CN209863253U - Food preparation machine with speed regulation function - Google Patents

Abstract

The utility model discloses a food preparation machine with speed governing function belongs to food preparation machine technical field, including stirring cup and host computer, the host computer includes the casing, motor and button, the stirring cup includes the cup, bowl cover and crushing sword, crushing sword is by motor drive, the host computer still includes the rocker switch, driving lever and support frame, the rocker switch is located in the casing and is established ties with the motor, the rocker switch is including the speed governing button who is equipped with primary importance and second place, the top of driving lever is connected in the button, the bottom contacts in speed governing button, the support frame just is used for supporting the driving lever for the fixed setting of casing, the driving lever is worn to locate in the trompil on the support frame, the button is rotatable to be located on the casing, it realizes the speed governing to drive speed governing button through the driving lever when the button round trip to rotate switches between primary. The assembly parts on the key can be reduced on the premise of meeting the speed regulation requirement, the key structure is simplified, the assembly work is reduced, and the acting force required by pressing the key can be effectively reduced.

Description

Food preparation machine with speed regulation function

Technical Field

The utility model relates to a food preparation machine technical field especially relates to a food preparation machine with speed governing function.

Background

With the improvement of living standard, people have higher and higher requirements on nutrition of food, and in addition to the upgrading of market consumption, food processing machines such as food processors and juicers are more and more favored by consumers as new upgraded consumer goods in kitchen appliances. The existing food processor generally comprises a host and a stirring cup, wherein a motor is arranged in the host, a crushing knife is arranged in the stirring cup, and the motor drives the crushing knife to rotate to cut and crush materials, so that the purpose of food processing is realized. The main machine is provided with a key for controlling the power-on and power-off of the motor and a speed regulation switch for regulating the rotating speed of the motor, in order to utilize the key to realize the purpose of speed regulation at the same time, the inner wall of the key is provided with a spring and a support rod, and the key acts on the speed regulation switch to realize the rotating speed regulation of the motor through the support rod when rotating back and forth. Can keep balance when putting through the motor in order to guarantee the button pressurized, avoid the button because of the uneven condition that takes place to incline of atress, generally need set up three piece at least spinal branch vaulting poles and three springs on the inner wall of button, the assembly part is more, and the assembly step is complicated, in addition, because the elasticity of spring is great, needs great effort when button pressurized puts through the motor, is unfavorable for improving and uses experience.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects and deficiencies existing in the prior art, the utility model provides a food processor with a speed regulation function, which has a simple structure and is convenient to operate.

In order to realize the technical purpose, the food processor with the speed regulation function provided by the utility model comprises a stirring cup and a host computer which is detachably arranged on the stirring cup, the host computer comprises a casing, a motor arranged in the casing and a button which is arranged on the casing and used for starting and stopping the motor, the stirring cup comprises a cup body, a cup cover and a crushing knife, the crushing knife is driven by the motor, the host computer still includes the rocker switch, driving lever and support frame, the rocker switch is located in the casing and is established ties with the motor, the rocker switch is including the speed governing button that is equipped with primary importance and second place, the top of driving lever is connected in the button, the bottom contacts in the speed governing button, the support frame is fixed to be set up and is used for supporting the driving lever for the casing, be equipped with on the support frame with driving lever clearance fit's slot hole, the driving lever is worn to locate in the slot hole, the button is rotatable to be located on the casing, drive speed governing button through the driving lever when the button makes a round trip to rotate and switch the rotational speed that realizes regulating motor between.

Preferably, a pillar protruding downwards is arranged on the inner wall of the key, an insertion hole into which the top end of the deflector rod is inserted is formed in the pillar, and the top end of the deflector rod is connected to the key through the matching with the insertion hole; or the inner wall of the key is provided with a pillar protruding downwards, the top end of the shifting lever is provided with a blind hole for the pillar to insert, and the top end of the shifting lever is connected to the key through the matching of the blind hole and the pillar.

Preferably, the circumferential outer wall of the shifting rod is provided with a limiting ring, the outer diameter of the limiting ring is larger than the inner diameter of the long hole, and the shifting rod is limited in the vertical direction by the limiting ring.

Preferably, the host computer still includes fixed connection in the frame of casing, and the button is connected in the frame, and rocker switch and support frame are all located in the frame.

