Locking structure of coffee machine cover

Abstract

The utility model discloses a locking structure of a coffee machine cover, which comprises a machine body and a machine cover rotationally arranged on the machine body, the machine cover comprises an upper cover body and a lower cover body which are arranged around a rotating axis, the lower cover body is jointed with the machine body to form an extraction cavity, a lock rod is arranged in the lower cover body in a sliding manner, and one end of the lock rod is provided with a guide groove. A locking part is arranged at the other end of the locking rod, a joint part is arranged on the machine body, and the joint part is matched with the locking part so as to keep the machine cover on the machine body; the upper cover body is provided with a rotating opening track and a rotating closing track, a transmission shaft arranged in the guide groove is arranged on the upper cover body, the guide groove is located in the rotating track and is obliquely arranged relative to the sliding direction of the lock rod, and the transmission shaft abuts against the guide groove in the opening track and drives the lock rod to move away from the joint part to an unlocking position. The transmission shaft pulls the lower cover body to rotate at the tail end of the guide groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, concretely relates to a lock structure of coffee machine cover. BACKGROUND

[0002] Capsule coffee machine and other beverage preparation equipment are usually provided with an extraction chamber for containing coffee capsules. In order to facilitate the placement and removal of capsules, the extraction chamber is usually provided with a flip cover that can be opened and closed. In order to ensure that the extraction process is carried out in a closed environment, the flip cover needs to be reliably locked when closed.

[0003] Traditional flip cover locking structures usually use a buckle type lock, which is usually provided with a buckle on the flip cover and a hook on the machine body, and the lock is achieved by the cooperation of the buckle and the hook. When unlocking, the user needs to press the unlocking button provided on the machine body to drive the buckle and the hook to separate, and then manually lift the flip cover. The user must simultaneously press the button and lift the flip cover, which requires both hands and is inconvenient for the user.

[0004] To solve the above problems, one of the existing technologies is to add a torsion spring at the hinge of the flip cover. After pressing the unlocking button, the elastic potential energy stored in the torsion spring is released, providing a rotating torque for automatically opening the flip cover, achieving one-key opening. However, the button of the buckle structure may have problems such as decreased sensitivity and jamming after frequent use. As a metal elastic element, the torsion spring is prone to fatigue when under stress for a long time, resulting in a decrease in elastic force and possibly causing the flip cover to fail to open completely or open weakly. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a lock structure for a coffee machine cover.

[0006] The above technical purpose of the utility model is achieved by the following technical solutions:

[0007] A lock structure for a coffee machine cover, comprising a machine body and a cover rotatingly arranged on the machine body, the cover comprising an upper cover body and a lower cover body arranged around a rotating axis, the lower cover body being engaged with the machine body and forming an extraction chamber, a lock rod being slidingly arranged in the lower cover body, one end of the lock rod being provided with a guide groove, the other end of the lock rod being provided with a locking portion, the machine body being provided with an engaging portion, the engaging portion cooperating with the locking portion to retain the cover on the machine body.

[0008] The upper cover body is configured with a rotating opening trajectory and a closing trajectory, and a transmission shaft is arranged on the upper cover body and inserted into the guide groove. The guide groove is located in the rotating trajectory and is inclined with respect to the sliding direction of the lock rod. The transmission shaft abuts against the guide groove in the opening trajectory and drives the lock rod to move away from the engaging portion to an unlocking position. The transmission shaft pulls the lower cover body to rotate at the end of the guide groove.

[0009] Further, the transmission shaft drives the lower cover to rotate to the closed position in engagement with the body in the closing trajectory through the end of the guide slot, and the upper cover is relative to the lower cover and is lifted, and the guide slot defines the locking stroke of the driving lock rod into the engaging portion in the closing trajectory.

[0010] Further, the guide slot defines the unlocking stroke in the rotating opening trajectory, the lower cover is flush with the body in the unlocking stroke and the locking stroke, and the locking portion is arranged opposite to the engaging portion, the upper cover is relative to the lower cover and is rotated, and the movement of the transmission shaft in the guide slot corresponds to the separation or engagement of the driving lock rod relative to the engaging portion.

[0011] Further, the end of the guide slot defines an initial slot, which is configured to receive and position the transmission shaft to keep the lock rod in the locking position matched with the locking portion and the engaging portion.

