Coffee machine reliable in operation

Abstract

The coffee machine comprises a machine body and a machine cover, the machine cover comprises an upper cover body and a lower cover body which are arranged around a rotating axis, a lock rod is movably arranged on the lower cover body, the lock rod is provided with a locking part, and a joint part matched with the locking part is arranged on the machine body; a water supply channel is integrated in the machine cover, the water inlet end of the water supply channel communicates with the machine body, the water outlet end of the water supply channel communicates with the extraction cavity, and a one-way valve is arranged on a water supply path; a transmission shaft is arranged on the upper cover body, a guide groove is formed in the lock rod, an unlocking stroke and a linkage stroke are sequentially defined by the opening rotation track of the upper cover body through the extending path of the guide groove, in the unlocking stroke, the movement of the transmission shaft in the guide groove drives the locking part to be separated from the joint part, and the upper cover body rotates relative to the lower cover body; in the linkage stroke, the transmission shaft is matched with the tail end of the guide groove so as to pull the lower cover body to synchronously rotate along with the upper cover body, and the one-way valve closes the water inlet end.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to a coffee machine with reliable operation and an operation method thereof. BACKGROUND

[0002] Beverage preparation devices such as capsule coffee machines are usually provided with an extraction chamber for holding a coffee capsule. To facilitate the placement and removal of the capsule, the extraction chamber is usually provided with a hinged lid that can be opened and closed. To ensure that the extraction process is carried out in a high-pressure, closed environment, the lid needs to be reliably locked when closed. In addition, modern capsule coffee machines usually need to guide a water supply line into the lid for injecting hot water into the capsule to complete the extraction, which increases the complexity of the internal structure of the lid.

[0003] Traditional lid locking structures mostly use simple buckle-type locking. When unlocking, the user needs to press the unlocking button provided on the machine body first, and then manually open the lid after the lock is released. This operation requires two hands, and for lids that have integrated water lines, the problem of single-handed operation is more prominent, because the user may also need to consider the action of holding a cup.

[0004] To solve the problem of two-handed operation, an improved solution exists in the prior art, which is to install a torsion spring at the hinge of the lid to achieve automatic lifting of the lid after pressing the button. However, this structure has obvious defects: first, the impact force of automatic lifting can easily cause the water line interface to loosen or the seal to fail over time, causing a risk of water leakage, especially for lids that have integrated water line joints and sealing rings inside; second, the torsion spring itself has a fatigue risk, which can cause the spring force to decay and result in the lid opening with little force. More importantly, neither the buckle nor the torsion spring structure can well solve the problem of how to provide a smooth, reliable, and effective opening and closing experience for users under the premise of integrating water lines.

[0005] Therefore, there is an urgent need in the art for a new type of coffee machine locking structure, which is particularly suitable for lids that have integrated water line systems, can achieve convenient and reliable single-handed operation, and at the same time ensure smooth opening and closing of the lid to protect the internal water line components and ensure long-term sealing reliability. SUMMARY

[0006] In view of the deficiencies in the prior art, the purpose of the present application is to provide a coffee machine with reliable operation.

[0007] The above technical purpose of the present application is achieved by the following technical solution: a coffee machine with reliable operation, comprising: a machine body and a machine cover rotatably arranged on the machine body, the machine cover comprising an upper cover body and a lower cover body arranged around a rotation axis, the lower cover body being closed with the machine body and jointly enclosing an extraction chamber, The lower cover body is movably provided with a lock rod having a locking portion, and the machine body is provided with an engaging portion matched with the locking portion; The machine cover is internally integrated with a water supply channel, the water inlet end of the water supply channel is communicated with the machine body, the water outlet end of the water supply channel is communicated with the extraction cavity, and a one-way valve is arranged on the water supply path, which is configured to block the water inlet end in response to the opening operation of the lower cover body; The upper cover body is provided with a transmission shaft, the lock rod is provided with a guide groove for the transmission shaft, and the opening rotation track of the upper cover body is sequentially defined by the extension path of the guide groove to define an unlocking stroke and a linkage stroke. In the unlocking stroke, the movement of the transmission shaft in the guide groove drives the locking portion to separate from the engaging portion, and the upper cover body rotates relative to the lower cover body. In the linkage stroke, the transmission shaft cooperates with the end of the guide groove to pull the lower cover body to rotate synchronously with the upper cover body, and the one-way valve closes the water inlet end.

[0008] Further, on the closing rotation track of the machine cover, the cooperation of the transmission shaft and the guide groove sequentially defines a reset stroke and a locking stroke; In the reset stroke, the upper cover body rotates relative to the machine body, and through the cooperation of the transmission shaft and the end of the guide groove, the lower cover body is pulled to rotate synchronously to a preparatory position flush with the surface of the machine body; In the locking stroke, the upper cover body continues to rotate relative to the lower cover body, the movement of the transmission shaft in the guide groove drives the locking portion to engage with the engaging portion, completes the locking, and the one-way valve abuts against the machine body and opens the water inlet end.

[0009] Further, the lower cover body is provided with a mounting cavity for accommodating the lock rod, the lock rod is constrained to slide relative to the direction close to or away from the engaging portion, and the guide groove is obliquely arranged relative to the sliding direction.

[0010] Further, the end of the guide groove defines an initial slot, in the locked state where the locking portion cooperates with the engaging portion, the transmission shaft is received and positioned in the initial slot; and the lower cover body is provided with a power spring abutting against the lock rod, the power spring is arranged in the unlocking direction of the lock rod, and the initial slot is abutted against the transmission shaft.

[0011] Further, the lower cover body is provided with an elastically movable positioning column, the lock rod is provided with a positioning slot opening towards the engaging portion, the positioning column has a second outer wall larger than the opening of the positioning slot, and the positioning column abuts against the positioning slot at least in the reset stroke of the lower cover body to prevent the locking portion from cooperating with the engaging portion. The body abuts against the positioning column at the end of the reset stroke of the lower cover body, and drives the positioning column away from the positioning groove, so as to allow the locking part to cooperate with the engaging part.

[0012] Further, the machine cover is provided with a rotating seat arranged around a rotating axis, and the machine body is provided with a supporting seat matched with the rotating seat, one of the rotating seat and the supporting seat is provided with a damping block, and the other of the rotating seat and the supporting seat is provided with a first profiling surface arranged along a rotating track, the first profiling surface abuts against the damping block in the rotating track, and the first profiling surface is arranged along an opening rotating track.

[0013] Further, the first profiling surface comprises a first matching section and a second matching section arranged in an extension direction of the rotating opening direction, the first matching section is arranged on the lower cover body, and the second matching section is arranged on the upper cover body, and the second matching section has an outer diameter greater than that of the first matching section.

[0014] Further, a guide surface is arranged between the first matching section and the second matching section, and the guide surface is arranged as a damping recess matched with an end portion of the damping block on the rotating opening direction side.

