CN210169869U - Safe and reliable's composite coupler and food preparation machine - Google Patents

Abstract

A safe and reliable coupler assembly of a food processor and the food processor comprise an upper coupler and a lower coupler which are mutually inserted and matched, wherein the upper coupler comprises a fixed shell and an upper electrode, the lower coupler comprises a lower electrode, the upper electrode and the lower electrode are electrically connected when the couplers are inserted, the lower coupler further comprises a shell with an opening on one surface, the lower electrode is installed in the shell, the shell is provided with a first through hole for the upper electrode to pass through, the lower coupler further comprises a micro switch embedded in the shell, and the upper coupler triggers the micro switch when the couplers are inserted. The microswitch is embedded in the coupler, and the functions of electric transmission and switch conduction can be simultaneously realized when the microswitch is plugged, so that the microswitch is compact in structure and high in functionality. In addition, the coupler can realize the triggering of the microswitch without independently arranging a triggering structure, and the linkage is better. For the food processor, the positioning structure is reduced, and the food processor is safe and reliable.

Description

Safe and reliable's composite coupler and food preparation machine

Technical Field

The utility model relates to a food processing field especially relates to a safe and reliable's coupler subassembly and food preparation machine for food processing machine.

Background

Food preparation machine wide application is in people's life, current food preparation machine commonly used, including built-in motor's frame and the stirring cup of setting in the frame top, the stirring cup includes the cup and sets up in the bowl cover of cup upper end opening part, is equipped with crushing sword in the stirring cup, and the motor passes through the shaft coupling drive and smashes the sword rotation in order to eat the material and smash processing in the stirring cup. The stirring cup is also provided with a cutter head and a heating body, wherein the heating body is usually a heating pipe and is arranged around the periphery of the cutter head; the mixing cup is also usually provided with a temperature controller and an anti-overflow electrode. The temperature controller, the anti-overflow electrode and the heating body are electrically connected with the base through the coupler.

The existing coupler usually includes an upper coupler and a lower coupler, and the electric and signal transmission is generally realized by inserting 4-6 electrodes into each other. Because the couplers are mutually inserted when the stirring cup is matched with the base, the upper coupler and the lower coupler are required to be accurately aligned, the use requirement of consumers is high, and the experience is not good. The existing coupler assembly is usually only used for electric transmission, the function is relatively single, and for a food processor, when the switch function is needed, a switch is needed to be arranged separately, so that the number of accessories is increased, and the cost of the accessories and the cost of the whole machine are increased.

In order to improve the safety of the food processor, an independent microswitch is also arranged between the stirring cup and the machine base, and generally comprises a microswitch arranged on the machine base and a trigger rod arranged on the stirring cup, wherein when the stirring cup is arranged on the machine base, the trigger rod triggers the microswitch to electrify the whole food processor. In the existing scheme, the micro switch and the coupler are arranged in a separated mode, so that a structure needing to be positioned when the stirring cup is installed between the stirring cup and the base at least comprises the coupler, the coupler and the micro switch structure, the positioning structure is multiple, the positioning is required to be accurate, and the use experience is poor. Meanwhile, due to the fact that a plurality of positioning structures need to be arranged, the upper surface of the base is complex in arrangement and has a plurality of dead angles, the base is troublesome to clean, a plurality of accessories need to be installed in the production process of the base, and production efficiency is low. And the coupler and the microswitch are independently arranged and are respectively connected by wires, so that the internal circuit is complex, and the production and maintenance efficiency is low. The coupler and the microswitch are used as two accessories, and need to be managed respectively in the production management process, so that the production efficiency is poor, and the cost is increased. The two fittings also bring about an increase in volume, which makes the food processor bulky.

Disclosure of Invention

An object of the utility model is to provide a convenient operation, safe and reliable's composite coupler subassembly and food preparation machine.

In order to achieve the above object, the utility model provides a following technical scheme: a safe and reliable composite coupler comprises an upper coupler and a lower coupler which are mutually spliced and matched, the upper coupler comprises a fixed shell and an upper electrode, the lower coupler comprises a lower electrode, the upper electrode and the lower electrode are electrically connected when the coupler is plugged, wherein the lower coupler further comprises a shell with an opening on one surface, the lower electrode is arranged in the shell, the shell is provided with a first through hole for the upper electrode to pass through, the lower coupler also comprises a micro switch embedded in the shell, the upper coupler triggers the micro switch when the coupler is plugged, the micro switch and the lower electrode are arranged in parallel and form a switch area and a coupling area in the shell, the switch area has a volume ratio within the housing of no more than 1/2, and the upper coupler activates the microswitch when the coupler is plugged.

Preferably, the lower coupler further comprises a mounting seat, the lower electrode and the microswitch are arranged on the mounting seat, and the mounting seat is detachably fixed in the shell.

Preferably, the mounting base comprises a first mounting base and a second mounting base, the lower electrode is arranged on the first mounting base, the micro switch is arranged on the second mounting base, and the first mounting base and the second mounting base are detachably fixed in the shell respectively.

Preferably, the upper coupler is provided with a trigger part, the trigger part is a trigger rod arranged in the fixed shell, and the trigger rod can extend into the lower coupler to directly or indirectly trigger the microswitch.

Preferably, the lower coupler is provided with a pushing part, the pushing part can move in the shell, the moving stroke of the pushing part is crossed with the triggering stroke of the microswitch, and the pushing part is pushed by the upper coupler and further triggers the microswitch.

Preferably, a partition board is further arranged in the shell and isolates the lower electrode from the microswitch.

Preferably, the casing is square, the set casing is corresponding square, the casing lateral surface still is equipped with prevents slow-witted muscle, the set casing be equipped with prevent slow-witted groove that slow-witted muscle corresponds.

Preferably, the conduction stroke of the upper electrode and the lower electrode is smaller than the trigger stroke of the microswitch, so that the microswitch is triggered by pilot conduction when the coupler is plugged.

Preferably, the micro switch comprises a plurality of micro switches, and the micro switches can be triggered simultaneously or respectively when the upper coupler is plugged with the lower coupler.

