Stirring driving device of ice cream machine

Abstract

The invention discloses an ice cream machine stirring driving device which comprises a motor and a transmission assembly, the transmission assembly comprises a base and an upper cover, a mounting cavity is formed between the base and the upper cover and used for mounting a change gear set, the motor is arranged on one side of the upper cover, and the change gear set is used for transmitting output power of the motor to a stirring blade of an ice cream machine. The change gear set comprises three planetary gears meshed with an output shaft of the motor, the upper cover is provided with an inner gear ring matched with the three planetary gears, a planet carrier is installed at the bottoms of the planetary gears, the inner gear ring is meshed with the planetary gears to limit the planetary gears to rotate around the inner gear ring in the circumferential direction so as to drive the planet carrier to rotate, and a fixing rod is inserted into the planet carrier. The other end of the fixing rod is inserted into a first transmission gear of the change gear set, the first transmission gear is used for transmitting power to an output gear, and the output gear is provided with a fixing groove used for fixedly installing a transmission shaft of a stirring blade.

Description

Technical Field

[0001] This invention relates to the field of ice cream machine technology, and in particular to a stirring drive device for an ice cream machine. Background Technology

[0002] Existing ice cream machine mixing drive units generally suffer from large size and unreasonable spatial layout. Traditional drive units, due to their less compact structural design, result in components occupying excessive space during installation, increasing the overall size of the ice cream machine and hindering its handling and storage. Furthermore, an unreasonable spatial layout may affect power transmission efficiency, leading to unstable and inefficient operation of the mixing blades, ultimately impacting the quality of the ice cream. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a stirring drive device for an ice cream machine, which, through a reasonable structural design, reduces the size of the device, optimizes the internal space layout, improves power transmission efficiency, and makes the stirring blades operate more stably and efficiently, thereby improving the quality of ice cream production.

[0004] According to a first aspect of the present invention, an ice cream machine stirring drive device includes a motor and a transmission assembly. The transmission assembly includes a base and a top cover, with a mounting cavity formed between the base and the top cover. The mounting cavity is used to mount a variable speed gear set. The motor is disposed on one side of the top cover. The variable speed gear set is used to transmit the output power of the motor to the stirring blade of the ice cream machine. The variable speed gear set includes three planetary gears that mesh with the output shaft of the motor. The top cover is provided with an internal gear ring that meshes with the three planetary gears. A planet carrier is mounted on the bottom of the planetary gears. The internal gear ring meshes with the planetary gears to restrict the planetary gears from rotating circumferentially around the internal gear ring, thereby driving the planet carrier to rotate. A fixing rod is inserted into the planet carrier. The other end of the fixing rod is inserted into a first transmission gear of the variable speed gear set. The first transmission gear is used to transmit power to an output gear. The output gear is provided with a fixing groove for fixing the transmission shaft on which the stirring blade is mounted.

[0005] The ice cream machine stirring drive device according to an embodiment of the present invention has at least the following beneficial effects: The transmission component of the present invention adopts a structure in which the base and the top cover form an installation cavity, and the components such as the speed-changing gear set are compactly installed in the installation cavity. The motor is located on one side of the top cover. This layout avoids the space waste caused by the scattered installation of components in traditional devices, effectively reduces the volume of the entire drive device, and makes the ice cream machine more compact and portable, making it convenient for users to use in different scenarios. Through reasonable structural design, the installation positions of various components are more compact and orderly. The cooperation between the planetary gear and the internal gear ring, and the connection method between the planetary carrier and the fixed rod and the first transmission gear, make full use of the space in the installation cavity, avoiding interference and redundant space between components. At the same time, this space-optimized layout is also conducive to heat dissipation, improving the stability and reliability of the device. Furthermore, the transmission method of planetary gear and internal gear ring can realize multi-level speed change and power distribution. During the rotation and revolution of the planetary gear, the power output by the motor can be smoothly transmitted to the planetary carrier, and then transmitted to the output gear through the fixed rod and the first transmission gear. This transmission method reduces power loss during transmission, improves power transmission efficiency, and allows the mixing blades to receive more stable and sufficient power, thus ensuring a more even and smooth mixing effect for the ice cream. Furthermore, the meshing of the internal gear ring and planetary gears, as well as the connection between the planetary carrier and the fixed rod, provides stable support and transmission for the entire transmission system. During operation, it effectively reduces gear wobble and misalignment, lowers noise and wear caused by component instability, extends the service life of the device, and also improves the stability of the mixing blades, ensuring the continuity and quality of ice cream production. According to some embodiments of the present invention, the fixing rod is a square rod or an irregularly shaped rod, the irregularly shaped rod is a semi-cylinder, and the planetary carrier and the first transmission gear are respectively provided with square holes or irregularly shaped holes for the fixing rod to pass through.

