JPH088217Y2 - Door lock actuator - Google Patents

Description

[Detailed description of the device] [The purpose of the device]

(Field of Industrial Application) The present invention relates to a door lock actuator used for remotely operating a door lock device of an automobile. (Prior Art) Conventionally, as a door lock actuator as described above, for example, there is one shown in FIG. The door lock actuator 51 shown in the figure includes a motor 52 capable of rotating in the forward and reverse directions, a pinion 53 mounted on an output shaft 52a of the motor 52, an intermediate gear 54 meshing with the pinion 53, and the intermediate gear. A reduction gear mechanism 57 including an intermediate pinion 56 provided coaxially with a gear shaft 55 of 54 is provided, and a sector gear 58 meshing with the intermediate pinion 56.
And a final output shaft 59 that supports the sector gear 58.The motor 52, the reduction mechanism 57, the sector gear 58 and the final output shaft 59 are closed by a cover 60.
It is housed inside 61. A swing arm 62 is provided at the end of the final output shaft 59 protruding from the case 61, so that the output of the motor 52 is transmitted to a door lock portion (not shown) via a rod 63 shown by an imaginary line. Has become. The sector gear 58 is fixed by locking a pin 64 indicated by an imaginary line penetrating the final output shaft 59 in the radial direction with the sector gear 58, and the swing arm
62 is fixed by caulking the end of the final output shaft 59. (Problems to be solved by the invention) However, the conventional door lock actuator described above is used.
In the 51, when fixing the sector gear 58 to the final output shaft 59, a pin 64 that radially penetrates the final output shaft 59 is used.
Since it was fixed by locking it to the sector gear 58, it requires a large number of parts and man-hours correspondingly, and when fixing the swing arm 62 to the final output shaft 59, a caulking process is required. However, the work efficiency is not good, and the productivity is poor. (Purpose of the Invention) The present invention has been made in view of the conventional problems as described above, and it is possible to reduce the number of parts and the work man-hour, and improve the work efficiency and productivity. It is intended to provide a door lock actuator.

[Constitution of device]

