Switch structure of egg beater and egg beater

Abstract

The application discloses a switch structure of a whisk, which comprises a knob, a conductive elastic sheet, a supporting block, a first electrode sheet and a plurality of second electrode sheets. The supporting block is provided with a supporting protrusion between the electrode sheets. The conductive elastic sheet rotates with the knob, the first protrusion in the middle part of the conductive elastic sheet selectively abuts against the first electrode sheet or the supporting protrusion, and the second protrusion in the lower part of the conductive elastic sheet is connected with or separated from different second electrode sheets, so as to realize gear shifting and circuit on-off. The structure simplifies the internal layout by means of the integrated conductive elastic sheet, forcibly breaks the circuit during gear shifting by means of the supporting protrusion, effectively prevents accidental starting, and enhances the connection reliability and anti-vibration capacity by means of the elastic contact and mechanical limiting design, prevents automatic gear shifting and accidental withdrawal during work, and improves the safety and durability.

Description

Technical Field

[0001] This application relates to the field of egg beater technology, specifically to a switch structure for an egg beater and an egg beater. Background Technology

[0002] As a common kitchen appliance, the switch mechanism of an egg beater is the core component for achieving multi-speed control. Currently, most electric egg beaters on the market use multiple sets of independent contacts, sliding rheostats, or complex multi-channel switching structures for their speed control switches. These traditional solutions typically require multiple independent conductive plates, complex internal wiring, and precision mechanical linkage components, resulting in a complex internal structure for the overall switch. This not only increases production costs and assembly difficulty but also affects product reliability. Furthermore, after frequent use, complex switches are prone to problems such as poor contact, unclear speed settings, or switching sluggishness. Utility Model Content

[0003] To address the problem of stuck speed control in existing egg beater switch structures, this application provides an egg beater switch structure and an egg beater itself. The specific technical solution of this application is as follows:

[0004] A switch structure for an egg beater, comprising: a knob, a conductive spring, a support block, a first electrode, and several second electrodes. The support block is disposed in the egg beater. The first electrode is disposed in the middle of the support block, and the second electrodes are arranged at the lower end of the support block. Several support protrusions are provided on the support block. The support protrusions are located between the first and second electrodes and are offset from the second electrodes. The knob is rotatably disposed at the upper end of the support block. The upper end of the conductive spring is fixedly connected to the knob. The middle part of the conductive spring is provided with a first protrusion that cooperates with the first electrode and the support protrusions, and the lower end is provided with a second protrusion that cooperates with the second electrodes.

[0005] Furthermore, the knob is provided with a groove, and a locking shaft is provided in the groove, and the conductive spring is fixed in the groove by the locking shaft.

[0006] Furthermore, slots are provided on both sides of the groove, and locking blocks that match the slots are provided on both sides of the conductive spring sheet.

[0007] Furthermore, the conductive spring includes a first spring and a second spring, the first spring is disposed in the second spring and there is a gap between the first spring and the second spring, the first protrusion is located on the first spring and the second protrusion is located on the second spring.

[0008] Furthermore, the first protrusion and the second protrusion are formed by the conductive spring sheet being recessed towards the support block.

[0009] Furthermore, the conductive spring is made of copper alloy.

[0010] Furthermore, a lever is provided on the top of the knob, and a through hole is provided on the top of the body, with the lever extending from the through hole to the outside of the body.

[0011] Furthermore, the contact surface of the first electrode sheet is fan-shaped, and the second electrode sheets are evenly distributed around the axis of the locking shaft.

[0012] An egg beater, the egg beater including the switch structure of the egg beater described above.

[0013] This utility model, through its innovative integrated contact and mechanical interlock design, effectively simplifies the switch structure and improves safety and reliability. Specific technical effects are as follows:

[0014] Highly integrated structure, significantly simplifying internal layout: The core of this invention lies in the use of an integrated elastic conductive spring as the core conductive and actuating component. This spring, through its first and second protrusions, selectively contacts a fixed first electrode and multiple surrounding second electrodes, thereby completing the circuit connection for different positions. This integrated "one moving contact to multiple fixed contacts" design replaces the complex combination of multiple independent moving contacts in traditional methods, greatly simplifying the mechanical structure and electrical connections of the switch, making the internal layout clearer and more concise.

[0015] Unique power-off design completely prevents accidental switching: A support protrusion is set on the support block between the first and second electrode plates. When the user rotates the knob to switch gears, positioning the conductive spring between the two gears, the first protrusion abuts against the insulated support protrusion, forcibly lifting the second protrusion and separating it from all the second electrode plates, thus physically disconnecting the circuit. This design ensures that the motor circuit is always de-energized at the moment of gear switching, fundamentally eliminating the problems of accidental motor start-up, arcing, or accidental acceleration due to gear switching.

