Oscillating motor damping structure and hair clipper

Abstract

This utility model relates to the field of hair trimmer technology, and discloses a vibration damping structure for a swing motor and a hair trimmer. The vibration damping structure for the swing motor includes a motor body, a swing shaft, a drive frame, a fixed blade, and a moving blade. The swing shaft is rotatably mounted on the motor body and has a magnet. The motor body has a coil corresponding to the magnet. A transmission component connects the moving blade and the swing shaft. The transmission component has an elastic deformation part connected to the fixed blade. The drive frame is connected to the fixed blade, and an elastically deformable connector connects the drive frame and the motor body. In use, the coil is energized to generate a magnetic field, and the magnet, under the magnetic force of the magnetic field, drives the swing shaft to swing back and forth. This utility model features a rotatable swing shaft and a linearly vibrating drive frame, transforming the previous single reciprocating linear vibration of the motor into a mixed vibration of the swing shaft's torsion and the drive frame's linear vibration, thereby damping the vibration of the motor body and the external fixed structure, resulting in a better user experience.

Description

Technical Field

[0001] This utility model relates to the field of hair trimmer technology, and more specifically, to a vibration damping structure for a swing motor and a hair trimmer. Background Technology

[0002] Some existing hair trimmers, such as some reciprocating electric shavers, include a fixed head and a moving head. A reciprocating magnetic levitation motor drives the moving head to reciprocate relative to the fixed head, thereby achieving a shaving effect.

[0003] However, some existing reciprocating electric shavers, including those with reciprocating magnetic levitation oscillating motors, have oscillating motors that include a drive frame that reciprocates during operation. The drive frame has a connecting shaft that connects to and moves synchronously with the shaver head. During operation, the drive frame performs a reciprocating linear motion. Because the motion of the drive frame is relatively simple, the oscillating motor only experiences linear vibration in one direction. Energy is concentrated in this direction, which can easily resonate with the fixed structure outside the oscillating motor (such as the housing of a hair trimmer), causing vibration amplification. When the housing of the hair trimmer vibrates significantly, it will produce a large vibration sensation on the hand when holding and using the shaver, resulting in a poor grip and affecting the user experience. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a vibration damping structure for a swing motor, comprising a motor body, a swing shaft, a drive frame, a fixed blade, and a moving blade. The swing shaft is rotatably mounted on the motor body and has a magnet mounted on it. A coil corresponding to the magnet is mounted on the motor body. A transmission component connects the moving blade to the swing shaft, and the transmission component has an elastic deformation part connected to the fixed blade. The drive frame is connected to the fixed blade, and an elastically deformable connector connects the drive frame to the motor body. In use, the coil is energized to generate a magnetic field. The magnet, under the magnetic force of the magnetic field, drives the swing shaft to swing back and forth. The swing shaft drives the transmission component to move left and right back and forth, and the transmission component drives the moving blade to move synchronously. Simultaneously, the elastic force of the transmission component on the elastic deformation part... The moving part drives the fixed tool to move, so as to realize the reciprocating motion of the moving part relative to the fixed tool. The fixed tool drives the drive frame to reciprocate, and the drive frame causes the connecting parts to deform, thereby realizing vibration reduction of the motor body. This utility model is equipped with a rotatable swing shaft and a drive frame that can vibrate linearly. It transforms the single reciprocating linear vibration of the motor into a mixed vibration of the torsion of the swing shaft and the linear vibration of the drive frame, thereby reducing vibration of the motor body and the external fixed structure, resulting in a better user experience. The vibration reduction principle is as follows: by introducing torsional vibration to rotate around the shaft, the total kinetic energy of the motor is distributed into multiple degrees of freedom linear displacement and angular displacement. This energy distribution reduces the amplitude of vibration in a single direction, thereby reducing the vibration energy transmitted to the motor body and the external fixed structure.

[0005] Optionally, the rocking motor shock absorption structure further includes a connecting frame, which is connected between the fixed blade and the drive frame, and the connecting member is a first rocking arm that can be elastically bent.

[0006] Optionally, the fixed blade has an inner cavity, the moving blade is placed inside the inner cavity, and the fixed blade is provided with a blade mesh that cooperates with the moving blade.

