Cutter head self-adaptive swing structure and hair trimmer

Abstract

The utility model relates to the technical field of hair trimmers, and discloses a tool bit self-adaptive swing structure and a hair trimmer, the tool bit self-adaptive swing structure comprises a swing part and a transmission part, the swing part is rotatably connected to a tool handle main body, the transmission part is movably arranged on the tool handle main body, and the transmission part is in transmission connection with the swing part; an elastic piece is arranged between the transmission piece and the knife handle body, and the knife handle body is provided with an inner cavity capable of containing the elastic piece. During use, the tool bit swings relative to the tool handle body under external force and drives the swing part and the transmission part to move, and the elastic part is used for driving the transmission part to reset. The tool bit self-adaptive swing structure and the hair trimmer are simple in structure and low in production cost; the elastic piece is installed in the inner cavity of the knife handle body, an installation groove for the elastic piece does not need to be formed in the outer surface of the knife handle body, the manufacturing cost is low, the elastic piece is not prone to making contact with outside dirt and water stains, aging and damage are not prone to occurring, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of hair trimmer technology, and more specifically, to a blade head adaptive swing structure and a hair trimmer. Background Technology

[0002] Some existing manual shavers and other hair trimmers have non-rotating blades after being attached to the handle. The blades cannot conform to the contours of the skin, resulting in poor contact with curved areas like the face during shaving. Currently, some shavers on the market with conformal blade movements have the following problems: 1. Their adaptive oscillation structure between the blade and handle, including the elastic component that drives the blade back to its original position, is installed in a groove on the outer surface of the handle. This requires creating the groove and fitting the elastic component, making the structure relatively complex and increasing production costs; 2. During use, dirt and water can easily enter the groove and come into contact with the elastic component, accelerating its aging and damage, affecting its normal operation. Deformation, which in turn affects the swing and reset function of the blade head; 3. In existing products, the elastic components are made of plastic. When the blade head rotates and swings, the plastic elastic components undergo elastic deformation such as bending. The elastic force of the plastic elastic components drives the blade head to fit tightly against the skin during shaving. However, after repeated bending and reset (i.e., after repeated cyclic loads), the fatigue resistance of the plastic itself will be greatly reduced, resulting in insufficient reset elasticity of the blade head after a period of use. The blade head cannot fit the skin well, resulting in a poor user experience. When the plastic elastic components are fatigued and damaged, they may break, causing the blade head to fail to reset properly.

[0003] In addition, some shavers on the market with shaving heads that can make adaptive oscillations have a more complex connection structure between the shaving head and the handle, resulting in higher production costs. The shaving head and handle are also more difficult and time-consuming to disassemble and assemble, making them less convenient to use. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a blade head adaptive oscillation structure suitable for mounting on a hair trimmer. The hair trimmer includes a handle body and a blade head capable of oscillating relative to the handle body. The blade head adaptive oscillation structure includes an oscillating component and a transmission component. The oscillating component is adapted to connect to the blade head and oscillate synchronously with it. The oscillating component is rotatably connected to the handle body. The transmission component is movably mounted on the handle body and is drively connected to the oscillating component. An elastic element is provided between the transmission component and the handle body. The main body has an inner cavity that can accommodate the elastic element. In use, the cutter head swings relative to the main body of the handle under external force. The cutter head drives the swinging element and the transmission element to move. The elastic element is used to drive the transmission element to reset. When the transmission element resets, it drives the swinging element and the cutter head to reset. This utility model has an adaptive swinging structure for the cutter head, which is simple in structure and has low production cost. The elastic element is installed in the inner cavity of the main body of the handle, eliminating the need to open a mounting groove for the elastic element on the outer surface of the main body of the handle. This reduces manufacturing cost, and the elastic element is not easily exposed to external dirt and water stains, making it less prone to aging and damage, and resulting in a long service life.

[0005] Optionally, the transmission component is a first gear rotatably connected to the main body of the tool holder, and the swing component is provided with a second gear that meshes with the first gear; in use, the swing component rotates synchronously with the transmission component through the second gear.

[0006] Optionally, the gear diameter of the transmission component is larger than the gear diameter of the second gear.

[0007] Optionally, the tool holder body is provided with a hinge shaft, the rotation center of the second gear is provided with a first hinge hole corresponding to the hinge shaft, the swing member is provided with a second hinge hole corresponding to the hinge shaft, and the hinge shaft is installed in the first hinge hole and the second hinge hole.

