Moving cutter

Abstract

The moving cutter comprises a moving cutter body extending in the reciprocating length direction, the moving cutter body comprises a trimming portion with a plurality of cutter teeth or slots, at least one long edge side of the trimming portion is connected with a supporting side wall in a bent mode, and on the cross section of the moving cutter body, the long edge end of the trimming portion extends out relative to the supporting side wall. The end of the long edge of the trimming part extends out relative to the supporting side wall, so that the supporting side wall is retracted inwards relative to the trimming part, the distance between the supporting side wall and the inner wall of the static knife net or the inner wall of the static knife holder is increased, the distance space far larger than the thickness of the hair cannot pull the hair, the hair pulling problem is effectively avoided, and the shaving skin feeling is greatly improved. And under the condition that the distribution of a connecting structure is not influenced, the overall supporting force of the movable cutter can be enhanced, meanwhile, the requirement for the curvature of the static cutter is relatively reduced, and a foundation is provided for better matching of the movable cutter and the static cutter.

Description

Technical Field

[0001] The utility model relates to a shaving cutter head, in particular to a moving blade for a reciprocating shaving cutter head. Background Art

[0002] The working mode of a reciprocating electric shaver is to drive the reciprocating movement of a moving blade seat by a motor so that a moving blade cooperates with a static knife net to cut hair and realize the shaving function. There are two existing reciprocating moving blades. One is formed by assembling and inserting several semicircular blades into a moving blade seat. Because it has less ineffective contact surface with the static knife net, it is not easy to form a closed friction surface for pulling hair, and the skin feeling is good. However, its assembly efficiency is low, the production cost is high, the edge of the moving blade is easy to break, and the service life is relatively short. The other is a rigid moving blade with a slotted tooth edge adapted to the shape of the static knife net, that is, the middle of the two vertical support walls of the moving blade is a curved cutting surface in an arch shape. The moving blade is fixedly connected to the moving blade seat through the support walls. The outer periphery of the cutting surface is a closed surface without a cutting edge. A support wall is formed by folding and extending downward from the outer edge of one side of the cutting surface closed surface. To improve the cutting efficiency, the moving blade and the static knife net operate in a close-fitting manner. Therefore, the gap between the two sides of the moving blade and the static knife net or the inner wall of the moving blade seat is very small, and both of them are closed surfaces that are not open, forming a gap space that is very easy to pull hair. Summary of the Invention

[0003] The utility model provides a moving blade that is not easy to pull hair, has high working efficiency, is convenient for process control, and has high use comfort.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: A moving blade includes a moving blade body extending along the reciprocating length direction, characterized in that: the moving blade body includes a trimming part with several knife teeth or slots, and at least a support side wall is bent and connected to one long side of the trimming part. In the cross-section of the moving blade body, the long side end of the trimming part protrudes relative to the support side wall.

[0005] As an improvement: the cross-section of the moving blade body is generally in an inverted U shape, that is, there are support side walls symmetrically and vertically arranged on the front and back sides, the trimming part connected between the support side walls on the front and back sides has several slots, and the distance L between the support side walls on the front and back sides is less than the distance L1 between the front and back ends of the trimming part.

[0006] As an improvement: the moving blade body is integrally formed, and is connected by a bending connection part between the outermost side of the trimming part and the support side wall, that is, the bending connection part is connected to the trimming part at the top and obliquely connected to the support side wall at the bottom. The outer surface at the connection between the bending connection part and the trimming part is an arc surface. In the width direction, the support side wall is closer to the center than the outermost side of the trimming part.

[0007] As an improvement: The cross-section of the trimming part is arched, and at the connection between the bending connection part and the trimming part, the bending connection part and the trimming part are inclinedly connected, and the inclination angle is 90° ≤ a ≤ 150°.

[0008] As an improvement: The cross-section of the trimming part is circular arc-shaped, and at the connection between the bending connection part and the trimming part, the bending connection part and the trimming part are inclinedly connected, and the inclination angle is 90° ≤ a ≤ 150°.

[0009] As an improvement: The cross-section of the moving knife body is generally L-shaped. A plurality of knife teeth are provided on one long side of the trimming part, and it extends obliquely downward in the direction where the knife teeth are provided starting from the other long side of the trimming part to form a bending connection part, and the lower end of the bending connection part continues to bend vertically downward to form a supporting side wall.

