Sonar with detachable transmitting array

Abstract

The sonar comprises a watertight compartment, a watertight terminal, a circuit board unit and a transmitting-receiving array unit, the watertight terminal is installed in the watertight compartment in a watertight mode, the circuit board unit is contained in a containing cavity of the watertight compartment, the circuit board unit is connected to the watertight terminal, and the transmitting-receiving array unit is arranged in the containing cavity of the watertight compartment. Wherein the transceiving array unit comprises a fixed cover, a vulcanization part, a receiving array and a transmitting array, the fixed cover is provided with a first cover body through hole, the receiving array is provided with a front placing plate, the top of the front placing plate extends to the upper part of the fixed cover through the first cover body through hole of the fixed cover, and the vulcanization part is arranged on the front placing plate. The vulcanization part is integrally vulcanized on the top of the fixing cover and wraps the top of the front placing plate, the emission array is installed on the fixing cover, and the fixing cover is installed on the watertight compartment in the mode that a cavity opening of the containing cavity of the watertight compartment is sealed. The front amplifier board of the receiving array and the transmitting array are respectively connected to the circuit board unit.

Description

Technical Field

[0001] The invention relates to the technical field of underwater detection, in particular to a sonar with a detachable transmitting array. Background Art

[0002] The transmitting array and receiving array are the core components of the sonar, wherein the transmitting array can convert electrical signals into sound wave signals and transmit them into the water, and the receiving array can receive the sound wave signals propagating in the water and convert them into electrical signals. In the sonar of the prior art, for example, in the Chinese invention patent application with the application announcement number CN117930248A, the transmitting array and the receiving array of the top cover of the sonar are both wrapped by a vulcanized rubber layer vulcanized on the fixed cover, which makes the transmitting array and the receiving array non-detachable. The problem with the sonar of the prior art is that when any of the arrays of the transmitting array and the receiving array is damaged, the entire top cover needs to be replaced, which makes the maintenance cost of the sonar abnormally high and easily causes waste. Summary of the invention

[0003] One object of the present invention is to provide a sonar with a detachable transmitting array, wherein the receiving array of the sonar is wrapped by a vulcanized portion vulcanized on a fixed cover, and the transmitting array of the sonar is installed on the fixed cover. When one of the receiving array and the transmitting array is damaged, only the damaged array body needs to be repaired or replaced, thereby avoiding waste and reducing the maintenance cost of the sonar.

[0004] One object of the present invention is to provide a sonar with a detachable transmitting array, wherein the opposite sides of the mounting groove of the fixed cover are respectively provided with an inclined surface. When the sonar moves in the water, the inclined surfaces of the fixed cover can avoid the generation of tiny bubbles on the opposite sides of the transmitting array, thereby ensuring that the sound wave signal emitted by the transmitting array only passes through one medium to improve the detection accuracy of the sonar. On the other hand, the transmitting array has a larger transmitting field of view to avoid interference.

[0005] According to one aspect of the present invention, the present invention provides a sonar with a detachable transmitting array, comprising: A watertight compartment, wherein the watertight compartment has a receiving cavity; A watertight terminal, wherein the watertight terminal is watertightly mounted in the watertight compartment; A circuit board unit, wherein the circuit board unit is received in the receiving cavity of the watertight compartment, and the circuit board unit is connected to the watertight terminal; and A transceiver array unit, wherein the transceiver array unit comprises a fixed cover, a vulcanized portion, a receiving array and a transmitting array, the fixed cover having a first cover body through-hole, the receiving array having a front plate, the top of the front plate extending to the top of the fixed cover through the first cover body through-hole of the fixed cover, the vulcanized portion is integrally vulcanized on the top of the fixed cover, and the vulcanized portion wraps the top of the front plate, the transmitting array is installed on the fixed cover, wherein the fixed cover is installed on the watertight compartment in a manner of closing the cavity opening of the receiving cavity of the watertight compartment, and the front plate of the receiving array and the transmitting array are respectively connected to the circuit board unit.

[0006] According to one embodiment of the present invention, the fixing cover has a mounting groove, and a portion of the transmitting array sinks into the mounting groove of the fixing cover.

[0007] According to an embodiment of the present invention, the fixing cover has inclined surfaces on opposite sides of the mounting slot, and the height position of the end of the inclined surface adjacent to the mounting slot is higher than the height position of the end of the inclined surface away from the mounting slot.

[0008] According to one embodiment of the present invention, the fixed cover has a ring body and a baffle at the rear and front of the mounting groove respectively, the ring body surrounds the top of the front plate, the vulcanization portion is formed inside the ring body, and the shape and size of the baffle match the shape and size of the portion of the transmitting array that is not sunken into the mounting groove of the fixed cover.

[0009] According to an embodiment of the present invention, there is an acute angle between the extension direction of the watertight terminal and the height direction of the sonar.

[0010] According to an embodiment of the present invention, the angle formed between the extension direction of the watertight terminal and the height direction of the sonar is in the range of 15°-30°.

[0011] According to one embodiment of the present invention, the fixed cover has a heat sink, which extends downward from the edge of the perforation of the first cover body, and the front amplifier board chip of the front amplifier board and the heat sink of the fixed cover correspond or are slightly offset in the horizontal direction, wherein the sonar further includes a clamping unit, and the clamping unit includes an insertion sheet and a connecting arm, the insertion sheet is arranged at the end of the connecting arm, and the connecting arm is installed on the fixed cover, and the insertion sheet is inserted into the space between the front amplifier board chip of the front amplifier board and the heat sink of the fixed cover, and one side of the insertion sheet is attached to the front amplifier board chip of the front amplifier board, and the other side of the connecting arm is attached to the heat sink of the fixed cover.

[0012] According to an embodiment of the present invention, the fixed cover has a heat sink extending downward from the edge of the hole of the first cover body, and the front amplifier chip of the front amplifier board and the heat sink of the fixed cover are in surface contact with each other.

[0013] According to one embodiment of the present invention, the surface of the insert sheet that is attached to the front amplifier board chip of the front amplifier board is a plane, and the surface of the connecting arm that is attached to the heat sink is an inclined surface. According to one embodiment of the present invention, there is thermal grease between the front amplifier board chip of the front amplifier board and the insert sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a stereoscopic schematic diagram of a sonar according to a preferred embodiment of the present invention.

[0015] Figure 2 It is a schematic diagram of a top-down perspective of the sonar according to the above preferred embodiment of the present invention.

[0016] Figure 3 It is a schematic diagram of a first perspective of the sonar according to the above preferred embodiment of the present invention.

[0017] Figure 4 1 is a schematic diagram of a second perspective of the sonar according to the preferred embodiment of the present invention.

[0018] Figure 5 1 is a schematic diagram of a third perspective of the sonar according to the preferred embodiment of the present invention.