[0012] Further, the lower cover 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, in the unlocking position, the second outer wall is exposed to the positioning slot and prevents the lock rod from matching with the engaging portion, and in the locking stroke, the body abuts against the positioning column and drives the second outer wall away from the positioning slot to allow the lock rod to move towards the engaging portion.

[0013] Further, the positioning column has a first outer wall matched with the opening of the positioning slot, and the second outer wall is arranged at the first outer wall in the movable direction of the positioning column.

[0014] The body is provided with an abutting portion arranged towards the positioning column, the abutting portion abuts against the positioning column with the closing of the lower cover to make the first outer wall butt joint with the positioning slot, and the bottom of the lower cover is provided with a positioning seat butt joint with the abutting portion.

[0015] Further, the lower cover is provided with a mounting shell, the lock rod is constrained to translate between the lower cover and the mounting shell, and the lower cover and the mounting shell are provided with a guide rib abutting against the lock rod.

[0016] Further, the lower cover 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 elastic force of the power spring drives the lock rod to move towards the unlocking direction.

[0017] Further, the middle part of the lock rod is provided with a sliding slot, the lower cover is provided with a guide column placed in the sliding slot, and the guide column is fixedly connected with the mounting shell.

[0018] Further, the upper cover comprises a mounting wall connected to one end of the transmission shaft, and a fixing sheet detachably connected to the other end of the transmission shaft, the lock rod is provided with an ear portion constrained between the mounting wall and the fixing sheet, and the guide slot is formed on the ear portion.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] The utility model discloses a machine cover is divided into upper and lower cover body of the relative rotation, and utilizes the cooperation of the transmission shaft of setting in the upper cover body and the inclined guide slot of setting on the lock bar of lower cover body, and the single rotation action of upper cover body is decomposed into the linear motion of lock bar and the traction rotation motion of lower cover body.

[0021] In the opening process, the user only needs to directly turn over the upper cover body, and can complete the unlocking action of the lock bar through the guide slot, and then further turns over the upper cover body, so that the upper cover body drives the lower cover body to rotate to the opening position through the guide slot, thereby releasing the extraction cavity between the machine cover and the machine body; in the closing process, the user only needs to press the upper cover body in one direction, and the lower cover body is pressed to be flush with the machine body through the guide slot, and then the lower cover body is further pressed, and the upper cover body is engaged with the lower cover body in the guide slot, and the lock bar and the engagement portion cooperate to complete the locking of the machine cover and the machine body;

[0022] The user only needs to directly open or press the upper cover body, realizes the automatic process of opening and unlocking and closing and locking, saves the independent pressing unlocking step, realizes the convenient and smooth one-hand operation, and simultaneously, the structure is completely realized by mechanical linkage, avoids the problems that the traditional torsional spring is easy to fatigue and the buckle structure is easy to jam, and remarkably improves the action reliability and product service life. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic view of the utility model;

[0024] Figure 2 It is the sectional view of the utility model;

[0025] Figure 3 It is the structure schematic view of the machine cover inside of the utility model;

[0026] Figure 4 It is the structure schematic view of the machine cover inside of the utility model; Figure 3 It is the enlarged view of A place in the middle;

[0027] Figure 5 It is the structure schematic view of the machine cover inside of the utility model;

[0028] Figure 6 It is the sectional view of the guide slot at the closing position of the utility model;

[0029] Figure 7 It is the sectional view of the guide slot at the opening position of the utility model;

[0030] Figure 8 It is the sectional view of the positioning column at the closing position of the utility model;

[0031] Figure 9 It is the sectional view of the positioning column at the opening position of the utility model;

[0032] Figure 10 is a sectional view of the power spring at the closing position of the utility model;

[0033] Figure 11 is a sectional view of the power spring at the opening position of the utility model;

[0034] Figure 12 is an exploded view of the machine cover of the utility model;

[0035] Figure 13 is an exploded view of the machine cover of the utility model from another angle;

[0036] Figure 14 is a sectional view of the lock rod at the unlocking position of the utility model;

[0037] Figure 15 is a sectional view of the positioning column at the unlocking position of the utility model;

