CN210431857U

CN210431857U - Compact micro-speaker

Info

Publication number: CN210431857U
Application number: CN201922095994.0U
Authority: CN
Inventors: 尹强; 蒋林杰; 戴海军; 陈洲; 苏永红
Original assignee: Shenzhen Sanji Technology Co ltd
Current assignee: Shenzhen Sanji Technology Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-04-28
Anticipated expiration: 2029-11-28

Abstract

The utility model relates to a speaker technical field discloses a compact structure's miniature speaker, including the backshell, main magnet steel, vice magnet steel, the voice coil loudspeaker voice coil, the pole piece, the steel ring, fixed bolster and lead wire, vice magnet steel includes the vice magnet steel of first pair magnet steel and second, main magnet steel's lateral wall respectively with first pair magnet steel and the vice magnet steel of second between form a mounting groove that can hold the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil inlays to be located in the mounting groove, the pole piece is pasted in main magnet steel's upper end wall, the upper end of fixed bolster is located to the steel ring lid, the lower extreme reason of fixed bolster is concave respectively to be equipped with first storage tank and the second storage tank with the vice magnet steel looks adaptation of first pair magnet steel and second, first pair magnet steel and the vice magnet steel of second inlay respectively and locate in. The technical scheme of the utility model can improve packaging efficiency, and compact structure, low cost, it is fixed firm, effectively avoid taking place the not hard up problem of displacement.

Description

Compact micro-speaker

Technical Field

The utility model relates to a speaker technical field, in particular to compact structure's miniature speaker.

Background

The micro-speaker is an important acoustic component of electronic equipment, is an energy conversion device capable of converting between an electric signal and a sound signal, and belongs to the most basic sound production unit. The loudspeaker comprises a shell with a containing space, and a magnetic circuit assembly and a vibration assembly which are contained in the shell, wherein a voice coil lead is electrically connected with an external circuit through a conductive terminal arranged on the loudspeaker shell to form a loop, and the vibration diaphragm is driven to vibrate and sound through the electromagnetic induction principle, so that the sound production function of the loudspeaker is realized.

However, most of the existing micro-speakers are complex in structural design, cumbersome to assemble and low in efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a compact structure's miniature speaker, aim at solving current miniature speaker on structural design, most comparatively complicated, the equipment is loaded down with trivial details, the technical problem of inefficiency.

In order to achieve the above object, the micro speaker with compact structure provided by the present invention comprises a back case, a main magnetic steel, an auxiliary magnetic steel, a voice coil, a pole piece, a steel ring, a fixing bracket and a lead wire, wherein the main magnetic steel and the auxiliary magnetic steel are both bonded and fixed on the upper end surface of the back case, the fixing bracket is detachably covered on the back case, the auxiliary magnetic steel comprises a first auxiliary magnetic steel and a second auxiliary magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are respectively arranged on the outer side wall of the main magnetic steel at intervals, a mounting groove capable of accommodating the voice coil is formed between the outer side wall of the main magnetic steel and the inner side wall of the first auxiliary magnetic steel and the second auxiliary magnetic steel, the voice coil is embedded in the mounting groove, the pole piece is adhered on the upper end wall of the main magnetic steel, the steel ring is arranged on the upper end portion of the fixing bracket, and the steel ring is abutted against the upper end surface of the, the lower extreme reason of fixed bolster concave respectively be equipped with first storage tank and the second storage tank of the vice magnet steel looks adaptation of first pair magnet steel and second, the vice magnet steel of first pair magnet steel and second inlays respectively to be located set up in first storage tank and the second storage tank, the one end of lead wire respectively with the voice coil loudspeaker voice coil electricity is connected, the other end of lead wire stretches out respectively the fixed bolster sets up outward.

Further, the upper end of fixed bolster is equipped with a first recess, the steel ring inlays to be located set up in the first recess, the centre of steel ring is equipped with a second recess, the voice coil loudspeaker voice coil is located set up in the second recess, just the inside wall of second recess respectively protruding be equipped with first butt joint board and the second butt joint board of first pair magnet steel and the vice magnet steel one-to-one of second, just first butt joint board and second butt joint board respectively with the upper end wall butt setting of first pair magnet steel and the vice magnet steel of second.

