CN219538112U - Double-layer stirring knife and stirrer - Google Patents

Abstract

The utility model discloses a double-layer stirring knife and a stirrer, wherein the double-layer stirring knife comprises: a first stirring blade mounted on the first shaft portion; the second stirring knife is arranged on the second shaft part; the first shaft part and the second shaft part are coaxially arranged, so that the first stirring blade and the second stirring blade coaxially rotate at different heights, a reduction gear transmission assembly is arranged between the first shaft part and the second shaft part, and the second shaft part is driven to rotate through the reduction gear transmission assembly when the first shaft part rotates, so that the first stirring blade and the second stirring blade coaxially rotate at different speeds; the utility model is provided with the reduction gear transmission assembly, and the first stirring blade and the second stirring blade run at different rotation speeds by matching with the reduction gear transmission assembly through the power input connector, so that the transmission structure is simplified, the transmission is more stable, and the noise is low; when the first stirring knife and the second stirring knife which are coaxially arranged rotate at different speeds, strong vortex and differential shearing are formed, so that the aim of improving the stirring performance is fulfilled.

Description

Double-layer stirring knife and stirrer

Technical Field

The utility model relates to the technical field of food mixers, in particular to a double-layer mixer and a mixer.

Background

The juicers currently available on the market generally comprise: base, stirring cup and bowl cover, stirring cup and base are split type structure, install the stirring sword in the stirring cup, and after the stirring cup was placed in the base, the stirring sword passed through the connector and the motor output shaft in the base, through motor drive stirring sword high-speed rotation.

In order to strengthen the stirring effect, the producer starts to improve stirring sword among the prior art, through the angle improvement that designs to the multitool leaf shape and pass through the sword leaf, and then change the effect, like chinese patent No. 201820058184.0, disclosed a stirring sword of mixer, including arbor and connect at epaxial last blade, the lower blade, last blade is provided with two upper blades of orientation top, lower blade circumference has set gradually first lower blade, second lower blade, third lower blade, fourth lower blade, be different contained angles between blade and the horizontal plane, this patent technology can accelerate the crushing speed of food material, promote crushing effect greatly.

However, in the above technology, the upper blade and the lower blade are overlapped and rotate at the same speed, and a stirring blade is substantially one stirring blade, so that the above technology is further improved by manufacturers, two stirring blades with different rotation speeds are arranged in the stirring cup, so as to enhance the stirring effect, for example, in chinese patent No. 201721041461.9, two sets of independently-operated blade transmission devices and a food stirrer thereof are disclosed, including an upper blade set, a lower blade set, an upper blade set shaft connected below the upper blade set, a lower blade set shaft connected below the lower blade set, and a lower blade set shaft connected with a lower blade set driver, wherein the lower blade set shaft is provided with a middle hole, and the upper blade set shaft passes through the middle hole of the lower blade set shaft and is connected with the upper blade set driver. The technology can realize that the upper blade group and the lower blade group rotate at different speeds, but the upper blade group and the lower blade group are respectively connected and driven by the upper blade group driver and the lower blade group driver, and the design can lead to 'double-output connection double-connection joint' when the blade device is connected with the transmission structure of the main machine of the mixer, so that the power transmission is unstable, the dislocation clamping stagnation is easy during the installation, and the use effect is greatly reduced.

Therefore, it is necessary to develop a stirring blade structure that can drive two stirring blades to operate at different speeds through a single connector to increase the stirring effect of the stirrer.

Disclosure of Invention

In view of the above, the utility model provides a double-layer stirring blade and a stirrer.

