Main machine for food processor and food processor

Abstract

The invention relates to the technical field of food processing devices and accessories thereof, in particular to a main machine for a food processor and the food processor, the main machine comprises a shell with an open bottom end and a motor assembly mounted in the shell, and further comprises a base fixed at the bottom end of the motor assembly and a protective cover covering the outer side of the motor assembly; the side wall of the protective cover is arranged on the periphery of the motor assembly in a surrounding mode, the side wall of the protective cover is fixedly connected with the base to form a driving assembly, the driving assembly extends into the shell from the opening of the shell so that the base can seal the opening, and the protective cover is fixedly connected with the shell. The potential hazard that the motor collides and damages the shell in the prior art is eliminated through the protective cover, and the protective effect on the motor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of food processing devices and accessories thereof, and in particular to a host machine for a food processing machine and a food processing machine. Background Art

[0002] In traditional food processing machines, in order to fix the motor in the main machine, the bottom of the motor is usually fixed to the base of the main machine. The applicant has previously invented a shredder, including a shell that accommodates the motor and a base that closes the bottom open of the shell. The shell is provided with a flange extending inward, and the fastener passes through the base from bottom to top and is locked to the flange, so that the shell and the base are enclosed to form an installation cavity, and the motor is enclosed in the installation cavity. The top cover of the shell is fixed with a limiter, and the limiter extends to the side of the motor to limit the swing of the upper part of the motor. The limiter is used to control the upper part of the motor within a certain range of deflection to avoid the problem of loosening and failure of the motor connection.

[0003] After further research, the applicant found that during the host anti-drop test, due to the winding coil on the inner side of the stator of the motor, the outer diameter of the stator is larger than the outer diameter of the upper part of the motor. Even if the upper part of the motor swings within a preset range, there is still a potential risk of the stator directly hitting the shell or its side safety switch assembly. In addition, based on the installation method adopted by the shell and the base, when the host is dropped, if the motor swings violently, there is a situation where the motor directly detaches from the base and hits the shell. The motor detaches from the base and collides with the flange, causing the motor to directly smash the shell and then detach from the shell, and the shell is directly scrapped and cannot be repaired and continued to be used.

[0004] In addition, the utility model patent with application number CN201020200994.9 discloses a safety lock structure for a handheld blender, in which the motor is arranged below the body and fixed to the bottom of the battery bracket through the motor bracket, and the electronic board is arranged vertically on the battery bracket, and the battery bracket protects the battery and the electronic board to prevent the battery from colliding. The protection effect of this scheme on the motor is still insufficient. After the main machine falls, the lateral extension of the motor bracket will directly collide with the shell, causing the risk of shell damage. In addition, the extension of the motor bracket is directly connected to the shell or has a small gap. During the vibration of the motor, the vibration will be directly transmitted to the body, and the heat of the motor will be directly radiated to the body, which will cause numbness and scalding of the hands, and further cause the problem of high working noise. Summary of the invention

[0005] The invention provides a host machine for a food processing machine and the food processing machine, which solves the problem in the prior art that the motor is directly separated from a base and a housing due to poor protection effect of the motor.

[0006] To achieve the above-mentioned purpose, the present invention provides a main unit for a food processing machine, including a shell with an open bottom and a motor assembly installed in the shell, and also including a base fixed to the bottom end of the motor assembly and a protective cover installed on the outside of the motor assembly. The side walls of the protective cover are arranged around the periphery of the motor assembly, and the side walls of the protective cover are fixedly connected to the base to form a drive assembly. The drive assembly extends from the opening of the shell into the shell, so that the base closes the opening and the protective cover is fixedly connected to the shell.

[0007] The present invention provides a protective cover, the side wall of which is fixed to the base, and the driving assembly is then installed in the housing. The side wall of the protective cover is arranged around the outer periphery of the motor assembly. Therefore, the protective cover has an all-round protective and limiting effect on the circumference of the motor assembly. Since the side wall of the protective cover is fixed to the base, the protective cover and the base are connected so that in the axial direction of the motor assembly, the connecting part of the side wall of the protective cover and the base and the base jointly block and limit the tail end, the connecting part and the output end of the motor assembly. Compared with the traditional technology of only relying on the limiting member to limit the upper part of the motor, the space not covered by the limiting part is reduced. The possibility of collision between the motor and the casing in the lateral space of the cover. At the same time, the side wall of the protective cover will be subject to the fixed traction force of the base. After the main unit falls and causes the motor to touch the protective cover, the traction force of the protective cover reversely offsets the collision force of the motor assembly, thereby avoiding collision with the casing, while maintaining the verticality of the motor assembly, and playing a straightening role for the motor. Therefore, in the host anti-fall test, no matter what the radial dimensions of different parts of the motor assembly are, the circumferential and axial parts of the motor assembly cannot collide with the casing due to the isolation of the protective cover, thereby eliminating the potential hidden danger of motor collision and damage to the casing in the prior art.

[0008] Preferably, the inner side of the protective cover defines a protective cover for accommodating the motor assembly, a second accommodating cavity is provided between the outer side of the protective cover and the outer shell, and a control board electrically connected to the motor assembly is provided in the second accommodating cavity.

