Low-noise series excited motor

Abstract

The utility model discloses a low-noise series excited motor which comprises a front end cover, an output shaft damping assembly and an output shaft. The output shaft damping assembly is provided with an inner layer structure, a middle layer structure, an outer layer structure and a damping base, and the inner layer structure, the middle layer structure and the outer layer structure are located on the same side of the damping base and fixedly connected with the damping base. The low-noise series excited motor disclosed by the utility model has the beneficial effects that the interference acting force of the output shaft is sequentially transmitted to the inner layer structure, the outer layer structure and the inner layer structure from inside to outside, and the interference acting force is gradually dissipated until the interference acting force disappears or the coaxiality meets the standard again.

Description

Technical Field

[0001] The utility model belongs to the field of series-excited motors, and in particular relates to a low-noise series-excited motor. Background Art

[0002] The publication number is CN218216949U, the subject name is a utility model patent for a low-noise series-excited motor for a washing machine, and its IPC classification number is H02K5 / 24. Its technical solution discloses "a mounting base 1 arranged in the washing machine, fixed rods 5 are fixedly installed on both sides of the top of the mounting base 1, and a mounting cavity 2 is opened inside and two buffer grooves are opened on the top, buffer rods 10 are movably installed in the two buffer grooves, the tops of the two buffer rods 10 are fixedly installed with the same buffer plate 9, and the top of the buffer plate 9 is fixedly installed with a series-excited motor body 6, two plastic blocks are fixedly installed on the inner wall of one side of the mounting cavity 2, both plastic blocks are opened with movable holes, and cross bars 20 are movably installed in the two movable holes, and the ends of the two cross bars 20 that are close to each other are fixedly installed with linkage racks 12 and the ends that are away from each other are fixedly installed with extrusion blocks 16."

[0003] Thus, the above utility model patent has disclosed one technical solution for a low-noise series-excited motor. However, the technical solution disclosed in the above utility model patent focuses on vibration damping of the series-excited motor body and does not further address issues such as output shaft vibration damping, which requires further improvement. Utility Model Content

[0004] The utility model aims at the state of the prior art, overcomes the above defects and provides a low-noise series-excited motor.

[0005] The utility model adopts the following technical solution, a low-noise series motor, including a front end cover, an output shaft shock-absorbing assembly and an output shaft, wherein:

[0006] The output shaft shock-absorbing assembly comprises an inner layer structure, a middle layer structure, an outer layer structure and a shock-absorbing base, wherein the inner layer structure, the middle layer structure and the outer layer structure are located on the same side of the shock-absorbing base and are respectively fixedly connected to the shock-absorbing base;

[0007] The inner structure and the damping base have a central hole, the central hole is coaxially arranged with the output shaft, one end of the output shaft is internally connected to the central hole and further extends out of the output shaft damping assembly, and the other end of the output shaft is transmission-connected to the series motor body;

[0008] The front end cover is provided with a front end cover protrusion, and the shock-absorbing base is fixedly connected to the front end cover protrusion.

[0009] As a preferred technical solution of the above technical solutions, the inner layer structure, the middle layer structure and the outer layer structure are respectively built with damping fillers.

[0010] As a preferred technical solution of the above technical solution, the inner layer structure is provided with an annular portion and a branch portion, the annular portion and the branch portion alternate in sequence, one end of the branch portion is integrally formed with the two adjacent annular portions, and the other end of the branch portion is fixedly connected to the middle layer structure.

[0011] As a preferred technical solution of the above technical solutions, the low-noise series-excited motor also includes a motor housing, a front end cover is fixedly connected to the motor housing, the front end cover is also provided with a front end cover body, the front end cover protrusion is integrally formed with the front end cover body, the front end cover body is provided with a front end cover extension, the motor housing is provided with a motor housing extension and a connecting rod, one end of the connecting rod is fixedly connected to the front end cover extension, and the other end of the connecting rod is fixedly connected to the motor housing extension.

[0012] As a preferred technical solution of the above technical solutions, the low-noise series-excited motor further includes a rear end cover, which is fixedly connected to the motor housing.

[0013] The low-noise series-excited motor disclosed by the present utility model has the beneficial effect that the interference force of the output shaft is transmitted from the inside to the outside in sequence to the inner structure, the outer structure and the outer structure, and the interference force is gradually dissipated until the interference force disappears or the coaxiality meets the standard again. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of this application.

[0015] Figure 2 It is a side view of the present application.

[0016] Figure 3 It is a top view of this application.

[0017] Figure 4 It is a stereogram from one viewing angle of this application.

[0018] Figure 5 It is a stereoscopic diagram from another perspective of this application.

[0019] Figure 6 It is a three-dimensional diagram of the output shaft shock absorbing assembly of the present application from one perspective.

[0020] Figure 7 It is a stereoscopic view of the output shaft shock absorbing assembly of the present application from another perspective.

[0021] The reference numerals include: 100-front end cover; 110-front end cover protrusion; 120-front end cover body; 130-front end cover extension; 200-rear end cover; 300-motor housing; 310-motor housing extension; 320-connecting rod; 400-output shaft shock absorber assembly; 401-center hole; 410-inner layer structure; 411-annular portion; 412-branch portion; 413-inner layer space; 420-middle layer structure; 421-middle layer space; 430-outer layer structure; 440-shock absorber base; 500-output shaft. DETAILED DESCRIPTION

[0022] The utility model discloses a low-noise series motor. Figures 1 to 7 , the specific implementation methods of the utility model are further described.

[0023] See attached figure Figures 1 to 7 , Figures 1 to 5 The low-noise series motor from different perspectives is shown. Figure 6 and Figure 7 The output shaft shock absorber assembly is shown from different perspectives.

[0024] Example 1.

