Rotary cutter set and food processor

Abstract

The utility model relates to a rotary knife tackle and a food processor. The rotary knife tackle comprises a rotary shaft, the shaft sleeve is sleeved on the rotating shaft; wherein one of the rotating shaft and the shaft sleeve is circumferentially provided with a first track which fluctuates along the axial direction of the rotating shaft, and the other one of the rotating shaft and the shaft sleeve is provided with a first convex part which is matched with the first track; one of the shaft sleeve and the rotating shaft is circumferentially provided with a second track which fluctuates along the axial direction of the rotating shaft, and the other one is provided with a second convex part matched with the second track; when the rotating shaft rotates, the first protruding part slides along the first track, the second protruding part slides along the second track, the shaft sleeve is promoted to rotate around the rotating shaft, and meanwhile the shaft sleeve moves back and forth in the axial direction of the rotating shaft. According to the utility model, the stirring piece on the shaft sleeve is driven to do reciprocating motion along the rotating shaft through the matching between the fluctuating track and the convex part, so that the chopping and stirring range of the rotating cutter group is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of food processors, in particular to a rotary knife set and a food processor. Background Art

[0002] A food processor is a kitchen appliance used for chopping, blending, whipping and mixing ingredients. It is one of the common tools in the kitchen that can help save time and labor in preparing ingredients.

[0003] The ingredients are placed in the food processor's container and chopped and stirred by the food processor's rotating knife group. However, the position of the blades on the rotating knife group relative to the shaft is fixed, and the blades can only rotate around a fixed plane. The effective working area is small, and the stirring and mixing effect on the ingredients is also poor. The ingredients are rotated by the knife, and rely on the ingredients to actively enter the rotating cutting range of the blades after being stirred. The stirring efficiency is low, and the chopping efficiency of the ingredients is also affected. In addition, the position of the blades relative to the shaft is fixed, causing some ingredients to accumulate in dead corners that the rotating knife group cannot reach, making them difficult to stir and cut. The chopping and stirring effect and efficiency are poor.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a rotating knife group and a food processor to improve the quality and efficiency of mixing and chopping of the food processor.

[0006] The technical solution of the utility model is as follows:

[0007] A rotating knife assembly comprises: a rotating shaft; a sleeve sleeved on the rotating shaft; an agitator respectively arranged on the rotating shaft and the sleeve, the agitator being a blade or a stirring rod; wherein one of the rotating shaft and the sleeve is circumferentially provided with a first track undulating along the axial direction of the rotating shaft, and the other is provided with a first convex portion matching the first track; one of the sleeve and the rotating shaft is circumferentially provided with a second track undulating along the axial direction of the rotating shaft, and the other is provided with a second convex portion matching the second track; when the rotating shaft rotates, the first convex portion slides along the first track, and the second convex portion slides along the second track, causing the sleeve to rotate around the rotating shaft, and the sleeve reciprocates along the axial direction of the rotating shaft.

[0008] A further technical solution is that both the first track and the second track include two wave crests and two wave troughs, and the wave crests and the wave troughs are arranged alternately.

[0009] A further technical solution is that the first track and the second track are arranged in parallel, the top heights of different wave crests on the first track are different, and the bottom depths of different wave troughs on the first track are different.

[0010] A further technical solution is that when the second protrusion is arranged on the rotating shaft, a sliding groove is provided on the inner side of the sleeve along the axial direction of the rotating shaft for the second protrusion to pass through.

[0011] A further technical solution is that two first protrusions are symmetrically arranged relative to the axis of the rotating shaft; and two second protrusions are symmetrically arranged relative to the axis of the rotating shaft.

[0012] A further technical solution is that the rotating shaft includes a first shaft segment and a second shaft segment, the diameter of the first shaft segment is smaller than the diameter of the second shaft segment, and there is an arc transition between the first shaft segment and the second shaft segment; the shaft sleeve is sleeved on the second shaft segment.

[0013] A further technical solution is that a first extension portion is arranged along the axial direction of the sleeve at one end of the sleeve close to the first track; when the first protrusion is arranged on the sleeve, the first protrusion is arranged on the inner side of the first extension portion; when the first track is arranged on the sleeve, the first track is arranged on the inner side of the first extension portion.

[0014] A further technical solution is that a second extension portion is arranged along the axial direction of the sleeve at one end of the sleeve away from the first track; when the second protrusion is arranged on the sleeve, the second protrusion is arranged on the inner side of the second extension portion; when the second track is arranged on the sleeve, the second track is arranged on the inner side of the second extension portion.

