Tool bit swing assembly and hair clipper

Abstract

The utility model relates to the technical field of hair clippers, in particular to a tool bit swing assembly and a hair clipper, the tool bit swing assembly comprises a floating tool bit and a swing seat connected with the hair clipper, the floating tool bit is connected with the swing seat through a swing mechanism, and the swing mechanism comprises a ball head and a matching hole rotationally matched with the ball head. Any one of the bottom of the floating tool bit and the swinging seat is provided with a matching hole, the other one is provided with a ball head, and a swinging gap is formed between the swinging seat and the floating tool bit on the periphery of the ball head, so that the floating tool bit and the swinging seat can relatively swing in the swinging gap by taking the ball head as a rotating point; the problems that according to an existing floating tool bit swinging mode, the shaving effect is poor, and the user experience is relatively poor are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hair clipper technical field, especially a kind of knife head swing subassembly and hair clipper. BACKGROUND

[0002] Electric hair clipper, commonly used hairdressing tool, its kind is various, for example, the floating razor, the existing application number: "202320543175.1" name: "a floating knife head razor" Chinese patent application, it uses spring as floating structure, when shaving, floating knife head utilizes the elastic expansion of spring and then makes floating knife head relative to body bending and adheres to human face, it has the defect that floating knife head on human skin is easy to be deformed displacement when sliding, leading to the poor adhesion of entire knife head and skin, affect hairdressing and shaving effect, while the reset mode of spring to floating knife head, it is also easy to produce abnormal sound, affect product use experience. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a kind of knife head swing subassembly, solve the problem that the existing floating knife head swing mode has poor shaving effect, and the user experience is relatively poor.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is: a kind of knife head swing subassembly, including floating knife head and the swing seat connected with hair clipper, including floating knife head and swing seat are connected through swing mechanism, swing mechanism includes ball head and the matching hole that is rotationally cooperated with ball head, the bottom of floating knife head and swing seat any setting matching hole, another setting ball head, ball head outer periphery is located between swing seat and floating knife head and is equipped with swing gap, to make floating knife head and swing seat can be relative swing in swing gap with ball head as rotation point.

[0005] Further, the matching hole is arranged on the upper end of the swing seat;The upper end surface of the swing seat and / or the bottom of the floating knife head is provided with an inclined surface, and the inclined surface is used to form the swing gap between the floating knife head and the swing seat.

[0006] By adopting the above technical scheme, the matching hole is arranged on the upper end of the swing seat, so that the hinge point of the floating knife head and the swing seat falls on the axis position of the two, so as to form a swing gap outside the hinge point, as an embodiment of the swing gap, it can be an inclined surface formed on the upper end of the swing seat, and the swing gap is formed between the inclined surface and the floating knife head, so that when the floating knife head rotates in the matching hole through the ball head to swing relative to the swing seat, the floating knife head can vertically swing in the swing gap with the ball head as the swing center, so as to realize the stable swing of the floating knife head;

[0007] As another embodiment of the swing gap, different from the above, the inclined surface can be provided on the floating cutter head, that is, the floating cutter head forms an inclined concave surface around the ball head, thereby forming a swing gap between the floating cutter head and the swing seat, and the above-mentioned effect can also be achieved. Of course, the two embodiments of the swing gap can exist at the same time, that is, the upper end surface of the swing seat forms an inclined surface, and the bottom surface of the floating cutter head also has an inclined surface at the corresponding position, and the swing gap can be formed by using the two inclined surfaces. In summary, by providing an inclined surface on the corresponding part, the rotation condition for the swing of the floating cutter head relative to the swing seat is provided, without the need for additional swing gap, which can optimize the product structure and make the overall product structure more compact and reasonable.

[0008] Further, the diameter of the ball head is within 3-10 mm.

[0009] By adopting the above technical scheme, the diameter setting not only ensures the structural stability of the hinge between the floating cutter head and the swing seat, but also maximizes the reduction of the contact surface of the ball head and the matching hole, thereby reducing the contact friction between the floating cutter head and the swing seat, forming point contact instead of large-area surface contact, reducing the friction loss of the corresponding parts, and improving the service life of the product and the smoothness of the swing of the floating cutter head.

[0010] Further, the angle of the swing gap is within 5-15°.

[0011] By adopting the above technical scheme, the swing angle, that is, the best swing angle between the floating cutter head and the swing sleeve, better fits the human skin, and also avoids the problem that the swing arc of the floating cutter head is too small or too large to affect normal use. The angle setting is more in line with the swing angle of the hair clipper during hair trimming.

[0012] Further, the ball head surface and / or the inner wall of the matching hole are provided with an oil storage groove for reducing the sliding friction between the ball head and the matching hole.

[0013] By adopting the above technical scheme, the setting of the oil storage groove can reduce the contact friction when the ball head slides in the matching hole, thereby making the floating cutter head more smooth when swinging.

[0014] Further, the bottom of the floating cutter head is provided with a swing frame, and the ball head is formed on the bottom surface of the swing frame.

