formed at a predetermined radius around a fitting hole 7b fitted to the shaft 14 as shown in FIG. A bar-shaped projection 7d is provided at a position near the outer periphery of the disk portion 7c. The cam 7 is rotatably fitted into the shaft 14 by the fitting hole 7 b and is fitted to the step portion 5 e of the intermediate reduction gear 5. . At this time, a slight gap is formed between the disk portion 7c and the outer peripheral surface of the step portion 5e so that the outer peripheral surface does not interfere with the inner peripheral surface of the step portion 5e (see FIG. 16 (d)).

The elastic body 19 is rotatably fitted to the boss 5 a of the intermediate reduction gear 5, and is disposed on the inner peripheral portion of the intermediate reduction gear 5. As shown in FIG. 16 (b), a flat outer peripheral wall 19a is formed on the elastic body 19, and the outer peripheral wall 19a is formed on the intermediate reduction gear 5 as shown in FIG. It receives the rotational force of the intermediate reduction gear 5 while in contact with the contact surface 5d. In addition, the elastic body 19 is provided with a fitting hole 19b in which the protrusion 7d provided on the cam 7 is fitted. 1 G

The operation (operation at the time of unlocking) of the present embodiment will be described.

The pinion 4 is rotationally driven by the motor 3, and the pinion-; the intermediate reduction gear 5 rotates. The rotation of the intermediate reduction gear 5 is transmitted to the cam 7 via the elastic body 19, so that the intermediate reduction gear 5 and the elastic body 19 are transmitted to the cam 7. Rotate together in the unlocking direction

After the cam 7 comes into contact with the torque receiving portion 8b on the unlocking side of the operating lever 8, the torque receiving portion 8b on the unlocking side moves according to the shape of the cam. Then, the operating lever 8 rotates from the locked position to the unlocked position around the output shaft 15. The cam 7 released from the torque receiving portion 8b on the unlocking side by the rotation of the operating lever 8 until the cam 7 comes into contact with the stopper wall 8d of the operating lever 8. Rotate. The rotation of the cam 7 stops when it comes into contact with the stopper wall 8d, or the intermediate reduction gear 5 rotates further while flexing the elastic body 19 and stops at a gentle force. .

When power supply to motor 3 is stopped in this state, intermediate reduction gear 5 rotates in the direction opposite to the rotation direction at the time of unlocking due to the elastic energy (elasticity) stored in elastic body 19. You. Even after the elastic energy stored in the elastic body 19 has disappeared, the intermediate reduction gear 5 further rotates together with the elastic body 19 and the cam 7 due to the inertial force, and 7 stops with the operating lever 8 detached from the stopper wall 8 d of the operating lever 8.

As described above, the operating lever 8 connected to the door lock body DL has the unlocked torque receiving portion 8b which is pressed by the cam 7 and moves substantially in a circular arc. Has a toe wall 8d formed at the leading end thereof, and the toe stopper 17 restricts the movement of the operating lever 8 against the rotating torque received from the cam 7. In order to dispose the elastic body 19 in the torque transmission path between the pinion 4 and the operating lever 8, the cam 7 operates when the motor 3 is energized. Pressing the part 8b to move the operating lever 8 in the direction of the shaft 17 while the cam 7 is once separated from the substantially circular movement trajectory of the operating lever 8, and then The operating lever 8 bends the elastic body 19 while the After the power to the motor 3 is stopped by pressing the upper wall 8 d, the cam 7 is actuated by the elasticity stored in the elastic body 19. The motor 3 is released from within the substantially arc-shaped movement trajectory of the motor, so that the motor 3 is operated and unlocked, and the power supply to the motor 3 is stopped. Since the intermediate reduction gear 5 only rotates slightly, the gear noise generated when the intermediate reduction gear 5 is rotated by the elastic body 19 can be reduced. In the same manner as unlocking, when the motor 3 is operated and locked, the power supply to the motor 3 is stopped, and then the elastic body 19 is used for locking. Since the intermediate reduction gear 5 rotates only slightly, the gear noise generated when the intermediate reduction gear 5 is rotated by the elastic body 19 can be reduced.

In addition, even if the cam 7 operates and the rotation of the cam 7 itself is restricted by contacting the storage wall 8d of the cylinder 18, the intermediate reduction gear 5 does not cause the elastic body 19 to bend. To stop slowly. As a result, the impact force applied to the intermediate reduction gear 5 and the pinion 4 when the rotation of the cam 7 is stopped is reduced, so that the intermediate reduction gear 5 and the pinion 4 are removed similarly to the first embodiment. Pinion 4 can be converted to resin.

