CN209770066U - Coffee machine - Google Patents

Abstract

The utility model relates to a coffee machine, which comprises a bracket, a brewing unit, a handle component and a pressure buffer device, wherein the brewing unit comprises a piston cylinder connected on the bracket, a piston which can be arranged in the piston cylinder in a sliding way up and down and a filter funnel component, the filter funnel component comprises a brewing base with an inner cavity and a filter funnel connected at the lower end of the brewing base, and the piston can move downwards and is in sealing fit with the brewing base to form a brewing chamber for brewing coffee; the handle assembly is in driving connection with the pressure buffering device, and the pressure buffering device is in driving connection with the piston; the handle assembly is hinged on the piston cylinder and can rotate along the hinged point to drive the pressure buffering device to slide up and down relative to the piston cylinder. The utility model provides a pressure buffer of coffee machine has the cushioning effect, has solved the problem that brings uncomfortable feeling when the effort between piston and the filter funnel surpasss certain pressure value, has greatly improved user experience.

Description

Coffee machine

Technical Field

The utility model relates to a coffee machine.

background

At present, a coffee machine generally comprises a support, a water inlet control device, a liquid outlet device and a brewing sealing cavity for brewing coffee, wherein the brewing sealing cavity comprises a brewing base matched on the support in a drawer mode and a piston assembly forming sealing fit with the brewing base, the piston assembly can be driven by a handle and a connecting rod transmission mechanism linked with the handle, the piston assembly can descend by rotating the handle, and the piston assembly and the brewing base are in sealing fit to form the brewing sealing cavity for brewing coffee.

In the in-service use process, different users are different to the demand of dose and the concentration of coffee, so the coffee machine generally all prepares the drawer of different specifications to brew the coffee of different doses, because the specification of drawer is different, the descending distance of piston will be different, wherein, in order to guarantee the leakproofness of coffee at the brewing process, the user must exert enough big power to the twist grip, under this condition, the user is in the downward in-process of twist grip drive piston subassembly, the dynamics of pushing down has different changes, it is on the large side to push down the power for a few, bring uncomfortable feeling for the user, influenced user experience.

Therefore, further improvements are needed in the existing coffee machines.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the current situation of the prior art is directed at providing a coffee machine that has cushioning effect when rotating the handle and exerting pressure.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a coffee machine comprises a support and a brewing unit arranged on the upper portion of the support, wherein the brewing unit comprises a piston cylinder connected to the support, a piston arranged in the piston cylinder in a vertically sliding manner and a filter funnel assembly in a drawer-type push-pull fit mode on one side of the support, the filter funnel assembly comprises a brewing base with an inner concave cavity and a filter funnel connected to the lower end of the brewing base, and the piston can move downwards and is in sealing fit with the brewing base to form a brewing chamber for brewing coffee; the handle assembly is in driving connection with the pressure buffering device, and the pressure buffering device is in driving connection with the piston; the handle assembly is hinged on the piston cylinder and can rotate along the hinged point to drive the pressure buffering device to slide up and down relative to the piston cylinder.

In order to enable the handle assembly to drive the piston to move up and down in the piston cylinder more flexibly, the handle assembly comprises a handle body and a linkage piece, wherein the tail end of the handle body is hinged on the upper end wall of the piston cylinder; the tail end of the handle body extends to form a branch portion which is arranged at an angle with the handle body, the starting end of the linkage piece is hinged to the branch portion, and the tail end of the linkage piece is hinged to the pressure buffering device. When the handle body rotates for a certain angle, the branch part of the handle body correspondingly rotates for the same angle and generates a certain height difference in the up-down direction, wherein the starting end of the linkage part hinged with the branch part can rotate together with the handle body and move upwards or downwards for a certain distance, and similarly, the tail end of the linkage part hinged on the pressure buffer device also rotates relative to the pressure buffer device and can drive the pressure buffer device and the piston to slide upwards or downwards along the inner wall of the piston cylinder; the handle assembly is simple in structure and convenient to assemble, and the piston can be driven to move by rotating the handle only by arranging the linkage piece.

as an improvement, the pressure buffering device at least comprises a movable part which can be movably connected to the upper end of the piston up and down, and a pressure regulating spring which is supported between the piston and the movable part, wherein the pressure regulating spring is positioned below the movable part and is in a compressed state, so that the movable part has a tendency of being far away from the piston; the movable piece is connected with the tail end of the linkage piece. The pressure regulating springs with different elastic coefficients can be selected according to the actual pressure when the handle assembly of the coffee machine is pressed down, so that a user has a proper hand feeling when pressing.

