Super-linear bidirectional sound output loudspeaker

Abstract

The utility model discloses a super-linear bidirectional sound output loudspeaker, comprising a first vibration system formed by bonding a first frame body, a first voice coil, a first voice diaphragm and a first FPC soft board, a second vibration system formed by bonding a second frame body, a second voice coil, a second voice diaphragm and a second FPC soft board, and the two vibration systems are bonded and face opposite directions; the first FPC soft board and the second FPC soft board are provided with bonding pad points, the bonding pad points are located above the corresponding voice coil lead wires, the first central magnet, the second central magnet, the first washer and the second washer are connected to the two surfaces of the U iron to form an assembly, and the U iron is connected with the side magnet. The side magnets are connected to the inner sides of the two frame bodies and located on the two sides of the assembly to form a center magnetic circuit system. The beneficial effects of the utility model are that the FPC soft board is directly welded with the voice coil lead, so that the voice coil lead is prevented from being bent, and the power resistance of the loudspeaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker structures, in particular to a super linear two-way sound output loudspeaker. Background Art

[0002] With the innovation of modern technology and the improvement of people's living standards, people have higher and higher requirements for music quality. Traditional one-way speakers have poor sound effects when playing low-frequency music and cannot meet people's pursuit of high-quality low-frequency music sound effects.

[0003] The voice coil input and output wires of the existing two-way sound-output structure are bent and extended from one side of the voice coil and then welded to the frame. When operating at high power, the welding point between the lead and the frame is prone to breakage, causing a short circuit, which makes the speaker unable to sound. The speaker has a low power tolerance and will be damaged when used with a tweeter. Summary of the invention

[0004] The utility model aims to provide an ultra-linear two-way sound-outputting loudspeaker, which directly welds the FPC soft board and the voice coil lead to avoid bending of the voice coil lead and prevent breakage at the welding point between the lead and the frame during high-power operation, thereby improving the power resistance of the loudspeaker.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0006] A superlinear two-way sound-emitting loudspeaker, comprising a first vibration system formed by bonding a first frame, a first voice coil, a first sound membrane and a first FPC soft board, and a second vibration system formed by bonding a second frame, a second voice coil, a second sound membrane and a second FPC soft board, the two vibration systems are bonded to each other and face opposite directions; voice coil soldering pads are formed on the first FPC soft board and the second FPC soft board, and the voice coil soldering pads are located above the corresponding voice coil leads, and also comprises a U iron, a side magnet, a first center magnet, a second center magnet, a first washer and a second washer, the first center magnet and the first washer are connected to the front side of the U iron in sequence, the second center magnet and the second washer are connected to the back side of the U iron in sequence to form an assembly, and the side magnets are connected to the inner sides of the two frames and are located on both sides of the assembly to form a central magnetic circuit system.

[0007] The utility model adopting the above scheme is provided with a first FPC soft board in the first vibration system and a second FPC soft board in the second vibration system. The first FPC soft board and the second FPC soft board are provided with voice coil soldering pads, and the voice coil soldering pads are located above the corresponding voice coil leads, so as to facilitate welding with the voice coil leads through the soldering pads, avoid bending the voice coil, and prevent the welding of the leads and the frame from breaking during high-power operation. The good bending property of the FPC soft board is used to improve the power resistance of the speaker, achieve super linearity, and can be used in conjunction with a tweeter. The two vibration systems are connected in parallel and in opposite directions, effectively offsetting the vibration of the single vibration system itself, and synchronously playing a role in reducing the resonance of the whole machine. The first central magnet and the second washer are connected to the front side of the U iron in sequence, and the second central magnet and the second washer are connected to the back side of the U iron in sequence to form an assembly. The side magnets are connected to the inner sides of the two frames and are located on both sides of the assembly to form a central magnetic circuit system. The structure of the two-way speaker is simplified by coordinating the two vibration systems with one magnetic circuit system.

[0008] Preferably, the U-iron is in the form of a rectangular plate structure as a whole, and ears extending in the length direction are respectively formed at both ends of the rectangular plate, and the ears constitute a connecting portion, which is matched with the first frame and the second frame through the connecting portion.

