Magnetic transmission structure of ice cream machine

Abstract

The utility model discloses a magnetic transmission structure of an ice cream machine, which comprises a mounting platform, and a power output element is rotatably arranged on the mounting platform; a first magnetic transmission element is arranged on the power output element, and a second magnetic transmission element is arranged on the lifting assembly. The first magnetic transmission element and the second magnetic transmission element are matched in a magnetic attraction mode, and the power output element rotates relative to the mounting platform to drive the lifting assembly to operate. During normal operation, when the force for driving the lifting assembly to rotate by the power output element is greater than the suction force of the first magnetic transmission element and the second magnetic transmission element, the power output element idles relative to the lifting assembly, so that the transmission system is protected. According to the utility model, not only can the motor be prevented from stalling, but also the tool bit driven by the motor can keep rotating cutting work all the time so as to realize continuous ice shaving, and the problem that the machine is protected to stop and cannot complete manufacturing after stalling is avoided.

Description

Technical Field

[0001] The utility model relates to a magnetic transmission structure of an ice cream machine. Background Art

[0002] Prior art, such as Chinese utility model 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 knife shaft by a belt transmission, and the second output shaft is connected to the screw nut by a planetary gear set.

[0003] Based on the above, the transmission connection between the existing planetary gear set and the screw nut is a rigid connection. This rigid connection structure is used in an ice cream machine driven by a single motor. The technical problem it has is that due to the use of a single motor, when working, the rotation of the cutter head to shave ice will inevitably drive the cutter head to move downward synchronously. When the cutter head's shaving depth of ice does not reach the preset descent height of the cutter head, the cutter head will be blocked by the ice and unable to move downward. At this time, the screw assembly cannot be raised or lowered normally, and the cutter head cannot continue to move downward, which will cause the drive motor to stall or even be damaged.

[0004] In the prior art, in order to prevent the motor from stalling, the motor current or the motor temperature is detected. When the current is too large or the motor temperature is too high, the motor is shut down 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, seriously affecting the user experience.

[0005] At the same time, in the prior art, in an ice shaving process, the upper body moves from the first position to the second position. During this process, the upper body relies on the first microswitch and the second microswitch to determine whether the upper body has reached the first position or the 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 microswitch or the second microswitch fails and is damaged, the circuit board of the ice cream machine cannot receive the position information of the upper body. In this case, when the upper body reaches the first position or the second position, the motor will continue to drive the lifting assembly to operate. At this time, the lifting assembly will be running all the time, and the upper body has moved to the maximum stroke. At this time, the upper body is forcibly driven, which may cause the entire body to break, and there may even be a safety hazard of accidentally injuring the user when the body breaks. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a magnetic transmission structure that can disconnect the lifting component from the power output element.

[0007] A magnetic transmission structure of an ice cream machine designed for this purpose comprises a mounting platform, on which a power output element is rotatably arranged;

[0008] The power output element is provided with a first magnetic transmission element, and the lifting assembly is provided with a second magnetic transmission element;

[0009] The first magnetic transmission element and the second magnetic transmission element are magnetically matched, and the power output element rotates relative to the installation platform to drive the lifting assembly to operate.

[0010] Preferably, a speed change assembly and a motor are arranged on the mounting platform, the speed change assembly includes a planetary wheel carrier, a plurality of planetary gears are arranged circumferentially on the planetary wheel carrier, the planetary gears are rotatably arranged on the planetary wheel carrier, a first gear ring and a second gear ring are arranged on the outer side of the planetary wheel carrier, the planetary gears are respectively meshed with the first gear ring and the second gear ring, the first gear ring is fixedly arranged on the mounting platform, and the second gear ring is rotatably arranged on the mounting platform;

[0011] A plurality of planetary gear combinations constitute the power input element;

[0012] A first driving gear is arranged on the motor shaft of the motor, and the first driving gear is arranged between the plurality of planetary gears and meshes with the planetary gears;

[0013] The second ring gear constitutes the power output element.

