JPH0341163B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an operating device for a driven member in, for example, a device for adjusting the longitudinal or vertical position of a seat or the angle of a backrest of an automobile or the like.

(Prior Art) Generally, the front and rear or up and down positions of seats in automobiles, etc., the angle of backrests, the angle or height of headrests, lumbar supports, thigh supports, side supports, wind regulators, sunroof deflectors, retractable headlamps, etc. The adjustment device is operated by a handle and kept in a position (height and angle) suitable for use.

By the way, if the automobile runs in this state, there is a concern that the above-mentioned position may shift due to running vibrations.

Therefore, a structure is required that does not move even when force is applied to the operated member, but moves freely only when force is applied to the operating handle.

Conventionally, as a structure that satisfies these requirements, as in the brake structure of a wind regulator, the driven member (operated member) is fixed on the base by the outer circumferential friction force of a coil spring, and when operated from the handle, the above-mentioned A device is known in which a driven member is operated while loosening a coil spring.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional device, since the outer circumferential friction force of the coil spring is used, handle play is likely to occur.Moreover, the handle operation force is heavy, and since there is a friction part, The disadvantage is that it is prone to wear and tear.

In view of this, the present invention provides a driven member operating device that can rotate a driven member (operated member) in stages by rotating an operating member such as a handle, as a structure that satisfies the above requirements. Therefore, it is an attempt to solve the above-mentioned conventional drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the solving means of the present invention includes a substrate as a base, a driven member rotatably attached to the substrate, and a driven member attached to the substrate. an operating member pivotally connected to the drive member concentrically and rotatably with respect to each other; a plurality of concave and convex portions provided on the base plate in an arc shape at a constant radius from the pivot center; A locking member that is movably provided and has an engaging portion at its tip that can be engaged with and detached from the uneven portion, and the locking member is rotationally biased in a direction in which the engaging portion engages with the uneven portion. A spring is provided. Furthermore, an abutment pin provided on one of the operating member and the locking member;
A connecting mechanism is provided, which includes a guide groove provided on the other side and into which the corresponding contact pin slidably engages, and connects the operating member to the locking member with a predetermined play in the rotation direction thereof. The guide groove has an apex portion at one end with which the abutment pin comes into contact when the engaging portion of the locking member engages with the uneven portion, and the pivot center is connected from the apex portion to the apex portion. The abutting pin is tilted on both sides with respect to a central radial direction, and the abutment pin is tilted on both sides with respect to a central radial direction, and the rotation of the operating member causes the locking member to rotate in a direction to release the engagement between the engaging portion and the uneven portion. After sliding, when the driven member rotates about the pivot center by one pitch of the uneven portion via the locking member, the engaging portion engages with the next uneven portion. The abutting pin is formed on a cam surface that allows the abutment pin to return to the apex portion by the biasing force of the spring.

(Function) Accordingly, in the present invention, when the operating member is rotated, the locking member is released against the biasing force of the spring due to the abutting engagement between the cam surface of the guide groove and the abutment pin. By rotating in the direction, the engagement between the engaging portion of the locking member and the uneven portion is released. After that, as the operating member rotates,
As the locking member rotates, the driven member rotates by a minute angle corresponding to one pitch of the uneven portion, and at the same time, the locking member is rotated again in the engagement direction by the biasing force of the spring. The engaging portion is locked into the next uneven portion. Therefore, the driven member is rotated stepwise and by a minute angle while being locked at each step.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

1 to 3 show a first embodiment in which the present invention is applied to a seat reclining device A. FIG. In FIG. 1, reference numeral 1 denotes a seat installed in an automobile or the like, and the seat 1 consists of a seat bottom 2 and a seat back 3. A reclining device A is attached to the side of the seat 1 for roughly and finely adjusting the inclination angle of the seat back 3 with respect to the seat bottom 2.

The above reclining device A is shown in FIGS. 2 and 3.
As shown in the figure, two upper and lower fixed brackets 4,
5 (corresponding to the substrate of the present invention), a tilting bracket 6 (corresponding to the driven member of the present invention), a coarse adjustment lever 7, a fine adjustment lever 8 (corresponding to the operating member of the present invention), and a lock plate 9. The pivot member 10 that supports the tilting bracket 6, the coarse adjustment lever 7, and the fine adjustment lever 8, and the support shaft member 11 that supports the lock plate 9 are fixed on both sides by the upper and lower fixed brackets 4 and 5. Each bearing hole 4a provided in the upper and lower fixing brackets 4 and 5
It is rotatably supported by 5a, 4b, and 5b to form a unit. The fixing brackets 4, 5 are mounting holes 4c, 5 provided in the upper and lower fixing brackets 4, 5.
It is attached to the seat bottom plate (not shown) of the seat bottom 2 by bolts 12, 12 that pass through holes c, 4c, and 5c. Above tilting bracket 6
is attached to the seat back plate (not shown) of the seat back 3 by bolts 13, 13 passing through attachment holes 6b, 6b provided in the arm portion 6a of the tilting bracket 6.

