A drive device that rotates a single output shaft at high or low speed and a juicer combined with a mixer using the drive device.

Abstract

The present invention relates to a juicer that can be used as a driving device for rotating a single output shaft at high speed or low speed and a mixer using the driving device. The driving device for rotating a single output shaft at high speed or low speed according to the present invention includes a driving motor, a clutch that is coupled to a rotor shaft top gear formed on the motor shaft of the driving motor and rotates together with the motor shaft when moving downward by moving up and down, an output shaft whose lower end is coupled to the upper end of the clutch and rotates together with the clutch, an output shaft gear that is inserted into the output shaft and rotates, and is coupled to the clutch and rotates together with the clutch when the clutch moves upward, a rotor shaft gear that is inserted into the motor shaft and rotates together with the motor shaft and is elastically supported, and contacts the clutch and moves downward when the clutch moves downward, and a reduction gear that is gear-coupled between the rotor shaft gear and the output shaft gear and reduces the rotational speed of the output shaft gear compared to the rotational speed of the motor shaft.

Description

[Technical Field]

[0001] The present invention relates to a drive unit that rotates a single output shaft at high or low speed, and a juicer that can be used as both a juicer that crushes and squeezes ingredients such as vegetables and fruits with a screw that rotates at a low speed to produce juice, and a mixer that crushes and mixes ingredients with a rotary blade that rotates at a high speed, so that the juicer can be used as both a juicer that crushes and squeezes ingredients such as vegetables and fruits with a screw that rotates at a low speed, and a mixer that can be used as both a juicer that crushes and squeezes ingredients such as vegetables and fruits with a rotary blade that rotates at a high speed. [Background technology]

[0002] Generally, a blender is a device that crushes and mixes food ingredients such as vegetables, fruits, and grains using rotating blades (mixer blades) that rotate at high speed, while a juicer is a household device that crushes and squeezes ingredients between a drum and a screw that rotates at low speed, and makes juice by squeezing vegetables and fruits using the same principle as grinding and squeezing beans in a mill.

[0003] Since both devices operate similarly in that they use a motor to rotate mixer blades or screws, they can be combined into one device for dual use, but this creates a problem in that the mixer blades must be rotated at high speeds and the screws must be rotated at low speeds.

[0004] Korean Patent No. 1994357 discloses a drive unit that can be used for both a mixer and a juicer by forming a dual shaft with a high-speed shaft that rotates at a high speed and a low-speed shaft that rotates at a low speed. However, when the high-speed shaft and the low-speed shaft are formed into a dual shaft, noise and waterproofing problems can occur due to interference between the two shafts. Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to solve the problems of the related art and to provide a drive unit that rotates a single output shaft at high or low speeds using a single motor that rotates at high speed, so that the juicer can be used as both a juicer and a mixer by rotating a single output shaft at high or low speeds, and a drive unit that can be used as both a juicer and a mixer.

[0006] The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0007] The object of the present invention is to provide a drive motor, a clutch that moves up and down and is connected to a rotor shaft top gear formed on a motor shaft of the drive motor to rotate together with the motor shaft when the drive motor moves downward, an output shaft whose lower end is connected to an upper end of the clutch and rotates together with the clutch, an output shaft gear that is inserted into the output shaft and rotates, and that is connected to the clutch and rotates together with the clutch when the clutch moves upward, a rotor shaft gear that is inserted into the motor shaft and rotates together with the motor shaft, is elastically supported, and comes into contact with the clutch and moves downward when the clutch moves downward, and a reduction gear that is gear-connected between the rotor shaft gear and the output shaft gear to reduce the rotational speed of the output shaft gear compared to the rotational speed of the motor shaft, and When the clutch moves upward, the rotor shaft top gear and the clutch are disengaged, the rotor shaft gear and the reduction gear are engaged, and the output shaft gear and the clutch are engaged, the high-speed rotation of the motor shaft is reduced by the reduction gear to rotate the output shaft gear, and the rotation of the output shaft gear is transmitted to the clutch and the output shaft to rotate the output shaft at a slower speed than the motor shaft.

[0008] The clutch may further include a clutch vertical movement unit for moving the clutch vertically.

[0009] Here, the clutch vertical movement unit may include a clutch case coupled to the clutch, and a vertical drive unit connected to one side of the clutch case to move the clutch case up and down.

[0010] Here, the rotor shaft gear may further include a spring for elastically supporting a lower side of the rotor shaft gear.

[0011] The motor may further include a bearing interposed between the output shaft and the output shaft gear.

[0012] The driving motor may further include a housing that accommodates the driving motor, the clutch, the output shaft gear, the rotor shaft gear, and the reduction gear, and an upper end of the output shaft may protrude from an upper portion of the housing.

[0013] Here, the reduction gear may include a first reduction gear geared and coupled to the rotor shaft gear, and a second reduction gear geared and coupled between the first reduction gear and the output shaft gear.

[0014] Here, the first reduction gear and the second reduction gear may be formed in two stages, with a first gear train formed on a circumference with a small radius and a second gear train formed on a circumference with a large radius, and the second gear train of the first reduction gear may be gear-engaged with the rotor shaft gear to reduce rotation, the second gear train of the second reduction gear may be gear-engaged with the first gear train of the first reduction gear to reduce rotation, and the output shaft gear may be gear-engaged with the first gear train of the second reduction gear to reduce rotation.

[0015] The present invention also provides a drive motor, a rotor shaft gear inserted into a motor shaft of the drive motor to rotate together with the motor shaft and elastically supported to move up and down, an output shaft coupled to a rotor shaft top gear formed on the motor shaft to rotate together with the motor shaft and move the rotor shaft gear downward when the rotor shaft gear moves downward from the top of the motor shaft, an output shaft gear inserted into the output shaft to rotate and coupled to the output shaft when the output shaft moves upward, and a reduction gear coupled between the rotor shaft gear and the output shaft gear to reduce the rotational speed of the output shaft gear compared to the rotational speed of the motor shaft, and when the output shaft moves downward, the output shaft When the output shaft moves upward, the output shaft is disengaged from the rotor shaft top gear, a gear engagement between the rotor shaft gear and the reduction gear is established, and the output shaft is engaged with the output shaft gear, the high-speed rotation of the motor shaft is reduced by the reduction gear to rotate the output shaft gear, and the rotation of the output shaft gear is transmitted to the output shaft to rotate the output shaft at a speed slower than that of the motor shaft.

[0016] Here, when an upper module accommodating a rotation mechanism that receives power from the output shaft and rotates is coupled to the top of the drive unit, the upper module further includes an output shaft pulley coupled to the upper end of the output shaft, to which the rotation shaft of the rotation mechanism is coupled, and the rotation shaft presses the output shaft pulley to move the output shaft downward.

[0017] Here, the hollow of the output shaft gear into which the output shaft is inserted has a lower end with a larger diameter than the upper end, forming a step, and the upper end of the hollow may be formed with an output shaft coupling portion into which an intermediate coupling portion formed at the middle portion of the output shaft is inserted and coupled when the output shaft moves upward.

[0018] Here, a gear train may be formed on the outer surface of the intermediate coupling portion and the inner surface of the output shaft coupling portion, or a key protrusion or key groove may be formed on the outer surface of the intermediate coupling portion, and the output shaft coupling portion may be formed with a key groove corresponding to the key protrusion formed on the outer surface of the intermediate coupling portion or a key protrusion corresponding to the key groove formed on the outer surface of the intermediate coupling portion.

