Magnetic transmission protected ice cream machine structure

Abstract

The application discloses a magnetic transmission protected ice cream machine structure, which comprises a machine base, a movable platform longitudinally movable relative to the machine base arranged on the machine base, a cutter shaft and a lifting assembly arranged on the movable platform, the lifting assembly being connected with the machine base to drive the movable platform to longitudinally move relative to the machine base, a motor and a speed change assembly being arranged on the movable platform, the speed change assembly being provided with a power input end and a power output end, a motor shaft of the motor being in transmission connection with the power input end and the cutter shaft, a first magnetic force transmission element being arranged on the power output end, a second magnetic force transmission element being arranged on the lifting assembly, and the first magnetic force transmission element and the second magnetic force transmission element being in magnetic attraction cooperation to enable the power output end to drive the lifting assembly to operate.

Description

Technical Field

[0001] This invention relates to a structure for an ice cream machine with magnetic drive protection. Background Technology

[0002] Existing technology, such as Chinese invention patent application document, publication number CN117752007A, discloses a control method for an ice cream machine. In this technology, a first output shaft and a second output shaft are provided through the motor. The first output shaft is connected to the cutter shaft by a belt drive, and the second output shaft is connected to the lead screw nut by a planetary gear set.

[0003] Based on the above, the existing planetary gear set and lead screw nut transmission connection is a rigid connection. When this rigid connection structure is applied to a single motor driven ice cream machine, the technical problem is that, due to the use of a single motor, during operation, the rotation of the blade head to shave ice will inevitably drive the blade head to move downwards synchronously. When the shaving depth of the blade head does not reach the preset descent height of the blade head, the blade head will be blocked by the ice material and will not be able to move downwards. At this time, the lead screw assembly cannot rise and fall normally, and the inability of the blade head to continue to move downwards will cause the drive motor to stall or even be damaged.

[0004] In existing technologies, motor current or temperature is detected to prevent motor stalling. When the current is too high or the motor temperature is too high, the motor will stop for protection. This method of preventing stalling will cause the entire ice cream machine to stop working. Although this protection method can save the machine, it cannot complete the normal production process, which seriously affects the user experience.

[0005] Meanwhile, in the existing technology, during a shaved ice process, the upper body moves from a first position to a second position. During this process, the upper body relies on a first microswitch and a second microswitch to determine whether it has reached the first or second position, and then controls the motor to stop driving the lifting assembly. The technical problem with this control method is that when the first or second microswitch fails, the ice cream machine's circuit board cannot receive the position information of the upper body. In this case, when the upper body reaches the first or second position, the motor will still continue to drive the lifting assembly. This results in the lifting assembly running continuously while the upper body has already moved to its maximum stroke. Forcibly driving the upper body at this point can cause the entire machine to break, and there is even a safety hazard of accidentally injuring the user when the machine breaks. Summary of the Invention

[0006] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a single-motor drive that uses magnetic transmission to keep the blade rotating while shaving ice, and avoids overload shutdown or even damage to the motor structure of the ice cream machine by disconnecting the drive connection between the lifting assembly and the speed change assembly.

[0007] A magnetically driven protected ice cream machine structure designed for this purpose includes a base, on which a movable platform is provided that can move longitudinally relative to the base. A cutter shaft and a lifting assembly are provided on the movable platform. The lifting assembly is connected to the base and drives the movable platform to move longitudinally relative to the base. A motor and a speed-changing assembly are provided on the movable platform. The speed-changing assembly is provided with a power input end and a power output end. The motor shaft of the motor is connected to the power input end and the cutter shaft in a transmission connection.

[0008] A first magnetic transmission element is provided on the power output end, and a second magnetic transmission element is provided on the lifting assembly. The first magnetic transmission element and the second magnetic transmission element are magnetically attracted to each other, so that the power output end drives the lifting assembly to operate.

[0009] Preferably, the transmission assembly includes a planetary gear carrier, on which a plurality of planetary gears are arranged circumferentially. The planetary gears are rotatably mounted on the planetary gear carrier. A first gear ring and a second gear ring are provided on the outer side of the planetary gear carrier. The planetary gears mesh with the first gear ring and the second gear ring respectively. The first gear ring is fixedly mounted on the moving platform, and the second gear ring is rotatably mounted on the moving platform.

[0010] Multiple planetary gears are combined to form the power input end;

[0011] The motor shaft of the motor is provided with a first drive gear, which is disposed among a plurality of planetary gears and meshes with the planetary gears.

[0012] The second gear ring constitutes the power output end.

