JPH0729247U - Actuator - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure, reduce operating noise, and improve operability. [Structure] When the motor 1 rotates and the small-diameter pulley 5 rotates, the rotational force of the motor 1 is transmitted to the large-diameter pulley 6a via the belt 7, and the screw shaft 6 rotates.
The slider 8 moves in the axial direction from the neutral position against the urging force of the urging means 9, whereby the rotating lever 10 rotates, and the door lock operating lever is operated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an actuator in which a door lock operating lever can be operated by a motor.

[0002]

[Prior art]

 As a conventional actuator as described above, there is, for example, the one disclosed in JP-A-56-34871. This device includes a motor, a screw shaft rotatably supported by the housing, a reduction gear that meshes with a pinion fixed to an output shaft of a motor, and a screw portion formed in the axial direction. A slider that is slidably supported in the housing and that can be screwed into the screw part of the screw shaft to move in the axial direction is provided, and the end of the slider protruding from the housing is used as the door lock operation lever. When the output shaft of the motor is connected, the screw shaft is rotated through the reduction gear by the rotation of the output shaft of the motor, and the slider is moved in the axial direction, whereby the operation lever of the door lock is operated.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional device, when the motor is electrically operated, the screw shaft is rotated through the reduction gear, which causes a large operating noise, and the end of the rider is projected from the housing to move the slider. Since it must be slidably supported on the housing, rubber boots are required as a waterproof measure for the gap between the housing and the slider.Furthermore, during manual operation from the door lock side, the screw shaft should be moved according to the movement of the slider. There were various problems such as heavy manual operation due to forced reversal.

The present invention has been made in view of the above problems of the conventional technique, and an object of the present invention is to provide an actuator having a simple structure, low operating noise, and excellent operability.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the actuator of the present invention has a motor fixed to a housing, a small-diameter pulley fixed to the output shaft of the motor, and an axial direction rotatable in the housing parallel to the output shaft of the motor. Is supported by the screw shaft, which has a large-diameter pulley formed on it, and a belt that connects the small-diameter pulley and the large-diameter pulley. The slider is movably supported by the housing, the urging means for urging the slider to the neutral position, and rotatably supported by the housing, and is connected to the door lock operation lever to operate the door lock. It is characterized by having a turning lever connected to the slider through a play corresponding to the operating stroke of the lever.

[0006]

[Action]

 When the motor rotates and the small-diameter pulley rotates, the rotational force of the motor is transmitted to the large-diameter pulley via the belt, the screw shaft rotates, and the slider resists the urging force of the urging means to become neutral. By moving from the position in the axial direction, the rotating lever is rotated and the operation lever of the door lock is operated.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. (1) is a motor that is fixed in a housing (4) consisting of a cover (2) and a case (3) and can rotate in a forward and reverse directions. A small diameter pulley (5) is fixed to the output shaft (1a). Has been. (6) is a screw shaft whose both ends are rotatably supported by the left and right support parts (4a) of the housing (4), and its axial direction is parallel to the output shaft (1a) of the motor (1). A pulley (6a) having a large diameter is formed at one end, and a screw portion (6b) is formed in the center in the axial direction. A groove (8a) is formed in the case (3) along the axial direction of the screw shaft (6).

(7) is an endless belt having elasticity and wound between a large-diameter pulley (6a) and a small-diameter pulley (5), and reduces the rotation of the output shaft (1a). To the screw shaft (6). Reference numeral (8) is a slider screwed into the screw portion (7a) of the screw shaft (7). The lower surface of the slider prevents rotation of the slider (8) and the rotation of the screw shaft (6). A protrusion (8a) that fits into the groove (4b) of the case (3) is formed so that it can slide along the axial direction, and the upper surface is rotatable with respect to the housing (4). A cylindrical engagement portion (8b) slidably fitted in the groove portion (10b) of the supported rotation lever (10) is formed. The slider (8) is guided by the groove portion (4b) along the screw portion (6b) by the forward and reverse rotation of the screw shaft (6) and moves to one or the other in the axial direction.