[0015] Further, the damping block comprises an abutting portion matched with the first profiling surface and a supporting portion abutting against an inner wall of the supporting seat away from the machine cover, the abutting portion is arranged through the supporting seat and is matched with the rotating seat, the machine body is further provided with a mounting seat supported by the damping block, the supporting seat is matched with the mounting seat and is arranged as a limiting wall enclosing a profile side of the supporting portion, and the supporting portion is kept in a state of abutting and being limited from deforming and is fixed.

[0016] Further, an internal portion of the lower cover body is provided with a water channel, the water channel is provided with a water channel cover, a sealing ring is arranged between the water channel and the water channel cover, and the water channel and the water channel cover are closed and arranged as a water supply channel.

[0017] Compared with the prior art, the present application has the following advantages and beneficial effects: The present application innovatively divides the machine cover into upper and lower cover bodies which can rotate relative to each other, and uses the cooperation of the transmission shaft and the inclined guide groove to divide the single flip cover action into a continuous and automatic process of "unlocking first and then opening linkage" or "resetting first and then locking", thereby realizing true "one-way operation with one hand", that is, all steps can be completed by only lifting or pressing the upper cover body, and the independent unlocking button is completely eliminated, and the operation process is greatly simplified and intuitive.

[0018] More importantly, the present application realizes high coordination among mechanical locking, built-in water channel and damping buffer, and systematically improves the reliability and user experience of the coffee machine. Operation and sealing coordination: the unique "two-stage" opening and closing action perfectly matches the one-way valve in the built-in waterway. When opening the cover, the locking mechanism first releases the restraint on the lower cover body, and then the lower cover body is linked to open, during which the one-way valve has responded and closed, ensuring that the water is effectively blocked before the physical connection of the waterway is disconnected, fundamentally reducing the risk of water leakage. When closing the cover, the lower cover body is first accurately reset, and then finally locked, providing protection for the reliable opening and sealing of the one-way valve.

[0019] Action and protection coordination: the introduction of the damping structure and the precise matching with the opening and closing stroke make the flip cover movement smooth and gentle. This not only improves the high-end feel, but more importantly, it avoids the impact and wear of the flip cover on the internal precise waterway interface and sealing elements caused by rapid opening and closing, greatly improving the long-term service life and reliability of the integrated waterway system.

[0020] Function and safety coordination: the anti-misoperation mechanism (such as the positioning column and the positioning groove) as a second safety, ensures that the locking rod can only be locked when the cover is completely closed in place, preventing "false locking" or interference, further improving the reliability of "closed and locked, locked and sealed".

[0021] In summary, the present application provides an innovative coffee machine solution that is extremely convenient to operate, reliable to lock, safe to seal and long in service life, effectively solving the many pain points of existing technology such as complicated operation, water leakage, impact damage risk and the like. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a sectional view of the overall structure of the present application; Figure 3 is a schematic diagram of the internal structure of the present application; Figure 4 is a schematic diagram of the Figure 3 is an enlarged view of point C in the present application; Figure 5 is a schematic diagram of the bottom structure of the cover of the present application; Figure 6 is a sectional view at the locking rod in the closed position of the present application; Figure 7 is a sectional view at the locking rod in the unlocked position of the present application; Figure 8 is a sectional view at the locking rod in the open position of the present application; Figure 9 is a sectional view at the positioning column in the closed position of the present application; Figure 10 is a sectional view at the positioning column in the unlocked position of the present application; Figure 11 Sectional view at the positioning post in the open position of the present application; Figure 12 Sectional view at the auxiliary spring in the closed position of the present application; Figure 13 Sectional view at the auxiliary spring in the open position of the present application; Figure 14 Exploded schematic view of the machine cover of the present application; Figure 15 Exploded schematic view of the machine cover of the present application from another angle; Figure 16 Structure schematic view of the machine body and damping block of the present application; Figure 2 Enlarged view at A in the machine body of the present application; Figure 17 Structure schematic view of the machine body and damping block of the present application; Figure 18 Exploded schematic view of the mounting seat of the present application; Figure 19 Schematic view of the cooperation between the mounting seat and the machine cover of the present application; Figure 20 Structure schematic view of the machine cover of the present application; Figure 2 Enlarged view at B in the machine cover of the present application; In the figure: 1, machine body; 1.1, joint part; 1.2, supporting seat; 1.3, guiding seat; 1.4, water supply end; 1.5, water passing plug; 1.6, abutting part; 2, machine cover; 2.1, upper cover body; 2.11, transmission shaft; 2.12, upper rotating seat; 2.2, lower cover body; 2.21, containing seat; 2.22, guiding track; 2.23, guiding post; 2.24, lower rotating seat; 2.25, positioning seat; 2.3, rotating seat; 2.31, first cooperation section; 2.32, second cooperation section; 2.33, guiding surface; 2.4, first profiled surface; 2.5, auxiliary seat; 3, extraction cavity; 4, locking rod; 4.1, locking part; 4.2, guiding groove; 4.21, initial slot; 4.3, positioning groove; 4.4, sliding groove; 5, auxiliary spring; 6, water supply channel; 6.1, water outlet end; 6.2, water inlet end; 6.21, water inlet seat; 6.22, valve seat; 6.3, one-way valve; 6.31, valve core; 6.32, abutting spring; 6.4, water path groove; 6.5, water channel cover; 6.6, sealing ring; 7, positioning column; 7.1, first outer wall; 7.2, second outer wall; 7.3, limiting spring; 8, damping block; 8.1, abutting portion; 8.2, supporting portion; 8.3, second profiling surface; 9, first mounting shell; 9.1, linear rib; 10, mounting seat; 10.1, positioning portion; 11, water tank; 12, heating cavity; 13, water supply pump; 14, rotating shaft; DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] It should be understood that although the terms upper, middle, lower, top end, one end, etc. appear in the text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for the purpose of understanding, and are not used to define any directional or sequential limitation.

[0025] As shown in Figures 1-13 , a reliable coffee machine comprises: The machine body 1 and the cover 2 rotatably arranged on the machine body 1 are provided with a rotating shaft 14 defining the rotating axis of the machine body 1 and the cover 2. The cover 2 comprises an upper cover body 2.1 and a lower cover body 2.2 arranged around the rotating axis, i.e. the upper cover body 2.1 and the lower cover body 2.2 are rotatably connected to the machine body 1 through the rotating shaft 14. The upper cover body 2.1 is a hand-held operating part for the user, and the lower cover body 2.2 is closed with the machine body 1 to jointly form an extraction cavity 3.

