Powder delivery drive structure and coffee maker

CN224924931UActive Publication Date: 2026-11-03NINGBO HAOJIA ELECTRICAL APPLIANCES CO LTD
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Patent Information

Application Number
CN202522120983.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-01
Publication Date
2026-11-03
Estimated Expiration
2035-10-01

AI Technical Summary

Technical Problem

The traditional coffee machine's powder delivery structure lacks stability, affecting the delivery effect and reliability of coffee powder.

Method used

A powder conveying drive structure is designed, which forms a limiting space by setting limiting parts on the cover plate assembly and the support assembly, restricting the degree of freedom of the powder conveying assembly, so that it moves linearly in a preset direction, and integrates a drive assembly to ensure stability and accuracy.

Benefits of technology

It improves the smoothness and reliability of the powder conveying component, avoids coffee powder spillage and conveying interruption, and improves powder conveying efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of powder conveying driving structure and coffee machine, belong to coffee machine field, powder conveying driving structure includes: support component;Cover plate component, cover plate component is set on support component and cover plate component is located the side portion of support component;The side of cover plate component towards support component forms first limit part and second limit part;Or, the side of support component towards cover plate component forms first limit part and second limit part;Or, one of cover plate component and support component forms first limit part, another of cover plate component and support component forms second limit part;Powder conveying component, powder conveying component is set on cover plate component;Driving component, driving component is set on cover plate component, and driving component is transmission cooperation with powder conveying component.This application discloses the movement track of powder conveying component is strictly limited by the limit space formed between first limit part and second limit part, so that powder conveying component is along the preset direction stable linear motion.
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Description

Technical Field

[0001] This utility model relates to the field of coffee machines, and in particular to a powder feeding drive structure and a coffee machine. Background Technology

[0002] Coffee machines typically include a powder conveying structure that transfers coffee grounds from the grinder to the brewing unit. This conveying structure usually moves and connects with the grinder to deliver the coffee grounds; therefore, the stability of its movement directly affects the delivery of the coffee grounds. However, traditional coffee machine powder conveying structures suffer from insufficient stability, affecting the delivery of coffee grounds and resulting in poor reliability. Utility Model Content

[0003] Therefore, it is necessary to provide a powder conveying drive structure and coffee machine to address the problem that the insufficient mobility stability of the powder conveying structure of traditional coffee machines affects the delivery of coffee powder and results in poor reliability.

[0004] A powder conveying drive structure includes: a support assembly; a cover plate assembly disposed on the support assembly and located on the side of the support assembly; the cover plate assembly forming a first limiting portion and a second limiting portion on the side facing the support assembly; or, the support assembly forming a first limiting portion and a second limiting portion on the side facing the cover plate assembly; or, one of the cover plate assembly and the support assembly forming a first limiting portion, and the other of the cover plate assembly and the support assembly forming a second limiting portion; a limiting space formed between the first limiting portion and the second limiting portion; a powder conveying assembly disposed on the cover plate assembly and located in the limiting space; and a drive assembly disposed on the cover plate assembly, the drive assembly being in a driving engagement with the powder conveying assembly, the drive assembly being capable of driving the powder conveying assembly to move relative to the cover plate assembly in the limiting space.

[0005] The first aspect of this application discloses a powder conveying drive structure. A limiting space is formed by the arrangement of a first limiting part and a second limiting part. The first and second limiting parts work together to restrict the degrees of freedom of the powder conveying component, thus strictly limiting the movement trajectory of the powder conveying component. This allows the powder conveying component to move linearly along a preset direction, effectively suppressing phenomena such as shaking and deviation that occur during the movement of traditional powder conveying components. This design effectively improves the smoothness of the powder conveying component's movement while facilitating its sliding. It overcomes problems such as spillage, delivery interruption, or low efficiency caused by unstable movement of traditional powder conveying components, which may lead to misalignment with the coffee powder output position of the grinding component and the coffee powder input position of the brewing component. Therefore, this design improves the powder conveying effect of the powder conveying component. Moreover, the powder conveying component and the drive component are integrated into the same part. Compared to traditional technologies where they are located in multiple parts or multiple parts are set in the cover plate assembly, this design saves more materials. It should be understood that the first and second limiting parts can be simultaneously set on the cover plate assembly, simultaneously set on the support assembly, or separately set on the cover plate assembly and the support assembly.