[0009] The second accommodating chamber is provided to protect the control board, and the control board and the motor assembly are separated by the top wall of the protective cover to prevent the motor assembly from directly colliding with the control board and causing the control board to be scrapped. In summary, even in extreme conditions during the drop test or during user use, the violent swing of the motor assembly will cause the motor assembly to preferentially affect the deformation or damage of the protective cover rather than the control board and the housing. Therefore, the degree of damage to the control board and the housing is reduced, and the control board and the housing are preserved by discarding the protective cover, thereby facilitating the subsequent maintenance and use of the control board and the housing and reducing costs. The top wall of the protective cover blocks the carbon powder of the motor from splashing onto the control board, thereby preventing short circuit problems caused by the accumulation of carbon powder on the control board, and at the same time preventing the heat of the motor from being transferred to the control board, protecting the components on the control board.

[0010] In addition, since the side walls of the protective cover are fixed to the base and the drive assembly is formed and then installed in the shell, it can be installed in the host. Therefore, there is no need to directly connect the side walls of the protective cover and the shell of the outer shell, thereby reducing the vibration of the motor assembly transmitted to the host shell and preventing the host from becoming numb. The protective cover surrounds the motor to cover the motor, and the heat and vibration noise of the motor assembly are transmitted out of the shell after being buffered and blocked by the inner cavity of the protective cover. When the noise is transmitted to the side walls and top wall of the protective cover, the sound waves are reflected to achieve energy reduction, thereby greatly reducing the noise passing through the shell. Similarly, the temperature of the motor heat decreases after passing through the side walls of the protective cover, thereby reducing the temperature transmitted to the shell, alleviating the problem of the host being hot and improving the feel of the host.

[0011] Preferably, the top wall of the protective cover is provided with an upper enclosure plate extending upward, and the upper enclosure plate is arranged around the circumference of the control plate to form a cavity side wall of the second accommodating cavity.

[0012] By setting an upper panel on the protective cover, functional integration is achieved, that is, the protection function of the control panel and the protection function of the motor assembly are integrated on the protective cover. In extreme cases, if the motor assembly moves violently and causes damage to the top wall of the protective cover, then by setting the upper panel, the upper panel continues to block the motor assembly, increasing the difficulty of the motor assembly colliding with the control panel, and achieving layered protection.

[0013] Preferably, the housing comprises a shell and a metal top cover fixed on the top of the shell, the upper enclosure plate is an insulating plate and the top end of the insulating plate is higher than the plate body of the control board.

[0014] The metal top cover improves the host's drop resistance and structural strength. The metal top cover has a smooth surface, which improves the host's texture and makes it more attractive to users. The upper panel is an insulating board that is higher than the control panel. The creepage path of the electrical components on the panel needs to go from bottom to top along the side wall of the lower panel and over the top of the upper panel to reach the side wall of the top cover, thereby increasing the creepage distance of the electrical components on the panel, preventing leakage, and improving safety.

[0015] Preferably, the side wall of the protective cover is separated from the motor assembly to form a first gap;

[0016] And / or, the side wall of the protective cover is separately arranged from the shell to form a second gap.

[0017] By setting the first gap, vibration noise and direct transfer of heat caused by the contact between the motor assembly and the side wall can be avoided. Due to the setting of the first gap, when the main unit falls or the motor assembly deflects slightly during the operation of the main unit, the first gap provides space for the deflection of the motor assembly, thereby preventing the motor assembly from directly abutting against the side wall of the protective cover and causing hard contact, thereby improving the drop resistance of the main unit and reducing the resonance between the motor assembly and the protective cover during the operation of the main unit, thereby eliminating resonance noise and achieving a good sound-reducing effect.

[0018] By setting the second gap, the vibration transmitted from the motor to the protective cover can be prevented from being further transmitted to the shell. Since the motor assembly may deflect severely during the host drop test, in this case, the protective cover will correct the motor deflection to a certain extent. However, under extreme conditions, the protective cover may be shaken by the violent deflection of the motor assembly. Therefore, by setting the second gap, a deflection space is provided for the protective cover, thereby reducing the potential risk of the protective cover colliding with the shell and improving the anti-fall performance of the host. In addition, by setting the second gap, since the shell has a structure that circumferentially wraps the protective cover, an annular closed air cavity will be formed in the second gap, and the air cavity has a good isolation effect on the vibration noise and heat of the motor assembly, thereby reducing the transmission of noise and avoiding the problem of hot hands and numb hands of the host.

[0019] Preferably, the overlapping height between the side wall of the protective cover and the motor assembly is H1, and the height from the tail end to the output end of the motor assembly is H2, wherein 1 / 2≤H1 / H2≤1;

[0020] Preferably, the motor assembly comprises a motor, the motor comprises a stator and an output shaft, and the side wall of the protective cover extends downward to a point lower than a top end of the stator;

[0021] 1 / 2≤H1 / H2≤1 is satisfied, that is, the lateral shielding of the motor assembly by the protective cover is not less than half the height of the motor assembly body, thereby improving the straightening effect of the motor assembly. In addition, the stator of a general motor assembly is located in the middle position. Therefore, this parameter range is usually set and the side wall of the protective cover is set lower than the top of the stator, so that the protective cover can at least laterally block the stator of the motor assembly, that is, the part with a larger outer diameter, and reduce the probability of the stator of the motor assembly directly colliding with the shell.

[0022] Preferably, the height H3 of the mainframe and the diameter R of the mainframe satisfy: 1.5≤H3 / R≤3.