As an improvement, the movable piece is a pressure lever horizontally penetrating through the tail end of the linkage piece, and two ends of the pressure lever are connected with the upper end of the piston; the upper end of the piston is also provided with a containing groove for placing the pressure regulating spring, the upper end of the pressure regulating spring is supported on the pressure lever, and the lower end of the pressure regulating spring is supported on the bottom of the containing groove. The movable part of the pressure buffering device adopts a compression bar form, so that force can be better applied to the piston, and the stability of the piston moving in the piston cylinder is improved.

In order to conveniently assemble the pressure buffering device on the piston, the pressure buffering device further comprises two pressure plates which are pressed on the upper end of the piston and correspond to two ends of the pressure rod, an upper groove is formed in the lower end face of each pressure plate, a lower groove corresponding to the upper groove is formed in the piston, the upper groove and the lower groove are matched to form a movable groove, and the pressure rod can be movably arranged in the movable groove up and down.

In order to make the depression bar be in it is more steady when reciprocating in the activity inslot, the storage tank is two, is located two respectively the below of clamp plate, correspondingly, pressure regulating spring is two, locates two respectively in the storage tank and the top is held the both ends of depression bar.

As an improvement, the piston comprises a piston body and a sealing ring which is connected to the lower end of the piston body and can be matched with the filter funnel assembly; the piston body is internally provided with a water inlet channel which runs through from the upper end to the lower end, and the water inlet channel is internally provided with a one-way valve which is used for controlling water flow to enter the brewing chamber from the outside. The setting of check valve can avoid entering into the rivers of making the room and flow backwards to the outside along inhalant canal, specifically, in the use, the piston is down with the sealed cooperation back of filter funnel subassembly, begins to intake in the inhalant canal, because outside water pressure is great, makes the room pressure little, so the check valve opens makes rivers enter into making the room, prepares for making the coffee next step.

as an improvement, the filtering funnel is a single-cup dosage funnel with one liquid outlet or a double-cup dosage funnel with two liquid outlets. The user can select a single cup dosage funnel or a double cup dosage funnel according to different dosage requirements.

As an improvement, the handle body is rotationally connected with the upper end wall of the piston cylinder through a first pin shaft, and the branch part of the handle body is rotationally connected with the starting end of the linkage part through a second pin shaft; when the handle body rotates around the axis of the first pin shaft and drives the piston to move downwards, the first pin shaft, the second pin shaft and the pressing rod are positioned on the same vertical plane, so that the piston hermetically matched on the filter funnel assembly is in a locking state. When the first pin shaft, the second pin shaft and the pressure rod are located on the same vertical plane, the handle assembly is just in a dead point state in the up-down rotation direction, and at the moment, acting force among the handle assembly, the pressure buffering device and the piston is distributed in the vertical plane direction, so that the handle body is not easy to rotate, and the effect of locking the piston is achieved.

in the process that a user rotates the handle body downwards, in order to more accurately and conveniently adjust the first pin shaft, the second pin shaft and the pressure lever to the same vertical plane, a first stop block is arranged at the position, close to the upper end wall of the piston cylinder, of the tail end of the handle body, and a second stop block capable of forming limit fit on the handle body on a downwards rotating path is arranged on the upper end wall of the piston cylinder; when the first pin shaft, the second pin shaft and the pressing rod are positioned on the same vertical plane, the first stop block is just abutted against the second stop block.