[0015] By adopting the above technical scheme, the setting of the swing frame can transfer the connection stress point between the swing seat and the floating cutter head to the swing frame, thereby improving the structural strength of the floating cutter head. When the ball head is worn out or damaged, a new ball head can be replaced by replacing the swing frame without replacing the entire shell of the floating cutter head, effectively reducing the product maintenance cost.

[0016] Further, the bottom of the floating cutter head is provided with a swing sleeve, the inside of the swing sleeve is provided with a matching cavity, and the upper end of the swing seat is embedded in the matching cavity and can swing.

[0017] By adopting the above technical scheme, the swing sleeve is arranged at the bottom of the floating cutter head, the upper end of the swing seat is limited in the matching cavity by the matching cavity, and after the swing seat and the swing sleeve are preliminarily combined and then the swing sleeve is assembled to the bottom of the floating cutter head, the assembly or separation of the swing seat, the swing sleeve and the floating cutter head can be conveniently completed.

[0018] Further, the swing sleeve and the floating cutter head are detachably connected.

[0019] By adopting the above technical scheme, the swing sleeve and the floating cutter head are detachably connected, so that the assembly or separation of the swing sleeve and the floating cutter head can be facilitated.

[0020] Further, the inner diameter of the matching cavity is sequentially reduced from top to bottom, so that the side wall of the matching cavity forms an arc surface, and the upper end of the swing seat is matched with the shape of the matching cavity.

[0021] By adopting the above technical scheme, the matching cavity is arranged in the shape, so that the matching cavity forms a funnel-shaped structure with a wide upper part and a narrow lower part, and the arc surface of the side wall is used. When the shape of the upper end of the swing seat is matched with the shape of the matching cavity, the swing seat can only swing in the matching cavity along the axis after being connected to the matching cavity by the upper end, and cannot be displaced downward along the axis. Because the upper end of the axis is provided with the matching hole and is limited by the resistance of the ball head, when the swing seat is assembled to the matching hole, the swing seat can only swing relative to the swing sleeve and cannot move axially, thereby ensuring the stability of the floating cutter head during swinging.

[0022] Further, the circumferential surface of the matching cavity is provided with a rotation stopping groove at intervals, the rotation stopping groove is arranged along the height direction, and one end of the circumferential surface of the swing seat is provided with a rotation stopping rib in sliding fit with the rotation stopping groove.

[0023] By adopting the above technical scheme, after the upper end of the swing seat is embedded in the matching cavity, the rotation stopping rib and the rotation stopping groove are in sliding fit, thereby preventing the swing seat from rotating in the matching cavity along the axis, and limiting the movement direction of the swing seat to horizontal swinging.

[0024] Further, the inner wall of the matching cavity is provided with a protruding part or a recessed part at intervals, so as to reduce the sliding contact surface between the swing sleeve and the matching cavity by the protruding part or the recessed part.

[0025] By adopting the above technical scheme, the sliding contact surface between the swing sleeve and the inner wall of the matching cavity can be reduced by the protruding part or the recessed part, thereby effectively reducing the contact friction area, so that the swing sleeve swings in the matching cavity relatively smoothly and easily.

[0026] Further, the elastic reset sleeve is arranged between the floating cutter head and the swing seat, and two ends of the elastic reset sleeve are connected with the floating cutter head and the swing seat respectively, so as to provide elastic reset support for the swing of the floating cutter head.

[0027] By adopting the above technical scheme, the elastic reset sleeve can provide reset support for the swing of the floating cutter head.

[0028] A hair clipper comprises a body, a round cutter head, a transmission assembly, a rotary actuator and the above-mentioned cutter head swing assembly, the round cutter head is arranged on the floating cutter head, the rotary actuator is arranged in the body, and the transmission assembly comprises a transmission shaft, the upper end of the transmission shaft penetrates through the ball head and is connected with the round cutter head in linkage, and the lower end of the transmission shaft is connected with the rotary actuator in linkage.

[0029] Further, the transmission assembly further comprises a gear assembly, and the upper and lower ends of the transmission shaft are connected with the round cutter head and the rotary actuator in linkage through the gear assembly respectively.

[0030] By adopting the above technical scheme, the rotary actuator and the transmission shaft are connected in linkage through the gear assembly, so that the rotational speed and the torque of the transmission shaft can be adjusted by using the gear ratio of different gears.

[0031] Further, the gear assembly comprises a first gear set and a second gear set, the second gear set comprises a central gear and a planetary gear, the planetary gear is arranged to rotate in the floating cutter head, the upper end of the planetary gear is connected with the round cutter head, the side edge of the planetary gear is engaged with the central gear, and the center of the central gear is connected with the transmission shaft.

[0032] Based on the above embodiment, the planetary gear is arranged to facilitate connection of multiple round cutter heads, and the planetary gear is engaged with the central gear, so that the multiple round cutter heads can be driven to move synchronously by the rotation of the central gear

[0033] Further, the transmission shaft comprises an output shaft, an elastic coupling and an input shaft, the output shaft is coaxially connected with the input shaft through the elastic coupling, the output shaft is connected with the central gear, and the input shaft is connected with the rotary actuator through the first gear set.

[0034] By adopting the above technical scheme, the elastic coupling can still maintain power transmission between the input shaft and the output shaft after being bent by a certain angle, so that the round cutter head of the floating cutter head can still maintain power transmission after swinging relative to the body.

