CN211749058U - Food preparation machine with good noise reduction effect - Google Patents

Abstract

The utility model discloses a food processing machine with good noise reduction effect, which comprises a motor, a stirring cup and a crushing knife arranged at the bottom of the stirring cup, wherein the crushing knife comprises a blade and a knife shaft, the bottom of the stirring cup is provided with a mounting hole for mounting a shaft sleeve, the lower end of the knife shaft passes through the shaft sleeve to be in transmission fit with a motor shaft of the motor, the shaft sleeve comprises a rigid inner wall for fixing the knife shaft and an elastic layer arranged at the outer side of the rigid inner wall, the elastic layer wraps the top of the rigid inner wall from the upper side to be in annular fit with the knife shaft, the distance of the knife shaft wrapped by the elastic layer along the axial direction of the knife shaft is b, b is more than or equal to 0.2mm and less than or equal, through selecting the distance that suitable elastic layer wrapped up in the arbor axial, can guarantee the isolation to the noise of arbor and rigid inner wall direct impact or indirect collision product, can also avoid the elastic layer to follow the arbor axial is wrapped up apart the effect poor for the distance undersize.

Description

Food preparation machine with good noise reduction effect

Technical Field

The utility model relates to a food processing technology field particularly, relates to a food preparation machine that noise reduction effect is good.

Background

With the improvement of living standard, people begin to make more and more demands on food, pay more attention to the magical and wonderful food hidden in various delicacies, and hope to obtain more nutrition in daily diet to improve the physical state of individuals, so that when the health preserving concept is more and more popular, common families are also equipped with various food processors.

A current common food processing machine, such as a wall breaking machine, mainly comprises a base with a motor arranged therein and a stirring cup arranged above the base, wherein the bottom of the stirring cup is provided with a mounting hole for mounting a shaft sleeve, and a cutter shaft of a crushing cutter penetrates through the shaft sleeve to be in transmission fit with a motor shaft of the motor, in the prior art, the shaft sleeve comprises a rigid inner wall, a rigid outer wall matched with the mounting hole and an elastic layer for spacing the rigid inner wall and the rigid outer wall, in order to solve the problems existing in the prior art, a patent with application number of 201720659891.0 (hereinafter, referred to as application 1) is provided with a limiting mechanism for limiting the circumferential rotation of the elastic layer between the rigid inner wall and the rigid outer wall, so that the circumferential movement of parts (the rigid inner wall, the elastic layer or the rigid outer wall) of the shaft sleeve in the working process is avoided, the noise reduction effect is achieved, in the patent with application number of 201821824498.3 (hereinafter, thereby broken wall machine during operation has reduced the wearing and tearing to the axle sleeve, has promoted the life-span of product.

However, the following problems are present in the prior art, and in each of the applications 1 and 2: smash the sword arbor and directly or indirectly contact with the rigidity inner wall is hard, broken wall machine during operation, the wing of smashing the sword and arbor have certain swing when rotating, and the vibration of arbor causes and produces the vibration between its and the rigidity inner wall, and the vibration of arbor and rigidity inner wall can pass to in the stirring cup, passes to the external world through modes such as rim of a cup for broken wall machine produces great noise, brings the puzzlement for the user.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem in the above-mentioned technique to a certain extent at least, for overcoming the shortcoming and the not enough that exist among the prior art, the utility model provides a food preparation machine that noise reduction effect is good.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the food processor with the good noise reduction effect comprises a motor, a stirring cup and a crushing knife arranged at the bottom of the stirring cup, wherein the crushing knife comprises a blade and a knife shaft, the bottom of the stirring cup is provided with a mounting hole for mounting a shaft sleeve, the lower end of the knife shaft penetrates through the shaft sleeve to be in transmission fit with a motor shaft of the motor, the shaft sleeve comprises a rigid inner wall for fixing the knife shaft and an elastic layer arranged on the outer side of the rigid inner wall, the elastic layer wraps the top of the rigid inner wall from the upper side and is in annular fit with the knife shaft, the elastic layer wraps the knife shaft in the axial direction of the knife shaft, the distance between the knife shaft and the elastic layer is b, and b.

Preferably, the elastic layer annularly wraps the cutter shaft, the elastic layer is in clearance fit with the cutter shaft, the fit clearance is C, and C is larger than or equal to 0.1mm and smaller than or equal to 1 mm.

Preferably, the elastic layer annularly wraps the cutter shaft, and the elastic layer is fit with the cutter shaft.

