Multi-gear type gear switch structure of food processor

Abstract

This invention discloses a multi-speed switch structure for a food processor, including a main unit and a detachable mixing component. The main unit has a plug-in channel and a drive device. The control area has a release button, a speed-jump button, and a speed-sliding button. The release button can slide to release the mixing component. The speed-sliding button has a zero speed, a middle speed, and a maximum speed along its sliding path. The switch base inside the main unit has a first metal plate, a second metal plate corresponding to the middle speed, and a third metal plate corresponding to the maximum speed. The first conductive element on the speed-sliding button has a first contact portion that is always connected to the first metal plate, and a second contact portion that is connected to the corresponding second metal plate at the middle speed and to the third metal plate at the maximum speed. The speed-jump button slides and has an elastic element between it and the switch base. When its second conductive element is pressed, it is simultaneously connected to the first and third metal plates. An anti-speed-jump structure is provided between the speed-sliding button and the speed-jump button to prevent speed-jumping at the zero speed, and an anti-disengagement structure is provided between the speed-sliding button and the release button to prevent disengagement at the middle or maximum speed. This provides a safe, reliable, and easy-to-use switch structure.

Description

Technical Field

[0001] This invention relates to the field of small household appliance technology, and in particular to a multi-speed switch structure for a food processor. Background Technology

[0002] Currently, household food processors (such as egg beaters, blenders, and high-speed blenders) are typically equipped with multi-speed settings to meet the speed and power requirements of different ingredients and processes. Existing speed control methods are mostly rotary or push-button mechanical switches, achieving speed adjustment by changing the motor windings or the conduction angle of the thyristor.

[0003] However, this type of structure has the following shortcomings in practical use: First, the gear switching and function buttons (such as retracting the stick, jogging acceleration, etc.) are often scattered, requiring users to look down or operate with both hands, making efficient blind operation impossible, especially when adjusting the gear or retracting the stick during continuous whipping, which can easily lead to accidental activation; Second, the safety interlock mechanism is imperfect. Some products allow the high-power gear button to be pressed even when the motor is not running (zero gear), causing a sudden surge of high current into the motor; or the mixing component can still be disassembled while the motor is running, posing a safety hazard of the mixing component flying out or causing injury. In addition, the conductive contacts in the existing switch structure are prone to wear or poor contact after long-term use, resulting in blurred gear feel and affecting the operating feel and reliability. Therefore, it is necessary to develop a multi-gear switch structure with centralized operation, reliable safety interlock, convenient disassembly and assembly, and good whipping effect. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a multi-speed switch structure for a food processor that offers reliable safety interlocking and is more convenient and user-friendly.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows:

[0006] A multi-speed switch structure for a food processor is provided, including a main unit with a detachable mixing component. The main unit has a insertion channel for inserting the mixing component and a drive device for rotating the mixing component when it is inserted into the insertion channel. A control area is provided on the side wall of the main unit, containing a disengagement button, a speed skipping button, and a speed sliding button. The disengagement button is slidably connected to the main unit in a first direction and, when slid, pushes the mixing component out of the insertion channel. The speed sliding button is slidably connected to the main unit in a second direction. The control area has multiple speeds along the sliding path of the speed sliding button, including at least a zero speed, several intermediate speeds, and a maximum speed. A switch base corresponding to the control area is provided inside the main unit. The switch base has a first metal plate, a second metal plate corresponding to each intermediate speed, and a second metal plate corresponding to the maximum speed. The third metal plate is provided. The slide key is provided with a first conductive element. The first conductive element has a first contact portion that always abuts against the first metal plate during the sliding of the slide key. The first conductive element has a second contact portion that abuts against the corresponding second metal plate when it slides to the middle position and against the third metal plate when it slides to the highest position. The jump button is slidably connected to the host along a first direction. A first elastic element is provided between the jump button and the switch base so that the jump button can be pressed. The jump button is connected to a second conductive element, and when the jump button is pressed, the second conductive element abuts against both the first and third metal plates. An anti-jump structure is provided between the slide key and the jump button to prevent the jump button from sliding when the slide key is in the zero position. An anti-disengagement structure is provided between the slide key and the release button to prevent the release button from sliding when the slide key is in the middle or highest position.

[0007] As described above, the multi-speed switch structure of the food processor includes an anti-skip structure comprising a pressure post on the skip button, a stepped portion on the pressure post, a groove on the slide button for the pressure post to pass through, and a notch on the side wall of the groove. The width of the stepped portion is greater than the width of the notch and less than the width of the groove, and the pressure post enters the notch when the slide button is in the zero position.

