Tool bit for rotary electric shaver

Abstract

The invention discloses a tool bit for a rotary electric shaver, wherein a knife mesh hood is provided with a wavy curved surface, C-shaped or S-shaped beard inlet hole grooves are arranged on the knife mesh hood, the beard inlet hole grooves are combination of circular holes and grooves or combination of long grooves and short grooves; a movable knife is fixed on a drive connecting member in a hot-pressing smelting manner to form a movable knife assembly, the movable knife assembly is driven by an upper conical surface of a conical surface driving shaft and an inner conical surface of a driving shaft sleeve in a contact manner, the movable knife assembly is arranged on a boss on the inner surface of an elastic tool apron, and the movable knife assembly is only in contact with the boss (11) on the inner surface of the elastic tool apron; the elastic tool apron is used for applying a locking force to the movable knife assembly upwards and is connected with the knife mesh hood; and the movable knife assembly is in firm contact with the inner surface of the knife mesh hood under the action of the locking force. The tool bit for the rotary electric shaver in the invention is used for solving the problems of beard clamping, beard pulling, bad sharpness and poor shaving tone quality of the traditional shaver tool bits and perfectly capturing the facial skin outline of a human body so as to achieve a more effective, comfortable and complete shaving effect.

Description

technical field [0001] The invention relates to the field of electric shaver cutter head, in particular to the cutter head for rotary electric shaver. Background technique [0002] There are two main types of electric shavers currently on the market: reciprocating and rotary. Generally speaking, the comfort of shaving, the efficiency of shaving (speed), and the cleanliness of shaving are directly related to the personal facial contour, beard condition and the structure of the razor head. Short, hard and straight beards are suitable Compared with the reciprocating razor, the reciprocating razor has a large contact area between the blade surface and the facial skin, the blade mesh is thin (about 0.06mm), and the blade speed is generally above 8000RPM. The effect of shaving short and straight beards is good, but the reciprocating The biggest disadvantage of the traditional razor is the large vibration, which is not conducive to partial shaving, and it is not easy to shave slig...

AI Technical Summary

Problems solved by technology

In order to effectively increase the shaving area, improve shaving efficiency and shaving comfort, shaver manufacturers at home and abroad have intensified the research and development of razor heads in recent years, and successively launched two-ring and three-ring arcs. For the structure of the cutter head, some manufacturers even introduced the design concept of four-ring arc surface cutter head. On the mesh surface of the cutter head whose outer diameter is only φ20.4mm, the increase of the ring shape will inevitably increase the difficulty of manufacturing the cutter head. Taking the production of the three-ring arc surface cutter head as an example, the three-ring arc surface must be thinned three times and ground three times on the cutter head mesh surface (cutter net cover 7). In order to ensure the cooperation between the knife net cover 7 and the moving knife 8, Grind the inner surfaces of the three inner rings of the knife screen cover 7; and, the increase in the number of rings cannot realize the shaving of the full arc surface of the knife screen cover 7, and it is necessary to avoid every gap between the moving knife 8 and the knife screen cover 7. The connecting part between the two rings, there must be a gap that cannot be shaved between the rings.

In addition, the complexity of the processing technology of the curved surface cutter head and the processing equipment require extremely high technical level of the operators. Although some domestic manufacturers have manufactured the curved surface cutter head, mass production cannot be realized due to the high production cost. Moreover, the product quality Unstable and can't really go on sale

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