CN215548834U

CN215548834U - Adjustable cutter head mechanism and hair clipper

Info

Publication number: CN215548834U
Application number: CN202121236682.8U
Authority: CN
Inventors: 王敏
Original assignee: Time Technology Zhongshan Co ltd
Current assignee: Time Technology Zhongshan Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-18
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses an adjustable cutter head mechanism and a hair clipper, wherein the adjustable cutter head mechanism comprises a static cutter component, a movable cutter component, a sliding part and an elastic pressing part, wherein the movable cutter component is arranged at the top of the static cutter component and can move relative to the static cutter component; the sliding piece is slidably arranged on the static knife assembly; the elastic pressing piece is arranged on the sliding piece, and one end of the elastic pressing piece is connected with the movable cutter component so as to apply preset pressure to the movable cutter component. The adjustable cutter head mechanism provided by the utility model can keep the abutting pressure of the movable cutter and the static cutter basically unchanged when the movable cutter is adjusted.

Description

Adjustable cutter head mechanism and hair clipper

Technical Field

The utility model relates to the technical field of shaving tools, in particular to an adjustable cutter head mechanism and a hair clipper.

Background

Some common hairdressers support through setting up the torsional spring and press the sword, make the movable knife laminating on quiet sword, move sword reciprocating vibration through the drive from this, form the effect of shearing with quiet sword, realize pruning the hair to can reach the effect of control clipping hair speed through adjusting the relative position who moves sword and quiet sword. However, when the movable blade is adjusted, the position where the torsion spring is pressed against the movable blade is also changed, so that the torsion of the torsion spring is changed, the pressure between the movable blade and the static blade is changed, and the trimming effect is affected.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an adjustable cutter head mechanism, which can keep the abutting pressure of a movable cutter and a static cutter basically unchanged when the movable cutter is adjusted.

The utility model also provides a hair clipper with the adjustable cutter head mechanism.

An adjustable bit mechanism according to an embodiment of the first aspect of the utility model comprises: the movable knife assembly is arranged at the top of the static knife assembly, and the movable knife assembly can move relative to the static knife assembly; the sliding piece is slidably arranged on the static knife assembly; the elastic pressing piece is arranged on the sliding piece, and one end of the elastic pressing piece is connected with the movable cutter component so as to apply preset pressure to the movable cutter component.

The adjustable cutter head mechanism provided by the embodiment of the utility model has at least the following beneficial effects: when the movable cutter component is adjusted, the sliding part can be moved by pushing the sliding part, and the elastic abutting part is arranged on the sliding part and is connected with the movable cutter component, so that the sliding part can move to drive the movable cutter component to move synchronously, the relative positions of the movable cutter component and the elastic abutting part are kept unchanged, the abutting force of the movable cutter component and the static cutter component is kept basically unchanged while the movable cutter is adjusted, the abutting force of the movable cutter component and the static cutter component is kept in a better state, and the trimming effect of the hair trimmer is improved.

According to some embodiments of the utility model, the stationary blade assembly comprises a stationary blade body and a stationary blade holder, the stationary blade body is detachably connected with the stationary blade holder, one of the stationary blade holder and the sliding member is provided with a guide rail, and the other is provided with a guide groove, and the guide rail is in sliding fit with the guide groove.

According to some embodiments of the present invention, the stationary blade body is fixed on the top of the stationary blade seat, one of the stationary blade body and the stationary blade seat is provided with a first positioning post, and the other is provided with a first positioning groove, and the first positioning post and the first positioning groove are inserted and fixed.

According to some embodiments of the utility model, the tool rest further comprises a return spring, the stationary tool holder is provided with an accommodating groove, the return spring is arranged in the accommodating groove, one end of the return spring is connected with or abutted against the end wall of the accommodating groove, and the other end of the return spring is connected with or abutted against the sliding piece.

According to some embodiments of the utility model, the sliding member and the end wall of the guide groove are provided with a convex column which is inserted and matched with the return spring.

According to some embodiments of the utility model, the movable blade assembly comprises a movable blade body and a movable blade holder, the movable blade body is detachably connected with the movable blade holder, and the movable blade holder is fixedly connected with the one end of the elastic pressing piece.