[0019] Figure 6 It is a schematic cross-sectional view of the sonar according to the above preferred embodiment of the present invention from a plane perspective.

[0020] Figure 7 It is a cross-sectional schematic diagram of a first position of the sonar according to the above preferred embodiment of the present invention from a stereoscopic perspective.

[0021] Figure 8 It is a cross-sectional schematic diagram of a second position of the sonar according to the above preferred embodiment of the present invention from a three-dimensional perspective.

[0022] Fig. 9A It is a cross-sectional schematic diagram of a stereoscopic perspective of the sonar at a third position according to the above preferred embodiment of the present invention.

[0023] Fig. 9B yes Fig. 9A A magnified view of the local location.

[0024] Fig.10 It is a stereoscopic schematic diagram of a local position of the sonar according to the above preferred embodiment of the present invention.

[0025] Fig.11 It is a schematic diagram of a first perspective of the above-mentioned local position of the sonar according to the above-mentioned preferred embodiment of the present invention.

[0026] Fig.12 It is a schematic diagram of a second perspective of the above-mentioned local position of the sonar according to the above-mentioned preferred embodiment of the present invention.

[0027] Fig.13 It is a stereoscopic schematic diagram of a first viewing angle of another local position of the sonar according to the above preferred embodiment of the present invention.

[0028] Fig.14 It is a stereoscopic schematic diagram of a second viewing angle of the above-mentioned local position of the sonar according to the above-mentioned preferred embodiment of the present invention.

[0029] Fig.15 It is a schematic diagram of a first perspective of the above-mentioned local position of the sonar according to the above-mentioned preferred embodiment of the present invention.

[0030] Fig.16 It is a schematic diagram of a second perspective of the above-mentioned local position of the sonar according to the above-mentioned preferred embodiment of the present invention. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] With reference to the accompanying drawings of the present invention Figures 1 to 16 A sonar with a detachable transmitting array according to a preferred embodiment of the present invention will be disclosed and explained in the following description, wherein the sonar includes a watertight compartment 10, a watertight terminal 20, a circuit board unit 30 and a transceiver array unit 40.

[0034] Reference Figures 3 to 9B , the watertight compartment 10 has a receiving cavity 11, and the watertight terminal 20 is watertightly installed in the watertight compartment 10. Specifically, the watertight compartment 10 further has a terminal passage 12, and the terminal passage 12 is connected to the receiving cavity 11 and the outside, wherein one end of the watertight terminal 20 extends from the outside to the receiving cavity 11 of the watertight compartment 10 through the terminal passage 12 of the watertight compartment 10, and an "O" ring is provided between the watertight terminal 20 and the watertight compartment 10 to watertightly install the watertight terminal 20 in the watertight compartment 10.

[0035] The circuit board unit 30 is received in the receiving cavity 11 of the watertight compartment 10 , and the circuit board unit 30 is connected to the watertight terminal 20 .

[0036] The transceiver array unit 40 includes a fixed cover 41, a vulcanized portion 42, a receiving array 43 and a transmitting array 44. The fixed cover 41 has at least one first cover body through hole 411, wherein the receiving array 43 has at least one front plate 431, the top of the front plate 431 extends to the top of the fixed cover 41 through the first cover body through hole 411 of the fixed cover 41, wherein the vulcanized portion 42 is integrally vulcanized on the top of the fixed cover 41, and the vulcanized portion 42 wraps the top of the front plate 431, wherein the transmitting array 44 is detachably mounted on the fixed cover 41. The fixed cover 41 is mounted on the watertight compartment 10 in a manner of closing the cavity opening of the receiving cavity 11 of the watertight compartment 10, and the front plate 431 of the receiving array 43 and the transmitting array 44 are respectively connected to the circuit board unit 30.

[0037] In the sonar of the present invention, the fixed cover 41, the vulcanization part 42 and the receiving array 43 are combined into a whole during the vulcanization process of the vulcanization part 42. After vulcanization, the transmitting array 44 is installed on the fixed cover 41, that is, the receiving array 43 cannot be removed from the fixed cover 41, and the transmitting array 44 can be removed from the fixed cover 41. In this way, when one of the receiving array 43 and the transmitting array 44 is damaged, only the damaged array body needs to be repaired or replaced, so that waste can be avoided and the maintenance cost of the sonar can be reduced. It can be understood that in the process of vulcanizing the vulcanization part 42 on the top of the fixed cover 41, the receiving array 43 may be slightly tilted. The tilt amount can be measured after the sonar is powered on. In the process of installing the transmitting array 44, the tilt amount of the transmitting array 44 can be fine-tuned to make the receiving array 43 and the transmitting array 44 compatible, thereby ensuring the performance of the sonar.

[0038] Reference Figure 1 , Figure 7 and Figure 8The middle part of the front side of the watertight compartment 10 has a groove 13 and a mounting platform 14 for defining the groove 13. The terminal channel 12 is provided on the mounting platform 14, and the terminal channel 12 is connected to the receiving cavity 11 of the watertight compartment 10 and the groove 13. The watertight terminal 20 is mounted on the mounting platform 14 of the watertight compartment 10. For example, in some embodiments, the watertight terminal 20 can be locked on the mounting platform 14 of the watertight compartment 10 by a screw cap. In other embodiments, the watertight terminal 20 can also be vulcanized on the mounting platform 14 of the watertight compartment 10. The outer end of the watertight terminal 20 is located in the groove 13 of the watertight compartment 10, so as to prevent the outer end of the watertight terminal 20 from protruding from the front side of the watertight compartment 10. In this way, when the sonar is transported, the space occupied by the sonar can be reduced, the reliability of the conductive relationship between the watertight terminal 20 and the circuit board unit 30 can be ensured, and the watertightness of the installation position of the watertight terminal 20 and the watertight compartment 10 can be ensured.

[0039] It should be noted that by allowing the outer end of the watertight terminal 20 to be located in the groove 13 of the watertight compartment 10, the reliability of the conductive relationship between the watertight terminal 20 and the circuit board assembly 30 and the watertightness of the installation position of the watertight terminal 20 and the watertight compartment 10 can be ensured because the watertight terminal 20 is not easily collided during the transportation of the sonar.

[0040] Preferably, refer to the attached Figure 8 , the installation platform 14 of the watertight compartment 10 is not horizontally arranged, but has an acute angle with the horizontal plane, so there is an acute angle between the extension direction of the watertight terminal 20 and the height direction of the sonar. In this way, not only can the space of the receiving chamber 11 of the watertight compartment 10 be saved, but also the space of the receiving chamber 11 of the watertight compartment 10 can be made more regular, especially the bottom of the receiving chamber 11 of the watertight compartment 10 has a more regular shape, which is conducive to making full use of the receiving chamber 11 of the watertight compartment 10. In addition, by tilting the watertight terminal 20, when connecting the watertight terminal 20 and the cable of the ship or submersible, it is not only convenient to tighten the nut used to connect the watertight terminal 20 and the cable of the ship or submersible by hand, but also when the sonar is equipped to the application environment, it can avoid the problem that the cable is easily broken at the connection position of the cable and the watertight terminal 20 due to the need to extend horizontally.

