A linear motor for small household appliances

Abstract

The present invention discloses a linear motor for small household appliances, comprising a casing, a mover bracket vertically arranged inside the casing, and a lead head vertically arranged at the top end of the mover bracket, and the mover bracket drives the lead head to move left and right inside the casing, the casing is provided with a first stator core and a second stator core, and the first stator core and the second stator core are respectively located at the side edges inside the casing, the mover bracket moves inside the first stator core and the second stator core, and coils are wound on both sides of the first stator core and the second stator core, after the coils are energized, N / S poles are generated on the teeth of the first stator core and the second stator core, which can push the mover bracket to move back and forth, and when no power is supplied, the first stator core and the second stator core are magnetically self-attracted to the mover bracket, so that the mover bracket translates inside the casing, thereby driving the lead head to translate at the top end of the casing.

Description

Technical Field

[0001] The present invention relates to the field of drive motors for small household appliances, and in particular to a linear motor for small household appliances. Background Art

[0002] Small household appliances refer to household appliances other than high-power appliances, such as shavers and electric clippers. They are usually driven by rotary motors, magnetic levitation motors, and sonic motors. However, traditional motors rotate by the inertia of the rotor and the deflection magnetic field generated by the commutator, and are linked with the eccentric wheel to convert the rotary motion into linear motion, resulting in slow overall operating efficiency, high noise, and large vibration amplitude. For this reason, a linear motor for small household appliances is proposed. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0004] The cam is secured to the chassis and the motor is installed so that the cam can move in a direction of rotation relative to the first and second motors and vice versa.

[0005] Preferably, a first magnet and a second magnet are vertically arranged on both sides of the mover bracket, and the first magnet is an N pole and the second magnet is an S pole. The first magnet is located on the outer side of the mover bracket, and the second magnet is located on the inner side of the mover bracket.

[0006] Preferably, one side of the first stator core is open and forms a first through hole parallel to the front and rear sides of the mover bracket, and the two sides inside the first through hole are obliquely arranged and form a first magnetic surface that is magnetically self-attracted to the mover bracket.

[0007] Preferably, one side of the second stator core is open and forms a second through hole parallel to the left and right sides of the mover bracket, and both sides of the second through hole are bent toward the inside of the second stator core to form a second magnetic surface that is magnetically self-attracted to the mover bracket.

[0008] Preferably, a wire rack is provided at the connection between the first stator core, the second stator core and the casing, and the wire rack is transversely arranged at the upper and lower ends inside the casing, and the mover bracket moves in the middle position of the wire rack.

[0009] Preferably, guide rails are laterally arranged at the upper and lower ends of the movable bracket, and the guide rails pass through the belt head. Both sides of the guide rails are connected to the two sides inside the casing, and the guide rails are laterally located at the upper and lower ends of the casing, and the movable bracket drives the belt head to move on the guide rails.

[0010] Preferably, the mover bracket is provided with a rear bearing seat, and the rear bearing seat and the mover bracket move in the same direction, the guide rail passes through the rear bearing seat, and the rear bearing seat moves on the guide rail.

[0011] Compared with the existing technology, the beneficial effects of the present invention are: it replaces the traditional rotary motor, can directly drive the belt head for translation and electrically connect the stator core with the external H-bridge circuit, pass positive and negative square wave signals, amplify the power through the H-bridge circuit, thereby changing the magnetic field between the stator core and the mover bracket and making the mover bracket run more efficiently in the casing, with less noise and vibration amplitude generated during operation.

[0012] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the structure of a linear motor for small household appliances;

[0015] Figure 2 Another structural schematic diagram of a linear motor for small household appliances;

[0016] Figure 3 This is another structural diagram of a linear motor for small household appliances;

[0017] Figure 4 Schematic diagram of the structure of the mover bracket;

[0018] Figure 5 This is another structural schematic diagram of the mover bracket.

[0019] As shown in the figure: 1. Casing, 2. Head, 3. Guide rail, 4. First stator core, 5. Wire rack, 6. Rear bearing seat, 7. First magnet, 8. Second magnet, 9. Mover bracket, 10. Second stator core. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 In an embodiment of the present invention, a linear motor for small household appliances includes a casing 1, a mover bracket 9 is vertically arranged inside the casing 1, and a belt head 2 is vertically arranged on the top of the mover bracket 9, and the mover bracket 9 drives the belt head 2 to move left and right inside the casing 1, and the casing 1 is provided with a first stator core 4 and a second stator core 10, and the first stator core 4 and the second stator core 10 are respectively located at the side edges of the inside of the casing 1, and the mover bracket 9 moves inside the first stator core 4 and the second stator core 10, and coils (not shown in the figure) are wound on both sides of the first stator core 4 and the second stator core 10. After the coil is energized, N / S poles are generated on the teeth of the first stator core 4 and the second stator core 10, which can push the mover bracket 9 back and forth. When the motor is running and when no power is supplied, the first stator core 4 and the second stator core 10 are magnetically self-attracted to the mover bracket 9, and then the mover bracket 9 is magnetically matched with the first stator core 4 and the second stator core 10 to make the mover bracket 9 translate inside the casing 1, thereby driving the belt head 2 to translate at the top of the casing 1, thereby replacing the traditional rotary motor, and can directly drive the belt head to translate and the first stator core 4 and the second stator core 10 to be electrically connected to the external H-bridge circuit, and the positive and negative square wave signals are passed through the H-bridge circuit to amplify the power so that the magnetic field between the first stator core 4 and the second stator core 10 and the mover bracket 9 changes, and the mover bracket 9 can run more efficiently in the casing 1, with less noise and vibration amplitude during operation.

