CN210381236U - Mounting device for microphone assembly and novel microphone assembly - Google Patents
Mounting device for microphone assembly and novel microphone assembly Download PDFInfo
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- CN210381236U CN210381236U CN201921058953.8U CN201921058953U CN210381236U CN 210381236 U CN210381236 U CN 210381236U CN 201921058953 U CN201921058953 U CN 201921058953U CN 210381236 U CN210381236 U CN 210381236U
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Abstract
The embodiment of the utility model discloses installation device of microphone subassembly is applied to microphone technical field, and this installation device includes the die block of presetting distance department with the back plate restriction in the microphone subassembly at the opening apart from the ring cavity body in this microphone subassembly, and this opening part is embedded to this die block, and the upper surface of this die block is higher than this open-ended and should be preset distance department, and this back plate inlays in the cavity of this ring cavity body, and the lower surface of this back plate contacts with the upper surface of this die block. The embodiment of the utility model provides a still disclose a novel microphone subassembly, this sensor module's installation device and novel microphone subassembly can improve the yields of microphone equipment.
Description
Technical Field
The utility model belongs to the technical field of the microphone, especially, relate to a mounting device and novel microphone of microphone subassembly.
Background
The microphone is an energy conversion device for converting a sound signal into an electric signal, and in the automatic assembly process of the microphone, a back plate is embedded into a cavity, and the step requires that the back plate is embedded and pressed to the lower end plane of a plastic cavity.
However, due to the plastic processing characteristics, two ends of the annular cavity are slightly flared actually, the back plate is just positioned at the position of the flare after being embedded into the bottom of the plastic cavity, the back plate is loosely matched with the plastic cavity at the moment, and is not tightly matched with the plastic cavity, and the back plate falls off from the cavity under the vibration action of an automatic production line, so that a defective product is formed, and the product percent of pass is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an installation dress device and novel microphone subassembly of microphone subassembly aims at solving in the installation, and the vibration effect is down because of the problem that the defective products rate that the back plate drops the production is high in the cavity.
An embodiment of the utility model provides a microphone subassembly's installation device, microphone subassembly includes the back plate and has the open-ended ring cavity, installation device includes: the bottom die is used for limiting the back plate to be at a preset distance from the opening;
the bottom die is embedded into the opening, and the upper surface of the bottom die is higher than the preset distance of the opening;
the back plate is embedded in the cavity of the ring cavity, and the lower surface of the back plate is in contact with the upper surface of the bottom die.
Further, the opening is a horn-shaped opening;
the bottom die comprises an embedding part, the shape of the embedding part is matched with that of the horn-shaped opening, and the embedding part is fixedly embedded in the horn-shaped opening;
the upper surface of embedding portion is a plane, perhaps, the upper surface of embedding portion is two planes, two planes are located respectively loudspeaker form opening's two inboard departments.
Further, the embedding part is made of soft materials, and the embedding part is fixed at the horn-shaped opening in an extruding mode.
Furthermore, the embedding part is made of hard materials and is fixedly adhered to the horn-shaped opening.
Further, the die block still includes the bottom, the bottom includes two extensions that extend in the embedding portion, the upper surface of extension with the bottom surface of ring cavity contacts.
Further, the lower surface of the back plate is provided with a first positioning device, the upper surface of the bottom die is provided with a second positioning device, and the first positioning device and the second positioning device are mutually clamped.
Furthermore, the first positioning device is a convex object, and the second positioning device is a groove; or the first positioning device is a groove, and the second positioning device is a protrusion.
Further, the preset distance is 0.05 mm-0.15 mm.
The embodiment of the utility model provides a still provide a novel microphone subassembly, include: a ring cavity with an opening and a back plate constrained at a preset distance from the opening by a mounting device as described above, the back plate being greater than two holes.
Further, the back plate is a four-hole back plate.
From the aforesaid the embodiment of the utility model provides a can know, adopt to set up the die block, install the back plate from the position of the exit default distance of ring cavity for the back plate can not drop from the ring cavity because of the vibration in the assembly, improves the yields of assembly, and the yields can reach 99.8% in assembling process.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic cross-sectional view of a mounting device for a microphone assembly and a novel microphone assembly provided by an embodiment of the present invention;
fig. 2 is a schematic cross-sectional exploded view of a microphone assembly mounting device and a novel microphone assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a mounting device of a novel microphone assembly provided by an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a mounting device for a microphone assembly according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a mounting device for a microphone assembly and a novel microphone assembly provided by an embodiment of the present invention. The novel microphone assembly is part of a microphone, which may in particular be a microphone. The novel microphone assembly, together with other components, may be assembled into a microphone.
