A pressure sensor package structure

Abstract

The utility model relates to pressure sensor technical field, and disclose a kind of pressure sensor packaging structure, including external component, the inner chamber top of external component is equipped with top component, the inner chamber bottom of external component is equipped with buffer component, the inside of external component is equipped with sealing component, by being equipped with external component and top component, it is favorable to same packaging structure can be replaced by different range of sensitive chip or diaphragm, adapt to different pressure range or medium type, and without damaging the overall sealing of packaging, ensure the integrity of packaging structure after sensor replacement;By being equipped with external component and buffer component, it is favorable to the buffer cover and spring made of ACF bionic cartilage supermaterial, can absorb the impact kinetic energy that most packaging structure outside receives, make the impact degree of sensor body reduce, improve the accuracy of sensor measurement data.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor technology, and more specifically to a pressure sensor packaging structure. Background Technology

[0002] Pressure sensors, as key components that sense pressure signals and convert them into electrical signals, are widely used in many fields such as industrial control, automotive electronics, and medical equipment. With the development of technology, the performance requirements for pressure sensors are becoming increasingly stringent, demanding not only high sensitivity and high accuracy but also miniaturization and high reliability. This has driven the continuous development of pressure sensor packaging technology.

[0003] In existing sensors, the sensor directly contacts the interior of the packaging structure during encapsulation. When the packaging shell is subjected to external interference, the stress is directly transmitted to the sensor through the packaging shell, causing deviations in the measurement results. Furthermore, existing packaging structures are mostly made as a single piece, making it impossible to quickly maintain and replace the sensor when it malfunctions or becomes incompatible. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pressure sensor packaging structure to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a pressure sensor packaging structure, including an external component, a top component installed at the top of the inner cavity of the external component, a buffer component provided at the bottom of the inner cavity of the external component, and a sealing component provided inside the external component. The buffer component includes a base, a spring, a buffer platform, a buffer sleeve, and a sensor body. The base is fixedly installed at the bottom of the inner cavity of the first housing and the second housing. The spring is disposed inside the two side bases. The buffer platform is disposed between the two side bases. The buffer sleeve is made of ACF biomimetic cartilage metamaterial. The sensor body is fixedly installed on the top of the buffer platform.

[0006] Preferably, the external component includes a first housing and a second housing, which are symmetrically designed.

[0007] Preferably, the external component includes a connecting lug, a connecting block, and a rotating shaft. The connecting lug is symmetrically arranged on the left side of the first housing, and the connecting block is symmetrically arranged on the left side of the second housing. A rotating shaft is fixedly sleeved on the connecting block. One side of the connecting lug is rotatably sleeved on the upper and lower ends of the rotating shaft. The first housing and the second housing are rotatably sleeved together by the connecting lug, the connecting block, and the rotating shaft.

[0008] Preferably, the external component includes a fixing block and a fixing bolt. The fixing block is symmetrically arranged on the right side of the first housing and the second housing, and the fixing bolt moves through the fixing block on the right side of the first housing and the second housing.

[0009] Preferably, the external component includes a mounting groove, a C-groove, and a retaining ring. The mounting groove is formed at the top of the inner wall of the first housing and the second housing, the C-groove is formed at the bottom of the inner wall of the first housing and the second housing, and the retaining ring is fixedly sleeved on the inner wall of the first housing and the second housing, located between the mounting groove and the C-groove.

[0010] Preferably, the top assembly includes a top cover, which is an integral die-cast structure and is disposed at the top of the inner cavity of the first housing and the second housing.

[0011] Preferably, the top assembly includes an air inlet and a thread. The air inlet is located on the top of the top cover, and the thread is disposed on the surface of the top cover. The top cover is rotated and fitted onto the mounting grooves on the inner walls of the first and second housings via the thread.

[0012] Preferably, the sealing assembly includes a sealing strip and an encapsulating adhesive. The sealing strip is disposed in a C-groove, and the encapsulating adhesive is disposed on the inner wall of the first housing and the second housing, located at the top of the retaining ring.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This invention, by providing external and top components, allows the same packaging structure to adapt to different pressure ranges or media types by replacing sensitive chips or isolation diaphragms with different ranges, without compromising the overall sealing of the packaging and ensuring the integrity of the packaging structure after sensor replacement.

[0015] This invention, by incorporating external and buffer components, utilizes a buffer sleeve and spring made of ACF biomimetic cartilage metamaterial to absorb most of the impact kinetic energy received from the outside of the encapsulation structure, thereby reducing the impact force on the sensor body and improving the accuracy of the sensor's measurement data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the overall structure and some cross-sectional views of the present invention.

[0019] Figure 4 This is a schematic diagram of the top component structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the buffer component structure of this utility model.

[0021] Figure 6 For the present utility model Figure 2 Schematic diagram of structure A in the middle.

