Swing motor

Abstract

The utility model discloses a swing motor, which comprises a main body piece, a stator coil assembly and a magnet, the main body piece comprises a mounting seat, a swinging seat and at least two elastic pieces which are arranged left and right at intervals, the two ends of the elastic pieces are connected with the swinging seat and the mounting seat respectively, and the mounting seat, the swinging seat and the elastic pieces are integrally formed in a simultaneous injection molding mode; the stator coil assembly is installed on the installation seat and located between the installation seat and the swing seat, and the magnet is arranged on the swing seat and adjacent to the stator coil assembly. Extending seats extend upwards from the left and right end parts of the mounting seat and are positioned on two sides of the swinging seat, and reset springs are arranged between the extending seats; a first mounting position for mounting the swing rod is arranged on the upper surface of the swing seat; the reset springs are arranged on the two sides of the swing seat, the height of the reset springs is reduced, and the upper portion of the main body piece can be omitted, so that the overall height of the motor is reduced, the ratio of the height to the width is smaller, and the motor is smaller in size, wider in application range and application scene and capable of being used in more products.

Description

Technical Field

[0001] This utility model relates to the field of furniture, and in particular to a swing motor. Background Technology

[0002] Electric personal care devices such as shavers and electric clippers require blades to perform high-frequency reciprocating motion, a process that requires the assistance of a motor and transmission structure. In existing technologies, the commonly used transmission structure is usually a motor driving an eccentric wheel to rotate at high speed. The eccentric wheel is connected to the end of the blade holder, thereby realizing the high-frequency reciprocating motion of the blades. However, this technology has technical problems such as high wear and large size.

[0003] To address the aforementioned technical challenges, manufacturers have designed brushless magnetic levitation motors. When powered on, these motors generate a magnetic field through their coil assembly, which continuously changes its direction. This drives a self-aligning oscillating seat to swing. The oscillating seat, via a drive rod, moves the blades. Magnets are located within the oscillating seat, and the magnetic field alternates between positive and negative directions. When subjected to a positive magnetic field, the oscillating seat swings in one direction. When the positive magnetic field ends and the field reverses, the oscillating seat immediately returns to center and continues swinging in the opposite direction. When the field returns to positive, the oscillating seat swings back to the first direction, repeating this cycle continuously to complete the task. However, while existing motors reduce wear, their production and assembly are more complex, resulting in lower production efficiency. This is primarily because the number of internal parts remains large, and these parts are smaller, increasing assembly difficulty and requiring numerous assembly steps, thus reducing production efficiency.

[0004] There is a type of motor disclosed in Chinese invention application CN202410934197.X. This motor is relatively square, with a height-to-width ratio close to 1. This is because return springs need to be set on both sides of the swing direction of the swing seat to provide it with a return force and also increase the swing force and speed. Due to its structural limitations, the swing seat needs to extend upward to coincide with the outer bracket in order to install the return springs. This results in its size ratio and volume being limited, and its application scenarios are also limited, making it impossible to install in smaller devices.

[0005] There are also some earlier flat-shaped motors that are similar to or the same as Chinese utility model patent CN201320171336.5. Although these motors reduce the ratio of height to width, due to the special design of the elastic elements and swing plates, they need to be integrally molded with the same material as the magnet mounting base. This results in high requirements for the plastic material, making production difficult and costly. Summary of the Invention

[0006] To address the aforementioned technical problems, this utility model provides a swing motor, comprising a main body, a stator coil assembly, and a magnet. The main body includes a mounting base, a swing base, and at least two springs spaced apart on the left and right sides. The two ends of each spring are connected to the swing base and the mounting base, respectively. The mounting base, swing base, and springs are integrally molded using a single injection molding process. The stator coil assembly is mounted on the mounting base, positioned between the mounting base and the swing base. The magnet is located on the swing base and adjacent to the stator coil assembly. Extension seats extend upwards from both ends of the mounting base and are located on both sides of the swing base, with return springs positioned between them. A first mounting position for mounting a swing arm is provided on the upper surface of the swing base. In this design, the return springs are positioned on both sides of the swing base. By reducing the height of the return springs, the upper portion of the main body can be omitted, significantly reducing the overall height of the motor. This results in a smaller height-to-width ratio, making the motor smaller in size, more adaptable to various applications, and usable in a wider range of products.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A swing motor includes a main body, a stator coil assembly, and a magnet. The main body includes a mounting base, a swing base, and at least two springs. The two springs are arranged spaced apart from each other, and their two ends are respectively connected to the swing base and the mounting base. The mounting base, the swing base, and the springs are all integrally formed. The stator coil assembly is disposed on the mounting base and located between the mounting base and the swing base. The magnet is disposed on the swing base and adjacent to the stator coil assembly. Both ends of the mounting base have upwardly extending extension seats, which are located on the left and right sides of the swing base. A return spring is provided on each of the left and right sides of the swing base, with its two ends respectively disposed on the swing base and the extension seats. A first mounting position is provided on the upper surface of the swing base, which is configured to mount a swing rod.

