Lock catch structure of brewing unit of coffee machine
By introducing through holes and pressing plate structures into the coffee machine, the problem of the elastic column sliding out of the fixed seat is solved, and the elastic column is reliable locked and simplified clutch is achieved, which reduces the height and cost of the coffee machine.
Patent Information
- Application Number
- CN202421735353.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In existing coffee machines, the elastic column easily slides out of the fixed seat, resulting in inconvenient assembly and maintenance, and the structure is complex, which increases the height and cost of the coffee machine.
The through holes and pressure plate structure are arranged in the fixed seat. By cooperating with the pressure plate and the elastic column, the accurate positioning and simplifying clutch of the elastic column are achieved. The return spring and projection design are adopted to ensure that the elastic column is locked and unlocked reliably when needed.
It simplifies the clutch structure of the coffee machine, reduces the product height, improves the reliability of the loading frame and piston push plate, and facilitates the replacement of the elastic column.
Smart Images
Figure CN223143277U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of coffee machines, and particularly relates to a buckle structure of a brewing unit of a coffee machine. Background Art
[0002] The existing fully automatic coffee machines realize the automatic completion of coffee making, and the process includes bean grinding, powder receiving, powder pressing, brewing, dreg scraping, cleaning, etc. However, the structures of fully automatic coffee machines are relatively complex. Among them, how to control the relative movement sequence and position between the piston and the brewing cup to achieve the correct brewing sequence is also one of the difficulties of fully automatic coffee machines, and the piston push plate pushes the piston to move. At present, a spring post is installed between the fixed seat and the piston push plate of the coffee machine, and the spring post is assembled on the piston push plate. Since the spring post has no pressure plate limit, the spring post is likely to slide out of the fixed seat during production line assembly or user maintenance, resulting in the easy loss or difficult installation of the spring post, bringing great inconvenience to production line assembly and maintenance. In addition, since the spring post is not limited, in order to prevent the spring post from sliding out of the fixed seat, the fixed seat needs to be lengthened to hold the spring post, so that the movement direction of the loading rack is longer, which will increase the height or length of the coffee machine and increase the cost. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a buckle structure of a brewing unit of a coffee machine with a simple structure and accurate control of the movement of the spring post.
[0004] The above purpose is achieved as follows.
[0005] A buckle structure of a brewing unit of a coffee machine includes a fixed seat, a loading rack, a piston push plate, a brewing cup and a piston. The loading rack further includes an outer peripheral wall and an inner peripheral wall. A part of the fixed seat is arranged between the outer peripheral wall and the inner peripheral wall. The side wall of the piston push plate is located between the inner peripheral wall and the fixed seat. The bottom end of the piston push plate is fixedly connected to the bottom end of the piston. The brewing cup is arranged in the cavity of the inner peripheral wall and is linked with it. The upper end of the piston is located in the brewing cup.
[0006] A through hole perpendicular to the movement direction of the loading rack is arranged in the fixed seat. A spring post is arranged in the through hole. A return spring is arranged through the spring post. A protrusion radially protrudes from the surface between the outer end and the inner end of the spring post. A notch is arranged on the side wall of the piston push plate corresponding to the inner end of the through hole. When the inner end of the spring post is inserted into the notch, the piston push plate is locked on the fixed seat. A pressure plate is arranged at the outer end of the through hole, and the pressure plate is flush with the outer surface of the fixed seat. A spring post hole corresponding to the outer end of the spring post is arranged on the pressure plate. The radial dimension of the protrusion is larger than the radial dimension of the spring post hole. When the outer end of the spring post loses the extrusion of the outer peripheral wall, the spring post is pushed by the elastic force of the return spring to move towards the outside of the spring post hole. At this time, the inner end of the spring post leaves the notch, and the piston push plate can move relative to the fixed seat. When the spring post moves towards the outside of the spring post hole, the protrusion is blocked by the pressure plate and cannot completely pass through the spring post hole.