[0023] Since the interior of the host needs to be equipped with motors, safety switches, control panels, protective covers and other structures, in order to achieve reasonable use of space and coordination of size, and to facilitate users to take it, H3 and R are set within the range of 1.5≤H3 / R≤3. Avoid the problem of the host being too high, the center of gravity being biased upward, and the stability being poor due to H3 / R being too large, and avoid the problem of being inconvenient for users to take it with one hand and inconvenient to move due to H3 / R being too small.

[0024] Preferably, the side wall of the protective cover is a lower enclosure plate provided with a notch groove, and the notch groove extends along the axial direction of the protective cover to the bottom end of the lower enclosure plate.

[0025] By providing a notch groove, the lower enclosure plate has deformation space so as to have a larger deformation capacity. When the motor collides with the lower enclosure plate, the lower enclosure plate offsets the collision force of the motor through adaptive deformation to avoid being directly broken by the motor. Therefore, the lower enclosure plate not only has a good straightening effect on the motor, preventing the motor from further damaging the casing or control board, but also protects its own structure from being damaged by the motor, thereby improving the reliability of the main engine.

[0026] Preferably, a wire outlet is provided at the top of the lower enclosure plate, and the wire outlet is communicated with the notch groove;

[0027] By setting a wire outlet at the position of the lower enclosure, it is convenient for the lead wires of the motor to pass through and connect with the control board or an external power supply. The wire outlet and the notch groove are connected to facilitate mold manufacturing and improve the deformation ability of the lower enclosure to avoid being hit and broken by the motor.

[0028] Alternatively, a wire clamping groove is provided on the outer side of the notch groove.

[0029] By setting up the wire slot, the wire harnesses are prevented from being entangled, interference between the wire harnesses is avoided, and unreliable connection caused by being pulled is avoided, and the space utilization is reasonable and compact.

[0030] Preferably, the side wall of the protective cover is a plurality of divided plates arranged intermittently along the circumference of the motor assembly.

[0031] By setting up multiple sub-plates, the circumference of the motor assembly is jointly protected to prevent the motor assembly from swinging and colliding with the shell. The gaps between the multiple sub-plates can provide deformation space for the sub-plates. When the motor assembly collides with the sub-plates, the sub-plates can deform to buffer the force and avoid cracking. At the same time, there are avoidance gaps between the sub-plates to facilitate the arrangement and clamping of the leads.

[0032] Preferably, the motor assembly includes a motor and a reduction box fixed to the bottom end of the motor, and the main machine also includes a first fixing member, which passes through the housing of the reduction box from bottom to top and is fixedly connected to the side wall of the protective cover.

[0033] Preferably, the base is provided with a hollow column extending from bottom to top, the side wall of the protective cover is provided with a positioning column connected with the hollow column, the bottom end of the hollow column is provided with an opening, the first fixing member passes through the hollow column from the opening and is fixed in the positioning column, and a sealing plug is provided at the opening;

[0034] The side wall of the protective cover is fixed to the housing of the reduction box by the first fixing part, thereby realizing an indirect fixed connection with the base, saving the number of fixed parts, realizing one-step fixing of the motor assembly, the protective cover and the base, improving assembly efficiency and reliable fixing. Since the housing of the main engine is set on the outside of the protective cover, the housing has a certain height and a limited radial dimension. Therefore, when the protective cover is assembled on the basis of the housing and the base being assembled in place, there is only a small operating space between the housing and the protective cover. If the first fixing part is used to lock the protective cover and the reduction box or the base from top to bottom, the assembly process will be difficult due to the small operating space, affecting the assembly efficiency, and the locking may not be in place, or the assembler must first install the protective cover and then install the housing. The assembly steps are rigid and not conducive to rapid assembly. Therefore, the method of fixing from bottom to top by the first fixing part is adopted, which has low operating difficulty, high assembly efficiency, and the assembly order between the components can be flexibly adjusted. The hollow column can guide the locking installation of the first fixing member. An opening is arranged at the bottom end of the hollow column and a sealing plug is arranged at the opening, so as to prevent debris or dust from entering the hollow column and facilitate the disassembly and maintenance of the main unit.

[0035] Preferably, the host also includes a second fixing member, the outer shell includes a shell surrounding the protective cover and a top cover fixed to the top of the shell, the second fixing member passes through the top cover from top to bottom and is locked to the top wall of the protective cover, and the shell is clamped between the top cover and the base.

[0036] The above fixing method simplifies the fixing and installation process of the shell and improves the assembly efficiency of the host.

[0037] The present invention also provides a food processing machine, comprising the above-mentioned main machine and a stirring element matched with the main machine.

[0038] The food processor provided by the present invention can realize the function of crushing food materials, and meet the needs of users for mincing meat, chopping vegetables, beating eggs, and whipping. Since the above-mentioned host is adopted, the host has strong anti-fall performance, and eliminates the potential hidden danger of motor collision damaging the shell and the control panel in the prior art. When the host falls, the degree of damage to the shell can be reduced. By discarding the protective cover to protect the control panel and the shell, it is convenient for the subsequent maintenance and use of the control panel and the shell, and the cost is reduced. At the same time, the vibration feel of the host is reduced and the temperature of the host is reduced, so as to improve the use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0040] Figure 1 The figure is a schematic cross-sectional structure diagram of a food processor in one embodiment of the present invention.

[0041] Figure 2 It is a cross-sectional view of a host in one embodiment of the present invention.

[0042] Figure 3 This is a cross-sectional view of the host at another angle in one embodiment of the present invention.

