CN216781922U - Stationary blade of hair cutter and hair cutter - Google Patents

Abstract

The utility model discloses a static knife of a hair cutter and the hair cutter, the static knife is matched with a movable blade to cut hair, the static knife is provided with at least one static knife cutting part, the static knife is provided with a first surface facing skin and a second surface opposite to the first surface, the static knife is provided with a local concave area, the local concave area is formed on the first surface or the second surface, and the local concave area is at least partially superposed with the area of the static knife cutting part. The static knife is provided with the local concave area, so that the functional requirement of cutting short hair can be met, the bending deformation caused by insufficient strength of the blade can be avoided, the abrasion between the static knife and the dynamic knife caused by microcosmic deformation is avoided, and the temperature rise is effectively reduced; the static knife in the form reduces the element design of the traditional blade component which needs to increase the strength of the moving knife, reduces the difficulty in assembly, avoids the working hours consumed by multi-element die sinking design, and correspondingly reduces the cost of raw materials.

Description

Stationary blade of hair cutter and hair cutter

Technical Field

The utility model relates to a stationary knife and a hair cutter using the same.

Background

In the' 201520235738.6 patent application, a stationary blade and blade set is disclosed, in particular, as shown in fig. 1, the stationary blade being arranged to move through hair in a direction of movement for cutting the hair, comprising a first wall portion arranged to function in operation as a skin-facing wall, a second wall portion offset from the first wall portion such that the first and second wall portions define a guide slot therebetween arranged to receive a movable cutting blade, at least one toothed leading edge formed by the first and second wall portions together, wherein the at least one toothed leading edge comprises a plurality of teeth, wherein the first and second wall portions are connected at a front end of the at least one leading edge, thereby forming tips of the teeth, wherein the stationary blade is an integrally formed metal-plastic composite stationary blade, wherein the first wall portion is at least partially made of a metal material, and wherein the second wall portion is at least partially made of a plastic material. In the above patent, in order to secure the strength of the stationary blade, the second wall portion is provided to reinforce the strength of the first wall portion. The second wall portion for reinforcement is again provided at least partly of a plastic material, which, after being provided, to a certain extent meets the strength required for a thinner stationary knife, but the forming process and costs are high. In addition, in order to achieve better cutting effect by cutting shorter hair, the blade assembly in the prior art needs to provide a supporting structure (a fixed blade seat) used in cooperation with the fixed blade to increase the strength of the fixed blade, so as to avoid the phenomenon that the moving blade shakes or jumps when the moving blade is used due to the fact that the fixed blade bends and deforms in the direction perpendicular to the moving direction of the moving blade. In general, there is also a blade set in the prior art, in which a support structure for supporting a stationary blade is provided, the support structure having a wall portion along the moving direction of the movable blade, by which wall portion the wall portion of the movable blade is supported. Although this form can also enhance the strength of the static knife to some extent, it requires an increase in the supporting structure, which is equivalent to an increase in the thickness of the whole static knife tooth, and therefore, this design cannot be used to cut short hairs, or when cutting short hairs, the cutting effect is not ideal.

Due to the high precision required by the razor in cutting, the requirements on the fit of the various elements in the razor blade set are high, and even if the precision required is a few tenths of a millimeter worse, the hair may not be cut and may be pulled or jump. The die opening cost and the difficulty of the manufacturing process are multiplied for each added element. Accordingly, as can be appreciated from the foregoing description of the prior art, none of the existing razor blade sets simultaneously address the issues of strength, cutting effectiveness, and manufacturing process of the razor.

Disclosure of Invention

Accordingly, the present invention provides a stationary blade of a hair cutter and a hair cutter.

In order to achieve the purpose, the utility model provides the following technical scheme:

a static knife of a hair cutter is matched with a movable blade to cut hair in the moving direction of the movable blade, the static knife is provided with at least one static knife cutting part, static knife teeth are formed in the static knife cutting part, a cutting groove is formed between every two adjacent static knife teeth, the static knife is provided with a first surface facing the skin and a second surface opposite to the first surface, the static knife is provided with a local concave area, the local concave area is formed on the first surface or the second surface, and the local concave area is at least partially overlapped with the area where the static knife cutting part is located.

Specifically, the static knife shearing portion extends along the moving direction of the moving knife, and the local concave area covers the area where the static knife shearing portion is located.

Specifically, the static knife comprises a static blade body, the static blade body comprises a plane part and two inclined plane parts extending from two sides of the plane part, the shearing part of the static knife is formed at the plane part or the inclined plane part, or the joint of the plane part and the corresponding inclined plane part, and the local concave area is formed at least at one of the plane part or the inclined plane part.