[0035] Further, the swing sleeve is internally provided with a cavity, and the elastic coupling is arranged in the cavity.

[0036] By adopting the above technical scheme, the cavity is arranged to accommodate the elastic coupling, so as to improve the integration degree of product parts and make the product more compact.

[0037] Compared with the prior art, the hair clipper has the following advantages:

[0038] 1. In the utility model, through setting the cooperation hole on the swing seat, setting the ball head on the bottom of the floating cutter head, or setting the ball head on the swing seat and setting the cooperation hole on the floating cutter head, then using the ball head cooperation between the ball head and the cooperation hole to form the hinge point, so that the floating cutter head can rotate relative to the swing seat around the hinge point, and the swing gap is formed on the outside of the ball head, which provides the swing space for the swing between the floating cutter head and the swing seat, so that the floating cutter head can swing in the swing gap with the ball head as the swing center, relative to the existing spring floating mode of the floating cutter head, the swing structure stability of the floating cutter head in the horizontal direction can be improved, the floating cutter head can better change the swing angle to fit the human face, especially for the uneven areas of the face, such as the chin and the neck; at the same time, the ball head and the cooperation hole are cooperated, which also reduces the running noise when the traditional spring provides floating support, reduces the discomfort when shaving caused by the abnormal jamming of the spring or uneven stress, and the user's experience when using the product is better.

[0039] 2. In the utility model, the ball head is rotatably cooperated with the cooperation hole, so that the rotating contact area between the whole floating cutter head and the swing seat is smaller, so that they directly form the close point contact rotation instead of large area surface contact sliding, and then the contact area at the rotating position of the floating cutter head and the swing seat is reduced, so that the friction force of the floating cutter head when swinging and the swing noise are smaller, and the durability and use experience of the product are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is a hair cutter structure schematic view of the utility model.

[0041] Figure 2 It is a floating cutter head structure schematic view of the utility model.

[0042] Figure 3 It is a swing frame structure schematic view (A is the bottom surface, and B is the top surface) of the utility model.

[0043] Figure 4 It is a floating cutter head exploded view of the utility model.

[0044] Figure 5 It is a swing sleeve structure schematic view of the utility model.

[0045] Figure 6 It is a floating cutter head three-dimensional exploded view of the utility model.

[0046] Figure 7 It is a hair cutting overall sectional view of the utility model.

[0047] In the drawing:

[0048] 100 body, 110 spring, 120 jack.

[0049] 200 swing seat, 210 bayonet, 220 rotation-stopping rib, 230 mating hole, 240 clamping slot.

[0050] 300 floating cutter head, 310 gear compartment, 320 gear compartment cover, 330 cutter head shell, 331 round cutter head, 332 cover plate, 340 elastic reset sleeve, 341 upper turning edge, 3411 limiting hole, 342 lower turning edge, 350 magnetic attraction piece, 360 swing sleeve, 631 mating cavity, 362 rotation-stopping groove, 363 protruding part, 364 limiting protrusion.

[0051] 410 first gear set, 411 first gear, 412 second gear, 420 second gear set, 421 central gear, 4211 protruding column, 422 planetary gear.

[0052] 500 swing frame, 510 ball head, 511 oil storage groove, 512 shaft hole, 513 positioning column.

[0053] 600 transmission shaft, 610 input shaft, 620 output shaft, 630 elastic coupling, 631 floating connecting head, 632 transmission seat, 633 transmission connecting head, 634 spring.

[0054] 700 motor. DETAILED DESCRIPTION

[0055] The utility model will be described in further detail below in combination with the drawings.

[0056] Reference Figure 1 and 2 The cutter head swing assembly comprises the floating cutter head 300 and the swing seat 200, the floating cutter head 300 can be installed on the body 100 of the hair clipper through the swing seat 200, the floating cutter head 300 and the swing seat 200 are connected through a swing mechanism, the swing mechanism comprises the ball head 510 and the mating hole 230 in rotational cooperation with the ball head 510, the bottom of the floating cutter head 300 is provided with the ball head 510, the upper end of the swing seat 200 is provided with the mating hole 230 in cooperation with the ball head 510, and the two are rotationally connected; a swing gap is formed between the outer periphery of the ball head 510 and the swing seat 200 and the floating cutter head 300, so that the floating cutter head 300 can swing in the swing gap with the ball head 510 as the rotation point. This swing mode can improve the swing structure stability of the floating cutter head 300 in the horizontal direction, so that the floating cutter head 300 can better change the swing angle to fit the human face, and at the same time, since the floating cutter head 300 is swung with the rotation of the protruding head and the mating hole 230 as the swing point, the floating cutter head 300 will not float vertically when fitting the human skin for shaving, and the swing direction is limited to horizontal swing, so that the floating cutter head 300 is relatively more stable and quiet when swinging.

[0057] In this embodiment, the ball head 510 is a hemispherical structure, which is arranged at the center of the bottom of the floating cutter head 300. The corresponding matching hole 230 is a hemispherical hole, which is shaped to match the shape of the ball head 510, so that the ball head 510 can rotate in the matching hole 230.

