A drive device that rotates a single output shaft at high or low speed and a juicer that can also be used as a mixer using said 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 driving device for rotating a single output shaft at high speed or low speed, and a juicer that can be used also as a mixer using the driving device. More specifically, the present invention relates to a driving device for rotating a single output shaft at high speed or low speed so that a juicer for generating squeezed juice by crushing and squeezing materials such as vegetables and fruits with a screw rotating at low speed and a mixer for crushing or mixing materials with a rotary blade rotating at high speed can both be used, and a juicer that can be used also as a mixer using the driving device.

Background Art

[0002] Generally, a mixer is a device that crushes and mixes food materials such as vegetables, fruits, and grains with a rotary blade (mixer blade) that rotates at high speed, and a juicer is a household device that makes juice by crushing and squeezing materials between a drum and a screw that rotates at low speed, using the principle of pressing and squeezing vegetables, fruits, etc. like grinding and squeezing beans in a mortar.

[0003] Since the operations of both devices for rotating the mixer blade or the screw with a motor are similar, a device that can be combined and used in a dual-purpose manner can be manufactured. However, there is a problem that the mixer blade must be rotated at high speed and the screw must be rotated at low speed.

[0004] Korean Registered Patent Publication No. 1994357 discloses a driving device that forms a high-speed shaft rotating at high speed and a low-speed shaft rotating at low speed as a dual shaft and can be used in a dual-purpose manner for a mixer and a juicer. However, when forming the high-speed shaft and the low-speed shaft as a dual shaft, problems such as noise and waterproofing due to interference between the two shafts may occur.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The object of the present invention is to solve the conventional problems, and to rotate a single output shaft at high speed or low speed using a single motor that rotates at high speed, so that a juicer or a mixer can be used together. An object of the present invention is to provide a drive device for rotating a single output shaft at high speed or low speed and a juicer that can be used also as a mixer using the drive device.

[0006] The problems to be solved by the present invention are not limited to the problems 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 Problems

[0007] The above object is achieved by the present invention, which includes a 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 moving downward while 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 and rotates with the output shaft 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 to reduce the rotational speed of the output shaft gear compared to the rotational speed of the motor shaft. When the clutch moves downward, the rotor shaft top gear and the clutch are coupled, the gear coupling between the rotor shaft gear and the reduction gear is released, and the coupling between the output shaft gear and the clutch is released, and the high-speed rotation of the motor shaft is transmitted to the clutch and the output shaft to rotate the output shaft at high speed. When the clutch moves upward, the coupling between the rotor shaft top gear and the clutch is released, the rotor shaft gear and the reduction gear are gear-coupled, the output shaft gear and the clutch are coupled, and the high-speed rotation of the motor shaft is decelerated 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 speed lower than that of the motor shaft. This can be achieved by a drive device for rotating a single output shaft at high speed or low speed.

[0008] Here, it can further include a clutch vertical movement part for moving the clutch up and down.

[0009] Here, the clutch vertical movement part can include a clutch case coupled to the clutch and an up-down drive part connected to one side of the clutch case for moving the clutch case up and down.

[0010] Here, a spring for elastically supporting the lower side of the rotor shaft gear can be further included.

[0011] Here, a bearing interposed between the output shaft and the output shaft gear can be further included.

[0012] Here, a housing for accommodating the drive motor, the clutch, the output shaft gear, the rotor shaft gear, and the reduction gear inside is further included, and the upper end portion of the output shaft can protrude above the housing.

[0013] Here, the reduction gear can include a first reduction gear that is gear-coupled to the rotor shaft gear and a second reduction gear that is gear-coupled between the first reduction gear and the output shaft gear.

[0014] Here, the first reduction gear and the second reduction gear are formed in two stages by a first gear row formed on a circumference with a small radius and a second gear row formed on a circumference with a large radius. The second gear row of the first reduction gear is gear-coupled to the rotor shaft gear and rotates at a reduced speed. The second gear row of the second reduction gear is gear-coupled to the first gear row of the first reduction gear and rotates at a reduced speed. The output shaft gear can be gear-coupled to the first gear row of the second reduction gear and rotate at a reduced speed.

[0015] Also, the above object can be achieved by a driving device according to the present invention, which includes a drive motor, a rotor shaft gear inserted into the motor shaft of the drive motor and rotating together with the motor shaft, being elastically supported and moving up and down, an output shaft that moves up and down from the upper part of the motor shaft and is coupled to a rotor shaft top gear formed on the motor shaft when moving downward, rotating together with the motor shaft, and moving the rotor shaft gear downward, an output shaft gear inserted into and rotating with the output shaft, and being coupled to the output shaft to rotate the output shaft together when the output shaft moves upward, and a reduction gear gear-coupled between the rotor shaft gear and the output shaft gear to reduce the rotation speed of the output shaft gear compared to the rotation speed of the motor shaft. When the output shaft moves downward, the output shaft is coupled to the rotor shaft top gear, the gear coupling between the rotor shaft gear and the reduction gear is released, the coupling between the output shaft and the output shaft gear is released, the high-speed rotation of the motor shaft is transmitted to the output shaft to rotate the output shaft at high speed. When the output shaft moves upward, the output shaft is released from the coupling with the rotor shaft top gear, the rotor shaft gear and the reduction gear are gear-coupled, the output shaft and the output shaft gear are coupled, the high-speed rotation of the motor shaft is decelerated 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 lower than that of the motor shaft.

[0016] Here, when an upper module that houses a rotation mechanism that rotates by receiving power from the output shaft is coupled above the driving device, it 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 can press 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 stepped structure where the diameter of the lower end portion is larger than that of the upper end portion. When the output shaft moves upward, an output shaft coupling portion can be formed at the upper end of the hollow, into which an intermediate coupling portion formed at the intermediate portion of the output shaft is inserted and coupled.

