Changeover switch and coffee machine

Abstract

This application provides a changeover switch and a coffee machine. The changeover switch includes: a mounting bracket assembly fixed to the body of the coffee machine; a rotating assembly rotatably mounted on the mounting bracket assembly, having an initial position, a first working position, and a second working position; a control assembly connected to the rotating assembly, used to drive the rotating assembly to rotate, thereby switching the rotating assembly from the initial position to the first working position or the second working position, and from the first working position back to the initial position; a reset assembly mounted on the mounting bracket assembly, used to automatically switch the rotating assembly from the second working position to the initial position; and a positioning assembly mounted on the mounting bracket assembly, used to position the rotating assembly from the first working position, so that the rotating assembly remains in the first working position. The changeover switch of this application can automatically reset to the initial position when in the second working position without user operation, improving the user experience.

Description

Technical Field

[0001] This application belongs to the field of small household appliance technology, and in particular relates to a changeover switch and a coffee machine having the changeover switch. Background Technology

[0002] Traditional espresso machines typically have a fixed steam switch that doesn't automatically spring back. However, since most users start the machine with a cold steam hose, they need to activate the steam system first to preheat the hose or flush away any residual water. Skipping this step increases the water content of the milk, affecting its taste and overall user experience. Therefore, users must first turn on the steam switch to preheat or flush the hose before using steam to froth the milk, then turn it off, place the milk cup in the machine, and manually turn the switch back on. This cumbersome operation results in multiple steps and a poor user experience. Summary of the Invention

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of this application is to provide a changeover switch and a coffee machine having the changeover switch.

[0004] The technical solution adopted in this application embodiment is a changeover switch for use on a coffee machine to control the opening and closing of the coffee machine's steam system. The changeover switch includes:

[0005] A mounting bracket assembly is fixed to the body of the coffee machine;

[0006] A rotating assembly is rotatably mounted on the fixed frame assembly and has an initial position, a first working position that rotates by a first preset angle along a first direction from the initial position, and a second working position that rotates by a second preset angle along a second direction from the initial position, wherein the first direction is opposite to the second direction;

[0007] A control component, connected to the rotating component, is used to drive the rotating component to rotate, so that the rotating component switches from the initial gear to the first working gear or the second working gear, and switches from the first working gear to the initial gear;

[0008] A reset component, disposed on the fixed frame assembly, is used to automatically switch the rotating component, which is in the second working position, to the initial position.

[0009] A positioning component, disposed on the fixing frame assembly, is used to position the rotating component in the first working position so that the rotating component is held in the first working position.

[0010] In an optional embodiment, the rotating assembly includes a rotating shaft and a first wheel portion disposed on the rotating shaft. The outer peripheral surface of the first wheel portion is provided with a groove group, the groove group including a first groove and a second groove.

[0011] The positioning assembly includes a push rod assembly, which includes a push rod and a push rod spring. The push rod spring applies a force to the push rod, causing it to move towards the first wheel portion. When the rotating assembly is in the initial position, a first groove on the first wheel portion faces the push rod, and the push rod extends into the first groove under the force applied by the push rod spring. When the rotating assembly is in the first working position, a second groove on the first wheel portion faces the push rod, and the push rod extends into the second groove under the force applied by the push rod spring. By providing a groove assembly on the outer circumferential surface of the first wheel portion of the rotating assembly, the push rod can position the rotating assembly in both the initial and first working positions, thus maintaining the rotating assembly in its designated position.

[0012] In an optional embodiment, the fixing frame assembly includes a push rod bracket fixed to the body of the coffee machine. The push rod bracket includes an annular housing and two protrusions symmetrically arranged on the outer periphery of the annular housing. Each protrusion has a cavity. The annular housing has a through hole corresponding to the position of the protrusion and communicating with the cavity. Each of the two protrusions has a set of push rod assemblies in its cavity, and the push rod of the push rod assembly can extend into the annular housing through the through hole.

[0013] The rotating shaft passes through the push rod bracket, and the first wheel portion of the rotating shaft is located inside the annular housing. The outer circumferential surface of the first wheel portion is provided with two sets of grooves that respectively mate with the two sets of push rod assemblies. The structure is reasonable and compact, facilitating the installation of the push rod assemblies and ensuring precise insertion of the push rod into the groove of the first wheel portion.

[0014] In an optional embodiment, the rotating assembly further includes a second wheel portion disposed on the rotating shaft, wherein the outer periphery of the second wheel portion is partially provided with gear teeth;

[0015] The reset assembly includes a gear and a torsion spring acting on the gear, wherein the outer periphery of the gear has teeth.

[0016] In this process, during the rotation of the rotating component from the initial gear to the second working gear along the second direction driven by the control component, the teeth of the second wheel mesh with the teeth of the gear, causing the torsion spring to accumulate elastic potential energy. When the force acting on the control component is removed, the torsion spring releases its elastic potential energy and drives the gear to rotate along the second direction. The gear, through meshing with the second teeth, drives the rotating component to rotate along the first direction, thus resetting it from the second working gear to the initial gear. In this way, under the action of the reset component, the rotating component can automatically reset from the second working gear to the initial gear without user operation, simplifying the operation steps and improving the user experience.

