Waterproof pressure gauge

Abstract

This utility model discloses a waterproof pressure gauge, aiming to solve the problems of high overall waterproofing difficulty and complex assembly in existing pressure gauges. The key technical points are: it includes: a first housing, comprising a base plate, a first mating frame, and a first insertion cavity; a second housing, comprising a top plate and a second mating frame, the top plate being sealed with a digital display area and a button area; a main board, on which a sensor is mounted; the outer wall of the first mating frame and the inner wall of the second mating frame are interlocked and fixed together, with a first sealing ring surrounding the gap between the interlocking parts; the main board is fixedly engaged within the internal area surrounded by the first mating frame, and a second sealing ring surrounds the gap between the sensor and the first insertion cavity.

Description

Technical Field

[0001] This utility model relates to a pressure gauge, and more specifically, to a waterproof pressure gauge. Background Technology

[0002] Pressure gauges typically consist of a housing, a main board, and a display module. The housing often employs a split assembly structure, with the main board and display module housed inside. Since both the main board and display module are electronic components, specific requirements are placed on the waterproof sealing performance of the housing. Furthermore, the main board needs to achieve electrical connections with external devices such as sensors and power supplies, requiring corresponding mounting holes in the housing. These through-hole structures further increase the complexity of the overall waterproof design. Therefore, it is urgent to improve the waterproof structure of existing pressure gauges or provide new alternative waterproof structures, while also considering reducing manufacturing and assembly complexity to improve production efficiency. Utility Model Content

[0003] This utility model provides a waterproof pressure gauge, which solves the problems of difficulty in waterproofing the entire pressure gauge and complex assembly in the prior art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A waterproof pressure gauge, comprising:

[0006] The first housing includes a base plate, a first docking frame, and a first insertion cavity, wherein the first insertion cavity extends through the first housing.

[0007] The second housing includes a top plate and a second docking frame, wherein a digital display area or a button area is sealed on the top plate;

[0008] The motherboard contains sensors.

[0009] The first docking frame is inserted into the second docking frame, and after insertion, a first sealing ring is provided around the gap between the first docking frame and the second docking frame. A first connector is provided on the first docking frame, and a second connector is provided on the second docking frame. The first connector or the second connector is located below the first sealing ring.

[0010] A slot is provided on the side wall of the first docking frame above the first sealing ring. The motherboard is engaged and fixed in the slot, and the sensor is inserted into the first insertion cavity. A second sealing ring is provided around the gap between the sensor and the first insertion cavity.

[0011] The assembly points on the pressure gauge housing are the main leakage points. In this invention, the most prone to leakage is the assembly point between the first and second mating frames. This invention installs first sealing rings at these assembly points to achieve a sealing and waterproofing effect. Simultaneously, the first and second mating frames are interlocked and fixed, the lamp plate is clamped and fixed between the first mating frame and the top plate, and the main board is interlocked and fixed within the area enclosed by the first mating frame. This eliminates the need for screws to fix the main structure of this invention, making assembly quick and convenient, and improving assembly efficiency.

[0012] Preferably, the motherboard is provided with a plurality of insertion parts for inserting into the card slot, and the inner wall of the first mating frame is also provided with a second limiting part that abuts and limits the bottom surface of the motherboard.

[0013] Preferably, the system also includes a light board electrically connected to the motherboard, on which a digital display module and buttons are provided. The light board is clamped and fixed by the first docking frame and the top plate, such that the digital display module is directly opposite the digital display area and the buttons are directly opposite the button area.

[0014] Preferably, the outer wall of the first docking frame is provided with a plurality of protrusions to form the first connector, and the inner wall of the second docking frame is provided with a plurality of assembly grooves that correspond one-to-one with the first connector to form the second connector.

[0015] Preferably, the second connector passes through the second docking frame, the side of the first connector facing away from the bottom plate is inclined, and the outer wall of the first docking frame is also provided with a first limiting part that abuts and limits the second docking frame.

[0016] Preferably, the base plate is provided with an outwardly extending tap, the first plug cavity passes through the tap, the inner end opening of the first plug cavity is provided with a rubber ring mounting groove, the second sealing ring is located in the rubber ring mounting groove, and the outer side of the rubber ring mounting groove is covered with a buckle plate.

[0017] Preferably, the outer wall of the first docking frame is provided with a first annular groove, and the first sealing ring is fixed in the first annular groove.

