JPH0456602B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a reclining device that employs a constantly meshing locking mechanism using a planetary gear mechanism that connects a seat back to a seat cushion so that the rotation angle can be freely adjusted. In particular, the present invention relates to a reclining device that includes a front-rear sliding mechanism that tilts the seat back forward toward the seat cushion by rotating a sub-plate holding member, and moves the entire seat forward in conjunction with this.

[Prior art]

Conventionally, in two-door type automobiles, etc.
When a passenger sitting on the rear seat side gets in and out of the vehicle, the seat back of the front seat is tilted forward and
A walk-in mechanism is used to move the front seat to the frontmost position in the vehicle interior, making it easy to get in and out of the rear seat. Generally, such a walk-in mechanism is configured to operate the locking mechanism of the longitudinal slide mechanism in conjunction with a reclining device that supports the seat bag in a tiltable manner relative to the seat cushion. This is causing some problems.

In other words, what is required of this type of reclining device is a structure that is as simple as possible.
It has excellent moldability and assemblability, and is not only inexpensive, but also allows the seat back to be tilted freely and at an appropriate angle, is easy to operate, and can withstand the load of the occupant. It is possible to reliably maintain the locked state. In order to meet these demands, a constantly meshing reclining device has been proposed in recent years that employs a locking mechanism that skillfully utilizes a planetary gear mechanism, etc. However, with such a configuration,
When tilting the seat back forward toward the front of the seat, it is necessary to rotate an adjustment dial, etc., so that the forward tilting operation of the seat back, which is linked to the above-mentioned longitudinal slide mechanism, can be performed quickly and appropriately with a single touch. I couldn't say that. This is because in conventional reclining devices, even if the sub-plate holding member is rotated to release the seat back from its locked state and tilt forward, the locked state is simply released and the seat back does not move forward. Therefore, in order to tilt the seat bag forward, the above-mentioned troublesome operation is required.

[Summary of the invention]

The present invention has been made in view of the above circumstances, and includes a base and an arm that are respectively attached to the seat cushion and the seat back and are mutually rotatably supported on a rotary operation shaft. The sub-plate holding member is rotatably supported, and the sub-plate, which is normally integrated with the base, is supported rotatably on the rotary operation shaft by being locked by the sub-plate holding member. A plurality of planetary gears are provided on the rotary operation shaft and meshed with internal gears in circular holes formed on opposing surfaces of the sub-plate and the arm. The sub-plate and the arm are interposed in a constant engagement type locking mechanism that connects the sub-plate and the arm in a state where the relative rotation angle between them can be adjusted. A simple configuration in which a slide lock release member is provided that releases the locked state by separating the sub-plate from the side and unlocks the seat's longitudinal sliding mechanism by the rotation of the arm that tilts forward toward the front of the seat. This makes it possible to easily and appropriately obtain the forward tilting state of the seat back and the unlocking state of the seat longitudinal slide mechanism by simply rotating the sub-plate holding member, eliminating the need for troublesome operations as in the past. The planetary gear mechanism provides superior operability as it can be performed with a single touch, and also offers advantages such as simplifying the overall configuration and improving operational reliability of each part. The present invention provides a reclining device that employs a constantly engaged locking mechanism.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

FIGS. 1 and 2 show an embodiment of a reclining device equipped with a longitudinal sliding mechanism according to the present invention. Briefly, this reclining device 10 includes a base 11 and an arm 12 that are respectively attached to a seat cushion and a seat back (both not shown) that constitute a seat. The base 11 and the arm 12 are provided with circular holes 11 with different diameters on the same axis (on the seat support shaft serving as the rotating operation axis).
a, 12a are formed, and both are rotatably combined with each other. Further, the base 11,
A sub-plate 13 is disposed between the arms 12 and is integrated with or separated from the base 11 side by a sub-plate holding member to be described later, and this sub-plate 13 has a circular hole coaxially with the circular holes 11a and 12a. 13a is formed.

Then, this sub-plate 13 and the arm 1
Inside the hole edges of the second circular holes 13a and 12a, internal toothed portions 14 and 15 having different numbers of teeth are formed, respectively.
These are connected by a lock mechanism 16 using a planetary gear mechanism so that the rotation angle can be freely adjusted. That is, the lock mechanism 16 includes a plurality of planetary gears 17 having first and second teeth 17a and 17b that mesh with the internal teeth 14 and 15, respectively.
It is disposed coaxially with both of the members 13 and 12 (furthermore 11) so as to mesh with the teeth of one of the planetary gears 17 (17b in this case), and rotates in response to the seat reclining adjustment operation. and a control gear 18 as a sun gear. This control gear 18 is rotated by manual rotation of an operating knob 20 provided via a connecting plate 20a to an outer end 19a of an operating shaft 19 disposed passing through these members. .