[0022] The attached figures are labeled as follows: 1. External component; 101. First housing; 102. Second housing; 103. Connecting lug; 104. Connecting block; 105. Rotating shaft; 106. Fixing block; 107. Fixing bolt; 108. Mounting groove; 109. C-groove; 110. Fixing ring; 2. Top component; 201. Top cover; 202. Air inlet; 203. Thread; 3. Buffer component; 301. Base; 302. Spring; 303. Buffer platform; 304. Buffer sleeve; 305. Sensor body; 4. Sealing component; 401. Sealing strip; 402. Encapsulating adhesive. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The pressure sensor packaging structure involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figure 1-6 This utility model provides a pressure sensor packaging structure, including an external component 1, a top component 2 installed at the top of the inner cavity of the external component 1, a buffer component 3 provided at the bottom of the inner cavity of the external component 1, and a sealing component 4 provided inside the external component 1.

[0025] Reference Figure 1-3 and Figure 6The external component 1 includes a first housing 101, a second housing 102, a connecting lug 103, a connecting block 104, a rotating shaft 105, a fixing block 106, a fixing bolt 107, a mounting groove 108, a C-groove 109, and a fixing ring 110. The first housing 101 and the second housing 102 are symmetrically designed. The connecting lug 103 is symmetrically arranged on the left side of the first housing 101, and the connecting block 104 is symmetrically arranged on the left side of the second housing 102. A rotating shaft 105 is fixedly sleeved on the connecting block 104. One side of the connecting lug 103 is rotatably sleeved on the upper and lower ends of the rotating shaft 105. The first housing 101 and the second housing 102 are rotatably sleeved together by the connecting lug 103, the connecting block 104, and the rotating shaft 105. The fixing block 106... The fixing bolt 107 is located on the right side of the first housing 101 and the second housing 102. It passes through the fixing block 106 on the right side of the first housing 101 and the second housing 102. The mounting groove 108 is opened at the top of the inner wall of the first housing 101 and the second housing 102. The C-shaped groove 109 is opened at the bottom of the inner wall of the first housing 101 and the second housing 102. The fixing ring 110 is fixedly sleeved on the inner wall of the first housing 101 and the second housing 102 and is located between the mounting groove 108 and the C-shaped groove 109. This allows the first housing 101 and the second housing 102 to be rotated open after the fixing bolt 107 is removed from the fixing block 106, which facilitates maintenance of the interior of the external component 1 or replacement of the entire external component 1.

[0026] Reference Figure 1-2 and Figure 4 The top component 2 includes a top cover 201, an air inlet 202, and a thread 203. The top cover 201 is an integral die-cast structure. The top cover 201 is located at the top of the inner cavity of the first housing 101 and the second housing 102. The air inlet 202 is opened on the top of the top cover 201. The thread 203 is provided on the surface of the top cover 201. The top cover 201 is rotated and fitted onto the mounting groove 108 on the inner wall of the first housing 101 and the second housing 102 through the thread 203. This facilitates the removal of the top cover 201 and the thread 203 from the mounting groove 108 by rotating the top component 2, making it easy to replace the buffer component 3 individually.

[0027] Reference Figure 3 and Figure 5The buffer assembly 3 includes a base 301, a spring 302, a buffer platform 303, a buffer sleeve 304, and a sensor body 305. The base 301 is fixedly installed at the bottom of the inner cavity of the first housing 101 and the second housing 102. The spring 302 is disposed inside the bases 301 on both sides. The buffer platform 303 is disposed between the bases 301 on both sides. The buffer sleeve 304 is made of ACF biomimetic cartilage metamaterial, which is characterized by high energy absorption, high durability, high adjustability, high rate sensitivity, and high environmental adaptability. It can provide an effective buffering effect, reduce the interference of external mechanical vibration on the structure, and improve the accuracy of measurement. The sensor body 305 is fixedly installed on the top of the buffer platform 303. When the external component 1 is subjected to external vibration, the spring 302 will deform and provide a certain buffering effect. Under the double buffering of the spring 302 and the buffer sleeve 304, the stability of the sensor body 305 inside the external component 1 is further improved.

[0028] Reference Figure 3 The sealing assembly 4 includes a sealing strip 401 and an encapsulating adhesive 402. The sealing strip 401 is disposed in the C-groove 109, and the encapsulating adhesive 402 is disposed on the inner wall of the first housing 101 and the second housing 102, located at the top of the fixing ring 110. This combination of sealing strip 401 and encapsulating adhesive 402 helps to improve the sealing between the first housing 101 and the second housing 102, thereby ensuring the detection accuracy of the sensor body 305.

