JP2528946Y2 - Actuator device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention comprises an operating lever pivotally attached to a housing and rotatable forward and backward by a motor, and an output lever connected to the operating lever and transmitting reciprocating rotation to a door lock. Related to an actuator device.

[0002]

2. Description of the Related Art A conventional actuator device as described above is disclosed, for example, in Japanese Utility Model Laid-Open No. 3-20670. The above-described device integrally forms an operating lever (sector gear) that reciprocates by the output of a motor that can rotate forward and reverse, and an output shaft for rotatably supporting the operating lever on the housing, and an output shaft. Has an annular groove and a locking groove, and an output lever (swing arm) for transmitting the reciprocating motion of the operating lever to the door lock is provided with an annular projection and a locking projection. The output lever is connected to the output shaft such that the output lever and the operating lever rotate integrally with the annular projection and the engagement projection engaged with the grooves, respectively.

[0003]

However, in the above-mentioned conventional apparatus, the output lever is rotated with respect to the operating lever by engaging the annular projection provided on the output lever with the annular groove provided on the output shaft. Because it is supported in the axial direction, when an external load acts on the output lever in the axial direction, the load is transmitted to the operating lever via the output shaft, and the operating lever strongly contacts the housing, There is a possibility that the movement of the operation lever becomes hard and a problem occurs that smooth operation cannot be performed.

The present invention has been made in view of the above-mentioned problems of the prior art, and prevents the movement of the output lever in the axial direction from being transmitted to the operation lever, thereby enabling the operation lever to rotate smoothly. It is an object of the present invention to provide an actuator device capable of moving.

[0005]

In order to achieve the above object, an apparatus according to the present invention comprises an output shaft integrally formed on a bearing portion of a housing with an operating lever adapted to be rotated forward and reverse by an output of a motor. The output shaft portion is pivotally fitted to the output shaft portion, and a cylindrical portion integrally formed with an output lever for transmitting a reciprocating rotation operation to a door lock is fitted to a distal end portion of the output shaft portion. The present invention is characterized in that an engaging projection engaging with the formed axial engaging groove and a claw engaging axially with a step formed on the inner surface of the bearing portion of the housing are provided.

[0006]

The tubular portion of the output lever is fitted to the tip of the output shaft, the engaging projection is engaged with the engaging groove, and the claw is engaged with the step of the bearing of the housing. By doing
The output lever is connected so as to rotate integrally with the operation lever, and is prevented from falling out of the bearing portion of the housing. Even if a load is applied to the output lever in the axial direction, the bearing portion applies the load. As a result, since no load acts on the output shaft portion, the operating lever does not come into strong contact with the housing and can always rotate smoothly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. (1) a forward / reverse rotatable motor housed in a housing composed of a cover (2) and a case (3);
(4) is a worm wheel forming a reduction mechanism rotatably fitted to a cylindrical shaft portion (3a) integrally formed substantially at the center of the case (3), and has a cylindrical shape on one side surface. The pin (4a) is formed so as to protrude and meshes with the worm (1a) that rotates integrally with the rotation shaft of the motor (1), so that the pin can rotate forward and backward from the neutral position shown in FIGS. . More specifically, the worm wheel (4) has a hole formed in the center.
(4b) is rotatably fitted to the shaft (3a) of the case (3), and is detached from the shaft (3a) by the headed pin (5) fitted in the shaft (3a). It has been stopped.

The headed pin (5) is formed of an elastically deformable synthetic resin material, and at one end of the shaft (5d) is provided an enlarged-diameter flange (5a) and at the other end of the shaft (5d). A claw portion (5b) is formed on the outer periphery of the distal end portion, which is the other end, and a slit (5c) having a predetermined length is formed from the distal end of the shaft portion (5d) in the axial direction, and the shaft portion (5d) Is inserted into the cylindrical shaft portion (3a) of the case (3) so that the flange portion (5a) comes into contact with the end surface of the shaft portion (3a) and one side surface of the worm wheel (4), and the claw portion is formed.
(5c) is engaged with the step (3b) in the shaft (3a) of the case (3) and is prevented from falling out of the shaft (3a).

