Handle resetting structure of beverage brewing system

Abstract

The utility model discloses a beverage brewing system handle reset structure which comprises a machine shell (1), a piston (2) and a driving mechanism (3), the driving mechanism (3) comprises a first connecting rod (31), and the first end of the first connecting rod (31) is hinged to the rear portion of the machine shell (1); the first end of the second connecting rod (32) is hinged to the rear portion of the piston (2), and the second end of the second connecting rod (32) is hinged to the second end of the first connecting rod (31); the handle assembly is used for driving the first connecting rod (31) and the second connecting rod (32) to rotate relatively; the air compressor is characterized by further comprising a torsion spring (4), and the torsion spring (4) acts between the first connecting rod (31) and the machine shell (1) so that the first connecting rod (31) can always have the trend of overturning upwards, and then the second connecting rod (32) drives the piston (2) to move backwards. Compared with the prior art, the handle reset structure of the beverage brewing system is convenient to install and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of beverage brewing equipment technology, specifically to a handle reset structure for a beverage brewing system. Background Technology

[0002] A coffee machine is a type of beverage brewing equipment. The brewing system is the main component of a coffee machine. The brewing system includes a fixed part and a moving part (also called a piston). One of the fixed and moving parts has a needle, which is directly fixed to the part. The moving part is driven by a drive structure and can slide relative to the fixed part. When the fixed and moving parts are closed, they form a brewing chamber. During brewing, the coffee capsule is located in the brewing chamber. During extraction, heated water is pumped into the extraction chamber by a water pump. The water flows through the coffee raw material to be extracted, and the coffee beverage flows from the coffee machine's water outlet into the cup.

[0003] Most brewing systems use a handle-driven mechanism to reciprocate the piston. During operation, the user opens the handle and inserts a coffee capsule; closing the handle initiates brewing and extraction. After extraction, the handle must be opened again to reset. If the handle is not fully open, it will prevent used coffee capsules from falling out automatically and will also affect the insertion of new capsules. Existing coffee machines typically use multiple tension springs to achieve automatic handle reset; see Chinese patent application CN201510446333.1, "Capsule Coffee Machine Unloading Device," for details.

[0004] However, the aforementioned handle reset structure has many components, making installation inconvenient and costly. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a handle reset structure for a beverage brewing system that is easy to install and low in cost, in light of the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: a handle reset structure for a beverage brewing system, including a housing, a piston that can slide back and forth and is limited within the housing, and a drive mechanism for driving the piston to translate back and forth. The drive mechanism includes...

[0007] The first link has its first end hinged to the rear of the housing;

[0008] The second connecting rod has its first end hinged to the rear of the piston, and its second end hinged to the second end of the first connecting rod; and

[0009] A handle assembly is used to drive the first link and the second link to rotate relative to each other.

[0010] The feature is that it further includes a torsion spring, which acts between the first connecting rod and the housing, so that the first connecting rod always has an upward flipping tendency, thereby driving the piston to move backward through the second connecting rod.

[0011] To ensure stability when the piston moves forward to its limit position, the axis of relative rotation between the first connecting rod and the housing is denoted as the first axis, the axis of relative rotation between the second connecting rod and the piston is denoted as the second axis, and the axis of relative rotation between the first connecting rod and the second connecting rod is denoted as the third axis.

[0012] When the piston has moved forward to its limit position, the third axis is located below the plane containing the first and second axes.

[0013] To facilitate the hinge of the first end of the first connecting rod at the rear of the housing, the rear of the housing has a pin extending in the left-right direction, and the first end of the first connecting rod has a first rotating sleeve rotatably sleeved on the outer periphery of the pin.

[0014] To facilitate the installation of the torsion spring, a first limiting rib extending in the left and right direction is provided on the outer peripheral wall of the first rotating sleeve, and a recess is provided on the inner wall of the housing at the end of the pin.

[0015] The torsion spring is sleeved on the outer periphery of the pin, with the first end of the torsion spring abutting against the inner wall of the recess and the second end of the torsion spring abutting against the first limiting rib.

[0016] To further improve the ease of installation of the torsion spring, a second limiting rib extending in the left-right direction is also provided on the outer peripheral wall of the first rotating sleeve. The second limiting rib is arranged at intervals with the first limiting rib, and a slot for the second end of the torsion spring to be inserted is formed between the second limiting rib and the first limiting rib.

[0017] To make opening and closing the handle easier by utilizing the lever principle, the handle assembly includes:

[0018] The third link, the first end of which is hinged to the second end of the first link; and

[0019] The handle has a first end hinged to the rear of the housing, and a downwardly extending connecting arm located between the first end and the second end, the end of which is hinged to the second end of the third link.

[0020] With the handle fully open, the piston moves backward to its limit position;

[0021] With the handle closed, the piston moves forward to its limit position.

[0022] To further ensure that opening and closing the handle is effortless, the distance between the connecting arm and the first end of the handle is smaller than the distance between the connecting arm and the second end of the handle.

