A sensor plastic shell with multi-layer sealing structure

Abstract

The application belongs to the technical field of inductors, and specifically discloses an inductor plastic shell with a multilayer sealing structure, which comprises an outer frame, a sealing assembly, a pull hook assembly and a clamping assembly. An inner shell is inserted into the inner part of the outer frame, and an assembly plate is fixed to the upper part of the inner shell. The sealing assembly for closing the gap is arranged between the outer frame and the inner shell. A circular groove is arranged at the center of the bottom of the outer frame. The inductor plastic shell with the multilayer sealing structure inserts the inner shell into the outer frame through the assembly plate in the longitudinal direction by the pull hook assembly. At this time, the four groups of insertion rods are also aligned with the insertion grooves and inserted into the rubber sleeves inside the insertion grooves to be fixed. The silica gel pad on the outer wall of the inner shell also contacts the inner wall of the outer frame. The ring body is clamped to the circular groove by the silica gel ring. The frosted layer on the inner wall of the ring body can clamp and lock the sensor components and also can narrow and shield the gap of the plastic shell to achieve the purpose of dustproof and water resistance, and solves the problem of poor protection effect.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, specifically to a sensor plastic housing with a multi-layer sealing structure. Background Technology

[0002] Sensors are widely used in many fields such as industrial automation, automotive sensing, smart homes, and outdoor monitoring. They are exposed to complex working environments such as humidity, dust, temperature fluctuations, slight vibrations, and acid and alkali corrosion for a long time. The sealing and protection performance of the housing directly determines the operational stability and service life of the internal chip, circuit board, and sensing element.

[0003] Plastic housings have become the mainstream packaging structure for sensors due to their advantages of being lightweight, having good insulation, being inexpensive, and being easy to mold and process. They can effectively support internal sensing components while providing basic dustproof and impact protection, meeting the basic assembly needs of various civilian and industrial scenarios.

[0004] Currently, most existing sensor plastic housings adopt a single-layer sealing structure. The conventional design method is to fasten the upper and lower housings with buckles or bolts, and then seal with a single-layer silicone sealing ring, seal with glue on the housing mating surface, or seal with glue as a whole. Waterproof and dustproof protection is achieved by relying on a single sealing barrier.

[0005] Now, a novel sensor plastic housing with a multi-layer sealing structure is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a sensor plastic housing with a multi-layer sealing structure to solve the problem of poor protection effect mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sensor plastic housing with a multi-layer sealing structure, comprising an outer frame, a sealing component, a hook component, and a snap-fit ​​component. An inner shell is inserted into the inner frame, and an assembly plate is fixed on the top of the inner shell. The sealing component for sealing gaps is disposed between the outer frame and the inner shell. A circular groove is provided at the center of the bottom of the outer frame. The snap-fit ​​component for protecting and fixing the sensor is disposed in the circular groove. The hook component for pulling out the inner shell is disposed on the upper sides of both sides inside the inner shell.

[0008] As a further technical solution of the present invention, the sealing assembly includes slots, and four sets of slots are respectively arranged at the top of the four corners of the outer frame. A groove is provided above the slot. A rubber sleeve is fixed in the inner wall of the slot. A plug rod is movably inserted into the rubber sleeve. An assembly plate is fixed between the tops of the four sets of plug rods. A silicone pad is fixed in the outer wall of the inner shell.

[0009] As a further technical solution of the present invention, the insertion rod is embedded in the slot, and the outer wall of the insertion rod is in contact with the silicone pad.

[0010] As a further technical solution of the present invention, the snap-fit ​​assembly includes a ring body, and a through groove is provided at the center of the ring body. A silicone ring is fixed around the outer wall of the ring body, and a frosted layer is provided around the inner wall of the ring body. A snap-fit ​​block is fixed at the front, back, left, and right sides of the bottom outer end of the ring body, and the ring body is embedded in the circular groove.

[0011] As a further technical solution of the present invention, the four sets of card blocks are snapped and fixed below the outer side of the circular groove, and the outer side of the silicone ring is in contact with the inner wall of the circular groove.

[0012] As a further technical solution of the present invention, the card blocks are all located below the silicone ring.

[0013] As a further technical solution of the present invention, the ring body enters and exits the circular groove vertically.

[0014] As a further technical solution of the present invention, the hook assembly includes a groove, and the grooves are respectively disposed above the two sides inside the inner shell. A bracket is fixed above the inside of the groove, and a rotating block is movably connected between the front and rear of the bracket. The rotating block is provided with a pull groove inside.

[0015] As a further technical solution of the present invention, the rotating block and the support rotate left and right inside.

