Rotor assembly

Abstract

A rotor assembly comprises a rotor and a gear installed on the rotor, and further comprises an elastic piece, and the elastic piece is arranged between the rotor and the gear so that the rotor and the gear can elastically move relative to each other. The elastic piece comprises a supporting ring body and a plurality of supporting legs annularly arranged on the peripheral side of the supporting ring body, the supporting ring body abuts against the gear, and the supporting legs abut against the rotor; a supporting face is arranged on the supporting ring body, a supporting matching face is arranged at the bottom of the gear, the supporting face abuts against the supporting matching face, and the supporting face and the supporting matching face are attached to each other. According to the rotor assembly, the elastic sheet is arranged, the rotor and the gear are arranged in a split manner, and the elastic sheet is arranged between the rotor and the gear, so that the rotor and the gear can elastically move relative to each other, and a gap between the rotor assembly and a motor shell can be eliminated after the rotor assembly is mounted on the motor shell; therefore, the phenomenon that the rotor assembly moves up and down along the central shaft when rotating is avoided, noise is basically avoided, and the requirement of a user for silence is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a rotor assembly. BACKGROUND

[0002] The existing motor rotor structure is generally provided with a gear on the rotor, and a gap is left between the rotor and the motor shell, when the rotor rotates, the rotor will move up and down along the central shaft of the motor due to the centrifugal force and the existence of the gap, and then collide with the motor shell, resulting in noise, which cannot meet the user's requirement for silence.

[0003] Therefore, it is necessary to make further improvement. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a rotor assembly with simple structure, low noise, good user experience, low cost and high practicability, which overcomes the defects of the prior art.

[0005] A rotor assembly designed for the purpose, characterized in that it comprises a rotor and a gear mounted on the rotor, and further comprises a spring sheet arranged between the rotor and the gear to allow the rotor and the gear to be elastically movable relative to each other.

[0006] The spring sheet comprises a support ring body and a plurality of support legs arranged annularly on the side of the support ring body, the support ring body abuts against the gear, and each support leg abuts against the rotor.

[0007] A support surface is arranged on the support ring body, and a support matching surface is arranged on the bottom of the gear, the support surface abuts against the support matching surface, and the support surface and the support matching surface are mutually attached.

[0008] The support leg comprises a support sheet arranged at one end of the support leg, and a bearing surface is arranged on the rotor, and the support sheet abuts against the bearing surface.

[0009] The support sheet is arranged obliquely to form an angle between the support sheet and the bearing surface.

[0010] A recess is arranged on the rotor, the bearing surface is arranged at the bottom of the recess, and a limiting surface for limiting the support sheet is arranged on the side of the recess.

[0011] The support leg further comprises a connecting strip, one end of the connecting strip is integrally connected with the support ring body, and the other end of the connecting strip is integrally connected with the support sheet.

[0012] A plurality of insertion blocks are arranged annularly on the bottom of the gear, a plurality of insertion holes are arranged annularly on the rotor, and the insertion blocks are inserted into the insertion holes.

[0013] Further comprising a rotating shaft, a first rotating hole is arranged on the rotor, a second rotating hole is arranged on the support ring body, and a third rotating hole is arranged on the gear, and the rotating shaft passes through the first rotating hole, the second rotating hole and the third rotating hole in sequence.

[0014] The support ring body is arranged between the insert blocks.

[0015] The rotor assembly is provided with the elastic sheet, and the rotor and the gear are arranged in two parts, the elastic sheet is arranged between the rotor and the gear, the rotor and the gear can be elastically moved relative to each other, the gap between the rotor assembly and the motor shell can be eliminated after the rotor assembly is installed in the motor shell, and therefore the rotor assembly cannot move up and down along the central axis when rotating, so that the generation of noise is basically eliminated, and the requirement of the user for silence is met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the rotor assembly in an embodiment of the utility model.

[0017] Figure 2 It is a sectional view of the rotor assembly in an embodiment of the utility model.

[0018] Figure 3 It is an exploded structure schematic view of the rotor assembly in an embodiment of the utility model.

[0019] Figure 4 It is a whole structure schematic view of the elastic sheet in an embodiment of the utility model.

[0020] Figure 5 It is a whole structure schematic view of the gear in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and embodiments.

[0022] Referring to Figures 1-5 The rotor assembly comprises a rotor 1, a gear 2 installed on the rotor 1, and an elastic sheet 3 arranged between the rotor 1 and the gear 2, so that the rotor 1 and the gear 2 can be elastically moved relative to each other; the rotor 1 is supported by a lower shell of a motor shell, and the gear 2 is supported by an upper cover of the motor shell.

[0023] The elastic sheet 3 comprises a support ring body 4 and a plurality of support feet 5 arranged in a ring shape on the periphery of the support ring body 4; the support ring body 4 abuts against the gear 2, each support foot 5 abuts against the rotor 1, and the support feet 5 are arranged in three, so that the stress on the rotor 1 is more uniform, and the structural stability of the rotor assembly is improved.

