CN218598736U

CN218598736U - Speed reducing mechanism for food processor

Info

Publication number: CN218598736U
Application number: CN202222889908.5U
Authority: CN
Inventors: 王旭宁; 尚珅; 任听听
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-10
Anticipated expiration: 2032-10-28

Abstract

The utility model relates to a kitchen electric appliance technical field, concretely relates to a reduction gears for food preparation machine, including deciding the ring gear, the pair tooth, move ring gear and planet carrier, the pair tooth includes first gear, second gear and gear shaft, one of them and deciding the ring gear meshing of first gear and second gear, another one of them with move the ring gear meshing, first gear and second gear components of a whole that can function independently set up, the protruding metal mounting who is equipped with the hole of nested to first gear of second gear, the inside cavity of metal mounting forms the shaft hole, the gear shaft runs through in the shaft hole. The first gear and the second gear are arranged in a split manner, so that the problem that the dual gear is difficult to process due to integral forming can be solved, the processing efficiency is improved, and the cost is reduced; through the metal fixing piece, the location between first gear and the second gear of being convenient for can improve shaft hole intensity through the metal material of metal fixing piece self to can improve the holistic intensity of pair tooth, to a great extent prevents to take place the wearing and tearing of gear under the great operating mode of moment of torsion.

Description

Speed reducing mechanism for food processor

Technical Field

The utility model relates to a kitchen electric appliance technical field, concretely relates to a reduction gears for food preparation machine.

Background

At present, most of food processing machines on the market have a stirring system, can crush food materials through stirring or crushing, the stirring system generally comprises a stirring cup and a stirring rod, the stirring cup cover covers the upper opening part of the stirring, and a host machine is assembled above the stirring cup cover. When the product works, the motor drives the stirring rod to rotate through speed reduction of the reduction gearbox, so that the food materials in the stirring cup are stirred. In order to meet the requirements of different rotating speeds, a double-linkage-tooth structure is usually adopted in a speed reducing mechanism, and the double-linkage-tooth structure is in meshing transmission with a fixed gear ring and a movable gear ring, so that the output of two different rotating speeds is realized, the work of crushing food materials and the like can be performed at a high speed, and the work of kneading dough and stirring and the like can be performed at a low speed. However, in the case of a large torque, if the dual-linkage structure is made of a plastic material, the dual-linkage structure is prone to tilt, and the outer tooth surface is worn and the inner hole is crushed, so that the food processor is prone to failure during use. However, if the gear made of metal material is adopted, the conventional double-tooth gear has the defects of difficult pressing of powder metallurgy forming density, high forming process requirement, insufficient crimping force and difficult achievement of process requirement, and the double-tooth has a complex structure, so that the production cost is increased.

Thus, the prior art is subject to further improvements and enhancements.

Disclosure of Invention

An object of the utility model is to provide a reducing mechanism for food preparation machine for solve the inside easy reaming of food preparation machine reducing mechanism's pair tooth, the outside is worn and torn easily, and processing difficulty, problem that the processing cost is high.

In order to realize the above-mentioned purpose, the utility model provides a reduction gears for food preparation machine, decide the ring gear including mutually supporting, the pair tooth, move ring gear and planet carrier, the pair tooth includes first gear, second gear and gear shaft, first gear and second gear one of them and decide the ring gear meshing, another in the two with move the ring gear meshing, first gear and second gear components of a whole that can function independently set up, the protruding metal mounting who is equipped with in the hole of nested to first gear of second gear, metal mounting's inside cavity forms the shaft hole, the gear shaft runs through in the shaft hole.

According to the forming method and device, the double gears are arranged to comprise the first gear and the second gear, and the first gear and the second gear are arranged in a split mode, so that the problems that the double gears are difficult to press and form in an integrated forming mode and high in forming process requirement under the condition of metal materials can be solved to a great extent, the machining efficiency can be improved, and the machining cost can be reduced; and, this application is provided with the metal mounting of the hole of nested to first gear through the second gear, can be convenient for mutual location between first gear and the second gear, and can pass through the metal material of metal mounting self, make the intensity in shaft hole promote, solve the problem of reaming, can prevent to a great extent that the gear from taking place the slope between the gear, can avoid direct contact between gear shaft and the shaft hole wall, can improve the axiality of first gear and second gear, and can improve the holistic intensity of pair tooth to a certain extent, to a great extent prevents to take place the wearing and tearing of gear lateral surface under the great operating mode of moment of torsion, ensure the stability of meshing.

