Dustproof packaging structure of sensor

Abstract

The utility model relates to a dustproof packaging structure of a sensor, which comprises a shell and a cover plate, and an anti-deformation mechanism is arranged in the cover plate. The anti-deformation mechanism comprises a fixing plate, the fixing plate is fixedly installed on the inner bottom wall of the cover plate, a rotating rod is rotatably installed at the center of the top of the fixing plate, a moving block is in threaded connection with the outer surface of the rotating rod, a movable rod is movably installed on the outer surface of the moving block, and a sliding groove is formed in the top of the fixing plate. According to the dustproof packaging structure of the sensor, by arranging the anti-deformation mechanism, the problem that a sealing ring in a dustproof packaging structure of the sensor in the prior art is prone to deformation due to vibration or impact is effectively solved, and the anti-deformation mechanism utilizes a rotating rod and a moving block which are in threaded connection, a sliding plate and a sliding groove which are in sliding connection and a movable rod which is in rotating connection; the sealing ring main body can be effectively fixed and uniformly pressed, and the sealing ring main body is prevented from being deformed when being subjected to extra pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely is a sensor dustproof packaging structure. BACKGROUND

[0002] The differential pressure sensor is a sensor for measuring the small difference between two pressures, and when it works, one end pressure acts on the back cavity of the pressure sensor chip, and the other end pressure acts on the front surface of the pressure sensor chip. The output of the differential pressure sensor is the difference between the two end pressures. The differential pressure sensor has small range and high precision requirement.

[0003] In order to prevent dust or small particle impurities from entering the sensor during use and affecting the accuracy of the sensor, a sealing ring is arranged at the connection of the cover body to enhance the tightness during connection. However, if the sensor is subjected to vibration or impact during operation, the sealing ring may be subjected to additional uneven pressure, causing its shape to change. This deformation may damage the sealing effect of the sealing ring, allowing external contaminants to enter the sensor. Therefore, a sensor dustproof packaging structure is proposed. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a sensor dustproof packaging structure, which has the advantages of good sealing effect, solves the problem that the sealing ring may be subjected to additional uneven pressure during the operation of the sensor, causing its shape to change. This deformation may damage the sealing effect of the sealing ring, allowing external contaminants to enter the sensor.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a sensor dustproof packaging structure, comprising a shell and a cover plate, the inside of the cover plate is provided with an anti-deformation mechanism;

[0006] The anti-deformation mechanism comprises a fixed plate, the inner bottom wall of the cover plate is fixedly provided with a fixed plate, the top center of the fixed plate is rotatably provided with a rotating rod, the outer surface of the rotating rod is threadedly connected with a moving block, the outer surface of the moving block is movably provided with a movable rod, the top of the fixed plate is provided with a sliding groove, the inside of the sliding groove is slidably provided with a sliding plate, and the side of the sliding plate is fixedly provided with a fastening plate.

[0007] Further, the outer surface of the cover plate is provided with a sealing ring main body, and the top of the shell is provided with a sealing groove matched with the sealing ring main body.

[0008] Further, the front, rear, left and right sides of the cover plate are fixedly provided with L plates, and the four L plates are movably provided with mounting rods, and the top of the shell is provided with threaded holes matched with the mounting rods.

[0009] Further, one end of the rotating rod penetrates the top of the cover plate and is fixedly installed with a knob, the number of the movable rods, the sliding grooves, the sliding plates and the fastening plates is four, and the four movable rods are distributed on the outer surface of the moving block at equal distances with the rotating rod as the center.

[0010] Further, each movable rod is rotatably installed between the moving block and the sliding plate.

[0011] Further, the left side of the shell is provided with a pressure interface, the inside of the shell is provided with a sensitive element electrically connected with the pressure interface, and the front side of the shell is provided with a display screen.

