CN212287728U - Fixed cutter bristle feeding structure - Google Patents

Abstract

The utility model discloses a hair structure is advanced to stationary knife, including establishing in the pore of advancing on the left side and/or the right side of stationary knife, adjacent two advance to form between the pore and decide the cutting tooth, advance the pore for the gorge structure of following the outside to inboard indent in the left and right sides orientation, this gorge structure comprises in succession with the smooth curve, and from the outside to the middle part by wide to narrow, from the middle part to inboard by narrow widen again, advance the pore for the gorge structure of following the outside to inboard indent in the left and right sides orientation, both be convenient for advance the hair, can prevent again that the hair from running out, cutting effect is good.

Description

Fixed cutter bristle feeding structure

[ technical field ] A method for producing a semiconductor device

The utility model relates to a stationary knife advances a mao structure.

[ background of the invention ]

Known reciprocating electric razor heads, such as those known from patent publication No. CN204658474U, entitled hair cutting implement and blade set, are generally formed with a straight configuration in the pore-entering configuration and with a chamfer provided at the outer entrance. In order to improve the safety, the hair-entering structure usually needs to make the hair-entering hole as long as possible, so that the outer edge of the hair-entering hole is far away from the entrance of the hair-entering hole, which in turn results in: one is to reduce the structural strength of the fixed cutting teeth on the fixed knife because the fixed cutting teeth are small originally, and the other is to cut the hairs entering from the side surface by a deeper distance, which affects the cutting performance.

The present invention is made based on such a situation.

[ Utility model ] content

An object of the utility model is to overcome prior art's weak point, provide a hair structure is advanced to stationary knife that simple structure, intensity are good, this hair structure is advanced to stationary knife is advanced the hair effectual and can pin the hair that gets into, improves the cutting effect to can extrude the skin that gets into when sliding the hair of scraping, avoid skin to touch and move the sword.

The utility model discloses a realize through following technical scheme:

a hair structure is advanced to stationary knife which characterized in that: the fixed cutter comprises the water inlet holes arranged on the left side and/or the right side of the fixed cutter, and fixed cutting teeth are formed between every two adjacent water inlet holes, the water inlet holes are in an isthmus structure which is inwards concave from the outer side to the inner side in the left-right direction, the isthmus structure is composed of continuous smooth curves, the width is from wide to narrow from the outer side to the middle part, and the width is from narrow to wide from the middle part to the inner side.

The fixed cutter hair feeding structure is characterized in that: the width of the entrance at the outer side of the isthmus structure is L1, the width of the narrowest part of the middle part is L2, the position of the isthmus structure corresponding to the outer edge of the cutting teeth of the moving blade is the initial position generated by cutting, the initial position generated by cutting is positioned at the inner side of the narrowest part of the middle part, and the width of the initial position generated by cutting is L3, so that the following relational expression is satisfied: l1 is more than L3 is more than L2, and L2 is more than or equal to 0.1mm and less than or equal to 0.3 mm.

The fixed cutter hair feeding structure is characterized in that: the depth of the isthmus structure from the narrowest point in the middle to the initial position generated by cutting is L4, the depth from the outer entrance to the initial position generated by cutting is L5, and the following relations are satisfied: l4 is more than or equal to 0.1mm and less than or equal to 1mm, and L5 is more than or equal to 1.2 mm.

The fixed cutter hair feeding structure is characterized in that: the isthmus structure has a depth L4 from the narrowest mid-portion to the initial cut-to-create position and a depth L5 from the outer-side entry to the initial cut-to-create position, which satisfy the following relationships: l4 is more than or equal to 0.2mm and less than or equal to 0.4mm, and L5 is more than or equal to 1.0 mm.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses advance the pore for the gorge structure of the inboard indent in the left and right sides orientation from the outside, this gorge structure comprises in succession smooth curve, and from the outside to the middle part by wide to narrow, from the middle part to the inboard narrow widen again, the hair of both being convenient for advance can prevent again that the hair from running away, and cutting effect is good, decides cutting tooth structural strength good.

