Loudspeaker base frame structure and forming tool

Abstract

The utility model relates to the field of loudspeakers, in particular to a loudspeaker base frame structure and a forming tool, the loudspeaker base frame structure comprises a frame body and side magnets, the middle part of the frame body is provided with an accommodating channel, the frame body is provided with placing grooves at two sides of the accommodating channel, one side of each placing groove is provided with a communication opening, and the communication opening is communicated with the accommodating channel; a stopping block protruding outwards is arranged on the side wall of the containing groove, the side face, away from the containing channel, of the stopping block is a stopping side face, and the stopping side face is parallel to the opening direction of the communicating opening; the side parts of the edge magnets are provided with blocking gaps corresponding to the blocking blocks one by one, the blocking blocks are embedded in the blocking gaps, and the blocking blocks block the edge magnets, thereby preventing the edge magnets from approaching each other due to the influence of a magnetic field, and preventing the normal work of the voice coil from being affected. And meanwhile, the extending direction of the blocking side face is parallel to the opening direction of the communicating opening, the edge magnet is blocked in the direction perpendicular to the movement path of the edge magnet, and the limiting effect on the edge magnet is improved.

Description

Technical Field

[0001] This utility model relates to the field of loudspeakers, specifically to a loudspeaker base structure and molding tooling. Background Technology

[0002] A loudspeaker is a device that converts electrical signals into sound signals, widely used in various audio devices such as stereos, televisions, mobile phones, and computers. Its working principle is based on electromagnetic induction. When current passes through the loudspeaker's coil, it experiences a force in the magnetic field. This force causes the coil to vibrate the diaphragm, thus converting electrical energy into mechanical energy and producing sound. Loudspeaker performance parameters include frequency response, sensitivity, and impedance, which determine the loudspeaker's sound quality. Frequency response refers to the range of sound frequencies the loudspeaker can reproduce, sensitivity reflects the loudspeaker's ability to respond to input power, and impedance is related to the matching degree between the loudspeaker and the amplifier.

[0003] Structurally, a loudspeaker typically consists of a magnetic circuit system, a resonant system, and a frame system. The magnetic circuit system includes permanent magnets and magnetic conductors, which provide the magnetic field for the coil. The resonant system includes the cone and voice coil, responsible for converting electrical energy into sound. The frame system supports and limits these components. However, existing frames have relatively weak limiting forces on the lateral magnets, which can easily cause the lateral magnets to attract each other under the influence of the magnetic field and shift their positions, affecting the voice coil's operation. Furthermore, due to the small size of the lateral magnets, the structure that cooperates with the frame's limiting structure during molding needs to achieve high dimensional accuracy, resulting in high production costs. Utility Model Content

[0004] The purpose of this invention is to provide a loudspeaker and a molding fixture, which aims to improve the existing base frame's relatively small limiting force on the side magnets, which easily leads to the side magnets attracting each other under the action of a magnetic field and causing positional displacement, affecting the operation of the voice coil; and because the side magnets are small in size, the structure that cooperates with the base frame limiting structure during the molding process needs to achieve high dimensional accuracy, resulting in high production costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A loudspeaker frame structure includes a frame and a side magnet. The frame has a receiving channel in the middle, and the frame has placement slots on both sides of the receiving channel. One side of each placement slot has a connecting opening that communicates with the receiving channel. The side wall of each placement slot has an outwardly protruding blocking block. The side of the blocking block away from the receiving channel is a blocking side, and the blocking side is parallel to the opening direction of the connecting opening.

[0007] The side of the edge magnet is provided with a blocking notch that corresponds to the blocking block, and the blocking block is embedded in the blocking notch.

[0008] Furthermore, the blocking block is located at the end of the sidewall near the connecting opening.

[0009] Furthermore, the top surface of the frame is provided with multiple outwardly protruding mounting posts.

[0010] Furthermore, the frame is provided with an integrally injection-molded edge magnetic washer, which is located directly above the edge magnet.

[0011] Furthermore, the frame is provided with at least one limiting protrusion, the limiting protrusion extends toward the side magnet washer, the side magnet washer is provided with a limiting notch corresponding to the limiting protrusion, and the limiting protrusion is embedded in the limiting notch.

