Micromotor special for kitchen direct current chopper

Abstract

The utility model discloses a micromotor special for a kitchen direct current chopper, relates to the field of micromotors, and solves the problem that the service life of the micromotor is affected due to high abrasion caused by temperature rise due to contact friction between a steel ball and a gasket in the prior art, and adopts the following scheme that the micromotor comprises the steel ball arranged at the tail end of a rotating shaft; an accommodating shell is assembled on the rear side of the stator sleeve, and a graphite sleeve is arranged in the accommodating shell; a liquid base located on the outer side of the graphite sleeve is fixedly installed on the inner side of the containing shell, a cooling cavity is formed between the liquid base and the graphite sleeve, and the cooling cavity is filled with ice water. According to the micromotor special for the kitchen direct-current chopper, the graphite sleeve is arranged on the inner side of the containing shell and can replace a spring gasket to make contact and rub with the graphite sleeve, the friction coefficient of graphite is small, and the graphite sleeve and the inner side space of the graphite sleeve can be always kept in a low-temperature state in cooperation with the arrangement that the inner side of the liquid feeding base is filled with ice water; the friction coefficient is always in a low state, and the friction loss is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of micromotors, in particular to a micromotors dedicated to kitchen DC choppers. Background Art

[0002] At present, kitchen choppers mainly use low-power AC series motors, but the existing low-power AC series motors use a bearing and a washer installed on the rotor shaft to match to resist the thrust transmitted to the rotor shaft by the gear when the motor is loaded;

[0003] After searching, the application with patent number CN202222086602.6 discloses a micromotor dedicated to a kitchen DC chopper; it belongs to the field of micromotor technology; its technical points include a stator assembly and a rotor assembly that cooperate with each other, a front bracket and a rear bracket are respectively connected to the two ends of the stator assembly, and the rotor assembly includes a rotating shaft, characterized in that the rear bracket is provided with a receiving cavity that cooperates with the rear end of the rotating shaft, and a bearing assembly that cooperates with the rotating shaft is provided at the opening of the receiving cavity; a steel ball is provided on the rear end face of the rotating shaft, and a spring steel gasket that cooperates with the steel ball is provided at the bottom of the receiving cavity; a worm segment is integrally formed at the front end of the rotating shaft, and a gear that cooperates with the worm segment is rotatably connected on the front bracket; when working under load, the axial force of the rotating shaft is directed toward the spring steel gasket and transmitted to the spring steel gasket by the steel ball;

[0004] The above application document reduces friction and increases service life by arranging a steel ball and a spring washer that rubs against it on the rear end of the rotating shaft. However, firstly, the friction contact between the steel ball and the spring washer during rapid rotation will generate a lot of noise and generate heat. As the temperature rises, the corresponding friction coefficient will also increase, which may affect the service life.

[0005] Therefore, we proposed a special micromotor for kitchen DC chopper. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a micromotor specifically for a kitchen DC chopper, which solves the problem that the existing contact friction between a steel ball and a gasket is prone to high wear due to temperature increase, thereby affecting its service life.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a micro motor for a kitchen DC chopper, comprising a stator sleeve and a rotor seat assembled therein, a rotating shaft is fixedly sleeved in the rotor seat, and a steel ball is fixedly installed at the tail end of the rotating shaft;

[0008] The rear side of the stator sleeve is equipped with a housing, and a graphite sleeve is arranged in the housing. The shape of the graphite sleeve is adapted to the steel ball, and the graphite sleeve is rotatably sleeved on the outside of the steel ball.

[0009] A liquid seat located outside the graphite sleeve is fixedly installed on the inner side of the accommodating shell, a cooling cavity is formed between the liquid seat and the graphite sleeve, and ice water is filled in the cooling cavity.

[0010] Preferably, the outer wall of the graphite sleeve is provided with ten groups of liquid grooves distributed in an annular shape and extending along the outer wall;

[0011] Among them, the provision of the liquid tank can increase the contact area between the ice water in the liquid seat and the graphite sleeve, thereby increasing the cooling effect on the graphite sleeve and avoiding the situation where the temperature of the graphite sleeve rises and thus affects the friction coefficient.

