CN217699490U - Food processor and chopping assembly thereof - Google Patents

Abstract

The utility model relates to the technical field of small household appliances, in particular to a food processor and a chopping assembly thereof, wherein the food processor comprises a host machine and a chopping container, the host machine comprises an output shaft for outputting rotary power, and the chopping container comprises a pin joint part; the shredding assembly comprises a cutter shaft for engaging the cutters, and a drive shaft for driving the cutter shaft to rotate; a shaft hole for accommodating the transmission shaft is formed in the cutter shaft; the upper end of the transmission shaft is formed with a coupling part adapted to couple the output shaft to obtain rotational power, the coupling part being configured to be movable between a storage position and a coupling position; in the coupling position, the output shaft can be coupled with the coupling part to transmit the rotary power; in the storage position, the output shaft is separated from the transmission shaft to block the rotary power; the two ends of the cutter shaft are respectively provided with a groove and a first hole, wherein the first hole is suitable for the pivot part to pass through so as to drive the coupling part of the transmission shaft to move to the coupling position, and when the transmission shaft loses the drive of the pivot part, the coupling part freely moves to the separation position; the coupling position is formed in a recess adapted for insertion of an output shaft for coupling the coupling portion in the coupling position.

Description

Food processor and chopping assembly thereof

Technical Field

The utility model relates to a small-size domestic appliance technical field especially relates to a food processor and shredding assembly thereof

Background

With the improvement of the living standard of people, people pay more and more attention to the quality of life, and the meat grinder also becomes a necessity of a plurality of family lives. When the output shaft of the common meat grinder is aligned with the chopping component, the output shaft and the meat grinder are difficult to align when the meat grinder slightly deflects. In addition, the use state that the chopping assembly is placed into the inverted main machine output shaft can occur in the use process of the meat grinder, and if the main machine rotates in the use state, the blades can fly out to hurt people.

Therefore, in order to solve the deficiencies of the prior art, it is urgently needed to develop a novel food processor to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the prior art is not enough to be overcome, and a subassembly that cuts up is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a chopping assembly for a food processor, the food processor comprising a main machine and a chopping container, the main machine comprising an output shaft that outputs rotational power, the chopping container comprising a pivot connection; the shredding assembly comprises a cutter shaft for engaging a cutter, and a drive shaft for driving the cutter shaft to rotate; a shaft hole for accommodating the transmission shaft is formed in the cutter shaft; the upper end of the transmission shaft is formed with a coupling part adapted to couple the output shaft to obtain rotational power, the coupling part being configured to be movable between a storage position and a coupling position; the coupling position is set to be suitable for the output shaft and the coupling part to be coupled so as to transmit the rotary power, and the storage position is set to be suitable for the output shaft and the coupling part to be separated so as to cut off the rotary power; the two ends of the cutter shaft are respectively provided with a groove and a first hole, wherein the first hole is suitable for the pivoting part to pass through so as to drive the coupling part of the transmission shaft to move to the coupling position, and when the transmission shaft loses the driving of the pivoting part, the coupling part can freely move to the separation position; the coupling location is formed within the recess, the recess being adapted for insertion of an output shaft for coupling the drive shaft.

Through adopting above-mentioned technical scheme, the transmission shaft can be portable between its coupling position and separation position, only when correctly installing, the pin joint portion stretches into the shaft hole from first downthehole to the drive transmission shaft is moved the coupling position by the separation position, and is stretched out in by the recess, and output shaft and coupling portion couple in order to transmit power. However, when the shredding assembly is placed upside down on the main body and other shredding assemblies are not installed correctly, the coupling part is in the separated position, the output shaft of the main body is separated from the transmission shaft of the shredding assembly, coupling cannot be performed, the rotary power is cut off, and the transmission shaft cannot rotate, so that the cutter is prevented from rotating to hurt a user, and the safety of the product is improved.

In a further scheme, the transmission shaft is in key connection with the output shaft, and the transmission shaft is in key connection with the cutter shaft so as to transmit rotary power.