[0016] Stable mechanical interlock enhances safety and durability: The flexible conductive springs ensure tight contact between the contacts, resulting in low and stable contact resistance. The support protrusions also act as a limit stop after the stop is in place, significantly improving the product's safety and overall structural durability during high-speed operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the egg beater in one embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the internal structure of the egg beater in one embodiment of this application;

[0019] Figure 3 This is a schematic cross-section of the egg beater in one embodiment of this application. Figure 1 ;

[0020] Figure 4 This is a schematic cross-section of the egg beater in one embodiment of this application. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the switch structure in one embodiment of this application;

[0022] Figure 6 This is an exploded view of the switch structure in one embodiment of this application. Figure 1 ;

[0023] Figure 7 This is an exploded view of the switch structure in one embodiment of this application. Figure 2 ;

[0024] Figure 8 This is a side view of the switch structure in one embodiment of this application. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments 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.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0027] 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 technical features. Thus, the use of "first" or "second" to define a feature may explicitly or implicitly include one or more of that feature, and in the description of this application, "at least" means one or more, unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In the application, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "below" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0030] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of this application, making the technical solution and its beneficial effects clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, but should not be construed as limiting it.

[0031] like Figure 1 and Figure 6As shown, this utility model provides an electric egg beater, including: a body 1, and a switch structure 2 for switching working levels, an acceleration component for accelerating the egg beater, and a retraction component for retracting the mixing rod, all mounted on the body 1. The switch structure 2 includes a knob 5, a conductive spring 6, a support block 7, a first electrode 8, and several second electrode 9s. The support block 7 is vertically mounted in the body 1, supporting the switch structure 2. The first electrode 8 is located in the middle of the support block 7, and the second electrode 9s are arranged at the lower end of the support block 7. The conductive spring 6 is connected to different second electrode 9s through the first electrode 8, realizing the switching of the egg beater's working levels. Several support protrusions 10 are provided on the support block 7, located between the first electrode 8 and the second electrode 9s and offset from them. The knob 5 is rotatably mounted on the upper end of the support block 7. The upper end of the conductive spring 6 is fixedly connected to the knob 5. The conductive spring 6 has a first protrusion 11 in the middle and a second protrusion 12 at the lower end. When the first protrusion 11 abuts against the first electrode plate 8, the second protrusion 12 abuts against the second electrode plate 9. When the first protrusion 11 abuts against the support protrusion 10, the second protrusion 12 separates from the second electrode plate 9. The conductive spring 6 is made of a conductive metal, preferably a copper alloy. Rotating the knob 5 will cause the conductive spring 6 to rotate, thus switching gears. When the first protrusion 11 is located between the two support protrusions 10, the first protrusion 11 and the second protrusion 12 abut against the first electrode plate 8 and the second electrode plate 9 respectively, making the first electrode plate 8 and the second electrode plate 9 conductive, and the whisk starts working. When the whisk switches gears, the first protrusion 11 needs to pass over the support protrusion 10 on one side. When the first protrusion 11 abuts against the support protrusion 10, the support protrusion 10 supports the conductive spring 6, so that the second protrusion 12 of the conductive spring 6 is not only located between the two second electrode plates 9, but also separated from the second electrode plates 9, making the electrical separation between the first electrode plate 8 and the second electrode plate 9 more complete. When the whisk has not completed the gear switch, the acceleration component 3 will not be triggered, which will not affect the use of the whisk and improve the user experience. The first electrode plate 8 is set to the right side of the support block 7. There are two more support protrusions 10 than second electrode plates 9, that is, there is one more locking position between the support protrusions 10 than between the second electrode plates 9. The extra one is for gear 0. Therefore, when the first protrusion 11 is located between the two leftmost support protrusions 10 of the support block 7, that is, when the knob is in the 0 position, the first protrusion 11 and the second protrusion 12 will only abut against the support block 7. At this time, the first electrode plate 8 and the second electrode plate 9 are electrically separated, the acceleration component will not be triggered, and pressing the acceleration button will not have any effect.

[0032] In one embodiment, a semi-circular groove 13 is provided on the side wall or end face of the knob 5. This groove 13 is used to accommodate and fix the conductive spring 6. A locking shaft 14 is provided inside the groove 13. The locking shaft 14 is typically a metal cylindrical pin that passes through the knob 5 and is fixed to the knob 5 by threads. The conductive spring 6 is correspondingly designed with a shaft hole or opening. By fitting the conductive spring 6 onto the locking shaft 14, it can be securely positioned and held within the groove 13. A slot 3 is provided at the bottom of the knob 5. The upper end of the support block 7 is an insertion part 4. The insertion part 4 of the support block 7 is inserted into the slot 3 from top to bottom. Then, the locking shaft 14 passes through the slot 3 and the insertion part 4 from the groove 13, fixing the support block 7 and the knob 5 together.

[0033] In one embodiment, to further enhance the reliability of the fixation and prevent the conductive spring 6 from shifting or loosening when the knob 5 is rotated, slots 15 are symmetrically provided on both sides of the inner wall of the groove 13. Correspondingly, at the two side edges of the conductive spring 6 body, locking blocks 16 that match the shape and size of the slots 15 are integrally formed or additionally provided. During assembly, by aligning the locking blocks 16 on both sides of the conductive spring 6 and pressing them into the slots 15 on both sides of the groove 13, the conductive spring 6 can be quickly pre-positioned and mechanically locked. Together with the locking shaft 14, it forms a double fixing structure, ensuring the stability and contact reliability of the component during long-term use.