[0026] As shown in Figure 2 , and the inside of the cover 2 is integrated with a water supply channel 6. The water inlet end 6.2 of the water supply channel 6 is communicated to the machine body 1, and the machine body 1 is provided with a water supply end 1.4 opposite to the water inlet end 6.2. The water outlet end 6.1 of the water supply channel 6 is communicated to the extraction cavity 3, and a one-way valve 6.3 is arranged on the water supply path. The one-way valve 6.3 is configured to block the water inlet end 6.2 in response to the opening operation of the lower cover body 2.2. In the closed position of the cover 2, the water inlet end 6.2 is butted against the water supply end 1.4 to communicate the water path; As shown in Figures 2 to 5As shown, in order to realize the locking between the machine cover 2 in the closed position and the machine body 1, the lower cover body 2.2 is movably provided with a locking rod 4, one end of the locking rod 4 is provided with a locking portion 4.1, the machine body 1 is provided with an engaging portion 1.1 matched with the locking portion 4.1, the locking rod 4 can be slid to match the engaging portion 1.1 with the locking portion 4.1 to the locking position, so as to keep the lower cover body 2.2 in the closed position on the machine body 1, when the locking rod 4 is slid away from the engaging portion 1.1 to the unlocking position, at this time the lower cover body 2.2 can be rotated to the open position relative to the machine body 1, thereby releasing the extraction cavity 3; Further combining Figures 6 to 8 As shown, the upper cover body 2.1 is provided with a transmission shaft 2.11, the other end of the locking rod 4 is provided with a guide groove 4.2 for the transmission shaft 2.11, the upper cover body 2.1 as a handheld operating part is configured with a rotating opening rotation track and a closing rotation track, in the closed position of the machine cover 2, the opening rotation track of the upper cover body 2.1 is sequentially defined with an unlocking stroke and a linkage stroke through the extension path of the guide groove 4.2, the user operates the upper cover body 2.1 to rotate upward to execute the opening track, in the unlocking stroke, the transmission shaft 2.11 slides in the opening track in the guide groove 4.2 and abuts against the guide groove 4.2, the movement of the transmission shaft 2.11 in the guide groove 4.2 drives the locking portion 4.1 to separate from the engaging portion 1.1 to the unlocking position, at this time the transmission shaft 2.11 slides to the end of the guide groove 4.2, the lower cover body 2.2 is unlocked, the upper cover body 2.1 is opened by an angle relative to the lower cover body 2.2, and the lower cover body 2.2 is still flush with the machine body 1; in the linkage stroke, at this time the user continues to rotate the upper cover body 2.1 upward, the transmission shaft 2.11 cooperates with the end of the guide groove 4.2 to drag the lower cover body 2.2 to rotate synchronously with the upper cover body 2.1 around the rotation axis, and the one-way valve 6.3 closes the water inlet end 6.2, thereby realizing the one-way operation for opening the machine cover 2, only the opening rotation operation of the upper cover body 2.1 is needed to realize the unlocking and opening of the machine cover 2.

[0027] The cover 2 in this embodiment also supports one-way operation when closing. On the closing rotation track of the cover 2, the cooperation between the transmission shaft 2.11 and the guide groove 4.2 defines a reset stroke and a locking stroke in sequence. When the cover 2 is fully open, the upper cover body 2.1 and the lower cover body 2.2 are still in a relatively expanded posture. At this time, the user rotates the upper cover body 2.1 in the closing direction. In the reset stroke, the upper cover body 2.1 rotates relative to the machine body 1. The transmission shaft 2.11 actuates the lower cover body 2.2 to rotate to the closed position of being engaged with the machine body 1 through the end of the guide groove 4.2 in the closing track, and synchronously rotates the lower cover body 2.2 to the preparatory position of being flush with the surface of the machine body 1. At the end of the reset stroke, the upper cover body 2.1 is raised relative to the lower cover body 2.2, and the locking stroke of the driving lock rod 4 moving into the engagement part 1.1 is defined along the guide groove 4.2 in the closing track. In the locking stroke, the user continues to rotate the closing upper cover body 2.1. The upper cover body 2.1 continues to rotate relative to the lower cover body 2.2. The transmission shaft 2.11 starts to perform the locking stroke from the end of the guide groove 4.2. The upper cover body 2.1 is closed relative to the lower cover body 2.2. The movement of the transmission shaft 2.11 in the guide groove 4.2 drives the lock rod 4 to extend towards the engagement part 1.1. The locking part 4.1 is engaged with the engagement part 1.1, and the locking is completed. Thus, the closing of the cover 2 and the machine body 1, and the locking of the lower cover body 2.2 are completed. The one-way operation of the closing cover 2 is realized. The user only needs to perform the closing rotation operation on the upper cover body 2.1 to realize the locking and closing of the cover 2. The one-way valve 6.3 abuts against the machine body 1 and opens the water inlet end 6.2.

[0028] Through the above improvement, the user can sequentially complete the release and closing of the extraction cavity 3 by rotating the upper cover body 2.1 in a single direction. When opening, the natural lifting action of the upper cover body 2.1 first unlocks the lock rod 4, and then realizes the rotation opening of the lower cover body 2.2. When closing, the simple pressing action of the lower cover body 2.2 triggers the reset of the lower cover body 2.2, and then realizes the locking of the lock rod 4 and the engagement part 1.1, and completes the closing and locking of the lower cover body 2.2 and the machine body 1. The action is coherent and efficient, and avoids the possible structural damage caused by forcibly lifting the cover without first unlocking. The complexity and uncertainty of the traditional design of “first pressing the button and then lifting the cover” or relying on the spring to automatically pop open are eliminated. Single-handed operation is realized, and the user experience is improved.

[0029] It is worth mentioning that the unlocking opening and closing locking of the cover 2 are both two action stages, which avoids the impact force generated by the traditional structure flip cover pop or sudden impact, is beneficial to protect the water supply channel 6 structure integrated in the cover 2, significantly improves the durability and reliability of the product under long-term use, and in the unlocking opening process, the upper cover body 2.1 is first rotated relative to the lower cover body 2.2 and the machine body 1, ensures that the lock rod 4 is separated from the joint part 1.1, and then drives the lower cover body 2.2 to rotate relative to the machine body 1, and finally completes the opening of the cover 2, in the closing locking process, first ensure that the lower cover body 2.2 is accurately reset to be flush with the machine body 1, and then complete the final locking by continuing to press the upper cover body 2.1, the whole opening and closing process is one step to the destination, the mechanical logic is clear, and the expected effect of locking by pressing down and unlocking by opening is realized reliably, and the user does not need to perform additional operations.

[0030] In addition, the rotation trajectories of the upper cover body 2.1 and the lower cover body 2.2 are coordinated in time sequence with the water path on-off, at the beginning of the linkage stroke, the unlocking action has been completed, and the check valve 6.3 will be closed in advance in response to the displacement, and the water inlet end 6.2 is closed when the lower cover body 2.2 is opened by the upper cover body 2.1, which ensures that the water inlet end 6.2 has no water flow through when the lower cover body 2.2 is opened and separated, and fundamentally eliminates the risk of dripping during the opening of the cover; in the closing rotation trajectory, the action of the lower cover body 2.2 and the lock rod 4 is in the order of first resetting and then locking, only after ensuring that the lower cover body 2.2 is completely aligned with the machine body 1 in the resetting stroke, the check valve 6.3 is opened, and the locking is realized by the cooperation of the lock rod 4 and the joint part 1.1 in the last stage of the locking stroke.

