CN215420772U - Earphone acoustic test sealing and fixing device - Google Patents

Abstract

The utility model provides a sealed fixing device for an acoustic test of an earphone, which comprises a fixing module and a movable module, wherein the fixing module comprises a fixing substrate and a simulation ear, the fixing substrate is provided with a first positioning part, a first sound channel and a communication connecting device, and a sound receiving end of a sound collecting channel of the simulation ear is sealed in the first sound channel; the circulating module comprises a circulating substrate and an earphone positioning component, the circulating substrate is provided with a second positioning component and a second sound channel, the earphone positioning component comprises an imitated groove, and the imitated groove is communicated with the second sound channel in a sealing manner; the second positioning part is matched with the first positioning part to detachably arrange the circulating module on the fixed module, and the first sound channel and the second sound channel are communicated in a sealing mode to form a sound transmission sound channel between the earphone and the simulation ear. The utility model can adopt automatic equipment to transport the transferable module, so that the module can be transferred among different testing workstations without repeatedly dismounting earphone products, thereby greatly improving the working efficiency and reducing the labor cost.

Description

Earphone acoustic test sealing and fixing device

Technical Field

The utility model belongs to the technical field of earphone acoustic performance testing, and particularly relates to an earphone sealing and fixing device used in earphone acoustic performance testing.

Background

With the wide application of portable electronic products such as high-quality smart phones and pads, people have higher and higher requirements on acoustic parameters of earphones which can be used in cooperation with the portable electronic products, and therefore after the earphones are assembled into finished products, the acoustic performance of a loudspeaker, the acoustic performance of a microphone and the electrical performance of the microphone need to be tested. During testing, the product needs to be positioned on a fixture.

In the prior art, a sealing and fixing device for an earphone acoustic test comprises a base plate, a sealing support piece (namely a sealing holder) arranged on the base plate and used for sealing and supporting an earphone, and a simulation ear arranged on the base plate, wherein a silica gel block for sealing is arranged on the sealing support piece, a simulation sealing groove is formed on the silica gel block, the earphone is embedded into the simulation sealing groove with an earphone plug part (namely an earphone cap) facing downwards, and an earphone tail pipe is exposed out of the silica gel block; simultaneously, be formed with the sound channel on the bottom plate, the one end of sound channel runs through to in the profile modeling seal groove, the other end runs through the bottom plate in order to communicate with the sealed of the end of receiving sound of emulation ear, the earphone product is placed behind sealed support piece, it is fixed to push down the earphone by the piston rod of cylinder, make its and profile modeling seal groove seal fit simultaneously, and then make the sound channel between earphone and the emulation ear realize sealedly, the earphone starts, sound is passed to the emulation ear by the sound channel, carry out the sound admission to the earphone by the emulation ear, emulation ear and test equipment communication connection, accomplish the sound test by test equipment.

The prior art has the following defects and shortcomings:

1. because the earphone acoustic test production line is generally provided with a plurality of test workstations, each test workstation is provided with the sealing fixing device, when the earphone circulates among different test workstations, the earphone must be disassembled from the sealing fixing device of the previous test workstation and then is re-installed on the sealing fixing device of the next test workstation, and then each test workstation must be provided with personnel to disassemble and assemble the earphone, so that the working efficiency is low, and the earphone acoustic test production line is difficult to adapt to the trend that the automatic requirements of the current mechanical manufacturing field, the electronic industry and the like are gradually improved;

2. each testing workstation needs to be provided with personnel to disassemble and assemble the earphones, so that the labor cost is high;

3. the earphone is pressed tightly through the cylinder to keep the earphone fixed, so that the indentation is easily generated on the surface of the earphone product to increase the rejection rate, and the production cost is indirectly improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a sealing and fixing device for an acoustic testing of an earphone, which can be matched with an automation device to realize automatic circulation of the earphone, improve the working efficiency and save the labor cost.

In order to solve the technical problems, the utility model adopts the following technical scheme: an earphone acoustic test seal fixture, comprising:

the fixing module comprises a fixing substrate and a simulation ear mounted on the fixing substrate, a first positioning part, a first sound channel and a communication connecting device for connecting the earphone and the testing computer in a communication mode are arranged on the fixing substrate, and a sound receiving end of a sound collecting channel of the simulation ear is hermetically arranged in the first sound channel;

the circulating module comprises a circulating substrate and an earphone positioning component arranged on the circulating substrate, wherein the circulating substrate is provided with a second positioning component and a second sound channel, the earphone positioning component comprises an imitated groove used for hermetically containing an earphone earplug part, and the imitated groove is hermetically communicated with the second sound channel;

the second positioning part is matched with the first positioning part to detachably arrange the movable module on the fixed module, and the first sound channel and the second sound channel are communicated in a sealing mode to form a sound transmission sound channel between the earphone and the simulated ear.