[0022] The first magnetic steel 7 and the second magnetic steel 8 are vertically arranged on both sides of the movable bracket 9, and the first magnetic steel 8 is the N pole, and the second magnetic steel 10 is the S pole. The first magnetic steel 8 is located on the outer side of the movable bracket 9, and the second magnetic steel 10 is located on the inner side of the movable bracket 9, and the movable bracket 9 is magnetically self-absorbed between the first magnetic steel 8 and the second magnetic steel 10 and the first stator core 4 and the second stator core 10.

[0023] One side of the first stator core 4 is open and forms a first through hole (not shown in the figure) parallel to the front and rear sides of the mover bracket 9, and the two sides inside the first through hole are obliquely arranged to form a first magnetic surface (not shown in the figure) that is magnetically self-attracted to the second magnetic steel 8 on the mover bracket 9, and the cooperation between the first magnetic surface and the second magnetic steel 8 enables the first stator core 4 and the mover bracket 9 to be magnetically self-attracted when no power is applied.

[0024] One side of the second stator core 10 is open and forms a second through hole (not shown in the figure) parallel to the left and right sides of the mover bracket 9, and the two sides of the second through hole are bent toward the inside of the second stator core 10 to form a second magnetic surface (not shown in the figure) that is magnetically self-attracted to the first magnetic steel 7 on the mover bracket 9, and the cooperation between the second magnetic surface and the first magnetic steel 7 enables the second stator core 10 and the mover bracket 9 to be magnetically self-attracted when no power is applied.

[0025] A bobbin 5 is provided at the connection between the first stator core 4 and the second stator core 10 and the casing 1, and the bobbin 5 is horizontally arranged at the upper and lower ends inside the casing 1, and the mover bracket 9 moves in the middle position of the bobbin 5, and then through the cooperation between the bobbin 5 and the first stator core 4 and the second stator core 10, the coil can be wound on the bobbin 5 and the first stator core 4 and the second stator core 10.

[0026] Guide rails 3 are horizontally arranged at the upper and lower ends of the movable bracket 9, and the guide rails 3 pass through the belt head 2. Both sides of the guide rails 3 are connected to the two sides inside the casing 1, and the guide rails 3 are horizontally located at the upper and lower ends of the casing 1, and the movable bracket 9 drives the belt head 5 to move on the guide rails 3, so that the belt head 6 will not deviate during the movement and the movable bracket 9 will not offset when moving inside the casing 1.

[0027] The mover bracket 9 is provided with a rear bearing seat 6, and the rear bearing seat 6 and the mover bracket 4 move in the same direction. The guide rail 3 passes through the rear bearing seat 6, and the rear bearing seat 6 moves on the guide rail 3, so that the rear bearing seat 6 drives the mover bracket 4 to move when it moves on the guide rail 3.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. A linear motor for small household appliances, comprising a housing, characterized in that: The cam is secured to the chassis and has a first end secured thereto and a second end secured thereto for securing the chassis to a first position and a second end secured thereto for securing the chassis to a first position and a second end secured thereto for securing the chassis to a first position.

2. A linear motor for small household appliances according to claim 1, characterized in that: A first magnetic steel and a second magnetic steel are vertically arranged on both sides of the mover bracket, and the first magnetic steel is an N pole, and the second magnetic steel is an S pole. The first magnetic steel is located on the outer side of the mover bracket, and the second magnetic steel is located on the inner side of the mover bracket.

3. The linear motor for small household appliances according to claim 1, characterized in that: One side of the first stator core is open and forms a first through hole parallel to the front and rear sides of the mover bracket, and the two sides inside the first through hole are obliquely arranged to form a first magnetic surface that is magnetically self-attracted to the mover bracket.

4. The linear motor for small household appliances according to claim 1, characterized in that: One side of the second stator core is open and forms a second through hole parallel to the left and right sides of the mover bracket, and both sides of the second through hole are bent toward the inside of the second stator core to form a second magnetic surface that is magnetically self-attracted to the mover bracket.

5. The linear motor for small household appliances according to claim 1, characterized in that: A wire rack is provided at the connection between the stator core and the casing, and the wire rack is transversely arranged at the upper and lower ends of the casing, and the mover bracket moves in the middle position of the wire rack.

6. The linear motor for small household appliances according to claim 1, characterized in that: Guide rails are laterally arranged at the upper and lower ends of the movable bracket, and the guide rails pass through the belt head. Both sides of the guide rails are connected to the two sides inside the casing, and the guide rails are laterally located at the upper and lower ends of the casing, and the movable bracket drives the belt head to move on the guide rails.

7. A linear motor for small household appliances according to claim 6, characterized in that: The mover bracket is provided with a rear bearing seat, and the rear bearing seat and the mover bracket move in the same direction. The guide rail passes through the rear bearing seat, and the rear bearing seat moves on the guide rail.

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