CN102001099A - Rotary tool bit of electric shaver - Google Patents

Abstract

The invention discloses a rotary tool bit of an electric shaver, comprising outer foil, an outer foil frame, an inner blade assembly, an inner blade bracket, a tool bit floating frame, a cutting spring and a connecting shaft, wherein the outer foil is arranged in the outer foil frame, the inner blade assembly is arranged on the inner blade bracket, the connecting shaft passes through the inner blade bracket and is movably connected with the inner blade assembly, the cutting spring is arranged in the connecting shaft, the side part of the outer foil frame is buckled with the inner blade bracket, the tool bit floating frame is arranged below the inner blade bracket, a guide device which can limit the inner blade bracket to move along a track in the specified distance relative to the tool bit floating frame passes the space between the tool bit floating frame and the inner blade bracket, and an elastic device which facilitates the tool bit floating frame and the inner blade bracket to separate from each other is arranged between the tool bit floating frame and the inner blade bracket. The rotary tool bit of the shaver can float freely up and down and deflect left and right along the facial feature change.

Description

rotary electric shaver head

technical field

The present invention relates to a rotary shaver head.

Background technique

The head of traditional rotary electric razor is fixed on the head holder, which can only float up and down in a small range. The cutting head cannot change the angle with the change of the facial diameter, so that the beard on some parts of the face cannot be effectively cut, and the uneven pressure of the cutting head on the face will cause discomfort to the skin during use.

Contents of the invention

The technical problem to be solved by the present invention is to provide a rotary shaver head that can freely float up and down and deflect left and right as the facial features change.

For this reason, the rotary electric shaver cutter head that the present invention provides comprises outer knife net, outer knife net frame, inner knife assembly, inner knife support, knife head floating frame, cutting spring and connecting shaft, and outer knife net is arranged on the outer In the knife net frame, the inner knife assembly is set on the inner knife bracket, the connecting shaft passes through the inner knife bracket to connect with the inner knife assembly, the cutting spring is set in the connecting shaft, and the outer knife net frame is buckled with the inner knife bracket at the side , the floating frame of the cutter head is arranged below the inner knife bracket, and the guide device that can limit the inner knife bracket to move along the track within a certain distance relative to the floating frame of the cutter head is passed between the floating frame of the cutter head and the inner knife bracket. An elastic device is arranged between the knife supports to promote the separation of the two.

Because each cutter head of the rotary electric shaver cutter head provided by the present invention is independent of each other, a guide device and an elastic device are arranged between the inner cutter bracket and the cutter head floating frame, and the outer cutter net frame of each cutter head and the inner cutter The brackets are interlocked, so the inner knife bracket, the outer knife net frame and the cutter head floating frame can move up and down freely when they are pressed by the shaving part, and the cutting elastic force of the connecting shaft is greater than the supporting force of the two floating arms of the floating spring of the bracket. And the inner knife assembly and the connecting shaft belong to the movable connection, when the external force is at any position on the outer knife net assembly, the blade in the inner knife assembly will deflect slightly to the force-bearing part, and the blade in the inner knife assembly can change the angle arbitrarily , freely floating up and down, to ensure that the blade in the inner knife assembly is always close to the outer knife net and then close to the shaving area, so as to achieve the effect of veneer. The structure of the present invention has the characteristics of simple structure, high shaving efficiency, flexibility and lightness, and comfortable use.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the assembly structure of the rotary electric shaver head provided by the present invention.

Fig. 2 is an exploded schematic diagram of the assembly of the inner knife bracket and the floating bracket of the knife head of the rotary electric shaver head provided by the present invention.

FIG. 3 is an exploded view of the head of the rotary electric shaver in FIG. 1 .

Fig. 4 is a schematic plan view of the structure of the head of the rotary electric shaver provided by the present invention.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the rotary electric shaver head provided by the present invention includes an outer knife net 1, an outer knife net frame 2, an inner knife assembly 3, an inner knife bracket 4, a knife The head floating frame 6, the cutting spring 7 and the connecting shaft 8, the outer knife net 1 is set in the outer knife net frame 2, the inner knife assembly 3 is set on the inner knife bracket 4, and the connecting shaft 8 passes through the inner knife bracket 4 and the inner knife Component 3 is movably connected, the cutting spring 7 is set in the connecting shaft 8, the outer knife net frame 2 is buckled with the inner knife bracket 4 at the side, and the outer knife net frame 2 and the inner knife bracket 4 are connected through two pairs of rotating locks that cooperate with each other A and B are buckled and fixed, and the cutter head floating frame 6 is arranged below the inner knife bracket 4, and the passage between the cutter head floating frame 6 and the inner knife bracket 4 can limit the edge of the inner knife bracket 4 relative to the cutter head floating frame 6 within a certain distance. The guiding device that track moves, is provided with the elastic device that impels both to separate mutually between cutter head floating frame 6 and inner knife support 4.

