Rotating head-up display coffee machine

Abstract

This utility model belongs to the field of coffee machine technology, and particularly relates to a rotating head-up display coffee machine, including a base, a rotating panel, and an elastic locking mechanism. The rotating panel is rotatably connected to the base; the elastic locking mechanism is disposed on the base and used to lock and restrict the rotating panel on the base; wherein, the base is provided with a receiving groove, one end of the rotating panel is connected to one end of the receiving groove, and the elastic locking mechanism is disposed at the other end of the receiving groove. When the free end of the rotating panel is reset in the receiving groove, the elastic locking mechanism locks and fixes the free end of the rotating panel. According to one's own viewing angle or operating environment, the free end of the rotating panel can be easily pressed down to release the elastic locking, and after the panel is rotated to a comfortable angle, it can be released, and the elastic locking mechanism will automatically and firmly lock its new position, ensuring that the screen angle is flexibly adjustable during operation and observation; when it is necessary to reset, the free end of the panel is rotated back into the receiving groove, and the locking mechanism will reliably fix it, restoring it to a flat state.

Description

Technical Field

[0001] This utility model belongs to the field of coffee machine technology, and in particular relates to a rotating head-up display coffee machine. Background Technology

[0002] In traditional coffee machine designs, the user interface, including the display screen and control panel, is typically integrated into the machine body with a fixed physical structure. This integration means that the orientation and angle of the display screen and control panel cannot be changed after the coffee machine is manufactured. Common setups include placing the user interface horizontally on the top platform of the coffee machine or vertically on the front panel area. Regardless of the initial setup, the display and control surfaces remain rigidly connected to the main structure of the coffee machine, making it impossible to adjust the viewing angle or operating angle during use.

[0003] This fixed-angle design has significant technical flaws. Because the angles of the display screen and control panel cannot be adjusted to suit the user's height, operating habits, or the actual placement of the coffee machine (e.g., on a countertop or in a cabinet), users are often forced to accept unfavorable viewing angles. This can lead to users adopting uncomfortable postures such as bending over, stooping, or tiptoeing to see screen information or accurately operate buttons, especially in poor lighting conditions or confined spaces, making the user experience even more inconvenient. Furthermore, the fixed angle makes it difficult to find the most comfortable wiping direction when cleaning the screen and panel, increasing maintenance difficulty. This inflexible design fundamentally limits the comfort and convenience of user interaction with the coffee machine, resulting in a poor overall user experience. Utility Model Content

[0004] The purpose of this invention is to provide a rotating head-up display coffee machine, which aims to solve the technical problem that existing coffee machines use display screens and operation panels set at fixed angles, which limits the comfort and convenience of user interaction with the coffee machine and results in a poor overall user experience.

[0005] To achieve the above objectives, this utility model provides a rotating head-up display coffee machine, including a base, a rotating panel, and an elastic locking mechanism. The rotating panel is rotatably connected to the base; the elastic locking mechanism is disposed on the base and used to lock and restrict the rotating panel on the base; wherein, the base is provided with a receiving groove, one end of the rotating panel is connected to one end of the receiving groove, and the elastic locking mechanism is disposed at the other end of the receiving groove. When the free end of the rotating panel is reset in the receiving groove, the elastic locking mechanism locks and fixes the free end of the rotating panel.

[0006] Optionally, the base includes a fixed seat and a top plate. The top plate is fixedly mounted on the fixed seat. The receiving groove is formed at one end of the top plate. The fixed seat is provided with an installation cavity. A pressing mechanism for squeezing coffee capsules is provided in the installation cavity. The handle of the pressing mechanism extends outside the fixed seat and is rotatably connected to the end of the top plate away from the receiving groove. The end of the rotating panel is rotatably connected to the top plate.

[0007] Optionally, the rotating panel is provided with a flat plate-shaped structure, and when the rotating panel is rotated back into the receiving groove, the end face of the rotating panel is flush with the top surface of the top plate.