Preferably, the support frame is connected to the rack through a buckle structure, and the buckle structure comprises a buckle arranged on the support frame and a clamping groove arranged on the rack; or the support frame is connected to the rack through a buckle structure, and the buckle structure comprises a buckle arranged on the rack and a clamping groove arranged on the support frame; or the support frame is arranged on the frame through a fastener.

Preferably, the support frame includes horizontal frame plate and two vertical frame plates that correspond the setting and be used for supporting horizontal frame plate, and on horizontal frame plate was located to the slot hole, the bottom of vertical frame plate was connected in the frame.

Preferably, the host machine further comprises a safety switch arranged in the casing, the safety switch is connected with the motor in series, and the host machine is arranged on the stirring cup and triggers the safety switch when the key is pressed.

Preferably, the shifting lever can be arranged in the long hole in a transverse sliding mode, an avoiding distance is vertically arranged between the shifting lever and the key, and the avoiding distance is larger than the distance of downward movement when the key is pressed to trigger the safety switch.

Preferably, the host further comprises at least one spring for driving the key to reset, the spring is stressed and deformed when the key is pressed, and the spring drives the key to reset upwards when the key is released.

Preferably, the long hole is a strip-shaped long hole or an arc-shaped long hole.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. the utility model provides a food preparation machine improves the structure of host computer, especially relates to the concrete structure that is used for adjusting speed governing button on the rocker switch. A driving lever for driving the speed regulating button to switch back and forth is arranged in the host through the support frame, and the speed regulating button is driven by the driving lever to switch between a first position and a second position to realize speed regulation when the key rotates. The shifting lever has a certain supporting function on the key, so that the number of assembly parts on the key can be reduced as much as possible on the premise of meeting the speed regulation requirement, and particularly, the spring for keeping the key balanced is favorable for simplifying the key structure and reducing the assembly work. In addition, because the quantity of the springs is reduced to some extent, the acting force for connecting the motor by pressing the key is correspondingly reduced, and the use experience of the whole machine is favorably improved.

2. The top end of the shifting lever is connected to the key through the matching with the support, and the connecting structure between the shifting lever and the key is simple and convenient to assemble. Furthermore, set up the spacing collar on the circumference outer wall of driving lever, make the driving lever receive spacingly in vertical through this spacing collar, improve the stability of driving lever, ensure that the driving lever can drive the speed governing button smoothly when the button removes and switch between primary importance and second place, guarantee the validity of speed governing.

3. On rocker switch and support frame were located and were added the frame of establishing, the concrete structure of reasonable host computer that sets up reduced the shaping degree of difficulty and the equipment degree of difficulty of each component rationally under the prerequisite that satisfies the operation requirement. Furthermore, the support frame is arranged on the rack through a buckle structure, and the assembly structure between the support frame and the rack is simple and convenient to assemble quickly.

4. The safety switch is triggered when the key is pressed, so that the key has the functions of starting and stopping the motor and adjusting the rotating speed of the motor, the effect of one-key double control is achieved, the components of the host are simplified while the operation requirements are met, and the reduction of the assembly workload and the reduction of the cost are facilitated.

5. An avoiding distance is vertically arranged between the shifting rod and the key, the avoiding distance is larger than the distance of downward movement when the key is pressed to trigger the safety switch, and the condition that the shifting rod interferes the action of downward movement of the key to trigger the safety switch is effectively avoided through the avoiding distance, so that the key can be moved down to the right position to smoothly trigger the safety switch.

6. At least one spring is arranged on the main machine, and when the key is pressed to trigger the safety switch, the spring is stressed and compressed. When the key is released, the spring can automatically drive the key to move upwards and reset, and the motor is stopped. The purpose of automatically driving the key to reset is realized through the spring, the motor can be timely turned off when the key is loosened, and the safety of the whole machine work is favorably improved.