[0006] In one embodiment, the cover plate assembly forms a first limiting portion and a second limiting portion on the side facing the support assembly. The first limiting portion is a rib, and the second limiting portion is a protrusion. Since both the first and second limiting portions are located on the side of the cover plate assembly facing the support assembly, the cover plate assembly integrates guiding and limiting functions, strictly limiting the movement trajectory of the powder conveying component and making its movement smoother. It should be understood that the first limiting portion can also be a protrusion and the second limiting portion a rib, or both the first and second limiting portions can be protrusions, or both can be ribs.

[0007] In one embodiment, the rib extends along the moving direction of the powder conveying assembly. By extending the rib along the moving direction of the powder conveying assembly, a longer, continuous, and stable path is provided, ensuring that the powder conveying assembly can perform smooth linear movement in a preset direction and effectively suppressing the shaking of the powder conveying assembly during movement.

[0008] In one embodiment, the number of protrusions is multiple, and the multiple protrusions are arranged sequentially along the moving direction of the powder conveying component. By sequentially arranging multiple protrusions along the moving direction of the powder conveying component, a linear multi-point constraint is formed, which enhances the rigid support of the powder conveying component throughout its stroke, effectively restricts the degree of freedom of the powder conveying component, enables the powder conveying component to achieve stable linear movement, and ensures the powder conveying effect.

[0009] In one embodiment, the cover assembly and the support assembly enclose a receiving cavity, the powder conveying assembly is located within the receiving cavity, and the drive assembly is at least partially located within the receiving cavity. The receiving cavity provides a physical barrier for the powder conveying assembly and the drive assembly, effectively preventing the intrusion of contaminants such as coffee powder, moisture, and dust.

[0010] In one embodiment, the powder conveying assembly includes a mating block, a movable plate, and a powder conveying component. The mating block is disposed on the cover plate assembly and located within the receiving cavity. The mating block is in a driving engagement with the drive assembly. The movable plate is connected to the mating block, and its opposite sides abut against the first limiting portion and the second limiting portion, respectively. The powder conveying component is disposed on the movable plate. The mating block, the movable plate, and the powder conveying component can move together relative to the support assembly under the control of the drive assembly. The mating block efficiently transmits power, enabling the movable plate to move. By abutting against the first and second limiting portions, the received power is converted into strictly restricted linear motion, increasing the contact area between the movable plate and the first limiting portion, as well as the contact point between the movable plate and the second limiting portion, ensuring the stability and accuracy of the powder conveying component during linear motion.

[0011] In one embodiment, a limiting plate is further included. The limiting plate is disposed on the cover plate assembly and located on the side of the cover plate assembly facing the support assembly. The support assembly has a groove on its side facing the cover plate assembly, and the limiting plate can engage with the groove. By engaging with the groove of the support assembly, the limiting plate can limit the position of the cover plate assembly and the support assembly during assembly, preventing the cover plate assembly from falling off. This design allows the cover plate assembly, drive assembly, and powder conveying assembly to be assembled first, and then assembled together onto the support assembly, making assembly very convenient.

[0012] In one embodiment, a clearance space is formed between the limiting plate and the cover plate assembly, allowing the powder conveying assembly to move into or exit the clearance space. The clearance space prevents obstruction of the powder conveying assembly's movement, ensuring that the travel of the powder conveying assembly is not affected by the limiting portion, thus maintaining the structural compactness.