[0034] In one embodiment, the conductive spring 6 includes a first spring 17 and a second spring 18. The first spring 17 is disposed within the second spring 18, and a U-shaped gap 19 is provided between the first spring 17 and the second spring 18. The first protrusion 11 is located on the first spring 17, and the second protrusion 12 is located on the second spring 18. With the double-spring design, the first protrusion 11 and the second protrusion 12 are subjected to separate elastic forces, preventing them from affecting each other and making the connection between the first protrusion 11 and the second protrusion 12 and the first electrode plate 8 and the second electrode plate 9 more stable.

[0035] In one embodiment, the first protrusion 11 and the second protrusion 12 are formed by the conductive spring sheet 6 being recessed towards the support block 7, and are integrally molded, which not only reduces the mass of the conductive spring sheet 6, but also facilitates the production of the conductive spring sheet 6.

[0036] In one embodiment, the knob 5 is provided with a lever 20 on its top, and the body 1 is provided with a through hole 21 on its top. The lever 20 extends from the through hole to the outside of the body 1, making it convenient for the user to switch gears using the lever 20.

[0037] In one embodiment, the contact surface of the first electrode sheet 8 is fan-shaped, and the second electrode sheets 9 are evenly distributed around the axis of the locking shaft 14, forming a surrounding arrangement of the first electrode sheet 8.

[0038] An egg beater, the egg beater including the switch structure of the egg beater described above.

[0039] This utility model, through its innovative integrated contact and mechanical interlock design, effectively simplifies the switch structure and improves safety and reliability. Specific technical effects are as follows:

[0040] Highly integrated structure, significantly simplifying internal layout: The core of this invention lies in the use of an integrated elastic conductive spring as the core conductive and actuating component. This spring, through its first and second protrusions, selectively contacts a fixed first electrode and multiple surrounding second electrodes, thereby completing the circuit connection for different positions. This integrated "one moving contact to multiple fixed contacts" design replaces the complex combination of multiple independent moving contacts in traditional methods, greatly simplifying the mechanical structure and electrical connections of the switch, making the internal layout clearer and more concise.

[0041] Unique power-off design completely prevents accidental switching: A support protrusion is set on the support block between the first and second electrode plates. When the user rotates the knob to switch gears, positioning the conductive spring between the two gears, the first protrusion abuts against the insulated support protrusion, forcibly lifting the second protrusion and separating it from all the second electrode plates, thus physically disconnecting the circuit. This design ensures that the motor circuit is always de-energized at the moment of gear switching, fundamentally eliminating the problems of accidental motor start-up, arcing, or accidental acceleration due to gear switching.

[0042] Stable mechanical interlock enhances safety and durability: The flexible conductive springs ensure tight contact between the contacts, resulting in low and stable contact resistance. The support protrusions also act as a limit stop after the stop is in place, significantly improving the product's safety and overall structural durability during high-speed operation.

[0043] In the description of this specification, the terms "in one embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The connection methods linked in the description of this specification have significant effects and practical utility.

[0044] Based on the above description of the structure and principles, those skilled in the art should understand that this application is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this application all fall within the protection scope of this application and should be defined by the claims.

Claims

1. A switch structure for an egg beater, used in an egg beater, characterized in that, include: The device comprises a knob, a conductive spring, a support block, a first electrode plate, and several second electrode plates. The support block is disposed in the egg beater. The first electrode plate is disposed in the middle of the support block, and the second electrode plates are arranged at the lower end of the support block. Several support protrusions are provided on the support block. The support protrusions are located between the first electrode plates and the second electrode plates and are offset from the second electrode plates. The knob is rotatably disposed at the upper end of the support block. The upper end of the conductive spring is fixedly connected to the knob. The middle part of the conductive spring is provided with a first protrusion that cooperates with the first electrode plate and the support protrusions, and the lower end is provided with a second protrusion that cooperates with the second electrode plates.

2. The switch structure of the egg beater according to claim 1, characterized in that, The knob has a groove, and a locking shaft is provided in the groove. The conductive spring is fixed in the groove by the locking shaft.

3. The switch structure of the egg beater according to claim 2, characterized in that, The groove has slots on both sides, and the conductive spring has blocks on both sides that match the slots.

4. The switch structure of the egg beater according to claim 3, characterized in that, The conductive spring includes a first spring and a second spring. The first spring is disposed in the second spring and there is a gap between the first spring and the second spring. The first protrusion is located on the first spring and the second protrusion is located on the second spring.

5. The switch structure of the egg beater according to claim 4, characterized in that, The first and second protrusions are formed by the conductive spring sheet being recessed towards the support block.

6. The switch structure of the egg beater according to claim 5, characterized in that, The conductive spring is made of copper alloy.

7. The switch structure of the egg beater according to claim 2, characterized in that, A toggle is provided on the top of the knob.

8. The switch structure of the egg beater according to claim 2, characterized in that, The contact surface of the first electrode sheet is fan-shaped, and the second electrode sheets are evenly distributed around the axis of the locking shaft.

9. An egg beater, characterized in that, The egg beater includes the switch structure of the egg beater according to any one of claims 1 to 8.

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