Coffee machine and bean feeding adjusting method thereof

Abstract

The coffee machine comprises a grinding main machine and a bean cup assembly, the upper portion of the grinding main machine is rotatably connected with an adjusting part, the adjusting part is provided with an unlocking gear and an adjusting gear, the bean cup assembly comprises a bean cup part, a chuck, an adjusting outlet cover and a rotary knob, first coffee holes are formed in the bottom of the bean cup part in the circumferential direction at intervals, and the first coffee holes are communicated with the adjusting outlet cover. A second coffee hole corresponding to the first coffee hole is formed in the middle of the adjusting outlet cover, the adjusting outlet cover is provided with an adjusting hole and an elastic clamping hook in the outer circumferential direction, a limiting baffle is arranged at the end of the adjusting hole, the connecting column penetrates through the adjusting hole to be fixedly connected with the rotary knob, and the elastic clamping hook protrudes downwards. When coffee beans are added, the thickness degree of ground coffee powder can be adjusted, the bean cup can be continuously kept in an open state to facilitate feeding of the coffee beans when the grinding thickness degree is adjusted, and it can be ensured that the bean cup is closed when the bean cup assembly is disassembled, so that the coffee beans in the bean cup part cannot leak out. The invention further provides a bean feeding adjusting method of the coffee machine.

Description

Technical Field

[0001] The present invention belongs to the technical field of coffee machines, and particularly relates to a coffee machine and a method for adjusting the bean feeding thereof. Background Art

[0002] When a coffee machine is in use, coffee beans need to be added to the coffee machine for grinding. Usually, the coffee beans are poured into the bean cup of the coffee machine. The bean cup controls the amount of coffee beans added through opening and closing. However, currently, the bean cup can only be opened and closed, and since there is a lid on the bean cup, it is impossible to observe whether the bottom of the bean cup is in the open state. Therefore, when disassembling the bean cup assembly, it often happens that the bottom of the bean cup is forgotten to be closed. When the bottom of the bean cup is still in the open state, the bean cup assembly is disassembled, resulting in coffee beans leaking out. The bean cup can only be opened and closed, and it is impossible to adjust the fineness of the ground coffee powder while adding coffee beans, which causes inconvenience in use. Therefore, in order to avoid the disadvantages existing in the prior art, it is necessary to improve the prior art. Summary of the Invention

[0003] The purpose of the present invention is to provide a coffee machine that can adjust the fineness of the ground coffee powder while adding coffee beans, and the bean cup can remain open continuously for feeding coffee beans when adjusting the grinding fineness, and can ensure that the bean cup is closed when disassembling the bean cup assembly so that the coffee beans in the bean cup will not leak out. The present invention also provides a method for adjusting the bean feeding of a coffee machine.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0005] A coffee machine, comprising a grinding main body and a bean cup assembly. An adjusting part is provided above the grinding main body. The adjusting part is provided with an unlocking gear and an adjusting gear. The bean cup assembly includes a bean cup part, a chuck, an adjusting outlet cover and a knob. The knob is installed in the adjusting part, and the knob is screwed to the adjusting part. The chuck is arranged above the knob and installed in the adjusting part. The chuck is detachably connected to the adjusting part and relatively fixed to the adjusting part. A first buckle is arranged on the outer side surface of the adjusting outlet cover, and a first clamping groove cooperating with the first buckle is arranged on the inner side of the chuck. The first buckle and the first clamping groove are clamped. A connecting column is fixedly connected to the lower part of the bean cup part, and the connecting column passes through the adjusting outlet cover and is fixedly connected to the knob. Wherein, first coffee holes are arranged at intervals along the circumferential direction at the bottom of the bean cup part, and a second coffee hole corresponding to the first coffee hole is arranged in the middle of the adjusting outlet cover. When the knob is in the unlocking gear, the first coffee hole and the second coffee hole are staggered. When the knob is screwed to the adjusting gear, the first coffee hole and the second coffee hole are aligned and communicated. Adjusting holes and elastic hooks are arranged on the outer circumference of the adjusting outlet cover. A limiting baffle is arranged at the end of the adjusting hole. The connecting column passes through the adjusting hole and is fixedly connected to the knob. The hook part of the elastic hook protrudes downward, and the elastic hook can undergo elastic deformation under the action of an external force. An upward protruding first convex block is arranged below the adjusting hole of the knob. A gentle slope is arranged on one side of the first convex block in the clockwise direction, and a steep slope is arranged on one side of the first convex block in the counterclockwise direction. When the knob is screwed to the adjusting part, the first convex block can push up the hook part of the elastic hook when passing through the elastic hook. The force required for the gentle slope to push up the elastic hook is less than the clamping and locking force of the first buckle and the first clamping groove in the clockwise direction, and the force required for the steep slope to push up the elastic hook is less than the clamping and locking force of the first buckle and the first clamping groove in the counterclockwise direction.