Preferably, the metal fixing piece is provided with a rotation stopping structure matched with an inner hole of the first gear.

This application is provided with through the metal mounting and splines the structure to cooperate with the hole of first gear, can play the effect of splines and transmission moment of torsion, make between first gear and the second gear can synchronous motion, prevent relative motion between the two, can make the double gear more stable in the course of the work.

Preferably, the rotation stopping structure includes a plurality of protrusions protruding radially outward from the metal fixing member and grooves formed between adjacent protrusions.

This application is through setting up to form the recess between outside convex arch and the adjacent arch to play spacing effect of splining between first gear and the second gear through the combined action of arch and recess, can also to a great extent ensure the rotation of first gear and second gear unanimously, transmit the moment of torsion, and arch and recess set up in metal mounting, can be convenient for process.

Preferably, the metal fixing piece is provided with a flat position to form a rotation stopping structure.

This application plays spacing and effect of splining to first gear and second gear through the setting of flat position, can to a great extent ensure the rotation between first gear and the second gear unanimous to transmit the moment of torsion, in addition, because flat position processing is more convenient, can further promote machining efficiency, and reduction in production cost.

Preferably, the metal fixing piece comprises a metal inner ring and an outer ring sleeved on the periphery of the inner ring, and the rotation stopping structure is a spline or a flat position arranged on the outer side surface of the outer ring.

This application includes metal inner ring and outer loop through setting up the metal fixing piece, and the outer loop cover locates the metal inner ring's periphery to this comes to divide into two parts with the metal fixing piece, and the side of outer loop sets up spline and flat position, can play the effect of spline and transmission moment of torsion through spline and flat position on the one hand, and on the other hand, spline and flat position set up in the outer loop, can use the longer time back at the reduction gears, are convenient for directly change the outer loop, the dismouting of being convenient for. Furthermore, the outer ring and the inner ring can be made of different materials, the overall weight of the metal fixing piece can be reduced, the strength required by the inner ring can be met, and the torque can be transmitted at the outer ring.

Preferably, an annular gap is formed between the inner ring and the outer ring, and a connecting rib for connecting the inner ring and the outer ring is arranged in the annular gap.

This application can reduce reduction gears's whole weight to a certain extent through forming annular gap between setting up inner ring and the outer loop to set up the splice bar in the annular gap, can strengthen the joint strength between inner ring and the outer loop, make and be connected more firmly between inner ring and the outer loop.

Preferably, the second gear is a powder metallurgy formed metal piece, and the second gear and the metal fixing piece are integrally formed.

This application is the metalwork through setting up the second gear, and second gear and metal mounting integrated into one piece, can carry out the integrated into one piece to both when adding man-hour, be convenient for process and produce to the second gear is the metalwork, when cooperating with the gear shaft, can solve the reaming problem and the wearing and tearing problem that materials such as plastics can produce.

Preferably, the second gear is a plastic piece integrally injection-molded on the periphery of the metal fixing piece.

This application is the working of plastics through setting up the second gear, can reduce the holistic processing cost of dual-tooth structure to, the second gear is made for plastic materials, can reduce the noise that metal material caused at reduction gears operation in-process, and can reduce the required strong pressure process of metal gear, further reduce processing and assembly cost.

Preferably, the peripheral surface of the metal fixing piece is provided with a plurality of salient points.

This application is provided with a plurality of bumps through setting up the metal mounting periphery, can be so that the bump plays the protruding effect of antiskid, strengthens the joint strength between the pair tooth to can prevent to a great extent that first gear from taking place to break away from and the condition such as slippage.

Preferably, the metal fixing member passes through the inner hole of the first gear and protrudes from the end face of the first gear.

This application passes the hole of first gear and the terminal surface protrusion from first gear through setting up the metal mounting, can make the length of metal mounting be greater than the hole length of first gear for the inner wall of first gear can fully contact with the outer wall of metal mounting, improves wear resistance, and further prevents that first gear from taking place to drop.

Preferably, the first gear is a metal piece formed by powder metallurgy, and the metal fixing piece is pressed and fixed in an inner hole of the first gear to fixedly connect the first gear with the second gear.

