CN216724286U - Low-noise food processor - Google Patents

Abstract

The utility model discloses a low-noise food processing machine which is beneficial to smooth movement and noise reduction and comprises a main machine and a cup body assembly, wherein the cup body assembly comprises a cup body and a cup cover for covering the cup body, a rotary joint is arranged at the bottom of the inner side of the cup body, the main machine is provided with a main motor and a reduction gearbox, the output end of the main motor is connected with the input end of the reduction gearbox, the output end of the reduction gearbox is connected with the rotary joint, the reduction gearbox is provided with a planetary gear reduction mechanism and a shifting clutch, the shifting of the planetary gear reduction mechanism is controlled by the shifting clutch so that the output end of the reduction gearbox outputs different rotating speeds, the planetary gear reduction mechanism comprises a planetary gear and a sun gear, and the planetary gear and the sun gear are bevel gears.

Description

Low-noise food processor

Technical Field

The utility model relates to the technical field of small kitchen appliances, in particular to a food processor.

Background

The existing food processing machine for food processing is provided with a multifunctional cup capable of replacing a heating cup body except for high rotating speed required by high-speed wall breaking, the multifunctional cup is formed by installing a reduction gear box between a cup bottom linkage shaft and a base, an S-shaped cutter for meat grinding can be installed on the multifunctional cup linkage shaft in a replaceable manner, a dough sheet or a sliced cutter head for kneading dough, the power of the structure goes from a motor to a lower coupling device to an upper coupling, to a reduction planetary gear strip, then to the multifunctional linkage shaft, an extension shaft and then to the cutter head structure, wherein a transmission link is very long, in addition, the reduction planetary gear strip at the cup bottom is meshed with a straight gear, the impact noise is large, the transmission is unstable, the high vibration and the high noise are caused, the use experience of a user is influenced, and the improvement is urgently needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a low-noise food processor.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a low noise food preparation machine, includes host computer and cup subassembly, cup subassembly includes the cup, is used for the bowl cover that the lid closed the cup, the inboard bottom of cup is equipped with rotary joint, the host computer is equipped with main motor and reducing gear box, the output of main motor is connected with the input of reducing gear box, the output and the rotary joint of reducing gear box are connected, the reducing gear box is equipped with planetary gear reduction mechanism and the clutch of shifting, shifts so that the output of reducing gear box exports different rotational speeds through the clutch control planetary gear reduction mechanism of shifting, planetary gear reduction mechanism includes planet wheel and sun gear, planet wheel and sun gear are the helical gear.

Preferably, the upper end of the main motor is provided with a motor upper support, the reduction gearbox is provided with a box body, the box body comprises an upper box body and a lower box body which are combined together, and the lower box body is connected with the motor upper support.

Preferably, a downward-recessed cylindrical groove is formed in the center of the upper motor support, and a first ball bearing for supporting a motor shaft of the main motor is mounted in the cylindrical groove.

Preferably, the upper and lower outer races of the reduction gearbox are provided with supporting edges, the supporting edges are circumferentially provided with at least two mounting sleeves, the mounting sleeves are internally provided with buffering cushions, the host is provided with an upper shell and a lower shell which are combined together, the lower shell is provided with supporting screw hole columns, the supporting screw hole columns penetrate through the buffering cushions, the upper shell is provided with via hole sleeves, and screws penetrate through the via hole sleeves to be connected with screw holes of the supporting screw hole columns.

Preferably, the gear shifting clutch comprises a gear shifting motor and a gear shifting tooth head driven by the gear shifting motor to axially move relative to the reduction gearbox, and the gear shifting tooth head is slidably mounted on a motor shaft of the main motor.

Preferably, the gear shifting tooth head is rotationally connected with a gear shifting fork through a second ball bearing; and/or the gear shifting gear head is driven to lift by a gear shifting motor and a lead screw nut transmission mechanism.

Preferably, the output end of the reduction gearbox is provided with an inner connector used for outputting relatively high rotating speed and an outer connector arranged on the circumferential outer side of the inner connector and used for outputting relatively low rotating speed, the center of the reduction gearbox is provided with a sun shaft, the inner connector is connected with the sun shaft, and when the reduction gearbox outputs relatively high rotating speed, the gear shifting tooth head is connected with the sun shaft.

Preferably, the planetary gear speed reducing mechanism comprises a primary planetary gear assembly and a secondary planetary gear assembly; the primary planetary gear assembly comprises a primary inner gear ring, a primary planet gear and a primary planet carrier, the primary planet carrier is arranged on the sun shaft, and the primary planet gear is arranged on the primary planet carrier and is meshed with the primary inner gear ring; the secondary planetary gear assembly comprises a secondary planetary gear and a secondary planet carrier, the secondary planetary gear is arranged on the secondary planet carrier and meshed with the primary planet carrier, and the secondary planet carrier is connected with the external connector.

