Sonar and assembling method thereof

Abstract

The invention discloses a sonar and an assembling method thereof, the sonar comprises a watertight terminal, an electronic part and a housing part, the housing part comprises an electronic cabin and a top cover, the electronic part is accommodated in an accommodating cavity of the electronic cabin, the watertight terminal is arranged in the electronic cabin and is connected to the electronic part, and the top cover is arranged on the watertight terminal. The top cover comprises a fixed cover, a front placing plate and a vulcanized rubber layer, the top of the front placing plate extends to the top of the fixed cover through a rod body through hole of the fixed cover, the vulcanized rubber layer is vulcanized at the top of the fixed cover and wraps the top of the front placing plate, the front placing plate is connected to the electronic part, and the electronic part is connected to the front placing plate. The fixing cover is installed on the electronic cabin and seals the cavity opening of the containing cavity.

Description

Technical Field

[0001] The invention relates to the technical field of underwater detection, and in particular to a sonar and an assembly method thereof. Background Art

[0002] Sonar is a core component for underwater detection, and it has a wide range of uses in the fields of military, ocean detection, industry and civilian workers. In the Chinese invention patent application with application announcement number CN117930248A, the inventor disclosed a sonar, whose electronic part includes a plurality of circuit boards including a main control board, a transmitting board and a receiving board, and the opposite ends of these circuit boards are respectively inserted into the card slots of the electronic cabin to accommodate these circuit boards in the accommodating cavity of the electronic cabin, and the adjacent circuit boards are connected by flying wires. The specific structure of the existing sonar causes the following problems: first, multiple circuit boards are concentrated in the accommodating cavity of the electronic cabin, resulting in concentrated heat sources, which is not conducive to the rapid heat dissipation of the sonar; secondly, multiple circuit boards are accommodated in the accommodating cavity of the electronic cabin at intervals from each other, and the electronic cabin needs to provide a sufficiently large accommodating cavity, resulting in a large overall size of the sonar, which is not conducive to the miniaturization and lightweight of the sonar; thirdly, since the overall size of the sonar should be reduced as much as possible, the accommodating cavity of the electronic cabin is relatively narrow, and the method of connecting adjacent circuit boards by flying wire technology in a narrow space is difficult to operate, which is not conducive to the mass production of sonar. Summary of the invention

[0003] One object of the present invention is to provide a sonar and an assembly method thereof, wherein a chip for signal reception and processing of the sonar is mounted on the front amplifier board. In this way, on the one hand, the sonar can reduce the number of circuit boards and is conducive to the miniaturization and lightweight of the sonar. On the other hand, the heat source of the sonar is dispersed, which is conducive to the heat dissipation of the sonar.

[0004] One object of the present invention is to provide a sonar and an assembly method thereof, wherein the chip of the front amplifier board is attached to the heat sink of the fixed cover. In this way, the heat generated by the chip of the front amplifier board during operation can be quickly conducted to the fixed cover through the heat sink and dissipated through the fixed cover, thereby greatly improving the heat dissipation capacity of the sonar.

[0005] An object of the present invention is to provide a sonar and an assembly method thereof, wherein the main control board and the transmitting board of the electronic part do not need to be connected by flying wires, but are connected by conductive connectors, which is conducive to improving the assembly efficiency of the sonar.

[0006] One object of the present invention is to provide a sonar and an assembly method thereof, wherein a main control board and a transmitting board of the electronic part can be installed on a bracket between being accommodated in a receiving cavity of the electronic cabin, and the main control board and the transmitting board can be accommodated in the receiving cavity of the electronic cabin by locking the bracket to the fixed cover. In this way, during the assembly of the sonar, there is no need to connect the main control board and the transmitting board in a narrow space, so as to facilitate the operation.

[0007] One object of the present invention is to provide a sonar and an assembly method thereof, wherein after the bracket is locked in the electronic cabin, the bracket and the inner wall of the electronic cabin are in surface contact with each other, and the heat generated by the main control board and the transmitting board during operation can be directly conducted to the bracket, and then directly conducted to the electronic cabin through the bracket for heat dissipation, thereby greatly improving the heat dissipation capacity of the sonar.

[0008] According to one aspect of the present invention, the present invention provides a sonar, comprising: Watertight terminals; Electronics; and A cover part, wherein the cover part includes an electronic compartment and a top cover, wherein the electronic compartment has a receiving cavity, the electronic part is received in the receiving cavity of the electronic compartment, the watertight terminal is arranged in the electronic compartment, and the watertight terminal is connected to the electronic part, wherein the top cover includes a fixed cover, a front plate and a vulcanized rubber layer, the fixed cover has a cover body perforation and a heat sink extending downward from the edge of the cover body perforation, the top of the front plate extends to the top of the fixed cover through the cover body perforation of the fixed cover, the chip of the front plate is attached to the heat sink of the fixed cover, the vulcanized rubber layer is vulcanized on the top of the fixed cover, and the vulcanized rubber layer wraps the top of the front plate, wherein the fixed cover is installed on the electronic compartment in a manner of closing the cavity opening of the receiving cavity, and the front plate is connected to the electronic part.

[0009] According to an embodiment of the present invention, the electronic part includes a main control board and a transmitting board connected to the main control board, and the front amplifier board and the watertight terminal are respectively connected to the main control board.

[0010] According to one embodiment of the present invention, the electronic part includes a filter board, the watertight terminal is connected to the filter board, and the filter board is connected to the main control board, so that the watertight terminal is connected to the main control board through the filter board.

[0011] According to one embodiment of the present invention, the filter plate has a plate through hole, the extension direction of the filter plate is perpendicular to the extension direction of the watertight terminal, and the part of the watertight terminal located in the accommodating cavity of the electronic compartment passes through the plate through hole of the filter plate.

[0012] According to an embodiment of the present invention, the sonar includes a flexible flat cable, one end of the flexible flat cable is connected to the main control board, and the other end is connected to the front amplifier board.

[0013] According to an embodiment of the present invention, the flexible flat cable is in an "S" shape when viewed from a side angle.

[0014] According to one embodiment of the present invention, the sonar includes a bracket, the main control board and the transmitting board are arranged on the bracket at intervals from each other, and the bracket is locked to the fixed cover, so that the main control board and the transmitting board are accommodated in the accommodating cavity of the electronic cabin by the bracket.