[0008] As described above, the multi-speed switch structure of the food processor includes a rotating sleeve on the main unit that can rotate relative to it. The insertion channel is opened on the rotating sleeve, and the rotating sleeve is provided with a turbine part. The upper part of the output shaft of the drive device is connected to a worm gear, which together with the turbine part forms a worm gear mechanism. The ejection button is connected to a sliding member that can slide relative to the main unit. The sliding member is provided with a push rod that extends into the insertion channel and can push the mixing member out during its sliding. The anti-ejection structure includes a baffle provided on the sliding button. When the sliding button is in the middle or highest speed position, the baffle is located on the side of the ejection button and prevents the ejection button from being pressed.

[0009] As described above, in the multi-speed switch structure of the food processor, the slide has a guide slope on the end wall near the recess to push the stepped part away from the slide.

[0010] As described above, in the multi-speed switch structure of the food processor, the release button is provided with a clearance groove for the sliding key to be inserted.

[0011] As described above, in the multi-speed switch structure of the food processor, a damping structure is provided between the sliding key and the switch base to push the sliding key to the corresponding speed.

[0012] As described above, the multi-speed switch structure of the food processor includes a limiting groove formed on the switch base and corresponding to each speed setting, a limiting member that can slide relative to the sliding button, and a second elastic member located between the limiting member and the sliding button and pushing the limiting member into the limiting groove.

[0013] As described above, in the multi-speed switch structure of the food processor, a third elastic element is provided between the sliding key and the switch base to push the first conductive element toward the switch base.

[0014] In the multi-speed switch structure of the food processor described above, a third elastic element is arranged on the sliding key at least at the corresponding positions of the first contact portion and the second contact portion.

[0015] As described above, in the multi-speed switch structure of the food processor, the first conductive element is U-shaped, the first contact portion and the second contact portion are located on both sides of the first conductive element, the limiting element is arranged between the first contact portion and the second contact portion, and the limiting groove is arranged between the first metal plate and the third metal plate.

[0016] The beneficial effects of this invention are as follows: It adopts a dual physical interlocking structure (anti-gear skipping structure A and anti-disengagement structure B), which blocks the gear skipping button when in the zero position and blocks the disengagement button when in the working position. Mechanically, it restricts gear skipping to the working position and disengagement to the non-working position. Gears that can skip gears cannot be disengaged, and gears that can disengage gears cannot skip gears, thus eliminating the danger of accidentally triggering high power or accidentally disengaging the gear, greatly improving safety, and allowing users to operate it freely and conveniently. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the food processor of the present invention;

[0018] Figure 2 This is a cross-sectional schematic diagram of the food processor of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the food processor of the present invention;

[0020] Figure 4 This is an exploded view of the food processor of the present invention. Figure 1 ;

[0021] Figure 5 This is an exploded view of the food processor of the present invention. Figure 2 ;

[0022] Figure 6 This is an exploded view of the food processor of the present invention. Figure 3 ;

[0023] Figure 7 This is an exploded view of the food processor of the present invention. Figure 4 ;

[0024] Figure 8 This is an exploded view of the food processor of the present invention. Figure 5 ;

[0025] Figure 9 This is an exploded view of the food processor of the present invention. Figure 6 ;

[0026] Figure 10 This is a circuit diagram of the multi-speed switch structure of the food processor of the present invention. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0028] It should be noted that all directional indications in this invention are only used to explain the relative positional relationships and movement of components in a specific orientation. If the specific orientation changes, the directional indications will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0029] like Figures 1 to 9 As shown, this embodiment discloses a multi-speed switch structure for a food processor, including a main unit 1, on which a mixing element 2 is detachably connected. The main unit 1 generally has a power supply structure, such as a line connected to the power grid or a built-in battery, and a control module that includes a motor, controls the motor's start / stop, and sets the power, which is conventional technology and will not be described in detail. In this embodiment, the mixing element 2 is a whisk, but it can also be a general mixing blade. The main unit 1 has a insertion channel 101 for inserting the mixing element 2, and a drive device 102 that drives the mixing element 2 to rotate after it is inserted into the insertion channel 101. The drive device 102 is generally a motor with an output shaft.

