A piezoelectric ceramic displacement amplifier

Abstract

The utility model provides a piezoelectric ceramic displacement amplifier relates to piezoelectric ceramic technical field, including bottom plate, still include: displacement amplification subassembly, displacement amplification subassembly includes the mobile seat of sliding connection on bottom plate, the one side of mobile seat near top is connected with support rod, is provided with telescopic spring on support rod, in the utility model, piezoelectric ceramic produces micro -displacement after electrification, and promotes fixed frame, and fixed frame drives mounting plate through bolt, and the bottom ball of mounting plate rotates in the movable ball groove of fixed block, makes mounting plate with ball as fulcrum rotation, and mounting plate extrudes support plate when rotating, and support plate compresses or stretches telescopic spring, and support rod drives mobile seat to slide, and the elasticity of telescopic spring provides reverse force for mounting plate, guarantees transmission stability, and the cooperation of ball and ball groove lets mounting plate can rotate flexibly, and the micro -displacement of piezoelectric ceramic is converted into the larger displacement of mobile seat, realizes stable displacement transmission, makes piezoelectric ceramic micro -displacement amplification.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric ceramic technology, and in particular to a piezoelectric ceramic displacement amplifier. Background Technology

[0002] A piezoelectric ceramic displacement amplifier is a device that amplifies displacement using the piezoelectric effect. Piezoelectric ceramic materials can deform under the action of an electric field, thereby driving mechanical motion. The amplifier is widely used in precision machinery, micro-displacement detection and control, and its advantages include high precision, high response speed and no mechanical friction. Therefore, it has important application value in various high-precision control systems.

[0003] However, in practical use, the following shortcomings still exist. For example, existing piezoelectric ceramic displacement amplifiers cannot achieve stable displacement transmission to amplify the micro-displacement of piezoelectric ceramics. Unstable displacement transmission will lead to a nonlinear relationship between the output displacement and the input voltage. Especially in scenarios requiring high-precision positioning, this will introduce large errors and reduce the control accuracy of the system. Piezoelectric ceramics themselves have hysteresis and creep effects. If the displacement amplifier cannot effectively compensate for or suppress these characteristics, it will lead to the accumulation of positioning errors, affecting the dynamic response and stability of the system. Unstable displacement transmission may cause excessive wear or fatigue of mechanical parts, especially under high-frequency cyclic loading, which will significantly shorten the life of the equipment.

[0004] Therefore, this invention proposes a piezoelectric ceramic displacement amplifier to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a piezoelectric ceramic displacement amplifier.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a piezoelectric ceramic displacement amplifier, including a base plate, and further comprising: A displacement amplification assembly includes a movable seat slidably connected to a base plate, a support rod connected to the top side of the movable seat, a telescopic spring provided on the support rod, a support plate provided at the other end of the telescopic spring, and a fixing block connected to the top of the support plate. The mounting assembly includes a mounting plate disposed on a fixed block, a ball connected to the bottom of the mounting plate near the fixed block, a movable ball groove on the fixed block, the ball being disposed in the movable ball groove, a piezoelectric ceramic on the mounting plate, a fixing frame on the piezoelectric ceramic, and a bolt threadedly connected to the fixing frame, the bolt being threadedly connected to the mounting plate.

[0007] Furthermore, a first limiting block is connected to the base plate, and the movable seat is slidably connected to the first limiting block.

[0008] The beneficial effects of adopting the above-mentioned further solution are: the first limiting block on the base plate provides a sliding track for the moving seat. When the moving seat slides under force, the first limiting block restricts its offset, ensuring that it moves in the predetermined direction and avoiding the impact of displacement transmission accuracy due to deviation in the sliding direction, thus laying the foundation for the stability of subsequent displacement amplification.

