Coffee machine and powder door device thereof

Abstract

The utility model relates to the technical field of coffee machines, and provides a powder door device of a coffee machine and the coffee machine, and the powder door device comprises a powder falling assembly, a powder feeding assembly and a powder discharging assembly, the driving structure is connected with the powder door and is used for driving the powder door to close or open the powder falling opening; the powder door is used for closing or opening the powder falling opening; the spraying mechanism is used for spraying hot water to brew coffee; and the driving structure can simultaneously drive the spraying mechanism and the powder door. The powder door device is simple in structure, one driving structure can drive the spraying mechanism and the powder door at the same time and control closing and opening of the powder door and spraying and brewing of coffee at the same time, production cost is low, the using process is simple, operation is easy, the coffee powder door is closed and opened, and the effects of sealing water vapor and fully spraying and brewing are achieved; therefore, efficient closing and opening and high-quality sealed brewing of the powder door of the coffee machine are achieved through simple operation, the use efficiency of the motor of the coffee machine is improved, the cost is saved, and then the brewing efficiency and quality of coffee are improved.

Description

Technical Field

[0001] The present application relates to the technical field of coffee machines, and in particular to a powder door device of a coffee machine and a coffee machine. Background Art

[0002] A coffee machine is a commonly used household appliance for brewing coffee. In the coffee machine, coffee beans are ground into coffee powder, which then enters a brewing chamber through a powder dropping mechanism for brewing.

[0003] In the related art, the powder dropping structure is equipped with a powder dropping port, a powder door, a sliding module and a driving mechanism. The driving mechanism drives the sliding module to move to close or open the powder inlet, and the coffee powder enters the brewing chamber through the powder dropping port, resulting in a fixed powder dropping position in the brewing chamber. During the brewing process, the position where the external hot water enters the brewing chamber is also fixed. To solve this problem and realize the rotary spraying of the brewing chamber, another driving mechanism such as a motor is also required to drive the rotary spraying of hot water to brew coffee. However, the structure of the related art is complex and requires two driving motors, which is costly to implement, making it unsuitable for large-scale mass production in the market or the high cost leads to high prices and poor sales after mass production. Utility Model Content

[0004] The present application provides a powder door device for a coffee machine and a coffee machine. The powder door device can achieve efficient opening and closing of the powder door of the coffee machine and high-quality sealed coffee brewing with simple operation, thereby saving costs.

[0005] In a first aspect, the present application provides a coffee machine powder door device that adopts the following technical solution:

[0006] A powder door device for a coffee machine, the powder door device comprising:

[0007] A powder dropping component is provided with a powder dropping port;

[0008] A driving structure connected to the powder door for driving the powder door to close or open the powder outlet, and connected to the spraying mechanism for driving the spraying mechanism;

[0009] A powder door, used to close or open the powder outlet;

[0010] A spray mechanism, used for rotating and spraying hot water to brew coffee;

[0011] The driving structure is used to drive the spray mechanism and the powder door; the driving structure includes a driving motor, a driving connector and a powder dropping rocker arm;

[0012] The powder dropping rocker arm is connected to the powder door and is used to drive the powder door to open or close.

[0013] The driving connection member is equipped with a powder gate gear, the driving motor is connected to the powder gate gear, and a limited driving groove is provided at the end of the powder gate gear facing the powder dropping rocker arm. The driving connection member also includes an upper toggle plate connected to the powder gate gear and a lower toggle plate fixedly connected to the powder dropping rocker arm. The upper toggle plate and the lower toggle plate are both located inside the powder gate gear. The driving motor drives the powder gate to move through the upper toggle plate and the lower toggle plate.

[0014] The upper dial plate is connected to a synchronous limiting structure, and abuts against the lower dial plate under the limiting force of the synchronous limiting structure to drive the lower dial plate and the upper dial plate to rotate synchronously. Under normal circumstances, the upper dial plate drives the lower dial plate to rotate synchronously under the action of the synchronous limiting structure, and when the driving motor is running forward, it can overcome the limiting force of the synchronous limiting structure after closing the powder drop port and drive the upper dial plate to rotate relative to the lower dial plate, and the powder door gear can drive the spray mechanism to rotate and spray hot water.

