Transceiver

Abstract

To provide a transceiver capable of improving assemblability.SOLUTION: The transceiver includes at least one transceiver unit, each of the transceiver units including: a sound-absorbing member; a plurality of vibrators arranged in an arc shape on the sound-absorbing member, the plurality of vibrators having transmission and reception surfaces directed toward the radially outer side of the arc; and a flexible substrate having a plurality of junction portions connected to the first connection surface of a pair of connection surfaces that face the axial direction of the arc of the plurality of vibrators.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a transducer and an underwater detection device. [Background technology]

[0002] Patent Document 1 discloses a technique for connecting a tab bent outward from the surface of a printed circuit board to an element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 1,128,0904 Summary of the Invention [Problem to be solved by the invention]

[0004] Underwater detection devices include scanning sonars that detect underwater objects by simultaneously emitting ultrasonic waves from a transducer into the surrounding area. Transducers for such applications are equipped with a large number of transducers.

[0005] Conventionally, in the manufacture of transducers, it is necessary to solder lead wires to each transducer, then line up the transducers and then line up the lead wires in a predetermined order, making assembly difficult.

[0006] The present invention has been made in view of the above-mentioned problems, and its main object is to provide a transducer and an underwater detection device that can be easily assembled. [Means for solving the problem]

[0007] In order to solve the above problems, one aspect of the present invention provides a transducer comprising one or more transducer units, each of which comprises a sound absorbing member, a plurality of transducers arranged in an arc on the sound absorbing member, with the transducer surfaces facing radially outward in the arc, and a flexible substrate having a plurality of joints connected to a first connecting surface of a pair of connecting surfaces of the transducers facing the axial direction of the arc, thereby improving ease of assembly.

[0008] In the above aspect, the flexible substrate may further include a main body and a plurality of arms protruding radially outward from the main body in the arc-shaped direction, the arms providing the plurality of joints, thereby enabling the joints to be connected to the vibrator via the arms.

[0009] In the above aspect, the flexible substrate may further include a connector disposed on the main body portion, the connector having an insertion port facing inward in the radial direction of the arc shape, thereby providing a connector having an insertion port facing in the opposite direction to the wave transmitting and receiving surface of the transducer.

[0010] In the above aspect, each of the wave transmitting and receiving units may further include another flexible substrate having a plurality of joints connected to a second connection surface of the pair of connection surfaces of the plurality of transducers, thereby making it possible to connect another flexible substrate to the second connection surface of the transducer.

[0011] In the above aspect, the sound absorbing member may be in contact with the first connecting surface or the second connecting surface of the pair of connecting surfaces of the plurality of vibrators, thereby enabling the sound absorbing member to exhibit sound absorbing performance in a state where the sound absorbing member is in contact with the first connecting surface or the second connecting surface.

[0012] In the above aspect, the sound-absorbing member may be in contact with the first connection surfaces of the plurality of vibrators and the plurality of joints of the flexible substrate, or with the second connection surfaces of the plurality of vibrators and the plurality of joints of the other flexible substrate.

[0013] In the above aspect, each of the wave transmitting and receiving units may further include a holding member that is disposed on the opposite side of the sound absorbing member from the plurality of transducers and that holds the sound absorbing member, thereby increasing the rigidity of the wave transmitting and receiving unit.

[0014] In the above aspect, each of the wave transmitting and receiving units may further include another sound absorbing member that is disposed on the opposite side of the holding member from the sound absorbing member and is held by the holding member, thereby enabling the wave transmitting and receiving units to exhibit sound absorbing performance when stacked on top of each other.

[0015] In the above aspect, a circular set may be provided in which a plurality of the wave transmitting and receiving units are arranged in a circular shape. This makes it possible to easily assemble the circular set using the plurality of wave transmitting and receiving units.

[0016] In the above aspect, a cylindrical set may be provided in which a plurality of the annular sets are stacked in the axial direction. This makes it possible to easily assemble the cylindrical set using the plurality of annular sets.

[0017] In the above aspect, the plurality of transducers in two adjacent annular sets among the plurality of annular sets may be arranged in a staggered manner, which makes it possible to arrange the transducers in a staggered manner.