[0058] In this embodiment, with reference to Figure 2 , the swing seat 200 can be in the shape of a hollow cylindrical structure or other three-dimensional structure. In this embodiment, the swing seat 200 is taken as an example of a cylindrical structure, which has a cavity inside as an embodiment of the swing gap. The swing seat 200 extends from the matching hole 230 to the side direction thereof, and the end face thereof is inclined downward in the vertical direction to form an umbrella-shaped inclined surface at the upper end of the swing seat 200. The matching hole 230 is arranged at the center of the upper end of the swing seat 200. At this time, the bottom of the floating cutter head 300 can be a flat surface. Thus, the swing gap formed between the inclined surface at the upper end of the swing seat 200 and the bottom of the floating cutter head 300 can make the floating cutter head 300 swing around the ball head 510 in the swing gap to make the floating cutter head 300 fit the hair on the human skin. The floating cutter head 300 is relatively stable and quiet when it swings.

[0059] As another embodiment of the swing gap, this embodiment is different from the above-mentioned embodiment in that the upper end of the swing seat 200 is arranged as a flat surface, and the bottom of the floating cutter head 300 is arranged as an umbrella-shaped inclined surface, i.e., the mirror image of the umbrella-shaped inclined surface at the upper end of the swing seat 200 in the above-mentioned embodiment is arranged at the bottom of the floating cutter head 300. Thus, the swing gap formed between the inclined surface at the bottom of the floating cutter head 300 and the flat surface at the upper end of the swing seat 200 can also achieve the above-mentioned effect.

[0060] As a third embodiment of the swing gap, the above-mentioned two embodiments can be combined, i.e., the upper end of the swing seat 200 and the bottom of the floating cutter head 300 are both arranged as inclined surfaces. Thus, the swing gap formed between the two inclined surfaces can also achieve the normal swing effect of the floating cutter head 300 around the ball head 510.

[0061] In this embodiment, the matching hole 230 is arranged at the center of the end face of the swing seat 200. The cross-sectional area of the matching hole 230 is much smaller than the area of the upper end of the swing seat 200. The area of the ball head 510 is relatively smaller than the area of the bottom of the floating cutter head 300. Thus, the ball head 510 and the matching surface have a small rotating contact area, which can reduce the contact friction between the floating cutter head 300 and the swing seat 200 when the floating cutter head 300 swings, so that the floating cutter head 300 has smaller friction resistance when it swings, and the noise generated when it swings is also smaller.

[0062] In this embodiment, the diameter of the ball head 510 is preferably within 3-10 mm. This diameter setting not only ensures the structural stability of the floating cutter head 300 and the swing seat 200 when they are hinged, but also maximizes the reduction of the contact area between the ball head 510 and the matching hole 230, thereby reducing the contact friction between the floating cutter head 300 and the swing seat 200, forming a point contact instead of a large-area surface contact between them, reducing the friction loss and noise of the corresponding parts, and improving the service life of the product and the smoothness of the floating cutter head 300 when it swings.

[0063] It is conceivable that as long as the structural strength of the ball head 510 and the corresponding matching hole 230 is ensured, the diameter of the ball head 510 and the area of the corresponding matching hole 230 are as small as possible, which can reduce wear and make the floating cutter head 300 swing more easily and reduce noise. Due to the different strengths of different materials, the diameter of the ball head 510 may be less than 3 mm or greater than 10 mm under the above-mentioned inspiration, which will not be listed and described in detail here.

[0064] In this embodiment, referring to Figure 2 The angle of the swing gap is preferably within 5-15°. This swing angle, i.e. the optimal swing angle between the floating cutter head 300 and the swing seat 200, allows the floating cutter head 300 to better fit the human skin when it rotates, while also avoiding the problem of affecting normal use due to the too small or too large swing arc of the floating cutter head 300. This angle setting is more in line with the swing angle of the hair clipper when cutting hair. It is conceivable that the swing angle of the swing gap may also be outside the above-mentioned angle numbers based on the inspiration that the ball head 510 forms a corresponding umbrella-shaped swing gap between the end face of the floating cutter head 300 and the swing seat 200. Other setting angles are within the protection scope of this embodiment, and the preferred swing gap angle is preferably 10°. This angle not only meets the angle requirement of the floating cutter head 300 when it swings to fit the human skin, but also ensures the structural stability between the floating cutter head 300 and the swing seat 200.

[0065] Based on the above embodiment, referring to Figure 2 and 3In order to further optimize the maintenance cost of each part of the product and optimize the stress point between the floating tool head 300 and the swing seat 200, a swing frame 500 is arranged at the bottom of the floating tool head 300, which can be screwed at the bottom of the floating tool head 300, and the ball head 510 is arranged at the bottom of the swing frame 500, which can be integrally formed with the swing frame 500. In this way, by using the above structure, the connection stress point between the swing seat 200 and the floating tool head 300 can be transferred to the swing frame 500, thereby improving the structural strength of the floating tool head 300, and when the ball head 510 is worn and smooth, the swing frame 500 can be replaced to replace the new ball head 510 without replacing the entire shell structure of the floating tool head 300, thereby effectively reducing the product maintenance cost.