[0041] In the sonar of the present invention, the angle formed between the extension direction of the watertight terminal 20 and the height direction of the sonar should be neither too small nor too large. If the angle formed between the extension direction of the watertight terminal 20 and the height direction of the sonar is too small, the watertight terminal 20 tends to be vertically arranged, resulting in the above-mentioned beneficial effect of the inclined watertight terminal 20 being not obvious. If the angle formed between the inclined direction of the watertight terminal 20 and the height direction of the sonar is too large, the watertight terminal 20 tends to be horizontally arranged, which also results in the above-mentioned beneficial effect of the inclined watertight terminal 20 being not obvious. Therefore, in the sonar of the present invention, in order to ensure that the inclined watertight terminal 20 obviously has the above-mentioned beneficial effect, the angle formed between the extension direction of the watertight terminal 20 and the height direction of the sonar is preferably not less than 15°, and the maximum should not be greater than 30°, that is, the appropriate value range of the angle formed between the extension direction of the watertight terminal 20 and the height direction of the sonar is 15°-30°.

[0042] Reference Fig. 9A , Fig. 9B , Fig.11 and Fig.12 The fixed cover 41 has a mounting groove 412, and a portion of the transmitting array 44 sinks into the mounting groove 412 of the fixed cover 41. In this way, it is helpful to reduce the height dimension of the sonar, making the sonar miniaturized.

[0043] Furthermore, the fixed cover 41 has a positioning groove 410, and the positioning groove 410 is formed by being recessed from one side of the mounting groove 412. The transmitting array 44 has a positioning protrusion 440, and the positioning boss 440 is at the bottom of the transmitting array 44, wherein when a part of the transmitting array 44 sinks to the mounting groove 412 of the fixed cover 41, the positioning boss 440 of the transmitting array 44 extends into the positioning groove 410 of the fixed cover 41, so that the installation direction of the transmitting array 44 can be prevented from being reversed, and the "foolproof" assembly of the transmitting array 44 can be achieved. Preferably, the size of the positioning groove 410 of the fixed cover 41 is slightly larger than the size of the positioning boss 440 of the transmitting array 44, so that in the process of installing the transmitting array 44, the tilt of the transmitting array 44 can be fine-tuned to make the receiving array 43 and the transmitting array 44 compatible, thereby ensuring the performance of the sonar.

[0044] The fixed cover 41 further has a ring body 413 and a baffle 414, wherein the ring body 413 is located at the rear side of the mounting groove 412, and the ring body 413 surrounds the top of the front plate 431 of the receiving array 43, and the vulcanization part 42 is formed inside the ring body 413, wherein the baffle 414 is located at the front side of the mounting groove 412, and the shape and size of the baffle 414 match the shape and size of the portion of the transmitting array 44 that is not sunk into the mounting groove 412 of the fixed cover 41. That is, the ring body 413 and the baffle 414 of the fixed cover 41 are respectively located at the rear side and the front side of the transmitting array 44, so that when the sonar moves in the water, the ring body 413 and the baffle 414 of the fixed cover 41 can prevent the transmitting array 44 from being directly hit, which can not only protect the transmitting array 44, but also protect the watertightness of the installation position of the transmitting array 44 and the fixed cover 41. Furthermore, since the shape and size of the baffle 414 of the fixed cover 41 match the shape and size of the portion of the transmitting array 44 that is not sunken into the mounting groove 412 of the fixed cover 41 , the baffle 414 of the fixed cover 41 will not block the sound wave signal emitted by the transmitting array 44 .

[0045] Reference Figures 1 to 4 , Figures 7 to 9B The fixed cover 41 has two inclined surfaces 415, the two inclined surfaces 415 are respectively located on opposite sides of the mounting groove 412, and the height positions of the two inclined surfaces 415 adjacent to the mounting groove 412 are higher than the height positions of the ends of the inclined surfaces 415 away from the mounting groove 412, that is, the angle formed between the extension directions of the two inclined surfaces 415 of the fixed cover 41 is greater than 180°. In this way, when the sonar moves in the water, the inclined surfaces 415 of the fixed cover 41 can push the water flow to the two sides of the transmitting array 44, avoid the generation of tiny bubbles on the opposite sides of the transmitting array 44, ensure that the sound wave signal emitted by the transmitting array 44 only passes through one medium (that is, water), which is beneficial to improve the detection accuracy of the sonar. On the other hand, the transmitting array 44 can have a larger field of view to avoid interference. Preferably, the two inclined surfaces 415 of the fixed cover 41 are symmetrical to each other.

[0046] Reference Fig. 9A and Fig. 9B The fixed cover 41 has a second cover body through hole 416, which connects the installation groove 412 of the fixed cover 41 and the receiving cavity 11 of the watertight compartment 10, wherein the cable used to connect the circuit board unit 30 and the transmitting array 44 passes through the second cover body through hole 416 of the fixed cover 41.

[0047] In the attached Figures 1 to 16 In the specific example of the sonar of the present invention shown, the transmitting array 44 is locked to the fixing cover 41 by at least one screw 100 so that the transmitting array 44 is reliably mounted on the fixing cover 41 . Specifically, the emitting array 44 has at least one first threaded hole 441, and the fixing cover 41 has at least one first screw hole 417, the first screw hole 417 extends from the bottom of the mounting groove 412 to the bottom of the fixing cover 41, and after the bottom of the emitting array 44 sinks to the mounting groove 412 of the fixing cover 41, the first screw hole 417 of the fixing cover 41 corresponds to the first threaded hole 441 of the emitting array 44, and the threaded end of the screw 100 extends to the first threaded hole 441 of the emitting array 44 after passing through the first screw hole 417 of the fixing cover 41, and the threaded end of the screw 100 is screwed to the emitting array 44, so that the emitting array 44 is locked to the fixing cover 41 by the screw 100. It can be understood that after the threaded end of the screw 100 exits the first threaded hole 441 of the emitting array 44, the emitting array 44 is removed from the fixing cover 41.

[0048] Specifically, the number of the first threaded holes 441 of the emitting array 44 is two, which are respectively located on the opposite sides of the second cover body through-hole 416. Correspondingly, the number of the first screw holes 417 of the fixing cover 41 is two. After the bottom of the emitting array 44 sinks to the mounting groove 412 of the fixing cover 41, the two first screw holes 417 of the fixing cover 41 and the two first threaded holes 441 of the emitting array 44 correspond to each other, and the threaded ends of the two screws 100 extend to the two first threaded holes 441 of the emitting array 44 after respectively passing through the two first screw holes 417 of the fixing cover 41, and the threaded ends of the two screws 100 are respectively screwed on the emitting array 44, so that the emitting array 44 is locked to the fixing cover 41 by the two screws 100.

