CN220776082U

CN220776082U - Support three-dimensional rigidity test fixture for loudspeaker

Info

Publication number: CN220776082U
Application number: CN202322514480.0U
Authority: CN
Inventors: 陈进; 王世伟
Original assignee: Guoguang Electric Co Ltd
Current assignee: Guoguang Electric Co Ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-12
Anticipated expiration: 2033-09-15

Abstract

The utility model relates to the technical field of speakers, in particular to a support piece three-dimensional rigidity test fixture for a speaker. When carrying out the radial rigidity test of a piece, first centre gripping subassembly is followed a piece axial direction centre gripping piece, and the drag hook subassembly is pegged graft in the radial center of a piece along the axial direction of a piece, because the both ends of the connecting rod of tensile testing appearance are pegged graft respectively in first spliced eye and second spliced eye, under the tensile effect of tensile testing appearance, can measure the effort and the displacement that a piece received in radial direction this moment to can be fit and calculate the rigidity characteristic of a piece in radial each direction. When the axial rigidity test of the support piece is carried out, the support piece forms a support plane along the axial direction, the bottom can be directly placed on a flat plate for carrying out the pressurization test, after the support piece is clamped by the second clamping component, the acting force and the displacement parameter are measured by the pressing block component under the lower pressure of the compression tester, and the axial rigidity of the support piece can be obtained after fitting calculation.

Description

Support three-dimensional rigidity test fixture for loudspeaker

Technical Field

The utility model relates to the technical field of speakers, in particular to a support piece three-dimensional rigidity test fixture for a speaker.

Background

The support sheet for the loudspeaker refers to a vibrating diaphragm or a vibrating piece of the loudspeaker. Speakers are typically composed of one or more vibrating plates (also called diaphragms) that vibrate with a change in current, thereby producing sound. The diaphragm is generally made of a thin and light material so as to be able to vibrate rapidly, thereby generating acoustic waves. For three-dimensional stiffness testing of loudspeaker diaphragms, engineering test methods are often used to evaluate the performance of the diaphragm to ensure its reliability and sound performance in the loudspeaker. And the supporting force test is carried out as a whole, and does not represent the direction of rigidity and the relation between the supporting force and displacement. The rigidity K=F/S, the force is applied (or the force is generated by a weight with a certain weight), and displacement is generated, so that the rigidity of the support sheet is represented. At present, the support sheet is generally used for testing the axial rigidity. The function of the loudspeaker support piece, besides ensuring axial movement, simultaneously hopes to restrain radial movement and avoid core collision failure during the working of the loudspeaker, as the radial movement can lead to performance degradation of the loudspeaker or even core collision failure.

Therefore, a three-dimensional rigidity test fixture for a support sheet for a speaker is needed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a support piece three-dimensional rigidity test fixture for a loudspeaker, which can measure the axial rigidity and the radial rigidity of the support piece.

To achieve the purpose, the utility model adopts the following scheme:

the three-dimensional rigidity test fixture for the support sheet for the loudspeaker is connected to a mechanical tester, the mechanical tester comprises a tensile tester and a compression tester, the output end of the tensile tester is a connecting rod, the three-dimensional rigidity test fixture for the support sheet for the loudspeaker comprises a radial test clamping mechanism and an axial test clamping mechanism, the radial test clamping mechanism comprises a first clamping component, an adjustable clamping component, a drag hook component and a switching clamping component, the first clamping component is configured to clamp the support sheet along the axial direction of the support sheet, the drag hook component is inserted into the radial center of the support sheet along the axial direction of the support sheet, the drag hook component is provided with a first inserting hole along the radial direction of the support sheet, the adjustable clamping component is configured to clamp the edge of the first clamping component along the axial direction of the support sheet, the switching clamping component is provided with a second inserting hole along the radial direction of the support sheet, the first inserting hole and the second inserting hole are configured to be respectively connected with the two ends of the connecting rod of the tensile tester, the axial test clamping mechanism comprises a second clamping component and a pressing block component, the second clamping component is configured to clamp the axial direction of the support sheet along the axial direction of the support sheet, the axial direction of the support sheet is inserted into the pressing block component along the axial direction of the support sheet, and the pressing block is pressed down along the axial direction of the support sheet.

The first clamping assembly includes a first upper platen and a first lower platen, the first upper platen is provided with a first through hole, the first lower platen is provided with a second through hole, the first through hole and the second through hole are correspondingly arranged, and the first through hole and the second through hole form a clamping space.

Illustratively, the first upper platen and the first lower platen are threadably connected.