[0018] In the above aspect, the plurality of annular sets may be stacked with spacers interposed therebetween, thereby improving the axial positioning accuracy of the vibrator.

[0019] In the above aspect, each of the wave transmitting and receiving units may further include a connector disposed on the flexible substrate, the connector having an insertion port facing inward in the radial direction, whereby wiring connected to the connector can be gathered inside the cylindrical set.

[0020] In the above aspect, the connectors of two annular sets sandwiching one of the plurality of annular sets may be arranged in the axial direction, which makes it possible to easily organize the wiring connected to the connectors.

[0021] In the above aspect, the arm portion of the flexible substrate may have a notch formed between the base end connected to the main body and the joint portion, thereby making it possible to relieve stress caused by vibration of the vibrator.

[0022] In the above aspect, the flexible substrate may have a first insulating layer, a second insulating layer, and a conductor pattern disposed between the first insulating layer and the second insulating layer, and the joint may be formed with a cutout that penetrates the first insulating layer opposite the first connecting surface of the vibrator and exposes a portion of the conductor pattern, and a through-hole that penetrates the exposed portion of the conductor pattern and the second insulating layer, thereby improving the bonding strength of the joint.

[0023] In the above aspect, the joint portion of the flexible substrate may be connected to the center of the first connection surface of the vibrator, whereby the joint portion is joined to a vibration node of the vibrator, thereby making it possible to reduce variations in sound pressure characteristics.

[0024] An underwater detection device according to another aspect of the present invention includes the transducer of the above aspect, thereby making it possible to realize an underwater detection device including a transducer that is easier to assemble. [Effects of the Invention]

[0025] According to the present invention, it is possible to improve the ease of assembly. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of an underwater detection device. [Figure 2] FIG. 2 is a perspective view of a wave transmitting and receiving unit. [Figure 3] FIG. 2 is an exploded perspective view of the wave transmitting and receiving unit. [Figure 4] FIG. 2 is a front view of the wave transmitting and receiving unit. [Figure 5] FIG. 2 is a plan view of the wave transmitting and receiving unit. [Figure 6] FIG. 2 is a rear view of the wave transmitting and receiving unit. [Figure 7] FIG. 2 is a bottom view of the wave transmitting and receiving unit. [Figure 8] FIG. 2 is a left side view of the wave transmitting and receiving unit. [Figure 9] FIG. 2 is a right side view of the wave transmitting and receiving unit. [Figure 10] FIG. 2 is a plan view of a flexible substrate. [Figure 11] FIG. 2 is an enlarged view of a main part of the flexible substrate. [Figure 12] FIG. 2 is a cross-sectional view of a flexible substrate. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. 1 is a side view of a cylindrical set. [Figure 16] FIG. 1 is a cross-sectional view of a cylindrical set. [Figure 17] FIG. [Figure 18] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification and the drawings, elements similar to those described above with reference to the previous drawings will be designated by the same reference numerals, and detailed descriptions thereof may be omitted as appropriate.

[0028] [Underwater detection device] 1 is a diagram showing an example of the configuration of an underwater detection device 200. The underwater detection device 200 comprises a control unit 201, a transmitting / receiving device 202, a transducer 203, a vertical movement device 204, a display unit 205, and an operation unit 206.

[0029] The control unit 201 is a computer including a CPU, RAM, ROM, nonvolatile memory, an input / output interface, and the like.

[0030] The transmitting / receiving device 202 includes a transmitting circuit and a receiving circuit. The transmitting circuit generates a transmission signal and outputs it to the transducer 203. The receiving circuit amplifies and A / D converts the echo signal from the transducer 203 and outputs it to the control unit 201.

[0031] The transducer 203 emits ultrasonic waves into the water based on the transmission signal from the transmitter / receiver 202, and outputs echo signals based on the reflected waves to the transmitter / receiver 202. The specific configuration of the transducer 203 will be described later.

[0032] The underwater detection device 200 is a scanning sonar that detects underwater objects by simultaneously emitting ultrasonic waves from the transducer 203 in some or all directions.

[0033] The elevation device 204 raises and lowers the transducer 203. The elevation device 204 causes the transducer 203 to protrude downward from the bottom of the vessel when the underwater detection device 200 is in use, and stores the transducer 203 above the bottom of the vessel when the underwater detection device 200 is not in use.