Preferably, the elastic layer extends upwards to form a damping piece, and the damping piece is used for being matched with the lower side wall of the root part of the blade so as to limit the swinging amplitude of the crushing blade during rotation.

Preferably, the top wall of the vibration damping part is in clearance fit or fit with the lower side wall of the root of the blade.

Preferably, the section of the vibration damping part is in a horn shape with an upward opening, the vibration damping part comprises a circular ring-shaped side wall concentric with the cutter shaft, and the circular ring-shaped side wall deviates from the cutter shaft along the direction of the root of the cutter axial blade.

Preferably, the section of the vibration damping part is in a shape like a Chinese character 'ba', the vibration damping part comprises a circular ring-shaped side wall concentric with the cutter shaft, and the circular ring-shaped side wall is arranged close to the cutter shaft along the direction of the root of the cutter axial blade.

Preferably, the vibration reduction piece comprises a circular side wall concentric with the cutter shaft, and the section of the circular side wall forms an isosceles triangle.

Preferably, the matching surface of the vibration damping piece and the lower side wall of the blade root is sprayed or attached with a wear-resistant layer.

Preferably, the clearance between the vibration damping piece and the lower side wall of the blade root is a, and a is less than or equal to 2 mm.

The above technical scheme of this application has following beneficial effect:

1. in the application, the bottom of the stirring cup in the prior scheme realizes the installation of the shaft sleeve by arranging the installation hole, thereby ensuring that the cutter shaft rotates along the axial direction of the cutter shaft, but because the cutter shaft of the crushing cutter is directly or indirectly in hard contact with the rigid inner wall, when the food processor works, the blade of the crushing cutter and the cutter shaft can swing to a certain extent when rotating, the vibration of the cutter shaft causes the vibration between the cutter shaft and the rigid inner wall, the vibration of the cutter shaft and the rigid inner wall can be transmitted into the stirring cup and transmitted to the outside through the cup mouth and other modes, so that the food processor can generate larger noise, in the scheme, the rigid inner wall top is wrapped from the upper side by the elastic layer and matched with the cutter shaft in an annular mode, when the food processor works, because the elastic layer wraps the rigid inner wall top from the upper side, the vibration generated by the cutter shaft and the rigid, the elastic layer adopted in the scheme has an elastic effect and can play a role in absorbing vibration, so that when the noise generated by direct collision or indirect collision of the cutter shaft and the rigid inner wall of a product is transmitted to the stirring cup, the elastic layer can play a good role in isolating the path of the noise transmitted into the stirring cup, thereby reducing the noise in the stirring cup of the food processing machine and playing a role in absorbing vibration and reducing noise; the distance that the elastic layer wrapped up the arbor along the arbor axial is b, and 0.2mm is less than or equal to b and is less than or equal to 10mm, through selecting the distance of suitable elastic layer in arbor axial parcel, can guarantee the isolation to the noise of arbor and rigid inner wall direct collision or indirect collision product, can also avoid the elastic layer to follow the effect is poor is kept apart to the undersize of distance that arbor axial parcel was separated, or the elastic layer is followed the distance of arbor axial parcel is too big leads to the fact material extravagant, with high costs.

2. In order to better prevent noise generated by vibration of the cutter shaft in the shaft sleeve from being transmitted to the stirring cup, the elastic layer annularly wraps the cutter shaft in the scheme, and the arrangement is that the noise generated by vibration of the cutter shaft in the shaft sleeve is sealed to the transmission path of the stirring cup or the gap of the transmission path is reduced, specifically, the elastic layer is in clearance fit with the cutter shaft, the fit clearance is C, and C is more than or equal to 0.1mm and less than or equal to 1mm, and the elastic layer and the cutter shaft are in clearance fit; when the elastic layer and the knife shaft are fitted, namely the elastic layer is sealed with the knife shaft, the path of noise generated by vibration of the knife shaft in the shaft sleeve to the stirring cup can be completely sealed, so that the noise in the stirring cup is reduced to the minimum, and the use feeling of a user is effectively improved.

3. When the food processor works, the blade of the crushing cutter is easy to vibrate due to high-speed rotation, so that the blade has a certain swinging amplitude in the up-down direction, the swinging of the blade can generate a larger noise problem, and simultaneously, the blade can be driven to deviate from the axial direction of the blade shaft to enable the blade shaft to collide with the shaft sleeve, so that the concentricity matching of the blade shaft and the shaft sleeve is poorer, and the larger noise is generated Inhale the sound, separate the effect of making an uproar, can effectively reduce the noise that the wing of a knife vibration produced, in addition, can improve the concentricity of arbor and axle sleeve through the amplitude of fluctuation that reduces the wing of a knife, reduce the collision of arbor and axle sleeve, the source that can the noise abatement produce on the one hand, on the other hand, the concentricity of arbor and axle sleeve improves and can effectively improve transmission efficiency, reduces energy loss.

