CN105979445B

CN105979445B - Loudspeaker

Info

Publication number: CN105979445B
Application number: CN201610495391.8A
Authority: CN
Inventors: 金晓东; 李志�
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2016-06-29
Filing date: 2016-06-29
Publication date: 2021-05-07
Anticipated expiration: 2036-06-29
Also published as: CN105979445A

Abstract

The invention discloses a loudspeaker, which relates to the technical field of electroacoustic products and comprises a shell basin frame, and a vibration system and a magnetic circuit system which are fixed on the basin frame, wherein an electric connecting terminal is fixed on the side wall of the basin frame, a balancing weight is arranged on the side wall of the basin frame opposite to the electric connecting terminal, and the balancing weight is combined with the basin frame into a whole through an injection molding process. The loudspeaker solves the technical problems of easy resonance, poor reliability and the like of the loudspeaker in the prior art, does not generate resonance, and has good acoustic performance, high reliability, good product consistency, high production efficiency and low production cost.

Description

Loudspeaker

Technical Field

The invention relates to the technical field of electroacoustic products, in particular to a loudspeaker.

Background

The loudspeaker is commonly called a loudspeaker, is used for completing the conversion between an electric signal and a sound signal, and is an energy conversion device. The loudspeaker generally comprises a frame, and a vibration system and a magnetic circuit system which are fixed on the frame, wherein the magnetic circuit system comprises a U/T iron, a magnet and a washer, the vibration system comprises a vibrating diaphragm and a voice coil which are combined together, and the end part of the voice coil is positioned in a magnetic gap of the magnetic circuit system. Still be fixed with the electric connection terminal who is used for electric connection voice coil loudspeaker voice coil and speaker external circuit on the lateral wall of basin frame, because electric connection terminal is located one side of basin frame usually to lead to the both sides unbalanced weight of speaker, at the in-process of speaker work, easily produce the resonance, lead to the acoustic performance reduction of speaker, can't satisfy the design requirement.

Disclosure of Invention

In view of the above drawbacks, the technical problem to be solved by the present invention is to provide a speaker, which does not generate resonance, and has good acoustic performance, high reliability, high production efficiency, and low production cost.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a loudspeaker, includes the basin frame and fixes vibration system and magnetic circuit on the basin frame, be fixed with electric connection terminal on the lateral wall of basin frame, on the lateral wall of basin frame with the position that electric connection terminal is relative is equipped with the balancing weight, the balancing weight through the technology of moulding plastics with the basin frame combines as an organic whole.

The side wall of the basin stand is provided with an embedded groove, and the balancing weight is embedded in the embedded groove.

Wherein, the embedded groove is positioned at the outer side of the basin stand.

Wherein, the both ends of balancing weight respectively are equipped with the hem of inwards buckling, two the hem all buries in the injection molding material of basin frame.

Wherein, the edge parts of the upper side and the lower side of the balancing weight are all buried in the injection molding material of the basin frame.

The basin stand is provided with a blind hole, and a through hole matched with the blind hole is formed in the position, corresponding to the blind hole, of the balancing weight.

The basin frame is of a circular ring structure, the embedded groove extends along the circumferential direction of the basin frame, and the balancing weight is in an arc shape matched with the embedded groove.

The magnetic circuit system comprises a magnetic conduction component, and a magnet and a washer which are sequentially fixed on the magnetic conduction component.

The magnetic conduction component is U iron or T iron, and the U iron or the washer is fixed on the inner wall of the basin stand.

The inner wall of the basin stand is provided with a convex positioning boss, and the upper surface of the U-shaped iron or the washer is fixed with the lower surface of the positioning boss.

After the technical scheme is adopted, the invention has the beneficial effects that:

because the position of the side wall of the basin frame of the loudspeaker, which is opposite to the electric connecting terminal, is provided with the balancing weight, the balancing weight is combined with the basin frame into a whole through an injection molding process. The balancing weight is arranged on one side opposite to the electric connecting terminal, so that the balancing function is achieved, the weights on two sides of the loudspeaker are balanced, and the resonance condition can not occur when the loudspeaker works, so that the acoustic performance of the loudspeaker can meet the design requirement; meanwhile, the balancing weight and the basin frame are combined through an injection molding process, and compared with manual bonding, the injection molding process is low in operation difficulty, high in production efficiency and firmer in combination, so that the loudspeaker cannot generate resonance, and is good in acoustic performance, high in reliability, high in production efficiency and low in production cost.