[0012] Furthermore, the two ends of the edge magnet are provided with outwardly protruding inclined portions, which are in the shape of an "eight" and inclined outward. The frame body is provided with inclined grooves that correspond one-to-one with the inclined portions, and the inclined portions are inserted into the inclined grooves.

[0013] Furthermore, the side of the edge magnet is provided with an outwardly protruding insert, the insert being located on the side of the limiting notch, and the frame is provided with slots corresponding to the inserts, the inserts being inserted into the slots.

[0014] Furthermore, the frame is provided with a support step, and the top edge of the side magnet is provided with a support notch, and the support step rests against the support notch;

[0015] The top of the supporting step is provided with an outwardly extending limiting arm, which is fitted to the plate surface of the edge magnet washer.

[0016] To achieve the above objectives, the present invention also adopts the following technical solution:

[0017] A molding tooling includes a magnetizing component, a positioning component, and an ejection component;

[0018] The positioning component is provided with a positioning groove, the speaker base structure is placed in the positioning groove, and the positioning groove is provided with an outlet channel;

[0019] The bottom surface of the ejector component is connected to the drive end of the external first lifting drive mechanism. The external first drive mechanism drives the ejector component to reciprocate toward the positioning component. The ejector component is provided with an ejector arm, which corresponds to the position of the ejector channel.

[0020] The top of the magnetizing component is connected to the drive end of the external second lifting drive mechanism. The external second drive mechanism drives the magnetizing component to reciprocate toward the positioning component. The magnetizing component is provided with a magnetizing arm, which corresponds to the position of the side magnet.

[0021] Furthermore, at least one positioning protrusion is provided within the positioning groove. The positioning protrusion is perpendicular to the side magnet, and the length of the positioning protrusion is equal to the width of the receiving channel.

[0022] The top edge of the positioning protrusion is provided with an inclined annular surface, and the inner side of the inclined annular surface has a top surface that is inclined outward to the side.

[0023] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0024] 1. The channel is used to install accessories such as voice coils. The side magnets are placed in the placement slot, and the blocking block in the placement slot blocks the side magnets to prevent them from being affected by the magnetic field and getting close to each other, which would affect the normal operation of the voice coil. At the same time, the side extension direction of the blocking block is parallel to the opening direction of the connecting opening, blocking the side magnets in the direction perpendicular to the movement path of the side magnets and improving the limiting effect of the side magnets.

[0025] 2. During the production of the edge magnet, it is only necessary to ensure the opening depth of the blocking notch, which ensures that the edge magnet does not protrude from the placement slot. There is no need to calibrate parameters such as curvature and slope, which effectively reduces the difficulty of production. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the speaker frame structure described in this utility model;

[0027] Figure 2 This is a partial structural diagram of the speaker frame structure described in this utility model;

[0028] Figure 3 This is a front view of the speaker frame structure described in this utility model;

[0029] Figure 4 This is a first cross-sectional view of the speaker frame structure described in this utility model;

[0030] Figure 5 This is a second cross-sectional view of the speaker frame structure described in this utility model;

[0031] Figure 6 This is a schematic diagram of the first structure of the side magnet washer of the speaker frame structure described in this utility model;

[0032] Figure 7 This is a schematic diagram of the second structure of the side magnet washer of the speaker frame structure described in this utility model;

[0033] Figure 8 This is a schematic diagram of the side magnet structure of the speaker frame structure described in this utility model;

[0034] Figure 9 This is an exploded structural diagram of the molding tooling structure described in this utility model;

[0035] Figure 10 This is an enlarged schematic diagram of part A of the molding tooling structure described in this utility model;

[0036] Figure 11 This is a schematic diagram of the cross-sectional structure of the molding tooling structure of the present invention in its magnetized state;

[0037] Figure 12 This is a schematic diagram of the ejection state structure of the molding tooling structure described in this utility model;