[0015] According to another aspect of the present invention, the present invention provides a method for assembling a sonar, wherein the assembling method comprises the following steps: (a) allowing the top of the front amplifier board to extend from the bottom of the fixed cover to the top through the cover hole of the fixed cover, wherein the chip of the front amplifier board is attached to the heat sink of the fixed cover extending downward from the edge of the cover hole; (b) vulcanizing the vulcanized rubber layer on the top of the fixed cover in a manner that the vulcanized rubber layer wraps the top of the front plate to obtain a top cover of the housing portion; (c) placing a main control board and a transmitting board of the electronic part on the fixed cover respectively, and conductively connecting the main control board and the front amplifier board, conductively connecting the transmitting board and the front amplifier board, and conductively connecting the main control board and the transmitting board; and (d) When the fixing cover is installed on the electronic compartment, the main control board and the transmitting board are allowed to be accommodated in the accommodation cavity of the electronic compartment.

[0016] According to one embodiment of the present invention, the step (c) further comprises the steps of: (c.1) mounting the main control board and the transmitting board on a bracket of the sonar in a manner that the main control board and the transmitting board are spaced apart from each other; (c.2) locking the bracket to the fixed cover; and (c.3) Connect the front amplifier board and the main control board via flexible flat cables respectively.

[0017] According to one embodiment of the present invention, in the above method, the step (c.3) is performed before the step (c.2), so that the front amplifier board and the main control board are first connected through the flexible flat cable, and the front amplifier board and the transmitting board are connected, and then the bracket is locked to the fixed cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic schematic diagram of a sonar according to a preferred embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of a first perspective of the sonar according to the above preferred embodiment of the present invention.

[0020] Figure 3 1 is a schematic diagram of a second perspective of the sonar according to the preferred embodiment of the present invention.

[0021] Figure 4 It is a cross-sectional schematic diagram of the first position of the sonar according to the above preferred embodiment of the present invention.

[0022] Figure 5 It is a cross-sectional schematic diagram of the second position of the sonar according to the above preferred embodiment of the present invention.

[0023] Figure 6 It is a cross-sectional schematic diagram of the third position of the sonar according to the above preferred embodiment of the present invention.

[0024] Figure 7 It is a cross-sectional schematic diagram of the fourth position of the sonar according to the above preferred embodiment of the present invention.

[0025] Figure 8 It is a three-dimensional schematic diagram of a top cover of a modified example of the sonar according to the above preferred embodiment of the present invention.

[0026] Fig. 9 It is a schematic diagram of a first perspective of the top cover of the sonar of the preferred embodiment of the present invention.

[0027] Fig.10 It is a schematic diagram of an exploded view from a second perspective of the top cover of the above preferred embodiment of the sonar according to the above preferred embodiment of the present invention.

[0028] Fig.11 It is a schematic cross-sectional view of a local position of the top cover of the sonar according to the preferred embodiment of the present invention. DETAILED DESCRIPTION

[0029] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The present invention can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0030] Furthermore, on the first aspect, in the disclosure of the present invention, the orientations or positional relationships indicated by terms such as “longitudinal”, “transverse”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term “one” should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term “one” cannot be understood as a limitation on the quantity.

[0031] With reference to the accompanying drawings of the present invention Figures 1 to 7 A sonar according to a preferred embodiment of the present invention will be disclosed and explained in the following description, wherein the sonar includes a housing portion 10, a watertight terminal 20 and an electronic portion 30.

[0032] Specifically, the housing portion 10 includes an electronic compartment 11 and a top cover 12, wherein the electronic compartment 11 has a receiving cavity 111, the watertight terminal 20 is arranged in the electronic compartment 11, the electronic part 30 is received in the receiving cavity 111 of the electronic compartment 11, and the electronic part 30 is connected to the watertight terminal 20, wherein the top cover 12 includes a fixed cover 121, at least one front plate 122 and a vulcanized rubber layer 123, the fixed cover 121 has at least one cover body through hole 1211 and at least one heat sink extending downward from the edge of the cover body through hole 1211 1212, the top of the front amplifier board 122 extends to the top of the fixed cover 121 through the cover body through hole 1211 of the fixed cover 121, the front amplifier board chip 1221 of the front amplifier board 122 is attached to the heat sink 1212 of the fixed cover 121, the vulcanized rubber layer 123 is vulcanized on the top of the fixed cover 121, and the vulcanized rubber layer 123 wraps the top of the front amplifier board 122, wherein the fixed cover 121 is installed on the electronic cabin 11 in a manner of closing the cavity opening of the accommodating cavity 111, and the front amplifier board 122 is connected to the electronic part 30.

[0033] In this specific example of the sonar of the present invention, the front amplifier board chip 1221 of the front amplifier board 122 is a chip for signal reception and processing. In other words, the chip of the receiving board of the sonar of the prior art is mounted on the front amplifier board 122 to form the front amplifier board chip 1221, so that the front amplifier board chip 1221 and the heat sink 1212 of the fixed cover 121 can be at the same height position, so that the front amplifier board chip 1221 and the fixed cover 121 can fit together, and the heat generated by the front amplifier board chip 1221 of the front amplifier board 122 during operation can be directly conducted to the fixed cover 121, and dissipated through the fixed cover 121, so as to greatly improve the heat dissipation efficiency of the sonar.

[0034] It can be understood that the peripheral wall of the fixed cover 121 is directly exposed and has a large area. Since the front amplifier board chip 1221 of the front amplifier board 122 is attached to the heat sink 1212 of the fixed cover 121, the heat generated by the front amplifier board chip 1221 of the front amplifier board 122 during operation can be directly conducted to the fixed cover 121 and quickly dissipated through the fixed cover 121 to improve the heat dissipation efficiency of the sonar.

[0035] Preferably, thermal conductive silicone grease 100 is provided between the front amplifier board chip 1221 of the front amplifier board 122 and the heat sink 1212 of the fixed cover 121, so as to increase the conduction speed of heat from the front amplifier board chip 1221 to the heat sink 1212, so as to further improve the heat dissipation efficiency of the sonar.