In addition, in the figure, 21 is a stabilizer, 22 is arranged on the outer end side of the arm 12, and a screw 23 is provided.
This is a cover that is assembled to the base 11 side at points a and 23b. Furthermore, in this embodiment, a case is shown in which the planetary gear group is constituted by a stepped planetary gear group 17 that integrally has the first tooth portion 17a and the second tooth portion 17b. but not limited to,
Of course, each tooth portion may be constructed separately.

According to such a configuration, the control gear 1
8 in a desired direction with the knob 20, each planetary gear 17 rotates, and the base 11
The sub-plate 13 which is always integrated with the
The internal toothed portion 14 becomes the fixed side, and the second toothed portion 1
The arm 12 having the internal teeth 15 meshing with the seat 7b is rotated, making it possible to freely and steplessly tilt the seat back in a desired direction.
Here, the relative rotation angle of the seat bag with respect to the seat cushion is determined by the first and second toothed portions 17a, 17b of the planetary gear 17, the control gear 18, the sub-plate 13, and the internal toothed portion 1 of the arm 12.
This is determined by the difference in the number of teeth, such as 4 or 15, and may be determined as appropriate as necessary.

Furthermore, when the control gear 18 is stopped, the arm 1
2 is a sub-plate 1 that is integrated into the base 11 side of the fixed part via its internal toothed part 15 and the second and first toothed parts 17b and 17a of the planetary gear 17.
It is meshed with and connected to the internal teeth 14 of No. 3, and as a result is locked in that position.

Now, according to the present invention, in the reclining device 10 having the above-described configuration, the sub-plate holding member 30 is rotatably supported on the base 11 which is coaxially supported with the arm 12 so as to be rotatable with respect to the base 11. ing. This sub-plate holding member 3
0 is formed by first and second holding members 30a and 30b, and this base 11 is locked by the locking claw 31a of the second holding member 30b.
The sub-plate 13 is integrated into the second holding member 30b by the forward tilting operation force transmitted to the first holding member 30a through the wire 32 or the like.
The slide lock is rotated by the rotation of the arm 12, which is rotated in the release direction, detached the sub-plate 13 from the base 11 side, and released the locked state of the arm 12, thereby tilting forward toward the front of the seat. The seat is characterized in that it includes a release member 33, and the rotation of the slide lock release member 33 brings the seat back and forth slide mechanism 34 into an unlocked state.

Here, the walk-in mechanism that performs the above-mentioned operation includes a wire 35a that transmits the forward tilted state of the seat bag obtained by the slide lock release member 33, and a wire 35a that transmits the forward tilted state obtained by the slide lock release member 33. The lock lever 35b constitutes a locking mechanism that is moved to unlock the longitudinal slide mechanism 34. In short, it is sufficient that the mechanism for sliding the seat cushion in the longitudinal direction of the seat is unlocked when the seat bag is tilted forward, and the entire structure can be moved forward.

In the figure, reference numeral 36 denotes an engaging portion where the locking pawl 31a of the sub-plate holding member 30 formed on the outer periphery of the sub-plate 13 is locked, and 37 denotes an engaging portion where the sub-plate holding member 30 is always attached in the locking direction. It is a spring that acts as a force. Further, numeral 38 is a stopper which is fixed to the upper part of the arm 12 and limits the rotating range of the seat back by stepped portions 39a and 39b formed on the base 11 side, and 40 is the slide lock release member which is erected on the arm 12. A pin 41 is formed at the other end of the slide lock release member 33 to which the wire 35a of the walk-in mechanism is engaged.

In addition, in the embodiment described above, the sub-plate holding member 30 is connected to the first and second holding members 30.
Although the case where the pins a and 30b are formed has been described, they may be formed integrally, and the pin 41 may be provided on the arm 12.

According to such a configuration, by manually rotating the sub-plate holding member 30, the locked state of the sub-plate 13 is released and the sub-plate 13 is separated from the base 11 side, and is placed in a free state. shall be. Then, this sub-plate 1
The arm 12, which is connected to the seat 3 via the lock mechanism 16, is in an unlocked state and is tilted forward toward the front of the seat. This forward tilting operation of the arm 12 causes the engagement pin 40 to rotate the slide lock release member 33 in the counterclockwise direction in the figure.
5b is activated.

