JPH0336283Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a reclining device used for automobiles, etc., and more specifically, in a reclining device equipped with a planetary gear mechanism, the automatic adjustment of the atsupah arm in response to the rotation or vibration of the handle. The present invention relates to a reclining device equipped with a mechanism for preventing rotation.

<Prior art> In the conventional reclining device shown in FIGS. 1 to 3, the rotation of the upper arm 2 with respect to the lower arm 1 is not performed by the rotation shaft 12 serving as the rotation center axis of the upper arm 2. The structure is such that the operation is performed using an operating handle 24 provided on the lower arm 1 apart from the moving shaft 12. A rotary shaft 12 is rotatably fitted into the lower arm 1, and an atsupah arm 2 having an embossed internal gear is pivotally connected to the rotatable shaft 12, and the lower arm 1 and the atsupah arm An intermediate gear plate 3 having an embossed external gear is mounted between the two. The internal gear has at least one more tooth than the external gear,
Since the upper arm 2 is pivotally supported on the eccentric shaft portion of the rotation shaft 12, the rotation of the rotation shaft 12 causes the upper arm 2 to rotate while swinging while meshing with the external gear of the intermediate gear plate 3. Reference numeral 4 denotes a pawl rotatably attached to the lower arm 1 by a pin 5, which has locking teeth 3a and meshes with locking teeth 4a formed on the outer periphery of the intermediate gear plate 3. Lever 8 or release arm plate 1
Walk-in pedal 17a provided integrally with 7
Rotation of the intermediate gear plate 3 is prevented except when the intermediate gear plate 3 is operated. The release lever 8 is rotatably supported on the rotary shaft 12, has a cam elongated hole, receives a pin implanted in the pawl 4, and rotates the pawl 4 counterclockwise by rotating the pin clockwise. The release arm plate 17, which is pivotably connected to the rotation shaft 12 and integrally has the walk-in pedal 17a, and the pin 20 are rotated to release the mesh with the intermediate gear plate 13. hook plate 19,
Via the connecting pipe 18, it can be interlocked with a release lever (not shown) of the opposite reclining device having substantially the same structure.
A sub-plate 9 holds the lower arm 1, the upper arm 2, the intermediate gear plate 3, a pin, etc. to prevent them from coming off, and is fixed to the lower arm by pins 5, 10 and 11. A sprocket 13 is non-rotatably incorporated into the rotary shaft 12, and a chain 26 is meshed therewith. The chain 26 is engaged with a sprocket 22 integrally formed with a handle shaft 23 which is also rotatably provided on the lower arm 1 via a chain guide 25 fixed slightly below the center of the lower arm 1. , has a function of transmitting the rotational operation of the operating handle 24 to the rotating shaft 12 via the sprocket 13. Numeral 14 is a bushing that ensures smooth rotation of the rotating shaft 12 with the lower arm 1. Reference numeral 15 denotes a spacer fixed to the sub-plate 9, with which an internal gear formed on the opposite side of the external gear of the intermediate gear plate 3 is in sliding contact, and the intermediate gear plate 3 rotates around the spacer. This is taken into consideration. A pin having a slot is fixed to the pin bracket which is fixedly attached to the lower arm 1 with pins 10 and 11, and a hook plate 27 is rotatably pivoted to the pin. A part of the hook plate 27 is in contact with a part of the intermediate gear plate 3, and its center end is hooked to the slotted groove of the pin, and its outer end is attached to a hook formed on the other part of the hook plate 27. Hooked spiral spring 2
A biasing force of 8 is transmitted to the intermediate gear plate 3. spiral spring 28
1 applies a biasing force to the intermediate gear plate 3 in the counterclockwise direction in FIG. 1, and performs a so-called coarse adjustment operation (including a walk-in operation) in which the intermediate gear plate 3 is tilted forward together with the upper arm 2. It is. A cable locking bracket 29 is fixed to the upper arm 1, and one end of the control cable 30 is locked therein. Reference numeral 31 denotes a bracket fixed to the lower side of the sub-plate 9, which holds the intermediate portion of the control cable 30. The control cable 30 is connected to a release lever 8 or a walk-in pedal 17 in order to facilitate the getting on and off of rear seat passengers.
a, pull the upper arm, tilt the seat back (not shown) forward, unlock the seat track (not shown), and move the entire seat forward, which is necessary for the so-called seat walk-in operation. The control cable 30 is pulled when the upper arm 2 is tilted forward, thereby releasing the lock of the seat track. Here, the configuration of the operating handle 24 will be explained in detail with reference to FIG. 3. 23 is the handle shaft 2
A sprocket shaft 1 is rotatably provided with a sprocket 22 formed integrally with the sprocket shaft, and an operating handle 24 is fixed to the end of the sprocket shaft by a conventional method such as an E-ring. The operation of the conventional device having such a configuration will be explained below. When the operating handle 24 is rotated clockwise in FIG. 1, the rotational force is transmitted to the rotating shaft 12 by the chain 26 etc., and the rotating shaft 12 also rotates clockwise.
As a result, the upper arm 2 is rotated clockwise while rocking by the planetary gear mechanism with the intermediate gear plate 3, and the angle adjustment (fine adjustment operation) with respect to the lower arm 1 is performed. Next, when the release lever is rotated clockwise, the pawl 4 is rotated counterclockwise, and the locking tooth 4a of the pawl 4 disengages from the locking tooth 3a of the intermediate gear plate 3, and the upper arm 2
can be rotated together with the intermediate gear plate 3, and a large angle adjustment (rough adjustment operation) is performed. It goes without saying that these operations are linked by an interlocking mechanism to the reclining device on the opposite side, which has a substantially similar structure, and are synchronized on both sides.