In order to solve the technical problem, the utility model provides a convenient safe food preparation machine, including the frame with set up in stirring cup on the frame, be equipped with motor and control panel in the frame, the stirring cup includes the cup and sets up in the bowl cover of cup upper end opening part, be equipped with in the cup by motor drive's crushing sword, wherein, the stirring cup pass through the coupler with the frame electricity is connected, the coupler is any technical scheme of the aforesaid coupler, the stirring cup is still including setting up in the cup of cup bottom, cup bottom periphery is provided with the fixed orifices, go up the coupler set up in fixed orifices department, the coupler can pass down the fixed orifices and with go up the coupler cooperation.

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

1. the utility model discloses in, will micro-gap switch embedded in the coupler, micro-gap switch can realize the function that telex and switch switched on simultaneously when pegging graft, compact structure, and is functional strong. Embed micro-gap switch in the coupler, reduced independent micro-gap switch accessory, efficiency promotes on production management, simultaneously, the volume of coupler adds two accessories of micro-gap switch for among the prior art coupler, does not have apparent increase for accessory storage efficiency improves, and food preparation machine's assembly size reduces greatly, and then can reduce food preparation machine's volume. And the coupler can realize the triggering of the microswitch without independently arranging a triggering structure, the linkage is better, namely, when the coupler is used by the food processor, the microswitch can be triggered only by ensuring the correct alignment of the coupler, and meanwhile, the electric transmission is ensured, and the reliability of the food processor is greatly improved. Because coupler and micro-gap switch are conductive parts, with micro-gap switch embedding coupler inside, no longer need set up seal structure respectively, and only need seal the coupler and can guarantee food preparation machine's safety, the complete machine security is showing and is promoting. The microswitch and the lower electrode are arranged in parallel, so that the utilization of the inner space of the coupler is maximum, and the coupler is compact in structure and small in size. The volume ratio of the switch area in the shell is not more than 1/2, only the switch function is needed, the micro switch does not need to be too large, and the coupling area needs to transmit a strong current function, and the electrodes need enough distance to meet the safety requirement, so that more difference in the coupler is divided into the coupling area, and more coupling functions can be met. The effect of compact structure of the coupler is ensured, and the safety performance of the coupler is fully ensured.

2. Install bottom electrode and micro-gap switch in the casing through setting up the mount pad, make bottom electrode and micro-gap switch easy dismounting, on the one hand, whole coupler inside parts are general, low in production cost, and production efficiency is high, and on the other hand, when needs maintenance during the coupler, also can dismantle fast and change the accessory for cost of maintenance greatly reduced.

3. The mounting seat is disassembled into a plurality of mounting seats, and the lower electrode and the microswitch are respectively arranged on the different mounting seats, so that in the actual use process, the coupler part and the microswitch part do not need to be maintained at the same time and are separately arranged, the corresponding parts can be respectively disassembled according to the requirements, the parts which normally work do not need to be disassembled, and the maintenance cost is further reduced.

4. The upper coupler is internally provided with the trigger part, particularly the trigger rod, and the microswitch is triggered by the trigger rod when the upper coupler is plugged, so that the upper coupler is simple in structure and high in reliability. The trigger bar can be directly inserted into the lower coupler and triggers the micro switch, the trigger bar can also be inserted into the lower coupler and triggers the micro switch through an indirect structure, the realization scheme is multiple, and different technical schemes can be selected according to different use environments. The microswitch is triggered by the trigger rod, and the linkage performance of the upper coupler and the lower coupler is better. The micro switch is embedded into the coupler, and the mutual independence of the coupling function and the switching function is ensured.

5. At inside promotion portion that sets up of coupler down to rely on promotion portion to trigger micro-gap switch, can will go the switch again and keep apart better of doing with the periphery, the unable direct contact micro-gap switch in the external world promptly, like this, under the circumstances that micro-gap switch does not switch on, food preparation machine is unable to be switched on, and the security performance promotes greatly. The microswitch is not in direct contact with the periphery, but is triggered by a mechanical structure, the waterproof and dustproof structural functions of the microswitch do not need to be independently set, and the coupler assembly and the food processor are simplified in structure, improved in production efficiency and reduced in cost. The moving stroke of the pushing part is crossed with the triggering stroke of the microswitch, so that the pushing part can trigger the microswitch in the pushing moving process of the upper coupler, a triggering structure is not required to be additionally arranged, the structure is simple to realize, and the reliability is high.

6. Set up fixed muscle in the casing, can promote micro-gap switch's installation steadiness, can not warp the aversion when guaranteeing micro-gap switch's triggering to guarantee that micro-gap switch normally triggers. The mount pad passes through buckle and casing buckle, and the dismouting is swift convenient, maintains the commonality rate.

7. Set up the baffle in the casing, keep apart bottom electrode and micro-gap switch, effectively prevent that the short circuit that probably produces between bottom electrode and the micro-gap switch is electrically conductive, promotes the security performance of coupler. Meanwhile, the partition plate can effectively improve the strength of the shell, prevent the shell from deforming and further improve the reliability of the lower coupler.

8. Set up on the baffle and trigger the groove for it is stronger with micro-gap switch linkage nature when upper electrode is pegged graft with the bottom electrode, in the in-service use process, can only rely on the grafting of upper electrode, can realize switching on of micro-gap switch, and no longer need set up alone and trigger micro-gap switch's trigger piece, simple structure, convenient to use.

9. The base is provided with the mounting hole, and the coupler is mounted in the base, so that the mounting reliability of the coupler is improved, and the coupler is prevented from being randomly detached by a user to cause danger. Because the mechanical transmission performance requirement of the power part of the food processor is high, usually the coupling is arranged at the middle parts of the machine base and the stirring cup, the lower coupler is arranged at one side of the machine base, the power transmission of the food processor cannot be influenced, and the lower coupler and the coupling can be used together for ensuring the reliable installation of the stirring cup and the machine base.

10. The square casing and the square fixing casing are arranged, and meanwhile, the fool-proof ribs are arranged, so that the machine base can be accurately positioned during production and assembly, the danger of the whole machine caused by error of a production operator during assembly is prevented, the requirement on the operator is reduced, and the production cost and the production efficiency are improved.

11. The upper electrode and the lower electrode are firstly conducted, but the micro switch is not triggered, so that the whole food processing machine is not electrified, and the discharge arc caused by strong electricity cannot be generated in the conducting process of the upper electrode and the lower electrode, so that the use safety of the upper electrode and the lower electrode is ensured. When the microswitch is conducted, the upper electrode is contacted with the lower electrode, the whole machine is electrified, the upper electrode is conducted with the lower electrode, and the normal electrification of all functional components of the stirring cup is ensured.