The first clamping assembly further comprises a plurality of threaded fasteners, the first upper pressure plate is provided with a plurality of first threaded holes, the first lower pressure plate is provided with a plurality of second threaded holes, and the first threaded holes and the second threaded holes are aligned and then connected through the plurality of threaded fasteners.

The adjustable clamping assembly comprises a base, a first clamping piece, a second clamping piece, a guide pillar and an adjusting screw, wherein the base comprises a mounting part, a first extending part and a second extending part which are connected with the mounting part, an adjustable space is arranged between the first extending part and the second extending part, a guide hole and a thread adjusting hole are formed in the second extending part, the first clamping piece is fixedly connected with the first extending part, the second clamping piece is slidably connected in the guide hole through the guide pillar, and the adjusting screw penetrates through and abuts against the second clamping piece.

The retractor assembly comprises a first column body and a second column body, wherein the first column body is vertically connected with the second column body, the first column body is inserted into the radial center of the support sheet, and the second column body is provided with a first insertion hole.

The adaptor fixture assembly comprises a connecting screw, a connecting nut, a connecting portion and a plug-in portion, wherein the plug-in portion is vertically connected with the connecting portion, the plug-in portion is provided with the second plug-in hole, the connecting screw penetrates through the connecting nut, and the connecting portion is connected with the base through the connecting screw and the connecting nut.

The second clamping assembly includes a second upper pressing plate and a second lower pressing plate, the second upper pressing plate and the second lower pressing plate are in threaded connection, the second upper pressing plate is provided with a third through hole, the second lower pressing plate is provided with a fourth through hole, the third through hole and the fourth through hole are correspondingly arranged, and the third through hole and the fourth through hole form a clamping space.

Illustratively, the press block assembly includes a shaft body inserted in a radial center of the support piece and a press piece mounted on the shaft body.

Illustratively, the tablet is a cylindrical tablet.

The beneficial effects of the utility model are as follows:

in the support piece three-dimensional rigidity test clamp for the loudspeaker, when the radial rigidity test of the support piece is carried out, the support piece is clamped by the first clamping component along the axial direction of the support piece, the drag hook component is inserted into the radial center of the support piece along the axial direction of the support piece, the adjustable clamping component is configured to clamp the edge of the first clamping component along the axial direction of the support piece, the second inserting holes are formed in the switching clamp component along the radial direction of the support piece, and as the two ends of the connecting rod of the tensile tester are respectively inserted into the first inserting holes and the second inserting holes, the acting force and the displacement of the support piece in the radial direction at the moment can be measured under the tensile action of the tensile tester, so that the rigidity characteristic of the support piece in each radial direction can be calculated in a fitting mode. When the axial rigidity test of the support piece is carried out, the support piece forms a support plane along the axial direction, the bottom can be directly placed on a flat plate for carrying out the pressurization test, after the support piece is clamped by the second clamping component, the acting force and the displacement parameter are measured by the pressing block component under the lower pressure of the compression tester, and the axial rigidity of the support piece can be obtained after fitting calculation.

Drawings

FIG. 1 is a schematic view of a radial test fixture according to the present utility model at one view;

FIG. 2 is a schematic view of a radial test fixture according to the present utility model from another perspective;

FIG. 3 is a schematic view of an axial test fixture according to the present utility model at one view;

fig. 4 is a schematic structural view of the axial test fixture according to the present utility model at another view angle.

In the figure:

100. radial test clamping mechanism;

110. a first clamping assembly; 111. a first upper platen; 1111. a first through hole; 112. a first lower pressure plate; 1121. a second through hole; 1122. a second threaded hole; 113. a threaded fastener;

120. an adjustable clamping assembly; 121. a base; 1211. a mounting part; 1212. a first extension; 1213. a second extension; 12131. a guide hole; 122. a first clamping member; 123. a second clamping member; 124. a guide post; 125. adjusting a screw;

130. a retractor assembly; 131. a first plug hole; 132. a first column; 133. a second column;

140. a transfer clamp assembly; 141. a second plug hole; 142. a connecting screw; 143. a coupling nut; 144. a connection part; 145. a plug-in part;

200. an axial test clamping mechanism; 210. a second clamping assembly; 211. a second upper platen; 2111. a third through hole; 212. a second lower pressure plate; 2121. a fourth through hole; 220. a briquetting assembly; 221. a shaft body; 222. tabletting;

