Vibration motor

Abstract

The utility model discloses a vibration motor, which comprises a casing, the inner side of the casing is provided with winding teeth, the winding teeth comprise a limiting convex rib and a winding convex rib, the limiting convex rib extends around the center of the casing, one end of the winding convex rib is connected to the middle of the limiting convex rib, and the other end of the winding convex rib is connected to the other end of the limiting convex rib. The other end of the winding convex rib is connected to the inner side of the machine shell, at least two winding teeth are arranged on the inner side of the machine shell in a surrounding mode, and winding coils are arranged on the outer sides of the winding teeth. A permanent magnet is arranged on the outer side of the rotor, at least two magnetic poles are formed on the permanent magnet, and every two adjacent magnetic poles are opposite; according to the utility model, the internal structure is simplified, the motor assembling procedures are reduced, the production cost is reduced, and the assembling efficiency of the motor is improved, so that the product competitiveness is improved.

Description

Technical Field

[0001] This utility model relates to an electric motor, and more particularly to a vibration motor. Background Technology

[0002] Vibratory motors achieve these special functions by generating vibrations. They are widely used in daily life, such as in electric toothbrushes. As a key component, the cost of the vibratory motor directly affects the overall pricing and market competitiveness of the product. Currently, vibratory motors contain a magnetic yoke with permanent magnets fixed to it. The rotor windings are installed inside the motor, and the alternating magnetic field generated when the winding coils are energized, along with the alternating attraction between two pairs of permanent magnets, causes the rotor windings to oscillate back and forth. However, this type of vibratory motor has a complex internal structure and installation, resulting in high overall production costs. Therefore, there is an urgent need for a vibratory motor with lower production costs. Summary of the Invention

[0003] The purpose of this utility model is to provide a vibration motor to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A vibration motor includes: a housing with winding teeth arranged on its inner side, the winding teeth including limiting ribs and winding ribs, the limiting ribs extending around the center of the housing, one end of the winding ribs being connected to the middle of the limiting ribs, and the other end of the winding ribs being connected to the inner side of the housing, at least two winding teeth being arranged around the inner side of the housing, and a winding coil being arranged on the outer side of the winding teeth; a rotor with a permanent magnet arranged on its outer side, the permanent magnet forming at least two magnetic poles, adjacent magnetic poles being opposite in direction; and an output shaft passing through the middle of the rotor and rotatably connected to the housing.

[0006] This technical solution has at least the following beneficial effects: Winding teeth are provided inside the housing for winding, and the winding coil is wound and fixed on the winding ribs. Limiting ribs are used to block and limit the winding coil. Thus, a structure for installing and fixing the winding coil is provided inside the housing, and the rotor is rotatably installed inside the housing. Two opposite magnetic poles are formed on the outside of the rotor, and the rotor's power is directly transmitted to the output shaft. At this point, there is no need to set a magnetic yoke inside the housing; the permanent magnet is directly fixed to the rotor. Therefore, the internal structure is simplified, the motor assembly process is reduced, production costs are lowered, and the assembly efficiency of the motor is improved, thereby enhancing product competitiveness.

[0007] As a further improvement to the above technical solution, the rotor includes a first rotating core with a first fixed channel in the middle. The output shaft passes through the first fixed channel. The permanent magnet is annular in shape and is sleeved on the outside of the first rotating core. At least two magnetic poles are formed on the outside of the permanent magnet. In this case, there is only one permanent magnet. Utilizing its annular structure, it is sleeved and fixed on the outside of the first rotating core, and at least two magnetic poles are formed on its outside. Two different and opposite magnetic poles are respectively arranged on both sides of a winding coil, thereby forming a rotor.

[0008] As a further improvement to the above technical solution, the rotor includes a second rotating core, with a second fixed channel in the middle of the second rotating core. The output shaft passes through the second fixed channel. The permanent magnet is strip-shaped, and at least two permanent magnets are connected to the outside of the second rotating core, each forming a magnetic pole. In this case, the number of permanent magnets is at least two, and each permanent magnet forms a magnetic pole that interacts with the winding coil. Multiple permanent magnets are fixed to the outside of the second rotating core. If the number of winding coils is the same as the number of permanent magnets, then when all permanent magnets are distributed around the second rotating core, the south and north poles alternate. If the number of permanent magnets is twice the number of winding coils, then two permanent magnets with opposite magnetic poles are always positioned on either side of a winding coil.

[0009] As a further improvement to the above technical solution, at least two fixing slots are provided around the outer side of the second rotor core, and at least two permanent magnets are respectively fixed in the at least two fixing slots. The fixing slots formed on the outer side of the second rotor core for installing and fixing the permanent magnets improve the convenience and stability of the permanent magnet installation and positioning, and increase the efficiency of rotor assembly.

[0010] As a further improvement to the above technical solution, winding frames are respectively connected to both ends of the limiting rib inside the housing, and the winding coil is disposed on the outside of the two winding frames and the limiting rib. When the winding coil is wound on the outside of the limiting rib, the entire winding coil is wound and fixed between the two winding frames and the limiting rib, thereby facilitating the winding and fixing of the winding coil and further improving the efficiency of stator assembly.

