KR101488507B1 - Hub Drive Mechanism - Google Patents

Abstract

The present invention provides a hub drive apparatus having a motor, a transmission, and a drive means inside a hub in which various rotating bodies are installed, and supporting all the shafts by the same support body. By using such a hub drive device, it is possible to design a power device that is compact and has reduced vibration and noise.

Description

[0001] HUB DRIVE METHOD [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hub to which a rotating body such as a cam, a gear, a pump, a screw, a winch, a wheel and the like is attached, and more particularly to a hub driving apparatus for driving a hub through a motor and a speed- .

BACKGROUND ART [0002] Generally, a rotating body such as a cam, a gear, a pump, a screw, a wheel or the like is provided with a rotating shaft serving as a center of rotation, and the rotating body is connected to a rotating shaft through a hub. A motor (or an engine) and a transmission (hereinafter referred to as a power unit) are connected to the rotary shaft or hub of the rotating body in order to transmit power to the rotating body. Generally, the power unit is provided outside the rotating body. When the output shaft of the power unit and the rotating shaft of the rotating body are coaxial, they are coupled by a coupling or a clutch. When they are parallel, they are connected by a gear or a chain.

 Since the power unit is installed outside the rotating body, a space for installing the power unit is separately required. Also, there is a miss-alignment problem between the output shaft of the power unit and the rotating shaft of the rotating body, It also causes noise and vibration.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a power unit for driving a rotating body inside a hub of a rotating body so that a separate space for installing a power unit is not required, In order to solve the problem of misalignment of the shaft.

As a means for solving the above-mentioned problems, an embodiment of the present invention provides a hub driving apparatus. In some embodiments, the hub of the hub drive apparatus includes a motor, a transmission, and a drive means for driving the hub.

The motor may be a power source for driving the hub, for example, an electric or an ultrasonic wave. The transmission may be provided with a speed change device that converts the rotational speed and torque of the motor to the rotational speed and torque required by the rotational body. In some cases, the transmission may be omitted and a motor may be directly connected to the driving means to drive the hub and the rotating body.

The driving means may include a driving gear, an idler gear and a driven gear for transmitting the power of the transmission (the motor if the transmission is omitted) to the hub of the rotating body. The drive gear is coupled to the output shaft (or motor shaft) of the transmission, and the driven gear is connected to the hub. The idler gear transmits power between the driving gear and the driven gear. In some cases, the idler gear may be omitted and the drive gear may directly drive the driven gear.

The driving means may be provided in the form of a planetary gear. In this case, the driving gear is a sun gear, the idler gear is a pinion gear, the driven gear is a ring gear, gear function.

A plurality of idler gears and pinion gears may be used as needed.

The driven gear of the driving means is connected to a hub to which the rotating body is attached, so that the power of the motor is transmitted to the hub through the transmission and the driving means. The hub may be variously attached to a rotating body that requires power, such as various cams, gears, chain sprockets, pulleys, pumps, screws, fans, winches, In some cases, a plurality of different types of rotating bodies may be provided on the hub.

The motor and the transmission are coupled to each other or integrally formed and fixed and supported by a first support and a second support. Also, the driving means may be provided on the first support or the second support so as to be connected to the transmission or the motor.

An idler gear shaft for supporting the idler gear and the idler gear may also be installed on the first support or the second support. In some cases, the idler gear and the idler gear shaft may be installed in the transmission case or the motor case.

An idler gear bearing may be provided between the idler gear and the idler gear shaft for a smooth rotation.

The drive means of the present invention also includes the form of a simple disc that does not use gears. That is, when the disk is used as the driving means, the inner diameter portion of the disk is connected to the shaft of the motor or the transmission. The outer diameter portion is connected to the hub.

A hub to which various rotators are attached is installed to be rotatable on the first support or the second support through a bearing, and is coupled to the driven gear of the driving means or the disk through the connection portion to receive the power of the motor. In some cases, the hub and the driven gear may be integrally formed.

In some cases, the hub may be rotatably mounted on the casing of the motor or the transmission case through a bearing.