This application is the metalwork through setting up first gear, and the wearing and tearing problem that exists when can to a great extent solve first gear and make for materials such as plastics can improve the working strength of pair tooth to first gear and second gear fixed connection can improve the joint strength between first gear, metal mounting and the second gear.

Preferably, the first gear is a plastic part and is fixedly connected with the second gear at the periphery of the metal fixing part through injection molding.

This application is the working of plastics through setting up first gear, can make first gear lie in second gear and metal mounting connection during operation, reduces the noise that reduction gears caused to, first gear injection moulding can reduce the processing cost in metal mounting's periphery.

Preferably, the first gear is meshed with the fixed gear ring, the second gear is meshed with the movable gear ring, and the outer diameter of the second gear is smaller than that of the first gear.

This application is through stipulating first gear and deciding the ring gear meshing, and the second gear with move the ring gear meshing, can make pair tooth structure drive respectively and decide the ring gear and move the ring gear and carry out the transmission to form the two-stage transmission, and the external diameter of second gear is less than the external diameter of first gear, can avoid taking place to disturb between first gear and the second gear to a certain extent.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

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

fig. 2 is a schematic overall configuration diagram of a reduction mechanism in an embodiment of the present application;

FIG. 3 is an enlarged partial schematic view at A of FIG. 2 of the present application;

FIG. 4 is a schematic diagram of an exploded view of a dual cog in one embodiment of the present application;

FIG. 5 is a schematic view of an assembly structure of dual cogs in an embodiment of the present application;

FIG. 6 is a schematic structural view of a dual cog in another embodiment of the present application;

FIG. 7 is a schematic view of an assembly structure of dual cogs in another embodiment of the present application;

FIG. 8 is a schematic structural view of a dual tooth provided in yet another embodiment of the present application;

fig. 9 is a schematic view of an assembly structure of a double coupling tooth provided in yet another embodiment of the present application.

Description of reference numerals:

1-fixing a gear ring;

2-double teeth; 21-a first gear; 22-a second gear; 23-gear shaft; 24-a metal fixture; 25-rotation stopping structure; 26-inner ring; 27-outer ring; 28-connecting ribs;

3-moving a gear ring;

4, a motor;

5-a stirring rod;

6-stirring a cutter group;

7-cup body.

Detailed Description

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

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

As shown in fig. 1 to 9, the present application provides a speed reducing mechanism for a food processor, comprising a fixed gear ring 1, a dual gear 2, a movable gear ring 3 and a planet carrier, which are mutually matched, wherein the dual gear 2 comprises a first gear 21, a second gear 22 and a gear shaft 23, one of the first gear 21 and the second gear 22 is meshed with the fixed gear ring 1, the other of the first gear 21 and the second gear 22 is meshed with the movable gear ring 3, the first gear 21 and the second gear 22 are separately arranged, the second gear 22 is convexly provided with a metal fixing member 24 which is nested into an inner hole of the first gear 21, the interior of the metal fixing member 24 is hollow to form a shaft hole, and the gear shaft 23 penetrates through the shaft hole.

It can be understood that the first gear 21 and the second gear 22 are separately arranged, so that the problem that the dual-gear 2 is difficult to process due to integral forming can be solved to a great extent, the processing efficiency can be improved, and the processing cost can be reduced; and, this application is provided with the metal mounting 24 of nested hole to first gear 21 through second gear 22, can be convenient for mutual location between first gear 21 and the second gear 22 to can improve the intensity of shaft hole department through the metal material of metal mounting 24 self, solve the problem of reaming, and can improve the holistic intensity of pair tooth 2 to a certain extent, to a great extent prevents to take place the wearing and tearing of gear under the great operating mode of moment of torsion.

As an alternative embodiment of the present application, as shown in fig. 1, the food processor includes a main body, a motor 4, a stirring rod 5, a stirring blade set 6, a cup body 7 and a speed reducing mechanism, wherein the cup body 7 is disposed at a lower portion of the main body, the motor 4 is disposed inside the main body and connected to the stirring rod 5 through the speed reducing mechanism, and the stirring rod 5 and the stirring blade set 6 are detachably disposed in the cup body 7, thereby completing the stirring operation. Furthermore, in addition to the embodiment shown in fig. 1, the food processor may be configured such that the cup body 7 is disposed on the top of the main body, and the stirring rod 5 and the stirring blade assembly 6 are disposed inside the cup body 7.