[0019] Here, the rotor shaft gear may further include a spring for elastically supporting a lower side of the rotor shaft gear.

[0020] The motor may further include a bearing interposed between the output shaft and the output shaft gear.

[0021] Here, the bearing may be disposed inside or outside the lower end of the output shaft gear, and may further include a spring disposed inside the output shaft gear between the bearing and a stepped portion formed at the middle portion of the output shaft to elastically support the output shaft.

[0022] The driving motor may further include a housing that accommodates the driving motor, the output shaft gear, the rotor shaft gear, and the reduction gear therein, and an upper end of the output shaft may protrude from an upper portion of the housing.

[0023] Here, the reduction gear may include a first reduction gear geared and coupled to the rotor shaft gear, and a second reduction gear geared and coupled between the first reduction gear and the output shaft gear.

[0024] Here, the first reduction gear and the second reduction gear may be formed in two stages, with a first gear train formed on a circumference with a small radius and a second gear train formed on a circumference with a large radius, and the second gear train of the first reduction gear may be gear-engaged with the rotor shaft gear to reduce rotation, the second gear train of the second reduction gear may be gear-engaged with the first gear train of the first reduction gear to reduce rotation, and the output shaft gear may be gear-engaged with the first gear train of the second reduction gear to reduce rotation.

[0025] Here, a motor shaft coupling guide having peaks and valleys formed in the axial direction and circumferential direction may be formed on an upper portion of the rotor shaft gear, and an output shaft coupling guide having peaks and valleys formed in the axial direction and circumferential direction corresponding to the motor shaft coupling guide may be formed on a lower portion of the output shaft.

[0026] Here, the gear teeth of the rotor shaft gear and the gear teeth of the reduction gear gear geared to the rotor shaft gear may be formed inclined with respect to the axial direction.

[0027] Here, it is preferable that the angle of inclination between the gear teeth of the rotor shaft gear and the gear teeth of the reduction gear gear geared to the rotor shaft gear is within 5° with respect to the axial direction.

[0028] Furthermore, the above object can be achieved by the present invention by a juicer that can be used as a mixer, which includes any one of the above-mentioned drive units, a mixer module that includes a rotary blade that rotates at high speed by receiving power from the output shaft and is attached to the top of the drive unit, and a juicing module that includes a screw that rotates at low speed by receiving power from the output shaft and is attached to the top of the drive unit in place of the mixer module. [Effects of the Invention]

[0029] According to the present invention, high speed or low speed is realized with a single output shaft, which has the advantage of solving the noise and waterproofing problems that occur when realizing high speed and low speed with a conventional dual shaft.

[0030] Another advantage is that a drive device can be configured that can be used as both a mixer and a juicer by using a motor that rotates at high speed to drive the output shaft at high or low speed. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a perspective view of a driving device for rotating a single output shaft at high or low speed according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing the internal configuration of FIG. [Figure 3] 3A and 3B are diagrams showing the coupling structure in a state where the clutches in FIG. 2 are moved upward and downward, respectively. [Figure 4] 3A and 3B are diagrams showing the coupling structure in a state where the clutches in FIG. 2 are moved upward and downward, respectively. [Figure 5] 1A and 1B are diagrams illustrating operation in a low-speed mode and a high-speed mode, respectively. [Figure 6] 1A and 1B are diagrams illustrating operation in a low-speed mode and a high-speed mode, respectively. [Figure 7] 10 is a perspective view of a driving device for rotating a single output shaft at high or low speed in accordance with another embodiment of the present invention; FIG. [Figure 8] FIG. 8 is a perspective view showing the internal configuration of FIG. [Figure 9] 1A and 1B are diagrams illustrating operation in a low-speed mode and a high-speed mode, respectively. [Figure 10] 1A and 1B are diagrams illustrating operation in a low-speed mode and a high-speed mode, respectively. [Figure 11] 1 is a diagram showing a juice extractor that can also be used as a mixer according to an embodiment of the present invention when used as a juice extractor; FIG. [Figure 12] 1 is a diagram showing a juice extractor that can also be used as a mixer according to an embodiment of the present invention when used as a mixer; FIG. [Figure 13] 10 is a view showing the coupling state of an output shaft and an output shaft gear according to another embodiment of the present invention; FIG. [Figure 14] FIG. 10 is a view showing a drive device according to still another embodiment of the present invention. [Figure 15] FIG. 15 is an enlarged view of a main part of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0032] Specific details of the embodiment are included in the detailed description and drawings.

[0033] The advantages and features of the present invention, as well as methods for achieving the same, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various different forms. The present embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully convey the scope of the invention to those skilled in the art.

[0034] Like reference numbers refer to like elements throughout the specification.

[0035] Hereinafter, in the embodiments of the present invention, the present invention will be described with reference to the drawings illustrating a drive unit that rotates a single output shaft at high or low speed and a juice extractor that can be used as a mixer using the drive unit.

[0036] FIG. 1 is a perspective view of a drive device for rotating a single output shaft at high or low speed according to one embodiment of the present invention; FIG. 2 is a perspective view showing the internal structure of FIG. 1; FIGS. 3 and 4 are views showing the coupling structure of FIG. 2 when the clutch is moved up and down, respectively; and FIGS. 5 and 6 are views showing operation in low-speed mode and high-speed mode, respectively.

[0037] A driving device 100 for rotating a single output shaft at high or low speed according to one embodiment of the present invention may include a driving motor (not shown), a clutch 110, a rotor shaft gear 120, an output shaft 130, an output shaft gear 140, and reduction gears 150, 155.

[0038] The rotor shaft gear 120, clutch 110, output shaft 130, output shaft gear 140, and reduction gears 150 and 155 constituting the drive unit 100 according to the present invention may be disposed inside a housing 180, and the upper end of the output shaft 130 protrudes above the upper part of the housing 180 through an output shaft through-hole 182 at the top of the housing 180. In the drawings, the drive motor is disposed below the illustrated housing 180 (only the motor shaft 102 extending upward from the drive motor is shown inside the housing 180 in the drawings), but it may also be formed so as to be disposed inside the housing 180 together with the above components. The drive motor may also be disposed inside a housing other than the illustrated housing 180, not shown.

[0039] The drive motor may be a rotary motor that generates power to rotate the output shaft 130 at high or low speeds. In this embodiment, the drive motor may be a motor that rotates only at high speeds without speed adjustment.

[0040] The motor shaft 102 of the driving motor may be inserted into the housing 180 through a motor shaft through-hole 184 at the bottom of the housing 180. At this time, a bearing 185 may be interposed between the motor shaft through-hole 184 and the motor shaft 102.

[0041] A rotor shaft top gear 105 may be formed on an upper end of the motor shaft 102. The rotor shaft top gear 105 is engaged with or disengaged from the clutch 110 when the clutch 110 moves up and down, and the rotor shaft top gear 105 may directly transmit or disengage the rotational force of the motor shaft 102 to the clutch 110. The rotor shaft top gear 105 may be formed integrally with the motor shaft 102 or separately.