[0012] Preferably, the top side of the liquid seat is an open side and is arranged on the end surface of the accommodating shell, and a rubber sleeve made of plastic is clamped in the open side of the liquid seat;

[0013] Among them, the setting of the rubber sleeve can block the ice water inlet, and the ice water will leak out due to vibration during operation.

[0014] Preferably, a slot matching the edge specification of the bottom end of the graphite sleeve is provided on the bottom side of the liquid seat, and the liquid seat is provided with the sealing sleeve through the slot;

[0015] Among them, the sealing sleeve-type clamping arrangement at the bottom end of the liquid seat can prevent ice water from entering the bottom side stator sleeve and rotor seat and causing damage thereto.

[0016] Preferably, both ends of the rotating shaft are assembled on the stator sleeve and the inner side of the accommodating shell through bearing rings;

[0017] Among them, the setting of the bearing ring can reduce the friction when the shaft rotates, thereby ensuring work efficiency.

[0018] Preferably, a sound-absorbing cotton layer with an annular patch is filled between the accommodating shell and the liquid seat;

[0019] Among them, the setting of the sound-absorbing cotton layer can reduce friction noise and increase the comfort of use.

[0020] The utility model provides a micro motor for a kitchen DC chopper, which has the following beneficial effects:

[0021] The micromotor specially used for the kitchen DC chopper can contact and rub with the graphite sleeve by arranging a graphite sleeve inside the accommodating shell instead of a spring gasket. The friction coefficient of graphite is relatively small. With the arrangement of filling ice water inside the upper liquid seat, the graphite sleeve and the inner space thereof can always be kept at a low temperature during operation, thereby ensuring that the friction coefficient thereof is always at a low state, greatly reducing friction loss. Meanwhile, the material thereof and the arrangement of the outer sound-absorbing cotton layer can ensure low-noise operation, thus solving the problem that the existing contact friction between the steel ball and the gasket is prone to high wear due to temperature increase, thereby affecting the service life thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the rear side of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the accommodating shell of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of a cross section of the accommodating shell of the utility model.

[0026] In the figure: 1. stator sleeve; 2. rotating shaft; 3. containing shell; 4. rubber sleeve; 5. rotor seat; 6. steel ball; 7. graphite sleeve; 8. liquid seat. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 The embodiment of the utility model provides a technical solution: a micromotor dedicated to a kitchen DC chopper, comprising a stator sleeve 1 and a rotor seat 5 assembled therein, wherein a rotating shaft 2 is fixedly sleeved in the rotor seat 5, and a steel ball 6 is fixedly installed at the tail end of the rotating shaft 2; a receiving shell 3 is assembled on the rear side of the stator sleeve 1, and a graphite sleeve 7 is arranged in the receiving shell 3, the shape of the graphite sleeve 7 is adapted to the steel ball 6, and the graphite sleeve 7 is rotatably sleeved on the outside of the steel ball 6; a liquid seat 8 located on the outside of the graphite sleeve 7 is fixedly installed on the inner side of the receiving shell 3, and a cooling chamber is formed between the liquid seat 8 and the graphite sleeve 7, and the cooling chamber is filled with ice water;

[0029] Among them, the kitchen DC chopper dedicated micromotor, through the setting of the graphite sleeve 7 inside the accommodating shell 3, can contact and rub with the graphite sleeve 7 instead of the spring gasket. The friction coefficient of graphite is small. Combined with the setting of filling ice water inside the upper liquid seat 8, the graphite sleeve 7 and the inner space thereof can always be kept in a low temperature state during operation, ensuring that its friction coefficient is always in a low state, greatly reducing friction loss. At the same time, the material and the setting of the outer sound-absorbing cotton layer can ensure low-noise operation, solving the problem that the existing contact friction between the steel ball 6 and the gasket is prone to high wear due to temperature increase, thereby affecting its service life.