[0007] Optionally, the transmission component is provided with a connecting post, and the moving blade is provided with a first connecting groove corresponding to the connecting post, with one end of the connecting post placed in the first connecting groove; the transmission component is provided with a second connecting groove corresponding to the swing shaft, with one end of the swing shaft placed in the second connecting groove, the magnet is provided at the end of the swing shaft away from the second connecting groove, the connecting post is provided with a connecting arm for connecting with the fixed blade, and the elastic deformation part is provided on the connecting arm.

[0008] Optionally, the connecting frame includes a connecting plate and two second swing arms, which are respectively connected to both ends of the connecting plate. The second swing arms are elastically deformable, with one end of the second swing arm connected to the connecting plate and the other end of the second swing arm connected to the end of the fixed blade.

[0009] Optionally, the swing axis has an axis, and two magnets are provided, which are symmetrically distributed about the axis.

[0010] Optionally, the motor body is provided with a mounting shaft, and the swing shaft is provided with a mounting hole that rotatably engages with the mounting shaft.

[0011] Optionally, the motor body is provided with a winding groove for winding the coil.

[0012] Optionally, a first compression spring is abutted between one side of the swing shaft and the motor body, and a second compression spring is abutted between the side of the swing shaft away from the first compression spring and the motor body, wherein the first compression spring and the second compression spring are symmetrically distributed.

[0013] Compared to existing technologies, the vibration damping structure of the swing motor in this invention features a rotatable swing shaft and a linearly vibrating drive frame. This transforms the single reciprocating linear vibration of the motor into a mixed vibration of the swing shaft's torsion and the drive frame's linear vibration, thereby damping the motor body and external fixed structure, resulting in a superior user experience. During use, the vibration force of the fixed blade can be transmitted to the moving blade through the transmission component. At the same or similar frequencies, this increases the cutting amplitude of the moving blade, improving the shaving effect. The two magnets are symmetrically distributed about the axis, ensuring consistent swing amplitude during the reciprocating swing of the swing shaft. This prevents asymmetrical impacts on the motor body, which could accelerate structural damage and ensure operational reliability.

[0014] In addition, this utility model also provides a hair trimmer, including the above-mentioned oscillating motor shock absorption structure. This hair trimmer also has the beneficial effects of the above-mentioned oscillating motor shock absorption structure, which will not be described in detail here. Attached Figure Description

[0015] Figure 1 This is a perspective view of the shock absorption structure of the swing motor of this utility model;

[0016] Figure 2 This is a cross-sectional view of the vibration damping structure of the swing motor of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of section A;

[0018] Figure 4 This is a schematic diagram of the vibration damping structure of the swing motor of this utility model;

[0019] Figure 5 This is an exploded view of the shock absorption structure of the swing motor of this utility model;