Also, after the motor 3 is turned off, the occupant manually operates the manual knob 18 because the cam 7 stops with the operating lever 8 detached from the stop wall 8 d of the operating lever 8. In this case, since the operating lever 8 can be operated without sliding the cam 7, the operating force of the manual knob 18 is reduced. The same effect as in the first embodiment can be obtained even when the motor 3 is energized while the manual knob 18 is restrained at the lock position. .

Next, a third embodiment of the present invention will be described.

FIG. 17 is a plan view showing the internal structure of the door opening / closing drive device 1. In the door lock drive device 1 according to the present embodiment, the cam 7 is made of an elastic polymer material such as an elastomer or an elastic material such as rubber, and will be described in a second embodiment. It is integrated with the elastic body 19 described.

FIGS. 18 (a) and 18 (b) show a cross-sectional view and a plan view of a state where the cam 7 integrated with the elastic body 19 is assembled to the intermediate reduction gear 5. Also, a perspective view of the cam 7 integrated with the elastic body 19, a perspective view of the intermediate reduction gear 5, and a perspective view of a state where the cam 7 is assembled to the intermediate reduction gear 5 are shown in FIG. 9 Shown in (a), (b) and (c).

The operation of this embodiment is the same as that of the second embodiment, except that the cam 7 and the elastic body 19 are integrated with each other in addition to the effects obtained in the second embodiment. This has the effect of reducing the number of parts.

Next, a fourth embodiment of the present invention will be described.

FIG. 20 is a plan view showing the internal structure of the door opening drive device.

The small motor 1 that can rotate forward and backward is the drive source. A pinion 2 is fixed to a shaft 101 of the small motor 1, and the pinion 2 rotates integrally with the shaft 101. The mechanical gear (intermediate reduction gear) 3 is rotatably supported by the shaft 4 and is engaged with the pinion 2. The helical gear 3 has a plate-shaped projection 301 protruding from one surface thereof in parallel with the shaft 4. A shaft 4 penetrates through the center of the projection 301.

The inner lever (torque transmission member) 5 is rotatably supported by the output shaft 6. The inner lever 5 is fixed to one end of the output shaft 6 so as not to rotate with respect to the output shaft 6, and rotates together with the output shaft 6. Also, at one end of the inner lever 5, two projections (torque transmitting portions) 501 and 502 projecting in the radial direction of the output shaft 6, and the output shaft 6 are provided. A spring holding portion 503 projecting in parallel is integrally formed. A U-shaped groove is provided at the tip of the spring holding portion 503. The inner lever 5 and the mechanical gear 3 are arranged so that the projections 501, 502 of the inner lever 5 and the projection 310 of the mechanical gear 3 face each other. ing. Note that the protruding part 501 has an unlocking side. A stopper wall 501a, a stopper wall 501b pressed by the projection 310 of the intermediate reduction gear, and a projection of the locking torque on the projection 5002. The receiving part 502 a is a stopper wall 502 b pressed by the projection part 301 of the intermediate reduction gear. Also, the stop walls 501b and 502b move in a substantially arc shape around the output shaft 6.

The spring (elastic body) 7 has a U-shaped portion 701 at a central portion, and L-shaped portions 720 and 703 at both end portions of the U-shaped portion 701. The spring 7 is fixed to the inner lever 5 by fitting the U-shaped portion 701 into the U-shaped groove of the spring holding portion 503. The spring 7 is fixed to the inner lever 5 with the L-shaped portions 720, 703 protruding from the tips of the projections 501, 502 of the inner lever 5. I have.

The cushions (restriction members) 801 and 802 are stoppers that define the range of rotation of the inner lever 5, and provide a shock when the inner lever 5 comes into contact with the inner lever 5. It is formed by an elastic member so that it can be absorbed.

One end of the output lever (output section) 9 is fixed to the other end of the output shaft 6 so as not to rotate with respect to the output shaft 6. Therefore, the output pin 19 rotates together with the inner pin 15 within the rotation range regulated by the cushions 81 and 802. The other end of the output lever 9 is connected to the door body DL, and turned in the direction of arrow A so that the inner lever 5 comes into contact with the cushions 81, 802. In the state (the state shown in FIG. 20), the door lock body DL is locked, and when the inner lever 15 is rotated in the direction of arrow B and the inner lever 15 is in contact with the cushion 802, the door lock DL is locked. The door lock DL is unlocked. The relationship between the rotation direction and the locking / unlocking may be reversed. Each component except for the output lever 9 is housed in the case 10 from the opening side of the case 10 and then the case 1 The opening side of 0 is closed by canopy 1 1. Next, the operation will be described. The gist of the present invention is a gear 3, an inner lever 5, and a spring 7, and the operations related to these are mainly shown in FIGS. 22 to 28. It will be described based on the following.

