JPH0813881A - Actuator device for car - Google Patents

Abstract

PURPOSE:To increase the rigidity of a gear shaft, and to prevent deformation by engaging a gear with differential-diameter fittings fixed onto an output shaft, forming one end of a pin penetrated into the gear shaft to a bearing section and inserting the other end into the differential-diameter fittings. CONSTITUTION:A gear shaft 28 mounted on a motor 24 is engaged slidably with differential-diameter fittings 27 fixed onto an output shaft 26. A bearing section 35 is formed by one end of a pin 60 penetrated into the gear shaft 28, and the other end is inserted into the differential-diameter fittings 27. Consequently, the rigidity of the gear shaft 28 is increased. A collar section 61 is formed on one end side of the pin 60, and the end face of the gear shaft 28 is abutted against the collar section 61, thus preventing abrasion at the time of revolution. A following lever 39 engaged with a rotational output member 12 and changed over to the place of locking and the place of unlocking when the member 12 is rotated forward and reversely, and operation is smoothed. Accordingly, the deformation of the gear shaft 28 is prevented while an actuator device having durability can be manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator device for a vehicle.

[0002]

2. Description of the Related Art Conventionally, an actuator having a motor, a gear shaft attached to an output shaft of the motor, an output member that meshes with the gear shaft to rotate, and a housing that houses each of these components is known. There is (JP-A-63-93)
379). Further, the present applicant has proposed an actuator device that simplifies the assembly work. (Japanese Patent Application No. 6-53138).

[0003]

The above-mentioned proposal can be manufactured at low cost by making the gear shaft made of synthetic resin, but when the gear shaft meshes with the output member and rotates, the thrust direction (diameter of the gear shaft) is increased. There is a risk that it will be deformed by receiving a force in the direction.

[0004]

An object of the present invention is to improve this point, to increase the rigidity of a gear shaft with a simple structure, and prevent deformation.

[0005]

Therefore, according to the present invention, the gear shaft 28 attached to the output shaft 26 of the motor 24, the output member 12 that meshes with the gear shaft 28 to rotate, and the above-described components are housed. In the actuator device having the housing 1, the gear 28 is slidably engaged with the different diameter metal fitting 27 fixed to the output shaft 26, and the pin 60 penetrating the gear shaft 28 constitutes a bearing portion at one end. The vehicle actuator device has the other end inserted into the metal fitting of different diameter. Further, the present invention provides the above device,
This is a vehicle actuator device in which a brim portion 61 is formed at one end of the pin 60. Further, the present invention is the actuator device of the vehicle locking device, wherein the output member 12 is provided with a driven lever 39 which engages with the output member 12 and switches between a locked position and an unlocked position when the output member 12 rotates forward and backward.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a synthetic resin housing of an actuator unit, and a main case 2 and a sub case 3 as shown in FIG.
Formed from. A fastening groove 5 for mounting the packing 4 (FIG. 1) is formed on the outer peripheral edge of the main case 2, and a convex portion 6 that engages with the fastening groove 5 is formed on the outer peripheral edge of the sub case 3. The main case 2 and the sub case 3 are fixed by any fastening means such as screws, screws 7 and the like (FIG. 4).

Inside the housing 1, there is formed a substantially cylindrical output member accommodating portion 8 formed by a concave portion 8a on the main case 2 side and a concave portion 8b on the sub case 3 side. At the bottom of the recess 8 a of the main case 2, a boss portion 9, an annular support wall 10 centered on the boss portion 9, and a semi-arcuate spring mounting wall between the support wall 10 and the boss portion 9. 11 and 11 are integrally molded. 1
Reference numeral 2 denotes a rotation output member composed of a disc-shaped worm wheel having a gear portion 13 formed on the outer peripheral portion thereof.
On the back side of the ring-shaped protrusion 1 that engages with the inside of the support wall 10
4 is integrally formed, and the rotation output member 12 is mounted in the recess 8a such that the annular projection 14 is fitted inside the support wall 10.