(Means for Solving the Problem) The present invention is directed to a case, a motor supported by the case and capable of rotating in the forward and reverse directions, and rotatably supported by the case while transmitting the rotational force of the motor. And a swing arm that rotates together with the sector gear, the sector gear and the swing arm each have an output shaft portion and an output shaft portion fitting portion that are fitted to each other, and the sector gear. At the outer peripheral portion of the output shaft portion in, an axial rotation direction locking portion formed in the axial direction and an axial side axial direction locking portion formed in the rotation direction are provided, and a central portion of the output shaft portion is provided. The swing arm is provided with a cylindrical fitting portion formed in a concave shape and a plurality of slits formed penetrating the outer peripheral surface of the output shaft portion from the cylindrical fitting portion. In the output shaft partial fitting portion of the arm gear, the arm side rotation direction locking portion locked to the shaft side rotation direction locking portion of the sector gear and the arm locked to the shaft side axial direction locking portion of the sector gear. A lateral columnar locking portion is formed, and a positioning columnar portion to be inserted into the columnar fitting portion of the sector gear, and a plurality of slit portions of the sector gear, which are provided so as to extend from the positioning columnar portion. In order to solve the conventional problems, the door lock actuator having such a structure is formed by forming a plurality of protruding pieces that are inserted to regulate the elastic deformation of the output shaft portion of the sector gear. Is used as a means. (Operation of the Invention) In the door lock actuator according to the present invention, since the sector gear has the output shaft portion, it is not necessary to fix the sector gear to the output shaft by using a pin as in the conventional case. All the work man-hours will be reduced. Further, the arm side rotational direction locking portion and the arm side axial direction locking portion provided on the swing arm are respectively engaged with the shaft side rotational direction locking portion and the shaft side axial direction locking portion provided on the output shaft portion of the sector gear. When stopped, the swing arm is fixed in both the rotational direction and the axial direction with respect to the output shaft portion of the sector gear, so that the work efficiency is improved, and the number of parts and the number of work steps described above are increased. Combined with the reduction of, productivity will be improved. Further, when the output shaft portion of the sector gear and the output shaft portion fitting portion of the swing arm are fitted together, the cylinder fitting portion of the sector gear and the positioning cylinder portion of the swing arm are fitted together, and a plurality of sector gears The slit part of and the plurality of protruding pieces of the swing arm are fitted to each other,
Since the elastic deformation of the output shaft portion of the sector gear is restricted, the sector gear and the swing arm are unlikely to come off, and in addition, the swing arm is prevented from tilting with respect to the sector gear. (Example) Hereinafter, this invention is demonstrated based on drawing. 1 to 3 show an embodiment of a door lock actuator according to the present invention. That is, the door lock actuator 1 shown in FIG.
Inside the actuator case 3 closed by the actuator cover 2 (only shown in FIG. 2), a motor 4 capable of forward and reverse rotation, a reduction mechanism 10 for controlling the rotation of the motor 4, a sector gear portion 20A and an output shaft portion. A sector gear 20 integrally including 20B is provided, and a swing arm 30 is provided outside the actuator case 3. The motor 4 is fitted and fixed to a motor mounting portion 3a provided on the actuator case 3, and a worm 5 is mounted on the motor output shaft 4a. The deceleration mechanism 10 includes the worm 5, a worm wheel 11 that meshes with the worm 5, and a pinion 12 that works with the worm wheel 11, and the worm wheel 11 is located substantially at the center of the bottom surface of the actuator case 3. It is supported by the formed gear shaft 3b, and the pinion 12
Is a small-diameter gear shaft formed eccentrically at the tip of the gear shaft 3b.
It is supported by 3c. The pinion 12 is attached to the pinion side engaging portion 12a formed by projecting from the outer periphery of the contact surface with the worm wheel 11 and the pinion 12 of the worm wheel 11.
When the wheel-side engaging portion 11a formed on the contact surface with is engaged, the wheel-side engaging portion 11a is rotated together with the worm wheel 11. In this embodiment, the sector gear 20 is made of a hard synthetic resin integrally molded product, and the sector gear portion 20A is formed by a pinion 12.
The output shaft portion 20B is engaged with the shaft support hole 3d formed at the right end in FIG. 2 of the actuator case 3, and is rotated around the shaft support hole 3d in accordance with the operation of the pinion 12. I am trying to move. The sector gear portion 20A has an elliptical hole 20a formed substantially in the center of its plane and along the radial direction. The elliptical hole 20a is provided below the worm wheel 11 in FIG. The tip portion of the engagement protrusion 21a of the contact holder 21 is engaged. In this case, the contact holder 21
Has a flat washer shape and is fitted to an annular wall portion 3e formed concentrically with the gear shaft 3b on the bottom surface of the actuator case 3, and has two contactors (only one is shown in the drawing on the lower surface of FIG. 2). ) 22, (22) is attached. The contact holder 21 has the engaging projection on the upper surface of the peripheral portion of FIG.
21a is formed, and is rotated according to the rotation of the sector gear 20 via the engagement projection 21a. The contactors 22, (22) are arranged on the bottom surface of the actuator case 3 and along the outside of the annular wall portion 3e when the contact holder 21 rotates, that is, when the sector gear 20 rotates. By contacting / separating from the plate-shaped terminals 23a to 23f, the external power connected to the connector terminals 24, 24 mounted on the left end of FIG. 1 of the actuator case 3 is supplied to the motor 4 or the supply thereof is stopped. I try to do it. The tip end side of the output shaft portion 20B is projected from the shaft support hole 3d to the outside of the actuator case 3, and the outer circumference of the tip end side is approximately 120 in the circumferential direction as shown in FIG. Three engaging groove portions (only two are shown in FIG. 3) formed at intervals of ° (shaft side rotation direction locking portion)
20d, 20d, (20d) are provided, and an annular groove portion (axial side axial locking portion) 20e is provided outside the vicinity of the tip. Like the sector gear 20, the swing arm 30 is made of a hard synthetic resin integrally molded product, has an output shaft portion fitting portion 30b at the base end of the arm body 30a, and is connected to the door lock portion at the tip. It has a rod connecting hole 30c for connecting a rod (not shown). The output shaft portion fitting portion 30b is formed into a cap shape so as to fit on the tip side of the output shaft portion 20B of the sector gear 20, and its peripheral wall has locking groove portions 20d, 20d provided in the output shaft portion 20B. , (20d) locking protrusions (arm side rotation direction locking parts) 30d, 30d,
