Novel coffee grinder

This coffee grinder, with its worm gear and rotary wheel transmission mechanism and sliding column and groove design, solves the problem of uneven coffee bean grinding in existing technologies, and achieves an efficient and convenient coffee grinding experience.

CN224125780UActive Publication Date: 2026-04-17SHAOXING SHANGYU SHUNXING ELECTRICAL APPLIANCES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAOXING SHANGYU SHUNXING ELECTRICAL APPLIANCES CO LTD
Filing Date
2025-05-13
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing coffee grinders cannot flexibly adjust grinding parameters according to the physical characteristics of different coffee bean varieties, such as hardness and moisture content, resulting in insufficient grinding and failure to fully release the aroma and flavor of the coffee.

Method used

The transmission mechanism consists of a worm gear and a rotating wheel, which combines the friction of the upper and lower grinding wheels to achieve uniform grinding. The design of the sliding column and the sliding groove enables the stable installation and disassembly of the material cylinder, as well as convenient cleaning and maintenance.

Benefits of technology

It improves the uniformity and efficiency of coffee bean grinding, ensures the full release of aroma and flavor, simplifies the installation and disassembly process of the container, and enhances ease of use and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of coffee grinding machines, and discloses a novel coffee grinding machine which comprises a coffee machine shell, a charging barrel is fixedly connected to the middle space area of the top of the coffee machine shell, a barrel cover is fixedly connected to the middle space area of the top of the charging barrel, and a grinding mechanism is arranged in the coffee machine shell. A detachable mechanism is arranged at the bottom of the charging barrel, the grinding mechanism comprises a coffee machine shell, a driving assembly is fixedly connected to a hollow space area in the coffee machine shell, a transmission shaft is fixedly connected to the output end of the driving assembly, and a grinding connecting frame is fixedly connected to the exterior of the transmission shaft. According to the coffee bean grinding machine, a transmission mechanism composed of the worm wheel disc and the rotating wheel can enable coffee beans to evenly fall between the grinding wheels, the phenomenon that the coffee beans are prone to being stacked or blocked in a traditional grinding machine is avoided, the grinding efficiency is effectively improved, the coffee beans can be ground to be finer and more even, and the grinding quality is guaranteed.
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Description

Technical Field

[0001] This utility model relates to the field of coffee grinder technology, and in particular to a novel coffee grinder. Background Technology

[0002] When grinding coffee, a new type of coffee grinder is often used as a kitchen appliance. It can more precisely control the degree of grinding of coffee beans to meet different taste needs, allowing the aroma and flavor of coffee to be fully released. It is usually more convenient to operate, saving time and effort. The new coffee grinder combines advanced technology and innovative design, and has significantly improved grinding efficiency and uniformity. People use it so that they can easily enjoy the high-quality taste and unique experience of freshly ground coffee at home, making the coffee making process more fun and professional.

[0003] The new coffee grinder first places coffee beans into the grinder's container. Then, the user selects the desired grind size, usually by rotating a dial or setting it on a touchscreen. Next, the grinder is started, and the built-in burrs begin to grind the coffee beans evenly at the set size. Finally, the ground coffee falls into a collection container or goes directly into the coffee machine for brewing. The entire process aims to preserve the fresh flavor and aroma of the coffee beans while providing a customized grinding experience.