[0018] Here, gear rows can 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 a key groove can be formed on the 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 can be formed on the output shaft coupling portion.

[0019] Here, a spring for elastically supporting the lower side of the rotor shaft gear can be further included.

[0020] Here, a bearing interposed between the output shaft and the output shaft gear can be further included.

[0021] Here, the bearing can be interposed inside or outside the lower end portion of the output shaft gear, and a spring for elastically supporting the output shaft can be further included, which is interposed between the bearing and a stepped jaw formed at the intermediate portion of the output shaft inside the output shaft gear.

[0022] Here, a housing for accommodating the drive motor, the output shaft gear, the rotor shaft gear, and the reduction gear inside can be further included, and the upper end portion of the output shaft can protrude from the upper portion of the housing.

[0023] Here, the reduction gear can include a first reduction gear that is gear-coupled to the rotor shaft gear and a second reduction gear that is gear-coupled between the first reduction gear and the output shaft gear.

[0024] Here, the first reduction gear and the second reduction gear are formed in two stages by 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. The second gear train of the first reduction gear is gear-coupled with the rotor shaft gear and rotates at a reduced speed. The second gear train of the second reduction gear is gear-coupled with the first gear train of the first reduction gear and rotates at a reduced speed. The output shaft gear can be gear-coupled with the first gear train of the second reduction gear and rotate at a reduced speed.

[0025] Here, a motor shaft coupling guide with ridges and valleys formed axially along the circumferential direction is formed on the upper part of the rotor shaft gear, and an output shaft coupling guide with ridges and valleys formed axially along the circumferential direction can be formed on the lower part of the output shaft so as to correspond to the motor shaft coupling guide.

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

[0027] Here, it is preferable that the angle by which the gear teeth of the rotor shaft gear and the gear teeth of the reduction gear gear-coupled with the rotor shaft gear are inclined with respect to the axial direction is within 5°.

[0028] Further, the object can be achieved by a juicer that can also be used as a mixer, which includes any one of the drive devices described above according to the present invention, a mixer module attached to the upper part of the drive device and including a rotary blade that rotates at high speed with power transmitted from the output shaft, and a screw that rotates at low speed with power transmitted from the output shaft, and a juice extraction module that is attached by exchanging with the mixer module at the upper part of the drive device.

Advantages of the Invention

[0029] According to the present invention as described above, since high speed or low speed is realized with a single output shaft, there is an advantage that noise and waterproof problems generated when high speed and low speed are realized with a conventional double shaft can be solved.

[0030] In addition, there is also an advantage that a drive device can be configured to drive an output shaft at high speed or low speed using a motor that rotates at high speed, and can be used as both a mixer and a juicer.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiment for Carrying out the Invention

[0032] Specific matters of the embodiments are included in the detailed description and the drawings.

[0033] The advantages, features, and the method for achieving them of the present invention will become clear by referring to the embodiments described in detail below together with the attached drawings. However, the present invention is not limited to the embodiments disclosed below, and can be embodied in various different forms. Merely, the present embodiments are provided so that the disclosure of the present invention is complete and that those having ordinary knowledge in the technical field to which the present invention pertains can fully know the scope of the invention.

[0034] The same reference numerals throughout the specification refer to the same components.

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

[0036] FIG. 1 is a perspective view of a drive device for rotating a single output shaft at high speed or low speed according to an embodiment of the present invention, FIG. 2 is a perspective view showing the internal configuration of FIG. 1, FIGS. 3 and 4 are views showing the coupling structure in a state where the clutch has moved to the upper side and the lower side, respectively, in FIG. 2, and FIGS. 5 and 6 are views showing the operations in the low-speed mode and the high-speed mode, respectively.

[0037] A drive device 100 for rotating a single output shaft at high speed or low speed according to an embodiment of the present invention can be configured to include a drive 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, reduction gears 150, 155 constituting the drive device 100 according to the present invention can be arranged inside the housing 180. The upper end of the output shaft 130 protrudes above the upper part of the housing 180 through the output shaft through hole 182 in the upper part of the housing 180. In the drawing, the drive motor is arranged below the illustrated housing 180 (only the motor shaft 102 extending upward from the drive motor is shown inside the housing 180 in the drawing), but it can also be formed to be arranged inside the housing 180 together with the above-mentioned components. Further, the drive motor can also be arranged inside another housing (not shown) other than the illustrated housing 180.

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

[0040] The motor shaft 102 of the drive motor can be inserted into the housing 180 through the motor shaft through hole 184 in the lower part of the housing 180. At this time, a bearing 185 can be interposed between the motor shaft through hole 184 and the motor shaft 102.

[0041] A rotor shaft top gear 105 can be formed at the upper end of the motor shaft 102. When the clutch 110 moves up and down, the rotor shaft top gear 105 can be coupled to or decoupled from the clutch 110, and the rotational force of the motor shaft 102 can be directly transmitted to or the direct transmission can be released by the rotor shaft top gear 105. The rotor shaft top gear 105 can be integrally formed with or separately formed from the motor shaft 102.

[0042] The rotor shaft gear 120 is inserted into the motor shaft 102 and rotates together with the motor shaft 102. It is elastically supported at the lower part and can move up and down along the motor shaft 102. In order for the rotor shaft gear 120 to rotate together with the motor shaft 102 while moving up and down along the motor shaft 102, the inner surface of the insertion hole of the rotor shaft gear 120 is formed as a square hole, and the outer surface of the motor shaft 102 can be formed as a corresponding square shaft. Or, the inner surface of the insertion hole of the rotor shaft gear 120 and the outer surface of the motor shaft 102 can also be gear-coupled with a gear row that is vertically straight in the circumferential direction.

