Motor assembling device

Abstract

The utility model discloses a motor assembling device, which belongs to the technical field of motor production equipment and comprises a positioning unit and a pressing unit arranged above the positioning unit. A positioning column is arranged in the center of the top of the positioning unit, and a slot is formed in the center of the positioning column; the pressing unit comprises a first push rod assembly and a second push rod assembly, and the first push rod assembly is arranged below the second push rod assembly; the positioning column is cylindrical, the inserting groove is a circular groove, and the groove wall of the inserting groove and the peripheral wall of the positioning column are coaxially arranged. According to the motor assembling device provided by the utility model, the rotor assembly and the rotor assembly of the motor are coaxially fixed during assembling, so that the assembling accuracy and safety are ensured, possible collision between the rotor assembly and the stator assembly is avoided, the two pressing rods are reasonably adopted to respectively press the stator assembly and the upper end cover, and the assembling efficiency is improved. The assembling procedure can be completed at a time, and the assembling efficiency of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the field of motor production equipment, and in particular to a motor assembly device. Background Art

[0002] The motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. The stator and rotor are important components of motors such as generators and starters. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to be cut by the magnetic lines of force in the rotating magnetic field and then generate (output) current. Motors are widely used in various fields such as transportation, home appliances, and machine tools.

[0003] When producing motors, motor assembly is the last and most important step. The assembly accuracy of the motor directly affects the working accuracy and efficiency of the equipment using the motor. In the existing motor assembly method, when the stator and the rotor are assembled, the rotor is often directly clamped on the stator. However, due to the strong magnetic attraction between the stator and the rotor, the central axes of the rotor and the stator are often not in the same straight line. There are also cases where the rotor scrapes or collides with the stator due to magnetic force, thereby damaging the magnetic tiles. Accidents that occur during the assembly process often cause injuries to assemblers or damage to motor parts. Especially for larger products, the permanent magnets used as magnetic tiles generate a stronger magnetic field, which causes greater damage to assemblers and motor parts. Utility Model Content

[0004] The utility model aims to provide a more efficient and convenient motor assembly device to solve the problems of insufficient accuracy and safety during the assembly process.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is:

[0006] A motor assembly device includes a positioning unit and a pressing unit, wherein the pressing unit is arranged above the positioning unit; a positioning column is arranged in the center of the top of the positioning unit, and a slot is arranged in the center of the positioning column; the pressing unit includes a first push rod assembly and a second push rod assembly, wherein the first push rod assembly is arranged below the second push rod assembly.

[0007] In the above motor assembly device, the positioning unit further comprises fixed teeth, a plurality of the fixed teeth are arranged around the positioning column, and the plurality of the fixed teeth are at the same distance from the positioning column.

[0008] In the above motor assembly device, the positioning column is cylindrical, the slot is a circular slot, and the slot wall is coaxially arranged with the outer peripheral wall of the positioning column.

[0009] In the above motor assembly device, the diameter of the positioning column is less than or equal to the diameter of the opening of the lower end cover of the motor, and the diameter of the slot is greater than or equal to the diameter of the bottom of the stator shaft of the motor.

[0010] In the above motor assembly device, the positioning column is arranged to slide up and down, and a spring is arranged at the bottom of the positioning column.

[0011] In the above motor assembly device, the pushing directions of the first push rod assembly and the second push rod assembly are toward the center of the positioning unit.

[0012] In the above motor assembly device, a first pressing head is arranged at the bottom of the first push rod assembly, and a second pressing head is arranged at the bottom of the second push rod assembly. The first pressing head and the second pressing head are arranged coaxially.

[0013] In a preferred embodiment of the utility model, an auxiliary bracket is arranged on the top of the second pressing head, and the auxiliary bracket is in a "door" shape and avoids the first push rod assembly.

[0014] In the above motor assembly device, a through hole is provided at the center of the second pressing head, and the diameter of the through hole is greater than or equal to the diameter of the first pressing head.

[0015] In another preferred embodiment of the present invention, a protrusion is provided on the bottom edge of the second pressing head, and the diameter of the protrusion is equal to the diameter of the upper end cover of the motor.

[0016] In another preferred embodiment of the present invention, a receiving groove is further provided on the bottom surface of the second pressing head, and the receiving groove penetrates the through hole and a part of the protruding portion on the bottom surface of the second pressing head.

[0017] In another preferred embodiment of the present invention, a recessed portion is provided at the bottom of the first pressing head.

[0018] Beneficial effect: The motor assembly device of the utility model ensures the accuracy and safety of assembly by coaxially fixing the rotor assembly and the rotor assembly of the motor during assembly, avoiding possible collision between the rotor assembly and the stator assembly. At the same time, two pressure rods are reasonably used to press the stator assembly and the upper end cover separately, so that the assembly procedure can be completed at one time, thereby improving the efficiency of motor assembly.

