KR101147117B1 - Transmission of human-driven traveling apparatus - Google Patents

Abstract

The present invention relates to a transmission device for a manual driving mechanism, and aims to be miniaturized and slimmed so that it can be installed in a small and narrow space.
In order to achieve the above object, the present invention provides a transmission device of a manual driving mechanism for shifting a driving force transmitted from a pedal device to a rear wheel, comprising: a transmission housing; An input shaft rotatably installed in the transmission housing to introduce a driving force of the pedal device; Drive gears having different teeth provided on the input shaft so as to be rotated integrally with the input shaft; A transmission shaft rotatably installed in the transmission housing so as to correspond to the input shaft; Shift gears rotatably installed on the shift shaft, the gears being different from each other in pairs with the drive gears of the input shaft and having different teeth to always receive the driving force of the drive gears; Integral means for allowing a portion of the outer circumferential surface of the transmission shaft to be integrated with any one of the plurality of transmission gears during the axial movement of the transmission shaft; Among the transmission gears, a shift control mechanism for axially moving the shift shaft to integrate the shift gear so that a driving force of one of the shift gears can be transmitted to the shift shaft; It is provided with a power transmission means for transmitting the rotational force of the transmission shaft to the rear wheel.

Description

Transmission of manual drive mechanism {TRANSMISSION OF HUMAN-DRIVEN TRAVELING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission of a manual traveling mechanism, and more particularly, to a transmission of a manual traveling mechanism that can be miniaturized and slimmed and can be installed in a small and narrow space.

Recently, a "manual driving mechanism" called "kickboard" has been variously developed. As an example, there is Korean Patent Application No. 10-2009-0054863 filed by the present applicant.

This technology includes a frame, a steering shaft installed at the front of the frame, a front wheel installed at the steering shaft, a handle provided at the upper end of the steering shaft to steer the front wheel, a rear wheel mounted at the frame, and a user. It includes a pedal device for driving the rear wheel with the power input from the foot.

In this manual driving mechanism, when the user presses the pedal device and inputs the power, the input power is transmitted to the rear wheel. The rear wheels, which are delivered with the responsiveness, drive the entire kickboard while rolling forward. At this time, if the user operates the handle in the left and right direction, the driving direction of the kickboard is switched.

On the other hand, such a manual traveling mechanism is provided with a transmission capable of adjusting the traveling speed and the driving torque. An example thereof is Korean Patent Registration No. 1065348, to which the applicant has applied for and registered.

This technology includes a transmission housing, an input shaft for introducing power of a pedal device, a sleeve that can be rotated integrally with the input shaft and move along the axial direction of the input shaft, and fixed to the outer peripheral surface of the sleeve at intervals. Drive gears of different sizes, shift shafts installed in parallel with the input shaft, shift gears of different sizes fixed at intervals on the outer circumferential surface of the shift shaft and paired with the drive gears, respectively, And a shift control mechanism for axially moving the sleeve so that any one pair of the drive gears and the shift gears constituting the gear can be selectively engaged, and a driven gear engaged with any one of the shift gears. It includes an output shaft that receives the rotational force of the shaft and outputs it to the rear wheel.

In this transmission, when the shift operation mechanism is operated, the sleeve moves, and when the sleeve moves, any one of a plurality of drive gears fixed to the sleeve is engaged with the transmission gear.

At this time, since the drive gear and the gear gear engaged with each other have different sizes and number of teeth, the rotation speed of the pedal device transmitted to the transmission gear via the drive gear is changed. As a result, the driving force of the pedal transmitted from the pedal device to the rear wheel is shifted. As a result, the traveling speed and drive torque of the manual drive mechanism are adjusted.

However, such a conventional transmission device has a disadvantage in that a space corresponding to a moving distance of the drive gear must be secured because the drive gear is directly engaged with the transmission gear while directly moving.

And because of these drawbacks, there is a problem that the transmission housing must be large, due to this problem there is a drawback that the overall size of the device. In particular, there is a problem that the transmission itself can not be installed in a narrow and narrow space due to this drawback.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and an object thereof is to provide a transmission apparatus of a manual traveling mechanism that can be miniaturized and slimmed.

Another object of the present invention is to provide a transmission apparatus of a manual traveling mechanism that can be freely installed regardless of the size of the installation space by configuring to be compact and slim.

Still another object of the present invention is to provide a transmission apparatus of a manual driving mechanism that can be freely installed regardless of the size of the installation space, thereby increasing user satisfaction and productability.