[0008] Optionally, the rotating panel includes a movable seat, an interactive unit, and a rotating connection assembly. The rotating connection assembly is disposed within the top plate. The end of the movable seat passes through the side wall of the receiving groove and is fixedly connected to the rotating end of the rotating connection assembly. The interactive unit is disposed on the movable seat. The side wall of the receiving groove is provided with a clearance groove for avoiding the end of the movable seat.

[0009] Optionally, the rotary connection assembly includes a connecting seat and a pivot. The connecting seat is fixedly disposed in the top plate and located on one side of the clearance groove. The end of the movable seat passes through the clearance groove and extends to one side of the connecting seat. The connecting seat is provided with a rotary groove. The end of the movable seat is provided with a rotating hole. The pivot is rotatably connected in the rotating hole and the rotary groove.

[0010] Optionally, the end of the movable seat away from the rotary connection assembly is provided with a protrusion for easy gripping by the user, and the end of the protrusion extends outside the receiving groove.

[0011] Optionally, the pivot is damped and rotatably connected to the rotating hole and the rotating groove.

[0012] Optionally, the elastic locking mechanism includes a mounting base, an elastic element, a sliding shaft, and a locking block. The mounting base is fixedly disposed within the fixed base, and a sliding groove is provided within the mounting base. The elastic element is disposed within the sliding groove, with both ends of the elastic element abutting against the inner wall of the sliding groove and the locking block, respectively. The sliding shaft is disposed at one end of the locking block near the elastic element. Both the sliding shaft and the locking block are slidably connected within the sliding groove. A locking seat is provided at the bottom of the rotating panel. The end of the locking seat can move with the rotating panel to below the receiving groove and through the moving path of the locking block. The locking seat is provided with a locking groove for engaging and adapting to the locking block.

[0013] Optionally, the elastic element is a compression spring, which is wound around the slide shaft. The slide groove passes through the locking seat, and the slide shaft can extend out of the slide groove. The two ends of the elastic element abut against the inner wall of the slide groove and the end of the locking block, respectively.

[0014] Optionally, the locking seat is provided with a conical structure, and the bottom wall of the receiving groove is recessed downward to align with the position of the locking seat to form a clearance groove for avoiding the locking seat. The side wall of the clearance groove is provided with a through groove for the locking block to pass through. When the locking seat rotates and moves with the rotating panel and resets in the clearance groove, the locking groove aligns with the through groove.

[0015] The rotating head-up display coffee machine provided in this embodiment of the present invention has at least one of the following technical effects: by setting a rotating panel that can rotate relative to the base, and cooperating with the base receiving groove and the elastic locking mechanism, the defect of the fixed angle of the operating interface of traditional coffee machines is effectively overcome. Users can easily press down the free end of the rotating panel to release the elastic locking according to their own viewing needs or operating environment, rotate the panel to a comfortable angle, and release it. The elastic locking mechanism will automatically and securely lock it in its new position, ensuring that the screen angle is flexibly adjustable during operation and observation. When it needs to be reset, simply rotate the free end of the panel back into the receiving groove, and the locking mechanism will reliably fix it, restoring it to a flat state. This design fundamentally solves the problem of users being forced to adopt unfavorable postures for operation or observation due to the fixed screen angle, significantly improving the comfort and convenience of interaction, and also facilitating cleaning and maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram illustrating the rotation of the rotating panel and base provided in an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the rotating panel during reset.

[0019] Figure 3 This is a cross-sectional schematic diagram of a rotating head-up display coffee machine provided in an embodiment of the present invention.

[0020] Figure 4 This is a structural schematic diagram of a rotating head-up display coffee machine provided in an embodiment of the present invention.

[0021] Figure 5 An exploded view of the base, rotating panel, and elastic locking mechanism provided in an embodiment of this utility model.

