CN215305240U - Dough kneading piece and dough kneading machine using same - Google Patents

Abstract

The utility model relates to the technical field of household appliances, and discloses a dough kneading piece and a dough kneading machine using the same. This application has optimized the cooperation structure with face spare installation site, and increase lifting surface area reduces the conquassation risk, promotes the user and uses experience.

Description

Dough kneading piece and dough kneading machine using same

Technical Field

The utility model relates to the technical field of household appliances, in particular to a dough kneading piece and a dough kneading machine using the same.

Background

The household dough kneading machine in the current market finishes dough kneading operation and is mainly realized by driving a dough kneading piece to rotate by a motor; the dough kneading piece rotates and realizes the transmission through linking with the transmission shaft, general dough kneading machine dough kneading piece adopts the cooperation of D type with the transmission shaft cooperation mode, these two kinds of cooperation modes of flat position cooperation, processing is simple, the accessory is with low costs, but dough kneading machine during operation dough kneading piece can receive the reaction force of dough, power passes through the edge and cooperates the plane transmission with dough kneading piece hole cooperation, the cooperation mode of transmission torque is line and face cooperation, the lifting surface area is little, there is the risk of cooperation department conquassation, the conquassation can lead to the transmission shaft dislocation, make dough kneading piece can't dismantle and take out, influence user and use experience, and pile up flour easily below the dough kneading piece, dough kneading machine difficult to abluent problem can appear with the dough kneading piece can't take out.

Disclosure of Invention

In order to solve one or more technical problems in the prior art or at least provide a beneficial choice, the utility model provides a dough kneading element and a dough mixer using the dough kneading element, which optimize the matching structure of the mounting part of the dough kneading element, reduce the crushing risk by increasing the stress area and improve the use experience of users.

The utility model provides a dough kneading piece which comprises an installation part, a stirring part and a connection part for connecting the installation part and the stirring part, wherein the installation part is provided with an installation hole, a matching plane is arranged in the installation hole, the installation hole is provided with a boss protruding in the radial direction, and the outer surface of the boss forms the matching plane.

The utility model provides a kneading dough spare will be kneaded dough through the installation department and install on the transmission shaft for kneading dough spare receives the drive of transmission shaft and rotates, and then material such as stirring portion drive flour and water mixes to be the dough, thereby the dough is kneading dough in the cup through the stirring portion with the flour-mixing machine and knead dough the continuous extrusion of cup inside wall and realize the effect of kneading dough. The utility model provides an installation department has the mounting hole that is used for installing and a piece, be equipped with the cooperation plane in the mounting hole, the transmission shaft is through this cooperation plane to a transmission moment of torsion of kneading dough, the mode of transmission moment of torsion is by the cooperation mode of line and face in the past, the improvement is the cooperation of face and face, the lifting surface area of mounting hole cooperation department has been increased, the conquassation risk of cooperation department because of the too big result in of atress, it is difficult to take out to lead to kneading dough the piece, thereby guarantee the normal dismantlement of kneading dough piece, convenient washing, user's use experience has been promoted. The mounting hole of this application is equipped with radial convex boss as the cooperation structure, forms the cooperation plane through the boss surface on the one hand, and on the other hand is convenient for carry out quick location installation.

In a preferred implementation of the face piece, the mating plane is formed at the periphery of the boss. The corresponding matching plane of the transmission shaft is also located on the circumferential direction, and further, in the transmission process of the mounting hole and the transmission shaft, force is transmitted through the circumferential matching plane.

In a preferred embodiment of the surface element, a projection extends axially along the mounting hole to form a mounting guide. The boss extends along the axial direction, so that the length of the matching plane in the axial direction is increased, the stress area of the matching plane is further increased, and the matching is more stable; meanwhile, in the installation process, the installation part of the dough kneading piece is installed downwards along the axial direction of the transmission shaft, and the axial matching plane has a guiding effect and is convenient to install.