As shown in fig. 1 to 3, an output end of the motor 4 is connected to the double teeth 2 through an output shaft, and transmits power to the double teeth 2, and for a connection manner between the first gear 21 and the second gear 22 in the double teeth 2 and the moving gear and the fixed gear, the following description of other structures is performed by taking an arrangement manner that the first gear 21 is engaged with the fixed gear 1, the second gear 22 is engaged with the moving gear 3, and an outer diameter of the second gear 22 is smaller than an outer diameter of the first gear 21 as an example.

Further, as shown in fig. 4 to 9, the metal fixing member 24 is provided with a rotation stopping structure 25 which is matched with the inner hole of the first gear 21, wherein the arrangement of the rotation stopping structure 25 is not particularly limited in the present application, and as an embodiment of the present application, as shown in fig. 3 and 4, the rotation stopping structure 25 includes a plurality of protrusions which are protruded radially outward from the metal fixing member 24 and a groove which is formed between the adjacent protrusions. As shown in fig. 6 and 7, the rotation stopping structure 25 may be a flat portion provided on the outer wall of the metal fixture 24, and may also have the effect of stopping rotation and transmitting torque.

It can be understood that the protrusions and the grooves formed between the protrusions protruding radially outward from the metal fixing member 24 can stop rotation and transmit torque to the dual-coupling tooth 2, and the protrusions and the grooves are disposed on the metal fixing member 24, so that the dual-coupling tooth 2 can be processed, and the processing efficiency is improved.

In addition, as shown in fig. 8 and 9, as another embodiment of the present application, the metal fixing element 24 may further include a metal inner ring 26 and an outer ring 27 disposed on the outer periphery of the inner ring 26, and the rotation stopping structure 25 is a spline or a flat position disposed on the outer side surface of the outer ring 27. Based on this, can play the effect of spline and transmission moment of torsion through spline and flat position on the one hand, on the other hand, spline and flat position set up in outer loop 27, can be convenient for directly change outer loop 27, the dismouting of being convenient for after the reduction structure uses for a long time.

It should be noted that, no matter the inner wall of the first gear 21 is provided with the protrusion and the groove integrally formed with the metal fixing member 24, or the outer ring 27 sleeved on the outer periphery of the inner ring 26, the inner wall of the first gear 21 is provided with the matching structure matched with the inner wall, so as to realize the assembly of the first gear 21 and the second gear 22.

Further, as shown in fig. 7 and 8, an annular gap is formed between the inner ring 26 and the outer ring 27, and a connecting rib 28 for connecting the inner ring 26 and the outer ring 27 is provided in the annular gap.

This application can reduce reduction gears's whole weight to a certain extent through setting up inner ring 26 and forming the annular gap between outer ring 27 to set up splice bar 28 in the annular gap, can strengthen the joint strength of inner ring 26 between outer ring 27, make inner ring 26 connect more firmly between outer ring 27.

In addition, in order to improve the tightness of the connection between the first gear 21 and the metal fixing member 24, as a preferred embodiment of the present application, a plurality of protruding points are provided on the outer circumferential surface of the metal fixing member 24, and the plurality of protruding points may be uniformly spaced to form a structure similar to an anti-slip protrusion, thereby largely preventing the first gear 21 from being disengaged and slipping off.

Further, the metal fixing piece 24 may pass through the inner hole of the first gear 21 and protrude from the end surface of the first gear 21, so that the length of the metal fixing piece 24 is greater than that of the inner hole of the first gear 21, the inner wall of the first gear 21 can be fully contacted with the outer wall of the metal fixing piece 24, the wear resistance is improved, and the first gear 21 is further prevented from falling off.

As a preferred embodiment of the present application, the present application does not specifically limit the arrangement and specific material structure of the first gear 21 and the second gear 22, and for convenience of description, the present application will be described in the following four different embodiments:

the first embodiment is as follows:

the first gear 21 is a metal piece formed by powder metallurgy, the metal fixing piece 24 is pressed and fixed in an inner hole of the first gear 21 to fixedly connect the first gear 21 with the second gear 22, and the second gear 22 is a plastic piece, so that the strength of the first gear 21 in meshing with the fixed gear ring 1 can be improved, the abrasion of the first gear 21 is reduced, the second gear 22 is a plastic piece, the overall noise of the speed reducing mechanism can be reduced, the processing cost is saved, and the forced compression process of the metal gear is reduced.