12. The micro switches are arranged to be multiple, the upper coupler and the lower coupler can be triggered simultaneously or respectively when being plugged, different stirring cups can be arranged on the food processor, different stirring cups trigger different micro switches or different micro switch combinations, the machine base can automatically judge different stirring cups according to different trigger paths, and therefore different processing programs can be automatically selected, and the food processor is more intelligent. And the judgment is carried out by means of strong electricity of the micro switch, and the judgment is not only carried out by means of a program, so that the reliability and the accuracy of the judgment are greatly improved. Even if the micro-switches are not used for judging the stirring cup, the reliability and the stability of the micro-switches can be improved.

13. The micro switch is embedded in the coupler, the positioning requirement on the micro switch can be reduced when the stirring cup is installed and positioned, and the complete machine can be electrified and electrically connected from top to bottom only by positioning and inserting the coupler when the stirring cup is installed, so that the stirring cup is installed quickly and conveniently. Meanwhile, the microswitch is embedded into the coupler, the conductivity of the existing coupler is not influenced, and the microswitch is universal with the existing coupler, simple in structure, low in production cost and high in universality. And because the microswitch structure is embedded, the whole structure of the upper surface of the base is simple, the dead angle required to be cleaned is less, the base is convenient to clean, and the base can be quickly installed when being produced. The microswitch is embedded into the lower coupler, the microswitch and the lower coupler can be connected through a group of wires, the reliability is high, the connection is convenient, and the production and the maintenance are fast and efficient. The stirring cup can not be provided with a trigger structure independently to trigger the microswitch, so that the structures of the machine base and the stirring cup which need to be arranged are reduced, and the reliability is also greatly improved.

14. Set up the cup bottom stirring cup portion, can protect cup bottom, especially to the food preparation machine who has heating function, the heating member sets up the cup through being located cup bottom, can seal the heating member, prevents that the user from touching the heating member, and the security is high. The heating body is provided with the fixing hole, the upper coupler is arranged in the cup seat and fixed through the fixing hole, the contact part of the upper coupler and the charged part and the electric connection part are ensured to be in the closed space formed by the cup seat and the cup body, and the safety of the coupler is ensured. The lower coupler can pass through the fixing hole and is in plug fit with the upper coupler, and the normal use function of the coupler is not influenced.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the safe and reliable coupler assembly and food processor of the present invention.

Fig. 2 is an exploded view of a coupler according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a coupler according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a lower coupler shell according to a first embodiment of the present invention.

Fig. 5 is a cross-sectional view of the coupler according to the first embodiment of the present invention.

Fig. 6 is a second cross-sectional view of the coupler structure according to the first embodiment of the present invention.

Fig. 7 is an exploded view of a coupler assembly and a food processor according to a second embodiment of the present invention.

Fig. 8 is a cross-sectional view of a coupler according to a second embodiment of the present invention.

Fig. 9 is a schematic view of a safe and reliable coupler assembly and a coupler of a food processor according to a third embodiment of the present invention.

Fig. 10 is a cross-sectional view of a third embodiment of a safe and reliable coupler assembly and food processor according to the present invention.

Fig. 11 is an exploded view of a fourth embodiment of a safe and reliable coupler assembly and food processor according to the present invention.

Fig. 12 is a schematic structural view of a fifth embodiment of the coupler assembly and the food processor according to the present invention.

The names of the components marked in the figures are as follows:

1. a stirring cup; 101. a metal inner cup; 102. a plastic outer cup; 103. heating a tube; 11. a cup body; 12. a handle; 13. a cup holder; 130. a fixing hole; 2. a machine base; 200. a machine head; 201. a motor; 202. a crushing knife; 21. mounting holes; 3. an upper coupler; 31. a stationary case; 310. a mounting seat; 311. a fool-proof groove; 33. an upper electrode; 331. an upper electrode connecting pole; 34. an electrode plate; 341. a fixing plate; 342. an electrode tank; 343. a trigger lever; 4. a lower coupler; 41. a housing; 410. a first through hole; 411. a housing mount; 412. a snap-in hole; 413. preventing the fool-proof rib; 414. fixing the ribs; 415. a partition plate; 416. a trigger slot; 417. a chute; 418. a second through hole; 43. a shutter; 431. a rib is protruded; 432. a seal member; 433. isolating ribs; 434. a guide surface; 435. a pushing part; 436. pushing the surface; 44. a first elastic member; 45. a lower electrode; 451. a lower electrode contact; 452. a lower electrode buckle; 453. an upper wire slot of the lower electrode; 454. a lower electrode buckle sheet; 46. a first mounting seat; 461. a first positioning post; 462. a first mounting seat buckle; 463. a lower electrode fixing buckle; 47. a second mounting seat; 470. a support pillar; 471. a second mounting seat buckle; 472. a second mounting base positioning plate; 5. a microswitch; 50. mounting a shell; 500. a sliding groove; 51. a movable spring plate; 511. the movable elastic sheet is raised; 52. a static spring plate; 53. a second elastic member; 54. a movable rod; 540. a fourth elastic member; 55. a fixed block; 56. a movable frame; 560. the movable frame is raised; 57. a third elastic member; 58. a second movable bar; 580. a fifth elastic member; 61. an upper coupling; 62. and a lower coupling.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In particular, in the present application, the "upper coupler" and the "lower coupler" are defined only to distinguish two portions of the coupler, and are not necessarily limited to the positional relationship between the "upper" and the "lower". The common names, which can also be defined as the male end of the coupler and the female end of the coupler, are used to distinguish the two parts that are plugged into each other. Obviously, the "upper coupler" and the "lower coupler" may also be various installation implementations such as front-back insertion, left-right insertion, and rotary insertion.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example one

As shown in fig. 1-6, the utility model provides a safe and reliable's food preparation machine coupler subassembly and food preparation machine, food preparation machine includes frame 2 and sets up stirring cup 1 on frame 2, be equipped with motor and control panel (not shown in the figure) in the frame 2, stirring cup 1 includes cup 11, bowl cover (not shown in the figure), cup 13, cup 11 upper end is equipped with the opening, the bowl cover set up in the opening part, cup 11 lateral wall is equipped with handle 12, be equipped with in the cup 11 by motor drive's crushing sword (not shown in the figure), the motor is connected with lower connecting axle ware 62, it is connected with last shaft joint 61 to smash the sword, go up shaft joint 61 and shaft joint 62 power connection down to make motor drive smash the sword. The stirring cup 1 is electrically connected with the base 2 through a coupler.

