A water meter control box

Abstract

This utility model provides a water meter control box, belonging to the field of water meter technology. It solves the problem of ensuring the airtightness of the control box's interior. The water meter control box includes a bottom shell and a top cover detachably connected to the bottom shell. The top cover has a snap-fit ​​opening, and a lampshade is provided inside the bottom shell. The open end face of the bottom shell has a snap-fit ​​hole, and the lampshade has a snap-fit ​​post. The snap-fit ​​post engages with the snap-fit ​​hole, positioning the lampshade within the bottom shell, with the top of the lampshade embedded in the snap-fit ​​opening. This water meter control box ensures the airtightness of the control box's interior.

Description

Technical Field

[0001] This utility model belongs to the field of water meter technology and relates to a water meter control box. Background Technology

[0002] As the intelligent control part of a smart water meter, the water meter control box integrates electronic components such as processors, sensors, displays, batteries, and circuit boards, and is fixed to the base meter by screws.

[0003] In existing smart water meters, to help operators know whether the water meter is working properly, a sensor light connected to the circuit board is usually installed. The circuit board controls the sensor light to light up different colors according to the water meter's working status. In addition, in order to ensure the airtightness of the control box, the components are usually sealed with glue after installation. Therefore, the wiring of the sensor light and the circuit board are usually sealed together.

[0004] It is worth mentioning that the water meter control box itself is divided into two parts: the top cover and the bottom shell. When finally assembled, the top cover needs to be fastened and fixed to the bottom shell. In addition, for the sensor light, a special slot is made on the top cover, and a lampshade is fastened and fixed in the slot. When the top cover and the bottom shell are fastened and fixed, the sensor light is placed inside by the lampshade to ensure that the user can judge the working status of the water meter by observing the light of the sensor light.

[0005] However, this assembly method has significant drawbacks. During the glue application process, the position of the sensor lamp may shift, causing a slight misalignment between the lampshade and the sensor lamp, which were originally positioned opposite each other. When the lampshade is fastened together, it exerts a certain lateral pulling force on the sensor lamp, as the lampshade, which is supported by the inner wall of the snap-fit, remains relatively stationary. To avoid obstructing other components inside the bottom shell, the sensor lamp itself needs to be positioned closer to the inner wall of the bottom shell. This inevitably causes the sensor lamp to transmit the lateral pulling force it experiences to the solidified glue, resulting in tearing at the joint between the glue and the inner wall of the bottom shell, thus leading to seal failure. Summary of the Invention

[0006] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a water meter control box. The technical problem to be solved by this utility model is: how to ensure the airtightness of the control box.

[0007] The objective of this utility model can be achieved through the following technical solution: A water meter control box includes a bottom shell and a top cover detachably connected to the bottom shell. The top cover has a snap-fit ​​opening. The bottom shell is characterized in that a lampshade is provided inside the bottom shell, the open end face of the bottom shell has a snap-fit ​​hole, the lampshade has a snap-fit ​​post, the snap-fit ​​post is snapped into the snap-fit ​​hole to position the lampshade inside the bottom shell, and the top of the lampshade is embedded in the snap-fit ​​opening.

[0008] The difference between this application and existing technology lies in the following: A snap-fit ​​hole is formed on the open end face of the base shell, and snap-fit ​​posts are formed on the outer wall of the lampshade. Before the glue injection operation, the signal lampshade installed in the base shell is placed inside the lampshade and snapped in place by the snap-fit ​​posts and snap-fit ​​holes, thus maintaining the lampshade's position on the base shell. Then, glue is injected into the base shell. During this process, due to the snap-fit ​​positioning of the snap-fit ​​posts and snap-fit ​​holes, the lampshade, along with the signal lamp inside, remains positioned throughout the glue injection process, the glue curing process, and after the glue has completely cured, preventing damage caused by thermal expansion and contraction of the glue. Shrinkage, tilting of the bottom shell, and other external factors can cause deviations in the position of the latches on the lampshade and the top cover. When assembling the top cover and the bottom shell, this design effectively avoids lateral pulling force on the lampshade due to positional deviation. This prevents the lampshade from pulling the signal light and causing cracks between the solidified glue and the inner wall of the bottom shell due to the pulling force. Even if there is a positional deviation between the lampshade and the latches, the lateral pulling force generated during installation can be absorbed by the cooperation of the latching posts and the inner wall of the latching holes, and will not be transmitted to the solidified glue, effectively ensuring the sealing of the control box.