[0009] Furthermore, a connecting block is connected to the support rod, and one end of the telescopic spring is connected to the connecting block.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the connecting block on the support rod is the fixed point of one end of the telescopic spring. When the support plate is subjected to force, the telescopic spring is connected to the support rod through the connecting block, so that the telescopic force of the telescopic spring can act stably on the support rod, ensuring that the force is not lost in the transmission and maintaining the continuity of force transmission.

[0011] Furthermore, a connecting plate is connected to the support plate, and the other end of the telescopic spring is connected to the connecting plate.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the connecting plate on the support plate is used to fix the other end of the telescopic spring. When the support plate is squeezed or stretched, the connecting plate transmits the force to the telescopic spring, allowing the spring to extend and retract in an orderly manner. At the same time, the connecting plate makes the connection between the telescopic spring and the support plate more secure, preventing the feedback of the impact of the telescopic spring falling off.

[0013] Furthermore, a limiting groove is connected to the side of the support plate near the movable seat.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the limiting groove on the support plate cooperates with the second limiting block of the moving seat. When the support plate moves, the limiting groove slides in the second limiting block, restricting the movement direction of the support plate, preventing it from shaking, ensuring that the force exerted by the support plate on the telescopic spring is stable, and ensuring accurate force transmission.

[0015] Furthermore, a second limiting block is provided on the side of the movable seat near the limiting groove, and the limiting groove is slidably connected in the second limiting block.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the second limiting block of the movable seat provides sliding guidance for the limiting groove of the support plate. When the support plate drives the limiting groove to move, the second limiting block constrains the movement trajectory of the limiting groove, prevents the support plate from deviating, makes the force transmission between the support plate and the movable seat more stable, and improves the overall structural reliability.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, the piezoelectric ceramic generates a micro-displacement after being energized, which pushes the fixing frame. The fixing frame drives the mounting plate through bolts. The ball at the bottom of the mounting plate rotates in the movable ball groove of the fixing block, causing the mounting plate to rotate around the ball as a fulcrum. When the mounting plate rotates, it presses against the support plate. The support plate compresses or stretches the telescopic spring, and the support rod drives the moving seat to slide. The elastic force of the telescopic spring provides a reverse force to the mounting plate, ensuring stable transmission. The cooperation between the ball and the ball groove allows the mounting plate to rotate flexibly, converting the micro-displacement of the piezoelectric ceramic into a larger displacement of the moving seat, realizing stable displacement transmission, and amplifying the micro-displacement of the piezoelectric ceramic. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a piezoelectric ceramic displacement amplifier according to the present invention; Figure 2 This is a structural disassembly diagram of a piezoelectric ceramic displacement amplifier according to the present invention; Figure 3 This is a schematic diagram of the displacement amplification component structure of a piezoelectric ceramic displacement amplifier according to the present invention; Figure 4 This is a schematic diagram showing the disassembly of the displacement amplification component of a piezoelectric ceramic displacement amplifier according to this utility model; Figure 5 This is a schematic diagram of the mounting assembly structure of a piezoelectric ceramic displacement amplifier according to the present invention.

