Waterproof equipment shell

Abstract

A waterproof equipment shell comprises a bottom shell, an upper cover fixed with the bottom shell, and a PCB arranged in a space defined by the bottom shell and the upper cover. The bottom shell is provided with a bottom wall and annular side walls formed on the two sides and the rear side of the bottom wall. A groove is formed in a position where the annular side wall and the upper cover are mutually fixed; the upper cover is provided with a substrate and a boss arranged on the substrate, a step part is formed between the substrate and the boss, and a glue blocking flange is formed at the bottom of the substrate; a glue applying groove is formed between the side wall and the step part, glue is poured into the glue applying groove, and the glue blocking flange is inserted into the groove. The waterproof equipment shell provided by the utility model has good waterproof performance.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial electrical appliances, and more specifically to a waterproof equipment shell. Background Art

[0002] As is known to all, in industrial electrical equipment, main components such as PCB boards are usually installed in a housing to protect the PCB boards.

[0003] Since the PCB board is a precision electrical component, it has many various electronic and electrical components such as integrated circuits, resistors, capacitors, etc., and they are electrically connected to each other through conductive tracks or conductive wires on the circuit board. Therefore, it is necessary to achieve a sealed and waterproof effect on the entire interior of the shell to prevent external water vapor from entering the shell, causing the PCB board and the electronic devices on it to be in a humid environment for a long time and moldy, which in turn leads to deterioration of electrical performance. Or when a large amount of water vapor enters, it may even cause the electronic components to short-circuit with each other and burn the electrical components, which ultimately leads to failure of the PCB board.

[0004] However, the waterproof performance of the device housing in the prior art is poor; moreover, the sealant easily enters the PCB board from the joints of the housing, thereby causing the PCB board to be partially soaked in glue and causing the entire electrical appliance to fail; in addition, the device housing in the prior art uses a large amount of glue when pouring the sealant, resulting in a waste of glue material, ultimately increasing the production cost of the product.

[0005] Therefore, it is necessary for the industry to provide an improved waterproof device housing to overcome the defects of the prior art. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems and provide a waterproof device housing.

[0007] In order to meet the purpose of the utility model, the utility model adopts the following technical solutions:

[0008] A waterproof device housing comprises a bottom shell, an upper cover fixed to the bottom shell, and a PCB board arranged in a space defined by the bottom shell and the upper cover; the bottom shell has a bottom wall and annular side walls formed on both sides and a rear side of the bottom wall; a groove is provided at a position where the annular side wall and the upper cover are fixed to each other; the upper cover has a base plate and a boss arranged on the base plate, a step portion is formed between the base plate and the boss, and a glue-blocking flange is formed at the bottom of the base plate; a glue-applying groove is formed between the side wall and the step portion, glue is poured into the glue-applying groove, and the glue-blocking flange is inserted into the groove.

[0009] Preferably, the PCB board includes a board body and a terminal block formed at one end of the board body; the bottom shell has a front wall; the bottom surface of the substrate of the upper cover extends downward to form a glue baffle; the terminal block extends from the front wall, and the glue baffle is arranged between the board body and the terminal block; a glue cavity is formed between the glue baffle, the bottom wall and the end of the terminal block, and glue is poured into the glue cavity. Further preferably, a sealing groove is provided on the end of the terminal block, and a sealing ring is arranged in the groove.

[0010] Preferably, a first notch is formed on the upper surface of the boss at a position corresponding to the rubber baffle plate. Correspondingly, a second notch is formed on the lower surface of the bottom shell at a position corresponding to the rubber baffle plate.

[0011] Preferably, a mounting seat is arranged around the bottom wall, a mounting hole is provided in the mounting seat, and a reinforcement ring is provided in the mounting hole.

[0012] Preferably, a window is formed on the boss, and a removable cover is disposed on the window. Further preferably, a step pit is formed on the boss, and the step pit includes a side wall and a bottom plate connected to the side wall; the window is formed on the bottom plate, and the removable cover is disposed inside the side wall and on the bottom plate.