[0022] Figure 6 An exploded view of the base, rotating panel, and elastic locking mechanism from another angle, as provided in an embodiment of this utility model.

[0023] Figure 7 An exploded view of the base, rotating panel, and elastic locking mechanism from another angle, as provided in an embodiment of this utility model.

[0024] Figure 8 This is a cross-sectional schematic diagram of the base, rotating panel, and elastic locking mechanism from another angle, as provided in an embodiment of the present invention.

[0025] The following are the labeling elements in the figure:

[0026] 100—Base; 200—Rotating panel; 300—Elastic locking mechanism

[0027] 400—Receiving slot 110—Fixed seat 120—Top plate

[0028] 130—Installation cavity 500—Pressure packing mechanism 210—Moving seat

[0029] 220—Interaction Unit; 230—Rotary Connection Assembly; 410—Leaving Slot

[0030] 231—Connecting seat; 232—Pivot; 233—Rotating groove

[0031] 211—Hole; 212—Protrusion; 310—Mounting base

[0032] 320—Elastic element; 330—Sliding shaft; 340—Snap-fit ​​block

[0033] 350—Slide rail; 360—Snap-in connector; 370—Snap-in slot

[0034] 430—Void avoidance slot; 440—Through slot. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figures 1-8 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0039] One embodiment of this utility model provides a rotating head-up display coffee machine, such as... Figures 1-8 As shown, the device includes a base 100, a rotating panel 200, and an elastic locking mechanism 300. The rotating panel 200 is rotatably connected to the base 100. The elastic locking mechanism 300 is disposed on the base 100 and is used to lock and restrict the rotating panel 200 on the base 100. The base 100 is provided with a receiving groove 400. One end of the rotating panel 200 is connected to one end of the receiving groove 400, and the elastic locking mechanism 300 is disposed at the other end of the receiving groove 400. When the free end of the rotating panel 200 is reset in the receiving groove 400, the elastic locking mechanism 300 locks and fixes the free end of the rotating panel 200.

[0040] By incorporating a rotating panel 200 that can rotate relative to the base 100, along with the base 100's receiving groove 400 and the elastic locking mechanism 300, the drawback of the fixed angle of the traditional coffee machine's operating interface is effectively overcome. Users can easily press down the free end of the rotating panel 200 to release the elastic lock, rotate the panel to a comfortable angle, and release it. The elastic locking mechanism 300 will automatically and securely lock it in its new position, ensuring flexible adjustment of the screen angle during operation and observation. When resetting is required, simply rotate the free end of the panel back into the receiving groove 400, and the locking mechanism will reliably fix it, restoring it to a flat state. This design fundamentally solves the problem of users being forced to adopt unsuitable postures for operation or observation due to a fixed screen angle, significantly improving interactive comfort and convenience, while also facilitating cleaning and maintenance.

[0041] like Figures 1-8 As shown, in another embodiment of this utility model, the base 100 includes a fixed base 110 and a top plate 120. The top plate 120 is fixedly disposed on the fixed base 110. The receiving groove 400 is formed at one end of the top plate 120. The fixed base 110 is provided with an installation cavity 130. A pressing mechanism 500 for compressing coffee capsules is disposed in the installation cavity 130. The handle of the pressing mechanism 500 extends outside the fixed base 110 and is rotatably connected to the end of the top plate 120 away from the receiving groove 400. The end of the rotating panel 200 is rotatably connected to the top plate 120. The handle of the pressing mechanism 500 is independently arranged on the side of the top plate 120 away from the rotating panel 200. When the rotating panel 200 rotates around its connection point with the top plate 120, the handle will not interfere with the rotation of the rotating panel 200 due to the separation of its position. By separating the coffee capsule pressing mechanism 500 handle from the rotating panel 200, the coffee capsule pressing function is retained while ensuring that there is no mechanical conflict when adjusting the angle of the rotating panel 200. This solves the problem of limited space for adjustable structure design caused by the stacking of multi-functional components in traditional coffee machines, and fundamentally releases the freedom of adjustment of the interactive interface.

