A differential electromagnetic receiver drive assembly and its assembly tool and assembly method

Abstract

The present invention relates to the field of loudspeaker technology, and in particular to a differential electromagnetic receiver drive assembly and its assembly tooling and assembly method. During the assembly process of the drive assembly, the gap between the dynamic suction plate and the pole shoe is required to be very high. During the assembly process, the gap must be adjusted and the front and rear sound cavities and sound damping must be configured to adjust the audio characteristics. In this application, a gap plate is prefabricated according to the design requirements of the gap and fixed on the clamp seat. The gap plate is used to assist the assembly of the drive assembly to ensure that the gaps between the left and right poles are uniform and free of debris. A differential electromagnetic receiver drive assembly and its assembly tooling and assembly method are specifically disclosed. By adding a gap adjustment tooling to assist the assembly during the installation of the drive assembly, the dynamic suction plate and the pole shoe in the receiver are arranged in parallel, so that the gaps between the left and right levels are the same and free of debris, and the product requirements are met; the sound pressure of the swing-pivot differential electromagnetic receiver product is improved, the pure sound is improved, the impedance is stable, and the product consistency is stable.

Description

Technical Field

[0001] The invention relates to the technical field of loudspeakers, and in particular to a differential electromagnetic receiver driving component and an assembly tool and an assembly method thereof. Background Art

[0002] The differential electromagnetic receiver is a high-performance receiver with high sensitivity, wide frequency response and clear pronunciation. It is divided into two types: swing differential type and reed differential type. Among them, when the voice current of the swing differential electromagnetic receiver is zero, there is only the magnetic flux generated by the permanent magnet in the pole shoes and the dynamic suction plate, the gap between the two pole shoes and the dynamic suction plate is equal, the magnetic resistance is equal, the two ends of the dynamic suction plate corresponding to the two pole shoes are attracted equally, and the vibration membrane is in a static state.

[0003] During the assembly process of the pivot differential electromagnetic receiver, it is necessary to ensure that the gap between the two pole shoes and the dynamic suction plate meets the design standards and is equal. The current method of adjusting the gap during the assembly process is to use a small pointed stick, insert it between the pole shoe and the dynamic suction plate, and rely on human eyes and feelings to adjust the assembly gap, resulting in the gap size not meeting the standard, resulting in poor product consistency and low yield. In addition, the vibration rod is set at one end of the dynamic suction plate and has a certain weight. It only relies on manual adjustment, which makes it more difficult to balance the size of the gaps at the two places. Summary of the invention

[0004] The invention provides a differential electromagnetic receiver driving component and an assembly tool and an assembly method thereof, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A differential electromagnetic receiver driving assembly comprises: a fixing seat, a dynamic suction piece, and a pole shoe, wherein the dynamic suction piece and the pole shoe are respectively mounted on the fixing seat in sequence through a first support ear and a second support ear;

[0007] The pole shoe is configured as a U-shaped structure, including a horizontal portion and two vertical portions arranged in parallel, a permanent magnet is arranged in the middle of the horizontal portion, and coils are arranged on the two vertical portions corresponding to the permanent magnets;

[0008] The dynamic suction piece includes a positioning part and vibration parts on both sides thereof, the permanent magnet and the vertical part are respectively arranged corresponding to the positioning part and the vibration part, and the two vertical parts and the two vibration parts are arranged with equal gaps;

[0009] The fixing seat is configured as an annular structure, including a mounting hole, a wiring hole and a positioning ring groove, the first support ear and the second support ear are both fixed to the mounting hole by bolts, and the positioning ring groove is located on a side of the fixing seat away from the dynamic suction plate.

[0010] Furthermore, the mounting hole, the first ear and the second ear are symmetrically arranged in two, the first ear is arranged at an angle of 90° with the vibration part, and a vibration rod is arranged on the side of the vibration part facing the fixing seat.

[0011] Furthermore, the fixing seat is located at the mounting hole and is protruded toward the dynamic suction piece;

[0012] A positioning block is arranged at the axis center of the positioning portion corresponding to the permanent magnet.

[0013] Furthermore, a nut countersunk hole is provided in the positioning ring groove corresponding to the mounting hole.

[0014] An assembly tool, used for installing the above-mentioned differential electromagnetic receiver drive assembly, including a limit seat and an adjustment assembly and a pressing assembly arranged correspondingly thereto;

[0015] The limit seat is arranged corresponding to the positioning ring groove on the fixing seat, and a limit hole is provided on the limit seat corresponding to the mounting hole. The adjustment assembly includes guide rails arranged on both sides of the limit seat and clamp seats slidably connected thereto, and the two clamp seats symmetrically arranged on the two guide rails are used to fix the two ends of the gap sheet;

[0016] The pressing assembly comprises a bracket, a cylinder and a pressing plate arranged thereon, wherein the cylinder is arranged vertically and drives the pressing plate to approach or move away from the limiting seat.