[0019] Figure label: 1. Base plate; 2. Displacement amplification component; 21. First limiting block; 22. Movable seat; 23. Support rod; 24. Connecting block; 25. Connecting plate; 26. Telescopic spring; 27. Support plate; 28. Limiting groove; 29. ​​Second limiting block; 210. Fixing block; 3. Mounting components; 31. Mounting plate; 32. Sphere; 33. Movable ball groove; 34. Piezoelectric ceramic; 35. Fixing bracket; 36. Bolts. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 - Figure 5 As shown, this embodiment provides a technical solution: a piezoelectric ceramic displacement amplifier, including a base plate 1, and further comprising: The displacement amplification component 2 includes a movable seat 22 slidably connected to the base plate 1. A support rod 23 is connected to the side of the movable seat 22 near the top. A telescopic spring 26 is provided on the support rod 23. A support plate 27 is provided at the other end of the telescopic spring 26. A fixing block 210 is connected to the top of the support plate 27. Mounting component 3 includes a mounting plate 31 mounted on a fixed block 210. A ball 32 is connected to the bottom of the mounting plate 31 near the fixed block 210. A movable ball groove 33 is provided on the fixed block 210, and the ball 32 is placed in the movable ball groove 33. A piezoelectric ceramic 34 is mounted on the mounting plate 31, and a fixing frame 35 is mounted on the piezoelectric ceramic 34. A bolt 36 is threaded onto the fixing frame 35 and threaded onto the mounting plate 31. When the piezoelectric ceramic 34 is energized, it generates a slight displacement, pushing the fixing frame 35. The fixing frame 35 then drives the mounting plate 31 via the bolt 36. The ball 32 at the bottom of the mounting plate 31 rotates within the movable ball groove 33 of the fixed block 210, causing the mounting plate 31 to rotate around the ball 32 as a fulcrum. When the mounting plate 31 rotates, it presses against the support plate 27. The support plate 27 compresses or stretches the telescopic spring 26. The support rod 23 drives the sliding seat 22 to slide. The elastic force of the telescopic spring 26 provides a reverse force to the mounting plate 31, ensuring stable transmission. The cooperation between the ball 32 and the ball groove allows the mounting plate 31 to rotate flexibly, converting the micro-displacement of the piezoelectric ceramic 34 into a larger displacement of the moving seat 22, realizing stable displacement transmission, and amplifying the micro-displacement of the piezoelectric ceramic 34.

[0022] The above solutions still have the problem that, even with the amplification of the 34 displacement of the piezoelectric ceramic, the accuracy of force transmission cannot be guaranteed to improve the overall structural reliability. Figure 1 - Figure 4As shown: A first limiting block 21 is connected to the base plate 1, and a movable seat 22 is slidably connected to the first limiting block 21. The first limiting block 21 on the base plate 1 provides a sliding track for the movable seat 22. When the movable seat 22 slides under force, the first limiting block 21 restricts its offset, ensuring that it moves in a predetermined direction and avoiding the impact of displacement transmission accuracy due to deviation in the sliding direction. This lays the foundation for the stability of subsequent displacement amplification. A connecting block 24 is connected to the support rod 23, and one end of the telescopic spring 26 is connected to the connecting block 24. The connecting block 24 on the support rod 23... Connecting block 24 is the fixing point of one end of the telescopic spring 26. When the support plate 27 is under force, the telescopic spring 26 is connected to the support rod 23 through connecting block 24, so that the telescopic force of the telescopic spring 26 can act stably on the support rod 23, ensuring that the force is not lost during transmission and maintaining the continuity of force transmission. A connecting plate 25 is connected to the support plate 27, and the other end of the telescopic spring 26 is connected to the connecting plate 25. The connecting plate 25 on the support plate 27 is used to fix the other end of the telescopic spring 26. When the support plate 27 is compressed or stretched, the connecting plate 25... The force is transmitted to the telescopic spring 26, allowing the spring to extend and retract in an orderly manner. Simultaneously, the connecting plate 25 makes the connection between the telescopic spring 26 and the support plate 27 more secure, preventing the telescopic spring 26 from falling off and causing feedback. A limiting groove 28 is connected to the side of the support plate 27 near the movable seat 22. The limiting groove 28 on the support plate 27 cooperates with the second limiting block 29 of the movable seat 22. When the support plate 27 moves, the limiting groove 28 slides within the second limiting block 29, restricting the direction of movement of the support plate 27, preventing it from wobbling, and ensuring the support plate 27 effectively extends and retracts. The spring 26 provides stable force and ensures accurate force transmission. A second limiting block 29 is provided on the side of the movable seat 22 near the limiting groove 28. The limiting groove 28 is slidably connected in the second limiting block 29. The second limiting block 29 of the movable seat 22 provides sliding guidance for the limiting groove 28 of the support plate 27. When the support plate 27 moves the limiting groove 28, the second limiting block 29 constrains the movement trajectory of the limiting groove 28, preventing the support plate 27 from deviating. This makes the force transmission between the support plate 27 and the movable seat 22 more stable and improves the overall structural reliability.

