CN207505146U - A kind of device of test loudspeaker driving force - Google Patents
A kind of device of test loudspeaker driving force Download PDFInfo
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- CN207505146U CN207505146U CN201721666808.9U CN201721666808U CN207505146U CN 207505146 U CN207505146 U CN 207505146U CN 201721666808 U CN201721666808 U CN 201721666808U CN 207505146 U CN207505146 U CN 207505146U
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Abstract
The utility model is a kind of device of test loudspeaker driving force, include DC power supply machine, main frame body, push-pull effort machine, voice coil stationary fixture, voice coil to be measured, magnetic circuit to be measured, sliding block, magnetic circuit fixed underpan, wherein push-pull effort machine is installed in the top of main frame body, voice coil stationary fixture is installed on push-pull effort machine, voice coil to be measured is installed in the bottom of voice coil stationary fixture, magnetic circuit fixed underpan is installed in the bottom of main frame body, magnetic circuit fixed underpan is equipped with sliding slot, sliding block is installed on the sliding slot set by magnetic circuit fixed underpan, magnetic circuit to be measured is fixed on by sliding block on the sliding slot that magnetic circuit fixed underpan is equipped with, power machine is installed in the bottom of main frame body.The utility model only needs magnetic circuit and voice coil just can test out to fast accurate the maximum value of speaker drive power, powerful data are provided for loudspeaker design exploitation to support, so as to greatly shorten the scientific research and development period and reduce R＆D costs, and the utility model is sturdy and durable, it is versatile, using being simple and efficient.
Description
Technical field
The utility model is related to a kind of devices of test loudspeaker driving force, belong to the dress of quick test loudspeaker driving force
The innovative technology put.
Background technology
Dynamic factor or driving force（Abbreviation BL）Refer to magnetic induction intensity of the loud speaker in magnetic circuit gap and effective voice coil
The product of line length is one very important parameter of loud speaker, has very important design reference to act on loud speaker exploitation.
And traditional test mode is ability after needing loud speaker major part being assembled into finished product after tested including magnetic circuit hardware and software
Practical BL values are obtained, this process needs the longer development cycle and expends more cost of parts.
Invention content
The purpose of this utility model is that consider the above problem and design a kind of device of test loudspeaker driving force, this reality
It is not needed to novel by being assembled into loud speaker finished product, it is only necessary to which magnetic circuit hardware and voice coil just can be tested out to fast accurate and be raised
The maximum value of sound device driving force provides powerful data for loudspeaker design exploitation and supports, so as to greatly shorten scientific research and development
Period and reduce R＆D costs, and the apparatus have it is sturdy and durable, it is versatile, the advantages of using being simple and efficient.
The technical solution of the utility model is：The device of the test loudspeaker driving force of the utility model, includes direct current
Power machine, main frame body, push-pull effort machine, voice coil stationary fixture, voice coil to be measured, magnetic circuit to be measured, sliding block, magnetic circuit fixed underpan,
Wherein push-pull effort machine is installed in the top of main frame body, and voice coil stationary fixture is installed on push-pull effort machine, and voice coil to be measured is installed in sound
The bottom of stationary fixture is enclosed, magnetic circuit fixed underpan is installed in the bottom of main frame body, and magnetic circuit fixed underpan is equipped with sliding slot, sliding die
Packaged to be located on the sliding slot set by magnetic circuit fixed underpan, magnetic circuit to be measured is fixed on magnetic circuit fixed underpan by sliding block and is equipped with
Sliding slot on, power machine is installed in the bottom of main frame body.
The utility model is not needed to by being assembled into loud speaker finished product, it is only necessary to which magnetic circuit and voice coil just being capable of fast accurates
The maximum value of speaker drive power is tested out, providing powerful data for loudspeaker design exploitation supports, so as to greatly shorten
Scientific research and development period and reduction R＆D costs, and the utility model is sturdy and durable, it is versatile, it is a kind of using being simple and efficient
The device of convenient and practical test loudspeaker driving force.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the enlarged drawing of sliding block in the utility model；
Fig. 3 is the enlarged drawing of set driving device on main frame body in the utility model.
