Motor magnet ring coaxial matching device

Abstract

The utility model relates to the technical field of motors, in particular to a motor magnetic ring coaxial matching device which comprises a shell, a rotating shaft, a magnetic ring and an assembling jig, the shell is provided with a connecting ring, one end of the rotating shaft is arranged on the connecting ring, and the magnetic ring is arranged on the shell and located on the periphery of the connecting ring. The assembling jig comprises a coaxial hole, an assembling step and a receding step, the coaxial hole is used for being matched with the rotating shaft, the receding step is used for receding the connecting ring, and the assembling step is used for installing the magnetic ring and installing the magnetic ring on the shell. The problems that an existing motor magnetic ring is high in assembly difficulty and coaxial assembly is difficult to achieve are solved, the rotating shaft is assembled under coaxial cooperation, and the assembly coaxiality is high.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a coaxial matching device for motor magnetic rings. Background Art

[0002] A brushless motor is a type of motor, also known as a brushless DC motor or an electronically controlled speed motor. Compared to conventional brushed DC motors, brushless motors do not require brushes and collector rings for commutation, so they have higher efficiency, longer life, and lower maintenance requirements. The working principle of a brushless motor is to use an electronic controller to achieve timely switching of current to drive the motor rotor to rotate. It usually consists of a stator and a rotor. The stator contains several coils that generate a rotating magnetic field by switching current. The rotor is equipped with permanent magnets or magnets, which rotate due to the rotating magnetic field.

[0003] The motor magnetic ring refers to the component used to generate a magnetic field in the motor. The magnetic ring generates a magnetic field by using permanent magnetic materials or electromagnetic coils. When installing the motor magnetic ring, it is necessary to ensure the concentricity of the installation position and the shaft. The existing installation method is difficult to ensure the concentricity of the magnetic ring, which affects the motor accuracy. Therefore, it is necessary to improve the existing motor magnetic ring installation method. Summary of the invention

[0004] To solve the above problems, the present invention provides a coaxial matching device for motor magnetic rings which solves the problem that existing motor magnetic rings are difficult to assemble and difficult to achieve coaxial assembly, and assembles them under the coaxial matching of the rotating shaft to achieve high coaxiality.

[0005] The technical solution adopted by the present invention is: a coaxial matching device of a motor magnetic ring, comprising a shell, a rotating shaft, a magnetic ring and an assembly fixture, the shell is provided with a connecting ring, one end of the rotating shaft is arranged on the connecting ring, the magnetic ring is arranged on the shell and is located at the outer periphery of the connecting ring, the assembly fixture comprises a coaxial hole, an assembly step and a clearance step, the coaxial hole is used to match the rotating shaft, the clearance step is used to avoid the air of the connecting ring, the assembly step is used for the installation of the magnetic ring, and is used to install the magnetic ring on the shell.

[0006] A further improvement to the above solution is that a yoke portion is provided on the outer periphery of the shell, and the yoke portion is annular to form a placement cavity on the shell.

[0007] A further improvement to the above solution is that one end of the connecting ring protrudes toward the accommodating cavity.

[0008] A further improvement to the above solution is that a connecting portion is provided at one end of the rotating shaft, and connecting teeth are provided on the outer periphery of the connecting portion, and the connecting teeth are interference fit with the inner diameter of the connecting ring.

[0009] A further improvement to the above solution is that a retaining ring is provided at one end of the connecting portion, and the retaining ring is used for limiting the assembly of the rotating shaft.

[0010] A further improvement to the above solution is that the magnetic ring is coaxially arranged with the rotating shaft.

[0011] A further improvement to the above solution is that an adhesive is provided between the magnetic ring and the shell, and the magnetic ring is bonded to the shell through the adhesive.

[0012] A further improvement to the above solution is that a coaxial guiding inclined surface is provided at one end of the coaxial hole, and the coaxial guiding inclined surface is used to guide toward the coaxial hole when mating with the rotating shaft.

[0013] A further improvement to the above solution is that chamfers are provided at the corners of the assembly step.

[0014] The beneficial effects of the present invention are:

[0015] Compared with the existing motor magnetic ring installation, the present invention puts the magnetic ring into the assembly step of the assembly jig, and then performs coaxial assembly through the cooperation of the rotating shaft and the coaxial hole. The assembly process is directly through the coaxial cooperation of the assembly jig and the rotating shaft, so that the connecting ring and the magnetic ring are coaxially installed. The problem of high difficulty in assembling the existing motor magnetic ring and difficulty in coaxial assembly is solved. The assembly is performed under the coaxial cooperation of the rotating shaft, and the assembly coaxiality is high and the precision is high.

[0016] The invention realizes the coaxial matching of the rotating shaft and the housing through the design of the connecting ring and the rotating shaft on the housing. The coaxial hole provides accurate alignment with the rotating shaft in the fixture, ensures the stable rotation of the rotating shaft, and improves the running stability and reliability of the motor.

