CN220481781U - Tool bit structure and hair trimmer - Google Patents

Abstract

The application discloses tool bit structure and hair trimmer, wherein, the tool bit structure includes: a main body part having a mounting cavity; the static knife is fixed with the main body part and is exposed out of the mounting cavity; the movable knife and the static knife are arranged in a stacked mode along a first direction, the movable knife can reciprocate in a second direction relative to the static knife under the drive of the driving unit so as to realize shearing, and the second direction intersects with the first direction; and the end cover is arranged to cover the end part of the static knife and is fixedly connected with the main body part, and the end cover can be exposed out of the main body part. So set up, can avoid quiet sword to warp.

Description

Tool bit structure and hair trimmer

Technical Field

The application relates to the technical field of hair trimmers, in particular to a cutter head structure and a hair trimmer.

Background

The hair trimmer comprises a cutter and an end cap arranged on the side of the cutter, which end cap simultaneously serves as a decoration and for fixing the cutter. In the related art, the end cap is fixed to the main body structure of the hair trimmer first, and then the cutter is fixed to the end cap. Because the end cover and the main body structure are difficult to avoid a certain degree of machining errors and assembly errors, the relative positions between the end cover and the cutter can change, and even the cutter is deformed.

The foregoing is merely provided to facilitate an understanding of the principles of the present application and is not admitted to be prior art.

Content of the application

The main purpose of this application is to propose a tool bit structure and hair trimmer, aims at solving the technical problem that the quiet sword of cutter warp in traditional hair trimmer.

To achieve the above object, a tool bit structure provided in the present application includes:

a main body part having a mounting cavity;

the static knife is fixed with the main body part and is exposed out of the mounting cavity;

the movable knife and the static knife are arranged in a stacked mode along a first direction, the movable knife can reciprocate in a second direction relative to the static knife under the drive of the driving unit so as to realize shearing, and the second direction intersects with the first direction; the method comprises the steps of,

the end cover is arranged to cover the end part of the static knife and is fixedly connected with the main body part, and the end cover can be exposed out of the main body part.

Optionally, the main body part comprises a housing and a tool rest which are arranged in a split way, and the mounting cavity is formed in the housing;

the knife rest is fixed on the outer side of the shell, and the static knife is fixedly connected with the knife rest.

Optionally, the tool rest includes a bottom plate and a first side plate, the bottom plate is fixed with the housing, the first side plate is connected with the edge of the bottom plate, and the first side plate protrudes from one side of the bottom plate, which is far away from the housing; the static knife is fixed with the first side plate, and the movable knife is positioned between the static knife and the bottom plate.

Optionally, the tool rest comprises two first side plates, wherein the two first side plates are distributed on two opposite sides of the bottom plate and correspondingly support and fix the two opposite sides of the static tool;

the knife rest further comprises a plurality of second side plates connected with the bottom plate, the first side plates and the second side plates are distributed along the circumference of the bottom plate, the first side plates, the second side plates and the bottom plate are jointly enclosed to form a containing cavity, an opening of the containing cavity is away from the shell, and the movable knife is arranged in the containing cavity.

Optionally, a reinforcing column is arranged on the side of the tool rest facing the shell, and the reinforcing column and the shell are fixed through a fastener.

Optionally, a sinking groove is formed in the outer side face of the shell, the reinforcing column is inserted into the sinking groove, and the fastening piece penetrates through the bottom wall of the sinking groove.

Optionally, one of the main body part and the static knife is provided with a plug-in protruding block, and the other is provided with a jack, and the plug-in protruding block is plugged with the jack; and/or the number of the groups of groups,

the main body part and the static knife are welded.

Optionally, the first side plate of the main body part comprises a plate body and the plugging convex blocks which are connected with each other, and the plate body is connected with the bottom plate of the main body part;

the static knife is provided with the jack, the through direction of the jack is parallel to the first direction, and the static knife is also abutted to one side, deviating from the bottom plate, of the plate body.

Optionally, two ends of the static knife are respectively provided with one end cover, one side of the end cover facing the static knife is provided with a containing groove, and the inserting protruding block and the end part of the static knife are positioned in the containing groove.

Optionally, the receiving groove has a first notch facing the stationary blade, the receiving groove further has a second notch facing the housing, and the insertion projection and the end of the stationary blade are slidable into the receiving groove from the second notch.