The tilting bracket 6 includes the pivot member 10.
A fan-shaped gear portion 6d centered on the insertion hole 6c through which the gear is inserted, and a substantially flat side portion 6e continuous with the gear portion 6d are formed. On the other hand, the lock plate 9 is formed with a gear portion 9a that engages with the gear portion 6d in a detachable manner, and is also provided with a sliding groove 9b that extends perpendicularly to the meshing surfaces of the gear portions 6d and 9a. It is set up.

The pivot member 10 includes a pivot hole 14a and an enlarged diameter portion 14 whose axis is eccentric with respect to the pivot hole 14a.
b, a large diameter portion 15a inserted into the pivot hole 14a of the eccentric shaft 14, and the large diameter portion 1.
5a and a pivot 15 having a small diameter portion 15b protruding from the tip thereof. Then, the small diameter portion 1 of the pivot 15
5b into the bearing hole 5a of the lower fixed bracket 5, and the ring-shaped groove 1 provided in the small diameter portion 15b.
While attaching the retaining ring 16 to 5c,
The rear end of the large diameter portion 15a of the pivot shaft 15 is inserted into the bearing hole 4a of the upper fixed bracket 4 and the through hole 8a provided in the fine adjustment lever 8, and the washer 17, the later-described spiral spring 29, and the catch plate 31 are inserted. By attaching a retaining ring 18 to a ring-shaped groove 15d provided in the large diameter portion 15a, the retaining ring 18 is prevented from coming off and is rotatably supported. Furthermore, an insertion hole 6c of the tilting bracket 6 and an insertion hole 7a provided in the coarse adjustment lever 7 are rotatably supported in the enlarged diameter portion 14b of the eccentric shaft 14, and a cam lever 19 is integrally attached to the eccentric shaft 14. is fixed to.

Further, the support shaft member 11 has small diameter portions 11a, 11a at both ends to be supported by the respective bearing holes 4b, 5b of the upper and lower fixed brackets 4, 5, and has a slide groove 9b for the lock plate 9 in the center. It has a sliding portion 11b that is slidably fitted into the. The lock plate 9 is supported rotatably and slidably toward the tilting bracket 6 with respect to the support shaft member 11, and when the lock plate is rotated in the engagement direction, the gear portion 9a engages the gear of the tilting bracket 6. Both gear parts 6
d and 9a are provided to ensure sufficient engagement.

Furthermore, an operating knob 20 is inserted and fixed at the tip of the alignment lever 7, while an engagement pin 2 is provided upright at the center of the lock plate 9.
An arcuate engagement groove 7b with which the lock plate 9 engages is formed, and a hole 7c provided in the intermediate portion faces a locking portion 9c formed on the opposite edge of the gear portion 9a of the lock plate 9. The rotating ring 22 is fixed by a locking pin 23. When the coarse adjustment lever 7 is released (operated in the direction of arrow B in the figure), the engagement pin 21 is pushed down by the engagement groove 7b, and the lock plate 9 is moved so that the gear part 9a is aligned with the gear part 6d of the tilting bracket 6. At the same time, when the coarse adjustment lever 7 is operated to lock (in the direction of the arrow C in the figure), the locking portion 9c of the lock plate 9 is rotated by the rotary wheel 22. The lock plate 9 is pushed up so as to ride on it, and the lock plate 9 is rotated in the direction of engagement (in the direction of arrow N in the figure) in which the gear portion 9a meshes with the gear portion 6d of the tilting bracket 6. A tension spring 24 is provided between the engagement portion 7d of the coarse adjustment lever 7 and the engagement portion 4d of the upper fixed bracket 4 so as to constantly bias the coarse adjustment lever 7 in the engagement direction.