Drawings

FIG. 1 is a schematic view of a food processor according to an embodiment of the present invention;

FIG. 2 is an exploded view of a main frame of a food processor according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of an upper portion of a main body of a food processor according to an embodiment of the present invention;

FIG. 4 is a schematic view of a shifter lever of a food processor according to an embodiment of the present invention;

FIG. 5 is a schematic view of a support frame of a food processor according to an embodiment of the present invention;

FIG. 6 is a schematic view illustrating a shift lever of a food processor according to an embodiment of the present invention disposed on a support frame;

FIG. 7 is a schematic view of a frame of a food processor according to an embodiment of the present invention;

FIG. 8 is a schematic view of a button of a food processor according to an embodiment of the present invention;

FIG. 9 is a schematic view of the connection between the safety switch, the bracket and the connecting rod of the food processor according to the embodiment of the present invention;

FIG. 10 is a schematic view of the connection between the key and the frame of the food processor according to the embodiment of the present invention;

fig. 11 is a partial sectional view of the upper portion of the main body of a food processor according to an embodiment of the present invention.

In the figure, 100-a main machine, 110-a machine shell, 110a shell, 110 b-a bottom cover, 120-a motor, 121-a motor shaft, 130-a key, 131-a support column, 132-an insertion hole, 133-a trigger column, 134-a convex column, 135-a concave hole, 136-a limiting rod, 137-a connecting column, 138-a connecting hole, 139-a limiting column, 1311-an annular boss, 140-a rack, 141-a mounting port, 142-a clamping groove, 143-an avoiding hole, 144-a through hole, 145-a limiting hole, 146-a positioning hole, 150-a second spring, 160-a coupler, 200-a stirring cup, 210-a cup body, 220-a cup cover, 230-a crushing knife, 310-a rocker switch, 311-a speed regulating button, 320-a deflector rod and 321-a limiting ring, 322-blind hole, 330-support frame, 331-long hole, 332-transverse frame plate, 333-vertical frame plate, 334-buckle, 335-limit convex edge, 410-safety switch, 411-trigger button, 420-bracket, 430-connecting rod, 431-trigger inclined plane and 440-first spring.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

Example one

As shown in fig. 1 to 6, a food processor with speed regulation function provided by the embodiment of the present invention includes a stirring cup 200 and a host 100 detachably disposed on the stirring cup, the host 100 includes a casing 110, a motor 120 disposed in the casing and a button 130 disposed on the casing for starting and stopping the motor, the stirring cup 200 includes a cup 210, a cup cover 220 and a crushing knife 230 disposed in the cup 210, and the crushing knife 230 is driven by the motor 120. The host 100 further includes a rocker switch 310, a shift lever 320 and a support frame 330, the rocker switch 310 is disposed in the casing 110 and is connected in series with the motor 120, the rocker switch 310 includes a speed-regulating button 311 having a first position and a second position, the top end of the shift lever 320 is connected to the key 130, the bottom end of the shift lever contacts with the speed-regulating button 311, the support frame 330 is fixedly disposed relative to the casing 110 and is used for supporting the shift lever 320, the support frame 330 is provided with a slot 331 in clearance fit with the shift lever 320, the shift lever 320 is disposed in the slot 331 in a penetrating manner, the key 130 is rotatably disposed on the casing 110, and the speed-regulating button 311 is driven by the shift lever 320 to switch between the first position and the second position to adjust.

When the key rotates, the speed regulating button is driven by the driving lever to be switched between the first position and the second position to realize speed regulation, so that the number of assembly parts on the key can be reduced as much as possible on the premise of meeting the speed regulating requirement, and particularly, the spring for keeping the key balance is favorable for simplifying the key structure and reducing the assembly work. In addition, because the quantity of the springs is reduced to some extent, the acting force for connecting the motor by pressing the key is correspondingly reduced, and the use experience of the whole machine is favorably improved.

The housing 110 includes a housing 110a and a bottom cover 110b fixedly connected to the bottom of the housing 110a, and referring to fig. 7, in order to reasonably set the specific structure of the host 100, the host 100 further includes a frame 140 fixedly connected to the top end of the housing 110a, the rocker switch 310 and the supporting frame 330 are disposed on the frame 140, and the key 130 is disposed outside the frame and connected to the frame.