Through adopting above-mentioned technical scheme, the key coupling both can realize passing through the transmission shaft with the rotary power of output shaft and transmitting to the subassembly that cuts up, drives the rotation of cutter, can also make between transmission shaft and the output shaft relative slip, also can relative slip between transmission shaft and the arbor. The structure is convenient for the user to operate and improves the safety.

Further, the vertical wall of the groove is obliquely configured to be suitable for guiding the output shaft and the transmission shaft to be coupled. The depth of the groove is greater than the length of the coupling part to prevent the coupling part from protruding from the groove.

In a further aspect, a bias spring is disposed between the transmission shaft and the knife shaft, and the bias spring is configured to apply force to the transmission shaft in a direction that the coupling part leaves the groove.

By adopting the technical scheme, the transmission shaft can not be coupled with the output shaft of the main machine to rotate in the wrong installation state, and the safety of the food processor in the using process is ensured.

In a further aspect, the shredder assembly further comprises a safety cover disposed within the recess and a resisting spring for applying a force to the safety cover, the safety cover being configured to resist the output shaft by the resisting spring to limit the shredder assembly from coupling with the output shaft against its own weight. The safety cover is provided with a second hole for the coupling part to pass through, and the coupling part extends out of the second hole, so that the transmission shaft can be coupled with the output shaft. The resistance spring is a cylindrical spring that forces the safety cap in a direction such that the safety cap approaches the output shaft, the resistance spring imparting a spring force to the safety cap that is no less than the own weight of the chopping assembly.

Through the technical scheme, the safety cover always keeps outward thrust, so that the chopping assembly cannot be stably sleeved with the output shaft of the host machine in an abnormal state. The output end of the transmission shaft can be protected by the safety cover all the time, the cleanness and sanitation of the inner part of the cutter shaft are guaranteed, and the transmission shaft is prevented from being blocked by sundries to influence transmission.

In a further aspect, the upper end has a positioning cover, and the groove is formed in the positioning cover. The safety cover is arranged in the positioning cover. And a guide part for guiding the insertion of the output shaft is formed at the third hole on the positioning cover, and the guide part is an inclined guide surface.

Through adopting above-mentioned technical scheme, cut up the subassembly top and set up the location lid, when the output shaft stretches into the subassembly of cutting up under from last, at first can pass through the guide part of location lid, in the guide output shaft inserts the location lid, the output shaft of being convenient for is connected with the transmission shaft, further realizes coupling transmission between them. When the shredding assembly deflects, the output shaft will guide the shredding assembly under the guiding action of the guide slope of the positioning cover. Because the top ends of the transmission shaft and the output shaft are provided with the chamfers, the coupling length can generate sliding and tooth jumping when the rotary power is transmitted, the rotary power cannot be effectively transmitted, and the pre-alignment effect between the output shaft and the transmission shaft is mainly played. Therefore, when the shredding component is not correctly installed in the shredding container, the output shaft cannot transmit power to the transmission shaft, and safety risks cannot be generated due to misoperation of the shredding component. The safety cover can not influence the action of the transmission shaft within the stroke range, so that the safety cover and the transmission shaft move independently and are easier to install and debug.

In order to overcome the deficiencies of the prior art, the present application further provides a food processor comprising a main body and a chopping container, and further comprising the above-described chopping assembly disposed within the chopping container.

By adopting the technical scheme, the food processor structurally realizes safety and fool-proofing, and the product is safer and more reliable. The output shaft of the food processor is always contained in the chopping assembly, and the output shaft cannot be polluted by splashed minced meat, so that the meat chopper is easier to clean and is not easy to generate peculiar smell. The output shaft is provided with a spline groove matched with the transmission shaft, so that the power of the main machine can be transmitted to the chopping assembly through the output shaft.

In a further aspect, the food processor is a meat grinder or chopper.

