Combined quartz plate three-dimensional force piezoelectric sensor

Abstract

The invention relates to a combined quartz plate three-dimensional force piezoelectric sensor which comprises a pressing block assembly, a pressed assembly and a bearing assembly. The pressing block assembly is in sliding connection with the bearing assembly, and the pressed assembly is arranged between the pressing block assembly and the bearing assembly; the pressed assembly comprises quartz groups and electrode plates, the quartz groups and the electrode plates are laminated in a manner that one quartz group and one electrode plate are laminated, and each quartz group is composed of a plurality of quartz plates. Through the sliding connection design of the pressing block assembly and the bearing assembly, the sensor can sensitively respond to external force in all directions; the pressed assembly adopts an alternating laminated structure of quartz groups and electrode plates, the sensitivity and the measurement precision are improved, each quartz group consists of a plurality of quartz plates, so that mechanical stress is dispersed on the plurality of quartz plates, and the problem that the mechanical stress is concentrated on a single quartz block of the piezoelectric sensor in the pressed process of the piezoelectric sensor is solved. At the moment, the quartz block is easy to damage, the piezoelectric sensor cannot work, and the stability is poor.

Description

Technical Field

[0001] The present application relates to the technical field of piezoelectric sensors, and in particular to a combined quartz plate three-dimensional force piezoelectric sensor. Background Art

[0002] With the development of industrial automation and intelligence, sensor technology has been widely used in various fields. Among them, piezoelectric sensors play an important role in the measurement of force, pressure, acceleration, etc. due to their high sensitivity, fast response speed, simple structure and other advantages. Especially in high-end application fields such as precision machinery, aerospace, engineering survey, etc., three-dimensional force piezoelectric sensors, as a sensor that can simultaneously detect forces in three-dimensional directions in space, have broad application prospects.

[0003] Among the related technical means, three-dimensional force piezoelectric sensors that use quartz blocks as detection elements are more common. Such sensors usually achieve three-dimensional force detection by implanting electrodes on the quartz block and applying external forces at both ends. This design can better convert the three-dimensional force applied by the outside world into electrical signals, and then accurately measure the magnitude and direction of the external force through the signal processing module.

[0004] Regarding the above technical solution, although accurate detection of three-dimensional force can be achieved by using a quartz block as a detection element, when the piezoelectric sensor is under pressure, the mechanical stress will be concentrated on a single quartz block of the piezoelectric sensor. At this time, the quartz block is prone to damage, which will cause the piezoelectric sensor to fail to work and have a problem of poor stability. Summary of the invention

[0005] In order to improve the problem that when the piezoelectric sensor is under pressure, the mechanical stress will be concentrated on a single quartz block of the piezoelectric sensor. At this time, the quartz block is easily damaged, and the piezoelectric sensor cannot work and has poor stability, the present application provides a combined quartz plate three-dimensional force piezoelectric sensor.

[0006] The present application provides a combined quartz plate three-dimensional force piezoelectric sensor, comprising a pressure block assembly, a pressure-bearing assembly and a load-bearing assembly; the pressure block assembly is slidably connected to the load-bearing assembly, and the pressure-bearing assembly is arranged between the pressure block assembly and the load-bearing assembly; the pressure-bearing assembly comprises a quartz group and an electrode sheet, and the quartz group and the electrode sheet are stacked in a layer of the quartz group and the electrode sheet; wherein the quartz group is composed of a plurality of quartz sheets.

[0007] As a preferred embodiment, the pressure block assembly includes a connecting block, a pressure plate and a connecting pin, wherein the pressure plate is connected to one end face of the connecting block; one end of the connecting pin is fixed on the supporting assembly, and the other end of the connecting pin is slidably inserted into the pressure plate, and the quartz group and the electrode sheet are sleeved on the outer peripheral wall of the connecting pin.

[0008] As a preferred solution, the pressure-bearing component further includes an insulating fixing member, and the insulating fixing member is used for the quartz group.