[0043] Figure 4 It is a schematic diagram of the cooperation between the protective cover and the top cover assembly in one embodiment of the present invention.

[0044] Figure 5 The figure is a schematic diagram of the matching structure of the protective cover, the base and the shell in one embodiment of the present invention.

[0045] Figure 6 The figure is a schematic diagram of the assembly structure of the protective cover and the top cover assembly in one embodiment of the present invention.

[0046] Figure 7 The figure is a schematic diagram of the three-dimensional structure of the protective cover in one embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 10-main machine; 20-cup body; 30-crushing knife; 40-cup cover; 41-through hole; 11-shell; 12-top cover; 121-threading hole; 13-base; 131-hollow column; 14-control board; 15-control button; 16-first fixing piece; 17-sealing plug; 18-second fixing piece; 51-motor; 52-reduction gearbox; 60-protective cover; 61-first accommodating chamber; 62-second accommodating chamber; 621-upper enclosure; 622-inner hole; 611-cavity side wall; 612-top wall; 613-positioning column; 614-notch groove; 615-wire outlet; 616-wire slot; 617-wire outlet. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0050] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0051] like Figure 1 As shown, the present invention provides a host 10 for a food processor in one embodiment. Taking a meat grinder as an example, the food processor includes a cup body 20, a crushing knife 30 installed in the cup body 20, a cup cover 40 arranged above the cup body, and the host 10, and the cup cover 40 is provided with a through hole 41.

[0052] like Figure 1 and Figure 2 As shown, the main machine for the food processing machine provided by the present invention includes a motor assembly 50, a shell 11 for accommodating the motor assembly 50, a top cover 12 fixed on the top of the shell and a base 13 fixed on the bottom of the shell, the motor assembly 50 preferably includes a motor 51 and a reduction box 52, the motor assembly has an output end close to the base and a tail end close to the top cover, the output end is provided with an output shaft 53, a control board 14 electrically connected to the motor assembly is provided in the shell 11, the base 13 is provided with an output hole corresponding to the output shaft, the motor assembly 50 is fixedly connected to the base 13, a protective cover 60 located at the tail end of the motor assembly is provided in the shell 11, the protective cover 60 is provided with a first accommodating cavity 61 opening toward the motor assembly, the cavity side wall 611 of the first accommodating cavity 61 is arranged around the circumference of the motor assembly, the side wall 611 of the protective cover is fixed to the base 13, the top wall 612 of the protective cover and the top cover 12 are enclosed to form a second accommodating cavity 62 for accommodating the control board, and the control board 14 and the motor assembly are separated by the top wall 612 of the protective cover.

[0053] It should be noted that the present invention is mainly described as a shell formed by the top cover and the shell being separately combined, but it can be understood that the top cover and the shell can also be an integrated part.

[0054] Preferably, a control button 15 for controlling the start and stop of the motor assembly is provided on the top of the top cover.

[0055] The operating principle of the food processor is: install the crushing knife in the cup body, put the food to be crushed into the cup body, cover the cup cover, and then place the main unit on the cup cover. The cup cover is provided with a through hole for the output shaft of the main unit to be connected to the blade shaft of the crushing knife. By pressing the control button to start the motor assembly, the output shaft drives the crushing knife to rotate to realize the crushing function. The food processor provided by this embodiment can meet the needs of users for mincing meat and chopping vegetables. Due to the use of the above-mentioned main unit, the main unit has strong anti-fall performance, eliminating the potential hidden danger of the motor colliding and damaging the shell and the control panel in the prior art. When the main unit falls, the degree of damage to the control panel and the shell can be reduced. By discarding the protective cover to protect the control panel and the shell, it is convenient for the subsequent further maintenance and use of the control panel and the shell, reducing costs. At the same time, the vibration feel of the main unit is reduced and the temperature of the main unit is reduced, thereby improving the user experience.

[0056] Specifically, by setting a protective cover, the protective cover is set with a protective cover, and the side walls of the protective cover are set around the circumference of the motor assembly to play an all-round protection and limiting role on the circumference of the motor assembly. Since the side walls of the protective cover are fixed to the base, the protective cover and the base are connected, so that in the axial direction of the motor assembly, the side walls of the protective cover, the connecting parts of the protective cover and the base, and the base jointly block and limit the tail end, connecting parts and output end of the motor assembly. Compared with the traditional technology that only relies on the limiting part to limit the upper part of the motor, the possibility of collision between the motor and the shell in the lateral space not covered by the limiting part is reduced. At the same time, the side walls of the protective cover will be subject to the fixed traction force of the base. After the main machine falls and causes the motor to touch the protective cover, the traction force of the protective cover reversely offsets the collision force of the motor assembly, thereby avoiding collision with the shell, while maintaining the verticality of the motor assembly, It plays a role of straightening. Therefore, in the host anti-fall test, no matter what the radial dimensions of different parts of the motor assembly are, the circumferential and axial parts of the motor assembly cannot hit the shell through the isolation of the protective cover, thereby eliminating the potential hidden danger of the motor colliding and damaging the shell in the prior art; the control board is protected by setting the second accommodating chamber, and the control board and the motor assembly are separated by the top wall of the protective cover to prevent the motor assembly from directly colliding with the control board and causing the control board to be scrapped. In summary, even in extreme conditions during the anti-fall test or during user use, the violent swing of the motor assembly will cause the motor assembly to preferentially affect the deformation or damage of the protective cover, rather than the control board and the shell. Therefore, the degree of damage to the control board and the shell is reduced, and the control board and the shell are preserved by abandoning the protective cover, so as to facilitate the subsequent further maintenance and use of the control board and the shell, and reduce costs. The top wall of the protective cover blocks the carbon powder of the motor from splashing to the control board, thereby preventing the short circuit problem caused by the accumulation of carbon powder on the control board, and at the same time preventing the heat of the motor from being transferred to the control board, protecting the components on the control board.