[0014] Preferably, the lifting assembly includes a first threaded transmission member and a second threaded transmission member, the first threaded transmission member is threadedly connected to the second threaded transmission member, the second threaded transmission member is fixedly arranged on the machine base, the first threaded transmission member is rotatably arranged on the mounting platform, and the second magnetic transmission element is arranged on the first threaded transmission member.

[0015] Preferably, the second gear ring is provided with a transmission ring extending downward, the first threaded transmission member is provided with a columnar transmission part inserted into 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.

[0016] Compared with the prior art, the utility model is provided with a first magnetic transmission element on the power output end, and a second magnetic transmission element on the lifting assembly. The first magnetic transmission element and the second magnetic transmission element cooperate with each other through magnetic attraction so that the power output end drives the lifting assembly to operate. During normal operation of the utility model, the motor can synchronously drive the speed change assembly to operate and drive the knife shaft to rotate. During this process, the speed change assembly cooperates with the first magnetic transmission element and the second magnetic transmission element to drive the lifting assembly to operate, so that the mobile platform can move downward relative to the machine base, and the knife shaft can rotate and move downward at the same time. When the depth of ice shaving by the blade head does not reach the preset descending height of the blade head, the blade head is blocked by the ice material, and the moving resistance of the mobile platform is greater than the suction force of the first magnetic transmission element and the second magnetic transmission element, the power output end will rotate relative to the lifting assembly, that is, slipping will occur. At this time, the lifting assembly is in a stationary state, but the motor still synchronously drives the knife shaft to rotate to shave ice. When the cutter head shaves out a space where the cutter head can move, the moving resistance of the mobile platform is less than the suction force of the first magnetic transmission element and the second magnetic transmission element, and the first magnetic transmission element and the second magnetic transmission element cooperate to transmit again, driving the lifting assembly to operate so that the mobile platform and the cutter shaft move downward to perform the mobile ice shaving work again. Compared with the existing anti-jamming protection, the utility model can not only prevent the motor from being blocked, but also disconnect the power output end from the lifting assembly when the cutter head is blocked and cannot move, and the cutter head driven by the motor will keep rotating and cutting to achieve continuous ice shaving, avoiding the problem of the machine being shut down for protection after being blocked and unable to complete the production. In the utility model, when the sensor for sensing the position of the mobile platform fails under the transmission of the first magnetic transmission element and the second magnetic transmission element, when the mobile platform moves to the maximum stroke, the mobile platform is blocked and cannot move, and the resistance to the movement of the mobile platform is greater than the suction force of the first magnetic transmission element and the second magnetic transmission element, the power output end will rotate relative to the lifting component, that is, slipping will occur. At this time, the lifting component is in a stationary state, thereby protecting the entire transmission system and avoiding damage to the transmission system. At the same time, it can prevent the mobile platform from being driven all the time and forcibly moving to cause damage to the entire machine and affect the life safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the cross-sectional structure of an ice cream machine;

[0018] Figure 2 It is one of the cross-sectional structural diagrams of the transmission structure of the ice cream machine;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the speed change assembly in the utility model;

[0020] Figure 4 It is a schematic diagram of the exploded structure of the speed change assembly in the utility model;

[0021] Figure 5 It is a cross-sectional structural diagram of the magnetic transmission structure in the utility model;

[0022] Figure 6 The second schematic diagram of the cross-section structure of the transmission structure of the ice cream machine;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the second gear ring in the utility model;

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the transmission ring and the columnar transmission part in the utility model; DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-Figure 8 , a magnetic transmission structure of an ice cream machine, the ice cream machine includes a base 10, the base 10 is provided with a mounting platform 20 that can move longitudinally relative to the base 10, the mounting platform 20 is provided with a knife shaft 100 and a lifting assembly 40, the lifting assembly 40 is connected to the base 10 to drive the mounting platform 20 to move longitudinally relative to the base 10, the mounting 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 element 510 and a power output element 520, the motor shaft 310 of the motor 30 is drivingly connected with the power input element 510 and the knife shaft 100;

[0027] The power output element 520 is provided with a first magnetic transmission element 710, and the lifting assembly 40 is provided with a second magnetic transmission element 720. The first magnetic transmission element 710 and the second magnetic transmission element 720 are magnetically matched to make the power output element 520 rotate relative to the installation platform 20 to drive the lifting assembly 40 to operate.

