JPH0513677B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a drive wheel incorporating a mainspring power device.

<Prior art> Previously, Utility Application No. 58-51672 (Utility Application No. 59-156693)
There was a device described in the specification and drawings originally attached to the application in No.

<Problems to be Solved by the Invention> In the conventional technology, "when the first idler gear 9 moves within the first elongated hole 17 and the second idler gear 16 moves within the second elongated hole 18," Normally, this is done by the gear's own weight or by contact with other gears (finishing action due to the rotation of other gears), but if the idle gear is The movement is influenced by the frictional resistance between the spindle of the idler gear and the elongated hole, and has the disadvantage that movement cannot be carried out accurately.

It seems that increasing the diameter of the long hole will make the movement of the support shaft smoother, but the support shaft will also have some slack in the width direction of the long hole, causing it to tilt and hit the long hole. Therefore, the diameter of the long hole must be made close to the diameter of the support shaft, but if this is done, frictional resistance will occur between the support shaft and the long hole, making it impossible to ensure the movement of the idle gear. In particular, in the case of the present invention, since the power is provided in the wheels, it is necessary to downsize the wheel, but the smaller the wheel is, the more the above-mentioned drawbacks become a problem in terms of product quality control.

<Means for Solving the Problems> A drive wheel incorporating a power device of the present invention includes a wheel formed with a required space to accommodate a mainspring and a plurality of gears, and a wheel inside the wheel. A fixed gear located at the center of rotation and having a protruding boss portion and fixed to the vehicle body so as to be rotatable relative to the wheel, and a fixed gear located at the center of rotation within the wheel and engaged with the outer peripheral portion thereof. a mainspring; a sun gear provided between the fixed gear and the mainspring in the wheel; a sun gear that is engaged with the inner end of the mainspring and is rotatable relative to the wheel and the fixed gear by the mainspring; and a sun gear that is pivotally supported by the wheel. a first planetary gear that meshes with the first planetary gear, and a wheel that directly or indirectly meshes with the first planetary gear on the front side in the planetary rotation direction than the first planetary gear when the wheel is traveling and rotates, and that always meshes with the fixed gear and is used for winding the mainspring. a second planetary gear supported with a play in the shaft portion so as to be disengaged from the first planetary gear during rotation; a third planetary gear supported by the wheel and meshed with the fixed gear; On the other hand, when the wheel rotates for winding the mainspring, it directly or indirectly meshes with the third planetary gear on the front side in the planetary rotation direction compared to the third planetary gear, and always meshes with the sun gear, and disengages from the third planetary gear during running rotation. The fourth planetary gear is supported with play in the shaft portion as shown in FIG.
The second planetary gear is biased by the first spring in a direction in which meshing with the first planetary gear is maintained, and the fourth planetary gear is disengaged from the third planetary gear by the second spring. It has a configuration in which it is biased in the direction.

<Function> In the present invention, the second planetary gear (idle gear)
The fourth planetary gear (idle gear) is biased by the second spring in the direction in which the meshing with the first planetary gear is maintained, and the fourth planetary gear (idle gear) is biased in the direction in which the meshing with the third planetary gear is disengaged by the second spring. Since it is energized, movement of the idler gear is ensured.

<Example> An example of a driving wheel incorporating a mainspring power device of the present invention will be described with reference to FIGS. 1, 2, and 3.

First, to explain the configuration, this drive wheel has a fixed gear 2 fixed to the vehicle body B at the center inside the wheel 1.
Mainspring 3 and sun gear 4 driven by the mainspring
and second and third planetary gears 5 and 6 that mesh with the fixed gear 2 around the inside of the wheel 1.
A first planetary gear 7 that meshes with the sun gear 4 and the planetary gear 5, a fourth planetary gear 8 that meshes with the sun gear 4, and a planetary gear 9 that is integrally provided with the planetary gear 6 and meshes with the planetary gear 8. Provided, planetary gear 5
is made into an idle gear so that it can be disengaged from the planetary gear 7, and is biased by the first spring 10 to maintain the meshing with the planetary gear 7, and the planetary gear 8 is made to be an idle gear so that it can be disengaged from the planetary gear 9. is an idle gear and is biased by a second spring 11 so as to disengage from the planetary gear 9. The axle 12 is provided so as to pass through the fixed gear 2 and the sun gear 4, and the planetary gear 7 The tooth width is increased so as to mesh with the gear 4 and the planetary gear 5, and the tire 13 is fitted onto the wheel 1.

