Oscillator structure of magnetostrictive transducer and assembly device

Abstract

The utility model provides an oscillator structure of a magnetostrictive transducer and an assembling device. The vibrator structure comprises a vibrator and a base structure; the base structure comprises two bases which are fixedly connected to the two sides of the vibrator respectively. The two ends, in the length direction of the bases, of the base structure are detachably provided with extrusion structures used for extruding the vibrator in the axial direction of the vibrator. The two bases located on the two sides of the vibrator are detachably connected through an extrusion structure so as to clamp the vibrator. And an exit channel of the extrusion structure is formed on the base.

Description

Technical Field

[0001] The utility model relates to a magnetostrictive transducer assembly device based on vibrator pre-compression, belonging to the technical field of magnetostrictive transducer assembly. Background Art

[0002] A magnetostrictive transducer is an electromechanical energy conversion device based on magnetostrictive materials (such as Terfenol-D) and is widely used in acoustics, precision drives, and other fields. Type IV flextensional transducers are the most widely used in practical applications. The core components of this type of magnetostrictive transducer include a cylindrical shell with an elliptical cross-section, a vibrator made of giant magnetostrictive material, and covers on either side of the cylindrical shell. The cylindrical shell and the covers on either side of the cylindrical shell are sealed together to form a sealed space that houses the vibrator. The cylindrical shell applies prestress to the vibrator and is fixed coaxially with the long axis of the cylindrical shell cross-section. The vibrator stretches and vibrates along the long axis of the cylindrical shell cross-section, thereby exciting the cylindrical shell to vibrate, and then emitting sound waves outward through the transmission of the external medium.

[0003] The assembly process of a magnetostrictive transducer is extremely important. The quality of the assembly directly affects various transducer performance parameters, such as resonant frequency, sound source level, impedance, mechanical quality factor, efficiency, etc. These parameters directly affect the output performance and working stability of the transducer. During the assembly of existing magnetostrictive transducers, pressure must be applied to the cylindrical shell to cause it to deform along the longitudinal axis, facilitating the insertion of the vibrator structure into the accommodating cavity formed on the inner side of the cylindrical shell. After the vibrator structure is pushed into the accommodating cavity, no pressure is applied to the cylindrical shell, resulting in an interaction force between the vibrator structure and the cylindrical shell, thereby causing the cylindrical shell to apply prestress to the vibrator. This assembly method causes the cylindrical shell to be subjected to excessive pressure, which can easily lead to deformation or damage of the cylindrical shell. A deformed or damaged cylindrical shell can seriously affect the performance of the magnetostrictive transducer. Utility Model Content

[0004] During assembly of existing magnetostrictive transducers, pressure must be applied to the cylindrical housing to push the vibrator structure into the accommodating cavity formed inside the cylindrical housing. This can cause excessive pressure on the cylindrical housing, leading to deformation or damage. The present utility model addresses this issue by providing a vibrator structure for a magnetostrictive transducer.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a vibrator structure of a magnetostrictive transducer, the vibrator structure including a vibrator and a base structure; the base structure including two bases fixedly connected to both sides of the vibrator, respectively, and the base structure having extrusion structures for extruding the vibrator in the axial direction of the vibrator detachably installed at both ends of the base in the length direction; the two bases located on both sides of the vibrator are detachably connected by the extrusion structure, thereby clamping the vibrator; an exit channel for the extrusion structure is formed on the base.

[0006] According to the above arrangement, the extrusion structure applies pressure to the vibrator in the axial direction, thereby squeezing the vibrator. This allows the size of the vibrator structure in the axial direction to adapt to the size of the accommodating cavity formed inside the cylindrical housing, thereby pushing the vibrator structure into the accommodating cavity formed inside the cylindrical housing. When the vibrator structure is accommodated in the corresponding accommodating cavity of the transducer housing, the extrusion structure is detachable and can be removed from the exit passage. This means that the vibrator is no longer subjected to axial compression. Due to the interaction between the vibrator structure and the transducer housing, the transducer housing can be used to apply prestress to the vibrator.