Optionally, the main body part includes casing and mount that the components of a whole that can function independently set up, form in the casing the installation cavity, the end cover with the mount is fixed.

Optionally, the fixing frame is located in the installation cavity, the end cover is fixed with the fixing frame through a fastener, and the shell is provided with a yielding hole for the fastener to penetrate.

Optionally, a positioning boss is arranged on the outer surface of the shell, and the abdication hole penetrates through the positioning boss; the end cover is provided with a positioning groove, and the positioning groove is spliced with the positioning boss in an adaptive manner.

Optionally, the fixing frame is plate-shaped, and the fixing frame and the tool rest of the main body part are distributed along the first direction; the fixing frame is provided with an avoidance hole for the driving shaft of the driving unit to penetrate, and the driving shaft is connected with the movable knife.

Optionally, an installation groove is formed in the outer side face of the shell, at least one part of the end cover is embedded into the installation groove, and the yielding hole penetrates through the groove wall of the installation groove.

Optionally, the cutter head structure includes two end covers, two end covers distribute the both sides of quiet sword, two the end covers respectively with same mount is fixed.

Optionally, the shell of the main body part comprises a first shell and a second shell which are distributed along the first direction and are separately arranged, and the tool rest and the fixing frame of the main body part are respectively fixed with the second shell and are distributed on the inner side and the outer side of the second shell; the driving unit is arranged in the first shell; and/or the number of the groups of groups,

the cutter head structure comprises two end covers, and the two end covers are distributed at two opposite ends of the static cutter.

Embodiments of the present application also provide a hair trimmer comprising:

a cutter head structure; the method comprises the steps of,

the driving unit is in driving connection with the movable knife so as to drive the movable knife to reciprocate along the second direction.

In this application embodiment, quiet sword and end cover non-fixed connection, but fix quiet sword and end cover respectively on main part, therefore the assembly of quiet sword does not receive the influence of machining precision and the assembly precision of end cover itself, can not extrude quiet sword because of the position deviation after the end cover installation is fixed and lead to quiet sword deformation. Meanwhile, the installation position of the static knife is only influenced by the main body part, and influence factors are few, so that the assembly precision of the static knife is relatively high, the relative positions of the static knife and the movable knife can be better ensured, and better shearing is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a related art tool bit configuration;

FIG. 2 is a schematic structural view of a cutter head structure according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of the bit configuration of FIG. 2;

FIG. 4 is an exploded view of the bit configuration of FIG. 2;

FIG. 5 is a schematic view of the tool post of FIG. 4;

FIG. 6 is a schematic plan view of the tool post of FIG. 5;

FIG. 7 is a schematic view of another angle of the tool post of FIG. 4;

FIG. 8 is a schematic structural view of the enclosure of FIG. 4, wherein only a second shell of the enclosure is shown;

FIG. 9 is a schematic view of the stationary knife of FIG. 4;

FIG. 10 is a schematic view of the end cap of FIG. 4;

FIG. 11 is a schematic view of a portion of the tool tip arrangement of FIG. 2;

FIG. 12 is a schematic view of the tool tip arrangement of FIG. 2 from below;

FIG. 13 is a schematic view of the housing of FIG. 4 at another angle;

fig. 14 is a schematic structural view of the fixing frame in fig. 4.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name	Reference numerals	Name of the name
						100	Tool bit structure	1211	Mounting hole	222	Positioning hole
10/10a	Main body part	122	First side plate	30	Movable knife
						11	Outer casing	1221	Board body	40/40a	End cap
111	Mounting cavity	1222	Plug-in protruding block	41	Containing groove
						112	Plane surface	123	Second side plate	42	Limiting part
113	Sink groove	124	Reinforcing column	43	First notch
						114	Yielding hole	13	Fixing frame	44	Second notch
115	Positioning boss	131	Avoidance hole	45	Positioning groove
						116	Mounting groove	20/20a	Static knife	51/52	Fastening piece
117	Second shell	21	Body	60	Adapter piece
						12	Knife rest	22	Mounting boss
121	Bottom plate	221	Jack (Jack)

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that, in the description of the present application, if the terms "first," "second," and the like are used merely for convenience in describing different components or names, they should not be construed as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" is present throughout, it is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme where a and B meet at the same time.