[0016] As a further technical solution of the present invention, the rotating block can be retracted into the groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the sensor plastic housing with a multi-layer sealing structure not only improves the protective effect of the housing, but also facilitates disassembly and installation;

[0018] (1) By setting the sealing component between the outer frame and the inner shell, setting the snap-fit ​​component in the round groove, and inserting the inner shell through the assembly plate longitudinally into the outer frame through the hook component, the four sets of plug rods are also aligned with the slot and inserted into the rubber sleeve inside the slot for fixation. The silicone pad on the outer wall of the inner shell also contacts the inner wall of the outer frame. The ring is also snapped into the round groove by the silicone ring. The frosted layer on the inner wall of the ring can both snap and lock the sensor component, and can also reduce and block the gap of the plastic shell to achieve the purpose of dustproof and waterproof.

[0019] (2) By setting the hook assembly above the inner shell on both sides, flipping the rotating blocks in the grooves on both sides respectively, so that the rotating blocks are in a horizontal state in the bracket, and then hooking the horizontal rotating blocks on the left and right sides with the thumb and forefinger respectively, the inner shell can be lifted or lowered longitudinally from the inside of the outer frame. After the end, reset the rotating blocks so that the rotating blocks are in a vertical state in the groove, which does not affect the installation of parts inside the inner shell. Attached Figure Description

[0020] Figure 1 This is a frontal cross-sectional view of the present invention.

[0021] Figure 2 This is a front cross-sectional view of the sealing assembly of the present invention;

[0022] Figure 3 This is a front cross-sectional view of the snap-fit ​​assembly of the present invention;

[0023] Figure 4 This is a top cross-sectional view of the snap-fit ​​assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the open front cross-sectional structure of the hook assembly of the present invention;

[0025] Figure 6 This is a schematic diagram of the closed front cross-sectional structure of the hook assembly of the present invention.

[0026] In the diagram: 1. Outer frame; 2. Inner shell; 3. Sealing assembly; 4. Assembly plate; 5. Hook assembly; 6. Circular groove; 7. Snap-fit ​​assembly;

[0027] 301. Silicone pad; 302. Slot; 303. Rubber sleeve; 304. Insert rod; 305. Groove;

[0028] 501, Groove; 502, Bracket; 503, Pulling groove; 504, Swivel block;

[0029] 701, Card block; 702, Silicone ring; 703, Ring body; 704, Frosted layer; 705, Through groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-6An embodiment of the present invention provides a sensor plastic housing with a multi-layer sealing structure, including an outer frame 1, a sealing component 3, a hook component 5, and a snap-fit ​​component 7. An inner shell 2 is inserted into the inner frame 1, and an assembly plate 4 is fixed on the top of the inner shell 2. The sealing component 3 for sealing gaps is disposed between the outer frame 1 and the inner shell 2. A circular groove 6 is provided at the center of the bottom of the outer frame 1. The snap-fit ​​component 7 for protecting and fixing the sensor is disposed in the circular groove 6. The hook component 5 for pulling the inner shell 2 is disposed on the top of both sides inside the inner shell 2.

[0032] The sealing assembly 3 includes slots 302, and four sets of slots 302 are respectively set at the top of the four corners of the outer frame 1. A groove 305 is provided above the slot 302. A rubber sleeve 303 is fixed in the inner wall of the slot 302. A plug rod 304 is movably inserted into the rubber sleeve 303. An assembly plate 4 is fixed between the tops of the four sets of plug rods 304. A silicone pad 301 is fixed in the outer wall of the inner shell 2. The plug rod 304 is embedded in the slot 302, and the outer wall of the plug rod 304 is in contact with the silicone pad 301.

[0033] The snap-fit ​​assembly 7 includes a ring 703, and a through groove 705 is provided at the center of the ring 703. A silicone ring 702 is fixed around the outer wall of the ring 703, and a frosted layer 704 is provided around the inner wall of the ring 703. A snap-fit ​​block 701 is fixed at the front, back, left, and right sides of the bottom of the outer side of the ring 703. The ring 703 is embedded in the circular groove 6. The four sets of snap-fit ​​blocks 701 are snap-fitted and fixed below the outer side of the circular groove 6. The outer side of the silicone ring 702 is in contact with the inner wall of the circular groove 6. The snap-fit ​​blocks 701 are all located below the silicone ring 702. The ring 703 moves vertically into and out of the circular groove 6.

[0034] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the inner shell 2 is inserted longitudinally into the outer frame 1 through the assembly plate 4 via the hook assembly 5. At this time, the four sets of insert rods 304 are also aligned with the slots 302 and inserted into the rubber sleeves 303 inside them for fixation. The silicone pad 301 on the outer wall of the inner shell 2 also contacts the inner wall of the outer frame 1. The ring 703 is also engaged with the circular groove 6 by the silicone ring 702. The frosted layer 704 on the inner wall of the ring 703 engages with the component that locks the sensor.