Preferably, the external connector and the secondary planet carrier are of an integral structure.

Preferably, the helical angle of the helical gear is 8-25 degrees.

The technical scheme adopted by the utility model has the following beneficial effects:

1. the gear shifting clutch is used for controlling the planetary gear speed reducing mechanism to shift so that the output end of the speed reducing box outputs different rotating speeds, and therefore when the rotary joint is connected with different rotary functional components, the different rotating speeds can be correspondingly output, and corresponding functions are realized; planet wheel and sun gear are the helical gear, planet wheel and sun gear are the spiral meshing at the in-process of meshing, the helical angle of helical gear is big then the overlap ratio is big more, be favorable to the motion steadily and noise reduction more, the increase of helical gear sun gear and helical gear planet gear helical gear overlap ratio, make the bearing capacity of gear improve, thereby the life-span of gear has been prolonged, the time of meshing has mainly been decided to the overlap ratio, and the meshing time of helical gear is long, area of contact is big, make stress reduce, and make the transmission steady and increased the economic nature.

2. The reduction gearbox is designed at the front support end of the motor, so that the lower box body of the reduction gearbox is directly connected with the upper support of the motor. Therefore, the power transmission distance from the motor to the reduction gearbox is effectively shortened, energy loss and vibration caused by friction and impact in the middle link are reduced, and noise is reduced.

3. The central authorities of motor upper bracket are equipped with to sunken cylinder groove, and the cylinder inslot is installed the first ball bearing who supports the motor shaft of main motor, and this structure has reduced the whole height of motor acceleration and deceleration case subassembly, has improved assembly axiality between them, also is favorable to the noise reduction.

4. The lower box of reducing gear box has formed motor and reducing gear box assembly after being connected with the motor, on the reducing gear box, the lower box outer lane is equipped with the support limit, it is provided with two at least installation sleeves to support border circumference, installation cushion in the installation sleeve, the host computer is equipped with last casing and lower casing of combining together, upward be equipped with the via hole sleeve on the casing, be equipped with support screw hole post down on the casing, the screw passes last casing via hole sleeve, lock down on the casing support screw post, on this, casing and its central centering degree have further ensured down, and cushion slows down the impact, the noise reduction.

5. In order to ensure that the high-speed wall breaking function is not influenced by the running noise of the reduction gearbox when in running, the gear shifting motor and the lead screw nut transmission mechanism drive the gear shifting tooth head to shift to a high rotating speed, at the moment, only the flat position inside the gear shifting tooth head is coupled with the flat position of the motor shaft and the sun shaft, but the gear shifting tooth head is separated from the gear assembly in the reduction gearbox, so that the reduction gearbox cannot feel the vibration when in running, and the noise reduction effect is obvious.

6. The planetary gear speed reducing mechanism is composed of mature first and second planetary gear assemblies, the output end of the speed reducing box is provided with an inner connector for outputting relatively high rotating speed and an outer connector arranged on the circumferential outer side of the inner connector for outputting relatively low rotating speed, the inner connector is connected with the sun shaft, and the second-stage planet carrier is connected with the outer connector, so that the inner connector and the outer connector do not need to rotate all the time.

7. The outer connector and the secondary planet carrier are designed into an integral structure, so that the impact between the outer connector and the secondary planet carrier is eliminated on one hand, the problems of gaps and misalignment generated when the outer connector and the secondary planet carrier are assembled respectively are also eliminated on the other hand, and the working vibration and the noise are reduced.

8. The bigger the helical angle of the helical gear is, the bigger the contact ratio is, the more beneficial to the smooth movement and the noise reduction, but if the helical angle is too big, the stress influence on the shaft, the bearing and the like is bad, so the helical angle is selected to be 8-25 degrees.