[0011] As a further improvement to the above technical solution, the winding frame is made of plastic. Plastic winding frames are less expensive and, together with the limiting ribs, define the position of the winding coil, thus balancing overall performance and further reducing overall production costs.

[0012] As a further improvement to the above technical solution, a first chamber is provided on the inner side of one end of the housing, and a first bearing is provided between the output shaft and the first chamber. The first chamber provides a mounting position for the first bearing, which facilitates the quick and stable connection of the first bearing to the housing, thereby enhancing the efficiency and stability of the assembly connection between the output shaft and the housing.

[0013] As a further improvement to the above technical solution, an end cap is connected to the other end of the housing. A second chamber is provided on the side of the end cap near the housing, and a second bearing is provided between the output shaft and the second chamber. The second chamber also provides a mounting position for the second bearing, thereby facilitating the quick and stable connection of the second bearing to the housing and enhancing the efficiency and stability of the assembly connection between the output shaft and the housing.

[0014] As a further improvement to the above technical solution, the end cover is provided with a wire-passing hole. The end cover has a wire-passing hole for leading the winding coil to the outside of the housing, improving the convenience of use.

[0015] As a further improvement to the above technical solution, the casing is circular or square in shape. The shape of the casing can be selected as circular or square according to the needs of the usage scenario, making it flexible and convenient to use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is an overall front view of the present invention.

[0018] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0019] Figure 3 yes Figure 1 A schematic diagram of the BB cross-sectional structure.

[0020] Figure 4 This is a schematic diagram of the casing structure of this utility model.

[0021] In the attached diagram: 100-casing, 110-winding teeth, 111-limiting rib, 112-winding rib, 120-winding coil, 130-end cover, 210-permanent magnet, 220-second rotating core, 300-output shaft, 310-first bearing, 320-second bearing, 400-winding frame. Detailed Implementation

[0022] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connection relationships mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0023] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A vibration motor includes: a housing 100, on the inner side of which are arranged winding teeth 110, the winding teeth 110 including limiting ribs 111 and winding ribs 112, the limiting ribs 111 extending around the center of the housing 100, one end of the winding ribs 112 being connected to the middle of the limiting ribs 111, and the other end of the winding ribs 112 being connected to the inner side of the housing 100, at least two winding teeth 110 being arranged around the inner side of the housing 100, and a winding coil 120 being arranged on the outer side of the winding teeth 110; a rotor, on the outer side of which are arranged permanent magnets 210, the permanent magnets 210 forming at least two magnetic poles, the adjacent two magnetic poles being opposite; and an output shaft 300 passing through the middle of the rotor and rotatably connected to the housing 100.

[0024] In this vibration motor, the inner side of the housing 100 is provided with winding teeth 110 for winding, and the winding coil 120 is wound and fixed on the winding rib 112. The limiting rib 111 is used to block and limit the winding coil 120. In this way, the structure for installing and fixing the winding coil 120 is provided inside the housing 100, and the rotor is rotatably installed inside the housing 100. Two opposite magnetic poles are formed on the outside of the rotor, and the power of the rotor is directly transmitted to the output shaft 300. At this time, it is not necessary to set a magnetic yoke inside the housing 100. The permanent magnet 210 is directly fixed on the rotor. Therefore, the internal structure is simplified, the motor assembly process is reduced, the production cost is reduced, and the assembly efficiency of the motor is improved, thereby improving the product competitiveness.

[0025] In one embodiment of the rotor's specific structure, the rotor includes a first rotating core with a first fixed channel in its center. The output shaft 300 passes through the first fixed channel. The permanent magnet 210 is annular in shape and is fitted onto the outside of the first rotating core. At least two magnetic poles are formed on the outer side of the permanent magnet 210. In this case, there is only one permanent magnet 210. Utilizing its annular structure, it is fitted and fixed onto the outside of the first rotating core, and at least two magnetic poles are formed on its outer side. Two different and opposite magnetic poles are respectively arranged on both sides of a winding coil 120, thereby forming the rotor.

[0026] In a second embodiment of the rotor structure, the rotor includes a second rotor core 220. A second fixed channel is provided in the middle of the second rotor core 220, through which the output shaft 300 passes. The permanent magnet 210 is strip-shaped, and at least two permanent magnets 210 are connected to the outside of the second rotor core 220 to form magnetic poles. At this time, the number of permanent magnets 210 is at least two, and each permanent magnet 210 forms a magnetic pole that interacts with the winding coil 120. Multiple permanent magnets 210 are fixed to the outside of the second rotor core 220. If the number of winding coils 120 is the same as the number of permanent magnets 210, then when all permanent magnets 210 are distributed around the second rotor core 220, the south and north poles alternate. If the number of permanent magnets 210 is twice the number of winding coils 120, then two permanent magnets 210 with opposite magnetic poles are always arranged on both sides of each winding coil 120.