[0006] As a preferred solution of the above coffee machine, the chuck is provided with a second convex block and a third convex block. A first clamping groove is formed between the second convex block and the third convex block. The second convex block is arranged on one side of the first buckle in the clockwise direction, and the third convex block is arranged on one side of the first buckle in the counterclockwise direction. A guiding slope is arranged at one end of the second convex block far away from the first clamping groove.

[0007] As a preferred solution of the above coffee machine, the force required for the steep slope to push up the elastic hook is greater than the frictional force when the first buckle slides along the guiding slope.

[0008] As a preferred solution of the above coffee machine, a screwing portion is provided on the outer side surface of the knob, a positioning protrusion is provided on the outer side surface of the chuck, a rotatable adjusting block is provided inside the adjusting portion, a fixed limiting block is provided above the adjusting block, the adjusting block is engaged with the screwing portion, and when the screwing portion rotates, it can abut against the adjusting block and drive it to rotate together, and the fixed limiting block is engaged with the positioning protrusion.

[0009] As a preferred solution of the above coffee machine, a positioning rib protruding outward is provided on the outer side surface of the chuck, and an initial position marking groove engaged with the positioning rib is formed on the adjusting portion.

[0010] As a preferred solution of the above coffee machine, a safety blocking block for preventing coffee beans from being blocked is provided inside the bean cup portion.

[0011] As a preferred solution of the above coffee machine, a bean cup cover is provided on the bean cup portion.

[0012] As a preferred solution of the above coffee machine, a limiting protrusion protruding in the radial direction is provided inside the chuck. When the knob is screwed to the limit position of the adjusting gear, the first buckle touches the limiting protrusion.

[0013] The present invention also provides a method for adjusting the bean feeding of a coffee machine, using the above coffee machine, including the following steps:

[0014] Step 1, adjust the bean cup portion to the initial position, the adjusting portion is at the unlocking gear position, the first coffee hole and the second coffee hole are in a staggered state, and at this time the first coffee hole and the second coffee hole are closed;

[0015] Step 2, after adding coffee beans to the bean cup portion, rotate the bean cup portion clockwise. When encountering the first damping feeling during the rotation process, continue to rotate. At this time, the gentle slope surface of the first convex block passes through the elastic hook and lifts the elastic hook. When encountering the damping feeling again, stop rotating. At this time, the connecting column touches the limiting baffle, the first coffee hole and the second coffee hole are in an aligned state, the first coffee hole and the second coffee hole are completely opened, and the coffee beans fall into the grinding system of the coffee machine through the adjusting portion, and the adjusting portion is at the adjusting gear;

[0016] Step 3, continue to rotate the bean cup portion clockwise to drive the adjusting portion to adjust the grinding fineness of the coffee powder. At this time, the connecting column is blocked by the limiting baffle, and continue to rotate to drive the first buckle and the first card slot to disengage from the clockwise engagement. If encountering the damping feeling during the continuous rotation, stop rotating, which means that the first buckle has touched the limiting protrusion and reached the gear limit of the adjusting portion;

[0017] Step 4: Rotate the bean cup part counterclockwise to drive the adjustment part to the unlocking gear. When the first sense of damping is encountered during the counterclockwise rotation, it means that the steep slope hits the elastic hook. Continuing to rotate will drive the adjustment outlet cover to continue rotating counterclockwise. When the second sense of damping is encountered, it means that the first buckle is re-engaged with the first card slot. Since the force required for the steep slope to lift the elastic hook is less than the locking force of the first buckle and the first card slot in the counterclockwise direction, continue to rotate at this time to make the steep slope lift the elastic hook, and then continue to rotate until the third sense of damping is encountered and stop, which means that the connecting column hits the limit baffle at the initial position. At this time, the adjustment part is in the unlocking gear, and the first coffee hole and the second coffee hole are also in the staggered initial closed state. Removing the bean cup assembly will not cause the coffee beans in the bean cup part to leak out.