A shaft cylinder 15 is formed at the center of the rotation output member 12 so as to coincide with the boss portion 9, and at the center of the bottom of the recess 8b of the sub case 3, as shown in FIGS. The support shaft 16 is integrally formed on the. The support shaft 16 penetrates the shaft cylinder 15 of the rotation output member 12, and the tip thereof is supported by the boss portion 9. As a result, when the sub case 3 is fixed to the main case 2, the rotation output member 12 is easily stored in the output member storage portion 8 without play.

Reference numeral 17 denotes a return spring that holds the rotation output member 12 in a neutral position. Before mounting the rotation output member 12 in the recess 8a, both legs 18 thereof are engaged with both ends of the spring mounting wall 11. It is fixed to the concave portion 8a so as to be stopped. Between both legs 18 of the return spring 17,
When the semi-circular engagement piece 19 (see FIGS. 2 and 5) integrally formed on the back side of the rotation output member 12 faces the rotation output member 12 from the neutral position (the position in FIG. 1) to the left and right sides. , The engagement piece 19 engages with one of the leg portions 18 to extend the return spring 17 against the elastic force, and the rotation output member 12
When the rotation of is completed, the return spring 17 contracts to return the rotation output member 12 to the neutral position.

A protrusion 20 is formed on one side of the recess 8a of the main case 2, and a rubber stopper 21 is provided on the outer periphery of the protrusion 20.
Is fitted. A protrusion 22 is formed on one side of the back surface of the rotation output member 12 so as to come into contact with the side surface of the rubber stopper 21 when the rotation output member 12 rotates right and left by a predetermined amount.

Reference numeral 23 is a motor housing portion formed by the recessed portion 23a of the main case 2 and the recessed portion 23b of the sub case 3, and the motor housing portion 23 houses the forward / reverse rotation motor 24. A plurality of ribs 25 for pressing the motor 24 from the front and back directions when the sub case 3 is fixed to the main case 2 are formed on the inner surfaces of the recesses 23a and 23b. Motor 24
A different-diameter metal fitting 27 having the same diameter is fixed to the output shaft 26 from beginning to end, and a different-diameter concave portion 30 having the same diameter is formed on one end 29 of a gear shaft 28 composed of a cylindrical worm gear. Spline movably. Further, the gear shaft 28 is provided with a hole 34 penetrating the shaft core portion. Pin 60
Shaft portions 62 and 63 are formed on both sides of the brim portion 61, and the shaft portion 62 includes the hole 34 of the gear shaft 28,
Also, it is fitted into a hole 64 provided in the different-diameter metal fitting 27 of the motor 24.

The gear shaft 28 is a recess 3 of the main case 2.
1a and the recess 31b of the sub case 3 are housed in the shaft housing 31 formed. A passage 32 that communicates with the motor storage portion 23 is formed in the shaft storage portion 31, and a bearing 35 that locks the shaft portion 63 of the pin 60 is formed on the tip side of the shaft storage portion 31. Further, a flange portion 61 is provided on one end side of the pin 60.
To form. Reference numeral 32a is a recess formed in the main case 2 to form the passage 32, 32b is a recess formed in the sub case 3 to form the passage 32, and 35a is formed in the main case 2 to form the bearing portion 35. The recess 35b is a recess formed in the sub case 3 to form the bearing 35.

When the gear shaft 28 is mounted in the shaft accommodating portion 31, the gear shaft 28 meshes with the gear portion 13 of the rotation output member 12, and when the motor 24 rotates forward and backward, the rotation output member 12 rotates forward and backward. A cam groove 38 having a lock cam edge 36 and an unlock cam edge 37 is formed on the front side of the rotation output member 12, as shown in FIG.
The pin 40 formed at the tip of 9 is exposed. Driven lever 3
Shafts 41, 41 projecting to the front and back respectively are integrally formed at the base end of 9, and the shaft 41 on the back side is projected outward through a through hole 42 formed in the main case 2, and the projection In the department,
The lock device is connected to a known lock lever (not shown) that can switch between a locked state and an unlocked state. The front shaft portion 41 is supported by the boss portion 59 of the sub case 3. When the rotation output member 12 rotates in the forward / reverse direction, the driven lever 39 selectively makes contact with the lock cam edge 36 or the unlock cam edge 37 of the rotation output member 12 with the bin 40. Switch the lock lever between the locked position and the unlocked position.