The wheel 1 consists of a female wheel 1a, a male wheel 1b, and a middle plate 1c, which are assembled using screws 14. In order to give play to the planetary gear 7, arc-shaped elongated holes 15 and 16 are bored in the male wheel 1b and the middle plate 1c, and in order to give play to the planetary gear 8, the female wheel 1a is formed.
Long arc-shaped holes 17 and 18 are formed in the male wheel 1b. The mainspring 3 is housed in such a manner that its outer circumferential portion 3a is engaged with the central recess of the female wheel 1a, and is closed by a middle plate 1c, and its inner end 3b is engaged with the slitted shaft portion 4a of the sun gear 4. are combined.

Next, the effect will be explained.

Now, when the drive wheel is placed on the floor in the direction of arrow M in FIG. I will do it. Then,
a planetary gear 8 removably meshing with the planetary gear 9;
The planetary gear 9 meshing with the fixed gear 2 is indicated by the arrow N.
Since it rotates in the direction of the arrow O, power is transmitted from the planetary gear 9 to rotate in the direction of the arrow O. On the other hand, since the planetary gear 5 is directly meshed with the fixed gear 2, the fixed gear 2 rotates in the direction of arrow P.
Since it revolves around in the direction of arrow M, the planetary gear 7
Move so that it meshes with the

Therefore, the planetary gear 7 revolves around the fixed gear 2 in the direction of arrow M while rotating in the direction of arrow Q, and rotates the sun gear 4 in the direction of arrow Q, which is the same direction as the forced rotation direction M of wheel 1. It will rotate on its own axis. As mentioned above, the planetary gear 8 is rotating in the direction of the arrow O, and in order to engage with the sun gear 4 which is rotating in the direction of the arrow Q, it is difficult for the planetary gear 8 to disengage itself from the engagement with the planetary gear 9. In this case, the second spring 11 is of no particular use.

Therefore, when the drive wheel is placed on the floor in the direction of arrow M and forced to rotate in the reverse direction, the planetary gear 8 will be rotated by the power transmitted from the planetary gear 5, and the mainspring 3 will be wound up.

That is, in order to wind up the mainspring 3, it is sufficient to forcibly rotate the drive wheel in the direction of arrow M in FIG.

In the above case, the first spring 10 will effectively help the planetary gear 5 to mesh with the planetary gear 7. This is because the winding resistance of the mainspring 3 is transmitted to the planetary gear 7, so in order for the planetary gear 5 to mesh with the planetary gear 7 and transmit rotation, the planetary gear 5, which is an idle gear, must be maintained so as not to escape. This is because it is necessary to

Next, when the hand that is restraining the car body is released from the state in which the mainspring 3 is wound up, the biasing force of the mainspring 3 becomes a driving source and the sun gear 4 is rotated in the direction opposite to the arrow R in Fig. 1. become.