[0004] In some existing coffee grinders, the significant differences in physical properties such as hardness and moisture content among different coffee bean varieties, coupled with varying consumer preferences for coffee strength, make it difficult for existing grinders to flexibly adjust grinding parameters to accommodate these variations. The fixed grinding spacing means the grinding disc's compression and cutting force on the coffee beans is ill-suited to the characteristics of different beans. When dealing with harder coffee beans, the grinding disc cannot adequately break them down, resulting in a large number of beans failing to achieve the desired grind size, leading to under-grinding. Under-grinded coffee beans do not have their cell structure fully broken down, hindering the effective release of aroma and flavor components during brewing. This results in a weak aroma and thin taste, failing to meet consumers' demands for high-quality coffee. Therefore, a new type of coffee grinder is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a new type of coffee grinder, which aims to improve the problem that some existing devices cannot grind coffee beans.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel coffee grinder includes a coffee machine casing. A material cylinder is fixedly connected to the top central space of the coffee machine casing, and a lid is fixedly connected to the top central space of the material cylinder. A grinding mechanism is arranged inside the coffee machine casing, and a detachable mechanism is arranged at the bottom of the material cylinder. The grinding mechanism includes the coffee machine casing, a drive assembly is fixedly connected to the internal central space of the coffee machine casing, a drive shaft is fixedly connected to the output end of the drive assembly, a grinding connection frame is fixedly connected to the outside of the drive shaft, a lower grinding wheel is fixedly connected to the outside of the drive shaft, an upper grinding wheel is fixedly connected to the internal central space of the lower grinding wheel, a worm gear is fixedly connected to the outside of the drive shaft, a rotating wheel is fixedly connected to the internal central space of the worm gear, a discharge hole is opened on the right side of the outside of the lower grinding wheel, the outside of the upper grinding wheel is fixedly connected to the outside of the drive shaft, and the outside of the worm gear is rotatably connected to the inside of the material cylinder.

[0008] As a further description of the above technical solution:

[0009] The detachable mechanism includes a material cylinder, a top seat is fixedly connected to the bottom space of the material cylinder, a plurality of sliding columns are fixedly connected to one side of the top seat, and sliders are fixedly connected to the left and right sides of the plurality of sliding columns.

[0010] As a further description of the above technical solution:

[0011] The drive assembly includes a motor, which is externally fixedly connected to the inside of the coffee machine housing, and the drive shaft is externally fixedly connected to the output end of the lower grinding wheel;

[0012] As a further description of the above technical solution:

[0013] A base is fixedly connected to the top space of the coffee machine casing. The base has multiple slots, and the slider is externally slidably connected to the inside of the slots.

[0014] As a further description of the above technical solution:

[0015] The base has a sliding groove in its interior space, and a slot is provided at the bottom of the sliding groove. The sliding column is slidably connected to the inside of the sliding groove.

[0016] As a further description of the above technical solution:

[0017] A material receiving bin is fixedly connected to the outer right side of the coffee machine casing, and a control switch is fixedly connected to the top space of the material receiving bin.

[0018] As a further description of the above technical solution:

[0019] The bottom right side of the receiving hopper is fixedly connected to the discharge port, and the right side of the coffee machine casing is fixedly connected to the base.

[0020] As a further description of the above technical solution:

[0021] A limiting bracket is fixedly connected to the outer right side of the coffee machine casing, and a cup is fixedly connected to the inner space area of ​​the limiting bracket.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the transmission mechanism composed of the worm gear and the rotating wheel enables coffee beans to fall evenly between the grinding wheels, avoiding the accumulation or clogging of coffee beans that is common in traditional grinders, effectively improving grinding efficiency. The friction generated by the relative rotation of the upper and lower grinding wheels can grind the coffee beans more finely and evenly, ensuring grinding quality and helping to fully release the aroma and flavor of the coffee beans. The design of the sealed barrel prevents coffee beans from splashing during the grinding process and reduces dust overflow, creating a cleaner operating environment for users. The combination of the discharge hole and the collection device allows the ground coffee powder to be collected conveniently and smoothly, simplifying the subsequent processing procedures and improving the overall convenience and practicality of use, bringing users an efficient, high-quality and comfortable coffee grinding experience.

[0024] 2. In this utility model, the precise cooperation between the sliding column and the sliding groove, and the slider and the slot provides a clear and definite guiding path for the installation and disassembly of the material cylinder, greatly reducing the installation difficulty. Even non-professionals can quickly and accurately complete the installation of the material cylinder. The design of the sliding column being inserted into the slot effectively enhances the stability of the material cylinder after installation, avoiding shaking or displacement during use, and ensuring the stability and reliability of the coffee machine's operation. The reverse sliding disassembly method is not only simple and quick, but also reduces the risk of damage to coffee machine parts during disassembly, improves maintenance efficiency, reduces maintenance costs, and brings users a more convenient and worry-free user experience. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the novel coffee grinder proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the material cylinder of the novel coffee grinder proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the rotor of the novel coffee grinder proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the top seat of the novel coffee grinder proposed in this utility model.