[0031] As a further embodiment of the guide groove 4.2, in the embodiment, the guide groove 4.2 is located in the rotation trajectory and is inclined relative to the sliding direction of the lock rod 4, and is specifically configured to be inclined upward toward the joint part 1.1, and the lower end of the guide groove 4.2 defines an initial slot 4.21, which is in a substantially vertical posture relative to the subsequent stroke segment of the guide groove 4.2, and the initial slot 4.21 is configured to receive and position the transmission shaft 2.11 in the locked state, so as to keep the lock rod 4 in the position where the locking part 4.1 cooperates with the joint part 1.1, and further provides a stable accommodation position for the transmission shaft 2.11 in the locked position, effectively preventing the transmission shaft 2.11 from accidentally sliding out of the locked position due to vibration or accidental touch, thereby ensuring the holding force of the lock rod 4 in the locked state, ensuring the high-pressure sealing property of the coffee extraction process, and making the state under the closed locking more reliable.

[0032] Further combined Figure 6As shown, specifically, the lower cover 2.2 contains an assist spring that abuts against the locking lever 4. The assist spring is oriented towards the unlocking direction of the locking lever 4 and maintains the initial slot 4.21 abutting against the drive shaft 2.11. The initial slot 4.21 provides stable mechanical positioning for the locked state, preventing accidental unlocking. The assist spring works in conjunction with the one-way operation, providing auxiliary force when opening the cover, making the unlocking action less strenuous and improving the user experience. At the same time, at the end of closing the cover, the spring force needs to be overcome to complete the locking, providing the user with a clear tactile feedback and enhancing the sense of confirmation of operation.

[0033] (Positioning post 7) like Figures 9 to 11 As shown, in some other embodiments, to ensure that the locking rod 4 is away from the joint 1.1 during the opening process, that is, the locking rod 4 is retracted into the lower cover 2.2, the lower cover 2.2 is provided with a flexible positioning post 7. The positioning post 7 is arranged perpendicular to the sliding direction of the locking rod 4. The positioning post 7 is used to keep the locking rod 4 in the retracted state at all times when the lower cover 2.2 is in the unfolded posture.

[0034] Furthermore, the locking rod 4 is provided with a positioning groove 4.3 that opens toward the joint 1.1. The positioning pin 7 abuts against the positioning groove 4.3 at least during the reset stroke of the lower cover 2.2 to prevent the locking part 4.1 from engaging with the joint 1.1. The body 1 abuts against the positioning pin 7 at the end of the reset stroke of the lower cover 2.2 and drives the positioning pin 7 away from the positioning groove 4.3 to allow the locking part 4.1 to engage with the joint 1.1.

[0035] from Figure 14 and Figure 15 As can be seen, the positioning groove 4.3 is U-shaped, and the positioning post 7 is positioned directly opposite the positioning groove 4.3. The positioning post 7 has a second outer wall 7.2 that is larger than the opening of the positioning groove 4.3. In the unlocked position, the locking rod 4 moves away from the joint 1.1. At this time, the positioning post 7 moves towards the positioning groove 4.3 under the elastic action, so that the second outer wall 7.2 is exposed in the positioning groove 4.3, making it impossible for the locking rod 4 to move towards the joint 1.1, thereby preventing the locking rod 4 from engaging with the joint 1.1. During the locking stroke, the lower cover 2.2 is in a position flush with the body 1. The body 1 abuts against the downward-moving positioning post 7 and overcomes the elastic force from the positioning post 7 to drive the second outer wall 7.2 away from the positioning groove 4.3. At this time, the movement stroke of the locking rod 4 is released, allowing the locking rod 4 to move towards the joint 1.1.

[0036] By the above improvement, the positioning column 7 plays a secondary safety role. Only when the lower cover body 2.2 is completely closed to the body 1, the positioning column 7 will be pressed by the body 1 to release the restriction on the lock rod 4, allowing the locking action to proceed, which effectively prevents the lock rod 4 from moving accidentally and interfering with the joint 1.1 in the non-completely closed state, or the lower cover body 2.2 from not being closed to the position, avoiding the possible waterway sealing failure or structural damage caused thereby, further improving the accuracy and reliability of the closing and locking action.

[0037] As shown in Figure 10 As a further explanation of the positioning column 7, the positioning column 7 is preferably elastically movable by a limiting spring 7.3 abutting between the positioning column 7 and the positioning seat 2.25, and driving the positioning column 7 to move towards the lock rod 4. As an example, the positioning column 7 is arranged at the upper part of the lock rod 4. In the unlocking stroke and the locking stroke, the positioning column 7 always abuts on the lock rod 4 under the action of the limiting spring 7.3, thereby guiding the movement of the lock rod 4 and reducing the vertical movement of the lock rod 4.

[0038] Further, the positioning column 7 has a first outer wall 7.1 matching the opening of the positioning groove 4.3, and a second outer wall 7.2 is arranged at the first outer wall 7.1 in the moving direction of the positioning column 7, specifically above the first outer wall 7.1, so that a stepped surface is formed between the first outer wall 7.1 and the second outer wall 7.2. When the lock rod 4 cooperates with the joint 1.1, the stepped surface abuts on the lock rod 4. When the lock rod 4 moves away from the joint 1.1 to the unlocking position, the positioning column 7 moves downward to the opening position of the positioning groove 4.3 under the action of the limiting spring 7.3, and at this time the first outer wall 7.1 occupies the locking position to prevent the lock rod 4 from returning.

[0039] Preferably, the bottom of the lower cover body 2.2 is provided with a through hole for the first outer wall 7.1 to pass through.

[0040] Preferably, the lower cover body 2.2 is further provided with a housing 2.21 for accommodating the movement of the positioning column 7 therein.

[0041] In this embodiment, in order to reset the positioning column 7 when the lower cover body 2.2 cooperates with the body 1, so that the lock rod 4 moves towards the joint 1.1, an abutting seat 1.6 is arranged on the body 1 towards the positioning column 7, which extends towards the lower cover body 2.2 and contacts the end of the positioning column 7 when the lower cover body 2.2 is closed to the body 1.

[0042] When the lower cover body 2.2 reaches the closed position, the abutting seat 1.6 is pressed against the positioning column 7 with the closing of the lower cover body 2.2, so that the first outer wall 7.1 is in butt joint with the positioning groove 4.3. Since the first outer wall 7.1 is matched with the opening of the positioning groove 4.3, at this time the lock rod 4 is reset to the locked position under the pressing action of the transmission shaft 2.11 on the guide groove 4.2. Through the above improvement, the switching between the locked and unlocked states of the lock rod 4 is realized through the ingenious design of the first outer wall 7.1 and the second outer wall 7.2, and is realized simultaneously with the action of the lower cover body 2.2. The structure is simple and the action is reliable, which ensures the effective realization of the anti-misoperation function.