[0023] To avoid interference between the housing and the connecting rod, a clearance hole is provided on the top wall of the housing to allow space for the first and second connecting rods.

[0024] In order to limit the extreme position of the piston's rearward movement, the first connecting rod abuts against the edge of the rear side of the relief hole when the piston is in the extreme position of its rearward movement.

[0025] In order to limit the extreme position of the piston's forward movement, the second connecting rod has a downwardly extending stop portion that abuts against the bottom wall of the housing when the piston has moved forward to its extreme position.

[0026] Compared with the prior art, the advantage of this utility model is that by setting the first connecting rod between the first connecting rod and the housing, after the coffee is made, the handle only needs to be opened at a slight angle, and the handle will rely on the torsion spring arm to release the rebound force to complete the reset. This handle reset structure is more convenient to install, less expensive, and more ingenious and reliable. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of the handle reset structure of the beverage brewing system of this utility model in the fully open state.

[0028] Figure 2 for Figure 1 A longitudinal sectional view;

[0029] Figure 3 for Figure 1 A three-dimensional structural diagram of the piston, drive mechanism, and torsion spring;

[0030] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure from another direction;

[0031] Figure 5 for Figure 1 A 3D structural diagram of the middle handle after it has been switched to the off state;

[0032] Figure 6 for Figure 5 A longitudinal sectional view;

[0033] Figure 7 for Figure 5 A three-dimensional structural diagram of the piston, drive mechanism, and torsion spring. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0036] like Figures 1 to 7 The image shows a preferred embodiment of the handle reset structure of the beverage brewing system of this utility model. The handle reset structure includes a housing 1, a piston 2, a drive mechanism 3, and a torsion spring 4.

[0037] The rear part of the housing 1 has a pin 11 extending in the left-right direction; the inner wall of the housing 1 has a recess 12 at the end of the pin 11; the top wall of the housing 1 has a clearance hole 13 for making way for the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33.

[0038] The piston 2 can slide back and forth within the housing 1.

[0039] The drive mechanism 3 includes a first link 31, a second link 32, a third link 33, and a handle 34.

[0040] Specifically, the first end of the first connecting rod 31 has a first rotating sleeve 311 that is rotatably sleeved on the outer periphery of the pin 11, thereby realizing the hinge of the first end of the first connecting rod 31 at the rear of the housing 1; the outer peripheral wall of the first rotating sleeve 311 is provided with a first limiting rib 3111 and a second limiting rib 3112 extending in the left and right direction, the first limiting rib 3111 and the second limiting rib 3112 are arranged at intervals, and a slot 3113 is formed between them;

[0041] There are two second connecting rods 32, which are arranged side by side in the left-right direction; the first end of each second connecting rod 32 is hinged to the rear of the piston 2, and the second end of each second connecting rod 32 is hinged to the second end of the first connecting rod 31; the middle part of the second connecting rod 32 has a downwardly extending stop 321.

[0042] The first end of the third link 33 is hinged to the second end of the first link 31;

[0043] The first end of the handle 34 is hinged to the top side of the rear of the housing 1; the handle 34 has a downwardly extending connecting arm 341 located between the first end and the second end, the end of the connecting arm 341 is hinged to the second end of the third link 33, and the distance between the connecting arm 341 and the first end of the handle 34 is smaller than the distance between the connecting arm 341 and the second end of the handle 34, so that the handle 34 is easier to open and close by lever principle.

[0044] In this embodiment, the handle assembly consisting of the third link 33 and the handle 34 can drive the first link 31 and the second link 32 to rotate relative to each other, thereby driving the piston 2 to move back and forth. Of course, it is also possible to simply set the handle 34 directly connected to the first link 31 to achieve the same function.

[0045] The torsion spring 4 is sleeved on the outer periphery of the pin 11. The first end of the torsion spring 4 abuts against the inner side wall of the recess 12, and the second end of the torsion spring 4 is inserted into the slot 3113 and abuts against the first limiting rib 3111, so that the first connecting rod 31 always has an upward flipping tendency, and then drives the piston 2 to move backward through the second connecting rod 32.

[0046] In addition, the axis of relative rotation between the first connecting rod 31 and the housing 1 is denoted as the first axis, the axis of relative rotation between the second connecting rod 32 and the piston 2 is denoted as the second axis, and the axis of relative rotation between the first connecting rod 31 and the second connecting rod 32 is denoted as the third axis.

[0047] With the handle 34 fully open, as Figures 1 to 4 As shown, piston 2 moves backward to its limit position. At this time, the first connecting rod 31 abuts against the edge of the rear side of the relief hole 13, preventing the first connecting rod 31 from continuing to flip upward.

[0048] With handle 34 in the closed state, such as Figures 5 to 7 As shown, piston 2 moves forward to its limit position. At this time, stop part 321 abuts against the bottom wall of housing 1, preventing the first connecting rod 31 from continuing to rotate downward. At the same time, the third axis is located below the plane where the first axis and the second axis are located. In this way, a negative angle lock is formed between the first connecting rod 31 and the second connecting rod 32. When no external force is applied, handle 34 is locked in the closed state.