[0029] Legend:

[0030] 1. Coffee machine casing; 2. Grinding can; 3. Lid; 4. Motor; 5. Drive shaft; 6. Grinding connection frame; 7. Lower grinding wheel; 8. Upper grinding wheel; 9. Worm gear; 10. Rotary wheel; 11. Discharge hole; 12. Top seat; 13. Sliding column; 14. Sliding block; 15. Base one; 16. Slot; 17. Slide groove; 18. Card slot; 19. Grinding can; 20. Control switch; 21. Discharge port; 22. Base two; 23. Limiting frame; 24. Cup. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1 to 2 The present invention provides an embodiment of a novel coffee grinder, comprising a coffee machine housing 1, which serves as the support and protection structure for the entire coffee grinder, preventing external dust, moisture and other impurities from entering, and also providing a certain degree of sound insulation to reduce the transmission of noise generated during the grinding process. A feed cylinder 2 is fixedly connected to the top space of the coffee machine housing 1 for storing coffee beans to be ground. A lid 3 is fixedly connected to the top space of the feed cylinder 2 for sealing the feed cylinder 2, preventing the coffee beans from getting damp, oxidizing and external dust from entering the feed cylinder 2. A grinding mechanism is provided inside the coffee machine housing 1, and a detachable mechanism is provided at the bottom of the feed cylinder 2.

[0033] The grinding mechanism includes a coffee machine housing 1. A drive assembly is fixedly connected to the internal space of the coffee machine housing 1 to provide power to the grinding mechanism. The output shaft drives the transmission shaft 5 to rotate, thereby driving the lower grinding wheel 7 and the upper grinding wheel 8 to grind coffee beans. The output end of the drive assembly is fixedly connected to the transmission shaft 5, which is the transmission component between the drive assembly and the grinding wheels. It transmits the power of the motor 4 to the lower grinding wheel 7 and the upper grinding wheel 8, enabling them to rotate synchronously for grinding. A grinding connection frame 6 is fixedly connected to the outside of the transmission shaft 5 to fix the lower grinding wheel 7 and the upper grinding wheel 8, ensuring stability during rotation. At the same time, the grinding connection frame 6 also plays a certain supporting and positioning role, so that the grinding wheels can be accurately connected to the transmission shaft 5.

[0034] The lower grinding wheel 7 is fixedly connected to the outside of the drive shaft 5. The lower grinding wheel 7 and the upper grinding wheel 8 cooperate with each other and grind the coffee beans into powder through the friction generated by their relative rotation. The grinding precision and efficiency directly affect the taste and quality of the coffee. The upper grinding wheel 8 is fixedly connected to the internal space of the lower grinding wheel 7. The lower grinding wheel 7 and the upper grinding wheel 8 cooperate with each other and grind the coffee beans into powder through the friction generated by their relative rotation. The grinding precision and efficiency directly affect the taste and quality of the coffee. The worm gear 9 is fixedly connected to the outside of the drive shaft 5 and forms a transmission mechanism with the rotating wheel 10. The rotational motion of the drive shaft 5 is transmitted to the coffee beans in the barrel 2, so that the coffee beans can fall evenly between the grinding wheels for grinding.

[0035] The inner space of the worm gear disk 9 is fixedly connected to the rotating wheel 10, which together with the worm gear disk 9 form a transmission mechanism to transmit the rotational motion of the transmission shaft 5 to the coffee beans in the feed cylinder 2, so that the coffee beans can fall evenly between the grinding wheels for grinding. The lower grinding wheel 7 has a discharge hole 11 on the outer right side for discharging the ground coffee powder. The ground coffee powder enters the collection device of the coffee grinder through the discharge hole 11 for user convenience. The upper grinding wheel 8 is fixedly connected to the outside of the transmission shaft 5, and the worm gear disk 9 is rotatably connected to the inside of the feed cylinder 2.

