Transmission mechanism and cold drink making equipment

Abstract

The invention discloses a transmission mechanism and cold drink making equipment in the technical field of cold drink equipment. The transmission mechanism comprises a driving wheel set and a parallel positioning structure. The transmission wheel set comprises a planet carrier and a transmission disc, the parallel positioning structure is arranged between the planet carrier and the transmission disc and comprises a positioning column and a positioning hole matched with the positioning column, one of the transmission disc and the planet carrier is provided with the positioning column, and the other one of the transmission disc and the planet carrier is provided with the positioning hole. Through mutual cooperation of the positioning columns and the positioning holes, the transmission disc and the planet carrier can be restrained to be parallel to each other in the assembling or moving process, inclination or dislocation of the transmission disc and the planet carrier due to machining errors, assembling deviation or stress deformation is avoided, and the stable parallel position relation between the transmission disc and the planet carrier is formed. The planetary gears can keep a good meshing relation with high consistency, local excessive abrasion caused by uneven stress distribution is prevented, and the service life of the transmission mechanism is prolonged.

Description

Technical Field

[0001] This invention belongs to the technical field of cold beverage equipment, specifically relating to a transmission mechanism and a cold beverage equipment. Background Technology

[0002] Common beverage cooling equipment includes a motor and a stirring mechanism. The motor drives the transmission mechanism to stir and cool the ingredients at high speed, producing a smooth, slushy drink. A typical transmission mechanism consists of multiple gears or other transmission components. These components need to be fixed in the appropriate positions to ensure smooth power transmission.

[0003] Planetary gear trains, as a common transmission mechanism, include a sun gear, planet gears, a planet carrier, and a drive plate. The planet carrier and the drive plate are fixed circumferentially relative to each other. The planet gears are rotatably connected between the planet carrier and the drive plate via a rotating shaft. The sun gear meshes with multiple planet gears simultaneously and drives the planet gears to rotate on their own axis and the planet carrier and the drive plate to revolve around the sun gear.

[0004] This conventional transmission mechanism requires a high degree of parallelism in the assembly of the planetary carrier and the transmission disc. However, in practice, due to limitations in machining precision, the parallelism between the planetary carrier and the transmission disc varies significantly across different planetary gear trains, making it difficult to maintain consistent parallelism. In some planetary gear trains, the parallelism between the planetary carrier and the transmission disc is poor, resulting in different meshing angles between each planet gear and the sun gear. This can lead to problems such as poor meshing between the sun gear and planet gears, or excessive localized stress causing severe gear wear. Summary of the Invention

[0005] The purpose of this invention is to disclose a transmission mechanism and a refrigeration beverage device that can improve the parallelism between the planetary carrier and the transmission disk, reduce the bit diagram of poor gear meshing caused by the non-parallelism between the planetary carrier and the transmission disk, and improve the service life of the refrigeration beverage device.

[0006] To achieve the above objectives, the present invention discloses a transmission mechanism for a transmission mechanism, comprising: A transmission gear set, comprising a planetary carrier and a transmission disk, wherein a plurality of planetary gears are arranged in a ring between the transmission disk and the planetary carrier, and a rotating shaft passes through the center of rotation of each planetary gear, and the two ends of the rotating shaft are respectively mounted on the planetary carrier and the transmission disk; A parallel positioning structure is provided between the planetary carrier and the transmission disk. The parallel positioning structure is used to maintain the parallelism between the planetary carrier and the transmission disk. The parallel positioning structure includes a positioning post and a positioning hole that cooperates with the positioning post. In the transmission disk and the planetary carrier, one of them is provided with the positioning post and the other is provided with the positioning hole.

[0007] As an optional implementation, at least two positioning posts are provided, and multiple positioning posts are evenly spaced around the center of the planetary carrier; each positioning post is located between two adjacent planetary gears.

[0008] As an optional implementation, the end of the positioning post that mates with the positioning hole is provided with a positioning surface, the positioning surface is provided with a positioning protrusion, the positioning protrusion is inserted into the positioning hole, and the positioning surface abuts against the surface where the positioning hole is located.