[0013] Preferably, the lifting assembly includes a first threaded drive component and a second threaded drive component, the first threaded drive component and the second threaded drive component are threadedly connected, the second threaded drive component is fixedly mounted on the base, the first threaded drive component is rotatably mounted on the moving platform, and the second magnetic drive element is mounted on the first threaded drive component.

[0014] Preferably, the second gear ring is provided with a downwardly extending transmission ring, the first threaded transmission member is provided with a columnar transmission part that interlocks with the transmission ring, the second magnetic transmission element is provided on the columnar transmission part, and the first magnetic transmission element is provided on the transmission ring.

[0015] Preferably, the mobile platform is equipped with a transmission component;

[0016] The transmission assembly includes a first gear, a second gear, a third gear, a fourth gear, and a fifth gear that are connected in sequence. The first gear is connected to the motor shaft, and the fifth gear is connected to the cutter shaft.

[0017] Compared with the prior art, this invention features a first magnetic transmission element on the power output end and a second magnetic transmission element on the lifting assembly. The first and second magnetic transmission elements magnetically engage to drive the lifting assembly from the power output end. During normal operation, the motor synchronously drives the transmission assembly and the cutter shaft. The transmission assembly, through the cooperation of the first and second magnetic transmission elements, drives the lifting assembly, allowing the moving platform to move downwards relative to the base, thus enabling the cutter shaft to rotate and move downwards simultaneously. When the ice-shaving depth of the cutter head does not reach the preset descent height, the cutter head is obstructed by ice material. When the moving resistance of the moving platform exceeds the attraction of the first and second magnetic transmission elements, the power output end will rotate relative to the lifting assembly, resulting in slippage. At this point, the lifting assembly is stationary, but the motor continues to synchronously drive the cutter shaft to rotate for ice shaving. When the cutter head carves out the space where it can move, the moving resistance of the moving platform is less than the attraction force of the first and second magnetic transmission elements. The first and second magnetic transmission elements then work together again to drive the lifting assembly, causing the moving platform and the cutter shaft to move downwards to resume the ice-shaving operation. Compared to existing anti-stalling protection systems, this invention not only prevents motor stalling, but also disconnects the power output from the lifting assembly when the cutter head is obstructed. Furthermore, the motor-driven cutter head continues to rotate and cut, ensuring continuous ice shaving and avoiding the problem of machine shutdown due to stalling, preventing the completion of the process.

[0018] In this invention, when the sensor sensing the position of the moving platform malfunctions, and the moving platform reaches its maximum stroke and becomes obstructed, causing it to be unable to move further, the power output end will rotate relative to the lifting assembly when the resistance to the moving platform exceeds the attraction force of the first and second magnetic transmission elements. This results in slippage, at which point the lifting assembly remains stationary, thus protecting the entire transmission system from damage. Simultaneously, it prevents the moving platform from being continuously driven and forcibly moved, which could damage the entire machine and endanger the user's safety. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of an ice cream machine;

[0020] Figure 2 One of the schematic cross-sectional views of the transmission system of an ice cream machine;

[0021] Figure 3 This is a three-dimensional structural diagram of the transmission component in this invention;

[0022] Figure 4 This is an exploded structural diagram of the transmission component in this invention;

[0023] Figure 5 This is a cross-sectional schematic diagram of the magnetic transmission structure in this invention;

[0024] Figure 6 This is the second cross-sectional structural diagram of the ice cream machine's transmission system.

[0025] Figure 7 This is a three-dimensional structural diagram of the second gear ring in this invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the transmission ring and the columnar transmission part in this invention; Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] See Figures 1-8 A magnetically driven ice cream machine structure includes a base 10, on which a moving platform 20 is provided that can move longitudinally relative to the base 10. A cutter shaft 100 and a lifting assembly 40 are provided on the moving platform 20. The lifting assembly 40 is connected to the base 10 to drive the moving platform 20 to move longitudinally relative to the base 10. A motor 30 and a speed change assembly 50 are provided on the moving platform 20. The speed change assembly 50 is provided with a power input end 510 and a power output end 520. The motor shaft 310 of the motor 30 is connected to the power input end 510 and the cutter shaft 100 in a transmission connection.

[0029] A first magnetic transmission element 710 is provided on the power output end 520, and a second magnetic transmission element 720 is provided on the lifting assembly 40. The first magnetic transmission element 710 and the second magnetic transmission element 720 magnetically cooperate to make the power output end 520 drive the lifting assembly 40 to operate.

[0030] In this invention, a cutter head is installed at the lower end of the cutter shaft 100, and the cutter head is used to contact the ice material in the material cup to shave ice.

