Motor with noise reduction structure

Abstract

The utility model relates to a motor with noise reduction structure, including casing, rotor and elastic part, the casing includes a cavity and with the axle hole of intercommunication of cavity, the rotor includes a body and the axle hole is passed in the body, the both ends of axle are extended and pass out the both ends surface of body, the rotor is contained in the cavity, the axle passes through axle hole, the inner surface between body and cavity is close to the clearance of axle hole side, elastic part is set in the clearance and is set on the axle, and the elastic part is set on the axle of rotor through setting an elastic part on the clearance between the shaft block of rotor and casing, and the shaft block of rotor and casing can not produce direct impact through elastic part, thereby eliminating the impact sound produced by the collision, and further eliminating the noise, the elastic part is provided with a plurality of movable elastic feet, the clearance between the inner surface of casing and rotor can be changed, the inner surface of casing can not collide with the shaft block, and the structure is simple, convenient to manufacture, cost controllable and excellent.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor with a noise reduction structure. Background Technology

[0002] Massage products typically involve pressing, kneading, and rotating motions. To perform these actions, a motor drives an eccentric wheel to power the massage heads. When the motor's rotor rotates, causing the eccentric wheel to spin, the rotor moves up and down. This causes the surface of the rotor closest to the casing to collide with the casing's surface, producing an impact sound and thus noise. Prolonged exposure to this noise can be unacceptable to users and negatively impacts the customer experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is that when the rotor moves up and down, the surface of the rotor near the housing collides with the surface of the housing, producing an impact sound and thus generating noise.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a motor with a noise reduction structure, comprising: A housing, the housing including a cavity and a shaft hole communicating with the cavity; A rotor, comprising a body and a shaft passing through the body, the two ends of the shaft extending out of the end surfaces of the body, the rotor being housed within a cavity, the shaft passing through a shaft hole, and a gap between the body and the inner surface of the cavity near the shaft hole; and An elastic element is fitted onto the machine shaft and disposed in the gap.

[0005] Furthermore, a shaft stop is fitted on one end of the machine shaft near the shaft hole, and the gap is formed between the shaft stop and the inner surface of the cavity near the shaft hole.

[0006] Furthermore, the elastic element includes a ring plate and at least three elastic feet connected to the ring plate, the elastic feet being movably disposed.

[0007] Furthermore, each of the elastic feet is angled relative to the surface of the ring piece.

[0008] Furthermore, a connecting piece is provided between each of the elastic feet and the ring piece, the connecting piece being flush with the ring piece and angled to the elastic foot.

[0009] Furthermore, a through hole is formed in the middle of the ring plate, and the through hole is fitted onto the machine shaft.

[0010] Furthermore, it also includes a base; the housing has an opening at one end away from the shaft hole, the base covers the opening, and the other end of the shaft passes through the base.

[0011] Furthermore, it also includes at least one brush holder, one end of which is inserted through the base and the other end is disposed near the end of the machine shaft away from the shaft hole.

[0012] Furthermore, the brush holder includes two brush holders, one end of each brush holder is inserted into the base and is positioned far apart from each other, and the other end of each brush holder is close to the machine shaft and surrounds the opposite side walls of the machine shaft.

[0013] Furthermore, it also includes an eccentric wheel, which is sleeved on one end of the machine shaft that extends through the surface of the body.

[0014] The beneficial effects of this utility model are as follows: By setting an elastic element in the gap between the rotor shaft and the housing, and sleeved on the rotor shaft, the elastic element prevents direct collision between the rotor shaft and the housing, thereby eliminating the impact sound and noise. The elastic element is equipped with multiple movable elastic feet, which can change the gap between the inner surface of the housing and the rotor, preventing the inner surface of the housing from colliding with the shaft, thus reducing or eliminating impact sound and noise. This utility model has a simple structure, is easy to manufacture, has controllable cost, and produces excellent results. Attached Figure Description

[0015] Figure 1 An isometric view of an embodiment of this utility model.

[0016] Figure 2 An exploded view of one embodiment of this utility model.

[0017] Figure 3 An isometric view of an elastic element according to an embodiment of this utility model.