In the transmission of the manual driving mechanism according to the present invention for achieving the above object, the transmission of the manual driving mechanism for shifting the driving force transmitted from the pedal unit to the rear wheel, the transmission housing; An input shaft rotatably installed in the transmission housing to introduce a driving force of the pedal device; Drive gears having different teeth provided on the input shaft so as to be integrally rotated with the input shaft; A transmission shaft rotatably installed in the transmission housing so as to correspond to the input shaft; Shift gears rotatably installed on the shift shaft, and having gear teeth that are different from each other in pairs with the drive gears of the input shaft and are always transmitted to receive the driving force of the drive gears; Integral means for allowing a portion of an outer circumferential surface of the transmission shaft to be integrated with any one of the plurality of transmission gears during an axial movement of the transmission shaft; A shift operating mechanism configured to axially move the shift shaft to integrate the shift gear so that a driving force of one of the shift gears can be transmitted to the shift shaft, among the shift gears; It characterized in that it comprises a power transmission means for transmitting a rotational force of the transmission shaft to the rear wheel.
Preferably, the integration means, the coupling groove portion formed in the inner diameter portion of each of the transmission gear; It characterized in that it comprises a spline formed on a portion of the outer peripheral surface of the shift shaft to be engaged with the corresponding coupling groove while being aligned with any one of the transmission gear, the axial movement of the shift shaft.
And the power transmission means, a power transmission gear that is installed to be rotated integrally with the transmission shaft; An output shaft having a driven gear that is constantly engaged with the power transmission gear, and receiving a rotational force of the transmission shaft through the driven gear; It is installed to be integrally rotated with the output shaft, it is characterized in that it comprises an output sprocket connected to the rear wheel by a chain to transfer the rotational force of the output shaft to the rear wheel.
In some cases, the power transmission means is installed so as to rotate integrally with the transmission shaft, it is characterized in that the output sprocket is connected to the rear wheel by a chain to directly transfer the rotational force of the transmission shaft to the rear wheel.
And an auxiliary transmission means for shifting a driving force transmitted from the pedal device to the input shaft, the auxiliary transmission means comprising: a power transmission shaft for introducing a driving force of the pedal device; A plurality of auxiliary drive gears which are installed to rotate together with the power transmission shaft and have different teeth; The input shaft axially movable in the transmission housing; A plurality of auxiliary transmission gears which are rotatably installed on the input shaft and have a different tooth number in which they are always engaged in pairs with the auxiliary drive gears of the power transmission shaft to receive the driving force of the auxiliary drive gears at all times; Auxiliary integration means for allowing a portion of an outer circumferential surface of the input shaft to be integrated with any one of the plurality of auxiliary transmission gears during the axial movement of the input shaft; Among the auxiliary transmission gears, it characterized in that it comprises an auxiliary transmission operation mechanism for integrating any one auxiliary transmission gear by axially moving the input shaft so that the driving force of any one of the auxiliary transmission gears can be transmitted to the input shaft. .
Preferably, the auxiliary integration means, the coupling groove portion formed in the inner diameter of each of the auxiliary transmission gear; It characterized in that it comprises a spline formed on a portion of the outer peripheral surface of the input shaft so as to be engaged with the corresponding coupling groove portion while being aligned with any one of the auxiliary transmission gear, the axial movement of the input shaft.

Since the transmission device of the manual driving mechanism according to the present invention has a structure in which a shift operation can be performed only by moving the shift shaft without moving the gears, as in the related art, it is not necessary to secure a space by shifting the gears while moving. Therefore, there is an effect that can reduce the size of the transmission housing.

In addition, since the size of the transmission housing can be reduced, there is an effect that the overall size of the device can be reduced in size and slim.

In addition, since the size of the device can be reduced in size and slim, it can be installed freely regardless of the size of the installation space. Therefore, there is an effect that can improve the user's satisfaction and productability.

1 is a perspective view showing a first embodiment of a transmission for a manual traveling mechanism according to the present invention;
FIG. 2 is a plan sectional view of FIG. 1 showing the transmission of the first embodiment in detail; FIG.
3 is a cross-sectional view taken along line III-III of FIG. 2;
4 is a cross-sectional view showing an operation example of a transmission of the first embodiment, showing a state in which a medium speed is selected;
5 is a cross-sectional view showing an operation example of the transmission of the first embodiment, showing a state in which a high speed is selected;
6 is a cross-sectional view showing a second embodiment of a transmission for a manual traveling mechanism according to the present invention;
FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;
8 is a cross-sectional view showing an operation example of a transmission of the second embodiment, showing a state in which a medium speed is selected;
9 is a cross-sectional view showing an example of the operation of the transmission in the second embodiment, showing a state in which a high speed is selected;
10 is a perspective view showing a third embodiment of a transmission for a manual traveling mechanism according to the present invention;
FIG. 11 is a plan sectional view of FIG. 10 showing the transmission of the third embodiment in detail; FIG.
12 is a sectional view taken along the line XII-XII of FIG. 11;
FIG. 13 is a sectional view showing an operation example of a transmission of the third embodiment, showing a state in which a high speed is selected;
14 is a diagram showing a modification of the transmission of the third embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a transmission of a manual driving mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]

First, the transmission of the manual driving mechanism according to the present invention, as shown in Figures 1 to 3, is provided with a transmission (10).

The transmission 10 includes a transmission housing 12, which is fixedly installed to a manual driving mechanism (not shown). Here, the transmission housing 12 is hermetically sealed to prevent the inflow of foreign substances and pollutants.

On the other hand, the transmission housing 12 includes an internal transmission chamber 14, in which the input shaft 20 and the transmission shaft 30 are provided in parallel with each other.

The input shaft 20 is rotatably installed in the transmission housing 12, one end of which protrudes to the outer surface of the transmission housing 12. An input sprocket 20a is provided on the input shaft 20 protruding to the outer surface of the transmission housing 12.

The input sprocket 20a is connected by a pedal device (not shown) of the manual driving mechanism and the chain 20b. The input sprocket 20a thus connected introduces power to the pedal device and inputs the introduced power into the input shaft. Enter in (20).

On the other hand, a plurality of drive gears 22 are integrally installed on the outer surface of the input shaft 20. The plurality of drive gears 22 is composed of three, wherein the three drive gears 22 have different diameters and different teeth and are integrally rotated together with the input shaft 20.

Preferably, the three drive gears 22 installed on the input shaft 20 are preferably installed sequentially according to the size and number of teeth.

