Electric coffee grinder

Abstract

The utility model discloses an electric coffee bean grinder, comprising a first shell, a second shell, an inner grinding core, an outer grinding core and a main shaft; a driving member and a bearing seat are arranged in the first shell, a bearing is arranged in the bearing seat, and the first shell forms a concave connecting portion; the second shell is sleeved on the connecting portion of the first shell; the inner grinding core is arranged in the outer grinding core, and a contact gap is provided between the inner grinding core and the outer grinding core; the main shaft passes through the bearing, one end of the main shaft is connected with the driving member, and the other end is connected with the inner grinding core, when the first shell is rotated, the inner grinding core is driven to move through the first shell to adjust the contact gap between the inner grinding core and the outer grinding core, and the main shaft is driven by the driving member to drive the inner grinding core to rotate; thus, the first shell and the second shell are concentrically intersected with each other, so that the grinding accuracy is adjusted by external concentricity, and the grinding is electrically controlled at the same time, so that not only the grinding effect is good, but also the convenience of use is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, in particular to an electric coffee bean grinder. Background Art

[0002] At present, with the improvement of people's living standards, freshly ground coffee is becoming more and more common, and people have higher and higher requirements for the balance of coffee bean grinding. The more balanced the ground particles are, the better the coffee brewing effect is. The existing electric bean grinder needs to adjust the coarseness of coffee particles from the inside, and cannot be adjusted directly from the outside, which makes it inconvenient to use. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, one purpose of the utility model is to provide an electric coffee grinder, which realizes the grinding precision adjustment by external concentric adjustment through the intersection of the first shell and the concentric inner sleeve of the second shell, and the grinding is controlled by electric control at the same time, so that not only the grinding effect is good, but also the convenience of use is greatly improved.

[0004] To achieve the above-mentioned purpose, an electric coffee bean grinder proposed in an embodiment of the utility model includes a first shell, a driving member and a bearing seat are arranged in the first shell, a bearing is arranged in the bearing seat, and the first shell forms a recessed connecting portion; a second shell, the second shell is sleeved on the connecting portion of the first shell; an inner grinding core and an outer grinding core, the inner grinding core is arranged in the outer grinding core, and a contact gap is provided between the inner grinding core and the outer grinding core; a main shaft, the main shaft passes through the bearing, one end of the main shaft is connected to the driving member, and the other end is connected to the inner grinding core, when the first shell is rotated, the inner grinding core is driven to move by the first shell to adjust the contact gap between the inner grinding core and the outer grinding core, and the main shaft is driven by the driving member to drive the inner grinding core to rotate.

[0005] The electric coffee bean grinder proposed according to the embodiment of the utility model comprises a first shell, a second shell, an inner grinding core, an outer grinding core and a main shaft; a driving member and a bearing seat are arranged in the first shell, a bearing is arranged in the bearing seat, and the first shell forms a recessed connecting portion; the second shell is sleeved on the connecting portion of the first shell; the inner grinding core is arranged in the outer grinding core, and a contact gap is provided between the inner grinding core and the outer grinding core; the main shaft passes through the bearing, one end of the main shaft is connected to the driving member, and the other end is connected to the inner grinding core. When the first shell is rotated, the inner grinding core is driven to move through the first shell to adjust the contact gap between the inner grinding core and the outer grinding core, and the driving member drives the main shaft to drive the inner grinding core to rotate; thus, the first shell and the second shell are concentrically intersected with each other, so that the grinding accuracy is adjusted by external concentricity, and the grinding is controlled by electric power at the same time, so that not only the grinding effect is good, but also the convenience of use is greatly improved.

[0006] In addition, the electric coffee bean grinder proposed in the embodiment of the utility model may also have the following additional technical features:

[0007] Optionally, a first external thread and a first internal thread are provided on the connecting portion, a second internal thread and a third internal thread are provided on the second shell, the second shell is connected to the first external thread via the second internal thread, a second external thread is provided on the bearing seat, and the bearing seat is connected to the first internal thread via the second external thread.

[0008] Optionally, a pressing portion and a nut-shaped retaining spring are provided below the inner grinding core to limit the main shaft.

[0009] Optionally, the driving member is arranged above the bearing seat, and the driving member includes a motor, a battery and a circuit board. The battery provides power for the driving member, the circuit board controls the operation of the motor, and the motor drives the main shaft to drive the inner grinding core to rotate.

[0010] Optionally, the bearing includes a first bearing and a second bearing, a first stopper is arranged above the first bearing, and a second stopper is arranged below the second bearing.

[0011] Optionally, an elastic member sleeved on the main shaft is provided between the bearing seat and the inner grinding core.