[0010] As an improvement: A connection structure for cooperating with and limiting the connection with the moving knife seat is provided on the supporting side wall.

[0011] As an improvement: The moving knife body is integrally formed, and is connected between the outermost side of the trimming part arranged in a plane and the supporting side wall through a folding connection part, that is, the folding connection part is connected to the outermost side of the trimming part and extends inwardly along the lower surface of the trimming part to form a fold, and is bent and connected to the supporting side wall from the inside of the folding connection part. The outer surface at the connection between the folding connection part and the trimming part is an arc surface, and in the width direction, the supporting side wall is closer to the center than the outermost side of the trimming part.

[0012] The beneficial effect provided by the present utility model is that the end of the long side of the trimming part protrudes relative to the supporting side wall, so that the supporting side wall is retracted relative to the trimming part, increasing the distance between the supporting side wall and the static knife net or the inner wall of the static knife seat. The spacing space much larger than the thickness of the hair cannot pull the hair, effectively avoiding the problem of hair pulling, greatly improving the shaving skin feeling, and strengthening the supporting force of the overall moving knife without affecting the distribution of the connection structure. At the same time, the curvature requirement for the static knife is relatively reduced, providing a basis for better cooperation between the moving knife and the static knife.

[0013] The present utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the structure of the knife head with the first embodiment of the moving knife of the present utility model.

[0015] Figure 2 is Figure 1 exploded view of.

[0016] Figure 3 is a cross-sectional view of the first embodiment of the moving knife.

[0017] Figure 4It is a cross-sectional view of the second embodiment of the moving blade.

[0018] Figure 5 It is a cross-sectional view of the third embodiment of the moving blade. Specific embodiments

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed", etc. used in the present invention should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or a welded connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Such as Figure 1 、 Figure 2 、 Figure 3 As shown in, the first embodiment of the moving blade of the present invention. The moving blade in this embodiment is the moving blade in the reciprocating electric shaver blade assembly. It includes a moving blade body extending along the reciprocating length direction. The moving blade body includes a trimming part 12 with a number of slits, and two support side walls respectively bent and connected to the front and rear long side edges of the trimming part. In the cross-section of the moving blade body, the long side ends of the trimming part protrude relative to the support side walls.

[0021] The moving blade body with a generally inverted U-shaped cross-section in this embodiment is integrally stamped and bent from a thin metal plate. The cross-section of the trimming part 12 is arched or circular arc-shaped. The support side walls 11 on the front and rear sides are symmetrically and vertically arranged. The trimming part 12 connected between the support side walls on the front and rear sides has a number of slits. The moving blade body is integrally formed. Between the outermost edge of the trimming part 12 and the support side wall 11, it is connected through a bending connection part 13, that is, the bending connection part is connected to the trimming part at the top and obliquely connected to the support side wall 11 inward at the bottom. The outer surface at the connection between the bending connection part 13 and the trimming part is an arc surface, so that the distance L between the front and rear support side walls 11 is less than the distance L1 between the front and rear ends of the trimming part 12, that is, the support side walls are inwardly retracted. The support side walls are provided with a connection structure 15 for limiting connection and cooperation with the moving blade seat 3.

[0022] For the convenience of processing, the bent connecting portion can be directly stamped during the stamping process of the moving blade. At the connection between the bent connecting portion 13 and the trimming portion, the bent connecting portion 13 and the trimming portion are inclinedly connected, and the inclination angle a is 90° ≤ a ≤ 150°. The inclination angle within this range can take into account both support and processing, without forming sharp edges on the moving blade. Moreover, the processing of this inclination angle has a low impact on the moving blade profile, and can strengthen the straightness of the lateral extension of the entire moving blade made of thin metal, and enhance the support for the trimming portion.

[0023] As Figure 4 As shown in the figure, the second embodiment of the moving blade of the present invention is an L-shaped single-sided moving blade, that is, the cross-section of the moving blade body is generally L-shaped. A plurality of cutter teeth are provided on one long side of the trimming portion. The bent connecting portion is formed by inclining and bending downward from the direction where the cutter teeth are provided on the other long side of the trimming portion. The lower end of the bent connecting portion continues to bend vertically downward to form a support side wall, so that the support side wall is retracted and arranged below the trimming portion 12, increasing the distance between the support side wall and adjacent components, especially the stationary blade 2. The side of the trimming portion is immediately bent and retracted, reducing the possibility of forming a fit with other ineffective cutting surfaces at the end, and effectively avoiding the support side wall from forming a fit with other ineffective cutting surfaces and pulling hair.