[0024] The top side of the support ring body 4 is provided with a support surface 6, the bottom of the gear 2 is provided with a support matching surface 7, the support surface 6 abuts against the support matching surface 7 upward, and the support surface 6 and the support matching surface 7 are mutually attached.

[0025] The support leg 5 comprises a support piece 8 arranged at the lower end of the support leg 5, and the rotor 1 is provided with a bearing surface 9 at the top thereof, and the support piece 8 is arranged to abut against the bearing surface 9.

[0026] The support piece 8 is arranged to be inclined, so that an angle is formed between the support piece 8 and the bearing surface 9.

[0027] The rotor 1 is provided with a recess 10, the bearing surface 9 is arranged at the bottom of the recess 10, and a limiting surface 11 for limiting the support piece 8 is arranged at the periphery of the recess 10, so that the limiting surface 11 can prevent the support leg 5 from moving outward excessively when the spring piece 3 is compressed under force.

[0028] The support leg 5 further comprises a connecting strip 12, the upper end of the connecting strip 12 is integrally connected with the support ring body 4, the lower end of the connecting strip 12 is integrally connected with the support piece 8, and the connecting strip 12 is arranged to be inclined.

[0029] The gear 2 is provided with a plurality of insertion blocks 17 arranged in a ring shape at the bottom thereof, the rotor 1 is provided with a plurality of insertion holes 13 arranged in a ring shape thereon, and the insertion blocks 17 are inserted into the insertion holes 13, so that the rotor 1 and the gear 2 can rotate synchronously.

[0030] Further comprising a rotating shaft 14, the rotor 1 is provided with a first rotating hole 18, the support ring body 4 is provided with a second rotating hole 15, and the gear 2 is provided with a third rotating hole 16, and the rotating shaft 14 passes through the first rotating hole 18, the second rotating hole 15 and the third rotating hole 16 in sequence, so that the rotor assembly can rotate around the rotating shaft 14; and the rotating shaft 14 is the central shaft of the motor.

[0031] The insertion blocks 17 are arranged in a ring shape at the periphery of the support matching surface 7, and the support ring body 4 is arranged at the position between the insertion blocks 17.

[0032] The rotor 1 comprises an outer ring body 19 and an intermediate body 20 arranged inside the outer ring body 19, the recess 10, the insertion hole 13 and the first rotating hole 18 are arranged on the intermediate body 20, and the intermediate body 20 and the gear 2 are made of plastic.

[0033] The gear 2 comprises a main body 21, the upper portion of the main body 21 is provided with a toothed portion 22, the insertion blocks 17 are arranged at the bottom of the main body 21, and the bottom surface of the main body 21 is the support matching surface 7.

[0034] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification only illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotor assembly characterized by: The utility model provides a rotor (1) and gear (2) are installed on the rotor (1), still include elastic sheet (3), elastic sheet (3) are set between rotor (1) and gear (2), to make rotor (1) and gear (2) can be relative elastic activity.

2. The rotor assembly of claim 1, wherein: Elastic sheet (3) include support ring body (4) and annularly set up a plurality of support feet (5) in the week side of support ring body (4), support ring body (4) rest on gear (2), and each support foot (5) rests on rotor (1) respectively.

3. The rotor assembly of claim 2, wherein: Support ring body (4) is provided with support surface (6), and the bottom of gear (2) is provided with support cooperation surface (7), and support surface (6) rests on support cooperation surface (7), and support surface (6) and support cooperation surface (7) mutually adhere.

4. The rotor assembly of claim 3, wherein: Support foot (5) include the support sheet (8) of setting in support foot (5) one end, and rotor (1) is provided with support surface (9), and support sheet (8) rests on support surface (9).

5. The rotor assembly of claim 4, wherein: Support sheet (8) is arranged obliquely, to make support sheet (8) and support surface (9) form angle.

6. The rotor assembly of claim 4, wherein: Rotor (1) is provided with recess (10), and support surface (9) is set in the bottom of recess (10), and the circumferential side of recess (10) is provided with the limiting surface (11) for the limiting of support sheet (8).

7. The rotor assembly of claim 4, wherein: Support foot (5) still include connecting strip (12), and one end of connecting strip (12) is integrally connected with support ring body (4), and the other end of connecting strip (12) is integrally connected with support sheet (8).

8. The rotor assembly of claim 7, wherein: Gear (2) bottom annularly is provided with a plurality of insertion blocks (17), and rotor (1) is annularly provided with a plurality of insertion holes (13), and insertion block (17) is inserted into insertion hole (13).

9. The rotor assembly of claim 8, wherein: Still include rotating shaft (14), and rotor (1) is provided with first rotating hole (18), and support ring body (4) is provided with second rotating hole (15), and gear (2) is provided with third rotating hole (16), and rotating shaft (14) passes through first rotating hole (18), second rotating hole (15) and third rotating hole (16) in proper order.

10. The rotor assembly of claim 8, wherein: Insertion block (17) annularly sets up in the periphery of support cooperation surface (7), and support ring body (4) sets up in the position between each insertion block (17).

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