2. In the utility model, the width of the inlet at the outer side is L1, the width of the narrowest part of the middle part is L2, and the corresponding cutting teeth are positioned at the inner side of the narrowest part; the initial position of the cutting of the isthmus structure, that is, the position of the isthmus structure at the outer edge of the corresponding cutting tooth, the width of the initial position of the cutting is L3, the depth from the narrowest point of the middle part to the outer edge of the corresponding cutting tooth is L4, and the depth from the outer entrance to the outer edge of the corresponding cutting tooth is L5, which satisfies the following relation: l1 is more than L3 is more than L2, L2 is more than or equal to 0.1mm and less than or equal to 0.3mm, L4 is more than or equal to 0.1mm and less than or equal to 1mm, L5 is more than or equal to 1.2mm, L4 is more than or equal to 0.4mm within the preferred range, and L5 is less than or equal to 1.0mm, so that the hair can be conveniently fed into the hair feeding hole, the hair can be prevented from running out after entering the hair, a good cutting effect is achieved, meanwhile, meat can be squeezed out from a narrow place during moving cutting, the moving knife which moves at a high speed at the initial position generated by skin contact cutting is prevented, meanwhile, the depth of the gorge structure is convenient to control, and the structural strength of the fixed.

[ description of the drawings ]

FIG. 1 is a schematic structural view of a fixed-blade bristle feeding structure of the present invention;

FIG. 2 is an exploded view of a reciprocating razor cartridge;

FIG. 3 is a top view of a reciprocating razor cartridge;

FIG. 4 is a cross-sectional view of a cutting insert with a top surface having a cambered surface configuration taken along the direction A-A in FIG. 3;

fig. 5 is a sectional view of a tool tip having a planar configuration on its top surface, taken along the direction a-a in fig. 3.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

the hair feeding structure of the stationary knife comprises hair feeding holes 11 arranged on the left side and the right side of the stationary knife 1, stationary cutting teeth 12 are formed between every two adjacent hair feeding holes 11, each hair feeding hole 11 is an isthmus structure which is inwards concave from the outer side to the inner side in the left-right direction, each isthmus structure is composed of continuous smooth curves, the width is from wide to narrow from the outer side to the middle part, the width is from narrow to wide from the middle part to the inner side, the outer width is favorable for guiding hairs in, the hairs can be locked after entering the inner side from the narrow part in the middle part, a good cutting effect is achieved, and the structural strength of the stationary cutting teeth 12 is good.

The width of the entrance at the outer side of the isthmus structure is L1, the width of the narrowest part of the middle part is L2, the position of the isthmus structure corresponding to the outer edge of the cutting teeth 31 of the moving blade is the initial position generated by cutting, the initial position generated by cutting is positioned at the inner side of the narrowest part of the middle part, and the width of the initial position generated by cutting is L3, so that the following relational expression is satisfied: l1, L3, L2 and L2 are respectively in a range of 0.1mm to 0.3mm, the inlet is wide, so that hairs can be fed conveniently, the middle part is narrow, the inner side is wide, the hairs can be prevented from running out after entering, meanwhile, meat entering from the inlet at the outer side can be squeezed out at the narrow part during moving cutting, and the moving knife moving at a high speed at the initial position generated by skin contact cutting is prevented.

As shown in figure 1, the depth of the isthmus structure from the narrowest part of the middle part to the initial position generated by cutting is L4, and L4 is more than or equal to 0.1mm and less than or equal to 1mm, so that when a part of the skin deformed under extrusion protrudes inwards from the narrowest part of the middle part, the cutting teeth 31 cut the skin, the preferable range is more than or equal to 0.2mm and less than or equal to L4 and less than or equal to 0.4mm, the isthmus structure not only plays a role in safety protection, but also can well ensure that hair is cut; the depth of the isthmus structure from the outer side inlet to the initial position generated by cutting is L5, L5 is less than or equal to 1.2mm, and the optimal range L5 is less than or equal to 1.0mm, so that the hair entering depth is ensured, the hair is guided into the cutting, the depth of the isthmus structure is conveniently controlled, and the structural strength of the fixed cutting teeth 12 is ensured.