[0009] As a preferred solution, the pressure-bearing component further comprises a protective sleeve, which is sleeved on the outer peripheral wall of the insulating fixing member and is used to protect the quartz group and the electrode sheet.

[0010] As a preferred solution, a coaxial radio frequency connector is provided at one end of the bearing component away from the pressure-bearing component, and the coaxial radio frequency connector is used to connect to an external device to transmit electrical signals.

[0011] As a preferred solution, the pressing block assembly and the bearing assembly are both made of materials with high compressive strength and wear resistance.

[0012] As a preferred solution, the quartz plates are in a geometric shape that fits seamlessly between each other.

[0013] Compared with the prior art, the present application has the following beneficial effects: high stability. Through the sliding connection design of the pressure block assembly and the bearing assembly, the sensor can sensitively respond to external forces in all directions; the pressure-bearing assembly adopts an alternating laminated structure of a quartz group and electrode sheets, which improves the sensitivity and measurement accuracy of the sensor, wherein the quartz group is composed of multiple quartz sheets, so that the mechanical stress is dispersed on multiple quartz sheets, increasing the measurement range and stability of the sensor, and improving the piezoelectric sensor. During the process of being compressed, the mechanical stress will be concentrated on a single quartz block of the piezoelectric sensor, at which time the quartz block is easily damaged, and then the piezoelectric sensor cannot work, and there is a problem of poor stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0015] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0016] Figure 1It is a schematic diagram of the overall structure of a combined quartz plate three-dimensional force piezoelectric sensor in an embodiment of the present application; Figure 2 It is an exploded schematic diagram of a combined quartz plate three-dimensional force piezoelectric sensor in an embodiment of the present application; Figure 3 yes Figure 2 A partial enlarged view of part "A"; Figure 4 It is a schematic diagram of the overall structure of the quartz group in the embodiment of the present application.

[0017] Description of reference numerals: 1. Pressing block assembly; 11. Connecting block; 12. Pressing plate; 13. Connecting pin; 2. Pressing assembly; 21. Quartz group; 22. Electrode sheet; 23. Insulating fixing piece; 24. Protective sleeve; 3. Load-bearing assembly; 31. Coaxial RF connector. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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 creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0021] Embodiment 1: The present application provides a combined quartz plate three-dimensional force piezoelectric sensor, including a pressure block component 1, a pressure-bearing component 2 and a bearing component 3.

[0022] By designing and manufacturing three main parts, namely, the pressing block assembly 1, the pressure bearing assembly 2 and the bearing assembly 3, and combining them in a specific way, a piezoelectric sensor structure capable of measuring three-dimensional force is realized. The pressing block assembly 1 is used to receive external force, the pressure bearing assembly 2 is used to sense force and generate electrical signals, and the bearing assembly 3 provides support and positioning for the entire structure.

[0023] The pressing block assembly 1 is slidably connected to the bearing assembly 3 , and the pressure-bearing assembly 2 is arranged between the pressing block assembly 1 and the bearing assembly 3 .

[0024] By connecting the pressing block assembly 1 and the bearing assembly 3 by means of a sliding connection and placing the pressure-bearing assembly 2 between them, a structure capable of flexibly transmitting force is realized. This design enables the externally applied force to be effectively transmitted to the pressure-bearing assembly 2, while also allowing the pressing block assembly 1 to have a certain degree of freedom of movement on the bearing assembly 3 to adapt to the input of forces in different directions.

[0025] The pressure-bearing component 2 includes a quartz group 21 and an electrode sheet 22, which are stacked in a stack of one layer of quartz group 21 and one layer of electrode sheet 22; wherein the quartz group 21 is composed of a plurality of quartz sheets.

[0026] A composite piezoelectric sensing structure is achieved by forming a quartz group 21 with multiple quartz sheets and alternately stacking them with electrode sheets 22. This stacking design increases the sensing area and sensitivity, allowing the sensor to detect the applied force more accurately. The piezoelectric properties of the quartz sheets are fully utilized, and when pressure is applied, electric charges are generated, and the electrode sheets 22 collect these charges and conduct electrical signals.

