Electric brush mounting structure of electrically-driven stirring mechanism

Abstract

The utility model relates to an electric brush mounting structure of an electrically driven stirring mechanism in the technical field of electric stirring mechanisms, which comprises a motor driving part, a first stirring transmission part and a second stirring transmission part, a mounting groove is formed in the side, close to the motor driving part, of the second shell, an electric brush assembly is arranged in the mounting groove, a protective sleeve shell is arranged between the electric brush assembly and the mounting groove and is made of a high-temperature-resistant material, and the electric brush assembly is fixedly connected into the mounting groove through the protective sleeve shell; the end portion of the electric brush assembly can extend into the second shell to be electrically connected with the rotor, the protective sleeve shell can effectively isolate the electric brush assembly from the second shell to prevent high temperature generated by the electric brush assembly from corroding the second shell, and the structure is made of a high-temperature-resistant material through the protective sleeve shell which is a local installation part, so that the structure is simple in structure and convenient to use. Investment of overall high-temperature-resistant materials is effectively reduced, and good economic benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric stirring mechanisms, in particular to a brush installation structure of an electric driven stirring mechanism. Background Art

[0002] The food mixer is a full gear transmission structure, and its power transmission system has a high standard design, high strength, high technical requirements, smooth operation, and is durable. The food mixer can be used to stir cream, cake batter, fillings, beat eggs, and make dough, etc.

[0003] The mixing mechanism inside the existing food mixer is generally designed with a gear transmission structure, and then the corresponding motor is purchased for power output connection. However, the existing food mixer requires a reasonable design, neat appearance, and overall development in the direction of small size and light weight. Therefore, in response to these current situations, our company has developed an integrated two-way drive mixing mechanism, the purpose of which is to optimize the volume of the mixing mechanism, reduce the investment in the traditional motor end cover or shell, and achieve lightweight and miniaturization improvements while ensuring that the power output remains unchanged.

[0004] Since the internal structure of the motor is integrated through the outer shell of the stirring transmission part on both sides, the brush assembly in the motor needs to be assembled and designed together with the outer shell of the stirring transmission part. During the operation of the brush motor, it has the defects of high temperature and easy spark generation. The general solution is to use high temperature resistant materials for the outer shell of the stirring transmission part as a whole to solve the defects of the above-mentioned brush motor, but the overall investment cost is large and it does not have economic benefits. Therefore, in view of these current situations, it is necessary to develop a brush installation structure for an electric drive stirring mechanism to meet the needs of actual use. Utility Model Content

[0005] The utility model aims to provide a brush installation structure for an electrically driven stirring mechanism, which is used to solve the technical problem that the temperature is high and sparks are easily generated during the operation of the brush motor, and the overall high-temperature resistant material design of the stirring transmission part's shell does not have the defect of economic benefits.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A brush mounting structure of an electric-driven stirring mechanism comprises a motor driving part, a first stirring transmission part and a second stirring transmission part, the first stirring transmission part comprises a first shell and a first transmission assembly, the second stirring transmission part comprises a second shell and a second transmission assembly, the motor driving part comprises a stator and a rotor, the interior of the stator is a hollow structure, and the rotor is rotatably arranged inside the stator, the two end surfaces of the stator are respectively fixedly connected to the first shell and the second shell, the two ends of the rotor are respectively movably connected to the first transmission assembly and the second transmission assembly, a mounting groove is provided on one side of the second shell close to the motor driving part, a brush assembly is provided inside the mounting groove, a protective shell is provided between the brush assembly and the mounting groove, the protective shell is made of high-temperature resistant material, the brush assembly is fixedly connected to the interior of the mounting groove through the protective shell, and the end of the brush assembly can extend to the interior of the second shell to be electrically connected to the rotor.

[0008] In the above description, as a further solution, the rotor includes a rotor core, a coil winding and an output shaft, the coil winding is wrapped around the inside of the rotor core, and the two ends of the output shaft are horizontally raised on both sides of the rotor core, and the output shaft is movably connected to the first transmission assembly and the second transmission assembly respectively.

[0009] In the above description, as a further solution, a commutator is provided at one end of the rotor core, the commutator is electrically connected to the coil winding, the commutator can extend to the inside of the second housing, and the commutator and the brush assembly are in contact and electrically conductive.

[0010] In the above description, as a further solution, the brush assembly includes a brush housing, a contact piece and a conductive spring piece. A plug-in slot is provided at the top of the brush housing, and both ends of the conductive spring piece are plugged and fixed to the plug-in slot. A spring is provided between the conductive spring piece and the top of the contact piece, and the two ends of the spring are respectively fixedly connected to the conductive spring piece and the top of the contact piece. The contact piece can be located inside the brush housing and move up and down through the spring, and the bottom end of the contact piece can extend to the bottom of the brush housing to contact the commutator for conduction.