[0018] Implementing a coffee machine provided by the present invention, compared with the prior art, its beneficial effects are as follows:

[0019] The knob and the chuck of the present invention are installed in the adjustment part, and the adjustment part can be driven by the knob to rotate to adjust the fineness of the ground coffee powder. During the process of adjusting the fineness of the ground coffee powder by the adjustment part, the first coffee hole and the second coffee hole can be kept in the aligned and open state. When disassembling the bean cup assembly, it can be ensured that the first coffee hole and the second coffee hole are in the staggered closed state. By providing a gentle slope and a steep slope on the first convex block in the clockwise direction, the force required for the first convex block to push open the elastic hook in the clockwise rotation is small, and the force required for the first convex block to push open the elastic hook in the counterclockwise rotation is large, so that the force required for the gentle slope to lift the elastic hook is less than the locking force of the first buckle and the first card slot in the clockwise direction, and the force required for the steep slope to lift the elastic hook is less than the locking force of the first buckle and the first card slot in the counterclockwise direction. In this way, different locking forces are required for unlocking at different positions through the mechanical structure, ensuring that when adjusting the gear, the first coffee hole and the second coffee hole are in the open state, and when disassembling the bean cup assembly, the first coffee hole and the second coffee hole are in the closed state. Moreover, the corresponding functions are realized through the mechanical structure, with high reliability in operation, low manufacturing cost, and being suitable for mass production. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0021] Figure 1 It is a schematic diagram of the coffee machine of the present invention Figure 1 ;

[0022] Figure 2 It is a schematic diagram of the coffee machine of the present invention Figure 2 ;

[0023] Figure 3 is Figure 2 A partially enlarged schematic view at the adjusting part;

[0024] Figure 4 is a schematic view of the assembly relationship of the bean cup assembly of the present invention;

[0025] Figure 5 is a schematic view of the internal state of the bean cup assembly when the first convex block of the present invention has not passed through the elastic hook;

[0026] Figure 6 is a schematic view of the internal state of the bean cup assembly after the first convex block of the present invention has passed through the elastic hook;

[0027] Figure 7 is a schematic view of the bean cup assembly of the present invention;

[0028] Figure 8 is a schematic view of the initial state of the chuck, the adjusting outlet cover and the knob of the present invention;

[0029] Figure 9 is Figure 8 A partially enlarged schematic view at the engagement position of the first buckle and the first card slot;

[0030] Figure 10 is a top view schematic of the chuck, the adjusting outlet cover and the knob of the present invention when the first buckle rotates to the limit protrusion;

[0031] Figure 11 is a schematic view of the adjusting outlet cover of the present invention.

[0032] Markings in the figure:

[0033] 100, grinding main machine; 110, adjusting part; 111, unlocking gear; 112, adjusting gear; 120, initial position marking groove; 130, fixed limit block; 140, adjusting block; 200, bean cup assembly; 210, bean cup part; 211, first coffee hole; 212, connecting column; 220, safety stop block; 230, bean cup cover; 240, chuck; 241, positioning protrusion; 242, positioning bone; 243, limit protrusion; 244, second convex block; 245, guiding inclined surface; 246, third convex block; 247, first card slot; 250, adjusting outlet cover; 251, second coffee hole; 252, elastic hook; 253, limit baffle; 254, adjusting hole; 255, first buckle; 260, knob; 261, screwing part; 262, first convex block; 263, gentle slope inclined surface; 264, steep slope inclined surface. Detailed implementation manners

[0034] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0035] In the description of the present invention, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0036] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] Please refer to Figures 1 to 11 , and now the coffee machine provided by the embodiment of the present invention will be described.