The coupler comprises an upper coupler 3 and a lower coupler 4, the upper coupler 3 is arranged at the bottom of the stirring cup 1, and the lower coupler 4 is arranged on the periphery of the upper end of the machine base 2. Preferably, the upper coupler is located below the handle, and the lower coupler is located at a position corresponding to the upper coupler on the upper end of the base. The cup body 11 is mounted and connected to the base 13, an inner space is formed between the cup body 11 and the base 13, the base 13 is provided with a fixing hole 130, the upper coupler 3 is mounted in the base 13, that is, in the space formed by the cup body 11 and the base 13, and the upper coupler 3 is exposed through the fixing hole 130, so that the lower coupler 4 can pass through the fixing hole 130 and then be inserted into the upper coupler 3 to be conducted with the upper coupler. The coupler is arranged at the periphery only in relation to the relative position of the coupling, i.e. the coupling is defined as the center of the food processor, the coupler being arranged. When the stirring cup 1 is installed, the coupler and the coupling are respectively in insertion fit to realize electric and power connection. Due to the stability requirement during power transmission, the power transmission generally requires accurate positioning and good centering property, so the coupling is usually arranged at the center of the machine base and the stirring cup. The coupler is used for electric transmission, can realize plug contact, namely can realize the electric transmission, and is arranged on the periphery relative to the coupling, so that the transmission of the coupling and the electric transmission of the coupler are not influenced.

The preferred setting of the area of the fixed hole 130 is 20 cm-100 cm. For example, 20cm, 23cm, 25cm, 28cm, 30cm, 32cm, 36cm, 38cm, 40cm, 43cm, 45cm, 48cm, 50cm, 55cm, 58cm, 60cm, 62cm, 65cm, 67cm, 70cm, 72cm, 75cm, 78cm, 80cm, 82cm, 85cm, 88cm, 91cm, 93cm, 95cm, 98cm have been had the had been had. The advantages of such an arrangement are: the upper coupler is arranged at the fixing hole, and the lower coupler penetrates through the fixing hole and is in plug-in fit with the upper coupler. If the area of fixed orifices is undersize, will make the area undersize of coupler, and then the volume undersize, must make the distance between the electrode not enough, especially will satisfy under the prerequisite of electrode safe distance and micro-gap switch's the safe distance simultaneously, can not the undersize. If the area of the fixing hole is set to be too large, the size of the coupler is too large, so that the size of the food processor is increased, and the requirement of a user for pursuing a small-size food processor cannot be met better.

The upper coupler 3 comprises a fixed shell 31 and an upper electrode 33, a mounting seat 310 is arranged on the outer side wall of the fixed shell 31, and the upper coupler 3 is mounted on the stirring cup 1 through the mounting seat 310. Preferably, the cup holder 31 is provided with a through hole, and the upper coupler 3 is fixed in the stirring cup and exposed from the through hole. The fixed shell 31 is internally provided with an electrode plate 34, the electrode plate 34 extends downwards to form a fixed plate 341, the fixed plate 341 is provided with an electrode groove 342, the upper electrode 33 is arranged in the electrode groove 342, preferably, the upper electrode 33 protrudes out of the electrode groove 342, so that the upper electrode 33 and the lower electrode 45 are better contacted and conducted. The upper electrode 33 is provided in plural, and the lower electrode 45 corresponding thereto is provided in the same mathematical formula. In this embodiment, the number of the upper electrodes 33 is 4, the number of the fixing plates 341 is two, and the upper electrodes 33 are disposed on two opposite sides of the fixing plates 341. The upper end of the upper electrode 33 is also provided with an upper electrode connecting pole 331, and the upper coupler 3 is connected with a lead through the upper electrode connecting pole 331 and further connected with each electric device in the stirring cup. Preferably, the upper electrode 33, the electrode plate 34 and the fixing case 31 are integrally formed. The benefits of this arrangement are: the integrally formed upper coupler can ensure the structure to be reliable; meanwhile, the fixing plate and the electrode groove are arranged, so that the electrode is strengthened and fixed, and the upper electrode cannot deform after being used for a long time; the upper electrodes are respectively arranged on two sides of the fixing plate, so that short circuit danger caused by mutual conduction between the inner electrodes of the coupler can be effectively prevented.

The lower coupler 4 comprises a shell 41, a lower electrode 45 and a microswitch 5. Casing 41 is square, and one side opening, casing 41 surface is equipped with casing mount 411, frame 2 upper surface is equipped with mounting hole 21, mounting hole 21 is square, lower coupler 4 passes through casing mount 411 install in frame 2, and by mounting hole 21 stretches out frame 2, casing 41 with still be equipped with the sealing member between the frame 2. The lateral wall of the shell 41 is further provided with a fool-proof rib 413, the corresponding fool-proof groove 311 is arranged on the fixed shell 31, and the fool-proof rib 413 can guarantee that no installation error occurs during installation of the lower coupler 4, so that the production efficiency of the food processor is improved.

The upper surface of the housing 41 is provided with a first through hole 410, and preferably, the first through hole 410 is disposed on a surface opposite to the opening. The lower coupler 4 further comprises a shielding plate 43, the shielding plate 43 is arranged in the housing 41 and shields the first through hole 410, preferably, a convex rib 431 is arranged on the upper surface of the shielding plate 43, the convex rib 431 extends into the first through hole 410, and a sealing member 432 is further sleeved on the convex rib 431. The first through hole 410 includes two elongated holes arranged side by side, and the rib 431 and the sealing member 432 are provided as two corresponding holes. The shielding plate 43 can slide in the shell and is pushed by the first elastic piece 44, when the lower coupler 4 is in a non-plugging state, the shielding plate 43 shields the first through hole, so that food materials or dust and the like can be effectively prevented from entering the interior of the coupler, and a safety effect is achieved; when the coupler is plugged, the shutter 43 moves downward under the pushing of the electrode plate 34 to open the first through hole 410, so that the upper electrode 33 is inserted into the housing 41 and is in contact with and conducted to the lower electrode 45.