The profile groove is provided with a cover body, and the cover body is matched with the profile groove and is used for clamping and fixing the earphone earplug part.

The movable module is located on the top surface of the fixed substrate, the first sound channel penetrates through the thickness direction of the fixed substrate, the second sound channel penetrates through the thickness direction of the movable substrate, the top end of the first sound channel and the bottom end of the second sound channel are oppositely combined and are provided with a sealing structure, the earphone positioning component is located at the top end of the second sound channel, and the simulation ear is located at the bottom end of the first sound channel.

The sealing structure comprises a first sealing ring arranged at the top end of the first sound channel and a second sealing ring arranged at the bottom end of the second sound channel, and annular concave/convex parts matched with each other are arranged on the first sealing ring and the second sealing ring.

The first positioning part comprises a positioning convex part and a first magnetic element, the second positioning part comprises a positioning concave part and a second magnetic element, the positioning convex part is matched with the positioning concave part, and the first magnetic element and the second magnetic element are matched in a magnetic manner.

The positioning convex parts are arranged in a plurality of divergent modes, the first magnetic suction elements are arranged in a plurality of divergent modes, the positioning concave parts correspond to the positioning convex parts one to one, and the second magnetic suction elements correspond to the first magnetic suction elements one to one.

The number of the positioning convex parts is less than that of the first magnetic elements, and each positioning convex part is arranged between two adjacent first magnetic elements.

The communication connection device is arranged on the top surface of the fixed substrate, and the circulating substrate is provided with a avoiding hole for avoiding the communication connection device.

The communication connection device comprises two copper columns, an elastic sheet is welded at the top end of each copper column, and the two elastic sheets are respectively connected with two data interfaces of the earphone.

The earphone positioning part also comprises a tail pipe positioning part used for positioning the tail pipe of the earphone, and the tail pipe positioning part is provided with a clamping groove used for clamping the tail pipe of the earphone.

Compared with the prior art, the utility model has the following advantages and positive effects:

1. the sealing and fixing device for the acoustic testing of the earphones comprises a fixing module and a circulating module, wherein the circulating module is detachably arranged on the fixing module, the earphones are positioned on the circulating module through an earphone positioning component, and then the circulating module can be transported by adopting automatic equipment to circulate among different testing workstations without repeatedly disassembling and assembling earphone products, so that the testing automation degree and the testing work efficiency are greatly improved, and the influence of repeated disassembly and assembly on the surface quality of the earphones is avoided;

2. through the module that can circulate and the transfer of automation equipment cooperation between different test work stations, then only need be equipped with the staff at the head end workstation of test production line and terminal workstation and install and remove the earphone respectively, need not all to be equipped with the staff at every test work station, the human cost that has significantly reduced.

Drawings

Fig. 1 is a perspective view of a sealing and fixing device for an acoustic test of an earphone according to an embodiment of the present invention;

fig. 2 is a perspective view of a fixing module of the sealing and fixing device for testing the acoustics of the earphone according to the embodiment of the utility model;

fig. 3 is a perspective view of a rotatable module of the sealing and fixing device for testing the acoustics of the earphone according to the embodiment of the utility model.

Reference numerals: 1. an earphone; 100. a fixed module; 110. fixing the substrate; 120. simulating a real ear; 121. a sound collecting end of the sound collecting channel; 130. a first positioning member; 131. a positioning projection; 132. a first magnetically attractive element; 140. a first sound channel; 150. a first seal ring; 160. a communication connection device; 161. a copper pillar; 162. a spring plate; 200. a module capable of circulating; 210. a substrate capable of being circulated; 220. an earphone positioning part; 221. profiling grooves; 222. a tail pipe positioning part; 223. a card slot; 230. a second positioning member; 231. a positioning recess; 232. a second magnetically attractive element; 240. a second channel; 250. a second seal ring; 260. avoiding the hole.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.

Fig. 1 is a perspective view of the sealing and fixing device for testing the acoustics of the earphone of this embodiment, fig. 2 is a perspective view of the fixing module of this embodiment, fig. 3 is a perspective view of the module that can be moved around in this embodiment, and it should be noted that the dashed line components in fig. 1 to fig. 3 are components that cannot be seen in the corresponding drawings, such as structural components or internal components on the bottom surface.

