A hand-held ice cream maker

Abstract

The utility model provides a handheld ice cream machine, including drive mechanism, stirring shaft, stirring knife, material cup, guide mechanism and elastic reset mechanism, the first end of stirring shaft is with the output end transmission connection of drive mechanism, the second end of stirring shaft is fixedly connected with stirring knife, and stirring knife is placed in material cup, drive mechanism can slide up and down along guide mechanism, and the stirring shaft with drive mechanism makes synchronous up and down movement, the upper end of elastic reset mechanism is connected with drive mechanism, and the lower end of elastic reset mechanism is connected with guide mechanism. Set up like this can make stirring knife reciprocate up and down in material cup, thereby realizes to the layering of frozen food material's stirring and smash, obtains the ice cream product of soft and fluffy quality finally, in addition guide mechanism and elastic reset mechanism can realize efficient cooperation with drive mechanism, more traditional screw rod, nut cover and drive mechanism's cooperation mode are more simplified.

Description

Technical Field

[0001] This utility model relates to the field of ice cream machine technology, and in particular to a handheld ice cream machine. Background Technology

[0002] There is currently an ice cream machine on the market that uses a pre-freezing-crushing process: first, the raw materials such as cream are frozen to a hard state, and then the frozen ingredients are crushed layer by layer from top to bottom by a stirring device, finally forming an ice cream product with a smooth texture.

[0003] For example, Chinese invention application CN116114781A discloses an ice cream machine, which includes a container with a hollow interior and an upward-facing storage compartment; a machine head disposed above the container and capable of being fitted into the opening of the container; a cutting blade disposed within the storage compartment of the container for cutting the ingredients within the storage compartment; and a drive mechanism, at least partially disposed within the machine head, for driving the cutting blade to rotate and simultaneously driving it to move up and down relative to the storage compartment; the drive mechanism includes a driver, a lead screw and nut mechanism, and a transmission shaft sleeve, wherein the transmission shaft sleeve extends vertically and is arranged to rotate about its own axis. The ice cream machine has a hollow interior forming a transmission channel. The lead screw and nut mechanism includes a lead screw and a nut sleeve that rotates synchronously with the transmission shaft sleeve. Both are at least partially arranged within the transmission channel. The nut sleeve is constrained on the lead screw and can move up and down relative to the transmission shaft sleeve under the rotation of the lead screw. The lower end of the nut sleeve extends into the storage bin, and the cutting blade is fixed relative to the lower end of the nut sleeve. The first output end of the driver is connected to the lead screw, thereby driving the lead screw to rotate around its own axis. The second output end of the driver is connected to the transmission shaft sleeve, thereby driving the transmission shaft sleeve to drive the nut sleeve and the cutting blade to rotate synchronously. While this ice cream machine can effectively crush frozen ingredients, it has significant drawbacks: the drive mechanism needs to coordinate the movement of multiple components such as the lead screw, nut sleeve, and transmission shaft sleeve simultaneously, leading to structural complexity, increasing production costs, and affecting assembly efficiency.

[0004] Therefore, simplifying the design of drive mechanisms and improving manufacturing convenience have become the technical bottlenecks that urgently need to be overcome in this field. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a handheld ice cream machine with a simple structure and convenient assembly.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This invention provides a handheld ice cream machine, including a drive mechanism, a stirring shaft, a stirring blade, a container, a guide mechanism, and a flexible reset mechanism. The first end of the stirring shaft is connected to the output end of the drive mechanism, and the second end of the stirring shaft is fixedly connected to the stirring blade. The stirring blade is placed inside the container. The drive mechanism can slide up and down along the guide mechanism, and the stirring shaft and drive mechanism move up and down synchronously. Specifically, the guide mechanism can be mounted on the container or placed directly on a worktable, as long as the guide mechanism can stably cooperate with the drive mechanism. When the drive mechanism slides up and down along the guide mechanism, the stirring shaft and stirring blade also move up and down with the drive mechanism. The upper end of the flexible reset mechanism is connected to the drive mechanism, and the lower end of the flexible reset mechanism is connected to the guide mechanism. In the initial state, the flexible reset mechanism is in a freely extended state, the drive mechanism is supported by the flexible reset mechanism and held in a specific position, and the stirring blade is located at the top of the container. During use, the user can periodically perform the following operations: 1) Apply downward pressure to the drive mechanism, causing it to move axially downward along the guide mechanism, driving the stirring shaft and stirring blade downward synchronously, while simultaneously compressing the elastic reset mechanism; 2) When the elastic reset mechanism reaches its maximum compression, release the pressure and pull the drive mechanism upward. Under the combined action of the restoring force of the elastic reset mechanism and the user's pulling force, the drive mechanism moves upward along the guide mechanism, eventually resetting to its initial position. Through this structural design, the stirring blade can reciprocate up and down within the mixing cup, thereby achieving layer-by-layer stirring and pulverizing of frozen ingredients, ultimately resulting in a soft and fluffy ice cream product. Furthermore, the guide mechanism and elastic reset mechanism can achieve efficient cooperation with the drive mechanism, simplifying the process compared to the traditional screw, nut, and drive mechanism connection.