[0057] In addition, since the side wall of the protective cover is fixed to the base so that it can be installed in the main unit, there is no need to directly connect the protective cover and the shell, thereby reducing the vibration of the motor assembly transmitted to the main unit shell and preventing numbness of the main unit; the protective cover surrounds the motor to cover the motor, and the heat of the motor assembly is transmitted out of the shell after being buffered and blocked by the inner cavity of the protective cover, thereby reducing the temperature of the motor heat transferred to the shell, preventing the main unit from being scalding and improving the feel of the main unit.

[0058] It should be noted that the present invention does not limit the fixing method between the protective cover and the base. This embodiment takes the method in which the protective cover is indirectly fixedly connected to the base through the reduction box as an example for detailed description:

[0059] In a preferred embodiment, Figure 3As shown, the motor assembly 50 includes a motor 51 and a reduction box 52 fixed to the bottom end of the motor, and the main unit 10 also includes a first fixing member 16, such as a screw, which passes through the housing of the reduction box 52 from bottom to top and is fixedly connected to the side wall 611 of the protective cover.

[0060] More preferably, the base 13 is provided with a hollow column 131 extending from bottom to top, the side wall of the protective cover is provided with a positioning column 613 connected with the hollow column, the bottom end of the hollow column 131 is provided with an opening, the first fixing member 16 passes through the hollow column from the opening and is fixed in the positioning column, and a sealing plug 17 is provided at the opening;

[0061] The side wall of the protective cover is fixed to the housing of the reduction box through the first fixing piece, thereby realizing an indirect fixed connection with the base, saving the number of fixing parts, realizing one-step fixing of the motor assembly, the protective cover and the base, improving assembly efficiency and reliable fixing. The hollow column can guide the locking installation of the first fixing piece, and an opening is set at the bottom end of the hollow column and a sealing plug is set at the opening to prevent debris or dust from entering the hollow column, making it convenient to disassemble and repair the main engine.

[0062] In this embodiment, if Figure 2 As shown, regarding the overall assembly of the mainframe, the second fixing member 18 passes through the top cover 12 from top to bottom and is locked to the top wall 612 of the protective cover, and the shell 11 is clamped between the top cover 12 and the base 13.

[0063] Specifically, combined Figure 2-5 As shown, the top wall 612 of the protective cover is provided with a stud 618 , and the corresponding top cover 12 is provided with a screw hole 122 . The second fixing member is a screw, and the second fixing member 18 passes through the screw hole 122 and is locked into the stud 618 .

[0064] The above-mentioned fixing method is adopted to simplify the fixing and installation process of the shell and improve the assembly efficiency of the main machine. Moreover, since the shell of the main machine is arranged on the outside of the protective cover, the shell has a certain height and a limited radial dimension. Therefore, when the protective cover is assembled on the basis of the shell and the base being assembled in place, there is only a small operating space between the shell and the protective cover. If the first fixing part is used to lock the protective cover and the reduction box or the base from top to bottom, the assembly process will be difficult due to the small operating space, affecting the assembly efficiency, and the locking may not be in place. Alternatively, the assembler must first install the protective cover and then install the shell. The assembly steps are rigid and not conducive to rapid assembly. Therefore, the method of fixing from bottom to top by the first fixing part is adopted, which has low operating difficulty, high assembly efficiency, and the assembly order between the components can be flexibly adjusted.

[0065] It should be noted that in this embodiment, since the side wall of the protective cover directly extends to the position connected to the reduction box, that is, the cavity side wall completely blocks the motor axis, and positioning columns are protruded outside the side wall of the protective cover to fasten the first fixing member.

[0066] In fact, in another preferred embodiment, the side wall of the protective cover only extends to the vertical space between the gearbox and the protective cover. By providing an extension portion extending toward the side wall of the protective cover on the gearbox, the extension portion is docked with the protective cover. In this embodiment, although the side wall of the protective cover does not completely block the motor axial direction, the extension portion can limit and protect the motor assembly in the height space not covered by the extension portion, and still has a good anti-fall protection effect. The extension portion can actually be a positioning column extending downward from the protective cover.

[0067] In the above embodiment, the side wall of the protective cover is fixed to the base through the housing of the reduction box. In fact, in another preferred embodiment, the housing of the reduction box is fixedly connected to the base, and the side wall of the protective cover is arranged outside the housing of the reduction box and directly extends to the base and is fixedly connected to the base. When this embodiment is adopted, the side wall of the protective cover not only surrounds the motor, but also covers the outside of the reduction box. During the operation of the main machine, it not only blocks the noise and heat of the motor itself, but also blocks the noise and heat of the gears in the reduction box, so as to achieve good noise reduction and anti-scalding effects of the main machine.

[0068] Of course, it is understandable that in the above embodiments, the motor is indirectly fixed to the base via a reduction gearbox. In fact, in another optional embodiment, the side wall of the protective cover can be directly extended to the base and directly locked and fixed to the base.

