A vibrating crystal structure, a tuning fork liquid level switch

Abstract

This utility model discloses a vibrating crystal structure and a tuning fork level switch. The vibrating crystal structure includes: a mounting bracket with a slot; a guide bracket positioned on the slot of the mounting bracket, with a storage groove inside the guide bracket; an oscillating crystal module housed in the storage groove; and a clamping screw threaded onto the mounting bracket, with its tail end penetrating the guide bracket and contacting the oscillating crystal module. This utility model offers the following advantages: through the coordinated design of the mounting bracket, guide bracket, and clamping screw, the oscillating crystal module is securely and precisely clamped in a predetermined position, while efficiently transmitting the vibration generated by the piezoelectric ceramic to the tuning fork, avoiding energy loss or unnecessary stray vibration. When the entire vibrating crystal structure is installed into the hollow cavity of the tuning fork body, it only needs to be fixed through two locking holes, greatly simplifying the assembly process and improving production efficiency and maintainability.

Description

Technical Field

[0001] This utility model relates to the field of tuning fork level switch technology, and in particular to a vibrating crystal structure and a tuning fork level switch. Background Technology

[0002] A tuning fork level switch is a type of liquid level control switch. The tuning fork is excited by a crystal to generate vibration. When the tuning fork is submerged in liquid, the vibration frequency changes. This frequency change is detected by electronic circuitry and outputs a switching signal.

[0003] Traditional vibrating crystal structures suffer from problems such as unstable fixation, low vibration energy transmission efficiency, and inconvenient assembly. To address these issues, a vibrating crystal structure and tuning fork level switch were designed. Summary of the Invention

[0004] According to a first aspect of the present invention, a vibrating crystal structure is provided, comprising:

[0005] Mounting bracket, the mounting bracket is provided with slots;

[0006] The guide frame is mounted on the slot of the mounting frame, and the inside of the guide frame has a storage slot;

[0007] An oscillating crystal module is installed inside the storage slot.

[0008] The clamping screw is threaded onto the mounting bracket, and its tail end passes through the guide bracket and contacts the oscillating crystal module.

[0009] Furthermore, mounting brackets have fixing holes on both sides.

[0010] Furthermore, the guide frame is equipped with interfaces on both the left and right sides.

[0011] Furthermore, openings are provided on the front and rear sides of the guide frame.

[0012] Furthermore, the oscillating crystal module includes, from top to bottom, a first insulating ceramic sheet, a first piezoelectric ceramic sheet, a second insulating ceramic sheet, a second piezoelectric ceramic sheet, a third insulating ceramic sheet, and a first metal sheet.

[0013] Furthermore, both the first and second piezoelectric ceramic sheets are multilayer piezoelectric ceramic sheets.

[0014] Furthermore, the oscillating crystal module also includes: a second metal plate, which is disposed on top of the first insulating ceramic plate, and the top of the second metal plate contacts the tail end of the clamping screw.

[0015] According to a second aspect of the present invention, a tuning fork level switch is provided, comprising:

[0016] Tuning fork, with two locking holes at the top;

[0017] The main body of the tuning fork is located on the top of the tuning fork, and a hollow cavity is provided in the main body of the tuning fork;

[0018] The first aspect is a vibrating crystal structure, which is set inside a hollow cavity and connected to a tuning fork through two locking holes.

[0019] A vibrating crystal structure according to an embodiment of the present invention has the following beneficial effects:

[0020] 1. Through the coordinated design of the mounting bracket, guide bracket and clamping screw, the oscillating crystal module is firmly and accurately clamped in the predetermined position, while the vibration generated by the piezoelectric ceramic is efficiently transmitted to the tuning fork, avoiding energy loss or unnecessary stray vibration.

[0021] 2. The oscillating crystal module uses multiple layers of insulating ceramic sheets (first, second, and third insulating ceramic sheets) to wrap the piezoelectric ceramic sheet (first and second piezoelectric ceramic sheets) in the middle, forming an effective insulation barrier to prevent the piezoelectric ceramic from short-circuiting to ground under high voltage drive or in humid environments, thus ensuring the reliability and safety of the device under harsh operating conditions.

[0022] 3. When the entire vibrating crystal structure is installed into the hollow cavity of the tuning fork body, it can be fixed by only two locking holes, which greatly simplifies the final product assembly process and improves production efficiency and maintainability.