Fig. 3 is a perspective view of a rotatable module of the sealing and fixing device for testing the acoustics of the earphone according to the embodiment of the utility model. Referring to fig. 1 to 3, the sealing and fixing device for acoustic testing of an earphone 1 of the present embodiment is used for sealing and fixing the earphone 1 during acoustic testing of the earphone 1, and includes a fixed module 100 and a movable module 200, which includes a fixed substrate 110 and a dummy ear 120 mounted on the fixed substrate 110, wherein the fixed substrate 110 is provided with a first positioning part 130, a first sound channel 140 and a communication connection device 160 for connecting the earphone and a testing computer in communication, and a sound receiving end 121 of a sound collecting channel of the dummy ear 120 is hermetically disposed in the first sound channel 140; the circulating module 200 comprises a circulating substrate 210 and an earphone positioning component 220 mounted on the circulating substrate 210, wherein the circulating substrate 210 is provided with a second positioning component 230 and a second channel 240, the earphone positioning component 220 comprises a contour groove 221 for hermetically accommodating an earphone earplug part, and the contour groove 221 is hermetically communicated with the second channel 240; the first positioning member 130 and the second positioning member 230 cooperate to detachably mount the movable module 200 on the fixed module 100, and the first sound channel 140 and the second sound channel 240 are in sealed communication to form a sound transmission channel between the earphone and the artificial ear.

The sealing and fixing device for the acoustic testing of the earphones comprises two parts, namely a fixed module 100 and a movable module 200, wherein the movable module 200 is detachably arranged on the fixed module 100, when the acoustic testing is needed, the earphones 1 are positioned on the movable module 200 through an earphone positioning component 220, and the movable module 200 can be detached, so that automatic equipment such as a mechanical arm can be adopted to carry the movable module 200, the earphones 1 are driven to move among different testing workstations, the earphone products do not need to be repeatedly disassembled and assembled, the testing automation degree and the testing work efficiency are greatly improved, and scratches or indentations which are possibly generated on the earphones due to repeated disassembly and assembly are avoided; meanwhile, the earphones can be mounted and dismounted only by the workers at the head end workstation and the tail end workstation of the test production line, and labor cost is greatly reduced.

Specifically, the artificial ear 120 is a device for measuring and calibrating the acoustic characteristics of the earphone and the speaker, and the structure and the measurement principle thereof are the prior art, and the structure thereof is not described in detail in this embodiment. The profiling shape of the profiling groove 221 is matched with the earphone earplug part, the profiling shape is specifically formed on a silica gel block, the silica gel block has elasticity, so that the earphone earplug part can be clamped into the profiling groove 221 in a sealing manner, namely, the earplug part and the profiling groove 221 are ensured to be matched in a sealing manner, and a rigid shell, such as a metal shell or a plastic shell, can be arranged on the periphery of the silica gel block to improve the structural strength of the earphone earplug part; the fixed substrate 110 and the rotatable substrate 210 are rectangular plates. After the earphone 1 is manually positioned on the earphone positioning component 220 of the movable module 200, the automatic equipment carries the movable module 200 and places the movable module on the fixed module 100, when the movable module is placed, it is ensured that the first positioning component 130 is matched with the second positioning component 230, the first positioning component 130 is matched with the second positioning component 230 in place, the first sound channel 140 is hermetically communicated with the second sound channel 240, then the earphone 1 is controlled by the testing computer to open sound, sound is transmitted into a sound transmission sound channel formed by the sealed communication of the first sound channel 140 and the second sound channel 240 through a loudspeaker in the earplug part, and then is transmitted into a sound collection channel of the simulated ear 120, sound recording is performed on the earphone 1, the test equipment is connected outside the simulated ear 120, the recorded sound is tested, and the test process and the principle are the same as those of the prior art, and no repeated description is given. After the test items of the test workstation are completed, the automation equipment moves away from the fixed module 100 and then transfers the test items to the next test workstation.

In order to further ensure the positioning reliability of the earphone 1 on the earphone positioning component 220 and prevent the earphone 1 from moving or falling off during the testing process or the carrying process of the automation equipment, in this embodiment, the contour groove is configured with a cover body (not shown), the cover body is matched with the contour groove 221 to clamp and fix the earphone ear plug portion, and the cover body can be in flip-type buckling or vertical buckling with the rigid shell of the silica gel block.