[0027] In this embodiment, an efficient three-dimensional force piezoelectric sensor is constructed by combining the pressing block assembly 1, the pressure-bearing assembly 2 and the load-bearing assembly 3. The sliding connection design of the pressing block assembly 1 allows force to be transmitted in multiple directions, thereby enhancing the flexibility and applicability of the sensor. The pressure-bearing assembly 2 adopts an alternating laminated structure of quartz sheets and electrode sheets 22, which not only improves the utilization efficiency of the piezoelectric effect, but also enhances the sensitivity and measurement accuracy of the sensor, so that the mechanical stress is dispersed on multiple quartz sheets, thereby improving the piezoelectric sensor. During the process of being compressed, the mechanical stress will be concentrated on a single quartz block of the piezoelectric sensor. At this time, the quartz block is prone to damage, and the piezoelectric sensor cannot work, and there is a problem of poor stability.

[0028] Embodiment 2: The pressing block assembly 1 includes a connecting block 11, a pressing plate 12 and a connecting pin 13. The pressing plate 12 is connected to one end face of the connecting block 11. One end of the connecting pin 13 is fixed to the supporting assembly 3, and the other end of the connecting pin 13 is slidably penetrated on the pressing plate 12. The quartz group 21 and the electrode sheet 22 are sleeved on the outer peripheral wall of the connecting pin 13.

[0029] The stability and adjustability of the pressing block assembly 1 are achieved by providing a combined structure of the connecting block 11, the pressing plate 12 and the connecting pin 13. The connecting block 11 serves as the main body support, the pressing plate 12 is connected to the connecting block 11 to form a pressure application surface, and the connecting pin 13 provides a sliding guide and fixing function. This design enables the quartz group 21 and the electrode sheet 22 to be accurately positioned and subjected to uniform pressure, and is also convenient for adjustment and maintenance.

[0030] The pressure-bearing component 2 further includes an insulating fixture 23 , which is used for the quartz group 21 .

[0031] By adding the insulating fixture 23, effective fixation and electrical insulation of the quartz group 21 are achieved. The insulating fixture 23 can not only stably support the quartz group 21, but also prevent the quartz group 21 from directly contacting other metal parts, avoiding possible electrical short circuits or interference, thereby ensuring the safety of the device and the accuracy of measurement.

[0032] The pressure-bearing component 2 further includes a protective sleeve 24 , which is sleeved on the outer peripheral wall of the insulating fixing member 23 . The protective sleeve 24 is used to protect the quartz group 21 and the electrode sheet 22 .

[0033] By providing the protective sleeve 24, all-round protection is achieved for the quartz group 21 and the electrode sheet 22. The protective sleeve 24 can effectively prevent the influence of external environmental factors (such as dust, moisture, etc.) on the sensitive elements, and can also reduce the damage to them caused by mechanical shock and vibration, thereby extending the service life of the device and improving the stability of the measurement.

[0034] A coaxial RF connector 31 is provided at one end of the bearing component 3 away from the pressure-bearing component 2 . The coaxial RF connector 31 is used to connect to an external device to transmit electrical signals.

[0035] By arranging the coaxial RF connector 31 on the carrier component 3, efficient connection and signal transmission between the device and the external measuring equipment are achieved. The coaxial RF connector 31 has good electromagnetic shielding performance and signal transmission characteristics, can ensure the integrity and accuracy of the measurement signal, and also facilitates the interface standardization and interchangeability of the device.

[0036] The pressing block assembly 1 and the bearing assembly 3 are both made of materials with high compressive strength and wear resistance.

[0037] The long-term stability and reliability of the device are achieved by selecting materials with high compressive strength and good wear resistance to make the pressing block assembly 1 and the bearing assembly 3. These materials can withstand large pressures without deformation, and have good wear resistance, so they can maintain accuracy during frequent use and adjustment, extending the service life of the device and reducing the frequency of maintenance and replacement.

