A vibration damper and a device with a damper

Abstract

The present invention discloses a vibration damper and a device with a damper, comprising a stator, a rotor, a first acting part and a second acting part. The rotor is installed inside the stator and can move relative to the stator. The first acting part is fixedly installed on the rotor, and the second acting part is fixedly installed on the stator. One of the first acting part or the second acting part is made of a magnetic material, and the other is made of a magnetic conductive material. When the stator moves under an external force, the magnetic force between the first acting part and the second acting part restrains the movement of the stator. The present invention is installed inside the non-acting part of the product. When the non-acting part has a tendency to vibrate under the influence of the acting part, the magnetic force between the first acting part and the second acting part will play a role in damping the vibration of the non-acting part, thereby improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration damping, and particularly to a vibration damper and a device with a damper. Background Art

[0002] At present, reciprocating motors / devices have been widely used in beauty care products such as electric toothbrushes / cleansing devices, as well as personal care products. Such motors / devices can be divided into two types: circular reciprocating motion and axial reciprocating motion. While the product brings experiences such as cleaning / massage through axial and / or circumferential reciprocating motions, due to the existence of reaction forces, the non-operating part of the product will also have corresponding vibrations, which are not the vibrations required by the product and will lead to a reduction in the user experience. Summary of the Invention

[0003] In view of this, the present invention provides a vibration damper and a device with a damper.

[0004] The technical solution is as follows: A vibration damper, characterized in that: it includes a stator, a rotor, a first acting part and a second acting part, wherein the rotor is installed inside the stator and can move relative to the stator, the first acting part is fixedly installed on the rotor, and the second acting part is fixedly installed on the stator;

[0005] One of the first acting part or the second acting part is made of a magnetic material, and the other is made of a magnetic conductive material. When the stator moves under an external force, the magnetic force between the first acting part and the second acting part restricts the movement of the stator.

[0006] Adopting the above technical solution, the entire structure is installed inside the non-operating part of the product. When the non-operating part has a tendency to vibrate under the influence of the operating part, the magnetic force between the first acting part and the second acting part will play a role in damping the vibration of the non-operating part, thereby improving the user experience.

[0007] Furthermore,

[0008] The above-mentioned rotor includes a rotating shaft;

[0009] The above-mentioned stator includes a cylindrical shell, the two ends of the shell are closed by end covers, and bushings are installed inside the end covers. The two ends of the rotating shaft are inserted into the corresponding bushings.

[0010] The other of the above-mentioned first acting part or the second acting part is also made of a magnetic material, and the north and south poles of the two act on each other.

[0011] Adopting the above technical solution, the entire structure is similar to a motor in appearance, simple, beautiful, and has a compact structure without occupying space.

[0012] The above magnetic material is a permanent magnet material. With this structure, the usage effect is better.

[0013] The above permanent magnet material is sintered neodymium iron boron. With this structure, the usage effect is better.

[0014] The above rotating shaft can vibrate axially relative to the housing. The first acting part has an annular first reset groove along its circumferential direction, the second acting part has an annular second reset groove along its circumferential direction, and the notch of the first reset groove faces the notch of the second reset groove. With this structure, the first acting part and the second acting part will always remain in a predetermined initial position in the static state.

[0015] The above rotating shaft can rotate circumferentially relative to the housing. The first acting part has a first reset groove along its axial direction, the second acting part has a second reset groove along its axial direction, and the notch of the first reset groove faces the notch of the second reset groove. With this structure, the first acting part and the second acting part will always remain in a predetermined initial position in the static state.

[0016] A device with a damper includes a handheld part and a functional part installed on the handheld part. The functional part is driven to reciprocate by a reciprocating motor. The key lies in that: the above-mentioned vibration damper is installed in the handheld part. With the above technical solution, it is beneficial to damp the unnecessary vibration of the handheld part and improve the user experience.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure is installed in the non-acting part of the product. When the non-acting part has a tendency to vibrate under the influence of the acting part, the first acting part and the second acting part will, under the restraint of magnetic force, damp the vibration of the non-acting part, thereby improving the user experience. Description of the Drawings

[0018] Figure 1 It is an exploded view of Embodiment 1;

[0019] Figure 2 It is a schematic diagram of the assembled structure of Embodiment 1;

[0020] Figure 3 It is a schematic diagram of the structure of Embodiment 2;

[0021] Figure 4 It is a schematic diagram of the structure of Embodiment 3;

[0022] Figure 5 It is a schematic diagram of the structure of Embodiment 4;

