CN217849670U

CN217849670U - High-connection-strength piezoelectric ceramic piece

Info

Publication number: CN217849670U
Application number: CN202221723539.6U
Authority: CN
Inventors: 李中英; 张朝俊; 高天
Original assignee: Wenzhou Ouxin Electronics Co ltd
Current assignee: Wenzhou Ouxin Electronics Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-11-18
Anticipated expiration: 2032-07-05

Abstract

The utility model belongs to the technical field of pronunciation of electron component and specifically relates to a piezoceramics piece that joint strength is high is related to, it is including body and electrode slice, the electrode slice presss from both sides the body in the centre, first through-hole has been seted up on the body, the second through-hole has been seted up on the electrode slice, it has same connecting rod to run through in first through-hole and the second through-hole, the both ends fixed connection of connecting rod is on the electrode slice. This application has the effect that makes body and electrode slice be difficult to separate.

Description

Piezoceramics piece that joint strength is high

Technical Field

The application relates to the field of electronic sound components, in particular to a piezoelectric ceramic piece with high connection strength.

Background

When voltage is applied to the piezoelectric ceramic piece, the piezoelectric ceramic piece generates mechanical deformation along with the change of the voltage and the frequency, and the mechanical deformation is vibration, so that sound is generated.

The piezoelectric ceramic sheet is usually pressed between two electrode sheets, one electrode sheet is a positive electrode, and the other electrode sheet is a negative electrode, so that current passes through the piezoelectric ceramic sheet to generate sound.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the piezoelectric ceramic piece produces sound, the produced vibration is easy to make the electrode slice adhered on the piezoelectric ceramic piece produce sound and break away.

SUMMERY OF THE UTILITY MODEL

The piezoelectric ceramic piece with high connection strength is provided in order to solve the problem that vibration generated after the piezoelectric ceramic piece is electrified easily causes the electrode plate bonded on the piezoelectric ceramic piece to generate sound and separate.

The application provides a piezoceramics piece that joint strength is high adopts following technical scheme:

the piezoelectric ceramic piece with high connection strength comprises a body and an electrode plate, wherein the electrode plate clamps the body in the middle, a first through hole is formed in the body, a second through hole is formed in the electrode plate, the same connecting rod penetrates through the first through hole and the second through hole, and two ends of the connecting rod are fixedly connected to the electrode plate.

Through adopting above-mentioned technical scheme, run through first through-hole and second through-hole through the connecting rod, and make the both ends of connecting rod pass through bonding, technology fixed connection such as welding is on the second through-hole inner wall of the electrode slice that is located the body both sides, come to fix the relative position of two electrode slices through the connecting rod, thereby make even fixed relation fracture between body and the electrode slice when because of the vibration of body, two electrode slices still can come the body to carry out the centre gripping through the connecting rod, thereby relative position between body and the electrode slice has played stabilizing effect, joint strength between body and the electrode slice has been strengthened.

Optionally, a clamping block is arranged at one end of the connecting rod, a pre-assembly is arranged at the other end of the connecting rod, the clamping block abuts against the outer side wall of the electrode plate, and the pre-assembly and the clamping block are used for clamping the electrode plate and the body in the middle.

Through adopting above-mentioned technical scheme, carry out the centre gripping with electrode slice and body through clamp splice and package to accomplish the pre-installation between electrode slice and the body, when making the staff fix the both ends of connecting rod on the electrode slice, reduced because of taking place the maloperation between electrode slice and the body and lead to fixed position to change or lead to being difficult to the probability fixed, make to bond or measure such as welding between connecting rod and the electrode slice when fixed more stable smooth and easy.

Optionally, a pre-assembly groove is formed in the end portion of the connecting rod, the pre-assembly comprises a pre-assembly block which slides in the pre-assembly groove, and the pre-assembly block is used for being in sliding abutting joint with the side wall of the electrode plate.

Through adopting above-mentioned technical scheme, when the connecting rod passed first through-hole and second through-hole and worn out, contradict on the electrode slice lateral wall through making pre-installation piece roll-off pre-installation groove, make pre-installation piece and clamp splice come electrode slice and body clamp in the centre to accomplished the pre-installation, made things convenient for staff's operation.