[0042] The rotor shaft gear 120 is inserted into the motor shaft 102 to rotate together with the motor shaft 102 and is elastically supported at the bottom so that it can move up and down along the motor shaft 102. To enable the rotor shaft gear 120 to move up and down along the motor shaft 102 and rotate together with the motor shaft 102, the inner surface of the insertion hole of the rotor shaft gear 120 may be formed as a square hole, and the outer surface of the motor shaft 102 may be formed as a corresponding square shaft. Alternatively, the inner surface of the insertion hole of the rotor shaft gear 120 and the outer surface of the motor shaft 102 may be gear-coupled by forming a gear train that is aligned vertically in the circumferential direction.

[0043] A spring 122 is interposed between the bottom surface of the rotor shaft gear 120 and the bearing 185, so that the rotor shaft gear 120 can be elastically supported. As will be described later, when the clutch 110, which moves up and down from the top of the motor shaft 102, moves downward, the lower end of the clutch 110 comes into contact with the upper end of the rotor shaft gear 120, so that the rotor shaft gear 120 can move downward along the motor shaft 102. At this time, an elastic force can be stored in the spring 122 that supports the lower side of the rotor shaft gear 120. Also, when the clutch 110 moves upward, the rotor shaft gear 120 can return to its upward position due to the elastic force of the spring 122.

[0044] The clutch 110 moves up and down, and when the clutch 110 moves downward, it is coupled with the motor shaft 102 so that the power of the motor shaft 102 can be directly transmitted. When the clutch 110 moves upward, it is disengaged from the motor shaft 102 so that the power is not directly transmitted from the motor shaft 102, but the rotational force of the motor shaft 102 can be transmitted via reduction gears 150 and 155 and an output shaft gear 140, which will be described later.

[0045] The clutch 110 may be formed in a shaft shape with a hollow center. A motor shaft coupling part 112 into which the rotor shaft top gear 105 is inserted and coupled may be formed at a middle part of the clutch 110. A gear train may be formed on an inner surface of the motor shaft coupling part 112 and an outer surface of the rotor shaft top gear 105 in a circumferential direction and be gear-coupled so that the clutch 110 can move downward and the rotor shaft top gear 105 can be coupled to the motor shaft coupling part 112 to transmit the rotational force of the motor shaft 102 to the clutch 110.

[0046] The hollow space below the motor shaft coupling part 112 may be formed with a diameter larger than that of the motor shaft coupling part 112 to form a stepped jaw 111. As shown in Fig. 3, when the clutch 110 is moved upward, the rotor shaft top gear 105 is located below the stepped jaw 111 and is not engaged with the clutch 110. Conversely, when the clutch 110 is moved downward, the rotor shaft top gear 105 is inserted into and engaged with the motor shaft coupling part 112 as shown in Fig. 4, so that the rotational force of the motor shaft 102 can be directly transmitted to the clutch 110.

[0047] An upper end of the clutch 110 can be inserted into or released from a clutch coupling portion 142 formed at a lower end of the output shaft gear 140, which will be described later. When the clutch 110 moves upward, the upper end of the clutch 110 is inserted into the clutch coupling portion 142 of the output shaft gear 140, and the rotational force of the output shaft gear 140 is transmitted thereto, allowing the clutch 110 to rotate together with the output shaft gear 140. A gear train that is vertically aligned in the circumferential direction may be formed on the outer surface of the upper end of the clutch 110 and the inner surface of the clutch coupling portion 142, and may be gear-coupled, so that the upper end of the clutch 110 can move upward and engage with the clutch coupling portion 142 to transmit the rotational force of the output shaft gear 140 to the clutch 110.

[0048] The lower end of the output shaft 130 may be inserted into the hollow upper end of the clutch 110 and coupled. At this time, the insertion depth of the lower end of the output shaft 130 may change as the clutch 110 moves up and down, but the coupling between the clutch 110 and the output shaft 130 is not released. The inner surface of the upper end of the clutch 110 may be formed with a square hole, and the outer surface of the lower end of the output shaft 130 may be formed with a corresponding square shaft, so that the clutch 110 can move up and down along the lower end of the output shaft 130 and transmit the rotational force of the clutch 110 to the output shaft 130. Alternatively, the inner surface of the upper end of the clutch 110 and the outer surface of the lower end of the output shaft 130 may be gear-coupled by forming a gear train that is aligned vertically in the circumferential direction.

[0049] The clutch vertical movement unit 160 moves the clutch 110 up and down. The clutch vertical movement unit 160 may include a clutch case 162 and a vertical drive unit 164. The clutch 110 can be automatically moved up and down using the vertical drive unit 164. The clutch case 162 may be fixedly coupled to the clutch 110. The clutch case 162 extends to one lateral side of the clutch 110, and the vertical drive unit 164 may be connected to the extended side. The vertical drive unit 164 is connected to one side of the clutch case 162 to move the clutch case 162 up and down. For example, the vertical drive unit 164 may be a known motor such as a linear motor 164. The vertical drive unit 164 may be formed of a rotary motor (not shown) and a screw formed on a motor shaft of the rotary motor, and the clutch case 162 may be configured to move up and down along the screw depending on the rotation direction of the motor.

[0050] The upper end of the output shaft 130 protrudes from the upper portion of the housing 180, and the upper end may be coupled to a rotating shaft of a rotation mechanism to which the rotational force of the output shaft 130 is transmitted. The rotating mechanism may be, but is not limited to, a rotary blade of a mixer or a screw of a juice extractor. The upper end of the output shaft 130 may be formed as a square shaft or a square hole so that it can be coupled to the rotating shaft of the rotation mechanism to transmit power. For reference, a square shaft is shown in the drawings.

[0051] The lower end of the output shaft 130 is inserted into the hollow of the clutch 110. Alternatively, the opposite configuration is possible. That is, the upper end of the clutch 110 may be inserted into the lower end of the output shaft 130. The insertion depth may vary depending on the vertical movement of the clutch 110. A bearing 186 may be interposed between the output shaft through-hole 182 in the upper part of the housing 180 and the output shaft 130.

[0052] The output shaft gear 140 is hollow and can be inserted into the output shaft 130 to rotate, and when the clutch 110 moves upward, the clutch 110 engages with a clutch engaging portion 142 at the lower end, thereby transmitting the rotational force of the output shaft gear 140 to the clutch 110. As will be described later, the output shaft gear 140 can be reduced in speed by the reduction gears 150 and 155 to rotate at a low speed, and the rotational force of the output shaft gear 140 can be transmitted to the clutch 110 and the output shaft 130 coupled to the clutch 110, thereby rotating the output shaft 130 at a low speed. As shown in FIGS. 3 and 4, a bearing 187 can be interposed between the output shaft gear 140 and the output shaft 130.

[0053] The reduction gears 150, 155 are geared between the rotor shaft gear 120 and the output shaft gear 140 and are connected to the motor shaft 102, and can reduce the rotational speed of the output shaft gear 140 compared to the rotational speed of the rotor shaft gear 120 which rotates together.

[0054] In order to adjust the reduction ratio as needed, the reduction gears 150, 155 may be formed of a plurality of reduction gears 150, 155. In this embodiment, the first reduction gear 150 and the second reduction gear 155 are adopted, and the rotation speed of the motor shaft 102 can be reduced by the two reduction gears 150, 155.