[0011] In the above description, as a further solution, a first limiting protrusion and a second limiting protrusion protruding outward are respectively provided on the top and bottom sides of the brush housing, and a limiting groove matching the first limiting protrusion is provided at the top opening of the protective sleeve. When the brush housing is sleeved inside the protective sleeve, the first limiting protrusion is matched and embedded in the limiting groove, and the second limiting protrusion abuts against the bottom end surface of the protective sleeve.

[0012] In the above description, as a further solution, the first shell and the second shell are both provided with a rotating connection piece at one end close to the motor driving part, and the two ends of the output shaft are rotatably arranged inside the first shell and the second shell through the rotating connection piece.

[0013] In the above description, as a further solution, the rotating connecting member arranged in the first shell is composed of a rotating ball head, the surface area of ​​the rotating ball head is an arc-shaped structure, the center of the rotating ball head is a hollow structure, one end of the output shaft is plugged into the center of the rotating ball head, and the rotating ball head is rotatably connected to the first shell.

[0014] In the above description, as a further solution, the rotating connection member arranged in the second housing is composed of a bearing, one end of the output shaft is plugged into the bearing, and the output shaft is rotatably connected to the second housing through the bearing.

[0015] In the above description, as a further solution, the stator is provided with fastening bolts at the four corners of the rotor, and the corresponding connection points of the first shell and the second shell are provided with plug-in holes, and the two ends of the fastening bolts are respectively plugged into the plug-in holes of the first shell and the second shell, and are threadedly connected through fixing nuts.

[0016] The beneficial effects produced by the utility model are as follows:

[0017] The brush mounting structure of an electrically driven stirring mechanism of the present application reduces the end cover or housing for fixing the stator and the rotor in a traditional motor, and fixes the two end surfaces of the stator to the housings of the first stirring transmission part and the second stirring transmission part respectively. On the basis of the structure, a mounting groove is provided on the side of the second shell close to the motor driving part, and the brush assembly is fixedly connected to the inside of the mounting groove through a protective shell, wherein the protective shell is made of high-temperature resistant material. On the one hand, the protective shell made of high-temperature resistant material can effectively isolate the brush assembly from the second shell, and prevent the high temperature generated by the brush assembly from corroding the second shell; on the other hand, the structure adopts high-temperature resistant material through the protective shell, which is a local mounting part, so as to effectively reduce the overall investment in high-temperature resistant materials and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a brush installation structure of an electric drive stirring mechanism described in the utility model;

[0019] Figure 2 It is a structural exploded schematic diagram of a brush installation structure of an electric drive stirring mechanism described in the utility model;

[0020] Figure 3 It is a cross-sectional structural schematic diagram of a brush installation structure of an electric drive stirring mechanism described in the utility model;

[0021] Figure 4 It is a schematic diagram of the structural decomposition of a brush assembly in a brush installation structure of an electrically driven stirring mechanism according to the utility model;

[0022] Figure 5 It is a structural schematic diagram of a brush assembly in a brush installation structure of an electrically driven stirring mechanism according to the utility model at a side angle;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure along the AA direction in the figure;

[0024] Figure 7 for Figure 1 A schematic diagram of the partially enlarged structure of B in the middle;

[0025] In the figure: 1-motor drive unit, 11-stator, 12-rotor, 121-rotor core, 122-coil winding, 123-output shaft, 13-commutator, 2-first stirring transmission unit, 21-first shell, 22-first transmission assembly, 23-rotating ball head, 3-second stirring transmission unit, 31-second shell, 311-mounting groove, 32-second transmission assembly, 33-bearing, 4-fastening bolt, 5-fixing nut, 6-plug hole, 7-brush assembly, 71-brush housing, 711-plug slot, 712-first limiting protrusion, 713-second limiting protrusion, 72-protective shell, 721-limiting groove, 73-contact piece, 74-conductive spring, 75-spring. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0027] See also Figure 1-6The brush installation structure of an electric drive stirring mechanism specifically implemented in the present invention comprises a motor driving part 1, a first stirring transmission part 2 and a second stirring transmission part 3, wherein the first stirring transmission part 2 comprises a first shell 21 and a first transmission assembly 22, and the second stirring transmission part 3 comprises a second shell 31 and a second transmission assembly 32, the motor driving part 1 comprises a stator 11 and a rotor 12, the interior of the stator 11 is a hollow structure, and the rotor 12 is rotatably arranged inside the stator 11, and the two end surfaces of the stator 11 are respectively fixedly connected with the first shell 21 and the second shell 31, and the stator 11 is provided with fastening bolts 4 at the four corners of the rotor 12, and the corresponding connection points of the first shell 21 and the second shell 31 are provided with fastening bolts 4. There is a plug hole 6, and both ends of the fastening bolt 4 are respectively plugged into the plug holes 6 of the first shell 21 and the second shell 31, and are threadedly connected through the fixing nut 5. The two ends of the rotor 12 are respectively movably connected with the first transmission component 22 and the second transmission component 32. A mounting groove 311 is provided on the side of the second shell 31 close to the motor drive part 1, and a brush assembly 7 is arranged inside the mounting groove 311. A protective shell 72 is provided between the brush assembly 7 and the mounting groove 311. The protective shell 72 is made of high temperature resistant material. The brush assembly 7 is fixedly connected to the inside of the mounting groove 311 through the protective shell 72, and the end of the brush assembly 7 can extend to the inside of the second shell 31 to be electrically connected to the rotor 12.