Referring to fig. 2, fig. 2 is an exploded view of the mounting apparatus of the microphone assembly shown in fig. 1 and the novel microphone assembly.
The novel microphone assembly includes a backplate 20 and a ring cavity 30. The ring cavity 30 has an opening 40.
The mounting means of the microphone assembly includes a bottom mold 10 that limits the back plate 20 at a predetermined distance from the opening 40.
The bottom mold 10 is inserted into the opening 40, and the upper surface of the bottom mold 10 is higher than the opening 40 by a predetermined distance h. Specifically, the preset distance h may be 0.05mm to 0.15mm (millimeter), and preferably, the preset distance is 0.1 mm.
The back plate 20 is embedded in the cavity of the ring cavity 30, and the lower surface of the back plate 20 contacts with the upper surface of the bottom mold 10.
The back plate 20 is embedded and pressed on the upper plane of the bottom die 10 from top to bottom by the embedding die 50 in the cavity, and due to the existence of the bottom die 10, the back plate 20 is fixed at the lower end of the ring cavity 30 at a position which is 0.05 mm-0.15 mm away from the opening 40, and at this time, the back plate 20 and the ring cavity 30 are in a tightly matched state. The back plate 20 will not fall off from the opening 40 of the ring cavity 30 even if vibration is generated during the assembly process, thereby avoiding the occurrence of defective products.
Further, the backplate 20 is a backplate larger than two holes, such as a four hole backplate. The back plate with a large number of holes can reduce the damping generated during press-in, the press-in precision is easier to control, and the back plate 20 is easier to push to the position where the distance from the lower end of the ring cavity 30 to the opening 40 is 0.05 mm-0.15 mm.
The ring cavity 30 may be made of plastic.
The opening 40 may be a straight cylindrical opening, or may be an opening having an oblique angle, such as a trumpet-shaped opening.
Further, referring to fig. 3, fig. 3 is a schematic structural view of the bottom mold 10 of the mounting apparatus in fig. 1 and 2. The bottom mold 10 comprises an insert 11 and a bottom 12. The shape of the insert portion 11 matches the shape of the opening 40, and the insert portion 11 can be inserted into the opening 40. The opening 40 in fig. 1 and 2 is exemplified by a horn-shaped opening, but may be an opening having another shape, for example, a straight tube shape. The shape of the embedding part 11 is matched with the shape of the trumpet-shaped opening 40 corresponding to the trumpet-shaped opening, and the embedding part 11 is fixedly embedded in the trumpet-shaped opening 40. The bottom 12 includes two extensions 13 extending from the insert 11, the upper surfaces of the extensions 13 contacting the bottom surface of the ring cavity 30.
The upper surface of the insert portion 11 in the above figures is a flat surface. The upper surface of the insert part 11 may also be two flat surfaces, i.e. the insert part 11 is divided into two parts, which are located at two inner sides of the trumpet-shaped opening 40, respectively, as shown in particular in fig. 4. Compared with the embedding part with one plane, the embedding parts with two planes have simpler structures and save more materials.
Further, the embedding part 11 may be made of soft material, and is fixed at the trumpet-shaped opening 40 by extrusion;
the insertion portion 11 may be made of a hard material, and may be removably fixed to the flared opening 40, so that the insertion portion 11 is easily peeled off.
Further, the lower surface of the back plate 20 is provided with a first positioning device, the upper surface of the bottom mold 10 is provided with a second positioning device, and the first positioning device and the second positioning device are mutually clamped and used for assisting the back plate 20 and the bottom mold 10 to be in contact with each other in place, so that the success rate of contacting the back plate 20 with the bottom mold 10 is improved. The first positioning device may be disposed at the center of the lower surface of the back plate 20, or may be disposed at a non-central position. The second positioning device is matched with the first positioning device in position.
Specifically, the first positioning device is a protrusion, and the second positioning device is a groove; or the first positioning device is a groove, and the second positioning device is a protrusion. The convex object and the groove are mutually clamped.
The back plate 20 is pressed downward by a high-precision insert press device driven by a servo linear motor 50. The bottom die 10 is a high-precision bottom die which adopts a laser processing technology. In this embodiment, the embedding precision and the bottom die precision of the back plate 20 are both controlled within the tolerance range of 0.05mm, so that the high yield of the microphone assembly is realized, and the quality and the efficiency of the microphone assembly are improved.
Further, the back plate 20 is embedded and pressed to a position which is away from the opening 40 by a preset distance h, after the bottom die 10 is removed, the novel microphone assembly (namely the ring cavity 30 and the back plate 20 embedded into the ring cavity 30) is conveyed to the next assembly process through an automatic line vibration conveyor belt, the vibration conveyor belt vibrates to vibrate the back plate 20 to the opening 40 without falling out of the opening 40, the microphone is integrally assembled at the next assembly process, specifically, a copper ring, a diaphragm and a Printed Circuit Board (PCB) are placed in the back plate 20 and the ring cavity 30 which are embedded into a whole, a shell is packaged, and the assembly is completed.