In order to achieve the above object, a first aspect of the present utility model provides a double-layer stirring blade, comprising:

a first stirring blade mounted on the first shaft portion;

the second stirring knife is arranged on the second shaft part;

the first shaft part and the second shaft part are coaxially arranged, so that the first stirring blade and the second stirring blade coaxially rotate at different heights, a reduction gear transmission assembly is arranged between the first shaft part and the second shaft part, and the second shaft part is driven to rotate through the reduction gear transmission assembly when the first shaft part rotates, so that the first stirring blade and the second stirring blade coaxially rotate at different speeds;

the first shaft part is connected with an output shaft of the motor and is driven by the motor to rotate at a high speed, so that the first stirring cutter realizes high-speed cutting; the second shaft part is decelerated through the reduction gear transmission assembly, and the rotation speed of the second shaft part is lower than that of the first shaft part, so that the second stirring blade rotates at a low speed; when the first stirring knife and the second stirring knife which are coaxially arranged rotate at different speeds, strong vortex and differential shearing are formed, so that the aim of improving the stirring performance is fulfilled.

In a further aspect, the reduction gear assembly includes:

the inner wall of the gear outer ring is provided with biting teeth;

a sun gear fixedly mounted on the first shaft portion and synchronously rotating along with the first shaft portion;

the planetary gear is meshed between the outer ring of the gear and the sun gear;

under the drive of the sun gear, the planetary gear revolves around the sun gear in the outer ring of the gear;

the second shaft part is driven to rotate through a planetary gear;

the speed reduction gear transmission assembly achieves the purpose of speed reduction transmission, and the first stirring blade and the second stirring blade rotate at different rotating speeds, so that the structure is compact.

In a further technical scheme, the outer ring of the gear is fixedly arranged on the bottom cover of the gear box to form the gear box; an accommodating space is formed between the outer ring of the gear and the bottom cover of the gear box; a third sealing ring is arranged between the outer ring of the gear and the base;

the center of the gear outer ring is provided with a sleeve body, the second shaft part penetrates through the sleeve body and extends upwards, and the second stirring cutter is fixedly arranged at the top of the second shaft part through a lower fixing nut;

the accommodating space formed between the outer ring of the gear and the base is used for accommodating the sun gear and the planetary gear, the purpose of sealing is achieved through the third sealing ring and the second sealing ring, and the whole double-layer stirring cutter can be washed by soaking in water.

In a further technical scheme, an inner sleeve hole is formed in the second shaft part, a first shaft part passes through the inner sleeve hole of the second shaft part and is installed, and a first bearing and a first sealing ring are arranged between the first shaft part and the second shaft part; a second bearing and a second sealing ring are arranged between the second shaft part and the sleeve body; specific mounting arrangements for the first and second shaft portions are defined herein, coaxially mounted, and of compact construction without affecting relative rotation therebetween.

In a further technical scheme, the planetary gear mechanism further comprises a planetary gear support, wherein the planetary gear support is in limiting connection with a planetary gear through a rotating shaft; the second shaft part is arranged at the center of the planetary gear support and protrudes upwards; the planetary gear support is approximately disc-shaped, the planetary gear support is integrally covered on the top of the planetary gear, the second shaft part and the planetary gear support can be integrally formed or fixedly installed, and the planetary gear drives the planetary gear support and the second shaft part to rotate while revolving, so that the purpose of driving the second stirring cutter to rotate is achieved.

In a further technical scheme, the first shaft part penetrates through the base to extend downwards, and an upper connector is arranged at the tail end of the first shaft part; the first stirring blade is fixed at the upper end of the first shaft part through an upper fixing nut.

In a further technical scheme, after the first shaft part and the second shaft part are subjected to speed reduction transmission through a speed reduction gear transmission assembly, the first shaft part and the second shaft part rotate in the same direction; or (b)

The first shaft part and the second shaft part reversely rotate after the first shaft part and the second shaft part are in speed reduction transmission through the speed reduction gear transmission assembly.

The first shaft part and the second shaft part rotate in the same direction or in opposite directions, namely, the first stirring blade and the second stirring blade are driven to rotate in the same direction or in opposite directions, so that the shearing effect can be realized, but the same direction rotation is preferable.

A second aspect of the present utility model proposes a mixer comprising: the double-layer stirring knife is arranged in the stirring cup, so that the stirring effect of the stirrer can be improved.