[0017] In an optional embodiment, the fixing frame assembly further includes a bracket base and a bracket rear cover, the bracket base and the bracket rear cover being fastened to the rotating shaft from both sides in the radial direction of the rotating shaft to restrict axial displacement of the rotating shaft; the first wheel portion and the second wheel portion are both exposed outside the bracket base and the bracket rear cover.

[0018] In an optional embodiment, the rotating shaft is further provided with an arc-shaped or annular protrusion, the protrusion being located between the first wheel portion and the second wheel portion, and the outer peripheral surface of the protrusion is partially recessed inward to form a first recess and a second recess;

[0019] The fixing frame assembly further includes a fixing block, which is fixed to the bracket base;

[0020] The positioning assembly further includes a positioning pin and a positioning pin spring. One end of the positioning pin spring is connected to the fixed block, and the other end is connected to the positioning pin. The positioning pin spring applies a force to the positioning pin, causing it to move towards the convex ridge. When the rotating assembly is in the initial position, the positioning pin can pass through the bracket and extend into the first recess. When the rotating assembly is in the first working position, the positioning pin can pass through the bracket and extend into the second recess. By providing a convex ridge with a recess on the rotating shaft, and a positioning pin that can extend into the recess, the rotating assembly can be positioned in the initial and first working positions respectively. The positioning pin and the push rod work together to position the rotating assembly, ensuring that the rotating assembly can be stably maintained in the initial and first working positions.

[0021] In an optional embodiment, the movement direction of the positioning pin is perpendicular to the movement direction of the push rod. This results in better positioning.

[0022] In an optional embodiment, the outer periphery of the rotating shaft is further provided with a triggering part, and the bracket is provided with a micro switch for controlling the opening and closing of the steam system of the coffee machine. When the rotating component is in the first working position and the second working position, the triggering part on the rotating shaft can trigger the micro switch to start the steam system. When the rotating component is in the initial position, the triggering part disengages from the micro switch, releasing the triggering of the micro switch, and the steam system is turned off. Integrating multiple functions into one component not only simplifies the structure but also improves the ease of use of the product.

[0023] In an optional embodiment, the control component includes a turntable, a handle disposed on the outer circumferential surface of the turntable, and a connecting part disposed on one side of the turntable. The connecting part has a non-circular connecting cavity, and the cavity wall of the connecting cavity has a positioning groove.

[0024] One end of the rotating shaft is provided with a connector that is adapted to the shape of the connecting cavity. The outer circumferential surface of the connector is provided with a rib. The connector is inserted into the connecting cavity, and the rib is confined within the positioning groove.

[0025] When the turntable is rotated via the handle, the rotating shaft rotates accordingly. The control component has a reasonable structure, allowing the rotating shaft to rotate simultaneously with the turntable via the handle, thus enabling the rotating shaft to switch between different gear positions.

[0026] In an optional embodiment, one end of the annular housing of the top rod bracket extends inward to form an annular baffle;

[0027] The top rod support also includes a connecting sleeve, one end of which is connected to the inner periphery of the annular baffle, and the inner periphery of the connecting sleeve is provided with multiple fasteners;

[0028] The turntable is provided with multiple spring arms around the connecting part, and the free end of each spring arm is provided with a limiting hook.

[0029] Multiple spring arms extend into the connecting sleeve, and the limiting hooks of the multiple spring arms are respectively engaged with the multiple fasteners. Through the cooperation of the limiting hooks and fasteners, the turntable is positioned on the top rod bracket, and the turntable can rotate relative to the top rod bracket.

[0030] A coffee machine includes a body and a steam system disposed on the body. The coffee machine also includes a selector switch as described in any of the above embodiments for controlling the opening and closing of the steam system. Because of the user-friendly selector switch, the steam frothing process of this coffee machine is simpler, and the taste of the milk and the user experience are both superior.

[0031] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: The changeover switch of the embodiments of this application has two working positions, and in the second working position, it can automatically reset to the initial position without user operation, thus improving the user experience. Moreover, in the second working position, since the rotating component automatically resets and switches to the initial position, the steam system only generates instantaneous steam. This instantaneous steam is sufficient to meet the needs of preheating the steam pipe of the steam system or to purge residual liquid water in the steam pipe, avoiding the waste of steam caused by prolonged operation in the second working position.

[0032] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0033] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0034] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.

[0035] Figure 1 This is a three-dimensional structural diagram of the changeover switch according to an embodiment of this application.

[0036] Figure 2 This is an exploded view of the changeover switch according to an embodiment of this application.

[0037] Figure 3 This is a partial cross-sectional view of the changeover switch according to an embodiment of this application.

[0038] Figure 4 This is a front view of the rotary assembly of the changeover switch in the initial position according to an embodiment of this application.

