CN210120661U

CN210120661U - Magnetic spring sounder

Info

Publication number: CN210120661U
Application number: CN201921099872.2U
Authority: CN
Inventors: 江文明; 冉龙腾; 魏义祥
Original assignee: Harper Stone (shanghai) Electronics Co Ltd
Current assignee: Zhejiang Shidiwei Electronics Co.,Ltd.
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-02-28
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to a magnetic spring sounder, which comprises a stator, a rotor and a single shaft, wherein the stator comprises a driving coil and a positioning magnet, and the positioning magnet is fixedly arranged relative to the driving coil; the rotor comprises a mass block and a movable magnet, the movable magnet is fixedly arranged relative to the mass block, and the mass block is sleeved on the single shaft in a sliding manner; when the driving coil is electrified, the positioning magnet generates a magnetic field to drive the rotor to move back and forth along the single shaft, and the technical problem that sound transmission can be realized only by opening a hole on a screen of a receiver of the existing communication equipment is solved.

Description

Magnetic spring sounder

Technical Field

The utility model relates to a vocal ware, in particular to magnetic spring vocal ware.

Background

Nowadays, a common speaker is used for a handset of a communication device, and therefore, a hole is required to be formed in the device, and sound is transmitted through the hole. But with the appearance of full screen equipment like full screen cell-phone, no longer be fit for the trompil on the screen, if trompil can have following drawback on full screen: firstly, influence pleasing to the eye, secondly the trompil holding causes the screen breakage on the screen, and thirdly influences the use and feels, and it is very inconvenient to play like the trompil screen. Therefore, what is needed is a sound generator that does not require holes to be formed in the entire screen.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a magnetic spring sounder to solve current communications facilities's earphone and need trompil just can realize the technical problem of sound transmission on the screen.

In order to solve the problems, the utility model provides a magnetic spring sounder, which comprises a stator, a rotor and a single shaft, wherein the stator comprises a driving coil and a positioning magnet, and the positioning magnet is fixedly arranged relative to the driving coil; the rotor comprises a mass block and a movable magnet, the movable magnet is fixedly arranged relative to the mass block, and the mass block is sleeved on the single shaft in a sliding manner;

when the driving coil is electrified, a magnetic field is generated to drive the rotor to reciprocate along the single shaft.

Preferably, the moving magnet is fixed on the mass block, and the mass block shuttles the driving coil.

Preferably, the device comprises a shell with a containing space:

the shaft is fixed in the shell;

the shell comprises a first cover plate, a shell and a second cover plate, wherein the first cover plate and the second cover plate are arranged on two sides of the shell in a covering mode;

the stator further comprises an FPC, the FPC is fixed on the first cover plate, the driving coil and the positioning magnet are fixed in the shell, and the driving coil is electrically connected with the FPC;

the single axis passes through the drive coil.

Preferably, the positioning magnets comprise a plurality of first small magnets, and the first small magnets are uniformly arranged in the shell at intervals around the driving coil.

Preferably, the outer wall of the driving coil is fixedly connected with the inner wall of the casing, and the first small magnets are located on the periphery of the driving coil and fixed at the inner corners of the casing.

Preferably, the movable magnets comprise a plurality of second small magnets, and the second small magnets are arranged on the mass block at intervals.

Preferably, the first small magnets and the second small magnets are in one-to-one correspondence in position.

Preferably, the first small magnet is located outside the drive coil, and the second small magnet is located inside the drive coil.

Preferably, one end of the single shaft is fixed to the first cover plate.

Preferably, a bearing mounting hole is formed in the middle of the mass block, and the mass block is mounted on the single shaft by arranging a bearing in the bearing mounting hole.

Compared with the prior art, the utility model discloses there are following technological effect:

the utility model provides a magnetic spring sound production ware need not trompil on the screen of comprehensive screen equipment, directly installs this sound production ware and just can drive the screen and make a sound in equipment, reaches the effect of earphone.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts. In the drawings:

fig. 1 is an exploded view of the magnetic spring sounder of the present invention;

FIG. 2 is a top sectional view of the magnetic spring sound generator of the present invention;

fig. 3 is a left sectional view of the magnetic spring sound generator of the present invention;

fig. 4 is a front sectional view of the magnetic spring sound generator of the present invention.

Detailed Description

The magnetic spring sounder provided by the present invention will be described in detail with reference to fig. 1 to 4, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed embodiment and a specific operation process are given, but the present invention is not limited to the following embodiments, and those skilled in the art can modify and color-complement the present invention without changing the spirit and content of the present invention.

Referring to fig. 1 to 4, a magnetic spring sounder includes a stator 2, a rotor 3 and a single shaft 4, where the stator 2 includes a driving coil 21 and a positioning magnet, and the positioning magnet is fixedly disposed relative to the driving coil 21; the rotor 3 comprises a mass block 31 and a movable magnet, the movable magnet is fixedly arranged relative to the mass block 31, and the mass block 31 is sleeved on the single shaft 4 in a sliding manner;

when the driving coil 21 is energized with a low-voltage ac voltage, an alternating magnetic field is generated to drive the rotor 3 to reciprocate along the single shaft 4.

In this embodiment, the moving magnet is fixed to the mass 31, and the mass 31 passes through the driving coil 21.