[0007] Furthermore, the extrusion structure includes a first screw, two first nuts that cooperate with the first screw and are correspondingly arranged, and the two first nuts are respectively arranged corresponding to the two bases; the base is provided with a first groove for accommodating the corresponding first nuts; the opening of the first groove faces the outside of the base; when the two bases are connected by the extrusion structure, the length direction of the first screw is parallel to the axial direction of the vibrator, the first screw extends into the first groove, thereby cooperating with the corresponding first nut, and the first nut abuts against the corresponding first groove wall, thereby squeezing the vibrator in the axial direction of the vibrator; the first groove forms an exit channel, and the opening of the first groove forms the outlet of the exit channel.

[0008] According to the above arrangement, the first nut can move along the length of the first screw when engaged with the first screw, thereby tightening the first nut and abutting the corresponding first groove wall to squeeze the vibrator. Furthermore, when the vibrator structure is installed in the corresponding accommodation cavity of the transducer, the first screw and the first vibrator can be removed through the exit channel.

[0009] Furthermore, the first groove includes a first groove section and a second groove section that are interconnected; the second groove section is located on the side of the first groove section away from the vibrator; the circumferential dimension of the second groove section is larger than the circumferential dimension of the first groove section; when the two bases are connected by an extrusion structure, the first screw extends into the first groove section and extends to the second groove section, thereby cooperating with the first nut accommodated in the second groove section, and the wall surface abutted by the first nut is the wall surface of the second groove section.

[0010] According to the above arrangement, the first section of the groove and the second section of the groove are respectively used to limit the first screw and the first nut, and by setting the above circumferential dimensions, a wall surface of the second section of the groove can be formed for the first nut to abut against, thereby squeezing the vibrator in the axial direction of the vibrator.

[0011] Furthermore, the size of the first nut in the axial direction of the vibrator is smaller than the size of the corresponding second section of the groove in the axial direction of the vibrator.

[0012] According to the above arrangement, the first nut has an operating space in the axial direction of the vibrator.

[0013] Furthermore, two extrusion structures are provided at each end of the base, and the two extrusion structures located at the same end of the base are spaced apart in the height direction of the base.

[0014] According to the above configuration, four symmetrically arranged extrusion structures are provided, thereby achieving a better extrusion effect on the vibrator, and extruding the size of the vibrator structure in the axial direction of the vibrator to a desired size.

[0015] Furthermore, the base includes a substrate and a magnetic base located on a side of the substrate facing the vibrator.

[0016] Based on the same concept, the present invention also provides an assembly device for a magnetostrictive transducer, comprising a transducer housing, an accommodating cavity formed on the inner side of the transducer housing, and openings at both ends of the accommodating cavity in the extension direction; the accommodating cavity is used to install the above-mentioned vibrator structure; the width of the accommodating cavity is less than a first dimension; when the vibrator is not squeezed in the axial direction of the vibrator, the dimension of the vibrator structure in the axial direction of the vibrator is the first dimension; when two bases are connected by the extrusion structure, the vibrator structure has at least a first state; when the vibrator structure is in the first state, the dimension of the vibrator structure in the axial direction of the vibrator is less than or equal to the width of the accommodating cavity; when the vibrator structure is installed in the accommodating cavity, the extension direction of the accommodating cavity is parallel to the length direction of the base, and the width direction of the accommodating cavity is parallel to the axial direction of the vibrator; the outlet of the exit channel is arranged towards the opening of the accommodating cavity.

[0017] According to the above arrangement, the width of the accommodating cavity is smaller than the first dimension. That is, when the vibrator is not squeezed, the width of the accommodating cavity is smaller than the corresponding axial dimension of the vibrator structure. Because the vibrator structure has a first state, the vibrator structure can be placed in the first state and installed in the accommodating cavity. Because the exit of the exit passage is arranged toward the opening of the accommodating cavity, the squeezing structure can be removed. That is, the vibrator is no longer squeezed in the axial direction. The rebounding vibrator can interact with the wall of the accommodating cavity, thereby applying prestress to the vibrator using the transducer housing.

[0018] Furthermore, the outer wall of the base is provided with a sliding portion, and the wall surface of the accommodating cavity is provided with a guiding portion that cooperates with the sliding portion.

[0019] According to the above arrangement, the cooperation between the sliding portion and the guide portion facilitates pushing the vibrator structure into the accommodating cavity.