[0013] In one embodiment, the system further includes a first micro switch and a second micro switch, both disposed on the cover plate assembly and located on the same side of the cover plate assembly. A contact rod is formed on the mating block, and when the mating block moves relative to the support assembly, the contact rod can abut against the first micro switch and the second micro switch respectively. A first fixing member and a second fixing member are formed on the cover plate assembly; the first fixing member is used to fix the first micro switch, and the second fixing member is used to fix the second micro switch. The contact rod allows for contact with the first and second micro switches respectively, providing a clear position signal to the control system. This enables precise start / stop or steering control of drive components such as motors, ensuring the integrity and repeatability of the powder conveying action and avoiding powder conveying failures due to inaccurate position sensing or mechanical malfunctions caused by excessive movement. The first and second fixing members securely fix the first and second micro switches, achieving stable signal triggering.

[0014] In one embodiment, the drive assembly includes a drive motor and a drive gear. The drive motor is mounted on the cover plate assembly, and the drive gear is mounted on the cover plate assembly and located within the receiving cavity. The drive gear is drive-connected to the drive motor and engages with the powder conveying assembly. Through the drive gear and drive motor connection, power is transmitted via gears, resulting in precise transmission ratios, high efficiency, and rapid response, ensuring accurate control of the powder conveying assembly's movement speed and position.

[0015] A coffee machine includes: the powder delivery drive structure described above.

[0016] The second aspect of this application discloses a coffee machine in which the powder conveying component of the powder conveying drive structure abuts against the first and second limiting parts respectively, which facilitates the sliding of the powder conveying component and makes the linear sliding of the powder conveying component have extremely high stability and accuracy, so that the powder conveying component can stably convey coffee powder and has good reliability. Attached Figure Description

[0017] Figure 1 A first perspective view of the powder conveying drive structure;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 A second perspective view of the powder conveying drive structure;

[0020] Figure 4 This is a cross-sectional view of the powder conveying drive structure;

[0021] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0022] Figure 6 This is the first exploded view of the powder transport drive structure;

[0023] Figure 7 for Figure 6 Enlarged view at point C;

[0024] Figure 8 This is the second exploded view of the powder transport driven structure;

[0025] Figure 9 This is the third exploded view of the powder transport driven structure;

[0026] Figure 10 This is the fourth exploded view of the powder transport driven structure;

[0027] Figure 11 A perspective view of the cover plate assembly, powder conveying assembly, drive assembly, and limiting plate;

[0028] Figure 12 for Figure 11 Enlarged view at point D;

[0029] Figure 13 A perspective view of the cover plate assembly, drive assembly, and limiting plate;

[0030] Figure 14 for Figure 13 Enlarged view at point E in the middle;

[0031] Figure 15 This is a 3D view of the powder delivery component.

[0032] The correspondence between the reference numerals and the component names is as follows:

[0033] 1. Support component; 101. Receiving cavity; 102. Groove.

[0034] 2. Cover plate assembly, 21. First limiting part, 22. Second limiting part, 23. First fixing part, 24. Second fixing part, 201. Limiting space, 202. Clearance space;

[0035] 3. Powder conveying assembly, 31. Matching block, 311. Contact rod, 32. Moving plate, 33. Powder conveying component;

[0036] 4 drive components, 41 drive motor, 42 drive gear;

[0037] 5 limit plates;

[0038] 61 First micro switch, 62 Second micro switch. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0041] Example 1

[0042] like Figure 1-15 As shown, this embodiment discloses a powder conveying drive structure, including: a support assembly 1; a cover plate assembly 2, wherein the cover plate assembly 2 is disposed on the support assembly 1 and is located on the side of the support assembly 1; the cover plate assembly 2 forms a first limiting part 21 and a second limiting part 22 on the side facing the support assembly 1; or, the support assembly 1 forms a first limiting part 21 and a second limiting part 22 on the side facing the cover plate assembly 2; or, one of the cover plate assembly 2 and the support assembly 1 forms a first limiting part 21, and the cover plate assembly... The first limiting part 21 and the second limiting part 22 form a second limiting part 22; a limiting space 201 is formed between the first limiting part 21 and the second limiting part 22; a powder conveying component 3 is disposed on the cover plate component 2 and is located in the limiting space 201; a driving component 4 is disposed on the cover plate component 2 and is in transmission cooperation with the powder conveying component 3, and the driving component 4 can drive the powder conveying component 3 to move relative to the cover plate component 2 in the limiting space 201.