[0007] According to the above scheme, the driving mechanism includes a main housing and a gearbox. The main housing can adopt an ergonomic grip design, and its outer contour is optimized to fit the palm's grip curve, allowing the user to hold the main housing firmly, thereby driving the entire driving mechanism to achieve reciprocating motion in the vertical direction. The first end of the gearbox is detachably and fixedly connected to the main housing, such as by a snap-fit ​​connection or a threaded locking connection. The second end of the gearbox can slide up and down within the guide mechanism. The upper end of the elastic reset mechanism is connected to the second end of the gearbox, and the lower end of the elastic reset mechanism is connected to the guide mechanism. The connection between the two ends of the elastic reset mechanism can be either abutment or fixed connection, as long as it does not affect the upward reset function of the elastic reset mechanism. A motor is installed inside the main housing, and the motor drives the stirring shaft to rotate through the gearbox. The above structural design allows for modular separation of the main housing (with built-in motor and control board), gearbox, guide mechanism, and elastic reset mechanism, facilitating separate assembly and debugging during manufacturing. Furthermore, the standardized interface design enables the main housing to be compatible with various mixing accessories, thereby expanding the equipment's functional applicability.

[0008] According to the above scheme, a control board is also provided inside the main housing. The control board is electrically connected to the motor. A gear set is provided inside the gearbox. The output end of the gear set is driven by the first end of the stirring shaft. More specifically, the drive connection can be a detachable fixed connection between the output end of the gear set and the stirring shaft, or a meshing connection, etc., as long as transmission can be achieved. The gear set forms a reduction mechanism through multi-stage gear pairs, converting the high-speed rotation output by the motor into a low-speed rotation of the stirring shaft, so that the stirring blade can shear and pulverize the frozen food layer by layer at a controllable speed. With the above structural arrangement, the stirring shaft and the gearbox are assembled together, and the stirring shaft and the gearbox can move up and down synchronously during operation.

[0009] According to the above scheme, the drive mechanism also includes a bearing. The first end of the stirring shaft passes through the inner ring of the bearing and is connected to the output end of the gear set for transmission. The inner ring of the bearing is fixed to the stirring shaft, and the outer ring of the bearing is fixed to the gearbox. Through the above structural arrangement, the inner ring of the bearing is fixedly connected to the stirring shaft, which can effectively counteract the upward reaction force generated by the stirring blade when cutting ice, and prevent this force from being transmitted to the gear set in the gearbox, thereby protecting the gear set from mechanical damage.

[0010] According to the above scheme, the output end of the motor is fixedly provided with an upper connector, and the input end of the gear set is fixedly provided with a lower connector. The upper connector and the lower connector are meshed and connected for transmission. In this way, the standardized meshing interface between the upper connector and the lower connector enables quick assembly and disassembly of the motor and the gear set, which facilitates equipment maintenance and functional expansion.