As shown in fig. 1, in the related art, the cap 40a is fixed to the main body 10a of the hair trimmer, and then the stationary blade 20a is fixed to the cap 40a, specifically, through an adapter 60. Since it is difficult to avoid a certain degree of machining errors and assembly errors between the end cap 40a and the body 10a, the above errors may cause a change in the relative position between the end cap 40a and the stationary blade 20a after the end cap 40a is fixed to the body 10a, it is difficult to accurately fix the stationary blade 20a to the end cap 40a, or the stationary blade 20a is deformed due to a large error.

With reference to fig. 2 to 4, a cutter head structure 100 is provided in an embodiment of the present application, and the cutter head structure 100 can be applied to a hair trimmer for trimming hair.

In this embodiment, the tool bit structure 100 includes: the main body 10, the stationary blade 20, the movable blade 30, the end cover 40, and the like are structured, the main body 10 has a mounting cavity 111, and the mounting cavity 111 is used for accommodating a driving unit (not shown in the figure); the static knife 20 is fixed with the main body part 10 and is exposed outside the mounting cavity 111; the movable knife 30 and the static knife 20 are arranged in a stacked manner along a first direction, the movable knife 30 can reciprocate relative to the static knife 20 in a second direction under the drive of the driving unit so as to realize shearing, and the second direction intersects with the first direction; the end cover 40 is located at the end of the stationary blade 20 and covers the end of the stationary blade 20, the end cover 40 is fixedly connected with the main body 10, and the end cover 40 can be exposed outside the main body 10.

In this embodiment, the static knife 20 is not fixedly connected with the end cover 40, but the static knife 20 and the end cover 40 are respectively fixed on the main body 10, so that the assembly of the static knife 20 is not affected by the machining precision and the assembly precision of the end cover 40, and the static knife 20 is not deformed due to the extrusion of the static knife 20 caused by the position deviation after the end cover 40 is installed and fixed. Meanwhile, the installation position of the static knife 20 is only affected by the main body part 10, and the influence factors are few, so that the assembly precision of the static knife 20 is relatively high, the relative positions of the static knife 20 and the movable knife 30 can be better ensured, and better shearing is realized.

The main body 10 is a main body of the tool bit structure 100, and a driving unit is disposed therein, and the driving unit may be a motor, a cylinder, or the like, which can generate power, for example, a linear motor.

The stationary blade 20 is fixed to the main body 10 as a stationary blade; the movable blade 30 is configured to reciprocate in the second direction with respect to the main body 10 and the stationary blade 20, and to generate a shearing force together with the stationary blade 20, thereby shearing hair. For example, a plurality of blades are provided on both the movable blade 30 and the stationary blade 20, and when the movable blade 30 reciprocates in the second direction with respect to the stationary blade 20, the blades on the movable blade 30 produce a scissor-like effect together with the blades on the stationary blade 20.

The stationary blade 20 is exposed outside the mounting cavity 111 and includes: the stationary blade 20 is disposed entirely outside the mounting cavity 111, or the side of the stationary blade 20 facing away from the movable blade 30 is exposed outside the mounting cavity 111.

The end cap 40 is exposed outside the main body 10 and serves as an exterior member for decoration. Meanwhile, the end cover 40 is arranged at the end of the static knife 20 and also plays a role in shielding the end of the static knife 20.

The intersection of the first direction and the second direction means that the first direction and the second direction are in a non-parallel state, and an included angle is formed between the first direction and the second direction and is larger than 0. In some embodiments, the first direction and the second direction are perpendicular or approximately perpendicular. Optionally, the first direction is a bottom-up direction.

In some embodiments, the body portion 10 includes a housing 11 and a tool holder 12 that are separately provided, with a mounting cavity 111 formed in the housing 11; the knife rest 12 is fixed on the outer side of the shell 11, and the static knife 20 is fixedly connected with the knife rest 12. In this embodiment, the main body 10 includes two separate pieces of the housing 11 and the blade holder 12, and the housing 11 and the blade holder 12 are separately machined, thereby facilitating the simplification of the machining. The housing 11 mainly serves to house the internal components and serves as an external appearance, and the holder 12 supports and fixes the stationary blade 20.

In other embodiments, the housing 11 and the tool holder 12 may be integrally formed, such as both being metal pieces, and integrally formed, such as integrally drawn and stamped. Alternatively, the housing 11 is a metal member, the blade holder 12 is a plastic member, and is integrally injection-molded on the housing 11.