[0042] like Figures 1-8 As shown, in another embodiment of this utility model, the rotating panel 200 is configured with a flat, plate-like structure. When the rotating panel 200 is rotated back into the receiving groove 400, the end face of the rotating panel 200 is flush with the top surface of the top plate 120. When the rotating panel 200 is rotated downwards to its limit position, its free end is completely embedded in the receiving groove 400, and the upper surface of the panel forms a continuous flat plane with the top surface of the top plate 120. In the reset state, the rotating panel 200 and the top plate 120 are seamlessly connected, completely eliminating the steps or gaps formed by the fixed angle of the traditional coffee machine operating interface, solving the problem of hard-to-clean corners where debris and liquid easily accumulate during cleaning, while maintaining the overall integrity and aesthetics of the equipment.

[0043] like Figures 1-8 As shown, in another embodiment of this utility model, the rotating panel 200 includes a movable base 210, an interactive unit 220, and a rotating connection assembly 230. The rotating connection assembly 230 is disposed within the top plate 120. The end of the movable base 210 passes through the side wall of the receiving groove 400 and is fixedly connected to the rotating end of the rotating connection assembly 230. The interactive unit 220 is disposed on the movable base 210. The side wall of the receiving groove 400 is provided with a clearance groove 410 for avoiding collision between the end of the movable base 210 and the side wall of the receiving groove 400. The movable base 210 drives the interactive unit 220 to rotate via the rotating connection assembly 230. The clearance groove 410 provides lateral space to avoid collision between the end of the movable base 210 and the side wall of the receiving groove 400 when the movable base 210 rotates. The opening of the clearance groove 410 allows the rotating component to be completely concealed within the structure of the top plate 120, solving the risk that exposed rotating parts are easily blocked by foreign objects or damaged by accidental contact, significantly improving the reliability and service life of the adjustment mechanism, while ensuring that there is no mechanical interference during the rotation process.

[0044] like Figures 1-8 As shown, in another embodiment of this utility model, the rotary connecting assembly 230 includes a connecting seat 231 and a pivot 232. The connecting seat 231 is fixedly disposed within the top plate 120 and located on one side of the clearance groove 410. The end of the movable seat 210 passes through the clearance groove 410 and extends to one side of the connecting seat 231. The connecting seat 231 is provided with a rotating groove 233. The end of the movable seat 210 is provided with a rotating hole 211. The pivot 232 is rotatably connected in the rotating hole 211 and the rotating groove 233. The pivot 232 simultaneously passes through the rotating hole 211 of the movable seat 210 and forms a coaxial rotating pair with the rotating groove 233 of the connecting seat 231. The movable seat 210 rotates about the pivot 232 as the center. The pivot 232 connection provides a stable rotation fulcrum, overcoming the screen shaking problem caused by the loosening of traditional hinge structures, ensuring that the interaction unit 220 has no displacement or drift after being locked at any angle, and improving the stability of the interface and visual clarity during user operation.

[0045] like Figures 1-8 As shown, in another embodiment of this utility model, the end of the movable seat 210 away from the rotating connecting assembly 230 is provided with a protrusion 212 for convenient gripping by the user, and the end of the protrusion 212 extends outside the receiving groove 400. The user's fingers can naturally hook onto the protrusion 212 to lift or press down, driving the rotating panel 200 to rotate around the pivot 232 through leverage. The protrusion 212, as a humanized force application point, solves the problem of difficult angle adjustment caused by the difficulty in gripping the smooth panel, and is especially suitable for scenarios where hands are wet or the operating space is limited, greatly improving the convenience and safety of adjustment.