Furthermore, two inner side walls of the first groove are respectively provided with a buckle convex strip in a protruding mode, and two outer side edges of the first abutting plate are respectively abutted to the buckle convex strips.

Furthermore, the two ends of the upper end edge of the fixed support are respectively provided with a wiring groove in a concave mode, and the lead wires are respectively arranged in the wiring grooves in a penetrating mode.

Furthermore, two ends of the inner side wall of the second groove are respectively provided with a clearance groove in a concave mode.

Further, still include vibrating diaphragm and well subsides, the vibrating diaphragm lid is located the upper end setting of fixed bolster, just the periphery of vibrating diaphragm with the upper end edge bonding fixed connection of fixed bolster, the upper end of voice coil loudspeaker voice coil with the lower terminal surface bonding fixed connection of vibrating diaphragm, well subsides paste in the centre of the up end of vibrating diaphragm sets up.

Furthermore, the periphery of vibrating diaphragm is equipped with a reinforcing groove, just the reinforcing groove ring is located the periphery wall setting of voice coil loudspeaker voice coil well subsides.

Further, the first auxiliary magnetic steel and the second auxiliary magnetic steel are respectively fixed in the first accommodating groove and the second accommodating groove through glue bonding.

Furthermore, four vertex angles of the upper end part of the fixed support are respectively provided with a limiting column in a protruding mode.

Adopt the technical scheme of the utility model, following beneficial effect has: the technical proposal of the utility model is that the main magnetic steel and the auxiliary magnetic steel are both bonded and fixed on the upper end surface of the back shell, the detachable cover of the fixed bracket is arranged on the back shell, the auxiliary magnetic steel comprises a first auxiliary magnetic steel and a second auxiliary magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are respectively arranged on the outer side wall of the main magnetic steel at intervals, the outer side wall of the main magnetic steel and the inner side wall of the first auxiliary magnetic steel and the second auxiliary magnetic steel form a mounting groove for accommodating the voice coil respectively, the voice coil is embedded in the mounting groove, the pole piece is adhered on the upper end wall of the main magnetic steel, the steel ring cover is arranged on the upper end of the fixed bracket, and the steel ring is abutted against the upper end surface of the auxiliary magnetic steel, the lower end edge of the fixed bracket is respectively concavely provided with a first containing groove and a second containing groove which are matched with the first auxiliary magnetic steel and the second auxiliary magnetic steel, the, one end of the lead wire is respectively electrically connected with the voice coil, the other end of the lead wire respectively extends out of the fixed support, the upper end part of the fixed support is provided with a first groove, the steel ring is embedded in the first groove, the middle of the steel ring is provided with a second groove, the voice coil is positioned in the second groove, the inner side wall of the second groove is respectively convexly provided with a first abutting plate and a second abutting plate which are in one-to-one correspondence with the first secondary magnetic steel and the second secondary magnetic steel, and the first abutting plate and the second abutting plate are respectively abutted with the upper end walls of the first secondary magnetic steel and the second secondary magnetic steel without being fixed by screws, so that the assembly of the rear cover, the magnetic steel, the voice coil, the pole piece, the steel ring, the fixed support, the vibrating diaphragm and the middle paste is convenient and rapid, the efficiency is improved, the structure is compact, the cost is low, the fixation is firm, the problem of displacement, the practicability is strong.

Drawings

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

Fig. 1 is a schematic overall structural diagram of a compact micro speaker according to an embodiment of the present invention;

fig. 2 is a schematic view of another perspective of the compact micro-speaker according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a compact micro-speaker according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an internal structure of a compact micro speaker according to an embodiment of the present invention.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a compact structure's miniature speaker.