[0006] According to some embodiments of the present invention, the transmission gear set includes a first transmission gear and a second transmission gear. The first transmission gear, the second transmission gear and the output gear are arranged adjacent to each other along the length direction of the base. The first transmission gear is connected to the bottom of the planetary carrier and meshes with the second transmission gear. The second transmission gear transmits power to the output gear.

[0007] According to some embodiments of the present invention, the transmission gear set further includes a third transmission gear, which is coaxially arranged with the second transmission gear and located above the second transmission gear, and meshes with the output gear.

[0008] According to some embodiments of the present invention, the base is provided with a fixing seat, the fixing seat is located at the bottom of the mounting cavity, the fixing seat is provided with a fixing groove, the fixing groove is inserted into a connecting shaft, and the connecting shaft is fixedly connected to the second transmission gear and the third transmission gear.

[0009] According to some embodiments of the present invention, the gear ring of the third transmission gear is smaller than that of the second transmission gear, and the transmission ratio between the third transmission gear and the second transmission gear is not higher than 1 / 3.

[0010] According to some embodiments of the present invention, the base is provided with a plurality of reinforcing ribs, which are evenly arranged around the periphery of the fixed base.

[0011] According to some embodiments of the present invention, the upper cover is provided with a positioning groove, the positioning groove accommodating the top of the connecting shaft for positioning and installation of the second transmission gear and the third transmission gear.

[0012] According to some embodiments of the present invention, the base is provided with an annular support platform, which is used to support the first transmission gear, the second transmission gear, and the output wheel to be flush.

[0013] According to some embodiments of the present invention, the upper cover is provided with a through first mounting opening, the first mounting opening being located on the opposite side of the motor, so as to allow the drive shaft to be mounted on the same side of the motor; and / or, The second mounting port is located on the opposite side of the motor, so that the drive shaft can be mounted on the back side of the motor.

[0014] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the ice cream machine stirring drive device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the ice cream machine stirring drive device from another perspective according to an embodiment of the present invention; Figure 3 This is an exploded view of the ice cream machine stirring drive device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the base of the ice cream machine stirring drive device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the upper cover of the ice cream machine stirring drive device according to an embodiment of the present invention; Figure 6This is a schematic diagram of a planetary gear and a transmission gear set according to another embodiment of the present invention.

[0016] Reference numerals: Motor 100; Output shaft 110; Planetary gear 120; Planetary carrier 130; First transmission gear 140; Fixed rod 150; Base 200; First mounting port 201; Fixed seat 210; Connecting shaft 211; Reinforcing rib 212; Second transmission gear 220; Third transmission gear 230; Output gear 240; Annular support platform 250; Top cover 300; Second mounting port 301; Internal gear ring 310; Positioning groove 320. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0018] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this invention in conjunction with the specific content of the technical solution. In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0021] Reference Figure 1 , Figure 2 Figure 3 , Figure 4 , Figure 5 and Figure 6 The present invention discloses a stirring drive device for an ice cream machine, comprising a motor 100 and a transmission assembly. The transmission assembly consists of a base 200 and a top cover 300, with a mounting cavity formed between the base 200 and the top cover 300 for mounting a speed-changing gear set. The motor 100 is disposed on one side of the top cover 300, a layout that provides a basis for subsequent space optimization.