[0055] The first reduction gear 150 may be gear-coupled between the rotor shaft gear 120 and the second reduction gear 155, and the second reduction gear 155 may be gear-coupled between the first reduction gear 150 and the output shaft gear 140. In this case, the first reduction gear 150 and the second reduction gear 155 may be configured as a two-stage gear train, with a first gear train 151, 156 formed on a circumference with a small radius and a second gear train 152, 157 formed on a circumference with a large radius. As shown in the figure, the second gear train 152 of the first reduction gear 150 may be gear-coupled to the rotor shaft gear 120. Therefore, depending on the gear ratio between the rotor shaft gear 120 and the second gear train 152 of the first reduction gear 150, the first reduction gear 150 may rotate at a reduced speed compared to the rotor shaft gear 120. In addition, the first gear train 151 of the first reduction gear 150 may be gear-coupled to the second gear train 157 of the second reduction gear 155. Therefore, due to the gear ratio between the first gear train 151 of the first reduction gear 150 and the second gear train 157 of the second reduction gear 155, the second reduction gear 155 can rotate at an additional reduced speed compared to the first reduction gear 150. In addition, the first gear train 156 of the second reduction gear 155 can be gear-coupled with the output shaft gear 140. Therefore, due to the gear ratio between the first gear train 156 of the second reduction gear 155 and the output shaft gear 140, the output shaft gear 140 can rotate at an additional reduced speed compared to the second reduction gear 155.

[0056] The upper and lower ends of the first reduction gear 150 and the second reduction gear 155 are rotatably supported inside the housing 180, respectively, and bearings 188 may be interposed between the upper and lower ends of the first reduction gear 150 and the second reduction gear 155 and the housing 180.

[0057] Hereinafter, the operation of the output shaft 130 in the low speed mode and the high speed mode will be described with reference to FIGS.

[0058] When the clutch 110 is moved upward, the output shaft 130 can be rotated in a low speed mode, and when the clutch 110 is moved downward, the output shaft 130 can be rotated in a high speed mode.

[0059] First, as shown in Fig. 5, in the low-speed mode, the clutch vertical movement unit 160 (not shown in Figs. 5 and 6) moves the clutch 110 upward. More specifically, the vertical drive unit 164 moves the clutch case 162 upward, thereby moving the clutch 110 coupled to the clutch case 162 upward.

[0060] Alternatively, when the clutch vertical movement unit 160 is not operating, the rotor shaft gear 120 may be configured to be pushed upward by the spring 122. That is, under normal circumstances, the rotor shaft gear 120 is in an upwardly raised state by the spring 122, and when the rotor shaft gear 120 is to be lowered, the clutch vertical movement unit 160 may be operated to lower the clutch 110, causing the rotor shaft gear 120 to lower against the compressive force of the spring 122.

[0061] When the clutch 110 moves upward, the upper end of the clutch 110 may be coupled to the clutch coupling portion 142 of the output shaft gear 140. Also, the coupling between the motor shaft coupling portion 112 and the rotor shaft top gear 105 at the upper end of the motor shaft 102 may be released (see FIG. 3). At this time, when the rotor shaft gear 120, which is elastically supported in contact with the lower end of the clutch 110 and is moved downward by the clutch 110 as shown in FIG. 6, the gear coupling between the rotor shaft gear 120 and the reduction gears 150 and 155 may be released, or as the clutch 110 moves upward (see FIG. 5), the rotor shaft gear 120 may move upward along the motor shaft 102, and the gear coupling between the rotor shaft gear 120 and the second gear train 152 of the first reduction gear 150 may be established.

[0062] As the clutch 110 moves upward, the engagement between the rotor shaft top gear 105 and the motor shaft coupling portion 112 of the clutch 110 is released, and the rotational force of the motor shaft 102 cannot be directly transmitted to the output shaft gear 140. Instead, the rotational force of the motor shaft 102 can be transmitted to the reduction gears 150 and 155 via the rotor shaft gear 120. Due to the reduction ratio of the first reduction gear 150 and the second reduction gear 155, the output shaft gear 140 can rotate at a reduced speed compared to the motor shaft 102. Therefore, the rotation of the output shaft gear 140 is transmitted to the clutch 110 coupled to the output shaft gear 140 and the output shaft 130 coupled to the clutch 110, and the output shaft 130, together with the output shaft gear 140, can rotate at a reduced speed compared to the motor shaft 102.

[0063] 6, in the high-speed mode, the clutch vertical movement unit 160 moves the clutch 110 downward. More specifically, the vertical drive unit 164 moves the clutch case 162 downward, thereby moving the clutch 110 coupled to the clutch case 162 downward.

[0064] When the clutch 110 moves downward, the engagement between the upper end of the clutch 110 and the clutch engagement portion 142 of the output shaft gear 140 may be released. At this time, the motor shaft engagement portion 112 and the rotor shaft top gear 105 at the upper end of the motor shaft 102 are engaged, so that the rotational force of the motor shaft 102 can be directly transmitted to the clutch 110. At this time, as the clutch 110 moves downward, the rotor shaft gear 120 in contact with the lower end of the clutch 110 moves downward along the motor shaft 102, so that the gear engagement between the rotor shaft gear 120 and the second gear train 152 of the first reduction gear 150 may be released.

[0065] As the clutch 110 moves downward in this manner, the rotor shaft top gear 105 and the motor shaft coupling portion 112 of the clutch 110 are coupled together, allowing the rotational force of the motor shaft 102 to be directly transmitted to the clutch 110, and the output shaft 130 coupled to the clutch 110 to rotate at high speed. At this time, the gear coupling between the rotor shaft gear 120 and the reduction gears 150 and 155 is released, and the coupling between the top end of the clutch 110 and the clutch coupling portion 142 of the output shaft gear 140 is released, so that the rotational force of the motor shaft 102 is not transmitted to the reduction gears 150 and 155 and the output shaft gear 140.

[0066] The drive unit 100 of the present invention can be used as a drive unit 100 for a dual-purpose juice extractor that crushes and squeezes ingredients such as vegetables and fruits using a screw that rotates at a low speed to produce juice, or a mixer that crushes and mixes ingredients using a rotary blade that rotates at a high speed.

[0067] Therefore, the driving device 100 of the present invention can be used as a juicer by mounting a juicing module 20 (see FIG. 11) including a screw on the driving device 100, and the rotation shaft of the screw receives power from an output shaft 130 that rotates at a low speed, or can be used as a mixer by mounting a mixer module 30 (see FIG. 12) including a rotary blade on the driving device 100, and the rotation shaft of the rotary blade receives power from an output shaft 130 that rotates at a high speed. In this case, the driving device 100 automatically detects that either the juicing module 20 or the mixer module 30 is mounted on the driving device 100, and the clutch vertical movement unit 160 can automatically move the clutch 110 up and down depending on the type of upper module mounted.

[0068] A driving device 100 for rotating a single output shaft 130 at high or low speed according to another embodiment of the present invention will now be described.

[0069] FIG. 7 is a perspective view of a drive device for rotating a single output shaft at high or low speed according to another embodiment of the present invention, FIG. 8 is a perspective view showing the internal configuration of FIG. 7, and FIGS. 9 and 10 are diagrams showing operation in low-speed mode and high-speed mode, respectively.

[0070] According to another embodiment of the present invention, a driving device 100 for rotating a single output shaft 130 at high or low speed may include a driving motor (not shown), a rotor shaft gear 120, an output shaft 130, an output shaft gear 140, and reduction gears 150, 155.

