Ceramic chip structure suitable for non-conductive stator

Abstract

The utility model is applicable to the technical field of piezoelectric ceramic wafers, and provides a ceramic wafer structure applicable to a non-conductive stator, which comprises a piezoelectric wafer, the piezoelectric wafer is provided with a front surface and a back surface, the front surface is a piezoelectric layer of the piezoelectric wafer, the back surface is a non-driving action area of the piezoelectric wafer, the front surface is provided with at least two different phases, and the back surface is provided with a non-driving action area of the piezoelectric wafer. An independent negative electrode is arranged on the front surface of each phase, each negative electrode is turned from the front surface to the back surface through a conductive adhesive, one end of each negative electrode is in contact with a piezoelectric layer of the piezoelectric wafer, and the other end of each negative electrode is arranged in a non-driving action area through a conductive adhesive so as to be grounded to separate each phase; different phases are arranged on the front face of the piezoelectric wafer, an independent negative electrode is arranged for each phase, the structural design is optimized, the functionality and efficiency of the piezoelectric wafer are improved, each negative electrode is turned over from the front face to the back face through the conductive adhesive and is grounded to separate each phase, electrical isolation is achieved, electrical interference between different phases is avoided, and the service life of the piezoelectric wafer is prolonged. And driving of a non-common-ground and non-conductive stator can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of piezoelectric ceramic chips, and in particular relates to a ceramic sheet structure suitable for a non-conductive stator. Background Art

[0002] Existing wave-shaped piezoelectric ceramic chips utilize the conductivity of the metal stator to bond the negative electrode to the stator elastomer, then lead the negative electrode out of the stator elastomer to form a circuit. This existing ceramic chip structure is no longer suitable when the stator is made of a non-conductive material or has a non-conductive coating or insulating layer on the surface, or when the negative electrodes of multiple phases cannot share a common ground and need to be driven separately.

[0003] Therefore, the prior art has defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings in the prior art that multi-phase negative poles cannot share a common ground and need to be driven separately, and to provide a ceramic sheet structure suitable for a non-conductive stator.

[0005] The present utility model is implemented as follows: a ceramic sheet structure suitable for a non-conductive stator includes a piezoelectric chip, the piezoelectric chip having a front side and a back side, the front side being the piezoelectric layer of the piezoelectric chip, the back side being the non-driving action area of the piezoelectric chip, at least two different phases being provided on the front side, each phase being provided with an independent negative electrode on the front side, each of the negative electrodes being flipped from the front side to the back side through a conductive adhesive, one end of the negative electrode being in contact with the piezoelectric layer of the piezoelectric chip, and the other end being arranged in the non-driving action area through a conductive adhesive to separate each phase by grounding.

[0006] Furthermore, each of the negative electrodes is connected to an external circuit via an independent conductive path.

[0007] Furthermore, an electrode lead is provided on the reverse side of the piezoelectric wafer for transmitting electrical signals from the piezoelectric layer to an external circuit.

[0008] Furthermore, the reverse side of the piezoelectric wafer is coated with a non-conductive protective layer.

[0009] Furthermore, the front surface of the piezoelectric chip is also provided with a positive electrode corresponding to the negative electrode of each phase.

[0010] Furthermore, the conductive glue is silver glue.

[0011] The utility model provides a ceramic sheet structure suitable for a non-conductive stator. By arranging at least two different phases on the front side of the piezoelectric chip and arranging an independent negative electrode for each phase, the structural design is optimized and the functionality and efficiency of the piezoelectric chip are improved. Each negative electrode is flipped from the front side to the back side through conductive glue and grounded to separate each phase, thereby achieving electrical isolation, avoiding electrical interference between different phases, and being able to drive a non-conductive stator with a different ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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 work.

[0013] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0014] Figure 1 The utility model provides a structural schematic diagram of a ceramic sheet structure suitable for a non-conductive stator.

[0015] Figure 2 This is a front structural schematic diagram of a ceramic sheet structure suitable for a non-conductive stator provided by the utility model.

[0016] Figure 3 This is a schematic diagram of the reverse structure of a ceramic sheet structure suitable for a non-conductive stator provided by the utility model.

[0017] Explanation of the accompanying figures: 1. Piezoelectric chip; 2. Negative electrode. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] See also Figure 1-Figure 3The utility model discloses a ceramic sheet structure suitable for a non-conductive stator, comprising a piezoelectric chip 1, which can be made of a high-purity piezoelectric material. The piezoelectric chip 1 has a front side and a back side. The front side is the piezoelectric layer of the piezoelectric chip 1, and the back side is the non-driving area of the piezoelectric chip 1. Furthermore, to protect the back side of the piezoelectric chip 1 from the external environment, the back side of the piezoelectric chip 1 is coated with a non-conductive protective layer. This protective layer can be made of plastic, rubber, or other non-conductive materials.