[0022] The transmission gear set is the core component of this invention. It includes three planetary gears 120 that mesh with the output shaft 110 of the motor 100. An internal gear ring 310, which engages with these three planetary gears 120, is provided on the upper cover 300. A planet carrier 130 is mounted on the bottom of each planetary gear 120. During operation, after the motor 100 starts, its output shaft 110 begins to rotate. Because the planetary gears 120 mesh with the output shaft 110 of the motor 100, the power output by the motor 100 is directly transmitted to the planetary gears 120. Simultaneously, the internal gear ring 310 meshes with the planetary gears 120. This meshing relationship restricts the planetary gears 120 from rotating circumferentially around the internal gear ring 310, so that the planetary gears 120 can only rotate on their own axis while also revolving around the output shaft 110 of the motor 100, thereby driving the planet carrier 130 to rotate. A fixing rod 150 is inserted into the planet carrier 130, and the other end of the fixing rod 150 is inserted into the first transmission gear 140 of the transmission gear set. When the planetary carrier 130 rotates, it transmits power to the first transmission gear 140 via the fixed rod 150, further transmitting the power. The first transmission gear 140 then transmits the power to the output gear 240, which has a fixed groove for fixing the drive shaft of the stirring blade. In this way, the power output by the motor 100, after a series of transmissions through the gear set, ultimately drives the stirring blade to rotate, completing the stirring of the ice cream.

[0023] Reference Figure 6 In other embodiments, the internal gear ring 310 and the upper cover 300 are separate, that is, the internal gear ring 310 is separately fitted on the outer periphery of the three planetary gears 120, and the internal gear ring 310 is coaxially arranged with the output shaft 110.

[0024] Before actual use, firstly, assemble the base 200 and the top cover 300 to ensure a sealed and stable mounting cavity is formed between them. The size and shape of the mounting cavity are designed according to the dimensions of the gear set to ensure that the gear set can be accurately installed inside the cavity. Install the three planetary gears 120 into positions corresponding to the output shaft 110 of the motor 100, ensuring good meshing with the output shaft 110 of the motor 100. At the same time, precisely machine the internal gear ring 310 of the top cover 300 to ensure the fitting accuracy with the planetary gears 120. Then, insert one end of the fixing rod 150 into the planet carrier 130 and the other end into the first transmission gear 140 to complete the power transmission connection from the planet carrier 130 to the first transmission gear 140. Next, properly assemble the first transmission gear 140 with other related gears and the output gear 240 so that they can cooperate to transmit power. Finally, install the drive shaft of the stirring blade in the fixing groove of the output gear 240, ensuring that the drive shaft is installed stably.

[0025] Next, install the other components of the gear set onto the planetary carrier 130 in sequence, ensuring a good connection and transmission relationship. Install the motor 100 on one side of the top cover 300 and secure it firmly using a suitable connection method. Ensure the output shaft 110 of the motor 100 accurately meshes with the planetary gear 120 to guarantee smooth power transmission. Install the output gear 240 onto the output end of the gear set, ensuring good meshing. Machine a fixing groove on the output gear 240, insert the drive shaft of the stirring blade into the fixing groove, and secure it firmly using a suitable fixing method to ensure the stirring blade rotates stably with the output gear 240. After assembly, debug and test the ice cream machine's stirring drive device. Start the motor 100 and observe the operation of the planetary gear 120, gear set, and output gear 240, checking for abnormal noise, jamming, or other problems. Simultaneously, check if the rotation of the stirring blade is smooth and if the speed meets requirements. Through debugging and testing, ensure the device functions normally and achieves the expected stirring effect.