[0043] A spring 122 can be interposed between the bottom surface of the rotor shaft gear 120 and the bearing 185 so that the rotor shaft gear 120 is elastically supported. As will be described later, when the clutch 110 that moves up and down from the upper part of the motor shaft 102 moves downward, the lower end of the clutch 110 contacts 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, 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 upward by the elastic force of the spring 122.

[0044] The clutch 110 moves up and down. When the clutch 110 moves downward, it can be coupled to the motor shaft 102 and the power of the motor shaft 102 can be directly transmitted. When the clutch 110 moves upward, the coupling with the motor shaft 102 is released and direct power is not transmitted from the motor shaft 102. Instead, the rotational force of the motor shaft 102 can be transmitted through the reduction gears 150, 155 and the output shaft gear 140 described later.

[0045] The clutch 110 can be formed in a shaft shape with a hollow formed therein. An intermediate portion of the clutch 110 can be formed with a motor shaft coupling portion 112 into which the rotor shaft top gear 105 is inserted and coupled. The inner surface of the motor shaft coupling portion 112 and the outer surface of the rotor shaft top gear 105 can be formed with gear rows that are vertically aligned in the circumferential direction and can be gear-coupled so that when the clutch 110 moves downward and the rotor shaft top gear 105 is coupled to the motor shaft coupling portion 112, the rotational force of the motor shaft 102 can be transmitted to the clutch 110.

[0046] The hollow below the motor shaft coupling portion 112 can be formed with a larger diameter than the motor shaft coupling portion 112 to form a stepped jaw 111. As shown in FIG. 3, in a state where the clutch 110 has moved upward, the rotor shaft top gear 105 is positioned below the stepped jaw 111 and is not coupled to the clutch 110. Conversely, when the clutch 110 moves downward, as shown in FIG. 4, the rotor shaft top gear 105 is inserted into and coupled to the motor shaft coupling portion 112, whereby the rotational force of the motor shaft 102 can be directly transmitted to the clutch 110.

[0047] The upper end portion of the clutch 110 can be inserted into or the insertion can be released from a clutch coupling portion 142 formed at the lower end portion of an output shaft gear 140 described later. When the clutch 110 moves upward, the upper end portion 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 can be transmitted and the clutch 110 can rotate together with the output shaft gear 140. The outer surface of the upper end portion of the clutch 110 and the inner surface of the clutch coupling portion 142 can be formed with gear rows that are vertically aligned in the circumferential direction and can be gear-coupled so that when the upper end portion of the clutch 110 moves upward and is coupled to 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 can be inserted into and coupled to the hollow upper end of the clutch 110. At this time, although the insertion depth of the lower end of the output shaft 130 can vary depending on the vertical movement of the clutch 110, the connection between the clutch 110 and the output shaft 130 is not released. The inner surface of the upper end of the clutch 110 is formed with a square hole, and the outer surface of the lower end of the output shaft 130 can 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 can also be gear-coupled with a gear train formed in a vertically straight line in the circumferential direction.

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

[0050] The upper end of the output shaft 130 protrudes above the housing 180, and a rotating shaft of a rotating mechanism to which the rotational force of the output shaft 130 is transmitted can be coupled to the upper end thereof. The rotating mechanism can be a rotating blade of a mixer or a screw of a juicer, but is not necessarily limited thereto. The upper end of the output shaft 130 can be formed with a square shaft or a square hole so as to be coupled to the rotating shaft of the rotating mechanism and transmit power. For reference, a square shaft is shown in the drawing.

[0051] The lower end of the output shaft 130 is inserted into the hollow of the clutch 110. Or, it can be configured in the opposite way. That is, it can also be configured such that the upper end of the clutch 110 is inserted into the lower end of the output shaft 130. The insertion depth can vary with the vertical movement of the clutch 110. A bearing 186 can be interposed between the output shaft through hole 182 at the upper part of the housing 180 and the output shaft 130.

[0052] The output shaft gear 140 has a hollow formed therein and can be inserted into the output shaft 130 and rotate. When the clutch 110 moves upward, the clutch 110 can be coupled to the clutch coupling portion 142 at the lower end to transmit 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 decelerated by the reduction gears 150, 155 and rotate at a low speed. However, 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 to rotate 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 gear-coupled between the rotor shaft gear 120 and the output shaft gear 140 and are coupled to the motor shaft 102. Together with the rotation of the rotor shaft gear 120 coupled to the motor shaft 102, the rotational speed of the output shaft gear 140 can be reduced.

[0054] In order to adjust the reduction ratio as required, the reduction gears 150, 155 can also be formed by 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 rotational speed of the motor shaft 102 can be reduced by the two reduction gears 150, 155.

[0055] The first reduction gear 150 is gear-coupled between the rotor shaft gear 120 and the second reduction gear 155, and the second reduction gear 155 can be gear-coupled between the first reduction gear 150 and the output shaft gear 140. At this time, both the first reduction gear 150 and the second reduction gear 155 are composed of a first gear row 151, 156 formed on a smaller circumference and a second gear row 152, 157 formed on a larger circumference, and can be formed of a two-stage gear row. As shown in the figure, the second gear row 152 of the first reduction gear 150 can be gear-coupled to the rotor shaft gear 120. Therefore, according to the gear ratio between the rotor shaft gear 120 and the second gear row 152 of the first reduction gear 150, the first reduction gear 150 can rotate at a reduced speed compared to the rotor shaft gear 120. Also, the first gear row 151 of the first reduction gear 150 can be gear-coupled to the second gear row 157 of the second reduction gear 155. Therefore, due to the gear ratio between the first gear row 151 of the first reduction gear 150 and the second gear row 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. Also, the first gear row 156 of the second reduction gear 155 can be gear-coupled to the output shaft gear 140. Therefore, due to the gear ratio between the first gear row 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 can be rotatably supported and rotated inside the housing 180, respectively, and bearings 188 can 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, with reference to FIGS. 5 and 6, the operation in the low-speed mode and the operation in the high-speed mode of the output shaft 130 will be described.

