A heat-dissipating waterproof head structure and a complementary food machine

Abstract

The utility model discloses a kind of head structure of heat dissipation waterproof and complementary food machine, including, base, base is provided with exhaust cover, exhaust plate and installation cavity, exhaust plate is capped in the top of installation cavity;Exhaust plate is provided with the exhaust boss projecting upwards, the top of exhaust boss is provided with exhaust hole;Exhaust cover is provided with first blocking ring, exhaust cover is capped above exhaust plate;First blocking ring inside is surrounded and formed into exhaust cavity, exhaust cavity is correspondingly arranged with exhaust hole;The bottom of first blocking ring and the periphery of exhaust piece are spaced and formed into first exhaust interval;The bottom of installation cavity is provided with through channel;Driving assembly, driving assembly is provided with driving shaft;Radiating fan.A kind of complementary food machine, including the head structure of heat dissipation waterproof.The utility model forms up-down exhaust structure by the exhaust boss of exhaust plate and the first blocking ring of exhaust cover, can realize exhaust heat dissipation, and water flow can be reduced to the inside of base when washing.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a heat-dissipating and waterproof head structure and a baby food maker. Background Technology

[0002] Juicers, baby food processors, and blenders are household appliances that can quickly process ingredients and make nutritious drinks and baby food. They generally work by putting ingredients into a processing cup, then connecting the head and blending blades to the processing cup to cut the ingredients.

[0003] Typically, the drive structure, heat dissipation structure, and control circuit board are integrated inside the machine head. During actual use, the processing of food often involves splashing and leaking of viscous or liquid substances such as juice, pulp, and fruit residue. This makes it easy for contaminants to accumulate at the exhaust port and the protruding end of the motor shaft. Therefore, it is necessary to clean the exhaust port and the protruding end of the motor shaft after each use. However, these areas are prone to water ingress during cleaning. If the user operates improperly during cleaning, water can easily enter the machine head and come into contact with the motor windings or control circuitry, potentially causing short circuits, electrical leaks, and other safety accidents, as well as motor damage and circuit malfunctions. Utility Model Content

[0004] In order to overcome at least one of the defects mentioned above in the prior art, the present invention provides a heat dissipation and waterproof machine head structure and a baby food maker, which forms an upper and lower exhaust structure by means of the exhaust protrusion of the exhaust plate and the first blocking ring of the exhaust cover, which can not only achieve exhaust heat dissipation, but also reduce water flow into the machine base during cleaning.

[0005] The technical solution adopted by this utility model to solve its problem is: A heat-dissipating and waterproof head unit structure, comprising, The machine base includes an exhaust cover, an exhaust plate, and a mounting cavity. The exhaust plate covers the top of the mounting cavity and is connected to the machine base. The exhaust plate has an upwardly protruding exhaust boss, and the top of the exhaust boss has an exhaust hole. The exhaust cover has a first blocking ring, which covers the top of the exhaust plate so that the first blocking ring surrounds the outer periphery of the exhaust boss. The inner side of the first blocking ring forms an exhaust cavity, which is correspondingly arranged with the exhaust hole. The bottom end of the first blocking ring and the periphery of the exhaust plate form a first exhaust interval. The bottom end of the mounting cavity has a through-hole. A drive assembly is installed in the mounting cavity. The drive assembly is provided with a drive shaft, which is correspondingly arranged with the through-channel and rotates in cooperation with the through-channel. A cooling fan is installed in the mounting cavity and rotates under the drive of the drive assembly.

[0006] As an optional implementation, the exhaust plate is provided with a second blocking ring, which surrounds the outer periphery of the exhaust protrusion; the inner peripheral wall of the first blocking ring is spaced apart from the outer peripheral wall of the exhaust protrusion; the bottom end of the first blocking ring is located between the exhaust protrusion and the second blocking ring; the top end of the second blocking ring is spaced apart from the periphery of the exhaust cover to form a second exhaust gap.