Hereinafter, the drive gear 22 having the smallest diameter and the smallest number of teeth will be referred to as " single stage drive gear 22a ", and the drive gear 22 having the middle diameter and the middle tooth " The drive gear 22b "will be referred to, and the drive gear 22 having the largest diameter and the largest number of teeth will be referred to as the" three stage drive gear 22c. "

On the other hand, the transmission shaft 30 is rotatably installed in the transmission housing 12, the transmission gears of different diameters are provided around the outer surface.

Each transmission gear 32 is rotatably installed on the transmission shaft 30, and is configured to be engaged with each other in pairs with the drive gears 22 of the input shaft 20 in a one-to-one relationship.

Here, each of the transmission gears 32 is configured to always be in engagement with the pair of drive gears 22, which are in a state in which there is no gap between the transmission gears 32, and both transmission gears 32 ) Are possible because they are in close contact with both side walls 12a of the transmission housing 12, respectively.

According to the transmission gears 32 having such a structure, since the gears can be constantly engaged with the driving gears 22 without flowing in the transmission housing 12, the rotational force of the driving gears 22 is transmitted. Receive all rotational movement. In particular, all the rotational movement about the transmission shaft (30).

Here, among the transmission gears 32, the transmission gear 32 (hereinafter, referred to as “single-speed gear 32a”) having the largest diameter and the largest number of teeth is provided on the input shaft 20. It is preferable to pair with the first stage drive gear 22a having the smallest diameter and the smallest number of teeth among the drive gears 22.

This is to reduce the rotational speed of the first stage drive gear 22a having the smallest number of teeth, thereby shifting the pedaling force of the pedal device input to the input shaft 20 at a low speed.

In addition, among the three transmission gears 32, a transmission gear 32 (hereinafter referred to as "two-speed gear 32b") having a middle diameter and a number of teeth is a drive provided in the input shaft 20. The gear 22 is preferably paired with a two-stage drive gear 22b having an intermediate diameter and an intermediate tooth number.

This is to change the rotational speed of the two-stage drive gear 22b having the intermediate teeth to the medium speed, whereby the pedal force of the pedal device input to the input shaft 20 can be shifted to the medium speed.

In addition, among the three transmission gears 32, the transmission gear 32 (hereinafter, referred to as "three-speed gear 32c") having the smallest diameter and the smallest teeth number is attached to the input shaft 20. It is good to make a pair with the 3rd drive gear 22c which has the largest diameter and the most tooth number among the installed drive gear 22. As shown in FIG.

This is to increase the rotational speed of the three-stage drive gear 22c having the largest number of teeth, whereby the pedal force of the pedal device input to the input shaft 20 can be shifted at high speed.

Again, referring to FIGS. 1 to 3, the transmission shaft 30 is installed in the transmission housing 12 so as to rotate in the axial direction. In particular, it moves to the "first stage position" (A), the "two stage position" (B), and the "three stage position" (C) along an axial direction.

Moreover, the transmission shaft 30 further has the spline part 34 formed in the outer peripheral surface. The spline part 34 is formed in the specific part of the outer peripheral surface of the transmission shaft 30, and the spline part 34 formed in this way is "one step position" A and "two steps with the transmission axis 30. As shown in FIG. Move to position "(B) and" third position "(C).

On the other hand, each of the transmission gears 32 provided around the transmission shaft 30 has a coupling groove 36 to which the spline portion 34 of the transmission shaft 30 can be coupled.

Coupling groove 36 is formed in the inner diameter portion of the transmission gear 32, the shift shaft moved to the "single position" (A) or "stage 2" (B) or "stage 3" (C) It is configured to selectively engage with the spline portion 34 of the (30).

In particular, the engaging groove portion 36 of the first gear shifting gear 32a is coupled to the spline portion 34 of the transmission shaft 30 moved to the " first gear position " (A), as shown in FIG. It is composed. Therefore, the stepping force of the pedal device shifted at a low speed while passing through the first stage drive gear 22a and the first stage gear 32a can be transmitted to the transmission shaft 30.

In addition, the engaging groove portion 36 of the two-speed gear 32b, as shown in Figure 4, to be coupled to the spline portion 34 of the transmission shaft 30 moved to the "two-stage position" (B). It is composed. Therefore, it is possible to transmit the stepping force of the pedal device shifted to the medium speed while passing through the second stage drive gear 22b and the second stage gear 32b.

In addition, the engaging groove portion 36 of the three-speed gear 32c, as shown in Figure 5, to be coupled to the spline portion 34 of the transmission shaft 30 moved to the "three-speed position" (C). It is composed. Therefore, the pedaling force of the pedal device shifted at high speed while passing through the three-speed drive gear 22c and the three-speed gear 32c can be transmitted to the transmission shaft 30.

2 and 3, a power transmission gear 38 is further installed on the transmission shaft 30.

The power transmission gear 38 is coupled by the transmission shaft 30 and a key 38a. The key transmission gear transmission 38 is rotated integrally with the transmission shaft 30, The axial movement of the transmission shaft 30 is configured to allow.

Here, the key 38a is formed integrally with the power transmission gear 38. The key groove 38b of the shift shaft 30 to which the key 38a is coupled is formed long along the longitudinal direction of the shift shaft 30. Thus, it is configured to allow axial movement of the transmission shaft 30 relative to the power transmission gear 38.

According to the power transmission gear 38 of this configuration, while rotating integrally with the transmission shaft 30 serves to transmit the rotational force of the transmission shaft 30 to the output shaft 40 to be described later.

In particular, it serves to transmit the rotational force of the transmission shaft 30 shifted by the specific drive gear 22 and the transmission gear 32 pair to the output shaft 40 (see Fig. 2) to be described later.

