Bolt fixing structure of electrically-driven stirring mechanism

Abstract

The utility model relates to the technical field of electric stirring mechanisms, in particular to a bolt fixing structure of an electric driving stirring mechanism, which comprises a motor driving part, a first stirring transmission part and a second stirring transmission part, the motor driving part comprises a stator and a rotor, and two end surfaces of the stator are fixedly connected with a first shell and a second shell respectively. Fastening bolts are arranged at the positions, located at the four corners of the rotor, of the stator, inserting holes are formed in the corresponding connecting positions of the first shell and the second shell, nut limiting grooves are formed in the four corners of the second shell, fixing nuts are embedded in the nut limiting grooves, and the inserting holes and the nut limiting grooves are of a conductive structure. The end of the fastening bolt is in threaded connection with the fixing nut, the position of the fixing nut can be limited through the nut limiting groove, and even under the working condition that vibration of the stirring transmission parts on the two sides is large, threaded locking between the fixing nut and the fastening bolt can still keep a stable connection structure.

Description

Technical Field

[0001] The utility model relates to the technical field of electric stirring mechanisms, in particular to a bolt fixing 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] However, after the internal structure of the motor is integrated into the outer shell of the stirring transmission parts on both sides, in the actual working process, due to the large working vibration of the stirring transmission parts on both sides, the nuts of the general nut and bolt fastening structure are easily loosened under the vibration transmission of the stirring transmission parts. Therefore, in view of these current situations, it is necessary to develop a bolt fixing structure of the electric-driven stirring mechanism to meet the needs of actual use. Utility Model Content

[0005] The utility model aims to provide a bolt fixing structure of an electric-driven stirring mechanism, which is used to solve the technical problem that the nuts of a general nut-bolt fastening structure are prone to loosening when the working vibration of stirring transmission parts on both sides is large.

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

[0007] A bolt fixing 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, the stator is provided with fastening bolts at the four corners of the rotor, the corresponding connection parts of the first shell and the second shell are provided with plug-in holes, the ends of the fastening bolts are respectively plugged into the plug-in holes of the first shell and the second shell, the four corners of the second shell are provided with nut limiting grooves, the interior of the nut limiting grooves is inlaid with fixing nuts, the plug-in holes and the nut limiting grooves are conductive structures, and the ends of the fastening bolts are threadedly connected to the fixing nuts.

[0008] In the above description, as a further solution, the fixing nut is a hexagonal structure, and the two side walls of the nut limiting groove are abutted and embedded with the two side walls of the fixing nut.

[0009] In the above description, as a further solution, the end of the fastening bolt close to the fixing nut is a threaded portion, the threaded portion extends to the interior of the nut limiting groove and is threadedly connected with the fixing nut, and the end of the fastening bolt away from the fixing nut is a nut portion protruding outward, and the fastening bolt abuts against the outer wall of the first shell through the nut portion.

[0010] 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 and arranged 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.

[0011] In the above description, as a further solution, a commutator is provided at one end of the rotor core, and the commutator is electrically connected to the coil winding. A mounting groove is provided on the side of the second shell close to the motor drive part, and a brush matching the commutator is provided inside the mounting groove. When the stator is fixedly connected to the second shell, the commutator can extend into the interior of the second shell, and the contact end of the brush can contact the surface of the commutator.

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

[0016] The present application discloses a bolt fixing structure for an electric-driven stirring mechanism. On the basis of a structure in which the end covers or outer shells used to fix the stator and the rotor in a traditional motor are reduced and the two end faces of the stator are respectively fixedly connected to the outer shells of the first stirring transmission part and the second stirring transmission part, a nut limiting groove for embedding a fixing nut is provided at the corner of the second shell. After the end of the fastening bolt is threadedly connected to the fixing nut, the position of the fixing nut can be limited by the nut limiting groove. Even under the working condition where the stirring transmission parts on both sides vibrate greatly, the thread locking between the fixing nut and the fastening bolt can still maintain a stable connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a bolt fixing structure of an electric drive stirring mechanism described in the utility model;

[0018] Figure 2 It is a schematic diagram of the structural decomposition of a bolt fixing structure of an electric driven stirring mechanism described in the utility model;

[0019] Figure 3 It is a structural schematic diagram of a bolt fixing structure of an electric drive stirring mechanism described in the utility model at a middle top view angle;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the DD direction;

[0022] Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure of C in the middle;

[0023] Figure 7 for Figure 1 A schematic diagram of the partially enlarged structure of B in the middle;

[0024] 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-installation groove, 312-nut limiting groove, 32-second transmission assembly, 33-bearing, 4-fastening bolt, 41-nut part, 42-threaded part, 5-fixing nut, 6-plug hole, 7-brush. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-7 The invention specifically implements a bolt fixing structure of an electric-driven stirring mechanism, comprising a motor driving part 11, 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 11 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, the two end surfaces of the stator 11 are respectively fixedly connected to the first shell 21 and the second shell 31, and the two ends of the rotor 12 are respectively movably connected to the first transmission assembly 22 and the second transmission assembly 32.