[0071] The rotor shaft gear 120, output shaft 130, output shaft gear 140, and reduction gears 150 and 155 constituting the drive unit 100 according to the present invention may be disposed inside the housing 180 as in the previously described embodiment, and the upper end of the output shaft 130 protrudes above the top of the housing 180 through an output shaft through-hole 182 in the top of the housing 180. In the drawings, the drive motor is disposed below the illustrated housing 180 (only the motor shaft 102 extending upward from the drive motor is shown inside the housing 180 in the drawings), but it may also be formed so as to be disposed inside the housing 180 together with the above-listed components. The drive motor may also be disposed inside a housing other than the illustrated housing 180, not shown.

[0072] The drive motor may be a rotary motor that generates power to rotate the output shaft 130 at high or low speed. In this embodiment, the drive motor may also be a motor that rotates only at high speed without speed adjustment.

[0073] The motor shaft 102 of the driving motor may be inserted into the housing 180 through a motor shaft through-hole 184 at the bottom of the housing 180. A bearing 185 may be interposed between the motor shaft through-hole 184 and the motor shaft 102.

[0074] A rotor shaft top gear 105 may be formed on the upper end of the motor shaft 102. The rotor shaft top gear 105 is engaged with or disengaged from the output shaft 130 when the output shaft 130 moves up and down, and the rotor shaft top gear 105 can directly transmit or disengage the power of the motor shaft 102 to the output shaft 130. Therefore, a gear train (see 130a in FIG. 14) that is gear-engaged with the rotor shaft top gear 105 may be formed in the circumferential direction on the inner surface of the output shaft 130. The rotor shaft top gear 105 may be formed integrally with the motor shaft 102 or separately.

[0075] The rotor shaft gear 120 is inserted into the motor shaft 102 to rotate together with the motor shaft 102 and is elastically supported at the bottom so that it can move up and down along the motor shaft 102. To enable the rotor shaft gear 120 to move up and down along the motor shaft 102 and rotate together with the motor shaft 102, the inner surface of the insertion hole of the rotor shaft gear 120 may be formed as a square hole, and the outer surface of the motor shaft 102 may be formed as a corresponding square shaft. Alternatively, the inner surface of the insertion hole of the rotor shaft gear 120 and the outer surface of the motor shaft 102 may be gear-coupled by forming a gear train that is aligned vertically in the circumferential direction.

[0076] A spring 122 is interposed between the bottom surface of the rotor shaft gear 120 and the bearing 185, so that the rotor shaft gear 120 can be elastically supported. As will be described later, when the output shaft 130, which moves up and down from the top of the motor shaft 102, moves downward, the lower end of the output shaft 130 comes into contact with the upper end of the rotor shaft gear 120, and the rotor shaft gear 120 can move downward along the motor shaft 102. At this time, an elastic force can be stored in the spring 122 that supports the lower side of the rotor shaft gear 120. In addition, when the output shaft 130 moves upward, the rotor shaft gear 120 can return to its upward position due to the elastic force of the spring 122.

[0077] The upper end of the output shaft 130 protrudes from the upper part of the housing 180, and a rotating shaft of a rotation mechanism to which the rotational force of the output shaft 130 is transmitted may be coupled to the upper end of the output shaft 130. In this case, as shown in the figure, an output shaft pulley 135 may be coupled to the upper end of the output shaft 130. A coupling groove 136 may be formed at the upper end of the output shaft pulley 135, and a rotating shaft of a rotation mechanism that transmits power to the output shaft 130 and rotates may be inserted into the coupling groove 136. The rotating mechanism may be, for example, a rotary blade 320 of the mixer module 30 (see FIG. 12) or a screw 230 of the juicing module 20 (see FIG. 11).

[0078] When an upper module including a rotation mechanism that rotates by receiving power from the output shaft 130 is coupled to the main body 10 including the driving device 100, the rotation shafts 232 and 322 of the rotation mechanism are coupled to the coupling groove 136 of the output shaft pulley 135, and the rotation shafts 232 and 322 of the rotation mechanism press the output shaft pulley 135 to move the output shaft 130 coupled to the output shaft pulley 135 downward. That is, the output shaft pulley 135 is pressed according to the lower end positions of the rotation shafts 232 and 322 of the rotation mechanism included in the upper module coupled to the top of the driving device 100, and the range of downward movement of the output shaft 130 can be controlled to vary.

[0079] As the output shaft 130 moves up and down due to the mounted upper module, the rotor shaft gear 120 in contact with the lower end of the output shaft 130 can move up and down along the motor shaft 102 .

[0080] The output shaft gear 140 can be inserted into the output shaft 130 to rotate. At this time, the hollow of the output shaft gear 140 into which the output shaft 130 is inserted may have a lower end with a larger diameter than the upper end, forming a step. As shown in FIG. 9, the upper end of the hollow may be formed with an output shaft coupling part 144 that couples with a middle part of the output shaft 130 when the output shaft 130 moves upward. An intermediate coupling part 132 may be formed at a predetermined position in the middle part of the output shaft 130, and a gear train that is linearly aligned vertically along the circumferential direction may be formed on the outer surface of the intermediate coupling part 132 and the inner surface of the output shaft coupling part 144, so that the intermediate coupling part 132 of the output shaft 130 can be inserted into and coupled with the output shaft coupling part 144 of the output shaft gear 140 through gear coupling. As shown in FIG. 10, when the output shaft 130 moves downward, the intermediate coupling part 132 is positioned at the lower end of the hollow, and the coupling between the output shaft 130 and the output shaft gear 140 may be released. On the other hand, when the output shaft 130 moves upward (see FIG. 9), the intermediate coupling part 132 moves upward and is inserted into and coupled with the output shaft coupling part 144, thereby transmitting the rotational force of the output shaft gear 140 to the output shaft 130. The output shaft gear 140 is decelerated by the reduction gears 150 and 155 and can rotate at a low speed, so that the output shaft 130 coupled to the output shaft gear 140 rotates at a low speed.

[0081] A bearing 187 may be interposed between the output shaft gear 140 and the output shaft 130. As shown in the figure, the output shaft gear 140 may have a gear train coupled with the reduction gears 150 and 155 formed on its upper outer periphery and a hollow extending downward, and the bearing 187 may be interposed inside the lower end of the output shaft gear 140. In addition, the output shaft 130 may be elastically supported by a spring 138 interposed between the bearing 187 and the intermediate jaw 131 of the output shaft 130 inside the hollow of the output shaft gear 140. The output shaft 130 may be moved downward by an upper module seated on the upper part of the driving device 100, and at this time, an elastic force may be stored in the spring 138. At this time, the output shaft 130 may be returned to its upward position by the elastic force stored in the spring 138.

[0082] The reduction gears 150 and 155 are gear-coupled between the rotor shaft gear 120 and the output shaft gear 140 and coupled to the motor shaft 102, and can reduce the rotational speed of the output shaft gear 140 compared to the rotor shaft gear 120 which rotates together.

[0083] In order to adjust the reduction ratio as needed, the reduction gears 150, 155 may be formed of a plurality of reduction gears 150, 155. In this embodiment, the rotation speed of the motor shaft 102 can be reduced by the two reduction gears 150, 155, i.e., the first reduction gear 150 and the second reduction gear 155.