[0039] Figure 5 and Figure 6 They are respectively Figure 4 Sectional views along the AA and BB directions.

[0040] Figure 7 for Figure 4 The C-direction view.

[0041] Figure 8 This is a front view of the rotary assembly of the changeover switch in the first working position according to an embodiment of this application.

[0042] Figure 9 and Figure 10They are respectively Figure 8 Sectional views in the DD and EE directions.

[0043] Figure 11 for Figure 8 The F-direction view.

[0044] Figure 12 This is a front view of the rotary component of the changeover switch in the second working position according to an embodiment of this application.

[0045] Figure 13 and Figure 14 They are respectively Figure 12 Cross-sectional views in the GG and HH directions.

[0046] Figure 15 for Figure 12 The I-direction view.

[0047] Figure 16 This is a three-dimensional structural diagram of a coffee machine according to an embodiment of this application.

[0048] Figure label:

[0049] 1-Fixed bracket assembly; 11-Top rod bracket; 111-Annular housing; 112-Protrusion; 113-Cavity; 114-Through hole; 115-Connecting sleeve; 116-Snap-on position; 12-Bracket base; 121-Pin hole; 13-Bracket back cover; 14-Fixing block; 15-Gear fixing plate;

[0050] 2-Rotating assembly; 21-Rotating shaft; 22-First wheel portion; 221-First groove; 222-Second groove; 223-Arc surface; 23-Second wheel portion; 24-Trigger portion; 25-Connector; 251-Protruding rib; 26-Protruding edge; 261-First recess; 262-Second recess;

[0051] 3-Control component; 31-Turntable; 32-Connecting part; 321-Connecting cavity; 33-Handle; 34-Spring arm; 341-Limit hook;

[0052] 4-Reset assembly; 41-Gear; 42-Torsion spring;

[0053] 51-Push rod; 52-Push rod spring; 53-Locking pin; 54-Locking pin spring;

[0054] 100-Main body; 101-Changeover switch; 102-Micro switch; 103-Steam system; 104-Water tank assembly; 105-Control panel assembly; 106-Brewing system; 107-Hot water system; 108-High-pressure funnel; 109-Water tray assembly. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0056] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0058] This application provides a changeover switch 101 that can be used on a coffee machine (see...). Figure 16 ), to control the opening and closing of the steam system 103 of the coffee machine.

[0059] like Figures 1 to 15 As shown, the changeover switch 101 includes a fixed frame assembly 1, a rotating assembly 2, a control assembly 3, a reset assembly 4, and a positioning assembly.

[0060] The mounting bracket 1 is fixed to the body 100 of the coffee machine. The rotating component 2, the control component 3, the reset component 4 and the positioning component are all mounted on the mounting bracket 1. The mounting bracket 1 serves as the main support for the changeover switch 101, which is mounted on the coffee machine with the help of the mounting bracket 1.

[0061] The rotating assembly 2 is rotatably mounted on the fixed frame assembly 1 and has an initial position, a first working position where it rotates a first preset angle along a first direction from the initial position, and a second working position where it rotates a second preset angle along a second direction from the initial position, wherein the first direction and the second direction are opposite. That is, the rotating assembly 2 has three positions during rotation: the initial position, and the first and second working positions located on opposite sides of the initial position. When the rotating assembly 2 is in the first and second working positions, the changeover switch 101 can control the steam system 103 of the coffee machine to start, providing steam to the coffee machine. When the rotating assembly 2 is in the initial position, the changeover switch 101 shuts off the steam system 103, preventing steam generation. The three positions of the rotating assembly 2 can also be understood as the three positions of the changeover switch 101.

[0062] The control component 3 is connected to the rotating component 2 and is used to drive the rotating component 2 to rotate, so that the rotating component 2 switches from the initial gear to the first working gear, switches from the initial gear to the second working gear, and switches from the first working gear to the initial gear.

[0063] The reset component 4 is mounted on the fixed frame assembly 1 and is used to automatically switch the rotating component 2, which is in the second working position, to the initial position. That is, when the rotating component 2 is driven to switch to the second working position by the control component 3, the rotating component 2 can automatically switch back to the initial position under the action of the reset component 4, without the user having to operate the control component 3 to switch the rotating component 2 to the initial position.

[0064] The positioning component is mounted on the fixed frame assembly 1 and is used to position the rotating component 2 in the first working position so that the rotating component 2 is kept in the first working position.

[0065] The changeover switch 101 in this embodiment has two operating positions. In the second operating position, it automatically resets to the initial position without user intervention, improving the user experience. Furthermore, in the second operating position, because the rotating component 2 automatically resets and switches to the initial position, the steam system 103 only generates instantaneous steam. This instantaneous steam is sufficient to preheat the steam pipe of the steam system 103 or purge residual liquid water from the steam pipe, avoiding steam waste caused by prolonged operation in the second operating position. In other words, the user can release steam, heat the steam pipe, and clean the steam nozzle with a single action.

