CN107404694B - Loudspeaker box and manufacturing method thereof - Google Patents

Abstract

The invention relates to the field of acoustoelectrics and discloses a loudspeaker box. The loudspeaker box comprises a first shell, a second shell and a sound generating single body, wherein the first shell is provided with a through hole facing the sound generating single body and a metal sheet which is integrally formed with the first shell and covers the through hole, the metal sheet comprises a main body part and a fixing part, the main body part is horizontally arranged, the fixing part is arranged at the edge of the main body part, the fixing part comprises a connecting part and a first folding edge, the connecting part protrudes and extends along the horizontal direction, one side of the connecting part is far away from the main body part, the first folding edge comprises a bottom connected with the connecting part, a top edge, the bottom is opposite to the bottom and is far away from the connecting part, the side edge is connected with the bottom and the top edge, and the fixing part further comprises a second. The invention also provides a manufacturing method of the loudspeaker box. The loudspeaker and the loudspeaker box manufacturing method provided by the invention have the advantages that the consumption of a connecting material is not needed, the cost is reduced, and the polyester material is not needed to be pasted to seal the cavity.

Description

Loudspeaker box and manufacturing method thereof

Technical Field

The invention relates to the field of acoustoelectrics, in particular to a loudspeaker box and a manufacturing method of the loudspeaker box.

Background

In the prior art, a loudspeaker box usually needs to be subjected to embedded injection molding by using a steel sheet, the steel sheet needs to be positioned in the process, in the common positioning modes, one mode is continuous-gear positioning, a continuous-gear structure needs to be arranged on a metal sheet for continuous-gear positioning, and the other mode is large-area hole opening positioning of the steel sheet, and the mode needs to large-area hole opening positioning on the injection molding steel sheet.

The inventor finds that at least the following problems exist in the prior art: even shelves material is easily consumed to the positioning method that links to the shelves to increase cost, though not need consume and link the shelves material to the steel sheet large tracts of land trompil location, because open the locating hole on the steel sheet large tracts of land, the cavity leakproofness can be not good, need in addition to paste to establish polyester material behind the metal sheet and cover the trompil in order to seal the cavity. Therefore, it is necessary to provide a structure of a speaker to solve the above problems.

Disclosure of Invention

The invention aims to provide a loudspeaker box, which enables injection molding steel sheets to be free from consuming a continuous material, reduces the cost and does not need to be additionally attached with a polyester material to seal a cavity.

In order to solve the above technical problem, an embodiment of the present invention provides a speaker box, including a first housing, a second housing disposed opposite to the first housing and configured to form an accommodation space, and a sound generating unit disposed in the accommodation space, wherein the first housing is provided with a through hole facing the sound generating unit and a metal sheet integrally formed with the first housing and covering the through hole, the metal sheet includes a horizontally disposed main body portion and a fixing portion disposed at an edge of the main body portion, the fixing portion includes a connecting portion protruding from the edge of the main body portion in a horizontal direction, and a first folded edge protruding from a side of the connecting portion away from the main body portion in a bending manner, the first folded edge includes a bottom connected to the connecting portion, a top edge disposed opposite to the bottom and away from the connecting portion, and a side edge connecting the bottom and the top edge, the fixing part also comprises a second folded edge which is bent and protruded from the lateral margin.

The invention also provides a manufacturing method of the loudspeaker box, which comprises the following steps: stamping a metal sheet with a main body part to form a fixing part at the edge of the main body part, wherein the fixing part comprises a connecting part protruding from the edge of the main body part along the horizontal direction, and a first folding edge bent and protruding from one side of the connecting part far away from the main body part, the first folding edge comprises a bottom connected with the connecting part, a top edge arranged opposite to the bottom and far away from the connecting part, and a side edge connecting the bottom and the top edge, and the fixing part also comprises a second folding edge bent and protruding from the side edge; providing an insert having a protrusion, and enabling the first folded edge and the second folded edge of the metal sheet to abut against the protrusion from different directions so as to fix the metal sheet; and carrying out embedded injection molding on the metal sheet fixed on the insert to manufacture the loudspeaker box.

Compared with the prior art, the embodiment of the invention has the advantages that the first folding edge extending from the connecting part at the edge of the main body part in a bending way and the second folding edge extending from the first folding edge are arranged on the metal sheet, so that the insert can be used for abutting against the first folding edge and the second folding edge from different directions to be positioned in the injection molding process, a connecting structure is not required to be arranged on the metal sheet, connecting material is saved, the cost is reduced, and the phenomenon that a hole is formed in the metal sheet and a polyester material is not required to be attached to the metal sheet to cover the hole to form a sealed cavity is avoided.