[0066] Based on the above embodiment, in order to further reduce the contact friction force between the floating tool head 300 and the swing seat 200 when swinging, so that the floating tool head 300 swings more smoothly, an oil storage groove 511 is arranged between the surface of the ball head 510 and the matching hole 230. By storing lubricating oil in the oil storage groove 511, the contact friction force between the ball head 510 and the inner wall of the matching hole 230 can be reduced.

[0067] Specifically, as one embodiment of the oil storage groove 511, referring to Figure 3 and 4 The oil storage groove 511 can be opened on the ball head 510, which is arranged along the latitude of the ball head 510. When the ball head 510 swings in the inner wall of the matching hole 230, the lubricating oil in the oil storage groove 511 can correspondingly reduce the contact friction force between the ball head 510 and the matching hole 230, so that the entire floating tool head 300 swings more smoothly and stably.

[0068] As another embodiment of the oil outlet groove, the oil storage groove 511 can also be a groove opened on the inner wall of the matching hole 230, which can also have the above-mentioned lubricating effect. Of course, the oil storage groove 511 can also be arranged on the surface of the ball head 510 and the inner wall of the matching hole 230.

[0069] In this embodiment, the lubricating oil is preferably a flexible solid lubricating oil such as butter, which has good lubricating effect and strong adhesion, and will not cause lubricating oil leakage due to misalignment between the oil storage groove 511 and the inner wall of the matching hole 230.

[0070] In this embodiment, referring to Figure 4In the above embodiment, in order to facilitate the assembly of the product, the bottom of the floating cutter head 300 is further provided with a swing sleeve 360, the swing sleeve 360 is an annular structure as a whole, the periphery thereof is mounted on the bottom of the floating cutter head 300 through screws, the inside of the swing sleeve 360 is provided with a matching cavity 361, the upper end of the swing base 200 is correspondingly and swingably embedded in the matching cavity 361, so that when the swing sleeve 360 and the floating cutter head 300 are fixed through the screws, the matching hole 230 of the swing sleeve 360 corresponds to the ball head 510 to realize the installation between the swing sleeve 360 and the floating cutter head 300.

[0071] In the embodiment, the swing sleeve 360 is preferably detachably connected with the floating cutter head 300, so as to facilitate the assembly between the swing sleeve 360, the swing base 200 and the floating cutter head 300.

[0072] In the embodiment, the swing sleeve 360 and the gear compartment 310 are fixed through screws, and the screw connection between the swing frame 500 and the floating cutter head 300 can also use the screws, so that the screws on the swing sleeve 360 penetrate the swing frame 500 and are locked on the floating cutter head 300, the installation between the swing base 200, the swing frame 500 and the swing sleeve 360 is completed, and no other redundant assembly parts are involved, which effectively reduces the redundant assembly gap between the parts caused by the traditional swing base 200 through buckles or other fixing modes, and causes the adverse effects of swing abnormal sound and complex product assembly.

[0073] In the embodiment, referring to Figure 3 , the upper end surface of the swing frame 500 is provided with a plurality of positioning columns 513, and the bottom of the floating cutter head 300 is provided with corresponding positioning holes matched with the positioning columns 513, so that the positioning columns 513 are inserted into the positioning holes to conveniently complete the pre-assembly between the two, so as to facilitate the subsequent screw fastening of the two.

[0074] In the embodiment, referring to Figure 2 and 5 , the shape of the matching cavity 361 is similar to a circular truncated cone shape or a funnel shape, the side surface thereof is an arc surface, and the upper end of the swing sleeve 360 is also correspondingly provided with a circular truncated cone shape, so that when the swing sleeve 360 and the swing base 200 are combined, the lower end of the swing base 200 can be first inserted through the matching cavity 361, and then the upper end of the swing base 200 is connected with the matching cavity 361 to form a swing fit, and the matching hole 230 of the swing base 200 is correspondingly matched with the ball head 510 after the swing sleeve 360 and the floating cutter head 300 are installed.

[0075] Further, referring to Figure 5In order to prevent the rocker seat 200 from rotating along its axial direction in the mating cavity 361 and to limit the movement direction of the rocker seat 200 to the horizontal plane, anti-rotation grooves 362 are provided at intervals on the inner wall of the mating cavity 361. Correspondingly, anti-rotation ribs 220 that cooperate with the anti-rotation grooves 362 are provided on the upper circumferential surface of the rocker seat 200. The sliding cooperation between the anti-rotation ribs 220 and the anti-rotation grooves 362 is used to limit the movement range of the rocker seat 200.

[0076] Furthermore, to reduce the friction of the rocker seat 200 during horizontal swinging within the mating cavity 361, and to make the rocker seat 200 swing more smoothly within the rocker sleeve 360, thereby reducing wear and noise, a protrusion 363 or a recess is provided on the inner wall of the mating cavity 361, as shown in the figure. Figure 5 Taking the protrusion 363 as an example, the protrusion 363 is arranged along the height direction of the inner wall of the mating cavity 361. When the swing sleeve 360 ​​is movably embedded in the mating cavity 361, the outer side of the swing sleeve 360 ​​contacts the protrusion 363. In this way, due to the presence of the protrusion 363, the contact surface between the swing sleeve 360 ​​and the mating cavity 361 can be limited on the protrusion 363, thereby reducing the contact surface between the swing seat 200 and the swing sleeve 360, so as to reduce wear and noise.

