Low-cost juicer power driving device and juicer

Abstract

The utility model discloses a low-cost juicer power driving device and a juicer, the low-cost juicer power driving device comprises an insulated driving installation shell, and a driving motor shaft, a power transmission mechanism and a power output shaft which are in transmission connection in sequence, and the driving motor shaft and the power output shaft are both made of metal materials; the front end of the driving motor shaft is sleeved with an electric insulation wrapping piece, and the electric insulation wrapping piece completely wraps the front end of the driving motor shaft and isolates the driving motor shaft from the power output shaft and the power transmission mechanism. The power transmission mechanism comprises a planetary gear mechanism, and the planetary gear mechanism is in transmission connection with the electric insulation wrapping piece. According to the low-cost power driving device of the juicer, the electric insulation wrapping piece is additionally arranged at the front end of the driving motor shaft and completely wraps the front end of the driving motor shaft, so that the driving motor shaft, the power output shaft and the power transmission mechanism are subjected to strong current isolation; and the size and the manufacturing cost of the low-cost juicer power driving device are reduced.

Description

Technical Field

[0001] The utility model relates to the field of juicers, in particular to a low-cost juicer power drive device and a juicer. Background Art

[0002] A juicer is a kitchen appliance that is specially used to squeeze fruits or vegetables into juice. It usually consists of a rotating juicer and a filter. It can squeeze fruits, vegetables and other ingredients into juice, remove solid residues, and extract juice. Juicers can be used to make various fruit juices, vegetable juices, mixed juices and other beverages, as well as juices required for certain dishes. With the increasing number of cooking utensils and cooking methods, the frequency of use of juicers has also increased.

[0003] Juicers are Class B electrical appliances. In the prior art, in order to meet the strong electrical isolation requirements of juicers, the internal transmission components of the juicers are generally made of plastic, which effectively ensures the distance between the metal drive motor shaft and the power output shaft, and also ensures the strong electrical isolation requirements inside the transmission components. However, this results in the low-cost juicer power drive device in the prior art being large in size and having a small output torque, which cannot meet people's increasing demand for juicer performance. Utility Model Content

[0004] In order to overcome at least one defect of the above-mentioned prior art, one of the purposes of the present utility model is to provide a low-cost juicer power drive device, by adding an electric-insulating wrapping piece at the front end of the drive motor shaft, and the electric-insulating wrapping piece completely wraps the front end of the drive motor shaft, so as to strongly isolate the drive motor shaft from the power output shaft and the power transmission mechanism, thereby reducing the volume and manufacturing cost of the low-cost juicer power drive device. At the same time, the power transmission mechanism adopts a planetary gear mechanism to ensure that the low-cost juicer power drive device has a large output torque.

[0005] In order to overcome at least one defect of the above-mentioned prior art, the second purpose of the present utility model is to provide a juicer, which adopts the aforementioned low-cost juicer power drive device, so that the juicer has a small overall size, low manufacturing cost and large output torque.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A low-cost juicer power drive device comprises an insulating drive mounting housing, a drive motor shaft, a power transmission mechanism and a power output shaft which are installed in the drive mounting housing and are sequentially connected in transmission, wherein the drive motor shaft and the power output shaft are both made of metal materials;

[0008] The front end of the drive motor shaft is sleeved with an electrical insulation wrapping member, the electrical insulation wrapping member completely wraps the front end of the drive motor shaft and electrically isolates the drive motor shaft from the power output shaft, and electrically isolates the drive motor shaft from the power transmission mechanism;

[0009] The power transmission mechanism includes a planetary gear mechanism, and the planetary gear mechanism is transmission-connected to the electrical isolation package.

[0010] Preferably, the electric-insulating wrapping member is made of insulating material, and the top of the electric-insulating wrapping member is located between the front end surface of the drive motor shaft and the side surface of the output planetary carrier of the planetary gear mechanism facing the drive motor shaft;

[0011] The top thickness of the electrical insulation package is not less than 2 mm, and the output planetary carrier of the planetary gear mechanism is drivingly connected to the power output shaft.

[0012] Preferably, the minimum distance between the front end surface of the drive motor shaft and the side surface of the output planetary carrier of the planetary gear mechanism facing the drive motor shaft is not less than 3 mm.