Furthermore, when the seat is lifted up, the arm 12 and sub-plate 13 rotate in the opposite direction to that described above.
When it reaches the position corresponding to the locking claw 31a of the sub-plate holding member 30, it is locked again at the original angle of inclination. Here, if the above-mentioned walk-in mechanism is provided with a memory mechanism, the seat cushion will similarly move to the rear of the seat and return to its original state.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part may be modified and changed as necessary. For example, the internal teeth of the sub-plate 13 and the arm 12 14,15
A planetary gear 1 having the same addendum circle and different numbers of teeth, and having first and second tooth portions 17a and 17b in the internal tooth portions 14 and 15, respectively.
7 may be meshed with each other, and the planetary gear may be a simple spur gear in which the first and second tooth portions 17a and 17b that are meshed with the internal tooth portions 14 and 15 have the same number of teeth. may also be used. Further, the number of teeth of each tooth portion, the size of the addendum circle, and the number of planetary gears are selected as necessary. It is also clear that it is preferable to mesh with either one of the teeth.

Furthermore, the reclining device configured as described above can be easily used as a both-side reclining device by simply providing left and right connecting shafts at its center of rotation. Further, the reclining device according to the present invention is not limited to a manual type, but may be a power type using a motor, for example, and can be applied to other vehicle seats other than the above-mentioned embodiments to achieve its effects. It is possible to make the most of this.

〔Effect of the invention〕

As explained above, according to the reclining device according to the present invention, of the base and the arm that are respectively attached to the seat cushion and the seat back and are mutually rotatably supported on the rotary operation shaft, the sub-base is attached to the base side. The plate holding member is pivotally supported so as to be rotatable, and the sub-plate, which is normally integrated with the base, is rotatably supported on the rotary operation shaft by being locked by the sub-plate retaining member. and has a plurality of planetary gears each meshing with internal gears in circular holes formed on opposing surfaces of the sub-plate and the arm, and a control gear provided on the rotating operation shaft in meshing with these planetary gears. A constantly engaged locking mechanism is provided to connect the sub-plate and the arm in a state where the relative rotation angle between them can be adjusted. Since the locking state is released by separating the sub-plate from the seat, a slide lock release member is provided, which unlocks the front and rear slide mechanism of the seat by the rotation of the arm that falls forward in front of the seat. Despite its simple and inexpensive configuration, it is possible to prevent the seat back from falling forward and the seat back and forth sliding mechanism from unlocking.
It can be easily and appropriately obtained by a simple rotation operation of the sub-plate holding member, eliminating the need for the troublesome operations required in the past.Moreover, it is superior in terms of operability as it can be performed with a single touch, and the overall structure of the device is It has various excellent effects, such as simplifying the system and improving the operational reliability of each part.

In particular, in the present invention, the locking mechanism of the reclining device is constructed by skillfully utilizing a planetary gear mechanism, and by further combining this with a motor etc., it is simple, has a small number of parts, is small, lightweight, and compact. Despite its simple configuration, the seat back can be adjusted steplessly in a desired direction with a simple operation, and the seat back can be easily and reliably locked in the adjusted position without rattling. This also has the advantage of improving the operational performance of the front-back sliding mechanism.

[Brief explanation of drawings]

FIG. 1 is a schematic exploded perspective view showing one embodiment of a reclining device according to the present invention, and FIG. 2 is a schematic side view showing only the main parts thereof in an enlarged manner. In the figure, 10... Reclining device, 11...
Base, 12...Arm, 13...Subplate, 14, 15...Internal gear, 16...Lock mechanism, 17...Planetary gear, 18...Control gear, 19
...Operation shaft, 20 ... Operation knob, 30 ... Sub-plate holding member, 31a ... Locking claw, 32 ... Wire for transmitting forward tilting operation force, 33 ... Slide lock release member, 34 ... Front and rear slide Mechanism, 40...
...Engagement pin, 41...pin.

Claims (1)

[Claims] 1. A base and an arm that are respectively attached to the seat cushion and the seat back and are mutually rotatably supported on a rotary operation shaft, and a sub-plate holding member rotatably supported on the base side; A sub-plate that is fixed by the sub-plate holding member so as to be rotatably supported on the rotation operation shaft so as to be normally integrated with the base, and the sub-plate and the arm. The sub-plate and A constantly engaged lock mechanism that connects the arms in a state where the relative rotational angle between them can be adjusted; and the subplate is separated from the base side by the rotational movement of the subplate holding member. 1. A reclining device comprising: a slide lock release member that unlocks a seat back and forth sliding mechanism by a rotating operation of an arm that is released from a locked state and falls forward in front of the seat.