[0007] As an optional implementation, a third blocking ring is provided around the circumference of the exhaust cover, and a fourth blocking ring is provided around the circumference of the exhaust plate. The third blocking ring and the fourth blocking ring are provided correspondingly and are spaced apart to form a third exhaust interval.

[0008] As an optional implementation, the exhaust cover is provided with a plurality of positioning ribs, which are spaced apart in the circumferential direction of the exhaust cover; the plurality of positioning ribs abut against the outer peripheral wall of the second blocking ring.

[0009] As an optional implementation, the top of the exhaust boss is provided with multiple exhaust holes.

[0010] As an optional implementation, the bottom end of the exhaust cover is provided with a positioning post; the top end of the exhaust boss is provided with a positioning groove, and the positioning post is inserted into the positioning groove.

[0011] As an optional implementation, the bottom end of the base is provided with a positioning boss and a positioning sleeve, the positioning sleeve surrounding the outer periphery of the positioning boss; the positioning boss includes a first positioning section and a second positioning section that are axially connected to each other, the outer diameter of the first positioning section is larger than the outer diameter of the second positioning section; the mounting cavity extends into the interior of the positioning boss; the through channel is provided on the bottom end face of the second positioning section.

[0012] As an optional implementation, the drive assembly includes a drive motor and a gear transmission mechanism, wherein the shaft of the drive motor is connected to the drive shaft via the gear transmission mechanism.

[0013] As an optional implementation, the drive motor is a dual-axis motor, one of the shafts of the dual-axis motor is connected to the drive shaft via the gear transmission mechanism, and the other shaft of the dual-axis motor is connected to the cooling fan.

[0014] A baby food processor, including the aforementioned heat-dissipating and waterproof head structure.

[0015] In summary, this utility model has the following technical effects: 1. During the rotation of the cooling fan, the working heat generated by the drive component can be guided to flow in the mounting cavity and to the exhaust hole of the exhaust plate. The heat is then discharged to the exhaust chamber through the exhaust hole and then discharged through the first exhaust gap around the first blocking ring and the exhaust plate, thereby achieving heat dissipation of the drive component inside the base.

[0016] 2. During cleaning, the vent cover and vent plate have a first venting gap around their perimeter, making it easy for cleaning water to enter the interior at this location. Since the vent hole that communicates with the internal mounting cavity of the machine base is located at the top of the venting protrusion, if cleaning water enters the venting cavity through the first venting gap, the water flow also needs to flow upward to the top of the venting protrusion before entering the mounting cavity. According to the principle that water flows downhill, the water flow entering the first venting gap will also stay at the first venting gap position and will not easily flow upward to the vent hole. Therefore, the waterproof performance of the machine head can be improved during the cleaning process. Attached Figure Description

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

[0018] Figure 1 This is a cross-sectional view of the head structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the machine head of this utility model; Figure 3 This is a partially exploded structural diagram of the head structure of this utility model; Figure 4 This is a partially exploded structural diagram of the head structure of this utility model; Figure 5 This is a schematic diagram of the structure of the base of this utility model; Figure 6 This is a schematic diagram of the base structure of this utility model from another perspective; Figure 7 This is a schematic diagram of the exhaust cover of this utility model.

[0019] The meanings of the reference numerals in the attached drawings are as follows: 10, base; 11, exhaust plate; 111, exhaust boss; 112, exhaust hole; 113, second blocking ring; 114, fourth blocking ring; 115, positioning groove; 12, exhaust cover; 121, first blocking ring; 122, exhaust chamber; 123, positioning rib; 1231, positioning segment; 1232, abutting segment; 124, third blocking ring; 125, positioning post; 13, mounting cavity; 131, through channel; 14, positioning boss; 141, first positioning section; 142, second positioning section; 15, positioning sleeve; 21, drive shaft; 22, drive motor; 23, gear transmission mechanism; 30, cooling fan. Detailed Implementation

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

[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 this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having 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 some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to 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 utility model 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 this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0026] See Figures 1-7 This utility model discloses a heat dissipation and waterproof head structure, including a base 10, a drive assembly and a cooling fan 30. The base 10 is provided with an exhaust cover 12, an exhaust plate 11 and a mounting cavity 13. The exhaust plate 11 covers the top of the mounting cavity 13 and is connected to the base 10.

