CN212115681U

CN212115681U - Free field test tool and system

Info

Publication number: CN212115681U
Application number: CN202021205240.2U
Authority: CN
Inventors: 樊萌; 赵志勇
Original assignee: Rongcheng Gol Electronic Technology Co ltd
Current assignee: Rongcheng Gol Microelectronics Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-12-08
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a free field test fixture and system, this free field test fixture includes: a base; the first end of the first supporting rod is arranged above the base, the second end of the first supporting rod is provided with a first mounting seat, and the first mounting seat is provided with a mounting groove for mounting a tested product; the first end of the second supporting rod is movably arranged above the base, the second end of the second supporting rod is provided with a second mounting seat, and the second mounting seat is provided with a test probe matched with a tested product; the second supporting rod can slide relative to the base to be close to or far away from the first supporting rod so as to correspondingly enable the test probe to be abutted against or separated from a tested product. The utility model discloses free field test fixture can regard as the auxiliary fixtures that is surveyed the product and carry out the test, conveniently is surveyed the installation of product and test probe, does benefit to the test to can improve the test accuracy. Meanwhile, the free field test tool can also realize the batch test process of the tested products, thereby accelerating the test efficiency.

Description

Free field test tool and system

Technical Field

The utility model relates to a frock technical field, in particular to free field test fixture and system.

Background

With the rapid development of society, people have higher and higher requirements on the quality of electronic products. Common acoustic measurements for acoustic products, such as sound, are required to be performed in free fields, which are sound fields with negligible boundary effects in homogeneous isotropic media, and anechoic chambers are artificial free fields. The four walls, ceiling and floor of the anechoic chamber are all provided with sound-absorbing materials and wedges with strong sound-absorbing capability, so that the anechoic chamber can be used for accurately measuring sound sources and sound equipment, and is ideal acoustic measuring equipment. At present, there is the inconvenient problem of installation usually when being surveyed the product and carrying out acoustic measurement in the amortization room, is unfavorable for the test, influences the test accuracy even.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a free field test fixture and system, aim at solving and surveyed the product at present and have the inconvenient technical problem of installation usually when carrying out the acoustics measurement in the amortization room.

In order to achieve the above object, the utility model provides a free field test fixture includes:

a base;

a first supporting rod, wherein a first end of the first supporting rod is installed above the base, a second end of the first supporting rod is provided with a first installation seat, and the first installation seat is provided with an installation groove for installing a product to be tested;

a first end of the second supporting rod is movably arranged above the base, a second end of the second supporting rod is provided with a second mounting seat, and the second mounting seat is provided with a test probe matched with the tested product;

the second supporting rod can slide relative to the base to be close to or far away from the first supporting rod so as to correspondingly enable the test probe to be abutted against or separated from the tested product.

Preferably, the base is provided with a sliding groove, the first end of the second supporting rod is provided with a sliding seat, and the sliding seat is in sliding contact fit with the sliding groove.

Preferably, the free field test fixture further comprises a pull rod, the length direction of the pull rod is the same as the length direction of the sliding groove, the connecting end of the pull rod extends into the sliding groove and is connected with the sliding seat, and a handle is arranged at the free end of the pull rod and is arranged outside the sliding groove.

Preferably, the spout is close to the tip that the handle set up is installed the deflector, the deflector seted up with the guiding hole of spout intercommunication, the pull rod runs through the guiding hole, the handle is located the deflector is kept away from one side of spout.

Preferably, the sliding seat includes the sliding part and connects the installation department in sliding part top, the sliding part with spout sliding contact cooperation, the installation department is followed the opening of spout stretches out, just the first end of second bracing piece is installed on the installation department.

Preferably, the sliding groove is a dovetail groove, and the shape of the sliding part matches with the shape of the sliding groove.

Preferably, a first end of the first supporting rod is provided with a connecting seat, and the connecting seat extends into the sliding groove and is detachably connected with the base.