An operating lever (6) is made of an elastically deformable synthetic resin material. One end of the operating lever is inserted into a bearing portion (3c) formed on a cover (3) to thereby operate the operating lever. Output shaft part (6) swingably supporting (6) to the housing
Are integrally formed and the worm wheel (4)
A linking groove (8) with which the pin (4a) is engaged is recessed on a side surface overlapping one side surface. The operation lever (6) can move a stroke equivalent to the operation stroke of the locking / unlocking lever by moving the pin (4a) with the rotation of the worm wheel (4), as shown in FIG. It can be moved between the locked position and the unlocked position shown in FIG. The linkage groove (8) has an arc-shaped idle swing groove (8a) having a length corresponding to the operation stroke of the door locking / unlocking lever centering on the output shaft (7), and a center of the idle swing groove (8a). And an engagement groove (8b) extending in the radial direction from the groove. In the axial direction of the outer peripheral surface of the output shaft portion (7), as shown in FIGS.
(7a) is formed, and a hole (7b) is formed at the center so as to penetrate. The hole (7b) is rotatably fitted to a protrusion (2a) formed on the cover (2).

An output lever (9) is formed of an elastically deformable synthetic resin material.
A cylindrical portion (10) externally fitted to the distal end portion is integrally formed, and a connecting portion (9a) connected to a locking / unlocking lever (not shown) of a door lock is formed at the distal end portion. . The output lever (9) is movable together with the operating lever (6) between a locking position shown in FIG. 6 and an unlocking position shown in FIG. 7, and moves an operating stroke corresponding to the operating stroke of the locking and unlocking lever. . The unlocking lever of the door lock moves to a locking position where the unlocking operation of the door lock device is disabled and an unlocking position where the unlocking operation is enabled.

As shown in FIGS. 2 and 4, an output shaft (7) is attached to the cylindrical portion (10) so that the output lever (9) and the operating lever (6) rotate integrally. There are provided three engaging projections (10a) that engage with the engaging groove (7a). Engagement projection
(10a) has a step portion formed at one end of the bearing portion (3c) at the tip while the thickness gradually decreases toward the tip.
By engaging with (3d), a claw portion (10b) for preventing the cylindrical portion (10) from coming off from the bearing portion (3c) is formed. (11)
Around the output shaft (7) and the bearing of the case (3)
A seal member interposed between (3c) and the tubular portion (10) prevents rainwater from entering the housing.

(12) The worm wheel (4) and the case
A neutral detection switch provided between the worm wheel and (3) detects the neutral position of the worm wheel (4), stops power supply to the motor (1), and stops the worm wheel (4) at the neutral position. Things.

Next, the operation of the embodiment of the present invention will be described. By fitting the cylindrical portion (10) of the output lever (9) to the end of the output shaft portion (7) projecting outward from the bearing portion (3c) of the case (3), the engaging projection ( 10a) engages with the engagement groove (7a) of the output shaft (7), and the tip of the engagement protrusion (10a) enters the inside of the bearing (3c) while being elastically deformed.
(10b) engages with the step (3d) of the bearing (3c). In this state, the output lever (9) is engaged with the engagement groove (7a) and the engagement protrusion (10a).
With the engagement with the actuating lever (6), it rotates together with the actuating lever (6), and the claw (10b) of the engaging projection (10a) is moved to the bearing (3c).
By engaging with the stepped portion (3d), it is prevented from coming off in the axial direction from the bearing portion (3c).

As shown in FIG. 6, the worm wheel (4)
Is in the neutral position and the pin (4a) is the operating lever (6)
In the locked state located at one end of the idle swing groove portion (8a) of the link groove (8), the unlocking operation of the manual lock knob connected to the locking / unlocking lever is performed to interlock with the locking / unlocking lever of the door lock. The output lever (9) moves from the locked position shown in FIG. 6 to the unlocked position shown in FIG. 7, and at the same time, engages with the engagement groove (7a) of the output shaft (7) and the cylinder (10). By engagement with the part (10a), the operating lever (6) moves to the unlocking position integrally with the output lever (9), and accordingly, the pin
(4a) relatively moves from one end to the other end of the idle swing groove portion (8a) of the linking groove (8). When the lock knob is operated from the unlocked state in which the operating lever (6) and the output lever (9) are at the unlocked position, the output lever (9) and the operating lever (6) are operated.
Move to the locking position, and the pin (4a) relatively moves from the other end to the one end of the idle swing groove (8a). Therefore, the manual operation can be performed lightly without reversing the speed reduction mechanism.