[0036] The detachable mechanism includes a material cylinder 2. A top seat 12 is fixedly connected to the bottom space of the material cylinder 2, which is the connecting component between the material cylinder 2 and the lower sliding column 13. It serves to fix and support the sliding column 13, ensuring that the sliding column 13 can be stably installed and removed with the material cylinder 2. Multiple sliding columns 13 are fixedly connected to the outer side of the top seat 12. The sliding column 13 is one of the key components for realizing the detachable connection between the material cylinder 2 and the coffee machine housing 1. By sliding in the sliding groove 17, the material cylinder 2 is guided to be accurately installed on the coffee machine housing 1 and smoothly detached during disassembly. Slider 14 is fixedly connected to the left and right sides of the multiple sliding columns 13. It cooperates with the slot 16 and plays a role in auxiliary positioning and guidance. During the installation and disassembly of the material cylinder 2, the slider 14 slides in the slot 16 to ensure the accurate installation position of the material cylinder 2 and also increase the stability of the connection.

[0037] Reference Figures 2 to 3 The drive assembly includes a motor 4, which is externally fixedly connected to the inside of the coffee machine housing 1. The drive shaft 5 is externally fixedly connected to the output end of the lower grinding wheel 7. A base 15 is fixedly connected to the top space of the coffee machine housing 1, providing support and positioning for the installation of the material cylinder 2. The material cylinder 2 is detachably connected by cooperating with the sliding column 13 and the slider 14 through the slot 16, the sliding groove 17 and the locking groove 18. The base 15 has multiple slots 16 inside, providing a sliding channel for the slider 14. During the installation and removal of the material cylinder 2, the movement trajectory of the slider 14 is restricted, thereby ensuring the accurate installation and removal of the material cylinder 2.

[0038] The slider 14 is externally slidably connected to the inside of the slot 16. The space inside the base 15 is provided with a sliding groove 17, which provides a sliding track for the slide column 13, guiding the slide column 13 to slide within it, ensuring that the material cylinder 2 can be accurately installed on the coffee machine housing 1. The bottom of the sliding groove 17 is provided with a retaining groove 18, which is used to fix the slide column 13. When the material cylinder 2 is installed in place, the bottom of the slide column 13 will be locked into the retaining groove 18 to prevent the material cylinder 2 from shaking or shifting during use, increasing the stability of the connection. The external sliding connection of the slide column 13 is externally slidably connected to the inside of the sliding groove 17.

[0039] Reference Figures 3 to 4 A receiving hopper 19 is fixedly connected to the right side of the outer casing 1 of the coffee machine. It is a container for collecting ground coffee powder and is directly connected to the discharge port 11. It receives the coffee powder discharged from the grinding mechanism and prepares it for subsequent coffee brewing. A control switch 20 is fixedly connected to the top space of the receiving hopper 19. It is used to control the start, stop and grind fineness adjustment of the coffee machine. A discharge port 21 is fixedly connected to the bottom right side of the receiving hopper 19. The discharge port 21 is the channel through which the coffee powder flows out of the receiving hopper 19 and controls the flow speed and direction of the coffee powder.

[0040] A base 22 is fixedly connected to the right side of the coffee machine casing 1, which supports the receiving container 19 and ensures the stability of the receiving container 19 during use. A limit frame 23 is fixedly connected to the right side of the coffee machine casing 1 to fix the cup 24 and prevent the cup 24 from shaking or shifting when receiving coffee powder, ensuring that the coffee powder falls accurately into the cup 24. The cup 24 is fixedly connected to the inner space of the limit frame 23 to receive the coffee powder flowing out from the outlet 21, which is the container for the user to obtain the ground coffee powder.

[0041] Working principle: When the new coffee grinder is working, coffee beans are first put into the feed cylinder 2, the cylinder 2 is closed by the lid 3, the motor 4 is started, the motor 4 outputs power and transmits it to the lower grinding wheel 7 and the upper grinding wheel 8 through the transmission shaft 5. At the same time, the transmission shaft 5 drives the worm gear 9 and the rotating wheel 10 to rotate. The transmission mechanism composed of the worm gear 9 and the rotating wheel 10 transmits the rotational motion of the transmission shaft 5 to the coffee beans in the feed cylinder 2, so that the coffee beans fall evenly between the lower grinding wheel 7 and the upper grinding wheel 8. The lower grinding wheel 7 and the upper grinding wheel 8 cooperate with each other, and the friction generated by the relative rotation grinds the coffee beans into powder. The ground coffee powder enters the collection device of the coffee grinder through the discharge hole 11 on the right side of the lower grinding wheel 7.