[0038] Figure 13 This is a schematic cross-sectional view of the molding tooling structure in the ejected state of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Frame; 11. Receiving channel; 12. Placement slot; 121. Connecting opening; 122. Blocking block; 1221. Blocking side; 13. Mounting post; 14. Mounting slot; 15. Side magnetic washer; 151. Limiting notch; 152. Insert block; 153. Inclined part; 154. Support notch; 16. Limiting protrusion; 17. Slot; 18. Angled slot; 19. Supporting step part; 191. Limiting arm;

[0041] 2. Edge magnetism; 21. Blocking gap;

[0042] 3. Magnetizing components; 31. Magnetizing arm;

[0043] 4. Positioning component; 41. Positioning groove; 411. Positioning protrusion; 4111. Inclined annular surface; 412. Yielding surface; 413. Ejection channel;

[0044] 5. Ejector component; 51. Ejector plate. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0046] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0048] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Example

[0050] Please refer to Figure 1-8 As shown, this embodiment provides a loudspeaker frame structure, including a frame 1 and a side magnet 2. A receiving channel 11 is provided in the middle of the frame 1. Placement slots 12 are formed on both sides of the receiving channel 11 on the frame 1. A connecting opening 121 is formed on one side of the placement slot 12, and the connecting opening 121 communicates with the receiving channel 11. An outwardly protruding blocking block 122 is provided on the side wall of the placement slot 12. The side of the blocking block 122 away from the receiving channel 11 is a blocking side 1221, and the opening direction of the blocking side 1221 is parallel to the opening direction of the connecting opening 121. Please refer to... Figure 8 As shown, the side of the side magnet 2 is provided with a blocking notch 21 corresponding to the blocking block 122, and the blocking block 122 is embedded in the blocking notch 21.

[0051] The channel 11 accommodates the installation of accessories such as voice coils. The side magnet 2 is placed in the placement slot 12, and the blocking block 122 in the placement slot 12 blocks the side magnet 2 to prevent the side magnets 2 from being affected by the magnetic field and getting close to each other, thus affecting the normal operation of the voice coil. At the same time, the direction of the extension of the blocking side 1221 is parallel to the opening direction of the connecting opening 121, which blocks the side magnet 2 in the direction perpendicular to the movement path of the side magnet 2, thereby improving the limiting effect of the side magnet 2.

[0052] Meanwhile, during the production of the side magnet 2, it is only necessary to ensure the opening depth of the blocking notch 21, which ensures that the side magnet 2 does not protrude from the placement slot 12. There is no need to calibrate parameters such as curvature and slope, which effectively reduces the difficulty of production.

[0053] Please refer to Figure 2 As shown, in this embodiment, the blocking block 122 is located at the end of the side wall near the connecting opening 121, which further reduces the molding difficulty of the side magnet 2 and improves the production qualification rate.

[0054] Please refer to Figure 3 As shown, the top surface of the frame 1 has multiple outwardly protruding mounting posts 13. In this embodiment, the top surface of the frame 1 is rectangular, and four mounting posts 13 are provided on the top surface of the frame 1. The four mounting posts 13 are located at the four corners of the top surface of the frame 1, which facilitates the installation of the frame 1 onto other components and reduces assembly difficulty. Similarly, the frame 1 can also be triangular, circular, or polygonal.

[0055] Please refer to Figure 2-7 As shown, in this embodiment, a mounting groove 14 is provided on the bottom surface of the frame 1, and the mounting groove 14 is located below the placement groove 12. The mounting groove 14 is for placing and installing the magnetic cover to form a magnetic circuit, and seals the bottom surface of the frame 1, limiting the side magnet 2 from below, further ensuring the stability of the side magnet 2 during operation.

[0056] Furthermore, a one-piece injection-molded edge magnet washer 15 is installed on the frame 1, located directly above the edge magnet 2. The edge magnet washer 15 is connected to the frame 1 by one-piece injection molding, effectively reducing assembly steps and improving production efficiency. At the same time, the edge magnet washer 15, located at the top, limits the movement of the edge magnet 2, further ensuring the stability of the edge magnet 2 during operation.