[0012] Optionally, a limiting portion is further provided at the opening of the first shell, and the driving member is limited in the first shell by the limiting portion.

[0013] Optionally, an inclined bean guide member is arranged between the bearing seat and the outer grinding core, the driving member has a first channel, the bearing seat has a second channel, the first channel and the second channel are arranged opposite to each other, a material bin is formed by the first channel, the second channel and the bean guide member, and enters the contact gap between the inner grinding core and the outer grinding core under the guidance of the bean guide member.

[0014] Optionally, a third shell is further included, and a third external thread, a fourth internal thread and a limiting ring are arranged on the outside of the third shell. The third shell cooperates with the third internal thread through the third external thread to be connected to the second shell, and the external grinding core is limited by the limiting ring.

[0015] Optionally, a powder bin is further included, and a fourth external thread is provided on the powder bin. The powder bin cooperates with the fourth internal thread through the fourth external thread to be connected to the third shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic structural diagram of an electric coffee bean grinder according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the exploded structure of an electric coffee bean grinder according to one embodiment of the utility model;

[0018] Figure 3 is a schematic diagram of the exploded structure of an electric coffee bean grinder according to an embodiment of the utility model from another perspective;

[0019] Figure 4 The figure is a schematic cross-sectional structure diagram of an electric coffee bean grinder according to an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] The first housing 1, the driving member 11, the bearing seat 12, the bearing 13, the connecting portion 14, the first external thread 141, the first internal thread 142, the second external thread 121, the motor 111, the battery 112, the circuit board 113, the first bearing 131, the second bearing 132, the limiting portion 15, the first channel 114, the second channel 122, and the connecting member 16;

[0022] A second housing 2, a second internal thread 21, and a third internal thread 22;

[0023] Inner grinding core 3, pressing portion 31, nut-shaped retaining spring 32;

[0024] External grinding core 4, bean guide 41;

[0025] Spindle 5, first stopper 51, second stopper 52, elastic member 53;

[0026] A third housing 6, a third external thread 61, a fourth internal thread 62, and a limiting ring 63;

[0027] Powder bin 7, fourth external thread 71. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The coffee bean grinder according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] like Figure 1-4 As shown, the electric coffee bean grinder provided in the embodiment of the utility model comprises a first housing 1 , a second housing 2 , an inner grinding core 3 , an outer grinding core 4 and a main shaft 5 .

[0033] Among them, a driving member 11 and a bearing seat 12 are arranged in the first shell 1, a bearing 13 is arranged in the bearing seat 12, and the first shell 1 forms a recessed connecting portion 14; the second shell 2 is sleeved on the connecting portion 14 of the first shell 1; the inner grinding core 3 is arranged in the outer grinding core 4, and there is a contact gap between the inner grinding core 3 and the outer grinding core 4; the main shaft 5 passes through the bearing 13, one end of the main shaft 5 is connected to the driving member 11, and the other end is connected to the inner grinding core 3. When the first shell 1 is rotated, the inner grinding core 3 is driven to move through the first shell 1 to adjust the contact gap between the inner grinding core 3 and the outer grinding core 4, and the main shaft 5 is driven by the driving member 11 to drive the inner grinding core 3 to rotate.

[0034] It should be noted that the ratio of the concave connecting portion 14 formed in the first shell 1 to the total length of the first shell is greater than two thirds.

[0035] That is to say, by artificially rotating the relative position between the first shell 1 and the second shell 2, the first shell 1 drives the main shaft 5, and the main shaft 5 drives the inner grinding core 3 to move up and down together, while the second shell 2 and the outer grinding core 4 remain stationary, thereby adjusting the contact gap between the inner grinding core 3 and the outer grinding core 4, thereby changing the coarseness of the ground powder, so as to grind the coffee beans into coffee powder of uniform coarseness.

[0036] In addition, the driving member 11 is connected to one end of the main shaft 5, and the other end of the main shaft 5 is connected to the inner grinding core 3, thereby, the main shaft 5 is driven to rotate by the driving member 11, and then the inner grinding core 3 is driven to rotate so that the inner grinding core 3 and the outer grinding core 4 interact with each other to grind the coffee beans into powder.

[0037] It should be noted that, through the mutual adjustment of the first shell 1 and the second shell 2, not only the concentricity is high, but also the contact gap between the inner grinding core 3 and the outer grinding core 4 can be adjusted from the outside. When the first shell 1 is rotated, the bearing seat 12 drives the main shaft 5 and the inner grinding core 3 to move up and down together. Furthermore, manual grinding is changed to automatic grinding, and the main shaft 5 is driven to rotate by the driving member 11, which improves the convenience of use.