[0020] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the motor body, 101 is the mounting shaft, 102 is the winding groove, 2 is the swing shaft, 201 is the mounting hole, 3 is the drive frame, 4 is the magnet, 5 is the connector, 6 is the fixed blade, 601 is the inner cavity, 602 is the blade net, 7 is the moving blade, 71 is the first connecting groove, 8 is the transmission component, 81 is the connecting column, 811 is the connecting arm, 812 is the elastic deformation part, 82 is the second connecting groove, 9 is the connecting frame, 91 is the connecting plate, 92 is the second swing arm, 10 is the first compression spring, 11 is the second compression spring, 12 is the fixed shaft, 13 is the axis, and 14 is the bolt. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0024] See Figures 1-5This utility model provides a vibration damping structure for a swing motor, including a motor body 1, a swing shaft 2, a drive frame 3, a fixed blade 6, and a moving blade 7. The swing shaft 2 is rotatably mounted on the motor body 1, and a magnet 4 is mounted on the swing shaft 2. A coil corresponding to the magnet 4 is mounted on the motor body 1. A transmission component 8 connects the moving blade 7 to the swing shaft 2. The transmission component 8 has an elastic deformation part 812 connected to the fixed blade 6. The drive frame 3 is connected to the fixed blade 6, and an elastically deformable connecting component 5 connects the drive frame 3 to the motor body 1. In use, the coil is energized to generate a magnetic field. The magnet 4 is acted upon by the magnetic force of the magnetic field, causing the swing shaft 2 to swing back and forth. The swing shaft 2 drives the transmission component 8 to move back and forth left and right. The transmission component 8 drives the moving blade 7 to move synchronously. At the same time, the transmission component 8 drives the fixed blade 6 to move under the elastic force of the elastic deformation part 812, so as to realize the relative movement of the moving blade 7. The fixed blade 6 reciprocates left and right, driving the drive frame 3 to reciprocate. The drive frame 3 causes the connecting piece 5 to deform, so that the damping coil of the motor body 1 can generate a changing magnetic field through AC or DC commutation circuit, driving the magnet 4 to swing the swing shaft 2 under the action of the magnetic field. This utility model is equipped with a rotatable swing shaft and a drive frame that can vibrate linearly, transforming the single reciprocating linear vibration of the motor into a mixed vibration of the swing shaft's torsion and the drive frame's linear vibration, thereby damping the motor body and external fixed structure, resulting in a better user experience. The damping principle is as follows: by introducing torsional vibration (rotation around the shaft), the total kinetic energy of the motor is distributed into multiple degrees of freedom (linear displacement and angular displacement). This energy distribution reduces the amplitude of vibration in a single direction, thereby reducing the vibration energy transmitted to the motor body and external fixed structure.

[0025] Specifically, the elastic deformation part 812 is a first sheet or a first column capable of elastic bending; if the elastic deformation part 812 is set as a first column, the diameter of the first column needs to be set to be relatively small so that the column can be elastically bent, and the cross-section of the first column can be circular, rectangular or regular polygonal, etc.; in this embodiment, the elastic deformation part 812 is a first sheet, the first sheet is integrally formed with the transmission component 8, and the first sheet is made of metal or a non-metallic material with high toughness and fatigue resistance; in use, the moving blade 7 and the swing shaft 2 are rigidly connected, that is, the moving blade 7 and the swing shaft 2 have the same stroke, due to the transmission When component 8 reciprocates, it distributes some of the power to the elastic deformation part 812, causing the elastic deformation part 812 to undergo elastic deformation. Therefore, the vibration force transmitted from the transmission component 8 to the fixed blade 6 is weakened, making the stroke of the fixed blade 6 reciprocating less than the stroke of the moving blade 7, thereby enabling the moving blade 7 to reciprocate relative to the fixed blade 6. The connecting component 5 is a second piece or a second column that can undergo elastic bending. If the connecting component 5 is set as a second column, the diameter of the second column needs to be set to be small so that the second column can undergo elastic bending. The cross-section of the second column can be circular, rectangular, or regular polygonal.

[0026] See Figure 1 , Figure 2 and Figure 4 The aforementioned vibration damping structure of the swing motor also includes a connecting frame 9, which is connected between the fixed blade 6 and the drive frame 3. The drive frame 3 is connected to the fixed blade 6 through the connecting frame 9. The connecting frame 9 can absorb part of the vibration energy of the fixed blade 6 to reduce the amplitude of the reciprocating motion of the fixed blade 6. During use, the moving blade 7 can perform reciprocating cutting motion relative to the fixed blade 6. The vibration of the moving blade 7 can be transmitted to the fixed blade 6 through the transmission component 8. The transmission component 8 drives the fixed blade 6 and the moving blade 7 to resonate. In this embodiment of the drive device, when the motor power remains unchanged, the fixed blade 6 and the moving blade 7 vibrate at the same or similar frequency, which can increase the cutting swing amplitude of the moving blade 7, improve the shaving effect, and provide a better user experience. The connecting component 5 is a first swing arm that can be elastically bent. One end of the connecting component 5 is connected to the motor body 1 by a bolt, and the other end of the connecting component 5 is connected to the drive frame 3 by a bolt. In this embodiment, the first swing arm is a second piece of metal. In this embodiment, both the fixed blade 6 and the moving blade 7 can swing relative to the external motor fixing structure (such as the housing of a hair trimmer).