Referring to fig. 5 in combination, in some embodiments, the tool holder 12 includes a bottom plate 121 and a first side plate 122, the bottom plate 121 is fixed to the housing 11, the first side plate 122 is connected to an edge of the bottom plate 121, and the first side plate 122 protrudes from a side of the bottom plate 121 facing away from the housing 11; the stationary blade 20 is fixed to the first side plate 122, and the movable blade 30 is located between the stationary blade 20 and the bottom plate 121. Thus, a gap can be formed between the static knife 20 and the bottom plate 121, the gap can accommodate the movable knife 30, the movable knife 30 can be limited by the first side plate 122 and the bottom plate 121 to a certain extent, and the first side plate 122 can shield the movable knife 30, so that the exposed area of the movable knife 30 is reduced, and the risk of collision of the movable knife 30 is reduced.

In some embodiments, the tool holder 12 includes two first side plates 122, and the two first side plates 122 are disposed on opposite sides of the bottom plate 121 and correspondingly support opposite sides of the stationary blade 20, so that the stationary blade 20 is stressed and balanced.

Further, the tool holder 12 further includes a plurality of second side plates 123 connected to the bottom plate 121, the first side plates 122 and the second side plates 123 are distributed along the circumferential direction of the bottom plate 121, the first side plates 122, the second side plates 123 and the bottom plate 121 jointly enclose to form a containing cavity (not labeled), an opening of the containing cavity faces away from the housing 11, and the movable blade 30 is disposed in the containing cavity. In this way, the first side plate 122 and the second side plate 123 jointly play a role in shielding, and enclose the movable knife 30, so that the movable knife 30 is prevented from being exposed, and the risk that the movable knife 30 is damaged by collision is avoided.

Optionally, each edge of the bottom plate 121, which is distributed in the circumferential direction, is provided with a first side plate 122 or a second side plate 123. The bottom plate 121 may have a square shape, for example, a rectangle shape, and the length direction of the bottom plate 121 is along the second direction. Two short sides of the bottom plate 121 are respectively provided with a first side plate 122, and two long sides of the bottom plate 121 are respectively provided with a second side plate 123. The first side plate 122 and the second side plate 123 may be in contact with each other, or a small gap may be provided between the first side plate 122 and the second side plate 123.

In some embodiments, the stationary blade 20 and the movable blade 30 extend along the second direction to form an elongated shape, so the two first side plates 122 support and fix two ends of the stationary blade 20 along the length direction, so that the stationary blade 20 is stressed stably. Furthermore, the length directions of the stationary knife 20, the movable knife 30 and the bottom plate 121 are all along the second direction, so that the three are more compact and have smaller volume.

Referring to fig. 8 in combination, optionally, the outer side of the housing 11 has a plane 112, the bottom plate 121 is disposed facing the plane 112, and the bottom plate 121 is adhered to the plane 112, or a small gap is formed between the bottom plate 121 and the plane 112.

The tool holder 12 is not limited to the shape of the embodiments described above, the tool holder 12 may be a circular ring or a square frame structure, or the tool holder 12 may include a plurality of side plates disposed at intervals.

Referring to fig. 6-8 in combination, in some embodiments, the tool holder 12 and the housing 11 are secured by fasteners 51, which fasteners 51 may be screws, pins, rivets, or the like. Of course, the tool post 12 and the housing 11 may be welded, fastened, or adhesively fastened.

Further, a reinforcing post 124 is provided on the side of the holder 12 facing the housing 11, the reinforcing post 124 being secured to the housing 11 by a fastener 51. Specifically, the bottom plate 121 is provided with reinforcing posts 124. When the tool holder 12 is a sheet metal member, the tool holder 12 is formed by press forming, and thus the first side plate 122, the second side plate 123, and the bottom plate 121 are integrally formed. If the bottom plate 121 is provided too thick, it is costly on the one hand and causes an excessive overall volume on the other hand. Therefore, the thickness of the bottom plate 121 is set to be thin, and when a through hole for fixing the fastener 51 is directly opened on the bottom plate 121, the axial dimension of the through hole is short, so that the contact area between the fastener 51 and the bottom plate 121 is small, and the fixing stability of both is poor. Therefore, after the reinforcing column 124 is disposed on the bottom plate 121, the reinforcing column 124 is provided with a through hole for fixing the fastening member 51, which is equivalent to extending the axial length of the through hole, increasing the contact area between the fastening member 51 and the wall of the through hole, and improving the installation stability.

