A cutting head resonance structure and a hair trimmer

Abstract

This utility model relates to the field of hair trimmer technology, and discloses a blade head resonance structure and a hair trimmer. The blade head resonance structure includes a first blade head, a second blade head, and a driving device. The second blade head is displaceable relative to the first blade head. The driving device is equipped with a power unit capable of reciprocating motion. A transmission component is connected between the power unit and the second blade head, and the transmission component is connected to the first blade head. In use, the power unit drives the second blade head to reciprocate through the transmission component, and the power unit also drives the first blade head to vibrate through the transmission component, so that the first and second blade heads resonate. This utility model's blade head resonance structure and hair trimmer, with the driving device driving the second blade head to reciprocate through the transmission component, and simultaneously driving the first and second blade heads to resonate, can increase the cutting amplitude of the second blade head while keeping the power of the driving device constant, improving the shaving effect and providing a better user experience.

Description

Technical Field

[0001] This utility model relates to the field of hair trimmer technology, and more specifically, to a blade resonant structure 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, in some existing reciprocating electric shavers, the reciprocating magnetic levitation motor only drives the moving head to reciprocate, while the stationary head is fixed. The oscillation range of the moving head depends on the driving force of the reciprocating magnetic levitation motor. Since reciprocating electric shavers need to be used handheld, their size cannot be designed to be too large, which also limits the size of the reciprocating magnetic levitation motor. This results in a limited driving force of the reciprocating magnetic levitation motor, leading to a small oscillation range of the moving head. A small oscillation range means a smaller shaving area covered by a single swipe, requiring more reciprocations to clean the same area. Specifically, users will feel that shaving time is longer, especially noticeable with thick beards. Insufficient range may also cause the foil to fail to fully lift the beard root, leaving some beard hairs uncut. This results in a rough feel to the skin and the appearance of short stubble. Utility Model Content

[0004] To address at least one of the aforementioned problems, this invention provides a blade head resonance structure, comprising a first blade head, a second blade head, and a driving device. The second blade head is displaceable relative to the first blade head. The driving device is equipped with a power unit capable of reciprocating motion. A transmission component is connected between the power unit and the second blade head, and the transmission component is connected to the first blade head. In use, the power unit drives the second blade head to reciprocate via the transmission component, and the power unit also drives the first blade head to vibrate via the transmission component, causing the first and second blade heads to resonate. This blade head resonance structure allows the driving device to drive the second blade head to reciprocate via the transmission component, while simultaneously driving the first and second blade heads to resonate. With a constant power output from the driving device, it increases the cutting amplitude of the second blade head, improving shaving performance and providing a superior user experience.

[0005] Optionally, the first cutter head has an inner cavity, the second cutter head is placed inside the inner cavity, and the first cutter head is provided with a blade mesh that cooperates with the second cutter head.

[0006] Optionally, a connecting frame is connected between the first cutter head and the driving device. The connecting frame includes a connecting plate and two first swing arms. The two first swing arms are respectively connected to both ends of the connecting plate. The first swing arms can undergo elastic deformation. One end of the first swing arm is connected to the connecting plate, and the other end of the first swing arm is connected to the end of the first cutter head.

[0007] Optionally, during use, the vibration frequency of the first swing arm is the same as or close to the reciprocating frequency of the power unit, so that the vibration frequency of the first cutter head is the same as or close to the reciprocating frequency of the second cutter head, so that the first cutter head and the second cutter head resonate.

[0008] Optionally, the connecting frame is provided with an adjusting block for adjusting the vibration frequency of the first swing arm, the length of the adjusting block corresponding to the vibration frequency of the first swing arm; in use, by installing adjusting blocks of different lengths on the connecting frame, the vibration frequency of the first swing arm can be adjusted accordingly, so that the vibration frequency of the first swing arm is the same as or close to the reciprocating frequency of the power unit.

[0009] Optionally, two adjusting blocks are symmetrically arranged. Each adjusting block includes a first adjusting block and a second adjusting block integrally connected. The first adjusting block abuts against the connecting plate, and the second adjusting block abuts against the first swing arm.

[0010] Optionally, the transmission component is provided with a connecting post, the second cutter head is provided with a first connecting groove corresponding to the connecting post, one end of the connecting post is placed in the first connecting groove, the power unit is a swing post, the transmission component is provided with a second connecting groove corresponding to the power unit, one end of the power unit is placed in the second connecting groove, the connecting post is provided with a connecting arm for connecting with the first cutter head, and the connecting arm is provided with an elastic deformation part.