On the other hand, the output shaft 40 is rotatably installed in the transmission housing 12, and a single driven gear 42 is integrally provided around the outer surface thereof.

The single driven gear 42 is configured to be constantly engaged with the power transmission gear 38 provided on the transmission shaft 30.

The driven gear 42 thus configured receives the rotational force of the transmission shaft 30. In particular, while the driving gears 22 of the input shaft 20 and the transmission gears 32 of the transmission shaft 30 are received, the pedaling force of the shifted pedal device is received, and the pedaling force of the received pedal device is transmitted to the output shaft 40. To pass.

One end of the output shaft 40 protrudes to the outer surface of the transmission housing 12. At this time, the output sprocket 44 is provided on the output shaft 40 protruding to the outer surface of the transmission housing 12. The output sprocket 44 is connected by the rear wheel (not shown) of the manual drive mechanism and the chain 46.

The output sprocket 44 connected to the rear wheel of the manual driving mechanism transmits the pedaling force of the pedal device transmitted to the output shaft 40 to the rear wheel. In particular, while passing through the input shaft 20 and the transmission shaft 30 transmits the pedaling force of the pedal device properly shifted to the rear wheel. Therefore, it is possible to drive the manual driving mechanism while the rear wheel is driven at an appropriate rotational force.

Again, referring to FIGS. 1 and 3, in the transmission apparatus of the present invention, the speed change shaft 30 of the transmission 10 has the " first step position " (A), " second step position " And a shift operation mechanism 50 for selecting any one of the positions " C ".

The shift operation mechanism 50 includes a shift lever 52 rotatably installed on a handle (not shown) of the manual driving mechanism, a shift cable 54 that is pulled or pushed along with the rotation of the shift lever 52; , While the linear movement by the transmission cable 54 to be pulled or pushed, the transmission shaft 30 of the transmission 10 is moved to the "single position" (A), "stage 2" (B) and "stage 3". And a shift arm 56 which pushes to (C).

The shift lever 52 is rotated in multiple stages according to the driver's operation, as shown in FIG. In particular, the motor rotates to the "single rotation position" (X) for the 1st gear shift, the "stage rotational position" (Y) for the 2nd gear shift, and the "stage rotation position" (Z) for the 3rd gear shift. do.

The shifting cable 54 is pulled or pushed in accordance with the rotational movement of the shifting lever 52. The shifting cable 54 thus moves linearly shifts the shift arm 56 connected to the distal end.

The shift arm 56 is supported at both ends of the shift shaft 30 at both ends, respectively, and one side thereof is connected to the shift cable 54. The shift arms 56 connected in this way push the shift shaft 30 while linearly moving according to the pulling or pushing of the shift cable 54.

In particular, the transmission shaft 30 is pushed to any one of the "first stage position" (A), the "second stage position" (B) and the "three stage position" (C). Therefore, the transmission shaft 30 can be selected to any one of the "first stage position" (A), the "second stage position" (B), and the "three stage position" (C).

In this way, the transmission shaft 30 can be integrally connected to any one selected from the first gear shifting gear 32a, the second gear shifting gear 32b and the three gear shifting gear 32c.

As a result, the first stage drive gear 22a and the first stage gear 32a pair, the second stage drive gear 22b and the second stage gear 32b pair, the third stage drive gear 22c and the third stage gear ( 32c) Among the pairs, the pedaling force of the pedal device shifted by any one of the selected pairs can be transmitted to the shift shaft 30.

Accordingly, the pedaling force of the pedal device introduced into the input shaft 20 can be transmitted to the rear wheel of the manual driving mechanism while being shifted at low speed, medium speed, or high speed through the pair of the drive gear 22 and the transmission gear 32.

On the other hand, the shift operation mechanism 50, as shown in Fig. 3, the shift shaft 30 is " first step position " (A) and " second step position " (B) and " three step position " In the case of moving to, it includes a detent device 60 that makes the operation feeling different from other positions.

The detent device 60 includes an operation groove 62 formed in the shift arm 56, a ball 64 that is projected into the operation groove 62, and a transmission housing 12 so that the ball 64 can be caught. It includes a plurality of engaging grooves (66) formed in the.

The operation groove 62 is formed in the bottom portion of the shift arm 56.

The ball 64 is elastically supported by the spring 64a installed in the operation groove 62 and is configured to protrude toward the locking groove 66 side of the transmission housing 12.

This ball 64 moves integrally when the shift arm 56 linearly moves. In particular, the shift arm 56 moves the shift shaft 30 to the " stage 1 " (A), " stage 2 " (B) and " stage 3 " (C). ) To work together.

The catching grooves 66 are formed on the outer circumferential surface of the transmission housing 12, and the catching grooves 66 thus formed can catch the ball 64 installed on the shift arm 56. In particular, with the shift arm 56, the ball 64 moved to any one of the " stage 1 " (A), " stage 2 " (B) and " stage 3 " To be able.

Therefore, the movement of the shift arm 56 moved to any one position among the "first stage position" (A), the "second stage position" (B), and the "three stage position" (C) is temporarily limited. This differentiates the operation feeling of the transmission shaft 30 shifted to any one of the "first stage position" (A), the "second stage position" (B) and the "three stage position" (C) from the other positions. .

As a result, the user is informed whether the transmission is " single speed shift " or " single speed shifting " or " three speed shifting ".

On the other hand, the shift arm 56 is configured to be elastically supported in either direction by the spring 56a. Preferably, it is configured to be elastically supported in the " one step position " (A) direction.

