Limited corner vibration motor

Abstract

The utility model relates to the technical field of vibration motors, in particular to a limited rotation angle vibration motor, which comprises a casing, a stator assembly and a rotor assembly, the stator assembly and the rotor assembly are arranged in the casing, and the rotor assembly is arranged in the stator assembly. The rotor assembly comprises an output shaft and a rotating shaft, the rotating shaft is connected with a magnetic shoe seat, the magnetic shoe seat is connected with an elastic sheet seat through an elastic sheet, and the magnetic shoe seat is provided with a first magnetic shoe, a second magnetic shoe, a first magnetic conductive sheet and a second magnetic conductive sheet. The first magnetic shoe, the second magnetic shoe, the first magnetic conductive sheet and the second magnetic conductive sheet are oppositely arranged in pairs around the magnetic shoe seat; the stator assembly comprises a stator iron core, two windings of the stator iron core are respectively wound with a coil, the upper end part and the lower end part of each coil are respectively provided with an upper coil frame and a lower coil frame, and the end part of each coil is provided with a coil lead which is led to the outside of the casing. The motor rotor has the advantages of improving the anti-load capacity of the motor, reducing the cost of the motor, improving the strength of the motor rotor body and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration motors, in particular to a vibration motor with a limited rotation angle. Background Art

[0002] The limited-angle vibration motors currently on the market are expensive and have weak load resistance. For example, under a large load, the motor's load resistance is weak, which is specifically manifested in a significant decrease in the motor's rotation angle. The existing limited-angle vibration motor uses two ball bearings and four rare earth magnets, which makes the motor cost relatively high. In addition, the motor rotor body of the existing limited-angle vibration motor is a plastic body, and the output shaft as the torque output is connected to the rotor body by injection molding. The motor rotor body is not strong enough, resulting in a decrease in torque output capacity.

[0003] Therefore, it is necessary for the present application to design a vibration motor with limited rotation angle to solve the above technical problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a vibration motor with limited rotation angle, which has the advantages of improving the load resistance of the motor, reducing the cost of the motor, and improving the strength of the motor rotor body.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vibration motor with limited rotation angle comprises a housing, a stator assembly and a rotor assembly arranged in the housing, wherein the rotor assembly is arranged in the stator assembly;

[0007] The rotor assembly comprises an output shaft and a rotating shaft, wherein the rotating shaft is connected to a magnetic tile seat, wherein the rotating shaft is connected to a spring sheet through the magnetic tile seat, wherein the magnetic tile seat is connected to a spring sheet seat through the spring sheet, wherein a first magnetic tile, a second magnetic tile, a first magnetic conductive sheet and a second magnetic conductive sheet are respectively arranged on the magnetic tile seat, wherein the first magnetic tile, the second magnetic tile, the first magnetic conductive sheet and the second magnetic conductive sheet are arranged opposite to each other in pairs around the magnetic tile seat;

[0008] The stator assembly comprises a stator core, two windings of the stator core are respectively wound with coils, upper and lower ends of the coils are respectively provided with an upper bobbin and a lower bobbin, and the end of each coil has a coil lead wire leading to the outside of the casing.

[0009] Preferably, a ball bearing is sleeved on the output shaft, and the output shaft is connected to the housing via the ball bearing.

[0010] By adopting the above technical solution: a ball bearing and two magnetic tiles are used here, the cost of the motor is effectively reduced, and the effect of two traditional ball bearings and four magnetic tiles can be achieved.

[0011] Preferably, a rubber cover is provided on the top of the housing, and the rubber cover is connected to the upper wire rack.

[0012] Preferably, the rotor assembly is connected and fixed to the rubber cover via a spring seat.

[0013] Preferably, the spring sheet is made of elastic material.

[0014] By adopting the above technical solution: the rotor assembly here is connected and fixed to the rubber cover through the spring plate seat; at the same time, the spring plate made of elastic material here not only provides mechanical torque in addition to the electromagnetic torque generated by the motor itself, but also improves the load resistance of the motor.

[0015] Preferably, a mounting hole connected to the rotating shaft is provided on the magnetic tile seat, and the rotating shaft and the magnetic tile seat are an integral injection-molded structure.

[0016] Preferably, the rotating shaft and the output shaft are an integrated structure, or the rotating shaft and the output shaft are two parts that are riveted together to form an integrated structure.

