Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand and a magnetic circuit assembly arranged on the basin stand, the magnetic circuit assembly comprises two pieces of first side magnetic steel which are arranged in parallel at a certain interval, the basin stand is provided with two convex parts which are arranged in parallel, and the convex parts extend upwards from the basin stand; wherein in the first direction of the basin stand, the two first edge magnetic steels are located between the two protruding parts, the protruding parts are located at positions close to the outer side surfaces of the first edge magnetic steels, and the outer side surfaces of the first edge magnetic steels are bonded with the adjacent protruding parts. According to the utility model, the boss corresponding to the position of the first side magnetic steel is arranged on the frame, so that the boss and the first side magnetic steel can be bonded together. The protruding part is additionally arranged on the frame, so that the glue bonding area can be increased, the bonding strength can be improved, the bonding strength requirement can be met, and the performance of the sound production unit can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit. Background Art

[0002] With the continuous development of consumer electronic products such as mobile phones and tablets, as well as large wearable electronic devices such as AR / VR, these products have put forward higher standards in terms of appearance and performance optimization. Among them, the sound unit, as an important component of such products, plays a vital role in the sound amplifier system, so its performance optimization and size reduction become particularly important. However, while making the sound unit thinner and lighter, the volume of the magnetic circuit component will also be reduced accordingly, which will cause the bonding strength of the side magnetic steel to fail to meet the preset requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sound unit to solve the problem that the bonding strength of the side magnetic steel of the existing sound unit is reduced and cannot meet the bonding strength requirement.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A sound-emitting unit comprises a basin frame and a magnetic circuit assembly arranged on the basin frame, wherein the magnetic circuit assembly comprises two first side magnetic steels arranged in parallel at a certain distance, and the basin frame is provided with two parallel protrusions, and the protrusions extend upward from the basin frame; wherein, in the first direction of the basin frame, the two first side magnetic steels are located in the middle of the two protrusions, the protrusions are located near the outer side surfaces of the first side magnetic steels, and the outer side surfaces of the first side magnetic steels are bonded to the adjacent protrusions.

[0006] Furthermore, in the sound-emitting unit described in the utility model, the basin frame includes a basin frame body and a support plate, and the support plate is fixed on the basin frame body.

[0007] Furthermore, in the sound-emitting unit described in the utility model, the raised portion includes a retaining wall, the retaining wall is arranged on the side of the basin frame body extending along the second direction, and the retaining wall is provided with an inwardly recessed hollow portion on the side surface of the retaining wall close to the first side magnetic steel.

[0008] Furthermore, in the sound-emitting unit described in the present invention, the hollow portion includes a first hollow portion and a second hollow portion that are interconnected, the cross-section of the first hollow portion in a direction perpendicular to the height of the basin frame remains unchanged, and the cross-section of the second hollow portion in a direction perpendicular to the height of the basin frame gradually increases in a direction away from the basin frame.

[0009] Furthermore, in the sound-emitting unit described in the present invention, the first side magnetic steel is arranged on the supporting plate, and the first side magnetic steel is located at a position spaced a first distance from the retaining wall.

[0010] Furthermore, in the sound-emitting unit described in the utility model, the raised portion includes a flange, the flange is arranged on the support plate, the flange includes a base and a top connected to each other, the cross-section of the base in the direction perpendicular to the height of the basin frame remains unchanged, and the cross-section of the top in the direction perpendicular to the height of the basin frame gradually decreases in the direction away from the support plate.

[0011] Furthermore, in the sound-emitting unit described in the present invention, the first side magnetic steel is arranged on the supporting plate, and the first side magnetic steel is located at a position spaced a second distance from the flange.

[0012] Furthermore, in the sound-emitting unit described in the present invention, the magnetic circuit assembly further includes a plurality of second side magnetic steels, and the second side magnetic steels are arranged on the side of the basin frame extending along the first direction.

[0013] Furthermore, in the sound-emitting unit described in the utility model, the basin frame is provided with blocks at both ends of the second side magnetic steel.

[0014] Furthermore, in the sound-emitting unit described in the present invention, the magnetic circuit assembly includes a central magnetic steel, and the central magnetic steel is located in an area surrounded by the first side magnetic steel and the second side magnetic steel.