[0011] Optionally, the driving device includes a reciprocating magnetic levitation motor body, a swing shaft rotatably mounted on the reciprocating magnetic levitation motor body, a power unit located at one end of the swing shaft near the transmission member, a magnet located at one end of the swing shaft away from the transmission member, a coil corresponding to the magnet located on the reciprocating magnetic levitation motor body, and a compression spring abutting between the reciprocating magnetic levitation motor body and the swing shaft.

[0012] Optionally, a second swing arm is provided on the reciprocating magnetic levitation motor body, and a swing frame is connected to the transmission component. One end of the second swing arm is connected to the reciprocating magnetic levitation motor body, and the other end of the second swing arm is connected to the swing frame.

[0013] Compared to existing technologies, the blade resonance structure in this invention allows the drive device to drive the second blade to reciprocate through a transmission component. Simultaneously, the transmission component also drives the first and second blades to resonate. With the drive device power remaining constant, this increases the cutting amplitude of the second blade, improving shaving performance and providing a superior user experience. By using adjustable blocks of different lengths to adjust the vibration frequency of the first arm, the vibration frequency of the first blade is made the same as or close to the reciprocating frequency of the second blade, resulting in a rational structural design. The adjustable blocks are detachably connected to the first arm via bolts, allowing the first arm to be adapted to drive devices with different driving frequencies, thus broadening its applicability.

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

[0015] Figure 1 This is a perspective view of the resonant structure of the cutter head of this utility model;

[0016] Figure 2 This is a cross-sectional view of the resonant structure of the cutter head 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 transmission component of the cutter head resonance structure of this utility model;

[0019] Figure 5 This is an exploded view of the transmission component of the blade resonant structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the connecting frame for the blade resonant structure of this utility model;

[0021] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the first cutter head, 101 is the inner cavity, 102 is the cutter net, 2 is the second cutter head, 21 is the first connecting groove, 3 is the drive device, 301 is the power unit, 31 is the reciprocating magnetic levitation motor body, 311 is the winding groove, 32 is the swing shaft, 321 is the magnet, 33 is the compression spring, 4 is the transmission component, 41 is the connecting column, 411 is the connecting arm, 412 is the elastic deformation part, 42 is the second connecting groove, 5 is the connecting frame, 51 is the connecting plate, 52 is the first swing arm, 53 is the adjusting block, 531 is the first adjusting block, 532 is the second adjusting block, 6 is the second swing arm, 7 is the swing frame, and 8 is the fixed shaft. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] See Figures 1-6 This utility model provides a blade head resonance structure, including a first blade head 1, a second blade head 2, and a driving device 3. The second blade head 2 is displaceable relative to the first blade head 1. The driving device 3 is provided with a power unit 301 capable of reciprocating motion. A transmission member 4 is connected between the power unit 301 and the second blade head 2, and the transmission member 4 is connected to the first blade head 1. In use, the power unit 301 drives the second blade head 2 to reciprocate through the transmission member 4, and the power unit 301 drives the first blade head 1 to vibrate through the transmission member 4, so that the first blade head 1 and the second blade head 2 resonate, thereby increasing the cutting amplitude of the second blade head 2. In this utility model blade head resonance structure, the driving device can drive the second blade head to reciprocate through the transmission member, and at the same time drive the first blade head and the second blade head to resonate through the transmission member. With the power of the driving device remaining unchanged, the cutting amplitude of the second blade head can be increased, improving the shaving effect and providing a better user experience.

[0026] See Figure 1 and Figure 2 The first cutter head 1 has an inner cavity 101, and the second cutter head 2 is placed inside the inner cavity 101. The first cutter head 1 is provided with a blade mesh 102 that cooperates with the second cutter head 2. The blade mesh 102 is provided with mesh holes suitable for hair to enter (not shown in the figure). The function of cutting beards and other hairs is achieved by the cooperation of the second cutter head 2 and the first cutter head 1.

[0027] See Figures 1-3A connecting frame 5 connects the first cutter head 1 to the driving device 3. The connecting frame 5 includes a connecting plate 51 and two first swing arms 52. The two first swing arms 52 are respectively connected to both ends of the connecting plate 51. The first swing arms 52 can undergo elastic deformation to allow them to reciprocate to a certain extent. By using the first swing arms 52, the swing amplitude of the first cutter head 1 is reduced, preventing the swing amplitude of the first cutter head 1 from being too large and affecting its use. One end of the first swing arm 52 is connected to the connecting plate 51, and the other end of the first swing arm 52 is connected to the end of the first cutter head 1. The first cutter head 1 is connected to the two... Between the first swing arms 52, the first blade head 1 and the first swing arms 52 are fixed by a fixed shaft 8. When in use, the vibration frequency of the first swing arms 52 is the same as or close to the reciprocating frequency of the power unit 301, so that the vibration frequency of the first blade head 1 is the same as or close to the reciprocating frequency of the second blade head 2, so that the first blade head 1 and the second blade head 2 resonate, thereby increasing the cutting swing amplitude of the second blade head 2. When in use, the vibration force of the first blade head 1 can be transmitted to the second blade head 2 through the transmission component 4. At the same or similar frequency, the cutting swing amplitude of the second blade head 2 can be increased, thereby improving the shaving effect.

