阅读说明：本技术 一种高效压电洁面仪刷头 (High-efficient piezoelectricity clean face appearance brush head ) 是由 李晓蔚 吴越 兰莉莉 于 2018-07-13 设计创作，主要内容包括：本发明涉及一种高效压电洁面仪刷头,包括：基座、壳体、塑胶外壳、预紧弹簧和压电振子,其中：基座由基座底板、刷座和刷毛构成；基座底板上端面布置一矩形基座振子安装台,下端面与刷座连接；基座振子安装台两侧布置有两个基座振子安装槽；压电振子长度方向一端布置自由端质量块,另一端安装在基座振子安装槽内；预紧弹簧压缩后一端与自由端质量块连接,另一端安装在壳体振子安装槽内；塑胶外壳中空圆柱弹性体,粘接在基座和壳体外侧。本发明采用预应力压电驱动,具有结构简单、容差性强、功率密度高、发热少、无电磁波干扰等优点,提高了使用寿命,特别是采用预应力后,基板变形所需弹性势能由预紧弹簧提供,从而提高了能量转化效率。(The invention relates to a brush head of a high-efficiency piezoelectric face cleaning instrument, which comprises: base, casing, plastic shell, pretension spring and piezoelectric vibrator, wherein: the base is composed of a base bottom plate, a brush holder and brush bristles; a rectangular base vibrator mounting table is arranged on the upper end face of the base bottom plate, and the lower end face of the base bottom plate is connected with the brush holder; two base vibrator mounting grooves are arranged on two sides of the base vibrator mounting table; a free end mass block is arranged at one end of the piezoelectric vibrator in the length direction, and the other end of the piezoelectric vibrator is arranged in the base vibrator mounting groove; after the pre-tightening spring is compressed, one end of the pre-tightening spring is connected with the free end mass block, and the other end of the pre-tightening spring is arranged in the shell vibrator installation groove; the plastic shell is a hollow cylindrical elastomer and is bonded outside the base and the shell. The invention adopts the prestress piezoelectric drive, has the advantages of simple structure, strong tolerance, high power density, less heating, no electromagnetic wave interference and the like, prolongs the service life, and particularly improves the energy conversion efficiency because the elastic potential energy required by the deformation of the substrate is provided by the pre-tightening spring after the prestress is adopted.)

1. A high efficiency piezoelectric face cleaning instrument brush head comprising: base (1), casing (2), plastic shell (3), pretension spring (4), its characterized in that still includes piezoelectric vibrator (5), wherein:

the base bottom plate (11) is of a wafer structure, a rectangular boss is arranged on the upper end face of the wafer structure to serve as a base vibrator mounting table (111), the lower end face of the wafer structure is connected with a brush holder (12), and brush bristles (13) are arranged on the brush holder (12); two base vibrator installation grooves (1111) are symmetrically arranged on two side surfaces of the base vibrator installation table (111); the length direction of the vibrator mounting groove (1111) is parallel to the surface of the wafer of the base bottom plate (11); the shell (2) is a semi-cylindrical shell structure formed by dividing a hollow cylindrical shell with an opening at the bottom surface along a plane where a central line is located, and a spring installation groove (21) is arranged in the middle of the inner side surface of the semi-cylindrical groove; the plastic shell (3) is a hollow cylindrical elastic body with an opening at the bottom surface, is bonded at the outer sides of the base (1) and the shell (2), and a gap is reserved between the shell (2) and the base (1); the piezoelectric vibrator (5) is formed by adhering piezoelectric thin material (52) to the surface of an elastic substrate (51), a free end mass block (53) is arranged at one end in the length direction, and the other end of the piezoelectric thin material is arranged in the base vibrator mounting groove (1111); the free end mass block (53) is opposite to the spring mounting groove (21); one end of the pre-tightening spring (4) is connected with the free end mass block (53) after being compressed, the other end of the pre-tightening spring is installed in the shell vibrator installation groove (21), and the free length of the pre-tightening spring is larger than the length of the pre-tightening spring after installation.