[0049] In particular, continue to refer to the attached Fig. 9A and Fig. 9B There is at least one sealing ring 200 between the emitting array 44 and the fixed cover 41. In the process of locking the emitting array 44 to the fixed cover 41 by the screw 100, the sealing ring 200 is pressed by the emitting array 44 and the fixed cover 41 and deformed to increase the water tightness between the emitting array 44 and the fixed cover 41.

[0050] Reference Figures 3 to 6 , Figures 10 to 12The front amplifier board 431 of the receiving array 43 has at least one front amplifier board chip 4311, and the fixed cover 41 has at least one heat sink 418, and the heat sink 418 extends downward from the edge of the first cover body through hole 411, and the front amplifier board chip 4311 of the front amplifier board 431 and the heat sink 418 of the fixed cover 41 are arranged face to face. The sonar further includes at least one clamping unit 50, and the clamping unit 50 includes at least one plug-in sheet 51 and a connecting arm 52, wherein the plug-in sheet 51 is arranged at the end of the connecting arm 52, and at least a part of the plug-in sheet 51 is inserted between the front amplifier board chip 4311 of the front amplifier board 431 and the heat sink 418 of the fixed cover 41, and one side of the plug-in sheet 51 is attached to the front amplifier board chip 4311 of the front amplifier board 431, and one side of the connecting arm 52 is attached to the heat sink 418 of the fixed cover 41. In this way, the heat generated by the front amplifier board chip 4311 of the front amplifier board 431 during operation can be quickly conducted to the fixed cover 41 via the plug-in sheet 51 and the connecting arm 52, and dissipated through the fixed cover 41, so as to greatly improve the heat dissipation speed of the sonar.

[0051] Preferably, the surface of the heat sink 418 of the fixed cover 41 facing the front amplifier board chip 4311 of the front amplifier board 431 is an inclined surface, so the surface of the connecting arm 52 facing away from the front amplifier board chip 4311 of the front amplifier board 431 is an inclined surface, and the surface of the plug-in sheet 51 facing the front amplifier board chip 4311 of the front amplifier board 431 is a plane. In this way, when the plug-in sheet 51 is inserted into the space between the front amplifier board chip 4311 of the front amplifier board 431 and the heat sink 418 of the fixed cover 41, the heat sink 418 of the fixed cover 41 The inclined surface of the connecting arm 52 cooperates with each other, so that the plug-in sheet 51 moves laterally toward the direction of the front amplifier board chip 4311 close to the front amplifier board 431 as its own plug-in depth changes, and finally ensures that one side of the plug-in sheet 51 is close to the front amplifier board chip 4311 of the front amplifier board 431 and one side of the connecting arm 52 is close to the heat sink 418 of the fixed cover 41, so that the heat generated by the front amplifier board chip 4311 of the front amplifier board 431 during operation can be directly conducted to the fixed cover 41 through the plug-in sheet 51 to ensure the heat dissipation efficiency of the sonar. Preferably, the sonar can be provided with a thermal conductive silicone grease 300 between the front amplifier board chip 4311 of the front amplifier board 431 and the plug-in sheet 51.

[0052] Optionally, in other examples of the sonar of the present invention, the opposite sides of the plug-in sheet 51 can be respectively close to the front amplifier board chip 4311 of the front amplifier board 431 and the heat sink 418 of the fixed cover 41. Optionally, in other examples of the sonar of the present invention, the front amplifier board chip 4311 of the front amplifier board 431 and the heat sink 418 of the fixed cover 41 can also be directly attached, so that the heat generated by the front amplifier board chip 4311 of the front amplifier board 431 during operation can be directly conducted to the fixed cover 41 and dissipated through the fixed cover 41.

[0053] In the attached Figures 1 to 16 In the specific example of the sonar of the present invention shown, the front amplifier board 431 has two front amplifier board chips 4311, which are arranged at intervals along the width direction of the front amplifier board 431. Correspondingly, the fixed cover 41 is provided with two downwardly extending heat sinks 418 at the edge of the first cover body perforation 411, and the two front amplifier board chips 4311 of the front amplifier board 431 and the two heat sinks 418 of the fixed cover 41 correspond to each other in the horizontal direction. The pressing unit 50 includes two plug-in sheets 51, which are symmetrically arranged on opposite sides of the connecting arm 52, and the connecting arm 52 is installed on the fixed cover 41, and the two plug-in sheets 51 are respectively inserted and maintained in the space between the two front amplifier board chips 4311 of the front amplifier board 431 and the two heat sinks 418 of the fixed cover 41.

[0054] In the sonar of the present invention, the screw rod 100 can be used to install the connecting arm 52 on the fixing cover 41. Figure 8The fixing cover 41 has at least one second threaded hole 419, and the connecting arm 52 has at least one second screw hole 521. After the two insertion pieces 51 are respectively inserted into the space between the two front-stage chips 4311 of the front-stage board 431 and the two heat sinks 418 of the fixing cover 41, the second screw hole 521 of the connecting arm 52 corresponds to the second threaded hole 419 of the fixing cover 41. The threaded end of the screw 100 is aligned with the second threaded hole 419 of the fixing cover 41 after passing through the second screw hole 521 of the connecting arm 52. When the screw 100 is rotated, the threaded end of the screw 100 is allowed to extend into the second threaded hole 419 of the fixing cover 41 in a manner of being screwed to the fixing cover 41. During the process of threading the two threaded holes 419, the screw 100 applies pressure to the connecting arm 52 to move the connecting arm 52 toward the direction close to the fixed cover 41, and the connecting arm 52 drives the two plug-in plates 51 to move synchronously to adjust the insertion depth of the plug-in plate 51 and the lateral movement distance of the plug-in plate 51. After the plug-in plate 51 is in contact with the front plate chip 4311 of the front plate 431, the screw 100 is stopped. In this way, the screw 100 is used to install the connecting arm 52 on the fixed cover 41, and ensure that one side of the plug-in plate 51 is in contact with the front plate chip 4311 of the front plate 431 and one side of the connecting arm 52 is close to the heat sink 418 of the fixed cover 41.