[0020] Furthermore, the sliding portion is a protrusion formed on the outer wall of the base, and the guiding portion is a sliding groove formed on the wall surface of the accommodating cavity; or, the sliding portion is a sliding groove formed on the outer wall of the base, and the guiding portion is a protrusion formed on the wall surface of the accommodating cavity.

[0021] Furthermore, the transducer housing includes a cylindrical shell, and the accommodating cavity is formed on the inner side of the cylindrical shell; the transducer housing also includes a first cover plate and a second cover plate respectively used to seal the openings at both ends in the extension direction of the accommodating cavity; the first cover plate and the second cover plate are both detachably connected to the cylindrical shell.

[0022] Compared with the prior art, the present invention has the following advantages: To address the problems of deformation caused by applying pressure to the cylindrical shell and the complicated assembly process in the prior art, the present invention proposes an innovative solution, improving the structural design of the base. By providing a first groove corresponding to the base and a matching first screw and first nut, the first screw extends into the first groove and, in conjunction with the first nut, squeezes the vibrator in its axial direction, thereby pre-tightening the vibrator so that its size fits the cylindrical shell and can be accommodated in the accommodating cavity of the cylindrical shell, thus avoiding compression and deformation of the cylindrical shell. Because the extrusion structure is detachably connected to the base structure, the first screw and first nut can be removed through an exit channel, and the cylindrical shell provides appropriate prestress, avoiding direct pressure on the cylindrical shell and the problem of excessive pressure on the cylindrical shell during assembly of the magnetostrictive transducer in the prior art, which can easily lead to deformation or damage, thereby improving product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 Schematic diagram of the overall structure of a magnetostrictive transducer according to a specific embodiment of the present invention;

[0025] Figure 2 yes Figure 1 AA cross-sectional view of ;

[0026] Figure 3 This is a three-dimensional diagram of an assembly device for a magnetostrictive transducer viewed from one direction when the vibrator structure has not completely entered the accommodation cavity in a specific embodiment of the present invention;

[0027] Figure 4 yes Figure 3 An enlarged schematic diagram of the M portion;

[0028] Figure 5 This is a three-dimensional diagram of the assembly device of the magnetostrictive transducer viewed from another direction when the vibrator structure has not completely entered the accommodating cavity in a specific embodiment of the present invention;

[0029] Figure 6 yes Figure 3 A front view of a structure consisting of a cylindrical shell and a vibrator structure;

[0030] Figure 7 yes Figure 3 A schematic diagram of the three-dimensional structure of the cylindrical shell;

[0031] Figure 8 yes Figure 3 Schematic diagram of the three-dimensional structure of the oscillator structure;

[0032] Figure 9 yes Figure 8 BB cross-sectional diagram;

[0033] Figure 10 yes Figure 3 Schematic diagram of the three-dimensional structure of the base cover.

[0034] In the above drawings: 1. cylindrical shell; 2. first cover plate; 3. second cover plate; 4. second screw; 5. second groove; 6. substrate; 7. magnetic base; 8. base cover plate; 81. cover plate through hole; 9. coil; 10. vibrator; 101. magnetostrictive rod; 102. permanent magnet; 11. accommodating cavity; 12. guide hole; 13. first screw; 14. first nut; 15. first groove; 151. first section of groove; 152. second section of groove; 152A, wall of second section of groove; 16. sliding part; 17. guide part; 18. second nut; 20. sleeve; 30. extrusion structure; 40. transducer housing; 60. base; L1, axial direction of vibrator; L2, length direction of base; L3, height direction of base. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The utility model provides a vibrator structure of a magnetostrictive transducer, the vibrator structure comprising a vibrator 10 and a base structure; the base structure comprising two bases 60 respectively fixedly connected to both sides of the vibrator 10, and the base structure having an extrusion structure 30 detachably mounted on both ends of the base in the length direction L2 for extruding the vibrator 10 in the axial direction L1 of the vibrator; the two bases 60 located on both sides of the vibrator 10 are detachably connected via the extrusion structure 30, thereby clamping the vibrator 10; an exit channel for the extrusion structure 30 is formed on the base 60. The vibrator 10 comprises magnetostrictive rods 101 and permanent magnets 102 alternately arranged in the axial direction of the vibrator 10, such as Figure 2 shown.