When the operation switch inside or outside the vehicle is electrically unlocked from the locked state shown in FIG. 6, the motor (1) rotates forward and the worm wheel (4) rotates counterclockwise, and When (4a) enters the engaging groove (8b), the operating lever (6) moves to the unlocking position, and the output lever (9) moves the output shaft (7) and the cylinder (10). By the engagement of
It moves to the unlocked position integrally with the operating lever (6). At this time, the positional relationship between the output lever (9) and the door lock is displaced from each other in the axial direction of the output shaft portion (7) with respect to the normal position, and a load accompanying the displacement is applied to the output lever (9). Even when acting on the bearing, the claw portion (10b) of the cylindrical portion (10) is engaged with the step (3c) of the bearing portion (3a), and the load can be received by the bearing portion (3c). Therefore, since no load acts on the output shaft (7), the operating lever (6) can rotate smoothly without strongly contacting the housing.

Next, when the worm wheel (4) continues to rotate further, the pin (4a) reenters the idle swing groove (8a), and the worm wheel (4) reaches the neutral position. (12) detects the neutral position, stops supplying power to the motor (1), and the worm wheel (4) stops at the neutral position.

When the electric locking operation is performed from the unlocked state shown in FIG. 7, the motor (1) rotates reversely and the worm wheel
By rotating (4) clockwise, the pin (4a) enters the engaging groove (8b), and the operating lever (6) and the output lever
(9) moves to the locking position. After that, the worm wheel (4) further rotates, and the pin (4a) again moves
(8b), when the worm wheel (4) reaches the neutral position, the neutral detection switch (12) detects the neutral position and the worm wheel (4) stops at the neutral position.

[0018]

As described above, according to the present invention, the output shaft portion is provided with the engagement groove portion extending in the axial direction, and the output lever is provided with the cylindrical portion having the engagement protrusion engaging with the engagement groove portion. Along with
By providing a claw at the tip of the engagement protrusion that is axially engaged with the bearing of the housing, the axial displacement of the output lever is not transmitted to the operation lever. Can be smoothly rotated at all times without strongly contacting the housing.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a main part of an embodiment of the present invention.

FIG. 2 is a rear view of the output lever.

FIG. 3 is a front view of the operation lever.

FIG. 4 is a sectional view taken along line AA in FIG. 2;

FIG. 5 is an arrow view as viewed from a direction B in FIG. 3;

FIG. 6 is a front view showing a state where a case is removed.

FIG. 7 is a front view similar to FIG. 6, showing a state different from that of FIG. 6;

FIG. 8 is a rear view of the embodiment of the present invention.

[Explanation of symbols]

(1) Motor (2) Cover
(Housing) (3) Case (housing) (3a) Shaft (3c) Bearing (3d) Step (4) Worm wheel (reduction mechanism) (4a) Pin (4b) Hole (5) Shaft (5a) Collar (5b) Claw (5d) Shaft (6) Operating lever (7) Output shaft (7a) Engagement groove (8) Coupling groove (9) Output lever (10) Tube (10a) Engagement protrusion (10b) Claw (11) Seal member

Claims (1)

(57) [Scope of request for utility model registration] An output shaft integrally formed with an operating lever adapted to be rotated forward and reverse by an output of a motor is pivotally fitted to a bearing of a housing.
An engagement protrusion engages with a cylindrical portion formed integrally with an output lever that transmits a reciprocating rotation operation to the door lock, and engages with an axial engagement groove formed on the output shaft portion. An actuator device comprising: a portion; and a claw portion axially engaging a step formed on an inner surface of a bearing portion of the housing.