[0038] In the figure: 1, machine body; 11, joint part; 12, abutting part; 2, machine cover; 21, upper cover body; 211, transmission shaft; 212, mounting wall; 213, fixed sheet; 22, lower cover body; 221, positioning column; 222, first outer wall; 223, second outer wall; 224, positioning seat; 225, guide column; 226, accommodating seat; 227, second rib; 23, rotating shaft; 3, lock rod; 31, guide groove; 311, initial slot; 32, locking part; 33, positioning groove; 34, sliding groove; 4, mounting shell; 41, first rib; 5, power spring; 6, limiting spring; 7, extraction cavity. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0040] It should be understood that although the terms upper, middle, lower, top end, one end, etc. appear in the present 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.

[0041] As Figures 1-5As shown, a locking structure for a coffee machine lid includes a machine body 1 and a lid 2 rotatably mounted on the machine body 1. A pivot 23 is provided between the machine body 1 and the lid 2, which defines the axis of rotation of the machine body 1 and the lid 2. The lid 2 includes an upper cover 21 and a lower cover 22 arranged around the axis of rotation. The upper cover 21 and the lower cover 22 are rotatably connected to the machine body 1 through the pivot 23. The upper cover 21 is the user's hand-held operating part, and the lower cover 22 is used to engage with the machine body 1 to form an extraction chamber 7.

[0042] In order to lock the cover 2 to the body 1 in the closed position, a locking rod 3 is slidably provided in the lower cover 22. One end of the locking rod 3 is provided with a guide groove 31 and the other end is provided with a locking part 32. The body 1 is provided with a connecting part 11. The locking rod 3 can slide to make the connecting part 11 and the locking part 32 cooperate to the locked position, so as to keep the lower cover 22 in the closed position on the body 1. When the locking rod 3 slides away from the connecting part 11 to the unlocked position, the lower cover 22 can rotate relative to the body 1 to the open position, thereby releasing the extraction chamber 7.

[0043] like Figures 6 to 11 As shown, the upper cover 21, serving as the handheld operating part, is equipped with a rotational opening trajectory and a closing trajectory. The upper cover 21 has a drive shaft 211 inserted into a guide groove 31. The locking lever 3 is configured to slide only along its length within the lower cover 22, while its upper and lower ends abut against the lower cover 22 in the rotational direction. This allows the upper cover 21 and drive shaft 211 to drive the locking lever 3 via the guide groove 31, which in turn drives the lower cover 22 to rotate. The guide groove 31 is located within the rotational trajectory and is inclined about the sliding direction of the locking lever 3. In the closed position, the user operates the upper cover 21 to rotate upwards and execute the opening trajectory, thus opening the lower cover 22. The drive shaft 211 slides within the guide groove 31 in the opening trajectory and abuts against the guide groove 31, thereby driving the locking rod 3 to move away from the joint 11 to the unlock position. At this time, the drive shaft 211 slides to the end of the guide groove 31, and the lower cover 22 is unlocked. The upper cover 21 opens at an angle relative to the lower cover 22, while the lower cover 22 remains flush with the body 1. At this time, the user continues to rotate the upper cover 21 upwards, and the drive shaft 211 pulls the locking rod 3 and the lower cover 22 to rotate around the rotation axis at the end of the guide groove 31. Thus, a one-way operation for opening the cover 2 is realized. Only the rotation operation of the upper cover 21 needs to be performed to unlock and open the cover 2.

[0044] Further reference Figure 7 , Figure 9 and Figure 11As shown, the cover 2 in the embodiment also supports one-way operation in the closing operation, and further, in the open position, the upper cover body 21 and the lower cover body 22 are still in a relatively unfolded posture, at this time, the user rotates the upper cover body 21 in the closing direction, the transmission shaft 211 actuates the lower cover body 22 to rotate to the closed position of being engaged with the machine body 1 in the closing track through the end of the guide groove 31, and the upper cover body 21 is relatively raised from the lower cover body 22, and the locking stroke of the drive lock rod 3 moving into the engagement portion 11 is defined along the guide groove 31 in the closing track, the user continues to rotate the closing upper cover body 21, the transmission shaft 211 starts to perform the locking stroke from the end of the guide groove 31, the upper cover body 21 is relatively closed to the lower cover body 22, and at the same time, the lock rod 3 extends towards the engagement portion 11 under the action of the transmission shaft 211, thereby, the closing of the cover 2 and the machine body 1 and the locking of the lower cover body 22 are completed, and the one-way operation of closing the cover 2 is realized, and the user only needs to perform the closing rotation operation on the upper cover body 21 to realize the locking and closing of the cover 2.