[0013] Preferably, the planetary gear mechanism includes a first planetary gear assembly, which includes a first sun gear, a first planetary gear, a first planetary carrier and a first external fixed internal gear ring; the first sun gear is coaxially arranged with the drive motor shaft, and is located at the outer periphery of the electrical isolation package and is fixedly connected to the electrical isolation package; the first planetary gear is mounted on the first planetary carrier and meshes with the outside of the first sun gear, the first planetary gear is meshed with the inside of the first external fixed internal gear ring, and the power output shaft is driven by the first planetary carrier;

[0014] The first planetary gear is connected to a first gear shaft for mounting the first planetary gear, the first gear shaft is made of a metal material and is fixedly mounted to the first planetary carrier; the minimum distance between the first gear shaft and the drive motor shaft is not less than 7 mm;

[0015] The first planet carrier is made of metal material, and the top of the electric-insulating wrapping member is located between the front end surface of the drive motor shaft and the side surface of the first planet carrier facing the drive motor shaft;

[0016] The minimum distance between the front end surface of the drive motor shaft and the side surface of the first planet carrier facing the drive motor shaft is not less than 3 mm.

[0017] Preferably, the first sun gear is made of insulating material, and the first sun gear is coaxially sleeved outside the electrical insulation package and is integrally formed with the electrical insulation package.

[0018] Preferably, the planetary gear mechanism comprises a second planetary gear assembly, and the second planetary gear assembly is driven by the first planet carrier;

[0019] The second planetary gear assembly includes a second sun gear, a second planetary gear, a second planet carrier, and a second external fixed inner gear ring; the second sun gear is coaxially arranged with the drive motor shaft and fixedly mounted with the first planet carrier; the second planetary gear is mounted on the second planet carrier and meshes externally with the second sun gear, and the second planetary gear is meshed internally with the second external fixed inner gear ring.

[0020] The second planetary gear is connected to a second gear shaft for mounting the second planetary gear, the second gear shaft is made of metal material and is fixedly mounted to the second planetary carrier; the power output shaft is fixedly connected to the second planetary carrier; the second planetary carrier is made of metal material.

[0021] Preferably, the first planetary gear and the second planetary gear are both made of plastic, and the second sun gear is fixedly mounted to the first planet carrier.

[0022] Preferably, the drive installation housing comprises a first cavity and a second cavity which are isolated from each other, and a drive motor is installed in the first cavity;

[0023] An isolation plate is provided between the first cavity and the second cavity, an avoidance hole is provided on the isolation plate, the drive motor shaft extends from the drive motor and extends into the second cavity through the avoidance hole, and the power transmission mechanism is provided in the second cavity;

[0024] The electric-insulating wrapping piece wraps the front end of the drive motor shaft, and the opening end of the electric-insulating wrapping piece faces the first cavity side and passes through the avoidance hole.

[0025] Preferably, a top cover is provided at the front end of the second cavity, one end of the power output shaft is placed in the second cavity and fixedly mounted to the output planetary carrier of the planetary gear mechanism, the other end of the power output shaft extends from the top cover, and a bearing is provided between the power output shaft and the top cover; a plurality of mounting columns are provided on the outer surface of the top cover.

[0026] A juicer comprises the aforementioned low-cost juicer power drive device.

[0027] In summary, the low-cost juicer power drive device provided by the utility model has the following technical effects:

[0028] 1. The drive motor shaft and the power output shaft are both made of metal materials, which ensures the input and output of large torque in the power transmission, avoids problems such as breakage of the drive motor shaft and the power output shaft, and extends the service life of the drive motor shaft and the power output shaft and the service life of the low-cost juicer power drive device.

[0029] 2. By adding an insulating wrapping piece at the front end of the drive motor shaft, and the insulating wrapping piece completely wraps the front end of the drive motor shaft, the drive motor shaft is electrically isolated from the power output shaft and the power transmission mechanism, so that the low-cost juicer power drive device meets the strong electrical isolation requirements of Class B electrical appliances.

[0030] 3. By adding an insulating package to the front end of the drive motor shaft, the low-cost juicer power drive device can meet the strong electrical isolation requirements of Class B electrical appliances, thereby reducing the overall volume and manufacturing cost of the low-cost juicer power drive device.

[0031] 4. The power transmission mechanism adopts a planetary gear mechanism to ensure the small size and high torque output of the low-cost juicer power drive device.