[0027] Furthermore, at least two fixing slots are provided around the outer side of the second rotor core 220, and at least two permanent magnets 210 are respectively fixed in the at least two fixing slots. The fixing slots formed on the outer side of the second rotor core 220 for installing and fixing the permanent magnets 210 improve the convenience and stability of installing and positioning the permanent magnets 210, and improve the efficiency of rotor assembly.

[0028] The winding coil 120 can be directly fixed to the outside of the limiting rib 111. To improve the efficiency of winding and fixing the winding coil 120, in this embodiment, winding frames 400 are respectively connected to both ends of the limiting rib 111 inside the housing 100. The winding coil 120 is disposed on the outside of the two winding frames 400 and the limiting rib 111. When the winding coil 120 is wound on the outside of the limiting rib 111, the entire winding coil 120 is wound and fixed between the two winding frames 400 and the limiting rib 111, thereby facilitating the winding and fixing of the winding coil 120 and further improving the efficiency of assembling the stator.

[0029] The limiting rib 111 can be an integrally formed structure with the housing 100, made of metal, to enhance the overall structural stability. The winding frame is mainly used to facilitate winding. To better control costs, in this embodiment, the winding frame 400 is made of plastic. The plastic winding frame 400 is less expensive and, together with the limiting rib 111, forms a position limit for the winding coil 120, which balances overall performance and further reduces overall production costs.

[0030] In some embodiments, a first chamber is provided on the inner side of one end of the housing 100, and a first bearing 310 is provided between the output shaft 300 and the first chamber. The first chamber provides a position for the first bearing 310 to be installed, which facilitates the quick and stable connection of the first bearing 310 to the housing 100, thereby enhancing the efficiency and stability of the assembly connection between the output shaft 300 and the housing 100.

[0031] In some embodiments, an end cap 130 is connected to the other end of the housing 100. A second chamber is provided on the side of the end cap 130 near the housing 100, and a second bearing 320 is provided between the output shaft 300 and the second chamber. The second chamber also provides a mounting position for the second bearing 320, thereby facilitating the quick and stable connection of the second bearing 320 to the housing 100 and enhancing the efficiency and stability of the assembly connection between the output shaft 300 and the housing 100.

[0032] In some embodiments, the end cover 130 is provided with a wire-passing hole. The end cover 130 is provided with a wire-passing hole for the winding coil 120 to be led out of the housing 100, which improves the convenience of use.

[0033] In some embodiments, the housing 100 is circular or square in shape. The shape of the housing 100 can be selected as circular or square according to the needs of the usage scenario, making it flexible and convenient to use.

[0034] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A vibration motor, characterized in that: include: The housing (100) has a winding tooth (110) on its inner side. The winding tooth (110) includes a limiting rib (111) and a winding rib (112). The limiting rib (111) extends around the center of the housing (100). One end of the winding rib (112) is connected to the middle of the limiting rib (111), and the other end of the winding rib (112) is connected to the inner side of the housing (100). At least two winding teeth (110) are arranged around the inner side of the housing (100). A winding coil (120) is arranged on the outer side of the winding tooth (110). The rotor has a permanent magnet (210) on its outer side, the permanent magnet (210) having at least two magnetic poles, with adjacent magnetic poles being opposite in direction; An output shaft (300) passes through the middle of the rotor and is rotatably connected to the housing (100).

2. A vibration motor according to claim 1, characterized in that: The rotor includes a first rotating core, a first fixed channel is provided in the middle of the first rotating core, the output shaft (300) passes through the first fixed channel, the permanent magnet (210) is annular in shape, the permanent magnet (210) is sleeved on the outside of the first rotating core, and at least two magnetic poles are formed on the outside of the permanent magnet (210).

3. A vibration motor according to claim 1, characterized in that: The rotor includes a second rotor core (220), a second fixed channel is provided in the middle of the second rotor core (220), the output shaft (300) passes through the second fixed channel, the permanent magnet (210) is strip-shaped, and at least two permanent magnets (210) are connected to the outside of the second rotor core (220) to form the magnetic poles respectively.

4. A vibration motor according to claim 3, characterized in that: The second rotating core (220) has at least two fixing grooves around its outer side, and at least two permanent magnets (210) are respectively fixed in the at least two fixing grooves.

5. A vibration motor according to claim 1, characterized in that: Inside the housing (100), winding frames (400) are respectively connected to both ends of the limiting rib (111), and the winding coil (120) is disposed outside the two winding frames (400) and the limiting rib (111).

6. A vibration motor according to claim 5, characterized in that: The winding frame (400) is made of plastic.

7. A vibration motor according to claim 1, characterized in that: A first chamber is provided on the inner side of one end of the housing (100), and a first bearing (310) is provided between the output shaft (300) and the first chamber.

8. A vibration motor according to claim 1, characterized in that: The other end of the housing (100) is connected to an end cover (130), and a second chamber is provided on the side of the end cover (130) near the housing (100). A second bearing (320) is provided between the output shaft (300) and the second chamber.

9. A vibration motor according to claim 8, characterized in that: The end cap (130) is provided with a threading hole.

10. A vibration motor according to claim 1, characterized in that: The casing (100) is circular or square in shape.

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