[0019] In order to make the above features and advantages of the utility model more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the structure of a motor used as an example.

[0021] Figure 2 The figure is a schematic diagram of the structural disassembly of a motor used as an example.

[0022] Figure 3 It is a three-dimensional schematic diagram of the motor assembly device of the utility model.

[0023] Figure 4 It is a three-dimensional schematic diagram of a positioning unit of the motor assembly device of the utility model.

[0024] Figure 5 It is a cross-sectional schematic diagram of the positioning unit after the motor assembly is placed in the utility model.

[0025] Figure 6 It is a front schematic diagram of the pressing unit of the motor assembly device of the utility model.

[0026] Figure 7 It is a three-dimensional schematic diagram of the pressing unit of the motor assembly device of the utility model.

[0027] Figure 8 This is a schematic diagram of the motor assembly device of the utility model in use. DETAILED DESCRIPTION

[0028] In order to make the purpose and technical solution of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of 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. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The directional terms mentioned in the following implementation methods, such as: up, down, left, right, front, back, bottom, top, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used for illustration, not for limitation of the utility model.

[0029] The utility model relates to a motor assembly device. A typical motor is taken as an example below to illustrate the working principle of the motor assembly device of the utility model. Figure 1 is a schematic diagram of the structure of a motor as an example, Figure 2 The following is a schematic diagram of the structural disassembly of a motor as an example. Figure 1 and Figure 2As shown, the motor M includes three main components, namely, a rotor assembly M1, a stator assembly M2, and an upper end cover M3. The stator assembly M2 is installed in the rotor assembly M1 from above, and the upper end cover M3 is arranged above the stator assembly M2 and is fixedly connected to the rotor assembly M1. During operation, the stator assembly M2 is fixed, and the combination of the rotor assembly M1 and the upper end cover M3 rotates. The above motor M is only an example of a motor. For motors with stators on the outside and rotors on the inside, the motor assembly device of the present application is also applicable.

[0030] like Figure 2 As shown, the rotor assembly M1 is in the shape of a cylinder, with the opening facing upward, and a lower end cover opening M11 is provided in the center of the bottom. The rotor assembly M1 serves as the rotor of the motor M, and its bottom also serves as the lower end cover of the motor M. The upper end cover M3 is in the shape of a disc, and its shape corresponds to the shape of the rotor assembly M1, and an upper end cover opening M31 is provided in the center of the upper end cover M3. The stator assembly M2 is in the shape of a disc as a whole, and is inserted into the interior of the rotor assembly M1, and there is a certain gap between the rotor assembly M1 and the stator assembly M2. The stator assembly M2 includes a stator shaft M21, which is arranged at the center of the stator assembly M2, and the upper and lower ends of the stator shaft M21 protrude from the top and bottom surfaces of the disc surface of the stator assembly M2, respectively. When the motor is assembled, the upper and lower ends of the stator shaft M21 are respectively inserted into the lower end cover opening M11 and the upper end cover opening M31. The upper end of the stator shaft M21 is usually connected to a cable for providing power to the motor.

[0031] The motor assembly device of the utility model is suitable for assembling the above-mentioned motor. Figure 3 FIG. 1 is a three-dimensional schematic diagram of the motor assembly device of the utility model. Figure 3 As shown, the motor assembly device of the present invention comprises a positioning unit 100 and a pressing unit 200. The positioning unit 100 is used to place various components of the motor M above, and the pressing unit 200 is arranged above the positioning unit 100 to press and assemble various components of the motor M.

[0032] Figure 4 FIG. 1 is a three-dimensional schematic diagram of a positioning unit of a motor assembly device of the present utility model. Figure 4As shown, the positioning unit 100 includes a positioning column 110 and a fixed tooth 120. The positioning column 110 is arranged at the center of the top of the positioning unit 100 and can slide up and down. In the initial state, the positioning column 110 is in the upper position. Preferably, a spring is arranged at the bottom of the positioning column 110 to press the positioning column 110 upward. A plurality of the fixed teeth 120 are arranged around the positioning column 110, and the distance between the fixed teeth 120 and the positioning column 110 is adjustable. The plurality of the fixed teeth 120 are used to fix the outer wall of the rotor assembly M1 of the motor M. The plurality of the fixed teeth 120 are arranged at the same distance from the positioning column 110. Preferably, the distance between the plurality of the fixed teeth 120 and the positioning column 110 can be adjusted synchronously. The positioning column 110 is cylindrical, and a slot 111 is arranged in the center. The slot 111 is a circular slot, and the slot wall of the slot 111 is arranged coaxially with the outer peripheral wall of the positioning column 110.

