CN115281542A

CN115281542A - Handheld stirrer

Info

Publication number: CN115281542A
Application number: CN202210884140.4A
Authority: CN
Inventors: 谢树波; 胡和平; 戴芳胜
Original assignee: Ningbo Borine Electric Appliance Co Ltd
Current assignee: Ningbo Borine Electric Appliance Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-04

Abstract

The invention relates to the field of food processors and discloses a hand-held mixer which is characterized by comprising a main machine mechanism, a shell and a pipe body connected with the shell, wherein a sleeve is clamped with a transmission part, so that when a shell is separated from the shell, the sleeve is separated from the transmission part, the main machine mechanism can be connected with other output structures, such as an eggbeater and the like, the rotating speed of a motor is adjusted through a control part, the rotating speed requirements of different output structures are met, a spiral groove is arranged outside the sleeve, the sleeve is arranged in the pipe body, the length of the sleeve can be designed according to needs, the lifting distance range of a shaft body is expanded, the shaft body is lifted while rotating, the cutting range of a blade is expanded, the upper frame and the lower frame are in a tubular shape, the smoothness of the outer surfaces of the upper frame and the lower frame can be maintained, the upper frame and the lower frame do not need to be overlapped, and the thickness is reduced.

Description

Hand-held mixer

Technical Field

The invention relates to the field of food processors, in particular to a hand-held stirrer.

Background

The food processor comprises a hand-held mixer which is mainly used for cutting or mixing food and the like, and is internally provided with a main machine mechanism, a transmission mechanism, a blade and a shaft body, wherein the top of the shaft body is detachably connected with the blade, the main machine mechanism drives the shaft body to rotate through the transmission mechanism, and the food is processed through the blade;

the blade position when current hand-held mixer stirs food is fixed unchangeable, and the scope of cutting or stirring food is less when carrying out food processing, and machining efficiency is not high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a hand-held mixer, which can realize the reciprocating cutting of food by ascending and descending while rotating a blade, increase the cutting area and improve the cutting efficiency.

In order to realize the purpose, the invention provides the following technical scheme: a hand-held mixer comprises a main machine mechanism, a shell and a pipe body connected with the shell, wherein a transmission part, a shaft body and a transmission mechanism are arranged in the shell, the transmission part is connected with the shaft body in a sliding manner, a lifting mechanism is arranged in the pipe body, the lifting mechanism comprises a limiting part and a sleeve which is rotatably connected onto the shaft body, an end-to-end spiral groove is formed in the outer side surface of the sleeve, the limiting part is rotatably connected into the pipe body and slides in the spiral groove, the transmission mechanism comprises a transmission part and a lower gear ring, the shaft body penetrates through the lower gear ring, the lower gear ring is fixedly connected with the sleeve, when the mixer works, the main machine mechanism drives the shaft body and the lower gear ring to rotate through the transmission part, so that the shaft body rotates and reciprocates and moves up and down, and a rotation speed difference exists between the shaft body and the lower gear ring;

the host mechanism comprises a shell, a motor and a control part, wherein the control part is used for controlling the rotating speed of the motor, the shell is detachably connected with the shell, an output shaft of the motor is fixedly connected with a kit, and the kit is connected with the transmission part in a clamping mode.

As a further improvement of the present invention, a through hole is formed in the driving member, a plurality of sliding grooves are formed on an inner side surface of the through hole, a plurality of protruding strips are integrally formed on an outer side surface of the shaft body, and the protruding strips slide in the corresponding sliding grooves.

As a further improvement of the present invention, the transmission portion includes an upper gear ring, a frame body, and a rotating member, the upper gear ring is fixedly connected with the housing, the rotating member is rotatably connected to the frame body, the rotating member includes an upper gear ring and a lower gear ring, the upper gear ring is engaged with the upper gear ring and the transmission member, the lower gear ring is engaged with the lower gear ring, a ring is disposed between the upper gear ring and the lower gear ring, and a part of the ring is located in a gap formed between the upper gear ring and the lower gear ring.

As a further improvement of the invention, the rack body comprises an upper disk and a lower disk, the upper disk and the lower disk are fixedly connected, and the rotating part is rotatably connected between the upper disk and the lower disk.

As a further improvement of the present invention, there is a difference in the number of teeth between the upper ring gear and the lower ring gear.

