JPS58174753A - Torque transmitting device with locking mechanism - Google Patents

Abstract

PURPOSE:To improve operating properties, by turning an operating member at a driving side to simultaneously perform unlocking and motive power transmission to a driven side. CONSTITUTION:In a free state with no force applied to an operating member 37, the large-diameter portions 17a, 18b of intermediate gears 17, 18 are engaged with a driven gear 11 by elastic members 16, 16 so that the driven gear is locked. When the operating member 37 is attached to the shaft 27a of a first driving gear 27 and pushed and turned clockwise, a movable plate 15 is turned in a direction F1 so that one intermediate gear 17 is separated from the driven gear 11 and it is unlocked. As a result, the clockwise torque applied to the first driving gear 27 is transmitted to the driven gear 11 through a second driving gear 28 and the large and small-diameter portions 18a, 18b of the intermediate gear 18 so that the driven gear is turned counterclockwise.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotational force transmission device having a locking mechanism that transmits rotational force applied to a driving gear to a driven gear and prevents rotational force applied from the driven gear side from being transmitted to the driving gear. .

Rotational force transmission devices N having a combination of gears are widely used in various structures, and devices in which the gears can be locked by a combination of gears and latches are also known.

For example, in a car seat reclining device, a gear and a latch are released from each other by operating a lock operating lever, and then a driving force separate from that of the operating lever is applied to adjust the desired position. ing.

In this way, in the past, the valve opening lever was used only to release the lock, and in order to apply driving force to the gear etc. in the valve opening state, K was used for opening and closing operation. This had the disadvantage of poor operability, as it required a separate driving force from the lever, and the release of the lever and transmission of power could not be performed in one motion.

The present invention has been made based on the above-mentioned circumstances, and its purpose is to simultaneously release the gate and transmit power to the driven side by rotating the operating element on the driving side, and to It is possible to provide a rotational force transmission value with a locking mechanism that allows the drive ear to be rotated in the same direction regardless of whether the operator is rotated in the forward or reverse direction.

That is, the present invention includes a gear case, a driven gear rotatably mounted on the gear case, a movable plate provided on the gear case so as to be movable in directions toward and away from the driven gear, and a rotatable plate on the movable plate. a pair of intermediate gears that are freely attached and mesh with each other, and that are movable in directions toward and away from the driven gear with one of the intermediate gears as a rotation center; At the same time, an elastic member is biased in a direction to mesh with the driven gear, and a first drive gear and a second drive gear are rotatably attached to the movable grate and mesh with each other, and mesh with the pair of intermediate gears, respectively. , and an operator attached to these drive gears to apply rotational force to the drive gears.

In the present invention constructed as described above, in a free state in which the operator K (b) is not provided with a power transmission chamber, both intermediate gears are in a locked state in mesh with the driven gears by the elastic force of the elastic member. Therefore, the transmission force applied from the driven gear is not transmitted to the driving gear.

When the operating consonant attached to the drive gear w, 1 of the first and wJ2 drive gears is rotated, for example, in a clockwise direction, the movable plate is integrally rotated in that direction by this rotational force. Due to the dynamic displacement, one of the intermediate gears that meshes with the first drive gear is separated from the driven gear, and the other intermediate gear meshes with the second drive gear and the band gear, resulting in a good condition. Therefore, the rotational force applied to the operator is [
IK is transmitted from the first drive gear to the second drive gear to one of the intermediate gears to the driven gear, thereby causing the driven gear to rotate in the counterclockwise direction. In addition, the above controller [counterclockwise i
When you turn K, the movable plate will rotate in this direction as one unit, and l! The intermediate gear that meshes with the drive gear No. 2 moves away from the driven gear, and the intermediate gear that meshes with the drive gear IIIC) becomes in mesh with the driven gear. Therefore, the rotational force applied to the operator is transmitted from the Fi island 10 drive gear to the Nakaseki ear to the wrinkling gear, making it possible to rotate the driven gear in the same counterclockwise direction as the drive gear in line 1. Φ
That is, even if the drive gear Ill is rotated in forward and reverse directions, the driven gear can be rotated in one direction.

On the other hand, when the second drive ear is rotated by the operation performed on the second drive gear, the direction of rotation of the driven gear is opposite to that described above. In other words, when the operator is rotated clockwise, for example, the rotational force is transmitted from the second drive gear to the intermediate gear to the driven gear, making it possible to rotate the driven gear clockwise. When rotating counterclockwise, the rotation is transmitted from the second drive gear to the first drive gear to the intermediate gear to the fist of the driven gear, and the driven gear can be rotated clockwise.

That is, even if the second drive gear is rotated in either the forward or reverse direction, the driven gear can be rotated in one direction.