Specifically, quiet sword includes a quiet blade body, quiet blade body includes a plane portion, two inclined plane portions that extend by plane portion both sides, and the transition forms the arc face portion between plane portion and the inclined plane portion, quiet sword shearing portion forms at plane portion, inclined plane portion or arc face portion, or the junction of arc face portion and corresponding plane portion, inclined plane portion or arc face portion at least one of them forms the local concave region.

Specifically, the stationary knife comprises a stationary blade body, the stationary blade body comprises a first plane portion, two second plane portions extending from two sides of the first plane portion, and two curved surface portions extending from the second plane portions, the first plane portion and the corresponding second plane portions are in transition to form an arc surface portion, the stationary knife shearing portion is arranged on the first plane portion, the second plane portion and the arc surface portion, and the local concave area is formed on at least one of the first plane portion, the second plane portion or the arc surface portions.

Specifically, quiet sword includes two connecting walls, two connecting walls set up relatively, two connecting walls set up the location structure who is used for fixing a position quiet sword.

Specifically, quiet sword still includes quiet sword fixing base, quiet sword fixing base set up with location structure matched with assistance-localization real-time structure, fix a position quiet sword through the mode of grafting needle or thin axle between location structure and the assistance-localization real-time structure.

Specifically, the fixed knife holder is provided with two opposite fixed knife holding walls, the fixed knife is provided with two end parts in the moving direction of the movable knife, and the fixed knife holding walls are arranged on the outer sides of the two end parts in a connected mode.

Specifically, quiet sword still includes quiet sword fixing base, quiet sword fixing base has two support walls, quiet sword is around forming the insertion groove, and quiet sword is forming the notch of insertion groove at the both ends along moving the sword moving direction, quiet sword fixing base is by the notch of insertion groove insert in the quiet sword with quiet sword cooperation, support wall supports the part that the quiet sword corresponds the insertion groove both sides.

Specifically, the local concave areas are located at the teeth of the stationary knife on two sides of the stationary knife.

The utility model also discloses a hair cutter, which comprises the static cutter and the movable cutter matched with the static cutter, wherein the movable cutter is provided with a movable cutter tooth part matched with the shearing part of the static cutter, and the movable cutter tooth part forms movable cutter teeth.

The hair cutter comprises a movable cutter seat, a movable cutter is arranged on the movable cutter seat, the movable cutter seat is connected with the movable cutter and used for driving the movable cutter to move in a reciprocating mode, an elastic piece is arranged between the movable cutter seat and a fixed cutter fixing seat, and the elastic piece has elastic force perpendicular to the moving direction of the movable cutter and pushes the movable cutter to the fixed cutter.

Specifically, the hair cutter further comprises a movable cutter support and an elastic part, the movable cutter support is connected with the movable cutter, the elastic part has elastic force perpendicular to the moving direction of the movable cutter, one end of the elastic part is limited by the fixed cutter fixing seat, and the other end of the elastic part tightly presses the movable cutter.

Specifically, the hair cutter further comprises a movable cutter support, an elastic part and a fixed part support, the movable cutter support is connected with the movable cutter, the fixed part support is connected with the fixed cutter fixing seat, the elastic part has elastic force perpendicular to the moving direction of the movable cutter, one end of the elastic part is limited by the fixed part support, and the other end of the elastic part tightly presses the movable cutter.

Specifically, the mounting support sets up the connection structure who is connected with quiet sword fixing base, quiet sword fixing base sets up and connection structure complex auxiliary connection structure, be connected through the mode of grafting or buckle between connection structure and the auxiliary connection structure.

Specifically, the hair cutter further comprises a movable blade limiting part, the movable blade limiting part is arranged to be fixed relative to the movable blade, and the movable blade limiting part is provided with a guide structure for guiding and limiting the movement of the movable blade.

Specifically, the movable knife limiting part is connected with the elastic part or the fixed knife fixing seat.

The utility model has the beneficial effects that: the static knife is provided with the local concave area, so that the functional requirement of cutting short hair can be met, the bending deformation caused by insufficient blade strength can be avoided, the abrasion between the static knife and the dynamic knife caused by microscopic deformation is avoided, the temperature rise is effectively reduced, the static knife in the form reduces the element design of the transmission blade component needing to increase the strength of the dynamic knife, the difficulty in assembly is reduced, the working time consumed by multi-element die sinking design is also avoided, and the raw material cost is correspondingly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of a hair cutter in accordance with one embodiment of the present invention;

FIG. 2 is an exploded view of the other angle shown in FIG. 1;

FIG. 3 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 4 is an exploded view of the alternate angle of FIG. 2;

FIG. 5 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 6 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 7 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 8 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 9 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 10 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention;

FIG. 11 is an exploded view of a hair cutter in accordance with another alternate embodiment of the present invention, which is a schematic view similar to the embodiment of FIG. 6;

fig. 12 is an enlarged view of fig. 11 at a.