In a further technical scheme, the base of the double-layer stirring cutter is arranged at the bottom of the stirring cup in a rotary lock catch mode, and a positioning groove is formed in the bottom of the base; the main machine is provided with a stirring cup corresponding to the assembly position, and a lower connector and a positioning rib are arranged at the position; after the stirring cup is placed on the host machine, the lower connector is correspondingly connected with the upper connector in a meshed mode, and the purpose of driving the first stirring cutter and the second stirring cutter to rotate at different speeds is achieved; the positioning groove is correspondingly matched with the positioning rib, so that the purpose of stable installation is realized.

In a further technical scheme, be provided with the motor in the host computer, the connector rotates under the motor drive, and then the connector is gone up in the transmission.

Compared with the prior art, the utility model has the beneficial technical effects that: the reduction gear transmission assembly is arranged in the double-layer stirring knife, and the first stirring knife and the second stirring knife are operated at different rotating speeds through the power input connector and the reduction gear transmission assembly, so that the transmission structure is simplified, the stability is better, the transmission is more stable, and the noise is low; when the first stirring knife and the second stirring knife which are coaxially arranged rotate at different speeds, strong vortex and differential shearing are formed, so that the aim of improving the stirring performance is fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first angular schematic view of a double-layer stirring blade;

FIG. 2 is a second angular schematic view of a double-layer stirring blade;

FIG. 3 is a schematic cross-sectional view of a double-layer stirring blade;

FIG. 4 is a schematic illustration of a reduction gear drive assembly in a double-layered stirring blade;

FIG. 5 is a schematic diagram of a combination of a second stirring blade and a reduction gear drive assembly in a double-layer stirring blade;

FIG. 6 is a schematic diagram showing the combination of the first stirring blade with the first shaft and the upper connector in the double-layer stirring blade;

FIG. 7 is a schematic cross-sectional view of a dual layer stirring blade mounted to a stirring cup;

FIG. 8 is a schematic structural view of a blender;

FIG. 9 is an exploded view of the blender;

fig. 10 is an exploded view of the stirring cup.

Reference numerals illustrate:

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1:

a double-layer stirring blade, as shown in fig. 1-2, comprising: the first stirring blade 100, the second stirring blade 200 and the reduction gear transmission assembly 300 are coaxially arranged and can rotate on each other.

The first stirring blade 100 is mounted on top of the first shaft portion 110, the second stirring blade 200 is mounted on top of the second shaft portion 210, and the first shaft portion 110 and the second shaft portion 210 are coaxially arranged, so that the first stirring blade 100 and the second stirring blade 200 coaxially rotate at different heights.

And, a reduction gear transmission assembly 300 is disposed between the first shaft portion 110 and the second shaft portion 210, and when the first shaft portion 110 drives the first stirring blade 100 to rotate, the second shaft portion 210 is driven by the reduction gear transmission assembly 300 to drive the second stirring blade 200 to rotate at a low speed.

The first stirring blade 100 and the second stirring blade 200 are coaxial at different heights and rotate at different speeds to form strong vortex and differential shearing, so that the purpose of improving stirring performance is achieved.

Further, the second shaft portion 210 is internally formed with an inner sleeve hole, which can be understood as a hollow structure, and the first shaft portion 110 is installed through the inner sleeve hole of the second shaft portion 210 and both ends thereof extend out of the second shaft portion 210.

A first bearing 410 and a first seal ring 510 are disposed between the first shaft portion 110 and the second shaft portion 210 in the inner sleeve hole; the first bearing 410 can reduce friction during relative rotation of the first shaft portion 110 and the second shaft portion 210, and the first seal 510 can prevent liquid from entering the inner race hole.

Further, referring to fig. 5 and 6, the first stirring blade 100 is fixed on the top of the first shaft 110 by an upper fixing nut 120; the second stirring blade 200 is fixedly mounted on the top of the second shaft portion 210 through a lower fixing nut 220, the first stirring blade 100 is located above the second stirring blade 200, the first stirring blade 100 rotates at a high speed during stirring, and the second stirring blade 200 rotates at a low speed.