[0009] In this solution, the mounting base, swing base, and spring are integrally molded by injection molding. The entire main body is a single component during assembly. Only the stator coil assembly and magnet need to be installed on it to complete the production and assembly of the motor. Thanks to the fewer components and simplified structure of the motor, its production and assembly are simpler and faster, thereby improving production efficiency.

[0010] In existing technologies, the return springs are all located on both sides of the swing arm, that is, above the swing base. Therefore, the motors in existing technologies are forced to have a higher overall height to accommodate the installation of the return springs. However, in this solution, the return springs are located on both sides of the swing base. After reducing the height of the return springs, the upper part of the main body can be omitted, thereby greatly reducing the overall height of the motor. The height-to-width ratio is smaller, making the motor smaller in size, with a wider range of applications and scenarios, and enabling its use in more products.

[0011] The spring and return spring in this solution are made of conventional materials, which are easy and inexpensive to produce, overcoming the problems of early flat-shaped motors.

[0012] The first mounting position is formed by a downward indentation on the upper surface of the swing seat. Different styles of swing rods can be installed on the swing seat as long as they have a seat that matches the first mounting position. Since various styles of swing rods can be installed, the motor has a wider range of applications and can be used in different products.

[0013] Preferably, there are two swing seats, each with a magnet underneath, and the two magnets are arranged with opposite magnetic properties. In this design, after connecting swing rods and blades to both swing seats, a single drive of the stator coil assembly can cause the two swing seats to swing in opposite directions, resulting in higher working efficiency.

[0014] Preferably, there are two springs, each with a dividing groove from top to bottom, which divides the upper and middle parts of the spring into front and back sections. The lower part of the spring is complete and forms a lower connecting part, which is fixedly connected to the mounting base. The upper part of the spring is divided into two upper connecting parts, which are fixedly connected to two swing seats respectively. This unique design of the springs allows each motor to achieve double swing with only two springs, that is, only one spring on each side, further reducing the number of parts and lowering production costs.

[0015] Preferably, both the upper and lower connecting parts are provided with injection holes. When the spring sheet is integrally injection molded with the mounting base and the swing base, the mounting base and the swing base will naturally enter the injection holes, thereby making the injection more secure.

[0016] Preferably, the middle part of the spring is hollowed out under the action of the dividing groove, and the hollowed-out part is elliptical.

[0017] Preferably, the side end face of the swing seat has a boss protruding from the side end face, and the end face of the extension seat facing the swing seat has a groove. One end of the return spring is sleeved on the boss, and the other end of the return spring is placed in the groove. This securely installs the return spring.

[0018] Preferably, the mounting base is roughly U-shaped, with the swing arm, spring, and stator coil assembly all located within it in the left-right direction. The mounting base encloses the swing arm, spring, and stator coil, thus having a larger proportion in the width direction. The mounting base includes a horizontal base and two vertical bases at both ends of the horizontal base. The spring is mounted on the horizontal base, and there is a gap between the vertical bases and the spring. There is also a gap between the spring and the stator coil assembly. The extension base is part of the vertical base, and its thickness in the left-right direction is thinner than the rest of the vertical base. The gap between the extension base and the swing arm is larger than the gap between the vertical base and the spring. In the prior art, because the return spring requires a certain gap for installation, it is installed on both sides of the swing arm. However, there is insufficient installation space on both sides of the swing arm. In this solution, by increasing the proportion of the mounting base's width, sufficient space is provided between the swing arm and the extension base for installing the return spring, thus achieving a reduction in the overall height of the motor.

[0019] Preferably, the mounting base has reinforcing plates on both the front and rear ends, and the reinforcing plates are configured to fix the stator coil assembly in the front-rear direction.