[0017] Furthermore, clamping seats are provided at both ends of the guide rail, and the clamping seats are slidably connected to the guide rail via a slider;

[0018] A stopper is provided at a middle position of the guide rail corresponding to the limit hole on the limit seat.

[0019] An assembly method, using the above-mentioned assembly tool, comprises the following steps:

[0020] Cooperate with the limiting assembly to position the fixing seat on the limiting assembly, and then use the limiting assembly to place the moving suction piece and the pole shoe on the fixing seat in sequence;

[0021] Install the gap pieces of the same specification on the clamping seats at both ends of the guide rail, and then move the gap pieces on both sides to the gap between the two vertical parts and the two vibrating parts;

[0022] The cylinder drives the pressing plate to press toward the pole shoe, so that the gap sheet is pressed tightly against the vertical parts and the vibrating parts on both sides thereof;

[0023] Remove part of the limit assembly, and fix the first support ear and the second support ear to the fixing seat by bolts;

[0024] After sliding and removing the gap pieces on both sides, take out the differential electromagnetic receiver drive assembly.

[0025] Furthermore, the limiting assembly includes a limiting column and a fixing nut. The limiting column is first inserted into the limiting hole of the limiting seat, and the fixing nut is sleeved on the outer ring of the limiting column;

[0026] During the positioning process of the fixing seat, the mounting hole is passed through the limiting column, and the nut countersunk hole on the fixing seat is engaged with the fixing nut;

[0027] The first support ear and the second support ear are sequentially sleeved on the limiting column through the through holes thereon.

[0028] Furthermore, after the gap sheet is pressed against the vertical part and the vibrating part by driving the pressure plate through the cylinder, the limiting column is removed, and then the bolt is passed through the second ear, the second ear through hole and the mounting hole in sequence, and the bolt is tightened and fixed with the fixing nut;

[0029] Finally, the pressure plate is driven away from the pole shoe by the cylinder, and then the gap sheet between the vertical part and the vibrating part is moved out.

[0030] Furthermore, the limiting seat is configured as a truncated cone structure corresponding to the positioning ring groove.

[0031] The beneficial effects of the present invention are:

[0032] During the assembly process of the drive component, the gap between the dynamic suction plate and the pole shoe is required to be very high. During the assembly process, the gap must be adjusted and the front and rear sound cavities and sound damping must be configured to adjust the audio characteristics. The present invention discloses a differential electromagnetic receiver drive component and its assembly tooling and assembly method. By adding a gap adjustment tooling to assist in the assembly during the installation of the drive component, the dynamic suction plate and the pole shoe in the receiver are arranged in parallel, and the left and right gaps are the same and free of debris, thereby meeting the product requirements. The sound pressure of the swing-pivot differential electromagnetic receiver product is improved, the pure sound is improved, the impedance is stable, and the product consistency is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of a differential electromagnetic receiver driving assembly in the present invention;

[0035] Figure 2 It is a schematic diagram of the exploded structure of the driving assembly in the present invention;

[0036] Figure 3 It is a schematic diagram of the structure of the fixing seat in the present invention;

[0037] Figure 4 It is a structural schematic diagram of the assembly tooling in the present invention;

[0038] Figure 5 It is a schematic diagram of the structure of the limit seat and the adjustment component in the present invention;

[0039] Figure 6 It is a structural schematic diagram of the regulating component in the present invention;

[0040] Figure 7 It is a schematic diagram of the fixed seat in the present invention being positioned on the limiting seat;

[0041] Figure 8 This is a schematic diagram of the present invention after the dynamic suction sheet is installed;

[0042] Fig. 9 It is a schematic diagram of adjusting the gap between the vertical part and the vibration part by using the gap sheet in the present invention;

[0043] Fig.10 It is a schematic diagram of the compression of the lower pressing component in the present invention.