Compared with the prior art, the utility model has the advantages that: the utility model provides a be connected through pressure buffer between coffee machine handle subassembly and the piston, this pressure buffer sets up in the upper end of piston and can slide from top to bottom along with the piston together, wherein, push down handle subassembly drive piston at the user and move down to and filter the funnel subassembly and carry out the press fit in-process, this pressure buffer can play the effect of buffering, and then solved when the effort between piston and the filter funnel surpasss the problem that brings uncomfortable feeling when certain pressure value, user experience has greatly been improved.

Drawings

Fig. 1 is a schematic perspective view of a coffee machine according to an embodiment of the present invention;

Fig. 2 is a schematic perspective view of a coffee machine according to an embodiment of the present invention, wherein the filter funnel assembly (showing a single-cup dosage funnel and a double-cup dosage funnel, respectively) is in a drawing-out state;

FIG. 3 is an exploded view of a coffee maker according to an embodiment of the present invention;

FIG. 4 is an exploded view of the pressure buffering device and the piston of the coffee maker according to the embodiment of the present invention;

FIG. 5 is an exploded view of a piston of a coffee maker according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a coffee maker in an embodiment of the invention, wherein the brew chamber is in an open state;

FIG. 7 is a cross-sectional view of a coffee maker in an embodiment of the invention, wherein the brew chamber is in a sealed state;

FIG. 8 is a schematic view of a part of the structure of the coffee maker according to the embodiment of the present invention;

3 figure 3 9 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 a 3- 3 a 3 in 3 figure 3 8 3, 3 wherein 3 the 3 brewing 3 chamber 3 is 3 in 3 an 3 open 3 state 3; 3

3 figure 3 10 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 a 3- 3 a 3 in 3 figure 3 8 3, 3 wherein 3 the 3 brewing 3 chamber 3 is 3 in 3 a 3 sealed 3 state 3; 3

FIG. 11 is a schematic perspective view of a filter funnel assembly of a coffee maker according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of a linkage of the coffee maker according to the embodiment of the present invention;

fig. 13 is a schematic perspective view of a pressing plate of a coffee maker according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 13, a coffee machine comprises a frame 10, a brewing unit, a handle assembly 40 and a pressure buffer device 50, wherein the brewing unit is arranged at the upper part of the frame 10, specifically, the frame 10 is formed by connecting a front support frame 11 arranged at the front end and a rear support frame 12 arranged at the rear end, a gasket 14 is arranged between the front support frame 11 and the rear support frame 12, the brewing unit comprises a piston cylinder 20, a piston 21 and a filter funnel assembly 30, wherein the piston cylinder 20 is connected at the upper end of the frame 10, the piston 21 is arranged in the piston cylinder 20 in a manner of sliding up and down, the filter funnel assembly 30 is matched at one side of the frame 10 in a manner of pushing and pulling in a drawer, specifically, the upper end of the rear support frame 12 is provided with a slot 13 with an opening facing to the front, and the filter funnel assembly 30 can be; in this embodiment, the filter funnel assembly 30 comprises a brewing base 31 having an internal cavity and a filter funnel 32 attached to the lower end of the brewing base 31, the piston 21 being movable downwardly into sealing engagement with the brewing base 31 to form a brewing chamber for brewing coffee; in the present embodiment, the handle assembly 40 is drivingly connected to the pressure buffering device 50, and the pressure buffering device 50 is drivingly connected to the piston 21, specifically, the handle assembly 40 is hinged to the piston cylinder 20 and can rotate along the hinged point to drive the pressure buffering device 50 to slide up and down relative to the piston cylinder 20; more specifically, pressure buffer 50 is located the upper end of piston 21 and forms the slider that can slide together with piston 21, and the rotation of handle subassembly 40 can drive the slider and slide from top to bottom in piston barrel 20, and in this embodiment, in the user pushes down handle subassembly 40 and drives piston 21 and move down to carry out the press fit with filter funnel subassembly 30 in-process, this pressure buffer 50 can play the effect of buffering, and then has solved the problem that the effort between piston 21 and the filter funnel 32 brings uncomfortable feeling when exceeding certain pressure value.