[0011] According to the above scheme, the guiding mechanism includes a guide sleeve and a protective cover. The guide sleeve has openings at both the top and bottom. The second end of the gearbox is slidably confined within the guide sleeve. The first end of the gearbox extends out of the upper opening of the guide sleeve and is detachably and fixedly connected to the main housing. The protective cover is fixedly connected to the lower opening of the guide sleeve. The first end of the stirring shaft passes through the protective cover and is drivenly connected to the output end of the gear set. The second end of the stirring shaft is fixedly connected to the stirring blade, which is located within the protective cover. The elastic reset mechanism is located within the guide sleeve. The upper end of the elastic reset mechanism is connected to the second end of the gearbox, and the lower end is connected to the upper end of the protective cover. More specifically, the protective cover has a dual function: firstly, it effectively prevents material splashing and personnel contact risks by physically isolating the stirring blade; secondly, it provides a stable mounting support structure for the elastic reset mechanism. With the above structural arrangement, the gearbox can achieve stable up-and-down reciprocating motion within the guide sleeve. In this preferred embodiment, the protective cover is detachably and fixedly connected to the lower opening of the guide sleeve. This facilitates the insertion of the gearbox into the guide sleeve from the lower opening and also provides convenience for the installation of the elastic reset mechanism inside the guide sleeve.

[0012] According to the above scheme, the elastic reset mechanism includes a reset spring, which is sleeved around the stirring shaft. The upper end of the reset spring abuts against the gearbox, and the lower end of the reset spring abuts against the upper end of the protective cover. With this structural arrangement, the reset spring and the stirring shaft are coaxially arranged, requiring no additional installation space, making it suitable for handheld stirring devices.

[0013] According to the above scheme, the upper end of the protective cover is provided with a guide hole, and the first end of the stirring shaft passes through the guide hole and is fixedly connected to the stirring blade. Through the above structural setting, the guide hole can provide axial guidance for the up-and-down movement of the stirring shaft, and can also provide radial constraint for the circumferential rotation of the stirring shaft, thereby effectively improving the uniformity and stability of the stirring process.

[0014] According to the above solution, a sealing ring is provided between the protective cover and the stirring rod, and the sealing ring is matched with the guide hole. Through this structural design, the sealing ring can effectively prevent food from entering the guide sleeve along the stirring shaft, thereby avoiding the risk of contamination caused by food residue.

[0015] According to the above scheme, an anti-rotation structure, such as a protrusion-slot fit or an elastic holding device, is provided between the material cup and the protective cover. This structure, through mechanical limiting, forcibly constrains the circumferential displacement of the material cup when the stirring blade rotates, thereby avoiding the phenomenon of the material cup rotating due to torque transmission.

[0016] According to the above scheme, the anti-rotation structure includes several anti-rotation ribs on the outer wall of the material cup and several anti-rotation ribs on the inner wall of the protective cover. The anti-rotation ribs are vertically designed, and the protective cover is fitted onto the outside of the material cup. The anti-rotation ribs of the protective cover are located between the anti-rotation ribs of the material cup. With the above structural arrangement, the protective cover can be directly fitted onto the outside of the material cup from top to bottom, and the anti-rotation ribs between the protective cover and the material cup interlock to form a rigid constraint.

[0017] This utility model also includes a high-speed mixing rod accessory, a meat grinder cup accessory, and an egg white stick accessory. The main unit housing is detachably and fixedly connected to the high-speed mixing rod accessory, meat grinder cup accessory, and egg white stick accessory. It should be emphasized that this utility model can also prepare other mixing accessories to fit the main unit housing as needed. The output end of the motor is drively connected to the input end of the high-speed mixing rod accessory, meat grinder cup accessory, and egg white stick accessory. Through the above structural design, the main unit housing with a built-in motor and control board can be detachably connected to the high-speed mixing rod accessory, meat grinder cup accessory, and egg white stick accessory through a standardized interface. By replacing the accessories, a single machine can be used for multiple purposes, covering diverse needs such as mixing, grinding meat, and whipping.

[0018] The beneficial effects of this utility model are: This invention enables the stirring blade to move up and down reciprocally within the material cup, thereby achieving layer-by-layer stirring and pulverizing of frozen ingredients, ultimately resulting in a soft and fluffy ice cream product. Furthermore, the guiding mechanism and the elastic reset mechanism can achieve efficient cooperation with the drive mechanism, which is simpler than the traditional method of cooperating with the drive mechanism via a lead screw, nut sleeve, and screw. Attached Figure Description

[0019] Figure 1 This is an exploded structural diagram of Example 1; Figure 2 This is a cross-sectional view of Example 1. Figure 1 ; Figure 3 This is a cross-sectional view of Example 1. Figure 2 ; Figure 4 This is a partial structural cross-sectional view of Embodiment 1; Figure 5 This is a schematic diagram of the high-speed stirring rod accessory structure in Example 1; Figure 6 This is a schematic diagram of the meat grinder cup accessory structure in Example 1; Figure 7This is a schematic diagram of the egg white stick accessory structure in Example 1; Figure 8 This is a partial structural cross-sectional view of Embodiment 2.