In addition, the second folded edge is perpendicular to the first folded edge. Through setting first hem and second hem to mutually perpendicular's structure for the sheetmetal is difficult to the off-position with first casing, has guaranteed the fastness that sheetmetal and first casing combine.

In addition, the first folded edge and the second folded edge are both perpendicular to the main body portion. Through all setting first hem and second hem to perpendicular with the main part, further increased the fastness between sheetmetal and the first casing.

In addition, the second flange protrudes from the side edge toward the main body portion.

In addition, the second flange protrudes from the side edge toward a side away from the main body portion.

In addition, the second folded edge extends from one end of the lateral edge, which is far away from the connecting part, and the second folded edge is not adjacent to the connecting part.

In addition, a through hole is formed in the first folding edge. Through set up the through-hole on first hem for can utilize this through-hole to carry out good combination between sheetmetal and the first casing, finally make the sheetmetal fixed more firmly.

In addition, the metal sheet comprises a plurality of fixing parts which are respectively arranged on two opposite sides of the main body part. Through increasing a plurality of fixed parts that are used for fixed sheetmetal and first casing, and a plurality of fixed parts set up respectively in the both sides of main part to the fastness that sheetmetal and first casing combine has been increased.

In addition, the step of stamping a metal sheet having a body portion forms the first and second flaps perpendicular to each other on an edge of the body portion.

Drawings

Fig. 1 is an exploded view of a speaker box and insert in a first embodiment of the present invention;

fig. 2 is a perspective assembly view of a speaker box in a first embodiment of the present invention;

FIG. 3 is a partial enlarged view of portion A shown in FIG. 1;

fig. 4 is a flowchart of a method for manufacturing a speaker box according to a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solutions claimed in the claims of the present invention can be implemented without these technical details and with various changes and modifications based on the following embodiments.

A first embodiment of the present invention relates to a speaker box 100, and as shown in fig. 1, 2, and 3, the speaker box 100 includes: the sound-generating device comprises a first shell 11 and a second shell (not shown) arranged opposite to the first shell 11, wherein the first shell 11 and the second shell are assembled to form an accommodating space, and a sound-generating unit is arranged in the accommodating space. The first housing 11 is provided with a through hole 13 and a metal sheet 15 covering the through hole 13, and the metal sheet 15 is integrally formed with the first housing 11. The through hole 13 is used for facing the sounding single body when being assembled with the sounding single body subsequently. The metal sheet 15 includes a body portion 151 disposed horizontally and a fixing portion 152 disposed at an edge of the body portion 151. The fixing portion 152 includes a connecting portion 1521 protruding from an edge of the main body portion 151 along a horizontal direction, and a first folding edge 1522 bending and protruding from a side of the connecting portion 1521 away from the main body portion 151. The first fold 1522 includes a bottom portion 1522a connected to the connecting portion 1521, a top edge 1522b disposed opposite the bottom portion 1522a and away from the connecting portion 1521, and a side edge 1522c connecting the bottom portion 1522a and the top edge 1522 b. The fixing portion 152 further includes a second folded edge 1523 bent and protruded from the side edge 1522 c.

In the present embodiment, the metal sheet 15 is integrally formed with the first housing 11, and in the specific manufacturing process, an insert 21 having a protrusion 19 may be provided, the first flange 1522 and the second flange 1523 of the metal sheet 15 are abutted against the protrusion 19 from different directions to fix the metal sheet 15, and the metal sheet 15 fixed on the insert 21 is insert injection molded to manufacture the speaker box (i.e., the first housing 11).

Compared with the prior art, the embodiment of the invention uses the fixing part 152 on the metal sheet 15 to position the metal sheet 15, and specifically, the metal sheet 15 is provided with the first folding edge 1522 extending from the connecting part 1521 at the edge of the main body part 151 in a bending manner and the second folding edge 1523 extending from the first folding edge 1522 in a bending manner, so that the metal sheet 15 can be positioned by using the insert 21 to abut against the first folding edge 1522 and the second folding edge 1523 from different directions in the injection molding process, and the metal sheet 15 is not easy to shift, thereby firmly fixing the metal sheet 15. It is worth mentioning that, according to the structure of the speaker box 100, a connecting structure is not required to be arranged on the metal sheet 15, so that connecting materials are saved, the cost is reduced, meanwhile, holes are prevented from being formed in the metal sheet 15, and a polyester material is not required to be attached to the metal sheet 15 to cover the holes to form a sealed cavity.

