Reciprocating electric shaver

Abstract

This solution provides a reciprocating electric shaver, which includes an outer knife net fixed on a first fixing frame and having a number of pores for hair entry, and an inner knife head. The inner knife head is installed on an inner knife seat. The center of the lower part of the inner knife seat is provided with a driving element. An elastic support member integrally formed by an elastic sheet material is installed below the inner knife seat. The elastic support member sequentially includes a central body, a sunken part vertically sunken from both ends of the central body, an inclined arm bent obliquely upward, and a horizontal shoulder surface at both ends with a convex portion in contact and cooperation with the lower bottom surface of the inner knife seat. A guiding through hole for the driving element to pass through and be guided is opened at the center of the central body. The driving element makes a reciprocating movement with limited position in the guiding through hole. Since the structures on both sides of the central body play a role in buffering and shock absorption, and the two relatively independent elastic structures greatly improve the buffering and shock absorption effect.

Description

Technical Field

[0001] The present invention relates to an electric shaver, and more particularly to a reciprocating electric shaver. Background Art

[0002] In the shaver industry, the cutter head with side knives and a middle knife has an up-and-down assembly structure. Generally, it is a floating whole cutter head, that is, it is realized by using a compression spring or an elastic member at the bottom of the cutter head. The adjustability is poor. After long-term use, the inner knife and the outer knife cannot always be in close contact. There will be phenomena such as beard pulling or poor shaving effect. The overall height of the cutter head cannot be compressed, the inertia of the reciprocating motion is large, and the whole shaver vibrates greatly. When shaving, the vibration brings a bad shaving experience to consumers. Summary of the Invention

[0003] The present invention provides a reciprocating electric shaver with low noise, high efficiency and stability, and a simple and reliable structure.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: It includes a housing, a first fixing frame connected to the housing, and a first cutter head group installed on the first fixing frame. Third elastic bodies for making the first cutter head group float up and down are provided at the lower bottoms of both ends of the first fixing frame. The first cutter head group includes, from top to bottom, an outer cutter net fixed on the first fixing frame and having a plurality of hair inlet holes, an inner cutter head, an inner cutter seat, and an elastic support member integrally formed by an elastic sheet material. A driving part is provided at the center of the lower part of the inner cutter seat. The elastic support member includes, from the center to both ends in sequence, a central body fixedly supported and connected to the cross rib of the first fixing frame, a sinking part vertically sinking from both ends of the central body respectively, an inclined warping arm bent obliquely upward, and horizontal shoulder surfaces at both ends and having protrusions in contact and cooperation with the lower bottom surface of the inner cutter seat. The cross rib is stuck in the two sinking parts to form a moving cutter space, so that the elastic support member is horizontally limited on the first fixing frame. The two horizontal shoulder surfaces are in the same horizontal plane as the central body in the free state. The supporting fulcrum of the elastic support member for the inner cutter seat is below the height of the plane where the central body is located. A guiding through hole for the driving part to pass through and be guided is opened at the center of the central body. The driving part makes a reciprocating motion with limitation in the guiding through hole.

[0005] As an improvement: A second fixing frame and a second cutter head group installed on the second fixing frame are further provided in the housing. The second cutter head group includes a second fixed cutter having a plurality of fixed cutter teeth extending outward, and a second moving cutter having a plurality of moving cutter teeth extending outward. The shearing surfaces of the moving cutter teeth are in contact with the shearing surfaces of the fixed cutter teeth. The moving cutter teeth make a reciprocating motion relative to the fixed cutter teeth to shear hair. The ends of the fixed cutter teeth of the second fixed cutter are arc ends. A through hole for the driving part to pass through is provided on the body of the second fixed cutter.

[0006] As an improvement: The bottom card slot of the second moving cutter is connected to the second moving cutter seat. At both ends of the bottom of the second moving cutter seat, second elastic members are respectively provided. At the center of the upper surface of the second moving cutter seat, a transmission head cooperating with the driving member is provided, and at the center of the lower surface of the second moving cutter seat, a second driving member cooperating with the eccentric shaft drive is provided.

[0007] As an improvement: On the front and rear hole edges of the guiding through hole of the central body, two inner lower folding lugs formed by downward stamping or direct injection molding are respectively provided. On the front and rear outer walls of the driving member, convex ribs abutting against the inner lower folding lugs are provided, and the top ends of the convex ribs are arc surfaces.

[0008] As an improvement: The top of the protrusion is an arc surface.