[0015] Furthermore, the synchronous limiting structure is provided with a powder gate spring, and the upper toggle plate abuts against the lower toggle plate under the action of the powder gate spring. A toggle boss is also provided at the bottom of the upper toggle plate, and the surface of the lower toggle plate facing the driving connecting part is provided with a toggle slot that cooperates with the toggle boss of the upper toggle plate, and the lower end of the toggle boss is provided with a guide inclined surface that cooperates with the toggle slot.

[0016] Furthermore, the upper toggle plate is provided with a guide rib, the powder door gear is provided with a limit groove, the guide rib cooperates with the limit groove, and the upper toggle plate moves up and down along the limit groove.

[0017] Furthermore, the upper toggle plate is provided with an annular groove, and the bottom of the powder door spring is in the annular groove of the upper toggle plate.

[0018] Furthermore, the upper dial plate, the lower dial plate, and the powder gate gear rotate coaxially, and the powder gate gear drives the spray mechanism to rotate at the same time.

[0019] Furthermore, the powder dropping rocker arm extends toward the powder door to form a driving arm, the driving arm is provided with a waist-shaped hole, the powder door is provided with a round hole, the pin passes through the waist-shaped hole and the round hole of the powder door respectively, and the waist-shaped hole makes way for the pin during the rotation of the powder dropping rocker arm.

[0020] Furthermore, the powder dropping assembly is provided with a powder dropping bracket, and the sliding groove where the powder door slides is formed by two slide groove accessories and the powder dropping bracket. The opposite sides of the two slide groove accessories are provided with stepped slide groove frames. When the two slide groove accessories are fixedly connected to the powder dropping bracket, the sliding groove required for the powder door to slide is formed between the two slide groove frames and the outer side wall of the bottom of the powder dropping bracket.

[0021] In a second aspect, the present application provides a coffee machine that adopts the following technical solution:

[0022] A coffee machine is provided with the powder door device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The drive structure can drive the spray mechanism and the powder door at the same time, reducing the number of drive motors configured in the coffee machine, thereby saving space and production costs.

[0025] 2. When the driving motor rotates forward, the lower toggle plate is driven to rotate by the toggle boss and the toggle slot, and the lower toggle plate drives the powder dropping rocker arm to rotate to drive the powder door to close the powder dropping port; when the powder dropping port is closed, the driving motor continues to rotate forward, and the powder dropping rocker arm no longer rotates, that is, the lower toggle plate no longer rotates, and the toggle boss overcomes the elastic force of the powder door spring and slides along the limit groove away from the lower toggle plate under the action of the guide inclined surface and the toggle slot; when the driving motor is reversed, the lower toggle plate is driven to rotate by the toggle boss and the toggle slot, and the lower toggle plate drives the powder dropping rocker arm to rotate to drive the powder door to open the powder dropping port.

[0026] 3. The powder door gear can drive the spray mechanism to rotate and spray hot water, thereby fully brewing the coffee powder.

[0027] 4. The toggle boss and the toggle slot cooperate to enhance the connection stability between the upper toggle plate and the lower toggle plate.

[0028] 5. The setting of the guide ribs and the limit grooves enables the upper dial to move up and down along the limit grooves. During use, the upper and lower dials are embedded in the powder door gear, and the space occupancy rate is reduced.

[0029] 6. The powder door spring plays a limiting role in the ring groove of the upper toggle plate.

[0030] 7. The powder door device has a simple structure. The powder door and the rotary spray drive are both completed by a synchronous motor, which reduces the number of drive motors configured in the coffee machine, thereby saving space and production costs. The coffee powder door can be closed and opened with simple operations, which plays the role of sealing water vapor and fully spraying and brewing. It achieves efficient closing and opening of the powder door and high-quality sealing and full brewing, improves the utilization efficiency of the coffee machine's motor, and thus improves the brewing efficiency and quality of coffee.

[0031] 8. During the rotation of the powder dropping rocker arm, the waist-shaped hole makes way for the pin to realize the control of the powder door by the rotation of the powder dropping rocker arm.

[0032] 9. The setting of the slide groove accessories and the slide groove frame forms a sliding groove required for the powder door to slide between the slide groove frame and the outer side wall of the bottom of the powder dropping bracket, which restricts the powder door so that it moves in the sliding groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall explosion structure of the powder door device described in the embodiment of the present application.