Preferably, in the present embodiment, the second fold 1523 is perpendicular to the first fold 1522. By arranging the first folding edge 1522 and the second folding edge 1523 to be perpendicular to each other, the insert 21 can position the metal sheet 15 from two directions (as shown in fig. 1) perpendicular to each other X, Y, so that the first housing 11 is less prone to dislocation, and the accuracy of injection molding of the metal sheet 15 and the first housing 11 is ensured.

Further, in the present embodiment, the first fold 1522 and the second fold 1523 are both perpendicular to the main body 151. By providing the first folding edge 1522 and the second folding edge 1523 perpendicular to the main body 151, the insert 21 can position the metal sheet 15 from three directions X, Y, Z (shown in fig. 1) perpendicular to each other, thereby further ensuring the accuracy of injection molding the metal sheet 15 with the first housing 11. Specifically, in the present embodiment, the first fold 1522 is made to assist the positioning of the metal sheet 15 from the horizontal direction indicated by X in fig. 1, the second fold 1523 is made to assist the positioning of the metal sheet 15 from the horizontal direction indicated by Y in fig. 1, and the main body 151 is made to assist the positioning of the metal sheet 15 from the vertical direction indicated by Z in fig. 1.

It is understood that the specific extending direction of the second flange 1523 can be various, for example, in the present embodiment, the second flange 1523 protrudes from the side edge 1522c toward the main body 151 along the direction opposite to the direction X shown in fig. 1; in other practical modifications, the second fold 1523 may also protrude from the side edge 1522 in the direction X shown in fig. 1 toward the side away from the main body 151.

It should be noted that in the present embodiment, the second flange 1523 extends from an end of the side edge 1522c away from the connecting portion 1521, and the second flange 1523 and the connecting portion 1521 are not adjacent to each other. The second flange 1523 is provided separately from the connecting portion 1521, so that the first flange 1522 and the second flange 1523 can be formed in a one-time stamping manner. Of course, those skilled in the art will appreciate that any extension structure of the second flange 1523 will not affect the technical effect of the present embodiment.

It should be noted that the first folding edge 1522 may further be provided with a through hole 17. Through set up through-hole 17 on first hem 1522 for in the in-process of carrying out embedded injection moulding to sheetmetal 15, the through-hole 17 can be filled to the plastic material, thereby increases the area of contact between sheetmetal 15 and first casing 11, makes the fastness reinforcing between the two from this. The through hole 17 is provided to further enhance the firmness between the metal sheet 15 and the first housing 11, but even if the through hole 17 is not formed in the first folding edge 1522, the technical effects of saving the connecting material and sealing the cavity by adhering the polyester material are not hindered.

In addition, the metal sheet 15 may include a plurality of fixing portions 152, and the plurality of fixing portions 152 are respectively disposed at opposite sides of the main body portion 151. It can be understood that the greater the number of the fixing portions 152, the higher the firmness of the combination of the metal sheet 15 and the first housing 11, so in the present embodiment, the firmness of the combination of the metal sheet 15 and the first housing 11 is increased by adding a plurality of fixing portions 152 for fixing the metal sheet 15 and the first housing 11 on both sides of the metal sheet.

It should be noted that, in the present embodiment, in order to make the metal sheet 15 and the first housing 11 more stable, the fixing portions 152 disposed on the two sides of the main body 151 may be further disposed opposite to each other in position, so that the fixing forces distributed on the two sides of the metal sheet 15 are more balanced, and the purpose of making the metal sheet 15 and the first housing 11 more stable is finally achieved.

The second embodiment of the present invention further provides a method for manufacturing a housing of a speaker box 100, in this embodiment, the speaker box 100 is the speaker box 100 in the first embodiment, as shown in fig. 4, and specifically includes the following steps:

and S101, stamping a metal sheet with a main body part, and forming a first folding edge and a second folding edge on the main body part.

Specifically, in step S101, the metal sheet 15 having the main body 151 as shown in fig. 1 is punched to form the fixing portion 152 at the edge of the main body 151, the fixing portion 152 includes a connecting portion 1521 protruding from the edge of the main body 151 in a horizontal direction, and a first folding edge 1522 bent and protruding from the connecting portion 1521 on a side away from the main body 151, the first folding edge 1522 includes a bottom portion 1522a connected to the connecting portion, a top edge 1522b disposed opposite to the bottom portion 1522a and away from the connecting portion 1521, and a side edge 1522c connecting the bottom portion 1522a and the top edge 1522b, and the fixing portion 152 further includes a second folding edge 1523 bent and protruding from the side edge 1522 c.