[0026] It should be noted that when the motor 100 starts, its output shaft 110 begins to rotate. Since multiple planetary gears 120 mesh with the output shaft 110 of the motor 100, the rotational power of the motor 100 is transmitted to the planetary gears 120. Simultaneously, the internal gear ring 310 on the upper cover 300 engages with the planetary gears 120, causing the planetary gears 120 to rotate around the output shaft 110 of the motor 100 while rotating on their own axis. The planetary carrier 130 at the bottom of the planetary gears 120 serves to support and transmit power, transmitting the motion of the planetary gears 120 to the connected gear set. The gear set further modifies and transmits the power, adjusting the magnitude and direction of the power to suit the driving of the mixing blades. The gear set meshes with the output gear 240, transmitting power to the output gear 240. The fixing groove on the output gear 240 is used to fix and install the drive shaft of the mixing blades. When the output gear 240 rotates, it drives the drive shaft of the mixing blades to rotate as well, thereby achieving the mixing of the ice cream ingredients by the mixing blades.

[0027] It is understood that the transmission assembly of the present invention adopts a structure in which the base 200 and the upper cover 300 form a mounting cavity, compactly installing components such as the speed-changing gear set within the mounting cavity. The motor 100 is located on one side of the upper cover 300. This layout avoids the space waste caused by the dispersed installation of components in traditional devices, effectively reducing the size of the entire drive device, making the ice cream machine more compact and portable, and convenient for users to use in different scenarios. Through reasonable structural design, the installation positions of various components are more compact and orderly. The cooperation between the planetary gear 120 and the internal gear ring 310, and the connection between the planetary carrier 130 and the fixed rod 150 and the first transmission gear 140, all make full use of the space within the mounting cavity, avoiding interference and redundant space between components. At the same time, this space-optimized layout is also conducive to heat dissipation, improving the stability and reliability of the device. Furthermore, the transmission method using the planetary gear 120 and the internal gear ring 310 enables multi-level speed change and power distribution. During its rotation and revolution, the planetary gear 120 smoothly transmits the power output from the motor 100 to the planetary carrier 130, and then to the output gear 240 via the fixed rod 150 and the first transmission gear 140. This transmission method reduces power loss during transmission, improves power transmission efficiency, and allows the stirring blades to receive more stable and sufficient power, thus ensuring a more uniform and delicate mixing effect for the ice cream. Furthermore, the meshing of the internal gear ring 310 with the planetary gear 120 and the connection between the planetary carrier 130 and the fixed rod 150 provide stable support and transmission for the entire transmission system. During operation, this effectively reduces gear wobble and misalignment, lowers noise and wear caused by component instability, extends the service life of the device, and improves the stability of the stirring blades' operation, ensuring the continuity and quality of ice cream production.

[0028] Reference Figure 3 and Figure 4 The fixed rod 150 is a square rod or an irregularly shaped rod. The irregularly shaped rod is semi-cylindrical. The planet carrier 130 and the first transmission gear 140 are respectively provided with square holes or irregularly shaped holes for the fixed rod 150 to pass through. In this embodiment, the fixed rod 150 is an irregularly shaped rod in the form of a semi-cylindrical shape, and the planet carrier 130 and the first transmission gear 140 are respectively provided with irregularly shaped holes. During assembly, the flat part of the irregularly shaped rod is oriented in a specific direction, and one end is first inserted into the irregularly shaped hole of the planet carrier 130. The curved surface of the semi-cylindrical rod fits with the curved surface of the irregularly shaped hole, and the flat part fits with the flat part of the irregularly shaped hole. This unique shape design prevents the irregularly shaped rod from rotating relative to the other end within the irregularly shaped hole. Next, the other end of the irregularly shaped rod is inserted into the irregularly shaped hole of the first transmission gear 140 to complete the connection. When the planet carrier 130 rotates, the irregularly shaped rod will drive the first transmission gear 140 to rotate synchronously, realizing stable power transmission.

[0029] In other embodiments, when the fixed rod 150 is a square rod, square holes are respectively provided on the planetary carrier 130 and the first transmission gear 140. During assembly, one end of the square rod is accurately inserted into the square hole of the planetary carrier 130, ensuring a tight fit between the square rod and the square hole. Since the four sides of the square rod fit against the four inner walls of the square hole, the relative rotation of the square rod within the square hole is effectively restricted. Then, the other end of the square rod is inserted into the square hole of the first transmission gear 140, again ensuring a tight fit. Thus, when the planetary carrier 130 rotates under the drive of the planetary gear 120, the square rod rotates along with the planetary carrier 130. Due to the restrictive effect between the square rod and the square hole of the first transmission gear 140, the square rod can stably transmit power to the first transmission gear 140, achieving reliable power transmission.