In an implementation mode that the dough mixing piece is preferred, along the axial of mounting hole, have the clearance under the boss between terminal surface and the mounting hole terminal surface for form axial stair structure under the boss between the inner wall of terminal surface and mounting hole, further, in the transmission shaft installation, axial stair structure supports on the step hole of transmission shaft, realizes the support cooperation of spacing and the transmission in-process of axial, and the transmission is more stable, reduces the conquassation risk. Meanwhile, the boss structure of the dough kneading piece is higher than the lower end face of the mounting hole of the dough kneading piece, so that the problem that the bottom of the cup body is scratched by friction between the bottom surface of the dough kneading piece and the surface of the dough kneading cup in the working process of the dough kneading machine can be solved.

In a preferred implementation of the face-piece, the upper end of the mounting hole is provided with a flip-chip prevention limiting piece, so that the cross-sectional shape of the upper end of the mounting hole is smaller than that of the lower end of the mounting hole. The limiting pieces enable the upper end face and the lower end face to be different in shape, the upper end face and the lower end face are easy to distinguish by a user in the using process, and the anti-inversion can be realized; more importantly, locating part restriction flip-chip and face spare make and face spare unable flip-chip avoid the user to assemble the stirring sword in-process and prevent the risk that the anti-leading effect of kneading dough of stirring sword is poor, promote the user and use experience.

In a preferred realization mode of the dough kneading piece, a matching plane is formed on the shaft end face of the boss to form the matching plane, so that the surface support is realized between the shaft end face of the boss and the transmission shaft, and the axial limit of the dough kneading piece is realized. During the dough kneading process, the dough kneading piece receives dough acting force, and the bending deformation occurs at the joint of the inner wall of the dough kneading piece mounting hole and the outer side surface of the transmission shaft, so that when the stress is large, the outer side surface of the transmission shaft and the supporting surface simultaneously support the dough kneading piece, the structural strength of the dough kneading piece is increased, the failure risk of inclination or bending deformation is reduced, and the operation stability is improved.

In a preferred implementation of the face piece, the mounting hole is formed by a boss as a stepped hole having a stepped end face which can be axially abutted and fitted with the stepped shaft. The step end face and the axial butt of step axle head face through the step hole carry on spacingly, and the stair structure can improve the cooperation area moreover, strengthens the stability of transmission shaft.

In the preferred implementation of a dough piece, the boss encircles the setting along the mounting hole inner wall for the annular step terminal surface of boss lower extreme facial features form, thereby the dough piece atress is balanced in the axial, even receive the great reaction force of dough, also can not take place crooked, take out and wash after so that use.

The utility model also provides a dough kneading machine, which comprises a host machine, a dough kneading cup and the dough kneading piece, wherein the host machine is provided with a motor assembly, and the dough kneading piece is arranged in the dough kneading cup and is in transmission connection with the motor assembly. Due to the adoption of the dough kneading piece, the dough kneading piece of the dough kneading machine is stable in transmission, the matching part is not easy to crush, the disassembly, the assembly and the cleaning are convenient, and the use safety of the machine is ensured.

In a preferred implementation of the dough mixer, the dough kneading member is mounted on the transmission shaft, and a sealing member is arranged between the transmission shaft and the dough kneading cup, and the sealing member is provided with an axial lip and a circumferential lip. In the process of installation and matching, an installation gap exists between the dough kneading piece and the transmission shaft and between the dough kneading cup. In order to prevent to knead dough the in-process flour and water leakage and lead to the impaired problem of host computer, through the interference fit of the axial lip of sealing member and transmission shaft, through the interference fit between circumference lip and the cup of kneading dough, realize with the sealed effect of transmission shaft, the face body, promote the user and use experience and ensure machine safety in utilization.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a first schematic view of the assembly of a neutralization surface element and a transmission shaft according to an embodiment of the utility model.

Fig. 2 is a first structural diagram of a dough kneading member according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a neutralizing member in accordance with an embodiment of the present invention.

Fig. 4 is a first structural schematic diagram of a transmission shaft according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of a transmission shaft according to an embodiment of the utility model.