[0043] Further referring to Figure 10 , the lower cover body 2.2 is provided with a positioning seat 2.25 which is in butt joint with the abutting seat 1.6. The positioning seat 2.25 is specifically provided on the bottom of the lower cover body 2.2 and located on the side of the through hole, thereby realizing the positioning effect of the lower cover body 2.2 and the end surface of the machine body 1.

[0044] (Installation and guidance of the lock rod 4) In combination with Figure 14 and Figure 15 , specifically, the lower cover body 2.2 is provided with a mounting cavity for accommodating the lock rod 4. The lock rod 4 is constrained to slide in the direction close to or away from the joint 1.1. The lock rod 4 is arranged in the lower cover body 2.2 to be able to slide only in the length direction, and is in abutment with the lower cover body 2.2 at the upper end and the lower end in the rotation direction, so that the upper cover body 2.1 and the transmission shaft 2.11 drive the lock rod 4 through the guide groove 4.2, and then drive the lower cover body 2.2 to rotate through the lock rod 4.

[0045] As a further embodiment of the assembly of the lock rod 4 in the lower cover body 2.2, further, the lower cover body 2.2 is provided with a first mounting shell 9. The first mounting shell 9 and the lower cover body 2.2 define a translation space therebetween. The lock rod 4 is constrained to translate in the translation space between the lower cover body 2.2 and the first mounting shell 9. The lower cover body 2.2 and the first mounting shell 9 are provided with a guide rib abutting against the lock rod 4. The guide rib is specifically provided on the end face of the lock rod 4 facing the first mounting shell 9 and the lower cover body 2.2, thereby constituting a stable constraint to the lock rod 4. The guide rib ensures that the lock rod 4 can only smoothly translate in the preset direction, so that the sliding of the lock rod 4 is more smooth. In addition, the cooperation of the first mounting shell 9 and the lower cover body 2.2 realizes the transmission of the lock rod 4 to the lower cover body 2.2 in the opening trajectory, so that the lock rod 4 not only serves as a locking member for the lower cover body 2.2, but also serves as a transmission member between the upper cover body 2.1 and the lower cover body 2.2.

[0046] The guide rib includes a guide rail 2.22 formed on the bottom of the lower cover body 2.2, and the lock rod 4 is arranged to move in the guide rail 2.22. The guide rib further includes a linear rib 9.1 formed on the bottom of the first mounting shell 9, and the upper end of the lock rod 4 is arranged to slide on the linear rib 9.1, thereby restricting the left and right movement of the lock rod 4 and reducing the friction resistance of the lock rod 4.

[0047] Specifically, the first mounting shell 9 is fixedly connected to the lower cover body 2.2 by bolts.

[0048] In some other embodiments, in order to further improve the smoothness of the action of the lock rod 4, a sliding groove 4.4 is arranged in the middle of the lock rod 4, the sliding groove 4.4 is arranged along the translation direction of the lock rod 4, and a guide column 2.23 is arranged in the lower cover body 2.2 and arranged to be inserted into the sliding groove 4.4. The guide column 2.23 is fixedly connected to the first mounting shell 9, thereby further enhancing the stability of the movement track of the lock rod 4. The guide column 2.23 moves in the sliding groove 4.4, effectively preventing the lock rod 4 from producing deflection or warping during translation, ensuring the cooperation precision of the transmission shaft 2.11 and the guide groove 4.2, thereby making the linkage process smoother and more reliable. Meanwhile, the guide column 2.23 also serves as a connecting member of the first mounting shell 9, further improving the structural compactness of the inside of the machine cover 2.

[0049] The one end of the assisting spring is arranged to abut against the first mounting shell 9, and the other end is arranged to abut against the lock rod 4.

[0050] Further, the upper cover body 2.1 includes a mounting wall connected to one end of the transmission shaft 2.11, and a fixing plate detachably connected to the other end of the transmission shaft 2.11. The lock rod 4 is provided with an ear portion arranged to be constrained between the mounting wall and the fixing plate, and the guide groove 4.2 is formed on the ear portion. The detachable structure of the mounting wall and the fixing plate allows the transmission shaft 2.11 to conveniently pass through the ear portion of the lock rod 4 and be reliably fixed, and the assembly process is simple. Meanwhile, the mounting wall and the fixing plate realize the limiting of the transmission shaft 2.11 in the guide groove 4.2, effectively preventing the transmission shaft 2.11 from coming out of the guide groove 4.2.

[0051] As a further embodiment of the internal structure of the machine cover 2, the lock rod 4 includes a main body portion and rod body portions arranged on both sides of the main body portion. The guide groove 4.2 and the locking portion 4.1 are both formed on the two ends of the rod body portions. The number of the assisting springs 5 is two, and they are arranged on both sides of the main body portion. The sliding groove 4.4 is arranged in the middle of the main body portion, and the positioning groove 4.3 is arranged on both sides of the rod body portions. Correspondingly, the number of the transmission shafts 2.11 is two, and they are respectively inserted into the rod body portions on both sides of the main body portion, thereby constraining each part of the lock rod 4 in the transverse width of the lock rod 4, ensuring the compactness of the internal structure of the machine cover 2, and the smoothness and reliability of the action of the lock rod 4.

[0052] The water supply channel 6 is located at the lower part of the main body.

[0053] (Damping block 8) like Figures 16 to 19 As shown, based on the above embodiment, to further improve the operating feel when the cover 2 rotates and the buffering effect when the cover 2 opens, the cover 2 is provided with a rotating seat 2.3 arranged around the rotation axis, and the body 1 is provided with a support seat 1.2 that cooperates with the rotating seat 2.3. One of the rotating seat 2.3 and the support seat 1.2 is provided with a damping block 8 protruding from it, and the other of the rotating seat 2.3 and the support seat 1.2 is provided with a first contour surface 2.4 that is set with respect to the rotation trajectory. The first contour surface 2.4 abuts against the damping block 8 in the rotation trajectory. 4. Extending along the opening rotation trajectory, the first contoured surface 2.4 abuts against the damping block 8 in the rotation trajectory. The damping block 8 is preferably made of an elastic material, such as rubber. During the rotation of the cover 2, it is squeezed by the first contoured surface 2.4, thus applying damping friction to the cover 2. At the same time, the damping block 8 maintains its deformation during rotation to continuously provide operating feel. The damping block 8 achieves basic damping and buffering functions, providing continuous frictional damping for the entire opening and closing process, realizing the smoothness of the action, laying the foundation for improving the feel, and beginning to play the role of protecting the internal water passage.