The lower coupler 4 further includes a mounting seat, which in this embodiment includes a first mounting seat 46 and a second mounting seat 47. The lower electrode 45 is mounted on the first mounting seat 46, wherein the lower electrode 45 includes a lower electrode buckle 452 and a lower electrode buckle piece 454, and correspondingly, the first mounting seat 46 includes a lower electrode fixing buckle 463, and the lower electrode is buckled to the lower electrode fixing buckle 463 by the lower electrode buckle 452 and the lower electrode buckle piece 454. A first positioning post 461 is further disposed in the middle of the first mounting seat 46, one end of the first elastic element 44 is sleeved on the first positioning post 461, and the other end of the first elastic element abuts against the shielding plate 43. A fastening hole 412 is formed in a side wall of the lower end of the housing 41, and the first mounting seat 46 is fastened to the fastening hole 412 through a first mounting seat fastening 462. The upper end of the lower electrode 45 is further provided with a lower electrode contact 451, when the lower electrode 45 is conducted with the upper electrode 33, the lower electrode contact 451 is contacted with the upper electrode 33, preferably, the lower electrode contact 451 is made of a material with excellent conductivity, such as copper or a plating layer, so that the conductivity of the coupler can be improved, and the performance reduction caused by oxidation generated between the electrodes after the coupler is plugged for a long time can be prevented. And the lower electrode is clamped in the shell through the first mounting seat, so that the lower electrode is convenient to assemble and disassemble, the production efficiency is high, and the lower electrode is convenient to maintain. The lower end of the lower electrode 45 is provided with a lower electrode clamping groove 453, and the lower electrode 45 is connected with an electrode through the lower electrode clamping groove 453 and finally connected with a power supply or a control panel.

The micro switch 5 is embedded in the housing 41, the micro switch 5 is mounted on the second mounting seat 47 through the second mounting seat positioning plate 472, and the second mounting seat 47 is fastened to the fastening hole 412 through the second mounting seat fastening 471. The micro-switch 5 comprises an installation shell 50, a movable elastic sheet 51, a static elastic sheet 52, a second elastic piece 53 and a movable rod 54, wherein the movable elastic sheet 51, the static elastic sheet 52, the second elastic piece 53 and the movable rod 54 are arranged in the installation shell 50, the shell 51 is provided with a sliding groove 500, the movable rod 54 is arranged in the sliding groove 500 and extends into the installation shell 50, one end of the second elastic piece 53 is connected with the movable elastic sheet 51, the other end of the second elastic piece is connected with the installation shell 50, when the movable rod 54 is stressed, the movable elastic sheet can be pushed and pressed, and the second elastic piece 53 finally enables the movable elastic sheet 51 to be in contact with the static elastic sheet 52 to trigger the micro-switch. Preferably, the second elastic member 53 is an elastic sheet, and the second elastic member 53 is configured to push the movable elastic sheet 51 to perform an instantaneous motion, that is, when the second elastic member 53 deforms under the urging of the movable rod 54, the movable elastic sheet 51 is not immediately pushed to perform a motion, but when a touch state or a trigger position is reached, the movable elastic sheet 51 is rapidly pushed to be in contact with the stationary elastic sheet 52, so that the advantage of the configuration is that: usually the micro-gap switch is used for switching on the heavy current, namely 220V commercial power, when the movable elastic sheet and the static elastic sheet slowly approach and contact, the movable elastic sheet and the static elastic sheet can generate discharge when not contacting, the electric spark can destroy the contact of the movable elastic sheet and the static elastic sheet, so that the conductivity of the contact is reduced, the performance of the micro-gap switch is reduced, the sensitivity is reduced, the normal use of the food processor is further influenced, and serious dangers such as fire is caused by the electric spark when serious. The second elastic piece is set to push the movable elastic piece to be triggered instantly, so that the movable elastic piece and the static elastic piece are contacted and conducted in a very short time, electric sparks are not generated or a contact is not damaged in time, the service life of the microswitch is ensured, and the normal use of the food processor is further ensured.

The lower electrode 45 and the microswitch 5 are respectively clamped in the shell 41 through the first mounting seat 46 and the second mounting seat 47, when the coupler is assembled, the lower electrode can be mounted in the first mounting seat, the switch unit is mounted in the second mounting seat, and then the first mounting seat and the second mounting seat are fixed in the shell, in addition, when the lower coupler is assembled and maintained, the lower coupler can be respectively disassembled according to different functions, for example, when the microswitch 5 needs to be replaced, only the second mounting seat 47 needs to be disassembled, so that the microswitch 5 is disassembled for maintenance, and the lower electrode 45 does not need to be disassembled together. Thus, the maintenance cost is greatly reduced. Of course, the lower electrode and the micro switch can be clamped in the shell through an integral mounting seat, so that one accessory can be reduced.

The shutter 43 is provided with a pushing part 435, the pushing part 435 is a protrusion arranged on the side of the shutter 43, the moving stroke of the pushing part 435 is crossed with the triggering stroke of the microswitch 5, that is, when the pushing part 435 slides in the housing 41, the triggering stroke of the microswitch 5 and the stroke of the pushing part 435 are within, and when the pushing part 435 slides normally, the microswitch 5 can be triggered. The pushing part 435 may push the movable rod 54 to trigger the microswitch 5 when the shutter 43 slides downward, and preferably, the pushing part 435 is provided with a pushing surface 436, and the pushing surface 436 is an inclined surface arranged along the sliding direction of the shutter 43, and the inclined surface is gradually increased along the sliding direction. Preferably, the trigger procedure of the coupler setting is set as follows: when the upper coupler is in a plugging process, the shielding plate is pushed to open the first through hole, the upper electrode is inserted into the shell to be in contact conduction with the lower electrode, after the upper electrode is in contact conduction with the lower electrode, the micro switch is triggered by the trigger stroke of the pushing part, the food processor is further electrified, and electric power and signal transmission are achieved between the base and the stirring cup through the coupler. The advantages of such an arrangement are: the microswitch can be triggered by the shielding plate without an independent trigger structure, the structure is simple, the coupler is switched on and the microswitch is triggered to realize linkage, and the reliability is higher. And the conduction stroke of the upper electrode and the lower electrode is smaller than the trigger stroke of the microswitch, so that the food processor can be powered on after the upper electrode and the lower electrode are contacted firstly, namely in the contact process of the upper electrode and the lower electrode, the microswitch is not switched on, and the upper electrode and the lower electrode are only in mechanical contact or slide, so that the problems of discharge and the like generated in the process of conductive conduction of the upper electrode and the lower electrode in a belt are effectively solved, the use reliability of the upper electrode and the lower electrode is effectively improved, and the service life of the coupler is further prolonged.