[0044] 1. The fixing seat; 11. The mounting hole; 12. The wiring hole; 13. The positioning ring groove; 131. The nut countersunk hole; 2. The dynamic suction plate; 21. The first ear; 22. The positioning part; 23. The positioning block; 24. The vibration part; 241. The vibration rod; 3. The pole shoe; 31. The second ear; 32. The horizontal part; 33. The vertical part; 34. The permanent magnet; 35. The coil; 4. The limit seat; 41. The limit hole; 5. The adjustment component; 51. The guide rail; 52. The clamp seat; 53. The gap piece; 54. The slider; 55. The stop block; 6. The pressing component; 61. The bracket; 62. The cylinder; 63. The pressure plate; 7. The limit assembly; 71. The limit column; 72. The fixing nut. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0048] The present invention discloses a differential electromagnetic receiver drive component and its assembly tool and assembly method. By adding a gap adjustment tool to assist in assembly during the installation of the drive component, a dynamic suction plate and a pole shoe in the receiver are arranged in parallel, and the left and right gaps are the same and free of debris, thereby meeting the product requirements; the sound pressure of the swing-pivot differential electromagnetic receiver product is improved, the pure sound is improved, the impedance is stable, and the product consistency is stable.

[0049] like Figures 1 to 3 The differential electromagnetic receiver driving assembly shown in the figure specifically relates to a pivot differential electromagnetic receiver in the differential electromagnetic receiver, comprising a fixed seat 1, a dynamic suction piece 2, and a pole shoe 3, wherein the dynamic suction piece 2 and the pole shoe 3 are sequentially mounted on the fixed seat 1 through a first ear 21 and a second ear 31 respectively; the pole shoe 3 is set as a U-shaped structure, comprising a horizontal portion 32 and two vertical portions 33 arranged in parallel, a permanent magnet 34 is arranged in the middle of the horizontal portion 32, and two vertical portions 33 are arranged corresponding to the permanent magnet 34. Coil 35; the dynamic suction piece 2 includes a positioning portion 22 and vibrating portions 24 on both sides thereof, the permanent magnet 34 and the vertical portion 33 are respectively arranged corresponding to the positioning portion 22 and the vibrating portion 24, and the two vertical portions 33 and the two vibrating portions 24 are arranged with equal gaps; the fixing seat 1 is arranged as an annular structure, including a mounting hole 11, a wiring hole 12 and a positioning ring groove 13, the first support ear 21 and the second support ear 31 are both fixed at the mounting hole 11 by bolts, and the positioning ring groove 13 is located on the side of the fixing seat 1 away from the dynamic suction piece 2.

[0050] There are two mounting holes 11 , two first ears 21 and two second ears 31 symmetrically arranged. The first ear 21 and the vibration part 24 are arranged at an angle of 90°. A vibration rod 241 is arranged on the side of the vibration part 24 facing the fixing base 1 .

[0051] Specifically, in the normal state of the receiver, only the magnetic flux φ1 generated by the permanent magnet 34 exists in the pole shoe 3 and the dynamic suction piece 2, the gap d1=d2 between the two vertical parts 33 in the pole shoe 3 and the two vibrating parts 24 on the dynamic suction piece 2, the magnetic resistance is equal, and the two vibrating parts 24 on both sides of the dynamic suction piece 2 are equally attracted, and the vibration membrane is in a static state at this time; when the voice current passes through the coil 35, an alternating magnetic flux φ2 is generated, which interacts with the original magnetic flux φ1. The present application includes two symmetrically arranged coils 35, so that the magnetic flux generated by the voice current passing through the two coils 35 is in opposite directions, and the magnetic flux direction on the vertical part 33 at one end is the same as the magnetic flux φ1, so that the magnetic force at this location is strengthened, and the magnetic flux direction on the vertical part 33 at the other end is opposite to the magnetic flux φ1, so that the magnetic force at this location is weakened; finally, the two vibrating parts 24 in the dynamic suction piece 2 are alternately attracted, and finally the vibration membrane is driven to vibrate through the vibration rod 241.

[0052] like Figure 2 As shown, the fixing seat 1 is located at the mounting hole 11 and is protruded toward the dynamic suction plate 2; a positioning block 23 is provided at the axis of the positioning portion 22 corresponding to the permanent magnet 34. Figure 3 As shown, a nut counterbore 131 is provided in the positioning ring groove 13 corresponding to the mounting hole 11 .

[0053] The protrusion at the mounting hole 11 is provided with a first ear 21 for fixing the dynamic suction piece 2, so that the first ear 21 does not affect the amplitude of the dynamic suction piece 2 after being connected to the fixing seat 1, and the reciprocating vibration resistance is reduced, making it easier to drive. The nut countersunk hole 131 is used to place bolts and nuts, and the dynamic suction piece 2 and the pole shoe 3 are fixedly connected to the fixing seat 1 through bolts and nuts.

