Loudspeaker accessory and loudspeaker
By injection molding the front panel of the speaker and the frame into one piece, the problems of magnetic circuit unit detachment and complex riveting are solved, resulting in a more robust connection and a more efficient production process.
Patent Information
- Application Number
- CN202423155617.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In existing loudspeakers, the way the magnetic circuit unit is fixed to the frame can easily lead to breakage or detachment of the joint, and the riveting process is complicated, increasing production costs.
The front panel and the basin frame are injection molded as one piece. The front panel is embedded into the basin frame through an insert injection molding process to form a firm bond and avoid the front panel being installed backwards during the injection molding process.
It improves the bonding strength between the front panel and the frame, simplifies the manufacturing process, reduces production costs, avoids product scrap, and improves production efficiency.
Smart Images
Figure CN223553462U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a speaker accessory and a speaker. Background Technology
[0002] The magnetic circuit unit is a crucial component of a loudspeaker, providing a magnetic field to drive the voice coil and other vibrating systems, thus achieving electroacoustic conversion. The magnetic circuit unit is typically mounted on the speaker frame. Typical mounting methods include gluing the magnetic circuit unit to the frame or riveting it to the frame. These traditional methods have the following drawbacks: Since the components of the magnetic circuit system are all metal or alloy parts, when the magnetic circuit system is heavy, the glued or riveted areas experience significant stress, leading to potential cracking at the joints or the magnetic circuit unit detaching from the frame after a period of use. Riveting requires high dimensional accuracy at the riveted joints, increasing the cost of the front panel; it adds a riveting process, requiring additional riveting equipment and increasing production costs; and stress concentration in the riveted areas of the frame can easily cause frame breakage. Especially for magnetic circuit units with external magnetic structures, the front panel is usually glued or riveted to the bottom of the basin frame. These external magnetic circuit units include T-iron and are used with larger magnets. The overall size and weight are large, which can easily cause the basin frame to break or the front panel to fall off the basin frame.
[0003] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0004] One objective of this invention is to provide a speaker accessory in which the front panel and the speaker frame are injection molded as a single unit, resulting in a more secure connection and effectively preventing the front panel from being installed backwards during the injection molding process. Another objective of this invention is to provide a speaker in which the connection between the front panel and the frame is more robust.
[0005] The present invention adopts the following technical solution:
[0006] A loudspeaker accessory includes a speaker frame and a magnetic circuit unit. The magnetic circuit unit includes a front panel embedded in the frame. The front panel and the frame are integral. The front panel has an outer edge, which includes a protrusion and notches located on the upper and lower sides of the protrusion. The notches on both sides are symmetrical about the protrusion. The protrusion is embedded in a groove in the frame, and a portion of the frame is located in the notches on both sides.
[0007] In a preferred embodiment, the front piece is encased in the basin frame via an insert injection molding process.
[0008] In a preferred embodiment, the basin frame surrounds the front panel, and the receiving groove is an annular groove.
[0009] In a preferred embodiment, the front piece has opposite upper and lower surfaces, and the distance between the upper surface of the protrusion and the upper surface of the front piece is equal to the distance between the lower surface of the protrusion and the lower surface of the front piece.
[0010] In a more preferred embodiment, the upper and lower portions of the front piece are symmetrical about a central plane.
[0011] In a more preferred embodiment, the front piece has an upper stepped surface surrounding its upper surface, the upper stepped surface being located between the upper surface of the front piece and the upper surface of the protrusion; the front piece has a lower stepped surface surrounding its lower surface, the lower stepped surface being located between the lower surface of the front piece and the lower surface of the protrusion.
[0012] In a preferred embodiment, the magnetic circuit unit includes a magnet, the front sheet is stacked on the magnet, and the outer diameter of the front sheet is smaller than the outer diameter of the magnet.
[0013] In a more preferred embodiment, the magnetic circuit unit includes a T-iron, the T-iron including a base and a cylindrical portion, the magnet being stacked on the base, the front plate being stacked on the magnet, and the cylindrical portion passing through the middle of the magnet and the front plate.
[0014] In a preferred embodiment, the basin stand has an open lower end, on which the front panel is fitted.
[0015] This utility model also adopts the following technical solution:
[0016] A loudspeaker includes a cone and a voice coil, the loudspeaker further including the loudspeaker accessories, the cone being connected to the frame, one end of the voice coil being connected to the cone, and the other end being movably inserted into the magnetic gap of the magnetic circuit unit, the cone having a cone-shaped truncated cone.
[0017] The present invention adopts the above solution and has the following advantages compared with the prior art:
[0018] This invention integrates the front panel and speaker frame into a single injection-molded unit, resulting in a robust bond and effectively preventing the front panel from being installed backwards during the injection molding process. The secure connection between the front panel and frame reduces the likelihood of the magnetic circuit unit detaching. The manufacturing process is simple, eliminating the need for error-proofing checks and improving production efficiency. Furthermore, during insert injection molding, the front panel is guaranteed to be installed correctly, preventing product scrap due to reversed installation, thus further enhancing production efficiency and reducing costs. Attached Figure Description
[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a cross-sectional view of a speaker accessory according to an embodiment of the present utility model.