300. and (5) supporting the tablet.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the present utility model, directional terms, such as "upper", "lower", "left", "right", "inner" and "outer", are used for convenience of understanding and are not to be construed as limiting the scope of the present utility model unless otherwise specified.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The embodiment provides a three-dimensional rigidity test fixture of a support piece for a loudspeaker, which is connected to a mechanical tester, wherein the mechanical tester comprises a tensile tester and a compression tester, and the output end of the tensile tester is a connecting rod. As shown in fig. 1 to 4, the support piece three-dimensional rigidity test fixture for a speaker comprises a radial test fixture 100 and an axial test fixture 200, the radial test fixture 100 comprises a first fixture 110, an adjustable fixture 120, a draw hook assembly 130 and a transfer fixture assembly 140, the first fixture 110 is used for clamping the support piece 300 along the axial direction of the support piece 300, the draw hook assembly 130 is inserted in the radial center of the support piece 300 along the axial direction of the support piece 300, the draw hook assembly 130 is provided with a first insertion hole 131 along the radial direction of the support piece 300, the adjustable fixture 120 is used for clamping the edge of the first fixture 110 along the axial direction of the support piece 300, the transfer fixture assembly 140 is provided with a second insertion hole 141 along the radial direction of the support piece 300, the first insertion hole 131 and the second insertion hole 141 are respectively connected with two ends of a connecting rod of a tensile tester, the axial test fixture 200 comprises a second fixture 210 and a pressing block assembly 220, the second fixture 210 is used for clamping the support piece 300 along the axial direction of the support piece 300, the pressing block assembly 220 is inserted in the radial center of the support piece 300 along the axial direction of the support piece 300, and the output end 220 of the pressing block assembly 300 is pressed down along the axial direction of the support piece 300.

So set up, when carrying out the radial rigidity test of propping up 300, first clamping assembly 110 is along propping up 300 axial direction centre gripping propping up 300, drag hook subassembly 130 is pegged graft in the radial center of propping up 300 along the axial direction of propping up 300, adjustable clamping assembly 120 is used for along the border of propping up 300 axial direction centre gripping first clamping assembly 110, the second spliced eye 141 has been seted up along propping up 300 to switching anchor clamps subassembly 140, because the both ends of the connecting rod of tensile testing appearance are pegged graft respectively in first spliced eye 131 and second spliced eye 141, under the tensile effect of tensile testing appearance, the effort and the displacement that are born at this moment propping up 300 in radial direction can be measured, thereby can the fit calculate the rigidity characteristic of propping up 300 in radial each direction. When the axial rigidity test of the support sheet 300 is performed, as the support sheet 300 forms a support plane along the axial direction, the bottom can be directly placed on a flat plate for the pressurization test, after the support sheet 300 is clamped by the second clamping assembly 210, the acting force and the displacement parameters are measured by the pressing block assembly 220 under the downward pressure of the compression tester, and the axial rigidity of the support sheet 300 can be obtained after fitting calculation.

Further, the first clamping assembly 110 in this embodiment includes a first upper pressing plate 111 and a first lower pressing plate 112, the first upper pressing plate 111 is provided with a first through hole 1111, the first lower pressing plate 112 is provided with a second through hole 1121, the first through hole 1111 and the second through hole 1121 are correspondingly arranged, and the first through hole 1111 and the second through hole 1121 form a clamping space. The first through hole 1111 and the second through hole 1121 are disposed at corresponding positions, i.e., they are located on the same vertical axis or aligned with each other, by which the holder 300 can be held in the holding space for the rigidity test, and the holder 300 can be firmly held for the three-dimensional rigidity test. This arrangement enables the strip 300 to be subjected to controlled forces and displacements during testing to evaluate its stiffness characteristics in the radial direction.

Further, the first upper press plate 111 and the first lower press plate 112 in the present embodiment are screwed. Further, the first clamping assembly 110 in this embodiment further includes a plurality of threaded fasteners 113, the first upper pressing plate 111 is provided with a plurality of first threaded holes, the first lower pressing plate 112 is provided with a plurality of second threaded holes 1122, and the plurality of first threaded holes and the plurality of second threaded holes 1122 are aligned and then connected by the plurality of threaded fasteners 113. The threaded fastener 113 may be a screw or bolt. The first and second pluralities of threaded holes 1122 are aligned so that threaded fasteners 113 may be connected therethrough. By tightening these threaded fasteners 113, a secure connection is formed between the first upper platen 111 and the first lower platen 112, thereby clamping the support sheet 300.