[0013] In addition, preferably, an annular groove is provided at a position of the bottom plate corresponding to the window; a sealing gasket is arranged in the annular groove; a vent hole is provided on the detachable cover plate, and a waterproof breathable film is covered on the vent hole.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0015] In the waterproof device housing provided by the utility model, since the annular side wall and the upper cover are fixed to each other at a position where a groove is provided; correspondingly, a glue-blocking flange is formed at the bottom of the upper cover substrate, and by inserting the glue-blocking flange into the groove, a sealing barrier can be formed at the edge of the connection between the upper cover and the bottom shell, preventing the glue from flowing into the bottom shell 10 along the gap at the connection when the glue is poured at the connection, thereby avoiding the corrosion of the internal PCB board by the glue, and finally achieving waterproof protection of the PCB board. A step portion is formed between the substrate and the boss, and a glue groove is formed between the side wall and the step portion. The glue groove serves as a glue pouring area, and glue is poured therein, so that a sealing effect is formed after the glue solidifies, thereby ensuring the waterproof performance of the internal PCB board.

[0016] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a three-dimensional structural exploded view of a waterproof device housing according to an embodiment of the utility model.

[0019] Figure 2 This is a three-dimensional structural assembly diagram of a waterproof device housing according to an embodiment of the utility model.

[0020] Figure 3 This is a partial exploded view of the three-dimensional structure of a waterproof device housing according to an embodiment of the utility model.

[0021] Figure 4 for Figure 2 A top view of the waterproof device housing is shown.

[0022] Figure 5 for Figure 4 A structural cross-sectional view of the waterproof device housing in the BB direction is shown. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be interpreted as limiting the present invention.

[0024] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0025] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0026] In the utility model, since the annular side wall and the upper cover are fixed to each other at a position where a groove is formed, correspondingly, a glue-blocking flange is formed at the bottom of the upper cover substrate, and by inserting the glue-blocking flange into the groove, a sealing barrier can be formed at the edge of the connection between the upper cover and the bottom shell, preventing the glue from flowing into the bottom shell along the gap at the connection when the glue is poured at the connection, thereby avoiding the corrosion of the internal PCB board by the glue, and finally achieving waterproof protection of the PCB board. In addition, a step portion is formed between the substrate and the boss, and a glue groove is formed between the side wall and the step portion. The glue groove serves as a glue pouring area, and glue is poured into it, so that a sealing effect is formed after the glue solidifies, ensuring the waterproof performance of the internal PCB board.

[0027] In one embodiment of the present invention, reference Figure 1-5 , providing a waterproof device housing 100, the waterproof device housing 100 can be any appropriate type of industrial waterproof device housing, such as a waterproof device housing for tire pressure monitoring in the automotive field, or a waterproof device housing for an industrial flow sensor, etc. The utility model does not specifically limit its scope of application.

[0028] The waterproof device housing 100 includes a bottom shell 10, an upper cover 20 buckled with the bottom shell 10, and a PCB board 30 disposed in a space defined by the bottom shell 10 and the upper cover 20. It should be noted that the PCB board 30 generally refers to a printed circuit board in a general sense, which can realize or have various specific functions. The present utility model does not limit this.

[0029] The bottom shell 10 and the upper cover 20 can be fixed to each other in various ways, such as by clamping, gluing or threading. In one embodiment of the utility model, the two can be connected and fixed by clamping, such as forming a clamp ring on one of them and providing a corresponding clamping tongue on the other. The bottom shell 10 and the upper cover 20 can be fastened to each other quickly and conveniently through the cooperation of the two.

[0030] In one embodiment, the bottom shell 10 has a bottom wall 12 and an annular side wall 14 formed on both sides and a rear side of the bottom wall 12. The annular side wall 14 and the bottom wall 12 together form a receiving space to receive the PCB board 30 therein.