Optionally, the pre-assembly includes a spring disposed between an inner wall of the pre-assembly groove and a side wall of the pre-assembly block, and the spring extends and retracts in a direction in which the pre-assembly block slides out of the pre-assembly groove.

Through adopting above-mentioned technical scheme, when the connecting rod passed first through-hole and second through-hole and worn out, the pre-installation piece had been removed with the conflict of second through-hole inner wall, and the pre-installation piece will pop out from the pre-installation inslot under the spring action of spring this moment, has realized the auto-eject of pre-installation piece, has made things convenient for staff's operation greatly.

Optionally, a guide inclined surface is formed on the side wall of the pre-assembly block, the guide inclined surface is inclined in the direction in which the connecting rod is inserted into the second through hole, and the guide inclined surface is used for abutting against the inner wall of the second through hole and guiding the pre-assembly block to slide into the pre-assembly groove.

Through adopting above-mentioned technical scheme, when the connecting rod just will insert in the second through-hole, the guide inclined plane will be contradicted with second through-hole inner wall to make the pre-installation piece retreat to the pre-installation inslot under the guide of the slope lateral wall on guide inclined plane, realized that the pre-installation piece is automatic to retreat to the pre-installation inslot, further made things convenient for staff's operation.

Optionally, a conductive glue layer is arranged on the electrode sheet and used for being bonded to the body.

Through adopting above-mentioned technical scheme, the electrode slice bonds on the body through the conductive glue layer to further improve the firm nature of being connected between electrode slice and the body through the conductive glue layer, still come to play the cushioning effect to the vibration of body through the conductive glue layer simultaneously, alleviateed the influence that body vibration sound production caused the electrode slice, played the guard action to the electrode slice.

Optionally, a limiting block is arranged on the electrode plate, and a limiting groove for the limiting block to be inserted into so as to limit the rotation of the electrode plate is formed in the body.

Through adopting above-mentioned technical scheme, insert to the spacing inslot through the stopper, come to carry on spacingly to the electrode slice, when taking place relative rotation between electrode slice and the body, the stopper lateral wall will be inconsistent with spacing inslot wall to reduce the relative pivoted probability of taking place between electrode slice and the body, improved the stability when installing in advance between electrode slice and the body and installing.

Optionally, the inner wall of the second through hole is provided with a thread, the end of the connecting rod is provided with a thread matched with the thread on the inner wall of the second through hole, and the thread on the connecting rod and the clamping block are located at two ends of the connecting rod.

Through adopting above-mentioned technical scheme, after the connecting rod runs through first through-hole and second through-hole, rotate connecting rod tip and second through-hole that the connecting rod can pass through threaded connection for the electrode slice makes the electrode slice compress tightly on the body towards the direction displacement that is close to the clamp splice, thereby has realized preinstallation, convenient and fast.

In summary, the present application includes at least one of the following beneficial technical effects:

1. two electrode slices carry out the centre gripping through the connecting rod with the body to play the stabilizing effect to the relative position between body and the electrode slice, strengthened the joint strength between body and the electrode slice

2. Through carrying out the preinstallation earlier between body and the electrode slice, spacing body and the position relation between the electrode slice to the processing operation that goes on when having made things convenient for between body and the electrode slice to fix.

Drawings

Fig. 1 is a schematic view of the overall structure of a piezoceramic sheet with high bonding strength in example 1 of the present application.

Fig. 2 is a schematic view highlighting the exploded structure of the package.

Fig. 3 is a schematic view of the overall structure of a piezoelectric ceramic plate with high bonding strength in embodiment 2 of the present application.

Fig. 4 is an exploded view of the highlighted stopper.

FIG. 5 is an exploded view of the highlighted retaining groove.