[0034] [Transmitting and receiving unit] The following describes the wave transmitting and receiving unit 1, which is a constituent unit of the wave transmitting and receiving device 203. The wave transmitting and receiving device 203 includes one or more wave transmitting and receiving units 1.

[0035] 2 to 9 are a perspective view, an exploded perspective view, a front view, a plan view, a rear view, a bottom view, a left side view, and a right side view of the wave transmitting and receiving unit 1. 10 to 12 are a plan view, an enlarged view of a main part, and a cross-sectional view of the flexible substrate 3. In these figures, the direction in which the insertion port of the connector 35 faces is defined as the forward direction.

[0036] The arrows R1 and R2 in the figure represent the radial direction of the arc. R1 is the radially outward direction, and R2 is the radially inward direction. The arrows Z1 and Z2 represent the axial direction of the arc. Z1 is the upward direction, and Z2 is the downward direction.

[0037] The wave transmitting and receiving unit 1 includes a plurality of transducers 2 arranged in an arc shape, a flexible substrate 3 arranged on the transducers 2, and a flexible substrate 4 arranged below the transducers 2. The wave transmitting and receiving unit 1 also includes sound absorbing members 52 and 53 and a holding member 6 that holds these members.

[0038] The transducers 2 are arranged in an arc shape on the sound absorbing member 52 with the transmitting and receiving surfaces 21 facing outward in the radial direction R1. The transducers 2 are formed in a rectangular parallelepiped shape. Specifically, the transducers 2 are relatively long in the radial directions R1, R2 and relatively short in the axial directions Z1, Z2. The transducers 2 are formed of piezoelectric elements.

[0039] The flexible substrates 3 and 4 are flexible printed circuit boards (hereinafter also referred to as "FPC"). In this embodiment, FPC 3 is for signals, and FPC 4 is for grounding. FPC 4 for grounding may be omitted if grounding is possible by other means.

[0040] Furthermore, in this embodiment, FPC3 is placed above vibrator 2 and FPC4 is placed below vibrator 2, but the opposite may also be true, with FPC3 being placed below vibrator 2 and FPC4 being placed above vibrator 2.

[0041] The FPC 3 has a plurality of joints 33 connected to the upper surface 22 of the vibrator 2. The upper surface of the vibrator 2 is an example of a first connection surface. More specifically, the FPC 3 has a main body 31, a plurality of arm portions 32 protruding radially outward R1 from the main body 31, and a plurality of joints 33 provided on the arm portions 32.

[0042] The main body 31 is formed in the shape of a belt-like arc or an annular sector, and is located radially inward R2 with respect to the vibrator 2. A connector 35 is disposed at the center of the underside of the main body 31, with an insertion opening facing radially inward R2. The main body 31 also has a plurality of insertion holes 3a into which spacers 7, described below, are inserted.

[0043] The arm portion 32 protrudes from the main body portion 31, which is located on the radially inner side R2 of the vibrator 2, to the radially outer side R1, and is located on the upper surface 22 of the vibrator 2. The joint portion 33 is provided at the tip of the arm portion 32.

[0044] The FPC 4 has the same configuration as the FPC 3. That is, the FPC 4 has a plurality of joints 43 that are connected to the lower surface 22 of the vibrator 2. The lower surface of the vibrator 2 is an example of a second connection surface.

[0045] More specifically, the FPC 4 has a main body 41, a plurality of arm portions 42 protruding radially outward R1 from the main body 41, and a plurality of joint portions 43 provided on the arm portions 42. The shape of the FPC 3 and the shape of the FPC 4 are plane-symmetrical.

[0046] A connector 45 is disposed at the end of the upper surface of the main body 41, with its insertion opening facing inward in the radial direction R2. The main body 41 also has a plurality of insertion holes 4a into which spacers 7 (described later) are inserted.

[0047] The sound absorbing members 52, 53 and the holding member 6 are formed in the shape of a belt-like arc or an annular sector. The holding member 6 extends radially inward R2 from the sound absorbing members 52, 53. The sound absorbing members 52, 53 are formed from a porous sound absorbing material such as urethane sponge, and the holding member 6 is formed from a hard material such as a stainless steel plate.