[0020] Preferably, the distance between the top surface of the swing base and the bottom surface of the mounting base is the motor height, and the distance between the left and right end faces of the mounting base is the motor width. The ratio of motor height to motor width is no greater than 0.58. Taking a shaver as an example, since the swing motor also needs to be equipped with a swing arm to connect the blades, the height of the product will be further increased. If a motor with a height-to-width ratio close to 1 is used, the product can only be long and narrow, with a large volume ratio and a lot of wasted space, causing inconvenience in placement or carrying in daily life. The lower height-to-width ratio of the internal motor makes the height-to-width ratio of the complete product more controllable, thereby making the product smaller and more portable.

[0021] Preferably, the swing seat is a strip-shaped body arranged horizontally in the left-right direction, and the length of the swing seat in the left-right direction is less than the length of the mounting seat in the left-right direction; the height of the extension seat is configured to at least exceed the lower end of the swing seat and provide a position for the return spring; there is a gap between the extension seat and the swing seat, and the return spring is arranged horizontally in the left-right direction between the end face of the swing seat and the end face of the extension seat.

[0022] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0023] In this solution, the mounting base, swing base, and spring are integrally molded by injection molding. The entire main body is a single component during assembly. Only the stator coil assembly and magnet need to be installed on it to complete the production and assembly of the motor. Thanks to the fewer components and simplified structure of the motor, its production and assembly are simpler and faster, thereby improving production efficiency.

[0024] In existing technologies, the return springs are all located on both sides of the swing arm, that is, above the swing base. Therefore, the motors in existing technologies are forced to have a higher overall height to accommodate the installation of the return springs. However, in this solution, the return springs are located on both sides of the swing base. After reducing the height of the return springs, the upper part of the main body can be omitted, thereby greatly reducing the overall height of the motor. The height-to-width ratio is smaller, making the motor smaller in size, with a wider range of applications and scenarios, and enabling its use in more products.

[0025] The spring and return spring in this solution are made of conventional materials, which are easy and inexpensive to produce, overcoming the problems of early flat-shaped motors.

[0026] The first mounting position is formed by a downward indentation on the upper surface of the swing seat. Different styles of swing rods can be installed on the swing seat as long as they have a seat that matches the first mounting position. Since various styles of swing rods can be installed, the motor has a wider range of applications and can be used in different products. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the swing motor in an embodiment of the present invention;

[0028] Figure 2 This is an exploded view of the swing motor in an embodiment of the present invention;

[0029] Figure 3 This is a three-dimensional structural diagram of the main component in an embodiment of the present invention;

[0030] Figure 4 This is a front view of the main component of the present invention in an embodiment;

[0031] Figure 5 This is a three-dimensional structural diagram of the present invention showing the installation of a return spring between the swing seat and the extension seat in an embodiment.

[0032] Figure 6 This is a three-dimensional structural diagram of the spring sheet in an embodiment of the present invention.

[0033] The reference numerals in the attached drawings are as follows: main body 1; mounting base 11; horizontal base 111; vertical base 112; swing base 12; groove 121; first mounting position 122; spring piece 13; partition groove 131; lower connecting part 132; upper connecting part 133; injection hole 134; stator coil assembly 2; magnet 3; return spring 4; extension base 5; boss 51; reinforcing plate 6. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] The specific implementation of this utility model is as follows:

[0038] like Figure 1 , 2 As shown, this utility model provides a swing motor, including a main body 1, a stator coil assembly 2, and a magnet 3; the main body 1 includes a mounting base 11, a swing base 12, and at least two spring pieces 13, which are arranged at intervals on the left and right sides, and the two ends of the spring pieces 13 are respectively connected to the swing base 12 and the mounting base 11. The mounting base 11, the swing base 12, and the spring pieces 13 are all integrally formed; the stator coil assembly 2 is disposed on the mounting base 11 and located between the mounting base 11 and the swing base 12, and the magnet 3 is disposed on the swing base 12 and adjacent to the stator coil assembly 2.

[0039] In this solution, the mounting base 11, the swing base 12, and the spring piece 13 are integrally molded by injection molding. The entire main body 1 is a single component during assembly. Only the stator coil assembly 2 and the magnet 3 need to be installed on it to complete the production and assembly of the motor. Thanks to the fact that the motor has fewer components and a simplified structure, its production and assembly are simpler and faster, thereby improving production efficiency.