[0043] The first aspect of this application discloses a powder conveying drive structure. A limiting space 201 is formed by the arrangement of a first limiting part 21 and a second limiting part 22. The first limiting part 21 and the second limiting part 22 work together to restrict the degrees of freedom of the powder conveying component 3, thus strictly limiting the movement trajectory of the powder conveying component 3. This allows the powder conveying component 3 to move linearly along a preset direction, effectively suppressing phenomena such as shaking and deviation that occur during the movement of traditional powder conveying components 3. This design effectively improves the smoothness of movement of the powder conveying component 3 while facilitating its sliding. It overcomes problems such as spillage, delivery interruption, or low efficiency caused by unstable movement of traditional powder conveying components, which may result in misalignment with the coffee powder output position of the grinding component and the coffee powder input position of the brewing component. Therefore, this design improves the powder conveying effect of the powder conveying component 3. Furthermore, the powder conveying component 3 and the drive component 4 are integrated into the same component. Compared to traditional technologies where they are located in multiple components or multiple components are set in the cover plate component 2, this design saves more materials. It should be understood that the first limiting part 21 and the second limiting part 22 can be provided on the cover plate assembly 2 at the same time, or on the support assembly 1 at the same time, or on the cover plate assembly 2 and the support assembly 1 respectively.

[0044] like Figure 6-7 and Figure 11-14 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the cover plate assembly 2 forms a first limiting part 21 and a second limiting part 22 on the side facing the support assembly 1, wherein the first limiting part 21 is a rib and the second limiting part 22 is a protrusion. Since both the first limiting part 21 and the second limiting part 22 are located on the side of the cover plate assembly 2 facing the support assembly 1, the cover plate assembly 2 integrates guiding and limiting functions, which can strictly limit the movement trajectory of the powder conveying assembly 3, making the movement of the powder conveying assembly 3 more stable. It should be understood that the first limiting part 21 can also be a protrusion and the second limiting part 22 can be a rib, or both the first limiting part 21 and the second limiting part 22 can be protrusions, or both the first limiting part 21 and the second limiting part 22 can be ribs.

[0045] like Figure 6-7 and Figure 11-14 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the rib extends along the moving direction of the powder conveying component 3. By extending the rib along the moving direction of the powder conveying component 3, the rib provides a longer, continuous, and stable path, ensuring that the powder conveying component 3 can perform smooth linear movement in a preset direction, effectively suppressing the shaking of the powder conveying component 3 during movement.

[0046] like Figure 6-7 and Figure 11-14As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of protrusions is multiple, and the multiple protrusions are arranged sequentially along the moving direction of the powder conveying component 3. By sequentially arranging multiple protrusions along the moving direction of the powder conveying component 3, a linear multi-point constraint is formed, which enhances the rigid support of the powder conveying component 3 throughout its stroke, effectively restricts the degree of freedom of the powder conveying component 3, and enables the powder conveying component 3 to stably achieve linear movement, ensuring the powder conveying effect.

[0047] like Figure 4 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the cover plate assembly 2 and the support assembly 1 enclose a receiving cavity 101, the powder conveying assembly 3 is located in the receiving cavity 101, and the drive assembly 4 is at least partially located within the receiving cavity 101. The configuration of the receiving cavity 101 provides a physical barrier for the powder conveying assembly 3 and the drive assembly 4, effectively preventing the intrusion of contaminants such as coffee powder, moisture, and dust.

[0048] like Figure 8-10 and Figure 15 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the powder conveying assembly 3 includes a mating block 31, a moving plate 32, and a powder conveying component 33. The mating block 31 is disposed on the cover plate assembly 2 and located within the receiving cavity 101. The mating block 31 is in transmission engagement with the driving assembly 4. The moving plate 32 is connected to the mating block 31. The opposite sides of the moving plate 32 abut against the first limiting part 21 and the second limiting part 22, respectively. The powder conveying component 33 is disposed on the moving plate 32. The mating block 31, the moving plate 32, and the powder conveying component 33 can move together relative to the supporting assembly 1 under the control of the driving assembly 4. The mating block 31 enables efficient power transmission, allowing the moving plate 32 to move. By having the moving plate 32 abut against the first limiting part 21 and the second limiting part 22 respectively, the received power is converted into strictly restricted linear motion, which increases the contact area between the moving plate 32 and the first limiting part 21 and the contact point between the moving plate 32 and the second limiting part 22, thus ensuring the stability and accuracy of the powder conveying component 33 during the linear motion process.