As a further improvement of the present invention, an upper frame is fixedly connected inside the pipe body, a lower frame is fixedly connected to the bottom of the upper frame, a first semicircular hole is formed in the bottom of the upper frame, a second semicircular hole is formed in the top of the lower frame, a connection hole is formed between the first semicircular hole and the second semicircular hole, and the limiting member is rotatably connected in the connection hole.

As a further improvement of the present invention, the spiral groove includes a first spiral section and a second spiral section, the first spiral section and the second spiral section intersect with each other, and the top of the first spiral section is connected to the top of the second spiral section, and the tail of the first spiral section is connected to the tail of the second spiral section.

As a further improvement of the present invention, an upper positioning element and a lower positioning element are fixedly connected to the shaft body, the sleeve is movably connected between the upper positioning element and the lower positioning element, the sleeve includes a connecting section and a lifting section, the cross section of the connecting section is polygonal, a polygonal hole is formed on the lower gear ring, the connecting section is embedded with the polygonal hole, the cross section of the lifting section is circular, and the spiral groove is formed on the outer side surface of the lifting section.

As a further improvement of the present invention, the control portion includes a PCB and a potentiometer, the potentiometer is electrically connected to the PCB, and the PCB is electrically connected to the motor.

As a further improvement of the present invention, a groove is formed in the kit, a plurality of positioning grooves are formed in the groove, the plurality of positioning grooves are uniformly distributed along the circumferential direction of the shaft body, a plurality of positioning strips are integrally formed on the outer side surface of the driving member, the plurality of positioning strips are uniformly distributed along the circumferential direction of the shaft body, and the positioning strips are inserted into the corresponding positioning grooves.

The invention has the beneficial effects that: according to the invention, the external member is clamped with the transmission member, so that when the shell is separated from the shell, the external member is separated from the transmission member, the host mechanism can be connected with other output structures, such as an eggbeater and the like, the rotating speed of the motor is adjusted through the control part, and the rotating speed requirements of different output structures are met; and after the dismouting between host computer mechanism and the casing, be convenient for wash blade, casing etc. prevent that water from getting into host computer mechanism, do harm motor etc. set up the helicla flute outside the sleeve pipe, and set up the sleeve pipe in the body, make sheathed tube length design as required, enlarge the lift distance scope of axis body, and when having realized the axis body pivoted, go up and down, enlarged the scope that the blade can cut, install through inserted bar and jack interference fit's mode in addition, reduce the use of standard components such as bolt, put on the shelf and undercarriage also are the tubulose, can maintain the smoothness of put on the shelf and undercarriage surface, and make and need not to overlap between put on the shelf and the undercarriage, reduce thickness.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the structure at the control section in the present invention;

FIG. 3 is a schematic view of the removable connection of the housing to the housing of the present invention;

FIG. 4 is a schematic view of the removable connection of the housing to the shell of the present invention;

FIG. 5 is a schematic view of the construction of the kit of the present invention;

FIG. 6 is a perspective view of the case of the present invention

FIG. 7 is a cross-sectional view of the invention of FIG. 6;

FIG. 8 is an enlarged schematic view at A of FIG. 7 of the present invention;

FIG. 9 is a schematic view of the structure at the lower ring gear in the present invention;

FIG. 10 is a schematic view of the structure of a transmission member of the present invention;

FIG. 11 is a schematic view of the rotor of the present invention;

FIG. 12 is a schematic view of the structure at the spiral groove in the present invention;

FIG. 13 is a schematic view of the structure at the sleeve of the present invention;

fig. 14 is a schematic structural view of the frame body of the present invention.