[0009] As an optional implementation, the positioning post is disposed on the planetary carrier, and the positioning post is integrally formed with the planetary carrier, and the positioning hole is disposed on the transmission disk.

[0010] As an optional implementation, the side of the positioning post facing the planetary gear has a concave arc-shaped sidewall, and a portion of the planetary gear is located within the arc-shaped sidewall.

[0011] As an optional implementation, the minimum distance between the arcuate sidewall and the tooth tip of the corresponding planetary gear is 0.5-2 mm.

[0012] As an optional implementation, the positioning post has a fixing hole on the side near the transmission disk, and the transmission disk has a protrusion that is embedded in the fixing hole at the position corresponding to the fixing hole.

[0013] As an optional implementation, the transmission gear set includes a first planetary gear set and a second planetary gear set. The transmission disk of the first planetary gear set is provided with a gear post for outputting torque. The gear post is located at the rotation center of the second planetary gear set and meshes with the planetary gears of the second planetary gear set.

[0014] As an optional implementation, it includes a main drive gear, the main drive gear set being disposed at the rotation center of the first planetary gear set and meshing with the planetary gears of the first planetary gear set; the rotation center of the main drive gear is provided with a central positioning hole, and the rotation center of the first transmission disk is provided with a protrusion, the protrusion being embedded in the central positioning hole.

[0015] Another aspect of the present invention discloses a refrigerated beverage device, including a body and the aforementioned transmission mechanism, wherein the transmission mechanism is disposed on the body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: A parallel positioning structure is positioned between the planetary carrier and the transmission disc. This structure includes a positioning pin and a positioning hole that mates with the pin. One of the transmission disc and the planetary carrier has a positioning pin, and the other has a positioning hole. The interaction between the positioning pin and the positioning hole optimizes the relative parallel position of the transmission disc and the planetary carrier, ensuring a stable parallel relationship. This promotes good and consistent meshing of the planetary gears, prevents excessive localized wear due to uneven stress distribution, and extends the service life of the transmission mechanism. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the transmission wheel assembly of the present invention; Figure 2 This is an exploded view of the first planetary gear set according to the first embodiment of the present invention; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a structural diagram of the first planetary gear set according to the second embodiment of the present invention; Figure 5 This is an exploded view of the first planetary gear set according to the second embodiment of the present invention; Figure 6 This is a structural diagram of the planetary carrier according to the second embodiment of the present invention; Figure 7 This is a cross-sectional view of the gearbox of the present invention; Figure 8 yes Figure 7 Enlarged view of point B in the middle; Figure 9 This is a cross-sectional view of the main drive gear of the present invention; Figure 10 This is a cross-sectional view of the transmission disc of the present invention.

[0019] Explanation of key figure labels: 1. First planetary gear set; 11. Planetary carrier; 12. Planetary gears; 121. Shaft; 13. Transmission disc; 131. Protruding post; 132. Gear post; 133. Positioning hole; 134. Mounting hole; 135. Protrusion; 14. Positioning pin; 141. Positioning surface; 142. Positioning protrusion; 143. Arc-shaped sidewall; 144. Fixing hole; 2. Second planetary gear set; 3. Main drive gear; 31. Connecting part; 32. Transmission part; 321. Center positioning hole; 4. Casing. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to include a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0024] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0025] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0026] Please see Figures 1 to 2As shown, this application embodiment provides a transmission mechanism, including a transmission wheel set and a parallel positioning structure. The transmission wheel set includes a planetary carrier 11 and a transmission disk 13. A plurality of planetary gears 12 arranged in a ring are provided between the transmission disk 13 and the planetary carrier 11. A rotating shaft 121 passes through the rotation center of each planetary gear 12. The two ends of the rotating shaft 121 are respectively installed on the planetary carrier 11 and the transmission disk 13.