[0008] Optionally, the elastic element is a spring sheet, the elastic element includes a first elastic strip and a second elastic strip, the transmission element is provided with a first protrusion and a second protrusion, one end of the first elastic strip abuts against the first protrusion, and one end of the second elastic strip abuts against the second protrusion.

[0009] Optionally, the main body of the knife handle is provided with a mounting mechanism for mounting the elastic element. The mounting mechanism includes a positioning post and two positioning blocks. The elastic element is provided with a positioning groove that engages with the positioning post. The two positioning blocks abut against the first elastic strip and the second elastic strip, respectively.

[0010] Optionally, the elastic element is made of metal.

[0011] Optionally, the blade head can swing relative to the blade holder body at an angle of 25°-35°.

[0012] Optionally, a disassembly and assembly mechanism is provided between the cutter head and the handle body. The disassembly and assembly mechanism includes a connector detachably connected to the swing member. The cutter head is hinged to the connector. The connector is provided with a locking block. The swing member is provided with a slot that engages with the locking block. The handle body is movably provided with a top block for pushing the connector away from the swing member. When the connector is assembled with the swing member, the locking block engages in the slot. When the connector is disassembled from the swing member, an external force drives the top block to push the connector away, so that the locking block disengages from the slot.

[0013] Optionally, the connector is provided with an abutment block, and when the top block pushes the connector, the top block abuts against the abutment block; the top block is slidably disposed on the handle body, and a push button connected to the top block is slidably disposed on the handle body.

[0014] Compared to existing technologies, the adaptive oscillation structure of the cutter head in this invention is simple in structure and low in production cost. The elastic element is installed inside the inner cavity of the cutter handle body, eliminating the need for a mounting groove on the outer surface of the cutter handle body, thus reducing manufacturing costs. Furthermore, the elastic element is less susceptible to external dirt and water stains, making it less prone to aging and damage, resulting in a longer service life. The diameter of the transmission gear is larger than that of the second gear. When the transmission and second gear rotate simultaneously, the angular displacement of the transmission gear per unit time is less than that of the second gear. This means that while the oscillating element has a large oscillation range, the oscillation angle of the transmission element is relatively smaller than that of the oscillating element, resulting in a smaller elastic deformation caused by the transmission element driving the elastic element. This allows for the use of a smaller elastic element within the inner cavity of the cutter handle body, making the structure more compact. It also slows down the rate of fatigue decay of the elastic element. The elastic element is securely installed and less prone to displacement, improving the stability of the elastic element's function in driving the cutter head reset. The elastic element is made of metal, which has better strength and fatigue resistance than plastic, making it more durable and thus extending the overall service life of the product.

[0015] In addition, this utility model also provides a hair trimmer, including the above-mentioned blade head adaptive swing structure. This hair trimmer also has the beneficial effects of the above-mentioned blade head adaptive swing structure, which will not be described in detail here. Attached Figure Description

[0016] Figure 1 This is a perspective view of the adaptive oscillation structure of the cutter head of this utility model;

[0017] Figure 2 This is a schematic diagram of the adaptive oscillation structure of the cutter head of this utility model;

[0018] Figure 3 This is a schematic diagram of the elastic element of the adaptive swing structure of the cutter head in this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of section C;

[0020] Figure 5 This is a schematic diagram of the transmission component of the adaptive swing structure of the cutter head of this utility model;

[0021] Figure 6 This is a schematic diagram of the connector of the adaptive swing structure of the cutter head of this utility model;

[0022] Figure 7 This is a schematic diagram of the swing component of the adaptive swing structure of the cutter head of this utility model;

[0023] Figure 8 This is a schematic diagram of the top block of the adaptive swing structure of the cutter head of this utility model;

[0024] Figure 9 This is a schematic diagram of the groove edge of the adaptive swing structure of the cutter head of this utility model;

[0025] Figure 10 This is a schematic diagram of the adaptive oscillation structure of the cutter head in its normal state.

[0026] Figure 11 This is a schematic diagram of the adaptive swing structure of the cutter head of this utility model, showing the cutter head swinging to its leftmost extreme position. Figure 1 ;

[0027] Figure 12 This is a schematic diagram of the adaptive swing structure of the cutter head of this utility model, showing the cutter head swinging to its right limit position. Figure 2 ;

[0028] Figure 13 A cross-sectional view of the utility model cutter head adaptive oscillation structure;

[0029] Figure 14 for Figure 13 Enlarged view of section D in the middle;