Further, the adjustable clamping assembly 120 in this embodiment includes a base 121, a first clamping member 122, a second clamping member 123, a guide post 124 and an adjusting screw 125, the base 121 includes an o-mounting portion 1211, a first extension portion 1212 and a second extension portion 1213 connected thereto, an adjustable space is provided between the first extension portion 1212 and the second extension portion 1213, the second extension portion 1213 is provided with a guide hole 12131 and a threaded adjusting hole, the first clamping member 122 is fixedly connected with the first extension portion 1212, the second clamping member 123 is slidably connected in the guide hole 12131 through the guide post 124, and the adjusting screw 125 is penetrated and abutted to the second clamping member 123. The bottom portion of the clamping assembly is used to provide stable support and connection. An adjustable space is provided between the first extension 1212 and the second extension 1213, and the first clamping member 122 and the second clamping member 123 may be installed in the adjustable space. The adjusting screw 125 passes through and abuts the second clamp 123. By tightening or loosening the adjustment screw 125, the position of the second clamp 123, and thus the degree of tightening of the clamping first clamp assembly 110, can be controlled.

Further, the drag hook assembly 130 in this embodiment includes a first cylinder 132 and a second cylinder 133, where the first cylinder 132 and the second cylinder 133 are vertically connected, the first cylinder 132 is inserted in the radial center of the support 300, and the second cylinder 133 is provided with a first insertion hole 131.

Further, the adapting clamp assembly 140 in this embodiment includes a connection screw 142, a connection nut 143, a connection portion 144, and a plug portion 145, where the plug portion 145 and the connection portion 144 are vertically connected, the plug portion 145 is provided with a second plug hole 141, the connection screw 142 is disposed through the connection nut 143, and the connection portion 144 is connected with the base 121 through the connection screw 142 and the connection nut 143. The connection screw 142 is a threaded rod having a threaded structure for connecting the base 121 and the connection portion 144. The coupling nut 143 is used to screw onto the coupling screw 142 to ensure a firm connection. The plugging portion 145 is vertically connected to the connecting portion 144, is located at one end of the connecting portion 144, and is provided with a second plugging hole 141.

Further, the second clamping assembly 210 in this embodiment includes a second upper pressing plate 211 and a second lower pressing plate 212, where the second upper pressing plate 211 and the second lower pressing plate 212 are in threaded connection, the second upper pressing plate 211 is provided with a third through hole 2111, the second lower pressing plate 212 is provided with a fourth through hole 2121, the third through hole 2111 and the fourth through hole 2121 are correspondingly arranged, and the third through hole 2111 and the fourth through hole 2121 form a clamping space. The second upper press plate 211 and the second lower press plate 212 are screw-coupled together, and they are fixed together by a screw structure. The second clamping assembly 210 clamps the support 300 in the clamping space for axial rigidity testing.

Further, the pressing block assembly 220 in this embodiment includes a shaft 221 and a pressing piece 222, the shaft 221 is inserted into the radial center of the support 300, and the pressing piece 222 is mounted on the shaft 221. The shaft 221 is inserted into a radially central portion of the supporter 300. It is located at the center of the support 300 for supporting the support 300. The pressing piece 222 is mounted on the shaft body 221, is positioned at the top of the shaft body 221, and can apply pressure to the supporting piece 300 through the position and adjustment of the shaft body 221. When the output end of the compression tester is pressed down, the pressing sheet 222 presses the support sheet 300, so that acting force and displacement parameters can be measured, and the axial rigidity of the support sheet 300 can be obtained after fitting calculation.

Further, the tablet 222 in this embodiment is a cylindrical tablet. The cylindrical shape may provide a uniform pressure distribution because of its relatively uniform surface area. This helps ensure that the tab 300 is subjected to uniform forces and reduces errors caused by uneven pressures that may occur during testing.