[0037] like Figure 3-Figure 6 、 Figure 8 、 Figure 9 As shown, the extrusion structure 30 includes a first screw 13 and two first nuts 14 that mate with and correspond to the first screw 13. The two first nuts 14 are respectively arranged in correspondence with the two bases 60. The bases 60 are provided with first grooves 15 for accommodating the corresponding first nuts 14. The first grooves 15 open outward from the bases 60. When the two bases 60 are connected via the extrusion structure 30, the length of the first screw 13 is parallel to the axial direction L1 of the vibrator. The first screw 13 extends into the first groove 15, thereby mating with the corresponding first nuts 14. The first nuts 14 abut the walls of the corresponding first grooves 15, thereby squeezing the vibrator 10 in the axial direction L1 of the vibrator. The first grooves 15 form an exit channel, and the opening of the first grooves 15 forms the exit of the exit channel. The first grooves 15 provide an operating space for the first nuts 14, that is, a space for tightening the first nuts 14. It should be noted that the exit channel of the extrusion structure can be used to withdraw a portion of the extrusion structure or the entire structure. As long as part of the extrusion structure is withdrawn, the extrusion structure will not be able to squeeze the vibrator 10. For example, in this embodiment, only the first nut 14 can be withdrawn from the first groove 15, that is, the first screw remains in the transducer housing 40 (such as Figure 2 As shown), the first nut and the first screw can also be withdrawn from the first groove 15.

[0038] The first groove 15 includes a first groove section 151 and a second groove section 152, which are interconnected. The second groove section 152 is located on the side of the first groove section 151 away from the vibrator 10. The circumferential dimension of the second groove section 152 is larger than that of the first groove section 151. When the two bases 60 are connected via the extrusion structure 30, the first screw rod 13 extends into the first groove section 151 and into the second groove section 152, thereby engaging with the first nut 14 received in the second groove section 152. The first nut 14 abuts against the wall surface 152A of the second groove section. The openings of the first groove section 151 and the second groove section 152 form an exit for the first screw rod 13. The portion of the first screw rod 13 located between the two bases 60 is unobstructed, meaning that once the first screw rod 13 extends from the first groove 15, it can be removed. The opening of the second groove section 152 forms an exit for the first nut 14. The exit passage is the passage for removing the corresponding component.

[0039] The size of the first nut 14 in the vibrator axial direction L1 is smaller than the size of the corresponding groove second section 152 in the vibrator axial direction L1.

[0040] Two extrusion structures 30 are provided at each end of the base 60 , and the two extrusion structures 30 located at the same end of the base 60 are spaced apart in the height direction L3 of the base.

[0041] The base 60 includes a substrate 6 and a magnetic base 7 located on a side of the substrate 6 facing the vibrator 10 .

[0042] Based on the same concept, the present invention also provides an assembly device for a magnetostrictive transducer, comprising a transducer housing 40, wherein a housing 11 is formed within the housing 40, with openings at both ends of the housing 11 extending in the direction in which the transducer is mounted. The housing 11 is used to mount the vibrator structure described above. The extrusion structure 30 is used to compress the vibrator 10 from both sides in the vibrator axial direction L1, thereby compressing the vibrator structure in the vibrator axial direction L1 to a size suitable for insertion into the housing 11. The base length direction L2 is the extension direction of the base 60.

[0043] The width of the accommodating cavity 11 is smaller than the first size. When the vibrator 10 is not squeezed in the vibrator axial direction L1 , the size of the vibrator structure in the vibrator axial direction L1 is the first size.

[0044] When the two bases 60 are connected by the extrusion structure 30 , the vibrator structure has at least a first state; when the vibrator structure is in the first state, the size of the vibrator structure in the vibrator axial direction L1 is less than or equal to the width of the accommodating cavity 11 .

[0045] When the vibrator structure is installed in the accommodating cavity 11, the extension direction of the accommodating cavity 11 is parallel to the length direction L2 of the base, and the width direction of the accommodating cavity 11 is parallel to the axial direction L1 of the vibrator; the outlet of the exit channel is set towards the opening of the accommodating cavity 11.

[0046] The outer wall of the base 60 is provided with a sliding portion 16, and the wall surface of the accommodating cavity 11 is provided with a guide portion 17 that cooperates with the sliding portion 16. Figure 7 shown.