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

[0059] First, as shown in FIG. 5, in the low-speed mode, the clutch vertical movement part 160 (not shown in FIGS. 5 and 6) moves the clutch 110 upward. More specifically, the clutch case 162 can be moved upward by the vertical drive part 164, and the clutch 110 coupled to the clutch case 162 can be moved upward.

[0060] Or, when the clutch vertical movement part 160 is not operating, it can be configured such that the rotor shaft gear 120 is pushed upward by the spring 122. That is, normally, the rotor shaft gear 120 is in an upwardly raised state by the spring 122. When the rotor shaft gear 120 is to be lowered, the clutch vertical movement part 160 can be operated so that the clutch 110 descends and the rotor shaft gear 120 descends downward while overcoming the compressive force of the spring 122.

[0061] When the clutch 110 moves upward, the upper end portion of the clutch 110 can 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 can be released (refer to FIG. 3). At this time, when the rotor shaft gear 120 that elastically supports in contact with the lower end of the clutch 110 moves 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 is released, or as the clutch 110 moves upward (refer to FIG. 5), the rotor shaft gear 120 moves upward along the motor shaft 102, and the rotor shaft gear 120 and the second gear row 152 of the first reduction gear 150 can be gear-coupled.

[0062] As the clutch 110 moves upward in this way, the connection between the rotor shaft top gear 105 and the motor shaft coupling portion 112 of the clutch 110 is disengaged, 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. Depending on the reduction ratios 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 can rotate at a speed reduced compared to the motor shaft 102 together with the output shaft gear 140.

[0063] Conversely, as shown in FIG. 6, in the high-speed mode, the clutch vertical movement section 160 moves the clutch 110 downward. More specifically, the vertical drive section 164 can move 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 connection between the upper end portion of the clutch 110 and the clutch coupling portion 142 of the output shaft gear 140 can be disengaged. At this time, the motor shaft coupling portion 112 and the rotor shaft top gear 105 at the upper end of the motor shaft 102 are coupled, and 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, and the gear connection between the rotor shaft gear 120 and the second gear row 152 of the first reduction gear 150 can be disengaged.

[0065] As the clutch 110 moves downward in this way, the space between the rotor shaft top gear 105 and the motor shaft coupling part 112 of the clutch 110 is coupled, the rotational force of the motor shaft 102 can be directly transmitted to the clutch 110, and the output shaft 130 coupled to the clutch 110 can be rotated at high speed. At this time, the gear coupling between the rotor shaft gear 120 and the reduction gears 150, 155 is released, the coupling between the upper end part of the clutch 110 and the clutch coupling part 142 of the output shaft gear 140 is released, and the rotational force of the motor shaft 102 is not transmitted to the reduction gears 150, 155 and the output shaft gear 140.

[0066] The drive device 100 according to the present invention can be used as a drive device 100 for a juicer that crushes and squeezes materials such as vegetables and fruits with a screw rotating at a low speed to generate squeezed juice or a mixer that crushes or mixes materials with a rotary blade rotating at a high speed.

[0067] Therefore, a juice extraction module 20 (refer to FIG. 11) including a screw is mounted on the drive device 100 of the present invention, and the rotating shaft of the screw is powered from the output shaft 130 rotating at a low speed and used as a juicer, or a mixer module 30 (refer to FIG. 12) including a rotary blade is replaced and attached, and the rotating shaft of the rotary blade is powered from the output shaft 130 rotating at a high speed and can be used as a mixer. At this time, it can automatically sense that either one of the juice extraction module 20 or the mixer module 30 is mounted on the drive device 100, and the clutch vertical movement part 160 can automatically move the clutch 110 up and down according to the type of the mounted upper module.

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

[0069] FIG. 7 is a perspective view of a driving device for rotating a single output shaft at high speed 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 operations in the low-speed mode and the high-speed mode, respectively.

[0070] A driving device 100 for rotating a single output shaft 130 at high speed or low speed according to another embodiment of the present invention 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, the output shaft 130, the output shaft gear 140, the reduction gears 150, 155 constituting the driving device 100 according to the present invention can be arranged inside a housing 180 in the same manner as in the foregoing embodiment. The upper end portion of the output shaft 130 protrudes above the upper portion of the housing 180 through an output shaft through hole 182 in the upper portion of the housing 180. In the drawing, the driving motor is arranged below the illustrated housing 180 (only a motor shaft 102 extending upward from the driving motor is shown inside the housing 180 in the drawing), but it can also be formed to be arranged inside the housing 180 together with the above-listed components. Further, the driving motor can also be arranged inside another housing (not shown) other than the illustrated housing 180.

[0072] The driving motor can be a rotary motor that generates power to rotate the output shaft 130 at high speed or low speed. Also in this embodiment, the driving motor can be a motor that rotates only at high speed without speed adjustment.

[0073] The motor shaft 102 of the driving motor can be inserted into the housing 180 through a motor shaft through hole 184 in the lower portion of the housing 180. A bearing 185 can be interposed between the motor shaft through hole 184 and the motor shaft 102.

[0074] A rotor shaft top gear 105 can be formed at the upper end of the motor shaft 102. When the output shaft 130 moves up and down, the rotor shaft top gear 105 can be coupled to or decoupled from the output shaft 130, and the power of the motor shaft 102 can be directly transmitted to the output shaft 130 or the direct transmission can be released by the rotor shaft top gear 105. Therefore, a gear train (refer to 130a in FIG. 14) that is gear-coupled to the rotor shaft top gear 105 can be formed in the circumferential direction on the inner surface of the output shaft 130. The rotor shaft top gear 105 can be integrally formed with or separately formed from the motor shaft 102.