Specific embodiment
The structure diagram of the utility model is as shown in Figure 1, the device of the test loudspeaker driving force of the utility model, packet
DC power supply machine 1, main frame body 2, push-pull effort machine 3, voice coil stationary fixture 4, voice coil to be measured 5, magnetic circuit to be measured 6, sliding block are included
7th, magnetic circuit fixed underpan 8, wherein push-pull effort machine 3 are installed in the top of main frame body 2, and voice coil stationary fixture 4 is installed in push-pull effort machine 3
On, voice coil 5 to be measured is installed in the bottom of voice coil stationary fixture 4, and magnetic circuit fixed underpan 8 is installed in the bottom of main frame body 2, and magnetic circuit is solid
Chassis 8 is determined equipped with sliding slot, and sliding block 7 is installed on the sliding slot set by magnetic circuit fixed underpan 8, and magnetic circuit 6 to be measured passes through slip
Module 7 is fixed on the sliding slot that magnetic circuit fixed underpan 8 is equipped with, and power machine 1 is installed in the bottom of main frame body 2.
In the present embodiment, above-mentioned push-pull effort machine 3 is installed in the front side of the console 21 set by 2 top of main frame body.
In the present embodiment, above-mentioned magnetic circuit fixed underpan 8 is installed on the platform 23 set by 2 bottom of main frame body.
In the present embodiment, above-mentioned sliding block 7 is installed in the sliding slot set by magnetic circuit fixed underpan 8.
In the present embodiment, above-mentioned magnetic circuit 6 to be measured is installed in the middle part of magnetic circuit fixed underpan 8.
In the present embodiment, above-mentioned power machine 1 is installed in the side of platform 23 set by 2 bottom of main frame body.
In the present embodiment, above-mentioned push-pull effort machine 3 is digital display push-pull effort machine.Power machine 1 is DC power supply machine.
In the present embodiment, above-mentioned magnetic circuit fixed underpan 8 is equipped with three sliding slots, and every sliding slot is all fixed by sliding block 7
There is magnetic circuit 6 to be measured, above-mentioned magnetic circuit fixed underpan 8 uses robust aluminium, in use, only need to be by the spiral shell on sliding block 7
Silk is back-outed, and being then moved to suitable position along sliding slot as needed tightens, thus can quickly and easily will not
Same type and loud speaker of different shapes magnetic circuit 6 to be measured are easily fixed.
In the present embodiment, above-mentioned push-pull effort machine 3 is integrated with the installing of console 21 set by 2 top of main frame body, in addition, main
Frame body 2 is additionally provided with driving device, and driving device includes motor and its worm drive pair, worm drive pair include screw rod 22 and
The output shaft of nut, wherein motor is connect with screw rod 22, and the nut of worm drive pair is connect with console 21, presses console 21
Upper setting moves down button, starts motor work, and motor drives screw rod 22 to rotate, and nut is moved so as to drive console 21
It moves from top to down, so as to fulfill the moving up and down in magnetic circuit gap of voice coil 5.Or internal thread has directly been made on console 21,
Screw rod 22 forms worm drive pair with console 21, and motor drives screw rod 22 to rotate, and console 21 moves.By setting test speed
Degree and measuring distance（Such as 0.5mm/ times, that is, it is 0.5mm to press a button displacement distance）Etc. after parameters, click and move down button
Can from top to down one by one sweep test with the detailed distribution situation of BL in real time reconnaissance magnetic field, can also select it is long pin to
Lower movable button is quickly tested.
The test process of the utility model is as follows：
1）It will be fixed after 5 welding lead of voice coil to be measured with voice coil positioning fixture 4；
2）Push-pull effort machine 3 is vertically fixed on to the front position of console 21 set by main frame body 2 with screw；
3）Voice coil 5 to be measured and 4 component of voice coil positioning fixture are fixed on push-pull effort machine 3 with extension bar is lengthened；
4）Magnetic circuit 6 to be measured is placed on magnetic circuit fixed underpan 8, the position of voice coil 5 and magnetic circuit to be measured 6 to be measured is adjusted, makes
Voice coil 5 is fixed after the gap uniformity in magnetic circuit 6 to be measured with sliding block 7 again；
6）Power machine 1 is connect with voice coil leads, voltage and current needed for setting；
7）The parameters such as test speed, distance are set in push-pull effort machine 3；
8）Start to test and record related data, obtain maximum BL values caused by magnetic circuit 6 and voice coil to be measured 5 to be measured.
The utility model is detected using following principle：According to faraday's left hand rule principle energized coils in magnetic field
Driving force can be generated by the effect of magnetic field force, size and magnetic induction intensity, the effective voice coil line length of power, current strength is into just
Than there is F=BL*I（Wherein F is driving force, and BL is magnetic induction intensity of the voice coil in magnetic circuit gap, and I is electric current）, this practicality
It is novel to utilize the principle, the device of the quick test loudspeaker driving force of ingehious design.