[0027] Multiple planetary gears 12 can evenly distribute the load, effectively reducing the stress on individual parts and improving the overall load-bearing capacity and transmission stability. Furthermore, the simultaneous meshing or rolling of multiple planetary gears 12 achieves multi-contact point coordinated transmission, making the transmission mechanism's operation more continuous and smooth, and reducing the adverse effects of impact and vibration on the transmission mechanism.

[0028] The rotating shaft 121 not only provides rotational support for the planetary gears 12, but also serves as a crucial link connecting the planetary carrier 11 and the transmission disk 13, influencing the overall assembly geometry. Mounting holes 134 are provided on both ends of the rotating shaft 121, corresponding to the two ends of the planetary carrier 11 and the transmission disk 13. The planetary carrier 11 and the transmission disk 13 achieve initial parallel positioning through the rotating shaft 121, enabling stable transmission of the planetary gears 12.

[0029] A parallel positioning structure is disposed between the planetary carrier 11 and the transmission disk 13. The parallel positioning structure is used to maintain the parallelism between the planetary carrier 11 and the transmission disk 13. The parallel positioning structure includes a positioning post 14 and a positioning hole 133 that cooperates with the positioning post 14. In the transmission disk 13 and the planetary carrier 11, one is provided with a positioning post 14 and the other is provided with a positioning hole 133.

[0030] Although the machining accuracy of the parts themselves has a significant impact on the parallelism of the planetary carrier 11 and the transmission disk 13 assembly, the cooperation of the locating pin 14 and the locating hole 133 can, to a certain extent, compensate for minor deviations in machining or assembly, thereby improving the overall system's fault tolerance and practical performance. When assembling the transmission mechanism, the locating pin 14 and the locating hole 133 can serve as assembly datums, guiding the planetary carrier 11 and the transmission disk 13 to be positioned quickly and accurately, reducing manual alignment errors and improving assembly efficiency and consistency.

[0031] The locating pin 14 and the locating hole 133 work together to constrain the transmission disc 13 and the planetary carrier 11 to remain parallel during assembly or movement, preventing tilting or misalignment due to machining errors, assembly deviations, or deformation under stress. This optimizes the relative parallel position of the transmission disc 13 and the planetary carrier 11, ensuring a stable parallel relationship. This also helps maintain a good and consistent meshing relationship among the planetary gears 12, preventing excessive local wear due to uneven stress distribution and extending the service life of the transmission mechanism.

[0032] There is a large torque between the planetary carrier 11 and the transmission disk 13. With the increase of usage time, the shaft 121 connecting the planetary carrier 11 and the transmission disk 13 is prone to deformation, which in turn changes the meshing state of the planetary gears 12, eventually leading to local component damage and reducing the service life of the transmission mechanism.

[0033] The engagement between the positioning pin 14 and the positioning hole 133 not only controls parallelism but also adds a rigid connection point between the transmission disc 13 and the planetary carrier 11. This helps to distribute the torque acting on the rotating shaft 121 and suppresses relative rotation, tilting, or wobbling of the transmission disc 13 and the planetary carrier 11 during transmission. This improves the smoothness and durability of the transmission mechanism.

[0034] Please see Figure 2 As shown, in the first embodiment, at least two positioning posts 14 are provided, and multiple positioning posts 14 are evenly spaced around the center of the planet carrier 11, with each positioning post 14 located between two adjacent planetary gears 12.

[0035] The planetary gears 12 are typically arranged evenly in a ring around the planet carrier 11. There is unoccupied space between adjacent planetary gears 12, where the positioning pin 14 is placed. This avoids interference with the planetary gears 12 themselves and their shafts 121, achieving a compact structural layout and space reuse. The positioning pin 14 does not occupy the main radial or axial space of the planetary gears 12, thus neither hindering the installation of the planetary gears 12 nor interfering with their rotation or stress state, ensuring the overall functional integrity and ease of assembly of the transmission mechanism.