[0075] The rotor shaft gear 120 is inserted into the motor shaft 102 and rotates with the motor shaft 102, and can be elastically supported at the lower part and move up and down along the motor shaft 102. The inner surface of the insertion hole of the rotor shaft gear 120 is formed as a square hole, and the outer surface of the motor shaft 102 can be formed as a corresponding square shaft so that the rotor shaft gear 120 can rotate with the motor shaft 102 while moving up and down along the motor shaft 102. Alternatively, a gear train that is linearly aligned vertically in the circumferential direction can be formed on the inner surface of the insertion hole of the rotor shaft gear 120 and the outer surface of the motor shaft 102, and they can be gear-coupled.

[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 that moves up and down from the upper part of the motor shaft 102 moves downward, the lower end of the output shaft 130 contacts 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, elastic force can be stored in the spring 122 that supports the lower side of the rotor shaft gear 120. Also, when the output shaft 130 moves upward, the rotor shaft gear 120 can return upward by the elastic force of the spring 122.

[0077] The upper end of the output shaft 130 protrudes above the housing 180, and a rotary shaft of a rotary mechanism to which the rotational force of the output shaft 130 is transmitted can be coupled to the upper end of the output shaft 130. At this time, as shown in the figure, an output shaft pulley 135 can be coupled to the upper end of the output shaft 130. A coupling groove 136 can be formed at the upper end of the output shaft pulley 135, and a rotary shaft of a rotary mechanism that rotates by having power transmitted to the output shaft 130 can be inserted into the coupling groove 136. The rotary mechanism can be, for example, the rotary blade 320 (refer to FIG. 12) of the mixer module 30 or the screw 230 (refer to FIG. 11) of the juice extraction module 20.

[0078] When an upper module including a rotary mechanism that rotates by having power transmitted from the output shaft 130 is coupled to the main body 10 including the drive device 100, the rotary shafts 232, 322 of the rotary mechanism are coupled to the coupling groove 136 of the output shaft pulley 135, and the rotary shafts 232, 322 of the rotary mechanism can press the output shaft pulley 135 to move the output shaft 130 coupled to the output shaft pulley 135 downward. That is, it is possible to control such that the range in which the output shaft 130 moves downward by pressing the output shaft pulley 135 varies according to the lower end positions of the rotary shafts 232, 322 of the rotary mechanism included in the upper module coupled to the upper part of the drive device 100.

[0079] As the output shaft 130 moves up and down by the upper module to be mounted, the rotor shaft gear 120 that contacts the lower end of the output shaft 130 can be moved up and down along the motor shaft 102.

[0080] The output shaft gear 140 can be inserted into the output shaft 130 and rotate. At this time, the hollow of the output shaft gear 140 into which the output shaft 130 is inserted can have a stepped shape where the diameter of the lower end is larger than that of the upper end. As shown in FIG. 9, an output shaft coupling portion 144 that is coupled to the middle portion of the output shaft 130 when the output shaft 130 moves upward can be formed at the upper end of the hollow. A middle coupling portion 132 can be formed at a predetermined position in the middle portion of the output shaft 130. However, on the outer surface of the middle coupling portion 132 and the inner surface of the output shaft coupling portion 144, a gear row that is vertically aligned in the circumferential direction is formed, and by gear coupling, the middle coupling portion 132 of the output shaft 130 can be inserted into and coupled to the output shaft coupling portion 144 of the output shaft gear 140. As shown in FIG. 10, when the output shaft 130 moves downward, the middle coupling portion 132 is positioned at the lower end of the hollow, and the coupling between the output shaft 130 and the output shaft gear 140 can be released. On the other hand, when the output shaft 130 moves upward (refer to FIG. 9), the middle coupling portion 132 moves upward and is inserted into and coupled to the output shaft coupling portion 144, and the rotational force of the output shaft gear 140 can be transmitted to the output shaft 130. Since the output shaft gear 140 can be decelerated by the reduction gears 150 and 155 and rotate at a low speed, the output shaft 130 coupled to the output shaft gear 140 rotates at a low speed.

[0081] A bearing 187 can be interposed between the output shaft gear 140 and the output shaft 130. As shown in the figure, the output shaft gear 140 can be formed in a form where a gear row coupled to the reduction gears 150 and 155 is formed on the upper outer peripheral surface, and a hollow extends downward, and the bearing 187 can be interposed inside the lower end of the output shaft gear 140. Also, the output shaft 130 can be elastically supported by a spring 138 interposed between the bearing 187 and the middle portion step jaw 131 of the output shaft 130 inside the hollow of the output shaft gear 140. The output shaft 130 can be moved downward by an upper module mounted on the upper part of the driving device 100. At this time, elastic force can be stored in the spring 138. At this time, the output shaft 130 can return upward 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 relative to the rotor shaft gear 120 that rotates together.

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

[0084] Since the configuration of the reduction gears composed of the first reduction gear 150 and the second reduction gear 155 is the same as that of the foregoing embodiment, a detailed description thereof will be omitted.

[0085] Hereinafter, with reference to FIGS. 9 to 10, the operation of the output shaft 130 in the low-speed mode and the operation in the high-speed mode will be described.