The gear shaft 28 utilizes the engagement between the different-diameter metal fitting 27 and the different-diameter recess 30 so that the gear shaft 28 can be slid in the shaft accommodating portion 31 in the axial direction to a slight extent. From the length between the walls on both sides of the shaft storage portion 31,
It is formed to be shorter than the length obtained by subtracting the thickness of the brim portion 61, and the passage 32 has a margin. This facilitates the work of accommodating the gear shaft 28 in the shaft accommodating portion 31 while meshing with the gear portion 13 of the rotation output member 12, and allows the return spring 17 to smoothly return the rotation output member 12 to the neutral position. Can be done. (Because the gears do not mesh with each other firmly, there is no mechanical lock).

A state detection switch 43, which is pressed and turned on and off when the driven lever 39 rotates, is provided at a position lateral to the driven lever 39. State detection switch 43
The main body of 4 has a hole 4 for fixing in a direction parallel to the bearing portion 41.
4, 44 are provided, and the holes 44 are respectively inserted into the relatively long rod-shaped fastening portions 45, 45 formed in the main case 2. Four
7 is a wiring terminal of the state detection switch 43, and 46 is a plurality of terminal pieces connected to the wiring terminals 47. A fastening hole 49 is formed at the base end portion 48 of each terminal piece 46, and the fastening hole 49 is formed. It is inserted into a relatively short rod-shaped fastening portion 50 (FIG. 3) formed in the main case 2 and fastened. Each terminal piece 46
The front end portion 51 of the is exposed in the socket portion 52 formed at the left end of the housing 1. Base end portion 48 of the terminal piece 46
The female contact 53 with which the wiring terminal 47 is engaged is formed on the. When attaching the terminal piece 46 and the state detection switch 43, the terminal piece 46 is first inserted into the fastening portion 50 and attached to the main case 2, and then the state detection switch 43.
When the wiring terminal 47 is inserted into the fastening portion 45, the wiring terminal 47 is automatically inserted into the female contact 53 and mounted.

Reference numeral 54 denotes a pair of left and right wiring terminals 5 of the motor 24.
5 is a terminal piece to be inserted and connected to the terminal 5, and the terminal piece 54 faces the inside of the socket portion 52 like the terminal piece 46. 57 is the socket 5
2, which is a terminal support portion formed on the inner side of the second case, and has a concave portion 57a formed in the main case 2 and a convex portion 5 formed in the sub case 3.
And 7b. In the recess 57a of the main case 2,
When the tip ends 51, 56 of the terminal pieces 46, 54 are locked to each other and covered with the sub case 3, the convex portion 57b formed on the sub case side is fitted and fixed thereon. Reference numeral 58 is a recess formed on the side of the sub case 3 that houses the driven lever 39 and the switch 43.

[0017]

The operation of the present invention is as described above.
When assembling this, each part in the main cases 2 and 3 is assembled only by fitting, without using any screws, except when the sub case 3 is attached to the main case 2 with the screws 7. First, in FIG. 2, a square annular rubber stopper 21 is fitted into the square protrusion 20 to form both leg portions 18 and 1 of the return spring 17.
8 is engaged with both sides of the wall 11 for spring mounting, and the annular projection 14 of the rotation output member 12 is engaged with the inside of the support wall 10.
9 is inserted between both legs 18, 18 of the return spring 17.