[0027] See Figure 1 and Figure 2 The fixed blade 6 is provided with an inner cavity 601, and the moving blade 7 is placed inside the inner cavity 601. The fixed blade 6 is provided with a blade mesh 602 that cooperates with the moving blade 7. The blade mesh 602 is provided with mesh holes (not shown in the figure) suitable for hair to enter. The function of cutting beard and other hair is achieved by the cooperation of the moving blade 7 and the fixed blade 6.

[0028] See Figure 1 , Figure 2 and Figure 5 The transmission component 8 is provided with a connecting post 81, and the moving blade 7 is provided with a first connecting groove 71 corresponding to the connecting post 81. One end of the connecting post 81 is placed in the first connecting groove 71 so that the connecting post 81 can drive the moving blade 7 to swing. The transmission component 8 is provided with a second connecting groove 82 corresponding to the swing shaft 2. One end of the swing shaft 2 is placed in the second connecting groove 82. The magnet 4 is provided at the end of the swing shaft 2 away from the second connecting groove 82. The connecting post 81 is provided with a connecting arm 811 for connecting with the fixed blade 6. An elastic deformation part 812 is provided on the connecting arm 811. The elastic deformation part 812 is plate-shaped so that the swing shaft 2 can drive the connecting post 81 to swing. The elastic deformation part 812 can undergo elastic deformation so that when the vibration amplitude of the fixed blade 6 is small, the moving blade 7 can swing a larger amplitude. The connecting arm 811 is connected to the fixed blade 6 by bolts 14.

[0029] See Figure 1 and Figure 2The connecting frame 9 includes a connecting plate 91 and two second swing arms 92. The two second swing arms 92 are respectively connected to the two ends of the connecting plate 91. The second swing arms 92 can undergo elastic deformation. One end of the second swing arm 92 is connected to the connecting plate 91, and the other end of the second swing arm 92 is connected to the end of the fixed blade 6. The fixed blade 6 is connected between the two second swing arms 92. The fixed blade 6 and the second swing arms 92 are fixed by a fixed shaft 12. In use, the vibration force of the fixed blade 6 can be transmitted to the moving blade 7 through the transmission component. At the same or similar frequency, the cutting amplitude of the moving blade 7 can be increased, thereby improving the shaving effect.

[0030] See Figure 2 and Figure 3 The swing shaft 2 has an axis 13, and two magnets 4 are provided. The two magnets 4 are symmetrically distributed about the axis 13, so that the swing amplitude of the swing shaft 2 is consistent when it swings back and forth, avoiding asymmetrical impact on the motor body and accelerating structural damage, and ensuring the reliability of operation.

[0031] See Figures 1-4 The motor body 1 is provided with a mounting shaft 101, and the swing shaft 2 is provided with a mounting hole 201 that rotatably engages with the mounting shaft 101. The swing shaft 2 rotates around the mounting shaft 101 and rotates smoothly. The mounting shaft 101 is cylindrical and the mounting hole 201 is circular. The motor body 1 is provided with a winding groove 102 for winding the coil, and the coil is wound securely. A first compression spring 10 abuts against one side of the swing shaft 2 and the motor body 1, and a second compression spring 11 abuts against the side of the swing shaft 2 away from the first compression spring 10 and the motor body 1. The first compression spring 10 and the second compression spring 11 are symmetrically distributed. The elastic force of the first compression spring 10 and the second compression spring 11 assists the swing shaft 2 to swing back when it reaches the limit position. The structural design is reasonable.

[0032] The vibration damping structure of the swing motor in this invention features a rotatable swing shaft and a linearly vibrating drive frame. This transforms the single reciprocating linear vibration of the motor into a mixed vibration of the swing shaft's torsion and the drive frame's linear vibration, thereby damping the motor body and external fixed structure, resulting in a superior user experience. During use, the vibration force of the fixed blade is transmitted to the moving blade through the transmission component. At the same or similar frequencies, this increases the cutting amplitude of the moving blade, improving the shaving effect. The two magnets are symmetrically distributed about the axis, ensuring consistent swing amplitude during the reciprocating swing of the swing shaft. This prevents asymmetrical impacts on the motor body, which could accelerate structural damage and ensure operational reliability.