[0030] Embodiment 2: Ten groups of liquid grooves are arranged on the outer wall of the graphite sleeve 7 in a circular shape and extend along the outer wall; wherein, the arrangement of the liquid grooves can increase the contact area between the ice water in the liquid seat 8 and the graphite sleeve 7, thereby increasing the cooling effect on the graphite sleeve 7, and avoiding the situation where the temperature of the graphite sleeve 7 rises and affects the friction coefficient.

[0031] The top side of the liquid seat 8 is an open side and is arranged on the end face of the accommodating shell 3, and a rubber sleeve 4 made of plastic is clamped in the open side of the liquid seat 8; wherein, the setting of the rubber sleeve 4 can block the ice water inlet, and when it is working, the ice water will leak out due to vibration.

[0032] A card slot matching the bottom edge specification of the graphite sleeve 7 is opened on the bottom side of the liquid seat 8, and the liquid seat 8 is equipped with the liquid seat 8 through the card slot and the sealing sleeve; wherein, the sealing sleeve-type card-mounted arrangement at the bottom end of the liquid seat 8 can prevent ice water from entering the bottom side stator sleeve 1 and rotor seat 5 and causing damage thereto.

[0033] Both ends of the rotating shaft 2 are assembled on the stator sleeve 1 and the inner side of the accommodating shell 3 through bearing rings; wherein, the arrangement of the bearing rings can reduce the friction when the rotating shaft 2 rotates, thereby ensuring working efficiency.

[0034] A sound-absorbing cotton layer with an annular patch is filled between the accommodating shell 3 and the liquid seat 8; wherein, the provision of the sound-absorbing cotton layer can reduce friction noise and increase the comfort of use.

[0035] The working principle and use process of the utility model: by setting the graphite sleeve 7 and the liquid seat 8 inside the accommodating shell 3, the graphite sleeve 7 can be used to replace the spring gasket to contact the steel ball 6, and combined with the filling of ice water inside the upper liquid seat 8, it is always in a low temperature and low friction coefficient state, reducing friction loss and increasing service life.

[0036] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A micromotor for a kitchen DC chopper, comprising a stator sleeve (1) and a rotor seat (5) mounted therein, wherein a rotating shaft (2) is fixedly mounted in the rotor seat (5), and a steel ball (6) is fixedly mounted at the rear end of the rotating shaft (2); Features: The rear side of the stator sleeve (1) is equipped with a housing (3), and a graphite sleeve (7) is arranged in the housing (3). The shape of the graphite sleeve (7) is compatible with the steel ball (6), and the graphite sleeve (7) is rotatably sleeved on the outside of the steel ball (6); A liquid seat (8) located outside the graphite sleeve (7) is fixedly mounted on the inner side of the accommodating shell (3); a cooling chamber is provided between the liquid seat (8) and the graphite sleeve (7), and the cooling chamber is filled with ice water.

2. A micromotor for a kitchen DC chopper according to claim 1, Features: The outer wall of the graphite sleeve (7) is provided with ten groups of liquid grooves distributed in an annular shape and extending along the outer wall.

3. A micromotor for a kitchen DC chopper according to claim 1, Features: The top side of the liquid seat (8) is an open side and is arranged on the end surface of the accommodating shell (3), and a rubber sleeve (4) made of plastic is clamped in the open side of the liquid seat (8).

4. A micromotor for a kitchen DC chopper according to claim 1, Features: A slot matching the specifications of the bottom edge of the graphite sleeve (7) is provided on the bottom side of the liquid seat (8), and the liquid seat (8) is provided with the liquid seat (8) via the slot and the sealing sleeve.

5. A micromotor for a kitchen DC chopper according to claim 1, Features: The two ends of the rotating shaft (2) are assembled on the inner side of the stator sleeve (1) and the accommodating shell (3) through bearing rings.

6. A micromotor for a kitchen DC chopper according to claim 1, Features: A sound-absorbing cotton layer with an annular patching is filled between the accommodating shell (3) and the liquid seat (8).

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