[0015] The beneficial effect of the utility model is that the first side magnetic steel is installed on the basin frame, and then a protrusion corresponding to the position of the first side magnetic steel is arranged on the basin frame, and the protrusion can be used for glue retention and bonding, and glue is arranged between the protrusion and the adjacent side of the first side magnetic steel, so that the protrusion and the first side magnetic steel can be bonded together. In other words, by adding an additional protrusion extending upward on the basin frame, the side of the first variable magnetic steel can also be bonded to the protrusion on the basin frame, thereby increasing the glue bonding area and improving the bonding strength to meet the bonding strength requirements, thereby ensuring the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the sound-emitting unit of the utility model in one embodiment at one viewing angle;

[0017] Figure 2 It is a structural schematic diagram of the sound-emitting unit of the utility model in another viewing angle under one implementation mode;

[0018] Figure 3It is a structural explosion diagram of the sound-emitting unit of the utility model in one embodiment at one viewing angle;

[0019] Figure 4 for Figure 2 A schematic cross-sectional view of the sound generating unit shown;

[0020] Figure 5 for Figure 1 The schematic diagram of the structure of the sound unit shown after some components are hidden;

[0021] Figure 6 It is a structural schematic diagram of the sound-emitting unit of the utility model in another embodiment from a viewing angle;

[0022] Figure 7 It is a structural explosion diagram of the sound-emitting unit of the utility model in another embodiment from a viewing angle;

[0023] Figure 8 for Figure 6 A schematic cross-sectional view of the sound generating unit shown;

[0024] Fig. 9 It is a structural explosion diagram of the sound-emitting unit described in the utility model under another embodiment and from another perspective.

[0025] Description of labels:

[0026] 1. Basin frame; 11. Basin frame body; 12. Support plate; 13. Block; 14. Fixing block;

[0027] 2. The first side magnetic steel;

[0028] 3. retaining wall; 31. hollow part;

[0029] 4. Flanging;

[0030] 5. Second side magnetic steel;

[0031] 6. Center magnet;

[0032] 7. Yoke iron. DETAILED DESCRIPTION

[0033] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0034] Please refer to Figure 1 as well as Figure 2The utility model provides a sound unit, which includes a basin frame 1 and a magnetic circuit component arranged on the basin frame 1, the magnetic circuit component includes two first side magnetic steels 2 arranged in parallel at a certain distance, the basin frame is provided with two parallel raised portions, and the raised portions extend upward from the basin frame; wherein, in the first direction of the basin frame, the two first side magnetic steels 2 are located in the middle of the two raised portions, the raised portions are located close to the outer side surfaces of the first side magnetic steels, and the outer side surfaces of the first side magnetic steels are bonded to the adjacent raised portions.

[0035] From the above description, it can be seen that the beneficial effect of the utility model is that the first side magnetic steel 2 is installed on the basin frame 1, and then a protrusion corresponding to the position of the first side magnetic steel 2 is provided on the basin frame 1, and the protrusion can be used for glue retention and bonding, and glue is provided between the protrusion and the adjacent side of the first side magnetic steel 2, so that the protrusion and the first side magnetic steel 2 can be bonded together. In other words, by adding an additional protrusion extending upward on the basin frame, the side of the first variable magnetic steel can also be bonded to the protrusion on the basin frame, thereby increasing the glue bonding area and improving the bonding strength to meet the bonding strength requirements, thereby ensuring the performance of the sound unit.

[0036] Furthermore, in the sound-emitting unit described in the present invention, the basin frame 1 includes a basin frame body 11 and a support plate 12, and the support plate is fixed on the basin frame body.

[0037] In the above technical solution of the utility model, a support plate 12 for installing the side magnetic steel is provided on the basin frame 1, and a card slot is provided on the side edge of the basin frame body along the second direction (corresponding to the two side edges where the first side magnetic steel is provided) and the corners of the basin frame body, and the support plate is inserted into the card slot. In addition, the basin frame body 11 and the support plate 12 can be an integrated structure formed by integral processing, and the processing method includes but is not limited to injection molding, hot pressing, etc. By providing the support plate 12 on the basin frame 1, it is convenient to install the side magnetic steel.

[0038] Furthermore, in the sound-emitting unit described in the present invention, the raised portion includes a retaining wall 3, which is arranged on the side of the basin frame body 11 extending along the second direction, and the retaining wall 3 is provided with an inwardly recessed hollow portion 31 on the side close to the first side magnetic steel 2.

[0039] In the above technical scheme of the utility model, a retaining wall 3 is arranged on the basin frame main body 11, which can increase the glue bonding area between the first side magnetic steel 2 and the basin frame 1. By arranging glue between the first side magnetic steel 2 and the retaining wall 3, the side wall of the first side magnetic steel 2 is glued, thereby improving the bonding strength. On this basis, an inwardly recessed hollow portion 31 is arranged on the retaining wall 3, and the hollow portion 31 can be used to retain glue so as to bond the first side magnetic steel 2 and the retaining wall 3 together by glue.