Also to ensure the positioning reliability of the earphone 1 on the earphone positioning part 220, as shown in fig. 1 and fig. 3, the earphone positioning part 220 in this embodiment further includes a tail pipe positioning part 222 for positioning a tail pipe of the earphone, and the tail pipe positioning part 222 has a card slot 223 for clamping the tail pipe of the earphone. In this embodiment, the tail pipe positioning portion 222 is formed by two opposite plastic cylinders, the opposite side surfaces of the two cylinders are provided with grooves, the two grooves are opposite, and the space between the two grooves forms the slot 223. The earphone tail tube is clamped in the clamping groove 223 through the elastic deformation of the plastic columnar body. The earplug part of the earphone 1 is positioned by the contour groove 221, and the tail tube of the earphone is positioned by the clamping groove 223, so that the positioning reliability and firmness of the earphone 1 are greatly improved.

In order to reduce the floor area of the acoustic testing sealing fixture for the earphone of this embodiment and facilitate the placement of the movable tooling 200, as shown in fig. 1 to fig. 3, the movable module 200 is located on the top surface of the fixed substrate 100 in this embodiment, i.e. the movable module 200 and the fixed module 100 are in a vertical structure relationship. Accordingly, the first acoustic channel 140 penetrates through the thickness direction of the fixed substrate 100, the second acoustic channel 240 penetrates through the thickness direction of the rotatable substrate 210 to facilitate processing, a sealing structure is disposed at a position where the top end of the first acoustic channel 140 is abutted to the bottom end of the second acoustic channel 240, so as to ensure sealing of a communication position between the first acoustic channel 140 and the second acoustic channel 240, the earphone positioning component 220 is located at the top end of the second acoustic channel 240, the artificial ear 120 is located at the bottom end of the first acoustic channel 140, that is, the earphone 1 is located at the top end of the sound transmission acoustic channel between the earphone 1 and the artificial ear 120, and the artificial ear 120 is located at the bottom end of the sound transmission acoustic channel.

Further, as shown in fig. 2 and 3, the sealing structure includes a first sealing ring 150 disposed at the top end of the first sound channel 140 and a second sealing ring 250 disposed at the bottom end of the second sound channel 240, and the first sealing ring 150 and the second sealing ring 250 are provided with annular concave/convex portions which are engaged with each other. Specifically, the top surface of the first seal ring 150 has an annular convex portion, the second seal ring 250 has an annular concave portion, and when the first seal ring 150 and the second duct 240 are aligned, the annular convex portion is embedded into the annular concave portion, so that the sealing performance of the sealing structure is enhanced.

The specific matching structure of the first positioning member 130 and the second positioning member 230 is for facilitating the automation equipment to automatically remove and place the rotatable module 200 on the fixed module 100, such as the matching of the positioning columns and the positioning holes. To enhance the stability of the rotatable module 200, in this embodiment, preferably, the first positioning component 130 includes a positioning protrusion 131 and a first magnetic element 132, the second positioning component 230 includes a positioning recess 231 (specifically, a positioning hole penetrating the thickness direction of the rotatable substrate 210) and a second magnetic element 232, the positioning protrusion 131 is sleeved with the positioning recess 231, the first magnetic element 132 and the second magnetic element 232 are magnetically engaged, the first magnetic element 132 is disposed on the top surface of the fixed substrate 110, and the second magnetic element 232 is disposed on the bottom surface of the rotatable substrate 210. The positioning protrusion 131 and the positioning recess 231 are engaged to each other to perform a positioning function, and the first magnetic attraction element 132 and the second magnetic attraction element 232 are magnetically engaged to each other to fix the movable module 200 after being placed on the fixed module 100, so as to prevent the movable module from shaking to affect the sealing performance of the sound transmission channel.

Furthermore, the positioning convex portions 131 are distributed in a plurality of different ways, the first magnetic elements 132 are distributed in a plurality of different ways, the positioning concave portions 231 correspond to the positioning convex portions 131 one by one, and the second magnetic elements 232 correspond to the first magnetic elements 132 one by one, so as to improve the reliability of the matching positioning of the first positioning member 130 and the second positioning member 230.

As shown in fig. 2, the number of the positioning protrusions 131 is less than that of the first magnetic elements 132, and each positioning protrusion 131 is disposed between two adjacent first magnetic elements 132. For taking into account cost and location reliability, location convex part 131 quantity is two in this embodiment, the quantity of first magnetism inhale the component 132 is 4, 4 first magnetism inhale the component 132 and be the rectangle four corners and lay, two location convex parts 131 are located respectively between two adjacent first magnetism inhale the component 132, and relative setting, correspondingly, location concave part 231 and second magnetism inhale the component 232 and correspond the setting, make like this that first locating part 130 and second locating part 230 cooperate the back to can circulate frock 200 each balanced location, be favorable to improving the location reliability to can circulate frock 200.