[0023] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a vibrating crystal structure according to an embodiment of the present invention. Figure 1 .

[0025] Figure 2 This is a three-dimensional structural diagram of a vibrating crystal structure according to an embodiment of the present invention. Figure 2 .

[0026] Figure 3 This is a schematic diagram of the exploded structure of a vibrating crystal structure according to an embodiment of the present invention.

[0027] Figure 4 This is a cross-sectional schematic diagram of a vibrating crystal structure according to an embodiment of the present invention.

[0028] Figure 5 This is a three-dimensional structural diagram of a tuning fork level switch according to an embodiment of the present invention.

[0029] Figure 6 This is an exploded structural diagram of a tuning fork level switch according to an embodiment of the present invention.

[0030] Figure 7 This is a cross-sectional view of a tuning fork level switch according to an embodiment of the present invention. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0032] First, combine Figures 1-4 This invention describes a vibrating crystal structure according to an embodiment of the present invention, which is used for installation inside a tuning fork level switch and has a wide range of applications.

[0033] like Figures 1-4 As shown, a vibrating crystal structure according to an embodiment of the present invention includes a mounting bracket 100, a guide bracket 200, an oscillating crystal module, and a clamping screw 400.

[0034] Specifically, such as Figures 1-4 As shown, the mounting bracket 100 is provided with a slot 101, which is used for the installation of the guide bracket 200.

[0035] Specifically, such as Figures 1-4 As shown, the guide frame 200 is mounted on the slot 101 of the mounting frame 100, and the inside of the guide frame 200 is provided with a storage slot 201.

[0036] Specifically, such as Figures 1-4 As shown, the oscillating crystal module is disposed within the storage slot 201. The oscillating crystal module comprises, from top to bottom, a first insulating ceramic sheet 301, a first piezoelectric ceramic sheet 302, a second insulating ceramic sheet 303, a second piezoelectric ceramic sheet 304, a third insulating ceramic sheet 305, and a first metal sheet 306. The first insulating ceramic sheet 301, the second insulating ceramic sheet 303, and the third insulating ceramic sheet 305 enclose the first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304, forming effective insulation and preventing short circuits to ground under high voltage or humid environments, thus ensuring the reliability and safety of the device under harsh operating conditions. The first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 are respectively connected to the signal driving circuit and the signal acquisition circuit, serving as the signal transmitter and receiver.

[0037] Furthermore, such as Figures 1-4As shown, the first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 are both multilayer piezoelectric ceramic sheets. Under the same mechanical stress (vibration), the multilayer structure can generate a stronger charge / voltage signal than a single-layer ceramic. The stronger signal is easier to be recognized by the subsequent detection circuit, reducing the risk of being overwhelmed by noise, and has good anti-interference ability, thus improving the reliability and sensitivity of the detection.

[0038] Furthermore, such as Figures 1-4 As shown, the oscillating crystal module also includes: a second metal plate 307, which is disposed on top of the first insulating ceramic plate 301. The top of the second metal plate 307 contacts the tail end of the clamping screw 400, so as to evenly distribute the pressure of the clamping screw 400 and avoid stress concentration that could crush the ceramic plate.

[0039] Specifically, such as Figures 1-4 As shown, the clamping screw 400 is threaded onto the mounting bracket 100. The tail end of the clamping screw 400 passes through the guide bracket 200 and contacts the oscillating crystal module. It is used to clamp the oscillating crystal module when the oscillating crystal structure is installed on the tuning fork level switch to ensure the effectiveness of signal transmission.

[0040] Furthermore, such as Figures 1-4 As shown, the mounting bracket 100 has fixing holes 102 on both sides to facilitate the screws to pass through and install and lock the vibrating crystal structure onto the tuning fork level switch.

[0041] Furthermore, such as Figures 1-4 As shown, the guide frame 200 has interfaces 202 on both the left and right sides to provide guidance for installation, ensure installation accuracy, and improve installation efficiency.

[0042] Furthermore, such as Figures 1-4 As shown, the guide frame 200 has openings on both the front and rear sides to facilitate the lead wires of the first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 to be led out.