[0036] Specifically, in the attached Figures 1 to 7 In the specific example of the sonar of the present invention shown, the number of the front amplifier boards 122 of the top cover 12 is two, and each of the front amplifier boards 122 is mounted with two front amplifier board chips 1221 for signal reception and processing, and accordingly, the fixed cover 121 has two cover body through holes 1211, and the fixed cover 121 is provided with two downwardly extending heat sinks 1212 at the edge of each cover body through hole 1211, wherein the top of one of the front amplifier boards 122 extends to the top of the fixed cover 121 through one of the cover body through holes 1211 of the fixed cover 121, and the front amplifier board 122 The two front amplifier board chips 1221 of 2 are respectively fitted with the two heat sinks 1212 of the fixed cover 121, the top of the other front amplifier board 122 extends to the top of the fixed cover 121 through the other cover body through-hole 1211 of the fixed cover 121, and the two front amplifier board chips 1221 of this front amplifier board 122 are respectively fitted with the other two heat sinks 1212 of the fixed cover 121. In this way, the heat generated by each front amplifier board chip 1221 of the front amplifier board 122 during operation can be directly conducted to the fixed cover 121 and dissipated through the fixed cover 121.

[0037] Preferably, each of the front amplifier board chips 1221 of a front amplifier board 122 is respectively located on a side of the front amplifier board 122 away from another front amplifier board chip 1221. In this way, the front amplifier board chip 1221 is located on the outside of the front amplifier board 122 to avoid heat source concentration, which is beneficial to the heat dissipation of the sonar.

[0038] It should be noted that, similar to the sonar in the prior art, Figures 1 to 7 In the specific example of the sonar shown, the receiving array and the transmitting array are wrapped by the vulcanized rubber layer 123, and the present invention will not elaborate on the assembly relationship and connection relationship between the receiving array and the transmitting array and other components or assemblies.

[0039] Since the chip for signal reception and processing is mounted on the front-end amplifier board 122 to form the front-end amplifier board chip 1221, Figures 1 to 7 In the specific example of the sonar of the present invention shown, the electronic part 30 does not include a receiving board. Specifically, the electronic part 30 includes a main control board 31 and a transmitting board 32, the transmitting board 32 is connected to the main control board 31, and the front amplifier board 122 and the watertight terminal 20 are respectively connected to the main control board 31.

[0040] Since the electronic part 30 of the sonar of the present invention does not include a receiving board, the sonar can reduce the number of circuit boards, which not only reduces the cost of the sonar, but also helps to miniaturize and lighten the sonar. At the same time, since the electronic part 30 of the sonar of the present invention does not include a receiving board, and the chip for signal reception and processing is mounted on the front amplifier board 122 to form the front amplifier board chip 1221, the heat source of the sonar is dispersed, which is beneficial to the heat dissipation of the sonar.

[0041] Reference Figures 2 to 7 The electronic part 30 includes a filter plate 33, and the filter plate 33 is received in the receiving cavity 111 of the electronic compartment 11, wherein the watertight terminal 20 is connected to the filter plate 33, and the filter plate 33 is connected to the main control board 31, so that the watertight terminal 20 is connected to the main control board 31 through the filter plate 33. That is, in the attached Figures 1 to 7 In this specific example of the sonar of the present invention shown, the filter board 33 and the watertight terminal 20 are respectively connected to the main control board 31, and the main control board 31 and the watertight terminal 20 are connected by the filter board 33, wherein the filter board 33 is used to provide filtering effect for removing noise interference and / or performing frequency selection, etc.

[0042] Preferably, the filter plate 33 has a plate through hole 331, the extension direction of the filter plate 33 is perpendicular to the extension direction of the watertight terminal 20, and the part of the watertight terminal 20 located in the receiving cavity 111 of the electronic cabin 11 passes through the plate through hole 331 of the filter plate 33, and the filter plate 33 can be locked to the electronic cabin 11 by a group of screws 200. In this way, the sonar not only makes the structure of the main control board 31, the transmitting board 32, the filter plate 33 and the end of the watertight terminal 20 accommodated in the receiving cavity 111 of the electronic cabin 11 more compact, so as to make full use of the space in the receiving cavity 111 of the electronic cabin 11, which is beneficial to the miniaturization and lightweight of the sonar, but also avoids the concentration of heat sources, which is beneficial to the heat dissipation of the sonar. In other words, the filter plate 33 is adjacent to the inner end of the watertight terminal 20, so that the inner end of the watertight terminal 20 can be directly connected to the filter plate 33, so that the distance between the wire of the watertight terminal 20 and the filter plate 33 is shorter. Therefore, even if the wire of the watertight terminal 20 is not provided with a shielding layer, the sonar can also have a better electromagnetic shielding function.

[0043] Continue to refer to the attached Figures 2 to 7The electronic part 30 includes a power board 34, which is mounted on the fixed cover 121, and the power board 34 is connected to the receiving array and the main control board 31 respectively. In this way, the heat generated by the power board 34 during operation can be directly conducted to the fixed cover 121, and dissipated through the fixed cover 121, so as to greatly improve the heat dissipation speed of the sonar. At the same time, the power board 34 can be far away from the main control board 31, the transmitting board 32 and the filter board 33, so that the sonar can avoid heat concentration and is conducive to the heat dissipation of the sonar.

[0044] The specific method of mounting the power board 34 on the fixing cover 121 is that at least one first screw hole 341 is provided on the power board 34, and at least one first threaded hole 1213 is provided on the fixing cover 121. After the power board 34 is superimposed on the fixing cover 121 so that the power board 34 and the fixing cover 121 are in surface contact, the first screw holes 341 of the power board 34 correspond to the first threaded holes 1213 of the fixing cover 121 respectively, and the threaded ends of the screws 200 extend to the first threaded holes 1213 of the fixing cover 121 after respectively passing through the first screw holes 341 of the power board 34, and the threaded ends of the screws 200 and the fixing cover 121 are screwed together, so that the power board 34 is reliably mounted on the fixing cover 121.

[0045] It can also be understood that, by installing the power board 34 on the fixing cover 121 through the screw 200, the power board 34 and the fixing cover 121 are pressed tightly, that is, the power board 34 and the fixing cover 121 are face to face, so that there is no gap between the power board 34 and the fixing cover 121, so that the heat generated by the power board 34 during operation can be quickly conducted to the fixing cover 121 and dissipated through the fixing cover 121.