Reference numerals: 11. a housing; 12. a motor; 13. a control unit; 131. a PCB board; 132. a potentiometer; 14. a kit; 141. a groove; 142. positioning a groove; 1. a housing; 2. a pipe body; 21. putting on a shelf; 211. a first semicircular hole; 22. putting down the shelf; 221. a second semicircular hole; 23. an upper positioning member; 24. a lower positioning member; 3. a transmission member; 31. a through hole; 32. a chute; 33. a positioning bar; 4. a shaft body; 41. a convex strip; 51. a transmission part; 511. an upper gear ring; 512. a frame body; 513. a rotating member; 52. a lower gear ring; 53. a circular ring; 61. a limiting member; 62. a sleeve; 621. a connecting section; 622. a lifting section; 7. a helical groove; 71. a first helical section; 72. a second helical segment.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front", "back", "left", "right", "upper" and "lower" refer to directions in the drawings, and the terms "bottom" and "top", "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 14, the hand-held mixer of the present embodiment includes a main machine mechanism, a housing 1 and a pipe body 2 connected to the housing 1, the housing 1 and the pipe body 2 are connected in a snap-fit manner, a transmission member 3, a shaft body 4 and a transmission mechanism are disposed in the housing 1, the transmission member 3 and the shaft body 4 are connected in a sliding manner, a lifting mechanism is disposed in the pipe body 2, the lifting mechanism includes a limiting member 61 and a sleeve 62 rotatably connected to the shaft body 4, an end-to-end spiral groove 7 is disposed on an outer side surface of the sleeve 62, and the limiting member 61 is rotatably connected to the inside of the pipe body 2 and slides in the spiral groove 7;

referring to fig. 13, the limiting member 61 includes a cylindrical head and an arc-shaped body fixedly connected to the cylindrical head, the cylindrical head is rotatably connected to the sleeve 62, and the arc-shaped body slides in the spiral groove 7, so that the arc-shaped body can change a sliding direction of the arc-shaped body in the spiral groove 7 along a direction of the spiral groove 7;

the spiral groove 7 is arranged outside the sleeve 62, and the sleeve 62 is arranged in the tube body 2, so that the length of the sleeve 62 can be designed as required, and the lifting distance range of the shaft body 4 is enlarged.

The transmission mechanism comprises a transmission part 51 and a lower gear ring 52, the shaft body 4 passes through the lower gear ring 52, and the lower gear ring 52 is fixedly connected with the sleeve 62, so that when the lower gear ring 52 rotates, the sleeve 62 can be driven to rotate;

when the main machine mechanism works, the main machine mechanism drives the shaft body 4 and the lower gear ring 52 to rotate through the transmission piece 3, so that the shaft body 4 rotates and reciprocates simultaneously, a rotation speed difference exists between the shaft body 4 and the lower gear ring 52, a rotation speed difference exists between the sleeve 62 and the shaft body 4, and the position of the limiting piece 61 in the spiral groove 7 is continuously changed due to the rotation speed difference, so that the shaft body 4 can be driven to reciprocate;

the host mechanism comprises a shell 11, a motor 12 and a control part 13, wherein the control part 13 is used for controlling the rotating speed of the motor 12, and the shell 11 is detachably connected with the shell 1;

the outer side surface of the shell 11 is provided with two clamping grooves which are oppositely arranged, the outer side surface of the shell 11 is fixedly connected with an L-shaped piece, the clamping grooves are formed in the L-shaped piece, the inner side of the shell 1 is fixedly connected with a clamping piece which is arc-shaped, an embedding groove is formed in the L-shaped piece, and a protrusion is arranged on one side of the embedding groove, so that one end of the clamping piece can be partially embedded into the embedding groove and cross the protrusion, and the clamping piece can be separated from the embedding groove only by the rotation of external force;

in addition, an elastic hole is formed below the L-shaped piece, an elastic piece is fixedly connected to one side of the elastic hole and comprises a fixed end and a movable end, the elastic piece and the shell 11 are integrally formed, a convex circle is arranged on the outer side face of the movable end, a transverse plate is fixedly connected to the lower portion of the clamping piece, a concave circle is formed in the transverse plate, the convex circle can be embedded into the concave circle to form fixation, and when the elastic piece is separated from the shell, the elastic piece also needs to rotate due to external force and is matched with the L-shaped piece and the protrusion to jointly form detachable connection between the shell 11 and the shell 1;

the external member 14 is fixedly connected to the output shaft of the motor 12, and the external member 14 is clamped with the transmission member 3, so that when the shell 11 is separated from the casing 1, the external member 14 is separated from the transmission member 3, and the main machine mechanism can be connected with other output structures, such as an eggbeater, and the rotating speed of the motor 12 is adjusted through the control part 13, so that the rotating speed requirements of different output structures are met; and after the assembly and disassembly, the blade, the shell 1 and the like can be conveniently cleaned, and water is prevented from entering the main machine mechanism to damage the motor 12 and the like.