[0043] During installation, the guide frame 200 is assembled onto the mounting frame 100 along the openings on both sides. Then, the second metal plate 307, the first insulating ceramic plate 301, the first piezoelectric ceramic plate 302, the second insulating ceramic plate 303, the second piezoelectric ceramic plate 304, the third insulating ceramic plate 305, and the first metal plate 306 are sequentially placed in the storage slot 201 of the guide frame 200 from above. Then, screws are passed through the fixing holes 102 on both sides of the mounting frame 100 and locked onto the locking holes in the tuning fork level switch. Finally, the clamping screws 400 are tightened to complete the locking of the second metal plate 307, the first insulating ceramic plate 301, the first piezoelectric ceramic plate 302, the second insulating ceramic plate 303, the second piezoelectric ceramic plate 304, the third insulating ceramic plate 305, and the first metal plate 306.

[0044] As described above, the vibrating crystal structure according to an embodiment of the present invention has the following beneficial effects:

[0045] 1. Through the coordinated design of the mounting bracket 100, guide bracket 200 and clamping screw 400, the oscillating crystal module is firmly and accurately clamped in the predetermined position, while the vibration generated by the piezoelectric ceramic is efficiently transmitted to the tuning fork, avoiding energy loss or unnecessary stray vibration.

[0046] 2. The oscillating crystal module uses multiple layers of insulating ceramic sheets (first, second, and third insulating ceramic sheets) to wrap the piezoelectric ceramic sheet (first and second piezoelectric ceramic sheets) in the middle, forming an effective insulation barrier to prevent the piezoelectric ceramic from short-circuiting to ground under high voltage drive or in humid environments, thus ensuring the reliability and safety of the device under harsh operating conditions.

[0047] 3. When the entire vibrating crystal structure is installed into the hollow cavity of the tuning fork body, it can be fixed by only two locking holes, which greatly simplifies the final product assembly process and improves production efficiency and maintainability.

[0048] The above combined with the appendix Figures 1-4 A vibrating crystal structure according to an embodiment of the present invention is described. Furthermore, the present invention can also be applied to a tuning fork level switch.

[0049] like Figures 5-7 As shown, according to a second aspect of the present invention, a tuning fork level switch is provided, comprising: a tuning fork 1, a tuning fork body 3, and a vibrating crystal structure 5 as described in the first aspect. The tuning fork 1 has two locking holes 2 at its top; the tuning fork body 3 is located at the top of the tuning fork 1, and a hollow cavity 4 is provided inside the tuning fork body 3; the vibrating crystal structure 5 is disposed within the hollow cavity 4 and connected to the tuning fork 1 through the two locking holes 2. Specifically, locking is achieved by passing screws through the fixing holes 102 on both sides of the mounting bracket of the vibrating crystal structure 5, the screws locking the vibrating crystal structure 5 into the two locking holes 2.

[0050] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A vibrating crystal structure, characterized by, Include: Mounting bracket, wherein the mounting bracket is provided with a slot; A guide frame is provided on the slot of the mounting frame, and the inside of the guide frame is provided with a storage slot; An oscillating crystal module is disposed within the storage slot. A clamping screw is threaded onto the mounting bracket, and the tail end of the clamping screw passes through the guide bracket and contacts the oscillating crystal module.

2. The vibrating crystal structure of claim 1 wherein, The mounting bracket has fixing holes on both sides.

3. The vibrating crystal structure of claim 1 wherein, The guide frame is provided with interfaces on both the left and right sides.

4. The vibrating crystal structure of claim 1 wherein, The guide frame has openings on both the front and rear sides.

5. The vibrational crystal structure as described in claim 1, characterized in that, The oscillating crystal module comprises, from top to bottom, a first insulating ceramic sheet, a first piezoelectric ceramic sheet, a second insulating ceramic sheet, a third insulating ceramic sheet, and a first metal sheet.

6. The vibrating crystal structure of claim 5 wherein, Both the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet are multilayer piezoelectric ceramic sheets.

7. The vibrating crystal structure of claim 5 wherein, The oscillating crystal module further includes a second metal plate disposed on top of the first insulating ceramic plate, the top of the second metal plate being in contact with the tail end of the clamping screw.

8. A tuning fork liquid level switch characterized by, Include: A tuning fork, wherein the top of the tuning fork is provided with two locking holes; A tuning fork body, which is located on the top of the tuning fork, and has a hollow cavity in the tuning fork body; The vibrating crystal structure according to any one of claims 1 to 7, wherein the vibrating crystal structure is disposed in the hollow cavity and is connected to the tuning fork through the two locking holes.

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