Preferably, the first mounting seat comprises a bottom plate and two side plates, the two side plates are respectively mounted on two sides of the bottom plate and connected through a connecting plate, the bottom plate, the connecting plate and the two side plates enclose the mounting groove, and the connecting plate is provided with an avoiding notch.

Preferably, the second mounting seat is provided with a mounting hole, the free field test fixture further comprises a mounting block detachably mounted in the mounting hole, and the test probe is inserted into the mounting block.

Preferably, the free field test fixture further comprises a support seat, the support seat is detachably connected below the base, a positioning groove is formed in the top of the support seat, and a positioning protrusion matched with the positioning groove is arranged at the position, corresponding to the positioning groove, of the bottom of the base.

The utility model provides a pair of free field test system, free field test system includes test analysis appearance and as above free field test fixture, the test probe with the test analysis appearance electricity is connected.

The utility model discloses free field test frock is arranged in the amortization indoor in the use. Before the test, will be surveyed the product and install in the mounting groove of first mount pad, with test probe installation on the second mount pad can, simple to operate easily operates. When needing the test, the second bracing piece slides to the direction that is close to first bracing piece to the test probe of drive installation on the second mount pad is close to by survey the product, until test probe and by survey the product butt, so that test probe switches on with the pin of being surveyed the product, and test probe conducts test signal to test analysis appearance, so that test analysis appearance analysis test signal, the completion is to being surveyed the measurement of product. After the test finishes, the second bracing piece slides to the direction of keeping away from first bracing piece to drive test probe and break away from the product under test, will be surveyed the product and take off in the mounting groove can. It should be noted that after the previous tested product is measured, the next tested product with the same model can be installed in the installation groove, and the measurement is completed according to the above process, so that the batch test process of the tested products is realized, and the test efficiency is accelerated.

The utility model discloses free field test fixture can regard as the auxiliary fixtures that is surveyed the product and carry out the test, conveniently is surveyed the installation of product and test probe, does benefit to the test to can improve the test accuracy. Meanwhile, the free field test tool can also realize the batch test process of the tested products, thereby accelerating the test efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an assembly schematic view of a free field test fixture according to an embodiment of the present invention;

fig. 2 is an exploded view of the free field test fixture at a viewing angle according to an embodiment of the present invention;

fig. 3 is an exploded view of the free field test fixture at another viewing angle according to an embodiment of the present invention;

fig. 4 is a partially enlarged view of the area a in fig. 3.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The present invention is described in the directions "up", "down", "left", "right", etc. with reference to the direction shown in fig. 1, and is only used to explain the relative positional relationship between the components in the posture shown in fig. 1, and if the specific posture is changed, the directional indication is also changed accordingly.

The utility model provides a free field test fixture.

In the embodiment of the present invention, as shown in fig. 1 to 4, the free field test fixture 100 of the embodiment includes a base 30, a first support rod 10 and a second support rod 20, wherein a first end of the first support rod 10 is installed above the base 30, a second end of the first support rod 10 is provided with a first mounting seat 11, and the first mounting seat 11 is provided with a mounting groove 111 for mounting a tested product 200; a first end of the second support rod 20 is movably mounted above the base 30, a second end of the second support rod 20 is provided with a second mounting seat 21, and the second mounting seat 21 is provided with a test probe 300 matched with the tested product 200; the second supporting bar 20 can slide relative to the base 30 to move closer to or away from the first supporting bar 10, so as to correspondingly make the test probe 300 abut against or separate from the product 200 to be tested.

Specifically, as shown in fig. 1 to 4, the first end of the first support bar 10 is a lower end, and the second end is an upper end; the first end of the second support bar 20 is a lower end and the second end is an upper end. The lower end of the first supporting rod 10 and the lower end of the second supporting rod 20 are both installed above the base 30, the upper end of the first supporting rod 10 is provided with a first installation seat 11, and the first installation seat 11 is provided with an installation groove 111. The tested product 200 of the present embodiment is illustrated by taking a microphone as an example. At the time of testing, the microphone may be mounted in the mounting groove 111 of the first mounting seat 11. The second mounting seat 21 is disposed at the upper end of the second support rod 20, the second mounting seat 21 is mounted with a test probe 300, the test probe 300 is matched with a microphone, it can be understood that different types of microphones correspond to different types of test probes 300, and the test probes 300 are electrically connected with a test analyzer (not shown) for testing the microphone. The lower end of the second support bar 20 is movably mounted on the base 30 and can slide left and right relative to the base 30.