[0084] The configuration of the reduction gear consisting of the first reduction gear 150 and the second reduction gear 155 is the same as that of the above-described embodiment, and therefore a detailed description thereof will be omitted.

[0085] Hereinafter, the operation of the output shaft 130 in the low speed mode and the high speed mode will be described with reference to FIGS.

[0086] In this embodiment, when the output shaft 130 is positioned at an upper position, the output shaft 130 can rotate in a low-speed mode, and when the output shaft 130 is positioned at a lower position, the output shaft 130 can rotate in a high-speed mode. More specifically, when the upper module is not connected to the driving device 100, the output shaft 130 is positioned at the uppermost position due to the elastic force of the spring 138. When the upper module is connected to the driving device 100, the rotating shafts 232 and 322 of the rotation mechanism press the output shaft pulley 135, causing the output shaft connected to the output shaft pulley 135 to move downward. The range by which the output shaft 130 moves downward is controlled to vary depending on the lower end positions of the rotating shafts 232 and 322 of the rotation mechanism. In the low-speed mode, the distance by which the output shaft 130 moves downward to an upper position may be small compared to the high-speed mode, and in the high-speed mode, the distance by which the output shaft 130 moves downward to a lower position may be large compared to the low-speed mode.

[0087] First, as shown in Fig. 9, in the low-speed mode, the output shaft 130 is positioned in an upper position. At this time, the range of vertical movement of the output shaft 130 can be controlled according to the position of the lower end of the rotation shaft 232 of the rotation mechanism included in the upper module seated on the top of the driving device 100. When the rotation shaft 232 of the rotation mechanism is inserted into and coupled to a coupling groove 136 formed on the upper part of the output shaft pulley 135 coupled to the upper end of the output shaft 130, pressure is applied to the output shaft 130, thereby moving the output shaft 130, which is elastically supported by the spring 138, downward. As shown in Fig. 9, the length over which the rotation shaft of the rotation mechanism presses the output shaft pulley 135 is relatively short, so that the output shaft 130 can be positioned in an upper position due to the elastic force of the spring 138.

[0088] When the output shaft 130 is positioned at the upper side, the lower end of the output shaft 130 may be disengaged from the rotor shaft top gear 105. At this time, when the rotor shaft gear 120, which is in contact with and elastically supported by the lower end of the output shaft 130, moves downward by the output shaft 130, the gear engagement between the rotor shaft gear 120 and the reduction gears 150 and 155 is released, or when the output shaft 130 is positioned at the upper side, the rotor shaft gear 120 moves upward along the motor shaft 102 due to the elastic force of the spring 122, so that the gear engagement between the rotor shaft gear 120 and the second gear train 152 of the first reduction gear 150 may be established.

[0089] In addition, when the output shaft 130 is positioned on the upper side, the intermediate coupling portion 132 of the output shaft 130 is inserted into and coupled with the output shaft coupling portion 144 of the output shaft gear 140, so that the rotational force of the output shaft gear 140 can be transmitted to the output shaft 130.

[0090] When the output shaft 130 is positioned in the upper position, the engagement between the rotor shaft top gear 105 and the lower end of the output shaft 130 is released, and the rotational force of the motor shaft 102 cannot be directly transmitted to the output shaft 130, but can be transmitted to the reduction gears 150 and 155. The first reduction gear 150 and the second reduction gear 155 allow the output shaft gear 140 to rotate at a reduced speed compared to the motor shaft 102. The rotation of the output shaft gear 140 is transmitted to the output shaft 130 coupled to the output shaft gear 140, and the output shaft 130 can rotate at a reduced rotational speed at the same speed as the output shaft gear 140.

[0091] Conversely, as shown in Fig. 10, in the high-speed mode, the output shaft 130 is moved downward compared to the low-speed mode. Compared to the case of Fig. 9, the length over which the rotating shaft 322 of the rotating mechanism included in the upper module mounted on the driving device 100 presses the output shaft pulley 135 is relatively longer, so that the output shaft 130 can be positioned lower compared to the low-speed mode. At this time, the elastic force of the spring 138 supporting the output shaft 130 can be maintained.

[0092] 10, when the output shaft 130 moves downward, the lower end of the output shaft 130 is coupled with the rotor shaft top gear 105, so that the rotational force of the motor shaft 102 can be directly transmitted to the output shaft 130. At this time, the rotor shaft gear 120, which is elastically supported in contact with the lower end of the output shaft 130, moves downward by the output shaft 130, so that the gear coupling between the rotor shaft gear 120 and the reduction gears 150 and 155 can be released.

[0093] Furthermore, as the output shaft 130 moves downward, the connection between the output shaft connecting portion 144 of the output shaft gear 140 and the intermediate connecting portion 132 of the output shaft 130 is released and the output shaft 130 rotates, but the rotational force is not transmitted to the output shaft gear 140 and the output shaft gear 140 does not rotate.

[0094] In this way, as the output shaft 130 moves downward, the rotor shaft top gear 105 and the lower end of the output shaft 130 are coupled together, allowing the rotational force of the motor shaft 102 to be directly transmitted to the output shaft 130. At this time, the gear coupling between the rotor shaft gear 120 and the reduction gears 150 and 155 is released, and the coupling between the output shaft 130 and the output shaft gear 140 is released, so that the reduction gears 150 and 155 and the output shaft gear 140 do not rotate.

[0095] Figure 11 shows a juice extractor that can also be used as a mixer according to one embodiment of the present invention when used as a juice extractor, and Figure 12 shows a juice extractor that can also be used as a mixer according to one embodiment of the present invention when used as a mixer.

[0096] As shown in Fig. 11, when the juicer that can also be used as a mixer according to the present invention is used as a juicer, a juicing module 20 including a juicing drum 210, a drum 220, a screw 230, and a hopper 240 can be attached to a main body including the drive device 100. The juicing module 20 that constitutes the juicer can be modified into various known forms in addition to the illustrated form, and the detailed configuration of the juicing module 20 is known, so a detailed description thereof will be omitted.

[0097] Furthermore, as shown in Fig. 12, when the juice extracting juicer that can also be used as a mixer according to the present invention is used as a mixer, a mixer module 30 including a mixer drum 310 with a rotary blade 320 attached thereto can be attached to the same main body 10 shown in Fig. 11 to be used as a mixer. A mixer is known as a device that crushes and mixes food ingredients put into the mixer drum 310 by the rotary blade 320 that rotates at high speed at the bottom end of the mixer drum 310, but the meaning of "mixer" in the present invention can be broadly interpreted as a device used for processing food ingredients by using the rotary blade 320 that rotates at high speed.

[0098] 11 and 12 show the driving device 100 of the embodiment described above with reference to FIGS. 7 to 10. An output shaft 130 is formed to protrude upward from the top of the main body 10, and an output shaft pulley 135 is formed at the upper end of the output shaft 130. As shown in FIG. 11, when the juicing module 20 is mounted on the main body 10, the lower rotation shaft 232 of the screw is inserted into and coupled to the coupling groove 136 of the output shaft pulley 135. As shown in FIG. 12, when the mixer module 30 is mounted on the main body 10, the lower rotation shaft 322 of the rotary blade 320 is inserted into and coupled to the coupling groove 136 of the output shaft pulley 135. At this time, depending on the difference in pressure length between the rotation shaft 232 of the screw and the rotation shaft 322 of the rotary blade, the rotation shafts 232, 322 press against the output shaft pulley 135, and the range of downward movement of the output shaft 130 can be changed.