An embodiment of the present invention will be described below with reference to the drawings. In the drawing, 1 is a gear case. This gear case 1 includes:
Metal case structure 1&.

1b, each case structure 1 &.

1b is a through hole Ja formed in the mutual joint surfaces.

2bK〆)K can be inserted and tightened, or connected by repeating, tightening, etc.

The valley case structures 1 m and 1 bK each have a bearing hole S for supporting a driven gear 11, which will be described later.

When 4 is formed, an intermediate gear 17, which will be described later, is formed.
Axis III 13. ! Long holes 5, θ, 7, 8 to be inserted if
is formed.

An output shaft 1o is rotatably supported in the bearing holes 3 and 4, and a driven gear 11 is attached to the output shaft 1o with a set screw 11*.
K is set so that it is fixed using f. t, the above
1111oKFi output gear 12 is fixed using a stopper 12&[. Therefore, the driven gear 11
and the output gear 12 rotate together. In addition, driven gear °11
A sweep ring IJ is provided between and the case component 1a.

Also, a movable plate 15 is provided between the case components Ja and Jb.
is provided. This movable plate" consists of a pair of fL/-) structures 15a and llb made of, for example, metal plates, and is movable in the direction toward and away from the driven gear 11, and is made of elastic members 1fi, J. The driven gear 11@ is always driven by the tension ring as an example of
is energized by

A pair of intermediate gears 17 is attached to the movable grate 15. I
ll are attached in a state where they are interlocked with each other. That is, one intermediate gear 11 is constructed by coaxially connecting each other using the large diameter gear part 11& and the small diameter ear part 17b'ljf key 17cf. The other intermediate gear 18 is also constructed by coaxially connecting a large diameter gear portion 78& and a small diameter gear portion 18b to each other using a key 18c. Through holes 19 and 20 formed in each grate structure 1a and 15b,
21 and 211, intermediate gear 17 and l1jO shaft 2, respectively.
3.24 are inserted, and both ends of these shafts 23, 24 are movably inserted into the elongated hole 5°6.7.8. and each intermediate gear 17. l1jd the elastic member 1
With an elastic force of 6°16, it is always as shown in Figure 2.
,, :(:1 The large diameter gear parts 17 and 18m are located in a state where they are simultaneously engaged with the driven gear 11, but as shown in FIGS. 3 and 4, the movable plate 15 is rotated in either direction. In this state, each of the intermediate gears 11, 18Fi is separated from the driven gear 11 with one shaft 23, 14 as the rotation center.

Further, a first drive gear 27 and a second drive gear 28 are each rotatably attached to the movable plate IIK. These first and second drive gears 27, 21jFi mesh with each other, and also mesh with the small diameter gear portions 11b, 111b of the pair of intermediate gears 17.degree. 18, respectively. These drive gears sr and xttFi are fixed to drive shafts 27m and 28m, respectively, using setscrews 29.19'ff.

In addition, through-holes SO are provided in the drive shafts 77&, jJaij% plate structures 15m and 16b.

31, 32, and 33 to be inserted and supported.

Further, the ends of the drive shafts j17a and IIIm are inserted into the through holes 35.3g provided in the case structure 1b and protrude to the outside. The lever can be removably fitted. That is, this operator 37 is connected to the drive shafts 27m and 28m.
The drive shaft 27a is selectively attached to either one of the drive shafts 27a.

It is designed to be able to drive 28 Hou. .

Next, the effect of mounting the Uemachi embodiment will be explained.

First, in a free state where no force is applied to the operator 31, each large diameter gear portion 17m, llb of the intermediate gear 17.18 is driven by the elastic force VC exerted by the elastic member 16.16, as shown in FIG. Since the driven gear 11 is engaged with the gear 11, the driven gear 11 cannot rotate and is maintained in a locked state.

In this state, when the operator 37 is attached to the shaft 27a of the first drive gear 27 and the operator 37fr is pushed in the direction shown in the diagram, the movement grate 15 moves in the direction of the arrow F1 as shown in FIG. Due to the rotational displacement, one of the intermediate gears 17 separates from the driven gear 1), and the locked state is released. Therefore, the clockwise rotational force applied to the first drive gear 27 is transmitted to the driven gear 1 through the second drive gear 28 and the large diameter gear portion I8a and the small diameter gear portion 18b1 of the intermediate gear I8.
1, and the driven gear 11 rotates counterclockwise.

Furthermore, when the operator 5rtl is pushed and turned counterclockwise in the drawing, the movable plate 15 is rotated in the direction of arrow F1 as shown in Figures 11 and 4, and the other intermediate gear 11 is turned into the driven gear. Away from 11, mouth and evening are released. Therefore, the rotational force in the counterclockwise direction applied to the driving gear 2r of the number I is transmitted to the driven gear 11 through the large diameter gear portion 17& and the small diameter gear portion Irbt- of the intermediate gear 17, and is transmitted to the driven gear 1! It still rotates counterclockwise.