[0040] Furthermore, in the sound-emitting unit described in the present invention, the hollow portion 31 includes a first hollow portion and a second hollow portion that are interconnected, the cross-section of the first hollow portion in a direction perpendicular to the height of the basin frame 1 remains unchanged, and the cross-section of the second hollow portion in a direction perpendicular to the height of the basin frame 1 gradually increases in a direction away from the basin frame 1.

[0041] In the above technical solution of the present invention, the cross-section of the opening of the hollow portion 31 (i.e., the second hollow portion) in the height direction perpendicular to the basin frame 1 gradually increases in the direction away from the basin frame 1, that is, the glue coating gap between the first side magnetic steel 2 and the side wall of the flange 4 increases with height, thereby better retaining and setting the glue.

[0042] Furthermore, in the sound-emitting unit described in the present invention, the first side magnetic steel 2 is disposed on the supporting plate 12 , and the first side magnetic steel 2 is located at a position spaced a first distance from the retaining wall 3 .

[0043] In the above technical solution of the utility model, the first side magnetic steel 2 is arranged at a position separated from the retaining wall 3 by a first distance, so that a gap for accommodating glue is retained between the first side magnetic steel 2 and the retaining wall 3, so that the first side magnetic steel 2 and the retaining wall 3 can be bonded by glue.

[0044] Furthermore, in the sound-emitting unit described in the present invention, the raised portion includes a flange 4, and the flange 4 is arranged on the support plate 12. The flange 4 includes a base and a top that are connected to each other. The cross-section of the base in the direction perpendicular to the height of the basin frame 1 remains unchanged, and the cross-section of the top in the direction perpendicular to the height of the basin frame 1 gradually decreases in the direction away from the support plate 12.

[0045] In the above technical solution of the utility model, a flange 4 is provided on the support plate 12 to increase the glue bonding area between the first side magnetic steel 2 and the basin frame 1. By providing glue between the first side magnetic steel 2 and the flange 4, the side wall of the first side magnetic steel 2 is glued, thereby improving the bonding strength. On this basis, the cross section of the top of the flange 4 in the vertical height direction of the basin frame 1 is gradually reduced in the direction away from the support plate 12, so that the glue coating gap between the first side magnetic steel 2 and the side wall of the flange 4 increases with the height, thereby better retaining and setting the glue.

[0046] Furthermore, in the sound-emitting unit described in the present invention, the first side magnetic steel 2 is mounted on the support plate 12 , and the first side magnetic steel 2 is located at a position spaced a second distance from the flange 4 .

[0047] In the above technical solution of the utility model, the first side magnetic steel 2 is arranged at a position separated from the flange 4 by a second distance, so that a gap for accommodating glue is retained between the first side magnetic steel 2 and the flange 4, so that the first side magnetic steel 2 and the flange 4 can be bonded by glue.

[0048] Furthermore, in the sound-generating unit described in the present invention, the magnetic circuit assembly further includes a plurality of second side magnetic steels 5 , and the second side magnetic steels 5 are arranged on the side of the basin frame 1 extending along the first direction.

[0049] In the above technical solution of the utility model, by setting a plurality of side magnets, they can assist the central magnet to provide a stable magnetic field environment for the voice coil. The plurality of side magnets together with the central magnet constitute a complete magnetic circuit system, which can generate a uniform magnetic field, ensuring that the voice coil generates a stable force when cutting the magnetic lines, thereby driving the diaphragm to move and produce clear and accurate sound.

[0050] Furthermore, in the sound unit described in the present invention, the basin frame 1 is provided with blocks 13 at both ends of the second side magnetic steel 5 .

[0051] In the above technical solution of the utility model, the clamping block 13 is arranged on the side of the basin frame 1 extending along the first direction. By arranging the clamping blocks 13 at both ends of the second side magnetic steel 5, the second side magnetic steel 5 can be fixed in the first direction to improve the stability of the second side magnetic steel 5 on the basin frame 1.

[0052] Furthermore, in the sound-emitting unit described in the present invention, the magnetic circuit assembly includes a central magnetic steel, and the central magnetic steel is located in an area surrounded by the first side magnetic steel 2 and the second side magnetic steel 5 .