[0036] Multiple positioning posts 14 are evenly distributed around the planetary carrier 11, which can constrain the relative position of the transmission disc 13 and the planetary carrier 11 from multiple directions, avoiding local stress concentration or tilting problems that may be caused by single-point positioning. At the same time, they can evenly distribute the internal stress of the mechanism and suppress deformation and misalignment of the transmission disc 13 and the planetary carrier 11. When the transmission disc 13 and the planetary carrier 11 are subjected to loads, thermal deformation, or assembly stress, the multiple positioning posts 14 can work together to suppress the relative tilt, offset, or torsion between them, thereby more effectively maintaining the parallelism and flatness between them. Since each positioning post 14 is located between two adjacent planetary gears 12, this layout often has geometric symmetry with the arrangement of the planetary gears 12, which helps the overall force balance and vibration suppression of the transmission mechanism and improves the smoothness of the transmission mechanism.

[0037] Please see Figure 3 As shown, in some embodiments, the end of the positioning post 14 that mates with the positioning hole 133 is provided with a positioning surface 141, the positioning surface 141 is provided with a positioning protrusion 142, the positioning protrusion 142 is inserted into the positioning hole 133, and the positioning surface 141 abuts against the surface where the positioning hole 133 is located.

[0038] The positioning protrusion 142 is inserted into the positioning hole 133, forming a precise constraint similar to a shaft-hole fit. This effectively restricts the radial movement and angular rotation of the positioning pin 14 within the positioning hole 133, thereby significantly improving the relative positional accuracy between the transmission disk 13 and the planetary carrier 11. The positioning surface 141 directly contacts the plane containing the positioning hole 133, effectively restricting the axial movement of the planetary carrier 11 and the transmission disk 13, increasing the contact area, and enhancing the parallelism between the planetary carrier 11 and the transmission disk 13.

[0039] In some embodiments, the positioning post 14 is disposed on the planetary carrier 11, and the positioning post 14 is integrally formed with the planetary carrier 11, and the positioning hole 133 is disposed on the transmission disk 13.

[0040] Since the positioning pin 14 and the planetary carrier 11 are integrally formed, there are no assembly gaps, loose connections, or differences in thermal expansion between different materials, significantly improving the structural strength and connection reliability of the positioning pin 14. The integrally formed positioning pin 14 and planetary carrier 11 allow for easier control of machining accuracy, maintaining good dimensional accuracy of the positioning pin 14 and geometric tolerances including perpendicularity, coaxiality, and cylindricity. The machining consistency of different positioning surfaces 141 and positioning protrusions 142 is also better. This facilitates a good relative parallel positional relationship between the planetary carrier 11 and the transmission disc 13.

[0041] The positioning pin 14 and the planetary carrier 11 are integrally formed, simplifying the assembly process of the transmission mechanism. Only the mating relationship between the positioning hole 133 and the positioning pin 14 needs to be followed to directly assemble the planetary carrier 11 and the transmission disk 13, reducing the number of parts and lowering the probability of errors and assembly costs. In some embodiments, multiple positioning pins 14 and positioning holes 133 are mutually mating. The positioning pins 14 and the planetary carrier 11 are integrally formed using powder metallurgy, ensuring that the height of all positioning pins 14 is consistent. Similarly, the positioning holes 133 are formed in the transmission disk 13, ensuring that the depth of all positioning holes 133 is consistent. This, in turn, ensures that the limiting height of all mating positioning pins 14 and positioning holes 133 is consistent, thereby ensuring better parallelism between the planetary carrier 11 and the planetary carrier 13.

[0042] Please see Figures 4 to 6As shown, in the second embodiment, the side of the positioning post 14 facing the planetary gear 12 is a concave arc-shaped sidewall 143, and a portion of the planetary gear 12 is located within the arc-shaped sidewall 143. The positioning post 14 has two sides facing the planetary gear 12, both of which are concave arc-shaped sidewalls 143. A planetary gear 12 is positioned between adjacent arc-shaped sidewalls 143 of two adjacent positioning posts 14, with the portion of the planetary gear 12 near the adjacent arc-shaped sidewalls 143 located within the corresponding arc-shaped sidewalls 143. When the planetary gear 12 rotates at high speed, due to centrifugal force, the lubricating oil on the planetary gear 12 is often thrown out, resulting in insufficient lubrication of the planetary gear 12, which in turn leads to increased noise and wear. This application, by providing arc-shaped sidewalls 143 on both sides of the planetary gear 12, can effectively prevent the lubricating oil on the planetary gear 12 from being thrown out by centrifugal force, ensuring that the planetary gear 12 has sufficient lubricating oil to maintain lubrication.