[0048] The sound absorbing members 52 and 53 are attached to the holding member 6 so as to sandwich the holding member 6. The sound absorbing member 52 is attached to the upper surface of the holding member 6, and the sound absorbing member 53 is attached to the lower surface of the holding member 6.

[0049] In other words, the holding member 6 is disposed on the opposite side of the sound absorbing member 52 from the vibrator 2. The sound absorbing member 53 is disposed on the opposite side of the holding member 6 from the sound absorbing member 52.

[0050] The sound-absorbing member 52 is in contact with the lower surface 23 of the vibrator 2. The vibrator 2 is attached to the sound-absorbing member 52. Specifically, since the joint 43 of the FPC 4 is located between the vibrator 2 and the sound-absorbing member 52, the sound-absorbing member 52 is in contact with both the lower surface 23 of the vibrator 2 and the joint 43 of the FPC 4.

[0051] However, the sound absorbing member 52 may be disposed so as to be in contact with the upper surface 22 of the vibrator 2. In this case, the sound absorbing member 52 is in contact with both the upper surface 22 of the vibrator 2 and the joint portion 33 of the FPC 3.

[0052] A plurality of insertion holes 6a into which spacers 7 (described later) are inserted are formed in the holding member 6 on the radially inner side R2 of the sound absorbing members 52 and 53. The insertion holes 3a, 4a, and 6a are formed so as to overlap in a plan view. The insertion hole 6a is smaller than the insertion holes 3a and 4a.

[0053] 11, the arm portion 32 of the FPC 3 has a serpentine shape. Specifically, the arm portion 32 includes a base end portion 321 connected to the main body portion 31 and extending radially outward R1, a lateral extension portion 322 extending laterally from the base end portion 321, and a connecting portion 323 extending radially outward R1 from the lateral extension portion 322 and connected to a side portion of the joining portion 33.

[0054] In other words, the arm portion 32 has a notch 32a formed between the base end portion 321 and the joint portion 33. The notch 32a may be formed on at least a portion of the extension of the base end portion 321, but it is preferable that the notch 32a be formed so as to cross the center line of the base end portion 321 and further so as to extend over the entire width of the base end portion 321.

[0055] By forming the arm portion 32 in this manner, the vibration of the vibrator 2 can be prevented from being directly transmitted to the main body portion 31, thereby making it possible to alleviate the stress generated in the main body portion 31 and its surrounding area due to the vibration of the vibrator 2.

[0056] Furthermore, the joint 33 of the FPC 3 is connected to the center of the top surface 22 of the vibrator 2. Since the center of the top surface 22 of the vibrator 2 is a vibration node, connecting the joint 33 to this position makes it possible to reduce variations in sound pressure characteristics.

[0057] 12 is a cross-sectional view of a joint 33 of the FPC 3. The FPC 3 has a coverlay 37, a substrate 38, and a conductive pattern 39 disposed between the coverlay 37 and the substrate 38. The coverlay 37 is an example of a first insulating layer, and the substrate 38 is an example of a second insulating layer.

[0058] The FPC 3 is disposed so that the coverlay 37 faces downward and faces the upper surface 22 of the resonator 2. The joint 33 is formed with a cutout 37a that penetrates the coverlay 37 and exposes a portion of the conductive pattern 39, and a through-hole 33a that penetrates the exposed portion of the conductive pattern 39 and the substrate 38.

[0059] The bonding portion 33 is bonded to the upper surface 22 of the vibrator 2 using a conductive bonding material. Specifically, by pressing the bonding portion 33 against the upper surface 22 of the vibrator 2 to which a liquid conductive bonding material has been applied, the conductive bonding material penetrates into the cutouts 37a of the coverlay 37 and comes into contact with the conductor pattern 39.

[0060] At this time, the excess conductive bonding material is released to the outside through the through-hole 33a, which makes it possible to prevent the excess material from spreading onto the upper surface 22 of the vibrator 2, and also makes the distance between the upper surface 22 of the vibrator 2 and the conductor pattern 39 uniform, thereby making it possible to suppress variations in electrical characteristics.

