Stirring device for milk foam machine and milk foam machine

By incorporating a detachable limiting block and magnetic drive into the milk frother's mixer, the problem of the mixer falling and injuring users has been solved, thus improving both safety and convenience.

CN224235200UActive Publication Date: 2026-05-15NINGBO BIYI ELECTRIC APPLIANCE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO BIYI ELECTRIC APPLIANCE
Filing Date
2025-03-25
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The agitator in existing milk frothers is prone to being poured out along with the milk foam, increasing the safety hazard of users being injured by falling objects. At the same time, it is troublesome to disassemble and affects the convenience of cleaning.

Method used

A detachable limiting block is installed on the stirrer. The limiting block has a raised rib that can abut against the groove of the ejector pin to limit and fix the stirrer and prevent it from falling. The stirrer can be rotated through magnetic transmission.

Benefits of technology

It effectively prevents the mixer from falling and injuring users, reducing safety hazards, while also being easy to disassemble and improve cleaning convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a stirring device for a milk foam machine and the milk foam machine, the stirring device comprises an ejector pin, a stirrer and a limiting block, the ejector pin is used for being fixedly arranged on the inner bottom wall of a cup body; a sleeving groove is formed in the bottom of the stirrer, and the stirrer is rotatably arranged on the ejector pin in a sleeving manner through the sleeving groove; and the limiting block is detachably clamped on the stirrer. Wherein a groove is formed in the peripheral surface of the ejector pin, a convex rib at least partially extending into the groove is arranged on the limiting block, and when milk foam in the cup body is poured out, the stirrer can be limited and fixed through the convex rib on the limiting block abutting against the groove of the ejector pin. Therefore, by arranging the detachable limiting block on the stirrer, when a user pours out milk foam in the cup body, the convex rib on the limiting block can abut against the ejector pin groove to limit the stirrer, so that the stirrer is prevented from falling off, the user is prevented from being injured by crashing, and potential safety hazards are reduced. In addition, when the stirrer needs to be detached for cleaning, only the limiting block needs to be pulled out, so that the operation is simple and convenient.
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Description

Technical Field

[0001] This utility model relates to the field of milk frother technology, and in particular to a stirring device for a milk frother and a milk frother. Background Technology

[0002] Existing milk frothers are generally divided into steam-type and mechanical-type. Steam-type milk frothers typically use a steam pipe to deliver steam to a container of milk, thereby creating milk foam. Mechanical-type milk frothers use a stirrer that rotates at an appropriate speed in the container of milk, quickly incorporating and mixing air into the milk to form milk foam.

[0003] The mixer used for frothing milk is usually placed directly at the bottom of the container. In this case, the mixer is not fixedly connected to the bottom of the container. When the user finishes using the milk frother and pours out the milk foam, the mixer is likely to be poured out along with the milk foam, which could easily injure the user and increase the safety hazard.

[0004] To address this issue, some vendors have solved the problem of the stirrer being poured out with the milk foam and potentially injuring users by rotating and locking it to the bottom of the container. However, because the stirrer is rotated and locked to the bottom of the container, disassembly is quite troublesome, making it difficult for users to remove and clean it. Utility Model Content

[0005] In order to overcome at least one of the defects of the prior art, the present invention provides a stirring device for a milk frother and a milk frother. By setting a detachable limiting block on the stirrer, when the user pours out the milk foam in the cup, the protrusion on the limiting block can abut against the groove of the ejector pin to limit the stirrer, thereby preventing the stirrer from falling and thus avoiding injury to the user and reducing safety hazards.

[0006] The technical solution adopted by this utility model to solve its problem is:

[0007] A stirring device for a milk frother, comprising:

[0008] A pin, which is used to fix the cup body to the inner bottom wall;

[0009] A stirrer has a socket groove at its bottom; the stirrer is rotatably fitted onto the ejector pin through the socket groove.

[0010] A limiting block is detachably mounted on the stirrer; a groove is provided on the outer peripheral surface of the ejector pin, and a rib is provided on the limiting block that extends at least partially into the groove.

[0011] When the milk foam in the cup is poured out, the stirrer can be fixed in place by the ribs abutting against the grooves.

[0012] Furthermore, the stirrer includes a stirring support and a stirring spring disposed on the stirring support, wherein:

[0013] The bottom of the stirring bracket is provided with the sleeve groove;

[0014] The limiting block is detachably mounted on the stirring bracket.