[0033] Figure 5 This is a cross-sectional schematic diagram of the positioning unit after the motor assembly is placed in the utility model. Figure 5 As shown, the rotor assembly M1 of the motor M is sleeved on the outer side of the positioning column 110 through the central lower end cover opening M11, and the diameter of the positioning column 110 is equal to or slightly smaller than the diameter of the lower end cover opening M11. The bottom of the stator shaft M21 of the stator assembly M2 is inserted into the slot 111, and the diameter of the slot 111 is greater than or equal to the diameter of the bottom of the stator shaft M21. The upper end cover M3 of the motor M is sleeved on the top of the stator shaft M21 through the upper end cover opening M31. In the initial state, the rotor assembly M1 and the stator assembly M2 of the motor M are coaxially arranged by the positioning column 110, and the placement position of the rotor assembly M1 is lower than the stator assembly M2, which can ensure that before the pressing process is carried out, the positions of the rotor assembly M1 and the stator assembly M2 of the motor M can be kept coaxial, and the two will not be attracted and collided with each other due to magnetic force.

[0034] Figure 6 This is a front view of the pressing unit of the motor assembly device of the utility model. Figure 6 As shown, the pressing unit 200 includes a first push rod assembly 210 and a second push rod assembly 220. The first push rod assembly 210 is arranged below the second push rod assembly 220, and the two are coaxially arranged, and the pushing direction is toward the center of the positioning unit 100. The first push rod assembly 210 is used to press and assemble the stator shaft M21 of the motor M, and the second push rod assembly 220 is used to press and assemble the upper end cover M3 of the motor M. The first push rod assembly 210 and the second push rod assembly 220 can be selected from electric push rods, air pump push rods, etc.

[0035] The bottom of the first push rod assembly 210 is provided with a first pressing head 211, and the first pressing head 211 is used to abut and press down the top of the stator shaft M21 of the motor M during the press-fit assembly. Preferably, the bottom of the first pressing head 211 is provided with a recessed portion, which is used to accommodate the top of the stator shaft M21 of the motor M during the press-fit assembly to prevent the stator shaft M21 from slipping when pressing down. The bottom of the second push rod assembly 220 is provided with a second pressing head 221, and the first pressing head 211 and the second pressing head 221 are coaxially arranged, and the second pressing head 221 is used to abut and press down the edge of the upper end cover M3 of the motor M during the press-fit assembly. In addition, in order to prevent the first push rod assembly 210 from interfering with the movement path of the second pressing head 221 of the coaxially arranged second push rod assembly 220, the second push rod assembly 220 is further provided with an auxiliary bracket 222 on the top of the second pressing head 221. The auxiliary bracket is in the shape of a "door" and avoids the first push rod assembly 210, so that the movement of the second pressing head 221 will not be affected by the first push rod assembly 210. In the initial state, the first pressing head 211 and the second pressing head 221 are both located at the uppermost initial stroke position.

[0036] Figure 7 FIG. 1 is a three-dimensional schematic diagram of a pressing unit of the motor assembly device of the utility model. Figure 6 and Figure 7 As shown, the first pressing head 211 and the second pressing head 221 are coaxially arranged. The second pressing head 221 is disc-shaped, and its diameter corresponds to the upper end cover M3 of the motor M. A through hole 221A is provided at the center of the second pressing head 221, and the through hole 221A is used for the first pressing head 211 to pass through, and the diameter of the through hole 221A is greater than or equal to the diameter of the first pressing head 211. A protrusion 221B is also provided on the bottom edge of the second pressing head 221, and the protrusion 221B is used to press the edge of the upper end cover M3 of the motor M during press-fit assembly, so that the upper end cover M3 of the motor M is press-fitted with the rotor assembly M1, and the diameter of the protrusion 221B is equal to the diameter of the upper end cover M3 of the motor M. Preferably, a receiving groove 221C is also provided on the bottom surface of the second pressing head 221, and the receiving groove 221C passes through the through hole 221A and a part of the protrusion 221B on the bottom surface of the second pressing head 221, and is used to accommodate the cable when the cable is connected to the stator shaft M21 of the motor M, so as to prevent the cable from being squeezed and damaged during pressing and assembly.

[0037] Figure 8 This is a schematic diagram of the motor assembly device of the utility model in use. Figure 8 , to illustrate the working process of the motor assembly device of the utility model. The operating steps of the motor assembly device of the utility model are as follows.

[0038] Step S1 , starting the motor assembly device, fitting the lower end cover opening M11 at the center of the rotor assembly M1 of the motor M onto the outer side of the positioning column 110 , and locking and fixing the outer wall of the rotor assembly M1 of the motor M with a plurality of fixing teeth 120 .