[0018] Figure 4 A cross-sectional view of an embodiment of this utility model.

[0019] Figure 5 This is a partial enlarged view of part A in one embodiment of the present invention.

[0020] Label Explanation: 1. Housing; 11. Cavity; 12. Shaft hole; 13. Clearance; 14. Opening; 2. Rotor; 21. Body; 22. Shaft; 23. Shaft stop; 3. Elastic element; 31. Ring plate; 32. Elastic foot; 33. Connecting piece; 34. Through hole; 4. Base; 5. Brush holder; 6. Eccentric wheel. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figures 1 to 5 A motor with a noise reduction structure includes a housing 1 and a base 4 covering the bottom of the housing 1. After the housing 1 and the base 4 are closed, an accommodating space is formed inside. A rotor 2 and at least one brush holder 5 are arranged in the accommodating space. The rotor 2 passes through the housing 1 and the base 4 at both ends, and one end of the brush holder 5 passes through the base 4.

[0023] Specifically, refer to Figure 2 and Figure 4 As shown, the housing 1 includes a cavity 11, one end of which has an opening, and the other end of which has a shaft hole 12. The base 4 has a through-hole and covers the opening, so that the cavity 11 forms the accommodating space. The rotor 2 is disposed in the cavity 11, and its two ends pass through the shaft hole 12 and the through-hole, respectively.

[0024] Specifically, refer to Figure 2 As shown, the rotor 2 includes a body 21 and a shaft 22 passing through the body 21. Both ends of the shaft 22 extend out of the end surfaces of the body 21. When the rotor 2 is housed within the cavity 11, both ends of the shaft 22 pass through the shaft hole 12 and the through-hole, respectively. More specifically, a gap 13 exists between the body 21 and the inner surface of the cavity 11 near the shaft hole 12. Furthermore, a shaft stop 23 is fitted onto the end of the shaft 22 near the shaft hole 12. This gap 13 is formed between the shaft stop 23 and the inner surface of the cavity 11 near the shaft hole 12.

[0025] Specifically, one end of the brush holder 5 passes through the base 4, and the other end of the brush holder 5 is located near the end of the shaft 22 away from the shaft hole 12. In this embodiment, there are two brush holders 5, which are arranged far apart from each other, and one end of each brush holder 5 passes through the base 4; the other ends of the two brush holders 5 are close to the shaft 22 and surround the opposite side walls of the shaft 22. It can be understood that the other ends of the two brush holders 5 are arranged opposite each other around the axis of the shaft 22.

[0026] Specifically, one end of the rotor 2, which penetrates the surface of the housing 1, is connected to an eccentric wheel 6. The eccentric wheel 6 is connected to an external component, which is driven by the motor. Typically, the motor is used in massage products, and the eccentric wheel 6 is connected to the massage product, rotating as the rotor 2 operates.

[0027] However, when the rotor 2 drives the eccentric wheel 6 to rotate, the body 21 moves up and down, and the surface of the cavity 11 near the shaft hole 12 will collide with the shaft stop 23. That is, the body 21 moves between the shaft stop 23 and the gap 13 between the inner surface of the cavity 11, which causes the surface of the cavity 11 near the shaft hole 12 to make an impact sound with the shaft stop 23, thus generating noise.

[0028] To eliminate noise, an elastic element 3 is fitted onto the machine shaft 22 and the elastic element 3 is disposed on the gap 13, so that the surface of the cavity 11 near the shaft hole 12 is prevented from colliding with the shaft stop 23 due to the resistance of the elastic element 3, thereby eliminating noise.

[0029] For details, please refer to Figure 3 As shown, the elastic element 3 includes a ring plate 31, at least three connecting pieces 33 ringed on the ring plate 31, and elastic feet 32 ​​connected to each of the connecting pieces 33. The ring plate 31 abuts against the shaft stop 23, and the elastic feet 32 ​​abut against the inner surface of the cavity 11 near the shaft hole 12.

[0030] More specifically, a through hole 34 is formed in the middle of the ring plate 31, and the through hole 34 is sleeved on the machine shaft 22. The elastic foot 32 is movably disposed. When the body 21 moves up and down, the gap 13 changes. Through the elastic movement of the elastic member 3, the surface of the cavity 11 near the shaft hole 12 is prevented from colliding with the shaft stop 23, thereby reducing noise.