Referring to fig. 5 to 7 in combination, optionally, the base plate 121 is provided with a mounting hole 1211, and the reinforcing post 124 is in plug-in fit with the mounting hole 1211, so that the contact area between the reinforcing post 124 and the mounting hole 1211 is larger, and when the reinforcing post 124 is welded to the base plate 121, the welding area can be increased, and the connection stability can be improved. Of course, the tool holder 12 may be a non-sheet metal structure, and the reinforcing column 124 and the bottom plate 121 may be an integral structure.

Referring to fig. 8 again, further, a countersink 113 is provided on the outer side of the housing 11, the reinforcing column 124 is inserted into the countersink 113, and the fastening member 51 penetrates through the bottom wall of the countersink 113. Accordingly, the bottom wall of the sink 113 is provided with a fixing hole through which the fastener 51 is inserted. During assembly, the reinforcing column 124 on the tool holder 12 is inserted into the countersunk groove 113 of the housing 11, and the countersunk groove 113 plays a role in pre-positioning the reinforcing column 124, so that the tool holder 12 can be limited to move relative to the housing 11 in a certain direction, and axial positioning of the through hole and the fixing hole is realized. Then, the fastening member 51 is inserted into the fixing hole and the through hole, so that the housing 11 and the tool holder 12 are locked. Optionally, the reinforcement post 124 and the countersink 113 are fitted, i.e., the reinforcement post 124 and the countersink 113 are an interference fit or a transition fit. Of course, the reinforcement post 124 and the countersink 113 may be a small clearance fit.

The fixing manner of the main body 10 and the static knife 20 comprises detachable fixing, such as clamping, inserting, screw connection and the like; the fixing means of the main body 10 and the stationary blade 20 may also include non-detachable fixing, such as welding.

Referring to fig. 5 and 9 in combination, in some embodiments, one of the main body 10 and the stationary blade 20 is provided with a plug-in tab 1222, and the other is provided with a socket 221, and the plug-in tab 1222 is plugged into the socket 221. The plug-in lug 1222 and the plug-in hole 221 are plugged in, so that the plug-in lug is convenient to position, install and detach.

In order to prevent the stationary blade 20 from being separated from the main body 10, the stationary blade 20 is further welded to the main body 10.

Specifically, the first side plate 122 includes a plate body 1221 and a plug tab 1222 that are connected to each other, and the plate body 1221 is connected to the bottom plate 121 of the main body 10; the stationary blade 20 is provided with an insertion hole 221, the penetrating direction of the insertion hole 221 is parallel to the first direction, and the stationary blade 20 is also abutted against one side of the plate 1221 facing away from the bottom plate 121. When assembled, the stationary blade 20 is moved closer to the first side plate 122 from a direction opposite to the first direction, such that the insertion tab 1222 is inserted into the insertion hole 221 in the first direction until the stationary blade 20 abuts against a side of the plate body 1221 facing away from the bottom plate 121, at which time the stationary blade 20 cannot continue to move in the opposite direction to the first direction, and the stationary blade 20 is also clamped to the tool holder 12 by the insertion tab 1222. Optionally, the plug tab 1222 is in the form of an elongated strip extending in the first direction. In other embodiments, the mating tabs 1222 may have other shapes, such as square, semi-circular, etc.

Parallel in the foregoing refers to parallel or nearly parallel.

When the penetrating direction of the insertion hole 221 is parallel to the first direction, the static knife 20 and the moving knife 30 can be more conveniently stacked and installed along the opposite direction of the first direction, and the assembly difficulty is reduced.

Since the stationary blade 20 abuts against the side of the plate body 1221 facing away from the bottom plate 121, the stationary blade 20 can be restricted from continuing to move in the opposite direction to the first direction. To limit the movement of the stationary blade 20 in the first direction, the walls of the receptacle 221 may further be welded to the plug tab 1222. In other embodiments, as shown in fig. 3, a stop 42 may be formed on the end cap 40, where the stop 42 abuts a side of the stationary blade 20 facing away from the blade holder 12 to limit movement of the stationary blade 20 in the first direction.

Optionally, the plug tab 1222 is located on a side of the plate 1221 facing away from the other first side plate 122.

Referring to fig. 3 and 10 in combination, in some embodiments, two end caps 40 are respectively disposed at two ends of the stationary blade 20, a receiving groove 41 is disposed on a side of the end cap 40 facing the stationary blade 20, and the insertion protrusion 1222 and an end of the stationary blade 20 are located in the receiving groove 41, so that a connection position between the end of the stationary blade 20 and the insertion protrusion 1222 can be blocked by the end cap 40, the connection position is prevented from being exposed, and risk of collision and loosening between the connection position and other external structures is reduced. In this embodiment, one of the groove walls of the receiving groove 41 may constitute the above-described stopper 42.