As shown in Fig. 1, Fig. 2 and Fig. 3, in the above-mentioned embodiment, the guiding device includes the first connecting shaft C and the second connecting shaft D of the inner knife support 4, the limiting groove H on the floating frame 6 of the cutter head and the guide Groove G, the top of the limiting groove H is closed, the upper part of the guide groove G has an outlet, the first connecting shaft C and the second connecting shaft D have an insertion rod 9, and the insertion rod 9 of the first connecting shaft C is inserted into the limiting groove H Inside, the insertion rod 9 of the second connecting shaft D is inserted into the guide groove G, and the lower part of the inner knife support 4 is provided with two first connecting shafts C and two second connecting shafts D, and each first connecting shaft C is correspondingly equipped with One limit slot H, each second connecting shaft D is correspondingly equipped with a guide slot G, the inserting rod 9 of the first connecting shaft C extends inwardly, and the inserting rod 9 of the second connecting shaft D extends outwardly. In this embodiment, after the first connecting shaft C and the two second connecting shafts D are respectively inserted into the limit groove H and the guide groove G, on the one hand, they play a guiding role, so that the inner knife bracket can be reset to the rotation center at any time, and on the other hand On the one hand, because the limit groove H and the guide groove G have a certain stroke, the inner knife support 4 can be tilted at a small angle, which is convenient for the blade to stick to the face and better complete shaving.

As shown in Fig. 1, Fig. 2 and Fig. 3, in the above-mentioned embodiment, the elastic device includes a bracket floating spring 5, which is a kind of torsion spring. The fixed arm J and the two floating arms K, the cutter head floating frame 6 are provided with two positioning shafts F corresponding to the positioning ring E, and the positioning shaft F is provided with an L-shaped positioning rib column I corresponding to the fixed arm J, and the positioning ring E is socketed On the positioning axis F, the fixed arm J is clamped under the positioning rib column I, and a supporting groove L is provided on the inner knife bracket 4 corresponding to the floating arm K, and the floating arm is clamped in the supporting groove L.

Claims (8)

1. A rotary electric shaver cutter head, comprising an outer knife net (1), an outer knife net frame (2), an inner knife assembly (3), an inner knife bracket (4), a knife head floating frame (6), cutting spring (7) and connecting shaft (8), the outer knife net (1) is arranged in the outer knife net frame (2), and the inner knife assembly (3) is arranged on the inner knife support (4). The connecting shaft (8) passes through the inner knife bracket (4) and is flexibly connected with the inner knife assembly (3), and the cutting spring (7) is arranged in the connecting shaft (8), and it is characterized in that: the outer knife net frame (2) The side part is buckled with the inner knife bracket (4), and the knife head floating frame (6) is arranged below the inner knife bracket (4), and the passage between the knife head floating frame (6) and the inner knife bracket (4) can be limited The inner knife bracket (4) is a guiding device that moves along the track within a certain distance relative to the knife head floating frame (6). There is an elastic force between the knife head floating frame (6) and the inner knife bracket (4) to promote the separation of the two. device. 2. The rotary electric shaver head according to claim 1, characterized in that: the guide device includes the first connecting shaft (C) and the second connecting shaft (D) of the inner knife bracket (4), the knife The limit groove (H) and the guide groove (G) on the head floating frame (6), the limit groove (H) is closed above, and the guide groove (G) has an outlet above the first connecting shaft (C) and There is an insertion rod (9) on the second connection shaft (D), the insertion rod (9) of the first connection shaft (C) is inserted into the limiting groove (H), and the insertion rod (9) of the second connection shaft (D) The plunger (9) is inserted into the guide groove (G). 3. The rotary electric shaver head according to claim 1 or 2, characterized in that: the elastic device includes a bracket floating spring (5), and the bracket floating spring (5) includes two positioning rings (E), A fixed arm (J) and two floating arms (K) connecting two locating rings (E), the cutter head floating frame (6) is provided with two locating shafts (F) corresponding to the locating ring (E), and the The fixed arm (J) next to the positioning shaft (F) is provided with an L-shaped positioning rib column (I), the positioning ring (E) is sleeved on the positioning shaft (F), and the fixed arm (J) is stuck on the Under the positioning rib column (I), a supporting groove (L) is arranged on the inner knife support (4) corresponding to the floating arm (K), and the floating arm is stuck in the supporting groove (L). 4. The rotary electric shaver head according to claim 2, characterized in that: two first connecting shafts (C) and two second connecting shafts (D) are provided on the lower part of the inner knife support (4) ), each first connecting shaft (C) is correspondingly configured with a limiting groove (H), and each second connecting shaft (D) is correspondingly configured with a guide groove (G). 5. The rotary electric shaver head according to claim 2 or 4, characterized in that: the insertion rod (9) of the first connecting shaft (C) extends inwardly, and the second connecting shaft (D ) of the plunger (9) extends outwards. 6. The rotary electric shaver head according to claim 1, 2 or 4, characterized in that: the outer knife frame (2) and the inner knife bracket (4) are connected by two pairs of rotating locks that cooperate with each other (A, B) Fasten and fix. 7. The rotary electric shaver head according to claim 3, characterized in that: the outer knife frame (2) and the inner knife bracket (4) are connected through two pairs of rotating locks (A, B) that cooperate with each other. ) snap-fit. 8. The rotary electric razor head according to claim 5, characterized in that: the outer knife frame (2) and the inner knife bracket (4) are connected through two pairs of rotating locks (A, B) that cooperate with each other. ) snap-fit.

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