[0034] Figure 2 The embodiment of the present application is a schematic diagram of the opening of the powder drop port.

[0035] Figure 3 This is an overall cross-sectional view of the powder door device described in the embodiment of the present application.

[0036] Figure 4 This is a schematic diagram of the drive motor structure described in an embodiment of the present application.

[0037] Figure 5 This is a cross-sectional view of the synchronous motor joint structure described in an embodiment of the present application.

[0038] Figure 6 This is a schematic diagram of the top structure of the powder door gear described in an embodiment of the present application.

[0039] Figure 7 This is a schematic diagram of the bottom structure of the powder door gear described in an embodiment of the present application.

[0040] Figure 8 This is a schematic diagram of the top structure of the upper dial described in an embodiment of the present application.

[0041] Figure 9 This is a schematic diagram of the bottom structure of the upper dial described in an embodiment of the present application.

[0042] Figure 10 This is a schematic diagram of the top structure of the lower dial described in an embodiment of the present application.

[0043] Figure 11 This is a schematic diagram of the top structure of the lower dial described in an embodiment of the present application.

[0044] Figure 12 It is a structural schematic diagram of the powder dropping rocker arm described in an embodiment of the present application.

[0045] Figure 13 It is a schematic structural diagram of the pin described in the embodiment of the present application.

[0046] Figure 14 It is a structural schematic diagram of the powder door described in the embodiment of the present application.

[0047] Figure 15 This is a closed schematic diagram of the powder outlet described in the embodiment of the present application.

[0048] Figure 16 It is a schematic diagram of the explosion structure of the chute accessory described in the embodiment of the present application.

[0049] Figure 17 This is a schematic diagram of the touch switch described in an embodiment of the present application.

[0050] Explanation of reference numerals: 1, powder dropping assembly; 20, powder door; 300, powder dropping port; 3, driving structure; 33, driving connector; 12, driving motor; 13, powder door gear; 14, powder door spring; 17, powder dropping rocker arm; 11, synchronous motor connector; 15, upper dial; 16, lower dial; 121, elliptical axis; 122, hole; 111, first center hole; 112, limiting hole; 113, circular boss; 131, center column; 132, limiting groove; 133, third center hole; 134, third positioning column; 135, cylinder; 136, limiting driving groove; 151, fifth center hole; 15 2. Annular groove; 153. Guide rib; 154. Toggle boss; 161. Sixth positioning column; 162. Sixth center hole; 163. Step hole; 164. Toggle slot; 172. Waist-shaped hole; 173. Seventh center hole; 174. Positioning hole; 19. Pin; 201. Round hole; 202. Surface; 18. Powder drop bracket; 181. Fixing column; 182. First mounting hole; 22. Touch switch; 200. Contact; 400. Second mounting hole; 21. Slideway accessory; 61. Slideway frame; 30. Synchronous limit structure; 2. Spray mechanism; 201. Spray trough; 202. Spray showerhead. DETAILED DESCRIPTION

[0051] The following is combined with Figures 1-17 This application is described in further detail.

[0052] Reference Figure 1 and Figure 2 The present application provides a powder door device for a coffee machine, comprising a driving structure 3, a powder door 20, a powder dropping assembly 1, and a spraying mechanism 2. The powder dropping assembly 1 is provided with a powder dropping port 300 that cooperates with the powder door 20. The driving structure 3 is connected to the powder door 20 and is used to drive the powder door 20 to close or open the powder dropping port 300. The driving structure 3 is connected to the spraying mechanism 2 and is used to drive the spraying mechanism 2.

[0053] A powder door 20 is used to close or open the powder outlet 300;

[0054] Spraying mechanism 2, used for rotating and spraying hot water to brew coffee;

[0055] The driving structure 3 is used to drive the spray mechanism 2 and the powder door 20. The number of driving motors configured in the coffee machine is reduced, thereby saving space and production costs.

[0056] The driving structure 3 is specifically as follows: the driving structure 3 includes a driving motor 12 , a powder dropping rocker arm 17 and a driving connector 33 .

[0057] The powder dropping rocker arm 17 is connected to the powder door 20 and is used to drive the powder door 20 to open or close.