In the present embodiment, the magnetic spring sound generator includes a housing 1 having an accommodation space:

the shaft is fixed in the shell 1;

the housing 1 includes a first cover plate 11, a housing 13 and a second cover plate 12, the first cover plate 11 and the second cover plate 12 are disposed on two sides of the housing 13, in this embodiment, the housing 13 is a frame without bottom on two sides;

the stator 2 further comprises an FPC23, the FPC23 is pasted on the first cover plate 11, the driving coil 21 and the positioning magnet are pasted in the shell 13, and the driving coil 21 is electrically connected with the FPC 23;

the single shaft 4 passes through the driving coil 21.

Preferably, the positioning magnets comprise a plurality of first small magnets 22, and the plurality of first small magnets 22 are uniformly arranged in the shell 13 at intervals around the driving coil 21.

The outer wall of the driving coil 21 is fixedly connected with the inner wall of the shell 13, and the first small magnets 22 are positioned on the periphery of the driving coil 21 and fixed at the inner corners of the shell 13.

The movable magnets comprise a plurality of second small magnets 32, and the second small magnets 32 are arranged on the mass block 31 at intervals. In this embodiment, the mass block 31 is provided with a plurality of grooves at regular intervals, and a plurality of small magnets are respectively fixed in one of the grooves.

The first small magnets 22 and the second small magnets 32 are in one-to-one correspondence in position.

The first small magnet 22 is located outside the drive coil 21, and the second small magnet 32 is located inside the drive coil 21.

One end of the single shaft 4 is fixed to the first cover plate 11.

In the present embodiment, the first and second

small magnets

22 and 32 both generate a driving force and have a function of keeping the mass 31 balanced, that is, keeping the mass 31 from tilting. The mass 31 is adjacent to the first cover 11 before actuation, and the sound generator will act differently and produce different sounds when the given input frequency is varied, thereby forming a magnetic spring sound generator.

The utility model discloses do not limit to the number of first little magnetite 22 and second little magnetite 32, can select according to the shape of shell 13. Taking the case 13 as a square as an example, that is, the inner wall of the case 13 also forms a square, and the square has four corners, therefore, a first small magnet 22 is glued to each of the four corners of the square, and the shape of the first small magnet 22 is attached to the inner corner of the square. The driving coil 21 may be hexagonal or octagonal, and four inner walls are adhered to four sides of the driving coil 21, respectively. Four grooves are arranged on the mass block 31 at intervals, and four second small magnets 32 are respectively attached in the grooves.

In this embodiment, the middle of the mass 31 is provided with a bearing mounting hole, and the mass 31 is fixed with a bearing 33 in the bearing mounting hole, and then the bearing 33 is sleeved (clearance fit) on the single shaft 4 again, so as to realize the axial movement of the mass 31 along the single shaft 4.

The utility model discloses an equipment step: firstly, an FPC23 is attached to a first cover plate 11 with a backing plate, then a single shaft 4 is welded on the first cover plate 11, secondly, first small magnets 22 are respectively adhered to inner corners of a shell 13 through glue, a driving coil 21 is adhered to the inner wall of the shell 13, then the first cover plate 11 is buckled with the shell 13, a lead of the driving coil 21 is welded on an FPC23, then the first cover plate 11 is welded with the shell 13, and the stator 2 is completed; gluing the second small magnets 32 to the mass block 31 respectively, and riveting the bearing 33 to the mass block 31 to complete the rotor 3; the bearing 33 is fitted over the single shaft 4, and the second cover plate 12 is welded to the other side of the housing 13.

The disclosure above is only one specific embodiment of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.

Claims

1. A magnetic spring sounder is characterized by comprising a stator, a rotor and a single shaft, wherein the stator comprises a driving coil and a positioning magnet, and the positioning magnet is fixedly arranged relative to the driving coil; the rotor comprises a mass block and a movable magnet, the movable magnet is fixedly arranged relative to the mass block, and the mass block is sleeved on the single shaft in a sliding manner;

2. A magnetic spring sounder according to claim 1, wherein said moving magnet is fixed to said mass, said mass passing through said drive coil.

3. A magnetic spring sounder according to claim 2 and comprising a housing having an accommodating space:

the shaft is fixed in the shell;

the single axis passes through the drive coil.

4. A magnetic spring sounder according to claim 3, wherein said positioning magnets comprise a plurality of first small magnets, said plurality of first small magnets being disposed evenly spaced around said drive coil within said housing.

5. The magnetic spring sounder according to claim 4, wherein an outer wall of said drive coil is fixedly attached to an inner wall of said housing, and wherein said first plurality of small magnets are located at an outer periphery of said drive coil and fixed at inner corners of said housing.

6. A magnetic spring sounder according to claim 4, wherein said moving magnets comprise a plurality of second magnetite, a plurality of said second magnetite being spaced apart on said mass.

7. The magnetic spring sounder according to claim 6, wherein said first and second small magnets are positioned in a one-to-one correspondence.

8. The magnetic spring sounder according to claim 6, wherein said first small magnet is located on an outer side of said drive coil and said second small magnet is located on an inner side of said drive coil.

9. A magnetic spring sounder according to claim 3 wherein one end of said single shaft is fixed to said first cover plate.

10. A magnetic spring sounder according to claim 1 wherein the mass is provided with a bearing mounting hole in the middle thereof, said mass being mounted on said single shaft by providing a bearing in said bearing mounting hole.