[0043] The main function of the positioning pin 14 is to cooperate with the positioning hole 133 to achieve parallel positioning and rigid connection between the planetary carrier 11 and the transmission disk 13. The concave arc-shaped sidewall 143 of the positioning pin 14 faces the planetary gear 12 and is spatially close to the side of the planetary gear 12, achieving a highly compact transmission mechanism. On the one hand, the arc-shaped sidewall 143 can also serve as a visual or assembly guide surface to help position the relative position of the planetary gear 12 and the positioning pin 14, improving assembly convenience. On the other hand, in general gear transmission, lubricating oil needs to be added to maintain good lubrication at the gear meshing point. The arc-shaped sidewall 143 can form a barrier on the side of the planetary gear 12, preventing the lubricating oil from being prematurely thrown off the surface of the planetary gear 12 when it rotates. Under the action of the arc-shaped sidewall 143, the lubricating oil will not be thrown too far away from the planetary gear 12, and a stable lubricating oil film can be formed near the planetary gear 12, keeping the planetary gear 12 in a good lubrication state, which helps to reduce wear caused by gear meshing transmission.

[0044] In some alternative embodiments, the positioning post 14 has a triangular cross-section, which can provide strong support for the planetary gear 12.

[0045] In some embodiments, the minimum distance between the arcuate sidewall 143 and the tooth tip of the corresponding planetary gear 12 is 0.5-2 mm.

[0046] When the tooth tip distance between the arc-shaped sidewall 143 and the planetary gear 12 is too small, i.e., less than 0.5mm, frictional contact between the planetary gear 12 and the arc-shaped sidewall 143 is likely to occur due to factors such as part machining errors, assembly deviations, thermal expansion, vibration, or impact. Once contact occurs, it will lead to increased energy consumption and operating noise of the planetary gear 12, seriously affecting the transmission accuracy and service life of the transmission mechanism. Therefore, maintaining a clearance of at least 0.5mm is the minimum engineering requirement to ensure that the planetary gear 12 and the arc-shaped sidewall 143 do not come into contact safely.

[0047] If the gap between the arc-shaped sidewall 143 and the tooth tip is too large, such as greater than 2mm, the lubricating oil is easily thrown quickly to the inner wall surface of the arc-shaped sidewall 143. Due to the large gap, it is impossible to form a lubricating oil accumulation layer in the gap between the tooth tip surface of the planetary gear 12 and the arc-shaped sidewall 143, and thus it is impossible to form a continuous and effective oil film near the tooth surface of the planetary gear 12.

[0048] When the gap is controlled between 0.5-2mm, such as 0.5mm, 1mm, 1.5mm and 2mm, when the lubricating oil is thrown out by the rotating planetary gear 12, it will be blocked by the arc-shaped sidewall 143 and accumulate in the gap area. When the planetary gear 12 passes through the arc-shaped sidewall 143, it will bring some lubricating oil and take some away, so that there is always enough lubricating oil on the planetary gear 12, thereby maintaining a more stable lubricating oil film at the tooth tip and meshing area, which can reduce wear, reduce friction and dissipate heat.

[0049] Furthermore, the curvature of the arc-shaped sidewall 143 is slightly less than that of the planetary gear 12. This means the arc-shaped surface of the planetary gear 12 is more concave than its tooth tip surface. This allows some of the lubricating oil on the planetary gear 12 to be stored within the concave surface of the arc-shaped sidewall 143. When the planetary gear 12 rotates, it carries away some of the lubricating oil from the concave surface of the arc-shaped sidewall 143 and brings in some lubricating oil. This not only maintains the lubrication of the planetary gear 12 but also facilitates heat exchange and improves heat dissipation. The heat generated by the rotation and meshing of the planetary gear 12 must be dissipated promptly to maintain the lubricating properties of the lubricating oil and prevent lubricating oil failure due to excessive temperature.