To sum up, owing to adopted above technical scheme, the utility model discloses following beneficial effect has:

1. the utility model discloses a shredding assembly owing to set up the recess that has the guard action at the top of arbor, can improve the security of output shaft and transmission shaft when transmitting rotary power. In addition, when the transmission shaft is driven by the pivoting part, the coupling part extends into the groove and moves to a coupling position, and at the moment, the output shaft can be coupled with the transmission shaft to transmit rotary power. When the transmission shaft loses the drive of pin joint portion, coupling portion is in retracting to the shaft hole freely in by the recess, returns to the isolated position for the output shaft can't carry out the coupling with the transmission shaft, just so can guarantee under wrong installation status, the transmission shaft can't rotate with the output shaft coupling of host computer, has guaranteed the security of food processor use, from structural realization prevent slow-witted, safe and reliable more, user experience is better.

2. The utility model discloses further set up the safety cover in the recess to when preventing that the user from wrongly will shredding assembly and adorning on the host computer, under the action of gravity, output shaft and transmission shaft coupling result in the rotatory user that injures of cutter, produce the incident. Specifically, a resistive spring within the shredder assembly biases the safety cap against the output shaft when the user flips the user and the spring force is able to overcome the weight of the shredder assembly such that the output shaft cannot couple with the drive shaft.

3. The utility model discloses a shredding assembly can realize the guide structure's of location lid auxiliary positioning, and the output shaft of being convenient for stretches into the location lid and is connected with the transmission shaft, realizes both coupling transmissions. When the shredding assembly deflects, the output shaft will guide the shredding assembly under the action of the ramp.

4. The utility model discloses a safety protection under the wrong installation state of shredding assembly can be realized to food processor, can also realize food processor's under the correct installation state normal work, not only safe but also reliable.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

Fig. 1 is a schematic cross-sectional view of a shredding assembly according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a first embodiment of the shredding assembly of the present invention in a state where the output shaft is not assembled in place.

FIG. 3 is a schematic view of the assembly of the first embodiment of the shredding assembly of the present invention with the output shaft and the shredding vessel.

Fig. 4 is a schematic sectional view of the food processor according to the present invention.

Fig. 5 is an exploded view of the shredding assembly and the output shaft of the present invention.

Fig. 6 is a schematic cross-sectional view of a second embodiment of the shredding assembly according to the present invention.

Fig. 7 is a schematic view of the second shredding assembly of the present invention in an upside-down state with respect to the main body.

Fig. 8 is a schematic view of a second embodiment of a shredding assembly of the present invention in a flip-chip unassembled state.

Fig. 9 is a schematic view of a shredding assembly according to an embodiment of the present invention in a state of being assembled and unassembled.

Fig. 10 is a schematic view of a second embodiment of the cutting assembly of the present invention in a properly assembled state.

Fig. 11 is an enlarged schematic view of the matching portion between the second embodiment of the shredding assembly and the output shaft according to the present invention.

Fig. 12 is a schematic cross-sectional view of a shredding assembly according to another embodiment of the present invention.

Reference numerals:

1. a host; 2. a cup cover; 3. a shredding container; 4. a shredding assembly; 5. a pivot part; 6. an output shaft; 7. a blade; 8. a safety cover; 9. a positioning cover; 10. a cutter shaft; 11. a top rod; 12. a column sleeve; 13. a biasing spring; 14. a drive shaft; 15. a resistance spring; 16. a groove; 17. a shaft hole; 18. a guide portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item appearing in front of the word "comprising" or "comprises" includes the element or item listed after the word "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships that may change when the absolute position of an object being described changes, and are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The first embodiment is as follows:

referring to fig. 1-3, a chopper assembly 4 for a food processor is shown, the food processor including a main body 1 and a chopper container 3, the main body 1 including an output shaft 6 for outputting rotational power, the chopper container 3 including a pivot joint 5; the chopping assembly 4 comprises an arbor 10 for engaging knives, and a drive shaft 14 for driving the arbor 10 in rotation; a shaft hole 17 for accommodating the transmission shaft 14 is formed in the cutter shaft 10; the upper end of the transmission shaft 14 is formed with a coupling portion adapted to couple the output shaft 6 to take out a rotational power, the coupling portion being configured to be movable between a housing position and a coupling position; in the coupling position, the output shaft 6 can couple the coupling portion to transmit the rotational power; in the storage position, the output shaft is separated from the transmission shaft to block the rotary power; the two ends of the knife shaft 10 are respectively provided with a groove 16 and an opening, wherein the opening is suitable for the pivot part 5 to pass through so as to drive the coupling part of the transmission shaft 14 to move to a coupling position, and when the transmission shaft 14 loses the drive of the pivot part 5, the coupling part freely moves to a separation position; in the present embodiment, after the drive of the pivot joint 5 is lost, the transmission shaft 14 is freely returned to the separated position by the biasing spring 13. In other embodiments, other force imparting members such as magnets may be used to drive the drive shaft 14 back to the disengaged position. The recess 16 is adapted for insertion of the output shaft 6 for coupling with the coupling part in the coupling position. Specifically, in fig. 1 and 2, the coupling portion of the propeller shaft 14 is in the housed position, and in fig. 3, the coupling portion of the propeller shaft 14 is in the coupled position. In the present embodiment, the coupling position refers to a position where the coupling portion of the propeller shaft 14 protrudes into the recess to be able to couple with the output shaft 6.

As shown in fig. 1, the cutter 7 is mounted on the outer periphery of the cutter shaft 10 of the shredding assembly 4, and the cutter 7 is fixed on the periphery of the cutter shaft 10. Specifically, the blade 7 is integrally connected to the arbor 10 by injection molding, and in other embodiments, the blade 7 may be connected to the arbor 10 by other fixing means. The middle part of arbor 10 has the shaft hole 17 that extends on its axis, from supreme post cover 12 of installing down in the shaft hole 17, ejector pin 11 and transmission shaft 14, post cover 12 is fixed on arbor 10 and is located the bottom in shaft hole 17 and breaks away from in order being used for ejector pin 11 and transmission shaft 14 from shaft hole 17, the first hole that supplies pin joint portion 5 to stretch into has on the post cover 12, after pin joint portion 5 passed this first hole, can then promote transmission shaft 14 to move upwards through leaning on ejector pin 11, after its coupling portion stretches into in the recess 16, also be in the coupling position, output shaft 6 can only be with transmission shaft 14 coupling transmission. Specifically, the output shaft 6 is coupled with the coupling part of the transmission shaft 14 extending into the groove 16, and the coupling part of the output shaft 6 and the transmission shaft 14 extending into the groove 16 is shown in fig. 3 for coupling transmission. After the output shaft 6 is coupled with the coupling portion, the starter main body 1 can make the transmission shaft 14 obtain the rotation power.

As further shown in fig. 1, the push rod 11 and the transmission shaft 14 are both located in the shaft hole 17 and can move along the axis of the shaft hole 17, and the push rod 11 is located below the transmission shaft 14. Between the drive shaft 14 and the arbor 10 a biasing spring 13 is arranged, which biasing spring 13 is arranged to force the drive shaft 14 in a direction such that the coupling part leaves the recess 16. That is, when the push rod 11 is not pressed by the pivot joint 5, the transmission shaft 14 is in a free state, and is entirely received in the shaft hole 17 by the biasing spring 13, and the coupling part thereof does not protrude into the recess 16. At this time, even if the output shaft 6 is inserted into the recess 16, it cannot be coupled with the propeller shaft 14 to transmit the rotational power. The pivoting part 5 extends into the column sleeve 12 and presses the top rod 11 to move upwards, so as to push the transmission shaft 14 to move upwards, the transmission shaft 14 presses the biasing spring 13 to be compressed, and after the pivoting part 5 is separated from the column sleeve 12, the transmission shaft 14 moves downwards under the action of the biasing spring 13, so that the coupling part is withdrawn from the groove 16 into the shaft hole 17. The knife shaft 10 has an upper end and a lower end which are oppositely arranged, a groove 16 is formed at the upper end, a column sleeve 12 is fixedly connected at the lower end, and a first hole for the pivot part 5 to pass through is arranged in the column sleeve 12. Specifically, referring to fig. 1, the recess 16 is located at the top end of the arbor 10 and the post sleeve 12 is located at the bottom end of the arbor 10. That is, the upper end is the top end of the cutter shaft 10, and the lower end is the bottom end of the cutter shaft 10. In the present embodiment, since the column jacket 12 is provided at the bottom end, the first hole is provided on the column jacket 12. In another embodiment, the column sleeve 12 may not be provided, and a first hole may be directly provided at the bottom end of the cutter shaft 10, and the pivot joint portion 5 may abut against the top bar 11 after passing through the first hole. In addition, in order to facilitate alignment of the output shaft 6 and the propeller shaft 14 at the time of coupling, a guide portion 18 is formed on the inner wall of the recess 16, the guide portion 18 having a truncated cone shape.