[0031] In particular, if Figure 5 As shown, a groove 142 is provided at the position where the annular side wall 14 and the upper cover 20 are fixed to each other; the upper cover 20 has a base plate 21 and a boss 23 arranged on the base plate 21, a step portion 24 is formed between the base plate 21 and the boss 23, and a glue blocking flange 212 corresponding to the groove 142 is formed at the bottom of the base plate 21. A glue groove 146 is formed between the side wall 14 and the step portion 24, and glue 60 is poured into the glue groove 146, so as to form a sealing effect at the connection between the upper cover 20 and the bottom shell 10, preventing external water vapor from entering the inside of the bottom shell 10 and causing erosion and damage to the PCB board 30 arranged therein. Generally, when the bottom shell 10 and the upper cover 20 are assembled with each other, the glue blocking flange 212 is inserted into the groove 142. Through this plug-in effect, it is actually similar to forming a barrier in the glue groove 146 near the bottom shell 10, which prevents the glue in the glue groove 146 from flowing into the inside of the bottom shell 10.

[0032] In order to further prevent the injected glue from entering the interior of the bottom shell 10 from the front of the bottom shell 10, preferably, in one embodiment, the PCB board 30 includes a board body 32 and a terminal block 34 formed at one end of the board body 32; the bottom shell 10 has a front wall 18; the bottom surface of the substrate 21 of the upper cover 20 extends downward to form a glue baffle 25; the terminal block 34 extends from the front wall 18, and the glue baffle 25 is arranged between the board body 32 and the terminal block 34.

[0033] Here, it should be noted that: a glue cavity 147 is formed between the glue baffle plate 25, the bottom wall 12 and the end of the terminal block 34, and glue 60 is poured into the glue cavity 147. By forming the above-mentioned glue cavity 147 and pouring glue 60 therein, the entire shell can be sealed and waterproofed from the front of the bottom shell 10. The function of the glue baffle plate 25 is to form the glue cavity 147 between the bottom wall 12 and the end of the terminal block 34, and at the same time play a role of blocking glue. It should be noted that: the utility model does not limit the specific type of the injected sealing glue.

[0034] In order to enhance the sealing and waterproof performance of the connection between the terminal block 34 and the plate body 32 (or between the terminal block and the front wall 18 ), a sealing groove 342 may be provided on the end of the terminal block 34 , and a sealing ring 70 is disposed therein.

[0035] In order to reduce the weight of the entire housing 100, a first notch 29 can be provided on the upper surface of the boss 23 at a position corresponding to the rubber baffle 25. The provision of the first notch 29 greatly reduces the material of the upper cover 20 itself, thereby reducing the weight of the entire upper cover 20. In addition, the provision of the first notch 29 can also reduce the amount of glue used during pouring, thereby reducing material costs. Similarly, a second notch 13 is provided on the lower surface of the bottom shell 10 at a position corresponding to the rubber baffle 25. It also has a similar technical effect to the first notch 29, so it will not be described in detail.

[0036] Optionally, in order to enhance the structural strength and ensure that when the bottom shell 10 is fixed to other components as a whole, the mounting parts such as the four corners of the bottom shell 10 will not be broken due to excessive force, a mounting seat 11 can be provided around the bottom wall 12, a mounting hole 112 is provided in the mounting seat 11, and a reinforcement ring 80 is provided in the mounting hole 122. Here, the reinforcement ring 80 can be made of metal material to enhance the strength of the mounting seat 11 and prevent the mounting seat 11 from being cracked when the screws are installed.

[0037] In order to facilitate the replacement or maintenance of the SIM card set on the PCB board, a window 2242 can be opened on the boss 23, and a removable cover 40 is set on the window 2242. In this way, when the SIM card needs to be replaced or maintained, it is only necessary to partially open the removable cover 40, without having to remove the entire upper cover 20 from the bottom shell 10. This disassembly requires the removal of the glue poured between the two, and the glue needs to be poured again after the two are reassembled, so it is time-consuming and labor-intensive. The utility model adopts a removable cover 40, which is very convenient and labor-saving. The removable cover 40 can be fixed on the boss 23 by various means, such as a snap-on method or a screw connection method, and the utility model does not limit this.