[0007] The purpose of the utility model can also be solved by adopting the following technical measures.
[0008] Preferably, the pressing plate is fixed on the fixed seat by a snap or a screw.
[0009] Preferably, the outer end of the elastic post is a spherical surface or an inclined surface, which can cooperate with the bottom end of the inner surface of the peripheral wall of the loading rack.
[0010] Preferably, a chamfer is provided at the bottom end of the inner surface of the peripheral wall of the loading rack, and the angle of the chamfer matches the shape of the outer end of the elastic post, so that the loading rack can squeeze the elastic post more smoothly.
[0011] Preferably, the return spring is limited between the protrusion and the near-notch end of the through hole.
[0012] Preferably, the protrusion is a ring of flange or a pair of small blocks, and the radial dimension of the protrusion is larger than the radial dimension of the elastic post hole and smaller than the radial dimension of the maximum end of the through hole.
[0013] After adopting the above technical solution, the utility model simplifies the clutch structure by adding a pressing plate, significantly reduces the height of the product, ensures reliable clutch between the loading rack and the piston push plate, and is convenient for replacing the elastic post after wear. Description of the Drawings
[0014] Figure 1 It is a schematic diagram of the internal structure of the brewing cup when the elastic post is not unlocked.
[0015] Figure 2 It is Figure 1 The enlarged view of part A of
[0016] Figure 3 It is a top view of the internal structure of the brewing cup.
[0017] Figure 4 It is Figure 3 The enlarged view of part B of
[0018] Figure 5 It is a schematic diagram of the internal structure of the brewing cup after the elastic post is unlocked.
[0019] Figure 6 It is a schematic diagram of the internal structure of the brewing cup when the elastic post is squeezed.
[0020] Figure 7 It is Figure 6 The enlarged view of part C of
[0021] Figure 8 It is the enlarged view of the internal structure of Embodiment 2.
[0022] Figure 9 It is the enlarged view of the internal structure of Embodiment 3. Detailed Embodiments
[0023] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0024] Embodiment 1, in combination with Figures 1 to 4 , a latch structure of a coffee machine brewing unit, including a fixed seat 4, a loading rack 2, a piston push plate 3, a brewing cup 1 and a piston 5. The loading rack 2 further includes an outer peripheral wall 21 and an inner peripheral wall 22. The fixed seat 4 is arranged between the outer peripheral wall 21 and the inner peripheral wall 22. The side wall 31 of the piston push plate 3 is located between the inner peripheral wall 22 and the fixed seat 4. The bottom end of the piston push plate 3 is connected to the bottom end of the piston 5. The brewing cup 1 is arranged in the cavity of the inner peripheral wall 22 and is interlocked therewith. The upper end of the piston 5 is located inside the brewing cup 1.
[0025] A through hole 6 perpendicular to the moving direction of the loading rack 2 is provided in the fixed seat 4. A spring post 7 is arranged in the through hole 6. A return spring 8 is arranged on the spring post 7. A protrusion 12 radially protrudes from the surface between the outer end 71 and the inner end 72 of the spring post 7. A notch 11 is provided on the side wall 31 of the piston push plate 3 corresponding to the inner end of the through hole 6. When the inner end 72 of the spring post 7 is inserted into the notch 11, the piston push plate 3 is locked on the fixed seat 4. A pressure plate 9 is provided at the outer end of the through hole 6. The pressure plate 9 is installed on the fixed seat by a buckle. The pressure plate 9 is flush with the outer surface of the fixed seat 4. A spring post hole 10 corresponding to the outer end 71 of the spring post 7 is provided on the pressure plate 9. The radial dimension of the protrusion 12 is larger than the radial dimension of the spring post hole of the spring post 7.