Reference numerals:

1. the cutting tool comprises a fixed cutter, 2, a movable cutter, 3, a fixed cutter cutting part, 4, fixed cutter teeth, 5, a cutting groove, 6, a movable cutter tooth part, 7, movable cutter teeth, 8, a first surface, 9, a second surface, 10, a local concave area, 11, a fixed cutter body, 12, a plane part, 13, an inclined plane part, 14, an arc surface part, 15, a first plane part, 16, a second plane part, 17, a curved surface part, 18, a fixed cutter fixing seat, 19, a connecting wall, 20, a positioning structure, 21, an auxiliary positioning structure, 22, a matching groove, 23, a fixed cutter retaining wall, 24, a seat body, 25, an end part, 26, an insertion groove, 27, a notch, 28, a supporting wall, 29, a bottom surface, 30, a side surface, 31, a movable cutter seat, 32, an elastic part, 33, a groove hole, 34, a supporting part, 35, an elastic prepressing part, 36, an arc surface section, 37, a movable cutter support, 38, a fixing part, 39, a connecting structure, 40, Auxiliary connection structure, 41, support wall portion, 42, cell body, 43, move sword locating part, 44, guide structure, 45, row's burr.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide a static knife of a shaver and a hair cutter applying the static knife, so as to simultaneously solve the problems of the strength, the shearing effect and the manufacturing process of the shaver.

The utility model will be further described with reference to the drawings.

The utility model provides the following technical scheme:

as shown in the accompanying drawings 1-12, the utility model discloses a static knife of a hair cutter and a hair cutter using the same. The hair cutter comprises a stationary blade 1 and a movable blade 2 cooperating with the stationary blade 1. The stationary blade 1 cooperates with the movable blade and are arranged to move relative to each other, typically to cut hair in the direction of movement of the movable blade 2. The static knife 1 is provided with at least one static knife shearing portion 3, the static knife shearing portions 3 form static knife teeth 4, a shearing groove 5 is formed between every two adjacent static knife teeth 4, the movable knife 2 is provided with a movable knife tooth portion 6 matched with the static knife shearing portions 3, and the movable knife tooth portion 6 forms movable knife teeth 7. The static knife 1 has a first surface 8 facing the skin and a second surface 9 opposite to the first surface 8, the static knife 1 has a locally concave area 10, and the locally concave area 10 is formed on the first surface 8 or the second surface 9. The hair cutter is in operation with its first surface 8 in contact with the skin. The locally recessed area 10 at least partially coincides with the area where the stationary blade cutting portion 3 is located.

Taking the attached drawings 1 and 2 as examples: the partially recessed area 10 is formed on the first surface 8, specifically, the stationary blade 1 includes a stationary blade body 11, the stationary blade body 11 includes a planar portion 12, two inclined surface portions 13 extending from two sides of the planar portion 12, and an arc surface portion 14 is formed by transition between the planar portion 12 and the inclined surface portion 13. Preferably, the two inclined surface portions 13 are provided symmetrically with respect to the center line of the planar portion. The static knife 1 is provided with two static knife shearing parts 3, and the static knife shearing parts 3 are formed at the connecting positions of an arc surface part 14 and a corresponding plane part 12 and an inclined plane part 13. The two stationary knife shearing portions 3 are arranged in parallel and extend along the moving direction of the moving knife. The locally recessed area 10 extends along the stationary blade cutting portion 3, the stationary blade 1 preferably forms a stationary blade body 11 having a planar portion 12, an inclined portion 13, and an arc portion 14 in a form of a prefabricated sheet body by bending or the like, and the stationary blade body 11 may be made of metal or other alloy materials with good welding performance. Specifically, referring to fig. 1 and 2, the locally recessed region 10 is a flat surface portion 12 formed in the stationary blade cutting portion 3 and covers the flat surface portion 12 of the stationary blade cutting portion 3 in the longitudinal direction of the stationary blade cutting portion 3. In the illustration, the locally recessed regions 10 are provided in correspondence with the planar portions 12 of the two stationary blade cutting portions 3, but in actual practice, the locally recessed regions 10 may be provided in only one of the planar portions 12, and the length of the locally recessed regions 10 is not required to cover the length of the stationary blade cutting portion 3, that is, the locally recessed regions 10 of the stationary blade cutting portion 3 may be provided at a certain section in the longitudinal direction of the stationary blade cutting portion 3.