[0020] In the diagram: 1. Drive mechanism; 2. Stirring shaft; 3. Stirring blade; 4. Material cup; 5. Guide mechanism; 6. Elastic reset mechanism; 7. Anti-rotation rib; 8. High-speed stirring rod accessory; 9. Meat grinder cup accessory; 10. Egg white stick accessory; 11. Main unit housing; 12. Gearbox; 13. Motor; 14. Gear set; 15. Upper connector; 16. Lower connector; 17. Bearing; 51. Guide sleeve; 52. Protective cover; 53. Guide hole; 54. Sealing ring. Detailed Implementation

[0021] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments. Example

[0022] like Figure 1-4 As shown, this utility model provides a handheld ice cream machine, including a drive mechanism 1, a stirring shaft 2, a stirring blade 3, a container 4, a guide mechanism 5, and an elastic reset mechanism 6. The first end of the stirring shaft 2 is connected to the output end of the drive mechanism 1, and the second end of the stirring shaft 2 is fixedly connected to the stirring blade 3. The stirring blade 3 is placed inside the container 4. The drive mechanism 1 can slide up and down along the guide mechanism 5. More specifically, the guide mechanism 5 is mounted on the container 4. When the drive mechanism 1 slides up and down along the guide mechanism 5, the stirring shaft 2 and the stirring blade 3 also move up and down with the drive mechanism 1. The upper end of the elastic reset mechanism 6 is connected to the drive mechanism 1, and the lower end of the elastic reset mechanism 6 is connected to the guide mechanism 5. In the initial state, the elastic reset mechanism 6 is in a freely extended state, the drive mechanism 1 is supported by the elastic reset mechanism 6 and held in a specific position, and the stirring blade 3 is located at the top position inside the container 4. In use, the user repeatedly performs the following operations: a) Apply downward pressure to the drive mechanism 1, causing it to move axially downward along the guide mechanism 5, driving the stirring shaft 2 and the stirring blade 3 downward simultaneously, while compressing the elastic reset mechanism 6; b) When the elastic reset mechanism 6 reaches its maximum compression, release the pressure and pull the drive mechanism 1 upward. Under the combined action of the restoring force of the elastic reset mechanism 6 and the user's pulling force, the drive mechanism 1 moves upward along the guide mechanism 5, resetting to its initial position. Through this structural design, the stirring blade 3 can reciprocate up and down within the material cup 4, thereby achieving layer-by-layer stirring and pulverizing of frozen ingredients, ultimately obtaining a soft and fluffy ice cream product. Furthermore, the guide mechanism 5 and the elastic reset mechanism 6 can achieve efficient cooperation with the drive mechanism 1, which is simpler than the traditional screw, nut sleeve, and drive mechanism cooperation method.

[0023] Furthermore, the drive mechanism 1 includes a main housing 11 and a gearbox 12. The main housing 11 adopts an ergonomic grip design, and its outer contour is optimized to fit the palm grip curve, allowing the user to hold the main housing 11 firmly, thereby driving the entire drive mechanism 1 to achieve reciprocating motion in the vertical direction. The first end of the gearbox 12 is detachably and fixedly connected to the main housing 11. In this preferred embodiment, the gearbox 12 is fastened to the main housing 11. The second end of the gearbox 12 is slidably disposed in the guide mechanism 5 along the guide mechanism 5. The upper end of the elastic reset mechanism 6 abuts against the second end of the gearbox 12, and the lower end of the elastic reset mechanism 6 abuts against the guide mechanism 5. A motor 13 is provided inside the main housing 11, and the motor 13 drives the stirring shaft 2 to rotate through the gearbox 12. Through the above structural design, the main housing 11 (with built-in motor 13 and control board) can be modularly separated from the gearbox 12, guide mechanism 5 and elastic reset mechanism 6, which facilitates the separate assembly and debugging during the manufacturing process. Furthermore, through the standardized interface design, the main housing 11 can be adapted to various stirring accessories, thereby expanding the functional applicability of the equipment.