In one embodiment, the first stirring blade 100 is located in a high position and the second stirring blade 200 is located in a low position. Referring to fig. 6, the first stirring blade 100 is a four-blade, wherein the first blade and the third blade are inclined upward, the second blade and the fourth blade are inclined downward, and the angle between the blades and the horizontal plane is different, so that the food in the stirring cup can be more comprehensively stirred;

the first shaft portion 110 is a solid rotating shaft, and is made of a high-hardness metal material, the first stirring blade 100 is mounted at the upper end of the first shaft portion 110, the tail end of the first shaft portion 110 is connected with an upper connector 700, and biting teeth are arranged on the periphery of the upper connector 700; at least one of the first bearings 410 is provided on the first shaft portion 110.

Referring to fig. 3 and 5, the second stirring blade 200 is a two-blade, and the blade is horizontally disposed to better cooperate with the first stirring blade 100 to perform shearing stirring on the food material, so as to achieve better stirring effect.

In one embodiment, referring to fig. 3, the reduction gear transmission assembly 300 includes:

the gear outer ring 310 is provided with biting teeth 311 on the inner wall;

a sun gear 320 fixedly mounted on the first shaft portion 110 and rotating in synchronization with the first shaft portion 110;

a planetary gear 330 meshed between the gear outer ring 310 and the sun gear 320;

the diameter D1 of the sun gear 320 is smaller than the diameter D2 of the planet gears 330, so that the purpose of speed reduction is achieved;

driven by the sun gear 320, the planetary gear 330 revolves around the sun gear 320 while rotating inside the gear outer ring 310;

the second shaft 210 rotates through the planetary gear 330.

Further, in the mixer, a base is generally disposed at the bottom of the mixing cup, and the base may be used as a tool holder for mounting a tool, while in this embodiment, the gear outer ring 310 and the gear box bottom cover 600 are fixedly mounted to form a gear box, the gear outer ring 310 and the gear box bottom cover 600 may be fixedly mounted by means of a buckle, an upper screw, or the like, and a receiving space is formed inside after mounting, and the sun gear 320, the planetary gear 330, and the like are all mounted in the receiving space.

The gear box forms the base of the stirring cup.

In other embodiments, it is also possible that the stirring cup further has a base having an upper cover and a lower cover, and the entire reduction gear transmission assembly 300 is mounted in the space inside the base, but by adopting the method of the present embodiment, structural members can be saved, and the structure is made more compact.

A third sealing ring 530 is disposed between the gear outer ring 310 and the gear case bottom cover 600 to prevent the receiving space from being polluted.

Both ends of the first shaft 110 penetrate the receiving space, and penetrate from the bottom of the gear case bottom cover 600 to be connected with an upper connector 700.

Referring to fig. 4 and 5, the number of the planetary gears 330 is three, and the planetary gears 330 are uniformly distributed in the outer gear ring 310, and are operated to drive the sun gear 320 to rotate by the first shaft 110, so as to drive the planetary gears 330 to rotate, and the planetary gears 330 rotate under the driving of the sun gear 320 and revolve around the sun gear 320, so as to drive the second shaft 210 to rotate.

The number of the planetary gears 330 may be increased or decreased, for example, four planetary gears 330 may be provided, and the number of the planetary gears 330 may be three, mainly for smoothly transmitting power to the second shaft portion 210 during the rotation process, so as to drive the second stirring blade 200 to smoothly rotate.

Further, referring to fig. 3 and 5, the reduction gear assembly 300 further includes a planetary gear carrier 340, and the planetary gear carrier 340 mainly connects the planetary gears 330 and the second shaft portion 210.

Alternatively, the second shaft 210 may be integrally formed with the planetary gear carrier 340, or may be subsequently attached to the planetary gear carrier 340, with the second shaft 210 being located at the center of the planetary gear carrier 340 and protruding upward

Further, the planetary gear carrier 340 is in limited connection with the planetary gear 330 through a rotating shaft 331; therefore, when the planetary gear 330 revolves, the planetary gear carrier 340 is driven to rotate, so as to realize the rotation of the second shaft portion 210.