In the present embodiment, the concave groove 16 is directly and integrally formed on the tip end of the arbor 10. In another embodiment, the arbor 10 may be provided in a separate structure, and the arbor 10 may be designed to have a main body and a tip portion fixedly connected to each other, and the recess 16 may be formed in the tip portion. Specifically, the tip portion may be detachably connected (for example, engaged) to the body portion, or may be provided as a non-detachable connection (for example, ultrasonic welding). In the split structure, the transmission shaft 14, the ejector 11, and the biasing spring 13 can be fitted into the shaft hole 17 from above, so that the column sleeve 12 can be eliminated from the lower end portion of the arbor 10.

Referring to fig. 2 and 3, the transmission shaft 14 is formed with an external spline, and the output shaft 6 is formed with an internal spline, which are engaged with each other to transmit rotational power. However, under the condition that the pivot joint 5 does not extend into the shaft hole 17 to press the transmission shaft 14, the transmission shaft 14 is accommodated in the shaft hole 17 by the biasing spring 13, and a sufficient portion does not extend into the recess 16, and at this time, even if the output shaft 6 extends into the recess 16, the output shaft 6 cannot be coupled to the transmission shaft 14, and the transmission of the rotational power cannot be realized. Further, an inner spline that engages with the outer spline of the propeller shaft 14 is formed on the inner wall of the shaft hole 17, and the propeller shaft 14 receives rotational power and then transmits the rotational power to the cutter shaft 10, thereby driving the cutter shaft 10 to rotate. In other embodiments, other connection mechanisms can be used for the coupling between the transmission shaft 14 and the output shaft 16 and the coupling between the transmission shaft 14 and the cutter shaft 10, as long as the two are allowed to slide relatively in the axial direction and can transmit the rotation power in the circumferential direction, for example, a slide block and slide groove structure is used, and a plurality of slide blocks can be arranged on the transmission shaft 14.

It should be noted that, in the present embodiment, the transmission shaft 14 is hexagonal prism shaped and forms an external spline, and correspondingly, the shaft hole 17 is also hexagonal prism shaped and forms an internal spline, and the two are matched to form a spline connection. In yet another embodiment, a plurality of projecting spline teeth may be provided on the drive shaft 14, while spline grooves are provided in the shaft bore 17, which are adapted to form a spline coupling.

Referring to fig. 3, when the shredding assembly 4 is installed in the shredding container 3 in a correct manner, the output shaft 6 is guided by the guide portion 18 to extend into the groove 16, the output shaft 6 presses the cutter shaft 10 downward, the pivot portion 5 on the shredding container pushes the top bar 11 and the transmission shaft 14 to move upward until the coupling portion of the transmission shaft 14 extends into the groove 16 to couple with the output shaft 6, the rotating power of the main body 1 is transmitted to the transmission shaft 14 through the output shaft 6, and the transmission shaft 14 drives the whole shredding assembly 4 to rotate.

In the present embodiment, the push rod 11 is provided below the transmission shaft 14 for the convenience of manufacturing and cost reduction. The push rod 11 is not necessary, and in another embodiment, the push rod 11 may be eliminated, the transmission shaft 14 may be extended, or the pivot portion 5 may be extended to achieve the propping action between the pivot portion 5 and the transmission shaft 14.

