Remote water meter module box

Abstract

The remote water meter module box comprises a bottom shell, an outer cover, a wire harness and a circuit board, the bottom shell is connected with the outer cover in a sealed mode, a cavity and a wire inlet hole are formed in the bottom shell, the wire inlet hole is communicated with the cavity, the circuit board is installed in the cavity, the wire harness penetrates through the wire inlet hole to be electrically connected with the circuit board, and the circuit board is electrically connected with the outer cover. The wire harness is connected with the wire inlet hole in a sealed mode, and the cavity is filled with sealant. The cavity is filled with the sealant, so that the sealing reliability of the module box is improved, and the probability of damage and failure of electronic components on the circuit board is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water meters, and in particular relates to a remote water meter module box. Background Art

[0002] With the advancement of technology, wireless remote water meters have been greatly developed, and some disadvantages of wireless remote water meters have emerged. In a humid environment with water, the module box of wireless remote water meters is prone to moisture, which causes damage to the electronic components in the module and makes data transmission impossible. Therefore, the reliability of the module seal of wireless remote water meters has become a common difficulty faced by the water meter industry. Utility Model Content

[0003] The utility model provides a remote water meter module box, which can improve the reliability of the module box seal and reduce the probability of damage and failure of electronic components on the circuit board. The specific technical solution is as follows:

[0004] A remote water meter module box comprises a bottom shell, an outer cover, a wiring harness and a circuit board, wherein the bottom shell is sealed and connected to the outer cover, a chamber and a wire inlet hole are provided on the bottom shell, the wire inlet hole is communicated with the chamber, a circuit board is installed in the chamber, the wiring harness passes through the wire inlet hole and is electrically connected to the circuit board, the wiring harness is sealed and connected to the wire inlet hole, and the chamber is filled with sealant.

[0005] Through the above technical solution, the cavity is filled with sealant to increase the reliability of the sealing of the high module box and reduce the probability of damage and failure of electronic components on the circuit board.

[0006] Preferably, a gap is provided between the circuit board and the side wall of the chamber.

[0007] Through the above technical solution, a certain gap is left between the circuit board and the side wall of the chamber. After glue filling, the glue can wrap the entire circuit board, further improving the reliability of the seal and reducing the probability of failure of components on the circuit board.

[0008] Preferably, a positioning column is provided on the inner wall of the chamber, and a first positioning groove is provided on the circuit board at a position corresponding to the positioning column, and the first positioning groove cooperates with the positioning column.

[0009] Through the above technical solution, the gap between the circuit board and the side wall of the chamber is made more uniform and stable, the glue wraps the circuit board more tightly, and the sealing effect of the circuit board is better.

[0010] Preferably, a bracket is installed in the chamber, a bracket installation groove is opened on the chamber, a protrusion matching the bracket installation groove is provided on the bracket, and a limit rod is provided on the bracket, one end of the limit rod is connected to the bracket, and the other end is in contact with the circuit board.

[0011] Through the above technical solution, a bracket is arranged in the chamber, and the limiting rod on the bracket is used to press the circuit board to prevent the circuit board from floating during the glue filling process.

[0012] Preferably, an O-shaped mounting groove is provided on the top of the bottom shell, the O-shaped mounting groove is arranged around the chamber, and an O-shaped sealing ring is installed on the O-shaped mounting groove.

[0013] Through the above technical solution, an O-ring is installed on the bottom shell, and the outer cover compresses the O-ring for sealing, so that the mechanical seal has good sealing reliability.

[0014] Preferably, the wire inlet hole is provided with an internal thread, the wire harness is sleeved with a clamping nut, the clamping nut is provided with an external thread, the clamping nut is threadedly connected to the wire inlet hole, and a sealing ring is provided between the clamping nut and the wire inlet hole.

[0015] Through the above technical solution, a nut is used to compress the sealing ring for sealing, thereby improving the reliability of sealing at the wire entry hole.

[0016] Preferably, a first countersunk hole is provided on the bottom shell, an insert nut is provided in the first countersunk hole, a second countersunk hole is provided on the outer cover, a bolt is provided in the second countersunk hole, and the bolt passes through the second countersunk hole and the first countersunk hole in sequence to be threadedly connected with the insert nut.