It is understood that, in order to maintain the strength of the stationary blade 1 and simultaneously satisfy the requirement of having a blade tooth thin enough to cut shorter hairs, in practical implementation, the stationary blade cutting portion 3 may also be formed on one of the flat surface portion 12, the inclined surface portion 13 or the arc surface portion 14, and the locally depressed area 10 may be formed on at least one of the flat surface portion 12, the inclined surface portion 13 or the arc surface portion 14 in a matching manner according to practical requirements. As shown in fig. 3 and 4, according to another embodiment of the present invention, specifically, the stationary blade body 11 is provided in the same manner as in fig. 1, and the stationary blade cutting portion 3 extends in the moving direction of the movable blade 2, except that: the locally recessed area 10 covers all areas where the stationary blade cut 3 is located. So configured, a rectangular shaped opposing protrusion is formed in the center of the insert body. The locally recessed areas may be provided at the stationary blade teeth 4 located at both sides of the stationary blade 1. The static knife 1 is provided with the local concave area 10, so that the functional requirement of cutting short hair can be met, the bending deformation caused by insufficient strength of the blade can be avoided, the abrasion between the static knife and the dynamic knife caused by microscopic deformation is avoided, and the temperature rise is effectively reduced. The static knife 1 in the form reduces the element design of the traditional blade component which needs to increase the strength of the moving knife, reduces the difficulty in assembly, avoids the working hours consumed by multi-element die sinking design, and correspondingly reduces the cost of raw materials.

As shown in fig. 5, another embodiment of the present invention is described above, specifically, the form of the stationary blade body 11 is the same as that in fig. 1 and 3, and the stationary blade shearing portion 3 extends along the moving direction of the moving blade 2, and the difference is that: the static blade body 11 is provided with three static blade shearing portions 3, that is, with respect to fig. 1 and 2, fig. 5 also adds a static blade shearing portion 3 formed independently on a planar portion, and correspondingly, the locally recessed area 10 covers the static blade shearing portion 3 of the planar portion 12, and of course, the locally recessed area 10 of the planar portion 12 may also cover only a part of the static blade shearing portion 3 of the planar portion 12. The arrangement of the three stationary knife cutting portions 3 and the locally recessed areas 10 corresponding to the respective stationary knife cutting portions 3 is equivalent to a thickness reinforcing area formed between every two stationary knife cutting portions 3, and the arrangement mode can also increase the strength of the stationary knife 1. The thickness reinforced area may be two parallel reinforced parts, or may be formed into a frame form such as a square or a rectangle according to the position and shape of the local depressed area 10, which is not listed in the present application.

Of course, the static blade body 11 may be configured to include only one plane portion 12, two inclined surface portions 13 extending from two sides of the plane portion 12, the static blade cutting portion 3 is formed at the plane portion 12 or the inclined surface portion 13, or a connection between the plane portion 12 and the corresponding inclined surface portion 13, and the locally recessed area 10 is also formed at least at one of the plane portion 12 or the inclined surface portion 13.

Specifically, as shown in fig. 11 and 12, the stationary blade body 11 may further include a first flat portion 15, two second flat portions 16 extending from two sides of the first flat portion 15, and two curved portions 17 extending from the second flat portions 16, the first flat portion 15 and the corresponding second flat portion 16 transition to form an arc portion 14, the stationary blade cutting portion 3 is disposed on the first flat portion 15, the second flat portion 16, and the arc portion 14, or is disposed on the stationary blade cutting portion 3 and disposed on the first flat portion 15, the second flat portion 16, the arc portion 14, and a portion of the curved portion 17, and the locally recessed area 10 is formed at least on one of the first flat portion 15, the second flat portion 16, the arc portion 14, or the curved portion 17. The static blade body 11 thus configured can have a moving pre-pressing elastic force when the static blade body 11 is assembled through the curved surface portion 17, and the pre-pressing elastic force has a component force perpendicular to the moving direction of the movable blade 2, so that the micro deformation of the static blade body 11 can be effectively prevented. Since the precision required by the shaver in cutting is very high, the requirement on the matching degree of each element is also very high, and even if the required precision is lower by a few tenths of a millimeter, the phenomena of hair cutting failure, hair pulling or cutter jumping can occur.