As shown in fig. 1 to 4, in an embodiment of the present invention, the compact micro speaker includes a back case 100, a main magnet 200, an auxiliary magnet 300, a voice coil 400, a pole piece 500, a steel ring 600, a fixing bracket 700, and a lead 401, wherein the main magnet 200 and the auxiliary magnet 300 are both bonded and fixed on an upper end surface of the back case 100, the fixing bracket 700 is detachably covered on the back case 100, the auxiliary magnet 300 includes a first auxiliary magnet 301 and a second auxiliary magnet 302, the first auxiliary magnet 301 and the second auxiliary magnet 302 are respectively disposed on an outer side wall of the main magnet 200 at intervals, a mounting groove capable of accommodating the voice coil 400 is formed between an outer side wall of the main magnet 200 and an inner side wall of the first auxiliary magnet 301 and the second auxiliary magnet 302, the voice coil 400 is embedded in the mounting groove, the pole piece 500 is adhered on the upper end wall of the main magnet 200, the steel ring 600 lid is located the upper end setting of fixed bolster 700, just the steel ring 600 with the up end butt of vice magnet steel 300 sets up, the lower terminal edge of fixed bolster 700 concave respectively be equipped with first storage tank 701 and the second storage tank 702 of the vice magnet steel 302 looks adaptation of first pair magnet steel 301 and second, the vice magnet steel 302 of first pair magnet steel 301 and second inlays respectively and locates set up in first storage tank 701 and the second storage tank 702, the one end of lead wire 401 respectively with the voice coil loudspeaker voice coil 400 electricity is connected, the other end of lead wire 401 stretches out respectively the fixed bolster 700 sets up outward.

Specifically, the upper end of fixed bolster 700 is equipped with a first recess 703, steel ring 600 inlays to be located set up in the first recess 703, the centre of steel ring 600 is equipped with a second recess 603, voice coil 400 is located set up in the second recess 603, just the inside wall of second recess 603 respectively protruding be equipped with first butt joint board 601 and the second butt joint board 602 of the vice magnet steel 302 one-to-one of first pair magnet steel 301 and second, just first butt joint board 601 and second butt joint board 602 respectively with the upper end wall butt setting of the vice magnet steel 302 of first pair magnet steel 301 and second.

Specifically, two inner side walls of the first groove 703 are respectively provided with a protruding buckle protrusion 7031 in a protruding manner, and two outer side edges of the first abutting plate 601 are respectively abutted against the protruding buckle protrusion 7031.

Specifically, two ends of the upper end edge of the fixing bracket 700 are respectively provided with a wire connecting groove 704 in a concave manner, and the leads 401 are respectively arranged in the wire connecting grooves 704 in a penetrating manner.

Specifically, two ends of the inner sidewall of the second groove 603 are respectively recessed with a clearance groove 604.

Specifically, still include vibrating diaphragm 800 and paste 900 in the middle of, vibrating diaphragm 800 lid is located the upper end setting of fixed bolster 700, just the periphery of vibrating diaphragm 800 with the upper end edge bonding fixed connection of fixed bolster 700, the upper end of voice coil 400 with the lower terminal surface bonding fixed connection of vibrating diaphragm 800, paste 900 in the middle of pasting in the upper end of vibrating diaphragm 800 sets up.

Specifically, a reinforcing groove 801 is formed on the periphery of the diaphragm 800, and the reinforcing groove 801 is disposed around the outer peripheral wall of the voice coil 400 and the middle paste 900.

Specifically, the first auxiliary magnetic steel 301 and the second auxiliary magnetic steel 302 are respectively fixed in the first accommodating groove and the second accommodating groove through glue bonding.

Specifically, a limiting column 705 is protruded at each of four top corners of the upper end of the fixing bracket 700.