[0055] In this specific example of the sonar of the present invention, at least one of the front amplifier board chips 4311 of the front amplifier board 431 is a chip for receiving and processing sound wave signals. In this way, on the one hand, the circuit board unit 30 of the sonar of the present invention does not include a receiving circuit board. On the other hand, since the chip for receiving and processing sound wave signals generates a large amount of heat during operation, the front amplifier board chip 4311 is formed by integrating the chip for receiving and processing sound wave signals into the front amplifier board 431. The heat generated by the front amplifier board chip 4311 of the front amplifier board 431 during operation can be quickly transferred to the fixed cover 41 through the pressing unit 50, and dissipated through the fixed cover 41. Since the peripheral wall of the fixed cover 41 is exposed and has a large area, the fixed cover 41 can quickly dissipate heat to greatly improve the heat dissipation speed of the sonar. In this specific example of the sonar of the present invention, the number of the front amplifier boards 431 is two, and each of the front amplifier boards 431 is mounted with two front amplifier board chips 4311, and accordingly, the fixed cover 41 has two first cover body through-holes 411, and the sonar includes two pressing units 50. Preferably, each of the front amplifier board chips 4311 of one of the front amplifier boards 431 is located on the side of the front amplifier board 431 away from the other front amplifier board 431, that is, the front amplifier board chips 4311 are located on the outside of the front amplifier board 431, so as to avoid the concentration of heat sources and facilitate the heat dissipation of the sonar.

[0056] It is understandable that the other front-amplifier chips 4311 of the front-amplifier board 431 can perform other functions, and these front-amplifier chips 4311 can be mounted on the top of the front-amplifier board 431. Figure 6 , Figure 7 and Figure 8 The transceiver array unit 40 further includes at least one array heat conductive sheet 45, the top of which is attached to at least one of the front amplifier board chips 4311 and is wrapped by the vulcanization part 42, and the bottom of which can extend to the fixed cover 41, so that part of the heat generated by the front amplifier board chips 4311 of the front amplifier board 431 during operation is directly conducted to the vulcanization part 42, and the heat is dissipated by the vulcanization part 42, and the other part is conducted to the fixed cover 41 through the array heat conductive sheet 45, and the heat is dissipated by the fixed cover 41. It can be understood that the array heat conductive sheet 45 is wrapped by the vulcanization part 42, so the array heat conductive sheet 45 and the front amplifier board chip 4311 can be tightly attached.

[0057] Continue to refer to the attached Figures 3 to 9B , Figures 13 to 16The circuit board unit 30 includes a main control board 31 and a transmitting board 32, and the transmitting board 32, the front amplifier board 431 and the watertight terminal 20 are respectively connected to the main control board 31. Since the circuit board unit 30 does not include a receiving board, the sonar can reduce the number of circuit boards. In this way, not only can the cost of the sonar be reduced, but also the sonar can be miniaturized and lightweight. At the same time, since the circuit board unit 30 does not include a receiving board and the chip for receiving and processing sound wave signals is mounted on the front amplifier board 431, the heat source of the sonar is dispersed, which is beneficial to the heat dissipation of the sonar.

[0058] Reference Figure 4 , Figures 6 to 9B The circuit board unit 30 includes a filter board 33, and the filter board 33 is accommodated in the accommodation cavity 11 of the watertight compartment 10. For example, the screw 100 can be used to lock the filter board 33 in the watertight compartment 10 to accommodate the filter board 33 in the accommodation cavity 11 of the watertight compartment 10, wherein the watertight terminal 20 is connected to the filter board 33, and the filter board 33 is connected to the main control board 31, so that the watertight terminal 20 is connected to the main control board 31 via the filter board 33. The filter board 33 is used to provide filtering, for removing noise interference and / or performing frequency selection, etc. Preferably, the filter board 33 and the watertight terminal 20 are adjacent.

[0059] Reference Figures 5 to 9B The circuit board unit 30 includes a power board 34, and the power board 34 is installed on the fixed cover 41 in a face-to-face manner. For example, the screw 100 can be used to lock the power board 34 on the fixed cover 41, so that the power board 34 is installed on the fixed cover 41 in a face-to-face manner, wherein the transmitting array 44 and the transmitting board 32 are respectively connected to the power board 34. Since the power board 34 and the fixed cover 41 are face-to-face, the heat generated by the power board 34 during operation can be directly conducted to the fixed cover 41 and dissipated through the fixed cover 41. At the same time, the power board 34 is 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.

[0060] Reference Figures 3 to 5The circuit board unit 30 further includes a plurality of flexible flat cables 35, at least one of which can be used to connect the main control board 31 and the front amplifier board 431 to conduct the main control board 31 and the front amplifier board 431, at least one of which can be used to connect the main control board 31 and the filter board 33 to conduct the main control board 31 and the filter board 33, and at least one of which can be used to connect the transmitting board 32 and the power board 34 to conduct the transmitting board 32 and the power board 34.

[0061] Continue to refer to the attached Figures 3 to 9B , Figures 13 to 16 The sonar further includes a bracket 60, the main control board 31 and the transmitting board 32 are installed on the bracket 60 at intervals, and the bracket 60 is installed on the fixing cover 41. After the fixing cover 41 is installed on the watertight compartment 10, the fixing cover 41 and the bracket 60 accommodate the main control board 31 and the transmitting board 32 in the accommodating cavity 11 of the watertight compartment 10. In this way, on the one hand, during the assembly of the sonar, the conduction between the main control board 31 and the transmitting board 32, the conduction between the main control board 31 and the front amplifier board 431, and the conduction between the transmitting board 32 and the power board 34 can be first realized outside the watertight compartment 10. After the filter board 33 and the main control board 31 are connected, the fixing cover 41 is installed on the watertight compartment 10 and the opening of the receiving cavity 11 of the watertight compartment 10 is closed to reduce the steps of operation in a small space, which is not only convenient for operation, but also can greatly improve the reliability of the connection relationship between each circuit board. On the other hand, the bracket 60 can not only be in surface contact with the fixing cover 41, but also in surface contact with the watertight compartment 10, so as to quickly conduct the heat generated by the main control board 31 during operation to the watertight compartment 10 and the fixing cover 41, and dissipate the heat through the watertight compartment 10 and the fixing cover 41, thereby greatly improving the heat dissipation speed of the sonar.