[0086] In this embodiment, when the output shaft 130 is positioned upward, the output shaft 130 can be rotated in the low-speed mode, and when the output shaft 130 is positioned downward, the output shaft 130 can be rotated in the high-speed mode. More specifically, when the upper module is not coupled to the driving device 100, the output shaft 130 is positioned at the uppermost position by the elastic force of the spring 138. When the upper module is coupled to the driving device 100, the rotating shafts 232 and 322 of the rotating mechanism press the output shaft pulley 135 and move the output shaft coupled to the output shaft pulley 135 downward. However, it is controlled such that the range in which the output shaft pulley 135 is pressed and the output shaft 130 moves downward varies according to the lower end positions of the rotating shafts 232 and 322 of the rotating mechanism. In the low-speed mode, the distance of downward movement is small so that the output shaft 130 is positioned upward with reference to the high-speed mode. In the high-speed mode, the distance of downward movement can be larger so that the output shaft 130 is positioned downward with reference to the low-speed mode.

[0087] First, as shown in FIG. 9, in the low-speed mode, the output shaft 130 is positioned upward. At this time, the vertical movement range of the output shaft 130 can be controlled according to the lower end position of the rotating shaft 232 of the rotation mechanism included in the upper module that is fixed to the upper part of the driving device 100. When the rotating shaft of the rotation mechanism is inserted into and coupled to the coupling groove 136 formed on the upper part of the output shaft pulley 135 coupled to the upper end of the output shaft 130, the output shaft 130 can be pressed to move the output shaft 130 elastically supported by the spring 138 downward. As shown in FIG. 9, by relatively shortening the length by which the rotating shaft of the rotation mechanism presses the output shaft pulley 135, the output shaft 130 can be positioned upward by the elastic force of the spring 138.

[0088] When the output shaft 130 is positioned upward, the lower end of the output shaft 130 can be disengaged from the rotor shaft top gear 105. At this time, in a state where the rotor shaft gear 120 that elastically supports in contact with the lower end of the output shaft 130 has moved downward by the output shaft 130, the gear coupling between the rotor shaft gear 120 and the reduction gears 150 and 155 is disengaged, or when the output shaft 130 is positioned upward, the rotor shaft gear 120 can move upward along the motor shaft 102 by the elastic force of the spring 122, and the gear coupling between the rotor shaft gear 120 and the second gear row 152 of the first reduction gear 150 can be engaged.

[0089] Also, when the output shaft 130 is positioned upward, the intermediate coupling portion 132 of the output shaft 130 is inserted into and coupled to the output shaft coupling portion 144 of the output shaft gear 140, and 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 upward in this way, the connection 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. Instead, the rotational force of the motor shaft 102 can be transmitted to the reduction gears 150 and 155. Due to the first reduction gear 150 and the second reduction gear 155, the output shaft gear 140 can rotate at a speed reduced 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 speed reduced by the rotation speed of 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. The length by which the rotating shaft 322 of the rotation mechanism included in the upper module seated on the drive device 100 presses the output shaft pulley 135 is made relatively longer compared to the case of FIG. 9, so that the output shaft 130 can be positioned downward compared to the low-speed mode. At this time, elastic force can be stored in the spring 138 that supports the output shaft 130.

[0092] As shown in FIG. 10, when the output shaft 130 moves downward, the lower end of the output shaft 130 is coupled to the rotor shaft top gear 105, and 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 that is elastically supported in contact with the lower end of the output shaft 130 moves downward by the output shaft 130, and the gear connection between the rotor shaft gear 120 and the reduction gears 150 and 155 can be released.

[0093] Also, as the output shaft 130 moves downward, when the connection between the output shaft coupling portion 144 of the output shaft gear 140 and the intermediate coupling portion 132 of the output shaft 130 is released and the output shaft 130 rotates, no rotational force is 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 space between the rotor shaft top gear 105 and the lower end of the output shaft 130 is coupled, and the rotational force of the motor shaft 102 can 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, the coupling between the output shaft 130 and the output shaft gear 140 is released, and the reduction gears 150 and 155 and the output shaft gear 140 do not rotate.

[0095] FIG. 11 shows a case where the juicer that can also be used as a mixer according to an embodiment of the present invention is used as a juicer, and FIG. 12 shows a case where the juicer that can also be used as a mixer according to an embodiment of the present invention is used as a mixer.

[0096] As shown in FIG. 11, when using the juicer that can also be used as a mixer according to the present invention as a juicer, the juice extraction module 20 including a juice extraction drum 210, a drum 220, a screw 230, and a hopper 240 can be attached onto the main body including the drive device 100 described above. The juice extraction module 20 that constitutes the juicer can be deformed into various known forms not only in the illustrated form, and since the detailed configuration of the juice extraction module 20 is a known configuration, its detailed description is omitted.

[0097] Also, as shown in FIG. 12, when using the juicer that can also be used as a mixer according to the present invention as a mixer, a mixer module 30 including a mixer drum 310 with a rotary blade 320 attached inside can be attached onto the same main body 10 shown in FIG. 11 and used as a mixer. A mixer is known as a device that crushes and mixes food materials introduced into the inside of the mixer drum 310 by the rotary blade 320 that rotates at high speed at the lower end of the mixer drum 310, but the meaning of the mixer in the present invention can be broadly interpreted as a device used for the purpose of processing food materials using the rotary blade 320 that rotates at high speed.

[0098] In FIGS. 11 and 12, the drive device 100 of the embodiment described above with reference to FIGS. 7 to 10 is shown. An output shaft 130 protrudes upward from the upper part 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 juice extraction module 20 is placed on the main body 10, the lower rotating 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 placed on the main body 10, the lower rotating shaft 322 of the rotating blade 320 is inserted into and coupled to the coupling groove 136 of the output shaft pulley 135. At this time, due to the difference in the pressing length between the rotating shaft 232 of the screw and the rotating shaft 322 of the rotating blade, the range in which the rotating shafts 232 and 322 press the output shaft pulley 135 and the output shaft 130 moves downward can be changed.