[0058] The driving connection member 33 connects the driving motor 12 and the powder dropping rocker arm 17, and rotates under the driving of the driving motor 12 to drive the powder dropping rocker arm (17) to rotate the powder door (20) relative to the powder dropping port (300).

[0059] Reference Figure 1 、 Figure 4 and Figure 5 The driving motor 12 is fixedly connected to the powder dropping component 1 through the hole 122. The driving motor 12 is provided with a synchronous motor connector 11. The driving motor 12 is cylindrical as a whole, and a connecting groove is provided at the bottom to be fixedly connected to the synchronous motor connector 11. A first center hole 111 is provided at the top of the synchronous motor connector 11 to cooperate with the elliptical axis 121 of the driving motor 12. A circular boss 113 is provided at the bottom of the synchronous motor connector 11, and a limiting hole 112 is provided at the bottom of the circular boss 113.

[0060] Reference Figure 6 and Figure 7 A third positioning column 134 is provided on the top of the drive connector 33 and is fixedly connected to the limiting hole 112 of the drive motor 12. The drive connector 33 is cylindrical in shape as a whole. A cylinder 135 is provided on the upper half of the drive connector 33. The third positioning column 134 is provided on the top of the cylinder 135. A third center hole 133 is provided at the top center of the cylinder 135. The third center hole 133 cooperates with the first center hole 111 of the synchronous motor connector 11. The bottom outer wall of the drive connector 33 is provided with a circular powder gate gear 13. A limiting drive groove 136 is provided in the powder gate gear 13. A center column 131 is provided in the middle of the limiting drive groove 136, and a limiting groove 132 is provided around the center column 131.

[0061] Reference Figure 8 and Figure 9 The drive connector 33 also includes an upper toggle plate 15, which is disposed in the limit drive groove 136 of the powder gate gear 13. The upper toggle plate 15 is generally annular and has a fifth central hole 151. A ring groove 152 is provided at the top of the upper toggle plate 15. The ring groove 152 is used to accommodate the powder gate spring 14. A guide rib 153 is provided in the fifth central hole 151. The guide rib 153 cooperates with the limit groove 132. A toggle boss 154 is also provided at the bottom of the upper toggle plate 15. The provision of the guide rib 153 and the limit groove 132 allows the upper toggle plate 15 to move up and down along the limit groove 132. During use, the upper toggle plate 15 is embedded in the powder gate gear 13, thereby reducing space occupancy.

[0062] The synchronous limiting structure 30 is equipped with a powder gate spring 14, which is arranged in the limiting driving groove 136 of the powder gate gear 13. The bottom of the powder gate spring 14 is located in the annular groove 152 of the upper toggle plate 15, and the powder gate spring 14 plays a limiting role in the annular groove 152 of the upper toggle plate 15.

[0063] Reference Figure 10 and Figure 11 The drive connector 33 also includes a lower dial plate 16, which is disposed in the limited drive slot 136 of the powder gate gear 13. The lower dial plate 16 is fixedly connected to the powder dropping rocker arm 17. A dial slot 164 is provided at the top of the lower dial plate 16. The lower end of the dial boss 154 is provided with a guide slope that cooperates with the dial slot 164. The dial slot 164 and the dial boss 154 are engaged. The dial boss 154 cooperates with the dial slot 164 to enhance the connection stability between the upper and lower dial plates. The lower dial plate 16 is generally annular in shape. A stepped hole 163 is provided in the middle of the lower dial plate 16, a sixth center hole 162 is provided at the bottom of the lower dial plate 16, and a sixth positioning column 161 is also provided at the bottom of the lower dial plate 16. During use, the lower dial plate 16 is embedded in the powder gate gear 13, reducing space occupancy.

[0064] Reference Figure 7 、 Figure 10 、 Figure 11 and Figure 12 The center column 131 of the powder gate gear 13 is fixedly connected to the lower dial plate 16 and the rocker arm 17 through the stepped hole 163, the sixth center hole 162, and the seventh center hole 173 of the powder dropping rocker arm 17. The rocker arm 17 is provided with a positioning hole 174 that cooperates with the sixth positioning column 161. The powder dropping rocker arm 17 extends toward the powder gate 20 to form a drive arm. The drive arm is provided with a waist-shaped hole 172. The pin 19 passes through the waist-shaped hole 172 and the circular hole 201 of the powder gate 20 respectively. During the rotation of the powder dropping rocker arm 17, the waist-shaped hole 172 makes way for the pin 19, thereby realizing the control of the powder gate 20 by the rotation of the powder dropping rocker arm 17.