The working process and principle of the food processor of the embodiment are as follows: referring to the orientation shown in fig. 3, the shredding assembly 4 is placed into the shredding container 3 with the pivot 5 of the bottom wall of the shredding container 3 extending into the shaft aperture 17 of the arbor 10. Then the output shaft 6 is extended into the groove 16, the machine body 1 is pressed to enable the output shaft 6 to press the cutter shaft 10 from the upper end, after the cutter shaft 10 is pressed by the output shaft 6, the pivot part 5 entering the shaft hole 17 presses the ejector rod 11, the ejector rod 11 presses the transmission shaft 14 to eject the coupling part of the transmission shaft 14 contained in the shaft hole 17, the coupling part of the transmission shaft 14 entering the groove 16 is extended into the groove 16, and the coupling part of the transmission shaft 14 entering the groove 16 is coupled with the output shaft 6 to form a spline structure capable of transmitting rotary power. When the main machine 1 works, the output shaft 6 generates rotary motion, and the output shaft 6 drives the cutter shaft 10 to rotate through the transmission shaft 14, so that minced meat processing of minced meat is realized.

The second embodiment:

referring to fig. 4-12, the food processor is basically the same as the first embodiment in its basic structure, and the food processor also includes a main body 1, a lid 2 cooperating with the main body 1, and a shredding container 3, a shredding assembly 4 is installed in the shredding container 3, one end of the shredding assembly 4 extends into a pivot portion 5 of the bottom wall of the shredding container 3, and the other end is connected to the main body 1.

Referring to fig. 5, the structure of the shredding assembly 4 of the present invention is shown before it is engaged with the output shaft 6. Blades 7 are installed on the periphery of the shredding assembly 4, one end of the output shaft 6 extends into the upper end of the shredding assembly 4, the other end of the output shaft is connected with the main machine 1, and power of the main machine 1 is transmitted to the shredding assembly 4.

Referring to fig. 6-11, a schematic cross-sectional view of a second embodiment of the shredding assembly 4 of the present invention is shown. Blades 7 are mounted on the periphery of the cutter shaft 10 of the shredding assembly 4. A bias spring 13 is arranged between the transmission shaft 14 and the cutter shaft 10, the bias spring 13 gives a force to the transmission shaft 14 in a direction away from the groove 16, so that after the transmission shaft 14 loses the pressing of the pivoting part 5, the coupling part of the transmission shaft retracts into the shaft hole 17 from the groove 16, and the output shaft 6 cannot be coupled with the transmission shaft 14. In this embodiment, a positioning cover 9 is fixedly mounted on the top end of the cutter shaft 10, a third hole through which the output shaft 6 passes is formed on the positioning cover 9, and the output shaft 6 passes through the third hole and then is coupled with the coupling portion of the transmission shaft 14. The groove 16 is formed in the positioning cover 9, and the positioning cover 9 can be fixedly connected with the cutter shaft 10 through ultrasonic waves or threads or gluing. A safety cover 8 is arranged in the groove 16, a resisting spring 15 is arranged between the safety cover 8 and the cutter shaft 10, a resisting spring 15 can also be arranged between the safety cover 8 and the positioning cover 9, the resisting spring 15 endows the safety cover 8 with the acting force resisting the output shaft 6, namely the safety cover 8 is forced to the direction of enabling the safety cover 8 to approach the output shaft 6, so that the safety cover 8 can resist the output shaft 6 by means of the resisting spring 15 to limit the chopping assembly to be coupled with the output shaft 6 by means of the self gravity. That is, when a user tries to assemble the shredder assembly with the main body 1 by mistake in a state where the main body 1 is upside down, the safety cap 8 can overcome the self-weight of the shredder assembly against the spring 15 so that the output shaft 6 cannot be coupled to the transmission, and when the shredder assembly is placed on the main body 1, the safety cap 8 can be flicked to disable the assembly. The safety cover 8 has a second hole in the middle through which the drive shaft 14 passes, through which the drive shaft 14 projects in the correct assembly for coupling with the output shaft 6. In the present embodiment, a spline structure engaged with the drive shaft 14 is provided in the second hole such that the safety cap 8 and the drive shaft 14 are spline-coupled, and an outer wall of the safety cap 8 is spline-coupled with the cutter shaft 10 to transmit rotational power. In another embodiment, it is also possible that the second hole only provides a space for the coupling portion of the drive shaft 14 to protrude, and the rotational power is transmitted between the drive shaft 14 and the arbor 10 directly through the spline structural coupling.