As shown in fig. 1 to 5, the reciprocating razor head of the fixed knife hair feeding structure applying the present invention comprises a fixed knife 1 and a fixed knife holder 2 for supporting and fixing the fixed knife 1, wherein the fixed knife 1 is a flexible metal sheet having flexibility, the fixed knife holder 2 is a basin-shaped support, the fixed knife 1 is supported by a basin mouth edge of the fixed knife holder 2, the periphery of the fixed knife 1 is bent downwards to wrap the outside of the basin wall around the fixed knife holder 2 and enable the top surface of the fixed knife 1 to smoothly transit with the side surface close to the top surface, a cutting inner cavity 10 is formed between the fixed knife 1 and the fixed knife holder 2, hair feeding holes 11 for feeding body hair into the cutting inner cavity 10 are formed in the fixed knife 1, fixed cutting teeth 12 are formed between two adjacent hair feeding holes 11, a movable knife 3 capable of reciprocating forward and backward relative to the fixed knife 1 and cutting the hair feeding holes 11 is arranged below the fixed knife 1 in the cutting inner cavity 10, the moving blade 3 is provided with cutting teeth 31 which correspond to the hair inlet holes 11 and are used for cutting body hair, and the reciprocating razor head also comprises a transmission part 4 which penetrates through the bottom of the fixed blade holder 2 and connects the moving blade 3 with a power device of the electric razor.

Because the fixed knife 1 is a flexible metal sheet, the fixed knife 1 can be stretched towards the periphery by utilizing the flexibility and toughness of the flexible metal sheet through the support of the peripheral basin wall of the fixed knife rest 2, the periphery of the fixed knife 1 is bent downwards, tensioned and adhered to the outer side of the peripheral basin wall of the fixed knife rest 2 under the action of certain external force, the fixed knife 1 is tightly fixed on the basin wall of the fixed knife rest 2 through welding or riveting, the top surface and the side surface close to the top surface of the fixed knife 1 are in smooth transition, the upper end and the basin mouth of the fixed knife rest 2 are wrapped from top to bottom to form a structure similar to a leather drum, and the top surface and the side surface of the fixed knife 1 are the top surface and the side surface of the razor head, smooth and neat and skin-adhered. When the shaver head cuts hair, the top surface, the side surface close to the top surface, or both the top surface and the side surface of the fixed cutter 1 are attached to the skin to move, the cutting surface can be attached to the skin in an omnibearing manner to cut, the cutting effect is good, some concave parts of a body can be cut conveniently, and the top surface, the side surface close to the top surface, or both the top surface and the side surface of the fixed cutter 1 in smooth transition with the contact surface of the skin are in contact with the skin simultaneously, so that the shaver head can slide on the surface of the skin smoothly, and the shaving comfort is good.

In addition, the fixed cutter 1 and the fixed cutter frame 2 form a structure similar to a leather drum, the fixed cutter frame 2 is a drum body, the fixed cutter 1 is a tensioned drum skin covered on the drum body, and the fixed cutter 1 is tightened on the fixed cutter frame 2 due to the principle that the drum skin of the leather drum has pretension force, so that the fixed cutter 1 can obtain a very flat cutting working surface in contact with the movable cutter 3 on the premise of not needing extra precision machining, the process is simple, the machining is convenient, and the manufacturing cost of parts is low; in addition, the rigidity requirement of the fixed cutter 1 is avoided, the thickness of the fixed cutter 1 can be ultrathin, which cannot be realized by other process structures, the thickness h of the fixed cutter 1 can be in the range of 0< h <0.08mm, so that the influence of the thickness of the fixed cutter 1 can be ignored during shaving, and the body hair can be cut cleanly at one time.