[0029] The working principle of this utility model:

[0030] First, spring 302, buffer platform 303, buffer sleeve 304 and sensor body 305 are sequentially placed into base 301 inside first housing 101 or second housing 102. Then, sealing strip 401 is placed into C-groove 109. First housing 101 or second housing 102 is rotated to close. Fixing blocks 106 on both sides are fixedly connected by fixing bolts 107, so that first housing 101 and second housing 102 are pressed together. While first housing 101 and second housing 102 are pressed together, sealing strip 401 is squeezed so that sealing strip 401 can fill the entire C-groove 109, improving the sealing performance of the encapsulation structure.

[0031] Next, the encapsulating adhesive 402 is evenly filled into the inner walls of the first housing 101, the second housing 102 and the top of the fixing ring 110. Then, the top cover 201 is screwed into the mounting groove 108 through the thread 203. During the movement of the bottom of the top cover 201, the filled encapsulating adhesive 402 is squeezed, so that the encapsulating adhesive 402 is completely adhered between the first housing 101, the second housing 102 and the top cover 201, further improving the sealing performance and completing the assembly of the entire encapsulation structure. Gas enters from the air inlet 202 and is detected by the sensor body 305.

[0032] Finally, rotate the top component 2 to disengage the top cover 201 and thread 203 from the mounting slot 108, making it easy to replace the buffer component 3 individually. Alternatively, after removing the fixing bolt 107 from the fixing block 106, the first housing 101 and the second housing 102 can be rotated open to facilitate maintenance of the interior of the external component 1 or replacement of the entire external component 1. After maintenance or replacement, repeat the above steps to complete the assembly.

[0033] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0034] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure sensor encapsulation structure, comprising an external component (1), a top component (2) mounted on the top of the inner cavity of the external component (1), a buffer component (3) disposed at the bottom of the inner cavity of the external component (1), and a sealing component (4) disposed inside the external component (1), characterized in that: The buffer assembly (3) includes a base (301), a spring (302), a buffer platform (303), a buffer sleeve (304), and a sensor body (305). The base (301) is fixedly installed at the bottom of the inner cavity of the first housing (101) and the second housing (102). The spring (302) is disposed inside the two bases (301). The buffer platform (303) is disposed between the two bases (301). The buffer sleeve (304) is made of ACF biomimetic cartilage metamaterial. The sensor body (305) is fixedly installed on the top of the buffer platform (303).

2. The pressure sensor packaging structure according to claim 1, characterized in that: The external component (1) includes a first housing (101) and a second housing (102), wherein the first housing (101) and the second housing (102) are symmetrically designed.

3. The pressure sensor packaging structure according to claim 2, characterized in that: The external component (1) includes a connecting lug (103), a connecting block (104), and a rotating shaft (105). The connecting lug (103) is symmetrically arranged on the left side of the first housing (101), and the connecting block (104) is symmetrically arranged on the left side of the second housing (102). The rotating shaft (105) is fixedly sleeved on the connecting block (104). One side of the connecting lug (103) is rotatably sleeved on the upper and lower ends of the rotating shaft (105). The first housing (101) and the second housing (102) are rotatably sleeved together through the connecting lug (103), the connecting block (104), and the rotating shaft (105).

4. The pressure sensor packaging structure according to claim 2, characterized in that: The external component (1) includes a fixing block (106) and a fixing bolt (107). The fixing block (106) is symmetrically arranged on the right side of the first housing (101) and the second housing (102). The fixing bolt (107) is movably inserted through the fixing block (106) on the right side of the first housing (101) and the second housing (102).

5. The pressure sensor packaging structure according to claim 2, characterized in that: The external component (1) includes a mounting groove (108), a C-groove (109), and a retaining ring (110). The mounting groove (108) is formed on the top of the inner wall of the first housing (101) and the second housing (102). The C-groove (109) is formed on the bottom of the inner wall of the first housing (101) and the second housing (102). The retaining ring (110) is fixedly sleeved on the inner wall of the first housing (101) and the second housing (102) and is located between the mounting groove (108) and the C-groove (109).

6. The pressure sensor packaging structure according to claim 2, characterized in that: The top component (2) includes a top cover (201), which is an integral die-cast structure and is located at the top of the inner cavity of the first housing (101) and the second housing (102).

7. The pressure sensor packaging structure according to claim 6, characterized in that: The top component (2) includes an air inlet (202) and a thread (203). The air inlet (202) is located on the top of the top cover (201). The thread (203) is located on the surface of the top cover (201). The top cover (201) is rotated and fitted onto the mounting groove (108) on the inner wall of the first housing (101) and the second housing (102) via the thread (203).

8. The pressure sensor packaging structure according to claim 5, characterized in that: The sealing assembly (4) includes a sealing strip (401) and an encapsulating adhesive (402). The sealing strip (401) is disposed in a C-groove (109), and the encapsulating adhesive (402) is disposed on the inner walls of the first housing (101) and the second housing (102), located at the top of the retaining ring (110).

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