2. The brush head of the high-efficiency piezoelectric face cleaning instrument according to claim 1, characterized in that: the two piezoelectric vibrators (5) have the same structure, and adopt a single-chip piezoelectric vibrator formed by pasting one piece of piezoelectric sheet material (52) on the elastic substrate (51) with the free end mass block (53) or a double-chip piezoelectric vibrator formed by pasting two pieces of piezoelectric sheet material (52) on two sides of the elastic substrate (51) with the free end mass block (53).

Technical Field

The invention belongs to the field of hairdressing or shaving equipment of personal or household articles in human life necessity, and particularly relates to a high-efficiency piezoelectric face cleaning instrument brush head.

Background

At present, the electric facial cleaning instrument on the market mainly depends on parts such as a motor-driven brush and the like to operate to clean the skin of the face, the existing motor-driven structural mode has the defects of complex structure, higher processing precision requirement and higher processing cost, and the application of the piezoelectric driving type facial cleaning instrument in the actual production is seriously limited, so that the piezoelectric driving type facial cleaning instrument which has a simple structure and is convenient for large-scale production is very important to design. The existing piezoelectric driving mechanism has low energy conversion efficiency under the non-resonance condition, and the user experience of products is influenced.

Disclosure of Invention

In order to solve the problems that the structure of a driving part motor adopted in the existing facial cleaning instrument is complex, the requirement on processing precision is high, and the processing cost is high, a high-efficiency piezoelectric facial cleaning instrument brush head is provided, the high-efficiency piezoelectric facial cleaning instrument brush head is composed of a base, a shell, a plastic shell, a pre-tightening spring and a piezoelectric vibrator, the piezoelectric vibrator applies alternating voltage, the piezoelectric vibrator generates reciprocating bending deformation and drives the base to generate vertical vibration under the reaction of the inertia force of a mass block, the skin is deeply cleaned in the vertical direction, and dirty objects are 'patted' out from deep pores. Compared with the mode that the motor adopted by the existing massage appliance drives the crank slider mechanism to form vibration, the prestress piezoelectric driving mode is adopted, the prestress piezoelectric driving mode has the advantages of simple structure, strong tolerance, high power density, less heating, no electromagnetic wave interference and the like, and particularly after the prestress is adopted, the elastic potential energy required by the deformation of the substrate is provided by the pre-tightening spring, so that the energy conversion efficiency is improved, and the energy is more energy-saving than the simple piezoelectric inertia driving mode.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention relates to a high-efficiency piezoelectric face cleaning instrument brush head, which comprises: base, casing, plastic shell, pretension spring and piezoelectric vibrator, wherein:

the base is formed by connecting the lower end surface of a base bottom plate with a brush holder for arranging brush bristles; the base bottom plate is of a wafer structure, and a rectangular boss is arranged on the upper end face of the wafer structure and serves as a base vibrator mounting table; two vibrator mounting grooves are symmetrically arranged on two side surfaces of the base vibrator mounting table; the length direction of the vibrator mounting groove is parallel to the surface of the base bottom plate wafer; the shell is a semi-cylindrical shell structure formed by dividing a hollow cylindrical shell with an opening in the bottom surface along a plane where a center line is located, and a spring installation groove is arranged in the middle of the inner side surface of the semi-cylindrical groove; the plastic shell is a hollow cylindrical elastic body with an opening on the bottom surface, is adhered to the outer sides of the base and the shell, a gap is reserved between the shell and the base, the plastic shell is used for fixing the position between the shell and the base, and can be locally deformed during driving so as to enable the base and the shell to relatively move; the piezoelectric vibrator is formed by adhering piezoelectric thin material on the surface of an elastic substrate and arranging a free end mass block at one end in the length direction, and the other end of the piezoelectric thin material is arranged in the base vibrator mounting groove; the free end mass block is opposite to the spring mounting groove; and after the pre-tightening spring is compressed, one end of the pre-tightening spring is connected with the free end mass block, and the other end of the pre-tightening spring is arranged in the shell vibrator mounting groove.

