A beverage extraction device

Abstract

The beverage extraction device comprises a first machine part, a side of which is provided with a hook, an upper part of the hook having a hook part extending in the front-back direction; a second machine part, which is hingedly connected to the rear end of the first machine part and can be opened or closed relative to the first machine part, a front side wall of the second machine part being provided with a strip-shaped hole extending in the front-back direction, the strip-shaped hole being provided with a locking shaft which can move in the front-back direction and can be hooked by the hook part; a driving mechanism for driving the second machine part to rotate upward and downward and driving the locking shaft to move in the front-back direction; and a limiting structure for limiting the forward movement of the locking shaft and releasing the forward movement limitation of the locking shaft when the second machine part drives the locking shaft to rotate to an intermediate position between the fully open position and the closed position, so that the beverage extraction device can reduce the processing precision requirement and cost, has higher assembly precision, and can reduce the power output of the driving mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of beverage extraction, in particular to a beverage extraction device for preparing coffee, tea and other beverages. BACKGROUND

[0002] With the continuous improvement of people's living standards, various beverage preparation equipment has emerged. Among them, the beverage preparation machine represented by the tea making machine mainly includes an extraction device, a water tank, a heating element and a water pump. When in use, a capsule containing coffee powder, tea powder or milk powder similar to a jelly bag is placed in the extraction device, and two machine parts in the extraction device are closed to form a closed brewing chamber through a driving mechanism, and hot water is injected into the capsule for extraction. After the extraction is completed, the used capsule needs to be taken out.

[0003] According to the search, a Chinese utility model patent with a patent number of ZL201020113007.1 (publication number CN201617680U) discloses a hydraulic drive type driving structure for a beverage brewing device, which includes a rear wall of a base fixed with an inner fixed seat, the inner fixed seat is provided with an axially penetrating rear water inlet channel, the second machine part is provided with a rear chamber with an open rear end, the rear chamber of the second machine part is movably sleeved on the inner fixed seat and can slide forward and backward relative to the inner fixed seat, and the outer periphery of the inner fixed seat is in liquid-tight sealing cooperation with the inner peripheral wall of the rear chamber of the second machine part, the second machine part is further provided with a liquid outlet channel communicating the outside and a recess cavity on the second machine part; the guide hole of the mounting part is provided with an inner shoulder, the guide column is further sleeved with a return spring, one end of the return spring abuts against the front wall of the base, and the other end of the return spring abuts against the inner shoulder in the guide hole, and the first machine part is provided with a front water inlet channel communicating the brewing space and the outside. The above-mentioned hydraulic drive type driving structure locks the two machine parts by water pressure. Since the hydraulic piston structure must be matched with an electromagnetic valve and other pressure relief waterways, the production cost of the beverage extraction device is relatively high. SUMMARY

[0004] The first technical problem to be solved by the present application is to provide a beverage extraction device capable of reducing production cost in view of the above technical status.

[0005] The second technical problem to be solved by the present application is to provide a beverage extraction device with higher assembly precision and capable of reducing the power output of the driving mechanism in view of the above technical status.

[0006] The technical scheme adopted by the present application to solve the above technical problems is as follows: a beverage extraction device, characterized in that it comprises

[0007] a first machine part, a side part of which is provided with a clamping hook, an upper part of the clamping hook being provided with a hook part extending in the front-rear direction;

[0008] a second member hingedly connected to the rear end of the first member in a manner that the second member can rotate up and down, the front side wall of the second member being provided with a strip-shaped hole extending in front and back directions, and a locking shaft being movably arranged in the strip-shaped hole and capable of being hooked by the hook portion;

[0009] a driving mechanism for driving the second member to rotate up and down and the locking shaft to move forward and backward;

[0010] a limiting structure for limiting the forward movement of the locking shaft;

[0011] the second member has a fully open position, an intermediate position and a folded position during rotation;

[0012] when the second member is in the fully open position, the driving mechanism and the limiting structure cooperate to position the locking shaft at the rear end of the strip-shaped hole and separate from the hook portion,

[0013] when the second member is rotated to the intermediate position, the limiting structure can act to release the forward movement restriction of the locking shaft, so that the driving mechanism can drive the locking shaft to move forward in the strip-shaped hole to enter the hook portion,

[0014] when the second member is in the folded position, the driving mechanism positions the locking shaft at the front end of the strip-shaped hole and is hooked by the hook portion to limit the locking shaft from moving upward away from the first member, thereby locking the relative folded state of the first member and the second member.