[0030] The main unit 1 has a control area 103 on its side wall. The control area 103 includes a release button 11, a speed-jump button 12, and a speed-slide button 13. To facilitate user operation, all operation buttons are arranged in the control area 103, which is positioned as far away from the mixing component 2 as possible. Figure 1 As shown, the insertion position of the mixing component 2 is designed at the front end of the main unit 1, and a handle for hand gripping is provided at the rear end of the main unit 1. The control area 103 is located on the rear surface of the handle. All operation buttons are centrally arranged on the rear surface of the handle, which is ergonomic and allows for single-handed operation of shifting gears, skipping gears, and retracting the whisk without changing the grip posture. The control area is far away from the mixing component to avoid accidental hand injury from the rotating whisk or splashing food during operation.

[0031] The release button 11 is slidably connected to the main unit 1 along the first direction, and when it slides, it can push the stirring component 2 out of the insertion channel 101. The stirring component 2 and the insertion channel 101 are connected not only through an interference fit, but also... Figure 7 and Figure 8 As shown, the insertion part of the stirring component 2 can be provided with a protruding structure, and a matching groove structure is provided in the insertion channel 101 to prevent detachment and slippage. Therefore, the main unit 1 only needs to have a through hole for the release button 11 to slide when pressed, and there is no need to provide a separate reset spring or other structure. The stirring component 2 is inserted into the insertion channel 101 and naturally pushes the release button 11 to reset.

[0032] The slide key 13 is slidably connected to the host 1 along the second direction, wherein the second direction and the first direction are vertical and horizontal, respectively, and are basically perpendicular. However, in practical applications, the second direction and the first direction can be tilted at an acute angle. The control area 103 has multiple gears along the sliding path of the slide key 13, including at least a zero gear, several intermediate gears, and a maximum gear. In this embodiment, the zero gear, 1 gear, 2 gear, 3 gear, 4 gear, and 5 gears are arranged in sequence, where gears 1, 2, 3, and 4 are intermediate gears, and gear 5 is the maximum gear. In practical applications, this can be adjusted appropriately. For example, if there are only zero, 1, and 2 gears, then gear 2 is the maximum gear, and gear 1 is an intermediate gear. The number of intermediate gears can be set as needed. Preferably, labels can be set on the control area 103 corresponding to each gear, which is a common setting method and will not be described in detail. The host 1 is provided with a switch base 14 corresponding to the control area 103. The switch base 14 is connected and fixed to the housing of the host 1 to facilitate the installation of parts such as the slide key 13 and the shift button 12. The switch base 14 is provided with a first metal plate 141, a second metal plate 142 corresponding to each intermediate gear position, and a third metal plate 143 corresponding to the highest gear position. The three metal plates are formed by bending thin metal sheets and have pins for connecting to the circuit. The slide key 13 is provided with a first conductive element 131. The first conductive element 131 has a first contact portion 132 that always abuts against the first metal plate 141 during the sliding of the slide key 13. The first conductive element 131 has a second contact portion 133 that abuts against the corresponding second metal plate 142 when it slides to an intermediate gear position and against the third metal plate 143 when it slides to the highest gear position. When the slide key 13 slides along a first direction, reaching the corresponding gear position connects the corresponding metal plate, thereby achieving control of different gear positions through electrical signal feedback. (See reference...) Figure 10 This is a schematic diagram of the control circuit.

[0033] The shift button 12 is slidably connected to the host 1 along the first direction. A first elastic element 144 is provided between the shift button 12 and the switch base 14 to allow the shift button 12 to be pressed. The shift button 12 is connected to a second conductive element 121. When the shift button 12 is pressed, the second conductive element 121 simultaneously abuts against the first metal plate 141 and the third metal plate 143, realizing rapid shifting and one-button high-power mode. For example, when the slide button 13 is in position 2, pressing the shift button 12 connects the circuit corresponding to position 5. At the same time, the circuit of position 2 remains connected, but the resistance of the high-power position 5 is small, realizing the power of position 5. The shift button directly shorts the highest position metal plate through the second conductive element, realizing one-button switching from any position to the maximum power without sliding step by step, greatly improving the operating efficiency. It is especially suitable for scenarios that require instant speed-up, such as whipping and shredding. The first elastic element provides an automatic reset function, returning to the original position when the button is released, which conforms to intuitive operating habits.