[0012] Compared with the prior art, the technical scheme has the following beneficial effects:

[0013] The dustproof packaging structure of the sensor effectively solves the problem that the sealing ring is prone to deformation due to vibration or impact in the dustproof packaging structure of the sensor in the prior art, and the anti-deformation mechanism utilizes the rotating rod and the moving block in threaded connection, the sliding plate and the sliding groove in sliding connection, and the movable rod in rotary connection, so that effective fixation and uniform pressure on the sealing ring body can be realized, deformation of the sealing ring body when subjected to additional pressure is prevented, the sealing effect of the sealing ring body is ensured, external dust or small particle impurities are prevented from entering the inside of the sensor, and the precision and reliability of the sensor are protected. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a three-dimensional structure schematic view of the utility model when the cover plate is opened;

[0016] Figure 3 It is a three-dimensional structure schematic view of the anti-deformation mechanism of the utility model;

[0017] Figure 4 It is a sectional view of the cover plate of the utility model.

[0018] In the drawing: 1, shell; 101, sealing groove; 102, pressure interface; 103, sensitive element; 104, display screen; 2, cover plate; 201, sealing ring body; 3, anti-deformation mechanism; 301, fixed plate; 302, rotating rod; 303, moving block; 304, movable rod; 305, sliding groove; 306, sliding plate; 307, fastening plate. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0020] Please refer to Figures 1-4 The sensor dustproof packaging structure in the embodiment comprises a shell 1 and a cover plate 2, and a deformation prevention mechanism 3 is arranged in the cover plate 2.

[0021] The sensor mainly comprises a pressure interface 102, a sensitive element 103, a display screen 104, a signal processing circuit and the like, and the structures and mounting modes not shown in the figure and not mentioned are all the structures and mounting modes in the prior art. The pressure interface 102 is used for receiving the input of two different pressure sources and is connected to the sensitive element 103 in the sensor through a metal joint. When the two pressure interfaces 102 receive the input of two different pressure sources respectively, the sensitive element 103 will sense the difference between the two pressures. The sensitive element 103 converts the pressure difference into a corresponding electrical signal, such as a change in resistance value, a change in capacitance and the like. The signal processing circuit amplifies, filters and linearizes the electrical signal to obtain more accurate and stable pressure difference readings. Finally, the readings are displayed on the display screen 104 for further processing and analysis.

[0022] The deformation prevention mechanism 3 comprises a fixed plate 301, the fixed plate 301 is fixedly installed on the inner bottom wall of the cover plate 2, a rotating rod 302 is rotatably installed at the top center of the fixed plate 301, a moving block 303 is threadedly connected to the outer surface of the rotating rod 302, a movable rod 304 is movably installed on the outer surface of the moving block 303, a sliding groove 305 is formed in the top of the fixed plate 301, a sliding plate 306 is slidably installed in the sliding groove 305, and a fastening plate 307 is fixedly installed on one side of the sliding plate 306.

[0023] By forming the sealing groove 101 on the shell 1 and arranging the sealing ring main body 201 on the cover plate 2, when the cover plate 2 is installed on the shell 1 to realize the packaging of the sensor, the sealing ring main body 201 is clamped into the sealing groove 101 to realize the sealing connection between the two, and then the four L-plate threaded holes on the cover plate 2 are used to realize the fixation between the two, so that they are stably fixed together.

[0024] In order to prevent the sealing ring body 201 from being deformed by additional pressure, a deformation prevention mechanism 3 is provided, which utilizes the threaded connection between the rotating rod 302 and the moving block 303, the sliding connection between the sliding plate 306 and the sliding groove 305, and the rotatingly installed movable rod 304 between the moving block 303 and the sliding plate 306. When the rotating rod 302 rotates, it can drive the four fastening plates 307 to move towards the sealing ring body 201, and abut against the four sides of the sealing ring body 201, thereby firmly fixing the sealing ring body 201 in the sealing groove 101. This design not only prevents the sealing ring body 201 from being deformed by additional pressure, but also improves the tightness between the sealing ring body 201 and the sealing groove 101, thereby improving the sealing effect.