[0066] In some embodiments, such as Figure 2 As shown, the rotating assembly 2 includes a rotating shaft 21 and a first wheel portion 22 disposed on the rotating shaft 21. The outer peripheral surface of the first wheel portion 22 is provided with a groove group, which includes a first groove 221 and a second groove 222.

[0067] like Figure 2 As shown, the positioning assembly includes a push rod assembly, which includes a push rod 51 and a push rod spring 52. The push rod spring 52 applies a force to the push rod 51, causing it to move towards the first wheel portion 22. When the rotating assembly 2 is in the initial position, the first groove 221 on the first wheel portion 22 is opposite to the push rod 51, and the push rod 51 extends into the first groove 221 under the force applied by the push rod spring 52. When the rotating assembly 2 is in the first working position, the second groove 222 on the first wheel portion 22 is opposite to the push rod 51, and the push rod 51 extends into the second groove 222 under the force applied by the push rod spring 52. By providing a groove assembly on the outer circumferential surface of the first wheel portion 22 of the rotating assembly 2, the push rod 51 can position the rotating assembly 2 in the initial position and the first working position respectively, thus maintaining the rotating assembly 2 in its position.

[0068] In some embodiments, such as Figure 1 and Figure 2 As shown, the mounting bracket 1 includes a push rod bracket 11, which is fixed inside the coffee machine body 100. The push rod bracket 11 includes an annular housing 111 and two protrusions 112 symmetrically arranged on the outer periphery of the annular housing 111. Each protrusion 112 has a cavity 113. The annular housing 111 has a through hole 114 corresponding to the position of the protrusion 112, communicating with the cavity 113. Each of the two protrusions 112 has a set of push rod assemblies in its cavity 113, and the push rod 51 of the push rod assembly can extend into the annular housing 111 through the through hole 114. The structure is reasonable and compact, which facilitates the setting of the push rod assembly and allows the push rod 51 to be accurately inserted into the groove of the first wheel part 22.

[0069] like Figure 5 , Figure 9 and Figure 13 As shown, the rotating shaft 21 passes through the push rod bracket 11, and the first wheel portion 22 of the rotating shaft 21 is located inside the annular housing 111. The outer circumferential surface of the first wheel portion 22 is provided with two sets of grooves that respectively cooperate with the two sets of push rod assemblies. That is, the first wheel portion 22 is provided with two sets of first grooves 221 and second grooves 222, respectively. (See Figure 1) Figure 2 By positioning the rotating shaft 21 from both sides of the first wheel 22 in the radial direction using two sets of push rod assemblies, the stability of the positioning can be improved, keeping the rotating assembly 2 in the initial position or the first working position.

[0070] For example, such as Figure 2 and Figure 5As shown, the first groove 221 and the second groove 222, belonging to the same groove group, are arranged adjacent to each other, and the angle between the first groove 221 and the second groove 222 is a first preset angle. When the rotating component 2 is in the initial position, the push rod 51 of the push rod assembly is located in the first groove 221, so that the rotating component 2 can be kept in the initial position; when the rotating component 2 rotates along the first direction by the first preset angle under the action of the control component 3, the second groove 222 of the first wheel portion 22 of the rotating component 2 is exactly opposite to the push rod 51, and the push rod 51 extends into the second groove 222 under the action of the push rod spring 52 to position the rotating component 2, so that the rotating component 2 can be kept in the first working position.

[0071] Two sets of grooves are arranged at 180° on the outer circumferential surface of the first wheel portion 22, and are respectively matched with two sets of push rod assemblies. The outer circumferential surface of the first wheel portion 22 between the two sets of grooves is a smooth arc surface 223. When the rotating assembly 2 rotates to the second working position, the push rod 51 corresponds to the arc surface 223 of the first wheel portion 22 and does not position the first wheel portion 22. Instead, it assists the reset assembly 4 in rotating the rotating assembly 2 toward the initial position to reset it.

[0072] In some embodiments, the rotating assembly 2 further includes a second wheel portion 23 disposed on the rotating shaft 21, and the outer periphery of the second wheel portion 23 is partially provided with teeth. The reset assembly 4 includes a gear 41 and a torsion spring 42 acting on the gear 41, and the outer periphery of the gear 41 is partially provided with teeth. When the operating control assembly 3 drives the rotating assembly 2 to rotate from the initial position to the second working position in the second direction, the teeth of the second wheel portion 23 gradually mesh with the teeth of the gear 41, and the torsion spring 42 accumulates elastic potential energy until the rotating assembly 2 rotates to the second working position. The teeth of the second wheel portion 23 and the teeth of the gear 41 remain meshed. When the force acting on the operating assembly 3 is removed, the torsion spring 42 releases its elastic potential energy and drives the gear 41 to rotate in the second direction. The gear 41 drives the second tooth portion and the rotating shaft 21 to rotate in the first direction, and the rotating shaft 21 (rotating assembly 2) returns to the initial position and remains in that position. Thus, under the action of the reset component 4, the rotating component 2 can automatically reset from the second working position to the initial position without user operation, simplifying the operation steps and improving the user experience.