In other words, I! Even when the first driving gear 21t is rotated in either the forward or reverse direction, the driven gear 11t can be rotated counterclockwise. In other words, the output gear 12t-
It can rotate in one direction.

For example, in the case of an automobile seat reclining device, the output ear 12 becomes a driving force that adjusts the seat inclination [v4], and when applied to a seat adjuster device, it becomes a driving force that adjusts the position of the seat in the longitudinal direction. It becomes the driving force for

On the other hand, the shaft 28a of the drive gear 28 of the operator j7t-1!2
If the second driving gear 28 is rotated instead, the driven gear llf can be rotated in the opposite direction to that described above.

In other words, lll! For example, when the drive gear 28t of No. 2 is pushed and turned in the clockwise direction in the drawing by the operator 37,
The movable plate 15 is rotationally displaced in this direction, and one of the intermediate gears 17 is separated from the driven gear 11 and becomes unlocked, so that the rotational force of the second driving gear 28 is applied to the large diameter gear portion of the intermediate gear 18. 18a and the driven gear 1 via the small diameter gear portion 18bf.
1, and the driven gear IIFi rotates clockwise.

Next, when the second driving gear 28 is rotated counterclockwise, the movable plate 15 is rotated in the same direction, and the other intermediate gear 18 is now separated from the driven gear 11. Therefore, the rotational force is transmitted from the second drive gear 28 to the first drive gear 27 to the middle gear 1r to the driven gear 11, and the driven gear 11#-i rotates clockwise.

As is clear from the above description, the second drive gear 28 (driven gear 1) can be rotated in one direction even if it is rotated in either the forward or reverse direction.

As described above, according to the device iK of the present embodiment, no matter whether the operator S1 is rotated in the forward or reverse direction, the mouth remains open.

It is possible to release the tension and transmit power to the driven gear 11 at the same time. Therefore, desired forward and reverse rotational forces can be obtained by operating only one operator 31, making the operation extremely easy.

In addition, the power can be extracted in one direction by simply rotating the operator j7t back and forth without rotating it fully, and the power can be taken out in both directions when the operator 37 moves forward and backward! Since the entire power can be taken out, the movement of the operator 37 can be transmitted to the driven gear 11 without waste, resulting in high power transmission efficiency.

Moreover, the operator 31t only needs to be rotated back and forth.
For example, it can be easily operated even if it is installed in a narrow place near the bottom of the seat, such as an automobile seat glue-clining device.

In the above embodiment, each of the intermediate gears 17 and 18 was designed to obtain a desired gear ratio by combining two gears with different diameters, but the present invention uses intermediate gears each consisting of one gear. can also achieve the intended purpose.

However, the operator 31 is not limited to a lever-like one, but may also be a dial-like knob, for example. In carrying out the present invention, the gear case, each gear, movable plate, elastic member, etc. may be modified without departing from the gist of the present invention. It goes without saying that the shape and structure can be modified and implemented in various ways.

Since the heathering aA is constructed and operates as described above, it is possible to release the lock and transmit the power at the same time in one action, and even if the operator is rotated in either the forward or reverse direction, it will rotate forward in the same direction. Thoughts can be reversed. Therefore, it is very easy to operate and has the great effect of being able to reliably move the driven gear to any desired position.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Figure 1 is an exploded perspective view;
ill! 2 to 4 are schematic diagrams showing the meshing states of gears in different operating states. 1... Gear case, lj-... Driven gear, 15...
Movable grate, 16... Elastic member, 11, 111...
・Intermediate gear, 27...ii! 1 drive gear, 28...
・WJ2 drive gear, 37...operator.

Claims (2)

[Claims] (1) A gear case, a driven gear rotatably attached to the gear case, a movable grate provided in the gear case so as to be movable toward and away from the driven gear, and a movable grate rotatably attached to the movable grate. a pair of intermediate gears that are attached to the driven gear and are always in mesh with each other, and that are movable in directions toward and away from the driven gear with one of them as a rotation center; an elastic member biased in a direction to mesh with the driven gear; a first drive gear and a second drive gear rotatably attached to the movable plate and meshing with each other and meshing with the pair of intermediate gears; A rotational force transmission device with a locking mechanism, comprising: an operator attached to a drive gear to apply rotational force to the drive gear. (2) The above operator is the above #! The opening and closing mechanism according to claim (1) is detachably attached to the first and second drive gears, and is selectively attached to either one of the drive gears. Rotational force transmission device.