[0026] In combination with Figures 5 to 7 , when the loading rack 2 moves upward relative to the fixed seat 4, the outer peripheral wall 21 moves upward relative to the fixed seat 4. When the outer end 71 of the spring post 7 loses the extrusion of the outer peripheral wall 21, the spring post 7 is pushed by the elastic force of the return spring 8 to move outward relative to the spring post hole 10. At this time, the inner end 72 of the spring post 7 leaves the notch 11, and the piston push plate 3 can move relative to the fixed seat 4. When the spring post 7 moves outward relative to the spring post hole 10, the protrusion 12 is blocked by the pressure plate 9 and cannot completely pass through the spring post hole 10.
[0027] When the loading rack 2 moves downward relative to the fixed seat 4, the chamfered surface at the bottom end of the inner surface of the outer peripheral wall 21 squeezes the outer end 71 of the spring post 7. The spring post 7 compresses the return spring 8. The outer end of the spring post 7 is pressed into the spring post hole 10. The inner end 72 of the spring post 7 extends out of the spring post hole 10 and is inserted into the notch 11 to lock the piston push plate 3.
[0028] Embodiment 2, in combination with Figure 8 , the difference between Embodiment 2 and Embodiment 1 lies in the different fixing methods of the pressure plate. The specific implementation process of the difference in Embodiment 2 is as follows: The pressure plate 9 is fixed on the fixed seat 4 by screws.
[0029] Embodiment 3, in combination with Figure 9, the difference between Example 3 and Example 1 lies in the outer end face of the spring post 7. The specific implementation process of the different part in Example 3 is as follows: the outer end portion 73 of the spring post 7 is an inclined surface, which cooperates with the chamfered surface 211 at the bottom of the outer peripheral wall 21 of the loading rack 2 near the fixed seat 4, making the process of the outer peripheral wall 21 squeezing the spring post 7 smoother.
Claims
1. A locking structure for a brewing unit of a coffee machine, comprising a fixed seat, a loading rack, a piston push plate, a brewing cup and a piston. The loading rack further includes an outer peripheral wall and an inner peripheral wall. A part of the fixed seat is disposed between the outer peripheral wall and the inner peripheral wall. The side wall of the piston push plate is located between the inner peripheral wall and the fixed seat. The bottom end of the piston push plate is connected to the bottom end of the piston. The brewing cup is disposed in the cavity of the inner peripheral wall and is interlocked therewith. The upper end of the piston is located in the brewing cup. It is characterized in that: A through hole perpendicular to the moving direction of the loading rack is provided in the fixed seat. A spring post is provided in the through hole. A return spring is sleeved on the spring post. A protrusion radially protrudes from the surface of the spring post. A notch is provided on the side wall of the piston push plate corresponding to the inner end of the through hole. When the inner end of the spring post is inserted into the notch, the piston push plate is locked on the fixed seat. A pressing plate is provided at the outer end of the through hole. A spring post hole is provided on the pressing plate corresponding to the outer end of the spring post. The radial dimension of the protrusion is larger than the radial dimension of the spring post hole. When the outer end of the spring post loses the extrusion of the peripheral wall, the spring post is pushed by the elastic force of the return spring to move outward relative to the spring post hole. At this time, the inner end of the spring post leaves the notch, and the piston push plate can move relative to the fixed seat. When the spring post moves outward relative to the spring post hole, the protrusion does not pass through the spring post hole.
2. The latch structure of the coffee machine brewing unit according to claim 1, wherein: The pressing plate is fixed on the fixed seat by a buckle or a screw.
3. The latch structure of the coffee machine brewing unit according to claim 1, characterized in that: The outer end of the spring post is a spherical surface or an inclined surface.
4. The latch structure of the coffee machine brewing unit according to claim 1, characterized in that: A chamfer is provided at the bottom end of the peripheral wall of the loading rack near the fixed seat.
5. The latch structure of the coffee machine brewing unit according to claim 1, characterized in that: The return spring is limited between the protrusion and the notch near end of the through hole.
6. The latch structure of the coffee machine brewing unit according to claim 1, characterized in that: The protrusion is a ring of flange or a pair of small blocks.