[0030] Reference Figure 3 and Figure 4 The transmission gear set includes a first transmission gear 140, a second transmission gear 220, and a third transmission gear 230. When assembling the ice cream machine's stirring drive unit, after installing components such as the motor 100, planetary gear 120, and planetary carrier 130, the transmission gear set is installed. The first transmission gear 140 is installed at the bottom of the planetary carrier 130, ensuring a secure connection. Next, the second transmission gear 220 is placed in a suitable position on the base 200, allowing it to accurately mesh with the first transmission gear 140. This sequentially adjacent arrangement makes the power transmission path clearer and more direct. After the first transmission gear 140 receives power from the planetary carrier 130, it quickly transmits it to the second transmission gear 220, which then transmits it to the output gear 240, reducing power dispersion and loss during transmission and improving transmission efficiency. Simultaneously, the sequentially adjacent arrangement along the length of the base 200 optimizes the space utilization within the mounting cavity, making the entire transmission assembly structure more compact and further reducing the size of the device.

[0031] Furthermore, after completing the installation of the transmission gear set, the third transmission gear 230 is installed. The third transmission gear 230 is coaxially mounted on top of the second transmission gear 220, and the two are fixed together using a specific connection structure, ensuring accurate meshing between the third transmission gear 230 and the output gear 240. For example, in a production workshop, workers first place a keyed connecting sleeve onto the shaft of the second transmission gear 220, then install the third transmission gear 230 onto the connecting sleeve via a key connection, adjusting its position to ensure proper meshing between the third transmission gear 230 and the output gear 240. The third transmission gear 230, coaxially positioned with the second transmission gear 220 and located above it, meshes with the output gear 240. This design increases the flexibility of the transmission. The output torque and speed can be adjusted by selecting different gear combinations according to different stirring requirements. For example, when a larger stirring torque is needed, the second transmission gear 220 can transmit power; when a higher stirring speed is needed, the third transmission gear 230 can transmit power. At the same time, this structure does not add excessive space, maintaining the overall compactness of the device.

[0032] The base 200 is equipped with a fixing seat 210, located at the bottom of the mounting cavity. The fixing seat 210 has a fixing groove into which a connecting shaft 211 is inserted. The connecting shaft 211 fixably connects the second transmission gear 220 and the third transmission gear 230. During the assembly of the transmission gear set, the fixing seat 210 is first installed at the bottom of the mounting cavity of the base 200, and the fixing groove on the fixing seat 210 is precisely machined according to design requirements. Then, the connecting shaft 211 is inserted into the fixing groove, ensuring its stability. Next, the second transmission gear 220 and the third transmission gear 230 are sequentially installed on the connecting shaft 211, and fixedly connected to the connecting shaft 211 using a suitable fixing method. The installation of the fixing seat 210 and the fixing of the second and third transmission gears 230 via the connecting shaft 211 enhance the stability of the transmission gear set. During device operation, it effectively reduces gear wobble and misalignment, lowers noise and wear caused by gear instability, and improves the service life of the device. At the same time, this fixing method has a simple structure, is easy to install and disassemble, and is beneficial for later maintenance and repair.

[0033] In some embodiments, the gear ring of the third transmission gear 230 is smaller than that of the second transmission gear 220, and the transmission ratio between the third transmission gear 230 and the second transmission gear 220 is not higher than 1 / 3. When designing the third transmission gear 230 and the second transmission gear 220, based on the working requirements of the stirring blades, the gear ring of the third transmission gear 230 is determined to be smaller than that of the second transmission gear 220, and their transmission ratio is set to be no higher than 1 / 3. For example, the second transmission gear 220 has 60 teeth, the third transmission gear 230 has 20 teeth, and the transmission ratio is 1 / 3. In actual production, precise gear machining processes ensure that the number of teeth and dimensions of the gears meet the design requirements. The design of the third transmission gear 230 having a smaller gear ring than the second transmission gear 220 and a transmission ratio no higher than 1 / 3 allows power to be transmitted at a higher speed to the output gear 240 when high-speed stirring is required, driving the stirring blades to rotate rapidly and meeting the stirring needs of different ice cream ingredients. Simultaneously, the lower transmission ratio also helps improve the smoothness of the transmission, reducing the impact and vibration caused by high-speed transmission and ensuring the stable operation of the device.