[0069] In addition to the method of protruding positioning posts on the side or bottom of the protective cover, the side wall of the protective cover can actually be directly thickened so that the first fixing member is directly locked to the side wall of the cavity.

[0070] In a preferred embodiment, Figure 3 As shown, the protective cover 60 includes an upper enclosure plate 621 extending upward from the top wall of the protective cover, and the upper enclosure plate 621 is arranged around the circumference of the control board. More preferably, the top cover 12 is a metal top cover, and the upper enclosure plate 621 is an insulating plate and the top end of the insulating plate is higher than the plate body of the control board 14.

[0071] By setting an upper panel on the protective cover, functional integration is achieved, that is, the protection function of the control panel and the protection function of the motor assembly are integrated on the protective cover. In extreme cases, if the motor assembly moves violently and causes damage to the top wall of the protective cover, then by setting an upper panel, the upper panel continues to block the motor assembly, increasing the difficulty of the motor assembly colliding with the control panel, and achieving layer-by-layer protection. By using a metal top cover, the anti-fall performance of the host is improved, the structural strength is enhanced, and the surface of the metal top cover is smooth, which improves the texture of the host and makes it more beautiful, more attractive to users. The upper panel is an insulating board and is higher than the board body of the control board. The creepage path of the electrical components set on the board body needs to pass from the bottom to the top along the side wall of the lower panel to the top of the upper panel before it can be transferred to the side wall of the top cover, thereby increasing the creepage distance of the electrical components on the board body, reducing the risk of leakage, and improving safety of use.

[0072] Of course, it should be noted that the second accommodating cavity in the present invention is not limited to being surrounded by an upper enclosure plate. In another preferred embodiment, the top cover has side walls, and the side walls of the top cover surround the control panel to form the side walls of the second accommodating cavity.

[0073] It should be noted that in this embodiment, the upper enclosure plate extends along the circumference of the control board and has two ends, and an inner hole 622 is formed between the two ends for the lead wires of the control board to pass through and connect to the power line, and the power line is connected to the external power supply. In fact, the upper enclosure plate can be a closed-loop annular plate extending continuously along the circumference of the control board, and a through hole is provided on the annular plate for the lead wires of the control board to pass through; in another embodiment, the upper enclosure plate is formed by a plurality of sub-enclosure plates arranged intermittently along the circumference of the control board.

[0074] Preferably, the protective cover, the motor and the housing are separately arranged in the present invention, and any one of the following implementation examples 1, 2 and 3 can be selected:

[0075] In implementation example 1, the side wall of the protective cover is separately provided from the motor assembly, and a first gap is formed between the side wall of the protective cover and the motor assembly.

[0076] In implementation example 2, the side wall of the protective cover is separately provided from the shell, and a second gap is formed between the side wall of the protective cover and the shell.

[0077] Implementation Example 3, such as Figure 2 , 3 As shown, the side wall of the protective cover is separated from the motor assembly, forming a first gap between the side wall of the protective cover and the motor assembly. At the same time, the side wall of the protective cover is separated from the shell, forming a second gap between the side wall of the protective cover and the shell.

[0078] It should be noted that the side wall of the protective cover is separately arranged from the motor assembly, including the top wall of the protective cover is separately arranged from the motor assembly, the side wall of the protective cover is separately arranged from the motor assembly, and the side wall and top wall of the protective cover are separately arranged from the motor assembly.

[0079] By setting the first gap, vibration noise and direct transfer of heat caused by the contact between the motor assembly and the side wall can be avoided. Due to the setting of the first gap, when the main unit falls or the motor assembly deflects slightly during the operation of the main unit, the first gap provides space for the deflection of the motor assembly, thereby preventing the motor assembly from directly abutting against the side wall of the protective cover and causing hard contact, thereby improving the drop resistance of the main unit and reducing the resonance between the motor assembly and the protective cover during the operation of the main unit, thereby eliminating resonance noise and achieving a good sound-reducing effect.

[0080] By setting the second gap, the vibration transmitted from the motor to the protective cover can be prevented from being further transmitted to the shell. Since the motor assembly may deflect severely during the host drop test, in this case, the protective cover will correct the motor deflection to a certain extent. However, under extreme conditions, the protective cover may be shaken by the violent deflection of the motor assembly. Therefore, by setting the second gap, a deflection space is provided for the protective cover, thereby reducing the potential risk of the protective cover colliding with the shell and improving the anti-fall performance of the host. In addition, by setting the second gap, since the shell has a structure that circumferentially wraps the protective cover, an annular closed air cavity will be formed in the second gap, and the air cavity has a good isolation effect on the vibration noise and heat of the motor assembly, thereby reducing the transmission of noise and avoiding the problem of hot hands and numb hands of the host.

[0081] In addition, the present invention does not limit the side wall shape of the protective cover. For example, it can adopt any one of the following three implementation examples:

[0082] It should be noted that any one of the following implementation examples 4-6 can be implemented independently, and can also be implemented in combination with any one of the above implementation examples 1-3.

[0083] Implementation Example 4: This implementation example is based on Implementation Example 3. Figure 6 , Figure 7 As shown, the side wall 611 of the protective cover is a lower enclosure plate provided with a notch groove 614, and the notch groove 614 extends along the axial direction of the protective cover to the bottom end of the lower enclosure plate.