Description of reference numerals: 1. a body; 2. an electrode sheet; 3. a first through hole; 4. a second through hole; 5. a connecting rod; 6. a clamping block; 7. pre-assembly; 8. pre-assembling a groove; 9. pre-assembling blocks; 10. a spring; 11. a guide ramp; 12. a conductive glue layer; 13. a limiting block; 14. a limiting groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment 1 of the application discloses a piezoceramics piece that joint strength is high. Referring to fig. 1 and 2, the piezoelectric ceramic piece with high connection strength includes a body 1 and two electrode plates 2, the body 1 is sandwiched by the two electrode plates 2, one electrode plate 2 is a positive electrode, the other electrode plate is a 2-position negative electrode, and conducting wires for conducting electricity are welded on the two electrode plates 2. Run through on the body 1 and seted up first through-hole 3, first through-hole 3 runs through along the thickness direction of body 1, and has all seted up second through-hole 4 on two electrode slices 2, and second through-hole 4 runs through along the thickness direction of

electrode slice

2, and 3 opening face diameters of first through-hole equal with 4 opening face diameters of second through-hole. Run through same connecting rod 5 in first through-hole 3 and the second through-hole 4, the laminating of contradicting with 3 inner walls of first through-hole and 4 inner walls of second through-hole is simultaneously gone here to connecting rod 5 lateral wall, and the both ends of connecting rod 5 are through welding or glue bonding difference fixed connection on two electrode slices 2.

Referring to fig. 2, a worker coats conductive glue on the side wall of the electrode plate 2 to form a conductive glue layer 12, and the conductive glue layer 12 is used for bonding the electrode plate 2 to the body 1.

Referring to fig. 1 and 2, a clamping block 6 is fixedly connected to one end of the connecting rod 5, and the diameter of the clamping block 6 is larger than that of the opening surface of the second through hole 4, so that the side wall of the clamping block 6 is abutted and attached to the outer side wall of the electrode plate 2 facing away from the body 1. The other end of the connecting rod 5 is provided with a pre-assembly 7, and the pre-assembly 7 and the clamping block 6 are used for clamping the electrode plate 2 and the body 1 in the middle.

Referring to fig. 1 and 2, a pre-assembly groove 8 is formed in the end portion of the connecting rod 5, the depth direction of the pre-assembly groove 8 extends along the direction perpendicular to the length direction of the connecting rod 5, the pre-assembly 7 comprises a pre-assembly block 9 sliding in the pre-assembly groove 8, the pre-assembly block 9 slides along the depth direction of the pre-assembly groove 8, the outer side wall of the pre-assembly block 9 is abutted and attached to the inner wall of the pre-assembly groove 8, the pre-assembly block 9 is used for being clamped on the side wall of the electrode plate 2 after sliding out of the pre-assembly groove 8, and the pre-assembly block 9 is abutted and clamped on the outer side wall of the electrode plate 2 back to the body 1 towards the side wall of the body 1.

Referring to fig. 1 and 2, the pre-assembly 7 includes a spring 10 installed between the inner wall of the pre-assembly groove 8 and the side wall of the pre-assembly block 9, one end of the spring 10 abuts against the bottom wall of the pre-assembly groove 8 facing the opening surface of the pre-assembly groove, the other end of the spring 10 abuts against the bottom wall of the pre-assembly block 9 facing away from the opening surface of the pre-assembly groove 8, and the spring 10 extends and contracts along the direction in which the pre-assembly block 9 slides out of the pre-assembly groove 8.

Referring to fig. 1 and 2, the side wall of the pre-assembly block 9 facing away from the body 1 is provided with a guide inclined surface 11, and the guide inclined surface 11 is inclined in the direction in which the connecting rod 5 is inserted into the second through hole 4, that is, when the pre-assembly block 9 is in a state of being ejected out of the pre-assembly slot 8, the position of the guide inclined surface 11 that is farther away from the opening surface of the pre-assembly slot 8 is closer to the electrode plate 2. The guide ramp 11 is intended to abut against the inner wall of the second through-hole 4 and to guide the pre-loading block 9 to slide into the pre-loading slot 8.

The implementation principle of the high piezoceramics piece of joint strength of this application embodiment does: when the worker needs to install the body 1 and the electrode plates 2, the worker can clamp the body 1 by the two electrode plates 2 in the middle, the first through hole 3 is communicated with the second through hole 4, the connecting rod 5 is inserted into the second through hole 4 and penetrates through the first through hole 3 to penetrate out of the other second through hole 4, when the connecting rod 5 is inserted, the guide inclined plane 11 on the preassembly block 9 is abutted to the inner wall of the second through hole 4, so that the preassembly block 9 retreats into the preassembly groove 8, when the connecting rod 5 penetrates out, the preassembly block 9 is ejected out of the preassembly groove 8 under the elastic force action of the spring 10, the electrode plates 2 are clamped in the middle by the preassembly block 9 towards the side wall of the body and the clamping block 6, the preassembly is realized, and the clamping block 6 and the connecting rod 5 can be welded to the electrode plates 2 at the moment, so that the installation of the electrode plates 2 and the body 1 is completed.