[0039] Such as Figures 1 to 11As shown, the coffee machine of the present invention includes a grinding host 100 and a bean cup assembly 200. An adjustment portion 110 is provided above the grinding host 100. The adjustment portion 110 is provided with an unlocking gear 111 and an adjustment gear 112. The bean cup assembly 200 includes a bean cup portion 210, a chuck 240, an adjustment outlet cover 250 and a knob 260. The knob 260 is installed in the adjustment portion 110 and is screwed together with the adjustment portion 110. The chuck 240 is provided above the knob 260 and is installed in the adjustment portion 110. The chuck 240 is detachably connected to the adjustment portion 110 and is fixed relative to the adjustment portion 110. The outer side of the regulating outlet cover 250 is provided with a first buckle 255, and the inner side of the chuck 240 is provided with a first slot 247 that cooperates with the first buckle 255. The first buckle 255 and the first slot 247 are engaged. A connecting post 212 is fixedly connected to the lower side of the bean cup part 210, and the connecting post 212 passes through the regulating outlet cover 250 and is fixedly connected to the knob 260. The bottom of the bean cup part 210 is provided with first coffee holes 211 at intervals along the circumferential direction, and the middle part of the regulating outlet cover 250 is provided with a second coffee hole 251 corresponding to the first coffee hole 211. When the knob 260 is in the unlocking gear 111, the first The coffee hole 211 and the second coffee hole 251 are staggered. When the knob 260 is screwed to the adjustment gear 112, the first coffee hole 211 and the second coffee hole 251 are aligned and connected. The outer periphery of the adjustment outlet cover 250 is provided with an adjustment hole 254 and an elastic hook 252. The end of the adjustment hole 254 is provided with a limit stopper 253. The connecting column 212 passes through the adjustment hole 254 and is fixedly connected to the knob 260. The hook portion of the elastic hook 252 is downwardly protruding. The elastic hook 252 can be elastically deformed under the action of external force. The knob 260 is provided with a first protruding block 262 protruding upward below the adjustment hole 254. The first The protrusion 262 is provided with a gently sloping surface 263 on one side in the clockwise direction, and the first protrusion 262 is provided with a steep slope 264 on one side in the counterclockwise direction. When the knob 260 is screwed into the adjusting portion 110, the first protrusion 262 can push up the hook portion of the elastic hook 252 when passing through the elastic hook 252. The force required by the gently sloping surface 263 to push up the elastic hook 252 is less than the clamping and locking force of the first buckle 255 and the first slot 247 in the clockwise direction. The force required by the steep slope 264 to push up the elastic hook 252 is less than the clamping and locking force of the first buckle 255 and the first slot 247 in the counterclockwise direction.

[0040] In the initial state, the first coffee hole 211 and the second coffee hole 251 are in a staggered state, and the bean cup part 210 is closed. When the bean cup part 210 rotates clockwise, the first coffee hole 211 and the second coffee hole 251 switch to an aligned state, and the bean cup part 210 opens, allowing coffee beans to fall into the coffee machine. During the rotation process, when the gentle slope surface 263 of the first bump 262 passes through the elastic catch 252, it can lift the elastic catch 252, causing the elastic catch 252 to undergo elastic deformation and pass through smoothly. After passing through, the elastic catch 252 returns to its original state under the action of elastic force. At this time, the adjusting part 110 is located at the adjusting gear 112, and the connecting column 212 just touches the limit baffle 253. The bean cup part 210 continues to rotate clockwise, driving the knob 260 to rotate within the adjusting part 110 to adjust the fineness of the ground coffee. Since the connecting column 212 has already touched the limit baffle 253, during the continued clockwise rotation, it will drive the adjusting outlet cover 250 to rotate, so that the first buckle 255 of the adjusting outlet cover 250 disengages from the first card slot 247 of the opening plate, and the adjusting outlet cover 250 can rotate until the first buckle 255 touches the limit protrusion 243 of the chuck 240. At this time, the adjusting part 110 is located at the maximum gear position.

[0041] When removing the bean cup assembly 200, the knob 260 needs to be rotated to the unlocking gear 111 of the adjusting part 110. Therefore, the bean cup part 210 needs to be rotated counterclockwise. During the counterclockwise rotation of the bean cup, the steep slope surface 264 of the first bump 262 first touches the elastic catch 252. Since the steep slope surface 264 is relatively steep, and the adjusting outlet cover 250 is still in a rotatable active state when the steep slope surface 264 touches the elastic catch 252, when continuing to rotate, the steep slope surface 264 will push the elastic catch 252 instead of immediately lifting the elastic catch 252. When rotating to the guiding slope surface 245 of the second bump 244, the first buckle 255 slides along the guiding slope surface 245 into the first card slot 247 to re-engage. At this time, when continuing to rotate counterclockwise, since the force required for the steep slope surface 264 to lift the elastic catch 252 is less than the locking force of the first buckle 255 and the first card slot 247 in the counterclockwise direction, therefore, continuing to rotate counterclockwise will not cause the first buckle 255 and the first card slot 247 to disengage again, but will cause the steep slope surface 264 of the first bump 262 to lift the elastic catch 252 and pass through the elastic catch 252 smoothly. The connecting column 212 moves along the adjusting hole 254 to the limit baffle 253 at the end of the adjusting hole 254. At this time, the adjusting part 110 is located at the unlocking gear 111, and the first coffee hole 211 and the second coffee hole 251 have also rotated to the initial staggered state, and the bean cup part 210 is closed. Therefore, when removing the bean cup assembly 200, it can be ensured that the coffee beans will not leak out.