[0049] like Figure 4-5 and Figure 8-10As shown, in addition to the features of the above embodiments, this embodiment further includes a limiting plate 5, which is disposed on the cover plate assembly 2 and located on the side of the cover plate assembly 2 facing the support assembly 1. The support assembly 1 has a groove 102 on the side facing the cover plate assembly 2, and the limiting plate 5 can cooperate with the groove 102. By allowing the limiting plate 5 to cooperate with the groove 102 of the support assembly 1, the cover plate assembly 2 and the support assembly 1 can be limited during assembly, preventing the cover plate assembly 2 from falling off during assembly. This design allows the cover plate assembly 2, drive assembly 4, and powder conveying assembly 3 to be assembled first and then as a whole onto the support assembly 1, making assembly very convenient.

[0050] like Figure 4-5 , Figure 11 and Figure 13 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a clearance space 202 is formed between the limiting plate 5 and the cover plate assembly 2, and the powder conveying assembly 3 can move to the clearance space 202 or exit from the clearance space 202. The clearance space 202 avoids obstructing the movement of the powder conveying assembly 3, ensuring that the stroke of the powder conveying assembly 3 is not affected by the limiting portion, thus maintaining the compactness of the structure.

[0051] like Figure 1-2 As shown, in addition to the features of the above embodiments, this embodiment further includes: a first micro switch 61 and a second micro switch 62, both of which are disposed on the cover plate assembly 2 and located on the same side of the cover plate assembly 2. A contact rod 311 is formed on the mating block 31. When the mating block 31 moves relative to the support assembly 1, the contact rod 311 can abut against the first micro switch 61 and the second micro switch 62 respectively. A first fixing member 23 and a second fixing member 24 are formed on the cover plate assembly 2. The first fixing member 23 is used to fix the first micro switch 61, and the second fixing member 24 is used to fix the second micro switch 62. The contact rod 311 can contact the first micro switch 61 and the second micro switch 62 respectively, providing a clear position signal to the control system, thereby realizing precise start-stop or steering control of the drive component 4, such as the motor, ensuring the integrity and repeatability of the powder conveying action, and avoiding powder conveying failure or mechanical failure caused by excessive movement due to inaccurate position perception. The first fixing member 23 and the second fixing member 24 are used to securely fix the first micro switch 61 and the second micro switch 62, thereby achieving stable signal triggering.

[0052] like Figure 8As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the driving component 4 includes a driving motor 41 and a driving gear 42. The driving motor 41 is disposed on the cover plate component 2, and the driving gear 42 is disposed on the cover plate component 2 and located within the receiving cavity 101. The driving gear 42 is drive-connected to the driving motor 41, and the driving gear 42 is drive-fitted to the powder conveying component 3. Through the drive gear 42 and the driving motor 41, power is transmitted via gears, which features precise transmission ratio, high efficiency, and rapid response, ensuring precise control of the moving speed and position of the powder conveying component 3.

[0053] Example 2

[0054] This embodiment discloses a coffee machine, including the above-described powder delivery drive structure.

[0055] The second aspect of this application discloses a coffee machine in which the powder conveying component 3 of the powder conveying drive structure abuts against the first limiting part 21 and the second limiting part 22 respectively, which facilitates the sliding of the powder conveying component 3 and makes the linear sliding of the powder conveying component 3 have extremely high stability and accuracy, so that the powder conveying component 3 can stably convey coffee powder and has good reliability.