[0062] Specifically, the bracket 60 includes a bottom plate 61, a vertical plate 62, and a group of locking columns 63. The bottom of the vertical plate 62 is mounted on one side of the bottom plate 61. For example, one side of the bottom plate 61 has at least one third screw hole 611, and the bottom of the vertical plate 62 has at least one third threaded hole 621. The third threaded hole 621 of the vertical plate 62 corresponds to the third screw hole 611 of the bottom plate 61. The threaded end of the screw 100 extends to the third threaded hole 621 of the vertical plate 62 after passing through the third screw hole 611 of the bottom plate 61, and the threaded end of the screw 100 is screwed to the vertical plate 62, so that the screw 100 is used to mount the bottom of the vertical plate 62 on one side of the bottom plate 61. The vertical plate 62 further has a group of fourth threaded holes 622, and the main control board 31 has at least one group of fourth screw holes 311. The main control board 31 is arranged on one side of the vertical plate 62, and the fourth screw hole 311 of the main control board 31 corresponds to the fourth threaded hole 622 of the vertical plate 62. The locking column 63 includes a spacing section 631 and a screwing section 632 extending from the spacing section 631. The outer diameter of the spacing section 631 is larger than the inner diameter of the fourth screw hole 311 of the main control board 31. The screwing section 632 of the locking column 63 extends to the fourth threaded hole 622 of the vertical plate 62 after passing through the fourth screw hole 311 of the main control board 31, and the screwing section 632 is screwed to the vertical plate 62, so that the locking column 63 is used to install the main control board 31 on the bracket 60. The locking column 63 is provided with a fifth threaded hole 633 in the spacing section 631, and the launching plate 32 has a group of fifth screw holes 321, the inner diameter of the fifth screw holes 321 is smaller than the outer diameter of the spacing section 631, the launching plate 32 is arranged on one side of the main control board 31, and the main control board 31 and the launching plate 32 are separated by the spacing section 631, the fifth screw hole 321 of the launching plate 32 corresponds to the fifth threaded hole 633 of the locking column 63, the threaded end of the screw 100 extends to the fifth threaded hole 633 of the locking column 63 after passing through the fifth screw hole 321 of the launching plate 32, and the threaded end of the screw 100 is screwed to the locking column 63, so that the screw 100 is used to install the launching plate 32 on the bracket 60.

[0063] In the sonar of the present invention, a fourth threaded hole 622 is provided at each corner of the vertical plate 62, a fourth screw hole 311 is provided at each corner of the main control board 31, and a fifth screw hole 321 is provided at each corner of the launching board 32. In this way, the main control board 31 and the launching board 32 can be reliably mounted on the bracket 60.

[0064] Reference Fig.15 and Fig.16 The vertical plate 62 has a heat-conducting platform 623, and the main control board 31 has a main control board chip 312. The main control board chip 312 of the main control board 31 is attached to the heat-conducting platform 623 of the vertical plate 62. In this way, the heat generated by the main control board chip 312 of the main control board 31 during operation can be quickly transferred to the vertical plate 62, and further transferred to the watertight compartment 10 and the fixed cover 41, and the heat is dissipated through the watertight compartment 10 and the fixed cover 41, thereby greatly improving the heat dissipation speed of the sonar. Preferably, the sonar can be provided with the heat-conducting silicone grease 300 between the main control board chip 312 of the main control board 31 and the heat-conducting platform 623 of the vertical plate 62.

[0065] Continue to refer to the attached Fig.15 and Fig.16 The main control board 31 has a main control board connector 313, and the transmitting board 32 has a transmitting board connector 322. The transmitting board connector 322 of the transmitting board 32 is inserted into the main control board connector 313 of the main control board 31, so that the main control board 31 and the transmitting board 32 are conductively connected by the main control board connector 313 and the transmitting board connector 322. In this way, no flying wire is required between the main control board 31 and the transmitting board 32, thereby not only avoiding the problem of desoldering of the solder joints of the flying wires during the assembly of the sonar, but also preventing the problem of degradation of the actual performance of the sonar due to poor consistency of the solder joints.

[0066] Reference Figures 3 to 5 , Figures 13 to 16 , the top of the vertical plate 62 is mounted on the fixing cover 41, and after the fixing cover 41 is mounted on the watertight compartment 10, the fixing cover 41 and the bracket 60 accommodate the main control board 31 and the launch board 32 in the accommodating cavity 11 of the watertight compartment 10. Specifically, the vertical plate 62 has at least one sixth screw hole 624, and the fixing cover 41 has at least one sixth threaded hole 4110. The sixth screw hole 624 of the vertical plate 62 corresponds to the sixth threaded hole 4110 of the fixing cover 41. The threaded end of the screw 100 extends to the sixth threaded hole 4110 of the fixing cover 41 after passing through the sixth screw hole 624 of the vertical plate 62, and the threaded end of the screw 100 is screwed to the fixing cover 41, so that the screw 100 is used to install the vertical plate 62 on the fixing cover 41.

[0067] In this specific example of the sonar of the present invention, the opposite sides of the top of the vertical plate 62 respectively have a sixth screw hole 624, and correspondingly, the opposite sides of the fixing cover 41 respectively have a sixth threaded hole 4110, and the threaded ends of the two screws 100 respectively extend to the two sixth threaded holes 4110 of the fixing cover 41 after passing through the two sixth screw holes 624 of the vertical plate 62, so that the two screws 100 are used to reliably mount the vertical plate 62 on the fixing cover 41.

[0068] Reference Figure 3 , Figure 5 , Fig.13 and Fig.15 The bracket 60 includes at least one frame heat conductive sheet 64, the bottom of which is mounted on the side of the bottom plate 61 away from the vertical plate 62, and the launch plate 32 has a launch plate chip 323, which is attached to the frame heat conductive sheet 64, so that the heat generated by the launch plate chip 323 of the launch plate 32 during operation can be quickly transferred to the frame heat conductive sheet 64, and the frame heat conductive sheet 64 transfers the heat to the bottom plate 61, and further transfers the heat to the watertight compartment 10, and dissipates the heat through the watertight compartment 10. Preferably, the sonar is provided with the thermal conductive silicone grease 300 between the launch plate chip 323 of the launch plate 32 and the frame heat conductive sheet 64.

[0069] Specifically, the base plate 61 has at least one seventh screw hole 612, and the bottom of the frame heat conductive plate 64 has at least one seventh threaded hole 641. The seventh threaded hole 641 of the frame heat conductive plate 64 corresponds to the seventh screw hole 612 of the base plate 61. The threaded end of the screw 100 extends to the seventh threaded hole 641 of the frame heat conductive plate 64 after passing through the seventh screw hole 612 of the base plate 61, and the threaded end of the screw 100 is screwed onto the frame heat conductive plate 64, so that the screw 100 is used to install the frame heat conductive plate 64 on the base plate 61.

[0070] Continue to refer to the attached Fig. 9A The sonar further includes a pressure sensor 70, which is mounted on the fixing cover 41 and connected to the circuit board unit 30, for example, the pressure sensor 70 is connected to the power board 34. When the sonar is placed in water, the pressure sensor 70 can measure the current depth of the sonar according to the water pressure.

[0071] Preferably, the fixing cover 41 has an embedding groove 4111 and a third cover channel 4112, wherein the third cover channel 4112 is connected to the embedding groove 4111 of the fixing cover 41 and the receiving chamber 11 of the watertight compartment 10, wherein the top of the pressure sensor 70 is arranged in the embedding groove 4111 of the fixing cover 41, and the bottom of the pressure sensor 70 passes through the third cover channel 4112 of the fixing cover 41. The sonar further comprises a nut 80, wherein the outer diameter of the nut 80 is larger than the inner diameter of the third cover channel 4112 of the fixing cover 41, and the nut 80 is screwed on the portion of the pressure sensor 70 passing through the third cover channel 4112 of the fixing cover 41, so as to install the pressure sensor 70 on the fixing cover 41. Preferably, the power board 34 has an avoidance through hole 341 for avoiding the nut 80.