[0017] The assembly step is used in the fixture to install the magnetic ring. Through the design of the assembly step, the magnetic ring can be accurately installed on the housing to ensure a tight connection between the magnetic ring and the housing. This helps to improve the magnetic force transmission efficiency of the motor and the stability of the overall structure. The setting of the clearance step is used to avoid the connection ring. This design ensures that there is a gap between the connection ring and the magnetic ring to prevent friction and interference between the two. At the same time, the clearance step can also provide a suitable gap so that the magnetic ring can rotate freely and reduce the noise and wear caused by the contact between the magnetic ring and other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the coaxial matching device of the motor magnetic ring of the present invention;

[0019] Figure 2 for Figure 1 An exploded schematic diagram of the coaxial matching device of the motor magnetic ring;

[0020] Figure 3 for Figure 1 A top view schematic diagram of the coaxial matching device of the motor magnetic ring;

[0021] Figure 4 for Figure 3 Sectional view of AA in the middle;

[0022] Figure 5 for Figure 4 A is an enlarged schematic diagram.

[0023] Explanation of the reference numerals: housing 1, connecting ring 11, yoke portion 12, rotating shaft 2, connecting portion 21, connecting teeth 22, retaining ring 23, magnetic ring 3, assembly fixture 4, coaxial hole 41, coaxial guide slope 411, assembly step 42, air avoidance step 43. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] like Figure 1 to Figure 5As shown, in one embodiment of the present invention, a motor magnetic ring coaxial matching device is involved, including a housing 1, a rotating shaft 2, a magnetic ring 3 and an assembly jig 4, wherein the housing 1 is provided with a connecting ring 11, one end of the rotating shaft 2 is arranged on the connecting ring 11, the magnetic ring 3 is arranged on the housing 1 and is located on the outer periphery of the connecting ring 11, and the assembly jig 4 includes a coaxial hole 41, an assembly step 42 and a clearance step 43, wherein the coaxial hole 41 is used to match the rotating shaft 2, the clearance step is used to avoid the connection ring 11, the assembly step 42 is used to install the magnetic ring 3, and is used to install the magnetic ring 3 on the housing 1. In this embodiment, the magnetic ring 3 is placed in the assembly step 42 of the assembly jig 4, and then the coaxial assembly is performed under the cooperation of the rotating shaft 2 and the coaxial hole 41, and the assembly process is directly through the coaxial cooperation of the assembly jig 4 and the rotating shaft 2, so that the connecting ring 11 and the magnetic ring 3 are coaxially installed. The problem that the existing motor magnetic ring 3 is difficult to assemble and difficult to achieve coaxial assembly is solved, and the assembly is performed under the coaxial cooperation of the rotating shaft 2, with high coaxiality and high precision.

[0028] In the above embodiment, the design of the connecting ring 11 on the housing 1 and the rotating shaft 2 realizes the coaxial fit between the rotating shaft 2 and the housing 1. The coaxial hole 41 provides accurate alignment with the rotating shaft 2 in the fixture, ensures the stable rotation of the rotating shaft 2, and improves the running stability and reliability of the motor.

[0029] In the above embodiment, the assembly step 42 is used in the fixture to install the magnetic ring 3. Through the design of the assembly step 42, the magnetic ring 3 can be accurately installed on the housing 1 to ensure a tight connection between the magnetic ring 3 and the housing 1. This helps to improve the magnetic force transmission efficiency of the motor and the stability of the overall structure.

[0030] In the above embodiment, the clearance step 43 is provided to avoid clearance of the connecting ring 11. This design can ensure that there is a gap between the connecting ring 11 and the magnetic ring 3 to prevent friction and interference between the two. At the same time, the clearance step 43 can also provide a suitable interval so that the magnetic ring 3 can rotate freely and reduce the noise and wear caused by the contact between the magnetic ring 3 and other components.

[0031] A yoke portion 12 is provided on the outer periphery of the housing 1, and the yoke portion 12 is annular to form a placement cavity on the housing 1. Specifically, one end of the connecting ring 11 protrudes toward the placement cavity. In this embodiment, a placement cavity is formed by the annular design of the yoke portion 12. This placement cavity provides a space for accommodating the magnetic ring 3, which is convenient for the installation and fixation of the magnetic ring 3. At the same time, the annular design of the yoke portion 12 can also increase the structural strength of the housing 1 and improve the overall stability. One end of the connecting ring 11 protrudes toward the placement cavity. Such a design can provide a guiding and positioning function. The connecting ring 11 is arranged at the axis center of the housing 1, and the rotating shaft 2 is coaxially arranged with the connecting ring 11 to ensure the accuracy and stability of the structure when used on the motor, especially when the outer rotor motor is used and the housing 1 is used as a rotor housing as an output structure.