Referring to fig. 5, seted up recess 141 in the external member 14, seted up a plurality of constant head tank 142 in the recess 141, a plurality of constant head tank 142 are along the circumference evenly distributed of axis body 4, 3 lateral surface integrated into one piece of driving medium have a plurality of location strip 33, a plurality of location strip 33 are along the circumference evenly distributed of axis body 4, location strip 33 inserts in the constant head tank 142 that corresponds, form being connected between driving medium 33 and the external member 14, the vertical setting of location strip, the circumference evenly distributed of axis body 4 is followed to a plurality of location strips, the connected mode is convenient, be convenient for the dismouting, can be supporting with multiple output structure through the external member 14.

Referring to fig. 2, the control portion 13 includes a PCB 131 and a potentiometer 132, the potentiometer 132 is electrically connected to the PCB 131, the PCB 131 is electrically connected to the motor 12, a rotating member is disposed on the top of the housing 11, the rotating member is connected to an input end of the potentiometer 132, a user rotates the rotating member to change a resistance of the potentiometer 132, so as to adjust a voltage input to the motor 12 to control a rotation speed of the motor 12, and an on-off key is further disposed on the housing 11 to control an on-off state of the hand mixer.

Referring to fig. 8 and fig. 13, through-hole 31 has been seted up in driving medium 3, through-hole 31 runs through whole driving medium 3, make axis body 4 can follow the depth direction removal of whole through-hole 31, can be according to the needs of difference, set for the height of driving medium 3, thereby set for the through-hole 31 of the different degree of depth, make the lift distance of axis body 4 expand, a plurality of spouts 32 have been seted up to through-hole 31 medial surface, 4 lateral surface integrated into one piece of axis body has a plurality of sand grips 41, sand grip 41 slides in corresponding spout 32, can make axis body 4 realize sliding on the one hand, go up and down promptly, on the other hand can drive axis body 4 when making driving medium 3 pivoted and rotate.

Referring to fig. 8, the transmission part 51 includes an upper gear ring 511, a frame body 512, and a rotating member 513, the upper gear ring 511 is fixedly connected with the housing 1, the rotating member 513 is rotatably connected to the frame body 512, the rotating member 513 includes an upper gear ring and a lower gear ring, the upper gear ring is engaged with the upper gear ring 511 and the transmission member 3, the outer side surface of the transmission member 3 is provided with a gear surface, the lower gear ring is engaged with the lower gear ring 52, a circular ring 53 is arranged between the upper gear ring and the lower gear ring, and a part of the circular ring 53 is located in a gap formed by the upper gear ring 511 and the lower gear ring 52;

due to the fixed connection of the upper gear ring 511, the rotating member 513 rotates around the shaft body 4 while being driven by the driving member 3 to rotate, i.e. the rotation and revolution are performed simultaneously, and the lower gear ring 52 is driven to rotate due to the revolution and the rotation speed difference of the rotating member 513.

The inner side surfaces of the upper gear ring 511 and the lower gear ring 52 are both provided with tooth surfaces, the tooth numbers of the tooth surfaces are different, so that a tooth number difference exists, and a tooth number difference exists between the upper gear ring and the lower gear ring, so that the rotating speed of the lower gear ring 52 is different from that of the shaft body 4 integrally, namely the rotating speed of the lower gear ring 52 is different from that of the transmission member 3;

a gap is formed between the upper gear ring 511 and the lower gear ring 52, that is, a space is formed between the upper gear ring 511 and the lower gear ring 52, and during the rotation of the rotating member 513, a part of the ring 53 is always located in the gap, so that the space in which the ring 53 moves up and down is defined, and thus the space in which the rotating member 513 moves up and down is defined, and therefore, the frame body 512 does not need to be connected through a bearing, the installation of the frame body 512 can be realized, and the frame body 512 rotates along with the rotation of the rotating member 513.

As shown in fig. 11, 12 and 14, the rotation member 513 is provided in three numbers and is uniformly distributed along the circumferential direction of the shaft body 4, so that the revolution and rotation of the rotation member 513 are more stable.

Referring to fig. 9, the frame 512 includes an upper plate and a lower plate, the upper plate and the lower plate are fixedly connected to each other, the rotating member 513 is rotatably connected between the upper plate and the lower plate, and the upper plate and the lower plate are fixed to each other by a standard member such as a bolt, so as to limit a distance between the upper plate and the lower plate.