[0034] A non-skipping structure A is provided between the slide key 13 and the jump-off button 12 to prevent the jump-off button 12 from sliding when the slide key 13 is in the zero position, thus preventing the high-power mode from being directly activated via the jump-off button 12 when in the zero position. A non-detaching structure B is provided between the slide key 13 and the detach button 11 to prevent the detaching button 11 from sliding when the slide key 13 is in the middle or highest position, thus preventing the agitator 2 from being pushed out while it is in operation. Through the above structures, a physically locked structure eliminates the possibility of erroneous operation. For users, blind operation is sufficient, making it extremely convenient to use while achieving a high level of safety. This purely mechanical safety interlock is more reliable than electronic logic protection, does not rely on programs or sensors, and ensures safety even if the control module fails.

[0035] like Figure 5 and Figure 6As shown, in a preferred embodiment, the anti-gear skipping structure A includes a pressure post 122 on the gear skipping button 12, a stepped portion 123 on the pressure post 122, a slide groove 134 on the slide key 13 for the pressure post 122 to pass through, and a recess 135 on the side wall of the slide groove 134. The width of the stepped portion 123 is greater than the width of the recess 135 and less than the width of the slide groove 134. When the slide key 13 is in the zero position, the pressure post 122 enters the recess 135. Preferably, a guide slope 137 can be provided on the groove wall of the slide groove 134 near the recess 135 to push the stepped part 123 away from the slide groove 134. When the slide button 13 slides to the zero position, the stepped part 123 is locked on the outside of the groove of the slide groove 134, preventing the jump button 12 from sliding and thus locking it. The guide slope 137 can assist in pushing out the stepped part 123, making the jump button 12 move more smoothly. The above structure prevents the jump button 12 from being accidentally pressed in the zero position and avoids the machine from directly entering the high power mode when it is not started. The locking is achieved by using the width difference between the stepped part on the top pressure column and the recess of the slide groove. The structure is simple and does not require additional parts. The guide slope ensures that the stepped part can smoothly enter the recess when the slide button is switched to the zero position, and can automatically disengage when leaving the zero position. This ensures the reliability of the locking, improves the safety of use, and does not affect the normal operation feel.

[0036] like Figure 7 and Figure 8As shown, in a preferred embodiment, the main unit 1 is provided with a rotating sleeve 15 that can rotate relative to it. The insertion channel 101 is opened on the rotating sleeve 15. The rotating sleeve 15 is provided with a turbine part 151. The upper part of the output shaft of the drive device 102 is connected to a worm gear 16, which together with the turbine part 151 forms a worm gear mechanism. The rotating sleeve 15 is rotatably connected to the main unit 1 along its axial direction, which can be achieved by a bracket sleeved on the rotating sleeve 15. The rotating sleeve 15 is provided with a mounting hole, i.e., the insertion channel 101. The housing of the main unit 1 is provided with a corresponding through hole. The head of the stirring piece 2 has a curved rod structure for beating eggs or a blade. Its handle is provided with a protrusion 21. The wall of the mounting hole is provided with a snap-fit ​​groove 152 to accommodate the protrusion 21 when the stirring piece 2 is inserted, thereby preventing rotation. In addition, the rotating sleeve 15 and the output shaft 111 can be driven by a worm gear mechanism or by a helical gear set, bevel gear set, etc. The worm gear mechanism offers advantages such as smooth transmission and strong self-locking, effectively preventing reverse rotation caused by sudden load changes during whisking. It also efficiently converts the vertical rotation of the motor into the horizontal rotation required by the whisk, optimizing the internal space layout of the main unit. Furthermore, this embodiment includes two mixing components 2, both of which can be inserted into the main unit 1. This requires two corresponding rotating sleeves 15, symmetrically distributed on both sides of the worm gear component 16. Through worm gear transmission, the two rotating sleeves 15 rotate at the same speed but in opposite directions. With the two components rotating at the same speed, they can be designed to be close together, preventing interference between their heads. The opposite rotation improves the mixing effect. For example, this embodiment uses a double whisk design based on fluid dynamics principles; the opposite rotation creates a counter-shear flow field in the ingredients, breaking up a single vortex and significantly improving whisking efficiency and uniformity. The release button 11 is connected to a slider 17 that can slide relative to the main unit 1. The slider 17 is equipped with a push rod 171 that extends into the insertion channel 101 and can push the stirring component 2 out during its sliding. In use, simply press the release button 11 to push the slider 17 to slide. As the slider 17 slides, the push rod 171 pushes the handle of the stirring component 2 outward, achieving convenient and quick disassembly. Since the surface of the stirring component 2 often has sticky food residue, this non-contact disassembly structure avoids direct contact with stains, improving hygiene and simplifying the cleaning process, which is in line with the human-centered design concept of modern kitchen appliances. The anti-detachment structure B includes a baffle 136 disposed on the slide key 13. When the slide key 13 slides upward to the middle or highest position, the baffle 136 extends to the inside of the detachment button 11, that is, the side close to the slider 17, so that the detachment button 11 is blocked and cannot be pressed, thereby realizing the physical locking of the detachment button 11, eliminating the risk of accidental retraction of the bar in the working state, and the safety interlock is perfect.