Further, referring to fig. 1 to 6, specifically, the stationary knife 1 further includes a stationary knife fixing seat 18, the stationary blade body 11 further includes two connecting walls 19, and the two connecting walls 19 are disposed oppositely. Specifically, two connecting walls 19 are respectively formed by extending corresponding inclined surface portions 13 or curved surface portions 17 toward the fixed blade holder 18, the two connecting walls 19 are provided with positioning structures 20 for positioning the fixed blade 1, and the fixed blade holder 18 may be in an integral form as shown in fig. 1 or in a separate state as shown in fig. 5. The fixed knife fixing seat 18 is provided with an auxiliary positioning structure 21 matched with the positioning structure 20, and the fixed knife 1 is positioned between the positioning structure 20 and the auxiliary positioning structure 21 in a buckling, riveting, inserting needle or thin shaft mode.

Taking fig. 1 as an example, the specific structural form of the stationary blade 1 and the stationary blade fixing seat 18 and the connection manner between the two will be described in detail: in the present illustration, the two connecting walls 19 are parallel to each other, a matching groove 22 matching with the stationary blade fixing seat 18 is formed between the two connecting walls, and the positioning structure 20 is a groove formed at two ends of the two connecting walls 19, which may be a closed groove as shown in fig. 1, or a groove having an opening and formed by opening an end of the connecting wall 19 as shown in fig. 3. It should be noted here that the closure is opposite the opening, and the form of the groove should not be inferred or limited in this way. Preferably, in the disclosed embodiment, the auxiliary positioning structure 21 is a fitting groove 22 or a fitting hole formed in the stationary blade holder 18, which corresponds to a groove position provided on the connecting wall 19, and is connected thereto by forming a pin (shaft). The "inserting pin" means that in specific implementation, a shaft connecting the stationary knife and the stationary knife fixing seat 18 is very thin, and the thin shaft is limited by the limited installation space on the stationary knife and the stationary knife fixing seat. After the arrangement, when the stationary knife 1 is assembled with the stationary knife holder 18, the engaging groove 22 between the two connecting walls 19 does not need to be expanded temporarily to adapt to the protruding structure arranged on the stationary knife holder 18, the stationary knife body is very thin and generally only a few microns, the expansion of the connecting wall 19 caused by the temporary external force during the installation generally causes the micro-deformation of the stationary knife body, the required precision of the hair cutter during the cutting is very high, the requirement of the engaging degree of each element in the blade set of the hair cutter is very high, even if the required precision is slightly different by a few microns, the phenomena of hair cutting failure and hair plucking or knife jumping can occur, and the micro-deformation will influence the mutual engagement of the whole blade set, influence the cutting effect and also cause the cutting comfort degree influenced by the hair plucking phenomenon, the embodiment disclosed by the utility model can effectively avoid the defects.

Specifically, the stationary blade holder 18 has two opposing stationary blade holding walls 23. It will be understood that when the stationary blade holder 18 is of the integral form as shown in fig. 1 to 4, the stationary blade holder 18 has a holder body 24 connecting two stationary blade holding walls 23. The stationary blade 1 has two end portions 25 in the moving direction of the movable blade 2, and the stationary blade holding wall 23 is provided corresponding to the two end portions 25 of the stationary blade 1. In fig. 1 to 5, the stationary blade holding walls 23 are disposed outside the both end portions 25 in contact with each other. "meet" means that the two ends of the static blade 1 and the static blade holding wall 23 contact with each other to protect the static blade 1.