Next, an operation example of the present invention having such a configuration will be described with reference to FIGS. 1 to 5.

First, the case where the transmission of the present invention is selected at low speed will be described. 1 to 3, the driver rotates the shift lever 52 to a low speed "single rotation position" (X).

Then, the shift cable 54 connected to the shift lever 52 is pulled to linearly move the shift arm 56 of the transmission 10 in the " first step position " (A) direction. As a result, the shift shaft 30 connected to the shift arm 56 also moves to the " first step position " (A).

On the other hand, when the transmission shaft 30 moves to the "single position" (A), the spline portion 34 of the transmission shaft 30 and the coupling groove portion 36 of the first transmission gear 32a are engaged. As a result, the transmission shaft 30 and the first speed gear 32a are integrated into one body.

Then, the driving force of the pedal device shifted at low speed by the first stage drive gear 22a and the first stage gear 32a is transmitted to the transmission shaft 30, and the low speed driving force transmitted to the transmission shaft 30 is again. It is transmitted to the output shaft 40 through the power transmission gear 38 and the driven gear 42.

And the low speed driving force transmitted to the output shaft 40 is transmitted to the rear wheel to drive the manual driving mechanism at low speed.

Next, the case where the transmission is selected as the medium speed will be described. 1, 3, and 4, the driver rotates the shift lever 52 to the "two-stage rotational position" (Y) of the medium speed.

Then, the shift cable 54 connected to the shift lever 52 is pulled to linearly move the shift arm 56 of the transmission 10 in the " two-stage position " (B) direction. As a result, the shift shaft 30 connected to the shift arm 56 also moves to the " two-stage position " (B).

On the other hand, when the transmission shaft 30 moves to the "two-stage position" (B), the spline portion 34 and the coupling groove portion 36 of the two-speed gear 32b of the transmission shaft 30 is engaged. As a result, the transmission shaft 30 and the two-speed gear 32b are integrated into one body.

Then, the driving force of the pedal device shifted to the medium speed by the second stage gear 22b and the second stage gear 32b is transmitted to the transmission shaft 30, and the driving force of the medium speed transmitted to the transmission shaft 30 is again. It is transmitted to the output shaft 40 through the power transmission gear 38 and the driven gear 42.

And the driving force of the medium speed transmitted to the output shaft 40 is transmitted to the rear wheel to drive the manual driving mechanism at medium speed.

Next, a case of selecting the transmission of the present invention at high speed will be described. 1, 3, and 5, the driver rotates the shift lever 52 provided in the handle 30 to a low speed "three-stage rotation position" (Z).

Then, the shift cable 54 connected to the shift lever 52 is pulled to linearly move the shift arm 56 of the transmission 10 in the " three-step position " (C) direction. As a result, the shift shaft 30 connected to the shift arm 56 also moves to the "three-step position" (C).

On the other hand, when the transmission shaft 30 moves to the "three-stage position" (C), the spline portion 34 and the coupling groove portion 36 of the three-speed gear 32c of the transmission shaft 30 is engaged. As a result, the transmission shaft 30 and the three-speed transmission gear 32c are integrated into one body.

Then, the driving force of the pedal device shifted at high speed by the three-speed drive gear 22c and the three-speed gear 32c is transmitted to the transmission shaft 30, and the high speed driving force transmitted to the transmission shaft 30 is again. It is transmitted to the output shaft 40 through the power transmission gear 38 and the driven gear 42.

And the high speed driving force transmitted to the output shaft 40 is transmitted to the rear wheel to drive the manual driving mechanism at high speed.

According to the transmission of the present invention having the configuration as described above, since the shift operation is possible only by the movement of the shift shaft 30 without the movement of the gears 22 and 32, as in the prior art, the gears are shifted while moving There is no need to secure space. Therefore, the size of the transmission housing 12 can be reduced. As a result, the overall size of the apparatus can be reduced in size and slim.

In addition, since the size of the device can be reduced in size and slim, it can be installed freely regardless of the size of the installation space. Therefore, user satisfaction and product quality can be improved.

Second Embodiment

6 to 9 are views showing a second embodiment of the speed change apparatus according to the present invention.

Unlike the first embodiment, the transmission of the second embodiment has no output shaft and has a structure in which the transmission shaft 30 simultaneously performs the role of the output shaft.

Therefore, an output sprocket 44 is integrally installed at one end of the transmission shaft 30, and the output sprocket 44 is connected to the rear wheel (not shown) of the manual driving mechanism by the chain 46.

As a result, the driving force of the pedal device transmitted to the transmission shaft 30 is directly transmitted from the transmission shaft 30 to the rear wheel of the manual driving mechanism.

As a result, the driving force of the pedal device shifted by the drive gear 22 and the shift gear 32 pairs is transmitted directly to the rear wheel of the manual drive mechanism via the shift shaft 30.

On the other hand, the transmission of this second embodiment does not have only an output shaft, and other configurations are the same as in the above-described first embodiment.

Thus, as shown in Figs. 6 to 9, by operating the shift operation mechanism 50, the shift shaft 30 is moved to the " first step position " (A) and " two step positions " (B) and " 3 " Moving to any one position of the unit value "C", the transmission gear 32 and the transmission shaft 30 at the corresponding position are integrated, whereby the transmission gear 32 and the drive gear 22 are paired. Only the driving force of the pedal system shifted by the transmission is transmitted to the rear wheel.

According to the transmission of the second embodiment having such a configuration, since the structure has no output shaft, the structure of the apparatus is simple and the number of parts is reduced. Therefore, there is little possibility of failure and an effect of cost reduction can be expected.