[0061] Furthermore, the excess resin that has escaped through the through-holes 38 spreads over the substrate 38 and hardens, thereby providing an anchor effect that improves the bonding strength of the bonding portion 33 to the top surface 22 of the vibrator 2. Note that there may be multiple through-holes 33a in order to further improve the bonding strength.

[0062] [Ring set] 13 is a plan view of an annular set 10 made up of a plurality of wave transmitting and receiving units 1. The wave transmitting and receiving device 203 (see FIG. 1) is equipped with one or a plurality of annular sets 10 and is capable of emitting ultrasonic waves in all directions of 360 degrees.

[0063] In the annular set 10, a plurality of wave transmitting and receiving units 1 are arranged in an annular shape, and the transducers 2 included in these units are also arranged in an annular shape. In other words, the annular set 10 including the transducers 2 arranged in an annular shape can be divided into a plurality of wave transmitting and receiving units 1.

[0064] In this embodiment, the annular set 10 is configured with three wave transmitting and receiving units 1, but is not limited to this and may be configured with two or four or more wave transmitting and receiving units 1.

[0065] The annular set 10 is formed in an annular shape as a whole, and has a circular hollow portion S in the center. The hollow portion S is used to accommodate lead wires to be connected to the connectors 35, 45.

[0066] In this way, by configuring the annular set 10 to be separable into a plurality of wave transmitting and receiving units 1, it is possible to realize easy assembly and wiring even if the outer diameter of the annular set 10 is small.

[0067] [Cylindrical set] 14 to 16 are perspective views, side views, and cross-sectional views of a cylindrical set 100 made up of multiple annular sets 10. FIGS. 17 and 18 are side views and cross-sectional views of a spacer 7. A transducer 203 (see FIG. 1) is equipped with the cylindrical set 100 and is used in a scanning sonar.

[0068] In the cylindrical set 100, a plurality of annular sets 10 are stacked in the axial directions Z1 and Z2 (in Figures 14 to 18, the axial directions Z1 and Z2 are opposite to those in Figures 2 to 9). The plurality of annular sets 10 are stacked with spacers 7 sandwiched between them.

[0069] The spacer 7 has an upper shaft portion 71 and a lower shaft portion 72 that is thinner than the upper shaft portion 71. An insertion hole 7a is formed in the upper shaft portion 71, into which the lower shaft portion 72 of another spacer 7 is inserted. A thread groove is formed on the outer circumferential surface of the lower shaft portion 72.

[0070] The upper shaft portion 71 is inserted into the insertion holes 3a, 4a (see FIG. 13) of the FPCs 3, 4. The lower shaft portion 72 is inserted into the insertion hole 6a of the holding member 6 and protrudes in the axial direction Z1. The lower shaft portion 72 protruding from the holding member 6 is inserted into the insertion hole 7a of the spacer 7 adjacent to it in the axial direction Z1.

[0071] The upper shaft portions 71 of the spacers 7 are sandwiched between two adjacent holding members 6. That is, the spacing between the holding members 6 is ensured by the upper shaft portions 71 of the spacers 7. The holding member 6 is also sandwiched between the upper shaft portions 71 of the two adjacent spacers 7.

[0072] In the cylindrical set 100, the vibrators 2 of two adjacent annular sets 10A and 10B are arranged in a staggered manner. Specifically, the vibrators 2 of the odd-numbered annular set 10A and the vibrators 2 of the even-numbered annular set 10B are arranged in a staggered manner with a circumferential shift.

[0073] The wave transmitting and receiving unit 1 has two insertion holes 3a, 4a, 6a (hereinafter also referred to as "insertion holes 3a, etc.") formed circumferentially apart (see FIG. 5). These insertion holes 3a, etc. are located at different circumferential positions relative to the transducer 2.

[0074] The annular sets 10A and 10B are stacked so that the insertion holes 3a, etc. on one side of the odd-numbered annular set 10A and the insertion holes 3a, etc. on the other side of the even-numbered annular set 10B are aligned in the axial directions Z1 and Z2, thereby arranging the vibrators 2 alternately.

[0075] The connectors 35, 45 of the odd-numbered annular sets 10A are arranged in the axial directions Z1, Z2, and the connectors 35, 45 of the even-numbered annular sets 10B are also arranged in the axial directions Z1, Z2, which simplifies wiring.