[0018] Preferably, the top of the first docking frame is provided with several recessed grooves facing one side of the slot, and the bottom of the grooves is inclined on the inner side.

[0019] Preferably, the first housing is provided with a second insertion cavity, in which a wire plug electrically connected to the motherboard is inserted, and a third sealing ring is provided around the gap between the wire plug and the second insertion cavity.

[0020] Preferably, the motherboard has a male terminal in the middle facing the lamp board, and the lamp board has a female terminal that is sleeved with the male terminal.

[0021] During assembly, both the motherboard and the first mating frame need to passively undergo a certain amount of elastic deformation, allowing the connector to slide into the inner side of the first mating frame until it engages with the slot. At this point, the motherboard and the first mating frame automatically spring back to their original state. To further facilitate smoother deformation, the top of the first mating frame has several recessed grooves facing the slot, with the bottom of each groove having an inward slope. The grooves narrow the gap between the groove and the slot, making this part of the material more prone to deformation. Combined with the guiding effect of the slope, this ensures smoother assembly.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. The present invention installs a first sealing ring, a second sealing ring, and a third sealing ring at the assembly parts of the first docking frame and the second docking frame, the assembly parts of the first plug cavity and the sensor, and the assembly parts of the second plug cavity and the wire plug to achieve the function of sealing and waterproofing.

[0024] 2. The first docking frame and the second docking frame are interlocked and fixed together. The lamp board is clamped and fixed between the first docking frame and the top plate. The main board is interlocked and fixed in the internal area surrounded by the first docking frame. This makes the main structure of this utility model fixed without screws, which has the characteristics of quick and convenient assembly and is conducive to improving assembly efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a partial exploded view of the present invention;

[0027] Figure 3 This is a fully exploded view of the present invention;

[0028] Figure 4 for Figure 1 Sectional view along line AA in the middle;

[0029] Figure 5 for Figure 1 BB-direction sectional view.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Base plate; 11. Tap joint; 20. First mating frame; 21. First connector; 22. First limiting part; 23. First annular groove; 24. Slot; 25. Second limiting part; 26. Groove; 27. Engaging part; 30. First insertion cavity; 31. Rubber ring mounting groove; 32. Buckle plate; 40. Second insertion cavity; 50. Top plate; 51. Light-transmitting structure; 52. Digital display light-transmitting hole; 53. Light-diffusing sheet; 54. Button through hole; 55. 60. Sticker; 61. Second docking frame; 70. Second connector; 71. Sensor; 72. Plug-in part; 73. Pin group; 74. Male terminal; 80. Light board; 81. Digital display module; 82. Button; 83. Female terminal; 91. First sealing ring; 92. Second sealing ring; 93. Third sealing ring; 100. First housing; 200. Second housing; 300. Wire plug; 310. Elastic sheet; 311. Engaging hook. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The present invention will now be described in detail with reference to the accompanying drawings.

[0036] Example 1: See Figure 1 , Figure 2 and Figure 3A waterproof pressure gauge includes: a first housing 100, comprising a base plate 10, a first docking frame 20, a first insertion cavity 30, and a second insertion cavity 40, both of which penetrate the first housing 100; a second housing 200, comprising a top plate 50 and a second docking frame 60, the top plate 50 being sealed with a digital display area and a button area; a main board 70, on which a sensor 71 for detecting water pressure is provided; and a light panel 80, on which a digital display module 81 and / or buttons 82 are provided; wherein the first housing 100 and the second housing 200 are formed by one-time injection molding, and both have a rectangular outline.

[0037] See Figure 4 and Figure 5 The first docking frame 20 is inserted into the second docking frame 60, and after insertion, a first sealing ring 91 is arranged around the gap between the first docking frame 20 and the second docking frame 60. A first connector 21 and a second connector 61 are respectively provided on the first docking frame 20 and the second docking frame 60, with the first connector 21 located below the first sealing ring 91. Specifically, the outer wall of the first docking frame 20 has two left-right mirror-distributed protrusions to form the first connector 21, and the inner wall of the second docking frame 60 has corresponding mounting grooves for the first connector 21 to engage one-to-one to form the second connector 61. The second connector 61 penetrates the second docking frame 60, and the side of the first connector 21 facing away from the bottom plate 10 is inclined. Furthermore, the outer wall of the first docking frame 20 also has a first limiting part 22 that abuts against and limits the second docking frame 60. The outer wall of the first docking frame 20 has a first annular groove 23, and the first sealing ring 91 is fixed within the first annular groove 23. The first housing 100 and the second housing 200 achieve tool-free quick docking using the snap-fit ​​structure of the first docking frame 20 and the second docking frame 60, and also have good waterproof performance. Furthermore, by pressing the first connecting member 21 inside the second connecting member 61, the snap-fit ​​state between the first connecting member 21 and the second connecting member 61 can be released, thereby realizing the separation of the first housing 100 and the second housing 200.