Referring to fig. 12, an upper frame 21 is fixedly connected inside the pipe body 2, a lower frame 22 is fixedly connected to the bottom of the upper frame 21, a jack is formed in the bottom of the upper frame 21, an insert rod is fixedly connected to the top of the lower frame 22, the upper frame 21 and the lower frame 22 are installed in an interference fit mode through the insert rod and the jack, the use of standard parts such as bolts is reduced, the upper frame 21 and the lower frame 22 are also tubular, the smoothness of the outer surfaces of the upper frame 21 and the lower frame 22 can be maintained, the upper frame 21 and the lower frame 22 do not need to be overlapped, and the thickness is reduced;

first semicircle hole 211 has been seted up to upper bracket 21 bottom, and second semicircle hole 221 has been seted up at lower carriage 22 top, and first semicircle hole 211 forms the connecting hole with second semicircle hole 221, and locating part 61 rotates to be connected in the connecting hole, can come fixed bearing through first semicircle hole 211 and second semicircle hole 221, connects locating part 61 through the bearing.

Referring to fig. 13, the spiral groove 7 includes a first spiral section 71 and a second spiral section 72, the first spiral section 71 and the second spiral section 72 intersect with each other, the top of the first spiral section 71 is connected to the top of the second spiral section 72, and the tail of the first spiral section 71 is connected to the tail of the second spiral section 72, when the stopper 61 moves from the tail of the first spiral section 71, moves to the top of the first spiral section 71 along the setting direction, then moves from the top of the first spiral section 71 to the top of the second spiral section 72, moves to the tail of the second spiral section 72 along the setting direction, and then enters the tail of the first spiral section 71, and the above-mentioned processes are repeated to realize the reciprocating up and down of the sleeve 62, thereby realizing the reciprocating up and down of the shaft body 4.

Referring to fig. 8, the shaft body 4 is fixedly connected with the upper positioning element 23 and the lower positioning element 24, and the sleeve 62 is movably connected between the upper positioning element 23 and the lower positioning element 24, so that the installation manner of the sleeve 62 is simplified, the use of standard components such as bearings is reduced, the gap between the shaft body 4 and the sleeve 62 is smaller, the outer diameter of the pipe body 2 is reduced, and the overall size of the handheld food processor is smaller.

Referring to fig. 13, the sleeve 62 includes a connecting section 621 and a lifting section 622, the cross section of the connecting section 621 is polygonal, a polygonal hole is opened on the lower ring gear 52, the connecting section 621 is engaged with the polygonal hole, the lower toothed disc rotates to drive the sleeve 62 to rotate by setting the cross section of the connecting section 621 to be polygonal, and due to the existence of the upper positioning element 23 and the lower positioning element 24, the sleeve 62 is always embedded in the polygonal hole when moving between the upper positioning element 23 and the lower positioning element 24, and no parts such as bearings need to be installed, so that the installation mode is simplified, the sleeve 62 is installed between the upper positioning element 23 and the lower positioning element 24, an installation error can exist, the outer diameter size of the sleeve 62 due to the need of bearings is reduced, and the outer diameter of the integral tube body 2 is reduced.

The cross section of the lifting section 622 is circular, and the spiral groove 7 is formed in the outer side face of the lifting section 622, so that the spiral groove 7 can be conveniently arranged.

The working principle is as follows: in operation, motor 12 is connected with driving medium 3 through its epaxial external member 14, make to drive driving medium 3 and rotate, driving medium 3 is through meshing with last ring gear, thereby it rotates to drive rotation piece 513, make rotation piece 513 rotation, because of last ring gear and last ring gear 511 mesh, it is fixed in on casing 1 to go up ring gear 511, therefore, rotation piece 513 revolves around axis body 4, and because of there is the tooth number difference between last ring gear and the lower ring gear, can drive ring gear 52 down and rotate, thereby it rotates to drive sleeve 62, make locating part 61 slide in helicla flute 7, drive 4 reciprocating up-and-down motion of axis body, body 2 is extended to the bottom of axis body 4, and fixedly connected with blade, cut the processing to food through the blade.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a hand held mixer which characterized in that: the lifting mechanism comprises a host mechanism, a shell (1) and a pipe body (2) connected with the shell (1), wherein a transmission part (3), a shaft body (4) and a transmission mechanism are arranged in the shell (1), the transmission part (3) is in sliding connection with the shaft body (4), a lifting mechanism is arranged in the pipe body (2), the lifting mechanism comprises a limiting part (61) and a sleeve (62) which is rotationally connected with the shaft body (4), an end-to-end spiral groove (7) is formed in the outer side surface of the sleeve (62), the limiting part (61) is rotationally connected in the pipe body (2) and slides in the spiral groove (7), the transmission mechanism comprises a transmission part (51) and a lower gear ring (52), the shaft body (4) penetrates through the lower gear ring (52), the lower gear ring (52) is fixedly connected with the sleeve (62), and during work, the host mechanism drives the shaft body (4) and the lower gear ring (52) to rotate so that the shaft body (4) rotates and reciprocates, and a rotation speed difference exists between the shaft body (4) and the lower gear ring (52);