[0009] (9) is wound around the shaft portion (3b) of the case (3), and both ends thereof are both protrusions (3c) of the case (3) and the engaging portion (8b) of the slider (8). Is a spring that constantly urges the slider (8) to a neutral position located in the axial center of the screw shaft (6) as shown in FIG. 6) When the motor (1) stops rotating after the slider (8) has moved from the neutral position to one or the other by rotating in the normal or reverse direction, the slider (8) turns the spring (9). The screw shaft (6) is reversely rotated by the urging force of to return to the neutral position.

The rotation lever (10) has a shaft portion (10a) rotatably fitted in a shaft hole (3b) of the case (3), and an arcuate groove portion (10b) provided in a lower surface of the rotation lever (10). Has a length corresponding to the operation stroke of the operation lever of the door lock, and is connected to the slider (8) through a play corresponding to the length. On the shaft portion (10a) of the rotating lever (10) protruding outside from the shaft hole (3b) of the case (3), an output lever (11) connected to a door lock operation lever is provided with a rotating lever (10). It is connected so that it can rotate together with 10).

When the operation lever of the door lock is manually operated to rotate the output lever (11) and the rotating lever (10), the groove portion (10b) of the rotating lever (10) engages with the slider (8). The slider (8) does not move, only moving relative to the joint (8b). Therefore, it is possible to easily operate the door lock.

When the motor (1) rotates and the small-diameter pulley (5) rotates, the rotation of the motor (1) is transmitted to the large-diameter pulley (6a) via the belt (7), and the screw shaft (5) rotates. The slider (8) moves in the axial direction of the screw shaft (6) against the biasing force of the spring (9) from the neutral position due to the forward or reverse rotation of the slider (8). The engaging portion (8b) engages with the end of the groove portion (10b) of the rotating lever (10) as the lever moves, so that the rotating lever (10) and the output lever (11) move counterclockwise. By rotating, the operation lever of the door lock is moved from the locked position to the unlocked position, for example. When the door lock operation is completed and the motor (1) stops rotating, the slider (8) returns to the neutral position before the movement and stops due to the biasing force of the spring (9). To do. At that time, the engaging portion (8b) of the slider (8) only moves by relatively moving in the groove portion (10b) of the turning lever (10), and the movement of the slider (8) does not move. The rotation lever (10) and the output lever (11) are held at the moved position without being transmitted to (10).

[0013]

[Effect of device]

 As described above, according to the present invention, since the motor and the screw shaft are connected by the belt, and the slider and the rotating lever are connected through the play corresponding to the operation stroke of the door lock, the structure is simplified, It has excellent quietness and operability.

[Brief description of drawings]

FIG. 1 is a front view of an actuator of the present invention with a housing cover removed.

FIG. 2 is a sectional view taken along line AA in FIG.

[Explanation of symbols]

 (1) Motor (4) Housing (5) Small diameter pulley (6) Screw shaft (6a) Large diameter pulley (7) Belt (8) Slider (9) Spring (biasing means) (10) Rotating lever

Claims (1)

[Scope of utility model registration request] 1. A motor fixed to a housing, a small-diameter pulley fixed to an output shaft of the motor, and a large-diameter pulley rotatably supported by the housing in an axial direction parallel to the output shaft of the motor. A screw shaft formed with a pulley, a belt connecting a small-diameter pulley and a large-diameter pulley, and a screw shaft are screwed together and supported by a housing so as to be movable in the axial direction by the rotation of the screw shaft. The slider, the biasing means for biasing the slider to the neutral position, and the housing are rotatably supported by the housing and connected to the door lock operation lever to provide a play corresponding to the operation stroke of the door lock operation lever. An actuator, comprising: a rotation lever connected to the slider via the actuator.