CN202772776U

CN202772776U - Miniature linear vibrator

Info

Publication number: CN202772776U
Application number: CN 201220384339
Authority: CN
Inventors: 陆勤; 钱学峰; 陆杰才
Original assignee: ZHEJIANG LUFA MICRO MOTOR CO Ltd
Current assignee: ZHEJIANG LUFA MICRO MOTOR CO Ltd
Priority date: 2012-08-06
Filing date: 2012-08-06
Publication date: 2013-03-06
Anticipated expiration: 2022-08-06

Abstract

A miniature linear vibrator belongs to a motor provided with a reciprocating vibrating or swinging magnet, an armature or a coil system and comprises a casing, wherein a printing plate is respectively arranged on the inner side of a left end cover of the casing and the inner side of a right end cover of the casing. A coil is respectively connected with each of the printing plates. The two ends of each coil are connected with leads respectively through the printing plates. A vibrating body is arranged in an inner cavity of the casing and comprises an elastic sheet fixed in the casing. Two counterweight blocks are symmetrically arranged on the left side and the right side of the elastic sheet and are connected with the elastic sheet through rivets. The rivets penetrate through the centers of the two counterweight blocks and the center of the elastic sheet. Opening grooves are symmetrically arranged at the outside ends of the two counterweight blocks. The bottoms of the two opening grooves are respectively connected and fixed onto a bowl yoke in inserting mode. Each bowl yoke is a U-shaped rotating body. The bottom of an inner cavity of each bowl yoke is respectively connected with a steel magnet. The outside end of each steel magnet is respectively connected with a magnetism conduction sheet. The inside end of each coil respectively extends into the inner cavity of each bowl yoke. The outside end of each steel magnet respectively extends into an inner cavity of each coil. The miniature linear vibrator is simple in structure, low in manufacture cost and energy-saving and greatly reduces the loss of interior parts. Therefore, the service lives of the interior parts are prolonged. The miniature linear vibrator is also free of sparks and electromagnetic interference.

Description

Micro linear vibrator

Technical field

The utility model relates to a kind of motor of magnet, armature or the coil system that has back and forth, shakes or swing, espespecially a kind of micro linear vibrator.

Background technology

Micro linear vibrator usually uses and makes noiseless signal source in mobile communication apparatus (such as mobile phone), the vibroseis of health product in the position, seismaesthesia source in the game equipment and the medicine equipment.Usually micro linear vibrator is provided with micro-vibration-motor, and no matter micro-vibration-motor is cylindrical shape or flat pattern, all is comprised of motor and eccentricity balance-weight block.The eccentricity balance-weight block that rotarily drives by motor rotates, thereby produces vibrations.And these d.c. motors are generally with parts such as brush and commutators, are that parts are easy to wear with the motor greatest problem of brush and commutator, and the life-span is short, produces simultaneously spark, and electromagnetic interference is arranged.

The utility model content

The purpose of this utility model is to provide a kind of micro linear vibrator, and it is simple in structure, and low cost of manufacture is energy-conservation, has greatly reduced the wearing and tearing of inner body, has prolonged useful life, and the generation of the impacts such as no-spark and electromagnetic interference.

To achieve these goals, technical solution of the present utility model is: a kind of micro linear vibrator, comprising shell, the left side of described shell, the right end cap medial surface is installed respectively printed panel, difference connecting coil on two described printed panels, the axis of described coil is vertical with printed panel, the two ends of described coil are connected with wire by printed panel, the inner chamber of described shell is provided with vibration body, described vibration body comprises the shell fragment that is fixed in the shell inner cavity, described shell fragment is with left, right end cap is parallel, the left side of described shell fragment, right bilateral symmetry is provided with two balancing weights, two described balancing weights and shell fragment are connected and fixed by rivet, described rivet passes the center line of two balancing weights and the center line of shell fragment, the outboard end of two described balancing weights is arranged with two open slots, the trench bottom of two described open slots is rabbeted respectively the bowl yoke that fixing magnetic conductive material is made, described bowl yoke is that opening is towards the U-shaped revolving body in the outside, the intracavity bottom of two described bowl yokes is fixedly connected with respectively magnet steel, the outboard end of two described magnet steel connects respectively magnetic conduction sheet, the medial extremity of two described coils stretches into respectively the inner chamber of two bowl yokes, and the outboard end of two described magnet steel stretches into respectively the inner chamber of two coils.

The utility model micro linear vibrator, wherein said shell is cuboid, the inner chamber middle part of described shell is provided with four through holes one week, described shell fragment is square, the center of described shell fragment is provided with the first through hole that described rivet passes, the upper and lower, left and right end of described shell fragment is respectively equipped with four lugs, and four described lugs are inserted in respectively in four through holes, and are fixed in four through holes by spot welding or Laser Welding.