[0072] In particular, continue to refer to the attached Fig. 9A At least one sealing ring 200 is arranged between the pressure sensor 70 and the fixed cover 41. In the process of screwing the nut 80 onto the portion of the pressure sensor 70 that passes through the third cover channel 4112 of the fixed cover 41, the sealing ring 200 is deformed by the pressure sensor 70 and the fixed cover 41 to increase the water tightness between the pressure sensor 70 and the fixed cover 41.

[0073] Continue to refer to the attached Fig. 9A , the embedding groove 4111 of the fixed cover 41 is formed by the bottom of the installation groove 412 being recessed downward, so the pressure sensor 70 is located below the transmitting array 44 to hide the pressure sensor 70. That is to say, the pressure sensor 70 is visually invisible. In order to enable the pressure sensor 70 to measure the water pressure to measure the current depth of the sonar, the sonar has a gap 90, and the gap 90 is formed between the transmitting array 44 and the fixed cover 41, and the gap 90 is connected to the external environment and the embedding groove 4111. When the sonar is placed in water, water can reach the location of the embedding groove 4111 of the fixed cover 41 through the gap 90. At this time, the pressure sensor 70 can measure the water pressure, thereby measuring the current depth of the sonar.

[0074] The assembly process of the sonar of the present invention may include the following steps.

[0075] S1, installing the watertight terminal 20 in the watertight compartment 10 watertightly.

[0076] S2, installing the filter plate 33 in the watertight compartment 10 in a manner that the filter plate 33 is accommodated in the accommodation cavity 11 of the watertight compartment 10, and connecting the watertight terminal 20 and the filter plate 33.

[0077] S3, allowing the top of the front amplifier board 431 to extend to the top of the fixed cover 41 through the first cover body through-hole 411 of the fixed cover 41, and fitting the top of the array heat conductive sheet 45 to the front amplifier board chip 4311 located at the top of the front amplifier board 431 and fitting the bottom of the array heat conductive sheet 45 to the fixed cover 41.

[0078] S4, vulcanizing the vulcanization part 42 in the ring body 413 of the fixed cover 41, wherein the vulcanization part 42 wraps the front amplifier board 431 and the array heat conductive sheet 45, and the front amplifier board chip 4311 of the front amplifier board 431 and the heat sink 418 of the fixed cover 41 correspond to or are slightly offset in the horizontal direction.

[0079] S5, after the insertion piece 51 of the pressing unit 50 is inserted into the space between the front-stage chip 4311 of the front-stage plate 431 and the heat sink 418 of the fixing cover 41, the threaded end of the screw 100 is allowed to pass through the second screw hole 521 of the connecting arm 52 and then align with the second threaded hole 419 of the fixing cover 41, and the screw 100 is rotated so that the threaded end of the screw 100 extends into the second threaded hole 419 of the fixing cover 41 during the process of being screwed to the fixing cover 41. In this process, the screw 100 applies pressure to the connecting arm 52, so that the connecting arm 52 moves in the direction close to the fixed cover 41, and the connecting arm 52 drives the two plug-in pieces 51 to move synchronously to adjust the insertion depth of the plug-in piece 51 and the lateral movement distance of the plug-in piece 51, and the screw 100 is stopped after the plug-in piece 51 is attached to the front plate chip 4311 of the front plate 431, so that the screw 100 is used to install the connecting arm 52 on the fixed cover 41, and ensure that one side of the plug-in piece 51 is tightly attached to the front plate chip 4311 of the front plate 431 and one side of the connecting arm 52 is close to the heat sink 418 of the fixed cover 41.

[0080] S6, after a portion of the pressure sensor 70 passes through the third cover body channel 4112 of the fixed cover 41, allow the nut 80 to be screwed onto the portion of the pressure sensor 70 passing through the third cover body channel 4112 of the fixed cover 41 to install the pressure sensor 70 on the fixed cover 41.

[0081] S7, after a portion of the emitting array 44 sinks into the mounting groove 412 of the fixing cover 41, the threaded end of the screw rod 100 is allowed to pass through the first screw hole 417 of the fixing cover 41 and then be aligned with the first threaded hole 441 of the emitting array 44, and the screw rod 100 is rotated so that the threaded end of the screw rod 100 extends into the first threaded hole 441 of the emitting array 44 during the process of being screwed onto the emitting array 44, thereby installing the emitting array 44 on the fixing cover 41.

[0082] S8, the power board 34 is installed on the fixing cover 41 in a face-to-face manner through the screw 100, and the transmitting array 44 and the pressure sensor 70 are connected to the power board 34.

[0083] S9, the main control board 31 is arranged on one side of the vertical plate 62 in such a way that the main control board chip 312 is attached to the heat conductive platform 623 of the vertical plate 62, the fourth screw hole 311 of the main control board 31 corresponds to the fourth threaded hole 622 of the vertical plate 62, allowing the screwing section 632 of the locking column 63 to align with the fourth threaded hole 622 of the vertical plate 62 after passing through the fourth screw hole 311 of the main control board 31, and the locking column 63 is rotated so that the screwing section 632 extends into the fourth threaded hole 622 of the vertical plate 62 during the process of being screwed to the vertical plate 62, so that the main control board 31 is installed on the bracket 60.

[0084] S10, the launch plate 32 is arranged on one side of the main control board 31 in such a manner that the launch plate connector 322 of the launch plate 32 is inserted into the main control board connector 313 of the main control board 31, the fifth screw hole 321 of the launch plate 32 corresponds to the fifth threaded hole 633 of the locking column 63, allowing the threaded end of the screw 100 to align with the fifth threaded hole 633 of the locking column 63 after passing through the fifth screw hole 321 of the launch plate 32, and the screw 100 is rotated so that the threaded end of the screw 100 extends into the fifth threaded hole 633 of the locking column 63 during the process of being screwed to the locking column 63, so that the launch plate 32 is installed on the bracket 60.

[0085] S11, the frame heat conductive sheet 64 is arranged on one side of the launch plate 32 in a manner that the frame heat conductive sheet 64 and the launch plate chip 323 of the launch plate 32 are fitted together, the seventh threaded hole 641 of the frame heat conductive sheet 64 corresponds to the seventh screw hole 612 of the base plate 61, allowing the threaded end of the screw 100 to align with the seventh threaded hole 641 of the frame heat conductive sheet 64 after passing through the seventh screw hole 612 of the base plate 61, and the screw 100 is rotated so that the threaded end of the screw 100 extends into the seventh threaded hole 641 of the frame heat conductive sheet 64 during the process of being screwed to the frame heat conductive sheet 64, so that the frame heat conductive sheet 64 is installed on the base plate 61.