[0046] Continue to refer to the attached Figures 2 to 7 The sonar further includes at least one flexible flat cable 40, one end of the flexible flat cable 40 is connected to the main control board 31, and the other end of the flexible flat cable 40 is connected to the front amplifier board 122, so that the front amplifier board 122 and the main control board 31 are connected through the flexible flat cable 40.

[0047] In this specific example of the sonar of the present invention, there are two front amplifier boards 122, one of which is connected to a main control board cable plug 311 of the main control board 31 via a soft flat cable 40, and the other is connected to another main control board cable plug 311 of the main control board 31 via another soft flat cable 40. In addition, in the sonar of the present invention, the filter board 33 and the main control board 31, as well as the power board 34 and the main control board 31, are connected using the soft flat cable 40.

[0048] In the attached Figures 1 to 7 In the specific example of the sonar of the present invention shown, from a side view, the soft flat cable 40 used to connect the front amplifier board 122 and the main control board 31 is in an "S" shape. In this way, in a small space, the sonar can ensure the reliability of the conductive relationship between the soft flat cable 40 and the main control board 31 and the conductive relationship between the soft flat cable 40 and the front amplifier board 122.

[0049] Specifically, the main control board 31 is received in the receiving cavity 111 of the electronic compartment 11 in a "standing" manner, and the front panel 122 is suspended from the receiving cavity 111 of the electronic compartment 11 by the fixed cover 121, so that the front panel 122 is located above the main control board 31, and the extension direction of the main control board 31 is consistent with the extension direction of the front panel 122. Since the sonar needs to be miniaturized, the height of the sonar needs to be as small as possible. Therefore, the distance between the top of the main control board 31 and the bottom of the front panel 122 is very small. Limited by the structure of the soft cable 40, if the position of the main control board cable plug 311 located at the top of the main control board 31 and the front panel cable plug 122 are The positions of the heads 1222 correspond in the height direction. Then, during the assembly of the sonar, when one end of the soft flat cable 40 is inserted into the main control board cable plug 311 of the main control board 31 and the other end is inserted into the front amplifier board cable plug 1222 of the front amplifier board 122 and the main control board 31 is installed on the fixed cover 121, one end of the soft flat cable 40 and the main control board cable plug 311 of the main control board 31 as well as the other end of the soft flat cable 40 and the front amplifier board cable plug 1222 of the front amplifier board 122 will be subjected to force and become loose or even fall off, resulting in the reliability of the conductive relationship between the soft flat cable 40 and the main control board 31 and the conductive relationship between the soft flat cable 40 and the front amplifier board 122 becoming poor. In order to avoid this problem, in the sonar of the present invention, the main control board cable plug 311 of the main control board 31 is located on the outside of the main control board 31 (that is, the side of the main control board 31 away from the transmitting board 32), and the front amplifier board cable plug 1222 of the front amplifier board 122 is located on the inside of the front amplifier board 122. In this way, the main control board cable plug 311 of the main control board 31 and the front amplifier board cable plug 1222 of the front amplifier board 122 are misaligned in the horizontal direction, increasing the main control board cable plug 311 of the main control board 31 and the front amplifier board 122. The distance between the flexible flat cable 40 and the front amplifier board cable plug 1222 is reduced, so that during the assembly of the sonar, when the main control board 31 is installed on the fixed cover 121, the middle part of the flexible flat cable 40 will automatically bend into an "S" shape, reducing the force on one end of the flexible flat cable 40 and the main control board cable plug 311 of the main control board 31 and the other end of the flexible flat cable 40 and the front amplifier board cable plug 1222 of the front amplifier board 122, thereby ensuring the reliability of the conductive relationship between the flexible flat cable 40 and the main control board 31 and the conductive relationship between the flexible flat cable 40 and the front amplifier board 122.In addition, the main control board cable plug 311 of the main control board 31 and the front amplifier board cable plug 1222 of the front amplifier board 122 are offset in the horizontal direction, thereby increasing the distance between the main control board cable plug 311 of the main control board 31 and the front amplifier board cable plug 1222 of the front amplifier board 122, making it convenient to install the soft cable 40 respectively with the main control board cable plug 311 of the main control board 31 and the front amplifier board cable plug 1222 of the front amplifier board 122.

[0050] Preferably, the transmitting board 32 has an escape gap 320 for escaping the main control board cable plug 311 of the main control board 31 .

[0051] Further, please refer to the attached Figures 2 to 7 The sonar of the present invention includes a bracket 50, the main control board 31 and the transmitting board 32 of the electronic part 30 are arranged on the bracket 50 at intervals, and the bracket 50 is locked to the fixed cover 121 to install the main control board 31 and the transmitting board 32 on the fixed cover 121, so that after the fixed cover 121 is installed on the electronic cabin 11, the main control board 31 and the transmitting board 32 are accommodated in the accommodating cavity 111 of the electronic cabin 11 by the bracket 50 and the fixed cover 121. In this way, on the one hand, in the process of assembling the sonar, the main control board 31 and the transmitting board 32 can be connected outside the electronic cabin 11, and the main control board 31 and the transmitting board 32 can be installed on the bracket 50 at intervals to make the main control board 31, the transmitting board 32 and the bracket 50 modularized, and then the connection between the main control board 31 and the front amplifier board 122 and the main control board 31 can be connected. After the board 31 and the power board 34 are connected, the module is installed as a whole on the fixing cover 121. When the fixing cover 121 is installed on the electronic cabin 11 and closes the cavity 111 of the electronic cabin 11, the module is suspended by the fixing cover 121 in the accommodating cavity 111 of the electronic cabin 11 to accommodate the main control board 31 and the transmitting board 32 of the electronic part 30 in the accommodating cavity 111 of the electronic cabin 11, reducing the steps of operation in a small space, not only facilitating the operation, but also greatly improving the assembly efficiency and ensuring the reliability of the connection relationship between the main control board 31 and the transmitting board 32. On the other hand, since the bracket 50 and the electronic cabin 11 can be in direct contact, the bracket 50 can quickly transfer the heat generated by the main control board 31 and the transmitting board 32 during operation to the electronic cabin 11, and dissipate the heat through the electronic cabin 11, so as to greatly improve the heat dissipation efficiency of the sonar.