[0032] The utility model provides a juicer with the following technical effects: the juicer adopts the aforementioned juicer power drive device, the juicer is small in size, meets the strong electrical isolation requirements of Class B electrical appliances, has a large output torque, meets people's increasingly high performance requirements for juicers, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural schematic diagram of an embodiment of a low-cost juicer power drive device according to the technical solution of the utility model.

[0034] Figure 2 This is a schematic structural diagram of an embodiment of the internal structure of a low-cost juicer power drive device according to the technical solution of the utility model.

[0035] Figure 3 for Figure 2 A three-dimensional diagram of the invention, with some components not shown.

[0036] The meanings of the reference numerals are as follows:

[0037] 10. Low-cost juicer power drive device; 1. Drive motor shaft; 11. Electric insulation package; 2. Power output shaft; 3. Power transmission mechanism; 31. First sun gear; 32. First planetary gear; 33. First planetary carrier; 34. First gear shaft; 41. Second sun gear; 42. Second planetary gear; 43. Second planetary carrier; 44. Second gear shaft; 5. External fixed inner ring gear; 6. First cavity; 7. Second cavity; 8. Isolation plate; 81. Avoidance hole; 9. Top cover; 91. Mounting column; 92. Bearing. DETAILED DESCRIPTION

[0038] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0041] See also Figure 1 and Figure 2 The utility model discloses a schematic structural diagram of an embodiment of a low-cost juicer power drive device.

[0042] A low-cost juicer power drive device 10 includes an insulated drive mounting housing, and a drive motor shaft 1, a power transmission mechanism 3, and a power output shaft 2 installed in the drive mounting housing and sequentially connected in transmission. The drive motor shaft 1 drives the power transmission mechanism 3 to work, and the power transmission mechanism 3 drives the power output shaft 2 to rotate.

[0043] The drive motor shaft 1 and the power output shaft 2 are both made of metal materials, so that the drive motor shaft and the power output shaft can output large torque, avoid problems such as breakage of the drive motor shaft and the power output shaft, and extend the service life of the drive motor shaft and the power output shaft and the service life of the low-cost juicer power drive device.

[0044] The front end of the drive motor shaft 1 is sleeved with an electric-insulating wrapping member 11, which completely wraps the front end of the drive motor shaft 1 and electrically isolates the drive motor shaft 1 from the power output shaft 2, and electrically isolates the drive motor shaft from the power transmission mechanism. The strong electrical isolation between the drive motor shaft and the power output shaft and the power transmission mechanism is achieved, so that the low-cost juicer power drive device meets the strong electrical isolation requirements of Class B electrical appliances. At the same time, it can also reduce the overall volume and manufacturing cost of the low-cost juicer power drive device.

[0045] The power transmission mechanism includes a planetary gear mechanism, which has a compact structure, low transmission noise, low vibration, and large output torque. The power transmission mechanism adopts a planetary gear mechanism to ensure the small size and large torque output of the low-cost juicer power drive device.

[0046] The planetary gear mechanism is in transmission connection with the electric-insulating package 11. The drive motor shaft drives the electric-insulating package 11 to rotate synchronously, and the electric-insulating package 11 drives the planetary gear mechanism to work, thereby realizing the transmission connection between the planetary gear mechanism and the drive motor shaft.

[0047] In this solution, the electric-insulating wrapping member 11 is sleeved on the outside of the front end of the drive motor shaft and is interference-fitted with the drive motor shaft to achieve a fixed connection between the electric-insulating wrapping member 11 and the drive motor shaft.

[0048] In the present solution, an insulating wrap 11 is sleeved on the front end of the drive motor shaft, and the insulating wrap 11 completely wraps the front end of the drive motor shaft, thereby solving the problem that the metal drive motor shaft requires a larger creepage distance and electrical clearance. By setting the insulating wrap 11, the creepage distance and electrical clearance of the metal drive motor shaft are greatly reduced, thereby effectively reducing the internal structure of the low-cost juicer power drive device 10, and realizing the miniaturization and low cost of the low-cost juicer power drive device 10.

[0049] In this solution, the electric-insulating wrapping member 11 is made of insulating material and has insulating and electric-insulating functions. The minimum distance between the drive motor shaft 1 and the power output shaft 2 is not less than 3 mm.