[0009] In this way, the U iron is positioned by forming ears extending in the length direction at both ends of the U iron, and the ears cooperate with the first frame and the second frame.

[0010] Preferably, the first frame and the second frame have the same structure and are both rectangular frame structures as a whole. The bottoms of the first frame and the second frame that match each other are both formed with mounting grooves, which match with the connecting portion through the mounting grooves.

[0011] In this way, by forming mounting grooves at the bottoms where the first frame and the second frame cooperate, and matching the mounting grooves with the connecting parts of the U iron, the length direction of the U iron is positioned to ensure the positioning effect of the U iron.

[0012] Preferably, the bottoms of the first frame and the second frame that cooperate with each other are formed with protrusions extending in the height direction thereof, the protrusions on the two frames correspond to each other one by one, the protrusions are respectively located on both sides of the side walls of the frames, and the inner sides of the two opposite protrusions cooperate with the U iron.

[0013] In this way, by forming protrusions extending in the height direction at the bottom of the first frame and the second frame, the inner sides between the two protrusions respectively cooperate with the corresponding U irons to position the width direction of the U iron, thereby ensuring the positioning effect of the U iron.

[0014] Preferably, protruding support parts are respectively formed on both sides of the U iron, and the support parts are respectively matched with the inner sides of the two corresponding relative protrusions.

[0015] In this way, by forming the protruding support parts on both sides of the U iron respectively to cooperate with the inner sides between the corresponding two protrusions, the contact area between the U iron and the protrusion is reduced, and interference between other parts of the U iron and the protrusion is prevented.

[0016] Preferably, the first FPC soft board and the second FPC soft board have the same structure, and both FPC soft boards are rectangular plate structures as a whole. The first FPC soft board and the second FPC soft board are both composed of an inner ring and an outer ring connected to each other, and the inner ring and the outer ring are connected by several bent linear structures. The inner rings are respectively connected to the corresponding voice coils, and the outer rings are respectively connected to the corresponding frames.

[0017] In this way, by connecting the first FPC soft board and the second FPC soft board by an inner ring and an outer ring, and connecting the inner ring and the outer ring through several bent linear structures, it is convenient to improve the elasticity of the FPC soft board through the linear structure, the inner ring and the outer ring, further realize the super linear design, and improve the power resistance of the speaker.

[0018] Preferably, corresponding copper foils are respectively embedded on the substrates at both ends of the first FPC soft board and the second FPC soft board, and two disconnected passages are formed through the copper foils, a first soldering pad point and a second soldering pad point are respectively formed on the passage at one end, and a third soldering pad point and a fourth soldering pad point are respectively formed on the other passage, the second soldering pad point is welded to the corresponding voice coil outlet line, and is welded to the corresponding external power supply positive electrode through the first soldering pad point, the fourth soldering pad point is welded to the corresponding voice coil inlet line, and is welded to the corresponding external power supply negative electrode through the third soldering pad point.

[0019] In this way, copper foil is embedded at both ends of the first FPC soft board and the second FPC soft board to form a path, and solder pads are set on the corresponding path to connect with the voice coil or power supply, so that the speaker can be turned on.

[0020] Preferably, avoidance grooves are formed on the first frame body and the second frame body, and the first pad point and the third pad point extend out of the frame body from the corresponding avoidance grooves, respectively.

[0021] In this way, by forming avoidance grooves on both the first frame body and the second frame body for the first soldering pad and the third soldering pad to extend out, it is convenient to connect with an external power source.

[0022] Preferably, weight-reducing holes are formed at both ends of the U iron.

[0023] In this way, under the premise of meeting the required functions of the speaker, the weight of the U iron is reduced, thereby reducing the overall weight of the speaker.