Because the two ends of the balancing weight are respectively provided with the folded edges which are bent inwards, the two folded edges are buried in the injection molding material of the basin frame. Two hems are all buried in the injection molding material, and the effectual area of contact that has increased between balancing weight and the basin frame has improved the bonding strength between the two, has reduced the risk that the balancing weight drops from the basin frame, great improvement the reliability of speaker.

Because the edge parts of the upper side and the lower side of the balancing weight are all buried in the injection molding material of the basin frame, the structure further enhances the bonding strength between the balancing weight and the basin frame, stops the possibility that the balancing weight falls off from the basin frame, and further improves the reliability of the loudspeaker.

Because the basin frame is provided with the blind hole, the position of the counterweight block corresponding to the blind hole is provided with the through hole matched with the blind hole. The blind hole and the through hole are matched to play a role in positioning during injection molding, the sealing performance of the loudspeaker is guaranteed while the positioning accuracy of the balancing weight is guaranteed, the operation difficulty of the injection molding process is reduced, the consistency of products is guaranteed, and the performance of the loudspeaker is improved.

Because be equipped with convex location boss on the inner wall of basin frame, the upper surface of U iron or china department is fixed mutually with the lower surface of location boss, and the location boss has played the positioning action, has still increased the area of contact between magnetic circuit and the basin frame when having improved the uniformity of product to improve the combination firmness between magnetic circuit and the basin frame, the effectual risk that reduces magnetic circuit and drop from the basin frame, improved the reliability and the life of product.

In conclusion, the loudspeaker solves the technical problems that the loudspeaker in the prior art is easy to resonate, poor in reliability and the like, cannot resonate, and is good in acoustic performance, high in reliability, good in product consistency, high in production efficiency and low in production cost.

Drawings

Fig. 1 is an exploded view of a first embodiment of a loudspeaker according to the present invention;

FIG. 2 is an assembled view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

in the figure: 10. basin frame, 12, embedded groove, 14, blind hole, 16, location boss, 18, bordure, 20, vibrating diaphragm, 30, balancing weight, 32, through-hole, 34, hem, 40, U iron, 50, electric connection terminal.

Detailed Description

The invention is further illustrated below with reference to the figures and examples.

The inner side referred to in this specification means a side close to the center of the micro-speaker, and the outer side means a side far from the center of the micro-speaker; the azimuth referred to in this specification means a direction in which the vibration system is provided, and the azimuth means a direction in which the magnetic circuit system is provided.

The first embodiment is as follows:

as shown in fig. 1 and 2, the loudspeaker includes a ring-shaped frame 10, a vibration system is fixed at the upper end of the frame 10, and a magnetic circuit system is fixed at the lower end of the frame 10.

As shown in fig. 1, 2 and 3, the vibration system 20 includes a diaphragm 20 fixed on the upper end surface of the frame 10, and a voice coil (not shown) is fixed on the inner side of the diaphragm 20, and the lower end of the voice coil is located in the magnetic gap of the magnetic circuit system. Be fixed with the electric connection terminal 50 that is used for electric connection voice coil loudspeaker voice coil and external circuit on the lateral wall of basin frame 10, still be equipped with balancing weight 30 on the lateral wall of basin frame 10, balancing weight 30 sets up with electric connection terminal 50 relatively, sets up respectively in the both sides of the central line of basin frame 10 promptly, and balancing weight 30 plays the balancing act for the weight of speaker both sides is equivalent.

As shown in fig. 1 and fig. 3, the frame 10 is a circular structure, the position of the frame 10 where the weight block 30 is disposed is provided with an embedded groove 12, in this embodiment, preferably, the embedded groove 12 is disposed on the outer side of the sidewall of the frame 10, and the weight block 30 is embedded in the embedded groove 12. The embedded groove 12 is an arc-shaped groove extending along the circumferential direction of the basin stand 10, and the balancing weight 30 is of an arc-shaped structure and is matched with the embedded groove 12.