[0045] Further, the guide groove 31 defines an unlocking stroke in the opening track of rotation and a locking stroke in the closing track, the lower cover body 22 is flush with the machine body 1 in the unlocking stroke and the locking stroke, and the locking portion 32 is relatively arranged with the engagement portion 11, the upper cover body 21 rotates relative to the lower cover body 22, and the movement of the transmission shaft 211 in the guide groove 31 corresponds to the separation or engagement of the drive lock rod 3 relative to the engagement portion 11.

[0046] When it is needed to be opened, the user lifts the upper cover body 21, the initial rotation of the upper cover body 21 relative to the lower cover body 22 is converted into the unlocking movement of the lock rod 3 through the transmission shaft 211 and the guide groove 31, the locking is released before the upper cover body 21 and the lower cover body 22 start to be unfolded synchronously, the action is coherent and efficient, and the structural damage caused by forcibly flipping the cover without unlocking in advance is avoided fundamentally.

[0047] As shown in Figure 14 and Figure 15 It is worth mentioning that the unlocking opening and the closing locking of the cover 2 are both two action stages, in the unlocking opening process, the upper cover body 21 is first rotated relative to the lower cover body 22 and the machine body 1 to ensure that the lock rod 3 is separated from the engagement portion 11, and then the lower cover body 22 is driven to rotate relative to the machine body 1, and finally the opening of the cover 2 is completed, in the closing locking process, the lower cover body 22 is first accurately reset to be flush with the machine body 1 to make preparations for locking, and then the final locking is completed by continuously pressing the upper cover body 21. The whole opening and closing process is one-step, the mechanical logic is clear, and the expected effect of locking by pressing and unlocking by opening is realized reliably, and the user does not need to perform additional operations.

[0048] In combination with Figure 6 and Figure 13As shown, as a further implementation of the guide groove 31, in the present embodiment, the guide groove 31 is configured to be arranged upwardly inclined towards the joint portion 11, and an initial notch 311 is defined at the lower end of the guide groove 31, which is in a substantially vertical posture relative to the subsequent stroke segment of the guide groove 31, and the initial notch 311 is configured to receive and position the transmission shaft 211 in the locked state, so as to keep the lock rod 3 in the position where the locking portion 32 cooperates with the joint portion 11, thereby providing a stable accommodation position for the transmission shaft 211 in the locked position, effectively preventing the transmission shaft 211 from accidentally sliding out of the locked position due to vibration or accidental touch, thereby ensuring the holding force of the lock rod 3 in the locked state, ensuring the high-pressure sealing of the coffee extraction process, and making the state under closed locking more reliable.

[0049] As shown in Figure 8 and Figure 9 In some other embodiments, in order to ensure that the lock rod 3 is in a state away from the joint portion 11 during the rotation of the lower cover body 22, i.e. the lock rod 3 is retracted into the lower cover body 22, the lower cover body 22 is provided with an elastically movable positioning column 221, which is arranged perpendicular to the sliding direction of the lock rod 3, and the positioning column 221 is used to always keep the lock rod 3 in the retracted state when the lower cover body 22 is in the unfolded posture.

[0050] Preferably, the lower cover body 22 is also provided with a seat 226 for accommodating the movement of the positioning column 221 therein.

[0051] Further, the lock rod 3 is provided with a positioning groove 33 opening towards the joint portion 11, which is arranged in a U-shaped manner, and the positioning column 221 is arranged opposite to the positioning groove 33, wherein the positioning column 221 has a second outer wall 223 larger than the opening of the positioning groove 33, in the unlocked position, the lock rod 3 moves away from the joint portion 11, at this time the positioning column 221 moves towards the positioning groove 33 under the elastic action, so that the second outer wall 223 is exposed to the positioning groove 33, and the lock rod 3 cannot move towards the joint portion 11, thereby preventing the lock rod 3 from cooperating with the joint portion 11; in the locking stroke, at this time the lower cover body 22 is in a posture flush with the body 1, the body 1 abuts against the positioning column 221 after moving downward, and overcomes the elastic force from the positioning column 221 to drive the second outer wall 223 away from the positioning groove 33, at this time, the movement stroke of the lock rod 3 is released to allow the lock rod 3 to move towards the joint portion 11.