According to some embodiments of the present invention, one of the movable blade body and the movable blade holder is provided with a second positioning column, and the other is provided with a second positioning slot, and the second positioning column and the second positioning slot are inserted and fixed.

According to some embodiments of the present invention, the elastic pressing member is a torsion spring, the torsion spring has a torsion ring, a force storage torsion arm and a force application torsion arm, the torsion ring is fixed on the sliding member, the force storage torsion arm is fixed on the sliding member or the stationary blade assembly, and the force application torsion arm is fixed on the movable blade assembly.

According to some embodiments of the utility model, a positioning pin is arranged at the end of the force application torque arm, a third positioning groove is arranged on the movable blade assembly, and the positioning pin is inserted and fixed in the third positioning groove.

According to some embodiments of the utility model, the stationary blade assembly is provided with a stopper capable of preventing the sliding member from sliding out of the stationary blade assembly.

A hair clipper according to an embodiment of the second aspect of the present invention includes the adjustable cutter head mechanism of the above-described embodiment of the first aspect of the present invention.

The hair clipper provided by the embodiment of the utility model has the following beneficial effects: when the movable knife assembly is adjusted, the sliding part can move by pushing the sliding part, and the elastic abutting part is arranged on the sliding part and is connected with the movable knife assembly, so that the sliding part moves to drive the movable knife assembly to move synchronously, the relative position of the movable knife assembly and the elastic abutting part is kept unchanged, the abutting force of the movable knife assembly and the static knife assembly is kept basically unchanged while the movable knife is adjusted, the abutting force of the movable knife assembly and the static knife assembly is kept in a better state, and the trimming effect of the hair trimmer is improved.

According to some embodiments of the utility model, the driving mechanism comprises a motor and an eccentric shaft, an output shaft of the motor is connected with the eccentric shaft and can drive the eccentric shaft to eccentrically rotate, the movable knife assembly is provided with a clamping groove, and the eccentric shaft is arranged along the front-back direction and movably inserted in the clamping groove.

According to some embodiments of the present invention, the push button assembly includes a push button body and a sliding pushing frame, the sliding pushing frame is slidably disposed on the machine body, an end of the sliding pushing frame abuts against the sliding member, and the push button body is fixedly connected to the sliding pushing frame.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an adjustable cutter head mechanism according to an embodiment of the utility model;

FIG. 2 is an exploded schematic view of the adjustable bit mechanism shown in FIG. 1;

FIG. 3 is a schematic view of a static seat of the adjustable bit mechanism shown in FIG. 1;

FIG. 4 is a schematic view of a slide of the adjustable bit mechanism shown in FIG. 1;

FIG. 5 is a schematic view of a resilient biasing member of the adjustable bit mechanism shown in FIG. 1;

FIG. 6 is a schematic view of the internal structure of the hair clipper of the present invention;

FIG. 7 is an exploded view of the hair clipper of the present invention;

reference numerals:

the stationary knife assembly 100, the stationary knife holder 110, the guide groove 111, the receiving groove 112, the first positioning column 113, the limiting block 114, the positioning block 115, the hook 116, the limiting projection 117, the arc-shaped groove 118, the stationary knife body 120, the first positioning groove 121, the return spring 130 and the protruding column 140;

the movable knife component 200, the movable knife seat 210, the second positioning column 211, the movable knife body 220 and the second positioning groove 221;

a slider 300, a guide rail 310, a torsion spring groove 320;

elastic pressing piece 400, power storage torque arm 410, torque ring 420, force application torque arm 430 and positioning pin 440;

the sliding button comprises a motor 510, an eccentric shaft 520, a push button body 610, a sliding push frame 620, a mounting spring piece 630, a shell 700, an accommodating cavity 710 and a sliding hole 720.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 and 2, an adjustable bit mechanism according to an embodiment of the first aspect of the present invention includes: the movable knife assembly 200 is arranged at the top of the static knife assembly 100, and the movable knife assembly 200 can move relative to the static knife assembly 100; the sliding member 300 is slidably disposed on the stationary blade assembly 100; the elastic pressing member 400 is disposed on the slider 300, and one end of the elastic pressing member 400 is connected to the moving blade assembly 200 to apply a predetermined pressure to the moving blade assembly 200.