[0023] Figure 6 It is an exploded view of Embodiment 5;

[0024] Figure 7 Schematic diagram of the assembly structure of Example 5;

[0025] Figure 8 Schematic diagram of the structure of Example 6;

[0026] Figure 9 Schematic diagram of the structure of Example 7;

[0027] Figure 10 Schematic diagram of the structure of Example 8;

[0028] Figure 11 Schematic diagram of the structure of Example 9;

[0029] Figure 12 Schematic diagram of the structure of Example 10. Detailed implementation manners

[0030] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0031] Example 1, as shown in Figure 1 and 2 , a vibration damper includes a stator, a rotor, a first acting portion 4 and a second acting portion 3, wherein the rotor is installed in the stator and can move relative to the stator. In this embodiment, the rotor includes a rotating shaft 2, and the stator includes a cylindrical housing 1, and both ends of the housing 1 are closed by end caps 5. An annular bushing 6 is installed in the end caps 5, and both ends of the rotating shaft 2 are inserted into the corresponding bushings 6, and the rotating shaft 2 can reciprocate axially relative to the housing 1;

[0032] The first acting portion 4 is fixedly installed on the rotor, and the second acting portion 3 is fixedly installed on the stator. In this embodiment, the second acting portion 3 is made of a magnetic material and includes a cylindrical south pole and north pole, and the south pole and north pole are fixedly installed on the inner wall of the housing 1 along the axial direction. The magnetic material is a permanent magnetic material, and the permanent magnetic material is preferably sintered neodymium iron boron;

[0033] The first acting portion 4 is in the shape of a disc and is made of a magnetic conductive material. The second acting portion 3 surrounds the outside of the first acting portion 4. When the housing 1 undergoes axial vibration due to an external force, the magnetic force between the south pole and north pole of the first acting portion 4 and the second acting portion 3 restrains the axial vibration of the housing 1.

[0034] Preferably, an annular first reset groove 7 is formed along the circumferential direction of the first acting portion 4, and an annular second reset groove 8 is formed between the south pole and north pole of the second acting portion 3, and the notch of the first reset groove 7 faces the notch of the second reset groove 8.

[0035] The bushing 6 is made of a soft plastic material, and the soft plastic material is graphite nylon or Teflon.

[0036] Example 2, as Figure 3 shown, a vibration damper. The difference between this embodiment and Embodiment 1 is that the first acting part 4 is made of a magnetic material, the south pole and the north pole of the first acting part 4 are distributed along the axial direction of the rotating shaft 2, and the second acting part 3 is made of a magnetic conductive material.

[0037] Example 3, as Figure 4 shown, a vibration damper. The difference between this embodiment and Embodiment 1 is that both the first acting part 4 and the second acting part 3 are made of magnetic materials, and their north and south poles are both distributed along the axial direction of the rotating shaft 2. The south pole of the first acting part 4 faces the north pole of the second acting part 3, and the north pole of the first acting part 4 faces the south pole of the second acting part 3.

[0038] Example 4, as Figure 5 shown, a vibration damper. The difference between this embodiment and Embodiment 1 is that the first acting part 4 is made of a magnetic material, the second acting part 3 is made of a magnetic conductive material, the surface of the first acting part 4 is the south pole or the north pole, and the inside thereof is the other pole.

[0039] Example 5, as Figure 6 and 7 shown, a vibration damper includes a stator, a rotor, a first acting part 4 and a second acting part 3. The rotor is installed in the stator and can move relative to the stator. In this embodiment, the rotor includes a rotating shaft 2, the stator includes a cylindrical housing 1, both ends of the housing 1 are closed by end caps 5, an annular bushing 6 is installed inside the end caps 5, both ends of the rotating shaft 2 are inserted into the corresponding bushings 6, and the rotating shaft 2 can rotate reciprocally in the circumferential direction relative to the housing 1;

[0040] The first acting part 4 is fixedly installed on the rotor, and it is made of a magnetic conductive material, including a connecting part fixedly connected to the rotating shaft 2 and N tooth parts extending radially. N is a natural number, and in this embodiment, N = 2;

[0041] The second acting part 3 is fixedly installed on the stator, and it is made of a magnetic material. The magnetic material is preferably a permanent magnetic material, and further preferably a sintered neodymium iron boron. The second acting part 3 includes N pairs of long strip-shaped south poles and north poles. The N pairs of south poles and north poles are arranged in one-to-one correspondence with the N tooth parts, and at least a part of the tooth parts faces the corresponding south poles and north poles;

[0042] When the housing 1 rotates circumferentially due to an external force, the magnetic force between the south poles and north poles of the first acting part 4 and the second acting part 3 restricts the circumferential rotation of the housing 1.