The following detailed description and the accompanying drawings are included to provide a further understanding of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and the detailed description below:

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

FIG. 2 is a first schematic structural diagram of a main motor and a reduction gearbox inside a main machine according to the utility model;

FIG. 3 is a schematic structural diagram II of a main motor and a reduction gearbox inside a main machine in the utility model;

FIG. 4 is a schematic structural view of a planetary gear reduction mechanism according to the present invention;

FIG. 5 is an exploded view of the main motor and the reduction box of the present invention;

FIG. 6 is a schematic view of the engagement of the gear shifting head with the planetary gear reduction mechanism during the first output of the rotational speed;

FIG. 7 is a schematic view of the engagement of the shift head with the planetary reduction mechanism at a second speed output;

FIG. 8 is a schematic diagram of the engagement of the gear shifting head with the planetary gear reduction mechanism at the third output speed;

FIG. 9 is a schematic structural view of the two-stage planet carrier and the external connection joint of the present invention;

FIG. 10 is a schematic view of the overall structure of the reduction box;

FIG. 11 is an enlarged view taken at A in FIG. 10;

in the figure: the main machine 1, the main motor 11, the motor upper bracket 111, the cylinder groove 1111, the first ball bearing 1112, the planetary gear speed reducing mechanism 12, the sun shaft 121, the primary planet gear 122, the primary planet carrier 123, the sun gear 1231, the primary annular gear 124, the secondary planet gear 125, the inner connecting joint 126, the secondary planet carrier 127, the outer connecting joint 128, the buffer cushion 129, the shifting clutch 13, the shifting tooth head 131, the shifting fork 132, the second ball bearing 133, the shifting motor 134, the cup body assembly 2, the cup body 21, the rotary joint 22, the rotary basket 23 and the cup cover 24.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

It will be appreciated by those skilled in the art that features from the examples and embodiments described below may be combined with each other without conflict.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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

Example one

As shown in fig. 1 to 4, the utility model provides a low-noise food processor, which comprises a main machine 1 and a cup body assembly 2, wherein the cup body assembly 2 comprises a cup body 21 and a cup cover 24 for covering an opening at the top of the cup body 21, a rotary joint 22 is arranged at the bottom of the inner side of the cup body 21, the main machine 1 is provided with a main motor 11 and a reduction box, the output end of the main motor 11 is connected with the input end of the reduction box, and the output end of the reduction box is connected with the rotary joint 22.

In order to realize multi-gear rotating speed output, the reduction gearbox is provided with a planetary gear reduction mechanism 12 and a shifting clutch 13, and the shifting of the planetary gear reduction mechanism 12 is controlled by the shifting clutch 13 so that the output end of the reduction gearbox outputs different rotating speeds. Therefore, when the rotary joint is connected with different rotary functional components, different rotating speeds can be correspondingly output, and corresponding functions are realized.

Referring to the existing planetary gear reduction mechanism, the planetary gear reduction mechanism 12 includes a planetary gear and a sun gear 1231.

In order to make the engagement and disengagement of the planet gear and the sun gear be smooth transition, as shown in fig. 4, the planet gear and the sun gear 1231 are both designed as helical gears, because the former straight gears are engaged along the tooth width or the tooth thickness simultaneously, as a result, the transmission of impact vibration noise is unstable, while the helical gears are superior to the straight gears, and are engaged spirally in the engagement process, the bigger the helical angle of the helical gears is, the bigger the contact ratio is, which is more beneficial to smooth movement and noise reduction, the increase of the contact ratio of the helical sun gear and the helical planet gear of the helical gears improves the bearing capacity of the gears, thereby prolonging the service life of the gears, the contact ratio mainly determines the engagement time, and the engagement time of the helical gears is long, the contact area is large, the stress is reduced, the transmission is smooth, and the economy is increased.

It is understood that the bigger the helix angle of the bevel gear is, the bigger the contact ratio is, the better the motion stability and the noise reduction are, but if the helix angle is too big, the stress influence on the shaft, the bearing and the like is bad, so the helix angle is selected to be 8-25 degrees.

It is understood that the above-mentioned rotary joint 22 can be connected with rotary components with different functions, such as the rotary basket 23 shown in fig. 1, and can realize the functions of washing food materials or refreshing and blanching. But also a crushing knife, a meat grinder, a shredding knife, a slicing knife, or other rotating functional parts that can be used on a food processor.

Example two

In a further modification of the first embodiment, as shown in fig. 3, an upper motor bracket 111 is provided at an upper end of the main motor 11. The box body of the reduction box comprises an upper box body and a lower box body which are combined together, and the lower box body is connected with the upper bracket 111 of the motor. In order to reduce noise and vibration, the reduction gearbox is designed at the end of the upper motor support, and the lower box body of the reduction gearbox is directly connected with the upper motor support, so that the power transmission distance from the main motor to the reduction gearbox is effectively shortened, energy loss and vibration generated by friction and impact in an intermediate link are reduced, and noise reduction is facilitated.

Specifically, four bolts are circumferentially distributed on a lower box body of the reduction gearbox and connected to the upper motor support 111.