Specifically, the utility model is characterized in that the main magnetic steel and the auxiliary magnetic steel are both bonded and fixed on the upper end face of the back shell, the detachable cover of the fixing bracket is arranged on the back shell, the auxiliary magnetic steel comprises a first auxiliary magnetic steel and a second auxiliary magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are respectively arranged on the outer side wall of the main magnetic steel at intervals, a mounting groove for accommodating the voice coil is respectively formed between the outer side wall of the main magnetic steel and the inner side wall of the first auxiliary magnetic steel and the second auxiliary magnetic steel, the voice coil is embedded and arranged in the mounting groove, the pole piece is adhered on the upper end wall of the main magnetic steel, the steel ring cover is arranged on the upper end of the fixing bracket, the steel ring is abutted against the upper end face of the auxiliary magnetic steel, the lower end edge of the fixing bracket is respectively concavely provided with a first containing groove and a second containing groove which are matched with the first auxiliary magnetic steel and the second auxiliary, one end of the lead wire is respectively electrically connected with the voice coil, the other end of the lead wire respectively extends out of the fixed support, the upper end part of the fixed support is provided with a first groove, the steel ring is embedded in the first groove, the middle of the steel ring is provided with a second groove, the voice coil is positioned in the second groove, the inner side wall of the second groove is respectively convexly provided with a first abutting plate and a second abutting plate which are in one-to-one correspondence with the first secondary magnetic steel and the second secondary magnetic steel, and the first abutting plate and the second abutting plate are respectively abutted with the upper end walls of the first secondary magnetic steel and the second secondary magnetic steel without being fixed by screws, so that the assembly of the rear cover, the magnetic steel, the voice coil, the pole piece, the steel ring, the fixed support, the vibrating diaphragm and the middle paste is convenient and rapid, the efficiency is improved, the structure is compact, the cost is low, the fixation is firm, the problem of displacement, the practicability is strong.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A micro loudspeaker with compact structure is characterized by comprising a rear shell, main magnetic steel, auxiliary magnetic steel, a voice coil, pole pieces, a steel ring, a fixed support and a lead, wherein the main magnetic steel and the auxiliary magnetic steel are both bonded and fixed on the upper end face of the rear shell, the fixed support is detachably covered on the rear shell, the auxiliary magnetic steel comprises first auxiliary magnetic steel and second auxiliary magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are respectively arranged on the outer side wall of the main magnetic steel at intervals, a mounting groove capable of accommodating the voice coil is formed between the outer side wall of the main magnetic steel and the inner side wall of the first auxiliary magnetic steel and the inner side wall of the second auxiliary magnetic steel, the voice coil is embedded in the mounting groove, the pole pieces are adhered to the upper end wall of the main magnetic steel, the steel ring cover is arranged on the upper end portion of the fixed support, and the steel ring is abutted to the upper end face of the auxiliary magnetic steel, the lower extreme reason of fixed bolster concave respectively be equipped with first storage tank and the second storage tank of the vice magnet steel looks adaptation of first pair magnet steel and second, the vice magnet steel of first pair magnet steel and second inlays respectively to be located set up in first storage tank and the second storage tank, the one end of lead wire respectively with the voice coil loudspeaker voice coil electricity is connected, the other end of lead wire stretches out respectively the fixed bolster sets up outward.

2. The compact micro-speaker of claim 1, wherein the upper end of the fixing bracket has a first groove, the steel ring is embedded in the first groove, a second groove is disposed in the middle of the steel ring, the voice coil is disposed in the second groove, a first abutting plate and a second abutting plate corresponding to the first pair of magnetic steel and the second pair of magnetic steel one-to-one are respectively protruded from the inner side wall of the second groove, and the first abutting plate and the second abutting plate are respectively abutted against the upper end walls of the first pair of magnetic steel and the second pair of magnetic steel.

3. The compact micro-speaker of claim 2, wherein the first groove has two inner sidewalls respectively protruding with a fastening rib, and the first abutting plate has two outer edges respectively abutting with the fastening ribs.

4. The compact micro-speaker as claimed in claim 1, wherein the fixing bracket has a wire slot at each of two ends of the upper edge, and the leads are respectively inserted into the wire slots.

5. The compact micro-speaker as claimed in claim 2, wherein the second groove has two ends of the inner sidewall thereof recessed with a clearance groove.

6. The compact micro-speaker of claim 1, further comprising a diaphragm and a middle paste, wherein the diaphragm cover is disposed at the upper end of the fixing support, the periphery of the diaphragm is fixedly bonded to the upper end of the fixing support, the upper end of the voice coil is fixedly bonded to the lower end of the diaphragm, and the middle paste is disposed in the middle of the upper end of the diaphragm.

7. The compact micro-speaker as claimed in claim 6, wherein the diaphragm has a reinforcing groove formed at a periphery thereof, and the reinforcing groove is formed around the voice coil and the outer peripheral wall of the center paste.

8. The compact micro-speaker of claim 1, wherein the first and second secondary magnetic steels are fixed in the first and second receiving grooves by gluing.

9. The compact micro-speaker as claimed in claim 1, wherein a limiting pillar is protruded at each of four corners of the upper end of the fixing bracket.