[0084] By providing a notch groove on the lower panel, the lower panel has deformation space so that it can have a large deformation capacity. When the motor collides with the lower panel, the lower panel offsets the collision force of the motor through adaptive deformation to avoid being directly broken by the motor. Therefore, the lower panel not only has a good straightening effect on the motor, preventing the motor from further damaging the housing or control board, but also protects its own structure from being damaged by the motor, thereby improving the reliability of the main engine. By providing a wire outlet at the position of the lower panel, it is convenient for the lead wire of the motor to pass through and connect with the control board or external power supply. The connection between the wire outlet and the notch groove facilitates mold manufacturing and improves the deformation capacity of the lower panel to avoid being broken by the motor. By providing a wire clamping groove, the wiring harness is prevented from being entangled, interference between the wiring harnesses, and unreliable connection caused by being pulled are avoided, and the space utilization is reasonable and compact.

[0085] At the same time, due to the setting of the first gap and the second gap, it is equivalent to forming an inner annular isolation cavity between the lower enclosure and the side of the motor assembly, and forming an outer annular isolation cavity between the lower enclosure and the shell. Although the inner annular isolation cavity and the outer annular isolation cavity are connected through the notch groove, there will be a small amount of vibration noise and heat transferred to the shell, but the lower enclosure encloses most of the axial space of the motor assembly, which has a more comprehensive protection effect; when the motor assembly is running, most of the vibration noise and heat will be weakened by the blocking energy of the lower enclosure, and only a small part is allowed to be transmitted from the notch groove to the shell. The noise and heat need to pass through the inner annular isolation cavity and the outer annular isolation cavity in turn after passing through layers of isolation before they are transmitted to the outside. Therefore, this implementation example can simultaneously improve the anti-fall performance of the host as well as the noise reduction and cooling effects.

[0086] More preferably, a wire outlet 615 is provided at the top of the lower enclosure plate, and the wire outlet 615 is communicated with the notch groove 614 ; a wire clamping groove 616 is provided on the outer side of the notch groove 614 .

[0087] More preferably, a threading hole 121 for the power cord connected to the control panel to pass through is provided on the side wall of the top cover 12, and an inner hole 622 corresponding to the threading hole 121 is provided on the upper enclosure plate, the inner hole 622, the wire outlet 615 and the notch groove 614 are connected, and an enlarged wire clamping port 617 is also provided at the bottom end of the notch groove 614.

[0088] Implementation example 5: Based on implementation example 3, the side wall of the protective cover is a plurality of divided panels arranged intermittently along the circumference of the motor assembly.

[0089] By setting up multiple sub-plates, the circumference of the motor assembly is jointly protected to prevent the motor assembly from swinging and colliding with the shell. The gaps between the multiple sub-plates can provide deformation space for the sub-plates. When the motor assembly collides with the sub-plates, the sub-plates can deform to buffer the force and avoid cracking. At the same time, there are avoidance gaps between the sub-plates to facilitate the arrangement and clamping of the leads.

[0090] In this embodiment, more avoidance spaces are formed between multiple sub-plates to improve the straightening effect of the main frame through flexible deformation of each sub-plate after the main frame falls. At the same time, although there are gaps between each sub-plate, during the operation of the main frame, the heat and vibration of the motor assembly will still be reflected by the sub-plate after being transmitted to each sub-plate. The reflected sound waves are chaotic and the energy cancels each other out, thereby achieving a better noise reduction effect. Similarly, the heat is reduced by the barrier temperature of each sub-plate, thereby preventing the problem of the main frame being too hot.

[0091] Implementation Example 6: Based on Implementation Example 3, the side wall of the protective cover is a closed-loop annular plate that continuously extends along the circumference of the motor assembly, and a through hole is provided on the annular plate for the lead wire of the power supply machine to pass through.

[0092] Due to the existence of the annular plate, the first gap and the second gap, the annular plate separates the first gap and the second gap into a closed-loop inner ring isolation cavity and an outer ring isolation cavity. During the operation of the main unit, noise and heat need to pass through the inner annular isolation cavity and the outer annular isolation cavity in turn, and only after passing through layers of barriers can they be transmitted out of the shell and the outside world. Therefore, it can have a good sound-reducing effect and anti-scalding effect, greatly improving the feel of use. The annular plate itself provides all-round straightening protection for the main unit after it falls. Therefore, the annular plate effectively prevents various circumferential parts of the motor assembly from hitting the shell, thereby eliminating the potential hidden danger of the motor colliding and damaging the shell in the prior art.

[0093] In a preferred embodiment, Figure 3 As shown, the overlapping height between the side wall of the protective cover and the motor assembly is H1, and the height from the tail end to the output end of the motor assembly is H2, wherein 1 / 2≤H1 / H2≤1;

[0094] It should be noted that, no matter the motor assembly includes only the motor or the motor and the reduction box, the height from the tail end to the output end is the height of the motor casing.

[0095] In a preferred embodiment, the motor assembly includes a motor, the motor includes a stator and an output shaft, and the side wall of the protective cover extends downward to a position lower than a top end of the stator;

[0096] 1 / 2≤H1 / H2≤1 is satisfied, that is, the lateral shielding of the motor assembly by the protective cover is not less than half the height of the motor assembly body, thereby improving the straightening effect of the motor assembly. In addition, the stator of a general motor assembly is located in the middle position. Therefore, this parameter range is usually set and the side wall of the protective cover is set lower than the top of the stator, so that the protective cover can at least laterally block the stator of the motor assembly, that is, the part with a larger outer diameter, and reduce the probability of the stator of the motor assembly directly colliding with the shell.