[0043] Preferably, a first reset groove 7 is axially formed along the tooth part of the first acting part 4, a second reset groove 8 is formed between the south pole and the north pole of the second acting part 3, and the notch of the first reset groove 7 faces the notch of the second reset groove 8.

[0044] Example 6, as Figure 8 shown, a vibration damper. The difference between this embodiment and Embodiment 5 is that the first acting part 4 is made of a magnetic material, the second acting part 3 is made of a magnetic conductive material, and one of the two tooth parts of the first acting part 4 is the south pole and the other is the north pole.

[0045] Example 7, as Figure 9 shown, a vibration damper. The difference between this embodiment and Embodiment 5 is that both the first acting part 4 and the second acting part 3 are made of magnetic materials, and one of the two tooth parts of the first acting part 4 is the south pole and the other is the north pole.

[0046] Example 8, as Figure 10 shown, a vibration damper. The difference between this embodiment and Embodiment 5 is that the first acting part 4 is made of a magnetic material, the second acting part 3 is made of a magnetic conductive material, the first acting part 4 has one tooth part, the tooth top part of this tooth part is the north pole or the south pole, and its tooth root part is the other pole.

[0047] Example 9, a device with a damper, as Figure 11 shown, includes a handheld part 1A and a functional part 1B installed on the handheld part 1A. The functional part 1B is driven by a reciprocating motor to perform reciprocating circumferential or axial movements. When the functional part 1B is driven by the reciprocating motor to perform reciprocating circumferential movement, a micro magnetic vibration damper according to any one of Embodiments 5 - 6 is installed in the handheld part 1A;

[0048] When the functional part 1B is driven by the reciprocating motor to perform reciprocating axial movement, a micro magnetic vibration damper according to any one of Embodiments 1 - 4 is installed in the handheld part 1A.

[0049] Example 10, a device with a damper, as Figure 12 shown, includes a handheld part 1A and a functional part 1B installed on the handheld part 1A. The functional part 1B is driven by a reciprocating motor to perform reciprocating circumferential and axial movements. A micro magnetic vibration damper according to any one of Embodiments 5 - 6 and a micro magnetic vibration damper according to any one of Embodiments 1 - 4 are installed in the handheld part 1A.

[0050] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. A vibration damper, characterized in that: for a device with a damper, the device with a damper includes a handheld part (1A) and a functional part (1B) installed on the handheld part (1A), wherein the functional part (1B) is driven to reciprocate by a reciprocating motor, and a vibration damper is installed in the handheld part (1A); the vibration damper includes a stator, a rotor, a first acting part (4) and a second acting part (3), wherein the rotor is installed in the stator and can move relative to the stator, the first acting part (4) is fixedly installed on the rotor, and the second acting part (3) is fixedly installed on the stator; one of the first acting part (4) or the second acting part (3) is made of a magnetic material, the other of the first acting part (4) or the second acting part (3) is also made of a magnetic material, and the north and south poles of the two interact with each other. When the stator moves under an external force, the magnetic force between the first acting part (4) and the second acting part (3) restricts the movement of the stator, and the magnetic material is a permanent magnetic material; the rotor includes a rotating shaft (2); the stator includes a cylindrical housing (1), both ends of the housing (1) are closed by end covers (5), a bushing (6) is installed in the end covers (5), and both ends of the rotating shaft (2) are inserted into the corresponding bushings (6); the rotating shaft (2) can vibrate axially relative to the housing (1), the first acting part (4) has an annular first reset groove (7) along its circumference, the second acting part (3) has an annular second reset groove (8) along its circumference, and the notch of the first reset groove (7) faces the notch of the second reset groove (8); or, the rotating shaft (2) can rotate circumferentially relative to the housing (1), the first acting part (4) has a first reset groove (7) along its axis, the second acting part (3) has a second reset groove (8) along its axis, and the notch of the first reset groove (7) faces the notch of the second reset groove (8).

2. A vibration damper according to claim 1, characterized in that: the permanent magnetic material is sintered neodymium iron boron.

3. A device with a damper, including a handheld part (1A) and a functional part (1B) installed on the handheld part (1A), wherein the functional part (1B) is driven to reciprocate by a reciprocating motor, characterized in that: the vibration damper according to claim 1 or 2 is installed in the handheld part (1A).

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