[0024] Furthermore, the main housing also includes a control board electrically connected to the motor 13. The gearbox 12 contains a gear set 14, the output end of which is detachably and fixedly connected to the first end of the stirring shaft 2. The gear set 14 forms a reduction mechanism through multiple gear pairs, converting the high-speed rotation output from the motor 13 into low-speed rotation of the stirring shaft 2, allowing the stirring blade 3 to shear and pulverize frozen food layer by layer at a controllable speed. With this structural arrangement, the stirring shaft 2 and the gearbox 12 are assembled together, enabling synchronous up-and-down movement of the stirring shaft 2 and gearbox 14 during operation.

[0025] Furthermore, the output end of the motor 13 is fixedly provided with an upper connector 15, and the input end of the gear set 14 is fixedly provided with a lower connector 16. The upper connector 15 and the lower connector 16 are meshed and connected for transmission. In this way, the standardized meshing interface between the upper connector 15 and the lower connector 16 enables the motor 13 and the gear set 14 to be quickly disassembled and assembled, which facilitates equipment maintenance and functional expansion.

[0026] Furthermore, the guiding mechanism 5 includes a guide sleeve 51 and a protective cover 52. The guide sleeve 51 has openings at both its upper and lower ends. The second end of the gearbox 12 is slidably confined within the guide sleeve 51. The first end of the gearbox 12 extends out of the upper opening of the guide sleeve 51 and is detachably and fixedly connected to the main housing 11. The protective cover 52 is fixedly connected to the lower opening of the guide sleeve 51. The first end of the stirring shaft 2 passes through the protective cover 52 and is detachably and fixedly connected to the output end of the gear set 14. The second end of the stirring shaft 2 is fixedly connected to the stirring blade 3. The stirring blade 3 is located within the protective cover 52. The elastic reset mechanism 6 is located within the guide sleeve 51. The upper end of the elastic reset mechanism 6 is connected to the second end of the gearbox 12, and the lower end of the elastic reset mechanism 6 is connected to the upper end of the protective cover 52. More specifically, the protective cover 52 has a dual function: firstly, by physically isolating the stirring blade 3, it effectively prevents material splashing and personnel contact risks; secondly, it provides a stable installation support structure for the elastic reset mechanism 6. With the above-described structure, the gearbox 12 can achieve stable up-and-down reciprocating motion within the guide sleeve 51. Preferably, in this embodiment, the protective cover 52 is detachably and fixedly connected to the lower opening of the guide sleeve 51. This facilitates the insertion of the gearbox 12 into the guide sleeve 51 through the lower opening and also provides convenience for the installation of the elastic reset mechanism 6 within the guide sleeve 51.

[0027] Furthermore, the elastic reset mechanism 6 includes a reset spring, which is sleeved around the stirring shaft 2. The upper end of the reset spring abuts against the gearbox 12, and the lower end of the reset spring abuts against the upper end of the protective cover 52. With this structural arrangement, the reset spring and the stirring shaft 2 are coaxially arranged, requiring no additional installation space, making it suitable for handheld stirring devices. Preferably, in this embodiment, a spring limiting ring is fixedly provided at the bottom of the gearbox, and the upper end of the reset spring is placed inside the spring limiting ring.

[0028] Furthermore, the upper end of the protective cover 52 is provided with a guide hole 53, through which the first end of the stirring shaft 2 passes and is fixedly connected to the stirring blade 3. Through this structural arrangement, the guide hole 53 can provide axial guidance for the vertical movement of the stirring shaft 2, and also provide radial constraint for the circumferential rotation of the stirring shaft 2, thereby effectively improving the uniformity and stability of the stirring process.

[0029] Furthermore, a sealing ring 54 is provided between the protective cover 52 and the stirring rod, and the sealing ring 54 is matched with the guide hole 53. Through the above structural arrangement, the sealing ring 54 can effectively prevent food from entering the interior of the guide sleeve 51 along the stirring shaft 2, thereby avoiding the risk of contamination caused by food residue.

[0030] Furthermore, an anti-rotation structure, such as a protrusion-slot fit or an elastic clamping device, is provided between the material cup 4 and the protective cover 52. This structure mechanically limits the circumferential displacement of the material cup 4 when the stirring blade 3 rotates, thereby preventing the material cup 4 from rotating due to torque transmission.