Referring again to fig. 5 and 9 in combination, in particular, the stationary blade 20 includes a body 21 and a mounting boss 22, the body 21 interacting with the movable blade 30 to effect shearing; the installation bulge 22 is located the terminal surface of body 21, and installation bulge 22 is equipped with jack 221, and grafting lug 1222 and jack 221 close-fitting ground are inserted and are closed, and installation bulge 22 is located the accepting groove 41, and body 21 is located the accepting groove outward, and the terminal surface of body 21 can with end cover 40 butt to can restrict quiet sword 20 and follow the direction of distribution of two end covers 40 and remove.

Referring again to fig. 10 in combination, the receiving slot 41 has a first notch 43 facing the stationary blade 20, the receiving slot 41 also has a second notch 44 facing the housing 11, and when assembled, the plug tab 1222 and the end of the stationary blade 20 can slide into the receiving slot 41 from the second notch 44 to facilitate mating of the end cap 40 and the stationary blade 20. In other embodiments, the receiving slot 41 may not be provided with the second notch 44, and the insertion tab 1222 and the end of the stationary blade 20 may be inserted into the receiving slot 41 from the first notch 43.

The side wall of the receiving groove 41 facing the second notch 44 constitutes the above-described stopper 42. Since the stationary blade 20 is already fixed to the blade holder 12 (e.g., by the mating fixation of the insertion tab 1222 and the insertion hole 221 or by welding), the limiting portion 42 may not be provided for limiting. Or, a smaller gap is formed between the static cutter 20 and the limiting part 42 in the first direction, so that on one hand, the static cutter 20 and the end cover 40 are conveniently assembled, and the situation that the static cutter cannot be assembled due to inaccurate alignment caused by machining errors or installation errors is prevented; on the other hand, the limiting portion 42 also has a certain limiting effect, and can further prevent the stationary blade 20 from being separated in the first direction.

Further, the stationary blade 20 is provided with a positioning hole 222, the positioning hole 222 is opened along the first direction, and the positioning hole 222 may be disposed on the mounting protrusion 22. The positioning holes 222 may be provided to facilitate positioning of the stationary blade 20 during machining.

Referring to fig. 11 to 14 in combination, in some embodiments, the main body 10 includes a housing 11 and a fixing frame 13, a mounting cavity 111 is formed in the housing 11, and the end cap 40 is fixed to the fixing frame 13. In this embodiment, the main body 10 includes two detachable parts, namely, the housing 11 and the fixing frame 13, and the housing 11 and the fixing frame 13 are separately manufactured, thereby facilitating the simplification of the manufacturing process. In other embodiments, the housing 11 and the fixing frame 13 may be integrally formed, for example, both are metal pieces, and integrally formed, such as integrally drawn and stamped. Alternatively, the housing 11 is a metal member, the fixing frame 13 is a plastic member, and is integrally injection-molded on the housing 11.

In some embodiments, the mount 13 is positioned within the mounting cavity 111, the end cap 40 and mount 13 are secured by fasteners 51, and the housing 11 is provided with relief holes 114 through which the fasteners 51 pass. Through setting up mount 13 in shell 11, shell 11 will be more spare part acceptd in, and the outward appearance of consequently whole tool bit structure 100 of formation is more complete smooth, can reduce and collect dirty. The end cap 40 and the fixing frame 13 may be welded or fastened. Likewise, the fixing frame 13 may be disposed outside the housing 11.

Further, a positioning boss 115 is arranged on the outer surface of the shell 11, and a relief hole 114 penetrates through the positioning boss 115; the end cover 40 is provided with a positioning groove 45, and the positioning groove 45 is in fit connection with the positioning boss 115. The positioning boss 115 can be matched with the positioning groove 45 to realize the pre-positioning installation of the end cover 40, so that the fastener 51 can be better aligned with the holes on the structures of the fixing frame 13, the shell 11 and the end cover 40 to be inserted, and the fixation of the three can be realized. On the other hand, the positioning boss 115 can strengthen the local thickness and strength of the housing 11, and after the housing 11 is provided with the relief hole 114, the position of the housing 11 provided with the relief hole 114 will not break due to insufficient strength because the positioning boss 115 corresponds to the position of the relief hole 114.