[0065] Reference Figure 13 and Figure 14 The powder door 20 is provided with a surface 202 , on which a circular hole 201 is provided. The circular hole 201 is fixedly connected to the rocker arm 17 via a pin 19 .

[0066] In a preferred example, the

[0067] There are two limiting holes 112 and two third positioning columns 134;

[0068] There are two limiting grooves 132 and two guide ribs 153;

[0069] There are six shifting bosses 154 and six shifting slots 164.

[0070] There are four sixth positioning posts 161 and four positioning holes 174 .

[0071] When the driving motor 12 is in operation, it drives the driving connector 33 to rotate, thereby driving the powder door 20 to move through the rocker arm 17 to achieve the closing or opening of the powder inlet 30.

[0072] In the initial state, the six toggle bosses 154 are respectively located in the six toggle slots 164 , and the lower ends of the toggle bosses 154 are provided with guiding inclined surfaces that cooperate with the toggle slots 164 . When the drive motor 12 rotates forward, the toggle boss 154 first abuts the toggle slot 164 through the guide inclined surface, and then drives the lower toggle plate 16 and the powder dropping rocker arm 17 to rotate, thereby driving the powder door 20 to move to close the powder dropping port 300. When the powder dropping port 300 is closed, the drive motor 12 continues to rotate forward. At this time, the powder dropping rocker arm 17 is stationary relative to the powder dropping port 300 and cannot continue to rotate with the drive motor 12. The upper toggle plate 15 overcomes the elastic force of the powder door spring 14 under the guiding action of the guide inclined surface and slides upward relative to the limit groove 132, so that the toggle boss 154 disengages from the toggle slot 164 and continues, and then drives the connecting member 33 to continue to rotate with the drive motor 12; when the drive motor 12 is reversed, the drive motor 12 drives the powder dropping rocker arm 17 to rotate through the toggle boss 154 and the toggle slot 164, thereby driving the powder door 20 to open the powder dropping port 300.

[0073] Reference Figure 1 、 Figure 15 and Figure 16 The powder dropping assembly 1 is provided with a powder dropping bracket 18, and the powder dropping bracket 18 is equipped with a fixing column 181 and a first mounting hole 182. The fixing column 181 cooperates with the hole 122 of the motor 12, and the powder dropping assembly 1 and the motor 12 are fixedly connected. The sliding groove where the powder door 20 slides is formed by two slide groove accessories 21 that cooperate with the powder dropping bracket 18. The slide groove accessories 21 are fixedly connected to the second mounting hole 400 of the powder dropping bracket 18 by screws. The opposite sides of the two slide groove accessories 21 are provided with a stepped slide groove frame 61. When the two slide groove accessories 21 are fixedly connected to the powder dropping bracket 18, the sliding groove required for the powder door 20 to slide is formed between the two slide groove frames 61 and the outer side wall of the bottom of the powder dropping bracket 18.

[0074] Furthermore, the powder drop opening 300 is extended downward to form a closed frame. The distance between the bottom of the closed frame and the chute frame 61 is adapted to the thickness of the powder door 20, so that when the powder door 20 slides to the powder drop opening 300, it can close the powder drop opening 300. The arrangement of the chute accessory 21 and the chute frame 61 forms a sliding groove for the powder door 20 to slide between the chute frame 21 and the outer side wall of the bottom of the powder drop bracket 18, restricting the powder door 20 so that it can move within the sliding groove.

[0075] Reference Figure 11The powder dropping bracket 18 is also provided with a touch switch 22, and the pin 19 is provided with a contact 200. When the powder door 20 is opened, the touch switch 22 senses the contact 200, and the system knows that the powder door 20 has been opened, and controls the drive motor 12 to stop rotating.