The hub may be provided with a sensor wheel or sensor teeth for detecting the number of revolutions and the rotational position of the hub.

The hub may be provided with a stopper and a stopper groove for limiting the amount of rotation of the hub. The first support or the second support may be provided with a stopper pin for limiting the amount of rotation of the hub.

The first support or the second support may be provided with a wire passage through which the electric wire of the motor is passed, and a storage unit for storing a connector for connecting the electric wire with external power and control signals, a connector pin, and a wire.

The first support or the second support may be fixed and supported by a housing and may be integrally formed with the housing or may be separately formed and coupled with the housing through fastening means.

The housing may be provided with a connector for supplying external power or providing a control signal to the motor, and the connector is connected to the electric wire of the motor. The connector may be provided on the first support or the second support, or may be provided independently.

The housing may be provided with a sensor for detecting the number of revolutions or rotation of the hub. The sensor may be provided on the first support or the second support as the case may be.

The housing may be provided with a bolt hole and a positioning pin hole for attaching the hub driving device according to the present invention to an arbitrary object.

In some cases, the hub drive device according to the present invention may be fixedly attached to an arbitrary object by a fixing means provided in the first support or the second support.

Further, the hub driving apparatus according to the present invention can be directly supported or installed on any object.

According to the hub driving apparatus according to the embodiment of the present invention, since the power unit for transmitting the power to the rotating body is provided in the hub of the rotating body, a separate installation space for the power unit is not needed, Can be designed

Further, since the motor, the transmission, the driving means, the hub and the rotating body are supported by the same support on the same axis, the problem of misalignment between the rotating shafts can be solved.

1 is a cross-sectional view of a hub drive apparatus according to an embodiment of the present invention.
2 is a cross-sectional view of a driving means according to an embodiment of the present invention.
3 is a view showing a case where various cams are installed in the hub driving device of the present invention.
4 is a view showing a case where a chain sprocket and a pulley are installed in the hub driving device of the present invention.
5 is a view showing a case in which gears and drive wheels are provided in the hub drive apparatus of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a hub drive apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a drive means according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the hub driving apparatus 1 according to the embodiment of the present invention includes a hub 100 in which various rotating bodies are installed, which are used for controlling rotational motion or rotational position, A motor 10 for driving the hub 100, a transmission 30 for converting the rotational force of the motor 10, and driving means 50 for transmitting the power of the motor to the hub 100 . The hub 100, the driving means 50, the transmission 30 and the motor 10 are supported by a first support 250 and a second support 300, 2 support 300 is integrally or separately manufactured and coupled with the housing 200. Through the housing 200, the hub drive device 1 of the present invention can be attached to any object as one assembly or module.

According to a preferred embodiment of the present invention, the motor 10, the transmission 30, and the driving means 50 are provided inside the hub 100.

The motor 10 may be an electric motor that operates by, for example, alternating current and direct current electricity as a power source for driving the hub 100. In the present embodiment, an electric motor is used as a power source for supplying power to the hub 100. However, the present invention is not limited to this, and any power source for generating a rotational force is applicable to the hub driving apparatus 1. [ Therefore, in the present specification, motor means not only an electric motor but also all kinds of power sources generating rotational force.

A transmission 30 may be attached to the motor 10 so that the speed and torque of the motor 10 can be changed by a cam, a gear, a chain sprocket, a pulley, a pump, a screw, Such as a wheel, to the required number of revolutions and torque of the rotating body attached to the hub 100.

A plurality of external gears, planetary gears, and the like may be used as the transmission 30, but the present invention is not limited thereto and includes all kinds of transmission devices capable of changing the rotation speed and torque of the motor 10. [

The motor (10) and the transmission (30) may be integrally manufactured or separately manufactured and may be coupled through fastening means. Therefore, the motor 10 and the transmission 30 may be regarded as one motor.

1, the motor shaft 12 of the motor 10 and the output shaft 32 of the transmission 30 may be positioned in a straight line, parallel, or at an arbitrary angle.

In some cases, the transmission 30 may be omitted and the motor 10 may be directly connected to the driving means 50 to drive the hub 100.