[0054] Further reference Figure 16 As shown, in one embodiment of the specific placement of the damping block 8, the damping block 8 is disposed on the body 1, specifically protruding from the support seat 1.2. The first contouring surface 2.4 is disposed on the rotating seat 2.3, and the first contouring surface 2.4 and the second contouring surface 8.3 are opposite to each other. The first contouring surface 2.4 and the support seat 1.2 are spaced apart. In other words, since the damping block 8 protrudes from the support seat 1.2, a space is created between the support seat 1.2 and the first contouring surface 2.4. This space is used to allow the damping block 8 to deform under the pressure of the first contouring surface 2.4. By providing space for the damping block 8 to deform under pressure, the contact area between the deformed damping block 8 and the rotating seat 2.3 is increased, thereby providing a more reliable damping feel. The first contouring surface 2.4 presses against the damping block 8, and the space allows the damping block 8 to undergo elastic deformation. This deformation itself absorbs energy and provides cushioning, making the damping feel both smooth from friction and gentle from compression, resulting in a richer tactile experience.

[0055] Specifically, the damping block 8 is provided with a second contour surface 8.3 that is opposite to the first contour surface 2.4. In addition, the damping effect can be adjusted by selecting the material of the damping block 8. As an example, both the first contour surface 2.4 and the second contour surface 8.3 are circular contours to adapt to the rotation trajectory of the cover 2.

[0056] As a further implementation of the cooperation between the damping block 8 and the rotating seat 2.3, the rotating seat 2.3 is jointly formed by the upper cover body 2.1 and the lower cover body 2.2, and the first profiled surface 2.4 includes a first cooperation section 2.31 and a second cooperation section 2.32 which is arranged in the direction of the rotating opening, the first cooperation section 2.31 is formed on the lower cover body 2.2, and the second cooperation section 2.32 is formed on the upper cover body 2.1, the second cooperation section 2.32 has an outer diameter greater than that of the first cooperation section 2.31, which aims to match the damping force with the user's operation demand by providing different damping forces at different strokes, which not only brings excellent hand feeling, but also provides greater damping force in the linkage stroke to effectively buffer the entire cover 2.

[0057] In combination Figure 15 As shown in the figure, the rotating seat 2.3 includes an upper rotating seat 2.12 formed on the upper cover body 2.1 and a lower rotating seat 2.24 formed on the lower cover body 2.2, in the fully closed position, the upper rotating seat 2.12, the second cooperation section 2.32 and the damping block 8 are spaced apart and located above the damping block 8, the lower rotating seat 2.24 and the first cooperation section 2.31 cooperate with the damping block 8, and the upper rotating seat 2.12 and the lower rotating seat 2.24 are spaced apart in the direction of the rotating opening, that is, the first cooperation section 2.31 is arranged on the lower rotating seat 2.24, and the second cooperation section 2.32 is arranged on the upper rotating seat 2.12, the first cooperation section 2.31 is formed below the second cooperation section 2.32, thereby in the unlocking stroke, the rotation of the upper cover body 2.1 does not contact the damping block 8, so that the unlocking operation is light, after completing the unlocking stroke, the upper rotating seat 2.12 abuts against the lower rotating seat 2.24, and in the linkage stroke, the upper cover body 2.1 drives the lower cover body 2.2 to rotate, and then the first cooperation section 2.31 rubs against the damping block 8, as the lower cover body 2.2 expands, the upper cover body 2.1 approaches the damping block 8, and in the subsequent opening rotating track, the upper cover body 2.1 formally rubs against the damping block 8, thereby providing greater buffering and hovering effect in the linkage stroke.

[0058] In the reset stroke, the user can clearly perceive the different hand feelings when the second cooperation section 2.32 and the first cooperation section 2.31 abut against the damping block 8, and the change in hand feeling when the locking stroke starts, the entire operation process is clear, and clear tactile feedback is provided for the user. The user can clearly perceive the completion of the stroke stage; when the locking stroke is performed, a slightly larger force is needed to overcome the assisting spring and complete the locking, and the positioning column 7 falls into the positioning groove 4.3 of the locking rod 4 when it is released, which provides a clear "in-place" hand feeling, which effectively guides the correct operation sequence and prevents damage to the components due to improper operation.

[0059] Specifically, a guide surface 2.33 is arranged between the first matching section 2.31 and the second matching section 2.32, and the guide surface 2.33 forms a damping concave part matched with the end part of the damping block 8 on the rotating opening direction side, which ensures the persistence and stability of the damping effect. The damping block 8 is accurately limited and fixed through the cooperation of the bearing seat 1.2 and the mounting seat 10, which prevents the deflection, deformation or displacement of the damping block 8 under long-term stress, ensures the stability and consistency of the damping torque output, and thus guarantees the long-term effectiveness of the synergistic effect.

[0060] Specifically, in the unlocking stroke of the opening operation and the locking stroke of the closing operation, the damping force mainly comes from the friction inside the transmission system, and the value is small, which ensures the lightness and labor-saving of the single-handed operation; in the linkage stroke and the reset stroke, when the lower cover body 2.2 starts to move, the damping structure intervenes, and through the interaction of the different radius of gyration matching surfaces and the damping block 8, a significantly increased damping force is provided, which not only ensures the smooth and gentle movement of the flip cover, effectively avoids the impact, and realizes the reliable hovering at any position. The user can clearly perceive the different hand feelings of the second matching section 2.32 and the first matching section 2.31 when they are in contact with the damping block 8, as well as the change of the hand feeling when starting the locking stroke, and the whole operation process is clear, which provides clear tactile feedback for the user.

[0061] Further referring to Figure 18 and Figure 19 , specifically, the damping block 8 includes an abutting part 8.1 matched with the first profiling surface 2.4, and a supporting part 8.2 abutting on the inner wall of the bearing seat 1.2 away from the cover 2, the abutting part 8.1 is arranged in the bearing seat 1.2 and is engaged with the rotating seat 2.3, the abutting part 8.1 is generally columnar as a whole, and the diameter of the supporting part 8.2 is greater than that of the abutting part 8.1, wherein the abutting part 8.1 is the main component for providing damping force, and the supporting part 8.2 is used to maintain the overall posture of the damping block 8 and acts as a mounting and matching component to keep the damping block 8 on the bearing seat 1.2, and preferably the bearing seat 1.2 provides an area greater than the abutting block to ensure the position reliability of the damping block 8 in the assembled state.

[0062] The mounting seat 10 is also arranged in the machine body 1 and supports the damping block 8, the bearing seat 1.2 cooperates with the mounting seat 10 to form a limiting wall enclosing the profile side of the supporting part 8.2, and the supporting part 8.2 is fixed in a posture of abutting and being limited from deforming, and by limiting the profile of the supporting part 8.2, the supporting part 8.2 can be hindered from deforming when receiving the friction force from the rotating cover 2, so as to avoid the clearance of the abutting part 8.1 from shifting, at this time, the supporting part 8.2 is preferably fixed in a posture of being pressed and deformed, thereby providing pre-tightening for the assembled state of the damping block 8, so that the main deformation part is present on the abutting part 8.1 to ensure the damping feeling of the rotating cover 2.

