CN216600083U

CN216600083U - Clamping assembly for testing rigidity of sound film

Info

Publication number: CN216600083U
Application number: CN202122821533.4U
Authority: CN
Inventors: 陈进; 王世伟; 汪锋
Original assignee: Guoguang Electric Co Ltd
Current assignee: Guoguang Electric Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-24
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a clamping assembly for testing the rigidity of a sound film, which comprises a first clamping piece and a second clamping piece, wherein the first clamping piece is arranged on the first clamping piece; the first clamping piece is provided with a first through hole; a first flange is arranged on the first clamping piece body around the first through hole; a second through hole is formed in the second clamping piece; a step structure is arranged on the second clamping piece body around the second through hole; the ladder structure is used for placing the sound film group to be tested; the first flange is inserted in the stepped structure, and the first flange of the first clamping piece is inserted in the stepped structure of the second clamping piece, so that the tested voice diaphragm set can be fixed in the accommodating cavity formed by the first flange and the stepped structure, the voice diaphragm set is prevented from displacing in the horizontal and vertical directions during testing, and the precision of rigidity testing is guaranteed.

Description

Clamping assembly for testing rigidity of sound film

Technical Field

The utility model relates to the technical field of clamping devices, in particular to a clamping assembly for testing the rigidity of a sound film.

Background

The sound film is one of the main parts in the loudspeaker, and the rigidity performance of the sound film plays a crucial role in the quality of the loudspeaker, so before the sound film is installed on the loudspeaker, the sound film must be subjected to a rigidity test to ensure the quality of the loudspeaker.

In the prior art, there is a rigidity testing apparatus, in which a sound membrane is placed in a corresponding groove of an apparatus base, and then a rigidity test is performed, and in the whole testing process, a device for clamping the sound membrane is not provided, and the sound membrane tends to move due to the change of amplitude, thereby greatly affecting the testing result.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a clamping assembly for a sound membrane rigidity test, which can solve the problems of stability and centering of a sound membrane group during the rigidity test.

The purpose of the utility model is realized by adopting the following technical scheme:

a clamping assembly for testing the rigidity of a sound film comprises a first clamping piece and a second clamping piece; the first clamping piece is provided with a first through hole; a first flange is arranged on the first clamping piece body around the first through hole; a second through hole is formed in the second clamping piece; a step structure is arranged on the second clamping piece body around the second through hole; the ladder structure is used for placing the sound film group to be tested; the first flange is inserted into the stepped structure.

Furthermore, the clamping assembly also comprises a positioning piece, and the positioning piece comprises a positioning piece body and a first boss arranged on the positioning piece body; the first boss comprises a limiting shoulder and a positioning column; the limiting shoulder is embedded into the second through hole and used for limiting the movement of the positioning piece and the second clamping piece; the positioning column is arranged on the limiting shoulder and used for positioning the sound film group at the position of the center shaft of the clamping assembly.

Furthermore, a third through hole is formed in the middle shaft of the positioning piece.

Furthermore, the clamping assembly further comprises a first pressing piece, wherein a cavity is formed in the concave lower surface of the first pressing piece, and the cavity is used for accommodating the sound diaphragm of the sound diaphragm group.

Further, the clamping assembly further comprises a second pressing piece, a second boss is formed on the lower surface of the second pressing piece in a protruding mode, and the second boss is used for being inserted into the voice coil of the voice diaphragm set.

Further, the clamping assembly further comprises a third clamping piece, the third clamping piece is provided with a fourth through hole, a second flange is arranged on a third clamping piece body around the fourth through hole, and the second flange is used for being inserted into the first through hole.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the first flange of the first clamping piece is inserted into the stepped structure of the second clamping piece, so that the sound diaphragm group can be fixed in a cavity formed by the first flange and the stepped structure, the sound diaphragm group is prevented from displacing in the horizontal and vertical directions during testing, and the accuracy of rigidity testing is ensured;

(2) the sound membrane group is positioned at the middle shaft of the clamping assembly through the positioning piece, so that the force application point of the force application device is prevented from deviating from the middle shaft due to the fact that the sound membrane group is not centered during testing, and the precision of rigidity testing is improved;

(3) the first pressing piece and the second pressing piece can uniformly diffuse the external force to the sound film, and the accuracy of rigidity testing is further improved.