[0042] The first bump 262 is provided with a gentle slope inclined surface 263 and a steep slope inclined surface 264 in the clockwise direction. When rotating clockwise, the elastic catch 252 is lifted by the gentle slope inclined surface 263. When rotating counterclockwise, the elastic catch 252 is lifted by the steep slope inclined surface 264. The shape structure of the first bump 262 enables the forces required to lift the elastic catch 252 during clockwise and counterclockwise rotations to be different. Thus, the force required for the gentle slope inclined surface 263 to lift the elastic catch 252 is less than the clamping and locking force of the first buckle 255 and the first card slot 247 in the clockwise direction, and the force required for the steep slope inclined surface 264 to lift the elastic catch 252 is less than the clamping and locking force of the first buckle 255 and the first card slot 247 in the counterclockwise direction. Cooperating with the adjustment of the outlet cover 250, different functional effects are achieved during clockwise and counterclockwise rotations. When rotating clockwise, the gentle slope inclined surface 263 can smoothly pass by the elastic catch 252 without affecting the clamping of the first buckle 255 and the first card slot 247. When rotating counterclockwise, the steep slope inclined surface 264 can push the elastic catch 252 to drive the adjustment outlet cover 250 to rotate counterclockwise so that the first buckle 255 and the first card slot 247 are re-clamped. Moreover, after re-clamping and continuing to rotate counterclockwise, the steep slope inclined surface 264 can lift the elastic catch 252 to prevent the first buckle 255 and the first card slot 247 from becoming disengaged again. The above corresponding functions are achieved through a mechanical structure, which has high reliability during operation, low manufacturing cost, and is suitable for mass production.

[0043] Exemplarily, the chuck 240 is provided with a second protrusion 244 and a third protrusion 246. A first card slot 247 is formed between the second protrusion 244 and the third protrusion 246. The second protrusion 244 is disposed on one side of the first buckle 255 in the clockwise direction, and the third protrusion 246 is disposed on one side of the first buckle 255 in the counterclockwise direction. The second protrusion 244 is provided with a guiding inclined surface 245 at one end away from the first card slot 247. The force required for the gentle slope inclined surface 263 to lift the elastic catch 252 is less than the clamping and locking force of the first buckle 255 and the first card slot 247 in the clockwise direction. The clamping and locking force of the first buckle 255 and the first card slot 247 in the clockwise direction, that is, the locking force between the first buckle 255 and the second protrusion 244, mainly depends on the inclined surface angle of the second protrusion 244 at one end close to the first card slot 247. The steeper the inclined surface, the greater the clamping and locking force. Therefore, when the gentle slope inclined surface 263 passes through the elastic catch 252, it will lift the elastic catch 252 and pass through smoothly, without causing the first buckle 255 to disengage from the clamping connection with the first card slot 247 in the clockwise direction. The force required for the steep slope inclined surface 264 to lift the elastic catch 252 is less than the clamping and locking force of the first buckle 255 and the first card slot 247 in the counterclockwise direction. The clamping and locking force of the first buckle 255 and the first card slot 247 in the counterclockwise direction, that is, the locking force between the first buckle 255 and the third protrusion 246, mainly depends on the inclined surface angle of the third protrusion 246 at one end close to the first card slot 247. The steeper the inclined surface, the greater the clamping and locking force. Therefore, after the first buckle 255 and the first card slot 247 are re-clamped, when the steep slope inclined surface 264 passes through the elastic catch 252, it will lift the elastic catch 252 and pass through smoothly, without causing the first buckle 255 to re-disengage from the clamping connection with the first card slot 247 in the counterclockwise direction.

[0044] Exemplarily, as a preferred solution of the above coffee machine, the force required for the steep slope inclined surface 264 to lift the elastic catch 252 is greater than the frictional force when the first buckle 255 slides along the guiding inclined surface 245. The guiding inclined surface 245 enables the bean cup part 210 to rotate counterclockwise. When the first buckle 255 rotates to the guiding inclined surface 245 of the second protrusion 244, the first buckle 255 slides along the guiding inclined surface 245 and undergoes elastic deformation until the first buckle 255 slides to the first card slot 247 and resumes its original shape to re-clamp. The force required for the steep slope inclined surface 264 to lift the elastic catch 252 being greater than the frictional force when the first buckle 255 slides along the guiding inclined surface 245 can ensure that when rotating counterclockwise, the steep slope inclined surface 264 of the first protrusion 262 can push the elastic catch 252 to drive the adjustment outlet cover 250 to rotate, so that the first buckle 255 moves along the guiding inclined surface 245 and re-enters the first card slot 247 to complete the clamping.