[0015] The up-and-down direction refers to the height direction of the second member, and the front-and-back direction refers to the length direction of the second member.

[0016] In order to further shorten the forward movement stroke of the locking shaft after being released, the included angle between the second member and the first member in the intermediate position is less than or equal to 20°.

[0017] Further design, the bottom wall of the second member is provided with a through hole, and the limiting structure comprises

[0018] a limiting block movably arranged in front of the locking shaft, the limiting block comprising a main body portion and a rod portion extending downward from the lower edge of the main body portion, the rod portion being arranged in the through hole, and when the rod portion is separated from the first member, the rear end of the main body portion abuts against the locking shaft, and when the lower end of the rod portion contacts the first member, the limiting block can move upward to dislocate the rear end of the main body portion from the locking shaft, thereby releasing the forward movement restriction of the locking shaft;

[0019] The elastic member makes the limiting block always have a tendency to move downward and close to the first machine element. The forward movement of the limiting block is triggered by the contact between the first machine element and the limiting block, and the forward movement of the limiting block is achieved by the upward action of the limiting block, so that the forward movement of the limiting block to the locking shaft is limited, and the structure of the beverage extraction device is simpler without the need to additionally set a structure for driving the action of the limiting block, and the limiting block can accurately respond to the relative position of the first machine element and the second machine element, so that the assembly precision of the beverage extraction device is higher.

[0020] In order to facilitate the installation of the limiting block and the elastic member, the limiting structure further comprises a mounting plate fixed above the second machine element, a first accommodation space is formed between the lower surface of the mounting plate and the bottom wall of the second machine element, the main body part is accommodated in the first accommodation space, and a second accommodation space for accommodating the locking shaft is further formed between the lower surface of the main body part and the bottom wall of the second machine element; a slot is formed in the top of the main body part, a plug-in column is arranged at the bottom of the mounting plate and inserted into the slot, and the elastic member is a spring sleeved on the plug-in column. When the limiting block moves upward, the second accommodation space is formed with the second machine element, at this time, the locking shaft can move forward to be accommodated in the second accommodation space and positioned in the front end of the strip-shaped hole, and the locking shaft is also hooked by the hooking part.

[0021] In order to facilitate the locking shaft to be misaligned with the limiting block after contacting the rear surface of the hooking part, a first inclined surface gradually inclined forward from top to bottom is arranged at the rear lower side of the main body part, and / or a second inclined surface gradually inclined forward from top to bottom is arranged at the rear surface of the hooking part. The first inclined surface and / or the second inclined surface can guide the locking shaft to move forward.

[0022] In order to make the driving mechanism simpler, the driving mechanism comprises a handle rotatably connected to the second machine element up and down, and a transmission structure arranged between the handle and the locking shaft, which is used to convert the up and down rotation of the handle into the forward and backward movement of the locking shaft.

[0023] Further design, the transmission structure comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is rotatably connected to the lower side of the handle through a horizontally arranged first transmission shaft, the other end of the first connecting rod, one end of the second connecting rod and one end of the third connecting rod are rotatably connected through a horizontally arranged second transmission shaft, the other end of the second connecting rod is rotatably connected to the rear of the second machine element through a horizontally arranged third transmission shaft, and the other end of the third connecting rod is rotatably connected with the locking shaft.

[0024] In order to prevent the locking shaft from being easily pulled out of the hook portion, when the second mechanism is in the closing position, the line connecting the locking shaft and the third transmission shaft is above the second transmission shaft. When the second mechanism is in the closing position, the locking shaft is hooked by the hook portion, the second connecting rod exerts an upward force on the locking shaft, and the hook portion can limit the upward movement of the locking shaft, so that the locking shaft can be stably in the hook portion and is not easily pulled out of the hook portion. If the line connecting the locking shaft and the third transmission shaft is below the second transmission shaft, the length of the hook portion in the front-back direction is also elongated, which can prevent the locking shaft from being easily pulled out of the hook portion. However, if the length of the hook portion in the front-back direction is too long, the forward movement stroke of the locking shaft will be too long, which not only requires the driving mechanism to output more power, but also affects the accuracy of the locking shaft entering the hook portion, and requires higher assembly precision of the beverage extraction device.