[0073] It is understandable that when the rotating component 2 is in the initial position, the teeth of the second wheel 23 can mesh with or disengage from the teeth of the gear 41, such as... Figure 7As shown in this embodiment, when the rotating assembly 2 is in the initial position, the teeth of the second wheel 23 and the gear 41 are in a state of just about to mesh. That is, if the second wheel 23 rotates in the second direction, it gradually enters a meshing state with the gear 41; if the second wheel 23 rotates in the first direction, it disengages from the gear 41, and the two no longer mesh. In other words, when the rotating assembly 2 rotates in the first direction from the initial position to the first working position and after it has reached the first position, the second wheel 23 and the gear 41 will not mesh. The reset assembly 4 is only used to reset the rotating assembly 2 when it is in the second working position, and will not reset the rotating assembly 2 when it is in the first working position, so that the rotating assembly 2 can be kept in the first working position, and the steam system 103 can maintain the required start-up time.

[0074] In some embodiments, such as Figure 2 As shown, the mounting bracket assembly 1 also includes a bracket base 12 and a bracket rear cover 13. The bracket base 12 and the bracket rear cover 13 are fastened to the rotating shaft 21 from both sides in the radial direction to restrict axial displacement of the rotating shaft 21. The first wheel portion 22 and the second wheel portion 23 are both exposed outside the bracket base 12 and the bracket rear cover 13. That is, the bracket base 12 and the bracket rear cover 13 are disposed on the rotating shaft 21 between the first wheel portion 22 and the second wheel portion 23.

[0075] like Figure 2 As shown, the mounting bracket assembly 1 also includes a gear fixing plate 15, which is fixed to the support base 12. The gear 41 is rotatably mounted on the gear fixing plate 15. One leg of the torsion spring 42 abuts against the gear 41, and the other leg of the torsion spring 42 abuts against the support base 12. The above structure facilitates the installation of the gear 41 and the torsion spring 42, and the structure is simple and reasonable.

[0076] Continue to combine Figure 2 The rotating shaft 21 is also provided with an arc-shaped or annular protrusion 26, that is, the protrusion 26 can be arranged in a full circle or in more than half a circle, half a circle, or less around the rotating shaft 21. The protrusion 26 is located between the first wheel portion 22 and the second wheel portion 23, and the outer peripheral surface of the protrusion 26 is partially recessed inward to form a first recess 261 and a second recess 262, see [reference]. Figure 6 , Figure 10 and Figure 14 A smooth portion is formed between the first recess 261 and the second recess 262.

[0077] The fixing bracket assembly 1 also includes a fixing block 14, which is fixed to the bracket base 12. The positioning assembly also includes a positioning pin 53 and a positioning pin spring 54. One end of the positioning pin spring 54 is connected to the fixing block 14, and the other end is connected to the positioning pin 53. The positioning pin spring 54 is used to apply a force to the positioning pin 53 to move it toward the protrusion 26, so that the positioning pin 53 can pass through the bracket base 12 and extend into the recess. Specifically, when the rotating assembly 2 (rotating shaft 21) is in the initial position, the first recess 261 on the protrusion 26 is opposite to the positioning pin 53. Under the action of the positioning pin spring 54, the positioning pin 53 passes through the bracket base 12 (the bracket base 12 has a pin hole 121 for the positioning pin 53 to pass through, see...). Figure 2 The positioning pin 53 extends into the first recess 261 to position the rotating assembly 2. When the rotating assembly 2 (rotating shaft 21) is in the first working position, the second recess 262 on the protrusion 26 is opposite to the positioning pin 53. Under the action of the positioning pin spring 54, the positioning pin 53 passes through the pin hole 121 on the bracket seat 12 and extends into the second recess 262 to position the rotating assembly 2. When the rotating assembly 2 is in the second working position, the positioning pin 53 is opposite to the smooth part between the two recesses and does not position the rotating assembly 2. Instead, when the reset assembly 4 resets the rotating assembly 2 to rotate, it assists the reset assembly 4 in resetting the rotating assembly 2 to the initial position.

[0078] In this embodiment, by providing a protruding ridge 26 with a recess on the rotating shaft 21, and a positioning pin 53 that can extend into the recess, the rotating component 2 can be positioned in the initial position and the first working position, respectively. The positioning pin 53 and the push rod 51 work together to position the rotating component 2, so that the rotating component 2 can be stably maintained in the initial position and the first working position.

[0079] To ensure balanced force distribution on the rotating assembly 2, the movement direction of the locating pin 53 is perpendicular to the movement direction of the push rod 51. That is, the locating pin 53 and the two push rods 51 position the rotating assembly 2 from three perpendicular directions (e.g., the X, Y, and Z directions in a three-dimensional coordinate system), resulting in better positioning.