[0028] Specifically, Figure 2-3 As shown, the rotor 12 includes a rotor core 121, a coil winding 122 and an output shaft 123. The coil winding 122 is wrapped around the inside of the rotor core 121. The two ends of the output shaft 123 are horizontally protruded on both sides of the rotor core 121. The output shaft 123 is movably connected to the first transmission component 22 and the second transmission component 32 respectively. A commutator 13 is provided at one end of the rotor core 121. The commutator 13 is electrically connected to the coil winding 122. The commutator 13 can extend to the inside of the second shell 31, and the commutator 13 is in contact with the brush assembly 7 for electrical conduction.

[0029] Specifically, the structure of the brush assembly 7 is as follows: Figure 4 As shown, the brush assembly 7 includes a brush housing 71, a contact piece 73 and a conductive spring piece 74. A plug-in slot 711 is provided at the top of the brush housing 71. Both ends of the conductive spring piece 74 are plugged and fixed to the plug-in slot 711. A spring 75 is provided between the conductive spring piece 74 and the top of the contact piece 73. Both ends of the spring 75 are fixedly connected to the top of the conductive spring piece 74 and the top of the contact piece 73 respectively. The contact piece 73 can be located inside the brush housing 71 through the spring 75 and move up and down. The bottom end of the contact piece 73 can extend to the bottom of the brush housing 71 to contact the commutator 13 for conduction.

[0030] Specifically, the installation structure between the brush assembly 7 and the protective housing 72 is as follows: Figure 4-6 As shown, the top and bottom sides of the brush housing 71 are respectively provided with a first limiting protrusion 712 and a second limiting protrusion 713 protruding outward, and the top opening of the protective shell 72 is provided with a limiting groove 721 matching the first limiting protrusion 712. When the brush housing 71 is sleeved inside the protective shell 72, the first limiting protrusion 712 is matched and embedded in the limiting groove 721, and the second limiting protrusion 713 abuts against the bottom end surface of the protective shell 72.

[0031] The first shell 21 and the second shell 31 are both provided with a rotating connecting piece at one end close to the motor drive unit 1, and the two ends of the output shaft 123 are rotatably arranged inside the first shell 21 and the second shell 31 through the rotating connecting piece respectively. The rotating connecting piece arranged in the first shell 21 is composed of a rotating ball head 23, and the surface area of ​​the rotating ball head 23 is an arc-shaped structure. The center of the rotating ball head 23 is a hollow structure. One end of the output shaft 123 is plugged into the center of the rotating ball head 23, and the rotating ball head 23 is rotatably connected to the first shell 21. The rotating connecting piece arranged in the second shell 31 is composed of a bearing 33, and one end of the output shaft 123 is plugged into the bearing 33, and the output shaft 123 is rotatably connected to the second shell 31 through the bearing 33.

[0032] By reducing the end cover or housing used to fix the stator 11 and the rotor 12 in the traditional motor, the two end surfaces of the stator 11 are fixedly connected to the housings of the first stirring transmission part 2 and the second stirring transmission part 3 respectively, and at the same time, the two ends of the rotor 12 are directly connected to the transmission components inside the first stirring transmission part 2 and the second stirring transmission part 3, so that an integrated structure is formed between the motor drive part 1, the first stirring transmission part 2 and the second stirring transmission part 3, the volume of the stirring mechanism is optimized, and the investment in the end cover or housing of the traditional motor is reduced. While ensuring that the power output remains unchanged, it has the advantages of lightweight and miniaturization, and is suitable for promotion in the field of food mixers.