[0045] Exemplarily, a screwing portion 261 is provided on the outer side surface of the knob 260, a positioning protrusion 241 is provided on the outer side surface of the chuck 240, a rotatable adjusting block 140 is provided inside the adjusting portion 110, a fixed limiting block 130 is provided above the adjusting block 140, the adjusting block 140 cooperates with the screwing portion 261, and when the screwing portion 261 rotates, it can abut against the adjusting block 140 and drive it to rotate together, and the fixed limiting block 130 cooperates with the positioning protrusion 241. When the knob 260 rotates, the screwing portion 261 drives the adjusting block 140 inside the adjusting portion 110 to rotate for gear adjustment. Since the fixed limiting block 130 is provided above the adjusting block 140, after the knob 260 rotates, the fixed limiting block 130 blocks above the screwing portion 261 of the knob 260, playing a limiting role, so that the knob 260 cannot be directly lifted upward to remove and disassemble the bean cup assembly 200, playing a locking role. The knob 260 must be rotated to the initial position, that is, the adjusting portion 110 is in the unlocking gear 111, so that the bean cup assembly 200 can be lifted upward to ensure that the bean cup portion 210 is closed during disassembly.

[0046] Exemplarily, an outwardly protruding positioning bone 242 is provided on the outer side surface of the chuck 240, and an initial position marking groove 120 cooperating with the positioning bone 242 is provided on the adjusting portion 110. The cooperation of the positioning bone 242 and the initial position marking groove 120 plays a role in defining the initial position, facilitating the installation and disassembly of the bean cup assembly 200, and the cooperation of the positioning bone 242 and the initial position marking groove 120 also plays a limiting role to prevent the chuck 240 from being driven to rotate when the bean cup portion 210 rotates.

[0047] Exemplarily, a safety stop block 220 for preventing coffee beans from jamming is provided inside the bean cup portion 210. The safety stop block 220 is above the first coffee hole 211 and blocks a part of the coffee beans above the first coffee hole 211 to prevent too many coffee beans from squeezing together at the first coffee hole 211 and jamming the first coffee hole 211, resulting in the coffee beans not being able to fall smoothly.

[0048] Exemplarily, a radially protruding limiting protrusion 243 is provided inside the chuck 240. When the knob 260 is screwed to the limit position of the adjusting gear 112, the first buckle 255 touches the limiting protrusion 243. The limiting protrusion 243 limits the rotatable angle of the first buckle 255, so that the adjusting outlet cover 250 can only rotate until the first buckle 255 touches the limiting protrusion 243 of the chuck 240.

[0049] As a preferred solution of the above coffee machine, a bean cup cover 230 is covered on the bean cup portion 210.

[0050] The present invention also provides a method for adjusting the bean inlet of a coffee machine. Using the above coffee machine, the method includes the following steps:

[0051] Step 1: Adjust the bean cup portion 210 to the initial position. The adjusting portion 110 is at the unlocking gear position 111. The first coffee hole 211 and the second coffee hole 251 are in a staggered state, and at this time, the first coffee hole 211 and the second coffee hole 251 are closed.

[0052] Step 2: After adding coffee beans to the bean cup portion 210, rotate the bean cup portion 210 clockwise. When encountering the first sense of damping during the rotation process, continue to rotate. At this time, the gentle slope surface 263 of the first bump 262 passes through the elastic catch 252 and lifts the elastic catch 252. When encountering the sense of damping again, stop rotating. At this time, the connecting column 212 touches the limit baffle 253. The first coffee hole 211 and the second coffee hole 251 are in an aligned state, and the first coffee hole 211 and the second coffee hole 251 are completely opened. The coffee beans pass through the adjusting portion 110 and fall into the grinding system of the coffee machine. The adjusting portion 110 is at the adjusting gear position 112.

[0053] Step 3: Continue to rotate the bean cup portion 210 clockwise to drive the adjusting portion 110 to adjust the grinding fineness of the coffee powder. At this time, the connecting column 212 is blocked by the limit baffle 253. Continuing to rotate drives the first buckle 255 to disengage from the first card slot 247 in the clockwise direction. If encountering the sense of damping during continuous rotation, stop rotating, indicating that the first buckle 255 has touched the limit protrusion 243, reaching the gear limit of the adjusting portion 110.