4. In order to strengthen the matching of the vibration damping piece and the blade, the top wall of the vibration damping piece is in clearance fit or fitting fit with the lower side wall of the root of the blade; when the top wall of the vibration damping piece is in fit with the lower side wall of the root part of the blade, when the blade rotates, the blade can slightly swing to reduce the swing amplitude through the vibration damping effect of the vibration damping piece, so that the swing amplitude of the blade can be reduced to the greatest extent, and the concentricity of the cutter shaft and the shaft sleeve can be better ensured; when damping piece roof and wing root downside lateral wall clearance fit, it is specific, the clearance between damping piece and the wing root downside is a, a is less than or equal to 2mm, the wing is less at the amplitude of oscillation, because of the noise that the wing swing produced is less, it is more weak to fall the demand of making an uproar, so, through being provided with the clearance at damping piece upside and wing root downside, avoid the wing just to produce the oppression to the damping piece when the amplitude of oscillation is less, on the other hand, can reduce the wing and to the oppression power of damping piece when the amplitude of oscillation is the biggest through being provided with the clearance, thereby reduce the wearing and tearing of the wing to the damping piece, promote the life of damping piece.

5. In order to better ensure the supporting effect of the vibration damping piece on the cutter wing, the structural strength of the vibration damping piece and the vibration damping effect of the vibration damping piece are considered, so that in order to ensure the structural strength of the vibration damping piece support, the section of the vibration damping piece is set to be a structure with a small top and a large bottom, the bottom supporting area of the vibration damping piece is large, and the structural strength is high; similarly, the section of the vibration damping part is set to be in a structure with a small top and a large bottom, which is also beneficial to improving the vibration damping effect, namely, the larger the swing amplitude of the blade is, the larger the compression amount of the vibration damping part is, so that the supporting part can provide larger supporting force for the blade when the swing amplitude of the blade is large, and the supporting effect of the vibration damping part on the blade is ensured, specifically, the section of the vibration damping part is in a horn shape with an upward opening, the vibration damping part comprises a circular side wall concentric with the cutter shaft, the circular side wall is arranged to deviate from the cutter shaft along the direction of the cutter shaft to the root of the blade, namely, the opening; or the section of the vibration damping part is in a shape of a Chinese character 'ba', the vibration damping part comprises a circular side wall concentric with the cutter shaft, the circular side wall is arranged close to the cutter shaft along the direction of the cutter shaft to the root part of the blade, namely, the opening of the circular side wall is in a shape of a small top and a big bottom; or the vibration damping part comprises a circular side wall concentric with the cutter shaft, the section of the circular side wall is in an isosceles triangle shape, namely the bottom center and the top center of the circular side wall are on the same vertical line.

6. Damping spare and wing root downside lateral wall fitting surface are equipped with the wearing layer, through set up the wearing layer on the damping spare, and the effect is the wearability of strengthening the damping spare surface, and extension damping spare friction life can be understood, and the setting mode of wearing layer has the multiple, can be at damping spare surface spraying one deck wear-resistant coating, also can be at the attached one deck wearing material in damping spare surface.

Drawings

The invention is described in further detail below with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a food processor according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the stirring cup according to the first embodiment of the present invention.

Fig. 3 is a schematic structural view of the crushing cutter, the cutter head and the shaft sleeve according to the first embodiment of the present invention.

Fig. 4 is a schematic structural view of the assembly of the crushing cutter, the cutter head and the shaft sleeve according to the first embodiment of the present invention.

Fig. 5 is a partial enlarged view of a1 indicated in fig. 4.

Fig. 6 is a partial enlarged view of a2 indicated in fig. 5.

Fig. 7 is a schematic structural diagram of the shaft sleeve according to the first embodiment of the present invention.

Fig. 8 is a partial enlarged view of a3 indicated in fig. 7.

Fig. 9 is another schematic structural diagram of the shaft sleeve according to the first embodiment of the present invention.

Fig. 10 is a schematic structural view illustrating the assembly of the rigid inner wall, the rigid outer wall and the elastic layer according to the first embodiment of the present invention.

Fig. 11 is a schematic structural view of the shaft sleeve according to the second embodiment of the present invention.