[0050] In addition, the positioning column 14 has a triangular cross-section and a large surface area. Furthermore, the positioning column 14 and the planetary carrier 11 are integrally formed using powder metallurgy, which provides strong heat transfer performance and ensures timely heat dissipation when the planetary gear 12 rotates.

[0051] In some embodiments, the positioning post 14 is provided with a fixing hole 144 on the side near the transmission disk 13, and the transmission disk 13 is provided with a protrusion 135 that is embedded in the fixing hole 144 at the position corresponding to the fixing hole 144.

[0052] The positioning pin 14 and the planetary carrier 11 are integrated, and the protrusion 135 and the transmission disk 13 are also integrally formed. This integral forming technology achieves a highly compatible structure based on the same material and uniform manufacturing precision. This ensures that the planetary carrier 11 and the transmission disk 13 have higher dimensional accuracy and better form and position tolerance control, as well as higher repeatability. When the protrusion 135 is embedded in the fixing hole 144, it forms a circumferential positioning of the planetary carrier 11 and the transmission disk 13, while also ensuring that the depth of the different protrusions 135 embedded in the fixing hole 144 remains consistent, maintaining good parallelism between different areas of the planetary carrier 11 and the transmission disk 13.

[0053] Please see Figures 7 to 8 As shown, in some embodiments, the transmission mechanism includes a gearbox, which includes a housing 4, and a transmission gear set is disposed inside the gearbox. The transmission gear set includes a first planetary gear set 1 and a second planetary gear set 2. The transmission disk 13 of the first planetary gear set 1 is provided with a gear post 132 for outputting torque. The gear post 132 is located at the rotation center of the second planetary gear set 2 and meshes with the planet gears 12 of the second planetary gear set 2.

[0054] The first planetary gear set 1 serves as the primary transmission stage. The gear post 132 on the transmission disc 13 extends into the central region of the second planetary gear set 2 and directly meshes with the planet gears 12 of the second planetary gear set 2. This transmits the torque and motion of the first stage transmission to the second stage, achieving secondary transmission or further speed reduction or torque increase. By using the gear post 132 as an intermediate transmission component, the torque of the first stage is directly transmitted to the planet gears 12 of the second-stage planetary gear set 2, eliminating the need for an additional intermediate shaft or complex transmission path, thus achieving a compact and highly efficient cascaded transmission.

[0055] Please see Figures 9 to 10 As shown, in some embodiments, the transmission mechanism further includes a main drive gear 3, the main drive gear set is located at the rotation center of the first planetary gear set 1 and meshes with the planetary gears 12 of the first planetary gear set 1; the rotation center of the main drive gear 3 is provided with a central positioning hole 321, and the rotation center of the first transmission disk 13 is provided with a protrusion 131, which is embedded in the central positioning hole 321.

[0056] In the planetary gear 12 system, all rotating components must maintain good coaxiality; otherwise, it will lead to problems such as eccentric wear, operating vibration and noise, and reduced transmission efficiency. The main drive gear 3 meshes with multiple planet gears 12 of the first planetary gear set 1, forming an initial coaxial constraint on the main drive gear 3. By aligning the central positioning hole 321 of the main drive gear 3 with the protrusion 131 at the center of the first transmission disc 13, it can be ensured that the main drive gear 3 and the first planetary gear set 1 maintain accurate coaxiality in the axial and radial directions, achieving alignment between the drive input and the geometric center of the planetary gear 12 system, thus ensuring the smoothness and reliability of the transmission from the source.

[0057] When the central hole and the protrusion 131 at the center of the transmission disk 13 are engaged, the structure not only plays a positioning role, but also resists the radial runout or yaw that the main drive gear 3 may generate during operation to a certain extent, constrains the relative displacement between the main drive gear 3 and the transmission disk 13, enhances the structural rigidity of the entire transmission mechanism, and reduces the risk of vibration and deformation.

