CN216913918U

CN216913918U - Reciprocating electric shaver

Info

Publication number: CN216913918U
Application number: CN202220214058.6U
Authority: CN
Inventors: 金炳杰
Original assignee: Zhejiang Jingbo Hardware Technology Co ltd
Current assignee: Zhejiang Jingbo Hardware Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-07-08
Anticipated expiration: 2032-01-26

Abstract

The scheme provides a reciprocating electric shaver, which comprises a cutting knife group consisting of an outer knife and an inner knife in sliding contact with the inner surface of the outer knife, a motor and a vibrating piece for driving the inner knife to reciprocate leftwards and rightwards, wherein a power conversion mechanism for converting the rotating force of the motor into reciprocating power is arranged between the vibrating piece and the motor, the power conversion mechanism comprises an eccentric wheel which is arranged on an output shaft of the motor and is provided with an eccentric shaft, and a driving element which is directly or indirectly connected onto the vibrating piece, the lower part of the driving element made of a micro-elastic material is provided with a matching groove in interference flexible fit with the eccentric shaft, and the damping between the matching wall on the left side and the right side of the matching groove of the driving element and the eccentric shaft is greater than the friction damping in the cutting knife group, so that the power conversion is realized and the reciprocating power is output to drive the vibrating piece. The driving element is in interference flexible fit with the eccentric shaft, and even if the driving element is worn after being used for a long time, the driving element can automatically give compensation, so that the driving element and the eccentric shaft can always keep a zero-matching state, and the problems of loose matching and noise are effectively solved.

Description

Reciprocating electric shaver

Technical Field

The present invention relates to an electric shaver, and more particularly to a driving system for a reciprocating electric shaver.

Background

In the industry of shavers, a driving unit is one of the most important parts, the driving unit is mainly used for driving a shaver head and transmitting power, the structure is simple, the power transmission is direct, the existing eccentric wheel and the driving unit are both made of rigid materials, and the eccentric wheel and the driving unit are in rigid matching. When the motor power is too large, the skin feeling of the user is not good, when the motor power is too small, the user can die due to too large required current, the power consumption is too large, and the torque requirement on the motor is very high. Moreover after long-term use the eccentric wheel can wear with the driver, can't realize zero cooperation relation, and the power and the operating efficiency that not only can the loud noise also can influence the tool bit appear.

Disclosure of Invention

The utility model provides a reciprocating electric shaver with low noise, high efficiency, stability, reliability and long service life.

In order to solve the technical problem, the utility model adopts the following technical scheme: a reciprocating electric shaver comprises a cutting knife group consisting of an outer knife and an inner knife in sliding contact with the inner surface of the outer knife, a motor and a vibrating piece for driving the inner knife to reciprocate left and right, wherein a power conversion mechanism for converting the rotating force of the motor into reciprocating power is arranged between the vibrating piece and the motor, the power conversion mechanism comprises an eccentric wheel arranged on an output shaft of the motor and provided with an eccentric shaft and a driving element directly or indirectly connected to the vibrating piece, the lower part of the driving element made of a micro-elastic material is provided with a matching groove in interference flexible fit with the eccentric shaft, and the damping between the matching wall on the left side and the right side of the matching groove of the driving element and the eccentric shaft is greater than the friction damping between the inner knife and the outer knife in the cutting knife group, so that the power conversion is realized and the reciprocating power is output to drive the vibrating piece.

As an improvement: the eccentric shaft is cylindrical, the lower part of the driving element is provided with a left matching groove and a right matching groove which are symmetrical, and the matching walls on the left side and the right side of the matching grooves are C-shaped and reverse C-shaped, so that the matching grooves and the eccentric shaft are connected in a point contact manner in a matching mode.

As an improvement: the head of the eccentric shaft is spherical, the lower part of the driving element is provided with a matching groove which is matched with the head of the eccentric shaft in a clamping ball way and is symmetrical left and right, and the matching walls on the left side and the right side of the matching groove are vertical clamping walls, so that the matching groove is in point contact with the eccentric shaft.

As an improvement: the matching groove is a through groove with an open front and back, namely the matching groove is directly formed by the matching walls on the left side and the right side.

As an improvement: and two connecting arms fixedly connected with the lower part of the vibrating piece are arranged above the driving piece, and the two connecting arms are V-shaped below the vibrating piece.

As an improvement: the vibrating piece comprises a vibrating frame which is driven to reciprocate by power conversion output reciprocating power of a power conversion mechanism, and elastic bending parts which are arranged on two sides of the vibrating frame and can support the vibrating frame to reciprocate.