[0025] In order to make the locking effect on both sides of the second mechanism more firm and balanced, the second mechanism is provided with a strip-shaped hole on each side, the first mechanism is provided with a hook on each side, the two ends of the locking shaft respectively pass through the corresponding strip-shaped hole and are connected with the corresponding hook portion, and each group of transmission structure is arranged close to the corresponding side wall of the second mechanism.

[0026] In order to prevent the locking shaft from being easily pulled out of the hook portion, an arc-shaped area is arranged on the lower surface of the hook portion, which is arched upward and used for cooperating with the top of the locking shaft. The arc-shaped area can position the locking shaft, so that the locking shaft is not easily pulled out of the hook portion.

[0027] Compared with the prior art, the beverage extraction device has the following advantages. The locking shaft is hooked by the hook portion to limit the upward movement of the locking shaft, so as to lock the relative closing state of the first mechanism and the second mechanism, which can reduce the production cost of the beverage extraction device. The forward movement of the locking shaft is limited by the limiting structure when the second mechanism rotates to the intermediate position, so that the locking shaft can move forward in the strip-shaped hole to enter the hook portion only after being unlocked, which can reduce the forward movement stroke of the locking shaft during the rotation of the second mechanism, facilitate more accurate control of the trajectory of the locking shaft to ensure that the locking shaft accurately enters the hook portion during the rotation of the second mechanism, realize effective locking of the relative closing of the first mechanism and the second mechanism, and improve the assembly precision of the beverage extraction device. In addition, the locking shaft is not prone to failure when the first mechanism and the second mechanism are relatively closed. Furthermore, the limiting structure has a segmented action, which can reduce the resistance in the later stage of the downward rotation of the second mechanism and increase the power in the later stage of the upward rotation, so as to reduce the power output by the driving mechanism. If the driving mechanism is an automatic device, the energy consumption can be effectively saved. If the driving mechanism is a manual device, the user can operate more labor-savingly. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a right view of an embodiment of the present application (the second member is in the fully open position);

[0029] Figure 2 is a perspective view of an embodiment of the present application (the second member is in the intermediate position);

[0030] Figure 3 is a longitudinal sectional view of Figure 2 ;

[0031] Figure 4 is a right view of an embodiment of the present application (the second member is in the fully closed position);

[0032] Figure 5 is a longitudinal sectional view of Figure 4 ;

[0033] Figure 6 is a perspective exploded view of an embodiment of the present application;

[0034] Figure 7 is a perspective view of a limiting block in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following provides a further detailed description of an embodiment of the present application.

[0036] As shown in FIG. 1, this is the best embodiment of the present application. The up-down direction in this embodiment refers to the height direction of the second member 2, the front-back direction refers to the length direction of the second member 2, and the left-right direction refers to the width direction of the second member 2. Figures 1-7

[0037] The beverage extraction device in this embodiment includes a first member 1, a second member 2, a driving mechanism, and a limiting structure. The second member 2 is hingedly connected to the rear end of the first member 1 so as to be able to open or close relative to the first member 1 (see FIGS. 2, 3, and 4). Specifically, the rear end of the second member 2 and the rear end of the first member 1 are hingedly connected by a first hinge shaft 91 arranged in the left-right direction (see FIG. 5). Figure 1 Figure 2 Figure 4 Each of the clamping hooks 3 has a hook portion 31 extending in the front-back direction (see FIG. 6). The front portion of the second member 2 has a pair of strip-shaped holes 21 extending in the front-back direction, and a locking shaft 20 passes through both strip-shaped holes 21 (see FIG. 7). The locking shaft 20 is movable in the front-back direction in the strip-shaped holes 21 and can be hooked by the hook portion 31 (see FIG. 8). Figure 2 Figure 1 Figure 1 Figure 4 ​​​​​​), thereby being able to lock the relative closing state of the first component 1 and the second component 2. Compared with hydraulic driving, the locking of the relative closing state of the first component 1 and the second component 2 is achieved by the cooperation of the locking shaft 20 and the hook portion 31, which is able to simplify the structure of the device, thereby reducing the production cost of the beverage extraction device. The driving mechanism is used to drive the up-and-down rotation of the second component 2 and the back-and-forth movement of the locking shaft 20. The limiting structure is used to limit the forward movement of the locking shaft 20.