[0027] Specifically, Figure 5-7 As shown, 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 plugging holes 6. The ends of the fastening bolts 4 are respectively plugged into the plugging holes 6 of the first shell 21 and the second shell 31, and the four corners of the second shell 31 are provided with nut limiting grooves 312. The inside of the nut limiting groove 312 is inlaid with a fixing nut 5. The plugging hole 6 and the nut limiting groove 312 are conductive structures. The end of the fastening bolt 4 close to the fixing nut 5 is a threaded portion 42, and the threaded portion 42 extends to the inside of the nut limiting groove 312 and is threadedly connected with the fixing nut 5. The end of the fastening bolt 4 away from the fixing nut 5 is a nut portion 41 protruding outward, and the fastening bolt 4 abuts against the outer wall of the first shell 21 through the nut portion 41. The fixing nut 5 is a hexagonal structure, and the two side walls of the nut limiting groove 312 abut against and are inlaid with the two side walls of the fixing nut 5.

[0028] On the basis of the structure that reduces the end cover or casing for fixing the stator 11 and the rotor 12 in the traditional motor and fixes the two end surfaces of the stator 11 to the casings of the first stirring transmission part 2 and the second stirring transmission part 3 respectively, a nut limiting groove 312 for embedding the fixing nut 5 is opened at the corner of the second shell 31. After the end of the fastening bolt 4 is threadedly connected with the fixing nut 5, the position of the fixing nut 5 can be limited by the nut limiting groove 312. Even under the working condition where the stirring transmission parts on both sides vibrate greatly, the thread locking between the fixing nut 5 and the fastening bolt 4 can still maintain a stable connection structure.

[0029] Specifically, Figure 2 and 4 As shown, the rotor 12 includes a rotor core 121, a coil winding 122 and an output shaft 123. The coil winding 122 surrounds the inside of the rotor core 121. The two ends of the output shaft 123 are respectively horizontally protrudingly arranged 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. A mounting groove 311 is provided on one side of the second shell 31 close to the motor drive unit 11. A brush 7 matching the commutator 13 is provided inside the mounting groove 311. When the stator 11 is fixedly connected to the second shell 31, the commutator 13 can extend to the inside of the second shell 31, and the contact end of the brush 7 can contact the surface of the commutator 13.

[0030] Specifically, Figure 4 As shown, a rotating connection piece is provided at one end of the first shell 21 and the second shell 31 close to the motor drive unit 11, and both ends of the output shaft 123 are rotatably arranged inside the first shell 21 and the second shell 31 through the rotating connection piece, respectively. The rotating connection 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, and 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 connection 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.

[0031] An assembly process of a bolt fixing structure of an electric-driven stirring mechanism: align the two end surfaces of the stator 11 with the first shell 21 and the second shell 31 respectively, insert the fixing nut 5 into the inside of the nut limiting groove 312, so that the two side walls of the nut limiting groove 312 abut against the two side walls of the fixing nut 5, and then pass the fastening bolt 4 through the plug-in hole 6 of the first shell 21, the stator 11 and the plug-in hole 6 of the second shell 31 in sequence, and then rotate the nut part 41 so that the threaded part 42 of the fastening bolt 4 is threadedly locked with the fixing nut 5.

[0032] 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 bolt fixing structure of an electric drive stirring mechanism, comprising a motor driving part, a first stirring transmission part and a second stirring transmission part, wherein the first stirring transmission part comprises a first shell and a first transmission assembly, and 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, and the two ends of the rotor are respectively movably connected to the first transmission assembly and the second transmission assembly, 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, and the ends of the fastening bolts are respectively plugged into the plug-in holes of the first shell and the second shell, and nut limiting grooves are provided at the four corners of the second shell, and fixing nuts are embedded in the nut limiting grooves. There is a conductive structure between the plug-in holes and the nut limiting grooves, and the ends of the fastening bolts are threadedly connected with the fixing nuts.

2. The bolt fixing structure of the electrically driven stirring mechanism according to claim 1, characterized in that: The fixing nut is a hexagonal structure, and the two side walls of the nut limiting groove are abutted and embedded with the two side walls of the fixing nut.

3. The bolt fixing structure of the electrically driven stirring mechanism according to claim 1, characterized in that: The end of the fastening bolt close to the fixing nut is a threaded portion, which extends to the inside of the nut limiting groove and is threadedly connected with the fixing nut. The end of the fastening bolt away from the fixing nut is a nut portion protruding outward, and the fastening bolt abuts against the outer wall of the first shell through the nut portion.

4. A bolt fixing structure for an electrically driven stirring mechanism according to any one of claims 1 to 3, 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.

5. The bolt fixing structure of the electrically driven stirring mechanism according to claim 4, characterized in that: A commutator is provided at one end of the rotor core, and the commutator is electrically connected to the coil winding. A mounting groove is provided on the side of the second shell close to the motor drive part, and a brush matching the commutator is provided inside the mounting groove. When the stator is fixedly connected to the second shell, the commutator can extend into the interior of the second shell, and the contact end of the brush can contact the surface of the commutator.

6. The bolt fixing structure of the electrically driven stirring mechanism according to claim 4, 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 bolt fixing 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 bolt fixing 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.

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