[0027] Specifically, an upwardly protruding exhaust boss 111 is provided on the exhaust plate 11, and an exhaust hole 112 is provided at the top of the exhaust boss 111. The exhaust cover 12 is provided with a first blocking ring 121, which covers the exhaust plate 11 and is connected to the exhaust plate 11 so that the first blocking ring 121 surrounds the outer periphery of the exhaust boss 111. The inner side of the first blocking ring 121 forms an exhaust cavity 122, which is correspondingly arranged with the exhaust hole 112; the bottom end of the first blocking ring 121 and the periphery of the exhaust plate form a first exhaust interval; the bottom end of the mounting cavity 13 is provided with a through channel 131. The drive assembly and the cooling fan 30 are both installed in the mounting cavity 13. The drive assembly is provided with a drive shaft 21, which is correspondingly arranged with the through channel 131 and rotates in cooperation with the through channel 131. The drive assembly can drive the drive shaft 21 and the cooling fan 30 to rotate.

[0028] Based on the above structure, when using the heat dissipation and waterproof head structure of this utility model, the head structure can be used in juicers, baby food makers, blenders, etc. During assembly, the stirring shaft of the stirring structure is connected and fixed to the drive shaft 21 provided in the corresponding through channel 131. Activating the drive assembly can drive the drive shaft 21 to rotate, thereby driving the stirring structure to perform stirring or crushing actions.

[0029] During use, the cooling fan 30 rotates simultaneously within the mounting cavity 13 when the drive component is working. This rotation of the cooling fan 30 guides the working heat generated by the drive component to flow within the mounting cavity 13 and to the exhaust port 112 of the exhaust plate 11. The heat is then discharged through the exhaust port 112 to the exhaust chamber 122 and then discharged through the first obstruction ring 121 and the first exhaust interval around the exhaust plate, thus achieving heat dissipation for the drive component inside the base 10.

[0030] When the machine head structure is cleaned after use, the vent cover 12 and the vent plate have a first venting gap around their periphery, making it easy for cleaning water to enter the interior at this position. Since the vent hole 112, which is connected to the mounting cavity 13 inside the base 10, is located at the top of the venting boss 111, if the cleaning water enters the venting cavity 122 through the first venting gap, the water flow also needs to flow upward to the top of the venting boss 111 before entering the mounting cavity 13. According to the principle that water flows downhill, the water flow entering the first venting gap will also stay at the first venting gap position and will not easily flow upward to the vent hole 112. Therefore, the waterproof performance of the machine head can be improved during the cleaning process.

[0031] As an optional implementation, a second blocking ring 113 may be provided on the exhaust plate 11, and the second blocking ring 113 surrounds the outer periphery of the exhaust boss 111. After the exhaust cover 12 is sealed above the exhaust plate 11, the first blocking ring 121 can extend into the space between the exhaust boss 111 and the second blocking ring 113, and the inner peripheral wall of the first blocking ring 121 is spaced apart from the outer peripheral wall of the exhaust boss 111. The bottom end of the first blocking ring 121 is located between the exhaust boss 111 and the second blocking ring 113. The top end of the second blocking ring 113 and the periphery of the exhaust cover 12 form a second exhaust gap.

[0032] Thus, during exhaust, the cooling fan 30 rotates, guiding the heat inside the mounting cavity 13 to flow through the exhaust boss 111 to the exhaust hole 112, through the exhaust hole 112 to the exhaust chamber 122, then downwards to the first exhaust interval, and into the space between the first blocking ring 121 and the second blocking ring 113, and then out through the second exhaust interval between the second blocking ring 113 and the exhaust cover 12.