Specifically, the movable blade assembly 200 movably abuts against the stationary blade assembly 100, and the elastic pressing member 400 has a certain elastic deformation capability, so that in practical applications, the movable blade assembly 200 and the stationary blade assembly 100 can form a shearing action by driving the movable blade assembly 200 to vibrate, so as to trim hair.

When the movable blade assembly 200 is adjusted, the sliding member 300 can be moved by pushing the sliding member 300, and the elastic pressing member 400 is arranged on the sliding member 300 and connected with the movable blade assembly 200, so that the sliding member 300 can move to drive the movable blade assembly 200 to move synchronously, and the relative positions of the movable blade assembly 200 and the elastic pressing member 400 are kept unchanged, so that the pressing force of the movable blade assembly 200 and the stationary blade assembly 100 is kept basically unchanged while the movable blade is adjusted, the pressing force of the movable blade assembly 200 and the stationary blade assembly 100 is kept in a better state, and the clipping effect of the hair clipper is improved.

In some embodiments of the present invention, as shown in fig. 2 and 3, the stationary blade assembly 100 includes a stationary blade body 120 and a stationary blade seat 110, the stationary blade body 120 is detachably connected to the stationary blade seat 110, so as to facilitate the detachment of the stationary blade body 120, the stationary blade body 120 is cleaned, maintained, and maintained, or a new stationary blade body 120 is conveniently replaced, the sliding member 300 has two guide rails 310, the two guide rails 310 are respectively disposed on two sides of the sliding member 300, the guide rails 310 can be formed as an integral structure with the sliding member 300, so as to facilitate the processing, the stationary blade seat 110 has guide grooves 111, the guide grooves 111 correspond to the guide rails 310 one by one, the guide rails 310 are in sliding fit with the guide grooves 111, and by the cooperation of the guide rails 310 and the guide grooves 111, the sliding connection between the sliding member 300 and the stationary blade assembly 100 is achieved, of course, only one guide rail 310 may be disposed, so as to achieve the sliding connection between the sliding member 300 and the stationary blade assembly 100. The guide groove 111 may be a T-shaped groove, a dovetail groove, or the like, so that the sliding member 300 is more stably and reliably engaged with the stationary blade assembly 100. It is contemplated that in some embodiments, the positions of the guide rail 310 and the guide groove 111 may be interchanged, i.e., the guide rail 310 is disposed on the stationary blade body 120 and the guide groove 111 is disposed on the slider 300, and the cooperation of the guide rail 310 and the guide groove 111 may also be achieved.

In some embodiments of the present invention, as shown in fig. 2 and 3, the stationary blade body 120 is fixed on the top of the stationary blade holder 110, the stationary blade holder 110 is provided with a first positioning post 113, the stationary blade body 120 is provided with a first positioning slot 121, the first positioning post 113 and the first positioning slot 121 are inserted and fixed to each other, so as to achieve detachable matching of the stationary blade body 120 and the stationary blade holder 110, matching of the first positioning post 113 and the first positioning slot 121 not only can play a role in positioning the stationary blade body 120 and the stationary blade holder 110 with each other, but also can play a role in fixing through friction between the first positioning post 113 and a slot wall of the first positioning slot 121, and meanwhile, on the basis, the first positioning post 113 can also be provided with a threaded hole for screw matching, so that the stationary blade body 120 and the stationary blade holder 110 can be further connected by screwing. Of course, in some embodiments, the stationary blade body 120 and the stationary blade seat 110 may also be directly fixed by screwing, so as to achieve the detachable connection therebetween. In addition, the positions of the first positioning column 113 and the first positioning groove 121 of the above embodiments can be interchanged, that is, the first positioning column 113 is disposed on the stationary blade body 120, and the first positioning groove 121 is disposed on the stationary blade base 110, so that the first positioning column 113 and the second positioning groove 221 can be matched and positioned with each other.