[0030] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the main body of the tool holder, 11 is the positioning pin, 12 is the positioning block, 13 is the empty groove, 14 is the edge of the groove, 15 is the inner cavity, 101 is the hinge shaft, 2 is the tool head, 3 is the swinging component, 301 is the second gear, 3011 is the first hinge hole, 302 is the second hinge hole, 303 is the slot, 3031 is the second guide slope, 304 is the insertion block, 4 is the transmission component, 41 is the first protrusion, 42 is the second protrusion, 5 is the elastic component, 501 is the positioning groove, 51 is the first elastic strip, 52 is the second elastic strip, 6 is the connecting component, 61 is the locking block, 611 is the first guide slope, 62 is the abutment block, 63 is the connecting cavity, 7 is the top block, 71 is the compression spring, 8 is the push button, A is the angle, and B is the central symmetry axis. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] See Figures 1-12 This utility model provides a blade head adaptive swing structure, suitable for installation on a hair trimmer. The hair trimmer includes a handle body 1 and a blade head 2 that can swing relative to the handle body 1. The blade head adaptive swing structure includes a swinging component 3 and a transmission component 4. The swinging component 3 is adapted to be connected to the blade head 2 and swing synchronously with the blade head 2. The swinging component 3 is rotatably connected to the handle body 1. The transmission component 4 is movably disposed on the handle body 1 and is drively connected to the swinging component 3. An elastic component 5 is provided between the transmission component 4 and the handle body 1. The handle body 1 is provided with a space for accommodating... The inner cavity 15 of the elastic element 5; during use, the cutter head 2 swings relative to the main body 1 of the handle under external force, and the cutter head 2 drives the swinging element 3 and the transmission element 4 to move. The elastic element 5 is used to drive the transmission element 4 to reset. When the transmission element 4 resets, it drives the swinging element 3 and the cutter head 2 to reset. The self-adaptive swinging structure of the cutter head of this utility model has a simple structure and low production cost. The elastic element is installed in the inner cavity of the main body of the handle, and there is no need to open the installation groove of the elastic element on the outer surface of the main body of the handle. The manufacturing cost is low, and the elastic element is not easy to come into contact with external dirt and water stains, and is not easy to age or be damaged, and has a long service life.

[0035] See Figure 2, Figure 3 , Figure 5 and Figure 7 The transmission component 4 is a first gear rotatably connected to the main body 1 of the tool holder. The swing component 3 is provided with a second gear 301 that meshes with the first gear. The second gear 301 and the swing component 3 are integrally formed, resulting in a simple structure and low manufacturing cost. In use, the swing component 3 rotates synchronously with the transmission component 4 through the second gear 301. The diameter of the gear in the transmission component 4 is larger than the diameter of the gear in the second gear 301. When the transmission component 4 and the second gear 301 rotate simultaneously, the angular displacement of the transmission component 4 per unit time is less than the angular displacement of the second gear 301. That is, while the swing component 3 can have a large swing range, the swing angle of the transmission component 4 is relatively small compared to the swing component 3, thereby causing the elastic component 5 to be driven by the transmission component 4. The elastic deformation is small, which makes it easier to use a small elastic element 5 in the inner cavity of the handle body 1, making the structure more compact; it can also slow down the rate of fatigue resistance decay of the elastic element 5; if the elastic element 5 undergoes large elastic deformation multiple times, the rate of fatigue resistance decay will be greatly accelerated; the handle body 1 is provided with a hinge shaft 101, and the rotation center of the second gear 301 is provided with a first hinge hole 3011 corresponding to the hinge shaft 101. The swinging member 3 has a second hinge hole 302 corresponding to the hinge shaft 101. The hinge shaft 101 is installed in the first hinge hole 3011 and the second hinge hole 302, making the hinge between the swinging member 3 and the handle body 1 more stable and the swinging more stable, thus improving the user experience.

[0036] See Figure 3 and Figure 5 The elastic element 5 is a spring sheet, with a simple structure and low manufacturing cost. The elastic element 5 includes a first elastic strip 51 and a second elastic strip 52. The transmission element 4 is provided with a first protrusion 41 and a second protrusion 42. One end of the first elastic strip 51 abuts against the first protrusion 41, and one end of the second elastic strip 52 abuts against the second protrusion 42. During use, when the blade head swings to one side, the first protrusion 41 compresses and causes the first elastic strip 51 to undergo elastic deformation. The elasticity of the first elastic strip 51 drives the blade head to adhere tightly to the skin, resulting in a cleaner shave. Similarly, when the blade head swings to the other side... The second protrusion 41 compresses and causes the second elastic strip 52 to undergo elastic deformation. The elasticity of the second elastic strip 52 drives the blade head to fit tightly against the skin, resulting in a cleaner shave. The handle body 1 is provided with a mounting mechanism for installing the elastic element 5. The mounting mechanism includes a positioning post 11 and two positioning blocks 12. The elastic element 5 is provided with a positioning groove 501 that engages with the positioning post 11. The two positioning blocks 12 abut against the first elastic strip 51 and the second elastic strip 52, respectively. The elastic element 5 is installed firmly and is not prone to displacement, thus improving the stability of the function of the elastic element 5 driving the blade head to reset.