[0023] like Figure 1 - Figure 5 As shown: First, the piezoelectric ceramic 34 is mounted on the mounting plate 31 and fixed by the fixing bracket 35 and bolts 36. The slight displacement generated by its energization pushes the fixing bracket 35, which in turn drives the mounting plate 31 to move via the bolts 36. The sphere 32 at the bottom of the mounting plate 31 is embedded in the movable ball groove 33 of the fixing block 210, forming a rotation fulcrum, allowing the mounting plate 31 to rotate flexibly around the sphere 32. When the mounting plate 31 rotates, it compresses or pulls the support plate 27. The support plate 27 transmits force to the telescopic spring 26 through the connecting plate 25. One end of the telescopic spring 26 is fixed to the support rod 23 via the connecting block 24. Under force, it undergoes compression or tension deformation, and its elastic force provides a counterforce to the mounting plate 31, ensuring force balance and stability during transmission. Simultaneously… The limiting groove 28 on the support plate 27 slides with the second limiting block 29 of the movable seat 22, limiting the movement direction of the support plate 27 and avoiding force transmission deviation. The support rod 23 transmits the force of the telescopic spring 26 to the movable seat 22. The movable seat 22 slides along the first limiting block 21 of the base plate 1. The first limiting block 21 ensures that the movable seat 22 moves along the predetermined trajectory and prevents sliding deviation from affecting the displacement accuracy. In this process, the rotation of the mounting plate 31 is converted into the linear sliding of the movable seat 22 through the support rod 23. The flexible cooperation between the ball 32 and the movable ball groove 33 and the elastic feedback of the telescopic spring 26 work together to amplify the micro displacement of the piezoelectric ceramic 34 into the larger displacement of the movable seat 22, realizing high-precision and stable displacement amplification transmission.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A piezoelectric ceramic displacement amplifier, comprising a base plate (1), characterized in that, Also includes: The displacement amplification assembly (2) includes a movable seat (22) slidably connected to the base plate (1), a support rod (23) connected to the side of the movable seat (22) near the top, a telescopic spring (26) provided on the support rod (23), a support plate (27) provided at the other end of the telescopic spring (26), and a fixing block (210) connected to the top of the support plate (27). The mounting assembly (3) includes a mounting plate (31) disposed on a fixed block (210). A ball (32) is connected to the bottom of the mounting plate (31) near the fixed block (210). A movable ball groove (33) is provided on the fixed block (210). The ball (32) is disposed in the movable ball groove (33). A piezoelectric ceramic (34) is disposed on the mounting plate (31). A fixing frame (35) is disposed on the piezoelectric ceramic (34). A bolt (36) is threadedly connected to the fixing frame (35). The bolt (36) is threadedly connected to the mounting plate (31).

2. The piezoelectric ceramic displacement amplifier according to claim 1, characterized in that: A first limiting block (21) is connected to the base plate (1), and the movable seat (22) is slidably connected to the first limiting block (21).

3. The piezoelectric ceramic displacement amplifier according to claim 1, characterized in that: A connecting block (24) is connected to the support rod (23), and one end of the telescopic spring (26) is connected to the connecting block (24).

4. The piezoelectric ceramic displacement amplifier according to claim 1, characterized in that: A connecting plate (25) is connected to the support plate (27), and the other end of the telescopic spring (26) is connected to the connecting plate (25).

5. A piezoelectric ceramic displacement amplifier according to claim 1, characterized in that: A limiting groove (28) is connected to the side of the support plate (27) near the movable seat (22).

6. A piezoelectric ceramic displacement amplifier according to claim 1, characterized in that: A second limiting block (29) is provided on the side of the movable seat (22) near the limiting groove (28), and the limiting groove (28) is slidably connected in the second limiting block (29).

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