In some embodiments, the fixing frame 13 is plate-shaped, and the plate-shaped fixing frame 13 has a regular shape and low processing difficulty. Of course, the fixing frame 13 may also have a rod shape, a column shape or other shapes.

In some embodiments, the holder 13 and the tool post 12 are distributed along the first direction, so that the entire tool bit structure 100 can be prevented from having an oversized shape in a direction perpendicular to the first direction. Meanwhile, when the plate-shaped fixing frame 13 is adopted, the arrangement mode is more reasonable and the space of the main body part 10 can be fully utilized, which is equivalent to that the tool rest 12 and the fixing frame 13 are overlapped in the thickness direction.

Further, the fixing frame 13 is provided with a relief hole 131 through which a driving shaft of a driving unit is inserted, the driving shaft is connected with the movable blade 30, and the driving unit drives the movable blade 30 to move through the driving shaft. The drive shaft may be a motor shaft. The drive unit is thereby arranged on the side of the holder 13 facing away from the tool holder 12.

Further, the outer side surface of the housing 11 is provided with a mounting groove 116, at least a portion of the end cap 40 is embedded in the mounting groove 116, and the relief hole 114 penetrates the groove wall of the mounting groove 116. In this embodiment, the mounting groove 116 can also serve as a pre-positioning function for the mounting of the housing 11 and the end cap 40. When the positioning boss 115 is provided, the positioning boss 115 is located in the mounting groove 116. Alternatively, the notch of the installation groove 116 is opened in the first direction, and the positioning boss 115 is provided at the groove bottom wall of the installation groove 116.

The end cap 40 may be fully embedded within the mounting recess 116, although in some embodiments, a portion of the end cap 40 is embedded within the mounting recess 116 and another portion of the end cap 40 protrudes out of the mounting recess 116, thereby enabling the end cap 40 to be shielded from the ends of the tool holder 12 and stationary blade 20.

In some embodiments, the tool bit structure 100 includes two end caps 40, where the two end caps 40 are disposed on opposite sides of the stationary blade 20, and the two end caps 40 are respectively fixed to the same holder 13. Thus, one fixing bracket 13 is provided while being connected to both end caps 40, and assembly steps can be reduced with respect to both fixing brackets 13. And a bigger mount 13 is better in the possibility of losing parts and is lower in the difficulty of assembling compared with two smaller mounts 13.

In addition, the cutter head structure 100 may also be provided with an end cover 40, and the end cover 40 is annular and is disposed around the stationary cutter 20.

In some embodiments, the end cap 40 is in the shape of a small lower end and a large upper end, alternatively, the width of the end cap 40 near the lower end is smaller and substantially uniform, and the width of the end cap 40 near the upper end gradually increases from bottom to top and then gradually decreases, so that the upper end of the end cap 40 is similar to a shape with two ears, and the static blade 20 and the blade holder 12 can be better shielded at the upper end. The width in this embodiment refers to a width in a direction perpendicular to both the first direction and the second direction. In addition, the shape of the end cap 40 is not limited to the above embodiment, but may be hemispherical, quarter spherical, or the like.

In some embodiments, the housing 11 of the main body 10 includes a first housing and a second housing 117 distributed along the first direction and separately disposed, the second housing 117 being located between the tool post 12 and the first housing, the tool post 12 and the fixing frame 13 of the main body 10 being respectively fixed to the second housing 117 and distributed on both inner and outer sides of the second housing 117; the driving unit is disposed in the first housing. The first housing and the second housing 117 are separately provided, so that the processing difficulty can be reduced.

In addition, the housing 11 may be a complete shell.

The embodiments of the present application also provide a hair trimmer, which may specifically be a shaver, a hair clipper, a hair trimmer, etc., and is not specifically limited herein. The hair trimmer comprises a drive unit (not shown) and a cutter head structure 100, and the detailed structure of the cutter head structure 100 and the drive unit is referred to the above embodiments, and will not be repeated here.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (18)

1. A cutter head structure, comprising:

a main body part having a mounting cavity;

the static knife is fixed with the main body part and is exposed out of the mounting cavity;

the movable knife and the static knife are arranged in a stacked mode along a first direction, the movable knife can reciprocate in a second direction relative to the static knife under the drive of the driving unit so as to realize shearing, and the second direction intersects with the first direction; the method comprises the steps of,

the end cover is arranged to cover the end part of the static knife and is fixedly connected with the main body part, and the end cover can be exposed out of the main body part.