[0033] In addition, this utility model also provides a hair trimmer, including the above-mentioned oscillating motor shock absorption structure. This hair trimmer also has the beneficial effects of the above-mentioned oscillating motor shock absorption structure, which will not be described in detail here.

[0034] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0035] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0037] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0038] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A vibration damping structure for a swing motor, characterized in that, include: The motor body (1), swing shaft (2), drive frame (3), fixed blade (6), and moving blade (7) are arranged. The swing shaft (2) is rotatably mounted on the motor body (1). A magnet (4) is provided on the swing shaft (2). A coil corresponding to the magnet (4) is provided on the motor body (1). A transmission component (8) is connected between the moving blade (7) and the swing shaft (2). The transmission component (8) is provided with an elastic deformation part (812) connected to the fixed blade (6). The drive frame (3) is connected to the fixed blade (6). An elastically deformable connecting component (5) is connected between the drive frame (3) and the motor body (1). When in use, the coil is energized to generate a magnetic field. The magnet (4) is subjected to the magnetic force of the magnetic field, which drives the swing shaft (2) to swing back and forth. The swing shaft (2) drives the transmission component (8) to move back and forth left and right. The transmission component (8) drives the moving blade (7) to move synchronously. At the same time, the transmission component (8) drives the fixed blade (6) to move under the elastic force of the elastic deformation part (812), so as to realize the moving blade (7) to move back and forth left and right relative to the fixed blade (6). The fixed blade (6) drives the drive frame (3) to move back and forth. The drive frame (3) drives the connecting part (5) to deform, so as to realize the vibration reduction of the motor body (1).

2. The vibration damping structure for the swing motor according to claim 1, characterized in that, It also includes a connecting frame (9), which is connected between the fixed blade (6) and the drive frame (3), and the connecting member (5) is a first swing arm that can be elastically bent.

3. The vibration damping structure for the swing motor according to claim 2, characterized in that, The fixed blade (6) is provided with an inner cavity (601), the moving blade (7) is placed in the inner cavity (601), and the fixed blade (6) is provided with a blade net (602) that cooperates with the moving blade (7).

4. The vibration damping structure of the swing motor according to claim 2, characterized in that, The transmission component (8) is provided with a connecting post (81), and the moving blade (7) is provided with a first connecting groove (71) corresponding to the connecting post (81). One end of the connecting post (81) is placed in the first connecting groove (71). The transmission component (8) is provided with a second connecting groove (82) corresponding to the swing shaft (2). One end of the swing shaft (2) is placed in the second connecting groove (82). The magnet (4) is provided at the end of the swing shaft (2) away from the second connecting groove (82). The connecting post (81) is provided with a connecting arm (811) for connecting with the fixed blade (6). The elastic deformation part (812) is provided on the connecting arm (811).

5. The vibration damping structure for the swing motor according to claim 2, characterized in that, The connecting frame (9) includes a connecting plate (91) and two second swing arms (92). The two second swing arms (92) are respectively connected to the two ends of the connecting plate (91). The second swing arms (92) can undergo elastic deformation. One end of the second swing arm (92) is connected to the connecting plate (91), and the other end of the second swing arm (92) is connected to the end of the fixed blade (6).

6. The vibration damping structure for the swing motor according to claim 1, characterized in that, The swing shaft (2) has an axis (13), and two magnets (4) are provided, which are symmetrically distributed about the axis (13).

7. The vibration damping structure for the swing motor according to claim 1, characterized in that, The motor body (1) is provided with a mounting shaft (101), and the swing shaft (2) is provided with a mounting hole (201) that rotatably engages with the mounting shaft (101).

8. The vibration damping structure for the swing motor according to claim 1, characterized in that, The motor body (1) is provided with a winding groove (102) for winding the coil.

9. The vibration damping structure for the swing motor according to any one of claims 1-8, characterized in that, A first compression spring (10) abuts against one side of the swing shaft (2) and the motor body (1), and a second compression spring (11) abuts against the side of the swing shaft (2) away from the first compression spring (10) and the motor body (1). The first compression spring (10) and the second compression spring (11) are symmetrically distributed.

10. A hair trimmer, characterized in that, Including the vibration damping structure of the swing motor as described in any one of claims 1-9.

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