The beneficial effects provided by the utility model are as follows: because the driving element matched with the eccentric shaft is made of a micro-elastic material, the driving element is in interference flexible fit with the eccentric shaft, and even if the driving element is worn after being used for a long time, the driving element can automatically provide compensation, so that the driving element and the eccentric shaft can always keep a zero-matching state, and the problems of loose matching and noise are effectively solved.

The utility model is described in further detail below with reference to the figures and examples.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a reciprocating electric shaver provided by the utility model.

Fig. 2 is a schematic structural diagram of a second embodiment of a reciprocating electric shaver provided by the utility model.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used in a broad sense, and for example, the terms "connected," "connected," and "fixed" may be fixed, detachable, or integrated; may be directly connected or indirectly connected through an intermediate. Unless explicitly defined otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2, a first embodiment of the reciprocating electric shaver according to the present invention comprises a cutter unit including an outer cutter and an inner cutter slidably contacting along an inner surface of the outer cutter, a motor, and a vibrator 4 for driving the inner cutter to reciprocate left and right, wherein a power conversion mechanism for converting a rotational force of the motor into a reciprocating power is provided between the vibrator 4 and the motor 1,

the power transformation mechanism comprises an eccentric wheel 2 which is arranged on an output shaft 11 of the motor and is provided with an eccentric shaft 21, a driving element 3 which is directly connected and connected with the vibrating element, and a matching groove 31 which is in interference fit with the eccentric shaft 21 and is in flexible fit with the lower part of the driving element 3 made of a micro-elastic material. The damping between the matching walls 311 on the left and right sides of the driving sub matching groove 31 and the eccentric shaft 21 is larger than the friction damping between the inner cutter and the outer cutter in the cutting cutter set, so that the power conversion is realized, and the reciprocating power is output to drive the vibrating piece. The required current is small, the current fluctuation is also small, and the power is stable. The vibrating member 4 includes a vibrating frame 41 which is driven to reciprocate by the power of the power converting mechanism and outputs the reciprocating power, and elastic bending portions 42 which are provided at both sides of the vibrating frame 41 and support the vibrating frame 41 so as to reciprocate. The vibrating piece with the structure can reduce power loss during action change. The eccentric shaft 21 of this embodiment is cylindrical, and the driving element 3 includes two connecting arms, the upper part of which is fixedly connected to the vibrating frame 41 of the vibrating element, and an X-shaped matching groove formed by the left and right matching walls 311 in C-shape and reverse C-shape. The two connecting arms are V-shaped below the vibrating piece. Of course, the fixed connection between the upper part of the driving element and the vibration frame 41 can be realized by solid or frame connection, which does not affect the overall effect.

The lower part of the driving element 3 of the embodiment is a bilateral symmetry matching groove, the left and right matching walls 311 of the matching groove are C-shaped and reverse C-shaped and have a certain width, a water-shaped power conversion structure is formed below the vibrating element, so that the matching groove is in point contact with the eccentric shaft 21, zero matching can be realized, the power conversion stroke is complete and has no dead point, the compensation of the interference fit position by the left and right matching walls 311 of the C-shaped and reverse C-shaped micro-elasticity is outside compensation, compared with the compensation design of the existing U-shaped eccentric shaft, the compensation scope which can be realized by the embodiment is larger, and the realization is easier. The engaging groove 31 of the present embodiment is a through groove opened in the front-rear direction, that is, the engaging groove is directly formed by the engaging walls 311 on the left and right sides. The structure is open in the front and the back, so that the eccentric wheel has no antagonistic restriction in the front and back directions in the rotation process, the motor torque and current change are small, the output is stable, the driving element 3 can move in the vertical direction along the cylindrical eccentric shaft, and no power loss exists in the vertical direction. Of course, the engaging groove 31 may be a frame-type groove, and only the influence of the front and rear frames on the eccentric shaft needs to be increased, and the power conversion of the engaging groove in the left-right direction is not affected.

As shown in fig. 2, a second embodiment of the reciprocating electric shaver of the present invention is different from the first embodiment in that: the head of the eccentric shaft 21 is spherical, the eccentric shaft 21 is designed to be an eccentric shaft structure adopted by most shavers in the market, the lower part of the driving element 3 of the embodiment is a matching groove 31 which is matched with the head of the eccentric shaft in a clamping ball manner and is symmetrical left and right, and the matching walls 311 on the left side and the right side of the matching groove 31 are vertical clamping walls, so that the matching groove and the eccentric shaft 21 are in point contact.