[0097] In a preferred embodiment, Figure 2As shown, the height H3 of the main machine and the diameter R of the main machine satisfy: 1.5≤H3 / R≤3.

[0098] Since the interior of the host needs to be equipped with motors, safety switches, control panels, protective covers and other structures, in order to achieve reasonable use of space and coordination of size, and to facilitate users to take it, H3 and R are set within the range of 1.5≤H3 / R≤3. Avoid the problem of the host being too high, the center of gravity being biased upward, and the stability being poor due to H3 / R being too large, and avoid the problem of being inconvenient for users to take it with one hand and inconvenient to move due to H3 / R being too small.

[0099] It should be noted that the food processor provided by the present invention is not limited to the above-mentioned meat grinder form. The main unit and the cup cover in the above-mentioned embodiment of the present invention are separately and independently arranged. In fact, the present invention also provides a food processor and its main unit. The food processor includes a cup body and a main unit. The bottom of the main unit is fixedly connected with the cup cover, and the cup cover can be optionally fixedly connected to the base of the main unit or to the side wall of the outer shell. The fixed connection method can be optionally integrated into one piece or fixed by fasteners or the like.

[0100] In fact, the food processor provided by the present invention can also be an egg beater. The food processor only includes a main machine and a stirring member axially limited with the main machine. The stirring member is an egg beater to achieve the functions of beating eggs and whipping.

[0101] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial” and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0102] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0103] The technical solution protected by the present invention is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any one embodiment with the technical solution of one or more other embodiments is within the protection scope of the present invention. Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A main machine for a food processing machine, comprising a housing with an open bottom and a motor assembly installed in the housing, characterized in that: It also includes a base fixed to the bottom end of the motor assembly and a protective cover mounted on the outside of the motor assembly, the side walls of the protective cover are arranged around the periphery of the motor assembly, the side walls of the protective cover are fixedly connected to the base to form a drive assembly, the drive assembly extends from the opening of the outer shell into the outer shell, so that the base closes the opening, and the protective cover is fixedly connected to the outer shell.

2. A main machine for a food processing machine according to claim 1, characterized in that: The inner side of the protective cover defines a first accommodating cavity for accommodating the motor assembly, and a second accommodating cavity is provided between the outer side of the protective cover and the outer shell. A control board electrically connected to the motor assembly is provided in the second accommodating cavity.

3. A main machine for a food processing machine according to claim 2, characterized in that: The top wall of the protective cover is provided with an upper enclosure plate extending upward, and the upper enclosure plate is arranged around the circumference of the control plate to form a cavity side wall of the second accommodating cavity.

4. A host for a food processing machine according to claim 3, characterized in that: The shell comprises a shell and a metal top cover fixed on the top of the shell, the upper enclosure plate is an insulating plate and the top end of the insulating plate is higher than the plate body of the control board.

5. The host machine for a food processing machine according to claim 1, characterized in that: The protective cover is separately arranged from the motor assembly, and a first gap is formed between the side wall of the protective cover and the motor assembly; And / or, the top wall of the protective cover is fixedly connected to the outer shell, the side wall of the protective cover is separately arranged from the outer shell, and a second gap is formed between the side wall of the protective cover and the outer shell; Alternatively, the overlapping height between the side wall of the protective cover and the motor assembly is H1, and the height from the tail end to the output end of the motor assembly is H2, wherein 1 / 2≤H1 / H2≤1; Alternatively, the motor assembly comprises a motor, the motor comprises a stator and the output shaft, and the side wall of the protective cover extends downward to a position lower than a top end of the stator; Alternatively, the height H3 of the mainframe and the diameter R of the mainframe satisfy: 1.5≤H3 / R≤3; Alternatively, the side wall of the protective cover includes a plurality of split plates intermittently arranged along the circumference of the motor assembly.

6. The main machine for a food processing machine according to claim 1, characterized in that: The side wall of the protective cover is a lower enclosure plate provided with a notch groove, and the notch groove extends along the axial direction of the protective cover to the bottom end of the lower enclosure plate.

7. A main machine for a food processing machine according to claim 6, characterized in that: A wire outlet is provided on the top of the lower enclosure plate, and the wire outlet is communicated with the notch groove; Alternatively, a wire clamping groove is provided on the outer side of the notch groove.

8. The host machine for a food processing machine according to claim 1, characterized in that: The motor assembly includes a motor and a reduction box fixed at the bottom end of the motor, and the main machine also includes a first fixing member, which passes through the housing of the reduction box from bottom to top and is fixedly connected to the protective cover.

9. A host for a food processing machine according to claim 8, characterized in that: The base is provided with a hollow column extending from bottom to top, the side wall of the protective cover is provided with a positioning column connected with the hollow column, the bottom end of the hollow column is provided with an opening, the first fixing member passes through the hollow column from the opening and is fixed in the positioning column, and a sealing plug is provided at the opening; Alternatively, the host also includes a second fixing member, the outer shell includes a shell surrounding the protective cover and a top cover fixed on the top of the shell, the second fixing member passes through the top cover from top to bottom and is locked to the top wall of the protective cover, and the shell is clamped between the top cover and the base.

10. A food processing machine, characterized in that: It comprises the main unit according to any one of claims 1 to 9 and a stirring element matched with the main unit.

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