[0054] Step 4: Rotate the bean cup portion 210 counterclockwise to drive the adjusting portion 110 to the unlocking gear position 111. When encountering the first sense of damping during the counterclockwise rotation process, it indicates that the steep slope surface 264 touches the elastic catch 252. Continuing to rotate will drive the adjusting outlet cover 250 to continue rotating counterclockwise. When encountering the second sense of damping, it indicates that the first buckle 255 and the first card slot 247 are re-engaged. Since the force required for the steep slope surface 264 to lift the elastic catch 252 is less than the locking force of the first buckle 255 and the first card slot 247 in the counterclockwise direction, at this time, continue to rotate to make the steep slope surface 264 lift the elastic catch 252, and then continue to rotate until encountering the third sense of damping and stop, indicating that the connecting column 212 touches the limit baffle 253 at the initial position. At this time, the adjusting portion 110 is at the unlocking gear position 111, and the first coffee hole 211 and the second coffee hole 251 are also in the staggered initial closed state. Removing the bean cup assembly 200 will not cause the coffee beans in the bean cup portion 210 to leak out.

[0055] Implementing a coffee machine provided by the present invention, compared with the prior art, its beneficial effects are as follows:

[0056] The knob 260 and the chuck 240 of the present invention are installed in the adjusting part 110, and can drive the adjusting part 110 to rotate to adjust the fineness of the ground coffee powder through the knob 260. During the process of adjusting the fineness of the ground coffee powder by the adjusting part 110, the first coffee hole 211 and the second coffee hole 251 can be kept in an aligned and open state. When disassembling the bean cup assembly 200, it can ensure that the first coffee hole 211 and the second coffee hole 251 are in a staggered and closed state. By providing a gentle slope surface 263 and a steep slope surface 264 along the clockwise direction on the first convex block 262, the force required to push open the elastic catch 252 when the first convex block 262 rotates clockwise is small, and the force required to push open the elastic catch 252 when rotating counterclockwise is large. The force required for the gentle slope surface 263 to lift the elastic catch 252 is less than the clamping and locking force of the first snap 255 and the first card slot 247 in the clockwise direction, and the force required for the steep slope surface 264 to lift the elastic catch 252 is less than the clamping and locking force of the first snap 255 and the first card slot 247 in the counterclockwise direction. In this way, different locking forces are achieved when unlocking at different positions through a mechanical structure, ensuring that when adjusting the gear 112, the first coffee hole 211 and the second coffee hole 251 are in an open state, and when disassembling the bean cup assembly 200, the first coffee hole 211 and the second coffee hole 251 are in a closed state. Moreover, the corresponding functions are realized through a mechanical structure, with high reliability in operation, low manufacturing cost, and being suitable for mass production.

[0057] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A coffee machine, characterized in that, Including: A grinding main body, an adjusting part is arranged above the grinding main body, and the adjusting part is provided with an unlocking gear and an adjusting gear; A bean cup assembly, the bean cup assembly includes a bean cup part, a chuck, an adjusting outlet cover and a knob, the knob is installed in the adjusting part, the knob is screwed with the adjusting part, the chuck is arranged above the knob, the chuck is installed in the adjusting part, the chuck is detachably connected with the adjusting part and is relatively fixed with the adjusting part, a first buckle is arranged on the outer side surface of the adjusting outlet cover, and a first clamping groove matched with the first buckle is arranged on the inner side of the chuck, the first buckle and the first clamping groove are clamped, a connecting column is fixedly connected to the lower part of the bean cup part, and the connecting column passes through the adjusting outlet cover and is fixedly connected with the knob; Wherein, first coffee holes are arranged at intervals along the circumferential direction at the bottom of the bean cup part, a second coffee hole corresponding to the first coffee hole is arranged in the middle of the adjusting outlet cover, when the knob is in the unlocking gear, the first coffee hole and the second coffee hole are staggered, and when the knob is screwed to the adjusting gear, the first coffee hole and the second coffee hole are aligned and communicated; Adjusting holes and elastic hooks are arranged on the outer periphery of the adjusting outlet cover, a limiting baffle is arranged at the end of the adjusting hole, the connecting column passes through the adjusting hole and is fixedly connected with the knob, the hook part of the elastic hook protrudes downward, the elastic hook can elastically deform under the action of an external force, a first convex block protruding upward is arranged below the adjusting hole of the knob, a gentle slope is arranged on one side of the first convex block in the clockwise direction, and a steep slope is arranged on one side of the first convex block in the counterclockwise direction. When the knob is screwed with the adjusting part, the first convex block can push up the hook part of the elastic hook when passing through the elastic hook; The force required for the gentle slope to push up the elastic hook is less than the clamping and locking force of the first buckle and the first clamping groove in the clockwise direction, and the force required for the steep slope to push up the elastic hook is less than the clamping and locking force of the first buckle and the first clamping groove in the counterclockwise direction.