2. The bit construction of claim 1 wherein the body portion comprises a housing and a cartridge disposed separately, the housing defining the mounting cavity therein;

the knife rest is fixed on the outer side of the shell, and the static knife is fixedly connected with the knife rest.

3. The tool bit structure of claim 2, wherein the tool holder includes a base plate and a first side plate, the base plate being secured to the housing, the first side plate being connected to an edge of the base plate, and the first side plate protruding from a side of the base plate facing away from the housing; the static knife is fixed with the first side plate, and the movable knife is positioned between the static knife and the bottom plate.

4. The tool bit structure of claim 3, wherein the tool holder comprises two first side plates, the two first side plates are distributed on two opposite sides of the bottom plate and correspondingly support and fix the two opposite sides of the stationary tool;

the knife rest further comprises a plurality of second side plates connected with the bottom plate, the first side plates and the second side plates are distributed along the circumference of the bottom plate, the first side plates, the second side plates and the bottom plate are jointly enclosed to form a containing cavity, an opening of the containing cavity is away from the shell, and the movable knife is arranged in the containing cavity.

5. The bit structure of claim 2, wherein a side of the holder facing the housing is provided with a reinforcing post, the reinforcing post being secured to the housing by a fastener.

6. The bit structure of claim 5, wherein the outer side of the housing is provided with a countersink, the reinforcing post is inserted into the countersink, and the fastener extends through a bottom wall of the countersink.

7. The cutter head structure according to any one of claims 1 to 6, wherein one of the main body portion and the stationary cutter is provided with a plug-in projection, and the other is provided with a plug-in hole, and the plug-in projection is plugged into the plug-in hole; and/or the number of the groups of groups,

the main body part and the static knife are welded.

8. The bit structure of claim 7, wherein the first side plate of the body portion includes a plate body and the plug-in projection connected to each other, the plate body being connected to the bottom plate of the body portion;

the static knife is provided with the jack, the through direction of the jack is parallel to the first direction, and the static knife is also abutted to one side, deviating from the bottom plate, of the plate body.

9. The tool bit structure of claim 7, wherein a side of the end cap facing the stationary blade is provided with a receiving slot, and the insertion projection and an end of the stationary blade are positioned in the receiving slot.

10. The bit structure of claim 9, wherein the pocket has a first notch facing the stationary blade, the pocket further having a second notch facing the housing of the body portion, the insert tab and the end of the stationary blade being slidable into the pocket from the second notch.

11. The bit structure of claim 1, wherein the body portion includes a housing and a mount that are separately provided, the housing defining the mounting cavity therein, the end cap being secured to the mount.

12. The bit architecture of claim 11 wherein the mount is positioned within the mounting cavity, the end cap and mount being secured by fasteners, the housing being provided with relief holes through which the fasteners pass.

13. The bit construction of claim 12 wherein the outer surface of the housing is provided with a locating boss through which the relief hole extends; the end cover is provided with a positioning groove, and the positioning groove is spliced with the positioning boss in an adaptive manner.

14. The tool bit structure of claim 12, wherein the holder has a plate shape, and the holders of the holder and the body are distributed along the first direction; the fixing frame is provided with an avoidance hole for the driving shaft of the driving unit to penetrate, and the driving shaft is connected with the movable knife.

15. The cutter head structure according to any one of claims 12 to 14, wherein an outer side surface of the housing is provided with a mounting groove, at least a portion of the end cap is embedded in the mounting groove, and the relief hole penetrates a groove wall of the mounting groove.

16. The tool bit structure of claim 11, wherein the tool bit structure comprises two end caps, the two end caps being disposed at opposite ends of the stationary blade along the second direction, the two end caps being respectively secured to the same holder.

17. The tool bit structure of claim 11, wherein the housing of the main body comprises a first housing and a second housing which are distributed along the first direction and are separately arranged, and the tool rest and the fixing frame of the main body are respectively fixed with the second housing and are distributed on the inner side and the outer side of the second housing; the driving unit is disposed in the first housing.

18. A hair trimmer, comprising:

a cutter head structure as claimed in any one of claims 1 to 17; the method comprises the steps of,

the driving unit is arranged in the mounting cavity and is in driving connection with the movable knife so as to drive the movable knife to reciprocate along the second direction.