It is to be understood that the above-described embodiments of the present utility model are provided by way of illustration only and not limitation of the embodiments thereof. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The three-dimensional rigidity test fixture for the loudspeaker is connected to a mechanical tester, the mechanical tester comprises a tensile tester and a compression tester, and the output end of the tensile tester is a connecting rod, and is characterized in that the three-dimensional rigidity test fixture for the loudspeaker comprises a radial test clamping mechanism (100) and an axial test clamping mechanism (200), the radial test clamping mechanism (100) comprises a first clamping component (110), an adjustable clamping component (120), a drag hook component (130) and a switching clamp component (140), the first clamping component (110) is configured to clamp the support piece (300) along the axial direction of the support piece (300), the drag hook component (130) is inserted into the radial center of the support piece (300) along the axial direction of the support piece (300), the drag hook component (130) is provided with a first insertion hole (131) along the radial direction of the support piece (300), the adjustable clamping component (120) is configured to clamp the edge of the first clamping component (110) along the axial direction of the support piece (300), the switching clamp component (130) is provided with second insertion holes (141) along the axial direction of the support piece (300), and the two ends of the connecting rod (141) are respectively provided with the insertion holes (141), the axial test clamping mechanism (200) comprises a second clamping assembly (210) and a pressing block assembly (220), the second clamping assembly (210) is configured to clamp the support sheet (300) along the axial direction of the support sheet (300), the pressing block assembly (220) is inserted into the radial center of the support sheet (300) along the axial direction of the support sheet (300), and the output end of the compression tester is abutted with the pressing block assembly (220) to press downwards along the axial direction of the support sheet (300).

2. The three-dimensional rigidity test fixture for a loudspeaker support sheet according to claim 1, wherein the first clamping assembly (110) comprises a first upper pressing plate (111) and a first lower pressing plate (112), the first upper pressing plate (111) is provided with a first through hole (1111), the first lower pressing plate (112) is provided with a second through hole (1121), the first through hole (1111) and the second through hole (1121) are correspondingly arranged, and the first through hole (1111) and the second through hole (1121) form a clamping space.

3. The support sheet three-dimensional rigidity testing jig for speakers according to claim 2, wherein the first upper pressure plate (111) and the first lower pressure plate (112) are screwed.

4. A three-dimensional rigidity testing jig for a speaker strip according to claim 3, wherein said first clamping assembly (110) further comprises a plurality of screw fasteners (113), said first upper platen (111) is provided with a plurality of first screw holes, said first lower platen (112) is provided with a plurality of second screw holes (1122), and a plurality of said first screw holes and a plurality of said second screw holes (1122) are aligned and then connected by a plurality of said screw fasteners (113).

5. The three-dimensional rigidity test fixture for a loudspeaker according to claim 1, wherein the adjustable clamping assembly (120) comprises a base (121), a first clamping piece (122), a second clamping piece (123), a guide pillar (124) and an adjusting screw (125), the base (121) comprises a mounting part (1211), a first extension part (1212) and a second extension part (1213) connected with the mounting part, an adjustable space is arranged between the first extension part (1212) and the second extension part (1213), a guide hole (12131) and a threaded adjusting hole are formed in the second extension part (1213), the first clamping piece (122) is fixedly connected with the first extension part (1212), the second clamping piece (123) is connected in the guide hole (12131) in a sliding manner through the guide pillar (124), and the adjusting screw (125) penetrates and abuts against the second clamping piece (123).

6. The three-dimensional rigidity test fixture for a loudspeaker support plate according to claim 1, wherein the drag hook assembly (130) comprises a first column body (132) and a second column body (133), the first column body (132) and the second column body (133) are vertically connected, the first column body (132) is inserted into the radial center of the support plate (300), and the second column body (133) is provided with a first insertion hole (131).

7. The support sheet three-dimensional rigidity test fixture for a speaker according to claim 5, wherein the adapting fixture assembly (140) comprises a connecting screw (142), a connecting nut (143), a connecting portion (144) and a plug-in portion (145), the plug-in portion (145) and the connecting portion (144) are vertically connected, the plug-in portion (145) is provided with the second plug-in hole (141), the connecting screw (142) is arranged through the connecting nut (143), and the connecting portion (144) is connected with the base (121) through the connecting screw (142) and the connecting nut (143).

8. The support three-dimensional rigidity test fixture for a loudspeaker according to claim 1, wherein the second clamping assembly (210) comprises a second upper pressing plate (211) and a second lower pressing plate (212), the second upper pressing plate (211) and the second lower pressing plate (212) are in threaded connection, a third through hole (2111) is formed in the second upper pressing plate (211), a fourth through hole (2121) is formed in the second lower pressing plate (212), the third through hole (2111) and the fourth through hole (2121) are correspondingly arranged, and a clamping space is formed by the third through hole (2111) and the fourth through hole (2121).

9. The support sheet three-dimensional rigidity test jig for speakers according to claim 1, wherein the press block assembly (220) comprises a shaft body (221) and a press sheet (222), the shaft body (221) is inserted into the radial center of the support sheet (300), and the press sheet (222) is mounted on the shaft body (221).

10. The loudspeaker support three-dimensional rigidity testing jig of claim 9 wherein said press piece (222) is a cylindrical press piece.