[0009] The beneficial effects provided by the present invention are as follows: First, since an independent elastic support member is provided in the first cutter head group, an upward pushing force is exerted on the inner cutter head, which can automatically compensate and adjust the fitting degree of the inner cutter head to the outer cutter net, enabling the two to always be closely adhered and cooperate, prolonging the service life of the cutter head, and improving the shaving efficiency. Second, the entire first cutter head group is installed on the first fixing frame, making the first cutter head group form a relatively independent cutter head group, which is very convenient for disassembly, replacement, maintenance, etc., and the structure is modular. Third, compared with the U-shaped elastic member in the existing shaver, the central body and the sinking part of the elastic support member of the present invention form a structure for supporting and limiting the elastic support member on the first housing, and the two side elastic functional shoulders, namely the inclined warping arms and the horizontal shoulder surfaces, form a fitting compensation structure. The unique structure also has and realizes that after the elastic support member cooperates with the inner cutter head, the support fulcrum of the elastic support member on the inner cutter seat is below the height of the plane where the central body is located, so that reducing the height of the support point can greatly reduce the inertial influence of the reciprocating motion, reduce the vibration of the whole machine, avoid the phenomenon of head shaking, and have a significant damping effect, improving the comfort of the user experience. And the height of the entire elastic support member is greatly reduced. Third, the elastic support member has a small friction surface with the inner cutter head through the protrusion, and the relative movement is smoother, and the required current loss is very small, effectively avoiding the problems of high temperature rise and high noise.

[0010] The present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of an embodiment of a reciprocating electric shaver provided by the present invention.

[0012] Figure 2 It is a schematic structural diagram of the bottom of the first cutter head group.

[0013] Figure 3 It is an exploded structural diagram after removing the housing.

[0014] Figure 4 It isFigure 2 Schematic diagram of the structure of the elastic support and the inner tool holder. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium. 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.

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an embodiment of a reciprocating electric shaver of the present invention comprises a shell 1, a first fixing frame 2 connected to the shell 1, a first cutter head group mounted on the first fixing frame 2, a second fixing frame and a second cutter head group mounted on the second fixing frame, third elastic bodies 9 are provided at the lower bottoms of both ends of the first fixing frame 2 to enable the first cutter head group to float up and down, and the first cutter head group as a whole is realized by the third elastic bodies 9 below both sides of the first fixing frame 2.

[0017] The first cutter head group includes, from top to bottom, an outer cutter net 11 fixed on the first fixing frame 2 and having a plurality of pores, an inner cutter head 12, an inner cutter seat 13, and an elastic support member 15 integrally formed from an elastic sheet. The inner cutter head 12 is mounted on the inner cutter seat 13. A driver 14 is provided at the lower center of the inner cutter seat 13. An elastic support member 15 integrally formed from an elastic sheet is installed below the inner cutter seat 13. The elastic support member 15 of this embodiment is made of metal spring sheets to increase service life and wear resistance. The elastic support member 15 includes, from the center to the two ends, a central body 151 fixedly supported and connected to the cross rib 8 of the first fixing frame 2, a sinking part 152 vertically sunken from the two ends of the central body 151, an inclined arm 153 bent obliquely upward, and a horizontal shoulder surface 154 at both ends with a protrusion 155 abutting against the lower bottom surface of the inner knife seat 13. The cross rib 8 is stuck in the two sinking parts 152 to form a moving knife space, so that the elastic support member 15 is horizontally limited on the first fixing frame 2.

[0018] The top of the protrusion 155 is an arc surface, so that the friction surface between the protrusion 155 and the inner cutter head is only the vertex of the protrusion, which is a point contact. The required current is small, effectively avoiding the problems of high temperature rise and high noise. The distance between the two protrusions 155 is smaller than the transverse length of the inner moving cutter and the moving cutter seat. The two horizontal shoulder surfaces 154 are in the same horizontal plane as the central body 151 in the free state. The supporting fulcrum of the elastic support 15 for the inner cutter seat 13 is below the height of the plane where the central body 151 is located. Reducing the height of the support point can greatly reduce the inertial influence of the reciprocating motion, avoid the phenomenon of head shaking, and the damping effect is remarkable. A guiding through hole 156 for the driving member 14 to pass through and be guided is opened in the center of the central body 151. The driving member 14 makes a reciprocating motion with limited position in the guiding through hole 156. On the front and rear hole edges of the guiding through hole 156 of the central body 151, there are respectively two downwardly punched or directly injection-molded inner lower folding lugs 157. On the front and rear outer walls of the driving member 14, there are convex ribs 141 that abut against the inner lower folding lugs 157, and the top of the convex rib 141 is an arc surface. The convex ribs 141 greatly reduce the external frictional resistance when the driving member 14 reciprocates, thereby reducing the current required by the driving motor, and at the same time greatly reducing the temperature rise and noise.