[0050] The drive motor shaft 1 is circular, and along its radius, the creepage distance is the minimum distance between the metal drive motor shaft and the metal power output shaft 2 is the electrical clearance between the drive motor shaft 1 and the power output shaft 2. According to the requirements of the electricity safety guide, the electrical clearance between the electric control part with a working voltage greater than 130V to 250V and the non-electrical metal parts is greater than 3mm, and the creepage distance is greater than 4mm. Therefore, in this solution, the minimum distance between the drive motor shaft 1 and the power output shaft 2 is not less than 3mm to ensure strong electrical isolation.

[0051] In this solution, by adding an insulating wrapping member 11, the electrical clearance between the drive motor shaft 1 and the power output shaft 2 is effectively reduced. That is, in this solution, by setting the insulating wrapping member 11 and setting the minimum distance between the drive motor shaft 1 and the power output shaft 2 to be not less than 3 mm, strong electrical isolation between the drive motor shaft 1 and the power output shaft 2 is further ensured, ensuring that the low-cost juicer power drive device 10 meets the electrical safety guidelines for Class B electrical appliances.

[0052] However, in this solution, the drive motor shaft and the power output shaft are driven by a planetary gear mechanism. In order to meet the strong electrical isolation requirements, the distance between the drive motor shaft and the metal parts in the planetary gear mechanism should be no less than 3 mm to meet the strong electrical isolation requirements. That is, the top of the electrical isolation package is located between the front end surface of the drive motor shaft and the side of the output planetary carrier of the planetary gear mechanism facing the drive motor shaft, and the top thickness of the electrical isolation package is no less than 2 mm, providing sufficient strong electrical isolation capability to ensure strong electrical isolation.

[0053] In addition, the output planet carrier of the planetary gear mechanism is drivingly connected to the power output shaft, so that the power output shaft drives the planetary gear mechanism, and the strong electrical isolation requirement between the drive motor shaft and the output planet carrier made of the nearest metal in the planetary gear mechanism is met. The minimum distance between the front end face of the drive motor shaft and the side of the output planet carrier of the planetary gear mechanism facing the drive motor shaft is not less than 3 mm.

[0054] Generally, the cross-section of the drive motor shaft is a regular shape such as a circle, a semicircle, a rectangle, etc. In the present solution, based on the structure of the drive motor shaft, in order to simplify the structure of the electric insulation wrapping member, reduce the difficulty and cost of the processing technology of the electric insulation wrapping member, and improve the strength of the electric insulation wrapping member, the electric insulation wrapping member is generally in the shape of a sleeve, that is, an electric insulation wrapping sleeve, which is wrapped around the front end of the drive motor shaft. An interference fit is adopted between the inner wall of the electric insulation wrapping sleeve and the outer wall of the drive motor shaft to ensure that the electric insulation wrapping sleeve is firmly wrapped around the front end of the drive motor shaft to avoid the front end of the drive motor shaft from falling off or relative movement during operation, which affects the power transmission between the drive motor shaft and the electric insulation wrapping sleeve.

[0055] In this scheme, if Figure 2 and Figure 3 As shown, the planetary gear mechanism includes a first planetary gear assembly. The first planetary gear assembly includes a first sun gear 31, a first planetary gear 32, a first planet carrier 33 and a first external fixed inner gear ring. The first sun gear 31 is coaxially arranged with the drive motor shaft 1, and is located on the outer periphery of the electrical isolation package 11 and is fixed to the electrical isolation package. The first planetary gear 32 is mounted on the first planet carrier 33 and meshes with the outside of the first sun gear, and the first planetary gear 32 meshes with the inside of the first external fixed inner gear ring. The power output shaft 2 is driven by the first planet carrier 33. The first planetary gear 32 is connected to a first gear shaft 34 for mounting the first planetary gear 32, and the first gear shaft 34 is made of metal material and is fixedly mounted on the first planet carrier 33.

[0056] The electrical-isolating package 11 drives the first sun gear 31 to rotate, and the first planetary gear 32 meshing with the first sun gear 31 realizes self-rotation. Because the first planetary gear 32 is installed with the first planetary carrier and meshes with the first external fixed internal gear ring, the first planetary gear 32 revolves around the electrical-isolating package 11, driving the first planetary carrier to rotate, and the rotation of the first planetary carrier drives the power output shaft 2 to rotate.

[0057] In this solution, the setting of the first planetary gear assembly realizes the transmission of the power of the driving motor 1 to the power output shaft 2, thereby realizing power transmission, and has a simple structure, a small and compact size, a smooth transmission, and a large output torque.