Therefore, since the planetary gear 8 is directly meshed with the sun gear 4, it rotates in the direction opposite to the arrow O, and the sun gear is rotated so as to mesh with the planetary gear 9 against the bias of the second spring 11. It will move around 4. Then, the planet gear 6, which is integral with the planet gear 9 and meshes with the fixed gear 2, should be meshed with the planet gear 8 by revolving around the fixed gear 2 in the opposite direction to the arrow R of the sun gear 4. Attempt to perform rotation. This means that the wheel 1 attempts to run and rotate in the direction opposite to the arrow M. On the other hand, the sun gear 4 has planetary gears 7,
Since the wheels 1 are engaged with each other through the arrow 5, unless this engagement is released, the wheel 1 will not be able to travel and rotate in the direction opposite to the arrow M. However, in addition to the planetary gear 5 attempting to rotate in the direction opposite to the arrow P due to engagement with the planetary gear 7, the wheel 1 is also subjected to a revolution action in which the wheel 1 attempts to run and rotate in the direction opposite to the arrow M. The gear 7 is maintained in a disengaged state by itself against the bias of the spring 10 of the gear 7.

Therefore, the wheel 1 can rotate in the direction opposite to the arrow M, that is, can rotate forward. In this case, the rotation of the sun gear 4 is
Since the planetary gears 6 and 9 are integrated, not only is the speed increased with the gear ratio of the planetary gear 6 and the fixed gear 2, but also the speed is increased with the gear ratio of the planetary gear 6 and the fixed gear 2. By meshing and revolving around the fixed gear 2, the gear 6 executes the rotation that should be performed by meshing with the planetary gear 8, so the rotation of the sun gear 4 does not use the planetary gear. This results in an extremely large speed increase that cannot be compared to a gear speed increase mechanism.

In this way, the mainspring 3 may become completely loosened during running after repeating the drive several times, but in this case, the sun gear 4 and the planetary gears 8 can be viewed from the whole as long as the drive wheels are running and rotating. When the wheel is rotated, it is rotating, but since it is engaged with the mainspring 3, when viewed relative to the wheel 1, the rotation has stopped. Therefore, if the mainspring 3 is completely loosened while the vehicle is running and the planetary gear 8 remains engaged with the planetary gear 9, the fixed gear 2 will no longer be able to brake. However, if the driving wheels are running and rotating, the planetary gear 9 will rotate in the direction opposite to the arrow N and revolve around the fixed gear 2 in the direction opposite to the arrow R. , the meshing with the planetary gear 9 is disengaged due to the meshing reaction force from the planetary gear 9. At this time, the second spring 1
1 biases the planetary gear 8 so as to disengage from the planetary gear 9, so it very effectively helps the planetary gear 8 to disengage from the planetary gear 9.

Therefore, the planetary gear 8 will revolve in a state where the meshing with the planetary gear 9 is released, and therefore,
The sun gear 4, which is no longer driven by the mainspring 3 while the driving wheels are running, is no longer engaged with the fixed gear 2 via any of the planetary gears 5 and 8. The wheels inertially rotate around the fixed gear 2.

In other words, with the drive wheel of this invention, even if the mainspring 3 becomes completely loose during driving, the fixed gear 2
Therefore, the vehicle can continue to run smoothly due to inertia without applying the brakes.

<Modifications> FIGS. 4, 5, 6, 7, 8, and 9 each show different modifications of the drive wheel incorporating the mainspring power device of the present invention. be. Note that the same components as those in the above embodiment are given the same reference numerals, and the description thereof will be omitted.

In the drive wheel of FIG. 4, the planet gear 9 is provided integrally with the planet gear 6 as an intermediate gear between the planet gears 6 and 8 in the drive wheel of FIG. A gear 19 is integrally provided with the planetary gear 8.

In the driving wheel of FIG. 5, the planetary gears 6 and 8 are directly meshed, whereas in the driving wheel of FIG. 1, the planetary gear 9 is an intermediate gear between the planetary gears 6 and 8. For this reason, the planetary gear 8 is a gear with a large tooth width like the planetary gear 7 so that it can mesh with the sun gear 4 as well.

In the drive wheel shown in FIG. 6, the planet gears 5 and 7 were directly meshed in the drive wheel shown in FIG. It is being

In the drive wheel shown in FIG. 7, the planet gears 5 and 7 are directly meshed with each other in the drive wheel shown in FIG. It is provided.

