A portable grinder

Abstract

The application discloses a portable grinder, which belongs to the technical field of household appliances and specifically relates to a portable grinder which comprises an upper shell, a grinding part arranged at the lower end of the upper shell, and a lower cup body. The grinding part comprises a driving shaft rotatably connected to the lower end of the upper shell, a conical head fixedly connected to the lower end of the driving shaft, and a grinding blade fixedly connected to the lower end of the conical head. A driving motor is fixedly connected to the inside of the upper shell, and the output shaft of the driving motor is fixedly connected to the driving shaft. The conical head is arranged on the driving shaft, and the conical head is located above the grinding blade. When the material moves and falls in the lower cup body, the conical head first receives the falling material. The conical surface of the conical head disperses the material to all directions, guides the material to be evenly spread in the radial direction, and then the material falls on the lower grinding blade, so that the direct impact on the center of the blade (usually the most fragile or stress-concentrated area) is reduced, the connection between the blade and the transmission shaft is protected, the service life of the blade is prolonged, and the failure risk is reduced.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, specifically a portable grinder. Background Technology

[0002] A grinder is a device that uses physical mechanical force to crush and grind solid materials into fine powder or granules. In daily life, grinders are needed to crush various materials such as coffee beans, Chinese herbal medicines, and spices.

[0003] To meet users' portability needs, grinders the size of a water cup have appeared on the market. The size and internal parts of these small grinders have been miniaturized. However, when grinding, especially when grinding hard materials, the grinding blades inside these small grinders rotate and move the material inside the cup. The hard material may directly hit the center of the blade head during movement, causing the blade to deform or break, resulting in a shorter lifespan for the blade head. Utility Model Content

[0004] The purpose of this application is to provide a portable grinder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a portable grinder, comprising an upper housing, a grinding section disposed at the lower end of the upper housing, and a lower cup body.

[0006] The grinding section includes a drive shaft rotatably connected to the lower end of the upper housing, a conical head fixed to the lower end of the drive shaft, and a grinding blade fixed to the lower end of the conical head. A drive motor is fixedly connected inside the upper housing, and the output shaft of the drive motor is fixedly connected to the drive shaft.

[0007] In one embodiment, the lower end of the upper shell is connected to the upper end of the lower cup body, and the connection method includes screwing, snap-fitting, fastening, and magnetic attraction.

[0008] In one embodiment, a suction cup is fixedly attached to the lower end of the lower cup body.

[0009] In one embodiment, the bottom of the inner wall of the lower cup body is provided with an inner arc angle.

[0010] In one embodiment, a button is fixedly attached to the outer surface of the upper housing, and a second circuit board is fixedly attached to the inside of the upper housing. The second circuit board is linearly connected to the button and the drive motor.

[0011] In one embodiment, a lamp ring is also fixedly attached to the outer surface of the upper housing, and the lamp ring is sleeved around the button. The lamp ring is linearly connected to the circuit board.

[0012] In one embodiment, a wireless charging unit is fixedly connected to the outer surface of the upper housing, and a circuit board one and a power storage unit are fixedly connected inside the upper housing. The circuit board one is linearly connected to the power storage unit and the wireless charging unit, and the power storage unit is linearly connected to the circuit board two.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] 1) This application features a conical head on the drive shaft, positioned above the grinding blade. When material moves and falls inside the lower cup, the conical head first catches the falling material. Its conical surface disperses the material in all directions, guiding it to spread more evenly radially before it falls onto the grinding blade below. This reduces direct impact on the center of the blade (usually the weakest or most stress-concentrated area), protects the connection between the blade and the drive shaft, extends the blade's lifespan, and reduces the risk of failure.

[0015] 2) This product is based on a cylindrical shape with large rounded corners, resulting in a smooth overall appearance that presents a simple and sophisticated visual effect while providing a comfortable grip. Its compact size allows it to be easily stored in a backpack, office drawer, etc., meeting users' needs for on-the-go grinding in various scenarios such as home, office, and travel. The wireless charging function further enhances its flexibility and convenience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the wireless charging unit structure of this application;

[0018] Figure 3 This is a schematic diagram of the grinding section structure in this application;

[0019] Figure 4 This is a schematic diagram of the drive motor, energy storage unit, circuit board one, and circuit board two of this application;

[0020] Figure 5 This is a cross-sectional view of the cup body in this application.

[0021] In the diagram: 1. Upper shell; 11. Light ring; 2. Lower cup body; 21. Inner arc angle; 3. Button; 4. Suction cup; 5. Wireless charging unit; 6. Grinding unit; 61. Drive shaft; 62. Conical head; 63. Grinding blade; 7. Drive motor; 8. Energy storage unit; 9. Circuit board one; 10. Circuit board two. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 application 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 application.

[0024] Example:

[0025] Please see Figure 1-5 This application provides a technical solution: a portable grinder, including an upper shell 1, a grinding part 6 disposed at the lower end of the upper shell 1, and a lower cup 2. The upper shell 1 and the lower cup 2 can be combined to form a cylinder, and the upper end of the upper shell 1 and the lower end of the lower cup 2 are both provided with large rounded corners, making the overall appearance of this application rounded, presenting a simple and high-end visual effect, and also having a good grip feel. At the same time, it is small and compact, and can be easily stored in a backpack, office drawer, etc., to meet the grinding needs of users in various scenarios such as home, office, and travel.