The stationary knife fixing seat 18 may also have a structure as shown in fig. 6 to 10, specifically, the stationary knife fixing seat 18 has two supporting walls 28, and similarly, the stationary knife fixing seat 18 may be in an integral form or in a split state, and as shown in fig. 6 to 10, the stationary knife fixing seat 18 is in an integral form, and the stationary knife fixing seat 18 has a seat body 24 connecting the two supporting walls 28. The fixed blade body 11 forms an insertion groove 26 in a surrounding manner, notches 27 of the insertion groove 26 are formed at two ends of the fixed blade body 11 along the moving direction of the movable blade 1, the fixed blade fixing seat 18 is inserted into the fixed blade 1 from the notch 27 of the insertion groove 26 to be matched with the fixed blade 1, and the supporting wall 28 supports parts of the fixed blade 1 corresponding to two sides of the insertion groove 26, that is, the supporting wall 28 supports parts of the fixed blade 1 corresponding to the notch 27 of the insertion groove 26. More specifically, the supporting wall 05 supports at least a portion of the first plane 15. The first plane portion 15 is the same as the plane portion in fig. 1 to 5, and both the first plane portion 15 and the plane portion 12 are planes disposed opposite to the stationary blade holder 18. When the stationary blade body 11 is assembled with the stationary blade holder 18, the stationary blade holder 18 extends from one end of the support wall 28 into the insertion slot 26 through the slot of the insertion slot 26, that is, the support wall 28 faces the slot during the assembly process. Taking the direction shown in fig. 6 as an example, the cross section of the supporting wall 28 along the moving direction of the moving blade 1 is the same as that of the notch, and after the assembly is completed, the bottom surface 29 and the two side surfaces 30 of the supporting wall 28 both form a support for the fixed blade body 11 at the notch position. That is, the bottom surface 29 of the support wall 28 supports the stationary blade body 11, and the two side surfaces 30 support at least the inclined surface portion 13 of the stationary blade body 11 depending on the form of the stationary blade body 11. During the process of assembling the stationary blade body 11 and the stationary blade holder 18, the plane portion 12 is easily bent and deformed as shown in the figure under the action of the inclined surface portion 13 of the stationary blade body 11, the supporting wall 28 is in contact with the stationary blade during the process of the cooperative assembly of the supporting wall 28 and the stationary blade body 11, the supporting wall 28 and the holder body 24 of the stationary blade holder 18 form a structure similar to an arch or a structure similar to "n", the stationary blade holder 18 is easily bent and deformed along the direction "n" under the limitation of the structure, and the deformation formed under the action of the deformation is intersected with the deformation formed by the stationary blade body 11. That is, the stationary blade holder 18 is disposed in such a manner as to suppress and cancel out the microscopic deformation of the stationary blade body 11, and similarly, the microscopic deformation of the stationary blade body 11, which is likely to occur in the stationary blade holder 18, is also suppressed and cancelled out. Therefore, the arrangement mode of the static knife 1 has high stability of the whole static knife 1, meets the high-precision matching requirement of all parts required by the shaver in work, avoids abrasion between the static knife and the dynamic knife caused by micro deformation, and effectively reduces temperature rise; meanwhile, the shape of the static cutter 1 is kept, so that the shearing force formed between the static cutter teeth 4 and the movable cutter teeth 6 during shearing is guaranteed, the galling problem is avoided, and the use comfort is further improved. No other supporting element is arranged between the static cutter teeth 4 and the movable cutter teeth 6, and compared with the structural design that the supporting element is arranged between the static cutter teeth 4 and the movable cutter teeth 6 in the prior art, the thickness of the static cutter teeth 4 is reduced as a whole, so that the hair cutter is more suitable for cutting shorter hair.

Specifically, the hair cutter further comprises a movable cutter holder 31, and the movable cutter holder 31 is connected with the movable cutter 2 and used for driving the movable cutter 2 to move in a reciprocating manner. The movable blade 2 and the movable blade seat 31 are arranged to be relatively fixed, and the movable blade seat can be fixed through clamping, bonding, welding and the like. Generally, the movable blade holder 31 is connected to a power source having a force for driving the movable blade holder 31 to reciprocate.

Specifically, referring to fig. 6 to 10, the supporting walls 28 of the stationary blade fixing seat 18 are perpendicular to the moving direction of the moving blade 2, and in practical implementation, the supporting walls 28 may also be arranged to be inclined to the moving direction of the moving blade 2. The support walls 28 may be further configured in a rectangular, triangular, arcuate, "concave" or "convex" configuration in addition to the configuration shown in fig. 6. The support wall 28 may be provided only so that the bottom surface 29 thereof supports the planar portion 12 at the notch, and is not necessarily designed so that both side surfaces 30 form a support for the stationary blade body 11 at the notch position. That is, the cross-sectional shape of the supporting wall 28 is not necessarily limited to be the same as or matched with the notch, and when the supporting wall 28 is configured in a rectangular shape, a triangular shape, an arched shape, a concave shape or a convex shape, a row of burrs 45 may be further formed at the supporting wall 28 and the notch, so that the hairs inserted into the insertion slot 26 can be easily cleaned.

As shown in fig. 1, an elastic element 32 is disposed between the movable blade holder 31 and the stationary blade holder 18, the elastic element 32 is a spring 32 installed between the movable blade holder 31 and the stationary blade holder 18, and the elastic element 32 has an elastic force perpendicular to the moving direction of the movable blade to push the movable blade 2 toward the stationary blade 1. After the arrangement, the static cutter teeth 4 and the movable cutter teeth 6 are mutually attached, shorter hairs can be cut, and the stability of the whole blade set is higher. Specifically, the stationary knife fixing seat 18 is provided with a slot 33, and the upper part of the movable knife holder 31 extends into the slot 33 to be connected with a power source. The fixed knife fixing seat 18 is provided with a concave area facing the fixed blade body 11 in the attached drawing 1, the height of the fixed knife fixing seat 18 is reduced due to the design, the overall assembly space of the hair trimmer is further reduced, the overall volume design is more miniaturized while the structural stability of the hair trimmer is improved, and the fixed knife fixing seat is convenient to carry and store.