[0031] Furthermore, the anti-rotation structure includes several anti-rotation ribs 7 on the outer wall of the material cup 4 and several anti-rotation ribs 7 on the inner wall of the protective cover 52. The anti-rotation ribs 7 are vertically designed. The protective cover 52 is fitted onto the outside of the material cup 4, and the anti-rotation ribs 7 of the protective cover 52 are located between the anti-rotation ribs 7 of the material cup 4. With the above structural arrangement, the protective cover 52 can be directly fitted onto the outside of the material cup 4 from top to bottom, and the anti-rotation ribs 7 between the protective cover 52 and the material cup 4 interlock to form a rigid constraint.

[0032] like Figure 5-7 As shown, this utility model also includes a high-speed stirring rod accessory 8, a meat grinder cup accessory 9, and an egg white stick accessory 10. The main housing 11 is detachably and fixedly connected to the high-speed stirring rod accessory 8, the meat grinder cup accessory 9, and the egg white stick accessory 10. It should be emphasized that this utility model can also prepare other stirring accessories to be adapted to the main housing 11 as needed. The output end of the motor 13 is drivenly connected to the input end of the high-speed stirring rod accessory 8, the meat grinder cup accessory 9, and the egg white stick accessory 10. Through the above structural settings, the main housing 11, which has a built-in motor 13 and control board, can be detachably connected to the high-speed stirring rod accessory 8, the meat grinder cup accessory 9, and the egg white stick accessory 10 through a standardized interface. By replacing the accessories, it can achieve multiple uses in one machine, covering diverse needs such as stirring, grinding meat, and whipping.

[0033] The process of using this utility model for making fresh fruit ice cream is as follows: 1) Add the diced fruit and liquid cream to the measuring cup according to the preset ratio; 2) Assemble one end of the high-speed stirring rod accessory 8 onto the main housing 11, connect the upper connector 15 of the motor 13 to the conveying end of the high-speed stirring rod accessory 8, place the other end of the high-speed stirring rod accessory 8 into the measuring cup, and start the motor 13 to make a freshly squeezed juice smoothie. 3) Pour the juice smoothie into cup 4 and place cup 4 in the refrigerator to freeze the juice smoothie into a hard ice cube; 4) Disassemble the high-speed stirring rod accessory 8, assemble the gearbox 12, which is equipped with the stirring shaft 2, guide sleeve 51 and other structures, onto the main housing 11, connect the upper connector 15 of the motor 13 with the lower connector 16 of the gear set 14, and put the protective cover 52 on the outside of the material cup 4. Start the motor 13 and repeat the following operations: a) Apply downward pressure to the main housing 11, the gearbox 12 moves downward along the guide sleeve 51, driving the stirring shaft 2 and stirring blade 3 to move downward synchronously, while compressing the return spring; b) When the return spring reaches the maximum compression, release the pressure and pull the main housing 11 upward. Under the combined action of the restoring force of the return spring and the user's pulling force, the gearbox 12 moves in the opposite direction along the guide sleeve 51 and returns to the initial position, thereby realizing the layer-by-layer stirring and crushing of frozen ingredients, and finally obtaining a soft and fluffy ice cream product. Example

[0034] like Figure 8 As shown, this utility model provides a handheld ice cream machine, which has a basically the same structure as Embodiment 1, with the following differences: The drive mechanism 1 also includes a bearing 17. The first end of the stirring shaft 2 passes through the inner ring of the bearing 17 and is connected to the output end of the gear set 14. The inner ring of the bearing 17 is fixed to the stirring shaft 2, and the outer ring of the bearing 17 is fixed to the gearbox 12. By adding the bearing, the upward reaction force generated by the stirring blade when cutting ice can be effectively counteracted, preventing this force from being transmitted to the gear set in the gearbox, thereby protecting the gear set from mechanical damage.

[0035] The upper end of the return spring is sleeved on the outside of the spring limiting ring. With this structural arrangement, the return spring is closer to the guide sleeve 51, effectively reducing lateral bending of the return spring and making its operation more stable.