[0058] In some embodiments, the main drive gear 3 includes a connecting portion 31 and a transmission portion 32. The connecting portion 31 and the transmission portion 32 are fixedly connected. The connecting portion 31 is used to fix the main drive gear 3 to the output end of the motor. The transmission portion 32 is used to mesh with the planetary gear 12 for transmission. The central positioning hole 321 is provided at the rotation center of the transmission portion 32. This facilitates direct alignment of the coaxiality of the transmission portion 32 and the protrusion 131, and helps maintain the coaxial transmission between the main drive gear 3 and the transmission disk 13.

[0059] In some embodiments, another aspect of the present invention discloses a refrigerated beverage device, including a body and the aforementioned transmission mechanism, wherein the transmission mechanism is disposed within the body. The transmission mechanism ensures the coaxiality and positional accuracy of the transmission mechanism, enabling the stirring shaft to accurately transmit power to the blades. This high-precision transmission avoids uneven stirring caused by blade misalignment or wobbling, ensuring the smoothness and taste of the smoothie, and improving the product performance of the refrigerated beverage device.

[0060] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A transmission mechanism, characterized in that, include: A transmission gear set, comprising a planetary carrier and a transmission disk, wherein a plurality of planetary gears are arranged in a ring between the transmission disk and the planetary carrier, and a rotating shaft passes through the center of rotation of each planetary gear, and the two ends of the rotating shaft are respectively mounted on the planetary carrier and the transmission disk; A parallel positioning structure is provided between the planetary carrier and the transmission disk. The parallel positioning structure is used to maintain the parallelism between the planetary carrier and the transmission disk. The parallel positioning structure includes a positioning post and a positioning hole that cooperates with the positioning post. In the transmission disk and the planetary carrier, one of them is provided with the positioning post and the other is provided with the positioning hole.

2. The transmission mechanism according to claim 1, characterized in that, The positioning posts are provided at least two, and the plurality of positioning posts are evenly spaced around the center of the planetary carrier; each positioning post is located between two adjacent planetary gears.

3. The transmission mechanism according to claim 1, characterized in that, The end of the positioning post that mates with the positioning hole is provided with a positioning surface. The positioning surface has a positioning protrusion. The positioning protrusion is inserted into the positioning hole, and the positioning surface abuts against the surface where the positioning hole is located.

4. The transmission mechanism according to claim 1, characterized in that, The positioning post is located on the planetary carrier and is integrally formed with the planetary carrier; the positioning hole is located on the transmission disc.

5. The transmission mechanism according to claim 1, characterized in that, The side of the positioning post facing the planetary gear has a concave arc-shaped sidewall, and part of the planetary gear is located inside the arc-shaped sidewall.

6. The transmission mechanism according to claim 5, characterized in that, The minimum distance between the arc-shaped sidewall and the corresponding tooth tip of the planetary gear is 0.5-2mm.

7. The transmission mechanism according to claim 5, characterized in that, The positioning post has a fixing hole on the side near the transmission disk, and the transmission disk has a protrusion that is inserted into the fixing hole at the position corresponding to the fixing hole.

8. The transmission mechanism according to claim 1, characterized in that, The transmission gear set includes a first planetary gear set and a second planetary gear set. The transmission disk of the first planetary gear set is provided with a gear post for outputting torque. The gear post is located at the rotation center of the second planetary gear set and meshes with the planetary gears of the second planetary gear set.

9. The transmission mechanism according to claim 1, characterized in that, It includes a main drive gear, the main drive gear set is located at the rotation center of the first planetary gear set and meshes with the planetary gears of the first planetary gear set; the rotation center of the main drive gear is provided with a central positioning hole, and the rotation center of the first transmission disk is provided with a protrusion, the protrusion being embedded in the central positioning hole.

10. A beverage cooling device, characterized in that, It includes a fuselage and a transmission mechanism as described in any one of claims 1-9, wherein the transmission mechanism is disposed on the fuselage.

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