In order to enable the handle assembly 40 to more flexibly drive the piston 21 to move up and down in the piston cylinder 20, the handle assembly 40 comprises a handle body 41 with the tail end hinged on the upper end wall of the piston cylinder 20 and a linkage 42 connected with the handle body 41, specifically, the tail end of the handle body 41 extends to form a branch part 411 arranged at an angle with the handle body 41, the starting end of the linkage 42 is hinged on the branch part 411, and the tail end of the linkage 42 is hinged on the pressure buffer device 50; the pressure buffering device 50 at least includes a movable element 51 movably connected to the upper end of the piston 21 up and down, and a pressure regulating spring 52 supported between the piston 21 and the movable element 51, wherein the pressure regulating spring 52 is located below the movable element 51 and in a compressed state, so that the movable element 51 tends to be away from the piston 21, and the movable element 51 is connected to the end of the linkage element 42. Specifically, the pressure regulating spring 52 with a suitable spring constant can be selected according to the actual pressure when the user operates the handle assembly 40 to press down, so that the user has a suitable feel when pressing. In this embodiment, when the handle body 41 rotates a certain angle, the branch 411 of the handle body 41 correspondingly rotates the same angle and generates a certain height difference in the up-down direction, wherein the starting end of the linking member 42 hinged to the branch 411 can rotate with the handle body 41 and move upward or downward a certain distance, and similarly, the end of the linking member 42 hinged to the pressure buffer device 50 also rotates relative to the pressure buffer device 50 and can drive the pressure buffer device 50 and the piston 21 to slide upward or downward along the inner wall of the piston cylinder 20, such that the handle assembly 40 has a simple structure and is convenient to assemble, and only one linking member 42 needs to be arranged to drive the piston 21 to move by rotating the handle.

In the present embodiment, the movable element 51 in the pressure buffering device 50 is a pressure rod horizontally penetrating the end of the linkage element 42, and both ends of the pressure rod are connected to the upper end of the piston 21; the upper end of the piston 21 is further provided with a containing groove 210 for placing the pressure regulating spring 52, the upper end of the pressure regulating spring 52 is supported on the pressure rod, and the lower end of the pressure regulating spring 52 is supported on the bottom of the containing groove 210. The movable element 51 of the pressure buffering device 50 is in the form of a pressure rod, which can better apply force to the piston 21 and improve the stability of the movement of the piston 21 in the piston cylinder 20. Specifically, in order to conveniently assemble the pressure buffering device 50 on the piston 21, the pressure buffering device 50 further comprises two pressing plates 53 which are pressed on the upper end of the piston 21 and correspond to the two ends of the pressing rod, an upper groove 530 is formed on the lower end surface of each pressing plate 53, a lower groove 211 corresponding to the upper groove 530 is formed on the piston 21, the upper groove 530 and the lower groove 211 cooperate to form a movable groove 60, and the pressing rod is movably arranged in the movable groove 60 up and down; more specifically, in order to make the up and down movement of the pressing rod in the movable slot 60 more stable, two accommodating slots 210 are provided, which are respectively located below the two pressing plates 53, and correspondingly, two pressure-regulating springs 52 are provided, which are respectively located in the two accommodating slots 210 and are supported against two ends of the pressing rod, as shown in fig. 10 in detail.

referring to fig. 3 and 9, the upper end wall of the piston cylinder 20 is provided with two hinge seats 23 protruding upward and arranged oppositely, the handle body 41 is rotatably connected to the two hinge seats 23 of the piston cylinder 20 through a first pin 43, the branch portion 411 of the handle body 41 is rotatably connected to the start end of the linkage member 42 through a second pin 44, correspondingly, the upper end of the linkage member 42 is provided with a first through hole 421 for the second pin 44 to pass through, the lower end of the linkage member 42 is provided with a second through hole 422 for the pressure bar to pass through, and both ends of the first pin 43 and the second pin 44 are fixed through snap springs; when the handle body 41 rotates around the axis of the first pin shaft 43 and drives the piston 21 to move downwards, the first pin shaft 43, the second pin shaft 44 and the pressure rod can be located on the same vertical plane, so that the piston 21 which is hermetically fitted on the filter funnel assembly 30 is in a locked state. Specifically, when the first pin shaft 43, the second pin shaft 44 and the pressing rod are located on the same vertical plane, the handle assembly 40 is located at the dead point state in the up-down rotation direction, and at this time, the acting force among the handle assembly 40, the pressure buffering device 50 and the piston 21 is distributed in the vertical plane direction, so that the handle body 41 is not easy to rotate, and the effect of locking the piston 21 is achieved. In order to enable a user to more accurately and conveniently adjust the first pin shaft 43, the second pin shaft 44 and the pressing rod to the same vertical plane in the process of rotating the handle body 41 downwards, the end of the handle body 41 is provided with a first stop 412 at a position close to the upper end wall of the piston cylinder 20, the upper end wall of the piston cylinder 20 is provided with a second stop 22 capable of forming limit fit on the handle body 41 in a downwards rotating path, and when the first pin shaft 43, the second pin shaft 44 and the pressing rod are located on the same vertical plane, the first stop 412 is just abutted against the second stop 22.