For the communication connection device 160, it is set up on the top surface of the fixed substrate 110, the substrate 210 that can circulate is equipped with the avoidance hole 260 for avoiding the communication connection device 160, thereby make the communication connection device 160 not additionally occupy the space, be favorable to reducing the floor area of the fixed substrate 110, be favorable to the miniaturized design of whole device.

Further specifically, in the present embodiment, the communication connection device 160 includes two copper cylinders 161, a spring piece 162 is welded at the top end of each copper cylinder 161, and the two spring pieces 162 are respectively connected to the two data interfaces of the headset 1. Specifically, the position of the elastic sheet 162 corresponds to the position of the data interface of the headset 1, the data interface of the headset 1 is usually disposed on the tail tube of the headset and is disposed opposite to the tail tube in the radial direction, and the two elastic sheets 162 are disposed opposite to each other to sandwich the tail tube of the headset and contact the data interface on the tail tube of the headset. Through shell fragment 162 and data interface contact switch on, the shell fragment 162 has elasticity on the one hand, can improve with data interface's contact reliability, and make things convenient for getting of earphone 1 to put, and on the other hand passes through the elastic deformation of shell fragment 162, and it can also suitably enlarge the size range of the earphone 1 that is suitable for.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. An earphone acoustic testing sealing fixture, comprising:

the fixing module comprises a fixing substrate and a simulation ear mounted on the fixing substrate, a first positioning part, a first sound channel and a communication connecting device for connecting the earphone and the testing computer in a communication mode are arranged on the fixing substrate, and a sound receiving end of a sound collecting channel of the simulation ear is hermetically arranged in the first sound channel;

the circulating module comprises a circulating substrate and an earphone positioning component arranged on the circulating substrate, wherein the circulating substrate is provided with a second positioning component and a second sound channel, the earphone positioning component comprises an imitated groove used for hermetically containing an earphone earplug part, and the imitated groove is hermetically communicated with the second sound channel;

the second positioning part is matched with the first positioning part to detachably arrange the movable module on the fixed module, and the first sound channel and the second sound channel are communicated in a sealing mode to form a sound transmission sound channel between the earphone and the simulated ear.

2. The earpiece acoustic test seal fixture of claim 1,

the profile groove is provided with a cover body, and the cover body is matched with the profile groove and is used for clamping and fixing the earphone earplug part.

3. The earpiece acoustic test seal fixture of claim 1,

the movable module is located on the top surface of the fixed substrate, the first sound channel penetrates through the thickness direction of the fixed substrate, the second sound channel penetrates through the thickness direction of the movable substrate, the top end of the first sound channel and the bottom end of the second sound channel are oppositely combined and are provided with a sealing structure, the earphone positioning component is located at the top end of the second sound channel, and the simulation ear is located at the bottom end of the first sound channel.

4. The earpiece acoustic test seal fixture of claim 3,

the sealing structure comprises a first sealing ring arranged at the top end of the first sound channel and a second sealing ring arranged at the bottom end of the second sound channel, and annular concave/convex parts matched with each other are arranged on the first sealing ring and the second sealing ring.

5. The earpiece acoustic test seal fixture of claim 1,

the first positioning part comprises a positioning convex part and a first magnetic element, the second positioning part comprises a positioning concave part and a second magnetic element, the positioning convex part is matched with the positioning concave part, and the first magnetic element and the second magnetic element are matched in a magnetic manner.

6. The earpiece acoustic test seal fixture of claim 5,

the positioning convex parts are arranged in a plurality of divergent modes, the first magnetic suction elements are arranged in a plurality of divergent modes, the positioning concave parts correspond to the positioning convex parts one to one, and the second magnetic suction elements correspond to the first magnetic suction elements one to one.

7. The earpiece acoustic test seal fixture of claim 6,

the number of the positioning convex parts is less than that of the first magnetic elements, and each positioning convex part is arranged between two adjacent first magnetic elements.

8. The earpiece acoustic test seal fixture of claim 3,

the communication connection device is arranged on the top surface of the fixed substrate, and the circulating substrate is provided with a avoiding hole for avoiding the communication connection device.

9. The earpiece acoustic test seal fixture of claim 8,

the communication connection device comprises two copper columns, an elastic sheet is welded at the top end of each copper column, and the two elastic sheets are respectively connected with two data interfaces of the earphone.

10. The earpiece acoustic test seal fixture of claim 1,

the earphone positioning part also comprises a tail pipe positioning part used for positioning the tail pipe of the earphone, and the tail pipe positioning part is provided with a clamping groove used for clamping the tail pipe of the earphone.

Images