Further, as shown in fig. 3, a sleeve 312 is formed at the center of the gear outer ring 310, and the second shaft portion 210 extends upward through the sleeve 312; a second bearing 420 and a second sealing ring 520 are arranged between the second shaft portion 210 and the sleeve 312, so as to achieve the functions of reducing friction and sealing to prevent pollution.

Further, in the above-described specific structure of the reduction gear transmission assembly 300, after the first shaft portion 110 and the second shaft portion 210 are reduced in speed by the reduction gear transmission assembly 300, the first shaft portion 110 and the second shaft portion 21 rotate in the same direction, that is, the first stirring blade 100 and the second stirring blade 200 rotate in the same direction;

in other embodiments, the transmission modes among the planetary gear 330, the sun gear 320 and the gear outer ring 310 can be slightly modified correspondingly, so that the first shaft portion 110 and the second shaft portion 210 rotate reversely, namely, the first stirring blade 100 and the second stirring blade 200 rotate reversely;

preferably, the first shaft portion 110 and the second shaft portion 21 rotate in the same direction for better use.

The use of a double layer stirring blade is further described below:

after the upper connector 700 is connected with the lower connector 820 of the main machine, the motor in the main machine drives the upper connector 700 to rotate, and the upper connector 700 drives the first shaft part 110 to enable the first stirring blade 100 to rotate at a high speed;

at the same time, the first shaft 110 drives the planetary gear 330 through the sun gear 320, and the planetary gear 330 revolves to drive the second shaft 210 to rotate, so that the second stirring blade 200 rotates at a low speed.

Example 2:

the double-layer stirring blade of example 1 was applied to a stirrer, as shown in fig. 7 to 10, comprising: the stirring cup 900 comprises a main machine 800 and a stirring cup 900, wherein a double-layer stirring cutter is arranged in the stirring cup 900, a gear box bottom cover 600 in the double-layer stirring cutter is a base of the stirring cup, and the bottom of the stirring cup 900 is sealed.

Referring to fig. 10, in order to achieve stable installation of the double-layer stirring blade in the stirring cup and rapid removal for cleaning, a gear box bottom cover 600 of the double-layer stirring blade is installed at the bottom of the stirring cup 900 in a rotary lock manner. The inner wall of the bottom of the stirring cup 900 is provided with a clamping protrusion 901, the gear box is correspondingly provided with a clamping groove 601, when the stirring cup is installed, a double-layer stirring knife is installed from the bottom of the stirring cup 900, then the gear box is rotated in the forward direction, and the stirring cup is stably installed by matching the clamping protrusion 901 with the clamping groove 601; when the double-layer stirring knife is detached, the gear box is reversely rotated, the clamping convex 901 is separated from the clamping groove 601, and the double-layer stirring knife is taken out.

Further, in order to realize stable placement of the stirring cup 900 on the main machine 800, a positioning groove 610 is provided at the bottom of the gear case bottom cover 600; the main machine 800 is provided with a position 810 where the stirring cup 900 is correspondingly assembled, and a lower connector 820 and a positioning rib 830 are arranged at the position 810; a motor is arranged in the main machine 800, an output shaft of the motor is connected with a lower connector 820, and after the stirring cup 900 is placed in the main machine 800, the positioning groove 610 is correspondingly matched with the positioning rib 830 and is stably installed; the lower connector 820 is correspondingly connected with the upper connector 700 in a meshed manner, and the first shaft portion 110 is driven by a motor to rotate through the lower connector 820 and the upper connector 700, so that the first stirring blade 100 and the second stirring blade 200 can coaxially rotate at different heights and different rotation speeds, and food is stirred.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. Double-deck stirring sword, its characterized in that includes:

a first stirring blade (100) mounted on the first shaft portion (110);

a second stirring blade (200) mounted on the second shaft portion (210);

the first shaft part (110) and the second shaft part (210) are coaxially arranged, so that the first stirring blade (100) and the second stirring blade (200) coaxially rotate at different heights, and the stirring device is characterized in that:

a reduction gear transmission assembly (300) is arranged between the first shaft part (110) and the second shaft part (210), and the second shaft part (210) is driven to rotate through the reduction gear transmission assembly (300) when the first shaft part (110) rotates, so that the first stirring blade (100) and the second stirring blade (200) coaxially rotate at different speeds.