[0024] As Figure 5 As shown in the figure, the third embodiment of the moving blade of the present invention is a moving blade with a U-shaped cross-section, which has a trimming surface arranged in a plane. For a moving blade with a trimming portion arranged in a plane, the best solution for stable support and the retraction of the support side wall is folding connection. That is, for the integrated moving blade body, a folding connection portion 14 is connected between the outermost side of the trimming portion 12 arranged in a plane and the support side wall 11. That is, the folding connection portion 14 is folded inward and attached to the lower surface of the trimming portion, and is vertically bent and connected to the support side wall at the inner end of the folding connection portion 14. The outer surface at the connection between the folding connection portion 14 and the trimming portion is an arc surface, realizing the retraction of the support side wall relative to the outermost side of the trimming portion. The implementation of the inner folding structure realizes the retraction of the support side wall, minimizing the possibility of the side end of the trimming surface forming a fit with other ineffective cutting surfaces, and effectively avoiding the support side wall from forming a fit with other ineffective cutting surfaces and pulling hair.

[0025] Although the present invention has been disclosed above with specific embodiments, it is not intended to limit the present invention. Any person skilled in the art can still make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the appended claims.

Claims

1. A movable knife, comprising a movable knife body extending along a reciprocating length direction, characterized in that: The movable knife body comprises a trimming portion (12) with a plurality of teeth or slots, and at least one long side of the trimming portion is bent and connected to a supporting side wall, and in a cross section of the movable knife body, the long side end of the trimming portion protrudes relative to the supporting side wall.

2. The movable knife according to claim 1, characterized in that: The movable blade body has a generally inverted U-shaped cross section, i.e., it has symmetrically upright supporting side walls (11) on both sides, and a trimming portion (12) connected between the supporting side walls on both sides has a plurality of slots, and a distance L between the supporting side walls (11) on both sides is smaller than a distance L1 between the front and rear ends of the trimming portion (12).

3. The movable knife according to claim 2, characterized in that: The movable knife body is integrally formed, and is connected between the outermost edge of the trimming portion (12) and the supporting side wall (11) via a bent connecting portion (13), that is, the bent connecting portion is connected to the trimming portion at the top and is connected to the supporting side wall (11) at an inward angle at the bottom, and the outer surface of the connection between the bent connecting portion (13) and the trimming portion is an arc surface, and in the width direction, the supporting side wall is closer to the center than the outermost edge of the trimming portion.

4. The movable knife according to claim 3, characterized in that: The trimming portion (12) has an arched cross section, and at the connection point between the bent connection portion (13) and the trimming portion, the bent connection portion (13) and the trimming portion are connected in an inclined manner, with an inclination angle of 90°≤a≤150°.

5. The movable knife according to claim 3, characterized in that: The trimming portion (12) has an arc-shaped cross section, and at the connection point between the bent connection portion (13) and the trimming portion, the bent connection portion (13) and the trimming portion are connected in an inclined manner, with an inclination angle of 90°≤a≤150°.

6. The movable knife according to claim 1, characterized in that: The cross-section of the movable knife body is generally L-shaped, with a plurality of teeth on one long side of the trimming portion, and an inclined downward bend extending from the other long side of the trimming portion in the direction of the teeth to form a bent connection portion, and the lower end of the bent connection portion continues to bend vertically downward to form a supporting side wall.

7. The movable knife according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The supporting side wall is provided with a connection structure which is matched with the movable knife seat and is limitedly connected.

8. The movable knife according to claim 2, characterized in that: The movable knife body is integrally formed, and the outermost edge of the trimming portion arranged in a plane is connected to the supporting side wall by a folding connection portion, that is, the folding connection portion is connected to the outermost edge of the trimming portion and extends inwardly to fit the lower surface of the trimming portion to form a fold, and is bent from the inside of the folding connection portion to connect to the supporting side wall. The outer surface of the connection between the folding connection portion and the trimming portion is an arc surface, and in the width direction, the supporting side wall is closer to the center than the outermost edge of the trimming portion.

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