The utility model micro linear vibrator is positioned at four zones that its two center lines are divided into and is respectively equipped with the second through hole on the wherein said shell fragment, the cross section part of described the second through hole is waveform.

The utility model micro linear vibrator, wherein said printed panel are annular.

The utility model micro linear vibrator, wherein two described balancing weights are cuboid, and described open slot is cylindrical.

The utility model micro linear vibrator, wherein said magnetic conduction sheet and bowl yoke are the pure iron material and make.

The utility model micro linear vibrator, wherein each described coil into and out of end respectively with the welding of the track of printed panel, described track is connected with wire again, and the wire that goes out the end connection of two described coils is in parallel, and the wire that the inlet side of two described coils connects is in parallel.

The utility model micro linear vibrator, the medial surface of wherein said magnet steel is by the gluing intracavity bottom that is fixed in bowl yoke that connects, and the lateral surface of described magnet steel is adhesively fixed by the medial surface of glue and magnetic conduction sheet.

After adopting such scheme, the utility model micro linear vibrator is by being arranged at two coils in the shell and being arranged at two vibration bodies between the inner ring, make the magnet steel of the vibration body left and right sides, the magnetic conduction sheet that is positioned at the two magnet steel outside lays respectively at two coil inner chambers, when advancing of coil, go out to apply between the end in the time of making balancing weight and magnet steel produce the frequency of altogether shake or approaching altogether shake, by magnetic conduction sheet magnetic circuit is imported on the magnet steel, at magnetic conduction sheet, form magnetic circuit between the bowl yoke that magnet steel and permeability magnetic material are made, because the alternation of coil magnetic field, make magnet steel with balancing weight in coil because of the effect that is subjected to magnetic force left and right sides back and forth movement back and forth, thereby generation shaking force, because brushless and commutator in the utility model, therefore there are not the mutual wearing and tearing between brush and commutator, the wearing and tearing of inner body have been greatly reduced, therefore prolong its useful life, can not produce electric spark, therefore there is not corresponding electromagnetic interference yet, the utility model is simple in structure, cost is low, because two coil actings in conjunction under the alternating current effect, therefore produce double dynamically, accomplished energy-efficient.

Description of drawings

Fig. 1 is that the master of the utility model micro linear vibrator looks cutaway view;

Fig. 2 is the left view that the utility model micro linear vibrator removes left end cap;

Fig. 3 is that A-A between Fig. 1 housing and the shell fragment is to cutaway view.

Below in conjunction with accompanying drawing, by embodiment the utility model is described further;

Embodiment

As shown in Figure 1 to Figure 3, the utility model micro linear vibrator comprises shell 1, and shell 1 is cuboid.The inner chamber middle part of shell 1 is processed with four through holes 14 week.Be welded with respectively annular printed panel 4 on the left end cap 2 of shell 1, the medial surface of right end cap 3.Difference connecting coil 5 on two printed panels 4.Printed panel 4 is set to annular, and its shape is corresponding with coil 5 joint faces, saves material in the time of convenient the connection.The Surface Vertical of the axis of coil 5 and printed panel 4.Each coil 5 into and out of end respectively with printed panel 4 on track be welded to connect, track is connected with two wires again, the wire that end connects that goes out of two coils 5 is connected in parallel, the wire of the inlet side connection of two coils 5 is connected in parallel.The inner chamber of shell 1 is provided with vibration body 6.Vibration body 6 comprises the shell fragment 7 that is fixed in shell 1 inner chamber middle part.Shell fragment 7 is parallel with right end cap 3 with left end cap 2.Shell fragment 7 is square, and the center of shell fragment 7 is processed with the first through hole 15.The upper and lower, left and right end of shell fragment 7 is processed with respectively 16, four lugs 16 of lug that cooperate with four through holes 14 and is inserted in respectively in four through holes 14 and by spot welding or Laser Welding and is fixed in each through hole 14.In four zones that two center lines that are located thereon on the shell fragment 7 are divided into, be processed with respectively the second through hole 17.The cross section part of the second through hole 17 is waveform.Design can increase the elastic force of shell fragment 7 like this.The arranged on left and right sides of shell fragment 7 is arranged with the balancing weight 9 of two cylindrical shapes.Two balancing weights 9 are connected and fixed by rivet 8 with shell fragment 7.Rivet 8 passes the center line of two balancing weights 9 and the first through hole 15 of shell fragment 7.The outboard end of two balancing weights 9 is symmetrily processed with the trench bottom of 10, two open slots 10 of two columniform open slots and rabbets respectively fixing bowl yoke 11.The bowl yoke 11 be opening towards the U-shaped revolving body in the outside, it is made for the pure iron material.The intracavity bottom of two bowl yokes 11 is respectively by the gluing fixedly magnet steel 12 that connects.The outboard end of two magnet steel 12 is fixed circular magnetic conduction sheet 13 by gluing connecing respectively, and magnetic conduction sheet 13 is made for the pure iron material.The medial extremity of two coils 5 stretches into respectively the inner chamber of two bowl yokes 11, and the outboard end of two magnet steel 12 stretches into respectively the inner chamber of two coils 5.