[0020] At least two different phases are provided on the front side, and each phase can be used for different functions or applications according to production requirements. For example, the front side can be divided into a driving phase and a sensing phase, etc. Each phase is provided with an independent negative electrode 2 on the front side. Each phase may have different piezoelectric properties, so independent electrodes are required to achieve optimal performance. And each of the negative electrodes 2 is only in contact with the piezoelectric layer of the corresponding phase and is not connected to the piezoelectric layers of other phases. Furthermore, the front side of the piezoelectric chip 1 is also provided with a positive electrode corresponding to the negative electrode 2 of each phase. The material and design of the positive electrode should match the negative electrode 2 to ensure the integrity and symmetry of the circuit.

[0021] Each of the negative electrodes 2 is flipped from the front side to the back side through conductive glue. One end of the negative electrode 2 contacts the piezoelectric layer of the piezoelectric chip 1, and the other end is arranged in the non-driving area through conductive glue. That is, the conductive glue fixes one end of the negative electrode 2 on the piezoelectric layer, and the other end extends to the non-driving area of the piezoelectric chip 1 to achieve electrical isolation and separate each phase by grounding. After curing, the conductive glue will form a stable electrical connection and form electrical isolation between the negative electrode 2 and the non-conductive stator. The conductive glue not only provides electrical connection, but also plays a role in physical isolation. The conductive glue is preferably silver glue because silver glue has good conductivity and adhesion. On the back side of the piezoelectric chip 1, the non-driving area is used to arrange the other end of the negative electrode 2 extending through the conductive glue. This area does not participate in the piezoelectric effect and can therefore be safely used as an electrically isolated grounding point.

[0022] Each of the negative electrodes 2 is connected to an external circuit via an independent conductive path. These conductive paths can be conductive glue, conductive wire, or other conductive materials to ensure stable transmission of electrical signals while avoiding electrical interference between different phases. Electrode leads are provided on the reverse side of the piezoelectric wafer 1 to transmit electrical signals from the piezoelectric layer to an external circuit. The electrode leads are arranged on the reverse side of the piezoelectric wafer 1 to ensure electrical connection between the electrode leads and the piezoelectric layer. The lead positions should avoid conflict with the negative electrodes 2 or other sensitive areas.

[0023] By arranging at least two different phases on the front side of the piezoelectric chip 1 and arranging an independent negative electrode 2 for each phase, more efficient space utilization can be achieved by rationally arranging the multi-phase negative electrodes 2 within a limited space, thereby improving the functionality and efficiency of the piezoelectric chip 1. Each of the negative electrodes 2 is flipped from the front side to the back side through conductive glue and grounded to separate each phase, thereby achieving electrical isolation, avoiding electrical interference between different phases, and enabling driving of non-common-ground, non-conductive stators.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ceramic sheet structure suitable for a non-conductive stator, characterized by: The invention comprises a piezoelectric chip (1), wherein the piezoelectric chip (1) has a front side and a back side, wherein the front side is the piezoelectric layer of the piezoelectric chip (1), and the back side is the non-driving action area of the piezoelectric chip (1), at least two different phases are provided on the front side, and each phase is provided with an independent negative electrode (2) on the front side, and each negative electrode (2) is turned from the front side to the back side through conductive glue, one end of the negative electrode (2) is in contact with the piezoelectric layer of the piezoelectric chip (1), and the other end is arranged in the non-driving action area through conductive glue to separate each phase by grounding.

2. The ceramic sheet structure suitable for a non-conductive stator according to claim 1, characterized in that: Each of the negative electrodes (2) is connected to an external circuit via an independent conductive path.

3. The ceramic sheet structure suitable for a non-conductive stator according to claim 2, characterized in that: The reverse side of the piezoelectric wafer (1) is provided with an electrode lead-out for transmitting an electrical signal from the piezoelectric layer to an external circuit.

4. The ceramic sheet structure suitable for a non-conductive stator according to claim 1, characterized in that: The reverse side of the piezoelectric wafer (1) is coated with a non-conductive protective layer.

5. The ceramic sheet structure suitable for a non-conductive stator according to claim 1, characterized in that: The front surface of the piezoelectric chip (1) is also provided with a positive electrode corresponding to the negative electrode (2) of each phase.

6. The ceramic sheet structure suitable for a non-conductive stator according to claim 1, characterized in that: The conductive glue is silver glue.

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