As shown in fig. 1 and 3, the weight 30 is integrated with the frame 10 by injection molding. The both ends of balancing weight 30 respectively are equipped with hem 34 of buckling inwards, two hem 34 all bury in the injection molding material of basin frame 10 after the completion of moulding plastics, the upper and lower both sides edge of embedded groove 12 all is equipped with 18 of borduring that extend in opposite directions, two 18 of borduring all are located the outside of balancing weight 30, thereby also all bury the upper and lower both sides edge of balancing weight 30 in the injection molding material after the completion of moulding plastics, the four sides edge of balancing weight 30 all buries in the injection molding material, great reinforcing the bonding strength between balancing weight 30 and the basin frame 10, make balancing weight 30 can not drop from basin frame 10.

As shown in fig. 1, two blind holes 14 are arranged in the embedded groove 12 of the basin stand 10, a through hole 32 is respectively arranged on the counterweight block 30 corresponding to the two blind holes 14, the aperture of the through hole 32 is matched with that of the blind hole 14, and the positioning function can be achieved when the injection molding is carried out.

As shown in fig. 1 and 3, the magnetic circuit system includes a magnetic conductive component, in this embodiment, the magnetic conductive component is a U-iron 40, and a magnet and a washer (not shown in the figure) are sequentially fixed inside the U-iron 40. A magnetic gap is arranged between the magnet and the washer and the side wall of the U-shaped iron 40, and the end part of the voice coil is positioned in the magnetic gap. The side wall of the U-shaped iron 40 is fixed on the inner wall of the basin frame 10, the inner wall of the basin frame 10 is provided with a convex positioning boss 16, the positioning boss 16 is positioned above the U-shaped iron 40, and the upper surface of the side wall of the U-shaped iron 40 is fixed with the lower surface of the positioning boss 16.

Example two:

this embodiment is substantially the same as the first embodiment, except that:

the magnetic conduction component is T iron, the edge part of the T iron is sequentially fixed with an annular magnet and a washer, and a magnetic gap is arranged between the magnet and the washer and a central column of the T iron. The washer is fixed on the inner wall of the basin stand, and the upper surface of the washer is fixedly combined with the lower surface of the positioning boss.

According to the loudspeaker, the balancing weight with an integrated structure is arranged on the basin frame, so that the resonance of the loudspeaker is effectively prevented, the acoustic performance of the loudspeaker is ensured, and meanwhile, the loudspeaker is high in reliability, high in production efficiency and low in production cost.

The above embodiments are merely examples of technical solutions for disposing an integral structural weight on a frame, and the structure of a speaker is not limited to the above structures, and the technical solutions of the present invention can be applied to any speaker having an electrical connection terminal on one side of the frame.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.

Claims

1. The loudspeaker comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixed on the basin frame, and an electric connecting terminal is fixed on the side wall of the basin frame.

2. The loudspeaker of claim 1, wherein the side wall of the frame is provided with an embedded groove, and the balancing weight is embedded in the embedded groove.

3. The speaker of claim 2, wherein the embedded groove is located outside the frame.

4. The loudspeaker of claim 3, wherein each end of said weight member has an inwardly bent flange, both said flanges being embedded in the molding material of said frame.

5. The loudspeaker of claim 4, wherein the upper and lower edges of the weight are embedded in the molding compound of the frame.

6. The loudspeaker according to claim 5, wherein the frame is provided with a blind hole, and the counterweight block is provided with a through hole matched with the blind hole at a position corresponding to the blind hole.

7. The loudspeaker according to any one of claims 2 to 6, wherein the frame is a circular ring structure, the embedded groove extends along the circumferential direction of the frame, and the weight block is in an arc shape matched with the embedded groove.

8. The loudspeaker of claim 7, wherein the magnetic circuit system comprises a magnetic conductive member, and a magnet and a washer sequentially fixed to the magnetic conductive member.

9. The loudspeaker of claim 8, wherein the magnetic conductive member is a U-iron or a T-iron, and the U-iron or the washer is fixed on the inner wall of the frame.

10. The loudspeaker according to claim 9, wherein a raised positioning boss is provided on the inner wall of the frame, and the upper surface of the U-iron or washer is fixed to the lower surface of the positioning boss.