CN204598234U

CN204598234U - Microspeaker

Info

Publication number: CN204598234U
Application number: CN201520275336.9U
Authority: CN
Inventors: 朱婷
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2015-08-26
Anticipated expiration: 2025-04-30

Abstract

The utility model discloses a kind of Microspeaker, relate to electro-acoustic product technical field, comprise shell, vibrational system and magnetic circuit system is contained in described shell, the both sides of the edge portion of described shell is separately installed with one for being electrically connected the shell fragment of described vibrational system and external circuit, described shell fragment is string configuration, and the two ends of described shell fragment are separately fixed at the two ends of this lateral edges of described shell, one end of described shell fragment is provided with the electrical connection section of arc convex, and the middle part of described shell fragment is provided with the overbending direction bending part contrary with the overbending direction of described electrical connection section.The shell fragment that the utility model Microspeaker solves Microspeaker in prior art uses the technical problem that the arm of force is large, elastic force is little, the use arm of force of the utility model Microspeaker shell fragment is little, shell fragment elastic force is large, and with the electrical connection good stability of pad, the reliability of loud speaker is high.

Description

Microspeaker

Technical field

The utility model relates to electro-acoustic product technical field, particularly a kind of Microspeaker.

Background technology

Microspeaker is a kind of important acoustic element in portable electric appts, spreads out of for converting the sound wave signal of telecommunication to voice signal, is a kind of energy conversion device.Microspeaker generally includes shell, contains vibrational system and magnetic circuit system in shell, shell is also provided with the electrical connector for being electrically connected vibrational system and external circuit.As shown in Figure 3, existing shell fragment 20b is substantially straight strip structure, usually Shooting Technique is adopted to be combined with shell 10, first one end of shell fragment 20b and shell 10 injection moulding are combined as a whole when shell fragment 20b installs, then shell fragment 20b is carried out twice bendings of 90 ° along the surface of shell 10, finally the other end of shell fragment 20b is stuck on shell 10.The structure of this kind of shell fragment is simple, installation procedure is simple to operation, but because structure other major part except the electrical connection section raised up of whole shell fragment 20b is substantially straight structure, shell fragment 20b is being installed to after on shell 10, its use arm of force L ＇ operationally comparatively large (as shown in Figure 5), thus make the elastic force of shell fragment 20b less, be only 0.6N, and then less in conjunction with elastic force when the electrical connection section of shell fragment is connected with pad, easily cause loose contact between electrical connection section and pad, electrical connection poor stability, the reliability of Microspeaker is low.

Utility model content

For above defect, technical problem to be solved in the utility model is to provide a kind of Microspeaker, and the shell fragment elastic force of this Microspeaker is large, is electrically connected stability high, good reliability between shell fragment with pad.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of Microspeaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, the both sides of the edge portion of described shell is separately installed with one for being electrically connected the shell fragment of described vibrational system and external circuit, described shell fragment is string configuration, and the two ends of described shell fragment are separately fixed at the two ends of this lateral edges of described shell, one end of described shell fragment is provided with the electrical connection section of arc convex, and the middle part of described shell fragment is provided with the overbending direction bending part contrary with the overbending direction of described electrical connection section.

Wherein, the angle of described bending part is 90 ° ~ 175 °.

Wherein, the angle of described bending part is 125 °.

Wherein, described shell fragment combines on the housing near one end injection moulding of described bending part, and one end that described shell fragment is provided with described electrical connection section clamps on the housing.

Wherein, on the end face of described shell, the position of corresponding described shell fragment is provided with an installed surface, described installed surface is cascaded surface, and the higher plane in described installed surface position is near described shell fragment one end with the injection moulding of described shell phase, and described bending part is in the height intersection of described installed surface.

After have employed technique scheme, the beneficial effects of the utility model are:

The bending part that overbending direction is contrary with the overbending direction of electrical connection section is provided with in the middle part of shell fragment due to the utility model Microspeaker, bending part be arranged so that shell fragment is being installed to after on shell, the position of its bending part can contact with the surface of shell, when the electrical connection section of shell fragment contacts with pad, shell fragment is pressed down, the position that now bending part of shell fragment contacts with case surface just defines a fulcrum O, as shown in Figure 4, thus shorten the arm of force of shell fragment greatly, it is made to use the length of arm of force L to be less than the length of use arm of force L ＇ (as shown in Figure 5) of shell fragment of the prior art greatly, add the elastic force of shell fragment, the elastic force of shell fragment can be made to be increased to 0.9N by 0.6N of the prior art, elastic force increase makes the adhesion between the electrical connection section of shell fragment and pad increase, thus the electrical connection stability effectively added between electrical connection section and pad, and then improve the reliability of Microspeaker.

In sum, the shell fragment that the utility model Microspeaker solves Microspeaker in prior art uses the technical problem that the arm of force is large, elastic force is little, and the use arm of force of the utility model Microspeaker shell fragment is little, and shell fragment elastic force is large, with the electrical connection good stability of pad, the reliability of loud speaker is high.