[0015] A further technical solution is that the stirring member is a blade or a stirring rod.

[0016] A food processor comprises a main machine, a container and a rotating knife group, wherein the rotating knife group extends into the container and is connected to the main machine.

[0017] The beneficial technical effects of the utility model are as follows:

[0018] (1) The rotating knife group in the utility model is provided with a rotating shaft, and a sleeve is sleeved on the rotating shaft, and a first track and a first convex portion, as well as a second track and a second convex portion are provided between the rotating shaft and the sleeve. When the rotating shaft rotates, the torque transmitted between the undulating track and the convex portion is used to drive the rotating shaft and the sleeve to rotate relative to each other. During the relative rotation process, the convex portion slides along the undulating track surface to realize the axial movement of the sleeve along the rotating shaft, and under the joint action of the first track and the second track, the sleeve is driven to reciprocate along the rotating shaft. While the sleeve reciprocates, it drives the agitator fixed on the sleeve to reciprocate, allowing the rotating knife group to chop and stir in a larger range. The agitator reciprocates and stirs at the same time, thereby improving the effect and efficiency of stirring, thereby improving the effect and efficiency of chopping and stirring.

[0019] (2) Furthermore, the diameter of one end of the rotating shaft is reduced and transitioned through an arc, which makes it easier to sleeve the shaft sleeve on the rotating shaft and simplifies assembly.

[0020] (3) Furthermore, the shaft sleeve is provided with a first extension portion, and the first protrusion is provided inside the first extension portion. When the first protrusion cooperates with the first track, the outside of the first track will be restricted by the inside of the first extension portion, thereby restricting the radial runout between the shaft sleeve and the rotating shaft when the shaft sleeve rotates relative to the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure schematic diagram of the rotating knife group in the first embodiment of the utility model is shown.

[0022] Figure 2 The figure shows a three-dimensional structural schematic diagram of the knife attachment assembly in the first embodiment of the utility model when viewed from above.

[0023] Figure 3 The three-dimensional structure diagram of the rotary knife group in the third embodiment of the present utility model is shown.

[0024] Figure 4 A cross-sectional structural schematic diagram of a food processor in a fourth embodiment of the present invention is shown.

[0025] Markings in the accompanying drawings:

[0026] 1. Rotating shaft; 11. First track; 111. Wave crest; 112. Wave trough; 12. Second convex portion; 13. Circular arc; 14. First shaft section; 15. Second shaft section; 2. Bushing; 21. Second track; 22. Slide groove; 23. First convex portion; 24. First extension portion; 25. Second extension portion; 3. Agitator; 4. Main unit; 5. Container. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0028] In the description of the present invention, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] When the track surfaces of the first track 11 and the second track 21 in the present invention face upward, the portion protruding upward is the wave crest 111, and the portion sunken downward is the wave trough 112; when the track surfaces of the first track 11 and the second track 21 in the present invention face downward, the portion sunken upward is the wave crest 111, and the portion protruding downward is the wave trough 112.

[0030] Embodiment 1

[0031] Figure 1 The three-dimensional structure schematic diagram of the rotating knife group in the first embodiment of the utility model is shown. Figure 2 The figure shows a three-dimensional structural diagram of the knife attachment assembly in the first embodiment of the present utility model when viewed from above. Figure 1 and Figure 2 A rotary knife assembly includes a rotating shaft 1 and a sleeve 2, wherein the sleeve 2 is sleeved on the rotating shaft 1. A first track 11 is circumferentially arranged on the rotating shaft 1 and undulates along the axial direction of the rotating shaft 1, and the track surface of the first track 11 is arranged upward. A first protrusion 23 matching the first track 11 is arranged on the sleeve 2. When the first protrusion 23 slides along the undulating track surface of the first track 11, the sleeve 2 moves up and down along the axial direction of the rotating shaft 1.

[0032] In addition, a second track 21 is circumferentially arranged on the shaft sleeve 2 and undulates along the axial direction of the rotating shaft 1, and the track surface of the second track 21 is arranged upward. A second protrusion 12 is arranged on the rotating shaft 1 to match the second track 21. When the second protrusion 12 slides along the undulating track surface of the second track 21, the shaft sleeve 2 will move up and down along the axial direction of the rotating shaft 1. The shaft sleeve 2 is driven to reciprocate up and down along the rotating shaft 1 by utilizing the cooperation between the first track 11 and the first protrusion 23, and the cooperation between the second track 21 and the second protrusion 12. During the reciprocating movement of the shaft sleeve 2, the agitator 3 fixed on the shaft sleeve 2 is driven to rotate around the rotating shaft 1 and reciprocate up and down along the rotating shaft 1, stirring and shredding the food, thereby improving the effect and efficiency of shredding and stirring.