FIGS. 22 to 28 show the configuration shown in FIG. 20, wherein the gear 3, the inner lever 5, the spring 7, and the cushion 80. It is a figure which quotes and shows only 1,802.

FIG. 22 shows the same state as FIG. 20, that is, the state in which the door lock main body DL is locked by the inner lever 5 via the output lever 9. From this state, when the small motor 1 is energized and the mechanical gear 3 is rotated in the direction of arrow C (unlocking direction), as shown in FIG. 0 2 comes into contact with one of the protrusions 501 of the inner lever 5, and the rotation force can be transmitted to the inner lever 5 using the protrusion 501. When the rotary gear 3 is further rotated, the state shown in FIG. 24 is reached, and the state shown in FIG. 25 is reached in which the transmission of rotational power by contact with the protruding portion 501 is completed. Here, before reaching this state, the inner lock 15 is unlocked by the unlocking operation (including the inertia) of the door lock body DL. In order to obtain the DL force of the main body and the rotational power in the direction of the cushion 800, the inner lever 5 remains in the cushion even if the gear 3 and the inner gear 5 are separated. It rotates until it comes into contact with the pin 800 (L part).

Then, as shown in FIG. 26, the other end 300 of the projection portion 301 of the mechanical gear 3 abuts on one L-shaped portion 73 of the spring 7. Then, the spring 7 is deflected to rotate in the direction of arrow C while receiving a biasing force in the direction opposite to that of arrow C. Then, as shown in FIG. 27, when the protrusion 301 contacts the other protrusion 502 of the inner lever 5, the rotation becomes impossible. In this state, the biasing force for rotating the spiral gear 3 in the direction opposite to the arrow C by using the other end 303 of the projection 301 is accumulated in the spring 7. It has been done. Therefore, at this time, the energization of the small motor 1 is stopped. Then, due to the biasing force accumulated in the spring 7, the spiral gear 3 rotates in a direction opposite to the arrow C until it does not interfere with the inner lever 5. Then, the operation is completed in the unlocked state. Accordingly, since there is no member that interferes with the inner lever 5, when the output lever 9 is manually operated from the outside and locked, the locking can be performed with a small operation force.

In addition, according to the above configuration, the unlocking side torque which is pressed by the projection 310 of the intermediate reduction gear is applied to the inner lever 5 connected to the door lock body DL. Rotating tongue that has a stopper wall 501 a and a stopper wall 500 b formed at the tip that moves in a substantially arc shape, and that is received from the projection 310 of the intermediate reduction gear. The cushion 802 restricts the movement of the inner lever 15 against the torque, so that the spring 802 moves in the torque transmission path between the pinion 2 and the inner lever 15 to prevent the torque from flowing. When the motor 1 is energized, the protrusion 3 0 1 of the intermediate reduction gear is pressed, and the unlocking-side tongue receiving portion 5 0 1 a of the lever 5 is pressed. While moving the inner lever 5 in the direction of the cushion 802, the projecting portion 301 of the intermediate reduction gear is temporarily moved in a substantially arc-shaped moving rail of the inner lever 5. The inner lever 5 depresses the cushion 802 while the inner lever 5 presses the cushion 802 while bending the L-shaped part 73 of the spring 7. After the power supply to the motor 1 is stopped, the elasticity stored in the L-shaped part 703 of the spring 7 causes the projection part 301 of the intermediate reduction gear to move to the inner lever. Since it will be released from within the approximately arc-shaped movement trajectory of 5, the motor 1 will be unlocked by activating it, and after stopping the power supply to the motor 1, the L-shape of the spring 7 will be released. Since the intermediate reduction gear 3 only slightly rotates due to the elasticity of the part 703, the intermediate reduction gear 3 is rotated by the L-shaped part 703 of the spring 7. The gear noise that sometimes occurs can be reduced. Also, when locking, as in unlocking, after activating Motor 3 to lock and stop energizing Motor 1, the L-shaped part 70 of the spring 7 Occurs when the intermediate reduction gear 3 is rotated by the L-shaped part 70 2 of the spring 7 because the intermediate reduction gear 3 only slightly rotates due to the elasticity of 2. Reduce gear noise You can let them do it.

Also, the clutch mechanism can be achieved with only two parts, the inner lever 5 and the spring 7, and can be achieved with low cost.

Next, the fifth and sixth embodiments will be described based on FIGS. 29 and 30.