A partition 415 is further disposed in the housing 41, the lower electrode 45 and the micro switch 5 are respectively disposed on two sides of the partition 415, the partition 415 is provided with a trigger slot 416, and the pushing portion 435 and the movable rod 54 can be in contact through the trigger slot 416. The inner wall of the housing 41 is further provided with a fixing rib 414 for positioning the lower electrode and the micro switch. Through setting up the baffle, make bottom electrode with micro-gap switch is in keep apart in the casing, bottom electrode with micro-gap switch can not mutual interference, prevents to take place electric danger such as short circuit between bottom electrode and the micro-gap switch for the coupler security is higher. Meanwhile, the partition plate can also improve the mechanical strength of the shell, so that the shell is not deformed, and the use reliability of the coupler is also ensured. And the microswitch is conducted through the trigger groove, so that the normal trigger of the microswitch is not influenced. And the lower electrode and the microswitch are positioned by arranging the fixing ribs, so that the stable structure of the lower coupler is ensured.

As shown in fig. 3-6, the shielding plate 43 is provided with an isolation rib 433, the isolation rib 433 is disposed on the lower surface of the shielding plate 43, the isolation rib 433 extends downward and is inserted into the position space of the lower electrode 45, the isolation rib 433 separates the space in the housing 41 to form a plurality of isolation cavities, and the plurality of lower electrodes 45 are respectively located in the isolation cavities, so that only one lower electrode is located in a single isolation cavity. The advantages of such an arrangement are: through setting up the isolation muscle and the isolation chamber that forms for mutual isolation can not mutual interference between the bottom electrode, has reduced the risk of mutual short circuit between the bottom electrode, promotes the safety in utilization of coupler.

As shown in fig. 6, the shielding plate 43 is further provided with a guiding surface 434, the guiding surface 434 is arranged opposite to the lower electrode 45, and the guiding surface 434 is arranged along the sliding direction of the shielding plate 43, so that the shielding plate 43 forms a wedge shape with a large top and a small bottom at the position opposite to the lower electrode 45. When the upper coupler is plugged with the lower coupler, the upper coupler presses the shielding plate 43 and pushes the shielding plate 43 to slide downwards, the guide surface 434 is gradually contacted with the lower electrode 45 and pushes the lower electrode 45 to expand outwards to open a space for the upper electrode 33, after the upper electrode 33 is inserted into the space of the lower electrode 45, the shielding plate 43 releases the lower electrode 45, and the lower electrode 45 restores the original state and is contacted and conducted with the upper electrode 33. The advantages of such an arrangement are: by arranging the guide surface, the lower electrode is only contacted with the upper electrode at the later stage of plugging in the process of plugging the upper coupler, the contact is not needed to be completed at the early stage and is always in a sliding friction state, the lower electrode and the upper electrode are protected, and the conduction reliability of the upper electrode and the lower electrode is effectively improved. Meanwhile, the contact is made of a material with good conductivity, so that the conductivity of point contact can be improved.

The microswitch is embedded within the housing such that the lower coupler has both a switching region and a coupling region. The lower coupler is configured to be no more than 80cm in volume. For example, it may be: 35cm, 73cm, 70cm, according to year, 62cm, 60cm, 58cm, 56cm, 53cm, 50cm, 48cm, 45cm, 43cm, 40cm, 37cm, 35cm, 32cm, 30cm, 25cm, 20cm, etc. The advantages of such an arrangement are: with micro-gap switch embedded in the casing, make this application the coupler is for two accessories of traditional coupler plus micro-gap switch down, and the volume can be done is enough little, can also satisfy coupling function and switch function simultaneously, if the volume of coupler is too big down, can not effectual shrink coupler, certainly also can not improve food preparation machine's whole volume.

The benefits of this arrangement are: the micro switch is embedded into the coupler, so that the food processor is simple in structure, few in positioning structure, convenient to install and use and high in reliability. The coupler and the microswitch are integrally arranged, the coupler and the microswitch can be connected only through one circuit, and the internal circuit is simple and is beneficial to processing and assembling of the food processor.

It can be understood that the microswitch can also be directly clamped in the shell without arranging a mounting seat.

It can be understood that the mixing cup can be an integrated cup body without a cup seat.

It can be understood that the food processor comprises a base and a stirring cup, the stirring cup is arranged on the base, the stirring cup is fixed on the base in a rotating mode, the lower coupler is arranged on the base, when the upper coupler is rotatably arranged on the stirring cup, the side wall of the lower coupler is inserted into the lower coupler to realize conduction, the lower coupler comprises a shell, one side of the shell is provided with an opening, the shell is also provided with a first through hole for an upper electrode to pass through, and the first through hole is arranged on one side adjacent to the opening.

It will be appreciated that the housing of the lower coupler may also be formed from two snap connections, so that the housing need not be provided with an opening.

It can be understood that a mounting sinking platform is further arranged below the machine base, the upper coupler is mounted on the mounting sinking platform, and the lower coupler can pass through the mounting sinking platform and is coupled with the upper coupler.

It will be appreciated that the mixing cup may be provided without a handle, and the upper and lower couplers may be eccentrically located relative to the coupling.

It will be appreciated that the upper coupler is not disposed below the handle but is centered on the coupling at an angle to the handle.

It will be appreciated that the coupler may also be provided in a cylindrical shape.

Example two

As a second embodiment of the convenient and safe food processor of the present invention, the main differences from the first embodiment are: the microswitch is not provided with an installation shell.

As shown in fig. 7 and 8, in the present embodiment, the coupler includes an upper coupler 3 and a lower coupler 4, and the upper coupler 3 includes a fixed shell 31, an upper electrode 32, and a fixed plate 34.

The lower coupler 4 comprises a shell 41, a lower electrode 45, a microswitch 5, a first mounting seat 46 and a second mounting seat 47. The upper surface of the housing 41 is provided with a first through hole 410, and the housing 41 is provided with a shielding plate 43 for shielding the first through hole 410 and a first elastic member 44 for pushing the shielding plate 43.