Third Embodiment

Next, FIGS. 10 to 13 are views showing a third embodiment of the transmission according to the present invention.

10 to 12, the transmission further includes a structure further comprising an auxiliary transmission 70 provided between the pedal device of the manual driving mechanism and the input shaft 20 of the transmission 10. Have

The auxiliary transmission 70 includes a power transmission shaft 80 connected to the pedal device and a plurality of auxiliary drive gears 82 provided on the power transmission shaft 80.

The power transmission shaft 80 is operatively connected with the pedal device, and the power transmission shaft 80 thus connected rotates in response to the driving force of the pedal device.

The auxiliary drive gears 82 are composed of two, wherein the two auxiliary drive gears 82 have different diameters and different teeth, and are integrally rotated together with the power transmission shaft 80.

Hereinafter, the auxiliary drive gear 82 having a small diameter and a small number of teeth will be referred to as "one-stage auxiliary drive gear 82a", and the auxiliary drive gear 82 having a large diameter and a large number of teeth is "2". However, it will be referred to as an auxiliary drive gear 82b.

Here, it is preferable that the auxiliary drive gears 82 have a sprocket structure. This is to use the sprocket installed in the existing pedal device, without installing a separate gear.

Meanwhile, the auxiliary transmission 70 includes a plurality of auxiliary transmission gears 84 installed on the input shaft 20 of the transmission 10.

The auxiliary transmission gears 84 have different diameters and teeth, and are rotatably installed on the outer circumferential surface of the input shaft 20 protruding outward of the transmission housing 12.

The auxiliary transmission gears 84 installed in this way are configured to be engaged with each other in pairs with the auxiliary drive gears 82 of the power transmission shaft 80.

Here, each of the auxiliary transmission gears 84 is configured to always be engaged with the pair of auxiliary drive gears 82, which are both auxiliary transmissions, with no gap between the auxiliary transmission gears 84. Each of the fish 84 is possible because the structure is in close contact with both of the support plates (85).

According to the auxiliary transmission gears 84 of this structure, since the state can always be in engagement with the auxiliary drive gears 82 without flowing laterally, the rotational force of the corresponding auxiliary drive gears 82 is received. All will rotate. In particular, all the rotational movement with respect to the input shaft (20).

Here, among the auxiliary transmission gears 84, the auxiliary transmission gear 84 (hereinafter referred to as "single-stage auxiliary transmission gear 84a") having a large diameter and a large number of teeth is a power transmission shaft 80. Among the auxiliary drive gears 82 installed in the), it is good to be paired with the first stage auxiliary drive gear 82a having a small diameter and a small number of teeth.

This is to reduce the rotational speed of the first stage auxiliary drive gear 82a having a small number of teeth, whereby the pedal force of the pedal device input to the power transmission shaft 80 can be shifted at a low speed.

In addition, of the two auxiliary transmission gears 84, the transmission gear 84 (hereinafter referred to as "two-stage auxiliary transmission gear 84b") having a small diameter and a small number of teeth is a power transmission shaft 80. Among the auxiliary drive gears 82 installed in the), it is good to pair with the second stage auxiliary drive gear 82b having a large diameter and a large number of teeth.

This is to increase the rotational speed of the two-stage auxiliary drive gear 82b having a large number of teeth, thereby shifting the pedaling force of the pedal device input to the power transmission shaft 80 at high speed.

On the other hand, the auxiliary transmission gear 84 is preferably composed of a pin (Pin) gear. Therefore, it is configured to be able to be engaged with the auxiliary drive gear 82 of the sprocket form.

Again, referring to FIGS. 10 to 12, the input shaft 20 of the transmission 10 is installed in the transmission housing 12 in such a manner as to rotate in the axial direction. In particular, it moves to the "secondary 1st position" D and the "secondary 2nd position" E along the axial direction.

In addition, the input shaft 20 further includes a spline portion 90 formed on the outer circumferential surface. The spline portion 90 is formed on a specific portion of the outer circumferential surface of the input shaft 20, and the spline portion 90 thus formed, together with the input shaft 20, is "secondary first position" D and "secondary second stage". Position "(E).

On the other hand, each auxiliary transmission gear 84 provided around the input shaft 20 has a coupling groove 92 to which the spline portion 90 of the input shaft 20 can be coupled.

The engaging groove 92 of the auxiliary transmission gears 84 is selectively engaged with the spline portion 90 of the input shaft 20 moved to the "secondary first position" (D) and the "secondary second position" (E). It is configured to be.

In particular, the engaging groove 92 of the first-stage auxiliary transmission gear 84a is engaged with the spline portion 90 of the input shaft 20 moved to the "secondary first-stage position" (D), as shown in FIG. It is configured to be. Therefore, the stepping force of the pedal device shifted at a low speed while passing through the first-stage auxiliary drive gear 82a and the first-stage auxiliary transmission gear 84a can be transmitted to the input shaft 20.

In addition, the engaging groove 92 of the two-stage auxiliary transmission gear 84b is engaged with the spline portion 90 of the input shaft 20 moved to the "secondary two-stage position" E, as shown in FIG. It is configured to be. Therefore, it is possible to transmit the stepping force of the pedal device shifted at high speed to the input shaft 20 while passing through the two-stage auxiliary drive gear 82b and the two-stage auxiliary transmission gear 84b.

Again, referring to FIGS. 10 to 12, in the transmission of the second embodiment, the input shaft 20 of the transmission 10 has either the "secondary first position" D or the "secondary second position" E. It is further provided with an auxiliary shift control mechanism 100 for selecting one.