[0099] As described above, when the rotating shaft 322 of the rotating blade 320 is coupled to the output shaft pulley 135 and moves the output shaft 130 downward, the drive device 100 can operate in the high-speed mode. When the rotating shaft 232 of the screw 230 is coupled to the output shaft pulley 135 and moves the output shaft 130 downward and relatively positions it upward, the drive device 100 can operate in the low-speed mode.

[0100] In the following description, various modifications of the above-described embodiment will be described.

[0101] Figure 13 shows the coupling state of the output shaft and the output shaft gear according to another embodiment of the present invention. In the present invention, the "gear" is not defined only by a normal gear (spur gear, helical gear, etc.) in which gear teeth are densely formed in the circumferential direction. It can be composed of a spur gear or a helical gear, but if power can be transmitted, several key protrusions and / or key grooves may be formed protruding in the circumferential direction. In the illustrated example, four key protrusions 132a protrude radially outward at equal intervals along the circumferential direction in the intermediate coupling portion 132, and correspondingly, four key grooves 144a are formed radially inward at equal intervals along the circumferential direction in the output shaft coupling portion 144. Or, conversely, 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] Figure 14 shows a drive device according to still another embodiment of the present invention. In the following, the same content as described above will be omitted, and only the content presented in the different embodiments will be described.

[0103] In the power transmission structure connected by the motor shaft 102, the output shaft gear 140, and the output shaft 130, it is important to maintain a firm support state of each component during high-speed rotation. For this purpose, in this embodiment, two bearings located in the upper inner part of the housing 180 are arranged to overlap horizontally. In the illustrated embodiment, the bearings are reference numerals "186a" and "186b" in the drawing. By placing these two bearings 186a and 186b, the output shaft 130 and the output shaft gear 140 can be firmly supported from the inside and outside. In particular, since the bearings 186a and 186b are installed to overlap horizontally, there is an effect that the internal space of the housing 180 can be reduced while obtaining a firm support effect.

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

[0105] FIG. 15 is an enlarged view of the main part of FIG. 14, showing a state in which the gear teeth 120a of the rotor shaft gear 120 mesh with the gear teeth 152a of the second gear row 152.

[0106] In this invention, the output shaft 130 and the rotor shaft top gear 105 are coupled by gear coupling between the gear train formed on the radially outer surface of the rotor shaft top gear 105 and the gear train 130a (see FIG. 14) formed on the inner surface of the output shaft 130, and the power of the motor shaft 102 is directly transmitted to the output shaft 130. However, when the output shaft 130 descends, the gear train 130a inside the output shaft 130 moves axially, and for the gear trains of the rotor shaft top gear 105 to be inserted into each other for gear coupling, they should be aligned in a fixed position in the circumferential direction. Therefore, in this embodiment, as shown in the figure, a plurality of output shaft coupling guides 130b are formed axially along the circumferential direction at the lower part of the output shaft 130, and corresponding motor shaft coupling guides are formed axially along the circumferential direction at the upper part of the rotor shaft gear 120. Thereby, as the output shaft 130 descends, the output shaft coupling guide 130b and the motor shaft coupling guide 120b are fitted to slide with each other, and when the inner gear train 130a of the output shaft 130 and the outer gear train of the rotor shaft top gear 105 are aligned in a fixed position in the circumferential direction and the output shaft 130 descends, the two gear trains can be easily coupled. In the illustrated example, an example is shown in which a plurality of ridges and valleys protrude axially while the output shaft coupling guide 130b and the motor shaft coupling guide 120b rotate in the circumferential direction. The valleys adjacent to the ridges show a shape that is concave axially. The ridges 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. Thereby, from the time when the output shaft 130 descends and contacts the motor shaft coupling guide 120b, the ridges and valleys are fitted to slide, and the output shaft 130 and the motor shaft 102 are naturally coupled.

[0107] The structure in which ridges and valleys are formed and contact each other in this way can also be similarly applied to the coupling structure between the motor shaft coupling portion 112 and the rotor shaft top gear 105 described above. In this case, although not shown in detail, a clutch coupling guide can be formed in a form in which ridges and valleys are formed axially along the circumferential direction at the lower part of the clutch 110 in the manner described above, and a motor shaft coupling guide in a form in which ridges and valleys are formed axially in the circumferential direction can be formed at the upper part of the rotor shaft gear 120.

[0108] On the one hand, 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 show spur gear teeth with a constant cross-section in the axial direction. However, when a large torque is transmitted from a drive motor (not shown) to the motor shaft 102, the concentricity of the motor shaft 102 may not be maintained, and the motor shaft 102 may tilt laterally 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 can be formed to be slightly inclined in opposite directions, for example, like helical gears. When the two meshing gear teeth 120a and 152a are inclined by about up to about 5° with respect to the axial direction, that is, the axis, the above-mentioned problems can be prevented.

[0109] The scope of the right of the present invention is not limited to the above-described embodiments, and can be embodied in various forms within the scope of the appended claims. As long as it does not depart from the gist of the present invention claimed in the claims, it is considered to be within the scope of the description of the claims of the present invention to such various ranges that anyone having ordinary knowledge in the technical field to which the invention pertains can make modifications.

Claims

1. A drive motor, a clutch that is coupled to a rotor shaft top gear formed on a motor shaft of the drive motor and rotates together with the motor shaft when moving downward while 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 and rotates on the output shaft 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, rotates together with the motor shaft, 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 to reduce the rotational speed of the output shaft gear compared to the rotational speed of the motor shaft, when the clutch moves downward, the rotor shaft top gear is coupled to the clutch, the gear coupling between the rotor shaft gear and the reduction gear is released, the coupling between the output shaft gear and the clutch is released, and the high-speed rotation of the motor shaft is transmitted to the clutch and the output shaft to rotate the output shaft at high speed, when the clutch moves upward, the coupling between the rotor shaft top gear and the clutch is released, the rotor shaft gear and the reduction gear are gear-coupled, the output shaft gear and the clutch are coupled, the high-speed rotation of the motor shaft is decelerated 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 speed lower than that of the motor shaft. A drive device for rotating a single output shaft at high speed or low speed, characterized in that.