The utility model changes the hard and dead fit between the original driving element and the eccentric shaft, and adopts the interference flexible fit, so that the driving element and the eccentric shaft can always keep a zero-fit state, and the problems of loose fit and noise are effectively solved. The power conversion mechanism has high power conversion rate, low torque requirement on the motor, low noise and even silence, and is beneficial to improving skin feeling and hand feeling.

Although the present invention has been described with reference to the above embodiments, it should be understood that the utility model is not limited thereto, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a reciprocating type electric shaver, includes the cutting knife tackle, motor, the drive inner cutter left and right reciprocating's vibration piece that constitutes by outer sword and the inner cutter along outer sword internal surface sliding contact, its characterized in that: the power conversion mechanism is arranged between the vibrating piece (4) and the motor (1) and used for converting the rotating force of the motor into reciprocating power, the power conversion mechanism comprises an eccentric wheel (2) which is arranged on a motor output shaft (11) and is provided with an eccentric shaft (21), and a driving element (3) which is directly or indirectly connected onto the vibrating piece, the lower part of the driving element (3) made of a micro-elastic material is provided with a matching groove (31) which is in interference flexible fit with the eccentric shaft (21), and the damping between the matching walls (311) on the left side and the right side of the matching groove (31) of the driving element and the eccentric shaft (21) is larger than the friction damping between an inner cutter and an outer cutter in the cutting cutter set, so that the power conversion is realized and the reciprocating power is output to drive the vibrating piece.

2. The reciprocating electric shaver as set forth in claim 1, wherein: the eccentric shaft (21) is in a cylindrical form, the lower part of the driving element (3) is provided with a left-right symmetrical matching groove, and the matching walls (311) at the left side and the right side of the matching groove are in a C shape and an inverse C shape, so that the matching connection of the matching groove and the eccentric shaft (21) is point contact.

3. The reciprocating electric shaver as set forth in claim 1, wherein: the head of the eccentric shaft (21) is spherical, the lower part of the driving element (3) is provided with a matching groove (31) which is matched with the head of the eccentric shaft in a clamping ball way and is symmetrical left and right, and matching walls (311) at the left side and the right side of the matching groove (31) are vertical clamping walls, so that the matching groove and the eccentric shaft (21) are in point contact.

4. The reciprocating electric shaver according to claim 1, 2 or 3, wherein: the matching groove (31) is a through groove with an opening front and back, namely the matching groove is directly formed by matching walls (311) at the left side and the right side.

5. The reciprocating electric shaver according to claim 1, 2 or 3, wherein: and two connecting arms (312) fixedly connected with the lower part of the vibrating piece are arranged above the driving piece (3), and the two connecting arms are V-shaped below the vibrating piece.

6. The reciprocating electric shaver as set forth in claim 4, wherein: and two connecting arms (312) fixedly connected with the lower part of the vibrating piece are arranged above the driving piece (3), and the two connecting arms are V-shaped below the vibrating piece.

7. The reciprocating electric shaver according to claim 1, 2 or 3, wherein: the vibrating piece (4) comprises a vibrating frame (41) which is driven to reciprocate by the power conversion output reciprocating power of the power conversion mechanism, and elastic bending parts (42) which are arranged at two sides of the vibrating frame (41) and can support the vibrating frame (41) to reciprocate.

8. The reciprocating electric shaver as set forth in claim 4, wherein: the vibrating piece (4) comprises a vibrating frame (41) which is driven to reciprocate by power conversion output reciprocating power of a power conversion mechanism, and elastic bending parts (42) which are arranged at two sides of the vibrating frame (41) and can support the vibrating frame (41) to reciprocate.

9. The reciprocating electric shaver as set forth in claim 5, wherein: the vibrating piece (4) comprises a vibrating frame (41) which is driven to reciprocate by the power conversion output reciprocating power of the power conversion mechanism, and elastic bending parts (42) which are arranged at two sides of the vibrating frame (41) and can support the vibrating frame (41) to reciprocate.

10. The reciprocating electric shaver as set forth in claim 6, wherein: the vibrating piece (4) comprises a vibrating frame (41) which is driven to reciprocate by the power conversion output reciprocating power of the power conversion mechanism, and elastic bending parts (42) which are arranged at two sides of the vibrating frame (41) and can support the vibrating frame (41) to reciprocate.