Fig. 12 is a schematic structural view of the shaft sleeve according to the third embodiment of the present invention.

Fig. 13 is a schematic structural diagram of the shaft sleeve according to the fourth embodiment of the present invention.

The corresponding reference numbers for the component names in the figures are as follows:

1. a stirring cup; 11. mounting holes; 2. a crushing knife; 21. a blade; 22. a cutter shaft; 3. a shaft sleeve; 31. a rigid inner wall; 311. an upper positioning ring; 312. hanging rubber ribs; 313. hanging a glue hole; 32. a rigid outer wall; 33. an elastic layer; 331. an elastic ring; 3311. an accommodating cavity; 332. sealing the ribs; 333. a support member; 4. a cutter head; 5. A wear layer; 61. oil sealing; 62. an isolation gasket; 63. a ball bearing; 7. a machine base.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments represent only possible variations, individual components and functions are optional unless explicitly required, and that herein the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed, for the purpose of making apparent the objects, aspects and advantages of embodiments of the present invention, which will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The first embodiment is as follows:

in the exemplary embodiment of the present invention, as shown in fig. 1 to 10, the embodiment of the present invention provides a food processor with good vibration damping effect, as shown in fig. 1 and 2, the food processor includes a frame 7, a motor (not shown in the drawings), a stirring cup 1 mounted on the frame and a crushing knife 2 mounted at the bottom of the stirring cup 1, the crushing knife 2 includes a blade 21 and a knife shaft 22, the bottom of the stirring cup 1 is provided with a mounting hole 11 for mounting the shaft sleeve 3, and the knife shaft 22 passes through the shaft sleeve 3 and cooperates with the motor in a transmission manner of the motor shaft.

In order to ensure concentricity of the arbor 22 and the sleeve 22, as shown in fig. 3, the sleeve 3 includes a rigid inner wall 31 for surrounding the arbor 21 to limit the arbor 21, a rigid outer wall 32 fitted to the mounting hole 11, and an elastic layer 33 for spacing the rigid inner wall 31 and the rigid outer wall 32.

In order to isolate the transmission of noise, as shown in fig. 4, in the present embodiment, the elastic layer 33 wraps the top of the rigid inner wall 31 from the upper side to be annularly matched with the cutter shaft 22, the elastic layer 33 is provided with an elastic ring 331 for wrapping the top of the rigid inner wall 31 from the upper side, i.e. the elastic ring 331 wraps the top of the rigid inner wall 31 from the upper side to be annularly matched with the cutter shaft 22, so that when the food processor is in operation, because the elastic layer 33 wraps the top of the rigid inner wall 31 from the upper side (the elastic ring 331 wraps the top of the rigid inner wall 31 from the upper side), the vibration generated by the cutter shaft 22 and the rigid inner wall 31 can be transmitted into the stirring cup 1 through the elastic layer 33 located on the upper side of the rigid inner wall 31, the elastic layer 33 adopted in the present embodiment has an elastic effect and can play a role in absorbing vibration, so that when the noise of, the elastic layer 33 can provide a good isolation effect on the path of the noise transmitted into the mixing cup 1, thereby reducing the noise inside the mixing cup 1 of the food processor and achieving the effects of absorbing vibration and reducing noise.

As shown in fig. 4, the distance that the elastic layer 33 wraps the knife shaft 22 along the axial direction of the knife shaft 22 is b, that is, the distance that the elastic ring 331 wraps the knife shaft 22 along the axial direction of the knife shaft 22 is b, b is not less than 0.2mm and not more than 10mm, and by selecting a suitable distance that the elastic layer 33 wraps in the axial direction of the knife shaft 22, the isolation of noise caused by direct collision or indirect collision of the knife shaft 22 and the rigid inner wall 31 can be ensured, and the isolation effect that the distance that the elastic layer 33 wraps along the axial direction of the knife shaft 22 is too small and poor or the distance that the elastic layer 33 wraps along the axial direction of the knife shaft 22 is too large.

In order to better prevent noise generated by vibration of the cutter shaft 22 in the shaft sleeve 3 from being transmitted to the stirring cup 1, the cutter shaft 22 is annularly wrapped by the elastic layer 33 in the scheme, namely the cutter shaft 22 is annularly wrapped by the elastic ring 331 in the scheme, and by the arrangement, the noise generated by vibration of the cutter shaft 22 in the shaft sleeve 3 is sealed or gaps of a transmission path are reduced to the transmission path of the stirring cup 1.

Specifically, the elastic layer 33 is in clearance or sealing fit with the knife shaft 22, in this embodiment, the elastic ring 331 is in clearance or sealing fit with the knife shaft 22.