[0033] Based on this structure, the second exhaust interval is located outside the first exhaust interval. During cleaning, the cleaning water enters through the outer second exhaust interval. The second exhaust interval is formed between the top of the second blocking ring 113 and the exhaust cover 12. According to the principle that water flows downhill, the cleaning water is not easy to enter through the second exhaust interval under the action of the second blocking ring 113. Even if the cleaning water enters through the second exhaust interval, the first blocking ring 121 and the exhaust protrusion 111 are set inside the second exhaust interval to block it twice, so the waterproof effect is better.

[0034] More specifically, a third blocking ring 124 can be provided around the exhaust cover 12, and a fourth blocking ring 114 can be provided around the exhaust plate 11. The third blocking ring 124 and the fourth blocking ring 114 are provided correspondingly and are spaced apart to form a third exhaust interval. In this way, when exhausting, the exhaust path flows from the inside to the outside through the exhaust hole 112 to the exhaust chamber 122, then through the first exhaust interval to the second exhaust interval, and then through the third exhaust interval to be discharged, thereby achieving heat dissipation.

[0035] During waterproofing, the water flow path is from the outside to the inside through the third exhaust interval, the second exhaust interval, the first exhaust interval, the exhaust chamber 122, and the exhaust hole 112. In other words, based on this structure, if external water is to flow into the base 10, it must pass through the gap between the third blocking ring 124 and the fourth blocking ring 114, and then be blocked by the second blocking ring 113, the first blocking ring 121, and the exhaust protrusion 111. Therefore, less water can enter the interior, resulting in a better waterproofing effect.

[0036] As an optional implementation, a plurality of positioning ribs 123 can be provided on the exhaust cover 12. The plurality of positioning ribs 123 are spaced apart in the circumferential direction of the exhaust cover 12. When assembling the exhaust cover 12 and the exhaust plate 11, the exhaust cover 12 can cover the top of the exhaust plate 11, and the plurality of positioning ribs 123 can abut against the outer peripheral wall of the second blocking ring 113. In this way, after the exhaust cover 12 and the exhaust plate 11 are assembled, the plurality of positioning ribs 123 provide positioning and abutment on the outside, and the assembly structure of the exhaust cover 12 is more stable.

[0037] Furthermore, the multiple positioning ribs 123 are spaced apart, so airflow is allowed between two adjacent positioning ribs 123, thus the multiple positioning ribs 123 do not affect the internal exhaust and heat dissipation.

[0038] More specifically, the aforementioned positioning rib 123 includes a positioning segment 1231 and two abutting segments 1232. The positioning segment 1231 is connected to the exhaust cover, and the two abutting segments are spaced apart on both sides of the positioning segment 1232. Thus, after the exhaust cover 12 and the exhaust plate 11 are assembled, the two abutting segments 1232 of the multiple positioning ribs 123 provide positioning and abutment on the outside, specifically abutting to the inside of the fourth blocking ring 114. Since there is a gap between the two abutting segments 1232, even if the positioning rib 123 is abutted against the periphery of the exhaust plate, the gap between the two abutting segments 1232 of the positioning rib 123 can be used for exhaust, reducing the impact of the positioning rib on the exhaust.

[0039] As an optional implementation, the top of the exhaust boss 111 is provided with a plurality of exhaust holes 112. The plurality of exhaust holes 112 can disperse and discharge the internal heat, resulting in high exhaust efficiency and uniform exhaust.

[0040] As an optional implementation, a positioning post 125 can be provided at the bottom of the exhaust cover 12, and a positioning groove 115 can be provided at the top of the exhaust boss 111. When assembling the exhaust cover 12, the exhaust cover 12 can be inserted into the positioning groove 115 through the positioning post 125. After the positioning post 125 is inserted into the positioning groove 115, the exhaust cover 12 and the exhaust plate 11 can be kept apart for exhaust heat dissipation.

[0041] As an optional implementation, the bottom end of the base 10 is provided with a positioning boss 14 and a positioning sleeve 15, with the positioning sleeve 15 surrounding the outer periphery of the positioning boss 14. Specifically, the positioning boss 14 includes a first positioning section 141 and a second positioning section 142 that are axially connected to each other, and the outer diameter of the first positioning section 141 is larger than the outer diameter of the second positioning section 142. The positioning cavity 13 extends into the interior of the positioning boss, and the through channel 131 is provided on the bottom end face of the second positioning section 142.