[0024] The beneficial effects of the utility model are as follows: a first FPC soft board is provided in the first vibration system, and a second FPC soft board is provided in the second vibration system, and voice coil soldering pads are formed on the first FPC soft board and the second FPC soft board, and the voice coil soldering pads are located above the corresponding voice coil leads, so as to facilitate welding with the voice coil leads through the soldering pads, avoid bending the voice coil, and prevent the welding of the leads and the frame from breaking during high-power operation, and utilize the good bending property of the FPC soft board to improve the power resistance of the speaker, achieve super linearity, and can be used with a tweeter. The two vibration systems are connected in parallel and in opposite directions, effectively offsetting the vibration of a single vibration system itself, and synchronously playing a role in reducing the resonance of the whole machine. The first central magnet and the second washer are connected to the front side of the U iron in sequence, and the second central magnet and the second washer are connected to the back side of the U iron in sequence to form an assembly, and the side magnets are connected to the inner sides of the two frames and are located on both sides of the assembly to form a central magnetic circuit system, and the structure of the two-way speaker is simplified by coordinating the two vibration systems with one magnetic circuit system. The first center magnet and the second washer are connected to the front of the U iron in sequence, and the second center magnet and the second washer are connected to the back of the U iron in sequence to form an assembly. The side magnets are connected to the inner sides of the two frames and are located on both sides of the assembly to form a center magnetic circuit system. Through a magnetic circuit system and two vibration systems, the structure of the two-way speaker is simplified. The two-way sound output design works with both sides to emit sound at the same time, which increases the effective vibration area by 1 times compared with the one-way sound output, and improves the low-frequency performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded view of the utility model;

[0026] Figure 2 It is a structural diagram of the utility model;

[0027] Figure 3 For this utility model Figure 2 Cross-sectional view of AA in the middle;

[0028] Figure 4 This is a structural diagram of the FPC soft board in the utility model;

[0029] Figure 5 This is a structural diagram of the second frame in the utility model. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described.

[0031] The figure marks in the drawings of the specification include: a first sound diaphragm 1, a first FPC soft board 2, a first voice coil 3, a first washer 4, a first center magnet 5, a first frame 6, a side magnet 7, a U iron 8, a connecting portion 81, a weight reduction hole 82, a supporting portion 83, a second frame 9, a mounting groove 91, a bump 92, a avoidance groove 93, a second center magnet 10, a second washer 11, a second voice coil 12, a second FPC soft board 13, a second sound diaphragm 14, an inner ring 21, an outer ring 211, a first soldering pad 22, a second soldering pad 221, a third soldering pad 23, and a fourth soldering pad 231.

[0032] Embodiment 1, as Figure 1 , Figure 2 and Figure 3 As shown; a super linear two-way sound output speaker, comprising a first frame 6, a first voice coil 3, a first sound membrane 1 and a first FPC soft board 2 bonded together to form a first vibration system, and a second frame 9, a second voice coil 12, a second sound membrane 14 and a second FPC soft board 13 bonded together to form a second vibration system, the two vibration systems are bonded together and face opposite directions; the first FPC soft board 2 and the second FPC soft board 13 are formed with voice coil soldering pads, and the voice coil soldering pads are located above the corresponding voice coil leads, and also include a U iron 8, a side magnet 7, a first center magnet 5, a second center magnet 10, a first washer 4 and a second washer 11, the first center magnet 5 and the first washer 4 are sequentially connected to the front side of the U iron 8, the second center magnet 10 and the second washer 11 are sequentially connected to the back side of the U iron 8 to form an assembly, and the side magnet 7 is connected to the inner side of the two frames and is located on both sides of the assembly to form a central magnetic circuit system. The circuits in the two vibration systems are connected in parallel.

[0033] See also Figure 1 The U iron 8 is a rectangular plate structure as a whole, and ears extending in the length direction are formed at both ends of the rectangular plate, and the ears constitute a connecting portion 81, and the connecting portion 81 is matched with the first frame 6 and the second frame 9. In this way, the U iron 8 is positioned by forming ears extending in the length direction at both ends of the U iron 8, and the ears are matched with the first frame 6 and the second frame 9.

[0034] See also Figures 1 to 3 The first frame 6 and the second frame 9 have the same structure, and are both rectangular frame structures as a whole. The first frame 6 and the second frame 9 are both formed with mounting grooves 91 at the bottoms where they match, and the mounting grooves 91 are matched with the connecting portion 81. In this way, by forming mounting grooves 91 at the bottoms where the first frame 6 and the second frame 9 match, and matching the mounting grooves 91 with the connecting portion 81 of the U iron 8, the length direction of the U iron 8 is positioned, and the positioning effect of the U iron 8 is ensured.