<Problems to be Solved by the Invention> Due to its structure, the reclining device having a planetary gear mechanism has a problem in that when the operating handle 24 is pulled due to vibration etc., the rotating shaft 12 rotates. Countermeasures against this problem had become an urgent need.

The present invention was devised in view of this problem, and its purpose is to provide an excellent reclining device with a simple structure that prevents the operating handle from rotating.

<Means for Solving the Problems> The present invention which solves the above-mentioned problems allows the upper arm, which is rotatably incorporated into the lower arm via a rotation shaft, to be finely adjusted by a planetary gear mechanism. An operating handle is provided on the lower arm at a position away from the rotating shaft, and a chain is run in parallel between the sprocket on the operating handle side and the sprocket on the rotating shaft side, and the operating handle is used to remotely control the An adjustable reclining device includes a pinion case fixed to a lower arm, and a handle shaft integrally having one end pivotally supported by the pinion case and a core having a notch in a portion located inside the pinion case. and a sprocket shaft which is rotatable around the handle shaft and integrally includes a tongue piece that enters a notch in the core, a sprocket, and hook parts at both ends that are wound around the outer periphery of the core. A stopper spring formed to be located between the tongue piece of the sprocket shaft and the notch of the core, and a cover bracket that pivotally supports the side of the handle shaft opposite to the pinion case side and are fixed to the lower arm. The present invention is characterized in that it constitutes a handle operating section and is operable when the operating force on the handle shaft side exceeds a certain value.

<Example> Hereinafter, an example of the present invention will be described using FIGS. 4 and 5.

A pinion case 32 is fitted into a hole provided in the lower arm 1 and fixed by a pin 38. 33 is a cover bracket fixed to the lower arm 1 via pins 37, 37. 34
is a handle shaft, which is rotatably arranged by a hole formed in the pinion case 32 and cover bracket 33, and has a core 34b having a notch on the pinion case 32 side and a core 34b on the cover bracket 33 side. The end portion integrally has a serration portion 34a. A sprocket shaft 35 is rotatably disposed on the handle shaft 34 and integrally includes a sprocket 35b and a tongue piece 35a that enters into the notch of the core 34b. 36 is the core 34b
a stopper spring having hooks at both ends that fit around the outer periphery of the stopper spring, each of which has a tongue piece 35;
a and the notch of the core 34b.
A chain 26 is fitted to the sprocket 35b. The present invention has a handle operation section having such a brake mechanism, and the other configurations are the same as those of the prior art, so a description thereof will be omitted.
Now, when the handle shaft 34 is rotated in one direction, the integrally formed core 34b is also rotated. The hook of the stopper spring 36 comes into contact with the notch of the core 34b, but the diameter of the stopper spring is reduced to reduce the contact resistance with the pinion case 32, so rotation is performed smoothly, and the sprocket shaft 35 The tongue piece 35a also rotates together with the handle shaft 34 to rotate the chain 26, thereby rotating the rotating shaft 12 and making it possible to adjust the angle of the upper arm 2. However, when no rotational force is applied to the operating handle 24, the stopper spring 36 is in a tensioned state within the pinion case 32, and therefore does not rotate within the range of its frictional resistance. Note that the present invention is not limited to reclining devices on both sides or reclining devices that have both fine and coarse adjustment operations, but is applicable to any remote-controlled reclining device that has a planetary gear mechanism. Of course.

<Effects of the Invention> As explained above, the present invention has a simple structure in which a simple brake mechanism is built into the operating handle, and is extremely practical because it can prevent the operating handle from rotating.

[Brief explanation of drawings]

FIG. 1 is a front view showing a conventional example. FIG. 2 is a sectional view taken along line A-A in FIG. Figure 3 shows B-B in Figure 1.
Cross-sectional view. FIG. 4 is a sectional view corresponding to the BB section in FIG. 1 showing an embodiment of the present invention. FIG. 5 is an exploded perspective view of an embodiment of the present invention. 1...Lower arm, 2...Atsupa arm, 3...
...Intermediate gear plate, 4...Pole, 5...Pin, 8...Release lever, 9...Sub plate, 12...Rotating shaft, 13...Sprocket, 17...Release arm plate, 17a...
...Walk-in pedal, 18...Connecting pipe, 19...Hook plate, 21...Handle shaft, 22...Sprocket, 23...Sprocket shaft, 24...Operation handle, 25...Chain guide, 26... Chain, 27...Hook plate, 28...Spiral spring, 29
... Cable locking bracket, 30 ... Control cable, 31 ... Bracket, 32 ...
Pinion case, 33...Cover bracket, 3
4... Handle shaft, 34a... Serration part,
34b...Core part, 35...Sprocket shaft, 3
5a... tongue piece, 35b... sprocket, 26...
...Stopper spring, 37, 37...Pin, 3
8...Pin.

Claims (1)

[Scope of utility model registration request] An atsupah arm that is rotatably incorporated into the lower arm via a rotary shaft can be finely adjusted by a planetary gear mechanism, and an operating handle is provided on the lower arm at a position away from the rotary shaft, and the operating handle In a reclining device in which a chain is connected in parallel between a side sprocket and a sprocket on the rotating shaft side, and fine adjustment can be made by remote control using an operating handle, a pinion case fixed to a lower arm and a corresponding a handle shaft integrally having a core having one end pivotally supported in the pinion case and having a notch in a portion located inside the pinion case; and a handle shaft that is rotatable about the handle shaft and enters the notch in the core. a sprocket shaft integrally having a sprocket tongue and a sprocket; The handle operating section is composed of a stopper spring and a cover bracket that supports the opposite side of the handle shaft from the pinion case side and is fixed to the lower arm, and when the operating force on the handle shaft side exceeds a certain value, A reclining device characterized by being operable.