[0076] According to the embodiment described above, by using FPCs 3 and 4 instead of lead wires, it is possible to simultaneously connect to a plurality of transducers 2, thereby reducing the number of steps required for connection. In addition, by using a structure in which the wave transmitting and receiving units 1 are combined, it is possible to reduce the number of steps required for assembly. Furthermore, it is possible to reduce the number of phase inspections.

[0077] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made by those skilled in the art.

[0078] Representative embodiments of the present invention will be listed below.

[0079] (1) One or more wave transmitting and receiving units are provided, Each of the wave transmitting and receiving units comprises: A sound absorbing member; a plurality of transducers arranged in an arc on the sound absorbing member, with their transmitting and receiving surfaces facing outward in a radial direction of the arc; a flexible substrate having a plurality of joints connected to a first connection surface of a pair of connection surfaces of the plurality of vibrators facing the arc-shaped axial direction; A transducer comprising:

[0080] (2) The flexible substrate is a main body; a plurality of arm portions provided with the plurality of joint portions and protruding outward in the arc-shaped radial direction from the main body portion; further comprising The transducer described in (1).

[0081] (3) The flexible substrate is a connector disposed on the main body portion, the connector having an insertion opening facing inward in the radial direction of the arcuate shape; (2) The transducer described above.

[0082] (4) Each of the wave transmitting and receiving units comprises: Further, another flexible substrate having a plurality of joints connected to a second connection surface of the pair of connection surfaces of the plurality of vibrators is provided. A transducer according to any one of (1) to (3).

[0083] (5) the sound absorbing member is in contact with the first connecting surface or the second connecting surface of the pair of connecting surfaces of the plurality of vibrators; A transducer according to any one of (1) to (4).

[0084] (6) the sound absorbing member is in contact with the first connection surfaces of the plurality of vibrators and the plurality of joints of the flexible substrate, or the second connection surfaces of the plurality of vibrators and the plurality of joints of the other flexible substrate; (4) A transducer as described above.

[0085] (7) Each of the wave transmitting and receiving units comprises: a holding member that is disposed on the opposite side of the sound absorbing member from the plurality of vibrators and that holds the sound absorbing member; A transducer according to any one of (1) to (6).

[0086] (8) Each of the wave transmitting and receiving units comprises: The present invention further includes a sound absorbing member that is disposed on the opposite side of the holding member from the sound absorbing member and is held by the holding member. (7) A transducer as described above.

[0087] (9) a plurality of the transceiver units including a circular set arranged in a circular shape; A transducer according to any one of (1) to (8).

[0088] (10) a plurality of said annular sets including axially stacked cylindrical sets; (9) The transducer described in (9).

[0089] (11) The plurality of transducers in two adjacent annular sets among the plurality of annular sets are arranged in a staggered manner. The transducer according to (10).

[0090] (12) The plurality of annular sets are stacked with spacers interposed therebetween. A transducer according to (10) or (11).

[0091] (13) Each of the wave transmitting and receiving units comprises: a connector disposed on the flexible substrate, the connector having an insertion opening facing radially inward; A transducer according to any one of (10) to (12).

[0092] (14) The connectors of two annular sets sandwiching one annular set among the plurality of annular sets are arranged in the axial direction. (13) A transducer as described in (13).

[0093] (15) a notch is formed in the arm portion of the flexible substrate between the base end connected to the main body portion and the joint portion; (2) The transducer described above.

[0094] (16) The flexible substrate is a first insulating layer; a second insulating layer; a conductor pattern disposed between the first insulating layer and the second insulating layer; and The joint has: a cutout that penetrates the first insulating layer facing the first connection surface of the vibrator and exposes a portion of the conductor pattern; a through hole penetrating the exposed portion of the conductor pattern and the second insulating layer; is formed, A transducer according to any one of (1) to (15).

[0095] (17) the joint portion of the flexible substrate is connected to the center of the first connection surface of the vibrator. A transducer according to any one of (1) to (16).