[0028] See Figure 1 , Figure 2 , Figure 3 and Figure 6 The connecting frame 5 is equipped with an adjusting block 53 for adjusting the vibration frequency of the first swing arm 52. The length of the adjusting block 53 corresponds to the vibration frequency of the first swing arm 52. In use, by installing adjusting blocks 53 of different lengths on the connecting frame 5, the vibration frequency of the first swing arm 52 is adjusted accordingly, so that the vibration frequency of the first swing arm 52 is the same as or close to the reciprocating frequency of the power unit 301. By selecting adjusting blocks 53 of different lengths to adjust the vibration frequency of the first swing arm 52, the vibration frequency of the first cutter head 1 is adjusted to be the same as or close to the reciprocating frequency of the second cutter head 2. The design is reasonable; the first swing arm 52 can be adapted to drive devices with different drive frequencies through the adjustment block 53, and the application range is wide; there are two symmetrical adjustment blocks 53, which include a first adjustment block 531 and a second adjustment block 532 connected in one piece. The first adjustment block 531 abuts against the connecting plate 51, and the second adjustment block 532 abuts against the first swing arm 52. The longer the adjustment block 53 is, the lower its own vibration frequency, so that the vibration frequency of the first swing arm 52 is also lower; conversely, the shorter the adjustment block 53 is, the higher the vibration frequency of the first swing arm 52.

[0029] See Figure 1 , Figure 2 , Figure 4 and Figure 5The transmission component 4 is provided with a connecting post 41, and the second cutter head 2 is provided with a first connecting groove 21 corresponding to the connecting post 41. One end of the connecting post 41 is placed in the first connecting groove 21 so that the connecting post 41 can drive the second cutter head 2 to swing. The power unit 301 is a swing post, and the transmission component 4 is provided with a second connecting groove 42 corresponding to the power unit 301. One end of the power unit 301 is placed in the second connecting groove 42. The connecting post 41 is provided with a connecting arm 411 for connecting with the first cutter head 1. The connecting arm 411 is provided with an elastic deformation part 412. The elastic deformation part 412 is plate-shaped so that the power unit 301 can drive the connecting post 41 to swing. The elastic deformation part 412 can undergo elastic deformation so that when the vibration amplitude of the first cutter head 1 is small, the second cutter head 2 can swing a larger amplitude.

[0030] See Figure 1 , Figure 2 and Figure 5 The drive device 3 includes a reciprocating magnetic levitation motor body 31, a swing shaft 32 rotatably mounted on the reciprocating magnetic levitation motor body 31, a power unit 301 mounted on one end of the swing shaft 32 near the transmission member 4, a magnet 321 mounted on the other end of the swing shaft 32 away from the transmission member 4, a coil corresponding to the magnet 321 mounted on the reciprocating magnetic levitation motor body 31, a winding groove 311 for winding the coil mounted on the reciprocating magnetic levitation motor body 31, and a compression spring 33 abutting between the reciprocating magnetic levitation motor body 31 and the swing shaft 32.

[0031] See Figure 1 , Figure 2 and Figure 5 A second swing arm 6 is provided on the reciprocating magnetic levitation motor body 31, and a swing frame 7 is connected to the transmission component 4. One end of the second swing arm 6 is connected to the reciprocating magnetic levitation motor body 31, and the other end of the second swing arm 6 is connected to the swing frame 7. The reciprocating linear vibration of the previous reciprocating magnetic levitation motor is transformed into a mixed vibration of torsion around the swing axis 32 and linear vibration in this embodiment, thereby achieving vibration reduction. The linear vibration includes the vibration of the swing frame 7 and the connecting frame 5.

[0032] The blade head resonance structure of this utility model allows the drive device to drive the second blade head to reciprocate through a transmission component. Simultaneously, the transmission component drives the first and second blade heads to resonate. With the drive device power remaining constant, this increases the cutting amplitude of the second blade head, improving shaving performance and providing a superior user experience. By selecting adjustment blocks of different lengths to adjust the vibration frequency of the first arm, the vibration frequency of the first blade head can be adjusted to be the same as or close to the reciprocating frequency of the second blade head, resulting in a reasonable structural design. The adjustment blocks are detachably connected to the first arm via bolts, allowing the first arm to be adapted to drive devices with different driving frequencies, thus broadening its applicability.