[0034] Reference Figure 5 The base 200 is provided with multiple reinforcing ribs 212, which are evenly distributed around the periphery of the fixed seat 210. During the manufacturing of the base 200, multiple reinforcing ribs 212 are evenly distributed around the periphery of the fixed seat 210. The shape and size of the reinforcing ribs 212 are determined according to the stress conditions and design requirements of the base 200. For example, triangular reinforcing ribs 212 are used, with one rib at regular angles along the periphery of the fixed seat 210. During the injection molding process of the base 200, the reinforcing ribs 212 are integrally molded with the base 200. The even distribution of multiple reinforcing ribs 212 around the periphery of the fixed seat 210 enhances the strength and rigidity of the base 200. During the operation of the device, the base 200 needs to withstand the forces and vibrations generated by components such as the transmission gear set. The reinforcing ribs 212 can effectively disperse these forces and vibrations, reducing deformation and damage to the base 200, and improving the overall stability and reliability of the device. At the same time, the addition of the reinforcing ribs 212 does not significantly increase the volume and weight of the base 200, maintaining the miniaturized and lightweight characteristics of the device.

[0035] Reference Figure 5The upper cover 300 is provided with a positioning groove 320, which accommodates the top of the connecting shaft 211 for positioning and installation of the second transmission gear 220 and the third transmission gear 230. During the manufacturing of the upper cover 300, the positioning groove 320 is provided at the corresponding position. The size and shape of the positioning groove 320 are precisely designed according to the size and shape of the top of the connecting shaft 211. During assembly, the top of the connecting shaft 211 is inserted into the positioning groove 320, allowing the second transmission gear 220 and the third transmission gear 230 to be accurately installed and positioned. For example, in an assembly workshop, after the worker installs the upper cover 300 on the base 200, they align the top of the connecting shaft 211 with the positioning groove 320 and insert it, ensuring the gear set is installed in the correct position accurately. The positioning groove 320 provided in the upper cover 300 provides accurate positioning and installation for the second transmission gear 220 and the third transmission gear 230. During assembly, the gear set can be installed in the correct position quickly and accurately, improving assembly efficiency. Meanwhile, the positioning groove 320 can restrict the movement of the gear set, ensure the meshing accuracy of the gears during operation, reduce noise and wear caused by gear position deviation, and improve the performance and service life of the device.

[0036] Reference Figure 5 Furthermore, the base 200 is provided with an annular support platform 250, which is used to support the first transmission gear 140, the second transmission gear 220, and the output wheel to be flush. The height and dimensions of the annular support platform 250 are designed according to the heights of the first transmission gear 140, the second transmission gear 220, and the output wheel to ensure that it can support the first transmission gear 140, the second transmission gear 220, and the output wheel to be flush. It can be understood that by supporting the first transmission gear 140, the second transmission gear 220, and the output wheel to be flush, the meshing between the gears is more stable and accurate. During power transmission, it can reduce the impact and vibration caused by inconsistent gear heights, reduce gear wear, and improve transmission efficiency and stability. At the same time, this design optimizes the layout of the gear set, making the entire transmission component structure more compact and helping to reduce the size of the device.

[0037] Reference Figure 1 In some embodiments, the upper cover 300 is provided with a through first mounting opening 201, located on the opposite side of the motor 100, so that the drive shaft can be mounted on the same side of the motor 100. The first mounting opening 201 on the upper cover 300 allows the drive shaft to be mounted on the same side of the motor 100, further optimizing the spatial structure of the device. It reduces the bending and winding of the drive shaft within the device, making power transmission more direct and efficient. At the same time, this design facilitates the installation and maintenance of the drive shaft, improving the overall performance and reliability of the device.