[0019] The second cutter head group includes a second fixed cutter 21 provided with a plurality of fixed cutter teeth extending outwardly, and a second moving cutter 22 provided with a plurality of moving cutter teeth extending outwardly. The shearing surfaces of the moving cutter teeth abut against the shearing surfaces of the fixed cutter teeth. The moving cutter teeth make a reciprocating motion relative to the fixed cutter teeth to shear hair. The end of the fixed cutter teeth of the second fixed cutter is an arc end. A through hole 211 for the driving member 14 to pass through is provided on the body of the second fixed cutter 21. The structure is simple and the assembly and processing are convenient. The bottom of the second moving cutter 22 is connected to the second moving cutter seat 23 by a card slot. At both ends of the bottom of the second moving cutter seat 23, there are respectively second elastic members 24. At the center of the upper surface of the second moving cutter seat 23, there is a transmission head 231 that cooperates with the driving member 14. At the center of the lower surface of the second moving cutter seat 23, there is a second driving member 232 that cooperates with the driving of the eccentric shaft. Of course, the second cutter head group can also adopt other forms of cutter head groups. Since it is relatively independent of the first cutter head group and the drive is also a hierarchical drive, the compatibility scale for the second cutter head group is very large. Of course, the first cutter head group can also exist alone.

[0020] 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 reciprocating electric shaver, comprising a housing (1), a first fixing frame (2) connected to the housing (1), and a first cutter head group mounted on the first fixing frame (2). The lower bottom ends of both ends of the first fixing frame (2) are provided with third elastic bodies (9) for making the first cutter head group float up and down, and it is characterized in that: The first cutter head group described above sequentially includes, from top to bottom, an outer cutter net (11) fixedly mounted on a first fixing frame (2) and having a plurality of inlet pores, an inner cutter head (12), an inner cutter seat (13), and an elastic support member (15) integrally formed by an elastic sheet material. The lower center of the inner cutter seat (13) is provided with a driving member (14). The elastic support member (15) sequentially includes, from the center to both ends, a central body (151) fixedly supported and connected to the cross ribs (8) of the first fixing frame (2), a sinking portion (152) vertically sinking from both ends of the central body (151), an inclined warping arm (153) bent obliquely upward, and a horizontal shoulder surface (154) located at both ends. A protrusion (155) for abutting and cooperating with the lower bottom surface of the inner cutter seat (13) is provided on the horizontal shoulder surface (154). The cross rib (8) is stuck in the moving cutter space formed by the two sinking portions (152), so that the elastic support member (15) is laterally limited on the first fixing frame (2). The two horizontal shoulder surfaces (154) are in the same horizontal plane as the central body (151) in a free state. The supporting fulcrum of the elastic support member (15) for the inner cutter seat (13) is below the height of the plane where the central body (151) is located. A guiding through hole (156) for the driving member (14) to pass through and be guided is opened in the center of the central body (151). The driving member (14) makes a reciprocating motion with limitation in the guiding through hole (156).

2. The reciprocating electric shaver according to claim 1, characterized in that: A second fixing frame and a second cutter head group mounted on the second fixing frame are further provided in the housing (1). The second cutter head group includes a second fixed cutter (21) provided with a plurality of fixed cutter teeth extending outwardly, and a second moving cutter (22) provided with a plurality of moving cutter teeth extending outwardly. The shearing surfaces of the moving cutter teeth are abutted against the shearing surfaces of the fixed cutter teeth. The moving cutter teeth make a reciprocating motion relative to the fixed cutter teeth to shear hair. The ends of the fixed cutter teeth of the second fixed cutter are arc ends. A through hole (211) for the driving member (14) to pass through is provided on the body of the second fixed cutter (21).

3. The reciprocating electric shaver according to claim 2, characterized in that: The bottom of the second moving cutter (22) is connected to a second moving cutter seat (23) by a card slot. Second elastic members (24) are respectively provided at both ends of the bottom of the second moving cutter seat (23). A transmission head (231) for cooperating with the driving member (14) is provided at the center of the upper surface of the second moving cutter seat (23). A second driving member (232) for cooperating with the driving of the eccentric shaft is provided at the center of the lower surface of the second moving cutter seat (23).

4. The reciprocating electric shaver according to claim 1 or 2 or 3, characterized in that: Two inner lower folding lugs (157) formed by downward stamping or direct injection molding are respectively provided on the front and rear hole edges of the guiding through hole (156) of the central body (151). Convex ribs (141) for abutting against the inner lower folding lugs (157) are provided on the front and rear outer walls of the driving member (14). The top of the convex rib (141) is an arc surface.

5. The reciprocating electric shaver according to claim 1 or 2 or 3, characterized in that: The top of the protrusion (155) is an arc surface.

6. The reciprocating electric shaver according to claim 4, characterized in that: The top of the protrusion (155) is an arc surface.

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