[0033] In addition, this utility model also provides a hair trimmer, including the above-mentioned blade head resonance structure. This hair trimmer also has the beneficial effects of the above-mentioned blade head resonance 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 tool bit resonant structure, characterized by, The device includes a first cutter head (1), a second cutter head (2), and a drive device (3). The second cutter head (2) is displaceable relative to the first cutter head (1). The drive device (3) is provided with a power unit (301) capable of reciprocating motion. A transmission member (4) is connected between the power unit (301) and the second cutter head (2). The transmission member (4) is connected to the first cutter head (1). In use, the power unit (301) drives the second cutter head (2) to reciprocate through the transmission member (4). The power unit (301) drives the first cutter head (1) to vibrate through the transmission member (4) so ​​that the first cutter head (1) and the second cutter head (2) resonate.

2. The insert resonant structure of claim 1, wherein The first cutter head (1) has an inner cavity (101), and the second cutter head (2) is placed in the inner cavity (101). The first cutter head (1) is provided with a blade net (102) that cooperates with the second cutter head (2).

3. The insert resonant structure of claim 1, wherein A connecting frame (5) is connected between the first cutter head (1) and the driving device (3). The connecting frame (5) includes a connecting plate (51) and two first swing arms (52). The two first swing arms (52) are respectively connected to the two ends of the connecting plate (51). The first swing arms (52) can undergo elastic deformation. One end of the first swing arm (52) is connected to the connecting plate (51), and the other end of the first swing arm (52) is connected to the end of the first cutter head (1).

4. The insert resonant structure of claim 3, wherein, When in use, the vibration frequency of the first swing arm (52) is the same as or close to the reciprocating frequency of the power unit (301), so that the vibration frequency of the first cutter head (1) is the same as or close to the reciprocating frequency of the second cutter head (2), so that the first cutter head (1) and the second cutter head (2) resonate.

5. The insert resonant structure of claim 3, wherein, The connecting frame (5) is provided with an adjustment block (53) for adjusting the vibration frequency of the first swing arm (52). The length of the adjustment block (53) corresponds to the vibration frequency of the first swing arm (52). In use, by installing adjustment blocks (53) of different lengths on the connecting frame (5), the vibration frequency of the first swing arm (52) can be adjusted accordingly so that the vibration frequency of the first swing arm (52) is the same as or close to the reciprocating frequency of the power unit (301).

6. The insert resonant structure of claim 5, wherein, Two adjustment blocks (53) are symmetrically arranged. The adjustment blocks (53) include a first adjustment block (531) and a second adjustment block (532) integrally connected. The first adjustment block (531) abuts against the connecting plate (51), and the second adjustment block (532) abuts against the first swing arm (52).

7. The insert resonant structure of claim 1, wherein The transmission component (4) is provided with a connecting post (41), and the second cutter head (2) is provided with a first connecting groove (21) corresponding to the connecting post (41). One end of the connecting post (41) is placed in the first connecting groove (21). The power unit (301) is a swing post. The transmission component (4) is provided with a second connecting groove (42) corresponding to the power unit (301). One end of the power unit (301) is placed in the second connecting groove (42). The connecting post (41) is provided with a connecting arm (411) for connecting with the first cutter head (1). The connecting arm (411) is provided with an elastic deformation part (412).

8. The insert resonant structure according to any one of claims 1-7, wherein, The drive device (3) includes a reciprocating magnetic levitation motor body (31), on which a swing shaft (32) is rotatably mounted. The power unit (301) is located at one end of the swing shaft (32) near the transmission member (4). A magnet (321) is located at one end of the swing shaft (32) away from the transmission member (4). A coil corresponding to the magnet (321) is mounted on the reciprocating magnetic levitation motor body (31). A compression spring (33) abuts between the reciprocating magnetic levitation motor body (31) and the swing shaft (32).

9. The insert resonant structure of claim 8, wherein, The reciprocating magnetic levitation motor body (31) is provided with a second swing arm (6), the transmission component (4) is connected to a swing frame (7), one end of the second swing arm (6) is connected to the reciprocating magnetic levitation motor body (31), and the other end of the second swing arm (6) is connected to the swing frame (7).

10. A hair trimmer characterized by Including the blade resonance structure as described in any one of claims 1-9.

Images