30d is provided, and in the vicinity of the bottom surface, an annular protrusion (arm side axial locking portion) 3 corresponding to the annular groove 20e is provided.
0e is provided. Then, attach the tip side of the output shaft portion 20B to the swing arm 30.
With the output shaft portion fitting portion 30b fitted, the oval hole 20a of the sector gear portion 20A and the tip of the swing arm 30 have a gap of approximately 180 °, the locking groove portion 20d of the output shaft portion 20B, 20d,
(20d) and the annular groove 20e are engaged with the engaging projections 30d, 30d, 30d and the annular projection 30e of the output shaft portion fitting portion 30b, respectively, so that the sector gear 20 and the swing arm 30
And are connected so as not to move in either the rotational direction or the axial direction. In this case, a cylindrical fitting portion 20b is provided at the center of the tip end side of the output shaft portion 20B of the sector gear 20, and the cylindrical fitting portion 20b is continuous between the locking groove portions 20d, 20d, (20d). Slit parts 20c, 20c, 20c are provided, and further, a positioning columnar part 30f is provided at the center of the output shaft part fitting part 30b of the swing arm 30, and the positioning columnar part 30f has an outer periphery. Is provided with projecting piece portions 30g, 30g, 30g corresponding to the slit portions 20c, 20c, 20c, and when fitting the tip side of the output shaft portion 20B to the output shaft portion fitting portion 30b of the swing arm 30. , The cylindrical fitting portion 20b and the slit portions 20c, 20c, 20c of the output shaft portion 20B are used for positioning the swing arm 30.
By fitting the 0f and the projecting piece portions 30g, 30g, 30g respectively, it is possible to easily perform the alignment in both the rotational direction and the axial direction. Also, this door lock actuator 1 is a worm
5. The sector gear 20 is rotated by the output of the motor 4 transmitted through the worm wheel 11 and the pinion 12, and the swing arm 30 is in either the state shown by the one-dot chain line or the state shown by the two-dot chain line in FIG. A return mechanism is provided for returning only the worm wheel 11 to a predetermined position when the above state occurs. This return mechanism includes a coil spring 31 provided inside the annular wall portion 3e, a fixed side spring hooking portion 3f formed on the bottom surface of the actuator case 3 and inside the annular wall portion 3e, and a first portion of the worm wheel 11. 2 includes a rotation side spring hooking portion 11b formed on the lower surface side, and one hook-shaped end portion 31a (or the other hook-shaped end portion 31b) of the coil spring 31 is fixed to the fixed side spring locking portion 3f. The worm wheel 11 is locked by the other spring-shaped terminal 31b (or one hook-shaped terminal 31a) by the rotation-side spring locking portion 11b, so that the worm wheel 11 is driven by the motor 4 to rotate clockwise. When the motor 4 is stopped, the elastic force of the coil spring 31 returns it to a predetermined position regardless of whether the motor 4 is rotated in the counterclockwise direction or in the counterclockwise direction. Therefore, the assembling of the sector gear 20 at the time of assembling the door lock actuator 1 is performed by the output shaft portion 20B.
Is fitted into the shaft support hole 3d of the actuator case 3, and the convex portion 2a provided on the lower surface of the actuator cover 2 in FIG. 2 is fitted into the concave portion 20f of the sector gear portion 20A provided on the upper surface in FIG. Further, the connection between the sector gear 20 and the swing arm 30 is such that the output shaft portion 20B of the sector gear 20 is fitted in the output shaft portion fitting portion 30b of the swing arm 30, and the locking groove portions 20d, 20d of the output shaft portion 20B are provided. , (20d) and the annular groove 20e, the locking protrusions 30d, 30 of the swing arm 30.
By engaging the d and 30d and the annular protrusion 30e, the caulking step is completed without the need for caulking. At this time, when the output shaft portion 20B of the sector gear 20 and the output shaft portion fitting portion 30b of the swing arm 30 are fitted to each other, the cylindrical fitting portion 20b of the sector gear 20 and the swing arm 30.
The positioning columnar portion 30f of the swing gear 30 and the plurality of slit portions 20c of the sector gear 20 and the swing arm 30 are fitted together.
The plurality of protrusions 30g of the
Since the elastic deformation of the output shaft portion 20B is restricted, the sector gear 20 and the swing arm 30 are unlikely to come off, and the swing arm 30 is prevented from tilting with respect to the sector gear 20. Will be improved. Next, the operation of the door lock actuator 1 will be described. First, when the door lock is in the lock-off state (the state shown by the alternate long and short dash line in FIG. 1), when external power is supplied to the motor 4 and the motor 4 is rotated in the forward direction, the rotation is transmitted through the worm 5 to the worm wheel. Transmitted to 11, the worm wheel 11 rotates counterclockwise. Next, the wheel side engaging portion 11a of the worm wheel 11
However, the pinion 12 starts rotating in the counterclockwise direction together with the worm wheel 11 from the time when the pinion 12 engages with the pinion side engaging portion 12a of the pinion 12. Along with this, the sector gear 20 in which the sector gear portion 20A is meshed with the pinion 12 rotates clockwise, and the swing arm 3 connected to the output shaft portion 20B.
0 rotates clockwise. Then, as the sector gear 20 rotates, the contact holder 21
Is rotated counterclockwise, and the contactor 22, (22) supplies or receives an external power supply to the motor 4 when the contactors 22 and (22) come into contact with or separate from predetermined plate terminals 23a to 23f of the plate terminals 23a to 23f. Is cut off and the motor 4 is stopped. At this time, the swing arm 30 is in the state shown by the chain double-dashed line in FIG. 1, and the door lock is locked on via the rod (not shown). During this time, the rotation side spring retaining portion 11b of the return mechanism
Is moved counterclockwise from the fixed-side spring hooking portion 3f, a force is generated in the coil spring 31 to return the rotating-side spring hooking portion 11b to its original position, so that only the worm wheel 11 is stopped at the same time when the motor 4 is stopped. Returns to the state shown in FIG. When the external power is supplied from this state to rotate the motor 4 in the reverse direction, the worm wheel 11 and the pinion 12 rotate in the opposite direction to the above description, and the sector gear is rotated.
20 and the swing arm 30 rotate in opposite directions, the swing arm 30 enters the state shown by the alternate long and short dash line in FIG. 1, and the door lock is in the lock-off state. As described above, in this embodiment, since both the sector gear 20 and the swing arm 30 are made of hard synthetic resin, it is possible to eliminate the trouble caused by the generation of rust. The detailed structure of the door lock actuator 1 according to the present invention is not limited to the above embodiment.