The two piezoelectric vibrators have the same structure, and adopt a single-chip piezoelectric vibrator formed by sticking a piece of piezoelectric sheet material on the elastic substrate with the free end mass block or a double-chip piezoelectric vibrator formed by sticking two pieces of piezoelectric sheet material on two sides of the elastic substrate with the free end mass block.

During operation, handheld plastic shell, piezoelectric vibrator fixes on the base, applys alternating voltage to piezoelectric vibrator, and it takes place reciprocal bending deformation, and piezoelectric vibrator drives the vibration of fixed brush hair emergence for the casing on base and the base under the reaction of free end quality piece inertial force at the flexural vibration in-process, forms the cleaning power, and the vertical direction is clean through carrying out deep skin, goes out dirty thing from pore depths "bat". In the motion process of each period, the electric energy is converted into mechanical energy by the piezoelectric material, the mechanical energy comprises mechanical energy stored by bending the piezoelectric vibrator and kinetic energy of the system, after the pre-tightening spring structure is added, the elastic potential energy of the substrate and the elastic potential energy of the spring are mutually supplemented when the substrate is bent, so that the mechanical energy converted into the kinetic energy of the system is increased, and the energy conversion efficiency is improved.

Drawings

Fig. 1 is a schematic sectional structure diagram of a brush head of the high-efficiency piezoelectric face cleaning instrument.

Fig. 2 is a schematic view of the structure of the base used in the present invention.

Fig. 3 is a schematic view of the structure of the housing employed in the present invention.

Detailed Description

Referring to fig. 1, 2 and 3, the invention relates to a high-efficiency piezoelectric face cleaning instrument brush head, which comprises: base 1, casing 2, plastic shell 3, pretension spring 4 and piezoelectric vibrator 5 constitute, wherein:

the base 1 is composed of a base bottom plate 11, a brush holder 12 and brush bristles 13; the base bottom plate 11 is of a wafer structure, a rectangular boss is arranged on the upper end face of the wafer structure to serve as a base vibrator mounting table 111, the lower end face of the wafer structure is connected with the brush holder 12, and brush bristles 13 are arranged on the brush holder 12; two base vibrator mounting grooves 1111 are symmetrically arranged on two side surfaces of the base vibrator mounting table 111; the length direction of the vibrator mounting groove 1111 is parallel to the surface of the wafer of the base bottom plate 11; the shell 2 is a semi-cylindrical shell structure formed by dividing a hollow cylindrical shell with an opening at the bottom surface along a plane where a central line is located, and a spring installation groove 21 is arranged in the middle of the inner side surface of the semi-cylindrical groove; the plastic shell 3 is a hollow cylindrical elastic body with an opening at the bottom surface, is bonded at the outer sides of the base 1 and the shell 2, and a gap is reserved between the shell and the base; the piezoelectric vibrator 5 is formed by adhering piezoelectric sheet materials 52 on the surface of an elastic substrate 51, arranging a free end mass block 53 at one end in the length direction, and installing the other end in the vibrator installation groove 1111; the free end magnetic quality block 53 is opposite to the spring mounting groove 21; one end of the pre-tightening spring 4 is bonded with the free end mass block 53 after being compressed, the other end of the pre-tightening spring is bonded in the spring mounting groove 21, and the free length is larger than the length after mounting.

During operation, handheld plastic shell 3, piezoelectric vibrator 5 fixes on the base, applys alternating voltage to piezoelectric vibrator 5, and it takes place reciprocal bending deformation, and piezoelectric vibrator 5 drives fixed brush hair 13 on base 1 and the base 1 and takes place for the vertical vibration of casing 2 under the reaction of free end quality piece 53 inertial force at the flexural vibration in-process, forms the cleaning power, and the vertical direction is through carrying out deep skin cleanness, will dirty thing from pore depths "clap" and go out.