2. The drive device for rotating a single output shaft at high speed or low speed according to claim 1, further comprising a clutch vertical movement section for moving the clutch up and down.

3. The clutch vertical movement section includes a clutch case coupled to the clutch, and a vertical drive section that is connected to one side of the clutch case and moves the clutch case up and down. The drive device for rotating a single output shaft at high speed or low speed according to claim 2.

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

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

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

7. The reduction gear includes a first reduction gear that is gear-coupled to the rotor shaft gear and a second reduction gear that is gear-coupled between the first reduction gear and the output shaft gear. The drive device for rotating a single output shaft at high speed or low speed according to claim 1.

8. The first reduction gear and the second reduction gear are formed in two stages by a first gear row formed on a circumference with a small radius and a second gear row formed on a circumference with a large radius. The second gear row of the first reduction gear is gear-coupled to the rotor shaft gear and rotates at a reduced speed. The second gear row of the second reduction gear is gear-coupled to the first gear row of the first reduction gear and rotates at a reduced speed. The output shaft gear is gear-coupled to the first gear row of the second reduction gear and rotates at a reduced speed. The drive device for rotating a single output shaft at high speed or low speed according to claim 1.

9. A drive motor, A rotor shaft gear inserted into the motor shaft of the drive motor and rotating together with the motor shaft, and elastically supported to move up and down. When moving up and down from the upper part of the motor shaft and moving downward, it is coupled to a rotor shaft top gear formed on the motor shaft and rotates together with the motor shaft, and an output shaft that moves the rotor shaft gear downward. An output shaft gear inserted into and rotating with the output shaft, and when the output shaft moves upward, it is coupled to the output shaft and rotates the output shaft together, 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. When the output shaft moves downward, the output shaft is coupled to the rotor shaft top gear, the gear coupling between the rotor shaft gear and the reduction gear is released, the coupling between the output shaft and the output shaft gear is released, and the high-speed rotation of the motor shaft is transmitted to the output shaft to rotate the output shaft at high speed. When the output shaft moves upward, the connection between the output shaft and the rotor shaft top gear is released, the gear connection is established between the rotor shaft gear and the reduction gear, and the connection is established between the output shaft and the output shaft gear. The high-speed rotation of the motor shaft is decelerated 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 lower than that of the motor shaft. A drive device for rotating a single output shaft at high speed or low speed is characterized in that.

10. When an upper module that houses a rotation mechanism that rotates by receiving power from the output shaft is coupled to the drive device, the rotation shaft of the rotation mechanism is coupled, and further includes an output shaft pulley that is coupled to the upper end of the output shaft. The drive device for rotating a single output shaft at high speed or low speed according to claim 9, characterized in that the rotation shaft presses the output shaft pulley to move the output shaft downward.

11. The hollow of the output shaft gear into which the output shaft is inserted has a stepped diameter with the lower end being larger than the upper end. When the output shaft moves upward, an output shaft coupling portion into which an intermediate coupling portion formed in the middle of the output shaft is inserted and coupled is formed at the upper end of the hollow. A drive device for rotating a single output shaft at high speed or low speed according to claim 10, characterized in that.

12. A gear train is formed on the outer surface of the intermediate coupling portion and the inner surface of the output shaft coupling portion, or A key projection or key groove is formed on the outer surface of the intermediate coupling portion, and a key groove corresponding to the key projection formed on the outer surface of the intermediate coupling portion or a key projection corresponding to the key groove formed on the outer surface of the intermediate coupling portion is formed on the output shaft coupling portion. A drive device for rotating a single output shaft at high speed or low speed according to claim 11, characterized in that.

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

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

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

17. The drive device for rotating a single output shaft at high speed or low speed according to claim 9, wherein the reduction gear includes a first reduction gear that is gear-coupled to the rotor shaft gear and a second reduction gear that is gear-coupled 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 by a first gear row formed on a circumference with a small radius and a second gear row formed on a circumference with a large radius. The drive device for rotating a single output shaft at high speed or low speed according to claim 17, wherein the second gear row of the first reduction gear is gear-coupled to the rotor shaft gear and rotates at a reduced speed, the second gear row of the second reduction gear is gear-coupled to the first gear row of the first reduction gear and rotates at a reduced speed, and the output shaft gear is gear-coupled to the first gear row of the second reduction gear and rotates at a reduced speed.

19. A motor shaft coupling guide having ridges and valleys formed axially along the circumferential direction is formed above the rotor shaft gear. The drive device for rotating a single output shaft at high speed or low speed according to claim 9, wherein an output shaft coupling guide having ridges and valleys formed axially along the circumferential direction is formed below the output shaft so as to correspond to the motor shaft coupling guide.

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

21. The drive device for rotating a single output shaft at high speed or low speed according to claim 20, wherein an angle by which the gear teeth of the rotor shaft gear and the gear teeth of the reduction gear gear-coupled to the rotor shaft gear are inclined with respect to the axial direction is within 5°.

22. The drive device according to any one of claims 1 to 21 A mixer module that includes a rotating blade that is rotated at high speed by power transmitted from the output shaft and is attached to the upper part of the drive device, and A juicer that can also be used as a mixer, including a screw that is rotated at low speed by power transmitted from the output shaft and a juicer module that is attached by exchanging with the mixer module at the upper part of the drive device.

Images