[0046] like Figures 1-8 As shown, in another embodiment of this utility model, the pivot 232 is damped and rotatably connected to the rotating hole 211 and the rotating groove 233. When the pivot 232 rotates within the rotating hole 211 and the rotating groove 233, it generates constant frictional resistance, requiring an external force to change the angle of the rotating panel 200. After the external force is removed, it automatically maintains its current position. This damping design allows the rotating panel 200 to be suspended at any angle without relying on frequent opening and closing of the locking mechanism, solving the cumbersome operation of repeated locking during multi-angle fine-tuning and achieving an integrated user experience of "stepless adjustment - instantaneous fixation".

[0047] like Figures 1-8 As shown, in another embodiment of this utility model, the elastic locking mechanism 300 includes a mounting base 310, an elastic element 320, a sliding shaft 330, and a locking block 340. The mounting base 310 is fixedly disposed within the fixed base 110, and a sliding groove 350 is provided within the mounting base 310. The elastic element 320 is disposed within the sliding groove 350, and both ends of the elastic element 320 abut against the inner wall of the sliding groove 350 and the locking block 340, respectively. The sliding shaft 330 is disposed within the sliding groove 350. At the end of the locking block 340 near the elastic member 320, both the sliding shaft 330 and the locking block 340 are slidably connected within the sliding groove 350. A locking seat 360 is provided at the bottom of the rotating panel 200. The end of the locking seat 360 moves with the rotating panel 200 to below the receiving groove 400 and through the moving path of the locking block 340. The locking seat 360 is provided with a locking slot 370 for engaging and fitting the locking block 340. When the rotating panel 200 is pressed down to reset, the locking seat 360 pushes the locking block 340 to compress the elastic member 320 and retract until the locking slot 370 moves to the position of the locking block 340. The elastic member 320 then pushes the locking block 340 into the locking slot 370 to complete the locking. When unlocking, the free end of the driving panel moves upward, forcing the locking block 340 out of the locking slot 370. The purely mechanical locking structure solves the safety hazard of traditional magnetic locking that is prone to accidental disengagement due to vibration or external force through the rigid engagement of the locking block 340 and the locking slot 370, ensuring that the panel is free from loosening and abnormal noise in the reset state, and meeting the reliability requirements of high-frequency use.

[0048] like Figures 1-8As shown, in another embodiment of this utility model, the elastic element 320 is a compression spring, which is wound around the slide shaft 330. The slide groove 350 passes through the locking seat 360, and the slide shaft 330 can extend out of the slide groove 350. The two ends of the elastic element 320 abut against the inner wall of the slide groove 350 and the end of the locking block 340, respectively. The slide shaft 330 slides linearly within the slide groove 350 and guides the compression spring to extend and retract in a directional manner. The spring's restoring force is evenly transmitted to the locking block 340 through the slide shaft 330. The guiding mechanism of the slide shaft 330 avoids the problem of the locking block 340 becoming misaligned and jammed due to spring overload, solves the problem of sluggish action that occurs after long-term use of the elastic locking mechanism 300, and ensures the smoothness and consistent lifespan of the locking action.

[0049] like Figures 1-8 As shown, in another embodiment of this utility model, the latching seat 360 is cone-shaped. The bottom wall of the receiving groove 400 is recessed downwards to align with the position of the latching seat 360, forming a clearance groove 430 for preventing the latching seat 360 from being obstructed. A through groove 440 is provided on the side wall of the clearance groove 430 for the latching block 340 to pass through. When the latching seat 360 rotates and moves with the rotating panel 200 and resets within the clearance groove 430, the latching slot 370 aligns with the through groove 440. The cone-shaped structure of the latching seat 360 guides the latching block 340 to slide into the latching slot 370, the clearance groove 430 provides downward space for the latching seat 360, and the through groove 440 allows the latching block 340 to be horizontally inserted into the latching slot 370. The combination of the conical guide and the clearance groove 430 enables automatic alignment tolerance during the locking process, solving the manufacturing tolerance sensitivity problem caused by precision assembly requirements, reducing production costs while ensuring the locking reliability of different batches of products.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary take-out display coffee machine, characterized in that, include: Base; A rotating panel, which is rotatably connected to the base; An elastic locking mechanism is disposed on the base and used to lock and restrict the rotating panel on the base; The base is provided with a receiving groove, one end of the rotating panel is connected to one end of the receiving groove, and the elastic locking mechanism is provided at the other end of the receiving groove. When the free end of the rotating panel is reset in the receiving groove, the elastic locking mechanism locks and fixes the free end of the rotating panel.