[0035] The hook assembly 5 includes a groove 501, and the grooves 501 are respectively disposed on the upper sides of the inner shell 2. A bracket 502 is fixed on the upper side of the groove 501, and a rotating block 504 is movably connected between the front and rear sides of the bracket 502. The rotating block 504 is provided with a pull groove 503. The rotating block 504 and the bracket 502 rotate left and right. The rotating block 504 can be retracted into the groove 501.

[0036] Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, the rotating blocks 504 are flipped at the grooves 501 on both sides so that the rotating blocks 504 are in a horizontal state in the bracket 502. Then, by hooking the horizontal rotating blocks 504 on the left and right sides with the thumb and forefinger respectively, the inner shell 2 can be raised or lowered vertically from the inside of the outer frame 1. After the operation is completed, the rotating blocks 504 are reset so that the rotating blocks 504 are in a vertical state in the grooves 501, which does not affect the installation of parts inside the inner shell 2.

[0037] Working principle: When using this invention, firstly, the rotating blocks 504 are flipped at the grooves 501 on both sides, so that the rotating blocks 504 are in a horizontal state in the bracket 502. Then, by hooking the horizontal rotating blocks 504 on the left and right sides with the thumb and forefinger, the inner shell 2 can be raised or lowered vertically from the inside of the outer frame 1. After the operation is completed, the rotating blocks 504 are reset. At this time, the four sets of insert rods 304 under the assembly plate 4 are also aligned with the slots 302 and inserted into the rubber sleeves 303 inside for fixation. The silicone pads 301 on the outer wall of the inner shell 2 also contact the inner wall of the outer frame 1. The ring 703 is also engaged with the circular groove 6 by the silicone ring 702. The frosted layer 704 on the inner wall of the ring 703 can both engage and lock the sensor components and reduce and cover the gaps in the plastic shell.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sensor plastic housing with a multi-layer sealing structure, comprising an outer frame (1), a sealing assembly (3), a hook assembly (5), and a snap-fit ​​assembly (7), characterized in that: An inner shell (2) is inserted into the inner frame (1), and an assembly plate (4) is fixed on the top of the inner shell (2). The sealing assembly (3) for sealing the gap is disposed between the outer frame (1) and the inner shell (2). A circular groove (6) is provided at the center of the bottom of the outer frame (1). The snap-fit ​​assembly (7) for protecting and fixing the sensor is disposed in the circular groove (6). The hook assembly (5) for pulling out the inner shell (2) is disposed above the two sides inside the inner shell (2).

2. The sensor plastic housing with a multi-layer sealing structure according to claim 1, characterized in that: The sealing assembly (3) includes a slot (302), and four sets of slots (302) are respectively located at the top of the four corners of the outer frame (1). A groove (305) is provided above the slot (302). A rubber sleeve (303) is fixed in the inner wall of the slot (302). A plug rod (304) is movably inserted into the rubber sleeve (303). An assembly plate (4) is fixed between the tops of the four sets of plug rods (304). A silicone pad (301) is fixed on the outer wall of the inner shell (2).

3. The sensor plastic housing with a multi-layer sealing structure according to claim 2, characterized in that: The insert (304) is embedded in the slot (302), and the outer wall of the insert (304) is in contact with the silicone pad (301).

4. The sensor plastic housing with a multi-layer sealing structure according to claim 1, characterized in that: The snap-fit ​​assembly (7) includes a ring (703), and a through groove (705) is provided at the center of the ring (703). A silicone ring (702) is fixed around the outer wall of the ring (703), and a frosted layer (704) is provided around the inner wall of the ring (703). A snap-fit ​​block (701) is fixed at the front, back, left and right sides of the bottom of the outer side of the ring (703). The ring (703) is embedded in the circular groove (6).

5. A sensor plastic housing with a multi-layer sealing structure according to claim 4, characterized in that: The four sets of locking blocks (701) are locked and fixed below the outside of the circular groove (6), and the outside of the silicone ring (702) is in contact with the inner wall of the circular groove (6).

6. The sensor plastic housing with a multi-layer sealing structure according to claim 4, characterized in that: The card blocks (701) are all located below the silicone ring (702).

7. A sensor plastic housing with a multi-layer sealing structure according to claim 4, characterized in that: The ring (703) enters and exits the circular groove (6) vertically.

8. The sensor plastic housing with a multi-layer sealing structure according to claim 1, characterized in that: The hook assembly (5) includes a groove (501), and the grooves (501) are respectively located on the upper sides of the inner shell (2). A bracket (502) is fixed on the upper side of the groove (501), and a rotating block (504) is movably connected between the front and rear sides of the bracket (502). A groove (503) is provided inside the rotating block (504).

9. A sensor plastic housing with a multi-layer sealing structure according to claim 8, characterized in that: The rotating block (504) rotates left and right inside the bracket (502).

10. A sensor plastic housing with a multi-layer sealing structure according to claim 8, characterized in that: The rotating block (504) can be retracted into the groove (501).

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