When elastic layer 33 and arbor 22 are sealed to cooperate, in this scheme, when elastic ring 331 and arbor 22 are sealed to cooperate, can completely seal up the route of the noise of arbor 22 vibration production in axle sleeve 3 to stirring cup 1 transmission, make stirring cup 1 internal noise reduce to minimum, effectively promote user's use impression.

When elastic layer 33 and arbor 22 clearance fit, in this scheme, as shown in fig. 5, during elastic ring 331 and arbor 22 clearance fit scheme, the fit clearance is C, 0.1mm is less than or equal to C and is less than or equal to 1mm, elastic layer and arbor clearance fit scheme, through selecting suitable fit clearance to C, the gap of noise to stirring cup 1 transmission that arbor 22 vibrated the production in axle sleeve 3 has been reduced on the one hand, also can avoid elastic ring 331 and arbor 22 too much to collide simultaneously and lead to wearing and tearing fast, effectively prolong elastic ring 331's life.

When the food processor works, the blade 21 of the crushing cutter 2 is easy to vibrate due to high-speed rotation, so that the blade 21 has a certain swing amplitude in the up-down direction, the swing of the blade 21 can generate a larger noise problem, and simultaneously, the blade 22 can be driven to deviate from the axial direction of the blade 22, so that the blade 22 collides with the shaft sleeve 3, the concentricity of the blade 22 and the shaft sleeve 3 is poorer to be matched, and the larger noise is generated.

In the present embodiment, as shown in fig. 5 to 7, the elastic layer 33 extends upward to form a damping piece 333, the damping piece 333 is used to cooperate with the lower sidewall of the root of the blade 21 to limit the swing range of the crushing cutter during rotation, that is, the shaft sleeve 3 is provided with the damping piece 333 cooperating with the lower sidewall of the root of the blade 21, when the blade 21 has a certain swing range, the lower side of the root of the blade 21 first contacts the damping piece 333 to generate a pressing force on the damping piece 333, and similarly, the damping piece 333 generates an upward driving force on the root of the blade 21, so that the swing range of the blade 21 can be reduced by the buffer action of the damping piece 333, and therefore, the damping piece 333 provided on the lower side of the root of the blade 21 has vibration absorbing, sound absorbing and noise insulating actions, and can effectively reduce the noise generated by the vibration of the blade 21.

In addition, the concentricity of the cutter shaft 22 and the shaft sleeve 3 can be improved by reducing the swing amplitude of the blade 21, the collision between the cutter shaft 22 and the shaft sleeve 3 is reduced, on one hand, the source of noise can be reduced, on the other hand, the concentricity of the cutter shaft 22 and the shaft sleeve 3 is improved, the transmission efficiency can be effectively improved, and the energy loss is reduced.

In order to strengthen the matching of the vibration damping piece 333 and the blade 21, the top wall of the vibration damping piece 333 is in clearance or fit matching with the lower side wall of the root part of the blade 21; when the top wall of the vibration damping piece 333 is fitted and matched with the lower side wall of the root part of the blade 21, namely, the vibration damping piece is in sealing fit, when the blade 21 rotates, the slight swing is generated, the swing amplitude can be reduced through the vibration damping effect of the vibration damping piece 333, the swing amplitude of the blade 21 can be reduced to the greatest extent, and the concentricity of the cutter shaft 22 and the shaft sleeve 3 can be better ensured.

When the top wall of the vibration damping piece 333 is in clearance fit with the lower side wall of the root of the blade 21, as shown in fig. 5, the clearance between the vibration damping piece 333 and the lower side of the root of the blade 21 is a, a is not more than 2mm, the swing amplitude of the blade 21 is small, the noise generated by the swing of the blade 21 is small, and the noise reduction requirement is weak, so the clearance is arranged between the upper side of the vibration damping piece 333 and the lower side of the root of the blade 21, so that the blade 21 is prevented from pressing the vibration damping piece 333 when the swing amplitude is small, on the other hand, the pressing force of the blade 21 on the vibration damping piece 333 when the swing amplitude is maximum can be reduced by arranging the clearance, the abrasion of the blade.

In order to better ensure the supporting effect of the vibration damping piece 333 on the blade 21, the structural strength of the vibration damping piece 333 is considered, and the vibration damping effect of the vibration damping piece 333 is also considered, so that in order to ensure the structural strength of the vibration damping piece 333, the cross section of the vibration damping piece 333 is set to be a structure with a small top and a large bottom, the bottom supporting area of the vibration damping piece 333 is large, and the structural strength is high.