[0049] The working principle of this embodiment is as follows:

[0050] (1) With handle 34 fully open, such as Figures 1 to 4 As shown, piston 2 moves backward to its extreme position. When coffee needs to be made, first insert the coffee capsule, then close handle 34. Through the connecting rods, piston 2 moves forward to the position shown. Figures 5 to 7Once the extreme position shown is reached, coffee brewing and extraction can begin. At this point, the third axis is located below the plane containing the first and second axes, thus creating a negative angle lock between the first link 31 and the second link 32.

[0051] (2) After the coffee is made, simply open the handle 34 at a slight angle to disengage the first link 31 and the second link 32 from the locked position. The handle 34 will then rely on the torsion spring 4 to release the rebound force to complete the reset. This saves the user effort and ensures that the handle is fully opened and reset.

[0052] The aforementioned handle reset structure is easier to install, cheaper, and more ingenious and reliable.

Claims

1. A handle reset structure of a beverage brewing system, comprising a machine shell (1), a piston (2) capable of sliding forward and backward and being limited in the machine shell (1), and a driving mechanism (3) for driving the piston (2) to translate forward and backward, the driving mechanism (3) comprising a first connecting rod (31), a first end of which is hingedly connected to a rear portion of the machine shell (1); a second connecting rod (32), a first end of which is hingedly connected to a rear portion of the piston (2), and a second end of which is hingedly connected to a second end of the first connecting rod (31); and a handle assembly for driving the first connecting rod (31) and the second connecting rod (32) to rotate relative to each other; characterized in that a torsion spring (4) is further arranged between the first connecting rod (31) and the machine shell (1), so that the first connecting rod (31) always has a tendency to turn upward, and then drives the piston (2) to move backward through the second connecting rod (32).

2. The handle return structure of the beverage brewing system according to claim 1, characterized by: An axis of rotation of the first connecting rod (31) and the machine shell (1) relative to each other is defined as a first axis, an axis of rotation of the second connecting rod (32) and the piston (2) relative to each other is defined as a second axis, and an axis of rotation of the first connecting rod (31) and the second connecting rod (32) relative to each other is defined as a third axis; In a state where the piston (2) moves forward to a limit position, the third axis is below a plane in which the first axis and the second axis are located.

3. The handle return structure of the beverage brewing system according to claim 1, characterized by: The rear portion of the machine shell (1) has a pin shaft (11) extending in a left-right direction, and the first end of the first connecting rod (31) has a first rotating sleeve (311) rotatably sleeved on an outer periphery of the pin shaft (11).

4. The handle return structure of the beverage brewing system according to claim 3, characterized by: An outer peripheral wall of the first rotating sleeve (311) has a first limiting rib (3111) extending in the left-right direction protruding therefrom, and the machine shell (1) has a recess (12) at a position of an end portion of the pin shaft (11) on an inner wall thereof; The torsion spring (4) is sleeved on an outer periphery of the pin shaft (11), a first end of the torsion spring (4) abuts against an inner side wall of the recess (12), and a second end of the torsion spring (4) abuts against the first limiting rib (3111).

5. The handle return structure of the beverage brewing system according to claim 4, characterized in that: An outer peripheral wall of the first rotating sleeve (311) further has a second limiting rib (3112) extending in the left-right direction protruding therefrom, the second limiting rib (3112) is arranged in a spaced manner from the first limiting rib (3111), and a slot (3113) for inserting the second end of the torsion spring (4) is formed between the first limiting rib (3111) and the second limiting rib (3112).

6. The handle return structure of the beverage brewing system according to claim 1, characterized by: The handle assembly comprises a third connecting rod (33), a first end of which is hingedly connected to a second end of the first connecting rod (31); and a handle (34), a first end of which is hingedly connected to the rear portion of the machine shell (1), and a connecting arm (341) extending downward is arranged at a position between the first end and a second end of the handle (34), an end portion of the connecting arm (341) is hingedly connected to a second end of the third connecting rod (33); In a state where the handle (34) is fully opened, the piston (2) moves backward to a limit position; In a state where the handle (34) is closed, the piston (2) moves forward to a limit position.

7. The handle return structure of the beverage brewing system according to claim 6, characterized by: The distance between the connecting arm (341) and the first end of the handle (34) is less than the distance between the connecting arm (341) and the second end of the handle (34).

8. The handle return structure of the beverage brewing system according to any one of claims 1 to 7, characterized in that: A clearance hole (13) is formed in the top wall of the casing (1) to accommodate the first connecting rod (31) and the second connecting rod (32).

9. The handle return structure of the beverage brewing system according to claim 8, characterized by: In the state that the piston (2) moves backward to the limit position, the first connecting rod (31) abuts against the edge at the rear side of the clearance hole (13).

10. The handle return structure of the beverage brewing system according to any one of claims 1 to 7, characterized in that: The second connecting rod (32) has a downwardly extending stopper (321), which abuts against the bottom wall of the casing (1) in the state that the piston (2) moves forward to the limit position.

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