[0076] Reference Figure 3 The spray mechanism 2 includes an annular spray trough 201 disposed on the powder drop bracket 18 and a spray head 202 cooperating with the spray trough 201. The notch of the spray trough 201 faces downward, and a water inlet pipe is connected to the top of the spray trough 201. The spray head 202 is annular and encloses the spray trough 201 to form a spray water chamber. The spray head 202 is slidably connected to the spray trough 201, that is, the spray head 202 rotates relative to the powder drop bracket 18 through the spray trough 201. External hot water enters the spray water chamber through the water inlet pipe and then enters the brewing chamber of the coffee machine from the spray water chamber. The rotation of the spray head 202 realizes the rotational spraying of the coffee powder in the brewing chamber. The powder drop bracket 18 is fixedly connected to the drive motor 12. The powder gate gear 13 can drive the spray mechanism 2 to rotate and spray hot water, thereby fully brewing the coffee powder.

[0077] In another preferred embodiment, the present application also provides a coffee machine, in which the powder door device is configured.

[0078] By adopting the above technical solution, the working principle of the powder door device is as follows: the powder door spring 14 is arranged in the limit drive groove 136 of the powder door gear 13, the powder door spring 14 is located on the annular groove 152 of the upper toggle plate 15, the upper toggle plate 15 is arranged in the limit drive groove 136 of the powder door gear 13, the guide rib 153 cooperates with the limit groove 132, the upper toggle plate 15 moves up and down along the limit groove 132, the lower toggle plate 16 and the rocker arm 17 are installed on the powder door gear 13, ensuring that the seventh center hole 173, the sixth center hole 162, the step hole 163 and the center column 131 are aligned and fixed.

[0079] During the installation process of the powder door device, the powder door spring 14 is installed into the limit driving groove 136 of the powder door gear 13, and then the upper toggle plate 15 is put into the limit groove 132 of the powder door gear 13, and then the lower toggle plate 16 is installed on the powder door gear 13 to ensure that the upper toggle plate 15 is engaged with the lower toggle plate 16, and then the rocker arm 17 is installed on the sixth positioning column 161 of the lower toggle plate 16 to ensure that it is locked. The upper toggle plate 15 can move up and down by the elastic force of the powder door spring 14, and the rocker arm 17 can realize a certain stroke of back and forth operation under the drive of the lower toggle plate 16, so that the powder door 20 is closed and opened.

[0080] When the drive motor 12 rotates forward, the lower toggle plate 16 is driven to rotate by the toggle boss 154 and the toggle slot 164, and the lower toggle plate 16 drives the powder dropping rocker arm 17 to rotate to drive the powder door 20 to close the powder dropping port 300; when the powder dropping port 300 is closed, the drive motor 12 continues to rotate forward, and at this time the powder dropping rocker arm 17 no longer rotates, that is, the lower toggle plate 16 no longer rotates, then the toggle boss 154 overcomes the elastic force of the powder door spring 14 under the action of the guide slope and the toggle slot 164 and slides along the limit groove away from the lower toggle plate 16; when the drive motor 12 is reversed, the lower toggle plate 16 is driven to rotate by the toggle boss 154 and the toggle slot 164, and the lower toggle plate 16 drives the powder dropping rocker arm 17 to rotate to drive the powder door 20 to open the powder dropping port 300. At the same time, the driving motor 12 rotates to drive the powder gate gear 13 to rotate, and the powder gate gear 13 can drive the spray shower 202 of the spray mechanism 2 to rotate and spray hot water, thereby fully brewing the coffee powder.

[0081] The powder door gear 13 drives the spray shower 202 of the spray mechanism 2, and the powder falling rocker arm 17 can drive the powder door 20. The drive of the powder door 20 and the drive of the rotary spray are both completed by a synchronous motor. One motor completes the drive that originally required two motors, reducing the number of drive motors configured in the coffee machine, thereby saving space and production costs. The coffee powder door can be closed and opened with simple operations, which plays the role of sealing water vapor and fully spraying and brewing, achieving efficient closing and opening of the powder door and high-quality sealing and sufficient brewing, improving the utilization efficiency of the coffee machine's motor, and thus improving the brewing efficiency and quality of coffee.