host computer mechanism includes shell (11), motor (12) and control part (13), control part (13) are used for control the rotational speed of motor (12), shell (11) with casing (1) can be dismantled and be connected, fixedly connected with external member (14) on the output shaft of motor (12), external member (14) with driving medium (3) joint.

2. A hand mixer as claimed in claim 1, wherein: a through hole (31) is formed in the transmission piece (3), a plurality of sliding grooves (32) are formed in the inner side face of the through hole (31), a plurality of protruding strips (41) are integrally formed on the outer side face of the shaft body (4), and the protruding strips (41) slide in the corresponding sliding grooves (32).

3. A hand mixer according to any one of claims 1 or 2, wherein: the transmission part (51) comprises an upper gear ring (511), a frame body (512) and a rotating part (513), the upper gear ring (511) is fixedly connected with the shell body (1), the rotating part (513) is rotatably connected onto the frame body (512), the rotating part (513) comprises an upper gear ring and a lower gear ring, the upper gear ring is meshed with the upper gear ring (511) and the transmission part (3), the lower gear ring is meshed with the lower gear ring (52), a circular ring (53) is arranged between the upper gear ring and the lower gear ring, and part of the circular ring (53) is located in a gap formed by the upper gear ring (511) and the lower gear ring (52).

4. A hand mixer as claimed in claim 3 wherein: the support body (512) comprises an upper disc and a lower disc, the upper disc is fixedly connected with the lower disc, and the rotating part (513) is rotatably connected between the upper disc and the lower disc.

5. A hand mixer as claimed in claim 3, wherein: and a tooth number difference exists between the upper gear ring and the lower gear ring.

6. A hand mixer as claimed in claim 3, wherein: fixedly connected with upper bracket (21) in body (2), upper bracket (21) bottom fixedly connected with undercarriage (22), first semicircle hole (211) has been seted up to upper bracket (21) bottom, second semicircle hole (221) has been seted up at undercarriage (22) top, first semicircle hole (211) with second semicircle hole (221) form the connecting hole, locating part (61) rotate connect in the connecting hole.

7. A hand mixer as claimed in claim 3 wherein: the spiral groove (7) comprises a first spiral section (71) and a second spiral section (72), the first spiral section (71) and the second spiral section (72) are mutually crossed, the top of the first spiral section (71) is connected with the top of the second spiral section (72), and the tail of the first spiral section (71) is connected with the tail of the second spiral section (72).

8. A hand mixer as claimed in claim 3, wherein: an upper positioning piece (23) and a lower positioning piece (24) are fixedly connected to the shaft body (4), the sleeve (62) is movably connected between the upper positioning piece (23) and the lower positioning piece (24), the sleeve (62) comprises a connecting section (621) and a lifting section (622), the cross section of the connecting section (621) is in a polygonal shape, a polygonal hole is formed in the lower gear ring (52), the connecting section (621) is embedded with the polygonal hole, the cross section of the lifting section (622) is circular, and the spiral groove (7) is formed in the outer side face of the lifting section (622).

9. A hand mixer as claimed in claim 3, wherein: the control part (13) comprises a PCB (131) and a potentiometer (132), the potentiometer (132) is electrically connected with the PCB (131), and the PCB (131) is electrically connected with the motor (12).

10. A hand mixer as claimed in claim 3, wherein: set (14) interior recess (141) of having seted up, seted up a plurality of constant head tank (142) in recess (141), it is a plurality of constant head tank (142) are followed the circumference evenly distributed of axis body (4), driving medium (3) lateral surface integrated into one piece has a plurality of location strip (33), and is a plurality of location strip (33) are followed the circumference evenly distributed of axis body (4), location strip (33) insert correspond in constant head tank (142).