[0042] When installing the cartridge 2, align the sliding column 13 with the sliding groove 17 and the slider 14 with the slot 16. Then, slide the sliding column 13 in the sliding groove 17 and the slider 14 in the slot 16 to guide the cartridge 2 accurately towards the coffee machine housing 1 until the bottom of the sliding column 13 is engaged in the slot 18, thus completing the installation of the cartridge 2. When removing the cartridge 2, reverse the operation, remove the sliding column 13 from the slot 18, and slide the sliding column 13 in the reverse direction in the sliding groove 17 and the slider 14 in the reverse direction in the slot 16, so that the cartridge 2 can be smoothly detached from the coffee machine housing 1.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new coffee grinder comprising a coffee machine housing (1) characterized by: A material cylinder (2) is fixedly connected to the top space area of ​​the coffee machine casing (1), and a bucket lid (3) is fixedly connected to the top space area of ​​the material cylinder (2). A grinding mechanism is provided inside the coffee machine casing (1), and a detachable mechanism is provided at the bottom of the material cylinder (2). The grinding mechanism includes a coffee machine housing (1), a drive assembly is fixedly connected to the internal space of the coffee machine housing (1), a drive shaft (5) is fixedly connected to the output end of the drive assembly, a grinding connection frame (6) is fixedly connected to the outside of the drive shaft (5), a lower grinding wheel (7) is fixedly connected to the outside of the drive shaft (5), an upper grinding wheel (8) is fixedly connected to the internal space of the lower grinding wheel (7), a worm gear disk (9) is fixedly connected to the outside of the drive shaft (5), a rotating wheel (10) is fixedly connected to the internal space of the worm gear disk (9), a discharge hole (11) is opened on the right side of the outside of the lower grinding wheel (7), the outside of the upper grinding wheel (8) is fixedly connected to the outside of the drive shaft (5), and the outside of the worm gear disk (9) is rotatably connected to the inside of the material cylinder (2).

2. The new coffee grinder as claimed in claim 1, wherein: The detachable mechanism includes a material cylinder (2), a top seat (12) is fixedly connected to the bottom space area of ​​the material cylinder (2), a plurality of sliding columns (13) are fixedly connected to one side of the top seat (12), and sliders (14) are fixedly connected to the left and right sides of the plurality of sliding columns (13).

3. The new coffee grinder as claimed in claim 1, wherein: The drive assembly includes a motor (4), which is externally fixedly connected to the inside of the coffee machine housing (1), and the drive shaft (5) is externally fixedly connected to the output end of the lower grinding wheel (7).

4. The new coffee grinder as claimed in claim 2, wherein: A base (15) is fixedly connected to the top space of the coffee machine casing (1). The base (15) has multiple slots (16) inside. The slider (14) is externally slidably connected to the inside of the slots (16).

5. The new coffee grinder as claimed in claim 4, wherein: The base (15) has a groove (17) in the inner space area, and a slot (18) is provided at the bottom of the groove (17). The sliding column (13) is slidably connected to the inside of the groove (17).

6. The new coffee grinder as claimed in claim 1, wherein: A material receiving bin (19) is fixedly connected to the outer right side of the coffee machine casing (1), and a control switch (20) is fixedly connected to the top space area of ​​the material receiving bin (19).

7. The new coffee grinder as claimed in claim 6, wherein: The bottom right side of the receiving bucket (19) is fixedly connected to the outlet (21), and the outer right side of the coffee machine casing (1) is fixedly connected to the base (22).

8. The new coffee grinder as claimed in claim 1, wherein: A limiting frame (23) is fixedly connected to the outer right side of the coffee machine casing (1), and a cup (24) is fixedly connected to the inner space area of ​​the limiting frame (23).