[0038] See Figure 3 and Figure 4The motherboard 70 is snapped into and fixed within the internal area enclosed by the first docking frame 20, allowing the sensor 71 to be inserted into the first insertion cavity 30. A second sealing ring 92 surrounds the gap between the sensor 71 and the first insertion cavity 30. Specifically, each of the four inner walls of the first docking frame 20 has a slot 24. The outer contour of the motherboard 70 is positioned and fitted against the inner wall of the first docking frame 20, and each of the four sides of the motherboard 70 has an insertion part 72 for inserting into the slot 24. The inner wall of the first docking frame 20 also has a second limiting part 25 that abuts against and limits the bottom surface of the motherboard 70. The top of the first docking frame 20 has four recessed grooves 26 facing the slots 24, and the bottom of the grooves 26 is sloped on the inner side. Through the above technical solution, the motherboard 70 can be smoothly snapped into the four slots 24, thereby forming a fixed position. The base plate 10 has an outwardly extending tap 11. Specifically, the tap 11 is embedded in the base plate 10 as an injection-molded insert. A first insertion cavity 30 passes through the tap 11. The inner opening of the first insertion cavity 30 has a rubber ring mounting groove 31. A second sealing ring 92 is located in the rubber ring mounting groove 31, and a buckle plate 32 covers the outside of the rubber ring mounting groove 31. The sensor 71 passes through the buckle plate 32 and the second sealing ring 92 in sequence and extends into the first insertion cavity 30. The buckle plate 32 is used to prevent the second sealing ring 92 from falling out. The buckle plate 32 can be fixed to the inner end of the tap 11 by a snap-fit ​​method similar to that of the first connector 21 and the second connector 61, or it can be assembled and fixed by a screw-on method similar to that of a screw cap. The detection end of the sensor 71 is sealed and connected to the first insertion cavity 30. The first insertion cavity 30 passes through the tap 11, while the tap 11 is actually connected to the part to be inspected, thereby realizing direct communication between the detection end of the sensor 71 and the object to be inspected, and realizing pressure monitoring.

[0039] See Figure 3 and Figure 4 The lamp panel 80 is clamped and fixed by the first docking frame 20 and the top plate 50, so that the digital display module 81 is directly opposite the digital display area and the buttons 82 are directly opposite the button area. Specifically, the inner wall of the top plate 50 has a protruding light-transmitting structure 51 that abuts against the digital display module 81. The light-transmitting structure 51 has digital display light-transmitting holes 52. The outer wall of the top plate 50 has a light-diffusing sheet 53 that completely covers the digital display light-transmitting holes 52. The area where the light-diffusing sheet 53 is located corresponds to the digital display area. The top plate 50 also has three button through holes 54 for accommodating the buttons 82. The area where the button through holes 54 are distributed corresponds to the button area. The outer wall of the top plate 50 is sealed with a sticker 55 that completely covers the button area and the digital display area. The outer contour of the lamp panel 80 is adapted to the inner wall of the second docking frame 60, and the upper and lower sides of the lamp panel 80 are clamped and fixed by the light-transmitting structure 51 and the first docking frame 20, thus being completely fixed. Meanwhile, to prevent leakage from the digital display light-transmitting hole 52 and the button through hole 54, a complete seal is achieved by attaching a sticker 55, which is light-transmitting in the digital display area.

[0040] See Figure 5 A cable plug 300, electrically connected to the motherboard 70, is inserted into the second insertion cavity 40. A third sealing ring 93 surrounds the gap between the cable plug 300 and the second insertion cavity 40. Specifically, the third sealing ring 93 is fixedly installed on the outer wall of the cable plug 300. The cable plug 300 is also provided with an elastic piece 310, and the front end of the elastic piece 310 is provided with a locking hook 311. The first housing 100 is provided with a locking part 27 corresponding to the locking hook 311. The motherboard 70 is provided with a pin assembly 73 that extends into the second insertion cavity 40. When the cable plug 300 is fully inserted into the second insertion cavity 40, the pin assembly 73 is electrically connected to the cable plug 300, and the locking hook 311 engages with the locking part 27. The middle part of the elastic piece 310 is elastically connected to the cable plug 300. By pressing the rear end of the elastic piece 310, the locking hook 311 at the front end can be lifted, thereby releasing the engagement with the locking part 27.