During use, apply between the wire that two coils 5 of the utility model micro linear vibrator are connected and to make balancing weight 9 and magnet steel 12 produce altogether shake or when approaching the alternating current of the frequency of shake altogether, because the alternation in two coil 5 magnetic fields, magnetic conduction sheet 13 by the good pure iron material of magnetic property with magnetic circuit introduce magnet steel 12, and bowl yoke 11 on form magnetic circuit, in conjunction with shown in Figure 1, make magnet steel 6 with balancing weight 9 in coil 2 because of the effect that is subjected to magnetic force left and right sides back and forth movement back and forth, thereby produce shaking force; Because brushless and commutator in the utility model, therefore there are not the mutual wearing and tearing between brush and commutator, the wearing and tearing of inner body have been greatly reduced, therefore prolong its useful life, can not produce electric spark, therefore also do not have corresponding electromagnetic interference, the utility model is simple in structure, cost is low, because two coil actings in conjunction under the alternating current effect, therefore produce double dynamically, accomplished energy-efficient.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.

Claims

1. micro linear vibrator, it is characterized in that: comprise shell (1), the left side of described shell (1), right end cap (2,3) medial surface is installed respectively printed panel (4), the upper respectively connecting coil (5) of two described printed panels (4), the axis of described coil (5) is vertical with printed panel (4), the two ends of described coil (5) are connected with wire by printed panel (4), the inner chamber of described shell (1) is provided with vibration body (6), described vibration body (6) comprises the shell fragment (7) that is fixed in shell (1) inner chamber, described shell fragment (7) is with left, right end cap (2,3) parallel, the left side of described shell fragment (7), right bilateral symmetry is provided with two balancing weights (9), two described balancing weights (9) are connected and fixed by rivet (8) with shell fragment (7), described rivet (8) passes the center line of two balancing weights (9) and the center line of shell fragment (7), the outboard end of two described balancing weights (9) is arranged with two open slots (10), the trench bottom of two described open slots (10) is rabbeted respectively the bowl yoke (11) that fixing magnetic conductive material is made, described bowl yoke (11) is that opening is towards the U-shaped revolving body in the outside, the intracavity bottom of two described bowl yokes (11) is fixedly connected with respectively magnet steel (12), the outboard end of two described magnet steel (12) connects respectively magnetic conduction sheet (13), the medial extremity of two described coils (5) stretches into respectively the inner chamber of two bowl yokes (11), and the outboard end of two described magnet steel (12) stretches into respectively the inner chamber of two coils (5).

2. micro linear vibrator as claimed in claim 1, it is characterized in that: described shell (1) is cuboid, the inner chamber middle part of described shell (1) is provided with four through holes (14) week, described shell fragment (7) is square, the center of described shell fragment (7) is provided with the first through hole (15) that described rivet (8) passes, described shell fragment (7) upper, lower, left, right-hand member is respectively equipped with four lugs (16), four described lugs (16) are inserted in respectively in four through holes (14), and are fixed in four through holes (14) by spot welding or Laser Welding.

3. micro linear vibrator as claimed in claim 2, it is characterized in that: be positioned at four zones that its two center lines are divided on the described shell fragment (7) and be respectively equipped with the second through hole (17), the cross section part of described the second through hole (17) is waveform.

4. micro linear vibrator as claimed in claim 3 is characterized in that: described printed panel (4) is annular.

5. micro linear vibrator as claimed in claim 4, it is characterized in that: two described balancing weights (9) are cuboid, and described open slot (10) is cylindrical.

6. micro linear vibrator as claimed in claim 5 is characterized in that: described magnetic conduction sheet (13) and a bowl yoke (11) are the pure iron material and make.

7. such as the described micro linear vibrator of one of claim 1-6, it is characterized in that: each described coil (5) into and out of end respectively with the welding of the track of printed panel (4), described track is connected with wire again, the wire that goes out the end connection of two described coils (5) is in parallel, and the wire that the inlet side of two described coils (5) connects is in parallel.

8. micro linear vibrator as claimed in claim 7, it is characterized in that: the medial surface of described magnet steel (12) is by the gluing intracavity bottom that is fixed in a bowl yoke (11) that connects, and the lateral surface of described magnet steel (12) is adhesively fixed by the medial surface of glue and magnetic conduction sheet (13).