[0080] It is understood that the angle between the first recess 261 and the second recess 262 is a first preset angle, so that when the rotating component 2 rotates from the initial position along the first direction by the first preset angle, the positioning pin 53 is exactly opposite to the second recess 262 and extends into the second recess 262 to position the rotating component 2.

[0081] In some embodiments, such as Figure 7 , Figure 11 and Figure 15As shown, a trigger part 24 is also provided on the outer periphery of the rotating shaft 21, and a micro switch 102 for controlling the opening and closing of the steam system 103 of the coffee machine is provided on the bracket 12. When the rotating assembly 2 is in the first working position and the second working position respectively, the trigger part 24 on the rotating shaft 21 can trigger the micro switch 102 (see Figure 11 and Figure 15 When the steam system 103 is started and the rotating component 2 is in the initial position, the trigger 24 disengages from the micro switch 102, releasing the trigger on the micro switch 102 (see [link]). Figure 7 Steam system 103 is shut down.

[0082] For example, continue to combine Figure 7 , Figure 11 and Figure 15 The trigger part 24 includes two parts, namely a first trigger part and a second trigger part. The first trigger part and the second trigger part are structures that protrude from the outer periphery of the rotating shaft 21, and a recess is formed between the two trigger parts. When the rotating assembly 2 is in the middle position, the recess between the two trigger parts is opposite to the micro switch 102, the trigger part 24 is disengaged from the micro switch 102, and the micro switch 102 cannot be triggered. The steam system 103 is in the closed state and cannot generate steam. When the rotating assembly 2 rotates to the first working position, the first trigger part is opposite to the micro switch 102 and triggers the micro switch 102. The steam system 103 starts and generates steam to provide steam for milk frothing in the coffee machine. When the rotating assembly 2 rotates to the second working position, the second trigger part is opposite to the micro switch 102 and triggers the micro switch 102. The steam system 103 starts and generates steam. Since the rotating assembly 2 can automatically reset when it rotates to the second working position, the micro switch 102 is only triggered for a short time in the second working position. Therefore, the amount of steam generated is small and can be used to preheat the steam pipe of the steam system 103 or to purge water remaining in the steam pipe. The rotating component 2 in this embodiment can not only switch between three positions, but also trigger and de-trigger the micro switch 102 at different positions. By integrating multiple functions into one component, it not only simplifies the structure, but also improves the ease of use of the product.

[0083] In some embodiments, such as Figure 1 and Figure 2 As shown, the control assembly 3 includes a turntable 31, a handle 33 disposed on the outer circumferential surface of the turntable 31, and a connecting portion 32 disposed on one side of the turntable 31. The connecting portion 32 has a non-circular connecting cavity 321, and the cavity wall of the connecting cavity 321 has a positioning groove. Figure 2As shown, one end of the rotating shaft 21 is provided with a connector 25 that matches the shape of the connecting cavity 321. A rib 251 is provided on the outer circumferential surface of the connector 25. The connector 25 is inserted into the connecting cavity 321, and the rib 251 is confined within the positioning groove. The control component 3 has a reasonable structure; when the turntable 31 is rotated by the operating handle 33, the rotating shaft 21 can be rotated simultaneously, enabling the switching of the rotating shaft 21 between different gear positions. The turntable 31 and the handle 33 can be exposed outside the coffee machine body 100, see [reference]. Figure 16 To facilitate user operation.

[0084] Continue to combine Figure 2 The annular housing 111 of the push rod support 11 extends inward at one end to form an annular baffle (not shown in the figure). The push rod support 11 also includes a connecting sleeve 115, one end of which is connected to the inner periphery of the annular baffle. Multiple fasteners 116 are provided on the inner peripheral wall of the connecting sleeve 115. See [reference needed]. Figure 3 Multiple spring arms 34 are provided around the connecting part 32 on the turntable 31, and the free ends of the spring arms 34 are provided with limiting hooks 341. The multiple spring arms 34 extend into the connecting sleeve 115, and the limiting hooks 341 of the multiple spring arms 34 are respectively engaged with the multiple fasteners 116. Through the cooperation of the limiting hooks 341 and the fasteners 116, the turntable 31 is positioned on the top rod bracket 11, and the turntable 31 can rotate relative to the top rod bracket 11.

[0085] It is understandable that the first preset angle and the second preset angle can be the same or different, and the specific angle value can be selected and determined as needed. For example, the first preset angle and the second preset angle can be the same, both being 45° or 60°, etc. The first direction can be clockwise, then the second direction is counterclockwise; the first direction can also be counterclockwise, then the second direction is clockwise.

[0086] To facilitate the use of materials, when the rotating component 2 is in the initial position, the handle can be set to a vertical position. Rotating 45° clockwise in the first direction is the first working position, and rotating 45° counterclockwise in the second direction is the second working position.