Fig. 6 is a second structural diagram of a dough kneading member according to an embodiment of the present invention.

Fig. 7 is a second schematic view of the mounting of the neutralization member and the transmission shaft according to an embodiment of the present invention.

Fig. 8 is an enlarged view of fig. 7 at a.

Fig. 9 is a third schematic structural diagram of a dough kneading member according to an embodiment of the present invention.

Fig. 10 is a second schematic structural diagram of a transmission shaft according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a dough mixer in an embodiment of the utility model.

Fig. 12 is a first schematic view of a transmission structure of a dough mixer according to an embodiment of the present invention.

Fig. 13 is a schematic view of a transmission structure of a dough mixer in an embodiment of the utility model.

Description of reference numerals:

1. kneading the dough piece; 11. an installation part; 12. a stirring section; 13. a connecting portion;

111. mounting holes; 112. a boss; 1121. a side plane of the boss; 1122. a first boss; 1123. a second boss; 113. a limiting member; 114. a fitting hole portion; 115. a step hole portion;

2. a drive shaft; 21. mounting grooves; 211. a groove side plane; 22. a mating shaft portion; 23. a stepped shaft portion;

3. a host; 31. a motor assembly; 32. a gasket; 33. a clamp spring; 34. a bearing;

4. a dough kneading cup; 41. a cup body; 42. a cup cover;

5. a seal member; 51. an axial lip; 52. a circumferential lip.

Detailed Description

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

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

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated 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 formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The specific scheme is as follows:

the first embodiment is as follows:

as shown in fig. 1 to 5, the present embodiment provides a dough kneading member 1 including a mounting portion 11, a stirring portion 12, and a connecting portion 13 connecting the mounting portion 11 and the stirring portion 12. In one embodiment, the mounting portion 11 has a cylindrical shape, a mounting hole 111 for fixing is provided in the middle portion, and the mounting hole 111 is a through hole. The connecting portion 23 extends along the outer periphery of the mounting portion 13, and is connected to the stirring portion 12 in a fan-blade shape. With a 1 will be with a 1 installation on transmission shaft 2 through installation department 11, the main drive engine during operation, transmission shaft 2 drives 1 circumferential direction with a, and then stirring portion 12 drives materials such as flour and water and forms the dough, thereby the dough is in the cup with a dough through with a 12 stirring portion of kneading dough and with the continuous extrusion realization of the cup inside wall with a dough effect.

Wherein, the mounting hole 111 has the cooperation plane in it, and mounting hole 111 is equipped with radial convex boss 112, and boss 112 surface forms the cooperation plane. In one embodiment, the boss 112 is a square column structure extending along the inside of the mounting hole 111, and has two boss side planes 1121, and accordingly, the transmission shaft 2 has a mounting groove 21 engaged with the boss 112, and the mounting groove 21 has two groove side planes 211. Wherein, the convex side plane 1121 forms a matching plane for transmission. The circumferential limit of the mounting part 11 and the transmission shaft 2 is realized through the mounting of the boss 112 and the mounting groove 21. The driving motor transmits to transmission shaft 2 through the spline link during the dough kneading machine work, the slot side plane 211 that the torque passes through transmission shaft 2 and the cooperation of the boss side plane 1121 on the dough kneading piece 1 transmit, because the dough kneading piece 1 can receive the reaction force of dough during the work, corresponding slot side plane 211 transmission on boss side plane 1121 and the transmission shaft 2 that the power passes through mounting hole 111, the mode of transmission moment of torsion is by the line with the cooperation mode of face, the improvement is the cooperation of face with the face, the lifting surface area of mounting hole 111 cooperation department has been increased, the conquassation risk of leading to because of the atress is too big has been avoided, can effectively reduce the risk of the dough kneading machine work back and the difficult taking out of face kneading piece. After dough kneading is finished, the dough kneading piece can be detached, a user can conveniently clean and use the dough kneading piece, and the use experience of the user is improved. Preferably, the boss 112 is located on an extension line of the connecting portion 13, so that transmission efficiency is improved, and structural stability is facilitated. The axial assembly mode of the transmission shaft 2 and the mounting hole 111 is clearance fit, namely, a mounting clearance is formed between the boss 112 and the mounting groove 21, and the function of detachable cleaning after the dough kneading piece 1 works is realized.

