一种静音磨豆机
By combining a limit mechanism and a DC motor, the noise problem caused by the decrease in concentricity during the adjustment process of the coffee grinder is solved, thus improving the quietness and durability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing coffee grinders often experience a decrease in concentricity and an increase in noise when adjusting the distance between the upper and lower grinding blades.
The device employs a limiting mechanism, including limiting protrusions, limiting protrusions, limiting slots, limiting lugs, and concave steps, to ensure that the upper and lower grinding discs remain concentric during vertical movement. Precise adjustment is achieved through an adjusting seat and a return spring, and noise is reduced by combining it with a DC motor.
Maintaining the concentricity of the upper and lower grinding discs under different working conditions reduces noise and the chance of accidental collision damage, thus improving the quietness effect.
Smart Images
Figure CN224505257U_ABST
Abstract
Claims
1. A silent coffee grinder, characterized in that, The device includes a drive motor (1) and a tool holder mounting base (2). The tool holder mounting base (2) has a mounting cavity (21) and the mounting cavity (21) is concentrically arranged with the shaft of the drive motor (1). The mounting cavity (21) has a lower grinding disc (3). The lower grinding disc (3) is fixedly connected to the inner side of the lower grinding disc (3) and is concentrically arranged with the lower grinding powder blade (4). The lower grinding disc (3) is concentrically arranged with the mounting cavity (21). The tool holder mounting base (2) has an upper grinding disc (5) at a position above the lower grinding disc (3). The upper grinding disc (5) is fixedly connected to the inner side of the upper grinding disc (5) and is concentrically arranged with the upper grinding powder blade (8). A limiting mechanism is provided between the upper grinding disc (5) and the tool holder mounting base (2). The upper grinding disc (5) can move vertically and form different distances with the lower grinding disc (3). During the vertical movement of the upper grinding disc (5), it is kept concentrically arranged with the tool holder mounting base (2) through the limiting mechanism.
2. The silent coffee grinder according to claim 1, characterized in that: The limiting mechanism includes a limiting protrusion (53) disposed circumferentially at the bottom of the upper grinding disc (5), the limiting protrusion (53) extending downward to the mounting cavity (21) and contacting and cooperating with the inner wall of the mounting cavity (21).
3. The silent coffee grinder according to claim 1, characterized in that: The limiting mechanism includes several limiting protrusions (51) and limiting slots (26). The limiting protrusions (51) and limiting slots (26) are evenly distributed circumferentially on the upper grinding disc (5) and the tool holder mounting base (2). The limiting protrusions (51) and limiting slots (26) are both arranged vertically and are interlocked with each other.
4. The silent coffee grinder according to claim 3, characterized in that: The limiting mechanism also includes a limiting lug (52) and a limiting recess (22). The limiting lug (52) is located on the outer periphery of the upper grinding disc (5), and the limiting recess (22) is located on the tool holder mounting base (2). The limiting lug (52) and the limiting recess (22) are engaged and cooperated. The positions of the limiting protrusion (51) and the limiting slot (26) correspond to the limiting lug (52) and the limiting recess (22) respectively.
5. The silent coffee grinder of claim 3, wherein: The tool holder mounting base (2) is connected to an adjusting base (6), which abuts against the upper grinding disc (5). The adjusting base (6) moves up and down relative to the tool holder mounting base (2) through a threaded structure. A return spring (7) is provided in the limiting slot (26). The upper end of the return spring (7) is sleeved on the outside of the limiting protrusion (51). When the adjusting base (6) moves downward, it can push the upper grinding disc (5) to move downward synchronously and compress the return spring (7). When the adjusting base (6) moves upward, it can reset the return spring (7) and push the upper grinding disc (5) to move upward synchronously.
6. The silent coffee grinder according to claim 5, characterized in that: The tool holder mounting base (2) is provided with a limiting step (23) corresponding to the adjusting seat (6). The limiting step (23) prevents the adjusting seat (6) from moving downward by abutting against the adjusting seat (6).
7. The silent coffee grinder of claim 1, wherein: The drive motor (1) has a transmission shaft (11), and the lower grinding disc (3) has a transmission slot (32) corresponding to the transmission shaft (11). The transmission shaft (11) and the transmission slot (32) are inserted and engaged and locked by a screw device.
8. The silent coffee grinder of claim 1, wherein: The tool holder mounting base (2) is provided with a number of locking parts (24) distributed circumferentially, and each locking part (24) is locked and fixed to the drive motor (1) by a screw device.
9. The silent coffee grinder of claim 1, wherein: The tool holder mounting base (2) has a limiting hole (25) at its center position, and the drive motor (1) has a limiting ring (12) corresponding to the limiting hole (25). The limiting ring (12) is in contact with the inner wall of the limiting hole (25).
10. The silent coffee grinder according to any one of claims 1-9, characterized in that: The drive motor (1) is a DC motor.