[0047] like Figure 3 As shown, the sliding portion 16 is a protrusion formed on the outer wall of the base 60, and the guide portion 17 is a sliding groove formed on the wall of the accommodating cavity 11; or, the sliding portion 16 is a sliding groove formed on the outer wall of the base 60, and the guide portion 17 is a protrusion formed on the wall of the accommodating cavity 11 (not shown in the figure).

[0048] The transducer housing 40 comprises a cylindrical shell 1, within which the accommodating chamber 11 is formed. The transducer housing 40 also includes a first cover plate 2 and a second cover plate 3, respectively, for sealing the openings at both ends of the accommodating chamber 11. Both the first cover plate 2 and the second cover plate 3 are detachably connected to the cylindrical shell 1. The cross-section of the cylindrical shell 1 perpendicular to the axis of the cylindrical shell 1 is elliptical. The width of the accommodating chamber 11 is parallel to the major axis of the elliptical cross-section. The accommodating chamber 11 extends parallel to the axis of the cylindrical shell 1. The base height L3 is parallel to the minor axis of the elliptical cross-section.

[0049] The following is a further detailed description of the present invention. To address shortcomings in existing magnetostrictive transducer assembly technology, the present invention provides a magnetostrictive transducer assembly device based on vibrator pre-compression. This assembly device utilizes a preloaded base and a removable screw design to achieve pressure-free assembly of the cylindrical housing. This ensures coaxiality between the vibrator and the cylindrical housing, preventing deformation or damage to the cylindrical housing and thus improving assembly quality. In the present invention, the magnetostrictive transducer can be a giant magnetostrictive transducer.

[0050] like Figures 1-10As shown, a magnetostrictive transducer assembly device based on vibrator pre-tightening includes a cylindrical housing 1 with an elliptical cross-section, a first cover plate 2, a second cover plate 3, a second screw 4, a second groove 5, a base plate 6, a magnetic base 7, a base cover plate 8, a coil 9, a sleeve 20, a magnetostrictive rod 101, a permanent magnet 102, a first screw 13, a first nut 14, a first groove 15, a sliding portion 16, a guide portion 17, and a second nut 18. The second groove 5 is used to accommodate a sealing ring. Four sets of first grooves 15 are symmetrically provided on the two base plates 6 of the vibrator. The first screw 13 extends into the first grooves 15, and the vibrator is pre-tightened by the first nut 14 to provide pre-tightening force. The first nut 14 can be operated using a conventional torque wrench.

[0051] In this utility model, the traditional magnetostrictive transducer base is replaced with a substrate 6 symmetrically provided with four sets of first grooves 15. Four first screws 13 and a first nut 14 are used to pre-compress the vibrator. After compressing the vibrator to the appropriate size, it can be pushed into the cylindrical housing 1 with an elliptical cross-section. The first screws 13 and first nuts 14 are then removed through the first grooves 15. The cylindrical housing 1 then provides prestress to the vibrator, avoiding direct pressure on the cylindrical housing. This overcomes the problem of excessive pressure on the cylindrical housing, which can easily lead to deformation or damage, and improves assembly efficiency and product reliability. The utility model has a scientific and reasonable structural design. The prestress between the vibrator and the cylindrical housing is applied by interference fit of the vibrator, ensuring that the magnetostrictive rod operates under a reasonable prestress.

[0052] In actual use, the magnetostrictive rod 101 and the permanent magnet 102 can be bonded together, and the coil can be wound around the outside of a sleeve 20 (which can be an aluminum sleeve). The bonded rod can then be placed into the sleeve 20 to ensure coaxiality. This completes the rod assembly. The magnetic base 7 can then be placed into the base plate 6 and secured with the base cover 8 to form the base. The assembled rod and base are passed through the first groove 15 via the first screw 13 and secured and pre-tightened with the first nut 14. After the dimensions are measured with a vernier caliper to ensure they are smaller than the internal longitudinal dimension of the cylindrical housing 1, tightening of the first nut 14 is stopped and the rod is pushed into the cylindrical housing, where the cylindrical housing provides the appropriate prestress. Depending on the actual width of the accommodating cavity 11, those skilled in the art will appreciate that the tightening of the two first nuts 14 can be adjusted to compress the vibrator structure in the vibrator axial direction L1 to a size suitable for insertion into the accommodating cavity 11, facilitating the insertion of the vibrator structure into the cylindrical housing and its accommodation within the accommodating cavity 11. In practice, the dimensions of the vibrator structure can also be measured using a conventional vernier caliper. By setting the extrusion structure 30 to be detachably installed, the extrusion structure 30 can be detached when the vibrator structure is located in the accommodating cavity 11 .