The free field test fixture 100 of the present embodiment is placed in a sound deadening chamber during use. Before the test, first bracing piece 10 and second bracing piece 20 interval set up, and first bracing piece 10 is located the left side of second bracing piece 20, installs the microphone in the mounting groove 111 of first mount pad 11, with test probe 300 installation second mount pad 21 on can, simple to operate easily operates. When the test is needed, the second support rod 20 slides leftwards to be close to the first support rod 10, the second support rod 20 drives the test probe 300 installed on the second installation seat 21 to slide leftwards in the leftward sliding process, so that the test probe 300 is close to the microphone until the test probe 300 is abutted to the microphone, so that the test probe 300 is conducted with a pin of the microphone, the test probe 300 conducts the test signal to the test analyzer, so that the test analyzer analyzes the test signal, and the measurement of the microphone is completed. After the test is finished, the second supporting rod 20 slides rightwards to be away from the first supporting rod 10, the test probe 300 is driven to slide rightwards in the process that the second supporting rod 20 slides rightwards, and then the test probe 300 is separated from the microphone, and the microphone is taken down from the mounting groove 111. It should be noted that after the previous microphone is measured, the next microphone with the same model can be installed in the installation groove 111, and the measurement is completed according to the above process, so that the batch test process of the microphones is realized, and the test efficiency is accelerated.

The free field test tool 100 of the embodiment can be used as an auxiliary tool for testing the tested product 200, so that the tested product 200 and the test probe 300 can be conveniently installed, the test is facilitated, and the test accuracy can be improved. Meanwhile, the free field test tool 100 can also realize the batch test process of the tested products 200, and the test efficiency is accelerated.

In this embodiment, the base 30 is provided with a sliding slot 31, the first end of the second support rod 20 is provided with a sliding seat 22, and the sliding seat 22 is in sliding contact with and matches with the sliding slot 31. The sliding seat 22 can slide left and right in the sliding groove 31, and further the second supporting rod 20 is driven to slide left and right relative to the sliding seat 22, and the structural design is reasonable. Further, the free field test tool 100 further comprises a pull rod 40, the length direction of the pull rod 40 is the same as the length direction of the sliding chute 31, the connecting end of the pull rod 40 extends into the sliding chute 31 to be connected with the sliding seat 22, the free end of the pull rod 40 is provided with a handle 41, and the handle 41 is arranged outside the sliding chute 31.

Specifically, the chute 31 extends in the left-right direction, that is, the longitudinal direction of the chute 31 is the left-right direction, and the pull rod 40 also extends in the left-right direction, so that the longitudinal direction of the pull rod 40 coincides with the longitudinal direction of the chute 31, which is also the left-right direction. The connecting end of the pull rod 40 is the left end of the pull rod 40, the free end of the pull rod 40 is the right end of the pull rod 40, the left end of the pull rod 40 extends into the sliding groove 31 to be connected with the sliding seat 22, and the handle 41 is arranged outside the sliding groove 31 and at the right end of the pull rod 40. The handle 41 pulls the pull rod 40 leftwards or rightwards, so that the pull rod 40 pulls the sliding seat 22 to slide leftwards or rightwards along the sliding chute 31, and the second support bar 20 is driven to approach or depart from the first support bar 10. The slide seat 22 is pulled to slide left and right along the sliding groove 31 by arranging the pull rod 40, so that the second support rod 20 is driven to slide left and right relative to the base 30, and the operation is simple, convenient and easy.