2. The double-layer stirring blade according to claim 1, wherein: the reduction gear transmission assembly (300) includes:

the gear outer ring (310) is provided with biting teeth (311) on the inner wall;

a sun gear (320) fixedly mounted on the first shaft portion (110) and rotating in synchronization with the first shaft portion (110);

a planetary gear (330) meshed between the gear outer ring (310) and the sun gear (320);

under the drive of the sun gear (320), the planetary gear (330) revolves around the sun gear (320) in the gear outer ring (310);

the second shaft part (210) is driven to rotate through a planetary gear (330).

3. The double-layer stirring blade according to claim 2, wherein: the gear outer ring (310) is fixedly arranged on a gear box bottom cover (600) to form a gear box; an accommodating space is formed between the gear outer ring (310) and the gear box bottom cover (600); a third sealing ring (530) is arranged between the gear outer ring (310) and the gear box bottom cover (600);

a sleeve body (312) is formed at the center of the gear outer ring (310), the second shaft portion (210) penetrates through the sleeve body (312) to extend upwards, and the second stirring cutter (200) is fixedly mounted at the top of the second shaft portion (210) through a lower fixing nut (220).

4. A double-layer stirring blade according to claim 3, wherein: an inner sleeve hole is formed in the second shaft part (210), the first shaft part (110) penetrates through the inner sleeve hole of the second shaft part (210) to be installed, and a first bearing (410) and a first sealing ring (510) are arranged between the first shaft part (110) and the second shaft part (210); a second bearing (420) and a second sealing ring (520) are arranged between the second shaft part (210) and the sleeve body (312).

5. The double-layer stirring blade according to claim 2, wherein: the planetary gear carrier (340) is in limit connection with the planetary gear (330) through a rotating shaft (331); the second shaft portion (210) is provided at the center of the planetary gear carrier (340) and protrudes upward.

6. The double-layer stirring blade according to claim 1, wherein: the first shaft part (110) penetrates through the gear box bottom cover (600) to extend downwards, and an upper connector (700) is arranged at the tail end of the first shaft part (110); the first stirring blade (100) is fixed to the upper end of the first shaft portion (110) by an upper fixing nut (120).

7. The double-layer stirring blade according to claim 1, wherein: after the first shaft part (110) and the second shaft part (210) are subjected to speed reduction transmission through a speed reduction gear transmission assembly (300), the first shaft part (110) and the second shaft part (210) rotate in the same direction; or (b)

The first shaft part (110) and the second shaft part (210) rotate reversely after the first shaft part (110) and the second shaft part (210) are in speed reduction transmission through a speed reduction gear transmission assembly (300).

8. Mixer, its characterized in that includes: a main unit (800) and a stirring cup (900), wherein the stirring cup (900) is provided with the double-layer stirring blade according to any one of claims 1 to 7.

9. The blender of claim 8 wherein: the gear box of the double-layer stirring blade is arranged at the bottom of the stirring cup (900) in a rotary lock catch mode, and a positioning groove (610) is formed in the bottom of the gear box;

the main machine (800) is provided with a position (810) where the stirring cup (900) is correspondingly assembled, and the position (810) is provided with a lower connector (820) and a positioning rib (830);

after the stirring cup (900) is placed on the main machine (800), the lower connector (820) is correspondingly connected with the upper connector (700) in a meshed mode; the positioning groove (610) is correspondingly matched with the positioning rib (830).

10. The blender of claim 9 wherein: a motor is arranged in the host (800), and drives the lower connector (820) to rotate, so as to drive the upper connector (700).