[0035] See also Figures 1 to 3, the bottoms of the first frame 6 and the second frame 9 that match each other are formed with protrusions 92 extending in the height direction thereof, the protrusions 92 on the two frames are in one-to-one correspondence, the protrusions 92 are respectively located on both sides of the side walls of the frame, and the inner sides of the protrusions 92 match the U iron 8. In this way, by forming protrusions 92 extending in the height direction at the bottoms of the first frame 6 and the second frame 9 that match each other, the inner sides between the two protrusions 92 respectively match the corresponding U iron 8, and the width direction of the U iron 8 is positioned, thereby ensuring the positioning effect of the U iron 8.

[0036] See also Figures 1 to 3 , protruding support parts 83 are formed on both sides of the U iron 8, and the support parts 83 are matched with the inner sides of the corresponding protrusions 92. In this way, by forming the protruding support parts 83 on both sides of the U iron 8 and matching with the inner sides between the corresponding two protrusions 92, the contact area between the U iron 8 and the protrusions 92 is reduced, and interference between other parts of the U iron 8 and the protrusions 92 is prevented.

[0037] See also Figure 1 and Figure 4 , the first FPC soft board 2 and the second FPC soft board 13 have the same structure, and both FPC soft boards are rectangular board structures as a whole. The first FPC soft board 2 and the second FPC soft board 13 are both composed of an inner ring 21 and an outer ring 211 connected, and the inner ring 21 and the outer ring 211 are connected through several bent linear structures. The inner ring 21 is respectively connected to the corresponding voice coil, and the outer ring 211 is respectively connected to the corresponding frame. In this way, by connecting the first FPC soft board 2 and the second FPC soft board 13 with the inner ring 21 and the outer ring 211, and connecting the inner ring 21 and the outer ring 211 through several bent linear structures, it is convenient to improve the elasticity of the FPC soft board through the linear structure, the inner ring 21 and the outer ring 211, to achieve super linear design and improve the power resistance of the speaker.

[0038] See also Figure 1 and Figure 4, corresponding copper foils are respectively embedded on the base materials at both ends of the first FPC soft board 2 and the second FPC soft board 13, and two disconnected paths are formed through the copper foils. The first pad point 22 and the second pad point 221 are respectively formed on the path at one end, and the third pad point 23 and the fourth pad point 231 are respectively formed on the other path. The second pad point 221 is welded to the corresponding voice coil outlet line, and the second pad point 221 and the fourth pad point 231 constitute the voice coil pad point, which is welded to the corresponding external power supply positive electrode through the first pad point 22, the fourth pad point 231 is welded to the corresponding voice coil inlet line, and the third pad point 23 is welded to the corresponding external power supply negative electrode. In this way, by embedding the paths formed by copper foils at both ends of the first FPC soft board 2 and the second FPC soft board 13, and setting pad points on the corresponding paths to connect with the voice coil or power supply, it is convenient for the speaker to achieve conduction.

[0039] See also Figure 1 , the first frame 6 and the second frame 9 are both formed with avoidance grooves 93, and the first pad point 22 and the third pad point 23 extend out of the frame from the corresponding avoidance grooves 93. In this way, by forming avoidance grooves 93 on the first frame 6 and the second frame 9 for the first pad point 22 and the third pad point 23 to extend out, it is convenient to connect with an external power supply. Both ends of the U iron 8 are formed with weight reduction holes 82. In this way, under the premise of meeting the required functions of the speaker, the U iron 8 is reduced in weight, thereby reducing the overall weight of the speaker.

[0040] During installation, the side magnet 7 is bonded to the first frame 6; the first sound membrane 1 and the second sound membrane 14 are bonded to the upper ends of the first FPC soft board 2 and the second FPC soft board 13 respectively. The lower ends of the outer ring 211 of the first FPC soft board 2 and the second FPC soft board 13 are bonded to the first frame 6 and the second frame 9 respectively, and the lower ends of the inner ring 21 of the first FPC soft board 2 and the second FPC soft board 13 are bonded to the first voice coil 3 and the second voice coil 12 respectively; the first center magnet 5 and the first washer 4 are bonded to the front side of the U iron 8 in sequence, and the second center magnet 10 and the second washer 11 are bonded to the back side of the U iron 8 in sequence to form a center magnetic circuit assembly; then the center magnetic circuit assembly is bonded to the first frame 6; finally, the second frame 9 is bonded to the first frame 6.