[0058] The minimum distance between the first gear shaft 34 and the drive motor shaft 1 is not less than 7mm. According to the requirements of the electricity safety guide, the electrical clearance between the electronic control part with an operating voltage greater than 130V to 250V and the non-electrical metal parts is greater than 3mm, and the creepage distance is greater than 4mm. Therefore, in this solution, the minimum distance between the first gear shaft 34 made of metal and the drive motor shaft 1 is not less than 7mm, which meets the creepage distance requirements of the drive motor shaft 1. In this solution, the creepage distance between the drive motor shaft 1 and the first gear shaft 34 made of metal is ensured by setting the electrical insulation package 11 and using the solution of the minimum distance between the first gear shaft 34 and the drive motor shaft 1 being not less than 7mm.

[0059] The first gear shaft 34 is made of metal, which ensures the stability of its transmission and the output of large torque of the first planetary gear assembly.

[0060] To ensure that the first planetary gear assembly outputs a larger torque, the first planet carrier is made of metal material, and the top of the electrical insulation package is located between the front end face of the drive motor shaft and the side of the first planet carrier facing the drive motor shaft. To ensure the strong electrical isolation requirement between the drive motor shaft and the first planet carrier made of metal, the minimum distance between the front end face of the drive motor shaft and the side of the first planet carrier facing the drive motor shaft is not less than 3 mm.

[0061] In this solution, in order to ensure the electrical isolation requirement between the first sun gear 31 and the drive motor shaft, the first sun gear 31 is made of insulating material. In order to simplify the structure and installation of the first sun gear, as well as to simplify the production process of the first sun gear, the first sun gear 31 is coaxially sleeved outside the electrical insulation package 11 and is integrally formed with the electrical insulation package 11. The first sun gear and the electrical insulation package 11 are integrally formed to ensure the coaxiality of the electrical insulation package 11 and the first sun gear, enhance the overall strength of the electrical insulation package 11 and the first sun gear, and extend the service life of the first sun gear.

[0062] In order to further improve the output torque of the planetary gear mechanism, reduce the meshing force of a single gear inside the planetary gear mechanism, and extend the overall service life of the planetary gear mechanism, the planetary gear mechanism also includes a second planetary gear assembly, the first planetary gear assembly and the second planetary gear assembly are transmission connected, the first planetary gear assembly transmits the power output by the drive motor shaft to the second planetary gear assembly, and the second planetary gear assembly transmits the power to the power output shaft.

[0063] like Figure 2 As shown, the planetary gear mechanism includes a second planetary gear assembly, which is driven by the first planet carrier 33. The second planetary gear assembly includes a second sun gear 41, a second planetary gear 42, a second planet carrier 43, and a second external fixed inner gear ring. The second sun gear 41 is coaxially arranged with the drive motor shaft 1 and fixedly mounted with the first planet carrier 33. The second planetary gear 42 is mounted on the second planet carrier 43 and meshes with the second sun gear externally, and the second planetary gear 42 meshes with the second external fixed inner gear ring internally.

[0064] The first planet carrier 33 in the first planetary gear assembly rotates, driving the second sun gear mounted thereon to rotate, and the second sun gear rotates to drive the second planet gear 42 meshing with it externally to rotate, and the second planet gear is also meshed with the second external fixed inner gear ring, so the second planet gear 42 revolves around the second sun gear, driving the second planet carrier to rotate. The second planet carrier 43 is fixedly connected to the power output shaft 2, driving the power output shaft to rotate. The second sun gear is coaxially arranged with the power output shaft.

[0065] By setting the second planetary gear assembly, the transmission stability and transmission torque of the power transmission mechanism are further increased, ensuring that the low-cost juicer power drive device outputs a large torque and meets people's high requirements for the performance of the juicer.

[0066] A second gear shaft 44 for mounting the second planetary gear 42 is connected to the second planetary gear 42. The second gear shaft 44 is made of metal material and fixedly mounted with the second planetary carrier 43 made of metal. The second planetary gear is mounted with a second gear shaft made of metal to ensure that the second planetary carrier 43 outputs torque, and also ensures that the second planetary gear assembly outputs torque, and ensures that the power output shaft outputs large torque. The first planetary gear 32 and the second planetary gear 42 are both made of plastic, which is low in cost, light in weight, and convenient for achieving strong electrical isolation inside the power transmission assembly. The second sun gear 41 and the first planetary carrier 33 are fixedly mounted to facilitate the installation of the second sun gear 41 and ensure that the second sun gear is coaxial with the rotating shaft of the first planetary carrier.