[0053] like Figure 10The figure shows a schematic structural diagram of the base cover plate 8. The base cover plate 8 is provided with a cover plate through hole 81 for accommodating the sleeve 20 and limiting the sleeve 20.

[0054] The first cover plate 2, the second cover plate 3, the second screw 4, the coil 9, the sleeve 20, the magnetostrictive rod 101, the permanent magnet 102, the first screw 13, the first nut 14 and the second nut 18 in the magnetostrictive transducer can all adopt structures of the existing technology.

[0055] As for how the nut moves along the length direction of the screw when it cooperates with the screw, how to push the extruded vibrator structure into the corresponding accommodating cavity, and how to remove the nut and screw from the exit channel are also contents understood by those skilled in the art and will not be repeated here.

[0056] The second screw 4 and the second nut 18 for fixing and pressing the first cover plate 2 and the second cover plate 3 may be subjected to a rust-proof coating treatment to prevent rust from affecting the assembly of the magnetostrictive transducer.

[0057] At least a portion of the opening of the first groove 15 can be arranged to be coaxial and parallel to the axis of the first screw 13. This allows the first screw 13 and the first nut 14 to be removed directly along the first groove 15 after the vibrator is inserted into the cylindrical housing 1, without disassembling the cylindrical housing, thereby improving assembly efficiency. At least a portion of the opening of the first groove can also be arranged to be perpendicular to the axis of the first screw 13. This allows the first screw and the first nut to be removed directly along the first groove after the vibrator is inserted into the cylindrical housing, without disassembling the cylindrical housing.

[0058] The inner wall of the cylindrical housing 1 can be provided with four guides 17 parallel to the housing axis. The sliding portion 16 can be a base protrusion, and the guides 17 can be through-grooves in the inner wall of the cylindrical housing. The depth of the through-grooves matches the base protrusions, and the grooves are symmetrically distributed along the circumference of the cylindrical housing to prevent assembly deviation and radial displacement of the vibrator. The surface roughness of the guides 17 can be set to a low level, and the grooves can be pre-lubricated with lubricant to reduce the coefficient of friction and facilitate the insertion and removal of the vibrator.

[0059] The second groove 5 on the cylindrical shell 1 can be coated with vaseline and then a sealing ring can be added. The second screw 4 passes through the symmetrical holes on the first cover plate 2 and the second cover plate 3. The second nut 18 can be tightened symmetrically with a torque wrench to fix and press the cover plates to ensure sealing. Figure 5 As shown, a guide hole 12 can be provided on the end surface of the cylindrical housing 1, and guide protrusions can be provided at corresponding positions of the first cover plate 2 and the second cover plate 3 to ensure that the first cover plate 2 and the second cover plate 3 are coaxial with the cylindrical housing 1. The first cover plate 2 and the second cover plate can be pressed and fixed together by the second screw 4 and the second nut 18, which facilitates disassembly and replacement of different cover plates.

[0060] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0061] The above describes the embodiments of the present invention in detail, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art should fall within the scope defined by the appended claims of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

Claims

1. A vibrator structure of a magnetostrictive transducer, the vibrator structure comprising a vibrator (10) and a base structure; the base structure comprising two bases (60) respectively fixedly connected to both sides of the vibrator (10), characterized in that: The base structure has detachably mounted on both ends in the base length direction (L2) an extrusion structure (30) for extruding the vibrator (10) in the vibrator axial direction (L1); Two bases (60) located on both sides of the vibrator (10) are detachably connected via an extrusion structure (30) to clamp the vibrator (10); An exit channel for the extrusion structure (30) is formed on the base (60); The extrusion structure (30) comprises a first screw (13), two first nuts (14) matched with the first screw (13) and arranged correspondingly, and the two first nuts (14) are arranged correspondingly to the two bases (60) respectively; the base (60) is provided with a first groove (15) for accommodating the corresponding first nut (14); the first groove (15) opens toward the outside of the base (60); the first groove (15) forms an exit channel, and the opening of the first groove (15) forms an outlet of the exit channel.