The drive means 50 is for transmitting the power of the motor 10 to the hub 100 when the transmission 30 or the transmission 30 is omitted and includes a drive gear 52 and an idler gear 54 And a driven gear 58. As shown in Fig. The drive gear 52 is coupled to the output shaft 32 of the transmission 30 or the motor shaft 12 of the motor 10 and the driven gear 58 is connected to the hub 100.

The idler gear 54 serves to transmit power between the driving gear 52 and the driven gear 58. In some cases, the idler gear 54 may be omitted and the drive gear 52 may drive the driven gear 58 directly.

The drive gear 52 may be connected to the output shaft 32 of the transmission 30 or the motor shaft 12 through the fixing means 51. Bolts, keys, and shrink fitting may be used as the fixing means 51 and the fixing means 51 may be fixed to the output shaft 32 or the motor shaft 12 through the fixing groove 53 provided on the output shaft 32 or the motor shaft 12. [ Or may be connected to the motor shaft 12.

2, the output shaft 32 may protrude to the outside of the hub drive device 1 and may be used for purposes other than hub drive. That is, it may have a function of power take off (PTO).

The protrusion 59 may be provided on the outer diameter portion of the driven gear 58. The protrusion 59 may be formed by a coupling portion 106 provided on the hub 100, So that the power of the motor 10 via the driving means 50 is transmitted to the hub 100.

The idler gear shaft 55 for supporting the idler gear 54 and the idler gear 54 may be installed on the second support 300 or the first support 250. The idler gear 54 and the idler gear shaft 55 may be connected to the transmission fixing portion 34 of the transmission 30 or the transmission case 31 or the motor fixing portion 14 of the motor 10, Or may be provided on the motor case 11.

An idler gear bearing (56) may be provided between the idler gear (54) and the idler gear shaft (55) for smooth rotation. As the idler bearing 56, a ball bearing, a needle roller bearing, a bushing, or the like may be used. A washer 57 is provided on the idler gear shaft 55 to minimize friction between the idler gear 54 and the second support 300 or the first support 250. A plurality of idler gears 54 may be used as needed.

In this case, the driving gear 52 may be a sun gear, the idler gear 54 may be a pinion gear or a planetary gear, Planet gear), and the driven gear 58 functions as a ring gear. In addition, the second support 300 or the first support 250 serves as a carrier to which the idler gear shaft 55 (or the pinion pin) is installed and fixed. The pinion gears can be used in a number of ways as required.

A planetary gear in the form of a sun gear 52 input, a carrier lock 300, and a ring gear 58 output, when the drive means 50 is configured as a planetary gear in the embodiment of FIG. 2, To the hub (100).

However, the present invention is not limited to this, but may be applied to the case of the sun gear 52 input, the ring gear 58 fixed, and the carrier output.

A ring gear 58 is fixed on the second support 300 or the first support 250 and a pinion gear is installed on the hub 100 And the power of the motor 10 or the transmission 30 is input to the sun gear 52. The drive unit 50 may be constructed as described above. In this case, the sun gear 52 input, the carrier output, and the ring gear 58 are in a fixed state.

As another example of the planetary gear structure, a sun gear 52 is fixed to a second support 300 or a first support 250, and a carrier (not shown) provided with a pinion gear 54 is provided, 32 or the motor shaft 12 and the ring gear 58 is connected to the hub 100. In this case, In this case, the sun gear 52 is fixed, the carrier input, and the ring gear 58 are in the output state.

The driven gear 58 of the drive unit 50 is connected to the hub 10 to which various rotors are attached so that the power of the motor 10 is transmitted to the transmission unit 30 and the drive unit 50 And transmitted to the hub 100. The hub 100 may be provided with various kinds of rotors that require power such as various cams, gears, chain sprockets, pulleys, pumps, screws, fans, wheels, winches, . In some cases, a plurality of different types of rotating bodies may be provided on the hub 100.

On the other hand, the driving means 50 can be configured in the form of a simple disk without using gears. The inner diameter portion of the disk is connected to the output shaft 32 of the motor shaft 12 or the transmission 30 through the fixing means 51. The outer diameter portion of the disk is connected to the hub The output of the motor 10 or the power unit 30 can be transmitted to the hub 100 by connecting the power unit 100 to the hub 100 through a means such as a spline or a tooth.