[0054] like Figures 4 to 10 An assembly tool shown is used to install the above-mentioned differential electromagnetic receiver drive component, including a limit seat 4 and an adjustment component 5 and a pressing component 6 arranged accordingly; the limit seat 4 is arranged corresponding to the positioning ring groove 13 on the fixing seat 1, and a limit hole 41 is opened on the limit seat 4 corresponding to the mounting hole 11, the adjustment component 5 includes a guide rail 51 arranged on both sides of the limit seat 4 and a clamp seat 52 slidably connected thereto, and two clamp seats 52 symmetrically arranged on the two guide rails 51 are used to fix the two ends of the gap piece 53; the pressing component 6 includes a bracket 61 and a cylinder 62 and a pressure plate 63 arranged thereon, and the cylinder 62 is vertically arranged and drives the pressure plate 63 to move closer to or away from the limit seat 4.

[0055] During the assembly of the drive assembly, the gap between the dynamic suction plate 2 and the pole shoe 3 is required to be very high. During the assembly process, the gap must be adjusted and the front and rear sound cavities and sound damping must be configured to adjust the audio characteristics.

[0056] In the present application, a gap sheet 53 is prefabricated according to the design requirements of the gap and fixed on the clamp seat 52, and the gap sheet 53 is used to assist the assembly of the drive assembly to ensure that the gap between the left and right poles is uniform and free of debris.

[0057] Furthermore, clamping seats 52 are provided at both ends of the guide rail 51 , and the clamping seats 52 are slidably connected to the guide rail 51 through sliders 54 ; a stopper 55 is provided at the middle position of the guide rail 51 corresponding to the limiting hole 41 on the limiting seat 4 .

[0058] An assembly method, using the above-mentioned assembly tool and used for assembling the differential electromagnetic receiver drive assembly disclosed in the present application, comprises the following steps:

[0059] Cooperate with the limiting component 7 to position the fixing seat 1 on the limiting seat 4, and then use the limiting component 7 to place the dynamic suction plate 2 and the pole shoe 3 on the fixing seat 1 in sequence; install the gap pieces 53 of the same specification on the clamping seats 52 at both ends of the guide rail 51 respectively, and then move the gap pieces 53 on both sides to the gap between the two vertical parts 33 and the two vibrating parts 24; drive the pressure plate 63 toward the pole shoe 3 through the cylinder 62 to press the gap piece 53 against the vertical parts 33 and the vibrating parts 24 on both sides; remove part of the limiting component 7, and fix the first support ear 21 and the second support ear 31 to the fixing seat 1 by bolts; after sliding and removing the gap pieces 53 on both sides, take out the differential electromagnetic receiver drive assembly.

[0060] Among them, the gap piece 53 can be moved into position before the pole shoe 3 is installed. First, the two gap pieces 53 on both sides of the guide rail 51 are moved to the top of the two vibrating parts 24 of the dynamic suction piece 2 respectively, and then the pole shoe 3 is installed and aligned and positioned; the dynamic suction piece 2 and the horizontal part 32 of the pole shoe 3 are kept horizontal by controlling the cylinder 62 to press downward, and the gaps on both sides between the two vertical parts 33 of the pole shoe 3 and the dynamic suction piece 2 are uniform; after tightening the bolts, the control cylinder 62 drives the pressure plate 63 away from the pole shoe 3, removes the gap piece 53, and takes out the product.

[0061] like Figure 6 As shown, the limiting assembly 7 includes a limiting column 71 and a fixing nut 72. The limiting column 71 is first inserted into the limiting hole 41 of the limiting seat 4, and the fixing nut 72 is sleeved on the outer ring of the limiting column 71; during the positioning process of the fixing seat 1, the mounting hole 11 passes through the limiting column 71, and the nut countersunk hole 131 on the fixing seat 1 is engaged with the fixing nut 72; the first ear 21 and the second ear 31 are sequentially sleeved on the limiting column 71 through the through holes thereon.

[0062] Specifically, the limit seat 4 and the corresponding positioning ring groove 13 are arranged as a frustum structure, which is convenient for the limit clamping of the fixed seat 1. A limit hole 41 is opened on the limit seat 4 corresponding to the mounting hole 11 on the fixed seat 1. The positioning of the fixed seat 1 and its pre-assembly with the dynamic suction plate 2 and the pole shoe 3 are realized by the limit column 71 inserted in the limit hole 41 in the limit assembly 7. The limit column 71 can also position the fixing nut 72. The fixing seat 1 is firmly positioned by the fixing nut 72. After the limit column 71 is removed, it is convenient to use bolts to directly fix the pole shoe 3 and the dynamic suction plate 2 to the fixed seat 1.