[0067] In this solution, by adding an insulating wrapping piece, the problem of electrical clearance and creepage distance of the drive motor shaft is solved, so that the interior of the low-cost juicer power drive device meets the strong electrical isolation requirements of Class B electrical appliances, and the first gear shaft and the second gear shaft in the first planetary gear assembly and the second planetary gear assembly of the power transmission assembly can be made of metal, ensuring the high torque output of the power transmission assembly. In addition, after the first gear shaft and the second gear shaft are made of metal, all gears in the first planetary gear assembly and the second planetary gear assembly can be made of plastic, reducing the cost of the power transmission assembly and the cost of the low-cost juicer power drive device.

[0068] In this solution, in order to simplify the structure of the power transmission mechanism, the first external fixed inner gear ring and the second external fixed inner gear ring are coaxially arranged and integrally formed, such as Figure 2 As shown in the middle outer fixed inner gear ring 5, the outer fixed inner gear ring 5 has a relatively high height and can mesh with the first planetary gear and the second planetary gear at the same time, thereby simplifying the structure and installation of the power transmission mechanism.

[0069] In this solution, the drive mounting housing in the low-cost juicer power drive device 10 includes a first cavity 6 and a second cavity 7 that are isolated from each other, and a drive motor is installed in the first cavity 6. An isolation plate 8 is provided between the first cavity 6 and the second cavity 7, and an avoidance hole 81 is provided on the isolation plate 8. The drive motor shaft 1 extends from the drive motor and extends into the second cavity 7 through the avoidance hole 81. The electric insulation package 11 is provided in the second cavity. The power transmission mechanism 3 is provided in the second cavity 7.

[0070] The arrangement of the first cavity and the second cavity facilitates the installation of the drive motor and the power transmission mechanism on the one hand, and also achieves strength isolation of the drive motor shaft on the other hand.

[0071] The electric insulation wrapper 11 wraps the front end of the drive motor shaft 1, and the open end of the electric insulation wrapper 11 faces the first cavity 6 and passes through the avoidance hole 81. The electric insulation wrapper 11 completely wraps the part of the drive motor shaft located in the second cavity to ensure that the second cavity meets the strong electrical isolation requirements.

[0072] like Figure 2 A top cover 9 is provided at the front end of the second cavity 7, one end of the power output shaft 2 is placed in the second cavity 7 and fixedly installed with the output planetary carrier of the planetary gear mechanism. In this embodiment, it is specifically fixedly installed with the second planetary carrier, and the other end of the power output shaft 2 extends from the top cover 9, and a bearing 92 is provided between the power output shaft 2 and the top cover 9. The bearing is used to install the power output shaft to ensure that the power output shaft is installed stably and reliably.

[0073] A plurality of mounting posts 91 are arranged on the outer surface of the top cover 9 , and the mounting posts 91 match the position of the juicer to limit and position the low-cost juicer power drive device 10 .

[0074] Based on the aforementioned juicer power drive device, the present solution also proposes a low-cost juicer, which includes the aforementioned low-cost juicer power drive device 10. In the low-cost juicer power drive device 10, by adding an insulating package, the problem of electrical clearance and creepage distance of the drive motor shaft is solved, so that the interior of the low-cost juicer power drive device meets the strong electrical isolation requirements of Class B electrical appliances, so that the first gear shaft and the second gear shaft in the first planetary gear assembly and the second planetary gear assembly of the power transmission assembly can be made of metal, ensuring the high torque output of the power transmission assembly. In addition, after the first gear shaft and the second gear shaft are made of metal, all gears in the first planetary gear assembly and the second planetary gear assembly can be made of plastic, reducing the cost of the power transmission assembly and the cost of the low-cost juicer power drive device.

[0075] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A low-cost juicer power drive device, characterized in that: It includes an insulated drive installation housing, and a drive motor shaft, a power transmission mechanism and a power output shaft which are installed in the drive installation housing and are sequentially connected in transmission, and the drive motor shaft and the power output shaft are both made of metal materials; The front end of the drive motor shaft is sleeved with an electrical insulation wrapping member, the electrical insulation wrapping member completely wraps the front end of the drive motor shaft and electrically isolates the drive motor shaft from the power output shaft, and electrically isolates the drive motor shaft from the power transmission mechanism; The power transmission mechanism includes a planetary gear mechanism, and the planetary gear mechanism is transmission-connected to the electrical isolation package.