[0052] Through the above improvement, the positioning column 221 plays an insurance role, only when the lower cover body 22 is completely closed to the machine body 1, the positioning column 221 will be pressed by the machine body 1 to release the restriction on the lock rod 3, allowing the locking action to proceed, which effectively prevents the lock rod 3 from moving accidentally and interfering with the engaging portion 11 in the non-completely closed state, or the lower cover body 22 is not closed to the position, further improving the accuracy and reliability of the closing and locking action.

[0053] As shown in Figure 8 As a further explanation of the positioning column 221, the positioning column 221 is preferably elastically movable by the limiting spring 6, which abuts between the positioning column 221 and the seat 226 of the lower cover body 22, and drives the positioning column 221 to move towards the lock rod 3, as an example, the positioning column 221 is arranged at the upper part of the lock rod 3, in the unlocking stroke and the locking stroke, the positioning column 221 always abuts on the lock rod 3 under the action of the limiting spring 6, thereby guiding the movement of the lock rod 3, reducing the vertical movement of the lock rod 3, and after the lock rod 3 moves away from the engaging portion 11, the positioning column 221 extends out of the positioning groove 33 under the action of the limiting spring 6.

[0054] Further, the positioning column 221 has a first outer wall 222 matched with the opening of the positioning groove 33, and a second outer wall 223 is arranged in the active direction of the positioning column 221 and spaced from the first outer wall 222, and the second outer wall 223 is specifically arranged above the first outer wall 222, so that a stepped surface of the positioning column 221 is formed between the first outer wall 222 and the second outer wall 223, and the stepped surface abuts on the lock rod 3 when the lock rod 3 cooperates with the engaging portion 11, at this time the first outer wall 222 is located in the positioning groove 33, when the lock rod 3 moves away from the engaging portion 11 to the unlocking position, the positioning column 221 moves downward to the opening position of the positioning groove 33 under the action of the limiting spring 6, at this time the second outer wall 223 occupies the locking position and abuts with the positioning groove 33 to prevent the lock rod 3 from resetting.

[0055] Preferably, the bottom of the lower cover body 22 is provided with a through hole for the first outer wall 222 to pass through, so as to facilitate the cooperation of the positioning column 221 with the machine body 1.

[0056] In this embodiment, in order to reset the positioning column 221 when the lower cover body 22 cooperates with the machine body 1, so that the lock rod 3 moves towards the engaging portion 11, an abutting portion 12 is arranged on the machine body 1 and faces the positioning column 221, the abutting portion 12 extends towards the lower cover body 22 and contacts the end of the positioning column 221 when the lower cover body 22 is closed to the machine body 1.

[0057] When the lower cover body 22 reaches the closed position, the abutment portion 12 is pressed against the positioning column 221 with the closing of the lower cover body 22, so that the first outer wall 222 is in butt joint with the positioning groove 33. Since the first outer wall 222 is matched with the opening of the positioning groove 33, at this time the lock rod 3 is reset to the locked position under the pressing action of the transmission shaft 211 on the guide groove 31. Through the above improvement, the locking state of the lock rod 3 is maintained through the design of the first outer wall 222 and the second outer wall 223, and is realized simultaneously with the action of the lower cover body 22. The structure is simple and the action is reliable, which ensures the effective realization of the anti-misoperation function.

[0058] Further referring to Figure 8 , the lower cover body 22 is provided with a positioning seat 224 which is in butt joint with the abutment portion 12. The positioning seat 224 is specifically arranged on the bottom of the lower cover body 22 at the side of the through hole, thereby realizing the positioning action of the lower cover body 22 and the end surface of the machine body 1.