[0056] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A powder conveying drive structure, characterized in that, include: Support component (1); Cover plate assembly (2), the cover plate assembly (2) is disposed on the support assembly (1) and the cover plate assembly (2) is located on the side of the support assembly (1); The cover plate assembly (2) forms a first limiting portion (21) and a second limiting portion (22) on the side facing the support assembly (1); or, the support assembly (1) forms a first limiting portion (21) and a second limiting portion (22) on the side facing the cover plate assembly (2); or, one of the cover plate assembly (2) and the support assembly (1) forms a first limiting portion (21), and the other of the cover plate assembly (2) and the support assembly (1) forms a second limiting portion (22). A limiting space (201) is formed between the first limiting part (21) and the second limiting part (22); A powder conveying assembly (3) is disposed on the cover plate assembly (2) and is located in the limiting space (201); A drive assembly (4) is disposed on the cover plate assembly (2). The drive assembly (4) is in transmission cooperation with the powder conveying assembly (3). The drive assembly (4) can drive the powder conveying assembly (3) to move relative to the cover plate assembly (2) in the limiting space (201).

2. The powder conveying drive structure according to claim 1, characterized in that, The cover plate assembly (2) has a first limiting part (21) and a second limiting part (22) formed on the side facing the support assembly (1). The first limiting part (21) is a rib and the second limiting part (22) is a protrusion.

3. The powder conveying drive structure according to claim 2, characterized in that, The rib extends along the moving direction of the powder conveying assembly (3); And / or the number of the bumps is multiple, and the multiple bumps are arranged sequentially along the moving direction of the powder conveying assembly (3).

4. The powder conveying drive structure according to claim 1, characterized in that, The cover plate assembly (2) and the support assembly (1) enclose a receiving cavity (101), the powder conveying assembly (3) is located in the receiving cavity (101), and the drive assembly (4) is at least partially located in the receiving cavity (101).

5. The powder conveying drive structure according to claim 4, characterized in that, The powder conveying assembly (3) includes a mating block (31), a moving plate (32), and a powder conveying component (33). The mating block (31) is disposed on the cover plate assembly (2) and located in the receiving cavity (101). The mating block (31) is in transmission engagement with the driving assembly (4). The moving plate (32) is connected to the mating block (31). The opposite sides of the moving plate (32) abut against the first limiting part (21) and the second limiting part (22) respectively. The powder conveying component (33) is disposed on the moving plate (32). The mating block (31), the moving plate (32), and the powder conveying component (33) can move together relative to the support assembly (1) under the control of the driving assembly (4).

6. The powder conveying drive structure according to claim 1, characterized in that, It also includes a limiting plate (5), which is disposed on the cover plate assembly (2) and the limiting plate (5) is located on the side of the cover plate assembly (2) facing the support assembly (1). The support assembly (1) has a groove (102) on the side facing the cover plate assembly (2), and the limiting plate (5) can cooperate with the groove (102).

7. The powder conveying drive structure according to claim 6, characterized in that, A clearance space (202) is formed between the limiting plate (5) and the cover plate assembly (2), and the powder conveying assembly (3) can move to the clearance space (202) or exit from the clearance space (202).

8. The powder conveying drive structure according to claim 5, characterized in that, It also includes a first micro switch (61) and a second micro switch (62), both of which are disposed on the cover plate assembly (2) and located on the same side of the cover plate assembly (2). A contact rod (311) is formed on the mating block (31). When the mating block (31) moves relative to the support assembly (1), the contact rod (311) can abut against the first micro switch (61) and the second micro switch (62) respectively. A first fixing member (23) and a second fixing member (24) are formed on the cover plate assembly (2). The first fixing member (23) is used to fix the first micro switch (61), and the second fixing member (24) is used to fix the second micro switch (62).

9. The powder conveying drive structure according to claim 4, characterized in that, The drive assembly (4) includes a drive motor (41) and a drive gear (42). The drive motor (41) is mounted on the cover plate assembly (2), and the drive gear (42) is mounted on the cover plate assembly (2) and located in the receiving cavity (101). The drive gear (42) is in transmission cooperation with the powder conveying assembly (3).

10. A coffee machine, characterized in that, include: The powder delivery drive structure as described in any one of claims 1-9.