[0041] See Figure 4 and Figure 5 The main board 70 is provided with a male terminal 74 facing the lamp board 80, and the lamp board 80 is provided with a female terminal 83 that is electrically connected to the male terminal 74, thereby realizing the electrical connection between the main board 70 and the lamp board 80.

[0042] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A waterproof pressure gauge, characterized in that, include: The first housing (100) includes a base plate (10), a first docking frame (20), and a first insertion cavity (30), wherein the first insertion cavity (30) is disposed through the first housing (100); The second housing (200) includes a top plate (50) and a second docking frame (60), wherein a digital display area or a button area is sealed on the top plate (50); The motherboard (70) has a sensor (71) mounted on it; The first docking frame (20) is inserted into the second docking frame (60), and after insertion, a first sealing ring (91) is provided around the gap between the first docking frame (20) and the second docking frame (60). A first connector (21) is provided on the first docking frame (20), and a second connector (61) is provided on the second docking frame (60). The first connector (21) or the second connector (61) is located on the lower side of the first sealing ring (91). A slot (24) is provided on the side wall of the first docking frame (20) on the upper side of the first sealing ring (91). The main board (70) is engaged and fixed in the slot (24), and the sensor (71) is inserted into the first insertion cavity (30). A second sealing ring (92) is provided around the gap between the sensor (71) and the first insertion cavity (30).

2. The waterproof pressure gauge according to claim 1, characterized in that: The motherboard (70) is provided with a plurality of insertion parts (72) for inserting into the card slot (24), and the inner wall of the first docking frame (20) is also provided with a second limiting part (25) that abuts against and limits the bottom surface of the motherboard (70).

3. The waterproof pressure gauge according to claim 2, characterized in that: It also includes a lamp board (80) electrically connected to the motherboard (70), on which a digital display module (81) and buttons (82) are provided. The lamp board (80) is clamped and fixed by the first docking frame (20) and the top plate (50), so that the digital display module (81) is directly opposite to the digital display area and the buttons (82) are directly opposite to the button area.

4. The waterproof pressure gauge according to claim 1, characterized in that: The outer wall of the first docking frame (20) is provided with a plurality of protrusions to form the first connector (21), and the inner wall of the second docking frame (60) is provided with a plurality of assembly grooves that correspond one-to-one with the first connector (21) to form the second connector (61).

5. The waterproof pressure gauge according to claim 4, characterized in that: The second connector (61) passes through the second docking frame (60). The side of the first connector (21) facing away from the bottom plate (10) is set with an incline. The outer wall of the first docking frame (20) is also provided with a first limiting part (22) that forms a contact and limiting with the second docking frame (60).

6. The waterproof pressure gauge according to claim 1, characterized in that: The base plate (10) is provided with an outwardly extending tap (11), the first insertion cavity (30) passes through the tap (11), the inner end opening of the first insertion cavity (30) is provided with a rubber ring mounting groove (31), the second sealing ring (92) is located in the rubber ring mounting groove (31), and the outer side of the rubber ring mounting groove (31) is covered with a buckle plate (32).

7. The waterproof pressure gauge according to claim 1, characterized in that: The first docking frame (20) has a first annular groove (23) on its outer wall, and the first sealing ring (91) is fixed in the first annular groove (23).

8. The waterproof pressure gauge according to claim 2, characterized in that: The top of the first docking frame (20) is provided with several recessed grooves (26) facing the side of the slot (24), and the bottom of the grooves (26) is provided with an inward slope.

9. The waterproof pressure gauge according to claim 3, characterized in that: The first housing (100) is provided with a second insertion cavity (40), and a wire plug (300) electrically connected to the motherboard (70) is inserted into the second insertion cavity (40). A third sealing ring (93) is provided around the gap between the wire plug (300) and the second insertion cavity (40).

10. The waterproof pressure gauge according to claim 3, characterized in that: The main board (70) is provided with a male terminal (74) facing the lamp board (80), and the lamp board (80) is provided with a female terminal (83) that is electrically connected to the male terminal (74).

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