[0087] like Figures 4 to 7 As shown, the rotating assembly 2 is in the initial position, the handle 33 is in a vertical position, and the two push rods 51 are respectively abutting against the two first grooves 221 (see...). Figure 5 The locating pin 53 rests against the first recess 261 (see...). Figure 6 The two push rods 51 and the locating pin 53 together position the rotating assembly 2 in the initial gear position. The gear 41 of the reset assembly 4 is either just engaged or disengaged from the second wheel 23 (see...). Figure 7When the torsion spring 42 is in its natural state, the trigger part 24 is disengaged from the micro switch 102, and the micro switch 102 is not triggered (see...). Figure 7 ).like Figures 8 to 11 As shown, when the handle 33 is rotated 45° clockwise from the initial position, the handle 33 drives the rotating assembly 2 to rotate to the first working position via the turntable 31. The two push rods 51 disengage from the two first grooves 221 and enter the two second grooves 222 respectively (see...). Figure 9 The locating pin 53 then enters the second recess 262 (see...). Figure 10 The two push rods 51 and the locating pin 53 together position the rotating assembly 2 in the first working position. The gear 41 and the second wheel 23 of the reset assembly 4 disengage, and the two are no longer meshed (see...). Figure 11 When the torsion spring 42 is in its natural state, the first triggering part triggers the micro switch 102 (see...). Figure 11 Steam system 103 starts to generate steam. For example... Figures 12 to 15 As shown, when the handle 33 is rotated 45° counterclockwise from the initial position, the handle 33 drives the rotating assembly 2 to rotate to the second working position via the turntable 31. The two push rods 51 disengage from the two first grooves 221 and respectively abut against the arc surface 223 of the first wheel portion 22 between the two sets of grooves (see...). Figure 13 The locating pin 53 also disengages from the first recess 261 and abuts against the smooth portion of the protrusion 26 between the first recess 261 and the second recess 262 (see...). Figure 14 The gear 41 of the reset assembly 4 meshes with the second wheel 23 (see...). Figure 15 The torsion spring 42 stores elastic potential energy so that it can drive the gear 41 to drive the rotating assembly 2 to rotate in the first direction and return to the initial position. The second trigger triggers the micro switch 102 (see...). Figure 15 Steam system 103 is started to generate steam.

[0088] This application also provides a coffee machine, such as Figure 16 As shown, the coffee machine includes a body 100 and a steam system 103 disposed on the body 100. The coffee machine also includes a selector switch 101 in any of the above embodiments for controlling the opening and closing of the steam system 103.

[0089] Continue to combine Figure 16 The coffee machine also includes a water tank assembly 104, a control panel assembly 105, a brewing system 106, a hot water system 107, a high-pressure funnel 108, and a drip tray assembly 109, etc. The above structures are all common components of coffee machines in the prior art, and this application will not describe them in detail.

[0090] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A selector switch for use on a coffee machine to control the opening and closing of the steam system of the coffee machine, characterized in that, The changeover switch includes: The mounting bracket assembly (1) is fixed to the body (100) of the coffee machine; Rotating component (2) is rotatably mounted on the fixed frame component (1) and has an initial position, a first working position that rotates by a first preset angle along a first direction from the initial position, and a second working position that rotates by a second preset angle along a second direction from the initial position, wherein the first direction is opposite to the second direction; The control component (3) is connected to the rotating component (2) and is used to drive the rotating component (2) to rotate so that the rotating component (2) can switch from the initial gear position to the first working gear position or the second working gear position, and switch from the first working gear position to the initial gear position. A reset component (4) is provided on the fixed frame component (1) for automatically switching the rotating component (2) which is in the second working position to the initial position. A positioning component is provided on the fixed frame assembly (1) for positioning the rotating component (2) in the first working position so that the rotating component (2) is kept in the first working position; The rotating assembly (2) includes a rotating shaft (21) and a first wheel portion (22) and a second wheel portion (23) disposed on the rotating shaft (21). The outer peripheral surface of the first wheel portion (22) is provided with a groove group, the groove group including a first groove (221) and a second groove (222). The outer peripheral surface of the second wheel portion (23) is partially provided with gear teeth. The positioning assembly includes a push rod assembly, which includes a push rod (51) and a push rod spring (52). The push rod spring (52) applies a force to the push rod (51) to move it toward the first wheel (22). When the rotating assembly (2) is in the initial position, the first groove (221) on the first wheel (22) is opposite to the push rod (51), and the push rod (51) extends into the first groove (221) under the force applied by the push rod spring (52). When the rotating assembly (2) is in the first working position, the second groove (222) on the first wheel (22) is opposite to the push rod (51), and the push rod (51) extends into the second groove (222) under the force applied by the push rod spring (52) so that the rotating assembly (2) is held in the first working position. The reset assembly (4) includes a gear (41) and a torsion spring (42) acting on the gear (41), the outer periphery of the gear (41) having teeth; During the process of driving the rotating component (2) to rotate from the initial gear position to the second working gear position in the second direction by the control component (3), the teeth of the second wheel (23) mesh with the teeth of the gear (41) and cause the torsion spring (42) to accumulate elastic potential energy. When the force acting on the control component (3) is removed, the torsion spring (42) releases the elastic potential energy and drives the gear (41) to rotate in the second direction. The gear (41) drives the rotating component (2) to rotate in the first direction by meshing with the second wheel (23) so as to reset from the second working gear position to the initial gear position.