[0038] In the embodiment, the second component 2 has a fully open position, an intermediate position and a closing position during rotation: when the second component 2 is in the fully open position, the cooperative action of the driving mechanism and the limiting structure positions the locking shaft 20 at the rear end of the strip-shaped hole 21 and separates the locking shaft 20 from the hook portion 31 (see Figure 1 ); when the second component 2 is rotated to the intermediate position, the limiting structure is able to act to release the forward movement limitation of the locking shaft 20, thereby enabling the driving mechanism to drive the locking shaft 20 to move forward in the strip-shaped hole 21 to enter the hook portion 31 (see Figure 2 ); when the second component 2 is in the closing position, the driving mechanism positions the locking shaft 20 at the front end of the strip-shaped hole 21 and hooks the locking shaft 20 with the hook portion 31, so as to limit the upward movement of the locking shaft 20 away from the first component 1, thereby locking the relative closing state of the first component 1 and the second component 2 (see Figure 4 ).

[0039] In the embodiment, the beverage extraction device hooks the locking shaft 20 with the hook portion 31 to limit the upward movement of the locking shaft 20 away from the first component 1, thereby locking the relative closing state of the first component 1 and the second component 2, which is able to reduce the precision requirement of the machining of the driving mechanism, thereby reducing the production cost of the beverage extraction device. In addition, the limiting structure is able to act to release the forward movement limitation of the locking shaft 20 when the second component 2 is rotated to the intermediate position, so that the locking shaft 20 is able to move forward in the strip-shaped hole 21 to enter the hook portion 31 only after being released, thereby being able to reduce the forward movement stroke of the locking shaft 20 during the rotation of the second component 2, which is able to facilitate more accurate control of the trajectory of the locking shaft 20 to ensure that the locking shaft 20 accurately enters the hook portion 31 during the rotation of the second component 2, thereby achieving effective locking of the relative closing of the first component 1 and the second component 2, making the beverage extraction device have higher cooperation precision, and the first component 1 and the second component 2 are not prone to malfunction when being relatively closed. In addition, the limiting structure with such segmented action is able to reduce resistance in the later stage of the downward rotation of the second component 2 and increase power in the later stage of the upward rotation, thereby being able to reduce the output power of the driving mechanism.

[0040] In order to further shorten the forward movement stroke of the locking shaft 20 after being released, the included angle between the second component 2 and the first component 1 at the intermediate position is less than or equal to 20°.

[0041] A through hole 22 is formed in the bottom wall of the second member 2, and the limiting structure comprises a limiting block 4, an elastic member 5 and a mounting plate 6 (see Figure 6 ). The limiting block 4 is movably arranged in front of the locking shaft 20 (see Figure 2 ); specifically, the mounting plate 6 is fixed above the second member 2, and a first accommodating space X is formed between the lower surface of the mounting plate 6 and the bottom wall of the second member 2, the limiting block 4 comprises a main body part 41 and a rod part 42 extending downward from the lower edge of the main body part 41, the main body part 41 is accommodated in the first accommodating space X and can abut against the locking shaft 20, and the rod part 42 is arranged in the through hole 22 (see Figure 3 ). A second accommodating space Y for accommodating the locking shaft 20 is also formed between the lower surface of the main body part 41 and the bottom wall of the second member 2 (see Figure 5 ). When the rod part 42 is separated from the first member 1, the main body part 41 abuts against the locking shaft 20, and when the lower end of the rod part 42 contacts the first member 1, the limiting block 4 can move upward to disengage the main body part 41 from the locking shaft 20 and form the second accommodating space Y (see Figure 5 ), thereby releasing the limitation on the locking shaft 20 (see Figure 3 and Figure 5 ). The upper surface of the main body part 41 is provided with a slot 412 (see Figure 7 ), the bottom of the mounting plate 6 is provided with a plug-in column 61 inserted into the slot 412, and the elastic member 5 is a spring which is sleeved on the plug-in column 61 and always has a downward moving tendency to approach the first member 1 (see Figure 3 ). The lower side of the rear part of the main body part 41 is provided with a first inclined surface 411 gradually inclined forward from top to bottom (see Figure 3 and Figure 5 ), which can guide the locking shaft 20 to move forward and the limiting block 4 to move upward to disengage the two.