In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the present invention further includes a return spring 130, the stationary blade holder 110 is provided with a receiving groove 112, the return spring 130 is disposed in the receiving groove 112, one end of the return spring 130 is connected to or abutted against an end wall of the receiving groove 112, and the other end of the return spring 130 is connected to or abutted against the sliding member 300. The return spring 130 is a common compression spring or extension spring, and by providing the return spring 130, the slider 300 is stressed in a single direction, so that the moving blade assembly 200 can be automatically reset in a single direction when adjusted to a zero point.

In some embodiments of the present invention, as shown in fig. 4, the end walls of the sliding member 300 and the guide groove 111 are provided with a convex pillar 140 which is inserted and matched with the return spring 130. Through the arrangement of the convex column 140, the end part of the return spring 130 is sleeved on the convex column 140, so that the return spring 130 is conveniently positioned and fixed, and the phenomenon of deflection when the return spring 130 is assembled is prevented.

In some embodiments of the present invention, as shown in fig. 1 and 2, the movable blade assembly 200 includes a movable blade body 220 and a movable blade holder 210, the movable blade body 220 is detachably connected to the movable blade holder 210, so as to facilitate the detachment of the movable blade body 220, the movable blade body 220 is cleaned, maintained and maintained, or a new movable blade body 220 is conveniently replaced, the movable blade holder 210 is fixedly connected to one end of the elastic pressing member 400, the elastic pressing member 400 transmits the pressing force to the movable blade holder 210, and then the movable blade holder 210 transmits the pressing force to the movable blade body 220, so as to realize the mutual pressing between the movable blade body 220 and the stationary blade body 120, and the elastic pressing member 400 is fixed to the movable blade holder 210, so as to prevent the elastic pressing member 400 from damaging the movable blade body 220, and facilitate the detachment and replacement of the movable blade body 220.

In some embodiments of the present invention, the movable blade holder 210 is provided with a second positioning column 211, the movable blade body 220 is provided with a second positioning slot 221, the second positioning column 211 and the second positioning slot 221 are inserted and fixed to realize the detachable fit of the movable blade body 220 and the movable blade holder 210, the fit of the second positioning column 211 and the second positioning slot 221 can not only perform the function of positioning the movable blade body 220 and the movable blade holder 210 with each other, but also perform the fixing function through the friction force between the second positioning column 211 and the slot wall of the second positioning slot 221, meanwhile, on the basis, the second positioning column 211 can be further provided with a threaded hole for the screw to fit, so that the movable blade body 220 and the movable blade holder 210 can be firmly connected by screwing, further, the movable blade holder 210 is further provided with a buckle, the movable blade body 220 is provided with a clamping slot for the buckle to fit, thereby on the basis of positioning the second positioning column 211 and the second positioning slot 221, the movable blade body 220 and the movable blade holder 210 can be firmly clamped and fixed through the matching of the buckle and the clamping groove. Of course, in some embodiments, the movable blade body 220 and the movable blade holder 210 may also be directly fixed by screwing, so as to achieve the detachable connection therebetween. In addition, the positions of the second positioning column 211 and the second positioning slot 221 in the above embodiments can be interchanged, that is, the second positioning column 211 is disposed on the movable blade body 220, and the second positioning slot 221 is disposed on the movable blade holder 210, so that the second positioning column 211 and the second positioning slot 221 can be matched and positioned with each other.

In some embodiments of the present invention, as shown in fig. 1 and fig. 5, the elastic pressing member 400 is a torsion spring, the torsion spring has a torsion ring 420, a power storage torsion arm 410 and a force application torsion arm 430, the torsion ring 420 is fixed on the sliding member 300, the power storage torsion arm 410 can be fixed on the sliding member 300, or can be fixed on the stationary knife base 110 or the stationary knife body 120, specifically, as shown in fig. 3, a hook 116 can be disposed on the stationary knife base 110, the power storage torsion arm 410 itself has a tendency of bouncing upwards, so that the power storage torsion arm 410 abuts against the top wall of the hook 116, the power storage torsion arm 410 can be fixed, elastic potential energy can be stored for the torsion spring by fixing the power storage torsion arm 410, and the force application torsion arm 430 is fixed on the movable knife assembly 200. The torsion spring can be specifically configured as a double torsion spring, the double torsion spring has two force applying torque arms 430, which are respectively fixed and act on the movable knife holder 210 to balance and disperse the abutting pressure borne by the movable knife holder 210, the two force applying torque arms 430 are also provided, and the two force applying torque arms 430 are connected through a cross rod, so that the force applying torque arms 430 are conveniently fixed.