As shown in fig. 2 to 5, as mentioned above, the fitting plane is formed at the periphery of the boss 112, specifically, the fitting plane is two boss side planes 1121, the corresponding fitting plane of the transmission shaft is also located in the circumferential direction, and further, in the transmission process of the mounting hole and the transmission shaft, the transmission force is transmitted through the circumferential fitting plane. As shown in fig. 3 and 4, in one embodiment, the mounting hole 111 of the dough piece 1 extends inward to have a thickness dimension H1: 2-3mm boss 112, drive shaft 2 is provided with depth dimension H2: 2-3mm of the structure of the mounting groove 21, in order to facilitate the disassembly, the depth H2 of the mounting groove 21 is slightly larger than the protruding thickness H1 of the boss. Because the sizes of the mounting hole 111 and the transmission shaft 2 are smaller, if the protruding thickness H1 of the boss 112 is too large, correspondingly, the depth H2 of the mounting groove 21 of the transmission shaft 2 is large, and the structural strength of the transmission shaft 2 is affected; if the protruding thickness of the boss 112 is too small, the formed boss side plane 1121 is too small, which has a small effect of increasing the stressed area, and the face component 1 still has a high risk of crushing. When the protruding thickness of the boss 112 is H1 to be 2-3mm, a better effect can be achieved for improving the transmission strength and the overall structural strength.

As shown in fig. 2 to 5, a boss 112 is provided extending axially along the mounting hole 111 to form a fitting guide. In the installation process, the installation process of the installation part 11 of the dough kneading piece 1 from top to bottom along the transmission shaft 2, the axial matching plane has the guiding function, and the installation is convenient. In one embodiment, the two boss side planes 1121 are axially and horizontally disposed, so that installation misalignment can be avoided. The boss 112 extends downwards along the axial direction of the top plane, so that the length of the axial matching plane can be increased, the stress area of the matching plane is further increased, and the matching is more stable; at the same time

As shown in fig. 2 to 3, a gap is formed between the lower end surface of the boss 112 and the lower end surface of the mounting hole 111 in the axial direction of the mounting hole 111. In one embodiment, the boss 112 extends axially downward along the top plane of the mounting hole 111 to a distance H3:2-3mm from the bottom surface of the mounting hole 111 such that an axial step structure is formed between the lower end surface of the boss 112 and the inner wall of the mounting hole 111. Further, in the installation of transmission shaft 2, axial step structure supports on the step hole of transmission shaft 2, realizes the support cooperation of spacing and transmission in-process of axial, and the transmission is more stable, reduces the conquassation risk. Meanwhile, the structure of the limit boss 112 of the dough kneading piece 1 is higher than the lower end face of the mounting hole 111 of the dough kneading piece 1, so that the problem that the bottom of the cup body 41 is scratched by the friction between the bottom surface of the dough kneading piece 1 and the surface of the dough kneading cup 4 in the working process of the dough kneading machine can be prevented.

As shown in fig. 6, a stopper 113 for preventing the flip-chip mounting is provided at the upper end of the mounting hole 111 such that the sectional shape of the upper end of the mounting hole 111 is smaller than the sectional shape of the lower end of the mounting hole 111. In one embodiment, the limiting member 113 is an anti-reverse installation plane, the anti-reverse installation plane extends along the edge of the boss 112 in the radial direction, and the anti-reverse installation plane extends from the top plane of the installation portion 11 to the inside of the installation hole 111, and the thickness is about 1 mm. The shapes of the upper end face and the lower end face of the mounting hole 111 are different by arranging the anti-inversion plane, so that the upper end and the lower end can be easily distinguished by a user in the using process, and the anti-inversion can be realized; more importantly, the locating part 113 limits the face piece 1 to be reversely installed to be inserted into the transmission shaft, so that the face piece 1 cannot be reversely installed, the risk that the face effect is poor due to the fact that the face piece is reversely installed in the face piece assembling process of a user is avoided, and the user use experience is improved. It will be understood by those skilled in the art that the anti-flip flat surface may cover the top of the dough piece 1 partially or completely to achieve the anti-flip effect.