2. The rotating head-up display coffee machine according to claim 1, characterized in that: The base includes a fixed seat and a top plate. The top plate is fixedly mounted on the fixed seat. The receiving groove is formed at one end of the top plate. The fixed seat is provided with an installation cavity. A pressing mechanism for squeezing coffee capsules is provided in the installation cavity. The handle of the pressing mechanism extends outside the fixed seat and is rotatably connected to the end of the top plate away from the receiving groove. The end of the rotating panel is rotatably connected to the top plate.

3. The rotating head-up display coffee machine according to claim 2, characterized in that: The rotating panel has a flat, plate-like structure. When the rotating panel rotates back into the receiving groove, the end face of the rotating panel is flush with the top surface of the top plate.

4. The rotating head-up display coffee machine according to claim 2, characterized in that: The rotating panel includes a movable base, an interactive unit, and a rotating connection assembly. The rotating connection assembly is disposed within the top plate. The end of the movable base passes through the side wall of the receiving groove and is fixedly connected to the rotating end of the rotating connection assembly. The interactive unit is disposed on the movable base. The side wall of the receiving groove is provided with a clearance groove for avoiding the end of the movable base.

5. The rotating head-up display coffee machine according to claim 4, characterized in that: The rotating connection assembly includes a connecting seat and a pivot. The connecting seat is fixedly disposed in the top plate and located on one side of the clearance groove. The end of the movable seat passes through the clearance groove and extends to one side of the connecting seat. The connecting seat is provided with a rotating groove. The end of the movable seat is provided with a rotating hole. The pivot is rotatably connected in the rotating hole and the rotating groove.

6. The rotating head-up display coffee machine according to claim 4, characterized in that: The movable seat has a protrusion at the end away from the rotating connection assembly for easy gripping by the user, and the end of the protrusion extends outside the receiving groove.

7. The rotating head-up display coffee machine according to claim 5, characterized in that: The pivot is damped and rotatably connected to the rotating hole and the rotating groove.

8. The rotating head-up display coffee machine according to claim 2, characterized in that: The elastic locking mechanism includes a mounting base, an elastic element, a sliding shaft, and a locking block. The mounting base is fixedly disposed within the fixed base, and a sliding groove is provided within the mounting base. The elastic element is disposed within the sliding groove, with both ends of the elastic element abutting against the inner wall of the sliding groove and the locking block, respectively. The sliding shaft is disposed at the end of the locking block near the elastic element. Both the sliding shaft and the locking block are slidably connected within the sliding groove. A locking seat is provided at the bottom of the rotating panel. The end of the locking seat can move with the rotating panel to below the receiving groove and through the moving path of the locking block. The locking seat is provided with a locking groove for engaging and adapting to the locking block.

9. The rotating head-up display coffee machine according to claim 8, characterized in that: The elastic element is a compression spring, which is wound and connected to the slide shaft. The slide groove passes through the locking seat, and the slide shaft can pass through the slide groove. The two ends of the elastic element abut against the inner wall of the slide groove and the end of the locking block, respectively.

10. The rotating head-up display coffee machine according to claim 9, characterized in that: The locking seat is cone-shaped. The bottom wall of the receiving groove is recessed downwards to align with the position of the locking seat, forming a clearance groove for avoiding the locking seat. The side wall of the clearance groove is provided with a through groove for the locking block to pass through. When the locking seat rotates and moves with the rotating panel and resets in the clearance groove, the locking groove aligns with the through groove.

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