[0037] See Figure 3The elastic component 5 is made of metal, specifically stainless steel, spring steel, copper, or other metals. Metal elastic components have better strength and fatigue resistance than plastic ones, making them more durable and thus extending the overall lifespan of the product.

[0038] See Figures 9-12 The blade head 2 can swing at an angle A of 25°-35° relative to the handle body 1. In this embodiment, the angle A is 30°, which is a moderate swing angle. When shaving hair, the blade head 2 can swing adaptively and fit the face better. The central axis of symmetry B of the handle body 1 coincides with or is close to the angle bisector of angle A, so that the blade head can swing at the same or nearly the same angle in the left and right directions. The handle body 1 is provided with a slot 13 for the swinging member 3 to swing. When the blade head 2 swings to the limit position (the limit position includes the left limit position and the right limit position), the swinging member 3 abuts against the edge 14 of the slot 13 for limitation. Angle A is the angle by which the blade head 2 swings from the left limit position to the right limit position.

[0039] See Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 A disassembly and assembly mechanism is provided between the cutter head 2 and the handle body 1. The disassembly and assembly mechanism includes a connector 6 that is detachably connected to the swing member 3. The cutter head 2 is hinged to the connector 6. The connector 6 is provided with a locking block 61. The swing member 3 is provided with a locking groove 303 that engages with the locking block 61. The handle body 1 is movably provided with a pusher block 7 for pushing the connector 6 away from the swing member 3. When the connector 6 and the swing member 3 are assembled, the locking block 61 is engaged in the locking groove 303. When the connector 6 is disassembled from the swing member 3, an external force drives the pusher block 7 to push the connector 6, so that the locking block 61 disengages from the locking groove 303. 1. Easy and quick to assemble and disassemble, making it more convenient to use; the locking block 61 is provided with a first guide slope 611, and the slot of the locking groove 303 is provided with a second guide slope 3031 corresponding to the first guide slope 611. The first guide slope 611 and the second guide slope 3031 cooperate so that when the top block 7 pushes the connecting member 6, the locking block 61 disengages from the locking groove 303, reducing the difficulty of operation; the swing member 3 is provided with a plug-in block 304, and the connecting member 6 is provided with a connecting cavity 63 that is movably plugged into the plug-in block 304. An opening is opened on the lower side of the connecting cavity 63, and the plug-in block 304 is inserted into the connecting cavity 63 from the opening.

[0040] See Figure 1 , Figure 3 , Figure 4 and Figure 6The connector 6 is provided with an abutment block 62. When the top block 7 pushes the connector 6, the top block 7 abuts against the abutment block 62. The top block 7 is slidably disposed on the tool holder body 1. A push button 8 connected to the top block 7 is slidably disposed on the tool holder body 1. A compression spring 71 for driving the top block 7 to reset is abutted on the top block 7. After the connector 6 is disassembled, the push button 8 is released, and the push button 8 can drive the top block 7 to reset under the elastic force of the compression spring 71, which is convenient to use. The function of disassembling the connector 6 is completed by pushing the push button 8 by hand to drive the top block 7. The operation is more convenient.

[0041] The adaptive oscillating structure of the cutter head in this utility model is simple in structure and low in production cost. The elastic element is installed in the inner cavity of the cutter head body, eliminating the need for a mounting groove on the outer surface of the cutter head body. This reduces manufacturing costs and makes the elastic element less susceptible to external dirt and water stains, thus preventing aging and damage and extending its service life. The diameter of the transmission gear is larger than that of the second gear. When the transmission gear and the second gear rotate simultaneously, the angular displacement of the transmission gear per unit time is less than that of the second gear. This means that while the oscillating element has a large oscillation range, the oscillation angle of the transmission gear is relatively smaller than that of the oscillating element. Consequently, the elastic deformation of the elastic element driven by the transmission gear is smaller, allowing for the use of a smaller elastic element within the inner cavity of the cutter head body, resulting in a more compact structure. Furthermore, it slows down the rate of fatigue decay of the elastic element. The elastic element is securely installed and less prone to displacement, improving the stability of the function of the elastic element driving the cutter head to reset. The elastic element is made of metal, which has better strength and fatigue resistance than plastic, making it more durable and thus extending the overall service life of the product.