[0040] Specifically, such as Figure 1-3As shown, there are two swing seats 12, each with a magnet 3 below it, and the two magnets 3 are arranged with opposite magnetic properties. After the swing rod and blade are connected to each of the two swing seats 12, a single drive of the stator coil assembly 2 can make the two swing seats 12 swing in opposite directions, resulting in higher working efficiency. There are two spring pieces 13, each with a dividing groove 131 from top to bottom, which is configured to divide the upper and middle parts of the spring piece 13. The lower part of the spring piece 13 is complete and forms a lower connecting part 132, which is fixedly connected to the mounting base 11. The upper part of the spring piece 13 is divided into two upper connecting parts 133, which are fixedly connected to the two swing seats 12 respectively. Through the unique design of the spring piece 13, each motor only needs two spring pieces 13 to achieve double swing, that is, only one spring piece 13 is needed on each side, which further reduces the number of parts and lowers the production cost.

[0041] The mounting base 11 is generally U-shaped. In the left-right direction, the swing seat 12, the spring 13, and the stator coil assembly 2 are all located within the mounting base 11. The mounting base 11 surrounds the swing seat 12, the spring 13, and the stator coil, thus its proportion in the width direction is larger. Specifically, as... Figure 2-5 As shown, the mounting base 11 includes a horizontal base 111 and two vertical bases 112 located at both ends of the horizontal base 111. A spring 13 is disposed on the horizontal base 111, and there is a gap between the vertical bases 112 and the spring 13. There is also a gap between the spring 13 and the stator coil assembly 2. Both the left and right ends of the mounting base 11 have upwardly extending extension seats 5, which are part of the vertical bases 112. The extension seats 5 are located on the left and right sides of the swing base 12, and both are at the same height. A return spring 4 is provided on each of the left and right sides of each swing base 12, and the return springs 4 are arranged in the left-right direction. The two ends of the return spring 4 are respectively set on the swing seat 12 and the extension seat 5. In the prior art, the return spring 4 is set on both sides of the swing rod, that is, above the swing seat 12. Therefore, the motor of the prior art is forced to have a higher overall height to accommodate the installation of the return spring 4. However, in this solution, the return spring 4 is set on both sides of the swing seat 12. After reducing the height of the return spring 4, the upper part of the main body 1 can be omitted, thereby greatly reducing the overall height of the motor, making the motor smaller in size, with a wider range of applications and more applicable scenarios, and enabling it to be used in more products.

[0042] Furthermore, the extension seat 5 is part of the vertical seat 112. The thickness of the extension seat 5 in the left-right direction is thinner than the thickness of the rest of the vertical seat 112. The gap between the extension seat 5 and the swing seat 12 is larger than the gap between the vertical seat 112 and the spring piece 13. In the prior art, since the return spring 4 requires a certain gap to be installed, it is installed on both sides of the swing rod. However, there is not enough installation space on both sides of the swing seat 12. In this solution, by increasing the proportion of the width of the mounting seat 11, there is enough space between the swing seat 12 and the extension seat 5 to install the return spring 4, thus achieving a reduction in the overall height of the motor.

[0043] The side end face of the swing seat 12 is provided with a groove 121, and the end face of the extension seat 5 facing the swing seat 12 is provided with a boss 51. One end of the return spring 4 is provided on the groove 121, and the other end of the return spring 4 is provided on the boss 51, so as to securely install the return spring 4.

[0044] In addition, the upper surface of the swing base 12 is provided with a first mounting position 122, which is configured to mount the swing rod. The first mounting position 122 is formed by a downward indentation of the upper surface of the swing base 12. Different styles of swing rods can be set on the swing base 12 as long as they have a seat that matches the first mounting position 122. Since various styles of swing rods can be set, the motor has a wider range of applications and can be used in different products.

[0045] like Figure 6 As shown, injection holes 134 are provided on both the upper connecting part 133 and the lower connecting part 132 of the spring piece 13. When the spring piece 13 is integrally injection molded with the mounting base 11 and the swing base 12, the mounting base 11 and the swing base 12 will naturally enter the injection hole 134, thereby making the injection more secure. The middle part of the spring piece 13 is hollowed out under the action of the dividing groove 131, and the hollow is elliptical.

[0046] like Figure 1 , 2 As shown, reinforcing plates 6 are fixedly installed on both the front and rear ends of the mounting base 11. The reinforcing plates 6 are configured to fix the stator coil assembly 2 in the front-rear direction. The cross seat 111 is thinned, and the reinforcing plate 6 protrudes at this location. The protrusion of the reinforcing plate 6 enters the space formed by the thinning at this location. The reinforcing plate 6 is connected and fixed to the mounting base 11 by screws. The reinforcing plate 6 is made of resin injection molding.