Drawings

FIG. 1 is an exploded view of a clamping assembly of the present invention;

FIG. 2 is an exploded view of another clamping assembly of the present invention;

FIG. 3 is a cross-sectional view of a clamping assembly of the present invention being rigid on the side;

FIG. 4 is a cross-sectional view of a clamping assembly of the present invention with side rigidity reversed;

FIG. 5 is a schematic view of a first press element of the present invention;

FIG. 6 is a cross-sectional view of a first press element of the present invention;

FIG. 7 is a schematic view of a first press element of the present invention in use;

FIG. 8 is a schematic view of a second press member of the present invention;

FIG. 9 is a cross-sectional view of a second press element of the present invention;

FIG. 10 is a schematic view of a second press element of the present invention in use;

FIG. 11 is a schematic view of a third clamp of the present invention;

fig. 12 is a third clamping usage diagram of the present invention.

Reference numbers in the drawings illustrate:

1. a first clamping member; 11. a first through hole; 12. a first flange; 2. a second clamping member; 21. a second through hole; 22. a stepped structure; 23. a lead slot; 3. a positioning member; 31. a first boss; 311. a limiting shoulder; 312. a positioning column; 32. a third through hole; 4. a first pressing member; 41. a cavity; 5. a second pressing member; 51. a second boss; 6. a third clamping member; 61. a fourth via hole; 62. a second flange; 71. a lead wire; 72. a voice coil; 73. a sound membrane; 74. folding the ring; 8. and a force application device.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the word "over" a first feature or feature in a second feature may include the word "over" and "obliquely over" the second feature or merely indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, in the description of the present invention, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 and 2, the present invention provides a clamping assembly for testing the rigidity of a sound diaphragm, specifically comprising a first clamping member 1 and a second clamping member 2, wherein the first clamping member 1 is provided with a first through hole 11, and a first flange 12 is provided on a first clamping member body around the first through hole 11. The second clamping member 2 is provided with a second through hole 21, a ladder structure 22 is arranged on the second clamping member body around the second through hole 21, and the ladder structure 22 is used for placing the voice diaphragm group to be tested. As shown in FIG. 3, the first flange 12 is inserted into the step structure 22, such that the diaphragm set is fixed in the cavity formed by the first flange 12 and the step structure 22.

Specifically, when the rigidity of the edge is being tested in the rigidity test, the voice diaphragm group is placed on the second clamping part 2, the outer edge of the voice diaphragm group folding ring 74 is supported by the horizontal plane of the stepped structure 22, and the first clamping part 1 is inserted into the second clamping part 2, so that the first flange 12 can be firmly pressed on the outer edge of the voice diaphragm group folding ring 74, and the horizontal displacement of the voice diaphragm group due to vibration is avoided. Meanwhile, due to the design that the width of the cross section of the first flange 12 is smaller than the width of the horizontal plane of the stepped structure 22, the first clamping piece 1 is prevented from pressing the arch part of the folding ring 74, and the sound film is prevented from being damaged. In addition, when the rigidity test of the reverse side is performed, the first clamping piece 1, the second clamping piece 2 and the sound diaphragm set need to be inverted, as shown in fig. 4, the first flange 12 and the stepped structure 22 clamp the outer edge of the folded ring 74 of the sound diaphragm set, so that the sound diaphragm set cannot be displaced in the vertical direction during the test, and the rigidity test precision is ensured. Optionally, the second clamping member 2 further defines a lead groove 23 for placing the sound diaphragm group lead 71.

In this embodiment, the clamping assembly further includes a positioning member 3, the positioning member 3 includes a positioning member body and a first boss 31 disposed on the positioning member body, the first boss 31 includes a limiting shoulder 311 and a positioning post 312, the size of the limiting shoulder 311 matches the second through hole 21, and is used for limiting the relative movement between the positioning member 3 and the second clamping member 2 when the first boss 31 is embedded into the second through hole 21; the positioning post 312 is disposed on the limiting shoulder 311, and the size of the positioning post 312 is matched with the voice coil 72 of the voice diaphragm set, so as to position the voice diaphragm set at the central axis of the clamping assembly. Further, third through-hole 32 has been seted up to the axis position of setting element 3, third through-hole 32 is used for the exhaust, because when placing second holder 2 and first holder 1 in setting element 3 top, the three is equivalent to the piston effect, if not set up third through-hole 32, then can cause the sound diaphragm group that holds the intracavity that is in first holder 1 and second holder 2 formation to take place the phenomenon of blowing, make the sound diaphragm group that is surveyed to be damaged, greatly reduced test accuracy, increase the test cost again simultaneously.