Next, the different-diameter metal fitting 27 is fixed to the output shaft 26 of the motor 24, and the different-diameter concave portion 30 formed on the gear shaft 28 is inserted into and engaged with the different-diameter metal fitting 27, and the pin 60 is engaged with the gear shaft. The holes 24 of 28 and the holes 64 of the odd-shaped metal fitting 27 are fitted, and after the terminal pieces 54 are inserted and attached to the wiring terminals 55 of the motor 24, when these are attached together to the main case 2, the motor 24 becomes The gear shaft 28 is recessed into the recess 23a.
1a, and the tip end 56 side of the terminal piece 54 is fitted and supported by the recess 57a of the main case 2. At this time, the gear shaft 28 is slidable with respect to the output shaft 26, and the length obtained by subtracting the thickness of the brim portion 61 from the wall-to-wall length of the recess 31a is slightly longer than the gear shaft 28. Therefore, the gear shaft 28 and the gear portion 13 easily mesh with each other.

Next, the tip portion 51 of the terminal piece 46.
While inserting into the recess 57a of the main case 2, the fixing hole 49 of the base end portion 48 of the terminal piece 46 is inserted into the fixing portion 50 standing upright from the main case 2, and then the state detecting switch 43 is attached to the fixing portion 45. Align the through holes 44 of and insert. Then, the wiring terminal 47 of the state detection switch 43 is connected to the terminal piece 4
The female contact 53 of No. 6 is interrupted and engaged from above,
The state detection switch 43 can be attached and the wiring terminal 47 and the female contact 53 can be connected at the same time.

Next, the shaft portion 41 of the driven lever 39 is inserted into the through hole 42 of the main case 2, and the pin 40 at the tip of the driven lever 39 is engaged with the cam groove 38 on the front surface of the rotation output member 12. Assembling the internal parts does not require special tools, but also ordinary tools such as screws, adhesives, screwdrivers, and pliers. It will not come off due to vibration and shock, and the work can be simplified and the work amount can be reduced.

In this way, when the internal parts are attached to the main case 2 side, the sub case 3 is inserted so that the support shaft 16 of the sub case 3 is inserted into the shaft cylinder 15 of the rotation output member 12 and the boss portion 9. When the main case 2 is covered and both cases 2 and 3 are fixed to each other with screws 7, the assembly of the actuator unit is completed.

In the assembled unit, when the motor 24 is rotated normally and reversely, the gear shaft 28 rotates and the rotation output member 12 normally and reversely rotates, whereby the lock cam edge 3 is rotated.
6 or the unlock cam edge 37 selectively abuts on the pin 40 to rotate the driven lever 39 forward and backward around the shaft portion 41 to unlock the lock lever connected via the shaft portion 41 from the locked position. Switch to position. At this time, the motor 2
The power of 4 corresponds to the gear shaft 28 and the gear portion 1 of the rotation output member 12.
However, the pin 40 of the driven lever 39 is engaged with the lock cam edge 36 or the unlock cam edge 37 of the rotation output member 12 and is pressed, so that the cam action is achieved. As a result, the force on the motor 24 side is sufficiently amplified, so that the driven lever 39 switches smoothly.

In the above, the support shaft 16 serving as the rotation shaft of the rotation output member 12 is formed on the side of the sub case 3, and the boss portion 9 into which the tip of the support shaft 16 is inserted is formed on the side of the main case 2. However, it is also possible to form the support shaft 16 on the side of the main case 2 and the boss portion 9 on the side of the sub-case 3, and the support shaft 16 on the side of the rotation output member 12 as described above. Formed as one body or separate body, both cases 2, 3
The boss portions of the support shaft 16 formed on the rotation output member 12 may be formed respectively.