[0086] S12, allowing the threaded end of the screw 100 to align with the sixth threaded hole 4110 of the fixing cover 41 after passing through the sixth screw hole 624 of the vertical plate 62, and rotating the screw 100 so that the threaded end of the screw 100 extends into the sixth threaded hole 4110 of the fixing cover 41 during the process of being screwed to the fixing cover 41, so that the bracket 60 is installed on the fixing cover 41.

[0087] S13, insert one end of the flexible flat cable 35 into a main control board plug 314 of the main control board 31, and insert the other end of the flexible flat cable 35 into a front amplifier board plug 4312 of the front amplifier board 431, so that the flexible flat cable 35 conducts between the main control board 31 and the front amplifier board 431. The extension direction of the front amplifier board 431 is consistent with the extension direction of the main control board 31, and the main control board 31 is kept below the front amplifier board 431. Since the sonar needs to be miniaturized, the distance between the top of the main control board 31 and the bottom of the front amplifier board 431 is relatively small. Limited by the structure of the flexible flat cable 35, if the main control board plug 314 of the main control board 31 is located below the front amplifier board plug 4312 of the front amplifier board 431, After one end of the soft flat cable 35 is inserted into the main control board plug 314 of the main control board 31 and the other end of the soft flat cable 35 is inserted into the front amplifier board plug 4312 of the front amplifier board 431, the bent soft flat cable 35 will cause the end of the soft flat cable 35 to have a tendency to move away from the main control board plug 314 of the main control board 31 or the front amplifier board plug 4312 of the front amplifier board 431, causing the soft flat cable 35 to loosen or even fall off. In order to avoid the above problems, in the sonar of the present invention, the front amplifier board plug 4312 of the front amplifier board 431 and the main control board plug 314 of the main control board 31 are misaligned in the horizontal direction, so that the front amplifier board plug 4312 of the front amplifier board 431 and the main control board plug 314 of the main control board 31 have a larger distance, so that after one end of the soft flat cable 35 is inserted into the main control board plug 314 of the main control board 31 and the other end of the soft flat cable 35 is inserted into the front amplifier board plug 4312 of the front amplifier board 431, the shape of the soft flat cable 35 will not cause the end of the soft flat cable 35 to have a tendency to move away from the main control board plug 314 of the main control board 31 or the front amplifier board plug 4312 of the front amplifier board 431, so that the soft flat cable 35 can reliably connect the front amplifier board 431 and the main control board 31. In addition, the power board 34 and the transmitting board 32 may also be connected via the flexible flat cable 35 .

[0088] S14, after the main control board 31 and the filter board 33 are connected, an insertion portion 4113 of the fixed cover 41 is allowed to be inserted into the receiving cavity 11 through the cavity opening of the receiving cavity 11 of the watertight compartment 10, and the fixed cover 41 is fixedly installed on the watertight compartment 10. At this time, the fixed cover 41 closes the cavity opening of the receiving cavity 11 of the watertight compartment 10, and the bottom surface of the bottom plate 61 of the bracket 60 and the bottom wall of the watertight compartment 10 are in surface contact. Preferably, the thermal conductive silicone grease 300 can be provided between the bottom surface of the bottom plate 61 and the bottom wall of the watertight compartment 10. Preferably, the sealing ring 200 is provided between the fixed cover 41 and the watertight compartment 10 to increase the watertightness of the sonar.

[0089] 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. A sonar with a detachable transmitting array, characterized in that: include: A watertight compartment, wherein the watertight compartment has a receiving cavity; A watertight terminal, wherein the watertight terminal is watertightly mounted in the watertight compartment; A circuit board unit, wherein the circuit board unit is received in the receiving cavity of the watertight compartment, and the circuit board unit is connected to the watertight terminal; as well as A transceiver array unit, wherein the transceiver array unit comprises a fixed cover, a vulcanized portion, a receiving array and a transmitting array, the fixed cover having a first cover body through-hole, the receiving array having a front plate, the top of the front plate extending to the top of the fixed cover through the first cover body through-hole of the fixed cover, the vulcanized portion is integrally vulcanized on the top of the fixed cover, and the vulcanized portion wraps the top of the front plate, the transmitting array is installed on the fixed cover, wherein the fixed cover is installed on the watertight compartment in a manner of closing the cavity opening of the receiving cavity of the watertight compartment, and the front plate of the receiving array and the transmitting array are respectively connected to the circuit board unit. 2 . The sonar according to claim 1 , wherein the fixing cover has a mounting groove, and a portion of the transmitting array sinks into the mounting groove of the fixing cover.

3. The sonar according to claim 2, wherein the fixing cover has inclined surfaces on opposite sides of the mounting slot, respectively, and the height position of the end of the inclined surface adjacent to the mounting slot is higher than the height position of the end of the inclined surface away from the mounting slot.

4. The sonar according to claim 2, wherein the fixed cover has a ring body and a baffle at the rear and front of the mounting slot respectively, the ring body surrounds the top of the front release plate, the vulcanized portion is formed inside the ring body, and the shape and size of the baffle match the shape and size of the portion of the transmitting array that is not sunk into the mounting slot of the fixed cover. 5 . The sonar according to claim 1 , wherein an extending direction of the watertight terminal and a height direction of the sonar have an acute angle therebetween.

6. The sonar according to claim 5, wherein the angle formed between the extension direction of the watertight terminal and the height direction of the sonar is in the range of 15°-30°.

7. The sonar according to any one of claims 1 to 6, wherein the fixed cover has a heat sink, the heat sink extends downward from the edge of the perforation of the first cover body, the front amplifier board chip of the front amplifier board and the heat sink of the fixed cover correspond to or are slightly offset in the horizontal direction, wherein the sonar further comprises a clamping unit, the clamping unit comprises an insertion sheet and a connecting arm, the insertion sheet is arranged at the end of the connecting arm, the connecting arm is installed on the fixed cover, the insertion sheet is inserted in the space between the front amplifier board chip of the front amplifier board and the heat sink of the fixed cover, and one side of the insertion sheet is attached to the front amplifier board chip of the front amplifier board, and the other side of the connecting arm is attached to the heat sink of the fixed cover.

8. The sonar according to any one of claims 1 to 6, wherein the fixed cover has a heat sink, the heat sink extends downward from the edge of the first cover body perforation, and the front amplifier chip of the front amplifier board and the heat sink of the fixed cover are in surface contact with each other.

9. The sonar according to claim 7, wherein the surface of the insert sheet attached to the front amplifier board chip is a plane, and the surface of the connecting arm attached to the heat sink is an inclined surface. 10 . The sonar according to claim 9 , wherein thermal conductive silicone grease is provided between the front amplifier chip and the plug-in sheet of the front amplifier board.

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