[0042] As shown in Figure 3As shown, the drive mechanism includes a handle 7 that is rotatably hinged to the second component 2, and a transmission structure disposed between the handle 7 and the locking shaft 20. This transmission structure is used to convert the up-and-down rotation of the handle 7 into the back-and-forth movement of the locking shaft 20. The drive mechanism in this embodiment is a manual drive mechanism. Due to the setting of the limiting structure, it is easier for the user to manually operate the handle 7. Specifically, the handle 7 is hinged to the second component 2 via a second rotating shaft arranged in the left-right direction. The transmission structure includes a first connecting rod 81, a second connecting rod 82, and a third connecting rod 83. One end of the first connecting rod 81 is hinged to the lower side of the handle 7 via a first transmission shaft 84 arranged in the left-right direction. The other end of the first connecting rod 81, one end of the second connecting rod 82, and one end of the third connecting rod 83 are hinged via a second transmission shaft 85 arranged in the left-right direction. The other end of the second connecting rod 82 is hinged to the rear of the second component 2 via a third transmission shaft 86 arranged in the left-right direction. The other end of the third connecting rod 83 is rotatably connected to the locking shaft 20. The first drive shaft 84, the second drive shaft 85, and the third drive shaft 86 can be independent components or integrated into one of the two hinged components.

[0043] like Figure 5 As shown, when the second component 2 is in the closed position, the line connecting the locking shaft 20 and the third drive shaft 86 is located above the second drive shaft 85. When the locking shaft 20 is hooked by the hook 31, the second connecting rod 82 applies an upward force to the locking shaft 20, and the hook 31 can restrict the upward movement of the locking shaft 20, thereby making the locking shaft 20 stable in the hook 31 and not easy to disengage from the hook 31. If the line connecting the locking shaft 20 and the third drive shaft 86 is located below the second drive shaft 85, the effect of making the locking shaft 20 difficult to disengage from the hook 31 can also be achieved by extending the length of the hook 31 in the front-back direction. However, if the length of the hook 31 in the front-back direction is too long, the forward travel of the locking shaft 20 will be too long, which will not only require the drive mechanism to output more power, but also affect the accuracy of the locking shaft 20 entering the hook 31, and require higher assembly precision for the beverage extraction device.

[0044] like Figure 6 As shown, the lower rear surface of the hook portion 31 is provided with a second inclined surface 311 that gradually slopes forward from top to bottom. This second inclined surface 311 can guide the locking shaft 20 into the hook portion 31. The lower surface of the hook portion 31 is provided with an arc-shaped region 312, which arches upward and is used to engage with the top of the locking shaft 20, thereby positioning the locking shaft 20 and making it difficult for the locking shaft 20 to disengage from the hook portion 31.

Claims

1. A beverage extraction device, characterized in that, The application relates to a folding mechanism for a folding device, comprising a first member (1) provided with a hook (3) having a hook portion (31) extending in the front-rear direction at the upper portion of the hook (3); a second member (2) hingedly connected to the rear end of the first member (1) and capable of rotating up and down, the front side wall of the second member (2) being provided with a strip-shaped hole (21) extending in the front-rear direction, and a locking shaft (20) capable of moving forward and backward and being hooked by the hook portion (31) being arranged in the strip-shaped hole (21); a driving mechanism for driving the second member (2) to rotate up and down and the locking shaft (20) to move forward and backward; a limiting structure for limiting the forward movement of the locking shaft (20); the second member (2) has a fully opened position, an intermediate position and a folded position during rotation, when the second member (2) is in the fully opened position, the driving mechanism and the limiting structure cooperatively position the locking shaft (20) at the rear end of the strip-shaped hole (21) and separate the locking shaft (20) from the hook portion (31), when the second member (2) is rotated to the intermediate position, the limiting structure can act to release the forward movement limitation of the locking shaft (20), so that the driving mechanism can drive the locking shaft (20) to move forward in the strip-shaped hole (21) to enter the hook portion (31), when the second member (2) is in the folded position, the driving mechanism positions the locking shaft (20) at the front end of the strip-shaped hole (21) and hooks the locking shaft (20) by the hook portion (31), so as to limit the upward movement of the locking shaft (20) away from the first member (1) and lock the relative folded state of the first member (1) and the second member (2).