Accompanying drawing explanation

Fig. 1 is the structural representation-illustrate only shell and shell fragment of the utility model Microspeaker;

Fig. 2 is the shell fragment installation procedure figure of the utility model Microspeaker;

Fig. 3 is the shell fragment installation procedure figure of Microspeaker in prior art;

Fig. 4 is the sign picture of the use arm of force of the shell fragment of the utility model Microspeaker;

Fig. 5 is the sign picture of the use arm of force of the shell fragment of Microspeaker in prior art;

In figure: 10, shell, 12, installed surface, 20a, shell fragment, 20b, shell fragment, 22, bending part, 24, electrical connection section, 26, clamping part.

Embodiment

Below in conjunction with drawings and Examples, set forth the utility model further.

As shown in Figure 1, a kind of Microspeaker is rectangular configuration, comprises the shell 10 of rectangular configuration, contains vibrational system and magnetic circuit system (not shown) in shell 10.The both sides of the edge portion that shell 10 is relative is separately installed with a shell fragment 20a, and shell fragment 20a is for being electrically connected the circuit of vibrational system and loud speaker outside.

As Fig. 1 and Fig. 2 jointly shown in, shell fragment 20a is string configuration, one end injection moulding of its one end and this lateral edges of shell 10 is combined as a whole, its other end is provided with the electrical connection section 24 of arc convex, electrical connection section 24 is for being electrically connected with the pad on loud speaker external circuit, and the outer end of electrical connection section 24 is connected with the clamping part 26 for clamping the other end being fixed on this lateral edges of shell.At the middle part of shell fragment 20a, position between the injection molding end of i.e. electrical connection section 24 and shell fragment 20a is provided with a bending part 22, the overbending direction of bending part 22 is contrary with the overbending direction of electrical connection section 24, namely as shown in the installation diagram of the centre of Fig. 2, down, and the arc opening of bending part 22 upward for the arc opening of electrical connection section 24.The angle a of bending part 22 is 90 ° ~ 175 °, and present embodiment preferably this angle a is 125 °.

As Fig. 1 and Fig. 2 jointly shown in, on the upper surface of shell 10, the position of corresponding shell fragment 20a is provided with an installed surface 12, installed surface 12 is cascaded surface, it is higher with the surface location of one end of shell 10 phase injection moulding near shell fragment 20a, its surface location near one end of electrical connection section 24 is lower, position is lower herein can dodge shell fragment 20a when shell fragment 20a is subject to downward pressure, ensure that the elasticity of shell fragment 20a.The wedge angle position of bending part 22 is positioned at the height intersection of installed surface 12, i.e. the position that is connected of two cascaded surfaces of installed surface 12.

As shown in Figure 2 and Figure 4, when mounting elastic sheet 20a, first the injection molding end of shell fragment 20a is combined with shell 10 injection moulding, then twice bendings of 90 ° are carried out along the surface of shell 10, finally the clamping part 26 being positioned at the shell fragment 20a other end is snapped fitted to the other end of shell 10, its installation method is identical with prior art, but the utility model is by arranging bending part 22 at the middle part of shell fragment 20a, be installed to after on shell 10 at shell fragment 20a, the position of bending part 22 can contact with the installed surface 12 of shell 10, when the electrical connection section 24 of shell fragment 20a is connected with the pad of loud speaker external circuit, shell fragment 20a is pressed down, the position that now bending part 22 contacts with installed surface 12 just defines a fulcrum O, now the use arm of force L of shell fragment is just only the length from fulcrum O to electrical connection section 24, reduce owing to using arm of force L, thus add the elastic force of shell fragment 20a greatly, the elastic force of shell fragment 20a is made to be increased to 0.9N by 0.6N of the prior art, elastic force increase makes adhesion between the electrical connection section 24 of shell fragment 20a and the pad of loud speaker external circuit increase, thus effectively add the stability be electrically connected between electrical connection section 24 and the pad of loud speaker external circuit, and then improve the reliability of Microspeaker, improve the quality of Microspeaker.

The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion made, all drop within protection range of the present utility model.

Claims

1. Microspeaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, the both sides of the edge portion of described shell is separately installed with one for being electrically connected the shell fragment of described vibrational system and external circuit, described shell fragment is string configuration, and the two ends of described shell fragment are separately fixed at the two ends of this lateral edges of described shell, one end of described shell fragment is provided with the electrical connection section of arc convex, it is characterized in that, the middle part of described shell fragment is provided with the overbending direction bending part contrary with the overbending direction of described electrical connection section.

2. Microspeaker according to claim 1, is characterized in that, the angle of described bending part is 90 ° ~ 175 °.

3. Microspeaker according to claim 2, is characterized in that, the angle of described bending part is 125 °.

4. the Microspeaker according to the arbitrary claim of claims 1 to 3, is characterized in that, described shell fragment combines on the housing near one end injection moulding of described bending part, and one end that described shell fragment is provided with described electrical connection section clamps on the housing.

5. Microspeaker according to claim 4, it is characterized in that, on the end face of described shell, the position of corresponding described shell fragment is provided with an installed surface, described installed surface is cascaded surface, the higher plane in described installed surface position is near described shell fragment one end with the injection moulding of described shell phase, and described bending part is in the height intersection of described installed surface.