Similarly, the structure that the section of the damping piece 333 is small at the top and large at the bottom is also beneficial to improving the damping effect, that is, the larger the swing amplitude of the blade 21 is, the larger the compression amount of the damping piece 333 is, so that the supporting piece can provide larger supporting force for the blade 21 when the swing amplitude of the blade 21 is larger, and the supporting effect of the damping piece 333 on the blade 21 can be ensured.

Specifically, the section of the vibration damping member 333 is in a horn shape with an upward opening, the vibration damping member 333 includes an annular side wall concentric with the cutter shaft 22, and the annular side wall is arranged away from the cutter shaft 22 in the direction from the cutter shaft 22 to the root of the blade 21, that is, the opening of the annular side wall is in a shape of a large top and a small bottom.

As shown in fig. 7 and 8, a wear-resistant layer 5 is provided on a mating surface of the damping member 333 and the lower sidewall of the root portion of the blade 21, and the wear-resistant layer 5 is provided on the damping member 333 to enhance the wear resistance of the surface of the damping member 333 and prolong the friction life of the damping member 333, it can be understood that there are various ways of providing the wear-resistant layer 5, and a layer of wear-resistant paint may be sprayed on the surface of the damping member 333, or a layer of wear-resistant material may be attached to the surface of the damping member 333.

In this application, elastic layer 33 upside upwards extends and forms damping piece 333, through with damping piece 333 and elastic layer 33 integrated into one piece to avoid causing damping piece 333 to install the problem that the degree of difficulty is big, with high costs, effectively promote the structural strength of damping piece 333, avoid damping piece 333 to follow wing 21 and rotate.

In order to further improve the wrapping effect of the elastic ring 331 on the top of the rigid inner wall 31, as shown in fig. 5, the rigid inner wall 31 comprises an upper positioning ring 311, the upper positioning ring 311 is inserted into the elastic ring 331 so as to limit the position of the cutter shaft 22, the upper positioning ring 311 is inserted into the elastic ring 331, the elastic ring 331 is used for wrapping the top, the bottom and the periphery of the rigid inner wall 31 in an all-dimensional manner, namely, the upper positioning ring 311 is wrapped in an all-dimensional manner, and therefore when vibration generated between the cutter shaft 22 and the rigid inner wall 31 is transmitted into the stirring cup 1, all directions of noise transmission are isolated through the all-dimensional wrapping of the upper positioning ring 311, and noise transmission is better isolated.

In addition, the upper positioning ring 311 is inserted into the elastic ring 331, so that the structural strength of the elastic ring 331 can be effectively improved, when the food processor works, the cutter shaft 22 vibrates and contacts with the elastic ring 331, and because the upper positioning ring 311 is arranged in the elastic ring 331, the cutter shaft 22 generates compression in a small range on the elastic ring 331, on one hand, the elastic ring 331 can ensure that the cutter shaft 22 does not deviate from the axial direction of the cutter shaft 22 too much, on the other hand, the vibration of the cutter shaft 22 can be weakened, and the effect of reducing noise is achieved.

Further, for better spacing arbor 22, go up holding ring 311 place plane and arbor 22's axial vertical, during arbor 22 vibrates, because of last holding ring 311 passes through elastic ring 331 and arbor 22 contact, go up holding ring 311 and can effectively play the effect of support, the vibration range of reduction arbor 22 that can be better, noise reduction from the root cause that the noise produced promotes user experience.

In order to enhance the sealing between the shaft sleeve 3 and the bottom of the stirring cup 1 and reduce noise, the bottom of the stirring cup 1 is provided with a cutter head 4, and a mounting hole 11 is formed in the cutter head 4.

In order to seal the cutter disc 4, as shown in fig. 6, the elastic layer 33 is provided with a sealing rib 332 matched with the cutter disc 4, and by arranging the sealing rib 332, when the shaft sleeve 3 is pressed into the cutter disc 4, the sealing rib 332 can be matched with an opening of the cutter disc 4, namely, the sealing rib 332 is matched with the cutter disc 4 at the mounting hole 11, so that the effect of sealing the opening of the cutter disc 4 can be achieved, and a waterproof sealing effect is achieved.

In addition, the opening of the cutter head 4 is matched with the sealing rib 332, so that the hard material is contacted with the flexible material, and the sealing rib 332 also plays a role in damping and absorbing vibration of the shaft sleeve 3.