2. The low-cost juicer power drive device according to claim 1, characterized in that: The electric-insulating wrapping member is made of insulating material, and the top of the electric-insulating wrapping member is located between the front end surface of the drive motor shaft and the side surface of the output planetary carrier of the planetary gear mechanism facing the drive motor shaft; The top thickness of the electrical insulation package is not less than 2 mm, and the output planetary carrier of the planetary gear mechanism is drivingly connected to the power output shaft.

3. The low-cost juicer power drive device according to claim 2, characterized in that: The minimum distance between the front end surface of the drive motor shaft and the side surface of the output planetary carrier of the planetary gear mechanism facing the drive motor shaft is not less than 3 mm.

4. The low-cost juicer power drive device according to claim 1, characterized in that: The planetary gear mechanism includes a first planetary gear assembly, which includes a first sun gear, a first planetary gear, a first planet carrier and a first external fixed inner gear ring; the first sun gear is coaxially arranged with the drive motor shaft, and is located at the outer periphery of the electrical isolation package and is fixedly connected to the electrical isolation package; the first planetary gear is mounted on the first planet carrier and meshes with the outside of the first sun gear, the first planetary gear is meshed with the inside of the first external fixed inner gear ring, and the power output shaft is driven by the first planet carrier; The first planetary gear is connected to a first gear shaft for mounting the first planetary gear, the first gear shaft is made of a metal material and is fixedly mounted to the first planetary carrier; the minimum distance between the first gear shaft and the drive motor shaft is not less than 7 mm; The first planet carrier is made of metal material, and the top of the electric-insulating wrapping member is located between the front end surface of the drive motor shaft and the side surface of the first planet carrier facing the drive motor shaft; The minimum distance between the front end surface of the drive motor shaft and the side surface of the first planet carrier facing the drive motor shaft is not less than 3 mm.

5. The low-cost juicer power drive device according to claim 4, characterized in that: The first sun gear is made of insulating material, and the first sun gear is coaxially sleeved outside the electrical insulation package and is integrally formed with the electrical insulation package.

6. The low-cost juicer power drive device according to claim 4, characterized in that: The planetary gear mechanism includes a second planetary gear assembly driven by the first planet carrier; The second planetary gear assembly includes a second sun gear, a second planetary gear, a second planet carrier, and a second external fixed inner gear ring; the second sun gear is coaxially arranged with the drive motor shaft and fixedly mounted with the first planet carrier; the second planetary gear is mounted on the second planet carrier and meshes externally with the second sun gear, and the second planetary gear is meshed internally with the second external fixed inner gear ring. The second planetary gear is connected to a second gear shaft for mounting the second planetary gear, the second gear shaft is made of metal material and is fixedly mounted to the second planetary carrier; the power output shaft is fixedly connected to the second planetary carrier; the second planetary carrier is made of metal material.

7. The low-cost juicer power drive device according to claim 6, characterized in that: The first planetary gear and the second planetary gear are both made of plastic, and the second sun gear is fixedly mounted on the first planet carrier.

8. The low-cost juicer power drive device according to claim 2 or 3, characterized in that: The drive installation housing comprises a first cavity and a second cavity isolated from each other, and a drive motor is installed in the first cavity; An isolation plate is provided between the first cavity and the second cavity, an avoidance hole is provided on the isolation plate, the drive motor shaft extends from the drive motor and extends into the second cavity through the avoidance hole, and the power transmission mechanism is provided in the second cavity; The electric-insulating wrapping piece wraps the front end of the drive motor shaft, and the opening end of the electric-insulating wrapping piece faces the first cavity side and passes through the avoidance hole.

9. The low-cost juicer power drive device according to claim 8, characterized in that: A top cover is provided at the front end of the second cavity, one end of the power output shaft is placed in the second cavity and fixedly mounted to the output planetary carrier of the planetary gear mechanism, the other end of the power output shaft extends from the top cover, and a bearing is provided between the power output shaft and the top cover; a plurality of mounting columns are provided on the outer surface of the top cover.

10. A juicer, characterized in that: The juicer comprises the low-cost juicer power drive device according to any one of claims 1 to 9.

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