[0053] In the above technical solution of the utility model, the central magnet is arranged in the area surrounded by the first side magnet 2 and the second side magnet 5. The central magnet can generate a magnetic field, and the diaphragm can be subjected to the magnetic force through the generated magnetic field, thereby vibrating and generating sound.

[0054] Please refer to Figures 1 to 5 , Embodiment 1 of the present utility model is:

[0055] A sound unit, the sound unit comprises a basin frame 1 and a magnetic circuit component arranged on the basin frame 1, such as Figure 1As shown, the shape of the basin frame 1 is similar to a hollow rectangular object. The basin frame 1 includes a basin frame body 11 and a support plate 12 arranged on the basin frame body 11. The support plate is fixed to the basin frame body 11. The shape of the support plate 12 is similar to a rectangular plate with a hollow middle. The four sides of the rectangular plate all protrude inward to place side magnets (i.e., two first side magnets and two second side magnets). The above-mentioned magnetic circuit assembly includes a central magnet, two first side magnets 2 and two second side magnets 5. The central magnet is located in the area surrounded by the first side magnets 2 and the second side magnets 5. The volume of the first side magnet 2 is smaller than that of the second side magnet 5, and the first side magnet 2 is arranged on the support plate 12 along the second direction (i.e. Figure 1 The second side magnetic steel 5 is arranged on the side extending along the first direction (i.e. Figure 2 In addition, a clamping block 13 is provided on the side of the basin frame body 11 extending along the first direction, and the clamping block 13 is used to clamp the second side magnetic steel 5 in the first direction.

[0056] In this embodiment, in order to increase the bonding area of ​​the first side magnetic steel 2 and thus improve the bonding strength, two retaining walls 3 are provided on the two side edges of the basin frame body 11 extending along the second direction. Figure 4 as well as Figure 5 As shown, the shape of the retaining wall 3 is similar to a rectangular parallelepiped, and the retaining wall 3 extends from the side of the basin frame body 11 and extends into the interior of the basin frame body 11. In the present embodiment, the retaining wall 3 is partially stacked on the support plate 12, and the retaining wall 3 is provided with an inwardly recessed hollow portion 31 on the side close to the first side magnetic steel 2, and the hollow portion 31 includes a first hollow portion and a second hollow portion that are interconnected, and the second hollow portion is located above the first hollow portion, and the cross-section of the first hollow portion in the vertical height direction of the basin frame 1 remains unchanged, and the cross-section of the second hollow portion in the height direction of the basin frame 1 gradually increases in the direction away from the basin frame 1, that is, the size of the hollow portion away from the support plate is larger than the size of the hollow portion close to the support plate. In addition, it should be pointed out that the first side magnetic steel 2 is arranged at a position separated from the retaining wall 3 by a first distance, as shown in FIG. Figure 4 As shown, a first gap is provided between the first side magnetic steel 2 and the retaining wall 3, and the first gap can be used to retain glue to bond the first side magnetic steel 2 and the retaining wall 3. In practical applications, the hollow portion 31 on the retaining wall 3 can be used to retain glue, and by applying glue to the hollow portion 31 on the retaining wall 3 and the first gap between the first side magnetic steel 2 and the retaining wall 3, the first side magnetic steel 2 can be bonded to the retaining wall 3, and further the first side magnetic steel 2 can be bonded to the basin frame 1. Specifically, as shown in FIG. Figure 3As shown, the black area is the glue layer between the first side magnetic steel 2 and the retaining wall 3. In addition, the above-mentioned sound-generating unit is also provided with a yoke 7, which is arranged at the bottom of the central magnetic steel and the side magnetic steel, and the shape of the yoke is a rectangular plate.

[0057] Please refer to Figures 6 to 9 , Embodiment 2 of the present utility model is:

[0058] A sound-emitting unit, the sound-emitting unit comprises a basin frame 1 and a magnetic circuit assembly arranged on the basin frame 1, the shape of the basin frame 1 is similar to a hollow rectangular object, the basin frame 1 comprises a basin frame body 11 and a support plate 12 arranged on the basin frame body 11, and the basin frame body 11 is sleeved on the support plate 12. The magnetic circuit assembly comprises a central magnetic steel, two first side magnetic steels 2 and two second side magnetic steels 5, the central magnetic steel is located in the area surrounded by the first side magnetic steels 2 and the second side magnetic steels 5. The volume of the first side magnetic steel 2 is smaller than that of the second side magnetic steels 5, and the first side magnetic steel 2 is arranged on the side of the support plate 12 extending in the second direction, and the second side magnetic steels 5 are arranged on the side of the support plate 12 extending in the first direction. In addition, clamping blocks 13 are provided at the four corners of the basin frame body 11, and the clamping blocks 13 are used to clamp the second side magnetic steels 5 in the first direction.