Further, in order to simplify the manufacturing process of the elastic layer 33, the sealing rib 332 is formed by reversely extending the elastic ring 331, the sealing rib 332 and the elastic ring 331 adopt an integrated scheme at a close vertical height, so that the strength of the fitting is improved, in addition, the elastic layer 33 comprises the elastic ring 331 and the sealing rib 332, so that too many small fittings are arranged in the shaft sleeve 3, and the problems of high installation difficulty and high cost of the shaft sleeve 3 and the cutter head 4 are avoided.

Specifically, as shown in fig. 6, the upper surface of the elastic ring 331 protrudes from the upper surface of the matching part of the cutter disc 4 and the sealing rib 332, so that when the food processor works, the blade 21 is easy to vibrate due to high-speed rotation, and a certain swing amplitude exists up and down; on the other hand, the upper surface of the elastic ring 331 protrudes from the matching position of the cutter disc 4 and the sealing rib 332, so that the cutter disc 4 can be prevented from being touched when the blades 21 swing, the blades 21 are prevented from being in hard contact with the cutter disc 4 under the condition of high-speed rotation, and the noise is reduced.

Preferably, the height of the upper surface of the elastic ring protruding out of the matching part of the cutter head and the sealing rib is d2, and d2 is more than or equal to 0.5mm and less than or equal to 5 mm.

The elastic layer 33 is a silica gel ring, the silica gel ring is integrally injected between the rigid inner wall 31 and the rigid outer wall 32, the rigid inner wall 31 and the rigid outer wall 32 are connected and positioned through the silica gel ring, the concentricity of the rigid inner wall 31 and the rigid outer wall 32 can be improved by integrally injecting the silica gel ring between the rigid inner wall 31 and the rigid outer wall 32, the rigid inner wall 31 and the rigid outer wall 32 which are concentrically arranged can ensure the concentricity between the mounting hole 11 and the cutter shaft 22 or the bearing, further the coaxial arrangement between the motor output shaft and the cutter shaft 22 is ensured, the abrasion between the cutter shaft 22 and the rigid inner wall 31 or the silica gel ring is effectively reduced, on the other hand, the power transmission efficiency can be effectively improved by ensuring the coaxial arrangement between the motor output shaft and the cutter shaft 22.

In order to ensure the noise reduction and concentric correction effects of the elastic layer 33, the thickness of the elastic layer 33 is d1, d1 is more than or equal to 0.8mm and less than or equal to 5mm, the elastic layer 33 has the vibration reducing effect on a food processor, and the self-correction of the non-concentricity effect when the shaft of the crushing cutter 2 is not concentric with the motor shaft is realized, the noise insulation and noise absorption effects of the elastic layer 33 are related to the d1 value of the thickness of the elastic layer 33, the thicker the elastic layer is theoretically, the better the food processor is in consideration of space limitation, and in the application, the d1 is more than or equal to 0.8mm and less.

It can be understood that, in order to ensure the fixation of the rigid inner wall 31, the rigid outer wall 32 and the elastic layer 33, a fixing structure may be provided on the rigid inner wall and the rigid outer wall, as shown in fig. 10, and the rigid inner wall is provided with a glue hanging rib 312 and a glue hanging hole 313.

It can be understood that, the rigid inner wall 31 may be provided with components for cooperating with the rigid inner wall 31 and the cutter shaft, as shown in fig. 9, an oil seal 61, an isolation gasket 62 and a ball bearing 63 are provided in the rigid inner wall 31, and before the ball bearing 63 is pressed into the shaft sleeve 3, a layer of adhesive is also coated on an outer ring of the ball bearing 63, and the adhesive is coated to prevent the fixing from loosening due to the reasons of machining error, high temperature deformation, cold and hot shrinkage, etc. of the parts.

Example two:

the main difference between this embodiment and the first embodiment is that the lower side of the elastic ring 331 of the food processor of this embodiment is recessed upward to form a receiving cavity 3311 for receiving the upper positioning ring 311.

Specifically, as shown in fig. 11, in order to further improve the wrapping effect on the top of the rigid inner wall 31, the rigid inner wall 31 of the present solution includes an upper positioning ring 311, a containing cavity 3311 for containing the upper positioning ring 311 is formed in the lower side of the elastic ring 331 in an upward concave manner, the elastic ring 331 wraps the top of the rigid inner wall 31 from the upper side and around, i.e., the upper positioning ring 311 wraps from the upper side and around, when the vibration generated between the cutter shaft 22 and the rigid inner wall 31 is transmitted into the stirring cup 1, the noise is isolated upward and transmitted around by wrapping the upper positioning ring 311 from the upper side and around, and the noise is better isolated.