[0026] The grinding part 6 includes a drive shaft 61 rotatably connected to the lower end of the upper housing 1, a conical head 62 fixed to the lower end of the drive shaft 61, and a grinding blade 63 fixed to the lower end of the conical head 62. A drive motor 7 is fixedly connected inside the upper housing 1, and the output shaft of the drive motor 7 is fixedly connected to the drive shaft 61.

[0027] By providing a tapered head 62 on the drive shaft 61, and the tapered head 62 being positioned above the grinding blade 63 (from... Figure 3 and Figure 4 As can be seen, the cutting head of the grinding blade 63 extends outward from the bottom of the conical head 62 (meaning the cutting head of the grinding blade 63 extends beyond the outer edge of the conical head 62). When the material moves and falls inside the lower cup body 2, the conical head 62 first catches the falling material. Its conical surface disperses the material in all directions, guiding it to spread more evenly radially before it falls onto the grinding blade 63 below. This reduces direct impact on the center of the cutting head (usually the weakest or most stress-concentrated area), protects the connection between the blade and the drive shaft 61, extends the life of the cutting head, and reduces the risk of failure.

[0028] The lower end of the upper shell 1 is connected to the upper end of the lower cup body 2, and the connection method includes screw connection, snap connection, fastening connection, and magnetic attraction. One of the above connection methods can be used to connect the upper shell 1 and the lower cup body 2.

[0029] Please see Figure 2 The lower cup body 2 is fixedly connected to a suction cup 4 at its lower end. The lower cup body 2 can be attached to the table surface by the suction cup 4, which can ensure that the machine remains stable during grinding and is not easy to shake or tip over.

[0030] The bottom of the inner wall of the lower cup body 2 is provided with an inner arc angle 21 to eliminate right-angle dead corners. The material naturally gathers towards the center along the smooth arc surface. When the conical head 62 and the grinding blade 63 rotate, centrifugal force is generated, which throws the material towards the inner cup wall and then slides back to the center along the inner arc angle 21. The material is repeatedly circulated and ground in the lower cup body 2 to reduce dead corners.

[0031] Please see Figure 1 and Figure 4 A button 3 is fixedly attached to the outer surface of the upper housing 1, and a circuit board 2 10 is fixedly attached inside the upper housing 1. The circuit board 2 10 is linearly connected to the button 3 and the drive motor 7. By pressing the button 3, a signal can be output to the circuit board 2 10, and the circuit board 2 10 controls the drive motor 7 to start, change speed and stop.

[0032] Please see Figure 1 and Figure 4 A light ring 11 is also fixedly attached to the outer surface of the upper housing 1, and the light ring 11 is sleeved around the button 3. The light ring 11 is linearly connected to the circuit board 2 10. The light ring 11 uses different light colors to indicate the working status and grinding level of the grinder, giving the user intuitive feedback.

[0033] Please see Figure 2 and Figure 4 The outer surface of the upper housing 1 is fixedly connected to a wireless charging unit 5, and the upper housing 1 is fixedly connected to a circuit board 9 and a power storage unit 8. The circuit board 9 is linearly connected to the power storage unit 8 and the wireless charging unit 5. The power storage unit 8 is linearly connected to the circuit board 10. The wireless charging function further enhances the flexibility and convenience of use. The power storage unit 8 uses a battery to provide the power required for the operation of this application. Both the circuit board 9 and the circuit board 10 are PCB boards. The control of the motor, the light ring 11 and the charging by the PCB board are mature existing technologies, which will not be described in detail here.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this application. It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or basic characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this application is defined by the appended claims rather than the foregoing description. Therefore, it is intended to encompass all variations falling within the meaning and scope of equivalents of the claims within this application, and no reference numerals in the claims should be regarded as limiting the scope of the claims.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable grinder, comprising an upper housing (1), a grinding section (6) disposed at the lower end of the upper housing (1), and a lower cup body (2), characterized in that: The grinding part (6) includes a drive shaft (61) rotatably connected to the lower end of the upper housing (1), a conical head (62) fixed to the lower end of the drive shaft (61), and a grinding blade (63) fixed to the lower end of the conical head (62). A drive motor (7) is fixedly connected inside the upper housing (1), and the output shaft of the drive motor (7) is fixedly connected to the drive shaft (61).

2. A portable sander according to claim 1, characterized in that: The lower end of the upper shell (1) is connected to the upper end of the lower cup body (2), and the connection methods include screw connection, snap connection, fastening connection, and magnetic attraction.

3. A portable sander according to claim 2, wherein: A suction cup (4) is fixedly attached to the lower end of the lower cup body (2).

4. A portable sander according to claim 1 or 3, wherein: The bottom of the inner wall of the lower cup body (2) is provided with an inner arc angle (21).

5. A portable sander according to claim 4, wherein: A button (3) is fixedly attached to the outer surface of the upper housing (1), and a second circuit board (10) is fixedly attached inside the upper housing (1). The second circuit board (10) is linearly connected to the button (3) and the drive motor (7).

6. A portable sander according to claim 5 wherein: A lamp ring (11) is also fixedly attached to the outer surface of the upper housing (1), and the lamp ring (11) is sleeved around the button (3). The lamp ring (11) is linearly connected to the second circuit board (10).

7. A portable grinder according to claim 6, characterized in that: The outer surface of the upper housing (1) is fixed with a wireless charging unit (5), and the upper housing (1) is fixed with a circuit board (9) and a power storage unit (8). The circuit board (9) is linearly connected to the power storage unit (8) and the wireless charging unit (5), and the power storage unit (8) is linearly connected to the circuit board (10).

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