The metal sheet 15 may be made of stainless steel or other metal materials, and generally speaking, the metal material has strong resistance to permanent deformation and fracture under the action of external force, and has a long service life.

And S102, providing an insert with a bulge, and enabling the first folded edge and the second folded edge of the metal sheet to abut against the bulge from different directions to fix the metal sheet.

Specifically, step S101 provides the insert 21 with the protrusion 19 as shown in fig. 1, and the first flange 1522 and the second flange 1523 of the metal sheet 15 are abutted against the protrusion 19 from different directions to fix the metal sheet 15.

And S103, performing embedded injection molding on the metal sheet fixed on the insert to manufacture the loudspeaker box.

Specifically, the housing is the first housing 11 in the first embodiment, and in step S103, injection molding, also called injection molding, is a molding method of injection and molding. Specifically, a method of stirring a completely molten plastic material at a certain temperature by a screw, injecting the material into a cavity under high pressure, and cooling and solidifying the material to obtain a molded article. The method has the advantages of high production speed, high efficiency, automation of operation, various colors and varieties, accurate product size, easy replacement of products and capability of forming workpieces with complex shapes, and the shapes of the workpieces can be changed from simple to complex and the sizes of the workpieces can be changed from large to small.

Compared with the prior art, the method for manufacturing the loudspeaker box 100 shell has the same technical effects as the corresponding devices, and the details are not repeated here to avoid repetition.

It is noted that, in the present embodiment, the step S101 forms the first folding edge 1522 and the second folding edge 1523 perpendicular to each other on the edge of the main body portion 151. Specifically, by arranging the first folding edge 1522 and the second folding edge 1523 to be perpendicular to each other, the insert 21 can position the metal sheet 15 from two directions (as shown in fig. 1) that are perpendicular to each other X, Y, so that the metal sheet 15 is better fixed on the insert 21, and the housing (the first housing 11) is less prone to displacement, thereby ensuring the accuracy of injection molding of the metal sheet 15 and the first housing 11.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims (4)

1. A loudspeaker box comprises a first shell, a second shell which is arranged opposite to the first shell and assembled to form an accommodating space, and a sound generating single body arranged in the accommodating space, the first shell is provided with a through hole facing the sounding monomer and a metal sheet which is integrally formed with the first shell and covers the through hole, it is characterized in that the metal sheet comprises a main body part arranged horizontally and a fixing part arranged on the edge of the main body part, the fixing part comprises a connecting part protruding from the edge of the main body part along the horizontal direction, the first folding edge comprises a bottom connected with the connecting part, a top edge arranged opposite to the bottom and far away from the connecting part, and a side edge connecting the bottom and the top edge, and further comprises a second folding edge bent and protruded from the side edge;

the second folded edge is perpendicular to the first folded edge;

the first folded edge and the second folded edge are both perpendicular to the main body part;

the second flange protrudes from the side edge toward one side of the main body.

2. The loudspeaker enclosure of claim 1, wherein the first fold defines a through opening.

3. A loudspeaker enclosure according to claim 1, wherein the metal sheet comprises a plurality of said fixing portions, said plurality of fixing portions being respectively disposed on opposite sides of the main body portion.

4. A method for manufacturing a loudspeaker box comprises the following steps:

stamping a metal sheet with a main body part to form a fixing part at the edge of the main body part, wherein the fixing part comprises a connecting part protruding from the edge of the main body part along the horizontal direction, and a first folding edge bent and protruding from one side of the connecting part far away from the main body part, the first folding edge comprises a bottom connected with the connecting part, a top edge arranged opposite to the bottom and far away from the connecting part, and a side edge connecting the bottom and the top edge, and the fixing part also comprises a second folding edge bent and protruding from the side edge;

providing an insert having a protrusion, and enabling the first folded edge and the second folded edge of the metal sheet to abut against the protrusion from different directions so as to fix the metal sheet;

performing injection molding on a metal sheet fixed on the insert as an insert to manufacture the loudspeaker box;

the step of stamping a metal sheet having a body portion forms the first and second flaps perpendicular to each other on an edge of the body portion;

the first folded edge and the second folded edge are both perpendicular to the main body part;

the second flange protrudes from the side edge toward one side of the main body.

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