[0033] The specific structures of the first track 11 and the second track 21 are described below:

[0034] Please refer to Figure 1 and Figure 2 The undulating first track 11 and the second track 21 both include two crests 111 and two troughs 112, and the crests 111 and the troughs 112 are arranged alternately. When the first protrusion 23 slides one circle along the first track 11, the sleeve 2 will reciprocate twice along the axial direction of the rotating shaft 1. When the second protrusion 12 slides one circle along the second track 21, the sleeve 2 will reciprocate twice along the axial direction of the rotating shaft 1. A reciprocating stroke includes: the first protrusion 23 on the sleeve 2 contacts the trough 112 of the first track 11, and the sleeve 2 moves upward until the second protrusion 12 contacts the trough 112 of the second track 21; then the sleeve 2 moves downward until the first protrusion 23 contacts the trough 112 of the first track 11. The number of reciprocating motions of the sleeve 2 is limited to two times to avoid the reciprocating motion frequency of the sleeve 2 being too high, which affects the stability during operation.

[0035] Please refer to Figure 1 and Figure 2 , the first track 11 and the second track 21 are parallel to each other, the top heights of different wave crests 111 on the first track 11 are different, and the bottom depths of different wave troughs 112 on the first track 11 are also different. Correspondingly, the top heights of different wave crests 111 on the second track 21 are different, and the bottom depths of different wave troughs 112 on the second track 21 are also different. This is to change the stroke of two adjacent reciprocating movements when the sleeve 2 reciprocates along the rotating shaft 1. The up and down movement of the agitator 3 fixed on the sleeve 2 is made more irregular, so as to better perform stirring and chopping. Note that when the top heights of the wave crests 111 on the same track are different, and the bottom depths of the wave troughs 112 on the same track are different, only one first protrusion 23 and one second protrusion 12 are respectively provided.

[0036] The specific structure of the rotating shaft 1 and the sleeve 2 is described below:

[0037] Please refer to Figure 1and Figure 2 , both the rotating shaft 1 and the sleeve 2 are provided with a stirring member 3, and the stirring member 3 is a blade or a stirring rod to better cut or stir the food. Among them, only one stirring member 3 can be provided on a sleeve 2 or a rotating shaft 1, or multiple stirring members 3 can be provided at the same time. When multiple stirring members 3 are provided on a sleeve 2 or a rotating shaft 1, the heights of the stirring members 3 can be different. The stirring members 3 can be evenly arranged around the axis of the rotating shaft 1, or they can be unevenly arranged. The stirring member 3 and the axis of the rotating shaft 1 can be arranged perpendicular to each other, so that the stirring member 3 is perpendicular to the axis of the rotating shaft 1. The stirring member 3 can also be arranged on the rotating shaft 1 to tilt upward or downward, so that the stirring member 3 and the axis of the rotating shaft 1 form an acute angle or an obtuse angle.

[0038] Please refer to Figure 1 and Figure 2 , a slide groove 22 is provided on the inner side of the sleeve 2 along the axial direction of the rotating shaft 1 for the second protrusion 12 to pass through, so as to facilitate the assembly of the sleeve 2 on the rotating shaft 1. Two first protrusions 23 are symmetrically arranged relative to the axis of the rotating shaft 1, and the heights of the two first protrusions 23 are consistent. Two second protrusions 12 are symmetrically arranged relative to the axis of the rotating shaft 1, and the heights of the two second protrusions 12 are consistent, so as to evenly transmit the torque and thrust between the rotating shaft 1 and the sleeve 2. The rotating shaft 1 includes a first shaft section 14 and a second shaft section 15. The diameter of the first shaft section 14 is smaller than the diameter of the second shaft section 15. The arc 13 transitions between the first shaft section 14 and the second shaft section 15, so as to facilitate the sleeve 2 to be sleeved on the second shaft section 15 of the rotating shaft 1. A spline (not marked in the figure) is provided on the first shaft section 14, and the main machine 4 is connected to the rotating shaft 1 through the spline.