As shown in fig. 3, a downward concave cylindrical groove 1111 is formed in the center of the motor upper bracket 111, and a first ball bearing 1112 for supporting the motor shaft of the main motor 11 is installed in the cylindrical groove 1111. The structure reduces the overall height of the reduction box component of the main motor, improves the assembly coaxiality of the reduction box component and the main motor, and is also favorable for reducing noise.

In order to reduce the swing and vibration generated after assembly, as shown in fig. 1 and 5, firstly, the lower box body of the reduction box is connected with the motor to form a motor and reduction box combination. In addition, host computer 1 is equipped with the last casing and the lower casing of combining together, the upper and lower box outer lane of reducing gear box is equipped with the support limit, support border circumference is provided with two at least installation sleeves, installation cushion 129 in the installation sleeve, be equipped with the support screw hole post on the casing down, the support screw hole post passes cushion 129, be equipped with the via hole sleeve on the last casing, the screw hole that the screw passed the via hole sleeve from the top down is connected with the screw hole of support screw hole post. Therefore, the alignment of the upper shell, the lower shell and the centers of the upper shell and the lower shell is further guaranteed, and the cushion cushions the impact and reduces the noise.

EXAMPLE III

In a further modification of the first embodiment, as shown in fig. 2, the planetary gear speed reduction mechanism 12 includes a primary planetary gear assembly and a secondary planetary gear assembly. The primary planetary gear assembly comprises a primary annular gear 124, a primary planet gear 122 and a primary planet carrier 123; the secondary planetary gear assembly comprises a secondary planet gear 125 and a secondary planet carrier 127, the primary planet carrier 123 and the secondary planet carrier 127 are arranged on a sun shaft 121, the sun shaft 121 is positioned in the center of the reduction gearbox, the primary planet gear 122 is arranged on the primary planet carrier 123 and meshed with the primary annular gear 124, and the secondary planet gear 125 is arranged on the secondary planet carrier 127 and meshed with a sun gear 1231 on the primary planet carrier 123. As shown in fig. 4, the sun gear 1231 and the secondary planet gears 125 on the primary planet carrier 123 are both helical gears.

Other structures and operation principles of the planetary gear speed reducing mechanism 12 not described can be referred to in the prior art, and are not described in detail herein.

In order to realize that the output end of the reduction gearbox outputs different rotating speeds, the output end of the reduction gearbox is provided with an inner connecting joint 126 for outputting relatively high rotating speed and an outer connecting joint 128 arranged on the circumferential outer side of the inner connecting joint for outputting relatively low rotating speed. The inner connector 126 is connected with the sun shaft 121 and driven by the sun shaft 121, and the outer connector 128 is connected with the secondary planet carrier 127 and driven by the secondary planet carrier 127.

In order to realize the gear shifting of the planetary gear speed reducing mechanism 12, the gear shifting clutch 13 comprises a gear shifting motor 134 and a gear shifting tooth head 131 which is driven by the gear shifting motor 134 and is axially movable relative to the speed reducing box, and the gear shifting tooth head 131 is slidably mounted on a motor shaft of the main motor 11.

Further, the gear shifting device further comprises a screw nut transmission mechanism, the gear shifting head 131 is rotatably connected with a gear shifting fork 132 through a second ball bearing 133, and the gear shifting fork 132 is driven to ascend and descend by a gear shifting motor 134 and the screw nut transmission mechanism. The gear shifting fork 132 can drive the gear shifting tooth head 131 to move up and down to shift gears, and meanwhile, the gear shifting tooth head 131 can also rotate smoothly relative to the gear shifting fork 132.

As shown in fig. 2, the planetary gear reduction mechanism 12 can output a multi-speed rotation speed by controlling shifting by the shift clutch 13.

As shown in FIG. 6, the first rotational speed output is that the motor shaft of the main motor 11 is directly driven with the sun shaft 121 through the gear shifting head 131, and finally the rotational speed is output by the inner output joint 126, which is 1:1 output, and the output end of the reduction box outputs relatively high rotational speed.

During gear shifting, the gear shifting gear head 131 is driven to lift by the gear shifting motor 134 and the lead screw nut transmission mechanism, only the flat position inside the gear shifting gear head is coupled with the flat position of the motor shaft and the sun shaft at the moment, but the gear shifting gear head is separated from a gear assembly in the reduction gearbox, so that vibration of the reduction gearbox cannot be sensed during operation, the main motor 11 directly drives the inner connector 126, and compared with the noise reduction effect which always needs the rotation of the inner connector and the outer connector on the market, the noise reduction effect is obvious.

As shown in fig. 7, in the second rotational speed output, when the gear shifting tooth head 131 rises to mesh with the primary planet wheel 122, the primary and secondary planet gear assemblies are meshed, and finally, the rotational speed is output by the external output joint 128, and the output end of the reduction gearbox outputs a relatively low rotational speed.