The auxiliary shift control mechanism 100 has the same structure as the shift control mechanism 50 described above, and is adapted to the rotation of the shift lever 102 and the shift lever 102 that are rotatably installed on the handle of the manual travel mechanism. The input shaft 20 of the transmission 10 is moved to the "secondary first position" (D) and the "secondary 2" while linearly moving by the shifting cable 104 to be pulled or pushed along and the shifting cable 104 to be pulled or pushed. And a shift arm 106 for pushing the unit value "E.

The shift lever 102 is rotated in multiple stages according to the driver's operation, as shown in FIG. In particular, it is rotated to the "auxiliary one-stage rotational position" V for the auxiliary one-speed shift, and the "auxiliary two-stage rotational position" W for the auxiliary two-speed shift.

The shifting cable 104 is pulled or pushed according to the rotational movement of the shifting lever 102, and the shifting cable 104 thus moves linearly shifts the shift arm 106 connected to the end thereof.

Each of the shift arms 106 is supported at both ends of the input shaft 20, respectively, and one side thereof is connected to the shifting cable 104. The shift arm 106 connected in this way pushes the input shaft 20 while linearly moving according to the pulling or pushing of the transmission cable 104.

In particular, the input shaft 20 is pushed to any one of the "secondary first position" (D) and the "secondary second position" (E). Thus, the input shaft 20 can be selected to any one of the "secondary first position" (D) and the "secondary second position" (E).

As a result, the input shaft 20 can be integrally connected to any one selected from the first-stage auxiliary transmission gear 84a and the second-stage auxiliary transmission gear 84a.

As a result, among the pair of the first-stage auxiliary drive gear 82a and the pair of the first-stage auxiliary transmission gear 84a, the pair of the second-stage auxiliary drive gear 82b and the two-stage auxiliary transmission gear 84b, shifted by any one pair selected The pedal force of the pedal device can be transmitted to the input shaft (20).

Accordingly, the pedaling force of the pedal device introduced into the power transmission shaft 80 can be input to the transmission 10 while being shifted at a low speed or a high speed through the pair of the auxiliary drive gear 82 and the auxiliary transmission gear 84. .

On the other hand, when the auxiliary shift operation mechanism 100 moves the input shaft 20 to the "secondary first position" D and the "secondary second position" E as shown in FIG. Compared with the detent device 110 to the operation feeling different.

The detent device 110 has the same structure as that of the detent device 60 described above, and includes an actuating groove 112 formed in the shift arm 56, a ball 114 that enters into the actuating groove 112, and , The ball 114 includes a plurality of engaging grooves 116 formed in the transmission housing 12 to be hooked.

Since the detent device 110 moves the input shaft 20 to the "secondary first position" (D) and the "secondary second position" (E), the user feels different in operation than other positions, so that the user Tells the transmission whether it is "secondary gearshift" or "secondary gearshift".

According to the transmission of the third embodiment having such a configuration, since the auxiliary transmission 70 is further provided between the pedal device and the transmission 10, the speed of the driving force transmitted from the pedal device to the rear wheel is further refined. Can be adjusted.

In particular, "three shifts" of the transmission 10 is added to "two shifts" of the auxiliary transmission 70 to enable a total of "five shifts." Therefore, it is possible to more precisely control the speed change stage of the driving force transmitted from the pedal device to the rear wheel.

As a result, the running speed and the driving torque of the manual driving mechanism can be adjusted more precisely. As a result, the running ability of the manual driving mechanism and the climbing ability of the ramp can be further improved.

Next, FIG. 14 is a view showing a modification of the transmission of the third embodiment.

In the transmission of the modification, the auxiliary drive gear 82 and the auxiliary transmission gears 84 of the auxiliary transmission 70 are composed of a sprocket structure, and the auxiliary drive gear 82 and the auxiliary transmission gear 84 of these sprocket structures are constructed. Are configured to be connected to each other by a chain 86.

On the contrary, the transmission shaft 30 and the rear wheel of the transmission 10 are configured to be connected to each other through the pin gear 120 and the sprocket 122. At this time, the pin shaft 120 is installed on the transmission shaft 30, the sprocket 122 is configured to be installed on the shaft 121 of the rear wheel.

The reason for this configuration is that when the transmission device of the present invention is installed adjacent to the pedal device, as shown in FIG. 11, if only the auxiliary transmission gear 84 of the auxiliary transmission 70 is replaced with a pin gear, the sprockets of the pedal device are replaced. This is because the auxiliary drive gear 82 can be used as it is.

On the contrary, in the case where the transmission device of the present invention is installed adjacent to the rear wheel, as shown in FIG. 14, if only the pin gear 120 is installed on the transmission shaft 30 of the transmission 10, the gear is installed on the shaft 121 of the rear wheel. This is because the sprocket 122 can be used as it is.

Therefore, the transmission of the present invention can be employed in the manual driving mechanism without replacing many parts, thereby enabling the effect of cost reduction.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. For example, as long as the configuration of the present invention is a device capable of running manually, any one can be applied. For example, it can be applied to a bicycle or the like.