2. The oscillator structure according to claim 1, characterized in that: When the two bases (60) are connected via the extrusion structure (30), the length direction of the first screw (13) is parallel to the axial direction (L1) of the vibrator, the first screw (13) extends into the first groove (15), thereby cooperating with the corresponding first nut (14), and the first nut (14) abuts against the wall of the corresponding first groove (15), thereby squeezing the vibrator (10) in the axial direction (L1) of the vibrator.

3. The oscillator structure according to claim 2, characterized in that: The first groove (15) comprises a first groove section (151) and a second groove section (152) which are interconnected; the second groove section (152) is located on a side of the first groove section (151) away from the vibrator (10); the circumferential dimension of the second groove section (152) is greater than the circumferential dimension of the first groove section (151); When the two bases (60) are connected through the extrusion structure (30), the first screw (13) extends into the first section (151) of the groove and extends to the second section (152) of the groove, thereby cooperating with the first nut (14) accommodated in the second section (152) of the groove, and the wall surface abutted by the first nut (14) is the wall surface (152A) of the second section of the groove.

4. The oscillator structure according to claim 3, characterized in that: The size of the first nut (14) in the axial direction (L1) of the vibrator is smaller than the size of the corresponding second section (152) of the groove in the axial direction (L1) of the vibrator.

5. The oscillator structure according to claim 1, characterized in that: Two extrusion structures (30) are provided at each end of the base (60), and the two extrusion structures (30) located at the same end of the base (60) are spaced apart in a height direction (L3) of the base.

6. The oscillator structure according to any one of claims 1 to 5, characterized in that: The base (60) comprises a substrate (6) and a magnetic base (7) located on a side of the substrate (6) facing the vibrator (10).

7. An assembly device for a magnetostrictive transducer, comprising a transducer housing (40), wherein an accommodating cavity (11) is formed inside the transducer housing (40), and both ends of the accommodating cavity (11) in the extending direction thereof have openings; characterized in that: The accommodating cavity (11) is used for installing the vibrator structure according to any one of claims 1 to 6; The width of the accommodating cavity (11) is smaller than a first size; when the vibrator (10) is not squeezed in the vibrator axial direction (L1), the size of the vibrator structure in the vibrator axial direction (L1) is the first size; When the two bases (60) are connected via the extrusion structure (30), the vibrator structure has at least a first state; when the vibrator structure is in the first state, the size of the vibrator structure in the vibrator axial direction (L1) is less than or equal to the width of the accommodating cavity (11); When the vibrator structure is installed in the accommodating cavity (11), the extension direction of the accommodating cavity (11) is parallel to the length direction (L2) of the base, and the width direction of the accommodating cavity (11) is parallel to the axial direction (L1) of the vibrator; The outlet of the exit channel is arranged toward the opening of the accommodating cavity (11).

8. The assembly device according to claim 7, characterized in that: The outer wall of the base (60) is provided with a sliding portion (16), and the wall surface of the accommodating cavity (11) is provided with a guide portion (17) that cooperates with the sliding portion (16).

9. The assembly device according to claim 8, characterized in that: The sliding portion (16) is a protrusion formed on the outer wall of the base (60), and the guiding portion (17) is a sliding groove formed on the wall surface of the accommodating cavity (11); or, the sliding portion (16) is a sliding groove formed on the outer wall of the base (60), and the guiding portion (17) is a protrusion formed on the wall surface of the accommodating cavity (11).

10. The assembly device according to any one of claims 7 to 9, characterized in that: The transducer housing (40) comprises a cylindrical housing (1), wherein the accommodating cavity (11) is formed inside the cylindrical housing (1); The transducer housing (40) further comprises a first cover plate (2) and a second cover plate (3) respectively used for sealing the openings at both ends in the extension direction of the accommodating cavity (11); the first cover plate (2) and the second cover plate (3) are both detachably connected to the cylindrical housing (1).

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