As shown in FIG. 8, in the third rotational speed output, when the gear shifting tooth head 131 rises to be engaged with the bottom end of the primary planet carrier 123, only the secondary planet gear assembly is engaged, and finally, the rotational speed is output through the external output joint 128, and the reduction gearbox outputs a relative middle rotational speed.

In order to further reduce the machining and assembling error between the fittings, as shown in fig. 9, in the present embodiment, the external connection head 127 and the secondary planet carrier 128 are integrally formed, and may be formed by casting, forging, powder metallurgy, and the like. Because integrate into a part with second grade planet carrier 127 and external connection head 128, the impact of external connection head and second grade planet carrier has been eliminated like this, has also eliminated the clearance and the misalignment problem that produce when both assemble respectively, reduces work vibrations and noise, has promoted user's experience.

In addition, other structures not described may refer to the first embodiment and the second embodiment.

Example four

As shown in fig. 10 and 11, the difference from the third embodiment is that the external connection head 127 and the second-stage planet carrier 128 are of a split structure and are fixedly connected together. Reference may be made to the first embodiment, the second embodiment and the third embodiment for other structures not described.

While the utility model has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the utility model is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the utility model as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides a low noise food preparation machine, includes host computer and cup subassembly, cup subassembly includes the cup, is used for the bowl cover that the lid closed the cup, the inboard bottom of cup is equipped with rotary joint, the host computer is equipped with main motor and reducing gear box, the output of main motor is connected with the input of reducing gear box, the output and the rotary joint of reducing gear box are connected, its characterized in that, the reducing gear box is equipped with planetary gear reduction mechanism and the clutch of shifting gears, shifts so that the output of reducing gear box exports different rotational speeds through the clutch control planetary gear reduction mechanism of shifting gears, planetary gear reduction mechanism includes planet wheel and sun gear, planet wheel and sun gear are the helical gear.

2. A low noise food processor as defined in claim 1, wherein the upper end of the main motor is provided with a motor upper bracket, the reduction box is provided with a box body, the box body comprises an upper box body and a lower box body which are combined together, and the lower box body is connected with the motor upper bracket.

3. A low noise food processor as defined in claim 2, wherein said motor upper bracket has a downwardly concave cylindrical recess in the center thereof, said cylindrical recess receiving therein a first ball bearing for supporting the motor shaft of the main motor.

4. A low noise food processor as defined in claim 2, wherein the upper and lower casing rims of the reduction casing are provided with support edges, the support edges are circumferentially provided with at least two mounting sleeves, the mounting sleeves are provided with cushion pads, the main body is provided with an upper casing and a lower casing which are combined together, the lower casing is provided with support screw hole columns which penetrate through the cushion pads, the upper casing is provided with through hole sleeves, and screws penetrate through the through hole sleeves to be connected with screw holes of the support screw hole columns.

5. A low noise food processor as defined in claim 1, wherein said shifting clutch comprises a shifting motor, a shifting bit axially movable relative to the reduction box and driven by the shifting motor, said shifting bit being slidably mounted on a motor shaft of the main motor.

6. A low noise food processor as defined in claim 5, wherein said shift head is rotatably connected to a shift fork via a second ball bearing; and/or the gear shifting gear head is driven to lift by a gear shifting motor and a lead screw nut transmission mechanism.

7. A low noise food processor as defined in claim 5, wherein the output end of the reduction box is provided with an inner connection joint for outputting a relatively high rotational speed and an outer connection joint for outputting a relatively low rotational speed provided at a circumferential outer side of the inner connection joint, the reduction box being provided at a center thereof with a sun shaft, the inner connection joint being connected to the sun shaft.

8. A low noise food processor as defined in claim 7, wherein said planetary gear reduction mechanism comprises a primary planetary gear assembly, a secondary planetary gear assembly; the primary planetary gear assembly comprises a primary inner gear ring, a primary planet gear and a primary planet carrier, the primary planet carrier is arranged on the sun shaft, and the primary planet gear is arranged on the primary planet carrier and is meshed with the primary inner gear ring; the secondary planetary gear assembly comprises a secondary planetary gear and a secondary planet carrier, the secondary planetary gear is arranged on the secondary planet carrier and meshed with the primary planet carrier, and the secondary planet carrier is connected with the external connector.

9. A low noise food processor as defined in claim 8, wherein said external connection head is integrally formed with said secondary planet carrier.

10. A low noise food processor as defined in claim 1, wherein said helical gear has a helix angle of 8-25 degrees.

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