CN201450439U

CN201450439U - linear vibrator

Info

Publication number: CN201450439U
Application number: CN2009200433360U
Authority: CN
Inventors: 冷泉芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-05-05
Anticipated expiration: 2019-07-10

Abstract

The utility model relates to linear vibrator for having vibration prompt inside a mobile phone. The liner vibrator comprises a cup-shaped shell body with an opening on the front end, the opening of the shell body is closed by an end cover, a guiding column is fixed in the center of the inner cavity of the shell body, a guiding sleeve capable of sliding along the guide column back and forth is nested on the guiding column, a counterweight block, a magnet and a magnetic yoke are fixedly mounted on the guiding sleeve, the magnet and the magnetic yoke are positioned at the front end of the counterweight block, a winding is arranged on the periphery of the front ends of the magnet and the magnetic yoke, and springs are arranged between the magnet and the front end of the magnetic yoke and the end cover, and between the rear end of the counterweight block and the bottom surface of the shell body. The liner vibrator has low manufacturing cost and long service life.

Description

Linear vibrator

Technical field

The utility model relates to a kind of linear vibrator that is used for producing in the mobile phone prompting vibration.

Background technology

In various vibration machines are installed on the mobile communication terminal (mobile phone), be used to produce vibration as the incoming call prompting.Existing vibrator adopts vibrating motor as power usually.Vibrating motor will drive eccentric hammer in the course of work, thereby produce vibration.Not only cost is higher for this structural vibrations device, and electric current will pass to vibrating motor by the commutator of brush and rotation in the course of the work, constantly produce electric spark and mechanical friction between brush and the commutator, damage the useful life of having reduced motor easily.

Summary of the invention

Technical problem to be solved in the utility model provides the linear vibrator of a kind of low cost of manufacture, long service life.

Linear vibrator of the present utility model comprises that a front end has the cup-shaped housing of opening, the opening of housing is sealed by end cap, the housing lumen centers is fixed with a guide pillar, being with one on the guide pillar can be along the guide pin bushing of slippage before and after the guide pillar, be installed with balancing weight, magnet and yoke on the guide pin bushing, magnet and yoke are positioned at the front end of balancing weight, are equipped with winding in the front end outer periphery of magnet and yoke, between magnet and yoke front end and the end cap, be provided with spring between balancing weight rear end and the housing bottom surface.Be embedded with the metal yoke sheet in the described end cap, so that the magnetic field in the housing is shielded.

An implementation of said structure is that described balancing weight socket is fixed on the guide pin bushing, on the step axle that the magnet of annular and yoke socket are fixed on the balancing weight front end.

Another implementation of said structure is, described balancing weight, magnet and yoke are fixed into as a whole with one section socket of guide pin bushing respectively.

The vibrational system that linear vibrator of the present utility model is formed by balancing weight and spring produces vibration, simple in structure, low cost of manufacture under the promotion of alternation external force.There is its natural frequency in the system that this weight and spring are formed, and when the natural frequency of the frequency of alternation external force and system is suitable, system will produce resonance, can export bigger vibratory output.The conduction mode of movement of this system belongs to fixedly connected, has avoided the not enough defective of life-span of vibrating motor fully.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is the structural representation of another embodiment of the utility model.

Embodiment

Linear vibrator of the present utility model as shown in the figure comprises that a front end has the housing 1 of opening, described housing 1 is installed an end cap 2 that is embedded with yoke sheet 3 at opening part, at guide pillar 4 of housing lumen centers fixed installation, be socketed with guide pin bushing 5 on the guide pillar 4, be connected with balancing weight 6, magnet 7 and yoke 8 on the guide pin bushing, magnet and yoke front end outer periphery are equipped with winding 9, and the front and back of balancing weight, magnet and yoke assembly are respectively arranged with spring 10.

In the structure of Fig. 1, balancing weight 6 sockets are fixed on the guide pin bushing 5, and the magnet 7 and yoke 8 sockets of annular are fixed on the step axle of balancing weight front end.

In the structure of Fig. 2, balancing weight 6, magnet 7 and yoke 8 are fixed into as a whole with one section socket of guide pin bushing 5 respectively.

In the utility model course of work, alternating current is transported to winding 9 by binding post, winding 9 produces alternating electromagnetic field, the magnetic field of electromagnetic field and magnet 7 produces interaction force, drive magnet 7 and balancing weight 6 produce double vibrations along guide pillar 4, when the natural frequency of the frequency of alternation external force and its double vibrations was suitable, system produced resonance, exports bigger vibratory output.

Claims

1. linear vibrator, it is characterized in that: it comprises that a front end has the cup-shaped housing (1) of opening, the opening of housing is sealed by end cap (2), the housing lumen centers is fixed with a guide pillar (4), being with one on the guide pillar can be along the guide pin bushing (5) of slippage before and after the guide pillar, be installed with balancing weight (6) on the guide pin bushing, magnet (7) and yoke (8), magnet and yoke are positioned at the front end of balancing weight, front end outer periphery in magnet and yoke is equipped with winding (9), between magnet and yoke front end and the end cap, be provided with spring (10) between balancing weight rear end and the housing bottom surface.

2. linear vibrator according to claim 1 is characterized in that: be embedded with metal yoke sheet (3) in the end cap.

3. linear vibrator according to claim 1 and 2 is characterized in that: the balancing weight socket is fixed on the guide pin bushing, on the step axle that the magnet of annular and yoke socket are fixed on the balancing weight front end.

4. linear vibrator according to claim 1 and 2 is characterized in that: balancing weight, magnet and yoke are fixed into as a whole with one section socket of guide pin bushing respectively.