[0037] Preferably, to facilitate the sliding of the slide key 13 and to make the structure more compact, such as Figure 9 As shown, the release button 11 is provided with a clearance groove 111 for the slide key 13 to be inserted. The clearance groove allows the slide key and the release button to be arranged alternately in space, which not only ensures their respective sliding strokes, but also reduces the overall height of the control area, making the main unit more compact and providing a better grip.

[0038] As a preferred embodiment, such as Figure 6 As shown, an interval damping structure C is provided between the slide key 13 and the switch base 14 to push the slide key 13 to the corresponding position. This makes the damping of the slide key 13 greater between positions and less damping at the corresponding position, allowing it to slide automatically to the corresponding position. The interval damping structure C includes a limiting groove 145 formed on the switch base 14 and corresponding to each position, a limiting member 138 that can slide relative to the slide key 13, and a second elastic member 139 located between the limiting member 138 and the slide key 13 and pushing the limiting member 138 into the limiting groove 145. The limiting member 138 is spherical, and a receiving slot can be formed on the slide key 13 to accommodate the limiting member 138, making the structure more stable. Of course, the interval damping structure C can also adopt other implementations, such as providing a groove on one and a convex spherical structure that can enter the groove on the other. Its advantages lie in providing a clear sense of gear position and damping changes when the sliding button 13 slides between gears, allowing it to automatically fall into the corresponding gear position and avoiding ambiguity or misoperation. The spherical limiter, together with the limiter groove, forms a clear gear feedback, allowing the user to clearly perceive the engagement position of each gear when sliding, thus preventing gear drift. The second elastic element provides moderate holding force, which is neither too tight and difficult to slide, nor too loose and prone to displacement, thus improving the accuracy of operation and the user experience.

[0039] As a preferred embodiment, such as Figure 6 As shown, a third elastic element 130 is provided between the slide key 13 and the switch base 14 to push the first conductive element 131 toward the switch base 14. As a further preferred embodiment, the third elastic element 130 is arranged on the slide key 13 at least at positions corresponding to the first contact portion 132 and the second contact portion 133. The first contact portion 132 and the second contact portion 133 are configured as raised arc structures, making the movement of the slide key 13 smoother. The third elastic element 130 always pushes the first conductive element 131 to adhere tightly to the metal plate, ensuring both low sliding resistance and reliable electrical connection during long-term use. Even if a small gap occurs due to wear or vibration after long-term use, it can be automatically compensated to prevent gear failure caused by poor contact. The arc contacts reduce sliding friction and extend the switch life.

[0040] As a preferred embodiment, such as Figure 6As shown, the first conductive element 131 is U-shaped, with the first contact portion 132 and the second contact portion 133 located on both sides of the first conductive element 131. The limiting element 138 is arranged between the first contact portion 132 and the second contact portion 133, and the limiting groove 145 is arranged between the first metal plate 141 and the third metal plate 143. The U-shaped first conductive element 131 separates the contacts on both sides, and the limiting element and limiting groove are reasonably arranged between the metal plates, resulting in a compact overall structure that is conducive to miniaturization and integration. In addition, the number of speed settings can be flexibly adjusted according to actual needs. This structural principle can be applied to various food processors such as juicers, soy milk makers, and blenders, as well as other small household appliances, demonstrating strong scalability.