[0017] Through the above technical solution, an insert nut is arranged in the bottom shell, a second countersunk hole is reserved on the upper end surface of the outer cover, and the bottom shell and the outer cover are locked with bolts, thereby further increasing the reliability of the seal.

[0018] Preferably, a second positioning groove is provided on the top of the bottom shell, and a positioning protrusion is provided on the outer cover at a position corresponding to the second positioning groove.

[0019] Through the above technical solution, the positioning protrusion and the positioning groove are positioned through concave-convex cooperation, which is convenient for positioning when the bottom shell and the outer cover are installed, and convenient for the outer cover to be installed on the bottom shell.

[0020] The beneficial effects of the utility model are:

[0021] 1. The circuit board is installed in the cavity of the bottom shell and then filled with sealant to increase the reliability of the high module box sealing.

[0022] 2. Leave a certain gap between the circuit board and the side wall of the chamber. After filling with glue, the glue can wrap the entire circuit board, further improving the reliability of the seal.

[0023] 3. Set up a bracket in the chamber. The limit rod on the bracket is used to press the circuit board to prevent the circuit board from floating during the glue filling process.

[0024] 4. Install the O-ring on the bottom shell, and the outer cover compresses the O-ring for sealing. The mechanical seal has good sealing reliability.

[0025] 5. Use nut to compress the sealing ring for sealing to improve the reliability of sealing at the wire entry hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0027] Figure 1 It is an exploded view of Example 1;

[0028] Figure 2 This is a schematic diagram of the front structure of the bottom shell of Example 1;

[0029] Figure 3 This is a schematic diagram of the back structure of the bottom shell of Example 1;

[0030] Figure 4 This is a schematic diagram of the inner structure of the outer cover of Example 1;

[0031] Figure 5 This is a schematic diagram of the support structure of Example 1;

[0032] Figure 6 This is a schematic diagram of the installation of Example 1;

[0033] 1. bottom shell, 11. chamber, 111. positioning column, 112. bracket mounting groove, 12. wire entry hole, 13. first countersunk hole, 14. O-type mounting groove, 15. O-type sealing ring, 16. positioning groove, 2. outer cover, 21. second countersunk hole, 22. positioning protrusion, 3. wiring harness, 31. clamping nut, 4. circuit board, 5. bracket, 51. bump, 52. limit rod, 6. sealing ring, 7. insert nut, 8. bolt. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] like Figure 1-6 As shown, a remote water meter module box includes a bottom shell 1, an outer cover 2, a wiring harness 3 and a circuit board 4. The bottom shell 1 is provided with a chamber 11 and a wire inlet hole 12, and the wire inlet hole 12 is connected to the chamber 11. The circuit board 4 is installed in the chamber 11. Specifically, a positioning column 111 is provided on the inner wall of the chamber 11, and a first positioning groove is provided on the circuit board 4 at a position corresponding to the positioning column 111. The first positioning groove cooperates with the positioning column 111, so that a certain gap is left between the circuit board 4 and the side wall of the chamber 11.

[0038] The wire harness 3 passes through the wire entry hole 12 and is electrically connected to the circuit board 4, and the wire harness 3 is sealed and connected to the wire entry hole 12. Specifically, the wire entry hole 12 is provided with an internal thread, and a clamping nut 31 is sleeved on the wire harness 3, and an external thread is provided on the clamping nut 31. The clamping nut 31 is threadedly connected to the wire entry hole 12, and a sealing ring 6 is provided between the clamping nut 31 and the wire entry hole 12, and the sealing of the wire entry hole 12 is achieved by the clamping nut 31 clamping the sealing ring 6.

[0039] The bracket 5 is installed in the chamber 11. Specifically, the chamber 11 is provided with a bracket installation groove 112, the bracket 5 is provided with a protrusion 51 matched with the bracket installation groove 112, and the bracket 5 is provided with a limit rod 52, one end of the limit rod 52 is connected to the bracket 5, and the other end is in contact with the circuit board 4. The bracket 5, the protrusion 51 and the limit rod 52 are integrally formed.

[0040] An O-shaped mounting groove 14 is disposed on the top of the bottom shell 1 . The O-shaped mounting groove 14 is disposed around the chamber 11 . An O-shaped sealing ring 15 is installed on the O-shaped mounting groove 14 .