[0017] By adopting the above technical solution: the rotating shaft is combined with injection molding, and the rotating shaft and the output shaft are integrated or the rotating shaft and the output shaft are two parts that are riveted together to be integrated, thereby improving the strength of the motor rotor body.

[0018] Preferably, clamping plates are provided on both sides of the bottom of the rubber cover, the two clamping plates are arranged opposite to each other, and the rubber cover is connected to the upper wire frame through the clamping plates.

[0019] By adopting the above technical solution: the connection between the rubber cover, the upper wire rack and the stator assembly is reliable and stable through the clamping plate, and the installation and disassembly are convenient.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model adopts a ball bearing and two magnetic tiles, which effectively reduces the cost of the motor and can achieve the effect of two traditional ball bearings and four magnetic tiles.

[0022] 2. The interior of the motor of the utility model is made of elastic material, which not only provides mechanical torque in addition to the electromagnetic torque produced by the motor itself, but also improves the load resistance of the motor.

[0023] 3. The utility model combines the rotating shaft with injection molding, and the rotating shaft and the output shaft are integrated or the rotating shaft and the output shaft are two parts that are riveted together to form an integrated structure, thereby improving the strength of the motor rotor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the connection between the output shaft and the rotating shaft in the utility model;

[0027] Figure 4 It is a schematic diagram of the connection between the magnetic tile seat, the spring piece and the spring piece seat in the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the middle rubber cover of the utility model;

[0029] Figure 6 It is a schematic diagram of the magnetic circuit of the utility model.

[0030] In the figure: 1 housing, 2 output shaft, 3 rotating shaft, 4 magnetic tile seat, 4-1 mounting hole, 5 spring piece, 6 spring piece seat, 7 first magnetic tile, 8 second magnetic tile, 9 first magnetic conductive sheet, 10 second magnetic conductive sheet, 11 stator core, 12 coil, 13 upper bobbin, 14 lower bobbin, 15 coil lead, 16 ball bearing, 17 rubber cover, 17-1 card board. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] Reference Figure 1-Figure 6 , a vibration motor with limited rotation angle, comprising a housing 1, a stator assembly and a rotor assembly arranged in the housing 1, wherein the rotor assembly is arranged in the stator assembly;

[0033] Reference Figure 2 The rotor assembly includes an output shaft 2 and a rotating shaft 3, the rotating shaft 3 is connected to a magnetic tile seat 4, the rotating shaft 3 is connected to a spring 5 through the magnetic tile seat 4, the magnetic tile seat 4 is connected to a spring seat 6 through the spring 5, and the magnetic tile seat 4 is respectively provided with a first magnetic tile 7, a second magnetic tile 8, a first magnetic conductive sheet 9 and a second magnetic conductive sheet 10, and the first magnetic tile 7, the second magnetic tile 8, the first magnetic conductive sheet 9 and the second magnetic conductive sheet 10 are arranged opposite to each other in pairs around the magnetic tile seat 4;

[0034] Reference Figure 2 The stator assembly includes a stator core 11, and two windings of the stator core 11 are each wound with a coil 12. The upper and lower ends of the coil 12 are respectively provided with an upper wire rack 13 and a lower wire rack 14. The end of each coil 12 has a coil lead 15 leading to the outside of the casing 1.

[0035] Specifically, refer to Figure 1The output shaft 2 is sleeved with a ball bearing 16, and the output shaft 2 is connected to the housing 1 through the ball bearing 16. At the same time, the rotor assembly is connected and fixed to the rubber cover 17 through the spring seat 6.

[0036] In this embodiment, refer to Figure 6 Here, a ball bearing 16 and two magnetic tiles, namely the first magnetic tile 7 and the second magnetic tile 8, are used, which effectively reduces the cost of the motor and can achieve the effect of two traditional ball bearings and four magnetic tiles. On the one hand, it is due to the strong load resistance brought by the elastic material used in the motor described below, and on the other hand, it is due to the design of the motor magnetic circuit, so that it can achieve the effect of the traditional motor.

[0037] Specifically, refer to Figure 2 The top of the housing 1 is provided with a rubber cover 17, and the rubber cover 17 is connected to the upper wire rack 13. The rotating shaft 3 and the spring piece 5 are connected to each other through the magnetic tile seat 4 by injection molding.

[0038] Specifically, the spring piece 5 is made of elastic material.