[0059] As a further embodiment of the assembly of the lock rod 3 in the lower cover body 22, further, the lower cover body 22 is provided with a mounting shell 4, and a translation space is defined between the mounting shell 4 and the lower cover body 22. The lock rod 3 is constrained to translate in the translation space between the lower cover body 22 and the mounting shell 4. Further, a guide rib which is in butt joint with the lock rod 3 is arranged between the lower cover body 22 and the mounting shell 4. The guide rib is specifically arranged on the end surface of the lock rod 3 which faces the mounting shell 4 and the lower cover body 22. The guide rib includes a first rib 41 arranged on the mounting shell 4 and abutting against the upper end surface of the lock rod 3, and a second rib 227 arranged on the lower cover body 22 and at both sides of the locking portion 32. Thus, the stable constraint of the lock rod 3 is formed. The guide rib ensures that the lock rod 3 can only smoothly translate in the preset direction, so that the sliding of the lock rod 3 is more smooth. In addition, the cooperation of the mounting shell 4 and the lower cover body 22 realizes the transmission of the lock rod 3 to the lower cover body 22 in the opening trajectory. Thus, the lock rod 3 not only serves as a locking member of the lower cover body 22, but also serves as a transmission member between the upper cover body 21 and the lower cover body 22.

[0060] As shown in Figure 10 and Figure 11 , as a further optimization of the lock rod 3 in the unlocking stroke and the locking stroke, the lower cover body 22 is provided with a power spring 5 which is in butt joint with the lock rod 3. The power spring 5 is arranged in the unlocking direction of the lock rod 3. One end of the power spring 5 is in butt joint with the mounting shell 4, and the other end is in butt joint with the lock rod 3. The power spring 5 provides auxiliary elastic force for the unlocking movement of the lock rod 3, so as to drive the lock rod 3 to move towards the unlocking direction. This makes the user more labor-saving when opening the upper cover body 21, and the hand feeling is more convenient. At the same time, it is also helpful to ensure that the unlocking action can be completed thoroughly, and to improve the smoothness and user experience of opening and unlocking. In the closing trajectory, when the transmission shaft 211 travels to the locking stroke, the force of the power spring 5 needs to be overcome, so as to provide a reliable operation feeling for the user to close the lock.

[0061] As Figure 12 and Figure 13 shown, in some other embodiments, to further improve the smoothness of the action of the lock rod 3, a sliding groove 34 is arranged in the middle of the lock rod 3, the sliding groove 34 is arranged along the translation direction of the lock rod 3, a guide column 225 is arranged in the sliding groove 34, the guide column 225 is fixedly connected with the mounting shell 4, thereby further enhancing the stability of the movement trajectory of the lock rod 3, the guide column 225 moves in the sliding groove 34, effectively preventing the lock rod 3 from producing deflection or warping during translation, ensuring the cooperation precision of the transmission shaft 211 and the guide groove 31, thereby making the linkage process more smooth and reliable, at the same time, the guide column 225 also serves as a connecting member of the mounting shell 4, further improving the structural compactness of the inside of the cover 2.

[0062] Further, the upper cover body 21 includes a mounting wall 212 connected to one end of the transmission shaft 211, and a fixed sheet 213 detachably connected to the other end of the transmission shaft 211, the lock rod 3 is provided with an ear portion constrained between the mounting wall 212 and the fixed sheet 213, the guide groove 31 is formed on the ear portion, the detachable structure formed by the mounting wall 212 and the fixed sheet 213 allows the transmission shaft 211 to conveniently pass through the ear portion on the lock rod 3 and be reliably fixed, the assembly process is simple, at the same time, the mounting wall 212 and the fixed sheet 213 realize the limiting of the transmission shaft 211 in the guide groove 31, effectively preventing the transmission shaft 211 from coming out of the guide groove 31.

[0063] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and those skilled in the art can make modifications without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A locking structure of a coffee machine cover, comprising a machine body (1) and a cover (2) rotatably arranged on the machine body (1), characterized in that, The machine cover (2) comprises an upper cover body (21) and a lower cover body (22) arranged around a rotation axis, the lower cover body (22) is engaged with the machine body (1) and constitutes an extraction cavity (7), a lock rod (3) is slidably arranged in the lower cover body (22), one end of the lock rod (3) is provided with a guide groove (31), the other end of the lock rod (3) is provided with a locking portion (32), the machine body (1) is provided with an engaging portion (11), the engaging portion (11) cooperates with the locking portion (32) to keep the machine cover (2) on the machine body (1); The upper cover body (21) is configured with a rotation opening track and a rotation closing track, and a transmission shaft (211) is arranged on the upper cover body (21) and located in the guide groove (31), the guide groove (31) is located in the rotation track and is arranged obliquely relative to the sliding direction of the lock rod (3), the transmission shaft (211) abuts against the guide groove (31) in the opening track and drives the lock rod (3) to move away from the engaging portion (11) to an unlocking position, and the transmission shaft (211) drags the lower cover body (22) to rotate at the end of the guide groove (31).