In addition, in some embodiments, as shown in fig. 4, the sliding member 300 is provided with a torsion spring slot 320 for the torsion coil 420 to extend into, and the torsion coil 420 is clamped in the torsion spring slot 320, so as to further fixedly connect the torsion spring with the sliding member 300.

In some embodiments of the present invention, the end of the force applying torque arm 430 is provided with a positioning pin 440, and the movable blade assembly 200 is provided with a third positioning groove, specifically, the third positioning groove may be provided on the movable blade holder 210, and the positioning pin 440 is inserted and fixed in the third positioning groove, so that the elastic pressing member 400 and the movable blade assembly 200 can be fixed, and the movable blade assembly 200 can be driven to move integrally during the movement of the elastic pressing member along with the sliding member 300.

In some embodiments of the present invention, the fixed blade assembly 100 is provided with a limit block 114, and specifically, the limit block 114 may be disposed on a side of the fixed blade seat 110 away from the fixed blade body 120 to block sliding of the slider 300, so as to prevent the slider 300 from sliding out of the fixed blade seat 110 and being disengaged from the fixed blade assembly 100.

As shown in fig. 6 and 7, the hair clipper according to the second aspect of the present invention includes the adjustable cutter head mechanism according to the first aspect of the present invention.

The slider 300 can be moved by pushing the slider 300, and since the elastic pressing member 400 is disposed on the slider 300 and connected to the moving blade assembly 200, the slider 300 can move to drive the moving blade assembly 200 to move synchronously, so that the relative positions of the moving blade assembly 200 and the elastic pressing member 400 are kept unchanged, and the pressing force between the moving blade assembly 200 and the stationary blade assembly 100 is kept basically unchanged while the moving blade is adjusted, so that the pressing force between the moving blade assembly 200 and the stationary blade assembly 100 is kept in a better state, and the trimming effect of the hair clipper is improved.

In some embodiments of the present invention, as shown in fig. 6, the driving mechanism includes a motor 510 and an eccentric shaft 520, an output shaft of the motor 510 is connected to the eccentric shaft 520 and can drive the eccentric shaft 520 to eccentrically rotate, the movable blade assembly 200 is provided with a clamping groove, the eccentric shaft 520 is arranged along a front-back direction and movably inserted into the clamping groove, wherein the clamping groove is in a strip shape or a notch shape, and after the eccentric shaft 520 movably extends into the clamping groove, because there is no interference in an upper-lower direction thereof, only the movable blade assembly 200 can be driven to move left and right during the eccentric rotation, so that the movable blade assembly 200 and the stationary blade assembly 100 can relatively vibrate to achieve the shearing effect.

In some embodiments of the present invention, the push button assembly includes a push button body 610 and a sliding pushing frame 620, the sliding pushing frame 620 is slidably disposed on the body, an end of the sliding pushing frame 620 abuts against the sliding member 300, and the push button body 610 is fixedly connected to the sliding pushing frame 620. Specifically, the machine body has two mutually buckled shells 700, the shell 700 has a containing cavity 710, the outer side surface of the shell 700 is provided with a sliding hole 720 communicated with the containing cavity 710, the push button body 610 is in sliding fit with the sliding hole 720, so that the push button body 610 can drive the sliding push frame 620 to move, the motor 510 is fixed in the containing cavity 710, the sliding push frame 620 is movably sleeved outside the motor 510, by pushing the push button body 610, the push button body 610 drives the sliding push frame 620 to move, the sliding push frame 620 pushes the sliding part 300 to move, the effect of adjusting the relative position of the movable knife body 220 and the stationary knife body 120 is realized, by matching with the reset spring 130 in some embodiments, the direction movement and the reset of the movable knife body 220 can be realized, and the effect of randomly adjusting the movable knife body 220 is achieved.