These embodiments eliminate the need for the cushions 81 and 802 of the above-described embodiments, and can achieve a lower cost accordingly. is there.

In the fifth embodiment shown in FIG. 29, the cushion is formed by abutting the ends of the L-shaped portions 720 and 703 of the spring 7 against the inner wall of the case 10. A curved portion that substitutes for the functions of 801 and 802 is provided.

In the sixth embodiment shown in FIG. 30, instead of the spring 7, a rubber cushion 12 having the same function is fixed to the inner lever 5, and FIG. As in the example shown, rubber cushions 12 are abutted against the inner wall of case 10 to substitute the functions of cushions 81 and 802. .

Incidentally, the rubber cushions 12 shown in FIG. 30 may be connected and integrally formed. Also, instead of substituting the functions of the cushions 81 and 802 for the rubber cushion 12, simply substitute the function of the spring 7. However, it is also possible to adopt a configuration in which the cushions 81 and 802 are not abolished. Industrial applicability

As described above, the door lock driving device according to the present invention operates the motor, locks or unlocks the motor, stops the power supply to the motor, and then stops the elastic body. This is effective as a door lock drive that can reduce the gear noise generated when rotating the intermediate gear.

Claims

The scope of the claims

1. A motor that rotates when energized

A rotating member that freely rotates by receiving the rotational force of the motor, a torque transmitting member that transmits the rotating torque of the rotating member,

The door is connected to a door lock that locks or unlocks the door, and receives the rotating torque from the torque transmission member and moves to the locking side or the unlocking side. And an operation having a first pressing portion pressed by the torque transmission member and a second pressing portion formed at the front end moved in a substantially arc shape. Components,

Regulating means for regulating the movement of the operating member against the rotating torque received by the torque transmitting member;

An elastic member disposed in a torque transmission path between the rotating member and the operating member,

When the motor is energized, the torque transmitting member presses the first pressing portion of the operating member, and moves the operating member in the direction of the restricting means. The torque transmission member is once separated from within the substantially arc-shaped movement locus of the operating member, and then the second torque transmission member flexes the elastic member, After the power supply to the motor is stopped by pressing the pressing member, the torque transmission member is moved by the elasticity stored in the elastic member so that the torque transmitting member moves in a substantially arc-shaped movement path of the operating member. A door lock drive device that is detached from the inside.

2. It is provided with manual operation means connected to the door opening main body or the operating member, and when the motor is energized while the manual operation means is locked in a locked state, When the elastic member receives the rotation torque of the rotating member and is elastically deformed with respect to the operating member whose movement is prohibited by the manual operation means, the impact force applied to the rotating member is reduced. At the same time, after the power supply to the motor is stopped, 2. The door lock drive device according to claim 1, wherein the torque transmission member stops in a state where the torque transmission member is separated from the operation member due to the elasticity.

3. The rotating member includes a pinion that is driven to rotate by the motor and an intermediate reduction gear that rotates while engaging with the pinion.

The torque transmitting member is provided so as to be rotatable relative to the intermediate high-speed gear around a center axis of the intermediate high-speed gear, and

The elastic member is a screw coil spring having one end locked to the intermediate reduction gear and the other end locked to the torque transmission member. A door opening / closing drive device according to claim 1 or 2.

4. The rotating member includes a pinion that is driven to rotate by the motor and an intermediate high-speed gear that rotates while meshing with the pinion, and the torque transmission member includes: The intermediate reduction gear is provided so as to be rotatable relative to the intermediate reduction gear with a center axis as a rotation center,

The elastic member is provided between the torque transmission member and the intermediate reduction gear, and is made of an elastic polymer material such as an elastomer or an elastic material such as rubber. Door lock drive as claimed in claim 1 or 2

5. The torque transmission member is characterized by being integrally formed with the elastic member by an elastic polymer material such as an elastomer or an elastic material such as rubber. A door lock drive device according to claim 4.

6. The pinion, which is driven to rotate by the motor,

An intermediate reduction gear that engages with the pinion to transmit torque, a projection that rotates integrally with the intermediate reduction gear,

One end has a torque transmitting section to which the torque is transmitted from the protrusion to move, and the other end is fixed to the torque transmitting section, and the door lock is operated. A torque transmission member fixed to the output

A regulating member for regulating movement of the torque transmission member against transmission torque from the projection; It is disposed between the projection of the intermediate reduction gear and the torque transmission section of the torque transmission member, and is bent by being sandwiched by both. An elastic body that generates an urging force in a direction that separates the torque transmitting unit from the torque transmitting unit;

Door opening and closing drive.