[0047] More specifically, the distance between the top surface of the swing base 12 and the bottom surface of the mounting base 11 is the motor height, and the distance between the left and right end faces of the mounting base 11 is the motor width. The ratio of the motor height to the motor width is no greater than 0.58. In this embodiment, the motor height is 19.5mm and the motor width is 35mm, so the ratio is approximately 0.56. Taking a shaver as an example, since the swing motor also needs to be equipped with a swing rod to connect the blades, the height of the product will be further increased. If a motor with a height-to-width ratio close to 1 is used, the product can only be long and narrow, with a large volume ratio and a lot of wasted space, causing inconvenience in placement or carrying in daily life. The lower height-to-width ratio of the internal motor makes the height-to-width ratio of the complete product more controllable, thereby making the product smaller and more portable.

[0048] The swing seat 12 is a strip-shaped body arranged horizontally in the left-right direction, and the length of the swing seat 12 in the left-right direction is less than the length of the mounting seat 11 in the left-right direction; the height of the extension seat 5 is configured to at least exceed the lower end of the swing seat 12 and provide a mounting position for the return spring 4; there is a gap between the extension seat 5 and the swing seat 12, and the return spring 4 is horizontally arranged between the end face of the swing seat 12 and the end face of the extension seat 5 in the left-right direction; in this embodiment, the gap between the extension seat 5 and the swing seat 12 is 4.25mm, which accounts for about 12% of the total width, in order to accommodate the return spring 4.

Claims

1. A swing motor, characterized in that: The device includes a main body, a stator coil assembly, and a magnet. The main body includes a mounting base, a swing base, and at least two springs. The two springs are arranged spaced apart on the left and right sides, and their two ends are connected to the swing base and the mounting base, respectively. The mounting base, the swing base, and the springs are all integrally formed. The stator coil assembly is mounted on the mounting base and located between the mounting base and the swing base. The magnet is mounted on the swing base and adjacent to the stator coil assembly. Both ends of the mounting base have upwardly extending extension seats, which are located on the left and right sides of the swing base. A return spring is provided on each of the left and right sides of the swing base, with its two ends respectively located on the swing base and the extension seats. The upper surface of the swing base has a first mounting position, which is configured to mount a swing rod.

2. The oscillating motor according to claim 1, characterized in that: There are two swing seats, and each swing seat has a magnet underneath it, with the two magnets arranged in opposite directions.

3. The oscillating motor according to claim 2, characterized in that: There are two spring pieces. The spring pieces are divided from top to bottom by a dividing groove. The dividing groove is configured to divide the upper and middle parts of the spring pieces from front to back. The lower part of the spring piece is complete and forms a lower connecting part. The lower connecting part is fixedly connected to the mounting base. The upper part of the spring piece is divided into two upper connecting parts. The two upper connecting parts are fixedly connected to two swing seats respectively.

4. The oscillating motor according to claim 3, characterized in that: Both the upper and lower connecting parts are provided with injection holes.

5. The oscillating motor according to claim 3, characterized in that: The middle part of the spring is hollowed out by the dividing groove, and the hollow is elliptical.

6. The oscillating motor according to claim 1, characterized in that: The side end face of the swing seat is provided with a groove, and the end face of the extension seat facing the swing seat is provided with a boss. One end of the return spring is sleeved on the boss, and the other end of the return spring is set in the groove.

7. The oscillating motor according to claim 1, characterized in that: The mounting base is roughly U-shaped, and the swing seat, spring, and stator coil assembly are all located in the mounting base in the left and right directions.

8. The oscillating motor according to claim 1, characterized in that: The mounting base has reinforcing plates on both the front and rear ends, which are configured to fix the stator coil assembly in the front-rear direction.

9. The oscillating motor according to claim 8, characterized in that: The reinforcing plate is fixed to the mounting base with screws.

10. The oscillating motor according to claim 1, characterized in that: The distance between the top surface of the swing seat and the bottom surface of the mounting seat is the motor height, the distance between the left and right end faces of the mounting seat is the motor width, and the ratio of motor height to motor width is no greater than 0.

58.

11. The oscillating motor according to claim 1, characterized in that: The swing seat is a strip-shaped body arranged horizontally in the left-right direction, and the length of the swing seat in the left-right direction is less than the length of the mounting seat in the left-right direction; the height of the extension seat is configured to at least exceed the lower end of the swing seat and provide a position for the return spring; there is a gap between the extension seat and the swing seat, and the return spring is horizontally arranged between the end face of the swing seat and the end face of the extension seat in the left-right direction.

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