[0039] Please refer to Figure 1 and Figure 2 , a first extension portion 24 is provided along the axial direction of the sleeve 2 at one end of the sleeve 2 close to the first track 11. The first protrusion 23 is provided on the inner side of the first extension portion 24. When the first protrusion 23 cooperates with the first track 11, the inner side of the first extension portion 24 will contact the outer side of the first track 11, thereby limiting the radial runout between the sleeve 2 and the rotating shaft 1 when the sleeve 2 rotates relative to the rotating shaft 1, and improving the stability of the sleeve 2 and the rotating shaft 1 during rotation. A second extension portion 25 is provided along the axial direction of the sleeve 2 at one end of the sleeve 2 away from the first track 11. The second track 21 is provided on the inner side of the second extension portion 25. When the second protrusion 12 cooperates with the second track 21, the end of the second protrusion 12 will be close to the inner side of the second extension portion 25, thereby limiting the circumferential runout between the sleeve 2 and the rotating shaft 1 when the sleeve 2 rotates relative to the rotating shaft 1, and improving the stability of the sleeve 2 and the rotating shaft 1 during rotation.

[0040] The specific workflow of this embodiment is as follows:

[0041] When the rotating knife group is stationary, under the action of gravity, the first protrusion 23 fits the bottom of the trough 112 of the first track 11. When the shaft 1 rotates, under the action of friction, the first track 11 transmits torque to the fitted first protrusion 23. Under the action of this torque, the sleeve 2 rotates around the shaft 1. Affected by the resistance, the rotation speed of the sleeve 2 is lower than that of the shaft 1, and the first protrusion 23 will slide along the undulating track surface of the first track 11, driving the sleeve 2 to move along the shaft 1. When the first protrusion 23 slides along the first track 11 to the top of the wave crest 111 of the first track 11, under the influence of inertia, the sleeve 2 and the first protrusion 23 continue to move upward along the shaft 1 until the second protrusion 12 contacts the second track 21. Then the second protrusion 12 slides along the undulating track surface of the second track 21, driving the sleeve 2 to move along the shaft 1. When the second protrusion 12 slides along the second track 21 to the bottom of the trough 112 of the second track 21, the sleeve 2 and the second protrusion 12 continue to move downward along the shaft 1 due to inertia and gravity until the first protrusion 23 contacts the first track 11. Then the first protrusion 23 slides along the undulating track surface of the first track 11, driving the sleeve 2 to move along the shaft 1. The shaft 1 continues to rotate, and the sleeve 2 repeats the above-mentioned upward and downward movements, and moves back and forth up and down on the shaft 1.

[0042] Embodiment 2

[0043] Based on the first embodiment, the second embodiment discloses a rotary knife assembly, wherein when the first protrusion 23 thereof slides to the bottom of the trough 112 of the first track 11 , the second protrusion 12 thereof just slides to the top of the crest 111 of the second track 21 .

[0044] That is, when the shaft 1 rotates, the first protrusion 23 slides along the trough 112 of the first track 11 to the crest 111 of the first track 11, and the second protrusion 12 slides along the crest 111 of the second track 21 to the trough 112 of the second track 21. No matter where the sleeve 2 rotates around the shaft 1, the first protrusion 23 and the second protrusion 12 always contact the first track 11 and the second track 21 respectively, and the upper and lower parts of the sleeve 2 begin to receive the torque and thrust transmitted by the first track 11 and the second track 21, thereby enhancing the stability of the shaft 1 during rotation.

[0045] Embodiment 3

[0046] Figure 3 The three-dimensional structure diagram of the rotary knife group in the third embodiment of the present utility model is shown. Figure 3 Based on the second embodiment, the third embodiment discloses a rotary knife assembly, wherein the second track 21 is arranged on the rotating shaft 1, and the track surface of the second track 21 is arranged downward. Correspondingly, the second protrusion 12 is arranged on the sleeve 2 to match the second track 21 on the rotating shaft 1.

[0047] As in the second embodiment, when the rotating shaft 1 is rotated, the first protrusion 23 at the bottom of the trough 112 first slides along the track surface of the first track 11 toward the crest 111 of the first track 11. During this process, the sleeve 2 moves upward along the rotating shaft 1. The difference between this embodiment and the first embodiment is that the sleeve 2 moves upward along the rotating shaft 1 until the second protrusion 12 abuts against the top of the crest 111 of the second track 21. At this time, the first protrusion 23 just moves to the top of the crest 111 of the first track 11. Then the second protrusion 12 slides along the crest 111 of the second track 21 toward the trough 112 of the second track 21. During this process, the sleeve 2 moves downward along the rotating shaft 1 until the first protrusion 23 abuts against the bottom of the trough 112 of the first track 11. At this time, the second protrusion 12 just moves to the bottom of the trough 112 of the second track 21.