[0028] During normal operation of the utility model, the motor can synchronously drive the speed change component to operate and drive the knife shaft to rotate. During this process, the speed change component cooperates with the first magnetic transmission element and the second magnetic transmission element to drive the lifting component to operate, so that the installation platform can move downward relative to the machine base, and the knife shaft rotates and moves downward at the same time. When the ice shaving depth of the knife head does not reach the preset descending height of the knife head, when the knife head is blocked by ice, and the resistance of the movement of the installation platform is greater than the suction force of the first magnetic transmission element and the second magnetic transmission element, the power output element and the lifting component rotate relative to each other, so that the lifting component is in a stationary state. At this time, the motor is still running to drive the knife shaft to rotate for shaving ice. When the knife head shaves out space, the knife head is no longer constrained by the movement resistance. The first magnetic transmission element and the second magnetic transmission element cooperate again to transmit, driving the lifting component to operate so that the installation platform and the knife shaft move downward to shave ice again.

[0029] In the utility model, when the sensor sensing the position of the installation platform fails and the installation platform moves to the maximum stroke, the installation platform is blocked and cannot move, and the resistance to the movement of the moving platform is greater than the suction force of the first magnetic transmission element and the second magnetic transmission element, the power output element and the lifting assembly rotate relative to each other, so that the lifting assembly is in a static state, thereby protecting the entire transmission system and avoiding damage to the transmission system. At the same time, it can prevent the moving platform from being driven all the time and forcibly moving to cause damage to the entire machine and affect the life safety of the user.

[0030] During normal operation, the force of the power output element 520 driving the lifting assembly to rotate is F1, and the suction force of the first magnetic transmission element 710 and the second magnetic transmission element 720 is F2. During normal operation, F2>F1, so the power output element 520 drives the lifting assembly to operate, so that the installation platform moves up and down, and the knife shaft rotates to shave ice; when the limit switch used to sense the position of the installation platform fails or the bearing capacity of shaved ice is too large, F2<F1, the power output end 520 will move relative to the lifting assembly 40, that is, slip, at this time the lifting part will not move up and down, but the motor still drives the knife shaft to drive the knife head to shave ice.

[0031] See also Figure 3 and Figure 4 The speed change assembly 50 includes a planetary wheel carrier 540, on which a plurality of planetary gears 550 are arranged along a circumference, and the planetary gears 550 are rotatably arranged on the planetary wheel carrier 540, and a first gear ring 560 and a second gear ring 570 are arranged on the outer side of the planetary wheel carrier 540, and the planetary gears 550 are respectively meshed with the first gear ring 560 and the second gear ring 570, and the first gear ring 560 is fixedly arranged on the mounting platform 20, and the second gear ring 570 is rotatably arranged on the mounting platform 20;

[0032] A plurality of planetary gears 550 are combined to form a power input element 510;

[0033] A first driving gear 300 is disposed on the motor shaft 310 of the motor 30 , and the first driving gear 300 is disposed between the plurality of planetary gears 550 and meshes with the planetary gears 550 ;

[0034] The second ring gear 570 constitutes the power output element 520 .

[0035] The motor shaft 310 of the motor 30 drives the first drive gear 300 to rotate, and the first drive gear 300 drives the multiple planetary gears 550 to rotate. The planetary gears 550 are meshed with the first ring gear 560, so that the planetary gears 550 and the planetary wheel carrier 540 rotate relative to the first ring gear 560. During the rotation process, the planetary gears 550 drive the second ring gear 570 to rotate synchronously, thereby outputting power through the second ring gear 570 to drive the lifting assembly 40 to operate.

[0036] Furthermore, the motor shaft 310 is a gear shaft, and the first driving gear 300 and the motor shaft 310 are an integrated structure.

[0037] See also Figure 2 The lifting assembly 40 includes a first threaded transmission member 410 and a second threaded transmission member 420, the first threaded transmission member 410 is threadedly connected to the second threaded transmission member 420, the second threaded transmission member 420 is fixedly arranged on the machine base 10, the first threaded transmission member 410 is rotatably arranged on the mounting platform 20, and the second magnetic transmission element 720 is arranged on the first threaded transmission member 410.