[0031] Furthermore, each of the elastic feet 32 ​​is angled to the surface of the ring plate 31. This can be understood as each elastic foot 32 being connected to the ring plate 31 via a connecting piece 33, which is flush with the ring plate 31, thus forming an angle with the elastic foot 32. Moreover, the elastic foot 32 is movable, so the angle between the connecting piece 33 and the elastic foot 32 can be changed. Specifically, when the body 21 moves up and down, the inner surface of the cavity 11 near the shaft hole 12 presses against the elastic foot 32, and the shaft stop 23 presses against the ring plate 31, causing the gap 13 to change. The angle between the elastic foot 32 and the connecting piece 33 can only be changed. The elastic element 3 buffers the shaft stop 23 against the inner surface of the cavity 11 near the shaft hole 12, preventing collisions and reducing noise.

[0032] Furthermore, in this embodiment, the connecting piece 33 and the elastic foot 32 can both be configured as three, four, five, etc., as long as the elastic element 3 can elastically move to prevent the surface of the cavity 11 near the shaft hole 12 from colliding with the shaft stop 23. Of course, it is also acceptable to use a spring as the elastic element 3, and the spring can prevent the surface of the cavity 11 near the shaft hole 12 from colliding with the shaft stop 23. Any elastic element 3 that can prevent the surface of the cavity 11 near the shaft hole 12 from colliding with the shaft stop 23 is within the protection scope of this utility model.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A motor with a noise reduction structure, characterized in that, include: The housing (1) includes a cavity (11) and a shaft hole (12) communicating with the cavity (11). A rotor (2) comprising a body (21) and a shaft (22) passing through the body (21), the two ends of the shaft (22) extending out of the two end surfaces of the body (21), the rotor (2) being housed within the cavity (11), the shaft (22) passing through the shaft hole (12), and a gap (13) between the body (21) and the inner surface of the cavity (11) near the shaft hole (12); and The elastic element (3) is sleeved on the machine shaft (22) and disposed in the gap (13).

2. The motor with a noise reduction structure according to claim 1, characterized in that: A shaft stop (23) is fitted on one end of the shaft (22) near the shaft hole (12), and the gap (13) is formed between the shaft stop (23) and the inner surface of the cavity (11) near the shaft hole (12).

3. The motor with a noise reduction structure according to claim 2, characterized in that: The elastic element (3) includes a ring plate (31) and at least three elastic feet (32) connected to the ring plate (31), the elastic feet (32) being movable.

4. The motor with a noise reduction structure according to claim 3, characterized in that: Each of the elastic feet (32) is angled to the surface of the ring piece (31).

5. The motor with a noise reduction structure according to claim 3, characterized in that: A connecting piece (33) is provided between each of the elastic feet (32) and the ring piece (31). The connecting piece (33) is flush with the ring piece (31) and is set at an angle to the elastic foot (32).

6. The motor with a noise reduction structure according to any one of claims 3 to 5, characterized in that: A through hole (34) is provided in the middle of the ring plate (31), and the through hole (34) is sleeved on the machine shaft (22).

7. The motor with a noise reduction structure according to claim 6, characterized in that: It also includes a base (4); the housing (1) has an opening (14) at one end away from the shaft hole (12), the base (4) covers the opening (14), and the other end of the shaft (22) passes through the base (4).

8. The motor with a noise reduction structure according to claim 7, characterized in that: It also includes at least one brush holder (5), one end of which is inserted through the base (4) and the other end is close to the shaft (22) away from the shaft hole (12).

9. The motor with a noise reduction structure according to claim 8, characterized in that: The brush holder (5) includes two brush holders. One end of each brush holder (5) is inserted through the base (4) and is set away from each other. The other end of each brush holder (5) is close to the shaft (22) and is set around the opposite side walls of the shaft (22).

10. The motor with a noise reduction structure according to any one of claims 1 to 5, characterized in that: It also includes an eccentric wheel (6), which is sleeved on one end of the shaft (22) that extends through the surface of the body (21).

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