Example two:

as shown in fig. 7 to 10, this embodiment is different from the embodiment in that a fitting plane is formed on the axial end surface of the boss 112 to form a fitting plane. The boss 112 is formed by radially extending the mounting hole 111 inward to form a stepped hole, and the mounting hole 111 is formed by a fitting hole portion 114 and a stepped hole portion 115, and accordingly, the propeller shaft 2 is formed by two portions, i.e., a fitting shaft portion 22 and a stepped shaft portion 23. The inner wall of the fitting hole portion 114 forms a transmission fitting plane, and the axial end face of the stepped hole portion 115 forms a support fitting plane. The shaft end face of the step hole part 115 is in butt fit with the end face of the step shaft part 23, axial limiting is achieved, the matching area is increased through the step structure, and stability is improved. Preferably, the diameter of the step hole portion 115 is larger than that of the matching hole portion 114, so that the assembly of the face piece 1 and the transmission shaft 2 can be conveniently aligned and installed. Wherein, support through the face between boss 112 shaft end face and the transmission shaft 2, realized the axial spacing with face spare 1. During the dough kneading process, the dough kneading piece 1 receives the dough effort, and the bending deformation takes place for the 111 inner walls of the mounting hole of the dough kneading piece 1 and the laminating position of the 2 outer side surfaces of the transmission shaft, when the stress is larger, the 2 outer side surfaces of the transmission shaft and the supporting surface simultaneously play a supporting role for the dough kneading piece 1, thereby increasing the structural strength, reducing the failure risk of inclination or bending deformation, and improving the operation stability.

As shown in fig. 9, the boss 112 is disposed around the inner wall of the mounting hole 111, and the lower end surface of the boss forms an annular step end surface, so that the dough kneading member 1 is stressed in the axial direction in a balanced manner, and even if the dough kneading member receives a large reaction force, the dough kneading member is not inclined, and can be detached and taken out for cleaning after use. The boss 112 may be in a continuous or discontinuous surrounding manner, and may also include two pairs of symmetrical first and second bosses, which have different protruding thicknesses. With continued reference to fig. 9, in one embodiment, the bosses 112 are designed as first and second diametrically symmetrical bosses 1122 and 1123, the first boss 1122 being greater than the projected thickness of the second boss 1123, the end faces of the first and second bosses 1122 and 1123 forming the step hole portion 115. Through two pairs of bosses which are symmetrically arranged, the mounting hole 111 forms flat position transmission with the transmission shaft 2 through the bosses 112, and transmission efficiency can be ensured.

As shown in fig. 11-13, the present invention further provides a dough mixer, which comprises a main body 3, a dough mixing cup 4 disposed above the main body 3, and the dough mixing component 1. Wherein, the dough kneading cup 4 includes cup 41 and bowl cover 42, the inside process chamber that forms the dough preparation of cup 41, and the cup 41 middle zone is equipped with the constant head tank of transmission shaft 2, and host computer 3 is equipped with motor element 31, and transmission shaft 2 is connected with motor element 31 transmission to stretch into the process chamber by the transmission shaft constant head tank, install in transmission shaft 2 with face spare 1. Due to the adoption of the dough kneading piece 1, the dough kneading piece 1 of the dough kneading machine is stable in transmission, the matching part is not easy to crush, the disassembly and the cleaning are convenient, and the use safety of the machine is ensured. In one embodiment, the motor assembly 31 and the transmission shaft 2 are axially limited through a clamp spring 33, the lower surface of the clamp spring 33 is matched with an inner ring of a bearing 34, the clamp spring 33 is fixed in a clamp spring 33 groove of the transmission shaft 2 and is supported by the bearing 34 to the clamp spring 33, a limiting part 113 of the bearing 34 is connected with the dough kneading cup 4 through a rivet to fix and support the bearing 34, and the bottom of the transmission shaft 2 is in interference fit with a spline and is connected with a driving motor through the spline to realize transmission.