The embodiment of the utility model provides an in, adopt and set up the die block, install the back plate and predetermine the position of distance from the exit of ring cavity for the back plate can not drop from the ring cavity because of the vibration in the assembly, improves the yields of assembly, and the yields can reach 99.8% in assembling process.
The embodiment of the utility model provides a still provide a novel microphone subassembly, including having open-ended ring cavity and through as before installation device ann limit predetermine the back plate of distance department at the opening apart from ring cavity, the back plate is for being greater than the back plate in two holes, specifically, the back plate is four holes back plate.
The novel microphone assembly in the embodiment adopts the back plate which is larger than the two holes, can reduce damping generated when the back plate is pressed in, and the pressing-in precision is easier to control, so that the back plate is easier to push and press the position of the lower end of the ring cavity away from the preset distance of the opening. When the equipment, owing to adopt and set up the die block, install the back plate in the position apart from the exit of ring cavity preset distance for the back plate can not drop from the ring cavity because of the vibration in the assembly, improves the yields of assembly, and the yields can reach 99.8% in the assembling process. In addition, the novel microphone assembly has the advantages of simple and reliable process structure, good stability, improved frequency response, sensitivity and consistency of acoustic indexes, simple manufacturing process and low cost, and is suitable for mass production.
The above is right the utility model provides a microphone subassembly's installation device and novel microphone subassembly's description, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and application scope, to sum up, this description content should not be understood as right the utility model discloses a restriction.
Claims (10)
1. A mounting arrangement for a microphone assembly, the microphone assembly including a backplate and a ring cavity having an opening, the mounting arrangement comprising: the bottom die is used for limiting the back plate to be at a preset distance from the opening;
the bottom die is embedded into the opening, and the upper surface of the bottom die is higher than the preset distance of the opening;
the back plate is embedded in the cavity of the ring cavity, and the lower surface of the back plate is in contact with the upper surface of the bottom die.
2. The mounting arrangement for a microphone assembly as defined in claim 1, wherein the opening is a horn-shaped opening;
the bottom die comprises an embedding part, the shape of the embedding part is matched with that of the horn-shaped opening, and the embedding part is fixedly embedded in the horn-shaped opening;
the upper surface of embedding portion is a plane, perhaps, the upper surface of embedding portion is two planes, two planes are located respectively loudspeaker form opening's two inboard departments.
3. The microphone assembly mounting device as defined in claim 2, wherein the insertion portion is made of a soft material, and the insertion portion is press-fitted to the horn-shaped opening.
4. The microphone assembly mounting device as claimed in claim 3, wherein the insertion portion is made of a hard material, and the insertion portion is fixed to the horn-shaped opening by adhesion.
5. A microphone assembly mounting arrangement as claimed in any one of claims 2 to 4, wherein the base mold further includes a bottom portion, the bottom portion including two extension portions extending outwardly from the insert portion, an upper surface of the extension portions contacting a bottom surface of the ring cavity.
6. The microphone assembly mounting device as claimed in claim 5, wherein the back plate has a first positioning means on a lower surface thereof, and a second positioning means on an upper surface thereof, the first and second positioning means being engaged with each other.
7. The mounting arrangement for a microphone assembly as defined in claim 6, wherein the first locating means is a protrusion and the second locating means is a recess;
or the first positioning device is a groove, and the second positioning device is a protrusion.
8. The microphone assembly mounting apparatus as claimed in claim 7, wherein the predetermined distance is 0.05mm to 0.15 mm.
9. A novel microphone assembly comprising a ring cavity having an opening and a backplate constrained at a predetermined distance from the opening by a mounting device according to any one of claims 1 to 8;
the back plate is larger than two holes.
10. The novel microphone assembly of claim 9 wherein the backplate is a four-hole backplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921058953.8U CN210381236U (en) | 2019-07-08 | 2019-07-08 | Mounting device for microphone assembly and novel microphone assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921058953.8U CN210381236U (en) | 2019-07-08 | 2019-07-08 | Mounting device for microphone assembly and novel microphone assembly |
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| CN210381236U true CN210381236U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418227A (en) * | 2019-07-08 | 2019-11-05 | 东莞市乐友电声科技有限公司 | The mounting device of microphone assembly and novel microphone assembly |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418227A (en) * | 2019-07-08 | 2019-11-05 | 东莞市乐友电声科技有限公司 | The mounting device of microphone assembly and novel microphone assembly |
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