[0041] A second positioning groove 16 is provided on the top of the bottom shell 1, and a positioning protrusion 22 is provided on the outer cover 2 at a position corresponding to the second positioning groove 16. A first countersunk hole 13 is provided on the bottom shell 1, and an insert nut 7 is provided in the first countersunk hole 13. A second countersunk hole 21 is provided on the outer cover 2, and a bolt 8 is provided in the second countersunk hole 21. The bolt 8 passes through the second countersunk hole 21 and the first countersunk hole 13 in sequence and is threadedly connected with the insert nut 7.

[0042] During installation, the wiring harness 3 is passed through the clamping nut 31, the sealing ring 6 and the wire entry hole 12 in sequence to be electrically connected to the circuit board 4. Tighten the clamping nut 31, and the clamping nut 31 presses the sealing ring 6 against the wire entry hole 12 to seal the wire entry hole. Then place the circuit board 4 at the bottom of the chamber 11, and insert the protrusion 51 on the bracket 5 into the bracket installation groove 112, so that the limiting rod 52 on the bracket 5 is aligned with the circuit board 4 to prevent the circuit board 4 from floating during the glue filling process. After completing the above operations, the chamber 11 on the bottom shell 1 is fully filled with glue. After the glue is left to dry, the O-ring 15 is installed in the O-ring installation groove 14 through the corresponding position, and then the positioning protrusion 22 of the outer cover 2 is assembled with the second positioning groove 16 of the bottom shell 1 according to the corresponding position, and then the bolt 8 is passed through the second countersunk hole 21 on the outer cover 2 and threadedly connected with the insert nut 7 embedded in the bottom shell until the lower end surface of the outer cover 2 contacts the upper end surface of the bottom shell 1. During this period, the O-ring 15 is compressed to achieve sealing.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A remote water meter module box, characterized in that: The invention comprises a bottom shell (1), an outer cover (2), a wiring harness (3) and a circuit board (4); the bottom shell (1) is sealedly connected to the outer cover (2); a chamber (11) and a wire entry hole (12) are provided on the bottom shell (1); the wire entry hole (12) is connected to the chamber (11); a circuit board (4) is installed in the chamber (11); the wiring harness (3) passes through the wire entry hole (12) and is electrically connected to the circuit board (4); the wiring harness (3) is sealedly connected to the wire entry hole (12); and the chamber (11) is filled with sealant.

2. According to claim 1, a remote water meter module box is characterized in that: A gap is provided between the circuit board (4) and the side wall of the chamber (11).

3. The remote water meter module box according to claim 1, characterized in that: The inner wall of the chamber (11) is provided with a positioning column (111), and a first positioning groove is provided on the circuit board (4) at a position corresponding to the positioning column (111), and the first positioning groove cooperates with the positioning column (111).

4. The remote water meter module box according to claim 1, characterized in that: A bracket (5) is installed in the chamber (11), a bracket installation groove (112) is provided on the chamber (11), a protrusion (51) matching with the bracket installation groove (112) is provided on the bracket (5), and a limit rod (52) is provided on the bracket (5), one end of the limit rod (52) is connected to the bracket (5), and the other end is in contact with the circuit board (4).

5. The remote water meter module box according to claim 1, characterized in that: The top of the bottom shell (1) is provided with an O-shaped installation groove (14), the O-shaped installation groove (14) is arranged around the chamber (11), and an O-shaped sealing ring (15) is installed on the O-shaped installation groove (14).

6. The remote water meter module box according to claim 1, characterized in that: The wire entry hole (12) is provided with an internal thread, the wire harness (3) is sleeved with a clamping nut (31), the clamping nut (31) is provided with an external thread, the clamping nut (31) is threadedly connected to the wire entry hole (12), and a sealing ring (6) is provided between the clamping nut (31) and the wire entry hole (12).

7. The remote water meter module box according to claim 1, characterized in that: The bottom shell (1) is provided with a first countersunk hole (13), an insert nut (7) is arranged in the first countersunk hole (13), the outer cover (2) is provided with a second countersunk hole (21), a bolt (8) is arranged in the second countersunk hole (21), and the bolt (8) passes through the second countersunk hole (21) and the first countersunk hole (13) in sequence to be threadedly connected with the insert nut (7).

8. The remote water meter module box according to claim 1, characterized in that: The top of the bottom shell (1) is provided with a second positioning groove (16), and the outer cover (2) is provided with a positioning protrusion (22) at a position corresponding to the second positioning groove (16).

Images