[0033] The structural principle of a brush mounting structure of an electric drive stirring mechanism is as follows: on the basis of reducing the end cover or housing for fixing the stator 11 and the rotor 12 in the traditional motor, the two end surfaces of the stator 11 are respectively fixedly connected to the housings of the first stirring transmission part 2 and the second stirring transmission part 3, a mounting groove 311 is opened on the side of the second shell 31 close to the motor driving part 1, and the brush assembly 7 is fixedly connected to the inside of the mounting groove 311 through a protective shell 72, wherein the protective shell 72 is made of high temperature resistant material. On the one hand, the protective shell 72 made of high temperature resistant material can effectively isolate the brush assembly 7 from the second shell 31 to prevent the high temperature generated by the brush assembly 7 from corroding the second shell 31; on the other hand, the structure adopts high temperature resistant material through the protective shell 72, which is a local mounting part, so as to effectively reduce the overall investment in high temperature resistant materials and have good economic benefits.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A brush mounting structure of an electric drive stirring mechanism, comprising a motor drive unit, a first stirring transmission unit and a second stirring transmission unit, wherein the first stirring transmission unit comprises a first housing and a first transmission assembly, and the second stirring transmission unit comprises a second housing and a second transmission assembly, wherein the motor drive unit comprises a stator and a rotor, wherein the interior of the stator is a hollow structure, and the rotor is rotatably arranged inside the stator, wherein the two end surfaces of the stator are respectively fixedly connected to the first housing and the second housing, and the two ends of the rotor are respectively movably connected to the first transmission assembly and the second transmission assembly, wherein: A mounting groove is provided on one side of the second shell near the motor drive part, a brush assembly is provided inside the mounting groove, a protective shell is provided between the brush assembly and the mounting groove, the protective shell is made of high temperature resistant material, the brush assembly is fixedly connected to the inside of the mounting groove through the protective shell, and the end of the brush assembly can extend to the inside of the second shell to be electrically connected to the rotor.

2. The brush mounting structure of the electrically driven stirring mechanism according to claim 1, characterized in that: The rotor includes a rotor core, a coil winding and an output shaft. The coil winding is wrapped around the inside of the rotor core. Both ends of the output shaft are horizontally protruded on both sides of the rotor core. The output shaft is movably connected to the first transmission assembly and the second transmission assembly respectively.

3. The brush mounting structure of the electrically driven stirring mechanism according to claim 1, characterized in that: A commutator is provided at one end of the rotor core. The commutator is electrically connected to the coil winding. The commutator can extend into the interior of the second housing, and the commutator and the brush assembly are in contact and electrically conductive.

4. The brush mounting structure of the electrically driven stirring mechanism according to claim 3, characterized in that: The brush assembly includes a brush housing, a contact piece and a conductive spring piece. A plug-in slot is provided at the top of the brush housing. Two ends of the conductive spring piece are plugged and fixed to the plug-in slot. A spring is provided between the conductive spring piece and the top of the contact piece. Two ends of the spring are respectively fixedly connected to the conductive spring piece and the top of the contact piece. The contact piece can be located inside the brush housing and move up and down through the spring. The bottom end of the contact piece can extend to the bottom of the brush housing to contact the commutator for conduction.

5. The brush mounting structure of the electrically driven stirring mechanism according to claim 4, characterized in that: The top and bottom sides of the brush housing are respectively provided with a first limiting protrusion and a second limiting protrusion protruding outward, and the top opening of the protective sleeve is provided with a limiting groove matching the first limiting protrusion. When the brush housing is sleeved inside the protective sleeve, the first limiting protrusion is matched and embedded in the limiting groove, and the second limiting protrusion abuts against the bottom end surface of the protective sleeve.

6. The brush mounting structure of the electrically driven stirring mechanism according to claim 2, characterized in that: The first shell and the second shell are both provided with a rotating connection piece at one end close to the motor driving part, and the two ends of the output shaft are rotatably arranged inside the first shell and the second shell through the rotating connection piece.

7. The brush mounting structure of the electrically driven stirring mechanism according to claim 6, characterized in that: The rotating connecting member arranged in the first shell is composed of a rotating ball head, the surface area of ​​the rotating ball head is an arc-shaped structure, the center of the rotating ball head is a hollow structure, one end of the output shaft is plugged into the center of the rotating ball head, and the rotating ball head is rotatably connected to the first shell.

8. The brush mounting structure of the electrically driven stirring mechanism according to claim 6, characterized in that: The rotating connection member arranged in the second housing is composed of a bearing, one end of the output shaft is plugged into the bearing, and the output shaft is rotatably connected to the second housing through the bearing.

9. A brush mounting structure for an electrically driven stirring mechanism according to any one of claims 1 to 8, characterized in that: The stator is provided with fastening bolts at the four corners of the rotor, and the corresponding connecting parts of the first shell and the second shell are provided with plug-in holes. The two ends of the fastening bolts are respectively plugged into the plug-in holes of the first shell and the second shell, and are threadedly connected through fixing nuts.

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