2. The changeover switch according to claim 1, characterized in that, The mounting bracket assembly (1) includes a top rod bracket (11) fixed inside the body (100) of the coffee machine. The top rod bracket (11) includes an annular housing (111) and two protrusions (112) symmetrically arranged on the outer periphery of the annular housing (111). The protrusions (112) are provided with cavities (113). The annular housing (111) is provided with through holes (114) corresponding to the positions of the protrusions (112) and communicating with the cavities (113). A set of top rod assemblies is provided in the cavities (113) of the two protrusions (112), and the top rod (51) of the top rod assembly can extend into the annular housing (111) through the through holes (114). The rotating shaft (21) passes through the top rod bracket (11), and the first wheel part (22) of the rotating shaft (21) is located inside the annular housing (111). The outer circumferential surface of the first wheel part (22) is provided with two sets of grooves that cooperate with the two sets of top rod assemblies respectively.

3. The changeover switch according to claim 1, characterized in that, The fixing frame assembly (1) further includes a bracket base (12) and a bracket back cover (13). The bracket base (12) and the bracket back cover (13) are fastened to the rotating shaft (21) from both sides in the radial direction to restrict the axial displacement of the rotating shaft (21). The first wheel portion (22) and the second wheel portion (23) are both exposed outside the bracket base (12) and the bracket back cover (13).

4. The changeover switch according to claim 3, characterized in that, The rotating shaft (21) is also provided with an arc-shaped or annular protrusion (26). The protrusion (26) is located between the first wheel portion (22) and the second wheel portion (23), and the outer peripheral surface of the protrusion (26) is partially recessed inward to form a first recess (261) and a second recess (262). The fixing frame assembly (1) further includes a fixing block (14), which is fixed to the bracket base (12); The positioning assembly further includes a positioning pin (53) and a positioning pin spring (54). One end of the positioning pin spring (54) is connected to the fixing block (14), and the other end is connected to the positioning pin (53). The positioning pin spring (54) is used to apply a force to the positioning pin (53) to make it move toward the protrusion (26), so that when the rotating assembly (2) is in the initial position, the positioning pin (53) can pass through the bracket seat (12) and extend into the first recess (261). When the rotating assembly (2) is in the first working position, the positioning pin (53) can pass through the bracket seat (12) and extend into the second recess (262).

5. The changeover switch according to claim 4, characterized in that, The direction of movement of the positioning pin (53) is perpendicular to the direction of movement of the top rod (51).

6. The changeover switch according to claim 3, characterized in that, The outer periphery of the rotating shaft (21) is also provided with a trigger part (24), and the bracket base (12) is provided with a micro switch (102) for controlling the opening and closing of the steam system of the coffee machine. When the rotating component (2) is in the first working position and the second working position respectively, the trigger part (24) on the rotating shaft (21) can trigger the micro switch (102) to start the steam system. When the rotating component (2) is in the initial position, the trigger part (24) disengages from the micro switch (102) to release the triggering of the micro switch (102) and the steam system is turned off.

7. The changeover switch according to claim 2, characterized in that, The control component (3) includes a turntable (31), a handle (33) disposed on the outer peripheral surface of the turntable (31), and a connecting part (32) disposed on one side of the turntable (31). The connecting part (32) is provided with a non-circular connecting cavity (321), and the cavity wall of the connecting cavity (321) is provided with a positioning groove. One end of the rotating shaft (21) is provided with a connector (25) that is adapted to the shape of the connecting cavity (321). The outer peripheral surface of the connector (25) is provided with a rib (251). The connector (25) is inserted into the connecting cavity (321), and the rib (251) is limited to the positioning groove. When the turntable (31) is rotated by the handle (33), the rotating shaft (21) is driven to rotate accordingly.

8. The changeover switch according to claim 7, characterized in that, One end of the annular housing (111) of the top rod bracket (11) extends inward to form an annular baffle; The top rod support (11) also includes a connecting sleeve (115), one end of which is connected to the inner periphery of the annular baffle, and the inner periphery of the connecting sleeve (115) is provided with a plurality of fasteners (116). The turntable (31) is provided with multiple spring arms (34) around the connecting part (32), and the free end of the spring arm (34) is provided with a limiting hook (341). Multiple spring arms (34) extend into the connecting sleeve (115), and the limiting hooks (341) of multiple spring arms (34) are respectively fastened into multiple fasteners (116).

9. A coffee machine, comprising a body (100) and a steam system disposed on said body (100), characterized in that, The coffee machine also includes a selector switch as described in any one of claims 1 to 8 for controlling the opening and closing of the steam system.

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