[0096] (18) An underwater detection device comprising a transducer according to any one of (1) to (17). [Explanation of symbols]

[0097] 1 Transmitting and receiving unit, 2 Transducer, 21 Transmitting and receiving surface, 22 Upper surface (first connecting surface), 23 Lower surface (second connecting surface), 3 Flexible printed circuit (FPC), 3a Insertion hole, 31 Main body, 32 Arm portion, 32a Cutout, 321 Base end, 322 Side extension portion, 323 Connection portion, 33 Joint portion, 33a Through hole, 35 Connector, 37 Coverlay, 37a Cutout, 38 Base material, 39 Conductive pattern, 4 Flexible printed circuit (FPC), 4a Insertion hole, 41 Main body, 42 Arm portion, 43 Joint portion, 45 Connector, 52, 53 Sound absorbing member, 6 Holding member, 6a Insertion hole, 7 Spacer, 7a Insertion hole, 71 Upper shaft portion, 72 Lower shaft portion, 10 Annular set, 100 Cylindrical set, 200 Underwater detection device, 201 control unit, 202 transmitting and receiving device, 203 transducer, 204 up / down device, 205 display unit, 206 operation unit

Claims

1. One or more wave transmitting and receiving units are provided, Each of the wave transmitting and receiving units comprises: A sound absorbing member; a plurality of transducers arranged in an arc on the sound absorbing member, with their transmitting and receiving surfaces facing outward in a radial direction of the arc; a flexible substrate having a plurality of joints connected to a first connection surface of a pair of connection surfaces of the plurality of vibrators facing the arc-shaped axial direction; A transducer comprising:

2. The flexible substrate is a main body; a plurality of arm portions provided with the plurality of joint portions and protruding outward in the arc-shaped radial direction from the main body portion; having 2. The transducer according to claim 1.

3. The flexible substrate is a connector disposed on the main body portion, the connector having an insertion opening facing inward in the radial direction of the arcuate shape; 3. The transducer according to claim 2.

4. Each of the wave transmitting and receiving units comprises: further comprising another flexible substrate having a plurality of joints connected to a second connection surface of the pair of connection surfaces of the plurality of vibrators; 2. The transducer according to claim 1.

5. the sound absorbing member is in contact with the first connection surface or the second connection surface of the pair of connection surfaces of the plurality of vibrators; 2. The transducer according to claim 1.

6. the sound absorbing member is in contact with the first connection surfaces of the plurality of vibrators and the plurality of joints of the flexible substrate, or the second connection surfaces of the plurality of vibrators and the plurality of joints of the other flexible substrate; 5. The transducer according to claim 4.

7. Each of the wave transmitting and receiving units comprises: a holding member that is disposed on the opposite side of the sound absorbing member from the plurality of vibrators and that holds the sound absorbing member; 2. The transducer according to claim 1.

8. Each of the wave transmitting and receiving units comprises: The present invention further includes a sound absorbing member that is disposed on the opposite side of the holding member from the sound absorbing member and is held by the holding member.

8. The transducer according to claim 7.

9. a plurality of the transceiver units including a circular set arranged in a circular shape; 2. The transducer according to claim 1.

10. a plurality of said annular sets including axially stacked cylindrical sets; The transducer according to claim 9.

11. the plurality of transducers in two adjacent annular sets among the plurality of annular sets are arranged in a staggered manner; The transducer according to claim 10.

12. The plurality of annular sets are stacked with spacers interposed therebetween. The transducer according to claim 10.

13. Each of the wave transmitting and receiving units comprises: a connector disposed on the flexible substrate, the connector having an insertion opening facing radially inward; The transducer according to claim 10.

14. The connectors of two annular sets sandwiching one annular set among the plurality of annular sets are arranged in the axial direction. The transducer according to claim 13.

15. a notch is formed in the arm portion of the flexible substrate between the base end connected to the main body portion and the joint portion; 3. The transducer according to claim 2.

16. The flexible substrate is a first insulating layer; a second insulating layer; a conductor pattern disposed between the first insulating layer and the second insulating layer; and The joint has: a cutout that penetrates the first insulating layer facing the first connection surface of the vibrator and exposes a portion of the conductor pattern; a through hole penetrating the exposed portion of the conductor pattern and the second insulating layer; is formed, 2. The transducer according to claim 1.

17. the joint portion of the flexible substrate is connected to the center of the first connection surface of the vibrator.

2. The transducer according to claim 1.

18. An underwater detection device comprising the transducer of claim 1.

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