[0038] Further, the first threaded transmission member 410 is a screw, and the second threaded transmission member 420 is a screw nut. A first guide rod 440 is provided on the mounting 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 plugged and matched with each other for guidance.

[0039] The second gear ring 570 is provided with a transmission ring 580 extending downward, the first threaded transmission member 410 is provided with a columnar transmission part 530 plugged 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. Under normal operation, under the cooperation of the first magnetic transmission element and the second magnetic transmission element, the transmission ring 580 drives the columnar transmission part 530 to rotate synchronously. When the cutter head is blocked and cannot move, the lifting assembly cannot operate normally. At this time, the transmission ring 580 rotates relative to the columnar transmission part 530, and the columnar transmission part 530 remains stationary until the cutter head has space to move.

[0040] Furthermore, a mounting groove 531 is provided on the columnar transmission part 530 , and the second magnetic transmission element 720 is disposed in the mounting groove 531 .

[0041] The first magnetic transmission element 710 and the second magnetic transmission element 720 are both magnets, and the number of the magnets is set according to different magnetic force requirements.

[0042] See also Figure 2 A transmission assembly 60 is provided on the mounting platform 20; 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 which are sequentially connected in transmission connection, the first gear 610 is connected in transmission connection with the motor shaft 310, and the fifth gear 650 is connected in transmission connection with the knife shaft 100.

[0043] Furthermore, a transmission element 660 is provided on the mounting platform 20 , the fifth gear 650 is connected to the transmission element 660 for transmission, a coupling transmission groove 670 is provided on the transmission element 660 , and the upper end of the knife shaft 100 is coupled to the coupling transmission groove 670 for transmission.

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0046] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A magnetic transmission structure of an ice cream machine, comprising a mounting platform (20), characterized in that: A power output element (520) is rotatably arranged on the installation platform (20); The power output element (520) is provided with a first magnetic transmission element (710), and the lifting component (40) is provided with a second magnetic transmission element (720); The first magnetic transmission element (710) and the second magnetic transmission element (720) are magnetically coupled, and the power output element (520) rotates relative to the installation platform (20) to drive the lifting assembly (40) to operate.

2. The magnetic transmission structure of an ice cream machine according to claim 1, characterized in that: A speed change assembly (50) and a motor (30) are arranged on the mounting platform (20); the speed change assembly (50) comprises a planetary wheel carrier (540); a plurality of planetary gears (550) are arranged along a circumference on the planetary wheel carrier (540); the planetary gears (550) are rotatably arranged on the planetary wheel carrier (540); a first gear ring (560) and a second gear ring (570) are arranged on the outer side of the planetary wheel carrier (540); the planetary gears (550) are respectively meshed with the first gear ring (560) and the second gear ring (570); the first gear ring (560) is fixedly arranged on the mounting platform (20); and the second gear ring (570) is rotatably arranged on the mounting platform (20); A first driving gear (300) is disposed on the motor shaft (310) of the motor (30), and the first driving gear (300) is disposed between a plurality of planetary gears (550) and meshes with the planetary gears (550); The second ring gear (570) constitutes the power output element (520).

3. The magnetic transmission structure of an ice cream machine according to claim 2, characterized in that: The lifting assembly (40) comprises a first threaded transmission member (410) and a second threaded transmission member (420), wherein the first threaded transmission member (410) is threadedly connected to the second threaded transmission member (420), the second threaded transmission member (420) is fixedly arranged on the machine base (10), the first threaded transmission member (410) is rotatably arranged on the mounting platform (20), and the second magnetic transmission element (720) is arranged on the first threaded transmission member (410).

4. The magnetic transmission structure of an ice cream machine according to claim 3, characterized in that: The second gear ring (570) is provided with a transmission ring (580) extending downward, the first threaded transmission member (410) is provided with a columnar transmission portion (530) inserted into the transmission ring (580), the second magnetic transmission element (720) is provided on the columnar transmission portion (530), and the first magnetic transmission element (710) is provided on the transmission ring (580).

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