[0038] The quartz sheets are in a geometric shape that fits seamlessly with each other.

[0039] By designing the quartz plates into a geometric shape that fits seamlessly between each other, efficient assembly and performance optimization of the quartz group 21 are achieved. This design not only improves the overall strength and stability of the quartz group 21, but also reduces the gap between the quartz plates, minimizes measurement errors and signal losses, and improves measurement accuracy and repeatability.

[0040] In this embodiment, by optimizing the structural design of the pressing block assembly 1, the pressure-bearing assembly 2 and the bearing assembly 3, using high-performance materials, and introducing auxiliary components such as the insulating fixing 23 and the protective sleeve 24, a high-precision and high-stability dielectric constant measuring device is realized. The device has the characteristics of compact structure, convenient operation and accurate measurement. The adjustability and stability of the pressing block assembly 1 ensure the uniform application of pressure during the measurement process; the setting of the insulating fixing 23 and the protective sleeve 24 improves the safety and durability of the device; the use of the coaxial RF connector 31 ensures the quality of signal transmission; the application of high-strength wear-resistant materials extends the service life of the device; and the seamless fitting design of the quartz plate further improves the accuracy of the measurement. These designs and optimization measures work together to enable the device to perform long-term stable and high-precision dielectric constant measurements in various complex environments, meeting the strict requirements of modern scientific research and industrial applications.

[0041] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined quartz plate three-dimensional force piezoelectric sensor, characterized in that: include: A pressing block assembly (1), a pressure-bearing assembly (2) and a load-bearing assembly (3); The pressing block assembly (1) is slidably connected to the bearing assembly (3), and the pressure-bearing assembly (2) is arranged between the pressing block assembly (1) and the bearing assembly (3); The pressure-bearing component (2) comprises a quartz group (21) and an electrode sheet (22), wherein the quartz group (21) and the electrode sheet (22) are stacked in a stacked manner of one layer of the quartz group (21) and one layer of the electrode sheet (22); wherein the quartz group (21) is composed of a plurality of quartz sheets.

2. The combined quartz plate three-dimensional force piezoelectric sensor according to claim 1, characterized in that: The pressing block assembly (1) comprises a connecting block (11), a pressing plate (12) and a connecting pin (13); the pressing plate (12) is connected to one end surface of the connecting block (11); One end of the connecting pin (13) is fixed on the bearing assembly (3), and the other end of the connecting pin (13) is slidably inserted into the pressing plate (12). The quartz group (21) and the electrode sheet (22) are sleeved on the outer peripheral wall of the connecting pin (13).

3. The combined quartz plate three-dimensional force piezoelectric sensor according to claim 1, characterized in that: The pressure-bearing component (2) further comprises an insulating fixing member (23), wherein the insulating fixing member (23) is used for the quartz group (21).

4. The combined quartz plate three-dimensional force piezoelectric sensor according to claim 3, characterized in that: The pressure-bearing component (2) further comprises a protective sleeve (24), wherein the protective sleeve (24) is sleeved on the outer peripheral wall of the insulating fixing member (23), and the protective sleeve (24) is used to protect the quartz group (21) and the electrode sheet (22).

5. The combined quartz plate three-dimensional force piezoelectric sensor according to claim 1, characterized in that: A coaxial radio frequency connector (31) is provided at one end of the bearing component (3) away from the pressure-bearing component (2), and the coaxial radio frequency connector (31) is used to connect to an external device to transmit electrical signals.

6. The combined quartz plate three-dimensional force piezoelectric sensor according to claim 1, characterized in that: The pressing block assembly (1) and the bearing assembly (3) are both made of materials with high compressive strength and wear resistance.

7. The combined quartz plate three-dimensional force piezoelectric sensor according to claim 1, characterized in that: The quartz plates are in a geometric shape that fits seamlessly with each other.

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