Specifically, as shown in fig. 6, the hair cutter may further include a movable blade holder 37 and an elastic member 32, the movable blade holder 37 is connected to the movable blade 2, the elastic member 32 has an elastic force perpendicular to the moving direction of the movable blade 2, and the difference between the elastic member and the hair cutter is as follows: one end of the elastic element 32 is limited by the stationary knife fixing seat 18, and the other end of the elastic element 32 presses the movable knife 2. Specifically, the elastic member 32 has a supporting portion 34, and two elastic prepressing portions 35 respectively extending from two sides of the supporting portion 34, where the elastic prepressing portions 35 have an arc surface section 36 in pre-pressing contact with the moving blade 2. The supporting portion 34 is connected to the stationary blade fixing seat 18, specifically, the stationary blade fixing seat 18 is provided with a slot 33, and the supporting portion 34 extends into the slot 33 and is mutually buckled with the slot 33, so that the elastic member 32 and the stationary blade fixing seat 18 form a relatively fixed connection mode.

Specifically, as shown in fig. 5, the hair cutter may further include a movable blade holder 37, an elastic member 32, and a fixed member holder 38, wherein the movable blade holder 37 is connected to the movable blade 2, and the fixed member holder 38 is connected to the stationary blade holder 18. The elastic member 32 has an elastic force perpendicular to the moving direction of the moving blade 2, one end of the elastic member 32 is limited by the fixing member bracket 38, and the other end of the elastic member 32 presses the moving blade 2. In particular, the elastic member 32 is the same as the elastic member 32 in fig. 6. Mounting support 38 sets up the connection structure 39 who is connected with quiet sword fixing base 18, quiet sword fixing base 18 sets up and connection structure 39 complex auxiliary connection structure 40, and is concrete, connection structure 39 is for setting up the spread groove at mounting support 38 both ends, auxiliary connection structure 40 is for setting up the bulge at quiet sword fixing base 18, two bulges stretch into corresponding spread groove in with mounting support 38 and quiet sword fixing base 18 relatively fixed. The connection structure 39 and the auxiliary connection structure 40 are connected by means of a plug-in or snap-in connection, and a specific connection method similar to that which can be considered by those skilled in the art is not illustrated here. The movable blade holder 37 has two holder wall portions 41 connected to the movable blade 2, and the fixed member holder 38 and the elastic member 32 are both provided with a slot 42 through which the holder wall portions 41 pass. The slot 42 may be configured to extend along the moving direction of the movable blade 2, and after the configuration, the moving displacement of the movable blade holder 37 may be further limited by the slot 42.

Specifically, the hair cutter further comprises a movable blade limiting piece 43, the movable blade limiting piece 43 is arranged to be fixed relative to the movable blade 2, and the movable blade limiting piece 43 can be arranged to be connected with the elastic piece 32 or the stationary blade fixing seat 18. The movable blade limiting part 43 may be fixed to the elastic part 32 or the stationary blade fixing base 18, and specifically, the connection manner between the movable blade limiting part 43 and the elastic part 32 or the stationary blade fixing base 18 may be fixed connection such as welding (spot welding or butt welding), secondary forming fixing, or detachable connection manner such as a buckle. The moving blade limiting part 43 is provided with a guiding structure 44 for guiding and limiting the movement of the moving blade 2.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (17)

1. A quiet sword of hair cutter, quiet sword and movable blade cooperation are cut hair in the direction of movement of moving sword, its characterized in that: the static knife is provided with at least one static knife cutting part, the static knife cutting part forms static knife teeth, a cutting groove is formed between every two adjacent static knife teeth, the static knife is provided with a first surface facing the skin and a second surface opposite to the first surface, the static knife is provided with a local concave area, the local concave area is formed on the first surface or the second surface, and the local concave area is at least partially overlapped with the area of the static knife cutting part.

2. The stationary blade of a hair cutter as set forth in claim 1, wherein: the static knife shearing part extends along the moving direction of the movable knife, and the local concave area covers the area where the static knife shearing part is located.

3. The stationary blade of a hair cutter as set forth in claim 1, wherein: the static knife comprises a static blade body, the static blade body comprises a plane part and two inclined plane parts extending from two sides of the plane part, the shearing part of the static knife is formed at the plane part or the inclined plane part, or the joint of the plane part and the corresponding inclined plane part, and the local concave area is formed at least at one of the plane part or the inclined plane part.