The micro switch 5 comprises a movable elastic sheet 51 and a static elastic sheet 52, the static elastic sheet 51 and the movable elastic sheet 52 are mounted on the second mounting seat 47, and the mounting seat 47 is clamped in the casing 41. The micro-switch 5 further includes a movable frame 56, a second elastic member 53 and a third elastic member 57, one end of the second elastic member 53 is connected to the movable frame 56, and the other end is connected to the movable elastic sheet 51, preferably, the second elastic member 53 is a spring and is provided in two. The side wall of the movable frame 56 is provided with a movable frame protrusion 560, the side wall of the shielding plate 43 is provided with a pushing part 435, the pushing part 435 pushes the protrusion 560 when the shielding plate 43 slides downwards, and drives the second elastic part 53 and finally drives the movable elastic piece 51 to be in contact with the static elastic piece 52, and the second elastic part 53 is configured to push the movable elastic piece 51 to move instantaneously. The third elastic member 57 can push the movable frame 56 to reset, and finally drive the movable elastic sheet 51 to separate from the static elastic sheet 52 to disconnect the power supply.

The second mounting seat 47 is further provided with a supporting column 470, and the supporting column 470 is used for supporting and limiting the movable elastic sheet 51, so that the movable elastic sheet 51 is prevented from deforming under stress, and the microswitch 5 is ensured to be used reliably.

The advantages of the embodiment are: the movable elastic sheet and the static elastic sheet are detachably arranged in the shell of the lower coupler through the second mounting seat, the structure is simple, the disassembly is convenient, and after the second mounting seat is disassembled, the movable elastic sheet and the static elastic sheet are directly visible, so that the maintenance of the micro switch is convenient. In addition, the cost of the microswitch can be reduced by removing the mounting shell.

It is understood that the second elastic member may also be a spring. The number may be set to 1 or more.

It is understood that the pushing portion can also directly push the movable frame without separately providing a movable frame protrusion. The movable frame can also be directly pushed by the upper coupler.

EXAMPLE III

As a third embodiment of the convenient and safe food processor of the present invention, the main differences from the first embodiment are: the micro switch has different triggering structures.

As shown in fig. 9 and 10, the lower coupler includes a housing 41, a first through hole 410 is formed in an upper surface of the housing 41, the first through hole 410 is a long strip-shaped hole arranged side by side on one side of the lower electrode, and a large through hole on one side of the micro switch, so that the first through hole is integrally concave, and a convex rib having a shape corresponding to that of the first through hole 410 is formed on an upper surface of the shielding plate 43 to close the first through hole. The shutter 43 is provided with a pushing portion 435 above the microswitch 5, and preferably, the pushing portion 435 has an inclined surface.

The micro switch 5 is disposed in the housing 41, the micro switch 5 includes a movable rod 54 and a fourth elastic member 540, and the micro switch 5 is clamped in the housing 41 through a second mounting seat 47. A sliding slot 417 is further disposed in the housing 41, and the movable rod 54 can slide in the sliding slot 417 and reset under the pushing of the fourth elastic member 540. The upper end of the movable rod 54 is provided with an inclined surface matched with pushing. When the shielding plate moves downwards under the pressure of the upper coupler, the pushing part pushes the movable rod to move downwards and drives the microswitch to be triggered and conducted; when the upper coupler is separated from the lower coupler, the movable rod is driven by the fourth elastic piece to slide upwards to reset and drive the micro switch to be disconnected.

The advantages of the embodiment are: the shielding plate directly presses the movable rod and drives the microswitch to trigger, and the device is simple in structure and high in reliability. The inclined plane is arranged, so that force is uniformly applied when the microswitch is pushed, and the microswitch is stable in operation.

It can be understood that the pushing part is not provided with an inclined plane, and the upper end of the corresponding movable rod is not required to be provided with an inclined plane.

It will be appreciated that the first through hole may be provided as two side-by-side elongated holes extending from above the lower electrode to above the micro switch, the shutter being adapted to activate the micro switch when the upper coupler is plugged.

Example four

As a fourth embodiment of the convenient and safe food processor of the present invention, the main differences from the first embodiment are: the micro switch structure is provided with two micro switch structures.

As shown in fig. 11, the coupler includes an upper coupler 3 and a lower coupler 4, the upper coupler 3 includes a fixed housing 31, an upper electrode 33, and a fixed plate 34, and the upper electrode 33 and the fixed plate 34 are mounted in the fixed housing 31. The upper coupler is provided with a trigger part, the trigger part is a trigger rod 343 arranged on the fixed plate 34, and the trigger rod 343 is a cylinder arranged on the lower surface of the fixed plate 34.

The lower coupler 4 includes a housing 41, a lower electrode 45 and a micro switch, the upper surface of the housing 41 is provided with a first through hole 410 and a second through hole 418, a shielding plate 43 disposed in the housing 41 can shield the first through hole 410, a first elastic member 44 is used for pushing the shielding plate 43, and the lower electrode 45 is clamped in the housing 41 through a first mounting seat 46.

The micro switch comprises a second movable rod 58, a fifth elastic element 580, a movable elastic sheet 51, a static elastic sheet 52 and a fixed block 55, and the micro switch is clamped in the shell 41 through a second mounting seat 47. The movable elastic sheet 51 and the static elastic sheet 52 are mounted on the fixed block 55, preferably, the movable elastic sheet 51, the static elastic sheet 52 and the fixed block 55 are integrally formed, the movable elastic sheet 51 and the static elastic sheet 52 are long metal plates, and the fixed block 55 is located in the middle of the fixed block, so that one ends of the movable elastic sheet 51 and the static elastic sheet 52 are connected, and the other ends of the movable elastic sheet 51 and the static elastic sheet 52 are connected with a wire and are connected with the outside to achieve a switching function.

The movable spring piece 51 is further provided with a movable spring piece protrusion 511, the movable spring piece protrusion 511 is formed by bending a metal sheet, and the second movable rod 58 can slide in the shell 41 and can push the movable spring piece protrusion 511 and drive the movable spring piece 51 to deform to be in contact with and conducted with the static spring piece 52. The fifth elastic member 580 pushes the movable rod 58 to reset and turns off the micro switch.