[0031] During normal operation, the motor synchronously drives the speed-changing assembly and the cutter shaft. In this process, the speed-changing assembly, through the cooperation of the first and second magnetic transmission elements, drives the lifting assembly, allowing the moving platform to move downwards relative to the base. This enables the cutter shaft to rotate and move downwards simultaneously. When the ice-shaving depth of the cutter head does not reach the preset descent height, and the cutter head is blocked by ice, the resistance to the movement of the moving platform exceeds the attraction of the first and second magnetic transmission elements. At this point, the power output end rotates relative to the lifting assembly, causing the lifting assembly to remain stationary. The motor continues to operate, driving the cutter shaft to rotate and shave ice. When the cutter head has shaved out space, it is no longer constrained by the resistance to movement. The first and second magnetic transmission elements then cooperate again, driving the lifting assembly to operate and causing the moving platform and cutter shaft to move downwards again to continue the ice-shaving work.

[0032] In this invention, when the sensor sensing the position of the moving platform malfunctions, and the moving platform reaches its maximum stroke and becomes obstructed, causing it to be unable to move further, and the resistance to the moving platform's movement exceeds the attraction force of the first and second magnetic transmission elements, the power output end rotates relative to the lifting assembly, keeping the lifting assembly stationary. This protects the entire transmission system from damage and also prevents the moving platform from being continuously driven and forcibly moved, which could damage the entire machine and endanger the user's safety.

[0033] During normal operation, the force F1 that drives the lifting assembly to rotate at the power output end 520 is equal to the force F2 that attracts the first magnetic transmission element 710 and the second magnetic transmission element 720. Under normal operation, F2 > F1, so the power output end 520 drives the lifting assembly to operate, causing the moving platform to move up and down, while the cutter shaft rotates to perform the shaving action. When the limit switch used to sense the position of the moving platform fails or the load on the shaved ice is too high, F2 < F1, and the power output end 520 will move relative to the lifting assembly 40, i.e., slip. At this time, the lifting part will not move up and down, but the motor still drives the cutter shaft to drive the cutter head to shave the ice.

[0034] See Figure 3 and Figure 4 The transmission assembly 50 includes a planetary gear carrier 540, on which a plurality of planetary gears 550 are arranged circumferentially. The planetary gears 550 are rotatably mounted on the planetary gear carrier 540. A first gear ring 560 and a second gear ring 570 are provided on the outer side of the planetary gear carrier 540. The planetary gears 550 mesh with the first gear ring 560 and the second gear ring 570 respectively. The first gear ring 560 is fixedly mounted on the moving platform 20, and the second gear ring 570 is rotatably mounted on the moving platform 20.

[0035] Multiple planetary gears 550 are combined to form the power input end 510;

[0036] The motor shaft 310 of the motor 30 is provided with a first drive gear 300, which is disposed among a plurality of planetary gears 550 and meshes with the planetary gears 550.

[0037] The second gear ring 570 constitutes the power output end 520.

[0038] The motor shaft 310 of the motor 30 drives the first drive gear 300 to rotate, and the first drive gear 300 drives multiple planetary gears 550 to rotate. The planetary gears 550 mesh with the first gear ring 560, thereby realizing that the planetary gears 550 together with the planetary gear carrier 540 rotate relative to the first gear ring 560. During the rotation, the planetary gears 550 drive the second gear ring 570 to rotate synchronously, thereby outputting power through the second gear ring 570 to drive the lifting component 40 to operate.

[0039] Furthermore, the motor shaft 310 is a gear shaft, and the first drive gear 300 and the motor shaft 310 are an integral structure.

[0040] See Figure 2 The lifting assembly 40 includes a first threaded transmission component 410 and a second threaded transmission component 420. The first threaded transmission component 410 is threadedly connected to the second threaded transmission component 420. The second threaded transmission component 420 is fixedly mounted on the base 10. The first threaded transmission component 410 is rotatably mounted on the moving platform 20. The second magnetic transmission element 720 is mounted on the first threaded transmission component 410.

[0041] Furthermore, the first threaded transmission component 410 is a lead screw, and the second threaded transmission component 420 is a lead screw nut. A first guide rod 440 is provided on the moving platform 20, and a second guide rod 430 is provided on the base 10. The first guide rod 440 and the second guide rod 430 are interlocked and cooperate for guidance.