4. The stationary blade of a hair cutter as set forth in claim 1, wherein: the static knife comprises a static blade body, the static blade body comprises a plane part and two inclined plane parts extending from two sides of the plane part, an arc surface part is formed by transition between the plane part and the inclined plane parts, the static knife shearing part is formed at the plane part, the inclined plane part or the arc surface part, or the junction of the arc surface part and the corresponding plane part and inclined plane part, and at least one of the plane part, the inclined plane part or the arc surface part forms the local concave area.

5. The stationary blade of a hair cutter as set forth in claim 1, wherein: the static knife comprises a static knife blade body, the static knife blade body comprises a first plane part, two second plane parts and two curved surface parts, the second plane parts extend from two sides of the first plane part, the curved surface parts extend from the second plane parts, the first plane part and the corresponding second plane parts are in transition to form an arc surface part, the static knife shearing part is arranged on the first plane part, the second plane part and the arc surface part, and the local concave area is formed on at least one of the first plane part, the second plane part or the arc surface part.

6. The stationary blade for a hair cutter according to any one of claims 1 to 5, wherein: the static knife comprises two connecting walls, the two connecting walls are arranged oppositely, and the two connecting walls are provided with positioning structures used for positioning the static knife.

7. The stationary blade of a hair cutter as set forth in claim 6, wherein: the static knife further comprises a static knife fixing seat, the static knife fixing seat is provided with an auxiliary positioning structure matched with the positioning structure, and the static knife is positioned between the positioning structure and the auxiliary positioning structure in a mode of inserting needles or thin shafts.

8. The stationary blade of a hair cutter as set forth in claim 7, wherein: the static knife fixing seat is provided with two opposite static knife retaining walls, the static knife is provided with two end parts in the moving direction of the moving knife, and the static knife retaining walls are arranged on the outer sides of the two end parts in a connected mode.

9. The stationary blade for a hair cutter according to any one of claims 1 to 5, wherein: the static knife further comprises a static knife fixing seat, the static knife fixing seat is provided with two supporting walls, the static knife surrounds to form an insertion groove, notches of the insertion groove are formed at two ends of the static knife along the moving direction of the moving knife, the static knife fixing seat is inserted into the static knife from the notches of the insertion groove to be matched with the static knife, and the supporting walls support parts, corresponding to two sides of the insertion groove, of the static knife.

10. The stationary blade of a hair cutter as set forth in claim 1, wherein: the local concave areas are positioned at the teeth of the static knife at the two sides of the static knife.

11. A hair cutter characterized by: the fixed knife comprises the fixed knife according to claims 1-10 and a movable knife matched with the fixed knife, wherein the movable knife is provided with a movable knife tooth part matched with a cutting part of the fixed knife, and the movable knife tooth part forms movable knife teeth.

12. The hair cutter of claim 11, wherein: the hair cutter also comprises a movable cutter seat, the movable cutter seat is connected with the movable cutter and used for driving the movable cutter to reciprocate, an elastic part is arranged between the movable cutter seat and the fixed cutter seat, and the elastic part has elastic force vertical to the moving direction of the movable cutter and pushes the movable cutter to the fixed cutter.

13. The hair cutter of claim 11, wherein: the hair cutter also comprises a movable cutter support and an elastic part, wherein the movable cutter support is connected with the movable cutter, the elastic part has elastic force perpendicular to the moving direction of the movable cutter, one end of the elastic part is limited by the fixed cutter fixing seat, and the other end of the elastic part compresses the movable cutter.

14. The hair cutter of claim 11, wherein: the hair cutter further comprises a movable cutter support, an elastic part and a fixed part support, the movable cutter support is connected with the movable cutter, the fixed part support is connected with the fixed cutter fixing seat, the elastic part has elastic force perpendicular to the moving direction of the movable cutter, one end of the elastic part is limited by the fixed part support, and the other end of the elastic part compresses the movable cutter.

15. The hair cutter according to claim 14, wherein: the fixing part support is provided with a connecting structure connected with the static knife fixing seat, the static knife fixing seat is provided with an auxiliary connecting structure matched with the connecting structure, and the connecting structure is connected with the auxiliary connecting structure in an inserting or buckling mode.

16. The hair cutter according to any of claims 11 to 15, wherein: the hair cutter also comprises a movable cutter limiting piece which is fixed relative to the movable cutter, and the movable cutter limiting piece is provided with a guide structure for guiding and limiting the movement of the movable cutter.

17. The hair cutter of claim 16, wherein: the movable cutter limiting part is connected with the elastic part or the fixed cutter fixing seat.

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