[0038] Furthermore, a step pit 22 may be provided on the boss 23, the step pit 22 comprising a side wall 222 and a bottom plate 224 connected to the side wall 222; then the window 2242 is provided on the bottom plate 224, and the removable cover plate 40 is placed inside the side wall 222 and on the bottom plate 224. In this way, the bottom plate 224 can provide support for the entire cover plate 40, and at the same time, the cover plate 40 can cover the window 2242.

[0039] Optionally, in order to enhance the waterproof performance between the cover plate 40 and the bottom plate 224, an annular groove 2244 may be provided at a position of the bottom plate 224 corresponding to the window 2242; and a sealing gasket 50 may be provided in the annular groove 2244. After the cover plate 40 is fixed to the bottom plate 224, the sealing gasket 50 is tightly clamped between the cover plate 40 and the bottom plate 224, thereby forming a sealing effect between the two.

[0040] When the entire housing 100 is operated in a high temperature environment, the high temperature easily causes the air inside the housing to expand due to heat, thereby expanding the upper cover 20 or the bottom housing 10. A vent hole 42 may be provided on the removable cover plate 40, and a waterproof breathable membrane 44 may be covered on the vent hole 42. The expanded gas is discharged to the outside of the housing in one direction through the vent hole 42 and the waterproof breathable membrane 44, thereby preventing the housing from expanding. At the same time, since the waterproof breathable membrane 44 only allows one-way flow, that is, out of the housing, and cannot flow in the opposite direction, rainwater can be prevented from entering the housing.

[0041] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0042] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A waterproof device housing, comprising a bottom shell, an upper cover fixed to the bottom shell, and a PCB board arranged in a space defined by the bottom shell and the upper cover; the bottom shell has a bottom wall and an annular side wall formed on both sides and a rear side of the bottom wall; characterized in that: A groove is provided at the position where the annular side wall and the upper cover are fixed to each other; the upper cover has a base plate and a boss arranged on the base plate, a step portion is formed between the base plate and the boss, and a glue-blocking flange is formed at the bottom of the base plate; a glue-applying groove is formed between the side wall and the step portion, glue is poured into the glue-applying groove, and the glue-blocking flange is inserted into the groove.

2. The waterproof device housing according to claim 1, characterized in that: The PCB board includes a board body and a terminal block formed at one end of the board body; the bottom shell has a front wall; the bottom surface of the substrate of the upper cover extends downward to form a glue baffle; the terminal block extends from the front wall, and the glue baffle is arranged between the board body and the terminal block; a glue cavity is formed between the glue baffle, the bottom wall and the end of the terminal block, and glue is poured into the glue cavity.

3. The waterproof device housing according to claim 2, characterized in that: A sealing groove is provided on the end of the wiring terminal seat, and a sealing ring is arranged inside the sealing groove.

4. The waterproof device housing according to claim 2, characterized in that: The upper surface of the boss is provided with a first notch at a position corresponding to the rubber baffle.

5. The waterproof device housing according to claim 4, characterized in that: The lower surface of the bottom shell is provided with a second notch at a position corresponding to the rubber baffle.

6. The waterproof device housing according to claim 1, characterized in that: A mounting seat is arranged around the bottom wall, a mounting hole is arranged in the mounting seat, and a reinforcement ring is arranged in the mounting hole.

7. The waterproof device housing according to claim 1, characterized in that: A window is formed on the boss, and a detachable cover is arranged on the window.

8. The waterproof device housing according to claim 7, characterized in that: The boss is provided with a step pit, and the step pit includes a side wall and a bottom plate connected to the side wall; the bottom plate is provided with the window, and the detachable cover plate is placed inside the side wall and on the bottom plate.

9. The waterproof device housing according to claim 8, characterized in that: An annular groove is provided at a position of the bottom plate corresponding to the window; a sealing gasket is arranged in the annular groove.

10. The waterproof device housing according to claim 7, characterized in that: The detachable cover plate is provided with ventilation holes, and the ventilation holes are covered with a waterproof and breathable membrane.

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