[0052] Specifically, the bracket 50 includes a bottom plate 51, a vertical plate 52 and at least one spacer 53, wherein the bottom of the vertical plate 52 is fixedly mounted on one side of the bottom plate 51, for example, the bottom of the vertical plate 52 can be fixedly mounted on one side of the bottom plate 51 by a group of screws 200, the spacer 53 is used to install the main control board 31 on the vertical plate 52, the screw 200 is used to install the launch board 32 on the spacer 53, and the spacer 53 isolates the main control board 31 and the launch board 32, in this way, the main control board 31 and the launch board 32 are arranged on the bracket 50 at intervals from each other.

[0053] More specifically, the vertical plate 52 has at least one second threaded hole 521, the main control plate 31 has at least one second screw hole 312, and the launch plate 32 has at least one third screw hole 321. The main control plate 31 is arranged on one side of the vertical plate 52, and the second screw hole 312 of the main control plate 31 corresponds to the second threaded hole 521 of the vertical plate 52. The spacer 53 has a spacer section 531, a screw-mounted section 532 integrally extending from the spacer section 531, and a third threaded hole 533 formed in the spacer section 531. The outer diameter of the spacer section 531 is larger than the inner diameter of the second screw hole 312 of the main control plate 31 and the third screw hole 321 of the launch plate 32. The screw-mounted section 532 of the spacer 53 extends after passing through the second screw hole 312 of the main control plate 31. To the second threaded hole 521 of the vertical plate 52, and the screw-mounted section 532 of the spacer 53 is screwed on the vertical plate 52 to install the main control board 31 on the bracket 50, wherein the launching plate 32 is arranged on one side of the main control board 31, and the third screw hole 321 of the launching plate 32 corresponds to the third threaded hole 533 of the spacer 53, the threaded end of the screw 200 extends to the third threaded hole 533 of the spacer 53 after passing through the third screw hole 321 of the launching plate 32, and the threaded end of the screw 200 is screwed on the spacer 53 to install the launching plate 32 on the spacer 53, so that the main control board 31 and the launching plate 32 are installed on the bracket 50 at intervals from each other, so that the main control board 31, the launching plate 32 and the bracket 50 are modularized.

[0054] Preferably, in the attached Figures 1 to 7In this specific example of the sonar of the present invention shown, the four corners of the vertical plate 52 are respectively provided with a second threaded hole 521, the four corners of the main control board 31 are respectively provided with a second screw hole 312, the four corners of the launching plate 32 are respectively provided with a third screw hole 321, and the number of the spacers 53 is four, so that the screw-mounted sections 532 of the four spacers 53 extend to the four second threaded holes 521 of the vertical plate 52 after respectively passing through the four second screw holes 312 of the main control board 31, and the threaded ends of the four screws 200 extend to the third threaded holes 533 of the four spacers 53 after respectively passing through the four third screw holes 321 of the launching plate 32, in this way, the main control board 31 and the launching plate 32 are reliably mounted on the bracket 50.

[0055] Preferably, refer to the attached Figure 2 and Figure 3 , the vertical plate 52 has at least one heat-conducting platform 523, and the main control board chip 313 of the main control board 31 is attached to the heat-conducting platform 523 of the vertical plate 52. In this way, the heat generated by the main control board chip 313 of the main control board 31 during operation can be quickly transferred to the bracket 50, and then transferred to the electronic cabin 11 through the bracket 50, and the heat is dissipated by the electronic cabin 11. More preferably, the thermal conductive silicone grease 100 is provided between the heat-conducting platform 523 of the vertical plate 52 and the main control board chip 313 of the main control board 31, so as to increase the conduction speed of heat from the main control board chip 313 to the vertical plate 52.

[0056] Furthermore, the electronic part 30 includes a conductive connector 35, and the conductive connector 35 includes a first connector 351 and a second connector 352. The first connector 351 is mounted on the main control board 31, and the second connector 352 is mounted on the launching board 32. When installing the launching board 32, the second connector 352 is inserted into the first connector 351, so that the launching board 32 and the main control board 31 are conductively connected by the conductive connector 35. In this way, no flying wire is required between the main control board 31 and the launching board 32, which not only avoids the problem of desoldering of the solder joints of the flying wires during the assembly of the sonar, but also ensures the reliability of the conductive relationship between the main control board 31 and the launching board 32, and also avoids the problem of actual performance degradation of the sonar due to poor consistency of the solder joints.

[0057] Reference Figure 2 and Figure 3The top of the vertical plate 52 is fixedly mounted on the fixed cover 121. When the fixed cover 121 is mounted on the electronic compartment 11 and closes the opening of the receiving cavity 111 of the electronic compartment 11, the bottom plate 51 and the bottom wall of the electronic compartment 11 are in contact with each other, so that heat can be quickly transferred to the electronic compartment 11 and dissipated through the electronic compartment 11. Preferably, the thermal conductive silicone grease 100 can also be disposed between the bottom plate 51 and the bottom wall of the electronic compartment 11 to increase the conduction speed of heat from the bottom plate 51 to the electronic compartment 11.

[0058] Specifically, the top of the vertical plate 52 has at least one fourth screw hole 522, and the fixing cover 121 has at least one fourth threaded hole 1214. The fourth screw hole 522 of the vertical plate 52 corresponds to the fourth threaded hole 1214 of the fixing cover 121. The threaded end of the screw 200 extends to the fourth threaded holes 1214 of the fixing cover 121 after passing through the fourth screw holes 522 of the vertical plate 52, and the threaded end of the screw 200 is screwed to the fixing cover 121. In this way, the top of the vertical plate 52 is installed on the fixing cover 121, so that the main control board 31 and the transmitting board 32 are installed on the fixing cover 121 by the bracket 50.

[0059] Preferably, there is a fourth screw hole 522 on opposite sides of the top of the vertical plate 52, and there is a fourth threaded hole 1214 on opposite sides of the fixing cover 121. The threaded ends of the two screws 200 extend to the two fourth threaded holes 1214 of the fixing cover 121 after passing through the fourth screw holes 522 of the vertical plate 52, respectively. In this way, the top of the vertical plate 52 is reliably mounted on the fixing cover 121.