[0042] The second gear ring 570 is provided with a downwardly extending transmission ring 580, and the first threaded transmission component 410 is provided with a columnar transmission part 530 that interlocks with the transmission ring 580. The second magnetic transmission element 720 is disposed on the columnar transmission part 530, and the first magnetic transmission element 710 is disposed on the transmission ring 580. Under normal operating conditions, the transmission ring 580 drives the columnar transmission part 530 to rotate synchronously under the combined action of the first and second magnetic transmission elements. However, when the cutter head is obstructed and cannot move, the lifting assembly cannot operate normally. At this time, the transmission ring 580 rotates relative to the columnar transmission part 530, while the columnar transmission part 530 remains stationary until the cutter head has room to move.

[0043] Furthermore, the columnar transmission part 530 is provided with a mounting groove 531, and the second magnetic transmission element 720 is disposed in the mounting groove 531.

[0044] Both the first magnetic drive element 710 and the second magnetic drive element 720 are magnets, and their number is set according to different magnetic force requirements.

[0045] See Figure 2 The mobile platform 20 is provided with a transmission assembly 60; the transmission assembly 60 includes a first gear 610, a second gear 620, a third gear 630, a fourth gear 640 and a fifth gear 650 connected in sequence, the first gear 610 is connected in transmission to the motor shaft 310 and the fifth gear 650 is connected in transmission to the cutter shaft 100.

[0046] Furthermore, the mobile platform 20 is provided with a transmission element 660, the fifth gear 650 is connected to the transmission element 660 for transmission, the transmission element 660 is provided with a coupling transmission groove 670, and the upper end of the cutter shaft 100 is coupled to the coupling transmission groove 670 for transmission.

[0047] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship 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 limitations on this invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A magnetically driven ice cream machine structure, comprising a base (10), wherein a movable platform (20) is disposed on the base (10) and is longitudinally movable relative to the base (10), wherein a cutter shaft (100) and a lifting assembly (40) are disposed on the movable platform (20), the lifting assembly (40) being connected to the base (10) to drive the movable platform (20) to move longitudinally relative to the base (10), characterized in that: The mobile platform (20) is provided with a motor (30) and a speed change assembly (50). The speed change assembly (50) is provided with a power input end (510) and a power output end (520). The motor shaft (310) of the motor (30) is connected to the power input end (510) and the cutter shaft (100) in a transmission connection. A first magnetic drive element (710) is provided on the power output end (520), and a second magnetic drive element (720) is provided on the lifting assembly (40). The first magnetic drive element (710) and the second magnetic drive element (720) are magnetically attracted to each other so that the power output end (520) drives the lifting assembly (40) to run. The transmission assembly (50) includes a planetary gear carrier (540), on which a plurality of planetary gears (550) are arranged circumferentially. The planetary gears (550) are rotatably mounted on the planetary gear carrier (540). A first gear ring (560) and a second gear ring (570) are provided on the outer side of the planetary gear carrier (540). The planetary gears (550) mesh with the first gear ring (560) and the second gear ring (570) respectively. The first gear ring (560) is fixedly mounted on the moving platform (20), and the second gear ring (570) is rotatably mounted on the moving platform (20). Multiple planetary gears (550) are combined to form the power input end (510). The motor shaft (310) of the motor (30) is provided with a first drive gear (300), which is disposed among a plurality of planetary gears (550) and meshes with the planetary gears (550); The second gear ring (570) constitutes the power output end (520); The lifting assembly (40) includes a first threaded drive component (410) and a second threaded drive component (420). The first threaded drive component (410) is threadedly connected to the second threaded drive component (420). The second threaded drive component (420) is fixedly mounted on the base (10). The first threaded drive component (410) is rotatably mounted on the moving platform (20). The second magnetic drive element (720) is mounted on the first threaded drive component (410). The second gear ring (570) is provided with a downwardly extending transmission ring (580), the first threaded transmission member (410) is provided with a columnar transmission part (530) that interlocks with the transmission ring (580), the second magnetic transmission element (720) is provided on the columnar transmission part (530), and the first magnetic transmission element (710) is provided on the transmission ring (580).

2. The structure of an ice cream machine with magnetic transmission protection according to claim 1, characterized in that: The mobile platform (20) is provided with a transmission assembly (60); The transmission assembly (60) includes a first gear (610), a second gear (620), a third gear (630), a fourth gear (640), and a fifth gear (650) that are connected in sequence. The first gear (610) is connected in transmission to the motor shaft (310), and the fifth gear (650) is connected in transmission to the cutter shaft (100).

3. The structure of an ice cream machine with magnetic transmission protection according to claim 2, characterized in that: The mobile platform (20) is provided with a transmission element (660), the fifth gear (650) is connected to the transmission element (660) for transmission, the transmission element (660) is provided with a coupling transmission groove (670), and the upper end of the cutter shaft (100) is coupled to the coupling transmission groove (670) for transmission.

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