[0077] In this embodiment, the recessed portion works on the same principle as the protruding portion 363, aiming to reduce the contact friction surface between the rocker seat 200 and the rocker sleeve 360, thereby reducing wear and noise. This will not be described in detail here.

[0078] Based on the above embodiments, referring to Figure 2 and 4 In this embodiment, an elastic reset sleeve 340 can also be provided between the rocker seat 200 and the floating cutter head 300, so as to provide elastic reset support for the floating cutter head 300 after swinging. The elastic reset sleeve 340 can be sleeved on the outside of the rocker sleeve 360, and its upper and lower ends abut against the floating cutter head 300 and the rocker sleeve 360 ​​respectively. The elastic reset sleeve 340 can be an elastic rubber sleeve, a spring 634, a compression spring or other elastic components.

[0079] In this embodiment, refer to Figure 2 , 5 6. The swing base 200 is provided with a slot 240 on the outside, and the lower end of the elastic reset sleeve 340 is formed with a lower flange 342 on the inner side. The lower end of the elastic reset sleeve 340 is engaged with the slot 240 through the lower flange 342. The upper end of the elastic reset sleeve 340 is provided with an upper flange 341, which is correspondingly wrapped and engaged between the swing base 200 and the inner wall of the mounting groove. Thus, the assembly between the elastic reset sleeve 340, the floating cutter head 300 and the swing base 200 is realized.

[0080] In the embodiment, the upper end of the elastic reset sleeve 340 is embedded between the inner wall of the mounting groove and the outside of the swing sleeve 360. One advantage is that the gap between the floating cutter head 300 and the swing sleeve 360 can be sealed, avoiding dust, hair and the like from entering the inside of the floating cutter head 300 through the gap, effectively improving the dustproof and anti-pollution effect of the floating cutter head 300. Another advantage is that the impact force of the swing seat 200 when swinging in the matching cavity 361 can be buffered by the elastic force of the elastic reset sleeve 360 itself, thereby avoiding swing noise and running noise caused by assembly gap when the floating cutter head swings, effectively improving the user experience.

[0081] In the embodiment, referring to Figure 2 , 5 and 6, in order to improve the stability of the installation structure between the elastic reset sleeve 340 and the swing sleeve 360, the swing sleeve 360 is provided with a limiting protrusion 364, and the upper turning edge 341 is provided with a limiting hole 3411 corresponding to the limiting protrusion 364. When the elastic reset sleeve 340 is wrapped around the upper end of the swing sleeve 360, the limiting protrusion 364 on the swing sleeve 360 is correspondingly embedded in the limiting hole 3411, thereby improving the structural stability of the elastic reset sleeve 340 and the swing sleeve 360 after assembly, and avoiding coaxial rotation of the two.

[0082] Based on the above embodiment, referring to Figure 6 and 7 , a hair cutter is provided, which includes a body 100, a round cutter head 331, a transmission assembly and a rotary actuator. The floating cutter head 300 includes a gear compartment 310, a gear compartment cover 320 and a cutter head shell 330. The round cutter head 331 is rotatably arranged in the cutter head shell 330. The rotary actuator is arranged in the body 100. The floating cutter head 300 is detachably mounted on the body 100 through the swing sleeve 360. The transmission assembly includes a transmission shaft 600. The upper end of the transmission shaft 600 penetrates the ball head 510 and is linked with the round cutter head 331. The lower end of the transmission shaft 600 is linked with the rotary actuator.

[0083] In the embodiment, the cutter head shell 330 can be buckled and clamped on the gear compartment cover 320, or the two can be hingedly connected on one side and magnetically attracted on the other side through a magnetic attraction member, thereby realizing the opening of the two by turning over, so as to facilitate the cleaning of the gear compartment cover 320 and the round cutter head 331.

[0084] In the embodiment, the rotary actuator can be a motor, an electric motor 700 or other actuators capable of outputting rotary power.

[0085] In the embodiment, the body 100 is provided with a socket 120 matched with the swing seat 200, the inner wall of the socket 120 is provided with a circlip 110, and the side of the corresponding swing seat is provided with a socket 210. When the swing seat 200 is inserted into the socket 120, the circlip 110 is matched with the socket 210, thereby completing the relative locking between the lower end of the swing seat 200 and the body 100.

[0086] In the embodiment, the hair clipper with multiple round cutter heads 331 is generally provided with multiple round cutter heads 331. Taking three round cutter heads 331 as an example, the three round cutter heads 331 are generally arranged in a triangular shape. Corresponding gear assemblies are arranged between the transmission shaft 600 and the multiple round cutter heads 331 and between the transmission shaft 600 and the motor, so as to realize the power transmission between the motor and the transmission shaft 600 and the power transmission between the transmission shaft 600 and the multiple round cutter heads 331 through the gear assemblies.