Example two:

the second gear 22 is a metal piece formed by powder metallurgy, the second gear 22 and the metal fixing piece 24 are integrally formed, the first gear 21 is a plastic piece, the second gear 22 and the metal fixing piece 24 are integrally formed, the processing of the gear can be facilitated, and the problems of reaming and crushing of the gear in the working process can be effectively reduced when the gear is matched with the gear shaft 23; the first gear 21 is a plastic member, which can reduce noise of the double teeth 2 and reduce cost.

Example three:

first gear 21 and second gear 22 are metal material and make, and first gear 21 and the components of a whole that can function independently setting of second gear 22 can replace traditional plastic gear, improve the intensity of pair tooth 2, and the condition that to a great extent prevents that gear intensity is not enough when the moment of torsion is great takes place.

Example four:

the first gear 21 and the second gear 22 are both plastic parts, and the second gear 21 and the first gear 22 are connected through the metal fixing part 24, so that the weight of the speed reducing mechanism can be further reduced through the arrangement of the plastic parts, and the noise generated in the operation process of the speed reducing mechanism can be greatly reduced; in addition, the metal fixing member 24 can solve the reaming problem by means of the metal material, so that the metal fixing member is convenient to process, and the processing cost and the processing time are saved.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "bottom", "inner", "outer", "axial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of 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 thus, should not be considered as limiting the present invention.

The description in this application as relating to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

The technical solution protected by the present invention is not limited to the above embodiments, and it should be noted that the technical solution of any one embodiment is combined with the technical solution of one or more other embodiments in the protection scope of the present invention. Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a reduction gears for food preparation machine, is including deciding ring gear, duplex tooth, moving ring gear and planet carrier mutually supporting, duplex tooth includes first gear, second gear and gear shaft, first gear and second gear both one with decide the ring gear meshing, another in the two with move the ring gear meshing, its characterized in that, first gear with second gear components of a whole that can function independently sets up, the protruding metal fixing spare that is equipped with of second gear nestedly extremely in the hole of first gear, the inside cavity of metal fixing spare forms the shaft hole, the gear shaft run through in the shaft hole.

2. The reduction mechanism for a food processor of claim 1, wherein the metal fixture member is provided with a rotation stop structure that mates with the internal bore of the first gear.

3. The retarding mechanism for a food processor of claim 2, wherein the rotation stopping structure includes a plurality of projections projecting radially outwardly from the metal fixing member and recesses formed between adjacent ones of the projections; or the metal fixing piece is provided with a flat position to form the rotation stopping structure.

4. The decelerating mechanism for a food processor as claimed in claim 2, wherein the metal fixing member comprises a metal inner ring and an outer ring sleeved on the outer periphery of the inner ring, and the rotation stopping structure is a spline or a flat position arranged on the outer side surface of the outer ring.

5. The retarding mechanism for a food processor of claim 4, wherein an annular gap is formed between the inner ring and the outer ring, the annular gap having a connecting rib disposed therein that connects the inner ring to the outer ring.

6. The speed reducing mechanism for a food processor of claim 1, wherein the second gear is a powder metallurgy formed metal piece, the second gear being formed integrally with the metal fixing member.

7. The reduction mechanism of claim 1, wherein the second gear is a plastic member integrally molded around the metallic mounting member.

8. The decelerating mechanism for a food processor as claimed in claim 7, wherein the metallic fixing member has a plurality of protrusions formed on an outer circumferential surface thereof;

or the metal fixing piece penetrates through the inner hole of the first gear and protrudes out of the end face of the first gear.

9. The reduction mechanism of claim 1, wherein the first gear is a powder metallurgy formed metal piece, and the metal fixing member is press-fitted and fixed in the inner hole of the first gear to fixedly connect the first gear with the second gear; or the first gear is a plastic part and is fixedly connected with the second gear through injection molding on the periphery of the metal fixing part.

10. The reduction mechanism for a food processor of claim 1, wherein the first gear is engaged with the fixed gear ring, the second gear is engaged with the moving gear ring, and an outer diameter of the second gear is smaller than an outer diameter of the first gear.