Be equipped with installation shell fragment 630 on the frame 620 is pushed up in the slip, the one end of installation shell fragment 630 is the free end, the free end can with the butt of institute's sword subassembly 200, specifically, be provided with spacing lug 117 with installation shell fragment 630 butt on the sword seat 210, be equipped with arc recess 118 on spacing lug 117's the lateral wall, a lateral wall of installation shell fragment 630 is equipped with the arc convex surface, through the unsmooth cooperation of arc convex surface and arc recess 118, and in addition the joint structure that is equipped with between adjustable tool bit mechanism and the fuselage, for example shown in fig. 3, locating piece 115 at the rear side setting of quiet sword seat 110, and the mounting groove that sets up with locating piece 115 matched with on the fuselage, can make the whole firm joint location that obtains of adjustable tool bit mechanism, and because installation shell fragment 630 has the elastic deformation characteristic, can conveniently dismantle or assemble adjustable tool mechanism wholly.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiment has been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the present invention.

Claims

1. An adjustable cutter head mechanism, comprising:

a stationary knife assembly (100);

the movable knife component (200) is arranged at the top of the static knife component (100), and the movable knife component (200) can move relative to the static knife component (100);

the sliding piece (300), the sliding piece (300) is arranged on the static knife component (100) in a sliding way;

the elastic pressing piece (400) is arranged on the sliding piece (300), and one end of the elastic pressing piece (400) is connected with the movable knife assembly (200) to apply preset pressure to the movable knife assembly (200).

2. The adjustable bit mechanism of claim 1,

the static knife assembly (100) comprises a static knife body (120) and a static knife base (110), the static knife body (120) is detachably connected with the static knife base (110), one of the static knife base (110) and the sliding piece (300) is provided with a guide rail (310), the other is provided with a guide groove (111), and the guide rail (310) is in sliding fit with the guide groove (111).

3. The adjustable bit mechanism of claim 2,

still include reset spring (130), be equipped with storage tank (112) on quiet blade holder (110), reset spring (130) are located in storage tank (112), the one end of reset spring (130) is connected or the butt with the end wall of storage tank (112), the other end of reset spring (130) with slider (300) are connected or the butt.

4. The adjustable bit mechanism of claim 1,

the movable knife component (200) comprises a movable knife body (220) and a movable knife seat (210), the movable knife body (220) is detachably connected with the movable knife seat (210), and the movable knife seat (210) is fixedly connected with one end of the elastic pressing piece (400).

5. The adjustable bit mechanism of claim 1,

the elastic pressing piece (400) is a torsion spring, the torsion spring is provided with a torsion ring (420), a force storage torsion arm (410) and a force application torsion arm (430), the torsion ring (420) is fixed on the sliding piece (300), the force storage torsion arm (410) is fixed on the sliding piece (300) or the static knife component (100), and the force application torsion arm (430) is fixed on the moving knife component (200).

6. The adjustable bit mechanism of claim 5,

the tip of application of force torque arm (430) is equipped with location pin (440), move and be equipped with the third constant head tank on sword subassembly (200), location pin (440) are inserted and are established and be fixed in the third constant head tank.

7. A hair clipper, comprising:

an adjustable bit mechanism as claimed in any one of claims 1 to 6.

8. The hair clipper of claim 7,

still include fuselage, actuating mechanism and push away the button subassembly, adjustable tool bit mechanism actuating mechanism with push away the button subassembly and all locate the fuselage, actuating mechanism with move the knife tackle spare (200) and connect and can drive institute knife tackle spare (200) and control reciprocating motion, it can drive to push away the button subassembly move knife tackle spare (200) with slider (300) back-and-forth movement.

9. The hair clipper of claim 8,

the driving mechanism comprises a motor (510) and an eccentric shaft (520), an output shaft of the motor (510) is connected with the eccentric shaft (520) and can drive the eccentric shaft (520) to eccentrically rotate, a clamping groove is formed in the movable blade assembly (200), and the eccentric shaft (520) is arranged in the front-back direction and movably inserted into the clamping groove.

10. The hair clipper of claim 8,

push away the button subassembly including pushing away button body (610) and slip top and push away frame (620), slip top push away frame (620) slide set up in the fuselage, the tip that slides top pushed away frame (620) with slider (300) butt, push away button body (610) with slip top pushes away frame (620) fixed connection.