In the driving wheel shown in FIG. 8, the sun gear 4 was made up of one gear and the planetary gear 7 was directly meshed with the driving wheel shown in FIG.
and a small gear 4b are stacked together to form a large gear 4a.
A planetary gear 8 is meshed with the small gear 4b, and a planetary gear 7 is meshed with the small gear 4b.

In the driving wheel shown in FIG. 9, the fixed gear 2 is made up of one gear and the planetary gear 5 is directly meshed with the driving wheel shown in FIG.
and the large gear 2b are stacked together to form the small gear 2a.
A planetary gear 6 is meshed with the large gear 2b, and a planetary gear 5 is meshed with the large gear 2b.

In the drive wheel shown in FIG. 1, the planetary gears 5 and 7 are directly meshed with each other, but a planetary gear 21 is provided integrally with the planetary gear 5 as an intermediate gear between the planetary gears 5 and 7.

The modifications shown in FIGS. 6, 7, 8, and 9 have the effect of allowing more winding with a slight forced rotation when winding the mainspring, compared to the drive wheel shown in FIG. 1.

<Effects of the present invention> As explained above, in the driving wheel incorporating the mainspring power device of the present invention, the second planetary gear is connected to the first planetary gear.
The fourth planetary gear is biased by the second spring to maintain meshing with the first planetary gear, and the fourth planetary gear is biased by the second spring to maintain meshing with the first planetary gear.
Since it is biased to disengage from the planetary gear, the automatic selective switching mechanism between the second planetary gear and the fourth planetary gear becomes even more reliable.

[Brief explanation of the drawing]

Figures 1, 2, and 3 show an embodiment of a driving wheel incorporating the mainspring power unit of the present invention, and Figure 1 is a front view of the inside of the gear on the gear side from the side where it is attached to the vehicle body. , FIG. 2 is a front view seen from the side where it is attached to the vehicle body, and FIG. 3 is a sectional view taken along - in FIG. 1. Figure 4, Figure 5, Figure 6, Figure 7
8 and 9 are front views of the inside of the drive wheel incorporating the mainspring power device of the present invention, viewed from the side closer to the gear than the side to which it is attached to the vehicle body, respectively, of different modifications. 1... Wheel, 2, 2a, 2b... Fixed gear, 3... Mainspring, 4, 4a, 4b... Sun gear, 5... Second planetary gear, 6... Third planetary gear,
7...First planetary gear, 8...Fourth planetary gear, 9...
...Planetary gear, 10...First spring, 11...Second
Spring.

Claims (1)

[Claims] 1. A wheel formed with the required space to accommodate a mainspring and multiple gears,
A fixed gear located at the center of rotation within the wheel and having a protruding boss portion and fixed to the vehicle body so as to be rotatable relative to the wheel; a mainspring provided between the fixed gear and the mainspring in the wheel, a sun gear that is engaged with the inner end of the mainspring and is rotatable relative to the wheel and the fixed gear by the mainspring; a planetary gear that is supported and meshes with the sun gear; and a planetary gear that directly or indirectly meshes with the first planetary gear at a front end in the planetary rotation direction relative to the first planetary gear when the wheel is traveling and rotates, and that always meshes with the fixed gear and is used for winding the mainspring. a second planetary gear supported by the shaft with play so as to be disengaged from the first planetary gear when the wheel rotates; a third planetary gear supported by the wheel and meshed with the fixed gear; When the wheel rotates for winding the mainspring, the wheel directly or indirectly meshes with the third planetary gear on the front side in the planetary rotation direction compared to the third planetary gear, and always meshes with the sun gear, and when the wheel rotates while traveling, the third planetary gear The fourth planetary gear is supported with play on the shaft so that the meshing can be released, and the second planetary gear is kept in mesh with the first planetary gear by the first spring. A driving wheel incorporating a mainspring power device in which the fourth planetary gear is urged in a direction in which the fourth planetary gear is disengaged from the third planetary gear by a second spring.