[0060] In addition, refer to the attached Figure 3 The bracket 50 further includes at least one heat conductive sheet 54, the bottom of which is mounted on the other side of the bottom plate 51. For example, the screw 200 can be used to mount the bottom of the heat conductive sheet 54 on the bottom plate 51. The launch board chip 322 of the launch board 32 is attached to the heat conductive sheet 54. In this way, the heat generated by the launch board chip 322 of the launch board 32 during operation can be quickly transferred to the heat conductive sheet 54. The heat conductive sheet 54 can quickly transfer the heat to the bottom plate 51 and further transfer it to the electronic cabin 11, and the heat is dissipated through the electronic cabin 11. Preferably, the thermal grease 100 is provided between the launch board chip 322 of the launch board 32 and the heat conductive sheet 54, so as to increase the conduction speed from the launch board chip 322 to the heat conductive sheet 54.

[0061] Attached Figures 1 to 7 The assembly process of the sonar of the present invention shown may be: First, the thermal conductive silicone grease 100 is applied to the front amplifier board chip 1221 of the front amplifier board 122 and / or the heat sink 1212 of the fixed cover 121; the top of the front amplifier board 122 is allowed to extend to the upper part of the fixed cover 121 through the cover body perforation 1211 of the fixed cover 121 in a manner that the front amplifier board chip 1221 and the heat sink 1212 of the fixed cover 121 are in contact with each other, and at this time, the thermal conductive silicone grease 100 is provided between the front amplifier board chip 1221 of the front amplifier board 122 and the heat sink 1212 of the fixed cover 121; the vulcanized rubber layer 123 is vulcanized on the top of the fixed cover 121 in a manner that the vulcanized rubber layer 123 wraps the top of the front amplifier board 122, so as to obtain the top cover 12.

[0062] Secondly, the thermal conductive silicone grease 100 is applied to the main control board chip 313 of the main control board 31 and / or the thermal conductive platform 523 of the vertical plate 52; the main control board 31 is allowed to be arranged on one side of the vertical plate 52 in a manner that the main control board chip 313 and the thermal conductive platform 523 are fitted together, and the thermal conductive silicone grease 100 is provided between the main control board chip 313 of the main control board 31 and the thermal conductive platform 523 of the vertical plate 52; the screw mounting of each of the spacers 53 is allowed The segments 532 respectively pass through the second screw holes 312 of the main control board 31 and align with the second threaded holes 521 of the vertical board 52, and the spacer 53 is rotated to allow the screw-mounted segments 532 to extend into the second threaded holes 521 of the vertical board 52 in a manner of being screwed on the vertical board 52, so that the spacer 53 is used to install the main control board 31 on the vertical board 52; the transmitting board 32 is set on the main control board 31 in a manner of plugging the second connector 352 into the first connector 351. 1, at this time, the first connector 351 and the second connector 352 are conductively connected to the main control board 31 and the transmitting board 32; the threaded ends of the screw rods 200 are allowed to align with the third threaded holes 533 of the spacers 53 after passing through the third screw holes 321 of the transmitting board 32 respectively, and the screw rods 200 are rotated to allow the threaded ends of the screw rods 200 to extend into the third threaded holes 533 of the spacers 53 in a manner of being screwed to the spacers 53, so that the screw rods 200 are screwed to the third screw holes 533 of the spacers 53. 00 is used to install the launch board 32 on the spacer 53 and realize the connection between the launch board 32 and the main control board 31; apply the thermal grease 100 to the launch board chip 322 and / or the thermal conductive sheet 54 of the launch board 32; install the thermal conductive sheet 54 on the base plate 51 in a manner that the thermal conductive sheet 54 is attached to the launch board chip 322 of the launch board 32, and at this time, the thermal grease 100 is provided between the launch board chip 322 of the launch board 32 and the thermal conductive sheet 54.

[0063] Third, the top of the vertical plate 52 is locked to the fixed cover 121 through the screws 200; one end of the soft flat cable 40 is connected to the main control board cable plug 311 of the main control board 31, and after the other end of the soft flat cable 40 passes through the gap between the main control board 31 and a front amplifier board 122, this end of the soft flat cable 40 is connected to the front amplifier board cable plug 1222 of the front amplifier board 122, so that the front amplifier board 122 and the main control board 31 are connected by the soft flat cable 40.

[0064] Fourth, the power board 34 is mounted on the fixing cover 121 through the screws 200 , and the power board 34 and the main control board 31 are connected through the flexible flat cable 40 .

[0065] Fifth, the filter board 33 is installed on the electronic compartment 11 through the screws 200 , and the watertight terminal 20 and the filter board 33 are connected, and the filter board 33 and the main control board 31 are connected through the flexible flat cable 40 .

[0066] Sixth, the thermal conductive silicone grease 100 is applied between the bottom surface of the bottom plate 51 and / or the bottom wall of the electronic cabin 11, and the top cover 12 is installed on the electronic cabin 11 in such a way that the bottom surface of the bottom plate 51 and the bottom wall of the electronic cabin 11 are in contact with each other, and the opening of the receiving cavity 111 of the electronic cabin 11 is closed by the fixing cover 121. After fixing the top cover 12 and the electronic cabin 11, the assembly of the sonar is completed.

[0067] According to another aspect of the present invention, the present invention provides a method for assembling the sonar, wherein the method comprises the following steps: (a) allowing the top of the front amplifier board 122 to extend from the bottom of the fixed cover 121 to the top through the cover body through hole 1211 of the fixed cover 121, wherein the front amplifier board chip 1221 of the front amplifier board 122 is attached to the heat sink 1212 extending downward from the edge of the cover body through hole 1211 of the fixed cover 121; (b) vulcanizing the vulcanized rubber layer 123 on the top of the fixed cover 121 in such a manner that the vulcanized rubber layer 123 wraps the top of the front plate 122 to obtain the top cover 12 of the housing portion 10; (c) the main control board 31 and the transmitting board 32 of the electronic part 30 are respectively arranged on the fixing cover 121, and the main control board 31 and the front amplifier board 122 are conductively connected, the transmitting board 32 and the front amplifier board 122 are conductively connected, and the main control board 31 and the transmitting board 32 are conductively connected; and (d) When the fixing cover 121 is installed on the electronic compartment 11 , the main control board 31 and the transmitting board 32 are allowed to be accommodated in the accommodation cavity 111 of the electronic compartment 11 .