[0048] Embodiment 4

[0049] Figure 4 The cross-sectional structure diagram of the food processor in the fourth embodiment of the present invention is shown. Figure 4 Based on the first, second and third embodiments, the fourth embodiment discloses a food processor, including a main unit 4, a container 5 and a rotating knife group, wherein the rotating knife group extends into the container 5 and is connected to the main unit 4. A spline is provided on the first shaft section 14 of the rotating shaft 1 of the rotating knife group. A motor and a coupler (not marked in the figure) are provided in the main unit 4, and the coupler is connected to the spline on the first shaft section 14. The torque output by the motor is stable and reliable, with a fast response speed. It is driven by electricity and is suitable for home use. The lower end of the rotating shaft 1 is rotatably connected to the lower end inside the container 5, thereby enhancing the stability of the rotating shaft 1 during rotation. When the rotating knife group is driven to rotate in the container 5 by the main unit 4, the agitator 3 in the rotating knife group will reciprocate up and down along the rotating shaft 1, thereby improving the efficiency and quality of food chopping and stirring.

[0050] It can be seen that the above-mentioned rotary knife set, while the stirring member 3 fixed on the shaft sleeve 2 rotates, reciprocates up and down along the circumference of the rotating shaft 1, thereby improving the effect and efficiency of chopping and stirring. The above-mentioned food processor is equipped with the rotary knife set of the utility model, and the efficiency and quality of chopping and stirring ingredients are significantly improved.

[0051] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A rotary knife set, characterized in that: include: Rotating shaft; A shaft sleeve, sleeved on the rotating shaft; A stirring member, respectively arranged on the rotating shaft and the shaft sleeve; Among them, one of the rotating shaft and the sleeve is circumferentially provided with a first track that undulates along the axial direction of the rotating shaft, and the other is provided with a first convex portion that matches the first track; one of the sleeve and the rotating shaft is circumferentially provided with a second track that undulates along the axial direction of the rotating shaft, and the other is provided with a second convex portion that matches the second track; when the rotating shaft rotates, the first convex portion slides along the first track, and the second convex portion slides along the second track, causing the sleeve to rotate around the rotating shaft, and at the same time the sleeve reciprocates along the axial direction of the rotating shaft.

2. The rotary knife assembly according to claim 1, characterized in that: The first track and the second track both include two crests and two troughs, and the crests and the troughs are alternately arranged.

3. The rotary knife assembly according to claim 2, characterized in that: The first track and the second track are parallel to each other, different crests on the first track have different top heights, and different troughs on the first track have different bottom depths.

4. The rotary knife assembly according to claim 1, characterized in that: When the second protrusion is arranged on the rotating shaft, a sliding groove is provided on the inner side of the sleeve along the axial direction of the rotating shaft for the second protrusion to pass through.

5. The rotary knife assembly according to claim 1, characterized in that: Two first protrusions are symmetrically arranged relative to the axis of the rotating shaft; and two second protrusions are symmetrically arranged relative to the axis of the rotating shaft.

6. The rotary knife assembly according to claim 1, characterized in that: The rotating shaft comprises a first shaft section and a second shaft section, the diameter of the first shaft section is smaller than the diameter of the second shaft section, and there is an arc transition between the first shaft section and the second shaft section; the shaft sleeve is sleeved on the second shaft section.

7. The rotary knife assembly according to claim 1, characterized in that: A first extension portion is arranged at one end of the sleeve close to the first track along the axial direction of the sleeve; when the first protrusion is arranged on the sleeve, the first protrusion is arranged on the inner side of the first extension portion; when the first track is arranged on the sleeve, the first track is arranged on the inner side of the first extension portion.

8. The rotary knife assembly according to claim 1, wherein: A second extension portion is arranged at one end of the sleeve away from the first track along the axial direction of the sleeve; when the second protrusion is arranged on the sleeve, the second protrusion is arranged on the inner side of the second extension portion; when the second track is arranged on the sleeve, the second track is arranged on the inner side of the second extension portion.

9. The rotary knife assembly according to claim 1, characterized in that: The stirring member is a blade or a stirring rod.

10. A food processor, characterized in that: It comprises a host, a container and a rotating knife group as claimed in any one of claims 1 to 9, wherein the rotating knife group extends into the container and is connected to the host.

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