[0039] Step S2 , inserting the bottom of the stator shaft M21 of the stator assembly M2 of the motor M into the slot 111 of the positioning column 110 .

[0040] Step S3, insert the upper end cover M3 of the motor M onto the top of the stator shaft M21 through the upper end cover opening M31. If a cable is connected to the top of the stator shaft M21, align the direction of the cable with the direction of the receiving groove 221C at the bottom of the second pressing head 221.

[0041] Step S4, start the first push rod assembly 210, the first pressing head 211 presses down through the through hole 221A in the center of the second pressing head 221, abuts against the top of the stator shaft M21 of the motor M, and continues to press down until the stator assembly M2 of the motor M is pressed into the rotor assembly M1 of the motor M.

[0042] Step S5, start the second push rod assembly 220, press the second pressing head 221 downward, and the raised portion 221B at the bottom edge of the second pressing head 221 abuts against the edge of the upper end cover M3 of the motor M and continues to press downward until the upper end cover M3 and the rotor assembly M1 are pressed tightly to fix the two together.

[0043] Step S6 , the first pressing head 211 and the second pressing head 221 are lifted up to release the locking of the outer wall of the rotor assembly M1 by the plurality of fixing teeth 120 , and the assembled motor M is taken out.

[0044] Based on the above operation steps, it can be known that when assembling the motor, the stator assembly and the rotor assembly always remain coaxial under the action of the positioning column 110. When the stator assembly is pressed down, the upper and lower ends are respectively fixed in the axial direction by the positioning column 110 and the first pressing head 211, and the rotor assembly is also locked on the positioning unit 100 by a plurality of the fixing teeth 120. The two will not collide due to mutual attraction due to magnetic force when being assembled.

[0045] In summary, the motor assembly device of the utility model ensures the accuracy and safety of assembly by coaxially fixing the rotor assembly and the rotor assembly of the motor during assembly, avoiding possible collision between the rotor assembly and the stator assembly. At the same time, two pressure rods are reasonably used to press the stator assembly and the upper end cover separately, so that the assembly procedure can be completed at one time, thereby improving the efficiency of motor assembly.

[0046] Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims

1. A motor assembly device, characterized in that: It comprises a positioning unit and a pressing unit, wherein the pressing unit is arranged above the positioning unit; A positioning column is arranged at the center of the top of the positioning unit, and a slot is arranged at the center of the positioning column; The pressing unit includes a first push rod assembly and a second push rod assembly, wherein the first push rod assembly is arranged below the second push rod assembly.

2. A motor assembly device as claimed in claim 1, characterized in that: The positioning unit further comprises a fixing tooth, wherein a plurality of the fixing teeth are arranged around the positioning column, and a plurality of the fixing teeth are at the same distance from the positioning column.

3. A motor assembly device as claimed in claim 1, characterized in that: The positioning post is cylindrical, the slot is a circular slot, and the slot wall is coaxially arranged with the outer peripheral wall of the positioning post.

4. A motor assembly device as claimed in claim 3, characterized in that: The diameter of the positioning column is smaller than or equal to the diameter of the opening of the lower end cover of the motor, and the diameter of the slot is larger than or equal to the diameter of the bottom of the stator shaft of the motor.

5. A motor assembly device as claimed in claim 1, characterized in that: The positioning column is arranged to slide up and down, and a spring is arranged at the bottom of the positioning column.

6. A motor assembly device as claimed in claim 1, characterized in that: The pushing directions of the first push rod assembly and the second push rod assembly are toward the center of the positioning unit.

7. A motor assembly device as claimed in claim 6, characterized in that: A first pressing head is disposed at the bottom of the first push rod assembly, and a second pressing head is disposed at the bottom of the second push rod assembly. The first pressing head and the second pressing head are coaxially disposed.

8. A motor assembly device as claimed in claim 7, characterized in that: An auxiliary bracket is arranged on the top of the second pressing head, and the auxiliary bracket is in the shape of a "door" and avoids the first push rod assembly.

9. A motor assembly device as claimed in claim 7, characterized in that: A through hole is provided at the center of the second pressing head, and a diameter of the through hole is greater than or equal to a diameter of the first pressing head.

10. A motor assembly device as claimed in claim 9, characterized in that: A protrusion is provided on the bottom edge of the second pressing head, and the diameter of the protrusion is equal to the diameter of the upper end cover of the motor.

11. A motor assembly device as claimed in claim 10, characterized in that: The bottom surface of the second pressing head is further provided with a receiving groove, and the receiving groove penetrates the through hole and a part of the protruding portion on the bottom surface of the second pressing head.

12. A motor assembly device as claimed in claim 7, characterized in that: A recessed portion is provided at the bottom of the first pressing head.

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