Specifically, as shown in fig. 11, the resisting spring 15 is a cylindrical spring, the upper end of which abuts against the lower side surface of the upper edge of the safety cover 8, and the lower end of which is sleeved on the top end of the cutter shaft 10 and abuts against a step surface provided on the top end of the cutter shaft, so that the resisting spring 15 is given an acting force resisting the coupling of the output shaft 6 and the transmission shaft 14.

Please refer to fig. 7, which is a schematic diagram illustrating a connection state between the shredding assembly 4 and the inverted main body 1. This condition is an abnormal installation condition, and conventional food processors do not have safety protection, and use in this condition would cause the shredding assembly 4 to rotate at a high speed, and the blades 7 would cause safety accidents such as injury.

Referring to fig. 8, even if the output shaft 6 can extend into the groove 16 of the positioning cover 9 and push the safety cover 8 to slide along the axis of the shaft hole 17 away from the groove 16 in the wrong upside-down-mounting state, the transmission shaft 14 abuts against the rod 11 under the elastic force of the biasing spring 13 to be located at a position away from the groove 16, i.e. the storage position, the coupling portion of the transmission shaft 14 does not extend out of the safety cover 8, or the portion extending out of the safety cover 8 is short, so that the output shaft 6 and the transmission shaft 14 cannot be coupled to achieve the rotational connection, and therefore the shredding assembly 4 cannot rotate.

Referring to FIG. 9, the shredding assembly 4 of this embodiment is shown in cross-section in an unset condition within the shredding container 3. At this time, although the pivot joint 5 is extended into the shaft hole 17, the pivot joint 5 does not push the transmission shaft 14 to slide upwards through the push rod 11, and the upper end of the transmission shaft 14 is not protruded enough from the upper end surface of the safety cover 8 to be coupled with the output shaft 6, so that the rotation connection cannot be realized, and the rotation of the shredding assembly 4 cannot be realized.

Please refer to fig. 10, which is a schematic diagram illustrating a cross-sectional structure of a food processor according to an embodiment of the present invention. In this state, the pivoting portion 5 extends into the shaft hole 17 and pushes the transmission shaft 14 to approach the groove 16 through the top rod 11, please refer to fig. 11. At this time, the output shaft 6 extends into the groove 16 of the positioning cover 9 and presses the safety cover 8 to be connected with the transmission shaft 14, and the output shaft 6 can transmit the power of the main machine 1 to the cutter shaft 10 through the transmission shaft 14, so that the rotation of the chopping assembly 4 is realized. When the output shaft 6 is pulled out from the groove 16, the safety cover 8 is restored to the top end of the groove 16 against the action of the spring 15 and is connected in abutment with the rim portion of the positioning cover 9. Meanwhile, the transmission shaft 14 retracts from the groove 16 into the shaft hole 17 under the elastic force of the biasing spring 13, and the push rod 11 pushes the pivot joint 5 to make the pivot joint 5 completely disengage from the shaft hole 17, or partially remain in the shaft hole 17.

Please refer to fig. 12, which shows a schematic cross-sectional view of the transmission shaft 14, the safety cover 8 and the cutter shaft 10 of the present invention. The transmission shaft 14 penetrates through the spline groove of the safety cover 8, the safety cover 8 penetrates through the spline groove of the cutter shaft 10, and the transmission of the rotary power and the axial movement can be realized through a spline structure.

The working process and principle of the food processor of the embodiment are as follows: referring to the orientation shown in fig. 4, the shredding assembly 4 is placed into the shredding container 3 with the pivot 5 of the bottom wall of the shredding container 3 properly extending into the axial bore 17 of the arbor 10. The main body 1 fitted with the output shaft 6 is correctly snapped onto the shredding container 3, the output shaft 6 protruding through the recess 16 into the interior of the shredding assembly 4 and pushing the safety cover 8 to slide downwards. Under the pressure action of the main machine 1, the pivoting part 5 pushes the transmission shaft 14 upwards through the ejector rod 11 to extend into the spline groove of the output shaft 6 to realize rotary connection. The main machine 1 works to drive the output shaft 6 to rotate, and the output shaft 6 drives the chopping assembly 4 to rotate through the transmission shaft 14, so that minced meat processing is realized.