[0015] Further, the stirring support includes a support column, a support platform disposed at the bottom of the support column, and a plurality of support blocks spaced around the outer circumference of the support column and located above the support platform, wherein:

[0016] The support platform has a through first groove, and the support column has a second groove inside. The first groove and the second groove are interconnected to form the socket groove.

[0017] The stirring spring is mounted on the outer peripheral surface of the plurality of support blocks;

[0018] The limiting block is detachably mounted on the outer circumferential surface of the support column and is located between the support blocks and the support platform, and the protruding rib extends at least partially into the second groove.

[0019] Furthermore, a first mounting groove extending circumferentially is provided on the outer peripheral surface of the support block, and a clamping ring is provided inside the stirring spring. The clamping ring is used to clamp and fix the stirring spring in the first mounting groove.

[0020] Furthermore, a mounting slot communicating with the second groove is provided on the outer circumferential surface of the support column, and the limiting block is detachably engaged in the mounting slot, wherein:

[0021] The support column has two first limiting protrusions spaced apart in the front-to-back direction at the mounting slot, and the limiting block has second limiting protrusions that engage with the two first limiting protrusions to restrict their movement in the front-to-back direction.

[0022] Furthermore, the support platform is also provided with a driven magnet, which is used to interact with the driving magnet in the host.

[0023] Furthermore, it also includes a cover plate, and the bottom of the support platform is provided with a second mounting groove for placing the driven magnet. The cover plate covers the bottom of the support platform and limits and fixes the driven magnet in the second mounting groove.

[0024] Furthermore, multiple driven magnets and second mounting slots are provided, and multiple second mounting slots are spaced apart and arranged around the outer periphery of the first slot.

[0025] In addition, this utility model also provides a milk frother, including a main unit, a cup body disposed on the main unit, and the aforementioned milk frother stirring device disposed in the cup body.

[0026] Furthermore, the main unit also includes a drive motor, a rotor mounted on the output shaft of the drive motor, and several drive magnets mounted inside the rotor for driving the stirrer to rotate.

[0027] In summary, the present invention provides a stirring device and a milk frother for a milk frother. By setting a detachable limiting block on the stirrer, the limiting block has a rib that extends at least partially into the groove of the ejector pin. When the user pours out the milk foam from the cup, the rib on the limiting block can abut against the groove on the ejector pin to limit the stirrer, thereby preventing the stirrer from falling and injuring the user, thus reducing safety hazards. In addition, when the stirrer needs to be removed for cleaning, the limiting block can be pulled out, making the operation simple and convenient. Attached Figure Description

[0028] Figure 1 This is an exploded view of part of the structure of the milk frother of this utility model;

[0029] Figure 2 This is a schematic diagram of the stirring support in the milk frother of this utility model;

[0030] Figure 3 This is a cross-sectional schematic diagram of the stirring support in the milk frother of this utility model;

[0031] Figure 4 This is a schematic diagram of the limiting block in the milk frother of this utility model;

[0032] Figure 5 This is a cross-sectional schematic diagram of a portion of the structure of the milk frother of this utility model;

[0033] Figure 6 This is another cross-sectional view of the structure of the milk frother of this utility model.

[0034] The meanings of the reference numerals in the attached figures are as follows:

[0035] 1. Cup body; 11. Ejector pin; 111. Groove; 2. Stirring bracket; 21. Support column; 211. Second trough; 22. Support platform; 221. First trough; 222. Second mounting groove; 23. Support block; 231. First mounting groove; 24. Mounting slot; 241. First limiting protrusion; 3. Limiting block; 31. Limiting block body; 32. Rib; 33. Second limiting protrusion; 4. Stirring spring; 5. Clamping ring; 6. Driven magnet; 7. Cover plate. Detailed Implementation

[0036] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0039] See Figure 1-6 This utility model provides a milk frother, including a main unit (not shown in the figure), a cup body 1 disposed on the main unit, and a stirring device disposed inside the cup body 1. The main unit contains a drive motor, and the output shaft of the drive motor has a rotor. The rotor contains several drive magnets for rotating the stirring device. The stirring device includes a stirring bracket 2 and several driven magnets 6 disposed on the stirring bracket 2. The magnetic poles of the driven magnets 6 are opposite to those of the driven magnets, thus achieving a transmission connection through magnetic attraction between them. Additionally, the stirring bracket 2 also has a stirring spring 4 for frothing milk.