[0057] Furthermore, the frame 1 is provided with at least one limiting protrusion 16, which extends toward the side magnet washer 15. The side magnet washer 15 is provided with limiting notches 151 corresponding to the limiting protrusions 16, and the limiting protrusions 16 are embedded in the limiting notches 151. In this embodiment, there are two limiting protrusions 16 and two limiting notches 151. The limiting notches 151 extend along the length of the side magnet washer 15, limiting the side magnet washer 15 from both sides along the length, effectively ensuring the stability of the side magnet washer 15. Similarly, a wider limiting protrusion 16 can be provided, or three or more limiting protrusions 16 can be provided to limit the side magnet washer 15.

[0058] Furthermore, the side of the edge magnetic washer 15 is provided with an outwardly protruding insert 152, which is located on the side of the limiting notch 151. The frame 1 has slots 17 that correspond one-to-one with the insert 152, and the insert 152 is inserted into the slot 17. The insert 152 cooperates with the slot 17, the limiting notch 151, and the limiting protrusion 16 to further improve the stability of the connection between the edge magnetic washer 15 and the frame 1.

[0059] Furthermore, the two ends of the side magnetic washer 15 are provided with outwardly protruding inclined portions 153, which are inclined outward in a "V" shape. The frame 1 has inclined grooves 18 that correspond one-to-one with the inclined portions 153, and the inclined portions 153 are inserted into the inclined grooves 18. The inclined grooves 18 limit the inclined portions 153 of the side magnetic washer 15, and the inclined portions 153 effectively improve the connection strength between the side magnetic washer 15 and the frame 1.

[0060] Furthermore, a support step 19 is provided on the frame 1, and a support notch 154 is provided on the top edge of the side magnetic washer 15. The support step 19 abuts against the support notch 154, and the support step 19 supports the side of the side magnetic washer 15. A limiting arm 191 extending outward is provided at the top of the support step 19, and the limiting arm 191 is fitted against the plate surface of the side magnetic washer 15. The limiting arm 191 extends outward and limits the side magnetic washer 15 from above, ensuring the stability of the contact between the side magnetic washer 15 and the side magnet 2.

[0061] Please refer to Figure 9-13 As shown, this embodiment also provides a molding fixture, including a magnetizing component 3, a positioning component 4, and an ejector component 5; the positioning component 4 is provided with a positioning groove 41, and the aforementioned speaker base structure is placed in the positioning groove 41. The positioning groove 41 supports and positions the speaker base structure, ensuring the accuracy of the speaker base structure's position during the production and processing process.

[0062] Please refer to Figure 9 and Figure 10 As shown, furthermore, at least one positioning protrusion 411 is provided in the positioning groove 41. The positioning protrusion 411 is perpendicular to the side magnet 2, and the length of the positioning protrusion 411 is equal to the width of the receiving channel 11. In this embodiment, there are two positioning protrusions 411, which are arranged at intervals along the length direction of the side magnet 2. By controlling the length of the positioning protrusion 411 to be equal to the width of the receiving channel 11, during the process of driving the frame 1 to descend and be placed in the positioning groove 41, the positioning protrusion 411 is located in the receiving channel 11, and the positioning protrusion 411 is used to determine whether the position of the side magnet 2 meets the standard. If the side magnet 2 protrudes from the placement groove 12 due to size issues, it will collide with the positioning protrusion 411, affecting the placement of the frame 1. Combining the placement process with the detection process further improves the overall production efficiency.

[0063] In this embodiment, the top edge of the positioning protrusion 411 is provided with an inclined annular surface 4111, and the inner side of the inclined annular surface 4111 has a top surface that is inclined outward to the side. The inclined annular surface 4111 makes way for the side magnetic washer 15, so that the positioning protrusion 411 can enter the receiving channel 11 more smoothly to detect the position of the side magnetic 2.

[0064] Furthermore, the groove opening of the positioning groove 41 is provided with a relief surface 412, which provides relief to the periphery of the frame 1, making it easier for the frame 1 to enter the positioning groove 41.