2. The coffee machine according to claim 1, characterized in that, The chuck is provided with a second convex block and a third convex block, a first clamping groove is formed between the second convex block and the third convex block, the second convex block is arranged on one side of the first buckle in the clockwise direction, the third convex block is arranged on one side of the first buckle in the counterclockwise direction, and a guiding slope is arranged at one end of the second convex block away from the first clamping groove.

3. The coffee machine according to claim 2, characterized in that, The force required for the steep slope to push up the elastic hook is greater than the frictional force when the first buckle slides along the guiding slope.

4. The coffee machine according to claim 1, characterized in that, A screwing part is arranged on the outer side surface of the knob, a positioning protrusion is arranged on the outer side surface of the chuck, a rotatable adjusting block is arranged on the inner side of the adjusting part, a fixed limiting block is arranged above the adjusting block, the adjusting block is matched with the screwing part, and when the screwing part rotates, it can abut against the adjusting block and push it to rotate together, and the fixed limiting block is matched with the positioning protrusion.

5. The coffee machine according to claim 1, characterized in that, The outer side surface of the chuck is provided with a positioning bone protruding outward, and an initial position marking groove cooperating with the positioning bone is formed on the adjusting portion.

6. The coffee machine according to claim 1, wherein A safety stopper for preventing coffee beans from being blocked is arranged inside the bean cup portion.

7. The coffee machine according to claim 1, characterized in that A bean cup cover is provided on the bean cup portion.

8. The coffee machine according to claim 1, characterized in that, A limiting protrusion protruding radially is arranged inside the chuck. When the knob is screwed to the extreme position of the adjusting gear, the first buckle touches the limiting protrusion.

9. A method for adjusting the bean intake of a coffee machine, characterized in that, Using the coffee machine according to any one of claims 1 to 8, comprising the following steps: Step 1, adjust the bean cup portion to the initial position, the adjusting portion is at the unlocking gear position, the first coffee hole and the second coffee hole are in a staggered state, and at this time the first coffee hole and the second coffee hole are closed; Step 2, after adding coffee beans to the bean cup portion, rotate the bean cup portion clockwise. When encountering a damping feeling for the first time during the rotation process, continue to rotate. At this time, the gentle slope of the first convex block passes through the elastic catch and lifts the elastic catch. When encountering a damping feeling again, stop rotating. At this time, the connecting column touches the limiting baffle, the first coffee hole and the second coffee hole are in an aligned state, the first coffee hole and the second coffee hole are completely opened, and the coffee beans fall into the grinding system of the coffee machine through the adjusting portion. The adjusting portion is at the adjusting gear; Step 3, continue to rotate the bean cup portion clockwise to drive the adjusting portion to adjust the grinding fineness of the coffee powder. At this time, the connecting column is blocked by the limiting baffle. Continuing to rotate drives the first buckle and the first card slot to disengage from the clockwise engagement. If a damping feeling is encountered during continuous rotation, stop rotating, indicating that the first buckle has touched the limiting protrusion and reached the gear limit of the adjusting portion; Step 4, rotate the bean cup portion counterclockwise to drive the adjusting portion to the unlocking gear. When encountering a damping feeling for the first time during the counterclockwise rotation, it indicates that the steep slope touches the elastic catch. Continuing to rotate will drive the adjusting outlet cover to continue to rotate counterclockwise. When encountering a damping feeling for the second time, it indicates that the first buckle and the first card slot are re-engaged. Since the force required to lift the elastic catch by the steep slope is less than the locking force of the first buckle and the first card slot in the counterclockwise direction, continue to rotate at this time to lift the elastic catch by the steep slope, and then continue to rotate until encountering a damping feeling for the third time and stop, indicating that the connecting column touches the limiting baffle at the initial position. At this time, the adjusting portion is at the unlocking gear position, and the first coffee hole and the second coffee hole are also in a staggered initial closed state. Removing the bean cup assembly will not cause the coffee beans in the bean cup portion to leak out.

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