2. Beverage extraction device according to claim 1, characterized in that The included angle between the second member (2) and the first member (1) in the intermediate position is less than or equal to 20 degrees.

3. The beverage extraction device according to claim 1, characterized in that The bottom wall of the second member (2) is provided with a through hole (22), and the limiting structure comprises a limiting block (4) movably arranged in front of the locking shaft (20), the limiting block (4) comprising a main body portion (41) and a rod portion (42) extending downward from the lower edge of the main body portion (41), the rod portion (42) being arranged in the through hole (22), and when the rod portion (42) is separated from the first member (1), the rear end of the main body portion (41) abuts against the locking shaft (20), and when the lower end of the rod portion (42) contacts the first member (1), the limiting block (4) can move upward to dislocate the rear end of the main body portion (41) from the locking shaft (20), so as to release the forward movement limitation of the locking shaft (20); and an elastic member (5) enabling the limiting block (4) to always have a tendency to move downward and approach the first member (1).

4. A beverage extraction device according to claim 3, characterised in that The limiting structure further comprises a mounting plate (6) fixed above the second machine element (2), a first accommodating space (X) is formed between the lower surface of the mounting plate (6) and the bottom wall of the second machine element (2), the main body (41) is accommodated in the first accommodating space (X), and a second accommodating space (Y) for accommodating the locking shaft (20) is further formed between the lower surface of the main body (41) and the bottom wall of the second machine element (2); a slot (412) is formed in the top of the main body (41), the bottom of the mounting plate (6) is provided with a plug-in column (61) plugged into the slot (412), and the elastic member (5) is a spring sleeved on the plug-in column (61).

5. The beverage extraction device according to claim 3, characterized in that The lower side of the rear part of the main body (41) is provided with a first inclined surface (411) gradually inclined forward from top to bottom, and / or the lower side of the rear surface of the hook part (31) is provided with a second inclined surface (311) gradually inclined forward from top to bottom.

6. The beverage extraction device according to claim 1, characterized in that The driving mechanism comprises a handle (7) rotatably connected to the second machine element (2) up and down, and a transmission structure arranged between the handle (7) and the locking shaft (20), which is used for converting the up and down rotation of the handle (7) into the forward and backward movement of the locking shaft (20).

7. A beverage extraction device according to claim 6, characterised in that The transmission structure comprises a first connecting rod (81), a second connecting rod (82) and a third connecting rod (83), one end of the first connecting rod (81) is hingedly connected to the lower side of the handle (7) through a horizontally arranged first transmission shaft (84), the other end of the first connecting rod (81), one end of the second connecting rod (82) and one end of the third connecting rod (83) are hingedly connected through a horizontally arranged second transmission shaft (85), the other end of the second connecting rod (82) is hingedly connected to the rear part of the second machine element (2) through a horizontally arranged third transmission shaft (86), and the other end of the third connecting rod (83) is rotatably connected with the locking shaft (20).

8. A beverage extraction device according to claim 7, characterised in that, When the second machine element (2) is located at the folding position, the connecting line of the locking shaft (20) and the third transmission shaft (86) is located above the second transmission shaft (85).

9. The beverage extraction device according to claim 6, characterized in that Each side of the second machine element (2) is provided with a strip-shaped hole (21), each side of the first machine element (1) is provided with a hook (3), and the two ends of the locking shaft (20) respectively pass through the corresponding strip-shaped hole (21) and are connected with the corresponding hook part (31).

10. A beverage extraction device according to any one of claims 1 to 9, characterized in that, The lower surface of the hook part (31) is provided with an arc-shaped area (312) which is arched upward and used for cooperating with the top of the locking shaft (20).

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