Even when the outer diameter portion of the disk and the hub 100 are integrally formed and the inner diameter portion of the disk is connected to the motor shaft 12 or the output shaft 32 through the fixing means 51, As shown in FIG.

The motor 10 and the transmission 30 may be coupled or integrally formed and fixed and supported by the first and second supports 250 and 300.

According to the embodiment of the present invention shown in FIG. 1, the motor 10 is provided with a guide portion 18, and the motor support portion 256 is formed in the first support 250, Concentricity is maintained between the motor 10 and the first support 250, the bearing 102 and the hub 100 when the first support 250 is assembled to the first support 250.

The first support 250 and the motor 10 are fixed to the motor fixing portion 14 of the motor 10 by fastening a plurality of fastening screws 16 provided on the first support 250, .

On the other hand, the transmission unit 30 is also provided with a guide portion 38 so that it can be assembled while maintaining the concentricity of the second support 300, the drive means 50, the bearing 102 and the hub 100 . The transmission 30 and the second support 300 are coupled to each other by fastening the plurality of fastening screws 36 provided on the second support 300 to the transmission fixing portion 34 of the transmission 30, Can be combined.

The driving means 50 may be provided on the first support 250 or the second support 300 and may be connected to the transmission 30 or the motor 10. [

The hub 100 to which various rotators are attached is rotatably mounted on the first support 250 and the second support 300 through a bearing 102 and is connected to the driving device 50 And the power of the motor 10 is transmitted to the driven gear 58 or the disk. In some cases, the hub 100, the driven gear 58, or the hub 100 and the disk may be integrally formed.

The hub 100 is provided with a bearing support 104 to support the bearing 102. A bearing support portion 258 is also provided in the first support 250 and a bearing support portion 308 is also provided in the second support 300 so that the bearing 102 can be firmly supported.

In some cases, the hub 100 may be rotatably mounted on the motor 10 or the transmission 30 through the bearing 102. The bearing 102 may be supported through the motor fixing portion 14 or the motor case 11 or through the transmission fixing portion 34 or the transmission case 31. [

A sensor wheel (not shown) may be attached to the hub 100 to detect the rotational speed and rotational position of the hub 100, or a sensor tooth 108 may be provided .

In addition, the hub 100 may be provided with a stopper 114 and a stopper groove 112 for forcibly limiting the amount of rotation of the hub 100. The stopper groove 112 may be formed in a groove on the outer circumferential surface of the hub 100 and may be provided at the end of the hub 100 as in the embodiment of FIG. . The stopper groove 112 may be formed integrally with the hub 100 in the form of a protrusion rather than a groove, or may be formed by assembling and fixing a separate object to the hub 100.

Also, the stopper 114 may be provided by inserting a separate object into the hub 100. Alternatively, as in the embodiment of FIG. 1, the stopper 114 may be provided with a stopper groove 112 by a predetermined interval on the circumference of the hub 100 The stopper pin 110 provided in the second support 300 physically contacts the stopper 114 so that the rotation of the hub 100 can be forcibly restricted. This stopper 114 is provided when it is necessary to limit the motion of the rotating body provided in the hub 100 to a certain range.

The stopper pins 110 for limiting the amount of rotation of the hub 100 may be provided in various forms in the first support 250 or the second support 300 as described above. 1 and 2, the stopper pin 110 is inserted into the second support 300 in the form of a bolt, a rivet, or a pin, and one end of the stopper pin 110 is extended into the stopper groove 112, The rotation of the hub 100 is limited by the physical contact with the hub 114. The stopper pin 110 may be integrally formed with the second support 300 or the first support 250 as the case may be.

In order to prevent contaminants from entering the bearing 102, the bearing support 104, the sensor teeth 108, the stopper 114 and the stopper groove 112 from the outside, the first support 250 or the second support 250, The bearing 102, the bearing support 104, the sensor teeth 108, the stopper 114, the stopper groove 112, and the like are provided on the outside of the second support 300, As shown in FIG.