[0024]

The known device can be manufactured at a low cost by making the gear shaft made of synthetic resin. On the other hand, when the gear shaft rotates in mesh with the rotation output member, the thrust direction (gear There was a risk of being deformed by receiving a force in the radial direction of the shaft. . However, according to the present invention, the motor 24,
In the actuator device having the output member 12 that rotates by meshing with the gear shaft 28 attached to the output shaft 26 of the motor 24, and the housing 1 that houses the above-mentioned components, the gear shaft 28 is attached to the output shaft 26. The pin 60, which is slidably engaged with the fixed different-diameter metal fitting 27 and penetrates the gear shaft 28, constitutes a bearing portion at one end and is inserted into the different-diameter metal fitting 27 at the other end. With this structure, the rigidity of the gear shaft can be increased and deformation can be prevented.
Further, according to the present invention, in the device, the brim portion 61 is formed on one end side of the pin 60, so that the gear shaft 2
In No. 8, the end surface of the No. 8 abuts against the brim portion 61, and wear during rotation can be prevented at the same time. Further, the present invention is an actuator device for a vehicle lock device, in which the output member 12 is provided with a driven lever 39 that engages with the output member 12 to switch between a locked position and an unlocked position when the output member 12 rotates in the normal or reverse direction. The actuator device has a simple structure, operates smoothly, and is durable.

[Brief description of drawings]

FIG. 1 is a plan view when each part is attached to a main case.

FIG. 2 is a plan view showing a mounting position of each component.

FIG. 3 is a perspective view of a main case and a sub case.

FIG. 4 is a sectional view.

FIG. 5 is a sectional view. 1 ... Housing, 2 ... Main case, 3 ... Sub case, 4 ... Packing, 5 ... Fastening groove, 6 ... Convex part, 7 ... Screw, 8 ... Output member accommodating part, 8a, 8b ... Recessed part, 9 ... Boss part 10 ... Support wall, 11 ... Spring mounting wall, 12 ... Rotation output member, 13 ...
Gear portion, 14 ... Annular protrusion, 15 ... Shaft cylinder, 16 ... Support shaft,
17 ... Return spring, 18 ... Leg part, 19 ... Engagement piece, 20 ... Protrusion, 21 ... Rubber stopper, 22 ... Protrusion, 23 ... Motor storage part, 23a, 23b ... Recessed part, 24 ... Motor, 25 ...
Ribs, 26 ... Output shaft, 27 ... Different diameter metal fittings, 28 ... Gear shaft,
29 ... One end, 30 ... Different diameter recessed part, 31 ... Shaft housing part, 31
a, 31b ... concave part, 32 ... passage, 32a, 32b ... concave part, 33 ... tip, 34 ... small diameter shaft, 35 ... bearing part, 35
a, 35b ... Recessed portion, 36 ... Lock cam edge, 37 ... Unlock cam edge, 43 ... Status detection switch, 44 ... Through hole,
45 ... Fastening part, 46 ... Terminal piece, 47 ... Wiring terminal,
48 ... Base end part, 49 ... Fixing hole, 50 ... Fixing part, 51 ... Tip part, 52 ... Socket part, 53 ... Female contact, 54
… Terminal strips, 55… wiring terminals, 56… tips, 57…
Terminal support parts, 57a, 57b ... Concavities and convexities, 58 ... Recesses, 59 ... Boss parts, 60 ... Pins, 61 ... Collar parts, 62,
63 ... Shaft part, 64 ... Hole.

Claims (3)

[Claims] 1. A motor 24 and an output shaft 2 of the motor 24.
6, an actuator device having a gear shaft 28 attached to the drive shaft 6, an output member 12 that rotates by meshing with the gear shaft 28, and a housing 1 that houses the above-described components.
The gear shaft 28 is slidably engaged with a different diameter metal fitting 27 fixed to the output shaft 26, and a pin 60 penetrating the gear shaft 28 constitutes a bearing portion at one end and the different diameter at the other end. An actuator device for a vehicle that is inserted into the metal fitting 27. 2. The actuator device for a vehicle according to claim 1, wherein a brim portion 61 is formed on one end side of the pin 60. 3. The driven lever 39 according to claim 1, wherein when the output member 12 rotates forward and backward, the output member 12 engages with the output member 12 to switch between a locked position and an unlocked position.
The actuator device of the vehicle lock device provided with.