As shown in fig. 11 to 13, a seal 5 is provided between the drive shaft 2 and the face cup 4, the seal 5 having an axial lip 51 and a circumferential lip 52. In the process of installation and matching, installation gaps exist between the dough kneading piece 1 and the transmission shaft 2 and between the dough kneading cup 4. In order to prevent to knead dough the in-process flour and water and leak and lead to the impaired problem of host computer 3, through the interference fit of the axial lip 51 of sealing member 5 and transmission shaft 2, through circumference lip 52 and the interference fit between the cup 4 of kneading dough, realize with the sealed effect of transmission shaft 2, the pot body, promote user and use experience and ensure machine safety in utilization.

In one embodiment, the lip is a sealing method of line-to-surface fit, and the axial lip 51 and the circumferential lip 52 are respectively provided with a sealing rib to abut against the transmission shaft 2 and the surface cup 4. The lip is flat periphery usually in the scheme above the market at present, and face cooperation can lead to lip warpage fold to influence sealed effect, and the problem of warpage fold in the lip installation can be avoided for the cooperation mode of line and face to lip and 2 cooperations in this scheme, and the little wear loss of line and face cooperation mode area of contact ensures the sealed effect of sealing member 5 less. Sealing member 5 relies on gasket 32 to support and the pot body closely laminates, gasket 32 and 34 outer lane contact part of bearing, bottom the pot body, the laminating of 34 outer lanes of bearing prevents that bearing 34 from installing back can the axial rock can play the spacing effect of bearing 34 axial, gasket 32 remainder does not contact with 34 inner races of bearing, gasket 32 can prevent sealing member 5 and 34 contact of bearing to sealed supporting of filling up, avoid the risk that sealing member 5 that bearing 34 during operation wearing and tearing sealing member 5 caused damages.

The technical solutions protected by the present invention are not limited to the above embodiments, and it should be noted that the combination of the technical solution of any one embodiment and the technical solution of one or more other embodiments is within the protection scope of the present invention. Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims (10)

1. The utility model provides a dough kneading piece, includes installation department, stirring portion and connection the installation department with the connecting portion of stirring portion, its characterized in that, the installation department has the mounting hole, the cooperation plane has in the mounting hole, the mounting hole is equipped with radial convex boss, the boss surface forms cooperation plane.

2. A dough mixer according to claim 1, wherein said engagement surface is formed on the periphery of said boss.

3. A dough mixer according to claim 2, wherein the bosses extend axially along the mounting holes to provide a mating guide.

4. A dough kneading member according to claim 3, wherein a gap is provided between the boss lower end surface and the mounting hole lower end surface in the axial direction of the mounting hole.

5. The kneading member according to claim 1, wherein the upper end of the mounting hole is provided with a stopper for preventing the reverse mounting so that the cross-sectional shape of the upper end of the mounting hole is smaller than the cross-sectional shape of the lower end of the mounting hole.

6. A dough mixer according to claim 1, wherein said engagement surface is formed on said boss axial end surface to form an engagement surface.

7. A face-piece according to claim 6, wherein said mounting hole is formed by said boss as a stepped hole having a stepped end face which is axially abuttingly engageable with a stepped shaft.

8. A dough kneading member according to claim 7, wherein said boss is circumferentially provided along an inner wall of said mounting hole.

9. A dough mixer comprising a main body, a dough mixing cup and a dough mixing member as claimed in any one of claims 1 to 7, wherein the main body is provided with a motor assembly, and the dough mixing member is mounted in the dough mixing cup and is in transmission connection with the motor assembly.

10. A dough mixer as claimed in claim 9, wherein the dough kneading member is mounted on a drive shaft, and a seal is provided between the drive shaft and the dough kneading cup, the seal having an axial lip and a circumferential lip.

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