in this embodiment, the piston 21 includes a piston body 213 and a sealing ring 214 connected to the lower end of the piston body 213 and capable of cooperating with the filter funnel assembly 30, wherein the middle of the sealing ring 214 is further covered with a filter screen 216, and the filter screen 216 is connected to the lower end of the piston body 213 by screws, as shown in fig. 5 in detail; a water inlet channel 215 which penetrates from the upper end to the lower end is formed in the piston body 213, a one-way valve 70 which is used for controlling water flow to enter the brewing chamber from the outside is arranged in the water inlet channel 215, a water inlet joint 24 is connected to the upper end opening of the water inlet channel 215, the one-way valve 70 comprises a valve core 71 and a spring piece 72 which is supported at the bottom end of the valve core 71, and under the elastic force action of the spring piece 72, the end part of the valve core 71 can be blocked at the water outlet of the water inlet joint 24, see fig. 5 and 6; this check valve 70's setting can avoid entering into the rivers of making the room and flow backwards to the outside along inhalant canal 215, specifically, in the use, piston 21 descends and filters the sealed cooperation back of funnel subassembly 30, begins to intake in the inhalant canal, because outside water pressure is great, makes the room pressure little, and check valve 70 can open automatically and make rivers enter into making the room, prepares for making coffee next step. In addition, the filter funnel 32 is a single-cup dosage funnel with one liquid outlet 320 or a double-cup dosage funnel with two liquid outlets 320, wherein different dosages of coffee powder or coffee powder can be added into the filter funnel 32, and a user can select the single-cup dosage funnel or the double-cup dosage funnel to brew coffee with different concentrations according to the requirement of the user on the taste of the coffee, as shown in fig. 2 in detail.

the handle subassembly 40 and the piston 21 of coffee machine in this embodiment are connected through pressure buffer 50, this pressure buffer 50 sets up in the upper end of piston 21 and can slide from top to bottom along with piston 21 together, wherein, push down handle subassembly 40 drive piston 21 at the user and move down to carry out the press fit in-process with filter funnel subassembly 30, this pressure buffer 50 can play the effect of buffering, and then solved and brought the problem of uncomfortable feeling when the effort between piston 21 and the filter funnel 32 surpasss certain pressure value, user experience has greatly been improved.

Claims (10)

1. A coffee machine comprises a support (10) and a brewing unit arranged on the upper part of the support (10), wherein the brewing unit comprises a piston cylinder (20) connected onto the support (10), a piston (21) arranged in the piston cylinder (20) in a vertically sliding manner and a filter funnel assembly (30) in a drawer type in a push-pull fit mode on one side of the support (10), the filter funnel assembly (30) comprises a brewing base (31) with an inner concave cavity and a filter funnel (32) connected to the lower end of the brewing base (31), and the piston (21) can move downwards and is in sealing fit with the brewing base (31) to form a brewing chamber for brewing coffee;

The method is characterized in that: the handle assembly (40) is in driving connection with the pressure buffering device (50), and the pressure buffering device (50) is in driving connection with the piston (21);

the handle assembly (40) is hinged on the piston cylinder (20) and can rotate along the hinged point to drive the pressure buffering device (50) to slide up and down relative to the piston cylinder (20).