The upper fixed bracket 4 has a bearing hole 4.
A fan-shaped gear portion 4e (corresponding to the uneven portion of the present invention) centered at point a is formed. Further, an operating knob 25 is fixed to the tip of the fine adjustment lever 8, while a cam surface in the center thereof has an isosceles triangular or pentagonal shape symmetrical with respect to a radial line centered on the through hole 8a. The guide groove with 8b
is drilled. On the other hand, a dogleg-shaped engagement piece 26 (corresponding to the locking member of the present invention) is rotatably supported at the center of the cam lever 19 by a pivot pin 26c. An engaging portion 26a is formed at one end of the engaging piece 26, and the engaging portion 26a can be engaged with and detached from the gear portion 4e of the upper fixed bracket 4, and the other end is movable within the guide groove 8b of the fine adjustment lever 8. A contact pin 27 is provided upright. Further, a tension spring 28 is provided between the engaging portion 26b of the engaging piece 26 and the engaging portion 8c of the fine adjustment lever 8, and engages the engaging portion 26a of the engaging piece 26 with the gear portion 4e of the fixed bracket 4. and the contact pin 27 of the engagement piece 26 is biased and held at the apex of the guide groove 8b of the fine adjustment lever 8 (that is, the part furthest from the through hole 8a). has been done. Then, rotate the fine adjustment lever 8 (
-Y arrow direction), the abutment pin 27 moves from the apex of the cam surface of the guide groove 8b to the inclined side, rotates the engagement piece 26 against the biasing force of the tension spring 28, and rotates the engagement piece 26 against the biasing force of the tension spring 28. After the engagement between the engagement portion 26a of the coupling piece 26 and the gear portion 4e of the upper fixed bracket 4 is released, a predetermined play in the rotation direction (the abutment pin 27 moves from the apex of the guide groove 8b to the inclined side) is released. After the engagement piece 26 and the cam lever 19 that pivotally supports the engagement piece 26 are rotated, the engagement piece 26 is rotated again by the biasing force of the tension spring 28. Joint part 26a and gear part 4
When the cam lever 19 and the cam lever 19 are brought into locking engagement, the eccentric shaft 14 (pivot member 10) integrated with the cam lever 19 is also rotated, and the enlarged diameter portion 14b of the eccentric shaft 14 is eccentrically rotated to rotate the tilting bracket 6. A coupling mechanism is constructed that allows for slight tilting, thereby making it possible to finely adjust the inclination angle of the tilting bracket 6 step by step.

Reference numeral 19 denotes a spiral spring, the inner end of which is engaged with a groove-like engagement portion 15e provided on the pivot shaft 15, while the outer end is engaged with the tilting bracket 6 via a engagement piece 30. The tilting bracket 6 is always urged in the forward tilting direction. Further, 31 is a catch plate that covers the spiral spring 29, and 32 is a cover that is attached to the catch plate 31 after the reclining device A is attached to the seat 1.

Next, the reclining device A of the first embodiment
To explain the operation, first, when the seated person roughly adjusts the inclination angle of the seat back 3, he or she holds the operation knob 20 of the coarse adjustment lever 7 and moves it in the release direction B.
When the lock plate 9 is pulled up, the coarse adjustment lever 7 rotates in the release direction B against the biasing force of the tension spring 24, and its engagement groove 7b pushes down the engagement pin 21 of the lock plate 9. 9 rotates in the detachment direction M, its gear portion 9a separates from the gear portion 6d of the tilting bracket 6, the meshing of both gear portions 6d and 9a is released, and the tilting bracket 6 becomes in a state where it can freely tilt. .

In this state, the tilting bracket 6 tends to tilt forward due to the urging force of the spiral spring 29, but the seatback 3 is supported by the back of the seated person, and the seatback 3, that is, the seatback tilts, with the back of the seated person. After adjusting the tilt angle of the bracket 6 to the desired angle position, turn the operation knob 20 of the coarse adjustment lever 7.
When you release the coarse adjustment lever 7, the tension spring 24
The rotating wheel 22 is rotated in the locking direction C by the urging force of
When the lock plate 9 is pushed up so as to run over the locking portion 9c of the lock plate 9, the lock plate 9 rotates in the engagement direction N, and its gear 9a meshes with the gear portion 6d of the tilting bracket. In this way, the seated person can coarsely adjust the seat back 3 to a desired inclination angle.

Next, when the seated person wants to finely adjust the inclination angle of the seat back 3, use the fine adjustment lever 8 operation knob 2.
When the fine adjustment lever 8 rotates in the upward direction X, the contact pin 27 of the engagement piece 26 moves into the guide groove 8b of the fine adjustment lever 8. By moving the inclined side from the apex of the cam surface, the engaging piece 26 rotates clockwise against the biasing force of the tension spring 28.
The engaging portion 26a is disengaged from the gear portion 4e of the upper fixed bracket 4, and the engagement between the two is released. After that (that is, after having a predetermined play in the rotational direction), as the fine adjustment lever 8 rotates, both the engagement piece 26 and the cam lever 19 move in the upward direction X.
by rotating the tension spring 28 again.
The engaging piece 26 is rotated counterclockwise by the biasing force, and the engaging portion 26a of the engaging piece 26 is locked into gear portion 4e above the gear portion 4e.
At the same time, the eccentric shaft 14 integrated with the cam lever 19
(Pivotal member 10) also rotates counterclockwise, and the enlarged diameter portion 14b of the eccentric shaft 14 eccentrically rotates counterclockwise, and the center position of the enlarged diameter portion 14b changes slightly from the center position before eccentricity. Angle displacement. This angular displacement causes
A tilting bracket 6 supported by the expanded diameter portion 14b
Correspondingly, the coarse adjustment lever 7 also tilts rearward by a minute angle, allowing the seat back 3 to be finely adjusted step by step to a desired inclination angle.