10: transmission 12: transmission housing
14: transmission chamber 20: input shaft
22: Drive Gear 22a: 1st Drive Gear
22b: Two-speed Drive Gear 22c: Three-speed Drive Gear
30: shifting shaft 32: shifting gear
32a: 1st gearbox 32b: 2nd gearbox
32c: 3-speed gearbox 34: Spline part
36: coupling groove 38: power transmission gear
38a: Key 38b: Keyway
40: output shaft 42: driven gear
44: Sprocket 46: Chain
50: shift operating mechanism 52: shift lever
54: Cable Shift 56: Shift Arm
60: detent device 62: working groove
64: ball 66: locking groove
70: auxiliary transmission 80: power transmission shaft
82: auxiliary drive gear 82a: 1st auxiliary drive gear
82b: two-stage auxiliary drive gear 84: auxiliary transmission gear
84a: 1st Auxiliary Gearbox 84b: 2nd Auxiliary Gearbox
90: spline portion 92: coupling groove portion
100: auxiliary shift control mechanism 102: shift lever
104: shifting cable (Cable) 106: shift arm
110: detent device 112: operating groove
114: ball 116: locking groove

Claims (13)

delete delete delete A transmission housing 12;
An input shaft 20 rotatably installed in the transmission housing 12 to introduce a driving force of a pedal device;
Drive gears 22 having different teeth provided on the input shaft 20 so as to be integrally rotated with the input shaft 20;
A transmission shaft 30 rotatably installed in the transmission housing 12 so as to correspond to the input shaft 20;
Different teeth are installed on the transmission shaft 30 so as to be rotatable, and are always engaged in pairs with the drive gears 22 of the input shaft 20 to receive the driving force of the drive gears 22 at all times. Transmission gears having a;
Integral means for allowing a portion of the outer circumferential surface of the transmission shaft (30) to be integrated with any one of the plurality of transmission gears (32) during the axial movement of the transmission shaft (30);
Among the transmission gears 32, any one transmission gear 32 by axially moving the transmission shaft 30 so that the driving force of any one transmission gear 32 can be transmitted to the transmission shaft 30. Shift operation mechanism (50) to be integrated with;
In the transmission of the manual driving mechanism is configured to include a power transmission means for transmitting the rotational force of the transmission shaft 30 to the rear wheel, the driving force transmitted from the pedal device to the rear wheel,
The integration means,
Coupling grooves 36 formed on inner diameters of the transmission gears 32;
The shifting shaft 30 may be coupled to the corresponding coupling groove 36 while being aligned with one of the shifting gears 32 among the shifting gears 32 during the axial movement of the shifting shaft 30. Transmission device of a manual running mechanism comprising a spline portion (34) formed on a portion of the outer peripheral surface. The method of claim 4, wherein
The shift operation mechanism 50,
A shift lever 52 installed on a handle portion of the manual driving mechanism;
A shift cable 54 that is pulled or pushed according to the rotation of the shift lever 52;
And a shift arm (56) for pushing the shift shaft (30) in an axial direction while linearly moving by the shift cable (54) being pulled or pushed. 6. The method of claim 5,
When the transmission shaft 30 is integrated with any one transmission gear 32 while moving in the axial direction, the detent device further comprises a detent device 60 for different operation feeling compared to other unintegrated positions Transmission mechanism. The method according to claim 6,
The detent device 60,
A ball 64 inserted into the operation groove 62 formed in the shift arm 56;
The shift arm 56 is formed in the transmission housing 12 so as to correspond to a position at which the transmission shaft 30 and the transmission gear 32 are integrated, and the shift arm 56 axially moves the transmission shaft 30. And a plurality of locking grooves 66 into which the ball 64 of the shift arm 56 can be fitted to be engaged with any one transmission gear 32. Device. delete delete The method according to any one of claims 4 to 7,
And an auxiliary transmission means for shifting a driving force transmitted from the pedal device to the input shaft 20; The auxiliary transmission means,
A power transmission shaft 80 for introducing a driving force of the pedal device;
A plurality of auxiliary drive gears 82 installed to rotate integrally with the power transmission shaft 80 and having different teeth;
An input shaft (20) axially movable in the transmission housing (12);
It is installed on the input shaft 20 so as to be rotatable, and are always engaged in pairs with the auxiliary drive gears 82 of the power transmission shaft 80 to receive the driving force of the auxiliary drive gears 82 at all times. A plurality of auxiliary transmission gears 84 having different teeth;
Auxiliary integration means for allowing a portion of the outer circumferential surface of the input shaft 20 to be integrated with any one of the plurality of auxiliary transmission gears 84 during the axial movement of the input shaft 20;
Among the auxiliary transmission gears 84, one of the auxiliary transmission gears axially moves the input shaft 20 so that the driving force of any of the auxiliary transmission gears 84 can be transmitted to the input shaft 20. 84) an auxiliary shift control mechanism (100) integrated with the manual drive mechanism. delete The method of claim 10,
The auxiliary integration means,
Coupling grooves 92 formed on inner diameters of the auxiliary transmission gears 84;
The input shaft 20 to be coupled to the coupling groove 92 while being aligned with any one of the auxiliary transmission gear 84 of the auxiliary transmission gear 84 during the axial movement of the input shaft 20, Transmission device of a manual driving mechanism, characterized in that it comprises a spline portion 90 formed on a portion of the outer peripheral surface. The method of claim 10,
The auxiliary shift operation mechanism 100,
A shift lever 102 installed on a handle part of the manual driving mechanism;
A shift cable 104 that is pulled or pushed according to the rotation of the shift lever 102;
A shift arm 106 for moving the input shaft 20 in an axial direction while linearly moving by the shifting cable 104 being pulled or pushed, and
When the input shaft 20 is integrated with any one auxiliary transmission gear 84 while moving in the axial direction, manual driving, characterized in that it comprises a detent device (110) for different operation feeling compared to other unintegrated positions Transmission of the mechanism.

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