[0059] In this embodiment, in order to increase the bonding area of ​​the first side magnetic steel 2 and thus improve the bonding strength, two flanges 4 extending upward are provided on the two side edges of the support plate 12 extending along the second direction, and the flanges 4 are located in the middle of the side edges. Fig. 9 As shown, the basin frame body 11 is provided with fixing blocks 14 at the corresponding positions at both ends of the flange 4, and the flange 4 can be fixed in the second direction through the two fixing blocks 14. It should be noted that, Figure 7 As shown, the flange 4 includes a base and a top that are interconnected, the top is located above the base, the cross section of the base in the direction perpendicular to the height of the basin frame 1 remains unchanged, and the cross section of the top in the direction perpendicular to the height of the basin frame 1 gradually decreases in the direction away from the support plate 12, that is, the size of the flange away from the support plate is smaller than the size of the flange close to the support plate. It should be noted that the first side magnetic steel 2 is arranged at a position separated from the flange 4 by a second distance, that is, there is a second gap between the first side magnetic steel 2 and the flange 4. In actual applications, by applying glue to the second gap between the first side magnetic steel 2 and the flange 4, the first side magnetic steel 2 can be bonded to the retaining wall 3, so as to further bond the first side magnetic steel 2 to the basin frame 1. Specifically, as Figure 6 As shown, the black area is the glue layer between the first side magnetic steel 2 and the flange 4.

[0060] In summary, the sound-emitting unit provided by the utility model has a raised portion on the edge of the first side magnetic steel, and the first side magnetic steel and the raised portion are bonded by glue, thereby increasing the glue bonding area and improving the bonding strength. It should be noted that the raised portion can be designed as a glue retaining wall or flange for glue retention and bonding.

[0061] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sound unit, comprising a basin frame and a magnetic circuit assembly arranged on the basin frame, characterized in that: The magnetic circuit assembly includes two first side magnets arranged in parallel at a certain distance, and the basin frame is provided with two parallel protrusions, which extend upward from the basin frame; wherein, in the first direction of the basin frame, the two first side magnets are located in the middle of the two protrusions, the protrusions are located close to the outer side surfaces of the first side magnets, and the outer side surfaces of the first side magnets are bonded to the adjacent protrusions.

2. The sound generating unit according to claim 1, characterized in that: The basin frame comprises a basin frame body and a support plate, and the support plate is fixed on the basin frame body.

3. The sound generating unit according to claim 2, characterized in that: The raised portion includes a retaining wall, which is arranged on the side of the basin frame body extending along the second direction, and the retaining wall is provided with an inwardly recessed hollow portion on the side surface of the retaining wall close to the first side magnetic steel.

4. The sound generating unit according to claim 3, characterized in that: The hollow portion includes a first hollow portion and a second hollow portion that are interconnected, wherein the cross section of the first hollow portion in a direction perpendicular to the height of the basin frame remains unchanged, and the cross section of the second hollow portion in a direction perpendicular to the height of the basin frame gradually increases in a direction away from the basin frame.

5. The sound generating unit according to claim 4, characterized in that: The first side magnetic steel is disposed on the support plate, and the first side magnetic steel is located at a position spaced a first distance from the retaining wall.

6. The sound generating unit according to claim 2, characterized in that: The raised portion includes a flange, which is arranged on the support plate. The flange includes a base and a top that are connected to each other. The cross-section of the base in the direction perpendicular to the height of the basin frame remains unchanged, and the cross-section of the top in the direction perpendicular to the height of the basin frame gradually decreases in the direction away from the support plate.

7. The sound generating unit according to claim 6, characterized in that: The first side magnetic steel is disposed on the support plate, and the first side magnetic steel is located at a position spaced a second distance from the flange.

8. The sound generating unit according to claim 1, characterized in that: The magnetic circuit assembly also includes a plurality of second side magnetic steels, and the second side magnetic steels are arranged on the side edges of the basin frame extending along the first direction.

9. The sound generating unit according to claim 8, characterized in that: The basin frame is provided with clamping blocks at both ends of the second side magnetic steel.

10. The sound generating unit according to claim 8, characterized in that: The magnetic circuit assembly includes a central magnetic steel, and the central magnetic steel is located in a region surrounded by the first side magnetic steel and the second side magnetic steel.

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