Since energized coils can be acted on by field drives power in magnetic field, make voice coil quick by adjusting push-pull effort machine
Make the movement of the perpendicular magnetic line of force from top to down in magnetic circuit gap, the instant accurate recording of digital display push-pull effort being integrated with voice coil installing
The relevant test data of power is driven, using input current is preset as 1 peace times, according to F=BL*I, so as to quickly learn
Maximum BL values caused by magnetic circuit and voice coil to be measured.And it is verified by case, using the BL values that the utility model is tested with leading to
The BL value precisions for crossing the acquisition of test loudspeaker finished product are up to 98%, are researched and developed so as to greatly shorten the scientific research and development period and reduce
Cost.In addition, the utility model have it is sturdy and durable, it is versatile, the advantages of using being simple and efficient, all differences can be met
The demand of the quick test b L parameters of type loudspeakers.
The utility model it is versatile, since push-pull effort machine 3 used is thrust, the tension tester of small-sized simplicity
Device has the advantages that high-accuracy high-resolution.There are many kind different load instrument from minimum 2 newton to 500 newton for choosing
It selects, and it is simple and easy to do to replace instrument, it is only necessary to be locked after the screw of retainer instrument is back-outed new instrument to be replaced.Separately
Outside, it in addition, 3 test function of push-pull effort machine of the utility model institute adapted is complete, is conveniently operated, with serial ports（RS-232C）It is defeated
Go out, PC can be connected and realize data storage, editor and printing function, research and development engineer is facilitated to analyze data.
The power machine 1 of the utility model configuration is DC power supply machine, which is also the direct current that can be programmed
Source machine, can easily set voltage and current according to testing requirement, therefore no matter high pitch, bass, subwoofer etc. are different types of
Loud speaker can meet testing requirement.
Claims (9)
1. a kind of device of test loudspeaker driving force, it is characterised in that include DC power supply machine, main frame body, push-pull effort machine,
Voice coil stationary fixture, voice coil to be measured, magnetic circuit to be measured, sliding block, magnetic circuit fixed underpan, wherein push-pull effort machine are installed in main frame body
Top, voice coil stationary fixture is installed on push-pull effort machine, and voice coil to be measured is installed in the bottom of voice coil stationary fixture, and magnetic circuit is fixed
Chassis is installed in the bottom of main frame body, and magnetic circuit fixed underpan is equipped with sliding slot, and sliding block is installed in set by magnetic circuit fixed underpan
Sliding slot on, magnetic circuit to be measured is fixed on by sliding block on the sliding slot that magnetic circuit fixed underpan is equipped with, and power machine is installed in master
The bottom of frame body.
2. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned push-pull effort machine is installed in
The front side of console set by main frame body top.
3. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned magnetic circuit fixed underpan dress
It is located on the platform set by main frame body bottom.
4. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned sliding block is installed in
In sliding slot set by magnetic circuit fixed underpan.
5. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned magnetic circuit to be measured is installed in
The middle part of magnetic circuit fixed underpan.
6. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned power machine is installed in master
The side of platform set by frame body bottom.
7. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned push-pull effort machine is digital display
Push-pull effort machine.
8. the device of test loudspeaker driving force according to claim 1, it is characterised in that above-mentioned power machine is direct current
Source machine.
9. according to the device of claim 1 to 8 any one of them test loudspeaker driving force, it is characterised in that above-mentioned magnetic circuit is consolidated
Chassis is determined equipped with three sliding slots, and every sliding slot is all fixed with magnetic circuit to be measured by sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721666808.9U CN207505146U (en) | 2017-12-05 | 2017-12-05 | A kind of device of test loudspeaker driving force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721666808.9U CN207505146U (en) | 2017-12-05 | 2017-12-05 | A kind of device of test loudspeaker driving force |
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| Publication Number | Publication Date |
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| CN207505146U true CN207505146U (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721666808.9U Active CN207505146U (en) | 2017-12-05 | 2017-12-05 | A kind of device of test loudspeaker driving force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068254A (en) * | 2018-07-06 | 2018-12-21 | 郑州大学 | A kind of voice coil polarity test device based on ergonomics in safety |
-
2017
- 2017-12-05 CN CN201721666808.9U patent/CN207505146U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068254A (en) * | 2018-07-06 | 2018-12-21 | 郑州大学 | A kind of voice coil polarity test device based on ergonomics in safety |
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