The round corners 22 which enable the left and right basin walls and the front and rear basin walls to be in smooth transition connection are arranged between the left and right basin walls and the front and rear basin walls of the fixed knife rest 2, so that the fixed knife 1 can be conveniently bent and coated downwards, the peripheral circular arcs of the fixed knife 1 are enabled to be in transition, and the cutting comfort is improved.

The hair inlet holes 11 can be uniformly formed in the left side of the fixed cutter 1, the right side of the fixed cutter 1 and the left side and the right side of the fixed cutter 1, hair inlet grooves 21 which correspond to the hair inlet holes 11 and can supply hairs to enter and exit the cutting inner cavity 10 are formed in the left basin wall and the right basin wall of the fixed cutter frame 2, the hairs can be fed through the hair inlet grooves 21, and after shaving is completed, the hairs can be cleared and fall off by a user. Of course, the stationary blade holder 2 may be further provided with hair dropping holes 23 for cutting off hairs falling out of the cutting cavity 10, so as to clean the hairs more conveniently.

The top surface and the left and right side surfaces of the fixed cutter 1 form acute angles respectively, a chamfer R1 in smooth transition is formed between the top surface and the left and right side surfaces, the height D of the chamfer R1 is less than 1.0mm, the hair guiding and entering effect is good, and the cutting effect is improved.

The left and right pot walls and the front and rear pot walls of the fixed knife rest 2 are equal in height at the pot opening, the top surface of the fixed knife 1 is a plane, and the top surface of the movable knife 3 is a plane matched with the bottom surface of the fixed knife 1, so that plane cutting is realized, as shown in fig. 5.

Of course, as shown in fig. 4, the front and rear pot walls of the stationary knife holder 2 can also be higher than the left and right pot walls, the top of the front and rear pot walls is of an arc structure and is in smooth transition with the left and right pot walls, the top surface of the stationary knife 1 is an arc surface corresponding to the front and rear pot walls, and the top surface of the movable knife 3 is an arc surface matched with the bottom surface of the stationary knife 1, so that arc surface cutting is realized.

The transmission part 4 comprises a movable blade bracket 41 fixedly connected with the movable blade 3 and a driving seat 42 connected with a power device of the electric shaver, an elastic pressing piece 5 capable of pressing the movable blade 3 on the fixed blade 1 is arranged between the movable blade 3 and the fixed blade bracket 2, and the movable blade 3 is pressed upwards through the elastic pressing piece 5, so that the movable blade 3 and the fixed blade 1 are tightly attached to form a pre-pressure force, and the sharpness of the body hair cut by the reciprocating shaver head is ensured.

The bottom of the fixed cutter frame 2 is fixed with a sliding support block 6 for supporting the movable cutter bracket 41 and guiding the movable cutter bracket 41 to reciprocate back and forth, and the sliding support block 6 can be fixed on the fixed cutter frame 2 in an integral injection molding mode with the fixed cutter frame 2.

The fixed knife 1 and the fixed knife rest 2 are made of weldable metal materials, so that the side surface of the fixed knife 1 bent downwards from the periphery is welded on the peripheral basin wall of the fixed knife rest 2.

The fixed knife rest 2 is of a basin-shaped structure with a large basin opening and a small basin bottom, and the basin wall around the fixed knife rest 2 retracts from top to bottom inwards by taking the basin opening as a base point, so that the edge of the fixed knife 1 retracts into the inner side below the top of the razor head after being fixed on the basin wall, and the skin is prevented from being contacted.