[Effect of device]

As described above, according to the present invention, because of the above-described configuration, it is possible to reduce the number of parts and work man-hours, and it is possible to improve work efficiency, and as a result, the productivity of the door lock actuator is improved. In addition to greatly improving the reliability of the sector gear, it is possible to prevent the sector gear and the swing arm from coming off easily, and it is possible to prevent the swing arm from tilting with respect to the sector gear. Also has the very good effect of being feasible.

[Brief description of drawings]

1 is a front view showing an embodiment of a door lock actuator according to the present invention with an actuator cover removed, and FIG. 2 shows a door lock actuator shown in FIG. 1 with an actuator cover attached. FIG. 3 is an exploded perspective view showing a sector gear and a swing arm of the door lock actuator shown in FIG. 1 in an enlarged manner, and FIG. 4 is a vertical cross sectional view showing a conventional door lock actuator. . 1 ... Door lock actuator, 3 ... Case, 4 ... Motor, 20 ... Sector gear, 20B ... Output shaft part, 20b ... Cylindrical fitting part, 20c ... Slit part, 20d ... Locking groove part (shaft side rotation direction locking part) , 20e ... Annular groove part (axial side axial locking part), 30 ... Swing arm, 30b ... Output shaft partial fitting part, 30d ... Locking projection part (arm side rotational direction locking part), 30e ... Annular projection part (Arm side axial locking part), 30f… Positioning cylinder part, 30g…
Projection part.

Claims (1)

[Scope of utility model registration request] 1. A case, a forward / reverse rotatable motor supported by the case, a sector gear rotatably supported by the case and transmitting the rotational force of the motor, and a sector gear In a door lock actuator having a swinging swing arm, the sector gear and the swing arm each have an output shaft portion and an output shaft portion fitting portion that are fitted to each other, and the sector gear and the swing arm are provided on an outer peripheral portion of the output shaft portion of the sector gear. Is provided with a shaft side rotation direction locking portion formed in the axial direction and a shaft side axial direction locking portion formed in the rotation direction, and a cylindrical fitting formed in a concave shape at the center of the output shaft portion. A joint portion and a plurality of slit portions formed so as to penetrate from the cylindrical fitting portion to the outer peripheral surface of the output shaft portion are provided, and the output shaft portion fitting portion of the swing arm is The arm side rotation direction locking portion locked to the shaft side rotation direction locking portion of the sector gear, and the arm side axial direction locking portion locked to the shaft side axial direction locking portion of the sector gear are formed, Further, a positioning columnar portion to be inserted into the columnar fitting portion of the sector gear, and a positioning columnar portion extending from the positioning columnar portion, respectively inserted into a plurality of slit portions of the sector gear, the output shaft portion of the sector gear. A door lock actuator, wherein a plurality of projecting pieces that restrict elastic deformation are formed.