[0036] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A handheld ice cream machine, comprising a drive mechanism (1), a stirring shaft (2), a stirring blade (3), and a container (4), wherein a first end of the stirring shaft (2) is connected to the output end of the drive mechanism (1), a second end of the stirring shaft (2) is fixedly connected to the stirring blade (3), and the stirring blade (3) is placed inside the container (4), characterized in that, It also includes a guide mechanism (5) and an elastic reset mechanism (6). The drive mechanism (1) can slide up and down along the guide mechanism (5), and the stirring shaft moves up and down synchronously with the drive mechanism. The upper end of the elastic reset mechanism (6) is connected to the drive mechanism (1), and the lower end of the elastic reset mechanism (6) is connected to the guide mechanism (5).

2. The handheld ice cream machine according to claim 1, characterized in that, The drive mechanism (1) includes a main housing (11) and a gearbox (12). The first end of the gearbox (12) is detachably and fixedly connected to the main housing (11). The second end of the gearbox (12) is slidably disposed in the guide mechanism (5) along the guide mechanism (5). The upper end of the elastic reset mechanism (6) is connected to the second end of the gearbox (12), and the lower end of the elastic reset mechanism (6) is connected to the guide mechanism (5). The main housing (11) is equipped with a motor (13), which drives the stirring shaft (2) to rotate through a gearbox (12).

3. The handheld ice cream machine according to claim 2, characterized in that, The main housing (11) is also provided with a control board, which is electrically connected to the motor (13). The gearbox (12) is provided with a gear set (14), and the output end of the gear set (14) is connected to the first end of the stirring shaft (2) for transmission.

4. The handheld ice cream machine according to claim 3, characterized in that, The drive mechanism (1) also includes a bearing (17). The first end of the stirring shaft (2) passes through the inner ring of the bearing (17) and is connected to the output end of the gear set (14). The inner ring of the bearing (17) is fixed to the stirring shaft (2), and the outer ring of the bearing (17) is fixed to the gearbox (12).

5. The handheld ice cream machine according to claim 3, characterized in that, The guiding mechanism (5) includes a guide sleeve (51) and a protective cover (52). The guide sleeve (51) has openings at both the top and bottom. The second end of the gearbox (12) is slidably disposed inside the guide sleeve (51). The first end of the gearbox (12) extends out of the upper opening of the guide sleeve (51) and is detachably and fixedly connected to the main housing (11). The protective cover (52) is fixedly connected to the lower opening of the guide sleeve (51). The first end of the stirring shaft (2) passes through the protective cover (52) and is connected to the output end of the gear set (14). The second end of the stirring shaft (2) is fixedly connected to the stirring blade (3). The stirring blade (3) is disposed inside the protective cover (52). The elastic reset mechanism (6) is disposed inside the guide sleeve (51). The upper end of the elastic reset mechanism (6) is connected to the second end of the gearbox (12), and the lower end of the elastic reset mechanism (6) is connected to the upper end of the protective cover (52).

6. The handheld ice cream machine according to claim 5, characterized in that, The elastic reset mechanism (6) includes a reset spring, which is sleeved around the stirring shaft (2). The upper end of the reset spring abuts against the gearbox (12), and the lower end of the reset spring abuts against the upper end of the protective cover (52).

7. The handheld ice cream machine according to claim 5, characterized in that, The upper end of the protective cover (52) is provided with a guide hole (53), and the first end of the stirring shaft (2) passes through the guide hole (53) and is fixedly connected to the stirring blade (3).

8. The handheld ice cream machine according to claim 5, characterized in that, An anti-rotation structure is provided between the material cup (4) and the protective cover (52).

9. The handheld ice cream machine according to claim 8, characterized in that, The anti-rotation structure includes several anti-rotation ribs (7) on the outer wall of the material cup (4) and several anti-rotation ribs (7) on the inner wall of the protective cover (52). The anti-rotation ribs (7) are designed vertically. The protective cover (52) is fitted onto the outside of the material cup (4). The anti-rotation ribs (7) of the protective cover (52) are located between the anti-rotation ribs (7) of the material cup (4).

10. The handheld ice cream machine according to claim 2, characterized in that, It also includes one or more of a high-speed stirring rod accessory (8), a meat grinder cup accessory (9), and an egg white stick accessory (10). The main housing (11) is detachably and fixedly connected to the high-speed stirring rod accessory (8), the meat grinder cup accessory (9), and the egg white stick accessory (10). The output end of the motor (13) is drivenly connected to the input end of the high-speed stirring rod accessory (8), the meat grinder cup accessory (9), and the egg white stick accessory (10).

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