2. The locking structure of a coffee maker cover according to claim 1, characterized in that: The transmission shaft (211) actuates the lower cover body (22) to rotate to a closed position engaged with the machine body (1) through the end of the guide groove (31) in the closing track, and the upper cover body (21) is raised relative to the lower cover body (22), and a locking stroke of the lock rod (3) entering the engaging portion (11) is defined along the guide groove (31) in the closing track.

3. The coffee maker lid locking structure according to claim 2, wherein: The guide groove (31) defines an unlocking stroke in the rotation opening track, the lower cover body (22) is flush with the machine body (1) in the unlocking stroke and the locking stroke, the locking portion (32) is arranged opposite to the engaging portion (11), the upper cover body (21) rotates relative to the lower cover body (22), and the movement of the transmission shaft (211) in the guide groove (31) corresponds to driving the lock rod (3) to unlock or lock relative to the engaging portion (11).

4. The coffee maker lid locking structure according to claim 1, wherein: The end of the guide groove (31) defines an initial slot (311) configured to receive and position the transmission shaft (211) to keep the lower cover body (22) in a locked position where the locking portion (32) cooperates with the engaging portion (11).

5. The coffee maker lid locking structure according to claim 1, wherein: The lower cover body (22) is provided with an elastically movable positioning column (221), the lock rod (3) is provided with a positioning groove (33) opening towards the engaging portion (11), the positioning column (221) has a second outer wall (223) larger than the opening of the positioning groove (33), in the unlocking position, the second outer wall (223) is exposed to the positioning groove (33) and prevents the lock rod (3) from cooperating with the engaging portion (11); in the locking stroke, the machine body (1) abuts against the positioning column (221) and drives the second outer wall (223) away from the positioning groove (33) to allow the lock rod (3) to move towards the engaging portion (11).

6. The coffee maker lid locking structure according to claim 5, wherein: The positioning column (221) has a first outer wall (222) matched with the opening of the positioning groove (33), and a second outer wall (223) is arranged at the first outer wall (222) in the moving direction of the positioning column (221); The machine body (1) is provided with an abutting portion (12) arranged towards the positioning column (221), the abutting portion (12) abuts against the positioning column (221) with the closing of the lower cover body (22), so that the first outer wall (222) is in butt joint with the positioning groove (33), and the bottom of the lower cover body (22) is provided with a positioning seat (224) in butt joint with the abutting portion (12).

7. The coffee maker lid locking structure according to claim 1, wherein: The lower cover body (22) is provided with a mounting shell (4), the lock rod (3) is constrained to translate between the lower cover body (22) and the mounting shell (4), and the lower cover body (22) and the mounting shell (4) are provided with a guide rib abutting against the lock rod (3).

8. The coffee maker lid locking structure according to claim 1, wherein: The lower cover body (22) is provided with a booster spring (5) abutting against the lock rod (3), the booster spring (5) is arranged in the unlocking direction of the lock rod (3), and the elastic force of the booster spring (5) drives the lock rod (3) to move towards the unlocking direction.

9. The coffee maker lid locking structure according to claim 7, wherein: The middle part of the lock rod (3) is provided with a sliding groove (34), the lower cover body (22) is provided with a guide column (225) arranged in the sliding groove (34), and the guide column (225) is fixedly connected with the mounting shell (4).

10. The coffee maker lid locking structure according to claim 1, wherein: The upper cover body (21) includes a mounting wall (212) connected to one end of the transmission shaft (211), and a fixing sheet (213) detachably connected to the other end of the transmission shaft (211), the lock rod (3) is provided with an ear portion constrained between the mounting wall (212) and the fixing sheet (213), and the guide groove (31) is formed on the ear portion.

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