[0065] Please refer to Figure 11 As shown, the top of the magnetizing component 3 is connected to the drive end of the external second lifting drive mechanism, which drives the magnetizing component 3 to reciprocate toward the positioning component 4. A magnetizing arm 31 is provided on the magnetizing component 3, and the magnetizing arm 31 corresponds to the position of the side magnet 2. The external second drive mechanism drives the magnetizing arm 31 downwards, and the magnetizing arm 31 abuts against the side magnet 2, magnetizing the side magnet 2.

[0066] Please refer to Figure 12 and Figure 13 As shown, an ejection channel 413 is provided in the positioning groove 41; the bottom surface of the ejection component 5 is connected to the drive end of the external first lifting drive mechanism, which drives the ejection component 5 to reciprocate toward the positioning component 4. An ejection arm is provided on the ejection component 5, and the ejection arm is positioned corresponding to the ejection channel 413. The external first drive mechanism drives the ejection arm to move upward, pass through the ejection channel 413, and eject the speaker base structure in the positioning groove 41.

[0067] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A loudspeaker frame structure, characterized in that, The device includes a frame and side magnets. The frame has a receiving channel in the middle and placement slots on both sides of the receiving channel. One side of each placement slot has a connecting opening that connects to the receiving channel. The side wall of each placement slot has an outwardly protruding blocking block. The side of the blocking block away from the receiving channel is a blocking side, and the blocking side is parallel to the opening direction of the connecting opening. The side of the edge magnet is provided with a blocking notch that corresponds to the blocking block, and the blocking block is embedded in the blocking notch.

2. The loudspeaker frame structure according to claim 1, characterized in that: The blocking block is located at the end of the side wall near the connecting opening.

3. The loudspeaker frame structure according to claim 1, characterized in that: The top surface of the frame is provided with multiple outwardly protruding mounting columns.

4. The loudspeaker frame structure according to claim 1, characterized in that: The frame is equipped with an integrally injection-molded edge magnetic washer, which is located directly above the edge magnet.

5. The loudspeaker frame structure according to claim 4, characterized in that: The frame is provided with at least one limiting protrusion, which extends toward the side magnet washer. The side magnet washer is provided with a limiting notch that corresponds to the limiting protrusion, and the limiting protrusion is embedded in the limiting notch.

6. The loudspeaker frame structure according to claim 4, characterized in that: The two ends of the side magnetic washer are provided with outwardly protruding inclined parts, which are in the shape of an "eight" and tilt outward. The frame body is provided with inclined slots that correspond one-to-one with the inclined parts, and the inclined parts are inserted into the inclined slots.

7. The loudspeaker frame structure according to claim 5, characterized in that: The side of the edge magnetic washer is provided with an outwardly protruding insert block, which is located on the side of the limiting notch. The frame is provided with slots that correspond one-to-one with the insert blocks, and the insert blocks are inserted into the slots.

8. The loudspeaker frame structure according to claim 4, characterized in that: The frame is provided with a support step, and the top edge of the side magnet is provided with a support notch, and the support step abuts against the support notch; The top of the supporting step is provided with an outwardly extending limiting arm, which is fitted to the plate surface of the edge magnet washer.

9. A forming tooling, characterized in that, Includes magnetizing components, positioning components, and ejection components; The positioning component is provided with a positioning groove, and the speaker base structure of any one of claims 1-8 is placed in the positioning groove, and the positioning groove is provided with an outlet channel. The bottom surface of the ejector component is connected to the drive end of the external first lifting drive mechanism. The external first drive mechanism drives the ejector component to reciprocate toward the positioning component. The ejector component is provided with an ejector arm, which corresponds to the position of the ejector channel. The top of the magnetizing component is connected to the drive end of the external second lifting drive mechanism. The external second drive mechanism drives the magnetizing component to reciprocate toward the positioning component. The magnetizing component is provided with a magnetizing arm, which corresponds to the position of the side magnet.

10. The molding tooling according to claim 9, characterized in that, At least one positioning protrusion is provided within the positioning groove. The positioning protrusion is perpendicular to the side magnet, and the length of the positioning protrusion is equal to the width of the receiving channel. The top edge of the positioning protrusion is provided with an inclined annular surface, and the inner side of the inclined annular surface has a top surface that is inclined outward to the side.

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