[0040] Therefore, based on the above structure, when the cup body 1 is placed on the main unit, the magnetic attraction between the driven magnet 6 in the stirring bracket 2 and the driving magnet in the main unit ensures that the driven magnet 6 and the driving magnet are vertically aligned and that a transmission connection between them is achieved. Subsequently, when the main unit is started, the drive motor can drive the rotor to rotate, and the rotor can drive the stirring spring 4 on the stirring bracket 2 to rotate and stir the milk. During the stirring of the milk, the milk is in full contact with the stirring spring 4 in the cup body 1, and the resulting vortex air pressure continuously injects air into the milk to form rich foam, so that the milk can be fully foamed and the milk frothing effect is more complete.

[0041] The cup body 1 has a pin 11 fixedly installed on the inner bottom wall, and the bottom of the stirring bracket 2 has a sleeve groove, which is rotatably sleeved on the pin 11. In addition, it also includes a limiting block 3 that can be detachably locked on the stirring bracket 2. The outer peripheral surface of the pin 11 has a groove 111, and the limiting block 3 has a rib 32 that at least partially extends into the groove 111.

[0042] With this design, when the user pours out the milk foam from the cup 1, the stirring bracket 2 can drive the limiting block 3 to slide up and down along the axis of the ejector pin 11. The protruding rib 32 on the limiting block 3 abuts against the inner wall of the groove 111 to limit and fix the stirrer, thereby preventing the stirrer from falling and injuring the user, reducing safety hazards. In addition, when it is necessary to remove the stirring bracket 2 for cleaning, simply pull out the limiting block 3, making the operation simple and convenient.

[0043] In this embodiment, the groove 111 is arranged around the outer peripheral surface of the ejector pin 11. This arrangement allows the protruding ribs 32 on the limiting block 3 to partially extend into the groove 111 when the stirring bracket 2 is sleeved on the ejector pin 11 from any angle and the limiting block 3 is locked on the stirring bracket 2, thereby facilitating the assembly of the limiting block 3.

[0044] See Figure 2-3 as well as Figure 6 Specifically, the stirring bracket 2 includes a support column 21, a support platform 22 disposed at the bottom of the support column 21, and a plurality of support blocks 23 spaced around the outer circumference of the support column 21 and located above the support platform 22. The support platform 22 has a through first groove 221, and the support column 21 has a second groove 211 inside. The first groove 221 and the second groove 211 are interconnected and form a connecting groove. The stirring spring 4 is installed on the outer circumference of the plurality of support blocks 23. The limiting block 3 is detachably locked on the outer circumference of the support column 21 and located between the plurality of support blocks 23 and the support platform 22. The protruding rib 32 on the limiting block 3 extends at least partially into the second groove 211.

[0045] More specifically, a first mounting groove 231 extending circumferentially is formed on the outer peripheral surface of the support block 23. A clamping ring 5 passes through the stirring spring 4, and the clamping ring 5 clamps and fixes the stirring spring 4 in the first mounting groove 231 to achieve assembly and fixation. Preferably, the clamping ring 5 is an elastic clamping ring.

[0046] More specifically, the outer circumferential surface of the support column 21 is provided with a mounting slot 24 that communicates with the second groove 211. The limiting block 3 is detachably mounted on the mounting slot 24. The support column 21 is provided with two first limiting protrusions 241 spaced apart in the front-back direction at the mounting slot 24. The limiting block 3 is provided with second limiting protrusions 33 that respectively engage with the two first limiting protrusions 241 to restrict their movement in the front-back direction.

[0047] The limiting block 3 includes a limiting block body 31, on which the second limiting protrusions 33 are provided on both the front and rear sides. The rib 32 is disposed between the two second limiting protrusions 33. When the limiting block 3 is inserted into the mounting slot 24 in the left-right direction, the two second limiting protrusions 33 on the limiting block 3 are respectively engaged with the two first limiting protrusions 241 on the mounting slot 24, thereby restricting the movement of the limiting block 3 in the front-back direction. The movement of the limiting block 3 in the up-down direction is restricted by the support block 23 and the support platform 22, so that the limiting block 3 can only move in the left-right direction to engage or disengage from the mounting slot 24.

[0048] More preferably, in order to ensure that the limiting block 3 can be securely locked in the mounting slot 24, the limiting block 3 is provided with a groove at the second limiting protrusion 33 to provide a certain deformation space for the second limiting protrusion 33. The distance between the two second limiting protrusions 33 can be set to be slightly smaller than the distance between the two first limiting protrusions 241, so that the limiting block 3 can be interference-fitted with the support column 21, thereby ensuring that the limiting block 3 will not fall out of the mounting slot, thus ensuring a stable assembly.