[0042] In addition, this utility model also provides a hair trimmer, including the above-mentioned blade head adaptive swing structure. This hair trimmer also has the beneficial effects of the above-mentioned blade head adaptive swing structure, which will not be described in detail here.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 shaving head self-adapting oscillation structure, adapted to be arranged on a hair trimmer, said hair trimmer comprising a handle main body (1) and a shaving head (2) oscillatable relative to said handle main body (1), characterized in that, The adaptive swing structure of the cutting head includes a swing member (3) and a transmission member (4). The swing member (3) is adapted to be connected to the cutting head (2) and swing synchronously with the cutting head (2). The swing member (3) is rotatably connected to the handle body (1). The transmission member (4) is movably disposed on the handle body (1). The transmission member (4) is connected to the swing member (3) in a transmission manner. An elastic member (5) is provided between the transmission member (4) and the handle body (1). The handle body (1) is provided with an inner cavity (15) that can accommodate the elastic member (5). In use, the cutting head (2) swings relative to the handle body (1) under external force. The cutting head (2) drives the swing member (3) and the transmission member (4) to move. The elastic member (5) is used to drive the transmission member (4) to reset. When the transmission member (4) resets, it drives the swing member (3) and the cutting head (2) to reset.

2. The tool bit self-adaptive wobble structure according to claim 1, wherein, The transmission component (4) is a first gear rotatably connected to the main body (1) of the tool holder, and the swing component (3) is provided with a second gear (301) meshing with the first gear; in use, the swing component (3) rotates synchronously with the transmission component (4) through the second gear (301).

3. The adaptive oscillation structure of the cutting head according to claim 2, characterized in that, The gear diameter of the transmission component (4) is greater than the gear diameter of the second gear (301).

4. The tool bit self-adaptive wobble structure according to claim 2, wherein, The main body (1) of the tool holder is provided with a hinge shaft (101), and the rotation center of the second gear (301) is provided with a first hinge hole (3011) corresponding to the hinge shaft (101). The swing member (3) is provided with a second hinge hole (302) corresponding to the hinge shaft (101). The hinge shaft (101) is installed in the first hinge hole (3011) and the second hinge hole (302).

5. The tool bit adaptive wobble structure according to claim 1, wherein, The elastic element (5) is a spring sheet. The elastic element (5) includes a first elastic strip (51) and a second elastic strip (52). The transmission element (4) is provided with a first protrusion (41) and a second protrusion (42). One end of the first elastic strip (51) abuts against the first protrusion (41), and one end of the second elastic strip (52) abuts against the second protrusion (42).

6. The tool bit self-adapting wobble structure according to claim 5, wherein, The handle body (1) is provided with an installation mechanism for installing the elastic element (5). The installation mechanism includes a positioning post (11) and two positioning blocks (12). The elastic element (5) is provided with a positioning groove (501) that engages with the positioning post (11). The two positioning blocks (12) abut against the first elastic strip (51) and the second elastic strip (52) respectively.

7. The tool bit adaptive wobble structure according to claim 1, wherein, The elastic element (5) is made of metal.

8. The tool bit adaptive wobble structure according to claim 1, wherein, The angle (A) at which the blade head (2) can swing relative to the handle body (1) is 25°-35°.

9. The tool head self-adapting swing structure according to any one of claims 1-8, characterized in that, A disassembly and assembly mechanism is provided between the cutting head (2) and the handle body (1). The disassembly and assembly mechanism includes a connector (6) that is detachably connected to the swing member (3). The cutting head (2) is hinged to the connector (6). A locking block (61) is provided on the connector (6). A slot (303) is provided on the swing member (3) that is movably engaged with the locking block (61). A top block (7) is movably provided on the handle body (1) for pushing the connector (6) away from the swing member (3). When the connector (6) is assembled with the swing member (3), the locking block (61) is engaged in the slot (303). When the connector (6) is disassembled from the swing member (3), an external force drives the top block (7) to push the connector (6) so that the locking block (61) is disengaged from the slot (303).

10. The tool bit adaptive wobble structure according to claim 9, wherein, The connector (6) is provided with an abutment block (62). When the top block (7) pushes the connector (6), the top block (7) abuts against the abutment block (62). The top block (7) is slidably disposed on the handle body (1). The handle body (1) is slidably disposed with a push button (8) connected to the top block (7).

11. A hair trimmer characterized by Including the adaptive oscillation structure of the cutter head as described in any one of claims 1-9.

Images