[0063] With the above improvement, on the one hand, the limiting wall is enclosed on the profile side of the supporting part 8.2, effectively preventing the damping block 8 from rotating or deflection due to friction during work, ensuring the constant contact posture and friction area between the damping block 8 and the profiling surface, thereby ensuring the stable output of damping torque; On the other hand, the damping block 8 is firmly part of the rotating structure, enhancing the overall rigidity and stability of the rotating joint, reducing the abnormal sound and shaking during operation, further improving the operation feel and durability of the product, and ensuring the smooth opening and closing action of the two-section machine cover 2.

[0064] From Figure 18 It can be seen that the machine body 1 is provided with a mounting seat 10, which is locked to the back of the supporting seat 1.2 and clamped on the supporting part 8.2. The mounting seat 10 is used to provide fixation and limiting effect for the damping block 8. The cooperation of the supporting part 8.2 and the mounting seat 10 firmly limits the damping block 8 at the back of the supporting seat 1.2, preventing it from loosening or shifting under long-term stress, and ensuring the long-term stability of the damping effect. At the same time, this back-fixed way makes the assembly more convenient.

[0065] Among them, the mounting seat 10 is preferably fixed on the back of the supporting seat 1.2 by bolt locking, and at the same time, the locking degree of the adjusting bolt can also be adjusted to control the protrusion degree of the abutting part 8.1 relative to the supporting seat 1.2, and then control the damping force. During assembly, first put the damping block 8 into the corresponding cavity of the supporting seat 1.2, and then fix the mounting seat 10 on the supporting seat 1.2 by screw. The mounting seat 10 exerts a certain pre-tightening force on the supporting part 8.2 of the damping block 8, so that it is tightly pressed against the inner wall of the supporting seat 1.2, but it does not completely lock and affect its small elastic deformation ability. In this way, the supporting part 8.2 of the damping block 8 is strictly limited in the circumferential and axial directions, and only the abutting part 8.1 can produce the expected elastic deformation to provide a stable friction torque.

[0066] As a further embodiment of the supporting seat 1.2 being limited to deformation, as shown in Figure 18 and Figure 19 The supporting seat 1.2 cooperates with the mounting seat 10 to form a limiting wall enclosing the profile side of the supporting part 8.2. The limiting wall encloses and limits the supporting part 8.2 of the damping block 8 from the profile side, effectively preventing the damping block 8 from shifting or twisting under stress, and causing the deformation of the damping block 8.

[0067] The limiting wall includes an upper top wall on the supporting seat 1.2, side walls on both sides of the upper top wall, and a front end wall at the front end of the upper top wall. The upper top wall is provided with an opening for the abutting part 8.1 to pass through, and the upper top wall abuts on the end face of the supporting part 8.2 extending on the side of the abutting part 8.1. The side walls abut on the two side end faces of the supporting part 8.2; The limiting wall further includes a lower top wall on the top of the mounting seat 10, and a rear end wall at the rear end of the lower top wall. The lower top wall is supported on the bottom of the supporting part 8.2. The front end wall and the rear end wall abut on the front and rear end faces of the supporting part 8.2 respectively, thereby forming the limiting wall surrounding the supporting part 8.2.

[0068] As a preferred, the supporting seat 1.2 and / or the mounting seat 10 is provided with a positioning part 10.1 embedded in the supporting part 8.2. The positioning part 10.1 specifically refers to a protruding part extending towards the supporting part 8.2 and located on the side of the bottom of the abutting part 8.1. Correspondingly, a recess is provided on the supporting part 8.2 around the bottom of the abutting part 8.1. Not only does it play a positioning role in the installation of the damping block 8, but it also further limits the movement of the damping block 8. The double limiting ensures the precise position of the damping block 8 during operation, so that the damping force output is always consistent with the design expectation, improving the precision and consistency of the product.

[0069] From Figure 19 It can be seen that, in order to further improve the reliability of the cover 2 during rotation, specifically, the rotating seat 2.3 is provided with auxiliary seats 2.5 at both ends of the rotating axis, and the supporting seat 1.2 is provided with guide seats 1.3 at both ends of the rotating axis. The auxiliary seats 2.5 and the guide seats 1.3 form a third profile surface that matches the rotating track. The third profile surface is preferably circular in profile. The third profile surface is kept in cooperation, thereby providing main radial support and guidance at both ends of the rotating axis, and the damping structure at the center is clearly divided in labor. The third profile surface bears the main mechanical load to ensure the smooth rotation of the cover 2, while the damping structure at the first profile surface 2.4 provides the hand feel. This design reduces the radial pressure on the damping block 8, allowing it to focus more on providing friction, thereby prolonging the service life of the damping block 8.

[0070] (Supply water channel 6) As shown in Figure 20 The inner part of the lower cover body 2.2 is provided with a water channel groove 6.4. The water channel groove 6.4 is provided with a water channel cover 6.5. A sealing ring 6.6 is arranged between the water channel groove 6.4 and the water channel cover 6.5. The water channel groove 6.4 and the water channel cover 6.5 are closed and form a supply water channel 6, so that the supply water channel 6 can be reliably integrated in the cover 2. The risk of bending fatigue of the external water pipe under frequent opening and closing of the cover is avoided. The integrated design of the supply water channel 6 cooperates with the smooth and low-impact cover opening and closing action to jointly ensure the unprecedented long-term sealing reliability and durability of the water channel system.

[0071] As a further embodiment of the water inlet end 6.2 and the water supply end 1.4 joint, the water inlet end 6.2 includes a water inlet seat 6.21 extending at the bottom of the lower cover body 2.2, and a valve seat 6.22 extending inside the lower cover body 2.2, the water inlet seat 6.21 is provided with an opening for waterway communication, the one-way valve 6.3 includes a valve core 6.31 arranged in the valve seat 6.22, and an abutting spring 6.32 abutting between the valve core 6.31 and the waterway cover 6.5, the abutting spring 6.32 acts on the valve core 6.31 and keeps the water inlet end 6.2 closed, the water supply end 1.4 of the machine body 1 is provided with a water passing plug 1.5, the water passing plug 1.5 is provided with a water passing hole inside, the water passing hole is arranged in abutment with the water inlet seat 6.21, in the closed position, the water inlet seat 6.21 abuts against the water passing plug 1.5, wherein the water passing plug 1.5 is preferably a elastic sealing member, the abutting end faces of the water inlet seat 6.21 and the water passing plug 1.5 are sealed with each other to ensure the sealing of the water inlet end 6.2 and the water supply end 1.4.

[0072] Specifically, the machine body 1 is further provided with a heating cavity 12 and a water supply pump 13, and the machine body 1 is further connected with a water tank 11, the water supply pump 13 provides negative pressure to deliver the water in the water tank 11 to the heating cavity 12, and then enters the water inlet end 6.2 and the water supply channel 6 in sequence through the water supply end 1.4, and finally is communicated to the extraction cavity 3 through the water outlet end 6.1, the waterway structure inside the machine body 1 is a conventional technical means of coffee machine, which has been widely used in the field, and will not be described in detail here.