[0087] In the embodiment, the transmission shaft 600 includes an input shaft 610, an elastic coupling 630, and an output shaft 620. One end of the input shaft 610 is rotatably connected in the body 100 and is linked with the output shaft 620 of the motor through the gear assembly. The other end of the output shaft 620 is elastically connected with the lower end of the output shaft 620 through the elastic coupling 630. The upper end of the output shaft 620 is correspondingly linked with the multiple round cutter heads 331 through the gear assembly to form power transmission.

[0088] Specifically, the gear assembly includes a second gear set 420 for power transmission between the multiple round cutter heads 331 and the transmission shaft 600 and a first gear set 410 for transmission between the transmission shaft 600 and the motor. The first gear set 410 includes a first gear 411 arranged on the output shaft 620 of the motor. One side of the first gear 411 is engaged with a second gear 412. The second gear 412 is sleeved on the outside of the input shaft 610 to drive the input shaft 610 to rotate. The second gear set 420 is arranged in the gear compartment 310 and is limited in the gear compartment 310 by the gear compartment cover 320. The second gear 412 includes a sun gear 421 and a planetary gear 422 arranged around the sun gear 421. The planetary gear 422 is rotatably connected with the gear compartment 310. The center upper end of the planetary gear 422 is connected with the round cutter head 331 through an elastic joint. The center of the sun gear 421 is connected with the upper end of the output shaft 620. Thus, the operation principle of the entire hair clipper is as follows: the motor is started to drive the first gear 411 to rotate. The first gear 411 engages with the second gear 412 to rotate, so as to drive the input shaft 610 to rotate in the body 100 through the second gear 412. The input shaft 610 is driven to rotate the output shaft 620 through the elastic coupling 630, thereby driving the sun gear 421 to rotate. The sun gear 421 engages with the planetary gear 422 to drive the round cutter head 331 to rotate on the cutter head cover, thereby realizing the trimming of the hair.

[0089] In the embodiment, the planetary gear 422 is rotationally connected to the gear bin 310. When the planetary gear 422 is subjected to force, the force is transferred to the gear bin 310. The planetary gear 422 has better stability and force bearing capacity, and the structural strength is relatively better.

[0090] Based on the above embodiment, the ball head 510 is arranged at the bottom center of the gear bin 310, and the matching hole 230 is arranged at the upper end of the swing seat 200. Of course, the matching hole 230 can also be arranged at the bottom of the floating cutter head 300, and the ball head 510 is arranged at the bottom of the swing seat 200. Preferably, the ball head 510 is arranged at the bottom of the floating cutter head 300, and the matching groove is arranged at the upper center of the swing seat 200. This design has the advantages that in order to pass the output shaft 620 through the ball head 510, the central gear 421 is left above the swing frame 500, and the central gear 421 does not have an assembly relationship with the gear bin cover 320 plate. Therefore, the gear bin cover 320 only plays the role of the cover plate 332 and does not participate in the movement assembly of the gear. This reduces the number of parts participating in the transmission assembly, increases the assembly accuracy, and reduces the noise of the gear bin 310 movement.

[0091] In the embodiment, referring to Figure 7 , the elastic coupling 630 includes a transmission seat 632, a spring 634, a floating connecting head 631, and a transmission connecting head 633. The transmission seat 632 is arranged at the upper end of the input shaft 610. The transmission seat 632 is elastically connected with the floating connecting head 631 through the spring 634. The floating connecting head 631 can swing relative to the transmission seat 632 in the horizontal plane through the spring 634. The transmission connecting head 633 is arranged at the lower end of the output shaft 620, and has a plug hole inside. The floating connecting head 631 can be inserted into the plug hole to be coaxially connected and rotated with the transmission connecting head 633. In this way, the input shaft 610 and the output shaft 620 can still maintain the transmission of power torque after being relatively bent or elastically floated through the elastic coupling 630.

[0092] In the embodiment, the elastic joint between the planetary gear 422 and the circular cutter head 331 is similar in structure to the elastic coupling 630, and is a commonly used elastic joint of the existing hair cutter. Therefore, no detailed description is given here.

[0093] In the embodiment, referring to Figure 6 and 7The center of the center gear 421 is provided with a convex column 4211, the inside of the convex column 4211 is hollow, the upper end of the output shaft 620 is embedded into the convex column 4211 correspondingly to be connected with the center gear 421, so that the center gear 421 is not assembled with the gear compartment cover 320 plate, the gear compartment cover 320 plate only plays a role of the cover plate 332 and does not participate in the movement assembly of the center gear 421, so that the number of parts participating in the transmission assembly is reduced, the assembly precision is increased, and the noise of the gear compartment 310 movement is reduced.