In this case, the engagement between the gear portion 6d of the tilting bracket 6 and the gear portion 9a of the lock plate 9 is caused by the rotation shaft 22 that pushes up the gear portion 9a in the engagement direction N.
Since the relative distance between the coarse adjustment lever 7 and the insertion hole 7a remains constant, the engaged state is maintained, and the accompanying displacement of the lock plate 9 is prevented by the sliding groove 9b of the support shaft member. 11 sliding part 11b
This is absorbed by sliding the shaft member 11 and rotating the support shaft member 11, thereby ensuring that both gear portions 6d and 9a are always fully engaged.

Also, if the seated person turns the operation knob 2 of the fine adjustment lever 8
5 and pull it down in the downward direction Y, the seat back 3 can be finely adjusted forward to a desired inclination angle step by step in the same manner as described above.

Further, FIGS. 4 to 7 show a second embodiment in which the present invention is applied to a wind regulator D. 4
Reference numeral 0 denotes a base (corresponding to the substrate of the present invention) fixed to a door panel (not shown), and the base 40 has a bearing part 40a formed by recessing a part of the base 40 into a circular shape. A handle 41 is rotatably supported on the bearing portion 40a via a handle shaft 42, and a pinion 43 (which corresponds to the driven member of the present invention) is rotatably fitted and supported on the handle shaft 42. There is. Therefore, the handle 41 and pinion 43 are coaxially pivoted to the bearing portion 40a of the base 40 so as to be rotatable with respect to each other. and,
A cam lever 44 is integrally fixed to the pinion shaft 43a of the pinion 43. Further, a cam lever 45 is integrally fixed to the handle shaft 42, and the cam lever 45 has an isosceles triangular guide groove having a mountain-shaped cam surface 46a that is symmetrical with respect to a radial line centered on the handle shaft 42. 46 is drilled.

Furthermore, ring-shaped external gears are fixed around the bearing part 40a of the base 40 around the pivot center (handle shaft 42), so that the gears are arranged in a circular shape at a constant radius from the pivot center. A plurality of uneven portions 47, 47... are provided. Further, the cam lever 44 of the pinion shaft 43a has an arc-shaped locking member 48 at the center thereof, and a pivot pin 49.
It is rotatably supported via. One end of the locking member 48 is formed with an engaging portion 48a that can be engaged with and disengaged from the uneven portion 47, while the other end is formed with a cam of a guide groove 46 provided in the cam lever 45 of the handle shaft 42. A contact pin 50 that engages and contacts the surface 46a is provided upright. Furthermore, the locking member 4
A spring 51 is tensioned between the locking member 8 and the cam lever 45 so as to bias the engaging portion 48a of the locking member 48 in the direction of engaging the concavo-convex portion 47. Then, by rotating the handle 41, the abutment pin 50 slides on the cam surface 46a of the guide groove 46,
After the locking member 48 is rotated in the direction of releasing the engagement between the engaging portion 48a and the uneven portion 47 against the biasing force of the spring 51, and the engagement between the two is released, that is, the handle 41 After having a predetermined play in the rotation direction in the rotation operation, the locking member 4
8 and a cam lever 44 that pivotally supports the locking member 48.
, and the pinion 43 is also rotated accordingly, and the engaging portion 48a of the locking member 48 is again locked into engagement with the next uneven portion 47 by the biasing force of the spring 51. The pinion 43 is configured to be rotated stepwise by a predetermined angle.

Incidentally, 52 is a sector that meshes with the pinion 43, and this sector 52 is rotatably supported on the base 40 via a pivot shaft 53, and is supported by the spiral spring 5.
4 in the clockwise direction in FIG. An arm 55 is connected to the fan-shaped center of the sector 52, and a window glass (not shown) is connected to the tip of the arm 55, so that the sector 52 rotates as the pinion 43 rotates. It is configured to raise and lower the window glass. Also, 5
6 is a door trim.