[0068] Furthermore, the step (c) further includes the steps of: (c.1) installing the main control board 31 and the transmitting board 32 on the bracket 50 in a manner that the main control board 31 and the transmitting board 32 are spaced apart from each other; (c.2) locking the bracket 50 to the fixing cover 121; (c.3) connecting the front amplifier board 122 and the main control board 31 respectively through the flexible flat cable 40.

[0069] Optionally, in other examples of the assembly method of the present invention, the step (c.3) is performed before the step (c.2), so that the front amplifier board 122 and the main control board 31 are first connected and the front amplifier board 122 and the transmitting board 32 are connected through the flexible flat cable 40, and then the bracket 50 is locked to the fixed cover 121.

[0070] Attached Figures 8 to 11 A modified example of the sonar of the present invention is shown, and the attached Figures 1 to 7 The sonar shown is different in that Figures 8 to 11 In the specific example of the sonar shown, the heat sink 1212 of the fixed cover 121 has a heat sink slope 12121, and the heat sink slope 12121 of the heat sink 1212 faces the front amplifier board chip 1221 of the front amplifier board 122. The sonar further includes a clamping portion 60, and the clamping portion 60 has a relative clamping slope 61 and a clamping plane 62, at least a portion of the clamping portion 60 is clamped between the heat sink 1212 of the fixed cover 121 and the front amplifier board chip 1221 of the front amplifier board 122, and the clamping slope 61 of the clamping portion 60 and the heat sink 12121 face each other. The heat sink slope 12121 of the heat plate 1212 is in contact with each other, and the pressing plane 62 of the pressing part 60 is in contact with the surface of the front amplifier board chip 1221. When assembling the sonar, the pressing slope 61 of the pressing part 60 and the heat sink slope 12121 of the heat sink 1212 cooperate with each other, so that the pressing plane 62 of the pressing part 60 is pressed toward the front amplifier board chip 1221, so that the heat generated by the front amplifier board chip 1221 during operation can be quickly conducted through the pressing part 60 to at least the heat sink 1212 and further conducted to the fixed cover 121, and the heat is dissipated through the fixed cover 121.

[0071] Preferably, the thermal grease 100 is provided between the pressing plane 62 of the pressing part 60 and the front amplifier board chip 1221 of the front amplifier board 122 to increase the conduction speed from the front amplifier board chip 1221 through the pressing part 60 to the fixing cover 121 .

[0072] Reference Fig. 9 and Fig.10The clamping portion 60 includes two plug-in sheets 63 and a crossbeam 64 extending between the two plug-in sheets 63, each of the plug-in sheets 63 is respectively provided with a clamping inclined surface 61 and a clamping plane 62, the crossbeam 64 has at least one crossbeam 64, the fixed cover 121 has at least one fifth threaded hole 1215, each of the plug-in sheets 63 is respectively inserted into each of the front-stage board chips 1221 of the front-stage board 122 and each of the fixed cover 121 After the space between the heat sinks 1212, each of the cross beams 64 and each of the fifth threaded holes 1215 of the fixing cover 121 corresponds, and the threaded ends of each of the screw rods 200 extend to each of the fifth threaded holes 1215 of the fixing cover 121 after passing through each of the cross beams 64, and the threaded ends of the screw rods 200 and the fixing cover 121 are screwed together to prevent the insertion sheet 63 of the clamping portion 60 from loosening or falling off.

[0073] Attached Figures 8 to 11 The assembly process of the sonar shown may be: First, the thermal conductive silicone grease 100 is applied to the front amplifier board chip 1221 of the front amplifier board 122 and / or the pressing bevel 61 of the pressing part 60; the front amplifier board 122 is allowed to extend to the upper part of the fixed cover 121 through the cover body through-hole 1211 of the fixed cover 121 in a face-to-face manner with the front amplifier board chip 1221 and the heat sink bevel 12121 of the heat sink 1212 of the fixed cover 121, at which time the thermal conductive silicone grease 100 is provided between the front amplifier board chip 1221 of the front amplifier board 122 and the heat sink 1212 of the fixed cover 121; the vulcanized rubber layer 123 is vulcanized on the top of the fixed cover 121 in a manner that the vulcanized rubber layer 123 wraps the top of the front amplifier board 122; the plug-in sheet 63 of the pressing part 60 is inserted into the front amplifier board 122 After the space between each of the front-amplifier board chips 1221 and each of the heat sinks 1212 of the fixed cover 121 is formed, the threaded end of the screw 200 is allowed to align with the fifth threaded hole 1215 of the fixed cover 121 through the cross beam 64 of the cross beam 64. In the process of rotating the screw 200 to allow the threaded end of the screw 200 to be screwed onto the fixed cover 121, the screw 200 pushes the cross beam 64 to move toward the direction close to the fixed cover 121, and the cross beam 64 drives the insertion piece 63 to move synchronously. In this process, the clamping bevel 61 of the clamping part 60 and the heat sink bevel 12121 of the heat sink 1212 cooperate with each other, so that the clamping plane 62 of the clamping part 60 is pressed toward the front-amplifier board chip 1221 to obtain the top cover 12.