[0021] Figure 2 for Figure 1 Top view of the front panel.
[0022] Figure 3 for Figure 2 Sectional view along the AA direction.
[0023] Figure 4 This is an exploded view of a loudspeaker according to an embodiment of the present invention.
[0024] Figure 5 This is a top view of a loudspeaker according to an embodiment of the present invention.
[0025] Figure 6 for Figure 5 Sectional view along the BB direction.
[0026] In the above attached figures,
[0027] 1. Sink stand; 10. Lower end; 11. Container;
[0028] 2. Magnetic circuit unit; 21. Front piece; 211. Protrusion; 212. Notch; 213. Upper stepped surface; 214. Lower stepped surface; 22. Magnet; 23. T-iron;
[0029] 3. Sound basin;
[0030] 4. Voice coil;
[0031] 5. Positioning support;
[0032] 6. Dust cap. Detailed Implementation
[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0034] In this article, "inner" and "outer" are defined with reference to the speaker, with the position closer to the speaker considered "inner" and vice versa. The directional terms "upper," "lower," and "horizontal" are intended to help those skilled in the art understand the structure of the mid-bass speaker and are not used to limit the state of the mid-bass speaker after it is installed in the usage scenario. For example, the mid-bass speaker can be installed on a horizontal, inclined, or vertical surface of a vehicle.
[0035] Figures 1 to 6 The diagrams are drawn to scale. To keep the instructions concise, the proportions of each component are not listed individually. However, the proportions and positions of each component should be considered part of the contents of this instruction manual.
[0036] Reference Figures 1 to 3 As shown, this embodiment provides a loudspeaker accessory, particularly an accessory for a midrange or low-frequency loudspeaker. The loudspeaker accessory includes a speaker frame 1 and a magnetic circuit unit 2. The speaker frame 1 is a single piece of plastic, and the magnetic circuit unit 2 is fixed to the speaker frame 1. The magnetic circuit unit 2 includes a front panel 21, which is embedded in the speaker frame 1, and the front panel 21 and the speaker frame 1 are integral. The front panel 21 has an outer edge, which includes a protrusion 211 and notches 212 located on the upper and lower sides of the protrusion 211. The notches 212 on both sides are symmetrical about the protrusion 211. The protrusion 211 is embedded in a groove 11 of the speaker frame 1, and a portion of the speaker frame 1 is located in the notches 212 on both sides.
[0037] Combination Figures 4 to 6 As shown, in this embodiment, the front piece 21 is encased in the basin frame 1 through an insert injection molding process. When the basin frame 1 is injection molded, the front piece 21 is first placed into the injection mold as an insert, and then the mold is closed and the basin frame 1 material (such as PP plastic) is injected. The plastic wraps around the outer edge of the front piece 21, so that the front piece 21 is embedded in the molded basin frame 1.
[0038] The basin frame 1 surrounds the front piece 21, and the receiving groove 11 is an annular groove. Specifically, the front piece 21 is an annular component with a through hole in the middle, and its annular outer edge is embedded in the basin frame 1. The basin frame 1 has an open lower end, on which the front piece 21 is fitted. The upper and lower surfaces of the front piece 21 are exposed relative to the basin frame 1.
[0039] Specifically, the front piece 21 has opposite upper and lower surfaces, and the distance between the upper surface of the protrusion 211 and the upper surface of the front piece 21 is equal to the distance between the lower surface of the protrusion 211 and the lower surface of the front piece 21. The upper and lower parts of the front piece 21 are symmetrical about a central plane P, and the two parts of the front piece 21 are completely mirror-symmetrical about the central plane P. Furthermore, the upper and lower surfaces of the front piece 21 are parallel to the central plane P, and the distance between the upper surface of the front piece 21 and the central plane P is equal to the distance between the lower surface of the front piece 21 and the central plane P.
[0040] Furthermore, the front piece 21 has an upper stepped surface 213 surrounding its upper surface, which is located between the upper surface of the front piece 21 and the upper surface of the protrusion 211, thereby forming another shallow groove at the upper stepped surface 213, and the aforementioned notch 212 is located around the periphery of this groove. The front piece 21 also has a lower stepped surface 214 surrounding its lower surface, which is located between the lower surface of the front piece 21 and the lower surface of the protrusion 211, thereby forming another shallow groove at the lower stepped surface 214, and the aforementioned notch 212 is located around the periphery of this groove.