[0099] As described above, when the rotary shaft 322 of the rotary blade 320 is coupled to the output shaft pulley 135 and moves the output shaft 130 downward, the driving device 100 can operate in high-speed mode, and when the rotary shaft 232 of the screw 230 is coupled to the output shaft pulley 135 and moves the output shaft 130 downward, positioning it relatively at an upper position, the driving device 100 can operate in low-speed mode.

[0100] In the following description, various variations of the above-described embodiment are described.

[0101] FIG. 13 shows the engagement between an output shaft and an output shaft gear according to another embodiment of the present invention. In this invention, the term "gear" does not refer only to a conventional gear (such as a spur gear or a helical gear) with closely spaced gear teeth formed in the circumferential direction. While a spur gear or a helical gear may be used, a gear may simply have a few key protrusions and / or key grooves formed in the circumferential direction as long as it can transmit power. In the illustrated example, four key protrusions 132a are formed at equal intervals along the circumferential direction and protrude radially outward from the intermediate coupling portion 132. Correspondingly, four key grooves 144a are formed at equal intervals along the circumferential direction and protrude radially inward from the output shaft coupling portion 144. Alternatively, key grooves may be formed in the intermediate coupling portion 132, and corresponding key protrusions may be formed in the output shaft coupling portion 144.

[0102] 14 shows a drive device according to another embodiment of the present invention. In the following, the same content as that described above will be omitted, and only the content presented in this embodiment that is different from the above will be described.

[0103] In a power transmission structure connecting the motor shaft 102, output shaft gear 140, and output shaft 130, it is important to maintain a firm support state for each component during high-speed rotation. To this end, in this embodiment, two bearings located at the upper inside portion of the housing 180 are arranged so that they overlap laterally. In the illustrated embodiment, the bearings are designated by reference numerals "186a" and "186b." These two bearings 186a and 186b are arranged to firmly support the output shaft 130 and output shaft gear 140 from the inside and outside. In particular, because the bearings 186a and 186b are arranged so that they overlap laterally, this has the effect of reducing the internal space of the housing 180 while still providing a firm support effect.

[0104] Furthermore, a fixed base 180a formed integrally with the housing 180 is placed inside the housing 180, and a bearing 187a is installed on the fixed base 180a to firmly support the lower part of the output shaft gear 140. Furthermore, a bearing 187b is further installed on the fixed base 180a to support the upper part of the motor shaft 102. Figure 14 shows an example in which two steps are placed inside the fixed base 180a, and bearings 187a and 187b are installed on the upper and lower steps, respectively.

[0105] FIG. 15 is an enlarged view of a main part of FIG. 14, showing the state in which the gear teeth 120a of the rotor shaft gear 120 and the gear teeth 152a of the second gear train 152 are meshed with each other.

[0106] In the present invention, the output shaft 130 and the rotor shaft top gear 105 are coupled through a gear train formed on the radially outer surface of the rotor shaft top gear 105 and a gear train 130a (see FIG. 14) formed on the inner surface of the output shaft 130, thereby directly transmitting the power of the motor shaft 102 to the output shaft 130. However, when the output shaft 130 descends, the gear train 130a on the inner side of the output shaft 130 moves axially, and the gear trains of the rotor shaft top gear 105 are inserted into each other to perform gear coupling, so it is better to align them in a fixed position circumferentially. Therefore, in this embodiment, as shown in the figure, a plurality of output shaft coupling guides 130b are formed axially along the circumferential direction on the bottom of the output shaft 130, and corresponding motor shaft coupling guides are formed axially along the circumferential direction on the top of the rotor shaft gear 120. As a result, as the output shaft 130 descends, the output shaft coupling guide 130b and the motor shaft coupling guide 120b slide against each other, aligning the inner gear train 130a of the output shaft 130 with the outer gear train of the rotor shaft top gear 105 in a fixed position in the circumferential direction, allowing the two gear trains to be easily coupled together as the output shaft 130 descends. In the illustrated example, the output shaft coupling guide 130b and the motor shaft coupling guide 120b rotate in the circumferential direction, forming multiple peaks and valleys that protrude in the axial direction. The valleys adjacent to the peaks are recessed in the axial direction. The peaks and valleys formed on the output shaft coupling guide 130b and the motor shaft coupling guide 120b, respectively, have corresponding shapes and face each other. As a result, when the output shaft 130 descends and comes into contact with the motor shaft coupling guide 120b, the peaks and valleys slide against each other, allowing the output shaft 130 and the motor shaft 102 to be naturally coupled together.

[0107] This structure in which peaks and valleys are formed and in contact with each other can be similarly applied to the coupling structure between the motor shaft coupling part 112 and the rotor shaft top gear 105. In this case, although not shown in detail, a clutch coupling guide may be formed in the same manner as above, with peaks and valleys formed in the axial direction along the circumferential direction at the bottom of the clutch 110, and a motor shaft coupling guide may be formed in the same manner, with peaks and valleys formed in the axial direction along the circumferential direction at the top of the rotor shaft gear 120.

[0108] Meanwhile, in the illustrated embodiment, the gear teeth 120a of the rotor shaft gear 120 and the gear teeth 152a of the second gear train 152 are spur gear teeth with a uniform cross section in the axial direction. However, when a large torque is transmitted from the drive motor (not shown) to the motor shaft 102, the concentricity of the motor shaft 102 may be lost, causing the motor shaft 102 to tilt sideways or be pushed by the second gear train 152. To prevent this, the gear teeth 120a of the motor shaft and the gear teeth 152a of the second gear train 152 may be slightly inclined in opposite directions, such as helical gears. Inclining the two meshing gear teeth 120a, 152a in the axial direction, i.e., by approximately 5° at most, with respect to the axis, may prevent this problem.

[0109] The scope of the present invention is not limited to the above-described examples, but may be embodied in various forms within the scope of the appended claims. Any modification that can be made by a person skilled in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims is deemed to be within the scope of the claims of the present invention.

Claims

1. Drive motor, a clutch that is coupled to a rotor shaft top gear formed on the motor shaft of the drive motor and rotates together with the motor shaft when the drive motor moves downward; an output shaft whose lower end is connected to the upper end of the clutch and rotates together with the clutch; an output shaft gear that is engaged with the clutch and rotates together with the clutch when the output shaft is inserted and rotates, and the clutch moves upward; a rotor shaft gear that is inserted into the motor shaft, rotates together with the motor shaft, is elastically supported, and contacts the clutch when the clutch moves downward; and a reduction gear coupled between the rotor shaft gear and the output shaft gear to reduce the rotation speed of the output shaft gear relative to the rotation speed of the motor shaft; When the clutch moves downward, the rotor shaft top gear and the clutch are engaged, the gear engagement between the rotor shaft gear and the reduction gear is released, and the engagement between the output shaft gear and the clutch is released, so that the high-speed rotation of the motor shaft is transmitted to the clutch and the output shaft, causing the output shaft to rotate at high speed; When the clutch moves upward, the rotor shaft top gear and the clutch are disengaged, the rotor shaft gear and the reduction gear are engaged, the output shaft gear and the clutch are engaged, the high-speed rotation of the motor shaft is reduced by the reduction gear to rotate the output shaft gear, and the rotation of the output shaft gear is transmitted to the clutch and the output shaft to rotate the output shaft at a slower speed than the motor shaft.