In addition, the upper positioning ring 311 is arranged in the accommodating cavity 3311, so that the structural strength of the elastic ring 331 can be effectively improved, when the food processor works, the cutter shaft 22 vibrates and is in contact with the elastic ring 331, and because the positioning ring is arranged in the accommodating cavity 3311 of the elastic ring 331, the cutter shaft 22 can compress the elastic ring 331 within a small range, on one hand, the elastic ring 331 can ensure that the cutter shaft 22 does not deviate from the axial direction of the cutter shaft 22 too much, on the other hand, the vibration of the cutter shaft 22 can be weakened, and the effect of reducing noise is achieved.

The remaining aspects and effects of the food processor described in this embodiment are consistent with those of the embodiment, and will not be described herein again.

Example three:

the main difference between this embodiment and the first embodiment is that the cross section of the damping member 333 is in a shape of "eight".

As shown in fig. 12, specifically, the cross section of the vibration damper 333 is in a shape of a "v", the vibration damper 333 includes an annular side wall concentric with the knife shaft 22, and the annular side wall is disposed close to the knife shaft 22 along the knife shaft 22 in the direction of the root of the blade 21, that is, the opening of the annular side wall is in a shape of a small top and a large bottom.

The remaining aspects and effects of the food processor described in this embodiment are consistent with those of the embodiment, and will not be described herein again.

Example four:

the main difference between this embodiment and the first embodiment is that the section of the annular side wall of the damping piece 333 is an isosceles triangle.

As shown in fig. 13, in detail, the vibration damper 333 includes a circular side wall concentric with the knife shaft 22, and the circular side wall has an isosceles triangle cross section, that is, the bottom center and the top center of the circular side wall are on the same vertical line.

The remaining aspects and effects of the food processor described in this embodiment are consistent with those of the embodiment, and will not be described herein again.

It should be understood by those skilled in the art that the embodiments of the present invention have been described above, but the embodiments are only for convenience of understanding, and are not intended to limit the embodiments of the present invention. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. The food processing machine is characterized in that the elastic layer wraps the rigid inner wall from the upper side, the top of the rigid inner wall is matched with the cutter shaft in an annular mode, the elastic layer axially wraps the cutter shaft, and the distance between the cutter shaft and the cutter shaft is b, wherein b is more than or equal to 0.2mm and less than or equal to 10 mm.

2. The food processor with good noise reduction effect as claimed in claim 1, wherein the elastic layer annularly wraps the cutter shaft, the elastic layer is in clearance fit with the cutter shaft, the fit clearance is C, and C is greater than or equal to 0.1mm and less than or equal to 1 mm.

3. The food processor with good noise reduction effect as claimed in claim 1, wherein the elastic layer annularly wraps the cutter shaft, and the elastic layer is fitted with the cutter shaft.

4. A noise reducing food processor as claimed in any one of claims 1 to 3, wherein the resilient layer extends upwardly to form a damping member for engaging with the lower sidewall of the root portion of the blade to limit the extent of the rotation of the crushing blade.

5. A food processor as claimed in claim 4, wherein the top wall of the damping member is in clearance or snug fit with the lower side wall of the root of the blade.

6. The food processor with good noise reduction effect according to claim 4, wherein the section of the vibration reduction part is in a horn shape with an upward opening, the vibration reduction part comprises a circular ring-shaped side wall concentric with the cutter shaft, and the circular ring-shaped side wall is arranged to deviate from the cutter shaft along the direction of the root of the cutter blade in the direction of the cutter shaft.

7. The food processor with the good noise reduction effect according to claim 4, wherein the section of the vibration reduction part is in a shape of a Chinese character 'ba', the vibration reduction part comprises a circular ring-shaped side wall concentric with the cutter shaft, and the circular ring-shaped side wall is arranged close to the cutter shaft along the direction of the cutter shaft to the root of the blade.

8. The food processor with good noise reduction effect according to claim 4, wherein the vibration reduction piece comprises a circular ring-shaped side wall concentric with the cutter shaft, and the section of the circular ring-shaped side wall is in an isosceles triangle shape.

9. The food processor with good noise reduction effect as claimed in claim 4, wherein the matching surface of the vibration damping piece and the lower side wall of the blade root is sprayed or adhered with a wear-resistant layer.

10. The food processor with good noise reduction effect as claimed in claim 4, wherein the gap between the vibration damping piece and the lower side wall of the blade root is a, a is less than or equal to 2 mm.

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