2. a coffee machine according to claim 1, characterized in that: the handle assembly (40) comprises a handle body (41) and a linkage piece (42), wherein the tail end of the handle body (41) is hinged on the upper end wall of the piston cylinder (20), and the linkage piece is connected with the handle body (41);

The tail end of the handle body (41) extends to form a branch part (411) which is arranged at an angle with the handle body (41), the starting end of the linkage part (42) is hinged to the branch part (411), and the tail end of the linkage part (42) is hinged to the pressure buffering device (50).

3. A coffee machine according to claim 2, characterized in that: the pressure buffering device (50) at least comprises a movable element (51) which can be movably connected to the upper end of the piston (21) up and down, and a pressure regulating spring (52) which is supported between the piston (21) and the movable element (51), wherein the pressure regulating spring (52) is positioned below the movable element (51) and is in a compressed state, so that the movable element (51) has a tendency of being far away from the piston (21);

The movable piece (51) is connected with the tail end of the linkage piece (42).

4. a coffee machine according to claim 3, characterized in that: the movable piece (51) is a pressure lever horizontally arranged at the tail end of the linkage piece (42) in a penetrating manner, and two ends of the pressure lever are connected with the upper end of the piston (21);

The upper end of piston (21) still has and is used for placing containing groove (210) of pressure regulating spring (52), the upper end top of pressure regulating spring (52) is held on the depression bar, the lower extreme top of pressure regulating spring (52) is held the tank bottom of containing groove (210).

5. a coffee machine according to claim 4, characterized in that: the pressure buffering device (50) further comprises two pressure plates (53) which are in compression joint with the upper end of the piston (21) and correspond to the two ends of the pressure rod, an upper groove (530) is formed in the lower end face of each pressure plate (53), a lower groove (211) corresponding to the upper groove (530) is formed in the piston (21), the upper groove (530) and the lower groove (211) are matched to form a movable groove (60), and the pressure rod can be movably arranged in the movable groove (60) up and down.

6. A coffee machine according to claim 5, characterized in that: the number of the accommodating grooves (210) is two, the two accommodating grooves are respectively positioned below the pressing plates (53), correspondingly, the number of the pressure regulating springs (52) is two, and the two pressure regulating springs are respectively arranged in the two accommodating grooves (210) and are supported at two ends of the pressing rod in a propping manner.

7. A coffee machine according to any one of claims 1 to 6, characterized in that: the piston (21) comprises a piston body (213) and a sealing ring (214) which is connected to the lower end of the piston body (213) and can be matched with the filter funnel component (30);

the piston body (213) is internally provided with a water inlet channel (215) which penetrates from the upper end to the lower end, and a one-way valve (70) which is used for controlling the water flow to enter the brewing chamber from the outside is arranged in the water inlet channel (215).

8. A coffee machine according to claim 7, characterized in that: the filter funnel (32) is a single-cup dosage funnel with one liquid outlet (320) or a double-cup dosage funnel with two liquid outlets (320).

9. A coffee machine according to any one of claims 4 to 6, characterized in that: the handle body (41) is rotatably connected with the upper end wall of the piston cylinder (20) through a first pin shaft (43), and a branch part (411) of the handle body (41) is rotatably connected with the starting end of the linkage part (42) through a second pin shaft (44);

When the handle body (41) rotates around the axis of the first pin shaft (43) and drives the piston (21) to move downwards, the first pin shaft (43), the second pin shaft (44) and the pressure rod are positioned on the same vertical plane, so that the piston (21) which is in sealing fit with the filter funnel assembly (30) is in a locking state.

10. A coffee machine according to claim 9, characterized in that: the tail end of the handle body (41) is provided with a first stop (412) at a position close to the upper end wall of the piston cylinder (20), and the upper end wall of the piston cylinder (20) is provided with a second stop (22) capable of forming limit fit on the handle body (41) on a downward rotating path;

When the first pin shaft (43), the second pin shaft (44) and the pressure lever are positioned on the same vertical plane, the first stop block (412) is just abutted against the second stop block (22).