2. 2. The driving device for rotating a single output shaft at high or low speed according to claim 1, further comprising a clutch vertical movement unit for moving the clutch vertically.

3. The clutch vertical movement portion is a clutch case coupled to the clutch; and 3. The driving device for rotating a single output shaft at high or low speed according to claim 2, further comprising a vertical driving unit connected to one side of the clutch case for moving the clutch case up and down.

4. 2. The driving device for rotating a single output shaft at high or low speed according to claim 1, further comprising a spring for elastically supporting a lower side of the rotor shaft gear.

5. 2. The driving device for rotating a single output shaft at high or low speed according to claim 1, further comprising a bearing interposed between the output shaft and the output shaft gear.

6. a housing that accommodates the drive motor, the clutch, the output shaft gear, the rotor shaft gear, and the reduction gear therein; 2. The driving device for rotating a single output shaft at high or low speed according to claim 1, wherein an upper end of the output shaft protrudes above the housing.

7. 2. The driving device for rotating a single output shaft at a high or low speed according to claim 1, wherein the reduction gear includes a first reduction gear geared to the rotor shaft gear and a second reduction gear geared between the first reduction gear and the output shaft gear.

8. the first reduction gear and the second reduction gear are formed in two stages, with a first gear train formed on a circumference with a small radius and a second gear train formed on a circumference with a large radius, 8. The driving device for rotating a single output shaft at high or low speed according to claim 7, wherein the second gear train of the first reduction gear is gear-engaged with the rotor shaft gear to rotate at a reduced speed, the second gear train of the second reduction gear is gear-engaged with the first gear train of the first reduction gear to rotate at a reduced speed, and the output shaft gear is gear-engaged with the first gear train of the second reduction gear to rotate at a reduced speed.

9. Drive motor, a rotor shaft gear into which the motor shaft of the drive motor is inserted and which rotates together with the motor shaft and is elastically supported to move up and down; an output shaft coupled to a rotor shaft top gear formed on the motor shaft and rotating together with the motor shaft when the output shaft moves downward from the upper portion of the motor shaft; an output shaft gear that is inserted and rotates the output shaft, and that is coupled with the output shaft to rotate the output shaft together when the output shaft moves upward; and a reduction gear coupled between the rotor shaft gear and the output shaft gear to reduce the rotation speed of the output shaft gear relative to the rotation speed of the motor shaft; When the output shaft moves downward, the output shaft is engaged with the rotor shaft top gear, the gear engagement between the rotor shaft gear and the reduction gear is released, and the engagement between the output shaft and the output shaft gear is released, so that the high-speed rotation of the motor shaft is transmitted to the output shaft, causing the output shaft to rotate at high speed; When the output shaft moves upward, the output shaft is disengaged from the rotor shaft top gear, the rotor shaft gear is gear-engaged with the reduction gear, and the output shaft is engaged with the output shaft gear, so that the high-speed rotation of the motor shaft is reduced by the reduction gear to rotate the output shaft gear, and the rotation of the output shaft gear is transmitted to the output shaft to rotate the output shaft at a slower speed than the motor shaft.

10. an upper module accommodating a rotation mechanism that receives power from the output shaft and rotates therein is coupled to the drive device, and the upper module further includes an output shaft pulley coupled to an upper end of the output shaft, to which a rotation shaft of the rotation mechanism is coupled when the upper module is coupled to the drive device; 10. The drive device for rotating a single output shaft at high or low speed according to claim 9, wherein the rotating shaft presses the output shaft pulley to move the output shaft downward.

11. 11. The drive device for rotating a single output shaft at high or low speed according to claim 10, wherein the hollow of the output shaft gear into which the output shaft is inserted has a lower end with a larger diameter than the upper end, forming a step, and the upper end of the hollow has an output shaft coupling portion into which an intermediate coupling portion formed at an intermediate portion of the output shaft is inserted and coupled when the output shaft moves upward.

12. a gear train is formed on an outer surface of the intermediate coupling portion and an inner surface of the output shaft coupling portion; 12. The drive device for rotating a single output shaft at high or low speeds according to claim 11, wherein a key protrusion or a key groove is formed on an outer surface of the intermediate coupling portion, and a key groove corresponding to the key protrusion formed on the outer surface of the intermediate coupling portion or a key protrusion corresponding to the key groove formed on the outer surface of the intermediate coupling portion is formed on the output shaft coupling portion.

13. 10. The driving device for rotating a single output shaft at high or low speed according to claim 9, further comprising a spring for elastically supporting a lower side of the rotor shaft gear.

14. 10. The driving device for rotating a single output shaft at high or low speed according to claim 9, further comprising a bearing interposed between the output shaft and the output shaft gear.

15. The bearing is disposed inside or outside the lower end of the output shaft gear, 15. The driving device for rotating a single output shaft at high or low speed according to claim 14, further comprising a spring interposed between the bearing and a stepped portion formed at an intermediate portion of the output shaft inside the output shaft gear to elastically support the output shaft.

16. a housing that accommodates the drive motor, the output shaft gear, the rotor shaft gear, and the reduction gear therein; 10. The driving device for rotating a single output shaft at high or low speed according to claim 9, wherein an upper end of the output shaft protrudes above the housing.

17. 10. The driving device for rotating a single output shaft at a high or low speed according to claim 9, wherein the reduction gear includes a first reduction gear geared to the rotor shaft gear and a second reduction gear geared between the first reduction gear and the output shaft gear.

18. the first reduction gear and the second reduction gear are formed in two stages, with a first gear train formed on a circumference with a small radius and a second gear train formed on a circumference with a large radius, 18. The driving device for rotating a single output shaft at high or low speed according to claim 17, wherein the second gear train of the first reduction gear is gear-engaged with the rotor shaft gear to rotate at a reduced speed, the second gear train of the second reduction gear is gear-engaged with the first gear train of the first reduction gear to rotate at a reduced speed, and the output shaft gear is gear-engaged with the first gear train of the second reduction gear to rotate at a reduced speed.

19. A motor shaft coupling guide is formed on the upper part of the rotor shaft gear, and has peaks and valleys formed in the axial direction and the circumferential direction.

10. The driving device for rotating a single output shaft at high or low speed according to claim 9, wherein an output shaft coupling guide having ridges and valleys formed in the axial direction and circumferential direction corresponding to the motor shaft coupling guide is formed at a lower portion of the output shaft.

20. 10. The driving device for rotating a single output shaft at high or low speed according to claim 9, wherein the gear teeth of the rotor shaft gear and the gear teeth of the reduction gear gear geared to the rotor shaft gear are inclined with respect to the axial direction.

21. 21. The driving device for rotating a single output shaft at high or low speed according to claim 20, wherein the angle of inclination between the gear teeth of the rotor shaft gear and the gear teeth of the reduction gear gear geared to the rotor shaft gear is within 5° with respect to the axial direction.

22. A drive device according to any one of claims 1 to 21. a mixer module including a rotary blade that receives power from the output shaft and rotates at high speed, the mixer module being attached to an upper portion of the drive unit; and The juicer includes a screw that rotates at a low speed by receiving power from the output shaft, and a juice extracting module that is attached to the upper part of the driving device in exchange for the mixer module, and can also be used as a mixer.

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