The movable elastic sheet 51, the static elastic sheet 52 and the fixed block 55 are arranged in two groups, and are respectively connected and fixed with the second mounting seat 47 and clamped in the casing 41. When the movable rod 58 presses the movable spring plate 51, the two spring plates are respectively conducted.

The matching mode of the coupler is as follows: when the upper coupler is plugged, the upper electrode and the lower electrode are in mutual contact to realize coupling function electric transmission. The trigger rod is inserted into the second through hole and then presses the second movable rod, the second movable rod further pushes the movable elastic sheet to be protruded, the movable elastic sheet is deformed and is in contact conduction with the static elastic sheet, and therefore the switch function is achieved.

The advantages of this embodiment are: the two groups of microswitch structures are arranged, even if one group of microswitch can not work normally, the other group of microswitch can also work normally, and the reliability of the microswitch is ensured.

It is understood that the microswitch assembly can also be provided in multiple sets. Two or more groups of micro switches can work simultaneously, respectively or in a combined mode. For example, 2 microswitches numbered 1 and 2 can realize the selection of 1 conduction, 2 conduction and 1 and 2 conduction at the same time. By the working mode, different functions can be selected according to different stirring cups. For example, the food processor may include a mixing cup with a heating function, a mixing cup without a heating function, a mixing cup for dry grinding and crushing, a mixing cup for grinding meat, a mixing cup for kneading dough, and the like, and different mixing cups may have different functions. And through setting up multiunit micro-gap switch, when different stirring cups were placed, can trigger different micro-gap switch, perhaps different micro-gap switch combination to make food processor can set up the stirring cup of different functions automatically, and then can the automatic selection program that corresponds. The intelligent degree of the food processor is improved. In addition, the food processor is identified by a mechanical switch, and is not differentiated by a program, so that the reliability is higher.

It can be understood that the trigger rod can also directly pass through the second through hole and press the movable elastic sheet bulge and drive the microswitch to be conducted.

It can be understood that the housing is not provided with the second through hole, but is provided with an integrated first through hole, and the upper electrode and the trigger rod both pass through the first through hole and respectively realize the coupling function and the switching function.

EXAMPLE five

As a fifth embodiment of the convenient and safe food processor of the present invention, the main differences from the first embodiment are: the food processor is structurally different.

As shown in fig. 12, the food processor includes a machine head 200 and a stirring cup 1, the upper end of the stirring cup 1 is open, the machine head 200 is disposed at the opening, the machine head 200 is provided with a motor 201, the head end of the motor 201 is provided with a crushing knife 202, and the crushing knife 202 extends into the stirring cup 1. The stirring cup 1 comprises a metal inner cup 101 and a plastic outer cup 102, and a heating pipe 103 is arranged on the side wall of the lower end of the metal inner cup 101.

The handpiece 200 and the stirring cup 1 are electrically connected through the upper coupler 3 and the lower coupler 4. The coupler 3 and the lower coupler 4 can be replaced by the solutions of the above embodiments.

It will be appreciated that the coupler structure of the present invention may also be used in other food processors that utilize both a coupler and a microswitch structure.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention, which is not illustrated herein.

Claims (10)

1. A safe and reliable coupler assembly for a food processor comprises an upper coupler and a lower coupler which are mutually inserted and matched, the upper coupler comprises a fixed shell and an upper electrode, the lower coupler comprises a lower electrode, the upper electrode and the lower electrode are electrically connected when the coupler assembly is plugged, it is characterized in that the lower coupler also comprises a shell with an opening on one surface, the lower electrode is arranged in the shell, the shell is provided with a first through hole for the upper electrode to pass through, the lower coupler also comprises a micro switch embedded in the shell, the micro switch and the lower electrode are arranged in parallel and form a switch area and a coupling area in the shell, the switch area has a volume ratio within the housing of no more than 1/2, and the upper coupler activates the microswitch when the coupler assembly is plugged.

2. The coupler assembly of claim 1, wherein the lower coupler further comprises a mounting base, the lower electrode and the micro switch being disposed on the mounting base, the mounting base being removably secured to the opening.

3. The coupler assembly of claim 2, wherein the mounting base comprises a first mounting base and a second mounting base, the lower electrode is disposed on the first mounting base, the micro switch is disposed on the second mounting base, and the first mounting base and the second mounting base are detachably fixed at the opening respectively.

4. The coupler assembly of claim 1, wherein the upper coupler is provided with a trigger, the trigger is a trigger rod disposed inside the fixed housing, and the trigger rod can extend into the lower coupler to directly or indirectly trigger the microswitch.

5. The coupler assembly according to claim 1 or 4, wherein the lower coupler is provided with a pushing portion which is movable within the housing, a moving stroke of the pushing portion being intersected with a trigger stroke of the micro switch, the pushing portion being pushed by the upper coupler and further triggering the micro switch.

6. The coupler assembly of claim 1, wherein a spacer is further disposed within the housing, the spacer isolating the lower electrode from the microswitch.

7. The coupler assembly of claim 1, wherein the housing is square, the fixing shell is correspondingly square, the outer side of the housing is further provided with a fool-proof rib, and the fixing shell is provided with a fool-proof groove corresponding to the fool-proof rib.

8. The coupler assembly of claim 1, wherein the upper and lower electrodes have a conduction stroke less than the microswitch actuation stroke, such that the coupler assembly is piloted when plugged in to again actuate the microswitch.

9. The coupler assembly of claim 1, wherein the micro-switch comprises a plurality of micro-switches, and the micro-switches are activated simultaneously or separately when the upper coupler is plugged into the lower coupler.

10. A safe food processor comprises a base and a stirring cup arranged on the base, wherein a motor and a control panel are arranged in the base, the stirring cup comprises a cup body and a cup cover arranged at an opening at the upper end of the cup body, a crushing knife is arranged in the cup body, and the crushing knife is in power connection with the motor through a coupling, and the safe food processor is characterized in that the stirring cup is electrically connected with the base through a coupler assembly, the coupler assembly is the coupler assembly of any one of claims 1-9, the stirring cup further comprises a cup seat arranged at the bottom of the cup body, a fixing hole is formed in the periphery of the bottom of the cup seat, an upper coupler is arranged at the position of the fixing hole, a lower coupler can penetrate through the fixing hole and is matched with the upper coupler, and the area of the fixing hole is 20cm²～100cm²。

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