In this embodiment, the rack 140 is provided with a mounting opening 141 matching with the rocker switch 310, and the rocker switch 310 is fixedly disposed on the rack 140 by matching with the mounting opening 141. The supporting frame 330 is disposed on the frame 140 through a fastening structure, the driving lever 320 is disposed in the slot 331 of the supporting frame 330 in a sliding manner, and the bottom end of the driving lever abuts against the speed-adjusting button 311. The supporting frame 330 comprises a transverse frame plate 332 and two vertical frame plates 333 correspondingly arranged for supporting the transverse frame plate 332, a long hole 331 is arranged on the transverse frame plate 332, the long hole 331 is a strip-shaped long hole and is arranged along the length direction of the transverse frame plate 332, and the long hole 331 is positioned right above the speed regulating button 311. The bottom end of each vertical frame plate 333 is provided with a buckle 334, the rack 140 is provided with a one-to-one corresponding slot 142 matched with the buckle 334, and the support frame 330 is mounted on the rack 140 through the matching of the buckle 334 and the slot 142. In order to improve the stability of the supporting frame 330, the lower end of the vertical frame plate 333 is further provided with a limiting convex edge 335 corresponding to the buckle 334 for matching with the rack 140.

Referring to fig. 8, in order to realize the connection between the shift lever 320 and the button 130, a pillar 131 formed to protrude downward is disposed on the inner wall of the button 130, an insertion hole 132 into which the top end of the shift lever 320 is inserted is disposed on the pillar 131, and the top end of the shift lever 320 is inserted into the insertion hole 132 to realize the connection with the button 130.

In order to vertically limit the shifting lever 320 and avoid the defect that the shifting lever cannot effectively drive the speed regulating button 311 to switch back and forth due to vertical movement, a limiting ring 321 is arranged on the circumferential outer wall of the shifting lever 320, and the outer diameter of the limiting ring 321 is larger than the inner diameter of the long hole 331. In this embodiment, the limiting ring 321 is specifically located below the cross frame plate 332, and the shift lever 320 cannot move up under the limiting effect of the limiting ring 321, so as to ensure that the bottom end of the shift lever 320 effectively contacts the speed-adjusting button 311.

In order to start and stop the motor 120 through the button 130, the host 100 further includes a safety switch 410 disposed in the housing 110, the safety switch 410 is connected in series with the motor 120, the button 130 moves downward to trigger the safety switch 410 to start the motor 120 when being pressed, and the button 130 moves upward to release the safety switch 410 to stop the motor 120 when being released.

Referring to fig. 9, the safety switch 410 is provided with a trigger button 411, and in order to achieve the purpose that the key 130 effectively triggers the safety switch 410, the main unit 100 further includes a bracket 420 and a connecting rod 430, and both the bracket 420 and the connecting rod 430 are vertically movably disposed in the housing 110. The safety switch 410 is fixed on the bracket 420, and the link 430 is fitted to the lower end of the bracket 420 through the shaft hole. A first spring 440 for driving the connecting rod 430 to reset is further arranged between the connecting rod 430 and the bracket 420, the bottom end of the first spring 440 is in contact with the connecting rod 430 to realize positioning, and the top end of the first spring 440 is in contact with the bracket 420 to realize positioning. The top end of the link 430 is provided with a trigger slope 431 for pressing the trigger button 411, and the bottom end of the link 430 extends out of the cabinet 110 through the bottom cover 110b downward. The frame 140 is provided with a avoiding hole 143 for the top end of the bracket 420 to pass through, the top end of the bracket 420 extends upwards out of the frame 140, and the inner wall of the key 130 is provided with a triggering column 133 corresponding to the top end of the bracket 420 up and down.

In order to make the key 130 move down to the right position when being pressed to smoothly trigger the safety switch 410, an avoiding distance is vertically arranged between the deflector rod 320 and the key 130, and the avoiding distance is larger than the distance of moving down when the key 130 is pressed to trigger the safety switch 410. Referring to fig. 3, in the present embodiment, the avoiding distance H1 is specifically a height difference between the top surface of the shift lever 320 and the top wall of the insertion hole 132 when the button 130 is not pressed, and the distance H2 when the shift lever 320 moves down to trigger the safety switch 410 is specifically a height difference between the bottom surface of the support 131 and the top surface of the support 330 when the button 130 is not pressed.