[0063] Furthermore, after the pressure plate 63 is driven by the cylinder 62 to press the gap piece 53 against the vertical part 33 and the vibration part 24, the limit column 71 is removed, and the bolts are passed through the second ear 31, the through hole of the second ear 31 and the mounting hole 11 in sequence, and the bolts are tightened and fixed with the fixing nut 72; finally, the pressure plate 63 is driven by the cylinder 62 to move away from the pole shoe 3, and then the gap piece 53 between the vertical part 33 and the vibration part 24 is moved out.

[0064] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A differential electromagnetic receiver driving assembly, characterized in that: include: A fixed seat, a dynamic suction plate, and a pole shoe, wherein the dynamic suction plate and the pole shoe are respectively mounted on the fixed seat in sequence through a first support ear and a second support ear; The pole shoe is configured as a U-shaped structure, including a horizontal portion and two vertical portions arranged in parallel, a permanent magnet is arranged in the middle of the horizontal portion, and coils are arranged on the two vertical portions corresponding to the permanent magnets; The dynamic suction piece includes a positioning part and vibration parts on both sides thereof, the permanent magnet and the vertical part are respectively arranged corresponding to the positioning part and the vibration part, and the two vertical parts and the two vibration parts are arranged with equal gaps; The fixing seat is configured as an annular structure, including a mounting hole, a wiring hole and a positioning ring groove, the first support ear and the second support ear are both fixed to the mounting hole by bolts, and the positioning ring groove is located on a side of the fixing seat away from the dynamic suction plate; The mounting hole, the first lug and the second lug are symmetrically arranged in two, the first lug is arranged at an angle of 90° with the vibration part, and a vibration rod is arranged on the side of the vibration part facing the fixing seat; The fixing seat is located at the mounting hole and protrudes toward the dynamic suction piece; A positioning block is arranged at the axis center of the positioning portion corresponding to the permanent magnet.

2. The differential electromagnetic receiver driving assembly according to claim 1, characterized in that: A nut countersunk hole is provided in the positioning ring groove corresponding to the mounting hole.

3. An assembly tool for installing the differential electromagnetic receiver drive assembly as described in claim 2, characterized in that: It includes a limit seat and an adjustment component and a pressing component corresponding to the limit seat; The limit seat is arranged corresponding to the positioning ring groove on the fixing seat, and a limit hole is provided on the limit seat corresponding to the mounting hole. The adjustment assembly includes guide rails arranged on both sides of the limit seat and clamp seats slidably connected thereto, and the two clamp seats symmetrically arranged on the two guide rails are used to fix the two ends of the gap sheet; The pressing assembly comprises a bracket, a cylinder and a pressing plate arranged thereon, wherein the cylinder is arranged vertically and drives the pressing plate to approach or move away from the limiting seat.

4. The assembly tool according to claim 3, characterized in that: Clamping seats are provided at both ends of the guide rail, and the clamping seats are slidably connected to the guide rail via a slider; A stopper is provided at a middle position of the guide rail corresponding to the limit hole on the limit seat.

5. An assembly method, using the assembly tool as described in claim 4, characterized in that: The following steps are involved: Cooperate with the limiting assembly to position the fixing seat on the limiting assembly, and then use the limiting assembly to place the moving suction piece and the pole shoe on the fixing seat in sequence; Install the gap pieces of the same specification on the clamping seats at both ends of the guide rail, and then move the gap pieces on both sides to the gap between the two vertical parts and the two vibrating parts; The cylinder drives the pressing plate to press toward the pole shoe, so that the gap sheet is pressed tightly against the vertical parts and the vibrating parts on both sides thereof; Remove part of the limit assembly, and fix the first support ear and the second support ear to the fixing seat by bolts; After sliding and removing the gap pieces on both sides, take out the differential electromagnetic receiver drive assembly.

6. The assembly method according to claim 5, characterized in that: The limiting assembly includes a limiting column and a fixing nut. The limiting column is first inserted into the limiting hole of the limiting seat, and the fixing nut is sleeved on the outer ring of the limiting column; During the positioning process of the fixing seat, the mounting hole is passed through the limiting column, and the nut countersunk hole on the fixing seat is engaged with the fixing nut; The first support ear and the second support ear are sequentially sleeved on the limiting column through the through holes thereon.

7. The assembly method according to claim 6, characterized in that: After the cylinder drives the pressing plate to press the gap sheet, the vertical part and the vibrating part, the limiting column is removed, and then the bolts are passed through the second ear and the first ear through hole and the mounting hole in sequence, and the bolts are tightened and fixed with the fixing nuts; Finally, the pressure plate is driven away from the pole shoe by the cylinder, and then the gap sheet between the vertical part and the vibrating part is moved out.

8. The assembly method according to claim 6, characterized in that: The limiting seat is configured as a truncated cone structure corresponding to the positioning ring groove.

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