In the present embodiment, the clamping assembly further includes a first pressing member 4, as shown in fig. 5 and 6, a cavity 41 is concavely formed on the lower surface of the first pressing member 4, and the cavity 41 is used for accommodating the sound membrane 73 of the sound membrane group. Specifically, fig. 7 shows the position relationship of the first pressing member 4, the sound diaphragm set and the force applying device 8 during the rigidity test of the front side, and the first pressing member 4 is placed at the arch of the folding ring 74 of the sound diaphragm set and the recess of the sound diaphragm 73 for uniformly diffusing the external force applied by the force applying device 8 to the folding ring 74 of the sound diaphragm set so as to perform the rigidity test of the front side.

Preferably, the cavity 41 is trapezoidal in cross-section. It should be noted that the cavity 41 may be designed in various shapes, such as triangle, rectangle, etc.

In the present embodiment, the clamping assembly further includes a second pressing member 5, as shown in fig. 8 and 9, a lower surface of the second pressing member 5 is protruded to form a second boss 51. Specifically, fig. 10 shows the position relationship of the second pressing member 5, the voice diaphragm set and the force application device 8 during the rigidity test of the reverse side, the second pressing member 5 is placed on the voice coil 72 of the voice diaphragm set, and is used for uniformly diffusing the external force applied by the force application device 8 to the voice coil 72 of the voice diaphragm set, and further transmitting the external force to the voice diaphragm 73 through the voice coil 72, so as to perform the rigidity test of the reverse side. The second boss 51 is matched with the voice coil 72, and when the testing device is used, the second boss 51 is inserted into the voice coil 72, so that the second pressing piece 5 is fixed on the voice coil 72 when being stressed, and the testing precision is further improved.

In an actual test scenario, the force applying device 8 may be a weight, and if the weight is not placed at the central axis of the clamping assembly, the test accuracy may also be reduced, so that in this embodiment, the clamping assembly further includes the third clamping member 6. As shown in fig. 11 and 12, the third clamping member 6 is provided with a fourth through hole 61, and the fourth through hole 61 is matched with the weight and used for fixing the weight at the position of the central axis of the clamping assembly. The third clamping member body around the fourth through hole 61 is provided with a second flange 62, and when in use, the second flange 62 is inserted into the first through hole 11, so that the third clamping member 6 can be fixed on the first clamping member 1. It should be noted that, during the test, the force application device 8 can select weights of different models, so that a plurality of third clamping pieces 6 matched with the sizes of the weights can be arranged.

Reference throughout this specification to the description of the terms "preferred," "optional," or the like, as used in describing preferred embodiments of the present invention, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only intended to illustrate the details of the utility model, which is not limited to the above details, i.e. it is not intended that the utility model must be implemented in such detail. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of the raw materials of the product of the present invention, and the addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. A clamping assembly for testing the rigidity of a sound film is characterized by comprising a first clamping piece and a second clamping piece; the first clamping piece is provided with a first through hole; a first flange is arranged on the first clamping piece body around the first through hole; a second through hole is formed in the second clamping piece; a step structure is arranged on the second clamping piece body around the second through hole; the ladder structure is used for placing the sound film group to be tested; the first flange is inserted into the stepped structure.

2. The clamping assembly of claim 1, further comprising a positioning member; the positioning piece comprises a positioning piece body and a first boss arranged on the positioning piece body; the first boss comprises a limiting shoulder and a positioning column; the limiting shoulder is embedded into the second through hole and used for limiting the movement of the positioning piece and the second clamping piece; the positioning column is arranged on the limiting shoulder and used for positioning the sound film group at the position of the center shaft of the clamping assembly.

3. The clamping assembly of claim 2, wherein a third through hole is formed at a central axis of the positioning member.

4. The clamping assembly of claim 1 further comprising a first pressing member having a lower surface recessed to form a cavity for receiving a diaphragm of a diaphragm set.

5. The clamping assembly of claim 1, further comprising a second pressing member having a lower surface thereof convexly protruded to form a second boss for inserting a voice coil of the voice diaphragm set.

6. The clamping assembly of claim 1 further comprising a third clamping member having a fourth through hole, said third clamping member body surrounding said fourth through hole having a second flange for insertion into said first through hole.