[0073] It is worth mentioning that the waterway cooperation between the water supply end 1.4 and the water inlet end 6.2 does not need to be connected by a hose or a hard pipe, and in combination with the buffer action of the machine cover 2, the one-way valve 6.3 can timely close the water inlet end 6.2 when the lower cover body 2.2 is separated from the machine body 1, and the service life is guaranteed.

[0074] The specific embodiment is only an explanation of the application, which is not a limitation of the application, and those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope of the claims of the application, it is protected by the patent law.

Claims

1. A coffee maker that is reliable in operation, characterized in that, The utility model relates to an automatic coffee machine, comprising: a machine body (1) and a cover (2) rotatably arranged on the machine body (1), the cover (2) comprising an upper cover body (2.1) and a lower cover body (2.2) arranged around a rotation axis, the lower cover body (2.2) being closed with the machine body (1) to jointly form an extraction chamber (3), a lock rod (4) movably arranged on the lower cover body (2.2), the lock rod (4) having a locking portion (4.1), the machine body (1) being provided with an engaging portion (1.1) cooperating with the locking portion (4.1); and a water supply channel (6) integrated inside the cover (2), the water inlet end (6.2) of the water supply channel (6) being communicated to the machine body (1), the water outlet end (6.1) of the water supply channel (6) being communicated to the extraction chamber (3), and a one-way valve (6.3) being arranged on the water supply path, the one-way valve (6.3) being configured to block the water inlet end (6.2) in response to the opening operation of the lower cover body (2.2); the upper cover body (2.1) being provided with a transmission shaft (2.11), the lock rod (4) being provided with a guide groove (4.2) for the transmission shaft (2.11) to be inserted into, the opening rotation track of the upper cover body (2.1) being sequentially defined by the extension path of the guide groove (4.2) to form an unlocking stroke and a linkage stroke, in the unlocking stroke, the movement of the transmission shaft (2.11) in the guide groove (4.2) drives the locking portion (4.1) to separate from the engaging portion (1.1), and the upper cover body (2.1) rotates relative to the lower cover body (2.2); in the linkage stroke, the transmission shaft (2.11) cooperates with the end of the guide groove (4.2) to pull the lower cover body (2.2) to rotate synchronously with the upper cover body (2.1), and the one-way valve (6.3) closes the water inlet end (6.2).

2. A coffee maker operating reliably according to claim 1, characterized in that: in the closing rotation track of the cover (2), the cooperation of the transmission shaft (2.11) and the guide groove (4.2) sequentially defines a reset stroke and a locking stroke; in the reset stroke, the upper cover body (2.1) rotates relative to the machine body (1), and through the cooperation of the transmission shaft (2.11) and the end of the guide groove (4.2), the lower cover body (2.2) is pulled to rotate synchronously to a preparatory position flush with the surface of the machine body (1); in the locking stroke, the upper cover body (2.1) continues to rotate relative to the lower cover body (2.2), the movement of the transmission shaft (2.11) in the guide groove (4.2) drives the locking portion (4.1) to engage with the engaging portion (1.1), completes the locking, and the one-way valve (6.3) abuts against the machine body (1) and opens the water inlet end (6.2).

3. A coffee maker according to claim 1, characterized in that: the lower cover body (2.2) is provided with a mounting cavity for accommodating the lock rod (4), the lock rod (4) is constrained to slide relative to the direction close to or away from the engaging portion (1.1), and the guide groove (4.2) is arranged obliquely relative to the sliding direction.

4. A coffee maker according to claim 1, characterized in that: The end of the guide groove (4.2) defines an initial notch (4.21), in the locked state of the locking part (4.1) matched with the engaging part (1.1), the transmission shaft (2.11) is received and positioned in the initial notch (4.21); and the lower cover body (2.2) is provided with a power spring abutting the lock rod (4), the power spring is arranged towards the unlocking direction of the lock rod (4), and the initial notch (4.21) is kept abutting the transmission shaft (2.11).

5. A coffee maker operating reliably according to claim 1, characterized in that: The lower cover body (2.2) is provided with an elastically movable positioning column (7), the lock rod (4) is provided with a positioning groove (4.3) opening towards the engaging part (1.1), the positioning column (7) has a second outer wall (7.2) larger than the opening of the positioning groove (4.3), and the positioning column (7) abuts the positioning groove (4.3) at least in the reset stroke of the lower cover body (2.2) to prevent the locking part (4.1) from cooperating with the engaging part (1.1). The machine body (1) abuts the positioning column (7) at the end of the reset stroke of the lower cover body (2.2), and drives the positioning column (7) away from the positioning groove (4.3) to allow the locking part (4.1) to cooperate with the engaging part (1.1).

6. A coffee maker operating reliably according to claim 1, characterized in that: The machine cover (2) is provided with a rotating seat (2.3) arranged around a rotating axis, the machine body (1) is provided with a supporting seat (1.2) matched with the rotating seat (2.3), one of the rotating seat (2.3) and the supporting seat (1.2) is provided with a damping block (8), the other of the rotating seat (2.3) and the supporting seat (1.2) is provided with a first profiling surface (2.4) arranged along a rotating track, the first profiling surface (2.4) abuts the damping block (8) in the rotating track, and the first profiling surface (2.4) is arranged along the opening rotating track.

7. A coffee maker operating reliably according to claim 6, characterized in that: The first profiling surface (2.4) includes a first matching section (2.31) and a second matching section (2.32) arranged towards the rotating opening direction, the first matching section (2.31) is formed on the lower cover body (2.2), the second matching section (2.32) is formed on the upper cover body (2.1), and the second matching section (2.32) has an outer diameter larger than that of the first matching section (2.31).

8. A coffee maker operating reliably according to claim 7, characterized in that: A guide surface (2.33) is arranged between the first matching section (2.31) and the second matching section (2.32), and the guide surface (2.33) forms a damping recess matched with the end of the damping block (8) on the rotating opening direction side.

9. A coffee maker operating reliably according to claim 6, characterized in that: The damping block (8) comprises an abutting portion (8.1) matched with the first profiling surface (2.4), and a supporting portion (8.2) abutting on the supporting seat (1.2) away from the inner wall of the cover (2), the abutting portion (8.1) is arranged in the supporting seat (1.2) and is engaged with the rotating seat (2.3), the machine body (1) is further provided with a mounting seat (10) supported by the damping block (8), the supporting seat (1.2) is matched with the mounting seat (10) and constitutes a limiting wall enclosing the profile side of the supporting portion (8.2), and the supporting portion (8.2) is fixed in a state of abutting and being limited from deforming.

10. A coffee maker operating reliably according to claim 1, characterized in that: The inside of the lower cover body (2.2) is provided with a water channel groove (6.4), the water channel groove (6.4) is provided with a water channel cover (6.5) on the upper cover, a sealing ring (6.6) is arranged between the water channel groove (6.4) and the water channel cover (6.5), and the water channel groove (6.4) and the water channel cover (6.5) are closed and constitute a water supply passage (6).

Images