[0041] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An ultra-linear two-way sound speaker, characterized in that: The invention comprises a first vibration system formed by bonding a first frame (6), a first voice coil (3), a first sound membrane (1) and a first FPC soft board (2), and a second vibration system formed by bonding a second frame (9), a second voice coil (12), a second sound membrane (14) and a second FPC soft board (13), wherein the two vibration systems are bonded to each other and face opposite directions; voice coil soldering pads are formed on the first FPC soft board (2) and the second FPC soft board (13), and the voice coil soldering pads are located above the corresponding voice coil leads; the invention also comprises a U iron (8), a side magnet (7), a first center magnet (5), a second center magnet (10), a first washer (4) and a second washer (11), wherein the first center magnet (5) and the first washer (4) are connected in sequence to the front side of the U iron (8), and the second center magnet (10) and the second washer (11) are connected in sequence to the back side of the U iron (8) to form an assembly; the side magnet (7) is connected to the inner sides of the two frames and is located on both sides of the assembly to form a central magnetic circuit system.

2. The ultra-linear two-way sound speaker according to claim 1, characterized in that: The U iron (8) is in the form of a rectangular plate structure as a whole. Both ends of the rectangular plate are respectively formed with ears extending in the length direction. The ears constitute a connecting portion (81) and are matched with the first frame body (6) and the second frame body (9) through the connecting portion (81).

3. The ultra-linear two-way sound speaker according to claim 2, characterized in that: The first frame (6) and the second frame (9) have the same structure and are both rectangular frame structures as a whole. The matching bottoms of the first frame (6) and the second frame (9) are both formed with mounting grooves (91), which are matched with the connecting portion (81) through the mounting grooves (91).

4. The ultra-linear two-way sound speaker according to claim 1, characterized in that: The bottoms of the first frame (6) and the second frame (9) are matched with each other and are formed with protrusions (92) extending in the height direction thereof. The protrusions (92) on the two frames correspond to each other one by one. The protrusions (92) are respectively located on both sides of the side walls of the frames, and the inner sides of the two opposite protrusions (92) match with the U iron (8).

5. The ultra-linear two-way sound speaker according to claim 4, characterized in that: Protruding support portions (83) are respectively formed on both sides of the U iron (8), and the support portions (83) respectively cooperate with the inner sides of the two corresponding opposite protrusions (92).

6. The ultra-linear two-way sound speaker according to claim 1, characterized in that: The first FPC soft board (2) and the second FPC soft board (13) are both rectangular board structures as a whole. The first FPC soft board (2) and the second FPC soft board (13) are both composed of an inner ring (21) and an outer ring (211) connected to each other. The inner ring (21) and the outer ring (211) are connected via a plurality of bent linear structures. The inner ring (21) is respectively connected to a corresponding voice coil, and the outer ring (211) is respectively connected to a corresponding frame.

7. The ultra-linear two-way sound speaker according to claim 6, characterized in that: Copper foils are respectively embedded on the base materials at both ends of the first FPC soft board (2) and the second FPC soft board (13), and two disconnected passages are formed through the copper foils. A first soldering pad (22) and a second soldering pad (221) are respectively formed on the passage at one end, and a third soldering pad (23) and a fourth soldering pad (231) are respectively formed on the other passage. The second soldering pad (221) and the fourth soldering pad (231) constitute the voice coil soldering pad. The second soldering pad (221) is welded to the corresponding voice coil outlet line and welded to the corresponding external power positive electrode through the first soldering pad (22). The fourth soldering pad (231) is welded to the corresponding voice coil inlet line and welded to the corresponding external power negative electrode through the third soldering pad (23).

8. The ultra-linear two-way sound speaker according to claim 7, characterized in that: The first frame (6) and the second frame (9) are both formed with avoidance grooves (93), and the first welding pad point (22) and the third welding pad point (23) extend out of the frame from the corresponding avoidance grooves (93).

9. The super linear two-way sound speaker according to any one of claims 1 to 8, characterized in that: Both ends of the U iron (8) are formed with weight-reducing holes (82).

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