[ other embodiments ]

The transmission shaft 14 and the ejector rod 11 can be combined into a whole, and the transmission shaft 14 is directly abutted with the column sleeve 12 after being lengthened. The biasing spring 13 and the resisting spring 15 may be replaced by other elastic restoring components, such as elastic pieces, and may also be replaced by elements such as magnets.

It should also be noted that the food processor of the present invention can be used in various food processing devices that process food by crushing or chopping, such as a slicer, a chopper, a dry mill, etc.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (14)

1. A chopping assembly for a food processor, the food processor comprising a main machine and a chopping container, the main machine comprising an output shaft that outputs rotational power, the chopping container comprising a pivot connection; the shredding assembly comprises a cutter shaft for engaging a cutter, and a drive shaft for driving the cutter shaft to rotate; a shaft hole for accommodating the transmission shaft is formed in the cutter shaft; the method is characterized in that:

the upper end of the transmission shaft is formed with a coupling part adapted to couple the output shaft to obtain rotational power, the coupling part being configured to be movable between a storage position and a coupling position; the coupling position is set to be suitable for the output shaft and the coupling part to be coupled so as to transmit the rotary power, and the receiving position is set to be suitable for the output shaft and the coupling part to be separated so as to cut off the rotary power;

the two ends of the cutter shaft are respectively provided with a groove and a first hole, wherein the first hole is suitable for the pivoting part to pass through so as to drive the coupling part of the transmission shaft to move to the coupling position, and when the transmission shaft loses the drive of the pivoting part, the coupling part can move to the separation position;

the coupling location is formed within the recess, the recess being adapted for insertion of an output shaft for coupling the drive shaft.

2. The chopper assembly of claim 1, wherein the coupling portion extends into a recess in the coupled position and is received within a shaft bore in the received position.

3. A shredder assembly according to claim 1, wherein the drive shaft is keyed to the output shaft and the drive shaft is keyed to the cutter shaft for transmitting rotary power.

4. A shredder assembly according to claim 1, wherein the upstanding walls of the slot are angularly disposed so as to be adapted to guide the output shaft and drive shaft coupling.

5. A shredder assembly according to claim 1, wherein the depth of the groove is greater than the length of the coupling.

6. A chopping assembly according to claim 1, wherein a biasing spring is arranged between the drive shaft and the knife shaft, the biasing spring being arranged to force the drive shaft in a direction towards the coupling portion leaving the recess.

7. A chopping assembly according to any one of claims 1 to 6, further comprising a safety cap disposed within the recess and a resistance spring exerting force on the safety cap, the safety cap being arranged to resist the output shaft by means of the resistance spring to restrict the coupling of the chopping assembly with the output shaft against its own weight.

8. A shredder assembly according to claim 7, wherein the safety cover has a second aperture formed therein through which the coupling portion extends.

9. A shredder assembly according to claim 7, wherein the resistance spring is a cylindrical spring which biases the safety cover in a direction towards causing the safety cover to approach the output shaft.

10. A shredder assembly according to claim 7, wherein the cutter shaft has a locating cap thereon, the recess being formed in the locating cap.

11. A shredder assembly according to claim 10, wherein the safety cover is disposed within the retaining cap.

12. A shredder assembly as claimed in claim 10, wherein the top of the positioning cap is formed with a third aperture through which the output shaft passes, the third aperture being formed with a guide portion for guiding the insertion of the output shaft.

13. A food processor comprising a main body and a chopping container, further comprising a chopping assembly as claimed in any one of claims 1 to 12, the chopping assembly being disposed within the chopping container.

14. The food processor of claim 13, wherein the food processor is a meat grinder or a chopper.

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