Referring to fig. 10, in order to enable the key 130 to automatically move up to shut down the motor 120 when released, the main body 100 further includes a second spring 150 for restoring the key 130. In this embodiment, a convex pillar 134 protruding downward is disposed on an inner wall of the key 130, a concave hole 135 is disposed on the convex pillar 134, a limiting rod 136 is inserted into the concave hole 135, and the second spring 150 is disposed in the concave hole 135 and located between the convex pillar 134 and the limiting rod 136.

The key 130 is connected with the bracket 420 through a screw, in order to meet the purpose that the key 130 can move vertically and rotate back and forth, a plurality of connecting columns 137 which are formed in a protruding mode downwards are arranged on the inner wall of the key 130, and connecting holes 138 are formed in the connecting columns 137. The top of the frame 140 is provided with through holes 144 corresponding to the connecting posts 137, the through holes 144 are arc-shaped holes, screws penetrate through the through holes 144 from bottom to top and then are screwed into the connecting holes 138, and the outer diameter of the head of each screw is larger than the diameter of each through hole 144.

In order to improve the stability between the key 130 and the frame 140, the inner wall of the key 130 is provided with a limiting post 139 protruding downward, the top of the frame 140 is provided with a limiting hole 145 for inserting the limiting post 139, the limiting hole 145 is an arc-shaped hole, and the limiting post 139 is inserted into the limiting hole 145 and is in clearance fit with the limiting hole 145. Further, the central portion of the inner wall of the key 130 is further provided with a downward protruding annular boss 1311, the central portion of the top of the frame 140 is provided with a positioning hole 146 for inserting the annular boss 1311, and the annular boss 1311 is inserted into the positioning hole 146 and is in clearance fit with the positioning hole.

The crushing blade 230 is detachably mounted in the cup body 210, and the top end of the crushing blade 230 extends out of the cap 220 when mounted in the cup body 210. In order to realize the detachable transmission connection between the crushing blade 230 and the motor 120, the bottom of the main body 100 is provided with a coupling 160 which is in transmission connection with the motor shaft 121. When the main body 100 is mounted on the mixing cup 200, the top end of the crushing blade 230 is inserted into the coupling 160.

When the stirring cup is used, the crushing knife 230 is firstly installed in the cup body 210, materials are placed in the cup body 210, the cup cover 220 is covered, then the main machine 100 is installed on the stirring cup 200, and at the moment, the connecting rod 430 moves upwards for a short distance but is not enough to trigger the safety switch 410. When the power is turned on, the button 130 moves downwards against the preset force of the second spring 150 and drives the bracket 420 to move downwards through the trigger post 133 when the button 130 is pressed, the trigger inclined plane 431 is effectively contacted with the trigger button 411 to trigger the safety switch 410 when the bracket 420 moves downwards to a position against the preset force of the first spring 440, and the motor 120 is electrified to drive the crushing cutter 230 to rotate.

When the key is released, the second spring 150 drives the key 130 to automatically move upwards for resetting, the first spring 440 drives the bracket 420 to automatically move upwards for resetting, and the trigger button 411 is released, so that the motor 120 is automatically and timely turned off.

When the rotating speed of the motor 120 needs to be adjusted, the key 130 is rotated, the key 130 drives the shift lever 320 to translate, and the shift lever 320 drives the speed-adjusting button 311 to switch between the first position and the second position when translating, so as to adjust the rotating speed of the motor 120. Of course, the speed may be adjusted during the operation of the motor 120, or the speed may be adjusted before the motor 120 is started.

It is understood that the positions of the clips 334 and the slots 142 can be interchanged, that is, the clips are disposed on the rack 140, the slots matched with the clips are disposed on the supporting frame 330, and the supporting frame 330 is mounted on the rack 140 through the cooperation of the slots and the clips.

It will be appreciated that the support frame 330 may be fixedly mounted to the frame 140 by other suitable means, such as screws, etc.

It should be understood that the number of the second spring 150 is not limited to one as described above and shown in the drawings, and may be two, and correspondingly, two convex columns 134 and two limiting rods 136 are provided.

It is understood that the long hole 331 may be configured as an arc-shaped long hole.

Example two

As shown in fig. 11, the second embodiment of the present invention is an equivalent embodiment of the first embodiment, and is different from the first embodiment in that, in order to realize the connection between the top end of the shift lever 320 and the key 130, the inner wall of the key 130 is provided with a pillar 131 formed by a downward protrusion, the top end of the shift lever 320 is provided with a blind hole 322 for the pillar 131 to be inserted into, the top end of the shift lever 320 is connected to the key 130 through the cooperation between the blind hole 322 and the pillar 131, and the pillar is in clearance fit with the blind hole.