[0025] Preferably, the low-noise series motor includes a front cover 100, an output shaft damping assembly 400 and an output shaft 500, wherein:

[0026] The output shaft shock-absorbing assembly 400 includes an inner layer structure 410, a middle layer structure 420, an outer layer structure 430, and a shock-absorbing base 440. The inner layer structure 410, the middle layer structure 420, and the outer layer structure 430 are located on the same side of the shock-absorbing base 440 and are respectively fixedly connected to (one side of) the shock-absorbing base 440.

[0027] The inner structure 410 and the damping base 440 have a central hole 401, which is coaxially arranged with the output shaft 500. One end of the output shaft 500 is inscribed in the central hole 401 and further extends out of the output shaft damping assembly 400. The other end of the output shaft 500 is drivingly connected to the series motor body (not shown in the figure);

[0028] The front end cover 100 is provided with a front end cover protrusion 110, and the shock absorbing base 440 (the other side) is fixedly connected to the front end cover protrusion 110;

[0029] When the coaxiality between the output shaft 500 and the center hole 401 of the output shaft shock absorber assembly 400 meets the standard (that is, the output shaft 500 will not interfere with the inner surface of the center hole 401 during rotation or the degree of slight interference meets the standard), the noise of the output shaft 500 is small or no noise is generated; when the coaxiality between the output shaft 500 and the center hole 401 of the output shaft shock absorber assembly 400 does not meet the standard, the output shaft 500 and the center hole 401 generate an interference force, and the interference force of the output shaft 500 is transmitted from the inside to the outside to the inner layer structure 410, the outer layer structure 420 and the outer layer structure 430 in sequence, and the interference force is gradually dissipated until the interference force disappears or the coaxiality meets the standard again.

[0030] The inner layer structure 410, the middle layer structure 420, and the outer layer structure 430 are respectively embedded with damping fillers. As a supplementary explanation, the damping fillers can be made of polymer resin.

[0031] Among them, the inner layer structure 410 is provided with (four) annular parts 411 and (four) branch parts 412, the annular parts 411 and the branch parts 412 alternate in sequence, one end of the branch part 412 is integrally formed with the two adjacent annular parts 411, and the other end of the branch part 412 is fixedly connected to the middle layer structure 420; so that the four annular parts 411 enclose a central hole 401 for the internal connection of the output shaft 500.

[0032] The annular portion 411 is axially symmetrical with respect to the center of the central hole 401 , and the branch portion 412 is axially symmetrical with respect to the center of the central hole 401 , so as to disperse the force.

[0033] There are (four) inner spaces 413 between the inner layer structure 410 and the middle layer structure 420 , and two adjacent inner spaces 413 are not connected to each other so as to better disperse the force.

[0034] There is a middle space 421 between the outer layer structure 430 and the middle layer structure 420 , so that there is a distance between the outer layer structure 430 and the middle layer structure 420 .

[0035] The middle layer structure 420 and the outer layer structure 430 are preferably implemented as ring structures.

[0036] Among them, the low-noise series-excited motor also includes a motor housing 300, the front end cover 410 is fixedly connected to the motor housing 300, the series-excited motor body is placed in the motor housing 300, the front end cover 100 is also provided with a front end cover body 120, the front end cover protrusion 110 and the front end cover body 120 are integrally formed, the front end cover body 120 is provided with (four) front end cover extensions 130, the motor housing 300 is provided with (four) motor housing extensions 310 and (four) connecting rods 320, one end of the connecting rod 320 is fixedly connected to the front end cover extension 130, and the other end of the connecting rod 320 is fixedly connected to the motor housing extension 310; so that the connecting rod 320 can tighten the front end cover 100 and the motor housing 300, thereby improving the overall structural strength.

[0037] The low-noise series motor further includes a rear end cover 200 , which is fixedly connected to the motor housing 300 .

[0038] It is worth mentioning that the technical features such as the specific components of the damping filler involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement method of these technical features can be selected by conventional means in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated.

[0039] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A low-noise series motor, characterized in that: It includes a front end cover, an output shaft shock absorber assembly and an output shaft, wherein: The output shaft shock-absorbing assembly comprises an inner layer structure, a middle layer structure, an outer layer structure and a shock-absorbing base, wherein the inner layer structure, the middle layer structure and the outer layer structure are located on the same side of the shock-absorbing base and are respectively fixedly connected to the shock-absorbing base; The inner structure and the damping base have a central hole, the central hole is coaxially arranged with the output shaft, one end of the output shaft is internally connected to the central hole and further extends out of the output shaft damping assembly, and the other end of the output shaft is transmission-connected to the series motor body; The front end cover is provided with a front end cover protrusion, and the shock-absorbing base is fixedly connected to the front end cover protrusion.

2. The low-noise series motor according to claim 1, characterized in that: The inner layer structure, the middle layer structure and the outer layer structure are respectively equipped with built-in damping fillers.

3. The low-noise series motor according to claim 1, characterized in that: The inner layer structure is provided with an annular portion and a branch portion, the annular portion and the branch portion are alternated in sequence, one end of the branch portion is integrally formed with two adjacent annular portions, and the other end of the branch portion is fixedly connected to the middle layer structure.

4. The low-noise series motor according to claim 1, characterized in that: The low-noise series-excited motor also includes a motor housing, a front end cover fixedly connected to the motor housing, the front end cover is also provided with a front end cover body, the front end cover protrusion is integrally formed with the front end cover body, the front end cover body is provided with a front end cover extension, the motor housing is provided with a motor housing extension and a connecting rod, one end of the connecting rod is fixedly connected to the front end cover extension, and the other end of the connecting rod is fixedly connected to the motor housing extension.

5. The low-noise series motor according to claim 4, characterized in that: The low-noise series motor further comprises a rear end cover which is fixedly connected to the motor housing.

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