Next, to explain the operation of the wind regulator D of the second embodiment, when the handle 41 is rotated clockwise, the cam lever 45 integrated with the handle shaft 42 is rotated clockwise. , the cam surface 4 of the guide groove 46 of the cam lever 45
6a and the abutment pin 50 of the locking member 48, the locking member 48 rotates in the release direction against the biasing force of the spring 51, so that the locking member 48
The engagement between the engaging portion 48a and the uneven portion 47 is released. After that, as the handle 41 is rotated, the locking member 48 and the cam lever 44 are rotated.
As both rotate clockwise, the pinion 43 integrated with the cam lever 44 rotates clockwise by a predetermined minute angle, and at the same time, the locking member 48 is engaged again by the biasing force of the spring 51. The engaging portion 48a is locked into the next concavo-convex portion 47. By repeating this stepwise small angle rotation of the pinion 43, the sector 52 is rotated counterclockwise against the biasing force of the spiral spring 54, and the window glass can be raised stepwise.

On the other hand, when the handle 41 is rotated counterclockwise, the pinion is rotated counterclockwise in steps of small angles in the same manner as described above, and the clockwise rotation of the sector 52 causes the pinion to rotate counterclockwise in small steps. The window glass can be lowered by pressing the button.

Although the above embodiments are applied to a seat reclining device and a wind regulator, the present invention is also applicable to the front and rear or up and down positions of seats in automobiles, etc., the angle or height of lumbar supports, side supports, and head rests. , sunroof deflectors, retractable headlamps, etc.

(Effects of the Invention) As described above, according to the driven member operating device of the present invention, by rotating the operating member, the driven member is rotated by a small angle in stages and locked at each step. This has the advantage that there is no play in the operating members such as the handle, and the operating force is light.In addition, since there are no friction parts like in the past, there is less wear and it is highly durable. This has the advantage that the operation is moderate in stages.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the invention.
3 to 3 show a first embodiment applied to a seat reclining device, in which FIG. 1 is an overall schematic perspective view, FIG. 2 is a front view, and FIG. 3 is an exploded perspective view. FIG. 7 shows a second embodiment applied to a wind regulator, and FIG. 4 is a front view;
Fig. 5 is a side view, Fig. 6 is a - line sectional view, and Fig. 7 is a side view.
The figure is an exploded perspective view. A... Reclining device, 1... Seat, 2
... Seat bottom, 3... Seat back, 4...
Upper fixed bracket, 5...Lower fixed bracket, 6
...Tilt bracket, 6d... Gear part, 7... Coarse adjustment lever, 8... Fine adjustment lever, 8b... Guide groove, 9... Lock plate, 10... Pivot support member, 11... Support shaft member , 14... eccentric shaft, 15...
...Pivot, 19...Cam lever, 26...Engagement piece,
26a...Engaging portion, 27...Abutment pin, 28...
Tension spring, D...wind regulator,
40... Base, 41... Handle, 43... Pinion, 46... Guide groove, 46a... Cam surface,
47... uneven portion, 48... locking member, 48a...
Engaging portion, 50...Abutment pin, 51...Spring, 52
……sector.

Claims (1)

[Scope of Claims] 1. A base substrate, a driven member rotatably attached to the substrate, and a driven member pivotally attached to the substrate concentrically with the driven member and rotatably relative to each other. an operating member; a plurality of concavo-convex portions provided on the substrate in an arc shape at a constant radius from the pivot center; and a rotatable portion provided on the driven member, the distal end of which is engageable with and detachable from the concave-convex portion; A locking member having a mating portion; a spring that biases the locking member to rotate in a direction in which the locking portion engages with the uneven portion; and a contact provided on one of the operating member and the locking member. The connecting mechanism includes a connecting pin and a guide groove provided on the other side and in which the corresponding connecting pin slidably engages, and connects the operating member to the locking member with a predetermined play in the rotation direction thereof. The guide groove has an apex portion at one end with which the abutment pin abuts when the engaging portion of the locking member engages with the uneven portion, and the guide groove has an apex portion at one end with which the abutment pin abuts when the engaging portion of the locking member engages with the uneven portion, and from the apex portion The contact pin is inclined on both sides with respect to the radial direction, and the contact pin is slid so that rotation of the operating member causes the locking member to be rotated in a direction to release the engagement between the engaging portion and the uneven portion. Then, when the driven member rotates about the pivot center by one pitch of the uneven portion via the locking member, the engaging portion engages with the next uneven portion. A driven member operating device characterized in that the driven member operating device is formed on a cam surface that causes the abutment pin to return to the apex portion by the biasing force of the spring.