[0041] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A multi-speed switch structure for a food processor, characterized in that, It includes a main unit (1) on which a stirring component (2) is detachably connected. The main unit (1) is provided with a plug-in channel (101) for inserting the stirring component (2) and a drive device (102) for driving the stirring component (2) to rotate after it is inserted into the plug-in channel (101). The host (1) has a control area (103) on its side wall. The host (1) has a release button (11), a gear skipping button (12) and a gear sliding button (13) in the control area (103). The release button (11) is slidably connected to the host (1) in the first direction and can push the stirring piece (2) out of the insertion channel (101) when it slides. The sliding key (13) is slidably connected to the host (1) along the second direction. The control area (103) has multiple gears along the sliding path of the sliding key (13), including at least a zero gear, several intermediate gears, and a maximum gear. The host (1) has a switch base (14) corresponding to the control area (103). The switch base (14) has a first metal plate (141) and a second metal plate (142) corresponding to each intermediate gear. 14) A third metal plate (143) is provided on the slide key (13) corresponding to the highest gear position. A first conductive element (131) is provided on the slide key (13). The first conductive element (131) is provided with a first contact part (132) that always abuts against the first metal plate (141) during the sliding of the slide key (13). The first conductive element (131) is provided with a second contact part (133) that abuts against the corresponding second metal plate (142) when it slides to the middle gear position and abuts against the third metal plate (143) when it slides to the highest gear position. The shift button (12) is slidably connected to the host (1) along the first direction. A first elastic element (144) is provided between the shift button (12) and the switch base (14) so ​​that the shift button (12) can be pressed. The shift button (12) is connected to a second conductive element (121). When the shift button (12) is pressed, the second conductive element (121) simultaneously abuts against the first metal plate (141) and the third metal plate (143). An anti-skip structure (A) is provided between the slide key (13) and the jump button (12) to prevent the jump button (12) from sliding when the slide key (13) is in the zero position, and an anti-disengagement structure (B) is provided between the slide key (13) and the release button (11) to prevent the release button (11) from sliding when the slide key (13) is in the middle position or the highest position.

2. The multi-speed switch structure for a food processor according to claim 1, characterized in that, The anti-gear skipping structure (A) includes a top pressure post (122) provided on the gear skipping button (12), a stepped portion (123) provided on the top pressure post (122), a slide groove (134) provided on the slide key (13) for the top pressure post (122) to pass through, and a notch (135) provided on the side wall of the slide groove (134). The width of the stepped portion (123) is greater than the width of the notch (135) and less than the width of the slide groove (134). When the slide key (13) is in the zero position, the top pressure post (122) enters the notch (135).

3. The multi-speed switch structure for a food processor according to claim 1, characterized in that, The host (1) is provided with a rotating sleeve (15) that can rotate relative to it. The insertion channel (101) is opened on the rotating sleeve (15). The rotating sleeve (15) is provided with a turbine part (151). The upper part of the output shaft of the drive device (102) is connected to a worm gear (16), which together with the turbine part (151) forms a worm gear mechanism. The ejection button (11) is connected to a sliding member (17) that can slide relative to the host (1). The sliding member (17) is provided with a push rod (171) that extends into the insertion channel (101) and can push the stirring member (2) out during its sliding process. The anti-ejection structure (B) includes a baffle (136) provided on the slide key (13). When the slide key (13) is in the middle or highest position, the baffle (136) is located on the side of the ejection button (11) and prevents the ejection button (11) from being pressed.

4. The multi-speed switch structure for a food processor according to claim 2, characterized in that, The slide (134) has a guide slope (137) on the end wall near the notch (135) to push the stepped part (123) away from the slide (134).

5. The multi-speed switch structure for a food processor according to claim 3, characterized in that, The release button (11) is provided with a clearance groove (111) for the slide key (13) to be inserted.

6. The multi-speed switch structure for a food processor according to any one of claims 1 to 5, characterized in that, A damping structure (C) is provided between the slide key (13) and the switch base (14) for pushing the slide key (13) to slide to the corresponding position.

7. The multi-speed switch structure for a food processor according to claim 6, characterized in that, The interval damping structure (C) includes a limiting groove (145) formed on the switch base (14) and corresponding to each gear position, a limiting member (138) that can slide relative to the slide key (13), and a second elastic member (139) located between the limiting member (138) and the slide key (13) and pushing the limiting member (138) into the limiting groove (145).

8. The multi-speed switch structure for a food processor according to claim 7, characterized in that, A third elastic element (130) is provided between the slide key (13) and the switch base (14) to push the first conductive element (131) toward the switch base (14).

9. The multi-speed switch structure for a food processor according to claim 8, characterized in that, The slide key (13) has a third elastic element (130) arranged at least at the corresponding positions of the first contact part (132) and the second contact part (133).

10. The multi-speed switch structure for a food processor according to claim 7, characterized in that, The first conductive element (131) is U-shaped, the first contact portion (132) and the second contact portion (133) are disposed on both sides of the first conductive element (131), the limiting member (138) is arranged between the first contact portion (132) and the second contact portion (133), and the limiting groove (145) is arranged between the first metal plate (141) and the third metal plate (143).

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