[0082] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A powder door device for a coffee machine, characterized in that: The powder door device comprises: A powder dropping component (1), wherein the powder dropping component (1) is provided with a powder dropping port (300); A driving structure (3) is connected to the powder door (20) and is used to drive the powder door (20) to close or open the powder drop opening (300), and is connected to the spraying mechanism (2) and is used to drive the spraying mechanism (2); A powder door (20) for closing or opening the powder outlet (300); A spraying mechanism (2) for rotating and spraying hot water to brew coffee; The driving structure (3) is used to drive the spraying mechanism (2) and the powder door (20), and the driving structure (3) includes a driving motor (12), a driving connector (33) and a powder dropping rocker arm (17); The powder dropping rocker arm (17) is connected to the powder door (20) and is used to drive the powder door (20) to open or close; The driving connecting member (33) is provided with a powder gate gear (13), the driving motor (12) is connected to the powder gate gear (13), and a limited driving limit driving groove (136) is provided at the end of the powder gate gear (13) facing the powder dropping rocker arm (17). The driving connecting member (33) further comprises an upper toggle plate (15) connected to the powder gate gear (13) and a lower toggle plate (16) fixedly connected to the powder dropping rocker arm (17). Both the upper toggle plate (15) and the lower toggle plate (16) are located in the powder gate gear (13), and the driving motor (12) drives the powder gate (20) to move via the upper toggle plate (15) and the lower toggle plate (16); The upper dial plate (15) is connected to a synchronous limiting structure (30) and abuts against the lower dial plate (16) under the limiting force of the synchronous limiting structure (30) to drive the lower dial plate (16) and the upper dial plate (15) to rotate synchronously. Under normal conditions, the upper dial plate (15) drives the lower dial plate (16) to rotate synchronously under the action of the synchronous limiting structure (30). When the driving motor (12) is running in the forward direction, the upper dial plate (15) can overcome the limiting force of the synchronous limiting structure (30) after closing the powder drop port (300) and drive the upper dial plate (15) to rotate relative to the lower dial plate (16). The powder door gear (13) can drive the spray mechanism (2) to rotate and spray hot water.

2. The powder door device of a coffee machine according to claim 1, characterized in that: The synchronous limiting structure (30) is provided with a powder gate spring (14), and the upper toggle plate (15) abuts against the lower toggle plate (16) under the action of the powder gate spring (14). The bottom of the upper toggle plate (15) is also provided with a toggle boss (154), and the surface of the lower toggle plate (16) facing the driving connecting member (33) is provided with a toggle slot (164) that cooperates with the toggle boss (154) of the upper toggle plate (15), and the lower end of the toggle boss (154) is provided with a guide inclined surface that cooperates with the toggle slot (164).

3. The powder door device of a coffee machine according to claim 2, characterized in that: The upper toggle plate (15) is provided with a guide rib (153), the powder door gear (13) is provided with a limit groove (132), the guide rib (153) cooperates with the limit groove (132), and the upper toggle plate (15) moves up and down along the limit groove (132).

4. The powder door device of a coffee machine according to claim 3, characterized in that: The upper toggle plate (15) is provided with an annular groove (152), and the bottom of the powder door spring (14) is in the annular groove (152) of the upper toggle plate (15).

5. The powder door device of a coffee machine according to claim 4, characterized in that: The upper dial plate (15), the lower dial plate (16) and the powder gate gear (13) rotate coaxially, and the powder gate gear (13) drives the spray mechanism (2) to rotate at the same time.

6. The powder door device of a coffee machine according to claim 5, characterized in that: The powder dropping rocker arm (17) extends toward the powder door (20) to form a driving arm, the driving arm is provided with a waist-shaped hole (172), the powder door (20) is provided with a round hole (201), the pin (19) passes through the waist-shaped hole (172) and the round hole (201) of the powder door (20) respectively, and the pin (19) gives way to the waist-shaped hole (172) during the rotation of the powder dropping rocker arm (17).

7. The powder door device of a coffee machine according to claim 1, characterized in that: The powder dropping component (1) is provided with a powder dropping bracket (18), and the sliding groove where the powder door (20) slides is formed by two slide groove accessories (21) and the powder dropping bracket (18). The opposite sides of the two slide groove accessories (21) are provided with stepped slide groove frames (61). When the two slide groove accessories (21) are fixedly connected to the powder dropping bracket (18), the sliding groove required for the powder door (20) to slide is formed between the two slide groove frames (61) and the outer side wall of the bottom of the powder dropping bracket (18).

8. A coffee machine, characterized in that: The coffee machine is equipped with the powder door device according to any one of claims 1 to 7.

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