In this embodiment, the end portion of the chute 31 near the handle 41 is provided with the guide plate 32, the guide plate 32 is provided with a guide hole 321 communicated with the chute 31, the pull rod 40 penetrates through the guide hole 321, and the handle 41 is located on one side of the guide plate 32 departing from the chute 31. As shown in fig. 1 to 3, in detail, the guide plate 32 is installed at a right end portion of the chute 31, the pull rod 40 penetrates through the guide hole 321, and the handle 41 is located at a right side of the guide plate 32. Through the arrangement of the guide plate 32 and the arrangement of the guide holes 321 on the guide plate 32, the left-right sliding of the pull rod 40 can be guided, and the sliding stability of the sliding seat 22 and the second support rod 20 can be improved.

In this embodiment, the connecting end of the pull rod 40 is detachably connected to the sliding seat 22, and the handle 41 is integrally formed at the free end of the pull rod 40. Specifically, the sliding seat 22 is provided with an internal thread, the left end of the pull rod 40 is provided with an external thread, and the pull rod 40 can be in threaded connection with the sliding seat 22, so that the assembly and disassembly are convenient. The handle 41 is integrally formed on the pull rod 40, so that the manufacture is convenient, and the assembly step is omitted.

In this embodiment, the sliding seat 22 includes a sliding portion 221 and a mounting portion 222 connected above the sliding portion 221, the sliding portion 221 is in sliding contact with the sliding groove 31, the mounting portion 222 protrudes from an opening of the sliding groove 31, and the first end of the second support rod 20 is mounted on the mounting portion 222. As shown in fig. 1 to 3, the opening of the chute 31 is upward, and the mounting portion 222 protrudes from the opening of the chute 31 so as to be connected with the lower end of the second support bar 20. In addition, the lower end of the second support rod 20 is also provided with an installation plate 23, and the installation plate 23 is detachably connected with the installation part 222, so that the assembly and the disassembly are convenient. Further, the sliding groove 31 is a dovetail groove, and the shape of the sliding portion 221 is matched with the shape of the sliding groove 31, so that the sliding stability of the sliding seat 22 is improved, and the sliding stability of the second support rod 20 is further improved.

In this embodiment, the first end of the first support rod 10 is provided with a connecting seat 12, and the connecting seat 12 extends into the sliding slot 31 and is detachably connected with the base 30. Connecting seat 12 can be bolted connection with base 30, and when needing to be dismantled, after loosening the bolt of connecting seat 12 and base 30, connecting seat 12 can follow the left end roll-off of spout 31, understandably, during the assembly, can slide connecting seat 12 in spout 31 from the left end of spout 31 to adopt the bolt to fasten connecting seat 12 and base 30 and can realize the installation of first bracing piece 10.

The first mounting seat 11 of this embodiment includes a bottom plate 112 and two side plates 113, the two side plates 113 are respectively mounted on two sides of the bottom plate 112, the two side plates 113 are connected by a connecting plate 114, the bottom plate 112, the connecting plate 114 and the two side plates 113 enclose a mounting groove 111, and the connecting plate 114 is provided with an avoiding notch 115. The microphone can be installed in the installation groove 111 by using a tool such as tweezers, and the bottom plate 112, the connecting plate 114 and the two side plates 113 limit and fix the microphone. The avoidance notch 115 is arranged on the wheat

The microphone is inserted into the mounting groove 111 while avoiding the tweezers, so that the microphone can be smoothly mounted.

In this embodiment, the second mounting base 21 is provided with a mounting hole 211, the free field test fixture 100 further includes a mounting block 24 detachably mounted in the mounting hole 211, and the test probe 300 is inserted into the mounting block 24. The mounting block 24 as the carrier of the test probe 300 is detachably mounted in the mounting hole 211, so that the mounting block 24 and the second mounting seat 21 can be detachably mounted, and the mounting and dismounting are convenient. In order to improve the identification, identification symbols may be provided on both the first support bar 10 and the second support bar 20, and the identification symbols may be the models of the corresponding microphones. In addition, the upper end of the first supporting rod 10 is designed to be narrowed, so that when the second supporting rod 20 slides to the left side to the first supporting rod 10, a gap can be reserved between the upper end of the first supporting rod 10 and the upper end of the second supporting rod 20, and the condition that the microphone is damaged due to the fact that the test probe 300 collides with the microphone in the process that the second supporting rod 20 slides to the left side is avoided.