[0041] Magnetic circuit unit 2 includes a magnet 22, with a front piece 21 stacked on top of the magnet 22. The outer diameter of the front piece 21 is smaller than the outer diameter of the magnet 22. The upper surface of the magnet 22 is fixed to the lower surface of the front piece 21, for example, by adhesive bonding. This magnetic circuit unit 2 employs an external magnetic mechanism, including a T-iron 23, which includes a base and a cylindrical portion. The magnet 22 is stacked on the base of the T-iron 23, and the front piece 21 is stacked on top of the magnet 22. Both the front piece 21 and the magnet 22 are annular pieces with a central opening. The cylindrical portion of the T-iron 23 passes through the center of both the magnet 22 and the front piece 21. The T-iron 23 and the front piece 21 are made of metal or alloy. The magnet 22 is selected from permanent magnets, such as alloy permanent magnet materials, including rare-earth permanent magnet materials; or ferrite permanent magnet materials.
[0042] Figures 4 to 6 An example of using Figures 1 to 3 The speaker of magnetic circuit unit 2. (Refer to...) Figures 4 to 6 As shown, the loudspeaker includes a cone 3, a voice coil 4, and the aforementioned loudspeaker accessories. The cone 3 is connected to the frame 1, and one end of the voice coil 4 is connected to the cone 3, while the other end is movably inserted into the magnetic gap of the magnetic circuit unit 2. The cone 3 has a truncated cone shape, and the voice coil 4 is connected to the bottom end of the cone and sealed by a dust cap 6. The area of the top end of the cone is larger than the area of the bottom end, and it is suspended from the upper end of the frame 1 by an elastic folding ring. The loudspeaker also includes a positioning support 5 fitted onto the voice coil 4, and the outer edge of the positioning support 5 is fixed to the frame 1. The positioning support 5 has a corrugated body that allows the voice coil 4 to vibrate.
[0043] In this embodiment, the front panel 21 and the speaker frame 1 are injection molded as a single unit, resulting in a strong bond and effectively preventing the front panel 21 from being installed backwards during injection molding. The strong bond between the front panel 21 and the frame 1 reduces the likelihood of the magnetic circuit unit 2 detaching; the manufacturing process is simple, eliminating the need for error-proofing checks and improving production efficiency; during insert injection molding, the front panel 21 will not be installed incorrectly, preventing product scrap due to reversed placement, thus improving production efficiency and reducing production costs. Specifically, it effectively avoids the following problems: misplacement of the front panel 21 during production damages the mold and reduces production efficiency; or the need for additional error-proofing checks during injection molding, which reduces production efficiency and increases production costs. In this embodiment, the front panel 21 has a symmetrical structure with the same concave dimension on both sides, which facilitates fixing the position of the front panel 21 during injection molding, eliminating the need for additional error-proofing mechanisms and thus improving production efficiency.
[0044] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.
[0045] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar.
[0046] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.
[0047] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and they cannot be used to limit the protection scope of this utility model.
Claims
1. A loudspeaker accessory comprising a loudspeaker frame and a magnetic circuit unit, the magnetic circuit unit comprising a front panel, characterized in that, The front panel is embedded in the basin stand, and the front panel and the basin stand are integral. The front panel has an outer edge, which includes a protrusion and notches located on the upper and lower sides of the protrusion. The notches on both sides are symmetrical about the protrusion. The protrusion is embedded in the receiving groove of the basin stand, and part of the basin stand is located in the notches on both sides.
2. The speaker accessory according to claim 1, characterized in that, The front piece is encased in the basin frame using an insert injection molding process.
3. The speaker accessory according to claim 1 or 2, characterized in that, The basin frame surrounds the front panel, and the receiving groove is an annular groove.
4. The speaker accessory according to claim 1 or 2, characterized in that, The front piece has opposite upper and lower surfaces, and the distance between the upper surface of the protrusion and the upper surface of the front piece is equal to the distance between the lower surface of the protrusion and the lower surface of the front piece.
5. The speaker accessory according to claim 4, characterized in that, The upper and lower parts of the front piece are symmetrical about a central plane.
6. The speaker accessory according to claim 5, characterized in that, The front piece has an upper stepped surface surrounding its upper surface, the upper stepped surface being located between the upper surface of the front piece and the upper surface of the protrusion; the front piece has a lower stepped surface surrounding its lower surface, the lower stepped surface being located between the lower surface of the front piece and the lower surface of the protrusion.
7. The speaker accessory according to claim 1 or 2, characterized in that, The magnetic circuit unit includes a magnet, and the front sheet is stacked on the magnet, with the outer diameter of the front sheet being smaller than the outer diameter of the magnet.
8. The speaker accessory according to claim 7, characterized in that, The magnetic circuit unit includes a T-iron, which includes a base and a cylindrical portion. The magnet is stacked on the base, and the front piece is stacked on the magnet. The cylindrical portion passes through the middle of the magnet and the front piece.
9. The speaker accessory according to claim 1 or 2, characterized in that, The basin stand has an open lower end, on which the front panel is fitted.
10. A loudspeaker, comprising a cone and a voice coil, characterized in that, The loudspeaker further includes a loudspeaker accessory as described in any one of claims 1 to 9, wherein the cone is connected to the frame, one end of the voice coil is connected to the cone, and the other end is movably inserted into the magnetic gap of the magnetic circuit unit, and the cone has a cone-shaped truncated cone.