[0039] In this embodiment, the spring sheet 5 made of elastic material is used here, which not only provides mechanical torque in addition to the electromagnetic torque generated by the motor itself, but also improves the load resistance capacity of the motor.

[0040] Specifically, refer to Figure 4 The magnetic tile seat 4 is provided with a mounting hole 4 - 1 connected to the rotating shaft 3 , and the rotating shaft 3 and the magnetic tile seat 4 are an injection-molded integrated structure, which facilitates the installation of the rotating shaft 3 and the magnetic tile seat 4 .

[0041] Specifically, refer to Figure 3 The rotating shaft 3 and the output shaft 2 are an integrated structure, or the rotating shaft and the output shaft are two parts that are riveted together to form an integrated structure.

[0042] In this embodiment, the rotating shaft 3 is combined with injection molding, and the rotating shaft 3 and the output shaft 2 are integrated or the rotating shaft and the output shaft are two parts that are riveted together to improve the strength of the motor rotor body.

[0043] Specifically, refer to Figure 5 The two sides of the bottom of the rubber cover 17 are provided with card plates 17 - 1 , and the two card plates 17 - 1 are arranged opposite to each other. The rubber cover 17 is connected to the upper wire frame 13 through the card plates 17 - 1 .

[0044] In this embodiment, the clamping plate 17 - 1 is used to ensure that the connection between the rubber cover 17 and the upper wire rack 13 and the stator assembly is reliable and stable, and the installation and disassembly are convenient.

[0045] In summary, the utility model has the advantages of improving the load resistance of the motor, reducing the cost of the motor, and improving the strength of the motor rotor body.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vibration motor with limited rotation angle, comprising a housing (1), a stator assembly and a rotor assembly arranged in the housing (1), characterized in that: The rotor assembly is arranged in the stator assembly; The rotor assembly comprises an output shaft (2) and a rotating shaft (3), wherein the rotating shaft (3) is connected to a magnetic tile seat (4), wherein the rotating shaft (3) is connected to a spring sheet (5) via the magnetic tile seat (4), wherein the magnetic tile seat (4) is connected to a spring sheet seat (6) via the spring sheet (5), wherein a first magnetic tile (7), a second magnetic tile (8), a first magnetic conductive sheet (9) and a second magnetic conductive sheet (10) are respectively arranged on the magnetic tile seat (4), wherein the first magnetic tile (7), the second magnetic tile (8), the first magnetic conductive sheet (9) and the second magnetic conductive sheet (10) are arranged opposite to each other in pairs around the magnetic tile seat (4); The stator assembly comprises a stator core (11), two windings of the stator core (11) are respectively wound with a coil (12), upper and lower ends of the coil (12) are respectively provided with an upper coil frame (13) and a lower coil frame (14), and the end of each coil (12) is provided with a coil lead (15) leading to the outside of the casing (1).

2. A vibration motor with limited rotation angle according to claim 1, characterized in that: A ball bearing (16) is sleeved on the output shaft (2), and the output shaft (2) is connected to the housing (1) via the ball bearing (16).

3. The limited-angle vibration motor according to claim 1, characterized in that: A rubber cover (17) is provided on the top of the casing (1), and the rubber cover (17) is connected to the upper wire rack (13).

4. The vibration motor with limited rotation angle according to claim 1, characterized in that: The spring sheet (5) is made of elastic material.

5. The vibration motor with limited rotation angle according to claim 1, characterized in that: The magnetic tile seat (4) is provided with a mounting hole (4-1) connected to the rotating shaft (3); the rotating shaft (3) and the magnetic tile seat (4) are an injection-molded integrated structure.

6. The vibration motor with limited rotation angle according to claim 1, characterized in that: The rotating shaft (3) and the spring sheet (5) are connected as one piece by injection molding through the magnetic tile seat (4).

7. The limited-angle vibration motor according to claim 1, characterized in that: The rotating shaft (3) and the output shaft (2) are of an integrated structure.

8. The limited-angle vibration motor according to claim 3, characterized in that: Clamping plates (17-1) are provided on both sides of the bottom of the rubber cover (17), and the two clamping plates (17-1) are arranged opposite to each other. The rubber cover (17) is connected to the upper wire frame (13) through the clamping plates (17-1).

9. The vibration motor with limited rotation angle according to claim 7, characterized in that: The rotating shaft (3) and the output shaft (2) are formed into an integrated structure by riveting.

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