[0038] As an embodiment, a first external thread 141 and a first internal thread 142 are provided on the connecting portion 14, a second internal thread 21 and a third internal thread 22 are provided on the second shell 2, the second shell 2 is connected to the first external thread 141 via the second internal thread 21, a second external thread 121 is provided on the bearing seat 12, and the bearing seat 12 is connected to the first internal thread 142 via the second external thread 121.

[0039] That is to say, the connecting portion 14 is connected to the second housing 2 and the bearing seat 12 through threads, so as to achieve transmission adjustment of the contact gap between the inner grinding core 3 and the outer grinding core 4 .

[0040] As an embodiment, a pressing portion 31 and a nut-shaped retaining spring 32 are provided below the inner grinding core 3 to limit the main shaft 5 .

[0041] It should be noted that the nut-shaped retaining spring 32 is engaged and fixed with the other end of the main shaft 5 , and the nut-shaped retaining spring 32 can be quickly removed by pressing the pressing portion 31 , thereby achieving quick disassembly.

[0042] As an embodiment, the driving member 11 is arranged above the bearing seat 12, and the driving member 11 includes a motor 111, a battery 112 and a circuit board 113. The battery 112 provides power for the driving member 11, the circuit board 113 controls the operation of the motor 111, and the motor 111 drives the main shaft 5 to drive the inner grinding core 3 to rotate.

[0043] In addition, the driving member 11 and the bearing seat 12 are connected via a connecting member 16 .

[0044] It should be noted that a driving switch is provided on the circuit board 113 , and the user presses the driving switch to make the motor 111 drive the spindle 5 to drive the inner grinding core 3 to rotate, thereby realizing the grinding function, which is convenient and simple to use.

[0045] As an embodiment, the bearing 13 includes a first bearing 131 and a second bearing 132 . A first stopper 51 is disposed above the first bearing 131 , and a second stopper 52 is disposed below the second bearing 132 .

[0046] That is, the main shaft 5 is supported for rotation by the first bearing 131 and the second bearing 132 , thereby reducing the friction coefficient of the main shaft 5 during movement and ensuring the rotation accuracy, and is fixed by the first stopper 51 and the second stopper 52 .

[0047] As an embodiment, an elastic member 53 sleeved on the main shaft 5 is provided between the bearing seat 12 and the inner grinding core 3 .

[0048] It should be noted that the elastic member 501 is a compression spring.

[0049] As an embodiment, a limiting portion 15 is further provided at the opening of the first shell 1 , and the driving member 11 is limited in the first shell 1 by the limiting portion 15 .

[0050] As an embodiment, an inclined bean guide member 41 is arranged between the bearing seat 12 and the outer grinding core 4, the driving member 11 has a first channel 114, the bearing seat 12 has a second channel 122, the first channel 114 and the second channel 122 are arranged opposite to each other, and a material bin is formed by the first channel 114, the second channel 122 and the bean guide member 41, and enters the contact gap between the inner grinding core 3 and the outer grinding core 4 under the guidance of the bean guide member 41.

[0051] It should be noted that the material bin is formed by the first channel 114 and the second channel 122, so that the material addition is convenient, and the bean guiding member 41 which is arranged obliquely is not prone to material jamming.

[0052] As an embodiment, the electric coffee bean grinder further includes a third shell 6, and a third external thread 61, a fourth internal thread 62 and a limiting ring 63 are provided on the outside of the third shell 6. The third shell 6 cooperates with the third internal thread 22 through the third external thread 61 to be connected to the second shell 2, and the outer grinding core 4 is limited by the limiting ring 63.

[0053] That is to say, the second shell 2 and the third shell 6 are connected via threads, and the outer grinding core 4 can be limited by the limiting ring 63 of the third shell 6 .

[0054] As an embodiment, the electric coffee bean grinder further includes a powder bin 7 , on which a fourth external thread 71 is provided. The powder bin 7 is matched with the fourth internal thread 62 via the fourth external thread 71 to be connected to the third housing 6 .

[0055] It should be noted that the powder bin 7 is used to receive ground coffee powder.