The first support 250 or the second support 300 is provided with a wire passage 252 through which the wire 20 of the motor 10 passes and a connector 252 through which the external power and control signals for the motor 10 are connected. And a receiving portion 254 for receiving the wires coupled to the connecting pin of the connector 25.

A sensor hole 302, a bolt fastening hole 306, an output shaft hole 310 and a bolt hole 304 are formed in the second support 300 or the first support phase 250 as needed And may be variously provided.

The first support 250 or the second support 300 is fixed to and supported by the housing 200 and integrally formed with the housing 200 or separately formed and fixed to the housing 200 through the fastening screw 210. [ . ≪ / RTI >

The housing 200 may be provided with a connector hole 212 for installing a connector 25 for supplying external power or a control signal to the motor 10, And is connected to the electric wire 20. The connector 25 may be provided on the first support 250 or the second support 300 or may be provided independently. Meanwhile, the connector 250 and the wire 20 may be fabricated into a single module or assembly and inserted into the first support 250 or the second support 300.

The housing 200 may be provided with a sensor 120 through a sensor hole 214 for detecting the number of revolutions or the rotational position of the hub 100 as described above. One end of the sensor 120 is provided with a connector 122 electrically connected to the outside and the other end of the sensor 120 is disposed close to the sensor teeth 108 to change an electric signal supplied from the outside. .

1, a non-contact type sensor is shown as the sensor 120, but the present invention is not limited to this, and a contact type sensor is also applicable. For example, a brush type sensor is provided in the first support 300, and a circular conductor strip or a conductive plate (for example, a copper strip or a copper plate So that the position of the hub 100 can be detected. That is, the electric signal supplied through the brush is energized or short-circuited according to the position of the conductor band or the conductive plate, so that the position of the hub 100 can be known. Of course, the conductor strip and the conductor plate are electrically insulated from the hub 100.

The sensor 120 may be provided on the first support 250 or the second support 300 as the case may be.

Meanwhile, the housing 200 may be provided with a fastening hole 205 and a positioning pin hole (not shown) for attaching the hub driving device 1 according to the present invention to an arbitrary object as one module or assembly .

The hub drive device 1 according to the present invention can be mounted on any object by means of fixing means (not shown, for example, screws, clamps, etc.) provided in the first support 250 or the second support 300 As shown in Fig. Further, the hub driving apparatus 1 according to the present invention may be installed directly on any object provided with the functions of the first support 250 and the second support 300.

FIG. 3 to FIG. 5 show examples of various rotators driven by the hub driving apparatus 1 according to the present invention.

3 shows an example in which a groove-like cam 500, a protruding cam 600, and a shank cam 700 are installed on a hub 100 of a hub drive apparatus 1 according to the present invention. However, the present invention is not limited to this, and includes all the cases in which cams of various shapes and purposes are driven through the hub drive device 1.

 4 shows a case where a chain sprocket 800 and a pulley 900 are installed on the hub 100 and FIG. 5 shows a state where the gear 1000 and the drive wheel 1100 are mounted on the hub 100 Show.

3 and FIG. 5, there is shown an example in which a plurality of different types of rotating bodies are installed in the hub 100 for convenience, but the present invention is not limited thereto, and in the case where one rotating body is installed on the hub 100 .

The present invention includes all cases in which a rotating body, which requires power or is used for controlling a motion or a position, is attached to the hub 100 as a rotating body. The rotating body and the hub 100 may be integrally formed or separately manufactured and may be coupled to each other.

As described above, the hub driving apparatus 1 according to the embodiment of the present invention can be used to drive various kinds of rotating bodies, and a power unit for transmitting power to the rotating body is not installed outside the rotating body, It is possible to design a machine or an apparatus including the rotating body compactly.

Further, according to the present invention, since the rotating body, the hub, the drive means, the transmission and the motor are all supported by the same support, that is, the first support and the second support, the alignment of the shafts is maintained well so that vibration and noise problems Can be solved.