As shown in fig. 1 to fig. 3, the free field test fixture 100 of the present embodiment further includes a support seat 50, the support seat 50 is detachably connected below the base 30, a positioning groove 51 is formed at the top of the support seat 50, and a positioning protrusion 33 matched with the positioning groove 51 is disposed at a position of the bottom of the base 30 corresponding to the positioning groove 51. Specifically, when the free field test fixture 100 is used, the upper end of the support seat 50 passes through the bolt and the base 30, the lower end of the support seat 50 can be connected with external equipment, and the support seat 50 can be used as a middle adapter, so that the free field test fixture 100 is installed. In addition, the cooperation of the positioning groove 51 of the supporting seat 50 and the positioning bulge 33 of the base 30 is beneficial to the accurate assembly of the supporting seat 50 and the base 30, and on the other hand, when the bolt connecting the supporting seat 50 and the base 30 is loosened, the cooperation of the positioning groove 51 and the positioning bulge 33 is provided, so that the base 30 can be prevented from shaking, the assembly stability of the free field test tool 100 is improved, and the test accuracy of the microphone is improved.

The utility model discloses still provide a free field test system, this free field test system includes test analysis appearance and foretell free field test fixture 100, and test probe 300 is connected with the test analysis appearance electricity. When the test probe 300 is conducted with the pin of the microphone, the test probe 300 transmits the test signal to the test analyzer, and the test analyzer analyzes the test signal to complete the measurement of the microphone. Since the free field test system adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The utility model provides a free field test fixture which characterized in that, free field test fixture includes:

a base;

2. The free field test fixture of claim 1, wherein the base defines a slot, and the first end of the second support rod defines a sliding seat, the sliding seat being in sliding contact with the slot.

3. The free field test fixture of claim 2, further comprising a pull rod, wherein the length direction of the pull rod is the same as the length direction of the sliding groove, a connecting end of the pull rod extends into the sliding groove and is connected with the sliding seat, and a handle is arranged at a free end of the pull rod and is arranged outside the sliding groove.

4. The free field test tool according to claim 3, wherein a guide plate is mounted at an end portion of the chute, which is close to the handle, the guide plate is provided with a guide hole communicated with the chute, the pull rod penetrates through the guide hole, and the handle is located at a side of the guide plate, which is away from the chute.

5. The free field test tool of claim 2, wherein the sliding seat includes a sliding portion and an installation portion connected above the sliding portion, the sliding portion is in sliding contact fit with the sliding groove, the installation portion extends out from an opening of the sliding groove, and a first end of the second support rod is installed on the installation portion.

6. The free field test fixture of claim 5 wherein the slide slot is dovetail shaped, the shape of the slide portion matching the shape of the slide slot.

7. The free field test tool according to any one of claims 1 to 6, wherein the first mounting seat comprises a bottom plate and two side plates, the two side plates are respectively mounted on two sides of the bottom plate and connected through a connecting plate, the bottom plate, the connecting plate and the two side plates enclose the mounting groove, and the connecting plate is provided with an avoiding gap.

8. The free field test fixture of any one of claims 1-6, wherein the second mounting base is provided with a mounting hole, the free field test fixture further comprising a mounting block detachably mounted in the mounting hole, the test probe being inserted on the mounting block.

9. The free field test fixture according to any one of claims 1 to 6, further comprising a support base, wherein the support base is detachably connected below the base, a positioning groove is formed in the top of the support base, and a positioning protrusion matched with the positioning groove is arranged at the bottom of the base corresponding to the positioning groove.

10. A free-field test system comprising a test analyzer and a free-field test fixture according to any one of claims 1-9, the test probe being electrically connected to the test analyzer.