In manufacturing the reciprocating razor head described above, the steps of:

A. a fixed knife 1 in an unfolded state and a fixed knife rest 2 in a basin-shaped structure are manufactured according to design;

B. the movable knife 3 is connected with the transmission component 4 and is arranged in the fixed knife rest 2, wherein the movable knife 3 is fixedly connected with the movable knife bracket 41 and then is put into the fixed knife rest 2 from the basin mouth, and the driving seat 42 is connected with the movable knife bracket 41 from a through hole on the basin bottom of the fixed knife rest 2 and then is arranged below the bottom of the fixed knife rest 2;

C. stretch stationary knife 1 to all around to the basin mouth edge of stationary knife rest 2 is for supporting, buckle, take-up, paste stationary knife 1 all around down under certain exogenic action on the basin wall outside around stationary knife rest 2, and through welding or riveting with stationary knife 1 tight fix on the basin wall of stationary knife rest 2, make the top surface of stationary knife 1 and the side rounding off that is close to the top surface, wrap up the upper end of stationary knife rest 2 and basin mouth from last down, form the leather drum structure.

In order to make the movable knife 3 and the fixed knife 1 tightly contact to form pre-pressure and improve the cutting sharpness, in the step B, an elastic pressing piece 5 is arranged in the fixed knife rest 2 and is arranged below the movable knife 3, and the movable knife 3 is elastically jacked up above the pot mouth of the fixed knife rest 2 through the elastic pressing piece 5. In the step C, when the stationary knife 1 is wrapped on the pot opening of the stationary knife holder 2, and the stationary knife 1 is bent, tightened and tightened on the pot wall of the stationary knife holder 2, the inner side of the stationary knife 1 presses the movable knife 3 downward against the movable knife 3, and pre-pressure is formed between the movable knife 3 and the stationary knife 1.

The manufacturing method has simple process and low manufacturing cost, the top surface of the razor head and the side surface close to the top surface are formed by stretching and then wrapping the whole fixed cutter, the razor head is smooth and neat, the skin sticking performance is good, the requirement on higher rigidity of the fixed cutter 1 is avoided, the thickness of the fixed cutter 1 can be ultrathin which can not be realized by other process structures, the influence of the thickness of the fixed cutter 1 can be ignored during shaving, and the body hair can be cut cleanly at one time.

Claims (4)

1. A hair structure is advanced to stationary knife which characterized in that: the fixed cutter comprises a hole (11) arranged on the left side and/or the right side of the fixed cutter (1), a fixed cutting tooth (12) is formed between every two adjacent holes (11), the hole (11) is an isthmus structure which is inwards concave from the outer side to the inner side in the left-right direction, the isthmus structure consists of continuous smooth curves, the width is from the outer side to the middle part, and the width is from the middle part to the inner side.

2. The stationary knife hair feeding structure according to claim 1, wherein: the width of the entrance at the outer side of the isthmus structure is L1, the width of the narrowest part of the middle part is L2, the position of the isthmus structure corresponding to the outer edge of the cutting teeth (31) of the movable knife is the initial position generated by cutting, the initial position generated by cutting is positioned at the inner side of the narrowest part of the middle part, and the width of the initial position generated by cutting is L3, so that the following relational expression is satisfied: l1 is more than L3 is more than L2, and L2 is more than or equal to 0.1mm and less than or equal to 0.3 mm.

3. The stationary knife hair feeding structure according to claim 2, wherein: the depth of the isthmus structure from the narrowest point in the middle to the initial position generated by cutting is L4, the depth from the outer entrance to the initial position generated by cutting is L5, and the following relations are satisfied: l4 is more than or equal to 0.1mm and less than or equal to 1mm, and L5 is more than or equal to 1.2 mm.

4. The stationary knife hair feeding structure according to claim 3, wherein: the isthmus structure has a depth L4 from the narrowest mid-portion to the initial cut-to-create position and a depth L5 from the outer-side entry to the initial cut-to-create position, which satisfy the following relationships: l4 is more than or equal to 0.2mm and less than or equal to 0.4mm, and L5 is more than or equal to 1.0 mm.

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