The hub driving apparatus according to the present invention includes a connector for supplying a power or a control signal of a motor and a sensor for detecting a speed and a position of the rotating body together with the hub driving apparatus, It can be simply attached to a machine or a mechanism.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

10: Motor
11: Motor case
12: Motor shaft
14:
16: Tightening screw
18: Guide section
20: Wires
25: Connector
30: Transmission
31: Transmission case
32: Output shaft
34:
36: Clamping screw
38: guide portion
50: driving means
51: Fixing means
52: driving gear, sun gear
53: Fixing groove
54: idler gear, pinion gear
55: idler gear shaft, pinion gear shaft
56: idler gear bearing, pinion gear bellow
57: Washer
58: driven gear, ring gear
59:
100: Hub
102: Bearings
104: Bearing support
106:
108: sensor teeth
110: Stopper pin
112: Stover Home
114: Stopper
120: sensor
122: Connector
124:
200: Housing
205: fastening hole
210: fastening screw
212: Connector hole
214: sensor hole
250: First support carrier
252:
254:
256:
258: Bearing support
260: extension part
300: second support, carrier
302: sensor hole
304: Bolt hole
306: fastening bolt hole
308: Bearing support
310: Output shaft hole
312: extension part
500: groove cam
600: projecting cam
700: Eccentric cam
800: chain sprocket
900: Pulley
1000: gear
1100:

Claims (16)

A first support and a second support disposed axially apart from each other;
A hub rotatably installed in the first and second supports;
A power source installed inside the hub and generating power; And
And driving means installed inside the hub and adapted to transmit the power of the power source to the hub,
And the hub, the power source, and the drive means are supported by the first support or the second support. The method according to claim 1,
And a transmission device for converting the rotational speed and torque of the power source and transmitting the converted rotational speed and torque to the drive means. 3. The method of claim 2,
Wherein the power source and the transmission are integrally manufactured or separately manufactured and are coupled through fastening means. 3. The method according to claim 1 or 2,
The driving means
A drive gear connected to an output shaft of the transmission or power source; And
And a driven gear which is connected to the hub and receives power from the drive gear and transmits the power to the hub. 5. The method of claim 4,
Wherein the drive means further comprises an idler gear for transmitting power between the drive gear and the driven gear. 6. The method of claim 5,
The idler gear shaft for supporting the idler gear is installed on the first support, the second support, the transmission fixing portion of the transmission, the transmission case, the motor fixing portion of the motor, or the motor case. The method according to claim 6,
And an idler gear bearing is provided between the idler gear and the idler gear shaft for smooth rotation. The method according to claim 6,
A washer is provided on the idler gear to minimize friction between the idler gear and the first support, the second support, the transmission fixing portion of the transmission, the transmission case, the motor fixing portion of the motor, or the motor case. 3. The method according to claim 1 or 2,
Wherein the drive means is a planetary gear including a sun gear, a carrier and a ring gear as rotation elements thereof,
Wherein one of the three rotary elements is connected to the output shaft of the transmission or the power source, the other is fixed to the first support or the second support, and the other is connected to the hub. 3. The method according to claim 1 or 2,
The driving means is in the form of a disc,
Wherein the inner diameter portion of the disk is connected to the output shaft of the transmission or the power source, and the outer diameter portion of the disk is connected to the hub. The method according to claim 1,
Wherein the hub is rotatably supported by bearings in the first and second supports. The method according to claim 1,
Wherein the hub is provided with a sensor wheel or a sensor tooth for detecting the rotational speed and rotational position of the hub. The method according to claim 1,
Wherein the hub includes a stopper groove for forcibly limiting a rotation amount of the hub, and the first support or the second support includes a stopper pin extending into the stopper groove. The method according to claim 1,
Wherein the first support or the second support is provided with a wire passage through which the electric wire of the power source passes, a connector to which an external power source and a control signal for the power source are connected, and a storage unit for storing electric wires coupled to the connector. Hub drive. The method according to claim 1,
Wherein the first support or the second support is fixed to a separate housing and is integrally formed with or separate from the housing. The method according to claim 1,
Wherein the hub is mounted with a cam, a chain sprocket, a pulley, a gear or a drive wheel.

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