[0025] In implementation, the following method is used for operation:

[0026] Align the cover plate 2 with the top of the shell 1, ensure that the sealing ring body 201 is aligned with the sealing groove 101 on the shell 1, and gently press the cover plate 2 to make the sealing ring body 201 completely enter the sealing groove 101, thereby achieving a preliminary sealing connection;

[0027] Use the mounting rods on the four L plates to pass through the corresponding hole positions on the cover plate 2, and screw the mounting rods into the threaded holes on the top of the shell 1 until the cover plate 2 is firmly fixed on the shell 1;

[0028] Rotate the knob on the rotating rod 302. Due to the threaded connection between the rotating rod 302 and the moving block 303, the moving block 303 will move along the axial direction of the rotating rod 302. The movement of the moving block 303 will drive the movable rod 304 to rotate, thereby pushing the sliding plate 306 to slide in the sliding groove 305. The sliding of the sliding plate 306 will make the fastening plate 307 move towards the sealing ring body 201 until it abuts against the four sides of the sealing ring body 201, thereby ensuring that the sealing ring body 201 is firmly fixed in the sealing groove 101.

[0029] In summary, the dustproof packaging structure of the sensor effectively solves the problem of deformation of the sealing ring in the dustproof packaging structure of the sensor in the prior art due to vibration or impact by providing the deformation prevention mechanism 3. The deformation prevention mechanism 3 utilizes the threaded connection between the rotating rod 302 and the moving block 303, the sliding connection between the sliding plate 306 and the sliding groove 305, and the rotating connection of the movable rod 304, which can effectively fix and uniformly press the sealing ring body 201, thereby preventing the sealing ring body 201 from being deformed when subjected to additional pressure, ensuring the sealing effect of the sealing ring body 201, preventing external dust or small particle impurities from entering the inside of the sensor, and protecting the precision and reliability of the sensor.

[0030] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0031] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A dustproof packaging structure for a sensor, comprising a housing (1) and a cover plate (2), characterized in that: The cover plate (2) is provided with an anti-deformation mechanism (3); The anti-deformation mechanism (3) includes a fixed plate (301). The fixed plate (301) is fixedly installed on the inner bottom wall of the cover plate (2). A rotating rod (302) is rotatably installed at the top center of the fixed plate (301). A moving block (303) is threadedly connected to the outer surface of the rotating rod (302). A movable rod (304) is movably installed on the outer surface of the moving block (303). A sliding groove (305) is opened on the top of the fixed plate (301). A sliding plate (306) is slidably installed inside the sliding groove (305). A fastening plate (307) is fixedly installed on one side of the sliding plate (306).

2. The sensor dustproof packaging structure according to claim 1, characterized in that: The outer surface of the cover plate (2) is provided with a sealing ring body (201), and the top of the housing (1) is provided with a sealing groove (101) that is compatible with the sealing ring body (201).

3. The sensor dustproof packaging structure according to claim 1, characterized in that: The cover plate (2) is fixedly installed with L plates on the front, back, left and right sides, and each of the four L plates is movably installed with an installation rod. The top of the housing (1) is provided with threaded holes that are compatible with the installation rods on the front, back, left and right sides.

4. The sensor dustproof packaging structure according to claim 1, characterized in that: One end of the rotating rod (302) passes through the top of the cover plate (2) and is fixedly installed with a knob. There are four movable rods (304), slide grooves (305), slide plates (306) and fastening plates (307). The four movable rods (304) are distributed at equal distances around the rotating rod (302) on the outer surface of the moving block (303).

5. The sensor dustproof packaging structure according to claim 1, characterized in that: Each of the aforementioned movable rods (304) is correspondingly rotatably mounted between the movable block (303) and the sliding plate (306).

6. The sensor dustproof packaging structure according to claim 1, characterized in that: A pressure port (102) is provided on the left side of the housing (1), a sensitive element (103) electrically connected to the pressure port (102) is provided inside the housing (1), and a display screen (104) is provided on the front side of the housing (1).

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