[0074] Secondly, the thermal conductive silicone grease 100 is applied to the main control board chip 313 of the main control board 31 and / or the thermal conductive platform 523 of the vertical plate 52; the main control board 31 is allowed to be arranged on one side of the vertical plate 52 in a manner that the main control board chip 313 and the thermal conductive platform 523 are fitted together, and the thermal conductive silicone grease 100 is provided between the main control board chip 313 of the main control board 31 and the thermal conductive platform 523 of the vertical plate 52; the screw mounting of each of the spacers 53 is allowed The segments 532 respectively pass through the second screw holes 312 of the main control board 31 and align with the second threaded holes 521 of the vertical board 52, and the spacer 53 is rotated to allow the screw-mounted segments 532 to extend into the second threaded holes 521 of the vertical board 52 in a manner of being screwed on the vertical board 52, so that the spacer 53 is used to install the main control board 31 on the vertical board 52; the transmitting board 32 is set on the main control board 31 in a manner of plugging the second connector 352 into the first connector 351. 1, at this time, the first connector 351 and the second connector 352 are conductively connected to the main control board 31 and the transmitting board 32; the threaded ends of the screw rods 200 are allowed to align with the third threaded holes 533 of the spacers 53 after passing through the third screw holes 321 of the transmitting board 32 respectively, and the screw rods 200 are rotated to allow the threaded ends of the screw rods 200 to extend into the third threaded holes 533 of the spacers 53 in a manner of being screwed to the spacers 53, so that the screw rods 200 are screwed to the third screw holes 533 of the spacers 53. 00 is used to install the launch board 32 on the spacer 53 and realize the connection between the launch board 32 and the main control board 31; apply the thermal grease 100 to the launch board chip 322 and / or the thermal conductive sheet 54 of the launch board 32; install the thermal conductive sheet 54 on the base plate 51 in a manner that the thermal conductive sheet 54 is attached to the launch board chip 322 of the launch board 32, and at this time, the thermal grease 100 is provided between the launch board chip 322 of the launch board 32 and the thermal conductive sheet 54.

[0075] Third, the top of the vertical plate 52 is locked to the fixed cover 121 through the screws 200; one end of the soft flat cable 40 is connected to the main control board cable plug 311 of the main control board 31, and after the other end of the soft flat cable 40 passes through the gap between the main control board 31 and a front amplifier board 122, this end of the soft flat cable 40 is connected to the front amplifier board cable plug 1222 of the front amplifier board 122, so that the front amplifier board 122 and the main control board 31 are connected by the soft flat cable 40.

[0076] Fourth, the power board 34 is mounted on the fixing cover 121 through the screws 200 , and the power board 34 and the main control board 31 are connected through the flexible flat cable 40 .

[0077] Fifth, the filter board 33 is installed on the electronic compartment 11 through the screws 200 , and the watertight terminal 20 and the filter board 33 are connected, and the filter board 33 and the main control board 31 are connected through the flexible flat cable 40 .

[0078] Sixth, the thermal conductive silicone grease 100 is applied between the bottom surface of the bottom plate 51 and / or the bottom wall of the electronic cabin 11, and the top cover 12 is installed on the electronic cabin 11 in such a way that the bottom surface of the bottom plate 51 and the bottom wall of the electronic cabin 11 are in contact with each other, and the opening of the receiving cavity 111 of the electronic cabin 11 is closed by the fixing cover 121. After fixing the top cover 12 and the electronic cabin 11, the assembly of the sonar is completed.

[0079] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be modified or altered in any way without departing from the principles.

Claims

1. Sonar, characterized in that, include: Watertight terminals; Electronics part; as well as A cover part, wherein the cover part includes an electronic compartment and a top cover, wherein the electronic compartment has a receiving cavity, the electronic part is received in the receiving cavity of the electronic compartment, the watertight terminal is arranged in the electronic compartment, and the watertight terminal is connected to the electronic part, wherein the top cover includes a fixed cover, a front plate and a vulcanized rubber layer, the fixed cover has a cover body perforation and a heat sink extending downward from the edge of the cover body perforation, the top of the front plate extends to the top of the fixed cover through the cover body perforation of the fixed cover, the chip of the front plate is attached to the heat sink of the fixed cover, the vulcanized rubber layer is vulcanized on the top of the fixed cover, and the vulcanized rubber layer wraps the top of the front plate, wherein the fixed cover is installed on the electronic compartment in a manner of closing the cavity opening of the receiving cavity, and the front plate is connected to the electronic part.

2. The sonar according to claim 1, wherein the electronic part comprises a main control board and a transmitting board connected to the main control board, and the front amplifier board and the watertight terminal are respectively connected to the main control board.

3. The sonar according to claim 2, wherein the electronic part includes a filter board, the watertight terminal is connected to the filter board, and the filter board is connected to the main control board, so that the watertight terminal is connected to the main control board through the filter board.

4. The sonar according to claim 3, wherein the filter plate has a plate through hole, the extension direction of the filter plate is perpendicular to the extension direction of the watertight terminal, and the part of the watertight terminal located in the accommodating cavity of the electronic compartment passes through the plate through hole of the filter plate. 5 . The sonar according to claim 2 , wherein the sonar comprises a flexible flat cable, one end of the flexible flat cable is connected to the main control board, and the other end of the flexible flat cable is connected to the front amplifier board.

6. The sonar according to claim 5, wherein the flexible flat cable is in an "S" shape when viewed from a side perspective.

7. The sonar according to claim 2, 5 or 6, wherein the sonar comprises a bracket, the main control board and the transmitting board are arranged on the bracket at intervals from each other, and the bracket is locked to the fixed cover, so that the main control board and the transmitting board are accommodated in the accommodating cavity of the electronic cabin by the bracket.

8. A method for assembling sonar, characterized in that: The assembly method comprises the following steps: (a) allowing the top of the front amplifier board to extend from the bottom of the fixed cover to the top through the cover hole of the fixed cover, wherein the chip of the front amplifier board is attached to the heat sink of the fixed cover extending downward from the edge of the cover hole; (b) vulcanizing the vulcanized rubber layer on the top of the fixed cover in a manner that the vulcanized rubber layer wraps the top of the front plate to obtain a top cover of the housing portion; (c) placing the main control board and the transmitting board of the electronic part on the fixed cover respectively, and conductively connecting the main control board and the front amplifier board, conductively connecting the transmitting board and the front amplifier board, and conductively connecting the main control board and the transmitting board; as well as (d) When the fixing cover is installed on the electronic compartment, the main control board and the transmitting board are allowed to be accommodated in the accommodation cavity of the electronic compartment.

9. The assembly method according to claim 8, wherein the step (c) further comprises the steps of: (c.1) mounting the main control board and the transmitting board on a bracket of the sonar in a manner that the main control board and the transmitting board are spaced apart from each other; (c.2) locking the bracket to the fixed cover; as well as (c.3) Connect the front amplifier board and the main control board via flexible flat cables respectively.

10. The assembly method according to claim 9, wherein in the above method, the step (c.3) is performed before the step (c.2), so that the front amplifier board and the main control board and the front amplifier board and the transmitting board are first connected through the flexible flat cable, and then the bracket is locked to the fixed cover.

Images