[0049] More specifically, the driven magnet 6 is disposed within the support platform 22, the bottom of which has a second mounting groove 222 for placing the driven magnet 6; additionally, a cover plate 7 is provided on the bottom of the support platform 22, the cover plate 7 being used to limit and fix the driven magnet 6 within the second mounting groove 222. Preferably, multiple driven magnets 6 are provided and spaced apart around the outer periphery of the first groove 221.

[0050] In this embodiment, four driven magnets 6 are provided, and the number of the second mounting slot 222 and the number of the driving magnet are the same as the number of driven magnets 6.

[0051] In this embodiment, the support column 21, support platform 22 and several support blocks 23 in the stirring bracket 2 are all integrally formed.

[0052] In summary, the present invention provides a stirring device and a milk frother for a milk frother. By setting a detachable limiting block 3 on the stirrer, the limiting block 3 has a protruding rib 32 that at least partially extends into the groove 111 of the ejector pin 11. When the user pours out the milk foam from the cup 1, the protruding rib 32 on the limiting block 3 can abut against the groove 111 on the ejector pin 11 to limit the stirrer, thereby preventing the stirrer from falling and injuring the user, thus reducing safety hazards. In addition, when the stirrer needs to be removed for cleaning, the limiting block can be pulled out, making the operation simple and convenient.

[0053] 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 stirring device for a milk frother, characterized in that, include: A pin, which is used to fix the cup body to the inner bottom wall; A stirrer has a socket groove at its bottom; the stirrer is rotatably fitted onto the ejector pin through the socket groove. A limiting block is detachably mounted on the stirrer; a groove is provided on the outer peripheral surface of the ejector pin, and a rib is provided on the limiting block that extends at least partially into the groove. When the milk foam in the cup is poured out, the stirrer can be fixed in place by the ribs abutting against the grooves.

2. The stirring device for a milk frother according to claim 1, characterized in that, The stirrer includes a stirring support and a stirring spring disposed on the stirring support, wherein: The bottom of the stirring bracket is provided with the sleeve groove; The limiting block is detachably mounted on the stirring bracket.

3. The stirring device for a milk frother according to claim 2, characterized in that, The stirring support includes a support column, a support platform disposed at the bottom of the support column, and a plurality of support blocks spaced around the outer circumference of the support column and located above the support platform, wherein: The support platform has a through first groove, and the support column has a second groove inside. The first groove and the second groove are interconnected to form the socket groove. The stirring spring is mounted on the outer peripheral surface of the plurality of support blocks; The limiting block is detachably mounted on the outer circumferential surface of the support column and is located between the support blocks and the support platform, and the protruding rib extends at least partially into the second groove.

4. The stirring device for a milk frother according to claim 3, characterized in that, The outer circumferential surface of the support block is provided with a first mounting groove extending in the circumferential direction, and a clamping ring is provided inside the stirring spring. The clamping ring is used to clamp and fix the stirring spring in the first mounting groove.

5. The stirring device for a milk frother according to claim 3, characterized in that, The outer circumferential surface of the support column is provided with a mounting slot that communicates with the second groove. The limiting block is detachably engaged in the mounting slot, wherein: The support column has two first limiting protrusions spaced apart in the front-to-back direction at the mounting slot, and the limiting block has second limiting protrusions that engage with the two first limiting protrusions to restrict their movement in the front-to-back direction.

6. The stirring device for a milk frother according to claim 3, characterized in that, The support platform is also equipped with a driven magnet, which is used to interact with the driving magnet in the host.

7. The stirring device for a milk frother according to claim 6, characterized in that: It also includes a cover plate, and the bottom of the support platform has a second mounting groove for placing the driven magnet. The cover plate covers the bottom of the support platform and limits and fixes the driven magnet in the second mounting groove.

8. The stirring device for a milk frother according to claim 7, characterized in that: The driven magnet and the second mounting slot are both provided in multiples, and the multiple second mounting slots are spaced apart and arranged in a ring around the outer periphery of the first slot.

9. A milk frother, characterized in that, It includes a main unit, a cup body disposed on the main unit, and a stirring device for a milk frother disposed in the cup body as described in any one of claims 1-8.

10. The milk frother according to claim 9, characterized in that, The main unit also includes a drive motor, a rotor mounted on the output shaft of the drive motor, and several drive magnets mounted inside the rotor for driving the stirrer to rotate.