[0009] In the aforementioned water meter control box, a connecting post is vertically positioned on one inner wall of the bottom shell. The upper end of the connecting post is flush with the open end face of the bottom shell. The snap-fit ​​hole is located on the upper end face of the connecting post. The outer wall of the lampshade has an outwardly protruding portion, and the snap-fit ​​post is located at the bottom of the protruding portion. By setting the connecting post and opening the snap-fit ​​hole on the upper end face of the connecting post, the snap-fit ​​hole can be opened normally while maintaining the wall thickness of the bottom shell. The presence of the connecting post also improves the structural strength of the side wall of the bottom shell. The connecting post is formed on the lower side of the protruding portion. Due to the presence of the protruding portion, the distance between the snap-fit ​​post and the outer wall of the lampshade can be maximized, avoiding interference that could prevent the snap-fit ​​process from being completed.

[0010] In the aforementioned water meter control box, there are two connecting posts, which are spaced apart along the length of the inner sidewall of the bottom shell. Each connecting post has a snap-fit ​​hole at its top. There are also two protrusions, which are spaced apart circumferentially along the outer sidewall of the lampshade. Each protrusion has a snap-fit ​​post at its bottom. The snap-fit ​​between the two snap-fit ​​posts and the snap-fit ​​holes on the two connecting posts ensures the lampshade is securely installed using a two-point positioning method.

[0011] In the aforementioned water meter control box, each of the protrusions is triangular in shape and arranged horizontally. The snap-fit ​​post is formed on the lower side of each protrusion. When the snap-fit ​​post is engaged with the snap-fit ​​hole, the lower side of the protrusion abuts against the upper end face of the connecting post. The triangular protrusion shape further ensures the stability of its connection to the outer wall of the lampshade, and the contact area is further increased by the abutting between the lower side of the protrusion and the top of the connecting post, thus ensuring the installation stability of the lampshade.

[0012] In the aforementioned water meter control box, the top of the lampshade has a stepped surface, and the stepped surface is arranged circumferentially around the lampshade. When the top of the lampshade is engaged with the latch, the inner wall of the top of the upper cover fits against the stepped surface. This ensures the circumferential and axial positioning stability of the lampshade.

[0013] Compared with existing technologies, this water meter control box has the following advantages: After the lamp cover covers the indicator light in the bottom shell, it is snapped in place by snap-fit ​​posts and snap-fit ​​holes. Then, glue is injected into the bottom shell. Through the snap-fit ​​cooperation of the snap-fit ​​posts and snap-fit ​​holes, it is ensured that the lamp cover and the indicator light covered by the lamp cover always remain in the current position. This ensures that when the top cover is assembled with the bottom shell, the lamp cover can be smoothly snapped into the snap-fit ​​hole. It also avoids the lamp cover pulling laterally on the solidified glue due to positional deviation, prevents cracking at the joint between the glue and the inner wall of the bottom shell, and ensures airtightness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the water meter control box.

[0015] Figure 2 This is a cross-sectional view of the water meter control box.

[0016] Figure 3 This is an exploded view of the water meter control box.

[0017] Figure 4 This is a structural diagram of the lampshade.

[0018] Figure 5 This is a schematic diagram of the bottom shell structure.

[0019] In the diagram, 1 is the bottom shell; 11 is the snap-fit ​​hole; 12 is the connecting post; 2 is the top cover; 21 is the bayonet; 3 is the lampshade; 31 is the snap-fit ​​post; 32 is the protrusion; and 33 is the stepped surface. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1-3 As shown, this water meter control box includes a bottom shell 1 and an upper cover 2 that is snapped onto the bottom shell 1. The top of the upper cover 2 has a latch 21 that penetrates the inner top wall of the upper cover 2. The lower cover contains a lamp cover 3 for housing an indicator light 3. Figure 5 Two connecting pillars 12 are integrally formed vertically on one side inner wall of the bottom shell 1. The upper ends of the two connecting pillars 12 are flush with the open end face of the bottom shell 1. A snap-fit ​​hole 11 is provided on the upper end face of each connecting pillar 12.