Example 2:

different with embodiment 1 is, refer to fig. 2 and 3 and fig. 4, a plurality of stoppers 13 of fixedly connected with on the lateral wall of electrode slice 2 orientation body 1, and a plurality of stoppers 13 are evenly distributed on electrode slice 2, offer on the body 1 lateral wall a plurality of be used for supplying stopper 13 to insert and carry out spacing groove 14, stopper 13 and spacing groove 14 one-to-one in order to realize electrode slice 2 rotation.

Referring to fig. 5, a thread is provided on the inner wall of the second through hole 4, a thread used for matching with a thread on the inner wall of the second through hole 4 is provided on the outer side wall of the end portion of the connecting rod 5 far away from the clamping block 6, the thread on the connecting rod 5 and the clamping block 6 are located at two ends of the connecting rod 5, and when the connecting rod 5 is inserted into the body 1 and the two electrode plates 2 in a penetrating manner, the thread on the connecting rod 5 matches with the thread on the inner wall of the second through hole 4 on the electrode plate 2 far away from the clamping block 6 to realize threaded connection.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a piezoceramics piece that joint strength is high, including body (1) and electrode slice (2), electrode slice (2) presss from both sides body (1) in the centre, its characterized in that: the electrode plate structure is characterized in that a first through hole (3) is formed in the body (1), a second through hole (4) is formed in the electrode plate (2), the first through hole (3) and the second through hole (4) penetrate through the same connecting rod (5), and two ends of the connecting rod (5) are fixedly connected to the electrode plate (2).

2. The piezoceramic sheet with high connection strength according to claim 1, wherein: be provided with clamp splice (6) on the one end tip of connecting rod (5), be provided with on the other end tip of connecting rod (5) package (7), clamp splice (6) are contradicted on electrode slice (2) lateral wall, package (7) and clamp splice (6) are used for pressing from both sides electrode slice (2) and body (1) in the centre.

3. The piezoceramic sheet with high connection strength according to claim 2, wherein: connecting rod (5) tip has been seted up on the tip and has been adorned groove (8) in advance, pre-installation piece (7) are including sliding pre-installation piece (9) in pre-installation groove (8), pre-installation piece (9) are used for sliding conflict joint on electrode slice (2) lateral wall.

4. The piezoceramics sheet with high connection strength of claim 3, wherein: the pre-assembly (7) comprises a spring (10) arranged between the inner wall of the pre-assembly groove (8) and the side wall of the pre-assembly block (9), and the spring (10) stretches along the direction that the pre-assembly block (9) slides out of the pre-assembly groove (8).

5. The piezoceramics sheet with high connection strength of claim 3, wherein: the side wall of the preassembly block (9) is provided with a guide inclined surface (11), the guide inclined surface (11) inclines along the direction that the connecting rod (5) is inserted into the second through hole (4), and the guide inclined surface (11) is used for abutting against the inner wall of the second through hole (4) and guiding the preassembly block (9) to slide into the preassembly groove (8).

6. The piezoceramic sheet with high connection strength according to claim 1, wherein: the electrode slice (2) is provided with a conductive glue layer (12), and the conductive glue layer (12) is used for being bonded on the body (1).

7. The high-joint-strength piezoceramic sheet according to claim 2, wherein: the electrode plate is characterized in that a limiting block (13) is arranged on the electrode plate (2), and a limiting groove (14) for the limiting block (13) to be inserted into so as to limit the rotation of the electrode plate (2) is formed in the body (1).

8. The piezoceramic sheet with high connection strength according to claim 7, wherein: the inner wall of the second through hole (4) is provided with threads, the end part of the connecting rod (5) is provided with threads matched with the threads on the inner wall of the second through hole (4), and the threads on the connecting rod (5) and the clamping block (6) are positioned at two ends of the connecting rod (5).