[0094] In the embodiment, the lower end part of the output shaft 620, the elastic coupling 630 and the upper end part of the input shaft 610 are arranged in the hollow inside of the swing seat 200, and the input shaft 610 is connected with the floating connecting head 631 through the transmission connecting head 633, so that when the whole floating tool head 300 swings through the ball head 510, the transmission connecting head 633 swings through the spring 634 on the floating connecting head 631 to bend on the transmission seat 632, so that the elastic swing point of the whole elastic coupling 630 falls on the floating connecting head 631 and the transmission seat 632, so that only one transmission connecting head 633 needs to be arranged at the lower end of the output shaft 620, the sum of the length of the transmission connecting head 633 and the output shaft 620 located in the inside of the swing seat 200 can be arranged very short, so that when the floating tool head 300 swings, the transmission connecting head 633 at the lower end of the output shaft 620 is not easy to touch the inner wall of the hollow of the swing seat 200, so as to ensure that the floating tool head 300 can normally swing, and the diameter of the swing seat 200 does not need to be set too thick, so as to meet the normal swing of the floating tool head 300, and avoid that the size of the swing seat 200 is too large to affect the arrangement of other parts.

[0095] Although the preferred embodiments of the utility model are described in detail above, it should be clearly understood that the utility model can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A blade oscillation assembly comprising a floating blade and a swing seat connected to a hair clipper, characterized in that, The floating cutter head and the swing seat are connected through a swing mechanism, the swing mechanism comprises a ball head and a matching hole matched with the ball head, either the bottom of the floating cutter head or the swing seat is provided with the matching hole, and the other is provided with the ball head, a swing gap is arranged between the outer periphery of the ball head and the swing seat and the floating cutter head, so that the floating cutter head and the swing seat can swing relatively in the swing gap with the ball head as the rotation point.

2. A tool bit oscillation assembly according to claim 1, wherein The matching hole is arranged at the upper end of the swing seat; an inclined surface is arranged on the upper end surface of the swing seat and / or the bottom of the floating cutter head, and the inclined surface is used to form the swing gap between the floating cutter head and the swing seat.

3. A tool bit wobble assembly according to claim 1 wherein, The diameter of the ball head is within 3mm-10mm.

4. A tool bit oscillation assembly according to claim 2, wherein The angle of the swing gap is within 5°-15°.

5. The blade head oscillation assembly of claim 1, wherein, An oil storage groove is arranged on the surface of the ball head and / or the inner wall of the matching hole, so as to reduce the sliding friction between the ball head and the matching hole.

6. A tool bit wobble assembly according to claim 1 wherein, The bottom of the floating cutter head is provided with a swing frame, and the ball head is formed on the bottom surface of the swing frame.

7. The blade head oscillation assembly of claim 1, wherein, The bottom of the floating cutter head is provided with a swing sleeve, an inner matching cavity is arranged in the swing sleeve, and the upper end of the swing seat is correspondingly embedded in the matching cavity and can swing.

8. A tool bit oscillation assembly according to claim 7, wherein The swing sleeve and the floating cutter head are detachably connected.

9. A tool bit wobble assembly according to claim 7 wherein, The inner diameter of the matching cavity is sequentially reduced from top to bottom, so that the side wall of the matching cavity forms an arc surface, and the upper end of the swing seat is matched with the shape of the matching cavity.

10. A tool bit wobble assembly according to claim 7 wherein, A rotation stopping groove is arranged on the circumferential surface of the matching cavity at intervals, the rotation stopping groove is arranged along the height direction, and one end of the circumferential surface of the swing seat is correspondingly provided with a rotation stopping rib in sliding fit with the rotation stopping groove.

11. A tool bit wobble assembly according to claim 7 wherein, A convex part or a concave part is arranged on the inner wall of the matching cavity at intervals, so as to reduce the sliding contact surface between the swing sleeve and the matching cavity.

12. The blade head oscillation assembly of claim 1, wherein, An elastic reset sleeve is further arranged between the floating cutter head and the swing seat, and the two ends of the elastic reset sleeve are connected with the floating cutter head and the swing seat respectively, so as to elastically reset the floating cutter head and the swing seat after swinging.

13. A hair clipper comprising a body, a circular blade head, a transmission assembly, a rotary actuator and a blade head oscillation assembly according to any one of claims 1 to 12, characterized in that The circular cutter head is arranged on the floating cutter head, the rotary actuator is arranged in the fuselage, the transmission assembly comprises a transmission shaft, the upper end of the transmission shaft penetrates through the ball head and is connected with the circular cutter head, and the lower end of the transmission shaft is connected with the rotary actuator.

14. A hair clipper according to claim 13, wherein The transmission assembly further comprises a gear assembly, and the upper and lower ends of the transmission shaft are connected with the circular cutter head and the rotary actuator through the gear assembly respectively.

15. A hair clipper according to claim 14, wherein The gear assembly comprises a first gear set and a second gear set, the second gear set comprises a central gear and a planetary gear, the planetary gear is arranged in rotation in the floating cutter head, the upper end of the planetary gear is connected with the circular cutter head, the side edge of the planetary gear is engaged with the central gear, and the center of the central gear is connected with the transmission shaft.

16. A hair clipper according to claim 15, wherein The transmission shaft comprises an output shaft, an elastic coupling and an input shaft, the output shaft is coaxially connected with the input shaft through the elastic coupling, the output shaft is connected with the central gear, and the input shaft is connected with the rotary actuator through the first gear set.

17. A hair clipper according to claim 16, wherein An inner cavity is arranged in the swing sleeve, and the elastic coupling is correspondingly arranged in the inner cavity.

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