[0038] Reference Figure 2In other embodiments, the base 200 is provided with a through second mounting port 301, located on the opposite side from the motor 100, for mounting the drive shaft on the back side of the motor 100. The second mounting port 301 on the base 200 provides another mounting method for the drive shaft, allowing it to be mounted on the back side of the motor 100. This design increases the flexibility of device installation, allowing for the selection of a suitable installation method based on the actual usage environment and space requirements. Simultaneously, it further optimizes the internal spatial layout of the device, making the arrangement of various components more rational and contributing to a reduction in the device's size.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A stirring drive device for an ice cream machine, characterized in that, The device includes a motor and a transmission assembly. The transmission assembly includes a base and a top cover, with a mounting cavity formed between the base and the top cover for mounting a variable speed gear set. The motor is located on one side of the top cover. The variable speed gear set transmits the output power of the motor to the stirring blades of the ice cream machine. The variable speed gear set includes three planetary gears that mesh with the output shaft of the motor. The top cover is provided with an internal gear ring that meshes with the three planetary gears. A planet carrier is mounted on the bottom of the planetary gears. The internal gear ring meshes with the planetary gears to restrict the planetary gears from rotating circumferentially around the internal gear ring, thereby driving the planet carrier to rotate. A fixing rod is inserted into the planet carrier. The other end of the fixing rod is inserted into the first transmission gear of the variable speed gear set. The first transmission gear transmits power to the output gear. The output gear is provided with a fixing groove for fixing the drive shaft of the stirring blades.

2. The ice cream machine stirring drive device according to claim 1, characterized in that, The fixing rod is a square rod or an irregularly shaped rod. The irregularly shaped rod is semi-cylindrical. The planetary carrier and the first transmission gear are respectively provided with square holes or irregularly shaped holes for the fixing rod to pass through.

3. The ice cream machine stirring drive device according to claim 1, characterized in that, The transmission gear set includes a first transmission gear and a second transmission gear. The first transmission gear, the second transmission gear, and the output gear are arranged adjacent to each other along the length of the base. The first transmission gear is connected to the bottom of the planetary carrier and meshes with the second transmission gear. The second transmission gear transmits power to the output gear.

4. The ice cream machine stirring drive device according to claim 3, characterized in that, The transmission gear set further includes a third transmission gear, which is coaxially arranged with the second transmission gear and located above the second transmission gear, meshing with the output gear.

5. The ice cream machine stirring drive device according to claim 4, characterized in that, The base is provided with a fixing seat, which is located at the bottom of the mounting cavity. The fixing seat is provided with a fixing groove, and a connecting shaft is inserted into the fixing groove. The connecting shaft is fixedly connected to the second transmission gear and the third transmission gear.

6. The ice cream machine stirring drive device according to claim 5, characterized in that, The gear ring of the third transmission gear is smaller than that of the second transmission gear, and the transmission ratio between the third transmission gear and the second transmission gear is not higher than 1 / 3.

7. The ice cream machine stirring drive device according to claim 6, characterized in that, The base is provided with multiple reinforcing ribs, which are evenly distributed around the periphery of the fixed base.

8. The ice cream machine stirring drive device according to claim 4, characterized in that, The upper cover is provided with a positioning groove, which accommodates the top of the connecting shaft for positioning and installation of the second transmission gear and the third transmission gear.

9. The ice cream machine stirring drive device according to claim 3, characterized in that, The base is provided with an annular support platform, which is used to support the first transmission gear, the second transmission gear, and the output wheel to be flush.

10. The ice cream machine stirring drive device according to claim 1, characterized in that, The upper cover is provided with a through first mounting port, which is located on the opposite side of the motor, so that the drive shaft can be mounted on the same side of the motor; and / or, The base is provided with a through second mounting port, which is located on the opposite side of the motor, so that the drive shaft can be mounted on the back side of the motor.

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