In order to limit the shift lever 320 and prevent the shift lever 320 from being excessively moved down by the button 130 to damage the speed adjusting button 311, the limiting ring 321 is located above the cross frame plate 332.

In this embodiment, in order to avoid interference between the pillar 131 and the key 130 with the action of the key 130 when being pressed to trigger the safety switch 410, the avoiding distance H1 is a height difference between the top surface of the shift lever 320 and the inner wall of the key 130 when the key is not pressed, and the distance H2 when the key 130 is pressed to move down to trigger the safety switch 410 is a height difference between the bottom surface of the pillar 131 and the bottom wall of the blind hole 322 when the key is not pressed.

The other structures of the second embodiment are the same as those of the first embodiment, and are not described in detail here.

In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.

Claims (10)

1. A food processor with speed regulation function comprises a stirring cup and a host machine which is detachably arranged on the stirring cup, wherein the host machine comprises a shell, a motor arranged in the shell and a key which is arranged on the shell and used for starting and stopping the motor, the stirring cup comprises a cup body, a cup cover and a crushing knife, the crushing knife is driven by the motor, its characterized in that, the host computer still includes rocker switch, driving lever and support frame, the rocker switch is located in the casing and is established ties with the motor, the rocker switch is including the speed governing button that is equipped with primary importance and second place, the top of driving lever is connected in the button, the bottom contacts in the speed governing button, the support frame is for the fixed setting of casing and be used for supporting the driving lever, be equipped with on the support frame with driving lever clearance fit's slot hole, the driving lever is worn to locate in the slot hole, the button is rotatable to be located on the casing, drive speed governing button through the driving lever when the button makes a round trip to rotate and switch the rotational speed that realizes the accommodate motor between primary importance.

2. The food processor as defined in claim 1, wherein the key has a post formed on an inner wall thereof to protrude downward, the post having a hole for inserting a top end of the shifter lever, the top end of the shifter lever being connected to the key by being engaged with the hole; or the inner wall of the key is provided with a pillar protruding downwards, the top end of the shifting lever is provided with a blind hole for the pillar to insert, and the top end of the shifting lever is connected to the key through the matching of the blind hole and the pillar.

3. The food processor of claim 1, wherein the deflector rod is provided with a stop collar on an outer circumferential wall thereof, an outer diameter of the stop collar being larger than an inner diameter of the elongated hole, the stop collar vertically limiting the deflector rod.

4. The food processor of claim 1, wherein the main body further comprises a frame fixedly attached to the housing, the button is attached to the frame, and the rocker switch and the support bracket are both disposed on the frame.

5. The food processor of claim 4, wherein the support frame is coupled to the frame via a snap-fit arrangement, the snap-fit arrangement including a snap fit on the support frame and a slot on the frame; or the support frame is connected to the rack through a buckle structure, and the buckle structure comprises a buckle arranged on the rack and a clamping groove arranged on the support frame; or the support frame is arranged on the frame through a fastener.

6. A food processor as claimed in claim 4, wherein the support frame comprises a transverse frame plate and two vertical frame plates correspondingly arranged for supporting the transverse frame plate, the elongated hole being provided in the transverse frame plate, the bottom ends of the vertical frame plates being connected to the frame.

7. The food processor of claim 1, wherein the main body further comprises a safety switch disposed within the housing, the safety switch being connected in series with the motor, the main body being disposed on the blending cup and the safety switch being activated when the button is pressed.

8. The food processor of claim 7, wherein the shifter lever is slidably disposed in the elongated hole in a lateral direction, and an avoiding distance is provided in a vertical direction between the shifter lever and the key, the avoiding distance being greater than a distance that the key moves downward when the key is pressed to activate the safety switch.

9. The food processor of claim 7, wherein the main body further comprises at least one spring for returning the button, the spring being forced to deform when the button is depressed, the spring returning the button upward when the button is released.

10. A food processor as claimed in any one of claims 1 to 9, wherein the slot is an elongate slot or an arcuate slot.