[0042] The end of the drive shaft 21 that is connected to the external cutter shaft can be located in the through channel 131 of the second positioning section 142. The assembly position for connecting to the external structure is set in the second positioning section 142 with a smaller outer diameter. In this way, the positioning sleeve 15 can act as a water barrier on the positioning boss 14. If water enters the inside of the positioning sleeve during cleaning or use, the water or steam will first stay in the larger outer diameter of the upper first positioning section 141, thus reducing the amount of water entering through the connection position of the smaller outer diameter second positioning section 142 and improving the waterproof performance.

[0043] As an optional implementation, the drive assembly includes a drive motor 22 and a gear transmission mechanism 23. The shaft of the drive motor 22 is connected to the drive shaft 21 via the gear transmission mechanism 23. Specifically, the shaft of the drive motor 22 is connected to the input gear of the gear transmission mechanism 23, and the drive shaft 21 is connected to the output gear of the gear transmission mechanism 23 via a connecting shaft. Thus, when the drive shaft 21 rotates, the drive motor 22 drives the gear transmission mechanism 23 to perform transmission, and the gear transmission mechanism 25 drives the drive shaft 21 to rotate, so that the rotation of the drive shaft 21 is smooth.

[0044] As an optional implementation, the drive motor 22 is a dual-axis motor. One of the shafts of the dual-axis motor is connected to the drive shaft 21 via a gear transmission mechanism 23, and the other shaft of the dual-axis motor is connected to the cooling fan 30. The two shafts of the dual-axis motor drive the cooling fan 30 and the drive shaft 21 simultaneously, so that driving and cooling are synchronized, and the drive motor 22 can be cooled in time.

[0045] Of course, when the drive motor is a regular single-shaft motor, the cooling fan can be driven by a gear shaft or a gear-to-gear transmission mechanism, or by other transmission structures to drive the drive motor shaft.

[0046] Example 2, A baby food processor includes the heat-dissipating and waterproof head structure of Embodiment 1. When using the baby food processor of this embodiment, ingredients can be placed into the processing cup. During assembly, the stirring shaft of the stirring blade is connected and fixed to the drive shaft 21 provided with the corresponding through-channel. Activating the drive assembly can drive the drive shaft 21 to rotate, thereby driving the stirring structure to perform stirring or crushing actions to complete the preparation of baby food.

[0047] It should be noted that a spline groove can be provided on the drive shaft 21, and a corresponding spline shaft can be provided on the stirring shaft of the stirring blade. The spline shaft is inserted into the spline groove for connection, which makes disassembly and assembly convenient.

[0048] During use, the cooling fan 30 rotates simultaneously within the mounting cavity when the drive component is working. This rotation of the cooling fan 30 guides the working heat generated by the drive component to flow within the mounting cavity and to the exhaust port 112 of the exhaust plate 11. The heat is then discharged through the exhaust port 112 to the exhaust chamber 122 and then discharged through the first exhaust gap between the first blocking ring 121 and the circumference of the exhaust plate, thus achieving heat dissipation for the drive component inside the base 10.

[0049] When the machine head structure is cleaned after use, the vent cover 12 and the vent plate have a first venting gap around their periphery, making it easy for cleaning water to enter the interior at this position. Since the vent hole 112, which communicates with the internal mounting cavity of the machine base 10, is located at the top of the vent protrusion 111, if the cleaning water enters the vent chamber 122 through the first venting gap, the water flow also needs to flow upward to the top of the vent protrusion 111 before entering the mounting cavity. According to the principle that water flows downhill, the water flow entering the first venting gap will also stay at the first venting gap position and will not easily flow upward to the vent hole 112. Therefore, the waterproof performance of the machine head can be improved during the cleaning process.