[0032] A connecting portion 21 is provided at one end of the rotating shaft 2, and connecting teeth 22 are provided on the outer periphery of the connecting portion 21, and the connecting teeth 22 are interference fit with the inner diameter of the connecting ring 11. In this embodiment, a tight connection between the rotating shaft 2 and the connecting ring 11 is achieved by the interference fit between the connecting teeth 22 and the inner diameter of the connecting ring 11. The interference fit can provide a larger contact area and a stronger connection force, thereby ensuring the stability and reliability between the rotating shaft 2 and the connecting ring 11. The arrangement of the connecting teeth 22 on the outer periphery of the connecting portion 21 increases the connection strength. The connecting teeth 22 provide more contact points, so that the connecting portion 21 can withstand greater force and torque, thereby enhancing the connection ability between the rotating shaft 2 and the connecting ring 11.

[0033] A retaining ring 23 is provided at one end of the connecting portion 21, and the retaining ring 23 is used to limit the assembly position of the rotating shaft 2. The retaining ring 23 is provided at one end of the connecting portion 21 to limit the assembly position of the rotating shaft 2. The retaining ring 23 can ensure the correct position of the rotating shaft 2 during the assembly process and prevent over-insertion or incomplete insertion.

[0034] The magnetic ring 3 is coaxially arranged with the rotating shaft 2. In this embodiment, the coaxial cooperation between the magnetic ring 3 and the rotating shaft 2 reduces the vibration and noise caused by eccentricity or misalignment. The coaxial arrangement can reduce friction and imbalance, and improve the running stability and quietness of the motor.

[0035] An adhesive is provided between the magnetic ring 3 and the housing 1, and the magnetic ring 3 is bonded to the housing 1 through the adhesive. In this embodiment, by bonding the magnetic ring 3 and the housing 1 together using an adhesive, a stable connection can be achieved. The adhesive fills the gap between the magnetic ring 3 and the housing 1, forming a strong connection to ensure that they are tightly bonded. The adhesive provides additional structural support and strengthens the connection between the magnetic ring 3 and the housing 1. This helps to improve the structural strength and stability of the motor and reduce the occurrence of looseness and vibration.

[0036] A coaxial guiding bevel 411 is provided at one end of the coaxial hole 41, and the coaxial guiding bevel 411 is used to guide toward the coaxial hole 41 when the rotating shaft 2 is matched; specifically, a chamfer is provided at the corner of the assembly step 42. In this embodiment, the coaxial guiding bevel 411 of the coaxial hole 41 is used to guide the rotating shaft 2 to the correct position. When the rotating shaft 2 is inserted into the coaxial hole 41, the coaxial guiding bevel 411 guides the rotating shaft 2 to the correct position to ensure that it is aligned with the axis of the coaxial hole 41. This helps to maintain accurate alignment between motor components and improve the running stability and accuracy of the motor.

[0037] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A coaxial matching device for motor magnetic rings, characterized in that: The utility model comprises a shell, a rotating shaft, a magnetic ring and an assembly jig, wherein the shell is provided with a connecting ring, one end of the rotating shaft is arranged on the connecting ring, the magnetic ring is arranged on the shell and is located at the outer periphery of the connecting ring, and the assembly jig comprises a coaxial hole, an assembly step and a clearance step, the coaxial hole is used to match the rotating shaft, the clearance step is used to avoid the air of the connecting ring, the assembly step is used to install the magnetic ring, and is used to install the magnetic ring on the shell.

2. The motor magnetic ring coaxial matching device according to claim 1, characterized in that: A yoke portion is arranged on the outer periphery of the shell, and the yoke portion is annular to form a placement cavity on the shell.

3. The motor magnetic ring coaxial matching device according to claim 2, characterized in that: One end of the connecting ring protrudes toward the placement cavity; the connecting ring is arranged at the axis center of the shell, and the rotating shaft is coaxially arranged with the connecting ring.

4. The motor magnetic ring coaxial matching device according to claim 1, characterized in that: A connecting portion is provided at one end of the rotating shaft, and connecting teeth are provided on the outer periphery of the connecting portion. The connecting teeth are interference fit with the inner diameter of the connecting ring.

5. The motor magnetic ring coaxial matching device according to claim 4, characterized in that: A retaining ring is provided at one end of the connecting portion, and the retaining ring is used for limiting the assembly of the rotating shaft.

6. The motor magnetic ring coaxial matching device according to claim 1, characterized in that: The magnetic ring is coaxially arranged with the rotating shaft.

7. The motor magnetic ring coaxial matching device according to claim 1, characterized in that: An adhesive is arranged between the magnetic ring and the shell.

8. The motor magnetic ring coaxial matching device according to claim 7, characterized in that: The magnetic ring is bonded to the housing by an adhesive.

9. The motor magnetic ring coaxial matching device according to claim 1, characterized in that: A coaxial guiding inclined surface is arranged at one end of the coaxial hole, and the coaxial guiding inclined surface is used for guiding toward the coaxial hole when mating with the rotating shaft.

10. The motor magnetic ring coaxial matching device according to claim 9, characterized in that: The corners of the assembly step are provided with chamfers.

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