[0022] Combination Figure 4 Two triangular plate-shaped protrusions 32 are integrally injection molded on the outer wall of the lampshade 3. Each protrusion 32 is horizontally arranged, and several protrusions 32 are spaced apart along the circumference of the outer wall of the lampshade 3. Each protrusion 32 has a snap-fit ​​post 31 formed on its lower side. The lampshade 3 is snapped into place by the two snap-fit ​​posts 31 corresponding to the two snap-fit ​​holes 11, and the lower side of each protrusion 32 abuts against the upper end face of each connecting post 12, thereby ensuring that the lampshade 3 can be firmly positioned at the opening end of the bottom shell 1. The top of the lampshade 3 has a stepped surface 33, and the stepped surface 33 is arranged along the circumference of the lampshade 3. When the top cover 2 and the bottom shell 1 are assembled, the top of the lampshade 3 is inserted into the snap 21, and can abut against the inner wall of the top cover 2 through the stepped surface 33, thereby further improving the positioning stability of the lampshade 3.

[0023] Assembly principle: After completing all circuit layout work inside the bottom shell 1, the worker places the lamp cover 3 on the signal light and snaps it in place using two snap-fit ​​posts 31 and two snap-fit ​​holes 11, so that the lamp cover 3 and the signal light are positioned in the current position and remain stationary. Then, glue is poured into the bottom shell 1 and, after it solidifies, the circuit board is sealed. At the same time, the solidified glue also wraps the lower end of the lamp cover 3. Then, the top cover 2 is fastened onto the bottom shell 1, so that the top of the lamp cover 3 is snapped into the snap 21. During the entire operation, the position of the lamp cover 3 remains fixed, thus preventing lateral displacement due to positional deviation when the lamp cover 3 is snapped into the snap 21. This prevents the lamp cover 3 and the signal light from pulling on the solidified glue and tearing it against the side wall of the bottom shell 1, effectively ensuring the seal.

[0024] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0025] Although this document frequently uses terms such as bottom shell 1, snap-fit ​​hole 11, connecting post 12, top cover 2, bayonet 21, lampshade 3, snap-fit ​​post 31, protrusion 32, and stepped surface 33, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A water meter control box, comprising a bottom shell (1) and an upper cover (2) detachably connected to the bottom shell (1), wherein the upper cover (2) has a latch (21), characterized in that, The bottom shell (1) is provided with a lampshade (3). The bottom shell (1) has a snap-fit ​​hole (11) on its open end face. The lampshade (3) has a snap-fit ​​post (31). The snap-fit ​​post (31) is snapped into the snap-fit ​​hole (11) so that the lampshade (3) is positioned inside the bottom shell (1), and the top of the lampshade (3) is embedded in the snap-fit ​​slot (21).

2. The water meter control box according to claim 1, characterized in that, The inner wall of one side of the bottom shell (1) has a vertical connecting post (12), the upper end of the connecting post (12) is flush with the opening end face of the bottom shell (1), the snap-fit ​​hole (11) is opened on the upper end face of the connecting post (12), the outer wall of the lampshade (3) has an outward protrusion (32), and the bottom of the protrusion (32) has the snap-fit ​​post (31).

3. The water meter control box according to claim 2, characterized in that, There are two connecting posts (12), and the two connecting posts (12) are arranged at intervals along the length of the inner sidewall of the bottom shell (1). Each connecting post (12) has a snap-fit ​​hole (11) at its top. There are two protrusions (32), and the two protrusions (32) are arranged at intervals along the outer sidewall of the lampshade (3). Each protrusion (32) has a snap-fit ​​post (31) at its bottom.

4. The water meter control box according to claim 2 or 3, characterized in that, Each of the protrusions (32) is triangular in shape and arranged horizontally. The snap-fit ​​post (31) is formed on the lower side of the protrusion (32). When the snap-fit ​​post (31) is inserted into the snap-fit ​​hole (11), the lower side of the protrusion (32) abuts against the upper end face of the connecting post (12).

5. The water meter control box according to claim 1, 2, or 3, characterized in that, The top of the lampshade (3) has a stepped surface (33), and the stepped surface (33) is arranged around the lampshade (3). When the top of the lampshade (3) is inserted into the slot (21), the top inner wall of the upper cover (2) and the stepped surface (33) are in contact.

Images