[0050] Of course, the other structures of the machine head in this embodiment are the same as those in Embodiment 1. The other structures and working principles of the complementary food machine are the same as those in Embodiment 1. The other structures of the complementary food machine are the same as those of the complementary food machines in the prior art, and will not be described in detail here.

[0051] The technical means disclosed in this utility model 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 principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A heat-dissipating and waterproof head structure, characterized in that, include, The machine base includes an exhaust cover, an exhaust plate, and a mounting cavity. The exhaust plate covers the top of the mounting cavity and is connected to the machine base. The exhaust plate has an upwardly protruding exhaust boss, and the top of the exhaust boss has an exhaust hole. The exhaust cover has a first blocking ring, which covers the top of the exhaust plate so that the first blocking ring surrounds the outer periphery of the exhaust boss. The inner side of the first blocking ring forms an exhaust cavity, which is correspondingly arranged with the exhaust hole. The bottom end of the first blocking ring and the periphery of the exhaust plate form a first exhaust interval. The bottom end of the mounting cavity has a through-hole. A drive assembly is installed in the mounting cavity. The drive assembly is provided with a drive shaft, which is correspondingly arranged with the through-channel and rotates in cooperation with the through-channel. A cooling fan is installed in the mounting cavity and rotates under the drive of the drive assembly.

2. The heat-dissipating and waterproof head structure according to claim 1, characterized in that, A second blocking ring is provided on the exhaust plate, and the second blocking ring surrounds the outer periphery of the exhaust protrusion; the inner peripheral wall of the first blocking ring is spaced apart from the outer peripheral wall of the exhaust protrusion; the bottom end of the first blocking ring is located between the exhaust protrusion and the second blocking ring; the top end of the second blocking ring is spaced apart from the periphery of the exhaust cover to form a second exhaust gap.

3. The heat dissipation and waterproof head structure according to claim 2, characterized in that, The exhaust cover is provided with a third blocking ring around its periphery, and the exhaust plate is provided with a fourth blocking ring around its periphery. The third blocking ring and the fourth blocking ring are provided correspondingly and are spaced apart to form a third exhaust interval.

4. The heat dissipation and waterproof head structure according to claim 2, characterized in that, The exhaust cover is provided with a plurality of positioning ribs, which are spaced apart in the circumferential direction of the exhaust cover; the plurality of positioning ribs abut against the outer peripheral wall of the second blocking ring.

5. The heat-dissipating and waterproof head structure according to claim 4, characterized in that, The positioning rib includes a positioning segment and two abutting segments, the positioning segment being connected to the vent cover; The two abutting segments are spaced apart on both sides of the positioning segment.

6. The heat-dissipating and waterproof head structure according to claim 1, characterized in that, The top of the exhaust protrusion is provided with multiple exhaust holes.

7. The heat-dissipating and waterproof head structure according to claim 1, characterized in that, The bottom of the exhaust cover is provided with a positioning post; the top of the exhaust boss is provided with a positioning groove, and the positioning post is inserted into the positioning groove.

8. The heat-dissipating and waterproof head structure according to any one of claims 1-7, characterized in that, The base is provided with a positioning boss and a positioning sleeve at its bottom end, and the positioning sleeve surrounds the outer periphery of the positioning boss; the positioning boss includes a first positioning section and a second positioning section that are axially connected to each other, and the outer diameter of the first positioning section is larger than the outer diameter of the second positioning section; the mounting cavity extends into the interior of the positioning boss; the through channel is provided on the bottom end face of the second positioning section.

9. The heat-dissipating and waterproof head structure according to claim 8, characterized in that, The drive assembly includes a drive motor and a gear transmission mechanism. The shaft of the drive motor is connected to the drive shaft via the gear transmission mechanism. The drive motor is a dual-axis motor. One shaft of the dual-axis motor is connected to the drive shaft via the gear transmission mechanism, and the other shaft of the dual-axis motor is connected to the cooling fan.

10. A baby food maker, characterized in that, Includes the heat-dissipating and waterproof head structure according to any one of claims 1-9.

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