[0056] When it is necessary to grind coffee beans, the first shell 1 is first rotated to change the relative position between the first shell and the second shell 2, so that the first shell 1 is moved to a fixed position, that is, the first shell 1 drives the inner grinding core 3 to move through the bearing seat 12 and the main shaft 5, so as to adjust the contact gap between the inner grinding core 3 and the outer grinding core 4. After the adjustment is completed, the contact gap between the inner grinding core 3 and the outer grinding core 4 remains unchanged; then the coffee beans are put into the first channel 114, and fall into the contact gap between the inner grinding core 3 and the outer grinding core 4 through the second channel 122 and the bean guide 41. Finally, the driving switch is pressed to make the motor 111 drive the main shaft 5 to drive the inner grinding core 3 to rotate synchronously, so that the inner grinding core 3 and the outer grinding core 4 interact with each other to grind the coffee beans into powder. Since the gap between the inner grinding core 3 and the outer grinding core 4 remains unchanged, the ground coffee powder is of uniform coarseness. In the process of grinding, coffee beans can be added conveniently and in real time through the hopper, and the whole grinding process is simple and convenient to operate.

[0057] In summary, the electric coffee bean grinder proposed according to the embodiment of the utility model includes a first shell, a second shell, an inner grinding core, an outer grinding core and a main shaft; a driving member and a bearing seat are arranged in the first shell, a bearing is arranged in the bearing seat, and the first shell forms a recessed connecting portion; the second shell is sleeved on the connecting portion of the first shell; the inner grinding core is arranged in the outer grinding core, and there is a contact gap between the inner grinding core and the outer grinding core; the main shaft passes through the bearing, one end of the main shaft is connected to the driving member, and the other end is connected to the inner grinding core. When the first shell is rotated, the inner grinding core is driven to move through the first shell to adjust the contact gap between the inner grinding core and the outer grinding core, and the driving member drives the main shaft to drive the inner grinding core to rotate; thus, the first shell and the second shell are concentrically intersected with each other, so that the grinding accuracy is adjusted by external concentricity, and the grinding is electrically controlled at the same time, so that not only the grinding effect is good, but also the convenience of use is greatly improved.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An electric coffee bean grinder, characterized in that: include: A first housing, wherein a driving member and a bearing seat are disposed in the first housing, a bearing is disposed in the bearing seat, and the first housing forms a recessed connecting portion; A second shell, wherein the second shell is sleeved on the connecting portion of the first shell; An inner grinding core and an outer grinding core, wherein the inner grinding core is arranged inside the outer grinding core, and a contact gap is formed between the inner grinding core and the outer grinding core; A main shaft, wherein the main shaft passes through the bearing, one end of the main shaft is connected to the driving member, and the other end is connected to the inner grinding core. When the first shell is rotated, the inner grinding core is driven to move through the first shell to adjust the contact gap between the inner grinding core and the outer grinding core, and the main shaft is driven by the driving member to drive the inner grinding core to rotate.

2. The electric coffee bean grinder according to claim 1, characterized in that: The connecting portion is provided with a first external thread and a first internal thread, the second shell is provided with a second internal thread and a third internal thread, the second shell is connected to the first external thread via the second internal thread, the bearing seat is provided with a second external thread, and the bearing seat is connected to the first internal thread via the second external thread.

3. The electric coffee bean grinder according to claim 1, characterized in that: A pressing portion and a nut-shaped retaining spring are provided below the inner grinding core to limit the main shaft.

4. The electric coffee bean grinder according to claim 1, characterized in that: The driving member is arranged above the bearing seat, and the driving member includes a motor, a battery and a circuit board. The battery provides power for the driving member, the circuit board controls the operation of the motor, and the motor drives the main shaft to drive the inner grinding core to rotate.

5. The electric coffee bean grinder according to claim 1, characterized in that: The bearing comprises a first bearing and a second bearing, wherein a first stopper is arranged above the first bearing, and a second stopper is arranged below the second bearing.

6. The electric coffee bean grinder according to claim 1, characterized in that: An elastic member sleeved on the main shaft is arranged between the bearing seat and the inner grinding core.

7. The electric coffee bean grinder according to claim 1, characterized in that: A limiting portion is also provided at the opening of the first shell, and the driving member is limited in the first shell by the limiting portion.

8. The electric coffee bean grinder according to claim 1, characterized in that: An inclined bean guide member is arranged between the bearing seat and the outer grinding core, the driving member has a first channel, the bearing seat has a second channel, the first channel and the second channel are arranged opposite to each other, a material bin is formed by the first channel, the second channel and the bean guide member, and the beans enter the contact gap between the inner grinding core and the outer grinding core under the guidance of the bean guide member.

9. The electric coffee bean grinder according to claim 2, characterized in that: It also includes a third shell, which is provided with a third external thread, a fourth internal thread and a limiting ring. The third shell cooperates with the third internal thread through the third external thread to be connected to the second shell, and the external grinding core is limited by the limiting ring.

10. The electric coffee bean grinder according to claim 9, characterized in that: It also includes a powder bin, which is provided with a fourth external thread. The powder bin cooperates with the fourth internal thread through the fourth external thread to be connected to the third shell.

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